From c61029c77fb68d7a182c0ae010f0f9dcae4e196c Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Thu, 5 Aug 2010 14:26:24 -0400 Subject: wireless: upcase alpha2 values in queue_regulatory_request This provides a little more flexibility for human users, and it allows us to use isalpha rather than the custom is_alpha_upper. Signed-off-by: John W. Linville --- net/wireless/reg.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/reg.c b/net/wireless/reg.c index f180db0de66c..b0d9a08447c9 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -181,14 +182,6 @@ static bool is_alpha2_set(const char *alpha2) return false; } -static bool is_alpha_upper(char letter) -{ - /* ASCII A - Z */ - if (letter >= 65 && letter <= 90) - return true; - return false; -} - static bool is_unknown_alpha2(const char *alpha2) { if (!alpha2) @@ -220,7 +213,7 @@ static bool is_an_alpha2(const char *alpha2) { if (!alpha2) return false; - if (is_alpha_upper(alpha2[0]) && is_alpha_upper(alpha2[1])) + if (isalpha(alpha2[0]) && isalpha(alpha2[1])) return true; return false; } @@ -1399,6 +1392,11 @@ static DECLARE_WORK(reg_work, reg_todo); static void queue_regulatory_request(struct regulatory_request *request) { + if (isalpha(request->alpha2[0])) + request->alpha2[0] = toupper(request->alpha2[0]); + if (isalpha(request->alpha2[1])) + request->alpha2[1] = toupper(request->alpha2[1]); + spin_lock(®_requests_lock); list_add_tail(&request->list, ®_requests_list); spin_unlock(®_requests_lock); -- cgit v1.2.3 From 3f3b6a8d90b6e762e2bb83e6a9e86d9534b56cdc Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 5 Aug 2010 10:20:27 +0200 Subject: cfg80211: deauth doesn't always imply disconnect When an AP sends a deauth frame, or we send one to an AP, that only means we lost our connection if we were actually connected to that AP. Check this to avoid sending spurious "disconnected" events and breaking "iw ... link" reporting. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/mlme.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index d1a3fb99fdf2..ee0af32ed59e 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -149,7 +149,7 @@ void __cfg80211_send_deauth(struct net_device *dev, struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; int i; - bool found = false; + bool found = false, was_current = false; ASSERT_WDEV_LOCK(wdev); @@ -159,6 +159,7 @@ void __cfg80211_send_deauth(struct net_device *dev, cfg80211_put_bss(&wdev->current_bss->pub); wdev->current_bss = NULL; found = true; + was_current = true; } else for (i = 0; i < MAX_AUTH_BSSES; i++) { if (wdev->auth_bsses[i] && memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) { @@ -183,7 +184,7 @@ void __cfg80211_send_deauth(struct net_device *dev, nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL); - if (wdev->sme_state == CFG80211_SME_CONNECTED) { + if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) { u16 reason_code; bool from_ap; -- cgit v1.2.3 From 04600794958f1833f5571c6cde40f260ab557f55 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 5 Aug 2010 17:45:15 +0200 Subject: cfg80211: support sysfs namespaces Enable using network namespaces with wireless devices even when sysfs is enabled using the same infrastructure that was built for netdevs. Signed-off-by: Johannes Berg Acked-by: "Eric W. Biederman" Signed-off-by: John W. Linville --- include/linux/netdevice.h | 2 ++ net/core/net-sysfs.c | 3 ++- net/wireless/core.c | 7 ++++++- net/wireless/sysfs.c | 9 +++++++++ 4 files changed, 19 insertions(+), 2 deletions(-) (limited to 'net/wireless') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 46c36ffe20ee..a4b14fd81c6a 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2171,6 +2171,8 @@ extern void dev_seq_stop(struct seq_file *seq, void *v); extern int netdev_class_create_file(struct class_attribute *class_attr); extern void netdev_class_remove_file(struct class_attribute *class_attr); +extern struct kobj_ns_type_operations net_ns_type_operations; + extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); extern void linkwatch_run_queue(void); diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index af4dfbadf2a0..7d748542d97e 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -789,12 +789,13 @@ static const void *net_netlink_ns(struct sock *sk) return sock_net(sk); } -static struct kobj_ns_type_operations net_ns_type_operations = { +struct kobj_ns_type_operations net_ns_type_operations = { .type = KOBJ_NS_TYPE_NET, .current_ns = net_current_ns, .netlink_ns = net_netlink_ns, .initial_ns = net_initial_ns, }; +EXPORT_SYMBOL_GPL(net_ns_type_operations); static void net_kobj_ns_exit(struct net *net) { diff --git a/net/wireless/core.c b/net/wireless/core.c index 541e2fff5e9c..c70909c3eae4 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -253,11 +253,16 @@ int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, WARN_ON(err); wdev->netdev->features |= NETIF_F_NETNS_LOCAL; } + + return err; } wiphy_net_set(&rdev->wiphy, net); - return err; + err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); + WARN_ON(err); + + return 0; } static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c index 9f2cef3e0ca0..74a9e3cce452 100644 --- a/net/wireless/sysfs.c +++ b/net/wireless/sysfs.c @@ -110,6 +110,13 @@ static int wiphy_resume(struct device *dev) return ret; } +static const void *wiphy_namespace(struct device *d) +{ + struct wiphy *wiphy = container_of(d, struct wiphy, dev); + + return wiphy_net(wiphy); +} + struct class ieee80211_class = { .name = "ieee80211", .owner = THIS_MODULE, @@ -120,6 +127,8 @@ struct class ieee80211_class = { #endif .suspend = wiphy_suspend, .resume = wiphy_resume, + .ns_type = &net_ns_type_operations, + .namespace = wiphy_namespace, }; int wiphy_sysfs_init(void) -- cgit v1.2.3 From afea0b7af7a0c070da8b2029d721abc930e5f96f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Aug 2010 09:46:42 +0200 Subject: cfg80211: check if WEP is available for shared key auth When shared key auth is requested, cfg80211 should verify that the device is capable of WEP crypto which is required. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 37902a54e9c1..bb5b78eebeb2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3572,6 +3572,21 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) if (err) goto unlock_rtnl; + if (key.idx >= 0) { + int i; + bool ok = false; + for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { + if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { + ok = true; + break; + } + } + if (!ok) { + err = -EINVAL; + goto out; + } + } + if (!rdev->ops->auth) { err = -EOPNOTSUPP; goto out; -- cgit v1.2.3 From 633adf1ad1c92c02bd3f10bbd73737a969179378 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 12 Aug 2010 14:49:58 +0200 Subject: cfg80211: mark ieee80211_hdrlen const This function analyses only its single, value-passed argument, and has no side effects. Thus it can be const, which makes mac80211 smaller, for example: text data bss dec hex filename 362518 16720 884 380122 5ccda mac80211.ko (before) 362358 16720 884 379962 5cc3a mac80211.ko (after) a 160 byte saving in text size, and an optimisation because the function won't be called as often. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 2 +- net/wireless/util.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 2fd06c60ffbb..2b403c7ee32e 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1715,7 +1715,7 @@ unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); * ieee80211_hdrlen - get header length in bytes from frame control * @fc: frame control field in little-endian format */ -unsigned int ieee80211_hdrlen(__le16 fc); +unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); /** * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 diff --git a/net/wireless/util.c b/net/wireless/util.c index 0c8a1e8b7690..1eb24162be61 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -221,7 +221,7 @@ const unsigned char bridge_tunnel_header[] __aligned(2) = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; EXPORT_SYMBOL(bridge_tunnel_header); -unsigned int ieee80211_hdrlen(__le16 fc) +unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc) { unsigned int hdrlen = 24; -- cgit v1.2.3 From 2e161f78e5f63a7f9fd25a766bb7f816a01eb14a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 12 Aug 2010 15:38:38 +0200 Subject: cfg80211/mac80211: extensible frame processing Allow userspace to register for more than just action frames by giving the frame subtype, and make it possible to use this in various modes as well. With some tweaks and some added functionality this will, in the future, also be usable in AP mode and be able to replace the cooked monitor interface currently used in that case. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 93 +++++++++++++++++++++++------ include/net/cfg80211.h | 56 +++++++++++------- net/mac80211/cfg.c | 12 ++-- net/mac80211/ieee80211_i.h | 1 + net/mac80211/iface.c | 6 +- net/mac80211/main.c | 37 ++++++++++++ net/mac80211/rx.c | 137 +++++++++++++++++++++++++++++------------- net/mac80211/status.c | 2 +- net/mac80211/util.c | 6 +- net/wireless/core.c | 8 +-- net/wireless/core.h | 21 +++---- net/wireless/mlme.c | 144 +++++++++++++++++++++++++++++---------------- net/wireless/nl80211.c | 108 +++++++++++++++++++++++++--------- net/wireless/nl80211.h | 14 ++--- net/wireless/util.c | 2 +- 15 files changed, 452 insertions(+), 195 deletions(-) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 2c8701687336..8af1e66c3cf9 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -39,6 +39,43 @@ * TODO: need more info? */ +/** + * DOC: Frame transmission/registration support + * + * Frame transmission and registration support exists to allow userspace + * management entities such as wpa_supplicant react to management frames + * that are not being handled by the kernel. This includes, for example, + * certain classes of action frames that cannot be handled in the kernel + * for various reasons. + * + * Frame registration is done on a per-interface basis and registrations + * cannot be removed other than by closing the socket. It is possible to + * specify a registration filter to register, for example, only for a + * certain type of action frame. In particular with action frames, those + * that userspace registers for will not be returned as unhandled by the + * driver, so that the registered application has to take responsibility + * for doing that. + * + * The type of frame that can be registered for is also dependent on the + * driver and interface type. The frame types are advertised in wiphy + * attributes so applications know what to expect. + * + * NOTE: When an interface changes type while registrations are active, + * these registrations are ignored until the interface type is + * changed again. This means that changing the interface type can + * lead to a situation that couldn't otherwise be produced, but + * any such registrations will be dormant in the sense that they + * will not be serviced, i.e. they will not receive any frames. + * + * Frame transmission allows userspace to send for example the required + * responses to action frames. It is subject to some sanity checking, + * but many frames can be transmitted. When a frame was transmitted, its + * status is indicated to the sending socket. + * + * For more technical details, see the corresponding command descriptions + * below. + */ + /** * enum nl80211_commands - supported nl80211 commands * @@ -301,16 +338,18 @@ * rate selection. %NL80211_ATTR_IFINDEX is used to specify the interface * and @NL80211_ATTR_TX_RATES the set of allowed rates. * - * @NL80211_CMD_REGISTER_ACTION: Register for receiving certain action frames - * (via @NL80211_CMD_ACTION) for processing in userspace. This command - * requires an interface index and a match attribute containing the first - * few bytes of the frame that should match, e.g. a single byte for only - * a category match or four bytes for vendor frames including the OUI. - * The registration cannot be dropped, but is removed automatically - * when the netlink socket is closed. Multiple registrations can be made. - * @NL80211_CMD_ACTION: Action frame TX request and RX notification. This - * command is used both as a request to transmit an Action frame and as an - * event indicating reception of an Action frame that was not processed in + * @NL80211_CMD_REGISTER_FRAME: Register for receiving certain mgmt frames + * (via @NL80211_CMD_FRAME) for processing in userspace. This command + * requires an interface index, a frame type attribute (optional for + * backward compatibility reasons, if not given assumes action frames) + * and a match attribute containing the first few bytes of the frame + * that should match, e.g. a single byte for only a category match or + * four bytes for vendor frames including the OUI. The registration + * cannot be dropped, but is removed automatically when the netlink + * socket is closed. Multiple registrations can be made. + * @NL80211_CMD_FRAME: Management frame TX request and RX notification. This + * command is used both as a request to transmit a management frame and + * as an event indicating reception of a frame that was not processed in * kernel code, but is for us (i.e., which may need to be processed in a * user space application). %NL80211_ATTR_FRAME is used to specify the * frame contents (including header). %NL80211_ATTR_WIPHY_FREQ (and @@ -320,8 +359,8 @@ * operational channel). When called, this operation returns a cookie * (%NL80211_ATTR_COOKIE) that will be included with the TX status event * pertaining to the TX request. - * @NL80211_CMD_ACTION_TX_STATUS: Report TX status of an Action frame - * transmitted with %NL80211_CMD_ACTION. %NL80211_ATTR_COOKIE identifies + * @NL80211_CMD_FRAME_TX_STATUS: Report TX status of a management frame + * transmitted with %NL80211_CMD_FRAME. %NL80211_ATTR_COOKIE identifies * the TX command and %NL80211_ATTR_FRAME includes the contents of the * frame. %NL80211_ATTR_ACK flag is included if the recipient acknowledged * the frame. @@ -429,9 +468,12 @@ enum nl80211_commands { NL80211_CMD_SET_TX_BITRATE_MASK, - NL80211_CMD_REGISTER_ACTION, - NL80211_CMD_ACTION, - NL80211_CMD_ACTION_TX_STATUS, + NL80211_CMD_REGISTER_FRAME, + NL80211_CMD_REGISTER_ACTION = NL80211_CMD_REGISTER_FRAME, + NL80211_CMD_FRAME, + NL80211_CMD_ACTION = NL80211_CMD_FRAME, + NL80211_CMD_FRAME_TX_STATUS, + NL80211_CMD_ACTION_TX_STATUS = NL80211_CMD_FRAME_TX_STATUS, NL80211_CMD_SET_POWER_SAVE, NL80211_CMD_GET_POWER_SAVE, @@ -708,7 +750,16 @@ enum nl80211_commands { * is used with %NL80211_CMD_SET_TX_BITRATE_MASK. * * @NL80211_ATTR_FRAME_MATCH: A binary attribute which typically must contain - * at least one byte, currently used with @NL80211_CMD_REGISTER_ACTION. + * at least one byte, currently used with @NL80211_CMD_REGISTER_FRAME. + * @NL80211_ATTR_FRAME_TYPE: A u16 indicating the frame type/subtype for the + * @NL80211_CMD_REGISTER_FRAME command. + * @NL80211_ATTR_TX_FRAME_TYPES: wiphy capability attribute, which is a + * nested attribute of %NL80211_ATTR_FRAME_TYPE attributes, containing + * information about which frame types can be transmitted with + * %NL80211_CMD_FRAME. + * @NL80211_ATTR_RX_FRAME_TYPES: wiphy capability attribute, which is a + * nested attribute of %NL80211_ATTR_FRAME_TYPE attributes, containing + * information about which frame types can be registered for RX. * * @NL80211_ATTR_ACK: Flag attribute indicating that the frame was * acknowledged by the recipient. @@ -891,6 +942,10 @@ enum nl80211_attrs { NL80211_ATTR_WIPHY_TX_POWER_SETTING, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, + NL80211_ATTR_TX_FRAME_TYPES, + NL80211_ATTR_RX_FRAME_TYPES, + NL80211_ATTR_FRAME_TYPE, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -947,7 +1002,7 @@ enum nl80211_attrs { * @NL80211_IFTYPE_MONITOR: monitor interface receiving all frames * @NL80211_IFTYPE_MESH_POINT: mesh point * @NL80211_IFTYPE_MAX: highest interface type number currently defined - * @__NL80211_IFTYPE_AFTER_LAST: internal use + * @NUM_NL80211_IFTYPES: number of defined interface types * * These values are used with the %NL80211_ATTR_IFTYPE * to set the type of an interface. @@ -964,8 +1019,8 @@ enum nl80211_iftype { NL80211_IFTYPE_MESH_POINT, /* keep last */ - __NL80211_IFTYPE_AFTER_LAST, - NL80211_IFTYPE_MAX = __NL80211_IFTYPE_AFTER_LAST - 1 + NUM_NL80211_IFTYPES, + NL80211_IFTYPE_MAX = NUM_NL80211_IFTYPES - 1 }; /** diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 2b403c7ee32e..6a98b1b3bfde 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1020,7 +1020,7 @@ struct cfg80211_pmksa { * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. * This allows the operation to be terminated prior to timeout based on * the duration value. - * @action: Transmit an action frame + * @mgmt_tx: Transmit a management frame * * @testmode_cmd: run a test mode command * @@ -1172,7 +1172,7 @@ struct cfg80211_ops { struct net_device *dev, u64 cookie); - int (*action)(struct wiphy *wiphy, struct net_device *dev, + int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, bool channel_type_valid, @@ -1236,6 +1236,10 @@ struct mac_address { u8 addr[ETH_ALEN]; }; +struct ieee80211_txrx_stypes { + u16 tx, rx; +}; + /** * struct wiphy - wireless hardware description * @reg_notifier: the driver's regulatory notification callback @@ -1286,6 +1290,10 @@ struct mac_address { * @privid: a pointer that drivers can use to identify if an arbitrary * wiphy is theirs, e.g. in global notifiers * @bands: information about bands/channels supported by this device + * + * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or + * transmitted through nl80211, points to an array indexed by interface + * type */ struct wiphy { /* assign these fields before you register the wiphy */ @@ -1294,9 +1302,12 @@ struct wiphy { u8 perm_addr[ETH_ALEN]; u8 addr_mask[ETH_ALEN]; - u16 n_addresses; struct mac_address *addresses; + const struct ieee80211_txrx_stypes *mgmt_stypes; + + u16 n_addresses; + /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ u16 interface_modes; @@ -1492,8 +1503,8 @@ struct cfg80211_cached_keys; * set by driver (if supported) on add_interface BEFORE registering the * netdev and may otherwise be used by driver read-only, will be update * by cfg80211 on change_interface - * @action_registrations: list of registrations for action frames - * @action_registrations_lock: lock for the list + * @mgmt_registrations: list of registrations for management frames + * @mgmt_registrations_lock: lock for the list * @mtx: mutex used to lock data in this struct * @cleanup_work: work struct used for cleanup that can't be done directly */ @@ -1505,8 +1516,8 @@ struct wireless_dev { struct list_head list; struct net_device *netdev; - struct list_head action_registrations; - spinlock_t action_registrations_lock; + struct list_head mgmt_registrations; + spinlock_t mgmt_registrations_lock; struct mutex mtx; @@ -2373,38 +2384,39 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, struct station_info *sinfo, gfp_t gfp); /** - * cfg80211_rx_action - notification of received, unprocessed Action frame + * cfg80211_rx_mgmt - notification of received, unprocessed management frame * @dev: network device * @freq: Frequency on which the frame was received in MHz - * @buf: Action frame (header + body) + * @buf: Management frame (header + body) * @len: length of the frame data * @gfp: context flags - * Returns %true if a user space application is responsible for rejecting the - * unrecognized Action frame; %false if no such application is registered - * (i.e., the driver is responsible for rejecting the unrecognized Action - * frame) + * + * Returns %true if a user space application has registered for this frame. + * For action frames, that makes it responsible for rejecting unrecognized + * action frames; %false otherwise, in which case for action frames the + * driver is responsible for rejecting the frame. * * This function is called whenever an Action frame is received for a station * mode interface, but is not processed in kernel. */ -bool cfg80211_rx_action(struct net_device *dev, int freq, const u8 *buf, - size_t len, gfp_t gfp); +bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, + size_t len, gfp_t gfp); /** - * cfg80211_action_tx_status - notification of TX status for Action frame + * cfg80211_mgmt_tx_status - notification of TX status for management frame * @dev: network device - * @cookie: Cookie returned by cfg80211_ops::action() - * @buf: Action frame (header + body) + * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() + * @buf: Management frame (header + body) * @len: length of the frame data * @ack: Whether frame was acknowledged * @gfp: context flags * - * This function is called whenever an Action frame was requested to be - * transmitted with cfg80211_ops::action() to report the TX status of the + * This function is called whenever a management frame was requested to be + * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the * transmission attempt. */ -void cfg80211_action_tx_status(struct net_device *dev, u64 cookie, - const u8 *buf, size_t len, bool ack, gfp_t gfp); +void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, + const u8 *buf, size_t len, bool ack, gfp_t gfp); /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index f9a317766136..94787d21282c 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1521,11 +1521,11 @@ static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); } -static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type, - bool channel_type_valid, - const u8 *buf, size_t len, u64 *cookie) +static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type, + bool channel_type_valid, + const u8 *buf, size_t len, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; @@ -1625,6 +1625,6 @@ struct cfg80211_ops mac80211_config_ops = { .set_bitrate_mask = ieee80211_set_bitrate_mask, .remain_on_channel = ieee80211_remain_on_channel, .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, - .action = ieee80211_action, + .mgmt_tx = ieee80211_mgmt_tx, .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, }; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 1bf05bfd149d..e73ae51dc036 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -170,6 +170,7 @@ typedef unsigned __bitwise__ ieee80211_rx_result; #define IEEE80211_RX_RA_MATCH BIT(1) #define IEEE80211_RX_AMSDU BIT(2) #define IEEE80211_RX_FRAGMENTED BIT(3) +#define IEEE80211_MALFORMED_ACTION_FRM BIT(4) /* only add flags here that do not change with subframes of an aMPDU */ struct ieee80211_rx_data { diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 9459aeee0ddc..86f434f234ae 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -177,7 +177,7 @@ static int ieee80211_open(struct net_device *dev) /* no special treatment */ break; case NL80211_IFTYPE_UNSPECIFIED: - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: /* cannot happen */ WARN_ON(1); break; @@ -634,7 +634,7 @@ static void ieee80211_teardown_sdata(struct net_device *dev) case NL80211_IFTYPE_MONITOR: break; case NL80211_IFTYPE_UNSPECIFIED: - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: BUG(); break; } @@ -886,7 +886,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, case NL80211_IFTYPE_AP_VLAN: break; case NL80211_IFTYPE_UNSPECIFIED: - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: BUG(); break; } diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0afccda42a24..a53feac4618c 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -417,6 +417,41 @@ void ieee80211_napi_complete(struct ieee80211_hw *hw) } EXPORT_SYMBOL(ieee80211_napi_complete); +/* There isn't a lot of sense in it, but you can transmit anything you like */ +static const struct ieee80211_txrx_stypes +ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { + [NL80211_IFTYPE_ADHOC] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ACTION >> 4), + }, + [NL80211_IFTYPE_STATION] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4), + }, + [NL80211_IFTYPE_AP] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | + BIT(IEEE80211_STYPE_DISASSOC >> 4) | + BIT(IEEE80211_STYPE_AUTH >> 4) | + BIT(IEEE80211_STYPE_DEAUTH >> 4) | + BIT(IEEE80211_STYPE_ACTION >> 4), + }, + [NL80211_IFTYPE_AP_VLAN] = { + /* copy AP */ + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | + BIT(IEEE80211_STYPE_DISASSOC >> 4) | + BIT(IEEE80211_STYPE_AUTH >> 4) | + BIT(IEEE80211_STYPE_DEAUTH >> 4) | + BIT(IEEE80211_STYPE_ACTION >> 4), + }, +}; + struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, const struct ieee80211_ops *ops) { @@ -446,6 +481,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, if (!wiphy) return NULL; + wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; + wiphy->flags |= WIPHY_FLAG_NETNS_OK | WIPHY_FLAG_4ADDR_AP | WIPHY_FLAG_4ADDR_STATION; diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 4fdbed58ca2f..aa41e382bbb3 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1939,14 +1939,37 @@ static void ieee80211_process_sa_query_req(struct ieee80211_sub_if_data *sdata, ieee80211_tx_skb(sdata, skb); } +static ieee80211_rx_result debug_noinline +ieee80211_rx_h_mgmt_check(struct ieee80211_rx_data *rx) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data; + + /* + * From here on, look only at management frames. + * Data and control frames are already handled, + * and unknown (reserved) frames are useless. + */ + if (rx->skb->len < 24) + return RX_DROP_MONITOR; + + if (!ieee80211_is_mgmt(mgmt->frame_control)) + return RX_DROP_MONITOR; + + if (!(rx->flags & IEEE80211_RX_RA_MATCH)) + return RX_DROP_MONITOR; + + if (ieee80211_drop_unencrypted_mgmt(rx)) + return RX_DROP_UNUSABLE; + + return RX_CONTINUE; +} + static ieee80211_rx_result debug_noinline ieee80211_rx_h_action(struct ieee80211_rx_data *rx) { struct ieee80211_local *local = rx->local; struct ieee80211_sub_if_data *sdata = rx->sdata; struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data; - struct sk_buff *nskb; - struct ieee80211_rx_status *status; int len = rx->skb->len; if (!ieee80211_is_action(mgmt->frame_control)) @@ -1962,9 +1985,6 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) if (!(rx->flags & IEEE80211_RX_RA_MATCH)) return RX_DROP_UNUSABLE; - if (ieee80211_drop_unencrypted_mgmt(rx)) - return RX_DROP_UNUSABLE; - switch (mgmt->u.action.category) { case WLAN_CATEGORY_BACK: /* @@ -2055,17 +2075,36 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) goto queue; } + return RX_CONTINUE; + invalid: - /* - * For AP mode, hostapd is responsible for handling any action - * frames that we didn't handle, including returning unknown - * ones. For all other modes we will return them to the sender, - * setting the 0x80 bit in the action category, as required by - * 802.11-2007 7.3.1.11. - */ - if (sdata->vif.type == NL80211_IFTYPE_AP || - sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - return RX_DROP_MONITOR; + rx->flags |= IEEE80211_MALFORMED_ACTION_FRM; + /* will return in the next handlers */ + return RX_CONTINUE; + + handled: + if (rx->sta) + rx->sta->rx_packets++; + dev_kfree_skb(rx->skb); + return RX_QUEUED; + + queue: + rx->skb->pkt_type = IEEE80211_SDATA_QUEUE_TYPE_FRAME; + skb_queue_tail(&sdata->skb_queue, rx->skb); + ieee80211_queue_work(&local->hw, &sdata->work); + if (rx->sta) + rx->sta->rx_packets++; + return RX_QUEUED; +} + +static ieee80211_rx_result debug_noinline +ieee80211_rx_h_userspace_mgmt(struct ieee80211_rx_data *rx) +{ + struct ieee80211_rx_status *status; + + /* skip known-bad action frames and return them in the next handler */ + if (rx->flags & IEEE80211_MALFORMED_ACTION_FRM) + return RX_CONTINUE; /* * Getting here means the kernel doesn't know how to handle @@ -2075,10 +2114,44 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) */ status = IEEE80211_SKB_RXCB(rx->skb); - if (cfg80211_rx_action(rx->sdata->dev, status->freq, - rx->skb->data, rx->skb->len, - GFP_ATOMIC)) - goto handled; + if (cfg80211_rx_mgmt(rx->sdata->dev, status->freq, + rx->skb->data, rx->skb->len, + GFP_ATOMIC)) { + if (rx->sta) + rx->sta->rx_packets++; + dev_kfree_skb(rx->skb); + return RX_QUEUED; + } + + + return RX_CONTINUE; +} + +static ieee80211_rx_result debug_noinline +ieee80211_rx_h_action_return(struct ieee80211_rx_data *rx) +{ + struct ieee80211_local *local = rx->local; + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data; + struct sk_buff *nskb; + struct ieee80211_sub_if_data *sdata = rx->sdata; + + if (!ieee80211_is_action(mgmt->frame_control)) + return RX_CONTINUE; + + /* + * For AP mode, hostapd is responsible for handling any action + * frames that we didn't handle, including returning unknown + * ones. For all other modes we will return them to the sender, + * setting the 0x80 bit in the action category, as required by + * 802.11-2007 7.3.1.11. + * Newer versions of hostapd shall also use the management frame + * registration mechanisms, but older ones still use cooked + * monitor interfaces so push all frames there. + */ + if (!(rx->flags & IEEE80211_MALFORMED_ACTION_FRM) && + (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) + return RX_DROP_MONITOR; /* do not return rejected action frames */ if (mgmt->u.action.category & 0x80) @@ -2097,20 +2170,8 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) ieee80211_tx_skb(rx->sdata, nskb); } - - handled: - if (rx->sta) - rx->sta->rx_packets++; dev_kfree_skb(rx->skb); return RX_QUEUED; - - queue: - rx->skb->pkt_type = IEEE80211_SDATA_QUEUE_TYPE_FRAME; - skb_queue_tail(&sdata->skb_queue, rx->skb); - ieee80211_queue_work(&local->hw, &sdata->work); - if (rx->sta) - rx->sta->rx_packets++; - return RX_QUEUED; } static ieee80211_rx_result debug_noinline @@ -2121,15 +2182,6 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) struct ieee80211_mgmt *mgmt = (void *)rx->skb->data; __le16 stype; - if (!(rx->flags & IEEE80211_RX_RA_MATCH)) - return RX_DROP_MONITOR; - - if (rx->skb->len < 24) - return RX_DROP_MONITOR; - - if (ieee80211_drop_unencrypted_mgmt(rx)) - return RX_DROP_UNUSABLE; - rxs = ieee80211_work_rx_mgmt(rx->sdata, rx->skb); if (rxs != RX_CONTINUE) return rxs; @@ -2374,7 +2426,10 @@ static void ieee80211_rx_handlers(struct ieee80211_rx_data *rx, if (res != RX_CONTINUE) goto rxh_next; + CALL_RXH(ieee80211_rx_h_mgmt_check) CALL_RXH(ieee80211_rx_h_action) + CALL_RXH(ieee80211_rx_h_userspace_mgmt) + CALL_RXH(ieee80211_rx_h_action_return) CALL_RXH(ieee80211_rx_h_mgmt) rxh_next: @@ -2527,7 +2582,7 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, break; case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_UNSPECIFIED: - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: /* should never get here */ WARN_ON(1); break; diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 10caec5ea8fa..67a35841bef0 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -296,7 +296,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) } if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) - cfg80211_action_tx_status( + cfg80211_mgmt_tx_status( skb->dev, (unsigned long) skb, skb->data, skb->len, !!(info->flags & IEEE80211_TX_STAT_ACK), GFP_ATOMIC); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 748387d45bc0..cd2b485fed4f 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -471,7 +471,7 @@ void ieee80211_iterate_active_interfaces( list_for_each_entry(sdata, &local->interfaces, list) { switch (sdata->vif.type) { - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: case NL80211_IFTYPE_UNSPECIFIED: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_AP_VLAN: @@ -505,7 +505,7 @@ void ieee80211_iterate_active_interfaces_atomic( list_for_each_entry_rcu(sdata, &local->interfaces, list) { switch (sdata->vif.type) { - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: case NL80211_IFTYPE_UNSPECIFIED: case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_AP_VLAN: @@ -1189,7 +1189,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) /* ignore virtual */ break; case NL80211_IFTYPE_UNSPECIFIED: - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: WARN_ON(1); break; } diff --git a/net/wireless/core.c b/net/wireless/core.c index c70909c3eae4..d52630bbab04 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -433,7 +433,7 @@ int wiphy_register(struct wiphy *wiphy) /* sanity check ifmodes */ WARN_ON(!ifmodes); - ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1; + ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; if (WARN_ON(ifmodes != wiphy->interface_modes)) wiphy->interface_modes = ifmodes; @@ -685,8 +685,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); INIT_LIST_HEAD(&wdev->event_list); spin_lock_init(&wdev->event_lock); - INIT_LIST_HEAD(&wdev->action_registrations); - spin_lock_init(&wdev->action_registrations_lock); + INIT_LIST_HEAD(&wdev->mgmt_registrations); + spin_lock_init(&wdev->mgmt_registrations_lock); mutex_lock(&rdev->devlist_mtx); list_add_rcu(&wdev->list, &rdev->netdev_list); @@ -806,7 +806,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, sysfs_remove_link(&dev->dev.kobj, "phy80211"); list_del_rcu(&wdev->list); rdev->devlist_generation++; - cfg80211_mlme_purge_actions(wdev); + cfg80211_mlme_purge_registrations(wdev); #ifdef CONFIG_CFG80211_WEXT kfree(wdev->wext.keys); #endif diff --git a/net/wireless/core.h b/net/wireless/core.h index 63d57ae399c3..58ab2c791d28 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -331,16 +331,17 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, const u8 *resp_ie, size_t resp_ie_len, u16 status, bool wextev, struct cfg80211_bss *bss); -int cfg80211_mlme_register_action(struct wireless_dev *wdev, u32 snd_pid, - const u8 *match_data, int match_len); -void cfg80211_mlme_unregister_actions(struct wireless_dev *wdev, u32 nlpid); -void cfg80211_mlme_purge_actions(struct wireless_dev *wdev); -int cfg80211_mlme_action(struct cfg80211_registered_device *rdev, - struct net_device *dev, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type, - bool channel_type_valid, - const u8 *buf, size_t len, u64 *cookie); +int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, + u16 frame_type, const u8 *match_data, + int match_len); +void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid); +void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev); +int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type, + bool channel_type_valid, + const u8 *buf, size_t len, u64 *cookie); /* SME */ int __cfg80211_connect(struct cfg80211_registered_device *rdev, diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index ee0af32ed59e..8515b1e5c578 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -748,31 +748,51 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, } EXPORT_SYMBOL(cfg80211_new_sta); -struct cfg80211_action_registration { +struct cfg80211_mgmt_registration { struct list_head list; u32 nlpid; int match_len; + __le16 frame_type; + u8 match[]; }; -int cfg80211_mlme_register_action(struct wireless_dev *wdev, u32 snd_pid, - const u8 *match_data, int match_len) +int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, + u16 frame_type, const u8 *match_data, + int match_len) { - struct cfg80211_action_registration *reg, *nreg; + struct cfg80211_mgmt_registration *reg, *nreg; int err = 0; + u16 mgmt_type; + + if (!wdev->wiphy->mgmt_stypes) + return -EOPNOTSUPP; + + if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) + return -EINVAL; + + if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) + return -EINVAL; + + mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; + if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) + return -EINVAL; nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL); if (!nreg) return -ENOMEM; - spin_lock_bh(&wdev->action_registrations_lock); + spin_lock_bh(&wdev->mgmt_registrations_lock); - list_for_each_entry(reg, &wdev->action_registrations, list) { + list_for_each_entry(reg, &wdev->mgmt_registrations, list) { int mlen = min(match_len, reg->match_len); + if (frame_type != le16_to_cpu(reg->frame_type)) + continue; + if (memcmp(reg->match, match_data, mlen) == 0) { err = -EALREADY; break; @@ -787,62 +807,75 @@ int cfg80211_mlme_register_action(struct wireless_dev *wdev, u32 snd_pid, memcpy(nreg->match, match_data, match_len); nreg->match_len = match_len; nreg->nlpid = snd_pid; - list_add(&nreg->list, &wdev->action_registrations); + nreg->frame_type = cpu_to_le16(frame_type); + list_add(&nreg->list, &wdev->mgmt_registrations); out: - spin_unlock_bh(&wdev->action_registrations_lock); + spin_unlock_bh(&wdev->mgmt_registrations_lock); return err; } -void cfg80211_mlme_unregister_actions(struct wireless_dev *wdev, u32 nlpid) +void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid) { - struct cfg80211_action_registration *reg, *tmp; + struct cfg80211_mgmt_registration *reg, *tmp; - spin_lock_bh(&wdev->action_registrations_lock); + spin_lock_bh(&wdev->mgmt_registrations_lock); - list_for_each_entry_safe(reg, tmp, &wdev->action_registrations, list) { + list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { if (reg->nlpid == nlpid) { list_del(®->list); kfree(reg); } } - spin_unlock_bh(&wdev->action_registrations_lock); + spin_unlock_bh(&wdev->mgmt_registrations_lock); } -void cfg80211_mlme_purge_actions(struct wireless_dev *wdev) +void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev) { - struct cfg80211_action_registration *reg, *tmp; + struct cfg80211_mgmt_registration *reg, *tmp; - spin_lock_bh(&wdev->action_registrations_lock); + spin_lock_bh(&wdev->mgmt_registrations_lock); - list_for_each_entry_safe(reg, tmp, &wdev->action_registrations, list) { + list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { list_del(®->list); kfree(reg); } - spin_unlock_bh(&wdev->action_registrations_lock); + spin_unlock_bh(&wdev->mgmt_registrations_lock); } -int cfg80211_mlme_action(struct cfg80211_registered_device *rdev, - struct net_device *dev, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type, - bool channel_type_valid, - const u8 *buf, size_t len, u64 *cookie) +int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type, + bool channel_type_valid, + const u8 *buf, size_t len, u64 *cookie) { struct wireless_dev *wdev = dev->ieee80211_ptr; const struct ieee80211_mgmt *mgmt; + u16 stype; + + if (!wdev->wiphy->mgmt_stypes) + return -EOPNOTSUPP; - if (rdev->ops->action == NULL) + if (!rdev->ops->mgmt_tx) return -EOPNOTSUPP; + if (len < 24 + 1) return -EINVAL; mgmt = (const struct ieee80211_mgmt *) buf; - if (!ieee80211_is_action(mgmt->frame_control)) + + if (!ieee80211_is_mgmt(mgmt->frame_control)) return -EINVAL; - if (mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { + + stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; + if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4))) + return -EINVAL; + + if (ieee80211_is_action(mgmt->frame_control) && + mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { /* Verify that we are associated with the destination AP */ wdev_lock(wdev); @@ -863,64 +896,75 @@ int cfg80211_mlme_action(struct cfg80211_registered_device *rdev, return -EINVAL; /* Transmit the Action frame as requested by user space */ - return rdev->ops->action(&rdev->wiphy, dev, chan, channel_type, - channel_type_valid, buf, len, cookie); + return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, channel_type, + channel_type_valid, buf, len, cookie); } -bool cfg80211_rx_action(struct net_device *dev, int freq, const u8 *buf, - size_t len, gfp_t gfp) +bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, + size_t len, gfp_t gfp) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - struct cfg80211_action_registration *reg; - const u8 *action_data; - int action_data_len; + struct cfg80211_mgmt_registration *reg; + const struct ieee80211_txrx_stypes *stypes = + &wiphy->mgmt_stypes[wdev->iftype]; + struct ieee80211_mgmt *mgmt = (void *)buf; + const u8 *data; + int data_len; bool result = false; + __le16 ftype = mgmt->frame_control & + cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE); + u16 stype; - /* frame length - min size excluding category */ - action_data_len = len - (IEEE80211_MIN_ACTION_SIZE - 1); + stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4; - /* action data starts with category */ - action_data = buf + IEEE80211_MIN_ACTION_SIZE - 1; + if (!(stypes->rx & BIT(stype))) + return false; - spin_lock_bh(&wdev->action_registrations_lock); + data = buf + ieee80211_hdrlen(mgmt->frame_control); + data_len = len - ieee80211_hdrlen(mgmt->frame_control); + + spin_lock_bh(&wdev->mgmt_registrations_lock); + + list_for_each_entry(reg, &wdev->mgmt_registrations, list) { + if (reg->frame_type != ftype) + continue; - list_for_each_entry(reg, &wdev->action_registrations, list) { - if (reg->match_len > action_data_len) + if (reg->match_len > data_len) continue; - if (memcmp(reg->match, action_data, reg->match_len)) + if (memcmp(reg->match, data, reg->match_len)) continue; /* found match! */ /* Indicate the received Action frame to user space */ - if (nl80211_send_action(rdev, dev, reg->nlpid, freq, - buf, len, gfp)) + if (nl80211_send_mgmt(rdev, dev, reg->nlpid, freq, + buf, len, gfp)) continue; result = true; break; } - spin_unlock_bh(&wdev->action_registrations_lock); + spin_unlock_bh(&wdev->mgmt_registrations_lock); return result; } -EXPORT_SYMBOL(cfg80211_rx_action); +EXPORT_SYMBOL(cfg80211_rx_mgmt); -void cfg80211_action_tx_status(struct net_device *dev, u64 cookie, - const u8 *buf, size_t len, bool ack, gfp_t gfp) +void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, + const u8 *buf, size_t len, bool ack, gfp_t gfp) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); /* Indicate TX status of the Action frame to user space */ - nl80211_send_action_tx_status(rdev, dev, cookie, buf, len, ack, gfp); + nl80211_send_mgmt_tx_status(rdev, dev, cookie, buf, len, ack, gfp); } -EXPORT_SYMBOL(cfg80211_action_tx_status); +EXPORT_SYMBOL(cfg80211_mgmt_tx_status); void cfg80211_cqm_rssi_notify(struct net_device *dev, enum nl80211_cqm_rssi_threshold_event rssi_event, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index bb5b78eebeb2..927ffbd2aebc 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -156,6 +156,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, + [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, }; /* policy for the attributes */ @@ -437,6 +438,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, struct ieee80211_rate *rate; int i; u16 ifmodes = dev->wiphy.interface_modes; + const struct ieee80211_txrx_stypes *mgmt_stypes = + dev->wiphy.mgmt_stypes; hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); if (!hdr) @@ -587,7 +590,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, CMD(flush_pmksa, FLUSH_PMKSA); CMD(remain_on_channel, REMAIN_ON_CHANNEL); CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); - CMD(action, ACTION); + CMD(mgmt_tx, FRAME); if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { i++; NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS); @@ -608,6 +611,53 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, nla_nest_end(msg, nl_cmds); + if (mgmt_stypes) { + u16 stypes; + struct nlattr *nl_ftypes, *nl_ifs; + enum nl80211_iftype ift; + + nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); + if (!nl_ifs) + goto nla_put_failure; + + for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { + nl_ftypes = nla_nest_start(msg, ift); + if (!nl_ftypes) + goto nla_put_failure; + i = 0; + stypes = mgmt_stypes[ift].tx; + while (stypes) { + if (stypes & 1) + NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, + (i << 4) | IEEE80211_FTYPE_MGMT); + stypes >>= 1; + i++; + } + nla_nest_end(msg, nl_ftypes); + } + + nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); + if (!nl_ifs) + goto nla_put_failure; + + for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { + nl_ftypes = nla_nest_start(msg, ift); + if (!nl_ftypes) + goto nla_put_failure; + i = 0; + stypes = mgmt_stypes[ift].rx; + while (stypes) { + if (stypes & 1) + NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, + (i << 4) | IEEE80211_FTYPE_MGMT); + stypes >>= 1; + i++; + } + nla_nest_end(msg, nl_ftypes); + } + nla_nest_end(msg, nl_ifs); + } + return genlmsg_end(msg, hdr); nla_put_failure: @@ -4732,17 +4782,18 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, return err; } -static int nl80211_register_action(struct sk_buff *skb, struct genl_info *info) +static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev; struct net_device *dev; + u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; int err; if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) return -EINVAL; - if (nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]) < 1) - return -EINVAL; + if (info->attrs[NL80211_ATTR_FRAME_TYPE]) + frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); rtnl_lock(); @@ -4757,12 +4808,13 @@ static int nl80211_register_action(struct sk_buff *skb, struct genl_info *info) } /* not much point in registering if we can't reply */ - if (!rdev->ops->action) { + if (!rdev->ops->mgmt_tx) { err = -EOPNOTSUPP; goto out; } - err = cfg80211_mlme_register_action(dev->ieee80211_ptr, info->snd_pid, + err = cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid, + frame_type, nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); out: @@ -4773,7 +4825,7 @@ static int nl80211_register_action(struct sk_buff *skb, struct genl_info *info) return err; } -static int nl80211_action(struct sk_buff *skb, struct genl_info *info) +static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev; struct net_device *dev; @@ -4796,7 +4848,7 @@ static int nl80211_action(struct sk_buff *skb, struct genl_info *info) if (err) goto unlock_rtnl; - if (!rdev->ops->action) { + if (!rdev->ops->mgmt_tx) { err = -EOPNOTSUPP; goto out; } @@ -4839,17 +4891,17 @@ static int nl80211_action(struct sk_buff *skb, struct genl_info *info) } hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, - NL80211_CMD_ACTION); + NL80211_CMD_FRAME); if (IS_ERR(hdr)) { err = PTR_ERR(hdr); goto free_msg; } - err = cfg80211_mlme_action(rdev, dev, chan, channel_type, - channel_type_valid, - nla_data(info->attrs[NL80211_ATTR_FRAME]), - nla_len(info->attrs[NL80211_ATTR_FRAME]), - &cookie); + err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, channel_type, + channel_type_valid, + nla_data(info->attrs[NL80211_ATTR_FRAME]), + nla_len(info->attrs[NL80211_ATTR_FRAME]), + &cookie); if (err) goto free_msg; @@ -5348,14 +5400,14 @@ static struct genl_ops nl80211_ops[] = { .flags = GENL_ADMIN_PERM, }, { - .cmd = NL80211_CMD_REGISTER_ACTION, - .doit = nl80211_register_action, + .cmd = NL80211_CMD_REGISTER_FRAME, + .doit = nl80211_register_mgmt, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, { - .cmd = NL80211_CMD_ACTION, - .doit = nl80211_action, + .cmd = NL80211_CMD_FRAME, + .doit = nl80211_tx_mgmt, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, @@ -6055,9 +6107,9 @@ void nl80211_send_sta_event(struct cfg80211_registered_device *rdev, nl80211_mlme_mcgrp.id, gfp); } -int nl80211_send_action(struct cfg80211_registered_device *rdev, - struct net_device *netdev, u32 nlpid, - int freq, const u8 *buf, size_t len, gfp_t gfp) +int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, + struct net_device *netdev, u32 nlpid, + int freq, const u8 *buf, size_t len, gfp_t gfp) { struct sk_buff *msg; void *hdr; @@ -6067,7 +6119,7 @@ int nl80211_send_action(struct cfg80211_registered_device *rdev, if (!msg) return -ENOMEM; - hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ACTION); + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); if (!hdr) { nlmsg_free(msg); return -ENOMEM; @@ -6095,10 +6147,10 @@ int nl80211_send_action(struct cfg80211_registered_device *rdev, return -ENOBUFS; } -void nl80211_send_action_tx_status(struct cfg80211_registered_device *rdev, - struct net_device *netdev, u64 cookie, - const u8 *buf, size_t len, bool ack, - gfp_t gfp) +void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev, + struct net_device *netdev, u64 cookie, + const u8 *buf, size_t len, bool ack, + gfp_t gfp) { struct sk_buff *msg; void *hdr; @@ -6107,7 +6159,7 @@ void nl80211_send_action_tx_status(struct cfg80211_registered_device *rdev, if (!msg) return; - hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ACTION_TX_STATUS); + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); if (!hdr) { nlmsg_free(msg); return; @@ -6194,7 +6246,7 @@ static int nl80211_netlink_notify(struct notifier_block * nb, list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) list_for_each_entry_rcu(wdev, &rdev->netdev_list, list) - cfg80211_mlme_unregister_actions(wdev, notify->pid); + cfg80211_mlme_unregister_socket(wdev, notify->pid); rcu_read_unlock(); diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index 2ad7fbc7d9f1..30d2f939150d 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -74,13 +74,13 @@ void nl80211_send_sta_event(struct cfg80211_registered_device *rdev, struct net_device *dev, const u8 *mac_addr, struct station_info *sinfo, gfp_t gfp); -int nl80211_send_action(struct cfg80211_registered_device *rdev, - struct net_device *netdev, u32 nlpid, int freq, - const u8 *buf, size_t len, gfp_t gfp); -void nl80211_send_action_tx_status(struct cfg80211_registered_device *rdev, - struct net_device *netdev, u64 cookie, - const u8 *buf, size_t len, bool ack, - gfp_t gfp); +int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, + struct net_device *netdev, u32 nlpid, int freq, + const u8 *buf, size_t len, gfp_t gfp); +void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev, + struct net_device *netdev, u64 cookie, + const u8 *buf, size_t len, bool ack, + gfp_t gfp); void nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev, diff --git a/net/wireless/util.c b/net/wireless/util.c index 1eb24162be61..8d961cc4ae98 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -823,7 +823,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, /* monitor can't bridge anyway */ break; case NL80211_IFTYPE_UNSPECIFIED: - case __NL80211_IFTYPE_AFTER_LAST: + case NUM_NL80211_IFTYPES: /* not happening */ break; } -- cgit v1.2.3 From 74b70a4e38d542843fccfb367dce1ac861cc3890 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 24 Aug 2010 12:15:53 +0200 Subject: nl80211: fix missing nesting commit 95a6ccbb46c70cff376684c752831c014c87029d Author: Johannes Berg Date: Thu Aug 12 15:38:38 2010 +0200 cfg80211/mac80211: extensible frame processing introduced a netlink bug that caused parsing errors in userspace because it forgot to close a nesting, which would advertise a nesting length of zero to userspace, which then completely threw off parsing and led to Illegal nla->nla_type == 0 being printed by libnl. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 927ffbd2aebc..49f5ca35e787 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -636,6 +636,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, nla_nest_end(msg, nl_ftypes); } + nla_nest_end(msg, nl_ifs); + nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); if (!nl_ifs) goto nla_put_failure; -- cgit v1.2.3 From 7d64b7cc1fc33bab24567903a93f699d11649c0b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 27 Aug 2010 14:26:51 +0300 Subject: cfg80211: allow vendor specific cipher suites cfg80211 currently rejects all cipher suites it doesn't know about for key length checking purposes. This can lead to inconsistencies when a driver advertises an algorithm that cfg80211 doesn't know about. Remove this rejection so drivers can specify any algorithm they like. Signed-off-by: Johannes Berg Signed-off-by: Juuso Oikarinen Signed-off-by: John W. Linville --- net/wireless/util.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/util.c b/net/wireless/util.c index 8d961cc4ae98..bca32eb8f446 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -183,7 +183,14 @@ int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, return -EINVAL; break; default: - return -EINVAL; + /* + * We don't know anything about this algorithm, + * allow using it -- but the driver must check + * all parameters! We still check below whether + * or not the driver supports this algorithm, + * of course. + */ + break; } if (params->seq) { -- cgit v1.2.3 From c0692b8fe29fb4d4dad33487aabf3ed7e1e880c0 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 27 Aug 2010 14:26:53 +0300 Subject: cfg80211: allow changing port control protocol Some vendor specified mechanisms for 802.1X-style functionality use a different protocol than EAP (even if EAP is vendor-extensible). Allow setting the ethertype for the protocol when a driver has support for this. The default if unspecified is EAP, of course. Note: This is suitable only for station mode, not for AP implementation. Signed-off-by: Johannes Berg Signed-off-by: Juuso Oikarinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 16 +++++++++++++++- include/net/cfg80211.h | 24 +++++++++++++++++------- net/wireless/nl80211.c | 25 ++++++++++++++++++++++--- net/wireless/wext-sme.c | 2 ++ 4 files changed, 56 insertions(+), 11 deletions(-) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index ec1690da7845..31603e8b5581 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -295,7 +295,9 @@ * auth and assoc steps. For this, you need to specify the SSID in a * %NL80211_ATTR_SSID attribute, and can optionally specify the association * IEs in %NL80211_ATTR_IE, %NL80211_ATTR_AUTH_TYPE, %NL80211_ATTR_MAC, - * %NL80211_ATTR_WIPHY_FREQ and %NL80211_ATTR_CONTROL_PORT. + * %NL80211_ATTR_WIPHY_FREQ, %NL80211_ATTR_CONTROL_PORT, + * %NL80211_ATTR_CONTROL_PORT_ETHERTYPE and + * %NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT. * It is also sent as an event, with the BSSID and response IEs when the * connection is established or failed to be established. This can be * determined by the STATUS_CODE attribute. @@ -686,6 +688,15 @@ enum nl80211_commands { * request, the driver will assume that the port is unauthorized until * authorized by user space. Otherwise, port is marked authorized by * default in station mode. + * @NL80211_ATTR_CONTROL_PORT_ETHERTYPE: A 16-bit value indicating the + * ethertype that will be used for key negotiation. It can be + * specified with the associate and connect commands. If it is not + * specified, the value defaults to 0x888E (PAE, 802.1X). This + * attribute is also used as a flag in the wiphy information to + * indicate that protocols other than PAE are supported. + * @NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT: When included along with + * %NL80211_ATTR_CONTROL_PORT_ETHERTYPE, indicates that the custom + * ethertype frames used for key negotiation must not be encrypted. * * @NL80211_ATTR_TESTDATA: Testmode data blob, passed through to the driver. * We recommend using nested, driver-specific attributes within this. @@ -951,6 +962,9 @@ enum nl80211_attrs { NL80211_ATTR_RX_FRAME_TYPES, NL80211_ATTR_FRAME_TYPE, + NL80211_ATTR_CONTROL_PORT_ETHERTYPE, + NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f2740537b5d6..4c8c727d0cca 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -763,6 +763,10 @@ const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is * required to assume that the port is unauthorized until authorized by * user space. Otherwise, port is marked authorized by default. + * @control_port_ethertype: the control port protocol that should be + * allowed through even on unauthorized ports + * @control_port_no_encrypt: TRUE to prevent encryption of control port + * protocol frames. */ struct cfg80211_crypto_settings { u32 wpa_versions; @@ -772,6 +776,8 @@ struct cfg80211_crypto_settings { int n_akm_suites; u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; bool control_port; + __be16 control_port_ethertype; + bool control_port_no_encrypt; }; /** @@ -1293,15 +1299,19 @@ struct cfg80211_ops { * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station * on a VLAN interface) * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station + * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the + * control port protocol ethertype. The device also honours the + * control_port_no_encrypt flag. */ enum wiphy_flags { - WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), - WIPHY_FLAG_STRICT_REGULATORY = BIT(1), - WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), - WIPHY_FLAG_NETNS_OK = BIT(3), - WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), - WIPHY_FLAG_4ADDR_AP = BIT(5), - WIPHY_FLAG_4ADDR_STATION = BIT(6), + WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), + WIPHY_FLAG_STRICT_REGULATORY = BIT(1), + WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), + WIPHY_FLAG_NETNS_OK = BIT(3), + WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), + WIPHY_FLAG_4ADDR_AP = BIT(5), + WIPHY_FLAG_4ADDR_STATION = BIT(6), + WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), }; struct mac_address { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 49f5ca35e787..85a23de7bff3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -136,6 +136,8 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { .len = sizeof(struct nl80211_sta_flag_update), }, [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, + [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, + [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, @@ -474,6 +476,9 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, dev->wiphy.max_num_pmkids); + if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) + NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE); + nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); if (!nl_modes) goto nla_put_failure; @@ -3691,7 +3696,8 @@ unlock_rtnl: return err; } -static int nl80211_crypto_settings(struct genl_info *info, +static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, + struct genl_info *info, struct cfg80211_crypto_settings *settings, int cipher_limit) { @@ -3699,6 +3705,19 @@ static int nl80211_crypto_settings(struct genl_info *info, settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; + if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { + u16 proto; + proto = nla_get_u16( + info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); + settings->control_port_ethertype = cpu_to_be16(proto); + if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && + proto != ETH_P_PAE) + return -EINVAL; + if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) + settings->control_port_no_encrypt = true; + } else + settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); + if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { void *data; int len, i; @@ -3826,7 +3845,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_PREV_BSSID]) prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); - err = nl80211_crypto_settings(info, &crypto, 1); + err = nl80211_crypto_settings(rdev, info, &crypto, 1); if (!err) err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid, ssid, ssid_len, ie, ie_len, use_mfp, @@ -4303,7 +4322,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; - err = nl80211_crypto_settings(info, &connect.crypto, + err = nl80211_crypto_settings(rdev, info, &connect.crypto, NL80211_MAX_NR_CIPHER_SUITES); if (err) return err; diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c index 9818198add8a..6fffe62d7c25 100644 --- a/net/wireless/wext-sme.c +++ b/net/wireless/wext-sme.c @@ -197,6 +197,8 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev, wdev->wext.connect.ssid_len = len; wdev->wext.connect.crypto.control_port = false; + wdev->wext.connect.crypto.control_port_ethertype = + cpu_to_be16(ETH_P_PAE); err = cfg80211_mgd_wext_connect(rdev, wdev); out: -- cgit v1.2.3 From 3653910714a4a9b19aadb202c24f7b1ae61d3556 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 28 Aug 2010 17:41:06 +0200 Subject: net/wireless: Remove double test The same expression is tested twice and the result is the same each time. The sematic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @expression@ expression E; @@ ( * E || ... || E | * E && ... && E ) // Signed-off-by: Julia Lawall Signed-off-by: John W. Linville --- net/wireless/wext-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c index 0ef17bc42bac..40385936e286 100644 --- a/net/wireless/wext-core.c +++ b/net/wireless/wext-core.c @@ -611,7 +611,7 @@ struct iw_statistics *get_wireless_stats(struct net_device *dev) #endif #ifdef CONFIG_CFG80211_WEXT - if (dev->ieee80211_ptr && dev->ieee80211_ptr && + if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy && dev->ieee80211_ptr->wiphy->wext && dev->ieee80211_ptr->wiphy->wext->get_wireless_stats) -- cgit v1.2.3 From 942623166df3256821e8451273bc07737745e3cb Mon Sep 17 00:00:00 2001 From: Nikitas Angelinas Date: Wed, 8 Sep 2010 22:29:53 +0100 Subject: net/wireless: use ARRAY_SIZE macro in radiotap.c Replace sizeof(rtap_namespace_sizes) / sizeof(rtap_namespace_sizes[0]) with ARRAY_SIZE(rtap_namespace_sizes) in net/wireless/radiotap.c Signed-off-by: Nikitas Angelinas Signed-off-by: John W. Linville --- net/wireless/radiotap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/radiotap.c b/net/wireless/radiotap.c index 1332c445d1c7..c774bc0f155e 100644 --- a/net/wireless/radiotap.c +++ b/net/wireless/radiotap.c @@ -14,6 +14,7 @@ * See COPYING for more details. */ +#include #include #include #include @@ -45,7 +46,7 @@ static const struct radiotap_align_size rtap_namespace_sizes[] = { }; static const struct ieee80211_radiotap_namespace radiotap_ns = { - .n_bits = sizeof(rtap_namespace_sizes) / sizeof(rtap_namespace_sizes[0]), + .n_bits = ARRAY_SIZE(rtap_namespace_sizes), .align_size = rtap_namespace_sizes, }; -- cgit v1.2.3 From a1e567c83f541432e687142570215b75bebb1338 Mon Sep 17 00:00:00 2001 From: Bill Jordan Date: Fri, 10 Sep 2010 11:22:32 -0400 Subject: nl80211: Uninitialized variable There is a path in nl80211_set_wiphy where result is tested but uninitialized. I am hitting this path when I attempt: sh# iw dev wlan0 set channel 10 command failed: Unknown error 1069727332 (-1069727332) Signed-off-by: William Jordan Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 85a23de7bff3..1d6ef24254fe 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -833,7 +833,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) struct cfg80211_registered_device *rdev; struct net_device *netdev = NULL; struct wireless_dev *wdev; - int result, rem_txq_params = 0; + int result = 0, rem_txq_params = 0; struct nlattr *nl_txq_params; u32 changed; u8 retry_short = 0, retry_long = 0; -- cgit v1.2.3 From 9c376639297d3dd82d40e54c9cdca8da9dfc22f1 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 20 Aug 2010 15:13:59 -0700 Subject: include/net/cfg80211.h: wiphy_ messages use dev_printk The output becomes: [ 41.261941] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht' Signed-off-by: Joe Perches Signed-off-by: John W. Linville --- include/net/cfg80211.h | 37 ++++++++++++------------------------- net/wireless/core.c | 49 ------------------------------------------------- 2 files changed, 12 insertions(+), 74 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 4c8c727d0cca..a0613ff62c97 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -2558,49 +2558,36 @@ void cfg80211_cqm_rssi_notify(struct net_device *dev, /* wiphy_printk helpers, similar to dev_printk */ #define wiphy_printk(level, wiphy, format, args...) \ - printk(level "%s: " format, wiphy_name(wiphy), ##args) + dev_printk(level, &(wiphy)->dev, format, ##args) #define wiphy_emerg(wiphy, format, args...) \ - wiphy_printk(KERN_EMERG, wiphy, format, ##args) + dev_emerg(&(wiphy)->dev, format, ##args) #define wiphy_alert(wiphy, format, args...) \ - wiphy_printk(KERN_ALERT, wiphy, format, ##args) + dev_alert(&(wiphy)->dev, format, ##args) #define wiphy_crit(wiphy, format, args...) \ - wiphy_printk(KERN_CRIT, wiphy, format, ##args) + dev_crit(&(wiphy)->dev, format, ##args) #define wiphy_err(wiphy, format, args...) \ - wiphy_printk(KERN_ERR, wiphy, format, ##args) + dev_err(&(wiphy)->dev, format, ##args) #define wiphy_warn(wiphy, format, args...) \ - wiphy_printk(KERN_WARNING, wiphy, format, ##args) + dev_warn(&(wiphy)->dev, format, ##args) #define wiphy_notice(wiphy, format, args...) \ - wiphy_printk(KERN_NOTICE, wiphy, format, ##args) + dev_notice(&(wiphy)->dev, format, ##args) #define wiphy_info(wiphy, format, args...) \ - wiphy_printk(KERN_INFO, wiphy, format, ##args) + dev_info(&(wiphy)->dev, format, ##args) -int wiphy_debug(const struct wiphy *wiphy, const char *format, ...) - __attribute__ ((format (printf, 2, 3))); - -#if defined(DEBUG) -#define wiphy_dbg(wiphy, format, args...) \ +#define wiphy_debug(wiphy, format, args...) \ wiphy_printk(KERN_DEBUG, wiphy, format, ##args) -#elif defined(CONFIG_DYNAMIC_DEBUG) + #define wiphy_dbg(wiphy, format, args...) \ - dynamic_pr_debug("%s: " format, wiphy_name(wiphy), ##args) -#else -#define wiphy_dbg(wiphy, format, args...) \ -({ \ - if (0) \ - wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ - 0; \ -}) -#endif + dev_dbg(&(wiphy)->dev, format, ##args) #if defined(VERBOSE_DEBUG) #define wiphy_vdbg wiphy_dbg #else - #define wiphy_vdbg(wiphy, format, args...) \ ({ \ if (0) \ wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ - 0; \ + 0; \ }) #endif diff --git a/net/wireless/core.c b/net/wireless/core.c index d52630bbab04..b8191cf86226 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -912,52 +912,3 @@ static void __exit cfg80211_exit(void) destroy_workqueue(cfg80211_wq); } module_exit(cfg80211_exit); - -static int ___wiphy_printk(const char *level, const struct wiphy *wiphy, - struct va_format *vaf) -{ - if (!wiphy) - return printk("%s(NULL wiphy *): %pV", level, vaf); - - return printk("%s%s: %pV", level, wiphy_name(wiphy), vaf); -} - -int __wiphy_printk(const char *level, const struct wiphy *wiphy, - const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - int r; - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - r = ___wiphy_printk(level, wiphy, &vaf); - va_end(args); - - return r; -} -EXPORT_SYMBOL(__wiphy_printk); - -#define define_wiphy_printk_level(func, kern_level) \ -int func(const struct wiphy *wiphy, const char *fmt, ...) \ -{ \ - struct va_format vaf; \ - va_list args; \ - int r; \ - \ - va_start(args, fmt); \ - \ - vaf.fmt = fmt; \ - vaf.va = &args; \ - \ - r = ___wiphy_printk(kern_level, wiphy, &vaf); \ - va_end(args); \ - \ - return r; \ -} \ -EXPORT_SYMBOL(func); - -define_wiphy_printk_level(wiphy_debug, KERN_DEBUG); -- cgit v1.2.3 From 46a5ebaf02d69e26ee0f47a0b8d2d9bc619240d4 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 15 Sep 2010 13:28:15 +0200 Subject: cfg80211/mac80211: use lockdep_assert_held Instead of using a WARN_ON(!mutex_is_locked()) use lockdep_assert_held() which compiles away completely when lockdep isn't enabled, and also is a more accurate assertion since it checks that the current thread is holding the mutex. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/chan.c | 2 +- net/mac80211/key.c | 2 +- net/mac80211/mlme.c | 2 +- net/mac80211/sta_info.c | 2 +- net/mac80211/util.c | 4 ++-- net/wireless/core.h | 9 ++++++--- net/wireless/reg.c | 6 +++++- 7 files changed, 17 insertions(+), 10 deletions(-) (limited to 'net/wireless') diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 32be11e4c4d9..5b24740fc0b0 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -11,7 +11,7 @@ __ieee80211_get_channel_mode(struct ieee80211_local *local, { struct ieee80211_sub_if_data *sdata; - WARN_ON(!mutex_is_locked(&local->iflist_mtx)); + lockdep_assert_held(&local->iflist_mtx); list_for_each_entry(sdata, &local->interfaces, list) { if (sdata == ignore) diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 3570f8c2bb40..6a63d1abd14d 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -49,7 +49,7 @@ static const u8 bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; static void assert_key_lock(struct ieee80211_local *local) { - WARN_ON(!mutex_is_locked(&local->key_mtx)); + lockdep_assert_held(&local->key_mtx); } static struct ieee80211_sta *get_sta_for_key(struct ieee80211_key *key) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 0cb822cc12e9..bfb0eab5c26d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -92,7 +92,7 @@ enum rx_mgmt_action { /* utils */ static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) { - WARN_ON(!mutex_is_locked(&ifmgd->mtx)); + lockdep_assert_held(&ifmgd->mtx); } /* diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index e356ff80671a..44e10a9de0a7 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -280,7 +280,7 @@ static int sta_info_finish_insert(struct sta_info *sta, bool async) unsigned long flags; int err = 0; - WARN_ON(!mutex_is_locked(&local->sta_mtx)); + lockdep_assert_held(&local->sta_mtx); /* notify driver */ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index bd40b11d5ab9..9f21a69f0917 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1296,9 +1296,9 @@ void ieee80211_recalc_smps(struct ieee80211_local *local, int count = 0; if (forsdata) - WARN_ON(!mutex_is_locked(&forsdata->u.mgd.mtx)); + lockdep_assert_held(&forsdata->u.mgd.mtx); - WARN_ON(!mutex_is_locked(&local->iflist_mtx)); + lockdep_assert_held(&local->iflist_mtx); /* * This function could be improved to handle multiple diff --git a/net/wireless/core.h b/net/wireless/core.h index 58ab2c791d28..37580e090a3d 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -95,7 +95,10 @@ extern struct mutex cfg80211_mutex; extern struct list_head cfg80211_rdev_list; extern int cfg80211_rdev_list_generation; -#define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex)) +static inline void assert_cfg80211_lock(void) +{ + lockdep_assert_held(&cfg80211_mutex); +} /* * You can use this to mark a wiphy_idx as not having an associated wiphy. @@ -202,8 +205,8 @@ static inline void wdev_unlock(struct wireless_dev *wdev) mutex_unlock(&wdev->mtx); } -#define ASSERT_RDEV_LOCK(rdev) WARN_ON(!mutex_is_locked(&(rdev)->mtx)); -#define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(wdev)->mtx)); +#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx) +#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx) enum cfg80211_event_type { EVENT_CONNECT_RESULT, diff --git a/net/wireless/reg.c b/net/wireless/reg.c index b0d9a08447c9..d14bbf960c18 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -74,7 +74,11 @@ const struct ieee80211_regdomain *cfg80211_regdomain; * - last_request */ static DEFINE_MUTEX(reg_mutex); -#define assert_reg_lock() WARN_ON(!mutex_is_locked(®_mutex)) + +static inline void assert_reg_lock(void) +{ + lockdep_assert_held(®_mutex); +} /* Used to queue up regulatory hints */ static LIST_HEAD(reg_requests_list); -- cgit v1.2.3 From 074ac8df9f93f2a35a356d92fd7f16cd846f0a03 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 16 Sep 2010 14:58:22 +0200 Subject: cfg80211/nl80211: introduce p2p device types This adds P2P-STA and P2P-GO as device types so we can distinguish between those and normal STA or AP (respectively) type interfaces. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++++ net/wireless/core.c | 2 ++ net/wireless/mlme.c | 3 ++- net/wireless/nl80211.c | 56 ++++++++++++++++++++++++++++++++++--------------- net/wireless/sme.c | 9 +++++--- net/wireless/util.c | 15 ++++++++++--- 6 files changed, 65 insertions(+), 24 deletions(-) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 31603e8b5581..f0518b0278a9 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1020,6 +1020,8 @@ enum nl80211_attrs { * @NL80211_IFTYPE_WDS: wireless distribution interface * @NL80211_IFTYPE_MONITOR: monitor interface receiving all frames * @NL80211_IFTYPE_MESH_POINT: mesh point + * @NL80211_IFTYPE_P2P_CLIENT: P2P client + * @NL80211_IFTYPE_P2P_GO: P2P group owner * @NL80211_IFTYPE_MAX: highest interface type number currently defined * @NUM_NL80211_IFTYPES: number of defined interface types * @@ -1036,6 +1038,8 @@ enum nl80211_iftype { NL80211_IFTYPE_WDS, NL80211_IFTYPE_MONITOR, NL80211_IFTYPE_MESH_POINT, + NL80211_IFTYPE_P2P_CLIENT, + NL80211_IFTYPE_P2P_GO, /* keep last */ NUM_NL80211_IFTYPES, diff --git a/net/wireless/core.c b/net/wireless/core.c index b8191cf86226..ff9615a7ee7a 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -726,6 +726,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, dev->ethtool_ops = &cfg80211_ethtool_ops; if ((wdev->iftype == NL80211_IFTYPE_STATION || + wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) dev->priv_flags |= IFF_DONT_BRIDGE; break; @@ -734,6 +735,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, case NL80211_IFTYPE_ADHOC: cfg80211_leave_ibss(rdev, dev, true); break; + case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_STATION: wdev_lock(wdev); #ifdef CONFIG_CFG80211_WEXT diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 8515b1e5c578..46f371160896 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -882,7 +882,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, if (!wdev->current_bss || memcmp(wdev->current_bss->pub.bssid, mgmt->bssid, ETH_ALEN) != 0 || - (wdev->iftype == NL80211_IFTYPE_STATION && + ((wdev->iftype == NL80211_IFTYPE_STATION || + wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && memcmp(wdev->current_bss->pub.bssid, mgmt->da, ETH_ALEN) != 0)) { wdev_unlock(wdev); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 1d6ef24254fe..f15b1af2c768 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -410,12 +410,14 @@ static int nl80211_key_allowed(struct wireless_dev *wdev) switch (wdev->iftype) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_P2P_GO: break; case NL80211_IFTYPE_ADHOC: if (!wdev->current_bss) return -ENOLINK; break; case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: if (wdev->sme_state != CFG80211_SME_CONNECTED) return -ENOLINK; break; @@ -766,7 +768,8 @@ static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) wdev->iftype == NL80211_IFTYPE_AP || wdev->iftype == NL80211_IFTYPE_WDS || wdev->iftype == NL80211_IFTYPE_MESH_POINT || - wdev->iftype == NL80211_IFTYPE_MONITOR; + wdev->iftype == NL80211_IFTYPE_MONITOR || + wdev->iftype == NL80211_IFTYPE_P2P_GO; } static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, @@ -1693,7 +1696,8 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) if (err) goto unlock_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EOPNOTSUPP; goto out; } @@ -1785,7 +1789,8 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) goto out; } - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EOPNOTSUPP; goto out; } @@ -2128,10 +2133,12 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) switch (dev->ieee80211_ptr->iftype) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_P2P_GO: /* disallow mesh-specific things */ if (params.plink_action) err = -EINVAL; break; + case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_STATION: /* disallow everything but AUTHORIZED flag */ if (params.plink_action) @@ -2233,7 +2240,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) goto out_rtnl; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) { + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EINVAL; goto out; } @@ -2286,7 +2294,8 @@ static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EINVAL; goto out; } @@ -2660,7 +2669,8 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) goto out; } - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EOPNOTSUPP; goto out; } @@ -3363,6 +3373,7 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags, } switch (wdev->iftype) { + case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_STATION: if (intbss == wdev->current_bss) NLA_PUT_U32(msg, NL80211_BSS_STATUS, @@ -3649,7 +3660,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) goto out; } - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -3804,7 +3816,8 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) goto out; } - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -3888,7 +3901,8 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) goto out; } - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -3954,7 +3968,8 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) goto out; } - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -4332,7 +4347,8 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) if (err) goto unlock_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -4408,7 +4424,8 @@ static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) if (err) goto unlock_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -4496,7 +4513,8 @@ static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -4541,7 +4559,8 @@ static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) if (err) goto out_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) { + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -4823,7 +4842,8 @@ static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) goto unlock_rtnl; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -4875,7 +4895,8 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) } if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto out; } @@ -5093,7 +5114,8 @@ static int nl80211_set_cqm_rssi(struct genl_info *info, goto unlock_rdev; } - if (wdev->iftype != NL80211_IFTYPE_STATION) { + if (wdev->iftype != NL80211_IFTYPE_STATION && + wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) { err = -EOPNOTSUPP; goto unlock_rdev; } diff --git a/net/wireless/sme.c b/net/wireless/sme.c index a8c2d6b877ae..f161b9844542 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -411,7 +411,8 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, ASSERT_WDEV_LOCK(wdev); - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && + wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) return; if (wdev->sme_state != CFG80211_SME_CONNECTING) @@ -548,7 +549,8 @@ void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, ASSERT_WDEV_LOCK(wdev); - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && + wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) return; if (wdev->sme_state != CFG80211_SME_CONNECTED) @@ -644,7 +646,8 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, ASSERT_WDEV_LOCK(wdev); - if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && + wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) return; if (wdev->sme_state != CFG80211_SME_CONNECTED) diff --git a/net/wireless/util.c b/net/wireless/util.c index bca32eb8f446..fb5448f7d55a 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -326,7 +326,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { case cpu_to_le16(IEEE80211_FCTL_TODS): if (unlikely(iftype != NL80211_IFTYPE_AP && - iftype != NL80211_IFTYPE_AP_VLAN)) + iftype != NL80211_IFTYPE_AP_VLAN && + iftype != NL80211_IFTYPE_P2P_GO)) return -1; break; case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): @@ -354,7 +355,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, break; case cpu_to_le16(IEEE80211_FCTL_FROMDS): if ((iftype != NL80211_IFTYPE_STATION && - iftype != NL80211_IFTYPE_MESH_POINT) || + iftype != NL80211_IFTYPE_P2P_CLIENT && + iftype != NL80211_IFTYPE_MESH_POINT) || (is_multicast_ether_addr(dst) && !compare_ether_addr(src, addr))) return -1; @@ -431,6 +433,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, switch (iftype) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_P2P_GO: fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); /* DA BSSID SA */ memcpy(hdr.addr1, skb->data, ETH_ALEN); @@ -439,6 +442,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, hdrlen = 24; break; case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: fc |= cpu_to_le16(IEEE80211_FCTL_TODS); /* BSSID SA DA */ memcpy(hdr.addr1, bssid, ETH_ALEN); @@ -778,7 +782,9 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, /* if it's part of a bridge, reject changing type to station/ibss */ if ((dev->priv_flags & IFF_BRIDGE_PORT) && - (ntype == NL80211_IFTYPE_ADHOC || ntype == NL80211_IFTYPE_STATION)) + (ntype == NL80211_IFTYPE_ADHOC || + ntype == NL80211_IFTYPE_STATION || + ntype == NL80211_IFTYPE_P2P_CLIENT)) return -EBUSY; if (ntype != otype) { @@ -789,6 +795,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, cfg80211_leave_ibss(rdev, dev, false); break; case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: cfg80211_disconnect(rdev, dev, WLAN_REASON_DEAUTH_LEAVING, true); break; @@ -817,9 +824,11 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, if (dev->ieee80211_ptr->use_4addr) break; /* fall through */ + case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_ADHOC: dev->priv_flags |= IFF_DONT_BRIDGE; break; + case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_WDS: -- cgit v1.2.3 From a02cec2155fbea457eca8881870fd2de1a4c4c76 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 22 Sep 2010 20:43:57 +0000 Subject: net: return operator cleanup Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/atmdev.h | 2 +- include/linux/etherdevice.h | 4 +-- include/linux/netdevice.h | 2 +- include/linux/skbuff.h | 6 ++--- include/net/bluetooth/hci_core.h | 2 +- include/net/bluetooth/l2cap.h | 2 +- include/net/inet_ecn.h | 2 +- include/net/ip.h | 4 +-- include/net/ipv6.h | 35 +++++++++++++------------- include/net/irda/irlap.h | 2 +- include/net/irda/irlmp.h | 2 +- include/net/irda/irttp.h | 2 +- include/net/sch_generic.h | 2 +- include/net/sctp/sctp.h | 12 ++++----- include/net/sctp/sm.h | 10 ++++---- include/net/sctp/structs.h | 2 +- include/net/sctp/tsnmap.h | 2 +- include/net/tipc/tipc_msg.h | 10 ++++---- net/802/fc.c | 2 +- net/802/fddi.c | 12 ++++----- net/802/hippi.c | 2 +- net/802/tr.c | 2 +- net/8021q/vlan_core.c | 2 +- net/9p/client.c | 4 +-- net/bluetooth/rfcomm/core.c | 4 +-- net/core/flow.c | 4 +-- net/core/neighbour.c | 6 ++--- net/core/utils.c | 2 +- net/dccp/ccids/lib/loss_interval.c | 2 +- net/econet/af_econet.c | 4 +-- net/ethernet/eth.c | 2 +- net/ipv4/arp.c | 2 +- net/ipv4/datagram.c | 2 +- net/ipv4/inet_diag.c | 2 +- net/ipv4/ip_fragment.c | 4 +-- net/ipv4/ip_gre.c | 2 +- net/ipv4/netfilter/arp_tables.c | 2 +- net/ipv4/route.c | 2 +- net/ipv4/tcp_input.c | 10 ++++---- net/ipv4/tcp_minisocks.c | 2 +- net/ipv4/tcp_output.c | 8 +++--- net/ipv4/tcp_westwood.c | 2 +- net/ipv6/addrconf.c | 2 +- net/ipv6/addrlabel.c | 5 ++-- net/ipv6/af_inet6.c | 6 ++--- net/ipv6/exthdrs_core.c | 4 +-- net/ipv6/ip6_output.c | 4 +-- net/ipv6/ndisc.c | 8 +++--- net/ipv6/netfilter/ip6_tables.c | 14 +++++------ net/ipv6/raw.c | 12 ++++----- net/ipv6/route.c | 14 +++++------ net/ipv6/tcp_ipv6.c | 2 +- net/ipv6/xfrm6_policy.c | 2 +- net/irda/af_irda.c | 14 +++++------ net/irda/discovery.c | 2 +- net/irda/ircomm/ircomm_tty.c | 4 +-- net/irda/irlmp.c | 2 +- net/irda/irlmp_frame.c | 2 +- net/irda/irnet/irnet_irda.c | 22 ++++++++--------- net/irda/irnet/irnet_ppp.c | 8 +++--- net/key/af_key.c | 4 +-- net/mac80211/rate.c | 2 +- net/rfkill/input.c | 2 +- net/rose/rose_link.c | 4 +-- net/sctp/protocol.c | 2 +- net/sctp/socket.c | 6 ++--- net/sunrpc/auth_gss/auth_gss.c | 2 +- net/sunrpc/auth_gss/gss_generic_token.c | 44 ++++++++++++++++----------------- net/sunrpc/auth_gss/gss_krb5_seqnum.c | 2 +- net/sunrpc/auth_gss/gss_mech_switch.c | 2 +- net/sunrpc/sched.c | 2 +- net/tipc/addr.c | 2 +- net/tipc/bcast.c | 2 +- net/tipc/bearer.c | 2 +- net/tipc/dbg.c | 4 +-- net/tipc/link.c | 6 ++--- net/tipc/link.h | 16 ++++++------ net/tipc/msg.h | 6 ++--- net/tipc/name_table.c | 2 +- net/tipc/node.c | 6 ++--- net/tipc/port.h | 2 +- net/tipc/socket.c | 2 +- net/tipc/subscr.c | 2 +- net/wireless/core.h | 2 +- 84 files changed, 220 insertions(+), 222 deletions(-) (limited to 'net/wireless') diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index f6481daf6e52..a8e4e832cdbb 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -449,7 +449,7 @@ void vcc_insert_socket(struct sock *sk); static inline int atm_guess_pdu2truesize(int size) { - return (SKB_DATA_ALIGN(size) + sizeof(struct skb_shared_info)); + return SKB_DATA_ALIGN(size) + sizeof(struct skb_shared_info); } diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index fb6aa6070921..f16a01081e15 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -71,7 +71,7 @@ static inline int is_zero_ether_addr(const u8 *addr) */ static inline int is_multicast_ether_addr(const u8 *addr) { - return (0x01 & addr[0]); + return 0x01 & addr[0]; } /** @@ -82,7 +82,7 @@ static inline int is_multicast_ether_addr(const u8 *addr) */ static inline int is_local_ether_addr(const u8 *addr) { - return (0x02 & addr[0]); + return 0x02 & addr[0]; } /** diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f7f1302138af..45dcda5bfda9 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1676,7 +1676,7 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) */ static inline int netif_is_multiqueue(const struct net_device *dev) { - return (dev->num_tx_queues > 1); + return dev->num_tx_queues > 1; } extern void netif_set_real_num_tx_queues(struct net_device *dev, diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 9e8085a89589..b2c41d19735c 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -601,7 +601,7 @@ static inline int skb_queue_empty(const struct sk_buff_head *list) static inline bool skb_queue_is_last(const struct sk_buff_head *list, const struct sk_buff *skb) { - return (skb->next == (struct sk_buff *) list); + return skb->next == (struct sk_buff *)list; } /** @@ -614,7 +614,7 @@ static inline bool skb_queue_is_last(const struct sk_buff_head *list, static inline bool skb_queue_is_first(const struct sk_buff_head *list, const struct sk_buff *skb) { - return (skb->prev == (struct sk_buff *) list); + return skb->prev == (struct sk_buff *)list; } /** @@ -2156,7 +2156,7 @@ static inline u16 skb_get_rx_queue(const struct sk_buff *skb) static inline bool skb_rx_queue_recorded(const struct sk_buff *skb) { - return (skb->queue_mapping != 0); + return skb->queue_mapping != 0; } extern u16 skb_tx_hash(const struct net_device *dev, diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 4568b938ca35..ebec8c9a929d 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -233,7 +233,7 @@ static inline void inquiry_cache_init(struct hci_dev *hdev) static inline int inquiry_cache_empty(struct hci_dev *hdev) { struct inquiry_cache *c = &hdev->inq_cache; - return (c->list == NULL); + return c->list == NULL; } static inline long inquiry_cache_age(struct hci_dev *hdev) diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index 6c241444f902..c819c8bf9b68 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -414,7 +414,7 @@ static inline int l2cap_tx_window_full(struct sock *sk) if (sub < 0) sub += 64; - return (sub == pi->remote_tx_win); + return sub == pi->remote_tx_win; } #define __get_txseq(ctrl) ((ctrl) & L2CAP_CTRL_TXSEQ) >> 1 diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h index 9b5d08f4f6e8..88bdd010d65d 100644 --- a/include/net/inet_ecn.h +++ b/include/net/inet_ecn.h @@ -27,7 +27,7 @@ static inline int INET_ECN_is_not_ect(__u8 dsfield) static inline int INET_ECN_is_capable(__u8 dsfield) { - return (dsfield & INET_ECN_ECT_0); + return dsfield & INET_ECN_ECT_0; } static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner) diff --git a/include/net/ip.h b/include/net/ip.h index 7691aca133db..dbee3fe260e1 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -238,9 +238,9 @@ int ip_decrease_ttl(struct iphdr *iph) static inline int ip_dont_fragment(struct sock *sk, struct dst_entry *dst) { - return (inet_sk(sk)->pmtudisc == IP_PMTUDISC_DO || + return inet_sk(sk)->pmtudisc == IP_PMTUDISC_DO || (inet_sk(sk)->pmtudisc == IP_PMTUDISC_WANT && - !(dst_metric_locked(dst, RTAX_MTU)))); + !(dst_metric_locked(dst, RTAX_MTU))); } extern void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more); diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 1f8412410998..4a3cd2cd2f5e 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -262,7 +262,7 @@ static inline int ipv6_addr_scope(const struct in6_addr *addr) static inline int __ipv6_addr_src_scope(int type) { - return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16)); + return (type == IPV6_ADDR_ANY) ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16); } static inline int ipv6_addr_src_scope(const struct in6_addr *addr) @@ -279,10 +279,10 @@ static inline int ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, const struct in6_addr *a2) { - return (!!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) | - ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) | - ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) | - ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3]))); + return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) | + ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) | + ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) | + ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])); } static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2) @@ -317,10 +317,10 @@ static inline void ipv6_addr_set(struct in6_addr *addr, static inline int ipv6_addr_equal(const struct in6_addr *a1, const struct in6_addr *a2) { - return (((a1->s6_addr32[0] ^ a2->s6_addr32[0]) | - (a1->s6_addr32[1] ^ a2->s6_addr32[1]) | - (a1->s6_addr32[2] ^ a2->s6_addr32[2]) | - (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0); + return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) | + (a1->s6_addr32[1] ^ a2->s6_addr32[1]) | + (a1->s6_addr32[2] ^ a2->s6_addr32[2]) | + (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0; } static inline int __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2, @@ -373,20 +373,20 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a); static inline int ipv6_addr_any(const struct in6_addr *a) { - return ((a->s6_addr32[0] | a->s6_addr32[1] | - a->s6_addr32[2] | a->s6_addr32[3] ) == 0); + return (a->s6_addr32[0] | a->s6_addr32[1] | + a->s6_addr32[2] | a->s6_addr32[3]) == 0; } static inline int ipv6_addr_loopback(const struct in6_addr *a) { - return ((a->s6_addr32[0] | a->s6_addr32[1] | - a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0); + return (a->s6_addr32[0] | a->s6_addr32[1] | + a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0; } static inline int ipv6_addr_v4mapped(const struct in6_addr *a) { - return ((a->s6_addr32[0] | a->s6_addr32[1] | - (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0); + return (a->s6_addr32[0] | a->s6_addr32[1] | + (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0; } /* @@ -395,8 +395,7 @@ static inline int ipv6_addr_v4mapped(const struct in6_addr *a) */ static inline int ipv6_addr_orchid(const struct in6_addr *a) { - return ((a->s6_addr32[0] & htonl(0xfffffff0)) - == htonl(0x20010010)); + return (a->s6_addr32[0] & htonl(0xfffffff0)) == htonl(0x20010010); } static inline void ipv6_addr_set_v4mapped(const __be32 addr, @@ -441,7 +440,7 @@ static inline int __ipv6_addr_diff(const void *token1, const void *token2, int a * if returned value is greater than prefix length. * --ANK (980803) */ - return (addrlen << 5); + return addrlen << 5; } static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2) diff --git a/include/net/irda/irlap.h b/include/net/irda/irlap.h index 9d0c78ea92f5..17fcd964f9d9 100644 --- a/include/net/irda/irlap.h +++ b/include/net/irda/irlap.h @@ -282,7 +282,7 @@ static inline int irlap_is_primary(struct irlap_cb *self) default: ret = -1; } - return(ret); + return ret; } /* Clear a pending IrLAP disconnect. - Jean II */ diff --git a/include/net/irda/irlmp.h b/include/net/irda/irlmp.h index 3ffc1d0f93d6..fff11b7fe8a4 100644 --- a/include/net/irda/irlmp.h +++ b/include/net/irda/irlmp.h @@ -274,7 +274,7 @@ static inline int irlmp_lap_tx_queue_full(struct lsap_cb *self) if (self->lap->irlap == NULL) return 0; - return(IRLAP_GET_TX_QUEUE_LEN(self->lap->irlap) >= LAP_HIGH_THRESHOLD); + return IRLAP_GET_TX_QUEUE_LEN(self->lap->irlap) >= LAP_HIGH_THRESHOLD; } /* After doing a irlmp_dup(), this get one of the two socket back into diff --git a/include/net/irda/irttp.h b/include/net/irda/irttp.h index 11aee7a2972a..af4b87721d13 100644 --- a/include/net/irda/irttp.h +++ b/include/net/irda/irttp.h @@ -204,7 +204,7 @@ static inline int irttp_is_primary(struct tsap_cb *self) (self->lsap->lap == NULL) || (self->lsap->lap->irlap == NULL)) return -2; - return(irlap_is_primary(self->lsap->lap->irlap)); + return irlap_is_primary(self->lsap->lap->irlap); } #endif /* IRTTP_H */ diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 3c8728aaab4e..eda8808fdacd 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -601,7 +601,7 @@ static inline u32 qdisc_l2t(struct qdisc_rate_table* rtab, unsigned int pktlen) slot = 0; slot >>= rtab->rate.cell_log; if (slot > 255) - return (rtab->data[255]*(slot >> 8) + rtab->data[slot & 0xFF]); + return rtab->data[255]*(slot >> 8) + rtab->data[slot & 0xFF]; return rtab->data[slot]; } diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index 2cb3980b1616..505845ddb0be 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -405,7 +405,7 @@ static inline void sctp_v6_del_protocol(void) { return; } /* Map an association to an assoc_id. */ static inline sctp_assoc_t sctp_assoc2id(const struct sctp_association *asoc) { - return (asoc?asoc->assoc_id:0); + return asoc ? asoc->assoc_id : 0; } /* Look up the association by its id. */ @@ -473,7 +473,7 @@ static inline void sctp_skb_set_owner_r(struct sk_buff *skb, struct sock *sk) /* Tests if the list has one and only one entry. */ static inline int sctp_list_single_entry(struct list_head *head) { - return ((head->next != head) && (head->next == head->prev)); + return (head->next != head) && (head->next == head->prev); } /* Generate a random jitter in the range of -50% ~ +50% of input RTO. */ @@ -631,13 +631,13 @@ static inline int sctp_sanity_check(void) /* This is the hash function for the SCTP port hash table. */ static inline int sctp_phashfn(__u16 lport) { - return (lport & (sctp_port_hashsize - 1)); + return lport & (sctp_port_hashsize - 1); } /* This is the hash function for the endpoint hash table. */ static inline int sctp_ep_hashfn(__u16 lport) { - return (lport & (sctp_ep_hashsize - 1)); + return lport & (sctp_ep_hashsize - 1); } /* This is the hash function for the association hash table. */ @@ -645,7 +645,7 @@ static inline int sctp_assoc_hashfn(__u16 lport, __u16 rport) { int h = (lport << 16) + rport; h ^= h>>8; - return (h & (sctp_assoc_hashsize - 1)); + return h & (sctp_assoc_hashsize - 1); } /* This is the hash function for the association hash table. This is @@ -656,7 +656,7 @@ static inline int sctp_vtag_hashfn(__u16 lport, __u16 rport, __u32 vtag) { int h = (lport << 16) + rport; h ^= vtag; - return (h & (sctp_assoc_hashsize-1)); + return h & (sctp_assoc_hashsize - 1); } #define sctp_for_each_hentry(epb, node, head) \ diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h index 4088c89a9055..9352d12f02de 100644 --- a/include/net/sctp/sm.h +++ b/include/net/sctp/sm.h @@ -345,12 +345,12 @@ enum { static inline int TSN_lt(__u32 s, __u32 t) { - return (((s) - (t)) & TSN_SIGN_BIT); + return ((s) - (t)) & TSN_SIGN_BIT; } static inline int TSN_lte(__u32 s, __u32 t) { - return (((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT)); + return ((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT); } /* Compare two SSNs */ @@ -369,12 +369,12 @@ enum { static inline int SSN_lt(__u16 s, __u16 t) { - return (((s) - (t)) & SSN_SIGN_BIT); + return ((s) - (t)) & SSN_SIGN_BIT; } static inline int SSN_lte(__u16 s, __u16 t) { - return (((s) == (t)) || (((s) - (t)) & SSN_SIGN_BIT)); + return ((s) == (t)) || (((s) - (t)) & SSN_SIGN_BIT); } /* @@ -388,7 +388,7 @@ enum { static inline int ADDIP_SERIAL_gte(__u16 s, __u16 t) { - return (((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT)); + return ((s) == (t)) || (((t) - (s)) & ADDIP_SERIAL_SIGN_BIT); } /* Check VTAG of the packet matches the sender's own tag. */ diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index f9e7473613bd..69fef4fb79c0 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -847,7 +847,7 @@ void sctp_packet_free(struct sctp_packet *); static inline int sctp_packet_empty(struct sctp_packet *packet) { - return (packet->size == packet->overhead); + return packet->size == packet->overhead; } /* This represents a remote transport address. diff --git a/include/net/sctp/tsnmap.h b/include/net/sctp/tsnmap.h index 4aabc5a96cf6..e7728bc14ccf 100644 --- a/include/net/sctp/tsnmap.h +++ b/include/net/sctp/tsnmap.h @@ -157,7 +157,7 @@ __u16 sctp_tsnmap_pending(struct sctp_tsnmap *map); /* Is there a gap in the TSN map? */ static inline int sctp_tsnmap_has_gap(const struct sctp_tsnmap *map) { - return (map->cumulative_tsn_ack_point != map->max_tsn_seen); + return map->cumulative_tsn_ack_point != map->max_tsn_seen; } /* Mark a duplicate TSN. Note: limit the storage of duplicate TSN diff --git a/include/net/tipc/tipc_msg.h b/include/net/tipc/tipc_msg.h index 2e159a812f83..ffe50b4e7b93 100644 --- a/include/net/tipc/tipc_msg.h +++ b/include/net/tipc/tipc_msg.h @@ -107,7 +107,7 @@ static inline u32 msg_hdr_sz(struct tipc_msg *m) static inline int msg_short(struct tipc_msg *m) { - return (msg_hdr_sz(m) == 24); + return msg_hdr_sz(m) == 24; } static inline u32 msg_size(struct tipc_msg *m) @@ -117,7 +117,7 @@ static inline u32 msg_size(struct tipc_msg *m) static inline u32 msg_data_sz(struct tipc_msg *m) { - return (msg_size(m) - msg_hdr_sz(m)); + return msg_size(m) - msg_hdr_sz(m); } static inline unchar *msg_data(struct tipc_msg *m) @@ -132,17 +132,17 @@ static inline u32 msg_type(struct tipc_msg *m) static inline u32 msg_named(struct tipc_msg *m) { - return (msg_type(m) == TIPC_NAMED_MSG); + return msg_type(m) == TIPC_NAMED_MSG; } static inline u32 msg_mcast(struct tipc_msg *m) { - return (msg_type(m) == TIPC_MCAST_MSG); + return msg_type(m) == TIPC_MCAST_MSG; } static inline u32 msg_connected(struct tipc_msg *m) { - return (msg_type(m) == TIPC_CONN_MSG); + return msg_type(m) == TIPC_CONN_MSG; } static inline u32 msg_errcode(struct tipc_msg *m) diff --git a/net/802/fc.c b/net/802/fc.c index 34cf1ee014b8..1e49f2d4ea96 100644 --- a/net/802/fc.c +++ b/net/802/fc.c @@ -70,7 +70,7 @@ static int fc_header(struct sk_buff *skb, struct net_device *dev, if(daddr) { memcpy(fch->daddr,daddr,dev->addr_len); - return(hdr_len); + return hdr_len; } return -hdr_len; } diff --git a/net/802/fddi.c b/net/802/fddi.c index 3ef0ab0a543a..94b3ad08f39a 100644 --- a/net/802/fddi.c +++ b/net/802/fddi.c @@ -82,10 +82,10 @@ static int fddi_header(struct sk_buff *skb, struct net_device *dev, if (daddr != NULL) { memcpy(fddi->daddr, daddr, dev->addr_len); - return(hl); + return hl; } - return(-hl); + return -hl; } @@ -108,7 +108,7 @@ static int fddi_rebuild_header(struct sk_buff *skb) { printk("%s: Don't know how to resolve type %04X addresses.\n", skb->dev->name, ntohs(fddi->hdr.llc_snap.ethertype)); - return(0); + return 0; } } @@ -162,7 +162,7 @@ __be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev) /* Assume 802.2 SNAP frames, for now */ - return(type); + return type; } EXPORT_SYMBOL(fddi_type_trans); @@ -170,9 +170,9 @@ EXPORT_SYMBOL(fddi_type_trans); int fddi_change_mtu(struct net_device *dev, int new_mtu) { if ((new_mtu < FDDI_K_SNAP_HLEN) || (new_mtu > FDDI_K_SNAP_DLEN)) - return(-EINVAL); + return -EINVAL; dev->mtu = new_mtu; - return(0); + return 0; } EXPORT_SYMBOL(fddi_change_mtu); diff --git a/net/802/hippi.c b/net/802/hippi.c index cd3e8e929529..91aca8780fd0 100644 --- a/net/802/hippi.c +++ b/net/802/hippi.c @@ -152,7 +152,7 @@ int hippi_change_mtu(struct net_device *dev, int new_mtu) if ((new_mtu < 68) || (new_mtu > 65280)) return -EINVAL; dev->mtu = new_mtu; - return(0); + return 0; } EXPORT_SYMBOL(hippi_change_mtu); diff --git a/net/802/tr.c b/net/802/tr.c index 1c6e596074df..5e20cf8a074b 100644 --- a/net/802/tr.c +++ b/net/802/tr.c @@ -145,7 +145,7 @@ static int tr_header(struct sk_buff *skb, struct net_device *dev, { memcpy(trh->daddr,daddr,dev->addr_len); tr_source_route(skb, trh, dev); - return(hdr_len); + return hdr_len; } return -hdr_len; diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 889f4ac4459a..0eb486d342dc 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -27,7 +27,7 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp, else if (vlan_id) goto drop; - return (polling ? netif_receive_skb(skb) : netif_rx(skb)); + return polling ? netif_receive_skb(skb) : netif_rx(skb); drop: dev_kfree_skb_any(skb); diff --git a/net/9p/client.c b/net/9p/client.c index dc6f2f26d023..f34b9f510818 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -61,13 +61,13 @@ static const match_table_t tokens = { inline int p9_is_proto_dotl(struct p9_client *clnt) { - return (clnt->proto_version == p9_proto_2000L); + return clnt->proto_version == p9_proto_2000L; } EXPORT_SYMBOL(p9_is_proto_dotl); inline int p9_is_proto_dotu(struct p9_client *clnt) { - return (clnt->proto_version == p9_proto_2000u); + return clnt->proto_version == p9_proto_2000u; } EXPORT_SYMBOL(p9_is_proto_dotu); diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c index 7dca91bb8c57..15ea84ba344e 100644 --- a/net/bluetooth/rfcomm/core.c +++ b/net/bluetooth/rfcomm/core.c @@ -179,13 +179,13 @@ static unsigned char rfcomm_crc_table[256] = { /* FCS on 2 bytes */ static inline u8 __fcs(u8 *data) { - return (0xff - __crc(data)); + return 0xff - __crc(data); } /* FCS on 3 bytes */ static inline u8 __fcs2(u8 *data) { - return (0xff - rfcomm_crc_table[__crc(data) ^ data[2]]); + return 0xff - rfcomm_crc_table[__crc(data) ^ data[2]]; } /* Check FCS */ diff --git a/net/core/flow.c b/net/core/flow.c index b143b86b1f2a..127c8a7ffd61 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -176,8 +176,8 @@ static u32 flow_hash_code(struct flow_cache *fc, { u32 *k = (u32 *) key; - return (jhash2(k, (sizeof(*key) / sizeof(u32)), fcp->hash_rnd) - & (flow_cache_hash_size(fc) - 1)); + return jhash2(k, (sizeof(*key) / sizeof(u32)), fcp->hash_rnd) + & (flow_cache_hash_size(fc) - 1); } typedef unsigned long flow_compare_t; diff --git a/net/core/neighbour.c b/net/core/neighbour.c index a4e0a7482c2b..96b1a749abb4 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -122,7 +122,7 @@ static void neigh_cleanup_and_release(struct neighbour *neigh) unsigned long neigh_rand_reach_time(unsigned long base) { - return (base ? (net_random() % base) + (base >> 1) : 0); + return base ? (net_random() % base) + (base >> 1) : 0; } EXPORT_SYMBOL(neigh_rand_reach_time); @@ -766,9 +766,9 @@ next_elt: static __inline__ int neigh_max_probes(struct neighbour *n) { struct neigh_parms *p = n->parms; - return (n->nud_state & NUD_PROBE ? + return (n->nud_state & NUD_PROBE) ? p->ucast_probes : - p->ucast_probes + p->app_probes + p->mcast_probes); + p->ucast_probes + p->app_probes + p->mcast_probes; } static void neigh_invalidate(struct neighbour *neigh) diff --git a/net/core/utils.c b/net/core/utils.c index ec6bb322f372..5fea0ab21902 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -75,7 +75,7 @@ __be32 in_aton(const char *str) str++; } } - return(htonl(l)); + return htonl(l); } EXPORT_SYMBOL(in_aton); diff --git a/net/dccp/ccids/lib/loss_interval.c b/net/dccp/ccids/lib/loss_interval.c index 8fc3cbf79071..497723c4d4bb 100644 --- a/net/dccp/ccids/lib/loss_interval.c +++ b/net/dccp/ccids/lib/loss_interval.c @@ -116,7 +116,7 @@ u8 tfrc_lh_update_i_mean(struct tfrc_loss_hist *lh, struct sk_buff *skb) cur->li_length = len; tfrc_lh_calc_i_mean(lh); - return (lh->i_mean < old_i_mean); + return lh->i_mean < old_i_mean; } /* Determine if `new_loss' does begin a new loss interval [RFC 4342, 10.2] */ diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c index baa98fb83552..f8c1ae4b41f0 100644 --- a/net/econet/af_econet.c +++ b/net/econet/af_econet.c @@ -392,7 +392,7 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock, dev_queue_xmit(skb); dev_put(dev); mutex_unlock(&econet_mutex); - return(len); + return len; out_free: kfree_skb(skb); @@ -637,7 +637,7 @@ static int econet_create(struct net *net, struct socket *sock, int protocol, eo->num = protocol; econet_insert_socket(&econet_sklist, sk); - return(0); + return 0; out: return err; } diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index 85e7b4551326..f00ef2f1d814 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -387,6 +387,6 @@ ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len) l = _format_mac_addr(buf, PAGE_SIZE, addr, len); l += scnprintf(buf + l, PAGE_SIZE - l, "\n"); - return ((ssize_t) l); + return (ssize_t)l; } EXPORT_SYMBOL(sysfs_format_mac); diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index dcfe7e961c10..4083c186fd30 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -567,7 +567,7 @@ static inline int arp_fwd_proxy(struct in_device *in_dev, if (out_dev) omi = IN_DEV_MEDIUM_ID(out_dev); - return (omi != imi && omi != -1); + return omi != imi && omi != -1; } /* diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c index 721a8a37b45c..174be6caa5c8 100644 --- a/net/ipv4/datagram.c +++ b/net/ipv4/datagram.c @@ -73,6 +73,6 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) inet->inet_id = jiffies; sk_dst_set(sk, &rt->dst); - return(0); + return 0; } EXPORT_SYMBOL(ip4_datagram_connect); diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index e5fa2ddce320..ba8042665849 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -425,7 +425,7 @@ static int inet_diag_bc_run(const void *bc, int len, bc += op->no; } } - return (len == 0); + return len == 0; } static int valid_cc(const void *bc, int len, int cc) diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index f4dc879e258e..168440834ade 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -116,11 +116,11 @@ static int ip4_frag_match(struct inet_frag_queue *q, void *a) struct ip4_create_arg *arg = a; qp = container_of(q, struct ipq, q); - return (qp->id == arg->iph->id && + return qp->id == arg->iph->id && qp->saddr == arg->iph->saddr && qp->daddr == arg->iph->daddr && qp->protocol == arg->iph->protocol && - qp->user == arg->user); + qp->user == arg->user; } /* Memory Tracking Functions. */ diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 714b6a80361d..0967d02fefd8 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -659,7 +659,7 @@ drop: rcu_read_unlock(); drop_nolock: kfree_skb(skb); - return(0); + return 0; } static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index e8f4f9a57f12..8b642f152468 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -72,7 +72,7 @@ static inline int arp_devaddr_compare(const struct arpt_devaddr_info *ap, for (i = 0; i < len; i++) ret |= (hdr_addr[i] ^ ap->addr[i]) & ap->mask[i]; - return (ret != 0); + return ret != 0; } /* diff --git a/net/ipv4/route.c b/net/ipv4/route.c index e24d48dd99d3..ae1d4a41f1c6 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2791,7 +2791,7 @@ static int ipv4_dst_blackhole(struct net *net, struct rtable **rp, struct flowi dst_release(&(*rp)->dst); *rp = rt; - return (rt ? 0 : -ENOMEM); + return rt ? 0 : -ENOMEM; } int ip_route_output_flow(struct net *net, struct rtable **rp, struct flowi *flp, diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 1bc87a05c734..51966b3f9719 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2301,7 +2301,7 @@ static inline int tcp_dupack_heuristics(struct tcp_sock *tp) static inline int tcp_skb_timedout(struct sock *sk, struct sk_buff *skb) { - return (tcp_time_stamp - TCP_SKB_CB(skb)->when > inet_csk(sk)->icsk_rto); + return tcp_time_stamp - TCP_SKB_CB(skb)->when > inet_csk(sk)->icsk_rto; } static inline int tcp_head_timedout(struct sock *sk) @@ -3398,8 +3398,8 @@ static void tcp_ack_probe(struct sock *sk) static inline int tcp_ack_is_dubious(const struct sock *sk, const int flag) { - return (!(flag & FLAG_NOT_DUP) || (flag & FLAG_CA_ALERT) || - inet_csk(sk)->icsk_ca_state != TCP_CA_Open); + return !(flag & FLAG_NOT_DUP) || (flag & FLAG_CA_ALERT) || + inet_csk(sk)->icsk_ca_state != TCP_CA_Open; } static inline int tcp_may_raise_cwnd(const struct sock *sk, const int flag) @@ -3416,9 +3416,9 @@ static inline int tcp_may_update_window(const struct tcp_sock *tp, const u32 ack, const u32 ack_seq, const u32 nwin) { - return (after(ack, tp->snd_una) || + return after(ack, tp->snd_una) || after(ack_seq, tp->snd_wl1) || - (ack_seq == tp->snd_wl1 && nwin > tp->snd_wnd)); + (ack_seq == tp->snd_wl1 && nwin > tp->snd_wnd); } /* Update our send window. diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index f25b56cb85cb..43cf901d7659 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -55,7 +55,7 @@ static __inline__ int tcp_in_window(u32 seq, u32 end_seq, u32 s_win, u32 e_win) return 1; if (after(end_seq, s_win) && before(seq, e_win)) return 1; - return (seq == e_win && seq == end_seq); + return seq == e_win && seq == end_seq; } /* diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index ea09d2fd50c7..05b1ecf36763 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1370,9 +1370,9 @@ static inline int tcp_nagle_check(const struct tcp_sock *tp, const struct sk_buff *skb, unsigned mss_now, int nonagle) { - return (skb->len < mss_now && + return skb->len < mss_now && ((nonagle & TCP_NAGLE_CORK) || - (!nonagle && tp->packets_out && tcp_minshall_check(tp)))); + (!nonagle && tp->packets_out && tcp_minshall_check(tp))); } /* Return non-zero if the Nagle test allows this packet to be @@ -1443,10 +1443,10 @@ int tcp_may_send_now(struct sock *sk) struct tcp_sock *tp = tcp_sk(sk); struct sk_buff *skb = tcp_send_head(sk); - return (skb && + return skb && tcp_snd_test(sk, skb, tcp_current_mss(sk), (tcp_skb_is_last(sk, skb) ? - tp->nonagle : TCP_NAGLE_PUSH))); + tp->nonagle : TCP_NAGLE_PUSH)); } /* Trim TSO SKB to LEN bytes, put the remaining data into a new packet diff --git a/net/ipv4/tcp_westwood.c b/net/ipv4/tcp_westwood.c index 20151d6a6241..a534dda5456e 100644 --- a/net/ipv4/tcp_westwood.c +++ b/net/ipv4/tcp_westwood.c @@ -80,7 +80,7 @@ static void tcp_westwood_init(struct sock *sk) */ static inline u32 westwood_do_filter(u32 a, u32 b) { - return (((7 * a) + b) >> 3); + return ((7 * a) + b) >> 3; } static void westwood_filter(struct westwood *w, u32 delta) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 5bc893e28008..89aa54394a08 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -243,7 +243,7 @@ static inline bool addrconf_qdisc_ok(const struct net_device *dev) /* Check if a route is valid prefix route */ static inline int addrconf_is_prefix_route(const struct rt6_info *rt) { - return ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0); + return (rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0; } static void addrconf_del_timer(struct inet6_ifaddr *ifp) diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c index f0e774cea386..921dcf6c271a 100644 --- a/net/ipv6/addrlabel.c +++ b/net/ipv6/addrlabel.c @@ -513,10 +513,9 @@ static int ip6addrlbl_dump(struct sk_buff *skb, struct netlink_callback *cb) static inline int ip6addrlbl_msgsize(void) { - return (NLMSG_ALIGN(sizeof(struct ifaddrlblmsg)) + return NLMSG_ALIGN(sizeof(struct ifaddrlblmsg)) + nla_total_size(16) /* IFAL_ADDRESS */ - + nla_total_size(4) /* IFAL_LABEL */ - ); + + nla_total_size(4); /* IFAL_LABEL */ } static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh, diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 56b9bf2516f4..60220985bb80 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -467,7 +467,7 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr, if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL) sin->sin6_scope_id = sk->sk_bound_dev_if; *uaddr_len = sizeof(*sin); - return(0); + return 0; } EXPORT_SYMBOL(inet6_getname); @@ -488,7 +488,7 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) case SIOCADDRT: case SIOCDELRT: - return(ipv6_route_ioctl(net, cmd, (void __user *)arg)); + return ipv6_route_ioctl(net, cmd, (void __user *)arg); case SIOCSIFADDR: return addrconf_add_ifaddr(net, (void __user *) arg); @@ -502,7 +502,7 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) return sk->sk_prot->ioctl(sk, cmd, arg); } /*NOTREACHED*/ - return(0); + return 0; } EXPORT_SYMBOL(inet6_ioctl); diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c index e1caa5d526c2..14ed0a955b56 100644 --- a/net/ipv6/exthdrs_core.c +++ b/net/ipv6/exthdrs_core.c @@ -13,12 +13,12 @@ int ipv6_ext_hdr(u8 nexthdr) /* * find out if nexthdr is an extension header or a protocol */ - return ( (nexthdr == NEXTHDR_HOP) || + return (nexthdr == NEXTHDR_HOP) || (nexthdr == NEXTHDR_ROUTING) || (nexthdr == NEXTHDR_FRAGMENT) || (nexthdr == NEXTHDR_AUTH) || (nexthdr == NEXTHDR_NONE) || - (nexthdr == NEXTHDR_DEST) ); + (nexthdr == NEXTHDR_DEST); } /* diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 1838927a2243..efbbbce68f9e 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -870,8 +870,8 @@ static inline int ip6_rt_check(struct rt6key *rt_key, struct in6_addr *fl_addr, struct in6_addr *addr_cache) { - return ((rt_key->plen != 128 || !ipv6_addr_equal(fl_addr, &rt_key->addr)) && - (addr_cache == NULL || !ipv6_addr_equal(fl_addr, addr_cache))); + return (rt_key->plen != 128 || !ipv6_addr_equal(fl_addr, &rt_key->addr)) && + (addr_cache == NULL || !ipv6_addr_equal(fl_addr, addr_cache)); } static struct dst_entry *ip6_sk_dst_check(struct sock *sk, diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 69a0051cea67..b3dd844cd34f 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -228,12 +228,12 @@ static struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur, do { cur = ((void *)cur) + (cur->nd_opt_len << 3); } while(cur < end && cur->nd_opt_type != type); - return (cur <= end && cur->nd_opt_type == type ? cur : NULL); + return cur <= end && cur->nd_opt_type == type ? cur : NULL; } static inline int ndisc_is_useropt(struct nd_opt_hdr *opt) { - return (opt->nd_opt_type == ND_OPT_RDNSS); + return opt->nd_opt_type == ND_OPT_RDNSS; } static struct nd_opt_hdr *ndisc_next_useropt(struct nd_opt_hdr *cur, @@ -244,7 +244,7 @@ static struct nd_opt_hdr *ndisc_next_useropt(struct nd_opt_hdr *cur, do { cur = ((void *)cur) + (cur->nd_opt_len << 3); } while(cur < end && !ndisc_is_useropt(cur)); - return (cur <= end && ndisc_is_useropt(cur) ? cur : NULL); + return cur <= end && ndisc_is_useropt(cur) ? cur : NULL; } static struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len, @@ -319,7 +319,7 @@ static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p, int prepad = ndisc_addr_option_pad(dev->type); if (lladdrlen != NDISC_OPT_SPACE(dev->addr_len + prepad)) return NULL; - return (lladdr + prepad); + return lladdr + prepad; } int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir) diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 8e754be92c24..6b331e9b5706 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -82,13 +82,13 @@ EXPORT_SYMBOL_GPL(ip6t_alloc_initial_table); int ip6t_ext_hdr(u8 nexthdr) { - return ( (nexthdr == IPPROTO_HOPOPTS) || - (nexthdr == IPPROTO_ROUTING) || - (nexthdr == IPPROTO_FRAGMENT) || - (nexthdr == IPPROTO_ESP) || - (nexthdr == IPPROTO_AH) || - (nexthdr == IPPROTO_NONE) || - (nexthdr == IPPROTO_DSTOPTS) ); + return (nexthdr == IPPROTO_HOPOPTS) || + (nexthdr == IPPROTO_ROUTING) || + (nexthdr == IPPROTO_FRAGMENT) || + (nexthdr == IPPROTO_ESP) || + (nexthdr == IPPROTO_AH) || + (nexthdr == IPPROTO_NONE) || + (nexthdr == IPPROTO_DSTOPTS); } /* Returns whether matches rule or not. */ diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index e677937a07fc..45e6efb7f171 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -764,7 +764,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, return -EINVAL; if (sin6->sin6_family && sin6->sin6_family != AF_INET6) - return(-EAFNOSUPPORT); + return -EAFNOSUPPORT; /* port is the proto value [0..255] carried in nexthdr */ proto = ntohs(sin6->sin6_port); @@ -772,10 +772,10 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, if (!proto) proto = inet->inet_num; else if (proto != inet->inet_num) - return(-EINVAL); + return -EINVAL; if (proto > 255) - return(-EINVAL); + return -EINVAL; daddr = &sin6->sin6_addr; if (np->sndflow) { @@ -985,7 +985,7 @@ static int do_rawv6_setsockopt(struct sock *sk, int level, int optname, /* You may get strange result with a positive odd offset; RFC2292bis agrees with me. */ if (val > 0 && (val&1)) - return(-EINVAL); + return -EINVAL; if (val < 0) { rp->checksum = 0; } else { @@ -997,7 +997,7 @@ static int do_rawv6_setsockopt(struct sock *sk, int level, int optname, break; default: - return(-ENOPROTOOPT); + return -ENOPROTOOPT; } } @@ -1190,7 +1190,7 @@ static int rawv6_init_sk(struct sock *sk) default: break; } - return(0); + return 0; } struct proto rawv6_prot = { diff --git a/net/ipv6/route.c b/net/ipv6/route.c index d126365ac046..25b0beda4331 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -217,14 +217,14 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev, static __inline__ int rt6_check_expired(const struct rt6_info *rt) { - return (rt->rt6i_flags & RTF_EXPIRES && - time_after(jiffies, rt->rt6i_expires)); + return (rt->rt6i_flags & RTF_EXPIRES) && + time_after(jiffies, rt->rt6i_expires); } static inline int rt6_need_strict(struct in6_addr *daddr) { - return (ipv6_addr_type(daddr) & - (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK)); + return ipv6_addr_type(daddr) & + (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK); } /* @@ -440,7 +440,7 @@ static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict) __func__, match); net = dev_net(rt0->rt6i_dev); - return (match ? match : net->ipv6.ip6_null_entry); + return match ? match : net->ipv6.ip6_null_entry; } #ifdef CONFIG_IPV6_ROUTE_INFO @@ -859,7 +859,7 @@ int ip6_dst_blackhole(struct sock *sk, struct dst_entry **dstp, struct flowi *fl dst_release(*dstp); *dstp = new; - return (new ? 0 : -ENOMEM); + return new ? 0 : -ENOMEM; } EXPORT_SYMBOL_GPL(ip6_dst_blackhole); @@ -1070,7 +1070,7 @@ static int ip6_dst_gc(struct dst_ops *ops) net->ipv6.ip6_rt_gc_expire = rt_gc_timeout>>1; out: net->ipv6.ip6_rt_gc_expire -= net->ipv6.ip6_rt_gc_expire>>rt_elasticity; - return (atomic_read(&ops->entries) > rt_max_size); + return atomic_read(&ops->entries) > rt_max_size; } /* Clean host part of a prefix. Not necessary in radix tree, diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index fe6d40418c0b..8d93f6d81979 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -139,7 +139,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, return -EINVAL; if (usin->sin6_family != AF_INET6) - return(-EAFNOSUPPORT); + return -EAFNOSUPPORT; memset(&fl, 0, sizeof(fl)); diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index 6baeabbbca82..39676eac3a37 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -199,7 +199,7 @@ static inline int xfrm6_garbage_collect(struct dst_ops *ops) struct net *net = container_of(ops, struct net, xfrm.xfrm6_dst_ops); xfrm6_policy_afinfo.garbage_collect(net); - return (atomic_read(&ops->entries) > ops->gc_thresh * 2); + return atomic_read(&ops->entries) > ops->gc_thresh * 2; } static void xfrm6_update_pmtu(struct dst_entry *dst, u32 mtu) diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c index fd55b5135de5..bf3635129b17 100644 --- a/net/irda/af_irda.c +++ b/net/irda/af_irda.c @@ -573,9 +573,9 @@ static int irda_find_lsap_sel(struct irda_sock *self, char *name) /* Requested object/attribute doesn't exist */ if((self->errno == IAS_CLASS_UNKNOWN) || (self->errno == IAS_ATTRIB_UNKNOWN)) - return (-EADDRNOTAVAIL); + return -EADDRNOTAVAIL; else - return (-EHOSTUNREACH); + return -EHOSTUNREACH; } /* Get the remote TSAP selector */ @@ -663,7 +663,7 @@ static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name) __func__, name); self->daddr = DEV_ADDR_ANY; kfree(discoveries); - return(-ENOTUNIQ); + return -ENOTUNIQ; } /* First time we found that one, save it ! */ daddr = self->daddr; @@ -677,7 +677,7 @@ static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name) IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__); self->daddr = DEV_ADDR_ANY; kfree(discoveries); - return(-EHOSTUNREACH); + return -EHOSTUNREACH; break; } } @@ -689,7 +689,7 @@ static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name) IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n", __func__, name); self->daddr = DEV_ADDR_ANY; - return(-EADDRNOTAVAIL); + return -EADDRNOTAVAIL; } /* Revert back to discovered device & service */ @@ -2465,9 +2465,9 @@ bed: /* Requested object/attribute doesn't exist */ if((self->errno == IAS_CLASS_UNKNOWN) || (self->errno == IAS_ATTRIB_UNKNOWN)) - return (-EADDRNOTAVAIL); + return -EADDRNOTAVAIL; else - return (-EHOSTUNREACH); + return -EHOSTUNREACH; } /* Translate from internal to user structure */ diff --git a/net/irda/discovery.c b/net/irda/discovery.c index c1c8ae939126..36c3f037f172 100644 --- a/net/irda/discovery.c +++ b/net/irda/discovery.c @@ -315,7 +315,7 @@ struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn, /* Get the actual number of device in the buffer and return */ *pn = i; - return(buffer); + return buffer; } #ifdef CONFIG_PROC_FS diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index faa82ca2dfdc..a39cca8331df 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -449,8 +449,8 @@ static int ircomm_tty_open(struct tty_struct *tty, struct file *filp) } #ifdef SERIAL_DO_RESTART - return ((self->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); + return (self->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS; #else return -EAGAIN; #endif diff --git a/net/irda/irlmp.c b/net/irda/irlmp.c index 0e7d8bde145d..6115a44c0a24 100644 --- a/net/irda/irlmp.c +++ b/net/irda/irlmp.c @@ -939,7 +939,7 @@ struct irda_device_info *irlmp_get_discoveries(int *pn, __u16 mask, int nslots) } /* Return current cached discovery log */ - return(irlmp_copy_discoveries(irlmp->cachelog, pn, mask, TRUE)); + return irlmp_copy_discoveries(irlmp->cachelog, pn, mask, TRUE); } EXPORT_SYMBOL(irlmp_get_discoveries); diff --git a/net/irda/irlmp_frame.c b/net/irda/irlmp_frame.c index 3750884094da..062e63b1c5c4 100644 --- a/net/irda/irlmp_frame.c +++ b/net/irda/irlmp_frame.c @@ -448,7 +448,7 @@ static struct lsap_cb *irlmp_find_lsap(struct lap_cb *self, __u8 dlsap_sel, (self->cache.slsap_sel == slsap_sel) && (self->cache.dlsap_sel == dlsap_sel)) { - return (self->cache.lsap); + return self->cache.lsap; } #endif diff --git a/net/irda/irnet/irnet_irda.c b/net/irda/irnet/irnet_irda.c index e98e40d76f4f..7f17a8020e8a 100644 --- a/net/irda/irnet/irnet_irda.c +++ b/net/irda/irnet/irnet_irda.c @@ -238,7 +238,7 @@ irnet_ias_to_tsap(irnet_socket * self, DEXIT(IRDA_SR_TRACE, "\n"); /* Return the TSAP */ - return(dtsap_sel); + return dtsap_sel; } /*------------------------------------------------------------------*/ @@ -301,7 +301,7 @@ irnet_connect_tsap(irnet_socket * self) { clear_bit(0, &self->ttp_connect); DERROR(IRDA_SR_ERROR, "connect aborted!\n"); - return(err); + return err; } /* Connect to remote device */ @@ -312,7 +312,7 @@ irnet_connect_tsap(irnet_socket * self) { clear_bit(0, &self->ttp_connect); DERROR(IRDA_SR_ERROR, "connect aborted!\n"); - return(err); + return err; } /* The above call is non-blocking. @@ -321,7 +321,7 @@ irnet_connect_tsap(irnet_socket * self) * See you there ;-) */ DEXIT(IRDA_SR_TRACE, "\n"); - return(err); + return err; } /*------------------------------------------------------------------*/ @@ -362,10 +362,10 @@ irnet_discover_next_daddr(irnet_socket * self) /* The above request is non-blocking. * After a while, IrDA will call us back in irnet_discovervalue_confirm() * We will then call irnet_ias_to_tsap() and come back here again... */ - return(0); + return 0; } else - return(1); + return 1; } /*------------------------------------------------------------------*/ @@ -436,7 +436,7 @@ irnet_discover_daddr_and_lsap_sel(irnet_socket * self) /* Follow me in irnet_discovervalue_confirm() */ DEXIT(IRDA_SR_TRACE, "\n"); - return(0); + return 0; } /*------------------------------------------------------------------*/ @@ -485,7 +485,7 @@ irnet_dname_to_daddr(irnet_socket * self) /* No luck ! */ DEBUG(IRDA_SR_INFO, "cannot discover device ``%s'' !!!\n", self->rname); kfree(discoveries); - return(-EADDRNOTAVAIL); + return -EADDRNOTAVAIL; } @@ -527,7 +527,7 @@ irda_irnet_create(irnet_socket * self) INIT_WORK(&self->disconnect_work, irnet_ppp_disconnect); DEXIT(IRDA_SOCK_TRACE, "\n"); - return(0); + return 0; } /*------------------------------------------------------------------*/ @@ -601,7 +601,7 @@ irda_irnet_connect(irnet_socket * self) * We will finish the connection procedure in irnet_connect_tsap(). */ DEXIT(IRDA_SOCK_TRACE, "\n"); - return(0); + return 0; } /*------------------------------------------------------------------*/ @@ -733,7 +733,7 @@ irnet_daddr_to_dname(irnet_socket * self) /* No luck ! */ DEXIT(IRDA_SERV_INFO, ": cannot discover device 0x%08x !!!\n", self->daddr); kfree(discoveries); - return(-EADDRNOTAVAIL); + return -EADDRNOTAVAIL; } /*------------------------------------------------------------------*/ diff --git a/net/irda/irnet/irnet_ppp.c b/net/irda/irnet/irnet_ppp.c index dfe7b38dd4af..69f1fa64994e 100644 --- a/net/irda/irnet/irnet_ppp.c +++ b/net/irda/irnet/irnet_ppp.c @@ -166,7 +166,7 @@ irnet_ctrl_write(irnet_socket * ap, } /* Success : we have parsed all commands successfully */ - return(count); + return count; } #ifdef INITIAL_DISCOVERY @@ -300,7 +300,7 @@ irnet_ctrl_read(irnet_socket * ap, } DEXIT(CTRL_TRACE, "\n"); - return(strlen(event)); + return strlen(event); } #endif /* INITIAL_DISCOVERY */ @@ -409,7 +409,7 @@ irnet_ctrl_read(irnet_socket * ap, } DEXIT(CTRL_TRACE, "\n"); - return(strlen(event)); + return strlen(event); } /*------------------------------------------------------------------*/ @@ -623,7 +623,7 @@ dev_irnet_poll(struct file * file, mask |= irnet_ctrl_poll(ap, file, wait); DEXIT(FS_TRACE, " - mask=0x%X\n", mask); - return(mask); + return mask; } /*------------------------------------------------------------------*/ diff --git a/net/key/af_key.c b/net/key/af_key.c index 43040e97c474..d87c22df6f1e 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -565,12 +565,12 @@ pfkey_proto2satype(uint16_t proto) static uint8_t pfkey_proto_to_xfrm(uint8_t proto) { - return (proto == IPSEC_PROTO_ANY ? 0 : proto); + return proto == IPSEC_PROTO_ANY ? 0 : proto; } static uint8_t pfkey_proto_from_xfrm(uint8_t proto) { - return (proto ? proto : IPSEC_PROTO_ANY); + return proto ? proto : IPSEC_PROTO_ANY; } static inline int pfkey_sockaddr_len(sa_family_t family) diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c index 4f772de2f213..b0cc385bf989 100644 --- a/net/mac80211/rate.c +++ b/net/mac80211/rate.c @@ -207,7 +207,7 @@ static bool rc_no_data_or_no_ack(struct ieee80211_tx_rate_control *txrc) fc = hdr->frame_control; - return ((info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc)); + return (info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc); } static void rc_send_low_broadcast(s8 *idx, u32 basic_rates, u8 max_rate_idx) diff --git a/net/rfkill/input.c b/net/rfkill/input.c index 3713d7ecab96..1bca6d49ec96 100644 --- a/net/rfkill/input.c +++ b/net/rfkill/input.c @@ -142,7 +142,7 @@ static unsigned long rfkill_last_scheduled; static unsigned long rfkill_ratelimit(const unsigned long last) { const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY); - return (time_after(jiffies, last + delay)) ? 0 : delay; + return time_after(jiffies, last + delay) ? 0 : delay; } static void rfkill_schedule_ratelimited(void) diff --git a/net/rose/rose_link.c b/net/rose/rose_link.c index a750a28e0221..fa5f5641a2c2 100644 --- a/net/rose/rose_link.c +++ b/net/rose/rose_link.c @@ -114,7 +114,7 @@ static int rose_send_frame(struct sk_buff *skb, struct rose_neigh *neigh) if (ax25s) ax25_cb_put(ax25s); - return (neigh->ax25 != NULL); + return neigh->ax25 != NULL; } /* @@ -137,7 +137,7 @@ static int rose_link_up(struct rose_neigh *neigh) if (ax25s) ax25_cb_put(ax25s); - return (neigh->ax25 != NULL); + return neigh->ax25 != NULL; } /* diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index f774e657641a..1ef29c74d85e 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -799,7 +799,7 @@ static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *len) static int sctp_inet_af_supported(sa_family_t family, struct sctp_sock *sp) { /* PF_INET only supports AF_INET addresses. */ - return (AF_INET == family); + return AF_INET == family; } /* Address matching with wildcards allowed. */ diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 6a691d84aef4..535659fdbaa1 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3884,7 +3884,7 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len, } out: - return (retval); + return retval; } @@ -3940,7 +3940,7 @@ static int sctp_getsockopt_peer_addr_info(struct sock *sk, int len, } out: - return (retval); + return retval; } /* 7.1.12 Enable/Disable message fragmentation (SCTP_DISABLE_FRAGMENTS) @@ -5594,7 +5594,7 @@ static int sctp_get_port(struct sock *sk, unsigned short snum) /* Note: sk->sk_num gets filled in if ephemeral port request. */ ret = sctp_get_port_local(sk, &addr); - return (ret ? 1 : 0); + return ret ? 1 : 0; } /* diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index dcfc66bab2bb..597c493392ad 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1049,7 +1049,7 @@ gss_match(struct auth_cred *acred, struct rpc_cred *rc, int flags) out: if (acred->machine_cred != gss_cred->gc_machine_cred) return 0; - return (rc->cr_uid == acred->uid); + return rc->cr_uid == acred->uid; } /* diff --git a/net/sunrpc/auth_gss/gss_generic_token.c b/net/sunrpc/auth_gss/gss_generic_token.c index 310b78e99456..c586e92bcf76 100644 --- a/net/sunrpc/auth_gss/gss_generic_token.c +++ b/net/sunrpc/auth_gss/gss_generic_token.c @@ -76,19 +76,19 @@ static int der_length_size( int length) { if (length < (1<<7)) - return(1); + return 1; else if (length < (1<<8)) - return(2); + return 2; #if (SIZEOF_INT == 2) else - return(3); + return 3; #else else if (length < (1<<16)) - return(3); + return 3; else if (length < (1<<24)) - return(4); + return 4; else - return(5); + return 5; #endif } @@ -121,14 +121,14 @@ der_read_length(unsigned char **buf, int *bufsize) int ret; if (*bufsize < 1) - return(-1); + return -1; sf = *(*buf)++; (*bufsize)--; if (sf & 0x80) { if ((sf &= 0x7f) > ((*bufsize)-1)) - return(-1); + return -1; if (sf > SIZEOF_INT) - return (-1); + return -1; ret = 0; for (; sf; sf--) { ret = (ret<<8) + (*(*buf)++); @@ -138,7 +138,7 @@ der_read_length(unsigned char **buf, int *bufsize) ret = sf; } - return(ret); + return ret; } /* returns the length of a token, given the mech oid and the body size */ @@ -148,7 +148,7 @@ g_token_size(struct xdr_netobj *mech, unsigned int body_size) { /* set body_size to sequence contents size */ body_size += 2 + (int) mech->len; /* NEED overflow check */ - return(1 + der_length_size(body_size) + body_size); + return 1 + der_length_size(body_size) + body_size; } EXPORT_SYMBOL_GPL(g_token_size); @@ -186,27 +186,27 @@ g_verify_token_header(struct xdr_netobj *mech, int *body_size, int ret = 0; if ((toksize-=1) < 0) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if (*buf++ != 0x60) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if ((seqsize = der_read_length(&buf, &toksize)) < 0) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if (seqsize != toksize) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if ((toksize-=1) < 0) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if (*buf++ != 0x06) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if ((toksize-=1) < 0) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; toid.len = *buf++; if ((toksize-=toid.len) < 0) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; toid.data = buf; buf+=toid.len; @@ -217,17 +217,17 @@ g_verify_token_header(struct xdr_netobj *mech, int *body_size, to return G_BAD_TOK_HEADER if the token header is in fact bad */ if ((toksize-=2) < 0) - return(G_BAD_TOK_HEADER); + return G_BAD_TOK_HEADER; if (ret) - return(ret); + return ret; if (!ret) { *buf_in = buf; *body_size = toksize; } - return(ret); + return ret; } EXPORT_SYMBOL_GPL(g_verify_token_header); diff --git a/net/sunrpc/auth_gss/gss_krb5_seqnum.c b/net/sunrpc/auth_gss/gss_krb5_seqnum.c index 415c013ba382..62ac90c62cb1 100644 --- a/net/sunrpc/auth_gss/gss_krb5_seqnum.c +++ b/net/sunrpc/auth_gss/gss_krb5_seqnum.c @@ -162,5 +162,5 @@ krb5_get_seq_num(struct krb5_ctx *kctx, *seqnum = ((plain[0]) | (plain[1] << 8) | (plain[2] << 16) | (plain[3] << 24)); - return (0); + return 0; } diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c index 2689de39dc78..8b4061049d76 100644 --- a/net/sunrpc/auth_gss/gss_mech_switch.c +++ b/net/sunrpc/auth_gss/gss_mech_switch.c @@ -331,7 +331,7 @@ gss_delete_sec_context(struct gss_ctx **context_handle) *context_handle); if (!*context_handle) - return(GSS_S_NO_CONTEXT); + return GSS_S_NO_CONTEXT; if ((*context_handle)->internal_ctx_id) (*context_handle)->mech_type->gm_ops ->gss_delete_sec_context((*context_handle) diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index cace6049e4a5..aa5dbda6608c 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -376,7 +376,7 @@ int rpc_queue_empty(struct rpc_wait_queue *queue) spin_lock_bh(&queue->lock); res = queue->qlen; spin_unlock_bh(&queue->lock); - return (res == 0); + return res == 0; } EXPORT_SYMBOL_GPL(rpc_queue_empty); diff --git a/net/tipc/addr.c b/net/tipc/addr.c index c048543ffbeb..2ddc351b3be9 100644 --- a/net/tipc/addr.c +++ b/net/tipc/addr.c @@ -89,7 +89,7 @@ int tipc_addr_domain_valid(u32 addr) int tipc_addr_node_valid(u32 addr) { - return (tipc_addr_domain_valid(addr) && tipc_node(addr)); + return tipc_addr_domain_valid(addr) && tipc_node(addr); } int tipc_in_scope(u32 domain, u32 addr) diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index b11248c2d788..ecfaac10d0b4 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -184,7 +184,7 @@ static void bclink_set_gap(struct tipc_node *n_ptr) static int bclink_ack_allowed(u32 n) { - return((n % TIPC_MIN_LINK_WIN) == tipc_own_tag); + return (n % TIPC_MIN_LINK_WIN) == tipc_own_tag; } diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c index 52ae17b2583e..9c10c6b7c12b 100644 --- a/net/tipc/bearer.c +++ b/net/tipc/bearer.c @@ -63,7 +63,7 @@ static int media_name_valid(const char *name) len = strlen(name); if ((len + 1) > TIPC_MAX_MEDIA_NAME) return 0; - return (strspn(name, tipc_alphabet) == len); + return strspn(name, tipc_alphabet) == len; } /** diff --git a/net/tipc/dbg.c b/net/tipc/dbg.c index 1885a7edb0c8..6569d45bfb9a 100644 --- a/net/tipc/dbg.c +++ b/net/tipc/dbg.c @@ -134,7 +134,7 @@ void tipc_printbuf_reset(struct print_buf *pb) int tipc_printbuf_empty(struct print_buf *pb) { - return (!pb->buf || (pb->crs == pb->buf)); + return !pb->buf || (pb->crs == pb->buf); } /** @@ -169,7 +169,7 @@ int tipc_printbuf_validate(struct print_buf *pb) tipc_printf(pb, err); } } - return (pb->crs - pb->buf + 1); + return pb->crs - pb->buf + 1; } /** diff --git a/net/tipc/link.c b/net/tipc/link.c index a6a3102bb4d6..b8cf1e9d0b86 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -239,13 +239,13 @@ int tipc_link_is_up(struct link *l_ptr) { if (!l_ptr) return 0; - return (link_working_working(l_ptr) || link_working_unknown(l_ptr)); + return link_working_working(l_ptr) || link_working_unknown(l_ptr); } int tipc_link_is_active(struct link *l_ptr) { - return ((l_ptr->owner->active_links[0] == l_ptr) || - (l_ptr->owner->active_links[1] == l_ptr)); + return (l_ptr->owner->active_links[0] == l_ptr) || + (l_ptr->owner->active_links[1] == l_ptr); } /** diff --git a/net/tipc/link.h b/net/tipc/link.h index 2e5385c47d30..26151d30589d 100644 --- a/net/tipc/link.h +++ b/net/tipc/link.h @@ -279,12 +279,12 @@ static inline int between(u32 lower, u32 upper, u32 n) static inline int less_eq(u32 left, u32 right) { - return (mod(right - left) < 32768u); + return mod(right - left) < 32768u; } static inline int less(u32 left, u32 right) { - return (less_eq(left, right) && (mod(right) != mod(left))); + return less_eq(left, right) && (mod(right) != mod(left)); } static inline u32 lesser(u32 left, u32 right) @@ -299,32 +299,32 @@ static inline u32 lesser(u32 left, u32 right) static inline int link_working_working(struct link *l_ptr) { - return (l_ptr->state == WORKING_WORKING); + return l_ptr->state == WORKING_WORKING; } static inline int link_working_unknown(struct link *l_ptr) { - return (l_ptr->state == WORKING_UNKNOWN); + return l_ptr->state == WORKING_UNKNOWN; } static inline int link_reset_unknown(struct link *l_ptr) { - return (l_ptr->state == RESET_UNKNOWN); + return l_ptr->state == RESET_UNKNOWN; } static inline int link_reset_reset(struct link *l_ptr) { - return (l_ptr->state == RESET_RESET); + return l_ptr->state == RESET_RESET; } static inline int link_blocked(struct link *l_ptr) { - return (l_ptr->exp_msg_count || l_ptr->blocked); + return l_ptr->exp_msg_count || l_ptr->blocked; } static inline int link_congested(struct link *l_ptr) { - return (l_ptr->out_queue_size >= l_ptr->queue_limit[0]); + return l_ptr->out_queue_size >= l_ptr->queue_limit[0]; } #endif diff --git a/net/tipc/msg.h b/net/tipc/msg.h index 995d2da35b01..031aad18efce 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -104,7 +104,7 @@ static inline u32 msg_user(struct tipc_msg *m) static inline u32 msg_isdata(struct tipc_msg *m) { - return (msg_user(m) <= TIPC_CRITICAL_IMPORTANCE); + return msg_user(m) <= TIPC_CRITICAL_IMPORTANCE; } static inline void msg_set_user(struct tipc_msg *m, u32 n) @@ -289,7 +289,7 @@ static inline void msg_set_destnode(struct tipc_msg *m, u32 a) static inline int msg_is_dest(struct tipc_msg *m, u32 d) { - return(msg_short(m) || (msg_destnode(m) == d)); + return msg_short(m) || (msg_destnode(m) == d); } static inline u32 msg_routed(struct tipc_msg *m) @@ -632,7 +632,7 @@ static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) static inline u32 msg_max_pkt(struct tipc_msg *m) { - return (msg_bits(m, 9, 16, 0xffff) * 4); + return msg_bits(m, 9, 16, 0xffff) * 4; } static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index c13c2c7c4b57..9ca4b0689237 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -116,7 +116,7 @@ DEFINE_RWLOCK(tipc_nametbl_lock); static int hash(int x) { - return(x & (tipc_nametbl_size - 1)); + return x & (tipc_nametbl_size - 1); } /** diff --git a/net/tipc/node.c b/net/tipc/node.c index b702c7bf580f..7c49cd056df7 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -242,17 +242,17 @@ int tipc_node_has_active_links(struct tipc_node *n_ptr) int tipc_node_has_redundant_links(struct tipc_node *n_ptr) { - return (n_ptr->working_links > 1); + return n_ptr->working_links > 1; } static int tipc_node_has_active_routes(struct tipc_node *n_ptr) { - return (n_ptr && (n_ptr->last_router >= 0)); + return n_ptr && (n_ptr->last_router >= 0); } int tipc_node_is_up(struct tipc_node *n_ptr) { - return (tipc_node_has_active_links(n_ptr) || tipc_node_has_active_routes(n_ptr)); + return tipc_node_has_active_links(n_ptr) || tipc_node_has_active_routes(n_ptr); } struct tipc_node *tipc_node_attach_link(struct link *l_ptr) diff --git a/net/tipc/port.h b/net/tipc/port.h index 8d1652aab298..e74bd9563739 100644 --- a/net/tipc/port.h +++ b/net/tipc/port.h @@ -157,7 +157,7 @@ static inline u32 tipc_peer_node(struct port *p_ptr) static inline int tipc_port_congested(struct port *p_ptr) { - return((p_ptr->sent - p_ptr->acked) >= (TIPC_FLOW_CONTROL_WIN * 2)); + return (p_ptr->sent - p_ptr->acked) >= (TIPC_FLOW_CONTROL_WIN * 2); } /** diff --git a/net/tipc/socket.c b/net/tipc/socket.c index f7ac94de24fe..33217fc3d697 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1195,7 +1195,7 @@ static int rx_queue_full(struct tipc_msg *msg, u32 queue_size, u32 base) if (msg_connected(msg)) threshold *= 4; - return (queue_size >= threshold); + return queue_size >= threshold; } /** diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c index ab6eab4c45e2..1a5b9a6bd128 100644 --- a/net/tipc/subscr.c +++ b/net/tipc/subscr.c @@ -604,6 +604,6 @@ int tipc_ispublished(struct tipc_name const *name) { u32 domain = 0; - return(tipc_nametbl_translate(name->type, name->instance,&domain) != 0); + return tipc_nametbl_translate(name->type, name->instance, &domain) != 0; } diff --git a/net/wireless/core.h b/net/wireless/core.h index 37580e090a3d..5d89310b3587 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -86,7 +86,7 @@ struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) static inline bool wiphy_idx_valid(int wiphy_idx) { - return (wiphy_idx >= 0); + return wiphy_idx >= 0; } -- cgit v1.2.3 From 92e44948b2b3b2db8f39f17033f98ae2356156a5 Mon Sep 17 00:00:00 2001 From: Teemu Paasikivi Date: Fri, 24 Sep 2010 07:23:55 +0300 Subject: nl80211: Fix exit from nl80211_set_power_save If interface does not existk, when nl80211_set_power_save is called, (eg. module has been unloaded) it has been causing kernel panic. Added new goto target to avoid crash if get_rdev_dev_by_info_ifindex does not return dev and rdev pointers. Signed-off-by: Teemu Paasikivi Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index f15b1af2c768..4ff827e8c362 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4990,7 +4990,7 @@ static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); if (err) - goto unlock_rdev; + goto unlock_rtnl; wdev = dev->ieee80211_ptr; @@ -5014,6 +5014,7 @@ static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) unlock_rdev: cfg80211_unlock_rdev(rdev); dev_put(dev); +unlock_rtnl: rtnl_unlock(); out: -- cgit v1.2.3 From 93b05238027420978d785569f8c1aa4a6867bc13 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 28 Sep 2010 12:53:14 +0200 Subject: cfg80211: always set IBSS basic rates IBSS started from wireless extensions is currently missing basic rate configuration, fix this by moving the code to generate the default to the common code that gets invoked for both nl80211 and wext. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/ibss.c | 19 +++++++++++++++++++ net/wireless/nl80211.c | 17 ----------------- 2 files changed, 19 insertions(+), 17 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 27a8ce9343c3..8cb6e08373b9 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -88,6 +88,25 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, if (wdev->ssid_len) return -EALREADY; + if (!params->basic_rates) { + /* + * If no rates were explicitly configured, + * use the mandatory rate set for 11b or + * 11a for maximum compatibility. + */ + struct ieee80211_supported_band *sband = + rdev->wiphy.bands[params->channel->band]; + int j; + u32 flag = params->channel->band == IEEE80211_BAND_5GHZ ? + IEEE80211_RATE_MANDATORY_A : + IEEE80211_RATE_MANDATORY_B; + + for (j = 0; j < sband->n_bitrates; j++) { + if (sband->bitrates[j].flags & flag) + params->basic_rates |= BIT(j); + } + } + if (WARN_ON(wdev->connect_keys)) kfree(wdev->connect_keys); wdev->connect_keys = connkeys; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 4ff827e8c362..9c84825803ce 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4119,23 +4119,6 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) goto out; } } - } else { - /* - * If no rates were explicitly configured, - * use the mandatory rate set for 11b or - * 11a for maximum compatibility. - */ - struct ieee80211_supported_band *sband = - wiphy->bands[ibss.channel->band]; - int j; - u32 flag = ibss.channel->band == IEEE80211_BAND_5GHZ ? - IEEE80211_RATE_MANDATORY_A : - IEEE80211_RATE_MANDATORY_B; - - for (j = 0; j < sband->n_bitrates; j++) { - if (sband->bitrates[j].flags & flag) - ibss.basic_rates |= BIT(j); - } } err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); -- cgit v1.2.3 From 5a254ffe3ffdfa84fe076009bd8e88da412180d2 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Mon, 27 Sep 2010 09:07:26 -0700 Subject: wireless: Use first phyX name available when registering phy devices. Choose first available phyX name when creating phy devices. This means that reloading a wifi driver will not cause a change in the name of it's phy device. Also, allow users to rename a phy to any un-used name, including phy%d. Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- net/wireless/core.c | 54 +++++++++++++++++++++++++++++------------------------ 1 file changed, 30 insertions(+), 24 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/core.c b/net/wireless/core.c index 9c21ebf9780e..1684ad91763c 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -178,26 +178,10 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, char *newname) { struct cfg80211_registered_device *rdev2; - int wiphy_idx, taken = -1, result, digits; + int result; assert_cfg80211_lock(); - /* prohibit calling the thing phy%d when %d is not its number */ - sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); - if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { - /* count number of places needed to print wiphy_idx */ - digits = 1; - while (wiphy_idx /= 10) - digits++; - /* - * deny the name if it is phy where is printed - * without leading zeroes. taken == strlen(newname) here - */ - if (taken == strlen(PHY_NAME) + digits) - return -EINVAL; - } - - /* Ignore nop renames */ if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) return 0; @@ -205,7 +189,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, /* Ensure another device does not already have this name. */ list_for_each_entry(rdev2, &cfg80211_rdev_list, list) if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) - return -EINVAL; + return -EEXIST; result = device_rename(&rdev->wiphy.dev, newname); if (result) @@ -320,9 +304,11 @@ static void cfg80211_event_work(struct work_struct *work) struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) { static int wiphy_counter; - - struct cfg80211_registered_device *rdev; + int i; + struct cfg80211_registered_device *rdev, *rdev2; int alloc_size; + char nname[IFNAMSIZ + 1]; + bool found = false; WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); @@ -346,16 +332,36 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { wiphy_counter--; + goto too_many_devs; + } + + /* 64k wiphy devices is enough for anyone! */ + for (i = 0; i < 0xFFFF; i++) { + found = false; + snprintf(nname, sizeof(nname)-1, PHY_NAME "%d", i); + nname[sizeof(nname)-1] = 0; + list_for_each_entry(rdev2, &cfg80211_rdev_list, list) + if (strcmp(nname, dev_name(&rdev2->wiphy.dev)) == 0) { + found = true; + break; + } + + if (!found) + break; + } + + if (unlikely(found)) { +too_many_devs: mutex_unlock(&cfg80211_mutex); - /* ugh, wrapped! */ + /* ugh, too many devices already! */ kfree(rdev); return NULL; } - mutex_unlock(&cfg80211_mutex); - /* give it a proper name */ - dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); + dev_set_name(&rdev->wiphy.dev, "%s", nname); + + mutex_unlock(&cfg80211_mutex); mutex_init(&rdev->mtx); mutex_init(&rdev->devlist_mtx); -- cgit v1.2.3 From 17e5a8082894a4b66cb69e7ec16074f0f01281e1 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 29 Sep 2010 17:15:30 +0200 Subject: nl80211: allow drivers to indicate whether the survey data channel is in use Some user space applications only want to display survey data for the operating channel, however there is no API to get that yet. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- include/linux/nl80211.h | 2 ++ include/net/cfg80211.h | 2 ++ net/wireless/nl80211.c | 2 ++ 3 files changed, 6 insertions(+) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index f0518b0278a9..edd21ae6acf7 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1400,6 +1400,7 @@ enum nl80211_reg_rule_flags { * @__NL80211_SURVEY_INFO_INVALID: attribute number 0 is reserved * @NL80211_SURVEY_INFO_FREQUENCY: center frequency of channel * @NL80211_SURVEY_INFO_NOISE: noise level of channel (u8, dBm) + * @NL80211_SURVEY_INFO_IN_USE: channel is currently being used * @NL80211_SURVEY_INFO_MAX: highest survey info attribute number * currently defined * @__NL80211_SURVEY_INFO_AFTER_LAST: internal use @@ -1408,6 +1409,7 @@ enum nl80211_survey_info { __NL80211_SURVEY_INFO_INVALID, NL80211_SURVEY_INFO_FREQUENCY, NL80211_SURVEY_INFO_NOISE, + NL80211_SURVEY_INFO_IN_USE, /* keep last */ __NL80211_SURVEY_INFO_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index a0613ff62c97..ecc0403b918a 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -293,12 +293,14 @@ struct key_params { * enum survey_info_flags - survey information flags * * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in + * @SURVEY_INFO_IN_USE: channel is currently being used * * Used by the driver to indicate which info in &struct survey_info * it has filled in during the get_survey(). */ enum survey_info_flags { SURVEY_INFO_NOISE_DBM = 1<<0, + SURVEY_INFO_IN_USE = 1<<1, }; /** diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 9c84825803ce..0087c4323c53 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3489,6 +3489,8 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, if (survey->filled & SURVEY_INFO_NOISE_DBM) NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise); + if (survey->filled & SURVEY_INFO_IN_USE) + NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE); nla_nest_end(msg, infoattr); -- cgit v1.2.3 From 663fcafd977f13e6483f7d4cf2ccdbc4fae81ed0 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 30 Sep 2010 21:06:09 +0200 Subject: cfg80211/mac80211: allow management frame TX in AP mode Enable management frame transmission and subscribing to management frames through nl80211 in both cfg80211 and mac80211. Also update a few places that I forgot to update for P2P-client mode previously, and fix a small bug with non-action frames in this API. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 7 ++++++- net/wireless/mlme.c | 54 ++++++++++++++++++++++++++++++++++++++++---------- net/wireless/nl80211.c | 10 ++++++++-- 3 files changed, 57 insertions(+), 14 deletions(-) (limited to 'net/wireless') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 9e63fc28f859..a7a78f28ff6f 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1549,7 +1549,11 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, switch (sdata->vif.type) { case NL80211_IFTYPE_ADHOC: - if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_P2P_GO: + if (!ieee80211_is_action(mgmt->frame_control) || + mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) break; rcu_read_lock(); sta = sta_info_get(sdata, mgmt->da); @@ -1558,6 +1562,7 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, return -ENOLINK; break; case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: break; default: return -EOPNOTSUPP; diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 46f371160896..caf11a427507 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -876,21 +876,53 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, if (ieee80211_is_action(mgmt->frame_control) && mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) { - /* Verify that we are associated with the destination AP */ + int err = 0; + wdev_lock(wdev); - if (!wdev->current_bss || - memcmp(wdev->current_bss->pub.bssid, mgmt->bssid, - ETH_ALEN) != 0 || - ((wdev->iftype == NL80211_IFTYPE_STATION || - wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && - memcmp(wdev->current_bss->pub.bssid, mgmt->da, - ETH_ALEN) != 0)) { - wdev_unlock(wdev); - return -ENOTCONN; - } + switch (wdev->iftype) { + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_CLIENT: + if (!wdev->current_bss) { + err = -ENOTCONN; + break; + } + + if (memcmp(wdev->current_bss->pub.bssid, + mgmt->bssid, ETH_ALEN)) { + err = -ENOTCONN; + break; + } + + /* + * check for IBSS DA must be done by driver as + * cfg80211 doesn't track the stations + */ + if (wdev->iftype == NL80211_IFTYPE_ADHOC) + break; + /* for station, check that DA is the AP */ + if (memcmp(wdev->current_bss->pub.bssid, + mgmt->da, ETH_ALEN)) { + err = -ENOTCONN; + break; + } + break; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_P2P_GO: + case NL80211_IFTYPE_AP_VLAN: + if (memcmp(mgmt->bssid, dev->dev_addr, ETH_ALEN)) + err = -EINVAL; + break; + default: + err = -EOPNOTSUPP; + break; + } wdev_unlock(wdev); + + if (err) + return err; } if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 0087c4323c53..cbbbe9ab452f 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4828,7 +4828,10 @@ static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EOPNOTSUPP; goto out; } @@ -4881,7 +4884,10 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { err = -EOPNOTSUPP; goto out; } -- cgit v1.2.3 From 2234362c427e2ef667595b9b81c0125003ac5607 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 30 Sep 2010 22:17:43 +0200 Subject: cfg80211: fix locking Add missing unlocking of the wiphy in set_channel, and don't try to unlock a non-existing wiphy in set_cqm. Cc: stable@kernel.org [2.6.35+] Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index cbbbe9ab452f..21061ccee557 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -821,11 +821,13 @@ static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) result = get_rdev_dev_by_info_ifindex(info, &rdev, &netdev); if (result) - goto unlock; + goto unlock_rtnl; result = __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); - unlock: + dev_put(netdev); + cfg80211_unlock_rdev(rdev); + unlock_rtnl: rtnl_unlock(); return result; @@ -5097,7 +5099,7 @@ static int nl80211_set_cqm_rssi(struct genl_info *info, err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); if (err) - goto unlock_rdev; + goto unlock_rtnl; wdev = dev->ieee80211_ptr; @@ -5115,9 +5117,10 @@ static int nl80211_set_cqm_rssi(struct genl_info *info, err = rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, threshold, hysteresis); -unlock_rdev: + unlock_rdev: cfg80211_unlock_rdev(rdev); dev_put(dev); + unlock_rtnl: rtnl_unlock(); return err; -- cgit v1.2.3 From e8347ebad2f1b15bddb6ed3ed5f767531eb52dc3 Mon Sep 17 00:00:00 2001 From: Bill Jordan Date: Fri, 1 Oct 2010 13:54:28 -0400 Subject: cfg80211: patches to allow setting the WDS peer Added a nl interface to set the peer bssid of a WDS interface. Signed-off-by: Bill Jordan Signed-off-by: John W. Linville --- include/linux/nl80211.h | 3 +++ net/wireless/nl80211.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index edd21ae6acf7..73d9390d4ddb 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -387,6 +387,8 @@ * of any other interfaces, and other interfaces will again take * precedence when they are used. * + * @NL80211_CMD_SET_WDS_PEER: Set the MAC address of the peer on a WDS interface. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -489,6 +491,7 @@ enum nl80211_commands { NL80211_CMD_NOTIFY_CQM, NL80211_CMD_SET_CHANNEL, + NL80211_CMD_SET_WDS_PEER, /* add new commands above here */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 21061ccee557..fd92b6b7ff04 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -603,6 +603,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS); } CMD(set_channel, SET_CHANNEL); + CMD(set_wds_peer, SET_WDS_PEER); #undef CMD @@ -833,6 +834,53 @@ static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) return result; } +static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *rdev; + struct wireless_dev *wdev; + struct net_device *dev; + u8 *bssid; + int err; + + if (!info->attrs[NL80211_ATTR_MAC]) + return -EINVAL; + + rtnl_lock(); + + err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); + if (err) + goto unlock_rtnl; + + wdev = dev->ieee80211_ptr; + + if (netif_running(dev)) { + err = -EBUSY; + goto out; + } + + if (!rdev->ops->set_wds_peer) { + err = -EOPNOTSUPP; + goto out; + } + + if (wdev->iftype != NL80211_IFTYPE_WDS) { + err = -EOPNOTSUPP; + goto out; + } + + bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); + err = rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid); + +out: + cfg80211_unlock_rdev(rdev); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + + return err; +} + + static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev; @@ -5473,6 +5521,12 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, + { + .cmd = NL80211_CMD_SET_WDS_PEER, + .doit = nl80211_set_wds_peer, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, }; static struct genl_multicast_group nl80211_mlme_mcgrp = { -- cgit v1.2.3 From 4c476991062a0a59523c2bf193f09087f469686a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 4 Oct 2010 21:36:35 +0200 Subject: nl80211: use the new genetlink pre/post_doit hooks This makes nl80211 use the new genetlink pre_doit/post_doit hooks for locking and checking the interface/wiphy index. This significantly reduces the code size and the likelihood of locking errors. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 1737 +++++++++++++++--------------------------------- 1 file changed, 533 insertions(+), 1204 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index fd92b6b7ff04..a96da47d0640 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -23,6 +23,11 @@ #include "nl80211.h" #include "reg.h" +static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, + struct genl_info *info); +static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, + struct genl_info *info); + /* the netlink family */ static struct genl_family nl80211_fam = { .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ @@ -31,6 +36,8 @@ static struct genl_family nl80211_fam = { .version = 1, /* no particular meaning now */ .maxattr = NL80211_ATTR_MAX, .netnsok = true, + .pre_doit = nl80211_pre_doit, + .post_doit = nl80211_post_doit, }; /* internal helper: get rdev and dev */ @@ -704,28 +711,18 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) { struct sk_buff *msg; - struct cfg80211_registered_device *dev; - - dev = cfg80211_get_dev_from_info(info); - if (IS_ERR(dev)) - return PTR_ERR(dev); + struct cfg80211_registered_device *dev = info->user_ptr[0]; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) - goto out_err; - - if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) - goto out_free; + return -ENOMEM; - cfg80211_unlock_rdev(dev); + if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) { + nlmsg_free(msg); + return -ENOBUFS; + } return genlmsg_reply(msg, info); - - out_free: - nlmsg_free(msg); - out_err: - cfg80211_unlock_rdev(dev); - return -ENOBUFS; } static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { @@ -814,24 +811,10 @@ static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *netdev; - int result; - - rtnl_lock(); - - result = get_rdev_dev_by_info_ifindex(info, &rdev, &netdev); - if (result) - goto unlock_rtnl; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *netdev = info->user_ptr[1]; - result = __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); - - dev_put(netdev); - cfg80211_unlock_rdev(rdev); - unlock_rtnl: - rtnl_unlock(); - - return result; + return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); } static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) @@ -893,8 +876,6 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) u32 frag_threshold = 0, rts_threshold = 0; u8 coverage_class = 0; - rtnl_lock(); - /* * Try to find the wiphy and netdev. Normally this * function shouldn't need the netdev, but this is @@ -921,8 +902,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) rdev = __cfg80211_rdev_from_info(info); if (IS_ERR(rdev)) { mutex_unlock(&cfg80211_mutex); - result = PTR_ERR(rdev); - goto unlock; + return PTR_ERR(rdev); } wdev = NULL; netdev = NULL; @@ -1104,8 +1084,6 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) mutex_unlock(&rdev->mtx); if (netdev) dev_put(netdev); - unlock: - rtnl_unlock(); return result; } @@ -1185,33 +1163,20 @@ static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback * static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) { struct sk_buff *msg; - struct cfg80211_registered_device *dev; - struct net_device *netdev; - int err; - - err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev); - if (err) - return err; + struct cfg80211_registered_device *dev = info->user_ptr[0]; + struct net_device *netdev = info->user_ptr[1]; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) - goto out_err; + return -ENOMEM; if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, - dev, netdev) < 0) - goto out_free; - - dev_put(netdev); - cfg80211_unlock_rdev(dev); + dev, netdev) < 0) { + nlmsg_free(msg); + return -ENOBUFS; + } return genlmsg_reply(msg, info); - - out_free: - nlmsg_free(msg); - out_err: - dev_put(netdev); - cfg80211_unlock_rdev(dev); - return -ENOBUFS; } static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { @@ -1271,39 +1236,29 @@ static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct vif_params params; int err; enum nl80211_iftype otype, ntype; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; u32 _flags, *flags = NULL; bool change = false; memset(¶ms, 0, sizeof(params)); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - otype = ntype = dev->ieee80211_ptr->iftype; if (info->attrs[NL80211_ATTR_IFTYPE]) { ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); if (otype != ntype) change = true; - if (ntype > NL80211_IFTYPE_MAX) { - err = -EINVAL; - goto unlock; - } + if (ntype > NL80211_IFTYPE_MAX) + return -EINVAL; } if (info->attrs[NL80211_ATTR_MESH_ID]) { - if (ntype != NL80211_IFTYPE_MESH_POINT) { - err = -EINVAL; - goto unlock; - } + if (ntype != NL80211_IFTYPE_MESH_POINT) + return -EINVAL; params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); change = true; @@ -1314,20 +1269,18 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) change = true; err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); if (err) - goto unlock; + return err; } else { params.use_4addr = -1; } if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { - if (ntype != NL80211_IFTYPE_MONITOR) { - err = -EINVAL; - goto unlock; - } + if (ntype != NL80211_IFTYPE_MONITOR) + return -EINVAL; err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], &_flags); if (err) - goto unlock; + return err; flags = &_flags; change = true; @@ -1341,17 +1294,12 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) if (!err && params.use_4addr != -1) dev->ieee80211_ptr->use_4addr = params.use_4addr; - unlock: - dev_put(dev); - cfg80211_unlock_rdev(rdev); - unlock_rtnl: - rtnl_unlock(); return err; } static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct vif_params params; int err; enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; @@ -1368,19 +1316,9 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } - rtnl_lock(); - - rdev = cfg80211_get_dev_from_info(info); - if (IS_ERR(rdev)) { - err = PTR_ERR(rdev); - goto unlock_rtnl; - } - if (!rdev->ops->add_virtual_intf || - !(rdev->wiphy.interface_modes & (1 << type))) { - err = -EOPNOTSUPP; - goto unlock; - } + !(rdev->wiphy.interface_modes & (1 << type))) + return -EOPNOTSUPP; if (type == NL80211_IFTYPE_MESH_POINT && info->attrs[NL80211_ATTR_MESH_ID]) { @@ -1392,7 +1330,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); if (err) - goto unlock; + return err; } err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? @@ -1402,38 +1340,18 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) nla_data(info->attrs[NL80211_ATTR_IFNAME]), type, err ? NULL : &flags, ¶ms); - unlock: - cfg80211_unlock_rdev(rdev); - unlock_rtnl: - rtnl_unlock(); return err; } static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; - - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->del_virtual_intf) { - err = -EOPNOTSUPP; - goto out; - } + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; - err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev); + if (!rdev->ops->del_virtual_intf) + return -EOPNOTSUPP; - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); - return err; + return rdev->ops->del_virtual_intf(&rdev->wiphy, dev); } struct get_key_cookie { @@ -1486,9 +1404,9 @@ static void get_key_callback(void *c, struct key_params *params) static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; u8 key_idx = 0; u8 *mac_addr = NULL; struct get_key_cookie cookie = { @@ -1506,30 +1424,17 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->get_key) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->get_key) + return -EOPNOTSUPP; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) { - err = -ENOMEM; - goto out; - } + if (!msg) + return -ENOMEM; hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, NL80211_CMD_NEW_KEY); - - if (IS_ERR(hdr)) { - err = PTR_ERR(hdr); - goto free_msg; - } + if (IS_ERR(hdr)) + return PTR_ERR(hdr); cookie.msg = msg; cookie.idx = key_idx; @@ -1549,28 +1454,21 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) goto nla_put_failure; genlmsg_end(msg, hdr); - err = genlmsg_reply(msg, info); - goto out; + return genlmsg_reply(msg, info); nla_put_failure: err = -ENOBUFS; free_msg: nlmsg_free(msg); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); - return err; } static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct key_parse key; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; int (*func)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index); @@ -1585,21 +1483,13 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) if (!key.def && !key.defmgmt) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - if (key.def) func = rdev->ops->set_default_key; else func = rdev->ops->set_default_mgmt_key; - if (!func) { - err = -EOPNOTSUPP; - goto out; - } + if (!func) + return -EOPNOTSUPP; wdev_lock(dev->ieee80211_ptr); err = nl80211_key_allowed(dev->ieee80211_ptr); @@ -1616,21 +1506,14 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) #endif wdev_unlock(dev->ieee80211_ptr); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - - unlock_rtnl: - rtnl_unlock(); - return err; } static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; struct key_parse key; u8 *mac_addr = NULL; @@ -1644,21 +1527,11 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->add_key) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->add_key) + return -EOPNOTSUPP; - if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) { - err = -EINVAL; - goto out; - } + if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) + return -EINVAL; wdev_lock(dev->ieee80211_ptr); err = nl80211_key_allowed(dev->ieee80211_ptr); @@ -1667,20 +1540,14 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) mac_addr, &key.p); wdev_unlock(dev->ieee80211_ptr); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); - return err; } static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; u8 *mac_addr = NULL; struct key_parse key; @@ -1691,16 +1558,8 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->del_key) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->del_key) + return -EOPNOTSUPP; wdev_lock(dev->ieee80211_ptr); err = nl80211_key_allowed(dev->ieee80211_ptr); @@ -1717,13 +1576,6 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) #endif wdev_unlock(dev->ieee80211_ptr); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - - unlock_rtnl: - rtnl_unlock(); - return err; } @@ -1731,36 +1583,25 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) { int (*call)(struct wiphy *wiphy, struct net_device *dev, struct beacon_parameters *info); - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct beacon_parameters params; int haveinfo = 0; if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL])) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EOPNOTSUPP; switch (info->genlhdr->cmd) { case NL80211_CMD_NEW_BEACON: /* these are required for NEW_BEACON */ if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || !info->attrs[NL80211_ATTR_DTIM_PERIOD] || - !info->attrs[NL80211_ATTR_BEACON_HEAD]) { - err = -EINVAL; - goto out; - } + !info->attrs[NL80211_ATTR_BEACON_HEAD]) + return -EINVAL; call = rdev->ops->add_beacon; break; @@ -1769,14 +1610,11 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) break; default: WARN_ON(1); - err = -EOPNOTSUPP; - goto out; + return -EOPNOTSUPP; } - if (!call) { - err = -EOPNOTSUPP; - goto out; - } + if (!call) + return -EOPNOTSUPP; memset(¶ms, 0, sizeof(params)); @@ -1806,53 +1644,25 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) haveinfo = 1; } - if (!haveinfo) { - err = -EINVAL; - goto out; - } - - err = call(&rdev->wiphy, dev, ¶ms); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); + if (!haveinfo) + return -EINVAL; - return err; + return call(&rdev->wiphy, dev, ¶ms); } static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; - - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; - if (!rdev->ops->del_beacon) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->del_beacon) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EOPNOTSUPP; - goto out; - } - err = rdev->ops->del_beacon(&rdev->wiphy, dev); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EOPNOTSUPP; - return err; + return rdev->ops->del_beacon(&rdev->wiphy, dev); } static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { @@ -2049,12 +1859,12 @@ static int nl80211_dump_station(struct sk_buff *skb, static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct station_info sinfo; struct sk_buff *msg; u8 *mac_addr = NULL; + int err; memset(&sinfo, 0, sizeof(sinfo)); @@ -2063,41 +1873,24 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); + if (!rdev->ops->get_station) + return -EOPNOTSUPP; - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); + err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo); if (err) - goto out_rtnl; - - if (!rdev->ops->get_station) { - err = -EOPNOTSUPP; - goto out; - } - - err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo); - if (err) - goto out; + return err; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) - goto out; + return -ENOMEM; if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, - dev, mac_addr, &sinfo) < 0) - goto out_free; - - err = genlmsg_reply(msg, info); - goto out; - - out_free: - nlmsg_free(msg); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + dev, mac_addr, &sinfo) < 0) { + nlmsg_free(msg); + return -ENOBUFS; + } - return err; + return genlmsg_reply(msg, info); } /* @@ -2127,9 +1920,9 @@ static int get_vlan(struct genl_info *info, static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; struct station_parameters params; u8 *mac_addr = NULL; @@ -2167,12 +1960,6 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) params.plink_action = nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - err = get_vlan(info, rdev, ¶ms.vlan); if (err) goto out; @@ -2234,19 +2021,15 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) out: if (params.vlan) dev_put(params.vlan); - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); return err; } static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; struct station_parameters params; u8 *mac_addr = NULL; @@ -2283,18 +2066,10 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) if (parse_station_flags(info, ¶ms)) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EINVAL; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EINVAL; err = get_vlan(info, rdev, ¶ms.vlan); if (err) @@ -2318,52 +2093,28 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) out: if (params.vlan) dev_put(params.vlan); - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); - return err; } static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u8 *mac_addr = NULL; if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EINVAL; - goto out; - } - - if (!rdev->ops->del_station) { - err = -EOPNOTSUPP; - goto out; - } - - err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr); + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EINVAL; - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + if (!rdev->ops->del_station) + return -EOPNOTSUPP; - return err; + return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr); } static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, @@ -2490,9 +2241,9 @@ static int nl80211_dump_mpath(struct sk_buff *skb, static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; struct mpath_info pinfo; struct sk_buff *msg; u8 *dst = NULL; @@ -2505,53 +2256,33 @@ static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) dst = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->get_mpath) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->get_mpath) + return -EOPNOTSUPP; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { - err = -EOPNOTSUPP; - goto out; - } + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) + return -EOPNOTSUPP; err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo); if (err) - goto out; + return err; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) - goto out; + return -ENOMEM; if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, - dev, dst, next_hop, &pinfo) < 0) - goto out_free; - - err = genlmsg_reply(msg, info); - goto out; - - out_free: - nlmsg_free(msg); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + dev, dst, next_hop, &pinfo) < 0) { + nlmsg_free(msg); + return -ENOBUFS; + } - return err; + return genlmsg_reply(msg, info); } static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u8 *dst = NULL; u8 *next_hop = NULL; @@ -2564,42 +2295,22 @@ static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) dst = nla_data(info->attrs[NL80211_ATTR_MAC]); next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->change_mpath) { - err = -EOPNOTSUPP; - goto out; - } - - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { - err = -EOPNOTSUPP; - goto out; - } - - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!rdev->ops->change_mpath) + return -EOPNOTSUPP; - err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) + return -EOPNOTSUPP; - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + if (!netif_running(dev)) + return -ENETDOWN; - return err; + return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); } + static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u8 *dst = NULL; u8 *next_hop = NULL; @@ -2612,75 +2323,37 @@ static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) dst = nla_data(info->attrs[NL80211_ATTR_MAC]); next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->add_mpath) { - err = -EOPNOTSUPP; - goto out; - } - - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) { - err = -EOPNOTSUPP; - goto out; - } - - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!rdev->ops->add_mpath) + return -EOPNOTSUPP; - err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) + return -EOPNOTSUPP; - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + if (!netif_running(dev)) + return -ENETDOWN; - return err; + return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); } static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u8 *dst = NULL; if (info->attrs[NL80211_ATTR_MAC]) dst = nla_data(info->attrs[NL80211_ATTR_MAC]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->del_mpath) { - err = -EOPNOTSUPP; - goto out; - } - - err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + if (!rdev->ops->del_mpath) + return -EOPNOTSUPP; - return err; + return rdev->ops->del_mpath(&rdev->wiphy, dev, dst); } static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct bss_parameters params; memset(¶ms, 0, sizeof(params)); @@ -2708,32 +2381,14 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_AP_ISOLATE]) params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->change_bss) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->change_bss) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EOPNOTSUPP; - goto out; - } - - err = rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EOPNOTSUPP; - return err; + return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms); } static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { @@ -2812,37 +2467,26 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) static int nl80211_get_mesh_params(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct mesh_config cur_params; int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; void *hdr; struct nlattr *pinfoattr; struct sk_buff *msg; - rtnl_lock(); - - /* Look up our device */ - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->get_mesh_params) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->get_mesh_params) + return -EOPNOTSUPP; /* Get the mesh params */ err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params); if (err) - goto out; + return err; /* Draw up a netlink message to send back */ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) { - err = -ENOBUFS; - goto out; - } + if (!msg) + return -ENOMEM; hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, NL80211_CMD_GET_MESH_PARAMS); if (!hdr) @@ -2881,22 +2525,13 @@ static int nl80211_get_mesh_params(struct sk_buff *skb, cur_params.dot11MeshHWMPRootMode); nla_nest_end(msg, pinfoattr); genlmsg_end(msg, hdr); - err = genlmsg_reply(msg, info); - goto out; + return genlmsg_reply(msg, info); nla_put_failure: genlmsg_cancel(msg, hdr); nlmsg_free(msg); - err = -EMSGSIZE; - out: - /* Cleanup */ - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); - - return err; -} + return -ENOBUFS; +} #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \ do {\ @@ -2925,10 +2560,9 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) { - int err; u32 mask; - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct mesh_config cfg; struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; struct nlattr *parent_attr; @@ -2940,16 +2574,8 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) parent_attr, nl80211_meshconf_params_policy)) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - - if (!rdev->ops->set_mesh_params) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->set_mesh_params) + return -EOPNOTSUPP; /* This makes sure that there aren't more than 32 mesh config * parameters (otherwise our bitfield scheme would not work.) */ @@ -2995,16 +2621,7 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info) nla_get_u8); /* Apply changes */ - err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask); - - out: - /* cleanup */ - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); - - return err; + return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask); } #undef FILL_IN_MESH_PARAM_IF_SET @@ -3187,8 +2804,8 @@ static int validate_scan_freqs(struct nlattr *freqs) static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct cfg80211_scan_request *request; struct cfg80211_ssid *ssid; struct ieee80211_channel *channel; @@ -3201,36 +2818,22 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - wiphy = &rdev->wiphy; - if (!rdev->ops->scan) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->scan) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; - if (rdev->scan_req) { - err = -EBUSY; - goto out; - } + if (rdev->scan_req) + return -EBUSY; if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { n_channels = validate_scan_freqs( info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); - if (!n_channels) { - err = -EINVAL; - goto out; - } + if (!n_channels) + return -EINVAL; } else { n_channels = 0; @@ -3243,29 +2846,23 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) n_ssids++; - if (n_ssids > wiphy->max_scan_ssids) { - err = -EINVAL; - goto out; - } + if (n_ssids > wiphy->max_scan_ssids) + return -EINVAL; if (info->attrs[NL80211_ATTR_IE]) ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); else ie_len = 0; - if (ie_len > wiphy->max_scan_ie_len) { - err = -EINVAL; - goto out; - } + if (ie_len > wiphy->max_scan_ie_len) + return -EINVAL; request = kzalloc(sizeof(*request) + sizeof(*ssid) * n_ssids + sizeof(channel) * n_channels + ie_len, GFP_KERNEL); - if (!request) { - err = -ENOMEM; - goto out; - } + if (!request) + return -ENOMEM; if (n_ssids) request->ssids = (void *)&request->channels[n_channels]; @@ -3353,18 +2950,11 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) if (!err) { nl80211_send_scan_start(rdev, dev); dev_hold(dev); - } - + } else { out_free: - if (err) { rdev->scan_req = NULL; kfree(request); } - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); return err; } @@ -3643,8 +3233,8 @@ static bool nl80211_valid_cipher_suite(u32 cipher) static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct ieee80211_channel *chan; const u8 *bssid, *ssid, *ie = NULL; int err, ssid_len, ie_len = 0; @@ -3686,12 +3276,6 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) key.p.key = NULL; } - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - if (key.idx >= 0) { int i; bool ok = false; @@ -3701,35 +3285,25 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) break; } } - if (!ok) { - err = -EINVAL; - goto out; - } + if (!ok) + return -EINVAL; } - if (!rdev->ops->auth) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->auth) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); chan = ieee80211_get_channel(&rdev->wiphy, nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); - if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) { - err = -EINVAL; - goto out; - } + if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) + return -EINVAL; ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); @@ -3740,24 +3314,15 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) } auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); - if (!nl80211_valid_auth_type(auth_type)) { - err = -EINVAL; - goto out; - } + if (!nl80211_valid_auth_type(auth_type)) + return -EINVAL; local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; - err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, - ssid, ssid_len, ie, ie_len, - key.p.key, key.p.key_len, key.idx, - local_state_change); - -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); - return err; + return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, + ssid, ssid_len, ie, ie_len, + key.p.key, key.p.key_len, key.idx, + local_state_change); } static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, @@ -3841,8 +3406,8 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct cfg80211_crypto_settings crypto; struct ieee80211_channel *chan; const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL; @@ -3857,36 +3422,22 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) !info->attrs[NL80211_ATTR_WIPHY_FREQ]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->assoc) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->assoc) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); chan = ieee80211_get_channel(&rdev->wiphy, nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); - if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) { - err = -EINVAL; - goto out; - } + if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) + return -EINVAL; ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); @@ -3901,10 +3452,8 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); if (mfp == NL80211_MFP_REQUIRED) use_mfp = true; - else if (mfp != NL80211_MFP_NO) { - err = -EINVAL; - goto out; - } + else if (mfp != NL80211_MFP_NO) + return -EINVAL; } if (info->attrs[NL80211_ATTR_PREV_BSSID]) @@ -3916,20 +3465,15 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) ssid, ssid_len, ie, ie_len, use_mfp, &crypto); -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); return err; } static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; const u8 *ie = NULL, *bssid; - int err, ie_len = 0; + int ie_len = 0; u16 reason_code; bool local_state_change; @@ -3942,35 +3486,22 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) if (!info->attrs[NL80211_ATTR_REASON_CODE]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->deauth) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->deauth) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); if (reason_code == 0) { /* Reason Code 0 is reserved */ - err = -EINVAL; - goto out; + return -EINVAL; } if (info->attrs[NL80211_ATTR_IE]) { @@ -3980,23 +3511,16 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; - err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, - local_state_change); - -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); - return err; + return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, + local_state_change); } static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; const u8 *ie = NULL, *bssid; - int err, ie_len = 0; + int ie_len = 0; u16 reason_code; bool local_state_change; @@ -4009,35 +3533,22 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) if (!info->attrs[NL80211_ATTR_REASON_CODE]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->disassoc) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->disassoc) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); if (reason_code == 0) { /* Reason Code 0 is reserved */ - err = -EINVAL; - goto out; + return -EINVAL; } if (info->attrs[NL80211_ATTR_IE]) { @@ -4047,21 +3558,14 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; - err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, - local_state_change); - -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); - return err; + return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, + local_state_change); } static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct cfg80211_ibss_params ibss; struct wiphy *wiphy; struct cfg80211_cached_keys *connkeys = NULL; @@ -4086,26 +3590,14 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->join_ibss) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->join_ibss) + return -EOPNOTSUPP; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { - err = -EOPNOTSUPP; - goto out; - } + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; wiphy = &rdev->wiphy; @@ -4123,24 +3615,12 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); if (!ibss.channel || ibss.channel->flags & IEEE80211_CHAN_NO_IBSS || - ibss.channel->flags & IEEE80211_CHAN_DISABLED) { - err = -EINVAL; - goto out; - } + ibss.channel->flags & IEEE80211_CHAN_DISABLED) + return -EINVAL; ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; - if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { - connkeys = nl80211_parse_connkeys(rdev, - info->attrs[NL80211_ATTR_KEYS]); - if (IS_ERR(connkeys)) { - err = PTR_ERR(connkeys); - connkeys = NULL; - goto out; - } - } - if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); @@ -4150,10 +3630,8 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) wiphy->bands[ibss.channel->band]; int i, j; - if (n_rates == 0) { - err = -EINVAL; - goto out; - } + if (n_rates == 0) + return -EINVAL; for (i = 0; i < n_rates; i++) { int rate = (rates[i] & 0x7f) * 5; @@ -4166,60 +3644,39 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) break; } } - if (!found) { - err = -EINVAL; - goto out; - } + if (!found) + return -EINVAL; } } - err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); + if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { + connkeys = nl80211_parse_connkeys(rdev, + info->attrs[NL80211_ATTR_KEYS]); + if (IS_ERR(connkeys)) + return PTR_ERR(connkeys); + } -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: + err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); if (err) kfree(connkeys); - rtnl_unlock(); return err; } static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; - int err; - - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; - if (!rdev->ops->leave_ibss) { - err = -EOPNOTSUPP; - goto out; - } - - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->leave_ibss) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) + return -EOPNOTSUPP; - err = cfg80211_leave_ibss(rdev, dev, false); + if (!netif_running(dev)) + return -ENETDOWN; -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); - return err; + return cfg80211_leave_ibss(rdev, dev, false); } #ifdef CONFIG_NL80211_TESTMODE @@ -4229,20 +3686,12 @@ static struct genl_multicast_group nl80211_testmode_mcgrp = { static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int err; if (!info->attrs[NL80211_ATTR_TESTDATA]) return -EINVAL; - rtnl_lock(); - - rdev = cfg80211_get_dev_from_info(info); - if (IS_ERR(rdev)) { - err = PTR_ERR(rdev); - goto unlock_rtnl; - } - err = -EOPNOTSUPP; if (rdev->ops->testmode_cmd) { rdev->testmode_info = info; @@ -4252,10 +3701,6 @@ static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) rdev->testmode_info = NULL; } - cfg80211_unlock_rdev(rdev); - - unlock_rtnl: - rtnl_unlock(); return err; } @@ -4346,8 +3791,8 @@ EXPORT_SYMBOL(cfg80211_testmode_event); static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct cfg80211_connect_params connect; struct wiphy *wiphy; struct cfg80211_cached_keys *connkeys = NULL; @@ -4376,22 +3821,13 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) NL80211_MAX_NR_CIPHER_SUITES); if (err) return err; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; wiphy = &rdev->wiphy; @@ -4410,39 +3846,27 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) ieee80211_get_channel(wiphy, nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); if (!connect.channel || - connect.channel->flags & IEEE80211_CHAN_DISABLED) { - err = -EINVAL; - goto out; - } + connect.channel->flags & IEEE80211_CHAN_DISABLED) + return -EINVAL; } if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { connkeys = nl80211_parse_connkeys(rdev, info->attrs[NL80211_ATTR_KEYS]); - if (IS_ERR(connkeys)) { - err = PTR_ERR(connkeys); - connkeys = NULL; - goto out; - } + if (IS_ERR(connkeys)) + return PTR_ERR(connkeys); } err = cfg80211_connect(rdev, dev, &connect, connkeys); - -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: if (err) kfree(connkeys); - rtnl_unlock(); return err; } static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; - int err; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u16 reason; if (!info->attrs[NL80211_ATTR_REASON_CODE]) @@ -4453,36 +3877,19 @@ static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) if (reason == 0) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } - - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - err = cfg80211_disconnect(rdev, dev, reason, true); + if (!netif_running(dev)) + return -ENETDOWN; -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); - return err; + return cfg80211_disconnect(rdev, dev, reason, true); } static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct net *net; int err; u32 pid; @@ -4492,43 +3899,26 @@ static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); - rtnl_lock(); - - rdev = cfg80211_get_dev_from_info(info); - if (IS_ERR(rdev)) { - err = PTR_ERR(rdev); - goto out_rtnl; - } - net = get_net_ns_by_pid(pid); - if (IS_ERR(net)) { - err = PTR_ERR(net); - goto out; - } + if (IS_ERR(net)) + return PTR_ERR(net); err = 0; /* check if anything to do */ - if (net_eq(wiphy_net(&rdev->wiphy), net)) - goto out_put_net; + if (!net_eq(wiphy_net(&rdev->wiphy), net)) + err = cfg80211_switch_netns(rdev, net); - err = cfg80211_switch_netns(rdev, net); - out_put_net: put_net(net); - out: - cfg80211_unlock_rdev(rdev); - out_rtnl: - rtnl_unlock(); return err; } static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_pmksa *pmksa) = NULL; - int err; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; struct cfg80211_pmksa pmksa; memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); @@ -4539,20 +3929,12 @@ static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) if (!info->attrs[NL80211_ATTR_PMKID]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; - pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; switch (info->genlhdr->cmd) { case NL80211_CMD_SET_PMKSA: @@ -4566,62 +3948,32 @@ static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) break; } - if (!rdev_ops) { - err = -EOPNOTSUPP; - goto out; - } - - err = rdev_ops(&rdev->wiphy, dev, &pmksa); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + if (!rdev_ops) + return -EOPNOTSUPP; - return err; + return rdev_ops(&rdev->wiphy, dev, &pmksa); } static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - int err; - struct net_device *dev; - - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto out_rtnl; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto out; - } - - if (!rdev->ops->flush_pmksa) { - err = -EOPNOTSUPP; - goto out; - } - - err = rdev->ops->flush_pmksa(&rdev->wiphy, dev); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - out_rtnl: - rtnl_unlock(); + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - return err; + if (!rdev->ops->flush_pmksa) + return -EOPNOTSUPP; + return rdev->ops->flush_pmksa(&rdev->wiphy, dev); } static int nl80211_remain_on_channel(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct ieee80211_channel *chan; struct sk_buff *msg; void *hdr; @@ -4643,21 +3995,11 @@ static int nl80211_remain_on_channel(struct sk_buff *skb, if (!duration || !msecs_to_jiffies(duration) || duration > 5000) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->remain_on_channel) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->remain_on_channel) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { channel_type = nla_get_u32( @@ -4665,24 +4007,18 @@ static int nl80211_remain_on_channel(struct sk_buff *skb, if (channel_type != NL80211_CHAN_NO_HT && channel_type != NL80211_CHAN_HT20 && channel_type != NL80211_CHAN_HT40PLUS && - channel_type != NL80211_CHAN_HT40MINUS) { - err = -EINVAL; - goto out; - } + channel_type != NL80211_CHAN_HT40MINUS) + return -EINVAL; } freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); chan = rdev_freq_to_chan(rdev, freq, channel_type); - if (chan == NULL) { - err = -EINVAL; - goto out; - } + if (chan == NULL) + return -EINVAL; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) { - err = -ENOMEM; - goto out; - } + if (!msg) + return -ENOMEM; hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, NL80211_CMD_REMAIN_ON_CHANNEL); @@ -4701,58 +4037,35 @@ static int nl80211_remain_on_channel(struct sk_buff *skb, NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); genlmsg_end(msg, hdr); - err = genlmsg_reply(msg, info); - goto out; + + return genlmsg_reply(msg, info); nla_put_failure: err = -ENOBUFS; free_msg: nlmsg_free(msg); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); return err; } static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u64 cookie; - int err; if (!info->attrs[NL80211_ATTR_COOKIE]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->cancel_remain_on_channel) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->cancel_remain_on_channel) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); - err = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); - - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); - return err; + return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); } static u32 rateset_to_mask(struct ieee80211_supported_band *sband, @@ -4788,26 +4101,18 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, struct genl_info *info) { struct nlattr *tb[NL80211_TXRATE_MAX + 1]; - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct cfg80211_bitrate_mask mask; - int err, rem, i; - struct net_device *dev; + int rem, i; + struct net_device *dev = info->user_ptr[1]; struct nlattr *tx_rates; struct ieee80211_supported_band *sband; if (info->attrs[NL80211_ATTR_TX_RATES] == NULL) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->set_bitrate_mask) { - err = -EOPNOTSUPP; - goto unlock; - } + if (!rdev->ops->set_bitrate_mask) + return -EOPNOTSUPP; memset(&mask, 0, sizeof(mask)); /* Default to all rates enabled */ @@ -4824,15 +4129,11 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { enum ieee80211_band band = nla_type(tx_rates); - if (band < 0 || band >= IEEE80211_NUM_BANDS) { - err = -EINVAL; - goto unlock; - } + if (band < 0 || band >= IEEE80211_NUM_BANDS) + return -EINVAL; sband = rdev->wiphy.bands[band]; - if (sband == NULL) { - err = -EINVAL; - goto unlock; - } + if (sband == NULL) + return -EINVAL; nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), nla_len(tx_rates), nl80211_txattr_policy); if (tb[NL80211_TXRATE_LEGACY]) { @@ -4840,29 +4141,19 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, sband, nla_data(tb[NL80211_TXRATE_LEGACY]), nla_len(tb[NL80211_TXRATE_LEGACY])); - if (mask.control[band].legacy == 0) { - err = -EINVAL; - goto unlock; - } + if (mask.control[band].legacy == 0) + return -EINVAL; } } - err = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask); - - unlock: - dev_put(dev); - cfg80211_unlock_rdev(rdev); - unlock_rtnl: - rtnl_unlock(); - return err; + return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask); } static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; - int err; if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) return -EINVAL; @@ -4870,44 +4161,28 @@ static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_FRAME_TYPE]) frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EOPNOTSUPP; /* not much point in registering if we can't reply */ - if (!rdev->ops->mgmt_tx) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->mgmt_tx) + return -EOPNOTSUPP; - err = cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid, + return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid, frame_type, nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); - return err; } static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; struct ieee80211_channel *chan; enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; bool channel_type_valid = false; @@ -4921,31 +4196,19 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) !info->attrs[NL80211_ATTR_WIPHY_FREQ]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - if (!rdev->ops->mgmt_tx) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->mgmt_tx) + return -EOPNOTSUPP; if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && - dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { - err = -EOPNOTSUPP; - goto out; - } + dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) + return -EOPNOTSUPP; - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } + if (!netif_running(dev)) + return -ENETDOWN; if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { channel_type = nla_get_u32( @@ -4953,25 +4216,19 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) if (channel_type != NL80211_CHAN_NO_HT && channel_type != NL80211_CHAN_HT20 && channel_type != NL80211_CHAN_HT40PLUS && - channel_type != NL80211_CHAN_HT40MINUS) { - err = -EINVAL; - goto out; - } + channel_type != NL80211_CHAN_HT40MINUS) + return -EINVAL; channel_type_valid = true; } freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); chan = rdev_freq_to_chan(rdev, freq, channel_type); - if (chan == NULL) { - err = -EINVAL; - goto out; - } + if (chan == NULL) + return -EINVAL; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) { - err = -ENOMEM; - goto out; - } + if (!msg) + return -ENOMEM; hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, NL80211_CMD_FRAME); @@ -4991,110 +4248,72 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie); genlmsg_end(msg, hdr); - err = genlmsg_reply(msg, info); - goto out; + return genlmsg_reply(msg, info); nla_put_failure: err = -ENOBUFS; free_msg: nlmsg_free(msg); - out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); return err; } static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct wireless_dev *wdev; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; u8 ps_state; bool state; int err; - if (!info->attrs[NL80211_ATTR_PS_STATE]) { - err = -EINVAL; - goto out; - } + if (!info->attrs[NL80211_ATTR_PS_STATE]) + return -EINVAL; ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); - if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) { - err = -EINVAL; - goto out; - } - - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; + if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) + return -EINVAL; wdev = dev->ieee80211_ptr; - if (!rdev->ops->set_power_mgmt) { - err = -EOPNOTSUPP; - goto unlock_rdev; - } + if (!rdev->ops->set_power_mgmt) + return -EOPNOTSUPP; state = (ps_state == NL80211_PS_ENABLED) ? true : false; if (state == wdev->ps) - goto unlock_rdev; - - wdev->ps = state; - - if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, wdev->ps, - wdev->ps_timeout)) - /* assume this means it's off */ - wdev->ps = false; - -unlock_rdev: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); + return 0; -out: + err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state, + wdev->ps_timeout); + if (!err) + wdev->ps = state; return err; } static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; enum nl80211_ps_state ps_state; struct wireless_dev *wdev; - struct net_device *dev; + struct net_device *dev = info->user_ptr[1]; struct sk_buff *msg; void *hdr; int err; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - wdev = dev->ieee80211_ptr; - if (!rdev->ops->set_power_mgmt) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->set_power_mgmt) + return -EOPNOTSUPP; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) { - err = -ENOMEM; - goto out; - } + if (!msg) + return -ENOMEM; hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, NL80211_CMD_GET_POWER_SAVE); if (!hdr) { - err = -ENOMEM; + err = -ENOBUFS; goto free_msg; } @@ -5106,22 +4325,12 @@ static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state); genlmsg_end(msg, hdr); - err = genlmsg_reply(msg, info); - goto out; + return genlmsg_reply(msg, info); -nla_put_failure: + nla_put_failure: err = -ENOBUFS; - -free_msg: + free_msg: nlmsg_free(msg); - -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - -unlock_rtnl: - rtnl_unlock(); - return err; } @@ -5135,43 +4344,24 @@ nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { static int nl80211_set_cqm_rssi(struct genl_info *info, s32 threshold, u32 hysteresis) { - struct cfg80211_registered_device *rdev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct wireless_dev *wdev; - struct net_device *dev; - int err; + struct net_device *dev = info->user_ptr[1]; if (threshold > 0) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - wdev = dev->ieee80211_ptr; - if (!rdev->ops->set_cqm_rssi_config) { - err = -EOPNOTSUPP; - goto unlock_rdev; - } + if (!rdev->ops->set_cqm_rssi_config) + return -EOPNOTSUPP; if (wdev->iftype != NL80211_IFTYPE_STATION && - wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) { - err = -EOPNOTSUPP; - goto unlock_rdev; - } - - err = rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, - threshold, hysteresis); - - unlock_rdev: - cfg80211_unlock_rdev(rdev); - dev_put(dev); - unlock_rtnl: - rtnl_unlock(); + wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) + return -EOPNOTSUPP; - return err; + return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev, + threshold, hysteresis); } static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) @@ -5205,6 +4395,54 @@ out: return err; } +#define NL80211_FLAG_NEED_WIPHY 0x01 +#define NL80211_FLAG_NEED_NETDEV 0x02 +#define NL80211_FLAG_NEED_RTNL 0x04 + +static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, + struct genl_info *info) +{ + struct cfg80211_registered_device *rdev; + struct net_device *dev; + int err; + bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; + + if (rtnl) + rtnl_lock(); + + if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { + rdev = cfg80211_get_dev_from_info(info); + if (IS_ERR(rdev)) { + if (rtnl) + rtnl_unlock(); + return PTR_ERR(rdev); + } + info->user_ptr[0] = rdev; + } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { + err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); + if (err) { + if (rtnl) + rtnl_unlock(); + return err; + } + info->user_ptr[0] = rdev; + info->user_ptr[1] = dev; + } + + return 0; +} + +static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb, + struct genl_info *info) +{ + if (info->user_ptr[0]) + cfg80211_unlock_rdev(info->user_ptr[0]); + if (info->user_ptr[1]) + dev_put(info->user_ptr[1]); + if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) + rtnl_unlock(); +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -5212,12 +4450,14 @@ static struct genl_ops nl80211_ops[] = { .dumpit = nl80211_dump_wiphy, .policy = nl80211_policy, /* can be retrieved by unprivileged users */ + .internal_flags = NL80211_FLAG_NEED_WIPHY, }, { .cmd = NL80211_CMD_SET_WIPHY, .doit = nl80211_set_wiphy, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_INTERFACE, @@ -5225,90 +4465,119 @@ static struct genl_ops nl80211_ops[] = { .dumpit = nl80211_dump_interface, .policy = nl80211_policy, /* can be retrieved by unprivileged users */ + .internal_flags = NL80211_FLAG_NEED_NETDEV, }, { .cmd = NL80211_CMD_SET_INTERFACE, .doit = nl80211_set_interface, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_NEW_INTERFACE, .doit = nl80211_new_interface, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_WIPHY | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEL_INTERFACE, .doit = nl80211_del_interface, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_KEY, .doit = nl80211_get_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_KEY, .doit = nl80211_set_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_NEW_KEY, .doit = nl80211_new_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEL_KEY, .doit = nl80211_del_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_BEACON, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, .doit = nl80211_addset_beacon, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_NEW_BEACON, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, .doit = nl80211_addset_beacon, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEL_BEACON, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, .doit = nl80211_del_beacon, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_STATION, .doit = nl80211_get_station, .dumpit = nl80211_dump_station, .policy = nl80211_policy, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_STATION, .doit = nl80211_set_station, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_NEW_STATION, .doit = nl80211_new_station, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEL_STATION, .doit = nl80211_del_station, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_MPATH, @@ -5316,30 +4585,40 @@ static struct genl_ops nl80211_ops[] = { .dumpit = nl80211_dump_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_MPATH, .doit = nl80211_set_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_NEW_MPATH, .doit = nl80211_new_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEL_MPATH, .doit = nl80211_del_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_BSS, .doit = nl80211_set_bss, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_REG, @@ -5364,18 +4643,24 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_get_mesh_params, .policy = nl80211_policy, /* can be retrieved by unprivileged users */ + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_MESH_PARAMS, .doit = nl80211_set_mesh_params, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_TRIGGER_SCAN, .doit = nl80211_trigger_scan, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_SCAN, @@ -5387,36 +4672,48 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_authenticate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_ASSOCIATE, .doit = nl80211_associate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEAUTHENTICATE, .doit = nl80211_deauthenticate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DISASSOCIATE, .doit = nl80211_disassociate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_JOIN_IBSS, .doit = nl80211_join_ibss, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_LEAVE_IBSS, .doit = nl80211_leave_ibss, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, #ifdef CONFIG_NL80211_TESTMODE { @@ -5424,6 +4721,8 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_testmode_do, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_WIPHY | + NL80211_FLAG_NEED_RTNL, }, #endif { @@ -5431,18 +4730,24 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_connect, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DISCONNECT, .doit = nl80211_disconnect, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_WIPHY_NETNS, .doit = nl80211_wiphy_netns, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_WIPHY | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_SURVEY, @@ -5454,72 +4759,96 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_setdel_pmksa, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_DEL_PMKSA, .doit = nl80211_setdel_pmksa, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_FLUSH_PMKSA, .doit = nl80211_flush_pmksa, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, .doit = nl80211_remain_on_channel, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, .doit = nl80211_cancel_remain_on_channel, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, .doit = nl80211_set_tx_bitrate_mask, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_REGISTER_FRAME, .doit = nl80211_register_mgmt, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_FRAME, .doit = nl80211_tx_mgmt, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_POWER_SAVE, .doit = nl80211_set_power_save, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_GET_POWER_SAVE, .doit = nl80211_get_power_save, .policy = nl80211_policy, /* can be retrieved by unprivileged users */ + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_CQM, .doit = nl80211_set_cqm, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_CHANNEL, .doit = nl80211_set_channel, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, { .cmd = NL80211_CMD_SET_WDS_PEER, -- cgit v1.2.3 From 41265714810e20d91ddd7aaca30043b0f12190ad Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 4 Oct 2010 21:14:05 +0200 Subject: nl80211: use generic check for netif_running Use a new flag that requires the netdev to be UP and use it to check instead of coding the check into all functions that require it. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 97 +++++++++++++++----------------------------------- 1 file changed, 28 insertions(+), 69 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index a96da47d0640..ca8d04cb172f 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -411,9 +411,6 @@ static int nl80211_key_allowed(struct wireless_dev *wdev) { ASSERT_WDEV_LOCK(wdev); - if (!netif_running(wdev->netdev)) - return -ENETDOWN; - switch (wdev->iftype) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: @@ -2083,11 +2080,6 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) goto out; } - if (!netif_running(dev)) { - err = -ENETDOWN; - goto out; - } - err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms); out: @@ -2301,9 +2293,6 @@ static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop); } @@ -2329,9 +2318,6 @@ static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop); } @@ -2823,9 +2809,6 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) if (!rdev->ops->scan) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - if (rdev->scan_req) return -EBUSY; @@ -3296,9 +3279,6 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); chan = ieee80211_get_channel(&rdev->wiphy, nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); @@ -3429,9 +3409,6 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); chan = ieee80211_get_channel(&rdev->wiphy, @@ -3493,9 +3470,6 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); @@ -3540,9 +3514,6 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); @@ -3596,9 +3567,6 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - wiphy = &rdev->wiphy; if (info->attrs[NL80211_ATTR_MAC]) @@ -3673,9 +3641,6 @@ static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - return cfg80211_leave_ibss(rdev, dev, false); } @@ -3826,9 +3791,6 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - wiphy = &rdev->wiphy; if (info->attrs[NL80211_ATTR_MAC]) @@ -3881,9 +3843,6 @@ static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - return cfg80211_disconnect(rdev, dev, reason, true); } @@ -3998,9 +3957,6 @@ static int nl80211_remain_on_channel(struct sk_buff *skb, if (!rdev->ops->remain_on_channel) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { channel_type = nla_get_u32( info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); @@ -4060,9 +4016,6 @@ static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, if (!rdev->ops->cancel_remain_on_channel) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie); @@ -4207,9 +4160,6 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) return -EOPNOTSUPP; - if (!netif_running(dev)) - return -ENETDOWN; - if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { channel_type = nla_get_u32( info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); @@ -4398,6 +4348,9 @@ out: #define NL80211_FLAG_NEED_WIPHY 0x01 #define NL80211_FLAG_NEED_NETDEV 0x02 #define NL80211_FLAG_NEED_RTNL 0x04 +#define NL80211_FLAG_CHECK_NETDEV_UP 0x08 +#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ + NL80211_FLAG_CHECK_NETDEV_UP) static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, struct genl_info *info) @@ -4425,6 +4378,12 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, rtnl_unlock(); return err; } + if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && + !netif_running(dev)) { + if (rtnl) + rtnl_unlock(); + return -ENETDOWN; + } info->user_ptr[0] = rdev; info->user_ptr[1] = dev; } @@ -4504,7 +4463,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_set_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4512,7 +4471,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_new_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4520,7 +4479,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_del_key, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4568,7 +4527,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_new_station, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4585,7 +4544,7 @@ static struct genl_ops nl80211_ops[] = { .dumpit = nl80211_dump_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4593,7 +4552,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_set_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4601,7 +4560,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_new_mpath, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4659,7 +4618,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_trigger_scan, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4672,7 +4631,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_authenticate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4680,7 +4639,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_associate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4688,7 +4647,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_deauthenticate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4696,7 +4655,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_disassociate, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4704,7 +4663,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_join_ibss, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4712,7 +4671,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_leave_ibss, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, #ifdef CONFIG_NL80211_TESTMODE @@ -4730,7 +4689,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_connect, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4738,7 +4697,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_disconnect, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4783,7 +4742,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_remain_on_channel, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4791,7 +4750,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_cancel_remain_on_channel, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { @@ -4815,7 +4774,7 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_tx_mgmt, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = NL80211_FLAG_NEED_NETDEV | + .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | NL80211_FLAG_NEED_RTNL, }, { -- cgit v1.2.3 From 6774889314ba507483e63c014fcb81adfc127202 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 4 Oct 2010 21:14:06 +0200 Subject: nl80211: reduce dumping boilerplate Consolidate boilerplate code needed for .dumpit calls operating on netdevs. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 151 +++++++++++++++++++------------------------------ 1 file changed, 59 insertions(+), 92 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ca8d04cb172f..0c9497170f1f 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -198,6 +198,47 @@ static int nl80211_get_ifidx(struct netlink_callback *cb) return res; } +static int nl80211_prepare_netdev_dump(struct sk_buff *skb, + struct netlink_callback *cb, + struct cfg80211_registered_device **rdev, + struct net_device **dev) +{ + int ifidx = cb->args[0]; + int err; + + if (!ifidx) + ifidx = nl80211_get_ifidx(cb); + if (ifidx < 0) + return ifidx; + + cb->args[0] = ifidx; + + rtnl_lock(); + + *dev = __dev_get_by_index(sock_net(skb->sk), ifidx); + if (!*dev) { + err = -ENODEV; + goto out_rtnl; + } + + *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); + if (IS_ERR(dev)) { + err = PTR_ERR(dev); + goto out_rtnl; + } + + return 0; + out_rtnl: + rtnl_unlock(); + return err; +} + +static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev) +{ + cfg80211_unlock_rdev(rdev); + rtnl_unlock(); +} + /* IE validation */ static bool is_valid_ie_attr(const struct nlattr *attr) { @@ -1796,28 +1837,12 @@ static int nl80211_dump_station(struct sk_buff *skb, struct cfg80211_registered_device *dev; struct net_device *netdev; u8 mac_addr[ETH_ALEN]; - int ifidx = cb->args[0]; int sta_idx = cb->args[1]; int err; - if (!ifidx) - ifidx = nl80211_get_ifidx(cb); - if (ifidx < 0) - return ifidx; - - rtnl_lock(); - - netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); - if (!netdev) { - err = -ENODEV; - goto out_rtnl; - } - - dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); - if (IS_ERR(dev)) { - err = PTR_ERR(dev); - goto out_rtnl; - } + err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); + if (err) + return err; if (!dev->ops->dump_station) { err = -EOPNOTSUPP; @@ -1847,9 +1872,7 @@ static int nl80211_dump_station(struct sk_buff *skb, cb->args[1] = sta_idx; err = skb->len; out_err: - cfg80211_unlock_rdev(dev); - out_rtnl: - rtnl_unlock(); + nl80211_finish_netdev_dump(dev); return err; } @@ -2169,28 +2192,12 @@ static int nl80211_dump_mpath(struct sk_buff *skb, struct net_device *netdev; u8 dst[ETH_ALEN]; u8 next_hop[ETH_ALEN]; - int ifidx = cb->args[0]; int path_idx = cb->args[1]; int err; - if (!ifidx) - ifidx = nl80211_get_ifidx(cb); - if (ifidx < 0) - return ifidx; - - rtnl_lock(); - - netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); - if (!netdev) { - err = -ENODEV; - goto out_rtnl; - } - - dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); - if (IS_ERR(dev)) { - err = PTR_ERR(dev); - goto out_rtnl; - } + err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); + if (err) + return err; if (!dev->ops->dump_mpath) { err = -EOPNOTSUPP; @@ -2224,10 +2231,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb, cb->args[1] = path_idx; err = skb->len; out_err: - cfg80211_unlock_rdev(dev); - out_rtnl: - rtnl_unlock(); - + nl80211_finish_netdev_dump(dev); return err; } @@ -3034,25 +3038,12 @@ static int nl80211_dump_scan(struct sk_buff *skb, struct net_device *dev; struct cfg80211_internal_bss *scan; struct wireless_dev *wdev; - int ifidx = cb->args[0]; int start = cb->args[1], idx = 0; int err; - if (!ifidx) - ifidx = nl80211_get_ifidx(cb); - if (ifidx < 0) - return ifidx; - cb->args[0] = ifidx; - - dev = dev_get_by_index(sock_net(skb->sk), ifidx); - if (!dev) - return -ENODEV; - - rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); - if (IS_ERR(rdev)) { - err = PTR_ERR(rdev); - goto out_put_netdev; - } + err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev); + if (err) + return err; wdev = dev->ieee80211_ptr; @@ -3068,21 +3059,17 @@ static int nl80211_dump_scan(struct sk_buff *skb, cb->nlh->nlmsg_seq, NLM_F_MULTI, rdev, wdev, scan) < 0) { idx--; - goto out; + break; } } - out: spin_unlock_bh(&rdev->bss_lock); wdev_unlock(wdev); cb->args[1] = idx; - err = skb->len; - cfg80211_unlock_rdev(rdev); - out_put_netdev: - dev_put(dev); + nl80211_finish_netdev_dump(rdev); - return err; + return skb->len; } static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, @@ -3130,29 +3117,12 @@ static int nl80211_dump_survey(struct sk_buff *skb, struct survey_info survey; struct cfg80211_registered_device *dev; struct net_device *netdev; - int ifidx = cb->args[0]; int survey_idx = cb->args[1]; int res; - if (!ifidx) - ifidx = nl80211_get_ifidx(cb); - if (ifidx < 0) - return ifidx; - cb->args[0] = ifidx; - - rtnl_lock(); - - netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); - if (!netdev) { - res = -ENODEV; - goto out_rtnl; - } - - dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx); - if (IS_ERR(dev)) { - res = PTR_ERR(dev); - goto out_rtnl; - } + res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev); + if (res) + return res; if (!dev->ops->dump_survey) { res = -EOPNOTSUPP; @@ -3180,10 +3150,7 @@ static int nl80211_dump_survey(struct sk_buff *skb, cb->args[1] = survey_idx; res = skb->len; out_err: - cfg80211_unlock_rdev(dev); - out_rtnl: - rtnl_unlock(); - + nl80211_finish_netdev_dump(dev); return res; } -- cgit v1.2.3 From e31b82136d1adc7a599b6e99d3321e5831841f5a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 5 Oct 2010 19:39:30 +0200 Subject: cfg80211/mac80211: allow per-station GTKs This adds API to allow adding per-station GTKs, updates mac80211 to support it, and also allows drivers to remove a key from hwaccel again when this may be necessary due to multiple GTKs. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- drivers/net/wireless/iwmc3200wifi/cfg80211.c | 7 +- drivers/net/wireless/libertas/cfg.c | 4 +- drivers/net/wireless/rndis_wlan.c | 12 ++-- include/linux/nl80211.h | 12 ++++ include/net/cfg80211.h | 9 ++- include/net/mac80211.h | 24 +++++++ net/mac80211/cfg.c | 32 +++++++--- net/mac80211/ieee80211_i.h | 2 - net/mac80211/key.c | 95 ++++++++++++++++++---------- net/mac80211/key.h | 3 + net/mac80211/rx.c | 41 +++++++----- net/mac80211/sta_info.c | 10 +-- net/mac80211/sta_info.h | 6 +- net/mac80211/tx.c | 2 +- net/wireless/core.h | 2 +- net/wireless/ibss.c | 2 +- net/wireless/nl80211.c | 87 ++++++++++++++++++++++--- net/wireless/sme.c | 2 +- net/wireless/util.c | 12 +++- net/wireless/wext-compat.c | 38 +++++++---- 20 files changed, 293 insertions(+), 109 deletions(-) (limited to 'net/wireless') diff --git a/drivers/net/wireless/iwmc3200wifi/cfg80211.c b/drivers/net/wireless/iwmc3200wifi/cfg80211.c index 60619678f4ec..c6c0eff9b5ed 100644 --- a/drivers/net/wireless/iwmc3200wifi/cfg80211.c +++ b/drivers/net/wireless/iwmc3200wifi/cfg80211.c @@ -161,7 +161,7 @@ static int iwm_key_init(struct iwm_key *key, u8 key_index, } static int iwm_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, - u8 key_index, const u8 *mac_addr, + u8 key_index, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct iwm_priv *iwm = ndev_to_iwm(ndev); @@ -181,7 +181,8 @@ static int iwm_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, } static int iwm_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, - u8 key_index, const u8 *mac_addr, void *cookie, + u8 key_index, bool pairwise, const u8 *mac_addr, + void *cookie, void (*callback)(void *cookie, struct key_params*)) { @@ -206,7 +207,7 @@ static int iwm_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, static int iwm_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev, - u8 key_index, const u8 *mac_addr) + u8 key_index, bool pairwise, const u8 *mac_addr) { struct iwm_priv *iwm = ndev_to_iwm(ndev); struct iwm_key *key = &iwm->keys[key_index]; diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c index cb3b855d949c..1dc44bc6511f 100644 --- a/drivers/net/wireless/libertas/cfg.c +++ b/drivers/net/wireless/libertas/cfg.c @@ -1438,7 +1438,7 @@ static int lbs_cfg_set_default_key(struct wiphy *wiphy, static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev, - u8 idx, const u8 *mac_addr, + u8 idx, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct lbs_private *priv = wiphy_priv(wiphy); @@ -1498,7 +1498,7 @@ static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev, static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr) + u8 key_index, bool pairwise, const u8 *mac_addr) { lbs_deb_enter(LBS_DEB_CFG80211); diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 719573bbbf81..71b5971da597 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -540,11 +540,11 @@ static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type); static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr, - struct key_params *params); + u8 key_index, bool pairwise, const u8 *mac_addr, + struct key_params *params); static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr); + u8 key_index, bool pairwise, const u8 *mac_addr); static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev, u8 key_index); @@ -2308,8 +2308,8 @@ static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev, } static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr, - struct key_params *params) + u8 key_index, bool pairwise, const u8 *mac_addr, + struct key_params *params) { struct rndis_wlan_private *priv = wiphy_priv(wiphy); struct usbnet *usbdev = priv->usbdev; @@ -2344,7 +2344,7 @@ static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev, } static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr) + u8 key_index, bool pairwise, const u8 *mac_addr) { struct rndis_wlan_private *priv = wiphy_priv(wiphy); struct usbnet *usbdev = priv->usbdev; diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index c4efdfa24ed8..e451f176e662 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -801,6 +801,9 @@ enum nl80211_commands { * This is used in association with @NL80211_ATTR_WIPHY_TX_POWER_SETTING * for non-automatic settings. * + * @NL80211_ATTR_SUPPORT_IBSS_RSN: The device supports IBSS RSN, which mostly + * means support for per-station GTKs. + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -968,6 +971,8 @@ enum nl80211_attrs { NL80211_ATTR_CONTROL_PORT_ETHERTYPE, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT, + NL80211_ATTR_SUPPORT_IBSS_RSN, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -1659,11 +1664,14 @@ enum nl80211_auth_type { * @NL80211_KEYTYPE_GROUP: Group (broadcast/multicast) key * @NL80211_KEYTYPE_PAIRWISE: Pairwise (unicast/individual) key * @NL80211_KEYTYPE_PEERKEY: PeerKey (DLS) + * @NUM_NL80211_KEYTYPES: number of defined key types */ enum nl80211_key_type { NL80211_KEYTYPE_GROUP, NL80211_KEYTYPE_PAIRWISE, NL80211_KEYTYPE_PEERKEY, + + NUM_NL80211_KEYTYPES }; /** @@ -1694,6 +1702,9 @@ enum nl80211_wpa_versions { * CCMP keys, each six bytes in little endian * @NL80211_KEY_DEFAULT: flag indicating default key * @NL80211_KEY_DEFAULT_MGMT: flag indicating default management key + * @NL80211_KEY_TYPE: the key type from enum nl80211_key_type, if not + * specified the default depends on whether a MAC address was + * given with the command using the key or not (u32) * @__NL80211_KEY_AFTER_LAST: internal * @NL80211_KEY_MAX: highest key attribute */ @@ -1705,6 +1716,7 @@ enum nl80211_key_attributes { NL80211_KEY_SEQ, NL80211_KEY_DEFAULT, NL80211_KEY_DEFAULT_MGMT, + NL80211_KEY_TYPE, /* keep last */ __NL80211_KEY_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 5f4d8acf7abb..0f77515266b8 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1130,13 +1130,14 @@ struct cfg80211_ops { struct vif_params *params); int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr, + u8 key_index, bool pairwise, const u8 *mac_addr, struct key_params *params); int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr, void *cookie, + u8 key_index, bool pairwise, const u8 *mac_addr, + void *cookie, void (*callback)(void *cookie, struct key_params*)); int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, const u8 *mac_addr); + u8 key_index, bool pairwise, const u8 *mac_addr); int (*set_default_key)(struct wiphy *wiphy, struct net_device *netdev, u8 key_index); @@ -1304,6 +1305,7 @@ struct cfg80211_ops { * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the * control port protocol ethertype. The device also honours the * control_port_no_encrypt flag. + * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. */ enum wiphy_flags { WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), @@ -1314,6 +1316,7 @@ enum wiphy_flags { WIPHY_FLAG_4ADDR_AP = BIT(5), WIPHY_FLAG_4ADDR_STATION = BIT(6), WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), + WIPHY_FLAG_IBSS_RSN = BIT(7), }; struct mac_address { diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 47316a653ae1..33aa2e39147b 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1041,6 +1041,13 @@ enum ieee80211_tkip_key_type { * @IEEE80211_HW_NEED_DTIM_PERIOD: * This device needs to know the DTIM period for the BSS before * associating. + * + * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports + * per-station GTKs as used by IBSS RSN or during fast transition. If + * the device doesn't support per-station GTKs, but can be asked not + * to decrypt group addressed frames, then IBSS RSN support is still + * possible but software crypto will be used. Advertise the wiphy flag + * only in that case. */ enum ieee80211_hw_flags { IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, @@ -1064,6 +1071,7 @@ enum ieee80211_hw_flags { IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, IEEE80211_HW_CONNECTION_MONITOR = 1<<19, IEEE80211_HW_SUPPORTS_CQM_RSSI = 1<<20, + IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21, }; /** @@ -2582,6 +2590,22 @@ void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); void ieee80211_request_smps(struct ieee80211_vif *vif, enum ieee80211_smps_mode smps_mode); +/** + * ieee80211_key_removed - disable hw acceleration for key + * @key_conf: The key hw acceleration should be disabled for + * + * This allows drivers to indicate that the given key has been + * removed from hardware acceleration, due to a new key that + * was added. Don't use this if the key can continue to be used + * for TX, if the key restriction is on RX only it is permitted + * to keep the key for TX only and not call this function. + * + * Due to locking constraints, it may only be called during + * @set_key. This function must be allowed to sleep, and the + * key it tries to disable may still be used until it returns. + */ +void ieee80211_key_removed(struct ieee80211_key_conf *key_conf); + /* Rate control API */ /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 94bf550bd4c9..8b0e874a3d65 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -103,7 +103,7 @@ static int ieee80211_change_iface(struct wiphy *wiphy, } static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, - u8 key_idx, const u8 *mac_addr, + u8 key_idx, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -131,6 +131,9 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, if (IS_ERR(key)) return PTR_ERR(key); + if (pairwise) + key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; + mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { @@ -153,7 +156,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, } static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, - u8 key_idx, const u8 *mac_addr) + u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_sub_if_data *sdata; struct sta_info *sta; @@ -170,10 +173,17 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, if (!sta) goto out_unlock; - if (sta->key) { - ieee80211_key_free(sdata->local, sta->key); - WARN_ON(sta->key); - ret = 0; + if (pairwise) { + if (sta->ptk) { + ieee80211_key_free(sdata->local, sta->ptk); + ret = 0; + } + } else { + if (sta->gtk[key_idx]) { + ieee80211_key_free(sdata->local, + sta->gtk[key_idx]); + ret = 0; + } } goto out_unlock; @@ -195,7 +205,8 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, } static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, - u8 key_idx, const u8 *mac_addr, void *cookie, + u8 key_idx, bool pairwise, const u8 *mac_addr, + void *cookie, void (*callback)(void *cookie, struct key_params *params)) { @@ -203,7 +214,7 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, struct sta_info *sta = NULL; u8 seq[6] = {0}; struct key_params params; - struct ieee80211_key *key; + struct ieee80211_key *key = NULL; u32 iv32; u16 iv16; int err = -ENOENT; @@ -217,7 +228,10 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, if (!sta) goto out; - key = sta->key; + if (pairwise) + key = sta->ptk; + else if (key_idx < NUM_DEFAULT_KEYS) + key = sta->gtk[key_idx]; } else key = sdata->keys[key_idx]; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 76c2b50ec6f8..f0610fa4fbe0 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -549,8 +549,6 @@ struct ieee80211_sub_if_data { struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; unsigned int fragment_next; -#define NUM_DEFAULT_KEYS 4 -#define NUM_DEFAULT_MGMT_KEYS 2 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; struct ieee80211_key *default_key; struct ieee80211_key *default_mgmt_key; diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 6a63d1abd14d..ccd676b2f599 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -68,15 +68,21 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) might_sleep(); - if (!key->local->ops->set_key) { - ret = -EOPNOTSUPP; + if (!key->local->ops->set_key) goto out_unsupported; - } assert_key_lock(key->local); sta = get_sta_for_key(key); + /* + * If this is a per-STA GTK, check if it + * is supported; if not, return. + */ + if (sta && !(key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE) && + !(key->local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)) + goto out_unsupported; + sdata = key->sdata; if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) sdata = container_of(sdata->bss, @@ -85,31 +91,28 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf); - if (!ret) + if (!ret) { key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; + return 0; + } - if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP) + if (ret != -ENOSPC && ret != -EOPNOTSUPP) wiphy_err(key->local->hw.wiphy, "failed to set key (%d, %pM) to hardware (%d)\n", key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); -out_unsupported: - if (ret) { - switch (key->conf.cipher) { - case WLAN_CIPHER_SUITE_WEP40: - case WLAN_CIPHER_SUITE_WEP104: - case WLAN_CIPHER_SUITE_TKIP: - case WLAN_CIPHER_SUITE_CCMP: - case WLAN_CIPHER_SUITE_AES_CMAC: - /* all of these we can do in software */ - ret = 0; - break; - default: - ret = -EINVAL; - } + out_unsupported: + switch (key->conf.cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + case WLAN_CIPHER_SUITE_TKIP: + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_AES_CMAC: + /* all of these we can do in software */ + return 0; + default: + return -EINVAL; } - - return ret; } static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) @@ -147,6 +150,26 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; } +void ieee80211_key_removed(struct ieee80211_key_conf *key_conf) +{ + struct ieee80211_key *key; + + key = container_of(key_conf, struct ieee80211_key, conf); + + might_sleep(); + assert_key_lock(key->local); + + key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; + + /* + * Flush TX path to avoid attempts to use this key + * after this function returns. Until then, drivers + * must be prepared to handle the key. + */ + synchronize_rcu(); +} +EXPORT_SYMBOL_GPL(ieee80211_key_removed); + static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx) { @@ -202,6 +225,7 @@ void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, + bool pairwise, struct ieee80211_key *old, struct ieee80211_key *new) { @@ -210,8 +234,14 @@ static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, if (new) list_add(&new->list, &sdata->key_list); - if (sta) { - rcu_assign_pointer(sta->key, new); + if (sta && pairwise) { + rcu_assign_pointer(sta->ptk, new); + } else if (sta) { + if (old) + idx = old->conf.keyidx; + else + idx = new->conf.keyidx; + rcu_assign_pointer(sta->gtk[idx], new); } else { WARN_ON(new && old && new->conf.keyidx != old->conf.keyidx); @@ -355,6 +385,7 @@ int ieee80211_key_link(struct ieee80211_key *key, { struct ieee80211_key *old_key; int idx, ret; + bool pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE; BUG_ON(!sdata); BUG_ON(!key); @@ -371,13 +402,6 @@ int ieee80211_key_link(struct ieee80211_key *key, */ if (test_sta_flags(sta, WLAN_STA_WME)) key->conf.flags |= IEEE80211_KEY_FLAG_WMM_STA; - - /* - * This key is for a specific sta interface, - * inform the driver that it should try to store - * this key as pairwise key. - */ - key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; } else { if (sdata->vif.type == NL80211_IFTYPE_STATION) { struct sta_info *ap; @@ -399,12 +423,14 @@ int ieee80211_key_link(struct ieee80211_key *key, mutex_lock(&sdata->local->key_mtx); - if (sta) - old_key = sta->key; + if (sta && pairwise) + old_key = sta->ptk; + else if (sta) + old_key = sta->gtk[idx]; else old_key = sdata->keys[idx]; - __ieee80211_key_replace(sdata, sta, old_key, key); + __ieee80211_key_replace(sdata, sta, pairwise, old_key, key); __ieee80211_key_destroy(old_key); ieee80211_debugfs_key_add(key); @@ -423,7 +449,8 @@ static void __ieee80211_key_free(struct ieee80211_key *key) */ if (key->sdata) __ieee80211_key_replace(key->sdata, key->sta, - key, NULL); + key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE, + key, NULL); __ieee80211_key_destroy(key); } diff --git a/net/mac80211/key.h b/net/mac80211/key.h index cb9a4a65cc68..0db1c0f5f697 100644 --- a/net/mac80211/key.h +++ b/net/mac80211/key.h @@ -16,6 +16,9 @@ #include #include +#define NUM_DEFAULT_KEYS 4 +#define NUM_DEFAULT_MGMT_KEYS 2 + #define WEP_IV_LEN 4 #define WEP_ICV_LEN 4 #define ALG_TKIP_KEY_LEN 32 diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index b3e161ffa4b3..b67221def584 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -846,7 +846,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) int keyidx; int hdrlen; ieee80211_rx_result result = RX_DROP_UNUSABLE; - struct ieee80211_key *stakey = NULL; + struct ieee80211_key *sta_ptk = NULL; int mmie_keyidx = -1; __le16 fc; @@ -888,15 +888,15 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) rx->key = NULL; if (rx->sta) - stakey = rcu_dereference(rx->sta->key); + sta_ptk = rcu_dereference(rx->sta->ptk); fc = hdr->frame_control; if (!ieee80211_has_protected(fc)) mmie_keyidx = ieee80211_get_mmie_keyidx(rx->skb); - if (!is_multicast_ether_addr(hdr->addr1) && stakey) { - rx->key = stakey; + if (!is_multicast_ether_addr(hdr->addr1) && sta_ptk) { + rx->key = sta_ptk; if ((status->flag & RX_FLAG_DECRYPTED) && (status->flag & RX_FLAG_IV_STRIPPED)) return RX_CONTINUE; @@ -912,7 +912,10 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) if (mmie_keyidx < NUM_DEFAULT_KEYS || mmie_keyidx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) return RX_DROP_MONITOR; /* unexpected BIP keyidx */ - rx->key = rcu_dereference(rx->sdata->keys[mmie_keyidx]); + if (rx->sta) + rx->key = rcu_dereference(rx->sta->gtk[mmie_keyidx]); + if (!rx->key) + rx->key = rcu_dereference(rx->sdata->keys[mmie_keyidx]); } else if (!ieee80211_has_protected(fc)) { /* * The frame was not protected, so skip decryption. However, we @@ -955,17 +958,25 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) skb_copy_bits(rx->skb, hdrlen + 3, &keyid, 1); keyidx = keyid >> 6; - rx->key = rcu_dereference(rx->sdata->keys[keyidx]); + /* check per-station GTK first, if multicast packet */ + if (is_multicast_ether_addr(hdr->addr1) && rx->sta) + rx->key = rcu_dereference(rx->sta->gtk[keyidx]); - /* - * RSNA-protected unicast frames should always be sent with - * pairwise or station-to-station keys, but for WEP we allow - * using a key index as well. - */ - if (rx->key && rx->key->conf.cipher != WLAN_CIPHER_SUITE_WEP40 && - rx->key->conf.cipher != WLAN_CIPHER_SUITE_WEP104 && - !is_multicast_ether_addr(hdr->addr1)) - rx->key = NULL; + /* if not found, try default key */ + if (!rx->key) { + rx->key = rcu_dereference(rx->sdata->keys[keyidx]); + + /* + * RSNA-protected unicast frames should always be + * sent with pairwise or station-to-station keys, + * but for WEP we allow using a key index as well. + */ + if (rx->key && + rx->key->conf.cipher != WLAN_CIPHER_SUITE_WEP40 && + rx->key->conf.cipher != WLAN_CIPHER_SUITE_WEP104 && + !is_multicast_ether_addr(hdr->addr1)) + rx->key = NULL; + } } if (rx->key) { diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index aeaf2d6fccc8..6d8f897d8763 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -616,7 +616,7 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) struct ieee80211_sub_if_data *sdata; struct sk_buff *skb; unsigned long flags; - int ret; + int ret, i; might_sleep(); @@ -644,10 +644,10 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) if (ret) return ret; - if (sta->key) { - ieee80211_key_free(local, sta->key); - WARN_ON(sta->key); - } + for (i = 0; i < NUM_DEFAULT_KEYS; i++) + ieee80211_key_free(local, sta->gtk[i]); + if (sta->ptk) + ieee80211_key_free(local, sta->ptk); sta->dead = true; diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index cf21a2e8134f..9265acadef32 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -199,7 +199,8 @@ enum plink_state { * @hnext: hash table linked list pointer * @local: pointer to the global information * @sdata: virtual interface this station belongs to - * @key: peer key negotiated with this station, if any + * @ptk: peer key negotiated with this station, if any + * @gtk: group keys negotiated with this station, if any * @rate_ctrl: rate control algorithm reference * @rate_ctrl_priv: rate control private per-STA pointer * @last_tx_rate: rate used for last transmit, to report to userspace as @@ -254,7 +255,8 @@ struct sta_info { struct sta_info *hnext; struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; - struct ieee80211_key *key; + struct ieee80211_key *gtk[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; + struct ieee80211_key *ptk; struct rate_control_ref *rate_ctrl; void *rate_ctrl_priv; spinlock_t lock; diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 258fbdbedbdf..96c594309506 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -532,7 +532,7 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx) if (unlikely(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT)) tx->key = NULL; - else if (tx->sta && (key = rcu_dereference(tx->sta->key))) + else if (tx->sta && (key = rcu_dereference(tx->sta->ptk))) tx->key = key; else if (ieee80211_is_mgmt(hdr->frame_control) && is_multicast_ether_addr(hdr->addr1) && diff --git a/net/wireless/core.h b/net/wireless/core.h index 37580e090a3d..2d1d4c70113c 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -375,7 +375,7 @@ bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev); /* internal helpers */ int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, struct key_params *params, int key_idx, - const u8 *mac_addr); + bool pairwise, const u8 *mac_addr); void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, size_t ie_len, u16 reason, bool from_ap); void cfg80211_sme_scan_done(struct net_device *dev); diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 8cb6e08373b9..f33fbb79437c 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -160,7 +160,7 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) */ if (rdev->ops->del_key) for (i = 0; i < 6; i++) - rdev->ops->del_key(wdev->wiphy, dev, i, NULL); + rdev->ops->del_key(wdev->wiphy, dev, i, false, NULL); if (wdev->current_bss) { cfg80211_unhold_bss(wdev->current_bss); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 0c9497170f1f..8826888cc14e 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -93,6 +93,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, + [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, @@ -168,7 +169,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, }; -/* policy for the attributes */ +/* policy for the key attributes */ static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, [NL80211_KEY_IDX] = { .type = NLA_U8 }, @@ -176,6 +177,7 @@ static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 }, [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, + [NL80211_KEY_TYPE] = { .type = NLA_U32 }, }; /* ifidx get helper */ @@ -306,6 +308,7 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct key_parse { struct key_params p; int idx; + int type; bool def, defmgmt; }; @@ -336,6 +339,12 @@ static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) if (tb[NL80211_KEY_CIPHER]) k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); + if (tb[NL80211_KEY_TYPE]) { + k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); + if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) + return -EINVAL; + } + return 0; } @@ -360,6 +369,12 @@ static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; + if (info->attrs[NL80211_ATTR_KEY_TYPE]) { + k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); + if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) + return -EINVAL; + } + return 0; } @@ -369,6 +384,7 @@ static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) memset(k, 0, sizeof(*k)); k->idx = -1; + k->type = -1; if (info->attrs[NL80211_ATTR_KEY]) err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); @@ -433,7 +449,7 @@ nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, } else if (parse.defmgmt) goto error; err = cfg80211_validate_key_settings(rdev, &parse.p, - parse.idx, NULL); + parse.idx, false, NULL); if (err) goto error; result->params[parse.idx].cipher = parse.p.cipher; @@ -516,6 +532,9 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, dev->wiphy.max_scan_ie_len); + if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) + NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN); + NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES, sizeof(u32) * dev->wiphy.n_cipher_suites, dev->wiphy.cipher_suites); @@ -1446,7 +1465,8 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) int err; struct net_device *dev = info->user_ptr[1]; u8 key_idx = 0; - u8 *mac_addr = NULL; + const u8 *mac_addr = NULL; + bool pairwise; struct get_key_cookie cookie = { .error = 0, }; @@ -1462,6 +1482,17 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + pairwise = !!mac_addr; + if (info->attrs[NL80211_ATTR_KEY_TYPE]) { + u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); + if (kt >= NUM_NL80211_KEYTYPES) + return -EINVAL; + if (kt != NL80211_KEYTYPE_GROUP && + kt != NL80211_KEYTYPE_PAIRWISE) + return -EINVAL; + pairwise = kt == NL80211_KEYTYPE_PAIRWISE; + } + if (!rdev->ops->get_key) return -EOPNOTSUPP; @@ -1482,8 +1513,12 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) if (mac_addr) NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); - err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, mac_addr, - &cookie, get_key_callback); + if (pairwise && mac_addr && + !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) + return -ENOENT; + + err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise, + mac_addr, &cookie, get_key_callback); if (err) goto free_msg; @@ -1553,7 +1588,7 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) int err; struct net_device *dev = info->user_ptr[1]; struct key_parse key; - u8 *mac_addr = NULL; + const u8 *mac_addr = NULL; err = nl80211_parse_key(info, &key); if (err) @@ -1565,16 +1600,31 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + if (key.type == -1) { + if (mac_addr) + key.type = NL80211_KEYTYPE_PAIRWISE; + else + key.type = NL80211_KEYTYPE_GROUP; + } + + /* for now */ + if (key.type != NL80211_KEYTYPE_PAIRWISE && + key.type != NL80211_KEYTYPE_GROUP) + return -EINVAL; + if (!rdev->ops->add_key) return -EOPNOTSUPP; - if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) + if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, + key.type == NL80211_KEYTYPE_PAIRWISE, + mac_addr)) return -EINVAL; wdev_lock(dev->ieee80211_ptr); err = nl80211_key_allowed(dev->ieee80211_ptr); if (!err) err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx, + key.type == NL80211_KEYTYPE_PAIRWISE, mac_addr, &key.p); wdev_unlock(dev->ieee80211_ptr); @@ -1596,13 +1646,32 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) if (info->attrs[NL80211_ATTR_MAC]) mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); + if (key.type == -1) { + if (mac_addr) + key.type = NL80211_KEYTYPE_PAIRWISE; + else + key.type = NL80211_KEYTYPE_GROUP; + } + + /* for now */ + if (key.type != NL80211_KEYTYPE_PAIRWISE && + key.type != NL80211_KEYTYPE_GROUP) + return -EINVAL; + if (!rdev->ops->del_key) return -EOPNOTSUPP; wdev_lock(dev->ieee80211_ptr); err = nl80211_key_allowed(dev->ieee80211_ptr); + + if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && + !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) + err = -ENOENT; + if (!err) - err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, mac_addr); + err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, + key.type == NL80211_KEYTYPE_PAIRWISE, + mac_addr); #ifdef CONFIG_CFG80211_WEXT if (!err) { @@ -3212,6 +3281,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) return err; if (key.idx >= 0) { + if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) + return -EINVAL; if (!key.p.key || !key.p.key_len) return -EINVAL; if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || diff --git a/net/wireless/sme.c b/net/wireless/sme.c index f161b9844542..e17b0bee6bdc 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -698,7 +698,7 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, */ if (rdev->ops->del_key) for (i = 0; i < 6; i++) - rdev->ops->del_key(wdev->wiphy, dev, i, NULL); + rdev->ops->del_key(wdev->wiphy, dev, i, false, NULL); #ifdef CONFIG_CFG80211_WEXT memset(&wrqu, 0, sizeof(wrqu)); diff --git a/net/wireless/util.c b/net/wireless/util.c index fb5448f7d55a..76120aeda57d 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -144,19 +144,25 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy) int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, struct key_params *params, int key_idx, - const u8 *mac_addr) + bool pairwise, const u8 *mac_addr) { int i; if (key_idx > 5) return -EINVAL; + if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) + return -EINVAL; + + if (pairwise && !mac_addr) + return -EINVAL; + /* * Disallow pairwise keys with non-zero index unless it's WEP * (because current deployments use pairwise WEP keys with * non-zero indizes but 802.11i clearly specifies to use zero) */ - if (mac_addr && key_idx && + if (pairwise && key_idx && params->cipher != WLAN_CIPHER_SUITE_WEP40 && params->cipher != WLAN_CIPHER_SUITE_WEP104) return -EINVAL; @@ -677,7 +683,7 @@ void cfg80211_upload_connect_keys(struct wireless_dev *wdev) for (i = 0; i < 6; i++) { if (!wdev->connect_keys->params[i].cipher) continue; - if (rdev->ops->add_key(wdev->wiphy, dev, i, NULL, + if (rdev->ops->add_key(wdev->wiphy, dev, i, false, NULL, &wdev->connect_keys->params[i])) { printk(KERN_ERR "%s: failed to set key %d\n", dev->name, i); diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 7e5c3a45f811..6002265289c6 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -432,14 +432,17 @@ int cfg80211_wext_giwretry(struct net_device *dev, EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry); static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, - struct net_device *dev, const u8 *addr, - bool remove, bool tx_key, int idx, - struct key_params *params) + struct net_device *dev, bool pairwise, + const u8 *addr, bool remove, bool tx_key, + int idx, struct key_params *params) { struct wireless_dev *wdev = dev->ieee80211_ptr; int err, i; bool rejoin = false; + if (pairwise && !addr) + return -EINVAL; + if (!wdev->wext.keys) { wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys), GFP_KERNEL); @@ -478,7 +481,13 @@ static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, __cfg80211_leave_ibss(rdev, wdev->netdev, true); rejoin = true; } - err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr); + + if (!pairwise && addr && + !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) + err = -ENOENT; + else + err = rdev->ops->del_key(&rdev->wiphy, dev, idx, + pairwise, addr); } wdev->wext.connect.privacy = false; /* @@ -507,12 +516,13 @@ static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, if (addr) tx_key = false; - if (cfg80211_validate_key_settings(rdev, params, idx, addr)) + if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr)) return -EINVAL; err = 0; if (wdev->current_bss) - err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params); + err = rdev->ops->add_key(&rdev->wiphy, dev, idx, + pairwise, addr, params); if (err) return err; @@ -563,17 +573,17 @@ static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev, } static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, - struct net_device *dev, const u8 *addr, - bool remove, bool tx_key, int idx, - struct key_params *params) + struct net_device *dev, bool pairwise, + const u8 *addr, bool remove, bool tx_key, + int idx, struct key_params *params) { int err; /* devlist mutex needed for possible IBSS re-join */ mutex_lock(&rdev->devlist_mtx); wdev_lock(dev->ieee80211_ptr); - err = __cfg80211_set_encryption(rdev, dev, addr, remove, - tx_key, idx, params); + err = __cfg80211_set_encryption(rdev, dev, pairwise, addr, + remove, tx_key, idx, params); wdev_unlock(dev->ieee80211_ptr); mutex_unlock(&rdev->devlist_mtx); @@ -635,7 +645,7 @@ int cfg80211_wext_siwencode(struct net_device *dev, else if (!remove) return -EINVAL; - return cfg80211_set_encryption(rdev, dev, NULL, remove, + return cfg80211_set_encryption(rdev, dev, false, NULL, remove, wdev->wext.default_key == -1, idx, ¶ms); } @@ -725,7 +735,9 @@ int cfg80211_wext_siwencodeext(struct net_device *dev, } return cfg80211_set_encryption( - rdev, dev, addr, remove, + rdev, dev, + !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY), + addr, remove, ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, idx, ¶ms); } -- cgit v1.2.3 From d537f5fdfcc9c57c1e3b9fb316a4bed2bf7597e7 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 5 Oct 2010 21:34:11 +0200 Subject: nl80211: fix error in generic netif_running check Yikes! The error return keeps a netdev reference and the rdev mutex locked, fix that! Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 8826888cc14e..9942f0b061ff 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4418,6 +4418,8 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb, } if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && !netif_running(dev)) { + cfg80211_unlock_rdev(rdev); + dev_put(dev); if (rtnl) rtnl_unlock(); return -ENETDOWN; -- cgit v1.2.3 From b206b4ef062d83c0875a085672ed50e8c8b01521 Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Wed, 6 Oct 2010 18:34:12 +0900 Subject: nl80211/mac80211: Add retry and failed transmission count to station info This information is already available in mac80211, we just need to export it via cfg80211 and nl80211. Signed-off-by: Bruno Randolf Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++++ include/net/cfg80211.h | 8 ++++++++ net/mac80211/cfg.c | 4 ++++ net/wireless/nl80211.c | 6 ++++++ 4 files changed, 22 insertions(+) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index e451f176e662..c08709fe36fc 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1137,6 +1137,8 @@ enum nl80211_rate_info { * @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station) * @NL80211_STA_INFO_TX_PACKETS: total transmitted packets (u32, to this * station) + * @NL80211_STA_INFO_TX_RETRIES: total retries (u32, to this station) + * @NL80211_STA_INFO_TX_FAILED: total failed packets (u32, to this station) */ enum nl80211_sta_info { __NL80211_STA_INFO_INVALID, @@ -1150,6 +1152,8 @@ enum nl80211_sta_info { NL80211_STA_INFO_TX_BITRATE, NL80211_STA_INFO_RX_PACKETS, NL80211_STA_INFO_TX_PACKETS, + NL80211_STA_INFO_TX_RETRIES, + NL80211_STA_INFO_TX_FAILED, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 0f77515266b8..e76daaa7dc25 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -401,6 +401,8 @@ struct station_parameters { * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) * @STATION_INFO_RX_PACKETS: @rx_packets filled * @STATION_INFO_TX_PACKETS: @tx_packets filled + * @STATION_INFO_TX_RETRIES: @tx_retries filled + * @STATION_INFO_TX_FAILED: @tx_failed filled */ enum station_info_flags { STATION_INFO_INACTIVE_TIME = 1<<0, @@ -413,6 +415,8 @@ enum station_info_flags { STATION_INFO_TX_BITRATE = 1<<7, STATION_INFO_RX_PACKETS = 1<<8, STATION_INFO_TX_PACKETS = 1<<9, + STATION_INFO_TX_RETRIES = 1<<10, + STATION_INFO_TX_FAILED = 1<<11, }; /** @@ -462,6 +466,8 @@ struct rate_info { * @txrate: current unicast bitrate to this station * @rx_packets: packets received from this station * @tx_packets: packets transmitted to this station + * @tx_retries: cumulative retry counts + * @tx_failed: number of failed transmissions (retries exceeded, no ACK) * @generation: generation number for nl80211 dumps. * This number should increase every time the list of stations * changes, i.e. when a station is added or removed, so that @@ -479,6 +485,8 @@ struct station_info { struct rate_info txrate; u32 rx_packets; u32 tx_packets; + u32 tx_retries; + u32 tx_failed; int generation; }; diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 8b0e874a3d65..2e5a3fb38efe 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -327,6 +327,8 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) STATION_INFO_TX_BYTES | STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS | + STATION_INFO_TX_RETRIES | + STATION_INFO_TX_FAILED | STATION_INFO_TX_BITRATE; sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); @@ -334,6 +336,8 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) sinfo->tx_bytes = sta->tx_bytes; sinfo->rx_packets = sta->rx_packets; sinfo->tx_packets = sta->tx_packets; + sinfo->tx_retries = sta->tx_retry_count; + sinfo->tx_failed = sta->tx_retry_failed; if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 9942f0b061ff..524f55402838 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1890,6 +1890,12 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, if (sinfo->filled & STATION_INFO_TX_PACKETS) NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS, sinfo->tx_packets); + if (sinfo->filled & STATION_INFO_TX_RETRIES) + NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES, + sinfo->tx_retries); + if (sinfo->filled & STATION_INFO_TX_FAILED) + NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED, + sinfo->tx_failed); nla_nest_end(msg, sinfoattr); return genlmsg_end(msg, hdr); -- cgit v1.2.3 From 3207390a8b58bfc1335750f91cf6783c48ca19ca Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 6 Oct 2010 21:18:04 +0200 Subject: cfg80211: fix BSS double-unlinking When multiple interfaces are actively trying to associate with the same BSS, they may both find that the BSS isn't there and then try to unlink it. This can cause errors since the unlinking code can't currently deal with items that have already been unlinked. Normally this doesn't happen as most people don't try to use multiple station interfaces that associate at the same time too. Fix this by using the list entry as a flag to see if the item is still on a list. Cc: stable@kernel.org Reported-by: Ben Greear Tested-by: Hun-Kyi Wynn Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/scan.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 5ca8c7180141..503ebb86ba18 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -650,14 +650,14 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) bss = container_of(pub, struct cfg80211_internal_bss, pub); spin_lock_bh(&dev->bss_lock); + if (!list_empty(&bss->list)) { + list_del_init(&bss->list); + dev->bss_generation++; + rb_erase(&bss->rbn, &dev->bss_tree); - list_del(&bss->list); - dev->bss_generation++; - rb_erase(&bss->rbn, &dev->bss_tree); - + kref_put(&bss->ref, bss_release); + } spin_unlock_bh(&dev->bss_lock); - - kref_put(&bss->ref, bss_release); } EXPORT_SYMBOL(cfg80211_unlink_bss); -- cgit v1.2.3 From 43b19952de54b0fccfcdc5968891ebe550367fe8 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 7 Oct 2010 13:10:30 +0200 Subject: nl80211: use new genl helpers for WDS Bill Jordan's patch to allow setting the WDS peer crossed with my patch removing all the boilerplate code in nl80211, and consequently he didn't make use of it yet. Fix that. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 45 ++++++++++++--------------------------------- 1 file changed, 12 insertions(+), 33 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 524f55402838..4fed1663aba3 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -876,48 +876,25 @@ static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *rdev; - struct wireless_dev *wdev; - struct net_device *dev; + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct net_device *dev = info->user_ptr[1]; + struct wireless_dev *wdev = dev->ieee80211_ptr; u8 *bssid; - int err; if (!info->attrs[NL80211_ATTR_MAC]) return -EINVAL; - rtnl_lock(); - - err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev); - if (err) - goto unlock_rtnl; - - wdev = dev->ieee80211_ptr; - - if (netif_running(dev)) { - err = -EBUSY; - goto out; - } + if (netif_running(dev)) + return -EBUSY; - if (!rdev->ops->set_wds_peer) { - err = -EOPNOTSUPP; - goto out; - } + if (!rdev->ops->set_wds_peer) + return -EOPNOTSUPP; - if (wdev->iftype != NL80211_IFTYPE_WDS) { - err = -EOPNOTSUPP; - goto out; - } + if (wdev->iftype != NL80211_IFTYPE_WDS) + return -EOPNOTSUPP; bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); - err = rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid); - -out: - cfg80211_unlock_rdev(rdev); - dev_put(dev); -unlock_rtnl: - rtnl_unlock(); - - return err; + return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid); } @@ -4860,6 +4837,8 @@ static struct genl_ops nl80211_ops[] = { .doit = nl80211_set_wds_peer, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_NETDEV | + NL80211_FLAG_NEED_RTNL, }, }; -- cgit v1.2.3 From 388ac775be95e510c2095ed6cd59422a5183a9fb Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 7 Oct 2010 13:11:09 +0200 Subject: cfg80211: constify WDS address There's no need for the WDS peer address to not be const, so make it const. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 2 +- net/mac80211/cfg.c | 2 +- net/wireless/nl80211.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index e76daaa7dc25..0778d04b3bbe 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1229,7 +1229,7 @@ struct cfg80211_ops { int (*get_tx_power)(struct wiphy *wiphy, int *dbm); int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, - u8 *addr); + const u8 *addr); void (*rfkill_poll)(struct wiphy *wiphy); diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 2e5a3fb38efe..ecf9b7166ed1 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1363,7 +1363,7 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) } static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, - u8 *addr) + const u8 *addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 4fed1663aba3..882dc921103b 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -879,7 +879,7 @@ static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct net_device *dev = info->user_ptr[1]; struct wireless_dev *wdev = dev->ieee80211_ptr; - u8 *bssid; + const u8 *bssid; if (!info->attrs[NL80211_ATTR_MAC]) return -EINVAL; -- cgit v1.2.3 From 7623225f905263424c7254dc6a07bff083a498dd Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 11 Oct 2010 14:46:52 -0400 Subject: Revert "wireless: Use first phyX name available when registering phy devices." This reverts commit 5a254ffe3ffdfa84fe076009bd8e88da412180d2. The commit failed to take into account that allocated wireless devices (wiphys) are not added into the device list upon allocation, but only when they are registered. Therefore, it opened up a race between allocating and registering a name, so that if two processes allocate and register concurrently ("alloc, alloc, register, register" rather than "alloc, register, alloc, register") the code will attempt to use the same name twice. Signed-off-by: Johannes Berg --- net/wireless/core.c | 54 ++++++++++++++++++++++++----------------------------- 1 file changed, 24 insertions(+), 30 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/core.c b/net/wireless/core.c index 1684ad91763c..9c21ebf9780e 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -178,10 +178,26 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, char *newname) { struct cfg80211_registered_device *rdev2; - int result; + int wiphy_idx, taken = -1, result, digits; assert_cfg80211_lock(); + /* prohibit calling the thing phy%d when %d is not its number */ + sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); + if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { + /* count number of places needed to print wiphy_idx */ + digits = 1; + while (wiphy_idx /= 10) + digits++; + /* + * deny the name if it is phy where is printed + * without leading zeroes. taken == strlen(newname) here + */ + if (taken == strlen(PHY_NAME) + digits) + return -EINVAL; + } + + /* Ignore nop renames */ if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) return 0; @@ -189,7 +205,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, /* Ensure another device does not already have this name. */ list_for_each_entry(rdev2, &cfg80211_rdev_list, list) if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) - return -EEXIST; + return -EINVAL; result = device_rename(&rdev->wiphy.dev, newname); if (result) @@ -304,11 +320,9 @@ static void cfg80211_event_work(struct work_struct *work) struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) { static int wiphy_counter; - int i; - struct cfg80211_registered_device *rdev, *rdev2; + + struct cfg80211_registered_device *rdev; int alloc_size; - char nname[IFNAMSIZ + 1]; - bool found = false; WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); @@ -332,37 +346,17 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { wiphy_counter--; - goto too_many_devs; - } - - /* 64k wiphy devices is enough for anyone! */ - for (i = 0; i < 0xFFFF; i++) { - found = false; - snprintf(nname, sizeof(nname)-1, PHY_NAME "%d", i); - nname[sizeof(nname)-1] = 0; - list_for_each_entry(rdev2, &cfg80211_rdev_list, list) - if (strcmp(nname, dev_name(&rdev2->wiphy.dev)) == 0) { - found = true; - break; - } - - if (!found) - break; - } - - if (unlikely(found)) { -too_many_devs: mutex_unlock(&cfg80211_mutex); - /* ugh, too many devices already! */ + /* ugh, wrapped! */ kfree(rdev); return NULL; } - /* give it a proper name */ - dev_set_name(&rdev->wiphy.dev, "%s", nname); - mutex_unlock(&cfg80211_mutex); + /* give it a proper name */ + dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); + mutex_init(&rdev->mtx); mutex_init(&rdev->devlist_mtx); INIT_LIST_HEAD(&rdev->netdev_list); -- cgit v1.2.3 From 5a5c731aa59cc2c44ca20f45b1a577cd4f5435e2 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Thu, 7 Oct 2010 16:39:20 -0700 Subject: wireless: Set some stats used by /proc/net/wireless (wext) Some stats for /proc/net/wireless (and wext in general) are not being set. This patch addresses a few of those with values easily obtained from mac80211 core. Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- include/net/cfg80211.h | 4 ++++ net/mac80211/cfg.c | 4 +++- net/wireless/wext-compat.c | 4 ++++ 3 files changed, 11 insertions(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 0778d04b3bbe..f920a06f363e 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -403,6 +403,7 @@ struct station_parameters { * @STATION_INFO_TX_PACKETS: @tx_packets filled * @STATION_INFO_TX_RETRIES: @tx_retries filled * @STATION_INFO_TX_FAILED: @tx_failed filled + * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled */ enum station_info_flags { STATION_INFO_INACTIVE_TIME = 1<<0, @@ -417,6 +418,7 @@ enum station_info_flags { STATION_INFO_TX_PACKETS = 1<<9, STATION_INFO_TX_RETRIES = 1<<10, STATION_INFO_TX_FAILED = 1<<11, + STATION_INFO_RX_DROP_MISC = 1<<12, }; /** @@ -468,6 +470,7 @@ struct rate_info { * @tx_packets: packets transmitted to this station * @tx_retries: cumulative retry counts * @tx_failed: number of failed transmissions (retries exceeded, no ACK) + * @rx_dropped_misc: Dropped for un-specified reason. * @generation: generation number for nl80211 dumps. * This number should increase every time the list of stations * changes, i.e. when a station is added or removed, so that @@ -487,6 +490,7 @@ struct station_info { u32 tx_packets; u32 tx_retries; u32 tx_failed; + u32 rx_dropped_misc; int generation; }; diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index ecf9b7166ed1..25fb351e00f8 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -329,7 +329,8 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) STATION_INFO_TX_PACKETS | STATION_INFO_TX_RETRIES | STATION_INFO_TX_FAILED | - STATION_INFO_TX_BITRATE; + STATION_INFO_TX_BITRATE | + STATION_INFO_RX_DROP_MISC; sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); sinfo->rx_bytes = sta->rx_bytes; @@ -338,6 +339,7 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) sinfo->tx_packets = sta->tx_packets; sinfo->tx_retries = sta->tx_retry_count; sinfo->tx_failed = sta->tx_retry_failed; + sinfo->rx_dropped_misc = sta->rx_dropped; if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 6002265289c6..12222ee6ebf2 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -1366,6 +1366,10 @@ struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev) } wstats.qual.updated |= IW_QUAL_NOISE_INVALID; + if (sinfo.filled & STATION_INFO_RX_DROP_MISC) + wstats.discard.misc = sinfo.rx_dropped_misc; + if (sinfo.filled & STATION_INFO_TX_FAILED) + wstats.discard.retries = sinfo.tx_failed; return &wstats; } -- cgit v1.2.3 From 8610c29a2c9f273886b1c31ae4d92c69d4326262 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 9 Oct 2010 02:39:29 +0200 Subject: cfg80211: add channel utilization stats to the survey command Using these, user space can calculate a relative channel utilization with arbitrary intervals by regularly taking snapshots of the survey results. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- include/linux/nl80211.h | 15 +++++++++++++++ include/net/cfg80211.h | 20 ++++++++++++++++++++ net/wireless/nl80211.c | 15 +++++++++++++++ 3 files changed, 50 insertions(+) (limited to 'net/wireless') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index c08709fe36fc..0edb2566c14c 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -1413,6 +1413,16 @@ enum nl80211_reg_rule_flags { * @NL80211_SURVEY_INFO_FREQUENCY: center frequency of channel * @NL80211_SURVEY_INFO_NOISE: noise level of channel (u8, dBm) * @NL80211_SURVEY_INFO_IN_USE: channel is currently being used + * @NL80211_SURVEY_INFO_CHANNEL_TIME: amount of time (in ms) that the radio + * spent on this channel + * @NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY: amount of the time the primary + * channel was sensed busy (either due to activity or energy detect) + * @NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: amount of time the extension + * channel was sensed busy + * @NL80211_SURVEY_INFO_CHANNEL_TIME_RX: amount of time the radio spent + * receiving data + * @NL80211_SURVEY_INFO_CHANNEL_TIME_TX: amount of time the radio spent + * transmitting data * @NL80211_SURVEY_INFO_MAX: highest survey info attribute number * currently defined * @__NL80211_SURVEY_INFO_AFTER_LAST: internal use @@ -1422,6 +1432,11 @@ enum nl80211_survey_info { NL80211_SURVEY_INFO_FREQUENCY, NL80211_SURVEY_INFO_NOISE, NL80211_SURVEY_INFO_IN_USE, + NL80211_SURVEY_INFO_CHANNEL_TIME, + NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, + NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, + NL80211_SURVEY_INFO_CHANNEL_TIME_RX, + NL80211_SURVEY_INFO_CHANNEL_TIME_TX, /* keep last */ __NL80211_SURVEY_INFO_AFTER_LAST, diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f920a06f363e..24d5b5869272 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -294,6 +294,11 @@ struct key_params { * * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in * @SURVEY_INFO_IN_USE: channel is currently being used + * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in + * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in + * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in + * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in + * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in * * Used by the driver to indicate which info in &struct survey_info * it has filled in during the get_survey(). @@ -301,6 +306,11 @@ struct key_params { enum survey_info_flags { SURVEY_INFO_NOISE_DBM = 1<<0, SURVEY_INFO_IN_USE = 1<<1, + SURVEY_INFO_CHANNEL_TIME = 1<<2, + SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, + SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, + SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, + SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, }; /** @@ -310,6 +320,11 @@ enum survey_info_flags { * @filled: bitflag of flags from &enum survey_info_flags * @noise: channel noise in dBm. This and all following fields are * optional + * @channel_time: amount of time in ms the radio spent on the channel + * @channel_time_busy: amount of time the primary channel was sensed busy + * @channel_time_ext_busy: amount of time the extension channel was sensed busy + * @channel_time_rx: amount of time the radio spent receiving data + * @channel_time_tx: amount of time the radio spent transmitting data * * Used by dump_survey() to report back per-channel survey information. * @@ -318,6 +333,11 @@ enum survey_info_flags { */ struct survey_info { struct ieee80211_channel *channel; + u64 channel_time; + u64 channel_time_busy; + u64 channel_time_ext_busy; + u64 channel_time_rx; + u64 channel_time_tx; u32 filled; s8 noise; }; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 882dc921103b..c506241f8637 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3153,6 +3153,21 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq, survey->noise); if (survey->filled & SURVEY_INFO_IN_USE) NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE); + if (survey->filled & SURVEY_INFO_CHANNEL_TIME) + NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, + survey->channel_time); + if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) + NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, + survey->channel_time_busy); + if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) + NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, + survey->channel_time_ext_busy); + if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) + NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, + survey->channel_time_rx); + if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) + NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, + survey->channel_time_tx); nla_nest_end(msg, infoattr); -- cgit v1.2.3 From cfd8e12f42746df396ecbdf7a1d8e92e8e4dbb97 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Mon, 11 Oct 2010 10:28:59 -0700 Subject: wireless: Print wiphy name in sysfs. The index cannot be used to reliably reconstruct a phy name, so explicitly add the phy name to sysfs so that scripts can figure out the parent phy device for a particular wireless interface. Signed-off-by: Ben Greear Signed-off-by: John W. Linville --- net/wireless/sysfs.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c index 74a9e3cce452..4294fa22bb2d 100644 --- a/net/wireless/sysfs.c +++ b/net/wireless/sysfs.c @@ -35,6 +35,14 @@ SHOW_FMT(index, "%d", wiphy_idx); SHOW_FMT(macaddress, "%pM", wiphy.perm_addr); SHOW_FMT(address_mask, "%pM", wiphy.addr_mask); +static ssize_t name_show(struct device *dev, + struct device_attribute *attr, + char *buf) { + struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; + return sprintf(buf, "%s\n", dev_name(&wiphy->dev)); +} + + static ssize_t addresses_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -57,6 +65,7 @@ static struct device_attribute ieee80211_dev_attrs[] = { __ATTR_RO(macaddress), __ATTR_RO(address_mask), __ATTR_RO(addresses), + __ATTR_RO(name), {} }; -- cgit v1.2.3 From 271733cf844a2f5f186ef3b40c26d6397b71039a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 13 Oct 2010 12:06:23 +0200 Subject: cfg80211: notify drivers about frame registrations Drivers may need to adjust their filters according to frame registrations, so notify them about them. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 7 +++++++ net/wireless/mlme.c | 23 ++++++++++++++++++++--- 2 files changed, 27 insertions(+), 3 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 24d5b5869272..2a7936d7851d 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1147,6 +1147,9 @@ struct cfg80211_pmksa { * allows the driver to adjust the dynamic ps timeout value. * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. * + * @mgmt_frame_register: Notify driver that a management frame type was + * registered. Note that this callback may not sleep, and cannot run + * concurrently with itself. */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -1297,6 +1300,10 @@ struct cfg80211_ops { int (*set_cqm_rssi_config)(struct wiphy *wiphy, struct net_device *dev, s32 rssi_thold, u32 rssi_hyst); + + void (*mgmt_frame_register)(struct wiphy *wiphy, + struct net_device *dev, + u16 frame_type, bool reg); }; /* diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index caf11a427507..26838d903b9a 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -764,6 +764,8 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, u16 frame_type, const u8 *match_data, int match_len) { + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); struct cfg80211_mgmt_registration *reg, *nreg; int err = 0; u16 mgmt_type; @@ -810,22 +812,37 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, nreg->frame_type = cpu_to_le16(frame_type); list_add(&nreg->list, &wdev->mgmt_registrations); + if (rdev->ops->mgmt_frame_register) + rdev->ops->mgmt_frame_register(wiphy, wdev->netdev, + frame_type, true); + out: spin_unlock_bh(&wdev->mgmt_registrations_lock); + return err; } void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid) { + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); struct cfg80211_mgmt_registration *reg, *tmp; spin_lock_bh(&wdev->mgmt_registrations_lock); list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) { - if (reg->nlpid == nlpid) { - list_del(®->list); - kfree(reg); + if (reg->nlpid != nlpid) + continue; + + if (rdev->ops->mgmt_frame_register) { + u16 frame_type = le16_to_cpu(reg->frame_type); + + rdev->ops->mgmt_frame_register(wiphy, wdev->netdev, + frame_type, false); } + + list_del(®->list); + kfree(reg); } spin_unlock_bh(&wdev->mgmt_registrations_lock); -- cgit v1.2.3 From 9ebad4ab87f2ffa6eca825327721e647c7457264 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 14 Oct 2010 13:41:35 +0200 Subject: radiotap: fix vendor namespace parsing There's a bug with radiotap vendor namespace parsing if you don't register for the given namespace extensions. Fix this by passing only the unknown vendor namespaces and the registered data to frontends, but not both. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/radiotap.c | 58 +++++++++++++++++++++++++++---------------------- 1 file changed, 32 insertions(+), 26 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/radiotap.c b/net/wireless/radiotap.c index c774bc0f155e..dbe35e138e94 100644 --- a/net/wireless/radiotap.c +++ b/net/wireless/radiotap.c @@ -201,7 +201,7 @@ int ieee80211_radiotap_iterator_next( { while (1) { int hit = 0; - int pad, align, size, subns, vnslen; + int pad, align, size, subns; uint32_t oui; /* if no more EXT bits, that's it */ @@ -261,6 +261,27 @@ int ieee80211_radiotap_iterator_next( if (pad) iterator->_arg += align - pad; + if (iterator->_arg_index % 32 == IEEE80211_RADIOTAP_VENDOR_NAMESPACE) { + int vnslen; + + if ((unsigned long)iterator->_arg + size - + (unsigned long)iterator->_rtheader > + (unsigned long)iterator->_max_length) + return -EINVAL; + + oui = (*iterator->_arg << 16) | + (*(iterator->_arg + 1) << 8) | + *(iterator->_arg + 2); + subns = *(iterator->_arg + 3); + + find_ns(iterator, oui, subns); + + vnslen = get_unaligned_le16(iterator->_arg + 4); + iterator->_next_ns_data = iterator->_arg + size + vnslen; + if (!iterator->current_namespace) + size += vnslen; + } + /* * this is what we will return to user, but we need to * move on first so next call has something fresh to test @@ -287,40 +308,25 @@ int ieee80211_radiotap_iterator_next( /* these special ones are valid in each bitmap word */ switch (iterator->_arg_index % 32) { case IEEE80211_RADIOTAP_VENDOR_NAMESPACE: - iterator->_bitmap_shifter >>= 1; - iterator->_arg_index++; - iterator->_reset_on_ext = 1; - vnslen = get_unaligned_le16(iterator->this_arg + 4); - iterator->_next_ns_data = iterator->_arg + vnslen; - oui = (*iterator->this_arg << 16) | - (*(iterator->this_arg + 1) << 8) | - *(iterator->this_arg + 2); - subns = *(iterator->this_arg + 3); - - find_ns(iterator, oui, subns); - iterator->is_radiotap_ns = 0; - /* allow parsers to show this information */ + /* + * If parser didn't register this vendor + * namespace with us, allow it to show it + * as 'raw. Do do that, set argument index + * to vendor namespace. + */ iterator->this_arg_index = IEEE80211_RADIOTAP_VENDOR_NAMESPACE; - iterator->this_arg_size += vnslen; - if ((unsigned long)iterator->this_arg + - iterator->this_arg_size - - (unsigned long)iterator->_rtheader > - (unsigned long)(unsigned long)iterator->_max_length) - return -EINVAL; - hit = 1; - break; + if (!iterator->current_namespace) + hit = 1; + goto next_entry; case IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE: - iterator->_bitmap_shifter >>= 1; - iterator->_arg_index++; - iterator->_reset_on_ext = 1; iterator->current_namespace = &radiotap_ns; iterator->is_radiotap_ns = 1; - break; + goto next_entry; case IEEE80211_RADIOTAP_EXT: /* * bit 31 was set, there is more -- cgit v1.2.3