From 691597cb26f236ac7471f1adf925a134c86799d6 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sun, 19 Apr 2009 19:57:45 +0200 Subject: cfg80211/mac80211: move wext SIWMLME into cfg80211 Since we have ->deauth and ->disassoc we can support the wext SIWMLME call directly without driver wext handlers. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/wext-compat.c | 46 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-) (limited to 'net/wireless/wext-compat.c') diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 0fd1db6e95bb..6fd7bf7b4481 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -206,7 +207,6 @@ int cfg80211_wext_giwrange(struct net_device *dev, range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 | IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP; - for (band = 0; band < IEEE80211_NUM_BANDS; band ++) { int i; struct ieee80211_supported_band *sband; @@ -241,3 +241,47 @@ int cfg80211_wext_giwrange(struct net_device *dev, return 0; } EXPORT_SYMBOL(cfg80211_wext_giwrange); + +int cfg80211_wext_siwmlme(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct iw_mlme *mlme = (struct iw_mlme *)extra; + struct cfg80211_registered_device *rdev; + union { + struct cfg80211_disassoc_request disassoc; + struct cfg80211_deauth_request deauth; + } cmd; + + if (!wdev) + return -EOPNOTSUPP; + + rdev = wiphy_to_dev(wdev->wiphy); + + if (wdev->iftype != NL80211_IFTYPE_STATION) + return -EINVAL; + + if (mlme->addr.sa_family != ARPHRD_ETHER) + return -EINVAL; + + memset(&cmd, 0, sizeof(cmd)); + + switch (mlme->cmd) { + case IW_MLME_DEAUTH: + if (!rdev->ops->deauth) + return -EOPNOTSUPP; + cmd.deauth.peer_addr = mlme->addr.sa_data; + cmd.deauth.reason_code = mlme->reason_code; + return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth); + case IW_MLME_DISASSOC: + if (!rdev->ops->disassoc) + return -EOPNOTSUPP; + cmd.disassoc.peer_addr = mlme->addr.sa_data; + cmd.disassoc.reason_code = mlme->reason_code; + return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc); + default: + return -EOPNOTSUPP; + } +} +EXPORT_SYMBOL(cfg80211_wext_siwmlme); -- cgit v1.2.3 From 04a773ade0680d862b479d7219973df60f7a3834 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sun, 19 Apr 2009 21:24:32 +0200 Subject: cfg80211/nl80211: add IBSS API This adds IBSS API along with (preliminary) wext handlers. The wext handlers can only do IBSS so you need to call them from your own wext handlers if the mode is IBSS. The nl80211 API requires * an SSID * a channel (frequency) for the case that a new IBSS has to be created It optionally supports * a flag to fix the channel * a fixed BSSID The cfg80211 code also takes care to leave the IBSS before the netdev is set down. If wireless extensions are used, it also caches values when the interface is down and instructs the driver to join when the interface is set up. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 18 +++ include/net/cfg80211.h | 72 +++++++++ include/net/wireless.h | 14 ++ net/wireless/Makefile | 2 +- net/wireless/core.c | 16 ++ net/wireless/core.h | 8 + net/wireless/ibss.c | 360 +++++++++++++++++++++++++++++++++++++++++++++ net/wireless/nl80211.c | 182 +++++++++++++++++++++-- net/wireless/nl80211.h | 4 + net/wireless/wext-compat.c | 30 ++++ 10 files changed, 693 insertions(+), 13 deletions(-) create mode 100644 net/wireless/ibss.c (limited to 'net/wireless/wext-compat.c') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index c01423888db9..25ce3e42bd10 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -223,6 +223,15 @@ * %NL80211_ATTR_KEY_SEQ to indicate the TSC value of the frame; this * event matches with MLME-MICHAELMICFAILURE.indication() primitive * + * @NL80211_CMD_JOIN_IBSS: Join a new IBSS -- given at least an SSID and a + * FREQ attribute (for the initial frequency if no peer can be found) + * and optionally a MAC (as BSSID) and FREQ_FIXED attribute if those + * should be fixed rather than automatically determined. Can only be + * executed on a network interface that is UP, and fixed BSSID/FREQ + * may be rejected. + * @NL80211_CMD_LEAVE_IBSS: Leave the IBSS -- no special arguments, the IBSS is + * determined by the network interface. + * * @NL80211_CMD_MAX: highest used command number * @__NL80211_CMD_AFTER_LAST: internal use */ @@ -288,6 +297,9 @@ enum nl80211_commands { NL80211_CMD_REG_BEACON_HINT, + NL80211_CMD_JOIN_IBSS, + NL80211_CMD_LEAVE_IBSS, + /* add new commands above here */ /* used to define NL80211_CMD_MAX below */ @@ -456,6 +468,9 @@ enum nl80211_commands { * @NL80211_ATTR_CIPHER_SUITES: a set of u32 values indicating the supported * cipher suites * + * @NL80211_ATTR_FREQ_FIXED: a flag indicating the IBSS should not try to look + * for other networks on different channels + * * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use */ @@ -547,6 +562,9 @@ enum nl80211_attrs { NL80211_ATTR_FREQ_BEFORE, NL80211_ATTR_FREQ_AFTER, + + NL80211_ATTR_FREQ_FIXED, + /* 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 019a41efa0bb..5287a3e56e7c 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -657,6 +657,31 @@ struct cfg80211_disassoc_request { size_t ie_len; }; +/** + * struct cfg80211_ibss_params - IBSS parameters + * + * This structure defines the IBSS parameters for the join_ibss() + * method. + * + * @ssid: The SSID, will always be non-null. + * @ssid_len: The length of the SSID, will always be non-zero. + * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not + * search for IBSSs with a different BSSID. + * @channel: The channel to use if no IBSS can be found to join. + * @channel_fixed: The channel should be fixed -- do not search for + * IBSSs to join on other channels. + * @ie: information element(s) to include in the beacon + * @ie_len: length of that + */ +struct cfg80211_ibss_params { + u8 *ssid; + u8 *bssid; + struct ieee80211_channel *channel; + u8 *ie; + u8 ssid_len, ie_len; + bool channel_fixed; +}; + /** * struct cfg80211_ops - backend description for wireless configuration * @@ -732,6 +757,11 @@ struct cfg80211_disassoc_request { * @assoc: Request to (re)associate with the specified peer * @deauth: Request to deauthenticate from the specified peer * @disassoc: Request to disassociate from the specified peer + * + * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call + * cfg80211_ibss_joined(), also call that function when changing BSSID due + * to a merge. + * @leave_ibss: Leave the IBSS. */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -817,6 +847,10 @@ struct cfg80211_ops { struct cfg80211_deauth_request *req); int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_disassoc_request *req); + + int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ibss_params *params); + int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); }; /* temporary wext handlers */ @@ -839,6 +873,28 @@ int cfg80211_wext_siwmlme(struct net_device *dev, int cfg80211_wext_giwrange(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *extra); +int cfg80211_ibss_wext_siwfreq(struct net_device *dev, + struct iw_request_info *info, + struct iw_freq *freq, char *extra); +int cfg80211_ibss_wext_giwfreq(struct net_device *dev, + struct iw_request_info *info, + struct iw_freq *freq, char *extra); +int cfg80211_ibss_wext_siwessid(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *ssid); +int cfg80211_ibss_wext_giwessid(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *ssid); +int cfg80211_ibss_wext_siwap(struct net_device *dev, + struct iw_request_info *info, + struct sockaddr *ap_addr, char *extra); +int cfg80211_ibss_wext_giwap(struct net_device *dev, + struct iw_request_info *info, + struct sockaddr *ap_addr, char *extra); + +/* wext helper for now (to be removed) */ +struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, + struct iw_freq *freq); /** * cfg80211_scan_done - notify that scan finished @@ -984,4 +1040,20 @@ void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, enum nl80211_key_type key_type, int key_id, const u8 *tsc); +/** + * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS + * + * @dev: network device + * @bssid: the BSSID of the IBSS joined + * @gfp: allocation flags + * + * This function notifies cfg80211 that the device joined an IBSS or + * switched to a different BSSID. Before this function can be called, + * either a beacon has to have been received from the IBSS, or one of + * the cfg80211_inform_bss{,_frame} functions must have been called + * with the locally generated beacon -- this guarantees that there is + * always a scan result for this IBSS. cfg80211 will handle the rest. + */ +void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); + #endif /* __NET_CFG80211_H */ diff --git a/include/net/wireless.h b/include/net/wireless.h index 44c2642d3c06..abd27b033331 100644 --- a/include/net/wireless.h +++ b/include/net/wireless.h @@ -265,6 +265,8 @@ struct wiphy { * * @wiphy: pointer to hardware description * @iftype: interface type + * @list: (private) + * @netdev (private) */ struct wireless_dev { struct wiphy *wiphy; @@ -273,6 +275,18 @@ struct wireless_dev { /* private to the generic wireless code */ struct list_head list; struct net_device *netdev; + + /* currently used for IBSS - might be rearranged in the future */ + struct cfg80211_bss *current_bss; + u8 bssid[ETH_ALEN]; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + u8 ssid_len; + +#ifdef CONFIG_WIRELESS_EXT + /* wext data */ + struct cfg80211_ibss_params wext; + u8 wext_bssid[ETH_ALEN]; +#endif }; /** diff --git a/net/wireless/Makefile b/net/wireless/Makefile index 6d1e7b27b752..14ea01c4a103 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o -cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o mlme.o +cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o mlme.o ibss.o cfg80211-$(CONFIG_WIRELESS_EXT) += wext-compat.o ccflags-y += -D__CHECK_ENDIAN__ diff --git a/net/wireless/core.c b/net/wireless/core.c index d1f556535f6d..de1ac51ae4e5 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -450,6 +450,22 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, dev->ieee80211_ptr->netdev = dev; mutex_unlock(&rdev->devlist_mtx); break; + case NETDEV_GOING_DOWN: + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) + break; + if (!dev->ieee80211_ptr->ssid_len) + break; + cfg80211_leave_ibss(rdev, dev); + break; + case NETDEV_UP: +#ifdef CONFIG_WIRELESS_EXT + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) + break; + if (!dev->ieee80211_ptr->wext.ssid_len) + break; + cfg80211_join_ibss(rdev, dev, &dev->ieee80211_ptr->wext); + break; +#endif case NETDEV_UNREGISTER: mutex_lock(&rdev->devlist_mtx); if (!list_empty(&dev->ieee80211_ptr->list)) { diff --git a/net/wireless/core.h b/net/wireless/core.h index 02668b02e331..2ef3595fd6e0 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -144,4 +144,12 @@ void cfg80211_bss_expire(struct cfg80211_registered_device *dev); void cfg80211_bss_age(struct cfg80211_registered_device *dev, unsigned long age_secs); +/* IBSS */ +int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct cfg80211_ibss_params *params); +void cfg80211_clear_ibss(struct net_device *dev); +int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, + struct net_device *dev); + #endif /* __NET_WIRELESS_CORE_H */ diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c new file mode 100644 index 000000000000..2bf42fdef3a1 --- /dev/null +++ b/net/wireless/ibss.c @@ -0,0 +1,360 @@ +/* + * Some IBSS support code for cfg80211. + * + * Copyright 2009 Johannes Berg + */ + +#include +#include +#include +#include +#include "nl80211.h" + + +void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_bss *bss; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return; + + if (WARN_ON(!wdev->ssid_len)) + return; + + if (memcmp(bssid, wdev->bssid, ETH_ALEN) == 0) + return; + + bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, + wdev->ssid, wdev->ssid_len, + WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); + + if (WARN_ON(!bss)) + return; + + if (wdev->current_bss) { + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(wdev->current_bss); + } + + cfg80211_hold_bss(bss); + wdev->current_bss = bss; + memcpy(wdev->bssid, bssid, ETH_ALEN); + + nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid, gfp); +#ifdef CONFIG_WIRELESS_EXT + memset(&wrqu, 0, sizeof(wrqu)); + memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); +#endif +} +EXPORT_SYMBOL(cfg80211_ibss_joined); + +int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct cfg80211_ibss_params *params) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + int err; + + if (wdev->ssid_len) + return -EALREADY; + +#ifdef CONFIG_WIRELESS_EXT + wdev->wext.channel = params->channel; +#endif + err = rdev->ops->join_ibss(&rdev->wiphy, dev, params); + + if (err) + return err; + + memcpy(wdev->ssid, params->ssid, params->ssid_len); + wdev->ssid_len = params->ssid_len; + + return 0; +} + +void cfg80211_clear_ibss(struct net_device *dev) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + if (wdev->current_bss) { + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(wdev->current_bss); + } + + wdev->current_bss = NULL; + wdev->ssid_len = 0; + memset(wdev->bssid, 0, ETH_ALEN); +} + +int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, + struct net_device *dev) +{ + int err; + + err = rdev->ops->leave_ibss(&rdev->wiphy, dev); + + if (err) + return err; + + cfg80211_clear_ibss(dev); + + return 0; +} + +#ifdef CONFIG_WIRELESS_EXT +static int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev) +{ + enum ieee80211_band band; + int i; + + /* try to find an IBSS channel if none requested ... */ + if (!wdev->wext.channel) { + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + struct ieee80211_supported_band *sband; + struct ieee80211_channel *chan; + + sband = rdev->wiphy.bands[band]; + if (!sband) + continue; + + for (i = 0; i < sband->n_channels; i++) { + chan = &sband->channels[i]; + if (chan->flags & IEEE80211_CHAN_NO_IBSS) + continue; + if (chan->flags & IEEE80211_CHAN_DISABLED) + continue; + wdev->wext.channel = chan; + break; + } + + if (wdev->wext.channel) + break; + } + + if (!wdev->wext.channel) + return -EINVAL; + } + + /* don't join -- SSID is not there */ + if (!wdev->wext.ssid_len) + return 0; + + if (!netif_running(wdev->netdev)) + return 0; + + return cfg80211_join_ibss(wiphy_to_dev(wdev->wiphy), + wdev->netdev, &wdev->wext); +} + +int cfg80211_ibss_wext_siwfreq(struct net_device *dev, + struct iw_request_info *info, + struct iw_freq *freq, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct ieee80211_channel *chan; + int err; + + /* call only for ibss! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return -EINVAL; + + if (!wiphy_to_dev(wdev->wiphy)->ops->join_ibss) + return -EOPNOTSUPP; + + chan = cfg80211_wext_freq(wdev->wiphy, freq); + if (chan && IS_ERR(chan)) + return PTR_ERR(chan); + + if (chan && + (chan->flags & IEEE80211_CHAN_NO_IBSS || + chan->flags & IEEE80211_CHAN_DISABLED)) + return -EINVAL; + + if (wdev->wext.channel == chan) + return 0; + + if (wdev->ssid_len) { + err = cfg80211_leave_ibss(wiphy_to_dev(wdev->wiphy), dev); + if (err) + return err; + } + + if (chan) { + wdev->wext.channel = chan; + wdev->wext.channel_fixed = true; + } else { + /* cfg80211_ibss_wext_join will pick one if needed */ + wdev->wext.channel_fixed = false; + } + + return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev); +} +/* temporary symbol - mark GPL - in the future the handler won't be */ +EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwfreq); + +int cfg80211_ibss_wext_giwfreq(struct net_device *dev, + struct iw_request_info *info, + struct iw_freq *freq, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct ieee80211_channel *chan = NULL; + + /* call only for ibss! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return -EINVAL; + + if (wdev->current_bss) + chan = wdev->current_bss->channel; + else if (wdev->wext.channel) + chan = wdev->wext.channel; + + if (chan) { + freq->m = chan->center_freq; + freq->e = 6; + return 0; + } + + /* no channel if not joining */ + return -EINVAL; +} +/* temporary symbol - mark GPL - in the future the handler won't be */ +EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_giwfreq); + +int cfg80211_ibss_wext_siwessid(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *ssid) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + size_t len = data->length; + int err; + + /* call only for ibss! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return -EINVAL; + + if (!wiphy_to_dev(wdev->wiphy)->ops->join_ibss) + return -EOPNOTSUPP; + + if (wdev->ssid_len) { + err = cfg80211_leave_ibss(wiphy_to_dev(wdev->wiphy), dev); + if (err) + return err; + } + + /* iwconfig uses nul termination in SSID.. */ + if (len > 0 && ssid[len - 1] == '\0') + len--; + + wdev->wext.ssid = wdev->ssid; + memcpy(wdev->wext.ssid, ssid, len); + wdev->wext.ssid_len = len; + + return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev); +} +/* temporary symbol - mark GPL - in the future the handler won't be */ +EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwessid); + +int cfg80211_ibss_wext_giwessid(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *data, char *ssid) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + /* call only for ibss! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return -EINVAL; + + data->flags = 0; + + if (wdev->ssid_len) { + data->flags = 1; + data->length = wdev->ssid_len; + memcpy(ssid, wdev->ssid, data->length); + } else if (wdev->wext.ssid) { + data->flags = 1; + data->length = wdev->wext.ssid_len; + memcpy(ssid, wdev->wext.ssid, data->length); + } + + return 0; +} +/* temporary symbol - mark GPL - in the future the handler won't be */ +EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_giwessid); + +int cfg80211_ibss_wext_siwap(struct net_device *dev, + struct iw_request_info *info, + struct sockaddr *ap_addr, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + u8 *bssid = ap_addr->sa_data; + int err; + + /* call only for ibss! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return -EINVAL; + + if (!wiphy_to_dev(wdev->wiphy)->ops->join_ibss) + return -EOPNOTSUPP; + + if (ap_addr->sa_family != ARPHRD_ETHER) + return -EINVAL; + + /* automatic mode */ + if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) + bssid = NULL; + + /* both automatic */ + if (!bssid && !wdev->wext.bssid) + return 0; + + /* fixed already - and no change */ + if (wdev->wext.bssid && bssid && + compare_ether_addr(bssid, wdev->wext.bssid) == 0) + return 0; + + if (wdev->ssid_len) { + err = cfg80211_leave_ibss(wiphy_to_dev(wdev->wiphy), dev); + if (err) + return err; + } + + if (bssid) { + memcpy(wdev->wext_bssid, bssid, ETH_ALEN); + wdev->wext.bssid = wdev->wext_bssid; + } else + wdev->wext.bssid = NULL; + + return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev); +} +/* temporary symbol - mark GPL - in the future the handler won't be */ +EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwap); + +int cfg80211_ibss_wext_giwap(struct net_device *dev, + struct iw_request_info *info, + struct sockaddr *ap_addr, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + /* call only for ibss! */ + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_ADHOC)) + return -EINVAL; + + ap_addr->sa_family = ARPHRD_ETHER; + + if (wdev->wext.bssid) { + memcpy(ap_addr->sa_data, wdev->wext.bssid, ETH_ALEN); + return 0; + } + + memcpy(ap_addr->sa_data, wdev->bssid, ETH_ALEN); + return 0; +} +/* temporary symbol - mark GPL - in the future the handler won't be */ +EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_giwap); +#endif diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index d2cfde659e76..16f86356ac97 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -116,6 +116,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { .len = IEEE80211_MAX_SSID_LEN }, [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, + [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, }; /* IE validation */ @@ -322,6 +323,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, CMD(assoc, ASSOCIATE); CMD(deauth, DEAUTHENTICATE); CMD(disassoc, DISASSOCIATE); + CMD(join_ibss, JOIN_IBSS); #undef CMD nla_nest_end(msg, nl_cmds); @@ -668,7 +670,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) struct cfg80211_registered_device *drv; struct vif_params params; int err, ifindex; - enum nl80211_iftype type; + enum nl80211_iftype otype, ntype; struct net_device *dev; u32 _flags, *flags = NULL; bool change = false; @@ -682,30 +684,27 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) goto unlock_rtnl; ifindex = dev->ifindex; - type = dev->ieee80211_ptr->iftype; + otype = ntype = dev->ieee80211_ptr->iftype; dev_put(dev); if (info->attrs[NL80211_ATTR_IFTYPE]) { - enum nl80211_iftype ntype; - ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); - if (type != ntype) + if (otype != ntype) change = true; - type = ntype; - if (type > NL80211_IFTYPE_MAX) { + if (ntype > NL80211_IFTYPE_MAX) { err = -EINVAL; goto unlock; } } if (!drv->ops->change_virtual_intf || - !(drv->wiphy.interface_modes & (1 << type))) { + !(drv->wiphy.interface_modes & (1 << ntype))) { err = -EOPNOTSUPP; goto unlock; } if (info->attrs[NL80211_ATTR_MESH_ID]) { - if (type != NL80211_IFTYPE_MESH_POINT) { + if (ntype != NL80211_IFTYPE_MESH_POINT) { err = -EINVAL; goto unlock; } @@ -715,7 +714,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) } if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { - if (type != NL80211_IFTYPE_MONITOR) { + if (ntype != NL80211_IFTYPE_MONITOR) { err = -EINVAL; goto unlock; } @@ -730,12 +729,17 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) if (change) err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, - type, flags, ¶ms); + ntype, flags, ¶ms); else err = 0; dev = __dev_get_by_index(&init_net, ifindex); - WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type)); + WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype)); + + if (dev && !err && (ntype != otype)) { + if (otype == NL80211_IFTYPE_ADHOC) + cfg80211_clear_ibss(dev); + } unlock: cfg80211_put_dev(drv); @@ -3052,6 +3056,114 @@ unlock_rtnl: return err; } +static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + struct cfg80211_ibss_params ibss; + struct wiphy *wiphy; + int err; + + if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) + return -EINVAL; + + if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || + !info->attrs[NL80211_ATTR_SSID] || + !nla_len(info->attrs[NL80211_ATTR_SSID])) + return -EINVAL; + + rtnl_lock(); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + goto unlock_rtnl; + + if (!drv->ops->join_ibss) { + err = -EOPNOTSUPP; + goto out; + } + + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { + err = -EOPNOTSUPP; + goto out; + } + + if (!netif_running(dev)) { + err = -ENETDOWN; + goto out; + } + + wiphy = &drv->wiphy; + memset(&ibss, 0, sizeof(ibss)); + + if (info->attrs[NL80211_ATTR_MAC]) + ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); + ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); + ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); + + if (info->attrs[NL80211_ATTR_IE]) { + ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); + ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); + } + + ibss.channel = ieee80211_get_channel(wiphy, + 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_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; + + err = cfg80211_join_ibss(drv, dev, &ibss); + +out: + cfg80211_put_dev(drv); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + return err; +} + +static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *drv; + struct net_device *dev; + int err; + + rtnl_lock(); + + err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); + if (err) + goto unlock_rtnl; + + if (!drv->ops->leave_ibss) { + err = -EOPNOTSUPP; + goto out; + } + + if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) { + err = -EOPNOTSUPP; + goto out; + } + + if (!netif_running(dev)) { + err = -ENETDOWN; + goto out; + } + + err = cfg80211_leave_ibss(drv, dev); + +out: + cfg80211_put_dev(drv); + dev_put(dev); +unlock_rtnl: + rtnl_unlock(); + return err; +} + static struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -3253,6 +3365,18 @@ static struct genl_ops nl80211_ops[] = { .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, + { + .cmd = NL80211_CMD_JOIN_IBSS, + .doit = nl80211_join_ibss, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, + { + .cmd = NL80211_CMD_LEAVE_IBSS, + .doit = nl80211_leave_ibss, + .policy = nl80211_policy, + .flags = GENL_ADMIN_PERM, + }, }; static struct genl_multicast_group nl80211_mlme_mcgrp = { .name = "mlme", @@ -3466,6 +3590,40 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, NL80211_CMD_DISASSOCIATE); } +void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *bssid, + gfp_t gfp) +{ + struct sk_buff *msg; + void *hdr; + + msg = nlmsg_new(NLMSG_GOODSIZE, gfp); + if (!msg) + return; + + hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); + if (!hdr) { + nlmsg_free(msg); + return; + } + + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx); + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex); + NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid); + + if (genlmsg_end(msg, hdr) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp); + return; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + nlmsg_free(msg); +} + void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, struct net_device *netdev, const u8 *addr, enum nl80211_key_type key_type, int key_id, diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index b3aaa59afa08..17d2d8bfaf75 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -34,4 +34,8 @@ nl80211_send_beacon_hint_event(struct wiphy *wiphy, struct ieee80211_channel *channel_before, struct ieee80211_channel *channel_after); +void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, + struct net_device *netdev, const u8 *bssid, + gfp_t gfp); + #endif /* __NET_WIRELESS_NL80211_H */ diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 6fd7bf7b4481..57eaea26b67a 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -285,3 +285,33 @@ int cfg80211_wext_siwmlme(struct net_device *dev, } } EXPORT_SYMBOL(cfg80211_wext_siwmlme); + + +/** + * cfg80211_wext_freq - get wext frequency for non-"auto" + * @wiphy: the wiphy + * @freq: the wext freq encoding + * + * Returns a channel, %NULL for auto, or an ERR_PTR for errors! + */ +struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, + struct iw_freq *freq) +{ + if (freq->e == 0) { + if (freq->m < 0) + return NULL; + else + return ieee80211_get_channel(wiphy, + ieee80211_channel_to_frequency(freq->m)); + } else { + int i, div = 1000000; + for (i = 0; i < freq->e; i++) + div /= 10; + if (div > 0) + return ieee80211_get_channel(wiphy, freq->m / div); + else + return ERR_PTR(-EINVAL); + } + +} +EXPORT_SYMBOL(cfg80211_wext_freq); -- cgit v1.2.3 From d323655372590c533c275b1d798f9d1221efb5c6 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 20 Apr 2009 14:31:42 +0200 Subject: cfg80211: clean up includes Trying to separate header files into net/wireless.h and net/cfg80211.h has been a source of confusion. Remove net/wireless.h (because there also is the linux/wireless.h) and subsume everything into net/cfg80211.h -- except the definitions for regulatory structures which get moved to a new header net/regulatory.h. The "new" net/cfg80211.h is now divided into sections. There are no real changes in this patch but code shuffling and some very minor documentation fixes. I have also, to make things reflect reality, put in a copyright line for Luis to net/regulatory.h since that is probably exclusively written by him but was formerly in a file that only had my copyright line. Signed-off-by: Johannes Berg Cc: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ar9170/ar9170.h | 2 +- drivers/net/wireless/ath/ar9170/usb.h | 2 +- drivers/net/wireless/ath/ath9k/eeprom.h | 2 +- drivers/net/wireless/ath/regd.c | 1 - drivers/net/wireless/ath/regd.h | 1 - drivers/net/wireless/rndis_wlan.c | 1 - include/net/cfg80211.h | 709 +++++++++++++++++++++++++------ include/net/mac80211.h | 1 - include/net/regulatory.h | 101 +++++ include/net/wireless.h | 492 --------------------- net/mac80211/ht.c | 1 - net/mac80211/ieee80211_i.h | 1 - net/mac80211/spectmgmt.c | 2 +- net/wireless/core.c | 1 - net/wireless/core.h | 1 - net/wireless/ibss.c | 1 - net/wireless/reg.c | 1 - net/wireless/util.c | 6 +- net/wireless/wext-compat.c | 1 - 19 files changed, 690 insertions(+), 637 deletions(-) create mode 100644 include/net/regulatory.h delete mode 100644 include/net/wireless.h (limited to 'net/wireless/wext-compat.c') diff --git a/drivers/net/wireless/ath/ar9170/ar9170.h b/drivers/net/wireless/ath/ar9170/ar9170.h index f797495faa56..2522a190fdfb 100644 --- a/drivers/net/wireless/ath/ar9170/ar9170.h +++ b/drivers/net/wireless/ath/ar9170/ar9170.h @@ -40,7 +40,7 @@ #include #include -#include +#include #include #ifdef CONFIG_AR9170_LEDS #include diff --git a/drivers/net/wireless/ath/ar9170/usb.h b/drivers/net/wireless/ath/ar9170/usb.h index f5852924cd64..ac42586495d8 100644 --- a/drivers/net/wireless/ath/ar9170/usb.h +++ b/drivers/net/wireless/ath/ar9170/usb.h @@ -43,7 +43,7 @@ #include #include #include -#include +#include #include #include #include "eeprom.h" diff --git a/drivers/net/wireless/ath/ath9k/eeprom.h b/drivers/net/wireless/ath/ath9k/eeprom.h index 9a7715df5cff..7c59dc47f912 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom.h +++ b/drivers/net/wireless/ath/ath9k/eeprom.h @@ -17,7 +17,7 @@ #ifndef EEPROM_H #define EEPROM_H -#include +#include #define AH_USE_EEPROM 0x1 diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c index 526c7f1308db..fdf07c822081 100644 --- a/drivers/net/wireless/ath/regd.c +++ b/drivers/net/wireless/ath/regd.c @@ -18,7 +18,6 @@ #include #include #include -#include #include "regd.h" #include "regd_common.h" diff --git a/drivers/net/wireless/ath/regd.h b/drivers/net/wireless/ath/regd.h index eba7c7123b50..07291ccb23f2 100644 --- a/drivers/net/wireless/ath/regd.h +++ b/drivers/net/wireless/ath/regd.h @@ -20,7 +20,6 @@ #include #include -#include #define NO_CTL 0xff #define SD_NO_CTL 0xE0 diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 239e6a14eae2..43e0ba61df24 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -42,7 +42,6 @@ #include #include #include -#include #include #include #include diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 5287a3e56e7c..601eac64b02d 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1,70 +1,217 @@ #ifndef __NET_CFG80211_H #define __NET_CFG80211_H +/* + * 802.11 device and configuration interface + * + * Copyright 2006-2009 Johannes Berg + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include #include #include #include #include #include -#include -#include -#include +#include + /* remove once we remove the wext stuff */ +#include +#include + /* - * 802.11 configuration in-kernel interface + * wireless hardware capability structures + */ + +/** + * enum ieee80211_band - supported frequency bands + * + * The bands are assigned this way because the supported + * bitrates differ in these bands. * - * Copyright 2006, 2007 Johannes Berg + * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band + * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) */ +enum ieee80211_band { + IEEE80211_BAND_2GHZ, + IEEE80211_BAND_5GHZ, + + /* keep last */ + IEEE80211_NUM_BANDS +}; /** - * struct vif_params - describes virtual interface parameters - * @mesh_id: mesh ID to use - * @mesh_id_len: length of the mesh ID + * enum ieee80211_channel_flags - channel flags + * + * Channel flags set by the regulatory control code. + * + * @IEEE80211_CHAN_DISABLED: This channel is disabled. + * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted + * on this channel. + * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. + * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. + * @IEEE80211_CHAN_NO_FAT_ABOVE: extension channel above this channel + * is not permitted. + * @IEEE80211_CHAN_NO_FAT_BELOW: extension channel below this channel + * is not permitted. */ -struct vif_params { - u8 *mesh_id; - int mesh_id_len; +enum ieee80211_channel_flags { + IEEE80211_CHAN_DISABLED = 1<<0, + IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, + IEEE80211_CHAN_NO_IBSS = 1<<2, + IEEE80211_CHAN_RADAR = 1<<3, + IEEE80211_CHAN_NO_FAT_ABOVE = 1<<4, + IEEE80211_CHAN_NO_FAT_BELOW = 1<<5, }; -/* Radiotap header iteration - * implemented in net/wireless/radiotap.c - * docs in Documentation/networking/radiotap-headers.txt +/** + * struct ieee80211_channel - channel definition + * + * This structure describes a single channel for use + * with cfg80211. + * + * @center_freq: center frequency in MHz + * @max_bandwidth: maximum allowed bandwidth for this channel, in MHz + * @hw_value: hardware-specific value for the channel + * @flags: channel flags from &enum ieee80211_channel_flags. + * @orig_flags: channel flags at registration time, used by regulatory + * code to support devices with additional restrictions + * @band: band this channel belongs to. + * @max_antenna_gain: maximum antenna gain in dBi + * @max_power: maximum transmission power (in dBm) + * @beacon_found: helper to regulatory code to indicate when a beacon + * has been found on this channel. Use regulatory_hint_found_beacon() + * to enable this, this is is useful only on 5 GHz band. + * @orig_mag: internal use + * @orig_mpwr: internal use */ +struct ieee80211_channel { + enum ieee80211_band band; + u16 center_freq; + u8 max_bandwidth; + u16 hw_value; + u32 flags; + int max_antenna_gain; + int max_power; + bool beacon_found; + u32 orig_flags; + int orig_mag, orig_mpwr; +}; + /** - * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args - * @rtheader: pointer to the radiotap header we are walking through - * @max_length: length of radiotap header in cpu byte ordering - * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg - * @this_arg: pointer to current radiotap arg - * @arg_index: internal next argument index - * @arg: internal next argument pointer - * @next_bitmap: internal pointer to next present u32 - * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present + * enum ieee80211_rate_flags - rate flags + * + * Hardware/specification flags for rates. These are structured + * in a way that allows using the same bitrate structure for + * different bands/PHY modes. + * + * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short + * preamble on this bitrate; only relevant in 2.4GHz band and + * with CCK rates. + * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate + * when used with 802.11a (on the 5 GHz band); filled by the + * core code when registering the wiphy. + * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate + * when used with 802.11b (on the 2.4 GHz band); filled by the + * core code when registering the wiphy. + * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate + * when used with 802.11g (on the 2.4 GHz band); filled by the + * core code when registering the wiphy. + * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. */ +enum ieee80211_rate_flags { + IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, + IEEE80211_RATE_MANDATORY_A = 1<<1, + IEEE80211_RATE_MANDATORY_B = 1<<2, + IEEE80211_RATE_MANDATORY_G = 1<<3, + IEEE80211_RATE_ERP_G = 1<<4, +}; -struct ieee80211_radiotap_iterator { - struct ieee80211_radiotap_header *rtheader; - int max_length; - int this_arg_index; - u8 *this_arg; +/** + * struct ieee80211_rate - bitrate definition + * + * This structure describes a bitrate that an 802.11 PHY can + * operate with. The two values @hw_value and @hw_value_short + * are only for driver use when pointers to this structure are + * passed around. + * + * @flags: rate-specific flags + * @bitrate: bitrate in units of 100 Kbps + * @hw_value: driver/hardware value for this rate + * @hw_value_short: driver/hardware value for this rate when + * short preamble is used + */ +struct ieee80211_rate { + u32 flags; + u16 bitrate; + u16 hw_value, hw_value_short; +}; - int arg_index; - u8 *arg; - __le32 *next_bitmap; - u32 bitmap_shifter; +/** + * struct ieee80211_sta_ht_cap - STA's HT capabilities + * + * This structure describes most essential parameters needed + * to describe 802.11n HT capabilities for an STA. + * + * @ht_supported: is HT supported by the STA + * @cap: HT capabilities map as described in 802.11n spec + * @ampdu_factor: Maximum A-MPDU length factor + * @ampdu_density: Minimum A-MPDU spacing + * @mcs: Supported MCS rates + */ +struct ieee80211_sta_ht_cap { + u16 cap; /* use IEEE80211_HT_CAP_ */ + bool ht_supported; + u8 ampdu_factor; + u8 ampdu_density; + struct ieee80211_mcs_info mcs; }; -extern int ieee80211_radiotap_iterator_init( - struct ieee80211_radiotap_iterator *iterator, - struct ieee80211_radiotap_header *radiotap_header, - int max_length); +/** + * struct ieee80211_supported_band - frequency band definition + * + * This structure describes a frequency band a wiphy + * is able to operate in. + * + * @channels: Array of channels the hardware can operate in + * in this band. + * @band: the band this structure represents + * @n_channels: Number of channels in @channels + * @bitrates: Array of bitrates the hardware can operate with + * in this band. Must be sorted to give a valid "supported + * rates" IE, i.e. CCK rates first, then OFDM. + * @n_bitrates: Number of bitrates in @bitrates + */ +struct ieee80211_supported_band { + struct ieee80211_channel *channels; + struct ieee80211_rate *bitrates; + enum ieee80211_band band; + int n_channels; + int n_bitrates; + struct ieee80211_sta_ht_cap ht_cap; +}; -extern int ieee80211_radiotap_iterator_next( - struct ieee80211_radiotap_iterator *iterator); +/* + * Wireless hardware/device configuration structures and methods + */ +/** + * struct vif_params - describes virtual interface parameters + * @mesh_id: mesh ID to use + * @mesh_id_len: length of the mesh ID + */ +struct vif_params { + u8 *mesh_id; + int mesh_id_len; +}; - /** +/** * struct key_params - key information * * Information about a key @@ -347,92 +494,6 @@ struct bss_parameters { u8 basic_rates_len; }; -/** - * enum environment_cap - Environment parsed from country IE - * @ENVIRON_ANY: indicates country IE applies to both indoor and - * outdoor operation. - * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation - * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation - */ -enum environment_cap { - ENVIRON_ANY, - ENVIRON_INDOOR, - ENVIRON_OUTDOOR, -}; - -/** - * struct regulatory_request - used to keep track of regulatory requests - * - * @wiphy_idx: this is set if this request's initiator is - * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This - * can be used by the wireless core to deal with conflicts - * and potentially inform users of which devices specifically - * cased the conflicts. - * @initiator: indicates who sent this request, could be any of - * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*) - * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested - * regulatory domain. We have a few special codes: - * 00 - World regulatory domain - * 99 - built by driver but a specific alpha2 cannot be determined - * 98 - result of an intersection between two regulatory domains - * @intersect: indicates whether the wireless core should intersect - * the requested regulatory domain with the presently set regulatory - * domain. - * @country_ie_checksum: checksum of the last processed and accepted - * country IE - * @country_ie_env: lets us know if the AP is telling us we are outdoor, - * indoor, or if it doesn't matter - * @list: used to insert into the reg_requests_list linked list - */ -struct regulatory_request { - int wiphy_idx; - enum nl80211_reg_initiator initiator; - char alpha2[2]; - bool intersect; - u32 country_ie_checksum; - enum environment_cap country_ie_env; - struct list_head list; -}; - -struct ieee80211_freq_range { - u32 start_freq_khz; - u32 end_freq_khz; - u32 max_bandwidth_khz; -}; - -struct ieee80211_power_rule { - u32 max_antenna_gain; - u32 max_eirp; -}; - -struct ieee80211_reg_rule { - struct ieee80211_freq_range freq_range; - struct ieee80211_power_rule power_rule; - u32 flags; -}; - -struct ieee80211_regdomain { - u32 n_reg_rules; - char alpha2[2]; - struct ieee80211_reg_rule reg_rules[]; -}; - -#define MHZ_TO_KHZ(freq) ((freq) * 1000) -#define KHZ_TO_MHZ(freq) ((freq) / 1000) -#define DBI_TO_MBI(gain) ((gain) * 100) -#define MBI_TO_DBI(gain) ((gain) / 100) -#define DBM_TO_MBM(gain) ((gain) * 100) -#define MBM_TO_DBM(gain) ((gain) / 100) - -#define REG_RULE(start, end, bw, gain, eirp, reg_flags) { \ - .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \ - .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \ - .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \ - .power_rule.max_antenna_gain = DBI_TO_MBI(gain), \ - .power_rule.max_eirp = DBM_TO_MBM(eirp), \ - .flags = reg_flags, \ - } - struct mesh_config { /* Timeouts in ms */ /* Mesh plink management parameters */ @@ -853,7 +914,396 @@ struct cfg80211_ops { int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); }; -/* temporary wext handlers */ +/* + * wireless hardware and networking interfaces structures + * and registration/helper functions + */ + +/** + * struct wiphy - wireless hardware description + * @idx: the wiphy index assigned to this item + * @class_dev: the class device representing /sys/class/ieee80211/ + * @custom_regulatory: tells us the driver for this device + * has its own custom regulatory domain and cannot identify the + * ISO / IEC 3166 alpha2 it belongs to. When this is enabled + * we will disregard the first regulatory hint (when the + * initiator is %REGDOM_SET_BY_CORE). + * @strict_regulatory: tells us the driver for this device will ignore + * regulatory domain settings until it gets its own regulatory domain + * via its regulatory_hint(). After its gets its own regulatory domain + * it will only allow further regulatory domain settings to further + * enhance compliance. For example if channel 13 and 14 are disabled + * by this regulatory domain no user regulatory domain can enable these + * channels at a later time. This can be used for devices which do not + * have calibration information gauranteed for frequencies or settings + * outside of its regulatory domain. + * @reg_notifier: the driver's regulatory notification callback + * @regd: the driver's regulatory domain, if one was requested via + * the regulatory_hint() API. This can be used by the driver + * on the reg_notifier() if it chooses to ignore future + * regulatory domain changes caused by other drivers. + * @signal_type: signal type reported in &struct cfg80211_bss. + * @cipher_suites: supported cipher suites + * @n_cipher_suites: number of supported cipher suites + */ +struct wiphy { + /* assign these fields before you register the wiphy */ + + /* permanent MAC address */ + u8 perm_addr[ETH_ALEN]; + + /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ + u16 interface_modes; + + bool custom_regulatory; + bool strict_regulatory; + + enum cfg80211_signal_type signal_type; + + int bss_priv_size; + u8 max_scan_ssids; + u16 max_scan_ie_len; + + int n_cipher_suites; + const u32 *cipher_suites; + + /* If multiple wiphys are registered and you're handed e.g. + * a regular netdev with assigned ieee80211_ptr, you won't + * know whether it points to a wiphy your driver has registered + * or not. Assign this to something global to your driver to + * help determine whether you own this wiphy or not. */ + void *privid; + + struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; + + /* Lets us get back the wiphy on the callback */ + int (*reg_notifier)(struct wiphy *wiphy, + struct regulatory_request *request); + + /* fields below are read-only, assigned by cfg80211 */ + + const struct ieee80211_regdomain *regd; + + /* the item in /sys/class/ieee80211/ points to this, + * you need use set_wiphy_dev() (see below) */ + struct device dev; + + /* dir in debugfs: ieee80211/ */ + struct dentry *debugfsdir; + + char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); +}; + +/** + * wiphy_priv - return priv from wiphy + * + * @wiphy: the wiphy whose priv pointer to return + */ +static inline void *wiphy_priv(struct wiphy *wiphy) +{ + BUG_ON(!wiphy); + return &wiphy->priv; +} + +/** + * set_wiphy_dev - set device pointer for wiphy + * + * @wiphy: The wiphy whose device to bind + * @dev: The device to parent it to + */ +static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) +{ + wiphy->dev.parent = dev; +} + +/** + * wiphy_dev - get wiphy dev pointer + * + * @wiphy: The wiphy whose device struct to look up + */ +static inline struct device *wiphy_dev(struct wiphy *wiphy) +{ + return wiphy->dev.parent; +} + +/** + * wiphy_name - get wiphy name + * + * @wiphy: The wiphy whose name to return + */ +static inline const char *wiphy_name(struct wiphy *wiphy) +{ + return dev_name(&wiphy->dev); +} + +/** + * wiphy_new - create a new wiphy for use with cfg80211 + * + * @ops: The configuration operations for this device + * @sizeof_priv: The size of the private area to allocate + * + * Create a new wiphy and associate the given operations with it. + * @sizeof_priv bytes are allocated for private use. + * + * The returned pointer must be assigned to each netdev's + * ieee80211_ptr for proper operation. + */ +struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv); + +/** + * wiphy_register - register a wiphy with cfg80211 + * + * @wiphy: The wiphy to register. + * + * Returns a non-negative wiphy index or a negative error code. + */ +extern int wiphy_register(struct wiphy *wiphy); + +/** + * wiphy_unregister - deregister a wiphy from cfg80211 + * + * @wiphy: The wiphy to unregister. + * + * After this call, no more requests can be made with this priv + * pointer, but the call may sleep to wait for an outstanding + * request that is being handled. + */ +extern void wiphy_unregister(struct wiphy *wiphy); + +/** + * wiphy_free - free wiphy + * + * @wiphy: The wiphy to free + */ +extern void wiphy_free(struct wiphy *wiphy); + +/** + * struct wireless_dev - wireless per-netdev state + * + * This structure must be allocated by the driver/stack + * that uses the ieee80211_ptr field in struct net_device + * (this is intentional so it can be allocated along with + * the netdev.) + * + * @wiphy: pointer to hardware description + * @iftype: interface type + * @list: (private) Used to collect the interfaces + * @netdev: (private) Used to reference back to the netdev + * @current_bss: (private) Used by the internal configuration code + * @bssid: (private) Used by the internal configuration code + * @ssid: (private) Used by the internal configuration code + * @ssid_len: (private) Used by the internal configuration code + * @wext: (private) Used by the internal wireless extensions compat code + * @wext_bssid: (private) Used by the internal wireless extensions compat code + */ +struct wireless_dev { + struct wiphy *wiphy; + enum nl80211_iftype iftype; + + /* private to the generic wireless code */ + struct list_head list; + struct net_device *netdev; + + /* currently used for IBSS - might be rearranged in the future */ + struct cfg80211_bss *current_bss; + u8 bssid[ETH_ALEN]; + u8 ssid[IEEE80211_MAX_SSID_LEN]; + u8 ssid_len; + +#ifdef CONFIG_WIRELESS_EXT + /* wext data */ + struct cfg80211_ibss_params wext; + u8 wext_bssid[ETH_ALEN]; +#endif +}; + +/** + * wdev_priv - return wiphy priv from wireless_dev + * + * @wdev: The wireless device whose wiphy's priv pointer to return + */ +static inline void *wdev_priv(struct wireless_dev *wdev) +{ + BUG_ON(!wdev); + return wiphy_priv(wdev->wiphy); +} + +/* + * Utility functions + */ + +/** + * ieee80211_channel_to_frequency - convert channel number to frequency + */ +extern int ieee80211_channel_to_frequency(int chan); + +/** + * ieee80211_frequency_to_channel - convert frequency to channel number + */ +extern int ieee80211_frequency_to_channel(int freq); + +/* + * Name indirection necessary because the ieee80211 code also has + * a function named "ieee80211_get_channel", so if you include + * cfg80211's header file you get cfg80211's version, if you try + * to include both header files you'll (rightfully!) get a symbol + * clash. + */ +extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, + int freq); +/** + * ieee80211_get_channel - get channel struct from wiphy for specified frequency + */ +static inline struct ieee80211_channel * +ieee80211_get_channel(struct wiphy *wiphy, int freq) +{ + return __ieee80211_get_channel(wiphy, freq); +} + +/** + * ieee80211_get_response_rate - get basic rate for a given rate + * + * @sband: the band to look for rates in + * @basic_rates: bitmap of basic rates + * @bitrate: the bitrate for which to find the basic rate + * + * This function returns the basic rate corresponding to a given + * bitrate, that is the next lower bitrate contained in the basic + * rate map, which is, for this function, given as a bitmap of + * indices of rates in the band's bitrate table. + */ +struct ieee80211_rate * +ieee80211_get_response_rate(struct ieee80211_supported_band *sband, + u32 basic_rates, int bitrate); + +/* + * Radiotap parsing functions -- for controlled injection support + * + * Implemented in net/wireless/radiotap.c + * Documentation in Documentation/networking/radiotap-headers.txt + */ + +/** + * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args + * @rtheader: pointer to the radiotap header we are walking through + * @max_length: length of radiotap header in cpu byte ordering + * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg + * @this_arg: pointer to current radiotap arg + * @arg_index: internal next argument index + * @arg: internal next argument pointer + * @next_bitmap: internal pointer to next present u32 + * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present + */ + +struct ieee80211_radiotap_iterator { + struct ieee80211_radiotap_header *rtheader; + int max_length; + int this_arg_index; + u8 *this_arg; + + int arg_index; + u8 *arg; + __le32 *next_bitmap; + u32 bitmap_shifter; +}; + +extern int ieee80211_radiotap_iterator_init( + struct ieee80211_radiotap_iterator *iterator, + struct ieee80211_radiotap_header *radiotap_header, + int max_length); + +extern int ieee80211_radiotap_iterator_next( + struct ieee80211_radiotap_iterator *iterator); + +/* + * Regulatory helper functions for wiphys + */ + +/** + * regulatory_hint - driver hint to the wireless core a regulatory domain + * @wiphy: the wireless device giving the hint (used only for reporting + * conflicts) + * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain + * should be in. If @rd is set this should be NULL. Note that if you + * set this to NULL you should still set rd->alpha2 to some accepted + * alpha2. + * + * Wireless drivers can use this function to hint to the wireless core + * what it believes should be the current regulatory domain by + * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory + * domain should be in or by providing a completely build regulatory domain. + * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried + * for a regulatory domain structure for the respective country. + * + * The wiphy must have been registered to cfg80211 prior to this call. + * For cfg80211 drivers this means you must first use wiphy_register(), + * for mac80211 drivers you must first use ieee80211_register_hw(). + * + * Drivers should check the return value, its possible you can get + * an -ENOMEM. + */ +extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); + +/** + * regulatory_hint_11d - hints a country IE as a regulatory domain + * @wiphy: the wireless device giving the hint (used only for reporting + * conflicts) + * @country_ie: pointer to the country IE + * @country_ie_len: length of the country IE + * + * We will intersect the rd with the what CRDA tells us should apply + * for the alpha2 this country IE belongs to, this prevents APs from + * sending us incorrect or outdated information against a country. + */ +extern void regulatory_hint_11d(struct wiphy *wiphy, + u8 *country_ie, + u8 country_ie_len); +/** + * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain + * @wiphy: the wireless device we want to process the regulatory domain on + * @regd: the custom regulatory domain to use for this wiphy + * + * Drivers can sometimes have custom regulatory domains which do not apply + * to a specific country. Drivers can use this to apply such custom regulatory + * domains. This routine must be called prior to wiphy registration. The + * custom regulatory domain will be trusted completely and as such previous + * default channel settings will be disregarded. If no rule is found for a + * channel on the regulatory domain the channel will be disabled. + */ +extern void wiphy_apply_custom_regulatory( + struct wiphy *wiphy, + const struct ieee80211_regdomain *regd); + +/** + * freq_reg_info - get regulatory information for the given frequency + * @wiphy: the wiphy for which we want to process this rule for + * @center_freq: Frequency in KHz for which we want regulatory information for + * @bandwidth: the bandwidth requirement you have in KHz, if you do not have one + * you can set this to 0. If this frequency is allowed we then set + * this value to the maximum allowed bandwidth. + * @reg_rule: the regulatory rule which we have for this frequency + * + * Use this function to get the regulatory rule for a specific frequency on + * a given wireless device. If the device has a specific regulatory domain + * it wants to follow we respect that unless a country IE has been received + * and processed already. + * + * Returns 0 if it was able to find a valid regulatory rule which does + * apply to the given center_freq otherwise it returns non-zero. It will + * also return -ERANGE if we determine the given center_freq does not even have + * a regulatory rule for a frequency range in the center_freq's band. See + * freq_in_rule_band() for our current definition of a band -- this is purely + * subjective and right now its 802.11 specific. + */ +extern int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth, + const struct ieee80211_reg_rule **reg_rule); + +/* + * Temporary wext handlers & helper functions + * + * In the future cfg80211 will simply assign the entire wext handler + * structure to netdevs it manages, but we're not there yet. + */ int cfg80211_wext_giwname(struct net_device *dev, struct iw_request_info *info, char *name, char *extra); @@ -892,10 +1342,14 @@ int cfg80211_ibss_wext_giwap(struct net_device *dev, struct iw_request_info *info, struct sockaddr *ap_addr, char *extra); -/* wext helper for now (to be removed) */ struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq); +/* + * callbacks for asynchronous cfg80211 methods, notification + * functions and BSS handling helpers + */ + /** * cfg80211_scan_done - notify that scan finished * @@ -949,6 +1403,7 @@ struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, const u8 *meshid, size_t meshidlen, const u8 *meshcfg); void cfg80211_put_bss(struct cfg80211_bss *bss); + /** * cfg80211_unlink_bss - unlink BSS from internal data structures * @wiphy: the wiphy diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 52808bdcc6ca..d9686917252b 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -19,7 +19,6 @@ #include #include #include -#include #include /** diff --git a/include/net/regulatory.h b/include/net/regulatory.h new file mode 100644 index 000000000000..47995b81c5d7 --- /dev/null +++ b/include/net/regulatory.h @@ -0,0 +1,101 @@ +#ifndef __NET_REGULATORY_H +#define __NET_REGULATORY_H +/* + * regulatory support structures + * + * Copyright 2008-2009 Luis R. Rodriguez + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + +/** + * enum environment_cap - Environment parsed from country IE + * @ENVIRON_ANY: indicates country IE applies to both indoor and + * outdoor operation. + * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation + * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation + */ +enum environment_cap { + ENVIRON_ANY, + ENVIRON_INDOOR, + ENVIRON_OUTDOOR, +}; + +/** + * struct regulatory_request - used to keep track of regulatory requests + * + * @wiphy_idx: this is set if this request's initiator is + * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This + * can be used by the wireless core to deal with conflicts + * and potentially inform users of which devices specifically + * cased the conflicts. + * @initiator: indicates who sent this request, could be any of + * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*) + * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested + * regulatory domain. We have a few special codes: + * 00 - World regulatory domain + * 99 - built by driver but a specific alpha2 cannot be determined + * 98 - result of an intersection between two regulatory domains + * @intersect: indicates whether the wireless core should intersect + * the requested regulatory domain with the presently set regulatory + * domain. + * @country_ie_checksum: checksum of the last processed and accepted + * country IE + * @country_ie_env: lets us know if the AP is telling us we are outdoor, + * indoor, or if it doesn't matter + * @list: used to insert into the reg_requests_list linked list + */ +struct regulatory_request { + int wiphy_idx; + enum nl80211_reg_initiator initiator; + char alpha2[2]; + bool intersect; + u32 country_ie_checksum; + enum environment_cap country_ie_env; + struct list_head list; +}; + +struct ieee80211_freq_range { + u32 start_freq_khz; + u32 end_freq_khz; + u32 max_bandwidth_khz; +}; + +struct ieee80211_power_rule { + u32 max_antenna_gain; + u32 max_eirp; +}; + +struct ieee80211_reg_rule { + struct ieee80211_freq_range freq_range; + struct ieee80211_power_rule power_rule; + u32 flags; +}; + +struct ieee80211_regdomain { + u32 n_reg_rules; + char alpha2[2]; + struct ieee80211_reg_rule reg_rules[]; +}; + +#define MHZ_TO_KHZ(freq) ((freq) * 1000) +#define KHZ_TO_MHZ(freq) ((freq) / 1000) +#define DBI_TO_MBI(gain) ((gain) * 100) +#define MBI_TO_DBI(gain) ((gain) / 100) +#define DBM_TO_MBM(gain) ((gain) * 100) +#define MBM_TO_DBM(gain) ((gain) / 100) + +#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \ +{ \ + .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \ + .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \ + .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \ + .power_rule.max_antenna_gain = DBI_TO_MBI(gain),\ + .power_rule.max_eirp = DBM_TO_MBM(eirp), \ + .flags = reg_flags, \ +} + +#endif diff --git a/include/net/wireless.h b/include/net/wireless.h deleted file mode 100644 index abd27b033331..000000000000 --- a/include/net/wireless.h +++ /dev/null @@ -1,492 +0,0 @@ -#ifndef __NET_WIRELESS_H -#define __NET_WIRELESS_H - -/* - * 802.11 device management - * - * Copyright 2007 Johannes Berg - */ - -#include -#include -#include -#include -#include - -/** - * enum ieee80211_band - supported frequency bands - * - * The bands are assigned this way because the supported - * bitrates differ in these bands. - * - * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band - * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) - */ -enum ieee80211_band { - IEEE80211_BAND_2GHZ, - IEEE80211_BAND_5GHZ, - - /* keep last */ - IEEE80211_NUM_BANDS -}; - -/** - * enum ieee80211_channel_flags - channel flags - * - * Channel flags set by the regulatory control code. - * - * @IEEE80211_CHAN_DISABLED: This channel is disabled. - * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted - * on this channel. - * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. - * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. - * @IEEE80211_CHAN_NO_FAT_ABOVE: extension channel above this channel - * is not permitted. - * @IEEE80211_CHAN_NO_FAT_BELOW: extension channel below this channel - * is not permitted. - */ -enum ieee80211_channel_flags { - IEEE80211_CHAN_DISABLED = 1<<0, - IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, - IEEE80211_CHAN_NO_IBSS = 1<<2, - IEEE80211_CHAN_RADAR = 1<<3, - IEEE80211_CHAN_NO_FAT_ABOVE = 1<<4, - IEEE80211_CHAN_NO_FAT_BELOW = 1<<5, -}; - -/** - * struct ieee80211_channel - channel definition - * - * This structure describes a single channel for use - * with cfg80211. - * - * @center_freq: center frequency in MHz - * @max_bandwidth: maximum allowed bandwidth for this channel, in MHz - * @hw_value: hardware-specific value for the channel - * @flags: channel flags from &enum ieee80211_channel_flags. - * @orig_flags: channel flags at registration time, used by regulatory - * code to support devices with additional restrictions - * @band: band this channel belongs to. - * @max_antenna_gain: maximum antenna gain in dBi - * @max_power: maximum transmission power (in dBm) - * @beacon_found: helper to regulatory code to indicate when a beacon - * has been found on this channel. Use regulatory_hint_found_beacon() - * to enable this, this is is useful only on 5 GHz band. - * @orig_mag: internal use - * @orig_mpwr: internal use - */ -struct ieee80211_channel { - enum ieee80211_band band; - u16 center_freq; - u8 max_bandwidth; - u16 hw_value; - u32 flags; - int max_antenna_gain; - int max_power; - bool beacon_found; - u32 orig_flags; - int orig_mag, orig_mpwr; -}; - -/** - * enum ieee80211_rate_flags - rate flags - * - * Hardware/specification flags for rates. These are structured - * in a way that allows using the same bitrate structure for - * different bands/PHY modes. - * - * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short - * preamble on this bitrate; only relevant in 2.4GHz band and - * with CCK rates. - * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate - * when used with 802.11a (on the 5 GHz band); filled by the - * core code when registering the wiphy. - * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate - * when used with 802.11b (on the 2.4 GHz band); filled by the - * core code when registering the wiphy. - * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate - * when used with 802.11g (on the 2.4 GHz band); filled by the - * core code when registering the wiphy. - * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. - */ -enum ieee80211_rate_flags { - IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, - IEEE80211_RATE_MANDATORY_A = 1<<1, - IEEE80211_RATE_MANDATORY_B = 1<<2, - IEEE80211_RATE_MANDATORY_G = 1<<3, - IEEE80211_RATE_ERP_G = 1<<4, -}; - -/** - * struct ieee80211_rate - bitrate definition - * - * This structure describes a bitrate that an 802.11 PHY can - * operate with. The two values @hw_value and @hw_value_short - * are only for driver use when pointers to this structure are - * passed around. - * - * @flags: rate-specific flags - * @bitrate: bitrate in units of 100 Kbps - * @hw_value: driver/hardware value for this rate - * @hw_value_short: driver/hardware value for this rate when - * short preamble is used - */ -struct ieee80211_rate { - u32 flags; - u16 bitrate; - u16 hw_value, hw_value_short; -}; - -/** - * struct ieee80211_sta_ht_cap - STA's HT capabilities - * - * This structure describes most essential parameters needed - * to describe 802.11n HT capabilities for an STA. - * - * @ht_supported: is HT supported by the STA - * @cap: HT capabilities map as described in 802.11n spec - * @ampdu_factor: Maximum A-MPDU length factor - * @ampdu_density: Minimum A-MPDU spacing - * @mcs: Supported MCS rates - */ -struct ieee80211_sta_ht_cap { - u16 cap; /* use IEEE80211_HT_CAP_ */ - bool ht_supported; - u8 ampdu_factor; - u8 ampdu_density; - struct ieee80211_mcs_info mcs; -}; - -/** - * struct ieee80211_supported_band - frequency band definition - * - * This structure describes a frequency band a wiphy - * is able to operate in. - * - * @channels: Array of channels the hardware can operate in - * in this band. - * @band: the band this structure represents - * @n_channels: Number of channels in @channels - * @bitrates: Array of bitrates the hardware can operate with - * in this band. Must be sorted to give a valid "supported - * rates" IE, i.e. CCK rates first, then OFDM. - * @n_bitrates: Number of bitrates in @bitrates - */ -struct ieee80211_supported_band { - struct ieee80211_channel *channels; - struct ieee80211_rate *bitrates; - enum ieee80211_band band; - int n_channels; - int n_bitrates; - struct ieee80211_sta_ht_cap ht_cap; -}; - -/** - * struct wiphy - wireless hardware description - * @idx: the wiphy index assigned to this item - * @class_dev: the class device representing /sys/class/ieee80211/ - * @custom_regulatory: tells us the driver for this device - * has its own custom regulatory domain and cannot identify the - * ISO / IEC 3166 alpha2 it belongs to. When this is enabled - * we will disregard the first regulatory hint (when the - * initiator is %REGDOM_SET_BY_CORE). - * @strict_regulatory: tells us the driver for this device will ignore - * regulatory domain settings until it gets its own regulatory domain - * via its regulatory_hint(). After its gets its own regulatory domain - * it will only allow further regulatory domain settings to further - * enhance compliance. For example if channel 13 and 14 are disabled - * by this regulatory domain no user regulatory domain can enable these - * channels at a later time. This can be used for devices which do not - * have calibration information gauranteed for frequencies or settings - * outside of its regulatory domain. - * @reg_notifier: the driver's regulatory notification callback - * @regd: the driver's regulatory domain, if one was requested via - * the regulatory_hint() API. This can be used by the driver - * on the reg_notifier() if it chooses to ignore future - * regulatory domain changes caused by other drivers. - * @signal_type: signal type reported in &struct cfg80211_bss. - * @cipher_suites: supported cipher suites - * @n_cipher_suites: number of supported cipher suites - */ -struct wiphy { - /* assign these fields before you register the wiphy */ - - /* permanent MAC address */ - u8 perm_addr[ETH_ALEN]; - - /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ - u16 interface_modes; - - bool custom_regulatory; - bool strict_regulatory; - - enum cfg80211_signal_type signal_type; - - int bss_priv_size; - u8 max_scan_ssids; - u16 max_scan_ie_len; - - int n_cipher_suites; - const u32 *cipher_suites; - - /* If multiple wiphys are registered and you're handed e.g. - * a regular netdev with assigned ieee80211_ptr, you won't - * know whether it points to a wiphy your driver has registered - * or not. Assign this to something global to your driver to - * help determine whether you own this wiphy or not. */ - void *privid; - - struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; - - /* Lets us get back the wiphy on the callback */ - int (*reg_notifier)(struct wiphy *wiphy, - struct regulatory_request *request); - - /* fields below are read-only, assigned by cfg80211 */ - - const struct ieee80211_regdomain *regd; - - /* the item in /sys/class/ieee80211/ points to this, - * you need use set_wiphy_dev() (see below) */ - struct device dev; - - /* dir in debugfs: ieee80211/ */ - struct dentry *debugfsdir; - - char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); -}; - -/** struct wireless_dev - wireless per-netdev state - * - * This structure must be allocated by the driver/stack - * that uses the ieee80211_ptr field in struct net_device - * (this is intentional so it can be allocated along with - * the netdev.) - * - * @wiphy: pointer to hardware description - * @iftype: interface type - * @list: (private) - * @netdev (private) - */ -struct wireless_dev { - struct wiphy *wiphy; - enum nl80211_iftype iftype; - - /* private to the generic wireless code */ - struct list_head list; - struct net_device *netdev; - - /* currently used for IBSS - might be rearranged in the future */ - struct cfg80211_bss *current_bss; - u8 bssid[ETH_ALEN]; - u8 ssid[IEEE80211_MAX_SSID_LEN]; - u8 ssid_len; - -#ifdef CONFIG_WIRELESS_EXT - /* wext data */ - struct cfg80211_ibss_params wext; - u8 wext_bssid[ETH_ALEN]; -#endif -}; - -/** - * wiphy_priv - return priv from wiphy - */ -static inline void *wiphy_priv(struct wiphy *wiphy) -{ - BUG_ON(!wiphy); - return &wiphy->priv; -} - -/** - * set_wiphy_dev - set device pointer for wiphy - */ -static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) -{ - wiphy->dev.parent = dev; -} - -/** - * wiphy_dev - get wiphy dev pointer - */ -static inline struct device *wiphy_dev(struct wiphy *wiphy) -{ - return wiphy->dev.parent; -} - -/** - * wiphy_name - get wiphy name - */ -static inline const char *wiphy_name(struct wiphy *wiphy) -{ - return dev_name(&wiphy->dev); -} - -/** - * wdev_priv - return wiphy priv from wireless_dev - */ -static inline void *wdev_priv(struct wireless_dev *wdev) -{ - BUG_ON(!wdev); - return wiphy_priv(wdev->wiphy); -} - -/** - * wiphy_new - create a new wiphy for use with cfg80211 - * - * create a new wiphy and associate the given operations with it. - * @sizeof_priv bytes are allocated for private use. - * - * the returned pointer must be assigned to each netdev's - * ieee80211_ptr for proper operation. - */ -struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv); - -/** - * wiphy_register - register a wiphy with cfg80211 - * - * register the given wiphy - * - * Returns a non-negative wiphy index or a negative error code. - */ -extern int wiphy_register(struct wiphy *wiphy); - -/** - * wiphy_unregister - deregister a wiphy from cfg80211 - * - * unregister a device with the given priv pointer. - * After this call, no more requests can be made with this priv - * pointer, but the call may sleep to wait for an outstanding - * request that is being handled. - */ -extern void wiphy_unregister(struct wiphy *wiphy); - -/** - * wiphy_free - free wiphy - */ -extern void wiphy_free(struct wiphy *wiphy); - -/** - * ieee80211_channel_to_frequency - convert channel number to frequency - */ -extern int ieee80211_channel_to_frequency(int chan); - -/** - * ieee80211_frequency_to_channel - convert frequency to channel number - */ -extern int ieee80211_frequency_to_channel(int freq); - -/* - * Name indirection necessary because the ieee80211 code also has - * a function named "ieee80211_get_channel", so if you include - * cfg80211's header file you get cfg80211's version, if you try - * to include both header files you'll (rightfully!) get a symbol - * clash. - */ -extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, - int freq); -/** - * ieee80211_get_channel - get channel struct from wiphy for specified frequency - */ -static inline struct ieee80211_channel * -ieee80211_get_channel(struct wiphy *wiphy, int freq) -{ - return __ieee80211_get_channel(wiphy, freq); -} - -/** - * ieee80211_get_response_rate - get basic rate for a given rate - * - * @sband: the band to look for rates in - * @basic_rates: bitmap of basic rates - * @bitrate: the bitrate for which to find the basic rate - * - * This function returns the basic rate corresponding to a given - * bitrate, that is the next lower bitrate contained in the basic - * rate map, which is, for this function, given as a bitmap of - * indices of rates in the band's bitrate table. - */ -struct ieee80211_rate * -ieee80211_get_response_rate(struct ieee80211_supported_band *sband, - u32 basic_rates, int bitrate); - -/** - * regulatory_hint - driver hint to the wireless core a regulatory domain - * @wiphy: the wireless device giving the hint (used only for reporting - * conflicts) - * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain - * should be in. If @rd is set this should be NULL. Note that if you - * set this to NULL you should still set rd->alpha2 to some accepted - * alpha2. - * - * Wireless drivers can use this function to hint to the wireless core - * what it believes should be the current regulatory domain by - * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory - * domain should be in or by providing a completely build regulatory domain. - * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried - * for a regulatory domain structure for the respective country. - * - * The wiphy must have been registered to cfg80211 prior to this call. - * For cfg80211 drivers this means you must first use wiphy_register(), - * for mac80211 drivers you must first use ieee80211_register_hw(). - * - * Drivers should check the return value, its possible you can get - * an -ENOMEM. - */ -extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); - -/** - * regulatory_hint_11d - hints a country IE as a regulatory domain - * @wiphy: the wireless device giving the hint (used only for reporting - * conflicts) - * @country_ie: pointer to the country IE - * @country_ie_len: length of the country IE - * - * We will intersect the rd with the what CRDA tells us should apply - * for the alpha2 this country IE belongs to, this prevents APs from - * sending us incorrect or outdated information against a country. - */ -extern void regulatory_hint_11d(struct wiphy *wiphy, - u8 *country_ie, - u8 country_ie_len); -/** - * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain - * @wiphy: the wireless device we want to process the regulatory domain on - * @regd: the custom regulatory domain to use for this wiphy - * - * Drivers can sometimes have custom regulatory domains which do not apply - * to a specific country. Drivers can use this to apply such custom regulatory - * domains. This routine must be called prior to wiphy registration. The - * custom regulatory domain will be trusted completely and as such previous - * default channel settings will be disregarded. If no rule is found for a - * channel on the regulatory domain the channel will be disabled. - */ -extern void wiphy_apply_custom_regulatory( - struct wiphy *wiphy, - const struct ieee80211_regdomain *regd); - -/** - * freq_reg_info - get regulatory information for the given frequency - * @wiphy: the wiphy for which we want to process this rule for - * @center_freq: Frequency in KHz for which we want regulatory information for - * @bandwidth: the bandwidth requirement you have in KHz, if you do not have one - * you can set this to 0. If this frequency is allowed we then set - * this value to the maximum allowed bandwidth. - * @reg_rule: the regulatory rule which we have for this frequency - * - * Use this function to get the regulatory rule for a specific frequency on - * a given wireless device. If the device has a specific regulatory domain - * it wants to follow we respect that unless a country IE has been received - * and processed already. - * - * Returns 0 if it was able to find a valid regulatory rule which does - * apply to the given center_freq otherwise it returns non-zero. It will - * also return -ERANGE if we determine the given center_freq does not even have - * a regulatory rule for a frequency range in the center_freq's band. See - * freq_in_rule_band() for our current definition of a band -- this is purely - * subjective and right now its 802.11 specific. - */ -extern int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth, - const struct ieee80211_reg_rule **reg_rule); - -#endif /* __NET_WIRELESS_H */ diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 73bd427750ef..0891bfb06996 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -14,7 +14,6 @@ */ #include -#include #include #include "ieee80211_i.h" #include "rate.h" diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index e770c1e8e08c..92a573bf1035 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -24,7 +24,6 @@ #include #include #include -#include #include #include #include "key.h" diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c index 5f7a2624ed74..48bf78e7fa7a 100644 --- a/net/mac80211/spectmgmt.c +++ b/net/mac80211/spectmgmt.c @@ -15,7 +15,7 @@ */ #include -#include +#include #include #include "ieee80211_i.h" #include "sta_info.h" diff --git a/net/wireless/core.c b/net/wireless/core.c index de1ac51ae4e5..827a56263551 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -14,7 +14,6 @@ #include #include #include -#include #include "nl80211.h" #include "core.h" #include "sysfs.h" diff --git a/net/wireless/core.h b/net/wireless/core.h index 2ef3595fd6e0..89a8159ef0b1 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -11,7 +11,6 @@ #include #include #include -#include #include #include "reg.h" diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 2bf42fdef3a1..4e1fcb0c9e4c 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -7,7 +7,6 @@ #include #include #include -#include #include "nl80211.h" diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 574e217bcc86..f38cc39fa79e 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -37,7 +37,6 @@ #include #include #include -#include #include #include "core.h" #include "reg.h" diff --git a/net/wireless/util.c b/net/wireless/util.c index 487cdd9bcffc..5f7e997195c7 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1,10 +1,10 @@ /* * Wireless utility functions * - * Copyright 2007 Johannes Berg + * Copyright 2007-2009 Johannes Berg */ -#include -#include +#include +#include #include "core.h" struct ieee80211_rate * diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 57eaea26b67a..4e054ea9c0a0 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -12,7 +12,6 @@ #include #include #include -#include #include #include "core.h" -- cgit v1.2.3 From b9a5f8cab751d362f7c2d94899ca788c22fcd1ef Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Mon, 20 Apr 2009 18:39:05 +0200 Subject: nl80211: Add set/get for frag/rts threshold and retry limits Add new nl80211 attributes that can be used with NL80211_CMD_SET_WIPHY and NL80211_CMD_GET_WIPHY to manage fragmentation/RTS threshold and retry limits. Since these values are stored in struct wiphy, remove the local copy from mac80211 where feasible (frag & rts threshold). The retry limits are currently needed in struct ieee80211_conf, but these could be eventually removed since the driver should have access to the values in struct wiphy. Signed-off-by: Jouni Malinen Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/nl80211.h | 24 ++++++- include/net/cfg80211.h | 50 +++++++++++++++ net/mac80211/cfg.c | 27 ++++++++ net/mac80211/debugfs.c | 8 +-- net/mac80211/ieee80211_i.h | 3 - net/mac80211/main.c | 6 +- net/mac80211/tx.c | 9 ++- net/mac80211/util.c | 2 +- net/mac80211/wext.c | 138 ++--------------------------------------- net/wireless/core.c | 10 +++ net/wireless/nl80211.c | 95 ++++++++++++++++++++++++++++ net/wireless/wext-compat.c | 151 +++++++++++++++++++++++++++++++++++++++++++++ 12 files changed, 372 insertions(+), 151 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 25ce3e42bd10..dc9d9ec5d1ae 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -46,8 +46,10 @@ * to get a list of all present wiphys. * @NL80211_CMD_SET_WIPHY: set wiphy parameters, needs %NL80211_ATTR_WIPHY or * %NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME, - * %NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ, and/or - * %NL80211_ATTR_WIPHY_CHANNEL_TYPE. + * %NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ, + * %NL80211_ATTR_WIPHY_CHANNEL_TYPE, %NL80211_ATTR_WIPHY_RETRY_SHORT, + * %NL80211_ATTR_WIPHY_RETRY_LONG, %NL80211_ATTR_WIPHY_FRAG_THRESHOLD, + * and/or %NL80211_ATTR_WIPHY_RTS_THRESHOLD. * @NL80211_CMD_NEW_WIPHY: Newly created wiphy, response to get request * or rename notification. Has attributes %NL80211_ATTR_WIPHY and * %NL80211_ATTR_WIPHY_NAME. @@ -337,6 +339,18 @@ enum nl80211_commands { * NL80211_CHAN_HT20 = HT20 only * NL80211_CHAN_HT40MINUS = secondary channel is below the primary channel * NL80211_CHAN_HT40PLUS = secondary channel is above the primary channel + * @NL80211_ATTR_WIPHY_RETRY_SHORT: TX retry limit for frames whose length is + * less than or equal to the RTS threshold; allowed range: 1..255; + * dot11ShortRetryLimit; u8 + * @NL80211_ATTR_WIPHY_RETRY_LONG: TX retry limit for frames whose length is + * greater than the RTS threshold; allowed range: 1..255; + * dot11ShortLongLimit; u8 + * @NL80211_ATTR_WIPHY_FRAG_THRESHOLD: fragmentation threshold, i.e., maximum + * length in octets for frames; allowed range: 256..8000, disable + * fragmentation with (u32)-1; dot11FragmentationThreshold; u32 + * @NL80211_ATTR_WIPHY_RTS_THRESHOLD: RTS threshold (TX frames with length + * larger than or equal to this use RTS/CTS handshake); allowed range: + * 0..65536, disable with (u32)-1; dot11RTSThreshold; u32 * * @NL80211_ATTR_IFINDEX: network interface index of the device to operate on * @NL80211_ATTR_IFNAME: network interface name @@ -565,6 +579,12 @@ enum nl80211_attrs { NL80211_ATTR_FREQ_FIXED, + + NL80211_ATTR_WIPHY_RETRY_SHORT, + NL80211_ATTR_WIPHY_RETRY_LONG, + NL80211_ATTR_WIPHY_FRAG_THRESHOLD, + NL80211_ATTR_WIPHY_RTS_THRESHOLD, + /* 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 601eac64b02d..54bc69c83691 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -743,6 +743,20 @@ struct cfg80211_ibss_params { bool channel_fixed; }; +/** + * enum wiphy_params_flags - set_wiphy_params bitfield values + * WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed + * WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed + * WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed + * WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed + */ +enum wiphy_params_flags { + WIPHY_PARAM_RETRY_SHORT = 1 << 0, + WIPHY_PARAM_RETRY_LONG = 1 << 1, + WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, + WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, +}; + /** * struct cfg80211_ops - backend description for wireless configuration * @@ -823,6 +837,11 @@ struct cfg80211_ibss_params { * cfg80211_ibss_joined(), also call that function when changing BSSID due * to a merge. * @leave_ibss: Leave the IBSS. + * + * @set_wiphy_params: Notify that wiphy parameters have changed; + * @changed bitfield (see &enum wiphy_params_flags) describes which values + * have changed. The actual parameter values are available in + * struct wiphy. If returning an error, no value should be changed. */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -912,6 +931,8 @@ struct cfg80211_ops { int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params); int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); + + int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); }; /* @@ -945,6 +966,11 @@ struct cfg80211_ops { * @signal_type: signal type reported in &struct cfg80211_bss. * @cipher_suites: supported cipher suites * @n_cipher_suites: number of supported cipher suites + * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) + * @retry_long: Retry limit for long frames (dot11LongRetryLimit) + * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); + * -1 = fragmentation disabled, only odd values >= 256 used + * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled */ struct wiphy { /* assign these fields before you register the wiphy */ @@ -967,6 +993,11 @@ struct wiphy { int n_cipher_suites; const u32 *cipher_suites; + u8 retry_short; + u8 retry_long; + u32 frag_threshold; + u32 rts_threshold; + /* If multiple wiphys are registered and you're handed e.g. * a regular netdev with assigned ieee80211_ptr, you won't * know whether it points to a wiphy your driver has registered @@ -1345,6 +1376,25 @@ int cfg80211_ibss_wext_giwap(struct net_device *dev, struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq); +int cfg80211_wext_siwrts(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *rts, char *extra); +int cfg80211_wext_giwrts(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *rts, char *extra); +int cfg80211_wext_siwfrag(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *frag, char *extra); +int cfg80211_wext_giwfrag(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *frag, char *extra); +int cfg80211_wext_siwretry(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *retry, char *extra); +int cfg80211_wext_giwretry(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *retry, char *extra); + /* * callbacks for asynchronous cfg80211 methods, notification * functions and BSS handling helpers diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 14013dc64474..5e1c230744b5 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1298,6 +1298,32 @@ static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) return ieee80211_ibss_leave(sdata); } +static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + if (changed & WIPHY_PARAM_RTS_THRESHOLD) { + int err; + + if (local->ops->set_rts_threshold) { + err = local->ops->set_rts_threshold( + local_to_hw(local), wiphy->rts_threshold); + if (err) + return err; + } + } + + if (changed & WIPHY_PARAM_RETRY_SHORT) + local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; + if (changed & WIPHY_PARAM_RETRY_LONG) + local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; + if (changed & + (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); + + return 0; +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1336,4 +1362,5 @@ struct cfg80211_ops mac80211_config_ops = { .disassoc = ieee80211_disassoc, .join_ibss = ieee80211_join_ibss, .leave_ibss = ieee80211_leave_ibss, + .set_wiphy_params = ieee80211_set_wiphy_params, }; diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 210b9b6fecd2..5001328be46b 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -52,13 +52,13 @@ static const struct file_operations name## _ops = { \ DEBUGFS_READONLY_FILE(frequency, 20, "%d", local->hw.conf.channel->center_freq); DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", - local->rts_threshold); + local->hw.wiphy->rts_threshold); DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", - local->fragmentation_threshold); + local->hw.wiphy->frag_threshold); DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", - local->hw.conf.short_frame_max_tx_count); + local->hw.wiphy->retry_short); DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", - local->hw.conf.long_frame_max_tx_count); + local->hw.wiphy->retry_long); DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", local->total_ps_buffered); DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x", diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 92a573bf1035..dba78d89a10c 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -643,9 +643,6 @@ struct ieee80211_local { struct rate_control_ref *rate_ctrl; - int rts_threshold; - int fragmentation_threshold; - struct crypto_blkcipher *wep_tx_tfm; struct crypto_blkcipher *wep_rx_tfm; u32 wep_iv; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index d26fc399285e..5320e08434ac 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -776,10 +776,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, /* set up some defaults */ local->hw.queues = 1; local->hw.max_rates = 1; - local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; - local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; - local->hw.conf.long_frame_max_tx_count = 4; - local->hw.conf.short_frame_max_tx_count = 7; + local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; + local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; local->hw.conf.radio_enabled = true; INIT_LIST_HEAD(&local->interfaces); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index c53d77db3e4f..9ab49826c15a 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -516,7 +516,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) sband = tx->local->hw.wiphy->bands[tx->channel->band]; len = min_t(int, tx->skb->len + FCS_LEN, - tx->local->fragmentation_threshold); + tx->local->hw.wiphy->frag_threshold); /* set up the tx rate control struct we give the RC algo */ txrc.hw = local_to_hw(tx->local); @@ -527,8 +527,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) txrc.max_rate_idx = tx->sdata->max_ratectrl_rateidx; /* set up RTS protection if desired */ - if (tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD && - len > tx->local->rts_threshold) { + if (len > tx->local->hw.wiphy->rts_threshold) { txrc.rts = rts = true; } @@ -770,7 +769,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx) struct sk_buff *skb = tx->skb; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_hdr *hdr = (void *)skb->data; - int frag_threshold = tx->local->fragmentation_threshold; + int frag_threshold = tx->local->hw.wiphy->frag_threshold; int hdrlen; int fragnum; @@ -1088,7 +1087,7 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx, if (tx->flags & IEEE80211_TX_FRAGMENTED) { if ((tx->flags & IEEE80211_TX_UNICAST) && - skb->len + FCS_LEN > local->fragmentation_threshold && + skb->len + FCS_LEN > local->hw.wiphy->frag_threshold && !(info->flags & IEEE80211_TX_CTL_AMPDU)) tx->flags |= IEEE80211_TX_FRAGMENTED; else diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 3dd490fa4b68..11244212f41d 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1044,7 +1044,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) /* setup RTS threshold */ if (local->ops->set_rts_threshold) - local->ops->set_rts_threshold(hw, local->rts_threshold); + local->ops->set_rts_threshold(hw, hw->wiphy->rts_threshold); /* reconfigure hardware */ ieee80211_hw_config(local, ~0); diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index eb63fc148019..1eb6d8642a77 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -472,132 +472,6 @@ static int ieee80211_ioctl_giwtxpower(struct net_device *dev, return 0; } -static int ieee80211_ioctl_siwrts(struct net_device *dev, - struct iw_request_info *info, - struct iw_param *rts, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - if (rts->disabled) - local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; - else if (!rts->fixed) - /* if the rts value is not fixed, then take default */ - local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; - else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD) - return -EINVAL; - else - local->rts_threshold = rts->value; - - /* If the wlan card performs RTS/CTS in hardware/firmware, - * configure it here */ - - if (local->ops->set_rts_threshold) - local->ops->set_rts_threshold(local_to_hw(local), - local->rts_threshold); - - return 0; -} - -static int ieee80211_ioctl_giwrts(struct net_device *dev, - struct iw_request_info *info, - struct iw_param *rts, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - rts->value = local->rts_threshold; - rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD); - rts->fixed = 1; - - return 0; -} - - -static int ieee80211_ioctl_siwfrag(struct net_device *dev, - struct iw_request_info *info, - struct iw_param *frag, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - if (frag->disabled) - local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; - else if (!frag->fixed) - local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; - else if (frag->value < 256 || - frag->value > IEEE80211_MAX_FRAG_THRESHOLD) - return -EINVAL; - else { - /* Fragment length must be even, so strip LSB. */ - local->fragmentation_threshold = frag->value & ~0x1; - } - - return 0; -} - -static int ieee80211_ioctl_giwfrag(struct net_device *dev, - struct iw_request_info *info, - struct iw_param *frag, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - frag->value = local->fragmentation_threshold; - frag->disabled = (frag->value >= IEEE80211_MAX_FRAG_THRESHOLD); - frag->fixed = 1; - - return 0; -} - - -static int ieee80211_ioctl_siwretry(struct net_device *dev, - struct iw_request_info *info, - struct iw_param *retry, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - if (retry->disabled || - (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) - return -EINVAL; - - if (retry->flags & IW_RETRY_MAX) { - local->hw.conf.long_frame_max_tx_count = retry->value; - } else if (retry->flags & IW_RETRY_MIN) { - local->hw.conf.short_frame_max_tx_count = retry->value; - } else { - local->hw.conf.long_frame_max_tx_count = retry->value; - local->hw.conf.short_frame_max_tx_count = retry->value; - } - - ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); - - return 0; -} - - -static int ieee80211_ioctl_giwretry(struct net_device *dev, - struct iw_request_info *info, - struct iw_param *retry, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - retry->disabled = 0; - if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) { - /* first return min value, iwconfig will ask max value - * later if needed */ - retry->flags |= IW_RETRY_LIMIT; - retry->value = local->hw.conf.short_frame_max_tx_count; - if (local->hw.conf.long_frame_max_tx_count != - local->hw.conf.short_frame_max_tx_count) - retry->flags |= IW_RETRY_MIN; - return 0; - } - if (retry->flags & IW_RETRY_MAX) { - retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX; - retry->value = local->hw.conf.long_frame_max_tx_count; - } - - return 0; -} - - static int ieee80211_ioctl_siwencode(struct net_device *dev, struct iw_request_info *info, struct iw_point *erq, char *keybuf) @@ -1050,14 +924,14 @@ static const iw_handler ieee80211_handler[] = (iw_handler) NULL, /* -- hole -- */ (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */ (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */ - (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */ - (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */ - (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */ - (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */ + (iw_handler) cfg80211_wext_siwrts, /* SIOCSIWRTS */ + (iw_handler) cfg80211_wext_giwrts, /* SIOCGIWRTS */ + (iw_handler) cfg80211_wext_siwfrag, /* SIOCSIWFRAG */ + (iw_handler) cfg80211_wext_giwfrag, /* SIOCGIWFRAG */ (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */ (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */ - (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */ - (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */ + (iw_handler) cfg80211_wext_siwretry, /* SIOCSIWRETRY */ + (iw_handler) cfg80211_wext_giwretry, /* SIOCGIWRETRY */ (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */ (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */ (iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */ diff --git a/net/wireless/core.c b/net/wireless/core.c index 827a56263551..f256b4f7e833 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -273,6 +273,16 @@ struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv) drv->wiphy.dev.class = &ieee80211_class; drv->wiphy.dev.platform_data = drv; + /* + * Initialize wiphy parameters to IEEE 802.11 MIB default values. + * Fragmentation and RTS threshold are disabled by default with the + * special -1 value. + */ + drv->wiphy.retry_short = 7; + drv->wiphy.retry_long = 4; + drv->wiphy.frag_threshold = (u32) -1; + drv->wiphy.rts_threshold = (u32) -1; + return &drv->wiphy; } EXPORT_SYMBOL(wiphy_new); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 16f86356ac97..5a9a5c6c71db 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -61,6 +61,10 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, + [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, + [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, + [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, + [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, @@ -204,6 +208,16 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx); NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); + + NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, + dev->wiphy.retry_short); + NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, + dev->wiphy.retry_long); + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, + dev->wiphy.frag_threshold); + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, + dev->wiphy.rts_threshold); + NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, dev->wiphy.max_scan_ssids); NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, @@ -416,6 +430,9 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) struct cfg80211_registered_device *rdev; int result = 0, rem_txq_params = 0; struct nlattr *nl_txq_params; + u32 changed; + u8 retry_short = 0, retry_long = 0; + u32 frag_threshold = 0, rts_threshold = 0; rtnl_lock(); @@ -530,6 +547,84 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) goto bad_res; } + changed = 0; + + if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { + retry_short = nla_get_u8( + info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); + if (retry_short == 0) { + result = -EINVAL; + goto bad_res; + } + changed |= WIPHY_PARAM_RETRY_SHORT; + } + + if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { + retry_long = nla_get_u8( + info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); + if (retry_long == 0) { + result = -EINVAL; + goto bad_res; + } + changed |= WIPHY_PARAM_RETRY_LONG; + } + + if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { + frag_threshold = nla_get_u32( + info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); + if (frag_threshold < 256) { + result = -EINVAL; + goto bad_res; + } + if (frag_threshold != (u32) -1) { + /* + * Fragments (apart from the last one) are required to + * have even length. Make the fragmentation code + * simpler by stripping LSB should someone try to use + * odd threshold value. + */ + frag_threshold &= ~0x1; + } + changed |= WIPHY_PARAM_FRAG_THRESHOLD; + } + + if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { + rts_threshold = nla_get_u32( + info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); + changed |= WIPHY_PARAM_RTS_THRESHOLD; + } + + if (changed) { + u8 old_retry_short, old_retry_long; + u32 old_frag_threshold, old_rts_threshold; + + if (!rdev->ops->set_wiphy_params) { + result = -EOPNOTSUPP; + goto bad_res; + } + + old_retry_short = rdev->wiphy.retry_short; + old_retry_long = rdev->wiphy.retry_long; + old_frag_threshold = rdev->wiphy.frag_threshold; + old_rts_threshold = rdev->wiphy.rts_threshold; + + if (changed & WIPHY_PARAM_RETRY_SHORT) + rdev->wiphy.retry_short = retry_short; + if (changed & WIPHY_PARAM_RETRY_LONG) + rdev->wiphy.retry_long = retry_long; + if (changed & WIPHY_PARAM_FRAG_THRESHOLD) + rdev->wiphy.frag_threshold = frag_threshold; + if (changed & WIPHY_PARAM_RTS_THRESHOLD) + rdev->wiphy.rts_threshold = rts_threshold; + + result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed); + if (result) { + rdev->wiphy.retry_short = old_retry_short; + rdev->wiphy.retry_long = old_retry_long; + rdev->wiphy.frag_threshold = old_frag_threshold; + rdev->wiphy.rts_threshold = old_rts_threshold; + } + } bad_res: mutex_unlock(&rdev->mtx); diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 4e054ea9c0a0..3279e7f038dc 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -314,3 +314,154 @@ struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, } EXPORT_SYMBOL(cfg80211_wext_freq); + +int cfg80211_wext_siwrts(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *rts, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + u32 orts = wdev->wiphy->rts_threshold; + int err; + + if (rts->disabled || !rts->fixed) + wdev->wiphy->rts_threshold = (u32) -1; + else if (rts->value < 0) + return -EINVAL; + else + wdev->wiphy->rts_threshold = rts->value; + + err = rdev->ops->set_wiphy_params(wdev->wiphy, + WIPHY_PARAM_RTS_THRESHOLD); + if (err) + wdev->wiphy->rts_threshold = orts; + + return err; +} +EXPORT_SYMBOL(cfg80211_wext_siwrts); + +int cfg80211_wext_giwrts(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *rts, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + rts->value = wdev->wiphy->rts_threshold; + rts->disabled = rts->value == (u32) -1; + rts->fixed = 1; + + return 0; +} +EXPORT_SYMBOL(cfg80211_wext_giwrts); + +int cfg80211_wext_siwfrag(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *frag, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + u32 ofrag = wdev->wiphy->frag_threshold; + int err; + + if (frag->disabled || !frag->fixed) + wdev->wiphy->frag_threshold = (u32) -1; + else if (frag->value < 256) + return -EINVAL; + else { + /* Fragment length must be even, so strip LSB. */ + wdev->wiphy->frag_threshold = frag->value & ~0x1; + } + + err = rdev->ops->set_wiphy_params(wdev->wiphy, + WIPHY_PARAM_FRAG_THRESHOLD); + if (err) + wdev->wiphy->frag_threshold = ofrag; + + return err; +} +EXPORT_SYMBOL(cfg80211_wext_siwfrag); + +int cfg80211_wext_giwfrag(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *frag, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + frag->value = wdev->wiphy->frag_threshold; + frag->disabled = frag->value == (u32) -1; + frag->fixed = 1; + + return 0; +} +EXPORT_SYMBOL(cfg80211_wext_giwfrag); + +int cfg80211_wext_siwretry(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *retry, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + u32 changed = 0; + u8 olong = wdev->wiphy->retry_long; + u8 oshort = wdev->wiphy->retry_short; + int err; + + if (retry->disabled || + (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT) + return -EINVAL; + + if (retry->flags & IW_RETRY_LONG) { + wdev->wiphy->retry_long = retry->value; + changed |= WIPHY_PARAM_RETRY_LONG; + } else if (retry->flags & IW_RETRY_SHORT) { + wdev->wiphy->retry_short = retry->value; + changed |= WIPHY_PARAM_RETRY_SHORT; + } else { + wdev->wiphy->retry_short = retry->value; + wdev->wiphy->retry_long = retry->value; + changed |= WIPHY_PARAM_RETRY_LONG; + changed |= WIPHY_PARAM_RETRY_SHORT; + } + + if (!changed) + return 0; + + err = rdev->ops->set_wiphy_params(wdev->wiphy, changed); + if (err) { + wdev->wiphy->retry_short = oshort; + wdev->wiphy->retry_long = olong; + } + + return err; +} +EXPORT_SYMBOL(cfg80211_wext_siwretry); + +int cfg80211_wext_giwretry(struct net_device *dev, + struct iw_request_info *info, + struct iw_param *retry, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + + retry->disabled = 0; + + if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) { + /* + * First return short value, iwconfig will ask long value + * later if needed + */ + retry->flags |= IW_RETRY_LIMIT; + retry->value = wdev->wiphy->retry_short; + if (wdev->wiphy->retry_long != wdev->wiphy->retry_short) + retry->flags |= IW_RETRY_LONG; + + return 0; + } + + if (retry->flags & IW_RETRY_LONG) { + retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG; + retry->value = wdev->wiphy->retry_long; + } + + return 0; +} +EXPORT_SYMBOL(cfg80211_wext_giwretry); -- cgit v1.2.3 From ba44cb7226afd4e19308c1d8a90e8b7c566c0d8b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 20 Apr 2009 18:49:39 +0200 Subject: cfg80211: mark all WEXT handlers _GPL The fact that these are exported is a technical detail of the conversion period -- we don't want anybody to start relying on these. Ultimately we want things to use cfg80211 only, and once everything that is in wext is converted to cfg80211 drivers will not need to touch wext _at all_. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/scan.c | 4 ++-- net/wireless/wext-compat.c | 24 ++++++++++++------------ 2 files changed, 14 insertions(+), 14 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 1396248dc5cc..723aeb3d9462 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -653,7 +653,7 @@ int cfg80211_wext_siwscan(struct net_device *dev, cfg80211_put_dev(rdev); return err; } -EXPORT_SYMBOL(cfg80211_wext_siwscan); +EXPORT_SYMBOL_GPL(cfg80211_wext_siwscan); static void ieee80211_scan_add_ies(struct iw_request_info *info, struct cfg80211_bss *bss, @@ -962,5 +962,5 @@ int cfg80211_wext_giwscan(struct net_device *dev, cfg80211_put_dev(rdev); return res; } -EXPORT_SYMBOL(cfg80211_wext_giwscan); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwscan); #endif diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 3279e7f038dc..5ef82f2ca88f 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -57,7 +57,7 @@ int cfg80211_wext_giwname(struct net_device *dev, return 0; } -EXPORT_SYMBOL(cfg80211_wext_giwname); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwname); int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, u32 *mode, char *extra) @@ -108,7 +108,7 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, return ret; } -EXPORT_SYMBOL(cfg80211_wext_siwmode); +EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode); int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, u32 *mode, char *extra) @@ -143,7 +143,7 @@ int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, } return 0; } -EXPORT_SYMBOL(cfg80211_wext_giwmode); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode); int cfg80211_wext_giwrange(struct net_device *dev, @@ -239,7 +239,7 @@ int cfg80211_wext_giwrange(struct net_device *dev, return 0; } -EXPORT_SYMBOL(cfg80211_wext_giwrange); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange); int cfg80211_wext_siwmlme(struct net_device *dev, struct iw_request_info *info, @@ -283,7 +283,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev, return -EOPNOTSUPP; } } -EXPORT_SYMBOL(cfg80211_wext_siwmlme); +EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme); /** @@ -313,7 +313,7 @@ struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, } } -EXPORT_SYMBOL(cfg80211_wext_freq); +EXPORT_SYMBOL_GPL(cfg80211_wext_freq); int cfg80211_wext_siwrts(struct net_device *dev, struct iw_request_info *info, @@ -338,7 +338,7 @@ int cfg80211_wext_siwrts(struct net_device *dev, return err; } -EXPORT_SYMBOL(cfg80211_wext_siwrts); +EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts); int cfg80211_wext_giwrts(struct net_device *dev, struct iw_request_info *info, @@ -352,7 +352,7 @@ int cfg80211_wext_giwrts(struct net_device *dev, return 0; } -EXPORT_SYMBOL(cfg80211_wext_giwrts); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts); int cfg80211_wext_siwfrag(struct net_device *dev, struct iw_request_info *info, @@ -379,7 +379,7 @@ int cfg80211_wext_siwfrag(struct net_device *dev, return err; } -EXPORT_SYMBOL(cfg80211_wext_siwfrag); +EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag); int cfg80211_wext_giwfrag(struct net_device *dev, struct iw_request_info *info, @@ -393,7 +393,7 @@ int cfg80211_wext_giwfrag(struct net_device *dev, return 0; } -EXPORT_SYMBOL(cfg80211_wext_giwfrag); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag); int cfg80211_wext_siwretry(struct net_device *dev, struct iw_request_info *info, @@ -434,7 +434,7 @@ int cfg80211_wext_siwretry(struct net_device *dev, return err; } -EXPORT_SYMBOL(cfg80211_wext_siwretry); +EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry); int cfg80211_wext_giwretry(struct net_device *dev, struct iw_request_info *info, @@ -464,4 +464,4 @@ int cfg80211_wext_giwretry(struct net_device *dev, return 0; } -EXPORT_SYMBOL(cfg80211_wext_giwretry); +EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry); -- cgit v1.2.3 From 0b258582fef3a9b15b2372d99164859361faa8db Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 8 May 2009 09:42:33 +0200 Subject: cfg80211: fix wext iw_freq parsing The function to parse a struct iw_freq has a stupid bug, it returns NULL when the channel cannot be found at all, but NULL is supposed to mean "auto". Fix this by checking the return value of ieee80211_get_channel() and returning ERR_PTR(-EINVAL) if it returned NULL (channel not found). This fixes an issue where you could say (in IBSS mode) iwconfig wlan0 channel 21 and it would use channel 1 instead because that's the first available channel with IBSS allowed (which is what the "auto" setting uses). Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/wext-compat.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 5ef82f2ca88f..abf6b0a047d8 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -296,22 +296,34 @@ EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme); struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq) { + struct ieee80211_channel *chan; + int f; + + /* + * Parse frequency - return NULL for auto and + * -EINVAL for impossible things. + */ if (freq->e == 0) { if (freq->m < 0) return NULL; - else - return ieee80211_get_channel(wiphy, - ieee80211_channel_to_frequency(freq->m)); + f = ieee80211_channel_to_frequency(freq->m); } else { int i, div = 1000000; for (i = 0; i < freq->e; i++) div /= 10; - if (div > 0) - return ieee80211_get_channel(wiphy, freq->m / div); - else + if (div <= 0) return ERR_PTR(-EINVAL); + f = freq->m / div; } + /* + * Look up channel struct and return -EINVAL when + * it cannot be found. + */ + chan = ieee80211_get_channel(wiphy, f); + if (!chan) + return ERR_PTR(-EINVAL); + return chan; } EXPORT_SYMBOL_GPL(cfg80211_wext_freq); -- cgit v1.2.3 From 08645126dd24872c2e27014f93968f7312e29176 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 11 May 2009 13:54:58 +0200 Subject: cfg80211: implement wext key handling Move key handling wireless extension ioctls from mac80211 to cfg80211 so that all drivers that implement the cfg80211 operations get wext compatibility. Note that this drops the SIOCGIWENCODE ioctl support for getting IW_ENCODE_RESTRICTED/IW_ENCODE_OPEN. This means that iwconfig will no longer report "Security mode:open" or "Security mode:restricted" for mac80211. However, what we displayed there (the authentication algo used) was actually wrong -- linux/wireless.h states that this setting is meant to differentiate between "Refuse non-encoded packets" and "Accept non-encoded packets". (Combined with "cfg80211: fix a couple of bugs with key ioctls". -- JWL) Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 10 ++ net/mac80211/wext.c | 279 +-------------------------------------------- net/wireless/core.c | 6 +- net/wireless/core.h | 6 +- net/wireless/nl80211.c | 57 +++------ net/wireless/util.c | 45 ++++++++ net/wireless/wext-compat.c | 257 ++++++++++++++++++++++++++++++++++++++++- 7 files changed, 343 insertions(+), 317 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 4c748935ce5f..e69e6c66dd16 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1150,6 +1150,7 @@ struct wireless_dev { struct { struct cfg80211_ibss_params ibss; u8 bssid[ETH_ALEN]; + s8 default_key, default_mgmt_key; } wext; #endif }; @@ -1400,6 +1401,15 @@ int cfg80211_wext_siwretry(struct net_device *dev, int cfg80211_wext_giwretry(struct net_device *dev, struct iw_request_info *info, struct iw_param *retry, char *extra); +int cfg80211_wext_siwencodeext(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *erq, char *extra); +int cfg80211_wext_siwencode(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *erq, char *keybuf); +int cfg80211_wext_giwencode(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *erq, char *keybuf); /* * callbacks for asynchronous cfg80211 methods, notification diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index 6b4eb8d43a4e..d84502644686 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -27,100 +27,6 @@ #include "aes_ccm.h" -static int ieee80211_set_encryption(struct ieee80211_sub_if_data *sdata, u8 *sta_addr, - int idx, int alg, int remove, - int set_tx_key, const u8 *_key, - size_t key_len) -{ - struct ieee80211_local *local = sdata->local; - struct sta_info *sta; - struct ieee80211_key *key; - int err; - - if (alg == ALG_AES_CMAC) { - if (idx < NUM_DEFAULT_KEYS || - idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) { - printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d " - "(BIP)\n", sdata->dev->name, idx); - return -EINVAL; - } - } else if (idx < 0 || idx >= NUM_DEFAULT_KEYS) { - printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n", - sdata->dev->name, idx); - return -EINVAL; - } - - if (remove) { - rcu_read_lock(); - - err = 0; - - if (is_broadcast_ether_addr(sta_addr)) { - key = sdata->keys[idx]; - } else { - sta = sta_info_get(local, sta_addr); - if (!sta) { - err = -ENOENT; - goto out_unlock; - } - key = sta->key; - } - - ieee80211_key_free(key); - } else { - key = ieee80211_key_alloc(alg, idx, key_len, _key); - if (!key) - return -ENOMEM; - - sta = NULL; - err = 0; - - rcu_read_lock(); - - if (!is_broadcast_ether_addr(sta_addr)) { - set_tx_key = 0; - /* - * According to the standard, the key index of a - * pairwise key must be zero. However, some AP are - * broken when it comes to WEP key indices, so we - * work around this. - */ - if (idx != 0 && alg != ALG_WEP) { - ieee80211_key_free(key); - err = -EINVAL; - goto out_unlock; - } - - sta = sta_info_get(local, sta_addr); - if (!sta) { - ieee80211_key_free(key); - err = -ENOENT; - goto out_unlock; - } - } - - if (alg == ALG_WEP && - key_len != LEN_WEP40 && key_len != LEN_WEP104) { - ieee80211_key_free(key); - err = -EINVAL; - goto out_unlock; - } - - ieee80211_key_link(key, sdata, sta); - - if (set_tx_key || (!sta && !sdata->default_key && key)) - ieee80211_set_default_key(sdata, idx); - if (alg == ALG_AES_CMAC && - (set_tx_key || (!sta && !sdata->default_mgmt_key && key))) - ieee80211_set_default_mgmt_key(sdata, idx); - } - - out_unlock: - rcu_read_unlock(); - - return err; -} - static int ieee80211_ioctl_siwgenie(struct net_device *dev, struct iw_request_info *info, struct iw_point *data, char *extra) @@ -472,109 +378,6 @@ static int ieee80211_ioctl_giwtxpower(struct net_device *dev, return 0; } -static int ieee80211_ioctl_siwencode(struct net_device *dev, - struct iw_request_info *info, - struct iw_point *erq, char *keybuf) -{ - struct ieee80211_sub_if_data *sdata; - int idx, i, alg = ALG_WEP; - u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - int remove = 0, ret; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - idx = erq->flags & IW_ENCODE_INDEX; - if (idx == 0) { - if (sdata->default_key) - for (i = 0; i < NUM_DEFAULT_KEYS; i++) { - if (sdata->default_key == sdata->keys[i]) { - idx = i; - break; - } - } - } else if (idx < 1 || idx > 4) - return -EINVAL; - else - idx--; - - if (erq->flags & IW_ENCODE_DISABLED) - remove = 1; - else if (erq->length == 0) { - /* No key data - just set the default TX key index */ - ieee80211_set_default_key(sdata, idx); - return 0; - } - - ret = ieee80211_set_encryption( - sdata, bcaddr, - idx, alg, remove, - !sdata->default_key, - keybuf, erq->length); - - if (!ret && sdata->vif.type == NL80211_IFTYPE_STATION) { - if (remove) - sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED; - else - sdata->u.mgd.flags |= IEEE80211_STA_TKIP_WEP_USED; - } - - return ret; -} - - -static int ieee80211_ioctl_giwencode(struct net_device *dev, - struct iw_request_info *info, - struct iw_point *erq, char *key) -{ - struct ieee80211_sub_if_data *sdata; - int idx, i; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - idx = erq->flags & IW_ENCODE_INDEX; - if (idx < 1 || idx > 4) { - idx = -1; - if (!sdata->default_key) - idx = 0; - else for (i = 0; i < NUM_DEFAULT_KEYS; i++) { - if (sdata->default_key == sdata->keys[i]) { - idx = i; - break; - } - } - if (idx < 0) - return -EINVAL; - } else - idx--; - - erq->flags = idx + 1; - - if (!sdata->keys[idx]) { - erq->length = 0; - erq->flags |= IW_ENCODE_DISABLED; - return 0; - } - - memcpy(key, sdata->keys[idx]->conf.key, - min_t(int, erq->length, sdata->keys[idx]->conf.keylen)); - erq->length = sdata->keys[idx]->conf.keylen; - erq->flags |= IW_ENCODE_ENABLED; - - if (sdata->vif.type == NL80211_IFTYPE_STATION) { - switch (sdata->u.mgd.auth_alg) { - case WLAN_AUTH_OPEN: - case WLAN_AUTH_LEAP: - erq->flags |= IW_ENCODE_OPEN; - break; - case WLAN_AUTH_SHARED_KEY: - erq->flags |= IW_ENCODE_RESTRICTED; - break; - } - } - - return 0; -} - static int ieee80211_ioctl_siwpower(struct net_device *dev, struct iw_request_info *info, struct iw_param *wrq, @@ -809,82 +612,6 @@ static int ieee80211_ioctl_giwauth(struct net_device *dev, } -static int ieee80211_ioctl_siwencodeext(struct net_device *dev, - struct iw_request_info *info, - struct iw_point *erq, char *extra) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; - int uninitialized_var(alg), idx, i, remove = 0; - - switch (ext->alg) { - case IW_ENCODE_ALG_NONE: - remove = 1; - break; - case IW_ENCODE_ALG_WEP: - alg = ALG_WEP; - break; - case IW_ENCODE_ALG_TKIP: - alg = ALG_TKIP; - break; - case IW_ENCODE_ALG_CCMP: - alg = ALG_CCMP; - break; - case IW_ENCODE_ALG_AES_CMAC: - alg = ALG_AES_CMAC; - break; - default: - return -EOPNOTSUPP; - } - - if (erq->flags & IW_ENCODE_DISABLED) - remove = 1; - - idx = erq->flags & IW_ENCODE_INDEX; - if (alg == ALG_AES_CMAC) { - if (idx < NUM_DEFAULT_KEYS + 1 || - idx > NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) { - idx = -1; - if (!sdata->default_mgmt_key) - idx = 0; - else for (i = NUM_DEFAULT_KEYS; - i < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS; - i++) { - if (sdata->default_mgmt_key == sdata->keys[i]) - { - idx = i; - break; - } - } - if (idx < 0) - return -EINVAL; - } else - idx--; - } else { - if (idx < 1 || idx > 4) { - idx = -1; - if (!sdata->default_key) - idx = 0; - else for (i = 0; i < NUM_DEFAULT_KEYS; i++) { - if (sdata->default_key == sdata->keys[i]) { - idx = i; - break; - } - } - if (idx < 0) - return -EINVAL; - } else - idx--; - } - - return ieee80211_set_encryption(sdata, ext->addr.sa_data, idx, alg, - remove, - ext->ext_flags & - IW_ENCODE_EXT_SET_TX_KEY, - ext->key, ext->key_len); -} - - /* Structures to export the Wireless Handlers */ static const iw_handler ieee80211_handler[] = @@ -931,8 +658,8 @@ static const iw_handler ieee80211_handler[] = (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */ (iw_handler) cfg80211_wext_siwretry, /* SIOCSIWRETRY */ (iw_handler) cfg80211_wext_giwretry, /* SIOCGIWRETRY */ - (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */ - (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */ + (iw_handler) cfg80211_wext_siwencode, /* SIOCSIWENCODE */ + (iw_handler) cfg80211_wext_giwencode, /* SIOCGIWENCODE */ (iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */ (iw_handler) ieee80211_ioctl_giwpower, /* SIOCGIWPOWER */ (iw_handler) NULL, /* -- hole -- */ @@ -941,7 +668,7 @@ static const iw_handler ieee80211_handler[] = (iw_handler) NULL, /* SIOCGIWGENIE */ (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */ (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */ - (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */ + (iw_handler) cfg80211_wext_siwencodeext, /* SIOCSIWENCODEEXT */ (iw_handler) NULL, /* SIOCGIWENCODEEXT */ (iw_handler) NULL, /* SIOCSIWPMKSA */ (iw_handler) NULL, /* -- hole -- */ diff --git a/net/wireless/core.c b/net/wireless/core.c index 15b2a1794805..47c20eb0c04d 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -1,7 +1,7 @@ /* * This is the linux wireless configuration interface. * - * Copyright 2006-2008 Johannes Berg + * Copyright 2006-2009 Johannes Berg */ #include @@ -457,6 +457,10 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, "symlink to netdev!\n"); } dev->ieee80211_ptr->netdev = dev; +#ifdef CONFIG_WIRELESS_EXT + dev->ieee80211_ptr->wext.default_key = -1; + dev->ieee80211_ptr->wext.default_mgmt_key = -1; +#endif mutex_unlock(&rdev->devlist_mtx); break; case NETDEV_GOING_DOWN: diff --git a/net/wireless/core.h b/net/wireless/core.h index 3e49d3399311..f14b6c5f4221 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -1,7 +1,7 @@ /* * Wireless configuration interface internals. * - * Copyright 2006, 2007 Johannes Berg + * Copyright 2006-2009 Johannes Berg */ #ifndef __NET_WIRELESS_CORE_H #define __NET_WIRELESS_CORE_H @@ -151,4 +151,8 @@ void cfg80211_clear_ibss(struct net_device *dev, bool nowext); int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, struct net_device *dev, bool nowext); +/* internal helpers */ +int cfg80211_validate_key_settings(struct key_params *params, int key_idx, + const u8 *mac_addr); + #endif /* __NET_WIRELESS_CORE_H */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index a39e4644778b..f88dbbec7521 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1,7 +1,7 @@ /* * This is the new netlink-based wireless configuration interface. * - * Copyright 2006, 2007 Johannes Berg + * Copyright 2006-2009 Johannes Berg */ #include @@ -1073,6 +1073,14 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) } err = func(&drv->wiphy, dev, key_idx); +#ifdef CONFIG_WIRELESS_EXT + if (!err) { + if (func == drv->ops->set_default_key) + dev->ieee80211_ptr->wext.default_key = key_idx; + else + dev->ieee80211_ptr->wext.default_mgmt_key = key_idx; + } +#endif out: cfg80211_put_dev(drv); @@ -1111,45 +1119,9 @@ 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_idx > 5) + if (cfg80211_validate_key_settings(¶ms, key_idx, 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 && - params.cipher != WLAN_CIPHER_SUITE_WEP40 && - params.cipher != WLAN_CIPHER_SUITE_WEP104) - return -EINVAL; - - /* TODO: add definitions for the lengths to linux/ieee80211.h */ - switch (params.cipher) { - case WLAN_CIPHER_SUITE_WEP40: - if (params.key_len != 5) - return -EINVAL; - break; - case WLAN_CIPHER_SUITE_TKIP: - if (params.key_len != 32) - return -EINVAL; - break; - case WLAN_CIPHER_SUITE_CCMP: - if (params.key_len != 16) - return -EINVAL; - break; - case WLAN_CIPHER_SUITE_WEP104: - if (params.key_len != 13) - return -EINVAL; - break; - case WLAN_CIPHER_SUITE_AES_CMAC: - if (params.key_len != 16) - return -EINVAL; - break; - default: - return -EINVAL; - } - rtnl_lock(); err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); @@ -1210,6 +1182,15 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); +#ifdef CONFIG_WIRELESS_EXT + if (!err) { + if (key_idx == dev->ieee80211_ptr->wext.default_key) + dev->ieee80211_ptr->wext.default_key = -1; + else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key) + dev->ieee80211_ptr->wext.default_mgmt_key = -1; + } +#endif + out: cfg80211_put_dev(drv); dev_put(dev); diff --git a/net/wireless/util.c b/net/wireless/util.c index 5f7e997195c7..beb226e78cd7 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -138,3 +138,48 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy) if (wiphy->bands[band]) set_mandatory_flags_band(wiphy->bands[band], band); } + +int cfg80211_validate_key_settings(struct key_params *params, int key_idx, + const u8 *mac_addr) +{ + if (key_idx > 5) + 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 && + params->cipher != WLAN_CIPHER_SUITE_WEP40 && + params->cipher != WLAN_CIPHER_SUITE_WEP104) + return -EINVAL; + + /* TODO: add definitions for the lengths to linux/ieee80211.h */ + switch (params->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + if (params->key_len != 5) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_TKIP: + if (params->key_len != 32) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_CCMP: + if (params->key_len != 16) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_WEP104: + if (params->key_len != 13) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + if (params->key_len != 16) + return -EINVAL; + break; + default: + return -EINVAL; + } + + return 0; +} diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index abf6b0a047d8..ffc98a8d6e5c 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -5,12 +5,13 @@ * into cfg80211, when that happens all the exports here go away and * we directly assign the wireless handlers of wireless interfaces. * - * Copyright 2008 Johannes Berg + * Copyright 2008-2009 Johannes Berg */ #include #include #include +#include #include #include #include "core.h" @@ -477,3 +478,257 @@ int cfg80211_wext_giwretry(struct net_device *dev, return 0; } 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 wireless_dev *wdev = dev->ieee80211_ptr; + int err; + + if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { + if (!rdev->ops->set_default_mgmt_key) + return -EOPNOTSUPP; + + if (idx < 4 || idx > 5) + return -EINVAL; + } else if (idx < 0 || idx > 3) + return -EINVAL; + + if (remove) { + err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr); + if (!err) { + if (idx == wdev->wext.default_key) + wdev->wext.default_key = -1; + else if (idx == wdev->wext.default_mgmt_key) + wdev->wext.default_mgmt_key = -1; + } + return err; + } else { + if (addr) + tx_key = false; + + if (cfg80211_validate_key_settings(params, idx, addr)) + return -EINVAL; + + err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params); + if (err) + return err; + + if (tx_key || (!addr && wdev->wext.default_key == -1)) { + err = rdev->ops->set_default_key(&rdev->wiphy, + dev, idx); + if (!err) + wdev->wext.default_key = idx; + return err; + } + + if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC && + (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) { + err = rdev->ops->set_default_mgmt_key(&rdev->wiphy, + dev, idx); + if (!err) + wdev->wext.default_mgmt_key = idx; + return err; + } + + return 0; + } +} + +int cfg80211_wext_siwencode(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *erq, char *keybuf) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + int idx, err; + bool remove = false; + struct key_params params; + + /* no use -- only MFP (set_default_mgmt_key) is optional */ + if (!rdev->ops->del_key || + !rdev->ops->add_key || + !rdev->ops->set_default_key) + return -EOPNOTSUPP; + + idx = erq->flags & IW_ENCODE_INDEX; + if (idx == 0) { + idx = wdev->wext.default_key; + if (idx < 0) + idx = 0; + } else if (idx < 1 || idx > 4) + return -EINVAL; + else + idx--; + + if (erq->flags & IW_ENCODE_DISABLED) + remove = true; + else if (erq->length == 0) { + /* No key data - just set the default TX key index */ + err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx); + if (!err) + wdev->wext.default_key = idx; + return err; + } + + memset(¶ms, 0, sizeof(params)); + params.key = keybuf; + params.key_len = erq->length; + if (erq->length == 5) + params.cipher = WLAN_CIPHER_SUITE_WEP40; + else if (erq->length == 13) + params.cipher = WLAN_CIPHER_SUITE_WEP104; + else if (!remove) + return -EINVAL; + + return cfg80211_set_encryption(rdev, dev, NULL, remove, + wdev->wext.default_key == -1, + idx, ¶ms); +} +EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode); + +int cfg80211_wext_siwencodeext(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *erq, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct iw_encode_ext *ext = (struct iw_encode_ext *) extra; + const u8 *addr; + int idx; + bool remove = false; + struct key_params params; + u32 cipher; + + /* no use -- only MFP (set_default_mgmt_key) is optional */ + if (!rdev->ops->del_key || + !rdev->ops->add_key || + !rdev->ops->set_default_key) + return -EOPNOTSUPP; + + switch (ext->alg) { + case IW_ENCODE_ALG_NONE: + remove = true; + cipher = 0; + break; + case IW_ENCODE_ALG_WEP: + if (ext->key_len == 5) + cipher = WLAN_CIPHER_SUITE_WEP40; + else if (ext->key_len == 13) + cipher = WLAN_CIPHER_SUITE_WEP104; + else + return -EINVAL; + break; + case IW_ENCODE_ALG_TKIP: + cipher = WLAN_CIPHER_SUITE_TKIP; + break; + case IW_ENCODE_ALG_CCMP: + cipher = WLAN_CIPHER_SUITE_CCMP; + break; + case IW_ENCODE_ALG_AES_CMAC: + cipher = WLAN_CIPHER_SUITE_AES_CMAC; + break; + default: + return -EOPNOTSUPP; + } + + if (erq->flags & IW_ENCODE_DISABLED) + remove = true; + + idx = erq->flags & IW_ENCODE_INDEX; + if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) { + if (idx < 4 || idx > 5) { + idx = wdev->wext.default_mgmt_key; + if (idx < 0) + return -EINVAL; + } else + idx--; + } else { + if (idx < 1 || idx > 4) { + idx = wdev->wext.default_key; + if (idx < 0) + return -EINVAL; + } else + idx--; + } + + addr = ext->addr.sa_data; + if (is_broadcast_ether_addr(addr)) + addr = NULL; + + memset(¶ms, 0, sizeof(params)); + params.key = ext->key; + params.key_len = ext->key_len; + params.cipher = cipher; + + return cfg80211_set_encryption( + rdev, dev, addr, remove, + ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, + idx, ¶ms); +} +EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext); + +struct giwencode_cookie { + size_t buflen; + char *keybuf; +}; + +static void giwencode_get_key_cb(void *cookie, struct key_params *params) +{ + struct giwencode_cookie *data = cookie; + + if (!params->key) { + data->buflen = 0; + return; + } + + data->buflen = min_t(size_t, data->buflen, params->key_len); + memcpy(data->keybuf, params->key, data->buflen); +} + +int cfg80211_wext_giwencode(struct net_device *dev, + struct iw_request_info *info, + struct iw_point *erq, char *keybuf) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + int idx, err; + struct giwencode_cookie data = { + .keybuf = keybuf, + .buflen = erq->length, + }; + + if (!rdev->ops->get_key) + return -EOPNOTSUPP; + + idx = erq->flags & IW_ENCODE_INDEX; + if (idx == 0) { + idx = wdev->wext.default_key; + if (idx < 0) + idx = 0; + } else if (idx < 1 || idx > 4) + return -EINVAL; + else + idx--; + + erq->flags = idx + 1; + + err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data, + giwencode_get_key_cb); + if (!err) { + erq->length = data.buflen; + erq->flags |= IW_ENCODE_ENABLED; + return 0; + } + + if (err == -ENOENT) { + erq->flags |= IW_ENCODE_DISABLED; + erq->length = 0; + return 0; + } + + return err; +} +EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode); -- cgit v1.2.3 From faa8fdc85347cc76d87b43ea718785661c54f656 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Mon, 11 May 2009 21:57:58 +0300 Subject: nl80211: Add RSC configuration for new keys When setting a key with NL80211_CMD_NEW_KEY, we should allow the key sequence number (RSC) to be set in order to allow replay protection to work correctly for group keys. This patch documents this use for nl80211 and adds the couple of missing pieces in nl80211/cfg80211 and mac80211 to support this. In addition, WEXT SIOCSIWENCODEEXT compat processing in cfg80211 is extended to handle the RSC (this was already specified in WEXT, but just not implemented in cfg80211/mac80211). Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville --- include/linux/nl80211.h | 4 ++-- net/mac80211/cfg.c | 3 ++- net/mac80211/key.c | 21 ++++++++++++++++++++- net/mac80211/key.h | 3 ++- net/wireless/nl80211.c | 5 +++++ net/wireless/wext-compat.c | 5 +++++ 6 files changed, 36 insertions(+), 5 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h index 2781525b03d5..dbea93b694e5 100644 --- a/include/linux/nl80211.h +++ b/include/linux/nl80211.h @@ -79,8 +79,8 @@ * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT, * %NL80211_ATTR_KEY_DEFAULT_MGMT, or %NL80211_ATTR_KEY_THRESHOLD. * @NL80211_CMD_NEW_KEY: add a key with given %NL80211_ATTR_KEY_DATA, - * %NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC and %NL80211_ATTR_KEY_CIPHER - * attributes. + * %NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC, %NL80211_ATTR_KEY_CIPHER, + * and %NL80211_ATTR_KEY_SEQ attributes. * @NL80211_CMD_DEL_KEY: delete a key identified by %NL80211_ATTR_KEY_IDX * or %NL80211_ATTR_MAC. * diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 6464bfd232c9..77e9ff5ec4f3 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -141,7 +141,8 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, return -EINVAL; } - key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key); + key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key, + params->seq_len, params->seq); if (!key) return -ENOMEM; diff --git a/net/mac80211/key.c b/net/mac80211/key.c index b7e1350273bb..827ea8e6ee0a 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -290,9 +290,11 @@ static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, int idx, size_t key_len, - const u8 *key_data) + const u8 *key_data, + size_t seq_len, const u8 *seq) { struct ieee80211_key *key; + int i, j; BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS); @@ -318,14 +320,31 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, case ALG_TKIP: key->conf.iv_len = TKIP_IV_LEN; key->conf.icv_len = TKIP_ICV_LEN; + if (seq && seq_len == 6) { + for (i = 0; i < NUM_RX_DATA_QUEUES; i++) { + key->u.tkip.rx[i].iv32 = + get_unaligned_le32(&seq[2]); + key->u.tkip.rx[i].iv16 = + get_unaligned_le16(seq); + } + } break; case ALG_CCMP: key->conf.iv_len = CCMP_HDR_LEN; key->conf.icv_len = CCMP_MIC_LEN; + if (seq && seq_len == CCMP_PN_LEN) { + for (i = 0; i < NUM_RX_DATA_QUEUES; i++) + for (j = 0; j < CCMP_PN_LEN; j++) + key->u.ccmp.rx_pn[i][j] = + seq[CCMP_PN_LEN - j - 1]; + } break; case ALG_AES_CMAC: key->conf.iv_len = 0; key->conf.icv_len = sizeof(struct ieee80211_mmie); + if (seq && seq_len == 6) + for (j = 0; j < 6; j++) + key->u.aes_cmac.rx_pn[j] = seq[6 - j - 1]; break; } memcpy(key->conf.key, key_data, key_len); diff --git a/net/mac80211/key.h b/net/mac80211/key.h index 215d3ef42a4f..9572e00f532c 100644 --- a/net/mac80211/key.h +++ b/net/mac80211/key.h @@ -144,7 +144,8 @@ struct ieee80211_key { struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, int idx, size_t key_len, - const u8 *key_data); + const u8 *key_data, + size_t seq_len, const u8 *seq); /* * Insert a key into data structures (sdata, sta if necessary) * to make it used, free old key. diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index cad281390cfa..f0fec2f49828 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1115,6 +1115,11 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); } + if (info->attrs[NL80211_ATTR_KEY_SEQ]) { + params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); + params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); + } + if (info->attrs[NL80211_ATTR_KEY_IDX]) key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index ffc98a8d6e5c..f98090b90fbf 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -663,6 +663,11 @@ int cfg80211_wext_siwencodeext(struct net_device *dev, params.key_len = ext->key_len; params.cipher = cipher; + if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) { + params.seq = ext->rx_seq; + params.seq_len = 6; + } + return cfg80211_set_encryption( rdev, dev, addr, remove, ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY, -- cgit v1.2.3 From e3da574a0ddd3e90a1e2b788b84b94bc17a75172 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 18 May 2009 19:56:36 +0200 Subject: cfg80211: allow wext to remove keys that don't exist Some applications using wireless extensions expect to be able to remove a key that doesn't exist. One example is wpa_supplicant which doesn't actually change behaviour when running into an error while trying to do that, but it prints an error message which users interpret as wpa_supplicant having problems. The safe thing to do is not change the behaviour of wireless extensions any more, so when the driver reports -ENOENT let the wext bridge code return success to userspace. To guarantee this, also document that drivers should return -ENOENT when the key doesn't exist. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 5 +++-- net/wireless/wext-compat.c | 7 +++++++ 2 files changed, 10 insertions(+), 2 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 81a3bfa45471..389f1d20adf4 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -781,10 +781,11 @@ enum wiphy_params_flags { * @get_key: get information about the key with the given parameters. * @mac_addr will be %NULL when requesting information for a group * key. All pointers given to the @callback function need not be valid - * after it returns. + * after it returns. This function should return an error if it is + * not possible to retrieve the key, -ENOENT if it doesn't exist. * * @del_key: remove a key given the @mac_addr (%NULL for a group key) - * and @key_index + * and @key_index, return -ENOENT if the key doesn't exist. * * @set_default_key: set the default key on an interface * diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index f98090b90fbf..711e00a0c9b5 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -504,6 +504,13 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev, else if (idx == wdev->wext.default_mgmt_key) wdev->wext.default_mgmt_key = -1; } + /* + * Applications using wireless extensions expect to be + * able to delete keys that don't exist, so allow that. + */ + if (err == -ENOENT) + return 0; + return err; } else { if (addr) -- cgit v1.2.3 From 7643a2c3fcc13cd6fbd731f214463547383418ae Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 2 Jun 2009 13:01:39 +0200 Subject: cfg80211: move txpower wext from mac80211 This patch introduces new cfg80211 API to set the TX power via cfg80211, puts the wext code into cfg80211 and updates mac80211 to use all that. The -ENETDOWN bits are a hack but will go away soon. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 30 +++++++++++++++++ net/mac80211/cfg.c | 54 +++++++++++++++++++++++++++++++ net/mac80211/wext.c | 80 ++-------------------------------------------- net/wireless/wext-compat.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 166 insertions(+), 78 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f20da7d63b1e..8b8e4b893625 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -751,6 +751,21 @@ enum wiphy_params_flags { WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, }; +/** + * enum tx_power_setting - TX power adjustment + * + * @TX_POWER_AUTOMATIC: the dbm parameter is ignored + * @TX_POWER_LIMITED: limit TX power by the dbm parameter + * @TX_POWER_FIXED: fix TX power to the dbm parameter + * @TX_POWER_OFF: turn off completely (will go away) + */ +enum tx_power_setting { + TX_POWER_AUTOMATIC, + TX_POWER_LIMITED, + TX_POWER_FIXED, + TX_POWER_OFF, +}; + /** * struct cfg80211_ops - backend description for wireless configuration * @@ -837,6 +852,11 @@ enum wiphy_params_flags { * @changed bitfield (see &enum wiphy_params_flags) describes which values * have changed. The actual parameter values are available in * struct wiphy. If returning an error, no value should be changed. + * + * @set_tx_power: set the transmit power according to the parameters + * @get_tx_power: store the current TX power into the dbm variable; + * return 0 if successful; or -ENETDOWN if successful but power + * is disabled (this will go away) */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -928,6 +948,10 @@ struct cfg80211_ops { int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); + + int (*set_tx_power)(struct wiphy *wiphy, + enum tx_power_setting type, int dbm); + int (*get_tx_power)(struct wiphy *wiphy, int *dbm); }; /* @@ -1451,6 +1475,12 @@ int cfg80211_wext_siwencode(struct net_device *dev, int cfg80211_wext_giwencode(struct net_device *dev, struct iw_request_info *info, struct iw_point *erq, char *keybuf); +int cfg80211_wext_siwtxpower(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *data, char *keybuf); +int cfg80211_wext_giwtxpower(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *data, char *keybuf); /* * callbacks for asynchronous cfg80211 methods, notification diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index d2fc18c1ae0d..81258acf48bc 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1334,6 +1334,58 @@ static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) return 0; } +static int ieee80211_set_tx_power(struct wiphy *wiphy, + enum tx_power_setting type, int dbm) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_channel *chan = local->hw.conf.channel; + u32 changes = 0; + bool radio_enabled = true; + + switch (type) { + case TX_POWER_AUTOMATIC: + local->user_power_level = -1; + break; + case TX_POWER_LIMITED: + if (dbm < 0) + return -EINVAL; + local->user_power_level = dbm; + break; + case TX_POWER_FIXED: + if (dbm < 0) + return -EINVAL; + /* TODO: move to cfg80211 when it knows the channel */ + if (dbm > chan->max_power) + return -EINVAL; + local->user_power_level = dbm; + break; + case TX_POWER_OFF: + radio_enabled = false; + break; + } + + if (radio_enabled != local->hw.conf.radio_enabled) { + changes |= IEEE80211_CONF_CHANGE_RADIO_ENABLED; + local->hw.conf.radio_enabled = radio_enabled; + } + + ieee80211_hw_config(local, changes); + + return 0; +} + +static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + *dbm = local->hw.conf.power_level; + + if (!local->hw.conf.radio_enabled) + return -ENETDOWN; + + return 0; +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1373,4 +1425,6 @@ struct cfg80211_ops mac80211_config_ops = { .join_ibss = ieee80211_join_ibss, .leave_ibss = ieee80211_leave_ibss, .set_wiphy_params = ieee80211_set_wiphy_params, + .set_tx_power = ieee80211_set_tx_power, + .get_tx_power = ieee80211_get_tx_power, }; diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index a01154e127f0..d2d81b103341 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -306,82 +306,6 @@ static int ieee80211_ioctl_giwrate(struct net_device *dev, return 0; } -static int ieee80211_ioctl_siwtxpower(struct net_device *dev, - struct iw_request_info *info, - union iwreq_data *data, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_channel* chan = local->hw.conf.channel; - bool reconf = false; - u32 reconf_flags = 0; - int new_power_level; - - if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) - return -EINVAL; - if (data->txpower.flags & IW_TXPOW_RANGE) - return -EINVAL; - if (!chan) - return -EINVAL; - - /* only change when not disabling */ - if (!data->txpower.disabled) { - if (data->txpower.fixed) { - if (data->txpower.value < 0) - return -EINVAL; - new_power_level = data->txpower.value; - /* - * Debatable, but we cannot do a fixed power - * level above the regulatory constraint. - * Use "iwconfig wlan0 txpower 15dBm" instead. - */ - if (new_power_level > chan->max_power) - return -EINVAL; - } else { - /* - * Automatic power level setting, max being the value - * passed in from userland. - */ - if (data->txpower.value < 0) - new_power_level = -1; - else - new_power_level = data->txpower.value; - } - - reconf = true; - - /* - * ieee80211_hw_config() will limit to the channel's - * max power and possibly power constraint from AP. - */ - local->user_power_level = new_power_level; - } - - if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) { - local->hw.conf.radio_enabled = !(data->txpower.disabled); - reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED; - ieee80211_led_radio(local, local->hw.conf.radio_enabled); - } - - if (reconf || reconf_flags) - ieee80211_hw_config(local, reconf_flags); - - return 0; -} - -static int ieee80211_ioctl_giwtxpower(struct net_device *dev, - struct iw_request_info *info, - union iwreq_data *data, char *extra) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - data->txpower.fixed = 1; - data->txpower.disabled = !(local->hw.conf.radio_enabled); - data->txpower.value = local->hw.conf.power_level; - data->txpower.flags = IW_TXPOW_DBM; - - return 0; -} - static int ieee80211_ioctl_siwpower(struct net_device *dev, struct iw_request_info *info, struct iw_param *wrq, @@ -658,8 +582,8 @@ static const iw_handler ieee80211_handler[] = (iw_handler) cfg80211_wext_giwrts, /* SIOCGIWRTS */ (iw_handler) cfg80211_wext_siwfrag, /* SIOCSIWFRAG */ (iw_handler) cfg80211_wext_giwfrag, /* SIOCGIWFRAG */ - (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */ - (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */ + (iw_handler) cfg80211_wext_siwtxpower, /* SIOCSIWTXPOW */ + (iw_handler) cfg80211_wext_giwtxpower, /* SIOCGIWTXPOW */ (iw_handler) cfg80211_wext_siwretry, /* SIOCSIWRETRY */ (iw_handler) cfg80211_wext_giwretry, /* SIOCGIWRETRY */ (iw_handler) cfg80211_wext_siwencode, /* SIOCSIWENCODE */ diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 711e00a0c9b5..9fbfb8536e75 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -744,3 +744,83 @@ int cfg80211_wext_giwencode(struct net_device *dev, return err; } EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode); + +int cfg80211_wext_siwtxpower(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *data, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + enum tx_power_setting type; + int dbm = 0; + + if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) + return -EINVAL; + if (data->txpower.flags & IW_TXPOW_RANGE) + return -EINVAL; + + if (!rdev->ops->set_tx_power) + return -EOPNOTSUPP; + + /* only change when not disabling */ + if (!data->txpower.disabled) { + if (data->txpower.fixed) { + /* + * wext doesn't support negative values, see + * below where it's for automatic + */ + if (data->txpower.value < 0) + return -EINVAL; + dbm = data->txpower.value; + type = TX_POWER_FIXED; + /* TODO: do regulatory check! */ + } else { + /* + * Automatic power level setting, max being the value + * passed in from userland. + */ + if (data->txpower.value < 0) { + type = TX_POWER_AUTOMATIC; + } else { + dbm = data->txpower.value; + type = TX_POWER_LIMITED; + } + } + } else { + type = TX_POWER_OFF; + } + + return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);; +} +EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower); + +int cfg80211_wext_giwtxpower(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *data, char *extra) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + int err, val; + + if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) + return -EINVAL; + if (data->txpower.flags & IW_TXPOW_RANGE) + return -EINVAL; + + if (!rdev->ops->get_tx_power) + return -EOPNOTSUPP; + + err = rdev->ops->get_tx_power(wdev->wiphy, &val); + /* HACK!!! */ + if (err && err != -ENETDOWN) + return err; + + /* well... oh well */ + data->txpower.fixed = 1; + data->txpower.disabled = err == -ENETDOWN; + data->txpower.value = val; + data->txpower.flags = IW_TXPOW_DBM; + + return 0; +} +EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower); -- cgit v1.2.3 From 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 2 Jun 2009 13:01:41 +0200 Subject: cfg80211: add rfkill support To be easier on drivers and users, have cfg80211 register an rfkill structure that drivers can access. When soft-killed, simply take down all interfaces; when hard-killed the driver needs to notify us and we will take down the interfaces after the fact. While rfkilled, interfaces cannot be set UP. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/asm-generic/errno.h | 2 + include/net/cfg80211.h | 29 ++++++++++++-- include/net/mac80211.h | 20 ++++++++-- net/mac80211/cfg.c | 20 ++++------ net/mac80211/driver-ops.h | 7 ++++ net/mac80211/iface.c | 4 +- net/mac80211/util.c | 2 +- net/wireless/Kconfig | 3 +- net/wireless/core.c | 97 +++++++++++++++++++++++++++++++++++++++++++-- net/wireless/core.h | 7 ++++ net/wireless/wext-compat.c | 11 +++-- 11 files changed, 172 insertions(+), 30 deletions(-) (limited to 'net/wireless/wext-compat.c') diff --git a/include/asm-generic/errno.h b/include/asm-generic/errno.h index e8852c092fea..28cc03bf19e6 100644 --- a/include/asm-generic/errno.h +++ b/include/asm-generic/errno.h @@ -106,4 +106,6 @@ #define EOWNERDEAD 130 /* Owner died */ #define ENOTRECOVERABLE 131 /* State not recoverable */ +#define ERFKILL 132 /* Operation not possible due to RF-kill */ + #endif diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 8b8e4b893625..1a21895b732b 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -757,13 +757,11 @@ enum wiphy_params_flags { * @TX_POWER_AUTOMATIC: the dbm parameter is ignored * @TX_POWER_LIMITED: limit TX power by the dbm parameter * @TX_POWER_FIXED: fix TX power to the dbm parameter - * @TX_POWER_OFF: turn off completely (will go away) */ enum tx_power_setting { TX_POWER_AUTOMATIC, TX_POWER_LIMITED, TX_POWER_FIXED, - TX_POWER_OFF, }; /** @@ -855,8 +853,10 @@ enum tx_power_setting { * * @set_tx_power: set the transmit power according to the parameters * @get_tx_power: store the current TX power into the dbm variable; - * return 0 if successful; or -ENETDOWN if successful but power - * is disabled (this will go away) + * return 0 if successful + * + * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting + * functions to adjust rfkill hw state */ struct cfg80211_ops { int (*suspend)(struct wiphy *wiphy); @@ -952,6 +952,8 @@ struct cfg80211_ops { int (*set_tx_power)(struct wiphy *wiphy, enum tx_power_setting type, int dbm); int (*get_tx_power)(struct wiphy *wiphy, int *dbm); + + void (*rfkill_poll)(struct wiphy *wiphy); }; /* @@ -1666,4 +1668,23 @@ void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, */ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); +/** + * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state + * @wiphy: the wiphy + * @blocked: block status + */ +void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); + +/** + * wiphy_rfkill_start_polling - start polling rfkill + * @wiphy: the wiphy + */ +void wiphy_rfkill_start_polling(struct wiphy *wiphy); + +/** + * wiphy_rfkill_stop_polling - stop polling rfkill + * @wiphy: the wiphy + */ +void wiphy_rfkill_stop_polling(struct wiphy *wiphy); + #endif /* __NET_CFG80211_H */ diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 0270aa6e08f2..17d61d19d912 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -526,7 +526,7 @@ enum ieee80211_conf_flags { /** * enum ieee80211_conf_changed - denotes which configuration changed * - * @IEEE80211_CONF_CHANGE_RADIO_ENABLED: the value of radio_enabled changed + * @_IEEE80211_CONF_CHANGE_RADIO_ENABLED: DEPRECATED * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed * @IEEE80211_CONF_CHANGE_RADIOTAP: the radiotap flag changed * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed @@ -536,7 +536,7 @@ enum ieee80211_conf_flags { * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed */ enum ieee80211_conf_changed { - IEEE80211_CONF_CHANGE_RADIO_ENABLED = BIT(0), + _IEEE80211_CONF_CHANGE_RADIO_ENABLED = BIT(0), IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), IEEE80211_CONF_CHANGE_RADIOTAP = BIT(3), IEEE80211_CONF_CHANGE_PS = BIT(4), @@ -546,6 +546,14 @@ enum ieee80211_conf_changed { IEEE80211_CONF_CHANGE_IDLE = BIT(8), }; +static inline __deprecated enum ieee80211_conf_changed +__IEEE80211_CONF_CHANGE_RADIO_ENABLED(void) +{ + return _IEEE80211_CONF_CHANGE_RADIO_ENABLED; +} +#define IEEE80211_CONF_CHANGE_RADIO_ENABLED \ + __IEEE80211_CONF_CHANGE_RADIO_ENABLED() + /** * struct ieee80211_conf - configuration of the device * @@ -585,7 +593,7 @@ struct ieee80211_conf { int max_sleep_period; u16 listen_interval; - bool radio_enabled; + bool __deprecated radio_enabled; u8 long_frame_max_tx_count, short_frame_max_tx_count; @@ -1396,6 +1404,10 @@ enum ieee80211_ampdu_mlme_action { * is the first frame we expect to perform the action on. Notice * that TX/RX_STOP can pass NULL for this parameter. * Returns a negative error code on failure. + * + * @rfkill_poll: Poll rfkill hardware state. If you need this, you also + * need to set wiphy->rfkill_poll to %true before registration, + * and need to call wiphy_rfkill_set_hw_state() in the callback. */ struct ieee80211_ops { int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); @@ -1444,6 +1456,8 @@ struct ieee80211_ops { int (*ampdu_action)(struct ieee80211_hw *hw, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn); + + void (*rfkill_poll)(struct ieee80211_hw *hw); }; /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 81258acf48bc..a9211cc183cb 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1340,7 +1340,6 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy, struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_channel *chan = local->hw.conf.channel; u32 changes = 0; - bool radio_enabled = true; switch (type) { case TX_POWER_AUTOMATIC: @@ -1359,14 +1358,6 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy, return -EINVAL; local->user_power_level = dbm; break; - case TX_POWER_OFF: - radio_enabled = false; - break; - } - - if (radio_enabled != local->hw.conf.radio_enabled) { - changes |= IEEE80211_CONF_CHANGE_RADIO_ENABLED; - local->hw.conf.radio_enabled = radio_enabled; } ieee80211_hw_config(local, changes); @@ -1380,12 +1371,16 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) *dbm = local->hw.conf.power_level; - if (!local->hw.conf.radio_enabled) - return -ENETDOWN; - return 0; } +static void ieee80211_rfkill_poll(struct wiphy *wiphy) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + drv_rfkill_poll(local); +} + struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, @@ -1427,4 +1422,5 @@ struct cfg80211_ops mac80211_config_ops = { .set_wiphy_params = ieee80211_set_wiphy_params, .set_tx_power = ieee80211_set_tx_power, .get_tx_power = ieee80211_get_tx_power, + .rfkill_poll = ieee80211_rfkill_poll, }; diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index 3912b5334b9c..b13446afd48f 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -181,4 +181,11 @@ static inline int drv_ampdu_action(struct ieee80211_local *local, sta, tid, ssn); return -EOPNOTSUPP; } + + +static inline void drv_rfkill_poll(struct ieee80211_local *local) +{ + if (local->ops->rfkill_poll) + local->ops->rfkill_poll(&local->hw); +} #endif /* __MAC80211_DRIVER_OPS */ diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 8c9f1c722cdb..b7c8a4484298 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -170,7 +170,7 @@ static int ieee80211_open(struct net_device *dev) goto err_del_bss; /* we're brought up, everything changes */ hw_reconf_flags = ~0; - ieee80211_led_radio(local, local->hw.conf.radio_enabled); + ieee80211_led_radio(local, true); } /* @@ -560,7 +560,7 @@ static int ieee80211_stop(struct net_device *dev) drv_stop(local); - ieee80211_led_radio(local, 0); + ieee80211_led_radio(local, false); flush_workqueue(local->hw.workqueue); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 31284c984e38..22f63815fb36 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -973,7 +973,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) if (local->open_count) { res = drv_start(local); - ieee80211_led_radio(local, hw->conf.radio_enabled); + ieee80211_led_radio(local, true); } /* add interfaces */ diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig index 45005497c634..4428dd5e911d 100644 --- a/net/wireless/Kconfig +++ b/net/wireless/Kconfig @@ -1,5 +1,6 @@ config CFG80211 - tristate "Improved wireless configuration API" + tristate "Improved wireless configuration API" + depends on RFKILL || !RFKILL config CFG80211_REG_DEBUG bool "cfg80211 regulatory debugging" diff --git a/net/wireless/core.c b/net/wireless/core.c index a5dbea1da476..3b74b88e10a3 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include "nl80211.h" @@ -227,6 +228,41 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, return 0; } +static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) +{ + struct cfg80211_registered_device *drv = data; + + drv->ops->rfkill_poll(&drv->wiphy); +} + +static int cfg80211_rfkill_set_block(void *data, bool blocked) +{ + struct cfg80211_registered_device *drv = data; + struct wireless_dev *wdev; + + if (!blocked) + return 0; + + rtnl_lock(); + mutex_lock(&drv->devlist_mtx); + + list_for_each_entry(wdev, &drv->netdev_list, list) + dev_close(wdev->netdev); + + mutex_unlock(&drv->devlist_mtx); + rtnl_unlock(); + + return 0; +} + +static void cfg80211_rfkill_sync_work(struct work_struct *work) +{ + struct cfg80211_registered_device *drv; + + drv = container_of(work, struct cfg80211_registered_device, rfkill_sync); + cfg80211_rfkill_set_block(drv, rfkill_blocked(drv->rfkill)); +} + /* exported functions */ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) @@ -274,6 +310,18 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) drv->wiphy.dev.class = &ieee80211_class; drv->wiphy.dev.platform_data = drv; + drv->rfkill_ops.set_block = cfg80211_rfkill_set_block; + drv->rfkill = rfkill_alloc(dev_name(&drv->wiphy.dev), + &drv->wiphy.dev, RFKILL_TYPE_WLAN, + &drv->rfkill_ops, drv); + + if (!drv->rfkill) { + kfree(drv); + return NULL; + } + + INIT_WORK(&drv->rfkill_sync, cfg80211_rfkill_sync_work); + /* * Initialize wiphy parameters to IEEE 802.11 MIB default values. * Fragmentation and RTS threshold are disabled by default with the @@ -356,6 +404,10 @@ int wiphy_register(struct wiphy *wiphy) if (res) goto out_unlock; + res = rfkill_register(drv->rfkill); + if (res) + goto out_rm_dev; + list_add(&drv->list, &cfg80211_drv_list); /* add to debugfs */ @@ -379,16 +431,41 @@ int wiphy_register(struct wiphy *wiphy) cfg80211_debugfs_drv_add(drv); res = 0; -out_unlock: + goto out_unlock; + + out_rm_dev: + device_del(&drv->wiphy.dev); + out_unlock: mutex_unlock(&cfg80211_mutex); return res; } EXPORT_SYMBOL(wiphy_register); +void wiphy_rfkill_start_polling(struct wiphy *wiphy) +{ + struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy); + + if (!drv->ops->rfkill_poll) + return; + drv->rfkill_ops.poll = cfg80211_rfkill_poll; + rfkill_resume_polling(drv->rfkill); +} +EXPORT_SYMBOL(wiphy_rfkill_start_polling); + +void wiphy_rfkill_stop_polling(struct wiphy *wiphy) +{ + struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy); + + rfkill_pause_polling(drv->rfkill); +} +EXPORT_SYMBOL(wiphy_rfkill_stop_polling); + void wiphy_unregister(struct wiphy *wiphy) { struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy); + rfkill_unregister(drv->rfkill); + /* protect the device list */ mutex_lock(&cfg80211_mutex); @@ -425,6 +502,7 @@ EXPORT_SYMBOL(wiphy_unregister); void cfg80211_dev_free(struct cfg80211_registered_device *drv) { struct cfg80211_internal_bss *scan, *tmp; + rfkill_destroy(drv->rfkill); mutex_destroy(&drv->mtx); mutex_destroy(&drv->devlist_mtx); list_for_each_entry_safe(scan, tmp, &drv->bss_list, list) @@ -438,6 +516,15 @@ void wiphy_free(struct wiphy *wiphy) } EXPORT_SYMBOL(wiphy_free); +void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) +{ + struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy); + + if (rfkill_set_hw_state(drv->rfkill, blocked)) + schedule_work(&drv->rfkill_sync); +} +EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); + static int cfg80211_netdev_notifier_call(struct notifier_block * nb, unsigned long state, void *ndev) @@ -446,7 +533,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, struct cfg80211_registered_device *rdev; if (!dev->ieee80211_ptr) - return 0; + return NOTIFY_DONE; rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); @@ -492,9 +579,13 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, } mutex_unlock(&rdev->devlist_mtx); break; + case NETDEV_PRE_UP: + if (rfkill_blocked(rdev->rfkill)) + return notifier_from_errno(-ERFKILL); + break; } - return 0; + return NOTIFY_DONE; } static struct notifier_block cfg80211_netdev_notifier = { diff --git a/net/wireless/core.h b/net/wireless/core.h index ab512bcd8153..bfa340c7abb5 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -11,6 +11,8 @@ #include #include #include +#include +#include #include #include #include "reg.h" @@ -24,6 +26,11 @@ struct cfg80211_registered_device { * any call is in progress */ struct mutex mtx; + /* rfkill support */ + struct rfkill_ops rfkill_ops; + struct rfkill *rfkill; + struct work_struct rfkill_sync; + /* ISO / IEC 3166 alpha2 for which this device is receiving * country IEs on, this can help disregard country IEs from APs * on the same alpha2 quickly. The alpha2 may differ from diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 9fbfb8536e75..d030c5315672 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -764,6 +764,8 @@ int cfg80211_wext_siwtxpower(struct net_device *dev, /* only change when not disabling */ if (!data->txpower.disabled) { + rfkill_set_sw_state(rdev->rfkill, false); + if (data->txpower.fixed) { /* * wext doesn't support negative values, see @@ -787,7 +789,9 @@ int cfg80211_wext_siwtxpower(struct net_device *dev, } } } else { - type = TX_POWER_OFF; + rfkill_set_sw_state(rdev->rfkill, true); + schedule_work(&rdev->rfkill_sync); + return 0; } return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);; @@ -811,13 +815,12 @@ int cfg80211_wext_giwtxpower(struct net_device *dev, return -EOPNOTSUPP; err = rdev->ops->get_tx_power(wdev->wiphy, &val); - /* HACK!!! */ - if (err && err != -ENETDOWN) + if (err) return err; /* well... oh well */ data->txpower.fixed = 1; - data->txpower.disabled = err == -ENETDOWN; + data->txpower.disabled = rfkill_blocked(rdev->rfkill); data->txpower.value = val; data->txpower.flags = IW_TXPOW_DBM; -- cgit v1.2.3