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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-06 01:54:29 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-06 01:54:29 +0400
commitcc998ff8811530be521f6b316f37ab7676a07938 (patch)
treea054b3bf4b2ef406bf756a6cfc9be2f9115f17ae /net/mac80211/cfg.c
parent57d730924d5cc2c3e280af16a9306587c3a511db (diff)
parent0d40f75bdab241868c0eb6f97aef9f8b3a66f7b3 (diff)
downloadlinux-cc998ff8811530be521f6b316f37ab7676a07938.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking changes from David Miller: "Noteworthy changes this time around: 1) Multicast rejoin support for team driver, from Jiri Pirko. 2) Centralize and simplify TCP RTT measurement handling in order to reduce the impact of bad RTO seeding from SYN/ACKs. Also, when both timestamps and local RTT measurements are available prefer the later because there are broken middleware devices which scramble the timestamp. From Yuchung Cheng. 3) Add TCP_NOTSENT_LOWAT socket option to limit the amount of kernel memory consumed to queue up unsend user data. From Eric Dumazet. 4) Add a "physical port ID" abstraction for network devices, from Jiri Pirko. 5) Add a "suppress" operation to influence fib_rules lookups, from Stefan Tomanek. 6) Add a networking development FAQ, from Paul Gortmaker. 7) Extend the information provided by tcp_probe and add ipv6 support, from Daniel Borkmann. 8) Use RCU locking more extensively in openvswitch data paths, from Pravin B Shelar. 9) Add SCTP support to openvswitch, from Joe Stringer. 10) Add EF10 chip support to SFC driver, from Ben Hutchings. 11) Add new SYNPROXY netfilter target, from Patrick McHardy. 12) Compute a rate approximation for sending in TCP sockets, and use this to more intelligently coalesce TSO frames. Furthermore, add a new packet scheduler which takes advantage of this estimate when available. From Eric Dumazet. 13) Allow AF_PACKET fanouts with random selection, from Daniel Borkmann. 14) Add ipv6 support to vxlan driver, from Cong Wang" Resolved conflicts as per discussion. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1218 commits) openvswitch: Fix alignment of struct sw_flow_key. netfilter: Fix build errors with xt_socket.c tcp: Add missing braces to do_tcp_setsockopt caif: Add missing braces to multiline if in cfctrl_linkup_request bnx2x: Add missing braces in bnx2x:bnx2x_link_initialize vxlan: Fix kernel panic on device delete. net: mvneta: implement ->ndo_do_ioctl() to support PHY ioctls net: mvneta: properly disable HW PHY polling and ensure adjust_link() works icplus: Use netif_running to determine device state ethernet/arc/arc_emac: Fix huge delays in large file copies tuntap: orphan frags before trying to set tx timestamp tuntap: purge socket error queue on detach qlcnic: use standard NAPI weights ipv6:introduce function to find route for redirect bnx2x: VF RSS support - VF side bnx2x: VF RSS support - PF side vxlan: Notify drivers for listening UDP port changes net: usbnet: update addr_assign_type if appropriate driver/net: enic: update enic maintainers and driver driver/net: enic: Exposing symbols for Cisco's low latency driver ...
Diffstat (limited to 'net/mac80211/cfg.c')
-rw-r--r--net/mac80211/cfg.c247
1 files changed, 216 insertions, 31 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 43dd7525bfcb..2e7855a1b10d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -395,9 +395,13 @@ void sta_set_rate_info_tx(struct sta_info *sta,
rinfo->nss = ieee80211_rate_get_vht_nss(rate);
} else {
struct ieee80211_supported_band *sband;
+ int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
+ u16 brate;
+
sband = sta->local->hw.wiphy->bands[
ieee80211_get_sdata_band(sta->sdata)];
- rinfo->legacy = sband->bitrates[rate->idx].bitrate;
+ brate = sband->bitrates[rate->idx].bitrate;
+ rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
}
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
@@ -422,11 +426,13 @@ void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
rinfo->mcs = sta->last_rx_rate_idx;
} else {
struct ieee80211_supported_band *sband;
+ int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
+ u16 brate;
sband = sta->local->hw.wiphy->bands[
ieee80211_get_sdata_band(sta->sdata)];
- rinfo->legacy =
- sband->bitrates[sta->last_rx_rate_idx].bitrate;
+ brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
+ rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
}
if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
@@ -856,8 +862,8 @@ static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
return 0;
}
-static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
- struct cfg80211_beacon_data *params)
+int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_beacon_data *params)
{
struct beacon_data *new, *old;
int new_head_len, new_tail_len;
@@ -1020,6 +1026,12 @@ static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ /* don't allow changing the beacon while CSA is in place - offset
+ * of channel switch counter may change
+ */
+ if (sdata->vif.csa_active)
+ return -EBUSY;
+
old = rtnl_dereference(sdata->u.ap.beacon);
if (!old)
return -ENOENT;
@@ -1044,6 +1056,10 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
return -ENOENT;
old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
+ /* abort any running channel switch */
+ sdata->vif.csa_active = false;
+ cancel_work_sync(&sdata->csa_finalize_work);
+
/* turn off carrier for this interface and dependent VLANs */
list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
netif_carrier_off(vlan->dev);
@@ -1192,8 +1208,6 @@ static int sta_apply_parameters(struct ieee80211_local *local,
struct station_parameters *params)
{
int ret = 0;
- u32 rates;
- int i, j;
struct ieee80211_supported_band *sband;
struct ieee80211_sub_if_data *sdata = sta->sdata;
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
@@ -1286,16 +1300,10 @@ static int sta_apply_parameters(struct ieee80211_local *local,
sta->listen_interval = params->listen_interval;
if (params->supported_rates) {
- rates = 0;
-
- for (i = 0; i < params->supported_rates_len; i++) {
- int rate = (params->supported_rates[i] & 0x7f) * 5;
- for (j = 0; j < sband->n_bitrates; j++) {
- if (sband->bitrates[j].bitrate == rate)
- rates |= BIT(j);
- }
- }
- sta->sta.supp_rates[band] = rates;
+ ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
+ sband, params->supported_rates,
+ params->supported_rates_len,
+ &sta->sta.supp_rates[band]);
}
if (params->ht_capa)
@@ -1958,18 +1966,11 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
}
if (params->basic_rates) {
- int i, j;
- u32 rates = 0;
- struct ieee80211_supported_band *sband = wiphy->bands[band];
-
- for (i = 0; i < params->basic_rates_len; i++) {
- int rate = (params->basic_rates[i] & 0x7f) * 5;
- for (j = 0; j < sband->n_bitrates; j++) {
- if (sband->bitrates[j].bitrate == rate)
- rates |= BIT(j);
- }
- }
- sdata->vif.bss_conf.basic_rates = rates;
+ ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
+ wiphy->bands[band],
+ params->basic_rates,
+ params->basic_rates_len,
+ &sdata->vif.bss_conf.basic_rates);
changed |= BSS_CHANGED_BASIC_RATES;
}
@@ -2301,14 +2302,25 @@ static void ieee80211_rfkill_poll(struct wiphy *wiphy)
}
#ifdef CONFIG_NL80211_TESTMODE
-static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
+static int ieee80211_testmode_cmd(struct wiphy *wiphy,
+ struct wireless_dev *wdev,
+ void *data, int len)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
+ struct ieee80211_vif *vif = NULL;
if (!local->ops->testmode_cmd)
return -EOPNOTSUPP;
- return local->ops->testmode_cmd(&local->hw, data, len);
+ if (wdev) {
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
+ if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
+ vif = &sdata->vif;
+ }
+
+ return local->ops->testmode_cmd(&local->hw, vif, data, len);
}
static int ieee80211_testmode_dump(struct wiphy *wiphy,
@@ -2786,6 +2798,178 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy,
return 0;
}
+static struct cfg80211_beacon_data *
+cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
+{
+ struct cfg80211_beacon_data *new_beacon;
+ u8 *pos;
+ int len;
+
+ len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
+ beacon->proberesp_ies_len + beacon->assocresp_ies_len +
+ beacon->probe_resp_len;
+
+ new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
+ if (!new_beacon)
+ return NULL;
+
+ pos = (u8 *)(new_beacon + 1);
+ if (beacon->head_len) {
+ new_beacon->head_len = beacon->head_len;
+ new_beacon->head = pos;
+ memcpy(pos, beacon->head, beacon->head_len);
+ pos += beacon->head_len;
+ }
+ if (beacon->tail_len) {
+ new_beacon->tail_len = beacon->tail_len;
+ new_beacon->tail = pos;
+ memcpy(pos, beacon->tail, beacon->tail_len);
+ pos += beacon->tail_len;
+ }
+ if (beacon->beacon_ies_len) {
+ new_beacon->beacon_ies_len = beacon->beacon_ies_len;
+ new_beacon->beacon_ies = pos;
+ memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
+ pos += beacon->beacon_ies_len;
+ }
+ if (beacon->proberesp_ies_len) {
+ new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
+ new_beacon->proberesp_ies = pos;
+ memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
+ pos += beacon->proberesp_ies_len;
+ }
+ if (beacon->assocresp_ies_len) {
+ new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
+ new_beacon->assocresp_ies = pos;
+ memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
+ pos += beacon->assocresp_ies_len;
+ }
+ if (beacon->probe_resp_len) {
+ new_beacon->probe_resp_len = beacon->probe_resp_len;
+ beacon->probe_resp = pos;
+ memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
+ pos += beacon->probe_resp_len;
+ }
+
+ return new_beacon;
+}
+
+void ieee80211_csa_finalize_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ csa_finalize_work);
+ struct ieee80211_local *local = sdata->local;
+ int err, changed;
+
+ if (!ieee80211_sdata_running(sdata))
+ return;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_AP))
+ return;
+
+ sdata->radar_required = sdata->csa_radar_required;
+ err = ieee80211_vif_change_channel(sdata, &local->csa_chandef,
+ &changed);
+ if (WARN_ON(err < 0))
+ return;
+
+ err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
+ if (err < 0)
+ return;
+
+ changed |= err;
+ kfree(sdata->u.ap.next_beacon);
+ sdata->u.ap.next_beacon = NULL;
+ sdata->vif.csa_active = false;
+
+ ieee80211_wake_queues_by_reason(&sdata->local->hw,
+ IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+
+ ieee80211_bss_info_change_notify(sdata, changed);
+
+ cfg80211_ch_switch_notify(sdata->dev, &local->csa_chandef);
+}
+
+static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+ struct cfg80211_csa_settings *params)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_chanctx *chanctx;
+ int err, num_chanctx;
+
+ if (!list_empty(&local->roc_list) || local->scanning)
+ return -EBUSY;
+
+ if (sdata->wdev.cac_started)
+ return -EBUSY;
+
+ if (cfg80211_chandef_identical(&params->chandef,
+ &sdata->vif.bss_conf.chandef))
+ return -EINVAL;
+
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf) {
+ rcu_read_unlock();
+ return -EBUSY;
+ }
+
+ /* don't handle for multi-VIF cases */
+ chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
+ if (chanctx->refcount > 1) {
+ rcu_read_unlock();
+ return -EBUSY;
+ }
+ num_chanctx = 0;
+ list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
+ num_chanctx++;
+ rcu_read_unlock();
+
+ if (num_chanctx > 1)
+ return -EBUSY;
+
+ /* don't allow another channel switch if one is already active. */
+ if (sdata->vif.csa_active)
+ return -EBUSY;
+
+ /* only handle AP for now. */
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_AP:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ sdata->u.ap.next_beacon = cfg80211_beacon_dup(&params->beacon_after);
+ if (!sdata->u.ap.next_beacon)
+ return -ENOMEM;
+
+ sdata->csa_counter_offset_beacon = params->counter_offset_beacon;
+ sdata->csa_counter_offset_presp = params->counter_offset_presp;
+ sdata->csa_radar_required = params->radar_required;
+
+ if (params->block_tx)
+ ieee80211_stop_queues_by_reason(&local->hw,
+ IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+
+ err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
+ if (err < 0)
+ return err;
+
+ local->csa_chandef = params->chandef;
+ sdata->vif.csa_active = true;
+
+ ieee80211_bss_info_change_notify(sdata, err);
+ drv_channel_switch_beacon(sdata, &params->chandef);
+
+ return 0;
+}
+
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
struct ieee80211_channel *chan, bool offchan,
unsigned int wait, const u8 *buf, size_t len,
@@ -3503,4 +3687,5 @@ struct cfg80211_ops mac80211_config_ops = {
.get_et_strings = ieee80211_get_et_strings,
.get_channel = ieee80211_cfg_get_channel,
.start_radar_detection = ieee80211_start_radar_detection,
+ .channel_switch = ieee80211_channel_switch,
};