diff options
| author | Michal Kazior <michal.kazior@tieto.com> | 2014-01-29 06:56:21 (GMT) |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-02-04 20:58:11 (GMT) |
| commit | dbd72850dcc9738b42a9762ef8c4a1a66b30d897 (patch) | |
| tree | 11a1f250e7af7bdeaa8f154762522b8a7db0deb8 /net | |
| parent | cc901de1bcb0372583466075bfa62e3049dc6288 (diff) | |
| download | linux-dbd72850dcc9738b42a9762ef8c4a1a66b30d897.tar.xz | |
mac80211: add missing CSA locking
The patch adds a missing sdata lock and adds a few
lockdeps for easier maintenance.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/cfg.c | 7 | ||||
| -rw-r--r-- | net/mac80211/ibss.c | 2 | ||||
| -rw-r--r-- | net/mac80211/iface.c | 2 | ||||
| -rw-r--r-- | net/mac80211/mesh.c | 2 |
4 files changed, 12 insertions, 1 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 27fa53b..875e63d 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1053,6 +1053,7 @@ static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); + sdata_assert_lock(sdata); /* don't allow changing the beacon while CSA is in place - offset * of channel switch counter may change @@ -1080,6 +1081,8 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) struct probe_resp *old_probe_resp; struct cfg80211_chan_def chandef; + sdata_assert_lock(sdata); + old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); if (!old_beacon) return -ENOENT; @@ -3002,6 +3005,8 @@ static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) struct ieee80211_local *local = sdata->local; int err, changed = 0; + sdata_assert_lock(sdata); + mutex_lock(&local->mtx); sdata->radar_required = sdata->csa_radar_required; err = ieee80211_vif_change_channel(sdata, &changed); @@ -3083,7 +3088,7 @@ int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_if_mesh __maybe_unused *ifmsh; int err, num_chanctx, changed = 0; - lockdep_assert_held(&sdata->wdev.mtx); + sdata_assert_lock(sdata); if (!list_empty(&local->roc_list) || local->scanning) return -EBUSY; diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index f01d468..b2da79f 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -795,6 +795,8 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, int err; u32 sta_flags; + sdata_assert_lock(sdata); + sta_flags = IEEE80211_STA_DISABLE_VHT; switch (ifibss->chandef.width) { case NL80211_CHAN_WIDTH_5: diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 3dfd20a..8880bc8 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -822,7 +822,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, cancel_work_sync(&local->dynamic_ps_enable_work); cancel_work_sync(&sdata->recalc_smps); + sdata_lock(sdata); sdata->vif.csa_active = false; + sdata_unlock(sdata); cancel_work_sync(&sdata->csa_finalize_work); cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index bd55115..f70e9cd 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -864,6 +864,8 @@ ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata, int err; u32 sta_flags; + sdata_assert_lock(sdata); + sta_flags = IEEE80211_STA_DISABLE_VHT; switch (sdata->vif.bss_conf.chandef.width) { case NL80211_CHAN_WIDTH_20_NOHT: |