diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/cfg.c | 4 | ||||
| -rw-r--r-- | net/mac80211/ibss.c | 61 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 2 |
3 files changed, 17 insertions, 50 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index df32df383f52..35bb71be72bb 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3038,8 +3038,8 @@ unlock: sdata_unlock(sdata); } -static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, - struct cfg80211_csa_settings *params) +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; diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index a6ca56dfe0d7..5ad318329215 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -788,18 +788,10 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct cfg80211_csa_settings params; struct ieee80211_csa_ie csa_ie; struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; - struct ieee80211_chanctx_conf *chanctx_conf; - struct ieee80211_chanctx *chanctx; enum nl80211_channel_type ch_type; - int err, num_chanctx; + int err; u32 sta_flags; - if (sdata->vif.csa_active) - return true; - - if (!sdata->vif.bss_conf.ibss_joined) - return false; - sta_flags = IEEE80211_STA_DISABLE_VHT; switch (ifibss->chandef.width) { case NL80211_CHAN_WIDTH_5: @@ -834,9 +826,6 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, params.count = csa_ie.count; params.chandef = csa_ie.chandef; - if (ifibss->chandef.chan->band != params.chandef.chan->band) - goto disconnect; - switch (ifibss->chandef.width) { case NL80211_CHAN_WIDTH_20_NOHT: case NL80211_CHAN_WIDTH_20: @@ -892,28 +881,12 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, params.radar_required = true; } - rcu_read_lock(); - chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); - if (!chanctx_conf) { - rcu_read_unlock(); - goto disconnect; - } - - /* don't handle for multi-VIF cases */ - chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); - if (chanctx->refcount > 1) { - rcu_read_unlock(); - goto disconnect; - } - num_chanctx = 0; - list_for_each_entry_rcu(chanctx, &sdata->local->chanctx_list, list) - num_chanctx++; - - if (num_chanctx > 1) { - rcu_read_unlock(); - goto disconnect; + if (cfg80211_chandef_identical(¶ms.chandef, + &sdata->vif.bss_conf.chandef)) { + ibss_dbg(sdata, + "received csa with an identical chandef, ignoring\n"); + return true; } - rcu_read_unlock(); /* all checks done, now perform the channel switch. */ ibss_dbg(sdata, @@ -922,19 +895,9 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata, params.block_tx = !!csa_ie.mode; - ieee80211_ibss_csa_beacon(sdata, ¶ms); - sdata->csa_radar_required = params.radar_required; - - if (params.block_tx) - ieee80211_stop_queues_by_reason(&sdata->local->hw, - IEEE80211_MAX_QUEUE_MAP, - IEEE80211_QUEUE_STOP_REASON_CSA); - - sdata->csa_chandef = params.chandef; - sdata->vif.csa_active = true; - - ieee80211_bss_info_change_notify(sdata, err); - drv_channel_switch_beacon(sdata, ¶ms.chandef); + if (ieee80211_channel_switch(sdata->local->hw.wiphy, sdata->dev, + ¶ms)) + goto disconnect; ieee80211_ibss_csa_mark_radar(sdata); @@ -970,7 +933,8 @@ ieee80211_rx_mgmt_spectrum_mgmt(struct ieee80211_sub_if_data *sdata, if (len < required_len) return; - ieee80211_ibss_process_chanswitch(sdata, elems, false); + if (!sdata->vif.csa_active) + ieee80211_ibss_process_chanswitch(sdata, elems, false); } static void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata, @@ -1151,7 +1115,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, goto put_bss; /* process channel switch */ - if (ieee80211_ibss_process_chanswitch(sdata, elems, true)) + if (sdata->vif.csa_active || + ieee80211_ibss_process_chanswitch(sdata, elems, true)) goto put_bss; /* same BSSID */ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index adbff719638c..fb5dbcb79a12 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1450,6 +1450,8 @@ void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); /* channel switch handling */ void ieee80211_csa_finalize_work(struct work_struct *work); +int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_csa_settings *params); /* interface handling */ int ieee80211_iface_init(void); |