cfg80211/mac80211: DFS setup chandef for cac event

To report channel width correctly we have
to send correct channel parameters from
mac80211 when calling cfg80211_cac_event().

This is required in case of using channel width
higher than 20MHz and we have to set correct
dfs channel state after CAC (NL80211_DFS_AVAILABLE).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b7a825e..968f2ad 100644 (file)
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4150,6 +4150,7 @@ void cfg80211_radar_event(struct wiphy *wiphy,
 /**
  * cfg80211_cac_event - Channel availability check (CAC) event
  * @netdev: network device
+ * @chandef: chandef for the current channel
  * @event: type of event
  * @gfp: context flags
  *
@@ -4158,6 +4159,7 @@ void cfg80211_radar_event(struct wiphy *wiphy,
  * also by full-MAC drivers.
  */
 void cfg80211_cac_event(struct net_device *netdev,
+                       const struct cfg80211_chan_def *chandef,
                        enum nl80211_radar_event event, gfp_t gfp);
 
 

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 95667b0..5232b01 100644 (file)
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1050,6 +1050,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
        struct ieee80211_local *local = sdata->local;
        struct beacon_data *old_beacon;
        struct probe_resp *old_probe_resp;
+       struct cfg80211_chan_def chandef;
 
        old_beacon = rtnl_dereference(sdata->u.ap.beacon);
        if (!old_beacon)
@@ -1091,8 +1092,10 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
        ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 
        if (sdata->wdev.cac_started) {
+               chandef = sdata->vif.bss_conf.chandef;
                cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
-               cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
+               cfg80211_cac_event(sdata->dev, &chandef,
+                                  NL80211_RADAR_CAC_ABORTED,
                                   GFP_KERNEL);
        }
 

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index ff101ea..c9b0442 100644 (file)
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -749,6 +749,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
        u32 hw_reconf_flags = 0;
        int i, flushed;
        struct ps_data *ps;
+       struct cfg80211_chan_def chandef;
 
        clear_bit(SDATA_STATE_RUNNING, &sdata->state);
 
@@ -823,11 +824,13 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
        cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 
        if (sdata->wdev.cac_started) {
+               chandef = sdata->vif.bss_conf.chandef;
                WARN_ON(local->suspended);
                mutex_lock(&local->iflist_mtx);
                ieee80211_vif_release_channel(sdata);
                mutex_unlock(&local->iflist_mtx);
-               cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
+               cfg80211_cac_event(sdata->dev, &chandef,
+                                  NL80211_RADAR_CAC_ABORTED,
                                   GFP_KERNEL);
        }
 

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index eb66031..d39d27f 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1398,10 +1398,12 @@ void ieee80211_dfs_cac_timer_work(struct work_struct *work)
        struct ieee80211_sub_if_data *sdata =
                container_of(delayed_work, struct ieee80211_sub_if_data,
                             dfs_cac_timer_work);
+       struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
 
        ieee80211_vif_release_channel(sdata);
-
-       cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
+       cfg80211_cac_event(sdata->dev, &chandef,
+                          NL80211_RADAR_CAC_FINISHED,
+                          GFP_KERNEL);
 }
 
 /* MLME */

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 592a181..fd4fe5d 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2259,14 +2259,17 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
 {
        struct ieee80211_sub_if_data *sdata;
+       struct cfg80211_chan_def chandef;
 
        mutex_lock(&local->iflist_mtx);
        list_for_each_entry(sdata, &local->interfaces, list) {
                cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 
                if (sdata->wdev.cac_started) {
+                       chandef = sdata->vif.bss_conf.chandef;
                        ieee80211_vif_release_channel(sdata);
                        cfg80211_cac_event(sdata->dev,
+                                          &chandef,
                                           NL80211_RADAR_CAC_ABORTED,
                                           GFP_KERNEL);
                }

diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 6a6b1c8..31f541f 100644 (file)
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -763,12 +763,12 @@ void cfg80211_radar_event(struct wiphy *wiphy,
 EXPORT_SYMBOL(cfg80211_radar_event);
 
 void cfg80211_cac_event(struct net_device *netdev,
+                       const struct cfg80211_chan_def *chandef,
                        enum nl80211_radar_event event, gfp_t gfp)
 {
        struct wireless_dev *wdev = netdev->ieee80211_ptr;
        struct wiphy *wiphy = wdev->wiphy;
        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
-       struct cfg80211_chan_def chandef;
        unsigned long timeout;
 
        trace_cfg80211_cac_event(netdev, event);
@@ -779,14 +779,12 @@ void cfg80211_cac_event(struct net_device *netdev,
        if (WARN_ON(!wdev->channel))
                return;
 
-       cfg80211_chandef_create(&chandef, wdev->channel, NL80211_CHAN_NO_HT);
-
        switch (event) {
        case NL80211_RADAR_CAC_FINISHED:
                timeout = wdev->cac_start_time +
                          msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
                WARN_ON(!time_after_eq(jiffies, timeout));
-               cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE);
+               cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
                break;
        case NL80211_RADAR_CAC_ABORTED:
                break;
@@ -796,6 +794,6 @@ void cfg80211_cac_event(struct net_device *netdev,
        }
        wdev->cac_started = false;
 
-       nl80211_radar_notify(rdev, &chandef, event, netdev, gfp);
+       nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
 }
 EXPORT_SYMBOL(cfg80211_cac_event);

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 1ad11de..04fa8bb 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2168,7 +2168,7 @@ static inline u64 wdev_id(struct wireless_dev *wdev)
 }
 
 static int nl80211_send_chandef(struct sk_buff *msg,
-                                struct cfg80211_chan_def *chandef)
+                               const struct cfg80211_chan_def *chandef)
 {
        WARN_ON(!cfg80211_chandef_valid(chandef));
 
@@ -10874,7 +10874,7 @@ EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
 
 void
 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
-                    struct cfg80211_chan_def *chandef,
+                    const struct cfg80211_chan_def *chandef,
                     enum nl80211_radar_event event,
                     struct net_device *netdev, gfp_t gfp)
 {

diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 2c0f2b3..b1b2313 100644 (file)
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -70,7 +70,7 @@ int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
 
 void
 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
-                    struct cfg80211_chan_def *chandef,
+                    const struct cfg80211_chan_def *chandef,
                     enum nl80211_radar_event event,
                     struct net_device *netdev, gfp_t gfp);