mac80211: introduce TDLS channel switch ops
Implement the cfg80211 TDLS channel switch ops and introduce new mac80211
ones for low-level drivers.
Verify low-level driver support for the new ops when using the relevant
wiphy feature bit. Also verify the peer supports channel switching before
passing the command down.
Add a new STA flag to track the off-channel state with the TDLS peer and
make sure to cancel the channel-switch if the peer STA is unexpectedly
removed.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 9737251..86ca627 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -847,6 +847,15 @@
if (WARN_ON(ret))
return ret;
+ /*
+ * for TDLS peers, make sure to return to the base channel before
+ * removal.
+ */
+ if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
+ drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
+ clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
+ }
+
list_del_rcu(&sta->list);
drv_sta_pre_rcu_remove(local, sta->sdata, sta);