cfg80211: add channel tracking for AP and mesh

We need to know which channel is used by a running
AP and mesh for channel context accounting and
finding matching/active interface combination.

STA/IBSS have current_bss already which allows us
to check which channel a vif is tuned to.
Non-fixed channel IBSS can be handled with
additional changes.

Monitor mode is going to be handled differently.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/wireless/ap.c b/net/wireless/ap.c
index 45199cca63d..fcc60d8dbef 100644
--- a/net/wireless/ap.c
+++ b/net/wireless/ap.c
@@ -24,8 +24,10 @@ static int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
                 return -ENOENT;
 
         err = rdev->ops->stop_ap(&rdev->wiphy, dev);
-        if (!err)
+        if (!err) {
                 wdev->beacon_interval = 0;
+                wdev->channel = NULL;
+        }
 
         return err;
 }