mac80211: add explicit AP/GO driver operations

Depending on the driver, a lot of setup may be
necessary to start operating as an AP, some of
which may fail. Add an explicit AP start driver
method to make such failures easier to handle,
and add an AP stop driver method for symmetry.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 95bf3d5d009f..34fd3eba3090 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -922,6 +922,15 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
                 return err;
         changed |= err;
 
+        err = drv_start_ap(sdata->local, sdata);
+        if (err) {
+                old = rtnl_dereference(sdata->u.ap.beacon);
+                if (old)
+                        kfree_rcu(old, rcu_head);
+                RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
+                return err;
+        }
+
         ieee80211_bss_info_change_notify(sdata, changed);
 
         netif_carrier_on(dev);
@@ -979,6 +988,8 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
         sta_info_flush(local, sdata);
         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 
+        drv_stop_ap(sdata->local, sdata);
+
         /* free all potentially still buffered bcast frames */
         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
         skb_queue_purge(&sdata->u.ap.ps.bc_buf);