mac80211: clear bssid on auth/assoc failure

ifmgd->bssid wasn't cleared properly in some
auth/assoc failure cases, causing mac80211 and
the low-level driver to go out of sync.

Clear ifmgd->bssid on failure, and notify the driver.

Cc: stable@kernel.org # 3.4+
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a4a5acdbaa4dd3ac5e2fb8c5f0ff1d1b97553d6a..f76b83341cf9a39db0e14092a85f2e576245a306 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3248,6 +3248,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
        goto out_unlock;
 
  err_clear:
+       memset(ifmgd->bssid, 0, ETH_ALEN);
+       ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
        ifmgd->auth_data = NULL;
  err_free:
        kfree(auth_data);
@@ -3439,6 +3441,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
        err = 0;
        goto out;
  err_clear:
+       memset(ifmgd->bssid, 0, ETH_ALEN);
+       ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
        ifmgd->assoc_data = NULL;
  err_free:
        kfree(assoc_data);