cfg80211: ignore invalid BSSIDs when looking for BSSes

When looking for a BSS matching given parameters, ignore invalid
BSSIDs. This avoids, for example, trying to join an IBSS that has
a multicast BSSID, which isn't supported by all drivers nor is it
a valid configuration of the IBSS so better create a new one with
a correctly chosen random BSSID.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 13f611469e6c..cf478c075ddc 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -540,6 +540,8 @@ struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
                         continue;
                 if (channel && bss->pub.channel != channel)
                         continue;
+                if (!is_valid_ether_addr(bss->pub.bssid))
+                        continue;
                 /* Don't get expired BSS structs */
                 if (time_after(now, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE) &&
                     !atomic_read(&bss->hold))