cfg80211: Use capability info to detect mesh beacons.

Mesh beacons no longer use all-zeroes BSSID.  Beacon frames for MBSS,
infrastructure BSS, or IBSS are differentiated by the Capability
Information field in the Beacon frame.  A mesh STA sets the ESS and IBSS
subfields to 0 in transmitted Beacon or Probe Response management
frames.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index ee1c96a866cc..d527fb7bd67a 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1002,6 +1002,11 @@ struct ieee80211_ht_info {
 
 #define WLAN_CAPABILITY_ESS             (1<<0)
 #define WLAN_CAPABILITY_IBSS            (1<<1)
+
+/* A mesh STA sets the ESS and IBSS capability bits to zero */
+#define WLAN_CAPABILITY_IS_MBSS(cap)    \
+        (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
+
 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 #define WLAN_CAPABILITY_PRIVACY         (1<<4)