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authorJavier Cardona <javier@cozybit.com>2011-05-04 21:24:56 +0400
committerJohn W. Linville <linville@tuxdriver.com>2011-05-11 22:37:48 +0400
commit0a35d36d6f019bde6c98812456798275b02e5aee (patch)
treeb2605d9a45226072c430d35f39f82082d99df8a8 /net/wireless
parent915b5c50f8f45e78ea96d93f1e49edb20c9470bd (diff)
downloadlinux-0a35d36d6f019bde6c98812456798275b02e5aee.tar.xz
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>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/scan.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index fbf6f33ae4d0..62e542a2b192 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -210,7 +210,7 @@ static bool is_mesh(struct cfg80211_bss *a,
{
const u8 *ie;
- if (!is_zero_ether_addr(a->bssid))
+ if (!WLAN_CAPABILITY_IS_MBSS(a->capability))
return false;
ie = cfg80211_find_ie(WLAN_EID_MESH_ID,
@@ -248,11 +248,7 @@ static int cmp_bss(struct cfg80211_bss *a,
if (a->channel != b->channel)
return b->channel->center_freq - a->channel->center_freq;
- r = memcmp(a->bssid, b->bssid, ETH_ALEN);
- if (r)
- return r;
-
- if (is_zero_ether_addr(a->bssid)) {
+ if (WLAN_CAPABILITY_IS_MBSS(a->capability | b->capability)) {
r = cmp_ies(WLAN_EID_MESH_ID,
a->information_elements,
a->len_information_elements,
@@ -267,6 +263,10 @@ static int cmp_bss(struct cfg80211_bss *a,
b->len_information_elements);
}
+ r = memcmp(a->bssid, b->bssid, ETH_ALEN);
+ if (r)
+ return r;
+
return cmp_ies(WLAN_EID_SSID,
a->information_elements,
a->len_information_elements,
@@ -407,7 +407,7 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev,
res->ts = jiffies;
- if (is_zero_ether_addr(res->pub.bssid)) {
+ if (WLAN_CAPABILITY_IS_MBSS(res->pub.capability)) {
/* must be mesh, verify */
meshid = cfg80211_find_ie(WLAN_EID_MESH_ID,
res->pub.information_elements,