mac80211: Add 802.11h CSA support
Move to the advertised channel on reception of
a CSA element. This is needed for 802.11h compliance.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 7175ae8..ddb966f 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1552,7 +1552,9 @@
{
struct ieee80211_local *local = rx->local;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;
+ struct ieee80211_bss *bss;
int len = rx->skb->len;
if (!ieee80211_is_action(mgmt->frame_control))
@@ -1601,6 +1603,24 @@
return RX_DROP_MONITOR;
ieee80211_process_measurement_req(sdata, mgmt, len);
break;
+ case WLAN_ACTION_SPCT_CHL_SWITCH:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.chan_switch)))
+ return RX_DROP_MONITOR;
+
+ if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0)
+ return RX_DROP_MONITOR;
+
+ bss = ieee80211_rx_bss_get(local, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (!bss)
+ return RX_DROP_MONITOR;
+
+ ieee80211_process_chanswitch(sdata,
+ &mgmt->u.action.u.chan_switch.sw_elem, bss);
+ ieee80211_rx_bss_put(local, bss);
+ break;
}
break;
default: