commit c481ec9705d4a5d566393bc17374cfd82c870715
author Sujith <Sujith.Manoharan@atheros.com> Tue Jan 06 09:28:37 2009 +0530
committer John W. Linville <linville@tuxdriver.com> Thu Jan 29 15:59:50 2009 -0500
tree 383b90aa8cf172ee81a7e91c49440cf75c8c0278
parent b522ed56ef90f5078a2a1253e390299723510a89

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>

net/mac80211/mlme.c

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 2db5660..cac4f65 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1629,6 +1629,13 @@
 	if (!bss)
 		return;
 
+	if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
+	    (memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0)) {
+		struct ieee80211_channel_sw_ie *sw_elem =
+			(struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
+		ieee80211_process_chanswitch(sdata, sw_elem, bss);
+	}
+
 	/* was just updated in ieee80211_bss_info_update */
 	beacon_timestamp = bss->timestamp;
 
@@ -1765,6 +1772,9 @@
 	    memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
 		return;
 
+	if (rx_status->freq != local->hw.conf.channel->center_freq)
+		return;
+
 	ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
 				 elems.wmm_param_len);
 
@@ -2425,8 +2435,11 @@
 
 	ifsta = &sdata->u.sta;
 	INIT_WORK(&ifsta->work, ieee80211_sta_work);
+	INIT_WORK(&ifsta->chswitch_work, ieee80211_chswitch_work);
 	setup_timer(&ifsta->timer, ieee80211_sta_timer,
 		    (unsigned long) sdata);
+	setup_timer(&ifsta->chswitch_timer, ieee80211_chswitch_timer,
+		    (unsigned long) sdata);
 	skb_queue_head_init(&ifsta->skb_queue);
 
 	ifsta->capab = WLAN_CAPABILITY_ESS;