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mac80211: Add 802.11h CSA support

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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>
This commit is contained in:
Sujith
2009-01-06 09:28:37 +05:30
committed by John W. Linville
parent b522ed56ef
commit c481ec9705
5 changed files with 122 additions and 1 deletions
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20
net/mac80211/rx.c
View File

@@ -1552,7 +1552,9 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
{
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 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
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: