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mac80211: BSS info: check channel first

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When we receive information about a BSS we check at some point
whether or not we think we're allowed to use the channel it is
on, but we do that fairly late. I don't think we should do it
that late, so do it earlier to avoid doing IBSS/mesh stuff on
that channel and then getting confused because it's disabled.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-09-08 11:05:10 +02:00 committed by John W. Linville
parent fe3fa82731
commit 5bda617576
1 changed files with 11 additions and 11 deletions
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22
net/mac80211/mlme.c
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@ -2602,7 +2602,15 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
DECLARE_MAC_BUF(mac);
DECLARE_MAC_BUF(mac2);
beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
if (elems->ds_params && elems->ds_params_len == 1)
freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
else
freq = rx_status->freq;
channel = ieee80211_get_channel(local->hw.wiphy, freq);
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id &&
elems->mesh_config && mesh_matches_local(elems, sdata)) {
@ -2645,16 +2653,6 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
rcu_read_unlock();
}
if (elems->ds_params && elems->ds_params_len == 1)
freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
else
freq = rx_status->freq;
channel = ieee80211_get_channel(local->hw.wiphy, freq);
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
#ifdef CONFIG_MAC80211_MESH
if (elems->mesh_config)
bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id,
@ -2723,6 +2721,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
bss->band = band;
beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
bss->timestamp = beacon_timestamp;
bss->last_update = jiffies;
bss->signal = rx_status->signal;