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mac80211: Do not scan for IBSS merge with a fixed BSSID.

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Currently, when we are on an IBSS network with no active station,
we would scan for other BSSID, even if fixed_bssid is on,  due to
a bug in ibss.c,  where fixed_channel would be checked instead of
fixed_bssid.  This would trigger useless scans where scan results
would not be used anyway.

This patch also reverts commit 39d02a7d90,
which assumed that the ifibss->fixed_channel check was legitimate
to disable single-channel scans.  IBSS single-channel scan should
now be fixed.

Signed-off-by: Nicolas Cavallari <cavallar@lri.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nicolas Cavallari 2012-01-26 13:36:34 +01:00 committed by John W. Linville
parent 6e1b1b2460
commit f1e3be1561
1 changed files with 3 additions and 2 deletions
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5
net/mac80211/ibss.c
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@ -655,14 +655,15 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
if (ieee80211_sta_active_ibss(sdata))
return;
if (ifibss->fixed_channel)
if (ifibss->fixed_bssid)
return;
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
"IBSS networks with same SSID (merge)\n", sdata->name);
ieee80211_request_internal_scan(sdata,
ifibss->ssid, ifibss->ssid_len, NULL);
ifibss->ssid, ifibss->ssid_len,
ifibss->fixed_channel ? ifibss->channel : NULL);
}
static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)