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mac80211: fix driver offchannel notification when the channel does not change 

When running in client mode and associating to an AP, the channel
change is usually performed with the offchannel flag still set.
However after the assoc is complete, the following channel change event
is suppressed because the run time channel is already set to the operating channel.
Fix this by sending channel change notifications to the driver even if
only the offchannel flag changes.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-07-29 17:36:43 +02:00 committed by John W. Linville
parent 4d7ede7f5a
commit ffd2778bb9
1 changed files with 4 additions and 1 deletions
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5
net/mac80211/main.c
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@ -99,11 +99,13 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
int ret = 0;
int power;
enum nl80211_channel_type channel_type;
u32 offchannel_flag;
might_sleep();
scan_chan = local->scan_channel;
offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
if (scan_chan) {
chan = scan_chan;
channel_type = NL80211_CHAN_NO_HT;
@ -117,8 +119,9 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
channel_type = local->_oper_channel_type;
local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
}
offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
if (chan != local->hw.conf.channel ||
if (offchannel_flag || chan != local->hw.conf.channel ||
channel_type != local->hw.conf.channel_type) {
local->hw.conf.channel = chan;
local->hw.conf.channel_type = channel_type;