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mac80211: Disallow changing chan type on monitor when CHAN_MODE_FIXED

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If you add a monitor interface in parallel to a normal interface
mac80211 will let you to change the channel type on the monitor
interface even if you are connected. Add an explicit check to
disallow this.

Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
[fix typo in commit log, use sdata instead of netdev]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Pontus Fuchs 2012-06-12 14:13:19 +02:00 committed by Johannes Berg
parent e979e33c39
commit ac4d82fa01
1 changed files with 2 additions and 1 deletions
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3
net/mac80211/cfg.c
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@ -689,7 +689,8 @@ static int ieee80211_set_channel(struct wiphy *wiphy,
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (local->oper_channel != chan)
if (local->oper_channel != chan ||
(!sdata && local->_oper_channel_type != channel_type))
return -EBUSY;
if (!sdata && local->_oper_channel_type == channel_type)
return 0;