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cfg80211: restrict AP beacon intervals

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Multiple virtual AP interfaces can currently try
to use different beacon intervals, but that just
leads to problems since it won't actually be done
that way by drivers. Return an error in this case
to make sure it won't be done wrong.

Also, ignore attempts to change the DTIM period
or beacon interval during the lifetime of the BSS.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2011-05-09 18:41:15 +02:00 • committed by John W. Linville
parent 15cb309614
commit 56d1893d94
5 changed files with 56 additions and 17 deletions
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1
net/wireless/core.c
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@ -787,6 +787,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
default:
break;
}
wdev->beacon_interval = 0;
break;
case NETDEV_DOWN:
dev_hold(dev);