kernel.git/net/mac80211/util.c, branch linux-2.6.37.y

mac80211: avoid transmitting delBA to old AP

2010-10-06T20:30:40Z

When roaming while we have active BA session, we can end up transmitting delBA frames to the old AP while we're already on the new AP's channel, which can cause warnings. Simply avoid sending those frames, but still tear down the internal session state, since they are not really necessary anyway as we will implicitly disassociate when sending the association to the new AP. Signed-off-by: Johannes Berg Acked-by: Luis R. Rodriguez Signed-off-by: John W. Linville

mac80211: fix deadlock with multiple interfaces

2010-10-05T17:37:51Z

The locking around ieee80211_recalc_smps is buggy -- it cannot acquire another interface's mutex while the iflist mutex is held because another code path could be holding the iface mutex and trying to acquire the iflist mutex. But the locking is also unnecessary, we only check "ifmgd->associated" as a bool, and don't use the pointer (in check_mgd_smps). Reported-by: Ben Greear Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: Add DS Parameter Set into Probe Request on 2.4 GHz

2010-09-24T19:54:28Z

IEEE Std 802.11k-2008 added DS Parameter Set information element into Probe Request frames as an optional information on 2.4 GHz band (and mandatory, if radio measurements are enabled). This allows APs to filter out Probe Request frames that may be received from neighboring overlapping channels and by doing so, reduce the number of unnecessary frames in the air. Make mac80211 add this IE into Probe Request frames whenever the channel is known (i.e., whenever hwscan is not used). Signed-off-by: Jouni Malinen Acked-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: Filter ProbeReq SuppRates based on TX rate mask

2010-09-24T19:54:27Z

If the TX rate set has been masked, the removed rates can also be removed from the Supported Rates and Extended Supported Rates IEs in Probe Request frames. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville

mac80211: add p2p device type support

2010-09-16T19:46:07Z

When a driver advertises p2p device support, mac80211 will handle it, but internally it will rewrite the interface type to STA/AP rather than P2P-STA/GO since otherwise a lot of paths need to be touched that are otherwise identical. A p2p boolean tells drivers whether or not a given interface will be used for p2p or not. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

cfg80211/mac80211: use lockdep_assert_held

2010-09-16T19:46:00Z

Instead of using a WARN_ON(!mutex_is_locked()) use lockdep_assert_held() which compiles away completely when lockdep isn't enabled, and also is a more accurate assertion since it checks that the current thread is holding the mutex. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: fix offchannel queue stop

2010-08-27T17:53:31Z

Somebody noticed this problem, and I outlined to them how to fix it, but haven't heard back from them. So while I was adding the state field I figured I could use it to fix it. The problem, as I understand it, is that when we go offchannel while the driver has a queue stopped, the driver will likely start draining the queue and then enable it while offchannel. This in turn will enable the interface queue, and that leads to transmitting data frames on the wrong channel. Fix this by keeping track of offchannel status per interface, and not enabling the interface queues on interfaces that are offchannel when the driver enables a queue. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: switch to ieee80211_sdata_running

2010-08-27T17:53:30Z

Since the introduction of ieee80211_sdata_running(), some new code was introduced that uses netif_running() instead. Switch all these instances over. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: use subqueue helpers

2010-08-27T17:27:08Z

There are subqueue helpers so that we don't need to get the TX queue and then wake/stop it, use those helpers. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

cfg80211/mac80211: extensible frame processing

2010-08-24T20:27:56Z

Allow userspace to register for more than just action frames by giving the frame subtype, and make it possible to use this in various modes as well. With some tweaks and some added functionality this will, in the future, also be usable in AP mode and be able to replace the cooked monitor interface currently used in that case. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville