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

mac80211: fix SMPS request

2010-10-13T19:45:23Z

It looks like I submitted a different patch than I tested, because clearly the code in mac80211 is missing actually propagating the requested SMPS mode. Fix that! Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

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: allow drivers to request SM PS mode change

2010-08-16T19:26:40Z

Sometimes drivers have more information than the stack about how their antennas/chains are used, and may require that the SM PS mode be changed. This could happen, for example, when detecting that the user disconnected an antenna. Thus this patch introduces API to allow drivers to request SM PS mode changes. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: skip HT parsing if HW does not support HT

2010-07-16T18:03:42Z

This patch will also fix the odd freeze which occurred when minstrel_ht connects to an 802.11n network with legacy hardware. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville

mac80211: change TX aggregation locking

2010-06-14T19:39:28Z

To prepare for allowing drivers to sleep in ampdu_action, change the locking in the TX aggregation code to use the mutex the RX part already uses. The spinlock is still necessary around some code to avoid races with TX, but now we can also synchronize_net() to avoid getting an inconsistent sequence number. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: change RX aggregation locking

2010-06-14T19:39:28Z

To prepare for allowing drivers to sleep in ampdu_action, change the locking in the RX aggregation code to use a mutex, so that it would already allow drivers to sleep. But explicitly disable BHs around the callback for now since the TX part cannot yet sleep, and drivers' locking might require it. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: defer RX agg session teardown to work

2010-06-14T19:39:28Z

Since we want the code to be able to sleep in the future, it must not be called from the timer directly. To prepare, move it out into the aggregation work. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: move BA session work

2010-06-14T19:39:27Z

Move the block-ack session works into common code, since it will be needed for RX agg too in the next patches. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: make TX aggregation start/stop request async

2010-06-14T19:39:27Z

When the driver or rate control requests starting or stopping an aggregation session, that currently causes a direct callback into the driver, which could potentially cause locking problems. Also, the functions need to be callable from contexts that cannot sleep, and thus will interfere with making the ampdu_action callback sleeping. To address these issues, add a new work item for each station that will process any start or stop requests out of line. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: use RCU for TX aggregation

2010-06-14T19:39:27Z

Currently we allocate some memory for each TX aggregation session and additionally keep a state bitmap indicating the state it is in. By using RCU to protect the pointer, moving the state into the structure and some locking trickery we can avoid locking when the TX agg session is fully operational. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville