kernel.git/net/mac80211/util.c, branch linux-2.6.34.y

mac80211: move netdev queue enabling to correct spot

2010-03-30T19:37:28Z

"mac80211: fix skb buffering issue" still left a race between enabling the hardware queues and the virtual interface queues. In hindsight it's totally obvious that enabling the netdev queues for a hardware queue when the hardware queue is enabled is wrong, because it could well possible that we can fill the hw queue with packets we already have pending. Thus, we must only enable the netdev queues once all the pending packets have been processed and sent off to the device. In testing, I haven't been able to trigger this race condition, but it's clearly there, possibly only when aggregation is being enabled. Signed-off-by: Johannes Berg Cc: stable@kernel.org Signed-off-by: John W. Linville

mac80211: correct typos in "unavailable upon resume" warning

2010-03-30T19:37:22Z

Signed-off-by: John W. Linville

mac80211: tear down all agg queues when restart/reconfig hw

2010-02-08T21:50:54Z

When there is a need to restart/reconfig hw, tear down all the aggregation queues and let the mac80211 and driver get in-sync to have the opportunity to re-establish the aggregation queues again. Need to wait until driver re-establish all the station information before tear down the aggregation queues, driver(at least iwlwifi driver) will reject the stop aggregation queue request if station is not ready. But also need to make sure the aggregation queues are tear down before waking up the queues, so mac80211 will not sending frames with aggregation bit set. Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville

mac80211: allow station add/remove to sleep

2010-02-08T21:50:53Z

Many drivers would like to sleep during station addition and removal, and currently have a high complexity there from not being able to. This introduces two new callbacks sta_add() and sta_remove() that drivers can implement instead of using sta_notify() and that can sleep, and the new sta_add() callback is also allowed to fail. The reason we didn't do this previously is that the IBSS code wants to insert stations from the RX path, which is a tasklet, so cannot sleep. This patch will keep the station allocation in that path, but moves adding the station to the driver out of line. Since the addition can now fail, we can have IBSS peer structs the driver rejected -- in that case we still talk to the station but never tell the driver about it in the control.sta pointer. If there will ever be a driver that has a low limit on the number of stations and that cannot talk to any stations that are not known to it, we need to do come up with a new strategy of handling larger IBSSs, maybe quicker expiry or rejecting peers. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville

mac80211: fix memory leak in ieee80211_send_probe_req

2010-01-15T22:02:08Z

This patch fixes memory leak in ieee80211_send_probe_req, which is introduced in 7c12ce8b854df346388ea56d684784e3484012cf: mac80211: use Probe Request template when sending a direct scan The patch is against the latest wireless-test tree. Signed-off-by: Ming Lei Reviewed-by: Kalle Valo Signed-off-by: John W. Linville

mac80211: add U-APSD client support

2010-01-12T19:20:58Z

Add Unscheduled Automatic Power-Save Delivery (U-APSD) client support. The idea is that the data frames from the client trigger AP to send the buffered frames with ACs which have U-APSD enabled. This decreases latency and makes it possible to save even more power. Driver needs to use IEEE80211_HW_UAPSD to enable the feature. The current implementation assumes that firmware takes care of the wakeup and hardware needing IEEE80211_HW_PS_NULLFUNC_STACK is not yet supported. Tested with wl1251 on a Nokia N900 and Cisco Aironet 1231G AP and running various test traffic with ping. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville

mac80211: flush workqueue before calling driver ->stop() method

2010-01-12T19:20:56Z

Since commit "mwl8k: handle station database update for AP's sta entry via ->sta_notify()", mwl8k every now and then gets a command timeout when ifconfig'ing a STA interface down. This turns out to be due to mwl8k_stop() being called while the work queue item that was scheduled by mwl8k_sta_notify() to remove the STA entry for the associated AP is still queued, and the former disables interrupts so that when the latter eventually runs, a command completion interrupt is never seen. Fix this by changing ieee80211_stop_device() so that the workqueue is flushed before drv_stop() is called, instead of doing it the other way around as is done now. (As ->stop() is allowed to sleep, there isn't any reason for drivers to queue work from within it.) Signed-off-by: Lennert Buytenhek Signed-off-by: John W. Linville

mac80211: use Probe Request template when sending a direct scan

2010-01-12T18:51:25Z

As mac80211 now has a separate function for creating Probe Request templates, better to use it when sending direct Probe Requests to an AP. Only the bssid needs to be updated in the template before sending it. Signed-off-by: Kalle Valo Signed-off-by: John W. Linville

Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6

2010-01-05T22:18:59Z

Conflicts: net/mac80211/iface.c

mac80211: No need to include WEXT headers here

2010-01-05T22:13:13Z

Remove the forgotten linux/wireless.h inclusion from mac80211. Signed-off-by: Jouni Malinen Signed-off-by: John W. Linville