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linux/net/mac80211
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Igor Perminov 1f08e84ff6 mac80211: Fix [re]association power saving issue on AP side 
Consider the following step-by step:
1. A STA authenticates and associates with the AP and exchanges
traffic.
2. The STA reports to the AP that it is going to PS state.
3. Some time later the STA device goes to the stand-by mode (not only
its wi-fi card, but the device itself) and drops the association state
without sending a disassociation frame.
4. The STA device wakes up and begins authentication with an
Auth frame as it hasn't been authenticated/associated previously.

At the step 4 the AP "remembers" the STA and considers it is still in
the PS state, so the AP buffers frames, which it has to send to the STA.
But the STA isn't actually in the PS state and so it neither checks
TIM bits nor reports to the AP that it isn't power saving.
Because of that authentication/[re]association fails.

To fix authentication/[re]association stage of this issue, Auth, Assoc
Resp and Reassoc Resp frames are transmitted disregarding of STA's power
saving state.

N.B. This patch doesn't fix further data frame exchange after
authentication/[re]association. A patch in hostapd is required to fix
that.

Signed-off-by: Igor Perminov <igor.perminov@inbox.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-29 17:25:15 -04:00
..
aes_ccm.c mac80211: aes_ccm.c remove crypto wrapper and extra args 2008-07-08 14:16:02 -04:00
aes_ccm.h mac80211: pass scratch buffer directly, remove additional pointers 2008-07-08 14:16:02 -04:00
aes_cmac.c mac80211: 802.11w - Add BIP (AES-128-CMAC) 2009-01-29 16:00:02 -05:00
aes_cmac.h mac80211: 802.11w - Add BIP (AES-128-CMAC) 2009-01-29 16:00:02 -05:00
agg-rx.c mac80211: Add a timeout for frames in the RX reorder buffer 2009-05-06 15:15:04 -04:00
agg-tx.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-08-14 16:07:21 -07:00
cfg.c nl80211: add generation number to all dumps 2009-08-14 09:13:43 -04:00
cfg.h
debugfs_key.c mac80211: 802.11w - Use BIP (AES-128-CMAC) 2009-01-29 16:00:03 -05:00
debugfs_key.h mac80211: 802.11w - Use BIP (AES-128-CMAC) 2009-01-29 16:00:03 -05:00
debugfs_netdev.c mac80211: New stat counters for multicast and unicast forwarded frames 2009-08-20 11:36:04 -04:00
debugfs_netdev.h mac80211: revamp virtual interface handling 2008-07-14 14:30:07 -04:00
debugfs_sta.c mac80211: improve per-sta debugfs 2009-07-10 14:57:54 -04:00
debugfs_sta.h mac80211: RCU-ify STA info structure access 2008-03-06 15:30:46 -05:00
debugfs.c mac80211: remove master netdev 2009-07-24 15:05:30 -04:00
debugfs.h
driver-ops.h mac80211: remove tasklet enable/disable 2009-08-28 14:40:34 -04:00
driver-trace.c mac80211: fix sparse warnings/errors 2009-08-04 16:43:25 -04:00
driver-trace.h mac80211: allow configure_filter callback to sleep 2009-08-20 11:35:58 -04:00
event.c cfg80211: use proper allocation flags 2009-07-10 15:01:49 -04:00
ht.c cfg80211: clean up includes 2009-04-22 16:57:17 -04:00
ibss.c mac80211: redefine usage of the mac80211 workqueue 2009-08-04 16:44:14 -04:00
ieee80211_i.h wireless: convert drivers to netdev_tx_t 2009-09-01 01:14:04 -07:00
iface.c net: Add DEVTYPE support for Ethernet based devices 2009-09-11 12:54:55 -07:00
Kconfig wireless: remove mac80211 rate selection extra menu 2009-09-02 15:29:03 -04:00
key.c mac80211: fix todo lock 2009-07-10 15:01:48 -04:00
key.h nl80211: Add RSC configuration for new keys 2009-05-13 15:44:39 -04:00
led.c mac80211: rename files 2008-04-08 16:44:45 -04:00
led.h mac80211: rename files 2008-04-08 16:44:45 -04:00
main.c mac80211: remove tasklet enable/disable 2009-08-28 14:40:34 -04:00
Makefile cfg80211: self-contained wext handling where possible 2009-07-29 15:46:20 -04:00
mesh_hwmp.c mac80211: New stat counters for multicast and unicast forwarded frames 2009-08-20 11:36:04 -04:00
mesh_pathtbl.c mac80211: Move mpath and mpp growth to mesh workqueue. 2009-08-14 09:14:01 -04:00
mesh_plink.c mac80211: Fix invalid length passed to IE parser for PLINK CONFIRM frames 2009-08-14 09:14:06 -04:00
mesh.c mac80211: Update mesh config IE to 11s draft 3.02 2009-08-28 14:40:24 -04:00
mesh.h mac80211: Decouple fail_avg stats used by mesh from rate control algorithm. 2009-08-20 11:36:02 -04:00
michael.c mac80211: remove ieee80211_get_hdr_info 2008-07-08 14:16:01 -04:00
michael.h mac80211: remove ieee80211_get_hdr_info 2008-07-08 14:16:01 -04:00
mlme.c mac80211: improve/fix mlme messages 2009-09-28 16:55:05 -04:00
pm.c mac80211: fix configure_filter invocation after stop 2009-08-28 14:40:25 -04:00
rate.c mac80211: remove master netdev 2009-07-24 15:05:30 -04:00
rate.h mac80211: rate control status only for controlled packets 2009-03-27 20:13:15 -04:00
rc80211_minstrel_debugfs.c net: file_operations should be const 2009-09-02 01:03:53 -07:00
rc80211_minstrel.c rc80211_minstrel: fix contention window calculation 2009-09-23 11:35:42 -04:00
rc80211_minstrel.h mac80211: Remove unnused throughput field from minstrel_rate. 2009-08-28 14:40:34 -04:00
rc80211_pid_algo.c rc80211_pid_algo.c: remove unused variable declaration 2009-08-20 11:36:03 -04:00
rc80211_pid_debugfs.c net: file_operations should be const 2009-09-02 01:03:53 -07:00
rc80211_pid.h mac80211/drivers: rewrite the rate control API 2008-10-31 19:00:23 -04:00
rx.c mac80211: fix RX skb leaks 2009-08-28 14:40:41 -04:00
scan.c mac80211: fix DTIM setting 2009-09-23 11:35:53 -04:00
spectmgmt.c mac80211: move channel switch code 2009-05-20 14:46:25 -04:00
sta_info.c nl80211: add generation number to all dumps 2009-08-14 09:13:43 -04:00
sta_info.h mac80211: fix PS-poll response, race 2009-07-27 15:24:19 -04:00
tkip.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
tkip.h mac80211: tkip.c consolidate tkip IV writing in helper 2008-06-14 12:18:13 -04:00
tx.c mac80211: Fix [re]association power saving issue on AP side 2009-09-29 17:25:15 -04:00
util.c mac80211: fix configure_filter invocation after stop 2009-08-28 14:40:25 -04:00
wep.c cfg80211: rework key operation 2009-07-24 15:05:09 -04:00
wep.h cfg80211: rework key operation 2009-07-24 15:05:09 -04:00
wme.c mac80211: remove master netdev 2009-07-24 15:05:30 -04:00
wme.h mac80211: remove master netdev 2009-07-24 15:05:30 -04:00
wpa.c cfg80211: use proper allocation flags 2009-07-10 15:01:49 -04:00
wpa.h mac80211: 802.11w - Add BIP (AES-128-CMAC) 2009-01-29 16:00:02 -05:00