1
linux/net/mac80211
Jouni Malinen 4d050f1dae mac80211: Add a timeout for frames in the RX reorder buffer
This patch allows skbs to be released from the RX reorder buffer in
case they have been there for an unexpectedly long time without us
having received the missing frames before them. Previously, these
frames were only released when the reorder window moved and that could
take very long time unless new frames were received constantly (e.g.,
TCP connections could be killed more or less indefinitely).

This situation should not happen very frequently, but it looks like
there are some scenarious that trigger it for some reason. As such,
this should be considered mostly a workaround to speed up recovery
from unexpected siutation that could result in connections hanging for
long periods of time.

The changes here will only check for timeout situation when adding new
RX frames to the reorder buffer. It does not handle all possible
cases, but seems to help for most cases that could result from common
network usage (e.g., TCP retrying at least couple of times). For more
completely coverage, a timer could be used to periodically check
whether there are any frames remaining in the reorder buffer if no new
frames are received.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-05-06 15:15:04 -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 mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
cfg.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -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: split IBSS/managed code 2009-02-27 14:51:42 -05:00
debugfs_netdev.h mac80211: revamp virtual interface handling 2008-07-14 14:30:07 -04:00
debugfs_sta.c mac80211: 802.11w - STA flag for MFP 2009-01-29 16:00:00 -05:00
debugfs_sta.h
debugfs.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
debugfs.h
driver-ops.h mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
event.c nl80211: Add Michael MIC failure event 2009-04-22 16:54:28 -04:00
ht.c cfg80211: clean up includes 2009-04-22 16:57:17 -04:00
ibss.c mac80211: tell driver when idle 2009-05-06 15:14:51 -04:00
ieee80211_i.h mac80211: tell driver when idle 2009-05-06 15:14:51 -04:00
iface.c mac80211: tell driver when idle 2009-05-06 15:14:51 -04:00
Kconfig mac80211: enable PS by default 2009-04-22 16:57:16 -04:00
key.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
key.h mac80211: 802.11w - Use BIP (AES-128-CMAC) 2009-01-29 16:00:03 -05:00
led.c
led.h
main.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
Makefile mac80211: split IBSS/managed code 2009-02-27 14:51:42 -05:00
mesh_hwmp.c mac80211: fix RX aggregation timeouts 2009-02-13 13:45:32 -05:00
mesh_pathtbl.c mac80211: mesh portal functionality support 2008-09-24 16:18:02 -04:00
mesh_plink.c wireless: restrict to 32 legacy rates 2009-01-29 16:01:09 -05:00
mesh.c mac80211: unify config_interface and bss_info_changed 2009-05-06 15:14:36 -04:00
mesh.h mac80211: use cfg80211s BSS infrastructure 2009-02-13 13:45:58 -05:00
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: Fix sparse warning for ssid_len on ieee80211_sta_config_auth() 2009-05-06 15:15:04 -04:00
pm.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
rate.c mac80211: rate control status only for controlled packets 2009-03-27 20:13:15 -04:00
rate.h mac80211: rate control status only for controlled packets 2009-03-27 20:13:15 -04:00
rc80211_minstrel_debugfs.c mac80211: correct warnings in minstrel rate control algorithm 2008-10-27 17:46:11 -04:00
rc80211_minstrel.c mac80211: Fix handling of retry count of NO_ACK frames in minstrel 2009-05-06 15:14:50 -04:00
rc80211_minstrel.h minstrel: improve performance for non-MRR drivers 2008-10-31 19:00:36 -04:00
rc80211_pid_algo.c mac80211: Fix handling of retry count of NO_ACK frames in PID 2009-05-06 15:14:50 -04:00
rc80211_pid_debugfs.c mac80211/drivers: rewrite the rate control API 2008-10-31 19:00:23 -04:00
rc80211_pid.h mac80211/drivers: rewrite the rate control API 2008-10-31 19:00:23 -04:00
rx.c mac80211: Add a timeout for frames in the RX reorder buffer 2009-05-06 15:15:04 -04:00
scan.c mac80211: tell driver when idle 2009-05-06 15:14:51 -04:00
spectmgmt.c cfg80211: clean up includes 2009-04-22 16:57:17 -04:00
sta_info.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
sta_info.h mac80211: Add a timeout for frames in the RX reorder buffer 2009-05-06 15:15:04 -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: Warn if the rate controller requests retries for a NO_ACK frame 2009-05-06 15:14:51 -04:00
util.c mac80211: add driver ops wrappers 2009-05-06 15:14:37 -04:00
wep.c mac80211: rewrite fragmentation 2009-03-27 20:13:21 -04:00
wep.h mac80211: minor code cleanups 2008-10-31 18:05:59 -04:00
wext.c mac80211: report operating frequency rather than current 2009-05-06 15:15:02 -04:00
wme.c mac80211: Fix WMM ACM parsing and AC downgrade operation 2009-03-16 18:09:27 -04:00
wme.h mac80211: fix aggregation for hardware with ampdu queues 2009-02-27 14:51:42 -05:00
wpa.c nl80211: Add Michael MIC failure event 2009-04-22 16:54:28 -04:00
wpa.h mac80211: 802.11w - Add BIP (AES-128-CMAC) 2009-01-29 16:00:02 -05:00