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66e01cf99e
linux/net/mac80211
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Luciano Coelho 66e01cf99e mac80211: only set CSA beacon when at least one beacon must be transmitted 
A beacon should never have a Channel Switch Announcement information
element with a count of 0, because a count of 1 means switch just
before the next beacon.  So, if a count of 0 was valid in a beacon, it
would have been transmitted in the next channel already, which is
useless.  A CSA count equal to zero is only meaningful in action
frames or probe_responses.

Fix the ieee80211_csa_is_complete() and ieee80211_update_csa()
functions accordingly.

With a CSA count of 0, we won't transmit any CSA beacons, because the
switch will happen before the next TBTT.  To avoid extra work and
potential confusion in the drivers, complete the CSA immediately,
instead of waiting for the driver to call ieee80211_csa_finish().

To keep things simpler, we also switch immediately when the CSA count
is 1, while in theory we should delay the switch until just before the
next TBTT.

Additionally, move the ieee80211_csa_finish() function to cfg.c,
where it makes more sense.

Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Acked-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:06 +01:00
..
aes_ccm.c mac80211: port CCMP to cryptoapi's CCM driver 2013-10-11 15:38:20 +02:00
aes_ccm.h mac80211: port CCMP to cryptoapi's CCM driver 2013-10-11 15:38:20 +02:00
aes_cmac.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
aes_cmac.h mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
agg-rx.c mac80211: improve aggregation debug messages 2013-01-18 21:55:15 +01:00
agg-tx.c mac80211: fix aggregation state with current drivers 2013-01-24 15:43:51 +01:00
cfg.c mac80211: only set CSA beacon when at least one beacon must be transmitted 2014-02-04 21:48:06 +01:00
cfg.h
chan.c mac80211: fix iflist_mtx/mtx locking in radar detection 2013-12-19 13:33:33 +01:00
debug.h mac80211: process the CSA frame for mesh accordingly 2013-10-28 15:05:28 +01:00
debugfs_key.c mac80211: move sdata debugfs dir to vif 2013-03-18 20:10:04 +01:00
debugfs_key.h
debugfs_netdev.c mac80211: sync dtim_count to TSF 2014-01-06 20:10:47 +01:00
debugfs_netdev.h
debugfs_sta.c mac80211: Tx frame latency statistics 2013-12-02 11:51:50 +01:00
debugfs_sta.h
debugfs.c mac80211: Tx frame latency statistics 2013-12-02 11:51:50 +01:00
debugfs.h mac80211: use __printf attribute in debugfs 2012-10-18 09:01:57 +02:00
driver-ops.h mac80211: add pre-RCU-sync sta removal driver operation 2013-12-16 11:29:44 +01:00
event.c
ht.c mac80211: allow to set smps mode to OFF in AP mode 2014-01-07 16:25:49 +01:00
ibss.c mac80211: only set CSA beacon when at least one beacon must be transmitted 2014-02-04 21:48:06 +01:00
ieee80211_i.h mac80211: only set CSA beacon when at least one beacon must be transmitted 2014-02-04 21:48:06 +01:00
iface.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-14 14:42:42 -08:00
Kconfig mac80211: process the CSA frame for mesh accordingly 2013-10-28 15:05:28 +01:00
key.c mac80211: free all AP/VLAN keys at once 2013-12-16 11:29:48 +01:00
key.h mac80211: free all AP/VLAN keys at once 2013-12-16 11:29:48 +01:00
led.c mac80211: use oneshot blink API for LED triggers 2013-08-01 10:48:49 +02:00
led.h mac80211: use oneshot blink API for LED triggers 2013-08-01 10:48:49 +02:00
main.c mac80211: fix memory leak in register_hw() error path 2014-01-06 16:02:34 +01:00
Makefile mac80211: mesh power save basics 2013-02-04 18:57:47 +01:00
mesh_hwmp.c mac80211: use put_unaligned_le in mesh when necessary 2013-11-25 20:51:55 +01:00
mesh_pathtbl.c mac80211: use put_unaligned_le in mesh when necessary 2013-11-25 20:51:55 +01:00
mesh_plink.c mac80211: enable WME for peer mesh STA 2014-01-06 17:43:06 +01:00
mesh_ps.c mac80211: use put_unaligned_le16 in mesh_plink_frame_tx 2013-11-25 20:51:53 +01:00
mesh_sync.c mac80211: update adjusting TBTT bit in beacon 2013-12-16 14:21:22 +01:00
mesh.c mac80211: only set CSA beacon when at least one beacon must be transmitted 2014-02-04 21:48:06 +01:00
mesh.h mac80211: use put_unaligned_le in mesh when necessary 2013-11-25 20:51:55 +01:00
michael.c
michael.h
mlme.c mac80211: fix iflist_mtx/mtx locking in radar detection 2013-12-19 13:33:33 +01:00
offchannel.c mac80211: Run deferred scan if last roc_list item is not started 2013-09-30 12:36:56 +02:00
pm.c mac80211: don't delay station destruction 2013-12-16 11:29:45 +01:00
rate.c mac80211: respect rate mask in TX 2013-10-15 15:16:29 +02:00
rate.h Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2013-12-02 14:25:38 -05:00
rc80211_minstrel_debugfs.c mac80211: cosmetics for minstrel_debugfs 2013-04-17 17:08:23 +02:00
rc80211_minstrel_ht_debugfs.c mac80211: minstrel_ht: replace some occurences of MCS_GROUP_RATES 2013-11-25 20:52:07 +01:00
rc80211_minstrel_ht.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
rc80211_minstrel_ht.h mac80211/minstrel_ht: use the new rate control API 2013-04-22 16:16:41 +02:00
rc80211_minstrel.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
rc80211_minstrel.h mac80211/minstrel: use the new rate control API 2013-04-22 16:16:41 +02:00
rc80211_pid_algo.c mac80211/rc80211: add chandef to rate initialization 2013-07-16 09:58:02 +03:00
rc80211_pid_debugfs.c mac80211: fix some snprintf misuses 2013-10-01 12:16:51 +02:00
rc80211_pid.h
rx.c mac80211: clean up prepare_for_handlers() return value 2014-01-07 16:23:24 +01:00
scan.c mac80211: reschedule sched scan after HW restart 2013-12-16 13:47:26 +01:00
spectmgmt.c mac80211: fix the mesh channel switch support 2013-11-25 16:50:13 +01:00
sta_info.c mac80211: handle MMPDUs at EOSP correctly 2014-01-10 09:50:02 +01:00
sta_info.h mac80211: optimise mixed AP/VLAN station removal 2013-12-16 11:29:47 +01:00
status.c mac80211: Tx frame latency statistics 2013-12-02 11:51:50 +01:00
tkip.c mac80211: fix checkpatch errors 2013-12-18 10:33:06 +01:00
tkip.h
trace.c
trace.h mac80211: add tracing for ieee80211_sta_set_buffered 2014-01-06 12:09:01 +01:00
tx.c mac80211: only set CSA beacon when at least one beacon must be transmitted 2014-02-04 21:48:06 +01:00
util.c mac80211: sync dtim_count to TSF 2014-01-06 20:10:47 +01:00
vht.c mac80211: enable easier manipulation of VHT beamforming caps 2013-11-25 20:52:01 +01:00
wep.c wireless: move crypto constants to ieee80211.h 2013-05-16 22:39:41 +02:00
wep.h
wme.c mac80211: Add support for QoS mapping 2013-12-19 16:30:58 +01:00
wme.h
wpa.c mac80211: clean up garbage in comment 2014-01-07 16:21:56 +01:00
wpa.h mac80211: add generic cipher scheme support 2013-11-25 20:50:52 +01:00