Commit Graph

2773 Commits

Author SHA1 Message Date
John W. Linville
fb14ca438c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2011-11-11 11:34:47 -05:00
Emmanuel Grumbach
43e5885658 iwlwifi: avoid a panic when unloading the module with RF Kill
When HW RF kill switch is set to kill the radio, our NIC issues an
interrupt after we stop the APM module. When we unload the module,
the driver disables and cleans the interrupts before stopping the
APM. So we have a real interrupt (inta not zero) pending.
When this interrupts pops up the tasklet has already been killed
and we crash.

Here is a logical description of the flow:

disable and clean interrupts
synchronize interrupts
kill the tasklet

stop the APM <<== creates an RF kill interrupt

free_irq <<== somehow our ISR is called here and we crash

Here is the panic message:

[  201.313636] BUG: unable to handle kernel paging request at ffff8800911b7150
[  201.314541] IP: [<ffffffff8106d652>] tasklet_action+0x62/0x130
[  201.315149] PGD 1c06063 PUD db37f067 PMD db408067 PTE 80000000911b7160
[  201.316456] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[  201.317324] CPU 1
[  201.317495] Modules linked in: arc4 iwlwifi(-) mac80211 cfg80211 netconsole configfs binfmt_misc i915 drm_kms_helper drm uvcvideo i2c_algo_bit videodev dell_laptop dcdbas intel_agp dell_wmi intel_ips psmouse intel_gtt v4l2_compat_ioctl32 asix usbnet mii serio_raw video sparse_keymap firewire_ohci sdhci_pci sdhci firewire_core e1000e crc_itu_t [last unloaded: configfs]
[  201.323839]
[  201.324015] Pid: 2061, comm: modprobe Not tainted 3.1.0-rc9-wl #4 Dell Inc. Latitude E6410/0667CC
[  201.324736] RIP: 0010:[<ffffffff8106d652>]  [<ffffffff8106d652>] tasklet_action+0x62/0x130
[  201.325128] RSP: 0018:ffff88011bc43ea0  EFLAGS: 00010286
[  201.325338] RAX: ffff88008ae70000 RBX: ffff8800911b7150 RCX: ffff88008ae70028
[  201.325555] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88008ae70000
[  201.325775] RBP: ffff88011bc43ec0 R08: 0000000000000000 R09: 0000000000000000
[  201.325994] R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000001
[  201.326212] R13: 0000000000000006 R14: 0000000000000100 R15: ffff88008e259fd8
[  201.326431] FS:  00007f4b90ea9700(0000) GS:ffff88011bc40000(0000) knlGS:0000000000000000
[  201.326657] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  201.326864] CR2: ffff8800911b7150 CR3: 000000008fd6d000 CR4: 00000000000006e0
[  201.327083] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  201.327302] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  201.327521] Process modprobe (pid: 2061, threadinfo ffff88008e258000, task ffff88008ae70000)
[  201.327747] Stack:
[  201.330494]  0000000000000046 0000000000000030 0000000000000001 0000000000000006
[  201.333870]  ffff88011bc43f30 ffffffff8106cd8a ffffffff811e1016 ffff88011bc43f08
[  201.337186]  0000000100000046 ffff88008e259fd8 0000000a10be2160 0000000000000006
[  201.340458] Call Trace:
[  201.342994]  <IRQ>
[  201.345656]  [<ffffffff8106cd8a>] __do_softirq+0xca/0x250
[  201.348185]  [<ffffffff811e1016>] ? pde_put+0x76/0x90
[  201.350730]  [<ffffffff8131aeae>] ? do_raw_spin_unlock+0x5e/0xb0
[  201.353261]  [<ffffffff811e1016>] ? pde_put+0x76/0x90
[  201.355776]  [<ffffffff8163ccfc>] call_softirq+0x1c/0x30
[  201.358287]  [<ffffffff8101531d>] do_softirq+0x9d/0xd0
[  201.360823]  [<ffffffff8106cb05>] irq_exit+0xd5/0xf0
[  201.363330]  [<ffffffff8163d5d6>] do_IRQ+0x66/0xe0
[  201.365819]  [<ffffffff81632673>] common_interrupt+0x73/0x73
[  201.368257]  <EOI>

Cc: <stable@kernel.org> 3.1+
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-11 11:03:24 -05:00
Linus Torvalds
94956eed14 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
  forcedeth: fix a few sparse warnings (variable shadowing)
  forcedeth: Improve stats counters
  forcedeth: remove unneeded stats updates
  forcedeth: Acknowledge only interrupts that are being processed
  forcedeth: fix race when unloading module
  MAINTAINERS/rds: update maintainer
  wanrouter: Remove kernel_lock annotations
  usbnet: fix oops in usbnet_start_xmit
  ixgbe: Fix compile for kernel without CONFIG_PCI_IOV defined
  etherh: Add MAINTAINERS entry for etherh
  bonding: comparing a u8 with -1 is always false
  sky2: fix regression on Yukon Optima
  netlink: clarify attribute length check documentation
  netlink: validate NLA_MSECS length
  i825xx:xscale:8390:freescale: Fix Kconfig dependancies
  macvlan: receive multicast with local address
  tg3: Update version to 3.121
  tg3: Eliminate timer race with reset_task
  tg3: Schedule at most one tg3_reset_task run
  tg3: Obtain PCI function number from device
  ...
2011-11-07 10:55:33 -08:00
Wey-Yi Guy
f956c34e2a iwlwifi: don't perform "echo test" when cmd queue stuck
Perform "echo test" when cmd queue stuck detected, somethime it will cause
calltrace. I am not sure how to fix it yet, just remove the action now until
find a better way to handle it.

Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-02 15:23:13 -04:00
Wey-Yi Guy
8a39ef8ba0 iwlwifi: allow pci_enable_msi fail
Continue the init process even fail to enable msi

out_iounmap is no longer used, remove it

Reported-by: werner <w.landgraf@ru.ru>
Tested-by: werner <w.landgraf@ru.ru>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-02 15:23:13 -04:00
Emmanuel Grumbach
cda4ee3f2e iwlagn: fix the race in the unmapping of the HCMD
As Stanislaw pointed out, my patch

	iwlagn: fix a race in the unmapping of the TFDs

solved only part of the problem. The race still exists for TFDs of
the host commands. Fix that too.

Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-02 15:23:10 -04:00
Paul Gortmaker
9d9779e723 drivers/net: Add module.h to drivers who were implicitly using it
The device.h header was including module.h, making it present for
most of these drivers.  But we want to clean that up.  Call out the
include of module.h in the modular network drivers.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:07 -04:00
Stanislaw Gruszka
107ef97a17 iwlagn: fix priv->cfg->ht_params NULL pointer dereference
This fix regression introduced by commit:

commit 15b3f3b006
Author: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date:   Fri Jun 3 07:54:13 2011 -0700

    iwlagn: set smps mode after assoc for 1000 device

Also remove unneeded brackets on the way.

Address:
https://bugzilla.redhat.com/show_bug.cgi?id=744155

Cc: stable@kernel.org # 3.1+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:16 -04:00
Emmanuel Grumbach
7bd9897e1a iwlagn: add missing include to iwl-agn-rs.h
A few were missing

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:14 -04:00
Emmanuel Grumbach
397ede37a4 iwlagn: remove uneeded include to iwl-dev.h
iwl-core.c and iwl-trans-pcie-tx.c don't need to include iwl-dev.h

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:14 -04:00
Emmanuel Grumbach
6a686c6002 iwlagn: move iwl_enable_rfkill_int and kill iwl-helpers.h
Move iwl_enable_rfkill_int to iwl-core.h, and remove the empty
iwl-helpers.h

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:13 -04:00
Emmanuel Grumbach
8c22254454 iwlagn: move iwl_beacon_time_mask_XXX near to usage
Since iwl_beacon_time_mask_[high,low] are used in iwl-core.c only,
move them to there.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:13 -04:00
Johannes Berg
02f13d853c iwlagn: remove 6000 hw header
The constants can be moved together with
the similar ones for other devices and we
can then remove the file.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:13 -04:00
Johannes Berg
0b3e6f861a iwlagn: remove 5000 hw header
The inline function in this header is only used
in a single file, so we can move it there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:13 -04:00
Wey-Yi Guy
3246c4e6ad iwlagn: rename iwl-rx.c to iwl-agn-rx.c
After driver split, there were no shared functions between agn and legacy;
rename iwl-rx.c to iwl-agn-rx.c

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:13 -04:00
Wey-Yi Guy
c745f55baf iwlagn: merge station management functions
After driver split, no need to separate station management functions
in two files, merge it

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:13 -04:00
Wey-Yi Guy
ade4c649a0 iwlagn: rename all the mac80211 callback functions
Use the same calling style for all the mac80211 callback functions

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:12 -04:00
Wey-Yi Guy
770c72c481 iwlagn: add debug for mac80211 callback
Add IWL_DEBUG_MAC80211 debug for all mac80211 callback function

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:12 -04:00
Wey-Yi Guy
ef082cb1e5 iwlagn: don't stop rts/cts until last aggregation queue close
Once enable rts/cts for aggregation queue, do not disable until the
last aggregation queue closed.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:12 -04:00
Wey-Yi Guy
8921d4cab9 iwlagn: more info on warning for shutdown agg queue
When detect wrong state on shutdown aggregation queue, show more
information for debugging

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:12 -04:00
Wey-Yi Guy
add6ff1aa3 iwlwifi: update comments on how to enable debug flag
Modify comments on how to enable and change debug_level

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:12 -04:00
Wey-Yi Guy
f3129b7388 iwlagn: use low retry limit for WoWLAN
When in D3 state, use low retry limit for both data and rts

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:11 -04:00
Wey-Yi Guy
281e27c809 iwlagn: do nothing when disable agg in wrong state
When disable aggregation request come in on wrong agg state. ignore it

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:11 -04:00
Emmanuel Grumbach
9e8107ed90 iwlagn: warn only once if AGG state is wrong
This one can be _very_ noisy.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:11 -04:00
Emmanuel Grumbach
984ecb9293 iwlagn: fix a race in the unmapping of the TFDs
While inspecting the code, I saw that iwl_tx_queue_unmap modifies
the read pointer of the Tx queue without taking any locks. This means
that it can race with the reclaim flow. This can possibly lead to
a DMA warning complaining that we unmap the same buffer twice.

This is more a W/A than a fix since it is really weird to take
sta_lock inside iwl_tx_queue_unmap, but it can help until we revamp
the locking model in the transport layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:11 -04:00
Wey-Yi Guy
b319d3eb96 iwlagn: Add "_d" sku to 105 series of devices
Add additional sku to 105 series

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:11 -04:00
Wey-Yi Guy
5131a600f0 iwlagn: add "_d" sku to 6005 series of devices
Add additional sku to 6005 series of devices

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:11 -04:00
Wey-Yi Guy
78558cb441 iwlagn: set rts retry limit
setup the rts rety limit for tx command

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:10 -04:00
Wey-Yi Guy
c3322b30fe iwlagn: remove un-necessary step
No need to copy twice.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:10 -04:00
Johannes Berg
d36120c625 iwlagn: stop interrupts when suspending
Occasionally, the device will send interrupts
while it is resuming, at a point where we are
not set up again to handle them. This causes
the core IRQ handling to completely disable
the IRQ, and then the driver won't work again
until it is reloaded/rebound.

To fix this issue disable the IRQ on suspend,
this will cause us to only get interrupts
again after we've setup everything on resume.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:10 -04:00
Don Fry
26bfc0cfdb iwlagn: eliminate bus pointer from iwl_priv structure
A pointer to the bus structure is still in iwl_priv.  Finish
cleanup and remove it.

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:10 -04:00
Emmanuel Grumbach
3eae4bb176 iwlagn: kill hw_params.max_stations
Not needed since driver split.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:10 -04:00
Johannes Berg
c079166e1b iwlagn: send simple LQ command for WoWLAN
For some reason, WoWLAN doesn't always seem to
be happy with more advanced LQ commands. Since
we don't need them as we're not going to send
a lot of data, simply program the station with
the very simple default LQ command.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:10 -04:00
Johannes Berg
164ae97eb5 iwlagn: don't assign seqno to QoS Null frames
802.11 says:
"Sequence numbers for QoS (+)Null frames may be
set to any value."

However, if we use the normal counters then peers
will get confused with aggregation since there'll
be holes in the sequence number sequence.

To avoid that, don't assign sequence numbers to
QoS Null frames.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi GUy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Johannes Berg
3bde2b68cf iwlagn: update beacon smarter
Updating the beacon every time right after one was
transmitted is pointless, most of the time we might
not even have to update it. We will update it every
time it changes, which includes from set_tim(), a
callback iwlwifi didn't implement so far.

This also reduces latency for clients, previously
we would update the beacon right after the previous
one was transmitted, and then a TIM change would
only take effect after that again -- updating the
beacon right after the TIM changes makes the TIM
change go out to the air faster.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Wey-Yi Guy
7e4005cc4a iwlagn: add "echo test" command to debugfs
For command queue testing, add "echo test" to debugfs

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Wey-Yi Guy
46e7741ea1 iwlagn: check rf kill in queue stuck
check the RF KILL flag in queue stuck watch dog function

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Wey-Yi Guy
317d09f769 iwlagn: add "echo" test when command queue stuck
When detect command queue stuck, instead of reload the firmware
do the "echo" test to make sure it is really stuck before reload

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Wey-Yi Guy
05c89b917d iwlagn: add WARN if tx cmd complete come back late
For error condition, STATUS_HCMD_ACTIVE already got clear before receive
tx cmd complete, give warning

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Wey-Yi Guy
e80eb00276 iwlagn: add REPLY_ECHO host command
Add "echo" host command for testing and drebugging to make sure uCode still
responding

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:09 -04:00
Wey-Yi Guy
d10630aff7 iwlagn: add cmd queue pointer info when timeout
When detect cmd queue time out, display the current read/write pointer

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-14 14:48:08 -04:00
Wey-Yi Guy
af4dc88c56 iwlagn: separate init calib and rt calib
My previous patch for init calib cfg disable a set of calibration for both
init and runtime which cause performance issue, Fix it

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-11 16:41:07 -04:00
Eliad Peller
8a3a3c85e4 mac80211: pass vif param to conf_tx() callback
tx params should be configured per interface.
add ieee80211_vif param to the conf_tx callback,
and change all the drivers that use this callback.

The following spatch was used:
@rule1@
struct ieee80211_ops ops;
identifier conf_tx_op;
@@
	ops.conf_tx = conf_tx_op;

@rule2@
identifier rule1.conf_tx_op;
identifier hw, queue, params;
@@
	conf_tx_op (
-		struct ieee80211_hw *hw,
+		struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		u16 queue,
		const struct ieee80211_tx_queue_params *params) {...}

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-03 15:22:41 -04:00
Don Fry
3c607d27c8 iwlagn: rename iwlagn module iwlwifi and alias to iwlagn.
Rename the iwlagn module as iwlwifi in preparation for future
changes.  Add an alias to iwlagn for backward compatibility.

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-03 15:22:38 -04:00
Johannes Berg
47086fc51a mac80211: implement uAPSD
Add uAPSD support to mac80211. This is probably not
possible with all devices, so advertising it with
the cfg80211 flag will be left up to drivers that
want it.

Due to my previous patches it is now a fairly
straight-forward extension. Drivers need to have
accurate TX status reporting for the EOSP frame.
For drivers that buffer themselves, the provided
APIs allow releasing the right number of frames,
but then drivers need to set EOSP and more-data
themselves. This is documented in more detail in
the new code itself.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30 15:57:15 -04:00
Greg Dietsche
a76011e2cb iwlagn: iwl-agn-rs: remove unnecessary null check for sta and lq_sta
both sta and lq_sta are guaranteed to be not null in the
calling function so we don't need to check them here.

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-30 15:57:04 -04:00
Johannes Berg
84b1bec6d7 iwlagn: fix scan complete processing
When we cancel a scan, the completion runs
only from the workqueue. This can cause the
remain-on-channel scan to fail when another
one was just canceled, because we're still
aborting it.

To fix this, run the completion inline with
the lock still held before returning from
iwl_scan_cancel_timeout().

Also, to avoid the scan complete work from
completing a new scan prematurely, add a
new STATUS_SCAN_COMPLETE bit.

Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27 14:34:09 -04:00
Johannes Berg
a2fa2462f0 iwlagn: move iwl_process_scan_complete up
To make the next patch easier to read, move
the function up, it'll be needed earlier in
this file in the next patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27 14:34:09 -04:00
Johannes Berg
f253247a94 iwlagn: refactor scan complete
We'll need to be able to run scan complete
inline, not from the workqueue, so refactor
it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27 14:34:09 -04:00
Johannes Berg
98efb4a52b iwlagn: make iwl_scan_cancel_timeout void
The return value of iwl_scan_cancel_timeout()
isn't used anywhere, so let's just remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-27 14:34:08 -04:00