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This reverts commit 5ed3bc7288487bd4f891f420a07319e0b538b4fe.
It turns-out that not all drivers are calling ieee80211_tx_status from a
compatible context. Revert this for now and try again later...
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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We never delete the addBA response timer, which
is typically fine, but if the station it belongs
to is deleted very quickly after starting the BA
session, before the peer had a chance to reply,
the timer may fire after the station struct has
been freed already. Therefore, we need to delete
the timer in a suitable spot -- best when the
session is being stopped (which will happen even
then) in which case the delete will be a no-op
most of the time.
I've reproduced the scenario and tested the fix.
This fixes the crash reported at
http://mid.gmane.org/4CAB6F96.6090701@candelatech.com
Cc: stable@kernel.org
Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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wireless-testing
commit 37e5bf6535a4d697fb9fa6f268a8354a612cbc00
Author: Luis R. Rodriguez <lrodriguez@atheros.com>
Date: Sat Jun 12 00:33:40 2010 -0400
ath9k_hw: fix clock rate calculations for ANI
This commit accidentally broke clock rate calculation by doubling the
calculated clock rate
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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iwl3945's scan_completed calls into the mac80211 stack which triggers a
warn on if there is no scan outstanding.
This can be avoided by not calling scan_completed but abort_scan in
iwl3945_request_scan in the done: branch of the function which is used
as an error out.
The done: branch seems to be an error-out branch, as, for example, if
iwl_is_ready(priv) returns false the done: branch is executed.
NOTE:
I'm not familiar with the driver at all.
I just quickly scanned as a reaction to
https://bugzilla.kernel.org/show_bug.cgi?id=17722
the users of scan_completed in the iwl3945 driver and noted the odd
discrepancy between the comment above this instance and the comment in
mac80211 scan_completed function.
Signed-off-by: Florian Mickler <florian@mickler.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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commit 8c0c709eea5cbab97fb464cd68b06f24acc58ee1
Author: Johannes Berg <johannes@sipsolutions.net>
Date: Wed Nov 25 17:46:15 2009 +0100
mac80211: move cmntr flag out of rx flags
moved the CMTR flag into the skb's status, and
in doing so introduced a use-after-free -- when
the skb has been handed to cooked monitors the
status setting will touch now invalid memory.
Additionally, moving it there has effectively
discarded the optimisation -- since the bit is
only ever set on freed SKBs, and those were a
copy, it could never be checked.
For the current release, fixing this properly
is a bit too involved, so let's just remove the
problematic code and leave userspace with one
copy of each frame for each virtual interface.
Cc: stable@kernel.org [2.6.33+]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When a driver doesn't fill the entire buffer, old
heap contents may remain, and if it also doesn't
update the length properly, this old heap content
will be copied back to userspace.
It is very unlikely that this happens in any of
the drivers using private ioctls since it would
show up as junk being reported by iwpriv, but it
seems better to be safe here, so use kzalloc.
Reported-by: Jeff Mahoney <jeffm@suse.com>
Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When uCode error condition detected, driver try to perform either
rf reset or firmware reload in order bring device back to
working condition.
If rf reset is required and scan is in process, there is no need
to issue rf reset since scan already reset the rf.
If firmware reload is required and scan is in process, skip the
reload request. There is a possibility firmware reload during
scan cause problem.
[ 485.804046] WARNING: at net/mac80211/main.c:310 ieee80211_restart_hw+0x28/0x62()
[ 485.804049] Hardware name: Latitude E6400
[ 485.804052] ieee80211_restart_hw called with hardware scan in progress
[ 485.804054] Modules linked in: iwlagn iwlcore bnep sco rfcomm l2cap crc16 bluetooth [last unloaded: iwlcore]
[ 485.804069] Pid: 812, comm: kworker/u:3 Tainted: G W 2.6.36-rc3-wl+ #74
[ 485.804072] Call Trace:
[ 485.804079] [<c103019a>] warn_slowpath_common+0x60/0x75
[ 485.804084] [<c1030213>] warn_slowpath_fmt+0x26/0x2a
[ 485.804089] [<c145da67>] ieee80211_restart_hw+0x28/0x62
[ 485.804102] [<f8b35dc6>] iwl_bg_restart+0x113/0x150 [iwlagn]
[ 485.804108] [<c10415d5>] process_one_work+0x181/0x25c
[ 485.804119] [<f8b35cb3>] ? iwl_bg_restart+0x0/0x150 [iwlagn]
[ 485.804124] [<c104190a>] worker_thread+0xf9/0x1f2
[ 485.804128] [<c1041811>] ? worker_thread+0x0/0x1f2
[ 485.804133] [<c10451b0>] kthread+0x64/0x69
[ 485.804137] [<c104514c>] ? kthread+0x0/0x69
[ 485.804141] [<c1002df6>] kernel_thread_helper+0x6/0x10
[ 485.804145] ---[ end trace 3d4ebdc02d524bbb ]---
[ 485.804148] WG> 1
[ 485.804153] Pid: 812, comm: kworker/u:3 Tainted: G W 2.6.36-rc3-wl+ #74
[ 485.804156] Call Trace:
[ 485.804161] [<c145da9b>] ? ieee80211_restart_hw+0x5c/0x62
[ 485.804172] [<f8b35dcb>] iwl_bg_restart+0x118/0x150 [iwlagn]
[ 485.804177] [<c10415d5>] process_one_work+0x181/0x25c
[ 485.804188] [<f8b35cb3>] ? iwl_bg_restart+0x0/0x150 [iwlagn]
[ 485.804192] [<c104190a>] worker_thread+0xf9/0x1f2
[ 485.804197] [<c1041811>] ? worker_thread+0x0/0x1f2
[ 485.804201] [<c10451b0>] kthread+0x64/0x69
[ 485.804205] [<c104514c>] ? kthread+0x0/0x69
[ 485.804209] [<c1002df6>] kernel_thread_helper+0x6/0x10
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
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The 5 GHz CTL indexes were not being read for all hardware
devices due to the masking out through the CTL_MODE_M mask
being one bit too short. Without this the calibrated regulatory
maximum values were not being picked up when devices operate
on 5 GHz in HT40 mode. The final output power used for Atheros
devices is the minimum between the calibrated CTL values and
what CRDA provides.
Cc: stable@kernel.org [2.6.27+]
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The EEPROM is compressed on AR9003, upon decompression
the wrong upper limit was being used for the block which
prevented the 5 GHz CTL indexes from being used, which are
stored towards the end of the EEPROM block. This fix allows
the actual intended regulatory limits to be used on AR9003
hardware.
Cc: stable@kernel.org [2.6.36+]
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Otherwise lockdep complains...
https://bugzilla.kernel.org/show_bug.cgi?id=17311
[ INFO: possible circular locking dependency detected ]
2.6.36-rc2-git4 #12
-------------------------------------------------------
kworker/0:3/3630 is trying to acquire lock:
(rtnl_mutex){+.+.+.}, at: [<ffffffff813396c7>] rtnl_lock+0x12/0x14
but task is already holding lock:
(rfkill_global_mutex){+.+.+.}, at: [<ffffffffa014b129>]
rfkill_switch_all+0x24/0x49 [rfkill]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (rfkill_global_mutex){+.+.+.}:
[<ffffffff81079ad7>] lock_acquire+0x120/0x15b
[<ffffffff813ae869>] __mutex_lock_common+0x54/0x52e
[<ffffffff813aede9>] mutex_lock_nested+0x34/0x39
[<ffffffffa014b4ab>] rfkill_register+0x2b/0x29c [rfkill]
[<ffffffffa0185ba0>] wiphy_register+0x1ae/0x270 [cfg80211]
[<ffffffffa0206f01>] ieee80211_register_hw+0x1b4/0x3cf [mac80211]
[<ffffffffa0292e98>] iwl_ucode_callback+0x9e9/0xae3 [iwlagn]
[<ffffffff812d3e9d>] request_firmware_work_func+0x54/0x6f
[<ffffffff81065d15>] kthread+0x8c/0x94
[<ffffffff8100ac24>] kernel_thread_helper+0x4/0x10
-> #1 (cfg80211_mutex){+.+.+.}:
[<ffffffff81079ad7>] lock_acquire+0x120/0x15b
[<ffffffff813ae869>] __mutex_lock_common+0x54/0x52e
[<ffffffff813aede9>] mutex_lock_nested+0x34/0x39
[<ffffffffa018605e>] cfg80211_get_dev_from_ifindex+0x1b/0x7c [cfg80211]
[<ffffffffa0189f36>] cfg80211_wext_giwscan+0x58/0x990 [cfg80211]
[<ffffffff8139a3ce>] ioctl_standard_iw_point+0x1a8/0x272
[<ffffffff8139a529>] ioctl_standard_call+0x91/0xa7
[<ffffffff8139a687>] T.723+0xbd/0x12c
[<ffffffff8139a727>] wext_handle_ioctl+0x31/0x6d
[<ffffffff8133014e>] dev_ioctl+0x63d/0x67a
[<ffffffff8131afd9>] sock_ioctl+0x48/0x21d
[<ffffffff81102abd>] do_vfs_ioctl+0x4ba/0x509
[<ffffffff81102b5d>] sys_ioctl+0x51/0x74
[<ffffffff81009e02>] system_call_fastpath+0x16/0x1b
-> #0 (rtnl_mutex){+.+.+.}:
[<ffffffff810796b0>] __lock_acquire+0xa93/0xd9a
[<ffffffff81079ad7>] lock_acquire+0x120/0x15b
[<ffffffff813ae869>] __mutex_lock_common+0x54/0x52e
[<ffffffff813aede9>] mutex_lock_nested+0x34/0x39
[<ffffffff813396c7>] rtnl_lock+0x12/0x14
[<ffffffffa0185cb5>] cfg80211_rfkill_set_block+0x1a/0x7b [cfg80211]
[<ffffffffa014aed0>] rfkill_set_block+0x80/0xd5 [rfkill]
[<ffffffffa014b07e>] __rfkill_switch_all+0x3f/0x6f [rfkill]
[<ffffffffa014b13d>] rfkill_switch_all+0x38/0x49 [rfkill]
[<ffffffffa014b821>] rfkill_op_handler+0x105/0x136 [rfkill]
[<ffffffff81060708>] process_one_work+0x248/0x403
[<ffffffff81062620>] worker_thread+0x139/0x214
[<ffffffff81065d15>] kthread+0x8c/0x94
[<ffffffff8100ac24>] kernel_thread_helper+0x4/0x10
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
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Wireless extensions have an unfortunate, undocumented
requirement which requires drivers to always fill
iwp->length when returning a successful status. When
a driver doesn't do this, it leads to a kernel heap
content leak when userspace offers a larger buffer
than would have been necessary.
Arguably, this is a driver bug, as it should, if it
returns 0, fill iwp->length, even if it separately
indicated that the buffer contents was not valid.
However, we can also at least avoid the memory content
leak if the driver doesn't do this by setting the iwp
length to max_tokens, which then reflects how big the
buffer is that the driver may fill, regardless of how
big the userspace buffer is.
To illustrate the point, this patch also fixes a
corresponding cfg80211 bug (since this requirement
isn't documented nor was ever pointed out by anyone
during code review, I don't trust all drivers nor
all cfg80211 handlers to implement it correctly).
Cc: stable@kernel.org [all the way back]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The new workqueue changes helped me find this bug
that's been lingering since the changes to the work
processing in mac80211 -- the work timer is never
deleted properly. Do that to avoid having it fire
after all data structures have been freed. It can't
be re-armed because all it will do, if running, is
schedule the work, but that gets flushed later and
won't have anything to do since all work items are
gone by now (by way of interface removal).
Cc: stable@kernel.org [2.6.34+]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Michael reported that p54* never really entered power
save mode, even tough it was enabled.
It turned out that upon a power save mode change the
firmware will set a special flag onto the last outgoing
frame tx status (which in this case is almost always the
designated PSM nullfunc frame). This flag confused the
driver; It erroneously reported transmission failures
to the stack, which then generated the next nullfunc.
and so on...
Cc: <stable@kernel.org>
Reported-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This avoids a NULL pointer dereference as reported here:
https://bugzilla.redhat.com/show_bug.cgi?id=625889
When the WARN condition is hit in ieee80211_get_tx_rate, it will return
NULL. So, we need to check the return value and avoid dereferencing it
in that case.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: stable@kernel.org
Acked-by: Bob Copeland <me@bobcopeland.com>
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The commit 886275ce41a9751117367fb387ed171049eb6148 (param: lock
if_sdio's lbs_helper_name and lbs_fw_name against sysfs changes)
introduced new fields into the if_sdio_card structure. It caused
missalignment of the if_sdio_card.buffer field and failure at driver
load time:
~# modprobe libertas_sdio
[ 62.315124] libertas_sdio: Libertas SDIO driver
[ 62.319976] libertas_sdio: Copyright Pierre Ossman
[ 63.020629] DMA misaligned error with device 48
[ 63.025207] mmci-omap-hs mmci-omap-hs.1: unexpected dma status 800
[ 66.005035] libertas: command 0x0003 timed out
[ 66.009826] libertas: Timeout submitting command 0x0003
[ 66.016296] libertas: PREP_CMD: command 0x0003 failed: -110
Adding explicit alignment attribute for the if_sdio_card.buffer field
fixes this problem.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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For 5000 series of devices, use long monitor timer to check
stuck tx queues.
This modification apply to all the 5000 series including 5300 and others.
Cc: stable@kernel.org [2.6.35]
Reported-by: drago01 <drago01@gmail.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Commit c96c31e499b70964cfc88744046c998bb710e4b8
"(drivers/net/wireless: Use wiphy_<level>)"
inadvertently changed some upper case words to
lower case. Restore the original case.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Applying the filter flags directly as done since
commit 3474ad635db371b0d8d0ee40086f15d223d5b6a4
Author: Johannes Berg <johannes.berg@intel.com>
Date: Thu Apr 29 04:43:05 2010 -0700
iwlwifi: apply filter flags directly
broke 3945 under some unknown circumstances, as
reported by Alex.
Since I want to keep the direct application of
filter flags on iwlagn, duplicate the code into
both 3945 and agn and remove committing the
RXON that broke things from the 3945 version.
Cc: stable@kernel.org [2.6.35]
Reported-by: Alex Romosan <romosan@sycorax.lbl.gov>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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These are allocated with pci_alloc_consistent, so calling
pci_dma_sync_single_for_cpu is incorrect usage of the API. Remove this
misuse and consequently avoid the following backtrace:
WARNING: at lib/dma-debug.c:902 check_sync+0xce/0x43a()
Hardware name: 2373HU6
ipw2100 0000:02:02.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x0000000034e88008] [size=8 bytes]
Modules linked in: microcode ipw2100(+) snd_seq_device ppdev libipw nsc_ircc snd_pcm lib80211 video output irda parport_pc cfg80211 parport thinkpad_acpi e1000 iTCO_wdt crc_ccitt snd_timer iTCO_vendor_support snd i2c_i801 pcspkr rfkill soundcore joydev snd_page_alloc yenta_socket radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Pid: 0, comm: swapper Tainted: G W 2.6.35-wl+ #8
Call Trace:
[<c043aa42>] warn_slowpath_common+0x6a/0x7f
[<c05d252a>] ? check_sync+0xce/0x43a
[<c043aaca>] warn_slowpath_fmt+0x2b/0x2f
[<c05d252a>] check_sync+0xce/0x43a
[<c046189a>] ? print_lock_contention_bug+0x11/0xb2
[<c05d2b6f>] debug_dma_sync_single_for_cpu+0x47/0x49
[<c06cbd3c>] ? ehci_irq+0x31/0x331
[<f82a224a>] ? ipw2100_irq_tasklet+0x24/0x5e9 [ipw2100]
[<f82a224a>] ? ipw2100_irq_tasklet+0x24/0x5e9 [ipw2100]
[<f82a221d>] pci_dma_sync_single_for_cpu.clone.1+0x42/0x4b [ipw2100]
[<f82a23a2>] ipw2100_irq_tasklet+0x17c/0x5e9 [ipw2100]
[<c043fd87>] tasklet_action+0x78/0xcb
[<c0440293>] __do_softirq+0xc4/0x183
[<c044038d>] do_softirq+0x3b/0x5f
[<c04404d0>] irq_exit+0x3a/0x6d
[<c0404423>] do_IRQ+0x8b/0x9f
[<c04038b5>] common_interrupt+0x35/0x3c
[<c062ecfa>] ? acpi_idle_enter_simple+0xfe/0x13c
[<c045007b>] ? exit_itimers+0x2d/0x73
[<c062ecfc>] ? acpi_idle_enter_simple+0x100/0x13c
[<c070bf10>] cpuidle_idle_call+0x78/0xdc
[<c040251c>] cpu_idle+0x9b/0xb7
[<c07b1dd2>] rest_init+0xa6/0xab
[<c0a4b96d>] start_kernel+0x389/0x38e
[<c0a4b0c9>] i386_start_kernel+0xc9/0xd0
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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For 5000 and 6000g2b series of devices, use long monitor timer to check
stuck tx queues.
.6000g2b series device, it is WiFi/BT combo device, there are some cases,
tx queues are not move for a period of time because the WiFi/BT coex.
.5000 series device, it is being reported firmware got reload more
often than necessary, so extend the timer to avoid un-necessary reload.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
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Change the name for monitor timer, also adding define for long monitor
timer; long monitor timer can be used for the type of devices require longer
time to determine the uCode is stuck on tx and needed reload.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
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Atheros PCIe wireless cards handled by ath5k do require L0s disabled.
For distributions shipping with CONFIG_PCIEASPM (this will be enabled
by default in the future in 2.6.36) this will also mean both L1 and L0s
will be disabled when a pre 1.1 PCIe device is detected. We do know L1
works correctly even for all ath5k pre 1.1 PCIe devices though but cannot
currently undue the effect of a blacklist, for details you can read
pcie_aspm_sanity_check() and see how it adjusts the device link
capability.
It may be possible in the future to implement some PCI API to allow
drivers to override blacklists for pre 1.1 PCIe but for now it is
best to accept that both L0s and L1 will be disabled completely for
distributions shipping with CONFIG_PCIEASPM rather than having this
issue present. Motivation for adding this new API will be to help
with power consumption for some of these devices.
Example of issues you'd see:
- On the Acer Aspire One (AOA150, Atheros Communications Inc. AR5001
Wireless Network Adapter [168c:001c] (rev 01)) doesn't work well
with ASPM enabled, the card will eventually stall on heavy traffic
with often 'unsupported jumbo' warnings appearing. Disabling
ASPM L0s in ath5k fixes these problems.
- On the same card you would see a storm of RXORN interrupts
even though medium is idle.
Credit for root causing and fixing the bug goes to Jussi Kivilinna.
Cc: David Quan <David.Quan@atheros.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch handles the firmware loading properly
for device ID 7015.
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Use appropriate command (CMD_TRIGGER_SCAN_TO) instead of scan command
(CMD_SCAN) to configure trigger scan timeout.
This was broken in commit 3a98c30f3e8bb1f32b5bcb74a39647b3670de275.
This fix address the bug reported here:
https://bugzilla.kernel.org/show_bug.cgi?id=16554
Cc: stable@kernel.org
Signed-off-by: Yuri Ershov <ext-yuri.ershov@nokia.com>
Signed-off-by: Yuri Kululin <ext-yuri.kululin@nokia.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Some APs advertise that they may be HT40 capable in the capabilites
but the current operating channel configuration may be only HT20.
This causes disconnection as ath9k_htc sets WLAN_RC_40_FLAG despite
the AP operating in HT20 mode.
Hence set this flag only if the current channel configuration
is HT40 enabled.
Cc: stable@kernel.org
Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This should fix the oops which occurs during the packet injection
on monitor interface.
EIP is at ath9k_htc_tx_start+0x69/0x220 [ath9k_htc]
[<f84dc8ea>] ? invoke_tx_handlers+0xa5a/0xee0 [mac80211]
[<f82c84f4>] ? ath9k_htc_tx+0x44/0xe0 [ath9k_htc]
[<f84db7b8>] ? __ieee80211_tx+0xf8/0x190 [mac80211]
[<f84dce0d>] ? ieee80211_tx+0x9d/0x1a0 [mac80211]
[<f84dcfac>] ? ieee80211_xmit+0x9c/0x1c0 [mac80211]
[<f84dd1b5>] ? ieee80211_monitor_start_xmit+0x85/0xb0 [mac80211]
[<c04c30cd>] ? dev_hard_start_xmit+0x1ad/0x210
[<c04b97c2>] ? __alloc_skb+0x52/0x130
[<c04d7cd5>] ? sch_direct_xmit+0x105/0x170
[<c04c5e9f>] ? dev_queue_xmit+0x37f/0x4b0
[<c0567e1e>] ? packet_snd+0x21e/0x250
[<c05684a2>] ? packet_sendmsg+0x32/0x40
[<c04b4c63>] ? sock_aio_write+0x113/0x130
[<c0207934>] ? do_sync_write+0xc4/0x100
[<c0167740>] ? autoremove_wake_function+0x0/0x50
[<c02f4414>] ? security_file_permission+0x14/0x20
[<c0207ad4>] ? rw_verify_area+0x64/0xe0
[<c01e6458>] ? handle_mm_fault+0x338/0x390
[<c0207cd5>] ? vfs_write+0x185/0x1a0
[<c058db20>] ? do_page_fault+0x160/0x3a0
[<c0208512>] ? sys_write+0x42/0x70
[<c01033ec>] ? syscall_call+0x7/0xb
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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It is necessary to call pm_qos_add_request prior to calling
pm_qos_update_request. It was revealed that ipw2100 has been
doing this wrong since "pm_qos: Get rid of the allocation in
pm_qos_add_request()" (commit 82f682514a5df89ffb3890627eebf0897b7a84ec)
added a WARN that results in the following backtrace:
WARNING: at kernel/pm_qos_params.c:264 pm_qos_update_request+0x5e/0x70()
pm_qos_update_request() called for unknown object
Call Trace:
[<c1024088>] ? warn_slowpath_common+0x78/0xb0
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<c1024153>] ? warn_slowpath_fmt+0x33/0x40
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<f89fe15f>] ? ipw2100_up+0x3f/0xf10 [ipw2100]
[<c11961c9>] ? vsnprintf+0xc9/0x530
[<f89ff36c>] ? ipw2100_net_init+0x2c/0x1c0 [ipw2100]
[<c12f542d>] ? register_netdevice+0x7d/0x3c0
[<f89f9b00>] ? ipw2100_irq_tasklet+0x910/0x9a0 [ipw2100]
[<c12f579f>] ? register_netdev+0x2f/0x40
[<f89fd471>] ? ipw2100_pci_init_one+0xd21/0x1060 [ipw2100]
[<c11a5ebb>] ? local_pci_probe+0xb/0x10
[<c11a6d49>] ? pci_device_probe+0x69/0x90
[<c1224704>] ? driver_probe_device+0x74/0x180
[<c10dd15a>] ? sysfs_create_dir+0x6a/0xb0
[<c1224889>] ? __driver_attach+0x79/0x80
[<c1224810>] ? __driver_attach+0x0/0x80
[<c1223fa2>] ? bus_for_each_dev+0x52/0x80
[<c1224586>] ? driver_attach+0x16/0x20
[<c1224810>] ? __driver_attach+0x0/0x80
[<c122395f>] ? bus_add_driver+0x17f/0x250
[<c11a5ec0>] ? pci_device_shutdown+0x0/0x20
[<c11a6c80>] ? pci_device_remove+0x0/0x40
[<c1224b13>] ? driver_register+0x63/0x120
[<c11a6f96>] ? __pci_register_driver+0x36/0xa0
[<f84f9048>] ? ipw2100_init+0x48/0x67 [ipw2100]
[<c1001122>] ? do_one_initcall+0x32/0x170
[<c1087078>] ? __vunmap+0xb8/0xf0
[<f84f9000>] ? ipw2100_init+0x0/0x67 [ipw2100]
[<c10510c1>] ? sys_init_module+0x161/0x1000
[<c108f847>] ? sys_close+0x67/0xe0
[<c13647c1>] ? syscall_call+0x7/0xb
This patch moves pm_qos_add_request prior to pci_register_driver in
ipw2100 in order to avoid this problem.
Reported-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6
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The previous value of 672 for L2CAP_DEFAULT_MAX_PDU_SIZE is based on
the default L2CAP MTU. That default MTU is calculated from the size
of two DH5 packets, minus ACL and L2CAP b-frame header overhead.
ERTM is used with newer basebands that typically support larger 3-DH5
packets, and i-frames and s-frames have more header overhead. With
clean RF conditions, basebands will typically attempt to use 1021-byte
3-DH5 packets for maximum throughput. Adjusting for 2 bytes of ACL
headers plus 10 bytes of worst-case L2CAP headers yields 1009 bytes
of payload.
This PDU size imposes less overhead for header bytes and gives the
baseband the option to choose 3-DH5 packets, but is small enough for
ERTM traffic to interleave well with other L2CAP or SCO data.
672-byte payloads do not allow the most efficient over-the-air
packet choice, and cannot achieve maximum throughput over BR/EDR.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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remote_tx_win is intended to be set on receipt of an L2CAP
configuration request. The value is used to determine the size of the
transmit window on the remote side of an ERTM connection, so L2CAP
can stop sending frames when that remote window is full.
An incorrect remote_tx_win value will cause the stack to not fully
utilize the tx window (performance impact), or to overfill the remote
tx window (causing dropped frames or a disconnect).
This patch removes an extra setting of remote_tx_win when a
configuration response is received. The transmit window has a
different meaning in a response - it is an informational value
less than or equal to the local tx_win.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The L2CAP specification requires that the ERTM retransmit timeout be at
least 2 seconds for BR/EDR connections.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Incoming configuration values must be converted to native CPU order
before use. This fixes a bug where a little-endian MPS value is
compared to a native CPU value. On big-endian processors, this
can cause ERTM and streaming mode segmentation to produce PDUs
that are larger than the remote stack is expecting, or that would
produce fragmented skbs that the current FCS code cannot handle.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Currently the driver will try to protect all frames,
which leads to a lot of odd things like sending an
RTS with a zeroed RA before multicast frames, which
is clearly bogus.
In order to fix all of this, we need to take a step
back and see what we need to achieve:
* we need RTS/CTS protection if requested by
the AP for the BSS, mac80211 tells us this
* in that case, CTS-to-self should only be
enabled when mac80211 tells us
* additionally, as a hardware workaround, on
some devices we have to protect aggregated
frames with RTS
To achieve the first two items, set up the RXON
accordingly and set the protection required flag
in the transmit command when mac80211 requests
protection for the frame.
To achieve the last item, set the rate-control
RTS-requested flag for all stations that we have
aggregation sessions with, and set the protection
required flag when sending aggregated frames (on
those devices where this is required).
Since otherwise bugs can occur, do not allow the
user to override the RTS-for-aggregation setting
from sysfs any more.
Finally, also clean up the way all these flags get
set in the driver and move everything into the
device-specific functions.
Cc: stable@kernel.org [2.6.35]
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>
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Accesses to "wdev->current_bss" must be
locked with the wdev lock, which action
frame transmission is missing.
Cc: stable@kernel.org [2.6.33+]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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CC [M] drivers/net/wireless/libertas/cfg.o
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c: In function ‘lbs_scan_worker’:
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: ‘TASK_NORMAL’ undeclared (first use in this function)
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: (Each undeclared identifier is reported only once
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:722: error: for each function it appears in.)
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c: In function ‘lbs_cfg_connect’:
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function ‘signal_pending’
/home/greearb/git/wireless-testing/drivers/net/wireless/libertas/cfg.c:1267: error: implicit declaration of function ‘schedule_timeout’
Reported-by: Ben Greear <greearb@candelatech.com>
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This reverts commit 5f7aebd845a9d2ed42f36b7333579ec3534b4713.
Apparently, that PCI ID data was incorrectly taken from the subsystem
information. The actual ID matches another already known ID.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Adds documentation for the igbvf (igb virtual function driver).
v2:
- Removed trailing white space
- Removed Ethtool version info
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add documentation for the igb networking driver.
v2:
- Removed trailing white space
- Removed Ethtool version info
- Removed LRO kernel version info
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Based on patches from Sonny Rao and Milton Miller...
Combined the patches to fix up clean_tx_irq and clean_rx_irq.
The PowerPC architecture does not require loads to independent bytes
to be ordered without adding an explicit barrier.
In ixgbe_clean_rx_irq we load the status bit then load the packet data.
With packet split disabled if these loads go out of order we get a
stale packet, but we will notice the bad sequence numbers and drop it.
The problem occurs with packet split enabled where the TCP/IP header
and data are in different descriptors. If the reads go out of order
we may have data that doesn't match the TCP/IP header. Since we use
hardware checksumming this bad data is never verified and it makes it
all the way to the application.
This bug was found during stress testing and adding this barrier has
been shown to fix it. The bug can manifest as a data integrity issue
(bad payload data) or as a BUG in skb_pull().
This was a nasty bug to hunt down, if people agree with the fix I think
it's a candidate for stable.
Previously Submitted to e1000-devel only for ixgbe
http://marc.info/?l=e1000-devel&m=126593062701537&w=3
We've now seen this problem hit with other device drivers (e1000e mostly)
So I'm resubmitting with fixes for other Intel Device Drivers with
similar issues.
CC: Milton Miller <miltonm@bga.com>
CC: Anton Blanchard <anton@samba.org>
CC: Sonny Rao <sonnyrao@us.ibm.com>
CC: stable <stable@kernel.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Building ixgbe without DCB_CONFIG and FCOE_CONFIG will cause
a build error. This resolves the build error by wrapping
the fcoe.up in CONFIG_IXGBE_DCB ifdefs.
Also frames were being priority VLAN tagged even without DCB
enabled. This fixes this so that 8021Q priority tags are
only added with DCB actually enabled.
Reported-by: divya <dipraksh@linux.vnet.ibm.com>
Reported-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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I moved the kfree(cb) below the dereferences.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We should unlock here. This is the only place where we return from the
function with the lock held. The caller isn't expecting it.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We were seeing faults in the solos-pci receive tasklet when packets
arrived for a VCC which was currently being closed:
[18842.727906] EIP: [<e082f490>] br2684_push+0x19/0x234 [br2684] SS:ESP 0068:dfb89d14
[18845.090712] [<c13ecff3>] ? do_page_fault+0x0/0x2e1
[18845.120042] [<e082f490>] ? br2684_push+0x19/0x234 [br2684]
[18845.153530] [<e084fa13>] solos_bh+0x28b/0x7c8 [solos_pci]
[18845.186488] [<e084f711>] ? solos_irq+0x2d/0x51 [solos_pci]
[18845.219960] [<c100387b>] ? handle_irq+0x3b/0x48
[18845.247732] [<c10265cb>] ? irq_exit+0x34/0x57
[18845.274437] [<c1025720>] tasklet_action+0x42/0x69
[18845.303247] [<c102643f>] __do_softirq+0x8e/0x129
[18845.331540] [<c10264ff>] do_softirq+0x25/0x2a
[18845.358274] [<c102664c>] _local_bh_enable_ip+0x5e/0x6a
[18845.389677] [<c102666d>] local_bh_enable+0xb/0xe
[18845.417944] [<e08490a8>] ppp_unregister_channel+0x32/0xbb [ppp_generic]
[18845.458193] [<e08731ad>] pppox_unbind_sock+0x18/0x1f [pppox]
This patch uses an RCU-inspired approach to fix it. In the RX tasklet's
find_vcc() function we first refuse to use a VCC which already has the
ATM_VF_READY bit cleared. And in the VCC close function, we synchronise
with the tasklet to ensure that it can't still be using the VCC before
we continue and allow the VCC to be destroyed.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Tested-by: Nathan Williams <nathan@traverse.com.au>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since there was added ->tcf_chain() method without ->bind_tcf() to
sch_sfq class options, there is oops when a filter is added with
the classid parameter.
Fixes commit 7d2681a6ff4f9ab5e48d02550b4c6338f1638998
netdev thread: null pointer at cls_api.c
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Reported-by: Franchoze Eric <franchoze@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Although netif_rx() isn't expected to be called in process context with
preemption enabled, it'd better handle this case. And this is why get_cpu()
is used in the non-RPS #ifdef branch. If tree RCU is selected,
rcu_read_lock() won't disable preemption, so preempt_disable() should be
called explictly.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tcp_parse_md5sig_option doesn't check md5sig option (TCPOPT_MD5SIG)
length, but tcp_v[46]_inbound_md5_hash assume that it's at least 16
bytes long.
Signed-off-by: Dmitry Popov <dp@highloadlab.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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spin_is_locked() can return zero on some (UP?)
configurations because locks don't exist, and
that causes an endless amount of warnings. Use
lockdep_assert_held() instead, which has two
advantages:
1) it verifies the current task is holding
the lock or mutex
2) it compiles away completely when lockdep
is not enabled
Cc: stable@kernel.org [2.6.34+, maybe only parts of patch]
Reported-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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