Commit Graph

29128 Commits

Author SHA1 Message Date
Niklas Cassel
3f04950f32 ath10k: transmit queued frames after processing rx packets
When running iperf on ath10k SDIO, TX can stop working:

iperf -c 192.168.1.1 -i 1 -t 20 -w 10K
[  3]  0.0- 1.0 sec  2.00 MBytes  16.8 Mbits/sec
[  3]  1.0- 2.0 sec  3.12 MBytes  26.2 Mbits/sec
[  3]  2.0- 3.0 sec  3.25 MBytes  27.3 Mbits/sec
[  3]  3.0- 4.0 sec   655 KBytes  5.36 Mbits/sec
[  3]  4.0- 5.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  5.0- 6.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  6.0- 7.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  7.0- 8.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  8.0- 9.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  9.0-10.0 sec  0.00 Bytes  0.00 bits/sec
[  3]  0.0-10.3 sec  9.01 MBytes  7.32 Mbits/sec

There are frames in the ieee80211_txq and there are frames that have
been removed from from this queue, but haven't yet been sent on the wire
(num_pending_tx).

When num_pending_tx reaches max_num_pending_tx, we will stop the queues
by calling ieee80211_stop_queues().

As frames that have previously been sent for transmission
(num_pending_tx) are completed, we will decrease num_pending_tx and wake
the queues by calling ieee80211_wake_queue(). ieee80211_wake_queue()
does not call wake_tx_queue, so we might still have frames in the
queue at this point.

While the queues were stopped, the socket buffer might have filled up,
and in order for user space to write more, we need to free the frames
in the queue, since they are accounted to the socket. In order to free
them, we first need to transmit them.

This problem cannot be reproduced on low-latency devices, e.g. pci,
since they call ath10k_mac_tx_push_pending() from
ath10k_htt_txrx_compl_task(). ath10k_htt_txrx_compl_task() is not called
on high-latency devices.
Fix the problem by calling ath10k_mac_tx_push_pending(), after
processing rx packets, just like for low-latency devices, also in the
SDIO case. Since we are calling ath10k_mac_tx_push_pending() directly,
we also need to export it.

Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-28 12:44:21 +03:00
Zhi Chen
98dc04ba60 ath10k: fix tlv 5ghz channel missing issue
The 5ghz channel parameters of TLV target wasn't passed to host, it caused
host can only use lower channels from 36 to 64.

Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-28 12:37:59 +03:00
Zhi Chen
c829198880 ath10k: fix scan crash due to incorrect length calculation
Length of WMI scan message was not calculated correctly. The allocated
buffer was smaller than what we expected. So WMI message corrupted
skb_info, which is at the end of skb->data. This fix takes TLV header
into account even if the element is zero-length.

Crash log:
  [49.629986] Unhandled kernel unaligned access[#1]:
  [49.634932] CPU: 0 PID: 1176 Comm: logd Not tainted 4.4.60 #180
  [49.641040] task: 83051460 ti: 8329c000 task.ti: 8329c000
  [49.646608] $ 0   : 00000000 00000001 80984a80 00000000
  [49.652038] $ 4   : 45259e89 8046d484 8046df30 8024ba70
  [49.657468] $ 8   : 00000000 804cc4c0 00000001 20306320
  [49.662898] $12   : 33322037 000110f2 00000000 31203930
  [49.668327] $16   : 82792b40 80984a80 00000001 804207fc
  [49.673757] $20   : 00000000 0000012c 00000040 80470000
  [49.679186] $24   : 00000000 8024af7c
  [49.684617] $28   : 8329c000 8329db88 00000001 802c58d0
  [49.690046] Hi    : 00000000
  [49.693022] Lo    : 453c0000
  [49.696013] epc   : 800efae4 put_page+0x0/0x58
  [49.700615] ra    : 802c58d0 skb_release_data+0x148/0x1d4
  [49.706184] Status: 1000fc03 KERNEL EXL IE
  [49.710531] Cause : 00800010 (ExcCode 04)
  [49.714669] BadVA : 45259e89
  [49.717644] PrId  : 00019374 (MIPS 24Kc)

Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-28 12:33:32 +03:00
Geert Uytterhoeven
371d5e9d99 wcn36xx: Remove Unicode Byte Order Mark from testcode
Older gcc (< 4.4) doesn't like files starting with a Unicode BOM:

    drivers/net/wireless/ath/wcn36xx/testmode.c:1: error: stray ‘\357’ in program
    drivers/net/wireless/ath/wcn36xx/testmode.c:1: error: stray ‘\273’ in program
    drivers/net/wireless/ath/wcn36xx/testmode.c:1: error: stray ‘\277’ in program

Remove the BOM, the rest of the file is plain ASCII anyway.

Output of "file drivers/net/wireless/ath/wcn36xx/testmode.c" before:

    drivers/net/wireless/ath/wcn36xx/testmode.c: C source, UTF-8 Unicode (with BOM) text

and after:

    drivers/net/wireless/ath/wcn36xx/testmode.c: C source, ASCII text

Fixes: 87f825e6e2 ("wcn36xx: Add support for Factory Test Mode (FTM)")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Ramon Fried <ramon.fried@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-28 12:28:35 +03:00
Ryan Hsu
9191fc2a43 ath10k: update the phymode along with bandwidth change request
In the case of Station connects to AP with narrower bandwidth at beginning.
And later the AP changes the bandwidth to winder bandwidth, the AP will
beacon with wider bandwidth IE, eg VHT20->VHT40->VHT80 or VHT40->VHT80.

Since the supported BANDWIDTH will be limited by the PHYMODE, so while
Station receives the bandwidth change request, it will also need to
reconfigure the PHYMODE setting to firmware instead of just configuring
the BANDWIDTH info, otherwise it'll trigger a firmware crash with
non-support bandwidth.

The issue was observed in WLAN.RM.4.4.1-00051-QCARMSWP-1, QCA6174 with
below scenario:

AP xxx changed bandwidth, new config is 5200 MHz, width 2 (5190/0 MHz)
disconnect from AP xxx for new auth to yyy
RX ReassocResp from xxx (capab=0x1111 status=0 aid=102)
associated

....

AP xxx changed bandwidth, new config is 5200 MHz, width 2 (5190/0 MHz)
AP xxx changed bandwidth, new config is 5200 MHz, width 3 (5210/0 MHz)

....

firmware register dump:
[00]: 0x05030000 0x000015B3 0x00987291 0x00955B31
[04]: 0x00987291 0x00060730 0x00000004 0x00000001
[08]: 0x004089F0 0x00955A00 0x000A0B00 0x00400000
[12]: 0x00000009 0x00000000 0x00952CD0 0x00952CE6
[16]: 0x00952CC4 0x0098E25F 0x00000000 0x0091080D
[20]: 0x40987291 0x0040E7A8 0x00000000 0x0041EE3C
[24]: 0x809ABF05 0x0040E808 0x00000000 0xC0987291
[28]: 0x809A650C 0x0040E948 0x0041FE40 0x004345C4
[32]: 0x809A5C63 0x0040E988 0x0040E9AC 0x0042D1A8
[36]: 0x8091D252 0x0040E9A8 0x00000002 0x00000001
[40]: 0x809FDA9D 0x0040EA58 0x0043D554 0x0042D554
[44]: 0x809F8B22 0x0040EA78 0x0043D554 0x00000001
[48]: 0x80911210 0x0040EAC8 0x00000010 0x004041D0
[52]: 0x80911154 0x0040EB28 0x00400000 0x00000000
[56]: 0x8091122D 0x0040EB48 0x00000000 0x00400600

Reported-by: Rouven Czerwinski <rouven@czerwinskis.de>
Tested-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Ryan Hsu <ryanhsu@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-28 12:27:05 +03:00
Felix Fietkau
c3ae2103e0 mt76: improve gain adjustment in noisy environments
When switching between low gain (high RSSI) and high gain settings, it
can take a few seconds to adjust to the current environment.
This can lead to short periods of time with extreme packet loss.

When switching from low_gain=1 to low_gain=2, start with the same gain
adjustment value instead of the lowest to avoid spikes of huge numbers
of false CCA events

Also avoid resetting adjustment values on switching between low_gain
values 0 and 1, since it affects only the upper limit of vga adjustment

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:15:14 +03:00
Felix Fietkau
32e49efe0f mt76: track ewma rssi for gain adjustment per station
This preserves more sensitivity when weak stations are active and avoids
counting signal measurements from other unrelated networks

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:15:10 +03:00
Felix Fietkau
108ec4dafd mt76: add a debugfs file to dump agc calibration information
Useful for debugging gain adjustment issues triggered by signal strength
changes.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:15:06 +03:00
Felix Fietkau
8e31f0d35a mt76: fix variable gain adjustment range
The range should only be limited to 4 for really weak signals, for all
other gain settings the range is 16.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:15:03 +03:00
Felix Fietkau
fa967b5860 mt76: clear false CCA counters after changing gain settings
They will be read on the next calibration step without gain change and
must not count earlier events

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:14:58 +03:00
Felix Fietkau
9292116871 mt76: adjust AGC control register 26 based on gain for VHT80
Use values based on the vendor driver

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:14:54 +03:00
Felix Fietkau
6cdb9614a8 mt76: fix swapped values for RXO-18 in gain control
The lowest bit should be set to 0 only for strong links, not for weak
ones.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:14:51 +03:00
Felix Fietkau
9afef0fdda mt76: fix threshold for gain adjustment
The gain should be reduced only for very strong connections, not for mid
range.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:14:48 +03:00
Felix Fietkau
aea3827292 mt76: fix beacon timer drift
The beacon timer drifts by 1 microsecond every TBTT. After 20 minutes
with a beacon interval of 100, the drift will be almost 12 ms, enough to
cause weird issues for devices in powersave mode.

Since the beacon timer is configured in units of 1/16 TU (64 us), we
need to adjust it once every 64 beacons and only for one beacon.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:14:46 +03:00
Sebastian Andrzej Siewior
81454b8405 zd1211rw: use irqsave() in USB's complete callback
The USB completion callback does not disable interrupts while acquiring
the lock. We want to remove the local_irq_disable() invocation from
__usb_hcd_giveback_urb() and therefore it is required for the callback
handler to disable the interrupts while acquiring the lock.
The callback may be invoked either in IRQ or BH context depending on the
USB host controller.
Use the _irqsave() variant of the locking primitives.

Cc: Daniel Drake <dsd@gentoo.org>
Cc: Ulrich Kunitz <kune@deine-taler.de>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:12:43 +03:00
Sebastian Andrzej Siewior
a3128feef6 libertas: use irqsave() in USB's complete callback
The USB completion callback does not disable interrupts while acquiring
the lock. We want to remove the local_irq_disable() invocation from
__usb_hcd_giveback_urb() and therefore it is required for the callback
handler to disable the interrupts while acquiring the lock.
The callback may be invoked either in IRQ or BH context depending on the
USB host controller.
Use the _irqsave() variant of the locking primitives.

I am removing the
	BUG_ON(!in_interrupt());

check because it serves no purpose. Running the completion callback in
BH context makes in_interrupt() still return true but the interrupts
could be enabled. The important part is that ->driver_lock is acquired
with disabled interrupts which is the case now.

Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:12:39 +03:00
Sebastian Andrzej Siewior
fc75122fab libertas_tf: use irqsave() in USB's complete callback
The USB completion callback does not disable interrupts while acquiring
the lock. We want to remove the local_irq_disable() invocation from
__usb_hcd_giveback_urb() and therefore it is required for the callback
handler to disable the interrupts while acquiring the lock.
The callback may be invoked either in IRQ or BH context depending on the
USB host controller.
Use the _irqsave() variant of the locking primitives.

I am removing the
	BUG_ON(!in_interrupt());

check because it serves no purpose. Running the completion callback in
BH context makes in_interrupt() still return true but the interrupts
could be enabled. The important part is that ->driver_lock is acquired
with disabled interrupts which is the case now.

Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:12:39 +03:00
Arnd Bergmann
3cade2f3d9 ipw2x00: track time using boottime
The ipw2x00 driver family uses get_seconds() to read the current time
for various purposes. This function is deprecated because of the 32-bit
time_t overflow, and it can cause unexpected behavior when the time
changes due to settimeofday() calls or leap second updates.

In many cases, we want to use monotonic time instead, however ipw2x00
explicitly tracks the time spent in suspend, so this changes the
driver over to use ktime_get_boottime_seconds(), which is slightly
slower, but not used in a fastpath here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:10:25 +03:00
Arnd Bergmann
71e140b571 zd1211rw: stop using deprecated get_seconds()
The get_seconds() function is deprecated because of the y2038 overflow.
In zd1211rw we don't even care about the absolute value, so this is
not a problem, but it's equally trivial to change to the non-deprecated
ktime_get_seconds().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:10:21 +03:00
Omer Efrat
22d0d2fafc wireless-drivers: use BIT_ULL for NL80211_STA_INFO_ attribute types
The BIT macro uses unsigned long which some architectures handle as 32 bit
and therefore might cause macro's shift to overflow when used on a value
equals or larger than 32 (NL80211_STA_INFO_RX_DURATION and afterwards).

Since 'filled' member in station_info changed to u64, BIT_ULL macro
should be used with all NL80211_STA_INFO_* attribute types instead of BIT
to prevent future possible bugs when one will use BIT macro for higher
attributes by mistake.

This commit cleans up all usages of BIT macro with the above field
in wireless-drivers by changing it to BIT_ULL instead. In addition, there are
some places which don't use BIT nor BIT_ULL macros so align those as well.

Signed-off-by: Omer Efrat <omer.efrat@tandemg.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:07:39 +03:00
Dan Carpenter
ae636fb155 rndis_wlan: potential buffer overflow in rndis_wlan_auth_indication()
This is a static checker fix, not something I have tested.  The issue
is that on the second iteration through the loop, we jump forward by
le32_to_cpu(auth_req->length) bytes.  The problem is that if the length
is more than "buflen" then we end up with a negative "buflen".  A
negative buflen is type promoted to a high positive value and the loop
continues but it's accessing beyond the end of the buffer.

I believe the "auth_req->length" comes from the firmware and if the
firmware is malicious or buggy, you're already toasted so the impact of
this bug is probably not very severe.

Fixes: 030645aceb ("rndis_wlan: handle 802.11 indications from device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:06:42 +03:00
YueHaibing
8668f9a57c atmel: use memdup_user to simplify the code
use existing memdup_user() helper function instead of open-coding

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:06:00 +03:00
Lorenzo Bianconi
2d1e9be001 mt76x2: fix mrr idx/count estimation in mt76x2_mac_fill_tx_status()
Fix mcs and attempt count estimation in mt76x2_mac_fill_tx_status routine
if the number of tx retries reported by the hw is grater than
IEEE80211_TX_MAX_RATES

Fixes: 7bc04215a6 ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:05:15 +03:00
Varsha Rao
4e5f881d43 net: ipw2x00: Replace NULL comparison with !priv
Remove extra parentheses and replace NULL comparison with !priv, to fix
clang warning of extraneous parentheses and check patch issue. Following
coccinelle script is used to fix it.

@disable is_null,paren@
expression e;
statement s;
@@
if (
- (e==NULL)
+!e
 )
s

Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:04:41 +03:00
Xinming Hu
38013eef02 mwifiex: uap: do not chok ethernet header in bridge path
Do not chock ethernet header for uap bridge data path,
as it is still needed to send skb to dest station.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 19:03:58 +03:00
Colin Ian King
ab8d904654 brcmsmac: make function wlc_phy_workarounds_nphy_rev1 static
The function wlc_phy_workarounds_nphy_rev1 is local to the source and
does not need to be in global scope, so make it static.

Cleans up sparse warning:
symbol 'wlc_phy_workarounds_nphy_rev1' was not declared. Should it
be static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:57:23 +03:00
Stefan Agner
c9a61469fc brcmsmac: fix wrap around in conversion from constant to s16
The last value in the log_table wraps around to a negative value
since s16 has a value range of -32768 to 32767. This is not what
the table intends to represent. Use the closest positive value
32767.

This fixes a warning seen with clang:
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath.c:216:2: warning:
      implicit conversion from 'int' to 's16' (aka 'short') changes
value from 32768
      to -32768 [-Wconstant-conversion]
        32768
        ^~~~~
1 warning generated.

Fixes: 4c0bfeaae9 ("brcmsmac: fix array out-of-bounds access in qm_log10")
Cc: Tobias Regnery <tobias.regnery@gmail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:56:33 +03:00
Varsha Rao
eb5d2f3afc brcmsmac: Remove unnecessary parentheses
This patch fixes the clang warning of extraneous parentheses, with the
following coccinelle script.

@@
identifier i;
expression e;
statement s;
@@
if (
-(i == e)
+i == e
 )
s

Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:55:11 +03:00
Andrey Shevchenko
6fbef9540a qtnfmac: enable source MAC address randomization support
Enable support for source MAC address randomization of probe request
frames. Pass addr/mask randomization parameters to firmware.

Signed-off-by: Andrey Shevchenko <ashevchenko@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:54:16 +03:00
Igor Mitsyanko
ed9f34bb9d qtnfmac: implement net_device_ops callback to set MAC address
Implement net_device_ops::ndo_set_mac_address callback to allow for
setting interface MAC address. Implementation is done through existing
CHANGE_INTF firmware command. All validation is to be done by firmware.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:54:15 +03:00
Tony Lindgren
9b71578de0 wlcore: Enable runtime PM autosuspend support
With runtime PM tested working for wlcore with no autosuspend, we can
now enable autosuspend to cut down on enable/disable for interrupts.
Basically we just replace pm_runtime_put() with the autosuspend variants.

Let's use autosuspend delay of 50ms that MMC drivers typically use.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:45:24 +03:00
Tony Lindgren
c40aad28a3 wlcore: Make sure firmware is initialized in wl1271_op_add_interface()
We have wl12xx_boot() call wl12xx_enable_interrupts() and if we have
wl1271_op_add_interface() call pm_runtime_get_sync() before the interrupts
are enabled. And then we get the following error during boot:

wlcore: ERROR ELP wakeup timeout!

Let's fix this by first checking if we need to boot the firmware. And
only after that call pm_runtime_get_sync() when interrupts are enabled.
And only after that do the check for wl12xx_need_fw_change().

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:45:22 +03:00
Eyal Reizer
45aa7f071b wlcore: Use generic runtime pm calls for wowlan elp configuration
With runtime PM enabled, we can now use calls to pm_runtime_force_suspend
and pm_runtime_force_resume for enabling elp during suspend when wowlan
is enabled and waking the chip from elp on resume.

Remove the custom API that was used to ensure that the command
that is used to allow ELP during suspend is completed before the system
suspend.

Signed-off-by: Eyal Reizer <eyalr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:45:17 +03:00
Tony Lindgren
db68052bdf wlcore: Fix timout errors after recovery
After enabling runtime PM, if we force hardware reset multiple times with:

# echo 1 > /sys/kernel/debug/ieee80211/phy0/wlcore/start_recovery

We will after few tries get the following error:

wlcore: ERROR timeout waiting for the hardware to complete initialization

And then wlcore is unable to reconnect until after the wlcore related modules
are reloaded.

Let's fix this by moving pm_runtime_put() earlier before we restart the hardware.
And let's use the sync version to make sure we're done before we restart.

Note that we still will get -EBUSY warning from wl12xx_sdio_set_power() but let's
fix that separately once we know exactly why we get the warning.

Reported-by: Eyal Reizer <eyalr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:45:12 +03:00
Tony Lindgren
3ebbabea42 wlcore: Fix misplaced PM call for scan_complete_work()
With runtime PM enabled, we now need to have wlcore enabled longer
until after we're done calling wlcore_cmd_regdomain_config_locked():

scan_complete_work()
 wlcore_cmd_regdomain_config_locked()
   wlcore_cmd_send_failsafe()
     wl12xx_sdio_raw_read()

Note that this is not needed before runtime PM support as the
custom PM code had it's own timer. We have not yet enabled runtime
PM autosuspend for wlcore and this is why this issue now shows up.

Let's fix the issues first before we enable runtime PM autosuspend.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:44:53 +03:00
Tony Lindgren
fa2648a34e wlcore: Add support for runtime PM
We can update wlcore to use PM runtime by adding functions for
wlcore_runtime_suspend() and wlcore_runtime_resume() and replacing
calls to wl1271_ps_elp_wakeup() and wl1271_ps_elp_sleep() with calls
to pm_runtime_get_sync() and pm_runtime_put().

Note that the new wlcore_runtime_suspend() and wlcore_runtime_resume()
functions are based on simplified versions of wl1271_ps_elp_sleep() and
wl1271_ps_elp_wakeup().

We don't want to use the old functions as we can now take advantage of
the runtime PM usage count. And we don't need the old elp_work at all.
And we can also remove WL1271_FLAG_ELP_REQUESTED that is no longer needed.

Pretty much the only place where we are not just converting the existing
functions is wl1271_op_suspend() where we add pm_runtime_put_noidle()
to keep the calls paired.

As the next step is to implement runtime PM autosuspend, let's not add
wrapper functions for the generic runtime PM calls. We would be getting
rid of any wrapper functions anyways.

After autoidle we should be able to start using Linux generic wakeirqs
for the padconf interrupt.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:44:47 +03:00
Tony Lindgren
02edf81362 wlcore: Make sure PM calls are paired
The call to wl1271_ps_elp_wakeup() in wl12xx_queue_recovery_work() is
unpaired. Let's remove it and add paired calls to wl1271_recovery_work()
instead in preparation for changing things to use runtime PM.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:44:42 +03:00
Tony Lindgren
4ec7cece87 wlcore: Add missing PM call for wlcore_cmd_wait_for_event_or_timeout()
Otherwise we can get:

WARNING: CPU: 0 PID: 55 at drivers/net/wireless/ti/wlcore/io.h:84

I've only seen this few times with the runtime PM patches enabled
so this one is probably not needed before that. This seems to
work currently based on the current PM implementation timer. Let's
apply this separately though in case others are hitting this issue.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-27 18:44:40 +03:00
David S. Miller
9ff3b40e41 Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-06-26 08:07:17 +09:00
Stanislaw Gruszka
92963318a2 mt7601u: remove warning when avg_rssi is zero
It turned out that we can run calibration without already received
frames with RSSI data. In such case just don't update AGC register
and don't print the warning.

Fixes: b305a6ab02 ("mt7601u: use EWMA to calculate avg_rssi")
Reported-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-24 20:01:38 +03:00
Ganapathi Bhat
f8c095f679 mwifiex: handle race during mwifiex_usb_disconnect
Race condition is observed during rmmod of mwifiex_usb:

1. The rmmod thread will call mwifiex_usb_disconnect(), download
   SHUTDOWN command and do wait_event_interruptible_timeout(),
   waiting for response.

2. The main thread will handle the response and will do a
   wake_up_interruptible(), unblocking rmmod thread.

3. On getting unblocked, rmmod thread  will make rx_cmd.urb = NULL in
   mwifiex_usb_free().

4. The main thread will try to resubmit rx_cmd.urb in
   mwifiex_usb_submit_rx_urb(), which is NULL.

To fix this, move mwifiex_usb_free() from mwifiex_usb_disconnect
to mwifiex_unregister_dev(). Function mwifiex_unregister_dev() is
called after flushing the command and RX work queues.

Suggested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-24 20:00:46 +03:00
Ganapathi Bhat
7e58e741c0 Revert "mwifiex: handle race during mwifiex_usb_disconnect"
This reverts commit b817047ae7.

We have a better fix for this issue, which will be sent on top
of this revert.

Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-24 19:59:34 +03:00
Michael Trimarchi
373c83a801 brcmfmac: stop watchdog before detach and free everything
Using built-in in kernel image without a firmware in filesystem
or in the kernel image can lead to a kernel NULL pointer deference.
Watchdog need to be stopped in brcmf_sdio_remove

The system is going down NOW!
[ 1348.110759] Unable to handle kernel NULL pointer dereference at virtual address 000002f8
Sent SIGTERM to all processes
[ 1348.121412] Mem abort info:
[ 1348.126962]   ESR = 0x96000004
[ 1348.130023]   Exception class = DABT (current EL), IL = 32 bits
[ 1348.135948]   SET = 0, FnV = 0
[ 1348.138997]   EA = 0, S1PTW = 0
[ 1348.142154] Data abort info:
[ 1348.145045]   ISV = 0, ISS = 0x00000004
[ 1348.148884]   CM = 0, WnR = 0
[ 1348.151861] user pgtable: 4k pages, 48-bit VAs, pgdp = (____ptrval____)
[ 1348.158475] [00000000000002f8] pgd=0000000000000000
[ 1348.163364] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[ 1348.168927] Modules linked in: ipv6
[ 1348.172421] CPU: 3 PID: 1421 Comm: brcmf_wdog/mmc0 Not tainted 4.17.0-rc5-next-20180517 #18
[ 1348.180757] Hardware name: Amarula A64-Relic (DT)
[ 1348.185455] pstate: 60000005 (nZCv daif -PAN -UAO)
[ 1348.190251] pc : brcmf_sdiod_freezer_count+0x0/0x20
[ 1348.195124] lr : brcmf_sdio_watchdog_thread+0x64/0x290
[ 1348.200253] sp : ffff00000b85be30
[ 1348.203561] x29: ffff00000b85be30 x28: 0000000000000000
[ 1348.208868] x27: ffff00000b6cb918 x26: ffff80003b990638
[ 1348.214176] x25: ffff0000087b1a20 x24: ffff80003b94f800
[ 1348.219483] x23: ffff000008e620c8 x22: ffff000008f0b660
[ 1348.224790] x21: ffff000008c6a858 x20: 00000000fffffe00
[ 1348.230097] x19: ffff80003b94f800 x18: 0000000000000001
[ 1348.235404] x17: 0000ffffab2e8a74 x16: ffff0000080d7de8
[ 1348.240711] x15: 0000000000000000 x14: 0000000000000400
[ 1348.246018] x13: 0000000000000400 x12: 0000000000000001
[ 1348.251324] x11: 00000000000002c4 x10: 0000000000000a10
[ 1348.256631] x9 : ffff00000b85bc40 x8 : ffff80003be11870
[ 1348.261937] x7 : ffff80003dfc7308 x6 : 000000078ff08b55
[ 1348.267243] x5 : 00000139e1058400 x4 : 0000000000000000
[ 1348.272550] x3 : dead000000000100 x2 : 958f2788d6618100
[ 1348.277856] x1 : 00000000fffffe00 x0 : 0000000000000000

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Tested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-24 19:58:27 +03:00
Ping-Ke Shih
12dfa2f68a rtlwifi: Fix kernel Oops "Fw download fail!!"
When connecting to AP, mac80211 asks driver to enter and leave PS quickly,
but driver deinit doesn't wait for delayed work complete when entering PS,
then driver reinit procedure and delay work are running simultaneously.
This will cause unpredictable kernel oops or crash like

rtl8723be: error H2C cmd because of Fw download fail!!!
WARNING: CPU: 3 PID: 159 at drivers/net/wireless/realtek/rtlwifi/
	 rtl8723be/fw.c:227 rtl8723be_fill_h2c_cmd+0x182/0x510 [rtl8723be]
CPU: 3 PID: 159 Comm: kworker/3:2 Tainted: G       O     4.16.13-2-ARCH #1
Hardware name: ASUSTeK COMPUTER INC. X556UF/X556UF, BIOS X556UF.406
	       10/21/2016
Workqueue: rtl8723be_pci rtl_c2hcmd_wq_callback [rtlwifi]
RIP: 0010:rtl8723be_fill_h2c_cmd+0x182/0x510 [rtl8723be]
RSP: 0018:ffffa6ab01e1bd70 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffa26069071520 RCX: 0000000000000001
RDX: 0000000080000001 RSI: ffffffff8be70e9c RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000048 R09: 0000000000000348
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffffa26069071520 R14: 0000000000000000 R15: ffffa2607d205f70
FS:  0000000000000000(0000) GS:ffffa26081d80000(0000) knlGS:000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000443b39d3000 CR3: 000000037700a005 CR4: 00000000003606e0
Call Trace:
 ? halbtc_send_bt_mp_operation.constprop.17+0xd5/0xe0 [btcoexist]
 ? ex_btc8723b1ant_bt_info_notify+0x3b8/0x820 [btcoexist]
 ? rtl_c2hcmd_launcher+0xab/0x110 [rtlwifi]
 ? process_one_work+0x1d1/0x3b0
 ? worker_thread+0x2b/0x3d0
 ? process_one_work+0x3b0/0x3b0
 ? kthread+0x112/0x130
 ? kthread_create_on_node+0x60/0x60
 ? ret_from_fork+0x35/0x40
Code: 00 76 b4 e9 e2 fe ff ff 4c 89 ee 4c 89 e7 e8 56 22 86 ca e9 5e ...

This patch ensures all delayed works done before entering PS to satisfy
our expectation, so use cancel_delayed_work_sync() instead. An exception
is delayed work ips_nic_off_wq because running task may be itself, so add
a parameter ips_wq to deinit function to handle this case.

This issue is reported and fixed in below threads:
https://github.com/lwfinger/rtlwifi_new/issues/367
https://github.com/lwfinger/rtlwifi_new/issues/366

Tested-by: Evgeny Kapun <abacabadabacaba@gmail.com> # 8723DE
Tested-by: Shivam Kakkar <shivam543@gmail.com> # 8723BE on 4.18-rc1
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Fixes: cceb0a5973 ("rtlwifi: Add work queue for c2h cmd.")
Cc: Stable <stable@vger.kernel.org> # 4.11+
Reviewed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-24 19:54:21 +03:00
Joe Perches
6c1f0a1ffb net: drivers/net: Convert random_ether_addr to eth_random_addr
random_ether_addr is a #define for eth_random_addr which is
generally preferred in kernel code by ~3:1

Convert the uses of random_ether_addr to enable removing the #define

Miscellanea:

o Convert &vfmac[0] to equivalent vfmac and avoid unnecessary line wrap

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:49:14 +09:00
Geert Uytterhoeven
e020797b7d net: Remove depends on HAS_DMA in case of platform dependency
Remove dependencies on HAS_DMA where a Kconfig symbol depends on another
symbol that implies HAS_DMA, and, optionally, on "|| COMPILE_TEST".
In most cases this other symbol is an architecture or platform specific
symbol, or PCI.

Generic symbols and drivers without platform dependencies keep their
dependencies on HAS_DMA, to prevent compiling subsystems or drivers that
cannot work anyway.

This simplifies the dependencies, and allows to improve compile-testing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-23 10:44:30 +09:00
Johannes Berg
b8042b3da9 ieee80211: bump IEEE80211_MAX_AMPDU_BUF to support HE
Bump the IEEE80211_MAX_AMPDU_BUF size to 0x100 for HE support
and - for now - use IEEE80211_MAX_AMPDU_BUF_HT everywhere.

This is derived from my internal patch, parts of which Luca
had sent upstream.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-18 22:39:39 +02:00
Kalle Valo
4cf44d5255 Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
ath.git patches for 4.19. Major changes:

ath10k

* support channel 173

* fix spectral scan for QCA9984 and QCA9888 chipsets

ath6kl

* add support for Dell Wireless 1537
2018-06-18 16:48:15 +03:00
Gustavo A. R. Silva
c1e3f64f87 qtnfmac: fix NULL pointer dereference
In case *vif* is NULL at 655: if (!vif), the execution path jumps to
label out, where *vif* is dereferenced at 679:

if (vif->sta_state == QTNF_STA_CONNECTING)

Fix this by immediately returning when *vif* is NULL instead of
jumping to label out.

Addresses-Coverity-ID: 1469567 ("Dereference after null check")
Fixes: 480daa9cb6 ("qtnfmac: fix invalid STA state on EAPOL failure")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quanenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-06-18 11:55:15 +03:00
Linus Torvalds
9215310cf1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Various netfilter fixlets from Pablo and the netfilter team.

 2) Fix regression in IPVS caused by lack of PMTU exceptions on local
    routes in ipv6, from Julian Anastasov.

 3) Check pskb_trim_rcsum for failure in DSA, from Zhouyang Jia.

 4) Don't crash on poll in TLS, from Daniel Borkmann.

 5) Revert SO_REUSE{ADDR,PORT} change, it regresses various things
    including Avahi mDNS. From Bart Van Assche.

 6) Missing of_node_put in qcom/emac driver, from Yue Haibing.

 7) We lack checking of the TCP checking in one special case during SYN
    receive, from Frank van der Linden.

 8) Fix module init error paths of mac80211 hwsim, from Johannes Berg.

 9) Handle 802.1ad properly in stmmac driver, from Elad Nachman.

10) Must grab HW caps before doing quirk checks in stmmac driver, from
    Jose Abreu.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits)
  net: stmmac: Run HWIF Quirks after getting HW caps
  neighbour: skip NTF_EXT_LEARNED entries during forced gc
  net: cxgb3: add error handling for sysfs_create_group
  tls: fix waitall behavior in tls_sw_recvmsg
  tls: fix use-after-free in tls_push_record
  l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl()
  l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels
  mlxsw: spectrum_switchdev: Fix port_vlan refcounting
  mlxsw: spectrum_router: Align with new route replace logic
  mlxsw: spectrum_router: Allow appending to dev-only routes
  ipv6: Only emit append events for appended routes
  stmmac: added support for 802.1ad vlan stripping
  cfg80211: fix rcu in cfg80211_unregister_wdev
  mac80211: Move up init of TXQs
  mac80211_hwsim: fix module init error paths
  cfg80211: initialize sinfo in cfg80211_get_station
  nl80211: fix some kernel doc tag mistakes
  hv_netvsc: Fix the variable sizes in ipsecv2 and rsc offload
  rds: avoid unenecessary cong_update in loop transport
  l2tp: clean up stale tunnel or session in pppol2tp_connect's error path
  ...
2018-06-16 07:39:34 +09:00