linux-stable.git/drivers/net/wireless, branch v3.10.63

rt2x00: do not align payload on modern H/W

2014-12-06T23:05:49+00:00

commit cfd9167af14eb4ec21517a32911d460083ee3d59 upstream.

RT2800 and newer hardware require padding between header and payload if
header length is not multiple of 4.

For historical reasons we also align payload to to 4 bytes boundary, but
such alignment is not needed on modern H/W.

Patch fixes skb_under_panic problems reported from time to time:

https://bugzilla.kernel.org/show_bug.cgi?id=84911
https://bugzilla.kernel.org/show_bug.cgi?id=72471
http://marc.info/?l=linux-wireless&m=139108549530402&w=2
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1087591

Panic happened because we eat 4 bytes of skb headroom on each
(re)transmission when sending frame without the payload and the header
length not being multiple of 4 (i.e. QoS header has 26 bytes). On such
case because paylad_aling=2 is bigger than header_align=0 we increase
header_align by 4 bytes. To prevent that we could change the check to:

	if (payload_length && payload_align > header_align)
		header_align += 4;

but not aligning payload at all is more effective and alignment is not
really needed by H/W (that has been tested on OpenWrt project for few
years now).

Reported-and-tested-by: Antti S. Lankila 
Debugged-by: Antti S. Lankila 
Reported-by: Henrik Asp 
Originally-From: Helmut Schaa 
Signed-off-by: Stanislaw Gruszka 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: configure the LTR

2014-11-21T17:22:53+00:00

commit 9180ac50716a097a407c6d7e7e4589754a922260 upstream.

The LTR is the handshake between the device and the root
complex about the latency allowed when the bus exits power
save. This configuration was missing and this led to high
latency in the link power up. The end user could experience
high latency in the network because of this.

Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Greg Kroah-Hartman

wireless: rt2x00: add new rt2800usb device

2014-11-14T16:47:59+00:00

commit 664d6a792785cc677c2091038ce10322c8d04ae1 upstream.

0x1b75 0xa200 AirLive WN-200USB wireless 11b/g/n dongle

References: https://bugs.debian.org/766802
Reported-by: Martin Mokrejs 
Signed-off-by: Cyril Brulebois 
Acked-by: Stanislaw Gruszka 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

rt2800: correct BBP1_TX_POWER_CTRL mask

2014-10-30T16:35:12+00:00

commit 01f7feeaf4528bec83798316b3c811701bac5d3e upstream.

Two bits control TX power on BBP_R1 register. Correct the mask,
otherwise we clear additional bit on BBP_R1 register, what can have
unknown, possible negative effect.

Signed-off-by: Stanislaw Gruszka 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: Add missing PCI IDs for the 7260 series

2014-10-30T16:35:11+00:00

commit 4f08970f5284dce486f0e2290834aefb2a262189 upstream.

Add 4 missing PCI IDs for the 7260 series.

Signed-off-by: Oren Givon 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Greg Kroah-Hartman

rtlwifi: rtl8192cu: Add new ID

2014-10-05T21:54:13+00:00

commit c66517165610b911e4c6d268f28d8c640832dbd1 upstream.

The Sitecom WLA-2102 adapter uses this driver.

Reported-by: Nico Baggus 
Signed-off-by: Larry Finger 
Cc: Nico Baggus 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

Revert "iwlwifi: dvm: don't enable CTS to self"

2014-10-05T21:54:12+00:00

commit f47f46d7b09cf1d09e4b44b6cc4dd7d68a08028c upstream.

This reverts commit 43d826ca5979927131685cc2092c7ce862cb91cd.

This commit caused packet loss.

Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Greg Kroah-Hartman

carl9170: fix sending URBs with wrong type when using full-speed

2014-10-05T21:54:06+00:00

commit 671796dd96b6cd85b75fba9d3007bcf7e5f7c309 upstream.

The driver assumes that endpoint 4 is always an interrupt endpoint.
Unfortunately the type differs between high-speed and full-speed
configurations while in the former case it is indeed an interrupt
endpoint this is not true for the latter case - here it is a bulk
endpoint. When sending URBs with the wrong type the kernel will
generate a warning message including backtrace. In this specific
case there will be a huge amount of warnings which can bring the system
to freeze.

To fix this we are now sending URBs to endpoint 4 using the type
found in the endpoint descriptor.

A side note: The carl9170 firmware currently specifies endpoint 4 as
interrupt endpoint even in the full-speed configuration but this has
no relevance because before this firmware is loaded the endpoint type
is as described above and after the firmware is running the stick is not
reenumerated and so the old descriptor is used.

Signed-off-by: Ronald Wahl 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

mwifiex: fix Tx timeout issue

2014-07-28T15:00:06+00:00

commit d76744a93246eccdca1106037e8ee29debf48277 upstream.

https://bugzilla.kernel.org/show_bug.cgi?id=70191
https://bugzilla.kernel.org/show_bug.cgi?id=77581

It is observed that sometimes Tx packet is downloaded without
adding driver's txpd header. This results in firmware parsing
garbage data as packet length. Sometimes firmware is unable
to read the packet if length comes out as invalid. This stops
further traffic and timeout occurs.

The root cause is uninitialized fields in tx_info(skb->cb) of
packet used to get garbage values. In this case if
MWIFIEX_BUF_FLAG_REQUEUED_PKT flag is mistakenly set, txpd
header was skipped. This patch makes sure that tx_info is
correctly initialized to fix the problem.

Reported-by: Andrew Wiley 
Reported-by: Linus Gasser 
Reported-by: Michael Hirsch 
Tested-by: Xinming Hu 
Signed-off-by: Amitkumar Karwar 
Signed-off-by: Maithili Hinge 
Signed-off-by: Avinash Patil 
Signed-off-by: Bing Zhao 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: dvm: don't enable CTS to self

2014-07-28T15:00:03+00:00

commit 43d826ca5979927131685cc2092c7ce862cb91cd upstream.

We should always prefer to use full RTS protection. Using
CTS to self gives a meaningless improvement, but this flow
is much harder for the firmware which is likely to have
issues with it.

Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Greg Kroah-Hartman