wl1251: use skb_trim to make skb shorter

the current code is directly setting skb->len, which is not correct and
brings problems with HAVE_EFFICIENT_UNALIGNED_ACCESS enabled in config

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
wil6210: fix buffer overflow in wil_txdesc_debugfs_show()

Wrong index comparison logic, found by smatch:

drivers/net/wireless/ath/wil6210/debugfs.c:402 wil_txdesc_debugfs_show() warn: buffer overflow 'wil->vring_tx' 24 <= 24

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
wil6210: fix smatch warning in wil_cfg80211_get_station()

Smatch suggests to propagate error code from wil_find_cid(), and, indeed,
it is a good idea.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
connector: remove duplicated code in cn_call_callback()

There were a couple of patches fixing the same bug that
results in duplicated err = 0; assignment.
The patch removes one of them.

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
ieee802154: fix at86rf212_set_txpower() exit path

The commit 9b2777d6089bc ("ieee802154: add TX power control to
wpan_phy") introduced the new function at86rf212_set_txpower() with
the questionable check of the return of __at86rf230_write() in the
exit path:

1) Both at86rf212_set_txpower() and __at86rf230_write() have the
   same return type.

2) Whatever __at86rf230_write() returns becomes the return value of
   at86rf212_set_txpower().

Thus, fix the exit path by getting rid of that check entirely.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
sch_tbf: Remove holes in struct tbf_sched_data.

On x86_64 we have 3 holes in struct tbf_sched_data.

The member peak_present can be replaced with peak.rate_bytes_ps,
because peak.rate_bytes_ps is set only when peak is specified in
tbf_change(). tbf_peak_present() is introduced to test
peak.rate_bytes_ps.

The member max_size is moved to fill 32bit hole.

Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tcp: snmp stats for Fast Open, SYN rtx, and data pkts

Add the following snmp stats:

TCPFastOpenActiveFail: Fast Open attempts (SYN/data) failed beacuse
the remote does not accept it or the attempts timed out.

TCPSynRetrans: number of SYN and SYN/ACK retransmits to break down
retransmissions into SYN, fast-retransmits, timeout retransmits, etc.

TCPOrigDataSent: number of outgoing packets with original data (excluding
retransmission but including data-in-SYN). This counter is different from
TcpOutSegs because TcpOutSegs also tracks pure ACKs. TCPOrigDataSent is
more useful to track the TCP retransmission rate.

Change TCPFastOpenActive to track only successful Fast Opens to be symmetric to
TCPFastOpenPassive.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Nandita Dukkipati <nanditad@google.com>
Signed-off-by: Lawrence Brakmo <brakmo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bluetooth: Stop BCSP/H5 timer before cleaning up

When stopping BCSP/H5, stop the retransmission timer before proceeding
to clean up packet queues.  The previous code had a race condition where
the timer could trigger after the packet lists and protocol structure
had been removed which led to dereferencing NULL or use-after-free bugs.

Signed-off-by: Michael Knudsen <m.knudsen@samsung.com>
Reported-by: Kirill Tkhai <ktkhai@parallels.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
af_rxrpc: Keep rxrpc_call pointers in a hashtable

Keep track of rxrpc_call structures in a hashtable so they can be
found directly from the network parameters which define the call.

This allows incoming packets to be routed directly to a call without walking
through hierarchy of peer -> transport -> connection -> call and all the
spinlocks that that entailed.

Signed-off-by: Tim Smith <tim@electronghost.co.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

Conflicts:
	drivers/net/wireless/ath/ath9k/recv.c
	drivers/net/wireless/mwifiex/pcie.c
rtl818x: Make sure the TX descriptor "valid" flag is written by last

The TX descriptors are consumed by the HW using DMA.
Even if in the driver code the memory write that sets the "valid"
flag appears after all other writes, the CPU may reorder writes,
causing the HW to consider as valid a not-fully-written yet
descriptor.

This may cause HW incorrect behaviour.

This can happen because (AFAIK) the HW may attempt DMA
asynchronously without waiting to be kicked by the following
register write.

This patch adds a write memory barrier to enforce writes ordering.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtl818x: make sure TX descriptor writes are done before kicking DMA

The TX descriptors are consumed by the HW using DMA.
Even if in the driver code the TX descriptor writes appears before
the HW "dma kick" register writes, the CPU may reorder them.

If this happens, the TX may not happen at all becase the "valid"
descriptor flag may have not been set yet.

This patch adds a write memory barrier to ensures the TX
descriptor is written before writing to the HW "dma kick" register.

Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtlwifi: btcoexist: Add new mini driver

A new driver in the rtlwifi family for the RTL8723BE will soon be added.
The bluetooth coexistence code for this device has been split into a separate
mini driver as it will be shared with other devices.  This commit adds the
the headers and sources, and modifies Kconfig and Makefile to configure and
build this driver.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtlwifi: Prepare existing drivers for new driver

A driver for the RTL8723BE will soon be added. This patch adds the
necessary parts to the common headers, and modifies the existing
drivers for those changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtlwifi: rtl8723ae: rtl8723-common: Create new driver for common code

The drivers for RTL8723AE and RTL8723BE have some code in common.
This commit creates a driver for this code that will be shared, and
copies those common routines from rtl8723ae's phy code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtlwifi: rtl8723ae: rtl8723-common: Copy common firmware code

The drivers for RTL8723AE and RTL8723BE have some code in common.
This commit copies the common firmware routines into the shared
code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtlwifi: rtl8723ae: rtl8723-common: Copy common dynamic power management code

The drivers for RTL8723AE and RTL8723BE have some code in common.
This commit copies the common power management routines into the shared
code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
rtlwifi: rtl8723be: Add new driver

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Drivers:net:wireless:ti:wl1251: Fixed Sparse invalid assignment warning

Sparse warns about invalid assignment in
drivers/net/wireless/ti/wl1251/cmd.c:451:42: warning: invalid assignment: |=
drivers/net/wireless/ti/wl1251/cmd.c:451:42:    left side has type restricted __le16
drivers/net/wireless/ti/wl1251/cmd.c:451:42:    right side has type int
Hence type converted right side to __le16.

Signed-off-by: Surendra Patil <surendra.tux@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
iwl4965: disable 8K A-MSDU by default

iwlegacy version of this iwlwifi patch:

commit aed7d9ac1836defe033b561f4306e39014ac56fd
Author: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date:   Wed Feb 20 11:33:00 2013 +0200

    iwlwifi: disable 8K A-MSDU by default

    Supporting 8K A-MSDU means that we need to allocate order 1
    pages for every Rx packet. Even when there is no traffic.
    This adds stress on the memory manager. The handling of
    compound pages is also less trivial for the memory manager
    and not using them will make the allocation code run faster
    although I didn't really measure.
    Eric also pointed out that having huge buffers with little
    data in them is not very nice towards the TCP stack since
    the truesize of the skb is huge. This doesn't allow TCP
    to have a big Rx window.
    See https://patchwork.kernel.org/patch/2167711/ for details.

    Note that very few vendors will actually send A-MSDU.
    Disable this feature by default.

    Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>