net/l2tp: don't fall back on UDP [get|set]sockopt

The l2tp [get|set]sockopt() code has fallen back to the UDP functions
for socket option levels != SOL_PPPOL2TP since day one, but that has
never actually worked, since the l2tp socket isn't an inet socket.

As David Miller points out:

  "If we wanted this to work, it'd have to look up the tunnel and then
   use tunnel->sk, but I wonder how useful that would be"

Since this can never have worked so nobody could possibly have depended
on that functionality, just remove the broken code and return -EINVAL.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: James Chapman <jchapman@katalix.com>
Acked-by: David Miller <davem@davemloft.net>
Cc: Phil Turnbull <phil.turnbull@oracle.com>
Cc: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: Iccb3384e7090e8c7cbcd717c12465c45d22c4393
Remove qcrypto interface for hammerhead.

The hw crypto interface breaks l2tp vpn. And the dm engine in
hammerhead doesn't use the hw qcrypto interface. So, disable qcrypto.
The l2tp will use openssl software crypto, original aosp does this too.

Change-Id: I8f3f5005b2f9b7a0797ba2ebec77c4501a09aaf7
WLAN subsystem: Sysctl support for key TCP/IP parameters

It has been observed that default values for some of key tcp/ip
parameters are affecting the tput/performance of the system. Hence
extending configuration capabilities to TCP/Ip stack through
sysctl interface

CRs-Fixed: 507581

Change-Id: Ibaf821fcac9fba6448c5c23aef9d72946808e3cf
Signed-off-by: Kiran Kumar Lokere <klokere@codeaurora.org>
msm: Create shadow files under /sys/kernel/ipv4

The TCP delayed ack parameters can be configured from user space
application which runs with non-root credentials and does not have
direct write access to /proc entries. This commit creates shadow
files under /sys/kernel/ipv4 which maps to /proc/sys/net/ipv4.

CRs-Fixed: 628139
Change-Id: Ib7242aaae930dbc02133e44c04e182ebc52bc89f
Signed-off-by: Ravi Joshi <ravij@codeaurora.org>
ASoC: wcd9xxx: Enable headset in high performance

Invoke class AB sequence for headset path dynamically based on
module parameter. Change enables headset path in high performance
mode when module parameter is set to one.

Change-Id: If92d5c8516fbd903a9585785dba47c800be63dbc
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
ASoC: wcd9xxx: Enhance class H controller to support dynamic CP voltage

Codecs can operate at a lower voltage for vdd_buck, whereas
this voltage source being shared, it is not guaranteed that the
codec will always receive exactly the requested voltage. Add support
to class H controller to handle dynamic switching of the chargepump
voltage.

Change-Id: I68f93e0b070ec51db9b958f56c797edb5cbe0c85
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
ASoC: wcd9320: Update buck control and mode registers

Leave BUCK control registers as default and set to lower BUCK ref voltage
for avoid pop noise during playback initiation.

CRs-fixed: 506099
Change-Id: I47c068fc8344108dcd5b2c63f8a5c0a5e40a4c8b
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
ASoC: wcd9xxx: fix class H controller driver to handle concurrency

Fix class H controller driver's finite state machine to handle concurrent
playback.  This makes audio playback quality to be better with less power
consumption.

CRs-fixed: 506099
Change-Id: I621fa5a4df9964fda6c51c70e50ece2e783cafb6
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
ASoC: wcd9320: Set HPH bias currents to low power mode

Setup the headphone path PA and DAC bias currents to low power
mode to increase power consumption efficiency

CRs-fixed: 485961
Change-Id: I9492e70f404f96502c7283b38f0d1f3738647d4c
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
ASoC: wcd9320: Configure codec hardware in optimal mode

Update class H controller registers to configure codec in optimal mode.

CRs-fixed: 506099
Change-Id: I26ec0ad04bcec511ea2a37d2e357bae0345bd2a1
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
ASoC: wcd9xxx: Distortion in HPH LO combo device

Follow Class H sequence for headset, lineout and ear concurrency as per
the class H HW design sequence to avoid signal clipping.

CRs-Fixed: 602408,618992
Change-Id: I517a5df98708f7292111e5cf71ffcf6ef8c4b870
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
ASoC: wcd9xxx: Set HPH PA register to volatile

Set HPH PA register to volatile to make sure the register will be
updated with proper bits during bringup.

CRs-Fixed: 625324
Change-Id: I8334a66644dca536f0bcfef562b7f64372a47d32
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
ASoC: wcd9xxx: Change in sequence of HPH Rx path

Change HPH Rx path sequence to enable Rx clock and reset Rx interpolator
path before HPH DACs enable to avoid pop during bringup of device path.

CRs-Fixed: 616383
Change-Id: If2beefc300e11908e87c90f0ab0fab0bfaf968b1
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
ASoC: wcd9xxx: Enable headset in high performance

Invoke class AB mode for headset path when sample rate
is set to 192KHz and bit width is set to 24. Change enables
headset path in Ultra High Quality Audio(UHQA)mode.

Change-Id: I6cd05952114b88602fc9dcc883d83a39214311b9
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
ASoC: wcd9320: Add HD2 tuning coefficients for HPH path

Add 2nd Harmonic Distortion (HD2) tuning coefficients
for HPH path. HD2 coefficients get turned ON during HPH
enable and turned OFF during path tear down. Enabling HD2
coefficients would increase the Headphone PA efficiency during
audio playback.

Change-Id: I24bc053e6401d5b8f45dc62d88c7fe6a5ba01447
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
asoc: wcd9320: Use class AB headphone path for high-res formats

 * The class AB path is less efficient, but has a lower noise floor.
 * Enable this path for 24-bit or high (>96KHz) sample rate, as this
   tradeoff is worth it with lossless, high resolution music.

Change-Id: I0bf4e6f366e987f17d86b4e967e3bc8b40d86ed3
ASoC: wcd9xxx: Changes for High performance mode

Add changes for high performance audio playback on headset
for better audio quality during 192KHz/24bit audio playback.

CRs-Fixed: 706322
Change-Id: Ie79293f24114d5d81a610186d24b44b1550dae9c
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
ASoC: wcd9320: Change compander parameter for 192Khz playback

Update the meter rate parameter for compander in order to achieve
better performance with Compander support for headphone, lineout
and speaker paths for 192 KHz sampling rate. Update the static gain
offset accordingly depending on the buck voltage requested.

CRs-fixed: 481501
Change-Id: I4bb3c41e1042ba9327a21bf9375541d36487484e
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
ASoC: msm: Add PCM support in compress driver

PCM playback support is added to compress driver so that application
can use the single audio hardware device to play both compressed
and PCM audio.

Change-Id: Ie7719be8d7435088a7e4cfb5b817d4557e25e4c5
Signed-off-by: Dhananjay Kumar <dhakumar@codeaurora.org>
ASoC: msm: qdsp6v2: Remove cmd_state from ASM header function

Cmd_state indicates whether the callback has been received
and whether the function should exit wait.
Remove setting of this variable in ASM header because
some functions such as get_session_time need ASM header
but do not need to modify this flag.

CRs-fixed: 613817
Change-Id: I6751cd89b3199c7350aaf1ebb70d7062ac65554f
Signed-off-by: Damir Didjusto <damird@codeaurora.org>