GitHub/moto-9609/android_kernel_motorola_exynos9610.git
9 years agos390/bpf: increase BPF_SIZE_MAX
Michael Holzheu [Wed, 29 Jul 2015 19:15:16 +0000 (21:15 +0200)]
s390/bpf: increase BPF_SIZE_MAX

Currently we have the restriction that jitted BPF programs can
have a maximum size of one page. The reason is that we use short
displacements for the literal pool.

The 20 bit displacements are available since z990 and BPF requires
z196 as minimum. Therefore we can remove this restriction and use
everywhere 20 bit signed long displacements.

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agos390/bpf: Fix multiple macro expansions
Michael Holzheu [Wed, 29 Jul 2015 19:15:15 +0000 (21:15 +0200)]
s390/bpf: Fix multiple macro expansions

The EMIT6_DISP_LH macro passes the "disp" parameter to the _EMIT6_DISP_LH
macro. The _EMIT6_DISP_LH macro uses the "disp" parameter twice:

 unsigned int __disp_h = ((u32)disp) & 0xff000;
 unsigned int __disp_l = ((u32)disp) & 0x00fff;

The EMIT6_DISP_LH is used several times with EMIT_CONST_U64() as "disp"
parameter. Therefore always two constants are created per usage of
EMIT6_DISP_LH.

Fix this and add variable "_disp" to avoid multiple expansions.

* v2: Move "_disp" to _EMIT6_DISP_LH as suggested by Joe Perches

Fixes: 054623105728 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agos390/bpf: clear correct BPF accumulator register
Michael Holzheu [Wed, 29 Jul 2015 19:15:14 +0000 (21:15 +0200)]
s390/bpf: clear correct BPF accumulator register

Currently we assumed the following BPF to eBPF register mapping:

 - BPF_REG_A -> BPF_REG_7
 - BPF_REG_X -> BPF_REG_8

Unfortunately this mapping is wrong. The correct mapping is:

 - BPF_REG_A -> BPF_REG_0
 - BPF_REG_X -> BPF_REG_7

So clear the correct registers and use the BPF_REG_A and BPF_REG_X
macros instead of BPF_REG_0/7.

Fixes: 054623105728 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Cc: stable@vger.kernel.org # 4.0+
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_en: Hardware accelerated 802.1ad works only on the first port
Amir Vadai [Tue, 28 Jul 2015 10:19:19 +0000 (13:19 +0300)]
net/mlx4_en: Hardware accelerated 802.1ad works only on the first port

Fix mistakenly used, hard coded, port number in get_phv_bit()

Fixes: 77fc29c ("net/mlx4_core: Preparations for 802.1ad VLAN support")
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'stmmac-cleanup'
David S. Miller [Wed, 29 Jul 2015 07:13:25 +0000 (00:13 -0700)]
Merge branch 'stmmac-cleanup'

Joachim Eastwood says:

====================
stmmac clean up for 4.3 part2

This patch set creates proper probe functions in the remaining
dwmac-* drivers, lets the drivers manage their own of match data
structure, and cleans up some of the drivers a bit. Note that
should be no functional change in any of the drivers.

First patch from Fengguang fixes a Coccinelle that was found after
the previous patch set when into next.

Probe functions are best placed just above the platform_driver
struct since it usually needs to call other functions in the
driver but this requires some code movement in the drivers. To
keep the conversion itself easier to review the code movement is
done in separate patches. This creates some extra churn but I
think it's worth it in this case.

As only a couple of drivers actually needs to use of match data
this pushed down from stmmac_platform and into the drivers. This
also makes it possible for drivers to have their own match data
structure. dwmac-rk benefits most from this.

After each driver has it's own probe function and manages it's
own match data the setup/free hooks and common match data struct
are removed.

Sorry for the slightly largish patch set this time around.

Since I can only test the core changes on my platform and not the
specific dwmac-drivers I greatly appreciate if people could test
this on their respective platforms. I did spend quite a bit of
time visually checking all these patches, but nothing beats real
hardware testing. Thanks!

Patch set based on net-next can also be picked up from here:
https://github.com/manabian/linux-lpc.git stmmac_4.3_part2

For those who want to have a look at all the patches for
v4.3 a branch based on Linus master can be found here:
https://github.com/manabian/linux-lpc.git stmmac_4.2

Previous parts can be found here:
http://www.spinics.net/lists/netdev/msg328997.html
http://www.spinics.net/lists/netdev/msg329932.html
http://www.spinics.net/lists/netdev/msg336097.html
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-sti: refactor the init glue callbacks
Joachim Eastwood [Tue, 28 Jul 2015 22:09:04 +0000 (00:09 +0200)]
stmmac: dwmac-sti: refactor the init glue callbacks

Remove the two platform specific init callbacks and make
them use a common one by creating a function member in
the internal data structure. This allow us to remove the
layer of indirection and simplify the code a bit.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: remove setup/free glue callbacks
Joachim Eastwood [Tue, 28 Jul 2015 22:09:03 +0000 (00:09 +0200)]
stmmac: remove setup/free glue callbacks

As all dwmac-* drivers have been converted to have a proper probe
function the setup callback can now be removed. Also remove the
free callback that wasn't used by any driver.

New dwmac-* drivers should implement standard probe and remove
functions to preform any needed setup and teardown.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: remove unused stmmac_of_data struct
Joachim Eastwood [Tue, 28 Jul 2015 22:09:02 +0000 (00:09 +0200)]
stmmac: remove unused stmmac_of_data struct

As dwmac-* drivers that need OF match have been converted
to use their own internal OF match data structure this can
now be removed.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-rk: use rk_gmac_ops as of match data
Joachim Eastwood [Tue, 28 Jul 2015 22:09:01 +0000 (00:09 +0200)]
stmmac: dwmac-rk: use rk_gmac_ops as of match data

Remove the setup glue callback and use rk_gmac_ops as OF match
data so it can used directly when calling rk_gmac_setup.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-rk: make rk_gmac_ops structs static const
Joachim Eastwood [Tue, 28 Jul 2015 22:09:00 +0000 (00:09 +0200)]
stmmac: dwmac-rk: make rk_gmac_ops structs static const

Mark the rk_gmac_ops structures as static const as they should be.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-sti: use custom of match structure
Joachim Eastwood [Tue, 28 Jul 2015 22:08:59 +0000 (00:08 +0200)]
stmmac: dwmac-sti: use custom of match structure

Create a new private structure for OF match data in the
dwmac-sti driver. This enables us to eventually drop the
common OF match data structure which contains a lot of
unused fields.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: let dwmac-* drivers handle their own match data
Joachim Eastwood [Tue, 28 Jul 2015 22:08:58 +0000 (00:08 +0200)]
stmmac: let dwmac-* drivers handle their own match data

Since only a few of the dwmac-* drivers actually need to use
the OF match move handling into the dwmac-* drivers that need
it. This will also allow dwmac-* drivers to use their own
custom match data structure.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: move stmmac_pltfr_probe into dwmac-generic
Joachim Eastwood [Tue, 28 Jul 2015 22:08:57 +0000 (00:08 +0200)]
stmmac: move stmmac_pltfr_probe into dwmac-generic

As all dwmac-* drivers now have their own probe function move
the common one into dwmac-generic driver and drop the EXPORT.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-rk: create a new probe function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:56 +0000 (00:08 +0200)]
stmmac: dwmac-rk: create a new probe function

Create a new probe functions that call the necessary setup
functions. This is done in preparation for a code refactor
in this driver and dropping the common probe function in
stmmac_platform.c.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-sti: turn setup callback into a probe function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:55 +0000 (00:08 +0200)]
stmmac: dwmac-sti: turn setup callback into a probe function

By using a few functions from stmmac_platform a proper probe
function can be created from the setup glue callback. This
makes it look more like a standard driver and prepares the
driver for further clean ups.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-sunxi: turn setup callback into a probe function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:54 +0000 (00:08 +0200)]
stmmac: dwmac-sunxi: turn setup callback into a probe function

By using a few functions from stmmac_platform a proper probe
function can be created from the setup glue callback. This
makes it look more like a standard driver and the OF match
data can also be dropped.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-sunxi: move sun7i_gmac_setup function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:53 +0000 (00:08 +0200)]
stmmac: dwmac-sunxi: move sun7i_gmac_setup function

Move sun7i_gmac_setup in preparation for turning it into
a proper probe function.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-socfpga: turn setup callback into a probe function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:52 +0000 (00:08 +0200)]
stmmac: dwmac-socfpga: turn setup callback into a probe function

By using a few functions from stmmac_platform a proper probe
function can be created from the setup glue callback. This
makes it look more like a standard driver and the OF match
data can also be dropped.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-socfpga: move socfpga_dwmac_probe function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:51 +0000 (00:08 +0200)]
stmmac: dwmac-socfpga: move socfpga_dwmac_probe function

Move socfpga_dwmac_probe in preparation for turning it into
a proper probe function.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-ipq806x: turn setup callback into a probe function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:50 +0000 (00:08 +0200)]
stmmac: dwmac-ipq806x: turn setup callback into a probe function

By using a few functions from stmmac_platform a proper probe
function can be created from the setup glue callback. This
makes it look more like a standard driver and the OF match
data can also be dropped.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: dwmac-ipq806x: move ipq806x_gmac_fix_mac_speed function
Joachim Eastwood [Tue, 28 Jul 2015 22:08:49 +0000 (00:08 +0200)]
stmmac: dwmac-ipq806x: move ipq806x_gmac_fix_mac_speed function

Move ipq806x_gmac_fix_mac_speed in preparation for turning
the setup glue callback in a proper probe function.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: fix ptr_ret.cocci warning
Fengguang Wu [Tue, 28 Jul 2015 22:08:48 +0000 (00:08 +0200)]
stmmac: fix ptr_ret.cocci warning

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:304:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
[je: rebase and insert newline before return]
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'dwc_ethernet'
David S. Miller [Wed, 29 Jul 2015 06:55:01 +0000 (23:55 -0700)]
Merge branch 'dwc_ethernet'

Lars Persson says:

====================
dwc_eth_qos: Add support for Synopsys DWC Ethernet QoS

This is a driver supporting version 4.10a of the Synopsys DWC Ethernet QoS
gigabit ethernet controller. The IP has changed significantly compared to the
dwmac1000 so a separate driver is justified.

The IP is highly configurable at synthesis time. This driver has been
developed for a subset of the total available feature set. Currently
it supports:
* TSO
* Checksum offload for RX and TX.
* Energy efficient ethernet.
* GMII phy interface.
* The statistics module.
* Single RX and TX queue.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodwc_eth_qos: Add maintainer info
Lars Persson [Tue, 28 Jul 2015 10:01:50 +0000 (12:01 +0200)]
dwc_eth_qos: Add maintainer info

Add maintainer information for the Synopsys DWC Ethernet QOS driver.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodwc_eth_qos: Add the synopsys folder to the build system.
Lars Persson [Tue, 28 Jul 2015 10:01:49 +0000 (12:01 +0200)]
dwc_eth_qos: Add the synopsys folder to the build system.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodwc_eth_qos: Add support for Synopsys DWC Ethernet QoS
Lars Persson [Tue, 28 Jul 2015 10:01:48 +0000 (12:01 +0200)]
dwc_eth_qos: Add support for Synopsys DWC Ethernet QoS

This patch adds a platform driver for the new generation of the
gigabit ethernet IP from Synopsys. It is developed for version 4.10a
of the IP core.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodwc_eth_qos: Add Synopsys DWC Ethernet QoS bindings
Lars Persson [Tue, 28 Jul 2015 10:01:47 +0000 (12:01 +0200)]
dwc_eth_qos: Add Synopsys DWC Ethernet QoS bindings

Add device tree binding documentation for the Synopsys DWC Ethernet
QoS driver supporting revision 4.10a of the hardware IP.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mlx4-802.1ad-accel'
David S. Miller [Mon, 27 Jul 2015 22:00:37 +0000 (15:00 -0700)]
Merge branch 'mlx4-802.1ad-accel'

Amir Vadai says:

====================
net/mlx4_en: Hardware accelerated 802.1ad

This patchset by Hadar introduces support in Hardware accelerated 802.1ad, for
ConnectX-3pro NIC's.  In order to support existing deployment, and due to some
hardware limitations, the feature is disabled by default, and needed to be
enabled using a private flag in ethtool. Ofcourse user can enable the private
flag only if hardware has support.
After being enabled, the standard ethtool -k/-K can be used.

Patchset was applied and tested over commit 71790a2 ("hv_netvsc: Add structs
and handlers for VF messages")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_en: Add support for hardware accelerated 802.1ad vlan
Hadar Hen Zion [Mon, 27 Jul 2015 11:46:34 +0000 (14:46 +0300)]
net/mlx4_en: Add support for hardware accelerated 802.1ad vlan

To enable device support in accelerated 802.1ad vlan, the port
capability "packet has vlan enable" (phv_en) should be set.
Firmware won't work properly, in case phv_en is not set.

The user can enable "phv_en" port capability with the new ethtool
private flag phv-bit. The phv-bit private flag default value is OFF,
users who are interested in 802.1ad hardware acceleration should turn ON
the phv-bit private flag:
$ ethtool --set-priv-flags eth1 phv-bit on

Once the private flag is set, the device is ready for 802.1ad vlan
acceleration.

The user should also change the interface device features and turn on
"tx-vlan-stag-hw-insert" which is off by default:
$ ethtool -K eth1  tx-vlan-stag-hw-insert on

"phv-bit" private flag setting is available only for Physical
Functions(PF), the Virtual Function (VF) will be able to use the feature
by setting "tx-vlan-stag-hw-insert" ethtool device feature only if the
feature was enabled by the Hypervisor.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4: Prepare VLAN macros for 802.1ad Hardware accelerated support
Hadar Hen Zion [Mon, 27 Jul 2015 11:46:33 +0000 (14:46 +0300)]
net/mlx4: Prepare VLAN macros for 802.1ad Hardware accelerated support

To add Hardware accelerated support in 802.1ad vlan, replace
Current VLAN macros to CVLAN.
Replace:
MLX4_WQE_CTRL_INS_VLAN
MLX4_CQE_VLAN_PRESENT_MASK
With:
MLX4_WQE_CTRL_INS_CVLAN
MLX4_CQE_CVLAN_PRESENT_MASK

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_en: Prepare ethtool private flags to support more flags
Hadar Hen Zion [Mon, 27 Jul 2015 11:46:32 +0000 (14:46 +0300)]
net/mlx4_en: Prepare ethtool private flags to support more flags

Currently we support only one ethtool private flag. Prepare
mlx4_en_set_priv_flags function to support more than one private flag.
Will be used in the next patch to support hardware accelerated 802.1ad
vlan.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Preparations for 802.1ad VLAN support
Hadar Hen Zion [Mon, 27 Jul 2015 11:46:31 +0000 (14:46 +0300)]
net/mlx4_core: Preparations for 802.1ad VLAN support

mlx4_core preparation to support hardware accelerated 802.1ad VLAN
device.

To allow 802.1ad accelerated device, "packet has vlan" (phv)
Firmware capability should be available. Firmware without the
phv capability won't behave properly and can't support 802.1ad device
acceleration.

The driver checks the Firmware capability and sets the phv bit
accordingly in SET_PORT command.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'arm-bpf-next'
David S. Miller [Mon, 27 Jul 2015 21:57:41 +0000 (14:57 -0700)]
Merge branch 'arm-bpf-next'

Nicolas Schichan says:

====================
ARM BPF JIT features

This series adds support for more instructions to the ARM BPF JIT
namely skb netdevice type retrieval, skb payload offset retrieval, and
skb packet type retrieval.

This allows 35 tests to use the JIT instead of 29 before.

This series depends on the "BPF JIT fixes for ARM" serie sent earlier.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoARM: net: add support for BPF_ANC | SKF_AD_HATYPE in ARM JIT.
Nicolas Schichan [Mon, 27 Jul 2015 13:06:51 +0000 (15:06 +0200)]
ARM: net: add support for BPF_ANC | SKF_AD_HATYPE in ARM JIT.

Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoARM: net: add support for BPF_ANC | SKF_AD_PAY_OFFSET in ARM JIT.
Nicolas Schichan [Mon, 27 Jul 2015 13:06:50 +0000 (15:06 +0200)]
ARM: net: add support for BPF_ANC | SKF_AD_PAY_OFFSET in ARM JIT.

Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoARM: net: add support for BPF_ANC | SKF_AD_PKTTYPE in ARM JIT.
Nicolas Schichan [Mon, 27 Jul 2015 13:06:49 +0000 (15:06 +0200)]
ARM: net: add support for BPF_ANC | SKF_AD_PKTTYPE in ARM JIT.

Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agolwtunnel: use kfree_skb() instead of vanilla kfree()
Dan Carpenter [Mon, 27 Jul 2015 08:07:47 +0000 (11:07 +0300)]
lwtunnel: use kfree_skb() instead of vanilla kfree()

kfree_skb() is correct here.

Fixes: ffce41962ef6 ('lwtunnel: support dst output redirect function')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotcp: tso: allow deferring under reordering state
Eric Dumazet [Sun, 26 Jul 2015 07:45:24 +0000 (09:45 +0200)]
tcp: tso: allow deferring under reordering state

While doing experiments with reordering resilience, we found
linux senders were not able to send at full speed under reordering,
because every incoming SACK was releasing one MSS.

This patch removes the limitation, as we did for CWR state
in commit a0ea700e409 ("tcp: tso: allow CA_CWR state in
tcp_tso_should_defer()")

Neal Cardwell had a concern about limited transmit so
Yuchung conducted experiments on GFE and found nothing
worth adding an extra check on fast path :

  if (icsk->icsk_ca_state == TCP_CA_Disorder &&
      tcp_sk(sk)->reordering == sysctl_tcp_reordering)
          goto send_now;

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoravb: minimize TX data copying
Sergei Shtylyov [Sat, 25 Jul 2015 20:42:01 +0000 (23:42 +0300)]
ravb: minimize TX data copying

Renesas Ethernet AVB controller requires that all data are aligned on 4-byte
boundary.  While it's  easily achievable for  the RX  data with  the help of
skb_reserve() (we even align on 128-byte boundary as recommended by the manual),
we  can't  do the same with the TX data, and it always comes  unaligned from
the networking core. Originally we solved it an easy way, copying all packet
to  a  preallocated  aligned buffer; however, it's enough to copy only up to
3 first bytes from each packet, doing the transfer using 2 TX descriptors
instead of just 1. Here's an implementation of the new  TX algorithm that
significantly reduces the driver's memory requirements.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodsa: mv88e6352/mv88e6xxx: Move temperature sensor code to mv88e6xxx.c
Guenter Roeck [Sat, 25 Jul 2015 16:42:28 +0000 (09:42 -0700)]
dsa: mv88e6352/mv88e6xxx: Move temperature sensor code to mv88e6xxx.c

Move the temperature sensing code for mv88e6352 and mv88e6320 families
into mv88e6xxx.c to simplify adding support for additional chips.

With this change, mv88e6xxx_6320_family() no longer needs to be
a global function and is made static.

Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohv_netvsc: Add structs and handlers for VF messages
Haiyang Zhang [Fri, 24 Jul 2015 17:08:40 +0000 (10:08 -0700)]
hv_netvsc: Add structs and handlers for VF messages

This patch adds data structures and handlers for messages related
to SRIOV Virtual Function.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'rt6_probe_write_lock'
David S. Miller [Mon, 27 Jul 2015 08:08:26 +0000 (01:08 -0700)]
Merge branch 'rt6_probe_write_lock'

Martin KaFai Lau says:

====================
ipv6: Avoid rt6_probe() taking writer lock in the fast path

v1 -> v2:
1. Separate the code re-arrangement into another patch
2. Fix style
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: Avoid rt6_probe() taking writer lock in the fast path
Martin KaFai Lau [Fri, 24 Jul 2015 16:57:43 +0000 (09:57 -0700)]
ipv6: Avoid rt6_probe() taking writer lock in the fast path

The patch checks neigh->nud_state before acquiring the writer lock.
Note that rt6_probe() is only used in CONFIG_IPV6_ROUTER_PREF.

40 udpflood processes and a /64 gateway route are used.
The gateway has NUD_PERMANENT.  Each of them is run for 30s.
At the end, the total number of finished sendto():

Before: 55M
After: 95M

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
CC: Julian Anastasov <ja@ssi.bg>
CC: YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: Re-arrange code in rt6_probe()
Martin KaFai Lau [Fri, 24 Jul 2015 16:57:42 +0000 (09:57 -0700)]
ipv6: Re-arrange code in rt6_probe()

It is a prep work for the next patch to remove write_lock
from rt6_probe().

1. Reduce the number of if(neigh) check.  From 4 to 1.
2. Bring the write_(un)lock() closer to the operations that the
   lock is protecting.

Hopefully, the above make rt6_probe() more readable.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Julian Anastasov <ja@ssi.bg>
Cc: YOSHIFUJI Hideaki <hideaki.yoshifuji@miraclelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: convert num_grat_arp to the new bonding option API
Nikolay Aleksandrov [Fri, 24 Jul 2015 13:50:31 +0000 (15:50 +0200)]
bonding: convert num_grat_arp to the new bonding option API

num_grat_arp wasn't converted to the new bonding option API, so do this
now and remove the specific sysfs store option in order to use the
standard one. num_grat_arp is the same as num_unsol_na so add it as an
alias with the same option settings. An important difference is the option
name which is matched in bond_sysfs_store_option().

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: phy: fix auto negotiation checking for teranetics
Shaohui Xie [Fri, 24 Jul 2015 11:26:02 +0000 (19:26 +0800)]
net: phy: fix auto negotiation checking for teranetics

When using fiber port, the phy cannot report it's auto negotiation state,
driver should always report auto negotiation is done when using fiber port.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agolwtunnel: change prototype of lwtunnel_state_get()
Nicolas Dichtel [Fri, 24 Jul 2015 10:28:36 +0000 (12:28 +0200)]
lwtunnel: change prototype of lwtunnel_state_get()

It saves some lines and simplify a bit the code when the state is returning
by this function. It's also useful to handle a NULL entry.

To avoid too long lines, I've also renamed lwtunnel_state_get() and
lwtunnel_state_put() to lwtstate_get() and lwtstate_put().

CC: Thomas Graf <tgraf@suug.ch>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: copy lwtstate in ip6_rt_copy_init()
Nicolas Dichtel [Fri, 24 Jul 2015 10:28:35 +0000 (12:28 +0200)]
ipv6: copy lwtstate in ip6_rt_copy_init()

We need to copy this field (ip6_rt_cache_alloc() and ip6_rt_pcpu_alloc()
use ip6_rt_copy_init() to build a dst).

CC: Thomas Graf <tgraf@suug.ch>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Fixes: 19e42e451506 ("ipv6: support for fib route lwtunnel encap attributes")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: use lwtunnel_output6() only if flag redirect is set
Nicolas Dichtel [Fri, 24 Jul 2015 08:59:41 +0000 (10:59 +0200)]
ipv6: use lwtunnel_output6() only if flag redirect is set

This function make sense only when LWTUNNEL_STATE_OUTPUT_REDIRECT is set.
The check is already done in IPv4.

CC: Thomas Graf <tgraf@suug.ch>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Fixes: 74a0f2fe8ed5 ("ipv6: rt6_info output redirect to tunnel output")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: phy: dp83867: fix simple_return.cocci warnings
Wu Fengguang [Fri, 24 Jul 2015 06:16:10 +0000 (14:16 +0800)]
net: phy: dp83867: fix simple_return.cocci warnings

drivers/net/phy/dp83867.c:126:1-4: WARNING: end returns can be simpified
drivers/net/phy/dp83867.c:74:5-8: WARNING: end returns can be simpified if tested value is negative or 0

 Simplify a trivial if-return sequence.  Possibly combine with a
 preceding function call.

Generated by: scripts/coccinelle/misc/simple_return.cocci

CC: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodev: Spelling fix in comments
subashab@codeaurora.org [Fri, 24 Jul 2015 03:03:29 +0000 (03:03 +0000)]
dev: Spelling fix in comments

Fix the following typo
- unchainged -> unchanged

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoebpf: Allow dereferences of PTR_TO_STACK registers
Alex Gartrell [Thu, 23 Jul 2015 21:24:40 +0000 (14:24 -0700)]
ebpf: Allow dereferences of PTR_TO_STACK registers

mov %rsp, %r1           ; r1 = rsp
        add $-8, %r1            ; r1 = rsp - 8
        store_q $123, -8(%rsp)  ; *(u64*)r1 = 123  <- valid
        store_q $123, (%r1)     ; *(u64*)r1 = 123  <- previously invalid
        mov $0, %r0
        exit                    ; Always need to exit

And we'd get the following error:

0: (bf) r1 = r10
1: (07) r1 += -8
2: (7a) *(u64 *)(r10 -8) = 999
3: (7a) *(u64 *)(r1 +0) = 999
R1 invalid mem access 'fp'

Unable to load program

We already know that a register is a stack address and the appropriate
offset, so we should be able to validate those references as well.

Signed-off-by: Alex Gartrell <agartrell@fb.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mlx5e-next'
David S. Miller [Mon, 27 Jul 2015 07:29:18 +0000 (00:29 -0700)]
Merge branch 'mlx5e-next'

Amir Vadai says:

====================
ConnectX-4 driver update 2015-07-23

This patchset introduce some performance enhancements to the ConnectX-4 driver.
1. Improving RSS distribution, and make RSS function controlable using ethtool.
2. Make memory that is written by NIC and read by host CPU allocate in the
   local NUMA to the processing CPU
3. Support tx copybreak
4. Using hardware feature called blueflame to save DMA reads when possible

Another patch by Achiad fix some cosmetic issues in the driver.

Patchset was applied and tested on top of commit 045a0fa ("ip_tunnel: Call
ip_tunnel_core_init() from inet_init()")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx5e: Input IPSEC.SPI into the RX RSS hash function
Achiad Shochat [Thu, 23 Jul 2015 20:36:01 +0000 (23:36 +0300)]
net/mlx5e: Input IPSEC.SPI into the RX RSS hash function

In addition to the source/destination IP which are already hashed.
Only for unicast traffic for now.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx5e: Cosmetics: use BIT() instead of "1 <<", and others
Achiad Shochat [Thu, 23 Jul 2015 20:36:00 +0000 (23:36 +0300)]
net/mlx5e: Cosmetics: use BIT() instead of "1 <<", and others

No logical change in this commit.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx5e: TX latency optimization to save DMA reads
Achiad Shochat [Thu, 23 Jul 2015 20:35:59 +0000 (23:35 +0300)]
net/mlx5e: TX latency optimization to save DMA reads

A regular TX WQE execution involves two or more DMA reads -
one to fetch the WQE, and another one per WQE gather entry.

These DMA reads obviously increase the TX latency.
There are two mlx5 mechanisms to bypass these DMA reads:
1) Inline WQE
2) Blue Flame (BF)

An inline WQE contains a whole packet, thus saves the DMA read/s
of the regular WQE gather entry/s. Inline WQE support was already
added in the previous commit.

A BF WQE is written directly to the device I/O mapped memory, thus
enables saving the DMA read that fetches the WQE.

The BF WQE I/O write must be in cache line granularity, thus uses
the CPU write combining mechanism.
A BF WQE I/O write acts also as a TX doorbell for notifying the
device of new TX WQEs.
A BF WQE is written to the same I/O mapped address as the regular TX
doorbell, thus this address is being mapped twice - once by ioremap()
and once by io_mapping_map_wc().

While both mechanisms reduce the TX latency, they both consume more CPU
cycles than a regular WQE:
- A BF WQE must still be written to host memory, in addition to being
  written directly to the device I/O mapped memory.
- An inline WQE involves copying the SKB data into it.

To handle this tradeoff, we introduce here a heuristic algorithm that
strives to avoid using these two mechanisms in case the TX queue is
being back-pressured by the device, and limit their usage rate otherwise.

An inline WQE will always be "Blue Flamed" (written directly to the
device I/O mapped memory) while a BF WQE may not be inlined (may contain
gather entries).

Preliminary testing using netperf UDP_RR shows that the latency goes down
from 17.5us to 16.9us, while the message rate (tested with pktgen) stays
the same.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx5e: Support TX packet copy into WQE
Achiad Shochat [Thu, 23 Jul 2015 20:35:58 +0000 (23:35 +0300)]
net/mlx5e: Support TX packet copy into WQE

AKA inline WQE.
A TX latency optimization to save data gather DMA reads.
Controlled by ETHTOOL_TX_COPYBREAK.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx5e: Allocate DMA coherent memory on reader NUMA node
Saeed Mahameed [Thu, 23 Jul 2015 20:35:57 +0000 (23:35 +0300)]
net/mlx5e: Allocate DMA coherent memory on reader NUMA node

By affinity hints and XPS, each mlx5e channel is assigned a CPU
core.

Channel DMA coherent memory that is written by the NIC and read
by SW (e.g CQ buffer) is allocated on the NUMA node of the CPU
core assigned for the channel.

Channel DMA coherent memory that is written by SW and read by the
NIC (e.g SQ/RQ buffer) is allocated on the NUMA node of the NIC.

Doorbell record (written by SW and read by the NIC) is an
exception since it is accessed by SW more frequently.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx5e: Support ETH_RSS_HASH_XOR
Saeed Mahameed [Thu, 23 Jul 2015 20:35:56 +0000 (23:35 +0300)]
net/mlx5e: Support ETH_RSS_HASH_XOR

The ConnectX-4 HW implements inverted XOR8.
To make it act as XOR we re-order the HW RSS indirection table.

Set XOR to be the default RSS hash function and add ethtool API to
control it.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'netcp-next'
David S. Miller [Mon, 27 Jul 2015 07:18:40 +0000 (00:18 -0700)]
Merge branch 'netcp-next'

WingMan Kwok says:

====================
net: netcp: Bug fixes of CPSW statistics collection

This patch set contains bug fixes and enhencements of hw ethernet
statistics processing on TI's Keystone2 CPSW ethernet switches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: Adds missing statistics for K2L and K2E
WingMan Kwok [Thu, 23 Jul 2015 19:57:24 +0000 (15:57 -0400)]
net: netcp: Adds missing statistics for K2L and K2E

This patch adds the missing statistics for the host
and slave ports of the CPSW on K2L and K2E platforms.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: Fixes to CPSW statistics collection
WingMan Kwok [Thu, 23 Jul 2015 19:57:23 +0000 (15:57 -0400)]
net: netcp: Fixes to CPSW statistics collection

In certain applications it's beneficial to allow the CPSW h/w
stats counters to continue to increment even while the kernel
polls them. This patch implements this behavior for both 1G
and 10G ethernet subsystem modules.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: Consolidates statistics collection code
WingMan Kwok [Thu, 23 Jul 2015 19:57:22 +0000 (15:57 -0400)]
net: netcp: Consolidates statistics collection code

Different Keystone2 platforms have different number and
layouts of hw statistics modules.  This patch consolidates
the statistics processing of different Keystone2 platforms
for easy maintenance.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: Fixes error in oversized memory allocation for statistics storage
WingMan Kwok [Thu, 23 Jul 2015 19:57:21 +0000 (15:57 -0400)]
net: netcp: Fixes error in oversized memory allocation for statistics storage

The CPSW driver keeps internally some, but not all, of
the statistics available in the hw statistics modules.  Furthermore,
some of the locations in the hw statistics modules are reserved and
contain no useful information.  Prior to this patch, the driver
allocates memory of the size of the the whole hw statistics modules,
instead of the size of statistics-entries-interested-in (i.e. et_stats),
for internal storage.  This patch fixes that.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: Fixes hw statistics module base setting error
WingMan Kwok [Thu, 23 Jul 2015 19:57:20 +0000 (15:57 -0400)]
net: netcp: Fixes hw statistics module base setting error

This patch fixes error in the setting of the hw statistics
module base for K2HK platform.  In K2HK although there are
4 hw statistics modules, but only 2 are visible at a time.
Thus when setting up the pointers to the base of the
corresponding hw statistics modules, modules 0 and 2 should
point to one base, while modules 1 and 3 should point to the
other.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: Fixes the use of spin_lock_bh in timer function
WingMan Kwok [Thu, 23 Jul 2015 19:57:19 +0000 (15:57 -0400)]
net: netcp: Fixes the use of spin_lock_bh in timer function

This patch fixes a bug in which the timer routine synchronized
against the ethtool-triggered statistics updates with spin_lock_bh().
A timer function is itself a bottom-half, so this should be
spin_lock().

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4vf: Read correct FL congestion threshold for T5 and T6
Hariprasad Shenai [Thu, 23 Jul 2015 17:11:14 +0000 (22:41 +0530)]
cxgb4vf: Read correct FL congestion threshold for T5 and T6

VF driver was reading incorrect freelist congestion notification threshold
for FLM queues when packing is enabled for T5 and T6 adapter. Fixing it
now.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agolwtunnel: export linux/lwtunnel.h to userspace
Nicolas Dichtel [Thu, 23 Jul 2015 13:43:56 +0000 (15:43 +0200)]
lwtunnel: export linux/lwtunnel.h to userspace

Note also that include/linux/lwtunnel.h is not needed.

CC: Thomas Graf <tgraf@suug.ch>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Fixes: 499a24256862 ("lwtunnel: infrastructure for handling light weight tunnels like mpls")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobridge: mdb: notify on router port add and del
Satish Ashok [Thu, 23 Jul 2015 12:00:53 +0000 (05:00 -0700)]
bridge: mdb: notify on router port add and del

Send notifications on router port add and del/expire, re-use the already
existing MDBA_ROUTER and send NEWMDB/DELMDB netlink notifications
respectively.

Signed-off-by: Satish Ashok <sashok@cumulusnetworks.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoopenvswitch: Retrieve tunnel metadata when receiving from vport-netdev
Thomas Graf [Thu, 23 Jul 2015 11:04:44 +0000 (13:04 +0200)]
openvswitch: Retrieve tunnel metadata when receiving from vport-netdev

Retrieve the tunnel metadata for packets received by a net_device and
provide it to ovs_vport_receive() for flow key extraction.

[This hunk was in the GRE patch in the initial series and missed the
 cut for the initial submission for merging.]

Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: macb: Change capability mask for jumbo support
Harini Katakam [Thu, 23 Jul 2015 10:14:25 +0000 (15:44 +0530)]
net: macb: Change capability mask for jumbo support

JUMBO and NO_GIGABIT_HALF have the same capability masks.
Change one of them.

Signed-off-by: Harini Katakam <harinik@xilinx.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoopenvswitch: fix compilation when vxlan is a module
Nicolas Dichtel [Thu, 23 Jul 2015 09:29:07 +0000 (11:29 +0200)]
openvswitch: fix compilation when vxlan is a module

With CONFIG_VXLAN=m and CONFIG_OPENVSWITCH=y, there was the following
compilation error:
  LD      init/built-in.o
  net/built-in.o: In function `vxlan_tnl_create':
  .../net/openvswitch/vport-netdev.c:322: undefined reference to `vxlan_dev_create'
  make: *** [vmlinux] Error 1

CC: Thomas Graf <tgraf@suug.ch>
Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv4: be more aggressive when probing alternative gateways
Julian Anastasov [Thu, 23 Jul 2015 07:39:35 +0000 (10:39 +0300)]
ipv4: be more aggressive when probing alternative gateways

Currently, we do not notice if new alternative gateways
are added. We can do it by checking for present neigh
entry. Also, gateways that are currently probed (NUD_INCOMPLETE)
can be skipped from round-robin probing.

Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: fix crash over flow-based vxlan device
Wei-Chun Chao [Thu, 23 Jul 2015 01:13:12 +0000 (18:13 -0700)]
ipv6: fix crash over flow-based vxlan device

Similar check was added in ip_rcv but not in ipv6_rcv.

BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff81734e0a>] ipv6_rcv+0xfa/0x500
Call Trace:
[<ffffffff816c9786>] ? ip_rcv+0x296/0x400
[<ffffffff817732d2>] ? packet_rcv+0x52/0x410
[<ffffffff8168e99f>] __netif_receive_skb_core+0x63f/0x9a0
[<ffffffffc02b34a0>] ? br_handle_frame_finish+0x580/0x580 [bridge]
[<ffffffff8109912c>] ? update_rq_clock.part.81+0x1c/0x40
[<ffffffff8168ed18>] __netif_receive_skb+0x18/0x60
[<ffffffff8168fa1f>] process_backlog+0x9f/0x150

Fixes: ee122c79d422 (vxlan: Flow based tunneling)
Signed-off-by: Wei-Chun Chao <weichunc@plumgrid.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: bcmgenet: Register link_update callback for all MoCA PHYs
Florian Fainelli [Thu, 23 Jul 2015 00:29:53 +0000 (17:29 -0700)]
net: bcmgenet: Register link_update callback for all MoCA PHYs

Commit 8d88c6ebb34c ("net: bcmgenet: enable MoCA link state change
detection") added a fixed PHY link_update callback for MoCA PHYs when
registered using platform_data exclusively, this change is also
applicable to systems using Device Tree as their primary configuration
interface.

In order for this to work, move the link_update assignment into
bcmgenet_moca_phy_setup() where we know for sure that we are running on
a MoCA GENET instance, and do not override phydev->link since this is:

- properly taken care of by the PHY library by getting the link UP/DOWN
  interrupts
- this now runs everytime we call bcmgenet_open(), so we need to
  preserve whatever we detected before we went administratively DOWN and
  then UP
- we need to make sure that MoCA PHYs start with a link DOWN during
  probe in order to force a link transition to occur

To avoid a forward declaration, move bcmgenet_fixed_phy_link_update()
above its caller.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: bcmgenet: Remove checks on clock handles
Florian Fainelli [Thu, 23 Jul 2015 00:28:23 +0000 (17:28 -0700)]
net: bcmgenet: Remove checks on clock handles

Instead of multiplying the number of checks for IS_ERR(priv->clk),
simply NULLify the 'struct clk' pointer which is something the Linux
common clock framework perfectly deals with and does early return for
each and every single clk_* API functions.

Having every single function check for !IS_ERR(priv->clk) is both
redundant and error prone, as it turns out, we were doing it for the
main GENET clock: priv->clk, but not for the Wake-on-LAN or EEE clock,
so let's just be consistent here.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohv_netvsc: Wait for sub-channels to be processed during probe
KY Srinivasan [Wed, 22 Jul 2015 18:42:32 +0000 (11:42 -0700)]
hv_netvsc: Wait for sub-channels to be processed during probe

The current code returns from probe without waiting for the proper handling
of subchannels that may be requested. If the netvsc driver were to be rapidly
loaded/unloaded, we can  trigger a panic as the unload will be tearing
down state that may not have been fully setup yet. We fix this issue by making
sure that we return from the probe call only after ensuring that the
sub-channel offers in flight are properly handled.

Reviewed-and-tested-by: Haiyang Zhang <haiyangz@microsoft.com
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4: Allow firmware flash, only if cxgb4 is the master driver
Hariprasad Shenai [Wed, 22 Jul 2015 17:24:50 +0000 (22:54 +0530)]
cxgb4: Allow firmware flash, only if cxgb4 is the master driver

Adapter can go for a toss, if cxgb4 is loaded as slave and we try to
upgrade the firmware. So add a check for the same before flashing
firmware using ethtool.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agovxlan: Use proper endian type for vni in vxlan[6]_xmit_skb
Thomas Graf [Wed, 22 Jul 2015 15:08:42 +0000 (17:08 +0200)]
vxlan: Use proper endian type for vni in vxlan[6]_xmit_skb

Silences the following sparse warnings:
drivers/net/vxlan.c:1818:21: warning: incorrect type in assignment (different base types)
drivers/net/vxlan.c:1818:21:    expected restricted __be32 [usertype] vx_vni
drivers/net/vxlan.c:1818:21:    got unsigned int [unsigned] [usertype] vni
drivers/net/vxlan.c:2014:58: warning: incorrect type in argument 11 (different base types)
drivers/net/vxlan.c:2014:58:    expected unsigned int [unsigned] [usertype] vni
drivers/net/vxlan.c:2014:58:    got restricted __be32 [usertype] <noident>

Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'tipc'
David S. Miller [Sun, 26 Jul 2015 23:31:50 +0000 (16:31 -0700)]
Merge branch 'tipc'

Jon Maloy says:

====================
tipc: clean up socket message reception

Despite recent improvements the message reception code in socket.c is
perceived as obscure and hard to follow, especially regarding the logics
for message rejection. With the commits in this series we try to remedy
this situation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: clean up socket layer message reception
Jon Paul Maloy [Wed, 22 Jul 2015 14:11:20 +0000 (10:11 -0400)]
tipc: clean up socket layer message reception

When a message is received in a socket, one of the call chains
tipc_sk_rcv()->tipc_sk_enqueue()->filter_rcv()(->tipc_sk_proto_rcv())
or
tipc_sk_backlog_rcv()->filter_rcv()(->tipc_sk_proto_rcv())
are followed. At each of these levels we may encounter situations
where the message may need to be rejected, or a new message
produced for transfer back to the sender. Despite recent
improvements, the current code for doing this is perceived
as awkward and hard to follow.

Leveraging the two previous commits in this series, we now
introduce a more uniform handling of such situations. We
let each of the functions in the chain itself produce/reverse
the message to be returned to the sender, but also perform the
actual forwarding. This simplifies the necessary logics within
each function.

Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: introduce new tipc_sk_respond() function
Jon Paul Maloy [Wed, 22 Jul 2015 14:11:19 +0000 (10:11 -0400)]
tipc: introduce new tipc_sk_respond() function

Currently, we use the code sequence

if (msg_reverse())
   tipc_link_xmit_skb()

at numerous locations in socket.c. The preparation of arguments
for these calls, as well as the sequence itself, makes the code
unecessarily complex.

In this commit, we introduce a new function, tipc_sk_respond(),
that performs this call combination. We also replace some, but not
yet all, of these explicit call sequences with calls to the new
function. Notably, we let the function tipc_sk_proto_rcv() use
the new function to directly send out PROBE_REPLY messages,
instead of deferring this to the calling tipc_sk_rcv() function,
as we do now.

Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: let function tipc_msg_reverse() expand header when needed
Jon Paul Maloy [Wed, 22 Jul 2015 14:11:18 +0000 (10:11 -0400)]
tipc: let function tipc_msg_reverse() expand header when needed

The shortest TIPC message header, for cluster local CONNECTED messages,
is 24 bytes long. With this format, the fields "dest_node" and
"orig_node" are optimized away, since they in reality are redundant
in this particular case.

However, the absence of these fields leads to code inconsistencies
that are difficult to handle in some cases, especially when we need
to reverse or reject messages at the socket layer.

In this commit, we concentrate the handling of the absent fields
to one place, by letting the function tipc_msg_reverse() reallocate
the buffer and expand the header to 32 bytes when necessary. This
means that the socket code now can assume that the two previously
absent fields are present in the header when a message needs to be
rejected. This opens up for some further simplifications of the
socket code.

Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Sat, 25 Jul 2015 07:14:46 +0000 (00:14 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-07-23

This series contains updates to e1000e, igb, ixgbevf, i40e and i40evf.

Emil extends the reporting of the RSS key and hash table by adding support
for x550 VFs.

Jia-Ju Bai fixes a QoS issue in e1000e where the error handling lacked a
call to pm_qos_remove_request() to cleanup the QoS request made in
e1000_open().

Todd updates igb to report unsupported for ethtool coalesce settings
that are not supported.  Also updated the driver to use the ARRAY_SIZE()
macro.

Carolyn fixes and refactors the dynamic ITR code for i40e and i40evf
which would never change dynamically.  So update the switch() statement
to have a default case and switch on "new_latency_range" versus the
current ITR setting.

Shannon cleans up i40e code, where there were un-needed goto's.  Also
clean up error status messages that were causing some confusion in
PHY and FCoE setup error reports.

Mitch updates the virtual channel interface to prepare for the x722 device
and other future devices, so that the VF driver can report what its
capable of supporting to the PF driver.  Updates the i40evf driver to
handle resets like Core or EMP resets, where the device is reinitialized
and the VF will not get the same VSI.

Jesse updates the i40e and i40evf driver to use the kernel BIT() and
BIT_ULL() macros.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobridge: Fix setting a flag in br_fill_ifvlaninfo_range().
Rosen, Rami [Wed, 22 Jul 2015 04:57:02 +0000 (07:57 +0300)]
bridge: Fix setting a flag in br_fill_ifvlaninfo_range().

This patch fixes setting of vinfo.flags in the br_fill_ifvlaninfo_range() method. The
assignment of vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN has no effect and is
unneeded, as vinfo.flags value is overriden by the  immediately following
vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END assignement.

Signed-off-by: Rami Rosen <rami.rosen@intel.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobe2net: support ndo_get_phys_port_id()
Sriharsha Basavapatna [Wed, 22 Jul 2015 05:45:12 +0000 (11:15 +0530)]
be2net: support ndo_get_phys_port_id()

Add be_get_phys_port_id() function to report physical port id. The port id
should be unique across different be2net devices in the system. We use the
chip serial number along with the physical port number for this.

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@avagotech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoi40e: use BIT and BIT_ULL macros
Jesse Brandeburg [Thu, 4 Jun 2015 20:24:02 +0000 (16:24 -0400)]
i40e: use BIT and BIT_ULL macros

Use macros for abstracting (1 << foo) to BIT(foo)
and (1ULL << foo64) to BIT_ULL(foo64) in order to match
better with kernel requirements.

NOTE: the adminq_cmd.h file was not modified on purpose because
of the dependency upon firmware for that file.

Change-ID: I73ee2e48c880d671948aad19bd53ca6b2ac558fc
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e: clean up error status messages
Shannon Nelson [Thu, 4 Jun 2015 20:24:01 +0000 (16:24 -0400)]
i40e: clean up error status messages

Clean up a little confusion in reporting error status in phy and fcoe
setup error reports by separating the return status from the AQ error.

Add two decoder functions to make this easier.

Change-ID: I960bcdeef3978a15fec1cdb5eff781d5cbae42fb
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e: provide correct API version to older VF drivers
Mitch Williams [Thu, 4 Jun 2015 20:24:00 +0000 (16:24 -0400)]
i40e: provide correct API version to older VF drivers

This driver fully supports VF drivers using both the 1.0 and 1.1
versions of the virtual channel API. However, VF drivers using
version 1.0 get upset if we provide them with a version other than
that, and refuse to play with us.

Correct this by checking the VFs API version at the time that we
store it off, and provide the correct version number back to the VF
so we can all get along.

Change-ID: I86dfe02e67b2bef336b4b49a1bb072f3e7229abc
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40evf: support virtual channel API version 1.1
Mitch Williams [Thu, 4 Jun 2015 20:23:59 +0000 (16:23 -0400)]
i40evf: support virtual channel API version 1.1

Store off the PF's API version, then use it to determine whether or not
to send it our capabilities. Change the version checking to allow for PF
drivers with lower API versions than our current version, so we can
still talk to PF drivers over the 1.0 API.

Change-ID: I8edc55d1229c7decf0ed3f285a63032694007c2e
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40evf: handle big resets
Mitch Williams [Thu, 4 Jun 2015 20:23:58 +0000 (16:23 -0400)]
i40evf: handle big resets

The most common type of reset that the VF will encounter is a PF reset
that cascades down into a VF reset for each VF. In this case, the VF
will always be assigned the same VSI and recovery is fairly simple.

However, in the case of 'bigger' resets, such as a Core or EMP reset,
when the device is reinitialized, it's probable that the VF will NOT get
the same VSI. When this happens, the VF will not be able to recover, as
it will continue to request resources for its original VSI.

Add an extra state to the admin queue state machine so that the driver
can re-request its configuration information at runtime. During reset
recovery, set this bit in the aq_required field, and fetch the (possibly
new) configuration information before attempting to bring the driver
back up. Since the driver doesn't know what kind of reset it has
encountered, this step is done even for a PF reset, but it doesn't hurt
anything - it just gets the same VSI back.

Change-ID: I915d59ffb40375215117362f4ac7a37811aba748
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e: support virtual channel API 1.1
Mitch Williams [Thu, 4 Jun 2015 20:23:57 +0000 (16:23 -0400)]
i40e: support virtual channel API 1.1

Store off the VF API version for use when figuring out the VF driver
capabilities. Add support for the VF driver handing its capabilities to
the PF driver and then use this information when sending VF resource
information back to the VF driver.

Change-ID: Ic00d0eeeb5b8118085e12f068ef857089a8f7c2d
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e/i40evf: add macros for virtual channel API version and device capability
Mitch Williams [Thu, 4 Jun 2015 20:23:56 +0000 (16:23 -0400)]
i40e/i40evf: add macros for virtual channel API version and device capability

Now that we've rolled the virtual channel API version to 1.1, add some
macros to test what version is being used by our partner in crime. For the
VF, add some macros to determine what our device capabilities are.

Change-ID: I79f6683d4c23bd76a8ad9fd492776fcc1208e1dc
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e: add VF capabilities to virtual channel interface
Mitch Williams [Thu, 4 Jun 2015 20:23:55 +0000 (16:23 -0400)]
i40e: add VF capabilities to virtual channel interface

To prepare for the changes coming up in the X722 device and future
devices, the virtual channel interface has to change slightly. The VF
driver can now report what its capable of supporting, which then informs
the PF driver when it sends the configuration information back to the
VF.

A 1.1 VF driver on a 1.0 PF driver should not send its capabilities.
Likewise, a 1.1 PF driver controlling a 1.0 VF driver should not expect
or depend upon receiving the VF capabilities.

All other aspects of the API are unchanged.

Change-ID: I530cc55f107edd1ee8bdf95830aa90b87854058a
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Anjali Singhai <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e: clean up unneeded gotos
Shannon Nelson [Mon, 1 Jun 2015 19:33:03 +0000 (19:33 +0000)]
i40e: clean up unneeded gotos

With a little work we can clean up some unnecessary logic jumping and
drop a variable.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Cc: Laurent Navet <laurent.navet@gmail.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoi40e/i40evf: Fix and refactor dynamic ITR code
Carolyn Wyborny [Wed, 10 Jun 2015 17:42:07 +0000 (13:42 -0400)]
i40e/i40evf: Fix and refactor dynamic ITR code

This patch changes the switch statement for dynamic interrupt throttling
and adds a default case. With this patch, we check the latency setting
instead of the current ITR settings and the included refactor improves
performance.

Without this patch, the ITR setting would never change dynamically, and
there was no default.

Change-ID: Idb5a8a14c7109ec47c90f6e94bd43baa17d7ee37
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoigb: bump version to igb-5.3.0
Todd Fujinaka [Wed, 20 May 2015 22:40:20 +0000 (15:40 -0700)]
igb: bump version to igb-5.3.0

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoigb: use ARRAY_SIZE to replace calculating sizeof(a)/sizeof(a[0])
Todd Fujinaka [Tue, 30 Jun 2015 22:16:55 +0000 (15:16 -0700)]
igb: use ARRAY_SIZE to replace calculating sizeof(a)/sizeof(a[0])

Use the ARRAY_SIZE macro rather than calculating sizeof(a)/sizeof(a[0]).
Also directly replace the code rather than using an unnecessary define.

Reported-by: Maninder Singh <maninder1.s@samsung.com>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoigb: report unsupported ethtool settings in set_coalesce
Todd Fujinaka [Thu, 4 Jun 2015 21:26:56 +0000 (14:26 -0700)]
igb: report unsupported ethtool settings in set_coalesce

There are many settings possible using ethtool -C/--coalesce, but not
all of them are supported in igb. Report failure when an unsupported
option is set.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
9 years agoe1000e: Cleanup qos request in error handling of e1000_open
Jia-Ju Bai [Thu, 4 Jun 2015 13:07:27 +0000 (21:07 +0800)]
e1000e: Cleanup qos request in error handling of e1000_open

The driver lacks pm_qos_remove_request in error handling (err_req_irq) of
e1000_open, and qos request inserted by pm_qos_add_request is not removed.
This patch add pm_qos_remove_request in error handling to fix it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>