GitHub/MotorolaMobilityLLC/kernel-slsi.git
8 years agonet: ethernet: mediatek: use dev_kfree_skb_any instead of dev_kfree_skb
Wei Yongjun [Thu, 20 Oct 2016 17:00:32 +0000 (17:00 +0000)]
net: ethernet: mediatek: use dev_kfree_skb_any instead of dev_kfree_skb

Replace dev_kfree_skb with dev_kfree_skb_any in mtk_start_xmit()
which can be called from hard irq context (netpoll) and from
other contexts. mtk_start_xmit() only frees skbs that it has
dropped.

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodwc_eth_qos: use dev_kfree_skb_any instead of dev_kfree_skb
Wei Yongjun [Thu, 20 Oct 2016 16:59:49 +0000 (16:59 +0000)]
dwc_eth_qos: use dev_kfree_skb_any instead of dev_kfree_skb

Replace dev_kfree_skb with dev_kfree_skb_any in dwceqos_start_xmit()
which can be called from hard irq context (netpoll) and from
other contexts. dwceqos_start_xmit() only frees skbs that it has
dropped.

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: aquantia: add PHY ID of AQR106 and AQR107
Shaohui Xie [Thu, 20 Oct 2016 08:30:31 +0000 (16:30 +0800)]
net: phy: aquantia: add PHY ID of AQR106 and AQR107

The AQR106 and AQR107 can use the existing driver.

Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: fec: drop check for clk==NULL before calling clk_*
Uwe Kleine-König [Thu, 20 Oct 2016 08:28:27 +0000 (10:28 +0200)]
net: fec: drop check for clk==NULL before calling clk_*

clk_prepare, clk_enable and their counterparts (at least the common clk
ones, but also most others) do check for the clk being NULL anyhow (and
return 0 then), so there is no gain when the caller checks, too.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: relax listening_hash operations
Eric Dumazet [Thu, 20 Oct 2016 04:24:58 +0000 (21:24 -0700)]
tcp: relax listening_hash operations

softirq handlers use RCU protection to lookup listeners,
and write operations all happen from process context.
We do not need to block BH for dump operations.

Also SYN_RECV since request sockets are stored in the ehash table :

 1) inet_diag_dump_icsk() no longer need to clear
    cb->args[3] and cb->args[4] that were used as cursors while
    iterating the old per listener hash table.

 2) Also factorize a test : No need to scan listening_hash[]
    if r->id.idiag_dport is not zero.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: smc91x: fix neponset breakage by pxa u16 writes
Robert Jarzmik [Wed, 19 Oct 2016 21:23:50 +0000 (23:23 +0200)]
net: smc91x: fix neponset breakage by pxa u16 writes

The patch isolating the u16 writes for pxa assumed all machine_is_*()
calls were removed, and therefore removed the mach-types.h include which
provided them.

Unfortunately 2 machine_is_*() remained in smc91x.c file including
smc91x.h from which the include was removed, triggering the error:
 drivers/net/ethernet/smsc/smc91x.c: In function ‘smc_drv_probe’:
 drivers/net/ethernet/smsc/smc91x.c:2380:2: error: implicit declaration
 of function ‘machine_is_assabet’
 [-Werror=implicit-function-declaration]
if (machine_is_assabet() && machine_has_neponset())

This adds back the wrongly removed include.

Fixes: d09d747ae4c2 ("net: smc91x: isolate u16 writes alignment workaround")
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoila: Fix tailroom allocation of lwtstate
Thomas Graf [Wed, 19 Oct 2016 21:16:39 +0000 (23:16 +0200)]
ila: Fix tailroom allocation of lwtstate

Tailroom is supposed to be of length sizeof(struct ila_lwt) but
sizeof(struct ila_params) is currently allocated.

This leads to the dst_cache and connected member of ila_lwt being
referenced out of bounds.

struct ila_lwt {
struct ila_params p;
struct dst_cache dst_cache;
u32 connected : 1;
};

Fixes: 65d7ab8de582 ("net: Identifier Locator Addressing module")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'macb-ethtool-ringparam'
David S. Miller [Wed, 19 Oct 2016 19:18:21 +0000 (15:18 -0400)]
Merge branch 'macb-ethtool-ringparam'

Zach Brown says:

====================
macb: Add ethtool get_ringparam and set_ringparam to cadence

There are use cases like RT that would benefit from being able to tune the
macb rx/tx ring sizes. The ethtool set_ringparam function is the standard way
of doing so.

The first patch changes the hardcoded tx/rx ring sizes to variables that are
set to a hardcoded default.

The second patch implements the get_ringparam and set_ringparam fucntions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: macb: Add ethtool get_ringparam and set_ringparam functionality
Zach Brown [Wed, 19 Oct 2016 14:56:58 +0000 (09:56 -0500)]
net: macb: Add ethtool get_ringparam and set_ringparam functionality

Some applications want to tune the size of the macb rx/tx ring buffers.
The ethtool set_ringparam function is the standard way of doing it.

Signed-off-by: Zach Brown <zach.brown@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: macb: Use variables with defaults for tx/rx ring sizes instead of hardcoded...
Zach Brown [Wed, 19 Oct 2016 14:56:57 +0000 (09:56 -0500)]
net: macb: Use variables with defaults for tx/rx ring sizes instead of hardcoded values

The macb driver hardcoded the tx/rx ring sizes. This made it
impossible to change the sizes at run time.

Add tx_ring_size, and rx_ring_size variables to macb object, which
are initilized with default vales during macb_init. Change all
references to RX_RING_SIZE and TX_RING_SIZE to their respective
replacements.

Signed-off-by: Zach Brown <zach.brown@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: arc_emac: use dev_kfree_skb_any instead of dev_kfree_skb
Wei Yongjun [Wed, 19 Oct 2016 13:47:52 +0000 (13:47 +0000)]
net: arc_emac: use dev_kfree_skb_any instead of dev_kfree_skb

Replace dev_kfree_skb with dev_kfree_skb_any in arc_emac_tx()
which can be called from hard irq context (netpoll) and from
other contexts. arc_emac_tx() only frees skbs that it has
dropped.

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'ovs-remove-unused'
David S. Miller [Wed, 19 Oct 2016 19:11:56 +0000 (15:11 -0400)]
Merge branch 'ovs-remove-unused'

Jiri Benc says:

====================
openvswitch: remove unused code

Removed unused functions and unnecessary EXPORT_SYMBOLs from openvswitch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoopenvswitch: remove unnecessary EXPORT_SYMBOLs
Jiri Benc [Wed, 19 Oct 2016 09:26:37 +0000 (11:26 +0200)]
openvswitch: remove unnecessary EXPORT_SYMBOLs

Some symbols exported to other modules are really used only by
openvswitch.ko. Remove the exports.

Tested by loading all 4 openvswitch modules, nothing breaks.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoopenvswitch: remove unused functions
Jiri Benc [Wed, 19 Oct 2016 09:26:36 +0000 (11:26 +0200)]
openvswitch: remove unused functions

ovs_vport_deferred_free is not used anywhere. It's the only caller of
free_vport_rcu thus this one can be removed, too.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: Detect identical PTR_TO_MAP_VALUE_OR_NULL registers
Thomas Graf [Tue, 18 Oct 2016 17:51:19 +0000 (19:51 +0200)]
bpf: Detect identical PTR_TO_MAP_VALUE_OR_NULL registers

A BPF program is required to check the return register of a
map_elem_lookup() call before accessing memory. The verifier keeps
track of this by converting the type of the result register from
PTR_TO_MAP_VALUE_OR_NULL to PTR_TO_MAP_VALUE after a conditional
jump ensures safety. This check is currently exclusively performed
for the result register 0.

In the event the compiler reorders instructions, BPF_MOV64_REG
instructions may be moved before the conditional jump which causes
them to keep their type PTR_TO_MAP_VALUE_OR_NULL to which the
verifier objects when the register is accessed:

0: (b7) r1 = 10
1: (7b) *(u64 *)(r10 -8) = r1
2: (bf) r2 = r10
3: (07) r2 += -8
4: (18) r1 = 0x59c00000
6: (85) call 1
7: (bf) r4 = r0
8: (15) if r0 == 0x0 goto pc+1
 R0=map_value(ks=8,vs=8) R4=map_value_or_null(ks=8,vs=8) R10=fp
9: (7a) *(u64 *)(r4 +0) = 0
R4 invalid mem access 'map_value_or_null'

This commit extends the verifier to keep track of all identical
PTR_TO_MAP_VALUE_OR_NULL registers after a map_elem_lookup() by
assigning them an ID and then marking them all when the conditional
jump is observed.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: fs_enet: Use net_device_stats from struct net_device
Tobias Klauser [Wed, 19 Oct 2016 09:24:57 +0000 (11:24 +0200)]
net: fs_enet: Use net_device_stats from struct net_device

Instead of using a private copy of struct net_device_stats in struct
fs_enet_private, use stats from struct net_device. Also remove the now
unnecessary .ndo_get_stats function.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Remove useless set memory to zero use memset()
Wei Yongjun [Tue, 18 Oct 2016 15:54:50 +0000 (15:54 +0000)]
qed: Remove useless set memory to zero use memset()

The memory return by kzalloc() has already be set to zero, so
remove useless memset(0).

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: mv88e6xxx: fix non static symbol warning
Wei Yongjun [Tue, 18 Oct 2016 15:53:37 +0000 (15:53 +0000)]
net: dsa: mv88e6xxx: fix non static symbol warning

Fixes the following sparse warning:

drivers/net/dsa/mv88e6xxx/chip.c:2866:5: warning:
 symbol 'mv88e6xxx_g1_set_switch_mac' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agor8152: add new products of Lenovo
hayeswang [Tue, 18 Oct 2016 03:41:48 +0000 (11:41 +0800)]
r8152: add new products of Lenovo

Add the following four products of Lenovo and sort the order of the list.

VID PID
0x17ef 0x3062
0x17ef 0x3069
0x17ef 0x720c
0x17ef 0x7214

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: vlan: Use sizeof instead of literal number
Gao Feng [Tue, 18 Oct 2016 00:57:50 +0000 (08:57 +0800)]
net: vlan: Use sizeof instead of literal number

Use sizeof variable instead of literal number to enhance the readability.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'smc91x-dt'
David S. Miller [Tue, 18 Oct 2016 18:14:22 +0000 (14:14 -0400)]
Merge branch 'smc91x-dt'

Robert Jarzmik says:

====================
support smc91x on mainstone and devicetree

This series aims at bringing support to mainstone board on a
device-tree based build, as what is already in place for legacy
mainstone.

The bulk of the mainstone "specific" behavior is that a u16 write
doesn't work on a address of the form 4*n + 2, while it works on 4*n.

The legacy workaround was in SMC_outw(), with calls to
machine_is_mainstone(). These calls don't work with a pxa27x-dt
machine type, which is used when a generic device-tree pxa27x machine
is used to boot the mainstone board.

Therefore, this series enables the smc91c111 adapter of the mainstone
board to work on a device-tree build, exaclty as it's been working for
years with the legacy arch/arm/mach-pxa/mainstone.c definition.

As a sum up, this extends an existing mechanism to device-tree based
pxa platforms.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: smsc91x: add u16 workaround for pxa platforms
Robert Jarzmik [Mon, 17 Oct 2016 19:45:32 +0000 (21:45 +0200)]
net: smsc91x: add u16 workaround for pxa platforms

Add a workaround for mainstone, idp and stargate2 boards, for u16 writes
which must be aligned on 32 bits addresses.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Jeremy Linton <jeremy.linton@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: smc91x: take into account half-word workaround
Robert Jarzmik [Mon, 17 Oct 2016 19:45:31 +0000 (21:45 +0200)]
net: smc91x: take into account half-word workaround

For device-tree builds, platforms such as mainstone, idp and stargate2
must have their u16 writes all aligned on 32 bit boundaries. This is
already enabled in platform data builds, and this patch adds it to
device-tree builds.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: smc91x: isolate u16 writes alignment workaround
Robert Jarzmik [Mon, 17 Oct 2016 19:45:30 +0000 (21:45 +0200)]
net: smc91x: isolate u16 writes alignment workaround

Writes to u16 has a special handling on 3 PXA platforms, where the
hardware wiring forces these writes to be u32 aligned.

This patch isolates this handling for PXA platforms as before, but
enables this "workaround" to be set up dynamically, which will be the
case in device-tree build types.

This patch was tested on 2 PXA platforms : mainstone, which relies on
the workaround, and lubbock, which doesn't.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoARM: pxa: enhance smc91x platform data
Robert Jarzmik [Mon, 17 Oct 2016 19:45:29 +0000 (21:45 +0200)]
ARM: pxa: enhance smc91x platform data

Instead of having the smc91x driver relying on machine_is_*() calls,
provide this data through platform data, ie. idp, mainstone and
stargate.

This way, the driver doesn't need anymore machine_is_*() calls, which
wouldn't work anymore with a device-tree build.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/sfc: use core min/max MTU checking
Bert Kenward [Tue, 18 Oct 2016 16:47:45 +0000 (17:47 +0100)]
ethernet/sfc: use core min/max MTU checking

Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking")
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'phy-led-triggers'
David S. Miller [Tue, 18 Oct 2016 15:56:31 +0000 (11:56 -0400)]
Merge branch 'phy-led-triggers'

Zach Brown says:

====================
Add support for led triggers on phy link state change

Fix skge driver that declared enum contants that conflicted with enum
constants in linux/leds.h

Create function that encapsulates actions taken during the adjust phy link step
of phy state changes.

Create function that provides list of speeds currently supported by the phy.

Add support for led triggers on phy link state changes by adding
a config option. When set the config option will create a set of led triggers
for each phy device. Users can use the led triggers to represent link state
changes on the phy.

v2:
 * New patch that creates phy_adjust_link function to encapsulate actions taken
   when adjusting phy link during phy state changes
 * led trigger speed strings changed to match existing phy speed strings
 * New function that maps speeds to led triggers
 * Replace magic constants with definitions when declaring trigger name
   buffer and number of triggers.
v3:
 * Changed LED_ON to LED_REG_ON in skge driver to avoid possible future
   conflict and improve consistency.
 * Dropped rtl8712 patch that was accepted separately.
v4:
 * tweaked commit message
v5
 * Changed commit message to explain relationship between the new triggers and
   leds driven by phys.
 * Added new patch that creates phy_supported_speeds function.
 * Moved phy_leds_triggers_register and phy_leds_triggers_unregister to
   phy_attach and phy_detach respectively. This change is so the
   phydev->supported field will be filled by the time the triggers are
   registered.
 * Changed hardcoded list of triggers to dynamic list determined by speeds
   return by phy_supported_speeds.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: leds: add support for led triggers on phy link state change
Zach Brown [Mon, 17 Oct 2016 15:49:55 +0000 (10:49 -0500)]
net: phy: leds: add support for led triggers on phy link state change

Create an option CONFIG_LED_TRIGGER_PHY (default n), which will create a
set of led triggers for each instantiated PHY device. There is one LED
trigger per link-speed, per-phy.
The triggers are registered during phy_attach and unregistered during
phy_detach.

This allows for a user to configure their system to allow a set of LEDs
not controlled by the phy to represent link state changes on the phy.
LEDS controlled by the phy are unaffected.

For example, we have a board where some of the leds in the
RJ45 socket are controlled by the phy, but others are not. Using the
triggers provided by this patch the leds not controlled by the phy can
be configured to show the current speed of the ethernet connection. The
leds controlled by the phy are unaffected.

Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Signed-off-by: Zach Brown <zach.brown@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: Create phy_supported_speeds function which lists speeds currently supported...
Zach Brown [Mon, 17 Oct 2016 15:49:54 +0000 (10:49 -0500)]
net: phy: Create phy_supported_speeds function which lists speeds currently supported by a phydevice

phy_supported_speeds provides a means to get a list of all the speeds a
phy device currently supports.

Signed-off-by: Zach Brown <zach.brown@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: Encapsulate actions performed during link state changes into function phy_a...
Zach Brown [Mon, 17 Oct 2016 15:49:53 +0000 (10:49 -0500)]
net: phy: Encapsulate actions performed during link state changes into function phy_adjust_link

During phy state machine state transitions some set of actions should
occur whenever the link state changes. These actions should be
encapsulated into a single function

This patch adds the phy_adjust_link function, which is called whenever
phydev->adjust_link would have been called before. Actions that should
occur whenever the phy link is adjusted can now be added to the
phy_adjust_link function.

Signed-off-by: Zach Brown <zach.brown@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoskge: Rename LED_OFF and LED_ON in marvel skge driver to avoid conflicts with leds...
Zach Brown [Mon, 17 Oct 2016 15:49:52 +0000 (10:49 -0500)]
skge: Rename LED_OFF and LED_ON in marvel skge driver to avoid conflicts with leds namespace

Adding led support for phy causes namespace conflicts for some
phy drivers.

The marvel skge driver declared an enum for representing the states of
Link LED Register. The enum contained constant LED_OFF which conflicted
with declartation found in linux/leds.h.
LED_OFF changed to LED_REG_OFF
Also changed LED_ON to LED_REG_ON to avoid possible future conflict and
for consistency.

Signed-off-by: Zach Brown <zach.brown@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'netdev-adjacency'
David S. Miller [Tue, 18 Oct 2016 15:45:01 +0000 (11:45 -0400)]
Merge branch 'netdev-adjacency'

David Ahern says:

====================
net: Fix netdev adjacency tracking

The netdev adjacency tracking is failing to create proper dependencies
for some topologies. For example this topology

        +--------+
        |  myvrf |
        +--------+
          |    |
          |  +---------+
          |  | macvlan |
          |  +---------+
          |    |
      +----------+
      |  bridge  |
      +----------+
          |
      +--------+
      | bond1  |
      +--------+
          |
      +--------+
      |  eth3  |
      +--------+

hits 1 of 2 problems depending on the order of enslavement. The base set of
commands for both cases:

    ip link add bond1 type bond
    ip link set bond1 up
    ip link set eth3 down
    ip link set eth3 master bond1
    ip link set eth3 up

    ip link add bridge type bridge
    ip link set bridge up
    ip link add macvlan link bridge type macvlan
    ip link set macvlan up

    ip link add myvrf type vrf table 1234
    ip link set myvrf up

    ip link set bridge master myvrf

Case 1 enslave macvlan to the vrf before enslaving the bond to the bridge:

    ip link set macvlan master myvrf
    ip link set bond1 master bridge

Attempts to delete the VRF:
    ip link delete myvrf

trigger the BUG in __netdev_adjacent_dev_remove:

[  587.405260] tried to remove device eth3 from myvrf
[  587.407269] ------------[ cut here ]------------
[  587.408918] kernel BUG at /home/dsa/kernel.git/net/core/dev.c:5661!
[  587.411113] invalid opcode: 0000 [#1] SMP
[  587.412454] Modules linked in: macvlan bridge stp llc bonding vrf
[  587.414765] CPU: 0 PID: 726 Comm: ip Not tainted 4.8.0+ #109
[  587.416766] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[  587.420241] task: ffff88013ab6eec0 task.stack: ffffc90000628000
[  587.422163] RIP: 0010:[<ffffffff813cef03>]  [<ffffffff813cef03>] __netdev_adjacent_dev_remove+0x40/0x12c
...
[  587.446053] Call Trace:
[  587.446424]  [<ffffffff813d1542>] __netdev_adjacent_dev_unlink+0x20/0x3c
[  587.447390]  [<ffffffff813d16a3>] netdev_upper_dev_unlink+0xfa/0x15e
[  587.448297]  [<ffffffffa00003a3>] vrf_del_slave+0x13/0x2a [vrf]
[  587.449153]  [<ffffffffa00004a4>] vrf_dev_uninit+0xea/0x114 [vrf]
[  587.450036]  [<ffffffff813d19b0>] rollback_registered_many+0x22b/0x2da
[  587.450974]  [<ffffffff813d1aac>] unregister_netdevice_many+0x17/0x48
[  587.451903]  [<ffffffff813de444>] rtnl_delete_link+0x3c/0x43
[  587.452719]  [<ffffffff813dedcd>] rtnl_dellink+0x180/0x194

When the BUG is converted to a WARN_ON it shows 4 missing adjacencies:
  eth3 - myvrf, mvrf - eth3, bond1 - myvrf and myvrf - bond1

All of those are because the __netdev_upper_dev_link function does not
properly link macvlan lower devices to myvrf when it is enslaved.

The second case just flips the ordering of the enslavements:
    ip link set bond1 master bridge
    ip link set macvlan master myvrf

Then run:
    ip link delete bond1
    ip link delete myvrf

The vrf delete command hangs because myvrf has a reference that has not
been released. In this case the removal code does not account for 2 paths
between eth3 and myvrf - one from bridge to vrf and the other through the
macvlan.

Rather than try to maintain a linked list of all upper and lower devices
per netdevice, only track the direct neighbors. The remaining stack can
be determined by recursively walking the neighbors.

The existing netdev_for_each_all_upper_dev_rcu,
netdev_for_each_all_lower_dev and netdev_for_each_all_lower_dev_rcu macros
are replaced with APIs that walk the upper and lower device lists. The
new APIs take a callback function and a data arg that is passed to the
callback for each device in the list. Drivers using the old macros are
converted in separate patches to make it easier on reviewers. It is an
API conversion only; no functional change is intended.

v3
- address Stephen's comment to simplify logic and remove typecasts

v2
- fixed bond0 references in cover-letter
- fixed definition of netdev_next_lower_dev_rcu to mirror the upper_dev
  version.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dev: Improve debug statements for adjacency tracking
David Ahern [Tue, 18 Oct 2016 02:15:53 +0000 (19:15 -0700)]
net: dev: Improve debug statements for adjacency tracking

Adjacency code only has debugs for the insert case. Add debugs for
the remove path and make both consistently worded to make it easier
to follow the insert and removal with reference counts.

In addition, change the BUG to a WARN_ON. A missing adjacency at
removal time is not cause for a panic.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Add warning if any lower device is still in adjacency list
David Ahern [Tue, 18 Oct 2016 02:15:52 +0000 (19:15 -0700)]
net: Add warning if any lower device is still in adjacency list

Lower list should be empty just like upper.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Remove all_adj_list and its references
David Ahern [Tue, 18 Oct 2016 02:15:51 +0000 (19:15 -0700)]
net: Remove all_adj_list and its references

Only direct adjacencies are maintained. All upper or lower devices can
be learned via the new walk API which recursively walks the adj_list for
upper devices or lower devices.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agorocker: Flip to the new dev walk API
David Ahern [Tue, 18 Oct 2016 02:15:50 +0000 (19:15 -0700)]
rocker: Flip to the new dev walk API

Convert rocker to the new dev walk API. This is just a code conversion;
no functional change is intended.

v2
- removed typecast of data

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: Flip to the new dev walk API
David Ahern [Tue, 18 Oct 2016 02:15:49 +0000 (19:15 -0700)]
mlxsw: Flip to the new dev walk API

Convert mlxsw users to new dev walk API. This is just a code conversion;
no functional change is intended.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoixgbe: Flip to the new dev walk API
David Ahern [Tue, 18 Oct 2016 02:15:48 +0000 (19:15 -0700)]
ixgbe: Flip to the new dev walk API

Convert ixgbe users to new dev walk API. This is just a code conversion;
no functional change is intended.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoIB/ipoib: Flip to new dev walk API
David Ahern [Tue, 18 Oct 2016 02:15:47 +0000 (19:15 -0700)]
IB/ipoib: Flip to new dev walk API

Convert ipoib_get_net_dev_match_addr to the new upper device walk API.
This is just a code conversion; no functional change is intended.

v2
- removed typecast of data

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoIB/core: Flip to the new dev walk API
David Ahern [Tue, 18 Oct 2016 02:15:46 +0000 (19:15 -0700)]
IB/core: Flip to the new dev walk API

Convert rdma_is_upper_dev_rcu, handle_netdev_upper and
ipoib_get_net_dev_match_addr to the new upper device walk API.
This is just a code conversion; no functional change is intended.

v2
- removed typecast of data

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: bonding: Flip to the new dev walk API
David Ahern [Tue, 18 Oct 2016 02:15:45 +0000 (19:15 -0700)]
net: bonding: Flip to the new dev walk API

Convert alb_send_learning_packets and bond_has_this_ip to use the new
netdev_walk_all_upper_dev_rcu API. In both cases this is just a code
conversion; no functional change is intended.

v2
- removed typecast of data and simplified bond_upper_dev_walk

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Introduce new api for walking upper and lower devices
David Ahern [Tue, 18 Oct 2016 02:15:44 +0000 (19:15 -0700)]
net: Introduce new api for walking upper and lower devices

This patch introduces netdev_walk_all_upper_dev_rcu,
netdev_walk_all_lower_dev and netdev_walk_all_lower_dev_rcu. These
functions recursively walk the adj_list of devices to determine all upper
and lower devices.

The functions take a callback function that is invoked for each device
in the list. If the callback returns non-0, the walk is terminated and
the functions return that code back to callers.

v3
- simplified netdev_has_upper_dev_all_rcu and __netdev_has_upper_dev and
  removed typecast as suggested by Stephen

v2
- fixed definition of netdev_next_lower_dev_rcu to mirror the upper_dev
  version.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Remove refnr arg when inserting link adjacencies
David Ahern [Tue, 18 Oct 2016 02:15:43 +0000 (19:15 -0700)]
net: Remove refnr arg when inserting link adjacencies

Commit 93409033ae65 ("net: Add netdev all_adj_list refcnt propagation to
fix panic") propagated the refnr to insert and remove functions tracking
the netdev adjacency graph. However, for the insert path the refnr can
only be 1. Accordingly, remove the refnr argument to make that clear.
ie., the refnr arg in 93409033ae65 was only needed for the remove path.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'bpf-selftests'
David S. Miller [Tue, 18 Oct 2016 15:35:55 +0000 (11:35 -0400)]
Merge branch 'bpf-selftests'

Daniel Borkmann says:

====================
Move to BPF selftests

This set improves the test_verifier and test_maps suite and moves
it over to a new BPF selftest directory, so we can keep improving
it under kernel selftest umbrella. This also integrates a test
script for checking test_bpf.ko under various JIT options.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: add initial suite for selftests
Daniel Borkmann [Mon, 17 Oct 2016 12:28:36 +0000 (14:28 +0200)]
bpf: add initial suite for selftests

Add a start of a test suite for kernel selftests. This moves test_verifier
and test_maps over to tools/testing/selftests/bpf/ along with various
code improvements and also adds a script for invoking test_bpf module.
The test suite can simply be run via selftest framework, f.e.:

  # cd tools/testing/selftests/bpf/
  # make
  # make run_tests

Both test_verifier and test_maps were kind of misplaced in samples/bpf/
directory and we were looking into adding them to selftests for a while
now, so it can be picked up by kbuild bot et al and hopefully also get
more exposure and thus new test case additions.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: add various tests around spill/fill of regs
Daniel Borkmann [Mon, 17 Oct 2016 12:28:35 +0000 (14:28 +0200)]
bpf: add various tests around spill/fill of regs

Add several spill/fill tests. Besides others, one that performs xadd
on the spilled register, one ldx/stx test where different types are
spilled from two branches and read out from common path. Verfier does
handle all correctly.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'ethernet-use-core-min-max-mtu'
David S. Miller [Tue, 18 Oct 2016 15:34:22 +0000 (11:34 -0400)]
Merge branch 'ethernet-use-core-min-max-mtu'

Jarod Wilson says:

====================
ethernet: use core min/max MTU checking

Now that the network stack core min/max MTU checking infrastructure is in
place, time to start making drivers use it. We'll start with the easiest
ones, the ethernet drivers, split roughly by vendor, with a catch-all
patch at the end.

For the most part, every patch does the same essential thing: removes the
MTU range checking from the drivers' ndo_change_mtu function, puts those
ranges into the core net_device min_mtu and max_mtu fields, and where
possible, removes ndo_change_mtu functions entirely.

These patches have all been built through the 0-day build infrastructure
provided by Intel, on top of net-next as of October 17.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:17 +0000 (15:54 -0400)]
ethernet: use core min/max MTU checking

et131x: min_mtu 64, max_mtu 9216

altera_tse: min_mtu 64, max_mtu 1500

amd8111e: min_mtu 60, max_mtu 9000

bnad: min_mtu 46, max_mtu 9000

macb: min_mtu 68, max_mtu 1500 or 10240 depending on hardware capability

xgmac: min_mtu 46, max_mtu 9000

cxgb2: min_mtu 68, max_mtu 9582 (pm3393) or 9600 (vsc7326)

enic: min_mtu 68, max_mtu 9000

gianfar: min_mtu 50, max_mu 9586

hns_enet: min_mtu 68, max_mtu 9578 (v1) or 9706 (v2)

ksz884x: min_mtu 60, max_mtu 1894

myri10ge: min_mtu 68, max_mtu 9000

natsemi: min_mtu 64, max_mtu 2024

nfp: min_mtu 68, max_mtu hardware-specific

forcedeth: min_mtu 64, max_mtu 1500 or 9100, depending on hardware

pch_gbe: min_mtu 46, max_mtu 10300

pasemi_mac: min_mtu 64, max_mtu 9000

qcaspi: min_mtu 46, max_mtu 1500
- remove qcaspi_netdev_change_mtu as it is now redundant

rocker: min_mtu 68, max_mtu 9000

sxgbe: min_mtu 68, max_mtu 9000

stmmac: min_mtu 46, max_mtu depends on hardware

tehuti: min_mtu 60, max_mtu 16384
- driver had no max mtu checking, but product docs say 16k jumbo packets
  are supported by the hardware

netcp: min_mtu 68, max_mtu 9486
- remove netcp_ndo_change_mtu as it is now redundant

via-velocity: min_mtu 64, max_mtu 9000

octeon: min_mtu 46, max_mtu 65370

CC: netdev@vger.kernel.org
CC: Mark Einon <mark.einon@gmail.com>
CC: Vince Bridgers <vbridger@opensource.altera.com>
CC: Rasesh Mody <rasesh.mody@qlogic.com>
CC: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: Santosh Raspatur <santosh@chelsio.com>
CC: Hariprasad S <hariprasad@chelsio.com>
CC: Christian Benvenuti <benve@cisco.com>
CC: Sujith Sankar <ssujith@cisco.com>
CC: Govindarajulu Varadarajan <_govind@gmx.com>
CC: Neel Patel <neepatel@cisco.com>
CC: Claudiu Manoil <claudiu.manoil@freescale.com>
CC: Yisen Zhuang <yisen.zhuang@huawei.com>
CC: Salil Mehta <salil.mehta@huawei.com>
CC: Hyong-Youb Kim <hykim@myri.com>
CC: Jakub Kicinski <jakub.kicinski@netronome.com>
CC: Olof Johansson <olof@lixom.net>
CC: Jiri Pirko <jiri@resnulli.us>
CC: Byungho An <bh74.an@samsung.com>
CC: Girish K S <ks.giri@samsung.com>
CC: Vipul Pandya <vipul.pandya@samsung.com>
CC: Giuseppe Cavallaro <peppe.cavallaro@st.com>
CC: Alexandre Torgue <alexandre.torgue@st.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Wingman Kwok <w-kwok2@ti.com>
CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/toshiba: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:16 +0000 (15:54 -0400)]
ethernet/toshiba: use core min/max MTU checking

gelic_net: min_mtu 64, max_mtu 1518
- remove gelic_net_change_mtu now that it is redundant

spidernet: min_Mtu 64, max_mtu 2294
- remove spiter_net_change_mtu now that it is redundant

CC: netdev@vger.kernel.org
CC: Geoff Levand <geoff@infradead.org>
CC: Ishizaki Kou <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/tile: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:15 +0000 (15:54 -0400)]
ethernet/tile: use core min/max MTU checking

tilegx: min_mtu 68, max_mtu 1500 or 9000, depending on modparam
- remove tile_net_change_mtu now that it is fully redundant

tilepro: min_mtu 68, max_mtu 1500
- hardware supports jumbo packets up to 10226, but it's not implemented or
  tested yet, according to code comments

CC: netdev@vger.kernel.org
CC: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/ibm: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:14 +0000 (15:54 -0400)]
ethernet/ibm: use core min/max MTU checking

ehea: min_mtu 68, max_mtu 9022
- remove ehea_change_mtu, it's now redundant

emac: min_mtu 46, max_mtu 1500 or whatever gets read from OF

CC: netdev@vger.kernel.org
CC: Douglas Miller <dougmill@linux.vnet.ibm.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/cavium: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:13 +0000 (15:54 -0400)]
ethernet/cavium: use core min/max MTU checking

liquidio: min_mtu 68, max_mtu 16000

thunder: min_mtu 64, max_mtu 9200

CC: netdev@vger.kernel.org
CC: Sunil Goutham <sgoutham@cavium.com>
CC: Robert Richter <rric@kernel.org>
CC: Derek Chickles <derek.chickles@caviumnetworks.com>
CC: Satanand Burla <satananda.burla@caviumnetworks.com>
CC: Felix Manlunas <felix.manlunas@caviumnetworks.com>
CC: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/neterion: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:12 +0000 (15:54 -0400)]
ethernet/neterion: use core min/max MTU checking

s2io: min_mtu 46, max_mtu 9600

vxge: min_mtu 68, max_mtu 9600

CC: netdev@vger.kernel.org
CC: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/dlink: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:11 +0000 (15:54 -0400)]
ethernet/dlink: use core min/max MTU checking

dl2k: min_mtu 68, max_mtu 1536 or 8000, depending on hardware
- Removed change_mtu, does nothing productive anymore

sundance: min_mtu 68, max_mtu 8191

CC: netdev@vger.kernel.org
CC: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/sun: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:10 +0000 (15:54 -0400)]
ethernet/sun: use core min/max MTU checking

cassini: min_mtu 60, max_mtu 9000

niu: min_mtu 68, max_mtu 9216

sungem: min_mtu 68, max_mtu 1500 (comments say jumbo mode is broken)

sunvnet: min_mtu 68, max_mtu 65535
- removed sunvnet_change_mut_common as it does nothing now

CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/realtek: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:09 +0000 (15:54 -0400)]
ethernet/realtek: use core min/max MTU checking

8139cp: min_mtu 60, max_mtu 4096

8139too: min_mtu 68, max_mtu 1770

r8169: min_mtu 60, max_mtu depends on chipset, 1500 to 9k-ish

CC: netdev@vger.kernel.org
CC: Realtek linux nic maintainers <nic_swsd@realtek.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/qlogic: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:08 +0000 (15:54 -0400)]
ethernet/qlogic: use core min/max MTU checking

qede: min_mtu 46, max_mtu 9600
- Put define for max in qede.h

qlcnic: min_mtu 68, max_mtu 9600

CC: netdev@vger.kernel.org
CC Dept-GELinuxNICDev@qlogic.com
CC: Yuval Mintz <Yuval.Mintz@qlogic.com>
CC: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/mellanox: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:07 +0000 (15:54 -0400)]
ethernet/mellanox: use core min/max MTU checking

mlx4: min_mtu 46, max_mtu depends on hardware

mlx5: min_mtu 68, max_mtu depends on hardware

CC: netdev@vger.kernel.org
CC: Tariq Toukan <tariqt@mellanox.com>
CC: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/marvell: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:06 +0000 (15:54 -0400)]
ethernet/marvell: use core min/max MTU checking

mvneta: min_mtu 68, max_mtu 9676
- mtu validation routine mostly did range check, merge back into
  mvneta_change_mtu for simplicity

mvpp2: min_mtu 68, max_mtu 9676
- mtu validation routine mostly did range check, merge back into
  mvpp2_change_mtu for simplicity

pxa168_eth: min_mtu 68, max_mtu 9500

skge: min_mtu 60, max_mtu 9000

sky2: min_mtu 68, max_mtu 1500 or 9000, depending on hw

CC: netdev@vger.kernel.org
CC: Mirko Lindner <mlindner@marvell.com>
CC: Stephen Hemminger <stephen@networkplumber.org>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/intel: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:05 +0000 (15:54 -0400)]
ethernet/intel: use core min/max MTU checking

e100: min_mtu 68, max_mtu 1500
- remove e100_change_mtu entirely, is identical to old eth_change_mtu,
  and no longer serves a purpose. No need to set min_mtu or max_mtu
  explicitly, as ether_setup() will already set them to 68 and 1500.

e1000: min_mtu 46, max_mtu 16110

e1000e: min_mtu 68, max_mtu varies based on adapter

fm10k: min_mtu 68, max_mtu 15342
- remove fm10k_change_mtu entirely, does nothing now

i40e: min_mtu 68, max_mtu 9706

i40evf: min_mtu 68, max_mtu 9706

igb: min_mtu 68, max_mtu 9216
- There are two different "max" frame sizes claimed and both checked in
  the driver, the larger value wasn't relevant though, so I've set max_mtu
  to the smaller of the two values here to retain identical behavior.

igbvf: min_mtu 68, max_mtu 9216
- Same issue as igb duplicated

ixgb: min_mtu 68, max_mtu 16114
- Also remove pointless old == new check, as that's done in dev_set_mtu

ixgbe: min_mtu 68, max_mtu 9710

ixgbevf: min_mtu 68, max_mtu dependent on hardware/firmware
- Some hw can only handle up to max_mtu 1504 on a vf, others 9710

CC: netdev@vger.kernel.org
CC: intel-wired-lan@lists.osuosl.org
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/broadcom: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:04 +0000 (15:54 -0400)]
ethernet/broadcom: use core min/max MTU checking

tg3: min_mtu 60, max_mtu 9000/1500

bnxt: min_mtu 60, max_mtu 9000

bnx2x: min_mtu 46, max_mtu 9600
- Fix up ETH_OVREHEAD -> ETH_OVERHEAD while we're in here, remove
  duplicated defines from bnx2x_link.c.

bnx2: min_mtu 46, max_mtu 9000
- Use more standard ETH_* defines while we're at it.

bcm63xx_enet: min_mtu 46, max_mtu 2028
- compute_hw_mtu was made largely pointless, and thus merged back into
  bcm_enet_change_mtu.

b44: min_mtu 60, max_mtu 1500

CC: netdev@vger.kernel.org
CC: Michael Chan <michael.chan@broadcom.com>
CC: Sony Chacko <sony.chacko@qlogic.com>
CC: Ariel Elior <ariel.elior@qlogic.com>
CC: Dept-HSGLinuxNICDev@qlogic.com
CC: Siva Reddy Kallam <siva.kallam@broadcom.com>
CC: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoethernet/atheros: use core min/max MTU checking
Jarod Wilson [Mon, 17 Oct 2016 19:54:03 +0000 (15:54 -0400)]
ethernet/atheros: use core min/max MTU checking

atl2: min_mtu 40, max_mtu 1504

- Remove a few redundant defines that already have equivalents in
  if_ether.h.

atl1: min_mtu 42, max_mtu 10218

atl1e: min_mtu 42, max_mtu 8170

atl1c: min_mtu 42, max_mtu 6122/1500

- GbE hardware gets a max_mtu of 6122, slower hardware gets 1500.

alx: min_mtu 34, max_mtu 9256

- Not so sure that minimum MTU number is really what was intended, but
  that's what the math actually makes it out to be, due to max_frame
  manipulations and comparison in alx_change_mtu, rather than just
  comparing new_mtu. (I think 68 was the intended min_mtu value).

CC: netdev@vger.kernel.org
CC: Jay Cliburn <jcliburn@gmail.com>
CC: Chris Snook <chris.snook@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'dp83867-impedance-control'
David S. Miller [Tue, 18 Oct 2016 14:42:17 +0000 (10:42 -0400)]
Merge branch 'dp83867-impedance-control'

Mugunthan V N says:

====================
add support for impedance control for TI dp83867 phy and fix 2nd ethernet on dra72 rev C evm

Add support for configurable impedance control for TI dp83867
phy via devicetree. More documentation in [1].
CPSW second ethernet is not working, fix it by enabling
impedance configuration on the phy.

Verified the patch on DRA72 Rev C evm, logs at [2]. Also pushed
a branch [3] for others to test.

Changes from v3:
* Fixup change log text and no code changes.

Changes from v2:
* Fixed a typo in dts and driver.

Changes from initial version:
* As per Sekhar's comment, instead of passing impedance values,
  change to max and min impedance from DT
* Adopted phy_read_mmd_indirect() to cunnrent implementation.
* Corrected the phy delay timings to the optimal value.

[1] - http://www.ti.com/lit/ds/symlink/dp83867ir.pdf
[2] - http://pastebin.ubuntu.com/23343139/
[3] - git://git.ti.com/~mugunthanvnm/ti-linux-kernel/linux.git dp83867-v4
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoARM: dts: dra72-evm-revc: fix correct phy delay
Mugunthan V N [Tue, 18 Oct 2016 11:20:20 +0000 (16:50 +0530)]
ARM: dts: dra72-evm-revc: fix correct phy delay

The current delay settings of the phy are not the optimal value,
fix it with correct values.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoARM: dts: dra72-evm-revc: add phy impedance settings
Mugunthan V N [Tue, 18 Oct 2016 11:20:19 +0000 (16:50 +0530)]
ARM: dts: dra72-evm-revc: add phy impedance settings

The default impedance settings of the phy is not the optimal
value, due to this the second ethernet is not working. Fix it
with correct values which makes the second ethernet port to work.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: dp83867: add support for MAC impedance configuration
Mugunthan V N [Tue, 18 Oct 2016 11:20:18 +0000 (16:50 +0530)]
net: phy: dp83867: add support for MAC impedance configuration

Add support for programmable MAC impedance configuration

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: dp83867: Add documentation for optional impedance control
Mugunthan V N [Tue, 18 Oct 2016 11:20:17 +0000 (16:50 +0530)]
net: phy: dp83867: Add documentation for optional impedance control

Add documention of ti,min-output-impedance and ti,max-output-impedance
which can be used to correct MAC impedance mismatch using phy extended
registers.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agovlan: Remove unnecessary comparison of unsigned against 0
Tobias Klauser [Tue, 18 Oct 2016 06:44:17 +0000 (08:44 +0200)]
vlan: Remove unnecessary comparison of unsigned against 0

args.u.name_type is of type unsigned int and is always >= 0.

This fixes the following GCC warning:

  net/8021q/vlan.c: In function ‘vlan_ioctl_handler’:
  net/8021q/vlan.c:574:14: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofsl/fman: fix error return code in mac_probe()
Wei Yongjun [Mon, 17 Oct 2016 15:19:56 +0000 (15:19 +0000)]
fsl/fman: fix error return code in mac_probe()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 3933961682a3 ("fsl/fman: Add FMan MAC driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: report right mtu value in error message
Jakub Kicinski [Mon, 17 Oct 2016 17:02:22 +0000 (18:02 +0100)]
net: report right mtu value in error message

Check is for max_mtu but message reports min_mtu.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: ethernet: nb8800: fix error return code in nb8800_open()
Wei Yongjun [Mon, 17 Oct 2016 15:31:58 +0000 (15:31 +0000)]
net: ethernet: nb8800: fix error return code in nb8800_open()

Fix to return error code -ENODEV from the of_phy_connect() error
handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: fix format string for trace output
Arnd Bergmann [Mon, 17 Oct 2016 14:30:57 +0000 (16:30 +0200)]
fjes: fix format string for trace output

phys_addr_t may be wider than a pointer and has to be printed
using the special %pap format string, as pointed out by
this new warning.

arch/x86/include/../../../drivers/net/fjes/fjes_trace.h: In function ‘trace_raw_output_fjes_hw_start_debug_req’:
arch/x86/include/../../../drivers/net/fjes/fjes_trace.h:212:563: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]

Note that this has to pass the address by reference instead of
casting it to a different type.

Fixes: b6ba737d0b29 ("fjes: ethtool -w and -W support for fjes driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'mv88e6xxx-interrupt-support'
David S. Miller [Mon, 17 Oct 2016 15:18:09 +0000 (11:18 -0400)]
Merge branch 'mv88e6xxx-interrupt-support'

Andrew Lunn says:

====================
Interrupt support for mv88e6xxx

This patchset add interrupt controller support to the MV88E6xxx.  This
allows access to the interrupts the internal PHY generate. These
interrupts can then be associated to a PHY device in the device tree
and used by the PHY lib, rather than polling.

Since interrupt handling needs to make MDIO bus accesses, threaded
interrupts are used. The phylib needs to request the PHY interrupt
using the threaded IRQ API. This in term allows some simplification to
the code, in that the phylib interrupt handler can directly call
phy_change(), rather than use a work queue. The work queue is however
retained for the phy_mac_interrupt() call, which can be called in hard
interrupt context.

Since RFC v1:

Keep phy_mac_interrupt() callable in hard IRQ context.

The fix to trigger the phy state machine transitions on interrupts has
already been submitted, so is dropped from here.

Added back shared interrupts support.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoarm: vf610: zii devel b: Add support for switch interrupts
Andrew Lunn [Sun, 16 Oct 2016 17:56:53 +0000 (19:56 +0200)]
arm: vf610: zii devel b: Add support for switch interrupts

The Switches use GPIO lines to indicate interrupts from two of the
switches.

With these interrupts in place, we can make use of the interrupt
controllers within the switch to indicate when the internal PHYs
generate an interrupt. Use standard PHY properties to do this.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: Use phy name when requesting the interrupt
Andrew Lunn [Sun, 16 Oct 2016 17:56:52 +0000 (19:56 +0200)]
net: phy: Use phy name when requesting the interrupt

Using the fixed name "phy_interrupt" is not very informative in
/proc/interrupts when there are a lot of phys, e.g. a device with an
Ethernet switch. So when requesting the interrupt, use the name of the
phy.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: Threaded interrupts allow some simplification
Andrew Lunn [Sun, 16 Oct 2016 17:56:51 +0000 (19:56 +0200)]
net: phy: Threaded interrupts allow some simplification

The PHY interrupts are now handled in a threaded interrupt handler,
which can sleep. The work queue is no longer needed, phy_change() can
be called directly. phy_mac_interrupt() still needs to be safe to call
in interrupt context, so keep the work queue, and use a helper to call
phy_change().

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: Use threaded IRQ, to allow IRQ from sleeping devices
Andrew Lunn [Sun, 16 Oct 2016 17:56:50 +0000 (19:56 +0200)]
net: phy: Use threaded IRQ, to allow IRQ from sleeping devices

The interrupt lines from PHYs maybe connected to I2C bus expanders, or
from switches on MDIO busses. Such interrupts are sourced from devices
which sleep, so use threaded interrupts. Threaded interrupts require
that the interrupt requester also uses the threaded API. Change the
phylib to use the threaded API, which is backwards compatible with
none-threaded IRQs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: dsa: mv88e6xxx: Implement interrupt support.
Andrew Lunn [Sun, 16 Oct 2016 17:56:49 +0000 (19:56 +0200)]
net: dsa: mv88e6xxx: Implement interrupt support.

The switch can have up to two interrupt controllers. One of these
contains the interrupts from the integrated PHYs, so is useful to
export. The Marvell PHY driver can then be used in interrupt mode,
rather than polling, speeding up PHY handling and reducing load on the
MDIO bus.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agords: Remove duplicate prefix from rds_conn_path_error use
Joe Perches [Sat, 15 Oct 2016 18:53:22 +0000 (11:53 -0700)]
rds: Remove duplicate prefix from rds_conn_path_error use

rds_conn_path_error already prefixes "RDS:" to the output.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agords: Remove unused rds_conn_error
Joe Perches [Sat, 15 Oct 2016 18:53:21 +0000 (11:53 -0700)]
rds: Remove unused rds_conn_error

This macro's last use was removed in commit d769ef81d5b59
("RDS: Update rds_conn_shutdown to work with rds_conn_path")
so make the macro and the __rds_conn_error function definition
and declaration disappear.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: hip04: Remove superfluous ether_setup after alloc_etherdev
Tobias Klauser [Mon, 17 Oct 2016 07:22:04 +0000 (09:22 +0200)]
net: hip04: Remove superfluous ether_setup after alloc_etherdev

There is no need to call ether_setup after alloc_ethdev since it was
already called there.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoila: Don't use dest cache when gateway is set
Tom Herbert [Mon, 17 Oct 2016 04:25:35 +0000 (21:25 -0700)]
ila: Don't use dest cache when gateway is set

If the gateway is set on an ILA route we don't need to bother with using
the destination cache in the ILA route. Translation does not change the
routing in this case so we can stick with orig_output in the lwstate
output function.

Tested: Ran netperf with and without gateway for LWT route.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipvlan: constify l3mdev_ops structure
Julia Lawall [Sat, 15 Oct 2016 15:40:30 +0000 (17:40 +0200)]
ipvlan: constify l3mdev_ops structure

This l3mdev_ops structure is only stored in the l3mdev_ops field of a
net_device structure.  This field is declared const, so the l3mdev_ops
structure can be declared as const also.  Additionally drop the
__read_mostly annotation.

The semantic patch that adds const is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct l3mdev_ops i@p = { ... };

@ok@
identifier r.i;
struct net_device *e;
position p;
@@
e->l3mdev_ops = &i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct l3mdev_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct l3mdev_ops i = { ... };
// </smpl>

The effect on the layout of the .o file is shown by the following output
of the size command, first before then after the transformation:

   text    data     bss     dec     hex filename
   7364     466      52    7882    1eca drivers/net/ipvlan/ipvlan_main.o
   7412     434      52    7898    1eda drivers/net/ipvlan/ipvlan_main.o

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'ila-cached-route'
David S. Miller [Sat, 15 Oct 2016 21:33:42 +0000 (17:33 -0400)]
Merge branch 'ila-cached-route'

Tom Herbert says:

====================
ila: Cache a route in ILA lwt structure

Add a dst_cache to ila_lwt structure. This holds a cached route for the
translated address. In ila_output we now perform a route lookup after
translation and if possible (destination in original route is full 128
bits) we set the dst_cache. Subsequent calls to ila_output can then use
the cache to avoid the route lookup.

This eliminates the need to set the gateway on ILA routes as previously
was being done. Now we can do somthing like:

./ip route add 3333::2000:0:0:2/128 encap ila 2222:0:0:2 \
    csum-mode neutral-map dev eth0  ## No via needed!

Also, add destroy_state to lwt ops. We need this do destroy the
dst_cache.

- v2
  - Fixed comparisons to fc_dst_len to make comparison against number
    of bits in data structure not bytes.
  - Move destroy_state under build_state (requested by Jiri)
  - Other minor cleanup

Tested:

Running 200 TCP_RR streams:

  Baseline, no ILA

    1730716 tps
    102/170/313 50/90/99% latencies
    88.11 CPU utilization

  Using ILA in both directions

    1680428 tps
    105/176/325 50/90/99% latencies
    88.16 CPU utilization
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoila: Cache a route to translated address
Tom Herbert [Fri, 14 Oct 2016 18:25:37 +0000 (11:25 -0700)]
ila: Cache a route to translated address

Add a dst_cache to ila_lwt structure. This holds a cached route for the
translated address. In ila_output we now perform a route lookup after
translation and if possible (destination in original route is full 128
bits) we set the dst_cache. Subsequent calls to ila_output can then use
the cache to avoid the route lookup.

This eliminates the need to set the gateway on ILA routes as previously
was being done. Now we can do something like:

./ip route add 3333::2000:0:0:2/128 encap ila 2222:0:0:2 \
    csum-mode neutral-map dev eth0  ## No via needed!

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agolwtunnel: Add destroy state operation
Tom Herbert [Fri, 14 Oct 2016 18:25:36 +0000 (11:25 -0700)]
lwtunnel: Add destroy state operation

Users of lwt tunnels may set up some secondary state in build_state
function. Add a corresponding destroy_state function to allow users to
clean up state. This destroy state function is called from lwstate_free.
Also, we now free lwstate using kfree_rcu so user can assume structure
is not freed before rcu.

Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'fjes-next'
David S. Miller [Fri, 14 Oct 2016 16:04:58 +0000 (12:04 -0400)]
Merge branch 'fjes-next'

Taku Izumi says:

====================
FUJITSU Extended Socket driver version 1.2

This patchset updates FUJITSU Extended Socket network driver into version 1.2.
This includes the following enhancements:
  - ethtool -d support
  - ethtool -S enhancement
  - ethtool -w/-W support
  - Add some debugging feature (tracepoints etc)

v1 -> v2:
  - Use u64 instead of phys_addr_t as TP_STRUCT__entry
  - Use ethtool facility to achieve debug mode instead of using debugfs
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: Update fjes driver version : 1.2
Taku Izumi [Fri, 14 Oct 2016 11:28:15 +0000 (20:28 +0900)]
fjes: Update fjes driver version : 1.2

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: Add debugfs entry for EP status information in fjes driver
Taku Izumi [Fri, 14 Oct 2016 11:28:07 +0000 (20:28 +0900)]
fjes: Add debugfs entry for EP status information in fjes driver

This patch adds debugfs entry to show EP status information.
You can get each EP's status information like the following:

  # cat /sys/kernel/debug/fjes/fjes.0/status

EPID    STATUS           SAME_ZONE        CONNECTED
ep0     shared           Y                Y
ep1     -                -                -
ep2     unshared         N                N
ep3     unshared         N                N
ep4     unshared         N                N
ep5     unshared         N                N
ep6     unshared         N                N
ep7     unshared         N                N

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: ethtool -w and -W support for fjes driver
Taku Izumi [Fri, 14 Oct 2016 11:27:45 +0000 (20:27 +0900)]
fjes: ethtool -w and -W support for fjes driver

This patch adds implementation of supporting
ethtool -w and -W for fjes driver.

You can enable and disable firmware debug mode by
using ethtool -W, and also retrieve firmware
activity information by using ethtool -w.

This is useful for debugging.

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: Add tracepoints in fjes driver
Taku Izumi [Fri, 14 Oct 2016 11:27:38 +0000 (20:27 +0900)]
fjes: Add tracepoints in fjes driver

This patch adds tracepoints in fjes driver.
This is useful for debugging purpose.

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: Enhance ethtool -S for fjes driver
Taku Izumi [Fri, 14 Oct 2016 11:27:32 +0000 (20:27 +0900)]
fjes: Enhance ethtool -S for fjes driver

This patch enhances ethtool -S for fjes driver so that
EP related statistics can be retrieved.

The following statistics can be displayed via ethtool -S:

     ep%d_com_regist_buf_exec
     ep%d_com_unregist_buf_exec
     ep%d_send_intr_rx
     ep%d_send_intr_unshare
     ep%d_send_intr_zoneupdate
     ep%d_recv_intr_rx
     ep%d_recv_intr_unshare
     ep%d_recv_intr_stop
     ep%d_recv_intr_zoneupdate
     ep%d_tx_buffer_full
     ep%d_tx_dropped_not_shared
     ep%d_tx_dropped_ver_mismatch
     ep%d_tx_dropped_buf_size_mismatch
     ep%d_tx_dropped_vlanid_mismatch

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agofjes: ethtool -d support for fjes driver
Taku Izumi [Fri, 14 Oct 2016 11:27:25 +0000 (20:27 +0900)]
fjes: ethtool -d support for fjes driver

This patch adds implementation of supporting
ethtool -d for fjes driver. By using ethtool -d,
you can get registers dump of Exetnded socket device.

  # ethtool -d es0

Offset          Values
------          ------
0x0000:         01 00 00 00 08 00 00 00 00 00 00 00 00 00 00 00
0x0010:         00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0020:         02 00 00 80 02 00 00 80 64 a6 58 08 07 00 00 00
0x0030:         00 00 00 00 28 80 00 00 00 00 f9 e3 06 00 00 00
0x0040:         00 00 00 00 18 00 00 00 80 a4 58 08 07 00 00 00
0x0050:         00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0060:         00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0070:         00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0080:         00 00 00 00 00 00 e0 7f 00 00 01 00 00 00 01 00
0x0090:         00 00 00 00

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'qed-next'
David S. Miller [Fri, 14 Oct 2016 15:59:59 +0000 (11:59 -0400)]
Merge branch 'qed-next'

Manish Chopra says:

====================
qed*: driver updates

There are several new additions in this series;
Most are connected to either Tx offloading or Rx classifications
[either fastpath changes or supporting configuration].

In addition, there's a single IOV enhancement.

Please consider applying this series to `net-next'.

V2->V3:
Fixes below kbuild warning
call to '__compiletime_assert_60' declared with
attribute error: Need native word sized stores/loads for atomicity.

V1->V2:
Added a fix for the race in ramrod handling
pointed by Eric Dumazet [patch 7].
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Fix possible race when reading firmware return code.
Manish Chopra [Fri, 14 Oct 2016 09:19:23 +0000 (05:19 -0400)]
qed: Fix possible race when reading firmware return code.

While handling SPQ ramrod completion, there is a possible race
where driver might not read updated fw return code based on
ramrod completion done. This patch ensures that fw return code
is written first and then completion done flag is updated
using appropriate memory barriers.

Signed-off-by: Manish Chopra <manish.chopra@caviumnetworks.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Handle malicious VFs events
Yuval Mintz [Fri, 14 Oct 2016 09:19:22 +0000 (05:19 -0400)]
qed: Handle malicious VFs events

Malicious VFs might be caught in several different methods:
  - Misusing their bar permission and being blocked by hardware.
  - Misusing their fastpath logic and being blocked by firmware.
  - Misusing their interaction with their PF via hw-channel,
    and being blocked by PF driver.

On the first two items, firmware would indicate to driver that
the VF is to be considered malicious, but would sometime still
allow the VF to communicate with the PF [depending on the exact
nature of the malicious activity done by the VF].
The current existing logic on the PF side lacks handling of such events,
and might allow the PF to perform some incorrect configuration on behalf
of a VF that was previously indicated as malicious.

The new scheme is simple -
Once the PF determines a VF is malicious it would:
 a. Ignore any further requests on behalf of the VF-driver.
 b. Prevent any configurations initiated by the hyperuser for
    the malicious VF, as firmware isn't willing to serve such.

The malicious indication would be cleared upon the VF flr,
after which it would become usable once again.

Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Allow chance for fast ramrod completions
Yuval Mintz [Fri, 14 Oct 2016 09:19:21 +0000 (05:19 -0400)]
qed: Allow chance for fast ramrod completions

Whenever a ramrod is being sent for some device configuration,
the driver is going to sleep at least 5ms between each iteration
of polling on the completion of the ramrod.

However, in almost every configuration scenario the firmware
would be able to comply and complete the ramrod in a manner of
several usecs. This is especially important in cases where there
might be a lot of sequential configurations applying to the hardware
[e.g., RoCE], in which case the existing scheme might cause some
visible user delays.

This patch changes the completion scheme - instead of immediately
starting to sleep for a 'long' period, allow the device to quickly
poll on the first iteration after a couple of usecs.

Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed*: Allow unicast filtering
Yuval Mintz [Fri, 14 Oct 2016 09:19:20 +0000 (05:19 -0400)]
qed*: Allow unicast filtering

Apparently qede fails to set IFF_UNICAST_FLT, and as a result is not
actually performing unicast MAC filtering.
While we're at it - relax a hard-coded limitation that limits each
interface into using at most 15 unicast MAC addresses before turning
promiscuous. Instead utilize the HW resources to their limit.

Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqede: Prevent GSO on long Geneve headers
Manish Chopra [Fri, 14 Oct 2016 09:19:19 +0000 (05:19 -0400)]
qede: Prevent GSO on long Geneve headers

Due to hardware limitation, when transmitting a geneve-encapsulated
packet with more than 32 bytes worth of geneve options the hardware
would not be able to crack the packet and consider it a regular UDP
packet.

This implements the ndo_features_check() in qede in order to prevent
GSO on said transmitted packets.

Signed-off-by: Manish Chopra <manish.chopra@caviumnetworks.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqede: GSO support for tunnels with outer csum
Manish Chopra [Fri, 14 Oct 2016 09:19:18 +0000 (05:19 -0400)]
qede: GSO support for tunnels with outer csum

This patch adds GSO support for GRE and UDP tunnels
where outer checksums are enabled.

Signed-off-by: Manish Chopra <manish.chopra@caviumnetworks.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>