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We will soon want to add more code to the non-error path, separate
it from the error handling flow.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit dfa0d55ff6be64e7b6881212a291cb95f8da3b08.
Discussion still ongoing, I shouldn't have applied this.
Signed-off-by: David S. Miller <davem@davemloft.net>
This covers for proper accounting of encap needed static keys
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/isdn/hisax/hfc_pci.c:277:6: warning:
variable ‘total’ set but not used [-Wunused-but-set-variable]
It never used since git history start.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit 60fb9567bf30 ("udp: implement complete book-keeping for
encap_needed") introduced a severe misuse of jump label APIs, which
syzbot, as reported by Eric, was able to exploit.
When multiple sockets/process can concurrently request (and than
disable) the udp encap, we need to track the activation counter with
*_inc()/*_dec() jump label variants, or we can experience bad things
at disable time.
Fixes: 60fb9567bf30 ("udp: implement complete book-keeping for encap_needed")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently on dequeue() ETF only drops the first expired packet, which
causes a problem if the next packet is already expired. When this
happens, the watchdog will be configured with a time in the past, fire
straight way and the packet will finally be dropped once the dequeue()
function of the qdisc is called again.
We can save quite a few cycles and improve the overall behavior of the
qdisc if we drop all expired packets if the next packet is expired.
This should allow ETF to recover faster from bad situations. But
packet drops are still a very serious warning that the requirements
imposed on the system aren't reasonable.
This was inspired by how the implementation of hrtimers use the
rb_tree inside the kernel.
Signed-off-by: Jesus Sanchez-Palencia <jesus.s.palencia@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is just a refactor that will simplify the implementation of the
next patch in this series which will drop all expired packets on the
dequeue flow.
Signed-off-by: Jesus Sanchez-Palencia <jesus.s.palencia@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ETF's peek() operation is heavily used so use an rb_root_cached instead
and leverage rb_first_cached() which will run in O(1) instead of
O(log n).
Even if on 'timesortedlist_clear()' we could be using rb_erase(), we
choose to use rb_erase_cached(), because if in the future we allow
runtime changes to ETF parameters, and need to do a '_clear()', this
might cause some hard to debug issues.
Signed-off-by: Jesus Sanchez-Palencia <jesus.s.palencia@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no point in firing the qdisc watchdog if there are no future
skbs pending in the queue and the watchdog had been set previously.
Signed-off-by: Jesus Sanchez-Palencia <jesus.s.palencia@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently we can use bpf or tcp tracepoint to conveniently trace the tcp
state transition at the run time.
So we don't need to do this stuff at the compile time anymore.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Explicitly pad short ELP packets with zeros, by Sven Eckelmann
- Fix packet size calculation when merging fragments,
by Sven Eckelmann
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Merge tag 'batadv-net-for-davem-20181114' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
Here are two batman-adv bugfixes:
- Explicitly pad short ELP packets with zeros, by Sven Eckelmann
- Fix packet size calculation when merging fragments,
by Sven Eckelmann
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit re-enables support for slow GPIO pins. It was initially
introduced by commit 2d6c9091ab76 ("net: mdio-gpio: support access that
may sleep") and got lost by commit 7e5fbd1e0700 ("net: mdio-gpio:
Convert to use gpiod functions where possible").
Also add a warning about slow GPIO pins like it is done in i2c-gpio.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Dooks says:
====================
SMSC95xx driver updates (round 1)
This is a series of a few driver cleanups and some fixups of the code
for the SMSC95XX driver. There have been a few reviews, and the issues
have been fixed so this should be ready for merging.
I will work on the tx-alignment and the other bits of usbnet changes
and produce at least two more patch series for this later.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The manual states that the checksum cannot lie in the last DWORD of the
transmission, so add a basic check for this and fall back to software
checksumming the packet.
This only seems to trigger for ACK packets with no options or data to
return to the other end, and the use of the tx-alignment option makes
it more likely to happen.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change the RX code to use get_unaligned_le32() instead of the combo
of memcpy and cpu_to_le32s(&var).
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The smsc95xx_tx_fixup is doing multiple calls to skb_push() to
put an 8-byte command header onto the packet. It would be easier
to do one skb_push() and then copy the data in once the push is
done.
We also make the code smaller by using proper unaligned puts for
the header. This merges in the CPU to LE32 conversion as well and
makes the whole sequence easier to understand hopefully.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The smsc95xx driver already takes into account the NET_IP_ALIGN
parameter when setting up the receive packet data, which means
we do not need to worry about aligning the packets in the usbnet
driver.
Adding the EVENT_NO_IP_ALIGN means that the IPv4 header is now
passed to the ip_rcv() routine with the start on an aligned address.
Tested on Raspberry Pi B3.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ioana Ciocoi Radulescu says:
====================
dpaa2-eth: add bql support
The first two patches make minor tweaks to the driver to
simplify bql implementation. The third patch adds the actual
bql support.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for byte queue limit.
On NAPI poll, we save the total number of Tx confirmed frames/bytes
and register them with bql at the end of the poll function.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change the frame consume callback signature:
* the entire FQ structure is passed to the callback instead
of just the queue index
* the NAPI structure can be easily obtained from the channel
it is associated to, so we don't need to pass it explicitly
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The DPNI object on which we build a network interface has a
certain number of {Rx, Tx, Tx confirmation} frame queues as
resources. The default hardware setup offers one queue of each
type, as well as one DPCON channel, for each core available
in the system.
There are however cases where the number of queues is greater
than the number of cores or channels. Until now, we configured
and used all the frame queues associated with a DPNI, even if it
meant assigning multiple queues of one type to the same channel.
Update the driver to only use a number of queues equal to the
number of channels, ensuring each channel will contain exactly
one Rx and one Tx confirmation queue.
>From the user viewpoint, this change is completely transparent.
Performance wise there is no impact in most scenarios. In case
the number of queues is larger than and not a multiple of the
number of channels, Rx hash distribution offers now better load
balancing between cores, which can have a positive impact on
overall system performance.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tcf_idr_check_alloc() can return a negative value, on allocation failures
(-ENOMEM) or IDR exhaustion (-ENOSPC): don't leak keys_ex in these cases.
Fixes: 0190c1d452a9 ("net: sched: atomically check-allocate action")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, the vlan packet offloads are registered only upon 8021q module
load. However, even without this module loaded, the offloads could be
utilized, for example by openvswitch datapath. As reported by Michael,
that causes 2x to 5x performance improvement, depending on a testcase.
So move the vlan offload registrations into vlan_core and make this
available even without 8021q module loaded.
Reported-by: Michael Shteinbok <michaelsh86@gmail.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: Michael Shteinbok <michaelsh86@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Return 'err' in the error handling path instead of 0.
Return explicitly 0 in the normal path, instead of 'err', which is known
to be 0 at this point.
Fixes: fe1a56420cf2 ("net: lantiq: Add Lantiq / Intel VRX200 Ethernet driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
These is no need to hold dst before calling rt6_remove_exception_rt().
The call to dst_hold_safe() in ip6_link_failure() was for ip6_del_rt(),
which has been removed in Commit 93531c674315 ("net/ipv6: separate
handling of FIB entries from dst based routes"). Otherwise, it will
cause a dst leak.
This patch is to simply remove the dst_hold_safe() call before calling
rt6_remove_exception_rt() and also do the same in ip6_del_cached_rt().
It's safe, because the removal of the exception that holds its dst's
refcnt is protected by rt6_exception_lock.
Fixes: 93531c674315 ("net/ipv6: separate handling of FIB entries from dst based routes")
Fixes: 23fb93a4d3f1 ("net/ipv6: Cleanup exception and cache route handling")
Reported-by: Li Shuang <shuali@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is a missing indentation before the declaration of port. Add
it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trivial fix, the spelling of "failded" is incorrect in dev_err and
dev_warn messages. Fix this.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that the icplus driver has been fixed all PHY drivers supporting
interrupts have both callbacks (config_intr and ack_interrupt)
implemented - as it should be. Therefore phy_drv_supports_irq()
can be changed now to check for both callbacks being implemented.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michał Mirosław says:
====================
Remove VLAN.CFI overload
Fix BPF code/JITs to allow for separate VLAN_PRESENT flag
storage and finally move the flag to separate storage in skbuff.
This is final step to make CLAN.CFI transparent to core Linux
networking stack.
An #ifdef is introduced temporarily to mark fragments masking
VLAN_TAG_PRESENT. This is removed altogether in the final patch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace VLAN_TAG_PRESENT with single bit flag and free up
VLAN.CFI overload. Now VLAN.CFI is visible in networking stack
and can be passed around intact.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wrap VLAN_PRESENT bit using macro like PKT_TYPE_* and CLONED_*,
as used by BPF code.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Using 2.5G speed relies on the SerDes lanes being configured
accordingly. The lanes have to be reconfigured to switch between
1G and 2.5G, and for now only the bootloader does this configuration.
In the case we add a Comphy driver to handle switching the lanes
dynamically, it's better for now to stick with supporting only 1G and
add advertisement for 2.5G once we really are capable of handling both
speeds without problem.
Since the interface mode is initialy taken from the DT, we want to make
sure that adding comphy support won't break boards that don't update
their dtb.
Fixes: da58a931f248 ("net: mvneta: Add support for 2500Mbps SGMII")
Reported-by: Andrew Lunn <andrew@lunn.ch>
Reported-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'fsnotify_for_v4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify fix from Jan Kara:
"One small fsnotify fix for duplicate events"
* tag 'fsnotify_for_v4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fanotify: fix handling of events on child sub-directory
Pull bfs2 fixes from Andreas Gruenbacher:
"Fix two bugs leading to leaked buffer head references:
- gfs2: Put bitmap buffers in put_super
- gfs2: Fix iomap buffer head reference counting bug
And one bug leading to significant slow-downs when deleting large
files:
- gfs2: Fix metadata read-ahead during truncate (2)"
* tag 'gfs2-4.20.fixes3' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Fix iomap buffer head reference counting bug
gfs2: Fix metadata read-ahead during truncate (2)
gfs2: Put bitmap buffers in put_super
GFS2 passes the inode buffer head (dibh) from gfs2_iomap_begin to
gfs2_iomap_end in iomap->private. It sets that private pointer in
gfs2_iomap_get. Users of gfs2_iomap_get other than gfs2_iomap_begin
would have to release iomap->private, but this isn't done correctly,
leading to a leak of buffer head references.
To fix this, move the code for setting iomap->private from
gfs2_iomap_get to gfs2_iomap_begin.
Fixes: 64bc06bb32 ("gfs2: iomap buffered write support")
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull crypto fixes from Herbert Xu:
"This fixes the following issues:
- Potential memory overwrite in simd
- Kernel info leaks in crypto_user
- NULL dereference and use-after-free in hisilicon"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: user - Zeroize whole structure given to user space
crypto: user - fix leaking uninitialized memory to userspace
crypto: simd - correctly take reqsize of wrapped skcipher into account
crypto: hisilicon - Fix reference after free of memories on error path
crypto: hisilicon - Fix NULL dereference for same dst and src
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Merge tag 'drm-fixes-2018-11-16' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Live from Vancouver, SoC maintainer talk, this weeks drm fixes pull
for rc3:
omapdrm:
- regression fixes for the reordering bridge stuff that went into rc1
i915:
- incorrect EU count fix
- HPD storm fix
- MST fix
- relocation fix for gen4/5
amdgpu:
- huge page handling fix
- IH ring setup
- XGMI aperture setup
- watermark setup fix
misc:
- docs and MST fix"
* tag 'drm-fixes-2018-11-16' of git://anongit.freedesktop.org/drm/drm: (23 commits)
drm/i915: Account for scale factor when calculating initial phase
drm/i915: Clean up skl_program_scaler()
drm/i915: Move programming plane scaler to its own function.
drm/i915/icl: Drop spurious register read from icl_dbuf_slices_update
drm/i915: fix broadwell EU computation
drm/amdgpu: fix huge page handling on Vega10
drm/amd/pp: Fix truncated clock value when set watermark
drm/amdgpu: fix bug with IH ring setup
drm/meson: venc: dmt mode must use encp
drm/amdgpu: set system aperture to cover whole FB region
drm/i915: Fix hpd handling for pins with two encoders
drm/i915/execlists: Force write serialisation into context image vs execution
drm/i915/icl: Fix power well 2 wrt. DC-off toggling order
drm/i915: Fix NULL deref when re-enabling HPD IRQs on systems with MST
drm/i915: Fix possible race in intel_dp_add_mst_connector()
drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5
drm/omap: dsi: Fix missing of_platform_depopulate()
drm/omap: Move DISPC runtime PM handling to omapdrm
drm/omap: dsi: Ensure the device is active during probe
drm/omap: hdmi4: Ensure the device is active during bind
...
Two weeks worth of fixes since rc1.
- I broke 16-byte alignment of the stack when we moved PPR into pt_regs.
Despite being required by the ABI this broke almost nothing, we eventually
hit it in code where GCC does arithmetic on the stack pointer assuming the
bottom 4 bits are clear. Fix it by padding the in-kernel pt_regs by 8 bytes.
- A couple of commits fixing minor bugs in the recent SLB rewrite.
- A build fix related to tracepoints in KVM in some configurations.
- Our old "IO workarounds" code written for Cell couldn't coexist in a kernel
that runs on Power9 with the Radix MMU, fix that.
- Remove the NPU DMA ops, these just printed a warning and should never have
been called.
- Suppress an overly chatty message triggered by CPU hotplug in some configs.
- Two small selftest fixes.
Thanks to:
Alistair Popple, Gustavo Romero, Nicholas Piggin, Satheesh Rajendran, Scott Wood.
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Merge tag 'powerpc-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Two weeks worth of fixes since rc1.
- I broke 16-byte alignment of the stack when we moved PPR into
pt_regs. Despite being required by the ABI this broke almost
nothing, we eventually hit it in code where GCC does arithmetic on
the stack pointer assuming the bottom 4 bits are clear. Fix it by
padding the in-kernel pt_regs by 8 bytes.
- A couple of commits fixing minor bugs in the recent SLB rewrite.
- A build fix related to tracepoints in KVM in some configurations.
- Our old "IO workarounds" code written for Cell couldn't coexist in
a kernel that runs on Power9 with the Radix MMU, fix that.
- Remove the NPU DMA ops, these just printed a warning and should
never have been called.
- Suppress an overly chatty message triggered by CPU hotplug in some
configs.
- Two small selftest fixes.
Thanks to: Alistair Popple, Gustavo Romero, Nicholas Piggin, Satheesh
Rajendran, Scott Wood"
* tag 'powerpc-4.20-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
selftests/powerpc: Adjust wild_bctr to build with old binutils
powerpc/64: Fix kernel stack 16-byte alignment
powerpc/numa: Suppress "VPHN is not supported" messages
selftests/powerpc: Fix wild_bctr test to work on ppc64
powerpc/io: Fix the IO workarounds code to work with Radix
powerpc/mm/64s: Fix preempt warning in slb_allocate_kernel()
KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE
powerpc/mm/64s: Only use slbfee on CPUs that support it
powerpc/mm/64s: Use PPC_SLBFEE macro
powerpc/mm/64s: Consolidate SLB assertions
powerpc/powernv/npu: Remove NPU DMA ops
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Merge tag 'fuse-fixes-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
"A couple of fixes, all bound for -stable (i.e. not regressions in this
cycle)"
* tag 'fuse-fixes-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: fix use-after-free in fuse_direct_IO()
fuse: fix possibly missed wake-up after abort
fuse: fix leaked notify reply
Add missing semicolon.
Fixes: 291d57f67d244973 ("qed: Fix rdma_info structure allocation")
Cc: Michal Kalderon <michal.kalderon@cavium.com>
Cc: Denis Bolotin <denis.bolotin@cavium.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Bump version strings, by Simon Wunderlich
- Fixup includes, by Sven Eckelmann (3 patches)
- Separate BATMAN_ADV_DEBUG from DEBUGFS, by Sven Eckelmann
- Fixup tracing log documentation, by Sven Eckelmann
- Use exclusive locks to secure netlink information dump transfers,
by Sven Eckelmann (8 patches)
- Move CRC16 dependency, by Sven Eckelmann
- Enable MCAST by default, by Linus Luessing
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Merge tag 'batadv-next-for-davem-20181114' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This feature/cleanup patchset includes the following patches:
- Bump version strings, by Simon Wunderlich
- Fixup includes, by Sven Eckelmann (3 patches)
- Separate BATMAN_ADV_DEBUG from DEBUGFS, by Sven Eckelmann
- Fixup tracing log documentation, by Sven Eckelmann
- Use exclusive locks to secure netlink information dump transfers,
by Sven Eckelmann (8 patches)
- Move CRC16 dependency, by Sven Eckelmann
- Enable MCAST by default, by Linus Luessing
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Tariq Toukan says:
====================
mlx4 fixes for 4.20-rc
This patchset includes small fixes for mlx4_core driver.
First patch by Jack zeros a field in a FW communication
command, to match the FW spec.
Please queue it to -stable >= v3.17.
In the second patch I zero-initialize a variable to silence
a compliation warning.
Please queue it to -stable >= v3.19.
Third patch by Aya replaces int fields with unsigned int,
to fix a UBSAN warning.
Please queue it to -stable >= v3.13.
Series generated against net commit:
db8ddde766ad Merge branch 'qed-Miscellaneous-bug-fixes'
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
UBSAN: Undefined behavior in
drivers/net/ethernet/mellanox/mlx4/resource_tracker.c:626:29
signed integer overflow: 1802201963 + 1802201963 cannot be represented
in type 'int'
The union of res_reserved and res_port_rsvd[MLX4_MAX_PORTS] monitors
granting of reserved resources. The grant operation is calculated and
protected, thus both members of the union cannot be negative. Changed
type of res_reserved and of res_port_rsvd[MLX4_MAX_PORTS] from signed
int to unsigned int, allowing large value.
Fixes: 5a0d0a6161ae ("mlx4: Structures and init/teardown for VF resource quotas")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
