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2016-09-17bna: fix crash in bnad_get_strings()Ivan Vecera
Commit 6e7333d "net: add rx_nohandler stat counter" added the new entry rx_nohandler into struct rtnl_link_stats64. Unfortunately the bna driver foolishly depends on the structure. It uses part of it for ethtool statistics and it's not bad but the driver assumes its size is constant as it defines string for each existing entry. The problem occurs when the structure is extended because you need to modify bna driver as well. If not any attempt to retrieve ethtool statistics results in crash in bnad_get_strings(). The patch changes BNAD_ETHTOOL_STATS_NUM so it counts real number of strings in the array and also removes rtnl_link_stats64 entries that are not used in output and are always zero. Fixes: 6e7333d "net: add rx_nohandler stat counter" Signed-off-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17bna: add missing per queue ethtool statIvan Vecera
Commit ba5ca784 "bna: check for dma mapping errors" added besides other things a statistic that counts number of DMA buffer mapping failures per each Rx queue. This counter is not included in ethtool stats output. Fixes: ba5ca784 "bna: check for dma mapping errors" Signed-off-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17Merge tag 'iwlwifi-for-kalle-2016-09-15' of ↵Kalle Valo
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes * fix to prevent firmware crash when sending off-channel frames
2016-09-17sctp: fix SSN comparisionMarcelo Ricardo Leitner
This function actually operates on u32 yet its paramteres were declared as u16, causing integer truncation upon calling. Note in patch context that ADDIP_SERIAL_SIGN_BIT is already 32 bits. Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17irda: Free skb on irda_accept error path.phil.turnbull@oracle.com
skb is not freed if newsk is NULL. Rework the error path so free_skb is unconditionally called on function exit. Fixes: c3ea9fa27413 ("[IrDA] af_irda: IRDA_ASSERT cleanups") Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17net: avoid sk_forward_alloc overflowsEric Dumazet
A malicious TCP receiver, sending SACK, can force the sender to split skbs in write queue and increase its memory usage. Then, when socket is closed and its write queue purged, we might overflow sk_forward_alloc (It becomes negative) sk_mem_reclaim() does nothing in this case, and more than 2GB are leaked from TCP perspective (tcp_memory_allocated is not changed) Then warnings trigger from inet_sock_destruct() and sk_stream_kill_queues() seeing a not zero sk_forward_alloc All TCP stack can be stuck because TCP is under memory pressure. A simple fix is to preemptively reclaim from sk_mem_uncharge(). This makes sure a socket wont have more than 2 MB forward allocated, after burst and idle period. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17tcp: fix overflow in __tcp_retransmit_skb()Eric Dumazet
If a TCP socket gets a large write queue, an overflow can happen in a test in __tcp_retransmit_skb() preventing all retransmits. The flow then stalls and resets after timeouts. Tested: sysctl -w net.core.wmem_max=1000000000 netperf -H dest -- -s 1000000000 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17xen-netback: fix error handling on netback_probe()Filipe Manco
In case of error during netback_probe() (e.g. an entry missing on the xenstore) netback_remove() is called on the new device, which will set the device backend state to XenbusStateClosed by calling set_backend_state(). However, the backend state wasn't initialized by netback_probe() at this point, which will cause and invalid transaction and set_backend_state() to BUG(). Initialize the backend state at the beginning of netback_probe() to XenbusStateInitialising, and create two new valid state transitions on set_backend_state(), from XenbusStateInitialising to XenbusStateClosed, and from XenbusStateInitialising to XenbusStateInitWait. Signed-off-by: Filipe Manco <filipe.manco@neclab.eu> Acked-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-16Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds
Pull cifs fixes from Steve French: "Small set of cifs fixes" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: Move check for prefix path to within cifs_get_root() Compare prepaths when comparing superblocks Fix memory leaks in cifs_do_mount()
2016-09-16Merge tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
Pull nfsd bugfix from Bruce Fields: "Fix a memory corruption bug that I introduced in 4.7" * tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linux: svcauth_gss: Revert 64c59a3726f2 ("Remove unnecessary allocation")
2016-09-16Merge tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Two sets of i915 fixes, one set of vc4 crasher fixes, and a couple of atmel fixes. Nothing too out there at this stage, though I think some people are holidaying so it's been quiet enough" * tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux: drm/i915: Ignore OpRegion panel type except on select machines Revert "drm/i915/psr: Make idle_frames sensible again" drm/i915: Restore lost "Initialized i915" welcome message drm/vc4: mark vc4_bo_cache_purge() static drm/i915: Add GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE to SNB drm/i915: disable 48bit full PPGTT when vGPU is active drm/i915: enable vGPU detection for all drm/atmel-hlcdc: Make ->reset() implementation static drm: atmel-hlcdc: Fix vertical scaling drm/vc4: Allow some more signals to be packed with uniform resets. drm/i915/dvo: Remove dangling call to drm_encoder_cleanup()
2016-09-16Merge tag 'pm-4.8-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "More annotations of tracepoints in the runtime PM framework to prevent RCU from complaining when that code is invoked from the idle path (Paul McKenney)" * tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / runtime: Use _rcuidle for runtime suspend tracepoints
2016-09-17Merge tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux into ↵Dave Airlie
drm-fixes This pull request brings in a fix for crashes in X on VC4. * tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux: drm/vc4: mark vc4_bo_cache_purge() static drm/vc4: Allow some more signals to be packed with uniform resets.
2016-09-17Merge tag 'drm-intel-fixes-2016-09-15' of ↵Dave Airlie
git://anongit.freedesktop.org/drm-intel into drm-fixes i915 fixes from Jani. * tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel: drm/i915: Ignore OpRegion panel type except on select machines Revert "drm/i915/psr: Make idle_frames sensible again" drm/i915: Restore lost "Initialized i915" welcome message
2016-09-16Merge tag 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull rdma fixes from Doug Ledford: "Round three of 4.8 rc fixes. This is likely the last rdma pull request this cycle. The new rxe driver had a few issues (you probably saw the boot bot bug report) and they should be addressed now. There are a couple other fixes here, mainly mlx4. There are still two outstanding issues that need resolved but I don't think their fix will make this kernel cycle. Summary: - Various fixes to rdmavt, ipoib, mlx5, mlx4, rxe" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: IB/rdmavt: Don't vfree a kzalloc'ed memory region IB/rxe: Fix kmem_cache leak IB/rxe: Fix race condition between requester and completer IB/rxe: Fix duplicate atomic request handling IB/rxe: Fix kernel panic in udp_setup_tunnel IB/mlx5: Set source mac address in FTE IB/mlx5: Enable MAD_IFC commands for IB ports only IB/mlx4: Diagnostic HW counters are not supported in slave mode IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV IB/mlx4: Fix code indentation in QP1 MAD flow IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV IB/ipoib: Don't allow MC joins during light MC flush IB/rxe: fix GFP_KERNEL in spinlock context
2016-09-16drm/ttm: remove cpu_address member from ttm_ttAlexandre Courbot
Patch 3d50d4dcb0 exposed the CPU address of DMA-allocated pages as returned by dma_alloc_coherent because Nouveau on Tegra needed it. This is not required anymore - as there were no other users for it, remove it and save some memory for everyone. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/radeon/radeon_device: remove unused functionBaoyou Xie
We get 2 warnings when building kernel with W=1: drivers/gpu/drm/radeon/radeon_device.c:1961:5: warning: no previous prototype for 'radeon_debugfs_init' [-Wmissing-prototypes] drivers/gpu/drm/radeon/radeon_device.c:1966:6: warning: no previous prototype for 'radeon_debugfs_cleanup' [-Wmissing-prototypes] In fact, these functions are dummy, but can be removed, so this patch removes them. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu: clean function declarations in amdgpu_ttm.c upBaoyou Xie
We get 2 warnings when building kernel with W=1: drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:985:5: warning: no previous prototype for 'amdgpu_ttm_init' [-Wmissing-prototypes] drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:1092:6: warning: no previous prototype for 'amdgpu_ttm_fini' [-Wmissing-prototypes] In fact, both functions are declared in drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c, but should be declared in a header file, thus can be recognized in other file. So this patch moves the declarations into drivers/gpu/drm/amd/amdgpu/amdgpu.h. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu: use the new ring ib and dma frame size callbacks (v2)Alex Deucher
Use them to more accurately determine the ring size required for ib submission. v2: drop extra alignment Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/vce3: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/vce2: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/vce: add common ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/uvd6: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/uvd5: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/uvd4.2: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/sdma3: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/sdma2.4: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/cik_sdma: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/si_dma: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/gfx8: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/gfx7: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/gfx6: add ring callbacks for ib and dma frame sizeAlex Deucher
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/ring: add an interface to get dma frame and ib sizeAlex Deucher
Used to properly calculate space on the ring for ib submissions. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/sdma3: drop unused functionsAlex Deucher
These are not used yet. Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/gfx6: drop gds_switch callbackAlex Deucher
GDS works differently on GFX6, plus the callback was empty. Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/gfx6: add ring_emit_cntxcntlAlex Deucher
Missing for gfx6. Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/gfx6: drop duplicate codeAlex Deucher
The compute functions just called the gfx functions, drop the wrapper. Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/si: fix ring size for computeAlex Deucher
We switched the other asics, but missed this. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amd/powerplay: Partially revert change initialize platform capsRex Zhu
partially revert commit I36f3c9e3a28cbf290652edfb6e19109da660c4f1 this will lead APU can't work. Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu: not set cg for vce/uvd in late init.Rex Zhu
no need to set cg for uvd/vce in late init. As when ring test, uvd/vce's dpm will be enabled/disabled. the cg will be set. fix issue suspend when play video or encode, then resume back, the clock will be bypassed on Polaris/Fiji. Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amd/powerplay: add pptable point check before use itRex Zhu
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amd/powerplay: add pp_table_version in hwmgr.Rex Zhu
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amd/powerplay: rename tonga_processpptable* to processpptable_v1_0*.Rex Zhu
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16drm/amdgpu/vi: Use correct external_rev_id for stoneyJordan Lazare
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Jordan Lazare <Jordan.Lazare@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-16Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Arnd Bergmann: "Here are a couple of bugfixes for v4.8-rc. Most of them have actually been around for a while this time but for some reason didn't get applied early on. The shmobile regulator fix is the only one that isn't completely obvious. Device tree changes: - archtimer interrupts must be level triggered (multiple platforms) - fix for USB and MMC clocks on STiH410 - fix split DT repository in case of raspberry-pi 3 - a new use of skeleton.dtsi on arm64 has crept in after that was removed. defconfig updates: - xilinx vdma has a new Kconfig symbol name - keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1 Code fixes: - fix regulator quirk on shmobile - suspend-to-ram regression on EXYNOS Maintainer updates: - Javier Martinez Canillas is now a reviewer for Samsung EXYNOS" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: keystone: defconfig: Fix USB configuration arm64: dts: Fix broken architected timer interrupt trigger ARM: multi_v7_defconfig: update XILINX_VDMA ARM64: dts: bcm: Use a symlink to R-Pi dtsi files from arch=arm ARM: dts: Remove use of skeleton.dtsi from bcm283x.dtsi ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB) ARM: shmobile: fix regulator quirk for Gen2 ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback MAINTAINERS: Add myself as reviewer for Samsung Exynos support
2016-09-16Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM fixes from Russell King: "Most of this update are fixes primarily discovered from testing on the older StrongARM 1110 and PXA systems, as a result of recent interest from several people in these platforms: - Locomo interrupt handling incorrectly stores the handler data in the chip's private data slot: when Locomo is combined with an interrupt controller who's chip uses the chip private data, this leads to an oops. - SA1111 was missing a call to clk_disable() to clean up after a failed probe. - SA1111 and PCMCIA suspend/resume was broken: The PCMCIA "ds" layer was using the legacy bus suspend/resume methods, which the core PM code is no longer calling as a result of device_pm_check_callbacks() introduced in commit aa8e54b559479 ("PM / sleep: Go direct_complete if driver has no callbacks"). SA1111 was broken due to changes to PCMCIA which makes PCMCIA suspend itself later than the SA1111 code expects, and resume before the SA1111 code has initialised access to the pcmcia sub-device. - the default SA1111 interrupt mask polarity got messed up when it was converted to use a dynamic interrupt base number for its interrupts. - fix platform_get_irq() error code propagation, which was causing problems on platforms where the interrupt may not be available at probe time in DT setups. - fix the lack of clock to PCMCIA code on PXA platforms, which was omitted in conversions of PXA to CCF. - fix an oops in the PXA PCMCIA code caused by a previous commit not realising that Lubbock is different from the rest of the PXA PCMCIA drivers. - ensure that SA1111 low-level PCMCIA drivers propagate their error codes to the main probe function, rather than the driver silently accepting a failure. - fix the sa11xx debugfs reporting of timing information, which always indicated zero due to the clock being a factor of 1000 out. - fix the polarity of the status change signal reported from the sockets. Lastly, one ARM specific commit from Stefan Agner fixing the LPAE cache attributes" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: pxa/lubbock: add pcmcia clock ARM: locomo: fix locomo irq handling ARM: 8612/1: LPAE: initialize cache policy correctly ARM: sa1111: fix missing clk_disable() ARM: sa1111: fix pcmcia suspend/resume ARM: sa1111: fix pcmcia interrupt mask polarity ARM: sa1111: fix error code propagation in sa1111_probe() pcmcia: lubbock: fix sockets configuration pcmcia: sa1111: fix propagation of lowlevel board init return code pcmcia: soc_common: fix SS_STSCHG polarity pcmcia: sa11xx_base: add units to the timing information pcmcia: sa11xx_base: fix reporting of timing information pcmcia: ds: fix suspend/resume
2016-09-16IB/rdmavt: Don't vfree a kzalloc'ed memory regionColin Ian King
The userspace memory region 'mr' is allocated with kzalloc in __rvt_alloc_mr however it is incorrectly being freed with vfree in __rvt_free_mr. Fix this by using kfree to free it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-09-16IB/rxe: Fix kmem_cache leakYonatan Cohen
Decrement qp reference when handling error path in completer to prevent kmem_cache leak. Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-09-16IB/rxe: Fix race condition between requester and completerYonatan Cohen
rxe_requester() is sending a pkt with rxe_xmit_packet() and then calls rxe_update() to update the wqe and qp's psn values. But sometimes the response is received before the requester had time to update the wqe in which case the completer acts on errornous wqe values. This fix updates the wqe and qp before actually sending the request and rolls back when xmit fails. Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-09-16IB/rxe: Fix duplicate atomic request handlingYonatan Cohen
When handling ack for atomic opcodes like "fetch&add" or "cmp&swp", the method send_atomic_ack() saves the ack before sending it, in case it gets lost and never reach the requester. In which case the method duplicate_request() will need to find it using the duplicated request.psn. But send_atomic_ack() used a wrong psn value and thus the above ack was never found. This fix uses the ack.psn to locate the ack in case its needed. This fix also copies the ack packet to the skb's control buffer since duplicate_request() will need it when calling rxe_xmit_packet() Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>