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path: root/drivers/infiniband
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2007-06-21IB/mlx4: Correct max_srq_wr returned from mlx4_ib_query_device()Jack Morgenstein
We need to keep a spare entry in the SRQ so that there always is a next WQE available when posting receives (so that we can tell the difference between a full queue and an empty queue). So subtract 1 from the value HW gives us before reporting the limit on SRQ entries to consumers. Found by Mellanox QA. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-21IPoIB/cm: Remove dead definition of struct ipoib_cm_idRoland Dreier
It's completely unused. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-21IPoIB/cm: Fix interoperability when MTU doesn't matchMichael S. Tsirkin
IPoIB connected mode currently rejects a connection request unless the supported MTU is >= the local netdevice MTU. This breaks interoperability with implementations that might have tweaked IPOIB_CM_MTU, and there's real no longer a reason to do so: this test is just a leftover from when we did not tweak MTU per-connection. Fix this by making the test as permissive as possible. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-21IPoIB/cm: Initialize RX before moving QP to RTRMichael S. Tsirkin
Fix a crasher bug in IPoIB CM: once a QP is in the RTR state, a receive completion (or even an asynchronous error) might be observed on this QP, so we have to initialize all of our receive data structures before moving to the RTR state. As an optimization (since modify_qp might take a long time), the jiffies update done when moving RX to the passive_ids list is also left in place to reduce the chance of the RX being misdetected as stale. This fixes bug <https://bugs.openfabrics.org/show_bug.cgi?id=662>. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-21IB/umem: Fix possible hang on process exitRoland Dreier
If ib_umem_release() is called after ib_uverbs_close() sets context->closing, then a process can get stuck in a D state, because the code boils down to if (down_write_trylock(&mm->mmap_sem)) down_write(&mm->mmap_sem); which is obviously a stupid instant deadlock. Fix the code so that we only try to take the lock once. This bug was introduced in commit f7c6a7b5 ("IB/uverbs: Export ib_umem_get()/ib_umem_release() to modules") which fortunately never made it into a release, and was reported by Pete Wyckoff <pw@osc.edu>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-18IB/mlx4: Make sure inline data segments don't cross a 64 byte boundaryRoland Dreier
Inline data segments in send WQEs are not allowed to cross a 64 byte boundary. We use inline data segments to hold the UD headers for MLX QPs (QP0 and QP1). A send with GRH on QP1 will have a UD header that is too big to fit in a single inline data segment without crossing a 64 byte boundary, so split the header into two inline data segments. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-18IB/mlx4: Handle FW command interface rev 3Roland Dreier
Upcoming firmware introduces command interface revision 3, which changes the way port capabilities are queried and set. Update the driver to handle both the new and old command interfaces by adding a new MLX4_FLAG_OLD_PORT_CMDS that it is set after querying the firmware interface revision and then using the correct interface based on the setting of the flag. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-18IB/mlx4: Handle buffer wraparound in __mlx4_ib_cq_clean()Jack Morgenstein
When compacting CQ entries, we need to set the correct value of the ownership bit in case the value is different between the index we copy the CQE from and the index we copy it to. Found by Ronni Zimmerman of Mellanox. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-18IB/mlx4: Get rid of max_inline_data calculationRoland Dreier
The calculation of max_inline_data in set_kernel_sq_size() is bogus, since it doesn't take into account the fact that inline segments may not cross a 64-byte boundary, and hence multiple inline segments will probably need to be used to post large inline sends. We don't support inline sends for kernel QPs anyway, so there's no point in doing this calculation anyway, since the field is just zeroed out a little later. So just delete the bogus calculation. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-18IB/mlx4: Handle new FW requirement for send request prefetchingRoland Dreier
New ConnectX firmware introduces FW command interface revision 2, which requires that for each QP, a chunk of send queue entries (the "headroom") is kept marked as invalid, so that the HCA doesn't get confused if it prefetches entries that haven't been posted yet. Add code to the driver to do this, and also update the user ABI so that userspace can request that the prefetcher be turned off for userspace QPs (we just leave the prefetcher on for all kernel QPs). Unfortunately, marking send queue entries this way is confuses older firmware, so we change the driver to allow only FW command interface revisions 2. This means that users will have to update their firmware to work with the new driver, but the firmware is changing quickly and the old firmware has lots of other bugs anyway, so this shouldn't be too big a deal. Based on a patch from Jack Morgenstein <jackm@dev.mellanox.co.il>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-12IB/mlx4: Fix warning in rounding up queue sizesRoland Dreier
Doing max(1, foo) where foo is u32 generates a warning, because 1 is a signed constant. Fix this by using 1U instead. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-12IB/mlx4: Fix handling of wq->tail for send completionsRoland Dreier
Cast the increment added to wq->tail when send completions are processed to u16 to avoid using wrong values caused by standard integer promotions. The same bug was fixed in libmlx4 by Eli Cohen <eli@mellanox.co.il>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-11Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Make sure RQ allocation is always valid RDMA/cma: Fix initialization of next_port IB/mlx4: Fix zeroing of rnr_retry value in ib_modify_qp() mlx4_core: Don't set MTT address in dMPT entries with PA set mlx4_core: Check firmware command interface revision IB/mthca, mlx4_core: Fix typo in comment mlx4_core: Free catastrophic error MSI-X interrupt with correct dev_id mlx4_core: Initialize ctx_list and ctx_lock earlier mlx4_core: Fix CQ context layout
2007-06-07IB/mlx4: Make sure RQ allocation is always validRoland Dreier
QPs attached to an SRQ must never have their own RQ, and QPs not attached to SRQs must have an RQ with at least 1 entry. Enforce all of this in set_rq_size(). Based on a patch by Eli Cohen <eli@mellanox.co.il>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-07RDMA/cma: Fix initialization of next_portSean Hefty
next_port should be between sysctl_local_port_range[0] and [1]. However, it is initially set to a random value with get_random_bytes(). If the value is negative when treated as a signed integer, next_port can end up outside the expected range because of the result of the % operator being negative. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-07IB/mlx4: Fix zeroing of rnr_retry value in ib_modify_qp()Jack Morgenstein
The code in __mlx4_ib_modify_qp() overwrites context->params1 after the RNR retry parameter is ORed in, which results in the RNR retry parameter always being set to 0. Fix this by moving where we OR in the value to later in the function, after the initial assignment of context->params1. Found by the Mellanox firmware group. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-07[IPV4]: Convert IPv4 devconf to an arrayHerbert Xu
This patch converts the ipv4_devconf config members (everything except sysctl) to an array. This allows easier manipulation which will be needed later on to provide better management of default config values. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-07IB/mthca, mlx4_core: Fix typo in commentRoland Dreier
s/signifant/significant/ Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-29IB/cm: Fix stale connection detectionSean Hefty
The ib_cm can incorrectly detect a stale connection (a new connection request for a QPN that is already connected) as a duplicate connection request. Separate the handling of potential duplicate REQs from stale connections. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-29IPoIB/cm: Fix performance regression on MellanoxMichael S. Tsirkin
commit 518b1646 ("IPoIB/cm: Fix SRQ WR leak") introduced a severe performance regression on Mellanox cards, because keeping a QP in the error state for extended periods of time moves hardware to the slow path (until the QP is destroyed). For example, MPI latency goes from ~3 usecs to ~7 usecs. Fix this by posting a send WR on one of the QPs that are being flushed, instead of using a separate drain QP that is kept in the error state. This fixes bug <https://bugs.openfabrics.org/show_bug.cgi?id=636>, reported and bisected by Scott Weitzenkamp at Cisco and debugged by Sasha Mikheev at Voltaire. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-29IB/mthca: Fix handling of send CQE with error for QPs connected to SRQMichael S. Tsirkin
mthca_free_err_wqe() currently treats both send and receive CQEs identically if a QP is using an SRQ. But for Tavor hardware, send CQEs with error can be chained together even if the RQ is part of SRQ, so we may miss some CQEs. Fix by following the WQE chain for all send CQEs even for non-SRQ QPs. This fixes crashes in IPoIB CM: <https://bugs.openfabrics.org//show_bug.cgi?id=604> Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-24IPoIB/cm: Drain cq in ipoib_cm_dev_stop()Michael S. Tsirkin
Since NAPI polling is disabled while ipoib_cm_dev_stop() is running, ipoib_cm_dev_stop() must poll the CQ itself in order to see the packets draining. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-24IPoIB/cm: Fix timeout check in ipoib_cm_dev_stop()Michael S. Tsirkin
time_after() was used backwards, so the timeout occurred immediately. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-24IB/ehca: Fix number of send WRs reported for new QPStefan Roscher
Due to a typo, the driver was reporting the wrong number of "actual send WRs" after ehca_create_qp(). Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-24IB/mlx4: Initialize send queue entry ownership bitsEli Cohen
We need to initialize the owner bit of send queue WQEs to hardware ownership whenever the QP is modified from reset to init, not just when the QP is first allocated. This avoids having the hardware process stale WQEs when the QP is moved to reset but not destroyed and then modified to init again. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-23IB/mlx4: Don't allocate RQ doorbell if using SRQRoland Dreier
If a QP is attached to a shared receive queue (SRQ), then it doesn't have a receive queue (RQ). So don't allocate an RQ doorbell (or map a doorbell from userspace for userspace QPs) for that QP. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-21Merge branch 'for-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: IB/cm: Improve local id allocation IPoIB/cm: Fix SRQ WR leak IB/ipoib: Fix typos in error messages IB/mlx4: Check if SRQ is full when posting receive IB/mlx4: Pass send queue sizes from userspace to kernel IB/mlx4: Fix check of opcode in mlx4_ib_post_send() mlx4_core: Fix array overrun in dump_dev_cap_flags() IB/mlx4: Fix RESET to RESET and RESET to ERROR transitions IB/mthca: Fix RESET to ERROR transition IB/mlx4: Set GRH:HopLimit when sending globally routed MADs IB/mthca: Set GRH:HopLimit when building MLX headers IB/mlx4: Fix check of max_qp_dest_rdma in modify QP IB/mthca: Fix use-after-free on device restart IB/ehca: Return proper error code if register_mr fails IPoIB: Handle P_Key table reordering IB/core: Use start_port() and end_port() IB/core: Add helpers for uncached GID and P_Key searches IB/ipath: Fix potential deadlock with multicast spinlocks IB/core: Free umem when mm is already gone
2007-05-21IB/cm: Improve local id allocationMichael S. Tsirkin
The IB CM uses an idr for local id allocations, with a running counter as start_id. This fails to generate distinct ids if 1. An id is constantly created and destroyed 2. A chunk of ids just beyond the current next_id value is occupied This in turn leads to an increased chance of connection request being mis-detected as a duplicate, sometimes for several retries, until next_id gets past the block of allocated ids. This has been observed in practice. As a fix, remember the last id allocated and start immediately above it. This also fixes a problem with the old code, where next_id might overflow and become negative. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Acked-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-21IPoIB/cm: Fix SRQ WR leakMichael S. Tsirkin
SRQ WR leakage has been observed with IPoIB/CM: e.g. flipping ports on and off will, with time, leak out all WRs and then all connections will start getting RNR NAKs. Fix this in the way suggested by spec: move the QP being destroyed to the error state, wait for "Last WQE Reached" event and then post WR on a "drain QP" connected to the same CQ. Once we observe a completion on the drain QP, it's safe to call ib_destroy_qp. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-21IB/ipoib: Fix typos in error messagesMichael S. Tsirkin
Trivial error message fixups. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-21Detach sched.h from mm.hAlexey Dobriyan
First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-20IB/mlx4: Check if SRQ is full when posting receiveRoland Dreier
Make mlx4_post_srq_recv() fail if the SRQ is full (head == tail). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-20IB/mlx4: Pass send queue sizes from userspace to kernelEli Cohen
Pass the number of WQEs for the send queue and their size from userspace to the kernel to avoid having to keep the QP size calculations in sync between the kernel driver and libmlx4. This fixes a bug seen with the current mlx4_ib driver and current libmlx4 caused by a difference in the calculated sizes for SQ WQEs. Also, this gives more flexibility for userspace to experiment with using multiple WQE BBs for a single SQ WQE. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mlx4: Fix check of opcode in mlx4_ib_post_send()Roland Dreier
wr->opcode is invalid if it's >= ARRAY_SIZE(mlx4_ib_opcode), not just strictly >. This was spotted by the Coverity checker (CID 1643). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mlx4: Fix RESET to RESET and RESET to ERROR transitionsMichael S. Tsirkin
According to the IB spec, a QP can be moved from RESET back to RESET or to the ERROR state, but mlx4 firmware does not support this and returns an error if we try. Fix the RESET to RESET transition by just returning 0 without doing anything, and fix RESET to ERROR by moving the QP from RESET to INIT with dummy parameters and then transitioning from INIT to ERROR. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mthca: Fix RESET to ERROR transitionMichael S. Tsirkin
According to the IB spec, a QP can be moved from RESET to the ERROR state, but mthca firmware does not support this and returns an error if we try. Work around this FW limitation by moving the QP from RESET to INIT with dummy parameters and then transitioning from INIT to ERROR. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mlx4: Set GRH:HopLimit when sending globally routed MADsRoland Dreier
This is the same issue discovered in mthca by Rolf Manderscheid <rvm@obsidianresearch.com>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mthca: Set GRH:HopLimit when building MLX headersRolf Manderscheid
Global CM packets used by rmda_cm were being sent with a GRH:hopLimit of zero, causing them to be dropped by the router. The problem is a missing initialization of the hop_limit field in mthca_read_ah(), which was called by build_mlx_header() when sending a MAD on QP1. Signed-off-by: Rolf Manderscheid <rvm@obsidianresearch.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mlx4: Fix check of max_qp_dest_rdma in modify QPEli Cohen
max_qp_dest_rdma is already in natural units - no need to shift. This was discovered by a test that deliberately requests more outstanding atomic operation than the device supports. Found by Sagi Rotem at Mellanox. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/mthca: Fix use-after-free on device restartAli Ayoub
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/ehca: Return proper error code if register_mr failsHoang-Nam Nguyen
Set the return code of ehca_register_mr() to ENOMEM if the corresponding firmware call fails due to out of resources. Some other error codes were explicitly mapped to EINVAL -- just remove those cases so they get mapped to the default case, which already returns EINVAL anyway. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IPoIB: Handle P_Key table reorderingYosef Etigin
SM reconfiguration or failover possibly causes a shuffling of the values in the P_Key table. Right now, IPoIB only queries for the P_Key index once when it creates the device QP, and hence there are problems if the index of a P_Key value changes. Fix this by using the PKEY_CHANGE event to trigger a recheck of the P_Key index. Signed-off-by: Yosef Etigin <yosefe@voltaire.com> Acked-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/core: Use start_port() and end_port()Roland Dreier
Clean up ib_query_port() and ib_modify_port() slightly by using the just-added start_port() and end_port() helpers. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/core: Add helpers for uncached GID and P_Key searchesYosef Etigin
Add ib_find_gid() and ib_find_pkey() functions that use uncached device queries. The calls might block but the returns are always up-to-date. Cache P_Key and GID table lengths in core to avoid extra port info queries. Signed-off-by: Yosef Etigin <yosefe@voltaire.com> Acked-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/ipath: Fix potential deadlock with multicast spinlocksRoland Dreier
Lockdep found the following potential deadlock between mcast_lock and n_mcast_grps_lock: mcast_lock is taken from both interrupt context and process context, so spin_lock_irqsave() must be used to take it. n_mcast_grps_lock is only taken from process context, so at first it seems safe to take it with plain spin_lock(); however, it also nests inside mcast_lock, and hence we could deadlock: cpu A cpu B ipath_mcast_add(): spin_lock_irq(&mcast_lock); ipath_mcast_detach(): spin_lock(&n_mcast_grps_lock); <enter interrupt> ipath_mcast_find(): spin_lock_irqsave(&mcast_lock); spin_lock(&n_mcast_grps_lock); Fix this by using spin_lock_irq() to take n_mcast_grps_lock. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-19IB/core: Free umem when mm is already goneEli Cohen
Free umem when task's mm is already destroyed by the time ib_umem_release gets called. Found by Dotan Barak at Mellanox. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-15Merge branch 'for-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: IPoIB/cm: Optimize stale connection detection IB/mthca: Set cleaned CQEs back to HW ownership when cleaning CQ IB/mthca: Fix posting >255 recv WRs for Tavor RDMA/cma: Add check to validate that cm_id is bound to a device RDMA/cma: Fix synchronization with device removal in cma_iw_handler RDMA/cma: Simplify device removal handling code IB/ehca: Disable scaling code by default, bump version number IB/ehca: Beautify sysfs attribute code and fix compiler warnings IB/ehca: Remove _irqsave, move #ifdef IB/ehca: Fix AQP0/1 QP number IB/ehca: Correctly set GRH mask bit in ehca_modify_qp() IB/ehca: Serialize hypervisor calls in ehca_register_mr() IB/ipath: Shadow the gpio_mask register IB/mlx4: Fix uninitialized spinlock for 32-bit archs mlx4_core: Remove unused doorbell_lock net: Trivial MLX4_DEBUG dependency fix.
2007-05-14IPoIB/cm: Optimize stale connection detectionMichael S. Tsirkin
In the presence of some running RX connections, we repeat queue_delayed_work calls each 4 RX WRs, which is a waste. It's enough to start stale task when a first passive connection is added, and rerun it every IPOIB_CM_RX_DELAY as long as there are outstanding passive connections. This removes some code from RX data path. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-14IB/mthca: Set cleaned CQEs back to HW ownership when cleaning CQMichael S. Tsirkin
mthca_cq_clean() updates the CQ consumer index without moving CQEs back to HW ownership. As a result, the same WRID might get reported twice, resulting in a use-after-free. This was observed in IPoIB CM. Fix by moving all freed CQEs to HW ownership. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=617> Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-14IB/mthca: Fix posting >255 recv WRs for TavorMichael S. Tsirkin
Fix posting lists of > 255 receive WRs for Tavor: rq.next_ind must be updated each doorbell, otherwise the next doorbell will use an incorrect index. Found by Ronni Zimmermann at Mellanox. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>