summaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw/mlx4/qp.c
AgeCommit message (Collapse)Author
2020-11-27RDMA/core: Allow drivers to disable restrack DBLeon Romanovsky
Driver QP types are special case with no IBTA restrictions. For example, EFA implemented creation of this QP type as regular one, while mlx5 separated create to two step: create and modify. That separation causes to the situation where DC QP (mlx5) is always added to the same xarray index zero. This change allows to drivers like mlx5 simply disable restrack DB tracking, but it doesn't disable kref on the memory. Fixes: 52e0a118a203 ("RDMA/restrack: Track driver QP types in resource tracker") Link: https://lore.kernel.org/r/20201117070148.1974114-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-11-26RDMA/mlx4: Enable querying AH for XRC QP typesAvihai Horon
Address handle is set for connected QP types such as RC and UC, and thus can also be queried. Since XRC QP types INI and TGT are connected, it should be possible to query their address handle as well. Until now it was not the case, and although the firmware supported it, the driver allowed querying the address handle only for RC and UC. Hence, we enable it now for INI and TGT QPs as well. Link: https://lore.kernel.org/r/20201115121425.139833-3-leon@kernel.org Reviewed-by: Maor Gottlieb <maorg@nvidia.com> Signed-off-by: Avihai Horon <avihaih@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-10-26RDMA: Check create_flags during create_qpJason Gunthorpe
Each driver should check that the QP attrs create_flags is supported. Unfortuantely when create_flags was added to the QP attrs the drivers were not updated. uverbs_ex_cmd_mask was used to block it - even though kernel drivers use these flags too. Check that flags is zero in all drivers that don't use it, remove IB_USER_VERBS_EX_CMD_CREATE_QP from uverbs_ex_cmd_mask. Fix the error code to be EOPNOTSUPP. Link: https://lore.kernel.org/r/8-v1-caa70ba3d1ab+1436e-ucmd_mask_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-10-26RDMA: Check attr_mask during modify_qpJason Gunthorpe
Each driver should check that it can support the provided attr_mask during modify_qp. IB_USER_VERBS_EX_CMD_MODIFY_QP was being used to block modify_qp_ex because the driver didn't check RATE_LIMIT. Link: https://lore.kernel.org/r/6-v1-caa70ba3d1ab+1436e-ucmd_mask_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-09-29RDMA/drivers: Remove udata check from special QPLeon Romanovsky
GSI QP can't be created from the user space, hence the udata check is always false (udata == NULL). Remove that check and simplify the flow. Link: https://lore.kernel.org/r/20200926102450.2966017-9-leon@kernel.org Reviewed-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-09-29RDMA/mlx4: Prepare QP allocation to remove from the driverLeon Romanovsky
Since all mlx4 QP have same storage type, move the QP allocation to be in one place. This change is preparation to removal of such allocation from the driver. Link: https://lore.kernel.org/r/20200926102450.2966017-7-leon@kernel.org Reviewed-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-09-29RDMA/mlx4: Embed GSI QP into general mlx4_ib QPLeon Romanovsky
Refactor the storage struct of mlx4 GSI QP to be embedded in mlx4_ib QP. This allows to remove internal memory allocation of QP struct which is hidden inside the mlx4_ib_create_qp() flow. Link: https://lore.kernel.org/r/20200926102450.2966017-6-leon@kernel.org Reviewed-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-09-17RDMA: Convert RWQ table logic to ib_core allocation schemeLeon Romanovsky
Move struct ib_rwq_ind_table allocation to ib_core. Link: https://lore.kernel.org/r/20200902081623.746359-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-09-11RDMA/mlx4: Use ib_umem_num_dma_blocks()Jason Gunthorpe
For the calls linked to mlx4_ib_umem_calc_optimal_mtt_size() use ib_umem_num_dma_blocks() inside the function, it is just some weird static default. All other places are just using it with PAGE_SIZE, switch to ib_umem_num_dma_blocks(). As this is the last call site, remove ib_umem_num_count(). Link: https://lore.kernel.org/r/15-v2-270386b7e60b+28f4-umem_1_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-09-09RDMA: Restore ability to return error for destroy WQLeon Romanovsky
Make this interface symmetrical to other destroy paths. Fixes: a49b1dc7ae44 ("RDMA: Convert destroy_wq to be void") Link: https://lore.kernel.org/r/20200907120921.476363-9-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-07-16treewide: Remove uninitialized_var() usageKees Cook
Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \ xargs perl -pi -e \ 's/\buninitialized_var\(([^\)]+)\)/\1/g; s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs Signed-off-by: Kees Cook <keescook@chromium.org>
2020-05-12IB/mlx4: Test return value of calls to ib_get_cached_pkeyJack Morgenstein
In the mlx4_ib_post_send() flow, some functions call ib_get_cached_pkey() without checking its return value. If ib_get_cached_pkey() returns an error code, these functions should return failure. Fixes: 1ffeb2eb8be9 ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support") Fixes: 225c7b1feef1 ("IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters") Fixes: e622f2f4ad21 ("IB: split struct ib_send_wr") Link: https://lore.kernel.org/r/20200426075921.130074-1-leon@kernel.org Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-03-04RDMA/providers: Fix return value when QP type isn't supportedKamal Heib
The proper return code is "-EOPNOTSUPP" when the requested QP type is not supported by the provider. Link: https://lore.kernel.org/r/20200130082049.463-1-kamalheib1@gmail.com Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-21Merge tag 'rds-odp-for-5.5' into rdma.git for-nextJason Gunthorpe
From https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma Leon Romanovsky says: ==================== Use ODP MRs for kernel ULPs The following series extends MR creation routines to allow creation of user MRs through kernel ULPs as a proxy. The immediate use case is to allow RDS to work over FS-DAX, which requires ODP (on-demand-paging) MRs to be created and such MRs were not possible to create prior this series. The first part of this patchset extends RDMA to have special verb ib_reg_user_mr(). The common use case that uses this function is a userspace application that allocates memory for HCA access but the responsibility to register the memory at the HCA is on an kernel ULP. This ULP acts as an agent for the userspace application. The second part provides advise MR functionality for ULPs. This is integral part of ODP flows and used to trigger pagefaults in advance to prepare memory before running working set. The third part is actual user of those in-kernel APIs. ==================== * tag 'rds-odp-for-5.5': net/rds: Use prefetch for On-Demand-Paging MR net/rds: Handle ODP mr registration/unregistration net/rds: Detect need of On-Demand-Paging memory registration RDMA/mlx5: Fix handling of IOVA != user_va in ODP paths IB/mlx5: Mask out unsupported ODP capabilities for kernel QPs RDMA/mlx5: Don't fake udata for kernel path IB/mlx5: Add ODP WQE handlers for kernel QPs IB/core: Add interface to advise_mr for kernel users IB/core: Introduce ib_reg_user_mr IB: Allow calls to ib_umem_get from kernel ULPs Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-16IB: Allow calls to ib_umem_get from kernel ULPsMoni Shoua
So far the assumption was that ib_umem_get() and ib_umem_odp_get() are called from flows that start in UVERBS and therefore has a user context. This assumption restricts flows that are initiated by ULPs and need the service that ib_umem_get() provides. This patch changes ib_umem_get() and ib_umem_odp_get() to get IB device directly by relying on the fact that both UVERBS and ULPs sets that field correctly. Reviewed-by: Guy Levi <guyle@mellanox.com> Signed-off-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2020-01-03RDMA/mlx4: use true,false for bool variablezhengbin
Fixes coccicheck warning: drivers/infiniband/hw/mlx4/qp.c:852:2-14: WARNING: Assignment of 0/1 to bool variable drivers/infiniband/hw/mlx4/qp.c:3087:3-10: WARNING: Assignment of 0/1 to bool variable Link: https://lore.kernel.org/r/1577176812-2238-5-git-send-email-zhengbin13@huawei.com Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhengbin <zhengbin13@huawei.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-17IB/umem: remove the dmasync argument to ib_umem_getChristoph Hellwig
The argument is always ignored, so remove it. Link: https://lore.kernel.org/r/20191113073214.9514-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Acked-by: Michal Kalderon <michal.kalderon@marvell.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-25RDMA/mlx4: Annotate boolean arguments as bool and not intLeon Romanovsky
Information provided by qp_has_rq() and used latter is boolean, so update callers to proper type. Link: https://lore.kernel.org/r/20190704130936.8705-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-25RDMA/mlx4: Separate creation of RWQ and QPLeon Romanovsky
The mlx4 WQ is implemented with HW QP without special HW object. Current implementation which tried to reuse the code did it with common QP creation flows. Such decision caused to the absence of mlx4_ib_wq struct, which is needed to ensure proper allocation of ib_wq inside of IB/core. Separate create_qp_common() to pure QP flow and to create_rq() for RWQ. Link: https://lore.kernel.org/r/20190704130936.8705-2-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-20RDMA: Check umem pointer validity prior to releaseLeon Romanovsky
Update ib_umem_release() to behave similarly to kfree() and allow submitting NULL pointer as safe input to this function. Fixes: a52c8e2469c3 ("RDMA: Clean destroy CQ in drivers do not return errors") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-06-20RDMA: Convert destroy_wq to be voidLeon Romanovsky
All callers of destroy WQ are always success and there is no need to check their return value, so convert destroy_wq to be void. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-05-09Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma updates from Jason Gunthorpe: "This has been a smaller cycle than normal. One new driver was accepted, which is unusual, and at least one more driver remains in review on the list. Summary: - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4, vmw_pvrdma - Many patches from MatthewW converting radix tree and IDR users to use xarray - Introduction of tracepoints to the MAD layer - Build large SGLs at the start for DMA mapping and get the driver to split them - Generally clean SGL handling code throughout the subsystem - Support for restricting RDMA devices to net namespaces for containers - Progress to remove object allocation boilerplate code from drivers - Change in how the mlx5 driver shows representor ports linked to VFs - mlx5 uapi feature to access the on chip SW ICM memory - Add a new driver for 'EFA'. This is HW that supports user space packet processing through QPs in Amazon's cloud" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits) RDMA/ipoib: Allow user space differentiate between valid dev_port IB/core, ipoib: Do not overreact to SM LID change event RDMA/device: Don't fire uevent before device is fully initialized lib/scatterlist: Remove leftover from sg_page_iter comment RDMA/efa: Add driver to Kconfig/Makefile RDMA/efa: Add the efa module RDMA/efa: Add EFA verbs implementation RDMA/efa: Add common command handlers RDMA/efa: Implement functions that submit and complete admin commands RDMA/efa: Add the ABI definitions RDMA/efa: Add the com service API definitions RDMA/efa: Add the efa_com.h file RDMA/efa: Add the efa.h header file RDMA/efa: Add EFA device definitions RDMA: Add EFA related definitions RDMA/umem: Remove hugetlb flag RDMA/bnxt_re: Use core helpers to get aligned DMA address RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks RDMA/umem: Add API to find best driver supported page size in an MR ...
2019-05-03RDMA: Introduce and use GID attr helper to read RoCE L2 fieldsParav Pandit
Instead of RoCE drivers figuring out vlan, smac fields while working on QP/AH, provide a helper routine to read the L2 fields such as vlan_id and source mac address. This moves logic from mlx5 driver to core for wider usage for RoCE ports. This is a preparation patch to allow detaching netdev in subsequent patch. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08drivers: Remove explicit invocations of mmiowb()Will Deacon
mmiowb() is now implied by spin_unlock() on architectures that require it, so there is no reason to call it from driver code. This patch was generated using coccinelle: @mmiowb@ @@ - mmiowb(); and invoked as: $ for d in drivers include/linux/qed sound; do \ spatch --include-headers --sp-file mmiowb.cocci --dir $d --in-place; done NOTE: mmiowb() has only ever guaranteed ordering in conjunction with spin_unlock(). However, pairing each mmiowb() removal in this patch with the corresponding call to spin_unlock() is not at all trivial, so there is a small chance that this change may regress any drivers incorrectly relying on mmiowb() to order MMIO writes between CPUs using lock-free synchronisation. If you've ended up bisecting to this commit, you can reintroduce the mmiowb() calls using wmb() instead, which should restore the old behaviour on all architectures other than some esoteric ia64 systems. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-01IB: Pass only ib_udata in function prototypesShamir Rabinovitch
Now when ib_udata is passed to all the driver's object create/destroy APIs the ib_udata will carry the ib_ucontext for every user command. There is no need to also pass the ib_ucontext via the functions prototypes. Make ib_udata the only argument psssed. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01IB: Remove 'uobject->context' dependency in object destroy APIsShamir Rabinovitch
Now that we have the udata passed to all the ib_xxx object destroy APIs and the additional macro 'rdma_udata_to_drv_context' to get the ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally start to remove the dependency of the drivers in the ib_xxx->uobject->context. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01IB: Pass uverbs_attr_bundle down ib_x destroy pathShamir Rabinovitch
The uverbs_attr_bundle with the ucontext is sent down to the drivers ib_x destroy path as ib_udata. The next patch will use the ib_udata to free the drivers destroy path from the dependency in 'uobject->context' as we already did for the create path. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIsShamir Rabinovitch
Now when we have the udata passed to all the ib_xxx object creation APIs and the additional macro 'rdma_udata_to_drv_context' to get the ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally start to remove the dependency of the drivers in the ib_xxx->uobject->context. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-10IB/{core,hw}: Have ib_umem_get extract the ib_ucontext from ib_udataJason Gunthorpe
ib_umem_get() can only be called in a method callback, which always has a udata parameter. This allows ib_umem_get() to derive the ucontext pointer directly from the udata without requiring the drivers to find it in some way or another. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
2018-12-20IB/mlx4: Remove set but not used variable 'pd'YueHaibing
Fixes gcc '-Wunused-but-set-variable' warning: drivers/infiniband/hw/mlx4/qp.c: In function '_mlx4_ib_destroy_qp': drivers/infiniband/hw/mlx4/qp.c:1612:22: warning: variable 'pd' set but not used [-Wunused-but-set-variable] Fixes: e00b64f7c54c ("RDMA: Cleanup undesired pd->uobject usage") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-18RDMA: Cleanup undesired pd->uobject usageShamir Rabinovitch
Drivers should be using udata to determine if a method is invoked from user space or kernel space. A pd does not necessarily say a different objects is kernel or user. Transforming the tests to use udata eliminates a large number of uobject references from the drivers. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-18IB/mlx4: Utilize macro to calculate SQ spare sizeYuval Shaia
The macro MLX4_IB_SQ_HEADROOM calculates the spare room needed to be left. Use it instead of hard-coding the HW prefetch size. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-11IB/mlx4: Remove unneeded NULL checkYuval Shaia
NULL check for kfree is unnecessary, remove it. Fixes: b42dde478bca ("IB/mlx4: Rework special QP creation error path") Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-10-03RDMA: Remove unused parameter from ib_modify_qp_is_ok()Kamal Heib
The ll parameter is not used in ib_modify_qp_is_ok(), so remove it. Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-30IB/mlx4: Use 4K pages for kernel QP's WQE bufferJack Morgenstein
In the current implementation, the driver tries to allocate contiguous memory, and if it fails, it falls back to 4K fragmented allocation. Once the memory is fragmented, the first allocation might take a lot of time, and even fail, which can cause connection failures. This patch changes the logic to always allocate with 4K granularity, since it's more robust and more likely to succeed. This patch was tested with Lustre and no performance degradation was observed. Note: This commit eliminates the "shrinking WQE" feature. This feature depended on using vmap to create a virtually contiguous send WQ. vmap use was abandoned due to problems with several processors (see the commit cited below). As a result, shrinking WQE was available only with physically contiguous send WQs. Allocating such send WQs caused the problems described above. Therefore, as a side effect of eliminating the use of large physically contiguous send WQs, the shrinking WQE feature became unavailable. Warning example: worker/20:1: page allocation failure: order:8, mode:0x80d0 CPU: 20 PID: 513 Comm: kworker/20:1 Tainted: G OE ------------ Workqueue: ib_cm cm_work_handler [ib_cm] Call Trace: [<ffffffff81686d81>] dump_stack+0x19/0x1b [<ffffffff81186160>] warn_alloc_failed+0x110/0x180 [<ffffffff8118a954>] __alloc_pages_nodemask+0x9b4/0xba0 [<ffffffff811ce868>] alloc_pages_current+0x98/0x110 [<ffffffff81184fae>] __get_free_pages+0xe/0x50 [<ffffffff8133f6fe>] swiotlb_alloc_coherent+0x5e/0x150 [<ffffffff81062551>] x86_swiotlb_alloc_coherent+0x41/0x50 [<ffffffffa056b4c4>] mlx4_buf_direct_alloc.isra.7+0xc4/0x180 [mlx4_core] [<ffffffffa056b73b>] mlx4_buf_alloc+0x1bb/0x260 [mlx4_core] [<ffffffffa0b15496>] create_qp_common+0x536/0x1000 [mlx4_ib] [<ffffffff811c6ef7>] ? dma_pool_free+0xa7/0xd0 [<ffffffffa0b163c1>] mlx4_ib_create_qp+0x3b1/0xdc0 [mlx4_ib] [<ffffffffa0b01bc2>] ? mlx4_ib_create_cq+0x2d2/0x430 [mlx4_ib] [<ffffffffa0b21f20>] mlx4_ib_create_qp_wrp+0x10/0x20 [mlx4_ib] [<ffffffffa08f152a>] ib_create_qp+0x7a/0x2f0 [ib_core] [<ffffffffa06205d4>] rdma_create_qp+0x34/0xb0 [rdma_cm] [<ffffffffa08275c9>] kiblnd_create_conn+0xbf9/0x1950 [ko2iblnd] [<ffffffffa074077a>] ? cfs_percpt_unlock+0x1a/0xb0 [libcfs] [<ffffffffa0835519>] kiblnd_passive_connect+0xa99/0x18c0 [ko2iblnd] Fixes: 73898db04301 ("net/mlx4: Avoid wrong virtual mappings") Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-30RDMA, core and ULPs: Declare ib_post_send() and ib_post_recv() arguments constBart Van Assche
Since neither ib_post_send() nor ib_post_recv() modify the data structure their second argument points at, declare that argument const. This change makes it necessary to declare the 'bad_wr' argument const too and also to modify all ULPs that call ib_post_send(), ib_post_recv() or ib_post_srq_recv(). This patch does not change any functionality but makes it possible for the compiler to verify whether the ib_post_(send|recv|srq_recv) really do not modify the posted work request. To make this possible, only one cast had to be introduce that casts away constness, namely in rpcrdma_post_recvs(). The only way I can think of to avoid that cast is to introduce an additional loop in that function or to change the data type of bad_wr from struct ib_recv_wr ** into int (an index that refers to an element in the work request list). However, both approaches would require even more extensive changes than this patch. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-30RDMA: Constify the argument of the work request conversion functionsBart Van Assche
When posting a send work request, the work request that is posted is not modified by any of the RDMA drivers. Make this explicit by constifying most ib_send_wr pointers in RDMA transport drivers. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-04IB/mlx4: Test port number before querying type.Tarick Bedeir
rdma_ah_find_type() can reach into ib_device->port_immutable with a potentially out-of-bounds port number, so check that the port number is valid first. Fixes: 44c58487d51a ("IB/core: Define 'ib' and 'roce' rdma_ah_attr types") Signed-off-by: Tarick Bedeir <tarick@google.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-25IB/mlx4: Add support for drain SQ & RQYishai Hadas
This patch follows the logic from ib_core but considers the internal device state upon executing the involved commands. Specifically, Upon internal error state modify QP to an error state can be assumed to be success as each in-progress WR going to be flushed in error in any case as expected by that modify command. In addition, As the drain should never fail the driver makes sure that post_send/recv will succeed even if the device is already in an internal error state. As such once the driver will supply the simulated/SW CQEs the CQE for the drain WR will be handled as well. In case of an internal error state the CQE for the drain WR may be completed as part of the main task that handled the error state or by the task that issued the drain WR. As the above depends on scheduling the code takes the relevant locks and actions to make sure that the completion handler for that WR will always be called after that the post_send/recv were issued but not in parallel to the other task that handles the error flow. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18RDMA: Convert drivers to use the AH's sgid_attr in post_wr pathsParav Pandit
For UD the drivers were doing a sgid_index lookup into the cache to get the attrs, however we can now directly access the same attrs stores in the ib_ah instead and remove the lookup. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18IB/mlx4: Use GID attribute from ah attributeParav Pandit
While converting GID index from attribute to that of the HCA, GID attribute is available from the ah_attr. Make use of GID attribute to simplify the code and also avoid avoid GID query. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18RDMA: Convert drivers to use sgid_attr instead of sgid_indexParav Pandit
The core code now ensures that all driver callbacks that receive an rdma_ah_attrs will have a sgid_attr's pointer if there is a GRH present. Drivers can use this pointer instead of calling a query function with sgid_index. This simplifies the drivers and also avoids races where a gid_index lookup may return different data if it is changed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-12treewide: kmalloc() -> kmalloc_array()Kees Cook
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-05-24IB/core: Reduce the places that use zgidParav Pandit
Instead of open coding memcmp() to check whether a given GID is zero or not, use a helper function to do so, and replace instances of memcpy(z,&zgid) with memset. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-27RDMA/mlx4: Add missed RSS hash inner header flagLeon Romanovsky
Despite being advertised to user space application, the RSS inner header flag was filtered by checks at the beginning of QP creation routine. Cc: <stable@vger.kernel.org> # 4.15 Fixes: 4d02ebd9bbbd ("IB/mlx4: Fix RSS hash fields restrictions") Fixes: 07d84f7b6adf ("IB/mlx4: Add support to RSS hash for inner headers") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-04-03IB/providers: Avoid null netdev check for RoCEParav Pandit
Now that IB core GID cache ensures that all RoCE entries have an associated netdev remove null checks from the provider drivers for clarity. Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-03IB/providers: Avoid zero GID check for RoCEParav Pandit
Now that the IB core GID cache ensures that a zero GID doesn't exist in the GID table remove zero GID checks from the provider drivers for clarity. Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-21IB/mlx4: Eliminate duplicate barriers on weakly-ordered archsSinan Kaya
Code includes wmb() followed by writel(). writel() already has a barrier on some architectures like arm64. This ends up CPU observing two barriers back to back before executing the register write. Since code already has an explicit barrier call, changing writel() to writel_relaxed(). Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15IB/mlx4: Add Scatter FCS support over WQ creationGuy Levi
As a default, for Ethernet packets, the device scatters only the payload of ingress packets. The scatter FCS feature lets the user to get the FCS (Ethernet's frame check sequence) in the received WR's buffer as a 4 Bytes trailer following the packet's payload. Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Guy Levi <guyle@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-09-11 01:56:09 +0000