summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/core
Commit message (Collapse)AuthorAgeFilesLines
* mmap locking API: convert mmap_sem commentsMichel Lespinasse2020-06-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Convert comments that reference mmap_sem to reference mmap_lock instead. [akpm@linux-foundation.org: fix up linux-next leftovers] [akpm@linux-foundation.org: s/lockaphore/lock/, per Vlastimil] [akpm@linux-foundation.org: more linux-next fixups, per Michel] Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-13-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mmap locking API: use coccinelle to convert mmap_sem rwsem call sitesMichel Lespinasse2020-06-092-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change converts the existing mmap_sem rwsem calls to use the new mmap locking API instead. The change is generated using coccinelle with the following rule: // spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir . @@ expression mm; @@ ( -init_rwsem +mmap_init_lock | -down_write +mmap_write_lock | -down_write_killable +mmap_write_lock_killable | -down_write_trylock +mmap_write_trylock | -up_write +mmap_write_unlock | -downgrade_write +mmap_write_downgrade | -down_read +mmap_read_lock | -down_read_killable +mmap_read_lock_killable | -down_read_trylock +mmap_read_trylock | -up_read +mmap_read_unlock ) -(&mm->mmap_sem) +(mm) Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds2020-06-0534-1263/+1761
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull rdma updates from Jason Gunthorpe: "A more active cycle than most of the recent past, with a few large, long discussed works this time. The RNBD block driver has been posted for nearly two years now, and flowing through RDMA due to it also introducing a new ULP. The removal of FMR has been a recurring discussion theme for a long time. And the usual smattering of features and bug fixes. Summary: - Various small driver bugs fixes in rxe, mlx5, hfi1, and efa - Continuing driver cleanups in bnxt_re, hns - Big cleanup of mlx5 QP creation flows - More consistent use of src port and flow label when LAG is used and a mlx5 implementation - Additional set of cleanups for IB CM - 'RNBD' network block driver and target. This is a network block RDMA device specific to ionos's cloud environment. It brings strong multipath and resiliency capabilities. - Accelerated IPoIB for HFI1 - QP/WQ/SRQ ioctl migration for uverbs, and support for multiple async fds - Support for exchanging the new IBTA defiend ECE data during RDMA CM exchanges - Removal of the very old and insecure FMR interface from all ULPs and drivers. FRWR should be preferred for at least a decade now" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (247 commits) RDMA/cm: Spurious WARNING triggered in cm_destroy_id() RDMA/mlx5: Return ECE DC support RDMA/mlx5: Don't rely on FW to set zeros in ECE response RDMA/mlx5: Return an error if copy_to_user fails IB/hfi1: Use free_netdev() in hfi1_netdev_free() RDMA/hns: Uninitialized variable in modify_qp_init_to_rtr() RDMA/core: Move and rename trace_cm_id_create() IB/hfi1: Fix hfi1_netdev_rx_init() error handling RDMA: Remove 'max_map_per_fmr' RDMA: Remove 'max_fmr' RDMA/core: Remove FMR device ops RDMA/rdmavt: Remove FMR memory registration RDMA/mthca: Remove FMR support for memory registration RDMA/mlx4: Remove FMR support for memory registration RDMA/i40iw: Remove FMR leftovers RDMA/bnxt_re: Remove FMR leftovers RDMA/mlx5: Remove FMR leftovers RDMA/core: Remove FMR pool API RDMA/rds: Remove FMR support for memory registration RDMA/srp: Remove support for FMR memory registration ...
| * RDMA/cm: Spurious WARNING triggered in cm_destroy_id()Ka-Cheong Poon2020-06-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the cm_id state is IB_CM_REP_SENT when cm_destroy_id() is called, it calls cm_send_rej_locked(). In cm_send_rej_locked(), it calls cm_enter_timewait() and the state is changed to IB_CM_TIMEWAIT. Now back to cm_destroy_id(), it breaks from the switch statement, and the next call is WARN_ON(cm_id->state != IB_CM_IDLE). This triggers a spurious warning. Instead, the code should goto retest after returning from cm_send_rej_locked() to move the state to IDLE. Fixes: 67b3c8dceac6 ("RDMA/cm: Make sure the cm_id is in the IB_CM_IDLE state in destroy") Link: https://lore.kernel.org/r/1591191218-9446-1-git-send-email-ka-cheong.poon@oracle.com Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Move and rename trace_cm_id_create()Chuck Lever2020-06-022-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The restrack ID for an rdma_cm_id is not assigned until it is associated with a device. Here's an example I captured while testing NFS/RDMA's support for DEVICE_REMOVAL. The new tracepoint name is "cm_id_attach". <...>-4261 [001] 366.581299: cm_event_handler: cm.id=0 src=0.0.0.0:45919 dst=192.168.2.55:20049 tos=0 ADDR_ERROR (1/-19) <...>-4261 [001] 366.581304: cm_event_done: cm.id=0 src=0.0.0.0:45919 dst=192.168.2.55:20049 tos=0 ADDR_ERROR consumer returns 0 <...>-1950 [000] 366.581309: cm_id_destroy: cm.id=0 src=0.0.0.0:45919 dst=192.168.2.55:20049 tos=0 <...>-7 [001] 369.589400: cm_event_handler: cm.id=0 src=0.0.0.0:49023 dst=192.168.2.55:20049 tos=0 ADDR_ERROR (1/-19) <...>-7 [001] 369.589404: cm_event_done: cm.id=0 src=0.0.0.0:49023 dst=192.168.2.55:20049 tos=0 ADDR_ERROR consumer returns 0 <...>-1950 [000] 369.589407: cm_id_destroy: cm.id=0 src=0.0.0.0:49023 dst=192.168.2.55:20049 tos=0 <...>-4261 [001] 372.597650: cm_id_attach: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 device=mlx4_0 <...>-4261 [001] 372.597652: cm_event_handler: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 ADDR_RESOLVED (0/0) <...>-4261 [001] 372.597654: cm_event_done: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 ADDR_RESOLVED consumer returns 0 <...>-4261 [001] 372.597738: cm_event_handler: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 ROUTE_RESOLVED (2/0) <...>-4261 [001] 372.597740: cm_event_done: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 ROUTE_RESOLVED consumer returns 0 <...>-4691 [007] 372.600101: cm_qp_create: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 pd.id=2 qp_type=RC send_wr=4091 recv_wr=256 qp_num=530 rc=0 <...>-4691 [007] 372.600207: cm_send_req: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 qp_num=530 <...>-185 [002] 372.601212: cm_send_mra: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 <...>-185 [002] 372.601362: cm_send_rtu: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 <...>-185 [002] 372.601372: cm_event_handler: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 ESTABLISHED (9/0) <...>-185 [002] 372.601379: cm_event_done: cm.id=0 src=192.168.2.51:47492 dst=192.168.2.55:20049 tos=0 ESTABLISHED consumer returns 0 Fixes: ed999f820a6c ("RDMA/cma: Add trace points in RDMA Connection Manager") Link: https://lore.kernel.org/r/20200530174934.21362.56754.stgit@manet.1015granger.net Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Remove 'max_map_per_fmr'Jason Gunthorpe2020-06-021-1/+0
| | | | | | | | | | | | | | | | | | Now that FMR support is gone, this attribute can be deleted from all places. Link: https://lore.kernel.org/r/13-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Remove 'max_fmr'Jason Gunthorpe2020-06-021-1/+0
| | | | | | | | | | | | | | | | | | | | Now that FMR support is gone, this attribute can be deleted from all places. Link: https://lore.kernel.org/r/12-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Remove FMR device opsMax Gurtovoy2020-06-022-52/+0
| | | | | | | | | | | | | | | | | | After removing FMR support from all the RDMA ULPs and providers, there is no need to keep FMR operation for IB devices. Link: https://lore.kernel.org/r/11-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Remove FMR pool APIMax Gurtovoy2020-06-022-495/+1
| | | | | | | | | | | | | | | | | | This ancient and unsafe method for memory registration is no longer used by any RDMA based ULP. Remove the FMR pool API from the core driver. Link: https://lore.kernel.org/r/4-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Introduce shared CQ pool APIYamin Friedman2020-05-293-0/+178
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow a ULP to ask the core to provide a completion queue based on a least-used search on a per-device CQ pools. The device CQ pools grow in a lazy fashion when more CQs are requested. This feature reduces the amount of interrupts when using many QPs. Using shared CQs allows for more effcient completion handling. It also reduces the amount of overhead needed for CQ contexts. Test setup: Intel(R) Xeon(R) Platinum 8176M CPU @ 2.10GHz servers. Running NVMeoF 4KB read IOs over ConnectX-5EX across Spectrum switch. TX-depth = 32. The patch was applied in the nvme driver on both the target and initiator. Four controllers are accessed from each core. In the current test case we have exposed sixteen NVMe namespaces using four different subsystems (four namespaces per subsystem) from one NVM port. Each controller allocated X queues (RDMA QPs) and attached to Y CQs. Before this series we had X == Y, i.e for four controllers we've created total of 4X QPs and 4X CQs. In the shared case, we've created 4X QPs and only X CQs which means that we have four controllers that share a completion queue per core. Until fourteen cores there is no significant change in performance and the number of interrupts per second is less than a million in the current case. ================================================== |Cores|Current KIOPs |Shared KIOPs |improvement| |-----|---------------|--------------|-----------| |14 |2332 |2723 |16.7% | |-----|---------------|--------------|-----------| |20 |2086 |2712 |30% | |-----|---------------|--------------|-----------| |28 |1971 |2669 |35.4% | |================================================= |Cores|Current avg lat|Shared avg lat|improvement| |-----|---------------|--------------|-----------| |14 |767us |657us |14.3% | |-----|---------------|--------------|-----------| |20 |1225us |943us |23% | |-----|---------------|--------------|-----------| |28 |1816us |1341us |26.1% | ======================================================== |Cores|Current interrupts|Shared interrupts|improvement| |-----|------------------|-----------------|-----------| |14 |1.6M/sec |0.4M/sec |72% | |-----|------------------|-----------------|-----------| |20 |2.8M/sec |0.6M/sec |72.4% | |-----|------------------|-----------------|-----------| |28 |2.9M/sec |0.8M/sec |63.4% | ==================================================================== |Cores|Current 99.99th PCTL lat|Shared 99.99th PCTL lat|improvement| |-----|------------------------|-----------------------|-----------| |14 |67ms |6ms |90.9% | |-----|------------------------|-----------------------|-----------| |20 |5ms |6ms |-10% | |-----|------------------------|-----------------------|-----------| |28 |8.7ms |6ms |25.9% | |=================================================================== Performance improvement with sixteen disks (sixteen CQs per core) is comparable. Link: https://lore.kernel.org/r/1590568495-101621-3-git-send-email-yaminf@mellanox.com Signed-off-by: Yamin Friedman <yaminf@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Add protection for shared CQs used by ULPsYamin Friedman2020-05-291-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A pre-step for adding shared CQs. Add the infrastructure to prevent shared CQ users from altering the CQ configurations. For now all cqs are marked as private (non-shared). The core driver should use the new force functions to perform resize/destroy/moderation changes that are not allowed for users of shared CQs. Link: https://lore.kernel.org/r/1590568495-101621-2-git-send-email-yaminf@mellanox.com Signed-off-by: Yamin Friedman <yaminf@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Fix several reference count leaks.Qiushi Wu2020-05-291-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | kobject_init_and_add() takes reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Previous commit b8eb718348b8 ("net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject") fixed a similar problem. Link: https://lore.kernel.org/r/20200528030231.9082-1-wu000273@umn.edu Signed-off-by: Qiushi Wu <wu000273@umn.edu> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/cma: Provide ECE reject reasonLeon Romanovsky2020-05-272-6/+18
| | | | | | | | | | | | | | | | | | | | | | | | IBTA declares "vendor option not supported" reject reason in REJ messages if passive side doesn't want to accept proposed ECE options. Due to the fact that ECE is managed by userspace, there is a need to let users to provide such rejected reason. Link: https://lore.kernel.org/r/20200526103304.196371-7-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/cma: Connect ECE to rdma_acceptLeon Romanovsky2020-05-272-3/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The rdma_accept() is called by both passive and active sides of CMID connection to mark readiness to start data transfer. For passive side, this is called explicitly, for active side, it is called implicitly while receiving REP message. Provide ECE data to rdma_accept function needed for passive side to send that REP message. Link: https://lore.kernel.org/r/20200526103304.196371-6-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/cm: Send and receive ECE parameter over the wireLeon Romanovsky2020-05-272-5/+42
| | | | | | | | | | | | | | | | | | | | ECE parameters are exchanged through REQ->REP/SIDR_REP messages, this patch adds the data to provide to other side of CMID communication channel. Link: https://lore.kernel.org/r/20200526103304.196371-5-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/ucma: Deliver ECE parameters through UCMA eventsLeon Romanovsky2020-05-271-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Passive side of CMID connection receives ECE request through REQ message and needs to respond with relevant REP message which will be forwarded to active side. The UCMA events interface is responsible for such communication with the user space (librdmacm). Extend it to provide ECE wire data. Link: https://lore.kernel.org/r/20200526103304.196371-4-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/ucma: Extend ucma_connect to receive ECE parametersLeon Romanovsky2020-05-273-3/+33
| | | | | | | | | | | | | | | | | | | | Active side of CMID initiates connection through librdmacm's rdma_connect() and kernel's ucma_connect(). Extend UCMA interface to handle those new parameters. Link: https://lore.kernel.org/r/20200526103304.196371-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Use sizeof_field() helperGustavo A. R. Silva2020-05-274-10/+10
| | | | | | | | | | | | | | | | Make use of the sizeof_field() helper instead of an open-coded version. Link: https://lore.kernel.org/r/20200527144152.GA22605@embeddedor Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/cma: Fix ports memory leak in cma_configfsMaor Gottlieb2020-05-221-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The allocated ports structure in never freed. The free function should be called by release_cma_ports_group, but the group is never released since we don't remove its default group. Remove default groups when device group is deleted. Fixes: 045959db65c6 ("IB/cma: Add configfs for rdma_cm") Link: https://lore.kernel.org/r/20200521072650.567908-1-leon@kernel.org Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/uverbs: Introduce create/destroy QP commands over ioctlYishai Hadas2020-05-215-41/+405
| | | | | | | | | | | | | | | | | | | | Introduce create/destroy QP commands over the ioctl interface to let it be extended to get an asynchronous event FD. Link: https://lore.kernel.org/r/20200519072711.257271-8-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/uverbs: Introduce create/destroy WQ commands over ioctlYishai Hadas2020-05-215-24/+198
| | | | | | | | | | | | | | | | | | | | Introduce create/destroy WQ commands over the ioctl interface to let it be extended to get an asynchronous event FD. Link: https://lore.kernel.org/r/20200519072711.257271-7-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/uverbs: Introduce create/destroy SRQ commands over ioctlYishai Hadas2020-05-215-33/+238
| | | | | | | | | | | | | | | | | | | | Introduce create/destroy SRQ commands over the ioctl interface to let it be extended to get an asynchronous event FD. Link: https://lore.kernel.org/r/20200519072711.257271-6-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/uverbs: Extend CQ to get its own asynchronous event FDYishai Hadas2020-05-212-3/+24
| | | | | | | | | | | | | | | | | | | | | | Extend CQ to get its own asynchronous event FD. The event FD is an optional attribute, in case wasn't given the ufile event FD will be used. Link: https://lore.kernel.org/r/20200519072711.257271-4-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/uverbs: Refactor related objects to use their own asynchronous event FDYishai Hadas2020-05-214-9/+39
| | | | | | | | | | | | | | | | | | | | | | Refactor related objects to use their own asynchronous event FD. The ufile event FD will be the default in case an object won't have its own event FD. Link: https://lore.kernel.org/r/20200519072711.257271-3-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/core: Allow the ioctl layer to abort a fully created uobjectJason Gunthorpe2020-05-216-25/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While creating a uobject every create reaches a point where the uobject is fully initialized. For ioctls that go on to copy_to_user this means they need to open code the destruction of a fully created uobject - ie the RDMA_REMOVE_DESTROY sort of flow. Open coding this creates bugs, eg the CQ does not properly flush the events list when it does its error unwind. Provide a uverbs_finalize_uobj_create() function which indicates that the uobject is fully initialized and that abort should call to destroy_hw to destroy the uobj->object and related. Methods can call this function if they go on to have error cases after setting uobj->object. Once done those error cases can simply do return, without an error unwind. Link: https://lore.kernel.org/r/20200519072711.257271-2-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * Merge tag 'v5.7-rc6' into rdma.git for-nextJason Gunthorpe2020-05-217-31/+67
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux 5.7-rc6 Conflict in drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c resolved by deleting dr_cq_event, matching how netdev resolved it. Required for dependencies in the following patches. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/core: Consolidate ib_create_srq flowsJason Gunthorpe2020-05-172-41/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The uverbs layer largely duplicate the code in ib_create_srq(), with the slight difference that it passes in a udata. Move all the code together into ib_create_srq_user() and provide an inline for kernel users, similar to other create calls. Link: https://lore.kernel.org/r/20200506082444.14502-6-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/uverbs: Fix create WQ to use the given user handleYishai Hadas2020-05-171-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix create WQ to use the given user handle, in addition dropped some duplicated code from this flow. Fixes: fd3c7904db6e ("IB/core: Change idr objects to use the new schema") Fixes: f213c0527210 ("IB/uverbs: Add WQ support") Link: https://lore.kernel.org/r/20200506082444.14502-9-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/uverbs: Cleanup wq/srq context usage from uverbs layerYishai Hadas2020-05-171-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both wq_context and srq_context are some leftover from the past in uverbs layer, they are not really in use, drop them. Link: https://lore.kernel.org/r/20200506082444.14502-5-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Increment the refcount inside cm_find_listen()Jason Gunthorpe2020-05-121-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | All callers need the 'get', so do it in a central place before returning the pointer. Link: https://lore.kernel.org/r/20200506074701.9775-11-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Remove needless cm_id variableJason Gunthorpe2020-05-121-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | Just put the expression in the only reader Link: https://lore.kernel.org/r/20200506074701.9775-10-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Remove the cm_free_id() wrapper functionJason Gunthorpe2020-05-121-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | Just call xa_erase directly during cm_destroy_id() Link: https://lore.kernel.org/r/20200506074701.9775-9-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Make find_remote_id() return a cm_id_privateJason Gunthorpe2020-05-121-15/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | The only caller doesn't care about the timewait, so acquire and return the cm_id_private from the function. Link: https://lore.kernel.org/r/20200506074701.9775-8-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Add a note explaining how the timewait is eventually freedJason Gunthorpe2020-05-121-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The way the cm_timewait_info is converted into a work and then freed is very subtle and surprising, add a note clarifying the lifetime here. Link: https://lore.kernel.org/r/20200506074701.9775-7-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Pass the cm_id_private into cm_cleanup_timewaitJason Gunthorpe2020-05-121-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also rename it to cm_remove_remote(). This function now removes the tracking of the remote ID/QPN in the redblack trees from a cm_id_private. Replace a open-coded version with a call. The open coded version was deleting only the remote_id, however at this call site the qpn can not have been in the RB tree either, so the cm_remove_remote() will do the same. Link: https://lore.kernel.org/r/20200506074701.9775-6-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Pull duplicated code into cm_queue_work_unlock()Jason Gunthorpe2020-05-121-102/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While unlocking a spinlock held by the caller is a disturbing pattern, this extensively duplicated code is even worse. Pull all the duplicates into a function and explain the purpose of the algorithm. The on creation side call in cm_req_handler() which is different has been micro-optimized on the basis that the work_count == -1 during creation, remove that and just use the normal function. Link: https://lore.kernel.org/r/20200506074701.9775-5-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Remove unused store to ret in cm_rej_handlerDanit Goldberg2020-05-121-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | The 'goto out' label doesn't read ret, so don't set it. Link: https://lore.kernel.org/r/20200506074701.9775-4-leon@kernel.org Signed-off-by: Danit Goldberg <danitg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cm: Remove return code from add_cm_id_to_port_listJason Gunthorpe2020-05-121-14/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | This cannot happen, all callers pass in one of the two pointers. Use a WARN_ON guard instead. Link: https://lore.kernel.org/r/20200506074701.9775-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/addr: Mark addr_resolve as might_sleep()Jason Gunthorpe2020-05-121-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Under one path through ib_nl_fetch_ha() this calls nlmsg_new(GFP_KERNEL) which is a sleeping call. This is a very rare path, so mark fetch_ha() and the module external entry point that conditionally calls through to fetch_ha() as might_sleep(). Link: https://lore.kernel.org/r/20200506074701.9775-2-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/ucma: Return stable IB device index as identifierLeon Romanovsky2020-05-121-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The librdmacm uses node_guid as identifier to correlate between IB devices and CMA devices. However FW resets cause to such "connection" to be lost and require from the user to restart its application. Extend UCMA to return IB device index, which is stable identifier. Link: https://lore.kernel.org/r/20200504132541.355710-1-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cma: Initialize the flow label of CM's route path recordMark Zhang2020-05-061-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If flow label is not set by the user or it's not IPv4, initialize it with the cma src/dst based on the "Kernighan and Ritchie's hash function". Link: https://lore.kernel.org/r/20200504051935.269708-5-leon@kernel.org Signed-off-by: Mark Zhang <markz@mellanox.com> Reviewed-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/core: Consider flow label when building skbMaor Gottlieb2020-05-061-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use rdma_flow_label_to_udp_sport to calculate the UDP source port of the RoCEV2 packet. Link: https://lore.kernel.org/r/20200504051935.269708-3-leon@kernel.org Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA: Allow ib_client's to fail when add() is calledJason Gunthorpe2020-05-068-66/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a client is added it isn't allowed to fail, but all the client's have various failure paths within their add routines. This creates the very fringe condition where the client was added, failed during add and didn't set the client_data. The core code will then still call other client_data centric ops like remove(), rename(), get_nl_info(), and get_net_dev_by_params() with NULL client_data - which is confusing and unexpected. If the add() callback fails, then do not call any more client ops for the device, even remove. Remove all the now redundant checks for NULL client_data in ops callbacks. Update all the add() callbacks to return error codes appropriately. EOPNOTSUPP is used for cases where the ULP does not support the ib_device - eg because it only works with IB. Link: https://lore.kernel.org/r/20200421172440.387069-1-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Acked-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/mad: Remove snoop interfaceMaor Gottlieb2020-05-061-233/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | Snoop interface is not used. Remove it. Link: https://lore.kernel.org/r/20200413132408.931084-1-leon@kernel.org Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/core: Get xmit slave for LAGMaor Gottlieb2020-05-021-18/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a call to rdma_lag_get_ah_roce_slave() when the address handle is created. Lower driver can use it to select the QP's affinity port. Link: https://lore.kernel.org/r/20200430192146.12863-15-maorg@mellanox.com Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/core: Add LAG functionalityMaor Gottlieb2020-05-022-1/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support to get the RoCE LAG xmit slave by building skb of the RoCE packet and call to master_get_xmit_slave. If driver wants to get the slave assume all slaves are available, then need to set RDMA_LAG_FLAGS_HASH_ALL_SLAVES in flags. Link: https://lore.kernel.org/r/20200430192146.12863-14-maorg@mellanox.com Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA: Group create AH arguments in structMaor Gottlieb2020-05-021-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Following patch adds additional argument to the create AH function, so it make sense to group ah_attr and flags arguments in struct. Link: https://lore.kernel.org/r/20200430192146.12863-13-maorg@mellanox.com Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Acked-by: Devesh Sharma <devesh.sharma@broadcom.com> Acked-by: Gal Pressman <galpress@amazon.com> Acked-by: Weihang Li <liweihang@huawei.com> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/rw: use DIV_ROUND_UP to calculate nr_opsMax Gurtovoy2020-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Don't open-code DIV_ROUND_UP() kernel macro. Link: https://lore.kernel.org/r/20200413133905.933343-1-leon@kernel.org Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA/cma: Limit the scope of rdma_is_consumer_reject functionLeon Romanovsky2020-04-141-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | The function is local to cma.c, so let's limit its scope. Link: https://lore.kernel.org/r/20200413132323.930869-1-leon@kernel.org Reviewed-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | IB: Fix some documentation warningsMauro Carvalho Chehab2020-04-141-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Parsing verbs.c with kernel-doc produce some warnings: ./drivers/infiniband/core/verbs.c:2579: WARNING: Unexpected indentation. ./drivers/infiniband/core/verbs.c:2581: WARNING: Block quote ends without a blank line; unexpected unindent. ./drivers/infiniband/core/verbs.c:2613: WARNING: Unexpected indentation. ./drivers/infiniband/core/verbs.c:2579: WARNING: Unexpected indentation. ./drivers/infiniband/core/verbs.c:2581: WARNING: Block quote ends without a blank line; unexpected unindent. ./drivers/infiniband/core/verbs.c:2613: WARNING: Unexpected indentation. Address them by adding an extra blank line and converting the parameters on one of the arguments to a table. Link: https://lore.kernel.org/r/4c5466d0f450c5a9952138150c3485740b37f9c5.1586881715.git.mchehab+huawei@kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-19 05:05:43 +0000