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ce8e8087cf
mirror_ubuntu-kernels/drivers/infiniband/hw
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Kaike Wan ce8e8087cf IB/hfi1: TID RDMA WRITE should not return IB_WC_RNR_RETRY_EXC_ERR 
Normal RDMA WRITE request never returns IB_WC_RNR_RETRY_EXC_ERR to ULPs
because it does not need post receive buffer on the responder side.
Consequently, as an enhancement to normal RDMA WRITE request inside the
hfi1 driver, TID RDMA WRITE request should not return such an error status
to ULPs, although it does receive RNR NAKs from the responder when TID
resources are not available. This behavior is violated when
qp->s_rnr_retry_cnt is set in current hfi1 implementation.

This patch enforces these semantics by avoiding any reaction to the updates
of the RNR QP attributes.

Fixes: 3c6cb20a0d ("IB/hfi1: Add TID RDMA WRITE functionality into RDMA verbs")
Link: https://lore.kernel.org/r/20191025195842.106825.71532.stgit@awfm-01.aw.intel.com
Cc: <stable@vger.kernel.org>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-11-06 13:15:36 -04:00
..
bnxt_re RDMA/bnxt_re: Fix spelling mistake "missin_resp" -> "missing_resp" 2019-09-16 10:58:57 -03:00
cxgb3 RDMA/{cxgb3, cxgb4, i40iw}: Remove common code 2019-08-12 10:19:43 -04:00
cxgb4 RDMA/iw_cxgb4: Avoid freeing skb twice in arp failure case 2019-10-28 14:13:33 -03:00
efa RDMA/efa: Fix incorrect error print 2019-09-16 14:25:43 -03:00
hfi1 IB/hfi1: TID RDMA WRITE should not return IB_WC_RNR_RETRY_EXC_ERR 2019-11-06 13:15:36 -04:00
hns RDMA/hns: Prevent memory leaks of eq->buf_list 2019-10-28 15:06:38 -03:00
i40iw RDMA/i40iw: Associate ibdev to netdev before IB device registration 2019-10-04 14:29:14 -03:00
mlx4 Merge tag 'v5.3-rc8' into rdma.git for-next 2019-09-13 16:59:51 -03:00
mlx5 RDMA/mlx5: Use irq xarray locking for mkey_table 2019-10-28 14:08:48 -03:00
mthca IB: Remove unneeded memset 2019-07-03 14:26:49 -03:00
ocrdma RDMA: Introduce ib_port_phys_state enum 2019-08-12 10:18:52 -04:00
qedr RDMA/qedr: Fix reported firmware version 2019-10-18 14:50:14 -04:00
qib mm/gup: add make_dirty arg to put_user_pages_dirty_lock() 2019-09-24 15:54:08 -07:00
usnic mm/gup: add make_dirty arg to put_user_pages_dirty_lock() 2019-09-24 15:54:08 -07:00
vmw_pvrdma RDMA/vmw_pvrdma: Free SRQ only once 2019-10-01 10:47:58 -03:00
Makefile rdma: Remove nes 2019-06-13 09:59:49 -04:00