RDMA/irdma: Don't arm the CQ more than two times if no CE for this CQ
authorTatyana Nikolova <tatyana.e.nikolova@intel.com>
Wed, 1 Dec 2021 23:15:09 +0000 (17:15 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 17 Dec 2021 09:30:14 +0000 (10:30 +0100)
commit76db15314582a74b774dee7c5d4f236c7a5ce2d1
treef58764a99e81c81735be4e44148beaa8acbcec52
parent918e625198346dba74f246f679971c7555ae25e4
RDMA/irdma: Don't arm the CQ more than two times if no CE for this CQ

[ Upstream commit 10467ce09fefa2e74359f5b2ab1efb8909402f19 ]

Completion events (CEs) are lost if the application is allowed to arm the
CQ more than two times when no new CE for this CQ has been generated by
the HW.

Check if arming has been done for the CQ and if not, arm the CQ for any
event otherwise promote to arm the CQ for any event only when the last arm
event was solicited.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20211201231509.1930-2-shiraz.saleem@intel.com
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/infiniband/hw/irdma/hw.c
drivers/infiniband/hw/irdma/main.h
drivers/infiniband/hw/irdma/utils.c
drivers/infiniband/hw/irdma/verbs.c
drivers/infiniband/hw/irdma/verbs.h