tree 1e207f30d164c27b3f209eb208cd6a82405c7a4f
parent dbc374d039a159b7e7cc0d68530552c46a0db498
author Yuval Basson <ybason@marvell.com> 1594238126 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1597817697 +0200

RDMA/qedr: SRQ's bug fixes

[ Upstream commit acca72e2b031b9fbb4184511072bd246a0abcebc ]

QP's with the same SRQ, working on different CQs and running in parallel
on different CPUs could lead to a race when maintaining the SRQ consumer
count, and leads to FW running out of SRQs. Update the consumer
atomically.  Make sure the wqe_prod is updated after the sge_prod due to
FW requirements.

Fixes: 3491c9e799fb ("qedr: Add support for kernel mode SRQ's")
Link: https://lore.kernel.org/r/20200708195526.31040-1-ybason@marvell.com
Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
Signed-off-by: Yuval Basson <ybason@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>