RDMA/mlx5: Add a umr recovery flow
[ Upstream commit 158e71bb ] When a UMR fails, the UMR QP state changes to an error state. Therefore, all the further UMR operations will fail too. Add a recovery flow to the UMR QP, and repost the flushed WQEs. Link: https://lore.kernel.org/r/6cc24816cca049bd8541317f5e41d3ac659445d3.1652588303.git.leonro@nvidia.com Signed-off-by: Aharon Landau <aharonl@nvidia.com> Reviewed-by: Michael Guralnik <michaelgur@nvidia.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Stable-dep-of: 9b7d4be9 ("RDMA/mlx5: Fix UMR cleanup on error flow of driver init") Signed-off-by: Sasha Levin <sashal@kernel.org>
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