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| author |   Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com> | 2021-07-29 14:26:22 -0400 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2021-08-02 12:45:22 -0300 |
| commit | db4657afd10e45855ac1d8437fcc9a86bd3d741d (patch) | |
| tree | 116e50fdcc3af066f6954a3ca15dc960d754271a /drivers/infiniband/sw/rxe | |
| parent | RDMA/mlx5: Delay emptying a cache entry when a new MR is added to it recently (diff) | |
| download | linux-dev-db4657afd10e45855ac1d8437fcc9a86bd3d741d.tar.xz linux-dev-db4657afd10e45855ac1d8437fcc9a86bd3d741d.zip | |
RDMA/cma: Revert INIT-INIT patch
The net/sunrpc/xprtrdma module creates its QP using rdma_create_qp() and
immediately post receives, implicitly assuming the QP is in the INIT state
and thus valid for ib_post_recv().
The patch noted in Fixes: removed the RESET->INIT modifiy from
rdma_create_qp(), breaking NFS rdma for verbs providers that fail the
ib_post_recv() for a bad state.
This situation was proven using kprobes in rvt_post_recv() and
rvt_modify_qp(). The traces showed that the rvt_post_recv() failed before
ANY modify QP and that the current state was RESET.
Fix by reverting the patch below.
Fixes: dc70f7c3ed34 ("RDMA/cma: Remove unnecessary INIT->INIT transition")
Link: https://lore.kernel.org/r/1627583182-81330-1-git-send-email-mike.marciniszyn@cornelisnetworks.com
Cc: Haakon Bugge <haakon.bugge@oracle.com>
Cc: Chuck Lever III <chuck.lever@oracle.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/sw/rxe')
0 files changed, 0 insertions, 0 deletions