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[for-next,v3,0/2] RDMA/rxe: RDMA FLUSH and ATOMIC WRITE with ODP

Message ID 20250324075649.3313968-1-matsuda-daisuke@fujitsu.com (mailing list archive)
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Series RDMA/rxe: RDMA FLUSH and ATOMIC WRITE with ODP | expand

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Daisuke Matsuda (Fujitsu) March 24, 2025, 7:56 a.m. UTC 
RDMA FLUSH[1] and ATOMIC WRITE[2] were added to rxe, but they cannot run
in the ODP mode as of now. This series is for the kernel-side enablement.

There are also minor changes in libibverbs and pyverbs. The rdma-core tests
are also added so that people can test the features.
PR: https://github.com/linux-rdma/rdma-core/pull/1580

You can try the patches with the tree below:
https://github.com/ddmatsu/linux/tree/odp-extension3

Note that the tree is a bit old (6.13-rc1), because there was an issue[3]
in the for-next tree that disabled ibv_query_device_ex(), which is used to
query ODP capabilities. However, there is already a fix[4], and it is to be
resolved in the next release. I will update the tree once it is ready.

[1] [for-next PATCH 00/10] RDMA/rxe: Add RDMA FLUSH operation
https://lore.kernel.org/lkml/20221206130201.30986-1-lizhijian@fujitsu.com/

[2] [PATCH v7 0/8] RDMA/rxe: Add atomic write operation
https://lore.kernel.org/linux-rdma/1669905432-14-1-git-send-email-yangx.jy@fujitsu.com/

[3] [bug report] RDMA/rxe: Failure of ibv_query_device() and ibv_query_device_ex() tests in rdma-core
https://lore.kernel.org/all/1b9d6286-62fc-4b42-b304-0054c4ebee02@linux.dev/T/

[4] [PATCH rdma-rc 1/1] RDMA/rxe: Fix the failure of ibv_query_device() and ibv_query_device_ex() tests
https://lore.kernel.org/linux-rdma/174102882930.42565.11864314726635251412.b4-ty@kernel.org/T/#t

History:
  v1->v2: Removed some code duplications
  v2->v3: Addressed comments from Leon Romanovsky
          cf. https://lore.kernel.org/linux-rdma/20250319085825.GH1322339@unreal/

Daisuke Matsuda (2):
  RDMA/rxe: Enable ODP in RDMA FLUSH operation
  RDMA/rxe: Enable ODP in ATOMIC WRITE operation

 drivers/infiniband/sw/rxe/rxe.c      |   2 +
 drivers/infiniband/sw/rxe/rxe_loc.h  |  18 ++++-
 drivers/infiniband/sw/rxe/rxe_mr.c   |  48 ++++++------
 drivers/infiniband/sw/rxe/rxe_odp.c  | 108 ++++++++++++++++++++++++++-
 drivers/infiniband/sw/rxe/rxe_resp.c |  15 ++--
 include/rdma/ib_verbs.h              |   2 +
 6 files changed, 159 insertions(+), 34 deletions(-)