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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-07-21 13:03:30 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-08-02 12:02:41 -0400 |
| commit | 632bc3f65081dd1e2e5394a9161580a0f78e8839 (patch) | |
| tree | 45f033bacf41656957984f601d84636985212c7e /include/rdma | |
| parent | eaa74ec7329a48a4b724d8de440b3a2cbaabf7c8 (diff) | |
| download | lwn-632bc3f65081dd1e2e5394a9161580a0f78e8839.tar.gz lwn-632bc3f65081dd1e2e5394a9161580a0f78e8839.zip | |
IB/core, RDMA RW API: Do not exceed QP SGE send limit
Compute the SGE limit for RDMA READ and WRITE requests in
ib_create_qp(). Use that limit in the RDMA RW API implementation.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Steve Wise <swise@opengridcomputing.com>
Cc: Parav Pandit <pandit.parav@gmail.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Laurence Oberman <loberman@redhat.com>
Cc: <stable@vger.kernel.org> #v4.7+
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 7e440d41487a..e694f02d42e3 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1428,6 +1428,10 @@ struct ib_srq { } ext; }; +/* + * @max_write_sge: Maximum SGE elements per RDMA WRITE request. + * @max_read_sge: Maximum SGE elements per RDMA READ request. + */ struct ib_qp { struct ib_device *device; struct ib_pd *pd; @@ -1449,6 +1453,8 @@ struct ib_qp { void (*event_handler)(struct ib_event *, void *); void *qp_context; u32 qp_num; + u32 max_write_sge; + u32 max_read_sge; enum ib_qp_type qp_type; }; |