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| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2017-05-12 09:20:31 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-06-27 16:56:33 -0400 |
| commit | 14fe13fcd3afb96b06809f280b586be1c998332c (patch) | |
| tree | cf713910a88e99f3264dd3a28c041659b7b5c983 /include/rdma/rdma_vt.h | |
| parent | 9039746cdf39dcbf2ddfcc4a68f729cbbbc853df (diff) | |
| download | linux-14fe13fcd3afb96b06809f280b586be1c998332c.tar.bz2 | |
IB/rdmavt: Compress adjacent SGEs in rvt_lkey_ok()
SGEs that are contiguous needlessly consume driver dependent TX resources.
The lkey validation logic is enhanced to compress the SGE that ends
up in the send wqe when consecutive addresses are detected.
The lkey validation API used to return 1 (success) or 0 (fail).
The return value is now an -errno, 0 (compressed), or 1 (uncompressed). A
additional argument is added to pass the last SQE for the compression.
Loopback callers always pass a NULL to last_sge since the optimization is
of little benefit in that situation.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Brian Welty <brian.welty@intel.com>
Signed-off-by: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma/rdma_vt.h')
| -rw-r--r-- | include/rdma/rdma_vt.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h index 4878aaf7bdff..d0b9f91e5f4d 100644 --- a/include/rdma/rdma_vt.h +++ b/include/rdma/rdma_vt.h @@ -515,7 +515,8 @@ int rvt_invalidate_rkey(struct rvt_qp *qp, u32 rkey); int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge, u32 len, u64 vaddr, u32 rkey, int acc); int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd, - struct rvt_sge *isge, struct ib_sge *sge, int acc); + struct rvt_sge *isge, struct rvt_sge *last_sge, + struct ib_sge *sge, int acc); struct rvt_mcast *rvt_mcast_find(struct rvt_ibport *ibp, union ib_gid *mgid, u16 lid); |