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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 /drivers/infiniband/hw/qib/qib_ruc.c | |
| parent | IB/hfi1: Setup common IB fields in hfi1_packet struct (diff) | |
| download | linux-dev-14fe13fcd3afb96b06809f280b586be1c998332c.tar.xz linux-dev-14fe13fcd3afb96b06809f280b586be1c998332c.zip | |
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 'drivers/infiniband/hw/qib/qib_ruc.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_ruc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qib/qib_ruc.c b/drivers/infiniband/hw/qib/qib_ruc.c index bd09de7c6e56..88d84cbf7e5a 100644 --- a/drivers/infiniband/hw/qib/qib_ruc.c +++ b/drivers/infiniband/hw/qib/qib_ruc.c @@ -59,7 +59,7 @@ static int qib_init_sge(struct rvt_qp *qp, struct rvt_rwqe *wqe) continue; /* Check LKEY */ if (!rvt_lkey_ok(rkt, pd, j ? &ss->sg_list[j - 1] : &ss->sge, - &wqe->sg_list[i], IB_ACCESS_LOCAL_WRITE)) + NULL, &wqe->sg_list[i], IB_ACCESS_LOCAL_WRITE)) goto bad_lkey; qp->r_len += wqe->sg_list[i].length; j++; |