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| author |   Selvin Xavier <selvin.xavier@broadcom.com> | 2020-11-30 05:13:06 -0800 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2020-12-07 15:43:42 -0400 |
| commit | c63e1c4dfc33d1bdae395ee8fbcbfad4830b12c0 (patch) | |
| tree | b1880e7afc23d09b0bd1b78b47f54b0bf62d1394 | |
| parent | RDMA/i40iw: Replace atomic_add_return(1, ..) (diff) | |
| download | linux-dev-c63e1c4dfc33d1bdae395ee8fbcbfad4830b12c0.tar.xz linux-dev-c63e1c4dfc33d1bdae395ee8fbcbfad4830b12c0.zip | |
RDMA/bnxt_re: Fix max_qp_wrs reported
While creating qps, the driver adds one extra entry to the sq size passed
by the ULPs in order to avoid queue full condition. When ULPs creates QPs
with max_qp_wr reported, driver creates QP with 1 more than the max_wqes
supported by HW. Create QP fails in this case. To avoid this error, reduce
1 entry in max_qp_wqes and report it to the stack.
Link: https://lore.kernel.org/r/1606741986-16477-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/qplib_sp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c index 64d44f51db4b..6316179583a6 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c @@ -118,7 +118,7 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw, * 128 WQEs needs to be reserved for the HW (8916). Prevent * reporting the max number */ - attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS; + attr->max_qp_wqes -= BNXT_QPLIB_RESERVED_QP_WRS + 1; attr->max_qp_sges = bnxt_qplib_is_chip_gen_p5(rcfw->res->cctx) ? 6 : sb->max_sge; attr->max_cq = le32_to_cpu(sb->max_cq); |