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| author | Somnath Kotur <somnath.kotur@broadcom.com> | 2017-06-29 12:28:09 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-07-20 11:20:49 -0400 |
| commit | ab69d4c8da38024191f3514c1296e9e8deea4e98 (patch) | |
| tree | 618d110aa7b9ca30ea560259a49d127d817bfdac /drivers/infiniband | |
| parent | b3b2c7c5506bd8d15214136f8b11a2e6c9728033 (diff) | |
| download | linux-stable-ab69d4c8da38024191f3514c1296e9e8deea4e98.tar.gz linux-stable-ab69d4c8da38024191f3514c1296e9e8deea4e98.tar.bz2 linux-stable-ab69d4c8da38024191f3514c1296e9e8deea4e98.zip | |
RDMA/bnxt_re: Fix WQE Size posted to HW to prevent it from throwing error
Posting WQE size of 2 results in a WQE_FORMAT_ERROR
thrown by the HW as it requires host to supply WQE Size with room
for atleast one SGE so that the resulting WQE size be atleast 3.
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/qplib_fp.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c index f05500bcdcf1..8ef39df2f44f 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c @@ -1128,6 +1128,11 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp, } /* Each SGE entry = 1 WQE size16 */ wqe_size16 = wqe->num_sge; + /* HW requires wqe size has room for atleast one SGE even if + * none was supplied by ULP + */ + if (!wqe->num_sge) + wqe_size16++; } /* Specifics */ @@ -1364,6 +1369,11 @@ int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp, rqe->flags = wqe->flags; rqe->wqe_size = wqe->num_sge + ((offsetof(typeof(*rqe), data) + 15) >> 4); + /* HW requires wqe size has room for atleast one SGE even if none + * was supplied by ULP + */ + if (!wqe->num_sge) + rqe->wqe_size++; /* Supply the rqe->wr_id index to the wr_id_tbl for now */ rqe->wr_id[0] = cpu_to_le32(sw_prod); |