Commit ab69d4c8 authored by Somnath Kotur's avatar Somnath Kotur Committed by Doug Ledford

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: default avatarSomnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: default avatarSelvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent b3b2c7c5
...@@ -1128,6 +1128,11 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp, ...@@ -1128,6 +1128,11 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
} }
/* Each SGE entry = 1 WQE size16 */ /* Each SGE entry = 1 WQE size16 */
wqe_size16 = wqe->num_sge; 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 */ /* Specifics */
...@@ -1364,6 +1369,11 @@ int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp, ...@@ -1364,6 +1369,11 @@ int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
rqe->flags = wqe->flags; rqe->flags = wqe->flags;
rqe->wqe_size = wqe->num_sge + rqe->wqe_size = wqe->num_sge +
((offsetof(typeof(*rqe), data) + 15) >> 4); ((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 */ /* Supply the rqe->wr_id index to the wr_id_tbl for now */
rqe->wr_id[0] = cpu_to_le32(sw_prod); rqe->wr_id[0] = cpu_to_le32(sw_prod);
......
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