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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>
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@ -1128,6 +1128,11 @@ int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
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}
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}
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/* Each SGE entry = 1 WQE size16 */
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/* Each SGE entry = 1 WQE size16 */
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wqe_size16 = wqe->num_sge;
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wqe_size16 = wqe->num_sge;
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/* HW requires wqe size has room for atleast one SGE even if
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* none was supplied by ULP
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*/
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if (!wqe->num_sge)
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wqe_size16++;
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}
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}
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/* Specifics */
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/* Specifics */
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@ -1364,6 +1369,11 @@ int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
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rqe->flags = wqe->flags;
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rqe->flags = wqe->flags;
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rqe->wqe_size = wqe->num_sge +
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rqe->wqe_size = wqe->num_sge +
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((offsetof(typeof(*rqe), data) + 15) >> 4);
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((offsetof(typeof(*rqe), data) + 15) >> 4);
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/* HW requires wqe size has room for atleast one SGE even if none
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* was supplied by ULP
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*/
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if (!wqe->num_sge)
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rqe->wqe_size++;
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/* Supply the rqe->wr_id index to the wr_id_tbl for now */
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/* Supply the rqe->wr_id index to the wr_id_tbl for now */
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rqe->wr_id[0] = cpu_to_le32(sw_prod);
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rqe->wr_id[0] = cpu_to_le32(sw_prod);
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