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

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

drivers/infiniband/hw/bnxt_re/qplib_fp.c

+10 −0
Original line number Diff line number Diff line
@@ -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);