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Commit 7f5eb9bb authored by Roland Dreier's avatar Roland Dreier
Browse files

IB/mlx4: Return receive queue sizes for userspace QPs from query QP 



Return the receive queue sizes for both userspace QPs and kernel Qps
(not just kernel QPs) from mlx4_ib_query_qp().  Also zero the send
queue sizes for userspace QPs to avoid a possible information leak,
and set the max_inline_data for kernel QPs to 0 since inline sends are
not supported for kernel QPs.

Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent c9f2ba5e

drivers/infiniband/hw/mlx4/qp.c

+16 −8
Original line number Diff line number Diff line
@@ -1581,17 +1581,25 @@ int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr 


done:

	qp_attr->cur_qp_state	     = qp_attr->qp_state;

	qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;

	qp_attr->cap.max_recv_sge    = qp->rq.max_gs;



	if (!ibqp->uobject) {

		qp_attr->cap.max_send_wr  = qp->sq.wqe_cnt;

		qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;

		qp_attr->cap.max_send_sge = qp->sq.max_gs;

		qp_attr->cap.max_recv_sge    = qp->rq.max_gs;

		qp_attr->cap.max_inline_data = (1 << qp->sq.wqe_shift) -

			send_wqe_overhead(qp->ibqp.qp_type) -

			sizeof (struct mlx4_wqe_inline_seg);

		qp_init_attr->cap	     = qp_attr->cap;

	} else {

		qp_attr->cap.max_send_wr  = 0;

		qp_attr->cap.max_send_sge = 0;

	}



	/*

	 * We don't support inline sends for kernel QPs (yet), and we

	 * don't know what userspace's value should be.

	 */

	qp_attr->cap.max_inline_data = 0;



	qp_init_attr->cap	     = qp_attr->cap;



	return 0;

}