IB/mlx4: Check if SRQ is full when posting receive



Make mlx4_post_srq_recv() fail if the SRQ is full (head == tail).

Signed-off-by: Roland Dreier <rolandd@cisco.com>

parent 2446304d

drivers/infiniband/hw/mlx4/srq.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -297,6 +297,12 @@ int mlx4_ib_post_srq_recv(struct ib_srq ibsrq, struct ib_recv_wr wr,
		break;
		}

		if (unlikely(srq->head == srq->tail)) {
		err = -ENOMEM;
		*bad_wr = wr;
		break;
		}

		srq->wrid[srq->head] = wr->wr_id;

		next = get_wqe(srq, srq->head);