1/*-
2 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_txrx.c 306245 2016-09-23 08:29:27Z hselasky $
26 */
27
28#include "en.h"
29
30struct mlx5_cqe64 *
31mlx5e_get_cqe(struct mlx5e_cq *cq)
32{
33	struct mlx5_cqe64 *cqe;
34
35	cqe = mlx5_cqwq_get_wqe(&cq->wq, mlx5_cqwq_get_ci(&cq->wq));
36
37	if ((cqe->op_own ^ mlx5_cqwq_get_wrap_cnt(&cq->wq)) & MLX5_CQE_OWNER_MASK)
38		return (NULL);
39
40	/* ensure cqe content is read after cqe ownership bit */
41	rmb();
42
43	return (cqe);
44}
45
46void
47mlx5e_cq_error_event(struct mlx5_core_cq *mcq, int event)
48{
49	struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
50
51	if_printf(cq->priv->ifp, "%s: cqn=0x%.6x event=0x%.2x\n",
52	    __func__, mcq->cqn, event);
53}
54