1/*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses.  You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 *     Redistribution and use in source and binary forms, with or
11 *     without modification, are permitted provided that the following
12 *     conditions are met:
13 *
14 *      - Redistributions of source code must retain the above
15 *        copyright notice, this list of conditions and the following
16 *        disclaimer.
17 *
18 *      - Redistributions in binary form must reproduce the above
19 *        copyright notice, this list of conditions and the following
20 *        disclaimer in the documentation and/or other materials
21 *        provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include <linux/kernel.h>
34#include <linux/module.h>
35#include <linux/mlx5/driver.h>
36#include <linux/mlx5/cmd.h>
37#include <rdma/ib_verbs.h>
38#include "mlx5_core.h"
39
40struct mlx5_attach_mcg_mbox_in {
41	struct mlx5_inbox_hdr	hdr;
42	__be32			qpn;
43	__be32			rsvd;
44	u8			gid[16];
45};
46
47struct mlx5_attach_mcg_mbox_out {
48	struct mlx5_outbox_hdr	hdr;
49	u8			rsvf[8];
50};
51
52struct mlx5_detach_mcg_mbox_in {
53	struct mlx5_inbox_hdr	hdr;
54	__be32			qpn;
55	__be32			rsvd;
56	u8			gid[16];
57};
58
59struct mlx5_detach_mcg_mbox_out {
60	struct mlx5_outbox_hdr	hdr;
61	u8			rsvf[8];
62};
63
64int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
65{
66	struct mlx5_attach_mcg_mbox_in in;
67	struct mlx5_attach_mcg_mbox_out out;
68	int err;
69
70	memset(&in, 0, sizeof(in));
71	memset(&out, 0, sizeof(out));
72	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ATTACH_TO_MCG);
73	memcpy(in.gid, mgid, sizeof(*mgid));
74	in.qpn = cpu_to_be32(qpn);
75	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
76	if (err)
77		return err;
78
79	if (out.hdr.status)
80		err = mlx5_cmd_status_to_err(&out.hdr);
81
82	return err;
83}
84EXPORT_SYMBOL(mlx5_core_attach_mcg);
85
86int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
87{
88	struct mlx5_detach_mcg_mbox_in in;
89	struct mlx5_detach_mcg_mbox_out out;
90	int err;
91
92	memset(&in, 0, sizeof(in));
93	memset(&out, 0, sizeof(out));
94	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DETACH_FROM_MCG);
95	memcpy(in.gid, mgid, sizeof(*mgid));
96	in.qpn = cpu_to_be32(qpn);
97	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
98	if (err)
99		return err;
100
101	if (out.hdr.status)
102		err = mlx5_cmd_status_to_err(&out.hdr);
103
104	return err;
105}
106EXPORT_SYMBOL(mlx5_core_detach_mcg);
107