1/*
2 * Copyright (c) 2018, 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#ifndef _MLX5_FS_HELPERS_
34#define _MLX5_FS_HELPERS_
35
36#include <linux/mlx5/mlx5_ifc.h>
37
38#define MLX5_FS_IPV4_VERSION 4
39#define MLX5_FS_IPV6_VERSION 6
40
41static inline bool _mlx5_fs_is_outer_ipv_flow(struct mlx5_core_dev *mdev,
42					      const u32 *match_c,
43					      const u32 *match_v, int version)
44{
45	int match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
46						  ft_field_support.outer_ip_version);
47	const void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
48					     outer_headers);
49	const void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
50					     outer_headers);
51
52	if (!match_ipv) {
53		u16 ethertype;
54
55		switch (version) {
56		case MLX5_FS_IPV4_VERSION:
57			ethertype = ETH_P_IP;
58			break;
59		case MLX5_FS_IPV6_VERSION:
60			ethertype = ETH_P_IPV6;
61			break;
62		default:
63			return false;
64		}
65
66		return MLX5_GET(fte_match_set_lyr_2_4, headers_c,
67				ethertype) == 0xffff &&
68			MLX5_GET(fte_match_set_lyr_2_4, headers_v,
69				 ethertype) == ethertype;
70	}
71
72	return MLX5_GET(fte_match_set_lyr_2_4, headers_c,
73			ip_version) == 0xf &&
74		MLX5_GET(fte_match_set_lyr_2_4, headers_v,
75			 ip_version) == version;
76}
77
78static inline bool
79mlx5_fs_is_outer_ipv4_flow(struct mlx5_core_dev *mdev, const u32 *match_c,
80			   const u32 *match_v)
81{
82	return _mlx5_fs_is_outer_ipv_flow(mdev, match_c, match_v,
83					  MLX5_FS_IPV4_VERSION);
84}
85
86static inline bool
87mlx5_fs_is_outer_ipv6_flow(struct mlx5_core_dev *mdev, const u32 *match_c,
88			   const u32 *match_v)
89{
90	return _mlx5_fs_is_outer_ipv_flow(mdev, match_c, match_v,
91					  MLX5_FS_IPV6_VERSION);
92}
93
94#endif
95