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
41 static 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
78 static inline bool
79 mlx5_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
86 static inline bool
87 mlx5_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
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