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3346c487 BP |
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 | ||
3346c487 BP |
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 | ||
3346c487 | 94 | #endif |