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 * = MLX5_ADDR_OF(fte_match_param, match_c, |
48 | outer_headers); |
49 | const void * = 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 | |