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
mlx5_fs_is_ipsec_flow(const u32 * match_c)41 static inline bool mlx5_fs_is_ipsec_flow(const u32 *match_c)
42 {
43 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
44 misc_parameters);
45
46 return MLX5_GET(fte_match_set_misc, misc_params_c, outer_esp_spi);
47 }
48
_mlx5_fs_is_outer_ipproto_flow(const u32 * match_c,const u32 * match_v,u8 match)49 static inline bool _mlx5_fs_is_outer_ipproto_flow(const u32 *match_c,
50 const u32 *match_v, u8 match)
51 {
52 const void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
53 outer_headers);
54 const void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
55 outer_headers);
56
57 return MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_protocol) == 0xff &&
58 MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol) == match;
59 }
60
mlx5_fs_is_outer_tcp_flow(const u32 * match_c,const u32 * match_v)61 static inline bool mlx5_fs_is_outer_tcp_flow(const u32 *match_c,
62 const u32 *match_v)
63 {
64 return _mlx5_fs_is_outer_ipproto_flow(match_c, match_v, IPPROTO_TCP);
65 }
66
mlx5_fs_is_outer_udp_flow(const u32 * match_c,const u32 * match_v)67 static inline bool mlx5_fs_is_outer_udp_flow(const u32 *match_c,
68 const u32 *match_v)
69 {
70 return _mlx5_fs_is_outer_ipproto_flow(match_c, match_v, IPPROTO_UDP);
71 }
72
mlx5_fs_is_vxlan_flow(const u32 * match_c)73 static inline bool mlx5_fs_is_vxlan_flow(const u32 *match_c)
74 {
75 void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
76 misc_parameters);
77
78 return MLX5_GET(fte_match_set_misc, misc_params_c, vxlan_vni);
79 }
80
_mlx5_fs_is_outer_ipv_flow(struct mlx5_core_dev * mdev,const u32 * match_c,const u32 * match_v,int version)81 static inline bool _mlx5_fs_is_outer_ipv_flow(struct mlx5_core_dev *mdev,
82 const u32 *match_c,
83 const u32 *match_v, int version)
84 {
85 int match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
86 ft_field_support.outer_ip_version);
87 const void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
88 outer_headers);
89 const void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
90 outer_headers);
91
92 if (!match_ipv) {
93 u16 ethertype;
94
95 switch (version) {
96 case MLX5_FS_IPV4_VERSION:
97 ethertype = ETH_P_IP;
98 break;
99 case MLX5_FS_IPV6_VERSION:
100 ethertype = ETH_P_IPV6;
101 break;
102 default:
103 return false;
104 }
105
106 return MLX5_GET(fte_match_set_lyr_2_4, headers_c,
107 ethertype) == 0xffff &&
108 MLX5_GET(fte_match_set_lyr_2_4, headers_v,
109 ethertype) == ethertype;
110 }
111
112 return MLX5_GET(fte_match_set_lyr_2_4, headers_c,
113 ip_version) == 0xf &&
114 MLX5_GET(fte_match_set_lyr_2_4, headers_v,
115 ip_version) == version;
116 }
117
118 static inline bool
mlx5_fs_is_outer_ipv4_flow(struct mlx5_core_dev * mdev,const u32 * match_c,const u32 * match_v)119 mlx5_fs_is_outer_ipv4_flow(struct mlx5_core_dev *mdev, const u32 *match_c,
120 const u32 *match_v)
121 {
122 return _mlx5_fs_is_outer_ipv_flow(mdev, match_c, match_v,
123 MLX5_FS_IPV4_VERSION);
124 }
125
126 static inline bool
mlx5_fs_is_outer_ipv6_flow(struct mlx5_core_dev * mdev,const u32 * match_c,const u32 * match_v)127 mlx5_fs_is_outer_ipv6_flow(struct mlx5_core_dev *mdev, const u32 *match_c,
128 const u32 *match_v)
129 {
130 return _mlx5_fs_is_outer_ipv_flow(mdev, match_c, match_v,
131 MLX5_FS_IPV6_VERSION);
132 }
133
mlx5_fs_is_outer_ipsec_flow(const u32 * match_c)134 static inline bool mlx5_fs_is_outer_ipsec_flow(const u32 *match_c)
135 {
136 void *misc_params_c =
137 MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters);
138
139 return MLX5_GET(fte_match_set_misc, misc_params_c, outer_esp_spi);
140 }
141
142 #endif
143
