Linux kernel mirror (for testing)
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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
34#ifndef __MLX5_ACCEL_H__
35#define __MLX5_ACCEL_H__
36
37#include <linux/mlx5/driver.h>
38
39enum mlx5_accel_esp_aes_gcm_keymat_iv_algo {
40 MLX5_ACCEL_ESP_AES_GCM_IV_ALGO_SEQ,
41};
42
43enum mlx5_accel_esp_flags {
44 MLX5_ACCEL_ESP_FLAGS_TUNNEL = 0, /* Default */
45 MLX5_ACCEL_ESP_FLAGS_TRANSPORT = 1UL << 0,
46 MLX5_ACCEL_ESP_FLAGS_ESN_TRIGGERED = 1UL << 1,
47 MLX5_ACCEL_ESP_FLAGS_ESN_STATE_OVERLAP = 1UL << 2,
48};
49
50enum mlx5_accel_esp_action {
51 MLX5_ACCEL_ESP_ACTION_DECRYPT,
52 MLX5_ACCEL_ESP_ACTION_ENCRYPT,
53};
54
55enum mlx5_accel_esp_keymats {
56 MLX5_ACCEL_ESP_KEYMAT_AES_NONE,
57 MLX5_ACCEL_ESP_KEYMAT_AES_GCM,
58};
59
60enum mlx5_accel_esp_replay {
61 MLX5_ACCEL_ESP_REPLAY_NONE,
62 MLX5_ACCEL_ESP_REPLAY_BMP,
63};
64
65struct aes_gcm_keymat {
66 u64 seq_iv;
67 enum mlx5_accel_esp_aes_gcm_keymat_iv_algo iv_algo;
68
69 u32 salt;
70 u32 icv_len;
71
72 u32 key_len;
73 u32 aes_key[256 / 32];
74};
75
76struct mlx5_accel_esp_xfrm_attrs {
77 enum mlx5_accel_esp_action action;
78 u32 esn;
79 u32 spi;
80 u32 seq;
81 u32 tfc_pad;
82 u32 flags;
83 u32 sa_handle;
84 enum mlx5_accel_esp_replay replay_type;
85 union {
86 struct {
87 u32 size;
88
89 } bmp;
90 } replay;
91 enum mlx5_accel_esp_keymats keymat_type;
92 union {
93 struct aes_gcm_keymat aes_gcm;
94 } keymat;
95};
96
97struct mlx5_accel_esp_xfrm {
98 struct mlx5_core_dev *mdev;
99 struct mlx5_accel_esp_xfrm_attrs attrs;
100};
101
102enum {
103 MLX5_ACCEL_XFRM_FLAG_REQUIRE_METADATA = 1UL << 0,
104};
105
106enum mlx5_accel_ipsec_cap {
107 MLX5_ACCEL_IPSEC_CAP_DEVICE = 1 << 0,
108 MLX5_ACCEL_IPSEC_CAP_REQUIRED_METADATA = 1 << 1,
109 MLX5_ACCEL_IPSEC_CAP_ESP = 1 << 2,
110 MLX5_ACCEL_IPSEC_CAP_IPV6 = 1 << 3,
111 MLX5_ACCEL_IPSEC_CAP_LSO = 1 << 4,
112 MLX5_ACCEL_IPSEC_CAP_RX_NO_TRAILER = 1 << 5,
113 MLX5_ACCEL_IPSEC_CAP_ESN = 1 << 6,
114 MLX5_ACCEL_IPSEC_CAP_TX_IV_IS_ESN = 1 << 7,
115};
116
117#ifdef CONFIG_MLX5_ACCEL
118
119u32 mlx5_accel_ipsec_device_caps(struct mlx5_core_dev *mdev);
120
121struct mlx5_accel_esp_xfrm *
122mlx5_accel_esp_create_xfrm(struct mlx5_core_dev *mdev,
123 const struct mlx5_accel_esp_xfrm_attrs *attrs,
124 u32 flags);
125void mlx5_accel_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm);
126int mlx5_accel_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm,
127 const struct mlx5_accel_esp_xfrm_attrs *attrs);
128
129#else
130
131static inline u32 mlx5_accel_ipsec_device_caps(struct mlx5_core_dev *mdev) { return 0; }
132
133static inline struct mlx5_accel_esp_xfrm *
134mlx5_accel_esp_create_xfrm(struct mlx5_core_dev *mdev,
135 const struct mlx5_accel_esp_xfrm_attrs *attrs,
136 u32 flags) { return ERR_PTR(-EOPNOTSUPP); }
137static inline void
138mlx5_accel_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm) {}
139static inline int
140mlx5_accel_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm,
141 const struct mlx5_accel_esp_xfrm_attrs *attrs) { return -EOPNOTSUPP; }
142
143#endif
144#endif