1 /*
2 * Copyright (c) 2017 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_IPSEC_H__
35 #define __MLX5_ACCEL_IPSEC_H__
36
37 #include <linux/mlx5/driver.h>
38 #include <linux/mlx5/accel.h>
39
40 #ifdef CONFIG_MLX5_ACCEL
41
42 #define MLX5_IPSEC_DEV(mdev) (mlx5_accel_ipsec_device_caps(mdev) & \
43 MLX5_ACCEL_IPSEC_CAP_DEVICE)
44
45 unsigned int mlx5_accel_ipsec_counters_count(struct mlx5_core_dev *mdev);
46 int mlx5_accel_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
47 unsigned int count);
48
49 void *mlx5_accel_esp_create_hw_context(struct mlx5_core_dev *mdev,
50 struct mlx5_accel_esp_xfrm *xfrm,
51 u32 *sa_handle);
52 void mlx5_accel_esp_free_hw_context(struct mlx5_core_dev *mdev, void *context);
53
54 void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev);
55 void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev);
56
57 struct mlx5_accel_ipsec_ops {
58 u32 (*device_caps)(struct mlx5_core_dev *mdev);
59 unsigned int (*counters_count)(struct mlx5_core_dev *mdev);
60 int (*counters_read)(struct mlx5_core_dev *mdev, u64 *counters, unsigned int count);
61 void* (*create_hw_context)(struct mlx5_core_dev *mdev,
62 struct mlx5_accel_esp_xfrm *xfrm,
63 const __be32 saddr[4], const __be32 daddr[4],
64 const __be32 spi, bool is_ipv6, u32 *sa_handle);
65 void (*free_hw_context)(void *context);
66 int (*init)(struct mlx5_core_dev *mdev);
67 void (*cleanup)(struct mlx5_core_dev *mdev);
68 struct mlx5_accel_esp_xfrm* (*esp_create_xfrm)(struct mlx5_core_dev *mdev,
69 const struct mlx5_accel_esp_xfrm_attrs *attrs,
70 u32 flags);
71 int (*esp_modify_xfrm)(struct mlx5_accel_esp_xfrm *xfrm,
72 const struct mlx5_accel_esp_xfrm_attrs *attrs);
73 void (*esp_destroy_xfrm)(struct mlx5_accel_esp_xfrm *xfrm);
74 };
75
76 #else
77
78 #define MLX5_IPSEC_DEV(mdev) false
79
80 static inline void *
mlx5_accel_esp_create_hw_context(struct mlx5_core_dev * mdev,struct mlx5_accel_esp_xfrm * xfrm,u32 * sa_handle)81 mlx5_accel_esp_create_hw_context(struct mlx5_core_dev *mdev,
82 struct mlx5_accel_esp_xfrm *xfrm,
83 u32 *sa_handle)
84 {
85 return NULL;
86 }
87
mlx5_accel_esp_free_hw_context(struct mlx5_core_dev * mdev,void * context)88 static inline void mlx5_accel_esp_free_hw_context(struct mlx5_core_dev *mdev, void *context) {}
89
mlx5_accel_ipsec_init(struct mlx5_core_dev * mdev)90 static inline void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev) {}
91
mlx5_accel_ipsec_cleanup(struct mlx5_core_dev * mdev)92 static inline void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev) {}
93
94 #endif /* CONFIG_MLX5_ACCEL */
95
96 #endif /* __MLX5_ACCEL_IPSEC_H__ */
97