2 * Copyright (c) 2019, Mellanox Technologies, Ltd. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <dev/mlx5/driver.h>
31 #include <dev/mlx5/tls.h>
33 #include "mlx5_core.h"
36 int mlx5_encryption_key_create(struct mlx5_core_dev *mdev, u32 pdn,
37 const void *p_key, u32 key_len, u32 *p_obj_id)
39 u32 in[MLX5_ST_SZ_DW(create_encryption_key_in)] = {};
40 u32 out[MLX5_ST_SZ_DW(create_encryption_key_out)] = {};
41 u64 general_obj_types;
44 general_obj_types = MLX5_CAP_GEN_64(mdev, general_obj_types);
45 if (!(general_obj_types & MLX5_HCA_CAP_GENERAL_OBJ_TYPES_ENCRYPTION_KEY))
50 memcpy(MLX5_ADDR_OF(create_encryption_key_in, in,
51 encryption_key_object.key[4]), p_key, 128 / 8);
52 MLX5_SET(create_encryption_key_in, in, encryption_key_object.pd, pdn);
53 MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_size,
54 MLX5_GENERAL_OBJECT_TYPE_ENCRYPTION_KEY_KEY_SIZE_128);
55 MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_type,
56 MLX5_GENERAL_OBJECT_TYPE_ENCRYPTION_KEY_TYPE_DEK);
59 memcpy(MLX5_ADDR_OF(create_encryption_key_in, in,
60 encryption_key_object.key[0]), p_key, 256 / 8);
61 MLX5_SET(create_encryption_key_in, in, encryption_key_object.pd, pdn);
62 MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_size,
63 MLX5_GENERAL_OBJECT_TYPE_ENCRYPTION_KEY_KEY_SIZE_256);
64 MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_type,
65 MLX5_GENERAL_OBJECT_TYPE_ENCRYPTION_KEY_TYPE_DEK);
71 MLX5_SET(create_encryption_key_in, in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJ);
72 MLX5_SET(create_encryption_key_in, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_ENCRYPTION_KEY);
74 err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
76 *p_obj_id = MLX5_GET(create_encryption_key_out, out, obj_id);
78 /* avoid leaking key on the stack */
79 memset(in, 0, sizeof(in));
84 int mlx5_encryption_key_destroy(struct mlx5_core_dev *mdev, u32 oid)
86 u32 in[MLX5_ST_SZ_DW(destroy_encryption_key_in)] = {};
87 u32 out[MLX5_ST_SZ_DW(destroy_encryption_key_out)] = {};
89 MLX5_SET(destroy_encryption_key_in, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJ);
90 MLX5_SET(destroy_encryption_key_in, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_ENCRYPTION_KEY);
91 MLX5_SET(destroy_encryption_key_in, in, obj_id, oid);
93 return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
96 int mlx5_tls_open_tis(struct mlx5_core_dev *mdev, int tc, int tdn, int pdn, u32 *p_tisn)
98 u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {};
99 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
102 MLX5_SET(tisc, tisc, prio, tc);
103 MLX5_SET(tisc, tisc, transport_domain, tdn);
104 MLX5_SET(tisc, tisc, tls_en, 1);
105 MLX5_SET(tisc, tisc, pd, pdn);
107 err = mlx5_core_create_tis(mdev, in, sizeof(in), p_tisn);
110 else if (*p_tisn == 0)
113 return (0); /* success */
116 void mlx5_tls_close_tis(struct mlx5_core_dev *mdev, u32 tisn)
119 mlx5_core_destroy_tis(mdev, tisn);