diff options
Diffstat (limited to 'sys/dev/mlx5/mlx5_core/mlx5_crypto.c')
| -rw-r--r-- | sys/dev/mlx5/mlx5_core/mlx5_crypto.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/sys/dev/mlx5/mlx5_core/mlx5_crypto.c b/sys/dev/mlx5/mlx5_core/mlx5_crypto.c new file mode 100644 index 000000000000..03804219e0b3 --- /dev/null +++ b/sys/dev/mlx5/mlx5_core/mlx5_crypto.c @@ -0,0 +1,94 @@ +/*- + * Copyright (c) 2019-2021, Mellanox Technologies, Ltd. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include "opt_rss.h" +#include "opt_ratelimit.h" + +#include <linux/kernel.h> +#include <linux/module.h> + +#include <dev/mlx5/driver.h> +#include <dev/mlx5/crypto.h> + +int mlx5_encryption_key_create(struct mlx5_core_dev *mdev, u32 pdn, u32 key_type, + const void *p_key, u32 key_len, u32 *p_obj_id) +{ + u32 in[MLX5_ST_SZ_DW(create_encryption_key_in)] = {}; + u32 out[MLX5_ST_SZ_DW(create_encryption_key_out)] = {}; + u64 general_obj_types; + int err; + + general_obj_types = MLX5_CAP_GEN_64(mdev, general_obj_types); + if (!(general_obj_types & MLX5_HCA_CAP_GENERAL_OBJ_TYPES_ENCRYPTION_KEY)) + return -EINVAL; + + switch (key_len) { + case 128 / 8: + memcpy(MLX5_ADDR_OF(create_encryption_key_in, in, + encryption_key_object.key[4]), p_key, 128 / 8); + MLX5_SET(create_encryption_key_in, in, encryption_key_object.pd, pdn); + MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_size, + MLX5_GENERAL_OBJECT_TYPE_ENCRYPTION_KEY_KEY_SIZE_128); + MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_type, + key_type); + break; + case 256 / 8: + memcpy(MLX5_ADDR_OF(create_encryption_key_in, in, + encryption_key_object.key[0]), p_key, 256 / 8); + MLX5_SET(create_encryption_key_in, in, encryption_key_object.pd, pdn); + MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_size, + MLX5_GENERAL_OBJECT_TYPE_ENCRYPTION_KEY_KEY_SIZE_256); + MLX5_SET(create_encryption_key_in, in, encryption_key_object.key_type, + key_type); + break; + default: + return -EINVAL; + } + + MLX5_SET(create_encryption_key_in, in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJ); + MLX5_SET(create_encryption_key_in, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_ENCRYPTION_KEY); + + err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); + if (err == 0) + *p_obj_id = MLX5_GET(create_encryption_key_out, out, obj_id); + + /* avoid leaking key on the stack */ + explicit_bzero(in, sizeof(in)); + + return err; +} + +int mlx5_encryption_key_destroy(struct mlx5_core_dev *mdev, u32 oid) +{ + u32 in[MLX5_ST_SZ_DW(destroy_encryption_key_in)] = {}; + u32 out[MLX5_ST_SZ_DW(destroy_encryption_key_out)] = {}; + + MLX5_SET(destroy_encryption_key_in, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJ); + MLX5_SET(destroy_encryption_key_in, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_ENCRYPTION_KEY); + MLX5_SET(destroy_encryption_key_in, in, obj_id, oid); + + return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); +} |