root/drivers/net/ethernet/mellanox/mlx5/core/accel/tls.h

INCLUDED FROM

DEFINITIONS

1. mlx5_accel_is_ktls_device
2. mlx5e_ktls_type_check
3. mlx5_ktls_create_key
4. mlx5_ktls_destroy_key
5. mlx5_accel_is_ktls_device
6. mlx5e_ktls_type_check
7. mlx5_accel_tls_add_flow
8. mlx5_accel_tls_del_flow
9. mlx5_accel_tls_resync_rx
10. mlx5_accel_is_tls_device
11. mlx5_accel_tls_device_caps
12. mlx5_accel_tls_init
13. mlx5_accel_tls_cleanup

   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_TLS_H__
  35 #define __MLX5_ACCEL_TLS_H__
  36 
  37 #include <linux/mlx5/driver.h>
  38 #include <linux/tls.h>
  39 
  40 #ifdef CONFIG_MLX5_TLS
  41 int mlx5_ktls_create_key(struct mlx5_core_dev *mdev,
  42                          struct tls_crypto_info *crypto_info,
  43                          u32 *p_key_id);
  44 void mlx5_ktls_destroy_key(struct mlx5_core_dev *mdev, u32 key_id);
  45 
  46 static inline bool mlx5_accel_is_ktls_device(struct mlx5_core_dev *mdev)
  47 {
  48         if (!MLX5_CAP_GEN(mdev, tls_tx))
  49                 return false;
  50 
  51         if (!MLX5_CAP_GEN(mdev, log_max_dek))
  52                 return false;
  53 
  54         return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128);
  55 }
  56 
  57 static inline bool mlx5e_ktls_type_check(struct mlx5_core_dev *mdev,
  58                                          struct tls_crypto_info *crypto_info)
  59 {
  60         switch (crypto_info->cipher_type) {
  61         case TLS_CIPHER_AES_GCM_128:
  62                 if (crypto_info->version == TLS_1_2_VERSION)
  63                         return MLX5_CAP_TLS(mdev,  tls_1_2_aes_gcm_128);
  64                 break;
  65         }
  66 
  67         return false;
  68 }
  69 #else
  70 static inline int
  71 mlx5_ktls_create_key(struct mlx5_core_dev *mdev,
  72                      struct tls_crypto_info *crypto_info,
  73                      u32 *p_key_id) { return -ENOTSUPP; }
  74 static inline void
  75 mlx5_ktls_destroy_key(struct mlx5_core_dev *mdev, u32 key_id) {}
  76 
  77 static inline bool
  78 mlx5_accel_is_ktls_device(struct mlx5_core_dev *mdev) { return false; }
  79 static inline bool
  80 mlx5e_ktls_type_check(struct mlx5_core_dev *mdev,
  81                       struct tls_crypto_info *crypto_info) { return false; }
  82 #endif
  83 
  84 enum {
  85         MLX5_ACCEL_TLS_TX = BIT(0),
  86         MLX5_ACCEL_TLS_RX = BIT(1),
  87         MLX5_ACCEL_TLS_V12 = BIT(2),
  88         MLX5_ACCEL_TLS_V13 = BIT(3),
  89         MLX5_ACCEL_TLS_LRO = BIT(4),
  90         MLX5_ACCEL_TLS_IPV6 = BIT(5),
  91         MLX5_ACCEL_TLS_AES_GCM128 = BIT(30),
  92         MLX5_ACCEL_TLS_AES_GCM256 = BIT(31),
  93 };
  94 
  95 struct mlx5_ifc_tls_flow_bits {
  96         u8         src_port[0x10];
  97         u8         dst_port[0x10];
  98         union mlx5_ifc_ipv6_layout_ipv4_layout_auto_bits src_ipv4_src_ipv6;
  99         union mlx5_ifc_ipv6_layout_ipv4_layout_auto_bits dst_ipv4_dst_ipv6;
 100         u8         ipv6[0x1];
 101         u8         direction_sx[0x1];
 102         u8         reserved_at_2[0x1e];
 103 };
 104 
 105 #ifdef CONFIG_MLX5_FPGA_TLS
 106 int mlx5_accel_tls_add_flow(struct mlx5_core_dev *mdev, void *flow,
 107                             struct tls_crypto_info *crypto_info,
 108                             u32 start_offload_tcp_sn, u32 *p_swid,
 109                             bool direction_sx);
 110 void mlx5_accel_tls_del_flow(struct mlx5_core_dev *mdev, u32 swid,
 111                              bool direction_sx);
 112 int mlx5_accel_tls_resync_rx(struct mlx5_core_dev *mdev, u32 handle, u32 seq,
 113                              u64 rcd_sn);
 114 bool mlx5_accel_is_tls_device(struct mlx5_core_dev *mdev);
 115 u32 mlx5_accel_tls_device_caps(struct mlx5_core_dev *mdev);
 116 int mlx5_accel_tls_init(struct mlx5_core_dev *mdev);
 117 void mlx5_accel_tls_cleanup(struct mlx5_core_dev *mdev);
 118 
 119 #else
 120 
 121 static inline int
 122 mlx5_accel_tls_add_flow(struct mlx5_core_dev *mdev, void *flow,
 123                         struct tls_crypto_info *crypto_info,
 124                         u32 start_offload_tcp_sn, u32 *p_swid,
 125                         bool direction_sx) { return -ENOTSUPP; }
 126 static inline void mlx5_accel_tls_del_flow(struct mlx5_core_dev *mdev, u32 swid,
 127                                            bool direction_sx) { }
 128 static inline int mlx5_accel_tls_resync_rx(struct mlx5_core_dev *mdev, u32 handle,
 129                                            u32 seq, u64 rcd_sn) { return 0; }
 130 static inline bool mlx5_accel_is_tls_device(struct mlx5_core_dev *mdev)
 131 {
 132         return mlx5_accel_is_ktls_device(mdev);
 133 }
 134 static inline u32 mlx5_accel_tls_device_caps(struct mlx5_core_dev *mdev) { return 0; }
 135 static inline int mlx5_accel_tls_init(struct mlx5_core_dev *mdev) { return 0; }
 136 static inline void mlx5_accel_tls_cleanup(struct mlx5_core_dev *mdev) { }
 137 #endif
 138 
 139 #endif  /* __MLX5_ACCEL_TLS_H__ */