LXR linux/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.h

   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
  45unsigned int mlx5_accel_ipsec_counters_count(struct mlx5_core_dev *mdev);
  46int mlx5_accel_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters,
  47                                   unsigned int count);
  48
  49void *mlx5_accel_esp_create_hw_context(struct mlx5_core_dev *mdev,
  50                                       struct mlx5_accel_esp_xfrm *xfrm,
  51                                       u32 *sa_handle);
  52void mlx5_accel_esp_free_hw_context(struct mlx5_core_dev *mdev, void *context);
  53
  54void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev);
  55void mlx5_accel_ipsec_cleanup(struct mlx5_core_dev *mdev);
  56
  57struct 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
  80static inline void *
  81mlx5_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
  88static inline void mlx5_accel_esp_free_hw_context(struct mlx5_core_dev *mdev, void *context) {}
  89
  90static inline void mlx5_accel_ipsec_init(struct mlx5_core_dev *mdev) {}
  91
  92static 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