LXR linux/drivers/net/ethernet/mellanox/mlx5/core/en

   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 __MLX5E_IPSEC_H__
  35#define __MLX5E_IPSEC_H__
  36
  37#ifdef CONFIG_MLX5_EN_IPSEC
  38
  39#include <linux/mlx5/device.h>
  40#include <net/xfrm.h>
  41#include <linux/idr.h>
  42
  43#define MLX5E_IPSEC_SADB_RX_BITS 10
  44#define MLX5E_METADATA_ETHER_TYPE (0x8CE4)
  45#define MLX5E_METADATA_ETHER_LEN 8
  46
  47struct mlx5e_priv;
  48
  49struct mlx5e_ipsec_sw_stats {
  50        atomic64_t ipsec_rx_drop_sp_alloc;
  51        atomic64_t ipsec_rx_drop_sadb_miss;
  52        atomic64_t ipsec_rx_drop_syndrome;
  53        atomic64_t ipsec_tx_drop_bundle;
  54        atomic64_t ipsec_tx_drop_no_state;
  55        atomic64_t ipsec_tx_drop_not_ip;
  56        atomic64_t ipsec_tx_drop_trailer;
  57        atomic64_t ipsec_tx_drop_metadata;
  58};
  59
  60struct mlx5e_ipsec_stats {
  61        u64 ipsec_dec_in_packets;
  62        u64 ipsec_dec_out_packets;
  63        u64 ipsec_dec_bypass_packets;
  64        u64 ipsec_enc_in_packets;
  65        u64 ipsec_enc_out_packets;
  66        u64 ipsec_enc_bypass_packets;
  67        u64 ipsec_dec_drop_packets;
  68        u64 ipsec_dec_auth_fail_packets;
  69        u64 ipsec_enc_drop_packets;
  70        u64 ipsec_add_sa_success;
  71        u64 ipsec_add_sa_fail;
  72        u64 ipsec_del_sa_success;
  73        u64 ipsec_del_sa_fail;
  74        u64 ipsec_cmd_drop;
  75};
  76
  77struct mlx5e_ipsec {
  78        struct mlx5e_priv *en_priv;
  79        DECLARE_HASHTABLE(sadb_rx, MLX5E_IPSEC_SADB_RX_BITS);
  80        spinlock_t sadb_rx_lock; /* Protects sadb_rx and halloc */
  81        struct ida halloc;
  82        struct mlx5e_ipsec_sw_stats sw_stats;
  83        struct mlx5e_ipsec_stats stats;
  84};
  85
  86void mlx5e_ipsec_build_inverse_table(void);
  87int mlx5e_ipsec_init(struct mlx5e_priv *priv);
  88void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
  89void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);
  90
  91int mlx5e_ipsec_get_count(struct mlx5e_priv *priv);
  92int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv, uint8_t *data);
  93void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv);
  94int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data);
  95
  96struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *dev,
  97                                              unsigned int handle);
  98
  99#else
 100
 101static inline void mlx5e_ipsec_build_inverse_table(void)
 102{
 103}
 104
 105static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
 106{
 107        return 0;
 108}
 109
 110static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
 111{
 112}
 113
 114static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
 115{
 116}
 117
 118static inline int mlx5e_ipsec_get_count(struct mlx5e_priv *priv)
 119{
 120        return 0;
 121}
 122
 123static inline int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv,
 124                                          uint8_t *data)
 125{
 126        return 0;
 127}
 128
 129static inline void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv)
 130{
 131}
 132
 133static inline int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data)
 134{
 135        return 0;
 136}
 137
 138#endif
 139
 140#endif  /* __MLX5E_IPSEC_H__ */
 141