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#include "accel/ipsec.h"
  44
  45#define MLX5E_IPSEC_SADB_RX_BITS 10
  46#define MLX5E_IPSEC_ESN_SCOPE_MID 0x80000000L
  47
  48struct mlx5e_priv;
  49
  50struct mlx5e_ipsec_sw_stats {
  51        atomic64_t ipsec_rx_drop_sp_alloc;
  52        atomic64_t ipsec_rx_drop_sadb_miss;
  53        atomic64_t ipsec_rx_drop_syndrome;
  54        atomic64_t ipsec_tx_drop_bundle;
  55        atomic64_t ipsec_tx_drop_no_state;
  56        atomic64_t ipsec_tx_drop_not_ip;
  57        atomic64_t ipsec_tx_drop_trailer;
  58        atomic64_t ipsec_tx_drop_metadata;
  59};
  60
  61struct mlx5e_ipsec_stats {
  62        u64 ipsec_dec_in_packets;
  63        u64 ipsec_dec_out_packets;
  64        u64 ipsec_dec_bypass_packets;
  65        u64 ipsec_enc_in_packets;
  66        u64 ipsec_enc_out_packets;
  67        u64 ipsec_enc_bypass_packets;
  68        u64 ipsec_dec_drop_packets;
  69        u64 ipsec_dec_auth_fail_packets;
  70        u64 ipsec_enc_drop_packets;
  71        u64 ipsec_add_sa_success;
  72        u64 ipsec_add_sa_fail;
  73        u64 ipsec_del_sa_success;
  74        u64 ipsec_del_sa_fail;
  75        u64 ipsec_cmd_drop;
  76};
  77
  78struct mlx5e_ipsec {
  79        struct mlx5e_priv *en_priv;
  80        DECLARE_HASHTABLE(sadb_rx, MLX5E_IPSEC_SADB_RX_BITS);
  81        bool no_trailer;
  82        spinlock_t sadb_rx_lock; /* Protects sadb_rx and halloc */
  83        struct ida halloc;
  84        struct mlx5e_ipsec_sw_stats sw_stats;
  85        struct mlx5e_ipsec_stats stats;
  86        struct workqueue_struct *wq;
  87};
  88
  89struct mlx5e_ipsec_esn_state {
  90        u32 esn;
  91        u8 trigger: 1;
  92        u8 overlap: 1;
  93};
  94
  95struct mlx5e_ipsec_sa_entry {
  96        struct hlist_node hlist; /* Item in SADB_RX hashtable */
  97        struct mlx5e_ipsec_esn_state esn_state;
  98        unsigned int handle; /* Handle in SADB_RX */
  99        struct xfrm_state *x;
 100        struct mlx5e_ipsec *ipsec;
 101        struct mlx5_accel_esp_xfrm *xfrm;
 102        void *hw_context;
 103        void (*set_iv_op)(struct sk_buff *skb, struct xfrm_state *x,
 104                          struct xfrm_offload *xo);
 105};
 106
 107void mlx5e_ipsec_build_inverse_table(void);
 108int mlx5e_ipsec_init(struct mlx5e_priv *priv);
 109void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
 110void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);
 111
 112int mlx5e_ipsec_get_count(struct mlx5e_priv *priv);
 113int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv, uint8_t *data);
 114void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv);
 115int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data);
 116
 117struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *dev,
 118                                              unsigned int handle);
 119
 120#else
 121
 122static inline void mlx5e_ipsec_build_inverse_table(void)
 123{
 124}
 125
 126static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
 127{
 128        return 0;
 129}
 130
 131static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
 132{
 133}
 134
 135static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
 136{
 137}
 138
 139static inline int mlx5e_ipsec_get_count(struct mlx5e_priv *priv)
 140{
 141        return 0;
 142}
 143
 144static inline int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv,
 145                                          uint8_t *data)
 146{
 147        return 0;
 148}
 149
 150static inline void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv)
 151{
 152}
 153
 154static inline int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data)
 155{
 156        return 0;
 157}
 158
 159#endif
 160
 161#endif  /* __MLX5E_IPSEC_H__ */
 162