root/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h

INCLUDED FROM

DEFINITIONS

1. mlx5e_ipsec_build_inverse_table
2. mlx5e_ipsec_init
3. mlx5e_ipsec_cleanup
4. mlx5e_ipsec_build_netdev
5. mlx5e_ipsec_get_count
6. mlx5e_ipsec_get_strings
7. mlx5e_ipsec_update_stats
8. mlx5e_ipsec_get_stats

   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 
  48 struct mlx5e_priv;
  49 
  50 struct 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 
  61 struct 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 
  78 struct 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 
  89 struct mlx5e_ipsec_esn_state {
  90         u32 esn;
  91         u8 trigger: 1;
  92         u8 overlap: 1;
  93 };
  94 
  95 struct 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 
 107 void mlx5e_ipsec_build_inverse_table(void);
 108 int mlx5e_ipsec_init(struct mlx5e_priv *priv);
 109 void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv);
 110 void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv);
 111 
 112 int mlx5e_ipsec_get_count(struct mlx5e_priv *priv);
 113 int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv, uint8_t *data);
 114 void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv);
 115 int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data);
 116 
 117 struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *dev,
 118                                               unsigned int handle);
 119 
 120 #else
 121 
 122 static inline void mlx5e_ipsec_build_inverse_table(void)
 123 {
 124 }
 125 
 126 static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
 127 {
 128         return 0;
 129 }
 130 
 131 static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
 132 {
 133 }
 134 
 135 static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
 136 {
 137 }
 138 
 139 static inline int mlx5e_ipsec_get_count(struct mlx5e_priv *priv)
 140 {
 141         return 0;
 142 }
 143 
 144 static inline int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv,
 145                                           uint8_t *data)
 146 {
 147         return 0;
 148 }
 149 
 150 static inline void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv)
 151 {
 152 }
 153 
 154 static 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__ */