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 47 struct mlx5e_priv; 48 49 struct 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 60 struct 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 77 struct 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 86 void mlx5e_ipsec_build_inverse_table(void); 87 int mlx5e_ipsec_init(struct mlx5e_priv *priv); 88 void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv); 89 void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv); 90 91 int mlx5e_ipsec_get_count(struct mlx5e_priv *priv); 92 int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv, uint8_t *data); 93 void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv); 94 int mlx5e_ipsec_get_stats(struct mlx5e_priv *priv, u64 *data); 95 96 struct xfrm_state *mlx5e_ipsec_sadb_rx_lookup(struct mlx5e_ipsec *dev, 97 unsigned int handle); 98 99 #else 100 101 static inline void mlx5e_ipsec_build_inverse_table(void) 102 { 103 } 104 105 static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv) 106 { 107 return 0; 108 } 109 110 static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv) 111 { 112 } 113 114 static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv) 115 { 116 } 117 118 static inline int mlx5e_ipsec_get_count(struct mlx5e_priv *priv) 119 { 120 return 0; 121 } 122 123 static inline int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv, 124 uint8_t *data) 125 { 126 return 0; 127 } 128 129 static inline void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv) 130 { 131 } 132 133 static 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