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
mlx5e_ipsec_build_inverse_table(void)122 static inline void mlx5e_ipsec_build_inverse_table(void)
123 {
124 }
125
mlx5e_ipsec_init(struct mlx5e_priv * priv)126 static inline int mlx5e_ipsec_init(struct mlx5e_priv *priv)
127 {
128 return 0;
129 }
130
mlx5e_ipsec_cleanup(struct mlx5e_priv * priv)131 static inline void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
132 {
133 }
134
mlx5e_ipsec_build_netdev(struct mlx5e_priv * priv)135 static inline void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
136 {
137 }
138
mlx5e_ipsec_get_count(struct mlx5e_priv * priv)139 static inline int mlx5e_ipsec_get_count(struct mlx5e_priv *priv)
140 {
141 return 0;
142 }
143
mlx5e_ipsec_get_strings(struct mlx5e_priv * priv,uint8_t * data)144 static inline int mlx5e_ipsec_get_strings(struct mlx5e_priv *priv,
145 uint8_t *data)
146 {
147 return 0;
148 }
149
mlx5e_ipsec_update_stats(struct mlx5e_priv * priv)150 static inline void mlx5e_ipsec_update_stats(struct mlx5e_priv *priv)
151 {
152 }
153
mlx5e_ipsec_get_stats(struct mlx5e_priv * priv,u64 * data)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__ */
162
