2 * Copyright (c) 2020 Doc.ai and/or its affiliates.
3 * Copyright (c) 2020 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef __included_wg_peer_h__
18 #define __included_wg_peer_h__
20 #include <vnet/ip/ip.h>
22 #include <wireguard/wireguard_cookie.h>
23 #include <wireguard/wireguard_timer.h>
24 #include <wireguard/wireguard_key.h>
25 #include <wireguard/wireguard_messages.h>
26 #include <wireguard/wireguard_if.h>
28 typedef struct ip4_udp_header_t_
32 } __clib_packed ip4_udp_header_t;
34 typedef struct ip6_udp_header_t_
38 } __clib_packed ip6_udp_header_t;
40 u8 *format_ip4_udp_header (u8 * s, va_list * va);
41 u8 *format_ip6_udp_header (u8 *s, va_list *va);
43 typedef struct wg_peer_endpoint_t_
49 typedef struct wg_peer
51 noise_remote_t remote;
52 cookie_maker_t cookie_maker;
54 u32 input_thread_index;
55 u32 output_thread_index;
58 wg_peer_endpoint_t dst;
59 wg_peer_endpoint_t src;
61 adj_index_t *adj_indices;
63 /* rewrite built from address information */
66 /* Vector of allowed-ips */
67 fib_prefix_t *allowed_ips;
69 /* The WG interface this peer is attached to */
73 tw_timer_wheel_16t_2w_512sl_t *timer_wheel;
74 u32 timers[WG_N_TIMERS];
75 u8 timers_dispatched[WG_N_TIMERS];
76 u32 timer_handshake_attempts;
77 u16 persistent_keepalive_interval;
80 f64 last_sent_handshake;
82 f64 last_received_packet;
84 f64 rehandshake_started;
86 /* Variable intervals */
87 u32 new_handshake_interval_tick;
88 u32 rehandshake_interval_tick;
90 bool timer_need_another_keepalive;
95 typedef struct wg_peer_table_bind_ctx_t_
97 ip_address_family_t af;
100 } wg_peer_table_bind_ctx_t;
102 int wg_peer_add (u32 tun_sw_if_index,
103 const u8 public_key_64[NOISE_PUBLIC_KEY_LEN],
105 const ip46_address_t * endpoint,
106 const fib_prefix_t * allowed_ips,
107 u16 port, u16 persistent_keepalive, index_t * peer_index);
108 int wg_peer_remove (u32 peer_index);
110 typedef walk_rc_t (*wg_peer_walk_cb_t) (index_t peeri, void *arg);
111 index_t wg_peer_walk (wg_peer_walk_cb_t fn, void *data);
113 u8 *format_wg_peer (u8 * s, va_list * va);
115 walk_rc_t wg_peer_if_admin_state_change (index_t peeri, void *data);
116 walk_rc_t wg_peer_if_delete (index_t peeri, void *data);
117 walk_rc_t wg_peer_if_adj_change (index_t peeri, void *data);
118 adj_walk_rc_t wg_peer_adj_walk (adj_index_t ai, void *data);
121 * Expoed for the data-plane
123 extern index_t *wg_peer_by_adj_index;
124 extern wg_peer_t *wg_peer_pool;
126 static inline wg_peer_t *
127 wg_peer_get (index_t peeri)
129 return (pool_elt_at_index (wg_peer_pool, peeri));
132 static inline index_t
133 wg_peer_get_by_adj_index (index_t ai)
135 return (wg_peer_by_adj_index[ai]);
139 * Makes choice for thread_id should be assigned.
142 wg_peer_assign_thread (u32 thread_id)
144 return ((thread_id) ? thread_id
145 : (vlib_num_workers ()?
146 ((unix_time_now_nsec () % vlib_num_workers ()) +
150 static_always_inline bool
151 fib_prefix_is_cover_addr_46 (const fib_prefix_t *p1, const ip46_address_t *ip)
153 switch (p1->fp_proto)
155 case FIB_PROTOCOL_IP4:
156 return (ip4_destination_matches_route (&ip4_main, &p1->fp_addr.ip4,
157 &ip->ip4, p1->fp_len) != 0);
158 case FIB_PROTOCOL_IP6:
159 return (ip6_destination_matches_route (&ip6_main, &p1->fp_addr.ip6,
160 &ip->ip6, p1->fp_len) != 0);
161 case FIB_PROTOCOL_MPLS:
167 #endif // __included_wg_peer_h__
170 * fd.io coding-style-patch-verification: ON
173 * eval: (c-set-style "gnu")