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 <vlibapi/api_helper_macros.h>
22 #include <vnet/ip/ip.h>
24 #include <wireguard/wireguard_cookie.h>
25 #include <wireguard/wireguard_timer.h>
26 #include <wireguard/wireguard_key.h>
27 #include <wireguard/wireguard_messages.h>
28 #include <wireguard/wireguard_if.h>
30 typedef struct ip4_udp_header_t_
34 } __clib_packed ip4_udp_header_t;
36 typedef struct ip4_udp_wg_header_t_
41 } __clib_packed ip4_udp_wg_header_t;
43 typedef struct ip6_udp_header_t_
47 } __clib_packed ip6_udp_header_t;
49 typedef struct ip6_udp_wg_header_t_
54 } __clib_packed ip6_udp_wg_header_t;
56 u8 *format_ip4_udp_header (u8 * s, va_list * va);
57 u8 *format_ip6_udp_header (u8 *s, va_list *va);
59 typedef struct wg_peer_endpoint_t_
67 WG_PEER_STATUS_DEAD = 0x1,
68 WG_PEER_ESTABLISHED = 0x2,
71 typedef struct wg_peer
73 noise_remote_t remote;
74 cookie_maker_t cookie_maker;
76 u32 input_thread_index;
77 u32 output_thread_index;
80 wg_peer_endpoint_t dst;
81 wg_peer_endpoint_t src;
83 adj_index_t *adj_indices;
85 /* rewrite built from address information */
88 /* Vector of allowed-ips */
89 fib_prefix_t *allowed_ips;
91 /* The WG interface this peer is attached to */
94 /* API client registered for events */
95 vpe_client_registration_t *api_clients;
96 uword *api_client_by_client_index;
100 tw_timer_wheel_16t_2w_512sl_t *timer_wheel;
101 u32 timers[WG_N_TIMERS];
102 u8 timers_dispatched[WG_N_TIMERS];
103 u32 timer_handshake_attempts;
104 u16 persistent_keepalive_interval;
107 f64 last_sent_handshake;
108 f64 last_sent_packet;
109 f64 last_received_packet;
111 f64 rehandshake_started;
113 /* Variable intervals */
114 u32 new_handshake_interval_tick;
115 u32 rehandshake_interval_tick;
117 bool timer_need_another_keepalive;
120 typedef struct wg_peer_table_bind_ctx_t_
122 ip_address_family_t af;
125 } wg_peer_table_bind_ctx_t;
127 int wg_peer_add (u32 tun_sw_if_index,
128 const u8 public_key_64[NOISE_PUBLIC_KEY_LEN],
130 const ip46_address_t * endpoint,
131 const fib_prefix_t * allowed_ips,
132 u16 port, u16 persistent_keepalive, index_t * peer_index);
133 int wg_peer_remove (u32 peer_index);
135 typedef walk_rc_t (*wg_peer_walk_cb_t) (index_t peeri, void *arg);
136 index_t wg_peer_walk (wg_peer_walk_cb_t fn, void *data);
138 u8 *format_wg_peer (u8 * s, va_list * va);
140 walk_rc_t wg_peer_if_admin_state_change (index_t peeri, void *data);
141 walk_rc_t wg_peer_if_delete (index_t peeri, void *data);
142 walk_rc_t wg_peer_if_adj_change (index_t peeri, void *data);
143 adj_walk_rc_t wg_peer_adj_walk (adj_index_t ai, void *data);
145 void wg_api_peer_event (index_t peeri, wg_peer_flags flags);
146 void wg_peer_update_flags (index_t peeri, wg_peer_flags flag, bool add_del);
147 void wg_peer_update_endpoint (index_t peeri, const ip46_address_t *addr,
149 void wg_peer_update_endpoint_from_mt (index_t peeri,
150 const ip46_address_t *addr, u16 port);
153 wg_peer_is_dead (wg_peer_t *peer)
155 return peer && peer->flags & WG_PEER_STATUS_DEAD;
159 * Expoed for the data-plane
161 extern index_t *wg_peer_by_adj_index;
162 extern wg_peer_t *wg_peer_pool;
164 static inline wg_peer_t *
165 wg_peer_get (index_t peeri)
167 return (pool_elt_at_index (wg_peer_pool, peeri));
170 static inline index_t
171 wg_peer_get_by_adj_index (index_t ai)
173 if (ai >= vec_len (wg_peer_by_adj_index))
174 return INDEX_INVALID;
175 return (wg_peer_by_adj_index[ai]);
179 * Makes choice for thread_id should be assigned.
182 wg_peer_assign_thread (u32 thread_id)
184 return ((thread_id) ? thread_id
185 : (vlib_num_workers ()?
186 ((unix_time_now_nsec () % vlib_num_workers ()) +
190 static_always_inline bool
191 fib_prefix_is_cover_addr_46 (const fib_prefix_t *p1, const ip46_address_t *ip)
193 switch (p1->fp_proto)
195 case FIB_PROTOCOL_IP4:
196 return (ip4_destination_matches_route (&ip4_main, &p1->fp_addr.ip4,
197 &ip->ip4, p1->fp_len) != 0);
198 case FIB_PROTOCOL_IP6:
199 return (ip6_destination_matches_route (&ip6_main, &p1->fp_addr.ip6,
200 &ip->ip6, p1->fp_len) != 0);
201 case FIB_PROTOCOL_MPLS:
208 wg_peer_can_send (wg_peer_t *peer)
210 return peer && peer->rewrite;
213 #endif // __included_wg_peer_h__
216 * fd.io coding-style-patch-verification: ON
219 * eval: (c-set-style "gnu")