| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. |
| 4 | */ |
| 5 | |
| 6 | #ifndef _WG_PEER_H |
| 7 | #define _WG_PEER_H |
| 8 | |
| 9 | #include "device.h" |
| 10 | #include "noise.h" |
| 11 | #include "cookie.h" |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/netfilter.h> |
| 15 | #include <linux/spinlock.h> |
| 16 | #include <linux/kref.h> |
| 17 | #include <net/dst_cache.h> |
| 18 | |
| 19 | struct wg_device; |
| 20 | |
| 21 | struct endpoint { |
| 22 | union { |
| 23 | struct sockaddr addr; |
| 24 | struct sockaddr_in addr4; |
| 25 | struct sockaddr_in6 addr6; |
| 26 | }; |
| 27 | union { |
| 28 | struct { |
| 29 | struct in_addr src4; |
| 30 | /* Essentially the same as addr6->scope_id */ |
| 31 | int src_if4; |
| 32 | }; |
| 33 | struct in6_addr src6; |
| 34 | }; |
| 35 | }; |
| 36 | |
| 37 | struct wg_peer { |
| 38 | struct wg_device *device; |
| 39 | struct prev_queue tx_queue, rx_queue; |
| 40 | struct sk_buff_head staged_packet_queue; |
| 41 | int serial_work_cpu; |
| 42 | bool is_dead; |
| 43 | struct noise_keypairs keypairs; |
| 44 | struct endpoint endpoint; |
| 45 | struct dst_cache endpoint_cache; |
| 46 | rwlock_t endpoint_lock; |
| 47 | struct noise_handshake handshake; |
| 48 | atomic64_t last_sent_handshake; |
| 49 | struct work_struct transmit_handshake_work, clear_peer_work, transmit_packet_work; |
| 50 | struct cookie latest_cookie; |
| 51 | struct hlist_node pubkey_hash; |
| 52 | u64 rx_bytes, tx_bytes; |
| 53 | struct timer_list timer_retransmit_handshake, timer_send_keepalive; |
| 54 | struct timer_list timer_new_handshake, timer_zero_key_material; |
| 55 | struct timer_list timer_persistent_keepalive; |
| 56 | unsigned int timer_handshake_attempts; |
| 57 | u16 persistent_keepalive_interval; |
| 58 | bool timer_need_another_keepalive; |
| 59 | bool sent_lastminute_handshake; |
| 60 | struct timespec64 walltime_last_handshake; |
| 61 | struct kref refcount; |
| 62 | struct rcu_head rcu; |
| 63 | struct list_head peer_list; |
| 64 | struct list_head allowedips_list; |
| 65 | struct napi_struct napi; |
| 66 | u64 internal_id; |
| 67 | }; |
| 68 | |
| 69 | struct wg_peer *wg_peer_create(struct wg_device *wg, |
| 70 | const u8 public_key[NOISE_PUBLIC_KEY_LEN], |
| 71 | const u8 preshared_key[NOISE_SYMMETRIC_KEY_LEN]); |
| 72 | |
| 73 | struct wg_peer *__must_check wg_peer_get_maybe_zero(struct wg_peer *peer); |
| 74 | static inline struct wg_peer *wg_peer_get(struct wg_peer *peer) |
| 75 | { |
| 76 | kref_get(kref: &peer->refcount); |
| 77 | return peer; |
| 78 | } |
| 79 | void wg_peer_put(struct wg_peer *peer); |
| 80 | void wg_peer_remove(struct wg_peer *peer); |
| 81 | void wg_peer_remove_all(struct wg_device *wg); |
| 82 | |
| 83 | int wg_peer_init(void); |
| 84 | void wg_peer_uninit(void); |
| 85 | |
| 86 | #endif /* _WG_PEER_H */ |
| 87 |