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/* Copyright 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
#ifndef PEER_H
#define PEER_H
#include "noise.h"
#include "cookie.h"
#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/spinlock.h>
#include <linux/kref.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
#include <net/dst_cache.h>
#endif
struct wireguard_device;
struct endpoint {
union {
struct sockaddr_storage addr_storage;
struct sockaddr_in addr4;
struct sockaddr_in6 addr6;
};
union {
struct in_addr src4;
struct in6_addr src6;
};
};
struct wireguard_peer {
struct wireguard_device *device;
struct endpoint endpoint;
struct dst_cache endpoint_cache;
rwlock_t endpoint_lock;
struct noise_handshake handshake;
struct noise_keypairs keypairs;
uint64_t last_sent_handshake;
struct work_struct transmit_handshake_work, clear_peer_work;
struct cookie latest_cookie;
struct hlist_node pubkey_hash;
uint64_t rx_bytes, tx_bytes;
struct timer_list timer_retransmit_handshake, timer_send_keepalive, timer_new_handshake, timer_kill_ephemerals, timer_persistent_keepalive;
unsigned int timer_handshake_attempts;
unsigned long persistent_keepalive_interval;
bool timer_need_another_keepalive;
bool need_resend_queue;
bool sent_lastminute_handshake;
struct timeval walltime_last_handshake;
struct sk_buff_head tx_packet_queue;
struct kref refcount;
struct rcu_head rcu;
struct list_head peer_list;
uint64_t internal_id;
#ifdef CONFIG_WIREGUARD_PARALLEL
atomic_t parallel_encryption_inflight;
#endif
};
struct wireguard_peer *peer_create(struct wireguard_device *wg, const u8 public_key[NOISE_PUBLIC_KEY_LEN]);
struct wireguard_peer *peer_get(struct wireguard_peer *peer);
struct wireguard_peer *peer_rcu_get(struct wireguard_peer *peer);
void peer_put(struct wireguard_peer *peer);
void peer_remove(struct wireguard_peer *peer);
void peer_remove_all(struct wireguard_device *wg);
struct wireguard_peer *peer_lookup_by_index(struct wireguard_device *wg, u32 index);
int peer_for_each_unlocked(struct wireguard_device *wg, int (*fn)(struct wireguard_peer *peer, void *ctx), void *data);
int peer_for_each(struct wireguard_device *wg, int (*fn)(struct wireguard_peer *peer, void *ctx), void *data);
unsigned int peer_total_count(struct wireguard_device *wg);
#endif
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