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/* Copyright (C) 2015-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
#ifndef _WG_ALLOWEDIPS_H
#define _WG_ALLOWEDIPS_H
#include <linux/mutex.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
struct wireguard_peer;
struct allowedips_node;
struct allowedips {
struct allowedips_node __rcu *root4;
struct allowedips_node __rcu *root6;
u64 seq;
};
struct allowedips_cursor {
u64 seq;
struct allowedips_node *stack[128];
unsigned int len;
bool second_half;
};
void allowedips_init(struct allowedips *table);
void allowedips_free(struct allowedips *table, struct mutex *mutex);
int allowedips_insert_v4(struct allowedips *table, const struct in_addr *ip, u8 cidr, struct wireguard_peer *peer, struct mutex *lock);
int allowedips_insert_v6(struct allowedips *table, const struct in6_addr *ip, u8 cidr, struct wireguard_peer *peer, struct mutex *lock);
void allowedips_remove_by_peer(struct allowedips *table, struct wireguard_peer *peer, struct mutex *lock);
int allowedips_walk_by_peer(struct allowedips *table, struct allowedips_cursor *cursor, struct wireguard_peer *peer, int (*func)(void *ctx, const u8 *ip, u8 cidr, int family), void *ctx, struct mutex *lock);
/* These return a strong reference to a peer: */
struct wireguard_peer *allowedips_lookup_dst(struct allowedips *table, struct sk_buff *skb);
struct wireguard_peer *allowedips_lookup_src(struct allowedips *table, struct sk_buff *skb);
#ifdef DEBUG
bool allowedips_selftest(void);
#endif
#endif /* _WG_ALLOWEDIPS_H */
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