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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015-2019 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 wg_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 wg_allowedips_init(struct allowedips *table);
void wg_allowedips_free(struct allowedips *table, struct mutex *mutex);
int wg_allowedips_insert_v4(struct allowedips *table, const struct in_addr *ip,
u8 cidr, struct wg_peer *peer, struct mutex *lock);
int wg_allowedips_insert_v6(struct allowedips *table, const struct in6_addr *ip,
u8 cidr, struct wg_peer *peer, struct mutex *lock);
void wg_allowedips_remove_by_peer(struct allowedips *table,
struct wg_peer *peer, struct mutex *lock);
int wg_allowedips_walk_by_peer(struct allowedips *table,
struct allowedips_cursor *cursor,
struct wg_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 wg_peer *wg_allowedips_lookup_dst(struct allowedips *table,
struct sk_buff *skb);
struct wg_peer *wg_allowedips_lookup_src(struct allowedips *table,
struct sk_buff *skb);
#ifdef DEBUG
bool wg_allowedips_selftest(void);
#endif
#endif /* _WG_ALLOWEDIPS_H */
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