60 строки
1.8 KiB
C
60 строки
1.8 KiB
C
/* 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 wg_peer __rcu *peer;
|
|
struct allowedips_node __rcu *bit[2];
|
|
/* While it may seem scandalous that we waste space for v4,
|
|
* we're alloc'ing to the nearest power of 2 anyway, so this
|
|
* doesn't actually make a difference.
|
|
*/
|
|
u8 bits[16] __aligned(__alignof(u64));
|
|
u8 cidr, bit_at_a, bit_at_b, bitlen;
|
|
|
|
/* Keep rarely used list at bottom to be beyond cache line. */
|
|
union {
|
|
struct list_head peer_list;
|
|
struct rcu_head rcu;
|
|
};
|
|
};
|
|
|
|
struct allowedips {
|
|
struct allowedips_node __rcu *root4;
|
|
struct allowedips_node __rcu *root6;
|
|
u64 seq;
|
|
};
|
|
|
|
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);
|
|
/* The ip input pointer should be __aligned(__alignof(u64))) */
|
|
int wg_allowedips_read_node(struct allowedips_node *node, u8 ip[16], u8 *cidr);
|
|
|
|
/* 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 */
|