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/*
* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
* Copyright (C) 2019-2020 Matt Dunwoodie <ncon@noconroy.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __IF_WG_H__
#define __IF_WG_H__
#include <sys/limits.h>
#include <sys/errno.h>
#include <net/if.h>
#include <netinet/in.h>
/*
* This is the public interface to the WireGuard network interface.
*
* It is designed to be used by tools such as ifconfig(8) and wg(8).
*/
#define WG_KEY_LEN 32
/*
* These ioctls do not need a NETLOCK as they use their own locks to serialise
* access.
*/
#define SIOCSWG _IOWR('i', 210, struct wg_data_io)
#define SIOCGWG _IOWR('i', 211, struct wg_data_io)
#define a_ipv4 a_addr.addr_ipv4
#define a_ipv6 a_addr.addr_ipv6
struct wg_aip_io {
sa_family_t a_af;
int a_cidr;
union wg_aip_addr {
struct in_addr addr_ipv4;
struct in6_addr addr_ipv6;
} a_addr;
};
#define WG_PEER_HAS_PUBLIC (1 << 0)
#define WG_PEER_HAS_PSK (1 << 1)
#define WG_PEER_HAS_PKA (1 << 2)
#define WG_PEER_HAS_ENDPOINT (1 << 3)
#define WG_PEER_REPLACE_AIPS (1 << 4)
#define WG_PEER_REMOVE (1 << 5)
#define WG_PEER_UPDATE (1 << 6)
#define p_sa p_endpoint.sa_sa
#define p_sin p_endpoint.sa_sin
#define p_sin6 p_endpoint.sa_sin6
struct wg_peer_io {
int p_flags;
int p_protocol_version;
uint8_t p_public[WG_KEY_LEN];
uint8_t p_psk[WG_KEY_LEN];
uint16_t p_pka;
union wg_peer_endpoint {
struct sockaddr sa_sa;
struct sockaddr_in sa_sin;
struct sockaddr_in6 sa_sin6;
} p_endpoint;
uint64_t p_txbytes;
uint64_t p_rxbytes;
struct timespec p_last_handshake; /* nanotime */
size_t p_aips_count;
struct wg_aip_io p_aips[];
};
#define WG_INTERFACE_HAS_PUBLIC (1 << 0)
#define WG_INTERFACE_HAS_PRIVATE (1 << 1)
#define WG_INTERFACE_HAS_PORT (1 << 2)
#define WG_INTERFACE_HAS_RTABLE (1 << 3)
#define WG_INTERFACE_REPLACE_PEERS (1 << 4)
struct wg_interface_io {
uint8_t i_flags;
in_port_t i_port;
int i_rtable;
uint8_t i_public[WG_KEY_LEN];
uint8_t i_private[WG_KEY_LEN];
size_t i_peers_count;
struct wg_peer_io i_peers[];
};
struct wg_data_io {
char wgd_name[IFNAMSIZ];
size_t wgd_size; /* total size of the memory pointed to by wgd_interface */
struct wg_interface_io *wgd_interface;
};
#endif /* __IF_WG_H__ */
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