				/*
				* Copyright (c) 2019 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 <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(4).
				*/

				#define WG_KEY_SIZE 32

				#define WG_DEVICE_HAS_PUBKEY (1 << 0)
				#define WG_DEVICE_HAS_PRIVKEY (1 << 1)
				#define WG_DEVICE_HAS_MASKED_PRIVKEY (1 << 2)
				#define WG_DEVICE_HAS_PORT (1 << 3)
				#define WG_DEVICE_HAS_RDOMAIN (1 << 4)
				#define WG_DEVICE_REPLACE_PEERS (1 << 5)

				#define WG_PEER_HAS_PUBKEY (1 << 0)
				#define WG_PEER_HAS_SHAREDKEY (1 << 1)
				#define WG_PEER_HAS_MASKED_SHAREDKEY (1 << 2)
				#define WG_PEER_HAS_ENDPOINT (1 << 3)
				#define WG_PEER_HAS_PERSISTENTKEEPALIVE (1 << 4)
				#define WG_PEER_REPLACE_CIDRS (1 << 5)
				#define WG_PEER_REMOVE (1 << 6)

				#define SIOCSWG _IOWR('i', 200, struct wg_device_io)
				#define SIOCGWG _IOWR('i', 201, struct wg_device_io)

				#define WG_PEERS_FOREACH(p, d) \
				for (p = (d)->d_peers; p < (d)->d_peers + (d)->d_num_peers; p++)
				#define WG_CIDRS_FOREACH(c, p) \
				for (c = (p)->p_cidrs; c < (p)->p_cidrs + (p)->p_num_cidrs; c++)

				struct wg_allowedip {
				struct sockaddr_storage a_addr;
				struct sockaddr_storage a_mask;
				};

				enum {
				WG_PEER_CTR_TX_BYTES,
				WG_PEER_CTR_RX_BYTES,
				WG_PEER_CTR_NUM,
				};

				struct wg_device_io {
				char d_name[IFNAMSIZ];
				uint8_t d_flags;
				in_port_t d_port;
				int d_rdomain;
				uint8_t d_pubkey[WG_KEY_SIZE];
				uint8_t d_privkey[WG_KEY_SIZE];
				size_t d_num_peers;
				size_t d_num_cidrs;
				struct wg_peer_io *d_peers;
				};


				#ifndef ENOKEY
				#define ENOKEY ENOTCAPABLE
				#endif

				typedef enum {
				WGC_GET = 0x5,
				WGC_SET = 0x6,
				} wg_cmd_t;

				#endif /* __IF_WG_H__ */

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