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/* Copyright 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */

#ifndef WGSOCKET_H
#define WGSOCKET_H

#include <linux/netdevice.h>
#include <linux/udp.h>
#include <linux/if_vlan.h>
#include <linux/if_ether.h>

struct wireguard_device;
struct endpoint;

#define SKB_HEADER_LEN (max(sizeof(struct iphdr), sizeof(struct ipv6hdr)) + sizeof(struct udphdr) + NET_SKB_PAD)

int socket_init(struct wireguard_device *wg);
void socket_uninit(struct wireguard_device *wg);
int socket_send_buffer_to_peer(struct wireguard_peer *peer, void *data, size_t len, uint8_t ds);
int socket_send_skb_to_peer(struct wireguard_peer *peer, struct sk_buff *skb, uint8_t ds);
int socket_send_buffer_as_reply_to_skb(struct wireguard_device *wg, struct sk_buff *in_skb, void *out_buffer, size_t len);

int socket_endpoint_from_skb(struct endpoint *endpoint, struct sk_buff *skb);
void socket_set_peer_endpoint(struct wireguard_peer *peer, struct endpoint *endpoint);

#endif