/arch/um/include/shared/net_user.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 4 */
 5
 6#ifndef __UM_NET_USER_H__
 7#define __UM_NET_USER_H__
 8
 9#define ETH_ADDR_LEN (6)
10#define ETH_HEADER_ETHERTAP (16)
11#define ETH_HEADER_OTHER (26) /* 14 for ethernet + VLAN + MPLS for crazy people */
12#define ETH_MAX_PACKET (1500)
13
14#define UML_NET_VERSION (4)
15
16struct net_user_info {
17	int (*init)(void *, void *);
18	int (*open)(void *);
19	void (*close)(int, void *);
20	void (*remove)(void *);
21	void (*add_address)(unsigned char *, unsigned char *, void *);
22	void (*delete_address)(unsigned char *, unsigned char *, void *);
23	int max_packet;
24	int mtu;
25};
26
27extern void ether_user_init(void *data, void *dev);
28extern void iter_addresses(void *d, void (*cb)(unsigned char *,
29					       unsigned char *, void *),
30			   void *arg);
31
32extern void *get_output_buffer(int *len_out);
33extern void free_output_buffer(void *buffer);
34
35extern int tap_open_common(void *dev, char *gate_addr);
36extern void tap_check_ips(char *gate_addr, unsigned char *eth_addr);
37
38extern void read_output(int fd, char *output_out, int len);
39
40extern int net_read(int fd, void *buf, int len);
41extern int net_recvfrom(int fd, void *buf, int len);
42extern int net_write(int fd, void *buf, int len);
43extern int net_send(int fd, void *buf, int len);
44extern int net_sendto(int fd, void *buf, int len, void *to, int sock_len);
45
46extern void open_addr(unsigned char *addr, unsigned char *netmask, void *arg);
47extern void close_addr(unsigned char *addr, unsigned char *netmask, void *arg);
48
49extern char *split_if_spec(char *str, ...);
50
51extern int dev_netmask(void *d, void *m);
52
53#endif