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
16 struct 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
27 extern void iter_addresses(void *d, void (*cb)(unsigned char *,
28 unsigned char *, void *),
29 void *arg);
30
31 extern void *get_output_buffer(int *len_out);
32 extern void free_output_buffer(void *buffer);
33
34 extern int tap_open_common(void *dev, char *gate_addr);
35 extern void tap_check_ips(char *gate_addr, unsigned char *eth_addr);
36
37 extern void read_output(int fd, char *output_out, int len);
38
39 extern int net_read(int fd, void *buf, int len);
40 extern int net_recvfrom(int fd, void *buf, int len);
41 extern int net_write(int fd, void *buf, int len);
42 extern int net_send(int fd, void *buf, int len);
43 extern int net_sendto(int fd, void *buf, int len, void *to, int sock_len);
44
45 extern void open_addr(unsigned char *addr, unsigned char *netmask, void *arg);
46 extern void close_addr(unsigned char *addr, unsigned char *netmask, void *arg);
47
48 extern char *split_if_spec(char *str, ...);
49
50 extern int dev_netmask(void *d, void *m);
51
52 #endif
53
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