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 ether_user_init(void *data, void *dev); 28 extern void iter_addresses(void *d, void (*cb)(unsigned char *, 29 unsigned char *, void *), 30 void *arg); 31 32 extern void *get_output_buffer(int *len_out); 33 extern void free_output_buffer(void *buffer); 34 35 extern int tap_open_common(void *dev, char *gate_addr); 36 extern void tap_check_ips(char *gate_addr, unsigned char *eth_addr); 37 38 extern void read_output(int fd, char *output_out, int len); 39 40 extern int net_read(int fd, void *buf, int len); 41 extern int net_recvfrom(int fd, void *buf, int len); 42 extern int net_write(int fd, void *buf, int len); 43 extern int net_send(int fd, void *buf, int len); 44 extern int net_sendto(int fd, void *buf, int len, void *to, int sock_len); 45 46 extern void open_addr(unsigned char *addr, unsigned char *netmask, void *arg); 47 extern void close_addr(unsigned char *addr, unsigned char *netmask, void *arg); 48 49 extern char *split_if_spec(char *str, ...); 50 51 extern int dev_netmask(void *d, void *m); 52 53 #endif 54