1 /*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Global definitions for the INET interface module.
7 *
8 * Version: @(#)if.h 1.0.2 04/18/93
9 *
10 * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
11 * Ross Biro, <bir7@leland.Stanford.Edu>
12 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
18 */
19 #ifndef _LINUX_IF_H
20 #define _LINUX_IF_H
21
22 #include <linux/types.h> /* for "__kernel_caddr_t" et al */
23 #include <linux/socket.h> /* for "struct sockaddr" et al */
24
25 /* Standard interface flags. */
26 #define IFF_UP 0x1 /* interface is up */
27 #define IFF_BROADCAST 0x2 /* broadcast address valid */
28 #define IFF_DEBUG 0x4 /* turn on debugging */
29 #define IFF_LOOPBACK 0x8 /* is a loopback net */
30 #define IFF_POINTOPOINT 0x10 /* interface is has p-p link */
31 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
32 #define IFF_RUNNING 0x40 /* resources allocated */
33 #define IFF_NOARP 0x80 /* no ARP protocol */
34 #define IFF_PROMISC 0x100 /* receive all packets */
35 #define IFF_ALLMULTI 0x200 /* receive all multicast packets*/
36
37 #define IFF_MASTER 0x400 /* master of a load balancer */
38 #define IFF_SLAVE 0x800 /* slave of a load balancer */
39
40 #define IFF_MULTICAST 0x1000 /* Supports multicast */
41
42 #define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_MASTER|IFF_SLAVE|IFF_RUNNING)
43
44 #define IFF_PORTSEL 0x2000 /* can set media type */
45 #define IFF_AUTOMEDIA 0x4000 /* auto media select active */
46 #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/
47
48 /*
49 * Device mapping structure. I'd just gone off and designed a
50 * beautiful scheme using only loadable modules with arguments
51 * for driver options and along come the PCMCIA people 8)
52 *
53 * Ah well. The get() side of this is good for WDSETUP, and it'll
54 * be handy for debugging things. The set side is fine for now and
55 * being very small might be worth keeping for clean configuration.
56 */
57
58 struct ifmap
59 {
60 unsigned long mem_start;
61 unsigned long mem_end;
62 unsigned short base_addr;
63 unsigned char irq;
64 unsigned char dma;
65 unsigned char port;
66 /* 3 bytes spare */
67 };
68
69 /*
70 * Interface request structure used for socket
71 * ioctl's. All interface ioctl's must have parameter
72 * definitions which begin with ifr_name. The
73 * remainder may be interface specific.
74 */
75
76 struct ifreq
77 {
78 #define IFHWADDRLEN 6
79 #define IFNAMSIZ 16
80 union
81 {
82 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
83 } ifr_ifrn;
84
85 union {
86 struct sockaddr ifru_addr;
87 struct sockaddr ifru_dstaddr;
88 struct sockaddr ifru_broadaddr;
89 struct sockaddr ifru_netmask;
90 struct sockaddr ifru_hwaddr;
91 short ifru_flags;
92 int ifru_ivalue;
93 int ifru_mtu;
94 struct ifmap ifru_map;
95 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
96 char ifru_newname[IFNAMSIZ];
97 char * ifru_data;
98 } ifr_ifru;
99 };
100
101 #define ifr_name ifr_ifrn.ifrn_name /* interface name */
102 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
103 #define ifr_addr ifr_ifru.ifru_addr /* address */
104 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
105 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
106 #define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
107 #define ifr_flags ifr_ifru.ifru_flags /* flags */
108 #define ifr_metric ifr_ifru.ifru_ivalue /* metric */
109 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
110 #define ifr_map ifr_ifru.ifru_map /* device map */
111 #define ifr_slave ifr_ifru.ifru_slave /* slave device */
112 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
113 #define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
114 #define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */
115 #define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */
116 #define ifr_newname ifr_ifru.ifru_newname /* New name */
117
118 /*
119 * Structure used in SIOCGIFCONF request.
120 * Used to retrieve interface configuration
121 * for machine (useful for programs which
122 * must know all networks accessible).
123 */
124
125 struct ifconf
126 {
127 int ifc_len; /* size of buffer */
128 union
129 {
130 char * ifcu_buf;
131 struct ifreq *ifcu_req;
132 } ifc_ifcu;
133 };
134 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
135 #define ifc_req ifc_ifcu.ifcu_req /* array of structures */
136
137
138 #endif /* _LINUX_IF_H */
139
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.