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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
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 #include <linux/compiler.h> /* for "__user" et al */
25
26 #define IFNAMSIZ 16
27 #include <linux/hdlc/ioctl.h>
28
29 /* Standard interface flags (netdevice->flags). */
30 #define IFF_UP 0x1 /* interface is up */
31 #define IFF_BROADCAST 0x2 /* broadcast address valid */
32 #define IFF_DEBUG 0x4 /* turn on debugging */
33 #define IFF_LOOPBACK 0x8 /* is a loopback net */
34 #define IFF_POINTOPOINT 0x10 /* interface is has p-p link */
35 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
36 #define IFF_RUNNING 0x40 /* interface RFC2863 OPER_UP */
37 #define IFF_NOARP 0x80 /* no ARP protocol */
38 #define IFF_PROMISC 0x100 /* receive all packets */
39 #define IFF_ALLMULTI 0x200 /* receive all multicast packets*/
40
41 #define IFF_MASTER 0x400 /* master of a load balancer */
42 #define IFF_SLAVE 0x800 /* slave of a load balancer */
43
44 #define IFF_MULTICAST 0x1000 /* Supports multicast */
45
46 #define IFF_PORTSEL 0x2000 /* can set media type */
47 #define IFF_AUTOMEDIA 0x4000 /* auto media select active */
48 #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/
49
50 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
51 #define IFF_DORMANT 0x20000 /* driver signals dormant */
52
53 #define IFF_ECHO 0x40000 /* echo sent packets */
54
55 #define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
56 IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
57
58 /* Private (from user) interface flags (netdevice->priv_flags). */
59 #define IFF_802_1Q_VLAN 0x1 /* 802.1Q VLAN device. */
60 #define IFF_EBRIDGE 0x2 /* Ethernet bridging device. */
61 #define IFF_SLAVE_INACTIVE 0x4 /* bonding slave not the curr. active */
62 #define IFF_MASTER_8023AD 0x8 /* bonding master, 802.3ad. */
63 #define IFF_MASTER_ALB 0x10 /* bonding master, balance-alb. */
64 #define IFF_BONDING 0x20 /* bonding master or slave */
65 #define IFF_SLAVE_NEEDARP 0x40 /* need ARPs for validation */
66 #define IFF_ISATAP 0x80 /* ISATAP interface (RFC4214) */
67
68 #define IF_GET_IFACE 0x0001 /* for querying only */
69 #define IF_GET_PROTO 0x0002
70
71 /* For definitions see hdlc.h */
72 #define IF_IFACE_V35 0x1000 /* V.35 serial interface */
73 #define IF_IFACE_V24 0x1001 /* V.24 serial interface */
74 #define IF_IFACE_X21 0x1002 /* X.21 serial interface */
75 #define IF_IFACE_T1 0x1003 /* T1 telco serial interface */
76 #define IF_IFACE_E1 0x1004 /* E1 telco serial interface */
77 #define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */
78 #define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */
79
80 /* For definitions see hdlc.h */
81 #define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */
82 #define IF_PROTO_PPP 0x2001 /* PPP protocol */
83 #define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */
84 #define IF_PROTO_FR 0x2003 /* Frame Relay protocol */
85 #define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */
86 #define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */
87 #define IF_PROTO_X25 0x2006 /* X.25 */
88 #define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */
89 #define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */
90 #define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */
91 #define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */
92 #define IF_PROTO_FR_ETH_PVC 0x200B
93 #define IF_PROTO_RAW 0x200C /* RAW Socket */
94
95 /* RFC 2863 operational status */
96 enum {
97 IF_OPER_UNKNOWN,
98 IF_OPER_NOTPRESENT,
99 IF_OPER_DOWN,
100 IF_OPER_LOWERLAYERDOWN,
101 IF_OPER_TESTING,
102 IF_OPER_DORMANT,
103 IF_OPER_UP,
104 };
105
106 /* link modes */
107 enum {
108 IF_LINK_MODE_DEFAULT,
109 IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
110 };
111
112 /*
113 * Device mapping structure. I'd just gone off and designed a
114 * beautiful scheme using only loadable modules with arguments
115 * for driver options and along come the PCMCIA people 8)
116 *
117 * Ah well. The get() side of this is good for WDSETUP, and it'll
118 * be handy for debugging things. The set side is fine for now and
119 * being very small might be worth keeping for clean configuration.
120 */
121
122 struct ifmap
123 {
124 unsigned long mem_start;
125 unsigned long mem_end;
126 unsigned short base_addr;
127 unsigned char irq;
128 unsigned char dma;
129 unsigned char port;
130 /* 3 bytes spare */
131 };
132
133 struct if_settings
134 {
135 unsigned int type; /* Type of physical device or protocol */
136 unsigned int size; /* Size of the data allocated by the caller */
137 union {
138 /* {atm/eth/dsl}_settings anyone ? */
139 raw_hdlc_proto __user *raw_hdlc;
140 cisco_proto __user *cisco;
141 fr_proto __user *fr;
142 fr_proto_pvc __user *fr_pvc;
143 fr_proto_pvc_info __user *fr_pvc_info;
144
145 /* interface settings */
146 sync_serial_settings __user *sync;
147 te1_settings __user *te1;
148 } ifs_ifsu;
149 };
150
151 /*
152 * Interface request structure used for socket
153 * ioctl's. All interface ioctl's must have parameter
154 * definitions which begin with ifr_name. The
155 * remainder may be interface specific.
156 */
157
158 struct ifreq
159 {
160 #define IFHWADDRLEN 6
161 union
162 {
163 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
164 } ifr_ifrn;
165
166 union {
167 struct sockaddr ifru_addr;
168 struct sockaddr ifru_dstaddr;
169 struct sockaddr ifru_broadaddr;
170 struct sockaddr ifru_netmask;
171 struct sockaddr ifru_hwaddr;
172 short ifru_flags;
173 int ifru_ivalue;
174 int ifru_mtu;
175 struct ifmap ifru_map;
176 char ifru_slave[IFNAMSIZ]; /* Just fits the size */
177 char ifru_newname[IFNAMSIZ];
178 void __user * ifru_data;
179 struct if_settings ifru_settings;
180 } ifr_ifru;
181 };
182
183 #define ifr_name ifr_ifrn.ifrn_name /* interface name */
184 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
185 #define ifr_addr ifr_ifru.ifru_addr /* address */
186 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
187 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
188 #define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
189 #define ifr_flags ifr_ifru.ifru_flags /* flags */
190 #define ifr_metric ifr_ifru.ifru_ivalue /* metric */
191 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
192 #define ifr_map ifr_ifru.ifru_map /* device map */
193 #define ifr_slave ifr_ifru.ifru_slave /* slave device */
194 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
195 #define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
196 #define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */
197 #define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */
198 #define ifr_newname ifr_ifru.ifru_newname /* New name */
199 #define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/
200
201 /*
202 * Structure used in SIOCGIFCONF request.
203 * Used to retrieve interface configuration
204 * for machine (useful for programs which
205 * must know all networks accessible).
206 */
207
208 struct ifconf
209 {
210 int ifc_len; /* size of buffer */
211 union
212 {
213 char __user *ifcu_buf;
214 struct ifreq __user *ifcu_req;
215 } ifc_ifcu;
216 };
217 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
218 #define ifc_req ifc_ifcu.ifcu_req /* array of structures */
219
220 #endif /* _LINUX_IF_H */