2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)if.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/if.h,v 1.58.2.9 2002/08/30 14:23:38 sobomax Exp $
40 #include <sys/cdefs.h>
44 * <net/if.h> does not depend on <sys/time.h> on most other systems. This
45 * helps userland compatibility. (struct timeval ifi_lastchange)
47 #include <sys/socket.h>
54 * Length of interface external name, including terminating '\0'.
55 * Note: this is the same size as a generic device's external name.
57 #define IF_NAMESIZE 16
59 #define IFNAMSIZ IF_NAMESIZE
60 #define IF_MAXUNIT 0x7fff /* if_unit is 15bits */
63 * Structure used to query names of interface cloners.
64 * XXX should be moved to net/if_clone.h
67 int ifcr_total; /* total cloners (out) */
68 int ifcr_count; /* room for this many in user buffer */
69 char *ifcr_buffer; /* buffer for cloner names */
73 * Structure describing information about an interface
74 * which may be of interest to management entities.
77 /* generic interface information */
78 u_char ifi_type; /* ethernet, tokenring, etc */
79 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
80 u_char ifi_addrlen; /* media address length */
81 u_char ifi_hdrlen; /* media header length */
82 u_char ifi_recvquota; /* polling quota for receive intrs */
83 u_char ifi_xmitquota; /* polling quota for xmit intrs */
84 u_long ifi_mtu; /* maximum transmission unit */
85 u_long ifi_metric; /* routing metric (external only) */
86 u_long ifi_link_state; /* current link state */
87 uint64_t ifi_baudrate; /* linespeed */
88 /* volatile statistics */
89 u_long ifi_ipackets; /* packets received on interface */
90 u_long ifi_ierrors; /* input errors on interface */
91 u_long ifi_opackets; /* packets sent on interface */
92 u_long ifi_oerrors; /* output errors on interface */
93 u_long ifi_collisions; /* collisions on csma interfaces */
94 u_long ifi_ibytes; /* total number of octets received */
95 u_long ifi_obytes; /* total number of octets sent */
96 u_long ifi_imcasts; /* packets received via multicast */
97 u_long ifi_omcasts; /* packets sent via multicast */
98 u_long ifi_iqdrops; /* dropped on input, this interface */
99 u_long ifi_noproto; /* destined for unsupported protocol */
100 u_long ifi_hwassist; /* HW offload capabilities */
101 u_long ifi_unused; /* XXX was ifi_xmittiming */
102 struct timeval ifi_lastchange; /* time of last administrative change */
105 #define IFF_UP 0x1 /* interface is up */
106 #define IFF_BROADCAST 0x2 /* broadcast address valid */
107 #define IFF_DEBUG 0x4 /* turn on debugging */
108 #define IFF_LOOPBACK 0x8 /* is a loopback net */
109 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
110 #define IFF_SMART 0x20 /* interface manages own routes */
111 #define IFF_RUNNING 0x40 /* resources allocated */
112 #define IFF_NOARP 0x80 /* no address resolution protocol */
113 #define IFF_PROMISC 0x100 /* receive all packets */
114 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
115 #define IFF_OACTIVE_COMPAT 0x400 /* was transmission in progress */
116 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
117 #define IFF_LINK0 0x1000 /* per link layer defined bit */
118 #define IFF_LINK1 0x2000 /* per link layer defined bit */
119 #define IFF_LINK2 0x4000 /* per link layer defined bit */
120 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
121 #define IFF_MULTICAST 0x8000 /* supports multicast */
122 #define IFF_POLLING_COMPAT 0x10000 /* was interface is in polling mode */
123 #define IFF_PPROMISC 0x20000 /* user-requested promisc mode */
124 #define IFF_MONITOR 0x40000 /* user-requested monitor mode */
125 #define IFF_STATICARP 0x80000 /* static ARP */
126 #define IFF_NPOLLING 0x100000 /* interface is in polling mode */
128 /* flags set internally only: */
129 #define IFF_CANTCHANGE \
130 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE_COMPAT|\
131 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_POLLING_COMPAT|\
138 #define IFF_OACTIVE IFF_OACTIVE_COMPAT
139 #define IFF_POLLING IFF_POLLING_COMPAT
143 * Values for if_link_state.
145 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
146 #define LINK_STATE_DOWN 1 /* link is down */
147 #define LINK_STATE_UP 2 /* link is up */
148 #define LINK_STATE_IS_UP(_s) ((_s) >= LINK_STATE_UP)
151 * Some convenience macros used for setting ifi_baudrate.
152 * XXX 1000 vs. 1024? --thorpej@netbsd.org
154 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */
155 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
156 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
158 /* Capabilities that interfaces can advertise. */
159 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */
160 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */
161 #define IFCAP_NETCONS 0x00004 /* can be a network console */
162 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */
163 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */
164 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU support */
165 #define IFCAP_RSS 0x00040 /* Receive Side Scaling for IPv4 */
166 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */
167 #define IFCAP_TSO4 0x00100 /* can offload TCP segmentation */
168 #define IFCAP_TSO IFCAP_TSO4
169 #define IFCAP_TSO6 0x00200 /* can offload TCP6 segmentation */
171 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
174 #define IFQ_MAXLEN 250
175 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
178 * Message format for use in obtaining information about interfaces
179 * from getkerninfo and the routing socket
182 u_short ifm_msglen; /* to skip over non-understood messages */
183 u_char ifm_version; /* future binary compatibility */
184 u_char ifm_type; /* message type */
185 int ifm_addrs; /* like rtm_addrs */
186 int ifm_flags; /* value of if_flags */
187 u_short ifm_index; /* index for associated ifp */
188 struct if_data ifm_data;/* statistics and other data about if */
192 * Message format for use in obtaining information about interface addresses
193 * from getkerninfo and the routing socket
196 u_short ifam_msglen; /* to skip over non-understood messages */
197 u_char ifam_version; /* future binary compatibility */
198 u_char ifam_type; /* message type */
199 int ifam_addrs; /* like rtm_addrs */
200 int ifam_flags; /* value of ifa_flags */
201 u_short ifam_index; /* index for associated ifp */
202 int ifam_metric; /* value of ifa_metric */
206 * Message format for use in obtaining information about multicast addresses
207 * from the routing socket
210 u_short ifmam_msglen; /* to skip over non-understood messages */
211 u_char ifmam_version; /* future binary compatibility */
212 u_char ifmam_type; /* message type */
213 int ifmam_addrs; /* like rtm_addrs */
214 int ifmam_flags; /* value of ifa_flags */
215 u_short ifmam_index; /* index for associated ifp */
219 * Message format announcing the arrival or departure of a network interface.
221 struct if_announcemsghdr {
222 u_short ifan_msglen; /* to skip over non-understood messages */
223 u_char ifan_version; /* future binary compatibility */
224 u_char ifan_type; /* message type */
225 u_short ifan_index; /* index for associated ifp */
226 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
227 u_short ifan_what; /* what type of announcement */
230 #define IFAN_ARRIVAL 0 /* interface arrival */
231 #define IFAN_DEPARTURE 1 /* interface departure */
234 * Interface request structure used for socket
235 * ioctl's. All interface ioctl's must have parameter
236 * definitions which begin with ifr_name. The
237 * remainder may be interface specific.
240 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
242 struct sockaddr ifru_addr;
243 struct sockaddr ifru_dstaddr;
244 struct sockaddr ifru_broadaddr;
256 #define ifr_addr ifr_ifru.ifru_addr /* address */
257 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
258 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
259 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
260 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
261 #define ifr_metric ifr_ifru.ifru_metric /* metric */
262 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
263 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
264 #define ifr_media ifr_ifru.ifru_media /* physical media */
265 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
266 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
267 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
268 #define ifr_index ifr_ifru.ifru_index /* interface index */
269 #define ifr_pollcpu ifr_ifru.ifru_pollcpu /* deprecated */
270 #define ifr_tsolen ifr_ifru.ifru_tsolen /* max TSO length */
273 #define _SIZEOF_ADDR_IFREQ(ifr) \
274 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
275 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
276 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
279 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
280 struct sockaddr ifra_addr;
281 struct sockaddr ifra_broadaddr;
282 struct sockaddr ifra_mask;
286 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
287 int ifm_current; /* current media options */
288 int ifm_mask; /* don't care mask */
289 int ifm_status; /* media status */
290 int ifm_active; /* active options */
291 int ifm_count; /* # entries in ifm_ulist array */
292 int *ifm_ulist; /* media words */
296 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
297 unsigned long ifd_cmd;
303 * Structure used to retrieve aux status data from interfaces.
304 * Kernel suppliers to this interface should respect the formatting
305 * needed by ifconfig(8): each line starts with a TAB and ends with
306 * a newline. The canonical example to copy and paste is in if_tun.c.
309 #define IFSTATMAX 800 /* 10 lines of text */
311 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
312 char ascii[IFSTATMAX + 1];
316 * Structure used in SIOCGIFCONF request.
317 * Used to retrieve interface configuration
318 * for machine (useful for programs which
319 * must know all networks accessible).
322 int ifc_len; /* size of associated buffer */
325 struct ifreq *ifcu_req;
327 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
328 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
335 #define IFG_ALL "all" /* group contains all interfaces */
336 /* XXX: will we implement this? */
337 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */
341 char ifgrqu_group[IFNAMSIZ];
342 char ifgrqu_member[IFNAMSIZ];
344 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group
345 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member
349 * Used to lookup groups for an interface
352 char ifgr_name[IFNAMSIZ];
355 char ifgru_group[IFNAMSIZ];
356 struct ifg_req *ifgru_groups;
358 #define ifgr_group ifgr_ifgru.ifgru_group
359 #define ifgr_groups ifgr_ifgru.ifgru_groups
363 * Structure for SIOC[AGD]LIFADDR
366 char iflr_name[IFNAMSIZ];
368 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
369 u_int prefixlen; /* in/out */
370 struct sockaddr_storage addr; /* in/out */
371 struct sockaddr_storage dstaddr; /* out */
373 #endif /* __BSD_VISIBLE */
376 struct if_nameindex {
377 unsigned int if_index; /* 1, 2, ... */
378 char *if_name; /* null terminated name: "lnc0", ... */
382 unsigned int if_nametoindex(const char *);
383 char *if_indextoname(unsigned int, char *);
384 struct if_nameindex *if_nameindex(void);
385 void if_freenameindex(struct if_nameindex *);
393 int prison_if(struct ucred *cred, struct sockaddr *sa);
395 /* XXX - this should go away soon. */
396 #include <net/if_var.h>
399 #endif /* !_NET_IF_H_ */