source: trunk/src/emx/include/net/if.h@ 2189

Last change on this file since 2189 was 2189, checked in by bird, 20 years ago

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1/* Modifed for emx by hv 1994,1996
2 * Modified for gcc/os2 by bird 2003
3 *
4 * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: @(#)if.h 7.11 (Berkeley) 3/19/91
36 * $Id: if.h,v 1.7 1994/02/10 17:16:33 mycroft Exp $
37 */
38
39#ifndef _NET_IF_H_
40#define _NET_IF_H_
41
42#include <sys/cdefs.h>
43#ifdef __USE_MISC
44# include <sys/types.h>
45# include <sys/socket.h>
46#endif
47
48#if defined (__cplusplus)
49extern "C" {
50#endif
51
52/* XXX fast fix for SNMP, going away soon */
53#include <sys/time.h>
54
55
56#ifdef TCPV40HDRS
57/*
58 * Structures defining a network interface, providing a packet
59 * transport mechanism (ala level 0 of the PUP protocols).
60 *
61 * Each interface accepts output datagrams of a specified maximum
62 * length, and provides higher level routines with input datagrams
63 * received from its medium.
64 *
65 * Output occurs when the routine if_output is called, with three parameters:
66 * (*ifp->if_output)(ifp, m, dst)
67 * Here m is the mbuf chain to be sent and dst is the destination address.
68 * The output routine encapsulates the supplied datagram if necessary,
69 * and then transmits it on its medium.
70 *
71 * On input, each interface unwraps the data received by it, and either
72 * places it on the input queue of a internetwork datagram routine
73 * and posts the associated software interrupt, or passes the datagram to a raw
74 * packet input routine.
75 *
76 * Routines exist for locating interfaces by their addresses
77 * or for locating a interface on a certain network, as well as more general
78 * routing and gateway routines maintaining information used to locate
79 * interfaces. These routines live in the files if.c and route.c
80 */
81
82/*
83 * Structure defining a queue for a network interface.
84 *
85 * (Would like to call this struct ``if'', but C isn't PL/1.)
86 */
87#pragma pack(1)
88struct mbuf;
89struct ifaddr;
90struct ifnet {
91 char *if_name; /* name, e.g. ``en'' or ``lo'' */
92 short if_unit; /* sub-unit for lower level driver */
93 short if_mtu; /* maximum transmission unit */
94 short if_flags; /* up/down, broadcast, etc. */
95 short if_timer; /* time 'til if_watchdog called */
96 int if_metric; /* routing metric (external only) */
97 struct ifaddr *if_addrlist; /* linked list of addresses per if */
98 struct ifqueue {
99 struct mbuf *ifq_head;
100 struct mbuf *ifq_tail;
101 short ifq_len;
102 short ifq_maxlen;
103 u_short ifq_drops;
104 } if_snd; /* output queue */
105/* procedure handles */
106 int (*if_init)(void); /* IBMSOCKETS */
107 int (*if_output)(void); /* output routine (enqueue) */
108 int (*if_ioctl)(void); /* ioctl routine */
109 int (*if_reset)(void); /* bus reset routine */
110 int (*if_watchdog)(void); /* timer routine */
111/* generic interface statistics */
112 u_short if_ipackets; /* packets received on interface */
113 u_short if_ierrors; /* input errors on interface */
114 u_short if_opackets; /* packets sent on interface */
115 u_short if_oerrors; /* output errors on interface */
116 u_short if_collisions; /* collisions on csma interfaces */
117/* end statistics */
118 struct ifnet *if_next;
119
120#ifdef __OS2__
121/* the following structures are special for OS/2 TCP/IP only */
122 u_char if_adapternum; /* adapter number */
123 u_int if_adaptype;
124 u_int if_broadcast;
125 u_long if_speed;
126
127 /* Interface TCP estimates/controls. Serves the same */
128 /* purpose as the per-route values in BSD-Reno, but I didn't */
129 /* have to touch any of the route manipulation code. */
130 u_short if_rtt; /* Est interface rtt in ms */
131 u_short if_rttvar; /* Est interface rttvar in ms */
132 u_short if_rttmin; /* Fixed interface rttmin in ms */
133 u_short if_sendpipe; /* Send socket buffer/window size */
134 u_short if_recvpipe; /* Recv socket buffer/window size */
135 u_short if_ssthresh; /* Gateway buffer limit (slow strt) */
136 u_long if_eflags; /* Extended Flags */
137 struct ifqueue if_traceq; /* packet trace queue */
138 u_short if_segsize; /* segment size for interface*/
139 u_short if_use576; /* use 576 or 1460 as def. mss if going thru a router */
140 /* Token Ring IP multicast flag */
141 u_short if_rfc1469; /* using broadcast or functional address */
142 /* for IP Mulitcast */
143#define IF_RTTSCALE 1000
144#endif /* __OS2__ */
145};
146#pragma pack()
147#endif /*TCPV40HDRS*/
148
149#ifndef IFMIB_ENTRIES
150#define IFMIB_ENTRIES 42
151#endif
152
153#ifdef TCPV40HDRS
154#pragma pack(1)
155struct ifmib {
156 short ifNumber; /* number of network interfaces */
157 struct iftable {
158 short ifIndex; /* index of this interface */
159 char ifDescr[45]; /* description */
160 short ifType; /* type of the interface */
161 short ifMtu; /* MTU of the interface */
162 char ifPhysAddr[6]; /* MTU of the interface */
163 short ifOperStatus;
164 u_long ifSpeed;
165 u_long ifLastChange;
166 u_long ifInOctets;
167 u_long ifOutOctets;
168 u_long ifOutDiscards;
169 u_long ifInDiscards;
170 u_long ifInErrors;
171 u_long ifOutErrors;
172 u_long ifInUnknownProtos;
173 u_long ifInUcastPkts;
174 u_long ifOutUcastPkts;
175 u_long ifInNUcastPkts;
176 u_long ifOutNUcastPkts;
177 } iftable[IFMIB_ENTRIES];
178};
179#pragma pack()
180
181#else /*TCPV40HDRS*/
182
183#pragma pack(1) /* force on doubleword boundary */
184struct iftable {
185 short iftIndex; /* index of this interface */
186 char iftDescr[45]; /* description */
187 short iftType; /* type of the interface */
188 short iftMtu; /* MTU of the interface */
189 char iftPhysAddr[6]; /* MTU of the interface */
190 short iftOperStatus;
191 u_long iftSpeed;
192 u_long iftLastChange;
193 u_long iftInOctets;
194 u_long iftOutOctets;
195 u_long iftOutDiscards;
196 u_long iftInDiscards;
197 u_long iftInErrors;
198 u_long iftOutErrors;
199 u_long iftInUnknownProtos;
200 u_long iftInUcastPkts;
201 u_long iftOutUcastPkts;
202 u_long iftInNUcastPkts;
203 u_long iftOutNUcastPkts;
204};
205struct ifmib {
206 short ifNumber;
207 struct iftable iftable[IFMIB_ENTRIES];
208};
209#pragma pack() /* reset to default packing */
210
211#define IFC_ALLRTSBCAST 0x0001
212#define IFC_802_3 0x0002
213#define IFC_FDDI 0x0004
214#define IFC_NOREDIR 0x0010
215
216#define OPERSTATUS_UP 0x1
217#define OPERSTATUS_DOWN 0x2
218#define OPERSTATUS_TESTING 0x3
219#endif /*TCPV40HDRS*/
220
221#define IFF_UP 0x1 /* interface is up */
222#define IFF_BROADCAST 0x2 /* broadcast address valid */
223#define IFF_DEBUG 0x4 /* turn on debugging */
224#define IFF_LOOPBACK 0x8 /* is a loopback net */
225#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
226#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
227#ifndef TCPV40HDRS
228#define IFF_LINK2 IFF_NOTRAILERS /* was trailers, not used */
229#endif
230#define IFF_RUNNING 0x40 /* resources allocated */
231#define IFF_NOARP 0x80 /* no address resolution protocol */
232#define IFF_PROMISC 0x100 /* receive all packets */
233#define IFF_ALLMULTI 0x200 /* receive all multicast packets */
234#define IFF_DEFMTU 0x400 /* default mtu of 1500 */
235#define IFF_MULTICAST 0x800 /* supports multicast */
236/*
237 * The IFF_MULTICAST flag indicates that the network can support the
238 * transmission and reception of higher-level (e.g., IP) multicast packets.
239 * It is independent of hardware support for multicasting; for example,
240 * point-to-point links or pure broadcast networks may well support
241 * higher-level multicasts.
242 */
243#define IFF_BRIDGE 0x1000 /* support token ring routine field */
244#define IFF_SNAP 0x2000 /* support extended SAP header */
245#define IFF_ETHER 0x4000 /* ethernet interface */
246#define IFF_LOOPBRD 0x8000 /* ethernet interface */
247#ifndef TCPV40HDRS
248#define IFF_SIMPLEX 0x10000 /* can't hear own transmissions */
249#define IFF_OACTIVE 0x20000 /* transmission in progress */
250#define IFF_802_3 0x40000 /* */
251#define IFF_CANONICAL 0x80000 /* */
252#define IFF_RUNNINGBLK 0x100000 /* threads waited for intf running */
253#endif
254
255#define IFF_RFC1469_BC 1 /* using broadcast */
256#define IFF_RFC1469_FA 2 /* using functional address */
257#define IFF_RFC1469_MA 3 /* using mulitcast address */
258
259/*hv: flags set internally only */
260#ifdef TCPV40HDRS
261#define IFF_CANTCHANGE (IFF_BROADCAST | IFF_POINTOPOINT | IFF_RUNNING)
262#else
263#define IFF_CANTCHANGE \
264 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE| \
265 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
266#endif
267
268/* packet tracing extension */
269#define IFFE_PKTTRACE 0x00000001 /* trace datalink where possible */
270#define IFFE_IPTRACE 0x00000002 /* trace ONLY IP packets */
271
272#ifndef TCPV40HDRS
273#pragma pack(1)
274#endif
275struct pkt_trace_hdr {
276 u_short pt_htype; /* header type */
277 u_short pt_len; /* in: pt_buf len, out: packet len */
278 caddr_t pt_data; /* packet ATTN: This is a _Seg16 addr! */
279 u_long pt_tstamp; /* time stamp in milliseconds */
280};
281#ifndef TCPV40HDRS
282#pragma pack()
283#endif
284#define HT_IP 0x01 /* IP */
285#define HT_ETHER 0x06 /* Ethernet */
286#define HT_ISO88023 0x07 /* CSMA CD */
287#define HT_ISO88025 0x09 /* Token Ring */
288#define HT_SLIP 0x1c /* Serial Line IP */
289#define HT_PPP 0x18 /* PPP IP */
290
291#ifndef TCPV40HDRS
292/* genric interface information */
293#pragma pack(1)
294struct if_data {
295 u_char ifi_type; /* ethernet, tokenring, etc */
296 u_char ifi_addrlen; /* media address length */
297 u_char ifi_hdrlen; /* media header length */
298 u_long ifi_mtu; /* maximum transmission unit */
299 u_long ifi_metric; /* routing metric (external only) */
300 u_long ifi_baudrate; /* linespeed */
301 /* volatile statistics */
302 u_long ifi_collisions; /* collisions on csma interfaces */
303 u_long ifi_ibytes; /* total number of octets received */
304 u_long ifi_obytes; /* total number of octets sent */
305 u_long ifi_oqdrops; /* dropped on output, this interface */
306 u_long ifi_iqdrops; /* dropped on input, this interface */
307 u_long ifi_ierrors; /* input errors on interface */
308 u_long ifi_oerrors; /* output errors on interface */
309 u_long ifi_noproto; /* destined for unsupported protocol */
310 u_long ifi_ipackets; /* packets received on interface */
311 u_long ifi_opackets; /* packets sent on interface */
312 u_long ifi_imcasts; /* packets received via multicast */
313 u_long ifi_omcasts; /* packets sent via multicast */
314 short ifi_OperStatus; /* SNMP Oper Status */
315 struct timeval ifi_lastchange;/* last updated */
316 u_char ifi_descr[45]; /* description of the interface */
317};
318#pragma pack()
319
320/*
321 * Message format for use in obtaining information about interfaces
322 * from getkerninfo and the routing socket
323 */
324#pragma pack(1)
325struct if_msghdr {
326 u_short ifm_msglen; /* to skip over non-understood messages */
327 u_char ifm_version; /* future binary compatability */
328 u_char ifm_type; /* message type */
329 int ifm_addrs; /* like rtm_addrs */
330 int ifm_flags; /* value of if_flags */
331 u_short ifm_index; /* index for associated ifp */
332 struct if_data ifm_data;/* statistics and other data about if */
333};
334#pragma pack()
335
336/*
337 * Message format for use in obtaining information about interface addresses
338 * from getkerninfo and the routing socket
339 */
340#pragma pack(1)
341struct ifa_msghdr {
342 u_short ifam_msglen; /* to skip over non-understood messages */
343 u_char ifam_version; /* future binary compatability */
344 u_char ifam_type; /* message type */
345 int ifam_addrs; /* like rtm_addrs */
346 int ifam_flags; /* value of ifa_flags */
347 u_short ifam_index; /* index for associated ifp */
348 int ifam_metric; /* value of ifa_metric */
349};
350#pragma pack()
351#endif /*!TCPV40HDRS*/
352
353#ifdef TCPV40HDRS
354/*
355 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
356 * input routines have queues of messages stored on ifqueue structures
357 * (defined above). Entries are added to and deleted from these structures
358 * by these macros, which should be called with ipl raised to splimp().
359 */
360#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
361#define IF_DROP(ifq) ((ifq)->ifq_drops++)
362#define IF_ENQUEUE(ifq, m) {\
363 (m)->m_act=0;\
364 if ((ifq)->ifq_tail==0)\
365 (ifq)->ifq_head=m;\
366 else\
367 (ifq)->ifq_tail->m_act=m;\
368 (ifq)->ifq_tail=m;\
369 (ifq)->ifq_len++;\
370}
371#define IF_PREPEND(ifq, m) {\
372 (m)->m_act=(ifq)->ifq_head;\
373 if ((ifq)->ifq_tail==0)\
374 (ifq)->ifq_tail=(m);\
375 (ifq)->ifq_head=(m);\
376 (ifq)->ifq_len++;\
377}
378/*
379 * Packets destined for level-1 protocol input routines
380 * have a pointer to the receiving interface prepended to the data.
381 * IF_DEQUEUEIF extracts and returns this pointer when dequeueing the packet.
382 * IF_ADJ should be used otherwise to adjust for its presence.
383 */
384#define IF_ADJ(m) {\
385 (m)->m_off+=sizeof(struct ifnet*);\
386 (m)->m_len-=sizeof(struct ifnet*);\
387 if ((m)->m_len==0) {\
388 struct mbuf *n;\
389 MFREE((m), n);\
390 (m) = n;\
391 }\
392}
393#define IF_DEQUEUEIF(ifq, m, ifp) {\
394 (m)=(ifq)->ifq_head;\
395 if (m) {\
396 if (((ifq)->ifq_head=(m)->m_act)==0)\
397 (ifq)->ifq_tail=0;\
398 (m)->m_act=0;\
399 (ifq)->ifq_len--;\
400 (ifp)=*(mtod((m), struct ifnet**));\
401 IF_ADJ(m);\
402 }\
403}
404#define IF_DEQUEUE(ifq, m) {\
405 (m)=(ifq)->ifq_head;\
406 if (m) {\
407 if (((ifq)->ifq_head=(m)->m_act)==0)\
408 (ifq)->ifq_tail=0;\
409 (m)->m_act=0;\
410 (ifq)->ifq_len--;\
411 }\
412}
413
414#define IFQ_MAXLEN 50
415#define IFNET_SLOWHZ 1 /* granularity is 1 second */
416
417/*
418 * The ifaddr structure contains information about one address
419 * of an interface. They are maintained by the different address families,
420 * are allocated and attached when an address is set, and are linked
421 * together so all addresses for an interface can be located.
422 */
423struct ifaddr {
424 struct sockaddr ifa_addr; /* address of interface */
425 union {
426 struct sockaddr ifu_broadaddr; /* broadcast address interface */
427 struct sockaddr ifu_dstaddr; /* other end of p-to-p link */
428 } ifa_ifu;
429#define ifa_broadaddr ifa_ifu.ifu_broadaddr
430#define ifa_dstaddr ifa_ifu.ifu_dstaddr
431 struct ifnet *ifa_ifp; /* back-pointer to interface */
432 struct ifaddr *ifa_next; /* next address for interface */
433};
434#endif /*TCPV40HDRS*/
435
436/*
437 * Interface request structure used for socket
438 * ioctl's. All interface ioctl's must have parameter
439 * definitions which begin with ifr_name. The
440 * remainder may be interface specific.
441 */
442#ifndef TCPV40HDRS
443#pragma pack(1)
444#endif
445struct ifreq {
446#define IFNAMSIZ 16
447 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
448 union {
449 struct sockaddr ifru_addr;
450 struct sockaddr ifru_dstaddr;
451 struct sockaddr ifru_broadaddr;
452 short ifru_flags;
453 int ifru_metric;
454 caddr_t ifru_data;
455 } ifr_ifru;
456#define ifr_addr ifr_ifru.ifru_addr /* address */
457#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
458#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
459#define ifr_flags ifr_ifru.ifru_flags /* flags */
460#define ifr_metric ifr_ifru.ifru_metric /* metric */
461#define ifr_data ifr_ifru.ifru_data /* for use by interface */
462#ifndef TCPV40HDRS
463#define ifr_eflags ifr_ifru.ifru_data /* Extended flags */
464#endif
465};
466#ifndef TCPV40HDRS
467#pragma pack()
468#endif
469
470#ifndef TCPV40HDRS
471#pragma pack(1)
472struct ifaliasreq {
473 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
474 struct sockaddr ifra_addr;
475 struct sockaddr ifra_broadaddr;
476 struct sockaddr ifra_mask;
477};
478#pragma pack()
479#endif
480
481/*
482 * Structure used in SIOCGIFCONF request.
483 * Used to retrieve interface configuration
484 * for machine (useful for programs which
485 * must know all networks accessible).
486 */
487#ifndef TCPV40HDRS
488#pragma pack(1) /* paranoia I believe */
489#endif
490struct ifconf {
491 int ifc_len; /* size of associated buffer */
492 union {
493 caddr_t ifcu_buf;
494 struct ifreq *ifcu_req;
495 } ifc_ifcu;
496#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
497#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
498};
499#ifndef TCPV40HDRS
500#pragma pack()
501#endif
502
503#include <net/if_arp.h>
504
505#if defined (__cplusplus)
506}
507#endif
508
509#ifndef TCPV40HDRS
510#include <netinet/in.h>
511
512#pragma pack(1)
513struct in_aliasreq {
514 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
515 struct sockaddr_in ifra_addr;
516 struct sockaddr_in ifra_broadaddr;
517#define ifra_dstaddr ifra_broadaddr
518 struct sockaddr_in ifra_mask;
519};
520#pragma pack()
521
522#pragma pack(1)
523struct addrreq { /* get multicast addresses */
524 char ifr_name[IFNAMSIZ];
525 struct sockaddr ifr_addrs;
526 u_long maddr[MAX_IN_MULTI];
527};
528#pragma pack()
529
530#pragma pack(1)
531struct statatreq {
532 u_long addr;
533 short interface;
534 u_long mask;
535 u_long broadcast;
536};
537#pragma pack()
538
539#endif /*!TCPV40HDRS*/
540
541/* PPP statistics table. Moved here from previous ifstat.h */
542struct ifstat {
543 u_long iftLastChange;
544 u_long iftInOctets;
545 u_long iftOutOctets;
546 u_long iftOutDiscards;
547 u_long iftInDiscards;
548 u_long iftInErrors;
549 u_long iftOutErrors;
550 u_long iftInUnknownProtos;
551 u_long iftInUcastPkts;
552 u_long iftOutUcastPkts;
553 u_long iftInNUcastPkts;
554 u_long iftOutNUcastPkts;
555};
556
557#endif /* _NET_IF_H_ */
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