3
4/*
5 * Copyright (c) 1994, 1995 Ignatios Souvatzis
6 * Copyright (c) 1982, 1989, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * from: NetBSD: if_ethersubr.c,v 1.9 1994/06/29 06:36:11 cgd Exp
38 * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
39 *
40 */
41#include "opt_inet.h"
42#include "opt_inet6.h"
43#include "opt_ipx.h"
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/kernel.h>
48#include <sys/malloc.h>
49#include <sys/mbuf.h>
50#include <sys/protosw.h>
51#include <sys/socket.h>
52#include <sys/sockio.h>
53#include <sys/errno.h>
54#include <sys/syslog.h>
55
56#include <machine/cpu.h>
57
58#include <net/if.h>
59#include <net/netisr.h>
60#include <net/route.h>
61#include <net/if_dl.h>
62#include <net/if_types.h>
63#include <net/if_arc.h>
64#include <net/if_arp.h>
65#include <net/bpf.h>
66
67#if defined(INET) || defined(INET6)
68#include <netinet/in.h>
69#include <netinet/in_var.h>
70#include <netinet/if_ether.h>
71#endif
72
73#ifdef INET6
74#include <netinet6/nd6.h>
75#endif
76
77#ifdef IPX
78#include <netipx/ipx.h>
79#include <netipx/ipx_if.h>
80#endif
81
82MODULE_VERSION(arcnet, 1);
83
84#define ARCNET_ALLOW_BROKEN_ARP
85
86static struct mbuf *arc_defrag(struct ifnet *, struct mbuf *);
87static int arc_resolvemulti(struct ifnet *, struct sockaddr **,
88 struct sockaddr *);
89
90u_int8_t arcbroadcastaddr = 0;
91
92#define ARC_LLADDR(ifp) (*(u_int8_t *)IF_LLADDR(ifp))
93
94#define senderr(e) { error = (e); goto bad;}
95#define SIN(s) ((struct sockaddr_in *)s)
96#define SIPX(s) ((struct sockaddr_ipx *)s)
97
98/*
99 * ARCnet output routine.
100 * Encapsulate a packet of type family for the local net.
101 * Assumes that ifp is actually pointer to arccom structure.
102 */
103int
104arc_output(ifp, m, dst, rt0)
105 struct ifnet *ifp;
106 struct mbuf *m;
107 struct sockaddr *dst;
108 struct rtentry *rt0;
109{
110 struct rtentry *rt;
111 struct arccom *ac;
112 struct arc_header *ah;
113 int error;
114 u_int8_t atype, adst;
115 int loop_copy = 0;
116 int isphds;
117
118 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
119 return(ENETDOWN); /* m, m1 aren't initialized yet */
120
121 error = 0;
122 ac = (struct arccom *)ifp;
123
124 error = rt_check(&rt, &rt0, dst);
125 if (error)
126 goto bad;
127
128 switch (dst->sa_family) {
129#ifdef INET
130 case AF_INET:
131
132 /*
133 * For now, use the simple IP addr -> ARCnet addr mapping
134 */
135 if (m->m_flags & (M_BCAST|M_MCAST))
136 adst = arcbroadcastaddr; /* ARCnet broadcast address */
137 else if (ifp->if_flags & IFF_NOARP)
138 adst = ntohl(SIN(dst)->sin_addr.s_addr) & 0xFF;
139 else if (!arpresolve(ifp, rt, m, dst, &adst, rt0))
140 return 0; /* not resolved yet */
141
142 atype = (ifp->if_flags & IFF_LINK0) ?
143 ARCTYPE_IP_OLD : ARCTYPE_IP;
144 break;
145#endif
146#ifdef INET6
147 case AF_INET6:
148#ifdef OLDIP6OUTPUT
149 if (!nd6_resolve(ifp, rt, m, dst, (u_char *)&adst))
150 return(0); /* if not yet resolves */
151#else
152 if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)&adst))
153 return(0); /* it must be impossible, but... */
154#endif /* OLDIP6OUTPUT */
155 atype = ARCTYPE_INET6;
156 break;
157#endif
158#ifdef IPX
159 case AF_IPX:
160 adst = SIPX(dst)->sipx_addr.x_host.c_host[5];
161 atype = ARCTYPE_IPX;
162 if (adst == 0xff)
163 adst = arcbroadcastaddr;
164 break;
165#endif
166
167 case AF_UNSPEC:
168 loop_copy = -1;
169 ah = (struct arc_header *)dst->sa_data;
170 adst = ah->arc_dhost;
171 atype = ah->arc_type;
172
173 if (atype == ARCTYPE_ARP) {
174 atype = (ifp->if_flags & IFF_LINK0) ?
175 ARCTYPE_ARP_OLD: ARCTYPE_ARP;
176
177#ifdef ARCNET_ALLOW_BROKEN_ARP
178 /*
179 * XXX It's not clear per RFC826 if this is needed, but
180 * "assigned numbers" say this is wrong.
181 * However, e.g., AmiTCP 3.0Beta used it... we make this
182 * switchable for emergency cases. Not perfect, but...
183 */
184 if (ifp->if_flags & IFF_LINK2)
185 mtod(m, struct arphdr *)->ar_pro = atype - 1;
186#endif
187 }
188 break;
189
190 default:
191 if_printf(ifp, "can't handle af%d\n", dst->sa_family);
192 senderr(EAFNOSUPPORT);
193 }
194
195 isphds = arc_isphds(atype);
196 M_PREPEND(m, isphds ? ARC_HDRNEWLEN : ARC_HDRLEN, M_DONTWAIT);
197 if (m == 0)
198 senderr(ENOBUFS);
199 ah = mtod(m, struct arc_header *);
200 ah->arc_type = atype;
201 ah->arc_dhost = adst;
202 ah->arc_shost = ARC_LLADDR(ifp);
203 if (isphds) {
204 ah->arc_flag = 0;
205 ah->arc_seqid = 0;
206 }
207
208 if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) {
209 if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
210 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
211
212 (void) if_simloop(ifp, n, dst->sa_family, ARC_HDRLEN);
213 } else if (ah->arc_dhost == ah->arc_shost) {
214 (void) if_simloop(ifp, m, dst->sa_family, ARC_HDRLEN);
215 return (0); /* XXX */
216 }
217 }
218
219 BPF_MTAP(ifp, m);
220
221 if (!IF_HANDOFF(&ifp->if_snd, m, ifp)) {
222 m = 0;
223 senderr(ENOBUFS);
224 }
225
226 return (error);
227
228bad:
229 if (m)
230 m_freem(m);
231 return (error);
232}
233
234void
235arc_frag_init(ifp)
236 struct ifnet *ifp;
237{
238 struct arccom *ac;
239
240 ac = (struct arccom *)ifp;
241 ac->curr_frag = 0;
242}
243
244struct mbuf *
245arc_frag_next(ifp)
246 struct ifnet *ifp;
247{
248 struct arccom *ac;
249 struct mbuf *m;
250 struct arc_header *ah;
251
252 ac = (struct arccom *)ifp;
253 if ((m = ac->curr_frag) == 0) {
254 int tfrags;
255
256 /* dequeue new packet */
257 IF_DEQUEUE(&ifp->if_snd, m);
258 if (m == 0)
259 return 0;
260
261 ah = mtod(m, struct arc_header *);
262 if (!arc_isphds(ah->arc_type))
263 return m;
264
265 ++ac->ac_seqid; /* make the seqid unique */
266 tfrags = (m->m_pkthdr.len + ARC_MAX_DATA - 1) / ARC_MAX_DATA;
267 ac->fsflag = 2 * tfrags - 3;
268 ac->sflag = 0;
269 ac->rsflag = ac->fsflag;
270 ac->arc_dhost = ah->arc_dhost;
271 ac->arc_shost = ah->arc_shost;
272 ac->arc_type = ah->arc_type;
273
274 m_adj(m, ARC_HDRNEWLEN);
275 ac->curr_frag = m;
276 }
277
278 /* split out next fragment and return it */
279 if (ac->sflag < ac->fsflag) {
280 /* we CAN'T have short packets here */
281 ac->curr_frag = m_split(m, ARC_MAX_DATA, M_DONTWAIT);
282 if (ac->curr_frag == 0) {
283 m_freem(m);
284 return 0;
285 }
286
287 M_PREPEND(m, ARC_HDRNEWLEN, M_DONTWAIT);
288 if (m == 0) {
289 m_freem(ac->curr_frag);
290 ac->curr_frag = 0;
291 return 0;
292 }
293
294 ah = mtod(m, struct arc_header *);
295 ah->arc_flag = ac->rsflag;
296 ah->arc_seqid = ac->ac_seqid;
297
298 ac->sflag += 2;
299 ac->rsflag = ac->sflag;
300 } else if ((m->m_pkthdr.len >=
301 ARC_MIN_FORBID_LEN - ARC_HDRNEWLEN + 2) &&
302 (m->m_pkthdr.len <=
303 ARC_MAX_FORBID_LEN - ARC_HDRNEWLEN + 2)) {
304 ac->curr_frag = 0;
305
306 M_PREPEND(m, ARC_HDRNEWLEN_EXC, M_DONTWAIT);
307 if (m == 0)
308 return 0;
309
310 ah = mtod(m, struct arc_header *);
311 ah->arc_flag = 0xFF;
312 ah->arc_seqid = 0xFFFF;
313 ah->arc_type2 = ac->arc_type;
314 ah->arc_flag2 = ac->sflag;
315 ah->arc_seqid2 = ac->ac_seqid;
316 } else {
317 ac->curr_frag = 0;
318
319 M_PREPEND(m, ARC_HDRNEWLEN, M_DONTWAIT);
320 if (m == 0)
321 return 0;
322
323 ah = mtod(m, struct arc_header *);
324 ah->arc_flag = ac->sflag;
325 ah->arc_seqid = ac->ac_seqid;
326 }
327
328 ah->arc_dhost = ac->arc_dhost;
329 ah->arc_shost = ac->arc_shost;
330 ah->arc_type = ac->arc_type;
331
332 return m;
333}
334
335/*
336 * Defragmenter. Returns mbuf if last packet found, else
337 * NULL. frees imcoming mbuf as necessary.
338 */
339
340static __inline struct mbuf *
341arc_defrag(ifp, m)
342 struct ifnet *ifp;
343 struct mbuf *m;
344{
345 struct arc_header *ah, *ah1;
346 struct arccom *ac;
347 struct ac_frag *af;
348 struct mbuf *m1;
349 char *s;
350 int newflen;
351 u_char src,dst,typ;
352
353 ac = (struct arccom *)ifp;
354
355 if (m->m_len < ARC_HDRNEWLEN) {
356 m = m_pullup(m, ARC_HDRNEWLEN);
357 if (m == NULL) {
358 ++ifp->if_ierrors;
359 return NULL;
360 }
361 }
362
363 ah = mtod(m, struct arc_header *);
364 typ = ah->arc_type;
365
366 if (!arc_isphds(typ))
367 return m;
368
369 src = ah->arc_shost;
370 dst = ah->arc_dhost;
371
372 if (ah->arc_flag == 0xff) {
373 m_adj(m, 4);
374
375 if (m->m_len < ARC_HDRNEWLEN) {
376 m = m_pullup(m, ARC_HDRNEWLEN);
377 if (m == NULL) {
378 ++ifp->if_ierrors;
379 return NULL;
380 }
381 }
382
383 ah = mtod(m, struct arc_header *);
384 }
385
386 af = &ac->ac_fragtab[src];
387 m1 = af->af_packet;
388 s = "debug code error";
389
390 if (ah->arc_flag & 1) {
391 /*
392 * first fragment. We always initialize, which is
393 * about the right thing to do, as we only want to
394 * accept one fragmented packet per src at a time.
395 */
396 if (m1 != NULL)
397 m_freem(m1);
398
399 af->af_packet = m;
400 m1 = m;
401 af->af_maxflag = ah->arc_flag;
402 af->af_lastseen = 0;
403 af->af_seqid = ah->arc_seqid;
404
405 return NULL;
406 /* notreached */
407 } else {
408 /* check for unfragmented packet */
409 if (ah->arc_flag == 0)
410 return m;
411
412 /* do we have a first packet from that src? */
413 if (m1 == NULL) {
414 s = "no first frag";
415 goto outofseq;
416 }
417
418 ah1 = mtod(m1, struct arc_header *);
419
420 if (ah->arc_seqid != ah1->arc_seqid) {
421 s = "seqid differs";
422 goto outofseq;
423 }
424
425 if (typ != ah1->arc_type) {
426 s = "type differs";
427 goto outofseq;
428 }
429
430 if (dst != ah1->arc_dhost) {
431 s = "dest host differs";
432 goto outofseq;
433 }
434
435 /* typ, seqid and dst are ok here. */
436
437 if (ah->arc_flag == af->af_lastseen) {
438 m_freem(m);
439 return NULL;
440 }
441
442 if (ah->arc_flag == af->af_lastseen + 2) {
443 /* ok, this is next fragment */
444 af->af_lastseen = ah->arc_flag;
445 m_adj(m,ARC_HDRNEWLEN);
446
447 /*
448 * m_cat might free the first mbuf (with pkthdr)
449 * in 2nd chain; therefore:
450 */
451
452 newflen = m->m_pkthdr.len;
453
454 m_cat(m1,m);
455
456 m1->m_pkthdr.len += newflen;
457
458 /* is it the last one? */
459 if (af->af_lastseen > af->af_maxflag) {
460 af->af_packet = NULL;
461 return(m1);
462 } else
463 return NULL;
464 }
465 s = "other reason";
466 /* if all else fails, it is out of sequence, too */
467 }
468outofseq:
469 if (m1) {
470 m_freem(m1);
471 af->af_packet = NULL;
472 }
473
474 if (m)
475 m_freem(m);
476
477 log(LOG_INFO,"%s%d: got out of seq. packet: %s\n",
478 ifp->if_name, ifp->if_unit, s);
479
480 return NULL;
481}
482
483/*
484 * return 1 if Packet Header Definition Standard, else 0.
485 * For now: old IP, old ARP aren't obviously. Lacking correct information,
486 * we guess that besides new IP and new ARP also IPX and APPLETALK are PHDS.
487 * (Apple and Novell corporations were involved, among others, in PHDS work).
488 * Easiest is to assume that everybody else uses that, too.
489 */
490int
491arc_isphds(type)
492 u_int8_t type;
493{
494 return (type != ARCTYPE_IP_OLD &&
495 type != ARCTYPE_ARP_OLD &&
496 type != ARCTYPE_DIAGNOSE);
497}
498
499/*
500 * Process a received Arcnet packet;
501 * the packet is in the mbuf chain m with
502 * the ARCnet header.
503 */
504void
505arc_input(ifp, m)
506 struct ifnet *ifp;
507 struct mbuf *m;
508{
509 struct arc_header *ah;
| 3
4/*
5 * Copyright (c) 1994, 1995 Ignatios Souvatzis
6 * Copyright (c) 1982, 1989, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * from: NetBSD: if_ethersubr.c,v 1.9 1994/06/29 06:36:11 cgd Exp
38 * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
39 *
40 */
41#include "opt_inet.h"
42#include "opt_inet6.h"
43#include "opt_ipx.h"
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/kernel.h>
48#include <sys/malloc.h>
49#include <sys/mbuf.h>
50#include <sys/protosw.h>
51#include <sys/socket.h>
52#include <sys/sockio.h>
53#include <sys/errno.h>
54#include <sys/syslog.h>
55
56#include <machine/cpu.h>
57
58#include <net/if.h>
59#include <net/netisr.h>
60#include <net/route.h>
61#include <net/if_dl.h>
62#include <net/if_types.h>
63#include <net/if_arc.h>
64#include <net/if_arp.h>
65#include <net/bpf.h>
66
67#if defined(INET) || defined(INET6)
68#include <netinet/in.h>
69#include <netinet/in_var.h>
70#include <netinet/if_ether.h>
71#endif
72
73#ifdef INET6
74#include <netinet6/nd6.h>
75#endif
76
77#ifdef IPX
78#include <netipx/ipx.h>
79#include <netipx/ipx_if.h>
80#endif
81
82MODULE_VERSION(arcnet, 1);
83
84#define ARCNET_ALLOW_BROKEN_ARP
85
86static struct mbuf *arc_defrag(struct ifnet *, struct mbuf *);
87static int arc_resolvemulti(struct ifnet *, struct sockaddr **,
88 struct sockaddr *);
89
90u_int8_t arcbroadcastaddr = 0;
91
92#define ARC_LLADDR(ifp) (*(u_int8_t *)IF_LLADDR(ifp))
93
94#define senderr(e) { error = (e); goto bad;}
95#define SIN(s) ((struct sockaddr_in *)s)
96#define SIPX(s) ((struct sockaddr_ipx *)s)
97
98/*
99 * ARCnet output routine.
100 * Encapsulate a packet of type family for the local net.
101 * Assumes that ifp is actually pointer to arccom structure.
102 */
103int
104arc_output(ifp, m, dst, rt0)
105 struct ifnet *ifp;
106 struct mbuf *m;
107 struct sockaddr *dst;
108 struct rtentry *rt0;
109{
110 struct rtentry *rt;
111 struct arccom *ac;
112 struct arc_header *ah;
113 int error;
114 u_int8_t atype, adst;
115 int loop_copy = 0;
116 int isphds;
117
118 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
119 return(ENETDOWN); /* m, m1 aren't initialized yet */
120
121 error = 0;
122 ac = (struct arccom *)ifp;
123
124 error = rt_check(&rt, &rt0, dst);
125 if (error)
126 goto bad;
127
128 switch (dst->sa_family) {
129#ifdef INET
130 case AF_INET:
131
132 /*
133 * For now, use the simple IP addr -> ARCnet addr mapping
134 */
135 if (m->m_flags & (M_BCAST|M_MCAST))
136 adst = arcbroadcastaddr; /* ARCnet broadcast address */
137 else if (ifp->if_flags & IFF_NOARP)
138 adst = ntohl(SIN(dst)->sin_addr.s_addr) & 0xFF;
139 else if (!arpresolve(ifp, rt, m, dst, &adst, rt0))
140 return 0; /* not resolved yet */
141
142 atype = (ifp->if_flags & IFF_LINK0) ?
143 ARCTYPE_IP_OLD : ARCTYPE_IP;
144 break;
145#endif
146#ifdef INET6
147 case AF_INET6:
148#ifdef OLDIP6OUTPUT
149 if (!nd6_resolve(ifp, rt, m, dst, (u_char *)&adst))
150 return(0); /* if not yet resolves */
151#else
152 if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)&adst))
153 return(0); /* it must be impossible, but... */
154#endif /* OLDIP6OUTPUT */
155 atype = ARCTYPE_INET6;
156 break;
157#endif
158#ifdef IPX
159 case AF_IPX:
160 adst = SIPX(dst)->sipx_addr.x_host.c_host[5];
161 atype = ARCTYPE_IPX;
162 if (adst == 0xff)
163 adst = arcbroadcastaddr;
164 break;
165#endif
166
167 case AF_UNSPEC:
168 loop_copy = -1;
169 ah = (struct arc_header *)dst->sa_data;
170 adst = ah->arc_dhost;
171 atype = ah->arc_type;
172
173 if (atype == ARCTYPE_ARP) {
174 atype = (ifp->if_flags & IFF_LINK0) ?
175 ARCTYPE_ARP_OLD: ARCTYPE_ARP;
176
177#ifdef ARCNET_ALLOW_BROKEN_ARP
178 /*
179 * XXX It's not clear per RFC826 if this is needed, but
180 * "assigned numbers" say this is wrong.
181 * However, e.g., AmiTCP 3.0Beta used it... we make this
182 * switchable for emergency cases. Not perfect, but...
183 */
184 if (ifp->if_flags & IFF_LINK2)
185 mtod(m, struct arphdr *)->ar_pro = atype - 1;
186#endif
187 }
188 break;
189
190 default:
191 if_printf(ifp, "can't handle af%d\n", dst->sa_family);
192 senderr(EAFNOSUPPORT);
193 }
194
195 isphds = arc_isphds(atype);
196 M_PREPEND(m, isphds ? ARC_HDRNEWLEN : ARC_HDRLEN, M_DONTWAIT);
197 if (m == 0)
198 senderr(ENOBUFS);
199 ah = mtod(m, struct arc_header *);
200 ah->arc_type = atype;
201 ah->arc_dhost = adst;
202 ah->arc_shost = ARC_LLADDR(ifp);
203 if (isphds) {
204 ah->arc_flag = 0;
205 ah->arc_seqid = 0;
206 }
207
208 if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) {
209 if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
210 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
211
212 (void) if_simloop(ifp, n, dst->sa_family, ARC_HDRLEN);
213 } else if (ah->arc_dhost == ah->arc_shost) {
214 (void) if_simloop(ifp, m, dst->sa_family, ARC_HDRLEN);
215 return (0); /* XXX */
216 }
217 }
218
219 BPF_MTAP(ifp, m);
220
221 if (!IF_HANDOFF(&ifp->if_snd, m, ifp)) {
222 m = 0;
223 senderr(ENOBUFS);
224 }
225
226 return (error);
227
228bad:
229 if (m)
230 m_freem(m);
231 return (error);
232}
233
234void
235arc_frag_init(ifp)
236 struct ifnet *ifp;
237{
238 struct arccom *ac;
239
240 ac = (struct arccom *)ifp;
241 ac->curr_frag = 0;
242}
243
244struct mbuf *
245arc_frag_next(ifp)
246 struct ifnet *ifp;
247{
248 struct arccom *ac;
249 struct mbuf *m;
250 struct arc_header *ah;
251
252 ac = (struct arccom *)ifp;
253 if ((m = ac->curr_frag) == 0) {
254 int tfrags;
255
256 /* dequeue new packet */
257 IF_DEQUEUE(&ifp->if_snd, m);
258 if (m == 0)
259 return 0;
260
261 ah = mtod(m, struct arc_header *);
262 if (!arc_isphds(ah->arc_type))
263 return m;
264
265 ++ac->ac_seqid; /* make the seqid unique */
266 tfrags = (m->m_pkthdr.len + ARC_MAX_DATA - 1) / ARC_MAX_DATA;
267 ac->fsflag = 2 * tfrags - 3;
268 ac->sflag = 0;
269 ac->rsflag = ac->fsflag;
270 ac->arc_dhost = ah->arc_dhost;
271 ac->arc_shost = ah->arc_shost;
272 ac->arc_type = ah->arc_type;
273
274 m_adj(m, ARC_HDRNEWLEN);
275 ac->curr_frag = m;
276 }
277
278 /* split out next fragment and return it */
279 if (ac->sflag < ac->fsflag) {
280 /* we CAN'T have short packets here */
281 ac->curr_frag = m_split(m, ARC_MAX_DATA, M_DONTWAIT);
282 if (ac->curr_frag == 0) {
283 m_freem(m);
284 return 0;
285 }
286
287 M_PREPEND(m, ARC_HDRNEWLEN, M_DONTWAIT);
288 if (m == 0) {
289 m_freem(ac->curr_frag);
290 ac->curr_frag = 0;
291 return 0;
292 }
293
294 ah = mtod(m, struct arc_header *);
295 ah->arc_flag = ac->rsflag;
296 ah->arc_seqid = ac->ac_seqid;
297
298 ac->sflag += 2;
299 ac->rsflag = ac->sflag;
300 } else if ((m->m_pkthdr.len >=
301 ARC_MIN_FORBID_LEN - ARC_HDRNEWLEN + 2) &&
302 (m->m_pkthdr.len <=
303 ARC_MAX_FORBID_LEN - ARC_HDRNEWLEN + 2)) {
304 ac->curr_frag = 0;
305
306 M_PREPEND(m, ARC_HDRNEWLEN_EXC, M_DONTWAIT);
307 if (m == 0)
308 return 0;
309
310 ah = mtod(m, struct arc_header *);
311 ah->arc_flag = 0xFF;
312 ah->arc_seqid = 0xFFFF;
313 ah->arc_type2 = ac->arc_type;
314 ah->arc_flag2 = ac->sflag;
315 ah->arc_seqid2 = ac->ac_seqid;
316 } else {
317 ac->curr_frag = 0;
318
319 M_PREPEND(m, ARC_HDRNEWLEN, M_DONTWAIT);
320 if (m == 0)
321 return 0;
322
323 ah = mtod(m, struct arc_header *);
324 ah->arc_flag = ac->sflag;
325 ah->arc_seqid = ac->ac_seqid;
326 }
327
328 ah->arc_dhost = ac->arc_dhost;
329 ah->arc_shost = ac->arc_shost;
330 ah->arc_type = ac->arc_type;
331
332 return m;
333}
334
335/*
336 * Defragmenter. Returns mbuf if last packet found, else
337 * NULL. frees imcoming mbuf as necessary.
338 */
339
340static __inline struct mbuf *
341arc_defrag(ifp, m)
342 struct ifnet *ifp;
343 struct mbuf *m;
344{
345 struct arc_header *ah, *ah1;
346 struct arccom *ac;
347 struct ac_frag *af;
348 struct mbuf *m1;
349 char *s;
350 int newflen;
351 u_char src,dst,typ;
352
353 ac = (struct arccom *)ifp;
354
355 if (m->m_len < ARC_HDRNEWLEN) {
356 m = m_pullup(m, ARC_HDRNEWLEN);
357 if (m == NULL) {
358 ++ifp->if_ierrors;
359 return NULL;
360 }
361 }
362
363 ah = mtod(m, struct arc_header *);
364 typ = ah->arc_type;
365
366 if (!arc_isphds(typ))
367 return m;
368
369 src = ah->arc_shost;
370 dst = ah->arc_dhost;
371
372 if (ah->arc_flag == 0xff) {
373 m_adj(m, 4);
374
375 if (m->m_len < ARC_HDRNEWLEN) {
376 m = m_pullup(m, ARC_HDRNEWLEN);
377 if (m == NULL) {
378 ++ifp->if_ierrors;
379 return NULL;
380 }
381 }
382
383 ah = mtod(m, struct arc_header *);
384 }
385
386 af = &ac->ac_fragtab[src];
387 m1 = af->af_packet;
388 s = "debug code error";
389
390 if (ah->arc_flag & 1) {
391 /*
392 * first fragment. We always initialize, which is
393 * about the right thing to do, as we only want to
394 * accept one fragmented packet per src at a time.
395 */
396 if (m1 != NULL)
397 m_freem(m1);
398
399 af->af_packet = m;
400 m1 = m;
401 af->af_maxflag = ah->arc_flag;
402 af->af_lastseen = 0;
403 af->af_seqid = ah->arc_seqid;
404
405 return NULL;
406 /* notreached */
407 } else {
408 /* check for unfragmented packet */
409 if (ah->arc_flag == 0)
410 return m;
411
412 /* do we have a first packet from that src? */
413 if (m1 == NULL) {
414 s = "no first frag";
415 goto outofseq;
416 }
417
418 ah1 = mtod(m1, struct arc_header *);
419
420 if (ah->arc_seqid != ah1->arc_seqid) {
421 s = "seqid differs";
422 goto outofseq;
423 }
424
425 if (typ != ah1->arc_type) {
426 s = "type differs";
427 goto outofseq;
428 }
429
430 if (dst != ah1->arc_dhost) {
431 s = "dest host differs";
432 goto outofseq;
433 }
434
435 /* typ, seqid and dst are ok here. */
436
437 if (ah->arc_flag == af->af_lastseen) {
438 m_freem(m);
439 return NULL;
440 }
441
442 if (ah->arc_flag == af->af_lastseen + 2) {
443 /* ok, this is next fragment */
444 af->af_lastseen = ah->arc_flag;
445 m_adj(m,ARC_HDRNEWLEN);
446
447 /*
448 * m_cat might free the first mbuf (with pkthdr)
449 * in 2nd chain; therefore:
450 */
451
452 newflen = m->m_pkthdr.len;
453
454 m_cat(m1,m);
455
456 m1->m_pkthdr.len += newflen;
457
458 /* is it the last one? */
459 if (af->af_lastseen > af->af_maxflag) {
460 af->af_packet = NULL;
461 return(m1);
462 } else
463 return NULL;
464 }
465 s = "other reason";
466 /* if all else fails, it is out of sequence, too */
467 }
468outofseq:
469 if (m1) {
470 m_freem(m1);
471 af->af_packet = NULL;
472 }
473
474 if (m)
475 m_freem(m);
476
477 log(LOG_INFO,"%s%d: got out of seq. packet: %s\n",
478 ifp->if_name, ifp->if_unit, s);
479
480 return NULL;
481}
482
483/*
484 * return 1 if Packet Header Definition Standard, else 0.
485 * For now: old IP, old ARP aren't obviously. Lacking correct information,
486 * we guess that besides new IP and new ARP also IPX and APPLETALK are PHDS.
487 * (Apple and Novell corporations were involved, among others, in PHDS work).
488 * Easiest is to assume that everybody else uses that, too.
489 */
490int
491arc_isphds(type)
492 u_int8_t type;
493{
494 return (type != ARCTYPE_IP_OLD &&
495 type != ARCTYPE_ARP_OLD &&
496 type != ARCTYPE_DIAGNOSE);
497}
498
499/*
500 * Process a received Arcnet packet;
501 * the packet is in the mbuf chain m with
502 * the ARCnet header.
503 */
504void
505arc_input(ifp, m)
506 struct ifnet *ifp;
507 struct mbuf *m;
508{
509 struct arc_header *ah;
|
608}
609
610/*
611 * Register (new) link level address.
612 */
613void
614arc_storelladdr(ifp, lla)
615 struct ifnet *ifp;
616 u_int8_t lla;
617{
618 ARC_LLADDR(ifp) = lla;
619}
620
621/*
622 * Perform common duties while attaching to interface list
623 */
624void
625arc_ifattach(ifp, lla)
626 struct ifnet *ifp;
627 u_int8_t lla;
628{
629 struct ifaddr *ifa;
630 struct sockaddr_dl *sdl;
631 struct arccom *ac;
632
633 if_attach(ifp);
634 ifp->if_type = IFT_ARCNET;
635 ifp->if_addrlen = 1;
636 ifp->if_hdrlen = ARC_HDRLEN;
637 ifp->if_mtu = 1500;
638 ifp->if_resolvemulti = arc_resolvemulti;
639 if (ifp->if_baudrate == 0)
640 ifp->if_baudrate = 2500000;
641#if __FreeBSD_version < 500000
642 ifa = ifnet_addrs[ifp->if_index - 1];
643#else
644 ifa = ifaddr_byindex(ifp->if_index);
645#endif
646 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __FUNCTION__));
647 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
648 sdl->sdl_type = IFT_ARCNET;
649 sdl->sdl_alen = ifp->if_addrlen;
650
651 if (ifp->if_flags & IFF_BROADCAST)
652 ifp->if_flags |= IFF_MULTICAST|IFF_ALLMULTI;
653
654 ac = (struct arccom *)ifp;
655 ac->ac_seqid = (time_second) & 0xFFFF; /* try to make seqid unique */
656 if (lla == 0) {
657 /* XXX this message isn't entirely clear, to me -- cgd */
658 log(LOG_ERR,"%s%d: link address 0 reserved for broadcasts. Please change it and ifconfig %s%d down up\n",
659 ifp->if_name, ifp->if_unit, ifp->if_name, ifp->if_unit);
660 }
661 arc_storelladdr(ifp, lla);
662
663 ifp->if_broadcastaddr = &arcbroadcastaddr;
664
665 bpfattach(ifp, DLT_ARCNET, ARC_HDRLEN);
666}
667
668void
669arc_ifdetach(ifp)
670 struct ifnet *ifp;
671{
672 bpfdetach(ifp);
673 if_detach(ifp);
674}
675
676int
677arc_ioctl(ifp, command, data)
678 struct ifnet *ifp;
679 int command;
680 caddr_t data;
681{
682 struct ifaddr *ifa = (struct ifaddr *) data;
683 struct ifreq *ifr = (struct ifreq *) data;
684 int error = 0;
685
686 switch (command) {
687 case SIOCSIFADDR:
688 ifp->if_flags |= IFF_UP;
689 switch (ifa->ifa_addr->sa_family) {
690#ifdef INET
691 case AF_INET:
692 ifp->if_init(ifp->if_softc); /* before arpwhohas */
693 arp_ifinit(ifp, ifa);
694 break;
695#endif
696#ifdef IPX
697 /*
698 * XXX This code is probably wrong
699 */
700 case AF_IPX:
701 {
702 struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
703
704 if (ipx_nullhost(*ina))
705 ina->x_host.c_host[5] = ARC_LLADDR(ifp);
706 else
707 arc_storelladdr(ifp, ina->x_host.c_host[5]);
708
709 /*
710 * Set new address
711 */
712 ifp->if_init(ifp->if_softc);
713 break;
714 }
715#endif
716 default:
717 ifp->if_init(ifp->if_softc);
718 break;
719 }
720 break;
721
722 case SIOCGIFADDR:
723 {
724 struct sockaddr *sa;
725
726 sa = (struct sockaddr *) &ifr->ifr_data;
727 *(u_int8_t *)sa->sa_data = ARC_LLADDR(ifp);
728 }
729 break;
730
731 case SIOCADDMULTI:
732 case SIOCDELMULTI:
733 if (ifr == NULL)
734 error = EAFNOSUPPORT;
735 else {
736 switch (ifr->ifr_addr.sa_family) {
737 case AF_INET:
738 case AF_INET6:
739 error = 0;
740 break;
741 default:
742 error = EAFNOSUPPORT;
743 break;
744 }
745 }
746 break;
747
748 case SIOCSIFMTU:
749 /*
750 * Set the interface MTU.
751 * mtu can't be larger than ARCMTU for RFC1051
752 * and can't be larger than ARC_PHDS_MTU
753 */
754 if (((ifp->if_flags & IFF_LINK0) && ifr->ifr_mtu > ARCMTU) ||
755 ifr->ifr_mtu > ARC_PHDS_MAXMTU)
756 error = EINVAL;
757 else
758 ifp->if_mtu = ifr->ifr_mtu;
759 break;
760 }
761
762 return (error);
763}
764
765/* based on ether_resolvemulti() */
766int
767arc_resolvemulti(ifp, llsa, sa)
768 struct ifnet *ifp;
769 struct sockaddr **llsa;
770 struct sockaddr *sa;
771{
772 struct sockaddr_dl *sdl;
773 struct sockaddr_in *sin;
774#ifdef INET6
775 struct sockaddr_in6 *sin6;
776#endif
777
778 switch(sa->sa_family) {
779 case AF_LINK:
780 /*
781 * No mapping needed. Just check that it's a valid MC address.
782 */
783 sdl = (struct sockaddr_dl *)sa;
784 if (*LLADDR(sdl) != arcbroadcastaddr)
785 return EADDRNOTAVAIL;
786 *llsa = 0;
787 return 0;
788#ifdef INET
789 case AF_INET:
790 sin = (struct sockaddr_in *)sa;
791 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
792 return EADDRNOTAVAIL;
793 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
794 M_ZERO);
795 sdl->sdl_len = sizeof *sdl;
796 sdl->sdl_family = AF_LINK;
797 sdl->sdl_index = ifp->if_index;
798 sdl->sdl_type = IFT_ARCNET;
799 sdl->sdl_alen = ARC_ADDR_LEN;
800 *LLADDR(sdl) = 0;
801 *llsa = (struct sockaddr *)sdl;
802 return 0;
803#endif
804#ifdef INET6
805 case AF_INET6:
806 sin6 = (struct sockaddr_in6 *)sa;
807 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
808 /*
809 * An IP6 address of 0 means listen to all
810 * of the Ethernet multicast address used for IP6.
811 * (This is used for multicast routers.)
812 */
813 ifp->if_flags |= IFF_ALLMULTI;
814 *llsa = 0;
815 return 0;
816 }
817 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
818 return EADDRNOTAVAIL;
819 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
820 M_ZERO);
821 sdl->sdl_len = sizeof *sdl;
822 sdl->sdl_family = AF_LINK;
823 sdl->sdl_index = ifp->if_index;
824 sdl->sdl_type = IFT_ARCNET;
825 sdl->sdl_alen = ARC_ADDR_LEN;
826 *LLADDR(sdl) = 0;
827 *llsa = (struct sockaddr *)sdl;
828 return 0;
829#endif
830
831 default:
832 /*
833 * Well, the text isn't quite right, but it's the name
834 * that counts...
835 */
836 return EAFNOSUPPORT;
837 }
838}
| 601}
602
603/*
604 * Register (new) link level address.
605 */
606void
607arc_storelladdr(ifp, lla)
608 struct ifnet *ifp;
609 u_int8_t lla;
610{
611 ARC_LLADDR(ifp) = lla;
612}
613
614/*
615 * Perform common duties while attaching to interface list
616 */
617void
618arc_ifattach(ifp, lla)
619 struct ifnet *ifp;
620 u_int8_t lla;
621{
622 struct ifaddr *ifa;
623 struct sockaddr_dl *sdl;
624 struct arccom *ac;
625
626 if_attach(ifp);
627 ifp->if_type = IFT_ARCNET;
628 ifp->if_addrlen = 1;
629 ifp->if_hdrlen = ARC_HDRLEN;
630 ifp->if_mtu = 1500;
631 ifp->if_resolvemulti = arc_resolvemulti;
632 if (ifp->if_baudrate == 0)
633 ifp->if_baudrate = 2500000;
634#if __FreeBSD_version < 500000
635 ifa = ifnet_addrs[ifp->if_index - 1];
636#else
637 ifa = ifaddr_byindex(ifp->if_index);
638#endif
639 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __FUNCTION__));
640 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
641 sdl->sdl_type = IFT_ARCNET;
642 sdl->sdl_alen = ifp->if_addrlen;
643
644 if (ifp->if_flags & IFF_BROADCAST)
645 ifp->if_flags |= IFF_MULTICAST|IFF_ALLMULTI;
646
647 ac = (struct arccom *)ifp;
648 ac->ac_seqid = (time_second) & 0xFFFF; /* try to make seqid unique */
649 if (lla == 0) {
650 /* XXX this message isn't entirely clear, to me -- cgd */
651 log(LOG_ERR,"%s%d: link address 0 reserved for broadcasts. Please change it and ifconfig %s%d down up\n",
652 ifp->if_name, ifp->if_unit, ifp->if_name, ifp->if_unit);
653 }
654 arc_storelladdr(ifp, lla);
655
656 ifp->if_broadcastaddr = &arcbroadcastaddr;
657
658 bpfattach(ifp, DLT_ARCNET, ARC_HDRLEN);
659}
660
661void
662arc_ifdetach(ifp)
663 struct ifnet *ifp;
664{
665 bpfdetach(ifp);
666 if_detach(ifp);
667}
668
669int
670arc_ioctl(ifp, command, data)
671 struct ifnet *ifp;
672 int command;
673 caddr_t data;
674{
675 struct ifaddr *ifa = (struct ifaddr *) data;
676 struct ifreq *ifr = (struct ifreq *) data;
677 int error = 0;
678
679 switch (command) {
680 case SIOCSIFADDR:
681 ifp->if_flags |= IFF_UP;
682 switch (ifa->ifa_addr->sa_family) {
683#ifdef INET
684 case AF_INET:
685 ifp->if_init(ifp->if_softc); /* before arpwhohas */
686 arp_ifinit(ifp, ifa);
687 break;
688#endif
689#ifdef IPX
690 /*
691 * XXX This code is probably wrong
692 */
693 case AF_IPX:
694 {
695 struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
696
697 if (ipx_nullhost(*ina))
698 ina->x_host.c_host[5] = ARC_LLADDR(ifp);
699 else
700 arc_storelladdr(ifp, ina->x_host.c_host[5]);
701
702 /*
703 * Set new address
704 */
705 ifp->if_init(ifp->if_softc);
706 break;
707 }
708#endif
709 default:
710 ifp->if_init(ifp->if_softc);
711 break;
712 }
713 break;
714
715 case SIOCGIFADDR:
716 {
717 struct sockaddr *sa;
718
719 sa = (struct sockaddr *) &ifr->ifr_data;
720 *(u_int8_t *)sa->sa_data = ARC_LLADDR(ifp);
721 }
722 break;
723
724 case SIOCADDMULTI:
725 case SIOCDELMULTI:
726 if (ifr == NULL)
727 error = EAFNOSUPPORT;
728 else {
729 switch (ifr->ifr_addr.sa_family) {
730 case AF_INET:
731 case AF_INET6:
732 error = 0;
733 break;
734 default:
735 error = EAFNOSUPPORT;
736 break;
737 }
738 }
739 break;
740
741 case SIOCSIFMTU:
742 /*
743 * Set the interface MTU.
744 * mtu can't be larger than ARCMTU for RFC1051
745 * and can't be larger than ARC_PHDS_MTU
746 */
747 if (((ifp->if_flags & IFF_LINK0) && ifr->ifr_mtu > ARCMTU) ||
748 ifr->ifr_mtu > ARC_PHDS_MAXMTU)
749 error = EINVAL;
750 else
751 ifp->if_mtu = ifr->ifr_mtu;
752 break;
753 }
754
755 return (error);
756}
757
758/* based on ether_resolvemulti() */
759int
760arc_resolvemulti(ifp, llsa, sa)
761 struct ifnet *ifp;
762 struct sockaddr **llsa;
763 struct sockaddr *sa;
764{
765 struct sockaddr_dl *sdl;
766 struct sockaddr_in *sin;
767#ifdef INET6
768 struct sockaddr_in6 *sin6;
769#endif
770
771 switch(sa->sa_family) {
772 case AF_LINK:
773 /*
774 * No mapping needed. Just check that it's a valid MC address.
775 */
776 sdl = (struct sockaddr_dl *)sa;
777 if (*LLADDR(sdl) != arcbroadcastaddr)
778 return EADDRNOTAVAIL;
779 *llsa = 0;
780 return 0;
781#ifdef INET
782 case AF_INET:
783 sin = (struct sockaddr_in *)sa;
784 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
785 return EADDRNOTAVAIL;
786 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
787 M_ZERO);
788 sdl->sdl_len = sizeof *sdl;
789 sdl->sdl_family = AF_LINK;
790 sdl->sdl_index = ifp->if_index;
791 sdl->sdl_type = IFT_ARCNET;
792 sdl->sdl_alen = ARC_ADDR_LEN;
793 *LLADDR(sdl) = 0;
794 *llsa = (struct sockaddr *)sdl;
795 return 0;
796#endif
797#ifdef INET6
798 case AF_INET6:
799 sin6 = (struct sockaddr_in6 *)sa;
800 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
801 /*
802 * An IP6 address of 0 means listen to all
803 * of the Ethernet multicast address used for IP6.
804 * (This is used for multicast routers.)
805 */
806 ifp->if_flags |= IFF_ALLMULTI;
807 *llsa = 0;
808 return 0;
809 }
810 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
811 return EADDRNOTAVAIL;
812 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
813 M_ZERO);
814 sdl->sdl_len = sizeof *sdl;
815 sdl->sdl_family = AF_LINK;
816 sdl->sdl_index = ifp->if_index;
817 sdl->sdl_type = IFT_ARCNET;
818 sdl->sdl_alen = ARC_ADDR_LEN;
819 *LLADDR(sdl) = 0;
820 *llsa = (struct sockaddr *)sdl;
821 return 0;
822#endif
823
824 default:
825 /*
826 * Well, the text isn't quite right, but it's the name
827 * that counts...
828 */
829 return EAFNOSUPPORT;
830 }
831}
|