1/*
2 * Copyright (c) 1995, 1996
3 * Matt Thomas <matt@3am-software.com>. All rights reserved.
4 * Copyright (c) 1982, 1989, 1993
5 * The Regents of the University of California. 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_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
| 1/*
2 * Copyright (c) 1995, 1996
3 * Matt Thomas <matt@3am-software.com>. All rights reserved.
4 * Copyright (c) 1982, 1989, 1993
5 * The Regents of the University of California. 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_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
|
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/mbuf.h>
43#include <sys/socket.h>
44
45#include <net/if.h>
46#include <net/netisr.h>
47#include <net/route.h>
48#include <net/if_llc.h>
49#include <net/if_dl.h>
50#include <net/if_types.h>
51
52#ifdef INET
53#include <netinet/in.h>
54#include <netinet/in_var.h>
55#endif
56#include <netinet/if_ether.h>
57#if defined(__FreeBSD__)
58#include <netinet/if_fddi.h>
59#else
60#include <net/if_fddi.h>
61#endif
62
63#ifdef IPX
64#include <netipx/ipx.h>
65#include <netipx/ipx_if.h>
66#endif
67
68#ifdef NS
69#include <netns/ns.h>
70#include <netns/ns_if.h>
71#endif
72
73#ifdef DECNET
74#include <netdnet/dn.h>
75#endif
76
77#ifdef ISO
78#include <netiso/argo_debug.h>
79#include <netiso/iso.h>
80#include <netiso/iso_var.h>
81#include <netiso/iso_snpac.h>
82#endif
83
84#ifdef LLC
85#include <netccitt/dll.h>
86#include <netccitt/llc_var.h>
87#endif
88
89#ifdef NETATALK
90#include <netatalk/at.h>
91#include <netatalk/at_var.h>
92#include <netatalk/at_extern.h>
93
94#define llc_snap_org_code llc_un.type_snap.org_code
95#define llc_snap_ether_type llc_un.type_snap.ether_type
96
97extern u_char at_org_code[ 3 ];
98extern u_char aarp_org_code[ 3 ];
99#endif /* NETATALK */
100
101#if defined(LLC) && defined(CCITT)
102extern struct ifqueue pkintrq;
103#endif
104
105#include "bpfilter.h"
106
107#define senderr(e) { error = (e); goto bad;}
108
109/*
110 * This really should be defined in if_llc.h but in case it isn't.
111 */
112#ifndef llc_snap
113#define llc_snap llc_un.type_snap
114#endif
115
116#if defined(__bsdi__) || defined(__NetBSD__)
117#define RTALLOC1(a, b) rtalloc1(a, b)
118#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e)
119#elif defined(__FreeBSD__)
120#define RTALLOC1(a, b) rtalloc1(a, b, 0UL)
121#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f)
122#endif
123/*
124 * FDDI output routine.
125 * Encapsulate a packet of type family for the local net.
126 * Use trailer local net encapsulation if enough data in first
127 * packet leaves a multiple of 512 bytes of data in remainder.
128 * Assumes that ifp is actually pointer to arpcom structure.
129 */
130int
131fddi_output(ifp, m0, dst, rt0)
132 register struct ifnet *ifp;
133 struct mbuf *m0;
134 struct sockaddr *dst;
135 struct rtentry *rt0;
136{
137 u_int16_t type;
138 int s, error = 0;
139 u_char edst[6];
140 register struct mbuf *m = m0;
141 register struct rtentry *rt;
142 register struct fddi_header *fh;
143 struct mbuf *mcopy = (struct mbuf *)0;
144 struct arpcom *ac = (struct arpcom *)ifp;
145
146 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
147 senderr(ENETDOWN);
| 37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/mbuf.h>
43#include <sys/socket.h>
44
45#include <net/if.h>
46#include <net/netisr.h>
47#include <net/route.h>
48#include <net/if_llc.h>
49#include <net/if_dl.h>
50#include <net/if_types.h>
51
52#ifdef INET
53#include <netinet/in.h>
54#include <netinet/in_var.h>
55#endif
56#include <netinet/if_ether.h>
57#if defined(__FreeBSD__)
58#include <netinet/if_fddi.h>
59#else
60#include <net/if_fddi.h>
61#endif
62
63#ifdef IPX
64#include <netipx/ipx.h>
65#include <netipx/ipx_if.h>
66#endif
67
68#ifdef NS
69#include <netns/ns.h>
70#include <netns/ns_if.h>
71#endif
72
73#ifdef DECNET
74#include <netdnet/dn.h>
75#endif
76
77#ifdef ISO
78#include <netiso/argo_debug.h>
79#include <netiso/iso.h>
80#include <netiso/iso_var.h>
81#include <netiso/iso_snpac.h>
82#endif
83
84#ifdef LLC
85#include <netccitt/dll.h>
86#include <netccitt/llc_var.h>
87#endif
88
89#ifdef NETATALK
90#include <netatalk/at.h>
91#include <netatalk/at_var.h>
92#include <netatalk/at_extern.h>
93
94#define llc_snap_org_code llc_un.type_snap.org_code
95#define llc_snap_ether_type llc_un.type_snap.ether_type
96
97extern u_char at_org_code[ 3 ];
98extern u_char aarp_org_code[ 3 ];
99#endif /* NETATALK */
100
101#if defined(LLC) && defined(CCITT)
102extern struct ifqueue pkintrq;
103#endif
104
105#include "bpfilter.h"
106
107#define senderr(e) { error = (e); goto bad;}
108
109/*
110 * This really should be defined in if_llc.h but in case it isn't.
111 */
112#ifndef llc_snap
113#define llc_snap llc_un.type_snap
114#endif
115
116#if defined(__bsdi__) || defined(__NetBSD__)
117#define RTALLOC1(a, b) rtalloc1(a, b)
118#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e)
119#elif defined(__FreeBSD__)
120#define RTALLOC1(a, b) rtalloc1(a, b, 0UL)
121#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f)
122#endif
123/*
124 * FDDI output routine.
125 * Encapsulate a packet of type family for the local net.
126 * Use trailer local net encapsulation if enough data in first
127 * packet leaves a multiple of 512 bytes of data in remainder.
128 * Assumes that ifp is actually pointer to arpcom structure.
129 */
130int
131fddi_output(ifp, m0, dst, rt0)
132 register struct ifnet *ifp;
133 struct mbuf *m0;
134 struct sockaddr *dst;
135 struct rtentry *rt0;
136{
137 u_int16_t type;
138 int s, error = 0;
139 u_char edst[6];
140 register struct mbuf *m = m0;
141 register struct rtentry *rt;
142 register struct fddi_header *fh;
143 struct mbuf *mcopy = (struct mbuf *)0;
144 struct arpcom *ac = (struct arpcom *)ifp;
145
146 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
147 senderr(ENETDOWN);
|
149#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
150 if (rt = rt0) {
151 if ((rt->rt_flags & RTF_UP) == 0) {
152 if (rt0 = rt = RTALLOC1(dst, 1))
153 rt->rt_refcnt--;
154 else
155 senderr(EHOSTUNREACH);
156 }
157 if (rt->rt_flags & RTF_GATEWAY) {
158 if (rt->rt_gwroute == 0)
159 goto lookup;
160 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
161 rtfree(rt); rt = rt0;
162 lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1);
163 if ((rt = rt->rt_gwroute) == 0)
164 senderr(EHOSTUNREACH);
165 }
166 }
167 if (rt->rt_flags & RTF_REJECT)
168 if (rt->rt_rmx.rmx_expire == 0 ||
169 time.tv_sec < rt->rt_rmx.rmx_expire)
170 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
171 }
172#endif
173 switch (dst->sa_family) {
174
175#ifdef INET
176 case AF_INET: {
177#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
178 if (!ARPRESOLVE(ac, rt, m, dst, edst, rt0))
179 return (0); /* if not yet resolved */
180#else
181 int usetrailers;
182 if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers))
183 return (0); /* if not yet resolved */
184#endif
185 /* If broadcasting on a simplex interface, loopback a copy */
186 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
187 mcopy = m_copy(m, 0, (int)M_COPYALL);
188 type = htons(ETHERTYPE_IP);
189 break;
190 }
191#endif
192#ifdef IPX
193 case AF_IPX:
194 {
195 struct ifaddr *ia;
196
197 type = htons(ETHERTYPE_IPX);
198 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
199 (caddr_t)edst, sizeof (edst));
200
201 for(ia = ifp->if_addrhead.tqh_first; ia != 0;
202 ia = ia->ifa_link.tqe_next) {
203 if(ia->ifa_addr->sa_family == AF_IPX &&
204 !bcmp((caddr_t)edst,
205 (caddr_t)&((struct ipx_ifaddr *)ia)->ia_addr.sipx_addr.x_host,
206 sizeof(edst)) )
207 return (looutput(ifp, m, dst, rt));
208 }
209
210 /* If broadcasting on a simplex interface, loopback a copy */
211 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
212 mcopy = m_copy(m, 0, (int)M_COPYALL);
213 break;
214 }
215#endif
216#ifdef NETATALK
217 case AF_APPLETALK: {
218 struct at_ifaddr *aa;
219 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) {
220#ifdef NETATALKDEBUG
221 extern char *prsockaddr(struct sockaddr *);
222 printf("aarpresolv: failed for %s\n", prsockaddr(dst));
223#endif
224 return (0);
225 }
226 /*
227 * ifaddr is the first thing in at_ifaddr
228 */
229 if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0)
230 goto bad;
231
232 /*
233 * In the phase 2 case, we need to prepend an mbuf for the llc header.
234 * Since we must preserve the value of m, which is passed to us by
235 * value, we m_copy() the first mbuf, and use it for our llc header.
236 */
237 if (aa->aa_flags & AFA_PHASE2) {
238 struct llc llc;
239
240 M_PREPEND(m, sizeof(struct llc), M_WAIT);
241 if (m == 0)
242 senderr(ENOBUFS);
243 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
244 llc.llc_control = LLC_UI;
245 bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
246 llc.llc_snap_ether_type = htons(ETHERTYPE_AT);
247 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
248 type = 0;
249 } else {
250 type = htons(ETHERTYPE_AT);
251 }
252 break;
253 }
254#endif /* NETATALK */
255#ifdef NS
256 case AF_NS:
257 type = htons(ETHERTYPE_NS);
258 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
259 (caddr_t)edst, sizeof (edst));
260 if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst)))
261 return (looutput(ifp, m, dst, rt));
262 /* If broadcasting on a simplex interface, loopback a copy */
263 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
264 mcopy = m_copy(m, 0, (int)M_COPYALL);
265 break;
266#endif
267#ifdef ISO
268 case AF_ISO: {
269 int snpalen;
270 struct llc *l;
271 register struct sockaddr_dl *sdl;
272
273 if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) &&
274 sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) {
275 bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst));
276 } else if (error =
277 iso_snparesolve(ifp, (struct sockaddr_iso *)dst,
278 (char *)edst, &snpalen))
279 goto bad; /* Not Resolved */
280 /* If broadcasting on a simplex interface, loopback a copy */
281 if (*edst & 1)
282 m->m_flags |= (M_BCAST|M_MCAST);
283 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) &&
284 (mcopy = m_copy(m, 0, (int)M_COPYALL))) {
285 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
286 if (mcopy) {
287 fh = mtod(mcopy, struct fddi_header *);
288 bcopy((caddr_t)edst,
289 (caddr_t)fh->fddi_dhost, sizeof (edst));
290 bcopy((caddr_t)ac->ac_enaddr,
291 (caddr_t)fh->fddi_shost, sizeof (edst));
292 }
293 }
294 M_PREPEND(m, 3, M_DONTWAIT);
295 if (m == NULL)
296 return (0);
297 type = 0;
298 l = mtod(m, struct llc *);
299 l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
300 l->llc_control = LLC_UI;
301 IFDEBUG(D_ETHER)
302 int i;
303 printf("unoutput: sending pkt to: ");
304 for (i=0; i<6; i++)
305 printf("%x ", edst[i] & 0xff);
306 printf("\n");
307 ENDDEBUG
308 } break;
309#endif /* ISO */
310#ifdef LLC
311/* case AF_NSAP: */
312 case AF_CCITT: {
313 register struct sockaddr_dl *sdl =
314 (struct sockaddr_dl *) rt -> rt_gateway;
315
316 if (sdl && sdl->sdl_family != AF_LINK && sdl->sdl_alen <= 0)
317 goto bad; /* Not a link interface ? Funny ... */
318 bcopy(LLADDR(sdl), (char *)edst, sizeof(edst));
319 if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) &&
320 (mcopy = m_copy(m, 0, (int)M_COPYALL))) {
321 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
322 if (mcopy) {
323 fh = mtod(mcopy, struct fddi_header *);
324 bcopy((caddr_t)edst,
325 (caddr_t)fh->fddi_dhost, sizeof (edst));
326 bcopy((caddr_t)ac->ac_enaddr,
327 (caddr_t)fh->fddi_shost, sizeof (edst));
328 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
329 }
330 }
331 type = 0;
332#ifdef LLC_DEBUG
333 {
334 int i;
335 register struct llc *l = mtod(m, struct llc *);
336
337 printf("fddi_output: sending LLC2 pkt to: ");
338 for (i=0; i<6; i++)
339 printf("%x ", edst[i] & 0xff);
340 printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n",
341 type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff,
342 l->llc_control & 0xff);
343
344 }
345#endif /* LLC_DEBUG */
346 } break;
347#endif /* LLC */
348
349 case AF_UNSPEC:
350 {
351 struct ether_header *eh;
352 eh = (struct ether_header *)dst->sa_data;
353 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
354 if (*edst & 1)
355 m->m_flags |= (M_BCAST|M_MCAST);
356 type = eh->ether_type;
357 break;
358 }
359
360#if NBPFILTER > 0
361 case AF_IMPLINK:
362 {
363 fh = mtod(m, struct fddi_header *);
364 error = EPROTONOSUPPORT;
365 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) {
366 case FDDIFC_LLC_ASYNC: {
367 /* legal priorities are 0 through 7 */
368 if ((fh->fddi_fc & FDDIFC_Z) > 7)
369 goto bad;
370 break;
371 }
372 case FDDIFC_LLC_SYNC: {
373 /* FDDIFC_Z bits reserved, must be zero */
374 if (fh->fddi_fc & FDDIFC_Z)
375 goto bad;
376 break;
377 }
378 case FDDIFC_SMT: {
379 /* FDDIFC_Z bits must be non zero */
380 if ((fh->fddi_fc & FDDIFC_Z) == 0)
381 goto bad;
382 break;
383 }
384 default: {
385 /* anything else is too dangerous */
386 goto bad;
387 }
388 }
389 error = 0;
390 if (fh->fddi_dhost[0] & 1)
391 m->m_flags |= (M_BCAST|M_MCAST);
392 goto queue_it;
393 }
394#endif
395 default:
396 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
397 dst->sa_family);
398 senderr(EAFNOSUPPORT);
399 }
400
401
402 if (mcopy)
403 (void) looutput(ifp, mcopy, dst, rt);
404 if (type != 0) {
405 register struct llc *l;
406 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT);
407 if (m == 0)
408 senderr(ENOBUFS);
409 l = mtod(m, struct llc *);
410 l->llc_control = LLC_UI;
411 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
412 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
413 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
414 sizeof(u_int16_t));
415 }
416 /*
417 * Add local net header. If no space in first mbuf,
418 * allocate another.
419 */
420 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT);
421 if (m == 0)
422 senderr(ENOBUFS);
423 fh = mtod(m, struct fddi_header *);
424 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
425 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
426 queue_it:
427 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
428 sizeof(fh->fddi_shost));
429 s = splimp();
430 /*
431 * Queue message on interface, and start output if interface
432 * not yet active.
433 */
434 if (IF_QFULL(&ifp->if_snd)) {
435 IF_DROP(&ifp->if_snd);
436 splx(s);
437 senderr(ENOBUFS);
438 }
439 ifp->if_obytes += m->m_pkthdr.len;
440 IF_ENQUEUE(&ifp->if_snd, m);
441 if ((ifp->if_flags & IFF_OACTIVE) == 0)
442 (*ifp->if_start)(ifp);
443 splx(s);
444 if (m->m_flags & M_MCAST)
445 ifp->if_omcasts++;
446 return (error);
447
448bad:
449 if (m)
450 m_freem(m);
451 return (error);
452}
453
454/*
455 * Process a received FDDI packet;
456 * the packet is in the mbuf chain m without
457 * the fddi header, which is provided separately.
458 */
459void
460fddi_input(ifp, fh, m)
461 struct ifnet *ifp;
462 register struct fddi_header *fh;
463 struct mbuf *m;
464{
465 register struct ifqueue *inq;
466 register struct llc *l;
467 int s;
468
469 if ((ifp->if_flags & IFF_UP) == 0) {
470 m_freem(m);
471 return;
472 }
| 149#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
150 if (rt = rt0) {
151 if ((rt->rt_flags & RTF_UP) == 0) {
152 if (rt0 = rt = RTALLOC1(dst, 1))
153 rt->rt_refcnt--;
154 else
155 senderr(EHOSTUNREACH);
156 }
157 if (rt->rt_flags & RTF_GATEWAY) {
158 if (rt->rt_gwroute == 0)
159 goto lookup;
160 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
161 rtfree(rt); rt = rt0;
162 lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1);
163 if ((rt = rt->rt_gwroute) == 0)
164 senderr(EHOSTUNREACH);
165 }
166 }
167 if (rt->rt_flags & RTF_REJECT)
168 if (rt->rt_rmx.rmx_expire == 0 ||
169 time.tv_sec < rt->rt_rmx.rmx_expire)
170 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
171 }
172#endif
173 switch (dst->sa_family) {
174
175#ifdef INET
176 case AF_INET: {
177#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
178 if (!ARPRESOLVE(ac, rt, m, dst, edst, rt0))
179 return (0); /* if not yet resolved */
180#else
181 int usetrailers;
182 if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers))
183 return (0); /* if not yet resolved */
184#endif
185 /* If broadcasting on a simplex interface, loopback a copy */
186 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
187 mcopy = m_copy(m, 0, (int)M_COPYALL);
188 type = htons(ETHERTYPE_IP);
189 break;
190 }
191#endif
192#ifdef IPX
193 case AF_IPX:
194 {
195 struct ifaddr *ia;
196
197 type = htons(ETHERTYPE_IPX);
198 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
199 (caddr_t)edst, sizeof (edst));
200
201 for(ia = ifp->if_addrhead.tqh_first; ia != 0;
202 ia = ia->ifa_link.tqe_next) {
203 if(ia->ifa_addr->sa_family == AF_IPX &&
204 !bcmp((caddr_t)edst,
205 (caddr_t)&((struct ipx_ifaddr *)ia)->ia_addr.sipx_addr.x_host,
206 sizeof(edst)) )
207 return (looutput(ifp, m, dst, rt));
208 }
209
210 /* If broadcasting on a simplex interface, loopback a copy */
211 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
212 mcopy = m_copy(m, 0, (int)M_COPYALL);
213 break;
214 }
215#endif
216#ifdef NETATALK
217 case AF_APPLETALK: {
218 struct at_ifaddr *aa;
219 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) {
220#ifdef NETATALKDEBUG
221 extern char *prsockaddr(struct sockaddr *);
222 printf("aarpresolv: failed for %s\n", prsockaddr(dst));
223#endif
224 return (0);
225 }
226 /*
227 * ifaddr is the first thing in at_ifaddr
228 */
229 if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0)
230 goto bad;
231
232 /*
233 * In the phase 2 case, we need to prepend an mbuf for the llc header.
234 * Since we must preserve the value of m, which is passed to us by
235 * value, we m_copy() the first mbuf, and use it for our llc header.
236 */
237 if (aa->aa_flags & AFA_PHASE2) {
238 struct llc llc;
239
240 M_PREPEND(m, sizeof(struct llc), M_WAIT);
241 if (m == 0)
242 senderr(ENOBUFS);
243 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
244 llc.llc_control = LLC_UI;
245 bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
246 llc.llc_snap_ether_type = htons(ETHERTYPE_AT);
247 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
248 type = 0;
249 } else {
250 type = htons(ETHERTYPE_AT);
251 }
252 break;
253 }
254#endif /* NETATALK */
255#ifdef NS
256 case AF_NS:
257 type = htons(ETHERTYPE_NS);
258 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
259 (caddr_t)edst, sizeof (edst));
260 if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst)))
261 return (looutput(ifp, m, dst, rt));
262 /* If broadcasting on a simplex interface, loopback a copy */
263 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
264 mcopy = m_copy(m, 0, (int)M_COPYALL);
265 break;
266#endif
267#ifdef ISO
268 case AF_ISO: {
269 int snpalen;
270 struct llc *l;
271 register struct sockaddr_dl *sdl;
272
273 if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) &&
274 sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) {
275 bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst));
276 } else if (error =
277 iso_snparesolve(ifp, (struct sockaddr_iso *)dst,
278 (char *)edst, &snpalen))
279 goto bad; /* Not Resolved */
280 /* If broadcasting on a simplex interface, loopback a copy */
281 if (*edst & 1)
282 m->m_flags |= (M_BCAST|M_MCAST);
283 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) &&
284 (mcopy = m_copy(m, 0, (int)M_COPYALL))) {
285 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
286 if (mcopy) {
287 fh = mtod(mcopy, struct fddi_header *);
288 bcopy((caddr_t)edst,
289 (caddr_t)fh->fddi_dhost, sizeof (edst));
290 bcopy((caddr_t)ac->ac_enaddr,
291 (caddr_t)fh->fddi_shost, sizeof (edst));
292 }
293 }
294 M_PREPEND(m, 3, M_DONTWAIT);
295 if (m == NULL)
296 return (0);
297 type = 0;
298 l = mtod(m, struct llc *);
299 l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
300 l->llc_control = LLC_UI;
301 IFDEBUG(D_ETHER)
302 int i;
303 printf("unoutput: sending pkt to: ");
304 for (i=0; i<6; i++)
305 printf("%x ", edst[i] & 0xff);
306 printf("\n");
307 ENDDEBUG
308 } break;
309#endif /* ISO */
310#ifdef LLC
311/* case AF_NSAP: */
312 case AF_CCITT: {
313 register struct sockaddr_dl *sdl =
314 (struct sockaddr_dl *) rt -> rt_gateway;
315
316 if (sdl && sdl->sdl_family != AF_LINK && sdl->sdl_alen <= 0)
317 goto bad; /* Not a link interface ? Funny ... */
318 bcopy(LLADDR(sdl), (char *)edst, sizeof(edst));
319 if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) &&
320 (mcopy = m_copy(m, 0, (int)M_COPYALL))) {
321 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT);
322 if (mcopy) {
323 fh = mtod(mcopy, struct fddi_header *);
324 bcopy((caddr_t)edst,
325 (caddr_t)fh->fddi_dhost, sizeof (edst));
326 bcopy((caddr_t)ac->ac_enaddr,
327 (caddr_t)fh->fddi_shost, sizeof (edst));
328 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
329 }
330 }
331 type = 0;
332#ifdef LLC_DEBUG
333 {
334 int i;
335 register struct llc *l = mtod(m, struct llc *);
336
337 printf("fddi_output: sending LLC2 pkt to: ");
338 for (i=0; i<6; i++)
339 printf("%x ", edst[i] & 0xff);
340 printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n",
341 type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff,
342 l->llc_control & 0xff);
343
344 }
345#endif /* LLC_DEBUG */
346 } break;
347#endif /* LLC */
348
349 case AF_UNSPEC:
350 {
351 struct ether_header *eh;
352 eh = (struct ether_header *)dst->sa_data;
353 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
354 if (*edst & 1)
355 m->m_flags |= (M_BCAST|M_MCAST);
356 type = eh->ether_type;
357 break;
358 }
359
360#if NBPFILTER > 0
361 case AF_IMPLINK:
362 {
363 fh = mtod(m, struct fddi_header *);
364 error = EPROTONOSUPPORT;
365 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) {
366 case FDDIFC_LLC_ASYNC: {
367 /* legal priorities are 0 through 7 */
368 if ((fh->fddi_fc & FDDIFC_Z) > 7)
369 goto bad;
370 break;
371 }
372 case FDDIFC_LLC_SYNC: {
373 /* FDDIFC_Z bits reserved, must be zero */
374 if (fh->fddi_fc & FDDIFC_Z)
375 goto bad;
376 break;
377 }
378 case FDDIFC_SMT: {
379 /* FDDIFC_Z bits must be non zero */
380 if ((fh->fddi_fc & FDDIFC_Z) == 0)
381 goto bad;
382 break;
383 }
384 default: {
385 /* anything else is too dangerous */
386 goto bad;
387 }
388 }
389 error = 0;
390 if (fh->fddi_dhost[0] & 1)
391 m->m_flags |= (M_BCAST|M_MCAST);
392 goto queue_it;
393 }
394#endif
395 default:
396 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
397 dst->sa_family);
398 senderr(EAFNOSUPPORT);
399 }
400
401
402 if (mcopy)
403 (void) looutput(ifp, mcopy, dst, rt);
404 if (type != 0) {
405 register struct llc *l;
406 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT);
407 if (m == 0)
408 senderr(ENOBUFS);
409 l = mtod(m, struct llc *);
410 l->llc_control = LLC_UI;
411 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
412 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
413 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
414 sizeof(u_int16_t));
415 }
416 /*
417 * Add local net header. If no space in first mbuf,
418 * allocate another.
419 */
420 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT);
421 if (m == 0)
422 senderr(ENOBUFS);
423 fh = mtod(m, struct fddi_header *);
424 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
425 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
426 queue_it:
427 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
428 sizeof(fh->fddi_shost));
429 s = splimp();
430 /*
431 * Queue message on interface, and start output if interface
432 * not yet active.
433 */
434 if (IF_QFULL(&ifp->if_snd)) {
435 IF_DROP(&ifp->if_snd);
436 splx(s);
437 senderr(ENOBUFS);
438 }
439 ifp->if_obytes += m->m_pkthdr.len;
440 IF_ENQUEUE(&ifp->if_snd, m);
441 if ((ifp->if_flags & IFF_OACTIVE) == 0)
442 (*ifp->if_start)(ifp);
443 splx(s);
444 if (m->m_flags & M_MCAST)
445 ifp->if_omcasts++;
446 return (error);
447
448bad:
449 if (m)
450 m_freem(m);
451 return (error);
452}
453
454/*
455 * Process a received FDDI packet;
456 * the packet is in the mbuf chain m without
457 * the fddi header, which is provided separately.
458 */
459void
460fddi_input(ifp, fh, m)
461 struct ifnet *ifp;
462 register struct fddi_header *fh;
463 struct mbuf *m;
464{
465 register struct ifqueue *inq;
466 register struct llc *l;
467 int s;
468
469 if ((ifp->if_flags & IFF_UP) == 0) {
470 m_freem(m);
471 return;
472 }
|
474 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
475 if (fh->fddi_dhost[0] & 1) {
476 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
477 sizeof(fddibroadcastaddr)) == 0)
478 m->m_flags |= M_BCAST;
479 else
480 m->m_flags |= M_MCAST;
481 ifp->if_imcasts++;
482 } else if ((ifp->if_flags & IFF_PROMISC)
483 && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
484 sizeof(fh->fddi_dhost)) != 0) {
485 m_freem(m);
486 return;
487 }
488
489#ifdef M_LINK0
490 /*
491 * If this has a LLC priority of 0, then mark it so upper
492 * layers have a hint that it really came via a FDDI/Ethernet
493 * bridge.
494 */
495 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0)
496 m->m_flags |= M_LINK0;
497#endif
498
499 l = mtod(m, struct llc *);
500 switch (l->llc_dsap) {
501#if defined(INET) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK)
502 case LLC_SNAP_LSAP:
503 {
504 u_int16_t type;
505 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
506 goto dropanyway;
507#ifdef NETATALK
508 if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code,
509 sizeof(at_org_code)) == 0 &&
510 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) {
511 inq = &atintrq2;
512 m_adj( m, sizeof( struct llc ));
513 schednetisr(NETISR_ATALK);
514 break;
515 }
516
517 if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code,
518 sizeof(aarp_org_code)) == 0 &&
519 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) {
520 m_adj( m, sizeof( struct llc ));
521 aarpinput((struct arpcom *)ifp, m); /* XXX */
522 return;
523 }
524#endif /* NETATALK */
525 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
526 goto dropanyway;
527 type = ntohs(l->llc_snap.ether_type);
528 m_adj(m, 8);
529 switch (type) {
530#ifdef INET
531 case ETHERTYPE_IP:
532 schednetisr(NETISR_IP);
533 inq = &ipintrq;
534 break;
535
536 case ETHERTYPE_ARP:
537#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
538 schednetisr(NETISR_ARP);
539 inq = &arpintrq;
540 break;
541#else
542 arpinput((struct arpcom *)ifp, m);
543 return;
544#endif
545#endif
546#ifdef IPX
547 case ETHERTYPE_IPX:
548 schednetisr(NETISR_IPX);
549 inq = &ipxintrq;
550 break;
551#endif
552#ifdef NS
553 case ETHERTYPE_NS:
554 schednetisr(NETISR_NS);
555 inq = &nsintrq;
556 break;
557#endif
558#ifdef DECNET
559 case ETHERTYPE_DECNET:
560 schednetisr(NETISR_DECNET);
561 inq = &decnetintrq;
562 break;
563#endif
564#ifdef NETATALK
565 case ETHERTYPE_AT:
566 schednetisr(NETISR_ATALK);
567 inq = &atintrq1;
568 break;
569 case ETHERTYPE_AARP:
570 /* probably this should be done with a NETISR as well */
571 aarpinput((struct arpcom *)ifp, m); /* XXX */
572 return;
573#endif /* NETATALK */
574 default:
575 /* printf("fddi_input: unknown protocol 0x%x\n", type); */
576 ifp->if_noproto++;
577 goto dropanyway;
578 }
579 break;
580 }
581#endif /* INET || NS */
582#ifdef ISO
583 case LLC_ISO_LSAP:
584 switch (l->llc_control) {
585 case LLC_UI:
586 /* LLC_UI_P forbidden in class 1 service */
587 if ((l->llc_dsap == LLC_ISO_LSAP) &&
588 (l->llc_ssap == LLC_ISO_LSAP)) {
589 /* LSAP for ISO */
590 m->m_data += 3; /* XXX */
591 m->m_len -= 3; /* XXX */
592 m->m_pkthdr.len -= 3; /* XXX */
593 M_PREPEND(m, sizeof *fh, M_DONTWAIT);
594 if (m == 0)
595 return;
596 *mtod(m, struct fddi_header *) = *fh;
597 IFDEBUG(D_ETHER)
598 printf("clnp packet");
599 ENDDEBUG
600 schednetisr(NETISR_ISO);
601 inq = &clnlintrq;
602 break;
603 }
604 goto dropanyway;
605
606 case LLC_XID:
607 case LLC_XID_P:
608 if(m->m_len < 6)
609 goto dropanyway;
610 l->llc_window = 0;
611 l->llc_fid = 9;
612 l->llc_class = 1;
613 l->llc_dsap = l->llc_ssap = 0;
614 /* Fall through to */
615 case LLC_TEST:
616 case LLC_TEST_P:
617 {
618 struct sockaddr sa;
619 register struct ether_header *eh;
620 struct arpcom *ac = (struct arpcom *) ifp;
621 int i;
622 u_char c = l->llc_dsap;
623
624 l->llc_dsap = l->llc_ssap;
625 l->llc_ssap = c;
626 if (m->m_flags & (M_BCAST | M_MCAST))
627 bcopy((caddr_t)ac->ac_enaddr,
628 (caddr_t)eh->ether_dhost, 6);
629 sa.sa_family = AF_UNSPEC;
630 sa.sa_len = sizeof(sa);
631 eh = (struct ether_header *)sa.sa_data;
632 for (i = 0; i < 6; i++) {
633 eh->ether_shost[i] = fh->fddi_dhost[i];
634 eh->ether_dhost[i] = fh->fddi_shost[i];
635 }
636 eh->ether_type = 0;
637 ifp->if_output(ifp, m, &sa, NULL);
638 return;
639 }
640 default:
641 m_freem(m);
642 return;
643 }
644 break;
645#endif /* ISO */
646#ifdef LLC
647 case LLC_X25_LSAP:
648 {
649 M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT);
650 if (m == 0)
651 return;
652 if ( !sdl_sethdrif(ifp, fh->fddi_shost, LLC_X25_LSAP,
653 fh->fddi_dhost, LLC_X25_LSAP, 6,
654 mtod(m, struct sdl_hdr *)))
655 panic("ETHER cons addr failure");
656 mtod(m, struct sdl_hdr *)->sdlhdr_len = m->m_pkthdr.len - sizeof(struct sdl_hdr);
657#ifdef LLC_DEBUG
658 printf("llc packet\n");
659#endif /* LLC_DEBUG */
660 schednetisr(NETISR_CCITT);
661 inq = &llcintrq;
662 break;
663 }
664#endif /* LLC */
665
666 default:
667 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */
668 ifp->if_noproto++;
669 dropanyway:
670 m_freem(m);
671 return;
672 }
673
674 s = splimp();
675 if (IF_QFULL(inq)) {
676 IF_DROP(inq);
677 m_freem(m);
678 } else
679 IF_ENQUEUE(inq, m);
680 splx(s);
681}
682/*
683 * Perform common duties while attaching to interface list
684 */
685#ifdef __NetBSD__
686#define ifa_next ifa_list.tqe_next
687#endif
688
689void
690fddi_ifattach(ifp)
691 register struct ifnet *ifp;
692{
693 register struct ifaddr *ifa;
694 register struct sockaddr_dl *sdl;
695
696 ifp->if_type = IFT_FDDI;
697 ifp->if_addrlen = 6;
698 ifp->if_hdrlen = 21;
699 ifp->if_mtu = FDDIMTU;
700 ifp->if_baudrate = 100000000;
701#ifdef IFF_NOTRAILERS
702 ifp->if_flags |= IFF_NOTRAILERS;
703#endif
704#if defined(__FreeBSD__)
705 ifa = ifnet_addrs[ifp->if_index - 1];
706 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
707 sdl->sdl_type = IFT_FDDI;
708 sdl->sdl_alen = ifp->if_addrlen;
709 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
710#elif defined(__NetBSD__)
711 LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs);
712 for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next)
713#else
714 for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next)
715#endif
716#if !defined(__FreeBSD__)
717 if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) &&
718 sdl->sdl_family == AF_LINK) {
719 sdl->sdl_type = IFT_FDDI;
720 sdl->sdl_alen = ifp->if_addrlen;
721 bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr,
722 LLADDR(sdl), ifp->if_addrlen);
723 break;
724 }
725#endif
726}
| 474 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
475 if (fh->fddi_dhost[0] & 1) {
476 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
477 sizeof(fddibroadcastaddr)) == 0)
478 m->m_flags |= M_BCAST;
479 else
480 m->m_flags |= M_MCAST;
481 ifp->if_imcasts++;
482 } else if ((ifp->if_flags & IFF_PROMISC)
483 && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
484 sizeof(fh->fddi_dhost)) != 0) {
485 m_freem(m);
486 return;
487 }
488
489#ifdef M_LINK0
490 /*
491 * If this has a LLC priority of 0, then mark it so upper
492 * layers have a hint that it really came via a FDDI/Ethernet
493 * bridge.
494 */
495 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0)
496 m->m_flags |= M_LINK0;
497#endif
498
499 l = mtod(m, struct llc *);
500 switch (l->llc_dsap) {
501#if defined(INET) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK)
502 case LLC_SNAP_LSAP:
503 {
504 u_int16_t type;
505 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
506 goto dropanyway;
507#ifdef NETATALK
508 if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code,
509 sizeof(at_org_code)) == 0 &&
510 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) {
511 inq = &atintrq2;
512 m_adj( m, sizeof( struct llc ));
513 schednetisr(NETISR_ATALK);
514 break;
515 }
516
517 if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code,
518 sizeof(aarp_org_code)) == 0 &&
519 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) {
520 m_adj( m, sizeof( struct llc ));
521 aarpinput((struct arpcom *)ifp, m); /* XXX */
522 return;
523 }
524#endif /* NETATALK */
525 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
526 goto dropanyway;
527 type = ntohs(l->llc_snap.ether_type);
528 m_adj(m, 8);
529 switch (type) {
530#ifdef INET
531 case ETHERTYPE_IP:
532 schednetisr(NETISR_IP);
533 inq = &ipintrq;
534 break;
535
536 case ETHERTYPE_ARP:
537#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
538 schednetisr(NETISR_ARP);
539 inq = &arpintrq;
540 break;
541#else
542 arpinput((struct arpcom *)ifp, m);
543 return;
544#endif
545#endif
546#ifdef IPX
547 case ETHERTYPE_IPX:
548 schednetisr(NETISR_IPX);
549 inq = &ipxintrq;
550 break;
551#endif
552#ifdef NS
553 case ETHERTYPE_NS:
554 schednetisr(NETISR_NS);
555 inq = &nsintrq;
556 break;
557#endif
558#ifdef DECNET
559 case ETHERTYPE_DECNET:
560 schednetisr(NETISR_DECNET);
561 inq = &decnetintrq;
562 break;
563#endif
564#ifdef NETATALK
565 case ETHERTYPE_AT:
566 schednetisr(NETISR_ATALK);
567 inq = &atintrq1;
568 break;
569 case ETHERTYPE_AARP:
570 /* probably this should be done with a NETISR as well */
571 aarpinput((struct arpcom *)ifp, m); /* XXX */
572 return;
573#endif /* NETATALK */
574 default:
575 /* printf("fddi_input: unknown protocol 0x%x\n", type); */
576 ifp->if_noproto++;
577 goto dropanyway;
578 }
579 break;
580 }
581#endif /* INET || NS */
582#ifdef ISO
583 case LLC_ISO_LSAP:
584 switch (l->llc_control) {
585 case LLC_UI:
586 /* LLC_UI_P forbidden in class 1 service */
587 if ((l->llc_dsap == LLC_ISO_LSAP) &&
588 (l->llc_ssap == LLC_ISO_LSAP)) {
589 /* LSAP for ISO */
590 m->m_data += 3; /* XXX */
591 m->m_len -= 3; /* XXX */
592 m->m_pkthdr.len -= 3; /* XXX */
593 M_PREPEND(m, sizeof *fh, M_DONTWAIT);
594 if (m == 0)
595 return;
596 *mtod(m, struct fddi_header *) = *fh;
597 IFDEBUG(D_ETHER)
598 printf("clnp packet");
599 ENDDEBUG
600 schednetisr(NETISR_ISO);
601 inq = &clnlintrq;
602 break;
603 }
604 goto dropanyway;
605
606 case LLC_XID:
607 case LLC_XID_P:
608 if(m->m_len < 6)
609 goto dropanyway;
610 l->llc_window = 0;
611 l->llc_fid = 9;
612 l->llc_class = 1;
613 l->llc_dsap = l->llc_ssap = 0;
614 /* Fall through to */
615 case LLC_TEST:
616 case LLC_TEST_P:
617 {
618 struct sockaddr sa;
619 register struct ether_header *eh;
620 struct arpcom *ac = (struct arpcom *) ifp;
621 int i;
622 u_char c = l->llc_dsap;
623
624 l->llc_dsap = l->llc_ssap;
625 l->llc_ssap = c;
626 if (m->m_flags & (M_BCAST | M_MCAST))
627 bcopy((caddr_t)ac->ac_enaddr,
628 (caddr_t)eh->ether_dhost, 6);
629 sa.sa_family = AF_UNSPEC;
630 sa.sa_len = sizeof(sa);
631 eh = (struct ether_header *)sa.sa_data;
632 for (i = 0; i < 6; i++) {
633 eh->ether_shost[i] = fh->fddi_dhost[i];
634 eh->ether_dhost[i] = fh->fddi_shost[i];
635 }
636 eh->ether_type = 0;
637 ifp->if_output(ifp, m, &sa, NULL);
638 return;
639 }
640 default:
641 m_freem(m);
642 return;
643 }
644 break;
645#endif /* ISO */
646#ifdef LLC
647 case LLC_X25_LSAP:
648 {
649 M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT);
650 if (m == 0)
651 return;
652 if ( !sdl_sethdrif(ifp, fh->fddi_shost, LLC_X25_LSAP,
653 fh->fddi_dhost, LLC_X25_LSAP, 6,
654 mtod(m, struct sdl_hdr *)))
655 panic("ETHER cons addr failure");
656 mtod(m, struct sdl_hdr *)->sdlhdr_len = m->m_pkthdr.len - sizeof(struct sdl_hdr);
657#ifdef LLC_DEBUG
658 printf("llc packet\n");
659#endif /* LLC_DEBUG */
660 schednetisr(NETISR_CCITT);
661 inq = &llcintrq;
662 break;
663 }
664#endif /* LLC */
665
666 default:
667 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */
668 ifp->if_noproto++;
669 dropanyway:
670 m_freem(m);
671 return;
672 }
673
674 s = splimp();
675 if (IF_QFULL(inq)) {
676 IF_DROP(inq);
677 m_freem(m);
678 } else
679 IF_ENQUEUE(inq, m);
680 splx(s);
681}
682/*
683 * Perform common duties while attaching to interface list
684 */
685#ifdef __NetBSD__
686#define ifa_next ifa_list.tqe_next
687#endif
688
689void
690fddi_ifattach(ifp)
691 register struct ifnet *ifp;
692{
693 register struct ifaddr *ifa;
694 register struct sockaddr_dl *sdl;
695
696 ifp->if_type = IFT_FDDI;
697 ifp->if_addrlen = 6;
698 ifp->if_hdrlen = 21;
699 ifp->if_mtu = FDDIMTU;
700 ifp->if_baudrate = 100000000;
701#ifdef IFF_NOTRAILERS
702 ifp->if_flags |= IFF_NOTRAILERS;
703#endif
704#if defined(__FreeBSD__)
705 ifa = ifnet_addrs[ifp->if_index - 1];
706 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
707 sdl->sdl_type = IFT_FDDI;
708 sdl->sdl_alen = ifp->if_addrlen;
709 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
710#elif defined(__NetBSD__)
711 LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs);
712 for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next)
713#else
714 for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next)
715#endif
716#if !defined(__FreeBSD__)
717 if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) &&
718 sdl->sdl_family == AF_LINK) {
719 sdl->sdl_type = IFT_FDDI;
720 sdl->sdl_alen = ifp->if_addrlen;
721 bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr,
722 LLADDR(sdl), ifp->if_addrlen);
723 break;
724 }
725#endif
726}
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