1 | /* $NetBSD: if_fddisubr.c,v 1.102 2016/10/03 11:06:06 ozaki-r Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
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. Neither the name of the project nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | */ |
31 | |
32 | /* |
33 | * Copyright (c) 1982, 1989, 1993 |
34 | * The Regents of the University of California. All rights reserved. |
35 | * |
36 | * Redistribution and use in source and binary forms, with or without |
37 | * modification, are permitted provided that the following conditions |
38 | * are met: |
39 | * 1. Redistributions of source code must retain the above copyright |
40 | * notice, this list of conditions and the following disclaimer. |
41 | * 2. Redistributions in binary form must reproduce the above copyright |
42 | * notice, this list of conditions and the following disclaimer in the |
43 | * documentation and/or other materials provided with the distribution. |
44 | * 3. Neither the name of the University nor the names of its contributors |
45 | * may be used to endorse or promote products derived from this software |
46 | * without specific prior written permission. |
47 | * |
48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
58 | * SUCH DAMAGE. |
59 | * |
60 | * @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93 |
61 | * |
62 | * Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp |
63 | */ |
64 | |
65 | /* |
66 | * Copyright (c) 1995, 1996 |
67 | * Matt Thomas <matt@3am-software.com>. All rights reserved. |
68 | * |
69 | * Redistribution and use in source and binary forms, with or without |
70 | * modification, are permitted provided that the following conditions |
71 | * are met: |
72 | * 1. Redistributions of source code must retain the above copyright |
73 | * notice, this list of conditions and the following disclaimer. |
74 | * 2. Redistributions in binary form must reproduce the above copyright |
75 | * notice, this list of conditions and the following disclaimer in the |
76 | * documentation and/or other materials provided with the distribution. |
77 | * 3. The name of its contributor may not be used to endorse or promote |
78 | * products derived from this software without specific prior written |
79 | * permission. |
80 | * |
81 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
82 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
83 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
84 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
85 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
86 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
87 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
88 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
89 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
90 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
91 | * SUCH DAMAGE. |
92 | * |
93 | * @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93 |
94 | * |
95 | * Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp |
96 | */ |
97 | |
98 | #include <sys/cdefs.h> |
99 | __KERNEL_RCSID(0, "$NetBSD: if_fddisubr.c,v 1.102 2016/10/03 11:06:06 ozaki-r Exp $" ); |
100 | |
101 | #ifdef _KERNEL_OPT |
102 | #include "opt_gateway.h" |
103 | #include "opt_inet.h" |
104 | #include "opt_atalk.h" |
105 | #include "opt_mbuftrace.h" |
106 | #endif |
107 | |
108 | |
109 | #include <sys/param.h> |
110 | #include <sys/systm.h> |
111 | #include <sys/kernel.h> |
112 | #include <sys/malloc.h> |
113 | #include <sys/mbuf.h> |
114 | #include <sys/protosw.h> |
115 | #include <sys/socket.h> |
116 | #include <sys/ioctl.h> |
117 | #include <sys/errno.h> |
118 | #include <sys/syslog.h> |
119 | |
120 | #include <sys/cpu.h> |
121 | |
122 | #include <net/if.h> |
123 | #include <net/netisr.h> |
124 | #include <net/route.h> |
125 | #include <net/if_llc.h> |
126 | #include <net/if_dl.h> |
127 | #include <net/if_types.h> |
128 | |
129 | #include <net/bpf.h> |
130 | |
131 | #ifdef INET |
132 | #include <netinet/in.h> |
133 | #include <netinet/in_var.h> |
134 | #include <netinet/if_inarp.h> |
135 | #endif |
136 | #include <net/if_fddi.h> |
137 | |
138 | #ifdef INET6 |
139 | #ifndef INET |
140 | #include <netinet/in.h> |
141 | #include <netinet/in_var.h> |
142 | #endif |
143 | #include <netinet6/nd6.h> |
144 | #endif |
145 | |
146 | |
147 | #include "carp.h" |
148 | #if NCARP > 0 |
149 | #include <netinet/ip_carp.h> |
150 | #endif |
151 | |
152 | #ifdef NETATALK |
153 | #include <netatalk/at.h> |
154 | #include <netatalk/at_var.h> |
155 | #include <netatalk/at_extern.h> |
156 | |
157 | #define llc_snap_org_code llc_un.type_snap.org_code |
158 | #define llc_snap_ether_type llc_un.type_snap.ether_type |
159 | |
160 | extern u_char at_org_code[ 3 ]; |
161 | extern u_char aarp_org_code[ 3 ]; |
162 | #endif /* NETATALK */ |
163 | |
164 | |
165 | |
166 | #define senderr(e) { error = (e); goto bad;} |
167 | |
168 | /* |
169 | * This really should be defined in if_llc.h but in case it isn't. |
170 | */ |
171 | #ifndef llc_snap |
172 | #define llc_snap llc_un.type_snap |
173 | #endif |
174 | |
175 | #define FDDIADDR(ifp) LLADDR((ifp)->if_sadl) |
176 | #define CFDDIADDR(ifp) CLLADDR((ifp)->if_sadl) |
177 | |
178 | static int fddi_output(struct ifnet *, struct mbuf *, |
179 | const struct sockaddr *, const struct rtentry *); |
180 | static void fddi_input(struct ifnet *, struct mbuf *); |
181 | |
182 | /* |
183 | * FDDI output routine. |
184 | * Encapsulate a packet of type family for the local net. |
185 | * Assumes that ifp is actually pointer to ethercom structure. |
186 | */ |
187 | static int |
188 | fddi_output(struct ifnet *ifp0, struct mbuf *m0, const struct sockaddr *dst, |
189 | const struct rtentry *rt) |
190 | { |
191 | uint16_t etype; |
192 | int error = 0, hdrcmplt = 0; |
193 | uint8_t esrc[6], edst[6]; |
194 | struct mbuf *m = m0; |
195 | struct fddi_header *fh; |
196 | struct mbuf *mcopy = NULL; |
197 | struct ifnet *ifp = ifp0; |
198 | |
199 | MCLAIM(m, ifp->if_mowner); |
200 | |
201 | #if NCARP > 0 |
202 | if (ifp->if_type == IFT_CARP) { |
203 | struct ifaddr *ifa; |
204 | |
205 | /* loop back if this is going to the carp interface */ |
206 | if (dst != NULL && ifp0->if_link_state == LINK_STATE_UP) { |
207 | int s = pserialize_read_enter(); |
208 | ifa = ifa_ifwithaddr(dst); |
209 | if (ifa != NULL && |
210 | ifa->ifa_ifp == ifp0) { |
211 | pserialize_read_exit(s); |
212 | return (looutput(ifp0, m, dst, rt)); |
213 | } |
214 | pserialize_read_exit(s); |
215 | } |
216 | |
217 | ifp = ifp->if_carpdev; |
218 | /* ac = (struct arpcom *)ifp; */ |
219 | |
220 | if ((ifp0->if_flags & (IFF_UP|IFF_RUNNING)) != |
221 | (IFF_UP|IFF_RUNNING)) |
222 | senderr(ENETDOWN); |
223 | } |
224 | #endif /* NCARP > 0 */ |
225 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) |
226 | senderr(ENETDOWN); |
227 | |
228 | /* |
229 | * If the queueing discipline needs packet classification, |
230 | * do it before prepending link headers. |
231 | */ |
232 | IFQ_CLASSIFY(&ifp->if_snd, m, dst->sa_family); |
233 | |
234 | switch (dst->sa_family) { |
235 | |
236 | #ifdef INET |
237 | case AF_INET: { |
238 | if (m->m_flags & M_BCAST) |
239 | memcpy(edst, fddibroadcastaddr, sizeof(edst)); |
240 | else if (m->m_flags & M_MCAST) { |
241 | ETHER_MAP_IP_MULTICAST(&satocsin(dst)->sin_addr, |
242 | (char *)edst); |
243 | } else if ((error = arpresolve(ifp, rt, m, dst, edst, |
244 | sizeof(edst))) != 0) |
245 | return error == EWOULDBLOCK ? 0 : error; |
246 | /* If broadcasting on a simplex interface, loopback a copy */ |
247 | if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) |
248 | mcopy = m_copy(m, 0, (int)M_COPYALL); |
249 | etype = htons(ETHERTYPE_IP); |
250 | break; |
251 | } |
252 | #endif |
253 | #ifdef INET6 |
254 | case AF_INET6: |
255 | if (!nd6_storelladdr(ifp, rt, m, dst, edst, sizeof(edst))){ |
256 | /* something bad happened */ |
257 | return (0); |
258 | } |
259 | etype = htons(ETHERTYPE_IPV6); |
260 | break; |
261 | #endif |
262 | #ifdef AF_ARP |
263 | case AF_ARP: { |
264 | struct arphdr *ah = mtod(m, struct arphdr *); |
265 | if (m->m_flags & M_BCAST) |
266 | memcpy(edst, etherbroadcastaddr, sizeof(edst)); |
267 | else { |
268 | void *tha = ar_tha(ah); |
269 | if (tha == NULL) |
270 | return 0; |
271 | memcpy(edst, tha, sizeof(edst)); |
272 | } |
273 | |
274 | ah->ar_hrd = htons(ARPHRD_ETHER); |
275 | |
276 | switch (ntohs(ah->ar_op)) { |
277 | case ARPOP_REVREQUEST: |
278 | case ARPOP_REVREPLY: |
279 | etype = htons(ETHERTYPE_REVARP); |
280 | break; |
281 | |
282 | case ARPOP_REQUEST: |
283 | case ARPOP_REPLY: |
284 | default: |
285 | etype = htons(ETHERTYPE_ARP); |
286 | } |
287 | |
288 | break; |
289 | } |
290 | #endif /* AF_ARP */ |
291 | #ifdef NETATALK |
292 | case AF_APPLETALK: { |
293 | struct at_ifaddr *aa; |
294 | struct ifaddr *ifa; |
295 | int s; |
296 | |
297 | if (!aarpresolve(ifp, m, (const struct sockaddr_at *)dst, edst)) { |
298 | #ifdef NETATALKDEBUG |
299 | printf("aarpresolv: failed\n" ); |
300 | #endif |
301 | return (0); |
302 | } |
303 | /* |
304 | * ifaddr is the first thing in at_ifaddr |
305 | */ |
306 | s = pserialize_read_enter(); |
307 | ifa = at_ifawithnet((const struct sockaddr_at *)dst, ifp); |
308 | if (ifa == NULL) { |
309 | pserialize_read_exit(s); |
310 | goto bad; |
311 | } |
312 | aa = (struct at_ifaddr *)ifa; |
313 | |
314 | /* |
315 | * In the phase 2 case, we need to prepend an mbuf for the llc |
316 | * header. Since we must preserve the value of m, which is |
317 | * passed to us by value, we m_copy() the first mbuf, and use |
318 | * it for our llc header. |
319 | */ |
320 | if (aa->aa_flags & AFA_PHASE2) { |
321 | struct llc llc; |
322 | |
323 | M_PREPEND(m, sizeof(struct llc), M_NOWAIT); |
324 | if (m == 0) |
325 | senderr(ENOBUFS); |
326 | llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; |
327 | llc.llc_control = LLC_UI; |
328 | memcpy(llc.llc_snap_org_code, at_org_code, |
329 | sizeof(at_org_code)); |
330 | llc.llc_snap_ether_type = htons(ETHERTYPE_ATALK); |
331 | memcpy(mtod(m, void *), &llc, sizeof(struct llc)); |
332 | etype = 0; |
333 | } else { |
334 | etype = htons(ETHERTYPE_ATALK); |
335 | } |
336 | pserialize_read_exit(s); |
337 | break; |
338 | } |
339 | #endif /* NETATALK */ |
340 | |
341 | case pseudo_AF_HDRCMPLT: |
342 | { |
343 | const struct fddi_header *fh1 = |
344 | (const struct fddi_header *)dst->sa_data; |
345 | hdrcmplt = 1; |
346 | memcpy(esrc, fh1->fddi_shost, sizeof (esrc)); |
347 | /*FALLTHROUGH*/ |
348 | } |
349 | |
350 | case AF_LINK: |
351 | { |
352 | const struct fddi_header *fh1 = |
353 | (const struct fddi_header *)dst->sa_data; |
354 | memcpy(edst, fh1->fddi_dhost, sizeof (edst)); |
355 | if (*edst & 1) |
356 | m->m_flags |= (M_BCAST|M_MCAST); |
357 | etype = 0; |
358 | break; |
359 | } |
360 | |
361 | case AF_UNSPEC: |
362 | { |
363 | const struct ether_header *eh; |
364 | eh = (const struct ether_header *)dst->sa_data; |
365 | memcpy(edst, eh->ether_dhost, sizeof(edst)); |
366 | if (*edst & 1) |
367 | m->m_flags |= (M_BCAST|M_MCAST); |
368 | etype = eh->ether_type; |
369 | break; |
370 | } |
371 | |
372 | default: |
373 | printf("%s: can't handle af%d\n" , ifp->if_xname, |
374 | dst->sa_family); |
375 | senderr(EAFNOSUPPORT); |
376 | } |
377 | |
378 | |
379 | if (mcopy) |
380 | (void) looutput(ifp, mcopy, dst, rt); |
381 | if (etype != 0) { |
382 | struct llc *l; |
383 | M_PREPEND(m, sizeof (struct llc), M_DONTWAIT); |
384 | if (m == 0) |
385 | senderr(ENOBUFS); |
386 | l = mtod(m, struct llc *); |
387 | l->llc_control = LLC_UI; |
388 | l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; |
389 | l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; |
390 | memcpy(&l->llc_snap.ether_type, &etype, sizeof(uint16_t)); |
391 | } |
392 | /* |
393 | * Add local net header. If no space in first mbuf, |
394 | * allocate another. |
395 | */ |
396 | M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT); |
397 | if (m == 0) |
398 | senderr(ENOBUFS); |
399 | fh = mtod(m, struct fddi_header *); |
400 | fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; |
401 | memcpy(fh->fddi_dhost, edst, sizeof (edst)); |
402 | if (hdrcmplt) |
403 | memcpy(fh->fddi_shost, esrc, sizeof(fh->fddi_shost)); |
404 | else |
405 | memcpy(fh->fddi_shost, CFDDIADDR(ifp), sizeof(fh->fddi_shost)); |
406 | |
407 | #if NCARP > 0 |
408 | if (ifp0 != ifp && ifp0->if_type == IFT_CARP) { |
409 | if_set_sadl(ifp0, fh->fddi_shost, sizeof(fh->fddi_shost), |
410 | false); |
411 | } |
412 | |
413 | if (ifp != ifp0) |
414 | ifp0->if_obytes += m->m_pkthdr.len; |
415 | #endif /* NCARP > 0 */ |
416 | return ifq_enqueue(ifp, m); |
417 | |
418 | bad: |
419 | if (m) |
420 | m_freem(m); |
421 | return (error); |
422 | } |
423 | |
424 | /* |
425 | * Process a received FDDI packet; |
426 | * the packet is in the mbuf chain m with |
427 | * the fddi header. |
428 | */ |
429 | static void |
430 | fddi_input(struct ifnet *ifp, struct mbuf *m) |
431 | { |
432 | #if defined(INET) || defined(INET6) |
433 | pktqueue_t *pktq = NULL; |
434 | #endif |
435 | #if defined(NETATALK) |
436 | struct ifqueue *inq = NULL; |
437 | int isr = 0; |
438 | #endif |
439 | |
440 | struct llc *l; |
441 | struct fddi_header *fh; |
442 | |
443 | MCLAIM(m, &((struct ethercom *)ifp)->ec_rx_mowner); |
444 | if ((ifp->if_flags & IFF_UP) == 0) { |
445 | m_freem(m); |
446 | return; |
447 | } |
448 | |
449 | fh = mtod(m, struct fddi_header *); |
450 | |
451 | ifp->if_ibytes += m->m_pkthdr.len; |
452 | if (fh->fddi_dhost[0] & 1) { |
453 | if (memcmp(fddibroadcastaddr, fh->fddi_dhost, |
454 | sizeof(fddibroadcastaddr)) == 0) |
455 | m->m_flags |= M_BCAST; |
456 | else |
457 | m->m_flags |= M_MCAST; |
458 | ifp->if_imcasts++; |
459 | } else if ((ifp->if_flags & IFF_PROMISC) |
460 | && memcmp(CFDDIADDR(ifp), (void *)fh->fddi_dhost, |
461 | sizeof(fh->fddi_dhost)) != 0) { |
462 | m_freem(m); |
463 | return; |
464 | } |
465 | |
466 | #ifdef M_LINK0 |
467 | /* |
468 | * If this has a LLC priority of 0, then mark it so upper |
469 | * layers have a hint that it really came via a FDDI/Ethernet |
470 | * bridge. |
471 | */ |
472 | if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) |
473 | m->m_flags |= M_LINK0; |
474 | #endif |
475 | |
476 | l = (struct llc *)(fh+1); |
477 | switch (l->llc_dsap) { |
478 | #if defined(INET) || defined(INET6) || defined(NETATALK) |
479 | case LLC_SNAP_LSAP: |
480 | { |
481 | uint16_t etype; |
482 | if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP) |
483 | goto dropanyway; |
484 | |
485 | /* Strip off the FDDI header. */ |
486 | m_adj(m, sizeof(struct fddi_header)); |
487 | |
488 | #ifdef NETATALK |
489 | if (memcmp(&(l->llc_snap_org_code)[0], at_org_code, |
490 | sizeof(at_org_code)) == 0 && |
491 | ntohs(l->llc_snap_ether_type) == ETHERTYPE_ATALK) { |
492 | inq = &atintrq2; |
493 | m_adj( m, sizeof( struct llc )); |
494 | isr = NETISR_ATALK; |
495 | break; |
496 | } |
497 | |
498 | if (memcmp(&(l->llc_snap_org_code)[0], aarp_org_code, |
499 | sizeof(aarp_org_code)) == 0 && |
500 | ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { |
501 | m_adj( m, sizeof( struct llc )); |
502 | aarpinput(ifp, m); /* XXX */ |
503 | return; |
504 | } |
505 | #endif /* NETATALK */ |
506 | if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0) |
507 | goto dropanyway; |
508 | etype = ntohs(l->llc_snap.ether_type); |
509 | m_adj(m, 8); |
510 | #if NCARP > 0 |
511 | if (ifp->if_carp && ifp->if_type != IFT_CARP && |
512 | (carp_input(m, (uint8_t *)&fh->fddi_shost, |
513 | (uint8_t *)&fh->fddi_dhost, l->llc_snap.ether_type) == 0)) |
514 | return; |
515 | #endif |
516 | |
517 | switch (etype) { |
518 | #ifdef INET |
519 | case ETHERTYPE_IP: |
520 | #ifdef GATEWAY |
521 | if (ipflow_fastforward(m)) |
522 | return; |
523 | #endif |
524 | pktq = ip_pktq; |
525 | break; |
526 | |
527 | case ETHERTYPE_ARP: |
528 | #if !defined(__bsdi__) || _BSDI_VERSION >= 199401 |
529 | #if defined(NETATALK) |
530 | isr = NETISR_ARP; |
531 | inq = &arpintrq; |
532 | #endif |
533 | break; |
534 | #else |
535 | arpinput(ifp, m); |
536 | return; |
537 | #endif |
538 | #endif |
539 | #ifdef INET6 |
540 | case ETHERTYPE_IPV6: |
541 | #ifdef GATEWAY |
542 | if (ip6flow_fastforward(&m)) |
543 | return; |
544 | #endif |
545 | pktq = ip6_pktq; |
546 | break; |
547 | |
548 | #endif |
549 | #ifdef NETATALK |
550 | case ETHERTYPE_ATALK: |
551 | isr = NETISR_ATALK; |
552 | inq = &atintrq1; |
553 | break; |
554 | case ETHERTYPE_AARP: |
555 | /* probably this should be done with a NETISR as well */ |
556 | aarpinput(ifp, m); /* XXX */ |
557 | return; |
558 | #endif /* NETATALK */ |
559 | default: |
560 | ifp->if_noproto++; |
561 | goto dropanyway; |
562 | } |
563 | break; |
564 | } |
565 | #endif /* INET || NS */ |
566 | |
567 | default: |
568 | ifp->if_noproto++; |
569 | #if defined(INET) || defined(INET6) || defined(NETATALK) |
570 | dropanyway: |
571 | #endif |
572 | m_freem(m); |
573 | return; |
574 | } |
575 | |
576 | #if defined(INET) || defined(INET6) |
577 | if (__predict_true(pktq)) { |
578 | if (__predict_false(!pktq_enqueue(pktq, m, 0))) { |
579 | m_freem(m); |
580 | } |
581 | return; |
582 | } |
583 | #endif |
584 | #if defined(NETATALK) |
585 | if (inq == NULL) { |
586 | m_freem(m); |
587 | return; |
588 | } |
589 | IFQ_LOCK(inq); |
590 | if (IF_QFULL(inq)) { |
591 | IF_DROP(inq); |
592 | IFQ_UNLOCK(inq); |
593 | m_freem(m); |
594 | } else { |
595 | IF_ENQUEUE(inq, m); |
596 | IFQ_UNLOCK(inq); |
597 | schednetisr(isr); |
598 | } |
599 | #endif |
600 | } |
601 | |
602 | /* |
603 | * Perform common duties while attaching to interface list |
604 | */ |
605 | void |
606 | fddi_ifattach(struct ifnet *ifp, void *lla) |
607 | { |
608 | struct ethercom *ec = (struct ethercom *)ifp; |
609 | |
610 | ifp->if_type = IFT_FDDI; |
611 | ifp->if_hdrlen = 21; |
612 | ifp->if_dlt = DLT_FDDI; |
613 | ifp->if_mtu = FDDIMTU; |
614 | ifp->if_output = fddi_output; |
615 | ifp->_if_input = fddi_input; |
616 | ifp->if_baudrate = IF_Mbps(100); |
617 | #ifdef IFF_NOTRAILERS |
618 | ifp->if_flags |= IFF_NOTRAILERS; |
619 | #endif |
620 | |
621 | /* |
622 | * Update the max_linkhdr |
623 | */ |
624 | if (ALIGN(ifp->if_hdrlen) > max_linkhdr) |
625 | max_linkhdr = ALIGN(ifp->if_hdrlen); |
626 | |
627 | LIST_INIT(&ec->ec_multiaddrs); |
628 | if_set_sadl(ifp, lla, 6, true); |
629 | |
630 | ifp->if_broadcastaddr = fddibroadcastaddr; |
631 | bpf_attach(ifp, DLT_FDDI, sizeof(struct fddi_header)); |
632 | #ifdef MBUFTRACE |
633 | strlcpy(ec->ec_tx_mowner.mo_name, ifp->if_xname, |
634 | sizeof(ec->ec_tx_mowner.mo_name)); |
635 | strlcpy(ec->ec_tx_mowner.mo_descr, "tx" , |
636 | sizeof(ec->ec_tx_mowner.mo_descr)); |
637 | strlcpy(ec->ec_rx_mowner.mo_name, ifp->if_xname, |
638 | sizeof(ec->ec_rx_mowner.mo_name)); |
639 | strlcpy(ec->ec_rx_mowner.mo_descr, "rx" , |
640 | sizeof(ec->ec_rx_mowner.mo_descr)); |
641 | MOWNER_ATTACH(&ec->ec_tx_mowner); |
642 | MOWNER_ATTACH(&ec->ec_rx_mowner); |
643 | ifp->if_mowner = &ec->ec_tx_mowner; |
644 | #endif |
645 | } |
646 | |