1 /* $NetBSD: if_ieee1394subr.c,v 1.70 2025/09/21 15:11:52 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Atsushi Onoe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_ieee1394subr.c,v 1.70 2025/09/21 15:11:52 christos Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "opt_inet.h" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/bus.h> 42 #include <sys/device.h> 43 #include <sys/kernel.h> 44 #include <sys/mbuf.h> 45 #include <sys/socket.h> 46 #include <sys/sockio.h> 47 #include <sys/select.h> 48 49 #include <net/if.h> 50 #include <net/if_dl.h> 51 #include <net/if_ieee1394.h> 52 #include <net/if_types.h> 53 #include <net/if_media.h> 54 #include <net/ethertypes.h> 55 #include <net/route.h> 56 57 #include <net/bpf.h> 58 59 #ifdef INET 60 #include <netinet/in.h> 61 #include <netinet/in_var.h> 62 #include <netinet/if_inarp.h> 63 #endif /* INET */ 64 #ifdef INET6 65 #include <netinet/in.h> 66 #include <netinet6/in6_var.h> 67 #include <netinet6/nd6.h> 68 #endif /* INET6 */ 69 70 #include <dev/ieee1394/firewire.h> 71 72 #include <dev/ieee1394/firewirereg.h> 73 #include <dev/ieee1394/iec13213.h> 74 #include <dev/ieee1394/if_fwipvar.h> 75 76 #define IEEE1394_REASS_TIMEOUT 3 /* 3 sec */ 77 78 #define senderr(e) do { error = (e); goto bad; } while(0/*CONSTCOND*/) 79 80 static int ieee1394_output(struct ifnet *, struct mbuf *, 81 const struct sockaddr *, const struct rtentry *); 82 static struct mbuf *ieee1394_reass(struct ifnet *, struct mbuf *, uint16_t); 83 84 static int 85 ieee1394_output(struct ifnet *ifp, struct mbuf *m0, const struct sockaddr *dst, 86 const struct rtentry *rt) 87 { 88 uint16_t etype = 0; 89 struct mbuf *m; 90 int hdrlen, error = 0; 91 struct mbuf *mcopy = NULL; 92 struct ieee1394_hwaddr *hwdst, baddr; 93 const struct ieee1394_hwaddr *myaddr; 94 #ifdef INET 95 struct arphdr *ah; 96 #endif /* INET */ 97 struct m_tag *mtag; 98 int unicast; 99 100 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 101 senderr(ENETDOWN); 102 103 /* 104 * If the queueing discipline needs packet classification, 105 * do it before prepending link headers. 106 */ 107 IFQ_CLASSIFY(&ifp->if_snd, m0, dst->sa_family); 108 109 /* 110 * For unicast, we make a tag to store the lladdr of the 111 * destination. This might not be the first time we have seen 112 * the packet (for instance, the arp code might be trying to 113 * re-send it after receiving an arp reply) so we only 114 * allocate a tag if there isn't one there already. For 115 * multicast, we will eventually use a different tag to store 116 * the channel number. 117 */ 118 unicast = !(m0->m_flags & (M_BCAST | M_MCAST)); 119 if (unicast) { 120 mtag = m_tag_find(m0, MTAG_FIREWIRE_HWADDR); 121 if (!mtag) { 122 mtag = m_tag_get(MTAG_FIREWIRE_HWADDR, 123 sizeof (struct ieee1394_hwaddr), M_NOWAIT); 124 if (!mtag) { 125 error = ENOMEM; 126 goto bad; 127 } 128 m_tag_prepend(m0, mtag); 129 } 130 hwdst = (struct ieee1394_hwaddr *)(mtag + 1); 131 } else { 132 hwdst = &baddr; 133 } 134 135 switch (dst->sa_family) { 136 #ifdef INET 137 case AF_INET: 138 if (unicast && 139 (error = arpresolve(ifp, rt, m0, dst, hwdst, 140 sizeof(*hwdst))) != 0) 141 return error == EWOULDBLOCK ? 0 : error; 142 /* if broadcasting on a simplex interface, loopback a copy */ 143 if ((m0->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 144 mcopy = m_copypacket(m0, M_DONTWAIT); 145 etype = htons(ETHERTYPE_IP); 146 break; 147 case AF_ARP: 148 ah = mtod(m0, struct arphdr *); 149 ah->ar_hrd = htons(ARPHRD_IEEE1394); 150 etype = htons(ETHERTYPE_ARP); 151 break; 152 #endif /* INET */ 153 #ifdef INET6 154 case AF_INET6: 155 #if 0 156 /* 157 * XXX This code was in nd6_storelladdr, which was replaced with 158 * nd6_resolve, but it never be used because nd6_storelladdr was 159 * called only if unicast. Should it be enabled? 160 */ 161 if (m0->m_flags & M_BCAST) 162 memcpy(hwdst->iha_uid, ifp->if_broadcastaddr, 163 MIN(IEEE1394_ADDR_LEN, ifp->if_addrlen)); 164 #endif 165 if (unicast) { 166 error = nd6_resolve(ifp, rt, m0, dst, hwdst->iha_uid, 167 IEEE1394_ADDR_LEN); 168 if (error != 0) 169 return error == EWOULDBLOCK ? 0 : error; 170 } 171 etype = htons(ETHERTYPE_IPV6); 172 break; 173 #endif /* INET6 */ 174 175 case pseudo_AF_HDRCMPLT: 176 case AF_UNSPEC: 177 /* TODO? */ 178 default: 179 rt_unhandled(__func__, ifp, dst); 180 senderr(EAFNOSUPPORT); 181 } 182 183 if (mcopy) 184 looutput(ifp, mcopy, dst, rt); 185 myaddr = (const struct ieee1394_hwaddr *)CLLADDR(ifp->if_sadl); 186 if (ifp->if_bpf) { 187 struct ieee1394_bpfhdr h; 188 if (unicast) 189 memcpy(h.ibh_dhost, hwdst->iha_uid, 8); 190 else 191 memcpy(h.ibh_dhost, 192 ((const struct ieee1394_hwaddr *) 193 ifp->if_broadcastaddr)->iha_uid, 8); 194 memcpy(h.ibh_shost, myaddr->iha_uid, 8); 195 h.ibh_type = etype; 196 bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m0, BPF_D_OUT); 197 } 198 if ((ifp->if_flags & IFF_SIMPLEX) && 199 unicast && 200 memcmp(hwdst, myaddr, IEEE1394_ADDR_LEN) == 0) 201 return looutput(ifp, m0, dst, rt); 202 203 /* 204 * XXX: 205 * The maximum possible rate depends on the topology. 206 * So the determination of maxrec and fragmentation should be 207 * called from the driver after probing the topology map. 208 */ 209 if (unicast) { 210 hdrlen = IEEE1394_GASP_LEN; 211 hwdst->iha_speed = 0; /* XXX */ 212 } else 213 hdrlen = 0; 214 215 if (hwdst->iha_speed > myaddr->iha_speed) 216 hwdst->iha_speed = myaddr->iha_speed; 217 if (hwdst->iha_maxrec > myaddr->iha_maxrec) 218 hwdst->iha_maxrec = myaddr->iha_maxrec; 219 if (hwdst->iha_maxrec > (8 + hwdst->iha_speed)) 220 hwdst->iha_maxrec = 8 + hwdst->iha_speed; 221 if (hwdst->iha_maxrec < 8) 222 hwdst->iha_maxrec = 8; 223 224 m0 = ieee1394_fragment(ifp, m0, (2<<hwdst->iha_maxrec) - hdrlen, etype); 225 if (m0 == NULL) 226 senderr(ENOBUFS); 227 228 while ((m = m0) != NULL) { 229 m0 = m->m_nextpkt; 230 231 error = if_transmit_lock(ifp, m); 232 if (error) { 233 /* mbuf is already freed */ 234 goto bad; 235 } 236 } 237 return 0; 238 239 bad: 240 while (m0 != NULL) { 241 m = m0->m_nextpkt; 242 m_freem(m0); 243 m0 = m; 244 } 245 246 return error; 247 } 248 249 struct mbuf * 250 ieee1394_fragment(struct ifnet *ifp, struct mbuf *m0, int maxsize, 251 uint16_t etype) 252 { 253 struct ieee1394com *ic = (struct ieee1394com *)ifp; 254 int totlen, fraglen, off; 255 struct mbuf *m, **mp; 256 struct ieee1394_fraghdr *ifh; 257 struct ieee1394_unfraghdr *iuh; 258 259 totlen = m0->m_pkthdr.len; 260 if (totlen + sizeof(struct ieee1394_unfraghdr) <= maxsize) { 261 M_PREPEND(m0, sizeof(struct ieee1394_unfraghdr), M_DONTWAIT); 262 if (m0 == NULL) 263 goto bad; 264 iuh = mtod(m0, struct ieee1394_unfraghdr *); 265 iuh->iuh_ft = 0; 266 iuh->iuh_etype = etype; 267 return m0; 268 } 269 270 fraglen = maxsize - sizeof(struct ieee1394_fraghdr); 271 272 M_PREPEND(m0, sizeof(struct ieee1394_fraghdr), M_DONTWAIT); 273 if (m0 == NULL) 274 goto bad; 275 ifh = mtod(m0, struct ieee1394_fraghdr *); 276 ifh->ifh_ft_size = htons(IEEE1394_FT_MORE | (totlen - 1)); 277 ifh->ifh_etype_off = etype; 278 ifh->ifh_dgl = htons(ic->ic_dgl); 279 ifh->ifh_reserved = 0; 280 off = fraglen; 281 mp = &m0->m_nextpkt; 282 while (off < totlen) { 283 if (off + fraglen > totlen) 284 fraglen = totlen - off; 285 MGETHDR(m, M_DONTWAIT, MT_HEADER); 286 if (m == NULL) 287 goto bad; 288 m->m_flags |= m0->m_flags & (M_BCAST|M_MCAST); /* copy bcast */ 289 m_align(m, sizeof(struct ieee1394_fraghdr)); 290 m->m_len = sizeof(struct ieee1394_fraghdr); 291 ifh = mtod(m, struct ieee1394_fraghdr *); 292 ifh->ifh_ft_size = 293 htons(IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE | (totlen - 1)); 294 ifh->ifh_etype_off = htons(off); 295 ifh->ifh_dgl = htons(ic->ic_dgl); 296 ifh->ifh_reserved = 0; 297 m->m_next = m_copym(m0, sizeof(*ifh) + off, fraglen, M_DONTWAIT); 298 if (m->m_next == NULL) { 299 m_freem(m); 300 goto bad; 301 } 302 m->m_pkthdr.len = sizeof(*ifh) + fraglen; 303 off += fraglen; 304 *mp = m; 305 mp = &m->m_nextpkt; 306 } 307 ifh->ifh_ft_size &= ~htons(IEEE1394_FT_MORE); /* last fragment */ 308 m_adj(m0, -(m0->m_pkthdr.len - maxsize)); 309 310 ic->ic_dgl++; 311 return m0; 312 313 bad: 314 while ((m = m0) != NULL) { 315 m0 = m->m_nextpkt; 316 m->m_nextpkt = NULL; 317 m_freem(m); 318 } 319 return NULL; 320 } 321 322 void 323 ieee1394_input(struct ifnet *ifp, struct mbuf *m, uint16_t src) 324 { 325 pktqueue_t *pktq = NULL; 326 uint16_t etype; 327 struct ieee1394_unfraghdr *iuh; 328 329 if ((ifp->if_flags & IFF_UP) == 0) { 330 m_freem(m); 331 return; 332 } 333 if (m->m_len < sizeof(*iuh)) { 334 if ((m = m_pullup(m, sizeof(*iuh))) == NULL) 335 return; 336 } 337 338 iuh = mtod(m, struct ieee1394_unfraghdr *); 339 340 if (ntohs(iuh->iuh_ft) & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE)) { 341 if ((m = ieee1394_reass(ifp, m, src)) == NULL) 342 return; 343 iuh = mtod(m, struct ieee1394_unfraghdr *); 344 } 345 etype = ntohs(iuh->iuh_etype); 346 347 /* strip off the ieee1394 header */ 348 m_adj(m, sizeof(*iuh)); 349 if (ifp->if_bpf) { 350 struct ieee1394_bpfhdr h; 351 struct m_tag *mtag; 352 const struct ieee1394_hwaddr *myaddr; 353 354 mtag = m_tag_find(m, MTAG_FIREWIRE_SENDER_EUID); 355 if (mtag) 356 memcpy(h.ibh_shost, mtag + 1, 8); 357 else 358 memset(h.ibh_shost, 0, 8); 359 if (m->m_flags & M_BCAST) 360 memcpy(h.ibh_dhost, 361 ((const struct ieee1394_hwaddr *) 362 ifp->if_broadcastaddr)->iha_uid, 8); 363 else { 364 myaddr = 365 (const struct ieee1394_hwaddr *)CLLADDR(ifp->if_sadl); 366 memcpy(h.ibh_dhost, myaddr->iha_uid, 8); 367 } 368 h.ibh_type = htons(etype); 369 bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m, BPF_D_IN); 370 } 371 372 switch (etype) { 373 #ifdef INET 374 case ETHERTYPE_IP: 375 pktq = ip_pktq; 376 break; 377 378 case ETHERTYPE_ARP: 379 pktq = arp_pktq; 380 break; 381 #endif /* INET */ 382 383 #ifdef INET6 384 case ETHERTYPE_IPV6: 385 pktq = ip6_pktq; 386 break; 387 #endif /* INET6 */ 388 389 default: 390 m_freem(m); 391 return; 392 } 393 394 KASSERT(pktq != NULL); 395 if (__predict_false(!pktq_enqueue(pktq, m, 0))) { 396 m_freem(m); 397 } 398 } 399 400 static struct mbuf * 401 ieee1394_reass(struct ifnet *ifp, struct mbuf *m0, uint16_t src) 402 { 403 struct ieee1394com *ic = (struct ieee1394com *)ifp; 404 struct ieee1394_fraghdr *ifh; 405 struct ieee1394_unfraghdr *iuh; 406 struct ieee1394_reassq *rq; 407 struct ieee1394_reass_pkt *rp, *trp, *nrp = NULL; 408 int len; 409 uint16_t etype, off, ftype, size, dgl; 410 uint32_t id; 411 412 if (m0->m_len < sizeof(*ifh)) { 413 if ((m0 = m_pullup(m0, sizeof(*ifh))) == NULL) 414 return NULL; 415 } 416 ifh = mtod(m0, struct ieee1394_fraghdr *); 417 m_adj(m0, sizeof(*ifh)); 418 size = ntohs(ifh->ifh_ft_size); 419 ftype = size & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE); 420 size = (size & ~ftype) + 1; 421 dgl = ntohs(ifh->ifh_dgl); 422 len = m0->m_pkthdr.len; 423 id = dgl | (src << 16); 424 if (ftype & IEEE1394_FT_SUBSEQ) { 425 m_remove_pkthdr(m0); 426 etype = 0; 427 off = ntohs(ifh->ifh_etype_off); 428 } else { 429 etype = ifh->ifh_etype_off; 430 off = 0; 431 } 432 433 for (rq = LIST_FIRST(&ic->ic_reassq); ; rq = LIST_NEXT(rq, rq_node)) { 434 if (rq == NULL) { 435 /* 436 * Create a new reassemble queue head for the node. 437 */ 438 rq = malloc(sizeof(*rq), M_FTABLE, M_NOWAIT); 439 if (rq == NULL) { 440 m_freem(m0); 441 return NULL; 442 } 443 rq->fr_id = id; 444 LIST_INIT(&rq->rq_pkt); 445 LIST_INSERT_HEAD(&ic->ic_reassq, rq, rq_node); 446 break; 447 } 448 if (rq->fr_id == id) 449 break; 450 } 451 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 452 nrp = LIST_NEXT(rp, rp_next); 453 if (rp->rp_dgl != dgl) 454 continue; 455 /* 456 * sanity check: 457 * datagram size must be same for all fragments, and 458 * no overlap is allowed. 459 */ 460 if (rp->rp_size != size || 461 (off < rp->rp_off + rp->rp_len && off + len > rp->rp_off)) { 462 /* 463 * This happens probably due to wrapping dgl value. 464 * Destroy all previously received fragment and 465 * enqueue current fragment. 466 */ 467 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; 468 rp = nrp) { 469 nrp = LIST_NEXT(rp, rp_next); 470 if (rp->rp_dgl == dgl) { 471 LIST_REMOVE(rp, rp_next); 472 m_freem(rp->rp_m); 473 free(rp, M_FTABLE); 474 } 475 } 476 break; 477 } 478 if (rp->rp_off + rp->rp_len == off) { 479 /* 480 * All the subsequent fragments received in sequence 481 * come here. 482 * Concatinate mbuf to previous one instead of 483 * allocating new reassemble queue structure, 484 * and try to merge more with the subsequent fragment 485 * in the queue. 486 */ 487 m_cat(rp->rp_m, m0); 488 rp->rp_len += len; 489 while (rp->rp_off + rp->rp_len < size && 490 nrp != NULL && nrp->rp_dgl == dgl && 491 nrp->rp_off == rp->rp_off + rp->rp_len) { 492 LIST_REMOVE(nrp, rp_next); 493 m_cat(rp->rp_m, nrp->rp_m); 494 rp->rp_len += nrp->rp_len; 495 free(nrp, M_FTABLE); 496 nrp = LIST_NEXT(rp, rp_next); 497 } 498 m0 = NULL; /* mark merged */ 499 break; 500 } 501 if (off + m0->m_pkthdr.len == rp->rp_off) { 502 m_cat(m0, rp->rp_m); 503 rp->rp_m = m0; 504 rp->rp_off = off; 505 rp->rp_etype = etype; /* over writing trust etype */ 506 rp->rp_len += len; 507 m0 = NULL; /* mark merged */ 508 break; 509 } 510 if (rp->rp_off > off) { 511 /* insert before rp */ 512 nrp = rp; 513 break; 514 } 515 if (nrp == NULL || nrp->rp_dgl != dgl) { 516 /* insert after rp */ 517 nrp = NULL; 518 break; 519 } 520 } 521 if (m0 == NULL) { 522 if (rp->rp_off != 0 || rp->rp_len != size) 523 return NULL; 524 /* fragment done */ 525 LIST_REMOVE(rp, rp_next); 526 m0 = rp->rp_m; 527 m0->m_pkthdr.len = rp->rp_len; 528 M_PREPEND(m0, sizeof(*iuh), M_DONTWAIT); 529 if (m0 != NULL) { 530 iuh = mtod(m0, struct ieee1394_unfraghdr *); 531 iuh->iuh_ft = 0; 532 iuh->iuh_etype = rp->rp_etype; 533 } 534 free(rp, M_FTABLE); 535 return m0; 536 } 537 538 /* 539 * New fragment received. Allocate reassemble queue structure. 540 */ 541 trp = malloc(sizeof(*trp), M_FTABLE, M_NOWAIT); 542 if (trp == NULL) { 543 m_freem(m0); 544 return NULL; 545 } 546 trp->rp_m = m0; 547 trp->rp_size = size; 548 trp->rp_etype = etype; /* valid only if off==0 */ 549 trp->rp_off = off; 550 trp->rp_dgl = dgl; 551 trp->rp_len = len; 552 trp->rp_ttl = IEEE1394_REASS_TIMEOUT; 553 if (trp->rp_ttl <= ifp->if_timer) 554 trp->rp_ttl = ifp->if_timer + 1; 555 556 if (rp == NULL) { 557 /* first fragment for the dgl */ 558 LIST_INSERT_HEAD(&rq->rq_pkt, trp, rp_next); 559 } else if (nrp == NULL) { 560 /* no next fragment for the dgl */ 561 LIST_INSERT_AFTER(rp, trp, rp_next); 562 } else { 563 /* there is a hole */ 564 LIST_INSERT_BEFORE(nrp, trp, rp_next); 565 } 566 return NULL; 567 } 568 569 void 570 ieee1394_drain(struct ifnet *ifp) 571 { 572 struct ieee1394com *ic = (struct ieee1394com *)ifp; 573 struct ieee1394_reassq *rq; 574 struct ieee1394_reass_pkt *rp; 575 576 while ((rq = LIST_FIRST(&ic->ic_reassq)) != NULL) { 577 LIST_REMOVE(rq, rq_node); 578 while ((rp = LIST_FIRST(&rq->rq_pkt)) != NULL) { 579 LIST_REMOVE(rp, rp_next); 580 m_freem(rp->rp_m); 581 free(rp, M_FTABLE); 582 } 583 free(rq, M_FTABLE); 584 } 585 } 586 587 void 588 ieee1394_watchdog(struct ifnet *ifp) 589 { 590 struct ieee1394com *ic = (struct ieee1394com *)ifp; 591 struct ieee1394_reassq *rq; 592 struct ieee1394_reass_pkt *rp, *nrp; 593 int dec; 594 595 dec = (ifp->if_timer > 0) ? ifp->if_timer : 1; 596 for (rq = LIST_FIRST(&ic->ic_reassq); rq != NULL; 597 rq = LIST_NEXT(rq, rq_node)) { 598 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 599 nrp = LIST_NEXT(rp, rp_next); 600 if (rp->rp_ttl >= dec) 601 rp->rp_ttl -= dec; 602 else { 603 LIST_REMOVE(rp, rp_next); 604 m_freem(rp->rp_m); 605 free(rp, M_FTABLE); 606 } 607 } 608 } 609 } 610 611 const char * 612 ieee1394_sprintf(const uint8_t *laddr) 613 { 614 static char buf[3*8]; 615 616 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 617 laddr[0], laddr[1], laddr[2], laddr[3], 618 laddr[4], laddr[5], laddr[6], laddr[7]); 619 return buf; 620 } 621 622 void 623 ieee1394_ifattach(struct ifnet *ifp, const struct ieee1394_hwaddr *hwaddr) 624 { 625 struct ieee1394_hwaddr *baddr; 626 struct ieee1394com *ic = (struct ieee1394com *)ifp; 627 628 ifp->if_type = IFT_IEEE1394; 629 ifp->if_hdrlen = sizeof(struct ieee1394_header); 630 ifp->if_dlt = DLT_EN10MB; /* XXX */ 631 ifp->if_mtu = IEEE1394MTU; 632 ifp->if_output = ieee1394_output; 633 ifp->if_drain = ieee1394_drain; 634 ifp->if_watchdog = ieee1394_watchdog; 635 ifp->if_timer = 1; 636 if (ifp->if_baudrate == 0) 637 ifp->if_baudrate = IF_Mbps(100); 638 639 if_set_sadl(ifp, hwaddr, sizeof(struct ieee1394_hwaddr), true); 640 641 baddr = malloc(ifp->if_addrlen, M_DEVBUF, M_WAITOK); 642 memset(baddr->iha_uid, 0xff, IEEE1394_ADDR_LEN); 643 baddr->iha_speed = 0; /*XXX: how to determine the speed for bcast? */ 644 baddr->iha_maxrec = 512 << baddr->iha_speed; 645 memset(baddr->iha_offset, 0, sizeof(baddr->iha_offset)); 646 ifp->if_broadcastaddr = (uint8_t *)baddr; 647 LIST_INIT(&ic->ic_reassq); 648 bpf_attach(ifp, DLT_APPLE_IP_OVER_IEEE1394, 649 sizeof(struct ieee1394_hwaddr)); 650 } 651 652 void 653 ieee1394_ifdetach(struct ifnet *ifp) 654 { 655 ieee1394_drain(ifp); 656 bpf_detach(ifp); 657 free(__UNCONST(ifp->if_broadcastaddr), M_DEVBUF); 658 ifp->if_broadcastaddr = NULL; 659 } 660 661 int 662 ieee1394_ioctl(struct ifnet *ifp, u_long cmd, void *data) 663 { 664 struct ifreq *ifr = (struct ifreq *)data; 665 struct ifaddr *ifa = (struct ifaddr *)data; 666 int error = 0; 667 668 switch (cmd) { 669 case SIOCINITIFADDR: 670 ifp->if_flags |= IFF_UP; 671 switch (ifa->ifa_addr->sa_family) { 672 #ifdef INET 673 case AF_INET: 674 if ((error = if_init(ifp)) != 0) 675 break; 676 arp_ifinit(ifp, ifa); 677 break; 678 #endif /* INET */ 679 default: 680 error = if_init(ifp); 681 break; 682 } 683 break; 684 685 case SIOCSIFMTU: 686 if (ifr->ifr_mtu > IEEE1394MTU) 687 error = EINVAL; 688 else if ((error = ifioctl_common(ifp, cmd, data)) == ENETRESET) 689 error = 0; 690 break; 691 692 default: 693 error = ifioctl_common(ifp, cmd, data); 694 break; 695 } 696 697 return error; 698 } 699
Indexes created Mon Sep 22 21:09:42 GMT 2025