if_ieee1394subr.c revision 1.26
1 /* $NetBSD: if_ieee1394subr.c,v 1.26 2004/08/19 20:58:24 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: if_ieee1394subr.c,v 1.26 2004/08/19 20:58:24 christos Exp $"); 41 42 #include "opt_inet.h" 43 #include "bpfilter.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/socket.h> 48 #include <sys/sockio.h> 49 #include <sys/kernel.h> 50 #include <sys/mbuf.h> 51 #include <sys/device.h> 52 53 #include <net/if.h> 54 #include <net/if_dl.h> 55 #include <net/if_ieee1394.h> 56 #include <net/if_types.h> 57 #include <net/if_media.h> 58 #include <net/ethertypes.h> 59 #include <net/netisr.h> 60 #include <net/route.h> 61 62 #if NBPFILTER > 0 63 #include <net/bpf.h> 64 #endif 65 66 #ifdef INET 67 #include <netinet/in.h> 68 #include <netinet/in_var.h> 69 #include <netinet/if_inarp.h> 70 #endif /* INET */ 71 #ifdef INET6 72 #include <netinet/in.h> 73 #include <netinet6/in6_var.h> 74 #include <netinet6/nd6.h> 75 #endif /* INET6 */ 76 77 #define IEEE1394_REASS_TIMEOUT 3 /* 3 sec */ 78 79 #define senderr(e) do { error = (e); goto bad; } while(0/*CONSTCOND*/) 80 81 static int ieee1394_output(struct ifnet *, struct mbuf *, struct sockaddr *, 82 struct rtentry *); 83 static void ieee1394_input(struct ifnet *, struct mbuf *); 84 static struct mbuf *ieee1394_reass(struct ifnet *, struct mbuf *); 85 86 static int 87 ieee1394_output(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst, 88 struct rtentry *rt0) 89 { 90 u_int16_t etype = 0; 91 struct mbuf *m; 92 int s, hdrlen, error = 0; 93 struct rtentry *rt; 94 struct mbuf *mcopy = NULL; 95 struct ieee1394_hwaddr hwdst, *myaddr; 96 ALTQ_DECL(struct altq_pktattr pktattr;) 97 #ifdef INET 98 struct arphdr *ah; 99 #endif /* INET */ 100 101 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 102 senderr(ENETDOWN); 103 if ((rt = rt0) != NULL) { 104 if ((rt->rt_flags & RTF_UP) == 0) { 105 if ((rt0 = rt = rtalloc1(dst, 1)) != NULL) { 106 rt->rt_refcnt--; 107 if (rt->rt_ifp != ifp) 108 return (*rt->rt_ifp->if_output) 109 (ifp, m0, dst, rt); 110 } else 111 senderr(EHOSTUNREACH); 112 } 113 if (rt->rt_flags & RTF_GATEWAY) { 114 if (rt->rt_gwroute == NULL) 115 goto lookup; 116 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { 117 rtfree(rt); 118 rt = rt0; 119 lookup: 120 rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1); 121 if ((rt = rt->rt_gwroute) == NULL) 122 senderr(EHOSTUNREACH); 123 /* the "G" test below also prevents rt == rt0 */ 124 if ((rt->rt_flags & RTF_GATEWAY) || 125 (rt->rt_ifp != ifp)) { 126 rt->rt_refcnt--; 127 rt0->rt_gwroute = NULL; 128 senderr(EHOSTUNREACH); 129 } 130 } 131 } 132 if (rt->rt_flags & RTF_REJECT) 133 if (rt->rt_rmx.rmx_expire == 0 || 134 time.tv_sec < rt->rt_rmx.rmx_expire) 135 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); 136 } 137 138 /* 139 * If the queueing discipline needs packet classification, 140 * do it before prepending link headers. 141 */ 142 IFQ_CLASSIFY(&ifp->if_snd, m0, dst->sa_family, &pktattr); 143 144 switch (dst->sa_family) { 145 #ifdef INET 146 case AF_INET: 147 if (m0->m_flags & (M_BCAST | M_MCAST)) 148 memcpy(&hwdst, ifp->if_broadcastaddr, sizeof(hwdst)); 149 else if (!arpresolve(ifp, rt, m0, dst, (u_char *)&hwdst)) 150 return 0; /* if not yet resolved */ 151 /* if broadcasting on a simplex interface, loopback a copy */ 152 if ((m0->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 153 mcopy = m_copy(m0, 0, M_COPYALL); 154 etype = htons(ETHERTYPE_IP); 155 break; 156 case AF_ARP: 157 ah = mtod(m0, struct arphdr *); 158 memcpy(&hwdst, ifp->if_broadcastaddr, sizeof(hwdst)); 159 ah->ar_hrd = htons(ARPHRD_IEEE1394); 160 etype = htons(ETHERTYPE_ARP); 161 break; 162 #endif /* INET */ 163 #ifdef INET6 164 case AF_INET6: 165 if (m0->m_flags & M_MCAST) 166 memcpy(&hwdst, ifp->if_broadcastaddr, sizeof(hwdst)); 167 else if (!nd6_storelladdr(ifp, rt, m0, dst, (u_char *)&hwdst)) { 168 /* something bad happened */ 169 return 0; 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 printf("%s: can't handle af%d\n", ifp->if_xname, 180 dst->sa_family); 181 senderr(EAFNOSUPPORT); 182 break; 183 } 184 185 if (mcopy) 186 looutput(ifp, mcopy, dst, rt); 187 #if NBPFILTER > 0 188 /* XXX: emulate DLT_EN10MB */ 189 if (ifp->if_bpf) 190 bpf_mtap_et(ifp->if_bpf, etype, m); 191 #endif 192 myaddr = (struct ieee1394_hwaddr *)LLADDR(ifp->if_sadl); 193 if ((ifp->if_flags & IFF_SIMPLEX) && 194 memcmp(&hwdst, myaddr, IEEE1394_ADDR_LEN) == 0) 195 return looutput(ifp, m0, dst, rt); 196 197 /* 198 * XXX: 199 * The maximum possible rate depends on the topology. 200 * So the determination of maxrec and fragmentation should be 201 * called from the driver after probing the topology map. 202 */ 203 if (m0->m_flags & (M_BCAST | M_MCAST)) { 204 hdrlen = IEEE1394_GASP_LEN; 205 hwdst.iha_speed = 0; /* XXX */ 206 } else 207 hdrlen = 0; 208 if (hwdst.iha_speed > myaddr->iha_speed) 209 hwdst.iha_speed = myaddr->iha_speed; 210 if (hwdst.iha_maxrec > myaddr->iha_maxrec) 211 hwdst.iha_maxrec = myaddr->iha_maxrec; 212 if (hwdst.iha_maxrec > (8 + hwdst.iha_speed)) 213 hwdst.iha_maxrec = 8 + hwdst.iha_speed; 214 if (hwdst.iha_maxrec < 8) 215 hwdst.iha_maxrec = 8; 216 217 m0 = ieee1394_fragment(ifp, m0, (2<<hwdst.iha_maxrec) - hdrlen, etype); 218 if (m0 == NULL) 219 senderr(ENOBUFS); 220 221 s = splnet(); 222 ifp->if_obytes += m0->m_pkthdr.len; 223 if (m0->m_flags & M_MCAST) 224 ifp->if_omcasts++; 225 while ((m = m0) != NULL) { 226 m0 = m->m_nextpkt; 227 M_PREPEND(m, sizeof(struct ieee1394_header), M_DONTWAIT); 228 if (m == NULL) { 229 splx(s); 230 senderr(ENOBUFS); 231 } 232 memcpy(mtod(m, caddr_t), &hwdst, sizeof(hwdst)); 233 IFQ_ENQUEUE(&ifp->if_snd, m, &pktattr, error); 234 if (error) { 235 /* mbuf is already freed */ 236 splx(s); 237 goto bad; 238 } 239 } 240 if ((ifp->if_flags & IFF_OACTIVE) == 0) 241 (*ifp->if_start)(ifp); 242 splx(s); 243 return 0; 244 245 bad: 246 while (m0 != NULL) { 247 m = m0->m_nextpkt; 248 m_freem(m0); 249 m0 = m; 250 } 251 252 return error; 253 } 254 255 struct mbuf * 256 ieee1394_fragment(struct ifnet *ifp, struct mbuf *m0, int maxsize, 257 u_int16_t etype) 258 { 259 struct ieee1394com *ic = (struct ieee1394com *)ifp; 260 int totlen, fraglen, off; 261 struct mbuf *m, **mp; 262 struct ieee1394_fraghdr *ifh; 263 struct ieee1394_unfraghdr *iuh; 264 265 totlen = m0->m_pkthdr.len; 266 if (totlen + sizeof(struct ieee1394_unfraghdr) <= maxsize) { 267 M_PREPEND(m0, sizeof(struct ieee1394_unfraghdr), M_DONTWAIT); 268 if (m0 == NULL) 269 goto bad; 270 iuh = mtod(m0, struct ieee1394_unfraghdr *); 271 iuh->iuh_ft = 0; 272 iuh->iuh_etype = etype; 273 return m0; 274 } 275 276 fraglen = maxsize - sizeof(struct ieee1394_fraghdr); 277 278 M_PREPEND(m0, sizeof(struct ieee1394_fraghdr), M_DONTWAIT); 279 if (m0 == NULL) 280 goto bad; 281 ifh = mtod(m0, struct ieee1394_fraghdr *); 282 ifh->ifh_ft_size = htons(IEEE1394_FT_MORE | (totlen - 1)); 283 ifh->ifh_etype_off = etype; 284 ifh->ifh_dgl = htons(ic->ic_dgl); 285 ifh->ifh_reserved = 0; 286 off = fraglen; 287 mp = &m0->m_nextpkt; 288 while (off < totlen) { 289 if (off + fraglen > totlen) 290 fraglen = totlen - off; 291 MGETHDR(m, M_DONTWAIT, MT_HEADER); 292 if (m == NULL) 293 goto bad; 294 m->m_flags |= m0->m_flags & (M_BCAST|M_MCAST); /* copy bcast */ 295 MH_ALIGN(m, sizeof(struct ieee1394_fraghdr)); 296 m->m_len = sizeof(struct ieee1394_fraghdr); 297 ifh = mtod(m, struct ieee1394_fraghdr *); 298 ifh->ifh_ft_size = 299 htons(IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE | (totlen - 1)); 300 ifh->ifh_etype_off = htons(off); 301 ifh->ifh_dgl = htons(ic->ic_dgl); 302 ifh->ifh_reserved = 0; 303 m->m_next = m_copy(m0, sizeof(*ifh) + off, fraglen); 304 if (m->m_next == NULL) 305 goto bad; 306 m->m_pkthdr.len = sizeof(*ifh) + fraglen; 307 off += fraglen; 308 *mp = m; 309 mp = &m->m_nextpkt; 310 } 311 ifh->ifh_ft_size &= ~htons(IEEE1394_FT_MORE); /* last fragment */ 312 m_adj(m0, -(m0->m_pkthdr.len - maxsize)); 313 314 ic->ic_dgl++; 315 return m0; 316 317 bad: 318 while ((m = m0) != NULL) { 319 m0 = m->m_nextpkt; 320 m->m_nextpkt = NULL; 321 m_freem(m); 322 } 323 return NULL; 324 } 325 326 static void 327 ieee1394_input(struct ifnet *ifp, struct mbuf *m) 328 { 329 struct ifqueue *inq; 330 u_int16_t etype; 331 int s; 332 struct ieee1394_header *ih; 333 struct ieee1394_unfraghdr *iuh; 334 335 if ((ifp->if_flags & IFF_UP) == 0) { 336 m_freem(m); 337 return; 338 } 339 if (m->m_len < sizeof(*ih) + sizeof(*iuh)) { 340 if ((m = m_pullup(m, sizeof(*ih) + sizeof(*iuh))) == NULL) 341 return; 342 } 343 344 ih = mtod(m, struct ieee1394_header *); 345 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 346 347 if (ntohs(iuh->iuh_ft) & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE)) { 348 if ((m = ieee1394_reass(ifp, m)) == NULL) 349 return; 350 ih = mtod(m, struct ieee1394_header *); 351 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 352 } 353 etype = ntohs(iuh->iuh_etype); 354 355 /* strip off the ieee1394 header */ 356 m_adj(m, sizeof(*ih) + sizeof(*iuh)); 357 #if NBPFILTER > 0 358 /* XXX: emulate DLT_EN10MB */ 359 if (ifp->if_bpf) 360 bpf_mtap_et(ifp->if_bpf, iuh->iuh_etype, m); 361 #endif 362 363 switch (etype) { 364 #ifdef INET 365 case ETHERTYPE_IP: 366 schednetisr(NETISR_IP); 367 inq = &ipintrq; 368 break; 369 370 case ETHERTYPE_ARP: 371 schednetisr(NETISR_ARP); 372 inq = &arpintrq; 373 break; 374 #endif /* INET */ 375 376 #ifdef INET6 377 case ETHERTYPE_IPV6: 378 schednetisr(NETISR_IPV6); 379 inq = &ip6intrq; 380 break; 381 #endif /* INET6 */ 382 383 default: 384 m_freem(m); 385 return; 386 } 387 388 s = splnet(); 389 if (IF_QFULL(inq)) { 390 IF_DROP(inq); 391 m_freem(m); 392 } else 393 IF_ENQUEUE(inq, m); 394 splx(s); 395 } 396 397 static struct mbuf * 398 ieee1394_reass(struct ifnet *ifp, struct mbuf *m0) 399 { 400 struct ieee1394com *ic = (struct ieee1394com *)ifp; 401 struct ieee1394_header *ih; 402 struct ieee1394_fraghdr *ifh; 403 struct ieee1394_unfraghdr *iuh; 404 struct ieee1394_reassq *rq; 405 struct ieee1394_reass_pkt *rp, *trp, *nrp = NULL; 406 int len; 407 u_int16_t off, ftype, size, dgl; 408 409 if (m0->m_len < sizeof(*ih) + sizeof(*ifh)) { 410 if ((m0 = m_pullup(m0, sizeof(*ih) + sizeof(*ifh))) == NULL) 411 return NULL; 412 } 413 ih = mtod(m0, struct ieee1394_header *); 414 ifh = (struct ieee1394_fraghdr *)&ih[1]; 415 m_adj(m0, sizeof(*ih) + sizeof(*ifh)); 416 size = ntohs(ifh->ifh_ft_size); 417 ftype = size & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE); 418 size = (size & ~ftype) + 1; 419 dgl = ifh->ifh_dgl; 420 len = m0->m_pkthdr.len; 421 if (ftype & IEEE1394_FT_SUBSEQ) { 422 m_tag_delete_chain(m0, NULL); 423 m0->m_flags &= ~M_PKTHDR; 424 off = ntohs(ifh->ifh_etype_off); 425 } else 426 off = 0; 427 428 for (rq = LIST_FIRST(&ic->ic_reassq); ; rq = LIST_NEXT(rq, rq_node)) { 429 if (rq == NULL) { 430 /* 431 * Create a new reassemble queue head for the node. 432 */ 433 rq = malloc(sizeof(*rq), M_FTABLE, M_NOWAIT); 434 if (rq == NULL) { 435 m_freem(m0); 436 return NULL; 437 } 438 memcpy(rq->rq_uid, ih->ih_uid, IEEE1394_ADDR_LEN); 439 LIST_INIT(&rq->rq_pkt); 440 LIST_INSERT_HEAD(&ic->ic_reassq, rq, rq_node); 441 break; 442 } 443 if (memcmp(rq->rq_uid, ih->ih_uid, IEEE1394_ADDR_LEN) == 0) 444 break; 445 } 446 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 447 nrp = LIST_NEXT(rp, rp_next); 448 if (rp->rp_dgl != dgl) 449 continue; 450 /* 451 * sanity check: 452 * datagram size must be same for all fragments, and 453 * no overlap is allowed. 454 */ 455 if (rp->rp_size != size || 456 (off < rp->rp_off + rp->rp_len && off + len > rp->rp_off)) { 457 /* 458 * This happens probably due to wrapping dgl value. 459 * Destroy all previously received fragment and 460 * enqueue current fragment. 461 */ 462 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; 463 rp = nrp) { 464 nrp = LIST_NEXT(rp, rp_next); 465 if (rp->rp_dgl == dgl) { 466 LIST_REMOVE(rp, rp_next); 467 m_freem(rp->rp_m); 468 free(rp, M_FTABLE); 469 } 470 } 471 break; 472 } 473 if (rp->rp_off + rp->rp_len == off) { 474 /* 475 * All the subsequent fragments received in sequence 476 * come here. 477 * Concatinate mbuf to previous one instead of 478 * allocating new reassemble queue structure, 479 * and try to merge more with the subsequent fragment 480 * in the queue. 481 */ 482 m_cat(rp->rp_m, m0); 483 rp->rp_len += len; 484 while (rp->rp_off + rp->rp_len < size && 485 nrp != NULL && nrp->rp_dgl == dgl && 486 nrp->rp_off == rp->rp_off + rp->rp_len) { 487 LIST_REMOVE(nrp, rp_next); 488 m_cat(rp->rp_m, nrp->rp_m); 489 rp->rp_len += nrp->rp_len; 490 free(nrp, M_FTABLE); 491 nrp = LIST_NEXT(rp, rp_next); 492 } 493 m0 = NULL; /* mark merged */ 494 break; 495 } 496 if (off + m0->m_pkthdr.len == rp->rp_off) { 497 m_cat(m0, rp->rp_m); 498 rp->rp_m = m0; 499 rp->rp_off = off; 500 rp->rp_len += len; 501 m0 = NULL; /* mark merged */ 502 break; 503 } 504 if (rp->rp_off > off) { 505 /* insert before rp */ 506 nrp = rp; 507 break; 508 } 509 if (nrp == NULL || nrp->rp_dgl != dgl) { 510 /* insert after rp */ 511 nrp = NULL; 512 break; 513 } 514 } 515 if (m0 == NULL) { 516 if (rp->rp_off != 0 || rp->rp_len != size) 517 return NULL; 518 /* fragment done */ 519 LIST_REMOVE(rp, rp_next); 520 m0 = rp->rp_m; 521 m0->m_pkthdr.len = rp->rp_len; 522 M_PREPEND(m0, sizeof(*ih) + sizeof(*iuh), M_DONTWAIT); 523 if (m0 != NULL) { 524 ih = mtod(m0, struct ieee1394_header *); 525 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 526 memcpy(ih, &rp->rp_hdr, sizeof(*ih)); 527 iuh->iuh_ft = 0; 528 iuh->iuh_etype = rp->rp_etype; 529 } 530 free(rp, M_FTABLE); 531 return m0; 532 } 533 534 /* 535 * New fragment received. Allocate reassemble queue structure. 536 */ 537 trp = malloc(sizeof(*trp), M_FTABLE, M_NOWAIT); 538 if (trp == NULL) { 539 m_freem(m0); 540 return NULL; 541 } 542 trp->rp_m = m0; 543 memcpy(&trp->rp_hdr, ih, sizeof(*ih)); 544 trp->rp_size = size; 545 trp->rp_etype = ifh->ifh_etype_off; /* valid only if off==0 */ 546 trp->rp_off = off; 547 trp->rp_dgl = dgl; 548 trp->rp_len = len; 549 trp->rp_ttl = IEEE1394_REASS_TIMEOUT; 550 if (trp->rp_ttl <= ifp->if_timer) 551 trp->rp_ttl = ifp->if_timer + 1; 552 553 if (rp == NULL) { 554 /* first fragment for the dgl */ 555 LIST_INSERT_HEAD(&rq->rq_pkt, trp, rp_next); 556 } else if (nrp == NULL) { 557 /* no next fragment for the dgl */ 558 LIST_INSERT_AFTER(rp, trp, rp_next); 559 } else { 560 /* there is a hole */ 561 LIST_INSERT_BEFORE(nrp, trp, rp_next); 562 } 563 return NULL; 564 } 565 566 void 567 ieee1394_drain(struct ifnet *ifp) 568 { 569 struct ieee1394com *ic = (struct ieee1394com *)ifp; 570 struct ieee1394_reassq *rq; 571 struct ieee1394_reass_pkt *rp; 572 573 while ((rq = LIST_FIRST(&ic->ic_reassq)) != NULL) { 574 LIST_REMOVE(rq, rq_node); 575 while ((rp = LIST_FIRST(&rq->rq_pkt)) != NULL) { 576 LIST_REMOVE(rp, rp_next); 577 m_freem(rp->rp_m); 578 free(rp, M_FTABLE); 579 } 580 free(rq, M_FTABLE); 581 } 582 } 583 584 void 585 ieee1394_watchdog(struct ifnet *ifp) 586 { 587 struct ieee1394com *ic = (struct ieee1394com *)ifp; 588 struct ieee1394_reassq *rq; 589 struct ieee1394_reass_pkt *rp, *nrp; 590 int dec; 591 592 dec = (ifp->if_timer > 0) ? ifp->if_timer : 1; 593 for (rq = LIST_FIRST(&ic->ic_reassq); rq != NULL; 594 rq = LIST_NEXT(rq, rq_node)) { 595 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 596 nrp = LIST_NEXT(rp, rp_next); 597 if (rp->rp_ttl >= dec) 598 rp->rp_ttl -= dec; 599 else { 600 LIST_REMOVE(rp, rp_next); 601 m_freem(rp->rp_m); 602 free(rp, M_FTABLE); 603 } 604 } 605 } 606 } 607 608 const char * 609 ieee1394_sprintf(const u_int8_t *laddr) 610 { 611 static char buf[3*8]; 612 613 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 614 laddr[0], laddr[1], laddr[2], laddr[3], 615 laddr[4], laddr[5], laddr[6], laddr[7]); 616 return buf; 617 } 618 619 void 620 ieee1394_ifattach(struct ifnet *ifp, const struct ieee1394_hwaddr *hwaddr) 621 { 622 struct ieee1394_hwaddr *baddr; 623 struct ieee1394com *ic = (struct ieee1394com *)ifp; 624 625 ifp->if_type = IFT_IEEE1394; 626 ifp->if_addrlen = sizeof(struct ieee1394_hwaddr); 627 ifp->if_hdrlen = sizeof(struct ieee1394_header); 628 ifp->if_dlt = DLT_EN10MB; /* XXX */ 629 ifp->if_mtu = IEEE1394MTU; 630 ifp->if_output = ieee1394_output; 631 ifp->if_input = ieee1394_input; 632 ifp->if_drain = ieee1394_drain; 633 ifp->if_watchdog = ieee1394_watchdog; 634 ifp->if_timer = 1; 635 if (ifp->if_baudrate == 0) 636 ifp->if_baudrate = IF_Mbps(100); 637 638 if_alloc_sadl(ifp); 639 memcpy(LLADDR(ifp->if_sadl), hwaddr, ifp->if_addrlen); 640 641 ifp->if_broadcastaddr = malloc(ifp->if_addrlen, M_DEVBUF, M_WAITOK); 642 baddr = (struct ieee1394_hwaddr *)ifp->if_broadcastaddr; 643 memset(baddr->iha_uid, 0xff, IEEE1394_ADDR_LEN); 644 baddr->iha_speed = 0; /*XXX: how to determine the speed for bcast? */ 645 baddr->iha_maxrec = 512 << baddr->iha_speed; 646 memset(baddr->iha_offset, 0, sizeof(baddr->iha_offset)); 647 LIST_INIT(&ic->ic_reassq); 648 #if NBPFILTER > 0 649 bpfattach(ifp, DLT_EN10MB, 14); /* XXX */ 650 #endif 651 } 652 653 void 654 ieee1394_ifdetach(struct ifnet *ifp) 655 { 656 ieee1394_drain(ifp); 657 #if NBPFILTER > 0 658 bpfdetach(ifp); 659 #endif 660 free(ifp->if_broadcastaddr, M_DEVBUF); 661 ifp->if_broadcastaddr = NULL; 662 #if 0 /* done in if_detach() */ 663 if_free_sadl(ifp); 664 #endif 665 } 666 667 int 668 ieee1394_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 669 { 670 struct ifreq *ifr = (struct ifreq *)data; 671 struct ifaddr *ifa = (struct ifaddr *)data; 672 int error = 0; 673 #if __NetBSD_Version__ < 105080000 674 int fw_init(struct ifnet *); 675 void fw_stop(struct ifnet *, int); 676 #endif 677 678 switch (cmd) { 679 case SIOCSIFADDR: 680 ifp->if_flags |= IFF_UP; 681 switch (ifa->ifa_addr->sa_family) { 682 #ifdef INET 683 case AF_INET: 684 #if __NetBSD_Version__ >= 105080000 685 if ((error = (*ifp->if_init)(ifp)) != 0) 686 #else 687 if ((error = fw_init(ifp)) != 0) 688 #endif 689 break; 690 arp_ifinit(ifp, ifa); 691 break; 692 #endif /* INET */ 693 default: 694 #if __NetBSD_Version__ >= 105080000 695 error = (*ifp->if_init)(ifp); 696 #else 697 error = fw_init(ifp); 698 #endif 699 break; 700 } 701 break; 702 703 case SIOCGIFADDR: 704 memcpy(((struct sockaddr *)&ifr->ifr_data)->sa_data, 705 LLADDR(ifp->if_sadl), IEEE1394_ADDR_LEN); 706 break; 707 708 case SIOCSIFMTU: 709 if (ifr->ifr_mtu > IEEE1394MTU) 710 error = EINVAL; 711 else 712 ifp->if_mtu = ifr->ifr_mtu; 713 break; 714 715 case SIOCSIFFLAGS: 716 #if __NetBSD_Version__ >= 105080000 717 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING) 718 (*ifp->if_stop)(ifp, 1); 719 else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP) 720 error = (*ifp->if_init)(ifp); 721 else if ((ifp->if_flags & IFF_UP) != 0) 722 error = (*ifp->if_init)(ifp); 723 #else 724 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING) 725 fw_stop(ifp, 1); 726 else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP) 727 error = fw_init(ifp); 728 else if ((ifp->if_flags & IFF_UP) != 0) 729 error = fw_init(ifp); 730 #endif 731 break; 732 733 case SIOCADDMULTI: 734 case SIOCDELMULTI: 735 /* nothing to do */ 736 break; 737 738 default: 739 error = ENOTTY; 740 break; 741 } 742 743 return error; 744 } 745
Indexes created Mon Sep 22 21:09:42 GMT 2025