if_ieee1394subr.c revision 1.20
1 /* $NetBSD: if_ieee1394subr.c,v 1.20 2003/05/01 07:41:59 itojun 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 1.20 2003/05/01 07:41:59 itojun 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 struct mbuf mb; 191 192 M_COPY_PKTHDR(&mb, m0); 193 mb.m_next = m0; 194 mb.m_len = 14; 195 ((u_int32_t *)mb.m_data)[0] = 0; 196 ((u_int32_t *)mb.m_data)[1] = 0; 197 ((u_int32_t *)mb.m_data)[2] = 0; 198 ((u_int16_t *)mb.m_data)[6] = etype; 199 mb.m_pkthdr.len += mb.m_len; 200 bpf_mtap(ifp->if_bpf, &mb); 201 } 202 #endif 203 myaddr = (struct ieee1394_hwaddr *)LLADDR(ifp->if_sadl); 204 if ((ifp->if_flags & IFF_SIMPLEX) && 205 memcmp(&hwdst, myaddr, IEEE1394_ADDR_LEN) == 0) 206 return looutput(ifp, m0, dst, rt); 207 208 /* 209 * XXX: 210 * The maximum possible rate depends on the topology. 211 * So the determination of maxrec and fragmentation should be 212 * called from the driver after probing the topology map. 213 */ 214 if (m0->m_flags & (M_BCAST | M_MCAST)) { 215 hdrlen = IEEE1394_GASP_LEN; 216 hwdst.iha_speed = 0; /* XXX */ 217 } else 218 hdrlen = 0; 219 if (hwdst.iha_speed > myaddr->iha_speed) 220 hwdst.iha_speed = myaddr->iha_speed; 221 if (hwdst.iha_maxrec > myaddr->iha_maxrec) 222 hwdst.iha_maxrec = myaddr->iha_maxrec; 223 if (hwdst.iha_maxrec > (8 + hwdst.iha_speed)) 224 hwdst.iha_maxrec = 8 + hwdst.iha_speed; 225 if (hwdst.iha_maxrec < 8) 226 hwdst.iha_maxrec = 8; 227 228 m0 = ieee1394_fragment(ifp, m0, (2<<hwdst.iha_maxrec) - hdrlen, etype); 229 if (m0 == NULL) 230 senderr(ENOBUFS); 231 232 s = splnet(); 233 ifp->if_obytes += m0->m_pkthdr.len; 234 if (m0->m_flags & M_MCAST) 235 ifp->if_omcasts++; 236 while ((m = m0) != NULL) { 237 m0 = m->m_nextpkt; 238 M_PREPEND(m, sizeof(struct ieee1394_header), M_DONTWAIT); 239 if (m == NULL) { 240 splx(s); 241 senderr(ENOBUFS); 242 } 243 memcpy(mtod(m, caddr_t), &hwdst, sizeof(hwdst)); 244 IFQ_ENQUEUE(&ifp->if_snd, m, &pktattr, error); 245 if (error) { 246 /* mbuf is already freed */ 247 splx(s); 248 goto bad; 249 } 250 } 251 if ((ifp->if_flags & IFF_OACTIVE) == 0) 252 (*ifp->if_start)(ifp); 253 splx(s); 254 return 0; 255 256 bad: 257 while (m0 != NULL) { 258 m = m0->m_nextpkt; 259 m_freem(m0); 260 m0 = m; 261 } 262 263 return error; 264 } 265 266 struct mbuf * 267 ieee1394_fragment(struct ifnet *ifp, struct mbuf *m0, int maxsize, 268 u_int16_t etype) 269 { 270 struct ieee1394com *ic = (struct ieee1394com *)ifp; 271 int totlen, fraglen, off; 272 struct mbuf *m, **mp; 273 struct ieee1394_fraghdr *ifh; 274 struct ieee1394_unfraghdr *iuh; 275 276 totlen = m0->m_pkthdr.len; 277 if (totlen + sizeof(struct ieee1394_unfraghdr) <= maxsize) { 278 M_PREPEND(m0, sizeof(struct ieee1394_unfraghdr), M_DONTWAIT); 279 if (m0 == NULL) 280 goto bad; 281 iuh = mtod(m0, struct ieee1394_unfraghdr *); 282 iuh->iuh_ft = 0; 283 iuh->iuh_etype = etype; 284 return m0; 285 } 286 287 fraglen = maxsize - sizeof(struct ieee1394_fraghdr); 288 289 M_PREPEND(m0, sizeof(struct ieee1394_fraghdr), M_DONTWAIT); 290 if (m0 == NULL) 291 goto bad; 292 ifh = mtod(m0, struct ieee1394_fraghdr *); 293 ifh->ifh_ft_size = htons(IEEE1394_FT_MORE | (totlen - 1)); 294 ifh->ifh_etype_off = etype; 295 ifh->ifh_dgl = htons(ic->ic_dgl); 296 ifh->ifh_reserved = 0; 297 off = fraglen; 298 mp = &m0->m_nextpkt; 299 while (off < totlen) { 300 if (off + fraglen > totlen) 301 fraglen = totlen - off; 302 MGETHDR(m, M_DONTWAIT, MT_HEADER); 303 if (m == NULL) 304 goto bad; 305 m->m_flags |= m0->m_flags & (M_BCAST|M_MCAST); /* copy bcast */ 306 MH_ALIGN(m, sizeof(struct ieee1394_fraghdr)); 307 m->m_len = sizeof(struct ieee1394_fraghdr); 308 ifh = mtod(m, struct ieee1394_fraghdr *); 309 ifh->ifh_ft_size = 310 htons(IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE | (totlen - 1)); 311 ifh->ifh_etype_off = htons(off); 312 ifh->ifh_dgl = htons(ic->ic_dgl); 313 ifh->ifh_reserved = 0; 314 m->m_next = m_copy(m0, sizeof(*ifh) + off, fraglen); 315 if (m->m_next == NULL) 316 goto bad; 317 m->m_pkthdr.len = sizeof(*ifh) + fraglen; 318 off += fraglen; 319 *mp = m; 320 mp = &m->m_nextpkt; 321 } 322 ifh->ifh_ft_size &= ~htons(IEEE1394_FT_MORE); /* last fragment */ 323 m_adj(m0, -(m0->m_pkthdr.len - maxsize)); 324 325 ic->ic_dgl++; 326 return m0; 327 328 bad: 329 while ((m = m0) != NULL) { 330 m0 = m->m_nextpkt; 331 m->m_nextpkt = NULL; 332 m_freem(m); 333 } 334 return NULL; 335 } 336 337 static void 338 ieee1394_input(struct ifnet *ifp, struct mbuf *m) 339 { 340 struct ifqueue *inq; 341 u_int16_t etype; 342 int s; 343 struct ieee1394_header *ih; 344 struct ieee1394_unfraghdr *iuh; 345 346 if ((ifp->if_flags & IFF_UP) == 0) { 347 m_freem(m); 348 return; 349 } 350 if (m->m_len < sizeof(*ih) + sizeof(*iuh)) { 351 if ((m = m_pullup(m, sizeof(*ih) + sizeof(*iuh))) == NULL) 352 return; 353 } 354 355 ih = mtod(m, struct ieee1394_header *); 356 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 357 358 if (ntohs(iuh->iuh_ft) & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE)) { 359 if ((m = ieee1394_reass(ifp, m)) == NULL) 360 return; 361 ih = mtod(m, struct ieee1394_header *); 362 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 363 } 364 etype = ntohs(iuh->iuh_etype); 365 366 /* strip off the ieee1394 header */ 367 m_adj(m, sizeof(*ih) + sizeof(*iuh)); 368 #if NBPFILTER > 0 369 /* XXX: emulate DLT_EN10MB */ 370 if (ifp->if_bpf) { 371 struct mbuf mb; 372 373 M_COPY_PKTHDR(&mb, m); 374 mb.m_next = m; 375 mb.m_len = 14; 376 ((u_int32_t *)mb.m_data)[0] = 0; 377 ((u_int32_t *)mb.m_data)[1] = 0; 378 ((u_int32_t *)mb.m_data)[2] = 0; 379 ((u_int16_t *)mb.m_data)[6] = iuh->iuh_etype; 380 mb.m_pkthdr.len += mb.m_len; 381 bpf_mtap(ifp->if_bpf, &mb); 382 } 383 #endif 384 385 switch (etype) { 386 #ifdef INET 387 case ETHERTYPE_IP: 388 schednetisr(NETISR_IP); 389 inq = &ipintrq; 390 break; 391 392 case ETHERTYPE_ARP: 393 schednetisr(NETISR_ARP); 394 inq = &arpintrq; 395 break; 396 #endif /* INET */ 397 398 #ifdef INET6 399 case ETHERTYPE_IPV6: 400 schednetisr(NETISR_IPV6); 401 inq = &ip6intrq; 402 break; 403 #endif /* INET6 */ 404 405 default: 406 m_freem(m); 407 return; 408 } 409 410 s = splnet(); 411 if (IF_QFULL(inq)) { 412 IF_DROP(inq); 413 m_freem(m); 414 } else 415 IF_ENQUEUE(inq, m); 416 splx(s); 417 } 418 419 static struct mbuf * 420 ieee1394_reass(struct ifnet *ifp, struct mbuf *m0) 421 { 422 struct ieee1394com *ic = (struct ieee1394com *)ifp; 423 struct ieee1394_header *ih; 424 struct ieee1394_fraghdr *ifh; 425 struct ieee1394_unfraghdr *iuh; 426 struct ieee1394_reassq *rq; 427 struct ieee1394_reass_pkt *rp, *trp, *nrp; 428 int len; 429 u_int16_t off, ftype, size, dgl; 430 431 if (m0->m_len < sizeof(*ih) + sizeof(*ifh)) { 432 if ((m0 = m_pullup(m0, sizeof(*ih) + sizeof(*ifh))) == NULL) 433 return NULL; 434 } 435 ih = mtod(m0, struct ieee1394_header *); 436 ifh = (struct ieee1394_fraghdr *)&ih[1]; 437 m_adj(m0, sizeof(*ih) + sizeof(*ifh)); 438 size = ntohs(ifh->ifh_ft_size); 439 ftype = size & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE); 440 size = (size & ~ftype) + 1; 441 dgl = ifh->ifh_dgl; 442 len = m0->m_pkthdr.len; 443 if (ftype & IEEE1394_FT_SUBSEQ) { 444 m0->m_flags &= ~M_PKTHDR; 445 off = ntohs(ifh->ifh_etype_off); 446 } else 447 off = 0; 448 449 for (rq = LIST_FIRST(&ic->ic_reassq); ; rq = LIST_NEXT(rq, rq_node)) { 450 if (rq == NULL) { 451 /* 452 * Create a new reassemble queue head for the node. 453 */ 454 rq = malloc(sizeof(*rq), M_FTABLE, M_NOWAIT); 455 if (rq == NULL) { 456 m_freem(m0); 457 return NULL; 458 } 459 memcpy(rq->rq_uid, ih->ih_uid, IEEE1394_ADDR_LEN); 460 LIST_INIT(&rq->rq_pkt); 461 LIST_INSERT_HEAD(&ic->ic_reassq, rq, rq_node); 462 break; 463 } 464 if (memcmp(rq->rq_uid, ih->ih_uid, IEEE1394_ADDR_LEN) == 0) 465 break; 466 } 467 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 468 nrp = LIST_NEXT(rp, rp_next); 469 if (rp->rp_dgl != dgl) 470 continue; 471 /* 472 * sanity check: 473 * datagram size must be same for all fragments, and 474 * no overlap is allowed. 475 */ 476 if (rp->rp_size != size || 477 (off < rp->rp_off + rp->rp_len && off + len > rp->rp_off)) { 478 /* 479 * This happens probably due to wrapping dgl value. 480 * Destroy all previously received fragment and 481 * enqueue current fragment. 482 */ 483 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; 484 rp = nrp) { 485 nrp = LIST_NEXT(rp, rp_next); 486 if (rp->rp_dgl == dgl) { 487 LIST_REMOVE(rp, rp_next); 488 m_freem(rp->rp_m); 489 free(rp, M_FTABLE); 490 } 491 } 492 break; 493 } 494 if (rp->rp_off + rp->rp_len == off) { 495 /* 496 * All the subsequent fragments received in sequence 497 * come here. 498 * Concatinate mbuf to previous one instead of 499 * allocating new reassemble queue structure, 500 * and try to merge more with the subsequent fragment 501 * in the queue. 502 */ 503 m_cat(rp->rp_m, m0); 504 rp->rp_len += len; 505 while (rp->rp_off + rp->rp_len < size && 506 nrp != NULL && nrp->rp_dgl == dgl && 507 nrp->rp_off == rp->rp_off + rp->rp_len) { 508 LIST_REMOVE(nrp, rp_next); 509 m_cat(rp->rp_m, nrp->rp_m); 510 rp->rp_len += nrp->rp_len; 511 free(nrp, M_FTABLE); 512 nrp = LIST_NEXT(rp, rp_next); 513 } 514 m0 = NULL; /* mark merged */ 515 break; 516 } 517 if (off + m0->m_pkthdr.len == rp->rp_off) { 518 m_cat(m0, rp->rp_m); 519 rp->rp_m = m0; 520 rp->rp_off = off; 521 rp->rp_len += len; 522 m0 = NULL; /* mark merged */ 523 break; 524 } 525 if (rp->rp_off > off) { 526 /* insert before rp */ 527 nrp = rp; 528 break; 529 } 530 if (nrp == NULL || nrp->rp_dgl != dgl) { 531 /* insert after rp */ 532 nrp = NULL; 533 break; 534 } 535 } 536 if (m0 == NULL) { 537 if (rp->rp_off != 0 || rp->rp_len != size) 538 return NULL; 539 /* fragment done */ 540 LIST_REMOVE(rp, rp_next); 541 m0 = rp->rp_m; 542 m0->m_pkthdr.len = rp->rp_len; 543 M_PREPEND(m0, sizeof(*ih) + sizeof(*iuh), M_DONTWAIT); 544 if (m0 != NULL) { 545 ih = mtod(m0, struct ieee1394_header *); 546 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 547 memcpy(ih, &rp->rp_hdr, sizeof(*ih)); 548 iuh->iuh_ft = 0; 549 iuh->iuh_etype = rp->rp_etype; 550 } 551 free(rp, M_FTABLE); 552 return m0; 553 } 554 555 /* 556 * New fragment received. Allocate reassemble queue structure. 557 */ 558 trp = malloc(sizeof(*trp), M_FTABLE, M_NOWAIT); 559 if (trp == NULL) { 560 m_freem(m0); 561 return NULL; 562 } 563 trp->rp_m = m0; 564 memcpy(&trp->rp_hdr, ih, sizeof(*ih)); 565 trp->rp_size = size; 566 trp->rp_etype = ifh->ifh_etype_off; /* valid only if off==0 */ 567 trp->rp_off = off; 568 trp->rp_dgl = dgl; 569 trp->rp_len = len; 570 trp->rp_ttl = IEEE1394_REASS_TIMEOUT; 571 if (trp->rp_ttl <= ifp->if_timer) 572 trp->rp_ttl = ifp->if_timer + 1; 573 574 if (rp == NULL) { 575 /* first fragment for the dgl */ 576 LIST_INSERT_HEAD(&rq->rq_pkt, trp, rp_next); 577 } else if (nrp == NULL) { 578 /* no next fragment for the dgl */ 579 LIST_INSERT_AFTER(rp, trp, rp_next); 580 } else { 581 /* there is a hole */ 582 LIST_INSERT_BEFORE(nrp, trp, rp_next); 583 } 584 return NULL; 585 } 586 587 void 588 ieee1394_drain(struct ifnet *ifp) 589 { 590 struct ieee1394com *ic = (struct ieee1394com *)ifp; 591 struct ieee1394_reassq *rq; 592 struct ieee1394_reass_pkt *rp; 593 594 while ((rq = LIST_FIRST(&ic->ic_reassq)) != NULL) { 595 LIST_REMOVE(rq, rq_node); 596 while ((rp = LIST_FIRST(&rq->rq_pkt)) != NULL) { 597 LIST_REMOVE(rp, rp_next); 598 m_freem(rp->rp_m); 599 free(rp, M_FTABLE); 600 } 601 free(rq, M_FTABLE); 602 } 603 } 604 605 void 606 ieee1394_watchdog(struct ifnet *ifp) 607 { 608 struct ieee1394com *ic = (struct ieee1394com *)ifp; 609 struct ieee1394_reassq *rq; 610 struct ieee1394_reass_pkt *rp, *nrp; 611 int dec; 612 613 dec = (ifp->if_timer > 0) ? ifp->if_timer : 1; 614 for (rq = LIST_FIRST(&ic->ic_reassq); rq != NULL; 615 rq = LIST_NEXT(rq, rq_node)) { 616 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 617 nrp = LIST_NEXT(rp, rp_next); 618 if (rp->rp_ttl >= dec) 619 rp->rp_ttl -= dec; 620 else { 621 LIST_REMOVE(rp, rp_next); 622 m_freem(rp->rp_m); 623 free(rp, M_FTABLE); 624 } 625 } 626 } 627 } 628 629 const char * 630 ieee1394_sprintf(const u_int8_t *laddr) 631 { 632 static char buf[3*8]; 633 634 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 635 laddr[0], laddr[1], laddr[2], laddr[3], 636 laddr[4], laddr[5], laddr[6], laddr[7]); 637 return buf; 638 } 639 640 void 641 ieee1394_ifattach(struct ifnet *ifp, const struct ieee1394_hwaddr *hwaddr) 642 { 643 struct ieee1394_hwaddr *baddr; 644 struct ieee1394com *ic = (struct ieee1394com *)ifp; 645 646 ifp->if_type = IFT_IEEE1394; 647 ifp->if_addrlen = sizeof(struct ieee1394_hwaddr); 648 ifp->if_hdrlen = sizeof(struct ieee1394_header); 649 ifp->if_dlt = DLT_EN10MB; /* XXX */ 650 ifp->if_mtu = IEEE1394MTU; 651 ifp->if_output = ieee1394_output; 652 ifp->if_input = ieee1394_input; 653 ifp->if_drain = ieee1394_drain; 654 ifp->if_watchdog = ieee1394_watchdog; 655 ifp->if_timer = 1; 656 if (ifp->if_baudrate == 0) 657 ifp->if_baudrate = IF_Mbps(100); 658 659 if_alloc_sadl(ifp); 660 memcpy(LLADDR(ifp->if_sadl), hwaddr, ifp->if_addrlen); 661 662 ifp->if_broadcastaddr = malloc(ifp->if_addrlen, M_DEVBUF, M_WAITOK); 663 baddr = (struct ieee1394_hwaddr *)ifp->if_broadcastaddr; 664 memset(baddr->iha_uid, 0xff, IEEE1394_ADDR_LEN); 665 baddr->iha_speed = 0; /*XXX: how to determine the speed for bcast? */ 666 baddr->iha_maxrec = 512 << baddr->iha_speed; 667 memset(baddr->iha_offset, 0, sizeof(baddr->iha_offset)); 668 LIST_INIT(&ic->ic_reassq); 669 #if NBPFILTER > 0 670 bpfattach(ifp, DLT_EN10MB, 14); /* XXX */ 671 #endif 672 } 673 674 void 675 ieee1394_ifdetach(struct ifnet *ifp) 676 { 677 ieee1394_drain(ifp); 678 #if NBPFILTER > 0 679 bpfdetach(ifp); 680 #endif 681 free(ifp->if_broadcastaddr, M_DEVBUF); 682 ifp->if_broadcastaddr = NULL; 683 if_free_sadl(ifp); 684 } 685 686 int 687 ieee1394_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 688 { 689 struct ifreq *ifr = (struct ifreq *)data; 690 struct ifaddr *ifa = (struct ifaddr *)data; 691 int error = 0; 692 #if __NetBSD_Version__ < 105080000 693 int fw_init(struct ifnet *); 694 void fw_stop(struct ifnet *, int); 695 #endif 696 697 switch (cmd) { 698 case SIOCSIFADDR: 699 ifp->if_flags |= IFF_UP; 700 switch (ifa->ifa_addr->sa_family) { 701 #ifdef INET 702 case AF_INET: 703 #if __NetBSD_Version__ >= 105080000 704 if ((error = (*ifp->if_init)(ifp)) != 0) 705 #else 706 if ((error = fw_init(ifp)) != 0) 707 #endif 708 break; 709 arp_ifinit(ifp, ifa); 710 break; 711 #endif /* INET */ 712 default: 713 #if __NetBSD_Version__ >= 105080000 714 error = (*ifp->if_init)(ifp); 715 #else 716 error = fw_init(ifp); 717 #endif 718 break; 719 } 720 break; 721 722 case SIOCGIFADDR: 723 memcpy(((struct sockaddr *)&ifr->ifr_data)->sa_data, 724 LLADDR(ifp->if_sadl), IEEE1394_ADDR_LEN); 725 break; 726 727 case SIOCSIFMTU: 728 if (ifr->ifr_mtu > IEEE1394MTU) 729 error = EINVAL; 730 else 731 ifp->if_mtu = ifr->ifr_mtu; 732 break; 733 734 case SIOCSIFFLAGS: 735 #if __NetBSD_Version__ >= 105080000 736 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING) 737 (*ifp->if_stop)(ifp, 1); 738 else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP) 739 error = (*ifp->if_init)(ifp); 740 else if ((ifp->if_flags & IFF_UP) != 0) 741 error = (*ifp->if_init)(ifp); 742 #else 743 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING) 744 fw_stop(ifp, 1); 745 else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP) 746 error = fw_init(ifp); 747 else if ((ifp->if_flags & IFF_UP) != 0) 748 error = fw_init(ifp); 749 #endif 750 break; 751 752 case SIOCADDMULTI: 753 case SIOCDELMULTI: 754 /* nothing to do */ 755 break; 756 757 default: 758 error = ENOTTY; 759 break; 760 } 761 762 return error; 763 } 764
Indexes created Tue Sep 23 22:09:46 GMT 2025