if_ieee1394subr.c revision 1.21
1 /* $NetBSD: if_ieee1394subr.c,v 1.21 2003/05/01 07:52:58 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 1.21 2003/05/01 07:52:58 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 mb.m_flags = 0; 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 bpf_mtap(ifp->if_bpf, &mb); 200 } 201 #endif 202 myaddr = (struct ieee1394_hwaddr *)LLADDR(ifp->if_sadl); 203 if ((ifp->if_flags & IFF_SIMPLEX) && 204 memcmp(&hwdst, myaddr, IEEE1394_ADDR_LEN) == 0) 205 return looutput(ifp, m0, dst, rt); 206 207 /* 208 * XXX: 209 * The maximum possible rate depends on the topology. 210 * So the determination of maxrec and fragmentation should be 211 * called from the driver after probing the topology map. 212 */ 213 if (m0->m_flags & (M_BCAST | M_MCAST)) { 214 hdrlen = IEEE1394_GASP_LEN; 215 hwdst.iha_speed = 0; /* XXX */ 216 } else 217 hdrlen = 0; 218 if (hwdst.iha_speed > myaddr->iha_speed) 219 hwdst.iha_speed = myaddr->iha_speed; 220 if (hwdst.iha_maxrec > myaddr->iha_maxrec) 221 hwdst.iha_maxrec = myaddr->iha_maxrec; 222 if (hwdst.iha_maxrec > (8 + hwdst.iha_speed)) 223 hwdst.iha_maxrec = 8 + hwdst.iha_speed; 224 if (hwdst.iha_maxrec < 8) 225 hwdst.iha_maxrec = 8; 226 227 m0 = ieee1394_fragment(ifp, m0, (2<<hwdst.iha_maxrec) - hdrlen, etype); 228 if (m0 == NULL) 229 senderr(ENOBUFS); 230 231 s = splnet(); 232 ifp->if_obytes += m0->m_pkthdr.len; 233 if (m0->m_flags & M_MCAST) 234 ifp->if_omcasts++; 235 while ((m = m0) != NULL) { 236 m0 = m->m_nextpkt; 237 M_PREPEND(m, sizeof(struct ieee1394_header), M_DONTWAIT); 238 if (m == NULL) { 239 splx(s); 240 senderr(ENOBUFS); 241 } 242 memcpy(mtod(m, caddr_t), &hwdst, sizeof(hwdst)); 243 IFQ_ENQUEUE(&ifp->if_snd, m, &pktattr, error); 244 if (error) { 245 /* mbuf is already freed */ 246 splx(s); 247 goto bad; 248 } 249 } 250 if ((ifp->if_flags & IFF_OACTIVE) == 0) 251 (*ifp->if_start)(ifp); 252 splx(s); 253 return 0; 254 255 bad: 256 while (m0 != NULL) { 257 m = m0->m_nextpkt; 258 m_freem(m0); 259 m0 = m; 260 } 261 262 return error; 263 } 264 265 struct mbuf * 266 ieee1394_fragment(struct ifnet *ifp, struct mbuf *m0, int maxsize, 267 u_int16_t etype) 268 { 269 struct ieee1394com *ic = (struct ieee1394com *)ifp; 270 int totlen, fraglen, off; 271 struct mbuf *m, **mp; 272 struct ieee1394_fraghdr *ifh; 273 struct ieee1394_unfraghdr *iuh; 274 275 totlen = m0->m_pkthdr.len; 276 if (totlen + sizeof(struct ieee1394_unfraghdr) <= maxsize) { 277 M_PREPEND(m0, sizeof(struct ieee1394_unfraghdr), M_DONTWAIT); 278 if (m0 == NULL) 279 goto bad; 280 iuh = mtod(m0, struct ieee1394_unfraghdr *); 281 iuh->iuh_ft = 0; 282 iuh->iuh_etype = etype; 283 return m0; 284 } 285 286 fraglen = maxsize - sizeof(struct ieee1394_fraghdr); 287 288 M_PREPEND(m0, sizeof(struct ieee1394_fraghdr), M_DONTWAIT); 289 if (m0 == NULL) 290 goto bad; 291 ifh = mtod(m0, struct ieee1394_fraghdr *); 292 ifh->ifh_ft_size = htons(IEEE1394_FT_MORE | (totlen - 1)); 293 ifh->ifh_etype_off = etype; 294 ifh->ifh_dgl = htons(ic->ic_dgl); 295 ifh->ifh_reserved = 0; 296 off = fraglen; 297 mp = &m0->m_nextpkt; 298 while (off < totlen) { 299 if (off + fraglen > totlen) 300 fraglen = totlen - off; 301 MGETHDR(m, M_DONTWAIT, MT_HEADER); 302 if (m == NULL) 303 goto bad; 304 m->m_flags |= m0->m_flags & (M_BCAST|M_MCAST); /* copy bcast */ 305 MH_ALIGN(m, sizeof(struct ieee1394_fraghdr)); 306 m->m_len = sizeof(struct ieee1394_fraghdr); 307 ifh = mtod(m, struct ieee1394_fraghdr *); 308 ifh->ifh_ft_size = 309 htons(IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE | (totlen - 1)); 310 ifh->ifh_etype_off = htons(off); 311 ifh->ifh_dgl = htons(ic->ic_dgl); 312 ifh->ifh_reserved = 0; 313 m->m_next = m_copy(m0, sizeof(*ifh) + off, fraglen); 314 if (m->m_next == NULL) 315 goto bad; 316 m->m_pkthdr.len = sizeof(*ifh) + fraglen; 317 off += fraglen; 318 *mp = m; 319 mp = &m->m_nextpkt; 320 } 321 ifh->ifh_ft_size &= ~htons(IEEE1394_FT_MORE); /* last fragment */ 322 m_adj(m0, -(m0->m_pkthdr.len - maxsize)); 323 324 ic->ic_dgl++; 325 return m0; 326 327 bad: 328 while ((m = m0) != NULL) { 329 m0 = m->m_nextpkt; 330 m->m_nextpkt = NULL; 331 m_freem(m); 332 } 333 return NULL; 334 } 335 336 static void 337 ieee1394_input(struct ifnet *ifp, struct mbuf *m) 338 { 339 struct ifqueue *inq; 340 u_int16_t etype; 341 int s; 342 struct ieee1394_header *ih; 343 struct ieee1394_unfraghdr *iuh; 344 345 if ((ifp->if_flags & IFF_UP) == 0) { 346 m_freem(m); 347 return; 348 } 349 if (m->m_len < sizeof(*ih) + sizeof(*iuh)) { 350 if ((m = m_pullup(m, sizeof(*ih) + sizeof(*iuh))) == NULL) 351 return; 352 } 353 354 ih = mtod(m, struct ieee1394_header *); 355 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 356 357 if (ntohs(iuh->iuh_ft) & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE)) { 358 if ((m = ieee1394_reass(ifp, m)) == NULL) 359 return; 360 ih = mtod(m, struct ieee1394_header *); 361 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 362 } 363 etype = ntohs(iuh->iuh_etype); 364 365 /* strip off the ieee1394 header */ 366 m_adj(m, sizeof(*ih) + sizeof(*iuh)); 367 #if NBPFILTER > 0 368 /* XXX: emulate DLT_EN10MB */ 369 if (ifp->if_bpf) { 370 struct mbuf mb; 371 372 mb.m_flags = 0; 373 mb.m_next = m; 374 mb.m_len = 14; 375 ((u_int32_t *)mb.m_data)[0] = 0; 376 ((u_int32_t *)mb.m_data)[1] = 0; 377 ((u_int32_t *)mb.m_data)[2] = 0; 378 ((u_int16_t *)mb.m_data)[6] = iuh->iuh_etype; 379 bpf_mtap(ifp->if_bpf, &mb); 380 } 381 #endif 382 383 switch (etype) { 384 #ifdef INET 385 case ETHERTYPE_IP: 386 schednetisr(NETISR_IP); 387 inq = &ipintrq; 388 break; 389 390 case ETHERTYPE_ARP: 391 schednetisr(NETISR_ARP); 392 inq = &arpintrq; 393 break; 394 #endif /* INET */ 395 396 #ifdef INET6 397 case ETHERTYPE_IPV6: 398 schednetisr(NETISR_IPV6); 399 inq = &ip6intrq; 400 break; 401 #endif /* INET6 */ 402 403 default: 404 m_freem(m); 405 return; 406 } 407 408 s = splnet(); 409 if (IF_QFULL(inq)) { 410 IF_DROP(inq); 411 m_freem(m); 412 } else 413 IF_ENQUEUE(inq, m); 414 splx(s); 415 } 416 417 static struct mbuf * 418 ieee1394_reass(struct ifnet *ifp, struct mbuf *m0) 419 { 420 struct ieee1394com *ic = (struct ieee1394com *)ifp; 421 struct ieee1394_header *ih; 422 struct ieee1394_fraghdr *ifh; 423 struct ieee1394_unfraghdr *iuh; 424 struct ieee1394_reassq *rq; 425 struct ieee1394_reass_pkt *rp, *trp, *nrp; 426 int len; 427 u_int16_t off, ftype, size, dgl; 428 429 if (m0->m_len < sizeof(*ih) + sizeof(*ifh)) { 430 if ((m0 = m_pullup(m0, sizeof(*ih) + sizeof(*ifh))) == NULL) 431 return NULL; 432 } 433 ih = mtod(m0, struct ieee1394_header *); 434 ifh = (struct ieee1394_fraghdr *)&ih[1]; 435 m_adj(m0, sizeof(*ih) + sizeof(*ifh)); 436 size = ntohs(ifh->ifh_ft_size); 437 ftype = size & (IEEE1394_FT_SUBSEQ | IEEE1394_FT_MORE); 438 size = (size & ~ftype) + 1; 439 dgl = ifh->ifh_dgl; 440 len = m0->m_pkthdr.len; 441 if (ftype & IEEE1394_FT_SUBSEQ) { 442 m0->m_flags &= ~M_PKTHDR; 443 off = ntohs(ifh->ifh_etype_off); 444 } else 445 off = 0; 446 447 for (rq = LIST_FIRST(&ic->ic_reassq); ; rq = LIST_NEXT(rq, rq_node)) { 448 if (rq == NULL) { 449 /* 450 * Create a new reassemble queue head for the node. 451 */ 452 rq = malloc(sizeof(*rq), M_FTABLE, M_NOWAIT); 453 if (rq == NULL) { 454 m_freem(m0); 455 return NULL; 456 } 457 memcpy(rq->rq_uid, ih->ih_uid, IEEE1394_ADDR_LEN); 458 LIST_INIT(&rq->rq_pkt); 459 LIST_INSERT_HEAD(&ic->ic_reassq, rq, rq_node); 460 break; 461 } 462 if (memcmp(rq->rq_uid, ih->ih_uid, IEEE1394_ADDR_LEN) == 0) 463 break; 464 } 465 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 466 nrp = LIST_NEXT(rp, rp_next); 467 if (rp->rp_dgl != dgl) 468 continue; 469 /* 470 * sanity check: 471 * datagram size must be same for all fragments, and 472 * no overlap is allowed. 473 */ 474 if (rp->rp_size != size || 475 (off < rp->rp_off + rp->rp_len && off + len > rp->rp_off)) { 476 /* 477 * This happens probably due to wrapping dgl value. 478 * Destroy all previously received fragment and 479 * enqueue current fragment. 480 */ 481 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; 482 rp = nrp) { 483 nrp = LIST_NEXT(rp, rp_next); 484 if (rp->rp_dgl == dgl) { 485 LIST_REMOVE(rp, rp_next); 486 m_freem(rp->rp_m); 487 free(rp, M_FTABLE); 488 } 489 } 490 break; 491 } 492 if (rp->rp_off + rp->rp_len == off) { 493 /* 494 * All the subsequent fragments received in sequence 495 * come here. 496 * Concatinate mbuf to previous one instead of 497 * allocating new reassemble queue structure, 498 * and try to merge more with the subsequent fragment 499 * in the queue. 500 */ 501 m_cat(rp->rp_m, m0); 502 rp->rp_len += len; 503 while (rp->rp_off + rp->rp_len < size && 504 nrp != NULL && nrp->rp_dgl == dgl && 505 nrp->rp_off == rp->rp_off + rp->rp_len) { 506 LIST_REMOVE(nrp, rp_next); 507 m_cat(rp->rp_m, nrp->rp_m); 508 rp->rp_len += nrp->rp_len; 509 free(nrp, M_FTABLE); 510 nrp = LIST_NEXT(rp, rp_next); 511 } 512 m0 = NULL; /* mark merged */ 513 break; 514 } 515 if (off + m0->m_pkthdr.len == rp->rp_off) { 516 m_cat(m0, rp->rp_m); 517 rp->rp_m = m0; 518 rp->rp_off = off; 519 rp->rp_len += len; 520 m0 = NULL; /* mark merged */ 521 break; 522 } 523 if (rp->rp_off > off) { 524 /* insert before rp */ 525 nrp = rp; 526 break; 527 } 528 if (nrp == NULL || nrp->rp_dgl != dgl) { 529 /* insert after rp */ 530 nrp = NULL; 531 break; 532 } 533 } 534 if (m0 == NULL) { 535 if (rp->rp_off != 0 || rp->rp_len != size) 536 return NULL; 537 /* fragment done */ 538 LIST_REMOVE(rp, rp_next); 539 m0 = rp->rp_m; 540 m0->m_pkthdr.len = rp->rp_len; 541 M_PREPEND(m0, sizeof(*ih) + sizeof(*iuh), M_DONTWAIT); 542 if (m0 != NULL) { 543 ih = mtod(m0, struct ieee1394_header *); 544 iuh = (struct ieee1394_unfraghdr *)&ih[1]; 545 memcpy(ih, &rp->rp_hdr, sizeof(*ih)); 546 iuh->iuh_ft = 0; 547 iuh->iuh_etype = rp->rp_etype; 548 } 549 free(rp, M_FTABLE); 550 return m0; 551 } 552 553 /* 554 * New fragment received. Allocate reassemble queue structure. 555 */ 556 trp = malloc(sizeof(*trp), M_FTABLE, M_NOWAIT); 557 if (trp == NULL) { 558 m_freem(m0); 559 return NULL; 560 } 561 trp->rp_m = m0; 562 memcpy(&trp->rp_hdr, ih, sizeof(*ih)); 563 trp->rp_size = size; 564 trp->rp_etype = ifh->ifh_etype_off; /* valid only if off==0 */ 565 trp->rp_off = off; 566 trp->rp_dgl = dgl; 567 trp->rp_len = len; 568 trp->rp_ttl = IEEE1394_REASS_TIMEOUT; 569 if (trp->rp_ttl <= ifp->if_timer) 570 trp->rp_ttl = ifp->if_timer + 1; 571 572 if (rp == NULL) { 573 /* first fragment for the dgl */ 574 LIST_INSERT_HEAD(&rq->rq_pkt, trp, rp_next); 575 } else if (nrp == NULL) { 576 /* no next fragment for the dgl */ 577 LIST_INSERT_AFTER(rp, trp, rp_next); 578 } else { 579 /* there is a hole */ 580 LIST_INSERT_BEFORE(nrp, trp, rp_next); 581 } 582 return NULL; 583 } 584 585 void 586 ieee1394_drain(struct ifnet *ifp) 587 { 588 struct ieee1394com *ic = (struct ieee1394com *)ifp; 589 struct ieee1394_reassq *rq; 590 struct ieee1394_reass_pkt *rp; 591 592 while ((rq = LIST_FIRST(&ic->ic_reassq)) != NULL) { 593 LIST_REMOVE(rq, rq_node); 594 while ((rp = LIST_FIRST(&rq->rq_pkt)) != NULL) { 595 LIST_REMOVE(rp, rp_next); 596 m_freem(rp->rp_m); 597 free(rp, M_FTABLE); 598 } 599 free(rq, M_FTABLE); 600 } 601 } 602 603 void 604 ieee1394_watchdog(struct ifnet *ifp) 605 { 606 struct ieee1394com *ic = (struct ieee1394com *)ifp; 607 struct ieee1394_reassq *rq; 608 struct ieee1394_reass_pkt *rp, *nrp; 609 int dec; 610 611 dec = (ifp->if_timer > 0) ? ifp->if_timer : 1; 612 for (rq = LIST_FIRST(&ic->ic_reassq); rq != NULL; 613 rq = LIST_NEXT(rq, rq_node)) { 614 for (rp = LIST_FIRST(&rq->rq_pkt); rp != NULL; rp = nrp) { 615 nrp = LIST_NEXT(rp, rp_next); 616 if (rp->rp_ttl >= dec) 617 rp->rp_ttl -= dec; 618 else { 619 LIST_REMOVE(rp, rp_next); 620 m_freem(rp->rp_m); 621 free(rp, M_FTABLE); 622 } 623 } 624 } 625 } 626 627 const char * 628 ieee1394_sprintf(const u_int8_t *laddr) 629 { 630 static char buf[3*8]; 631 632 snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 633 laddr[0], laddr[1], laddr[2], laddr[3], 634 laddr[4], laddr[5], laddr[6], laddr[7]); 635 return buf; 636 } 637 638 void 639 ieee1394_ifattach(struct ifnet *ifp, const struct ieee1394_hwaddr *hwaddr) 640 { 641 struct ieee1394_hwaddr *baddr; 642 struct ieee1394com *ic = (struct ieee1394com *)ifp; 643 644 ifp->if_type = IFT_IEEE1394; 645 ifp->if_addrlen = sizeof(struct ieee1394_hwaddr); 646 ifp->if_hdrlen = sizeof(struct ieee1394_header); 647 ifp->if_dlt = DLT_EN10MB; /* XXX */ 648 ifp->if_mtu = IEEE1394MTU; 649 ifp->if_output = ieee1394_output; 650 ifp->if_input = ieee1394_input; 651 ifp->if_drain = ieee1394_drain; 652 ifp->if_watchdog = ieee1394_watchdog; 653 ifp->if_timer = 1; 654 if (ifp->if_baudrate == 0) 655 ifp->if_baudrate = IF_Mbps(100); 656 657 if_alloc_sadl(ifp); 658 memcpy(LLADDR(ifp->if_sadl), hwaddr, ifp->if_addrlen); 659 660 ifp->if_broadcastaddr = malloc(ifp->if_addrlen, M_DEVBUF, M_WAITOK); 661 baddr = (struct ieee1394_hwaddr *)ifp->if_broadcastaddr; 662 memset(baddr->iha_uid, 0xff, IEEE1394_ADDR_LEN); 663 baddr->iha_speed = 0; /*XXX: how to determine the speed for bcast? */ 664 baddr->iha_maxrec = 512 << baddr->iha_speed; 665 memset(baddr->iha_offset, 0, sizeof(baddr->iha_offset)); 666 LIST_INIT(&ic->ic_reassq); 667 #if NBPFILTER > 0 668 bpfattach(ifp, DLT_EN10MB, 14); /* XXX */ 669 #endif 670 } 671 672 void 673 ieee1394_ifdetach(struct ifnet *ifp) 674 { 675 ieee1394_drain(ifp); 676 #if NBPFILTER > 0 677 bpfdetach(ifp); 678 #endif 679 free(ifp->if_broadcastaddr, M_DEVBUF); 680 ifp->if_broadcastaddr = NULL; 681 if_free_sadl(ifp); 682 } 683 684 int 685 ieee1394_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 686 { 687 struct ifreq *ifr = (struct ifreq *)data; 688 struct ifaddr *ifa = (struct ifaddr *)data; 689 int error = 0; 690 #if __NetBSD_Version__ < 105080000 691 int fw_init(struct ifnet *); 692 void fw_stop(struct ifnet *, int); 693 #endif 694 695 switch (cmd) { 696 case SIOCSIFADDR: 697 ifp->if_flags |= IFF_UP; 698 switch (ifa->ifa_addr->sa_family) { 699 #ifdef INET 700 case AF_INET: 701 #if __NetBSD_Version__ >= 105080000 702 if ((error = (*ifp->if_init)(ifp)) != 0) 703 #else 704 if ((error = fw_init(ifp)) != 0) 705 #endif 706 break; 707 arp_ifinit(ifp, ifa); 708 break; 709 #endif /* INET */ 710 default: 711 #if __NetBSD_Version__ >= 105080000 712 error = (*ifp->if_init)(ifp); 713 #else 714 error = fw_init(ifp); 715 #endif 716 break; 717 } 718 break; 719 720 case SIOCGIFADDR: 721 memcpy(((struct sockaddr *)&ifr->ifr_data)->sa_data, 722 LLADDR(ifp->if_sadl), IEEE1394_ADDR_LEN); 723 break; 724 725 case SIOCSIFMTU: 726 if (ifr->ifr_mtu > IEEE1394MTU) 727 error = EINVAL; 728 else 729 ifp->if_mtu = ifr->ifr_mtu; 730 break; 731 732 case SIOCSIFFLAGS: 733 #if __NetBSD_Version__ >= 105080000 734 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING) 735 (*ifp->if_stop)(ifp, 1); 736 else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP) 737 error = (*ifp->if_init)(ifp); 738 else if ((ifp->if_flags & IFF_UP) != 0) 739 error = (*ifp->if_init)(ifp); 740 #else 741 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING) 742 fw_stop(ifp, 1); 743 else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP) 744 error = fw_init(ifp); 745 else if ((ifp->if_flags & IFF_UP) != 0) 746 error = fw_init(ifp); 747 #endif 748 break; 749 750 case SIOCADDMULTI: 751 case SIOCDELMULTI: 752 /* nothing to do */ 753 break; 754 755 default: 756 error = ENOTTY; 757 break; 758 } 759 760 return error; 761 } 762
Indexes created Tue Sep 23 23:09:58 GMT 2025