| 1 | /* |
| 2 | * Copyright (c) 1995, 1996 |
| 3 | * Matt Thomas <matt@3am-software.com>. All rights reserved. |
| 4 | * Copyright (c) 1982, 1989, 1993 |
| 5 | * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgement: |
| 17 | * This product includes software developed by the University of |
| 18 | * California, Berkeley and its contributors. |
| 19 | * 4. Neither the name of the University nor the names of its contributors |
| 20 | * may be used to endorse or promote products derived from this software |
| 21 | * without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 33 | * SUCH DAMAGE. |
| 34 | * |
| 35 | * from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp |
| 36 | * $FreeBSD: src/sys/net/if_fddisubr.c,v 1.41.2.8 2002/02/20 23:34:09 fjoe Exp $ |
| 37 | * $DragonFly: src/sys/net/Attic/if_fddisubr.c,v 1.5 2003/08/26 20:49:47 rob Exp $ |
| 38 | */ |
| 39 | |
| 40 | #include "opt_atalk.h" |
| 41 | #include "opt_inet.h" |
| 42 | #include "opt_inet6.h" |
| 43 | #include "opt_ipx.h" |
| 44 | |
| 45 | #include <sys/param.h> |
| 46 | #include <sys/systm.h> |
| 47 | #include <sys/mbuf.h> |
| 48 | #include <sys/socket.h> |
| 49 | #include <sys/malloc.h> |
| 50 | |
| 51 | #include <net/if.h> |
| 52 | #include <net/netisr.h> |
| 53 | #include <net/route.h> |
| 54 | #include <net/if_llc.h> |
| 55 | #include <net/if_dl.h> |
| 56 | #include <net/if_types.h> |
| 57 | |
| 58 | #if defined(INET) || defined(INET6) |
| 59 | #include <netinet/in.h> |
| 60 | #include <netinet/in_var.h> |
| 61 | #include <netinet/if_ether.h> |
| 62 | #endif |
| 63 | #ifdef INET6 |
| 64 | #include <netinet6/nd6.h> |
| 65 | #endif |
| 66 | #if defined(__FreeBSD__) |
| 67 | #include <netinet/if_fddi.h> |
| 68 | #else |
| 69 | #include <net/if_fddi.h> |
| 70 | #endif |
| 71 | |
| 72 | #ifdef IPX |
| 73 | #include <netproto/ipx/ipx.h> |
| 74 | #include <netproto/ipx/ipx_if.h> |
| 75 | #endif |
| 76 | |
| 77 | #ifdef NS |
| 78 | #include <netns/ns.h> |
| 79 | #include <netns/ns_if.h> |
| 80 | #endif |
| 81 | |
| 82 | #ifdef DECNET |
| 83 | #include <netdnet/dn.h> |
| 84 | #endif |
| 85 | |
| 86 | #ifdef NETATALK |
| 87 | #include <netproto/atalk/at.h> |
| 88 | #include <netproto/atalk/at_var.h> |
| 89 | #include <netproto/atalk/at_extern.h> |
| 90 | |
| 91 | #define llc_snap_org_code llc_un.type_snap.org_code |
| 92 | #define llc_snap_ether_type llc_un.type_snap.ether_type |
| 93 | |
| 94 | extern u_char at_org_code[ 3 ]; |
| 95 | extern u_char aarp_org_code[ 3 ]; |
| 96 | #endif /* NETATALK */ |
| 97 | |
| 98 | static int fddi_resolvemulti (struct ifnet *, struct sockaddr **, |
| 99 | struct sockaddr *); |
| 100 | |
| 101 | #define senderr(e) { error = (e); goto bad;} |
| 102 | |
| 103 | /* |
| 104 | * This really should be defined in if_llc.h but in case it isn't. |
| 105 | */ |
| 106 | #ifndef llc_snap |
| 107 | #define llc_snap llc_un.type_snap |
| 108 | #endif |
| 109 | |
| 110 | #if defined(__bsdi__) || defined(__NetBSD__) |
| 111 | #define RTALLOC1(a, b) rtalloc1(a, b) |
| 112 | #define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e) |
| 113 | #elif defined(__FreeBSD__) |
| 114 | #define RTALLOC1(a, b) rtalloc1(a, b, 0UL) |
| 115 | #define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f) |
| 116 | #endif |
| 117 | /* |
| 118 | * FDDI output routine. |
| 119 | * Encapsulate a packet of type family for the local net. |
| 120 | * Use trailer local net encapsulation if enough data in first |
| 121 | * packet leaves a multiple of 512 bytes of data in remainder. |
| 122 | * Assumes that ifp is actually pointer to arpcom structure. |
| 123 | */ |
| 124 | int |
| 125 | fddi_output(ifp, m, dst, rt0) |
| 126 | struct ifnet *ifp; |
| 127 | struct mbuf *m; |
| 128 | struct sockaddr *dst; |
| 129 | struct rtentry *rt0; |
| 130 | { |
| 131 | u_int16_t type; |
| 132 | int s, loop_copy = 0, error = 0, hdrcmplt = 0; |
| 133 | u_char esrc[6], edst[6]; |
| 134 | struct rtentry *rt; |
| 135 | struct fddi_header *fh; |
| 136 | struct arpcom *ac = (struct arpcom *)ifp; |
| 137 | |
| 138 | if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) |
| 139 | senderr(ENETDOWN); |
| 140 | getmicrotime(&ifp->if_lastchange); |
| 141 | #if !defined(__bsdi__) || _BSDI_VERSION >= 199401 |
| 142 | if ((rt = rt0) != NULL) { |
| 143 | if ((rt->rt_flags & RTF_UP) == 0) { |
| 144 | if ((rt0 = rt = RTALLOC1(dst, 1)) != NULL) |
| 145 | rt->rt_refcnt--; |
| 146 | else |
| 147 | senderr(EHOSTUNREACH); |
| 148 | } |
| 149 | if (rt->rt_flags & RTF_GATEWAY) { |
| 150 | if (rt->rt_gwroute == 0) |
| 151 | goto lookup; |
| 152 | if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { |
| 153 | rtfree(rt); rt = rt0; |
| 154 | lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1); |
| 155 | if ((rt = rt->rt_gwroute) == 0) |
| 156 | senderr(EHOSTUNREACH); |
| 157 | } |
| 158 | } |
| 159 | if (rt->rt_flags & RTF_REJECT) |
| 160 | if (rt->rt_rmx.rmx_expire == 0 || |
| 161 | time_second < rt->rt_rmx.rmx_expire) |
| 162 | senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); |
| 163 | } |
| 164 | #endif |
| 165 | switch (dst->sa_family) { |
| 166 | |
| 167 | #ifdef INET |
| 168 | case AF_INET: { |
| 169 | #if !defined(__bsdi__) || _BSDI_VERSION >= 199401 |
| 170 | if (!ARPRESOLVE(ifp, rt, m, dst, edst, rt0)) |
| 171 | return (0); /* if not yet resolved */ |
| 172 | #else |
| 173 | int usetrailers; |
| 174 | if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers)) |
| 175 | return (0); /* if not yet resolved */ |
| 176 | #endif |
| 177 | type = htons(ETHERTYPE_IP); |
| 178 | break; |
| 179 | } |
| 180 | #endif |
| 181 | #ifdef INET6 |
| 182 | case AF_INET6: |
| 183 | if (!nd6_storelladdr(&ac->ac_if, rt, m, dst, (u_char *)edst)) { |
| 184 | /* Something bad happened */ |
| 185 | return(0); |
| 186 | } |
| 187 | type = htons(ETHERTYPE_IPV6); |
| 188 | break; |
| 189 | #endif |
| 190 | #ifdef IPX |
| 191 | case AF_IPX: |
| 192 | type = htons(ETHERTYPE_IPX); |
| 193 | bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), |
| 194 | (caddr_t)edst, sizeof (edst)); |
| 195 | break; |
| 196 | #endif |
| 197 | #ifdef NETATALK |
| 198 | case AF_APPLETALK: { |
| 199 | struct at_ifaddr *aa; |
| 200 | if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) |
| 201 | return (0); |
| 202 | /* |
| 203 | * ifaddr is the first thing in at_ifaddr |
| 204 | */ |
| 205 | if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0) |
| 206 | goto bad; |
| 207 | |
| 208 | /* |
| 209 | * In the phase 2 case, we need to prepend an mbuf for the llc header. |
| 210 | * Since we must preserve the value of m, which is passed to us by |
| 211 | * value, we m_copy() the first mbuf, and use it for our llc header. |
| 212 | */ |
| 213 | if (aa->aa_flags & AFA_PHASE2) { |
| 214 | struct llc llc; |
| 215 | |
| 216 | M_PREPEND(m, sizeof(struct llc), M_WAIT); |
| 217 | if (m == 0) |
| 218 | senderr(ENOBUFS); |
| 219 | llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; |
| 220 | llc.llc_control = LLC_UI; |
| 221 | bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); |
| 222 | llc.llc_snap_ether_type = htons(ETHERTYPE_AT); |
| 223 | bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc)); |
| 224 | type = 0; |
| 225 | } else { |
| 226 | type = htons(ETHERTYPE_AT); |
| 227 | } |
| 228 | break; |
| 229 | } |
| 230 | #endif /* NETATALK */ |
| 231 | #ifdef NS |
| 232 | case AF_NS: |
| 233 | type = htons(ETHERTYPE_NS); |
| 234 | bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), |
| 235 | (caddr_t)edst, sizeof (edst)); |
| 236 | break; |
| 237 | #endif |
| 238 | |
| 239 | case pseudo_AF_HDRCMPLT: |
| 240 | { |
| 241 | struct ether_header *eh; |
| 242 | hdrcmplt = 1; |
| 243 | eh = (struct ether_header *)dst->sa_data; |
| 244 | (void)memcpy((caddr_t)esrc, (caddr_t)eh->ether_shost, sizeof (esrc)); |
| 245 | /* FALLTHROUGH */ |
| 246 | } |
| 247 | |
| 248 | case AF_UNSPEC: |
| 249 | { |
| 250 | struct ether_header *eh; |
| 251 | loop_copy = -1; |
| 252 | eh = (struct ether_header *)dst->sa_data; |
| 253 | (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); |
| 254 | if (*edst & 1) |
| 255 | m->m_flags |= (M_BCAST|M_MCAST); |
| 256 | type = eh->ether_type; |
| 257 | break; |
| 258 | } |
| 259 | |
| 260 | case AF_IMPLINK: |
| 261 | { |
| 262 | fh = mtod(m, struct fddi_header *); |
| 263 | error = EPROTONOSUPPORT; |
| 264 | switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { |
| 265 | case FDDIFC_LLC_ASYNC: { |
| 266 | /* legal priorities are 0 through 7 */ |
| 267 | if ((fh->fddi_fc & FDDIFC_Z) > 7) |
| 268 | goto bad; |
| 269 | break; |
| 270 | } |
| 271 | case FDDIFC_LLC_SYNC: { |
| 272 | /* FDDIFC_Z bits reserved, must be zero */ |
| 273 | if (fh->fddi_fc & FDDIFC_Z) |
| 274 | goto bad; |
| 275 | break; |
| 276 | } |
| 277 | case FDDIFC_SMT: { |
| 278 | /* FDDIFC_Z bits must be non zero */ |
| 279 | if ((fh->fddi_fc & FDDIFC_Z) == 0) |
| 280 | goto bad; |
| 281 | break; |
| 282 | } |
| 283 | default: { |
| 284 | /* anything else is too dangerous */ |
| 285 | goto bad; |
| 286 | } |
| 287 | } |
| 288 | error = 0; |
| 289 | if (fh->fddi_dhost[0] & 1) |
| 290 | m->m_flags |= (M_BCAST|M_MCAST); |
| 291 | goto queue_it; |
| 292 | } |
| 293 | default: |
| 294 | printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit, |
| 295 | dst->sa_family); |
| 296 | senderr(EAFNOSUPPORT); |
| 297 | } |
| 298 | |
| 299 | if (type != 0) { |
| 300 | struct llc *l; |
| 301 | M_PREPEND(m, sizeof (struct llc), M_DONTWAIT); |
| 302 | if (m == 0) |
| 303 | senderr(ENOBUFS); |
| 304 | l = mtod(m, struct llc *); |
| 305 | l->llc_control = LLC_UI; |
| 306 | l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; |
| 307 | l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; |
| 308 | (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type, |
| 309 | sizeof(u_int16_t)); |
| 310 | } |
| 311 | |
| 312 | /* |
| 313 | * Add local net header. If no space in first mbuf, |
| 314 | * allocate another. |
| 315 | */ |
| 316 | M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT); |
| 317 | if (m == 0) |
| 318 | senderr(ENOBUFS); |
| 319 | fh = mtod(m, struct fddi_header *); |
| 320 | fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; |
| 321 | (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst)); |
| 322 | queue_it: |
| 323 | if (hdrcmplt) |
| 324 | (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)esrc, |
| 325 | sizeof(fh->fddi_shost)); |
| 326 | else |
| 327 | (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr, |
| 328 | sizeof(fh->fddi_shost)); |
| 329 | /* |
| 330 | * If a simplex interface, and the packet is being sent to our |
| 331 | * Ethernet address or a broadcast address, loopback a copy. |
| 332 | * XXX To make a simplex device behave exactly like a duplex |
| 333 | * device, we should copy in the case of sending to our own |
| 334 | * ethernet address (thus letting the original actually appear |
| 335 | * on the wire). However, we don't do that here for security |
| 336 | * reasons and compatibility with the original behavior. |
| 337 | */ |
| 338 | if ((ifp->if_flags & IFF_SIMPLEX) && |
| 339 | (loop_copy != -1)) { |
| 340 | if ((m->m_flags & M_BCAST) || loop_copy) { |
| 341 | struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); |
| 342 | |
| 343 | (void) if_simloop(ifp, |
| 344 | n, dst->sa_family, sizeof(struct fddi_header)); |
| 345 | } else if (bcmp(fh->fddi_dhost, |
| 346 | fh->fddi_shost, sizeof(fh->fddi_shost)) == 0) { |
| 347 | (void) if_simloop(ifp, |
| 348 | m, dst->sa_family, sizeof(struct fddi_header)); |
| 349 | return(0); /* XXX */ |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | s = splimp(); |
| 354 | /* |
| 355 | * Queue message on interface, and start output if interface |
| 356 | * not yet active. |
| 357 | */ |
| 358 | if (IF_QFULL(&ifp->if_snd)) { |
| 359 | IF_DROP(&ifp->if_snd); |
| 360 | splx(s); |
| 361 | senderr(ENOBUFS); |
| 362 | } |
| 363 | ifp->if_obytes += m->m_pkthdr.len; |
| 364 | if (m->m_flags & M_MCAST) |
| 365 | ifp->if_omcasts++; |
| 366 | IF_ENQUEUE(&ifp->if_snd, m); |
| 367 | if ((ifp->if_flags & IFF_OACTIVE) == 0) |
| 368 | (*ifp->if_start)(ifp); |
| 369 | splx(s); |
| 370 | return (error); |
| 371 | |
| 372 | bad: |
| 373 | if (m) |
| 374 | m_freem(m); |
| 375 | return (error); |
| 376 | } |
| 377 | |
| 378 | /* |
| 379 | * Process a received FDDI packet; |
| 380 | * the packet is in the mbuf chain m without |
| 381 | * the fddi header, which is provided separately. |
| 382 | */ |
| 383 | void |
| 384 | fddi_input(ifp, fh, m) |
| 385 | struct ifnet *ifp; |
| 386 | struct fddi_header *fh; |
| 387 | struct mbuf *m; |
| 388 | { |
| 389 | struct ifqueue *inq; |
| 390 | struct llc *l; |
| 391 | int s; |
| 392 | |
| 393 | if ((ifp->if_flags & IFF_UP) == 0) { |
| 394 | m_freem(m); |
| 395 | return; |
| 396 | } |
| 397 | getmicrotime(&ifp->if_lastchange); |
| 398 | ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh); |
| 399 | if (fh->fddi_dhost[0] & 1) { |
| 400 | if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost, |
| 401 | sizeof(fddibroadcastaddr)) == 0) |
| 402 | m->m_flags |= M_BCAST; |
| 403 | else |
| 404 | m->m_flags |= M_MCAST; |
| 405 | ifp->if_imcasts++; |
| 406 | } else if ((ifp->if_flags & IFF_PROMISC) |
| 407 | && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost, |
| 408 | sizeof(fh->fddi_dhost)) != 0) { |
| 409 | m_freem(m); |
| 410 | return; |
| 411 | } |
| 412 | |
| 413 | #ifdef M_LINK0 |
| 414 | /* |
| 415 | * If this has a LLC priority of 0, then mark it so upper |
| 416 | * layers have a hint that it really came via a FDDI/Ethernet |
| 417 | * bridge. |
| 418 | */ |
| 419 | if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) |
| 420 | m->m_flags |= M_LINK0; |
| 421 | #endif |
| 422 | |
| 423 | l = mtod(m, struct llc *); |
| 424 | switch (l->llc_dsap) { |
| 425 | #if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) |
| 426 | case LLC_SNAP_LSAP: |
| 427 | { |
| 428 | u_int16_t type; |
| 429 | if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP) |
| 430 | goto dropanyway; |
| 431 | #ifdef NETATALK |
| 432 | if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code, |
| 433 | sizeof(at_org_code)) == 0 && |
| 434 | ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) { |
| 435 | inq = &atintrq2; |
| 436 | m_adj( m, sizeof( struct llc )); |
| 437 | schednetisr(NETISR_ATALK); |
| 438 | break; |
| 439 | } |
| 440 | |
| 441 | if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, |
| 442 | sizeof(aarp_org_code)) == 0 && |
| 443 | ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { |
| 444 | m_adj( m, sizeof( struct llc )); |
| 445 | aarpinput((struct arpcom *)ifp, m); /* XXX */ |
| 446 | return; |
| 447 | } |
| 448 | #endif /* NETATALK */ |
| 449 | if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0) |
| 450 | goto dropanyway; |
| 451 | type = ntohs(l->llc_snap.ether_type); |
| 452 | m_adj(m, 8); |
| 453 | switch (type) { |
| 454 | #ifdef INET |
| 455 | case ETHERTYPE_IP: |
| 456 | if (ipflow_fastforward(m)) |
| 457 | return; |
| 458 | schednetisr(NETISR_IP); |
| 459 | inq = &ipintrq; |
| 460 | break; |
| 461 | |
| 462 | case ETHERTYPE_ARP: |
| 463 | if (ifp->if_flags & IFF_NOARP) |
| 464 | goto dropanyway; |
| 465 | schednetisr(NETISR_ARP); |
| 466 | inq = &arpintrq; |
| 467 | break; |
| 468 | #endif |
| 469 | #ifdef INET6 |
| 470 | case ETHERTYPE_IPV6: |
| 471 | schednetisr(NETISR_IPV6); |
| 472 | inq = &ip6intrq; |
| 473 | break; |
| 474 | #endif |
| 475 | #ifdef IPX |
| 476 | case ETHERTYPE_IPX: |
| 477 | schednetisr(NETISR_IPX); |
| 478 | inq = &ipxintrq; |
| 479 | break; |
| 480 | #endif |
| 481 | #ifdef NS |
| 482 | case ETHERTYPE_NS: |
| 483 | schednetisr(NETISR_NS); |
| 484 | inq = &nsintrq; |
| 485 | break; |
| 486 | #endif |
| 487 | #ifdef DECNET |
| 488 | case ETHERTYPE_DECNET: |
| 489 | schednetisr(NETISR_DECNET); |
| 490 | inq = &decnetintrq; |
| 491 | break; |
| 492 | #endif |
| 493 | #ifdef NETATALK |
| 494 | case ETHERTYPE_AT: |
| 495 | schednetisr(NETISR_ATALK); |
| 496 | inq = &atintrq1; |
| 497 | break; |
| 498 | case ETHERTYPE_AARP: |
| 499 | /* probably this should be done with a NETISR as well */ |
| 500 | aarpinput((struct arpcom *)ifp, m); /* XXX */ |
| 501 | return; |
| 502 | #endif /* NETATALK */ |
| 503 | default: |
| 504 | /* printf("fddi_input: unknown protocol 0x%x\n", type); */ |
| 505 | ifp->if_noproto++; |
| 506 | goto dropanyway; |
| 507 | } |
| 508 | break; |
| 509 | } |
| 510 | #endif /* INET || NS */ |
| 511 | |
| 512 | default: |
| 513 | /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */ |
| 514 | ifp->if_noproto++; |
| 515 | dropanyway: |
| 516 | m_freem(m); |
| 517 | return; |
| 518 | } |
| 519 | |
| 520 | s = splimp(); |
| 521 | if (IF_QFULL(inq)) { |
| 522 | IF_DROP(inq); |
| 523 | m_freem(m); |
| 524 | } else |
| 525 | IF_ENQUEUE(inq, m); |
| 526 | splx(s); |
| 527 | } |
| 528 | /* |
| 529 | * Perform common duties while attaching to interface list |
| 530 | */ |
| 531 | #ifdef __NetBSD__ |
| 532 | #define ifa_next ifa_list.tqe_next |
| 533 | #endif |
| 534 | |
| 535 | void |
| 536 | fddi_ifattach(ifp) |
| 537 | struct ifnet *ifp; |
| 538 | { |
| 539 | struct ifaddr *ifa; |
| 540 | struct sockaddr_dl *sdl; |
| 541 | |
| 542 | ifp->if_type = IFT_FDDI; |
| 543 | ifp->if_addrlen = 6; |
| 544 | ifp->if_hdrlen = 21; |
| 545 | ifp->if_mtu = FDDIMTU; |
| 546 | ifp->if_resolvemulti = fddi_resolvemulti; |
| 547 | ifp->if_baudrate = 100000000; |
| 548 | #ifdef IFF_NOTRAILERS |
| 549 | ifp->if_flags |= IFF_NOTRAILERS; |
| 550 | #endif |
| 551 | #if defined(__FreeBSD__) |
| 552 | ifa = ifnet_addrs[ifp->if_index - 1]; |
| 553 | sdl = (struct sockaddr_dl *)ifa->ifa_addr; |
| 554 | sdl->sdl_type = IFT_FDDI; |
| 555 | sdl->sdl_alen = ifp->if_addrlen; |
| 556 | bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen); |
| 557 | #elif defined(__NetBSD__) |
| 558 | LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs); |
| 559 | for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next) |
| 560 | #else |
| 561 | for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next) |
| 562 | #endif |
| 563 | #if !defined(__FreeBSD__) |
| 564 | if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) && |
| 565 | sdl->sdl_family == AF_LINK) { |
| 566 | sdl->sdl_type = IFT_FDDI; |
| 567 | sdl->sdl_alen = ifp->if_addrlen; |
| 568 | bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr, |
| 569 | LLADDR(sdl), ifp->if_addrlen); |
| 570 | break; |
| 571 | } |
| 572 | #endif |
| 573 | } |
| 574 | |
| 575 | static int |
| 576 | fddi_resolvemulti(ifp, llsa, sa) |
| 577 | struct ifnet *ifp; |
| 578 | struct sockaddr **llsa; |
| 579 | struct sockaddr *sa; |
| 580 | { |
| 581 | struct sockaddr_dl *sdl; |
| 582 | struct sockaddr_in *sin; |
| 583 | #ifdef INET6 |
| 584 | struct sockaddr_in6 *sin6; |
| 585 | #endif |
| 586 | u_char *e_addr; |
| 587 | |
| 588 | switch(sa->sa_family) { |
| 589 | case AF_LINK: |
| 590 | /* |
| 591 | * No mapping needed. Just check that it's a valid MC address. |
| 592 | */ |
| 593 | sdl = (struct sockaddr_dl *)sa; |
| 594 | e_addr = LLADDR(sdl); |
| 595 | if ((e_addr[0] & 1) != 1) |
| 596 | return EADDRNOTAVAIL; |
| 597 | *llsa = 0; |
| 598 | return 0; |
| 599 | |
| 600 | #ifdef INET |
| 601 | case AF_INET: |
| 602 | sin = (struct sockaddr_in *)sa; |
| 603 | if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) |
| 604 | return EADDRNOTAVAIL; |
| 605 | MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, |
| 606 | M_WAITOK); |
| 607 | sdl->sdl_len = sizeof *sdl; |
| 608 | sdl->sdl_family = AF_LINK; |
| 609 | sdl->sdl_index = ifp->if_index; |
| 610 | sdl->sdl_type = IFT_FDDI; |
| 611 | sdl->sdl_nlen = 0; |
| 612 | sdl->sdl_alen = ETHER_ADDR_LEN; /* XXX */ |
| 613 | sdl->sdl_slen = 0; |
| 614 | e_addr = LLADDR(sdl); |
| 615 | ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); |
| 616 | *llsa = (struct sockaddr *)sdl; |
| 617 | return 0; |
| 618 | #endif |
| 619 | #ifdef INET6 |
| 620 | case AF_INET6: |
| 621 | sin6 = (struct sockaddr_in6 *)sa; |
| 622 | if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { |
| 623 | /* |
| 624 | * An IP6 address of 0 means listen to all |
| 625 | * of the Ethernet multicast address used for IP6. |
| 626 | * (This is used for multicast routers.) |
| 627 | */ |
| 628 | ifp->if_flags |= IFF_ALLMULTI; |
| 629 | *llsa = 0; |
| 630 | return 0; |
| 631 | } |
| 632 | if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) |
| 633 | return EADDRNOTAVAIL; |
| 634 | MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, |
| 635 | M_WAITOK); |
| 636 | sdl->sdl_len = sizeof *sdl; |
| 637 | sdl->sdl_family = AF_LINK; |
| 638 | sdl->sdl_index = ifp->if_index; |
| 639 | sdl->sdl_type = IFT_FDDI; |
| 640 | sdl->sdl_nlen = 0; |
| 641 | sdl->sdl_alen = ETHER_ADDR_LEN; /* XXX */ |
| 642 | sdl->sdl_slen = 0; |
| 643 | e_addr = LLADDR(sdl); |
| 644 | ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); |
| 645 | *llsa = (struct sockaddr *)sdl; |
| 646 | return 0; |
| 647 | #endif |
| 648 | |
| 649 | default: |
| 650 | /* |
| 651 | * Well, the text isn't quite right, but it's the name |
| 652 | * that counts... |
| 653 | */ |
| 654 | return EAFNOSUPPORT; |
| 655 | } |
| 656 | } |