bsd/net/ether_if_module.c

   1 /*
   2  * Copyright (c) 2000-2011 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1982, 1989, 1993
  30  *      The Regents of the University of California.  All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  */
  61
  62
  63
  64 #include <sys/param.h>
  65 #include <sys/systm.h>
  66 #include <sys/kernel.h>
  67 #include <sys/malloc.h>
  68 #include <sys/mbuf.h>
  69 #include <sys/socket.h>
  70 #include <sys/sockio.h>
  71 #include <sys/sysctl.h>
  72
  73 #include <pexpert/pexpert.h>
  74
  75 #define etherbroadcastaddr      fugly
  76 #include <net/if.h>
  77 #include <net/route.h>
  78 #include <net/if_llc.h>
  79 #include <net/if_dl.h>
  80 #include <net/if_types.h>
  81 #include <net/if_ether.h>
  82 #include <netinet/if_ether.h>
  83 #include <netinet/in.h> /* For M_LOOP */
  84 #include <net/kpi_interface.h>
  85 #include <net/kpi_protocol.h>
  86 #undef etherbroadcastaddr
  87
  88 /*
  89 #if INET
  90 #include <netinet/in.h>
  91 #include <netinet/in_var.h>
  92
  93 #include <netinet/in_systm.h>
  94 #include <netinet/ip.h>
  95 #endif
  96 */
  97 #include <net/ether_if_module.h>
  98 #include <sys/socketvar.h>
  99 #include <net/if_vlan_var.h>
 100 #if BOND
 101 #include <net/if_bond_internal.h>
 102 #endif /* BOND */
 103 #if IF_BRIDGE
 104 #include <net/if_bridgevar.h>
 105 #endif /* IF_BRIDGE */
 106
 107 #include <net/dlil.h>
 108
 109 #if LLC && CCITT
 110 extern struct ifqueue pkintrq;
 111 #endif
 112
 113 /* General stuff from if_ethersubr.c - may not need some of it */
 114
 115 #include <netat/at_pat.h>
 116 #if NETAT
 117 extern struct ifqueue atalkintrq;
 118 #endif
 119
 120
 121 #define memcpy(x,y,z)   bcopy(y, x, z)
 122
 123
 124 SYSCTL_DECL(_net_link);
 125 SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "Ethernet");
 126
 127 struct en_desc {
 128         u_int16_t       type;                   /* Type of protocol stored in data */
 129         u_int32_t               protocol_family;        /* Protocol family */
 130         u_int32_t               data[2];                /* Protocol data */
 131 };
 132
 133 /* descriptors are allocated in blocks of ETHER_DESC_BLK_SIZE */
 134 #if CONFIG_EMBEDDED
 135 #define ETHER_DESC_BLK_SIZE (2) /* IP, ARP */
 136 #else
 137 #define ETHER_DESC_BLK_SIZE (10)
 138 #endif
 139
 140 /*
 141  * Header for the demux list, hangs off of IFP at if_family_cookie
 142  */
 143
 144 struct ether_desc_blk_str {
 145         u_int32_t  n_max_used;
 146         u_int32_t       n_count;
 147         u_int32_t       n_used;
 148         struct en_desc  block_ptr[1];
 149 };
 150 /* Size of the above struct before the array of struct en_desc */
 151 #define ETHER_DESC_HEADER_SIZE  ((size_t)offsetof(struct ether_desc_blk_str, block_ptr))
 152 __private_extern__ u_char       etherbroadcastaddr[ETHER_ADDR_LEN] =
 153                                                                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 154
 155
 156 /*
 157  * Release all descriptor entries owned by this protocol (there may be several).
 158  * Setting the type to 0 releases the entry. Eventually we should compact-out
 159  * the unused entries.
 160  */
 161 int
 162 ether_del_proto(
 163         ifnet_t ifp,
 164         protocol_family_t protocol_family)
 165 {
 166         struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->if_family_cookie;
 167         u_int32_t       current = 0;
 168         int found = 0;
 169
 170         if (desc_blk == NULL)
 171                 return 0;
 172
 173         for (current = desc_blk->n_max_used; current > 0; current--) {
 174                 if (desc_blk->block_ptr[current - 1].protocol_family == protocol_family) {
 175                         found = 1;
 176                         desc_blk->block_ptr[current - 1].type = 0;
 177                         desc_blk->n_used--;
 178                 }
 179         }
 180
 181         if (desc_blk->n_used == 0) {
 182                 FREE(ifp->if_family_cookie, M_IFADDR);
 183                 ifp->if_family_cookie = 0;
 184         }
 185         else {
 186                 /* Decrement n_max_used */
 187                 for (; desc_blk->n_max_used > 0 && desc_blk->block_ptr[desc_blk->n_max_used - 1].type == 0; desc_blk->n_max_used--)
 188                         ;
 189         }
 190
 191         return 0;
 192  }
 193
 194
 195 static int
 196 ether_add_proto_internal(
 197         struct ifnet                                    *ifp,
 198         protocol_family_t                               protocol,
 199         const struct ifnet_demux_desc   *demux)
 200 {
 201         struct en_desc *ed;
 202         struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->if_family_cookie;
 203         u_int32_t i;
 204
 205         switch (demux->type) {
 206                 /* These types are supported */
 207                 /* Top three are preferred */
 208                 case DLIL_DESC_ETYPE2:
 209                         if (demux->datalen != 2) {
 210                                 return EINVAL;
 211                         }
 212                         break;
 213
 214                 case DLIL_DESC_SAP:
 215                         if (demux->datalen != 3) {
 216                                 return EINVAL;
 217                         }
 218                         break;
 219
 220                 case DLIL_DESC_SNAP:
 221                         if (demux->datalen != 5) {
 222                                 return EINVAL;
 223                         }
 224                         break;
 225
 226                 default:
 227                         return ENOTSUP;
 228         }
 229
 230         // Verify a matching descriptor does not exist.
 231         if (desc_blk != NULL) {
 232                 switch (demux->type) {
 233                         case DLIL_DESC_ETYPE2:
 234                                 for (i = 0; i < desc_blk->n_max_used; i++) {
 235                                         if (desc_blk->block_ptr[i].type == DLIL_DESC_ETYPE2 &&
 236                                                 desc_blk->block_ptr[i].data[0] ==
 237                                                 *(u_int16_t*)demux->data) {
 238                                                 return EADDRINUSE;
 239                                         }
 240                                 }
 241                                 break;
 242                         case DLIL_DESC_SAP:
 243                         case DLIL_DESC_SNAP:
 244                                 for (i = 0; i < desc_blk->n_max_used; i++) {
 245                                         if (desc_blk->block_ptr[i].type == demux->type &&
 246                                                 bcmp(desc_blk->block_ptr[i].data, demux->data,
 247                                                          demux->datalen) == 0) {
 248                                                 return EADDRINUSE;
 249                                         }
 250                                 }
 251                                 break;
 252                 }
 253         }
 254
 255         // Check for case where all of the descriptor blocks are in use
 256         if (desc_blk == NULL || desc_blk->n_used == desc_blk->n_count) {
 257                 struct ether_desc_blk_str *tmp;
 258                 u_int32_t       new_count = ETHER_DESC_BLK_SIZE;
 259                 u_int32_t       new_size;
 260                 u_int32_t       old_size = 0;
 261
 262                 i = 0;
 263
 264                 if (desc_blk) {
 265                         new_count += desc_blk->n_count;
 266                         old_size = desc_blk->n_count * sizeof(struct en_desc) + ETHER_DESC_HEADER_SIZE;
 267                         i = desc_blk->n_used;
 268                 }
 269
 270                 new_size = new_count * sizeof(struct en_desc) + ETHER_DESC_HEADER_SIZE;
 271
 272                 tmp = _MALLOC(new_size, M_IFADDR, M_WAITOK);
 273                 if (tmp  == 0) {
 274                         /*
 275                          * Remove any previous descriptors set in the call.
 276                          */
 277                         return ENOMEM;
 278                 }
 279
 280                 bzero(((char *)tmp) + old_size, new_size - old_size);
 281                 if (desc_blk) {
 282                         bcopy(desc_blk, tmp, old_size);
 283                         FREE(desc_blk, M_IFADDR);
 284                 }
 285                 desc_blk = tmp;
 286                 ifp->if_family_cookie = (uintptr_t)desc_blk;
 287                 desc_blk->n_count = new_count;
 288         }
 289         else {
 290                 /* Find a free entry */
 291                 for (i = 0; i < desc_blk->n_count; i++) {
 292                         if (desc_blk->block_ptr[i].type == 0) {
 293                                 break;
 294                         }
 295                 }
 296         }
 297
 298         /* Bump n_max_used if appropriate */
 299         if (i + 1 > desc_blk->n_max_used) {
 300                 desc_blk->n_max_used = i + 1;
 301         }
 302
 303         ed = &desc_blk->block_ptr[i];
 304         ed->protocol_family = protocol;
 305         ed->data[0] = 0;
 306         ed->data[1] = 0;
 307
 308         switch (demux->type) {
 309                 case DLIL_DESC_ETYPE2:
 310                         /* 2 byte ethernet raw protocol type is at native_type */
 311                         /* prtocol must be in network byte order */
 312                         ed->type = DLIL_DESC_ETYPE2;
 313                         ed->data[0] = *(u_int16_t*)demux->data;
 314                         break;
 315
 316                 case DLIL_DESC_SAP:
 317                         ed->type = DLIL_DESC_SAP;
 318                         bcopy(demux->data, &ed->data[0], 3);
 319                         break;
 320
 321                 case DLIL_DESC_SNAP: {
 322                         u_int8_t*       pDest = ((u_int8_t*)&ed->data[0]) + 3;
 323                         ed->type = DLIL_DESC_SNAP;
 324                         bcopy(demux->data, pDest, 5);
 325                         }
 326                         break;
 327         }
 328
 329         desc_blk->n_used++;
 330
 331         return 0;
 332 }
 333
 334 int
 335 ether_add_proto(
 336         ifnet_t                         ifp,
 337         protocol_family_t       protocol,
 338         const struct ifnet_demux_desc *demux_list,
 339         u_int32_t                       demux_count)
 340 {
 341         int                     error = 0;
 342         u_int32_t       i;
 343
 344         for (i = 0; i < demux_count; i++) {
 345                 error = ether_add_proto_internal(ifp, protocol, &demux_list[i]);
 346                 if (error) {
 347                         ether_del_proto(ifp, protocol);
 348                         break;
 349                 }
 350         }
 351
 352         return error;
 353 }
 354
 355 int
 356 ether_demux(
 357         ifnet_t                         ifp,
 358         mbuf_t                          m,
 359         char                            *frame_header,
 360         protocol_family_t       *protocol_family)
 361 {
 362         struct ether_header *eh = (struct ether_header *)(void *)frame_header;
 363         u_short                 ether_type = eh->ether_type;
 364         u_int16_t               type;
 365         u_int8_t                *data;
 366         u_int32_t                       i = 0;
 367         struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->if_family_cookie;
 368         u_int32_t                       maxd = desc_blk ? desc_blk->n_max_used : 0;
 369         struct en_desc  *ed = desc_blk ? desc_blk->block_ptr : NULL;
 370         u_int32_t               extProto1 = 0;
 371         u_int32_t               extProto2 = 0;
 372
 373         if (eh->ether_dhost[0] & 1) {
 374                 /* Check for broadcast */
 375                 if (_ether_cmp(etherbroadcastaddr, eh->ether_dhost) == 0)
 376                         m->m_flags |= M_BCAST;
 377                 else
 378                         m->m_flags |= M_MCAST;
 379         }
 380
 381         if (m->m_flags & M_HASFCS) {
 382                 /*
 383                  * If the M_HASFCS is set by the driver we want to make sure
 384                  * that we strip off the trailing FCS data before handing it
 385                  * up the stack.
 386                  */
 387                 m_adj(m, -ETHER_CRC_LEN);
 388                 m->m_flags &= ~M_HASFCS;
 389         }
 390
 391         if (ifp->if_eflags & IFEF_BOND) {
 392                 /* if we're bonded, bond "protocol" gets all the packets */
 393                 *protocol_family = PF_BOND;
 394                 return (0);
 395         }
 396
 397         if ((eh->ether_dhost[0] & 1) == 0) {
 398                 /*
 399                  * When the driver is put into promiscuous mode we may receive unicast
 400                  * frames that are not intended for our interfaces.  They are marked here
 401                  * as being promiscuous so the caller may dispose of them after passing
 402                  * the packets to any interface filters.
 403                  */
 404                 if (_ether_cmp(eh->ether_dhost, ifnet_lladdr(ifp))) {
 405                         m->m_flags |= M_PROMISC;
 406                 }
 407         }
 408
 409         /* check for VLAN */
 410         if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) != 0) {
 411                 if (EVL_VLANOFTAG(m->m_pkthdr.vlan_tag) != 0) {
 412                         *protocol_family = PF_VLAN;
 413                         return (0);
 414                 }
 415                 /* the packet is just priority-tagged, clear the bit */
 416                 m->m_pkthdr.csum_flags &= ~CSUM_VLAN_TAG_VALID;
 417         }
 418         else if (ether_type == htons(ETHERTYPE_VLAN)) {
 419                 struct ether_vlan_header *      evl;
 420
 421                 evl = (struct ether_vlan_header *)(void *)frame_header;
 422                 if (m->m_len < ETHER_VLAN_ENCAP_LEN
 423                     || ntohs(evl->evl_proto) == ETHERTYPE_VLAN
 424                     || EVL_VLANOFTAG(ntohs(evl->evl_tag)) != 0) {
 425                         *protocol_family = PF_VLAN;
 426                         return 0;
 427                 }
 428                 /* the packet is just priority-tagged */
 429
 430                 /* make the encapsulated ethertype the actual ethertype */
 431                 ether_type = evl->evl_encap_proto = evl->evl_proto;
 432
 433                 /* remove the encapsulation header */
 434                 m->m_len -= ETHER_VLAN_ENCAP_LEN;
 435                 m->m_data += ETHER_VLAN_ENCAP_LEN;
 436                 m->m_pkthdr.len -= ETHER_VLAN_ENCAP_LEN;
 437                 m->m_pkthdr.csum_flags = 0; /* can't trust hardware checksum */
 438         }
 439
 440         data = mtod(m, u_int8_t*);
 441
 442         /*
 443         * Determine the packet's protocol type and stuff the protocol into
 444         * longs for quick compares.
 445         */
 446
 447         if (ntohs(ether_type) <= 1500) {
 448                 bcopy(data, &extProto1, sizeof (u_int32_t));
 449
 450                 // SAP or SNAP
 451                 if ((extProto1 & htonl(0xFFFFFF00)) == htonl(0xAAAA0300)) {
 452                         // SNAP
 453                         type = DLIL_DESC_SNAP;
 454                         bcopy(data + sizeof(u_int32_t), &extProto2, sizeof (u_int32_t));
 455                         extProto1 &= htonl(0x000000FF);
 456                 } else {
 457                         type = DLIL_DESC_SAP;
 458                         extProto1 &= htonl(0xFFFFFF00);
 459                 }
 460         } else {
 461                 type = DLIL_DESC_ETYPE2;
 462         }
 463
 464         /*
 465         * Search through the connected protocols for a match.
 466         */
 467
 468         switch (type) {
 469                 case DLIL_DESC_ETYPE2:
 470                         for (i = 0; i < maxd; i++) {
 471                                 if ((ed[i].type == type) && (ed[i].data[0] == ether_type)) {
 472                                         *protocol_family = ed[i].protocol_family;
 473                                         return 0;
 474                                 }
 475                         }
 476                         break;
 477
 478                 case DLIL_DESC_SAP:
 479                         for (i = 0; i < maxd; i++) {
 480                                 if ((ed[i].type == type) && (ed[i].data[0] == extProto1)) {
 481                                         *protocol_family = ed[i].protocol_family;
 482                                         return 0;
 483                                 }
 484                         }
 485                         break;
 486
 487                 case DLIL_DESC_SNAP:
 488                         for (i = 0; i < maxd; i++) {
 489                                 if ((ed[i].type == type) && (ed[i].data[0] == extProto1) &&
 490                                         (ed[i].data[1] == extProto2)) {
 491                                         *protocol_family = ed[i].protocol_family;
 492                                         return 0;
 493                                 }
 494                         }
 495                 break;
 496         }
 497
 498         return ENOENT;
 499 }
 500
 501 /*
 502  * Ethernet output routine.
 503  * Encapsulate a packet of type family for the local net.
 504  * Use trailer local net encapsulation if enough data in first
 505  * packet leaves a multiple of 512 bytes of data in remainder.
 506  */
 507 int
 508 ether_frameout(
 509                            struct ifnet                 *ifp,
 510                            struct mbuf                          **m,
 511                            const struct sockaddr        *ndest,
 512                            const char                           *edst,
 513                            const char                           *ether_type
 514 #if KPI_INTERFACE_EMBEDDED
 515                            ,
 516                            u_int32_t                            *prepend_len,
 517                            u_int32_t                            *postpend_len
 518 #endif /* KPI_INTERFACE_EMBEDDED */
 519                            )
 520 {
 521         struct ether_header *eh;
 522         int hlen;       /* link layer header length */
 523
 524         hlen = ETHER_HDR_LEN;
 525
 526         /*
 527          * If a simplex interface, and the packet is being sent to our
 528          * Ethernet address or a broadcast address, loopback a copy.
 529          * XXX To make a simplex device behave exactly like a duplex
 530          * device, we should copy in the case of sending to our own
 531          * ethernet address (thus letting the original actually appear
 532          * on the wire). However, we don't do that here for security
 533          * reasons and compatibility with the original behavior.
 534          */
 535         if ((ifp->if_flags & IFF_SIMPLEX) &&
 536             ((*m)->m_flags & M_LOOP)) {
 537             if (lo_ifp) {
 538             if ((*m)->m_flags & M_BCAST) {
 539                 struct mbuf *n = m_copy(*m, 0, (int)M_COPYALL);
 540                 if (n != NULL)
 541                     dlil_output(lo_ifp, ndest->sa_family, n, NULL, ndest, 0, NULL);
 542             }
 543             else {
 544                                         if (_ether_cmp(edst, ifnet_lladdr(ifp)) == 0) {
 545                     dlil_output(lo_ifp, ndest->sa_family, *m, NULL, ndest, 0, NULL);
 546                     return EJUSTRETURN;
 547                 }
 548             }
 549             }
 550         }
 551
 552         /*
 553          * Add local net header.  If no space in first mbuf,
 554          * allocate another.
 555          */
 556         M_PREPEND(*m, sizeof (struct ether_header), M_DONTWAIT);
 557         if (*m == 0) {
 558             return (EJUSTRETURN);
 559         }
 560
 561 #if KPI_INTERFACE_EMBEDDED
 562         *prepend_len = sizeof (struct ether_header);
 563         *postpend_len = 0;
 564 #endif /* KPI_INTERFACE_EMBEDDED */
 565
 566         eh = mtod(*m, struct ether_header *);
 567         (void)memcpy(&eh->ether_type, ether_type,
 568                 sizeof(eh->ether_type));
 569         (void)memcpy(eh->ether_dhost, edst, ETHER_ADDR_LEN);
 570         ifnet_lladdr_copy_bytes(ifp, eh->ether_shost, ETHER_ADDR_LEN);
 571
 572         return 0;
 573 }
 574
 575 errno_t
 576 ether_check_multi(
 577         __unused ifnet_t                ifp,
 578         const struct sockaddr   *proto_addr)
 579 {
 580         errno_t result = EAFNOSUPPORT;
 581         const u_char *e_addr;
 582
 583         /*
 584          * AF_SPEC and AF_LINK don't require translation. We do
 585          * want to verify that they specify a valid multicast.
 586          */
 587         switch(proto_addr->sa_family) {
 588                 case AF_UNSPEC:
 589                         e_addr = (const u_char*)&proto_addr->sa_data[0];
 590                         if ((e_addr[0] & 0x01) != 0x01)
 591                                 result = EADDRNOTAVAIL;
 592                         else
 593                                 result = 0;
 594                         break;
 595
 596                 case AF_LINK:
 597                         e_addr = CONST_LLADDR((const struct sockaddr_dl*)
 598                             (uintptr_t)(size_t)proto_addr);
 599                         if ((e_addr[0] & 0x01) != 0x01)
 600                                 result = EADDRNOTAVAIL;
 601                         else
 602                                 result = 0;
 603                         break;
 604         }
 605
 606         return result;
 607 }
 608
 609 int
 610 ether_ioctl(
 611     __unused ifnet_t    ifp,
 612     __unused u_int32_t  command,
 613     __unused void*              data)
 614 {
 615         return EOPNOTSUPP;
 616 }
 617
 618 __private_extern__ int ether_family_init(void)
 619 {
 620         errno_t error = 0;
 621
 622         /* Register protocol registration functions */
 623         if ((error = proto_register_plumber(PF_INET, APPLE_IF_FAM_ETHERNET,
 624                                                                           ether_attach_inet, ether_detach_inet)) != 0) {
 625                 printf("proto_register_plumber failed for PF_INET error=%d\n", error);
 626                 goto done;
 627         }
 628 #if INET6
 629         if ((error = proto_register_plumber(PF_INET6, APPLE_IF_FAM_ETHERNET,
 630                                                                           ether_attach_inet6, ether_detach_inet6)) != 0) {
 631                 printf("proto_register_plumber failed for PF_INET6 error=%d\n", error);
 632                 goto done;
 633         }
 634 #endif /* INET6 */
 635 #if NETAT
 636         if ((error = proto_register_plumber(PF_APPLETALK, APPLE_IF_FAM_ETHERNET,
 637                                                                           ether_attach_at, ether_detach_at)) != 0) {
 638                 printf("proto_register_plumber failed PF_APPLETALK error=%d\n", error);
 639                 goto done;
 640         }
 641 #endif /* NETAT */
 642 #if VLAN
 643         vlan_family_init();
 644 #endif /* VLAN */
 645 #if BOND
 646         bond_family_init();
 647 #endif /* BOND */
 648 #if IF_BRIDGE
 649         bridgeattach(0);
 650 #endif /* IF_BRIDGE */
 651
 652  done:
 653
 654     return (error);
 655 }