bsd/net/ether_if_module.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1982, 1989, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  */
  56
  57
  58
  59 #include <sys/param.h>
  60 #include <sys/systm.h>
  61 #include <sys/kernel.h>
  62 #include <sys/malloc.h>
  63 #include <sys/mbuf.h>
  64 #include <sys/socket.h>
  65 #include <sys/sockio.h>
  66 #include <sys/sysctl.h>
  67
  68 #include <net/if.h>
  69 #include <net/route.h>
  70 #include <net/if_llc.h>
  71 #include <net/if_dl.h>
  72 #include <net/if_types.h>
  73 #include <net/if_ether.h>
  74 #include <netinet/if_ether.h>
  75 #include <netinet/in.h> /* For M_LOOP */
  76
  77 /*
  78 #if INET
  79 #include <netinet/in.h>
  80 #include <netinet/in_var.h>
  81
  82 #include <netinet/in_systm.h>
  83 #include <netinet/ip.h>
  84 #endif
  85 */
  86
  87 #include <sys/socketvar.h>
  88 #include <net/if_vlan_var.h>
  89 #include <net/if_bond_var.h>
  90
  91 #include <net/dlil.h>
  92
  93 #if LLC && CCITT
  94 extern struct ifqueue pkintrq;
  95 #endif
  96
  97 /* General stuff from if_ethersubr.c - may not need some of it */
  98
  99 #include <netat/at_pat.h>
 100 #if NETAT
 101 extern struct ifqueue atalkintrq;
 102 #endif
 103
 104
 105 #if BRIDGE
 106 #include <net/bridge.h>
 107 #endif
 108
 109 #define memcpy(x,y,z)   bcopy(y, x, z)
 110
 111
 112 SYSCTL_DECL(_net_link);
 113 SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet");
 114
 115 struct en_desc {
 116         u_int16_t       type;                   /* Type of protocol stored in data */
 117         u_long          protocol_family;        /* Protocol family */
 118         u_long          data[2];                /* Protocol data */
 119 };
 120 /* descriptors are allocated in blocks of ETHER_DESC_BLK_SIZE */
 121 #define ETHER_DESC_BLK_SIZE (10)
 122
 123 /*
 124  * Header for the demux list, hangs off of IFP at family_cookie
 125  */
 126
 127 struct ether_desc_blk_str {
 128         u_long  n_max_used;
 129         u_long  n_count;
 130         u_long  n_used;
 131         struct en_desc  block_ptr[1];
 132 };
 133 /* Size of the above struct before the array of struct en_desc */
 134 #define ETHER_DESC_HEADER_SIZE  ((size_t)&(((struct ether_desc_blk_str*)0)->block_ptr[0]))
 135 __private_extern__ u_char       etherbroadcastaddr[ETHER_ADDR_LEN] =
 136                                                                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 137
 138 int ether_add_proto_old(struct ifnet *ifp, u_long protocol_family, struct ddesc_head_str *desc_head);
 139 int ether_add_if(struct ifnet *ifp);
 140 int ether_del_if(struct ifnet *ifp);
 141 int ether_init_if(struct ifnet *ifp);
 142 int ether_family_init(void);
 143
 144 /*
 145  * Release all descriptor entries owned by this protocol (there may be several).
 146  * Setting the type to 0 releases the entry. Eventually we should compact-out
 147  * the unused entries.
 148  */
 149 int
 150 ether_del_proto(
 151         ifnet_t ifp,
 152         protocol_family_t protocol_family)
 153 {
 154         struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->family_cookie;
 155         u_long  current = 0;
 156         int found = 0;
 157
 158         if (desc_blk == NULL)
 159                 return 0;
 160
 161         for (current = desc_blk->n_max_used; current > 0; current--) {
 162                 if (desc_blk->block_ptr[current - 1].protocol_family == protocol_family) {
 163                         found = 1;
 164                         desc_blk->block_ptr[current - 1].type = 0;
 165                         desc_blk->n_used--;
 166                 }
 167         }
 168
 169         if (desc_blk->n_used == 0) {
 170                 FREE(ifp->family_cookie, M_IFADDR);
 171                 ifp->family_cookie = 0;
 172         }
 173         else {
 174                 /* Decrement n_max_used */
 175                 for (; desc_blk->n_max_used > 0 && desc_blk->block_ptr[desc_blk->n_max_used - 1].type == 0; desc_blk->n_max_used--)
 176                         ;
 177         }
 178
 179         return 0;
 180  }
 181
 182
 183 static int
 184 ether_add_proto_internal(
 185         struct ifnet                                    *ifp,
 186         protocol_family_t                               protocol,
 187         const struct ifnet_demux_desc   *demux)
 188 {
 189         struct en_desc *ed;
 190         struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->family_cookie;
 191         u_int32_t i;
 192
 193         switch (demux->type) {
 194                 /* These types are supported */
 195                 /* Top three are preferred */
 196                 case DLIL_DESC_ETYPE2:
 197                         if (demux->datalen != 2) {
 198                                 return EINVAL;
 199                         }
 200                         break;
 201
 202                 case DLIL_DESC_SAP:
 203                         if (demux->datalen != 3) {
 204                                 return EINVAL;
 205                         }
 206                         break;
 207
 208                 case DLIL_DESC_SNAP:
 209                         if (demux->datalen != 5) {
 210                                 return EINVAL;
 211                         }
 212                         break;
 213
 214                 default:
 215                         return ENOTSUP;
 216         }
 217
 218         // Verify a matching descriptor does not exist.
 219         if (desc_blk != NULL) {
 220                 switch (demux->type) {
 221                         case DLIL_DESC_ETYPE2:
 222                                 for (i = 0; i < desc_blk->n_max_used; i++) {
 223                                         if (desc_blk->block_ptr[i].type == DLIL_DESC_ETYPE2 &&
 224                                                 desc_blk->block_ptr[i].data[0] ==
 225                                                 *(u_int16_t*)demux->data) {
 226                                                 return EADDRINUSE;
 227                                         }
 228                                 }
 229                                 break;
 230                         case DLIL_DESC_SAP:
 231                         case DLIL_DESC_SNAP:
 232                                 for (i = 0; i < desc_blk->n_max_used; i++) {
 233                                         if (desc_blk->block_ptr[i].type == demux->type &&
 234                                                 bcmp(desc_blk->block_ptr[i].data, demux->data,
 235                                                          demux->datalen) == 0) {
 236                                                 return EADDRINUSE;
 237                                         }
 238                                 }
 239                                 break;
 240                 }
 241         }
 242
 243         // Check for case where all of the descriptor blocks are in use
 244         if (desc_blk == NULL || desc_blk->n_used == desc_blk->n_count) {
 245                 struct ether_desc_blk_str *tmp;
 246                 u_long  new_count = ETHER_DESC_BLK_SIZE;
 247                 u_long  new_size;
 248                 u_long  old_size = 0;
 249
 250                 i = 0;
 251
 252                 if (desc_blk) {
 253                         new_count += desc_blk->n_count;
 254                         old_size = desc_blk->n_count * sizeof(struct en_desc) + ETHER_DESC_HEADER_SIZE;
 255                         i = desc_blk->n_used;
 256                 }
 257
 258                 new_size = new_count * sizeof(struct en_desc) + ETHER_DESC_HEADER_SIZE;
 259
 260                 tmp = _MALLOC(new_size, M_IFADDR, M_WAITOK);
 261                 if (tmp  == 0) {
 262                         /*
 263                          * Remove any previous descriptors set in the call.
 264                          */
 265                         return ENOMEM;
 266                 }
 267
 268                 bzero(tmp + old_size, new_size - old_size);
 269                 if (desc_blk) {
 270                         bcopy(desc_blk, tmp, old_size);
 271                         FREE(desc_blk, M_IFADDR);
 272                 }
 273                 desc_blk = tmp;
 274                 ifp->family_cookie = (u_long)desc_blk;
 275                 desc_blk->n_count = new_count;
 276         }
 277         else {
 278                 /* Find a free entry */
 279                 for (i = 0; i < desc_blk->n_count; i++) {
 280                         if (desc_blk->block_ptr[i].type == 0) {
 281                                 break;
 282                         }
 283                 }
 284         }
 285
 286         /* Bump n_max_used if appropriate */
 287         if (i + 1 > desc_blk->n_max_used) {
 288                 desc_blk->n_max_used = i + 1;
 289         }
 290
 291         ed = &desc_blk->block_ptr[i];
 292         ed->protocol_family = protocol;
 293         ed->data[0] = 0;
 294         ed->data[1] = 0;
 295
 296         switch (demux->type) {
 297                 case DLIL_DESC_ETYPE2:
 298                         /* 2 byte ethernet raw protocol type is at native_type */
 299                         /* prtocol must be in network byte order */
 300                         ed->type = DLIL_DESC_ETYPE2;
 301                         ed->data[0] = *(u_int16_t*)demux->data;
 302                         break;
 303
 304                 case DLIL_DESC_SAP:
 305                         ed->type = DLIL_DESC_SAP;
 306                         bcopy(demux->data, &ed->data[0], 3);
 307                         break;
 308
 309                 case DLIL_DESC_SNAP: {
 310                         u_int8_t*       pDest = ((u_int8_t*)&ed->data[0]) + 3;
 311                         ed->type = DLIL_DESC_SNAP;
 312                         bcopy(demux->data, pDest, 5);
 313                         }
 314                         break;
 315         }
 316
 317         desc_blk->n_used++;
 318
 319         return 0;
 320 }
 321
 322 int
 323 ether_add_proto(
 324         ifnet_t                         ifp,
 325         protocol_family_t       protocol,
 326         const struct ifnet_demux_desc *demux_list,
 327         u_int32_t                       demux_count)
 328 {
 329         int                     error = 0;
 330         u_int32_t       i;
 331
 332         for (i = 0; i < demux_count; i++) {
 333                 error = ether_add_proto_internal(ifp, protocol, &demux_list[i]);
 334                 if (error) {
 335                         ether_del_proto(ifp, protocol);
 336                         break;
 337                 }
 338         }
 339
 340         return error;
 341 }
 342
 343 __private_extern__ int
 344 ether_add_proto_old(
 345         struct ifnet *ifp,
 346         u_long protocol_family,
 347         struct ddesc_head_str *desc_head)
 348 {
 349         struct dlil_demux_desc  *desc;
 350         int error = 0;
 351
 352         TAILQ_FOREACH(desc, desc_head, next) {
 353                 struct ifnet_demux_desc dmx;
 354                 int swapped = 0;
 355
 356                 // Convert dlil_demux_desc to ifnet_demux_desc
 357                 dmx.type = desc->type;
 358                 dmx.datalen = desc->variants.native_type_length;
 359                 dmx.data = desc->native_type;
 360
 361 #ifdef DLIL_DESC_RAW
 362                 if (dmx.type == DLIL_DESC_RAW) {
 363                         swapped = 1;
 364                         dmx.type = DLIL_DESC_ETYPE2;
 365                         dmx.datalen = 2;
 366                         *(u_int16_t*)dmx.data = htons(*(u_int16_t*)dmx.data);
 367                 }
 368 #endif
 369
 370                 error = ether_add_proto_internal(ifp, protocol_family, &dmx);
 371                 if (swapped) {
 372                         *(u_int16_t*)dmx.data = ntohs(*(u_int16_t*)dmx.data);
 373                         swapped = 0;
 374                 }
 375                 if (error) {
 376                         ether_del_proto(ifp, protocol_family);
 377                         break;
 378                 }
 379         }
 380
 381         return error;
 382 }
 383
 384
 385 static int
 386 ether_shutdown(void)
 387 {
 388     return 0;
 389 }
 390
 391
 392 int
 393 ether_demux(
 394         ifnet_t                         ifp,
 395         mbuf_t                          m,
 396         char                            *frame_header,
 397         protocol_family_t       *protocol_family)
 398 {
 399         struct ether_header *eh = (struct ether_header *)frame_header;
 400         u_short                 ether_type = eh->ether_type;
 401         u_int16_t               type;
 402         u_int8_t                *data;
 403         u_long                  i = 0;
 404         struct ether_desc_blk_str *desc_blk = (struct ether_desc_blk_str *)ifp->family_cookie;
 405         u_long                  maxd = desc_blk ? desc_blk->n_max_used : 0;
 406         struct en_desc  *ed = desc_blk ? desc_blk->block_ptr : NULL;
 407         u_int32_t               extProto1 = 0;
 408         u_int32_t               extProto2 = 0;
 409
 410         if (eh->ether_dhost[0] & 1) {
 411                 /* Check for broadcast */
 412                 if (*(u_int32_t*)eh->ether_dhost == 0xFFFFFFFF &&
 413                         *(u_int16_t*)(eh->ether_dhost + sizeof(u_int32_t)) == 0xFFFF)
 414                         m->m_flags |= M_BCAST;
 415                 else
 416                         m->m_flags |= M_MCAST;
 417         }
 418
 419         if (ifp->if_eflags & IFEF_BOND) {
 420                 /* if we're bonded, bond "protocol" gets all the packets */
 421                 *protocol_family = PF_BOND;
 422                 return (0);
 423         }
 424
 425         if ((eh->ether_dhost[0] & 1) == 0) {
 426                 /*
 427                 * When the driver is put into promiscuous mode we may receive unicast
 428                 * frames that are not intended for our interfaces.  They are marked here
 429                 * as being promiscuous so the caller may dispose of them after passing
 430                 * the packets to any interface filters.
 431                 */
 432                 #define ETHER_CMP(x, y) ( ((u_int16_t *) x)[0] != ((u_int16_t *) y)[0] || \
 433                                                                   ((u_int16_t *) x)[1] != ((u_int16_t *) y)[1] || \
 434                                                                   ((u_int16_t *) x)[2] != ((u_int16_t *) y)[2] )
 435
 436                 if (ETHER_CMP(eh->ether_dhost, ifnet_lladdr(ifp))) {
 437                         m->m_flags |= M_PROMISC;
 438                 }
 439         }
 440
 441         /* Quick check for VLAN */
 442         if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) != 0 ||
 443                 ether_type == htons(ETHERTYPE_VLAN)) {
 444                 *protocol_family = PF_VLAN;
 445                 return 0;
 446         }
 447
 448         data = mtod(m, u_int8_t*);
 449
 450         /*
 451         * Determine the packet's protocol type and stuff the protocol into
 452         * longs for quick compares.
 453         */
 454
 455         if (ntohs(ether_type) <= 1500) {
 456                 extProto1 = *(u_int32_t*)data;
 457
 458                 // SAP or SNAP
 459                 if ((extProto1 & htonl(0xFFFFFF00)) == htonl(0xAAAA0300)) {
 460                         // SNAP
 461                         type = DLIL_DESC_SNAP;
 462                         extProto2 = *(u_int32_t*)(data + sizeof(u_int32_t));
 463                         extProto1 &= htonl(0x000000FF);
 464                 } else {
 465                         type = DLIL_DESC_SAP;
 466                         extProto1 &= htonl(0xFFFFFF00);
 467                 }
 468         } else {
 469                 type = DLIL_DESC_ETYPE2;
 470         }
 471
 472         /*
 473         * Search through the connected protocols for a match.
 474         */
 475
 476         switch (type) {
 477                 case DLIL_DESC_ETYPE2:
 478                         for (i = 0; i < maxd; i++) {
 479                                 if ((ed[i].type == type) && (ed[i].data[0] == ether_type)) {
 480                                         *protocol_family = ed[i].protocol_family;
 481                                         return 0;
 482                                 }
 483                         }
 484                         break;
 485
 486                 case DLIL_DESC_SAP:
 487                         for (i = 0; i < maxd; i++) {
 488                                 if ((ed[i].type == type) && (ed[i].data[0] == extProto1)) {
 489                                         *protocol_family = ed[i].protocol_family;
 490                                         return 0;
 491                                 }
 492                         }
 493                         break;
 494
 495                 case DLIL_DESC_SNAP:
 496                         for (i = 0; i < maxd; i++) {
 497                                 if ((ed[i].type == type) && (ed[i].data[0] == extProto1) &&
 498                                         (ed[i].data[1] == extProto2)) {
 499                                         *protocol_family = ed[i].protocol_family;
 500                                         return 0;
 501                                 }
 502                         }
 503                 break;
 504         }
 505
 506         return ENOENT;
 507 }
 508
 509 /*
 510  * Ethernet output routine.
 511  * Encapsulate a packet of type family for the local net.
 512  * Use trailer local net encapsulation if enough data in first
 513  * packet leaves a multiple of 512 bytes of data in remainder.
 514  */
 515 int
 516 ether_frameout(
 517         struct ifnet                    *ifp,
 518         struct mbuf                             **m,
 519         const struct sockaddr   *ndest,
 520         const char                              *edst,
 521         const char                              *ether_type)
 522 {
 523         struct ether_header *eh;
 524         int hlen;       /* link layer header length */
 525
 526         hlen = ETHER_HDR_LEN;
 527
 528         /*
 529          * If a simplex interface, and the packet is being sent to our
 530          * Ethernet address or a broadcast address, loopback a copy.
 531          * XXX To make a simplex device behave exactly like a duplex
 532          * device, we should copy in the case of sending to our own
 533          * ethernet address (thus letting the original actually appear
 534          * on the wire). However, we don't do that here for security
 535          * reasons and compatibility with the original behavior.
 536          */
 537         if ((ifp->if_flags & IFF_SIMPLEX) &&
 538             ((*m)->m_flags & M_LOOP)) {
 539             if (lo_ifp) {
 540             if ((*m)->m_flags & M_BCAST) {
 541                 struct mbuf *n = m_copy(*m, 0, (int)M_COPYALL);
 542                 if (n != NULL)
 543                     dlil_output(lo_ifp, ndest->sa_family, n, 0, ndest, 0);
 544             }
 545             else {
 546                 if (bcmp(edst, ifnet_lladdr(ifp), ETHER_ADDR_LEN) == 0) {
 547                     dlil_output(lo_ifp, ndest->sa_family, *m, 0, ndest, 0);
 548                     return EJUSTRETURN;
 549                 }
 550             }
 551             }
 552         }
 553
 554         /*
 555          * Add local net header.  If no space in first mbuf,
 556          * allocate another.
 557          */
 558         M_PREPEND(*m, sizeof (struct ether_header), M_DONTWAIT);
 559         if (*m == 0) {
 560             return (EJUSTRETURN);
 561         }
 562
 563
 564         eh = mtod(*m, struct ether_header *);
 565         (void)memcpy(&eh->ether_type, ether_type,
 566                 sizeof(eh->ether_type));
 567         (void)memcpy(eh->ether_dhost, edst, 6);
 568         ifnet_lladdr_copy_bytes(ifp, eh->ether_shost, ETHER_ADDR_LEN);
 569
 570         return 0;
 571 }
 572
 573
 574 __private_extern__ int
 575 ether_add_if(struct ifnet *ifp)
 576 {
 577         ifp->if_framer = ether_frameout;
 578         ifp->if_demux = ether_demux;
 579
 580     return 0;
 581 }
 582
 583 __private_extern__ int
 584 ether_del_if(struct ifnet *ifp)
 585 {
 586         if (ifp->family_cookie) {
 587                 FREE(ifp->family_cookie, M_IFADDR);
 588                 return 0;
 589         }
 590         else
 591                 return ENOENT;
 592 }
 593
 594 __private_extern__ int
 595 ether_init_if(struct ifnet *ifp)
 596 {
 597         /*
 598          * Copy ethernet address out of old style arpcom. New
 599          * interfaces created using the KPIs will not have an
 600          * interface family. Those interfaces will have the
 601          * lladdr passed in when the interface is created.
 602          */
 603         u_char *enaddr = ((u_char*)ifp) + sizeof(struct ifnet);
 604         ifnet_set_lladdr(ifp, enaddr, 6);
 605         bzero(enaddr, 6);
 606
 607     return 0;
 608 }
 609
 610
 611 errno_t
 612 ether_check_multi(
 613         ifnet_t                                 ifp,
 614         const struct sockaddr   *proto_addr)
 615 {
 616         errno_t result = EAFNOSUPPORT;
 617         const u_char *e_addr;
 618
 619         /*
 620          * AF_SPEC and AF_LINK don't require translation. We do
 621          * want to verify that they specify a valid multicast.
 622          */
 623         switch(proto_addr->sa_family) {
 624                 case AF_UNSPEC:
 625                         e_addr = (const u_char*)&proto_addr->sa_data[0];
 626                         if ((e_addr[0] & 0x01) != 0x01)
 627                                 result = EADDRNOTAVAIL;
 628                         else
 629                                 result = 0;
 630                         break;
 631
 632                 case AF_LINK:
 633                         e_addr = CONST_LLADDR((const struct sockaddr_dl*)proto_addr);
 634                         if ((e_addr[0] & 0x01) != 0x01)
 635                                 result = EADDRNOTAVAIL;
 636                         else
 637                                 result = 0;
 638                         break;
 639         }
 640
 641         return result;
 642 }
 643
 644 int
 645 ether_ioctl(
 646     __unused ifnet_t    ifp,
 647     __unused u_int32_t  command,
 648     __unused void*              data)
 649 {
 650         return EOPNOTSUPP;
 651 }
 652
 653
 654 extern int ether_attach_inet(struct ifnet *ifp, u_long proto_family);
 655 extern int ether_detach_inet(struct ifnet *ifp, u_long proto_family);
 656 extern int ether_attach_inet6(struct ifnet *ifp, u_long proto_family);
 657 extern int ether_detach_inet6(struct ifnet *ifp, u_long proto_family);
 658
 659 extern void kprintf(const char *, ...);
 660
 661 int ether_family_init(void)
 662 {
 663     int  error=0;
 664     struct dlil_ifmod_reg_str  ifmod_reg;
 665
 666     /* ethernet family is built-in, called from bsd_init */
 667
 668     bzero(&ifmod_reg, sizeof(ifmod_reg));
 669     ifmod_reg.add_if = ether_add_if;
 670     ifmod_reg.del_if = ether_del_if;
 671     ifmod_reg.init_if = ether_init_if;
 672     ifmod_reg.add_proto = ether_add_proto_old;
 673     ifmod_reg.del_proto = ether_del_proto;
 674     ifmod_reg.ifmod_ioctl = ether_ioctl;
 675     ifmod_reg.shutdown    = ether_shutdown;
 676
 677     if (dlil_reg_if_modules(APPLE_IF_FAM_ETHERNET, &ifmod_reg)) {
 678         printf("WARNING: ether_family_init -- Can't register if family modules\n");
 679         error = EIO;
 680         goto done;
 681     }
 682
 683         /* Register protocol registration functions */
 684
 685         if ((error = dlil_reg_proto_module(PF_INET, APPLE_IF_FAM_ETHERNET,
 686                                                                           ether_attach_inet, ether_detach_inet)) != 0) {
 687                 kprintf("dlil_reg_proto_module failed for AF_INET6 error=%d\n", error);
 688                 goto done;
 689         }
 690
 691
 692         if ((error = dlil_reg_proto_module(PF_INET6, APPLE_IF_FAM_ETHERNET,
 693                                                                           ether_attach_inet6, ether_detach_inet6)) != 0) {
 694                 kprintf("dlil_reg_proto_module failed for AF_INET6 error=%d\n", error);
 695                 goto done;
 696         }
 697         vlan_family_init();
 698         bond_family_init();
 699
 700  done:
 701
 702     return (error);
 703 }