ng_ether.c revision 136428
1 2/* 3 * ng_ether.c 4 * 5 * Copyright (c) 1996-2000 Whistle Communications, Inc. 6 * All rights reserved. 7 * 8 * Subject to the following obligations and disclaimer of warranty, use and 9 * redistribution of this software, in source or object code forms, with or 10 * without modifications are expressly permitted by Whistle Communications; 11 * provided, however, that: 12 * 1. Any and all reproductions of the source or object code must include the 13 * copyright notice above and the following disclaimer of warranties; and 14 * 2. No rights are granted, in any manner or form, to use Whistle 15 * Communications, Inc. trademarks, including the mark "WHISTLE 16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 17 * such appears in the above copyright notice or in the software. 18 * 19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 35 * OF SUCH DAMAGE. 36 * 37 * Authors: Archie Cobbs <archie@freebsd.org> 38 * Julian Elischer <julian@freebsd.org> 39 * 40 * $FreeBSD: head/sys/netgraph/ng_ether.c 136428 2004-10-12 10:33:42Z glebius $ 41 */ 42 43/* 44 * ng_ether(4) netgraph node type 45 */ 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/malloc.h> 51#include <sys/mbuf.h> 52#include <sys/errno.h> 53#include <sys/syslog.h> 54#include <sys/socket.h> 55 56#include <net/bridge.h> 57#include <net/if.h> 58#include <net/if_types.h> 59#include <net/if_arp.h> 60#include <net/if_var.h> 61#include <net/ethernet.h> 62 63#include <netgraph/ng_message.h> 64#include <netgraph/netgraph.h> 65#include <netgraph/ng_parse.h> 66#include <netgraph/ng_ether.h> 67 68#define IFP2NG(ifp) ((struct ng_node *)((struct arpcom *)(ifp))->ac_netgraph) 69#define IFP2NG_SET(ifp, val) (((struct arpcom *)(ifp))->ac_netgraph = (val)) 70 71/* Per-node private data */ 72struct private { 73 struct ifnet *ifp; /* associated interface */ 74 hook_p upper; /* upper hook connection */ 75 hook_p lower; /* lower hook connection */ 76 hook_p orphan; /* orphan hook connection */ 77 u_char autoSrcAddr; /* always overwrite source address */ 78 u_char promisc; /* promiscuous mode enabled */ 79 u_long hwassist; /* hardware checksum capabilities */ 80 u_int flags; /* flags e.g. really die */ 81}; 82typedef struct private *priv_p; 83 84/* Hook pointers used by if_ethersubr.c to callback to netgraph */ 85extern void (*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp); 86extern void (*ng_ether_input_orphan_p)(struct ifnet *ifp, struct mbuf *m); 87extern int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp); 88extern void (*ng_ether_attach_p)(struct ifnet *ifp); 89extern void (*ng_ether_detach_p)(struct ifnet *ifp); 90 91/* Functional hooks called from if_ethersubr.c */ 92static void ng_ether_input(struct ifnet *ifp, struct mbuf **mp); 93static void ng_ether_input_orphan(struct ifnet *ifp, struct mbuf *m); 94static int ng_ether_output(struct ifnet *ifp, struct mbuf **mp); 95static void ng_ether_attach(struct ifnet *ifp); 96static void ng_ether_detach(struct ifnet *ifp); 97 98/* Other functions */ 99static int ng_ether_rcv_lower(node_p node, struct mbuf *m); 100static int ng_ether_rcv_upper(node_p node, struct mbuf *m); 101 102/* Netgraph node methods */ 103static ng_constructor_t ng_ether_constructor; 104static ng_rcvmsg_t ng_ether_rcvmsg; 105static ng_shutdown_t ng_ether_shutdown; 106static ng_newhook_t ng_ether_newhook; 107static ng_connect_t ng_ether_connect; 108static ng_rcvdata_t ng_ether_rcvdata; 109static ng_disconnect_t ng_ether_disconnect; 110static int ng_ether_mod_event(module_t mod, int event, void *data); 111 112/* List of commands and how to convert arguments to/from ASCII */ 113static const struct ng_cmdlist ng_ether_cmdlist[] = { 114 { 115 NGM_ETHER_COOKIE, 116 NGM_ETHER_GET_IFNAME, 117 "getifname", 118 NULL, 119 &ng_parse_string_type 120 }, 121 { 122 NGM_ETHER_COOKIE, 123 NGM_ETHER_GET_IFINDEX, 124 "getifindex", 125 NULL, 126 &ng_parse_int32_type 127 }, 128 { 129 NGM_ETHER_COOKIE, 130 NGM_ETHER_GET_ENADDR, 131 "getenaddr", 132 NULL, 133 &ng_parse_enaddr_type 134 }, 135 { 136 NGM_ETHER_COOKIE, 137 NGM_ETHER_SET_ENADDR, 138 "setenaddr", 139 &ng_parse_enaddr_type, 140 NULL 141 }, 142 { 143 NGM_ETHER_COOKIE, 144 NGM_ETHER_GET_PROMISC, 145 "getpromisc", 146 NULL, 147 &ng_parse_int32_type 148 }, 149 { 150 NGM_ETHER_COOKIE, 151 NGM_ETHER_SET_PROMISC, 152 "setpromisc", 153 &ng_parse_int32_type, 154 NULL 155 }, 156 { 157 NGM_ETHER_COOKIE, 158 NGM_ETHER_GET_AUTOSRC, 159 "getautosrc", 160 NULL, 161 &ng_parse_int32_type 162 }, 163 { 164 NGM_ETHER_COOKIE, 165 NGM_ETHER_SET_AUTOSRC, 166 "setautosrc", 167 &ng_parse_int32_type, 168 NULL 169 }, 170 { 0 } 171}; 172 173static struct ng_type ng_ether_typestruct = { 174 .version = NG_ABI_VERSION, 175 .name = NG_ETHER_NODE_TYPE, 176 .mod_event = ng_ether_mod_event, 177 .constructor = ng_ether_constructor, 178 .rcvmsg = ng_ether_rcvmsg, 179 .shutdown = ng_ether_shutdown, 180 .newhook = ng_ether_newhook, 181 .connect = ng_ether_connect, 182 .rcvdata = ng_ether_rcvdata, 183 .disconnect = ng_ether_disconnect, 184 .cmdlist = ng_ether_cmdlist, 185}; 186MODULE_VERSION(ng_ether, 1); 187NETGRAPH_INIT(ether, &ng_ether_typestruct); 188 189/****************************************************************** 190 ETHERNET FUNCTION HOOKS 191******************************************************************/ 192 193/* 194 * Handle a packet that has come in on an interface. We get to 195 * look at it here before any upper layer protocols do. 196 * 197 * NOTE: this function will get called at splimp() 198 */ 199static void 200ng_ether_input(struct ifnet *ifp, struct mbuf **mp) 201{ 202 const node_p node = IFP2NG(ifp); 203 const priv_p priv = NG_NODE_PRIVATE(node); 204 int error; 205 206 /* If "lower" hook not connected, let packet continue */ 207 if (priv->lower == NULL) 208 return; 209 NG_SEND_DATA_ONLY(error, priv->lower, *mp); /* sets *mp = NULL */ 210} 211 212/* 213 * Handle a packet that has come in on an interface, and which 214 * does not match any of our known protocols (an ``orphan''). 215 * 216 * NOTE: this function will get called at splimp() 217 */ 218static void 219ng_ether_input_orphan(struct ifnet *ifp, struct mbuf *m) 220{ 221 const node_p node = IFP2NG(ifp); 222 const priv_p priv = NG_NODE_PRIVATE(node); 223 int error; 224 225 /* If "orphan" hook not connected, discard packet */ 226 if (priv->orphan == NULL) { 227 m_freem(m); 228 return; 229 } 230 NG_SEND_DATA_ONLY(error, priv->orphan, m); 231} 232 233/* 234 * Handle a packet that is going out on an interface. 235 * The Ethernet header is already attached to the mbuf. 236 */ 237static int 238ng_ether_output(struct ifnet *ifp, struct mbuf **mp) 239{ 240 const node_p node = IFP2NG(ifp); 241 const priv_p priv = NG_NODE_PRIVATE(node); 242 int error = 0; 243 244 /* If "upper" hook not connected, let packet continue */ 245 if (priv->upper == NULL) 246 return (0); 247 248 /* Send it out "upper" hook */ 249 NG_SEND_DATA_ONLY(error, priv->upper, *mp); 250 return (error); 251} 252 253/* 254 * A new Ethernet interface has been attached. 255 * Create a new node for it, etc. 256 */ 257static void 258ng_ether_attach(struct ifnet *ifp) 259{ 260 priv_p priv; 261 node_p node; 262 263 /* Create node */ 264 KASSERT(!IFP2NG(ifp), ("%s: node already exists?", __func__)); 265 if (ng_make_node_common(&ng_ether_typestruct, &node) != 0) { 266 log(LOG_ERR, "%s: can't %s for %s\n", 267 __func__, "create node", ifp->if_xname); 268 return; 269 } 270 271 /* Allocate private data */ 272 MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH, M_NOWAIT | M_ZERO); 273 if (priv == NULL) { 274 log(LOG_ERR, "%s: can't %s for %s\n", 275 __func__, "allocate memory", ifp->if_xname); 276 NG_NODE_UNREF(node); 277 return; 278 } 279 NG_NODE_SET_PRIVATE(node, priv); 280 priv->ifp = ifp; 281 IFP2NG_SET(ifp, node); 282 priv->autoSrcAddr = 1; 283 priv->hwassist = ifp->if_hwassist; 284 285 /* Try to give the node the same name as the interface */ 286 if (ng_name_node(node, ifp->if_xname) != 0) { 287 log(LOG_WARNING, "%s: can't name node %s\n", 288 __func__, ifp->if_xname); 289 } 290} 291 292/* 293 * An Ethernet interface is being detached. 294 * REALLY Destroy its node. 295 */ 296static void 297ng_ether_detach(struct ifnet *ifp) 298{ 299 const node_p node = IFP2NG(ifp); 300 const priv_p priv = NG_NODE_PRIVATE(node); 301 302 if (node == NULL) /* no node (why not?), ignore */ 303 return; 304 NG_NODE_REALLY_DIE(node); /* Force real removal of node */ 305 /* 306 * We can't assume the ifnet is still around when we run shutdown 307 * So zap it now. XXX We HOPE that anything running at this time 308 * handles it (as it should in the non netgraph case). 309 */ 310 IFP2NG_SET(ifp, NULL); 311 priv->ifp = NULL; /* XXX race if interrupted an output packet */ 312 ng_rmnode_self(node); /* remove all netgraph parts */ 313} 314 315/****************************************************************** 316 NETGRAPH NODE METHODS 317******************************************************************/ 318 319/* 320 * It is not possible or allowable to create a node of this type. 321 * Nodes get created when the interface is attached (or, when 322 * this node type's KLD is loaded). 323 */ 324static int 325ng_ether_constructor(node_p node) 326{ 327 return (EINVAL); 328} 329 330/* 331 * Check for attaching a new hook. 332 */ 333static int 334ng_ether_newhook(node_p node, hook_p hook, const char *name) 335{ 336 const priv_p priv = NG_NODE_PRIVATE(node); 337 hook_p *hookptr; 338 339 /* Divert hook is an alias for lower */ 340 if (strcmp(name, NG_ETHER_HOOK_DIVERT) == 0) 341 name = NG_ETHER_HOOK_LOWER; 342 343 /* Which hook? */ 344 if (strcmp(name, NG_ETHER_HOOK_UPPER) == 0) 345 hookptr = &priv->upper; 346 else if (strcmp(name, NG_ETHER_HOOK_LOWER) == 0) 347 hookptr = &priv->lower; 348 else if (strcmp(name, NG_ETHER_HOOK_ORPHAN) == 0) 349 hookptr = &priv->orphan; 350 else 351 return (EINVAL); 352 353 /* Check if already connected (shouldn't be, but doesn't hurt) */ 354 if (*hookptr != NULL) 355 return (EISCONN); 356 357 /* Disable hardware checksums while 'upper' hook is connected */ 358 if (hookptr == &priv->upper) 359 priv->ifp->if_hwassist = 0; 360 361 /* OK */ 362 *hookptr = hook; 363 return (0); 364} 365 366/* 367 * Hooks are attached, adjust to force queueing. 368 * We don't really care which hook it is. 369 * they should all be queuing for outgoing data. 370 */ 371static int 372ng_ether_connect(hook_p hook) 373{ 374 NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook)); 375 return (0); 376} 377 378/* 379 * Receive an incoming control message. 380 */ 381static int 382ng_ether_rcvmsg(node_p node, item_p item, hook_p lasthook) 383{ 384 const priv_p priv = NG_NODE_PRIVATE(node); 385 struct ng_mesg *resp = NULL; 386 int error = 0; 387 struct ng_mesg *msg; 388 389 NGI_GET_MSG(item, msg); 390 switch (msg->header.typecookie) { 391 case NGM_ETHER_COOKIE: 392 switch (msg->header.cmd) { 393 case NGM_ETHER_GET_IFNAME: 394 NG_MKRESPONSE(resp, msg, IFNAMSIZ + 1, M_NOWAIT); 395 if (resp == NULL) { 396 error = ENOMEM; 397 break; 398 } 399 strlcpy(resp->data, priv->ifp->if_xname, IFNAMSIZ + 1); 400 break; 401 case NGM_ETHER_GET_IFINDEX: 402 NG_MKRESPONSE(resp, msg, sizeof(u_int32_t), M_NOWAIT); 403 if (resp == NULL) { 404 error = ENOMEM; 405 break; 406 } 407 *((u_int32_t *)resp->data) = priv->ifp->if_index; 408 break; 409 case NGM_ETHER_GET_ENADDR: 410 NG_MKRESPONSE(resp, msg, ETHER_ADDR_LEN, M_NOWAIT); 411 if (resp == NULL) { 412 error = ENOMEM; 413 break; 414 } 415 bcopy((IFP2AC(priv->ifp))->ac_enaddr, 416 resp->data, ETHER_ADDR_LEN); 417 break; 418 case NGM_ETHER_SET_ENADDR: 419 { 420 if (msg->header.arglen != ETHER_ADDR_LEN) { 421 error = EINVAL; 422 break; 423 } 424 error = if_setlladdr(priv->ifp, 425 (u_char *)msg->data, ETHER_ADDR_LEN); 426 break; 427 } 428 case NGM_ETHER_GET_PROMISC: 429 NG_MKRESPONSE(resp, msg, sizeof(u_int32_t), M_NOWAIT); 430 if (resp == NULL) { 431 error = ENOMEM; 432 break; 433 } 434 *((u_int32_t *)resp->data) = priv->promisc; 435 break; 436 case NGM_ETHER_SET_PROMISC: 437 { 438 u_char want; 439 440 if (msg->header.arglen != sizeof(u_int32_t)) { 441 error = EINVAL; 442 break; 443 } 444 want = !!*((u_int32_t *)msg->data); 445 if (want ^ priv->promisc) { 446 if ((error = ifpromisc(priv->ifp, want)) != 0) 447 break; 448 priv->promisc = want; 449 } 450 break; 451 } 452 case NGM_ETHER_GET_AUTOSRC: 453 NG_MKRESPONSE(resp, msg, sizeof(u_int32_t), M_NOWAIT); 454 if (resp == NULL) { 455 error = ENOMEM; 456 break; 457 } 458 *((u_int32_t *)resp->data) = priv->autoSrcAddr; 459 break; 460 case NGM_ETHER_SET_AUTOSRC: 461 if (msg->header.arglen != sizeof(u_int32_t)) { 462 error = EINVAL; 463 break; 464 } 465 priv->autoSrcAddr = !!*((u_int32_t *)msg->data); 466 break; 467 default: 468 error = EINVAL; 469 break; 470 } 471 break; 472 default: 473 error = EINVAL; 474 break; 475 } 476 NG_RESPOND_MSG(error, node, item, resp); 477 NG_FREE_MSG(msg); 478 return (error); 479} 480 481/* 482 * Receive data on a hook. 483 */ 484static int 485ng_ether_rcvdata(hook_p hook, item_p item) 486{ 487 const node_p node = NG_HOOK_NODE(hook); 488 const priv_p priv = NG_NODE_PRIVATE(node); 489 struct mbuf *m; 490 491 NGI_GET_M(item, m); 492 NG_FREE_ITEM(item); 493 494 if (hook == priv->lower || hook == priv->orphan) 495 return ng_ether_rcv_lower(node, m); 496 if (hook == priv->upper) 497 return ng_ether_rcv_upper(node, m); 498 panic("%s: weird hook", __func__); 499#ifdef RESTARTABLE_PANICS /* so we don't get an error msg in LINT */ 500 return (0); 501#endif 502} 503 504/* 505 * Handle an mbuf received on the "lower" or "orphan" hook. 506 */ 507static int 508ng_ether_rcv_lower(node_p node, struct mbuf *m) 509{ 510 const priv_p priv = NG_NODE_PRIVATE(node); 511 struct ifnet *const ifp = priv->ifp; 512 513 /* Check whether interface is ready for packets */ 514 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { 515 NG_FREE_M(m); 516 return (ENETDOWN); 517 } 518 519 /* Make sure header is fully pulled up */ 520 if (m->m_pkthdr.len < sizeof(struct ether_header)) { 521 NG_FREE_M(m); 522 return (EINVAL); 523 } 524 if (m->m_len < sizeof(struct ether_header) 525 && (m = m_pullup(m, sizeof(struct ether_header))) == NULL) 526 return (ENOBUFS); 527 528 /* Drop in the MAC address if desired */ 529 if (priv->autoSrcAddr) { 530 531 /* Make the mbuf writable if it's not already */ 532 if (!M_WRITABLE(m) 533 && (m = m_pullup(m, sizeof(struct ether_header))) == NULL) 534 return (ENOBUFS); 535 536 /* Overwrite source MAC address */ 537 bcopy((IFP2AC(ifp))->ac_enaddr, 538 mtod(m, struct ether_header *)->ether_shost, 539 ETHER_ADDR_LEN); 540 } 541 542 /* Send it on its way */ 543 return ether_output_frame(ifp, m); 544} 545 546/* 547 * Handle an mbuf received on the "upper" hook. 548 */ 549static int 550ng_ether_rcv_upper(node_p node, struct mbuf *m) 551{ 552 const priv_p priv = NG_NODE_PRIVATE(node); 553 554 m->m_pkthdr.rcvif = priv->ifp; 555 556 if (BDG_ACTIVE(priv->ifp) ) 557 if ((m = bridge_in_ptr(priv->ifp, m)) == NULL) 558 return (0); 559 560 /* Route packet back in */ 561 ether_demux(priv->ifp, m); 562 return (0); 563} 564 565/* 566 * Shutdown node. This resets the node but does not remove it 567 * unless the REALLY_DIE flag is set. 568 */ 569static int 570ng_ether_shutdown(node_p node) 571{ 572 const priv_p priv = NG_NODE_PRIVATE(node); 573 574 if (node->nd_flags & NGF_REALLY_DIE) { 575 /* 576 * WE came here because the ethernet card is being unloaded, 577 * so stop being persistant. 578 * Actually undo all the things we did on creation. 579 * Assume the ifp has already been freed. 580 */ 581 NG_NODE_SET_PRIVATE(node, NULL); 582 FREE(priv, M_NETGRAPH); 583 NG_NODE_UNREF(node); /* free node itself */ 584 return (0); 585 } 586 if (priv->promisc) { /* disable promiscuous mode */ 587 (void)ifpromisc(priv->ifp, 0); 588 priv->promisc = 0; 589 } 590 priv->autoSrcAddr = 1; /* reset auto-src-addr flag */ 591 NG_NODE_REVIVE(node); /* Signal ng_rmnode we are persisant */ 592 593 return (0); 594} 595 596/* 597 * Hook disconnection. 598 */ 599static int 600ng_ether_disconnect(hook_p hook) 601{ 602 const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 603 604 if (hook == priv->upper) { 605 priv->upper = NULL; 606 if (priv->ifp != NULL) /* restore h/w csum */ 607 priv->ifp->if_hwassist = priv->hwassist; 608 } else if (hook == priv->lower) 609 priv->lower = NULL; 610 else if (hook == priv->orphan) 611 priv->orphan = NULL; 612 else 613 panic("%s: weird hook", __func__); 614 if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0) 615 && (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) 616 ng_rmnode_self(NG_HOOK_NODE(hook)); /* reset node */ 617 return (0); 618} 619 620/****************************************************************** 621 INITIALIZATION 622******************************************************************/ 623 624/* 625 * Handle loading and unloading for this node type. 626 */ 627static int 628ng_ether_mod_event(module_t mod, int event, void *data) 629{ 630 struct ifnet *ifp; 631 int error = 0; 632 int s; 633 634 s = splnet(); 635 switch (event) { 636 case MOD_LOAD: 637 638 /* Register function hooks */ 639 if (ng_ether_attach_p != NULL) { 640 error = EEXIST; 641 break; 642 } 643 ng_ether_attach_p = ng_ether_attach; 644 ng_ether_detach_p = ng_ether_detach; 645 ng_ether_output_p = ng_ether_output; 646 ng_ether_input_p = ng_ether_input; 647 ng_ether_input_orphan_p = ng_ether_input_orphan; 648 649 /* Create nodes for any already-existing Ethernet interfaces */ 650 IFNET_RLOCK(); 651 TAILQ_FOREACH(ifp, &ifnet, if_link) { 652 if (ifp->if_type == IFT_ETHER 653 || ifp->if_type == IFT_L2VLAN) 654 ng_ether_attach(ifp); 655 } 656 IFNET_RUNLOCK(); 657 break; 658 659 case MOD_UNLOAD: 660 661 /* 662 * Note that the base code won't try to unload us until 663 * all nodes have been removed, and that can't happen 664 * until all Ethernet interfaces are removed. In any 665 * case, we know there are no nodes left if the action 666 * is MOD_UNLOAD, so there's no need to detach any nodes. 667 */ 668 669 /* Unregister function hooks */ 670 ng_ether_attach_p = NULL; 671 ng_ether_detach_p = NULL; 672 ng_ether_output_p = NULL; 673 ng_ether_input_p = NULL; 674 ng_ether_input_orphan_p = NULL; 675 break; 676 677 default: 678 error = EOPNOTSUPP; 679 break; 680 } 681 splx(s); 682 return (error); 683} 684 685