1 /* 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * From: @(#)if.h 8.1 (Berkeley) 6/10/93 34 * $FreeBSD: src/sys/net/if_var.h,v 1.18.2.16 2003/04/15 18:11:19 fjoe Exp $ 35 * $DragonFly: src/sys/net/if_var.h,v 1.71 2008/11/22 04:00:53 sephe Exp $ 36 */ 37 38 #ifndef _NET_IF_VAR_H_ 39 #define _NET_IF_VAR_H_ 40 41 #ifndef _SYS_SERIALIZE_H_ 42 #include <sys/serialize.h> 43 #endif 44 #ifndef _NET_IF_H_ 45 #include <net/if.h> 46 #endif 47 48 /* 49 * Structures defining a network interface, providing a packet 50 * transport mechanism (ala level 0 of the PUP protocols). 51 * 52 * Each interface accepts output datagrams of a specified maximum 53 * length, and provides higher level routines with input datagrams 54 * received from its medium. 55 * 56 * Output occurs when the routine if_output is called, with four parameters: 57 * ifp->if_output(ifp, m, dst, rt) 58 * Here m is the mbuf chain to be sent and dst is the destination address. 59 * The output routine encapsulates the supplied datagram if necessary, 60 * and then transmits it on its medium. 61 * 62 * On input, each interface unwraps the data received by it, and either 63 * places it on the input queue of a internetwork datagram routine 64 * and posts the associated software interrupt, or passes the datagram to 65 * the routine if_input. It is called with the mbuf chain as parameter: 66 * ifp->if_input(ifp, m) 67 * The input routine removes the protocol dependent header if necessary. 68 * 69 * Routines exist for locating interfaces by their addresses 70 * or for locating a interface on a certain network, as well as more general 71 * routing and gateway routines maintaining information used to locate 72 * interfaces. These routines live in the files if.c and route.c 73 */ 74 75 /* 76 * Forward structure declarations for function prototypes [sic]. 77 */ 78 struct mbuf; 79 struct mbuf_chain; 80 struct proc; 81 struct rtentry; 82 struct rt_addrinfo; 83 struct socket; 84 struct ether_header; 85 struct ucred; 86 struct lwkt_serialize; 87 struct ifaddr_container; 88 struct ifaddr; 89 struct lwkt_port; 90 struct lwkt_msg; 91 struct netmsg; 92 struct pktinfo; 93 94 #include <sys/queue.h> /* get TAILQ macros */ 95 96 #include <net/altq/if_altq.h> 97 98 #ifdef _KERNEL 99 #include <sys/eventhandler.h> 100 #include <sys/mbuf.h> 101 #include <sys/systm.h> /* XXX */ 102 #include <sys/thread2.h> 103 #endif /* _KERNEL */ 104 105 #define IF_DUNIT_NONE -1 106 107 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 108 TAILQ_HEAD(ifaddrhead, ifaddr_container); /* instantiation is preserved in the list */ 109 TAILQ_HEAD(ifprefixhead, ifprefix); 110 LIST_HEAD(ifmultihead, ifmultiaddr); 111 112 /* 113 * Structure defining a queue for a network interface. 114 */ 115 struct ifqueue { 116 struct mbuf *ifq_head; 117 struct mbuf *ifq_tail; 118 int ifq_len; 119 int ifq_maxlen; 120 int ifq_drops; 121 }; 122 123 /* 124 * Note of DEVICE_POLLING 125 * 1) Any file(*.c) that depends on DEVICE_POLLING supports in this 126 * file should include opt_polling.h at its beginning. 127 * 2) When struct changes, which are conditioned by DEVICE_POLLING, 128 * are to be introduced, please keep the struct's size and layout 129 * same, no matter whether DEVICE_POLLING is defined or not. 130 * See ifnet.if_poll and ifnet.if_poll_unused for example. 131 */ 132 133 #ifdef DEVICE_POLLING 134 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER, 135 POLL_REGISTER }; 136 #endif 137 138 /* 139 * Structure defining a network interface. 140 * 141 * (Would like to call this struct ``if'', but C isn't PL/1.) 142 */ 143 144 /* 145 * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with 146 * one of these structures, typically held within an arpcom structure. 147 * 148 * struct <foo>_softc { 149 * struct arpcom { 150 * struct ifnet ac_if; 151 * ... 152 * } <arpcom> ; 153 * ... 154 * }; 155 * 156 * The assumption is used in a number of places, including many 157 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach(). 158 * 159 * Unfortunately devices' softc are opaque, so we depend on this layout 160 * to locate the struct ifnet from the softc in the generic code. 161 * 162 * MPSAFE NOTES: 163 * 164 * ifnet is protected by if_serializer. ifnet.if_snd is protected by its 165 * own spinlock. Callers of if_ioctl, if_start, if_watchdog, if_init, 166 * if_resolvemulti, and if_poll hold if_serializer. Device drivers usually 167 * use the same serializer for their interrupt but this is not required. 168 * Caller of if_output must not hold if_serializer; if_output should hold 169 * if_serializer based on its own needs. However, the device driver must 170 * be holding if_serializer when it calls if_input. Note that the serializer 171 * may be temporarily released within if_input to avoid a deadlock (e.g. when 172 * fast-forwarding or bridging packets between interfaces). 173 * 174 * If a device driver installs the same serializer for its interrupt 175 * as for ifnet, then the driver only really needs to worry about further 176 * serialization in timeout based entry points. All other entry points 177 * will already be serialized. Older ISA drivers still using the old 178 * interrupt infrastructure will have to obtain and release the serializer 179 * in their interrupt routine themselves. 180 */ 181 struct ifnet { 182 void *if_softc; /* pointer to driver state */ 183 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 184 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 185 const char *if_dname; /* driver name */ 186 int if_dunit; /* unit or IF_DUNIT_NONE */ 187 void *if_vlantrunks; /* vlan trunks */ 188 struct ifaddrhead *if_addrheads; /* array[NCPU] of TAILQs of addresses per if */ 189 int if_pcount; /* number of promiscuous listeners */ 190 void *if_carp; /* carp interfaces */ 191 struct bpf_if *if_bpf; /* packet filter structure */ 192 u_short if_index; /* numeric abbreviation for this if */ 193 short if_timer; /* time 'til if_watchdog called */ 194 int if_flags; /* up/down, broadcast, etc. */ 195 int if_capabilities; /* interface capabilities */ 196 int if_capenable; /* enabled features */ 197 void *if_linkmib; /* link-type-specific MIB data */ 198 size_t if_linkmiblen; /* length of above data */ 199 struct if_data if_data; 200 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 201 int if_amcount; /* number of all-multicast requests */ 202 /* procedure handles */ 203 int (*if_output) /* output routine (enqueue) */ 204 (struct ifnet *, struct mbuf *, struct sockaddr *, 205 struct rtentry *); 206 void (*if_input) /* input routine from hardware driver */ 207 (struct ifnet *, struct mbuf *); 208 void (*if_start) /* initiate output routine */ 209 (struct ifnet *); 210 int (*if_ioctl) /* ioctl routine */ 211 (struct ifnet *, u_long, caddr_t, struct ucred *); 212 void (*if_watchdog) /* timer routine */ 213 (struct ifnet *); 214 void (*if_init) /* Init routine */ 215 (void *); 216 int (*if_resolvemulti) /* validate/resolve multicast */ 217 (struct ifnet *, struct sockaddr **, struct sockaddr *); 218 int (*if_start_cpuid) /* cpuid to run if_start */ 219 (struct ifnet *); 220 #ifdef DEVICE_POLLING 221 void (*if_poll) /* IFF_POLLING support */ 222 (struct ifnet *, enum poll_cmd, int); 223 int if_poll_cpuid; 224 #else 225 /* Place holders */ 226 void (*if_poll_unused)(void); 227 int if_poll_cpuid_used; 228 #endif 229 struct ifaltq if_snd; /* output queue (includes altq) */ 230 struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 231 const uint8_t *if_broadcastaddr; 232 void *if_bridge; /* bridge glue */ 233 void *if_afdata[AF_MAX]; 234 struct ifaddr *if_lladdr; 235 struct lwkt_serialize *if_serializer; /* serializer or MP lock */ 236 struct lwkt_serialize if_default_serializer; /* if not supplied */ 237 int if_cpuid; 238 struct netmsg *if_start_nmsg; /* percpu messages to schedule if_start */ 239 }; 240 typedef void if_init_f_t (void *); 241 242 #define if_mtu if_data.ifi_mtu 243 #define if_type if_data.ifi_type 244 #define if_physical if_data.ifi_physical 245 #define if_addrlen if_data.ifi_addrlen 246 #define if_hdrlen if_data.ifi_hdrlen 247 #define if_metric if_data.ifi_metric 248 #define if_link_state if_data.ifi_link_state 249 #define if_baudrate if_data.ifi_baudrate 250 #define if_hwassist if_data.ifi_hwassist 251 #define if_ipackets if_data.ifi_ipackets 252 #define if_ierrors if_data.ifi_ierrors 253 #define if_opackets if_data.ifi_opackets 254 #define if_oerrors if_data.ifi_oerrors 255 #define if_collisions if_data.ifi_collisions 256 #define if_ibytes if_data.ifi_ibytes 257 #define if_obytes if_data.ifi_obytes 258 #define if_imcasts if_data.ifi_imcasts 259 #define if_omcasts if_data.ifi_omcasts 260 #define if_iqdrops if_data.ifi_iqdrops 261 #define if_noproto if_data.ifi_noproto 262 #define if_lastchange if_data.ifi_lastchange 263 #define if_recvquota if_data.ifi_recvquota 264 #define if_xmitquota if_data.ifi_xmitquota 265 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL) 266 267 /* for compatibility with other BSDs */ 268 #define if_list if_link 269 270 271 /* 272 * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 273 * are queues of messages stored on ifqueue structures 274 * (defined above). Entries are added to and deleted from these structures 275 * by these macros, which should be called with ipl raised to splimp(). 276 */ 277 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 278 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 279 #define IF_QLEN(ifq) ((ifq)->ifq_len) 280 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0) 281 #define IF_ENQUEUE(ifq, m) do { \ 282 (m)->m_nextpkt = 0; \ 283 if ((ifq)->ifq_tail == 0) \ 284 (ifq)->ifq_head = m; \ 285 else \ 286 (ifq)->ifq_tail->m_nextpkt = m; \ 287 (ifq)->ifq_tail = m; \ 288 (ifq)->ifq_len++; \ 289 } while (0) 290 #define IF_PREPEND(ifq, m) do { \ 291 (m)->m_nextpkt = (ifq)->ifq_head; \ 292 if ((ifq)->ifq_tail == 0) \ 293 (ifq)->ifq_tail = (m); \ 294 (ifq)->ifq_head = (m); \ 295 (ifq)->ifq_len++; \ 296 } while (0) 297 #define IF_DEQUEUE(ifq, m) do { \ 298 (m) = (ifq)->ifq_head; \ 299 if (m) { \ 300 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 301 (ifq)->ifq_tail = 0; \ 302 (m)->m_nextpkt = 0; \ 303 (ifq)->ifq_len--; \ 304 } \ 305 } while (0) 306 307 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 308 309 #define IF_DRAIN(ifq) do { \ 310 struct mbuf *m; \ 311 while (1) { \ 312 IF_DEQUEUE(ifq, m); \ 313 if (m == NULL) \ 314 break; \ 315 m_freem(m); \ 316 } \ 317 } while (0) 318 319 #ifdef _KERNEL 320 321 /* 322 * DEPRECATED - should not be used by any new driver. This code uses the 323 * old queueing interface and if_start ABI and does not use the ifp's 324 * serializer. 325 */ 326 #define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0) 327 #define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj) 328 329 static __inline int 330 if_handoff(struct ifqueue *_ifq, struct mbuf *_m, struct ifnet *_ifp, 331 int _adjust) 332 { 333 int _need_if_start = 0; 334 335 crit_enter(); 336 337 if (IF_QFULL(_ifq)) { 338 IF_DROP(_ifq); 339 crit_exit(); 340 m_freem(_m); 341 return (0); 342 } 343 if (_ifp != NULL) { 344 _ifp->if_obytes += _m->m_pkthdr.len + _adjust; 345 if (_m->m_flags & M_MCAST) 346 _ifp->if_omcasts++; 347 _need_if_start = !(_ifp->if_flags & IFF_OACTIVE); 348 } 349 IF_ENQUEUE(_ifq, _m); 350 if (_need_if_start) { 351 (*_ifp->if_start)(_ifp); 352 } 353 crit_exit(); 354 return (1); 355 } 356 357 /* 358 * 72 was chosen below because it is the size of a TCP/IP 359 * header (40) + the minimum mss (32). 360 */ 361 #define IF_MINMTU 72 362 #define IF_MAXMTU 65535 363 364 #endif /* _KERNEL */ 365 366 struct in_ifaddr; 367 368 struct in_ifaddr_container { 369 struct in_ifaddr *ia; 370 LIST_ENTRY(in_ifaddr_container) ia_hash; 371 /* entry in bucket of inet addresses */ 372 TAILQ_ENTRY(in_ifaddr_container) ia_link; 373 /* list of internet addresses */ 374 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */ 375 }; 376 377 struct ifaddr_container { 378 #define IFA_CONTAINER_MAGIC 0x19810219 379 #define IFA_CONTAINER_DEAD 0xc0dedead 380 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */ 381 struct ifaddr *ifa; 382 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */ 383 u_int ifa_refcnt; /* references to this structure */ 384 uint16_t ifa_listmask; /* IFA_LIST_ */ 385 uint16_t ifa_prflags; /* protocol specific flags */ 386 387 /* 388 * Protocol specific states 389 */ 390 union { 391 struct in_ifaddr_container u_in_ifac; 392 } ifa_proto_u; 393 }; 394 395 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */ 396 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */ 397 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */ 398 399 #define IFA_PRF_FLAG0 0x01 400 #define IFA_PRF_FLAG1 0x02 401 #define IFA_PRF_FLAG2 0x04 402 #define IFA_PRF_FLAG3 0x08 403 404 /* 405 * The ifaddr structure contains information about one address 406 * of an interface. They are maintained by the different address families, 407 * are allocated and attached when an address is set, and are linked 408 * together so all addresses for an interface can be located. 409 */ 410 struct ifaddr { 411 struct sockaddr *ifa_addr; /* address of interface */ 412 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 413 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 414 struct sockaddr *ifa_netmask; /* used to determine subnet */ 415 struct if_data if_data; /* not all members are meaningful */ 416 struct ifnet *ifa_ifp; /* back-pointer to interface */ 417 void *ifa_link_pad; 418 struct ifaddr_container *ifa_containers; 419 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 420 (int, struct rtentry *, struct rt_addrinfo *); 421 u_short ifa_flags; /* mostly rt_flags for cloning */ 422 int ifa_ncnt; /* # of valid ifaddr_container */ 423 int ifa_metric; /* cost of going out this interface */ 424 #ifdef notdef 425 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 426 #endif 427 int (*ifa_claim_addr) /* check if an addr goes to this if */ 428 (struct ifaddr *, struct sockaddr *); 429 430 }; 431 #define IFA_ROUTE RTF_UP /* route installed */ 432 433 /* for compatibility with other BSDs */ 434 #define ifa_list ifa_link 435 436 /* 437 * The prefix structure contains information about one prefix 438 * of an interface. They are maintained by the different address families, 439 * are allocated and attached when an prefix or an address is set, 440 * and are linked together so all prefixes for an interface can be located. 441 */ 442 struct ifprefix { 443 struct sockaddr *ifpr_prefix; /* prefix of interface */ 444 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 445 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 446 u_char ifpr_plen; /* prefix length in bits */ 447 u_char ifpr_type; /* protocol dependent prefix type */ 448 }; 449 450 /* 451 * Multicast address structure. This is analogous to the ifaddr 452 * structure except that it keeps track of multicast addresses. 453 * Also, the reference count here is a count of requests for this 454 * address, not a count of pointers to this structure. 455 */ 456 struct ifmultiaddr { 457 LIST_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 458 struct sockaddr *ifma_addr; /* address this membership is for */ 459 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 460 struct ifnet *ifma_ifp; /* back-pointer to interface */ 461 u_int ifma_refcount; /* reference count */ 462 void *ifma_protospec; /* protocol-specific state, if any */ 463 }; 464 465 #ifdef _KERNEL 466 467 enum ifaddr_event { 468 IFADDR_EVENT_ADD, 469 IFADDR_EVENT_DELETE, 470 IFADDR_EVENT_CHANGE 471 }; 472 473 /* interface address change event */ 474 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *, 475 enum ifaddr_event, struct ifaddr *); 476 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 477 /* new interface attach event */ 478 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *); 479 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t); 480 /* interface detach event */ 481 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *); 482 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t); 483 484 #ifdef INVARIANTS 485 #define ASSERT_IFAC_VALID(ifac) do { \ 486 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \ 487 KKASSERT((ifac)->ifa_refcnt > 0); \ 488 } while (0) 489 #else 490 #define ASSERT_IFAC_VALID(ifac) ((void)0) 491 #endif 492 493 static __inline void 494 _IFAREF(struct ifaddr *_ifa, int _cpu_id) 495 { 496 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id]; 497 498 crit_enter(); 499 ASSERT_IFAC_VALID(_ifac); 500 ++_ifac->ifa_refcnt; 501 crit_exit(); 502 } 503 504 static __inline void 505 IFAREF(struct ifaddr *_ifa) 506 { 507 _IFAREF(_ifa, mycpuid); 508 } 509 510 #include <sys/malloc.h> 511 512 MALLOC_DECLARE(M_IFADDR); 513 MALLOC_DECLARE(M_IFMADDR); 514 515 void ifac_free(struct ifaddr_container *, int); 516 517 static __inline void 518 _IFAFREE(struct ifaddr *_ifa, int _cpu_id) 519 { 520 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id]; 521 522 crit_enter(); 523 ASSERT_IFAC_VALID(_ifac); 524 if (--_ifac->ifa_refcnt == 0) 525 ifac_free(_ifac, _cpu_id); 526 crit_exit(); 527 } 528 529 static __inline void 530 IFAFREE(struct ifaddr *_ifa) 531 { 532 _IFAFREE(_ifa, mycpuid); 533 } 534 535 struct lwkt_port *ifnet_portfn(int); 536 int ifnet_domsg(struct lwkt_msg *, int); 537 void ifnet_sendmsg(struct lwkt_msg *, int); 538 void ifnet_forwardmsg(struct lwkt_msg *, int); 539 540 static __inline int 541 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu) 542 { 543 return ifnet_domsg(_lmsg, _cpu); 544 } 545 546 static __inline void 547 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu) 548 { 549 ifnet_sendmsg(_lmsg, _cpu); 550 } 551 552 static __inline void 553 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu) 554 { 555 ifnet_forwardmsg(_lmsg, _nextcpu); 556 } 557 558 extern struct ifnethead ifnet; 559 extern struct ifnet **ifindex2ifnet; 560 extern int ifqmaxlen; 561 extern struct ifnet loif[]; 562 extern int if_index; 563 564 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *); 565 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int, 566 struct lwkt_serialize *); 567 void ether_ifdetach(struct ifnet *); 568 void ether_demux_oncpu(struct ifnet *, struct mbuf *); 569 void ether_input_oncpu(struct ifnet *, struct mbuf *); 570 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int); 571 void ether_input_chain(struct ifnet *, struct mbuf *, 572 const struct pktinfo *, struct mbuf_chain *); 573 void ether_input_chain_init(struct mbuf_chain *); 574 void ether_input_dispatch(struct mbuf_chain *); 575 int ether_output_frame(struct ifnet *, struct mbuf *); 576 int ether_ioctl(struct ifnet *, int, caddr_t); 577 uint32_t ether_crc32_le(const uint8_t *, size_t); 578 uint32_t ether_crc32_be(const uint8_t *, size_t); 579 580 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 581 int if_allmulti(struct ifnet *, int); 582 void if_attach(struct ifnet *, struct lwkt_serialize *); 583 int if_delmulti(struct ifnet *, struct sockaddr *); 584 void if_purgeaddrs_nolink(struct ifnet *); 585 void if_detach(struct ifnet *); 586 void if_down(struct ifnet *); 587 void if_link_state_change(struct ifnet *); 588 void if_initname(struct ifnet *, const char *, int); 589 int if_getanyethermac(uint16_t *, int); 590 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 591 void if_route(struct ifnet *, int flag, int fam); 592 int if_setlladdr(struct ifnet *, const u_char *, int); 593 void if_unroute(struct ifnet *, int flag, int fam); 594 void if_up(struct ifnet *); 595 /*void ifinit(void);*/ /* declared in systm.h for main() */ 596 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *); 597 int ifpromisc(struct ifnet *, int); 598 struct ifnet *ifunit(const char *); 599 struct ifnet *if_withname(struct sockaddr *); 600 601 struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 602 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 603 struct ifaddr *ifa_ifwithnet(struct sockaddr *); 604 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 605 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 606 607 void *ifa_create(int, int); 608 void ifa_destroy(struct ifaddr *); 609 void ifa_iflink(struct ifaddr *, struct ifnet *, int); 610 void ifa_ifunlink(struct ifaddr *, struct ifnet *); 611 612 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *); 613 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 614 void if_devstart(struct ifnet *ifp); 615 616 #define IF_LLSOCKADDR(ifp) \ 617 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr) 618 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp)) 619 620 #ifdef DEVICE_POLLING 621 typedef void poll_handler_t (struct ifnet *ifp, enum poll_cmd cmd, int count); 622 int ether_poll_register(struct ifnet *); 623 int ether_poll_deregister(struct ifnet *); 624 int ether_pollcpu_register(struct ifnet *, int); 625 #endif /* DEVICE_POLLING */ 626 #endif /* _KERNEL */ 627 628 #endif /* !_NET_IF_VAR_H_ */ 629