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