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 */ 36 37 #ifndef _NET_IF_VAR_H_ 38 #define _NET_IF_VAR_H_ 39 40 #ifndef _SYS_SERIALIZE_H_ 41 #include <sys/serialize.h> 42 #endif 43 #ifndef _NET_IF_H_ 44 #include <net/if.h> 45 #endif 46 #ifndef _SYS_MUTEX_H_ 47 #include <sys/mutex.h> 48 #endif 49 50 /* 51 * Structures defining a network interface, providing a packet 52 * transport mechanism (ala level 0 of the PUP protocols). 53 * 54 * Each interface accepts output datagrams of a specified maximum 55 * length, and provides higher level routines with input datagrams 56 * received from its medium. 57 * 58 * Output occurs when the routine if_output is called, with four parameters: 59 * ifp->if_output(ifp, m, dst, rt) 60 * Here m is the mbuf chain to be sent and dst is the destination address. 61 * The output routine encapsulates the supplied datagram if necessary, 62 * and then transmits it on its medium. 63 * 64 * On input, each interface unwraps the data received by it, and either 65 * places it on the input queue of a internetwork datagram routine 66 * and posts the associated software interrupt, or passes the datagram to 67 * the routine if_input. It is called with the mbuf chain as parameter: 68 * ifp->if_input(ifp, m) 69 * The input routine removes the protocol dependent header if necessary. 70 * 71 * Routines exist for locating interfaces by their addresses 72 * or for locating a interface on a certain network, as well as more general 73 * routing and gateway routines maintaining information used to locate 74 * interfaces. These routines live in the files if.c and route.c 75 */ 76 77 /* 78 * Forward structure declarations for function prototypes [sic]. 79 */ 80 struct mbuf; 81 struct proc; 82 struct rtentry; 83 struct rt_addrinfo; 84 struct socket; 85 struct ether_header; 86 struct ucred; 87 struct lwkt_serialize; 88 struct ifaddr_container; 89 struct ifaddr; 90 struct lwkt_port; 91 struct lwkt_msg; 92 union netmsg; 93 struct pktinfo; 94 struct ifpoll_info; 95 96 #include <sys/queue.h> /* get TAILQ macros */ 97 98 #include <net/altq/if_altq.h> 99 100 #ifdef _KERNEL 101 #include <sys/eventhandler.h> 102 #include <sys/mbuf.h> 103 #include <sys/systm.h> /* XXX */ 104 #include <sys/thread2.h> 105 #endif /* _KERNEL */ 106 107 #define IF_DUNIT_NONE -1 108 109 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 110 TAILQ_HEAD(ifaddrhead, ifaddr_container); /* instantiation is preserved in the list */ 111 TAILQ_HEAD(ifprefixhead, ifprefix); 112 TAILQ_HEAD(ifmultihead, ifmultiaddr); 113 114 /* 115 * Structure defining a queue for a network interface. 116 */ 117 struct ifqueue { 118 struct mbuf *ifq_head; 119 struct mbuf *ifq_tail; 120 int ifq_len; 121 int ifq_maxlen; 122 int ifq_drops; 123 }; 124 125 /* 126 * Note of IFPOLL_ENABLE 127 * 1) Any file(*.c) that depends on IFPOLL_ENABLE supports in this 128 * file should include opt_ifpoll.h at its beginning. 129 * 2) When struct changes, which are conditioned by IFPOLL_ENABLE, 130 * are to be introduced, please keep the struct's size and layout 131 * same, no matter whether IFPOLL_ENABLE is defined or not. 132 * See ifnet.if_npoll and ifnet.if_npoll_unused for example. 133 */ 134 135 enum ifnet_serialize { 136 IFNET_SERIALIZE_ALL, 137 IFNET_SERIALIZE_TX_BASE = 0x10000000, 138 }; 139 #define IFNET_SERIALIZE_TX(i) (IFNET_SERIALIZE_TX_BASE + (i)) 140 141 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 142 143 /* 144 * Structure defining a network interface. 145 * 146 * (Would like to call this struct ``if'', but C isn't PL/1.) 147 */ 148 149 /* 150 * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with 151 * one of these structures, typically held within an arpcom structure. 152 * 153 * struct <foo>_softc { 154 * struct arpcom { 155 * struct ifnet ac_if; 156 * ... 157 * } <arpcom> ; 158 * ... 159 * }; 160 * 161 * The assumption is used in a number of places, including many 162 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach(). 163 * 164 * Unfortunately devices' softc are opaque, so we depend on this layout 165 * to locate the struct ifnet from the softc in the generic code. 166 * 167 * MPSAFE NOTES: 168 * 169 * ifnet is protected by calling if_serialize, if_tryserialize and 170 * if_deserialize serialize functions with the ifnet_serialize parameter. 171 * ifnet.if_snd is protected by its own spinlock. Callers of if_ioctl, 172 * if_watchdog, if_init, if_resolvemulti, and if_poll should call the 173 * ifnet serialize functions with IFNET_SERIALIZE_ALL. Callers of if_start 174 * sould call the ifnet serialize functions with IFNET_SERIALIZE_TX. 175 * 176 * FIXME: Device drivers usually use the same serializer for their interrupt 177 * FIXME: but this is not required. 178 * 179 * Caller of if_output must not serialize ifnet by calling ifnet serialize 180 * functions; if_output will call the ifnet serialize functions based on 181 * its own needs. Caller of if_input does not necessarily hold the related 182 * serializer. 183 * 184 * If a device driver installs the same serializer for its interrupt 185 * as for ifnet, then the driver only really needs to worry about further 186 * serialization in timeout based entry points. All other entry points 187 * will already be serialized. Older ISA drivers still using the old 188 * interrupt infrastructure will have to obtain and release the serializer 189 * in their interrupt routine themselves. 190 */ 191 struct ifnet { 192 void *if_softc; /* pointer to driver state */ 193 void *if_l2com; /* pointer to protocol bits */ 194 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 195 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 196 const char *if_dname; /* driver name */ 197 int if_dunit; /* unit or IF_DUNIT_NONE */ 198 void *if_vlantrunks; /* vlan trunks */ 199 struct ifaddrhead *if_addrheads; /* array[NCPU] of TAILQs of addresses per if */ 200 int if_pcount; /* number of promiscuous listeners */ 201 void *if_carp; /* carp interfaces */ 202 struct bpf_if *if_bpf; /* packet filter structure */ 203 u_short if_index; /* numeric abbreviation for this if */ 204 short if_timer; /* time 'til if_watchdog called */ 205 int if_flags; /* up/down, broadcast, etc. */ 206 int if_capabilities; /* interface capabilities */ 207 int if_capenable; /* enabled features */ 208 void *if_linkmib; /* link-type-specific MIB data */ 209 size_t if_linkmiblen; /* length of above data */ 210 struct if_data if_data; 211 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 212 int if_amcount; /* number of all-multicast requests */ 213 /* procedure handles */ 214 int (*if_output) /* output routine (enqueue) */ 215 (struct ifnet *, struct mbuf *, struct sockaddr *, 216 struct rtentry *); 217 void (*if_input) /* input routine from hardware driver */ 218 (struct ifnet *, struct mbuf *); 219 void (*if_start) /* initiate output routine */ 220 (struct ifnet *, struct ifaltq_subque *); 221 int (*if_ioctl) /* ioctl routine */ 222 (struct ifnet *, u_long, caddr_t, struct ucred *); 223 void (*if_watchdog) /* timer routine */ 224 (struct ifnet *); 225 void (*if_init) /* Init routine */ 226 (void *); 227 int (*if_resolvemulti) /* validate/resolve multicast */ 228 (struct ifnet *, struct sockaddr **, struct sockaddr *); 229 void *if_unused5; 230 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 231 int (*if_mapsubq) 232 (struct ifaltq *, int); 233 int if_unused2; 234 void (*if_serialize) 235 (struct ifnet *, enum ifnet_serialize); 236 void (*if_deserialize) 237 (struct ifnet *, enum ifnet_serialize); 238 int (*if_tryserialize) 239 (struct ifnet *, enum ifnet_serialize); 240 #ifdef INVARIANTS 241 void (*if_serialize_assert) 242 (struct ifnet *, enum ifnet_serialize, boolean_t); 243 #else 244 /* Place holder */ 245 void (*if_serialize_unused)(void); 246 #endif 247 #ifdef IFPOLL_ENABLE 248 void (*if_npoll) 249 (struct ifnet *, struct ifpoll_info *); 250 #else 251 /* Place holder */ 252 void (*if_npoll_unused)(void); 253 #endif 254 int if_unused3; 255 struct ifaltq if_snd; /* output queue (includes altq) */ 256 struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 257 const uint8_t *if_broadcastaddr; 258 void *if_bridge; /* bridge glue */ 259 void *if_afdata[AF_MAX]; 260 struct ifaddr *if_lladdr; 261 struct lwkt_serialize *if_serializer; /* serializer or MP lock */ 262 struct lwkt_serialize if_default_serializer; /* if not supplied */ 263 struct mtx if_ioctl_mtx; /* high-level ioctl serializing mutex */ 264 int if_unused4; 265 void *if_unused6; 266 void *if_pf_kif; /* pf interface abstraction */ 267 void *if_unused7; 268 }; 269 typedef void if_init_f_t (void *); 270 271 #define if_mtu if_data.ifi_mtu 272 #define if_type if_data.ifi_type 273 #define if_physical if_data.ifi_physical 274 #define if_addrlen if_data.ifi_addrlen 275 #define if_hdrlen if_data.ifi_hdrlen 276 #define if_metric if_data.ifi_metric 277 #define if_link_state if_data.ifi_link_state 278 #define if_baudrate if_data.ifi_baudrate 279 #define if_hwassist if_data.ifi_hwassist 280 #define if_ipackets if_data.ifi_ipackets 281 #define if_ierrors if_data.ifi_ierrors 282 #define if_opackets if_data.ifi_opackets 283 #define if_oerrors if_data.ifi_oerrors 284 #define if_collisions if_data.ifi_collisions 285 #define if_ibytes if_data.ifi_ibytes 286 #define if_obytes if_data.ifi_obytes 287 #define if_imcasts if_data.ifi_imcasts 288 #define if_omcasts if_data.ifi_omcasts 289 #define if_iqdrops if_data.ifi_iqdrops 290 #define if_noproto if_data.ifi_noproto 291 #define if_lastchange if_data.ifi_lastchange 292 #define if_recvquota if_data.ifi_recvquota 293 #define if_xmitquota if_data.ifi_xmitquota 294 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL) 295 296 /* for compatibility with other BSDs */ 297 #define if_list if_link 298 299 #endif 300 301 /* 302 * Device private output queues and input queues are queues of messages 303 * stored on ifqueue structures (defined above). Entries are added to 304 * and deleted from these structures by these macros. 305 */ 306 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 307 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 308 #define IF_QLEN(ifq) ((ifq)->ifq_len) 309 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0) 310 311 #define IF_ENQUEUE(ifq, m) do { \ 312 (m)->m_nextpkt = NULL; \ 313 if ((ifq)->ifq_tail == NULL) \ 314 (ifq)->ifq_head = m; \ 315 else \ 316 (ifq)->ifq_tail->m_nextpkt = m; \ 317 (ifq)->ifq_tail = m; \ 318 (ifq)->ifq_len++; \ 319 } while (0) 320 321 #define IF_PREPEND(ifq, m) do { \ 322 (m)->m_nextpkt = (ifq)->ifq_head; \ 323 if ((ifq)->ifq_tail == NULL) \ 324 (ifq)->ifq_tail = (m); \ 325 (ifq)->ifq_head = (m); \ 326 (ifq)->ifq_len++; \ 327 } while (0) 328 329 #define IF_DEQUEUE(ifq, m) do { \ 330 (m) = (ifq)->ifq_head; \ 331 if (m) { \ 332 if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ 333 (ifq)->ifq_tail = NULL; \ 334 (m)->m_nextpkt = NULL; \ 335 (ifq)->ifq_len--; \ 336 } \ 337 } while (0) 338 339 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 340 341 #define IF_DRAIN(ifq) do { \ 342 struct mbuf *m; \ 343 while (1) { \ 344 IF_DEQUEUE(ifq, m); \ 345 if (m == NULL) \ 346 break; \ 347 m_freem(m); \ 348 } \ 349 } while (0) 350 351 #ifdef _KERNEL 352 353 /* interface link layer address change event */ 354 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 355 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 356 357 #ifdef INVARIANTS 358 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \ 359 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE) 360 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \ 361 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE) 362 363 #define ASSERT_IFNET_SERIALIZED_TX(ifp, ifsq) \ 364 (ifp)->if_serialize_assert((ifp), \ 365 IFNET_SERIALIZE_TX((ifsq)->ifsq_index), TRUE) 366 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp, ifsq) \ 367 (ifp)->if_serialize_assert((ifp), \ 368 IFNET_SERIALIZE_TX((ifsq)->ifsq_index), FALSE) 369 #else 370 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0) 371 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0) 372 #define ASSERT_IFNET_SERIALIZED_TX(ifp, ifsq) ((void)0) 373 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp, ifsq) ((void)0) 374 #endif 375 376 static __inline void 377 ifnet_serialize_all(struct ifnet *_ifp) 378 { 379 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL); 380 } 381 382 static __inline void 383 ifnet_deserialize_all(struct ifnet *_ifp) 384 { 385 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL); 386 } 387 388 static __inline int 389 ifnet_tryserialize_all(struct ifnet *_ifp) 390 { 391 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL); 392 } 393 394 static __inline void 395 ifnet_serialize_tx(struct ifnet *_ifp, const struct ifaltq_subque *_ifsq) 396 { 397 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_TX(_ifsq->ifsq_index)); 398 } 399 400 static __inline void 401 ifnet_deserialize_tx(struct ifnet *_ifp, const struct ifaltq_subque *_ifsq) 402 { 403 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_TX(_ifsq->ifsq_index)); 404 } 405 406 static __inline int 407 ifnet_tryserialize_tx(struct ifnet *_ifp, const struct ifaltq_subque *_ifsq) 408 { 409 return _ifp->if_tryserialize(_ifp, 410 IFNET_SERIALIZE_TX(_ifsq->ifsq_index)); 411 } 412 413 /* 414 * 72 was chosen below because it is the size of a TCP/IP 415 * header (40) + the minimum mss (32). 416 */ 417 #define IF_MINMTU 72 418 #define IF_MAXMTU 65535 419 420 #endif /* _KERNEL */ 421 422 struct in_ifaddr; 423 424 struct in_ifaddr_container { 425 struct in_ifaddr *ia; 426 LIST_ENTRY(in_ifaddr_container) ia_hash; 427 /* entry in bucket of inet addresses */ 428 TAILQ_ENTRY(in_ifaddr_container) ia_link; 429 /* list of internet addresses */ 430 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */ 431 }; 432 433 struct ifaddr_container { 434 #define IFA_CONTAINER_MAGIC 0x19810219 435 #define IFA_CONTAINER_DEAD 0xc0dedead 436 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */ 437 struct ifaddr *ifa; 438 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */ 439 u_int ifa_refcnt; /* references to this structure */ 440 uint16_t ifa_listmask; /* IFA_LIST_ */ 441 uint16_t ifa_prflags; /* protocol specific flags */ 442 443 /* 444 * Protocol specific states 445 */ 446 union { 447 struct in_ifaddr_container u_in_ifac; 448 } ifa_proto_u; 449 }; 450 451 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */ 452 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */ 453 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */ 454 455 #define IFA_PRF_FLAG0 0x01 456 #define IFA_PRF_FLAG1 0x02 457 #define IFA_PRF_FLAG2 0x04 458 #define IFA_PRF_FLAG3 0x08 459 460 /* 461 * The ifaddr structure contains information about one address 462 * of an interface. They are maintained by the different address families, 463 * are allocated and attached when an address is set, and are linked 464 * together so all addresses for an interface can be located. 465 */ 466 struct ifaddr { 467 struct sockaddr *ifa_addr; /* address of interface */ 468 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 469 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 470 struct sockaddr *ifa_netmask; /* used to determine subnet */ 471 struct if_data if_data; /* not all members are meaningful */ 472 struct ifnet *ifa_ifp; /* back-pointer to interface */ 473 void *ifa_link_pad; 474 struct ifaddr_container *ifa_containers; 475 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 476 (int, struct rtentry *, struct rt_addrinfo *); 477 u_short ifa_flags; /* mostly rt_flags for cloning */ 478 int ifa_ncnt; /* # of valid ifaddr_container */ 479 int ifa_metric; /* cost of going out this interface */ 480 #ifdef notdef 481 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 482 #endif 483 int (*ifa_claim_addr) /* check if an addr goes to this if */ 484 (struct ifaddr *, struct sockaddr *); 485 486 }; 487 #define IFA_ROUTE RTF_UP /* route installed */ 488 489 /* for compatibility with other BSDs */ 490 #define ifa_list ifa_link 491 492 /* 493 * The prefix structure contains information about one prefix 494 * of an interface. They are maintained by the different address families, 495 * are allocated and attached when an prefix or an address is set, 496 * and are linked together so all prefixes for an interface can be located. 497 */ 498 struct ifprefix { 499 struct sockaddr *ifpr_prefix; /* prefix of interface */ 500 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 501 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 502 u_char ifpr_plen; /* prefix length in bits */ 503 u_char ifpr_type; /* protocol dependent prefix type */ 504 }; 505 506 /* 507 * Multicast address structure. This is analogous to the ifaddr 508 * structure except that it keeps track of multicast addresses. 509 * Also, the reference count here is a count of requests for this 510 * address, not a count of pointers to this structure. 511 */ 512 struct ifmultiaddr { 513 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 514 struct sockaddr *ifma_addr; /* address this membership is for */ 515 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 516 struct ifnet *ifma_ifp; /* back-pointer to interface */ 517 u_int ifma_refcount; /* reference count */ 518 void *ifma_protospec; /* protocol-specific state, if any */ 519 }; 520 521 #ifdef _KERNEL 522 523 #ifndef _SYS_SERIALIZE2_H_ 524 #include <sys/serialize2.h> 525 #endif 526 527 enum ifaddr_event { 528 IFADDR_EVENT_ADD, 529 IFADDR_EVENT_DELETE, 530 IFADDR_EVENT_CHANGE 531 }; 532 533 /* interface address change event */ 534 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *, 535 enum ifaddr_event, struct ifaddr *); 536 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 537 /* new interface attach event */ 538 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *); 539 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t); 540 /* interface detach event */ 541 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *); 542 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t); 543 544 /* 545 * interface groups 546 */ 547 struct ifg_group { 548 char ifg_group[IFNAMSIZ]; 549 u_int ifg_refcnt; 550 void *ifg_pf_kif; 551 int ifg_carp_demoted; 552 TAILQ_HEAD(, ifg_member) ifg_members; 553 TAILQ_ENTRY(ifg_group) ifg_next; 554 }; 555 556 struct ifg_member { 557 TAILQ_ENTRY(ifg_member) ifgm_next; 558 struct ifnet *ifgm_ifp; 559 }; 560 561 struct ifg_list { 562 struct ifg_group *ifgl_group; 563 TAILQ_ENTRY(ifg_list) ifgl_next; 564 }; 565 566 /* group attach event */ 567 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 568 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 569 /* group detach event */ 570 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 571 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 572 /* group change event */ 573 typedef void (*group_change_event_handler_t)(void *, const char *); 574 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 575 576 577 #ifdef INVARIANTS 578 #define ASSERT_IFAC_VALID(ifac) do { \ 579 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \ 580 KKASSERT((ifac)->ifa_refcnt > 0); \ 581 } while (0) 582 #else 583 #define ASSERT_IFAC_VALID(ifac) ((void)0) 584 #endif 585 586 static __inline void 587 _IFAREF(struct ifaddr *_ifa, int _cpu_id) 588 { 589 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id]; 590 591 crit_enter(); 592 ASSERT_IFAC_VALID(_ifac); 593 ++_ifac->ifa_refcnt; 594 crit_exit(); 595 } 596 597 static __inline void 598 IFAREF(struct ifaddr *_ifa) 599 { 600 _IFAREF(_ifa, mycpuid); 601 } 602 603 #include <sys/malloc.h> 604 605 MALLOC_DECLARE(M_IFADDR); 606 MALLOC_DECLARE(M_IFMADDR); 607 MALLOC_DECLARE(M_IFNET); 608 609 void ifac_free(struct ifaddr_container *, int); 610 611 static __inline void 612 _IFAFREE(struct ifaddr *_ifa, int _cpu_id) 613 { 614 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id]; 615 616 crit_enter(); 617 ASSERT_IFAC_VALID(_ifac); 618 if (--_ifac->ifa_refcnt == 0) 619 ifac_free(_ifac, _cpu_id); 620 crit_exit(); 621 } 622 623 static __inline void 624 IFAFREE(struct ifaddr *_ifa) 625 { 626 _IFAFREE(_ifa, mycpuid); 627 } 628 629 struct lwkt_port *ifnet_portfn(int); 630 int ifnet_domsg(struct lwkt_msg *, int); 631 void ifnet_sendmsg(struct lwkt_msg *, int); 632 void ifnet_forwardmsg(struct lwkt_msg *, int); 633 struct ifnet *ifnet_byindex(unsigned short); 634 635 static __inline int 636 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu) 637 { 638 return ifnet_domsg(_lmsg, _cpu); 639 } 640 641 static __inline void 642 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu) 643 { 644 ifnet_sendmsg(_lmsg, _cpu); 645 } 646 647 static __inline void 648 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu) 649 { 650 ifnet_forwardmsg(_lmsg, _nextcpu); 651 } 652 653 static __inline int 654 ifnet_serialize_array_index(int _arrcnt, int _txoff, int _rxoff, 655 enum ifnet_serialize _slz) 656 { 657 int _off; 658 659 KASSERT(_slz & IFNET_SERIALIZE_TX_BASE, 660 ("unknown serializer %#x", _slz)); 661 _off = (_slz & ~IFNET_SERIALIZE_TX_BASE) + _txoff; 662 KASSERT(_off < _arrcnt, ("invalid TX serializer %#x", _slz)); 663 664 return _off; 665 } 666 667 static __inline void 668 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt, 669 int _txoff, int _rxoff, enum ifnet_serialize _slz) 670 { 671 int _off; 672 673 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) { 674 lwkt_serialize_array_enter(_arr, _arrcnt, 0); 675 return; 676 } 677 678 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 679 lwkt_serialize_enter(_arr[_off]); 680 } 681 682 static __inline void 683 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt, 684 int _txoff, int _rxoff, enum ifnet_serialize _slz) 685 { 686 int _off; 687 688 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) { 689 lwkt_serialize_array_exit(_arr, _arrcnt, 0); 690 return; 691 } 692 693 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 694 lwkt_serialize_exit(_arr[_off]); 695 } 696 697 static __inline int 698 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt, 699 int _txoff, int _rxoff, enum ifnet_serialize _slz) 700 { 701 int _off; 702 703 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) 704 return lwkt_serialize_array_try(_arr, _arrcnt, 0); 705 706 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 707 return lwkt_serialize_try(_arr[_off]); 708 } 709 710 #ifdef INVARIANTS 711 712 static __inline void 713 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt, 714 int _txoff, int _rxoff, enum ifnet_serialize _slz, boolean_t _serialized) 715 { 716 int _off; 717 718 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) { 719 int _i; 720 721 if (_serialized) { 722 for (_i = 0; _i < _arrcnt; ++_i) 723 ASSERT_SERIALIZED(_arr[_i]); 724 } else { 725 for (_i = 0; _i < _arrcnt; ++_i) 726 ASSERT_NOT_SERIALIZED(_arr[_i]); 727 } 728 return; 729 } 730 731 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 732 if (_serialized) 733 ASSERT_SERIALIZED(_arr[_off]); 734 else 735 ASSERT_NOT_SERIALIZED(_arr[_off]); 736 } 737 738 #endif /* INVARIANTS */ 739 740 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */ 741 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */ 742 743 extern struct ifnethead ifnet; 744 extern struct ifnet **ifindex2ifnet; 745 extern int ifqmaxlen; 746 extern struct ifnet loif[]; 747 extern int if_index; 748 749 struct ip; 750 struct tcphdr; 751 752 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *); 753 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int, 754 struct lwkt_serialize *); 755 void ether_ifdetach(struct ifnet *); 756 void ether_demux(struct mbuf *); 757 void ether_demux_oncpu(struct ifnet *, struct mbuf *); 758 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int); 759 void ether_input_pkt(struct ifnet *, struct mbuf *, const struct pktinfo *); 760 int ether_output_frame(struct ifnet *, struct mbuf *); 761 int ether_ioctl(struct ifnet *, u_long, caddr_t); 762 u_char *kether_aton(const char *, u_char *); 763 char *kether_ntoa(const u_char *, char *); 764 boolean_t ether_tso_pullup(struct mbuf **, int *, struct ip **, int *, 765 struct tcphdr **, int *); 766 struct ifnet *ether_bridge_interface(struct ifnet *ifp); 767 uint32_t ether_crc32_le(const uint8_t *, size_t); 768 uint32_t ether_crc32_be(const uint8_t *, size_t); 769 770 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 771 int if_allmulti(struct ifnet *, int); 772 void if_attach(struct ifnet *, struct lwkt_serialize *); 773 int if_delmulti(struct ifnet *, struct sockaddr *); 774 void if_delallmulti(struct ifnet *ifp); 775 void if_purgeaddrs_nolink(struct ifnet *); 776 void if_detach(struct ifnet *); 777 void if_down(struct ifnet *); 778 void if_link_state_change(struct ifnet *); 779 void if_initname(struct ifnet *, const char *, int); 780 int if_getanyethermac(uint16_t *, int); 781 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 782 struct ifnet *if_alloc(uint8_t); 783 void if_free(struct ifnet *); 784 void if_route(struct ifnet *, int flag, int fam); 785 int if_setlladdr(struct ifnet *, const u_char *, int); 786 void if_unroute(struct ifnet *, int flag, int fam); 787 void if_up(struct ifnet *); 788 /*void ifinit(void);*/ /* declared in systm.h for main() */ 789 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *); 790 int ifpromisc(struct ifnet *, int); 791 struct ifnet *ifunit(const char *); 792 struct ifnet *if_withname(struct sockaddr *); 793 794 struct ifg_group *if_creategroup(const char *); 795 int if_addgroup(struct ifnet *, const char *); 796 int if_delgroup(struct ifnet *, const char *); 797 int if_getgroup(caddr_t, struct ifnet *); 798 int if_getgroupmembers(caddr_t); 799 800 struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 801 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 802 struct ifaddr *ifa_ifwithnet(struct sockaddr *); 803 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 804 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 805 806 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 807 typedef void if_com_free_t(void *com, u_char type); 808 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *); 809 void if_deregister_com_alloc(u_char); 810 811 void *ifa_create(int, int); 812 void ifa_destroy(struct ifaddr *); 813 void ifa_iflink(struct ifaddr *, struct ifnet *, int); 814 void ifa_ifunlink(struct ifaddr *, struct ifnet *); 815 816 struct ifaddr *ifaddr_byindex(unsigned short); 817 818 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *); 819 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 820 void if_devstart(struct ifnet *ifp); /* COMPAT */ 821 void if_devstart_sched(struct ifnet *ifp); /* COMPAT */ 822 int if_ring_count2(int cnt, int cnt_max); 823 824 #define IF_LLSOCKADDR(ifp) \ 825 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr) 826 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp)) 827 828 #ifdef IFPOLL_ENABLE 829 int ifpoll_register(struct ifnet *); 830 int ifpoll_deregister(struct ifnet *); 831 #endif /* IFPOLL_ENABLE */ 832 833 #endif /* _KERNEL */ 834 835 #endif /* !_NET_IF_VAR_H_ */ 836