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