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 IFNET_SERIALIZE_TX_BASE = 0x10000000, 139 }; 140 #define IFNET_SERIALIZE_TX(i) (IFNET_SERIALIZE_TX_BASE + (i)) 141 142 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 143 144 /* 145 * Structure defining a network interface. 146 * 147 * (Would like to call this struct ``if'', but C isn't PL/1.) 148 */ 149 150 /* 151 * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with 152 * one of these structures, typically held within an arpcom structure. 153 * 154 * struct <foo>_softc { 155 * struct arpcom { 156 * struct ifnet ac_if; 157 * ... 158 * } <arpcom> ; 159 * ... 160 * }; 161 * 162 * The assumption is used in a number of places, including many 163 * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach(). 164 * 165 * Unfortunately devices' softc are opaque, so we depend on this layout 166 * to locate the struct ifnet from the softc in the generic code. 167 * 168 * MPSAFE NOTES: 169 * 170 * ifnet is protected by calling if_serialize, if_tryserialize and 171 * if_deserialize serialize functions with the ifnet_serialize parameter. 172 * ifnet.if_snd is protected by its own spinlock. Callers of if_ioctl, 173 * if_watchdog, if_init, if_resolvemulti, and if_poll should call the 174 * ifnet serialize functions with IFNET_SERIALIZE_ALL. Callers of if_start 175 * sould call the ifnet serialize functions with IFNET_SERIALIZE_TX. 176 * 177 * FIXME: Device drivers usually use the same serializer for their interrupt 178 * FIXME: but this is not required. 179 * 180 * Caller of if_output must not serialize ifnet by calling ifnet serialize 181 * functions; if_output will call the ifnet serialize functions based on 182 * its own needs. Caller of if_input does not necessarily hold the related 183 * serializer. 184 * 185 * If a device driver installs the same serializer for its interrupt 186 * as for ifnet, then the driver only really needs to worry about further 187 * serialization in timeout based entry points. All other entry points 188 * will already be serialized. Older ISA drivers still using the old 189 * interrupt infrastructure will have to obtain and release the serializer 190 * in their interrupt routine themselves. 191 */ 192 struct ifnet { 193 void *if_softc; /* pointer to driver state */ 194 void *if_l2com; /* pointer to protocol bits */ 195 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 196 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 197 const char *if_dname; /* driver name */ 198 int if_dunit; /* unit or IF_DUNIT_NONE */ 199 void *if_vlantrunks; /* vlan trunks */ 200 struct ifaddrhead *if_addrheads; /* array[NCPU] of TAILQs of addresses per if */ 201 int if_pcount; /* number of promiscuous listeners */ 202 void *if_carp; /* carp interfaces */ 203 struct bpf_if *if_bpf; /* packet filter structure */ 204 u_short if_index; /* numeric abbreviation for this if */ 205 short if_timer; /* time 'til if_watchdog called */ 206 int if_flags; /* up/down, broadcast, etc. */ 207 int if_capabilities; /* interface capabilities */ 208 int if_capenable; /* enabled features */ 209 void *if_linkmib; /* link-type-specific MIB data */ 210 size_t if_linkmiblen; /* length of above data */ 211 struct if_data if_data; 212 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 213 int if_amcount; /* number of all-multicast requests */ 214 /* procedure handles */ 215 int (*if_output) /* output routine (enqueue) */ 216 (struct ifnet *, struct mbuf *, struct sockaddr *, 217 struct rtentry *); 218 void (*if_input) /* input routine from hardware driver */ 219 (struct ifnet *, struct mbuf *); 220 void (*if_start) /* initiate output routine */ 221 (struct ifnet *, struct ifaltq_subque *); 222 int (*if_ioctl) /* ioctl routine */ 223 (struct ifnet *, u_long, caddr_t, struct ucred *); 224 void (*if_watchdog) /* timer routine */ 225 (struct ifnet *); 226 void (*if_init) /* Init routine */ 227 (void *); 228 int (*if_resolvemulti) /* validate/resolve multicast */ 229 (struct ifnet *, struct sockaddr **, struct sockaddr *); 230 void *if_unused5; 231 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 232 int (*if_mapsubq) 233 (struct ifaltq *, int); 234 int if_unused2; 235 void (*if_serialize) 236 (struct ifnet *, enum ifnet_serialize); 237 void (*if_deserialize) 238 (struct ifnet *, enum ifnet_serialize); 239 int (*if_tryserialize) 240 (struct ifnet *, enum ifnet_serialize); 241 #ifdef INVARIANTS 242 void (*if_serialize_assert) 243 (struct ifnet *, enum ifnet_serialize, boolean_t); 244 #else 245 /* Place holder */ 246 void (*if_serialize_unused)(void); 247 #endif 248 #ifdef IFPOLL_ENABLE 249 void (*if_npoll) 250 (struct ifnet *, struct ifpoll_info *); 251 #else 252 /* Place holder */ 253 void (*if_npoll_unused)(void); 254 #endif 255 int if_tsolen; /* max TSO length */ 256 struct ifaltq if_snd; /* output queue (includes altq) */ 257 struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 258 const uint8_t *if_broadcastaddr; 259 void *if_bridge; /* bridge glue */ 260 void *if_afdata[AF_MAX]; 261 struct ifaddr *if_lladdr; 262 struct lwkt_serialize *if_serializer; /* serializer or MP lock */ 263 struct lwkt_serialize if_default_serializer; /* if not supplied */ 264 struct mtx if_ioctl_mtx; /* high-level ioctl serializing mutex */ 265 int if_unused4; 266 struct ifdata_pcpu *if_data_pcpu; 267 void *if_pf_kif; /* pf interface abstraction */ 268 void *if_unused7; 269 }; 270 typedef void if_init_f_t (void *); 271 272 #define if_mtu if_data.ifi_mtu 273 #define if_type if_data.ifi_type 274 #define if_physical if_data.ifi_physical 275 #define if_addrlen if_data.ifi_addrlen 276 #define if_hdrlen if_data.ifi_hdrlen 277 #define if_metric if_data.ifi_metric 278 #define if_link_state if_data.ifi_link_state 279 #define if_baudrate if_data.ifi_baudrate 280 #define if_hwassist if_data.ifi_hwassist 281 #define if_ipackets if_data.ifi_ipackets 282 #define if_ierrors if_data.ifi_ierrors 283 #define if_opackets if_data.ifi_opackets 284 #define if_oerrors if_data.ifi_oerrors 285 #define if_collisions if_data.ifi_collisions 286 #define if_ibytes if_data.ifi_ibytes 287 #define if_obytes if_data.ifi_obytes 288 #define if_imcasts if_data.ifi_imcasts 289 #define if_omcasts if_data.ifi_omcasts 290 #define if_iqdrops if_data.ifi_iqdrops 291 #define if_noproto if_data.ifi_noproto 292 #define if_lastchange if_data.ifi_lastchange 293 #define if_recvquota if_data.ifi_recvquota 294 #define if_xmitquota if_data.ifi_xmitquota 295 #define if_rawoutput(if, m, sa) if_output(if, m, sa, NULL) 296 297 /* for compatibility with other BSDs */ 298 #define if_list if_link 299 300 struct ifdata_pcpu { 301 u_long ifd_ipackets; /* packets received on interface */ 302 u_long ifd_ierrors; /* input errors on interface */ 303 u_long ifd_opackets; /* packets sent on interface */ 304 u_long ifd_oerrors; /* output errors on interface */ 305 u_long ifd_collisions; /* collisions on csma interfaces */ 306 u_long ifd_ibytes; /* total number of octets received */ 307 u_long ifd_obytes; /* total number of octets sent */ 308 u_long ifd_imcasts; /* packets received via multicast */ 309 u_long ifd_omcasts; /* packets sent via multicast */ 310 u_long ifd_iqdrops; /* dropped on input, this interface */ 311 u_long ifd_noproto; /* destined for unsupported protocol */ 312 } __cachealign; 313 314 #endif 315 316 /* 317 * Device private output queues and input queues are queues of messages 318 * stored on ifqueue structures (defined above). Entries are added to 319 * and deleted from these structures by these macros. 320 */ 321 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 322 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 323 #define IF_QLEN(ifq) ((ifq)->ifq_len) 324 #define IF_QEMPTY(ifq) (IF_QLEN(ifq) == 0) 325 326 #define IF_ENQUEUE(ifq, m) do { \ 327 (m)->m_nextpkt = NULL; \ 328 if ((ifq)->ifq_tail == NULL) \ 329 (ifq)->ifq_head = m; \ 330 else \ 331 (ifq)->ifq_tail->m_nextpkt = m; \ 332 (ifq)->ifq_tail = m; \ 333 (ifq)->ifq_len++; \ 334 } while (0) 335 336 #define IF_PREPEND(ifq, m) do { \ 337 (m)->m_nextpkt = (ifq)->ifq_head; \ 338 if ((ifq)->ifq_tail == NULL) \ 339 (ifq)->ifq_tail = (m); \ 340 (ifq)->ifq_head = (m); \ 341 (ifq)->ifq_len++; \ 342 } while (0) 343 344 #define IF_DEQUEUE(ifq, m) do { \ 345 (m) = (ifq)->ifq_head; \ 346 if (m) { \ 347 if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ 348 (ifq)->ifq_tail = NULL; \ 349 (m)->m_nextpkt = NULL; \ 350 (ifq)->ifq_len--; \ 351 } \ 352 } while (0) 353 354 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 355 356 #define IF_DRAIN(ifq) do { \ 357 struct mbuf *m; \ 358 while (1) { \ 359 IF_DEQUEUE(ifq, m); \ 360 if (m == NULL) \ 361 break; \ 362 m_freem(m); \ 363 } \ 364 } while (0) 365 366 #ifdef _KERNEL 367 368 /* interface link layer address change event */ 369 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 370 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 371 372 #ifdef INVARIANTS 373 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) \ 374 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, TRUE) 375 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) \ 376 (ifp)->if_serialize_assert((ifp), IFNET_SERIALIZE_ALL, FALSE) 377 378 #define ASSERT_IFNET_SERIALIZED_TX(ifp, ifsq) \ 379 (ifp)->if_serialize_assert((ifp), \ 380 IFNET_SERIALIZE_TX((ifsq)->ifsq_index), TRUE) 381 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp, ifsq) \ 382 (ifp)->if_serialize_assert((ifp), \ 383 IFNET_SERIALIZE_TX((ifsq)->ifsq_index), FALSE) 384 #else 385 #define ASSERT_IFNET_SERIALIZED_ALL(ifp) ((void)0) 386 #define ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp) ((void)0) 387 #define ASSERT_IFNET_SERIALIZED_TX(ifp, ifsq) ((void)0) 388 #define ASSERT_IFNET_NOT_SERIALIZED_TX(ifp, ifsq) ((void)0) 389 #endif 390 391 static __inline void 392 ifnet_serialize_all(struct ifnet *_ifp) 393 { 394 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_ALL); 395 } 396 397 static __inline void 398 ifnet_deserialize_all(struct ifnet *_ifp) 399 { 400 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_ALL); 401 } 402 403 static __inline int 404 ifnet_tryserialize_all(struct ifnet *_ifp) 405 { 406 return _ifp->if_tryserialize(_ifp, IFNET_SERIALIZE_ALL); 407 } 408 409 static __inline void 410 ifnet_serialize_tx(struct ifnet *_ifp, const struct ifaltq_subque *_ifsq) 411 { 412 _ifp->if_serialize(_ifp, IFNET_SERIALIZE_TX(_ifsq->ifsq_index)); 413 } 414 415 static __inline void 416 ifnet_deserialize_tx(struct ifnet *_ifp, const struct ifaltq_subque *_ifsq) 417 { 418 _ifp->if_deserialize(_ifp, IFNET_SERIALIZE_TX(_ifsq->ifsq_index)); 419 } 420 421 static __inline int 422 ifnet_tryserialize_tx(struct ifnet *_ifp, const struct ifaltq_subque *_ifsq) 423 { 424 return _ifp->if_tryserialize(_ifp, 425 IFNET_SERIALIZE_TX(_ifsq->ifsq_index)); 426 } 427 428 /* 429 * 72 was chosen below because it is the size of a TCP/IP 430 * header (40) + the minimum mss (32). 431 */ 432 #define IF_MINMTU 72 433 #define IF_MAXMTU 65535 434 435 #endif /* _KERNEL */ 436 437 struct in_ifaddr; 438 439 struct in_ifaddr_container { 440 struct in_ifaddr *ia; 441 LIST_ENTRY(in_ifaddr_container) ia_hash; 442 /* entry in bucket of inet addresses */ 443 TAILQ_ENTRY(in_ifaddr_container) ia_link; 444 /* list of internet addresses */ 445 struct ifaddr_container *ia_ifac; /* parent ifaddr_container */ 446 }; 447 448 struct ifaddr_container { 449 #define IFA_CONTAINER_MAGIC 0x19810219 450 #define IFA_CONTAINER_DEAD 0xc0dedead 451 uint32_t ifa_magic; /* IFA_CONTAINER_MAGIC */ 452 struct ifaddr *ifa; 453 TAILQ_ENTRY(ifaddr_container) ifa_link; /* queue macro glue */ 454 u_int ifa_refcnt; /* references to this structure */ 455 uint16_t ifa_listmask; /* IFA_LIST_ */ 456 uint16_t ifa_prflags; /* protocol specific flags */ 457 458 u_long ifa_ipackets; /* packets received on addr */ 459 u_long ifa_ibytes; /* bytes received on addr */ 460 u_long ifa_opackets; /* packets sent on addr */ 461 u_long ifa_obytes; /* bytes sent on addr */ 462 463 /* 464 * Protocol specific states 465 */ 466 union { 467 struct in_ifaddr_container u_in_ifac; 468 } ifa_proto_u; 469 } __cachealign; 470 471 #define IFA_LIST_IFADDRHEAD 0x01 /* on ifnet.if_addrheads[cpuid] */ 472 #define IFA_LIST_IN_IFADDRHEAD 0x02 /* on in_ifaddrheads[cpuid] */ 473 #define IFA_LIST_IN_IFADDRHASH 0x04 /* on in_ifaddrhashtbls[cpuid] */ 474 475 #define IFA_PRF_FLAG0 0x01 476 #define IFA_PRF_FLAG1 0x02 477 #define IFA_PRF_FLAG2 0x04 478 #define IFA_PRF_FLAG3 0x08 479 480 /* 481 * The ifaddr structure contains information about one address 482 * of an interface. They are maintained by the different address families, 483 * are allocated and attached when an address is set, and are linked 484 * together so all addresses for an interface can be located. 485 */ 486 struct ifaddr { 487 struct sockaddr *ifa_addr; /* address of interface */ 488 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 489 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 490 struct sockaddr *ifa_netmask; /* used to determine subnet */ 491 struct if_data if_data; /* not all members are meaningful */ 492 struct ifnet *ifa_ifp; /* back-pointer to interface */ 493 void *ifa_link_pad; 494 struct ifaddr_container *ifa_containers; 495 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 496 (int, struct rtentry *, struct rt_addrinfo *); 497 u_short ifa_flags; /* mostly rt_flags for cloning */ 498 int ifa_ncnt; /* # of valid ifaddr_container */ 499 int ifa_metric; /* cost of going out this interface */ 500 #ifdef notdef 501 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 502 #endif 503 int (*ifa_claim_addr) /* check if an addr goes to this if */ 504 (struct ifaddr *, struct sockaddr *); 505 506 }; 507 #define IFA_ROUTE RTF_UP /* route installed */ 508 509 /* for compatibility with other BSDs */ 510 #define ifa_list ifa_link 511 512 /* 513 * The prefix structure contains information about one prefix 514 * of an interface. They are maintained by the different address families, 515 * are allocated and attached when an prefix or an address is set, 516 * and are linked together so all prefixes for an interface can be located. 517 */ 518 struct ifprefix { 519 struct sockaddr *ifpr_prefix; /* prefix of interface */ 520 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 521 TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 522 u_char ifpr_plen; /* prefix length in bits */ 523 u_char ifpr_type; /* protocol dependent prefix type */ 524 }; 525 526 /* 527 * Multicast address structure. This is analogous to the ifaddr 528 * structure except that it keeps track of multicast addresses. 529 * Also, the reference count here is a count of requests for this 530 * address, not a count of pointers to this structure. 531 */ 532 struct ifmultiaddr { 533 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 534 struct sockaddr *ifma_addr; /* address this membership is for */ 535 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 536 struct ifnet *ifma_ifp; /* back-pointer to interface */ 537 u_int ifma_refcount; /* reference count */ 538 void *ifma_protospec; /* protocol-specific state, if any */ 539 }; 540 541 #ifdef _KERNEL 542 543 #define IFA_STAT_INC(ifa, name, v) \ 544 do { \ 545 (ifa)->ifa_containers[mycpuid].ifa_##name += (v); \ 546 } while (0) 547 548 #define IFNET_STAT_INC(ifp, name, v) \ 549 do { \ 550 (ifp)->if_data_pcpu[mycpuid].ifd_##name += (v); \ 551 } while (0) 552 553 #define IFNET_STAT_SET(ifp, name, v) \ 554 do { \ 555 int _cpu; \ 556 (ifp)->if_data_pcpu[0].ifd_##name = (v); \ 557 for (_cpu = 1; _cpu < ncpus; ++_cpu) \ 558 (ifp)->if_data_pcpu[_cpu].ifd_##name = 0; \ 559 } while (0) 560 561 #define IFNET_STAT_GET(ifp, name, v) \ 562 do { \ 563 int _cpu; \ 564 (v) = (ifp)->if_data_pcpu[0].ifd_##name; \ 565 for (_cpu = 1; _cpu < ncpus; ++_cpu) \ 566 (v) += (ifp)->if_data_pcpu[_cpu].ifd_##name; \ 567 } while (0) 568 569 #ifndef _SYS_SERIALIZE2_H_ 570 #include <sys/serialize2.h> 571 #endif 572 573 enum ifaddr_event { 574 IFADDR_EVENT_ADD, 575 IFADDR_EVENT_DELETE, 576 IFADDR_EVENT_CHANGE 577 }; 578 579 /* interface address change event */ 580 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *, 581 enum ifaddr_event, struct ifaddr *); 582 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 583 /* new interface attach event */ 584 typedef void (*ifnet_attach_event_handler_t)(void *, struct ifnet *); 585 EVENTHANDLER_DECLARE(ifnet_attach_event, ifnet_attach_event_handler_t); 586 /* interface detach event */ 587 typedef void (*ifnet_detach_event_handler_t)(void *, struct ifnet *); 588 EVENTHANDLER_DECLARE(ifnet_detach_event, ifnet_detach_event_handler_t); 589 590 /* 591 * interface groups 592 */ 593 struct ifg_group { 594 char ifg_group[IFNAMSIZ]; 595 u_int ifg_refcnt; 596 void *ifg_pf_kif; 597 int ifg_carp_demoted; 598 TAILQ_HEAD(, ifg_member) ifg_members; 599 TAILQ_ENTRY(ifg_group) ifg_next; 600 }; 601 602 struct ifg_member { 603 TAILQ_ENTRY(ifg_member) ifgm_next; 604 struct ifnet *ifgm_ifp; 605 }; 606 607 struct ifg_list { 608 struct ifg_group *ifgl_group; 609 TAILQ_ENTRY(ifg_list) ifgl_next; 610 }; 611 612 /* group attach event */ 613 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 614 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 615 /* group detach event */ 616 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 617 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 618 /* group change event */ 619 typedef void (*group_change_event_handler_t)(void *, const char *); 620 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 621 622 623 #ifdef INVARIANTS 624 #define ASSERT_IFAC_VALID(ifac) do { \ 625 KKASSERT((ifac)->ifa_magic == IFA_CONTAINER_MAGIC); \ 626 KKASSERT((ifac)->ifa_refcnt > 0); \ 627 } while (0) 628 #else 629 #define ASSERT_IFAC_VALID(ifac) ((void)0) 630 #endif 631 632 static __inline void 633 _IFAREF(struct ifaddr *_ifa, int _cpu_id) 634 { 635 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id]; 636 637 crit_enter(); 638 ASSERT_IFAC_VALID(_ifac); 639 ++_ifac->ifa_refcnt; 640 crit_exit(); 641 } 642 643 static __inline void 644 IFAREF(struct ifaddr *_ifa) 645 { 646 _IFAREF(_ifa, mycpuid); 647 } 648 649 #include <sys/malloc.h> 650 651 MALLOC_DECLARE(M_IFADDR); 652 MALLOC_DECLARE(M_IFMADDR); 653 MALLOC_DECLARE(M_IFNET); 654 655 void ifac_free(struct ifaddr_container *, int); 656 657 static __inline void 658 _IFAFREE(struct ifaddr *_ifa, int _cpu_id) 659 { 660 struct ifaddr_container *_ifac = &_ifa->ifa_containers[_cpu_id]; 661 662 crit_enter(); 663 ASSERT_IFAC_VALID(_ifac); 664 if (--_ifac->ifa_refcnt == 0) 665 ifac_free(_ifac, _cpu_id); 666 crit_exit(); 667 } 668 669 static __inline void 670 IFAFREE(struct ifaddr *_ifa) 671 { 672 _IFAFREE(_ifa, mycpuid); 673 } 674 675 struct lwkt_port *ifnet_portfn(int); 676 int ifnet_domsg(struct lwkt_msg *, int); 677 void ifnet_sendmsg(struct lwkt_msg *, int); 678 void ifnet_forwardmsg(struct lwkt_msg *, int); 679 struct ifnet *ifnet_byindex(unsigned short); 680 681 static __inline int 682 ifa_domsg(struct lwkt_msg *_lmsg, int _cpu) 683 { 684 return ifnet_domsg(_lmsg, _cpu); 685 } 686 687 static __inline void 688 ifa_sendmsg(struct lwkt_msg *_lmsg, int _cpu) 689 { 690 ifnet_sendmsg(_lmsg, _cpu); 691 } 692 693 static __inline void 694 ifa_forwardmsg(struct lwkt_msg *_lmsg, int _nextcpu) 695 { 696 ifnet_forwardmsg(_lmsg, _nextcpu); 697 } 698 699 static __inline int 700 ifnet_serialize_array_index(int _arrcnt, int _txoff, int _rxoff, 701 enum ifnet_serialize _slz) 702 { 703 int _off; 704 705 KASSERT(_slz & IFNET_SERIALIZE_TX_BASE, 706 ("unknown serializer %#x", _slz)); 707 _off = (_slz & ~IFNET_SERIALIZE_TX_BASE) + _txoff; 708 KASSERT(_off < _arrcnt, ("invalid TX serializer %#x", _slz)); 709 710 return _off; 711 } 712 713 static __inline void 714 ifnet_serialize_array_enter(lwkt_serialize_t *_arr, int _arrcnt, 715 int _txoff, int _rxoff, enum ifnet_serialize _slz) 716 { 717 int _off; 718 719 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) { 720 lwkt_serialize_array_enter(_arr, _arrcnt, 0); 721 return; 722 } 723 724 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 725 lwkt_serialize_enter(_arr[_off]); 726 } 727 728 static __inline void 729 ifnet_serialize_array_exit(lwkt_serialize_t *_arr, int _arrcnt, 730 int _txoff, int _rxoff, enum ifnet_serialize _slz) 731 { 732 int _off; 733 734 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) { 735 lwkt_serialize_array_exit(_arr, _arrcnt, 0); 736 return; 737 } 738 739 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 740 lwkt_serialize_exit(_arr[_off]); 741 } 742 743 static __inline int 744 ifnet_serialize_array_try(lwkt_serialize_t *_arr, int _arrcnt, 745 int _txoff, int _rxoff, enum ifnet_serialize _slz) 746 { 747 int _off; 748 749 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) 750 return lwkt_serialize_array_try(_arr, _arrcnt, 0); 751 752 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 753 return lwkt_serialize_try(_arr[_off]); 754 } 755 756 #ifdef INVARIANTS 757 758 static __inline void 759 ifnet_serialize_array_assert(lwkt_serialize_t *_arr, int _arrcnt, 760 int _txoff, int _rxoff, enum ifnet_serialize _slz, boolean_t _serialized) 761 { 762 int _off; 763 764 if (__predict_false(_slz == IFNET_SERIALIZE_ALL)) { 765 int _i; 766 767 if (_serialized) { 768 for (_i = 0; _i < _arrcnt; ++_i) 769 ASSERT_SERIALIZED(_arr[_i]); 770 } else { 771 for (_i = 0; _i < _arrcnt; ++_i) 772 ASSERT_NOT_SERIALIZED(_arr[_i]); 773 } 774 return; 775 } 776 777 _off = ifnet_serialize_array_index(_arrcnt, _txoff, _rxoff, _slz); 778 if (_serialized) 779 ASSERT_SERIALIZED(_arr[_off]); 780 else 781 ASSERT_NOT_SERIALIZED(_arr[_off]); 782 } 783 784 #endif /* INVARIANTS */ 785 786 #define REINPUT_KEEPRCVIF 0x0001 /* ether_reinput_oncpu() */ 787 #define REINPUT_RUNBPF 0x0002 /* ether_reinput_oncpu() */ 788 789 extern struct ifnethead ifnet; 790 extern struct ifnet **ifindex2ifnet; 791 extern int ifqmaxlen; 792 extern struct ifnet loif[]; 793 extern int if_index; 794 795 struct ip; 796 struct tcphdr; 797 798 void ether_ifattach(struct ifnet *, uint8_t *, struct lwkt_serialize *); 799 void ether_ifattach_bpf(struct ifnet *, uint8_t *, u_int, u_int, 800 struct lwkt_serialize *); 801 void ether_ifdetach(struct ifnet *); 802 void ether_demux(struct mbuf *); 803 void ether_demux_oncpu(struct ifnet *, struct mbuf *); 804 void ether_reinput_oncpu(struct ifnet *, struct mbuf *, int); 805 void ether_input_pkt(struct ifnet *, struct mbuf *, const struct pktinfo *); 806 int ether_output_frame(struct ifnet *, struct mbuf *); 807 int ether_ioctl(struct ifnet *, u_long, caddr_t); 808 u_char *kether_aton(const char *, u_char *); 809 char *kether_ntoa(const u_char *, char *); 810 boolean_t ether_tso_pullup(struct mbuf **, int *, struct ip **, int *, 811 struct tcphdr **, int *); 812 struct ifnet *ether_bridge_interface(struct ifnet *ifp); 813 uint32_t ether_crc32_le(const uint8_t *, size_t); 814 uint32_t ether_crc32_be(const uint8_t *, size_t); 815 816 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 817 int if_allmulti(struct ifnet *, int); 818 void if_attach(struct ifnet *, struct lwkt_serialize *); 819 int if_delmulti(struct ifnet *, struct sockaddr *); 820 void if_delallmulti(struct ifnet *ifp); 821 void if_purgeaddrs_nolink(struct ifnet *); 822 void if_detach(struct ifnet *); 823 void if_down(struct ifnet *); 824 void if_link_state_change(struct ifnet *); 825 void if_initname(struct ifnet *, const char *, int); 826 int if_getanyethermac(uint16_t *, int); 827 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 828 struct ifnet *if_alloc(uint8_t); 829 void if_free(struct ifnet *); 830 void if_route(struct ifnet *, int flag, int fam); 831 int if_setlladdr(struct ifnet *, const u_char *, int); 832 void if_unroute(struct ifnet *, int flag, int fam); 833 void if_up(struct ifnet *); 834 /*void ifinit(void);*/ /* declared in systm.h for main() */ 835 int ifioctl(struct socket *, u_long, caddr_t, struct ucred *); 836 int ifpromisc(struct ifnet *, int); 837 struct ifnet *ifunit(const char *); 838 struct ifnet *if_withname(struct sockaddr *); 839 840 struct ifg_group *if_creategroup(const char *); 841 int if_addgroup(struct ifnet *, const char *); 842 int if_delgroup(struct ifnet *, const char *); 843 int if_getgroup(caddr_t, struct ifnet *); 844 int if_getgroupmembers(caddr_t); 845 846 struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 847 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 848 struct ifaddr *ifa_ifwithnet(struct sockaddr *); 849 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 850 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 851 852 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 853 typedef void if_com_free_t(void *com, u_char type); 854 void if_register_com_alloc(u_char, if_com_alloc_t *a, if_com_free_t *); 855 void if_deregister_com_alloc(u_char); 856 857 void *ifa_create(int, int); 858 void ifa_destroy(struct ifaddr *); 859 void ifa_iflink(struct ifaddr *, struct ifnet *, int); 860 void ifa_ifunlink(struct ifaddr *, struct ifnet *); 861 862 struct ifaddr *ifaddr_byindex(unsigned short); 863 864 struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *); 865 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 866 void if_devstart(struct ifnet *ifp); /* COMPAT */ 867 void if_devstart_sched(struct ifnet *ifp); /* COMPAT */ 868 int if_ring_count2(int cnt, int cnt_max); 869 870 #define IF_LLSOCKADDR(ifp) \ 871 ((struct sockaddr_dl *)(ifp)->if_lladdr->ifa_addr) 872 #define IF_LLADDR(ifp) LLADDR(IF_LLSOCKADDR(ifp)) 873 874 #ifdef IFPOLL_ENABLE 875 int ifpoll_register(struct ifnet *); 876 int ifpoll_deregister(struct ifnet *); 877 #endif /* IFPOLL_ENABLE */ 878 879 #endif /* _KERNEL */ 880 881 #endif /* !_NET_IF_VAR_H_ */ 882