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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * From: @(#)if.h 8.1 (Berkeley) 6/10/93 30 * $FreeBSD$ 31 */ 32 33 #ifndef _NET_IF_VAR_H_ 34 #define _NET_IF_VAR_H_ 35 36 /* 37 * Structures defining a network interface, providing a packet 38 * transport mechanism (ala level 0 of the PUP protocols). 39 * 40 * Each interface accepts output datagrams of a specified maximum 41 * length, and provides higher level routines with input datagrams 42 * received from its medium. 43 * 44 * Output occurs when the routine if_output is called, with three parameters: 45 * (*ifp->if_output)(ifp, m, dst, rt) 46 * Here m is the mbuf chain to be sent and dst is the destination address. 47 * The output routine encapsulates the supplied datagram if necessary, 48 * and then transmits it on its medium. 49 * 50 * On input, each interface unwraps the data received by it, and either 51 * places it on the input queue of an internetwork datagram routine 52 * and posts the associated software interrupt, or passes the datagram to a raw 53 * packet input routine. 54 * 55 * Routines exist for locating interfaces by their addresses 56 * or for locating an interface on a certain network, as well as more general 57 * routing and gateway routines maintaining information used to locate 58 * interfaces. These routines live in the files if.c and route.c 59 */ 60 61 struct rtentry; /* ifa_rtrequest */ 62 struct rt_addrinfo; /* ifa_rtrequest */ 63 struct socket; 64 struct carp_if; 65 struct carp_softc; 66 struct ifvlantrunk; 67 struct route; /* if_output */ 68 struct vnet; 69 struct ifmedia; 70 struct netmap_adapter; 71 72 #ifdef _KERNEL 73 #include <sys/mbuf.h> /* ifqueue only? */ 74 #include <sys/buf_ring.h> 75 #include <net/vnet.h> 76 #endif /* _KERNEL */ 77 #include <sys/counter.h> 78 #include <sys/lock.h> /* XXX */ 79 #include <sys/mutex.h> /* struct ifqueue */ 80 #include <sys/rwlock.h> /* XXX */ 81 #include <sys/sx.h> /* XXX */ 82 #include <sys/_task.h> /* if_link_task */ 83 84 #define IF_DUNIT_NONE -1 85 86 #include <altq/if_altq.h> 87 88 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 89 TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 90 TAILQ_HEAD(ifmultihead, ifmultiaddr); 91 TAILQ_HEAD(ifgrouphead, ifg_group); 92 93 #ifdef _KERNEL 94 VNET_DECLARE(struct pfil_head, link_pfil_hook); /* packet filter hooks */ 95 #define V_link_pfil_hook VNET(link_pfil_hook) 96 #endif /* _KERNEL */ 97 98 typedef enum { 99 IFCOUNTER_IPACKETS = 1, 100 IFCOUNTER_IERRORS, 101 IFCOUNTER_OPACKETS, 102 IFCOUNTER_OERRORS, 103 IFCOUNTER_COLLISIONS, 104 IFCOUNTER_IBYTES, 105 IFCOUNTER_OBYTES, 106 IFCOUNTER_IMCASTS, 107 IFCOUNTER_OMCASTS, 108 IFCOUNTER_IQDROPS, 109 IFCOUNTER_OQDROPS, 110 IFCOUNTER_NOPROTO, 111 } ift_counter; 112 113 typedef struct ifnet * if_t; 114 115 typedef void (*if_start_fn_t)(if_t); 116 typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 117 typedef void (*if_init_fn_t)(void *); 118 typedef void (*if_qflush_fn_t)(if_t); 119 typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 120 typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 121 122 struct ifnet_hw_tsomax { 123 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 124 u_int tsomaxsegcount; /* TSO maximum segment count */ 125 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 126 }; 127 128 /* 129 * Structure defining a network interface. 130 * 131 * Size ILP32: 592 (approx) 132 * LP64: 1048 (approx) 133 */ 134 struct ifnet { 135 /* General book keeping of interface lists. */ 136 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 137 LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 138 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 139 /* protected by if_addr_lock */ 140 u_char if_alloctype; /* if_type at time of allocation */ 141 142 /* Driver and protocol specific information that remains stable. */ 143 void *if_softc; /* pointer to driver state */ 144 void *if_llsoftc; /* link layer softc */ 145 void *if_l2com; /* pointer to protocol bits */ 146 const char *if_dname; /* driver name */ 147 int if_dunit; /* unit or IF_DUNIT_NONE */ 148 u_short if_index; /* numeric abbreviation for this if */ 149 short if_index_reserved; /* spare space to grow if_index */ 150 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 151 char *if_description; /* interface description */ 152 153 /* Variable fields that are touched by the stack and drivers. */ 154 int if_flags; /* up/down, broadcast, etc. */ 155 int if_drv_flags; /* driver-managed status flags */ 156 int if_capabilities; /* interface features & capabilities */ 157 int if_capenable; /* enabled features & capabilities */ 158 void *if_linkmib; /* link-type-specific MIB data */ 159 size_t if_linkmiblen; /* length of above data */ 160 u_int if_refcount; /* reference count */ 161 162 /* These fields are shared with struct if_data. */ 163 uint8_t if_type; /* ethernet, tokenring, etc */ 164 uint8_t if_addrlen; /* media address length */ 165 uint8_t if_hdrlen; /* media header length */ 166 uint8_t if_link_state; /* current link state */ 167 uint32_t if_mtu; /* maximum transmission unit */ 168 uint32_t if_metric; /* routing metric (external only) */ 169 uint64_t if_baudrate; /* linespeed */ 170 uint64_t if_hwassist; /* HW offload capabilities, see IFCAP */ 171 time_t if_epoch; /* uptime at attach or stat reset */ 172 struct timeval if_lastchange; /* time of last administrative change */ 173 174 struct ifaltq if_snd; /* output queue (includes altq) */ 175 struct task if_linktask; /* task for link change events */ 176 177 /* Addresses of different protocol families assigned to this if. */ 178 struct rwlock if_addr_lock; /* lock to protect address lists */ 179 /* 180 * if_addrhead is the list of all addresses associated to 181 * an interface. 182 * Some code in the kernel assumes that first element 183 * of the list has type AF_LINK, and contains sockaddr_dl 184 * addresses which store the link-level address and the name 185 * of the interface. 186 * However, access to the AF_LINK address through this 187 * field is deprecated. Use if_addr or ifaddr_byindex() instead. 188 */ 189 struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 190 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 191 int if_amcount; /* number of all-multicast requests */ 192 struct ifaddr *if_addr; /* pointer to link-level address */ 193 const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 194 struct rwlock if_afdata_lock; 195 void *if_afdata[AF_MAX]; 196 int if_afdata_initialized; 197 198 /* Additional features hung off the interface. */ 199 u_int if_fib; /* interface FIB */ 200 struct vnet *if_vnet; /* pointer to network stack instance */ 201 struct vnet *if_home_vnet; /* where this ifnet originates from */ 202 struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 203 struct bpf_if *if_bpf; /* packet filter structure */ 204 int if_pcount; /* number of promiscuous listeners */ 205 void *if_bridge; /* bridge glue */ 206 void *if_lagg; /* lagg glue */ 207 void *if_pf_kif; /* pf glue */ 208 struct carp_if *if_carp; /* carp interface structure */ 209 struct label *if_label; /* interface MAC label */ 210 struct netmap_adapter *if_netmap; /* netmap(4) softc */ 211 212 /* Various procedures of the layer2 encapsulation and drivers. */ 213 int (*if_output) /* output routine (enqueue) */ 214 (struct ifnet *, struct mbuf *, const struct sockaddr *, 215 struct route *); 216 void (*if_input) /* input routine (from h/w driver) */ 217 (struct ifnet *, struct mbuf *); 218 if_start_fn_t if_start; /* initiate output routine */ 219 if_ioctl_fn_t if_ioctl; /* ioctl routine */ 220 if_init_fn_t if_init; /* Init routine */ 221 int (*if_resolvemulti) /* validate/resolve multicast */ 222 (struct ifnet *, struct sockaddr **, struct sockaddr *); 223 if_qflush_fn_t if_qflush; /* flush any queue */ 224 if_transmit_fn_t if_transmit; /* initiate output routine */ 225 226 void (*if_reassign) /* reassign to vnet routine */ 227 (struct ifnet *, struct vnet *, char *); 228 if_get_counter_t if_get_counter; /* get counter values */ 229 230 /* Stuff that's only temporary and doesn't belong here. */ 231 u_int if_hw_tsomax; /* TSO total burst length 232 * limit in bytes. A value of 233 * zero means no limit. Have 234 * to find a better place for 235 * it eventually. */ 236 /* 237 * Old, racy and expensive statistics, should not be used in 238 * new drivers. 239 */ 240 uint64_t if_ipackets; /* packets received on interface */ 241 uint64_t if_ierrors; /* input errors on interface */ 242 uint64_t if_opackets; /* packets sent on interface */ 243 uint64_t if_oerrors; /* output errors on interface */ 244 uint64_t if_collisions; /* collisions on csma interfaces */ 245 uint64_t if_ibytes; /* total number of octets received */ 246 uint64_t if_obytes; /* total number of octets sent */ 247 uint64_t if_imcasts; /* packets received via multicast */ 248 uint64_t if_omcasts; /* packets sent via multicast */ 249 uint64_t if_iqdrops; /* dropped on input */ 250 uint64_t if_oqdrops; /* dropped on output */ 251 uint64_t if_noproto; /* destined for unsupported protocol */ 252 253 /* TSO fields for segment limits. If a field is zero below, there is no limit. */ 254 u_int if_hw_tsomaxsegcount; /* TSO maximum segment count */ 255 u_int if_hw_tsomaxsegsize; /* TSO maximum segment size in bytes */ 256 257 /* 258 * Spare fields to be added before branching a stable branch, so 259 * that structure can be enhanced without changing the kernel 260 * binary interface. 261 */ 262 }; 263 264 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 265 266 /* for compatibility with other BSDs */ 267 #define if_addrlist if_addrhead 268 #define if_list if_link 269 #define if_name(ifp) ((ifp)->if_xname) 270 271 /* 272 * Locks for address lists on the network interface. 273 */ 274 #define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock") 275 #define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock) 276 #define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock) 277 #define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock) 278 #define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock) 279 #define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock) 280 #define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED) 281 #define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED) 282 283 /* 284 * Function variations on locking macros intended to be used by loadable 285 * kernel modules in order to divorce them from the internals of address list 286 * locking. 287 */ 288 void if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 289 void if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 290 void if_maddr_rlock(if_t ifp); /* if_multiaddrs */ 291 void if_maddr_runlock(if_t ifp); /* if_multiaddrs */ 292 293 #ifdef _KERNEL 294 #ifdef _SYS_EVENTHANDLER_H_ 295 /* interface link layer address change event */ 296 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 297 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 298 /* interface address change event */ 299 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 300 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 301 /* new interface arrival event */ 302 typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 303 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 304 /* interface departure event */ 305 typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 306 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 307 /* Interface link state change event */ 308 typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 309 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 310 #endif /* _SYS_EVENTHANDLER_H_ */ 311 312 /* 313 * interface groups 314 */ 315 struct ifg_group { 316 char ifg_group[IFNAMSIZ]; 317 u_int ifg_refcnt; 318 void *ifg_pf_kif; 319 TAILQ_HEAD(, ifg_member) ifg_members; 320 TAILQ_ENTRY(ifg_group) ifg_next; 321 }; 322 323 struct ifg_member { 324 TAILQ_ENTRY(ifg_member) ifgm_next; 325 struct ifnet *ifgm_ifp; 326 }; 327 328 struct ifg_list { 329 struct ifg_group *ifgl_group; 330 TAILQ_ENTRY(ifg_list) ifgl_next; 331 }; 332 333 #ifdef _SYS_EVENTHANDLER_H_ 334 /* group attach event */ 335 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 336 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 337 /* group detach event */ 338 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 339 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 340 /* group change event */ 341 typedef void (*group_change_event_handler_t)(void *, const char *); 342 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 343 #endif /* _SYS_EVENTHANDLER_H_ */ 344 345 #define IF_AFDATA_LOCK_INIT(ifp) \ 346 rw_init(&(ifp)->if_afdata_lock, "if_afdata") 347 348 #define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 349 #define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 350 #define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 351 #define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 352 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 353 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 354 #define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 355 #define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 356 357 #define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 358 #define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) 359 #define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) 360 #define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 361 362 /* 363 * 72 was chosen below because it is the size of a TCP/IP 364 * header (40) + the minimum mss (32). 365 */ 366 #define IF_MINMTU 72 367 #define IF_MAXMTU 65535 368 369 #define TOEDEV(ifp) ((ifp)->if_llsoftc) 370 371 #endif /* _KERNEL */ 372 373 /* 374 * The ifaddr structure contains information about one address 375 * of an interface. They are maintained by the different address families, 376 * are allocated and attached when an address is set, and are linked 377 * together so all addresses for an interface can be located. 378 * 379 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 380 * chunk of malloc'ed memory, where we store the three addresses 381 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 382 */ 383 #if defined(_KERNEL) || defined(_WANT_IFADDR) 384 struct ifaddr { 385 struct sockaddr *ifa_addr; /* address of interface */ 386 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 387 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 388 struct sockaddr *ifa_netmask; /* used to determine subnet */ 389 struct ifnet *ifa_ifp; /* back-pointer to interface */ 390 struct carp_softc *ifa_carp; /* pointer to CARP data */ 391 TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 392 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 393 (int, struct rtentry *, struct rt_addrinfo *); 394 u_short ifa_flags; /* mostly rt_flags for cloning */ 395 u_int ifa_refcnt; /* references to this structure */ 396 397 counter_u64_t ifa_ipackets; 398 counter_u64_t ifa_opackets; 399 counter_u64_t ifa_ibytes; 400 counter_u64_t ifa_obytes; 401 }; 402 #endif 403 404 #ifdef _KERNEL 405 #define IFA_ROUTE RTF_UP /* route installed */ 406 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 407 408 /* For compatibility with other BSDs. SCTP uses it. */ 409 #define ifa_list ifa_link 410 411 struct ifaddr * ifa_alloc(size_t size, int flags); 412 void ifa_free(struct ifaddr *ifa); 413 void ifa_ref(struct ifaddr *ifa); 414 #endif /* _KERNEL */ 415 416 /* 417 * Multicast address structure. This is analogous to the ifaddr 418 * structure except that it keeps track of multicast addresses. 419 */ 420 struct ifmultiaddr { 421 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 422 struct sockaddr *ifma_addr; /* address this membership is for */ 423 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 424 struct ifnet *ifma_ifp; /* back-pointer to interface */ 425 u_int ifma_refcount; /* reference count */ 426 void *ifma_protospec; /* protocol-specific state, if any */ 427 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 428 }; 429 430 #ifdef _KERNEL 431 432 extern struct rwlock ifnet_rwlock; 433 extern struct sx ifnet_sxlock; 434 435 #define IFNET_LOCK_INIT() do { \ 436 rw_init_flags(&ifnet_rwlock, "ifnet_rw", RW_RECURSE); \ 437 sx_init_flags(&ifnet_sxlock, "ifnet_sx", SX_RECURSE); \ 438 } while(0) 439 440 #define IFNET_WLOCK() do { \ 441 sx_xlock(&ifnet_sxlock); \ 442 rw_wlock(&ifnet_rwlock); \ 443 } while (0) 444 445 #define IFNET_WUNLOCK() do { \ 446 rw_wunlock(&ifnet_rwlock); \ 447 sx_xunlock(&ifnet_sxlock); \ 448 } while (0) 449 450 /* 451 * To assert the ifnet lock, you must know not only whether it's for read or 452 * write, but also whether it was acquired with sleep support or not. 453 */ 454 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 455 #define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 456 #define IFNET_WLOCK_ASSERT() do { \ 457 sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 458 rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 459 } while (0) 460 461 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 462 #define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 463 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 464 #define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 465 466 /* 467 * Look up an ifnet given its index; the _ref variant also acquires a 468 * reference that must be freed using if_rele(). It is almost always a bug 469 * to call ifnet_byindex() instead if ifnet_byindex_ref(). 470 */ 471 struct ifnet *ifnet_byindex(u_short idx); 472 struct ifnet *ifnet_byindex_locked(u_short idx); 473 struct ifnet *ifnet_byindex_ref(u_short idx); 474 475 /* 476 * Given the index, ifaddr_byindex() returns the one and only 477 * link-level ifaddr for the interface. You are not supposed to use 478 * it to traverse the list of addresses associated to the interface. 479 */ 480 struct ifaddr *ifaddr_byindex(u_short idx); 481 482 VNET_DECLARE(struct ifnethead, ifnet); 483 VNET_DECLARE(struct ifgrouphead, ifg_head); 484 VNET_DECLARE(int, if_index); 485 VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 486 487 #define V_ifnet VNET(ifnet) 488 #define V_ifg_head VNET(ifg_head) 489 #define V_if_index VNET(if_index) 490 #define V_loif VNET(loif) 491 492 int if_addgroup(struct ifnet *, const char *); 493 int if_delgroup(struct ifnet *, const char *); 494 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 495 int if_allmulti(struct ifnet *, int); 496 struct ifnet* if_alloc(u_char); 497 void if_attach(struct ifnet *); 498 void if_dead(struct ifnet *); 499 int if_delmulti(struct ifnet *, struct sockaddr *); 500 void if_delmulti_ifma(struct ifmultiaddr *); 501 void if_detach(struct ifnet *); 502 void if_vmove(struct ifnet *, struct vnet *); 503 void if_purgeaddrs(struct ifnet *); 504 void if_delallmulti(struct ifnet *); 505 void if_down(struct ifnet *); 506 struct ifmultiaddr * 507 if_findmulti(struct ifnet *, struct sockaddr *); 508 void if_free(struct ifnet *); 509 void if_initname(struct ifnet *, const char *, int); 510 void if_link_state_change(struct ifnet *, int); 511 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 512 void if_ref(struct ifnet *); 513 void if_rele(struct ifnet *); 514 int if_setlladdr(struct ifnet *, const u_char *, int); 515 void if_up(struct ifnet *); 516 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 517 int ifpromisc(struct ifnet *, int); 518 struct ifnet *ifunit(const char *); 519 struct ifnet *ifunit_ref(const char *); 520 521 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 522 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 523 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *, int fib); 524 525 struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 526 int ifa_ifwithaddr_check(struct sockaddr *); 527 struct ifaddr *ifa_ifwithbroadaddr(struct sockaddr *, int); 528 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *, int); 529 struct ifaddr *ifa_ifwithnet(struct sockaddr *, int, int); 530 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *, u_int); 531 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 532 int ifa_preferred(struct ifaddr *, struct ifaddr *); 533 534 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 535 536 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 537 typedef void if_com_free_t(void *com, u_char type); 538 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 539 void if_deregister_com_alloc(u_char type); 540 void if_data_copy(struct ifnet *, struct if_data *); 541 uint64_t if_get_counter_default(struct ifnet *, ift_counter); 542 void if_inc_counter(struct ifnet *, ift_counter, int64_t); 543 544 #define IF_LLADDR(ifp) \ 545 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 546 547 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 548 uint64_t if_getbaudrate(if_t ifp); 549 int if_setcapabilities(if_t ifp, int capabilities); 550 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 551 int if_getcapabilities(if_t ifp); 552 int if_togglecapenable(if_t ifp, int togglecap); 553 int if_setcapenable(if_t ifp, int capenable); 554 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 555 int if_getcapenable(if_t ifp); 556 const char *if_getdname(if_t ifp); 557 int if_setdev(if_t ifp, void *dev); 558 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 559 int if_getdrvflags(if_t ifp); 560 int if_setdrvflags(if_t ifp, int flags); 561 int if_clearhwassist(if_t ifp); 562 int if_sethwassistbits(if_t ifp, int toset, int toclear); 563 int if_sethwassist(if_t ifp, int hwassist_bit); 564 int if_gethwassist(if_t ifp); 565 int if_setsoftc(if_t ifp, void *softc); 566 void *if_getsoftc(if_t ifp); 567 int if_setflags(if_t ifp, int flags); 568 int if_setmtu(if_t ifp, int mtu); 569 int if_getmtu(if_t ifp); 570 int if_setflagbits(if_t ifp, int set, int clear); 571 int if_getflags(if_t ifp); 572 int if_sendq_empty(if_t ifp); 573 int if_setsendqready(if_t ifp); 574 int if_setsendqlen(if_t ifp, int tx_desc_count); 575 int if_input(if_t ifp, struct mbuf* sendmp); 576 int if_sendq_prepend(if_t ifp, struct mbuf *m); 577 struct mbuf *if_dequeue(if_t ifp); 578 int if_setifheaderlen(if_t ifp, int len); 579 void if_setrcvif(struct mbuf *m, if_t ifp); 580 void if_setvtag(struct mbuf *m, u_int16_t tag); 581 u_int16_t if_getvtag(struct mbuf *m); 582 int if_vlantrunkinuse(if_t ifp); 583 caddr_t if_getlladdr(if_t ifp); 584 void *if_gethandle(u_char); 585 void if_bpfmtap(if_t ifp, struct mbuf *m); 586 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 587 void if_vlancap(if_t ifp); 588 589 int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max); 590 int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max); 591 int if_multiaddr_count(if_t ifp, int max); 592 593 int if_getamcount(if_t ifp); 594 struct ifaddr * if_getifaddr(if_t ifp); 595 596 /* Functions */ 597 void if_setinitfn(if_t ifp, void (*)(void *)); 598 void if_setioctlfn(if_t ifp, int (*)(if_t, u_long, caddr_t)); 599 void if_setstartfn(if_t ifp, void (*)(if_t)); 600 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 601 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 602 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 603 604 /* Revisit the below. These are inline functions originally */ 605 int drbr_inuse_drv(if_t ifp, struct buf_ring *br); 606 struct mbuf* drbr_dequeue_drv(if_t ifp, struct buf_ring *br); 607 int drbr_needs_enqueue_drv(if_t ifp, struct buf_ring *br); 608 int drbr_enqueue_drv(if_t ifp, struct buf_ring *br, struct mbuf *m); 609 610 /* TSO */ 611 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 612 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 613 614 #endif /* _KERNEL */ 615 #endif /* !_NET_IF_VAR_H_ */ 616