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 71 #ifdef _KERNEL 72 #include <sys/mbuf.h> /* ifqueue only? */ 73 #include <sys/buf_ring.h> 74 #include <net/vnet.h> 75 #endif /* _KERNEL */ 76 #include <sys/counter.h> 77 #include <sys/lock.h> /* XXX */ 78 #include <sys/mutex.h> /* struct ifqueue */ 79 #include <sys/rwlock.h> /* XXX */ 80 #include <sys/sx.h> /* XXX */ 81 #include <sys/_task.h> /* if_link_task */ 82 83 #define IF_DUNIT_NONE -1 84 85 #include <altq/if_altq.h> 86 87 TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 88 TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 89 TAILQ_HEAD(ifmultihead, ifmultiaddr); 90 TAILQ_HEAD(ifgrouphead, ifg_group); 91 92 #ifdef _KERNEL 93 VNET_DECLARE(struct pfil_head, link_pfil_hook); /* packet filter hooks */ 94 #define V_link_pfil_hook VNET(link_pfil_hook) 95 #endif /* _KERNEL */ 96 97 typedef void (*if_start_fn_t)(struct ifnet *); 98 typedef int (*if_ioctl_fn_t)(struct ifnet *, u_long, caddr_t); 99 typedef void (*if_init_fn_t)(void *); 100 typedef void (*if_qflush_fn_t)(struct ifnet *); 101 typedef int (*if_transmit_fn_t)(struct ifnet *, struct mbuf *); 102 103 /* Opaque object pointing to interface structure (ifnet) */ 104 typedef void *if_t; 105 106 /* 107 * Structure defining a network interface. 108 * 109 * Size ILP32: 592 (approx) 110 * LP64: 1048 (approx) 111 */ 112 struct ifnet { 113 /* General book keeping of interface lists. */ 114 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 115 LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 116 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 117 /* protected by if_addr_lock */ 118 u_char if_alloctype; /* if_type at time of allocation */ 119 120 /* Driver and protocol specific information that remains stable. */ 121 void *if_softc; /* pointer to driver state */ 122 void *if_llsoftc; /* link layer softc */ 123 void *if_l2com; /* pointer to protocol bits */ 124 const char *if_dname; /* driver name */ 125 int if_dunit; /* unit or IF_DUNIT_NONE */ 126 u_short if_index; /* numeric abbreviation for this if */ 127 short if_index_reserved; /* spare space to grow if_index */ 128 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 129 char *if_description; /* interface description */ 130 131 /* Variable fields that are touched by the stack and drivers. */ 132 int if_flags; /* up/down, broadcast, etc. */ 133 int if_capabilities; /* interface features & capabilities */ 134 int if_capenable; /* enabled features & capabilities */ 135 void *if_linkmib; /* link-type-specific MIB data */ 136 size_t if_linkmiblen; /* length of above data */ 137 int if_drv_flags; /* driver-managed status flags */ 138 u_int if_refcount; /* reference count */ 139 struct ifaltq if_snd; /* output queue (includes altq) */ 140 struct if_data if_data; /* type information and statistics */ 141 struct task if_linktask; /* task for link change events */ 142 143 /* Addresses of different protocol families assigned to this if. */ 144 struct rwlock if_addr_lock; /* lock to protect address lists */ 145 /* 146 * if_addrhead is the list of all addresses associated to 147 * an interface. 148 * Some code in the kernel assumes that first element 149 * of the list has type AF_LINK, and contains sockaddr_dl 150 * addresses which store the link-level address and the name 151 * of the interface. 152 * However, access to the AF_LINK address through this 153 * field is deprecated. Use if_addr or ifaddr_byindex() instead. 154 */ 155 struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 156 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 157 int if_amcount; /* number of all-multicast requests */ 158 struct ifaddr *if_addr; /* pointer to link-level address */ 159 const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 160 struct rwlock if_afdata_lock; 161 void *if_afdata[AF_MAX]; 162 int if_afdata_initialized; 163 164 /* Additional features hung off the interface. */ 165 u_int if_fib; /* interface FIB */ 166 struct vnet *if_vnet; /* pointer to network stack instance */ 167 struct vnet *if_home_vnet; /* where this ifnet originates from */ 168 struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 169 struct bpf_if *if_bpf; /* packet filter structure */ 170 int if_pcount; /* number of promiscuous listeners */ 171 void *if_bridge; /* bridge glue */ 172 void *if_lagg; /* lagg glue */ 173 void *if_pf_kif; /* pf glue */ 174 struct carp_if *if_carp; /* carp interface structure */ 175 struct label *if_label; /* interface MAC label */ 176 177 /* Various procedures of the layer2 encapsulation and drivers. */ 178 int (*if_output) /* output routine (enqueue) */ 179 (struct ifnet *, struct mbuf *, const struct sockaddr *, 180 struct route *); 181 void (*if_input) /* input routine (from h/w driver) */ 182 (struct ifnet *, struct mbuf *); 183 if_start_fn_t if_start; /* initiate output routine */ 184 if_ioctl_fn_t if_ioctl; /* ioctl routine */ 185 if_init_fn_t if_init; /* Init routine */ 186 int (*if_resolvemulti) /* validate/resolve multicast */ 187 (struct ifnet *, struct sockaddr **, struct sockaddr *); 188 if_qflush_fn_t if_qflush; /* flush any queue */ 189 if_transmit_fn_t if_transmit; /* initiate output routine */ 190 191 void (*if_reassign) /* reassign to vnet routine */ 192 (struct ifnet *, struct vnet *, char *); 193 194 /* Stuff that's only temporary and doesn't belong here. */ 195 u_int if_hw_tsomax; /* tso burst length limit, the minimum 196 * is (IP_MAXPACKET / 8). 197 * XXXAO: Have to find a better place 198 * for it eventually. */ 199 /* 200 * Spare fields are added so that we can modify sensitive data 201 * structures without changing the kernel binary interface, and must 202 * be used with care where binary compatibility is required. 203 */ 204 char if_cspare[3]; 205 int if_ispare[4]; 206 void *if_unused[2]; 207 void *if_pspare[8]; /* 1 netmap, 7 TDB */ 208 }; 209 210 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 211 212 /* 213 * XXX These aliases are terribly dangerous because they could apply 214 * to anything. 215 */ 216 #define if_mtu if_data.ifi_mtu 217 #define if_type if_data.ifi_type 218 #define if_physical if_data.ifi_physical 219 #define if_addrlen if_data.ifi_addrlen 220 #define if_hdrlen if_data.ifi_hdrlen 221 #define if_metric if_data.ifi_metric 222 #define if_link_state if_data.ifi_link_state 223 #define if_baudrate if_data.ifi_baudrate 224 #define if_hwassist if_data.ifi_hwassist 225 #define if_ipackets if_data.ifi_ipackets 226 #define if_ierrors if_data.ifi_ierrors 227 #define if_opackets if_data.ifi_opackets 228 #define if_oerrors if_data.ifi_oerrors 229 #define if_collisions if_data.ifi_collisions 230 #define if_ibytes if_data.ifi_ibytes 231 #define if_obytes if_data.ifi_obytes 232 #define if_imcasts if_data.ifi_imcasts 233 #define if_omcasts if_data.ifi_omcasts 234 #define if_iqdrops if_data.ifi_iqdrops 235 #define if_oqdrops if_data.ifi_oqdrops 236 #define if_noproto if_data.ifi_noproto 237 #define if_lastchange if_data.ifi_lastchange 238 239 /* for compatibility with other BSDs */ 240 #define if_addrlist if_addrhead 241 #define if_list if_link 242 #define if_name(ifp) ((ifp)->if_xname) 243 244 /* 245 * Locks for address lists on the network interface. 246 */ 247 #define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock") 248 #define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock) 249 #define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock) 250 #define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock) 251 #define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock) 252 #define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock) 253 #define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED) 254 #define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED) 255 256 /* 257 * Function variations on locking macros intended to be used by loadable 258 * kernel modules in order to divorce them from the internals of address list 259 * locking. 260 */ 261 void if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 262 void if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 263 void if_maddr_rlock(if_t ifp); /* if_multiaddrs */ 264 void if_maddr_runlock(if_t ifp); /* if_multiaddrs */ 265 266 #ifdef _KERNEL 267 #ifdef _SYS_EVENTHANDLER_H_ 268 /* interface link layer address change event */ 269 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 270 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 271 /* interface address change event */ 272 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 273 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 274 /* new interface arrival event */ 275 typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 276 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 277 /* interface departure event */ 278 typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 279 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 280 /* Interface link state change event */ 281 typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 282 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 283 #endif /* _SYS_EVENTHANDLER_H_ */ 284 285 /* 286 * interface groups 287 */ 288 struct ifg_group { 289 char ifg_group[IFNAMSIZ]; 290 u_int ifg_refcnt; 291 void *ifg_pf_kif; 292 TAILQ_HEAD(, ifg_member) ifg_members; 293 TAILQ_ENTRY(ifg_group) ifg_next; 294 }; 295 296 struct ifg_member { 297 TAILQ_ENTRY(ifg_member) ifgm_next; 298 struct ifnet *ifgm_ifp; 299 }; 300 301 struct ifg_list { 302 struct ifg_group *ifgl_group; 303 TAILQ_ENTRY(ifg_list) ifgl_next; 304 }; 305 306 #ifdef _SYS_EVENTHANDLER_H_ 307 /* group attach event */ 308 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 309 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 310 /* group detach event */ 311 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 312 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 313 /* group change event */ 314 typedef void (*group_change_event_handler_t)(void *, const char *); 315 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 316 #endif /* _SYS_EVENTHANDLER_H_ */ 317 318 #define IF_AFDATA_LOCK_INIT(ifp) \ 319 rw_init(&(ifp)->if_afdata_lock, "if_afdata") 320 321 #define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 322 #define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 323 #define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 324 #define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 325 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 326 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 327 #define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 328 #define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 329 330 #define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 331 #define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) 332 #define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) 333 #define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 334 335 /* 336 * 72 was chosen below because it is the size of a TCP/IP 337 * header (40) + the minimum mss (32). 338 */ 339 #define IF_MINMTU 72 340 #define IF_MAXMTU 65535 341 342 #define TOEDEV(ifp) ((ifp)->if_llsoftc) 343 344 #endif /* _KERNEL */ 345 346 /* 347 * The ifaddr structure contains information about one address 348 * of an interface. They are maintained by the different address families, 349 * are allocated and attached when an address is set, and are linked 350 * together so all addresses for an interface can be located. 351 * 352 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 353 * chunk of malloc'ed memory, where we store the three addresses 354 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 355 */ 356 #if defined(_KERNEL) || defined(_WANT_IFADDR) 357 struct ifaddr { 358 struct sockaddr *ifa_addr; /* address of interface */ 359 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 360 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 361 struct sockaddr *ifa_netmask; /* used to determine subnet */ 362 struct ifnet *ifa_ifp; /* back-pointer to interface */ 363 struct carp_softc *ifa_carp; /* pointer to CARP data */ 364 TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 365 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 366 (int, struct rtentry *, struct rt_addrinfo *); 367 u_short ifa_flags; /* mostly rt_flags for cloning */ 368 u_int ifa_refcnt; /* references to this structure */ 369 int ifa_metric; /* cost of going out this interface */ 370 int (*ifa_claim_addr) /* check if an addr goes to this if */ 371 (struct ifaddr *, struct sockaddr *); 372 373 counter_u64_t ifa_ipackets; 374 counter_u64_t ifa_opackets; 375 counter_u64_t ifa_ibytes; 376 counter_u64_t ifa_obytes; 377 }; 378 #endif 379 380 #ifdef _KERNEL 381 #define IFA_ROUTE RTF_UP /* route installed */ 382 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 383 384 /* For compatibility with other BSDs. SCTP uses it. */ 385 #define ifa_list ifa_link 386 387 struct ifaddr * ifa_alloc(size_t size, int flags); 388 void ifa_free(struct ifaddr *ifa); 389 void ifa_ref(struct ifaddr *ifa); 390 #endif /* _KERNEL */ 391 392 /* 393 * Multicast address structure. This is analogous to the ifaddr 394 * structure except that it keeps track of multicast addresses. 395 */ 396 struct ifmultiaddr { 397 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 398 struct sockaddr *ifma_addr; /* address this membership is for */ 399 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 400 struct ifnet *ifma_ifp; /* back-pointer to interface */ 401 u_int ifma_refcount; /* reference count */ 402 void *ifma_protospec; /* protocol-specific state, if any */ 403 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 404 }; 405 406 #ifdef _KERNEL 407 408 extern struct rwlock ifnet_rwlock; 409 extern struct sx ifnet_sxlock; 410 411 #define IFNET_LOCK_INIT() do { \ 412 rw_init_flags(&ifnet_rwlock, "ifnet_rw", RW_RECURSE); \ 413 sx_init_flags(&ifnet_sxlock, "ifnet_sx", SX_RECURSE); \ 414 } while(0) 415 416 #define IFNET_WLOCK() do { \ 417 sx_xlock(&ifnet_sxlock); \ 418 rw_wlock(&ifnet_rwlock); \ 419 } while (0) 420 421 #define IFNET_WUNLOCK() do { \ 422 rw_wunlock(&ifnet_rwlock); \ 423 sx_xunlock(&ifnet_sxlock); \ 424 } while (0) 425 426 /* 427 * To assert the ifnet lock, you must know not only whether it's for read or 428 * write, but also whether it was acquired with sleep support or not. 429 */ 430 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 431 #define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 432 #define IFNET_WLOCK_ASSERT() do { \ 433 sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 434 rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 435 } while (0) 436 437 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 438 #define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 439 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 440 #define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 441 442 /* 443 * Look up an ifnet given its index; the _ref variant also acquires a 444 * reference that must be freed using if_rele(). It is almost always a bug 445 * to call ifnet_byindex() instead if ifnet_byindex_ref(). 446 */ 447 struct ifnet *ifnet_byindex(u_short idx); 448 struct ifnet *ifnet_byindex_locked(u_short idx); 449 struct ifnet *ifnet_byindex_ref(u_short idx); 450 451 /* 452 * Given the index, ifaddr_byindex() returns the one and only 453 * link-level ifaddr for the interface. You are not supposed to use 454 * it to traverse the list of addresses associated to the interface. 455 */ 456 struct ifaddr *ifaddr_byindex(u_short idx); 457 458 VNET_DECLARE(struct ifnethead, ifnet); 459 VNET_DECLARE(struct ifgrouphead, ifg_head); 460 VNET_DECLARE(int, if_index); 461 VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 462 463 #define V_ifnet VNET(ifnet) 464 #define V_ifg_head VNET(ifg_head) 465 #define V_if_index VNET(if_index) 466 #define V_loif VNET(loif) 467 468 int if_addgroup(struct ifnet *, const char *); 469 int if_delgroup(struct ifnet *, const char *); 470 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 471 int if_allmulti(struct ifnet *, int); 472 struct ifnet* if_alloc(u_char); 473 void if_attach(struct ifnet *); 474 void if_dead(struct ifnet *); 475 int if_delmulti(struct ifnet *, struct sockaddr *); 476 void if_delmulti_ifma(struct ifmultiaddr *); 477 void if_detach(struct ifnet *); 478 void if_vmove(struct ifnet *, struct vnet *); 479 void if_purgeaddrs(struct ifnet *); 480 void if_delallmulti(struct ifnet *); 481 void if_down(struct ifnet *); 482 struct ifmultiaddr * 483 if_findmulti(struct ifnet *, struct sockaddr *); 484 void if_free(struct ifnet *); 485 void if_initname(struct ifnet *, const char *, int); 486 void if_link_state_change(struct ifnet *, int); 487 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 488 void if_ref(struct ifnet *); 489 void if_rele(struct ifnet *); 490 int if_setlladdr(struct ifnet *, const u_char *, int); 491 void if_up(struct ifnet *); 492 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 493 int ifpromisc(struct ifnet *, int); 494 struct ifnet *ifunit(const char *); 495 struct ifnet *ifunit_ref(const char *); 496 497 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 498 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 499 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *, int fib); 500 501 struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 502 int ifa_ifwithaddr_check(struct sockaddr *); 503 struct ifaddr *ifa_ifwithbroadaddr(struct sockaddr *); 504 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 505 struct ifaddr *ifa_ifwithdstaddr_fib(struct sockaddr *, int); 506 struct ifaddr *ifa_ifwithnet(struct sockaddr *, int); 507 struct ifaddr *ifa_ifwithnet_fib(struct sockaddr *, int, int); 508 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 509 struct ifaddr *ifa_ifwithroute_fib(int, struct sockaddr *, struct sockaddr *, u_int); 510 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 511 int ifa_preferred(struct ifaddr *, struct ifaddr *); 512 513 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 514 515 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 516 typedef void if_com_free_t(void *com, u_char type); 517 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 518 void if_deregister_com_alloc(u_char type); 519 520 #define IF_LLADDR(ifp) \ 521 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 522 523 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 524 uint64_t if_getbaudrate(if_t ifp); 525 int if_setcapabilities(if_t ifp, int capabilities); 526 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 527 int if_getcapabilities(if_t ifp); 528 int if_togglecapenable(if_t ifp, int togglecap); 529 int if_setcapenable(if_t ifp, int capenable); 530 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 531 int if_getcapenable(if_t ifp); 532 const char *if_getdname(if_t ifp); 533 int if_setdev(if_t ifp, void *dev); 534 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 535 int if_getdrvflags(if_t ifp); 536 int if_setdrvflags(if_t ifp, int flags); 537 int if_clearhwassist(if_t ifp); 538 int if_sethwassistbits(if_t ifp, int toset, int toclear); 539 int if_sethwassist(if_t ifp, int hwassist_bit); 540 int if_gethwassist(if_t ifp); 541 int if_setsoftc(if_t ifp, void *softc); 542 void *if_getsoftc(if_t ifp); 543 int if_setflags(if_t ifp, int flags); 544 int if_setmtu(if_t ifp, int mtu); 545 int if_getmtu(if_t ifp); 546 int if_setflagbits(if_t ifp, int set, int clear); 547 int if_getflags(if_t ifp); 548 int if_sendq_empty(if_t ifp); 549 int if_setsendqready(if_t ifp); 550 int if_setsendqlen(if_t ifp, int tx_desc_count); 551 int if_input(if_t ifp, struct mbuf* sendmp); 552 int if_sendq_prepend(if_t ifp, struct mbuf *m); 553 struct mbuf *if_dequeue(if_t ifp); 554 int if_setifheaderlen(if_t ifp, int len); 555 void if_setrcvif(struct mbuf *m, if_t ifp); 556 void if_setvtag(struct mbuf *m, u_int16_t tag); 557 u_int16_t if_getvtag(struct mbuf *m); 558 int if_vlantrunkinuse(if_t ifp); 559 caddr_t if_getlladdr(if_t ifp); 560 void *if_gethandle(u_char); 561 void if_bpfmtap(if_t ifp, struct mbuf *m); 562 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 563 void if_vlancap(if_t ifp); 564 565 int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max); 566 int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max); 567 int if_multiaddr_count(if_t ifp, int max); 568 569 int if_getamcount(if_t ifp); 570 struct ifaddr * if_getifaddr(if_t ifp); 571 /* Shim for drivers using drvapi */ 572 int ifmedia_ioctl_drv(if_t ifp, struct ifreq *ifr, struct ifmedia *ifm, 573 u_long cmd); 574 575 /* Statistics */ 576 577 int if_incipackets(if_t ifp, int pkt); 578 int if_incopackets(if_t ifp, int pkts); 579 int if_incierrors(if_t ifp, int ierrors); 580 int if_incoerrors(if_t ifp, int oerrors); 581 int if_inciqdrops(if_t ifp, int val); 582 int if_setierrors(if_t ifp, int ierrors); 583 int if_setoerrors(if_t ifp, int oerrors); 584 int if_setcollisions(if_t ifp, int collisions); 585 int if_inccollisions(if_t ifp, int collisions); 586 int if_incobytes(if_t ifp, int bytes); 587 int if_getiqdrops(if_t ifp); 588 int if_incimcasts(if_t ifp, int imcasts); 589 int if_incomcasts(if_t ifp, int imcasts); 590 int if_setipackets(if_t ifp, int pkts); 591 int if_setopackets(if_t ifp, int pkts); 592 int if_setibytes(if_t ifp, int bytes); 593 int if_setobytes(if_t ifp, int bytes); 594 int if_setimcasts(if_t ifp, int pkts); 595 596 /* Functions */ 597 void if_setinitfn(if_t ifp, void (*)(void *)); 598 void if_setioctlfn(if_t ifp, int (*)(void *, u_long, caddr_t)); 599 void if_setstartfn(if_t ifp, void (*)(void *)); 600 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 601 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 602 603 604 /* Shim functions till all drivers use drvapi */ 605 void arp_ifinit_drv(if_t ifp, struct ifaddr *ifa); 606 void ether_ifattach_drv(if_t ifp, const u_int8_t *lla); 607 void ether_ifdetach_drv(if_t ifp); 608 int ether_ioctl_drv(if_t ifp, u_long cmd, caddr_t data); 609 void if_free_drv(if_t ifp); 610 void if_initname_drv(if_t ifp, const char *name, int unit); 611 void if_linkstate_change_drv(if_t ifp, int link_state); 612 613 struct ifmedia; 614 void ifmedia_init_drv(struct ifmedia *, int, int (*)(void *), 615 void (*)(void *, struct ifmediareq *)); 616 617 void if_addr_rlock_drv(if_t ifp); 618 void if_addr_runlock_drv(if_t ifp); 619 void if_qflush_drv(if_t ifp); 620 621 /* Revisit the below. These are inline functions originally */ 622 int drbr_inuse_drv(if_t ifp, struct buf_ring *br); 623 struct mbuf* drbr_dequeue_drv(if_t ifp, struct buf_ring *br); 624 int drbr_needs_enqueue_drv(if_t ifp, struct buf_ring *br); 625 int drbr_enqueue_drv(if_t ifp, struct buf_ring *br, struct mbuf *m); 626 627 #endif /* _KERNEL */ 628 #endif /* !_NET_IF_VAR_H_ */ 629