if_var.h revision 287775
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: head/sys/net/if_var.h 287775 2015-09-14 08:36:22Z hselasky $ 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 61struct rtentry; /* ifa_rtrequest */ 62struct rt_addrinfo; /* ifa_rtrequest */ 63struct socket; 64struct carp_if; 65struct carp_softc; 66struct ifvlantrunk; 67struct route; /* if_output */ 68struct vnet; 69struct ifmedia; 70struct 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 <net/altq/if_altq.h> 87 88TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 89TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 90TAILQ_HEAD(ifmultihead, ifmultiaddr); 91TAILQ_HEAD(ifgrouphead, ifg_group); 92 93#ifdef _KERNEL 94VNET_DECLARE(struct pfil_head, link_pfil_hook); /* packet filter hooks */ 95#define V_link_pfil_hook VNET(link_pfil_hook) 96#endif /* _KERNEL */ 97 98typedef enum { 99 IFCOUNTER_IPACKETS = 0, 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 IFCOUNTERS /* Array size. */ 112} ift_counter; 113 114typedef struct ifnet * if_t; 115 116typedef void (*if_start_fn_t)(if_t); 117typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 118typedef void (*if_init_fn_t)(void *); 119typedef void (*if_qflush_fn_t)(if_t); 120typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 121typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 122 123struct ifnet_hw_tsomax { 124 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 125 u_int tsomaxsegcount; /* TSO maximum segment count */ 126 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 127}; 128 129/* 130 * Structure defining a network interface. 131 * 132 * Size ILP32: 592 (approx) 133 * LP64: 1048 (approx) 134 */ 135struct ifnet { 136 /* General book keeping of interface lists. */ 137 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 138 LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 139 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 140 /* protected by if_addr_lock */ 141 u_char if_alloctype; /* if_type at time of allocation */ 142 143 /* Driver and protocol specific information that remains stable. */ 144 void *if_softc; /* pointer to driver state */ 145 void *if_llsoftc; /* link layer softc */ 146 void *if_l2com; /* pointer to protocol bits */ 147 const char *if_dname; /* driver name */ 148 int if_dunit; /* unit or IF_DUNIT_NONE */ 149 u_short if_index; /* numeric abbreviation for this if */ 150 short if_index_reserved; /* spare space to grow if_index */ 151 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 152 char *if_description; /* interface description */ 153 154 /* Variable fields that are touched by the stack and drivers. */ 155 int if_flags; /* up/down, broadcast, etc. */ 156 int if_drv_flags; /* driver-managed status flags */ 157 int if_capabilities; /* interface features & capabilities */ 158 int if_capenable; /* enabled features & capabilities */ 159 void *if_linkmib; /* link-type-specific MIB data */ 160 size_t if_linkmiblen; /* length of above data */ 161 u_int if_refcount; /* reference count */ 162 163 /* These fields are shared with struct if_data. */ 164 uint8_t if_type; /* ethernet, tokenring, etc */ 165 uint8_t if_addrlen; /* media address length */ 166 uint8_t if_hdrlen; /* media header length */ 167 uint8_t if_link_state; /* current link state */ 168 uint32_t if_mtu; /* maximum transmission unit */ 169 uint32_t if_metric; /* routing metric (external only) */ 170 uint64_t if_baudrate; /* linespeed */ 171 uint64_t if_hwassist; /* HW offload capabilities, see IFCAP */ 172 time_t if_epoch; /* uptime at attach or stat reset */ 173 struct timeval if_lastchange; /* time of last administrative change */ 174 175 struct ifaltq if_snd; /* output queue (includes altq) */ 176 struct task if_linktask; /* task for link change events */ 177 178 /* Addresses of different protocol families assigned to this if. */ 179 struct rwlock if_addr_lock; /* lock to protect address lists */ 180 /* 181 * if_addrhead is the list of all addresses associated to 182 * an interface. 183 * Some code in the kernel assumes that first element 184 * of the list has type AF_LINK, and contains sockaddr_dl 185 * addresses which store the link-level address and the name 186 * of the interface. 187 * However, access to the AF_LINK address through this 188 * field is deprecated. Use if_addr or ifaddr_byindex() instead. 189 */ 190 struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 191 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 192 int if_amcount; /* number of all-multicast requests */ 193 struct ifaddr *if_addr; /* pointer to link-level address */ 194 const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 195 struct rwlock if_afdata_lock; 196 void *if_afdata[AF_MAX]; 197 int if_afdata_initialized; 198 199 /* Additional features hung off the interface. */ 200 u_int if_fib; /* interface FIB */ 201 struct vnet *if_vnet; /* pointer to network stack instance */ 202 struct vnet *if_home_vnet; /* where this ifnet originates from */ 203 struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 204 struct bpf_if *if_bpf; /* packet filter structure */ 205 int if_pcount; /* number of promiscuous listeners */ 206 void *if_bridge; /* bridge glue */ 207 void *if_lagg; /* lagg glue */ 208 void *if_pf_kif; /* pf glue */ 209 struct carp_if *if_carp; /* carp interface structure */ 210 struct label *if_label; /* interface MAC label */ 211 struct netmap_adapter *if_netmap; /* netmap(4) softc */ 212 213 /* Various procedures of the layer2 encapsulation and drivers. */ 214 int (*if_output) /* output routine (enqueue) */ 215 (struct ifnet *, struct mbuf *, const struct sockaddr *, 216 struct route *); 217 void (*if_input) /* input routine (from h/w driver) */ 218 (struct ifnet *, struct mbuf *); 219 if_start_fn_t if_start; /* initiate output routine */ 220 if_ioctl_fn_t if_ioctl; /* ioctl routine */ 221 if_init_fn_t if_init; /* Init routine */ 222 int (*if_resolvemulti) /* validate/resolve multicast */ 223 (struct ifnet *, struct sockaddr **, struct sockaddr *); 224 if_qflush_fn_t if_qflush; /* flush any queue */ 225 if_transmit_fn_t if_transmit; /* initiate output routine */ 226 227 void (*if_reassign) /* reassign to vnet routine */ 228 (struct ifnet *, struct vnet *, char *); 229 if_get_counter_t if_get_counter; /* get counter values */ 230 231 /* Statistics. */ 232 counter_u64_t if_counters[IFCOUNTERS]; 233 234 /* Stuff that's only temporary and doesn't belong here. */ 235 236 /* 237 * Network adapter TSO limits: 238 * =========================== 239 * 240 * If the "if_hw_tsomax" field is zero the maximum segment 241 * length limit does not apply. If the "if_hw_tsomaxsegcount" 242 * or the "if_hw_tsomaxsegsize" field is zero the TSO segment 243 * count limit does not apply. If all three fields are zero, 244 * there is no TSO limit. 245 * 246 * NOTE: The TSO limits should reflect the values used in the 247 * BUSDMA tag a network adapter is using to load a mbuf chain 248 * for transmission. The TCP/IP network stack will subtract 249 * space for all linklevel and protocol level headers and 250 * ensure that the full mbuf chain passed to the network 251 * adapter fits within the given limits. 252 */ 253 u_int if_hw_tsomax; /* TSO maximum size in bytes */ 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/* for compatibility with other BSDs */ 265#define if_addrlist if_addrhead 266#define if_list if_link 267#define if_name(ifp) ((ifp)->if_xname) 268 269/* 270 * Locks for address lists on the network interface. 271 */ 272#define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock") 273#define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock) 274#define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock) 275#define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock) 276#define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock) 277#define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock) 278#define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED) 279#define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED) 280 281/* 282 * Function variations on locking macros intended to be used by loadable 283 * kernel modules in order to divorce them from the internals of address list 284 * locking. 285 */ 286void if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 287void if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 288void if_maddr_rlock(if_t ifp); /* if_multiaddrs */ 289void if_maddr_runlock(if_t ifp); /* if_multiaddrs */ 290 291#ifdef _KERNEL 292#ifdef _SYS_EVENTHANDLER_H_ 293/* interface link layer address change event */ 294typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 295EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 296/* interface address change event */ 297typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 298EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 299/* new interface arrival event */ 300typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 301EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 302/* interface departure event */ 303typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 304EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 305/* Interface link state change event */ 306typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 307EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 308#endif /* _SYS_EVENTHANDLER_H_ */ 309 310/* 311 * interface groups 312 */ 313struct ifg_group { 314 char ifg_group[IFNAMSIZ]; 315 u_int ifg_refcnt; 316 void *ifg_pf_kif; 317 TAILQ_HEAD(, ifg_member) ifg_members; 318 TAILQ_ENTRY(ifg_group) ifg_next; 319}; 320 321struct ifg_member { 322 TAILQ_ENTRY(ifg_member) ifgm_next; 323 struct ifnet *ifgm_ifp; 324}; 325 326struct ifg_list { 327 struct ifg_group *ifgl_group; 328 TAILQ_ENTRY(ifg_list) ifgl_next; 329}; 330 331#ifdef _SYS_EVENTHANDLER_H_ 332/* group attach event */ 333typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 334EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 335/* group detach event */ 336typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 337EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 338/* group change event */ 339typedef void (*group_change_event_handler_t)(void *, const char *); 340EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 341#endif /* _SYS_EVENTHANDLER_H_ */ 342 343#define IF_AFDATA_LOCK_INIT(ifp) \ 344 rw_init(&(ifp)->if_afdata_lock, "if_afdata") 345 346#define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 347#define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 348#define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 349#define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 350#define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 351#define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 352#define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 353#define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 354 355#define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 356#define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) 357#define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) 358#define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 359 360/* 361 * 72 was chosen below because it is the size of a TCP/IP 362 * header (40) + the minimum mss (32). 363 */ 364#define IF_MINMTU 72 365#define IF_MAXMTU 65535 366 367#define TOEDEV(ifp) ((ifp)->if_llsoftc) 368 369/* 370 * The ifaddr structure contains information about one address 371 * of an interface. They are maintained by the different address families, 372 * are allocated and attached when an address is set, and are linked 373 * together so all addresses for an interface can be located. 374 * 375 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 376 * chunk of malloc'ed memory, where we store the three addresses 377 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 378 */ 379struct ifaddr { 380 struct sockaddr *ifa_addr; /* address of interface */ 381 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 382#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 383 struct sockaddr *ifa_netmask; /* used to determine subnet */ 384 struct ifnet *ifa_ifp; /* back-pointer to interface */ 385 struct carp_softc *ifa_carp; /* pointer to CARP data */ 386 TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 387 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 388 (int, struct rtentry *, struct rt_addrinfo *); 389 u_short ifa_flags; /* mostly rt_flags for cloning */ 390#define IFA_ROUTE RTF_UP /* route installed */ 391#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 392 u_int ifa_refcnt; /* references to this structure */ 393 394 counter_u64_t ifa_ipackets; 395 counter_u64_t ifa_opackets; 396 counter_u64_t ifa_ibytes; 397 counter_u64_t ifa_obytes; 398}; 399 400/* For compatibility with other BSDs. SCTP uses it. */ 401#define ifa_list ifa_link 402 403struct ifaddr * ifa_alloc(size_t size, int flags); 404void ifa_free(struct ifaddr *ifa); 405void ifa_ref(struct ifaddr *ifa); 406 407/* 408 * Multicast address structure. This is analogous to the ifaddr 409 * structure except that it keeps track of multicast addresses. 410 */ 411struct ifmultiaddr { 412 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 413 struct sockaddr *ifma_addr; /* address this membership is for */ 414 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 415 struct ifnet *ifma_ifp; /* back-pointer to interface */ 416 u_int ifma_refcount; /* reference count */ 417 void *ifma_protospec; /* protocol-specific state, if any */ 418 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 419}; 420 421extern struct rwlock ifnet_rwlock; 422extern struct sx ifnet_sxlock; 423 424#define IFNET_WLOCK() do { \ 425 sx_xlock(&ifnet_sxlock); \ 426 rw_wlock(&ifnet_rwlock); \ 427} while (0) 428 429#define IFNET_WUNLOCK() do { \ 430 rw_wunlock(&ifnet_rwlock); \ 431 sx_xunlock(&ifnet_sxlock); \ 432} while (0) 433 434/* 435 * To assert the ifnet lock, you must know not only whether it's for read or 436 * write, but also whether it was acquired with sleep support or not. 437 */ 438#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 439#define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 440#define IFNET_WLOCK_ASSERT() do { \ 441 sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 442 rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 443} while (0) 444 445#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 446#define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 447#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 448#define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 449 450/* 451 * Look up an ifnet given its index; the _ref variant also acquires a 452 * reference that must be freed using if_rele(). It is almost always a bug 453 * to call ifnet_byindex() instead if ifnet_byindex_ref(). 454 */ 455struct ifnet *ifnet_byindex(u_short idx); 456struct ifnet *ifnet_byindex_locked(u_short idx); 457struct ifnet *ifnet_byindex_ref(u_short idx); 458 459/* 460 * Given the index, ifaddr_byindex() returns the one and only 461 * link-level ifaddr for the interface. You are not supposed to use 462 * it to traverse the list of addresses associated to the interface. 463 */ 464struct ifaddr *ifaddr_byindex(u_short idx); 465 466VNET_DECLARE(struct ifnethead, ifnet); 467VNET_DECLARE(struct ifgrouphead, ifg_head); 468VNET_DECLARE(int, if_index); 469VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 470 471#define V_ifnet VNET(ifnet) 472#define V_ifg_head VNET(ifg_head) 473#define V_if_index VNET(if_index) 474#define V_loif VNET(loif) 475 476int if_addgroup(struct ifnet *, const char *); 477int if_delgroup(struct ifnet *, const char *); 478int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 479int if_allmulti(struct ifnet *, int); 480struct ifnet* if_alloc(u_char); 481void if_attach(struct ifnet *); 482void if_dead(struct ifnet *); 483int if_delmulti(struct ifnet *, struct sockaddr *); 484void if_delmulti_ifma(struct ifmultiaddr *); 485void if_detach(struct ifnet *); 486void if_vmove(struct ifnet *, struct vnet *); 487void if_purgeaddrs(struct ifnet *); 488void if_delallmulti(struct ifnet *); 489void if_down(struct ifnet *); 490struct ifmultiaddr * 491 if_findmulti(struct ifnet *, const struct sockaddr *); 492void if_free(struct ifnet *); 493void if_initname(struct ifnet *, const char *, int); 494void if_link_state_change(struct ifnet *, int); 495int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 496void if_ref(struct ifnet *); 497void if_rele(struct ifnet *); 498int if_setlladdr(struct ifnet *, const u_char *, int); 499void if_up(struct ifnet *); 500int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 501int ifpromisc(struct ifnet *, int); 502struct ifnet *ifunit(const char *); 503struct ifnet *ifunit_ref(const char *); 504 505int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 506int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 507int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *, int fib); 508 509struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 510int ifa_ifwithaddr_check(const struct sockaddr *); 511struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 512struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 513struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 514struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, struct sockaddr *, 515 u_int); 516struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 517int ifa_preferred(struct ifaddr *, struct ifaddr *); 518 519int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 520 521typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 522typedef void if_com_free_t(void *com, u_char type); 523void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 524void if_deregister_com_alloc(u_char type); 525void if_data_copy(struct ifnet *, struct if_data *); 526uint64_t if_get_counter_default(struct ifnet *, ift_counter); 527void if_inc_counter(struct ifnet *, ift_counter, int64_t); 528 529#define IF_LLADDR(ifp) \ 530 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 531 532uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 533uint64_t if_getbaudrate(if_t ifp); 534int if_setcapabilities(if_t ifp, int capabilities); 535int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 536int if_getcapabilities(if_t ifp); 537int if_togglecapenable(if_t ifp, int togglecap); 538int if_setcapenable(if_t ifp, int capenable); 539int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 540int if_getcapenable(if_t ifp); 541const char *if_getdname(if_t ifp); 542int if_setdev(if_t ifp, void *dev); 543int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 544int if_getdrvflags(if_t ifp); 545int if_setdrvflags(if_t ifp, int flags); 546int if_clearhwassist(if_t ifp); 547int if_sethwassistbits(if_t ifp, int toset, int toclear); 548int if_sethwassist(if_t ifp, int hwassist_bit); 549int if_gethwassist(if_t ifp); 550int if_setsoftc(if_t ifp, void *softc); 551void *if_getsoftc(if_t ifp); 552int if_setflags(if_t ifp, int flags); 553int if_setmtu(if_t ifp, int mtu); 554int if_getmtu(if_t ifp); 555int if_getmtu_family(if_t ifp, int family); 556int if_setflagbits(if_t ifp, int set, int clear); 557int if_getflags(if_t ifp); 558int if_sendq_empty(if_t ifp); 559int if_setsendqready(if_t ifp); 560int if_setsendqlen(if_t ifp, int tx_desc_count); 561int if_input(if_t ifp, struct mbuf* sendmp); 562int if_sendq_prepend(if_t ifp, struct mbuf *m); 563struct mbuf *if_dequeue(if_t ifp); 564int if_setifheaderlen(if_t ifp, int len); 565void if_setrcvif(struct mbuf *m, if_t ifp); 566void if_setvtag(struct mbuf *m, u_int16_t tag); 567u_int16_t if_getvtag(struct mbuf *m); 568int if_vlantrunkinuse(if_t ifp); 569caddr_t if_getlladdr(if_t ifp); 570void *if_gethandle(u_char); 571void if_bpfmtap(if_t ifp, struct mbuf *m); 572void if_etherbpfmtap(if_t ifp, struct mbuf *m); 573void if_vlancap(if_t ifp); 574 575int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max); 576int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max); 577int if_multiaddr_count(if_t ifp, int max); 578 579int if_getamcount(if_t ifp); 580struct ifaddr * if_getifaddr(if_t ifp); 581 582/* Functions */ 583void if_setinitfn(if_t ifp, void (*)(void *)); 584void if_setioctlfn(if_t ifp, int (*)(if_t, u_long, caddr_t)); 585void if_setstartfn(if_t ifp, void (*)(if_t)); 586void if_settransmitfn(if_t ifp, if_transmit_fn_t); 587void if_setqflushfn(if_t ifp, if_qflush_fn_t); 588void if_setgetcounterfn(if_t ifp, if_get_counter_t); 589 590/* Revisit the below. These are inline functions originally */ 591int drbr_inuse_drv(if_t ifp, struct buf_ring *br); 592struct mbuf* drbr_dequeue_drv(if_t ifp, struct buf_ring *br); 593int drbr_needs_enqueue_drv(if_t ifp, struct buf_ring *br); 594int drbr_enqueue_drv(if_t ifp, struct buf_ring *br, struct mbuf *m); 595 596/* TSO */ 597void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 598int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 599 600#ifdef DEVICE_POLLING 601enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 602 603typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 604int ether_poll_register(poll_handler_t *h, if_t ifp); 605int ether_poll_deregister(if_t ifp); 606#endif /* DEVICE_POLLING */ 607 608#endif /* _KERNEL */ 609 610#include <net/ifq.h> /* XXXAO: temporary unconditional include */ 611 612#endif /* !_NET_IF_VAR_H_ */ 613