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 <net/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 97 #define HHOOK_IPSEC_INET 0 98 #define HHOOK_IPSEC_INET6 1 99 #define HHOOK_IPSEC_COUNT 2 100 VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]); 101 VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]); 102 #define V_ipsec_hhh_in VNET(ipsec_hhh_in) 103 #define V_ipsec_hhh_out VNET(ipsec_hhh_out) 104 #endif /* _KERNEL */ 105 106 typedef enum { 107 IFCOUNTER_IPACKETS = 0, 108 IFCOUNTER_IERRORS, 109 IFCOUNTER_OPACKETS, 110 IFCOUNTER_OERRORS, 111 IFCOUNTER_COLLISIONS, 112 IFCOUNTER_IBYTES, 113 IFCOUNTER_OBYTES, 114 IFCOUNTER_IMCASTS, 115 IFCOUNTER_OMCASTS, 116 IFCOUNTER_IQDROPS, 117 IFCOUNTER_OQDROPS, 118 IFCOUNTER_NOPROTO, 119 IFCOUNTERS /* Array size. */ 120 } ift_counter; 121 122 typedef struct ifnet * if_t; 123 124 typedef void (*if_start_fn_t)(if_t); 125 typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 126 typedef void (*if_init_fn_t)(void *); 127 typedef void (*if_qflush_fn_t)(if_t); 128 typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 129 typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 130 131 struct ifnet_hw_tsomax { 132 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 133 u_int tsomaxsegcount; /* TSO maximum segment count */ 134 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 135 }; 136 137 /* 138 * Structure defining a network interface. 139 * 140 * Size ILP32: 592 (approx) 141 * LP64: 1048 (approx) 142 */ 143 struct ifnet { 144 /* General book keeping of interface lists. */ 145 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 146 LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 147 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 148 /* protected by if_addr_lock */ 149 u_char if_alloctype; /* if_type at time of allocation */ 150 151 /* Driver and protocol specific information that remains stable. */ 152 void *if_softc; /* pointer to driver state */ 153 void *if_llsoftc; /* link layer softc */ 154 void *if_l2com; /* pointer to protocol bits */ 155 const char *if_dname; /* driver name */ 156 int if_dunit; /* unit or IF_DUNIT_NONE */ 157 u_short if_index; /* numeric abbreviation for this if */ 158 short if_index_reserved; /* spare space to grow if_index */ 159 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 160 char *if_description; /* interface description */ 161 162 /* Variable fields that are touched by the stack and drivers. */ 163 int if_flags; /* up/down, broadcast, etc. */ 164 int if_drv_flags; /* driver-managed status flags */ 165 int if_capabilities; /* interface features & capabilities */ 166 int if_capenable; /* enabled features & capabilities */ 167 void *if_linkmib; /* link-type-specific MIB data */ 168 size_t if_linkmiblen; /* length of above data */ 169 u_int if_refcount; /* reference count */ 170 171 /* These fields are shared with struct if_data. */ 172 uint8_t if_type; /* ethernet, tokenring, etc */ 173 uint8_t if_addrlen; /* media address length */ 174 uint8_t if_hdrlen; /* media header length */ 175 uint8_t if_link_state; /* current link state */ 176 uint32_t if_mtu; /* maximum transmission unit */ 177 uint32_t if_metric; /* routing metric (external only) */ 178 uint64_t if_baudrate; /* linespeed */ 179 uint64_t if_hwassist; /* HW offload capabilities, see IFCAP */ 180 time_t if_epoch; /* uptime at attach or stat reset */ 181 struct timeval if_lastchange; /* time of last administrative change */ 182 183 struct ifaltq if_snd; /* output queue (includes altq) */ 184 struct task if_linktask; /* task for link change events */ 185 186 /* Addresses of different protocol families assigned to this if. */ 187 struct rwlock if_addr_lock; /* lock to protect address lists */ 188 /* 189 * if_addrhead is the list of all addresses associated to 190 * an interface. 191 * Some code in the kernel assumes that first element 192 * of the list has type AF_LINK, and contains sockaddr_dl 193 * addresses which store the link-level address and the name 194 * of the interface. 195 * However, access to the AF_LINK address through this 196 * field is deprecated. Use if_addr or ifaddr_byindex() instead. 197 */ 198 struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 199 struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 200 int if_amcount; /* number of all-multicast requests */ 201 struct ifaddr *if_addr; /* pointer to link-level address */ 202 const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 203 struct rwlock if_afdata_lock; 204 void *if_afdata[AF_MAX]; 205 int if_afdata_initialized; 206 207 /* Additional features hung off the interface. */ 208 u_int if_fib; /* interface FIB */ 209 struct vnet *if_vnet; /* pointer to network stack instance */ 210 struct vnet *if_home_vnet; /* where this ifnet originates from */ 211 struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 212 struct bpf_if *if_bpf; /* packet filter structure */ 213 int if_pcount; /* number of promiscuous listeners */ 214 void *if_bridge; /* bridge glue */ 215 void *if_lagg; /* lagg glue */ 216 void *if_pf_kif; /* pf glue */ 217 struct carp_if *if_carp; /* carp interface structure */ 218 struct label *if_label; /* interface MAC label */ 219 struct netmap_adapter *if_netmap; /* netmap(4) softc */ 220 221 /* Various procedures of the layer2 encapsulation and drivers. */ 222 int (*if_output) /* output routine (enqueue) */ 223 (struct ifnet *, struct mbuf *, const struct sockaddr *, 224 struct route *); 225 void (*if_input) /* input routine (from h/w driver) */ 226 (struct ifnet *, struct mbuf *); 227 if_start_fn_t if_start; /* initiate output routine */ 228 if_ioctl_fn_t if_ioctl; /* ioctl routine */ 229 if_init_fn_t if_init; /* Init routine */ 230 int (*if_resolvemulti) /* validate/resolve multicast */ 231 (struct ifnet *, struct sockaddr **, struct sockaddr *); 232 if_qflush_fn_t if_qflush; /* flush any queue */ 233 if_transmit_fn_t if_transmit; /* initiate output routine */ 234 235 void (*if_reassign) /* reassign to vnet routine */ 236 (struct ifnet *, struct vnet *, char *); 237 if_get_counter_t if_get_counter; /* get counter values */ 238 239 /* Statistics. */ 240 counter_u64_t if_counters[IFCOUNTERS]; 241 242 /* Stuff that's only temporary and doesn't belong here. */ 243 244 /* 245 * Network adapter TSO limits: 246 * =========================== 247 * 248 * If the "if_hw_tsomax" field is zero the maximum segment 249 * length limit does not apply. If the "if_hw_tsomaxsegcount" 250 * or the "if_hw_tsomaxsegsize" field is zero the TSO segment 251 * count limit does not apply. If all three fields are zero, 252 * there is no TSO limit. 253 * 254 * NOTE: The TSO limits should reflect the values used in the 255 * BUSDMA tag a network adapter is using to load a mbuf chain 256 * for transmission. The TCP/IP network stack will subtract 257 * space for all linklevel and protocol level headers and 258 * ensure that the full mbuf chain passed to the network 259 * adapter fits within the given limits. 260 */ 261 u_int if_hw_tsomax; /* TSO maximum size in bytes */ 262 u_int if_hw_tsomaxsegcount; /* TSO maximum segment count */ 263 u_int if_hw_tsomaxsegsize; /* TSO maximum segment size in bytes */ 264 265 /* 266 * Spare fields to be added before branching a stable branch, so 267 * that structure can be enhanced without changing the kernel 268 * binary interface. 269 */ 270 }; 271 272 /* for compatibility with other BSDs */ 273 #define if_addrlist if_addrhead 274 #define if_list if_link 275 #define if_name(ifp) ((ifp)->if_xname) 276 277 /* 278 * Locks for address lists on the network interface. 279 */ 280 #define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock") 281 #define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock) 282 #define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock) 283 #define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock) 284 #define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock) 285 #define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock) 286 #define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED) 287 #define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED) 288 289 /* 290 * Function variations on locking macros intended to be used by loadable 291 * kernel modules in order to divorce them from the internals of address list 292 * locking. 293 */ 294 void if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 295 void if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 296 void if_maddr_rlock(if_t ifp); /* if_multiaddrs */ 297 void if_maddr_runlock(if_t ifp); /* if_multiaddrs */ 298 299 #ifdef _KERNEL 300 #ifdef _SYS_EVENTHANDLER_H_ 301 /* interface link layer address change event */ 302 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 303 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 304 /* interface address change event */ 305 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 306 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 307 /* new interface arrival event */ 308 typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 309 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 310 /* interface departure event */ 311 typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 312 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 313 /* Interface link state change event */ 314 typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 315 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 316 #endif /* _SYS_EVENTHANDLER_H_ */ 317 318 /* 319 * interface groups 320 */ 321 struct ifg_group { 322 char ifg_group[IFNAMSIZ]; 323 u_int ifg_refcnt; 324 void *ifg_pf_kif; 325 TAILQ_HEAD(, ifg_member) ifg_members; 326 TAILQ_ENTRY(ifg_group) ifg_next; 327 }; 328 329 struct ifg_member { 330 TAILQ_ENTRY(ifg_member) ifgm_next; 331 struct ifnet *ifgm_ifp; 332 }; 333 334 struct ifg_list { 335 struct ifg_group *ifgl_group; 336 TAILQ_ENTRY(ifg_list) ifgl_next; 337 }; 338 339 #ifdef _SYS_EVENTHANDLER_H_ 340 /* group attach event */ 341 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 342 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 343 /* group detach event */ 344 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 345 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 346 /* group change event */ 347 typedef void (*group_change_event_handler_t)(void *, const char *); 348 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 349 #endif /* _SYS_EVENTHANDLER_H_ */ 350 351 #define IF_AFDATA_LOCK_INIT(ifp) \ 352 rw_init(&(ifp)->if_afdata_lock, "if_afdata") 353 354 #define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 355 #define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 356 #define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 357 #define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 358 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 359 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 360 #define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 361 #define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 362 363 #define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 364 #define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) 365 #define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) 366 #define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 367 368 /* 369 * 72 was chosen below because it is the size of a TCP/IP 370 * header (40) + the minimum mss (32). 371 */ 372 #define IF_MINMTU 72 373 #define IF_MAXMTU 65535 374 375 #define TOEDEV(ifp) ((ifp)->if_llsoftc) 376 377 /* 378 * The ifaddr structure contains information about one address 379 * of an interface. They are maintained by the different address families, 380 * are allocated and attached when an address is set, and are linked 381 * together so all addresses for an interface can be located. 382 * 383 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 384 * chunk of malloc'ed memory, where we store the three addresses 385 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 386 */ 387 struct ifaddr { 388 struct sockaddr *ifa_addr; /* address of interface */ 389 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 390 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 391 struct sockaddr *ifa_netmask; /* used to determine subnet */ 392 struct ifnet *ifa_ifp; /* back-pointer to interface */ 393 struct carp_softc *ifa_carp; /* pointer to CARP data */ 394 TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 395 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 396 (int, struct rtentry *, struct rt_addrinfo *); 397 u_short ifa_flags; /* mostly rt_flags for cloning */ 398 #define IFA_ROUTE RTF_UP /* route installed */ 399 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 400 u_int ifa_refcnt; /* references to this structure */ 401 402 counter_u64_t ifa_ipackets; 403 counter_u64_t ifa_opackets; 404 counter_u64_t ifa_ibytes; 405 counter_u64_t ifa_obytes; 406 }; 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); 414 415 /* 416 * Multicast address structure. This is analogous to the ifaddr 417 * structure except that it keeps track of multicast addresses. 418 */ 419 struct ifmultiaddr { 420 TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 421 struct sockaddr *ifma_addr; /* address this membership is for */ 422 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 423 struct ifnet *ifma_ifp; /* back-pointer to interface */ 424 u_int ifma_refcount; /* reference count */ 425 void *ifma_protospec; /* protocol-specific state, if any */ 426 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 427 }; 428 429 extern struct rwlock ifnet_rwlock; 430 extern struct sx ifnet_sxlock; 431 432 #define IFNET_WLOCK() do { \ 433 sx_xlock(&ifnet_sxlock); \ 434 rw_wlock(&ifnet_rwlock); \ 435 } while (0) 436 437 #define IFNET_WUNLOCK() do { \ 438 rw_wunlock(&ifnet_rwlock); \ 439 sx_xunlock(&ifnet_sxlock); \ 440 } while (0) 441 442 /* 443 * To assert the ifnet lock, you must know not only whether it's for read or 444 * write, but also whether it was acquired with sleep support or not. 445 */ 446 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 447 #define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 448 #define IFNET_WLOCK_ASSERT() do { \ 449 sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 450 rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 451 } while (0) 452 453 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 454 #define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 455 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 456 #define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 457 458 /* 459 * Look up an ifnet given its index; the _ref variant also acquires a 460 * reference that must be freed using if_rele(). It is almost always a bug 461 * to call ifnet_byindex() instead if ifnet_byindex_ref(). 462 */ 463 struct ifnet *ifnet_byindex(u_short idx); 464 struct ifnet *ifnet_byindex_locked(u_short idx); 465 struct ifnet *ifnet_byindex_ref(u_short idx); 466 467 /* 468 * Given the index, ifaddr_byindex() returns the one and only 469 * link-level ifaddr for the interface. You are not supposed to use 470 * it to traverse the list of addresses associated to the interface. 471 */ 472 struct ifaddr *ifaddr_byindex(u_short idx); 473 474 VNET_DECLARE(struct ifnethead, ifnet); 475 VNET_DECLARE(struct ifgrouphead, ifg_head); 476 VNET_DECLARE(int, if_index); 477 VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 478 479 #define V_ifnet VNET(ifnet) 480 #define V_ifg_head VNET(ifg_head) 481 #define V_if_index VNET(if_index) 482 #define V_loif VNET(loif) 483 484 int if_addgroup(struct ifnet *, const char *); 485 int if_delgroup(struct ifnet *, const char *); 486 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 487 int if_allmulti(struct ifnet *, int); 488 struct ifnet* if_alloc(u_char); 489 void if_attach(struct ifnet *); 490 void if_dead(struct ifnet *); 491 int if_delmulti(struct ifnet *, struct sockaddr *); 492 void if_delmulti_ifma(struct ifmultiaddr *); 493 void if_detach(struct ifnet *); 494 void if_vmove(struct ifnet *, struct vnet *); 495 void if_purgeaddrs(struct ifnet *); 496 void if_delallmulti(struct ifnet *); 497 void if_down(struct ifnet *); 498 struct ifmultiaddr * 499 if_findmulti(struct ifnet *, const struct sockaddr *); 500 void if_free(struct ifnet *); 501 void if_initname(struct ifnet *, const char *, int); 502 void if_link_state_change(struct ifnet *, int); 503 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 504 void if_ref(struct ifnet *); 505 void if_rele(struct ifnet *); 506 int if_setlladdr(struct ifnet *, const u_char *, int); 507 void if_up(struct ifnet *); 508 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 509 int ifpromisc(struct ifnet *, int); 510 struct ifnet *ifunit(const char *); 511 struct ifnet *ifunit_ref(const char *); 512 513 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 514 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 515 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 516 517 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 518 int ifa_ifwithaddr_check(const struct sockaddr *); 519 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 520 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 521 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 522 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, struct sockaddr *, 523 u_int); 524 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 525 int ifa_preferred(struct ifaddr *, struct ifaddr *); 526 527 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 528 529 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 530 typedef void if_com_free_t(void *com, u_char type); 531 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 532 void if_deregister_com_alloc(u_char type); 533 void if_data_copy(struct ifnet *, struct if_data *); 534 uint64_t if_get_counter_default(struct ifnet *, ift_counter); 535 void if_inc_counter(struct ifnet *, ift_counter, int64_t); 536 537 #define IF_LLADDR(ifp) \ 538 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 539 540 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 541 uint64_t if_getbaudrate(if_t ifp); 542 int if_setcapabilities(if_t ifp, int capabilities); 543 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 544 int if_getcapabilities(if_t ifp); 545 int if_togglecapenable(if_t ifp, int togglecap); 546 int if_setcapenable(if_t ifp, int capenable); 547 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 548 int if_getcapenable(if_t ifp); 549 const char *if_getdname(if_t ifp); 550 int if_setdev(if_t ifp, void *dev); 551 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 552 int if_getdrvflags(if_t ifp); 553 int if_setdrvflags(if_t ifp, int flags); 554 int if_clearhwassist(if_t ifp); 555 int if_sethwassistbits(if_t ifp, int toset, int toclear); 556 int if_sethwassist(if_t ifp, int hwassist_bit); 557 int if_gethwassist(if_t ifp); 558 int if_setsoftc(if_t ifp, void *softc); 559 void *if_getsoftc(if_t ifp); 560 int if_setflags(if_t ifp, int flags); 561 int if_setmtu(if_t ifp, int mtu); 562 int if_getmtu(if_t ifp); 563 int if_getmtu_family(if_t ifp, int family); 564 int if_setflagbits(if_t ifp, int set, int clear); 565 int if_getflags(if_t ifp); 566 int if_sendq_empty(if_t ifp); 567 int if_setsendqready(if_t ifp); 568 int if_setsendqlen(if_t ifp, int tx_desc_count); 569 int if_input(if_t ifp, struct mbuf* sendmp); 570 int if_sendq_prepend(if_t ifp, struct mbuf *m); 571 struct mbuf *if_dequeue(if_t ifp); 572 int if_setifheaderlen(if_t ifp, int len); 573 void if_setrcvif(struct mbuf *m, if_t ifp); 574 void if_setvtag(struct mbuf *m, u_int16_t tag); 575 u_int16_t if_getvtag(struct mbuf *m); 576 int if_vlantrunkinuse(if_t ifp); 577 caddr_t if_getlladdr(if_t ifp); 578 void *if_gethandle(u_char); 579 void if_bpfmtap(if_t ifp, struct mbuf *m); 580 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 581 void if_vlancap(if_t ifp); 582 583 int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max); 584 int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max); 585 int if_multiaddr_count(if_t ifp, int max); 586 587 int if_getamcount(if_t ifp); 588 struct ifaddr * if_getifaddr(if_t ifp); 589 590 /* Functions */ 591 void if_setinitfn(if_t ifp, void (*)(void *)); 592 void if_setioctlfn(if_t ifp, int (*)(if_t, u_long, caddr_t)); 593 void if_setstartfn(if_t ifp, void (*)(if_t)); 594 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 595 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 596 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 597 598 /* Revisit the below. These are inline functions originally */ 599 int drbr_inuse_drv(if_t ifp, struct buf_ring *br); 600 struct mbuf* drbr_dequeue_drv(if_t ifp, struct buf_ring *br); 601 int drbr_needs_enqueue_drv(if_t ifp, struct buf_ring *br); 602 int drbr_enqueue_drv(if_t ifp, struct buf_ring *br, struct mbuf *m); 603 604 /* TSO */ 605 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 606 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 607 608 #ifdef DEVICE_POLLING 609 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 610 611 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 612 int ether_poll_register(poll_handler_t *h, if_t ifp); 613 int ether_poll_deregister(if_t ifp); 614 #endif /* DEVICE_POLLING */ 615 616 #endif /* _KERNEL */ 617 618 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 619 620 #endif /* !_NET_IF_VAR_H_ */ 621