1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * From: @(#)if.h 8.1 (Berkeley) 6/10/93 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NET_IF_VAR_H_ 36 #define _NET_IF_VAR_H_ 37 38 /* 39 * Structures defining a network interface, providing a packet 40 * transport mechanism (ala level 0 of the PUP protocols). 41 * 42 * Each interface accepts output datagrams of a specified maximum 43 * length, and provides higher level routines with input datagrams 44 * received from its medium. 45 * 46 * Output occurs when the routine if_output is called, with three parameters: 47 * (*ifp->if_output)(ifp, m, dst, ro) 48 * Here m is the mbuf chain to be sent and dst is the destination address. 49 * The output routine encapsulates the supplied datagram if necessary, 50 * and then transmits it on its medium. 51 * 52 * On input, each interface unwraps the data received by it, and either 53 * places it on the input queue of an internetwork datagram routine 54 * and posts the associated software interrupt, or passes the datagram to a raw 55 * packet input routine. 56 * 57 * Routines exist for locating interfaces by their addresses 58 * or for locating an interface on a certain network, as well as more general 59 * routing and gateway routines maintaining information used to locate 60 * interfaces. These routines live in the files if.c and route.c 61 */ 62 63 struct rtentry; /* ifa_rtrequest */ 64 struct socket; 65 struct carp_if; 66 struct carp_softc; 67 struct ifvlantrunk; 68 struct route; /* if_output */ 69 struct vnet; 70 struct ifmedia; 71 struct netmap_adapter; 72 struct debugnet_methods; 73 74 #ifdef _KERNEL 75 #include <sys/_eventhandler.h> 76 #include <sys/mbuf.h> /* ifqueue only? */ 77 #include <sys/buf_ring.h> 78 #include <net/vnet.h> 79 #endif /* _KERNEL */ 80 #include <sys/ck.h> 81 #include <sys/counter.h> 82 #include <sys/epoch.h> 83 #include <sys/lock.h> /* XXX */ 84 #include <sys/mutex.h> /* struct ifqueue */ 85 #include <sys/rwlock.h> /* XXX */ 86 #include <sys/sx.h> /* XXX */ 87 #include <sys/_task.h> /* if_link_task */ 88 #define IF_DUNIT_NONE -1 89 90 #include <net/altq/if_altq.h> 91 92 CK_STAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 93 CK_STAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 94 CK_STAILQ_HEAD(ifmultihead, ifmultiaddr); 95 CK_STAILQ_HEAD(ifgrouphead, ifg_group); 96 97 #ifdef _KERNEL 98 VNET_DECLARE(struct pfil_head *, link_pfil_head); 99 #define V_link_pfil_head VNET(link_pfil_head) 100 #define PFIL_ETHER_NAME "ethernet" 101 102 #define HHOOK_IPSEC_INET 0 103 #define HHOOK_IPSEC_INET6 1 104 #define HHOOK_IPSEC_COUNT 2 105 VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]); 106 VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]); 107 #define V_ipsec_hhh_in VNET(ipsec_hhh_in) 108 #define V_ipsec_hhh_out VNET(ipsec_hhh_out) 109 #endif /* _KERNEL */ 110 111 typedef enum { 112 IFCOUNTER_IPACKETS = 0, 113 IFCOUNTER_IERRORS, 114 IFCOUNTER_OPACKETS, 115 IFCOUNTER_OERRORS, 116 IFCOUNTER_COLLISIONS, 117 IFCOUNTER_IBYTES, 118 IFCOUNTER_OBYTES, 119 IFCOUNTER_IMCASTS, 120 IFCOUNTER_OMCASTS, 121 IFCOUNTER_IQDROPS, 122 IFCOUNTER_OQDROPS, 123 IFCOUNTER_NOPROTO, 124 IFCOUNTERS /* Array size. */ 125 } ift_counter; 126 127 typedef void (*if_start_fn_t)(if_t); 128 typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 129 typedef void (*if_init_fn_t)(void *); 130 typedef void (*if_input_fn_t)(struct ifnet *, struct mbuf *); 131 typedef int (*if_output_fn_t) 132 (struct ifnet *, struct mbuf *, const struct sockaddr *, struct route *); 133 typedef void (*if_qflush_fn_t)(if_t); 134 typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 135 typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 136 137 struct ifnet_hw_tsomax { 138 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 139 u_int tsomaxsegcount; /* TSO maximum segment count */ 140 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 141 }; 142 143 /* Interface encap request types */ 144 typedef enum { 145 IFENCAP_LL = 1 /* pre-calculate link-layer header */ 146 } ife_type; 147 148 /* 149 * The structure below allows to request various pre-calculated L2/L3 headers 150 * for different media. Requests varies by type (rtype field). 151 * 152 * IFENCAP_LL type: pre-calculates link header based on address family 153 * and destination lladdr. 154 * 155 * Input data fields: 156 * buf: pointer to destination buffer 157 * bufsize: buffer size 158 * flags: IFENCAP_FLAG_BROADCAST if destination is broadcast 159 * family: address family defined by AF_ constant. 160 * lladdr: pointer to link-layer address 161 * lladdr_len: length of link-layer address 162 * hdata: pointer to L3 header (optional, used for ARP requests). 163 * Output data fields: 164 * buf: encap data is stored here 165 * bufsize: resulting encap length is stored here 166 * lladdr_off: offset of link-layer address from encap hdr start 167 * hdata: L3 header may be altered if necessary 168 */ 169 170 struct if_encap_req { 171 u_char *buf; /* Destination buffer (w) */ 172 size_t bufsize; /* size of provided buffer (r) */ 173 ife_type rtype; /* request type (r) */ 174 uint32_t flags; /* Request flags (r) */ 175 int family; /* Address family AF_* (r) */ 176 int lladdr_off; /* offset from header start (w) */ 177 int lladdr_len; /* lladdr length (r) */ 178 char *lladdr; /* link-level address pointer (r) */ 179 char *hdata; /* Upper layer header data (rw) */ 180 }; 181 182 #define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */ 183 184 /* 185 * Network interface send tag support. The storage of "struct 186 * m_snd_tag" comes from the network driver and it is free to allocate 187 * as much additional space as it wants for its own use. 188 */ 189 struct ktls_session; 190 struct m_snd_tag; 191 192 #define IF_SND_TAG_TYPE_RATE_LIMIT 0 193 #define IF_SND_TAG_TYPE_UNLIMITED 1 194 #define IF_SND_TAG_TYPE_TLS 2 195 #define IF_SND_TAG_TYPE_TLS_RATE_LIMIT 3 196 #define IF_SND_TAG_TYPE_TLS_RX 4 197 #define IF_SND_TAG_TYPE_MAX 5 198 199 struct if_snd_tag_alloc_header { 200 uint32_t type; /* send tag type, see IF_SND_TAG_XXX */ 201 uint32_t flowid; /* mbuf hash value */ 202 uint32_t flowtype; /* mbuf hash type */ 203 uint8_t numa_domain; /* numa domain of associated inp */ 204 }; 205 206 struct if_snd_tag_alloc_rate_limit { 207 struct if_snd_tag_alloc_header hdr; 208 uint64_t max_rate; /* in bytes/s */ 209 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 210 uint32_t reserved; /* alignment */ 211 }; 212 213 struct if_snd_tag_alloc_tls { 214 struct if_snd_tag_alloc_header hdr; 215 struct inpcb *inp; 216 const struct ktls_session *tls; 217 }; 218 219 struct if_snd_tag_alloc_tls_rx { 220 struct if_snd_tag_alloc_header hdr; 221 struct inpcb *inp; 222 const struct ktls_session *tls; 223 uint16_t vlan_id; /* valid if non-zero */ 224 }; 225 226 struct if_snd_tag_alloc_tls_rate_limit { 227 struct if_snd_tag_alloc_header hdr; 228 struct inpcb *inp; 229 const struct ktls_session *tls; 230 uint64_t max_rate; /* in bytes/s */ 231 }; 232 233 struct if_snd_tag_rate_limit_params { 234 uint64_t max_rate; /* in bytes/s */ 235 uint32_t queue_level; /* 0 (empty) .. 65535 (full) */ 236 #define IF_SND_QUEUE_LEVEL_MIN 0 237 #define IF_SND_QUEUE_LEVEL_MAX 65535 238 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 239 }; 240 241 struct if_snd_tag_modify_tls_rx { 242 /* TCP sequence number of TLS header in host endian format */ 243 uint32_t tls_hdr_tcp_sn; 244 245 /* 246 * TLS record length, including all headers, data and trailers. 247 * If the tls_rec_length is zero, it means HW encryption resumed. 248 */ 249 uint32_t tls_rec_length; 250 251 /* TLS sequence number in host endian format */ 252 uint64_t tls_seq_number; 253 }; 254 255 union if_snd_tag_alloc_params { 256 struct if_snd_tag_alloc_header hdr; 257 struct if_snd_tag_alloc_rate_limit rate_limit; 258 struct if_snd_tag_alloc_rate_limit unlimited; 259 struct if_snd_tag_alloc_tls tls; 260 struct if_snd_tag_alloc_tls_rx tls_rx; 261 struct if_snd_tag_alloc_tls_rate_limit tls_rate_limit; 262 }; 263 264 union if_snd_tag_modify_params { 265 struct if_snd_tag_rate_limit_params rate_limit; 266 struct if_snd_tag_rate_limit_params unlimited; 267 struct if_snd_tag_rate_limit_params tls_rate_limit; 268 struct if_snd_tag_modify_tls_rx tls_rx; 269 }; 270 271 union if_snd_tag_query_params { 272 struct if_snd_tag_rate_limit_params rate_limit; 273 struct if_snd_tag_rate_limit_params unlimited; 274 struct if_snd_tag_rate_limit_params tls_rate_limit; 275 }; 276 277 typedef int (if_snd_tag_alloc_t)(struct ifnet *, union if_snd_tag_alloc_params *, 278 struct m_snd_tag **); 279 typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *); 280 typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *); 281 typedef void (if_snd_tag_free_t)(struct m_snd_tag *); 282 typedef struct m_snd_tag *(if_next_send_tag_t)(struct m_snd_tag *); 283 284 struct if_snd_tag_sw { 285 if_snd_tag_modify_t *snd_tag_modify; 286 if_snd_tag_query_t *snd_tag_query; 287 if_snd_tag_free_t *snd_tag_free; 288 if_next_send_tag_t *next_snd_tag; 289 u_int type; /* One of IF_SND_TAG_TYPE_*. */ 290 }; 291 292 /* Query return flags */ 293 #define RT_NOSUPPORT 0x00000000 /* Not supported */ 294 #define RT_IS_INDIRECT 0x00000001 /* 295 * Interface like a lagg, select 296 * the actual interface for 297 * capabilities. 298 */ 299 #define RT_IS_SELECTABLE 0x00000002 /* 300 * No rate table, you select 301 * rates and the first 302 * number_of_rates are created. 303 */ 304 #define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */ 305 #define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */ 306 #define RT_IS_SETUP_REQ 0x00000010 /* The interface setup must be called before use */ 307 308 struct if_ratelimit_query_results { 309 const uint64_t *rate_table; /* Pointer to table if present */ 310 uint32_t flags; /* Flags indicating results */ 311 uint32_t max_flows; /* Max flows using, 0=unlimited */ 312 uint32_t number_of_rates; /* How many unique rates can be created */ 313 uint32_t min_segment_burst; /* The amount the adapter bursts at each send */ 314 }; 315 316 typedef void (if_ratelimit_query_t)(struct ifnet *, 317 struct if_ratelimit_query_results *); 318 typedef int (if_ratelimit_setup_t)(struct ifnet *, uint64_t, uint32_t); 319 #define IF_NODOM 255 320 /* 321 * Locks for address lists on the network interface. 322 */ 323 #define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF) 324 #define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock) 325 326 #define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock) 327 #define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock) 328 #define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock)) 329 #define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED) 330 331 #ifdef _KERNEL 332 /* interface link layer address change event */ 333 typedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 334 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 335 /* interface address change event */ 336 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 337 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 338 typedef void (*ifaddr_event_ext_handler_t)(void *, struct ifnet *, 339 struct ifaddr *, int); 340 EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); 341 #define IFADDR_EVENT_ADD 0 342 #define IFADDR_EVENT_DEL 1 343 /* new interface arrival event */ 344 typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 345 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 346 /* interface departure event */ 347 typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 348 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 349 /* Interface link state change event */ 350 typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 351 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 352 /* Interface up/down event */ 353 #define IFNET_EVENT_UP 0 354 #define IFNET_EVENT_DOWN 1 355 #define IFNET_EVENT_PCP 2 /* priority code point, PCP */ 356 #define IFNET_EVENT_UPDATE_BAUDRATE 3 357 358 typedef void (*ifnet_event_fn)(void *, struct ifnet *ifp, int event); 359 EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 360 361 /* 362 * interface groups 363 */ 364 struct ifg_group { 365 char ifg_group[IFNAMSIZ]; 366 u_int ifg_refcnt; 367 void *ifg_pf_kif; 368 CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */ 369 CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */ 370 }; 371 372 struct ifg_member { 373 CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */ 374 struct ifnet *ifgm_ifp; 375 }; 376 377 struct ifg_list { 378 struct ifg_group *ifgl_group; 379 CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */ 380 }; 381 382 #ifdef _SYS_EVENTHANDLER_H_ 383 /* group attach event */ 384 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 385 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 386 /* group detach event */ 387 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 388 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 389 /* group change event */ 390 typedef void (*group_change_event_handler_t)(void *, const char *); 391 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 392 #endif /* _SYS_EVENTHANDLER_H_ */ 393 394 #define IF_AFDATA_LOCK_INIT(ifp) \ 395 mtx_init(&(ifp)->if_afdata_lock, "if_afdata", NULL, MTX_DEF) 396 397 #define IF_AFDATA_WLOCK(ifp) mtx_lock(&(ifp)->if_afdata_lock) 398 #define IF_AFDATA_WUNLOCK(ifp) mtx_unlock(&(ifp)->if_afdata_lock) 399 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 400 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 401 #define IF_AFDATA_TRYLOCK(ifp) mtx_trylock(&(ifp)->if_afdata_lock) 402 #define IF_AFDATA_DESTROY(ifp) mtx_destroy(&(ifp)->if_afdata_lock) 403 404 #define IF_AFDATA_LOCK_ASSERT(ifp) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(ifp)->if_afdata_lock)) 405 #define IF_AFDATA_WLOCK_ASSERT(ifp) mtx_assert(&(ifp)->if_afdata_lock, MA_OWNED) 406 #define IF_AFDATA_UNLOCK_ASSERT(ifp) mtx_assert(&(ifp)->if_afdata_lock, MA_NOTOWNED) 407 408 /* 409 * 72 was chosen below because it is the size of a TCP/IP 410 * header (40) + the minimum mss (32). 411 */ 412 #define IF_MINMTU 72 413 #define IF_MAXMTU 65535 414 415 #define TOEDEV(ifp) ((ifp)->if_llsoftc) 416 417 /* 418 * The ifaddr structure contains information about one address 419 * of an interface. They are maintained by the different address families, 420 * are allocated and attached when an address is set, and are linked 421 * together so all addresses for an interface can be located. 422 * 423 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 424 * chunk of malloc'ed memory, where we store the three addresses 425 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 426 */ 427 struct ifaddr { 428 struct sockaddr *ifa_addr; /* address of interface */ 429 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 430 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 431 struct sockaddr *ifa_netmask; /* used to determine subnet */ 432 struct ifnet *ifa_ifp; /* back-pointer to interface */ 433 struct carp_softc *ifa_carp; /* pointer to CARP data */ 434 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 435 u_short ifa_flags; /* mostly rt_flags for cloning */ 436 #define IFA_ROUTE RTF_UP /* route installed */ 437 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 438 u_int ifa_refcnt; /* references to this structure */ 439 440 counter_u64_t ifa_ipackets; 441 counter_u64_t ifa_opackets; 442 counter_u64_t ifa_ibytes; 443 counter_u64_t ifa_obytes; 444 struct epoch_context ifa_epoch_ctx; 445 }; 446 447 struct ifaddr * ifa_alloc(size_t size, int flags); 448 void ifa_free(struct ifaddr *ifa); 449 void ifa_ref(struct ifaddr *ifa); 450 int __result_use_check ifa_try_ref(struct ifaddr *ifa); 451 452 /* 453 * Multicast address structure. This is analogous to the ifaddr 454 * structure except that it keeps track of multicast addresses. 455 */ 456 #define IFMA_F_ENQUEUED 0x1 457 struct ifmultiaddr { 458 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 459 struct sockaddr *ifma_addr; /* address this membership is for */ 460 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 461 struct ifnet *ifma_ifp; /* back-pointer to interface */ 462 u_int ifma_refcount; /* reference count */ 463 int ifma_flags; 464 void *ifma_protospec; /* protocol-specific state, if any */ 465 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 466 struct epoch_context ifma_epoch_ctx; 467 }; 468 469 extern struct sx ifnet_sxlock; 470 471 #define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 472 #define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 473 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 474 #define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 475 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 476 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 477 478 /* 479 * Look up an ifnet given its index. The returned value protected from 480 * being freed by the network epoch. The _ref variant also acquires a 481 * reference that must be freed using if_rele(). 482 */ 483 struct ifnet *ifnet_byindex(u_int); 484 struct ifnet *ifnet_byindex_ref(u_int); 485 486 /* 487 * ifnet_byindexgen() looks up ifnet by index and generation count, 488 * attempting to restore a weak pointer that had been stored across 489 * the epoch. 490 */ 491 struct ifnet *ifnet_byindexgen(uint16_t idx, uint16_t gen); 492 493 VNET_DECLARE(struct ifnethead, ifnet); 494 VNET_DECLARE(struct ifgrouphead, ifg_head); 495 VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 496 497 #define V_ifnet VNET(ifnet) 498 #define V_ifg_head VNET(ifg_head) 499 #define V_loif VNET(loif) 500 501 #ifdef MCAST_VERBOSE 502 #define MCDPRINTF printf 503 #else 504 #define MCDPRINTF(...) 505 #endif 506 507 int if_addgroup(struct ifnet *, const char *); 508 int if_delgroup(struct ifnet *, const char *); 509 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 510 int if_allmulti(struct ifnet *, int); 511 struct ifnet* if_alloc(u_char); 512 struct ifnet* if_alloc_dev(u_char, device_t dev); 513 void if_attach(struct ifnet *); 514 void if_dead(struct ifnet *); 515 int if_delmulti(struct ifnet *, struct sockaddr *); 516 void if_delmulti_ifma(struct ifmultiaddr *); 517 void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 518 void if_detach(struct ifnet *); 519 void if_purgeaddrs(struct ifnet *); 520 void if_delallmulti(struct ifnet *); 521 void if_down(struct ifnet *); 522 struct ifmultiaddr * 523 if_findmulti(struct ifnet *, const struct sockaddr *); 524 void if_freemulti(struct ifmultiaddr *ifma); 525 void if_free(struct ifnet *); 526 void if_initname(struct ifnet *, const char *, int); 527 void if_link_state_change(struct ifnet *, int); 528 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 529 int if_log(struct ifnet *, int, const char *, ...) __printflike(3, 4); 530 void if_ref(struct ifnet *); 531 void if_rele(struct ifnet *); 532 bool __result_use_check if_try_ref(struct ifnet *); 533 int if_setlladdr(struct ifnet *, const u_char *, int); 534 int if_tunnel_check_nesting(struct ifnet *, struct mbuf *, uint32_t, int); 535 void if_up(struct ifnet *); 536 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 537 int ifpromisc(struct ifnet *, int); 538 struct ifnet *ifunit(const char *); 539 struct ifnet *ifunit_ref(const char *); 540 541 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 542 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 543 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 544 545 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 546 int ifa_ifwithaddr_check(const struct sockaddr *); 547 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 548 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 549 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 550 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 551 const struct sockaddr *, u_int); 552 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 553 int ifa_preferred(struct ifaddr *, struct ifaddr *); 554 555 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 556 557 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 558 typedef void if_com_free_t(void *com, u_char type); 559 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 560 void if_deregister_com_alloc(u_char type); 561 void if_data_copy(struct ifnet *, struct if_data *); 562 uint64_t if_get_counter_default(struct ifnet *, ift_counter); 563 void if_inc_counter(struct ifnet *, ift_counter, int64_t); 564 565 #define IF_LLADDR(ifp) \ 566 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 567 568 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 569 uint64_t if_getbaudrate(const if_t ifp); 570 int if_setcapabilities(if_t ifp, int capabilities); 571 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 572 int if_getcapabilities(const if_t ifp); 573 int if_togglecapenable(if_t ifp, int togglecap); 574 int if_setcapenable(if_t ifp, int capenable); 575 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 576 int if_getcapenable(const if_t ifp); 577 int if_getdunit(const if_t ifp); 578 int if_getindex(const if_t ifp); 579 const char *if_getdname(const if_t ifp); 580 void if_setdname(if_t ifp, const char *name); 581 const char *if_name(if_t ifp); 582 int if_setname(if_t ifp, const char *name); 583 void if_setdescr(if_t ifp, char *descrbuf); 584 char *if_allocdescr(size_t sz, int malloc_flag); 585 void if_freedescr(char *descrbuf); 586 int if_getalloctype(const if_t ifp); 587 int if_setdev(if_t ifp, void *dev); 588 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 589 int if_getdrvflags(const if_t ifp); 590 int if_setdrvflags(if_t ifp, int flags); 591 int if_clearhwassist(if_t ifp); 592 int if_sethwassistbits(if_t ifp, int toset, int toclear); 593 int if_sethwassist(if_t ifp, int hwassist_bit); 594 int if_gethwassist(const if_t ifp); 595 int if_togglehwassist(if_t ifp, int toggle_bits); 596 int if_setsoftc(if_t ifp, void *softc); 597 void *if_getsoftc(if_t ifp); 598 int if_setflags(if_t ifp, int flags); 599 int if_gethwaddr(const if_t ifp, struct ifreq *); 600 int if_setmtu(if_t ifp, int mtu); 601 int if_getmtu(const if_t ifp); 602 int if_getmtu_family(const if_t ifp, int family); 603 int if_setflagbits(if_t ifp, int set, int clear); 604 int if_getflags(const if_t ifp); 605 int if_sendq_empty(if_t ifp); 606 int if_setsendqready(if_t ifp); 607 int if_setsendqlen(if_t ifp, int tx_desc_count); 608 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 609 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 610 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 611 u_int if_gethwtsomax(const if_t ifp); 612 u_int if_gethwtsomaxsegcount(const if_t ifp); 613 u_int if_gethwtsomaxsegsize(const if_t ifp); 614 int if_input(if_t ifp, struct mbuf* sendmp); 615 int if_sendq_prepend(if_t ifp, struct mbuf *m); 616 struct mbuf *if_dequeue(if_t ifp); 617 int if_setifheaderlen(if_t ifp, int len); 618 void if_setrcvif(struct mbuf *m, if_t ifp); 619 void if_setvtag(struct mbuf *m, u_int16_t tag); 620 u_int16_t if_getvtag(struct mbuf *m); 621 int if_vlantrunkinuse(if_t ifp); 622 caddr_t if_getlladdr(const if_t ifp); 623 void *if_gethandle(u_char); 624 void if_bpfmtap(if_t ifp, struct mbuf *m); 625 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 626 void if_vlancap(if_t ifp); 627 int if_transmit(if_t ifp, struct mbuf *m); 628 int if_init(if_t ifp, void *ctx); 629 630 /* 631 * Traversing through interface address lists. 632 */ 633 struct sockaddr_dl; 634 typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 635 u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 636 u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 637 u_int if_lladdr_count(if_t); 638 u_int if_llmaddr_count(if_t); 639 640 int if_getamcount(const if_t ifp); 641 struct ifaddr * if_getifaddr(const if_t ifp); 642 typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 643 u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 644 645 /* Functions */ 646 void if_setinitfn(if_t ifp, if_init_fn_t); 647 void if_setinputfn(if_t ifp, if_input_fn_t); 648 void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 649 void if_setoutputfn(if_t ifp, int(*) 650 (if_t, struct mbuf *, const struct sockaddr *, struct route *)); 651 void if_setstartfn(if_t ifp, void (*)(if_t)); 652 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 653 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 654 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 655 void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 656 void if_setdebugnet_methods(struct ifnet *, struct debugnet_methods *); 657 658 /* TSO */ 659 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 660 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 661 662 /* accessors for struct ifreq */ 663 void *ifr_data_get_ptr(void *ifrp); 664 void *ifr_buffer_get_buffer(void *data); 665 size_t ifr_buffer_get_length(void *data); 666 667 int ifhwioctl(u_long, struct ifnet *, caddr_t, struct thread *); 668 669 #ifdef DEVICE_POLLING 670 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 671 672 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 673 int ether_poll_register(poll_handler_t *h, if_t ifp); 674 int ether_poll_deregister(if_t ifp); 675 #endif /* DEVICE_POLLING */ 676 677 #endif /* _KERNEL */ 678 679 #include <net/if_private.h> /* XXX: temporary until drivers converted. */ 680 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 681 682 #endif /* !_NET_IF_VAR_H_ */ 683