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)(if_t, struct mbuf *); 131 typedef int (*if_output_fn_t)(if_t, struct mbuf *, const struct sockaddr *, 132 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 typedef void (*if_reassign_fn_t)(if_t, struct vnet *, char *); 137 138 struct ifnet_hw_tsomax { 139 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 140 u_int tsomaxsegcount; /* TSO maximum segment count */ 141 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 142 }; 143 144 /* Interface encap request types */ 145 typedef enum { 146 IFENCAP_LL = 1 /* pre-calculate link-layer header */ 147 } ife_type; 148 149 /* 150 * The structure below allows to request various pre-calculated L2/L3 headers 151 * for different media. Requests varies by type (rtype field). 152 * 153 * IFENCAP_LL type: pre-calculates link header based on address family 154 * and destination lladdr. 155 * 156 * Input data fields: 157 * buf: pointer to destination buffer 158 * bufsize: buffer size 159 * flags: IFENCAP_FLAG_BROADCAST if destination is broadcast 160 * family: address family defined by AF_ constant. 161 * lladdr: pointer to link-layer address 162 * lladdr_len: length of link-layer address 163 * hdata: pointer to L3 header (optional, used for ARP requests). 164 * Output data fields: 165 * buf: encap data is stored here 166 * bufsize: resulting encap length is stored here 167 * lladdr_off: offset of link-layer address from encap hdr start 168 * hdata: L3 header may be altered if necessary 169 */ 170 171 struct if_encap_req { 172 u_char *buf; /* Destination buffer (w) */ 173 size_t bufsize; /* size of provided buffer (r) */ 174 ife_type rtype; /* request type (r) */ 175 uint32_t flags; /* Request flags (r) */ 176 int family; /* Address family AF_* (r) */ 177 int lladdr_off; /* offset from header start (w) */ 178 int lladdr_len; /* lladdr length (r) */ 179 char *lladdr; /* link-level address pointer (r) */ 180 char *hdata; /* Upper layer header data (rw) */ 181 }; 182 183 #define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */ 184 185 /* 186 * Network interface send tag support. The storage of "struct 187 * m_snd_tag" comes from the network driver and it is free to allocate 188 * as much additional space as it wants for its own use. 189 */ 190 struct ktls_session; 191 struct m_snd_tag; 192 193 #define IF_SND_TAG_TYPE_RATE_LIMIT 0 194 #define IF_SND_TAG_TYPE_UNLIMITED 1 195 #define IF_SND_TAG_TYPE_TLS 2 196 #define IF_SND_TAG_TYPE_TLS_RATE_LIMIT 3 197 #define IF_SND_TAG_TYPE_TLS_RX 4 198 #define IF_SND_TAG_TYPE_MAX 5 199 200 struct if_snd_tag_alloc_header { 201 uint32_t type; /* send tag type, see IF_SND_TAG_XXX */ 202 uint32_t flowid; /* mbuf hash value */ 203 uint32_t flowtype; /* mbuf hash type */ 204 uint8_t numa_domain; /* numa domain of associated inp */ 205 }; 206 207 struct if_snd_tag_alloc_rate_limit { 208 struct if_snd_tag_alloc_header hdr; 209 uint64_t max_rate; /* in bytes/s */ 210 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 211 uint32_t reserved; /* alignment */ 212 }; 213 214 struct if_snd_tag_alloc_tls { 215 struct if_snd_tag_alloc_header hdr; 216 struct inpcb *inp; 217 const struct ktls_session *tls; 218 }; 219 220 struct if_snd_tag_alloc_tls_rx { 221 struct if_snd_tag_alloc_header hdr; 222 struct inpcb *inp; 223 const struct ktls_session *tls; 224 uint16_t vlan_id; /* valid if non-zero */ 225 }; 226 227 struct if_snd_tag_alloc_tls_rate_limit { 228 struct if_snd_tag_alloc_header hdr; 229 struct inpcb *inp; 230 const struct ktls_session *tls; 231 uint64_t max_rate; /* in bytes/s */ 232 }; 233 234 struct if_snd_tag_rate_limit_params { 235 uint64_t max_rate; /* in bytes/s */ 236 uint32_t queue_level; /* 0 (empty) .. 65535 (full) */ 237 #define IF_SND_QUEUE_LEVEL_MIN 0 238 #define IF_SND_QUEUE_LEVEL_MAX 65535 239 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 240 }; 241 242 struct if_snd_tag_modify_tls_rx { 243 /* TCP sequence number of TLS header in host endian format */ 244 uint32_t tls_hdr_tcp_sn; 245 246 /* 247 * TLS record length, including all headers, data and trailers. 248 * If the tls_rec_length is zero, it means HW encryption resumed. 249 */ 250 uint32_t tls_rec_length; 251 252 /* TLS sequence number in host endian format */ 253 uint64_t tls_seq_number; 254 }; 255 256 union if_snd_tag_alloc_params { 257 struct if_snd_tag_alloc_header hdr; 258 struct if_snd_tag_alloc_rate_limit rate_limit; 259 struct if_snd_tag_alloc_rate_limit unlimited; 260 struct if_snd_tag_alloc_tls tls; 261 struct if_snd_tag_alloc_tls_rx tls_rx; 262 struct if_snd_tag_alloc_tls_rate_limit tls_rate_limit; 263 }; 264 265 union if_snd_tag_modify_params { 266 struct if_snd_tag_rate_limit_params rate_limit; 267 struct if_snd_tag_rate_limit_params unlimited; 268 struct if_snd_tag_rate_limit_params tls_rate_limit; 269 struct if_snd_tag_modify_tls_rx tls_rx; 270 }; 271 272 union if_snd_tag_query_params { 273 struct if_snd_tag_rate_limit_params rate_limit; 274 struct if_snd_tag_rate_limit_params unlimited; 275 struct if_snd_tag_rate_limit_params tls_rate_limit; 276 }; 277 278 typedef int (if_snd_tag_alloc_t)(if_t, union if_snd_tag_alloc_params *, 279 struct m_snd_tag **); 280 typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *); 281 typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *); 282 typedef void (if_snd_tag_free_t)(struct m_snd_tag *); 283 typedef struct m_snd_tag *(if_next_send_tag_t)(struct m_snd_tag *); 284 285 struct if_snd_tag_sw { 286 if_snd_tag_modify_t *snd_tag_modify; 287 if_snd_tag_query_t *snd_tag_query; 288 if_snd_tag_free_t *snd_tag_free; 289 if_next_send_tag_t *next_snd_tag; 290 u_int type; /* One of IF_SND_TAG_TYPE_*. */ 291 }; 292 293 /* Query return flags */ 294 #define RT_NOSUPPORT 0x00000000 /* Not supported */ 295 #define RT_IS_INDIRECT 0x00000001 /* 296 * Interface like a lagg, select 297 * the actual interface for 298 * capabilities. 299 */ 300 #define RT_IS_SELECTABLE 0x00000002 /* 301 * No rate table, you select 302 * rates and the first 303 * number_of_rates are created. 304 */ 305 #define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */ 306 #define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */ 307 #define RT_IS_SETUP_REQ 0x00000010 /* The interface setup must be called before use */ 308 309 struct if_ratelimit_query_results { 310 const uint64_t *rate_table; /* Pointer to table if present */ 311 uint32_t flags; /* Flags indicating results */ 312 uint32_t max_flows; /* Max flows using, 0=unlimited */ 313 uint32_t number_of_rates; /* How many unique rates can be created */ 314 uint32_t min_segment_burst; /* The amount the adapter bursts at each send */ 315 }; 316 317 typedef void (if_ratelimit_query_t)(if_t, 318 struct if_ratelimit_query_results *); 319 typedef int (if_ratelimit_setup_t)(if_t, uint64_t, uint32_t); 320 #define IF_NODOM 255 321 /* 322 * Locks for address lists on the network interface. 323 */ 324 #define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF) 325 #define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock) 326 327 #define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock) 328 #define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock) 329 #define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock)) 330 #define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED) 331 332 #ifdef _KERNEL 333 /* interface link layer address change event */ 334 typedef void (*iflladdr_event_handler_t)(void *, if_t); 335 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 336 /* interface address change event */ 337 typedef void (*ifaddr_event_handler_t)(void *, if_t); 338 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 339 typedef void (*ifaddr_event_ext_handler_t)(void *, if_t, 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 *, if_t); 345 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 346 /* interface departure event */ 347 typedef void (*ifnet_departure_event_handler_t)(void *, if_t); 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 *, if_t, 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 *, if_t 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 if_t 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 /* 395 * 72 was chosen below because it is the size of a TCP/IP 396 * header (40) + the minimum mss (32). 397 */ 398 #define IF_MINMTU 72 399 #define IF_MAXMTU 65535 400 401 #define TOEDEV(ifp) if_getllsoftc(ifp) 402 #define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) 403 404 /* 405 * The ifaddr structure contains information about one address 406 * of an interface. They are maintained by the different address families, 407 * are allocated and attached when an address is set, and are linked 408 * together so all addresses for an interface can be located. 409 * 410 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 411 * chunk of malloc'ed memory, where we store the three addresses 412 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 413 */ 414 struct ifaddr { 415 struct sockaddr *ifa_addr; /* address of interface */ 416 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 417 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 418 struct sockaddr *ifa_netmask; /* used to determine subnet */ 419 if_t ifa_ifp; /* back-pointer to interface */ 420 struct carp_softc *ifa_carp; /* pointer to CARP data */ 421 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 422 u_short ifa_flags; /* mostly rt_flags for cloning */ 423 #define IFA_ROUTE RTF_UP /* route installed */ 424 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 425 u_int ifa_refcnt; /* references to this structure */ 426 427 counter_u64_t ifa_ipackets; 428 counter_u64_t ifa_opackets; 429 counter_u64_t ifa_ibytes; 430 counter_u64_t ifa_obytes; 431 struct epoch_context ifa_epoch_ctx; 432 }; 433 434 struct ifaddr * ifa_alloc(size_t size, int flags); 435 void ifa_free(struct ifaddr *ifa); 436 void ifa_ref(struct ifaddr *ifa); 437 int __result_use_check ifa_try_ref(struct ifaddr *ifa); 438 439 /* 440 * Multicast address structure. This is analogous to the ifaddr 441 * structure except that it keeps track of multicast addresses. 442 */ 443 #define IFMA_F_ENQUEUED 0x1 444 struct ifmultiaddr { 445 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 446 struct sockaddr *ifma_addr; /* address this membership is for */ 447 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 448 if_t ifma_ifp; /* back-pointer to interface */ 449 u_int ifma_refcount; /* reference count */ 450 int ifma_flags; 451 void *ifma_protospec; /* protocol-specific state, if any */ 452 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 453 struct epoch_context ifma_epoch_ctx; 454 }; 455 456 extern struct sx ifnet_sxlock; 457 458 #define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 459 #define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 460 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 461 #define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 462 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 463 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 464 465 /* 466 * Look up an ifnet given its index. The returned value protected from 467 * being freed by the network epoch. The _ref variant also acquires a 468 * reference that must be freed using if_rele(). 469 */ 470 if_t ifnet_byindex(u_int); 471 if_t ifnet_byindex_ref(u_int); 472 473 /* 474 * ifnet_byindexgen() looks up ifnet by index and generation count, 475 * attempting to restore a weak pointer that had been stored across 476 * the epoch. 477 */ 478 if_t ifnet_byindexgen(uint16_t idx, uint16_t gen); 479 480 VNET_DECLARE(struct ifnethead, ifnet); 481 VNET_DECLARE(struct ifgrouphead, ifg_head); 482 VNET_DECLARE(if_t, loif); /* first loopback interface */ 483 484 #define V_ifnet VNET(ifnet) 485 #define V_ifg_head VNET(ifg_head) 486 #define V_loif VNET(loif) 487 488 #ifdef MCAST_VERBOSE 489 #define MCDPRINTF printf 490 #else 491 #define MCDPRINTF(...) 492 #endif 493 494 int if_addgroup(if_t, const char *); 495 int if_delgroup(if_t, const char *); 496 int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **); 497 int if_allmulti(if_t, int); 498 if_t if_alloc(u_char); 499 if_t if_alloc_dev(u_char, device_t dev); 500 void if_attach(if_t); 501 void if_dead(if_t); 502 int if_delmulti(if_t, struct sockaddr *); 503 void if_delmulti_ifma(struct ifmultiaddr *); 504 void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 505 void if_detach(if_t); 506 void if_purgeaddrs(if_t); 507 void if_delallmulti(if_t); 508 void if_down(if_t); 509 struct ifmultiaddr * 510 if_findmulti(if_t, const struct sockaddr *); 511 void if_freemulti(struct ifmultiaddr *ifma); 512 void if_free(if_t); 513 void if_initname(if_t, const char *, int); 514 void if_link_state_change(if_t, int); 515 int if_printf(if_t, const char *, ...) __printflike(2, 3); 516 int if_log(if_t, int, const char *, ...) __printflike(3, 4); 517 void if_ref(if_t); 518 void if_rele(if_t); 519 bool __result_use_check if_try_ref(if_t); 520 int if_setlladdr(if_t, const u_char *, int); 521 int if_tunnel_check_nesting(if_t, struct mbuf *, uint32_t, int); 522 void if_up(if_t); 523 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 524 int ifpromisc(if_t, int); 525 if_t ifunit(const char *); 526 if_t ifunit_ref(const char *); 527 528 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 529 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 530 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 531 532 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 533 int ifa_ifwithaddr_check(const struct sockaddr *); 534 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 535 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 536 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 537 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 538 const struct sockaddr *, u_int); 539 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, if_t); 540 int ifa_preferred(struct ifaddr *, struct ifaddr *); 541 542 int if_simloop(if_t ifp, struct mbuf *m, int af, int hlen); 543 544 typedef void *if_com_alloc_t(u_char type, if_t ifp); 545 typedef void if_com_free_t(void *com, u_char type); 546 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 547 void if_deregister_com_alloc(u_char type); 548 void if_data_copy(if_t, struct if_data *); 549 uint64_t if_get_counter_default(if_t, ift_counter); 550 void if_inc_counter(if_t, ift_counter, int64_t); 551 552 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 553 uint64_t if_getbaudrate(const if_t ifp); 554 int if_setcapabilities(if_t ifp, int capabilities); 555 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 556 int if_getcapabilities(const if_t ifp); 557 int if_togglecapenable(if_t ifp, int togglecap); 558 int if_setcapenable(if_t ifp, int capenable); 559 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 560 int if_getcapenable(const if_t ifp); 561 int if_setcapabilities2(if_t ifp, int capabilities); 562 int if_setcapabilities2bit(if_t ifp, int setbit, int clearbit); 563 int if_getcapabilities2(const if_t ifp); 564 int if_togglecapenable2(if_t ifp, int togglecap); 565 int if_setcapenable2(if_t ifp, int capenable); 566 int if_setcapenable2bit(if_t ifp, int setcap, int clearcap); 567 int if_getcapenable2(const if_t ifp); 568 int if_getdunit(const if_t ifp); 569 int if_getindex(const if_t ifp); 570 int if_getidxgen(const if_t ifp); 571 const char *if_getdname(const if_t ifp); 572 void if_setdname(if_t ifp, const char *name); 573 const char *if_name(if_t ifp); 574 int if_setname(if_t ifp, const char *name); 575 int if_rename(if_t ifp, char *new_name); 576 const char *if_getdescr(if_t ifp); 577 void if_setdescr(if_t ifp, char *descrbuf); 578 char *if_allocdescr(size_t sz, int malloc_flag); 579 void if_freedescr(char *descrbuf); 580 void if_setlastchange(if_t ifp); 581 int if_getalloctype(const if_t ifp); 582 int if_gettype(const if_t ifp); 583 int if_setdev(if_t ifp, void *dev); 584 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 585 int if_getdrvflags(const if_t ifp); 586 int if_setdrvflags(if_t ifp, int flags); 587 int if_getlinkstate(if_t ifp); 588 int if_clearhwassist(if_t ifp); 589 int if_sethwassistbits(if_t ifp, int toset, int toclear); 590 int if_sethwassist(if_t ifp, int hwassist_bit); 591 int if_gethwassist(const if_t ifp); 592 int if_togglehwassist(if_t ifp, int toggle_bits); 593 int if_setsoftc(if_t ifp, void *softc); 594 void *if_getsoftc(if_t ifp); 595 int if_setflags(if_t ifp, int flags); 596 void if_setllsoftc(if_t ifp, void *softc); 597 void *if_getllsoftc(if_t ifp); 598 u_int if_getfib(if_t ifp); 599 uint8_t if_getaddrlen(if_t ifp); 600 int if_gethwaddr(const if_t ifp, struct ifreq *); 601 const uint8_t *if_getbroadcastaddr(const if_t ifp); 602 void if_setbroadcastaddr(if_t ifp, const uint8_t *); 603 int if_setmtu(if_t ifp, int mtu); 604 int if_getmtu(const if_t ifp); 605 int if_getmtu_family(const if_t ifp, int family); 606 void if_notifymtu(if_t ifp); 607 int if_setflagbits(if_t ifp, int set, int clear); 608 int if_setflags(if_t ifp, int flags); 609 int if_getflags(const if_t ifp); 610 int if_getnumadomain(if_t ifp); 611 int if_sendq_empty(if_t ifp); 612 int if_setsendqready(if_t ifp); 613 int if_setsendqlen(if_t ifp, int tx_desc_count); 614 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 615 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 616 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 617 u_int if_gethwtsomax(const if_t ifp); 618 u_int if_gethwtsomaxsegcount(const if_t ifp); 619 u_int if_gethwtsomaxsegsize(const if_t ifp); 620 void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); 621 struct netmap_adapter *if_getnetmapadapter(if_t ifp); 622 void if_input(if_t ifp, struct mbuf* sendmp); 623 int if_sendq_prepend(if_t ifp, struct mbuf *m); 624 struct mbuf *if_dequeue(if_t ifp); 625 int if_setifheaderlen(if_t ifp, int len); 626 void if_setrcvif(struct mbuf *m, if_t ifp); 627 void if_setvtag(struct mbuf *m, u_int16_t tag); 628 u_int16_t if_getvtag(struct mbuf *m); 629 int if_vlantrunkinuse(if_t ifp); 630 caddr_t if_getlladdr(const if_t ifp); 631 struct vnet *if_getvnet(const if_t ifp); 632 void *if_gethandle(u_char); 633 void if_bpfmtap(if_t ifp, struct mbuf *m); 634 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 635 void if_vlancap(if_t ifp); 636 int if_transmit(if_t ifp, struct mbuf *m); 637 void if_init(if_t ifp, void *ctx); 638 int if_ioctl(if_t ifp, u_long cmd, void *data); 639 int if_resolvemulti(if_t ifp, struct sockaddr **, struct sockaddr *); 640 uint64_t if_getcounter(if_t ifp, ift_counter counter); 641 struct label *if_getmaclabel(if_t ifp); 642 void if_setmaclabel(if_t ifp, struct label *label); 643 struct bpf_if *if_getbpf(if_t ifp); 644 uint8_t if_getpcp(if_t ifp); 645 void *if_getl2com(if_t ifp); 646 struct ifvlantrunk *if_getvlantrunk(if_t ifp); 647 bool if_altq_is_enabled(if_t ifp); 648 649 void *if_getafdata(if_t ifp, int); 650 651 int if_snd_tag_alloc(if_t ifp, union if_snd_tag_alloc_params *params, 652 struct m_snd_tag **mstp); 653 /* 654 * Traversing through interface address lists. 655 */ 656 struct sockaddr_dl; 657 typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 658 u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 659 u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 660 u_int if_lladdr_count(if_t); 661 u_int if_llmaddr_count(if_t); 662 bool if_maddr_empty(if_t); 663 664 int if_getamcount(const if_t ifp); 665 struct ifaddr * if_getifaddr(const if_t ifp); 666 typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 667 u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 668 669 typedef int (*if_foreach_cb_t)(if_t, void *); 670 typedef bool (*if_foreach_match_t)(if_t, void *); 671 int if_foreach(if_foreach_cb_t, void *); 672 int if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *); 673 674 /* Opaque iterator structure for iterating over interfaces. */ 675 struct if_iter { 676 void *context[4]; 677 }; 678 679 if_t if_iter_start(struct if_iter *); 680 if_t if_iter_next(struct if_iter *); 681 void if_iter_finish(struct if_iter *); 682 683 struct ifa_iter { 684 void *context[4]; 685 }; 686 687 struct ifaddr *ifa_iter_start(if_t ifp, struct ifa_iter *iter); 688 struct ifaddr *ifa_iter_next(struct ifa_iter *iter); 689 void ifa_iter_finish(struct ifa_iter *iter); 690 691 /* Functions */ 692 void if_setinitfn(if_t ifp, if_init_fn_t); 693 void if_setinputfn(if_t ifp, if_input_fn_t); 694 if_input_fn_t if_getinputfn(if_t ifp); 695 void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 696 void if_setoutputfn(if_t ifp, if_output_fn_t); 697 void if_setstartfn(if_t ifp, if_start_fn_t); 698 if_start_fn_t if_getstartfn(if_t ifp); 699 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 700 if_transmit_fn_t if_gettransmitfn(if_t ifp); 701 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 702 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 703 void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 704 void if_setdebugnet_methods(if_t, struct debugnet_methods *); 705 void if_setreassignfn(if_t ifp, if_reassign_fn_t); 706 void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); 707 708 /* TSO */ 709 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 710 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 711 712 /* accessors for struct ifreq */ 713 void *ifr_data_get_ptr(void *ifrp); 714 void *ifr_buffer_get_buffer(void *data); 715 size_t ifr_buffer_get_length(void *data); 716 717 int ifhwioctl(u_long, if_t, caddr_t, struct thread *); 718 719 #ifdef DEVICE_POLLING 720 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 721 722 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 723 int ether_poll_register(poll_handler_t *h, if_t ifp); 724 int ether_poll_deregister(if_t ifp); 725 #endif /* DEVICE_POLLING */ 726 727 #endif /* _KERNEL */ 728 729 #include <net/if_private.h> /* XXX: temporary until drivers converted. */ 730 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 731 732 #endif /* !_NET_IF_VAR_H_ */ 733