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 */ 33 34 #ifndef _NET_IF_VAR_H_ 35 #define _NET_IF_VAR_H_ 36 37 /* 38 * Structures defining a network interface, providing a packet 39 * transport mechanism (ala level 0 of the PUP protocols). 40 * 41 * Each interface accepts output datagrams of a specified maximum 42 * length, and provides higher level routines with input datagrams 43 * received from its medium. 44 * 45 * Output occurs when the routine if_output is called, with three parameters: 46 * (*ifp->if_output)(ifp, m, dst, ro) 47 * Here m is the mbuf chain to be sent and dst is the destination address. 48 * The output routine encapsulates the supplied datagram if necessary, 49 * and then transmits it on its medium. 50 * 51 * On input, each interface unwraps the data received by it, and either 52 * places it on the input queue of an internetwork datagram routine 53 * and posts the associated software interrupt, or passes the datagram to a raw 54 * packet input routine. 55 * 56 * Routines exist for locating interfaces by their addresses 57 * or for locating an interface on a certain network, as well as more general 58 * routing and gateway routines maintaining information used to locate 59 * interfaces. These routines live in the files if.c and route.c 60 */ 61 62 struct rtentry; /* 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 struct debugnet_methods; 72 73 #ifdef _KERNEL 74 #include <sys/_eventhandler.h> 75 #include <sys/mbuf.h> /* ifqueue only? */ 76 #include <sys/buf_ring.h> 77 #include <net/vnet.h> 78 #endif /* _KERNEL */ 79 #include <sys/ck.h> 80 #include <sys/counter.h> 81 #include <sys/epoch.h> 82 #include <sys/lock.h> /* XXX */ 83 #include <sys/mutex.h> /* struct ifqueue */ 84 #include <sys/rwlock.h> /* XXX */ 85 #include <sys/sx.h> /* XXX */ 86 #include <sys/_task.h> /* if_link_task */ 87 #define IF_DUNIT_NONE -1 88 89 #include <net/altq/if_altq.h> 90 91 CK_STAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 92 CK_STAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 93 CK_STAILQ_HEAD(ifmultihead, ifmultiaddr); 94 CK_STAILQ_HEAD(ifgrouphead, ifg_group); 95 96 #ifdef _KERNEL 97 VNET_DECLARE(struct pfil_head *, link_pfil_head); 98 #define V_link_pfil_head VNET(link_pfil_head) 99 #define PFIL_ETHER_NAME "ethernet" 100 101 #define HHOOK_IPSEC_INET 0 102 #define HHOOK_IPSEC_INET6 1 103 #define HHOOK_IPSEC_COUNT 2 104 VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]); 105 VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]); 106 #define V_ipsec_hhh_in VNET(ipsec_hhh_in) 107 #define V_ipsec_hhh_out VNET(ipsec_hhh_out) 108 #endif /* _KERNEL */ 109 110 typedef enum { 111 IFCOUNTER_IPACKETS = 0, 112 IFCOUNTER_IERRORS, 113 IFCOUNTER_OPACKETS, 114 IFCOUNTER_OERRORS, 115 IFCOUNTER_COLLISIONS, 116 IFCOUNTER_IBYTES, 117 IFCOUNTER_OBYTES, 118 IFCOUNTER_IMCASTS, 119 IFCOUNTER_OMCASTS, 120 IFCOUNTER_IQDROPS, 121 IFCOUNTER_OQDROPS, 122 IFCOUNTER_NOPROTO, 123 IFCOUNTERS /* Array size. */ 124 } ift_counter; 125 126 typedef void (*if_start_fn_t)(if_t); 127 typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 128 typedef void (*if_init_fn_t)(void *); 129 typedef void (*if_input_fn_t)(if_t, struct mbuf *); 130 typedef int (*if_output_fn_t)(if_t, struct mbuf *, const struct sockaddr *, 131 struct route *); 132 typedef void (*if_qflush_fn_t)(if_t); 133 typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 134 typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 135 typedef void (*if_reassign_fn_t)(if_t, struct vnet *, char *); 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)(if_t, 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)(if_t, 317 struct if_ratelimit_query_results *); 318 typedef int (if_ratelimit_setup_t)(if_t, 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 *, if_t); 334 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 335 /* interface address change event */ 336 typedef void (*ifaddr_event_handler_t)(void *, if_t); 337 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 338 typedef void (*ifaddr_event_ext_handler_t)(void *, if_t, struct ifaddr *, int); 339 EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); 340 #define IFADDR_EVENT_ADD 0 341 #define IFADDR_EVENT_DEL 1 342 /* new interface arrival event */ 343 typedef void (*ifnet_arrival_event_handler_t)(void *, if_t); 344 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 345 /* interface departure event */ 346 typedef void (*ifnet_departure_event_handler_t)(void *, if_t); 347 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 348 /* Interface link state change event */ 349 typedef void (*ifnet_link_event_handler_t)(void *, if_t, int); 350 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 351 /* Interface up/down event */ 352 #define IFNET_EVENT_UP 0 353 #define IFNET_EVENT_DOWN 1 354 #define IFNET_EVENT_PCP 2 /* priority code point, PCP */ 355 #define IFNET_EVENT_UPDATE_BAUDRATE 3 356 357 typedef void (*ifnet_event_fn)(void *, if_t ifp, int event); 358 EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 359 360 /* 361 * interface groups 362 */ 363 struct ifg_group { 364 char ifg_group[IFNAMSIZ]; 365 u_int ifg_refcnt; 366 void *ifg_pf_kif; 367 CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */ 368 CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */ 369 }; 370 371 struct ifg_member { 372 CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */ 373 if_t ifgm_ifp; 374 }; 375 376 struct ifg_list { 377 struct ifg_group *ifgl_group; 378 CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */ 379 }; 380 381 #ifdef _SYS_EVENTHANDLER_H_ 382 /* group attach event */ 383 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 384 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 385 /* group detach event */ 386 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 387 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 388 /* group change event */ 389 typedef void (*group_change_event_handler_t)(void *, const char *); 390 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 391 #endif /* _SYS_EVENTHANDLER_H_ */ 392 393 /* 394 * 72 was chosen below because it is the size of a TCP/IP 395 * header (40) + the minimum mss (32). 396 */ 397 #define IF_MINMTU 72 398 #define IF_MAXMTU 65535 399 400 #define TOEDEV(ifp) if_getllsoftc(ifp) 401 #define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) 402 403 /* 404 * The ifaddr structure contains information about one address 405 * of an interface. They are maintained by the different address families, 406 * are allocated and attached when an address is set, and are linked 407 * together so all addresses for an interface can be located. 408 * 409 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 410 * chunk of malloc'ed memory, where we store the three addresses 411 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 412 */ 413 struct ifaddr { 414 struct sockaddr *ifa_addr; /* address of interface */ 415 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 416 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 417 struct sockaddr *ifa_netmask; /* used to determine subnet */ 418 if_t ifa_ifp; /* back-pointer to interface */ 419 struct carp_softc *ifa_carp; /* pointer to CARP data */ 420 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 421 u_short ifa_flags; /* mostly rt_flags for cloning */ 422 #define IFA_ROUTE RTF_UP /* route installed */ 423 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 424 u_int ifa_refcnt; /* references to this structure */ 425 426 counter_u64_t ifa_ipackets; 427 counter_u64_t ifa_opackets; 428 counter_u64_t ifa_ibytes; 429 counter_u64_t ifa_obytes; 430 struct epoch_context ifa_epoch_ctx; 431 }; 432 433 struct ifaddr * ifa_alloc(size_t size, int flags); 434 void ifa_free(struct ifaddr *ifa); 435 void ifa_ref(struct ifaddr *ifa); 436 int __result_use_check ifa_try_ref(struct ifaddr *ifa); 437 438 /* 439 * Multicast address structure. This is analogous to the ifaddr 440 * structure except that it keeps track of multicast addresses. 441 */ 442 #define IFMA_F_ENQUEUED 0x1 443 struct ifmultiaddr { 444 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 445 struct sockaddr *ifma_addr; /* address this membership is for */ 446 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 447 if_t ifma_ifp; /* back-pointer to interface */ 448 u_int ifma_refcount; /* reference count */ 449 int ifma_flags; 450 void *ifma_protospec; /* protocol-specific state, if any */ 451 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 452 struct epoch_context ifma_epoch_ctx; 453 }; 454 455 extern struct sx ifnet_sxlock; 456 457 #define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 458 #define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 459 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 460 #define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 461 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 462 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 463 464 /* 465 * Look up an ifnet given its index. The returned value protected from 466 * being freed by the network epoch. The _ref variant also acquires a 467 * reference that must be freed using if_rele(). 468 */ 469 if_t ifnet_byindex(u_int); 470 if_t ifnet_byindex_ref(u_int); 471 472 /* 473 * ifnet_byindexgen() looks up ifnet by index and generation count, 474 * attempting to restore a weak pointer that had been stored across 475 * the epoch. 476 */ 477 if_t ifnet_byindexgen(uint16_t idx, uint16_t gen); 478 479 VNET_DECLARE(struct ifnethead, ifnet); 480 VNET_DECLARE(struct ifgrouphead, ifg_head); 481 VNET_DECLARE(if_t, loif); /* first loopback interface */ 482 483 #define V_ifnet VNET(ifnet) 484 #define V_ifg_head VNET(ifg_head) 485 #define V_loif VNET(loif) 486 487 #ifdef MCAST_VERBOSE 488 #define MCDPRINTF printf 489 #else 490 #define MCDPRINTF(...) 491 #endif 492 493 int if_addgroup(if_t, const char *); 494 int if_delgroup(if_t, const char *); 495 int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **); 496 int if_allmulti(if_t, int); 497 if_t if_alloc(u_char); 498 if_t if_alloc_dev(u_char, device_t dev); 499 void if_attach(if_t); 500 void if_dead(if_t); 501 int if_delmulti(if_t, struct sockaddr *); 502 void if_delmulti_ifma(struct ifmultiaddr *); 503 void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 504 void if_detach(if_t); 505 void if_purgeaddrs(if_t); 506 void if_delallmulti(if_t); 507 void if_down(if_t); 508 struct ifmultiaddr * 509 if_findmulti(if_t, const struct sockaddr *); 510 void if_freemulti(struct ifmultiaddr *ifma); 511 void if_free(if_t); 512 void if_initname(if_t, const char *, int); 513 void if_link_state_change(if_t, int); 514 int if_printf(if_t, const char *, ...) __printflike(2, 3); 515 int if_log(if_t, int, const char *, ...) __printflike(3, 4); 516 void if_ref(if_t); 517 void if_rele(if_t); 518 bool __result_use_check if_try_ref(if_t); 519 int if_setlladdr(if_t, const u_char *, int); 520 int if_tunnel_check_nesting(if_t, struct mbuf *, uint32_t, int); 521 void if_up(if_t); 522 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 523 int ifpromisc(if_t, int); 524 if_t ifunit(const char *); 525 if_t ifunit_ref(const char *); 526 527 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 528 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 529 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 530 531 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 532 int ifa_ifwithaddr_check(const struct sockaddr *); 533 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 534 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 535 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 536 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 537 const struct sockaddr *, u_int); 538 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, if_t); 539 int ifa_preferred(struct ifaddr *, struct ifaddr *); 540 541 int if_simloop(if_t ifp, struct mbuf *m, int af, int hlen); 542 543 typedef void *if_com_alloc_t(u_char type, if_t ifp); 544 typedef void if_com_free_t(void *com, u_char type); 545 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 546 void if_deregister_com_alloc(u_char type); 547 void if_data_copy(if_t, struct if_data *); 548 uint64_t if_get_counter_default(if_t, ift_counter); 549 void if_inc_counter(if_t, ift_counter, int64_t); 550 551 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 552 uint64_t if_getbaudrate(const if_t ifp); 553 int if_setcapabilities(if_t ifp, int capabilities); 554 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 555 int if_getcapabilities(const if_t ifp); 556 int if_togglecapenable(if_t ifp, int togglecap); 557 int if_setcapenable(if_t ifp, int capenable); 558 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 559 int if_getcapenable(const if_t ifp); 560 int if_setcapabilities2(if_t ifp, int capabilities); 561 int if_setcapabilities2bit(if_t ifp, int setbit, int clearbit); 562 int if_getcapabilities2(const if_t ifp); 563 int if_togglecapenable2(if_t ifp, int togglecap); 564 int if_setcapenable2(if_t ifp, int capenable); 565 int if_setcapenable2bit(if_t ifp, int setcap, int clearcap); 566 int if_getcapenable2(const if_t ifp); 567 int if_getdunit(const if_t ifp); 568 int if_getindex(const if_t ifp); 569 int if_getidxgen(const if_t ifp); 570 const char *if_getdname(const if_t ifp); 571 void if_setdname(if_t ifp, const char *name); 572 const char *if_name(if_t ifp); 573 int if_setname(if_t ifp, const char *name); 574 int if_rename(if_t ifp, char *new_name); 575 const char *if_getdescr(if_t ifp); 576 void if_setdescr(if_t ifp, char *descrbuf); 577 char *if_allocdescr(size_t sz, int malloc_flag); 578 void if_freedescr(char *descrbuf); 579 void if_setlastchange(if_t ifp); 580 int if_getalloctype(const if_t ifp); 581 int if_gettype(const if_t ifp); 582 int if_setdev(if_t ifp, void *dev); 583 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 584 int if_getdrvflags(const if_t ifp); 585 int if_setdrvflags(if_t ifp, int flags); 586 int if_getlinkstate(if_t ifp); 587 int if_clearhwassist(if_t ifp); 588 int if_sethwassistbits(if_t ifp, int toset, int toclear); 589 int if_sethwassist(if_t ifp, int hwassist_bit); 590 int if_gethwassist(const if_t ifp); 591 int if_togglehwassist(if_t ifp, int toggle_bits); 592 int if_setsoftc(if_t ifp, void *softc); 593 void *if_getsoftc(if_t ifp); 594 int if_setflags(if_t ifp, int flags); 595 void if_setllsoftc(if_t ifp, void *softc); 596 void *if_getllsoftc(if_t ifp); 597 u_int if_getfib(if_t ifp); 598 uint8_t if_getaddrlen(if_t ifp); 599 int if_gethwaddr(const if_t ifp, struct ifreq *); 600 const uint8_t *if_getbroadcastaddr(const if_t ifp); 601 void if_setbroadcastaddr(if_t ifp, const uint8_t *); 602 int if_setmtu(if_t ifp, int mtu); 603 int if_getmtu(const if_t ifp); 604 int if_getmtu_family(const if_t ifp, int family); 605 void if_notifymtu(if_t ifp); 606 int if_setflagbits(if_t ifp, int set, int clear); 607 int if_setflags(if_t ifp, int flags); 608 int if_getflags(const if_t ifp); 609 int if_getnumadomain(if_t ifp); 610 int if_sendq_empty(if_t ifp); 611 int if_setsendqready(if_t ifp); 612 int if_setsendqlen(if_t ifp, int tx_desc_count); 613 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 614 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 615 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 616 u_int if_gethwtsomax(const if_t ifp); 617 u_int if_gethwtsomaxsegcount(const if_t ifp); 618 u_int if_gethwtsomaxsegsize(const if_t ifp); 619 void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); 620 struct netmap_adapter *if_getnetmapadapter(if_t ifp); 621 void if_input(if_t ifp, struct mbuf* sendmp); 622 int if_sendq_prepend(if_t ifp, struct mbuf *m); 623 struct mbuf *if_dequeue(if_t ifp); 624 int if_setifheaderlen(if_t ifp, int len); 625 void if_setrcvif(struct mbuf *m, if_t ifp); 626 void if_setvtag(struct mbuf *m, u_int16_t tag); 627 u_int16_t if_getvtag(struct mbuf *m); 628 int if_vlantrunkinuse(if_t ifp); 629 caddr_t if_getlladdr(const if_t ifp); 630 struct vnet *if_getvnet(const if_t ifp); 631 void *if_gethandle(u_char); 632 void if_bpfmtap(if_t ifp, struct mbuf *m); 633 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 634 void if_vlancap(if_t ifp); 635 int if_transmit(if_t ifp, struct mbuf *m); 636 void if_init(if_t ifp, void *ctx); 637 int if_ioctl(if_t ifp, u_long cmd, void *data); 638 int if_resolvemulti(if_t ifp, struct sockaddr **, struct sockaddr *); 639 uint64_t if_getcounter(if_t ifp, ift_counter counter); 640 struct label *if_getmaclabel(if_t ifp); 641 void if_setmaclabel(if_t ifp, struct label *label); 642 struct bpf_if *if_getbpf(if_t ifp); 643 uint8_t if_getpcp(if_t ifp); 644 void *if_getl2com(if_t ifp); 645 struct ifvlantrunk *if_getvlantrunk(if_t ifp); 646 bool if_altq_is_enabled(if_t ifp); 647 648 void *if_getafdata(if_t ifp, int); 649 650 int if_snd_tag_alloc(if_t ifp, union if_snd_tag_alloc_params *params, 651 struct m_snd_tag **mstp); 652 /* 653 * Traversing through interface address lists. 654 */ 655 struct sockaddr_dl; 656 typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 657 u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 658 u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 659 u_int if_lladdr_count(if_t); 660 u_int if_llmaddr_count(if_t); 661 bool if_maddr_empty(if_t); 662 663 int if_getamcount(const if_t ifp); 664 struct ifaddr * if_getifaddr(const if_t ifp); 665 typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 666 u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 667 668 typedef int (*if_foreach_cb_t)(if_t, void *); 669 typedef bool (*if_foreach_match_t)(if_t, void *); 670 int if_foreach(if_foreach_cb_t, void *); 671 int if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *); 672 673 /* Opaque iterator structure for iterating over interfaces. */ 674 struct if_iter { 675 void *context[4]; 676 }; 677 678 if_t if_iter_start(struct if_iter *); 679 if_t if_iter_next(struct if_iter *); 680 void if_iter_finish(struct if_iter *); 681 682 struct ifa_iter { 683 void *context[4]; 684 }; 685 686 struct ifaddr *ifa_iter_start(if_t ifp, struct ifa_iter *iter); 687 struct ifaddr *ifa_iter_next(struct ifa_iter *iter); 688 void ifa_iter_finish(struct ifa_iter *iter); 689 690 /* Functions */ 691 void if_setinitfn(if_t ifp, if_init_fn_t); 692 void if_setinputfn(if_t ifp, if_input_fn_t); 693 if_input_fn_t if_getinputfn(if_t ifp); 694 void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 695 void if_setoutputfn(if_t ifp, if_output_fn_t); 696 void if_setstartfn(if_t ifp, if_start_fn_t); 697 if_start_fn_t if_getstartfn(if_t ifp); 698 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 699 if_transmit_fn_t if_gettransmitfn(if_t ifp); 700 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 701 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 702 void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 703 void if_setdebugnet_methods(if_t, struct debugnet_methods *); 704 void if_setreassignfn(if_t ifp, if_reassign_fn_t); 705 void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); 706 707 /* TSO */ 708 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 709 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 710 711 /* accessors for struct ifreq */ 712 void *ifr_data_get_ptr(void *ifrp); 713 void *ifr_buffer_get_buffer(void *data); 714 size_t ifr_buffer_get_length(void *data); 715 716 int ifhwioctl(u_long, if_t, caddr_t, struct thread *); 717 718 #ifdef DEVICE_POLLING 719 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 720 721 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 722 int ether_poll_register(poll_handler_t *h, if_t ifp); 723 int ether_poll_deregister(if_t ifp); 724 #endif /* DEVICE_POLLING */ 725 726 #endif /* _KERNEL */ 727 728 #include <net/if_private.h> /* XXX: temporary until drivers converted. */ 729 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 730 731 #endif /* !_NET_IF_VAR_H_ */ 732