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 typedef void (*if_reassign_fn_t)(struct ifnet *, 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)(struct ifnet *, 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)(struct ifnet *, 318 struct if_ratelimit_query_results *); 319 typedef int (if_ratelimit_setup_t)(struct ifnet *, 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 *, struct ifnet *); 335 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 336 /* interface address change event */ 337 typedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 338 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 339 typedef void (*ifaddr_event_ext_handler_t)(void *, struct ifnet *, 340 struct ifaddr *, int); 341 EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); 342 #define IFADDR_EVENT_ADD 0 343 #define IFADDR_EVENT_DEL 1 344 /* new interface arrival event */ 345 typedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 346 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 347 /* interface departure event */ 348 typedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 349 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 350 /* Interface link state change event */ 351 typedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 352 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 353 /* Interface up/down event */ 354 #define IFNET_EVENT_UP 0 355 #define IFNET_EVENT_DOWN 1 356 #define IFNET_EVENT_PCP 2 /* priority code point, PCP */ 357 #define IFNET_EVENT_UPDATE_BAUDRATE 3 358 359 typedef void (*ifnet_event_fn)(void *, struct ifnet *ifp, int event); 360 EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 361 362 /* 363 * interface groups 364 */ 365 struct ifg_group { 366 char ifg_group[IFNAMSIZ]; 367 u_int ifg_refcnt; 368 void *ifg_pf_kif; 369 CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */ 370 CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */ 371 }; 372 373 struct ifg_member { 374 CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */ 375 struct ifnet *ifgm_ifp; 376 }; 377 378 struct ifg_list { 379 struct ifg_group *ifgl_group; 380 CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */ 381 }; 382 383 #ifdef _SYS_EVENTHANDLER_H_ 384 /* group attach event */ 385 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 386 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 387 /* group detach event */ 388 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 389 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 390 /* group change event */ 391 typedef void (*group_change_event_handler_t)(void *, const char *); 392 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 393 #endif /* _SYS_EVENTHANDLER_H_ */ 394 395 #define IF_AFDATA_LOCK_INIT(ifp) \ 396 mtx_init(&(ifp)->if_afdata_lock, "if_afdata", NULL, MTX_DEF) 397 398 #define IF_AFDATA_WLOCK(ifp) mtx_lock(&(ifp)->if_afdata_lock) 399 #define IF_AFDATA_WUNLOCK(ifp) mtx_unlock(&(ifp)->if_afdata_lock) 400 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 401 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 402 #define IF_AFDATA_TRYLOCK(ifp) mtx_trylock(&(ifp)->if_afdata_lock) 403 #define IF_AFDATA_DESTROY(ifp) mtx_destroy(&(ifp)->if_afdata_lock) 404 405 #define IF_AFDATA_LOCK_ASSERT(ifp) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(ifp)->if_afdata_lock)) 406 #define IF_AFDATA_WLOCK_ASSERT(ifp) mtx_assert(&(ifp)->if_afdata_lock, MA_OWNED) 407 #define IF_AFDATA_UNLOCK_ASSERT(ifp) mtx_assert(&(ifp)->if_afdata_lock, MA_NOTOWNED) 408 409 /* 410 * 72 was chosen below because it is the size of a TCP/IP 411 * header (40) + the minimum mss (32). 412 */ 413 #define IF_MINMTU 72 414 #define IF_MAXMTU 65535 415 416 #define TOEDEV(ifp) if_getllsoftc(ifp) 417 #define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) 418 419 /* 420 * The ifaddr structure contains information about one address 421 * of an interface. They are maintained by the different address families, 422 * are allocated and attached when an address is set, and are linked 423 * together so all addresses for an interface can be located. 424 * 425 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 426 * chunk of malloc'ed memory, where we store the three addresses 427 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 428 */ 429 struct ifaddr { 430 struct sockaddr *ifa_addr; /* address of interface */ 431 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 432 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 433 struct sockaddr *ifa_netmask; /* used to determine subnet */ 434 struct ifnet *ifa_ifp; /* back-pointer to interface */ 435 struct carp_softc *ifa_carp; /* pointer to CARP data */ 436 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 437 u_short ifa_flags; /* mostly rt_flags for cloning */ 438 #define IFA_ROUTE RTF_UP /* route installed */ 439 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 440 u_int ifa_refcnt; /* references to this structure */ 441 442 counter_u64_t ifa_ipackets; 443 counter_u64_t ifa_opackets; 444 counter_u64_t ifa_ibytes; 445 counter_u64_t ifa_obytes; 446 struct epoch_context ifa_epoch_ctx; 447 }; 448 449 struct ifaddr * ifa_alloc(size_t size, int flags); 450 void ifa_free(struct ifaddr *ifa); 451 void ifa_ref(struct ifaddr *ifa); 452 int __result_use_check ifa_try_ref(struct ifaddr *ifa); 453 454 /* 455 * Multicast address structure. This is analogous to the ifaddr 456 * structure except that it keeps track of multicast addresses. 457 */ 458 #define IFMA_F_ENQUEUED 0x1 459 struct ifmultiaddr { 460 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 461 struct sockaddr *ifma_addr; /* address this membership is for */ 462 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 463 struct ifnet *ifma_ifp; /* back-pointer to interface */ 464 u_int ifma_refcount; /* reference count */ 465 int ifma_flags; 466 void *ifma_protospec; /* protocol-specific state, if any */ 467 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 468 struct epoch_context ifma_epoch_ctx; 469 }; 470 471 extern struct sx ifnet_sxlock; 472 473 #define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 474 #define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 475 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 476 #define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 477 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 478 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 479 480 /* 481 * Look up an ifnet given its index. The returned value protected from 482 * being freed by the network epoch. The _ref variant also acquires a 483 * reference that must be freed using if_rele(). 484 */ 485 struct ifnet *ifnet_byindex(u_int); 486 struct ifnet *ifnet_byindex_ref(u_int); 487 488 /* 489 * ifnet_byindexgen() looks up ifnet by index and generation count, 490 * attempting to restore a weak pointer that had been stored across 491 * the epoch. 492 */ 493 struct ifnet *ifnet_byindexgen(uint16_t idx, uint16_t gen); 494 495 VNET_DECLARE(struct ifnethead, ifnet); 496 VNET_DECLARE(struct ifgrouphead, ifg_head); 497 VNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 498 499 #define V_ifnet VNET(ifnet) 500 #define V_ifg_head VNET(ifg_head) 501 #define V_loif VNET(loif) 502 503 #ifdef MCAST_VERBOSE 504 #define MCDPRINTF printf 505 #else 506 #define MCDPRINTF(...) 507 #endif 508 509 int if_addgroup(struct ifnet *, const char *); 510 int if_delgroup(struct ifnet *, const char *); 511 int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 512 int if_allmulti(struct ifnet *, int); 513 struct ifnet* if_alloc(u_char); 514 struct ifnet* if_alloc_dev(u_char, device_t dev); 515 void if_attach(struct ifnet *); 516 void if_dead(struct ifnet *); 517 int if_delmulti(struct ifnet *, struct sockaddr *); 518 void if_delmulti_ifma(struct ifmultiaddr *); 519 void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 520 void if_detach(struct ifnet *); 521 void if_purgeaddrs(struct ifnet *); 522 void if_delallmulti(struct ifnet *); 523 void if_down(struct ifnet *); 524 struct ifmultiaddr * 525 if_findmulti(struct ifnet *, const struct sockaddr *); 526 void if_freemulti(struct ifmultiaddr *ifma); 527 void if_free(struct ifnet *); 528 void if_initname(struct ifnet *, const char *, int); 529 void if_link_state_change(struct ifnet *, int); 530 int if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 531 int if_log(struct ifnet *, int, const char *, ...) __printflike(3, 4); 532 void if_ref(struct ifnet *); 533 void if_rele(struct ifnet *); 534 bool __result_use_check if_try_ref(struct ifnet *); 535 int if_setlladdr(struct ifnet *, const u_char *, int); 536 int if_tunnel_check_nesting(struct ifnet *, struct mbuf *, uint32_t, int); 537 void if_up(struct ifnet *); 538 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 539 int ifpromisc(struct ifnet *, int); 540 struct ifnet *ifunit(const char *); 541 struct ifnet *ifunit_ref(const char *); 542 543 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 544 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 545 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 546 547 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 548 int ifa_ifwithaddr_check(const struct sockaddr *); 549 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 550 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 551 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 552 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 553 const struct sockaddr *, u_int); 554 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 555 int ifa_preferred(struct ifaddr *, struct ifaddr *); 556 557 int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 558 559 typedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 560 typedef void if_com_free_t(void *com, u_char type); 561 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 562 void if_deregister_com_alloc(u_char type); 563 void if_data_copy(struct ifnet *, struct if_data *); 564 uint64_t if_get_counter_default(struct ifnet *, ift_counter); 565 void if_inc_counter(struct ifnet *, ift_counter, int64_t); 566 567 #define IF_LLADDR(ifp) \ 568 LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 569 570 uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 571 uint64_t if_getbaudrate(const if_t ifp); 572 int if_setcapabilities(if_t ifp, int capabilities); 573 int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 574 int if_getcapabilities(const if_t ifp); 575 int if_togglecapenable(if_t ifp, int togglecap); 576 int if_setcapenable(if_t ifp, int capenable); 577 int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 578 int if_getcapenable(const if_t ifp); 579 int if_getdunit(const if_t ifp); 580 int if_getindex(const if_t ifp); 581 int if_getidxgen(const if_t ifp); 582 const char *if_getdname(const if_t ifp); 583 void if_setdname(if_t ifp, const char *name); 584 const char *if_name(if_t ifp); 585 int if_setname(if_t ifp, const char *name); 586 void if_setdescr(if_t ifp, char *descrbuf); 587 char *if_allocdescr(size_t sz, int malloc_flag); 588 void if_freedescr(char *descrbuf); 589 int if_getalloctype(const if_t ifp); 590 int if_gettype(const if_t ifp); 591 int if_setdev(if_t ifp, void *dev); 592 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 593 int if_getdrvflags(const if_t ifp); 594 int if_setdrvflags(if_t ifp, int flags); 595 int if_getlinkstate(if_t ifp); 596 int if_clearhwassist(if_t ifp); 597 int if_sethwassistbits(if_t ifp, int toset, int toclear); 598 int if_sethwassist(if_t ifp, int hwassist_bit); 599 int if_gethwassist(const if_t ifp); 600 int if_togglehwassist(if_t ifp, int toggle_bits); 601 int if_setsoftc(if_t ifp, void *softc); 602 void *if_getsoftc(if_t ifp); 603 int if_setflags(if_t ifp, int flags); 604 void if_setllsoftc(if_t ifp, void *softc); 605 void *if_getllsoftc(if_t ifp); 606 u_int if_getfib(if_t ifp); 607 int if_gethwaddr(const if_t ifp, struct ifreq *); 608 const uint8_t *if_getbroadcastaddr(const if_t ifp); 609 int if_setmtu(if_t ifp, int mtu); 610 int if_getmtu(const if_t ifp); 611 int if_getmtu_family(const if_t ifp, int family); 612 int if_setflagbits(if_t ifp, int set, int clear); 613 int if_setflags(if_t ifp, int flags); 614 int if_getflags(const if_t ifp); 615 int if_getnumadomain(if_t ifp); 616 int if_sendq_empty(if_t ifp); 617 int if_setsendqready(if_t ifp); 618 int if_setsendqlen(if_t ifp, int tx_desc_count); 619 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 620 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 621 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 622 u_int if_gethwtsomax(const if_t ifp); 623 u_int if_gethwtsomaxsegcount(const if_t ifp); 624 u_int if_gethwtsomaxsegsize(const if_t ifp); 625 void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); 626 struct netmap_adapter *if_getnetmapadapter(if_t ifp); 627 int if_input(if_t ifp, struct mbuf* sendmp); 628 int if_sendq_prepend(if_t ifp, struct mbuf *m); 629 struct mbuf *if_dequeue(if_t ifp); 630 int if_setifheaderlen(if_t ifp, int len); 631 void if_setrcvif(struct mbuf *m, if_t ifp); 632 void if_setvtag(struct mbuf *m, u_int16_t tag); 633 u_int16_t if_getvtag(struct mbuf *m); 634 int if_vlantrunkinuse(if_t ifp); 635 caddr_t if_getlladdr(const if_t ifp); 636 struct vnet *if_getvnet(const if_t ifp); 637 void *if_gethandle(u_char); 638 void if_bpfmtap(if_t ifp, struct mbuf *m); 639 void if_etherbpfmtap(if_t ifp, struct mbuf *m); 640 void if_vlancap(if_t ifp); 641 int if_transmit(if_t ifp, struct mbuf *m); 642 int if_init(if_t ifp, void *ctx); 643 uint64_t if_getcounter(if_t ifp, ift_counter counter); 644 struct label *if_getmaclabel(if_t ifp); 645 void if_setmaclabel(if_t ifp, struct label *label); 646 struct bpf_if *if_getbpf(if_t ifp); 647 uint8_t if_getpcp(if_t ifp); 648 void *if_getl2com(if_t ifp); 649 struct ifvlantrunk *if_getvlantrunk(if_t ifp); 650 bool if_altq_is_enabled(if_t ifp); 651 652 void *if_getafdata(if_t ifp, int); 653 654 int if_snd_tag_alloc(struct ifnet *ifp, union if_snd_tag_alloc_params *params, 655 struct m_snd_tag **mstp); 656 /* 657 * Traversing through interface address lists. 658 */ 659 struct sockaddr_dl; 660 typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 661 u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 662 u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 663 u_int if_lladdr_count(if_t); 664 u_int if_llmaddr_count(if_t); 665 666 int if_getamcount(const if_t ifp); 667 struct ifaddr * if_getifaddr(const if_t ifp); 668 typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 669 u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 670 671 typedef int (*if_foreach_cb_t)(if_t, void *); 672 int if_foreach(if_foreach_cb_t, void *); 673 674 /* Functions */ 675 void if_setinitfn(if_t ifp, if_init_fn_t); 676 void if_setinputfn(if_t ifp, if_input_fn_t); 677 if_input_fn_t if_getinputfn(if_t ifp); 678 void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 679 void if_setoutputfn(if_t ifp, if_output_fn_t); 680 void if_setstartfn(if_t ifp, if_start_fn_t); 681 if_start_fn_t if_getstartfn(if_t ifp); 682 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 683 if_transmit_fn_t if_gettransmitfn(if_t ifp); 684 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 685 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 686 void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 687 void if_setdebugnet_methods(struct ifnet *, struct debugnet_methods *); 688 void if_setreassignfn(if_t ifp, if_reassign_fn_t); 689 void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); 690 691 /* TSO */ 692 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 693 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 694 695 /* accessors for struct ifreq */ 696 void *ifr_data_get_ptr(void *ifrp); 697 void *ifr_buffer_get_buffer(void *data); 698 size_t ifr_buffer_get_length(void *data); 699 700 int ifhwioctl(u_long, struct ifnet *, caddr_t, struct thread *); 701 702 #ifdef DEVICE_POLLING 703 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 704 705 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 706 int ether_poll_register(poll_handler_t *h, if_t ifp); 707 int ether_poll_deregister(if_t ifp); 708 #endif /* DEVICE_POLLING */ 709 710 #endif /* _KERNEL */ 711 712 #include <net/if_private.h> /* XXX: temporary until drivers converted. */ 713 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 714 715 #endif /* !_NET_IF_VAR_H_ */ 716