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 32 #ifndef _NET_IF_VAR_H_ 33 #define _NET_IF_VAR_H_ 34 35 /* 36 * Structures defining a network interface, providing a packet 37 * transport mechanism (ala level 0 of the PUP protocols). 38 * 39 * Each interface accepts output datagrams of a specified maximum 40 * length, and provides higher level routines with input datagrams 41 * received from its medium. 42 * 43 * Output occurs when the routine if_output is called, with three parameters: 44 * (*ifp->if_output)(ifp, m, dst, ro) 45 * Here m is the mbuf chain to be sent and dst is the destination address. 46 * The output routine encapsulates the supplied datagram if necessary, 47 * and then transmits it on its medium. 48 * 49 * On input, each interface unwraps the data received by it, and either 50 * places it on the input queue of an internetwork datagram routine 51 * and posts the associated software interrupt, or passes the datagram to a raw 52 * packet input routine. 53 * 54 * Routines exist for locating interfaces by their addresses 55 * or for locating an interface on a certain network, as well as more general 56 * routing and gateway routines maintaining information used to locate 57 * interfaces. These routines live in the files if.c and route.c 58 */ 59 60 struct rtentry; /* ifa_rtrequest */ 61 struct socket; 62 struct carp_if; 63 struct carp_softc; 64 struct ifvlantrunk; 65 struct route; /* if_output */ 66 struct vnet; 67 struct ifmedia; 68 struct netmap_adapter; 69 struct debugnet_methods; 70 71 #ifdef _KERNEL 72 #include <sys/_eventhandler.h> 73 #include <sys/mbuf.h> /* ifqueue only? */ 74 #include <sys/buf_ring.h> 75 #include <net/vnet.h> 76 #endif /* _KERNEL */ 77 #include <sys/ck.h> 78 #include <sys/counter.h> 79 #include <sys/epoch.h> 80 #include <sys/lock.h> /* XXX */ 81 #include <sys/mutex.h> /* struct ifqueue */ 82 #include <sys/rwlock.h> /* XXX */ 83 #include <sys/sx.h> /* XXX */ 84 #include <sys/_task.h> /* if_link_task */ 85 #define IF_DUNIT_NONE -1 86 87 #include <net/altq/if_altq.h> 88 89 CK_STAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 90 CK_STAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 91 CK_STAILQ_HEAD(ifmultihead, ifmultiaddr); 92 CK_STAILQ_HEAD(ifgrouphead, ifg_group); 93 94 #ifdef _KERNEL 95 VNET_DECLARE(struct pfil_head *, link_pfil_head); 96 #define V_link_pfil_head VNET(link_pfil_head) 97 #define PFIL_ETHER_NAME "ethernet" 98 99 #define HHOOK_IPSEC_INET 0 100 #define HHOOK_IPSEC_INET6 1 101 #define HHOOK_IPSEC_COUNT 2 102 VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]); 103 VNET_DECLARE(struct hhook_head *, ipsec_hhh_out[HHOOK_IPSEC_COUNT]); 104 #define V_ipsec_hhh_in VNET(ipsec_hhh_in) 105 #define V_ipsec_hhh_out VNET(ipsec_hhh_out) 106 #endif /* _KERNEL */ 107 108 typedef enum { 109 IFCOUNTER_IPACKETS = 0, 110 IFCOUNTER_IERRORS, 111 IFCOUNTER_OPACKETS, 112 IFCOUNTER_OERRORS, 113 IFCOUNTER_COLLISIONS, 114 IFCOUNTER_IBYTES, 115 IFCOUNTER_OBYTES, 116 IFCOUNTER_IMCASTS, 117 IFCOUNTER_OMCASTS, 118 IFCOUNTER_IQDROPS, 119 IFCOUNTER_OQDROPS, 120 IFCOUNTER_NOPROTO, 121 IFCOUNTERS /* Array size. */ 122 } ift_counter; 123 124 typedef void (*if_start_fn_t)(if_t); 125 typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 126 typedef void (*if_init_fn_t)(void *); 127 typedef void (*if_input_fn_t)(if_t, struct mbuf *); 128 typedef int (*if_output_fn_t)(if_t, struct mbuf *, const struct sockaddr *, 129 struct route *); 130 typedef void (*if_qflush_fn_t)(if_t); 131 typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 132 typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 133 typedef void (*if_reassign_fn_t)(if_t, struct vnet *, char *); 134 typedef int (*if_spdadd_fn_t)(if_t ifp, void *sp, void *inp, void **priv); 135 typedef int (*if_spddel_fn_t)(if_t ifp, void *sp, void *priv); 136 typedef int (*if_sa_newkey_fn_t)(if_t ifp, void *sav, u_int drv_spi, 137 void **privp); 138 typedef int (*if_sa_deinstall_fn_t)(if_t ifp, u_int drv_spi, void *priv); 139 struct seclifetime; 140 #define IF_SA_CNT_UPD 0x80000000 141 enum IF_SA_CNT_WHICH { 142 IF_SA_CNT_IFP_HW_VAL = 1, 143 IF_SA_CNT_TOTAL_SW_VAL, 144 IF_SA_CNT_TOTAL_HW_VAL, 145 IF_SA_CNT_IFP_HW_UPD = IF_SA_CNT_IFP_HW_VAL | IF_SA_CNT_UPD, 146 IF_SA_CNT_TOTAL_SW_UPD = IF_SA_CNT_TOTAL_SW_VAL | IF_SA_CNT_UPD, 147 IF_SA_CNT_TOTAL_HW_UPD = IF_SA_CNT_TOTAL_HW_VAL | IF_SA_CNT_UPD, 148 }; 149 typedef int (*if_sa_cnt_fn_t)(if_t ifp, void *sa, 150 uint32_t drv_spi, void *priv, struct seclifetime *lt); 151 typedef int (*if_ipsec_hwassist_fn_t)(if_t ifp, void *sav, 152 u_int drv_spi,void *priv); 153 154 struct ifnet_hw_tsomax { 155 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 156 u_int tsomaxsegcount; /* TSO maximum segment count */ 157 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 158 }; 159 160 /* Interface encap request types */ 161 typedef enum { 162 IFENCAP_LL = 1 /* pre-calculate link-layer header */ 163 } ife_type; 164 165 /* 166 * The structure below allows to request various pre-calculated L2/L3 headers 167 * for different media. Requests varies by type (rtype field). 168 * 169 * IFENCAP_LL type: pre-calculates link header based on address family 170 * and destination lladdr. 171 * 172 * Input data fields: 173 * buf: pointer to destination buffer 174 * bufsize: buffer size 175 * flags: IFENCAP_FLAG_BROADCAST if destination is broadcast 176 * family: address family defined by AF_ constant. 177 * lladdr: pointer to link-layer address 178 * lladdr_len: length of link-layer address 179 * hdata: pointer to L3 header (optional, used for ARP requests). 180 * Output data fields: 181 * buf: encap data is stored here 182 * bufsize: resulting encap length is stored here 183 * lladdr_off: offset of link-layer address from encap hdr start 184 * hdata: L3 header may be altered if necessary 185 */ 186 187 struct if_encap_req { 188 u_char *buf; /* Destination buffer (w) */ 189 size_t bufsize; /* size of provided buffer (r) */ 190 ife_type rtype; /* request type (r) */ 191 uint32_t flags; /* Request flags (r) */ 192 int family; /* Address family AF_* (r) */ 193 int lladdr_off; /* offset from header start (w) */ 194 int lladdr_len; /* lladdr length (r) */ 195 char *lladdr; /* link-level address pointer (r) */ 196 char *hdata; /* Upper layer header data (rw) */ 197 }; 198 199 #define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */ 200 201 /* 202 * Network interface send tag support. The storage of "struct 203 * m_snd_tag" comes from the network driver and it is free to allocate 204 * as much additional space as it wants for its own use. 205 */ 206 struct ktls_session; 207 struct m_snd_tag; 208 209 #define IF_SND_TAG_TYPE_RATE_LIMIT 0 210 #define IF_SND_TAG_TYPE_UNLIMITED 1 211 #define IF_SND_TAG_TYPE_TLS 2 212 #define IF_SND_TAG_TYPE_TLS_RATE_LIMIT 3 213 #define IF_SND_TAG_TYPE_TLS_RX 4 214 #define IF_SND_TAG_TYPE_MAX 5 215 216 struct if_snd_tag_alloc_header { 217 uint32_t type; /* send tag type, see IF_SND_TAG_XXX */ 218 uint32_t flowid; /* mbuf hash value */ 219 uint32_t flowtype; /* mbuf hash type */ 220 uint8_t numa_domain; /* numa domain of associated inp */ 221 }; 222 223 struct if_snd_tag_alloc_rate_limit { 224 struct if_snd_tag_alloc_header hdr; 225 uint64_t max_rate; /* in bytes/s */ 226 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 227 uint32_t reserved; /* alignment */ 228 }; 229 230 struct if_snd_tag_alloc_tls { 231 struct if_snd_tag_alloc_header hdr; 232 struct inpcb *inp; 233 const struct ktls_session *tls; 234 }; 235 236 struct if_snd_tag_alloc_tls_rx { 237 struct if_snd_tag_alloc_header hdr; 238 struct inpcb *inp; 239 const struct ktls_session *tls; 240 uint16_t vlan_id; /* valid if non-zero */ 241 }; 242 243 struct if_snd_tag_alloc_tls_rate_limit { 244 struct if_snd_tag_alloc_header hdr; 245 struct inpcb *inp; 246 const struct ktls_session *tls; 247 uint64_t max_rate; /* in bytes/s */ 248 }; 249 250 struct if_snd_tag_rate_limit_params { 251 uint64_t max_rate; /* in bytes/s */ 252 uint32_t queue_level; /* 0 (empty) .. 65535 (full) */ 253 #define IF_SND_QUEUE_LEVEL_MIN 0 254 #define IF_SND_QUEUE_LEVEL_MAX 65535 255 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 256 }; 257 258 struct if_snd_tag_modify_tls_rx { 259 /* TCP sequence number of TLS header in host endian format */ 260 uint32_t tls_hdr_tcp_sn; 261 262 /* 263 * TLS record length, including all headers, data and trailers. 264 * If the tls_rec_length is zero, it means HW encryption resumed. 265 */ 266 uint32_t tls_rec_length; 267 268 /* TLS sequence number in host endian format */ 269 uint64_t tls_seq_number; 270 }; 271 272 union if_snd_tag_alloc_params { 273 struct if_snd_tag_alloc_header hdr; 274 struct if_snd_tag_alloc_rate_limit rate_limit; 275 struct if_snd_tag_alloc_rate_limit unlimited; 276 struct if_snd_tag_alloc_tls tls; 277 struct if_snd_tag_alloc_tls_rx tls_rx; 278 struct if_snd_tag_alloc_tls_rate_limit tls_rate_limit; 279 }; 280 281 union if_snd_tag_modify_params { 282 struct if_snd_tag_rate_limit_params rate_limit; 283 struct if_snd_tag_rate_limit_params unlimited; 284 struct if_snd_tag_rate_limit_params tls_rate_limit; 285 struct if_snd_tag_modify_tls_rx tls_rx; 286 }; 287 288 union if_snd_tag_query_params { 289 struct if_snd_tag_rate_limit_params rate_limit; 290 struct if_snd_tag_rate_limit_params unlimited; 291 struct if_snd_tag_rate_limit_params tls_rate_limit; 292 }; 293 294 typedef int (if_snd_tag_alloc_t)(if_t, union if_snd_tag_alloc_params *, 295 struct m_snd_tag **); 296 typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *); 297 typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *); 298 typedef void (if_snd_tag_free_t)(struct m_snd_tag *); 299 typedef struct m_snd_tag *(if_next_send_tag_t)(struct m_snd_tag *); 300 301 struct if_snd_tag_sw { 302 if_snd_tag_modify_t *snd_tag_modify; 303 if_snd_tag_query_t *snd_tag_query; 304 if_snd_tag_free_t *snd_tag_free; 305 if_next_send_tag_t *next_snd_tag; 306 u_int type; /* One of IF_SND_TAG_TYPE_*. */ 307 }; 308 309 /* Query return flags */ 310 #define RT_NOSUPPORT 0x00000000 /* Not supported */ 311 #define RT_IS_INDIRECT 0x00000001 /* 312 * Interface like a lagg, select 313 * the actual interface for 314 * capabilities. 315 */ 316 #define RT_IS_SELECTABLE 0x00000002 /* 317 * No rate table, you select 318 * rates and the first 319 * number_of_rates are created. 320 */ 321 #define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */ 322 #define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */ 323 #define RT_IS_SETUP_REQ 0x00000010 /* The interface setup must be called before use */ 324 325 struct if_ratelimit_query_results { 326 const uint64_t *rate_table; /* Pointer to table if present */ 327 uint32_t flags; /* Flags indicating results */ 328 uint32_t max_flows; /* Max flows using, 0=unlimited */ 329 uint32_t number_of_rates; /* How many unique rates can be created */ 330 uint32_t min_segment_burst; /* The amount the adapter bursts at each send */ 331 }; 332 333 typedef void (if_ratelimit_query_t)(if_t, 334 struct if_ratelimit_query_results *); 335 typedef int (if_ratelimit_setup_t)(if_t, uint64_t, uint32_t); 336 #define IF_NODOM 255 337 /* 338 * Locks for address lists on the network interface. 339 */ 340 #define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF) 341 #define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock) 342 343 #define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock) 344 #define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock) 345 #define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock)) 346 #define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED) 347 348 #ifdef _KERNEL 349 /* interface link layer address change event */ 350 typedef void (*iflladdr_event_handler_t)(void *, if_t); 351 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 352 /* interface address change event */ 353 typedef void (*ifaddr_event_handler_t)(void *, if_t); 354 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 355 typedef void (*ifaddr_event_ext_handler_t)(void *, if_t, struct ifaddr *, int); 356 EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); 357 #define IFADDR_EVENT_ADD 0 358 #define IFADDR_EVENT_DEL 1 359 /* new interface arrival event */ 360 typedef void (*ifnet_arrival_event_handler_t)(void *, if_t); 361 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 362 /* interface departure event */ 363 typedef void (*ifnet_departure_event_handler_t)(void *, if_t); 364 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 365 /* Interface link state change event */ 366 typedef void (*ifnet_link_event_handler_t)(void *, if_t, int); 367 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 368 /* Interface up/down event */ 369 #define IFNET_EVENT_UP 0 370 #define IFNET_EVENT_DOWN 1 371 #define IFNET_EVENT_PCP 2 /* priority code point, PCP */ 372 #define IFNET_EVENT_UPDATE_BAUDRATE 3 373 374 typedef void (*ifnet_event_fn)(void *, if_t ifp, int event); 375 EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 376 377 /* 378 * interface groups 379 */ 380 struct ifg_group { 381 char ifg_group[IFNAMSIZ]; 382 u_int ifg_refcnt; 383 void *ifg_pf_kif; 384 CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */ 385 CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */ 386 }; 387 388 struct ifg_member { 389 CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */ 390 if_t ifgm_ifp; 391 }; 392 393 struct ifg_list { 394 struct ifg_group *ifgl_group; 395 CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */ 396 }; 397 398 #ifdef _SYS_EVENTHANDLER_H_ 399 /* group attach event */ 400 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 401 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 402 /* group detach event */ 403 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 404 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 405 /* group change event */ 406 typedef void (*group_change_event_handler_t)(void *, const char *); 407 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 408 #endif /* _SYS_EVENTHANDLER_H_ */ 409 410 /* 411 * 72 was chosen below because it is the size of a TCP/IP 412 * header (40) + the minimum mss (32). 413 */ 414 #define IF_MINMTU 72 415 #define IF_MAXMTU 65535 416 417 #define TOEDEV(ifp) if_getllsoftc(ifp) 418 #define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) 419 420 /* 421 * The ifaddr structure contains information about one address 422 * of an interface. They are maintained by the different address families, 423 * are allocated and attached when an address is set, and are linked 424 * together so all addresses for an interface can be located. 425 * 426 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 427 * chunk of malloc'ed memory, where we store the three addresses 428 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 429 */ 430 struct ifaddr { 431 struct sockaddr *ifa_addr; /* address of interface */ 432 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 433 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 434 struct sockaddr *ifa_netmask; /* used to determine subnet */ 435 if_t ifa_ifp; /* back-pointer to interface */ 436 struct carp_softc *ifa_carp; /* pointer to CARP data */ 437 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 438 u_short ifa_flags; /* mostly rt_flags for cloning */ 439 #define IFA_ROUTE RTF_UP /* route installed */ 440 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 441 u_int ifa_refcnt; /* references to this structure */ 442 443 counter_u64_t ifa_ipackets; 444 counter_u64_t ifa_opackets; 445 counter_u64_t ifa_ibytes; 446 counter_u64_t ifa_obytes; 447 struct epoch_context ifa_epoch_ctx; 448 }; 449 450 struct ifaddr * ifa_alloc(size_t size, int flags); 451 void ifa_free(struct ifaddr *ifa); 452 void ifa_ref(struct ifaddr *ifa); 453 int __result_use_check ifa_try_ref(struct ifaddr *ifa); 454 455 /* 456 * Multicast address structure. This is analogous to the ifaddr 457 * structure except that it keeps track of multicast addresses. 458 */ 459 #define IFMA_F_ENQUEUED 0x1 460 struct ifmultiaddr { 461 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 462 struct sockaddr *ifma_addr; /* address this membership is for */ 463 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 464 if_t ifma_ifp; /* back-pointer to interface */ 465 u_int ifma_refcount; /* reference count */ 466 int ifma_flags; 467 void *ifma_protospec; /* protocol-specific state, if any */ 468 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 469 struct epoch_context ifma_epoch_ctx; 470 }; 471 472 extern struct sx ifnet_sxlock; 473 474 #define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 475 #define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 476 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 477 #define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 478 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 479 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 480 481 /* 482 * Look up an ifnet given its index. The returned value protected from 483 * being freed by the network epoch. The _ref variant also acquires a 484 * reference that must be freed using if_rele(). 485 */ 486 if_t ifnet_byindex(u_int); 487 if_t ifnet_byindex_ref(u_int); 488 489 /* 490 * ifnet_byindexgen() looks up ifnet by index and generation count, 491 * attempting to restore a weak pointer that had been stored across 492 * the epoch. 493 */ 494 if_t ifnet_byindexgen(uint16_t idx, uint16_t gen); 495 496 VNET_DECLARE(struct ifnethead, ifnet); 497 VNET_DECLARE(struct ifgrouphead, ifg_head); 498 VNET_DECLARE(if_t, loif); /* first loopback interface */ 499 500 #define V_ifnet VNET(ifnet) 501 #define V_ifg_head VNET(ifg_head) 502 #define V_loif VNET(loif) 503 504 #ifdef MCAST_VERBOSE 505 #define MCDPRINTF printf 506 #else 507 #define MCDPRINTF(...) 508 #endif 509 510 int if_addgroup(if_t, const char *); 511 int if_delgroup(if_t, const char *); 512 int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **); 513 int if_allmulti(if_t, int); 514 if_t if_alloc(u_char); 515 if_t if_alloc_dev(u_char, device_t dev); 516 void if_attach(if_t); 517 void if_dead(if_t); 518 int if_delmulti(if_t, struct sockaddr *); 519 void if_delmulti_ifma(struct ifmultiaddr *); 520 void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 521 void if_detach(if_t); 522 void if_purgeaddrs(if_t); 523 void if_delallmulti(if_t); 524 void if_down(if_t); 525 struct ifmultiaddr * 526 if_findmulti(if_t, const struct sockaddr *); 527 void if_freemulti(struct ifmultiaddr *ifma); 528 void if_free(if_t); 529 void if_initname(if_t, const char *, int); 530 void if_link_state_change(if_t, int); 531 int if_printf(if_t, const char *, ...) __printflike(2, 3); 532 int if_log(if_t, int, const char *, ...) __printflike(3, 4); 533 void if_ref(if_t); 534 void if_rele(if_t); 535 bool __result_use_check if_try_ref(if_t); 536 int if_setlladdr(if_t, const u_char *, int); 537 int if_tunnel_check_nesting(if_t, struct mbuf *, uint32_t, int); 538 void if_up(if_t); 539 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 540 int ifpromisc(if_t, int); 541 if_t ifunit(const char *); 542 if_t ifunit_ref(const char *); 543 544 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 545 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 546 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 547 548 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 549 int ifa_ifwithaddr_check(const struct sockaddr *); 550 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 551 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 552 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 553 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 554 const struct sockaddr *, u_int); 555 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, if_t); 556 int ifa_preferred(struct ifaddr *, struct ifaddr *); 557 558 int if_simloop(if_t ifp, struct mbuf *m, int af, int hlen); 559 560 typedef void *if_com_alloc_t(u_char type, if_t ifp); 561 typedef void if_com_free_t(void *com, u_char type); 562 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 563 void if_deregister_com_alloc(u_char type); 564 void if_data_copy(if_t, struct if_data *); 565 uint64_t if_get_counter_default(if_t, ift_counter); 566 void if_inc_counter(if_t, ift_counter, int64_t); 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_setcapabilities2(if_t ifp, int capabilities); 578 int if_setcapabilities2bit(if_t ifp, int setbit, int clearbit); 579 int if_getcapabilities2(const if_t ifp); 580 int if_togglecapenable2(if_t ifp, int togglecap); 581 int if_setcapenable2(if_t ifp, int capenable); 582 int if_setcapenable2bit(if_t ifp, int setcap, int clearcap); 583 int if_getcapenable2(const if_t ifp); 584 int if_getdunit(const if_t ifp); 585 int if_getindex(const if_t ifp); 586 int if_getidxgen(const if_t ifp); 587 const char *if_getdname(const if_t ifp); 588 void if_setdname(if_t ifp, const char *name); 589 const char *if_name(if_t ifp); 590 int if_setname(if_t ifp, const char *name); 591 int if_rename(if_t ifp, char *new_name); 592 const char *if_getdescr(if_t ifp); 593 void if_setdescr(if_t ifp, char *descrbuf); 594 char *if_allocdescr(size_t sz, int malloc_flag); 595 void if_freedescr(char *descrbuf); 596 void if_setlastchange(if_t ifp); 597 int if_getalloctype(const if_t ifp); 598 int if_gettype(const if_t ifp); 599 int if_setdev(if_t ifp, void *dev); 600 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 601 int if_getdrvflags(const if_t ifp); 602 int if_setdrvflags(if_t ifp, int flags); 603 int if_getlinkstate(if_t ifp); 604 int if_clearhwassist(if_t ifp); 605 int if_sethwassistbits(if_t ifp, int toset, int toclear); 606 int if_sethwassist(if_t ifp, int hwassist_bit); 607 int if_gethwassist(const if_t ifp); 608 int if_togglehwassist(if_t ifp, int toggle_bits); 609 int if_setsoftc(if_t ifp, void *softc); 610 void *if_getsoftc(if_t ifp); 611 int if_setflags(if_t ifp, int flags); 612 void if_setllsoftc(if_t ifp, void *softc); 613 void *if_getllsoftc(if_t ifp); 614 u_int if_getfib(if_t ifp); 615 uint8_t if_getaddrlen(if_t ifp); 616 int if_gethwaddr(const if_t ifp, struct ifreq *); 617 const uint8_t *if_getbroadcastaddr(const if_t ifp); 618 void if_setbroadcastaddr(if_t ifp, const uint8_t *); 619 int if_setmtu(if_t ifp, int mtu); 620 int if_getmtu(const if_t ifp); 621 int if_getmtu_family(const if_t ifp, int family); 622 void if_notifymtu(if_t ifp); 623 int if_setflagbits(if_t ifp, int set, int clear); 624 int if_setflags(if_t ifp, int flags); 625 int if_getflags(const if_t ifp); 626 int if_getnumadomain(if_t ifp); 627 int if_sendq_empty(if_t ifp); 628 int if_setsendqready(if_t ifp); 629 int if_setsendqlen(if_t ifp, int tx_desc_count); 630 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 631 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 632 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 633 u_int if_gethwtsomax(const if_t ifp); 634 u_int if_gethwtsomaxsegcount(const if_t ifp); 635 u_int if_gethwtsomaxsegsize(const if_t ifp); 636 void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); 637 struct netmap_adapter *if_getnetmapadapter(if_t ifp); 638 void if_input(if_t ifp, struct mbuf* sendmp); 639 int if_sendq_prepend(if_t ifp, struct mbuf *m); 640 struct mbuf *if_dequeue(if_t ifp); 641 int if_setifheaderlen(if_t ifp, int len); 642 void if_setrcvif(struct mbuf *m, if_t ifp); 643 void if_setvtag(struct mbuf *m, u_int16_t tag); 644 u_int16_t if_getvtag(struct mbuf *m); 645 int if_vlantrunkinuse(if_t ifp); 646 char *if_getlladdr(const if_t ifp); 647 struct vnet *if_getvnet(const if_t ifp); 648 void *if_gethandle(u_char); 649 void if_vlancap(if_t ifp); 650 int if_transmit(if_t ifp, struct mbuf *m); 651 void if_init(if_t ifp, void *ctx); 652 int if_ioctl(if_t ifp, u_long cmd, void *data); 653 int if_resolvemulti(if_t ifp, struct sockaddr **, struct sockaddr *); 654 uint64_t if_getcounter(if_t ifp, ift_counter counter); 655 struct label *if_getmaclabel(if_t ifp); 656 void if_setmaclabel(if_t ifp, struct label *label); 657 struct bpf_if *if_getbpf(if_t ifp); 658 uint8_t if_getpcp(if_t ifp); 659 void *if_getl2com(if_t ifp); 660 struct ifvlantrunk *if_getvlantrunk(if_t ifp); 661 bool if_altq_is_enabled(if_t ifp); 662 663 void *if_getafdata(if_t ifp, int); 664 665 int if_snd_tag_alloc(if_t ifp, union if_snd_tag_alloc_params *params, 666 struct m_snd_tag **mstp); 667 /* 668 * Traversing through interface address lists. 669 */ 670 struct sockaddr_dl; 671 typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 672 u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 673 u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 674 u_int if_lladdr_count(if_t); 675 u_int if_llmaddr_count(if_t); 676 bool if_maddr_empty(if_t); 677 678 struct ifaddr * if_getifaddr(const if_t ifp); 679 typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 680 u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 681 682 typedef int (*if_foreach_cb_t)(if_t, void *); 683 typedef bool (*if_foreach_match_t)(if_t, void *); 684 int if_foreach(if_foreach_cb_t, void *); 685 int if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *); 686 687 /* Opaque iterator structure for iterating over interfaces. */ 688 struct if_iter { 689 void *context[4]; 690 }; 691 692 if_t if_iter_start(struct if_iter *); 693 if_t if_iter_next(struct if_iter *); 694 void if_iter_finish(struct if_iter *); 695 696 struct ifa_iter { 697 void *context[4]; 698 }; 699 700 struct ifaddr *ifa_iter_start(if_t ifp, struct ifa_iter *iter); 701 struct ifaddr *ifa_iter_next(struct ifa_iter *iter); 702 void ifa_iter_finish(struct ifa_iter *iter); 703 704 /* Functions */ 705 void if_setinitfn(if_t ifp, if_init_fn_t); 706 void if_setinputfn(if_t ifp, if_input_fn_t); 707 if_input_fn_t if_getinputfn(if_t ifp); 708 void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 709 void if_setoutputfn(if_t ifp, if_output_fn_t); 710 void if_setstartfn(if_t ifp, if_start_fn_t); 711 if_start_fn_t if_getstartfn(if_t ifp); 712 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 713 if_transmit_fn_t if_gettransmitfn(if_t ifp); 714 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 715 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 716 void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 717 void if_setdebugnet_methods(if_t, struct debugnet_methods *); 718 void if_setreassignfn(if_t ifp, if_reassign_fn_t); 719 void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); 720 721 /* 722 * NB: The interface is not yet stable, drivers implementing IPSEC 723 * offload need to be prepared to adapt to changes. 724 */ 725 struct if_ipsec_accel_methods { 726 if_spdadd_fn_t if_spdadd; 727 if_spddel_fn_t if_spddel; 728 if_sa_newkey_fn_t if_sa_newkey; 729 if_sa_deinstall_fn_t if_sa_deinstall; 730 if_sa_cnt_fn_t if_sa_cnt; 731 if_ipsec_hwassist_fn_t if_hwassist; 732 }; 733 void if_setipsec_accel_methods(if_t ifp, const struct if_ipsec_accel_methods *); 734 735 /* TSO */ 736 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 737 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 738 739 /* accessors for struct ifreq */ 740 void *ifr_data_get_ptr(void *ifrp); 741 void *ifr_buffer_get_buffer(void *data); 742 size_t ifr_buffer_get_length(void *data); 743 744 int ifhwioctl(u_long, if_t, caddr_t, struct thread *); 745 746 #ifdef DEVICE_POLLING 747 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 748 749 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 750 int ether_poll_register(poll_handler_t *h, if_t ifp); 751 int ether_poll_deregister(if_t ifp); 752 #endif /* DEVICE_POLLING */ 753 754 #endif /* _KERNEL */ 755 756 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 757 758 #endif /* !_NET_IF_VAR_H_ */ 759