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 60struct rtentry; /* ifa_rtrequest */ 61struct socket; 62struct carp_if; 63struct carp_softc; 64struct ifvlantrunk; 65struct route; /* if_output */ 66struct vnet; 67struct ifmedia; 68struct netmap_adapter; 69struct 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 89CK_STAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 90CK_STAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 91CK_STAILQ_HEAD(ifmultihead, ifmultiaddr); 92CK_STAILQ_HEAD(ifgrouphead, ifg_group); 93 94#ifdef _KERNEL 95VNET_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 102VNET_DECLARE(struct hhook_head *, ipsec_hhh_in[HHOOK_IPSEC_COUNT]); 103VNET_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 108typedef 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 124typedef void (*if_start_fn_t)(if_t); 125typedef int (*if_ioctl_fn_t)(if_t, u_long, caddr_t); 126typedef void (*if_init_fn_t)(void *); 127typedef void (*if_input_fn_t)(if_t, struct mbuf *); 128typedef int (*if_output_fn_t)(if_t, struct mbuf *, const struct sockaddr *, 129 struct route *); 130typedef void (*if_qflush_fn_t)(if_t); 131typedef int (*if_transmit_fn_t)(if_t, struct mbuf *); 132typedef uint64_t (*if_get_counter_t)(if_t, ift_counter); 133typedef void (*if_reassign_fn_t)(if_t, struct vnet *, char *); 134 135struct ifnet_hw_tsomax { 136 u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 137 u_int tsomaxsegcount; /* TSO maximum segment count */ 138 u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 139}; 140 141/* Interface encap request types */ 142typedef enum { 143 IFENCAP_LL = 1 /* pre-calculate link-layer header */ 144} ife_type; 145 146/* 147 * The structure below allows to request various pre-calculated L2/L3 headers 148 * for different media. Requests varies by type (rtype field). 149 * 150 * IFENCAP_LL type: pre-calculates link header based on address family 151 * and destination lladdr. 152 * 153 * Input data fields: 154 * buf: pointer to destination buffer 155 * bufsize: buffer size 156 * flags: IFENCAP_FLAG_BROADCAST if destination is broadcast 157 * family: address family defined by AF_ constant. 158 * lladdr: pointer to link-layer address 159 * lladdr_len: length of link-layer address 160 * hdata: pointer to L3 header (optional, used for ARP requests). 161 * Output data fields: 162 * buf: encap data is stored here 163 * bufsize: resulting encap length is stored here 164 * lladdr_off: offset of link-layer address from encap hdr start 165 * hdata: L3 header may be altered if necessary 166 */ 167 168struct if_encap_req { 169 u_char *buf; /* Destination buffer (w) */ 170 size_t bufsize; /* size of provided buffer (r) */ 171 ife_type rtype; /* request type (r) */ 172 uint32_t flags; /* Request flags (r) */ 173 int family; /* Address family AF_* (r) */ 174 int lladdr_off; /* offset from header start (w) */ 175 int lladdr_len; /* lladdr length (r) */ 176 char *lladdr; /* link-level address pointer (r) */ 177 char *hdata; /* Upper layer header data (rw) */ 178}; 179 180#define IFENCAP_FLAG_BROADCAST 0x02 /* Destination is broadcast */ 181 182/* 183 * Network interface send tag support. The storage of "struct 184 * m_snd_tag" comes from the network driver and it is free to allocate 185 * as much additional space as it wants for its own use. 186 */ 187struct ktls_session; 188struct m_snd_tag; 189 190#define IF_SND_TAG_TYPE_RATE_LIMIT 0 191#define IF_SND_TAG_TYPE_UNLIMITED 1 192#define IF_SND_TAG_TYPE_TLS 2 193#define IF_SND_TAG_TYPE_TLS_RATE_LIMIT 3 194#define IF_SND_TAG_TYPE_TLS_RX 4 195#define IF_SND_TAG_TYPE_MAX 5 196 197struct if_snd_tag_alloc_header { 198 uint32_t type; /* send tag type, see IF_SND_TAG_XXX */ 199 uint32_t flowid; /* mbuf hash value */ 200 uint32_t flowtype; /* mbuf hash type */ 201 uint8_t numa_domain; /* numa domain of associated inp */ 202}; 203 204struct if_snd_tag_alloc_rate_limit { 205 struct if_snd_tag_alloc_header hdr; 206 uint64_t max_rate; /* in bytes/s */ 207 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 208 uint32_t reserved; /* alignment */ 209}; 210 211struct if_snd_tag_alloc_tls { 212 struct if_snd_tag_alloc_header hdr; 213 struct inpcb *inp; 214 const struct ktls_session *tls; 215}; 216 217struct if_snd_tag_alloc_tls_rx { 218 struct if_snd_tag_alloc_header hdr; 219 struct inpcb *inp; 220 const struct ktls_session *tls; 221 uint16_t vlan_id; /* valid if non-zero */ 222}; 223 224struct if_snd_tag_alloc_tls_rate_limit { 225 struct if_snd_tag_alloc_header hdr; 226 struct inpcb *inp; 227 const struct ktls_session *tls; 228 uint64_t max_rate; /* in bytes/s */ 229}; 230 231struct if_snd_tag_rate_limit_params { 232 uint64_t max_rate; /* in bytes/s */ 233 uint32_t queue_level; /* 0 (empty) .. 65535 (full) */ 234#define IF_SND_QUEUE_LEVEL_MIN 0 235#define IF_SND_QUEUE_LEVEL_MAX 65535 236 uint32_t flags; /* M_NOWAIT or M_WAITOK */ 237}; 238 239struct if_snd_tag_modify_tls_rx { 240 /* TCP sequence number of TLS header in host endian format */ 241 uint32_t tls_hdr_tcp_sn; 242 243 /* 244 * TLS record length, including all headers, data and trailers. 245 * If the tls_rec_length is zero, it means HW encryption resumed. 246 */ 247 uint32_t tls_rec_length; 248 249 /* TLS sequence number in host endian format */ 250 uint64_t tls_seq_number; 251}; 252 253union if_snd_tag_alloc_params { 254 struct if_snd_tag_alloc_header hdr; 255 struct if_snd_tag_alloc_rate_limit rate_limit; 256 struct if_snd_tag_alloc_rate_limit unlimited; 257 struct if_snd_tag_alloc_tls tls; 258 struct if_snd_tag_alloc_tls_rx tls_rx; 259 struct if_snd_tag_alloc_tls_rate_limit tls_rate_limit; 260}; 261 262union if_snd_tag_modify_params { 263 struct if_snd_tag_rate_limit_params rate_limit; 264 struct if_snd_tag_rate_limit_params unlimited; 265 struct if_snd_tag_rate_limit_params tls_rate_limit; 266 struct if_snd_tag_modify_tls_rx tls_rx; 267}; 268 269union if_snd_tag_query_params { 270 struct if_snd_tag_rate_limit_params rate_limit; 271 struct if_snd_tag_rate_limit_params unlimited; 272 struct if_snd_tag_rate_limit_params tls_rate_limit; 273}; 274 275typedef int (if_snd_tag_alloc_t)(if_t, union if_snd_tag_alloc_params *, 276 struct m_snd_tag **); 277typedef int (if_snd_tag_modify_t)(struct m_snd_tag *, union if_snd_tag_modify_params *); 278typedef int (if_snd_tag_query_t)(struct m_snd_tag *, union if_snd_tag_query_params *); 279typedef void (if_snd_tag_free_t)(struct m_snd_tag *); 280typedef struct m_snd_tag *(if_next_send_tag_t)(struct m_snd_tag *); 281 282struct if_snd_tag_sw { 283 if_snd_tag_modify_t *snd_tag_modify; 284 if_snd_tag_query_t *snd_tag_query; 285 if_snd_tag_free_t *snd_tag_free; 286 if_next_send_tag_t *next_snd_tag; 287 u_int type; /* One of IF_SND_TAG_TYPE_*. */ 288}; 289 290/* Query return flags */ 291#define RT_NOSUPPORT 0x00000000 /* Not supported */ 292#define RT_IS_INDIRECT 0x00000001 /* 293 * Interface like a lagg, select 294 * the actual interface for 295 * capabilities. 296 */ 297#define RT_IS_SELECTABLE 0x00000002 /* 298 * No rate table, you select 299 * rates and the first 300 * number_of_rates are created. 301 */ 302#define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */ 303#define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */ 304#define RT_IS_SETUP_REQ 0x00000010 /* The interface setup must be called before use */ 305 306struct if_ratelimit_query_results { 307 const uint64_t *rate_table; /* Pointer to table if present */ 308 uint32_t flags; /* Flags indicating results */ 309 uint32_t max_flows; /* Max flows using, 0=unlimited */ 310 uint32_t number_of_rates; /* How many unique rates can be created */ 311 uint32_t min_segment_burst; /* The amount the adapter bursts at each send */ 312}; 313 314typedef void (if_ratelimit_query_t)(if_t, 315 struct if_ratelimit_query_results *); 316typedef int (if_ratelimit_setup_t)(if_t, uint64_t, uint32_t); 317#define IF_NODOM 255 318/* 319 * Locks for address lists on the network interface. 320 */ 321#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF) 322#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock) 323 324#define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock) 325#define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock) 326#define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock)) 327#define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED) 328 329#ifdef _KERNEL 330/* interface link layer address change event */ 331typedef void (*iflladdr_event_handler_t)(void *, if_t); 332EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 333/* interface address change event */ 334typedef void (*ifaddr_event_handler_t)(void *, if_t); 335EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 336typedef void (*ifaddr_event_ext_handler_t)(void *, if_t, struct ifaddr *, int); 337EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); 338#define IFADDR_EVENT_ADD 0 339#define IFADDR_EVENT_DEL 1 340/* new interface arrival event */ 341typedef void (*ifnet_arrival_event_handler_t)(void *, if_t); 342EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 343/* interface departure event */ 344typedef void (*ifnet_departure_event_handler_t)(void *, if_t); 345EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 346/* Interface link state change event */ 347typedef void (*ifnet_link_event_handler_t)(void *, if_t, int); 348EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 349/* Interface up/down event */ 350#define IFNET_EVENT_UP 0 351#define IFNET_EVENT_DOWN 1 352#define IFNET_EVENT_PCP 2 /* priority code point, PCP */ 353#define IFNET_EVENT_UPDATE_BAUDRATE 3 354 355typedef void (*ifnet_event_fn)(void *, if_t ifp, int event); 356EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 357 358/* 359 * interface groups 360 */ 361struct ifg_group { 362 char ifg_group[IFNAMSIZ]; 363 u_int ifg_refcnt; 364 void *ifg_pf_kif; 365 CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */ 366 CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */ 367}; 368 369struct ifg_member { 370 CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */ 371 if_t ifgm_ifp; 372}; 373 374struct ifg_list { 375 struct ifg_group *ifgl_group; 376 CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */ 377}; 378 379#ifdef _SYS_EVENTHANDLER_H_ 380/* group attach event */ 381typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 382EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 383/* group detach event */ 384typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 385EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 386/* group change event */ 387typedef void (*group_change_event_handler_t)(void *, const char *); 388EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 389#endif /* _SYS_EVENTHANDLER_H_ */ 390 391/* 392 * 72 was chosen below because it is the size of a TCP/IP 393 * header (40) + the minimum mss (32). 394 */ 395#define IF_MINMTU 72 396#define IF_MAXMTU 65535 397 398#define TOEDEV(ifp) if_getllsoftc(ifp) 399#define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) 400 401/* 402 * The ifaddr structure contains information about one address 403 * of an interface. They are maintained by the different address families, 404 * are allocated and attached when an address is set, and are linked 405 * together so all addresses for an interface can be located. 406 * 407 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 408 * chunk of malloc'ed memory, where we store the three addresses 409 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 410 */ 411struct ifaddr { 412 struct sockaddr *ifa_addr; /* address of interface */ 413 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 414#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 415 struct sockaddr *ifa_netmask; /* used to determine subnet */ 416 if_t ifa_ifp; /* back-pointer to interface */ 417 struct carp_softc *ifa_carp; /* pointer to CARP data */ 418 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 419 u_short ifa_flags; /* mostly rt_flags for cloning */ 420#define IFA_ROUTE RTF_UP /* route installed */ 421#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 422 u_int ifa_refcnt; /* references to this structure */ 423 424 counter_u64_t ifa_ipackets; 425 counter_u64_t ifa_opackets; 426 counter_u64_t ifa_ibytes; 427 counter_u64_t ifa_obytes; 428 struct epoch_context ifa_epoch_ctx; 429}; 430 431struct ifaddr * ifa_alloc(size_t size, int flags); 432void ifa_free(struct ifaddr *ifa); 433void ifa_ref(struct ifaddr *ifa); 434int __result_use_check ifa_try_ref(struct ifaddr *ifa); 435 436/* 437 * Multicast address structure. This is analogous to the ifaddr 438 * structure except that it keeps track of multicast addresses. 439 */ 440#define IFMA_F_ENQUEUED 0x1 441struct ifmultiaddr { 442 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 443 struct sockaddr *ifma_addr; /* address this membership is for */ 444 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 445 if_t ifma_ifp; /* back-pointer to interface */ 446 u_int ifma_refcount; /* reference count */ 447 int ifma_flags; 448 void *ifma_protospec; /* protocol-specific state, if any */ 449 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 450 struct epoch_context ifma_epoch_ctx; 451}; 452 453extern struct sx ifnet_sxlock; 454 455#define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 456#define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 457#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 458#define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 459#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 460#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 461 462/* 463 * Look up an ifnet given its index. The returned value protected from 464 * being freed by the network epoch. The _ref variant also acquires a 465 * reference that must be freed using if_rele(). 466 */ 467if_t ifnet_byindex(u_int); 468if_t ifnet_byindex_ref(u_int); 469 470/* 471 * ifnet_byindexgen() looks up ifnet by index and generation count, 472 * attempting to restore a weak pointer that had been stored across 473 * the epoch. 474 */ 475if_t ifnet_byindexgen(uint16_t idx, uint16_t gen); 476 477VNET_DECLARE(struct ifnethead, ifnet); 478VNET_DECLARE(struct ifgrouphead, ifg_head); 479VNET_DECLARE(if_t, loif); /* first loopback interface */ 480 481#define V_ifnet VNET(ifnet) 482#define V_ifg_head VNET(ifg_head) 483#define V_loif VNET(loif) 484 485#ifdef MCAST_VERBOSE 486#define MCDPRINTF printf 487#else 488#define MCDPRINTF(...) 489#endif 490 491int if_addgroup(if_t, const char *); 492int if_delgroup(if_t, const char *); 493int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **); 494int if_allmulti(if_t, int); 495if_t if_alloc(u_char); 496if_t if_alloc_dev(u_char, device_t dev); 497void if_attach(if_t); 498void if_dead(if_t); 499int if_delmulti(if_t, struct sockaddr *); 500void if_delmulti_ifma(struct ifmultiaddr *); 501void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 502void if_detach(if_t); 503void if_purgeaddrs(if_t); 504void if_delallmulti(if_t); 505void if_down(if_t); 506struct ifmultiaddr * 507 if_findmulti(if_t, const struct sockaddr *); 508void if_freemulti(struct ifmultiaddr *ifma); 509void if_free(if_t); 510void if_initname(if_t, const char *, int); 511void if_link_state_change(if_t, int); 512int if_printf(if_t, const char *, ...) __printflike(2, 3); 513int if_log(if_t, int, const char *, ...) __printflike(3, 4); 514void if_ref(if_t); 515void if_rele(if_t); 516bool __result_use_check if_try_ref(if_t); 517int if_setlladdr(if_t, const u_char *, int); 518int if_tunnel_check_nesting(if_t, struct mbuf *, uint32_t, int); 519void if_up(if_t); 520int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 521int ifpromisc(if_t, int); 522if_t ifunit(const char *); 523if_t ifunit_ref(const char *); 524 525int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 526int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 527int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 528 529struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 530int ifa_ifwithaddr_check(const struct sockaddr *); 531struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 532struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 533struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 534struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 535 const struct sockaddr *, u_int); 536struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, if_t); 537int ifa_preferred(struct ifaddr *, struct ifaddr *); 538 539int if_simloop(if_t ifp, struct mbuf *m, int af, int hlen); 540 541typedef void *if_com_alloc_t(u_char type, if_t ifp); 542typedef void if_com_free_t(void *com, u_char type); 543void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 544void if_deregister_com_alloc(u_char type); 545void if_data_copy(if_t, struct if_data *); 546uint64_t if_get_counter_default(if_t, ift_counter); 547void if_inc_counter(if_t, ift_counter, int64_t); 548 549uint64_t if_setbaudrate(if_t ifp, uint64_t baudrate); 550uint64_t if_getbaudrate(const if_t ifp); 551int if_setcapabilities(if_t ifp, int capabilities); 552int if_setcapabilitiesbit(if_t ifp, int setbit, int clearbit); 553int if_getcapabilities(const if_t ifp); 554int if_togglecapenable(if_t ifp, int togglecap); 555int if_setcapenable(if_t ifp, int capenable); 556int if_setcapenablebit(if_t ifp, int setcap, int clearcap); 557int if_getcapenable(const if_t ifp); 558int if_setcapabilities2(if_t ifp, int capabilities); 559int if_setcapabilities2bit(if_t ifp, int setbit, int clearbit); 560int if_getcapabilities2(const if_t ifp); 561int if_togglecapenable2(if_t ifp, int togglecap); 562int if_setcapenable2(if_t ifp, int capenable); 563int if_setcapenable2bit(if_t ifp, int setcap, int clearcap); 564int if_getcapenable2(const if_t ifp); 565int if_getdunit(const if_t ifp); 566int if_getindex(const if_t ifp); 567int if_getidxgen(const if_t ifp); 568const char *if_getdname(const if_t ifp); 569void if_setdname(if_t ifp, const char *name); 570const char *if_name(if_t ifp); 571int if_setname(if_t ifp, const char *name); 572int if_rename(if_t ifp, char *new_name); 573const char *if_getdescr(if_t ifp); 574void if_setdescr(if_t ifp, char *descrbuf); 575char *if_allocdescr(size_t sz, int malloc_flag); 576void if_freedescr(char *descrbuf); 577void if_setlastchange(if_t ifp); 578int if_getalloctype(const if_t ifp); 579int if_gettype(const if_t ifp); 580int if_setdev(if_t ifp, void *dev); 581int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 582int if_getdrvflags(const if_t ifp); 583int if_setdrvflags(if_t ifp, int flags); 584int if_getlinkstate(if_t ifp); 585int if_clearhwassist(if_t ifp); 586int if_sethwassistbits(if_t ifp, int toset, int toclear); 587int if_sethwassist(if_t ifp, int hwassist_bit); 588int if_gethwassist(const if_t ifp); 589int if_togglehwassist(if_t ifp, int toggle_bits); 590int if_setsoftc(if_t ifp, void *softc); 591void *if_getsoftc(if_t ifp); 592int if_setflags(if_t ifp, int flags); 593void if_setllsoftc(if_t ifp, void *softc); 594void *if_getllsoftc(if_t ifp); 595u_int if_getfib(if_t ifp); 596uint8_t if_getaddrlen(if_t ifp); 597int if_gethwaddr(const if_t ifp, struct ifreq *); 598const uint8_t *if_getbroadcastaddr(const if_t ifp); 599void if_setbroadcastaddr(if_t ifp, const uint8_t *); 600int if_setmtu(if_t ifp, int mtu); 601int if_getmtu(const if_t ifp); 602int if_getmtu_family(const if_t ifp, int family); 603void if_notifymtu(if_t ifp); 604int if_setflagbits(if_t ifp, int set, int clear); 605int if_setflags(if_t ifp, int flags); 606int if_getflags(const if_t ifp); 607int if_getnumadomain(if_t ifp); 608int if_sendq_empty(if_t ifp); 609int if_setsendqready(if_t ifp); 610int if_setsendqlen(if_t ifp, int tx_desc_count); 611int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 612int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 613int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 614u_int if_gethwtsomax(const if_t ifp); 615u_int if_gethwtsomaxsegcount(const if_t ifp); 616u_int if_gethwtsomaxsegsize(const if_t ifp); 617void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); 618struct netmap_adapter *if_getnetmapadapter(if_t ifp); 619void if_input(if_t ifp, struct mbuf* sendmp); 620int if_sendq_prepend(if_t ifp, struct mbuf *m); 621struct mbuf *if_dequeue(if_t ifp); 622int if_setifheaderlen(if_t ifp, int len); 623void if_setrcvif(struct mbuf *m, if_t ifp); 624void if_setvtag(struct mbuf *m, u_int16_t tag); 625u_int16_t if_getvtag(struct mbuf *m); 626int if_vlantrunkinuse(if_t ifp); 627caddr_t if_getlladdr(const if_t ifp); 628struct vnet *if_getvnet(const if_t ifp); 629void *if_gethandle(u_char); 630void if_vlancap(if_t ifp); 631int if_transmit(if_t ifp, struct mbuf *m); 632void if_init(if_t ifp, void *ctx); 633int if_ioctl(if_t ifp, u_long cmd, void *data); 634int if_resolvemulti(if_t ifp, struct sockaddr **, struct sockaddr *); 635uint64_t if_getcounter(if_t ifp, ift_counter counter); 636struct label *if_getmaclabel(if_t ifp); 637void if_setmaclabel(if_t ifp, struct label *label); 638struct bpf_if *if_getbpf(if_t ifp); 639uint8_t if_getpcp(if_t ifp); 640void *if_getl2com(if_t ifp); 641struct ifvlantrunk *if_getvlantrunk(if_t ifp); 642bool if_altq_is_enabled(if_t ifp); 643 644void *if_getafdata(if_t ifp, int); 645 646int if_snd_tag_alloc(if_t ifp, union if_snd_tag_alloc_params *params, 647 struct m_snd_tag **mstp); 648/* 649 * Traversing through interface address lists. 650 */ 651struct sockaddr_dl; 652typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 653u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 654u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 655u_int if_lladdr_count(if_t); 656u_int if_llmaddr_count(if_t); 657bool if_maddr_empty(if_t); 658 659int if_getamcount(const if_t ifp); 660struct ifaddr * if_getifaddr(const if_t ifp); 661typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 662u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 663 664typedef int (*if_foreach_cb_t)(if_t, void *); 665typedef bool (*if_foreach_match_t)(if_t, void *); 666int if_foreach(if_foreach_cb_t, void *); 667int if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *); 668 669/* Opaque iterator structure for iterating over interfaces. */ 670struct if_iter { 671 void *context[4]; 672}; 673 674if_t if_iter_start(struct if_iter *); 675if_t if_iter_next(struct if_iter *); 676void if_iter_finish(struct if_iter *); 677 678struct ifa_iter { 679 void *context[4]; 680}; 681 682struct ifaddr *ifa_iter_start(if_t ifp, struct ifa_iter *iter); 683struct ifaddr *ifa_iter_next(struct ifa_iter *iter); 684void ifa_iter_finish(struct ifa_iter *iter); 685 686/* Functions */ 687void if_setinitfn(if_t ifp, if_init_fn_t); 688void if_setinputfn(if_t ifp, if_input_fn_t); 689if_input_fn_t if_getinputfn(if_t ifp); 690void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 691void if_setoutputfn(if_t ifp, if_output_fn_t); 692void if_setstartfn(if_t ifp, if_start_fn_t); 693if_start_fn_t if_getstartfn(if_t ifp); 694void if_settransmitfn(if_t ifp, if_transmit_fn_t); 695if_transmit_fn_t if_gettransmitfn(if_t ifp); 696void if_setqflushfn(if_t ifp, if_qflush_fn_t); 697void if_setgetcounterfn(if_t ifp, if_get_counter_t); 698void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 699void if_setdebugnet_methods(if_t, struct debugnet_methods *); 700void if_setreassignfn(if_t ifp, if_reassign_fn_t); 701void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); 702 703/* TSO */ 704void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 705int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 706 707/* accessors for struct ifreq */ 708void *ifr_data_get_ptr(void *ifrp); 709void *ifr_buffer_get_buffer(void *data); 710size_t ifr_buffer_get_length(void *data); 711 712int ifhwioctl(u_long, if_t, caddr_t, struct thread *); 713 714#ifdef DEVICE_POLLING 715enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 716 717typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 718int ether_poll_register(poll_handler_t *h, if_t ifp); 719int ether_poll_deregister(if_t ifp); 720#endif /* DEVICE_POLLING */ 721 722#endif /* _KERNEL */ 723 724#include <net/if_private.h> /* XXX: temporary until drivers converted. */ 725#include <net/ifq.h> /* XXXAO: temporary unconditional include */ 726 727#endif /* !_NET_IF_VAR_H_ */ 728