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 typedef int (if_snd_tag_status_str_t)(struct m_snd_tag *, char *buf, size_t *sz); 301 302 struct if_snd_tag_sw { 303 if_snd_tag_modify_t *snd_tag_modify; 304 if_snd_tag_query_t *snd_tag_query; 305 if_snd_tag_free_t *snd_tag_free; 306 if_next_send_tag_t *next_snd_tag; 307 if_snd_tag_status_str_t *snd_tag_status_str; 308 u_int type; /* One of IF_SND_TAG_TYPE_*. */ 309 }; 310 311 /* Query return flags */ 312 #define RT_NOSUPPORT 0x00000000 /* Not supported */ 313 #define RT_IS_INDIRECT 0x00000001 /* 314 * Interface like a lagg, select 315 * the actual interface for 316 * capabilities. 317 */ 318 #define RT_IS_SELECTABLE 0x00000002 /* 319 * No rate table, you select 320 * rates and the first 321 * number_of_rates are created. 322 */ 323 #define RT_IS_FIXED_TABLE 0x00000004 /* A fixed table is attached */ 324 #define RT_IS_UNUSABLE 0x00000008 /* It is not usable for this */ 325 #define RT_IS_SETUP_REQ 0x00000010 /* The interface setup must be called before use */ 326 327 struct if_ratelimit_query_results { 328 const uint64_t *rate_table; /* Pointer to table if present */ 329 uint32_t flags; /* Flags indicating results */ 330 uint32_t max_flows; /* Max flows using, 0=unlimited */ 331 uint32_t number_of_rates; /* How many unique rates can be created */ 332 uint32_t min_segment_burst; /* The amount the adapter bursts at each send */ 333 }; 334 335 typedef void (if_ratelimit_query_t)(if_t, 336 struct if_ratelimit_query_results *); 337 typedef int (if_ratelimit_setup_t)(if_t, uint64_t, uint32_t); 338 #define IF_NODOM 255 339 /* 340 * Locks for address lists on the network interface. 341 */ 342 #define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_lock, "if_addr_lock", NULL, MTX_DEF) 343 #define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_lock) 344 345 #define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_lock) 346 #define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_lock) 347 #define IF_ADDR_LOCK_ASSERT(if) MPASS(in_epoch(net_epoch_preempt) || mtx_owned(&(if)->if_addr_lock)) 348 #define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_lock, MA_OWNED) 349 350 #ifdef _KERNEL 351 /* interface link layer address change event */ 352 typedef void (*iflladdr_event_handler_t)(void *, if_t); 353 EVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 354 /* interface address change event */ 355 typedef void (*ifaddr_event_handler_t)(void *, if_t); 356 EVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 357 typedef void (*ifaddr_event_ext_handler_t)(void *, if_t, struct ifaddr *, int); 358 EVENTHANDLER_DECLARE(ifaddr_event_ext, ifaddr_event_ext_handler_t); 359 #define IFADDR_EVENT_ADD 0 360 #define IFADDR_EVENT_DEL 1 361 /* new interface arrival event */ 362 typedef void (*ifnet_arrival_event_handler_t)(void *, if_t); 363 EVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 364 /* interface departure event */ 365 typedef void (*ifnet_departure_event_handler_t)(void *, if_t); 366 EVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 367 /* Interface link state change event */ 368 typedef void (*ifnet_link_event_handler_t)(void *, if_t, int); 369 EVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 370 /* Interface up/down event */ 371 #define IFNET_EVENT_UP 0 372 #define IFNET_EVENT_DOWN 1 373 #define IFNET_EVENT_PCP 2 /* priority code point, PCP */ 374 #define IFNET_EVENT_UPDATE_BAUDRATE 3 375 376 typedef void (*ifnet_event_fn)(void *, if_t ifp, int event); 377 EVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 378 379 /* 380 * interface groups 381 */ 382 struct ifg_group { 383 char ifg_group[IFNAMSIZ]; 384 u_int ifg_refcnt; 385 void *ifg_pf_kif; 386 CK_STAILQ_HEAD(, ifg_member) ifg_members; /* (CK_) */ 387 CK_STAILQ_ENTRY(ifg_group) ifg_next; /* (CK_) */ 388 }; 389 390 struct ifg_member { 391 CK_STAILQ_ENTRY(ifg_member) ifgm_next; /* (CK_) */ 392 if_t ifgm_ifp; 393 }; 394 395 struct ifg_list { 396 struct ifg_group *ifgl_group; 397 CK_STAILQ_ENTRY(ifg_list) ifgl_next; /* (CK_) */ 398 }; 399 400 #ifdef _SYS_EVENTHANDLER_H_ 401 /* group attach event */ 402 typedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 403 EVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 404 /* group detach event */ 405 typedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 406 EVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 407 /* group change event */ 408 typedef void (*group_change_event_handler_t)(void *, const char *); 409 EVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 410 #endif /* _SYS_EVENTHANDLER_H_ */ 411 412 /* 413 * 72 was chosen below because it is the size of a TCP/IP 414 * header (40) + the minimum mss (32). 415 */ 416 #define IF_MINMTU 72 417 #define IF_MAXMTU 65535 418 419 #define TOEDEV(ifp) if_getllsoftc(ifp) 420 #define SETTOEDEV(ifp, sc) if_setllsoftc((ifp), (sc)) 421 422 /* 423 * The ifaddr structure contains information about one address 424 * of an interface. They are maintained by the different address families, 425 * are allocated and attached when an address is set, and are linked 426 * together so all addresses for an interface can be located. 427 * 428 * NOTE: a 'struct ifaddr' is always at the beginning of a larger 429 * chunk of malloc'ed memory, where we store the three addresses 430 * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 431 */ 432 struct ifaddr { 433 struct sockaddr *ifa_addr; /* address of interface */ 434 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 435 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 436 struct sockaddr *ifa_netmask; /* used to determine subnet */ 437 if_t ifa_ifp; /* back-pointer to interface */ 438 struct carp_softc *ifa_carp; /* pointer to CARP data */ 439 CK_STAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 440 u_short ifa_flags; /* mostly rt_flags for cloning */ 441 #define IFA_ROUTE RTF_UP /* route installed */ 442 #define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 443 u_int ifa_refcnt; /* references to this structure */ 444 445 counter_u64_t ifa_ipackets; 446 counter_u64_t ifa_opackets; 447 counter_u64_t ifa_ibytes; 448 counter_u64_t ifa_obytes; 449 struct epoch_context ifa_epoch_ctx; 450 }; 451 452 struct ifaddr * ifa_alloc(size_t size, int flags); 453 void ifa_free(struct ifaddr *ifa); 454 void ifa_ref(struct ifaddr *ifa); 455 int __result_use_check ifa_try_ref(struct ifaddr *ifa); 456 457 /* 458 * Multicast address structure. This is analogous to the ifaddr 459 * structure except that it keeps track of multicast addresses. 460 */ 461 #define IFMA_F_ENQUEUED 0x1 462 struct ifmultiaddr { 463 CK_STAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 464 struct sockaddr *ifma_addr; /* address this membership is for */ 465 struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 466 if_t ifma_ifp; /* back-pointer to interface */ 467 u_int ifma_refcount; /* reference count */ 468 int ifma_flags; 469 void *ifma_protospec; /* protocol-specific state, if any */ 470 struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 471 struct epoch_context ifma_epoch_ctx; 472 }; 473 474 extern struct sx ifnet_sxlock; 475 476 #define IFNET_WLOCK() sx_xlock(&ifnet_sxlock) 477 #define IFNET_WUNLOCK() sx_xunlock(&ifnet_sxlock) 478 #define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 479 #define IFNET_WLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_XLOCKED) 480 #define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 481 #define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 482 483 /* 484 * Look up an ifnet given its index. The returned value protected from 485 * being freed by the network epoch. The _ref variant also acquires a 486 * reference that must be freed using if_rele(). 487 */ 488 if_t ifnet_byindex(u_int); 489 if_t ifnet_byindex_ref(u_int); 490 491 /* 492 * ifnet_byindexgen() looks up ifnet by index and generation count, 493 * attempting to restore a weak pointer that had been stored across 494 * the epoch. 495 */ 496 if_t ifnet_byindexgen(uint16_t idx, uint16_t gen); 497 498 VNET_DECLARE(struct ifnethead, ifnet); 499 VNET_DECLARE(struct ifgrouphead, ifg_head); 500 VNET_DECLARE(if_t, loif); /* first loopback interface */ 501 502 #define V_ifnet VNET(ifnet) 503 #define V_ifg_head VNET(ifg_head) 504 #define V_loif VNET(loif) 505 506 #ifdef MCAST_VERBOSE 507 #define MCDPRINTF printf 508 #else 509 #define MCDPRINTF(...) 510 #endif 511 512 int if_addgroup(if_t, const char *); 513 int if_delgroup(if_t, const char *); 514 int if_addmulti(if_t, struct sockaddr *, struct ifmultiaddr **); 515 int if_allmulti(if_t, int); 516 if_t if_alloc(u_char); 517 if_t if_alloc_dev(u_char, device_t dev); 518 void if_attach(if_t); 519 void if_dead(if_t); 520 int if_delmulti(if_t, struct sockaddr *); 521 void if_delmulti_ifma(struct ifmultiaddr *); 522 void if_delmulti_ifma_flags(struct ifmultiaddr *, int flags); 523 void if_detach(if_t); 524 void if_purgeaddrs(if_t); 525 void if_delallmulti(if_t); 526 void if_down(if_t); 527 struct ifmultiaddr * 528 if_findmulti(if_t, const struct sockaddr *); 529 void if_freemulti(struct ifmultiaddr *ifma); 530 void if_free(if_t); 531 void if_initname(if_t, const char *, int); 532 void if_link_state_change(if_t, int); 533 int if_printf(if_t, const char *, ...) __printflike(2, 3); 534 int if_log(if_t, int, const char *, ...) __printflike(3, 4); 535 void if_ref(if_t); 536 void if_rele(if_t); 537 bool __result_use_check if_try_ref(if_t); 538 int if_setlladdr(if_t, const u_char *, int); 539 int if_tunnel_check_nesting(if_t, struct mbuf *, uint32_t, int); 540 void if_up(if_t); 541 int ifioctl(struct socket *, u_long, caddr_t, struct thread *); 542 int ifpromisc(if_t, int); 543 if_t ifunit(const char *); 544 if_t ifunit_ref(const char *); 545 546 int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 547 int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 548 int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *); 549 550 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 551 int ifa_ifwithaddr_check(const struct sockaddr *); 552 struct ifaddr *ifa_ifwithbroadaddr(const struct sockaddr *, int); 553 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *, int); 554 struct ifaddr *ifa_ifwithnet(const struct sockaddr *, int, int); 555 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 556 const struct sockaddr *, u_int); 557 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, if_t); 558 int ifa_preferred(struct ifaddr *, struct ifaddr *); 559 560 int if_simloop(if_t ifp, struct mbuf *m, int af, int hlen); 561 562 typedef void *if_com_alloc_t(u_char type, if_t ifp); 563 typedef void if_com_free_t(void *com, u_char type); 564 void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 565 void if_deregister_com_alloc(u_char type); 566 void if_data_copy(if_t, struct if_data *); 567 uint64_t if_get_counter_default(if_t, ift_counter); 568 void if_inc_counter(if_t, ift_counter, int64_t); 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_setcapabilities2(if_t ifp, int capabilities); 580 int if_setcapabilities2bit(if_t ifp, int setbit, int clearbit); 581 int if_getcapabilities2(const if_t ifp); 582 int if_togglecapenable2(if_t ifp, int togglecap); 583 int if_setcapenable2(if_t ifp, int capenable); 584 int if_setcapenable2bit(if_t ifp, int setcap, int clearcap); 585 int if_getcapenable2(const if_t ifp); 586 int if_getdunit(const if_t ifp); 587 int if_getindex(const if_t ifp); 588 int if_getidxgen(const if_t ifp); 589 const char *if_getdname(const if_t ifp); 590 void if_setdname(if_t ifp, const char *name); 591 const char *if_name(if_t ifp); 592 int if_setname(if_t ifp, const char *name); 593 int if_rename(if_t ifp, char *new_name); 594 const char *if_getdescr(if_t ifp); 595 void if_setdescr(if_t ifp, char *descrbuf); 596 char *if_allocdescr(size_t sz, int malloc_flag); 597 void if_freedescr(char *descrbuf); 598 void if_setlastchange(if_t ifp); 599 int if_getalloctype(const if_t ifp); 600 int if_gettype(const if_t ifp); 601 int if_setdev(if_t ifp, void *dev); 602 int if_setdrvflagbits(if_t ifp, int if_setflags, int clear_flags); 603 int if_getdrvflags(const if_t ifp); 604 int if_setdrvflags(if_t ifp, int flags); 605 int if_getlinkstate(if_t ifp); 606 int if_clearhwassist(if_t ifp); 607 int if_sethwassistbits(if_t ifp, int toset, int toclear); 608 int if_sethwassist(if_t ifp, int hwassist_bit); 609 int if_gethwassist(const if_t ifp); 610 int if_togglehwassist(if_t ifp, int toggle_bits); 611 int if_setsoftc(if_t ifp, void *softc); 612 void *if_getsoftc(if_t ifp); 613 int if_setflags(if_t ifp, int flags); 614 void if_setllsoftc(if_t ifp, void *softc); 615 void *if_getllsoftc(if_t ifp); 616 u_int if_getfib(if_t ifp); 617 uint8_t if_getaddrlen(if_t ifp); 618 int if_gethwaddr(const if_t ifp, struct ifreq *); 619 const uint8_t *if_getbroadcastaddr(const if_t ifp); 620 void if_setbroadcastaddr(if_t ifp, const uint8_t *); 621 int if_setmtu(if_t ifp, int mtu); 622 int if_getmtu(const if_t ifp); 623 int if_getmtu_family(const if_t ifp, int family); 624 void if_notifymtu(if_t ifp); 625 int if_setflagbits(if_t ifp, int set, int clear); 626 int if_setflags(if_t ifp, int flags); 627 int if_getflags(const if_t ifp); 628 int if_getnumadomain(if_t ifp); 629 int if_sendq_empty(if_t ifp); 630 int if_setsendqready(if_t ifp); 631 int if_setsendqlen(if_t ifp, int tx_desc_count); 632 int if_sethwtsomax(if_t ifp, u_int if_hw_tsomax); 633 int if_sethwtsomaxsegcount(if_t ifp, u_int if_hw_tsomaxsegcount); 634 int if_sethwtsomaxsegsize(if_t ifp, u_int if_hw_tsomaxsegsize); 635 u_int if_gethwtsomax(const if_t ifp); 636 u_int if_gethwtsomaxsegcount(const if_t ifp); 637 u_int if_gethwtsomaxsegsize(const if_t ifp); 638 void if_setnetmapadapter(if_t ifp, struct netmap_adapter *na); 639 struct netmap_adapter *if_getnetmapadapter(if_t ifp); 640 void if_input(if_t ifp, struct mbuf* sendmp); 641 int if_sendq_prepend(if_t ifp, struct mbuf *m); 642 struct mbuf *if_dequeue(if_t ifp); 643 int if_setifheaderlen(if_t ifp, int len); 644 void if_setrcvif(struct mbuf *m, if_t ifp); 645 void if_setvtag(struct mbuf *m, u_int16_t tag); 646 u_int16_t if_getvtag(struct mbuf *m); 647 int if_vlantrunkinuse(if_t ifp); 648 char *if_getlladdr(const if_t ifp); 649 struct vnet *if_getvnet(const if_t ifp); 650 void *if_gethandle(u_char); 651 void if_vlancap(if_t ifp); 652 int if_transmit(if_t ifp, struct mbuf *m); 653 void if_init(if_t ifp, void *ctx); 654 int if_ioctl(if_t ifp, u_long cmd, void *data); 655 int if_resolvemulti(if_t ifp, struct sockaddr **, struct sockaddr *); 656 uint64_t if_getcounter(if_t ifp, ift_counter counter); 657 struct label *if_getmaclabel(if_t ifp); 658 void if_setmaclabel(if_t ifp, struct label *label); 659 struct bpf_if *if_getbpf(if_t ifp); 660 uint8_t if_getpcp(if_t ifp); 661 void *if_getl2com(if_t ifp); 662 struct ifvlantrunk *if_getvlantrunk(if_t ifp); 663 bool if_altq_is_enabled(if_t ifp); 664 665 void *if_getafdata(if_t ifp, int); 666 667 int if_snd_tag_alloc(if_t ifp, union if_snd_tag_alloc_params *params, 668 struct m_snd_tag **mstp); 669 /* 670 * Traversing through interface address lists. 671 */ 672 struct sockaddr_dl; 673 typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int); 674 u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *); 675 u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *); 676 u_int if_lladdr_count(if_t); 677 u_int if_llmaddr_count(if_t); 678 bool if_maddr_empty(if_t); 679 680 struct ifaddr * if_getifaddr(const if_t ifp); 681 typedef u_int if_addr_cb_t(void *, struct ifaddr *, u_int); 682 u_int if_foreach_addr_type(if_t ifp, int type, if_addr_cb_t cb, void *cb_arg); 683 684 typedef int (*if_foreach_cb_t)(if_t, void *); 685 typedef bool (*if_foreach_match_t)(if_t, void *); 686 int if_foreach(if_foreach_cb_t, void *); 687 int if_foreach_sleep(if_foreach_match_t, void *, if_foreach_cb_t, void *); 688 689 /* Opaque iterator structure for iterating over interfaces. */ 690 struct if_iter { 691 void *context[4]; 692 }; 693 694 if_t if_iter_start(struct if_iter *); 695 if_t if_iter_next(struct if_iter *); 696 void if_iter_finish(struct if_iter *); 697 698 struct ifa_iter { 699 void *context[4]; 700 }; 701 702 struct ifaddr *ifa_iter_start(if_t ifp, struct ifa_iter *iter); 703 struct ifaddr *ifa_iter_next(struct ifa_iter *iter); 704 void ifa_iter_finish(struct ifa_iter *iter); 705 706 /* Functions */ 707 void if_setinitfn(if_t ifp, if_init_fn_t); 708 void if_setinputfn(if_t ifp, if_input_fn_t); 709 if_input_fn_t if_getinputfn(if_t ifp); 710 void if_setioctlfn(if_t ifp, if_ioctl_fn_t); 711 void if_setoutputfn(if_t ifp, if_output_fn_t); 712 void if_setstartfn(if_t ifp, if_start_fn_t); 713 if_start_fn_t if_getstartfn(if_t ifp); 714 void if_settransmitfn(if_t ifp, if_transmit_fn_t); 715 if_transmit_fn_t if_gettransmitfn(if_t ifp); 716 void if_setqflushfn(if_t ifp, if_qflush_fn_t); 717 void if_setgetcounterfn(if_t ifp, if_get_counter_t); 718 void if_setsndtagallocfn(if_t ifp, if_snd_tag_alloc_t); 719 void if_setdebugnet_methods(if_t, struct debugnet_methods *); 720 void if_setreassignfn(if_t ifp, if_reassign_fn_t); 721 void if_setratelimitqueryfn(if_t ifp, if_ratelimit_query_t); 722 723 /* 724 * NB: The interface is not yet stable, drivers implementing IPSEC 725 * offload need to be prepared to adapt to changes. 726 */ 727 struct if_ipsec_accel_methods { 728 if_spdadd_fn_t if_spdadd; 729 if_spddel_fn_t if_spddel; 730 if_sa_newkey_fn_t if_sa_newkey; 731 if_sa_deinstall_fn_t if_sa_deinstall; 732 if_sa_cnt_fn_t if_sa_cnt; 733 if_ipsec_hwassist_fn_t if_hwassist; 734 }; 735 void if_setipsec_accel_methods(if_t ifp, const struct if_ipsec_accel_methods *); 736 737 /* TSO */ 738 void if_hw_tsomax_common(if_t ifp, struct ifnet_hw_tsomax *); 739 int if_hw_tsomax_update(if_t ifp, struct ifnet_hw_tsomax *); 740 741 /* accessors for struct ifreq */ 742 void *ifr_data_get_ptr(void *ifrp); 743 void *ifr_buffer_get_buffer(void *data); 744 size_t ifr_buffer_get_length(void *data); 745 746 int ifhwioctl(u_long, if_t, caddr_t, struct thread *); 747 748 #ifdef DEVICE_POLLING 749 enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 750 751 typedef int poll_handler_t(if_t ifp, enum poll_cmd cmd, int count); 752 int ether_poll_register(poll_handler_t *h, if_t ifp); 753 int ether_poll_deregister(if_t ifp); 754 #endif /* DEVICE_POLLING */ 755 756 #endif /* _KERNEL */ 757 758 #include <net/ifq.h> /* XXXAO: temporary unconditional include */ 759 760 #endif /* !_NET_IF_VAR_H_ */ 761