if.h revision 1.86
1 /* $NetBSD: if.h,v 1.86 2003/03/05 22:56:46 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by William Studnemund and Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1982, 1986, 1989, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)if.h 8.3 (Berkeley) 2/9/95 72 */ 73 74 #ifndef _NET_IF_H_ 75 #define _NET_IF_H_ 76 77 #if !defined(_XOPEN_SOURCE) 78 79 #include <sys/socket.h> 80 #include <sys/queue.h> 81 #include <net/dlt.h> 82 #include <net/pfil.h> 83 84 /* 85 * Always include ALTQ glue here -- we use the ALTQ interface queue 86 * structure even when ALTQ is not configured into the kernel so that 87 * the size of struct ifnet does not changed based on the option. The 88 * ALTQ queue structure is API-compatible with the legacy ifqueue. 89 */ 90 #include <altq/if_altq.h> 91 92 /* 93 * Structures defining a network interface, providing a packet 94 * transport mechanism (ala level 0 of the PUP protocols). 95 * 96 * Each interface accepts output datagrams of a specified maximum 97 * length, and provides higher level routines with input datagrams 98 * received from its medium. 99 * 100 * Output occurs when the routine if_output is called, with four parameters: 101 * (*ifp->if_output)(ifp, m, dst, rt) 102 * Here m is the mbuf chain to be sent and dst is the destination address. 103 * The output routine encapsulates the supplied datagram if necessary, 104 * and then transmits it on its medium. 105 * 106 * On input, each interface unwraps the data received by it, and either 107 * places it on the input queue of a internetwork datagram routine 108 * and posts the associated software interrupt, or passes the datagram to a raw 109 * packet input routine. 110 * 111 * Routines exist for locating interfaces by their addresses 112 * or for locating a interface on a certain network, as well as more general 113 * routing and gateway routines maintaining information used to locate 114 * interfaces. These routines live in the files if.c and route.c 115 */ 116 /* XXX fast fix for SNMP, going away soon */ 117 #include <sys/time.h> 118 119 #if defined(_KERNEL_OPT) 120 #include "opt_compat_netbsd.h" 121 #endif 122 123 struct mbuf; 124 struct proc; 125 struct rtentry; 126 struct socket; 127 struct ether_header; 128 struct ifnet; 129 struct rt_addrinfo; 130 131 /* 132 * Length of interface external name, including terminating '\0'. 133 * Note: this is the same size as a generic device's external name. 134 */ 135 #define IFNAMSIZ 16 136 #define IF_NAMESIZE IFNAMSIZ 137 138 /* 139 * Structure describing a `cloning' interface. 140 */ 141 struct if_clone { 142 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 143 const char *ifc_name; /* name of device, e.g. `gif' */ 144 size_t ifc_namelen; /* length of name */ 145 146 int (*ifc_create)(struct if_clone *, int); 147 void (*ifc_destroy)(struct ifnet *); 148 }; 149 150 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 151 { { 0 }, name, sizeof(name) - 1, create, destroy } 152 153 /* 154 * Structure used to query names of interface cloners. 155 */ 156 struct if_clonereq { 157 int ifcr_total; /* total cloners (out) */ 158 int ifcr_count; /* room for this many in user buffer */ 159 char *ifcr_buffer; /* buffer for cloner names */ 160 }; 161 162 /* 163 * Structure defining statistics and other data kept regarding a network 164 * interface. 165 */ 166 struct if_data { 167 /* generic interface information */ 168 u_char ifi_type; /* ethernet, tokenring, etc. */ 169 u_char ifi_addrlen; /* media address length */ 170 u_char ifi_hdrlen; /* media header length */ 171 int ifi_link_state; /* current link state */ 172 u_quad_t ifi_mtu; /* maximum transmission unit */ 173 u_quad_t ifi_metric; /* routing metric (external only) */ 174 u_quad_t ifi_baudrate; /* linespeed */ 175 /* volatile statistics */ 176 u_quad_t ifi_ipackets; /* packets received on interface */ 177 u_quad_t ifi_ierrors; /* input errors on interface */ 178 u_quad_t ifi_opackets; /* packets sent on interface */ 179 u_quad_t ifi_oerrors; /* output errors on interface */ 180 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 181 u_quad_t ifi_ibytes; /* total number of octets received */ 182 u_quad_t ifi_obytes; /* total number of octets sent */ 183 u_quad_t ifi_imcasts; /* packets received via multicast */ 184 u_quad_t ifi_omcasts; /* packets sent via multicast */ 185 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 186 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 187 struct timeval ifi_lastchange; /* last operational state change */ 188 }; 189 190 /* 191 * Values for if_link_state. 192 */ 193 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 194 #define LINK_STATE_DOWN 1 /* link is down */ 195 #define LINK_STATE_UP 2 /* link is up */ 196 197 #if defined(_KERNEL) && defined(COMPAT_14) 198 /* Pre-1.5 if_data struct */ 199 struct if_data14 { 200 /* generic interface information */ 201 u_char ifi_type; /* ethernet, tokenring, etc. */ 202 u_char ifi_addrlen; /* media address length */ 203 u_char ifi_hdrlen; /* media header length */ 204 u_long ifi_mtu; /* maximum transmission unit */ 205 u_long ifi_metric; /* routing metric (external only) */ 206 u_long ifi_baudrate; /* linespeed */ 207 /* volatile statistics */ 208 u_long ifi_ipackets; /* packets received on interface */ 209 u_long ifi_ierrors; /* input errors on interface */ 210 u_long ifi_opackets; /* packets sent on interface */ 211 u_long ifi_oerrors; /* output errors on interface */ 212 u_long ifi_collisions; /* collisions on csma interfaces */ 213 u_long ifi_ibytes; /* total number of octets received */ 214 u_long ifi_obytes; /* total number of octets sent */ 215 u_long ifi_imcasts; /* packets received via multicast */ 216 u_long ifi_omcasts; /* packets sent via multicast */ 217 u_long ifi_iqdrops; /* dropped on input, this interface */ 218 u_long ifi_noproto; /* destined for unsupported protocol */ 219 struct timeval ifi_lastchange; /* last operational state change */ 220 }; 221 #endif /* _KERNEL && COMPAT_14 */ 222 223 /* 224 * Structure defining a queue for a network interface. 225 */ 226 struct ifqueue { 227 struct mbuf *ifq_head; 228 struct mbuf *ifq_tail; 229 int ifq_len; 230 int ifq_maxlen; 231 int ifq_drops; 232 }; 233 234 /* 235 * Structure defining a queue for a network interface. 236 * 237 * (Would like to call this struct ``if'', but C isn't PL/1.) 238 */ 239 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 240 241 struct ifnet { /* and the entries */ 242 void *if_softc; /* lower-level data for this if */ 243 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 244 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 245 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 246 int if_pcount; /* number of promiscuous listeners */ 247 caddr_t if_bpf; /* packet filter structure */ 248 u_short if_index; /* numeric abbreviation for this if */ 249 short if_timer; /* time 'til if_watchdog called */ 250 short if_flags; /* up/down, broadcast, etc. */ 251 short if__pad1; /* be nice to m68k ports */ 252 struct if_data if_data; /* statistics and other data about if */ 253 /* 254 * Procedure handles. If you add more of these, don't forget the 255 * corresponding NULL stub in if.c. 256 */ 257 int (*if_output) /* output routine (enqueue) */ 258 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 259 struct rtentry *)); 260 void (*if_input) /* input routine (from h/w driver) */ 261 __P((struct ifnet *, struct mbuf *)); 262 void (*if_start) /* initiate output routine */ 263 __P((struct ifnet *)); 264 int (*if_ioctl) /* ioctl routine */ 265 __P((struct ifnet *, u_long, caddr_t)); 266 int (*if_init) /* init routine */ 267 __P((struct ifnet *)); 268 void (*if_stop) /* stop routine */ 269 __P((struct ifnet *, int)); 270 void (*if_watchdog) /* timer routine */ 271 __P((struct ifnet *)); 272 void (*if_drain) /* routine to release resources */ 273 __P((struct ifnet *)); 274 struct ifaltq if_snd; /* output queue (includes altq) */ 275 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 276 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 277 void *if_bridge; /* bridge glue */ 278 int if_dlt; /* data link type (<net/dlt.h>) */ 279 struct pfil_head if_pfil; /* filtering point */ 280 uint64_t if_capabilities; /* interface capabilities */ 281 uint64_t if_capenable; /* capabilities enabled */ 282 283 /* 284 * These are pre-computed based on an interfaces enabled 285 * capabilities, for speed elsewhere. 286 */ 287 int if_csum_flags_tx; /* M_CSUM_* flags for Tx */ 288 int if_csum_flags_rx; /* M_CSUM_* flags for Rx */ 289 290 void *if_afdata[AF_MAX]; 291 struct mowner *if_mowner; /* who owns mbufs for this interface */ 292 }; 293 #define if_mtu if_data.ifi_mtu 294 #define if_type if_data.ifi_type 295 #define if_addrlen if_data.ifi_addrlen 296 #define if_hdrlen if_data.ifi_hdrlen 297 #define if_metric if_data.ifi_metric 298 #define if_link_state if_data.ifi_link_state 299 #define if_baudrate if_data.ifi_baudrate 300 #define if_ipackets if_data.ifi_ipackets 301 #define if_ierrors if_data.ifi_ierrors 302 #define if_opackets if_data.ifi_opackets 303 #define if_oerrors if_data.ifi_oerrors 304 #define if_collisions if_data.ifi_collisions 305 #define if_ibytes if_data.ifi_ibytes 306 #define if_obytes if_data.ifi_obytes 307 #define if_imcasts if_data.ifi_imcasts 308 #define if_omcasts if_data.ifi_omcasts 309 #define if_iqdrops if_data.ifi_iqdrops 310 #define if_noproto if_data.ifi_noproto 311 #define if_lastchange if_data.ifi_lastchange 312 313 #define IFF_UP 0x0001 /* interface is up */ 314 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 315 #define IFF_DEBUG 0x0004 /* turn on debugging */ 316 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 317 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 318 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */ 319 #define IFF_RUNNING 0x0040 /* resources allocated */ 320 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 321 #define IFF_PROMISC 0x0100 /* receive all packets */ 322 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 323 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 324 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 325 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 326 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 327 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 328 #define IFF_MULTICAST 0x8000 /* supports multicast */ 329 330 /* flags set internally only: */ 331 #define IFF_CANTCHANGE \ 332 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 333 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 334 335 /* 336 * Some convenience macros used for setting ifi_baudrate. 337 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 338 */ 339 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 340 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 341 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 342 343 /* Capabilities that interfaces can advertise. */ 344 #define IFCAP_CSUM_IPv4 0x0001 /* can do IPv4 header checksums */ 345 #define IFCAP_CSUM_TCPv4 0x0002 /* can do IPv4/TCP checksums */ 346 #define IFCAP_CSUM_UDPv4 0x0004 /* can do IPv4/UDP checksums */ 347 #define IFCAP_CSUM_TCPv6 0x0008 /* can do IPv6/TCP checksums */ 348 #define IFCAP_CSUM_UDPv6 0x0010 /* can do IPv6/UDP checksums */ 349 #define IFCAP_CSUM_TCPv4_Rx 0x0020 /* can do IPv4/TCP (Rx only) */ 350 #define IFCAP_CSUM_UDPv4_Rx 0x0040 /* can do IPv4/UDP (Rx only) */ 351 352 /* 353 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 354 * input routines have queues of messages stored on ifqueue structures 355 * (defined above). Entries are added to and deleted from these structures 356 * by these macros, which should be called with ipl raised to splnet(). 357 */ 358 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 359 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 360 #define IF_ENQUEUE(ifq, m) { \ 361 (m)->m_nextpkt = 0; \ 362 if ((ifq)->ifq_tail == 0) \ 363 (ifq)->ifq_head = m; \ 364 else \ 365 (ifq)->ifq_tail->m_nextpkt = m; \ 366 (ifq)->ifq_tail = m; \ 367 (ifq)->ifq_len++; \ 368 } 369 #define IF_PREPEND(ifq, m) { \ 370 (m)->m_nextpkt = (ifq)->ifq_head; \ 371 if ((ifq)->ifq_tail == 0) \ 372 (ifq)->ifq_tail = (m); \ 373 (ifq)->ifq_head = (m); \ 374 (ifq)->ifq_len++; \ 375 } 376 #define IF_DEQUEUE(ifq, m) { \ 377 (m) = (ifq)->ifq_head; \ 378 if (m) { \ 379 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 380 (ifq)->ifq_tail = 0; \ 381 (m)->m_nextpkt = 0; \ 382 (ifq)->ifq_len--; \ 383 } \ 384 } 385 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 386 #define IF_PURGE(ifq) \ 387 do { \ 388 struct mbuf *__m0; \ 389 \ 390 for (;;) { \ 391 IF_DEQUEUE((ifq), __m0); \ 392 if (__m0 == NULL) \ 393 break; \ 394 else \ 395 m_freem(__m0); \ 396 } \ 397 } while (/*CONSTCOND*/ 0) 398 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 399 400 #define IFQ_MAXLEN 50 401 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 402 403 /* 404 * Structure defining statistics and other data kept regarding an address 405 * on a network interface. 406 */ 407 struct ifaddr_data { 408 int64_t ifad_inbytes; 409 int64_t ifad_outbytes; 410 }; 411 412 /* 413 * The ifaddr structure contains information about one address 414 * of an interface. They are maintained by the different address families, 415 * are allocated and attached when an address is set, and are linked 416 * together so all addresses for an interface can be located. 417 */ 418 struct ifaddr { 419 struct sockaddr *ifa_addr; /* address of interface */ 420 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 421 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 422 struct sockaddr *ifa_netmask; /* used to determine subnet */ 423 struct ifnet *ifa_ifp; /* back-pointer to interface */ 424 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 425 struct ifaddr_data ifa_data; /* statistics on the address */ 426 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 427 __P((int, struct rtentry *, struct rt_addrinfo *)); 428 u_int ifa_flags; /* mostly rt_flags for cloning */ 429 int ifa_refcnt; /* count of references */ 430 int ifa_metric; /* cost of going out this interface */ 431 }; 432 #define IFA_ROUTE RTF_UP /* 0x01 *//* route installed */ 433 434 /* 435 * Message format for use in obtaining information about interfaces 436 * from sysctl and the routing socket. 437 */ 438 struct if_msghdr { 439 u_short ifm_msglen; /* to skip over non-understood messages */ 440 u_char ifm_version; /* future binary compatibility */ 441 u_char ifm_type; /* message type */ 442 int ifm_addrs; /* like rtm_addrs */ 443 int ifm_flags; /* value of if_flags */ 444 u_short ifm_index; /* index for associated ifp */ 445 struct if_data ifm_data;/* statistics and other data about if */ 446 }; 447 448 #if defined(_KERNEL) && defined(COMPAT_14) 449 /* pre-1.5 if_msghdr (ifm_data changed) */ 450 struct if_msghdr14 { 451 u_short ifm_msglen; /* to skip over non-understood messages */ 452 u_char ifm_version; /* future binary compatibility */ 453 u_char ifm_type; /* message type */ 454 int ifm_addrs; /* like rtm_addrs */ 455 int ifm_flags; /* value of if_flags */ 456 u_short ifm_index; /* index for associated ifp */ 457 struct if_data14 ifm_data; /* statistics and other data about if */ 458 }; 459 #endif /* _KERNEL && COMPAT_14 */ 460 461 /* 462 * Message format for use in obtaining information about interface addresses 463 * from sysctl and the routing socket. 464 */ 465 struct ifa_msghdr { 466 u_short ifam_msglen; /* to skip over non-understood messages */ 467 u_char ifam_version; /* future binary compatibility */ 468 u_char ifam_type; /* message type */ 469 int ifam_addrs; /* like rtm_addrs */ 470 int ifam_flags; /* value of ifa_flags */ 471 u_short ifam_index; /* index for associated ifp */ 472 int ifam_metric; /* value of ifa_metric */ 473 }; 474 475 /* 476 * Message format announcing the arrival or departure of a network interface. 477 */ 478 struct if_announcemsghdr { 479 u_short ifan_msglen; /* to skip over non-understood messages */ 480 u_char ifan_version; /* future binary compatibility */ 481 u_char ifan_type; /* message type */ 482 u_short ifan_index; /* index for associated ifp */ 483 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 484 u_short ifan_what; /* what type of announcement */ 485 }; 486 487 #define IFAN_ARRIVAL 0 /* interface arrival */ 488 #define IFAN_DEPARTURE 1 /* interface departure */ 489 490 /* 491 * Interface request structure used for socket 492 * ioctl's. All interface ioctl's must have parameter 493 * definitions which begin with ifr_name. The 494 * remainder may be interface specific. 495 */ 496 struct ifreq { 497 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 498 union { 499 struct sockaddr ifru_addr; 500 struct sockaddr ifru_dstaddr; 501 struct sockaddr ifru_broadaddr; 502 short ifru_flags; 503 int ifru_metric; 504 int ifru_mtu; 505 int ifru_dlt; 506 u_int ifru_value; 507 caddr_t ifru_data; 508 } ifr_ifru; 509 #define ifr_addr ifr_ifru.ifru_addr /* address */ 510 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 511 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 512 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 513 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 514 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 515 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 516 #define ifr_value ifr_ifru.ifru_value /* generic value */ 517 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 518 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 519 }; 520 521 struct ifcapreq { 522 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 523 uint64_t ifcr_capabilities; /* supported capabiliites */ 524 uint64_t ifcr_capenable; /* capabilities enabled */ 525 }; 526 527 struct ifaliasreq { 528 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 529 struct sockaddr ifra_addr; 530 struct sockaddr ifra_dstaddr; 531 #define ifra_broadaddr ifra_dstaddr 532 struct sockaddr ifra_mask; 533 }; 534 535 struct ifdatareq { 536 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 537 struct if_data ifdr_data; 538 }; 539 540 struct ifmediareq { 541 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 542 int ifm_current; /* current media options */ 543 int ifm_mask; /* don't care mask */ 544 int ifm_status; /* media status */ 545 int ifm_active; /* active options */ 546 int ifm_count; /* # entries in ifm_ulist 547 array */ 548 int *ifm_ulist; /* media words */ 549 }; 550 551 552 struct ifdrv { 553 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 554 unsigned long ifd_cmd; 555 size_t ifd_len; 556 void *ifd_data; 557 }; 558 559 /* 560 * Structure used in SIOCGIFCONF request. 561 * Used to retrieve interface configuration 562 * for machine (useful for programs which 563 * must know all networks accessible). 564 */ 565 struct ifconf { 566 int ifc_len; /* size of associated buffer */ 567 union { 568 caddr_t ifcu_buf; 569 struct ifreq *ifcu_req; 570 } ifc_ifcu; 571 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 572 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 573 }; 574 575 /* 576 * Structure for SIOC[AGD]LIFADDR 577 */ 578 struct if_laddrreq { 579 char iflr_name[IFNAMSIZ]; 580 unsigned int flags; 581 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 582 unsigned int prefixlen; /* in/out */ 583 struct sockaddr_storage addr; /* in/out */ 584 struct sockaddr_storage dstaddr; /* out */ 585 }; 586 587 #include <net/if_arp.h> 588 589 #endif /* !_XOPEN_SOURCE */ 590 591 #ifdef _KERNEL 592 #ifdef IFAREF_DEBUG 593 #define IFAREF(ifa) \ 594 do { \ 595 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 596 (ifa), ++(ifa)->ifa_refcnt); \ 597 } while (/*CONSTCOND*/ 0) 598 599 #define IFAFREE(ifa) \ 600 do { \ 601 if ((ifa)->ifa_refcnt <= 0) \ 602 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 603 __LINE__, (ifa)); \ 604 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 605 (ifa), --(ifa)->ifa_refcnt); \ 606 if ((ifa)->ifa_refcnt == 0) \ 607 ifafree(ifa); \ 608 } while (/*CONSTCOND*/ 0) 609 #else 610 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 611 612 #ifdef DIAGNOSTIC 613 #define IFAFREE(ifa) \ 614 do { \ 615 if ((ifa)->ifa_refcnt <= 0) \ 616 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 617 __LINE__, (ifa)); \ 618 if (--(ifa)->ifa_refcnt == 0) \ 619 ifafree(ifa); \ 620 } while (/*CONSTCOND*/ 0) 621 #else 622 #define IFAFREE(ifa) \ 623 do { \ 624 if (--(ifa)->ifa_refcnt == 0) \ 625 ifafree(ifa); \ 626 } while (/*CONSTCOND*/ 0) 627 #endif /* DIAGNOSTIC */ 628 #endif /* IFAREF_DEBUG */ 629 630 #ifdef ALTQ 631 #define ALTQ_DECL(x) x 632 633 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 634 do { \ 635 if (ALTQ_IS_ENABLED((ifq))) \ 636 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 637 else { \ 638 if (IF_QFULL((ifq))) { \ 639 m_freem((m)); \ 640 (err) = ENOBUFS; \ 641 } else { \ 642 IF_ENQUEUE((ifq), (m)); \ 643 (err) = 0; \ 644 } \ 645 } \ 646 if ((err)) \ 647 (ifq)->ifq_drops++; \ 648 } while (/*CONSTCOND*/ 0) 649 650 #define IFQ_DEQUEUE(ifq, m) \ 651 do { \ 652 if (TBR_IS_ENABLED((ifq))) \ 653 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 654 else if (ALTQ_IS_ENABLED((ifq))) \ 655 ALTQ_DEQUEUE((ifq), (m)); \ 656 else \ 657 IF_DEQUEUE((ifq), (m)); \ 658 } while (/*CONSTCOND*/ 0) 659 660 #define IFQ_POLL(ifq, m) \ 661 do { \ 662 if (TBR_IS_ENABLED((ifq))) \ 663 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 664 else if (ALTQ_IS_ENABLED((ifq))) \ 665 ALTQ_POLL((ifq), (m)); \ 666 else \ 667 IF_POLL((ifq), (m)); \ 668 } while (/*CONSTCOND*/ 0) 669 670 #define IFQ_PURGE(ifq) \ 671 do { \ 672 if (ALTQ_IS_ENABLED((ifq))) \ 673 ALTQ_PURGE((ifq)); \ 674 else \ 675 IF_PURGE((ifq)); \ 676 } while (/*CONSTCOND*/ 0) 677 678 #define IFQ_SET_READY(ifq) \ 679 do { \ 680 (ifq)->altq_flags |= ALTQF_READY; \ 681 } while (/*CONSTCOND*/ 0) 682 683 #define IFQ_CLASSIFY(ifq, m, af, pa) \ 684 do { \ 685 if (ALTQ_IS_ENABLED((ifq))) { \ 686 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 687 (pa)->pattr_class = (*(ifq)->altq_classify) \ 688 ((ifq)->altq_clfier, (m), (af)); \ 689 (pa)->pattr_af = (af); \ 690 (pa)->pattr_hdr = mtod((m), caddr_t); \ 691 } \ 692 } while (/*CONSTCOND*/ 0) 693 #else /* ! ALTQ */ 694 #define ALTQ_DECL(x) /* nothing */ 695 696 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 697 do { \ 698 if (IF_QFULL((ifq))) { \ 699 m_freem((m)); \ 700 (err) = ENOBUFS; \ 701 } else { \ 702 IF_ENQUEUE((ifq), (m)); \ 703 (err) = 0; \ 704 } \ 705 if ((err)) \ 706 (ifq)->ifq_drops++; \ 707 } while (/*CONSTCOND*/ 0) 708 709 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 710 711 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 712 713 #define IFQ_PURGE(ifq) IF_PURGE((ifq)) 714 715 #define IFQ_SET_READY(ifq) /* nothing */ 716 717 #define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 718 719 #endif /* ALTQ */ 720 721 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 722 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 723 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 724 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 725 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 726 727 #ifdef _KERNEL 728 #include <sys/mallocvar.h> 729 MALLOC_DECLARE(M_IFADDR); 730 MALLOC_DECLARE(M_IFMADDR); 731 #endif 732 733 extern struct ifnet_head ifnet; 734 extern struct ifnet **ifindex2ifnet; 735 #if 0 736 struct ifnet loif[]; 737 #endif 738 extern u_int if_index; 739 740 char *ether_sprintf __P((const u_char *)); 741 742 void if_alloc_sadl __P((struct ifnet *)); 743 void if_free_sadl __P((struct ifnet *)); 744 void if_attach __P((struct ifnet *)); 745 void if_attachdomain __P((void)); 746 void if_attachdomain1 __P((struct ifnet *)); 747 void if_deactivate __P((struct ifnet *)); 748 void if_detach __P((struct ifnet *)); 749 void if_down __P((struct ifnet *)); 750 void if_slowtimo __P((void *)); 751 void if_up __P((struct ifnet *)); 752 int ifconf __P((u_long, caddr_t)); 753 void ifinit __P((void)); 754 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 755 int ifpromisc __P((struct ifnet *, int)); 756 struct ifnet *ifunit __P((const char *)); 757 758 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 759 struct ifaddr *ifa_ifwithaf __P((int)); 760 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 761 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 762 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 763 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 764 struct sockaddr *)); 765 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 766 void ifafree __P((struct ifaddr *)); 767 void link_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 768 769 void if_clone_attach __P((struct if_clone *)); 770 void if_clone_detach __P((struct if_clone *)); 771 772 int if_clone_create __P((const char *)); 773 int if_clone_destroy __P((const char *)); 774 775 int loioctl __P((struct ifnet *, u_long, caddr_t)); 776 void loopattach __P((int)); 777 int looutput __P((struct ifnet *, 778 struct mbuf *, struct sockaddr *, struct rtentry *)); 779 void lortrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 780 781 /* 782 * These are exported because they're an easy way to tell if 783 * an interface is going away without having to burn a flag. 784 */ 785 int if_nulloutput __P((struct ifnet *, struct mbuf *, 786 struct sockaddr *, struct rtentry *)); 787 void if_nullinput __P((struct ifnet *, struct mbuf *)); 788 void if_nullstart __P((struct ifnet *)); 789 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 790 int if_nullinit __P((struct ifnet *)); 791 void if_nullstop __P((struct ifnet *, int)); 792 void if_nullwatchdog __P((struct ifnet *)); 793 void if_nulldrain __P((struct ifnet *)); 794 #else 795 struct if_nameindex { 796 unsigned int if_index; /* 1, 2, ... */ 797 char *if_name; /* null terminated name: "le0", ... */ 798 }; 799 800 #include <sys/cdefs.h> 801 __BEGIN_DECLS 802 unsigned int if_nametoindex __P((const char *)); 803 char * if_indextoname __P((unsigned int, char *)); 804 struct if_nameindex * if_nameindex __P((void)); 805 void if_freenameindex __P((struct if_nameindex *)); 806 __END_DECLS 807 #endif /* _KERNEL */ 808 #endif /* !_NET_IF_H_ */ 809
Indexes created Mon Sep 22 21:09:42 GMT 2025