if.h revision 1.84
1 /* $NetBSD: if.h,v 1.84 2003/02/01 06:23:46 thorpej 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 }; 292 #define if_mtu if_data.ifi_mtu 293 #define if_type if_data.ifi_type 294 #define if_addrlen if_data.ifi_addrlen 295 #define if_hdrlen if_data.ifi_hdrlen 296 #define if_metric if_data.ifi_metric 297 #define if_link_state if_data.ifi_link_state 298 #define if_baudrate if_data.ifi_baudrate 299 #define if_ipackets if_data.ifi_ipackets 300 #define if_ierrors if_data.ifi_ierrors 301 #define if_opackets if_data.ifi_opackets 302 #define if_oerrors if_data.ifi_oerrors 303 #define if_collisions if_data.ifi_collisions 304 #define if_ibytes if_data.ifi_ibytes 305 #define if_obytes if_data.ifi_obytes 306 #define if_imcasts if_data.ifi_imcasts 307 #define if_omcasts if_data.ifi_omcasts 308 #define if_iqdrops if_data.ifi_iqdrops 309 #define if_noproto if_data.ifi_noproto 310 #define if_lastchange if_data.ifi_lastchange 311 312 #define IFF_UP 0x0001 /* interface is up */ 313 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 314 #define IFF_DEBUG 0x0004 /* turn on debugging */ 315 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 316 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 317 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */ 318 #define IFF_RUNNING 0x0040 /* resources allocated */ 319 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 320 #define IFF_PROMISC 0x0100 /* receive all packets */ 321 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 322 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 323 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 324 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 325 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 326 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 327 #define IFF_MULTICAST 0x8000 /* supports multicast */ 328 329 /* flags set internally only: */ 330 #define IFF_CANTCHANGE \ 331 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 332 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 333 334 /* 335 * Some convenience macros used for setting ifi_baudrate. 336 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 337 */ 338 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 339 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 340 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 341 342 /* Capabilities that interfaces can advertise. */ 343 #define IFCAP_CSUM_IPv4 0x0001 /* can do IPv4 header checksums */ 344 #define IFCAP_CSUM_TCPv4 0x0002 /* can do IPv4/TCP checksums */ 345 #define IFCAP_CSUM_UDPv4 0x0004 /* can do IPv4/UDP checksums */ 346 #define IFCAP_CSUM_TCPv6 0x0008 /* can do IPv6/TCP checksums */ 347 #define IFCAP_CSUM_UDPv6 0x0010 /* can do IPv6/UDP checksums */ 348 #define IFCAP_CSUM_TCPv4_Rx 0x0020 /* can do IPv4/TCP (Rx only) */ 349 #define IFCAP_CSUM_UDPv4_Rx 0x0040 /* can do IPv4/UDP (Rx only) */ 350 351 /* 352 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 353 * input routines have queues of messages stored on ifqueue structures 354 * (defined above). Entries are added to and deleted from these structures 355 * by these macros, which should be called with ipl raised to splnet(). 356 */ 357 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 358 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 359 #define IF_ENQUEUE(ifq, m) { \ 360 (m)->m_nextpkt = 0; \ 361 if ((ifq)->ifq_tail == 0) \ 362 (ifq)->ifq_head = m; \ 363 else \ 364 (ifq)->ifq_tail->m_nextpkt = m; \ 365 (ifq)->ifq_tail = m; \ 366 (ifq)->ifq_len++; \ 367 } 368 #define IF_PREPEND(ifq, m) { \ 369 (m)->m_nextpkt = (ifq)->ifq_head; \ 370 if ((ifq)->ifq_tail == 0) \ 371 (ifq)->ifq_tail = (m); \ 372 (ifq)->ifq_head = (m); \ 373 (ifq)->ifq_len++; \ 374 } 375 #define IF_DEQUEUE(ifq, m) { \ 376 (m) = (ifq)->ifq_head; \ 377 if (m) { \ 378 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 379 (ifq)->ifq_tail = 0; \ 380 (m)->m_nextpkt = 0; \ 381 (ifq)->ifq_len--; \ 382 } \ 383 } 384 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 385 #define IF_PURGE(ifq) \ 386 do { \ 387 struct mbuf *__m0; \ 388 \ 389 for (;;) { \ 390 IF_DEQUEUE((ifq), __m0); \ 391 if (__m0 == NULL) \ 392 break; \ 393 else \ 394 m_freem(__m0); \ 395 } \ 396 } while (/*CONSTCOND*/ 0) 397 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 398 399 #define IFQ_MAXLEN 50 400 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 401 402 /* 403 * Structure defining statistics and other data kept regarding an address 404 * on a network interface. 405 */ 406 struct ifaddr_data { 407 int64_t ifad_inbytes; 408 int64_t ifad_outbytes; 409 }; 410 411 /* 412 * The ifaddr structure contains information about one address 413 * of an interface. They are maintained by the different address families, 414 * are allocated and attached when an address is set, and are linked 415 * together so all addresses for an interface can be located. 416 */ 417 struct ifaddr { 418 struct sockaddr *ifa_addr; /* address of interface */ 419 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 420 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 421 struct sockaddr *ifa_netmask; /* used to determine subnet */ 422 struct ifnet *ifa_ifp; /* back-pointer to interface */ 423 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 424 struct ifaddr_data ifa_data; /* statistics on the address */ 425 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 426 __P((int, struct rtentry *, struct rt_addrinfo *)); 427 u_int ifa_flags; /* mostly rt_flags for cloning */ 428 int ifa_refcnt; /* count of references */ 429 int ifa_metric; /* cost of going out this interface */ 430 }; 431 #define IFA_ROUTE RTF_UP /* 0x01 *//* route installed */ 432 433 /* 434 * Message format for use in obtaining information about interfaces 435 * from sysctl and the routing socket. 436 */ 437 struct if_msghdr { 438 u_short ifm_msglen; /* to skip over non-understood messages */ 439 u_char ifm_version; /* future binary compatibility */ 440 u_char ifm_type; /* message type */ 441 int ifm_addrs; /* like rtm_addrs */ 442 int ifm_flags; /* value of if_flags */ 443 u_short ifm_index; /* index for associated ifp */ 444 struct if_data ifm_data;/* statistics and other data about if */ 445 }; 446 447 #if defined(_KERNEL) && defined(COMPAT_14) 448 /* pre-1.5 if_msghdr (ifm_data changed) */ 449 struct if_msghdr14 { 450 u_short ifm_msglen; /* to skip over non-understood messages */ 451 u_char ifm_version; /* future binary compatibility */ 452 u_char ifm_type; /* message type */ 453 int ifm_addrs; /* like rtm_addrs */ 454 int ifm_flags; /* value of if_flags */ 455 u_short ifm_index; /* index for associated ifp */ 456 struct if_data14 ifm_data; /* statistics and other data about if */ 457 }; 458 #endif /* _KERNEL && COMPAT_14 */ 459 460 /* 461 * Message format for use in obtaining information about interface addresses 462 * from sysctl and the routing socket. 463 */ 464 struct ifa_msghdr { 465 u_short ifam_msglen; /* to skip over non-understood messages */ 466 u_char ifam_version; /* future binary compatibility */ 467 u_char ifam_type; /* message type */ 468 int ifam_addrs; /* like rtm_addrs */ 469 int ifam_flags; /* value of ifa_flags */ 470 u_short ifam_index; /* index for associated ifp */ 471 int ifam_metric; /* value of ifa_metric */ 472 }; 473 474 /* 475 * Message format announcing the arrival or departure of a network interface. 476 */ 477 struct if_announcemsghdr { 478 u_short ifan_msglen; /* to skip over non-understood messages */ 479 u_char ifan_version; /* future binary compatibility */ 480 u_char ifan_type; /* message type */ 481 u_short ifan_index; /* index for associated ifp */ 482 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 483 u_short ifan_what; /* what type of announcement */ 484 }; 485 486 #define IFAN_ARRIVAL 0 /* interface arrival */ 487 #define IFAN_DEPARTURE 1 /* interface departure */ 488 489 /* 490 * Interface request structure used for socket 491 * ioctl's. All interface ioctl's must have parameter 492 * definitions which begin with ifr_name. The 493 * remainder may be interface specific. 494 */ 495 struct ifreq { 496 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 497 union { 498 struct sockaddr ifru_addr; 499 struct sockaddr ifru_dstaddr; 500 struct sockaddr ifru_broadaddr; 501 short ifru_flags; 502 int ifru_metric; 503 int ifru_mtu; 504 int ifru_dlt; 505 u_int ifru_value; 506 caddr_t ifru_data; 507 } ifr_ifru; 508 #define ifr_addr ifr_ifru.ifru_addr /* address */ 509 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 510 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 511 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 512 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 513 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 514 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 515 #define ifr_value ifr_ifru.ifru_value /* generic value */ 516 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 517 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 518 }; 519 520 struct ifcapreq { 521 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 522 uint64_t ifcr_capabilities; /* supported capabiliites */ 523 uint64_t ifcr_capenable; /* capabilities enabled */ 524 }; 525 526 struct ifaliasreq { 527 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 528 struct sockaddr ifra_addr; 529 struct sockaddr ifra_dstaddr; 530 #define ifra_broadaddr ifra_dstaddr 531 struct sockaddr ifra_mask; 532 }; 533 534 struct ifdatareq { 535 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 536 struct if_data ifdr_data; 537 }; 538 539 struct ifmediareq { 540 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 541 int ifm_current; /* current media options */ 542 int ifm_mask; /* don't care mask */ 543 int ifm_status; /* media status */ 544 int ifm_active; /* active options */ 545 int ifm_count; /* # entries in ifm_ulist 546 array */ 547 int *ifm_ulist; /* media words */ 548 }; 549 550 551 struct ifdrv { 552 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 553 unsigned long ifd_cmd; 554 size_t ifd_len; 555 void *ifd_data; 556 }; 557 558 /* 559 * Structure used in SIOCGIFCONF request. 560 * Used to retrieve interface configuration 561 * for machine (useful for programs which 562 * must know all networks accessible). 563 */ 564 struct ifconf { 565 int ifc_len; /* size of associated buffer */ 566 union { 567 caddr_t ifcu_buf; 568 struct ifreq *ifcu_req; 569 } ifc_ifcu; 570 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 571 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 572 }; 573 574 /* 575 * Structure for SIOC[AGD]LIFADDR 576 */ 577 struct if_laddrreq { 578 char iflr_name[IFNAMSIZ]; 579 unsigned int flags; 580 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 581 unsigned int prefixlen; /* in/out */ 582 struct sockaddr_storage addr; /* in/out */ 583 struct sockaddr_storage dstaddr; /* out */ 584 }; 585 586 #include <net/if_arp.h> 587 588 #endif /* !_XOPEN_SOURCE */ 589 590 #ifdef _KERNEL 591 #ifdef IFAREF_DEBUG 592 #define IFAREF(ifa) \ 593 do { \ 594 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 595 (ifa), ++(ifa)->ifa_refcnt); \ 596 } while (/*CONSTCOND*/ 0) 597 598 #define IFAFREE(ifa) \ 599 do { \ 600 if ((ifa)->ifa_refcnt <= 0) \ 601 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 602 __LINE__, (ifa)); \ 603 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 604 (ifa), --(ifa)->ifa_refcnt); \ 605 if ((ifa)->ifa_refcnt == 0) \ 606 ifafree(ifa); \ 607 } while (/*CONSTCOND*/ 0) 608 #else 609 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 610 611 #ifdef DIAGNOSTIC 612 #define IFAFREE(ifa) \ 613 do { \ 614 if ((ifa)->ifa_refcnt <= 0) \ 615 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 616 __LINE__, (ifa)); \ 617 if (--(ifa)->ifa_refcnt == 0) \ 618 ifafree(ifa); \ 619 } while (/*CONSTCOND*/ 0) 620 #else 621 #define IFAFREE(ifa) \ 622 do { \ 623 if (--(ifa)->ifa_refcnt == 0) \ 624 ifafree(ifa); \ 625 } while (/*CONSTCOND*/ 0) 626 #endif /* DIAGNOSTIC */ 627 #endif /* IFAREF_DEBUG */ 628 629 #ifdef ALTQ 630 #define ALTQ_DECL(x) x 631 632 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 633 do { \ 634 if (ALTQ_IS_ENABLED((ifq))) \ 635 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 636 else { \ 637 if (IF_QFULL((ifq))) { \ 638 m_freem((m)); \ 639 (err) = ENOBUFS; \ 640 } else { \ 641 IF_ENQUEUE((ifq), (m)); \ 642 (err) = 0; \ 643 } \ 644 } \ 645 if ((err)) \ 646 (ifq)->ifq_drops++; \ 647 } while (/*CONSTCOND*/ 0) 648 649 #define IFQ_DEQUEUE(ifq, m) \ 650 do { \ 651 if (TBR_IS_ENABLED((ifq))) \ 652 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 653 else if (ALTQ_IS_ENABLED((ifq))) \ 654 ALTQ_DEQUEUE((ifq), (m)); \ 655 else \ 656 IF_DEQUEUE((ifq), (m)); \ 657 } while (/*CONSTCOND*/ 0) 658 659 #define IFQ_POLL(ifq, m) \ 660 do { \ 661 if (TBR_IS_ENABLED((ifq))) \ 662 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 663 else if (ALTQ_IS_ENABLED((ifq))) \ 664 ALTQ_POLL((ifq), (m)); \ 665 else \ 666 IF_POLL((ifq), (m)); \ 667 } while (/*CONSTCOND*/ 0) 668 669 #define IFQ_PURGE(ifq) \ 670 do { \ 671 if (ALTQ_IS_ENABLED((ifq))) \ 672 ALTQ_PURGE((ifq)); \ 673 else \ 674 IF_PURGE((ifq)); \ 675 } while (/*CONSTCOND*/ 0) 676 677 #define IFQ_SET_READY(ifq) \ 678 do { \ 679 (ifq)->altq_flags |= ALTQF_READY; \ 680 } while (/*CONSTCOND*/ 0) 681 682 #define IFQ_CLASSIFY(ifq, m, af, pa) \ 683 do { \ 684 if (ALTQ_IS_ENABLED((ifq))) { \ 685 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 686 (pa)->pattr_class = (*(ifq)->altq_classify) \ 687 ((ifq)->altq_clfier, (m), (af)); \ 688 (pa)->pattr_af = (af); \ 689 (pa)->pattr_hdr = mtod((m), caddr_t); \ 690 } \ 691 } while (/*CONSTCOND*/ 0) 692 #else /* ! ALTQ */ 693 #define ALTQ_DECL(x) /* nothing */ 694 695 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 696 do { \ 697 if (IF_QFULL((ifq))) { \ 698 m_freem((m)); \ 699 (err) = ENOBUFS; \ 700 } else { \ 701 IF_ENQUEUE((ifq), (m)); \ 702 (err) = 0; \ 703 } \ 704 if ((err)) \ 705 (ifq)->ifq_drops++; \ 706 } while (/*CONSTCOND*/ 0) 707 708 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 709 710 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 711 712 #define IFQ_PURGE(ifq) IF_PURGE((ifq)) 713 714 #define IFQ_SET_READY(ifq) /* nothing */ 715 716 #define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 717 718 #endif /* ALTQ */ 719 720 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 721 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 722 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 723 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 724 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 725 726 #include <sys/mallocvar.h> 727 MALLOC_DECLARE(M_IFADDR); 728 MALLOC_DECLARE(M_IFMADDR); 729 730 extern struct ifnet_head ifnet; 731 extern struct ifnet **ifindex2ifnet; 732 #if 0 733 struct ifnet loif[]; 734 #endif 735 extern u_int if_index; 736 737 char *ether_sprintf __P((const u_char *)); 738 739 void if_alloc_sadl __P((struct ifnet *)); 740 void if_free_sadl __P((struct ifnet *)); 741 void if_attach __P((struct ifnet *)); 742 void if_attachdomain __P((void)); 743 void if_attachdomain1 __P((struct ifnet *)); 744 void if_deactivate __P((struct ifnet *)); 745 void if_detach __P((struct ifnet *)); 746 void if_down __P((struct ifnet *)); 747 void if_slowtimo __P((void *)); 748 void if_up __P((struct ifnet *)); 749 int ifconf __P((u_long, caddr_t)); 750 void ifinit __P((void)); 751 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 752 int ifpromisc __P((struct ifnet *, int)); 753 struct ifnet *ifunit __P((const char *)); 754 755 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 756 struct ifaddr *ifa_ifwithaf __P((int)); 757 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 758 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 759 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 760 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 761 struct sockaddr *)); 762 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 763 void ifafree __P((struct ifaddr *)); 764 void link_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 765 766 void if_clone_attach __P((struct if_clone *)); 767 void if_clone_detach __P((struct if_clone *)); 768 769 int if_clone_create __P((const char *)); 770 int if_clone_destroy __P((const char *)); 771 772 int loioctl __P((struct ifnet *, u_long, caddr_t)); 773 void loopattach __P((int)); 774 int looutput __P((struct ifnet *, 775 struct mbuf *, struct sockaddr *, struct rtentry *)); 776 void lortrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 777 778 /* 779 * These are exported because they're an easy way to tell if 780 * an interface is going away without having to burn a flag. 781 */ 782 int if_nulloutput __P((struct ifnet *, struct mbuf *, 783 struct sockaddr *, struct rtentry *)); 784 void if_nullinput __P((struct ifnet *, struct mbuf *)); 785 void if_nullstart __P((struct ifnet *)); 786 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 787 int if_nullinit __P((struct ifnet *)); 788 void if_nullstop __P((struct ifnet *, int)); 789 void if_nullwatchdog __P((struct ifnet *)); 790 void if_nulldrain __P((struct ifnet *)); 791 #else 792 struct if_nameindex { 793 unsigned int if_index; /* 1, 2, ... */ 794 char *if_name; /* null terminated name: "le0", ... */ 795 }; 796 797 #include <sys/cdefs.h> 798 __BEGIN_DECLS 799 unsigned int if_nametoindex __P((const char *)); 800 char * if_indextoname __P((unsigned int, char *)); 801 struct if_nameindex * if_nameindex __P((void)); 802 void if_freenameindex __P((struct if_nameindex *)); 803 __END_DECLS 804 #endif /* _KERNEL */ 805 #endif /* !_NET_IF_H_ */ 806
Indexes created Thu Sep 25 16:09:42 GMT 2025