if.h revision 1.103
1 /* $NetBSD: if.h,v 1.103 2005/03/06 00:08:30 matt 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. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)if.h 8.3 (Berkeley) 2/9/95 68 */ 69 70 #ifndef _NET_IF_H_ 71 #define _NET_IF_H_ 72 73 #include <sys/featuretest.h> 74 75 /* 76 * Length of interface external name, including terminating '\0'. 77 * Note: this is the same size as a generic device's external name. 78 */ 79 #define IF_NAMESIZE 16 80 81 #if defined(_NETBSD_SOURCE) 82 83 #include <sys/socket.h> 84 #include <sys/queue.h> 85 #include <net/dlt.h> 86 #include <net/pfil.h> 87 88 /* 89 * Always include ALTQ glue here -- we use the ALTQ interface queue 90 * structure even when ALTQ is not configured into the kernel so that 91 * the size of struct ifnet does not changed based on the option. The 92 * ALTQ queue structure is API-compatible with the legacy ifqueue. 93 */ 94 #include <altq/if_altq.h> 95 96 /* 97 * Structures defining a network interface, providing a packet 98 * transport mechanism (ala level 0 of the PUP protocols). 99 * 100 * Each interface accepts output datagrams of a specified maximum 101 * length, and provides higher level routines with input datagrams 102 * received from its medium. 103 * 104 * Output occurs when the routine if_output is called, with four parameters: 105 * (*ifp->if_output)(ifp, m, dst, rt) 106 * Here m is the mbuf chain to be sent and dst is the destination address. 107 * The output routine encapsulates the supplied datagram if necessary, 108 * and then transmits it on its medium. 109 * 110 * On input, each interface unwraps the data received by it, and either 111 * places it on the input queue of a internetwork datagram routine 112 * and posts the associated software interrupt, or passes the datagram to a raw 113 * packet input routine. 114 * 115 * Routines exist for locating interfaces by their addresses 116 * or for locating a interface on a certain network, as well as more general 117 * routing and gateway routines maintaining information used to locate 118 * interfaces. These routines live in the files if.c and route.c 119 */ 120 /* XXX fast fix for SNMP, going away soon */ 121 #include <sys/time.h> 122 123 #if defined(_KERNEL_OPT) 124 #include "opt_compat_netbsd.h" 125 #endif 126 127 struct mbuf; 128 struct proc; 129 struct rtentry; 130 struct socket; 131 struct ether_header; 132 struct ifnet; 133 struct rt_addrinfo; 134 135 #define IFNAMSIZ IF_NAMESIZE 136 137 /* 138 * Structure describing a `cloning' interface. 139 */ 140 struct if_clone { 141 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 142 const char *ifc_name; /* name of device, e.g. `gif' */ 143 size_t ifc_namelen; /* length of name */ 144 145 int (*ifc_create)(struct if_clone *, int); 146 int (*ifc_destroy)(struct ifnet *); 147 }; 148 149 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 150 { { 0 }, name, sizeof(name) - 1, create, destroy } 151 152 /* 153 * Structure used to query names of interface cloners. 154 */ 155 struct if_clonereq { 156 int ifcr_total; /* total cloners (out) */ 157 int ifcr_count; /* room for this many in user buffer */ 158 char *ifcr_buffer; /* buffer for cloner names */ 159 }; 160 161 /* 162 * Structure defining statistics and other data kept regarding a network 163 * interface. 164 */ 165 struct if_data { 166 /* generic interface information */ 167 u_char ifi_type; /* ethernet, tokenring, etc. */ 168 u_char ifi_addrlen; /* media address length */ 169 u_char ifi_hdrlen; /* media header length */ 170 int ifi_link_state; /* current link state */ 171 u_quad_t ifi_mtu; /* maximum transmission unit */ 172 u_quad_t ifi_metric; /* routing metric (external only) */ 173 u_quad_t ifi_baudrate; /* linespeed */ 174 /* volatile statistics */ 175 u_quad_t ifi_ipackets; /* packets received on interface */ 176 u_quad_t ifi_ierrors; /* input errors on interface */ 177 u_quad_t ifi_opackets; /* packets sent on interface */ 178 u_quad_t ifi_oerrors; /* output errors on interface */ 179 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 180 u_quad_t ifi_ibytes; /* total number of octets received */ 181 u_quad_t ifi_obytes; /* total number of octets sent */ 182 u_quad_t ifi_imcasts; /* packets received via multicast */ 183 u_quad_t ifi_omcasts; /* packets sent via multicast */ 184 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 185 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 186 struct timeval ifi_lastchange; /* last operational state change */ 187 }; 188 189 /* 190 * Values for if_link_state. 191 */ 192 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 193 #define LINK_STATE_DOWN 1 /* link is down */ 194 #define LINK_STATE_UP 2 /* link is up */ 195 196 #if defined(_KERNEL) && defined(COMPAT_14) 197 /* Pre-1.5 if_data struct */ 198 struct if_data14 { 199 /* generic interface information */ 200 u_char ifi_type; /* ethernet, tokenring, etc. */ 201 u_char ifi_addrlen; /* media address length */ 202 u_char ifi_hdrlen; /* media header length */ 203 u_long ifi_mtu; /* maximum transmission unit */ 204 u_long ifi_metric; /* routing metric (external only) */ 205 u_long ifi_baudrate; /* linespeed */ 206 /* volatile statistics */ 207 u_long ifi_ipackets; /* packets received on interface */ 208 u_long ifi_ierrors; /* input errors on interface */ 209 u_long ifi_opackets; /* packets sent on interface */ 210 u_long ifi_oerrors; /* output errors on interface */ 211 u_long ifi_collisions; /* collisions on csma interfaces */ 212 u_long ifi_ibytes; /* total number of octets received */ 213 u_long ifi_obytes; /* total number of octets sent */ 214 u_long ifi_imcasts; /* packets received via multicast */ 215 u_long ifi_omcasts; /* packets sent via multicast */ 216 u_long ifi_iqdrops; /* dropped on input, this interface */ 217 u_long ifi_noproto; /* destined for unsupported protocol */ 218 struct timeval ifi_lastchange; /* last operational state change */ 219 }; 220 #endif /* _KERNEL && COMPAT_14 */ 221 222 /* 223 * Structure defining a queue for a network interface. 224 */ 225 struct ifqueue { 226 struct mbuf *ifq_head; 227 struct mbuf *ifq_tail; 228 int ifq_len; 229 int ifq_maxlen; 230 int ifq_drops; 231 }; 232 233 /* 234 * Structure defining a queue for a network interface. 235 * 236 * (Would like to call this struct ``if'', but C isn't PL/1.) 237 */ 238 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 239 240 struct ifnet { /* and the entries */ 241 void *if_softc; /* lower-level data for this if */ 242 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 243 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 244 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 245 int if_pcount; /* number of promiscuous listeners */ 246 caddr_t if_bpf; /* packet filter structure */ 247 u_short if_index; /* numeric abbreviation for this if */ 248 short if_timer; /* time 'til if_watchdog called */ 249 short if_flags; /* up/down, broadcast, etc. */ 250 short if__pad1; /* be nice to m68k ports */ 251 struct if_data if_data; /* statistics and other data about if */ 252 /* 253 * Procedure handles. If you add more of these, don't forget the 254 * corresponding NULL stub in if.c. 255 */ 256 int (*if_output) /* output routine (enqueue) */ 257 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 258 struct rtentry *)); 259 void (*if_input) /* input routine (from h/w driver) */ 260 __P((struct ifnet *, struct mbuf *)); 261 void (*if_start) /* initiate output routine */ 262 __P((struct ifnet *)); 263 int (*if_ioctl) /* ioctl routine */ 264 __P((struct ifnet *, u_long, caddr_t)); 265 int (*if_init) /* init routine */ 266 __P((struct ifnet *)); 267 void (*if_stop) /* stop routine */ 268 __P((struct ifnet *, int)); 269 void (*if_watchdog) /* timer routine */ 270 __P((struct ifnet *)); 271 void (*if_drain) /* routine to release resources */ 272 __P((struct ifnet *)); 273 struct ifaltq if_snd; /* output queue (includes altq) */ 274 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 275 const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */ 276 void *if_bridge; /* bridge glue */ 277 int if_dlt; /* data link type (<net/dlt.h>) */ 278 struct pfil_head if_pfil; /* filtering point */ 279 uint64_t if_capabilities; /* interface capabilities */ 280 uint64_t if_capenable; /* capabilities enabled */ 281 282 /* 283 * These are pre-computed based on an interfaces enabled 284 * capabilities, for speed elsewhere. 285 */ 286 int if_csum_flags_tx; /* M_CSUM_* flags for Tx */ 287 int if_csum_flags_rx; /* M_CSUM_* flags for Rx */ 288 289 void *if_afdata[AF_MAX]; 290 struct mowner *if_mowner; /* who owns mbufs for this interface */ 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 #define IFCAP_TSOv4 0x0080 /* can do TCPv4 segmentation offload */ 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 #ifndef IFQ_MAXLEN 401 #define IFQ_MAXLEN 256 402 #endif 403 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 404 405 /* 406 * Structure defining statistics and other data kept regarding an address 407 * on a network interface. 408 */ 409 struct ifaddr_data { 410 int64_t ifad_inbytes; 411 int64_t ifad_outbytes; 412 }; 413 414 /* 415 * The ifaddr structure contains information about one address 416 * of an interface. They are maintained by the different address families, 417 * are allocated and attached when an address is set, and are linked 418 * together so all addresses for an interface can be located. 419 */ 420 struct ifaddr { 421 struct sockaddr *ifa_addr; /* address of interface */ 422 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 423 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 424 struct sockaddr *ifa_netmask; /* used to determine subnet */ 425 struct ifnet *ifa_ifp; /* back-pointer to interface */ 426 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 427 struct ifaddr_data ifa_data; /* statistics on the address */ 428 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 429 __P((int, struct rtentry *, struct rt_addrinfo *)); 430 u_int ifa_flags; /* mostly rt_flags for cloning */ 431 int ifa_refcnt; /* count of references */ 432 int ifa_metric; /* cost of going out this interface */ 433 }; 434 #define IFA_ROUTE RTF_UP /* 0x01 *//* route installed */ 435 436 /* 437 * Message format for use in obtaining information about interfaces 438 * from sysctl and the routing socket. 439 */ 440 struct if_msghdr { 441 u_short ifm_msglen; /* to skip over non-understood messages */ 442 u_char ifm_version; /* future binary compatibility */ 443 u_char ifm_type; /* message type */ 444 int ifm_addrs; /* like rtm_addrs */ 445 int ifm_flags; /* value of if_flags */ 446 u_short ifm_index; /* index for associated ifp */ 447 struct if_data ifm_data;/* statistics and other data about if */ 448 }; 449 450 #if defined(_KERNEL) && defined(COMPAT_14) 451 /* pre-1.5 if_msghdr (ifm_data changed) */ 452 struct if_msghdr14 { 453 u_short ifm_msglen; /* to skip over non-understood messages */ 454 u_char ifm_version; /* future binary compatibility */ 455 u_char ifm_type; /* message type */ 456 int ifm_addrs; /* like rtm_addrs */ 457 int ifm_flags; /* value of if_flags */ 458 u_short ifm_index; /* index for associated ifp */ 459 struct if_data14 ifm_data; /* statistics and other data about if */ 460 }; 461 #endif /* _KERNEL && COMPAT_14 */ 462 463 /* 464 * Message format for use in obtaining information about interface addresses 465 * from sysctl and the routing socket. 466 */ 467 struct ifa_msghdr { 468 u_short ifam_msglen; /* to skip over non-understood messages */ 469 u_char ifam_version; /* future binary compatibility */ 470 u_char ifam_type; /* message type */ 471 int ifam_addrs; /* like rtm_addrs */ 472 int ifam_flags; /* value of ifa_flags */ 473 u_short ifam_index; /* index for associated ifp */ 474 int ifam_metric; /* value of ifa_metric */ 475 }; 476 477 /* 478 * Message format announcing the arrival or departure of a network interface. 479 */ 480 struct if_announcemsghdr { 481 u_short ifan_msglen; /* to skip over non-understood messages */ 482 u_char ifan_version; /* future binary compatibility */ 483 u_char ifan_type; /* message type */ 484 u_short ifan_index; /* index for associated ifp */ 485 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 486 u_short ifan_what; /* what type of announcement */ 487 }; 488 489 #define IFAN_ARRIVAL 0 /* interface arrival */ 490 #define IFAN_DEPARTURE 1 /* interface departure */ 491 492 /* 493 * Interface request structure used for socket 494 * ioctl's. All interface ioctl's must have parameter 495 * definitions which begin with ifr_name. The 496 * remainder may be interface specific. 497 */ 498 struct ifreq { 499 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 500 union { 501 struct sockaddr ifru_addr; 502 struct sockaddr ifru_dstaddr; 503 struct sockaddr ifru_broadaddr; 504 short ifru_flags; 505 int ifru_metric; 506 int ifru_mtu; 507 int ifru_dlt; 508 u_int ifru_value; 509 caddr_t ifru_data; 510 } ifr_ifru; 511 #define ifr_addr ifr_ifru.ifru_addr /* address */ 512 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 513 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 514 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 515 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 516 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 517 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 518 #define ifr_value ifr_ifru.ifru_value /* generic value */ 519 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 520 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 521 }; 522 523 struct ifcapreq { 524 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 525 uint64_t ifcr_capabilities; /* supported capabiliites */ 526 uint64_t ifcr_capenable; /* capabilities enabled */ 527 }; 528 529 struct ifaliasreq { 530 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 531 struct sockaddr ifra_addr; 532 struct sockaddr ifra_dstaddr; 533 #define ifra_broadaddr ifra_dstaddr 534 struct sockaddr ifra_mask; 535 }; 536 537 struct ifdatareq { 538 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 539 struct if_data ifdr_data; 540 }; 541 542 struct ifmediareq { 543 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 544 int ifm_current; /* current media options */ 545 int ifm_mask; /* don't care mask */ 546 int ifm_status; /* media status */ 547 int ifm_active; /* active options */ 548 int ifm_count; /* # entries in ifm_ulist 549 array */ 550 int *ifm_ulist; /* media words */ 551 }; 552 553 554 struct ifdrv { 555 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 556 unsigned long ifd_cmd; 557 size_t ifd_len; 558 void *ifd_data; 559 }; 560 561 /* 562 * Structure used in SIOCGIFCONF request. 563 * Used to retrieve interface configuration 564 * for machine (useful for programs which 565 * must know all networks accessible). 566 */ 567 struct ifconf { 568 int ifc_len; /* size of associated buffer */ 569 union { 570 caddr_t ifcu_buf; 571 struct ifreq *ifcu_req; 572 } ifc_ifcu; 573 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 574 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 575 }; 576 577 /* 578 * Structure for SIOC[AGD]LIFADDR 579 */ 580 struct if_laddrreq { 581 char iflr_name[IFNAMSIZ]; 582 unsigned int flags; 583 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 584 unsigned int prefixlen; /* in/out */ 585 struct sockaddr_storage addr; /* in/out */ 586 struct sockaddr_storage dstaddr; /* out */ 587 }; 588 589 #include <net/if_arp.h> 590 591 #endif /* _NETBSD_SOURCE */ 592 593 #ifdef _KERNEL 594 #ifdef IFAREF_DEBUG 595 #define IFAREF(ifa) \ 596 do { \ 597 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 598 (ifa), ++(ifa)->ifa_refcnt); \ 599 } while (/*CONSTCOND*/ 0) 600 601 #define IFAFREE(ifa) \ 602 do { \ 603 if ((ifa)->ifa_refcnt <= 0) \ 604 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 605 __LINE__, (ifa)); \ 606 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 607 (ifa), --(ifa)->ifa_refcnt); \ 608 if ((ifa)->ifa_refcnt == 0) \ 609 ifafree(ifa); \ 610 } while (/*CONSTCOND*/ 0) 611 #else 612 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 613 614 #ifdef DIAGNOSTIC 615 #define IFAFREE(ifa) \ 616 do { \ 617 if ((ifa)->ifa_refcnt <= 0) \ 618 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 619 __LINE__, (ifa)); \ 620 if (--(ifa)->ifa_refcnt == 0) \ 621 ifafree(ifa); \ 622 } while (/*CONSTCOND*/ 0) 623 #else 624 #define IFAFREE(ifa) \ 625 do { \ 626 if (--(ifa)->ifa_refcnt == 0) \ 627 ifafree(ifa); \ 628 } while (/*CONSTCOND*/ 0) 629 #endif /* DIAGNOSTIC */ 630 #endif /* IFAREF_DEBUG */ 631 632 #ifdef ALTQ 633 #define ALTQ_DECL(x) x 634 635 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 636 do { \ 637 if (ALTQ_IS_ENABLED((ifq))) \ 638 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 639 else { \ 640 if (IF_QFULL((ifq))) { \ 641 m_freem((m)); \ 642 (err) = ENOBUFS; \ 643 } else { \ 644 IF_ENQUEUE((ifq), (m)); \ 645 (err) = 0; \ 646 } \ 647 } \ 648 if ((err)) \ 649 (ifq)->ifq_drops++; \ 650 } while (/*CONSTCOND*/ 0) 651 652 #define IFQ_DEQUEUE(ifq, m) \ 653 do { \ 654 if (TBR_IS_ENABLED((ifq))) \ 655 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 656 else if (ALTQ_IS_ENABLED((ifq))) \ 657 ALTQ_DEQUEUE((ifq), (m)); \ 658 else \ 659 IF_DEQUEUE((ifq), (m)); \ 660 } while (/*CONSTCOND*/ 0) 661 662 #define IFQ_POLL(ifq, m) \ 663 do { \ 664 if (TBR_IS_ENABLED((ifq))) \ 665 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 666 else if (ALTQ_IS_ENABLED((ifq))) \ 667 ALTQ_POLL((ifq), (m)); \ 668 else \ 669 IF_POLL((ifq), (m)); \ 670 } while (/*CONSTCOND*/ 0) 671 672 #define IFQ_PURGE(ifq) \ 673 do { \ 674 if (ALTQ_IS_ENABLED((ifq))) \ 675 ALTQ_PURGE((ifq)); \ 676 else \ 677 IF_PURGE((ifq)); \ 678 } while (/*CONSTCOND*/ 0) 679 680 #define IFQ_SET_READY(ifq) \ 681 do { \ 682 (ifq)->altq_flags |= ALTQF_READY; \ 683 } while (/*CONSTCOND*/ 0) 684 685 #define IFQ_CLASSIFY(ifq, m, af, pa) \ 686 do { \ 687 if (ALTQ_IS_ENABLED((ifq))) { \ 688 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 689 (pa)->pattr_class = (*(ifq)->altq_classify) \ 690 ((ifq)->altq_clfier, (m), (af)); \ 691 (pa)->pattr_af = (af); \ 692 (pa)->pattr_hdr = mtod((m), caddr_t); \ 693 } \ 694 } while (/*CONSTCOND*/ 0) 695 #else /* ! ALTQ */ 696 #define ALTQ_DECL(x) /* nothing */ 697 698 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 699 do { \ 700 if (IF_QFULL((ifq))) { \ 701 m_freem((m)); \ 702 (err) = ENOBUFS; \ 703 } else { \ 704 IF_ENQUEUE((ifq), (m)); \ 705 (err) = 0; \ 706 } \ 707 if ((err)) \ 708 (ifq)->ifq_drops++; \ 709 } while (/*CONSTCOND*/ 0) 710 711 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 712 713 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 714 715 #define IFQ_PURGE(ifq) IF_PURGE((ifq)) 716 717 #define IFQ_SET_READY(ifq) /* nothing */ 718 719 #define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 720 721 #endif /* ALTQ */ 722 723 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 724 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 725 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 726 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 727 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 728 729 #include <sys/mallocvar.h> 730 MALLOC_DECLARE(M_IFADDR); 731 MALLOC_DECLARE(M_IFMADDR); 732 733 #define IFNET_FOREACH(ifp) TAILQ_FOREACH(ifp, &ifnet, if_list) 734 #define IFADDR_FOREACH(ifa, ifp) TAILQ_FOREACH(ifa, \ 735 &(ifp)->if_addrlist, ifa_list) 736 737 extern struct ifnet_head ifnet; 738 extern struct ifnet **ifindex2ifnet; 739 extern struct ifnet *lo0ifp; 740 extern size_t if_indexlim; 741 742 char *ether_sprintf __P((const u_char *)); 743 744 void if_alloc_sadl __P((struct ifnet *)); 745 void if_free_sadl __P((struct ifnet *)); 746 void if_attach __P((struct ifnet *)); 747 void if_attachdomain __P((void)); 748 void if_attachdomain1 __P((struct ifnet *)); 749 void if_deactivate __P((struct ifnet *)); 750 void if_detach __P((struct ifnet *)); 751 void if_down __P((struct ifnet *)); 752 void if_slowtimo __P((void *)); 753 void if_up __P((struct ifnet *)); 754 int ifconf __P((u_long, caddr_t)); 755 void ifinit __P((void)); 756 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 757 int ifpromisc __P((struct ifnet *, int)); 758 struct ifnet *ifunit __P((const char *)); 759 760 struct ifaddr *ifa_ifwithaddr __P((const struct sockaddr *)); 761 struct ifaddr *ifa_ifwithaf __P((int)); 762 struct ifaddr *ifa_ifwithdstaddr __P((const struct sockaddr *)); 763 struct ifaddr *ifa_ifwithnet __P((const struct sockaddr *)); 764 struct ifaddr *ifa_ifwithladdr __P((const struct sockaddr *)); 765 struct ifaddr *ifa_ifwithroute __P((int, const struct sockaddr *, 766 const struct sockaddr *)); 767 struct ifaddr *ifaof_ifpforaddr __P((const struct sockaddr *, struct ifnet *)); 768 void ifafree __P((struct ifaddr *)); 769 void link_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 770 771 void if_clone_attach __P((struct if_clone *)); 772 void if_clone_detach __P((struct if_clone *)); 773 774 int if_clone_create __P((const char *)); 775 int if_clone_destroy __P((const char *)); 776 777 int loioctl __P((struct ifnet *, u_long, caddr_t)); 778 void loopattach __P((int)); 779 int looutput __P((struct ifnet *, 780 struct mbuf *, struct sockaddr *, struct rtentry *)); 781 void lortrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 782 783 /* 784 * These are exported because they're an easy way to tell if 785 * an interface is going away without having to burn a flag. 786 */ 787 int if_nulloutput __P((struct ifnet *, struct mbuf *, 788 struct sockaddr *, struct rtentry *)); 789 void if_nullinput __P((struct ifnet *, struct mbuf *)); 790 void if_nullstart __P((struct ifnet *)); 791 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 792 int if_nullinit __P((struct ifnet *)); 793 void if_nullstop __P((struct ifnet *, int)); 794 void if_nullwatchdog __P((struct ifnet *)); 795 void if_nulldrain __P((struct ifnet *)); 796 #else 797 struct if_nameindex { 798 unsigned int if_index; /* 1, 2, ... */ 799 char *if_name; /* null terminated name: "le0", ... */ 800 }; 801 802 #include <sys/cdefs.h> 803 __BEGIN_DECLS 804 unsigned int if_nametoindex __P((const char *)); 805 char * if_indextoname __P((unsigned int, char *)); 806 struct if_nameindex * if_nameindex __P((void)); 807 void if_freenameindex __P((struct if_nameindex *)); 808 __END_DECLS 809 #endif /* _KERNEL */ /* XXX really ALTQ? */ 810 811 #ifdef _KERNEL 812 /* 813 * ifq sysctl support 814 */ 815 int sysctl_ifq __P((int *name, u_int namelen, void *oldp, 816 size_t *oldlenp, void *newp, size_t newlen, 817 struct ifqueue *ifq)); 818 /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 819 #define IFQCTL_LEN 1 820 #define IFQCTL_MAXLEN 2 821 #define IFQCTL_PEAK 3 822 #define IFQCTL_DROPS 4 823 #define IFQCTL_MAXID 5 824 825 #endif /* _KERNEL */ 826 827 #ifdef _NETBSD_SOURCE 828 /* 829 * sysctl for ifq (per-protocol packet input queue variant of ifqueue) 830 */ 831 #define CTL_IFQ_NAMES { \ 832 { 0, 0 }, \ 833 { "len", CTLTYPE_INT }, \ 834 { "maxlen", CTLTYPE_INT }, \ 835 { "peak", CTLTYPE_INT }, \ 836 { "drops", CTLTYPE_INT }, \ 837 } 838 #endif /* _NETBSD_SOURCE */ 839 #endif /* !_NET_IF_H_ */ 840
Indexes created Wed Sep 24 22:09:59 GMT 2025