1 /* $NetBSD: if.h,v 1.206 2016/05/16 01:16:24 ozaki-r 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 Studenmund 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1982, 1986, 1989, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)if.h 8.3 (Berkeley) 2/9/95 61 */ 62 63 #ifndef _NET_IF_H_ 64 #define _NET_IF_H_ 65 66 #if !defined(_KERNEL) && !defined(_STANDALONE) 67 #include <stdbool.h> 68 #endif 69 70 #include <sys/featuretest.h> 71 72 /* 73 * Length of interface external name, including terminating '\0'. 74 * Note: this is the same size as a generic device's external name. 75 */ 76 #define IF_NAMESIZE 16 77 78 #if defined(_NETBSD_SOURCE) 79 80 #include <sys/socket.h> 81 #include <sys/queue.h> 82 #include <sys/mutex.h> 83 84 #include <net/dlt.h> 85 #include <net/pfil.h> 86 #ifdef _KERNEL 87 #include <net/pktqueue.h> 88 #include <sys/pslist.h> 89 #include <sys/pserialize.h> 90 #include <sys/psref.h> 91 #endif 92 93 /* 94 * Always include ALTQ glue here -- we use the ALTQ interface queue 95 * structure even when ALTQ is not configured into the kernel so that 96 * the size of struct ifnet does not changed based on the option. The 97 * ALTQ queue structure is API-compatible with the legacy ifqueue. 98 */ 99 #include <altq/if_altq.h> 100 101 /* 102 * Structures defining a network interface, providing a packet 103 * transport mechanism (ala level 0 of the PUP protocols). 104 * 105 * Each interface accepts output datagrams of a specified maximum 106 * length, and provides higher level routines with input datagrams 107 * received from its medium. 108 * 109 * Output occurs when the routine if_output is called, with four parameters: 110 * (*ifp->if_output)(ifp, m, dst, rt) 111 * Here m is the mbuf chain to be sent and dst is the destination address. 112 * The output routine encapsulates the supplied datagram if necessary, 113 * and then transmits it on its medium. 114 * 115 * On input, each interface unwraps the data received by it, and either 116 * places it on the input queue of a internetwork datagram routine 117 * and posts the associated software interrupt, or passes the datagram to a raw 118 * packet input routine. 119 * 120 * Routines exist for locating interfaces by their addresses 121 * or for locating a interface on a certain network, as well as more general 122 * routing and gateway routines maintaining information used to locate 123 * interfaces. These routines live in the files if.c and route.c 124 */ 125 #include <sys/time.h> 126 127 #if defined(_KERNEL_OPT) 128 #include "opt_compat_netbsd.h" 129 #include "opt_gateway.h" 130 #endif 131 132 struct mbuf; 133 struct proc; 134 struct rtentry; 135 struct socket; 136 struct ether_header; 137 struct ifaddr; 138 struct ifnet; 139 struct rt_addrinfo; 140 141 #define IFNAMSIZ IF_NAMESIZE 142 143 /* 144 * Structure describing a `cloning' interface. 145 */ 146 struct if_clone { 147 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 148 const char *ifc_name; /* name of device, e.g. `gif' */ 149 size_t ifc_namelen; /* length of name */ 150 151 int (*ifc_create)(struct if_clone *, int); 152 int (*ifc_destroy)(struct ifnet *); 153 }; 154 155 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 156 { { NULL, NULL }, name, sizeof(name) - 1, create, destroy } 157 158 /* 159 * Structure used to query names of interface cloners. 160 */ 161 struct if_clonereq { 162 int ifcr_total; /* total cloners (out) */ 163 int ifcr_count; /* room for this many in user buffer */ 164 char *ifcr_buffer; /* buffer for cloner names */ 165 }; 166 167 /* 168 * Structure defining statistics and other data kept regarding a network 169 * interface. 170 */ 171 struct if_data { 172 /* generic interface information */ 173 u_char ifi_type; /* ethernet, tokenring, etc. */ 174 u_char ifi_addrlen; /* media address length */ 175 u_char ifi_hdrlen; /* media header length */ 176 int ifi_link_state; /* current link state */ 177 uint64_t ifi_mtu; /* maximum transmission unit */ 178 uint64_t ifi_metric; /* routing metric (external only) */ 179 uint64_t ifi_baudrate; /* linespeed */ 180 /* volatile statistics */ 181 uint64_t ifi_ipackets; /* packets received on interface */ 182 uint64_t ifi_ierrors; /* input errors on interface */ 183 uint64_t ifi_opackets; /* packets sent on interface */ 184 uint64_t ifi_oerrors; /* output errors on interface */ 185 uint64_t ifi_collisions; /* collisions on csma interfaces */ 186 uint64_t ifi_ibytes; /* total number of octets received */ 187 uint64_t ifi_obytes; /* total number of octets sent */ 188 uint64_t ifi_imcasts; /* packets received via multicast */ 189 uint64_t ifi_omcasts; /* packets sent via multicast */ 190 uint64_t ifi_iqdrops; /* dropped on input, this interface */ 191 uint64_t ifi_noproto; /* destined for unsupported protocol */ 192 struct timespec ifi_lastchange;/* last operational state change */ 193 }; 194 195 /* 196 * Values for if_link_state. 197 */ 198 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 199 #define LINK_STATE_DOWN 1 /* link is down */ 200 #define LINK_STATE_UP 2 /* link is up */ 201 202 /* 203 * Structure defining a queue for a network interface. 204 */ 205 struct ifqueue { 206 struct mbuf *ifq_head; 207 struct mbuf *ifq_tail; 208 int ifq_len; 209 int ifq_maxlen; 210 int ifq_drops; 211 kmutex_t *ifq_lock; 212 }; 213 214 #ifdef _KERNEL 215 #include <sys/percpu.h> 216 #include <sys/callout.h> 217 #include <sys/rwlock.h> 218 219 #endif /* _KERNEL */ 220 221 /* 222 * Structure defining a queue for a network interface. 223 * 224 * (Would like to call this struct ``if'', but C isn't PL/1.) 225 */ 226 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 227 228 struct bridge_softc; 229 struct bridge_iflist; 230 struct callout; 231 struct krwlock; 232 struct if_percpuq; 233 234 typedef struct ifnet { 235 void *if_softc; /* lower-level data for this if */ 236 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */ 237 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 238 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 239 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 240 int if_pcount; /* number of promiscuous listeners */ 241 struct bpf_if *if_bpf; /* packet filter structure */ 242 u_short if_index; /* numeric abbreviation for this if */ 243 short if_timer; /* time 'til if_slowtimo called */ 244 short if_flags; /* up/down, broadcast, etc. */ 245 short if__pad1; /* be nice to m68k ports */ 246 struct if_data if_data; /* statistics and other data about if */ 247 /* 248 * Procedure handles. If you add more of these, don't forget the 249 * corresponding NULL stub in if.c. 250 */ 251 int (*if_output) /* output routine (enqueue) */ 252 (struct ifnet *, struct mbuf *, const struct sockaddr *, 253 const struct rtentry *); 254 void (*_if_input) /* input routine (from h/w driver) */ 255 (struct ifnet *, struct mbuf *); 256 void (*if_start) /* initiate output routine */ 257 (struct ifnet *); 258 int (*if_transmit) /* output routine (direct) */ 259 (struct ifnet *, struct mbuf *); 260 int (*if_ioctl) /* ioctl routine */ 261 (struct ifnet *, u_long, void *); 262 int (*if_init) /* init routine */ 263 (struct ifnet *); 264 void (*if_stop) /* stop routine */ 265 (struct ifnet *, int); 266 void (*if_slowtimo) /* timer routine */ 267 (struct ifnet *); 268 #define if_watchdog if_slowtimo 269 void (*if_drain) /* routine to release resources */ 270 (struct ifnet *); 271 struct ifaltq if_snd; /* output queue (includes altq) */ 272 struct ifaddr *if_dl; /* identity of this interface. */ 273 const struct sockaddr_dl *if_sadl; /* pointer to sockaddr_dl 274 * of if_dl 275 */ 276 /* if_hwdl: h/w identity 277 * 278 * May be NULL. If not NULL, it is the address assigned 279 * to the interface by the manufacturer, so it very likely 280 * to be unique. It MUST NOT be deleted. It is highly 281 * suitable for deriving the EUI64 for the interface. 282 */ 283 struct ifaddr *if_hwdl; 284 const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */ 285 struct bridge_softc *if_bridge; /* bridge glue */ 286 struct bridge_iflist *if_bridgeif; /* shortcut to interface list entry */ 287 int if_dlt; /* data link type (<net/dlt.h>) */ 288 pfil_head_t * if_pfil; /* filtering point */ 289 uint64_t if_capabilities; /* interface capabilities */ 290 uint64_t if_capenable; /* capabilities enabled */ 291 union { 292 void * carp_s; /* carp structure (used by !carp ifs) */ 293 struct ifnet *carp_d;/* ptr to carpdev (used by carp ifs) */ 294 } if_carp_ptr; 295 #define if_carp if_carp_ptr.carp_s 296 #define if_carpdev if_carp_ptr.carp_d 297 /* 298 * These are pre-computed based on an interfaces enabled 299 * capabilities, for speed elsewhere. 300 */ 301 int if_csum_flags_tx; /* M_CSUM_* flags for Tx */ 302 int if_csum_flags_rx; /* M_CSUM_* flags for Rx */ 303 304 void *if_afdata[AF_MAX]; 305 struct mowner *if_mowner; /* who owns mbufs for this interface */ 306 307 void *if_agrprivate; /* used only when #if NAGR > 0 */ 308 309 /* 310 * pf specific data, used only when #if NPF > 0. 311 */ 312 void *if_pf_kif; /* pf interface abstraction */ 313 void *if_pf_groups; /* pf interface groups */ 314 /* 315 * During an ifnet's lifetime, it has only one if_index, but 316 * and if_index is not sufficient to identify an ifnet 317 * because during the lifetime of the system, many ifnets may occupy a 318 * given if_index. Let us tell different ifnets at the same 319 * if_index apart by their if_index_gen, a unique number that each ifnet 320 * is assigned when it if_attach()s. Now, the kernel can use the 321 * pair (if_index, if_index_gen) as a weak reference to an ifnet. 322 */ 323 uint64_t if_index_gen; /* generation number for the ifnet 324 * at if_index: if two ifnets' index 325 * and generation number are both the 326 * same, they are the same ifnet. 327 */ 328 struct sysctllog *if_sysctl_log; 329 int (*if_initaddr)(struct ifnet *, struct ifaddr *, bool); 330 int (*if_mcastop)(struct ifnet *, const unsigned long, 331 const struct sockaddr *); 332 int (*if_setflags)(struct ifnet *, const short); 333 kmutex_t *if_ioctl_lock; 334 #ifdef _KERNEL /* XXX kvm(3) */ 335 struct callout *if_slowtimo_ch; 336 struct krwlock *if_afdata_lock; 337 struct if_percpuq *if_percpuq; /* We should remove it in the future */ 338 void *if_link_si; /* softint to handle link state changes */ 339 uint16_t if_link_queue; /* masked link state change queue */ 340 struct pslist_entry if_pslist_entry; 341 struct psref_target if_psref; 342 #endif 343 } ifnet_t; 344 345 #define if_mtu if_data.ifi_mtu 346 #define if_type if_data.ifi_type 347 #define if_addrlen if_data.ifi_addrlen 348 #define if_hdrlen if_data.ifi_hdrlen 349 #define if_metric if_data.ifi_metric 350 #define if_link_state if_data.ifi_link_state 351 #define if_baudrate if_data.ifi_baudrate 352 #define if_ipackets if_data.ifi_ipackets 353 #define if_ierrors if_data.ifi_ierrors 354 #define if_opackets if_data.ifi_opackets 355 #define if_oerrors if_data.ifi_oerrors 356 #define if_collisions if_data.ifi_collisions 357 #define if_ibytes if_data.ifi_ibytes 358 #define if_obytes if_data.ifi_obytes 359 #define if_imcasts if_data.ifi_imcasts 360 #define if_omcasts if_data.ifi_omcasts 361 #define if_iqdrops if_data.ifi_iqdrops 362 #define if_noproto if_data.ifi_noproto 363 #define if_lastchange if_data.ifi_lastchange 364 365 #define IFF_UP 0x0001 /* interface is up */ 366 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 367 #define IFF_DEBUG 0x0004 /* turn on debugging */ 368 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 369 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 370 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */ 371 #define IFF_RUNNING 0x0040 /* resources allocated */ 372 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 373 #define IFF_PROMISC 0x0100 /* receive all packets */ 374 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 375 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 376 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 377 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 378 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 379 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 380 #define IFF_MULTICAST 0x8000 /* supports multicast */ 381 382 #define IFFBITS \ 383 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS" \ 384 "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \ 385 "\15LINK0\16LINK1\17LINK2\20MULTICAST" 386 387 /* flags set internally only: */ 388 #define IFF_CANTCHANGE \ 389 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 390 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 391 392 /* 393 * Some convenience macros used for setting ifi_baudrate. 394 */ 395 #define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */ 396 #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ 397 #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */ 398 399 /* Capabilities that interfaces can advertise. */ 400 /* 0x01 .. 0x40 were previously used */ 401 #define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */ 402 #define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */ 403 #define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */ 404 #define IFCAP_CSUM_TCPv4_Rx 0x00400 /* can do IPv4/TCP checksums (Rx) */ 405 #define IFCAP_CSUM_TCPv4_Tx 0x00800 /* can do IPv4/TCP checksums (Tx) */ 406 #define IFCAP_CSUM_UDPv4_Rx 0x01000 /* can do IPv4/UDP checksums (Rx) */ 407 #define IFCAP_CSUM_UDPv4_Tx 0x02000 /* can do IPv4/UDP checksums (Tx) */ 408 #define IFCAP_CSUM_TCPv6_Rx 0x04000 /* can do IPv6/TCP checksums (Rx) */ 409 #define IFCAP_CSUM_TCPv6_Tx 0x08000 /* can do IPv6/TCP checksums (Tx) */ 410 #define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */ 411 #define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */ 412 #define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */ 413 #define IFCAP_LRO 0x80000 /* can do Large Receive Offload */ 414 #define IFCAP_MASK 0xfff80 /* currently valid capabilities */ 415 416 #define IFCAPBITS \ 417 "\020" \ 418 "\10TSO4" \ 419 "\11IP4CSUM_Rx" \ 420 "\12IP4CSUM_Tx" \ 421 "\13TCP4CSUM_Rx" \ 422 "\14TCP4CSUM_Tx" \ 423 "\15UDP4CSUM_Rx" \ 424 "\16UDP4CSUM_Tx" \ 425 "\17TCP6CSUM_Rx" \ 426 "\20TCP6CSUM_Tx" \ 427 "\21UDP6CSUM_Rx" \ 428 "\22UDP6CSUM_Tx" \ 429 "\23TSO6" \ 430 "\24LRO" \ 431 432 #define IF_AFDATA_LOCK_INIT(ifp) \ 433 do {(ifp)->if_afdata_lock = rw_obj_alloc();} while (0) 434 435 #define IF_AFDATA_LOCK_DESTROY(ifp) rw_obj_free((ifp)->if_afdata_lock) 436 437 #define IF_AFDATA_WLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_WRITER) 438 #define IF_AFDATA_RLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_READER) 439 #define IF_AFDATA_WUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 440 #define IF_AFDATA_RUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 441 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 442 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 443 #define IF_AFDATA_TRYLOCK(ifp) rw_tryenter((ifp)->if_afdata_lock, RW_WRITER) 444 445 #define IF_AFDATA_LOCK_ASSERT(ifp) \ 446 KASSERT(rw_lock_held((ifp)->if_afdata_lock)) 447 #define IF_AFDATA_RLOCK_ASSERT(ifp) \ 448 KASSERT(rw_read_held((ifp)->if_afdata_lock)) 449 #define IF_AFDATA_WLOCK_ASSERT(ifp) \ 450 KASSERT(rw_write_held((ifp)->if_afdata_lock)) 451 #define IF_AFDATA_UNLOCK_ASSERT(ifp) \ 452 KASSERT(!rw_lock_held((ifp)->if_afdata_lock)) 453 454 #define IFQ_LOCK(_ifq) if ((_ifq)->ifq_lock) mutex_enter((_ifq)->ifq_lock) 455 #define IFQ_UNLOCK(_ifq) if ((_ifq)->ifq_lock) mutex_exit((_ifq)->ifq_lock) 456 457 /* 458 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 459 * input routines have queues of messages stored on ifqueue structures 460 * (defined above). Entries are added to and deleted from these structures 461 * by these macros, which should be called with ipl raised to splnet(). 462 */ 463 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 464 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 465 #define IF_ENQUEUE(ifq, m) do { \ 466 (m)->m_nextpkt = 0; \ 467 if ((ifq)->ifq_tail == 0) \ 468 (ifq)->ifq_head = m; \ 469 else \ 470 (ifq)->ifq_tail->m_nextpkt = m; \ 471 (ifq)->ifq_tail = m; \ 472 (ifq)->ifq_len++; \ 473 } while (/*CONSTCOND*/0) 474 #define IF_PREPEND(ifq, m) do { \ 475 (m)->m_nextpkt = (ifq)->ifq_head; \ 476 if ((ifq)->ifq_tail == 0) \ 477 (ifq)->ifq_tail = (m); \ 478 (ifq)->ifq_head = (m); \ 479 (ifq)->ifq_len++; \ 480 } while (/*CONSTCOND*/0) 481 #define IF_DEQUEUE(ifq, m) do { \ 482 (m) = (ifq)->ifq_head; \ 483 if (m) { \ 484 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 485 (ifq)->ifq_tail = 0; \ 486 (m)->m_nextpkt = 0; \ 487 (ifq)->ifq_len--; \ 488 } \ 489 } while (/*CONSTCOND*/0) 490 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 491 #define IF_PURGE(ifq) \ 492 do { \ 493 struct mbuf *__m0; \ 494 \ 495 for (;;) { \ 496 IF_DEQUEUE((ifq), __m0); \ 497 if (__m0 == NULL) \ 498 break; \ 499 else \ 500 m_freem(__m0); \ 501 } \ 502 } while (/*CONSTCOND*/ 0) 503 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 504 505 #ifndef IFQ_MAXLEN 506 #define IFQ_MAXLEN 256 507 #endif 508 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 509 510 /* 511 * Structure defining statistics and other data kept regarding an address 512 * on a network interface. 513 */ 514 struct ifaddr_data { 515 int64_t ifad_inbytes; 516 int64_t ifad_outbytes; 517 }; 518 519 /* 520 * The ifaddr structure contains information about one address 521 * of an interface. They are maintained by the different address families, 522 * are allocated and attached when an address is set, and are linked 523 * together so all addresses for an interface can be located. 524 */ 525 struct ifaddr { 526 struct sockaddr *ifa_addr; /* address of interface */ 527 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 528 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 529 struct sockaddr *ifa_netmask; /* used to determine subnet */ 530 struct ifnet *ifa_ifp; /* back-pointer to interface */ 531 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 532 struct ifaddr_data ifa_data; /* statistics on the address */ 533 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 534 (int, struct rtentry *, const struct rt_addrinfo *); 535 u_int ifa_flags; /* mostly rt_flags for cloning */ 536 int ifa_refcnt; /* count of references */ 537 int ifa_metric; /* cost of going out this interface */ 538 struct ifaddr *(*ifa_getifa)(struct ifaddr *, 539 const struct sockaddr *); 540 uint32_t *ifa_seqno; 541 int16_t ifa_preference; /* preference level for this address */ 542 }; 543 #define IFA_ROUTE RTF_UP /* (0x01) route installed */ 544 545 /* 546 * Message format for use in obtaining information about interfaces from 547 * sysctl and the routing socket. We need to force 64-bit alignment if we 548 * aren't using compatiblity definitons. 549 */ 550 #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK) 551 #define __align64 __aligned(sizeof(uint64_t)) 552 #else 553 #define __align64 554 #endif 555 struct if_msghdr { 556 u_short ifm_msglen __align64; 557 /* to skip over non-understood messages */ 558 u_char ifm_version; /* future binary compatibility */ 559 u_char ifm_type; /* message type */ 560 int ifm_addrs; /* like rtm_addrs */ 561 int ifm_flags; /* value of if_flags */ 562 u_short ifm_index; /* index for associated ifp */ 563 struct if_data ifm_data __align64; 564 /* statistics and other data about if */ 565 }; 566 567 /* 568 * Message format for use in obtaining information about interface addresses 569 * from sysctl and the routing socket. 570 */ 571 struct ifa_msghdr { 572 u_short ifam_msglen __align64; 573 /* to skip over non-understood messages */ 574 u_char ifam_version; /* future binary compatibility */ 575 u_char ifam_type; /* message type */ 576 int ifam_addrs; /* like rtm_addrs */ 577 int ifam_flags; /* value of ifa_flags */ 578 int ifam_metric; /* value of ifa_metric */ 579 u_short ifam_index; /* index for associated ifp */ 580 }; 581 582 /* 583 * Message format announcing the arrival or departure of a network interface. 584 */ 585 struct if_announcemsghdr { 586 u_short ifan_msglen __align64; 587 /* to skip over non-understood messages */ 588 u_char ifan_version; /* future binary compatibility */ 589 u_char ifan_type; /* message type */ 590 u_short ifan_index; /* index for associated ifp */ 591 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 592 u_short ifan_what; /* what type of announcement */ 593 }; 594 595 #define IFAN_ARRIVAL 0 /* interface arrival */ 596 #define IFAN_DEPARTURE 1 /* interface departure */ 597 598 #undef __align64 599 600 /* 601 * Interface request structure used for socket 602 * ioctl's. All interface ioctl's must have parameter 603 * definitions which begin with ifr_name. The 604 * remainder may be interface specific. 605 */ 606 struct ifreq { 607 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 608 union { 609 struct sockaddr ifru_addr; 610 struct sockaddr ifru_dstaddr; 611 struct sockaddr ifru_broadaddr; 612 struct sockaddr_storage ifru_space; 613 short ifru_flags; 614 int ifru_addrflags; 615 int ifru_metric; 616 int ifru_mtu; 617 int ifru_dlt; 618 u_int ifru_value; 619 void * ifru_data; 620 struct { 621 uint32_t b_buflen; 622 void *b_buf; 623 } ifru_b; 624 } ifr_ifru; 625 #define ifr_addr ifr_ifru.ifru_addr /* address */ 626 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 627 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 628 #define ifr_space ifr_ifru.ifru_space /* sockaddr_storage */ 629 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 630 #define ifr_addrflags ifr_ifru.ifru_addrflags /* addr flags */ 631 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 632 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 633 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 634 #define ifr_value ifr_ifru.ifru_value /* generic value */ 635 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 636 #define ifr_data ifr_ifru.ifru_data /* for use by interface 637 * XXX deprecated 638 */ 639 #define ifr_buf ifr_ifru.ifru_b.b_buf /* new interface ioctls */ 640 #define ifr_buflen ifr_ifru.ifru_b.b_buflen 641 #define ifr_index ifr_ifru.ifru_value /* interface index, BSD */ 642 #define ifr_ifindex ifr_index /* interface index, linux */ 643 }; 644 645 #ifdef _KERNEL 646 #define ifreq_setdstaddr ifreq_setaddr 647 #define ifreq_setbroadaddr ifreq_setaddr 648 #define ifreq_getdstaddr ifreq_getaddr 649 #define ifreq_getbroadaddr ifreq_getaddr 650 651 static inline const struct sockaddr * 652 /*ARGSUSED*/ 653 ifreq_getaddr(u_long cmd, const struct ifreq *ifr) 654 { 655 return &ifr->ifr_addr; 656 } 657 #endif /* _KERNEL */ 658 659 struct ifcapreq { 660 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 661 uint64_t ifcr_capabilities; /* supported capabiliites */ 662 uint64_t ifcr_capenable; /* capabilities enabled */ 663 }; 664 665 struct ifaliasreq { 666 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 667 struct sockaddr ifra_addr; 668 struct sockaddr ifra_dstaddr; 669 #define ifra_broadaddr ifra_dstaddr 670 struct sockaddr ifra_mask; 671 }; 672 673 struct ifdatareq { 674 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 675 struct if_data ifdr_data; 676 }; 677 678 struct ifmediareq { 679 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 680 int ifm_current; /* current media options */ 681 int ifm_mask; /* don't care mask */ 682 int ifm_status; /* media status */ 683 int ifm_active; /* active options */ 684 int ifm_count; /* # entries in ifm_ulist 685 array */ 686 int *ifm_ulist; /* media words */ 687 }; 688 689 690 struct ifdrv { 691 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 692 unsigned long ifd_cmd; 693 size_t ifd_len; 694 void *ifd_data; 695 }; 696 #define IFLINKSTR_QUERYLEN 0x01 697 #define IFLINKSTR_UNSET 0x02 698 699 /* 700 * Structure used in SIOCGIFCONF request. 701 * Used to retrieve interface configuration 702 * for machine (useful for programs which 703 * must know all networks accessible). 704 */ 705 struct ifconf { 706 int ifc_len; /* size of associated buffer */ 707 union { 708 void * ifcu_buf; 709 struct ifreq *ifcu_req; 710 } ifc_ifcu; 711 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 712 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 713 }; 714 715 /* 716 * Structure for SIOC[AGD]LIFADDR 717 */ 718 struct if_laddrreq { 719 char iflr_name[IFNAMSIZ]; 720 unsigned int flags; 721 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 722 #define IFLR_ACTIVE 0x4000 /* in/out: link-layer address activation */ 723 #define IFLR_FACTORY 0x2000 /* in/out: factory link-layer address */ 724 unsigned int prefixlen; /* in/out */ 725 struct sockaddr_storage addr; /* in/out */ 726 struct sockaddr_storage dstaddr; /* out */ 727 }; 728 729 /* 730 * Structure for SIOC[SG]IFADDRPREF 731 */ 732 struct if_addrprefreq { 733 char ifap_name[IFNAMSIZ]; 734 int16_t ifap_preference; /* in/out */ 735 struct sockaddr_storage ifap_addr; /* in/out */ 736 }; 737 738 #include <net/if_arp.h> 739 740 #endif /* _NETBSD_SOURCE */ 741 742 #ifdef _KERNEL 743 #ifdef ALTQ 744 #define IFQ_ENQUEUE(ifq, m, err) \ 745 do { \ 746 IFQ_LOCK((ifq)); \ 747 if (ALTQ_IS_ENABLED((ifq))) \ 748 ALTQ_ENQUEUE((ifq), (m), (err)); \ 749 else { \ 750 if (IF_QFULL((ifq))) { \ 751 m_freem((m)); \ 752 (err) = ENOBUFS; \ 753 } else { \ 754 IF_ENQUEUE((ifq), (m)); \ 755 (err) = 0; \ 756 } \ 757 } \ 758 if ((err)) \ 759 (ifq)->ifq_drops++; \ 760 IFQ_UNLOCK((ifq)); \ 761 } while (/*CONSTCOND*/ 0) 762 763 #define IFQ_DEQUEUE(ifq, m) \ 764 do { \ 765 IFQ_LOCK((ifq)); \ 766 if (TBR_IS_ENABLED((ifq))) \ 767 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 768 else if (ALTQ_IS_ENABLED((ifq))) \ 769 ALTQ_DEQUEUE((ifq), (m)); \ 770 else \ 771 IF_DEQUEUE((ifq), (m)); \ 772 IFQ_UNLOCK((ifq)); \ 773 } while (/*CONSTCOND*/ 0) 774 775 #define IFQ_POLL(ifq, m) \ 776 do { \ 777 IFQ_LOCK((ifq)); \ 778 if (TBR_IS_ENABLED((ifq))) \ 779 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 780 else if (ALTQ_IS_ENABLED((ifq))) \ 781 ALTQ_POLL((ifq), (m)); \ 782 else \ 783 IF_POLL((ifq), (m)); \ 784 IFQ_UNLOCK((ifq)); \ 785 } while (/*CONSTCOND*/ 0) 786 787 #define IFQ_PURGE(ifq) \ 788 do { \ 789 IFQ_LOCK((ifq)); \ 790 if (ALTQ_IS_ENABLED((ifq))) \ 791 ALTQ_PURGE((ifq)); \ 792 else \ 793 IF_PURGE((ifq)); \ 794 IFQ_UNLOCK((ifq)); \ 795 } while (/*CONSTCOND*/ 0) 796 797 #define IFQ_SET_READY(ifq) \ 798 do { \ 799 (ifq)->altq_flags |= ALTQF_READY; \ 800 } while (/*CONSTCOND*/ 0) 801 802 #define IFQ_CLASSIFY(ifq, m, af) \ 803 do { \ 804 IFQ_LOCK((ifq)); \ 805 if (ALTQ_IS_ENABLED((ifq))) { \ 806 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 807 m->m_pkthdr.pattr_class = (*(ifq)->altq_classify) \ 808 ((ifq)->altq_clfier, (m), (af)); \ 809 m->m_pkthdr.pattr_af = (af); \ 810 m->m_pkthdr.pattr_hdr = mtod((m), void *); \ 811 } \ 812 IFQ_UNLOCK((ifq)); \ 813 } while (/*CONSTCOND*/ 0) 814 #else /* ! ALTQ */ 815 #define IFQ_ENQUEUE(ifq, m, err) \ 816 do { \ 817 IFQ_LOCK((ifq)); \ 818 if (IF_QFULL((ifq))) { \ 819 m_freem((m)); \ 820 (err) = ENOBUFS; \ 821 } else { \ 822 IF_ENQUEUE((ifq), (m)); \ 823 (err) = 0; \ 824 } \ 825 if ((err)) \ 826 (ifq)->ifq_drops++; \ 827 IFQ_UNLOCK((ifq)); \ 828 } while (/*CONSTCOND*/ 0) 829 830 #define IFQ_DEQUEUE(ifq, m) \ 831 do { \ 832 IFQ_LOCK((ifq)); \ 833 IF_DEQUEUE((ifq), (m)); \ 834 IFQ_UNLOCK((ifq)); \ 835 } while (/*CONSTCOND*/ 0) 836 837 #define IFQ_POLL(ifq, m) \ 838 do { \ 839 IFQ_LOCK((ifq)); \ 840 IF_POLL((ifq), (m)); \ 841 IFQ_UNLOCK((ifq)); \ 842 } while (/*CONSTCOND*/ 0) 843 844 #define IFQ_PURGE(ifq) \ 845 do { \ 846 IFQ_LOCK((ifq)); \ 847 IF_PURGE((ifq)); \ 848 IFQ_UNLOCK((ifq)); \ 849 } while (/*CONSTCOND*/ 0) 850 851 #define IFQ_SET_READY(ifq) /* nothing */ 852 853 #define IFQ_CLASSIFY(ifq, m, af) /* nothing */ 854 855 #endif /* ALTQ */ 856 857 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 858 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 859 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 860 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 861 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 862 863 #include <sys/mallocvar.h> 864 MALLOC_DECLARE(M_IFADDR); 865 MALLOC_DECLARE(M_IFMADDR); 866 867 int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *); 868 869 struct ifnet *if_alloc(u_char); 870 void if_free(struct ifnet *); 871 void if_initname(struct ifnet *, const char *, int); 872 struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **); 873 void if_activate_sadl(struct ifnet *, struct ifaddr *, 874 const struct sockaddr_dl *); 875 void if_set_sadl(struct ifnet *, const void *, u_char, bool); 876 void if_alloc_sadl(struct ifnet *); 877 void if_initialize(struct ifnet *); 878 void if_register(struct ifnet *); 879 void if_attach(struct ifnet *); /* Deprecated. Use if_initialize and if_register */ 880 void if_attachdomain(void); 881 void if_deactivate(struct ifnet *); 882 void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *)); 883 void if_detach(struct ifnet *); 884 void if_down(struct ifnet *); 885 void if_link_state_change(struct ifnet *, int); 886 void if_up(struct ifnet *); 887 void ifinit(void); 888 void ifinit1(void); 889 int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *); 890 extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *); 891 int ifioctl_common(struct ifnet *, u_long, void *); 892 int ifpromisc(struct ifnet *, int); 893 struct ifnet *ifunit(const char *); 894 struct ifnet *if_get(const char *, struct psref *); 895 ifnet_t *if_byindex(u_int); 896 ifnet_t *if_get_byindex(u_int, struct psref *); 897 void if_put(const struct ifnet *, struct psref *); 898 int if_addr_init(ifnet_t *, struct ifaddr *, bool); 899 int if_do_dad(struct ifnet *); 900 int if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *); 901 int if_flags_set(struct ifnet *, const short); 902 int if_clone_list(int, char *, int *); 903 904 void if_input(struct ifnet *, struct mbuf *); 905 906 struct if_percpuq * 907 if_percpuq_create(struct ifnet *); 908 void if_percpuq_destroy(struct if_percpuq *); 909 void 910 if_percpuq_enqueue(struct if_percpuq *, struct mbuf *); 911 912 void ifa_insert(struct ifnet *, struct ifaddr *); 913 void ifa_remove(struct ifnet *, struct ifaddr *); 914 915 void ifaref(struct ifaddr *); 916 void ifafree(struct ifaddr *); 917 918 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 919 struct ifaddr *ifa_ifwithaf(int); 920 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *); 921 struct ifaddr *ifa_ifwithnet(const struct sockaddr *); 922 struct ifaddr *ifa_ifwithladdr(const struct sockaddr *); 923 struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *, 924 const struct sockaddr *); 925 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 926 void ifafree(struct ifaddr *); 927 void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 928 void p2p_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 929 930 void if_clone_attach(struct if_clone *); 931 void if_clone_detach(struct if_clone *); 932 933 int if_transmit(struct ifnet *, struct mbuf *); 934 935 int ifq_enqueue(struct ifnet *, struct mbuf *); 936 int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf *); 937 938 int loioctl(struct ifnet *, u_long, void *); 939 void loopattach(int); 940 int looutput(struct ifnet *, 941 struct mbuf *, const struct sockaddr *, const struct rtentry *); 942 void lortrequest(int, struct rtentry *, const struct rt_addrinfo *); 943 944 /* 945 * These are exported because they're an easy way to tell if 946 * an interface is going away without having to burn a flag. 947 */ 948 int if_nulloutput(struct ifnet *, struct mbuf *, 949 const struct sockaddr *, const struct rtentry *); 950 void if_nullinput(struct ifnet *, struct mbuf *); 951 void if_nullstart(struct ifnet *); 952 int if_nulltransmit(struct ifnet *, struct mbuf *); 953 int if_nullioctl(struct ifnet *, u_long, void *); 954 int if_nullinit(struct ifnet *); 955 void if_nullstop(struct ifnet *, int); 956 void if_nullslowtimo(struct ifnet *); 957 #define if_nullwatchdog if_nullslowtimo 958 void if_nulldrain(struct ifnet *); 959 #else 960 struct if_nameindex { 961 unsigned int if_index; /* 1, 2, ... */ 962 char *if_name; /* null terminated name: "le0", ... */ 963 }; 964 965 #include <sys/cdefs.h> 966 __BEGIN_DECLS 967 unsigned int if_nametoindex(const char *); 968 char * if_indextoname(unsigned int, char *); 969 struct if_nameindex * if_nameindex(void); 970 void if_freenameindex(struct if_nameindex *); 971 __END_DECLS 972 #endif /* _KERNEL */ /* XXX really ALTQ? */ 973 974 #ifdef _KERNEL 975 976 #define IFADDR_FIRST(__ifp) TAILQ_FIRST(&(__ifp)->if_addrlist) 977 #define IFADDR_NEXT(__ifa) TAILQ_NEXT((__ifa), ifa_list) 978 #define IFADDR_FOREACH(__ifa, __ifp) TAILQ_FOREACH(__ifa, \ 979 &(__ifp)->if_addrlist, ifa_list) 980 #define IFADDR_FOREACH_SAFE(__ifa, __ifp, __nifa) \ 981 TAILQ_FOREACH_SAFE(__ifa, \ 982 &(__ifp)->if_addrlist, ifa_list, __nifa) 983 #define IFADDR_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist) 984 985 #define IFNET_LOCK() mutex_enter(&ifnet_mtx) 986 #define IFNET_UNLOCK() mutex_exit(&ifnet_mtx) 987 #define IFNET_LOCKED() mutex_owned(&ifnet_mtx) 988 989 #define IFNET_READER_EMPTY() \ 990 (PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 991 #define IFNET_READER_FIRST() \ 992 PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) 993 #define IFNET_READER_NEXT(__ifp) \ 994 PSLIST_READER_NEXT((__ifp), struct ifnet, if_pslist_entry) 995 #define IFNET_READER_FOREACH(__ifp) \ 996 PSLIST_READER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 997 if_pslist_entry) 998 #define IFNET_WRITER_INSERT_HEAD(__ifp) \ 999 PSLIST_WRITER_INSERT_HEAD(&ifnet_pslist, (__ifp), if_pslist_entry) 1000 #define IFNET_WRITER_REMOVE(__ifp) \ 1001 PSLIST_WRITER_REMOVE((__ifp), if_pslist_entry) 1002 #define IFNET_WRITER_FOREACH(__ifp) \ 1003 PSLIST_WRITER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1004 if_pslist_entry) 1005 #define IFNET_WRITER_NEXT(__ifp) \ 1006 PSLIST_WRITER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1007 #define IFNET_WRITER_INSERT_AFTER(__ifp, __new) \ 1008 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), if_pslist_entry) 1009 #define IFNET_WRITER_EMPTY() \ 1010 (PSLIST_WRITER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1011 #define IFNET_WRITER_INSERT_TAIL(__new) \ 1012 do { \ 1013 if (IFNET_WRITER_EMPTY()) { \ 1014 IFNET_WRITER_INSERT_HEAD((__new)); \ 1015 } else { \ 1016 struct ifnet *__ifp; \ 1017 IFNET_WRITER_FOREACH(__ifp) { \ 1018 if (IFNET_WRITER_NEXT(__ifp) == NULL) { \ 1019 IFNET_WRITER_INSERT_AFTER(__ifp,\ 1020 (__new)); \ 1021 break; \ 1022 } \ 1023 } \ 1024 } \ 1025 } while (0) 1026 1027 extern struct pslist_head ifnet_pslist; 1028 extern struct psref_class *ifnet_psref_class; 1029 extern kmutex_t ifnet_mtx; 1030 1031 extern struct ifnet *lo0ifp; 1032 1033 /* 1034 * ifq sysctl support 1035 */ 1036 int sysctl_ifq(int *name, u_int namelen, void *oldp, 1037 size_t *oldlenp, void *newp, size_t newlen, 1038 struct ifqueue *ifq); 1039 /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 1040 #define IFQCTL_LEN 1 1041 #define IFQCTL_MAXLEN 2 1042 #define IFQCTL_PEAK 3 1043 #define IFQCTL_DROPS 4 1044 #define IFQCTL_MAXID 5 1045 1046 #endif /* _KERNEL */ 1047 1048 #ifdef _NETBSD_SOURCE 1049 /* 1050 * sysctl for ifq (per-protocol packet input queue variant of ifqueue) 1051 */ 1052 #define CTL_IFQ_NAMES { \ 1053 { 0, 0 }, \ 1054 { "len", CTLTYPE_INT }, \ 1055 { "maxlen", CTLTYPE_INT }, \ 1056 { "peak", CTLTYPE_INT }, \ 1057 { "drops", CTLTYPE_INT }, \ 1058 } 1059 #endif /* _NETBSD_SOURCE */ 1060 #endif /* !_NET_IF_H_ */ 1061