1 /* $NetBSD: if.h,v 1.232 2016/12/13 02:05:48 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 struct if_deferred_start; 234 235 typedef unsigned short if_index_t; 236 237 typedef struct ifnet { 238 void *if_softc; /* lower-level data for this if */ 239 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */ 240 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 241 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 242 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 243 int if_pcount; /* number of promiscuous listeners */ 244 struct bpf_if *if_bpf; /* packet filter structure */ 245 if_index_t if_index; /* numeric abbreviation for this if */ 246 short if_timer; /* time 'til if_slowtimo called */ 247 unsigned short if_flags; /* up/down, broadcast, etc. */ 248 short if_extflags; /* if_output MP-safe, etc. */ 249 struct if_data if_data; /* statistics and other data about if */ 250 /* 251 * Procedure handles. If you add more of these, don't forget the 252 * corresponding NULL stub in if.c. 253 */ 254 int (*if_output) /* output routine (enqueue) */ 255 (struct ifnet *, struct mbuf *, const struct sockaddr *, 256 const struct rtentry *); 257 void (*_if_input) /* input routine (from h/w driver) */ 258 (struct ifnet *, struct mbuf *); 259 void (*if_start) /* initiate output routine */ 260 (struct ifnet *); 261 int (*if_transmit) /* output routine, must be MP-safe */ 262 (struct ifnet *, struct mbuf *); 263 int (*if_ioctl) /* ioctl routine */ 264 (struct ifnet *, u_long, void *); 265 int (*if_init) /* init routine */ 266 (struct ifnet *); 267 void (*if_stop) /* stop routine */ 268 (struct ifnet *, int); 269 void (*if_slowtimo) /* timer routine */ 270 (struct ifnet *); 271 #define if_watchdog if_slowtimo 272 void (*if_drain) /* routine to release resources */ 273 (struct ifnet *); 274 struct ifaltq if_snd; /* output queue (includes altq) */ 275 struct ifaddr *if_dl; /* identity of this interface. */ 276 const struct sockaddr_dl *if_sadl; /* pointer to sockaddr_dl 277 * of if_dl 278 */ 279 /* if_hwdl: h/w identity 280 * 281 * May be NULL. If not NULL, it is the address assigned 282 * to the interface by the manufacturer, so it very likely 283 * to be unique. It MUST NOT be deleted. It is highly 284 * suitable for deriving the EUI64 for the interface. 285 */ 286 struct ifaddr *if_hwdl; 287 const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */ 288 struct bridge_softc *if_bridge; /* bridge glue */ 289 struct bridge_iflist *if_bridgeif; /* shortcut to interface list entry */ 290 int if_dlt; /* data link type (<net/dlt.h>) */ 291 pfil_head_t * if_pfil; /* filtering point */ 292 uint64_t if_capabilities; /* interface capabilities */ 293 uint64_t if_capenable; /* capabilities enabled */ 294 union { 295 void * carp_s; /* carp structure (used by !carp ifs) */ 296 struct ifnet *carp_d;/* ptr to carpdev (used by carp ifs) */ 297 } if_carp_ptr; 298 #define if_carp if_carp_ptr.carp_s 299 #define if_carpdev if_carp_ptr.carp_d 300 /* 301 * These are pre-computed based on an interfaces enabled 302 * capabilities, for speed elsewhere. 303 */ 304 int if_csum_flags_tx; /* M_CSUM_* flags for Tx */ 305 int if_csum_flags_rx; /* M_CSUM_* flags for Rx */ 306 307 void *if_afdata[AF_MAX]; 308 struct mowner *if_mowner; /* who owns mbufs for this interface */ 309 310 void *if_agrprivate; /* used only when #if NAGR > 0 */ 311 312 /* 313 * pf specific data, used only when #if NPF > 0. 314 */ 315 void *if_pf_kif; /* pf interface abstraction */ 316 void *if_pf_groups; /* pf interface groups */ 317 /* 318 * During an ifnet's lifetime, it has only one if_index, but 319 * and if_index is not sufficient to identify an ifnet 320 * because during the lifetime of the system, many ifnets may occupy a 321 * given if_index. Let us tell different ifnets at the same 322 * if_index apart by their if_index_gen, a unique number that each ifnet 323 * is assigned when it if_attach()s. Now, the kernel can use the 324 * pair (if_index, if_index_gen) as a weak reference to an ifnet. 325 */ 326 uint64_t if_index_gen; /* generation number for the ifnet 327 * at if_index: if two ifnets' index 328 * and generation number are both the 329 * same, they are the same ifnet. 330 */ 331 struct sysctllog *if_sysctl_log; 332 int (*if_initaddr)(struct ifnet *, struct ifaddr *, bool); 333 int (*if_mcastop)(struct ifnet *, const unsigned long, 334 const struct sockaddr *); 335 int (*if_setflags)(struct ifnet *, const short); 336 kmutex_t *if_ioctl_lock; 337 #ifdef _KERNEL /* XXX kvm(3) */ 338 struct callout *if_slowtimo_ch; 339 struct krwlock *if_afdata_lock; 340 struct if_percpuq *if_percpuq; /* We should remove it in the future */ 341 void *if_link_si; /* softint to handle link state changes */ 342 uint16_t if_link_queue; /* masked link state change queue */ 343 struct pslist_entry if_pslist_entry; 344 struct psref_target if_psref; 345 struct pslist_head if_addr_pslist; 346 struct if_deferred_start *if_deferred_start; 347 #endif 348 } ifnet_t; 349 350 #define if_mtu if_data.ifi_mtu 351 #define if_type if_data.ifi_type 352 #define if_addrlen if_data.ifi_addrlen 353 #define if_hdrlen if_data.ifi_hdrlen 354 #define if_metric if_data.ifi_metric 355 #define if_link_state if_data.ifi_link_state 356 #define if_baudrate if_data.ifi_baudrate 357 #define if_ipackets if_data.ifi_ipackets 358 #define if_ierrors if_data.ifi_ierrors 359 #define if_opackets if_data.ifi_opackets 360 #define if_oerrors if_data.ifi_oerrors 361 #define if_collisions if_data.ifi_collisions 362 #define if_ibytes if_data.ifi_ibytes 363 #define if_obytes if_data.ifi_obytes 364 #define if_imcasts if_data.ifi_imcasts 365 #define if_omcasts if_data.ifi_omcasts 366 #define if_iqdrops if_data.ifi_iqdrops 367 #define if_noproto if_data.ifi_noproto 368 #define if_lastchange if_data.ifi_lastchange 369 370 #define IFF_UP 0x0001 /* interface is up */ 371 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 372 #define IFF_DEBUG 0x0004 /* turn on debugging */ 373 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 374 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 375 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */ 376 #define IFF_RUNNING 0x0040 /* resources allocated */ 377 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 378 #define IFF_PROMISC 0x0100 /* receive all packets */ 379 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 380 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 381 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 382 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 383 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 384 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 385 #define IFF_MULTICAST 0x8000 /* supports multicast */ 386 387 #define IFEF_OUTPUT_MPSAFE __BIT(0) /* if_output() can run parallel */ 388 #define IFEF_START_MPSAFE __BIT(1) /* if_start() can run parallel */ 389 #define IFEF_NO_LINK_STATE_CHANGE __BIT(2) /* doesn't use link state interrupts */ 390 391 #ifdef _KERNEL 392 static inline bool 393 if_output_is_mpsafe(struct ifnet *ifp) 394 { 395 396 return ((ifp->if_extflags & IFEF_OUTPUT_MPSAFE) != 0); 397 } 398 399 static inline int 400 if_output_lock(struct ifnet *cifp, struct ifnet *ifp, struct mbuf *m, 401 const struct sockaddr *dst, const struct rtentry *rt) 402 { 403 404 if (if_output_is_mpsafe(cifp)) { 405 return (*cifp->if_output)(ifp, m, dst, rt); 406 } else { 407 int ret; 408 409 KERNEL_LOCK(1, NULL); 410 ret = (*cifp->if_output)(ifp, m, dst, rt); 411 KERNEL_UNLOCK_ONE(NULL); 412 return ret; 413 } 414 } 415 416 static inline bool 417 if_start_is_mpsafe(struct ifnet *ifp) 418 { 419 420 return ((ifp->if_extflags & IFEF_START_MPSAFE) != 0); 421 } 422 423 static inline void 424 if_start_lock(struct ifnet *ifp) 425 { 426 427 if (if_start_is_mpsafe(ifp)) { 428 (*ifp->if_start)(ifp); 429 } else { 430 KERNEL_LOCK(1, NULL); 431 (*ifp->if_start)(ifp); 432 KERNEL_UNLOCK_ONE(NULL); 433 } 434 } 435 436 static inline bool 437 if_is_link_state_changeable(struct ifnet *ifp) 438 { 439 440 return ((ifp->if_extflags & IFEF_NO_LINK_STATE_CHANGE) == 0); 441 } 442 #endif /* _KERNEL */ 443 444 #define IFFBITS \ 445 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS" \ 446 "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \ 447 "\15LINK0\16LINK1\17LINK2\20MULTICAST" 448 449 /* flags set internally only: */ 450 #define IFF_CANTCHANGE \ 451 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 452 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 453 454 /* 455 * Some convenience macros used for setting ifi_baudrate. 456 */ 457 #define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */ 458 #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ 459 #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */ 460 461 /* Capabilities that interfaces can advertise. */ 462 /* 0x01 .. 0x40 were previously used */ 463 #define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */ 464 #define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */ 465 #define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */ 466 #define IFCAP_CSUM_TCPv4_Rx 0x00400 /* can do IPv4/TCP checksums (Rx) */ 467 #define IFCAP_CSUM_TCPv4_Tx 0x00800 /* can do IPv4/TCP checksums (Tx) */ 468 #define IFCAP_CSUM_UDPv4_Rx 0x01000 /* can do IPv4/UDP checksums (Rx) */ 469 #define IFCAP_CSUM_UDPv4_Tx 0x02000 /* can do IPv4/UDP checksums (Tx) */ 470 #define IFCAP_CSUM_TCPv6_Rx 0x04000 /* can do IPv6/TCP checksums (Rx) */ 471 #define IFCAP_CSUM_TCPv6_Tx 0x08000 /* can do IPv6/TCP checksums (Tx) */ 472 #define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */ 473 #define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */ 474 #define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */ 475 #define IFCAP_LRO 0x80000 /* can do Large Receive Offload */ 476 #define IFCAP_MASK 0xfff80 /* currently valid capabilities */ 477 478 #define IFCAPBITS \ 479 "\020" \ 480 "\10TSO4" \ 481 "\11IP4CSUM_Rx" \ 482 "\12IP4CSUM_Tx" \ 483 "\13TCP4CSUM_Rx" \ 484 "\14TCP4CSUM_Tx" \ 485 "\15UDP4CSUM_Rx" \ 486 "\16UDP4CSUM_Tx" \ 487 "\17TCP6CSUM_Rx" \ 488 "\20TCP6CSUM_Tx" \ 489 "\21UDP6CSUM_Rx" \ 490 "\22UDP6CSUM_Tx" \ 491 "\23TSO6" \ 492 "\24LRO" \ 493 494 #define IF_AFDATA_LOCK_INIT(ifp) \ 495 do {(ifp)->if_afdata_lock = rw_obj_alloc();} while (0) 496 497 #define IF_AFDATA_LOCK_DESTROY(ifp) rw_obj_free((ifp)->if_afdata_lock) 498 499 #define IF_AFDATA_WLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_WRITER) 500 #define IF_AFDATA_RLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_READER) 501 #define IF_AFDATA_WUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 502 #define IF_AFDATA_RUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 503 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 504 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 505 #define IF_AFDATA_TRYLOCK(ifp) rw_tryenter((ifp)->if_afdata_lock, RW_WRITER) 506 507 #define IF_AFDATA_LOCK_ASSERT(ifp) \ 508 KASSERT(rw_lock_held((ifp)->if_afdata_lock)) 509 #define IF_AFDATA_RLOCK_ASSERT(ifp) \ 510 KASSERT(rw_read_held((ifp)->if_afdata_lock)) 511 #define IF_AFDATA_WLOCK_ASSERT(ifp) \ 512 KASSERT(rw_write_held((ifp)->if_afdata_lock)) 513 #define IF_AFDATA_UNLOCK_ASSERT(ifp) \ 514 KASSERT(!rw_lock_held((ifp)->if_afdata_lock)) 515 516 /* 517 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 518 * input routines have queues of messages stored on ifqueue structures 519 * (defined above). Entries are added to and deleted from these structures 520 * by these macros, which should be called with ipl raised to splnet(). 521 */ 522 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 523 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 524 #define IF_ENQUEUE(ifq, m) do { \ 525 (m)->m_nextpkt = 0; \ 526 if ((ifq)->ifq_tail == 0) \ 527 (ifq)->ifq_head = m; \ 528 else \ 529 (ifq)->ifq_tail->m_nextpkt = m; \ 530 (ifq)->ifq_tail = m; \ 531 (ifq)->ifq_len++; \ 532 } while (/*CONSTCOND*/0) 533 #define IF_PREPEND(ifq, m) do { \ 534 (m)->m_nextpkt = (ifq)->ifq_head; \ 535 if ((ifq)->ifq_tail == 0) \ 536 (ifq)->ifq_tail = (m); \ 537 (ifq)->ifq_head = (m); \ 538 (ifq)->ifq_len++; \ 539 } while (/*CONSTCOND*/0) 540 #define IF_DEQUEUE(ifq, m) do { \ 541 (m) = (ifq)->ifq_head; \ 542 if (m) { \ 543 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 544 (ifq)->ifq_tail = 0; \ 545 (m)->m_nextpkt = 0; \ 546 (ifq)->ifq_len--; \ 547 } \ 548 } while (/*CONSTCOND*/0) 549 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 550 #define IF_PURGE(ifq) \ 551 do { \ 552 struct mbuf *__m0; \ 553 \ 554 for (;;) { \ 555 IF_DEQUEUE((ifq), __m0); \ 556 if (__m0 == NULL) \ 557 break; \ 558 else \ 559 m_freem(__m0); \ 560 } \ 561 } while (/*CONSTCOND*/ 0) 562 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 563 564 #ifndef IFQ_MAXLEN 565 #define IFQ_MAXLEN 256 566 #endif 567 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 568 569 /* 570 * Structure defining statistics and other data kept regarding an address 571 * on a network interface. 572 */ 573 struct ifaddr_data { 574 int64_t ifad_inbytes; 575 int64_t ifad_outbytes; 576 }; 577 578 /* 579 * The ifaddr structure contains information about one address 580 * of an interface. They are maintained by the different address families, 581 * are allocated and attached when an address is set, and are linked 582 * together so all addresses for an interface can be located. 583 */ 584 struct ifaddr { 585 struct sockaddr *ifa_addr; /* address of interface */ 586 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 587 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 588 struct sockaddr *ifa_netmask; /* used to determine subnet */ 589 struct ifnet *ifa_ifp; /* back-pointer to interface */ 590 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 591 struct ifaddr_data ifa_data; /* statistics on the address */ 592 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 593 (int, struct rtentry *, const struct rt_addrinfo *); 594 u_int ifa_flags; /* mostly rt_flags for cloning */ 595 int ifa_refcnt; /* count of references */ 596 int ifa_metric; /* cost of going out this interface */ 597 struct ifaddr *(*ifa_getifa)(struct ifaddr *, 598 const struct sockaddr *); 599 uint32_t *ifa_seqno; 600 int16_t ifa_preference; /* preference level for this address */ 601 #ifdef _KERNEL 602 struct pslist_entry ifa_pslist_entry; 603 struct psref_target ifa_psref; 604 #endif 605 }; 606 #define IFA_ROUTE RTF_UP /* (0x01) route installed */ 607 #define IFA_DESTROYING 0x2 608 609 /* 610 * Message format for use in obtaining information about interfaces from 611 * sysctl and the routing socket. We need to force 64-bit alignment if we 612 * aren't using compatiblity definitons. 613 */ 614 #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK) 615 #define __align64 __aligned(sizeof(uint64_t)) 616 #else 617 #define __align64 618 #endif 619 struct if_msghdr { 620 u_short ifm_msglen __align64; 621 /* to skip over non-understood messages */ 622 u_char ifm_version; /* future binary compatibility */ 623 u_char ifm_type; /* message type */ 624 int ifm_addrs; /* like rtm_addrs */ 625 int ifm_flags; /* value of if_flags */ 626 u_short ifm_index; /* index for associated ifp */ 627 struct if_data ifm_data __align64; 628 /* statistics and other data about if */ 629 }; 630 631 /* 632 * Message format for use in obtaining information about interface addresses 633 * from sysctl and the routing socket. 634 */ 635 struct ifa_msghdr { 636 u_short ifam_msglen __align64; 637 /* to skip over non-understood messages */ 638 u_char ifam_version; /* future binary compatibility */ 639 u_char ifam_type; /* message type */ 640 u_short ifam_index; /* index for associated ifp */ 641 int ifam_flags; /* value of ifa_flags */ 642 int ifam_addrs; /* like rtm_addrs */ 643 pid_t ifam_pid; /* identify sender */ 644 int ifam_addrflags; /* family specific address flags */ 645 int ifam_metric; /* value of ifa_metric */ 646 }; 647 648 /* 649 * Message format announcing the arrival or departure of a network interface. 650 */ 651 struct if_announcemsghdr { 652 u_short ifan_msglen __align64; 653 /* to skip over non-understood messages */ 654 u_char ifan_version; /* future binary compatibility */ 655 u_char ifan_type; /* message type */ 656 u_short ifan_index; /* index for associated ifp */ 657 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 658 u_short ifan_what; /* what type of announcement */ 659 }; 660 661 #define IFAN_ARRIVAL 0 /* interface arrival */ 662 #define IFAN_DEPARTURE 1 /* interface departure */ 663 664 #undef __align64 665 666 /* 667 * Interface request structure used for socket 668 * ioctl's. All interface ioctl's must have parameter 669 * definitions which begin with ifr_name. The 670 * remainder may be interface specific. 671 */ 672 struct ifreq { 673 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 674 union { 675 struct sockaddr ifru_addr; 676 struct sockaddr ifru_dstaddr; 677 struct sockaddr ifru_broadaddr; 678 struct sockaddr_storage ifru_space; 679 short ifru_flags; 680 int ifru_addrflags; 681 int ifru_metric; 682 int ifru_mtu; 683 int ifru_dlt; 684 u_int ifru_value; 685 void * ifru_data; 686 struct { 687 uint32_t b_buflen; 688 void *b_buf; 689 } ifru_b; 690 } ifr_ifru; 691 #define ifr_addr ifr_ifru.ifru_addr /* address */ 692 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 693 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 694 #define ifr_space ifr_ifru.ifru_space /* sockaddr_storage */ 695 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 696 #define ifr_addrflags ifr_ifru.ifru_addrflags /* addr flags */ 697 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 698 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 699 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 700 #define ifr_value ifr_ifru.ifru_value /* generic value */ 701 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 702 #define ifr_data ifr_ifru.ifru_data /* for use by interface 703 * XXX deprecated 704 */ 705 #define ifr_buf ifr_ifru.ifru_b.b_buf /* new interface ioctls */ 706 #define ifr_buflen ifr_ifru.ifru_b.b_buflen 707 #define ifr_index ifr_ifru.ifru_value /* interface index, BSD */ 708 #define ifr_ifindex ifr_index /* interface index, linux */ 709 }; 710 711 #ifdef _KERNEL 712 #define ifreq_setdstaddr ifreq_setaddr 713 #define ifreq_setbroadaddr ifreq_setaddr 714 #define ifreq_getdstaddr ifreq_getaddr 715 #define ifreq_getbroadaddr ifreq_getaddr 716 717 static inline const struct sockaddr * 718 /*ARGSUSED*/ 719 ifreq_getaddr(u_long cmd, const struct ifreq *ifr) 720 { 721 return &ifr->ifr_addr; 722 } 723 #endif /* _KERNEL */ 724 725 struct ifcapreq { 726 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 727 uint64_t ifcr_capabilities; /* supported capabiliites */ 728 uint64_t ifcr_capenable; /* capabilities enabled */ 729 }; 730 731 struct ifaliasreq { 732 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 733 struct sockaddr ifra_addr; 734 struct sockaddr ifra_dstaddr; 735 #define ifra_broadaddr ifra_dstaddr 736 struct sockaddr ifra_mask; 737 }; 738 739 struct ifdatareq { 740 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 741 struct if_data ifdr_data; 742 }; 743 744 struct ifmediareq { 745 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 746 int ifm_current; /* current media options */ 747 int ifm_mask; /* don't care mask */ 748 int ifm_status; /* media status */ 749 int ifm_active; /* active options */ 750 int ifm_count; /* # entries in ifm_ulist 751 array */ 752 int *ifm_ulist; /* media words */ 753 }; 754 755 756 struct ifdrv { 757 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 758 unsigned long ifd_cmd; 759 size_t ifd_len; 760 void *ifd_data; 761 }; 762 #define IFLINKSTR_QUERYLEN 0x01 763 #define IFLINKSTR_UNSET 0x02 764 765 /* 766 * Structure used in SIOCGIFCONF request. 767 * Used to retrieve interface configuration 768 * for machine (useful for programs which 769 * must know all networks accessible). 770 */ 771 struct ifconf { 772 int ifc_len; /* size of associated buffer */ 773 union { 774 void * ifcu_buf; 775 struct ifreq *ifcu_req; 776 } ifc_ifcu; 777 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 778 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 779 }; 780 781 /* 782 * Structure for SIOC[AGD]LIFADDR 783 */ 784 struct if_laddrreq { 785 char iflr_name[IFNAMSIZ]; 786 unsigned int flags; 787 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 788 #define IFLR_ACTIVE 0x4000 /* in/out: link-layer address activation */ 789 #define IFLR_FACTORY 0x2000 /* in/out: factory link-layer address */ 790 unsigned int prefixlen; /* in/out */ 791 struct sockaddr_storage addr; /* in/out */ 792 struct sockaddr_storage dstaddr; /* out */ 793 }; 794 795 /* 796 * Structure for SIOC[SG]IFADDRPREF 797 */ 798 struct if_addrprefreq { 799 char ifap_name[IFNAMSIZ]; 800 int16_t ifap_preference; /* in/out */ 801 struct sockaddr_storage ifap_addr; /* in/out */ 802 }; 803 804 #include <net/if_arp.h> 805 806 #endif /* _NETBSD_SOURCE */ 807 808 #ifdef _KERNEL 809 #ifdef ALTQ 810 #define IFQ_ENQUEUE(ifq, m, err) \ 811 do { \ 812 mutex_enter((ifq)->ifq_lock); \ 813 if (ALTQ_IS_ENABLED((ifq))) \ 814 ALTQ_ENQUEUE((ifq), (m), (err)); \ 815 else { \ 816 if (IF_QFULL((ifq))) { \ 817 m_freem((m)); \ 818 (err) = ENOBUFS; \ 819 } else { \ 820 IF_ENQUEUE((ifq), (m)); \ 821 (err) = 0; \ 822 } \ 823 } \ 824 if ((err)) \ 825 (ifq)->ifq_drops++; \ 826 mutex_exit((ifq)->ifq_lock); \ 827 } while (/*CONSTCOND*/ 0) 828 829 #define IFQ_DEQUEUE(ifq, m) \ 830 do { \ 831 mutex_enter((ifq)->ifq_lock); \ 832 if (TBR_IS_ENABLED((ifq))) \ 833 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 834 else if (ALTQ_IS_ENABLED((ifq))) \ 835 ALTQ_DEQUEUE((ifq), (m)); \ 836 else \ 837 IF_DEQUEUE((ifq), (m)); \ 838 mutex_exit((ifq)->ifq_lock); \ 839 } while (/*CONSTCOND*/ 0) 840 841 #define IFQ_POLL(ifq, m) \ 842 do { \ 843 mutex_enter((ifq)->ifq_lock); \ 844 if (TBR_IS_ENABLED((ifq))) \ 845 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 846 else if (ALTQ_IS_ENABLED((ifq))) \ 847 ALTQ_POLL((ifq), (m)); \ 848 else \ 849 IF_POLL((ifq), (m)); \ 850 mutex_exit((ifq)->ifq_lock); \ 851 } while (/*CONSTCOND*/ 0) 852 853 #define IFQ_PURGE(ifq) \ 854 do { \ 855 mutex_enter((ifq)->ifq_lock); \ 856 if (ALTQ_IS_ENABLED((ifq))) \ 857 ALTQ_PURGE((ifq)); \ 858 else \ 859 IF_PURGE((ifq)); \ 860 mutex_exit((ifq)->ifq_lock); \ 861 } while (/*CONSTCOND*/ 0) 862 863 #define IFQ_SET_READY(ifq) \ 864 do { \ 865 (ifq)->altq_flags |= ALTQF_READY; \ 866 } while (/*CONSTCOND*/ 0) 867 868 #define IFQ_CLASSIFY(ifq, m, af) \ 869 do { \ 870 mutex_enter((ifq)->ifq_lock); \ 871 if (ALTQ_IS_ENABLED((ifq))) { \ 872 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 873 m->m_pkthdr.pattr_class = (*(ifq)->altq_classify) \ 874 ((ifq)->altq_clfier, (m), (af)); \ 875 m->m_pkthdr.pattr_af = (af); \ 876 m->m_pkthdr.pattr_hdr = mtod((m), void *); \ 877 } \ 878 mutex_exit((ifq)->ifq_lock); \ 879 } while (/*CONSTCOND*/ 0) 880 #else /* ! ALTQ */ 881 #define IFQ_ENQUEUE(ifq, m, err) \ 882 do { \ 883 mutex_enter((ifq)->ifq_lock); \ 884 if (IF_QFULL((ifq))) { \ 885 m_freem((m)); \ 886 (err) = ENOBUFS; \ 887 } else { \ 888 IF_ENQUEUE((ifq), (m)); \ 889 (err) = 0; \ 890 } \ 891 if ((err)) \ 892 (ifq)->ifq_drops++; \ 893 mutex_exit((ifq)->ifq_lock); \ 894 } while (/*CONSTCOND*/ 0) 895 896 #define IFQ_DEQUEUE(ifq, m) \ 897 do { \ 898 mutex_enter((ifq)->ifq_lock); \ 899 IF_DEQUEUE((ifq), (m)); \ 900 mutex_exit((ifq)->ifq_lock); \ 901 } while (/*CONSTCOND*/ 0) 902 903 #define IFQ_POLL(ifq, m) \ 904 do { \ 905 mutex_enter((ifq)->ifq_lock); \ 906 IF_POLL((ifq), (m)); \ 907 mutex_exit((ifq)->ifq_lock); \ 908 } while (/*CONSTCOND*/ 0) 909 910 #define IFQ_PURGE(ifq) \ 911 do { \ 912 mutex_enter((ifq)->ifq_lock); \ 913 IF_PURGE((ifq)); \ 914 mutex_exit((ifq)->ifq_lock); \ 915 } while (/*CONSTCOND*/ 0) 916 917 #define IFQ_SET_READY(ifq) /* nothing */ 918 919 #define IFQ_CLASSIFY(ifq, m, af) /* nothing */ 920 921 #endif /* ALTQ */ 922 923 #define IFQ_LOCK_INIT(ifq) (ifq)->ifq_lock = \ 924 mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET) 925 #define IFQ_LOCK(ifq) mutex_enter((ifq)->ifq_lock) 926 #define IFQ_UNLOCK(ifq) mutex_exit((ifq)->ifq_lock) 927 928 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 929 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 930 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 931 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 932 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 933 934 #include <sys/mallocvar.h> 935 MALLOC_DECLARE(M_IFADDR); 936 MALLOC_DECLARE(M_IFMADDR); 937 938 int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *); 939 940 struct ifnet *if_alloc(u_char); 941 void if_free(struct ifnet *); 942 void if_initname(struct ifnet *, const char *, int); 943 struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **); 944 void if_activate_sadl(struct ifnet *, struct ifaddr *, 945 const struct sockaddr_dl *); 946 void if_set_sadl(struct ifnet *, const void *, u_char, bool); 947 void if_alloc_sadl(struct ifnet *); 948 void if_initialize(struct ifnet *); 949 void if_register(struct ifnet *); 950 void if_attach(struct ifnet *); /* Deprecated. Use if_initialize and if_register */ 951 void if_attachdomain(void); 952 void if_deactivate(struct ifnet *); 953 bool if_is_deactivated(const struct ifnet *); 954 void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *)); 955 void if_detach(struct ifnet *); 956 void if_down(struct ifnet *); 957 void if_link_state_change(struct ifnet *, int); 958 void if_up(struct ifnet *); 959 void ifinit(void); 960 void ifinit1(void); 961 int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *); 962 extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *); 963 int ifioctl_common(struct ifnet *, u_long, void *); 964 int ifpromisc(struct ifnet *, int); 965 int if_addr_init(ifnet_t *, struct ifaddr *, bool); 966 int if_do_dad(struct ifnet *); 967 int if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *); 968 int if_flags_set(struct ifnet *, const short); 969 int if_clone_list(int, char *, int *); 970 971 struct ifnet *ifunit(const char *); 972 struct ifnet *if_get(const char *, struct psref *); 973 ifnet_t *if_byindex(u_int); 974 ifnet_t *if_get_byindex(u_int, struct psref *); 975 void if_put(const struct ifnet *, struct psref *); 976 void if_acquire_NOMPSAFE(struct ifnet *, struct psref *); 977 978 static inline if_index_t 979 if_get_index(const struct ifnet *ifp) 980 { 981 982 return ifp != NULL ? ifp->if_index : 0; 983 } 984 985 bool if_held(struct ifnet *); 986 987 void if_input(struct ifnet *, struct mbuf *); 988 989 struct if_percpuq * 990 if_percpuq_create(struct ifnet *); 991 void if_percpuq_destroy(struct if_percpuq *); 992 void 993 if_percpuq_enqueue(struct if_percpuq *, struct mbuf *); 994 995 void if_deferred_start_init(struct ifnet *, void (*)(struct ifnet *)); 996 void if_schedule_deferred_start(struct ifnet *); 997 998 void ifa_insert(struct ifnet *, struct ifaddr *); 999 void ifa_remove(struct ifnet *, struct ifaddr *); 1000 1001 void ifa_psref_init(struct ifaddr *); 1002 void ifa_acquire(struct ifaddr *, struct psref *); 1003 void ifa_release(struct ifaddr *, struct psref *); 1004 bool ifa_held(struct ifaddr *); 1005 bool ifa_is_destroying(struct ifaddr *); 1006 1007 void ifaref(struct ifaddr *); 1008 void ifafree(struct ifaddr *); 1009 1010 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 1011 struct ifaddr *ifa_ifwithaddr_psref(const struct sockaddr *, struct psref *); 1012 struct ifaddr *ifa_ifwithaf(int); 1013 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *); 1014 struct ifaddr *ifa_ifwithdstaddr_psref(const struct sockaddr *, 1015 struct psref *); 1016 struct ifaddr *ifa_ifwithnet(const struct sockaddr *); 1017 struct ifaddr *ifa_ifwithnet_psref(const struct sockaddr *, struct psref *); 1018 struct ifaddr *ifa_ifwithladdr(const struct sockaddr *); 1019 struct ifaddr *ifa_ifwithladdr_psref(const struct sockaddr *, struct psref *); 1020 struct ifaddr *ifa_ifwithroute_psref(int, const struct sockaddr *, 1021 const struct sockaddr *, struct psref *); 1022 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 1023 struct ifaddr *ifaof_ifpforaddr_psref(const struct sockaddr *, struct ifnet *, 1024 struct psref *); 1025 void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 1026 void p2p_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 1027 1028 void if_clone_attach(struct if_clone *); 1029 void if_clone_detach(struct if_clone *); 1030 1031 int if_transmit_lock(struct ifnet *, struct mbuf *); 1032 1033 int ifq_enqueue(struct ifnet *, struct mbuf *); 1034 int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf *); 1035 1036 int loioctl(struct ifnet *, u_long, void *); 1037 void loopattach(int); 1038 void loopinit(void); 1039 int looutput(struct ifnet *, 1040 struct mbuf *, const struct sockaddr *, const struct rtentry *); 1041 1042 /* 1043 * These are exported because they're an easy way to tell if 1044 * an interface is going away without having to burn a flag. 1045 */ 1046 int if_nulloutput(struct ifnet *, struct mbuf *, 1047 const struct sockaddr *, const struct rtentry *); 1048 void if_nullinput(struct ifnet *, struct mbuf *); 1049 void if_nullstart(struct ifnet *); 1050 int if_nulltransmit(struct ifnet *, struct mbuf *); 1051 int if_nullioctl(struct ifnet *, u_long, void *); 1052 int if_nullinit(struct ifnet *); 1053 void if_nullstop(struct ifnet *, int); 1054 void if_nullslowtimo(struct ifnet *); 1055 #define if_nullwatchdog if_nullslowtimo 1056 void if_nulldrain(struct ifnet *); 1057 #else 1058 struct if_nameindex { 1059 unsigned int if_index; /* 1, 2, ... */ 1060 char *if_name; /* null terminated name: "le0", ... */ 1061 }; 1062 1063 #include <sys/cdefs.h> 1064 __BEGIN_DECLS 1065 unsigned int if_nametoindex(const char *); 1066 char * if_indextoname(unsigned int, char *); 1067 struct if_nameindex * if_nameindex(void); 1068 void if_freenameindex(struct if_nameindex *); 1069 __END_DECLS 1070 #endif /* _KERNEL */ /* XXX really ALTQ? */ 1071 1072 #ifdef _KERNEL 1073 1074 #define IFADDR_FIRST(__ifp) TAILQ_FIRST(&(__ifp)->if_addrlist) 1075 #define IFADDR_NEXT(__ifa) TAILQ_NEXT((__ifa), ifa_list) 1076 #define IFADDR_FOREACH(__ifa, __ifp) TAILQ_FOREACH(__ifa, \ 1077 &(__ifp)->if_addrlist, ifa_list) 1078 #define IFADDR_FOREACH_SAFE(__ifa, __ifp, __nifa) \ 1079 TAILQ_FOREACH_SAFE(__ifa, \ 1080 &(__ifp)->if_addrlist, ifa_list, __nifa) 1081 #define IFADDR_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist) 1082 1083 #define IFADDR_ENTRY_INIT(__ifa) \ 1084 PSLIST_ENTRY_INIT((__ifa), ifa_pslist_entry) 1085 #define IFADDR_ENTRY_DESTROY(__ifa) \ 1086 PSLIST_ENTRY_DESTROY((__ifa), ifa_pslist_entry) 1087 #define IFADDR_READER_EMPTY(__ifp) \ 1088 (PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1089 ifa_pslist_entry) == NULL) 1090 #define IFADDR_READER_FIRST(__ifp) \ 1091 PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1092 ifa_pslist_entry) 1093 #define IFADDR_READER_NEXT(__ifa) \ 1094 PSLIST_READER_NEXT((__ifa), struct ifaddr, ifa_pslist_entry) 1095 #define IFADDR_READER_FOREACH(__ifa, __ifp) \ 1096 PSLIST_READER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ 1097 ifa_pslist_entry) 1098 #define IFADDR_WRITER_INSERT_HEAD(__ifp, __ifa) \ 1099 PSLIST_WRITER_INSERT_HEAD(&(__ifp)->if_addr_pslist, (__ifa), \ 1100 ifa_pslist_entry) 1101 #define IFADDR_WRITER_REMOVE(__ifa) \ 1102 PSLIST_WRITER_REMOVE((__ifa), ifa_pslist_entry) 1103 #define IFADDR_WRITER_FOREACH(__ifa, __ifp) \ 1104 PSLIST_WRITER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ 1105 ifa_pslist_entry) 1106 #define IFADDR_WRITER_NEXT(__ifp) \ 1107 PSLIST_WRITER_NEXT((__ifp), struct ifaddr, ifa_pslist_entry) 1108 #define IFADDR_WRITER_INSERT_AFTER(__ifp, __new) \ 1109 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), ifa_pslist_entry) 1110 #define IFADDR_WRITER_EMPTY(__ifp) \ 1111 (PSLIST_WRITER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1112 ifa_pslist_entry) == NULL) 1113 #define IFADDR_WRITER_INSERT_TAIL(__ifp, __new) \ 1114 do { \ 1115 if (IFADDR_WRITER_EMPTY((__ifp))) { \ 1116 IFADDR_WRITER_INSERT_HEAD((__ifp), (__new)); \ 1117 } else { \ 1118 struct ifaddr *__ifa; \ 1119 IFADDR_WRITER_FOREACH(__ifa, (__ifp)) { \ 1120 if (IFADDR_WRITER_NEXT(__ifa) == NULL) {\ 1121 IFADDR_WRITER_INSERT_AFTER(__ifa,\ 1122 (__new)); \ 1123 break; \ 1124 } \ 1125 } \ 1126 } \ 1127 } while (0) 1128 1129 #define IFNET_LOCK() mutex_enter(&ifnet_mtx) 1130 #define IFNET_UNLOCK() mutex_exit(&ifnet_mtx) 1131 #define IFNET_LOCKED() mutex_owned(&ifnet_mtx) 1132 1133 #define IFNET_READER_EMPTY() \ 1134 (PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1135 #define IFNET_READER_FIRST() \ 1136 PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) 1137 #define IFNET_READER_NEXT(__ifp) \ 1138 PSLIST_READER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1139 #define IFNET_READER_FOREACH(__ifp) \ 1140 PSLIST_READER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1141 if_pslist_entry) 1142 #define IFNET_WRITER_INSERT_HEAD(__ifp) \ 1143 PSLIST_WRITER_INSERT_HEAD(&ifnet_pslist, (__ifp), if_pslist_entry) 1144 #define IFNET_WRITER_REMOVE(__ifp) \ 1145 PSLIST_WRITER_REMOVE((__ifp), if_pslist_entry) 1146 #define IFNET_WRITER_FOREACH(__ifp) \ 1147 PSLIST_WRITER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1148 if_pslist_entry) 1149 #define IFNET_WRITER_NEXT(__ifp) \ 1150 PSLIST_WRITER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1151 #define IFNET_WRITER_INSERT_AFTER(__ifp, __new) \ 1152 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), if_pslist_entry) 1153 #define IFNET_WRITER_EMPTY() \ 1154 (PSLIST_WRITER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1155 #define IFNET_WRITER_INSERT_TAIL(__new) \ 1156 do { \ 1157 if (IFNET_WRITER_EMPTY()) { \ 1158 IFNET_WRITER_INSERT_HEAD((__new)); \ 1159 } else { \ 1160 struct ifnet *__ifp; \ 1161 IFNET_WRITER_FOREACH(__ifp) { \ 1162 if (IFNET_WRITER_NEXT(__ifp) == NULL) { \ 1163 IFNET_WRITER_INSERT_AFTER(__ifp,\ 1164 (__new)); \ 1165 break; \ 1166 } \ 1167 } \ 1168 } \ 1169 } while (0) 1170 1171 extern struct pslist_head ifnet_pslist; 1172 extern struct psref_class *ifnet_psref_class; 1173 extern kmutex_t ifnet_mtx; 1174 1175 extern struct ifnet *lo0ifp; 1176 1177 /* 1178 * ifq sysctl support 1179 */ 1180 int sysctl_ifq(int *name, u_int namelen, void *oldp, 1181 size_t *oldlenp, void *newp, size_t newlen, 1182 struct ifqueue *ifq); 1183 /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 1184 #define IFQCTL_LEN 1 1185 #define IFQCTL_MAXLEN 2 1186 #define IFQCTL_PEAK 3 1187 #define IFQCTL_DROPS 4 1188 #define IFQCTL_MAXID 5 1189 1190 #endif /* _KERNEL */ 1191 1192 #ifdef _NETBSD_SOURCE 1193 /* 1194 * sysctl for ifq (per-protocol packet input queue variant of ifqueue) 1195 */ 1196 #define CTL_IFQ_NAMES { \ 1197 { 0, 0 }, \ 1198 { "len", CTLTYPE_INT }, \ 1199 { "maxlen", CTLTYPE_INT }, \ 1200 { "peak", CTLTYPE_INT }, \ 1201 { "drops", CTLTYPE_INT }, \ 1202 } 1203 #endif /* _NETBSD_SOURCE */ 1204 #endif /* !_NET_IF_H_ */ 1205