if.h revision 1.244
1 /* $NetBSD: if.h,v 1.244 2017/11/22 03:03:18 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 struct in6_multi; 235 236 typedef unsigned short if_index_t; 237 238 typedef struct ifnet { 239 void *if_softc; /* lower-level data for this if */ 240 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */ 241 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 242 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 243 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 244 int if_pcount; /* number of promiscuous listeners */ 245 struct bpf_if *if_bpf; /* packet filter structure */ 246 if_index_t if_index; /* numeric abbreviation for this if */ 247 short if_timer; /* time 'til if_slowtimo called */ 248 unsigned short if_flags; /* up/down, broadcast, etc. */ 249 short if_extflags; /* if_output MP-safe, etc. */ 250 struct if_data if_data; /* statistics and other data about if */ 251 /* 252 * Procedure handles. If you add more of these, don't forget the 253 * corresponding NULL stub in if.c. 254 */ 255 int (*if_output) /* output routine (enqueue) */ 256 (struct ifnet *, struct mbuf *, const struct sockaddr *, 257 const struct rtentry *); 258 void (*_if_input) /* input routine (from h/w driver) */ 259 (struct ifnet *, struct mbuf *); 260 void (*if_start) /* initiate output routine */ 261 (struct ifnet *); 262 int (*if_transmit) /* output routine, must be MP-safe */ 263 (struct ifnet *, struct mbuf *); 264 int (*if_ioctl) /* ioctl routine */ 265 (struct ifnet *, u_long, void *); 266 int (*if_init) /* init routine */ 267 (struct ifnet *); 268 void (*if_stop) /* stop routine */ 269 (struct ifnet *, int); 270 void (*if_slowtimo) /* timer routine */ 271 (struct ifnet *); 272 #define if_watchdog if_slowtimo 273 void (*if_drain) /* routine to release resources */ 274 (struct ifnet *); 275 struct ifaltq if_snd; /* output queue (includes altq) */ 276 struct ifaddr *if_dl; /* identity of this interface. */ 277 const struct sockaddr_dl *if_sadl; /* pointer to sockaddr_dl 278 * of if_dl 279 */ 280 /* if_hwdl: h/w identity 281 * 282 * May be NULL. If not NULL, it is the address assigned 283 * to the interface by the manufacturer, so it very likely 284 * to be unique. It MUST NOT be deleted. It is highly 285 * suitable for deriving the EUI64 for the interface. 286 */ 287 struct ifaddr *if_hwdl; 288 const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */ 289 struct bridge_softc *if_bridge; /* bridge glue */ 290 struct bridge_iflist *if_bridgeif; /* shortcut to interface list entry */ 291 int if_dlt; /* data link type (<net/dlt.h>) */ 292 pfil_head_t * if_pfil; /* filtering point */ 293 uint64_t if_capabilities; /* interface capabilities */ 294 uint64_t if_capenable; /* capabilities enabled */ 295 union { 296 void * carp_s; /* carp structure (used by !carp ifs) */ 297 struct ifnet *carp_d;/* ptr to carpdev (used by carp ifs) */ 298 } if_carp_ptr; 299 #define if_carp if_carp_ptr.carp_s 300 #define if_carpdev if_carp_ptr.carp_d 301 /* 302 * These are pre-computed based on an interfaces enabled 303 * capabilities, for speed elsewhere. 304 */ 305 int if_csum_flags_tx; /* M_CSUM_* flags for Tx */ 306 int if_csum_flags_rx; /* M_CSUM_* flags for Rx */ 307 308 void *if_afdata[AF_MAX]; 309 struct mowner *if_mowner; /* who owns mbufs for this interface */ 310 311 void *if_agrprivate; /* used only when #if NAGR > 0 */ 312 313 /* 314 * pf specific data, used only when #if NPF > 0. 315 */ 316 void *if_pf_kif; /* pf interface abstraction */ 317 void *if_pf_groups; /* pf interface groups */ 318 /* 319 * During an ifnet's lifetime, it has only one if_index, but 320 * and if_index is not sufficient to identify an ifnet 321 * because during the lifetime of the system, many ifnets may occupy a 322 * given if_index. Let us tell different ifnets at the same 323 * if_index apart by their if_index_gen, a unique number that each ifnet 324 * is assigned when it if_attach()s. Now, the kernel can use the 325 * pair (if_index, if_index_gen) as a weak reference to an ifnet. 326 */ 327 uint64_t if_index_gen; /* generation number for the ifnet 328 * at if_index: if two ifnets' index 329 * and generation number are both the 330 * same, they are the same ifnet. 331 */ 332 struct sysctllog *if_sysctl_log; 333 int (*if_initaddr)(struct ifnet *, struct ifaddr *, bool); 334 int (*if_mcastop)(struct ifnet *, const unsigned long, 335 const struct sockaddr *); 336 int (*if_setflags)(struct ifnet *, const short); 337 kmutex_t *if_ioctl_lock; 338 #ifdef _KERNEL /* XXX kvm(3) */ 339 struct callout *if_slowtimo_ch; 340 struct krwlock *if_afdata_lock; 341 struct if_percpuq *if_percpuq; /* We should remove it in the future */ 342 void *if_link_si; /* softint to handle link state changes */ 343 uint16_t if_link_queue; /* masked link state change queue */ 344 struct pslist_entry if_pslist_entry; 345 struct psref_target if_psref; 346 struct pslist_head if_addr_pslist; 347 struct if_deferred_start *if_deferred_start; 348 /* XXX should be protocol independent */ 349 LIST_HEAD(, in6_multi) if_multiaddrs; 350 #endif 351 } ifnet_t; 352 353 #define if_mtu if_data.ifi_mtu 354 #define if_type if_data.ifi_type 355 #define if_addrlen if_data.ifi_addrlen 356 #define if_hdrlen if_data.ifi_hdrlen 357 #define if_metric if_data.ifi_metric 358 #define if_link_state if_data.ifi_link_state 359 #define if_baudrate if_data.ifi_baudrate 360 #define if_ipackets if_data.ifi_ipackets 361 #define if_ierrors if_data.ifi_ierrors 362 #define if_opackets if_data.ifi_opackets 363 #define if_oerrors if_data.ifi_oerrors 364 #define if_collisions if_data.ifi_collisions 365 #define if_ibytes if_data.ifi_ibytes 366 #define if_obytes if_data.ifi_obytes 367 #define if_imcasts if_data.ifi_imcasts 368 #define if_omcasts if_data.ifi_omcasts 369 #define if_iqdrops if_data.ifi_iqdrops 370 #define if_noproto if_data.ifi_noproto 371 #define if_lastchange if_data.ifi_lastchange 372 373 #define IFF_UP 0x0001 /* interface is up */ 374 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 375 #define IFF_DEBUG 0x0004 /* turn on debugging */ 376 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 377 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 378 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */ 379 #define IFF_RUNNING 0x0040 /* resources allocated */ 380 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 381 #define IFF_PROMISC 0x0100 /* receive all packets */ 382 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 383 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 384 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 385 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 386 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 387 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 388 #define IFF_MULTICAST 0x8000 /* supports multicast */ 389 390 #define IFEF_MPSAFE __BIT(0) /* handlers can run in parallel (see below) */ 391 #define IFEF_NO_LINK_STATE_CHANGE __BIT(1) /* doesn't use link state interrupts */ 392 393 /* 394 * The following if_XXX() handlers don't take KERNEL_LOCK if the interface 395 * is set IFEF_MPSAFE: 396 * - if_start 397 * - if_output 398 * - if_ioctl 399 */ 400 401 #ifdef _KERNEL 402 static inline bool 403 if_is_mpsafe(struct ifnet *ifp) 404 { 405 406 return ((ifp->if_extflags & IFEF_MPSAFE) != 0); 407 } 408 409 static inline int 410 if_output_lock(struct ifnet *cifp, struct ifnet *ifp, struct mbuf *m, 411 const struct sockaddr *dst, const struct rtentry *rt) 412 { 413 414 if (if_is_mpsafe(cifp)) { 415 return (*cifp->if_output)(ifp, m, dst, rt); 416 } else { 417 int ret; 418 419 KERNEL_LOCK(1, NULL); 420 ret = (*cifp->if_output)(ifp, m, dst, rt); 421 KERNEL_UNLOCK_ONE(NULL); 422 return ret; 423 } 424 } 425 426 static inline void 427 if_start_lock(struct ifnet *ifp) 428 { 429 430 if (if_is_mpsafe(ifp)) { 431 (*ifp->if_start)(ifp); 432 } else { 433 KERNEL_LOCK(1, NULL); 434 (*ifp->if_start)(ifp); 435 KERNEL_UNLOCK_ONE(NULL); 436 } 437 } 438 439 static inline bool 440 if_is_link_state_changeable(struct ifnet *ifp) 441 { 442 443 return ((ifp->if_extflags & IFEF_NO_LINK_STATE_CHANGE) == 0); 444 } 445 446 #define KERNEL_LOCK_IF_IFP_MPSAFE(ifp) \ 447 do { if (if_is_mpsafe(ifp)) { KERNEL_LOCK(1, NULL); } } while (0) 448 #define KERNEL_UNLOCK_IF_IFP_MPSAFE(ifp) \ 449 do { if (if_is_mpsafe(ifp)) { KERNEL_UNLOCK_ONE(NULL); } } while (0) 450 451 #define KERNEL_LOCK_UNLESS_IFP_MPSAFE(ifp) \ 452 do { if (!if_is_mpsafe(ifp)) { KERNEL_LOCK(1, NULL); } } while (0) 453 #define KERNEL_UNLOCK_UNLESS_IFP_MPSAFE(ifp) \ 454 do { if (!if_is_mpsafe(ifp)) { KERNEL_UNLOCK_ONE(NULL); } } while (0) 455 456 #ifdef _KERNEL_OPT 457 #include "opt_net_mpsafe.h" 458 #endif 459 460 /* XXX explore a better place to define */ 461 #ifdef NET_MPSAFE 462 463 #define KERNEL_LOCK_UNLESS_NET_MPSAFE() do { } while (0) 464 #define KERNEL_UNLOCK_UNLESS_NET_MPSAFE() do { } while (0) 465 466 #define SOFTNET_LOCK_UNLESS_NET_MPSAFE() do { } while (0) 467 #define SOFTNET_UNLOCK_UNLESS_NET_MPSAFE() do { } while (0) 468 469 #else /* NET_MPSAFE */ 470 471 #define KERNEL_LOCK_UNLESS_NET_MPSAFE() \ 472 do { KERNEL_LOCK(1, NULL); } while (0) 473 #define KERNEL_UNLOCK_UNLESS_NET_MPSAFE() \ 474 do { KERNEL_UNLOCK_ONE(NULL); } while (0) 475 476 #define SOFTNET_LOCK_UNLESS_NET_MPSAFE() \ 477 do { mutex_enter(softnet_lock); } while (0) 478 #define SOFTNET_UNLOCK_UNLESS_NET_MPSAFE() \ 479 do { mutex_exit(softnet_lock); } while (0) 480 481 #endif /* NET_MPSAFE */ 482 483 #define SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE() \ 484 do { \ 485 SOFTNET_LOCK_UNLESS_NET_MPSAFE(); \ 486 KERNEL_LOCK_UNLESS_NET_MPSAFE(); \ 487 } while (0) 488 489 #define SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE() \ 490 do { \ 491 KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); \ 492 SOFTNET_UNLOCK_UNLESS_NET_MPSAFE(); \ 493 } while (0) 494 495 #endif /* _KERNEL */ 496 497 #define IFFBITS \ 498 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS" \ 499 "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \ 500 "\15LINK0\16LINK1\17LINK2\20MULTICAST" 501 502 /* flags set internally only: */ 503 #define IFF_CANTCHANGE \ 504 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 505 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 506 507 /* 508 * Some convenience macros used for setting ifi_baudrate. 509 */ 510 #define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */ 511 #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ 512 #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */ 513 514 /* Capabilities that interfaces can advertise. */ 515 /* 0x01 .. 0x40 were previously used */ 516 #define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */ 517 #define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */ 518 #define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */ 519 #define IFCAP_CSUM_TCPv4_Rx 0x00400 /* can do IPv4/TCP checksums (Rx) */ 520 #define IFCAP_CSUM_TCPv4_Tx 0x00800 /* can do IPv4/TCP checksums (Tx) */ 521 #define IFCAP_CSUM_UDPv4_Rx 0x01000 /* can do IPv4/UDP checksums (Rx) */ 522 #define IFCAP_CSUM_UDPv4_Tx 0x02000 /* can do IPv4/UDP checksums (Tx) */ 523 #define IFCAP_CSUM_TCPv6_Rx 0x04000 /* can do IPv6/TCP checksums (Rx) */ 524 #define IFCAP_CSUM_TCPv6_Tx 0x08000 /* can do IPv6/TCP checksums (Tx) */ 525 #define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */ 526 #define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */ 527 #define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */ 528 #define IFCAP_LRO 0x80000 /* can do Large Receive Offload */ 529 #define IFCAP_MASK 0xfff80 /* currently valid capabilities */ 530 531 #define IFCAPBITS \ 532 "\020" \ 533 "\10TSO4" \ 534 "\11IP4CSUM_Rx" \ 535 "\12IP4CSUM_Tx" \ 536 "\13TCP4CSUM_Rx" \ 537 "\14TCP4CSUM_Tx" \ 538 "\15UDP4CSUM_Rx" \ 539 "\16UDP4CSUM_Tx" \ 540 "\17TCP6CSUM_Rx" \ 541 "\20TCP6CSUM_Tx" \ 542 "\21UDP6CSUM_Rx" \ 543 "\22UDP6CSUM_Tx" \ 544 "\23TSO6" \ 545 "\24LRO" \ 546 547 #define IF_AFDATA_LOCK_INIT(ifp) \ 548 do {(ifp)->if_afdata_lock = rw_obj_alloc();} while (0) 549 550 #define IF_AFDATA_LOCK_DESTROY(ifp) rw_obj_free((ifp)->if_afdata_lock) 551 552 #define IF_AFDATA_WLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_WRITER) 553 #define IF_AFDATA_RLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_READER) 554 #define IF_AFDATA_WUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 555 #define IF_AFDATA_RUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 556 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 557 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 558 #define IF_AFDATA_TRYLOCK(ifp) rw_tryenter((ifp)->if_afdata_lock, RW_WRITER) 559 560 #define IF_AFDATA_LOCK_ASSERT(ifp) \ 561 KASSERT(rw_lock_held((ifp)->if_afdata_lock)) 562 #define IF_AFDATA_RLOCK_ASSERT(ifp) \ 563 KASSERT(rw_read_held((ifp)->if_afdata_lock)) 564 #define IF_AFDATA_WLOCK_ASSERT(ifp) \ 565 KASSERT(rw_write_held((ifp)->if_afdata_lock)) 566 567 /* 568 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 569 * input routines have queues of messages stored on ifqueue structures 570 * (defined above). Entries are added to and deleted from these structures 571 * by these macros, which should be called with ipl raised to splnet(). 572 */ 573 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 574 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 575 #define IF_ENQUEUE(ifq, m) do { \ 576 (m)->m_nextpkt = 0; \ 577 if ((ifq)->ifq_tail == 0) \ 578 (ifq)->ifq_head = m; \ 579 else \ 580 (ifq)->ifq_tail->m_nextpkt = m; \ 581 (ifq)->ifq_tail = m; \ 582 (ifq)->ifq_len++; \ 583 } while (/*CONSTCOND*/0) 584 #define IF_PREPEND(ifq, m) do { \ 585 (m)->m_nextpkt = (ifq)->ifq_head; \ 586 if ((ifq)->ifq_tail == 0) \ 587 (ifq)->ifq_tail = (m); \ 588 (ifq)->ifq_head = (m); \ 589 (ifq)->ifq_len++; \ 590 } while (/*CONSTCOND*/0) 591 #define IF_DEQUEUE(ifq, m) do { \ 592 (m) = (ifq)->ifq_head; \ 593 if (m) { \ 594 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 595 (ifq)->ifq_tail = 0; \ 596 (m)->m_nextpkt = 0; \ 597 (ifq)->ifq_len--; \ 598 } \ 599 } while (/*CONSTCOND*/0) 600 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 601 #define IF_PURGE(ifq) \ 602 do { \ 603 struct mbuf *__m0; \ 604 \ 605 for (;;) { \ 606 IF_DEQUEUE((ifq), __m0); \ 607 if (__m0 == NULL) \ 608 break; \ 609 else \ 610 m_freem(__m0); \ 611 } \ 612 } while (/*CONSTCOND*/ 0) 613 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 614 615 #ifndef IFQ_MAXLEN 616 #define IFQ_MAXLEN 256 617 #endif 618 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 619 620 /* 621 * Structure defining statistics and other data kept regarding an address 622 * on a network interface. 623 */ 624 struct ifaddr_data { 625 int64_t ifad_inbytes; 626 int64_t ifad_outbytes; 627 }; 628 629 /* 630 * The ifaddr structure contains information about one address 631 * of an interface. They are maintained by the different address families, 632 * are allocated and attached when an address is set, and are linked 633 * together so all addresses for an interface can be located. 634 */ 635 struct ifaddr { 636 struct sockaddr *ifa_addr; /* address of interface */ 637 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 638 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 639 struct sockaddr *ifa_netmask; /* used to determine subnet */ 640 struct ifnet *ifa_ifp; /* back-pointer to interface */ 641 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 642 struct ifaddr_data ifa_data; /* statistics on the address */ 643 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 644 (int, struct rtentry *, const struct rt_addrinfo *); 645 u_int ifa_flags; /* mostly rt_flags for cloning */ 646 int ifa_refcnt; /* count of references */ 647 int ifa_metric; /* cost of going out this interface */ 648 struct ifaddr *(*ifa_getifa)(struct ifaddr *, 649 const struct sockaddr *); 650 uint32_t *ifa_seqno; 651 int16_t ifa_preference; /* preference level for this address */ 652 #ifdef _KERNEL 653 struct pslist_entry ifa_pslist_entry; 654 struct psref_target ifa_psref; 655 #endif 656 }; 657 #define IFA_ROUTE RTF_UP /* (0x01) route installed */ 658 #define IFA_DESTROYING 0x2 659 660 /* 661 * Message format for use in obtaining information about interfaces from 662 * sysctl and the routing socket. We need to force 64-bit alignment if we 663 * aren't using compatiblity definitons. 664 */ 665 #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK) 666 #define __align64 __aligned(sizeof(uint64_t)) 667 #else 668 #define __align64 669 #endif 670 struct if_msghdr { 671 u_short ifm_msglen __align64; 672 /* to skip over non-understood messages */ 673 u_char ifm_version; /* future binary compatibility */ 674 u_char ifm_type; /* message type */ 675 int ifm_addrs; /* like rtm_addrs */ 676 int ifm_flags; /* value of if_flags */ 677 u_short ifm_index; /* index for associated ifp */ 678 struct if_data ifm_data __align64; 679 /* statistics and other data about if */ 680 }; 681 682 /* 683 * Message format for use in obtaining information about interface addresses 684 * from sysctl and the routing socket. 685 */ 686 struct ifa_msghdr { 687 u_short ifam_msglen __align64; 688 /* to skip over non-understood messages */ 689 u_char ifam_version; /* future binary compatibility */ 690 u_char ifam_type; /* message type */ 691 u_short ifam_index; /* index for associated ifp */ 692 int ifam_flags; /* value of ifa_flags */ 693 int ifam_addrs; /* like rtm_addrs */ 694 pid_t ifam_pid; /* identify sender */ 695 int ifam_addrflags; /* family specific address flags */ 696 int ifam_metric; /* value of ifa_metric */ 697 }; 698 699 /* 700 * Message format announcing the arrival or departure of a network interface. 701 */ 702 struct if_announcemsghdr { 703 u_short ifan_msglen __align64; 704 /* to skip over non-understood messages */ 705 u_char ifan_version; /* future binary compatibility */ 706 u_char ifan_type; /* message type */ 707 u_short ifan_index; /* index for associated ifp */ 708 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 709 u_short ifan_what; /* what type of announcement */ 710 }; 711 712 #define IFAN_ARRIVAL 0 /* interface arrival */ 713 #define IFAN_DEPARTURE 1 /* interface departure */ 714 715 #undef __align64 716 717 /* 718 * Interface request structure used for socket 719 * ioctl's. All interface ioctl's must have parameter 720 * definitions which begin with ifr_name. The 721 * remainder may be interface specific. 722 */ 723 struct ifreq { 724 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 725 union { 726 struct sockaddr ifru_addr; 727 struct sockaddr ifru_dstaddr; 728 struct sockaddr ifru_broadaddr; 729 struct sockaddr_storage ifru_space; 730 short ifru_flags; 731 int ifru_addrflags; 732 int ifru_metric; 733 int ifru_mtu; 734 int ifru_dlt; 735 u_int ifru_value; 736 void * ifru_data; 737 struct { 738 uint32_t b_buflen; 739 void *b_buf; 740 } ifru_b; 741 } ifr_ifru; 742 #define ifr_addr ifr_ifru.ifru_addr /* address */ 743 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 744 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 745 #define ifr_space ifr_ifru.ifru_space /* sockaddr_storage */ 746 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 747 #define ifr_addrflags ifr_ifru.ifru_addrflags /* addr flags */ 748 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 749 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 750 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 751 #define ifr_value ifr_ifru.ifru_value /* generic value */ 752 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 753 #define ifr_data ifr_ifru.ifru_data /* for use by interface 754 * XXX deprecated 755 */ 756 #define ifr_buf ifr_ifru.ifru_b.b_buf /* new interface ioctls */ 757 #define ifr_buflen ifr_ifru.ifru_b.b_buflen 758 #define ifr_index ifr_ifru.ifru_value /* interface index, BSD */ 759 #define ifr_ifindex ifr_index /* interface index, linux */ 760 }; 761 762 #ifdef _KERNEL 763 #define ifreq_setdstaddr ifreq_setaddr 764 #define ifreq_setbroadaddr ifreq_setaddr 765 #define ifreq_getdstaddr ifreq_getaddr 766 #define ifreq_getbroadaddr ifreq_getaddr 767 768 static inline const struct sockaddr * 769 /*ARGSUSED*/ 770 ifreq_getaddr(u_long cmd, const struct ifreq *ifr) 771 { 772 return &ifr->ifr_addr; 773 } 774 #endif /* _KERNEL */ 775 776 struct ifcapreq { 777 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 778 uint64_t ifcr_capabilities; /* supported capabiliites */ 779 uint64_t ifcr_capenable; /* capabilities enabled */ 780 }; 781 782 struct ifaliasreq { 783 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 784 struct sockaddr ifra_addr; 785 struct sockaddr ifra_dstaddr; 786 #define ifra_broadaddr ifra_dstaddr 787 struct sockaddr ifra_mask; 788 }; 789 790 struct ifdatareq { 791 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 792 struct if_data ifdr_data; 793 }; 794 795 struct ifmediareq { 796 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 797 int ifm_current; /* current media options */ 798 int ifm_mask; /* don't care mask */ 799 int ifm_status; /* media status */ 800 int ifm_active; /* active options */ 801 int ifm_count; /* # entries in ifm_ulist 802 array */ 803 int *ifm_ulist; /* media words */ 804 }; 805 806 807 struct ifdrv { 808 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 809 unsigned long ifd_cmd; 810 size_t ifd_len; 811 void *ifd_data; 812 }; 813 #define IFLINKSTR_QUERYLEN 0x01 814 #define IFLINKSTR_UNSET 0x02 815 816 /* 817 * Structure used in SIOCGIFCONF request. 818 * Used to retrieve interface configuration 819 * for machine (useful for programs which 820 * must know all networks accessible). 821 */ 822 struct ifconf { 823 int ifc_len; /* size of associated buffer */ 824 union { 825 void * ifcu_buf; 826 struct ifreq *ifcu_req; 827 } ifc_ifcu; 828 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 829 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 830 }; 831 832 /* 833 * Structure for SIOC[AGD]LIFADDR 834 */ 835 struct if_laddrreq { 836 char iflr_name[IFNAMSIZ]; 837 unsigned int flags; 838 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 839 #define IFLR_ACTIVE 0x4000 /* in/out: link-layer address activation */ 840 #define IFLR_FACTORY 0x2000 /* in/out: factory link-layer address */ 841 unsigned int prefixlen; /* in/out */ 842 struct sockaddr_storage addr; /* in/out */ 843 struct sockaddr_storage dstaddr; /* out */ 844 }; 845 846 /* 847 * Structure for SIOC[SG]IFADDRPREF 848 */ 849 struct if_addrprefreq { 850 char ifap_name[IFNAMSIZ]; 851 int16_t ifap_preference; /* in/out */ 852 struct sockaddr_storage ifap_addr; /* in/out */ 853 }; 854 855 #include <net/if_arp.h> 856 857 #endif /* _NETBSD_SOURCE */ 858 859 #ifdef _KERNEL 860 #ifdef ALTQ 861 #define IFQ_ENQUEUE(ifq, m, err) \ 862 do { \ 863 mutex_enter((ifq)->ifq_lock); \ 864 if (ALTQ_IS_ENABLED((ifq))) \ 865 ALTQ_ENQUEUE((ifq), (m), (err)); \ 866 else { \ 867 if (IF_QFULL((ifq))) { \ 868 m_freem((m)); \ 869 (err) = ENOBUFS; \ 870 } else { \ 871 IF_ENQUEUE((ifq), (m)); \ 872 (err) = 0; \ 873 } \ 874 } \ 875 if ((err)) \ 876 (ifq)->ifq_drops++; \ 877 mutex_exit((ifq)->ifq_lock); \ 878 } while (/*CONSTCOND*/ 0) 879 880 #define IFQ_DEQUEUE(ifq, m) \ 881 do { \ 882 mutex_enter((ifq)->ifq_lock); \ 883 if (TBR_IS_ENABLED((ifq))) \ 884 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 885 else if (ALTQ_IS_ENABLED((ifq))) \ 886 ALTQ_DEQUEUE((ifq), (m)); \ 887 else \ 888 IF_DEQUEUE((ifq), (m)); \ 889 mutex_exit((ifq)->ifq_lock); \ 890 } while (/*CONSTCOND*/ 0) 891 892 #define IFQ_POLL(ifq, m) \ 893 do { \ 894 mutex_enter((ifq)->ifq_lock); \ 895 if (TBR_IS_ENABLED((ifq))) \ 896 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 897 else if (ALTQ_IS_ENABLED((ifq))) \ 898 ALTQ_POLL((ifq), (m)); \ 899 else \ 900 IF_POLL((ifq), (m)); \ 901 mutex_exit((ifq)->ifq_lock); \ 902 } while (/*CONSTCOND*/ 0) 903 904 #define IFQ_PURGE(ifq) \ 905 do { \ 906 mutex_enter((ifq)->ifq_lock); \ 907 if (ALTQ_IS_ENABLED((ifq))) \ 908 ALTQ_PURGE((ifq)); \ 909 else \ 910 IF_PURGE((ifq)); \ 911 mutex_exit((ifq)->ifq_lock); \ 912 } while (/*CONSTCOND*/ 0) 913 914 #define IFQ_SET_READY(ifq) \ 915 do { \ 916 (ifq)->altq_flags |= ALTQF_READY; \ 917 } while (/*CONSTCOND*/ 0) 918 919 #define IFQ_CLASSIFY(ifq, m, af) \ 920 do { \ 921 mutex_enter((ifq)->ifq_lock); \ 922 if (ALTQ_IS_ENABLED((ifq))) { \ 923 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 924 m->m_pkthdr.pattr_class = (*(ifq)->altq_classify) \ 925 ((ifq)->altq_clfier, (m), (af)); \ 926 m->m_pkthdr.pattr_af = (af); \ 927 m->m_pkthdr.pattr_hdr = mtod((m), void *); \ 928 } \ 929 mutex_exit((ifq)->ifq_lock); \ 930 } while (/*CONSTCOND*/ 0) 931 #else /* ! ALTQ */ 932 #define IFQ_ENQUEUE(ifq, m, err) \ 933 do { \ 934 mutex_enter((ifq)->ifq_lock); \ 935 if (IF_QFULL((ifq))) { \ 936 m_freem((m)); \ 937 (err) = ENOBUFS; \ 938 } else { \ 939 IF_ENQUEUE((ifq), (m)); \ 940 (err) = 0; \ 941 } \ 942 if ((err)) \ 943 (ifq)->ifq_drops++; \ 944 mutex_exit((ifq)->ifq_lock); \ 945 } while (/*CONSTCOND*/ 0) 946 947 #define IFQ_DEQUEUE(ifq, m) \ 948 do { \ 949 mutex_enter((ifq)->ifq_lock); \ 950 IF_DEQUEUE((ifq), (m)); \ 951 mutex_exit((ifq)->ifq_lock); \ 952 } while (/*CONSTCOND*/ 0) 953 954 #define IFQ_POLL(ifq, m) \ 955 do { \ 956 mutex_enter((ifq)->ifq_lock); \ 957 IF_POLL((ifq), (m)); \ 958 mutex_exit((ifq)->ifq_lock); \ 959 } while (/*CONSTCOND*/ 0) 960 961 #define IFQ_PURGE(ifq) \ 962 do { \ 963 mutex_enter((ifq)->ifq_lock); \ 964 IF_PURGE((ifq)); \ 965 mutex_exit((ifq)->ifq_lock); \ 966 } while (/*CONSTCOND*/ 0) 967 968 #define IFQ_SET_READY(ifq) /* nothing */ 969 970 #define IFQ_CLASSIFY(ifq, m, af) /* nothing */ 971 972 #endif /* ALTQ */ 973 974 #define IFQ_LOCK_INIT(ifq) (ifq)->ifq_lock = \ 975 mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET) 976 #define IFQ_LOCK_DESTROY(ifq) mutex_obj_free((ifq)->ifq_lock) 977 #define IFQ_LOCK(ifq) mutex_enter((ifq)->ifq_lock) 978 #define IFQ_UNLOCK(ifq) mutex_exit((ifq)->ifq_lock) 979 980 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 981 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 982 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 983 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 984 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 985 986 #include <sys/mallocvar.h> 987 MALLOC_DECLARE(M_IFADDR); 988 MALLOC_DECLARE(M_IFMADDR); 989 990 int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *); 991 992 struct ifnet *if_alloc(u_char); 993 void if_free(struct ifnet *); 994 void if_initname(struct ifnet *, const char *, int); 995 struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **); 996 void if_activate_sadl(struct ifnet *, struct ifaddr *, 997 const struct sockaddr_dl *); 998 void if_set_sadl(struct ifnet *, const void *, u_char, bool); 999 void if_alloc_sadl(struct ifnet *); 1000 int if_initialize(struct ifnet *); 1001 void if_register(struct ifnet *); 1002 int if_attach(struct ifnet *); /* Deprecated. Use if_initialize and if_register */ 1003 void if_attachdomain(void); 1004 void if_deactivate(struct ifnet *); 1005 bool if_is_deactivated(const struct ifnet *); 1006 void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *)); 1007 void if_detach(struct ifnet *); 1008 void if_down(struct ifnet *); 1009 void if_link_state_change(struct ifnet *, int); 1010 void if_link_state_change_softint(struct ifnet *, int); 1011 void if_up(struct ifnet *); 1012 void ifinit(void); 1013 void ifinit1(void); 1014 int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *); 1015 extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *); 1016 int ifioctl_common(struct ifnet *, u_long, void *); 1017 int ifpromisc(struct ifnet *, int); 1018 int if_addr_init(ifnet_t *, struct ifaddr *, bool); 1019 int if_do_dad(struct ifnet *); 1020 int if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *); 1021 int if_flags_set(struct ifnet *, const short); 1022 int if_clone_list(int, char *, int *); 1023 1024 struct ifnet *ifunit(const char *); 1025 struct ifnet *if_get(const char *, struct psref *); 1026 ifnet_t *if_byindex(u_int); 1027 ifnet_t *if_get_byindex(u_int, struct psref *); 1028 ifnet_t *if_get_bylla(const void *, unsigned char, struct psref *); 1029 void if_put(const struct ifnet *, struct psref *); 1030 void if_acquire(struct ifnet *, struct psref *); 1031 #define if_release if_put 1032 1033 static inline if_index_t 1034 if_get_index(const struct ifnet *ifp) 1035 { 1036 1037 return ifp != NULL ? ifp->if_index : 0; 1038 } 1039 1040 bool if_held(struct ifnet *); 1041 1042 void if_input(struct ifnet *, struct mbuf *); 1043 1044 struct if_percpuq * 1045 if_percpuq_create(struct ifnet *); 1046 void if_percpuq_destroy(struct if_percpuq *); 1047 void 1048 if_percpuq_enqueue(struct if_percpuq *, struct mbuf *); 1049 1050 void if_deferred_start_init(struct ifnet *, void (*)(struct ifnet *)); 1051 void if_schedule_deferred_start(struct ifnet *); 1052 1053 void ifa_insert(struct ifnet *, struct ifaddr *); 1054 void ifa_remove(struct ifnet *, struct ifaddr *); 1055 1056 void ifa_psref_init(struct ifaddr *); 1057 void ifa_acquire(struct ifaddr *, struct psref *); 1058 void ifa_release(struct ifaddr *, struct psref *); 1059 bool ifa_held(struct ifaddr *); 1060 bool ifa_is_destroying(struct ifaddr *); 1061 1062 void ifaref(struct ifaddr *); 1063 void ifafree(struct ifaddr *); 1064 1065 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 1066 struct ifaddr *ifa_ifwithaddr_psref(const struct sockaddr *, struct psref *); 1067 struct ifaddr *ifa_ifwithaf(int); 1068 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *); 1069 struct ifaddr *ifa_ifwithdstaddr_psref(const struct sockaddr *, 1070 struct psref *); 1071 struct ifaddr *ifa_ifwithnet(const struct sockaddr *); 1072 struct ifaddr *ifa_ifwithnet_psref(const struct sockaddr *, struct psref *); 1073 struct ifaddr *ifa_ifwithladdr(const struct sockaddr *); 1074 struct ifaddr *ifa_ifwithladdr_psref(const struct sockaddr *, struct psref *); 1075 struct ifaddr *ifa_ifwithroute_psref(int, const struct sockaddr *, 1076 const struct sockaddr *, struct psref *); 1077 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 1078 struct ifaddr *ifaof_ifpforaddr_psref(const struct sockaddr *, struct ifnet *, 1079 struct psref *); 1080 void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 1081 void p2p_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 1082 1083 void if_clone_attach(struct if_clone *); 1084 void if_clone_detach(struct if_clone *); 1085 1086 int if_transmit_lock(struct ifnet *, struct mbuf *); 1087 1088 int ifq_enqueue(struct ifnet *, struct mbuf *); 1089 int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf *); 1090 1091 int loioctl(struct ifnet *, u_long, void *); 1092 void loopattach(int); 1093 void loopinit(void); 1094 int looutput(struct ifnet *, 1095 struct mbuf *, const struct sockaddr *, const struct rtentry *); 1096 1097 /* 1098 * These are exported because they're an easy way to tell if 1099 * an interface is going away without having to burn a flag. 1100 */ 1101 int if_nulloutput(struct ifnet *, struct mbuf *, 1102 const struct sockaddr *, const struct rtentry *); 1103 void if_nullinput(struct ifnet *, struct mbuf *); 1104 void if_nullstart(struct ifnet *); 1105 int if_nulltransmit(struct ifnet *, struct mbuf *); 1106 int if_nullioctl(struct ifnet *, u_long, void *); 1107 int if_nullinit(struct ifnet *); 1108 void if_nullstop(struct ifnet *, int); 1109 void if_nullslowtimo(struct ifnet *); 1110 #define if_nullwatchdog if_nullslowtimo 1111 void if_nulldrain(struct ifnet *); 1112 #else 1113 struct if_nameindex { 1114 unsigned int if_index; /* 1, 2, ... */ 1115 char *if_name; /* null terminated name: "le0", ... */ 1116 }; 1117 1118 #include <sys/cdefs.h> 1119 __BEGIN_DECLS 1120 unsigned int if_nametoindex(const char *); 1121 char * if_indextoname(unsigned int, char *); 1122 struct if_nameindex * if_nameindex(void); 1123 void if_freenameindex(struct if_nameindex *); 1124 __END_DECLS 1125 #endif /* _KERNEL */ /* XXX really ALTQ? */ 1126 1127 #ifdef _KERNEL 1128 1129 #define IFADDR_FIRST(__ifp) TAILQ_FIRST(&(__ifp)->if_addrlist) 1130 #define IFADDR_NEXT(__ifa) TAILQ_NEXT((__ifa), ifa_list) 1131 #define IFADDR_FOREACH(__ifa, __ifp) TAILQ_FOREACH(__ifa, \ 1132 &(__ifp)->if_addrlist, ifa_list) 1133 #define IFADDR_FOREACH_SAFE(__ifa, __ifp, __nifa) \ 1134 TAILQ_FOREACH_SAFE(__ifa, \ 1135 &(__ifp)->if_addrlist, ifa_list, __nifa) 1136 #define IFADDR_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist) 1137 1138 #define IFADDR_ENTRY_INIT(__ifa) \ 1139 PSLIST_ENTRY_INIT((__ifa), ifa_pslist_entry) 1140 #define IFADDR_ENTRY_DESTROY(__ifa) \ 1141 PSLIST_ENTRY_DESTROY((__ifa), ifa_pslist_entry) 1142 #define IFADDR_READER_EMPTY(__ifp) \ 1143 (PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1144 ifa_pslist_entry) == NULL) 1145 #define IFADDR_READER_FIRST(__ifp) \ 1146 PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1147 ifa_pslist_entry) 1148 #define IFADDR_READER_NEXT(__ifa) \ 1149 PSLIST_READER_NEXT((__ifa), struct ifaddr, ifa_pslist_entry) 1150 #define IFADDR_READER_FOREACH(__ifa, __ifp) \ 1151 PSLIST_READER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ 1152 ifa_pslist_entry) 1153 #define IFADDR_WRITER_INSERT_HEAD(__ifp, __ifa) \ 1154 PSLIST_WRITER_INSERT_HEAD(&(__ifp)->if_addr_pslist, (__ifa), \ 1155 ifa_pslist_entry) 1156 #define IFADDR_WRITER_REMOVE(__ifa) \ 1157 PSLIST_WRITER_REMOVE((__ifa), ifa_pslist_entry) 1158 #define IFADDR_WRITER_FOREACH(__ifa, __ifp) \ 1159 PSLIST_WRITER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ 1160 ifa_pslist_entry) 1161 #define IFADDR_WRITER_NEXT(__ifp) \ 1162 PSLIST_WRITER_NEXT((__ifp), struct ifaddr, ifa_pslist_entry) 1163 #define IFADDR_WRITER_INSERT_AFTER(__ifp, __new) \ 1164 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), ifa_pslist_entry) 1165 #define IFADDR_WRITER_EMPTY(__ifp) \ 1166 (PSLIST_WRITER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1167 ifa_pslist_entry) == NULL) 1168 #define IFADDR_WRITER_INSERT_TAIL(__ifp, __new) \ 1169 do { \ 1170 if (IFADDR_WRITER_EMPTY((__ifp))) { \ 1171 IFADDR_WRITER_INSERT_HEAD((__ifp), (__new)); \ 1172 } else { \ 1173 struct ifaddr *__ifa; \ 1174 IFADDR_WRITER_FOREACH(__ifa, (__ifp)) { \ 1175 if (IFADDR_WRITER_NEXT(__ifa) == NULL) {\ 1176 IFADDR_WRITER_INSERT_AFTER(__ifa,\ 1177 (__new)); \ 1178 break; \ 1179 } \ 1180 } \ 1181 } \ 1182 } while (0) 1183 1184 #define IFNET_LOCK() mutex_enter(&ifnet_mtx) 1185 #define IFNET_UNLOCK() mutex_exit(&ifnet_mtx) 1186 #define IFNET_LOCKED() mutex_owned(&ifnet_mtx) 1187 1188 #define IFNET_READER_EMPTY() \ 1189 (PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1190 #define IFNET_READER_FIRST() \ 1191 PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) 1192 #define IFNET_READER_NEXT(__ifp) \ 1193 PSLIST_READER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1194 #define IFNET_READER_FOREACH(__ifp) \ 1195 PSLIST_READER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1196 if_pslist_entry) 1197 #define IFNET_WRITER_INSERT_HEAD(__ifp) \ 1198 PSLIST_WRITER_INSERT_HEAD(&ifnet_pslist, (__ifp), if_pslist_entry) 1199 #define IFNET_WRITER_REMOVE(__ifp) \ 1200 PSLIST_WRITER_REMOVE((__ifp), if_pslist_entry) 1201 #define IFNET_WRITER_FOREACH(__ifp) \ 1202 PSLIST_WRITER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1203 if_pslist_entry) 1204 #define IFNET_WRITER_NEXT(__ifp) \ 1205 PSLIST_WRITER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1206 #define IFNET_WRITER_INSERT_AFTER(__ifp, __new) \ 1207 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), if_pslist_entry) 1208 #define IFNET_WRITER_EMPTY() \ 1209 (PSLIST_WRITER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1210 #define IFNET_WRITER_INSERT_TAIL(__new) \ 1211 do { \ 1212 if (IFNET_WRITER_EMPTY()) { \ 1213 IFNET_WRITER_INSERT_HEAD((__new)); \ 1214 } else { \ 1215 struct ifnet *__ifp; \ 1216 IFNET_WRITER_FOREACH(__ifp) { \ 1217 if (IFNET_WRITER_NEXT(__ifp) == NULL) { \ 1218 IFNET_WRITER_INSERT_AFTER(__ifp,\ 1219 (__new)); \ 1220 break; \ 1221 } \ 1222 } \ 1223 } \ 1224 } while (0) 1225 1226 extern struct pslist_head ifnet_pslist; 1227 extern kmutex_t ifnet_mtx; 1228 1229 extern struct ifnet *lo0ifp; 1230 1231 /* 1232 * ifq sysctl support 1233 */ 1234 int sysctl_ifq(int *name, u_int namelen, void *oldp, 1235 size_t *oldlenp, void *newp, size_t newlen, 1236 struct ifqueue *ifq); 1237 /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 1238 #define IFQCTL_LEN 1 1239 #define IFQCTL_MAXLEN 2 1240 #define IFQCTL_PEAK 3 1241 #define IFQCTL_DROPS 4 1242 #define IFQCTL_MAXID 5 1243 1244 #endif /* _KERNEL */ 1245 1246 #ifdef _NETBSD_SOURCE 1247 /* 1248 * sysctl for ifq (per-protocol packet input queue variant of ifqueue) 1249 */ 1250 #define CTL_IFQ_NAMES { \ 1251 { 0, 0 }, \ 1252 { "len", CTLTYPE_INT }, \ 1253 { "maxlen", CTLTYPE_INT }, \ 1254 { "peak", CTLTYPE_INT }, \ 1255 { "drops", CTLTYPE_INT }, \ 1256 } 1257 #endif /* _NETBSD_SOURCE */ 1258 #endif /* !_NET_IF_H_ */ 1259
Indexes created Tue Sep 23 02:09:52 GMT 2025