if.h revision 1.271
1 /* $NetBSD: if.h,v 1.271 2019/05/10 06:45:19 msaitoh 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 #include <sys/module_hook.h> 92 #endif 93 94 /* 95 * Always include ALTQ glue here -- we use the ALTQ interface queue 96 * structure even when ALTQ is not configured into the kernel so that 97 * the size of struct ifnet does not changed based on the option. The 98 * ALTQ queue structure is API-compatible with the legacy ifqueue. 99 */ 100 #include <altq/if_altq.h> 101 102 /* 103 * Structures defining a network interface, providing a packet 104 * transport mechanism (ala level 0 of the PUP protocols). 105 * 106 * Each interface accepts output datagrams of a specified maximum 107 * length, and provides higher level routines with input datagrams 108 * received from its medium. 109 * 110 * Output occurs when the routine if_output is called, with four parameters: 111 * (*ifp->if_output)(ifp, m, dst, rt) 112 * Here m is the mbuf chain to be sent and dst is the destination address. 113 * The output routine encapsulates the supplied datagram if necessary, 114 * and then transmits it on its medium. 115 * 116 * On input, each interface unwraps the data received by it, and either 117 * places it on the input queue of a internetwork datagram routine 118 * and posts the associated software interrupt, or passes the datagram to a raw 119 * packet input routine. 120 * 121 * Routines exist for locating interfaces by their addresses 122 * or for locating a interface on a certain network, as well as more general 123 * routing and gateway routines maintaining information used to locate 124 * interfaces. These routines live in the files if.c and route.c 125 */ 126 #include <sys/time.h> 127 128 #if defined(_KERNEL_OPT) 129 #include "opt_compat_netbsd.h" 130 #include "opt_gateway.h" 131 #endif 132 133 struct mbuf; 134 struct proc; 135 struct rtentry; 136 struct socket; 137 struct ether_header; 138 struct ifaddr; 139 struct ifnet; 140 struct rt_addrinfo; 141 142 #define IFNAMSIZ IF_NAMESIZE 143 144 /* 145 * Structure describing a `cloning' interface. 146 */ 147 struct if_clone { 148 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 149 const char *ifc_name; /* name of device, e.g. `gif' */ 150 size_t ifc_namelen; /* length of name */ 151 152 int (*ifc_create)(struct if_clone *, int); 153 int (*ifc_destroy)(struct ifnet *); 154 }; 155 156 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 157 { { NULL, NULL }, name, sizeof(name) - 1, create, destroy } 158 159 /* 160 * Structure used to query names of interface cloners. 161 */ 162 struct if_clonereq { 163 int ifcr_total; /* total cloners (out) */ 164 int ifcr_count; /* room for this many in user buffer */ 165 char *ifcr_buffer; /* buffer for cloner names */ 166 }; 167 168 /* 169 * Structure defining statistics and other data kept regarding a network 170 * interface. 171 */ 172 struct if_data { 173 /* generic interface information */ 174 u_char ifi_type; /* ethernet, tokenring, etc. */ 175 u_char ifi_addrlen; /* media address length */ 176 u_char ifi_hdrlen; /* media header length */ 177 int ifi_link_state; /* current link state */ 178 uint64_t ifi_mtu; /* maximum transmission unit */ 179 uint64_t ifi_metric; /* routing metric (external only) */ 180 uint64_t ifi_baudrate; /* linespeed */ 181 /* volatile statistics */ 182 uint64_t ifi_ipackets; /* packets received on interface */ 183 uint64_t ifi_ierrors; /* input errors on interface */ 184 uint64_t ifi_opackets; /* packets sent on interface */ 185 uint64_t ifi_oerrors; /* output errors on interface */ 186 uint64_t ifi_collisions; /* collisions on csma interfaces */ 187 uint64_t ifi_ibytes; /* total number of octets received */ 188 uint64_t ifi_obytes; /* total number of octets sent */ 189 uint64_t ifi_imcasts; /* packets received via multicast */ 190 uint64_t ifi_omcasts; /* packets sent via multicast */ 191 uint64_t ifi_iqdrops; /* dropped on input, this interface */ 192 uint64_t ifi_noproto; /* destined for unsupported protocol */ 193 struct timespec ifi_lastchange;/* last operational state change */ 194 }; 195 196 /* 197 * Values for if_link_state. 198 */ 199 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 200 #define LINK_STATE_DOWN 1 /* link is down */ 201 #define LINK_STATE_UP 2 /* link is up */ 202 203 /* 204 * Structure defining a queue for a network interface. 205 */ 206 struct ifqueue { 207 struct mbuf *ifq_head; 208 struct mbuf *ifq_tail; 209 int ifq_len; 210 int ifq_maxlen; 211 int ifq_drops; 212 kmutex_t *ifq_lock; 213 }; 214 215 #ifdef _KERNEL 216 #include <sys/percpu.h> 217 #include <sys/callout.h> 218 #include <sys/rwlock.h> 219 220 #endif /* _KERNEL */ 221 222 /* 223 * Structure defining a queue for a network interface. 224 * 225 * (Would like to call this struct ``if'', but C isn't PL/1.) 226 */ 227 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 228 229 struct bridge_softc; 230 struct bridge_iflist; 231 struct callout; 232 struct krwlock; 233 struct if_percpuq; 234 struct if_deferred_start; 235 struct in6_multi; 236 237 typedef unsigned short if_index_t; 238 239 /* 240 * Interface. Field markings and the corresponding locks: 241 * 242 * i: IFNET_LOCK (a.k.a., if_ioctl_lock) 243 * q: ifq_lock (struct ifaltq) 244 * a: if_afdata_lock 245 * 6: in6_multilock (global lock) 246 * :: unlocked, stable 247 * ?: unkown, maybe unsafe 248 * 249 * Lock order: IFNET_LOCK => in6_multilock => if_afdata_lock => ifq_lock 250 * Note that currently if_afdata_lock and ifq_lock aren't held 251 * at the same time, but define the order anyway. 252 * 253 * Lock order of IFNET_LOCK with other locks: 254 * softnet_lock => solock => IFNET_LOCK => ND6_LOCK, in_multilock 255 */ 256 typedef struct ifnet { 257 void *if_softc; /* :: lower-level data for this if */ 258 /* DEPRECATED. Keep it to avoid breaking kvm(3) users */ 259 TAILQ_ENTRY(ifnet) 260 if_list; /* i: all struct ifnets are chained */ 261 TAILQ_HEAD(, ifaddr) 262 if_addrlist; /* i: linked list of addresses per if */ 263 char if_xname[IFNAMSIZ]; 264 /* :: external name (name + unit) */ 265 int if_pcount; /* i: number of promiscuous listeners */ 266 struct bpf_if *if_bpf; /* :: packet filter structure */ 267 if_index_t if_index; /* :: numeric abbreviation for this if */ 268 short if_timer; /* ?: time 'til if_slowtimo called */ 269 unsigned short if_flags; /* i: up/down, broadcast, etc. */ 270 short if_extflags; /* :: if_output MP-safe, etc. */ 271 struct if_data if_data; /* ?: statistics and other data about if */ 272 /* 273 * Procedure handles. If you add more of these, don't forget the 274 * corresponding NULL stub in if.c. 275 */ 276 int (*if_output) /* :: output routine (enqueue) */ 277 (struct ifnet *, struct mbuf *, const struct sockaddr *, 278 const struct rtentry *); 279 void (*_if_input) /* :: input routine (from h/w driver) */ 280 (struct ifnet *, struct mbuf *); 281 void (*if_start) /* :: initiate output routine */ 282 (struct ifnet *); 283 int (*if_transmit) /* :: output routine, must be MP-safe */ 284 (struct ifnet *, struct mbuf *); 285 int (*if_ioctl) /* :: ioctl routine */ 286 (struct ifnet *, u_long, void *); 287 int (*if_init) /* :: init routine */ 288 (struct ifnet *); 289 void (*if_stop) /* :: stop routine */ 290 (struct ifnet *, int); 291 void (*if_slowtimo) /* :: timer routine */ 292 (struct ifnet *); 293 #define if_watchdog if_slowtimo 294 void (*if_drain) /* :: routine to release resources */ 295 (struct ifnet *); 296 struct ifaltq if_snd; /* q: output queue (includes altq) */ 297 struct ifaddr *if_dl; /* i: identity of this interface. */ 298 const struct sockaddr_dl 299 *if_sadl; /* i: pointer to sockaddr_dl of if_dl */ 300 /* 301 * May be NULL. If not NULL, it is the address assigned 302 * to the interface by the manufacturer, so it very likely 303 * to be unique. It MUST NOT be deleted. It is highly 304 * suitable for deriving the EUI64 for the interface. 305 */ 306 struct ifaddr *if_hwdl; /* i: h/w identity */ 307 const uint8_t *if_broadcastaddr; 308 /* :: linklevel broadcast bytestring */ 309 struct bridge_softc 310 *if_bridge; /* i: bridge glue */ 311 struct bridge_iflist 312 *if_bridgeif; /* i: shortcut to interface list entry */ 313 int if_dlt; /* :: data link type (<net/dlt.h>) */ 314 pfil_head_t * if_pfil; /* :: filtering point */ 315 uint64_t if_capabilities; 316 /* i: interface capabilities */ 317 uint64_t if_capenable; /* i: capabilities enabled */ 318 union { 319 void * carp_s; /* carp structure (used by !carp ifs) */ 320 struct ifnet *carp_d;/* ptr to carpdev (used by carp ifs) */ 321 } if_carp_ptr; /* ?: */ 322 #define if_carp if_carp_ptr.carp_s 323 #define if_carpdev if_carp_ptr.carp_d 324 /* 325 * These are pre-computed based on an interfaces enabled 326 * capabilities, for speed elsewhere. 327 */ 328 int if_csum_flags_tx; 329 /* i: M_CSUM_* flags for Tx */ 330 int if_csum_flags_rx; 331 /* i: M_CSUM_* flags for Rx */ 332 333 void *if_afdata[AF_MAX]; 334 /* a: */ 335 struct mowner *if_mowner; /* ?: who owns mbufs for this interface */ 336 337 void *if_agrprivate; /* ?: used only when #if NAGR > 0 */ 338 339 /* 340 * pf specific data, used only when #if NPF > 0. 341 */ 342 void *if_pf_kif; /* ?: pf interface abstraction */ 343 void *if_pf_groups; /* ?: pf interface groups */ 344 /* 345 * During an ifnet's lifetime, it has only one if_index, but 346 * and if_index is not sufficient to identify an ifnet 347 * because during the lifetime of the system, many ifnets may occupy a 348 * given if_index. Let us tell different ifnets at the same 349 * if_index apart by their if_index_gen, a unique number that each ifnet 350 * is assigned when it if_attach()s. Now, the kernel can use the 351 * pair (if_index, if_index_gen) as a weak reference to an ifnet. 352 */ 353 uint64_t if_index_gen; /* :: generation number for the ifnet 354 * at if_index: if two ifnets' index 355 * and generation number are both the 356 * same, they are the same ifnet. 357 */ 358 struct sysctllog 359 *if_sysctl_log; /* :: */ 360 int (*if_initaddr) /* :: */ 361 (struct ifnet *, struct ifaddr *, bool); 362 int (*if_mcastop) /* :: */ 363 (struct ifnet *, const unsigned long, 364 const struct sockaddr *); 365 int (*if_setflags) /* :: */ 366 (struct ifnet *, const short); 367 kmutex_t *if_ioctl_lock; /* :: */ 368 #ifdef _KERNEL /* XXX kvm(3) */ 369 struct callout *if_slowtimo_ch;/* :: */ 370 struct krwlock *if_afdata_lock;/* :: */ 371 struct if_percpuq 372 *if_percpuq; /* :: we should remove it in the future */ 373 void *if_link_si; /* :: softint to handle link state changes */ 374 uint16_t if_link_queue; /* q: masked link state change queue */ 375 struct pslist_entry 376 if_pslist_entry;/* i: */ 377 struct psref_target 378 if_psref; /* :: */ 379 struct pslist_head 380 if_addr_pslist; /* i: */ 381 struct if_deferred_start 382 *if_deferred_start; 383 /* :: */ 384 /* XXX should be protocol independent */ 385 LIST_HEAD(, in6_multi) 386 if_multiaddrs; /* 6: */ 387 #endif 388 } ifnet_t; 389 390 #define if_mtu if_data.ifi_mtu 391 #define if_type if_data.ifi_type 392 #define if_addrlen if_data.ifi_addrlen 393 #define if_hdrlen if_data.ifi_hdrlen 394 #define if_metric if_data.ifi_metric 395 #define if_link_state if_data.ifi_link_state 396 #define if_baudrate if_data.ifi_baudrate 397 #define if_ipackets if_data.ifi_ipackets 398 #define if_ierrors if_data.ifi_ierrors 399 #define if_opackets if_data.ifi_opackets 400 #define if_oerrors if_data.ifi_oerrors 401 #define if_collisions if_data.ifi_collisions 402 #define if_ibytes if_data.ifi_ibytes 403 #define if_obytes if_data.ifi_obytes 404 #define if_imcasts if_data.ifi_imcasts 405 #define if_omcasts if_data.ifi_omcasts 406 #define if_iqdrops if_data.ifi_iqdrops 407 #define if_noproto if_data.ifi_noproto 408 #define if_lastchange if_data.ifi_lastchange 409 #define if_name(ifp) ((ifp)->if_xname) 410 411 #define IFF_UP 0x0001 /* interface is up */ 412 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 413 #define IFF_DEBUG 0x0004 /* turn on debugging */ 414 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 415 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 416 /* 0x0020 was IFF_NOTRAILERS */ 417 #define IFF_RUNNING 0x0040 /* resources allocated */ 418 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 419 #define IFF_PROMISC 0x0100 /* receive all packets */ 420 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 421 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 422 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 423 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 424 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 425 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 426 #define IFF_MULTICAST 0x8000 /* supports multicast */ 427 428 #define IFEF_MPSAFE __BIT(0) /* handlers can run in parallel (see below) */ 429 #define IFEF_NO_LINK_STATE_CHANGE __BIT(1) /* doesn't use link state interrupts */ 430 431 /* 432 * The guidelines for converting an interface to IFEF_MPSAFE are as follows 433 * 434 * Enabling IFEF_MPSAFE on an interface suppresses taking KERNEL_LOCK when 435 * calling the following handlers: 436 * - if_start 437 * - Note that if_transmit is always called without KERNEL_LOCK 438 * - if_output 439 * - if_ioctl 440 * - if_init 441 * - if_stop 442 * 443 * This means that an interface with IFEF_MPSAFE must make the above handlers 444 * MP-safe or take KERNEL_LOCK by itself inside handlers that aren't MP-safe 445 * yet. 446 * 447 * There are some additional restrictions to access member variables of struct 448 * ifnet: 449 * - if_flags 450 * - Must be updated with holding IFNET_LOCK 451 * - You cannot use the flag in Tx/Rx paths anymore because there is no 452 * synchronization on the flag except for IFNET_LOCK 453 * - Note that IFNET_LOCK can't be taken in softint because it's known 454 * that it causes a deadlock 455 * - Some synchronization mechanisms such as pserialize_perform are called 456 * with IFNET_LOCK and also require context switches on every CPUs 457 * that mean softints finish so trying to take IFNET_LOCK in softint 458 * might block on IFNET_LOCK and prevent such synchronization mechanisms 459 * from being completed 460 * - Currently the deadlock occurs only if NET_MPSAFE is enabled, however, 461 * we should deal with the restriction because NET_MPSAFE will be enabled 462 * by default in the future 463 * - if_watchdog and if_timer 464 * - The watchdog framework works only for non-IFEF_MPSAFE interfaces 465 * that rely on KERNEL_LOCK 466 * - Interfaces with IFEF_MPSAFE have to provide its own watchdog mechanism 467 * if needed 468 * - Keep if_watchdog NULL when calling if_attach 469 */ 470 471 #ifdef _KERNEL 472 static __inline bool 473 if_is_mpsafe(struct ifnet *ifp) 474 { 475 476 return ((ifp->if_extflags & IFEF_MPSAFE) != 0); 477 } 478 479 static __inline int 480 if_output_lock(struct ifnet *cifp, struct ifnet *ifp, struct mbuf *m, 481 const struct sockaddr *dst, const struct rtentry *rt) 482 { 483 484 if (if_is_mpsafe(cifp)) { 485 return (*cifp->if_output)(ifp, m, dst, rt); 486 } else { 487 int ret; 488 489 KERNEL_LOCK(1, NULL); 490 ret = (*cifp->if_output)(ifp, m, dst, rt); 491 KERNEL_UNLOCK_ONE(NULL); 492 return ret; 493 } 494 } 495 496 static __inline void 497 if_start_lock(struct ifnet *ifp) 498 { 499 500 if (if_is_mpsafe(ifp)) { 501 (*ifp->if_start)(ifp); 502 } else { 503 KERNEL_LOCK(1, NULL); 504 (*ifp->if_start)(ifp); 505 KERNEL_UNLOCK_ONE(NULL); 506 } 507 } 508 509 static __inline bool 510 if_is_link_state_changeable(struct ifnet *ifp) 511 { 512 513 return ((ifp->if_extflags & IFEF_NO_LINK_STATE_CHANGE) == 0); 514 } 515 516 #define KERNEL_LOCK_IF_IFP_MPSAFE(ifp) \ 517 do { if (if_is_mpsafe(ifp)) { KERNEL_LOCK(1, NULL); } } while (0) 518 #define KERNEL_UNLOCK_IF_IFP_MPSAFE(ifp) \ 519 do { if (if_is_mpsafe(ifp)) { KERNEL_UNLOCK_ONE(NULL); } } while (0) 520 521 #define KERNEL_LOCK_UNLESS_IFP_MPSAFE(ifp) \ 522 do { if (!if_is_mpsafe(ifp)) { KERNEL_LOCK(1, NULL); } } while (0) 523 #define KERNEL_UNLOCK_UNLESS_IFP_MPSAFE(ifp) \ 524 do { if (!if_is_mpsafe(ifp)) { KERNEL_UNLOCK_ONE(NULL); } } while (0) 525 526 #ifdef _KERNEL_OPT 527 #include "opt_net_mpsafe.h" 528 #endif 529 530 /* XXX explore a better place to define */ 531 #ifdef NET_MPSAFE 532 533 #define KERNEL_LOCK_UNLESS_NET_MPSAFE() do { } while (0) 534 #define KERNEL_UNLOCK_UNLESS_NET_MPSAFE() do { } while (0) 535 536 #define SOFTNET_LOCK_UNLESS_NET_MPSAFE() do { } while (0) 537 #define SOFTNET_UNLOCK_UNLESS_NET_MPSAFE() do { } while (0) 538 539 #define SOFTNET_LOCK_IF_NET_MPSAFE() \ 540 do { mutex_enter(softnet_lock); } while (0) 541 #define SOFTNET_UNLOCK_IF_NET_MPSAFE() \ 542 do { mutex_exit(softnet_lock); } while (0) 543 544 #else /* NET_MPSAFE */ 545 546 #define KERNEL_LOCK_UNLESS_NET_MPSAFE() \ 547 do { KERNEL_LOCK(1, NULL); } while (0) 548 #define KERNEL_UNLOCK_UNLESS_NET_MPSAFE() \ 549 do { KERNEL_UNLOCK_ONE(NULL); } while (0) 550 551 #define SOFTNET_LOCK_UNLESS_NET_MPSAFE() \ 552 do { mutex_enter(softnet_lock); } while (0) 553 #define SOFTNET_UNLOCK_UNLESS_NET_MPSAFE() \ 554 do { mutex_exit(softnet_lock); } while (0) 555 556 #define SOFTNET_LOCK_IF_NET_MPSAFE() do { } while (0) 557 #define SOFTNET_UNLOCK_IF_NET_MPSAFE() do { } while (0) 558 559 #endif /* NET_MPSAFE */ 560 561 #define SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE() \ 562 do { \ 563 SOFTNET_LOCK_UNLESS_NET_MPSAFE(); \ 564 KERNEL_LOCK_UNLESS_NET_MPSAFE(); \ 565 } while (0) 566 567 #define SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE() \ 568 do { \ 569 KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); \ 570 SOFTNET_UNLOCK_UNLESS_NET_MPSAFE(); \ 571 } while (0) 572 573 #endif /* _KERNEL */ 574 575 #define IFFBITS \ 576 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT" \ 577 "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \ 578 "\15LINK0\16LINK1\17LINK2\20MULTICAST" 579 580 /* flags set internally only: */ 581 #define IFF_CANTCHANGE \ 582 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 583 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 584 585 /* 586 * Some convenience macros used for setting ifi_baudrate. 587 */ 588 #define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */ 589 #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ 590 #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */ 591 592 /* Capabilities that interfaces can advertise. */ 593 /* 0x01 .. 0x40 were previously used */ 594 #define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */ 595 #define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */ 596 #define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */ 597 #define IFCAP_CSUM_TCPv4_Rx 0x00400 /* can do IPv4/TCP checksums (Rx) */ 598 #define IFCAP_CSUM_TCPv4_Tx 0x00800 /* can do IPv4/TCP checksums (Tx) */ 599 #define IFCAP_CSUM_UDPv4_Rx 0x01000 /* can do IPv4/UDP checksums (Rx) */ 600 #define IFCAP_CSUM_UDPv4_Tx 0x02000 /* can do IPv4/UDP checksums (Tx) */ 601 #define IFCAP_CSUM_TCPv6_Rx 0x04000 /* can do IPv6/TCP checksums (Rx) */ 602 #define IFCAP_CSUM_TCPv6_Tx 0x08000 /* can do IPv6/TCP checksums (Tx) */ 603 #define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */ 604 #define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */ 605 #define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */ 606 #define IFCAP_LRO 0x80000 /* can do Large Receive Offload */ 607 #define IFCAP_MASK 0xfff80 /* currently valid capabilities */ 608 609 #define IFCAPBITS \ 610 "\020" \ 611 "\10TSO4" \ 612 "\11IP4CSUM_Rx" \ 613 "\12IP4CSUM_Tx" \ 614 "\13TCP4CSUM_Rx" \ 615 "\14TCP4CSUM_Tx" \ 616 "\15UDP4CSUM_Rx" \ 617 "\16UDP4CSUM_Tx" \ 618 "\17TCP6CSUM_Rx" \ 619 "\20TCP6CSUM_Tx" \ 620 "\21UDP6CSUM_Rx" \ 621 "\22UDP6CSUM_Tx" \ 622 "\23TSO6" \ 623 "\24LRO" \ 624 625 #define IF_AFDATA_LOCK_INIT(ifp) \ 626 do {(ifp)->if_afdata_lock = rw_obj_alloc();} while (0) 627 628 #define IF_AFDATA_LOCK_DESTROY(ifp) rw_obj_free((ifp)->if_afdata_lock) 629 630 #define IF_AFDATA_WLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_WRITER) 631 #define IF_AFDATA_RLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_READER) 632 #define IF_AFDATA_WUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 633 #define IF_AFDATA_RUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) 634 #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 635 #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 636 #define IF_AFDATA_TRYLOCK(ifp) rw_tryenter((ifp)->if_afdata_lock, RW_WRITER) 637 638 #define IF_AFDATA_LOCK_ASSERT(ifp) \ 639 KASSERT(rw_lock_held((ifp)->if_afdata_lock)) 640 #define IF_AFDATA_RLOCK_ASSERT(ifp) \ 641 KASSERT(rw_read_held((ifp)->if_afdata_lock)) 642 #define IF_AFDATA_WLOCK_ASSERT(ifp) \ 643 KASSERT(rw_write_held((ifp)->if_afdata_lock)) 644 645 /* 646 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 647 * input routines have queues of messages stored on ifqueue structures 648 * (defined above). Entries are added to and deleted from these structures 649 * by these macros, which should be called with ipl raised to splnet(). 650 */ 651 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 652 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 653 #define IF_ENQUEUE(ifq, m) do { \ 654 (m)->m_nextpkt = 0; \ 655 if ((ifq)->ifq_tail == 0) \ 656 (ifq)->ifq_head = m; \ 657 else \ 658 (ifq)->ifq_tail->m_nextpkt = m; \ 659 (ifq)->ifq_tail = m; \ 660 (ifq)->ifq_len++; \ 661 } while (/*CONSTCOND*/0) 662 #define IF_PREPEND(ifq, m) do { \ 663 (m)->m_nextpkt = (ifq)->ifq_head; \ 664 if ((ifq)->ifq_tail == 0) \ 665 (ifq)->ifq_tail = (m); \ 666 (ifq)->ifq_head = (m); \ 667 (ifq)->ifq_len++; \ 668 } while (/*CONSTCOND*/0) 669 #define IF_DEQUEUE(ifq, m) do { \ 670 (m) = (ifq)->ifq_head; \ 671 if (m) { \ 672 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 673 (ifq)->ifq_tail = 0; \ 674 (m)->m_nextpkt = 0; \ 675 (ifq)->ifq_len--; \ 676 } \ 677 } while (/*CONSTCOND*/0) 678 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 679 #define IF_PURGE(ifq) \ 680 do { \ 681 struct mbuf *__m0; \ 682 \ 683 for (;;) { \ 684 IF_DEQUEUE((ifq), __m0); \ 685 if (__m0 == NULL) \ 686 break; \ 687 else \ 688 m_freem(__m0); \ 689 } \ 690 } while (/*CONSTCOND*/ 0) 691 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 692 693 #ifndef IFQ_MAXLEN 694 #define IFQ_MAXLEN 256 695 #endif 696 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 697 698 /* 699 * Structure defining statistics and other data kept regarding an address 700 * on a network interface. 701 */ 702 struct ifaddr_data { 703 int64_t ifad_inbytes; 704 int64_t ifad_outbytes; 705 }; 706 707 /* 708 * The ifaddr structure contains information about one address 709 * of an interface. They are maintained by the different address families, 710 * are allocated and attached when an address is set, and are linked 711 * together so all addresses for an interface can be located. 712 */ 713 struct ifaddr { 714 struct sockaddr *ifa_addr; /* address of interface */ 715 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 716 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 717 struct sockaddr *ifa_netmask; /* used to determine subnet */ 718 struct ifnet *ifa_ifp; /* back-pointer to interface */ 719 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 720 struct ifaddr_data ifa_data; /* statistics on the address */ 721 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 722 (int, struct rtentry *, const struct rt_addrinfo *); 723 u_int ifa_flags; /* mostly rt_flags for cloning */ 724 int ifa_refcnt; /* count of references */ 725 int ifa_metric; /* cost of going out this interface */ 726 struct ifaddr *(*ifa_getifa)(struct ifaddr *, 727 const struct sockaddr *); 728 uint32_t *ifa_seqno; 729 int16_t ifa_preference; /* preference level for this address */ 730 #ifdef _KERNEL 731 struct pslist_entry ifa_pslist_entry; 732 struct psref_target ifa_psref; 733 #endif 734 }; 735 #define IFA_ROUTE RTF_UP /* (0x01) route installed */ 736 #define IFA_DESTROYING 0x2 737 738 /* 739 * Message format for use in obtaining information about interfaces from 740 * sysctl and the routing socket. We need to force 64-bit alignment if we 741 * aren't using compatiblity definitons. 742 */ 743 #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK) 744 #define __align64 __aligned(sizeof(uint64_t)) 745 #else 746 #define __align64 747 #endif 748 struct if_msghdr { 749 u_short ifm_msglen __align64; 750 /* to skip over non-understood messages */ 751 u_char ifm_version; /* future binary compatibility */ 752 u_char ifm_type; /* message type */ 753 int ifm_addrs; /* like rtm_addrs */ 754 int ifm_flags; /* value of if_flags */ 755 u_short ifm_index; /* index for associated ifp */ 756 struct if_data ifm_data __align64; 757 /* statistics and other data about if */ 758 }; 759 760 /* 761 * Message format for use in obtaining information about interface addresses 762 * from sysctl and the routing socket. 763 */ 764 struct ifa_msghdr { 765 u_short ifam_msglen __align64; 766 /* to skip over non-understood messages */ 767 u_char ifam_version; /* future binary compatibility */ 768 u_char ifam_type; /* message type */ 769 u_short ifam_index; /* index for associated ifp */ 770 int ifam_flags; /* value of ifa_flags */ 771 int ifam_addrs; /* like rtm_addrs */ 772 pid_t ifam_pid; /* identify sender */ 773 int ifam_addrflags; /* family specific address flags */ 774 int ifam_metric; /* value of ifa_metric */ 775 }; 776 777 /* 778 * Message format announcing the arrival or departure of a network interface. 779 */ 780 struct if_announcemsghdr { 781 u_short ifan_msglen __align64; 782 /* to skip over non-understood messages */ 783 u_char ifan_version; /* future binary compatibility */ 784 u_char ifan_type; /* message type */ 785 u_short ifan_index; /* index for associated ifp */ 786 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 787 u_short ifan_what; /* what type of announcement */ 788 }; 789 790 #define IFAN_ARRIVAL 0 /* interface arrival */ 791 #define IFAN_DEPARTURE 1 /* interface departure */ 792 793 #undef __align64 794 795 /* 796 * Interface request structure used for socket 797 * ioctl's. All interface ioctl's must have parameter 798 * definitions which begin with ifr_name. The 799 * remainder may be interface specific. 800 */ 801 struct ifreq { 802 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 803 union { 804 struct sockaddr ifru_addr; 805 struct sockaddr ifru_dstaddr; 806 struct sockaddr ifru_broadaddr; 807 struct sockaddr_storage ifru_space; 808 short ifru_flags; 809 int ifru_addrflags; 810 int ifru_metric; 811 int ifru_mtu; 812 int ifru_dlt; 813 u_int ifru_value; 814 void * ifru_data; 815 struct { 816 uint32_t b_buflen; 817 void *b_buf; 818 } ifru_b; 819 } ifr_ifru; 820 #define ifr_addr ifr_ifru.ifru_addr /* address */ 821 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 822 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 823 #define ifr_space ifr_ifru.ifru_space /* sockaddr_storage */ 824 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 825 #define ifr_addrflags ifr_ifru.ifru_addrflags /* addr flags */ 826 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 827 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 828 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 829 #define ifr_value ifr_ifru.ifru_value /* generic value */ 830 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 831 #define ifr_data ifr_ifru.ifru_data /* for use by interface 832 * XXX deprecated 833 */ 834 #define ifr_buf ifr_ifru.ifru_b.b_buf /* new interface ioctls */ 835 #define ifr_buflen ifr_ifru.ifru_b.b_buflen 836 #define ifr_index ifr_ifru.ifru_value /* interface index, BSD */ 837 #define ifr_ifindex ifr_index /* interface index, linux */ 838 }; 839 840 #ifdef _KERNEL 841 #define ifreq_setdstaddr ifreq_setaddr 842 #define ifreq_setbroadaddr ifreq_setaddr 843 #define ifreq_getdstaddr ifreq_getaddr 844 #define ifreq_getbroadaddr ifreq_getaddr 845 846 static __inline const struct sockaddr * 847 /*ARGSUSED*/ 848 ifreq_getaddr(u_long cmd, const struct ifreq *ifr) 849 { 850 return &ifr->ifr_addr; 851 } 852 #endif /* _KERNEL */ 853 854 struct ifcapreq { 855 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 856 uint64_t ifcr_capabilities; /* supported capabiliites */ 857 uint64_t ifcr_capenable; /* capabilities enabled */ 858 }; 859 860 struct ifaliasreq { 861 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 862 struct sockaddr ifra_addr; 863 struct sockaddr ifra_dstaddr; 864 #define ifra_broadaddr ifra_dstaddr 865 struct sockaddr ifra_mask; 866 }; 867 868 struct ifdatareq { 869 char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 870 struct if_data ifdr_data; 871 }; 872 873 struct ifmediareq { 874 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 875 int ifm_current; /* IFMWD: current media options */ 876 int ifm_mask; /* IFMWD: don't care mask */ 877 int ifm_status; /* media status */ 878 int ifm_active; /* IFMWD: active options */ 879 int ifm_count; /* # entries in ifm_ulist 880 array */ 881 int *ifm_ulist; /* array of ifmedia word */ 882 }; 883 884 885 struct ifdrv { 886 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 887 unsigned long ifd_cmd; 888 size_t ifd_len; 889 void *ifd_data; 890 }; 891 #define IFLINKSTR_QUERYLEN 0x01 892 #define IFLINKSTR_UNSET 0x02 893 894 /* 895 * Structure used in SIOCGIFCONF request. 896 * Used to retrieve interface configuration 897 * for machine (useful for programs which 898 * must know all networks accessible). 899 */ 900 struct ifconf { 901 int ifc_len; /* size of associated buffer */ 902 union { 903 void * ifcu_buf; 904 struct ifreq *ifcu_req; 905 } ifc_ifcu; 906 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 907 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 908 }; 909 910 /* 911 * Structure for SIOC[AGD]LIFADDR 912 */ 913 struct if_laddrreq { 914 char iflr_name[IFNAMSIZ]; 915 unsigned int flags; 916 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 917 #define IFLR_ACTIVE 0x4000 /* in/out: link-layer address activation */ 918 #define IFLR_FACTORY 0x2000 /* in/out: factory link-layer address */ 919 unsigned int prefixlen; /* in/out */ 920 struct sockaddr_storage addr; /* in/out */ 921 struct sockaddr_storage dstaddr; /* out */ 922 }; 923 924 /* 925 * Structure for SIOC[SG]IFADDRPREF 926 */ 927 struct if_addrprefreq { 928 char ifap_name[IFNAMSIZ]; 929 int16_t ifap_preference; /* in/out */ 930 struct sockaddr_storage ifap_addr; /* in/out */ 931 }; 932 933 #include <net/if_arp.h> 934 935 #endif /* _NETBSD_SOURCE */ 936 937 #ifdef _KERNEL 938 #ifdef ALTQ 939 #define IFQ_ENQUEUE(ifq, m, err) \ 940 do { \ 941 mutex_enter((ifq)->ifq_lock); \ 942 if (ALTQ_IS_ENABLED((ifq))) \ 943 ALTQ_ENQUEUE((ifq), (m), (err)); \ 944 else { \ 945 if (IF_QFULL((ifq))) { \ 946 m_freem((m)); \ 947 (err) = ENOBUFS; \ 948 } else { \ 949 IF_ENQUEUE((ifq), (m)); \ 950 (err) = 0; \ 951 } \ 952 } \ 953 if ((err)) \ 954 (ifq)->ifq_drops++; \ 955 mutex_exit((ifq)->ifq_lock); \ 956 } while (/*CONSTCOND*/ 0) 957 958 #define IFQ_DEQUEUE(ifq, m) \ 959 do { \ 960 mutex_enter((ifq)->ifq_lock); \ 961 if (TBR_IS_ENABLED((ifq))) \ 962 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 963 else if (ALTQ_IS_ENABLED((ifq))) \ 964 ALTQ_DEQUEUE((ifq), (m)); \ 965 else \ 966 IF_DEQUEUE((ifq), (m)); \ 967 mutex_exit((ifq)->ifq_lock); \ 968 } while (/*CONSTCOND*/ 0) 969 970 #define IFQ_POLL(ifq, m) \ 971 do { \ 972 mutex_enter((ifq)->ifq_lock); \ 973 if (TBR_IS_ENABLED((ifq))) \ 974 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 975 else if (ALTQ_IS_ENABLED((ifq))) \ 976 ALTQ_POLL((ifq), (m)); \ 977 else \ 978 IF_POLL((ifq), (m)); \ 979 mutex_exit((ifq)->ifq_lock); \ 980 } while (/*CONSTCOND*/ 0) 981 982 #define IFQ_PURGE(ifq) \ 983 do { \ 984 mutex_enter((ifq)->ifq_lock); \ 985 if (ALTQ_IS_ENABLED((ifq))) \ 986 ALTQ_PURGE((ifq)); \ 987 else \ 988 IF_PURGE((ifq)); \ 989 mutex_exit((ifq)->ifq_lock); \ 990 } while (/*CONSTCOND*/ 0) 991 992 #define IFQ_SET_READY(ifq) \ 993 do { \ 994 (ifq)->altq_flags |= ALTQF_READY; \ 995 } while (/*CONSTCOND*/ 0) 996 997 #define IFQ_CLASSIFY(ifq, m, af) \ 998 do { \ 999 KASSERT(((m)->m_flags & M_PKTHDR) != 0); \ 1000 mutex_enter((ifq)->ifq_lock); \ 1001 if (ALTQ_IS_ENABLED((ifq))) { \ 1002 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 1003 (m)->m_pkthdr.pattr_class = (*(ifq)->altq_classify) \ 1004 ((ifq)->altq_clfier, (m), (af)); \ 1005 (m)->m_pkthdr.pattr_af = (af); \ 1006 (m)->m_pkthdr.pattr_hdr = mtod((m), void *); \ 1007 } \ 1008 mutex_exit((ifq)->ifq_lock); \ 1009 } while (/*CONSTCOND*/ 0) 1010 #else /* ! ALTQ */ 1011 #define IFQ_ENQUEUE(ifq, m, err) \ 1012 do { \ 1013 mutex_enter((ifq)->ifq_lock); \ 1014 if (IF_QFULL((ifq))) { \ 1015 m_freem((m)); \ 1016 (err) = ENOBUFS; \ 1017 } else { \ 1018 IF_ENQUEUE((ifq), (m)); \ 1019 (err) = 0; \ 1020 } \ 1021 if ((err)) \ 1022 (ifq)->ifq_drops++; \ 1023 mutex_exit((ifq)->ifq_lock); \ 1024 } while (/*CONSTCOND*/ 0) 1025 1026 #define IFQ_DEQUEUE(ifq, m) \ 1027 do { \ 1028 mutex_enter((ifq)->ifq_lock); \ 1029 IF_DEQUEUE((ifq), (m)); \ 1030 mutex_exit((ifq)->ifq_lock); \ 1031 } while (/*CONSTCOND*/ 0) 1032 1033 #define IFQ_POLL(ifq, m) \ 1034 do { \ 1035 mutex_enter((ifq)->ifq_lock); \ 1036 IF_POLL((ifq), (m)); \ 1037 mutex_exit((ifq)->ifq_lock); \ 1038 } while (/*CONSTCOND*/ 0) 1039 1040 #define IFQ_PURGE(ifq) \ 1041 do { \ 1042 mutex_enter((ifq)->ifq_lock); \ 1043 IF_PURGE((ifq)); \ 1044 mutex_exit((ifq)->ifq_lock); \ 1045 } while (/*CONSTCOND*/ 0) 1046 1047 #define IFQ_SET_READY(ifq) /* nothing */ 1048 1049 #define IFQ_CLASSIFY(ifq, m, af) /* nothing */ 1050 1051 #endif /* ALTQ */ 1052 1053 #define IFQ_LOCK_INIT(ifq) (ifq)->ifq_lock = \ 1054 mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET) 1055 #define IFQ_LOCK_DESTROY(ifq) mutex_obj_free((ifq)->ifq_lock) 1056 #define IFQ_LOCK(ifq) mutex_enter((ifq)->ifq_lock) 1057 #define IFQ_UNLOCK(ifq) mutex_exit((ifq)->ifq_lock) 1058 1059 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 1060 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 1061 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 1062 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 1063 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 1064 1065 #include <sys/mallocvar.h> 1066 MALLOC_DECLARE(M_IFADDR); 1067 MALLOC_DECLARE(M_IFMADDR); 1068 1069 int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *); 1070 1071 struct ifnet *if_alloc(u_char); 1072 void if_free(struct ifnet *); 1073 void if_initname(struct ifnet *, const char *, int); 1074 struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **); 1075 void if_activate_sadl(struct ifnet *, struct ifaddr *, 1076 const struct sockaddr_dl *); 1077 void if_set_sadl(struct ifnet *, const void *, u_char, bool); 1078 void if_alloc_sadl(struct ifnet *); 1079 void if_free_sadl(struct ifnet *, int); 1080 int if_initialize(struct ifnet *); 1081 void if_register(struct ifnet *); 1082 int if_attach(struct ifnet *); /* Deprecated. Use if_initialize and if_register */ 1083 void if_attachdomain(void); 1084 void if_deactivate(struct ifnet *); 1085 bool if_is_deactivated(const struct ifnet *); 1086 void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *)); 1087 void if_detach(struct ifnet *); 1088 void if_down(struct ifnet *); 1089 void if_down_locked(struct ifnet *); 1090 void if_link_state_change(struct ifnet *, int); 1091 void if_link_state_change_softint(struct ifnet *, int); 1092 void if_up(struct ifnet *); 1093 void ifinit(void); 1094 void ifinit1(void); 1095 void ifinit_post(void); 1096 int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *); 1097 extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *); 1098 int ifioctl_common(struct ifnet *, u_long, void *); 1099 int ifpromisc(struct ifnet *, int); 1100 int ifpromisc_locked(struct ifnet *, int); 1101 int if_addr_init(ifnet_t *, struct ifaddr *, bool); 1102 int if_do_dad(struct ifnet *); 1103 int if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *); 1104 int if_flags_set(struct ifnet *, const short); 1105 int if_clone_list(int, char *, int *); 1106 1107 struct ifnet *ifunit(const char *); 1108 struct ifnet *if_get(const char *, struct psref *); 1109 ifnet_t *if_byindex(u_int); 1110 ifnet_t *_if_byindex(u_int); 1111 ifnet_t *if_get_byindex(u_int, struct psref *); 1112 ifnet_t *if_get_bylla(const void *, unsigned char, struct psref *); 1113 void if_put(const struct ifnet *, struct psref *); 1114 void if_acquire(struct ifnet *, struct psref *); 1115 #define if_release if_put 1116 1117 int if_tunnel_check_nesting(struct ifnet *, struct mbuf *, int); 1118 1119 static __inline if_index_t 1120 if_get_index(const struct ifnet *ifp) 1121 { 1122 1123 return ifp != NULL ? ifp->if_index : 0; 1124 } 1125 1126 bool if_held(struct ifnet *); 1127 1128 void if_input(struct ifnet *, struct mbuf *); 1129 1130 struct if_percpuq * 1131 if_percpuq_create(struct ifnet *); 1132 void if_percpuq_destroy(struct if_percpuq *); 1133 void 1134 if_percpuq_enqueue(struct if_percpuq *, struct mbuf *); 1135 1136 void if_deferred_start_init(struct ifnet *, void (*)(struct ifnet *)); 1137 void if_schedule_deferred_start(struct ifnet *); 1138 1139 void ifa_insert(struct ifnet *, struct ifaddr *); 1140 void ifa_remove(struct ifnet *, struct ifaddr *); 1141 1142 void ifa_psref_init(struct ifaddr *); 1143 void ifa_acquire(struct ifaddr *, struct psref *); 1144 void ifa_release(struct ifaddr *, struct psref *); 1145 bool ifa_held(struct ifaddr *); 1146 bool ifa_is_destroying(struct ifaddr *); 1147 1148 void ifaref(struct ifaddr *); 1149 void ifafree(struct ifaddr *); 1150 1151 struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); 1152 struct ifaddr *ifa_ifwithaddr_psref(const struct sockaddr *, struct psref *); 1153 struct ifaddr *ifa_ifwithaf(int); 1154 struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *); 1155 struct ifaddr *ifa_ifwithdstaddr_psref(const struct sockaddr *, 1156 struct psref *); 1157 struct ifaddr *ifa_ifwithnet(const struct sockaddr *); 1158 struct ifaddr *ifa_ifwithnet_psref(const struct sockaddr *, struct psref *); 1159 struct ifaddr *ifa_ifwithladdr(const struct sockaddr *); 1160 struct ifaddr *ifa_ifwithladdr_psref(const struct sockaddr *, struct psref *); 1161 struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); 1162 struct ifaddr *ifaof_ifpforaddr_psref(const struct sockaddr *, struct ifnet *, 1163 struct psref *); 1164 void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 1165 void p2p_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); 1166 1167 void if_clone_attach(struct if_clone *); 1168 void if_clone_detach(struct if_clone *); 1169 1170 int if_transmit_lock(struct ifnet *, struct mbuf *); 1171 1172 int ifq_enqueue(struct ifnet *, struct mbuf *); 1173 int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf *); 1174 1175 int loioctl(struct ifnet *, u_long, void *); 1176 void loopattach(int); 1177 void loopinit(void); 1178 int looutput(struct ifnet *, 1179 struct mbuf *, const struct sockaddr *, const struct rtentry *); 1180 1181 /* 1182 * These are exported because they're an easy way to tell if 1183 * an interface is going away without having to burn a flag. 1184 */ 1185 int if_nulloutput(struct ifnet *, struct mbuf *, 1186 const struct sockaddr *, const struct rtentry *); 1187 void if_nullinput(struct ifnet *, struct mbuf *); 1188 void if_nullstart(struct ifnet *); 1189 int if_nulltransmit(struct ifnet *, struct mbuf *); 1190 int if_nullioctl(struct ifnet *, u_long, void *); 1191 int if_nullinit(struct ifnet *); 1192 void if_nullstop(struct ifnet *, int); 1193 void if_nullslowtimo(struct ifnet *); 1194 #define if_nullwatchdog if_nullslowtimo 1195 void if_nulldrain(struct ifnet *); 1196 #else 1197 struct if_nameindex { 1198 unsigned int if_index; /* 1, 2, ... */ 1199 char *if_name; /* null terminated name: "le0", ... */ 1200 }; 1201 1202 #include <sys/cdefs.h> 1203 __BEGIN_DECLS 1204 unsigned int if_nametoindex(const char *); 1205 char * if_indextoname(unsigned int, char *); 1206 struct if_nameindex * if_nameindex(void); 1207 void if_freenameindex(struct if_nameindex *); 1208 __END_DECLS 1209 #endif /* _KERNEL */ /* XXX really ALTQ? */ 1210 1211 #ifdef _KERNEL 1212 1213 #define IFADDR_FIRST(__ifp) TAILQ_FIRST(&(__ifp)->if_addrlist) 1214 #define IFADDR_NEXT(__ifa) TAILQ_NEXT((__ifa), ifa_list) 1215 #define IFADDR_FOREACH(__ifa, __ifp) TAILQ_FOREACH(__ifa, \ 1216 &(__ifp)->if_addrlist, ifa_list) 1217 #define IFADDR_FOREACH_SAFE(__ifa, __ifp, __nifa) \ 1218 TAILQ_FOREACH_SAFE(__ifa, \ 1219 &(__ifp)->if_addrlist, ifa_list, __nifa) 1220 #define IFADDR_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist) 1221 1222 #define IFADDR_ENTRY_INIT(__ifa) \ 1223 PSLIST_ENTRY_INIT((__ifa), ifa_pslist_entry) 1224 #define IFADDR_ENTRY_DESTROY(__ifa) \ 1225 PSLIST_ENTRY_DESTROY((__ifa), ifa_pslist_entry) 1226 #define IFADDR_READER_EMPTY(__ifp) \ 1227 (PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1228 ifa_pslist_entry) == NULL) 1229 #define IFADDR_READER_FIRST(__ifp) \ 1230 PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1231 ifa_pslist_entry) 1232 #define IFADDR_READER_NEXT(__ifa) \ 1233 PSLIST_READER_NEXT((__ifa), struct ifaddr, ifa_pslist_entry) 1234 #define IFADDR_READER_FOREACH(__ifa, __ifp) \ 1235 PSLIST_READER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ 1236 ifa_pslist_entry) 1237 #define IFADDR_WRITER_INSERT_HEAD(__ifp, __ifa) \ 1238 PSLIST_WRITER_INSERT_HEAD(&(__ifp)->if_addr_pslist, (__ifa), \ 1239 ifa_pslist_entry) 1240 #define IFADDR_WRITER_REMOVE(__ifa) \ 1241 PSLIST_WRITER_REMOVE((__ifa), ifa_pslist_entry) 1242 #define IFADDR_WRITER_FOREACH(__ifa, __ifp) \ 1243 PSLIST_WRITER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ 1244 ifa_pslist_entry) 1245 #define IFADDR_WRITER_NEXT(__ifp) \ 1246 PSLIST_WRITER_NEXT((__ifp), struct ifaddr, ifa_pslist_entry) 1247 #define IFADDR_WRITER_INSERT_AFTER(__ifp, __new) \ 1248 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), ifa_pslist_entry) 1249 #define IFADDR_WRITER_EMPTY(__ifp) \ 1250 (PSLIST_WRITER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ 1251 ifa_pslist_entry) == NULL) 1252 #define IFADDR_WRITER_INSERT_TAIL(__ifp, __new) \ 1253 do { \ 1254 if (IFADDR_WRITER_EMPTY((__ifp))) { \ 1255 IFADDR_WRITER_INSERT_HEAD((__ifp), (__new)); \ 1256 } else { \ 1257 struct ifaddr *__ifa; \ 1258 IFADDR_WRITER_FOREACH(__ifa, (__ifp)) { \ 1259 if (IFADDR_WRITER_NEXT(__ifa) == NULL) {\ 1260 IFADDR_WRITER_INSERT_AFTER(__ifa,\ 1261 (__new)); \ 1262 break; \ 1263 } \ 1264 } \ 1265 } \ 1266 } while (0) 1267 1268 #define IFNET_GLOBAL_LOCK() mutex_enter(&ifnet_mtx) 1269 #define IFNET_GLOBAL_UNLOCK() mutex_exit(&ifnet_mtx) 1270 #define IFNET_GLOBAL_LOCKED() mutex_owned(&ifnet_mtx) 1271 1272 #define IFNET_READER_EMPTY() \ 1273 (PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1274 #define IFNET_READER_FIRST() \ 1275 PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) 1276 #define IFNET_READER_NEXT(__ifp) \ 1277 PSLIST_READER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1278 #define IFNET_READER_FOREACH(__ifp) \ 1279 PSLIST_READER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1280 if_pslist_entry) 1281 #define IFNET_WRITER_INSERT_HEAD(__ifp) \ 1282 PSLIST_WRITER_INSERT_HEAD(&ifnet_pslist, (__ifp), if_pslist_entry) 1283 #define IFNET_WRITER_REMOVE(__ifp) \ 1284 PSLIST_WRITER_REMOVE((__ifp), if_pslist_entry) 1285 #define IFNET_WRITER_FOREACH(__ifp) \ 1286 PSLIST_WRITER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ 1287 if_pslist_entry) 1288 #define IFNET_WRITER_NEXT(__ifp) \ 1289 PSLIST_WRITER_NEXT((__ifp), struct ifnet, if_pslist_entry) 1290 #define IFNET_WRITER_INSERT_AFTER(__ifp, __new) \ 1291 PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), if_pslist_entry) 1292 #define IFNET_WRITER_EMPTY() \ 1293 (PSLIST_WRITER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) 1294 #define IFNET_WRITER_INSERT_TAIL(__new) \ 1295 do { \ 1296 if (IFNET_WRITER_EMPTY()) { \ 1297 IFNET_WRITER_INSERT_HEAD((__new)); \ 1298 } else { \ 1299 struct ifnet *__ifp; \ 1300 IFNET_WRITER_FOREACH(__ifp) { \ 1301 if (IFNET_WRITER_NEXT(__ifp) == NULL) { \ 1302 IFNET_WRITER_INSERT_AFTER(__ifp,\ 1303 (__new)); \ 1304 break; \ 1305 } \ 1306 } \ 1307 } \ 1308 } while (0) 1309 1310 #define IFNET_LOCK(ifp) mutex_enter((ifp)->if_ioctl_lock) 1311 #define IFNET_UNLOCK(ifp) mutex_exit((ifp)->if_ioctl_lock) 1312 #define IFNET_LOCKED(ifp) mutex_owned((ifp)->if_ioctl_lock) 1313 1314 #define IFNET_ASSERT_UNLOCKED(ifp) \ 1315 KDASSERT(mutex_ownable((ifp)->if_ioctl_lock)) 1316 1317 extern struct pslist_head ifnet_pslist; 1318 extern kmutex_t ifnet_mtx; 1319 1320 extern struct ifnet *lo0ifp; 1321 1322 /* 1323 * ifq sysctl support 1324 */ 1325 int sysctl_ifq(int *name, u_int namelen, void *oldp, 1326 size_t *oldlenp, void *newp, size_t newlen, 1327 struct ifqueue *ifq); 1328 /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 1329 #define IFQCTL_LEN 1 1330 #define IFQCTL_MAXLEN 2 1331 #define IFQCTL_PEAK 3 1332 #define IFQCTL_DROPS 4 1333 1334 /* 1335 * Hook for if_vlan - needed by if_agr 1336 */ 1337 MODULE_HOOK(if_vlan_vlan_input_hook, void, (struct ifnet *, struct mbuf *)); 1338 1339 #endif /* _KERNEL */ 1340 1341 #endif /* !_NET_IF_H_ */ 1342
Indexes created Fri Sep 26 08:10:20 GMT 2025