if_var.h revision 231157
1139823Simp/*- 221259Swollman * Copyright (c) 1982, 1986, 1989, 1993 321259Swollman * The Regents of the University of California. All rights reserved. 421259Swollman * 521259Swollman * Redistribution and use in source and binary forms, with or without 621259Swollman * modification, are permitted provided that the following conditions 721259Swollman * are met: 821259Swollman * 1. Redistributions of source code must retain the above copyright 921259Swollman * notice, this list of conditions and the following disclaimer. 1021259Swollman * 2. Redistributions in binary form must reproduce the above copyright 1121259Swollman * notice, this list of conditions and the following disclaimer in the 1221259Swollman * documentation and/or other materials provided with the distribution. 1321259Swollman * 4. Neither the name of the University nor the names of its contributors 1421259Swollman * may be used to endorse or promote products derived from this software 1521259Swollman * without specific prior written permission. 1621259Swollman * 1721259Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1821259Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1921259Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2021259Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2121259Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2221259Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2321259Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2421259Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2521259Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2621259Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2721259Swollman * SUCH DAMAGE. 2821259Swollman * 2921259Swollman * From: @(#)if.h 8.1 (Berkeley) 6/10/93 3050477Speter * $FreeBSD: stable/9/sys/net/if_var.h 231157 2012-02-07 19:55:58Z jhb $ 3121259Swollman */ 3221259Swollman 3321259Swollman#ifndef _NET_IF_VAR_H_ 3421259Swollman#define _NET_IF_VAR_H_ 3521259Swollman 3621259Swollman/* 3721259Swollman * Structures defining a network interface, providing a packet 3821259Swollman * transport mechanism (ala level 0 of the PUP protocols). 3921259Swollman * 4021259Swollman * Each interface accepts output datagrams of a specified maximum 4121259Swollman * length, and provides higher level routines with input datagrams 4221259Swollman * received from its medium. 4321259Swollman * 4421259Swollman * Output occurs when the routine if_output is called, with three parameters: 4521259Swollman * (*ifp->if_output)(ifp, m, dst, rt) 4621259Swollman * Here m is the mbuf chain to be sent and dst is the destination address. 4721259Swollman * The output routine encapsulates the supplied datagram if necessary, 4821259Swollman * and then transmits it on its medium. 4921259Swollman * 5021259Swollman * On input, each interface unwraps the data received by it, and either 51108533Sschweikh * places it on the input queue of an internetwork datagram routine 5221259Swollman * and posts the associated software interrupt, or passes the datagram to a raw 5321259Swollman * packet input routine. 5421259Swollman * 5521259Swollman * Routines exist for locating interfaces by their addresses 56108533Sschweikh * or for locating an interface on a certain network, as well as more general 5721259Swollman * routing and gateway routines maintaining information used to locate 5821259Swollman * interfaces. These routines live in the files if.c and route.c 5921259Swollman */ 6021259Swollman 6121259Swollman#ifdef __STDC__ 6221259Swollman/* 6321259Swollman * Forward structure declarations for function prototypes [sic]. 6421259Swollman */ 6521259Swollmanstruct mbuf; 6683366Sjulianstruct thread; 6721259Swollmanstruct rtentry; 6885074Srustruct rt_addrinfo; 6921259Swollmanstruct socket; 7021259Swollmanstruct ether_header; 71142215Sglebiusstruct carp_if; 72155051Sglebiusstruct ifvlantrunk; 73191148Skmacystruct route; 74193731Szecstruct vnet; 7521259Swollman#endif 7621259Swollman 7721259Swollman#include <sys/queue.h> /* get TAILQ macros */ 7821259Swollman 7969224Sjlemon#ifdef _KERNEL 8069152Sjlemon#include <sys/mbuf.h> 81126264Smlaier#include <sys/eventhandler.h> 82186207Skmacy#include <sys/buf_ring.h> 83195699Srwatson#include <net/vnet.h> 8469224Sjlemon#endif /* _KERNEL */ 8574914Sjhb#include <sys/lock.h> /* XXX */ 8674914Sjhb#include <sys/mutex.h> /* XXX */ 87186199Skmacy#include <sys/rwlock.h> /* XXX */ 88196481Srwatson#include <sys/sx.h> /* XXX */ 8983130Sjlemon#include <sys/event.h> /* XXX */ 90132712Srwatson#include <sys/_task.h> 9169152Sjlemon 92121816Sbrooks#define IF_DUNIT_NONE -1 93121816Sbrooks 94130416Smlaier#include <altq/if_altq.h> 95130416Smlaier 9660938SjakeTAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 9760938SjakeTAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 9860938SjakeTAILQ_HEAD(ifprefixhead, ifprefix); 9972084SphkTAILQ_HEAD(ifmultihead, ifmultiaddr); 100159781SmlaierTAILQ_HEAD(ifgrouphead, ifg_group); 10121259Swollman 10221259Swollman/* 10321259Swollman * Structure defining a queue for a network interface. 10421259Swollman */ 10521259Swollmanstruct ifqueue { 10621259Swollman struct mbuf *ifq_head; 10721259Swollman struct mbuf *ifq_tail; 10821259Swollman int ifq_len; 10921259Swollman int ifq_maxlen; 11021259Swollman int ifq_drops; 11169152Sjlemon struct mtx ifq_mtx; 11221259Swollman}; 11321259Swollman 11421259Swollman/* 11521259Swollman * Structure defining a network interface. 11621259Swollman * 11721259Swollman * (Would like to call this struct ``if'', but C isn't PL/1.) 11821259Swollman */ 11984380Smjacob 12021259Swollmanstruct ifnet { 12121259Swollman void *if_softc; /* pointer to driver state */ 122147256Sbrooks void *if_l2com; /* pointer to protocol bits */ 123191688Szec struct vnet *if_vnet; /* pointer to network stack instance */ 12460938Sjake TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 125121816Sbrooks char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 126121816Sbrooks const char *if_dname; /* driver name */ 127121816Sbrooks int if_dunit; /* unit or IF_DUNIT_NONE */ 128191367Srwatson u_int if_refcount; /* reference count */ 12921259Swollman struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 130128291Sluigi /* 131128291Sluigi * if_addrhead is the list of all addresses associated to 132128315Sluigi * an interface. 133128315Sluigi * Some code in the kernel assumes that first element 134128315Sluigi * of the list has type AF_LINK, and contains sockaddr_dl 135128315Sluigi * addresses which store the link-level address and the name 136128291Sluigi * of the interface. 137128315Sluigi * However, access to the AF_LINK address through this 138152315Sru * field is deprecated. Use if_addr or ifaddr_byindex() instead. 139128291Sluigi */ 14083130Sjlemon int if_pcount; /* number of promiscuous listeners */ 141142901Sglebius struct carp_if *if_carp; /* carp interface structure */ 14221259Swollman struct bpf_if *if_bpf; /* packet filter structure */ 14321259Swollman u_short if_index; /* numeric abbreviation for this if */ 144199975Sjhb short if_index_reserved; /* spare space to grow if_index */ 145155051Sglebius struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 146102052Ssobomax int if_flags; /* up/down, broadcast, etc. */ 147162070Sandre int if_capabilities; /* interface features & capabilities */ 148162070Sandre int if_capenable; /* enabled features & capabilities */ 14921259Swollman void *if_linkmib; /* link-type-specific MIB data */ 15021259Swollman size_t if_linkmiblen; /* length of above data */ 15121259Swollman struct if_data if_data; 15221404Swollman struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 15321404Swollman int if_amcount; /* number of all-multicast requests */ 15421259Swollman/* procedure handles */ 15521259Swollman int (*if_output) /* output routine (enqueue) */ 15692725Salfred (struct ifnet *, struct mbuf *, struct sockaddr *, 157191148Skmacy struct route *); 158106931Ssam void (*if_input) /* input routine (from h/w driver) */ 159106931Ssam (struct ifnet *, struct mbuf *); 16021259Swollman void (*if_start) /* initiate output routine */ 16192725Salfred (struct ifnet *); 16221259Swollman int (*if_ioctl) /* ioctl routine */ 16392725Salfred (struct ifnet *, u_long, caddr_t); 16421259Swollman void (*if_init) /* Init routine */ 16592725Salfred (void *); 16621404Swollman int (*if_resolvemulti) /* validate/resolve multicast */ 16792725Salfred (struct ifnet *, struct sockaddr **, struct sockaddr *); 168189230Srwatson void (*if_qflush) /* flush any queues */ 169189230Srwatson (struct ifnet *); 170189230Srwatson int (*if_transmit) /* initiate output routine */ 171189230Srwatson (struct ifnet *, struct mbuf *); 172193731Szec void (*if_reassign) /* reassign to vnet routine */ 173193731Szec (struct ifnet *, struct vnet *, char *); 174193731Szec struct vnet *if_home_vnet; /* where this ifnet originates from */ 175152315Sru struct ifaddr *if_addr; /* pointer to link-level address */ 176174388Skmacy void *if_llsoftc; /* link layer softc */ 177148265Srwatson int if_drv_flags; /* driver-managed status flags */ 178130416Smlaier struct ifaltq if_snd; /* output queue (includes altq) */ 179123220Simp const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 180127828Sluigi 181146986Sthompsa void *if_bridge; /* bridge glue */ 182146986Sthompsa 183122524Srwatson struct label *if_label; /* interface MAC label */ 184121161Sume 185127828Sluigi /* these are only used by IPv6 */ 186127828Sluigi struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 187121161Sume void *if_afdata[AF_MAX]; 188121470Sume int if_afdata_initialized; 189186199Skmacy struct rwlock if_afdata_lock; 190145320Sglebius struct task if_linktask; /* task for link change events */ 191148640Srwatson struct mtx if_addr_mtx; /* mutex to protect address lists */ 192186119Sqingli 193152209Sthompsa LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 194159781Smlaier TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 195159781Smlaier /* protected by if_addr_mtx */ 196159781Smlaier void *if_pf_kif; 197168793Sthompsa void *if_lagg; /* lagg glue */ 198224151Sbz char *if_description; /* interface description */ 199224151Sbz u_int if_fib; /* interface FIB */ 200223739Sbz u_char if_alloctype; /* if_type at time of allocation */ 201189230Srwatson 202189230Srwatson /* 203189230Srwatson * Spare fields are added so that we can modify sensitive data 204189230Srwatson * structures without changing the kernel binary interface, and must 205189230Srwatson * be used with care where binary compatibility is required. 206189230Srwatson */ 207223739Sbz char if_cspare[3]; 208189230Srwatson int if_ispare[4]; 209224151Sbz void *if_pspare[8]; /* 1 netmap, 7 TDB */ 21021259Swollman}; 21169152Sjlemon 21292725Salfredtypedef void if_init_f_t(void *); 21321259Swollman 214128376Sluigi/* 215128376Sluigi * XXX These aliases are terribly dangerous because they could apply 216128376Sluigi * to anything. 217128376Sluigi */ 21821259Swollman#define if_mtu if_data.ifi_mtu 21921259Swollman#define if_type if_data.ifi_type 22021259Swollman#define if_physical if_data.ifi_physical 22121259Swollman#define if_addrlen if_data.ifi_addrlen 22221259Swollman#define if_hdrlen if_data.ifi_hdrlen 22321259Swollman#define if_metric if_data.ifi_metric 224128871Sandre#define if_link_state if_data.ifi_link_state 22521259Swollman#define if_baudrate if_data.ifi_baudrate 22658698Sjlemon#define if_hwassist if_data.ifi_hwassist 22721259Swollman#define if_ipackets if_data.ifi_ipackets 22821259Swollman#define if_ierrors if_data.ifi_ierrors 22921259Swollman#define if_opackets if_data.ifi_opackets 23021259Swollman#define if_oerrors if_data.ifi_oerrors 23121259Swollman#define if_collisions if_data.ifi_collisions 23221259Swollman#define if_ibytes if_data.ifi_ibytes 23321259Swollman#define if_obytes if_data.ifi_obytes 23421259Swollman#define if_imcasts if_data.ifi_imcasts 23521259Swollman#define if_omcasts if_data.ifi_omcasts 23621259Swollman#define if_iqdrops if_data.ifi_iqdrops 23721259Swollman#define if_noproto if_data.ifi_noproto 23821259Swollman#define if_lastchange if_data.ifi_lastchange 23921259Swollman 24053541Sshin/* for compatibility with other BSDs */ 24153541Sshin#define if_addrlist if_addrhead 24253541Sshin#define if_list if_link 243160981Sbrooks#define if_name(ifp) ((ifp)->if_xname) 24453541Sshin 24521259Swollman/* 246148640Srwatson * Locks for address lists on the network interface. 247148640Srwatson */ 248148640Srwatson#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_mtx, \ 249148640Srwatson "if_addr_mtx", NULL, MTX_DEF) 250148640Srwatson#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_mtx) 251231157Sjhb#define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_mtx) 252231157Sjhb#define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) 253231157Sjhb#define IF_ADDR_RLOCK(if) mtx_lock(&(if)->if_addr_mtx) 254231157Sjhb#define IF_ADDR_RUNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) 255148640Srwatson#define IF_ADDR_LOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) 256231157Sjhb#define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) 257231157Sjhb/* XXX: Compat. */ 258231157Sjhb#define IF_ADDR_LOCK(if) IF_ADDR_WLOCK(if) 259231157Sjhb#define IF_ADDR_UNLOCK(if) IF_ADDR_WUNLOCK(if) 260148640Srwatson 261148640Srwatson/* 262195020Srwatson * Function variations on locking macros intended to be used by loadable 263195020Srwatson * kernel modules in order to divorce them from the internals of address list 264195020Srwatson * locking. 265195020Srwatson */ 266195020Srwatsonvoid if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 267195020Srwatsonvoid if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 268195020Srwatsonvoid if_maddr_rlock(struct ifnet *ifp); /* if_multiaddrs */ 269195020Srwatsonvoid if_maddr_runlock(struct ifnet *ifp); /* if_multiaddrs */ 270195020Srwatson 271195020Srwatson/* 27221259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 27321259Swollman * are queues of messages stored on ifqueue structures 27421259Swollman * (defined above). Entries are added to and deleted from these structures 27521259Swollman * by these macros, which should be called with ipl raised to splimp(). 27621259Swollman */ 27772200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 27872200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 279130416Smlaier#define IF_LOCK_ASSERT(ifq) mtx_assert(&(ifq)->ifq_mtx, MA_OWNED) 28069152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 28169152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 28269152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 28321259Swollman 28469152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 28569152Sjlemon (m)->m_nextpkt = NULL; \ 28669152Sjlemon if ((ifq)->ifq_tail == NULL) \ 28769152Sjlemon (ifq)->ifq_head = m; \ 28869152Sjlemon else \ 28969152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 29069152Sjlemon (ifq)->ifq_tail = m; \ 29169152Sjlemon (ifq)->ifq_len++; \ 29269152Sjlemon} while (0) 29369152Sjlemon 29469152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 29569152Sjlemon IF_LOCK(ifq); \ 29669152Sjlemon _IF_ENQUEUE(ifq, m); \ 29769152Sjlemon IF_UNLOCK(ifq); \ 29869152Sjlemon} while (0) 29969152Sjlemon 30069152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 30169152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 30269152Sjlemon if ((ifq)->ifq_tail == NULL) \ 30369152Sjlemon (ifq)->ifq_tail = (m); \ 30469152Sjlemon (ifq)->ifq_head = (m); \ 30569152Sjlemon (ifq)->ifq_len++; \ 30669152Sjlemon} while (0) 30769152Sjlemon 30869152Sjlemon#define IF_PREPEND(ifq, m) do { \ 30969152Sjlemon IF_LOCK(ifq); \ 31069152Sjlemon _IF_PREPEND(ifq, m); \ 31169152Sjlemon IF_UNLOCK(ifq); \ 31269152Sjlemon} while (0) 31369152Sjlemon 31469152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 31569152Sjlemon (m) = (ifq)->ifq_head; \ 31669152Sjlemon if (m) { \ 317136950Sjmg if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ 31869152Sjlemon (ifq)->ifq_tail = NULL; \ 31969152Sjlemon (m)->m_nextpkt = NULL; \ 32069152Sjlemon (ifq)->ifq_len--; \ 32169152Sjlemon } \ 32269152Sjlemon} while (0) 32369152Sjlemon 32469152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 32569152Sjlemon IF_LOCK(ifq); \ 32669152Sjlemon _IF_DEQUEUE(ifq, m); \ 32769152Sjlemon IF_UNLOCK(ifq); \ 32869152Sjlemon} while (0) 32969152Sjlemon 330229690Sglebius#define _IF_DEQUEUE_ALL(ifq, m) do { \ 331229690Sglebius (m) = (ifq)->ifq_head; \ 332229690Sglebius (ifq)->ifq_head = (ifq)->ifq_tail = NULL; \ 333229690Sglebius (ifq)->ifq_len = 0; \ 334229690Sglebius} while (0) 335229690Sglebius 336229690Sglebius#define IF_DEQUEUE_ALL(ifq, m) do { \ 337229690Sglebius IF_LOCK(ifq); \ 338229690Sglebius _IF_DEQUEUE_ALL(ifq, m); \ 339229690Sglebius IF_UNLOCK(ifq); \ 340229690Sglebius} while (0) 341229690Sglebius 342130416Smlaier#define _IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 343130416Smlaier#define IF_POLL(ifq, m) _IF_POLL(ifq, m) 344130416Smlaier 345130416Smlaier#define _IF_DRAIN(ifq) do { \ 34669152Sjlemon struct mbuf *m; \ 34769152Sjlemon for (;;) { \ 34869152Sjlemon _IF_DEQUEUE(ifq, m); \ 34969152Sjlemon if (m == NULL) \ 35069152Sjlemon break; \ 35169152Sjlemon m_freem(m); \ 35269152Sjlemon } \ 35369152Sjlemon} while (0) 35469152Sjlemon 355130416Smlaier#define IF_DRAIN(ifq) do { \ 356130416Smlaier IF_LOCK(ifq); \ 357130416Smlaier _IF_DRAIN(ifq); \ 358130416Smlaier IF_UNLOCK(ifq); \ 359130416Smlaier} while(0) 360130416Smlaier 36155205Speter#ifdef _KERNEL 362202588Sthompsa/* interface link layer address change event */ 363202588Sthompsatypedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 364202588SthompsaEVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 365126264Smlaier/* interface address change event */ 366126264Smlaiertypedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 367126264SmlaierEVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 368126264Smlaier/* new interface arrival event */ 369126264Smlaiertypedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 370126264SmlaierEVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 371126264Smlaier/* interface departure event */ 372126264Smlaiertypedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 373126264SmlaierEVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 374219819Sjeff/* Interface link state change event */ 375219819Sjefftypedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 376219819SjeffEVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 377126264Smlaier 378159781Smlaier/* 379159781Smlaier * interface groups 380159781Smlaier */ 381159781Smlaierstruct ifg_group { 382159781Smlaier char ifg_group[IFNAMSIZ]; 383159781Smlaier u_int ifg_refcnt; 384159781Smlaier void *ifg_pf_kif; 385159781Smlaier TAILQ_HEAD(, ifg_member) ifg_members; 386159781Smlaier TAILQ_ENTRY(ifg_group) ifg_next; 387159781Smlaier}; 388159781Smlaier 389159781Smlaierstruct ifg_member { 390159781Smlaier TAILQ_ENTRY(ifg_member) ifgm_next; 391159781Smlaier struct ifnet *ifgm_ifp; 392159781Smlaier}; 393159781Smlaier 394159781Smlaierstruct ifg_list { 395159781Smlaier struct ifg_group *ifgl_group; 396159781Smlaier TAILQ_ENTRY(ifg_list) ifgl_next; 397159781Smlaier}; 398159781Smlaier 399159781Smlaier/* group attach event */ 400159781Smlaiertypedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 401159781SmlaierEVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 402159781Smlaier/* group detach event */ 403159781Smlaiertypedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 404159781SmlaierEVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 405159781Smlaier/* group change event */ 406159781Smlaiertypedef void (*group_change_event_handler_t)(void *, const char *); 407159781SmlaierEVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 408159781Smlaier 409121470Sume#define IF_AFDATA_LOCK_INIT(ifp) \ 410186199Skmacy rw_init(&(ifp)->if_afdata_lock, "if_afdata") 411121470Sume 412186199Skmacy#define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 413186199Skmacy#define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 414186199Skmacy#define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 415186199Skmacy#define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 416186199Skmacy#define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 417186199Skmacy#define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 418186199Skmacy#define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 419186199Skmacy#define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 420186119Sqingli 421186199Skmacy#define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 422186199Skmacy#define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 423186199Skmacy 424137065Srwatsonint if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, 425137065Srwatson int adjust); 426130416Smlaier#define IF_HANDOFF(ifq, m, ifp) \ 427130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, 0) 428130416Smlaier#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) \ 429130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, adj) 43021259Swollman 431132712Srwatsonvoid if_start(struct ifnet *); 432132712Srwatson 433130416Smlaier#define IFQ_ENQUEUE(ifq, m, err) \ 434130416Smlaierdo { \ 435130416Smlaier IF_LOCK(ifq); \ 436130416Smlaier if (ALTQ_IS_ENABLED(ifq)) \ 437130416Smlaier ALTQ_ENQUEUE(ifq, m, NULL, err); \ 438130416Smlaier else { \ 439130416Smlaier if (_IF_QFULL(ifq)) { \ 440130416Smlaier m_freem(m); \ 441130416Smlaier (err) = ENOBUFS; \ 442130416Smlaier } else { \ 443130416Smlaier _IF_ENQUEUE(ifq, m); \ 444130416Smlaier (err) = 0; \ 445130416Smlaier } \ 446130416Smlaier } \ 447130416Smlaier if (err) \ 448130416Smlaier (ifq)->ifq_drops++; \ 449130416Smlaier IF_UNLOCK(ifq); \ 450130416Smlaier} while (0) 45121259Swollman 452130416Smlaier#define IFQ_DEQUEUE_NOLOCK(ifq, m) \ 453130416Smlaierdo { \ 454130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 455130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_REMOVE); \ 456130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 457130416Smlaier ALTQ_DEQUEUE(ifq, m); \ 458130416Smlaier else \ 459130416Smlaier _IF_DEQUEUE(ifq, m); \ 460130416Smlaier} while (0) 461130416Smlaier 462130416Smlaier#define IFQ_DEQUEUE(ifq, m) \ 463130416Smlaierdo { \ 464130416Smlaier IF_LOCK(ifq); \ 465130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 466130416Smlaier IF_UNLOCK(ifq); \ 467130416Smlaier} while (0) 468130416Smlaier 469130416Smlaier#define IFQ_POLL_NOLOCK(ifq, m) \ 470130416Smlaierdo { \ 471130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 472130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_POLL); \ 473130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 474130416Smlaier ALTQ_POLL(ifq, m); \ 475130416Smlaier else \ 476130416Smlaier _IF_POLL(ifq, m); \ 477130416Smlaier} while (0) 478130416Smlaier 479130416Smlaier#define IFQ_POLL(ifq, m) \ 480130416Smlaierdo { \ 481130416Smlaier IF_LOCK(ifq); \ 482130416Smlaier IFQ_POLL_NOLOCK(ifq, m); \ 483130416Smlaier IF_UNLOCK(ifq); \ 484130416Smlaier} while (0) 485130416Smlaier 486130416Smlaier#define IFQ_PURGE_NOLOCK(ifq) \ 487130416Smlaierdo { \ 488130416Smlaier if (ALTQ_IS_ENABLED(ifq)) { \ 489130416Smlaier ALTQ_PURGE(ifq); \ 490130416Smlaier } else \ 491130416Smlaier _IF_DRAIN(ifq); \ 492130416Smlaier} while (0) 493130416Smlaier 494130416Smlaier#define IFQ_PURGE(ifq) \ 495130416Smlaierdo { \ 496130416Smlaier IF_LOCK(ifq); \ 497130416Smlaier IFQ_PURGE_NOLOCK(ifq); \ 498130416Smlaier IF_UNLOCK(ifq); \ 499130416Smlaier} while (0) 500130416Smlaier 501130416Smlaier#define IFQ_SET_READY(ifq) \ 502130416Smlaier do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 503130416Smlaier 504130416Smlaier#define IFQ_LOCK(ifq) IF_LOCK(ifq) 505130416Smlaier#define IFQ_UNLOCK(ifq) IF_UNLOCK(ifq) 506130416Smlaier#define IFQ_LOCK_ASSERT(ifq) IF_LOCK_ASSERT(ifq) 507130416Smlaier#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 508130416Smlaier#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 509130416Smlaier#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 510130416Smlaier#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 511130416Smlaier#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 512130416Smlaier 513148886Srwatson/* 514148886Srwatson * The IFF_DRV_OACTIVE test should really occur in the device driver, not in 515148886Srwatson * the handoff logic, as that flag is locked by the device driver. 516148886Srwatson */ 517130416Smlaier#define IFQ_HANDOFF_ADJ(ifp, m, adj, err) \ 518130416Smlaierdo { \ 519130416Smlaier int len; \ 520130416Smlaier short mflags; \ 521130416Smlaier \ 522130416Smlaier len = (m)->m_pkthdr.len; \ 523130416Smlaier mflags = (m)->m_flags; \ 524130416Smlaier IFQ_ENQUEUE(&(ifp)->if_snd, m, err); \ 525130416Smlaier if ((err) == 0) { \ 526130416Smlaier (ifp)->if_obytes += len + (adj); \ 527130416Smlaier if (mflags & M_MCAST) \ 528130416Smlaier (ifp)->if_omcasts++; \ 529148886Srwatson if (((ifp)->if_drv_flags & IFF_DRV_OACTIVE) == 0) \ 530132712Srwatson if_start(ifp); \ 531130416Smlaier } \ 532130416Smlaier} while (0) 533130416Smlaier 534130416Smlaier#define IFQ_HANDOFF(ifp, m, err) \ 535130512Smlaier IFQ_HANDOFF_ADJ(ifp, m, 0, err) 536130416Smlaier 537130416Smlaier#define IFQ_DRV_DEQUEUE(ifq, m) \ 538130416Smlaierdo { \ 539130416Smlaier (m) = (ifq)->ifq_drv_head; \ 540130416Smlaier if (m) { \ 541130416Smlaier if (((ifq)->ifq_drv_head = (m)->m_nextpkt) == NULL) \ 542130416Smlaier (ifq)->ifq_drv_tail = NULL; \ 543130416Smlaier (m)->m_nextpkt = NULL; \ 544130416Smlaier (ifq)->ifq_drv_len--; \ 545130416Smlaier } else { \ 546130416Smlaier IFQ_LOCK(ifq); \ 547130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 548130416Smlaier while ((ifq)->ifq_drv_len < (ifq)->ifq_drv_maxlen) { \ 549130416Smlaier struct mbuf *m0; \ 550130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m0); \ 551130416Smlaier if (m0 == NULL) \ 552130416Smlaier break; \ 553130416Smlaier m0->m_nextpkt = NULL; \ 554130416Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 555130416Smlaier (ifq)->ifq_drv_head = m0; \ 556130416Smlaier else \ 557130416Smlaier (ifq)->ifq_drv_tail->m_nextpkt = m0; \ 558130416Smlaier (ifq)->ifq_drv_tail = m0; \ 559130416Smlaier (ifq)->ifq_drv_len++; \ 560130416Smlaier } \ 561130416Smlaier IFQ_UNLOCK(ifq); \ 562130416Smlaier } \ 563130416Smlaier} while (0) 564130416Smlaier 565130416Smlaier#define IFQ_DRV_PREPEND(ifq, m) \ 566130416Smlaierdo { \ 567130416Smlaier (m)->m_nextpkt = (ifq)->ifq_drv_head; \ 568132152Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 569132152Smlaier (ifq)->ifq_drv_tail = (m); \ 570130416Smlaier (ifq)->ifq_drv_head = (m); \ 571130416Smlaier (ifq)->ifq_drv_len++; \ 572130416Smlaier} while (0) 573130416Smlaier 574130416Smlaier#define IFQ_DRV_IS_EMPTY(ifq) \ 575130416Smlaier (((ifq)->ifq_drv_len == 0) && ((ifq)->ifq_len == 0)) 576130416Smlaier 577130416Smlaier#define IFQ_DRV_PURGE(ifq) \ 578130416Smlaierdo { \ 579132152Smlaier struct mbuf *m, *n = (ifq)->ifq_drv_head; \ 580132152Smlaier while((m = n) != NULL) { \ 581132152Smlaier n = m->m_nextpkt; \ 582130416Smlaier m_freem(m); \ 583130416Smlaier } \ 584130416Smlaier (ifq)->ifq_drv_head = (ifq)->ifq_drv_tail = NULL; \ 585130416Smlaier (ifq)->ifq_drv_len = 0; \ 586130416Smlaier IFQ_PURGE(ifq); \ 587130416Smlaier} while (0) 588130416Smlaier 589186207Skmacy#ifdef _KERNEL 590186213Skmacystatic __inline void 591186213Skmacydrbr_stats_update(struct ifnet *ifp, int len, int mflags) 592186213Skmacy{ 593193848Skmacy#ifndef NO_SLOW_STATS 594186213Skmacy ifp->if_obytes += len; 595186213Skmacy if (mflags & M_MCAST) 596186213Skmacy ifp->if_omcasts++; 597193848Skmacy#endif 598186213Skmacy} 599186213Skmacy 600186207Skmacystatic __inline int 601186213Skmacydrbr_enqueue(struct ifnet *ifp, struct buf_ring *br, struct mbuf *m) 602186207Skmacy{ 603186207Skmacy int error = 0; 604186213Skmacy int len = m->m_pkthdr.len; 605186213Skmacy int mflags = m->m_flags; 606186207Skmacy 607191033Skmacy#ifdef ALTQ 608191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 609191033Skmacy IFQ_ENQUEUE(&ifp->if_snd, m, error); 610191033Skmacy return (error); 611191033Skmacy } 612191033Skmacy#endif 613193848Skmacy if ((error = buf_ring_enqueue_bytes(br, m, len)) == ENOBUFS) { 614186207Skmacy br->br_drops++; 615186207Skmacy m_freem(m); 616186213Skmacy } else 617186213Skmacy drbr_stats_update(ifp, len, mflags); 618186213Skmacy 619186207Skmacy return (error); 620186207Skmacy} 621186207Skmacy 622186207Skmacystatic __inline void 623194518Skmacydrbr_flush(struct ifnet *ifp, struct buf_ring *br) 624186207Skmacy{ 625186207Skmacy struct mbuf *m; 626186207Skmacy 627194518Skmacy#ifdef ALTQ 628203834Smlaier if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) 629203834Smlaier IFQ_PURGE(&ifp->if_snd); 630194518Skmacy#endif 631186207Skmacy while ((m = buf_ring_dequeue_sc(br)) != NULL) 632186207Skmacy m_freem(m); 633194518Skmacy} 634186207Skmacy 635194518Skmacystatic __inline void 636194518Skmacydrbr_free(struct buf_ring *br, struct malloc_type *type) 637194518Skmacy{ 638194518Skmacy 639194518Skmacy drbr_flush(NULL, br); 640186207Skmacy buf_ring_free(br, type); 641186207Skmacy} 642191033Skmacy 643191033Skmacystatic __inline struct mbuf * 644191033Skmacydrbr_dequeue(struct ifnet *ifp, struct buf_ring *br) 645191033Skmacy{ 646191033Skmacy#ifdef ALTQ 647191033Skmacy struct mbuf *m; 648191033Skmacy 649191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 650203834Smlaier IFQ_DEQUEUE(&ifp->if_snd, m); 651191033Skmacy return (m); 652191033Skmacy } 653186207Skmacy#endif 654191033Skmacy return (buf_ring_dequeue_sc(br)); 655191033Skmacy} 656186207Skmacy 657193848Skmacystatic __inline struct mbuf * 658193848Skmacydrbr_dequeue_cond(struct ifnet *ifp, struct buf_ring *br, 659193848Skmacy int (*func) (struct mbuf *, void *), void *arg) 660193848Skmacy{ 661193848Skmacy struct mbuf *m; 662193848Skmacy#ifdef ALTQ 663203834Smlaier if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 664203834Smlaier IFQ_LOCK(&ifp->if_snd); 665203834Smlaier IFQ_POLL_NOLOCK(&ifp->if_snd, m); 666203834Smlaier if (m != NULL && func(m, arg) == 0) { 667203834Smlaier IFQ_UNLOCK(&ifp->if_snd); 668203834Smlaier return (NULL); 669203834Smlaier } 670205197Smlaier IFQ_DEQUEUE_NOLOCK(&ifp->if_snd, m); 671203834Smlaier IFQ_UNLOCK(&ifp->if_snd); 672193848Skmacy return (m); 673193848Skmacy } 674193848Skmacy#endif 675193848Skmacy m = buf_ring_peek(br); 676193848Skmacy if (m == NULL || func(m, arg) == 0) 677193848Skmacy return (NULL); 678193848Skmacy 679193848Skmacy return (buf_ring_dequeue_sc(br)); 680193848Skmacy} 681193848Skmacy 682191033Skmacystatic __inline int 683191033Skmacydrbr_empty(struct ifnet *ifp, struct buf_ring *br) 684191033Skmacy{ 685191033Skmacy#ifdef ALTQ 686191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) 687203834Smlaier return (IFQ_IS_EMPTY(&ifp->if_snd)); 688191033Skmacy#endif 689191033Skmacy return (buf_ring_empty(br)); 690191033Skmacy} 691193848Skmacy 692193848Skmacystatic __inline int 693203834Smlaierdrbr_needs_enqueue(struct ifnet *ifp, struct buf_ring *br) 694203834Smlaier{ 695203834Smlaier#ifdef ALTQ 696203834Smlaier if (ALTQ_IS_ENABLED(&ifp->if_snd)) 697203834Smlaier return (1); 698203834Smlaier#endif 699203834Smlaier return (!buf_ring_empty(br)); 700203834Smlaier} 701203834Smlaier 702203834Smlaierstatic __inline int 703193848Skmacydrbr_inuse(struct ifnet *ifp, struct buf_ring *br) 704193848Skmacy{ 705193848Skmacy#ifdef ALTQ 706193848Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) 707193848Skmacy return (ifp->if_snd.ifq_len); 708191033Skmacy#endif 709193848Skmacy return (buf_ring_count(br)); 710193848Skmacy} 711193848Skmacy#endif 71249459Sbrian/* 71349459Sbrian * 72 was chosen below because it is the size of a TCP/IP 71449459Sbrian * header (40) + the minimum mss (32). 71549459Sbrian */ 71649459Sbrian#define IF_MINMTU 72 71749459Sbrian#define IF_MAXMTU 65535 71849459Sbrian 71955205Speter#endif /* _KERNEL */ 72021259Swollman 72121259Swollman/* 72221259Swollman * The ifaddr structure contains information about one address 72321259Swollman * of an interface. They are maintained by the different address families, 72421259Swollman * are allocated and attached when an address is set, and are linked 72521259Swollman * together so all addresses for an interface can be located. 726128291Sluigi * 727128291Sluigi * NOTE: a 'struct ifaddr' is always at the beginning of a larger 728128291Sluigi * chunk of malloc'ed memory, where we store the three addresses 729128291Sluigi * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 73021259Swollman */ 73121259Swollmanstruct ifaddr { 73221259Swollman struct sockaddr *ifa_addr; /* address of interface */ 73321259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 73421259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 73521259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 73667334Sjoe struct if_data if_data; /* not all members are meaningful */ 73721259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 73860938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 73921259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 74092725Salfred (int, struct rtentry *, struct rt_addrinfo *); 74121259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 74247254Spb u_int ifa_refcnt; /* references to this structure */ 74321259Swollman int ifa_metric; /* cost of going out this interface */ 74428845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 74592725Salfred (struct ifaddr *, struct sockaddr *); 746108033Shsu struct mtx ifa_mtx; 74721259Swollman}; 74821259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 749201282Sqingli#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 75021259Swollman 75153541Sshin/* for compatibility with other BSDs */ 75253541Sshin#define ifa_list ifa_link 75353541Sshin 754194602Srwatson#ifdef _KERNEL 755108033Shsu#define IFA_LOCK(ifa) mtx_lock(&(ifa)->ifa_mtx) 756108033Shsu#define IFA_UNLOCK(ifa) mtx_unlock(&(ifa)->ifa_mtx) 757108033Shsu 758194602Srwatsonvoid ifa_free(struct ifaddr *ifa); 759194602Srwatsonvoid ifa_init(struct ifaddr *ifa); 760194602Srwatsonvoid ifa_ref(struct ifaddr *ifa); 761194602Srwatson#endif 762194602Srwatson 76321404Swollman/* 76452904Sshin * The prefix structure contains information about one prefix 76552904Sshin * of an interface. They are maintained by the different address families, 766108470Sschweikh * are allocated and attached when a prefix or an address is set, 76753541Sshin * and are linked together so all prefixes for an interface can be located. 76852904Sshin */ 76952904Sshinstruct ifprefix { 77052904Sshin struct sockaddr *ifpr_prefix; /* prefix of interface */ 77152904Sshin struct ifnet *ifpr_ifp; /* back-pointer to interface */ 77260938Sjake TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 77352904Sshin u_char ifpr_plen; /* prefix length in bits */ 77452904Sshin u_char ifpr_type; /* protocol dependent prefix type */ 77552904Sshin}; 77652904Sshin 77752904Sshin/* 77821404Swollman * Multicast address structure. This is analogous to the ifaddr 77921404Swollman * structure except that it keeps track of multicast addresses. 78021404Swollman */ 78121404Swollmanstruct ifmultiaddr { 78272084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 78321434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 78421434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 78521434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 78621434Swollman u_int ifma_refcount; /* reference count */ 78721434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 788167729Sbms struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 78921404Swollman}; 79021404Swollman 79155205Speter#ifdef _KERNEL 79221259Swollman 793196481Srwatsonextern struct rwlock ifnet_rwlock; 794196481Srwatsonextern struct sx ifnet_sxlock; 795108172Shsu 796196481Srwatson#define IFNET_LOCK_INIT() do { \ 797196481Srwatson rw_init_flags(&ifnet_rwlock, "ifnet_rw", RW_RECURSE); \ 798196481Srwatson sx_init_flags(&ifnet_sxlock, "ifnet_sx", SX_RECURSE); \ 799196481Srwatson} while(0) 800196481Srwatson 801196481Srwatson#define IFNET_WLOCK() do { \ 802196481Srwatson sx_xlock(&ifnet_sxlock); \ 803196481Srwatson rw_wlock(&ifnet_rwlock); \ 804196481Srwatson} while (0) 805196481Srwatson 806196481Srwatson#define IFNET_WUNLOCK() do { \ 807196481Srwatson rw_wunlock(&ifnet_rwlock); \ 808196481Srwatson sx_xunlock(&ifnet_sxlock); \ 809196481Srwatson} while (0) 810196481Srwatson 811191367Srwatson/* 812196481Srwatson * To assert the ifnet lock, you must know not only whether it's for read or 813196481Srwatson * write, but also whether it was acquired with sleep support or not. 814196481Srwatson */ 815196481Srwatson#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 816196481Srwatson#define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 817196481Srwatson#define IFNET_WLOCK_ASSERT() do { \ 818196481Srwatson sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 819196481Srwatson rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 820196481Srwatson} while (0) 821196481Srwatson 822196481Srwatson#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 823196481Srwatson#define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 824196481Srwatson#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 825196481Srwatson#define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 826196481Srwatson 827196481Srwatson/* 828191367Srwatson * Look up an ifnet given its index; the _ref variant also acquires a 829191367Srwatson * reference that must be freed using if_rele(). It is almost always a bug 830191367Srwatson * to call ifnet_byindex() instead if ifnet_byindex_ref(). 831191367Srwatson */ 832180042Srwatsonstruct ifnet *ifnet_byindex(u_short idx); 833191816Szecstruct ifnet *ifnet_byindex_locked(u_short idx); 834191367Srwatsonstruct ifnet *ifnet_byindex_ref(u_short idx); 835181892Skmacy 836128315Sluigi/* 837128315Sluigi * Given the index, ifaddr_byindex() returns the one and only 838128315Sluigi * link-level ifaddr for the interface. You are not supposed to use 839128315Sluigi * it to traverse the list of addresses associated to the interface. 840128315Sluigi */ 841180042Srwatsonstruct ifaddr *ifaddr_byindex(u_short idx); 84283130Sjlemon 843195699SrwatsonVNET_DECLARE(struct ifnethead, ifnet); 844195699SrwatsonVNET_DECLARE(struct ifgrouphead, ifg_head); 845195699SrwatsonVNET_DECLARE(int, if_index); 846195699SrwatsonVNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 847195914SqingliVNET_DECLARE(int, useloopback); 848195699Srwatson 849195727Srwatson#define V_ifnet VNET(ifnet) 850195727Srwatson#define V_ifg_head VNET(ifg_head) 851195727Srwatson#define V_if_index VNET(if_index) 852195727Srwatson#define V_loif VNET(loif) 853195914Sqingli#define V_useloopback VNET(useloopback) 854195699Srwatson 855186048Sbzextern int ifqmaxlen; 85621259Swollman 857159781Smlaierint if_addgroup(struct ifnet *, const char *); 858159781Smlaierint if_delgroup(struct ifnet *, const char *); 85992725Salfredint if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 86092725Salfredint if_allmulti(struct ifnet *, int); 861147256Sbrooksstruct ifnet* if_alloc(u_char); 86292725Salfredvoid if_attach(struct ifnet *); 863191418Srwatsonvoid if_dead(struct ifnet *); 86492725Salfredint if_delmulti(struct ifnet *, struct sockaddr *); 865167729Sbmsvoid if_delmulti_ifma(struct ifmultiaddr *); 86692725Salfredvoid if_detach(struct ifnet *); 867192605Szecvoid if_vmove(struct ifnet *, struct vnet *); 868146620Speadarvoid if_purgeaddrs(struct ifnet *); 869202935Ssyrinxvoid if_delallmulti(struct ifnet *); 87092725Salfredvoid if_down(struct ifnet *); 871167732Sbmsstruct ifmultiaddr * 872167732Sbms if_findmulti(struct ifnet *, struct sockaddr *); 873147256Sbrooksvoid if_free(struct ifnet *); 874147256Sbrooksvoid if_free_type(struct ifnet *, u_char); 875121816Sbrooksvoid if_initname(struct ifnet *, const char *, int); 876138542Ssamvoid if_link_state_change(struct ifnet *, int); 877103900Sbrooksint if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 878191161Skmacyvoid if_qflush(struct ifnet *); 879191367Srwatsonvoid if_ref(struct ifnet *); 880191367Srwatsonvoid if_rele(struct ifnet *); 88192725Salfredint if_setlladdr(struct ifnet *, const u_char *, int); 88292725Salfredvoid if_up(struct ifnet *); 88392725Salfredint ifioctl(struct socket *, u_long, caddr_t, struct thread *); 88492725Salfredint ifpromisc(struct ifnet *, int); 88592725Salfredstruct ifnet *ifunit(const char *); 886191423Srwatsonstruct ifnet *ifunit_ref(const char *); 88721259Swollman 888194259Ssamvoid ifq_init(struct ifaltq *, struct ifnet *ifp); 889194259Ssamvoid ifq_delete(struct ifaltq *); 890185162Skmacy 891197227Sqingliint ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 892197227Sqingliint ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 893197227Sqingli 89492725Salfredstruct ifaddr *ifa_ifwithaddr(struct sockaddr *); 895194622Srwatsonint ifa_ifwithaddr_check(struct sockaddr *); 896162068Sandrestruct ifaddr *ifa_ifwithbroadaddr(struct sockaddr *); 89792725Salfredstruct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 898208553Sqinglistruct ifaddr *ifa_ifwithnet(struct sockaddr *, int); 89992725Salfredstruct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 900178888Sjulianstruct ifaddr *ifa_ifwithroute_fib(int, struct sockaddr *, struct sockaddr *, u_int); 901178888Sjulian 90292725Salfredstruct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 90321259Swollman 90492725Salfredint if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 90521434Swollman 906147256Sbrookstypedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 907147256Sbrookstypedef void if_com_free_t(void *com, u_char type); 908147256Sbrooksvoid if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 909147256Sbrooksvoid if_deregister_com_alloc(u_char type); 910147256Sbrooks 91184931Sfjoe#define IF_LLADDR(ifp) \ 912152315Sru LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 91384931Sfjoe 91487902Sluigi#ifdef DEVICE_POLLING 915150789Sglebiusenum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 91687902Sluigi 917193096Sattiliotypedef int poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); 91892725Salfredint ether_poll_register(poll_handler_t *h, struct ifnet *ifp); 91992725Salfredint ether_poll_deregister(struct ifnet *ifp); 92087902Sluigi#endif /* DEVICE_POLLING */ 92187902Sluigi 92255205Speter#endif /* _KERNEL */ 92321259Swollman 92421259Swollman#endif /* !_NET_IF_VAR_H_ */ 925