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 * $FreeBSD$ 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]; 208252781Sandre u_int if_hw_tsomax; /* tso burst length limit, the minmum 209252781Sandre * is (IP_MAXPACKET / 8). 210252781Sandre * XXXAO: Have to find a better place 211252781Sandre * for it eventually. */ 212252781Sandre int if_ispare[3]; 213224151Sbz void *if_pspare[8]; /* 1 netmap, 7 TDB */ 21421259Swollman}; 21569152Sjlemon 21692725Salfredtypedef void if_init_f_t(void *); 21721259Swollman 218128376Sluigi/* 219128376Sluigi * XXX These aliases are terribly dangerous because they could apply 220128376Sluigi * to anything. 221128376Sluigi */ 22221259Swollman#define if_mtu if_data.ifi_mtu 22321259Swollman#define if_type if_data.ifi_type 22421259Swollman#define if_physical if_data.ifi_physical 22521259Swollman#define if_addrlen if_data.ifi_addrlen 22621259Swollman#define if_hdrlen if_data.ifi_hdrlen 22721259Swollman#define if_metric if_data.ifi_metric 228128871Sandre#define if_link_state if_data.ifi_link_state 22921259Swollman#define if_baudrate if_data.ifi_baudrate 23058698Sjlemon#define if_hwassist if_data.ifi_hwassist 23121259Swollman#define if_ipackets if_data.ifi_ipackets 23221259Swollman#define if_ierrors if_data.ifi_ierrors 23321259Swollman#define if_opackets if_data.ifi_opackets 23421259Swollman#define if_oerrors if_data.ifi_oerrors 23521259Swollman#define if_collisions if_data.ifi_collisions 23621259Swollman#define if_ibytes if_data.ifi_ibytes 23721259Swollman#define if_obytes if_data.ifi_obytes 23821259Swollman#define if_imcasts if_data.ifi_imcasts 23921259Swollman#define if_omcasts if_data.ifi_omcasts 24021259Swollman#define if_iqdrops if_data.ifi_iqdrops 24121259Swollman#define if_noproto if_data.ifi_noproto 24221259Swollman#define if_lastchange if_data.ifi_lastchange 24321259Swollman 24453541Sshin/* for compatibility with other BSDs */ 24553541Sshin#define if_addrlist if_addrhead 24653541Sshin#define if_list if_link 247160981Sbrooks#define if_name(ifp) ((ifp)->if_xname) 24853541Sshin 24921259Swollman/* 250148640Srwatson * Locks for address lists on the network interface. 251148640Srwatson */ 252148640Srwatson#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_mtx, \ 253148640Srwatson "if_addr_mtx", NULL, MTX_DEF) 254148640Srwatson#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_mtx) 255231157Sjhb#define IF_ADDR_WLOCK(if) mtx_lock(&(if)->if_addr_mtx) 256231157Sjhb#define IF_ADDR_WUNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) 257231157Sjhb#define IF_ADDR_RLOCK(if) mtx_lock(&(if)->if_addr_mtx) 258231157Sjhb#define IF_ADDR_RUNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) 259148640Srwatson#define IF_ADDR_LOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) 260231157Sjhb#define IF_ADDR_WLOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) 261231157Sjhb/* XXX: Compat. */ 262231157Sjhb#define IF_ADDR_LOCK(if) IF_ADDR_WLOCK(if) 263231157Sjhb#define IF_ADDR_UNLOCK(if) IF_ADDR_WUNLOCK(if) 264148640Srwatson 265148640Srwatson/* 266195020Srwatson * Function variations on locking macros intended to be used by loadable 267195020Srwatson * kernel modules in order to divorce them from the internals of address list 268195020Srwatson * locking. 269195020Srwatson */ 270195020Srwatsonvoid if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 271195020Srwatsonvoid if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 272195020Srwatsonvoid if_maddr_rlock(struct ifnet *ifp); /* if_multiaddrs */ 273195020Srwatsonvoid if_maddr_runlock(struct ifnet *ifp); /* if_multiaddrs */ 274195020Srwatson 275195020Srwatson/* 27621259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 27721259Swollman * are queues of messages stored on ifqueue structures 27821259Swollman * (defined above). Entries are added to and deleted from these structures 27921259Swollman * by these macros, which should be called with ipl raised to splimp(). 28021259Swollman */ 28172200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 28272200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 283130416Smlaier#define IF_LOCK_ASSERT(ifq) mtx_assert(&(ifq)->ifq_mtx, MA_OWNED) 28469152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 28569152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 28669152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 28721259Swollman 28869152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 28969152Sjlemon (m)->m_nextpkt = NULL; \ 29069152Sjlemon if ((ifq)->ifq_tail == NULL) \ 29169152Sjlemon (ifq)->ifq_head = m; \ 29269152Sjlemon else \ 29369152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 29469152Sjlemon (ifq)->ifq_tail = m; \ 29569152Sjlemon (ifq)->ifq_len++; \ 29669152Sjlemon} while (0) 29769152Sjlemon 29869152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 29969152Sjlemon IF_LOCK(ifq); \ 30069152Sjlemon _IF_ENQUEUE(ifq, m); \ 30169152Sjlemon IF_UNLOCK(ifq); \ 30269152Sjlemon} while (0) 30369152Sjlemon 30469152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 30569152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 30669152Sjlemon if ((ifq)->ifq_tail == NULL) \ 30769152Sjlemon (ifq)->ifq_tail = (m); \ 30869152Sjlemon (ifq)->ifq_head = (m); \ 30969152Sjlemon (ifq)->ifq_len++; \ 31069152Sjlemon} while (0) 31169152Sjlemon 31269152Sjlemon#define IF_PREPEND(ifq, m) do { \ 31369152Sjlemon IF_LOCK(ifq); \ 31469152Sjlemon _IF_PREPEND(ifq, m); \ 31569152Sjlemon IF_UNLOCK(ifq); \ 31669152Sjlemon} while (0) 31769152Sjlemon 31869152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 31969152Sjlemon (m) = (ifq)->ifq_head; \ 32069152Sjlemon if (m) { \ 321136950Sjmg if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ 32269152Sjlemon (ifq)->ifq_tail = NULL; \ 32369152Sjlemon (m)->m_nextpkt = NULL; \ 32469152Sjlemon (ifq)->ifq_len--; \ 32569152Sjlemon } \ 32669152Sjlemon} while (0) 32769152Sjlemon 32869152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 32969152Sjlemon IF_LOCK(ifq); \ 33069152Sjlemon _IF_DEQUEUE(ifq, m); \ 33169152Sjlemon IF_UNLOCK(ifq); \ 33269152Sjlemon} while (0) 33369152Sjlemon 334229690Sglebius#define _IF_DEQUEUE_ALL(ifq, m) do { \ 335229690Sglebius (m) = (ifq)->ifq_head; \ 336229690Sglebius (ifq)->ifq_head = (ifq)->ifq_tail = NULL; \ 337229690Sglebius (ifq)->ifq_len = 0; \ 338229690Sglebius} while (0) 339229690Sglebius 340229690Sglebius#define IF_DEQUEUE_ALL(ifq, m) do { \ 341229690Sglebius IF_LOCK(ifq); \ 342229690Sglebius _IF_DEQUEUE_ALL(ifq, m); \ 343229690Sglebius IF_UNLOCK(ifq); \ 344229690Sglebius} while (0) 345229690Sglebius 346130416Smlaier#define _IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 347130416Smlaier#define IF_POLL(ifq, m) _IF_POLL(ifq, m) 348130416Smlaier 349130416Smlaier#define _IF_DRAIN(ifq) do { \ 35069152Sjlemon struct mbuf *m; \ 35169152Sjlemon for (;;) { \ 35269152Sjlemon _IF_DEQUEUE(ifq, m); \ 35369152Sjlemon if (m == NULL) \ 35469152Sjlemon break; \ 35569152Sjlemon m_freem(m); \ 35669152Sjlemon } \ 35769152Sjlemon} while (0) 35869152Sjlemon 359130416Smlaier#define IF_DRAIN(ifq) do { \ 360130416Smlaier IF_LOCK(ifq); \ 361130416Smlaier _IF_DRAIN(ifq); \ 362130416Smlaier IF_UNLOCK(ifq); \ 363130416Smlaier} while(0) 364130416Smlaier 36555205Speter#ifdef _KERNEL 366202588Sthompsa/* interface link layer address change event */ 367202588Sthompsatypedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 368202588SthompsaEVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 369126264Smlaier/* interface address change event */ 370126264Smlaiertypedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 371126264SmlaierEVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 372126264Smlaier/* new interface arrival event */ 373126264Smlaiertypedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 374126264SmlaierEVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 375126264Smlaier/* interface departure event */ 376126264Smlaiertypedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 377126264SmlaierEVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 378219819Sjeff/* Interface link state change event */ 379219819Sjefftypedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 380219819SjeffEVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 381126264Smlaier 382159781Smlaier/* 383159781Smlaier * interface groups 384159781Smlaier */ 385159781Smlaierstruct ifg_group { 386159781Smlaier char ifg_group[IFNAMSIZ]; 387159781Smlaier u_int ifg_refcnt; 388159781Smlaier void *ifg_pf_kif; 389159781Smlaier TAILQ_HEAD(, ifg_member) ifg_members; 390159781Smlaier TAILQ_ENTRY(ifg_group) ifg_next; 391159781Smlaier}; 392159781Smlaier 393159781Smlaierstruct ifg_member { 394159781Smlaier TAILQ_ENTRY(ifg_member) ifgm_next; 395159781Smlaier struct ifnet *ifgm_ifp; 396159781Smlaier}; 397159781Smlaier 398159781Smlaierstruct ifg_list { 399159781Smlaier struct ifg_group *ifgl_group; 400159781Smlaier TAILQ_ENTRY(ifg_list) ifgl_next; 401159781Smlaier}; 402159781Smlaier 403159781Smlaier/* group attach event */ 404159781Smlaiertypedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 405159781SmlaierEVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 406159781Smlaier/* group detach event */ 407159781Smlaiertypedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 408159781SmlaierEVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 409159781Smlaier/* group change event */ 410159781Smlaiertypedef void (*group_change_event_handler_t)(void *, const char *); 411159781SmlaierEVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 412159781Smlaier 413121470Sume#define IF_AFDATA_LOCK_INIT(ifp) \ 414186199Skmacy rw_init(&(ifp)->if_afdata_lock, "if_afdata") 415121470Sume 416186199Skmacy#define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 417186199Skmacy#define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 418186199Skmacy#define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 419186199Skmacy#define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 420186199Skmacy#define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 421186199Skmacy#define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 422186199Skmacy#define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 423186199Skmacy#define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 424186119Sqingli 425186199Skmacy#define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 426240313Sglebius#define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) 427240313Sglebius#define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) 428186199Skmacy#define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 429186199Skmacy 430137065Srwatsonint if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, 431137065Srwatson int adjust); 432130416Smlaier#define IF_HANDOFF(ifq, m, ifp) \ 433130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, 0) 434130416Smlaier#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) \ 435130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, adj) 43621259Swollman 437132712Srwatsonvoid if_start(struct ifnet *); 438132712Srwatson 439130416Smlaier#define IFQ_ENQUEUE(ifq, m, err) \ 440130416Smlaierdo { \ 441130416Smlaier IF_LOCK(ifq); \ 442130416Smlaier if (ALTQ_IS_ENABLED(ifq)) \ 443130416Smlaier ALTQ_ENQUEUE(ifq, m, NULL, err); \ 444130416Smlaier else { \ 445130416Smlaier if (_IF_QFULL(ifq)) { \ 446130416Smlaier m_freem(m); \ 447130416Smlaier (err) = ENOBUFS; \ 448130416Smlaier } else { \ 449130416Smlaier _IF_ENQUEUE(ifq, m); \ 450130416Smlaier (err) = 0; \ 451130416Smlaier } \ 452130416Smlaier } \ 453130416Smlaier if (err) \ 454130416Smlaier (ifq)->ifq_drops++; \ 455130416Smlaier IF_UNLOCK(ifq); \ 456130416Smlaier} while (0) 45721259Swollman 458130416Smlaier#define IFQ_DEQUEUE_NOLOCK(ifq, m) \ 459130416Smlaierdo { \ 460130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 461130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_REMOVE); \ 462130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 463130416Smlaier ALTQ_DEQUEUE(ifq, m); \ 464130416Smlaier else \ 465130416Smlaier _IF_DEQUEUE(ifq, m); \ 466130416Smlaier} while (0) 467130416Smlaier 468130416Smlaier#define IFQ_DEQUEUE(ifq, m) \ 469130416Smlaierdo { \ 470130416Smlaier IF_LOCK(ifq); \ 471130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 472130416Smlaier IF_UNLOCK(ifq); \ 473130416Smlaier} while (0) 474130416Smlaier 475130416Smlaier#define IFQ_POLL_NOLOCK(ifq, m) \ 476130416Smlaierdo { \ 477130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 478130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_POLL); \ 479130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 480130416Smlaier ALTQ_POLL(ifq, m); \ 481130416Smlaier else \ 482130416Smlaier _IF_POLL(ifq, m); \ 483130416Smlaier} while (0) 484130416Smlaier 485130416Smlaier#define IFQ_POLL(ifq, m) \ 486130416Smlaierdo { \ 487130416Smlaier IF_LOCK(ifq); \ 488130416Smlaier IFQ_POLL_NOLOCK(ifq, m); \ 489130416Smlaier IF_UNLOCK(ifq); \ 490130416Smlaier} while (0) 491130416Smlaier 492130416Smlaier#define IFQ_PURGE_NOLOCK(ifq) \ 493130416Smlaierdo { \ 494130416Smlaier if (ALTQ_IS_ENABLED(ifq)) { \ 495130416Smlaier ALTQ_PURGE(ifq); \ 496130416Smlaier } else \ 497130416Smlaier _IF_DRAIN(ifq); \ 498130416Smlaier} while (0) 499130416Smlaier 500130416Smlaier#define IFQ_PURGE(ifq) \ 501130416Smlaierdo { \ 502130416Smlaier IF_LOCK(ifq); \ 503130416Smlaier IFQ_PURGE_NOLOCK(ifq); \ 504130416Smlaier IF_UNLOCK(ifq); \ 505130416Smlaier} while (0) 506130416Smlaier 507130416Smlaier#define IFQ_SET_READY(ifq) \ 508130416Smlaier do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 509130416Smlaier 510130416Smlaier#define IFQ_LOCK(ifq) IF_LOCK(ifq) 511130416Smlaier#define IFQ_UNLOCK(ifq) IF_UNLOCK(ifq) 512130416Smlaier#define IFQ_LOCK_ASSERT(ifq) IF_LOCK_ASSERT(ifq) 513130416Smlaier#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 514130416Smlaier#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 515130416Smlaier#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 516130416Smlaier#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 517130416Smlaier#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 518130416Smlaier 519148886Srwatson/* 520148886Srwatson * The IFF_DRV_OACTIVE test should really occur in the device driver, not in 521148886Srwatson * the handoff logic, as that flag is locked by the device driver. 522148886Srwatson */ 523130416Smlaier#define IFQ_HANDOFF_ADJ(ifp, m, adj, err) \ 524130416Smlaierdo { \ 525130416Smlaier int len; \ 526130416Smlaier short mflags; \ 527130416Smlaier \ 528130416Smlaier len = (m)->m_pkthdr.len; \ 529130416Smlaier mflags = (m)->m_flags; \ 530130416Smlaier IFQ_ENQUEUE(&(ifp)->if_snd, m, err); \ 531130416Smlaier if ((err) == 0) { \ 532130416Smlaier (ifp)->if_obytes += len + (adj); \ 533130416Smlaier if (mflags & M_MCAST) \ 534130416Smlaier (ifp)->if_omcasts++; \ 535148886Srwatson if (((ifp)->if_drv_flags & IFF_DRV_OACTIVE) == 0) \ 536132712Srwatson if_start(ifp); \ 537130416Smlaier } \ 538130416Smlaier} while (0) 539130416Smlaier 540130416Smlaier#define IFQ_HANDOFF(ifp, m, err) \ 541130512Smlaier IFQ_HANDOFF_ADJ(ifp, m, 0, err) 542130416Smlaier 543130416Smlaier#define IFQ_DRV_DEQUEUE(ifq, m) \ 544130416Smlaierdo { \ 545130416Smlaier (m) = (ifq)->ifq_drv_head; \ 546130416Smlaier if (m) { \ 547130416Smlaier if (((ifq)->ifq_drv_head = (m)->m_nextpkt) == NULL) \ 548130416Smlaier (ifq)->ifq_drv_tail = NULL; \ 549130416Smlaier (m)->m_nextpkt = NULL; \ 550130416Smlaier (ifq)->ifq_drv_len--; \ 551130416Smlaier } else { \ 552130416Smlaier IFQ_LOCK(ifq); \ 553130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 554130416Smlaier while ((ifq)->ifq_drv_len < (ifq)->ifq_drv_maxlen) { \ 555130416Smlaier struct mbuf *m0; \ 556130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m0); \ 557130416Smlaier if (m0 == NULL) \ 558130416Smlaier break; \ 559130416Smlaier m0->m_nextpkt = NULL; \ 560130416Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 561130416Smlaier (ifq)->ifq_drv_head = m0; \ 562130416Smlaier else \ 563130416Smlaier (ifq)->ifq_drv_tail->m_nextpkt = m0; \ 564130416Smlaier (ifq)->ifq_drv_tail = m0; \ 565130416Smlaier (ifq)->ifq_drv_len++; \ 566130416Smlaier } \ 567130416Smlaier IFQ_UNLOCK(ifq); \ 568130416Smlaier } \ 569130416Smlaier} while (0) 570130416Smlaier 571130416Smlaier#define IFQ_DRV_PREPEND(ifq, m) \ 572130416Smlaierdo { \ 573130416Smlaier (m)->m_nextpkt = (ifq)->ifq_drv_head; \ 574132152Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 575132152Smlaier (ifq)->ifq_drv_tail = (m); \ 576130416Smlaier (ifq)->ifq_drv_head = (m); \ 577130416Smlaier (ifq)->ifq_drv_len++; \ 578130416Smlaier} while (0) 579130416Smlaier 580130416Smlaier#define IFQ_DRV_IS_EMPTY(ifq) \ 581130416Smlaier (((ifq)->ifq_drv_len == 0) && ((ifq)->ifq_len == 0)) 582130416Smlaier 583130416Smlaier#define IFQ_DRV_PURGE(ifq) \ 584130416Smlaierdo { \ 585132152Smlaier struct mbuf *m, *n = (ifq)->ifq_drv_head; \ 586132152Smlaier while((m = n) != NULL) { \ 587132152Smlaier n = m->m_nextpkt; \ 588130416Smlaier m_freem(m); \ 589130416Smlaier } \ 590130416Smlaier (ifq)->ifq_drv_head = (ifq)->ifq_drv_tail = NULL; \ 591130416Smlaier (ifq)->ifq_drv_len = 0; \ 592130416Smlaier IFQ_PURGE(ifq); \ 593130416Smlaier} while (0) 594130416Smlaier 595186207Skmacy#ifdef _KERNEL 596186207Skmacystatic __inline int 597186213Skmacydrbr_enqueue(struct ifnet *ifp, struct buf_ring *br, struct mbuf *m) 598186207Skmacy{ 599186207Skmacy int error = 0; 600186207Skmacy 601191033Skmacy#ifdef ALTQ 602191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 603191033Skmacy IFQ_ENQUEUE(&ifp->if_snd, m, error); 604191033Skmacy return (error); 605191033Skmacy } 606191033Skmacy#endif 607243440Sglebius error = buf_ring_enqueue(br, m); 608243440Sglebius if (error) 609186207Skmacy m_freem(m); 610243440Sglebius 611186207Skmacy return (error); 612186207Skmacy} 613186207Skmacy 614186207Skmacystatic __inline void 615248287Sjfvdrbr_putback(struct ifnet *ifp, struct buf_ring *br, struct mbuf *new) 616248287Sjfv{ 617248287Sjfv /* 618248287Sjfv * The top of the list needs to be swapped 619248287Sjfv * for this one. 620248287Sjfv */ 621248287Sjfv#ifdef ALTQ 622248287Sjfv if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 623248287Sjfv /* 624248287Sjfv * Peek in altq case dequeued it 625248287Sjfv * so put it back. 626248287Sjfv */ 627248287Sjfv IFQ_DRV_PREPEND(&ifp->if_snd, new); 628248287Sjfv return; 629248287Sjfv } 630248287Sjfv#endif 631248287Sjfv buf_ring_putback_sc(br, new); 632248287Sjfv} 633248287Sjfv 634248287Sjfvstatic __inline struct mbuf * 635248287Sjfvdrbr_peek(struct ifnet *ifp, struct buf_ring *br) 636248287Sjfv{ 637248287Sjfv#ifdef ALTQ 638248287Sjfv struct mbuf *m; 639248287Sjfv if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 640248287Sjfv /* 641248287Sjfv * Pull it off like a dequeue 642248287Sjfv * since drbr_advance() does nothing 643248287Sjfv * for altq and drbr_putback() will 644248287Sjfv * use the old prepend function. 645248287Sjfv */ 646248287Sjfv IFQ_DEQUEUE(&ifp->if_snd, m); 647248287Sjfv return (m); 648248287Sjfv } 649248287Sjfv#endif 650248287Sjfv return(buf_ring_peek(br)); 651248287Sjfv} 652248287Sjfv 653248287Sjfvstatic __inline void 654194518Skmacydrbr_flush(struct ifnet *ifp, struct buf_ring *br) 655186207Skmacy{ 656186207Skmacy struct mbuf *m; 657186207Skmacy 658194518Skmacy#ifdef ALTQ 659203834Smlaier if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) 660203834Smlaier IFQ_PURGE(&ifp->if_snd); 661194518Skmacy#endif 662186207Skmacy while ((m = buf_ring_dequeue_sc(br)) != NULL) 663186207Skmacy m_freem(m); 664194518Skmacy} 665186207Skmacy 666194518Skmacystatic __inline void 667194518Skmacydrbr_free(struct buf_ring *br, struct malloc_type *type) 668194518Skmacy{ 669194518Skmacy 670194518Skmacy drbr_flush(NULL, br); 671186207Skmacy buf_ring_free(br, type); 672186207Skmacy} 673191033Skmacy 674191033Skmacystatic __inline struct mbuf * 675191033Skmacydrbr_dequeue(struct ifnet *ifp, struct buf_ring *br) 676191033Skmacy{ 677191033Skmacy#ifdef ALTQ 678191033Skmacy struct mbuf *m; 679191033Skmacy 680248287Sjfv if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 681203834Smlaier IFQ_DEQUEUE(&ifp->if_snd, m); 682191033Skmacy return (m); 683191033Skmacy } 684186207Skmacy#endif 685191033Skmacy return (buf_ring_dequeue_sc(br)); 686191033Skmacy} 687186207Skmacy 688248287Sjfvstatic __inline void 689248287Sjfvdrbr_advance(struct ifnet *ifp, struct buf_ring *br) 690248287Sjfv{ 691248287Sjfv#ifdef ALTQ 692248287Sjfv /* Nothing to do here since peek dequeues in altq case */ 693248287Sjfv if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) 694248287Sjfv return; 695248287Sjfv#endif 696248287Sjfv return (buf_ring_advance_sc(br)); 697248287Sjfv} 698248287Sjfv 699248287Sjfv 700193848Skmacystatic __inline struct mbuf * 701193848Skmacydrbr_dequeue_cond(struct ifnet *ifp, struct buf_ring *br, 702193848Skmacy int (*func) (struct mbuf *, void *), void *arg) 703193848Skmacy{ 704193848Skmacy struct mbuf *m; 705193848Skmacy#ifdef ALTQ 706203834Smlaier if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 707203834Smlaier IFQ_LOCK(&ifp->if_snd); 708203834Smlaier IFQ_POLL_NOLOCK(&ifp->if_snd, m); 709203834Smlaier if (m != NULL && func(m, arg) == 0) { 710203834Smlaier IFQ_UNLOCK(&ifp->if_snd); 711203834Smlaier return (NULL); 712203834Smlaier } 713205197Smlaier IFQ_DEQUEUE_NOLOCK(&ifp->if_snd, m); 714203834Smlaier IFQ_UNLOCK(&ifp->if_snd); 715193848Skmacy return (m); 716193848Skmacy } 717193848Skmacy#endif 718193848Skmacy m = buf_ring_peek(br); 719193848Skmacy if (m == NULL || func(m, arg) == 0) 720193848Skmacy return (NULL); 721193848Skmacy 722193848Skmacy return (buf_ring_dequeue_sc(br)); 723193848Skmacy} 724193848Skmacy 725191033Skmacystatic __inline int 726191033Skmacydrbr_empty(struct ifnet *ifp, struct buf_ring *br) 727191033Skmacy{ 728191033Skmacy#ifdef ALTQ 729191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) 730203834Smlaier return (IFQ_IS_EMPTY(&ifp->if_snd)); 731191033Skmacy#endif 732191033Skmacy return (buf_ring_empty(br)); 733191033Skmacy} 734193848Skmacy 735193848Skmacystatic __inline int 736203834Smlaierdrbr_needs_enqueue(struct ifnet *ifp, struct buf_ring *br) 737203834Smlaier{ 738203834Smlaier#ifdef ALTQ 739203834Smlaier if (ALTQ_IS_ENABLED(&ifp->if_snd)) 740203834Smlaier return (1); 741203834Smlaier#endif 742203834Smlaier return (!buf_ring_empty(br)); 743203834Smlaier} 744203834Smlaier 745203834Smlaierstatic __inline int 746193848Skmacydrbr_inuse(struct ifnet *ifp, struct buf_ring *br) 747193848Skmacy{ 748193848Skmacy#ifdef ALTQ 749193848Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) 750193848Skmacy return (ifp->if_snd.ifq_len); 751191033Skmacy#endif 752193848Skmacy return (buf_ring_count(br)); 753193848Skmacy} 754193848Skmacy#endif 75549459Sbrian/* 75649459Sbrian * 72 was chosen below because it is the size of a TCP/IP 75749459Sbrian * header (40) + the minimum mss (32). 75849459Sbrian */ 75949459Sbrian#define IF_MINMTU 72 76049459Sbrian#define IF_MAXMTU 65535 76149459Sbrian 762252555Snp#define TOEDEV(ifp) ((ifp)->if_llsoftc) 763252555Snp 76455205Speter#endif /* _KERNEL */ 76521259Swollman 76621259Swollman/* 76721259Swollman * The ifaddr structure contains information about one address 76821259Swollman * of an interface. They are maintained by the different address families, 76921259Swollman * are allocated and attached when an address is set, and are linked 77021259Swollman * together so all addresses for an interface can be located. 771128291Sluigi * 772128291Sluigi * NOTE: a 'struct ifaddr' is always at the beginning of a larger 773128291Sluigi * chunk of malloc'ed memory, where we store the three addresses 774128291Sluigi * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 77521259Swollman */ 77621259Swollmanstruct ifaddr { 77721259Swollman struct sockaddr *ifa_addr; /* address of interface */ 77821259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 77921259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 78021259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 78167334Sjoe struct if_data if_data; /* not all members are meaningful */ 78221259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 78360938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 78421259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 78592725Salfred (int, struct rtentry *, struct rt_addrinfo *); 78621259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 78747254Spb u_int ifa_refcnt; /* references to this structure */ 78821259Swollman int ifa_metric; /* cost of going out this interface */ 78928845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 79092725Salfred (struct ifaddr *, struct sockaddr *); 791108033Shsu struct mtx ifa_mtx; 79221259Swollman}; 79321259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 794201282Sqingli#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 79521259Swollman 79653541Sshin/* for compatibility with other BSDs */ 79753541Sshin#define ifa_list ifa_link 79853541Sshin 799194602Srwatson#ifdef _KERNEL 800108033Shsu#define IFA_LOCK(ifa) mtx_lock(&(ifa)->ifa_mtx) 801108033Shsu#define IFA_UNLOCK(ifa) mtx_unlock(&(ifa)->ifa_mtx) 802108033Shsu 803194602Srwatsonvoid ifa_free(struct ifaddr *ifa); 804194602Srwatsonvoid ifa_init(struct ifaddr *ifa); 805194602Srwatsonvoid ifa_ref(struct ifaddr *ifa); 806194602Srwatson#endif 807194602Srwatson 80821404Swollman/* 80952904Sshin * The prefix structure contains information about one prefix 81052904Sshin * of an interface. They are maintained by the different address families, 811108470Sschweikh * are allocated and attached when a prefix or an address is set, 81253541Sshin * and are linked together so all prefixes for an interface can be located. 81352904Sshin */ 81452904Sshinstruct ifprefix { 81552904Sshin struct sockaddr *ifpr_prefix; /* prefix of interface */ 81652904Sshin struct ifnet *ifpr_ifp; /* back-pointer to interface */ 81760938Sjake TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 81852904Sshin u_char ifpr_plen; /* prefix length in bits */ 81952904Sshin u_char ifpr_type; /* protocol dependent prefix type */ 82052904Sshin}; 82152904Sshin 82252904Sshin/* 82321404Swollman * Multicast address structure. This is analogous to the ifaddr 82421404Swollman * structure except that it keeps track of multicast addresses. 82521404Swollman */ 82621404Swollmanstruct ifmultiaddr { 82772084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 82821434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 82921434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 83021434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 83121434Swollman u_int ifma_refcount; /* reference count */ 83221434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 833167729Sbms struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 83421404Swollman}; 83521404Swollman 83655205Speter#ifdef _KERNEL 83721259Swollman 838196481Srwatsonextern struct rwlock ifnet_rwlock; 839196481Srwatsonextern struct sx ifnet_sxlock; 840108172Shsu 841196481Srwatson#define IFNET_LOCK_INIT() do { \ 842196481Srwatson rw_init_flags(&ifnet_rwlock, "ifnet_rw", RW_RECURSE); \ 843196481Srwatson sx_init_flags(&ifnet_sxlock, "ifnet_sx", SX_RECURSE); \ 844196481Srwatson} while(0) 845196481Srwatson 846196481Srwatson#define IFNET_WLOCK() do { \ 847196481Srwatson sx_xlock(&ifnet_sxlock); \ 848196481Srwatson rw_wlock(&ifnet_rwlock); \ 849196481Srwatson} while (0) 850196481Srwatson 851196481Srwatson#define IFNET_WUNLOCK() do { \ 852196481Srwatson rw_wunlock(&ifnet_rwlock); \ 853196481Srwatson sx_xunlock(&ifnet_sxlock); \ 854196481Srwatson} while (0) 855196481Srwatson 856191367Srwatson/* 857196481Srwatson * To assert the ifnet lock, you must know not only whether it's for read or 858196481Srwatson * write, but also whether it was acquired with sleep support or not. 859196481Srwatson */ 860196481Srwatson#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 861196481Srwatson#define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 862196481Srwatson#define IFNET_WLOCK_ASSERT() do { \ 863196481Srwatson sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 864196481Srwatson rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 865196481Srwatson} while (0) 866196481Srwatson 867196481Srwatson#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 868196481Srwatson#define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 869196481Srwatson#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 870196481Srwatson#define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 871196481Srwatson 872196481Srwatson/* 873191367Srwatson * Look up an ifnet given its index; the _ref variant also acquires a 874191367Srwatson * reference that must be freed using if_rele(). It is almost always a bug 875191367Srwatson * to call ifnet_byindex() instead if ifnet_byindex_ref(). 876191367Srwatson */ 877180042Srwatsonstruct ifnet *ifnet_byindex(u_short idx); 878191816Szecstruct ifnet *ifnet_byindex_locked(u_short idx); 879191367Srwatsonstruct ifnet *ifnet_byindex_ref(u_short idx); 880181892Skmacy 881128315Sluigi/* 882128315Sluigi * Given the index, ifaddr_byindex() returns the one and only 883128315Sluigi * link-level ifaddr for the interface. You are not supposed to use 884128315Sluigi * it to traverse the list of addresses associated to the interface. 885128315Sluigi */ 886180042Srwatsonstruct ifaddr *ifaddr_byindex(u_short idx); 88783130Sjlemon 888195699SrwatsonVNET_DECLARE(struct ifnethead, ifnet); 889195699SrwatsonVNET_DECLARE(struct ifgrouphead, ifg_head); 890195699SrwatsonVNET_DECLARE(int, if_index); 891195699SrwatsonVNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 892195914SqingliVNET_DECLARE(int, useloopback); 893195699Srwatson 894195727Srwatson#define V_ifnet VNET(ifnet) 895195727Srwatson#define V_ifg_head VNET(ifg_head) 896195727Srwatson#define V_if_index VNET(if_index) 897195727Srwatson#define V_loif VNET(loif) 898195914Sqingli#define V_useloopback VNET(useloopback) 899195699Srwatson 900186048Sbzextern int ifqmaxlen; 90121259Swollman 902159781Smlaierint if_addgroup(struct ifnet *, const char *); 903159781Smlaierint if_delgroup(struct ifnet *, const char *); 90492725Salfredint if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 90592725Salfredint if_allmulti(struct ifnet *, int); 906147256Sbrooksstruct ifnet* if_alloc(u_char); 90792725Salfredvoid if_attach(struct ifnet *); 908191418Srwatsonvoid if_dead(struct ifnet *); 90992725Salfredint if_delmulti(struct ifnet *, struct sockaddr *); 910167729Sbmsvoid if_delmulti_ifma(struct ifmultiaddr *); 91192725Salfredvoid if_detach(struct ifnet *); 912192605Szecvoid if_vmove(struct ifnet *, struct vnet *); 913146620Speadarvoid if_purgeaddrs(struct ifnet *); 914202935Ssyrinxvoid if_delallmulti(struct ifnet *); 91592725Salfredvoid if_down(struct ifnet *); 916167732Sbmsstruct ifmultiaddr * 917167732Sbms if_findmulti(struct ifnet *, struct sockaddr *); 918147256Sbrooksvoid if_free(struct ifnet *); 919147256Sbrooksvoid if_free_type(struct ifnet *, u_char); 920121816Sbrooksvoid if_initname(struct ifnet *, const char *, int); 921138542Ssamvoid if_link_state_change(struct ifnet *, int); 922103900Sbrooksint if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 923191161Skmacyvoid if_qflush(struct ifnet *); 924191367Srwatsonvoid if_ref(struct ifnet *); 925191367Srwatsonvoid if_rele(struct ifnet *); 92692725Salfredint if_setlladdr(struct ifnet *, const u_char *, int); 92792725Salfredvoid if_up(struct ifnet *); 92892725Salfredint ifioctl(struct socket *, u_long, caddr_t, struct thread *); 92992725Salfredint ifpromisc(struct ifnet *, int); 93092725Salfredstruct ifnet *ifunit(const char *); 931191423Srwatsonstruct ifnet *ifunit_ref(const char *); 93221259Swollman 933194259Ssamvoid ifq_init(struct ifaltq *, struct ifnet *ifp); 934194259Ssamvoid ifq_delete(struct ifaltq *); 935185162Skmacy 936197227Sqingliint ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 937197227Sqingliint ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 938197227Sqingli 93992725Salfredstruct ifaddr *ifa_ifwithaddr(struct sockaddr *); 940194622Srwatsonint ifa_ifwithaddr_check(struct sockaddr *); 941162068Sandrestruct ifaddr *ifa_ifwithbroadaddr(struct sockaddr *); 94292725Salfredstruct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 943208553Sqinglistruct ifaddr *ifa_ifwithnet(struct sockaddr *, int); 94492725Salfredstruct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 945178888Sjulianstruct ifaddr *ifa_ifwithroute_fib(int, struct sockaddr *, struct sockaddr *, u_int); 946178888Sjulian 94792725Salfredstruct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 94821259Swollman 94992725Salfredint if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 95021434Swollman 951147256Sbrookstypedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 952147256Sbrookstypedef void if_com_free_t(void *com, u_char type); 953147256Sbrooksvoid if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 954147256Sbrooksvoid if_deregister_com_alloc(u_char type); 955147256Sbrooks 95684931Sfjoe#define IF_LLADDR(ifp) \ 957152315Sru LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 95884931Sfjoe 95987902Sluigi#ifdef DEVICE_POLLING 960150789Sglebiusenum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 96187902Sluigi 962193096Sattiliotypedef int poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); 96392725Salfredint ether_poll_register(poll_handler_t *h, struct ifnet *ifp); 96492725Salfredint ether_poll_deregister(struct ifnet *ifp); 96587902Sluigi#endif /* DEVICE_POLLING */ 96687902Sluigi 96755205Speter#endif /* _KERNEL */ 96821259Swollman 96921259Swollman#endif /* !_NET_IF_VAR_H_ */ 970