ifq.h revision 126264
121259Swollman/* 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 * 3. All advertising materials mentioning features or use of this software 1421259Swollman * must display the following acknowledgement: 1521259Swollman * This product includes software developed by the University of 1621259Swollman * California, Berkeley and its contributors. 1721259Swollman * 4. Neither the name of the University nor the names of its contributors 1821259Swollman * may be used to endorse or promote products derived from this software 1921259Swollman * without specific prior written permission. 2021259Swollman * 2121259Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2221259Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2321259Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2421259Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2521259Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2621259Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2721259Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2821259Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2921259Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3021259Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3121259Swollman * SUCH DAMAGE. 3221259Swollman * 3321259Swollman * From: @(#)if.h 8.1 (Berkeley) 6/10/93 3450477Speter * $FreeBSD: head/sys/net/if_var.h 126264 2004-02-26 04:27:55Z mlaier $ 3521259Swollman */ 3621259Swollman 3721259Swollman#ifndef _NET_IF_VAR_H_ 3821259Swollman#define _NET_IF_VAR_H_ 3921259Swollman 4021259Swollman/* 4121259Swollman * Structures defining a network interface, providing a packet 4221259Swollman * transport mechanism (ala level 0 of the PUP protocols). 4321259Swollman * 4421259Swollman * Each interface accepts output datagrams of a specified maximum 4521259Swollman * length, and provides higher level routines with input datagrams 4621259Swollman * received from its medium. 4721259Swollman * 4821259Swollman * Output occurs when the routine if_output is called, with three parameters: 4921259Swollman * (*ifp->if_output)(ifp, m, dst, rt) 5021259Swollman * Here m is the mbuf chain to be sent and dst is the destination address. 5121259Swollman * The output routine encapsulates the supplied datagram if necessary, 5221259Swollman * and then transmits it on its medium. 5321259Swollman * 5421259Swollman * On input, each interface unwraps the data received by it, and either 55108533Sschweikh * places it on the input queue of an internetwork datagram routine 5621259Swollman * and posts the associated software interrupt, or passes the datagram to a raw 5721259Swollman * packet input routine. 5821259Swollman * 5921259Swollman * Routines exist for locating interfaces by their addresses 60108533Sschweikh * or for locating an interface on a certain network, as well as more general 6121259Swollman * routing and gateway routines maintaining information used to locate 6221259Swollman * interfaces. These routines live in the files if.c and route.c 6321259Swollman */ 6421259Swollman 6521259Swollman#ifdef __STDC__ 6621259Swollman/* 6721259Swollman * Forward structure declarations for function prototypes [sic]. 6821259Swollman */ 6921259Swollmanstruct mbuf; 7083366Sjulianstruct thread; 7121259Swollmanstruct rtentry; 7285074Srustruct rt_addrinfo; 7321259Swollmanstruct socket; 7421259Swollmanstruct ether_header; 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> 8269224Sjlemon#endif /* _KERNEL */ 8374914Sjhb#include <sys/lock.h> /* XXX */ 8474914Sjhb#include <sys/mutex.h> /* XXX */ 8583130Sjlemon#include <sys/event.h> /* XXX */ 8669152Sjlemon 87121816Sbrooks#define IF_DUNIT_NONE -1 88121816Sbrooks 8960938SjakeTAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 9060938SjakeTAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 9160938SjakeTAILQ_HEAD(ifprefixhead, ifprefix); 9272084SphkTAILQ_HEAD(ifmultihead, ifmultiaddr); 9321259Swollman 9421259Swollman/* 9521259Swollman * Structure defining a queue for a network interface. 9621259Swollman */ 9721259Swollmanstruct ifqueue { 9821259Swollman struct mbuf *ifq_head; 9921259Swollman struct mbuf *ifq_tail; 10021259Swollman int ifq_len; 10121259Swollman int ifq_maxlen; 10221259Swollman int ifq_drops; 10369152Sjlemon struct mtx ifq_mtx; 10421259Swollman}; 10521259Swollman 10621259Swollman/* 10721259Swollman * Structure defining a network interface. 10821259Swollman * 10921259Swollman * (Would like to call this struct ``if'', but C isn't PL/1.) 11021259Swollman */ 11184380Smjacob 11284380Smjacob/* 11384380Smjacob * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with 11484380Smjacob * one of these structures, typically held within an arpcom structure. 11586797Sluigi * 11686797Sluigi * struct <foo>_softc { 11786797Sluigi * struct arpcom { 11886797Sluigi * struct ifnet ac_if; 11986797Sluigi * ... 12086797Sluigi * } <arpcom> ; 12186797Sluigi * ... 12286797Sluigi * }; 12386797Sluigi * 12486797Sluigi * The assumption is used in a number of places, including many 12586797Sluigi * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach(). 12686797Sluigi * 12786797Sluigi * Unfortunately devices' softc are opaque, so we depend on this layout 12886797Sluigi * to locate the struct ifnet from the softc in the generic code. 12986797Sluigi * 13084380Smjacob */ 13121259Swollmanstruct ifnet { 13221259Swollman void *if_softc; /* pointer to driver state */ 13360938Sjake TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 134121816Sbrooks char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 135121816Sbrooks const char *if_dname; /* driver name */ 136121816Sbrooks int if_dunit; /* unit or IF_DUNIT_NONE */ 13721259Swollman struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 13883130Sjlemon struct klist if_klist; /* events attached to this if */ 13983130Sjlemon int if_pcount; /* number of promiscuous listeners */ 14021259Swollman struct bpf_if *if_bpf; /* packet filter structure */ 14121259Swollman u_short if_index; /* numeric abbreviation for this if */ 14221259Swollman short if_timer; /* time 'til if_watchdog called */ 143106931Ssam u_short if_nvlans; /* number of active vlans */ 144102052Ssobomax int if_flags; /* up/down, broadcast, etc. */ 14583624Sjlemon int if_capabilities; /* interface capabilities */ 14683624Sjlemon int if_capenable; /* enabled features */ 14721259Swollman int if_ipending; /* interrupts pending */ 14821259Swollman void *if_linkmib; /* link-type-specific MIB data */ 14921259Swollman size_t if_linkmiblen; /* length of above data */ 15021259Swollman struct if_data if_data; 15121404Swollman struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 15221404Swollman int if_amcount; /* number of all-multicast requests */ 15321259Swollman/* procedure handles */ 15421259Swollman int (*if_output) /* output routine (enqueue) */ 15592725Salfred (struct ifnet *, struct mbuf *, struct sockaddr *, 15692725Salfred struct rtentry *); 157106931Ssam void (*if_input) /* input routine (from h/w driver) */ 158106931Ssam (struct ifnet *, struct mbuf *); 15921259Swollman void (*if_start) /* initiate output routine */ 16092725Salfred (struct ifnet *); 16121259Swollman int (*if_done) /* output complete routine */ 16292725Salfred (struct ifnet *); /* (XXX not used; fake prototype) */ 16321259Swollman int (*if_ioctl) /* ioctl routine */ 16492725Salfred (struct ifnet *, u_long, caddr_t); 16521259Swollman void (*if_watchdog) /* timer routine */ 16692725Salfred (struct ifnet *); 16721259Swollman int (*if_poll_recv) /* polled receive routine */ 16892725Salfred (struct ifnet *, int *); 16921259Swollman int (*if_poll_xmit) /* polled transmit routine */ 17092725Salfred (struct ifnet *, int *); 17121259Swollman void (*if_poll_intren) /* polled interrupt reenable routine */ 17292725Salfred (struct ifnet *); 17321259Swollman void (*if_poll_slowinput) /* input routine for slow devices */ 17492725Salfred (struct ifnet *, struct mbuf *); 17521259Swollman void (*if_init) /* Init routine */ 17692725Salfred (void *); 17721404Swollman int (*if_resolvemulti) /* validate/resolve multicast */ 17892725Salfred (struct ifnet *, struct sockaddr **, struct sockaddr *); 17921259Swollman struct ifqueue if_snd; /* output queue */ 18021259Swollman struct ifqueue *if_poll_slowq; /* input queue for slow devices */ 18152904Sshin struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 182123220Simp const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 183122524Srwatson struct label *if_label; /* interface MAC label */ 184121161Sume 185121161Sume void *if_afdata[AF_MAX]; 186121470Sume int if_afdata_initialized; 187121470Sume struct mtx if_afdata_mtx; 18821259Swollman}; 18969152Sjlemon 19092725Salfredtypedef void if_init_f_t(void *); 19121259Swollman 19221259Swollman#define if_mtu if_data.ifi_mtu 19321259Swollman#define if_type if_data.ifi_type 19421259Swollman#define if_physical if_data.ifi_physical 19521259Swollman#define if_addrlen if_data.ifi_addrlen 19621259Swollman#define if_hdrlen if_data.ifi_hdrlen 19721259Swollman#define if_metric if_data.ifi_metric 19821259Swollman#define if_baudrate if_data.ifi_baudrate 19958698Sjlemon#define if_hwassist if_data.ifi_hwassist 20021259Swollman#define if_ipackets if_data.ifi_ipackets 20121259Swollman#define if_ierrors if_data.ifi_ierrors 20221259Swollman#define if_opackets if_data.ifi_opackets 20321259Swollman#define if_oerrors if_data.ifi_oerrors 20421259Swollman#define if_collisions if_data.ifi_collisions 20521259Swollman#define if_ibytes if_data.ifi_ibytes 20621259Swollman#define if_obytes if_data.ifi_obytes 20721259Swollman#define if_imcasts if_data.ifi_imcasts 20821259Swollman#define if_omcasts if_data.ifi_omcasts 20921259Swollman#define if_iqdrops if_data.ifi_iqdrops 21021259Swollman#define if_noproto if_data.ifi_noproto 21121259Swollman#define if_lastchange if_data.ifi_lastchange 21221259Swollman#define if_recvquota if_data.ifi_recvquota 21321259Swollman#define if_xmitquota if_data.ifi_xmitquota 21421259Swollman#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0) 21521259Swollman 21653541Sshin/* for compatibility with other BSDs */ 21753541Sshin#define if_addrlist if_addrhead 21853541Sshin#define if_list if_link 21953541Sshin 22021259Swollman/* 22121259Swollman * Bit values in if_ipending 22221259Swollman */ 22321259Swollman#define IFI_RECV 1 /* I want to receive */ 22421259Swollman#define IFI_XMIT 2 /* I want to transmit */ 22521259Swollman 22621259Swollman/* 22721259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 22821259Swollman * are queues of messages stored on ifqueue structures 22921259Swollman * (defined above). Entries are added to and deleted from these structures 23021259Swollman * by these macros, which should be called with ipl raised to splimp(). 23121259Swollman */ 23272200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 23372200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 23469152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 23569152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 23669152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 23721259Swollman 23869152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 23969152Sjlemon (m)->m_nextpkt = NULL; \ 24069152Sjlemon if ((ifq)->ifq_tail == NULL) \ 24169152Sjlemon (ifq)->ifq_head = m; \ 24269152Sjlemon else \ 24369152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 24469152Sjlemon (ifq)->ifq_tail = m; \ 24569152Sjlemon (ifq)->ifq_len++; \ 24669152Sjlemon} while (0) 24769152Sjlemon 24869152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 24969152Sjlemon IF_LOCK(ifq); \ 25069152Sjlemon _IF_ENQUEUE(ifq, m); \ 25169152Sjlemon IF_UNLOCK(ifq); \ 25269152Sjlemon} while (0) 25369152Sjlemon 25469152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 25569152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 25669152Sjlemon if ((ifq)->ifq_tail == NULL) \ 25769152Sjlemon (ifq)->ifq_tail = (m); \ 25869152Sjlemon (ifq)->ifq_head = (m); \ 25969152Sjlemon (ifq)->ifq_len++; \ 26069152Sjlemon} while (0) 26169152Sjlemon 26269152Sjlemon#define IF_PREPEND(ifq, m) do { \ 26369152Sjlemon IF_LOCK(ifq); \ 26469152Sjlemon _IF_PREPEND(ifq, m); \ 26569152Sjlemon IF_UNLOCK(ifq); \ 26669152Sjlemon} while (0) 26769152Sjlemon 26869152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 26969152Sjlemon (m) = (ifq)->ifq_head; \ 27069152Sjlemon if (m) { \ 27169152Sjlemon if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 27269152Sjlemon (ifq)->ifq_tail = NULL; \ 27369152Sjlemon (m)->m_nextpkt = NULL; \ 27469152Sjlemon (ifq)->ifq_len--; \ 27569152Sjlemon } \ 27669152Sjlemon} while (0) 27769152Sjlemon 27869152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 27969152Sjlemon IF_LOCK(ifq); \ 28069152Sjlemon _IF_DEQUEUE(ifq, m); \ 28169152Sjlemon IF_UNLOCK(ifq); \ 28269152Sjlemon} while (0) 28369152Sjlemon 28469152Sjlemon#define IF_DRAIN(ifq) do { \ 28569152Sjlemon struct mbuf *m; \ 28669152Sjlemon IF_LOCK(ifq); \ 28769152Sjlemon for (;;) { \ 28869152Sjlemon _IF_DEQUEUE(ifq, m); \ 28969152Sjlemon if (m == NULL) \ 29069152Sjlemon break; \ 29169152Sjlemon m_freem(m); \ 29269152Sjlemon } \ 29369152Sjlemon IF_UNLOCK(ifq); \ 29469152Sjlemon} while (0) 29569152Sjlemon 29655205Speter#ifdef _KERNEL 297126264Smlaier/* interface address change event */ 298126264Smlaiertypedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 299126264SmlaierEVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 300126264Smlaier/* new interface arrival event */ 301126264Smlaiertypedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 302126264SmlaierEVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 303126264Smlaier/* interface departure event */ 304126264Smlaiertypedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 305126264SmlaierEVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 306126264Smlaier/* interface clone event */ 307126264Smlaiertypedef void (*if_clone_event_handler_t)(void *, struct if_clone *); 308126264SmlaierEVENTHANDLER_DECLARE(if_clone_event, if_clone_event_handler_t); 309126264Smlaier 310121470Sume#define IF_AFDATA_LOCK_INIT(ifp) \ 311121470Sume mtx_init(&(ifp)->if_afdata_mtx, "if_afdata", NULL, MTX_DEF) 312121470Sume#define IF_AFDATA_LOCK(ifp) mtx_lock(&(ifp)->if_afdata_mtx) 313121470Sume#define IF_AFDATA_TRYLOCK(ifp) mtx_trylock(&(ifp)->if_afdata_mtx) 314121470Sume#define IF_AFDATA_UNLOCK(ifp) mtx_unlock(&(ifp)->if_afdata_mtx) 315121470Sume#define IF_AFDATA_DESTROY(ifp) mtx_destroy(&(ifp)->if_afdata_mtx) 316121470Sume 31769152Sjlemon#define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0) 31869152Sjlemon#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj) 31921259Swollman 32035210Sbdestatic __inline int 32169152Sjlemonif_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust) 32221259Swollman{ 32369152Sjlemon int active = 0; 32421259Swollman 32569152Sjlemon IF_LOCK(ifq); 32669152Sjlemon if (_IF_QFULL(ifq)) { 32769152Sjlemon _IF_DROP(ifq); 32869152Sjlemon IF_UNLOCK(ifq); 32969152Sjlemon m_freem(m); 33069152Sjlemon return (0); 33169152Sjlemon } 33269152Sjlemon if (ifp != NULL) { 33369152Sjlemon ifp->if_obytes += m->m_pkthdr.len + adjust; 33469152Sjlemon if (m->m_flags & M_MCAST) 33569152Sjlemon ifp->if_omcasts++; 33669152Sjlemon active = ifp->if_flags & IFF_OACTIVE; 33769152Sjlemon } 33869152Sjlemon _IF_ENQUEUE(ifq, m); 33969152Sjlemon IF_UNLOCK(ifq); 34086364Sjhb if (ifp != NULL && !active) 34196173Simp (*ifp->if_start)(ifp); 34269152Sjlemon return (1); 34321259Swollman} 34421259Swollman 34549459Sbrian/* 34649459Sbrian * 72 was chosen below because it is the size of a TCP/IP 34749459Sbrian * header (40) + the minimum mss (32). 34849459Sbrian */ 34949459Sbrian#define IF_MINMTU 72 35049459Sbrian#define IF_MAXMTU 65535 35149459Sbrian 35255205Speter#endif /* _KERNEL */ 35321259Swollman 35421259Swollman/* 35521259Swollman * The ifaddr structure contains information about one address 35621259Swollman * of an interface. They are maintained by the different address families, 35721259Swollman * are allocated and attached when an address is set, and are linked 35821259Swollman * together so all addresses for an interface can be located. 35921259Swollman */ 36021259Swollmanstruct ifaddr { 36121259Swollman struct sockaddr *ifa_addr; /* address of interface */ 36221259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 36321259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 36421259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 36567334Sjoe struct if_data if_data; /* not all members are meaningful */ 36621259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 36760938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 36821259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 36992725Salfred (int, struct rtentry *, struct rt_addrinfo *); 37021259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 37147254Spb u_int ifa_refcnt; /* references to this structure */ 37221259Swollman int ifa_metric; /* cost of going out this interface */ 37321259Swollman#ifdef notdef 37421259Swollman struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 37521259Swollman#endif 37628845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 37792725Salfred (struct ifaddr *, struct sockaddr *); 378108033Shsu struct mtx ifa_mtx; 37921259Swollman}; 38021259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 38121259Swollman 38253541Sshin/* for compatibility with other BSDs */ 38353541Sshin#define ifa_list ifa_link 38453541Sshin 385108033Shsu#define IFA_LOCK_INIT(ifa) \ 386108033Shsu mtx_init(&(ifa)->ifa_mtx, "ifaddr", NULL, MTX_DEF) 387108033Shsu#define IFA_LOCK(ifa) mtx_lock(&(ifa)->ifa_mtx) 388108033Shsu#define IFA_UNLOCK(ifa) mtx_unlock(&(ifa)->ifa_mtx) 389108033Shsu#define IFA_DESTROY(ifa) mtx_destroy(&(ifa)->ifa_mtx) 390108033Shsu 39121404Swollman/* 39252904Sshin * The prefix structure contains information about one prefix 39352904Sshin * of an interface. They are maintained by the different address families, 394108470Sschweikh * are allocated and attached when a prefix or an address is set, 39553541Sshin * and are linked together so all prefixes for an interface can be located. 39652904Sshin */ 39752904Sshinstruct ifprefix { 39852904Sshin struct sockaddr *ifpr_prefix; /* prefix of interface */ 39952904Sshin struct ifnet *ifpr_ifp; /* back-pointer to interface */ 40060938Sjake TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 40152904Sshin u_char ifpr_plen; /* prefix length in bits */ 40252904Sshin u_char ifpr_type; /* protocol dependent prefix type */ 40352904Sshin}; 40452904Sshin 40552904Sshin/* 40621404Swollman * Multicast address structure. This is analogous to the ifaddr 40721404Swollman * structure except that it keeps track of multicast addresses. 40821404Swollman * Also, the reference count here is a count of requests for this 40921404Swollman * address, not a count of pointers to this structure. 41021404Swollman */ 41121404Swollmanstruct ifmultiaddr { 41272084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 41321434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 41421434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 41521434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 41621434Swollman u_int ifma_refcount; /* reference count */ 41721434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 41821404Swollman}; 41921404Swollman 42055205Speter#ifdef _KERNEL 421108036Shsu#define IFAFREE(ifa) \ 422108036Shsu do { \ 423108036Shsu IFA_LOCK(ifa); \ 424108036Shsu KASSERT((ifa)->ifa_refcnt > 0, \ 425108036Shsu ("ifa %p !(ifa_refcnt > 0)", ifa)); \ 426108036Shsu if (--(ifa)->ifa_refcnt == 0) { \ 427108036Shsu IFA_DESTROY(ifa); \ 428108036Shsu free(ifa, M_IFADDR); \ 429108036Shsu } else \ 430108036Shsu IFA_UNLOCK(ifa); \ 43146568Speter } while (0) 43221259Swollman 433108036Shsu#define IFAREF(ifa) \ 434108036Shsu do { \ 435108036Shsu IFA_LOCK(ifa); \ 436108036Shsu ++(ifa)->ifa_refcnt; \ 437108036Shsu IFA_UNLOCK(ifa); \ 438108033Shsu } while (0) 439108033Shsu 440108172Shsuextern struct mtx ifnet_lock; 441108298Shsu#define IFNET_LOCK_INIT() \ 442108298Shsu mtx_init(&ifnet_lock, "ifnet", NULL, MTX_DEF | MTX_RECURSE) 443108172Shsu#define IFNET_WLOCK() mtx_lock(&ifnet_lock) 444108172Shsu#define IFNET_WUNLOCK() mtx_unlock(&ifnet_lock) 445108172Shsu#define IFNET_RLOCK() IFNET_WLOCK() 446108172Shsu#define IFNET_RUNLOCK() IFNET_WUNLOCK() 447108172Shsu 44883130Sjlemonstruct ifindex_entry { 44987914Sjlemon struct ifnet *ife_ifnet; 45083130Sjlemon struct ifaddr *ife_ifnet_addr; 45183130Sjlemon dev_t ife_dev; 45283130Sjlemon}; 45383130Sjlemon 45483130Sjlemon#define ifnet_byindex(idx) ifindex_table[(idx)].ife_ifnet 45583130Sjlemon#define ifaddr_byindex(idx) ifindex_table[(idx)].ife_ifnet_addr 45683130Sjlemon#define ifdev_byindex(idx) ifindex_table[(idx)].ife_dev 45783130Sjlemon 45821259Swollmanextern struct ifnethead ifnet; 45983130Sjlemonextern struct ifindex_entry *ifindex_table; 46021259Swollmanextern int ifqmaxlen; 46171791Speterextern struct ifnet *loif; /* first loopback interface */ 46221259Swollmanextern int if_index; 46321259Swollman 46492725Salfredint if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 46592725Salfredint if_allmulti(struct ifnet *, int); 46692725Salfredvoid if_attach(struct ifnet *); 46792725Salfredint if_delmulti(struct ifnet *, struct sockaddr *); 46892725Salfredvoid if_detach(struct ifnet *); 46992725Salfredvoid if_down(struct ifnet *); 470121816Sbrooksvoid if_initname(struct ifnet *, const char *, int); 471103900Sbrooksint if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 47292725Salfredvoid if_route(struct ifnet *, int flag, int fam); 47392725Salfredint if_setlladdr(struct ifnet *, const u_char *, int); 47492725Salfredvoid if_unroute(struct ifnet *, int flag, int fam); 47592725Salfredvoid if_up(struct ifnet *); 47692725Salfred/*void ifinit(void);*/ /* declared in systm.h for main() */ 47792725Salfredint ifioctl(struct socket *, u_long, caddr_t, struct thread *); 47892725Salfredint ifpromisc(struct ifnet *, int); 47992725Salfredstruct ifnet *ifunit(const char *); 48092725Salfredstruct ifnet *if_withname(struct sockaddr *); 48121259Swollman 48292725Salfredint if_poll_recv_slow(struct ifnet *ifp, int *quotap); 48392725Salfredvoid if_poll_xmit_slow(struct ifnet *ifp, int *quotap); 48492725Salfredvoid if_poll_throttle(void); 48592725Salfredvoid if_poll_unthrottle(void *); 48692725Salfredvoid if_poll_init(void); 48792725Salfredvoid if_poll(void); 48821259Swollman 48992725Salfredstruct ifaddr *ifa_ifwithaddr(struct sockaddr *); 49092725Salfredstruct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 49192725Salfredstruct ifaddr *ifa_ifwithnet(struct sockaddr *); 49292725Salfredstruct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 49392725Salfredstruct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 49421259Swollman 49592725Salfredstruct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *); 49692725Salfredint if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 49721434Swollman 49892725Salfredvoid if_clone_attach(struct if_clone *); 49992725Salfredvoid if_clone_detach(struct if_clone *); 50079103Sbrooks 50192725Salfredint if_clone_create(char *, int); 50292725Salfredint if_clone_destroy(const char *); 50379103Sbrooks 50484931Sfjoe#define IF_LLADDR(ifp) \ 50584931Sfjoe LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr) 50684931Sfjoe 50787902Sluigi#ifdef DEVICE_POLLING 50887902Sluigienum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER }; 50987902Sluigi 51092725Salfredtypedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); 51192725Salfredint ether_poll_register(poll_handler_t *h, struct ifnet *ifp); 51292725Salfredint ether_poll_deregister(struct ifnet *ifp); 51387902Sluigi#endif /* DEVICE_POLLING */ 51487902Sluigi 51555205Speter#endif /* _KERNEL */ 51621259Swollman 51721259Swollman#endif /* !_NET_IF_VAR_H_ */ 518