ifq.h revision 127828
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 127828 2004-04-04 06:14:55Z luigi $ 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_ioctl) /* ioctl routine */ 16292725Salfred (struct ifnet *, u_long, caddr_t); 16321259Swollman void (*if_watchdog) /* timer routine */ 16492725Salfred (struct ifnet *); 16521259Swollman void (*if_init) /* Init routine */ 16692725Salfred (void *); 16721404Swollman int (*if_resolvemulti) /* validate/resolve multicast */ 16892725Salfred (struct ifnet *, struct sockaddr **, struct sockaddr *); 16921259Swollman struct ifqueue if_snd; /* output queue */ 170123220Simp const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 171127828Sluigi 172127828Sluigi struct lltable *lltables; /* list of L3-L2 resolution tables */ 173127828Sluigi 174122524Srwatson struct label *if_label; /* interface MAC label */ 175121161Sume 176127828Sluigi /* these are only used by IPv6 */ 177127828Sluigi struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 178121161Sume void *if_afdata[AF_MAX]; 179121470Sume int if_afdata_initialized; 180121470Sume struct mtx if_afdata_mtx; 18121259Swollman}; 18269152Sjlemon 18392725Salfredtypedef void if_init_f_t(void *); 18421259Swollman 18521259Swollman#define if_mtu if_data.ifi_mtu 18621259Swollman#define if_type if_data.ifi_type 18721259Swollman#define if_physical if_data.ifi_physical 18821259Swollman#define if_addrlen if_data.ifi_addrlen 18921259Swollman#define if_hdrlen if_data.ifi_hdrlen 19021259Swollman#define if_metric if_data.ifi_metric 19121259Swollman#define if_baudrate if_data.ifi_baudrate 19258698Sjlemon#define if_hwassist if_data.ifi_hwassist 19321259Swollman#define if_ipackets if_data.ifi_ipackets 19421259Swollman#define if_ierrors if_data.ifi_ierrors 19521259Swollman#define if_opackets if_data.ifi_opackets 19621259Swollman#define if_oerrors if_data.ifi_oerrors 19721259Swollman#define if_collisions if_data.ifi_collisions 19821259Swollman#define if_ibytes if_data.ifi_ibytes 19921259Swollman#define if_obytes if_data.ifi_obytes 20021259Swollman#define if_imcasts if_data.ifi_imcasts 20121259Swollman#define if_omcasts if_data.ifi_omcasts 20221259Swollman#define if_iqdrops if_data.ifi_iqdrops 20321259Swollman#define if_noproto if_data.ifi_noproto 20421259Swollman#define if_lastchange if_data.ifi_lastchange 20521259Swollman#define if_recvquota if_data.ifi_recvquota 20621259Swollman#define if_xmitquota if_data.ifi_xmitquota 20721259Swollman#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0) 20821259Swollman 20953541Sshin/* for compatibility with other BSDs */ 21053541Sshin#define if_addrlist if_addrhead 21153541Sshin#define if_list if_link 21253541Sshin 21321259Swollman/* 21421259Swollman * Bit values in if_ipending 21521259Swollman */ 21621259Swollman#define IFI_RECV 1 /* I want to receive */ 21721259Swollman#define IFI_XMIT 2 /* I want to transmit */ 21821259Swollman 21921259Swollman/* 22021259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 22121259Swollman * are queues of messages stored on ifqueue structures 22221259Swollman * (defined above). Entries are added to and deleted from these structures 22321259Swollman * by these macros, which should be called with ipl raised to splimp(). 22421259Swollman */ 22572200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 22672200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 22769152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 22869152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 22969152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 23021259Swollman 23169152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 23269152Sjlemon (m)->m_nextpkt = NULL; \ 23369152Sjlemon if ((ifq)->ifq_tail == NULL) \ 23469152Sjlemon (ifq)->ifq_head = m; \ 23569152Sjlemon else \ 23669152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 23769152Sjlemon (ifq)->ifq_tail = m; \ 23869152Sjlemon (ifq)->ifq_len++; \ 23969152Sjlemon} while (0) 24069152Sjlemon 24169152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 24269152Sjlemon IF_LOCK(ifq); \ 24369152Sjlemon _IF_ENQUEUE(ifq, m); \ 24469152Sjlemon IF_UNLOCK(ifq); \ 24569152Sjlemon} while (0) 24669152Sjlemon 24769152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 24869152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 24969152Sjlemon if ((ifq)->ifq_tail == NULL) \ 25069152Sjlemon (ifq)->ifq_tail = (m); \ 25169152Sjlemon (ifq)->ifq_head = (m); \ 25269152Sjlemon (ifq)->ifq_len++; \ 25369152Sjlemon} while (0) 25469152Sjlemon 25569152Sjlemon#define IF_PREPEND(ifq, m) do { \ 25669152Sjlemon IF_LOCK(ifq); \ 25769152Sjlemon _IF_PREPEND(ifq, m); \ 25869152Sjlemon IF_UNLOCK(ifq); \ 25969152Sjlemon} while (0) 26069152Sjlemon 26169152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 26269152Sjlemon (m) = (ifq)->ifq_head; \ 26369152Sjlemon if (m) { \ 26469152Sjlemon if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 26569152Sjlemon (ifq)->ifq_tail = NULL; \ 26669152Sjlemon (m)->m_nextpkt = NULL; \ 26769152Sjlemon (ifq)->ifq_len--; \ 26869152Sjlemon } \ 26969152Sjlemon} while (0) 27069152Sjlemon 27169152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 27269152Sjlemon IF_LOCK(ifq); \ 27369152Sjlemon _IF_DEQUEUE(ifq, m); \ 27469152Sjlemon IF_UNLOCK(ifq); \ 27569152Sjlemon} while (0) 27669152Sjlemon 27769152Sjlemon#define IF_DRAIN(ifq) do { \ 27869152Sjlemon struct mbuf *m; \ 27969152Sjlemon IF_LOCK(ifq); \ 28069152Sjlemon for (;;) { \ 28169152Sjlemon _IF_DEQUEUE(ifq, m); \ 28269152Sjlemon if (m == NULL) \ 28369152Sjlemon break; \ 28469152Sjlemon m_freem(m); \ 28569152Sjlemon } \ 28669152Sjlemon IF_UNLOCK(ifq); \ 28769152Sjlemon} while (0) 28869152Sjlemon 28955205Speter#ifdef _KERNEL 290126264Smlaier/* interface address change event */ 291126264Smlaiertypedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 292126264SmlaierEVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 293126264Smlaier/* new interface arrival event */ 294126264Smlaiertypedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 295126264SmlaierEVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 296126264Smlaier/* interface departure event */ 297126264Smlaiertypedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 298126264SmlaierEVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 299126264Smlaier/* interface clone event */ 300126264Smlaiertypedef void (*if_clone_event_handler_t)(void *, struct if_clone *); 301126264SmlaierEVENTHANDLER_DECLARE(if_clone_event, if_clone_event_handler_t); 302126264Smlaier 303121470Sume#define IF_AFDATA_LOCK_INIT(ifp) \ 304121470Sume mtx_init(&(ifp)->if_afdata_mtx, "if_afdata", NULL, MTX_DEF) 305121470Sume#define IF_AFDATA_LOCK(ifp) mtx_lock(&(ifp)->if_afdata_mtx) 306121470Sume#define IF_AFDATA_TRYLOCK(ifp) mtx_trylock(&(ifp)->if_afdata_mtx) 307121470Sume#define IF_AFDATA_UNLOCK(ifp) mtx_unlock(&(ifp)->if_afdata_mtx) 308121470Sume#define IF_AFDATA_DESTROY(ifp) mtx_destroy(&(ifp)->if_afdata_mtx) 309121470Sume 31069152Sjlemon#define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0) 31169152Sjlemon#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj) 31221259Swollman 31335210Sbdestatic __inline int 31469152Sjlemonif_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust) 31521259Swollman{ 31669152Sjlemon int active = 0; 31721259Swollman 31869152Sjlemon IF_LOCK(ifq); 31969152Sjlemon if (_IF_QFULL(ifq)) { 32069152Sjlemon _IF_DROP(ifq); 32169152Sjlemon IF_UNLOCK(ifq); 32269152Sjlemon m_freem(m); 32369152Sjlemon return (0); 32469152Sjlemon } 32569152Sjlemon if (ifp != NULL) { 32669152Sjlemon ifp->if_obytes += m->m_pkthdr.len + adjust; 32769152Sjlemon if (m->m_flags & M_MCAST) 32869152Sjlemon ifp->if_omcasts++; 32969152Sjlemon active = ifp->if_flags & IFF_OACTIVE; 33069152Sjlemon } 33169152Sjlemon _IF_ENQUEUE(ifq, m); 33269152Sjlemon IF_UNLOCK(ifq); 33386364Sjhb if (ifp != NULL && !active) 33496173Simp (*ifp->if_start)(ifp); 33569152Sjlemon return (1); 33621259Swollman} 33721259Swollman 33849459Sbrian/* 33949459Sbrian * 72 was chosen below because it is the size of a TCP/IP 34049459Sbrian * header (40) + the minimum mss (32). 34149459Sbrian */ 34249459Sbrian#define IF_MINMTU 72 34349459Sbrian#define IF_MAXMTU 65535 34449459Sbrian 34555205Speter#endif /* _KERNEL */ 34621259Swollman 34721259Swollman/* 34821259Swollman * The ifaddr structure contains information about one address 34921259Swollman * of an interface. They are maintained by the different address families, 35021259Swollman * are allocated and attached when an address is set, and are linked 35121259Swollman * together so all addresses for an interface can be located. 35221259Swollman */ 35321259Swollmanstruct ifaddr { 35421259Swollman struct sockaddr *ifa_addr; /* address of interface */ 35521259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 35621259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 35721259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 35867334Sjoe struct if_data if_data; /* not all members are meaningful */ 35921259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 36060938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 36121259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 36292725Salfred (int, struct rtentry *, struct rt_addrinfo *); 36321259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 36447254Spb u_int ifa_refcnt; /* references to this structure */ 36521259Swollman int ifa_metric; /* cost of going out this interface */ 36621259Swollman#ifdef notdef 36721259Swollman struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 36821259Swollman#endif 36928845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 37092725Salfred (struct ifaddr *, struct sockaddr *); 371108033Shsu struct mtx ifa_mtx; 37221259Swollman}; 37321259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 37421259Swollman 37553541Sshin/* for compatibility with other BSDs */ 37653541Sshin#define ifa_list ifa_link 37753541Sshin 378108033Shsu#define IFA_LOCK_INIT(ifa) \ 379108033Shsu mtx_init(&(ifa)->ifa_mtx, "ifaddr", NULL, MTX_DEF) 380108033Shsu#define IFA_LOCK(ifa) mtx_lock(&(ifa)->ifa_mtx) 381108033Shsu#define IFA_UNLOCK(ifa) mtx_unlock(&(ifa)->ifa_mtx) 382108033Shsu#define IFA_DESTROY(ifa) mtx_destroy(&(ifa)->ifa_mtx) 383108033Shsu 38421404Swollman/* 38552904Sshin * The prefix structure contains information about one prefix 38652904Sshin * of an interface. They are maintained by the different address families, 387108470Sschweikh * are allocated and attached when a prefix or an address is set, 38853541Sshin * and are linked together so all prefixes for an interface can be located. 38952904Sshin */ 39052904Sshinstruct ifprefix { 39152904Sshin struct sockaddr *ifpr_prefix; /* prefix of interface */ 39252904Sshin struct ifnet *ifpr_ifp; /* back-pointer to interface */ 39360938Sjake TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 39452904Sshin u_char ifpr_plen; /* prefix length in bits */ 39552904Sshin u_char ifpr_type; /* protocol dependent prefix type */ 39652904Sshin}; 39752904Sshin 39852904Sshin/* 39921404Swollman * Multicast address structure. This is analogous to the ifaddr 40021404Swollman * structure except that it keeps track of multicast addresses. 40121404Swollman * Also, the reference count here is a count of requests for this 40221404Swollman * address, not a count of pointers to this structure. 40321404Swollman */ 40421404Swollmanstruct ifmultiaddr { 40572084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 40621434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 40721434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 40821434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 40921434Swollman u_int ifma_refcount; /* reference count */ 41021434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 41121404Swollman}; 41221404Swollman 41355205Speter#ifdef _KERNEL 414108036Shsu#define IFAFREE(ifa) \ 415108036Shsu do { \ 416108036Shsu IFA_LOCK(ifa); \ 417108036Shsu KASSERT((ifa)->ifa_refcnt > 0, \ 418108036Shsu ("ifa %p !(ifa_refcnt > 0)", ifa)); \ 419108036Shsu if (--(ifa)->ifa_refcnt == 0) { \ 420108036Shsu IFA_DESTROY(ifa); \ 421108036Shsu free(ifa, M_IFADDR); \ 422108036Shsu } else \ 423108036Shsu IFA_UNLOCK(ifa); \ 42446568Speter } while (0) 42521259Swollman 426108036Shsu#define IFAREF(ifa) \ 427108036Shsu do { \ 428108036Shsu IFA_LOCK(ifa); \ 429108036Shsu ++(ifa)->ifa_refcnt; \ 430108036Shsu IFA_UNLOCK(ifa); \ 431108033Shsu } while (0) 432108033Shsu 433108172Shsuextern struct mtx ifnet_lock; 434108298Shsu#define IFNET_LOCK_INIT() \ 435108298Shsu mtx_init(&ifnet_lock, "ifnet", NULL, MTX_DEF | MTX_RECURSE) 436108172Shsu#define IFNET_WLOCK() mtx_lock(&ifnet_lock) 437108172Shsu#define IFNET_WUNLOCK() mtx_unlock(&ifnet_lock) 438108172Shsu#define IFNET_RLOCK() IFNET_WLOCK() 439108172Shsu#define IFNET_RUNLOCK() IFNET_WUNLOCK() 440108172Shsu 44183130Sjlemonstruct ifindex_entry { 44287914Sjlemon struct ifnet *ife_ifnet; 44383130Sjlemon struct ifaddr *ife_ifnet_addr; 44483130Sjlemon dev_t ife_dev; 44583130Sjlemon}; 44683130Sjlemon 44783130Sjlemon#define ifnet_byindex(idx) ifindex_table[(idx)].ife_ifnet 44883130Sjlemon#define ifaddr_byindex(idx) ifindex_table[(idx)].ife_ifnet_addr 44983130Sjlemon#define ifdev_byindex(idx) ifindex_table[(idx)].ife_dev 45083130Sjlemon 45121259Swollmanextern struct ifnethead ifnet; 45283130Sjlemonextern struct ifindex_entry *ifindex_table; 45321259Swollmanextern int ifqmaxlen; 45471791Speterextern struct ifnet *loif; /* first loopback interface */ 45521259Swollmanextern int if_index; 45621259Swollman 45792725Salfredint if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 45892725Salfredint if_allmulti(struct ifnet *, int); 45992725Salfredvoid if_attach(struct ifnet *); 46092725Salfredint if_delmulti(struct ifnet *, struct sockaddr *); 46192725Salfredvoid if_detach(struct ifnet *); 46292725Salfredvoid if_down(struct ifnet *); 463121816Sbrooksvoid if_initname(struct ifnet *, const char *, int); 464103900Sbrooksint if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 46592725Salfredvoid if_route(struct ifnet *, int flag, int fam); 46692725Salfredint if_setlladdr(struct ifnet *, const u_char *, int); 46792725Salfredvoid if_unroute(struct ifnet *, int flag, int fam); 46892725Salfredvoid if_up(struct ifnet *); 46992725Salfred/*void ifinit(void);*/ /* declared in systm.h for main() */ 47092725Salfredint ifioctl(struct socket *, u_long, caddr_t, struct thread *); 47192725Salfredint ifpromisc(struct ifnet *, int); 47292725Salfredstruct ifnet *ifunit(const char *); 47321259Swollman 47492725Salfredstruct ifaddr *ifa_ifwithaddr(struct sockaddr *); 47592725Salfredstruct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 47692725Salfredstruct ifaddr *ifa_ifwithnet(struct sockaddr *); 47792725Salfredstruct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 47892725Salfredstruct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 47921259Swollman 48092725Salfredstruct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *); 48192725Salfredint if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 48221434Swollman 48392725Salfredvoid if_clone_attach(struct if_clone *); 48492725Salfredvoid if_clone_detach(struct if_clone *); 48579103Sbrooks 48692725Salfredint if_clone_create(char *, int); 48792725Salfredint if_clone_destroy(const char *); 48879103Sbrooks 48984931Sfjoe#define IF_LLADDR(ifp) \ 49084931Sfjoe LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr) 49184931Sfjoe 49287902Sluigi#ifdef DEVICE_POLLING 49387902Sluigienum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER }; 49487902Sluigi 49592725Salfredtypedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); 49692725Salfredint ether_poll_register(poll_handler_t *h, struct ifnet *ifp); 49792725Salfredint ether_poll_deregister(struct ifnet *ifp); 49887902Sluigi#endif /* DEVICE_POLLING */ 49987902Sluigi 50055205Speter#endif /* _KERNEL */ 50121259Swollman 50221259Swollman#endif /* !_NET_IF_VAR_H_ */ 503