if_var.h revision 79103
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 79103 2001-07-02 20:49:25Z brooks $ 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 5521259Swollman * places it on the input queue of a 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 6021259Swollman * or for locating a 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; 7021259Swollmanstruct proc; 7121259Swollmanstruct rtentry; 7221259Swollmanstruct socket; 7321259Swollmanstruct ether_header; 7421259Swollman#endif 7521259Swollman 7621259Swollman#include <sys/queue.h> /* get TAILQ macros */ 7721259Swollman 7869224Sjlemon#ifdef _KERNEL 7969152Sjlemon#include <sys/mbuf.h> 8074914Sjhb#include <sys/systm.h> /* XXX */ 8169224Sjlemon#endif /* _KERNEL */ 8274914Sjhb#include <sys/lock.h> /* XXX */ 8374914Sjhb#include <sys/mutex.h> /* XXX */ 8469152Sjlemon 8560938SjakeTAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 8660938SjakeTAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 8760938SjakeTAILQ_HEAD(ifprefixhead, ifprefix); 8872084SphkTAILQ_HEAD(ifmultihead, ifmultiaddr); 8921259Swollman 9021259Swollman/* 9121259Swollman * Structure defining a queue for a network interface. 9221259Swollman */ 9321259Swollmanstruct ifqueue { 9421259Swollman struct mbuf *ifq_head; 9521259Swollman struct mbuf *ifq_tail; 9621259Swollman int ifq_len; 9721259Swollman int ifq_maxlen; 9821259Swollman int ifq_drops; 9969152Sjlemon struct mtx ifq_mtx; 10021259Swollman}; 10121259Swollman 10221259Swollman/* 10321259Swollman * Structure defining a network interface. 10421259Swollman * 10521259Swollman * (Would like to call this struct ``if'', but C isn't PL/1.) 10621259Swollman */ 10721259Swollmanstruct ifnet { 10821259Swollman void *if_softc; /* pointer to driver state */ 10921259Swollman char *if_name; /* name, e.g. ``en'' or ``lo'' */ 11060938Sjake TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 11121259Swollman struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 11221259Swollman int if_pcount; /* number of promiscuous listeners */ 11321259Swollman struct bpf_if *if_bpf; /* packet filter structure */ 11421259Swollman u_short if_index; /* numeric abbreviation for this if */ 11521259Swollman short if_unit; /* sub-unit for lower level driver */ 11621259Swollman short if_timer; /* time 'til if_watchdog called */ 11721259Swollman short if_flags; /* up/down, broadcast, etc. */ 11869152Sjlemon int if_mpsafe; /* XXX TEMPORARY */ 11921259Swollman int if_ipending; /* interrupts pending */ 12021259Swollman void *if_linkmib; /* link-type-specific MIB data */ 12121259Swollman size_t if_linkmiblen; /* length of above data */ 12221259Swollman struct if_data if_data; 12321404Swollman struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 12421404Swollman int if_amcount; /* number of all-multicast requests */ 12521259Swollman/* procedure handles */ 12621259Swollman int (*if_output) /* output routine (enqueue) */ 12721259Swollman __P((struct ifnet *, struct mbuf *, struct sockaddr *, 12821259Swollman struct rtentry *)); 12921259Swollman void (*if_start) /* initiate output routine */ 13021259Swollman __P((struct ifnet *)); 13121259Swollman int (*if_done) /* output complete routine */ 13221259Swollman __P((struct ifnet *)); /* (XXX not used; fake prototype) */ 13321259Swollman int (*if_ioctl) /* ioctl routine */ 13436735Sdfr __P((struct ifnet *, u_long, caddr_t)); 13521259Swollman void (*if_watchdog) /* timer routine */ 13621259Swollman __P((struct ifnet *)); 13721259Swollman int (*if_poll_recv) /* polled receive routine */ 13821259Swollman __P((struct ifnet *, int *)); 13921259Swollman int (*if_poll_xmit) /* polled transmit routine */ 14021259Swollman __P((struct ifnet *, int *)); 14121259Swollman void (*if_poll_intren) /* polled interrupt reenable routine */ 14221259Swollman __P((struct ifnet *)); 14321259Swollman void (*if_poll_slowinput) /* input routine for slow devices */ 14421259Swollman __P((struct ifnet *, struct mbuf *)); 14521259Swollman void (*if_init) /* Init routine */ 14621259Swollman __P((void *)); 14721404Swollman int (*if_resolvemulti) /* validate/resolve multicast */ 14821404Swollman __P((struct ifnet *, struct sockaddr **, struct sockaddr *)); 14921259Swollman struct ifqueue if_snd; /* output queue */ 15021259Swollman struct ifqueue *if_poll_slowq; /* input queue for slow devices */ 15152904Sshin struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 15221259Swollman}; 15369152Sjlemon 15421259Swollmantypedef void if_init_f_t __P((void *)); 15521259Swollman 15621259Swollman#define if_mtu if_data.ifi_mtu 15721259Swollman#define if_type if_data.ifi_type 15821259Swollman#define if_physical if_data.ifi_physical 15921259Swollman#define if_addrlen if_data.ifi_addrlen 16021259Swollman#define if_hdrlen if_data.ifi_hdrlen 16121259Swollman#define if_metric if_data.ifi_metric 16221259Swollman#define if_baudrate if_data.ifi_baudrate 16358698Sjlemon#define if_hwassist if_data.ifi_hwassist 16421259Swollman#define if_ipackets if_data.ifi_ipackets 16521259Swollman#define if_ierrors if_data.ifi_ierrors 16621259Swollman#define if_opackets if_data.ifi_opackets 16721259Swollman#define if_oerrors if_data.ifi_oerrors 16821259Swollman#define if_collisions if_data.ifi_collisions 16921259Swollman#define if_ibytes if_data.ifi_ibytes 17021259Swollman#define if_obytes if_data.ifi_obytes 17121259Swollman#define if_imcasts if_data.ifi_imcasts 17221259Swollman#define if_omcasts if_data.ifi_omcasts 17321259Swollman#define if_iqdrops if_data.ifi_iqdrops 17421259Swollman#define if_noproto if_data.ifi_noproto 17521259Swollman#define if_lastchange if_data.ifi_lastchange 17621259Swollman#define if_recvquota if_data.ifi_recvquota 17721259Swollman#define if_xmitquota if_data.ifi_xmitquota 17821259Swollman#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0) 17921259Swollman 18053541Sshin/* for compatibility with other BSDs */ 18153541Sshin#define if_addrlist if_addrhead 18253541Sshin#define if_list if_link 18353541Sshin 18421259Swollman/* 18521259Swollman * Bit values in if_ipending 18621259Swollman */ 18721259Swollman#define IFI_RECV 1 /* I want to receive */ 18821259Swollman#define IFI_XMIT 2 /* I want to transmit */ 18921259Swollman 19021259Swollman/* 19121259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 19221259Swollman * are queues of messages stored on ifqueue structures 19321259Swollman * (defined above). Entries are added to and deleted from these structures 19421259Swollman * by these macros, which should be called with ipl raised to splimp(). 19521259Swollman */ 19672200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 19772200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 19869152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 19969152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 20069152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 20121259Swollman 20269152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 20369152Sjlemon (m)->m_nextpkt = NULL; \ 20469152Sjlemon if ((ifq)->ifq_tail == NULL) \ 20569152Sjlemon (ifq)->ifq_head = m; \ 20669152Sjlemon else \ 20769152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 20869152Sjlemon (ifq)->ifq_tail = m; \ 20969152Sjlemon (ifq)->ifq_len++; \ 21069152Sjlemon} while (0) 21169152Sjlemon 21269152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 21369152Sjlemon IF_LOCK(ifq); \ 21469152Sjlemon _IF_ENQUEUE(ifq, m); \ 21569152Sjlemon IF_UNLOCK(ifq); \ 21669152Sjlemon} while (0) 21769152Sjlemon 21869152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 21969152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 22069152Sjlemon if ((ifq)->ifq_tail == NULL) \ 22169152Sjlemon (ifq)->ifq_tail = (m); \ 22269152Sjlemon (ifq)->ifq_head = (m); \ 22369152Sjlemon (ifq)->ifq_len++; \ 22469152Sjlemon} while (0) 22569152Sjlemon 22669152Sjlemon#define IF_PREPEND(ifq, m) do { \ 22769152Sjlemon IF_LOCK(ifq); \ 22869152Sjlemon _IF_PREPEND(ifq, m); \ 22969152Sjlemon IF_UNLOCK(ifq); \ 23069152Sjlemon} while (0) 23169152Sjlemon 23269152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 23369152Sjlemon (m) = (ifq)->ifq_head; \ 23469152Sjlemon if (m) { \ 23569152Sjlemon if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 23669152Sjlemon (ifq)->ifq_tail = NULL; \ 23769152Sjlemon (m)->m_nextpkt = NULL; \ 23869152Sjlemon (ifq)->ifq_len--; \ 23969152Sjlemon } \ 24069152Sjlemon} while (0) 24169152Sjlemon 24269152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 24369152Sjlemon IF_LOCK(ifq); \ 24469152Sjlemon _IF_DEQUEUE(ifq, m); \ 24569152Sjlemon IF_UNLOCK(ifq); \ 24669152Sjlemon} while (0) 24769152Sjlemon 24869152Sjlemon#define IF_DRAIN(ifq) do { \ 24969152Sjlemon struct mbuf *m; \ 25069152Sjlemon IF_LOCK(ifq); \ 25169152Sjlemon for (;;) { \ 25269152Sjlemon _IF_DEQUEUE(ifq, m); \ 25369152Sjlemon if (m == NULL) \ 25469152Sjlemon break; \ 25569152Sjlemon m_freem(m); \ 25669152Sjlemon } \ 25769152Sjlemon IF_UNLOCK(ifq); \ 25869152Sjlemon} while (0) 25969152Sjlemon 26055205Speter#ifdef _KERNEL 26169152Sjlemon#define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0) 26269152Sjlemon#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj) 26321259Swollman 26435210Sbdestatic __inline int 26569152Sjlemonif_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust) 26621259Swollman{ 26769152Sjlemon int active = 0; 26821259Swollman 26969152Sjlemon IF_LOCK(ifq); 27069152Sjlemon if (_IF_QFULL(ifq)) { 27169152Sjlemon _IF_DROP(ifq); 27269152Sjlemon IF_UNLOCK(ifq); 27369152Sjlemon m_freem(m); 27469152Sjlemon return (0); 27569152Sjlemon } 27669152Sjlemon if (ifp != NULL) { 27769152Sjlemon ifp->if_obytes += m->m_pkthdr.len + adjust; 27869152Sjlemon if (m->m_flags & M_MCAST) 27969152Sjlemon ifp->if_omcasts++; 28069152Sjlemon active = ifp->if_flags & IFF_OACTIVE; 28169152Sjlemon } 28269152Sjlemon _IF_ENQUEUE(ifq, m); 28369152Sjlemon IF_UNLOCK(ifq); 28469152Sjlemon if (ifp != NULL && !active) { 28569152Sjlemon if (ifp->if_mpsafe) { 28669152Sjlemon DROP_GIANT_NOSWITCH(); 28769152Sjlemon (*ifp->if_start)(ifp); 28869152Sjlemon PICKUP_GIANT(); 28969152Sjlemon } else { 29069152Sjlemon (*ifp->if_start)(ifp); 29169152Sjlemon } 29269152Sjlemon } 29369152Sjlemon return (1); 29421259Swollman} 29521259Swollman 29649459Sbrian/* 29749459Sbrian * 72 was chosen below because it is the size of a TCP/IP 29849459Sbrian * header (40) + the minimum mss (32). 29949459Sbrian */ 30049459Sbrian#define IF_MINMTU 72 30149459Sbrian#define IF_MAXMTU 65535 30249459Sbrian 30355205Speter#endif /* _KERNEL */ 30421259Swollman 30521259Swollman/* 30621259Swollman * The ifaddr structure contains information about one address 30721259Swollman * of an interface. They are maintained by the different address families, 30821259Swollman * are allocated and attached when an address is set, and are linked 30921259Swollman * together so all addresses for an interface can be located. 31021259Swollman */ 31121259Swollmanstruct ifaddr { 31221259Swollman struct sockaddr *ifa_addr; /* address of interface */ 31321259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 31421259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 31521259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 31667334Sjoe struct if_data if_data; /* not all members are meaningful */ 31721259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 31860938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 31921259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 32021259Swollman __P((int, struct rtentry *, struct sockaddr *)); 32121259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 32247254Spb u_int ifa_refcnt; /* references to this structure */ 32321259Swollman int ifa_metric; /* cost of going out this interface */ 32421259Swollman#ifdef notdef 32521259Swollman struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 32621259Swollman#endif 32728845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 32828845Sjulian __P((struct ifaddr *, struct sockaddr *)); 32928845Sjulian 33021259Swollman}; 33121259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 33221259Swollman 33353541Sshin/* for compatibility with other BSDs */ 33453541Sshin#define ifa_list ifa_link 33553541Sshin 33621404Swollman/* 33752904Sshin * The prefix structure contains information about one prefix 33852904Sshin * of an interface. They are maintained by the different address families, 33952904Sshin * are allocated and attached when an prefix or an address is set, 34053541Sshin * and are linked together so all prefixes for an interface can be located. 34152904Sshin */ 34252904Sshinstruct ifprefix { 34352904Sshin struct sockaddr *ifpr_prefix; /* prefix of interface */ 34452904Sshin struct ifnet *ifpr_ifp; /* back-pointer to interface */ 34560938Sjake TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 34652904Sshin u_char ifpr_plen; /* prefix length in bits */ 34752904Sshin u_char ifpr_type; /* protocol dependent prefix type */ 34852904Sshin}; 34952904Sshin 35052904Sshin/* 35121404Swollman * Multicast address structure. This is analogous to the ifaddr 35221404Swollman * structure except that it keeps track of multicast addresses. 35321404Swollman * Also, the reference count here is a count of requests for this 35421404Swollman * address, not a count of pointers to this structure. 35521404Swollman */ 35621404Swollmanstruct ifmultiaddr { 35772084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 35821434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 35921434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 36021434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 36121434Swollman u_int ifma_refcount; /* reference count */ 36221434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 36321404Swollman}; 36421404Swollman 36555205Speter#ifdef _KERNEL 36621259Swollman#define IFAFREE(ifa) \ 36746568Speter do { \ 36846568Speter if ((ifa)->ifa_refcnt <= 0) \ 36946568Speter ifafree(ifa); \ 37046568Speter else \ 37146568Speter (ifa)->ifa_refcnt--; \ 37246568Speter } while (0) 37321259Swollman 37421259Swollmanextern struct ifnethead ifnet; 37552904Sshinextern struct ifnet **ifindex2ifnet; 37621259Swollmanextern int ifqmaxlen; 37771791Speterextern struct ifnet *loif; /* first loopback interface */ 37821259Swollmanextern int if_index; 37921259Swollmanextern struct ifaddr **ifnet_addrs; 38021259Swollman 38163090Sarchievoid ether_ifattach __P((struct ifnet *, int)); 38263090Sarchievoid ether_ifdetach __P((struct ifnet *, int)); 38321259Swollmanvoid ether_input __P((struct ifnet *, struct ether_header *, struct mbuf *)); 38462143Sarchievoid ether_demux __P((struct ifnet *, struct ether_header *, struct mbuf *)); 38521259Swollmanint ether_output __P((struct ifnet *, 38621259Swollman struct mbuf *, struct sockaddr *, struct rtentry *)); 38762143Sarchieint ether_output_frame __P((struct ifnet *, struct mbuf *)); 38821259Swollmanint ether_ioctl __P((struct ifnet *, int, caddr_t)); 38921259Swollman 39053541Sshinint if_addmulti __P((struct ifnet *, struct sockaddr *, 39121434Swollman struct ifmultiaddr **)); 39221404Swollmanint if_allmulti __P((struct ifnet *, int)); 39321259Swollmanvoid if_attach __P((struct ifnet *)); 39421404Swollmanint if_delmulti __P((struct ifnet *, struct sockaddr *)); 39545720Spetervoid if_detach __P((struct ifnet *)); 39621259Swollmanvoid if_down __P((struct ifnet *)); 39741879Sphkvoid if_route __P((struct ifnet *, int flag, int fam)); 39864651Sarchieint if_setlladdr __P((struct ifnet *, const u_char *, int)); 39941879Sphkvoid if_unroute __P((struct ifnet *, int flag, int fam)); 40021259Swollmanvoid if_up __P((struct ifnet *)); 40121259Swollman/*void ifinit __P((void));*/ /* declared in systm.h for main() */ 40236735Sdfrint ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 40321259Swollmanint ifpromisc __P((struct ifnet *, int)); 40479103Sbrooksstruct ifnet *ifunit __P((const char *)); 40552904Sshinstruct ifnet *if_withname __P((struct sockaddr *)); 40621259Swollman 40721259Swollmanint if_poll_recv_slow __P((struct ifnet *ifp, int *quotap)); 40821259Swollmanvoid if_poll_xmit_slow __P((struct ifnet *ifp, int *quotap)); 40921259Swollmanvoid if_poll_throttle __P((void)); 41021259Swollmanvoid if_poll_unthrottle __P((void *)); 41121259Swollmanvoid if_poll_init __P((void)); 41221259Swollmanvoid if_poll __P((void)); 41321259Swollman 41421259Swollmanstruct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 41521259Swollmanstruct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 41621259Swollmanstruct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 41721259Swollmanstruct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 41821259Swollman struct sockaddr *)); 41921259Swollmanstruct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 42021259Swollmanvoid ifafree __P((struct ifaddr *)); 42121259Swollman 42253541Sshinstruct ifmultiaddr *ifmaof_ifpforaddr __P((struct sockaddr *, 42321434Swollman struct ifnet *)); 42460889Sarchieint if_simloop __P((struct ifnet *ifp, struct mbuf *m, int af, int hlen)); 42521434Swollman 42679103Sbrooksvoid if_clone_attach __P((struct if_clone *)); 42779103Sbrooksvoid if_clone_detach __P((struct if_clone *)); 42879103Sbrooks 42979103Sbrooksint if_clone_create __P((char *, int)); 43079103Sbrooksint if_clone_destroy __P((const char *)); 43179103Sbrooks 43255205Speter#endif /* _KERNEL */ 43321259Swollman 43421259Swollman#endif /* !_NET_IF_VAR_H_ */ 435