X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/278f5cb048ec78445ae31271fbaaf20794d78fec..fd88f5c5678c80ff5e338adc372d28a52ad20530:/usr/src/sys/net/if.h?ds=inline diff --git a/usr/src/sys/net/if.h b/usr/src/sys/net/if.h index 13b6d4fd0f..ec86b68637 100644 --- a/usr/src/sys/net/if.h +++ b/usr/src/sys/net/if.h @@ -1,10 +1,36 @@ /* - * Copyright (c) 1982, 1986, 1989 Regents of the University of California. - * All rights reserved. + * Copyright (c) 1982, 1986, 1989, 1993 + * The Regents of the University of California. All rights reserved. * - * %sccs.include.redist.c% + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. * - * @(#)if.h 7.12 (Berkeley) %G% + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)if.h 8.3 (Berkeley) 2/9/95 */ /* @@ -16,7 +42,7 @@ * received from its medium. * * Output occurs when the routine if_output is called, with three parameters: - * (*ifp->if_output)(ifp, m, dst) + * (*ifp->if_output)(ifp, m, dst, rt) * Here m is the mbuf chain to be sent and dst is the destination address. * The output routine encapsulates the supplied datagram if necessary, * and then transmits it on its medium. @@ -32,13 +58,23 @@ * interfaces. These routines live in the files if.c and route.c */ #ifndef _TIME_ /* XXX fast fix for SNMP, going away soon */ -#ifdef KERNEL -#include "../sys/time.h" -#else #include #endif -#endif +#ifdef __STDC__ +/* + * Forward structure declarations for function prototypes [sic]. + */ +struct mbuf; +struct proc; +struct rtentry; +struct socket; +struct ether_header; +#endif +/* + * Structure describing information about an interface + * which may be of interest to management entities. + */ /* * Structure defining a queue for a network interface. * @@ -47,12 +83,52 @@ struct ifnet { char *if_name; /* name, e.g. ``en'' or ``lo'' */ + struct ifnet *if_next; /* all struct ifnets are chained */ + struct ifaddr *if_addrlist; /* linked list of addresses per if */ + int if_pcount; /* number of promiscuous listeners */ + caddr_t if_bpf; /* packet filter structure */ + u_short if_index; /* numeric abbreviation for this if */ short if_unit; /* sub-unit for lower level driver */ - short if_mtu; /* maximum transmission unit */ - short if_flags; /* up/down, broadcast, etc. */ short if_timer; /* time 'til if_watchdog called */ - int if_metric; /* routing metric (external only) */ - struct ifaddr *if_addrlist; /* linked list of addresses per if */ + short if_flags; /* up/down, broadcast, etc. */ + struct if_data { +/* generic interface information */ + u_char ifi_type; /* ethernet, tokenring, etc */ + u_char ifi_addrlen; /* media address length */ + u_char ifi_hdrlen; /* media header length */ + u_long ifi_mtu; /* maximum transmission unit */ + u_long ifi_metric; /* routing metric (external only) */ + u_long ifi_baudrate; /* linespeed */ +/* volatile statistics */ + u_long ifi_ipackets; /* packets received on interface */ + u_long ifi_ierrors; /* input errors on interface */ + u_long ifi_opackets; /* packets sent on interface */ + u_long ifi_oerrors; /* output errors on interface */ + u_long ifi_collisions; /* collisions on csma interfaces */ + u_long ifi_ibytes; /* total number of octets received */ + u_long ifi_obytes; /* total number of octets sent */ + u_long ifi_imcasts; /* packets received via multicast */ + u_long ifi_omcasts; /* packets sent via multicast */ + u_long ifi_iqdrops; /* dropped on input, this interface */ + u_long ifi_noproto; /* destined for unsupported protocol */ + struct timeval ifi_lastchange;/* last updated */ + } if_data; +/* procedure handles */ + int (*if_init) /* init routine */ + __P((int)); + int (*if_output) /* output routine (enqueue) */ + __P((struct ifnet *, struct mbuf *, struct sockaddr *, + struct rtentry *)); + int (*if_start) /* initiate output routine */ + __P((struct ifnet *)); + int (*if_done) /* output complete routine */ + __P((struct ifnet *)); /* (XXX not used; fake prototype) */ + int (*if_ioctl) /* ioctl routine */ + __P((struct ifnet *, u_long, caddr_t)); + int (*if_reset) + __P((int)); /* new autoconfig will permit removal */ + int (*if_watchdog) /* timer routine */ + __P((int)); struct ifqueue { struct mbuf *ifq_head; struct mbuf *ifq_tail; @@ -60,37 +136,25 @@ struct ifnet { int ifq_maxlen; int ifq_drops; } if_snd; /* output queue */ -/* procedure handles */ - int (*if_init)(); /* init routine */ - int (*if_output)(); /* output routine (enqueue) */ - int (*if_start)(); /* initiate output routine */ - int (*if_done)(); /* output complete routine */ - int (*if_ioctl)(); /* ioctl routine */ - int (*if_reset)(); /* bus reset routine */ - int (*if_watchdog)(); /* timer routine */ -/* generic interface statistics */ - int if_ipackets; /* packets received on interface */ - int if_ierrors; /* input errors on interface */ - int if_opackets; /* packets sent on interface */ - int if_oerrors; /* output errors on interface */ - int if_collisions; /* collisions on csma interfaces */ -/* end statistics */ - struct ifnet *if_next; - u_char if_type; /* ethernet, tokenring, etc */ - u_char if_addrlen; /* media address length */ - u_char if_hdrlen; /* media header length */ - u_char if_index; /* numeric abbreviation for this if */ -/* more statistics here to avoid recompiling netstat */ - struct timeval if_lastchange; /* last updated */ - int if_ibytes; /* total number of octets received */ - int if_obytes; /* total number of octets sent */ - int if_imcasts; /* packets received via multicast */ - int if_omcasts; /* packets sent via multicast */ - int if_iqdrops; /* dropped on input, this interface */ - int if_noproto; /* destined for unsupported protocol */ - int if_baudrate; /* linespeed */ - int if_pcount; /* number of promiscuous listeners */ }; +#define if_mtu if_data.ifi_mtu +#define if_type if_data.ifi_type +#define if_addrlen if_data.ifi_addrlen +#define if_hdrlen if_data.ifi_hdrlen +#define if_metric if_data.ifi_metric +#define if_baudrate if_data.ifi_baudrate +#define if_ipackets if_data.ifi_ipackets +#define if_ierrors if_data.ifi_ierrors +#define if_opackets if_data.ifi_opackets +#define if_oerrors if_data.ifi_oerrors +#define if_collisions if_data.ifi_collisions +#define if_ibytes if_data.ifi_ibytes +#define if_obytes if_data.ifi_obytes +#define if_imcasts if_data.ifi_imcasts +#define if_omcasts if_data.ifi_omcasts +#define if_iqdrops if_data.ifi_iqdrops +#define if_noproto if_data.ifi_noproto +#define if_lastchange if_data.ifi_lastchange #define IFF_UP 0x1 /* interface is up */ #define IFF_BROADCAST 0x2 /* broadcast address valid */ @@ -100,18 +164,19 @@ struct ifnet { #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ #define IFF_RUNNING 0x40 /* resources allocated */ #define IFF_NOARP 0x80 /* no address resolution protocol */ -/* next two not supported now, but reserved: */ #define IFF_PROMISC 0x100 /* receive all packets */ #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ #define IFF_OACTIVE 0x400 /* transmission in progress */ #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ -#define IFF_LLC0 0x1000 /* per link layer defined bit */ -#define IFF_LLC1 0x2000 /* per link layer defined bit */ -#define IFF_LLC2 0x4000 /* per link layer defined bit */ +#define IFF_LINK0 0x1000 /* per link layer defined bit */ +#define IFF_LINK1 0x2000 /* per link layer defined bit */ +#define IFF_LINK2 0x4000 /* per link layer defined bit */ +#define IFF_MULTICAST 0x8000 /* supports multicast */ /* flags set internally only: */ #define IFF_CANTCHANGE \ - (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|IFF_SIMPLEX) + (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ + IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) /* * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) @@ -163,12 +228,44 @@ struct ifaddr { struct sockaddr *ifa_netmask; /* used to determine subnet */ struct ifnet *ifa_ifp; /* back-pointer to interface */ struct ifaddr *ifa_next; /* next address for interface */ - int (*ifa_rtrequest)(); /* check or clean routes (+ or -)'d */ - struct rtentry *ifa_rt; /* ??? for ROUTETOIF */ + void (*ifa_rtrequest)(); /* check or clean routes (+ or -)'d */ u_short ifa_flags; /* mostly rt_flags for cloning */ - u_short ifa_llinfolen; /* extra to malloc for link info */ + short ifa_refcnt; /* extra to malloc for link info */ + int ifa_metric; /* cost of going out this interface */ +#ifdef notdef + struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ +#endif }; -#define IFA_ROUTE RTF_UP /* route installed */ +#define IFA_ROUTE RTF_UP /* route installed */ + +/* + * Message format for use in obtaining information about interfaces + * from getkerninfo and the routing socket + */ +struct if_msghdr { + u_short ifm_msglen; /* to skip over non-understood messages */ + u_char ifm_version; /* future binary compatability */ + u_char ifm_type; /* message type */ + int ifm_addrs; /* like rtm_addrs */ + int ifm_flags; /* value of if_flags */ + u_short ifm_index; /* index for associated ifp */ + struct if_data ifm_data;/* statistics and other data about if */ +}; + +/* + * Message format for use in obtaining information about interface addresses + * from getkerninfo and the routing socket + */ +struct ifa_msghdr { + u_short ifam_msglen; /* to skip over non-understood messages */ + u_char ifam_version; /* future binary compatability */ + u_char ifam_type; /* message type */ + int ifam_addrs; /* like rtm_addrs */ + int ifam_flags; /* value of ifa_flags */ + u_short ifam_index; /* index for associated ifp */ + int ifam_metric; /* value of ifa_metric */ +}; + /* * Interface request structure used for socket * ioctl's. All interface ioctl's must have parameter @@ -217,12 +314,50 @@ struct ifconf { #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ }; -#ifdef KERNEL -#include "../net/if_arp.h" -struct ifqueue rawintrq; /* raw packet input queue */ -struct ifnet *ifnet; -struct ifaddr *ifa_ifwithaddr(), *ifa_ifwithnet(); -struct ifaddr *ifa_ifwithdstaddr(); -#else KERNEL #include -#endif KERNEL + +#ifdef KERNEL +#define IFAFREE(ifa) \ + if ((ifa)->ifa_refcnt <= 0) \ + ifafree(ifa); \ + else \ + (ifa)->ifa_refcnt--; + +struct ifnet *ifnet; + +void ether_ifattach __P((struct ifnet *)); +void ether_input __P((struct ifnet *, struct ether_header *, struct mbuf *)); +int ether_output __P((struct ifnet *, + struct mbuf *, struct sockaddr *, struct rtentry *)); +char *ether_sprintf __P((u_char *)); + +void if_attach __P((struct ifnet *)); +void if_down __P((struct ifnet *)); +void if_qflush __P((struct ifqueue *)); +void if_slowtimo __P((void *)); +void if_up __P((struct ifnet *)); +#ifdef vax +void ifubareset __P((int)); +#endif +int ifconf __P((int, caddr_t)); +void ifinit __P((void)); +int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); +int ifpromisc __P((struct ifnet *, int)); +struct ifnet *ifunit __P((char *)); + +struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); +struct ifaddr *ifa_ifwithaf __P((int)); +struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); +struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); +struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, + struct sockaddr *)); +struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); +void ifafree __P((struct ifaddr *)); +void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); + +int loioctl __P((struct ifnet *, u_long, caddr_t)); +void loopattach __P((int)); +int looutput __P((struct ifnet *, + struct mbuf *, struct sockaddr *, struct rtentry *)); +void lortrequest __P((int, struct rtentry *, struct sockaddr *)); +#endif