BSD 4_4_Lite2 release

[unix-history] / usr / src / sys / net / if.h

diff --git a/usr/src/sys/net/if.h b/usr/src/sys/net/if.h
index f60ff79..ec86b68 100644 (file)
--- 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        7.11 (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:
  * 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.
  * 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 */
  * 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 <sys/time.h>
 #endif
 #include <sys/time.h>
 #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.
  *
 /*
  * 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 {
        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_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 */
        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;
        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 */
                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 */
 
 #define        IFF_UP          0x1             /* interface is up */
 #define        IFF_BROADCAST   0x2             /* broadcast address valid */


@@ -100,15 +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 */
 #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_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_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 \
 
 /* 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)
 
 /*
  * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)


@@ -160,12 +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 */
        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_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
 /*
  * Interface request structure used for socket
  * ioctl's.  All interface ioctl's must have parameter


@@ -214,12 +314,50 @@ struct    ifconf {
 #define        ifc_req ifc_ifcu.ifcu_req       /* array of structures returned */
 };
 
 #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 <net/if_arp.h>
 #include <net/if_arp.h>

-#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