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 f2e0d03..ec86b68 100644 (file)
--- a/usr/src/sys/net/if.h
+++ b/usr/src/sys/net/if.h
@@ -1,4 +1,37 @@
-/*     if.h    6.6     85/03/19        */
+/*
+ * Copyright (c) 1982, 1986, 1989, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ *
+ * 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
+ */

 
 /*
  * Structures defining a network interface, providing a packet
 
 /*
  * Structures defining a network interface, providing a packet


@@ -9,7 +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.


@@ -24,19 +57,78 @@
  * routing and gateway routines maintaining information used to locate
  * interfaces.  These routines live in the files if.c and route.c
  */
  * routing and gateway routines maintaining information used to locate
  * interfaces.  These routines live in the files if.c and route.c
  */

+#ifndef _TIME_ /*  XXX fast fix for SNMP, going away soon */
+#include <sys/time.h>
+#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.
  *
  * (Would like to call this struct ``if'', but C isn't PL/1.)
  */
 /*
  * Structure defining a queue for a network interface.
  *
  * (Would like to call this struct ``if'', but C isn't PL/1.)
  */

+

 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 */

-       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;


@@ -44,32 +136,47 @@ 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 */
-       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;

 };
 };

+#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_DEBUG       0x4             /* turn on debugging */
 
 #define        IFF_UP          0x1             /* interface is up */
 #define        IFF_BROADCAST   0x2             /* broadcast address valid */
 #define        IFF_DEBUG       0x4             /* turn on debugging */

-/* was IFF_ROUTE       0x8             /* routing entry installed */
+#define        IFF_LOOPBACK    0x8             /* is a loopback net */

 #define        IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
 #define        IFF_NOTRAILERS  0x20            /* avoid use of trailers */
 #define        IFF_RUNNING     0x40            /* resources allocated */
 #define        IFF_NOARP       0x80            /* no address resolution protocol */
 #define        IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
 #define        IFF_NOTRAILERS  0x20            /* avoid use of trailers */
 #define        IFF_RUNNING     0x40            /* resources allocated */
 #define        IFF_NOARP       0x80            /* no address resolution protocol */

-                                       /* flags set internally only: */
-#define        IFF_CANTCHANGE  (IFF_BROADCAST | IFF_POINTOPOINT | IFF_RUNNING)
+#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 \
+       (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)


@@ -80,16 +187,16 @@ struct ifnet {
 #define        IF_QFULL(ifq)           ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
 #define        IF_DROP(ifq)            ((ifq)->ifq_drops++)
 #define        IF_ENQUEUE(ifq, m) { \
 #define        IF_QFULL(ifq)           ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
 #define        IF_DROP(ifq)            ((ifq)->ifq_drops++)
 #define        IF_ENQUEUE(ifq, m) { \

-       (m)->m_act = 0; \
+       (m)->m_nextpkt = 0; \

        if ((ifq)->ifq_tail == 0) \
                (ifq)->ifq_head = m; \
        else \
        if ((ifq)->ifq_tail == 0) \
                (ifq)->ifq_head = m; \
        else \

-               (ifq)->ifq_tail->m_act = m; \
+               (ifq)->ifq_tail->m_nextpkt = m; \

        (ifq)->ifq_tail = m; \
        (ifq)->ifq_len++; \
 }
 #define        IF_PREPEND(ifq, m) { \
        (ifq)->ifq_tail = m; \
        (ifq)->ifq_len++; \
 }
 #define        IF_PREPEND(ifq, m) { \

-       (m)->m_act = (ifq)->ifq_head; \
+       (m)->m_nextpkt = (ifq)->ifq_head; \

        if ((ifq)->ifq_tail == 0) \
                (ifq)->ifq_tail = (m); \
        (ifq)->ifq_head = (m); \
        if ((ifq)->ifq_tail == 0) \
                (ifq)->ifq_tail = (m); \
        (ifq)->ifq_head = (m); \


@@ -98,9 +205,9 @@ struct ifnet {
 #define        IF_DEQUEUE(ifq, m) { \
        (m) = (ifq)->ifq_head; \
        if (m) { \
 #define        IF_DEQUEUE(ifq, m) { \
        (m) = (ifq)->ifq_head; \
        if (m) { \

-               if (((ifq)->ifq_head = (m)->m_act) == 0) \
+               if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \

                        (ifq)->ifq_tail = 0; \
                        (ifq)->ifq_tail = 0; \

-               (m)->m_act = 0; \
+               (m)->m_nextpkt = 0; \

                (ifq)->ifq_len--; \
        } \
 }
                (ifq)->ifq_len--; \
        } \
 }


@@ -115,15 +222,48 @@ struct ifnet {
  * together so all addresses for an interface can be located.
  */
 struct ifaddr {
  * together so all addresses for an interface can be located.
  */
 struct ifaddr {

-       struct  sockaddr ifa_addr;      /* address of interface */
-       union {
-               struct  sockaddr ifu_broadaddr;
-               struct  sockaddr ifu_dstaddr;
-       } ifa_ifu;
-#define        ifa_broadaddr   ifa_ifu.ifu_broadaddr   /* broadcast address */
-#define        ifa_dstaddr     ifa_ifu.ifu_dstaddr     /* other end of p-to-p link */
+       struct  sockaddr *ifa_addr;     /* address of interface */
+       struct  sockaddr *ifa_dstaddr;  /* other end of p-to-p link */
+#define        ifa_broadaddr   ifa_dstaddr     /* broadcast address 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 */
        struct  ifnet *ifa_ifp;         /* back-pointer to interface */
        struct  ifaddr *ifa_next;       /* next address for interface */

+       void    (*ifa_rtrequest)();     /* check or clean routes (+ or -)'d */
+       u_short ifa_flags;              /* mostly rt_flags for cloning */
+       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 */
+
+/*
+ * 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 */

 };
 
 /*
 };
 
 /*


@@ -140,15 +280,24 @@ struct    ifreq {
                struct  sockaddr ifru_dstaddr;
                struct  sockaddr ifru_broadaddr;
                short   ifru_flags;
                struct  sockaddr ifru_dstaddr;
                struct  sockaddr ifru_broadaddr;
                short   ifru_flags;

+               int     ifru_metric;

                caddr_t ifru_data;
        } ifr_ifru;
 #define        ifr_addr        ifr_ifru.ifru_addr      /* address */
 #define        ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-to-p link */
 #define        ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address */
 #define        ifr_flags       ifr_ifru.ifru_flags     /* flags */
                caddr_t ifru_data;
        } ifr_ifru;
 #define        ifr_addr        ifr_ifru.ifru_addr      /* address */
 #define        ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-to-p link */
 #define        ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address */
 #define        ifr_flags       ifr_ifru.ifru_flags     /* flags */

+#define        ifr_metric      ifr_ifru.ifru_metric    /* metric */

 #define        ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 };
 
 #define        ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 };
 

+struct ifaliasreq {
+       char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
+       struct  sockaddr ifra_addr;
+       struct  sockaddr ifra_broadaddr;
+       struct  sockaddr ifra_mask;
+};
+

 /*
  * Structure used in SIOCGIFCONF request.
  * Used to retrieve interface configuration
 /*
  * Structure used in SIOCGIFCONF request.
  * Used to retrieve interface configuration


@@ -165,25 +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 */
 };
 

-/*
- * ARP ioctl request
- */
-struct arpreq {
-       struct sockaddr arp_pa;         /* protocol address */
-       struct sockaddr arp_ha;         /* hardware address */
-       int     arp_flags;              /* flags */
-};
-/*  arp_flags and at_flags field values */
-#define        ATF_INUSE       1       /* entry in use */
-#define ATF_COM                2       /* completed entry (enaddr valid) */
-#define        ATF_PERM        4       /* permanent entry */
-#define        ATF_PUBL        8       /* publish entry (respond for other host) */
+#include <net/if_arp.h>

 
 #ifdef KERNEL
 
 #ifdef KERNEL

-#ifdef INET
-struct ifqueue ipintrq;                /* ip packet input queue */
+#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
 #endif

-struct ifqueue rawintrq;               /* raw packet input queue */
-struct ifnet *ifnet;
-struct ifaddr *ifa_ifwithaddr(), *ifa_ifwithnet(), *ifa_ifwithaf();
+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
 #endif