BSD 4_3_Reno 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 fd639ff..72a3976 100644 (file)
--- a/usr/src/sys/net/if.h
+++ b/usr/src/sys/net/if.h
@@ -1,4 +1,24 @@
-/*     if.h    4.16    82/10/31        */
+/*
+ * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution is only permitted until one year after the first shipment
+ * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
+ * binary forms are permitted provided that: (1) source distributions retain
+ * this entire copyright notice and comment, and (2) distributions including
+ * binaries display the following acknowledgement:  This product includes
+ * software developed by the University of California, Berkeley and its
+ * contributors'' in the documentation or other materials provided with the
+ * distribution and in all advertising materials mentioning features or use
+ * of this software.  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 AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *     @(#)if.h        7.9 (Berkeley) 6/28/90
+ */

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


@@ -24,29 +44,28 @@
  * 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 */
+#ifdef KERNEL
+#include "../sys/time.h"
+#else
+#include <sys/time.h>
+#endif
+#endif

 
 /*
  * 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.)

- *
- * EVENTUALLY PURGE if_net AND if_host FROM STRUCTURE

  */
  */

+

 struct ifnet {
        char    *if_name;               /* name, e.g. ``en'' or ``lo'' */
        short   if_unit;                /* sub-unit for lower level driver */
        short   if_mtu;                 /* maximum transmission unit */
 struct ifnet {
        char    *if_name;               /* name, e.g. ``en'' or ``lo'' */
        short   if_unit;                /* sub-unit for lower level driver */
        short   if_mtu;                 /* maximum transmission unit */

-       int     if_net;                 /* network number of interface */

        short   if_flags;               /* up/down, broadcast, etc. */
        short   if_timer;               /* time 'til if_watchdog called */
        short   if_flags;               /* up/down, broadcast, etc. */
        short   if_timer;               /* time 'til if_watchdog called */

-       int     if_host[2];             /* local net host number */
-       struct  sockaddr if_addr;       /* address of interface */
-       union {
-               struct  sockaddr ifu_broadaddr;
-               struct  sockaddr ifu_dstaddr;
-       } if_ifu;
-#define        if_broadaddr    if_ifu.ifu_broadaddr    /* broadcast address */
-#define        if_dstaddr      if_ifu.ifu_dstaddr      /* other end of p-to-p link */
+       int     if_metric;              /* routing metric (external only) */
+       struct  ifaddr *if_addrlist;    /* linked list of addresses per if */

        struct  ifqueue {
                struct  mbuf *ifq_head;
                struct  mbuf *ifq_tail;
        struct  ifqueue {
                struct  mbuf *ifq_head;
                struct  mbuf *ifq_tail;


@@ -56,7 +75,10 @@ struct ifnet {
        } if_snd;                       /* output queue */
 /* procedure handles */
        int     (*if_init)();           /* init routine */
        } if_snd;                       /* output queue */
 /* procedure handles */
        int     (*if_init)();           /* init routine */

-       int     (*if_output)();         /* output 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_reset)();          /* bus reset routine */
        int     (*if_watchdog)();       /* timer routine */
 /* generic interface statistics */


@@ -67,13 +89,37 @@ struct ifnet {
        int     if_collisions;          /* collisions on csma interfaces */
 /* end statistics */
        struct  ifnet *if_next;
        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 */

 };
 
 #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 */

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

 
 /*
  * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
 
 /*
  * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)


@@ -84,16 +130,16 @@ 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); \


@@ -102,9 +148,9 @@ 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--; \
        } \
 }


@@ -112,13 +158,79 @@ struct ifnet {
 #define        IFQ_MAXLEN      50
 #define        IFNET_SLOWHZ    1               /* granularity is 1 second */
 
 #define        IFQ_MAXLEN      50
 #define        IFNET_SLOWHZ    1               /* granularity is 1 second */
 

+/*
+ * The ifaddr structure contains information about one address
+ * of an interface.  They are maintained by the different address families,
+ * are allocated and attached when an address is set, and are linked
+ * together so all addresses for an interface can be located.
+ */
+struct ifaddr {
+       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 */
+       int     (*ifa_rtrequest)();     /* check or clean routes (+ or -)'d */
+       struct  rtentry *ifa_rt;        /* ??? for ROUTETOIF */
+       u_short ifa_flags;              /* mostly rt_flags for cloning */
+       u_short ifa_llinfolen;          /* extra to malloc for link info */
+};
+#define IFA_ROUTE      RTF_UP          /* route installed */
+/*
+ * Interface request structure used for socket
+ * ioctl's.  All interface ioctl's must have parameter
+ * definitions which begin with ifr_name.  The
+ * remainder may be interface specific.
+ */
+struct ifreq {
+#define        IFNAMSIZ        16
+       char    ifr_name[IFNAMSIZ];             /* if name, e.g. "en0" */
+       union {
+               struct  sockaddr ifru_addr;
+               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 */
+#define        ifr_metric      ifr_ifru.ifru_metric    /* metric */
+#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
+ * for machine (useful for programs which
+ * must know all networks accessible).
+ */
+struct ifconf {
+       int     ifc_len;                /* size of associated buffer */
+       union {
+               caddr_t ifcu_buf;
+               struct  ifreq *ifcu_req;
+       } ifc_ifcu;
+#define        ifc_buf ifc_ifcu.ifcu_buf       /* buffer address */
+#define        ifc_req ifc_ifcu.ifcu_req       /* array of structures returned */
+};
+

 #ifdef KERNEL
 #ifdef KERNEL

-#ifdef INET
-struct ifqueue ipintrq;                /* ip packet input queue */
-#endif
+#include "../net/if_arp.h"

 struct ifqueue rawintrq;               /* raw packet input queue */
 struct ifnet *ifnet;
 struct ifqueue rawintrq;               /* raw packet input queue */
 struct ifnet *ifnet;

-struct ifnet *if_ifwithaddr(), *if_ifwithnet(), *if_ifwithaf();
-struct ifnet *if_ifonnetof();
-struct in_addr if_makeaddr();
-#endif
+struct ifaddr *ifa_ifwithaddr(), *ifa_ifwithnet();
+struct ifaddr *ifa_ifwithdstaddr();
+#else KERNEL
+#include <net/if_arp.h>
+#endif KERNEL