BSD 4_3 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 4937ffa..5a0cc23 100644 (file)
--- a/usr/src/sys/net/if.h
+++ b/usr/src/sys/net/if.h
@@ -1,4 +1,10 @@
-/*     if.h    4.11    82/03/28        */
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *     @(#)if.h        7.1 (Berkeley) 6/4/86
+ */

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


@@ -34,11 +40,10 @@ 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 */
        char    *if_name;               /* name, e.g. ``en'' or ``lo'' */
        short   if_unit;                /* sub-unit for lower level driver */
        short   if_mtu;                 /* maximum transmission unit */

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

        short   if_flags;               /* up/down, broadcast, etc. */
        short   if_flags;               /* up/down, broadcast, etc. */

-       int     if_host[2];             /* local net host number */
-       struct  sockaddr if_addr;       /* internet address of interface */
-       struct  sockaddr if_broadaddr;  /* broadcast address of interface */
+       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 */

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


@@ -49,7 +54,9 @@ struct ifnet {
 /* procedure handles */
        int     (*if_init)();           /* init routine */
        int     (*if_output)();         /* output routine */
 /* procedure handles */
        int     (*if_init)();           /* init routine */
        int     (*if_output)();         /* output routine */

-       int     (*if_ubareset)();       /* uba reset 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 */
 /* generic interface statistics */
        int     if_ipackets;            /* packets received on interface */
        int     if_ierrors;             /* input errors on interface */


@@ -63,6 +70,16 @@ struct ifnet {
 #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_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 */
+/* next two not supported now, but reserved: */
+#define        IFF_PROMISC     0x100           /* receive all packets */
+#define        IFF_ALLMULTI    0x200           /* receive all multicast packets */
+/* flags set internally only: */
+#define        IFF_CANTCHANGE  (IFF_BROADCAST | IFF_POINTOPOINT | IFF_RUNNING)

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


@@ -88,6 +105,32 @@ struct ifnet {
        (ifq)->ifq_head = (m); \
        (ifq)->ifq_len++; \
 }
        (ifq)->ifq_head = (m); \
        (ifq)->ifq_len++; \
 }

+/*
+ * Packets destined for level-1 protocol input routines
+ * have a pointer to the receiving interface prepended to the data.
+ * IF_DEQUEUEIF extracts and returns this pointer when dequeueing the packet.
+ * IF_ADJ should be used otherwise to adjust for its presence.
+ */
+#define        IF_ADJ(m) { \
+       (m)->m_off += sizeof(struct ifnet *); \
+       (m)->m_len -= sizeof(struct ifnet *); \
+       if ((m)->m_len == 0) { \
+               struct mbuf *n; \
+               MFREE((m), n); \
+               (m) = n; \
+       } \
+}
+#define        IF_DEQUEUEIF(ifq, m, ifp) { \
+       (m) = (ifq)->ifq_head; \
+       if (m) { \
+               if (((ifq)->ifq_head = (m)->m_act) == 0) \
+                       (ifq)->ifq_tail = 0; \
+               (m)->m_act = 0; \
+               (ifq)->ifq_len--; \
+               (ifp) = *(mtod((m), struct ifnet **)); \
+               IF_ADJ(m); \
+       } \
+}

 #define        IF_DEQUEUE(ifq, m) { \
        (m) = (ifq)->ifq_head; \
        if (m) { \
 #define        IF_DEQUEUE(ifq, m) { \
        (m) = (ifq)->ifq_head; \
        if (m) { \


@@ -99,14 +142,73 @@ struct ifnet {
 }
 
 #define        IFQ_MAXLEN      50
 }
 
 #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 */
+       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  ifnet *ifa_ifp;         /* back-pointer to interface */
+       struct  ifaddr *ifa_next;       /* next address for interface */
+};
+
+/*
+ * 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 */
+};
+
+/*
+ * 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