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 995d723..5a0cc23 100644 (file)
--- a/usr/src/sys/net/if.h
+++ b/usr/src/sys/net/if.h
@@ -1,4 +1,10 @@
-/*     if.h    6.4     84/04/06        */
+/*
+ * 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


@@ -29,24 +35,15 @@
  * 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;


@@ -73,12 +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_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 */

-#define        IFF_LOCAL       0x100           /* local network, host part encoded */
+/* 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)


@@ -104,6 +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) { \


@@ -117,6 +144,24 @@ 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 */
+       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
 /*
  * Interface request structure used for socket
  * ioctl's.  All interface ioctl's must have parameter


@@ -129,12 +174,16 @@ struct    ifreq {
        union {
                struct  sockaddr ifru_addr;
                struct  sockaddr ifru_dstaddr;
        union {
                struct  sockaddr ifru_addr;
                struct  sockaddr ifru_dstaddr;

+               struct  sockaddr ifru_broadaddr;

                short   ifru_flags;
                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 */
                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_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 */
 };
 


@@ -154,27 +203,12 @@ 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) */
-

 #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