useless register declarations

[unix-history] / usr / src / sys / netinet / if_ether.h

diff --git a/usr/src/sys/netinet/if_ether.h b/usr/src/sys/netinet/if_ether.h
index 1289d65..0d6e4c6 100644 (file)
--- a/usr/src/sys/netinet/if_ether.h
+++ b/usr/src/sys/netinet/if_ether.h
@@ -1,4 +1,10 @@
-/*     if_ether.h      4.3     82/12/16        */
+/*
+ * 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_ether.h  7.1 (Berkeley) %G%
+ */

 
 /*
  * Structure of a 10Mb/s Ethernet header.
 
 /*
  * Structure of a 10Mb/s Ethernet header.


@@ -9,16 +15,66 @@ struct       ether_header {
        u_short ether_type;
 };
 
        u_short ether_type;
 };
 

-#define        ETHERPUP_PUPTYPE        0x0400          /* PUP protocol */
-#define        ETHERPUP_IPTYPE         0x0800          /* IP protocol */
+#define        ETHERTYPE_PUP   0x0200          /* PUP protocol */
+#define        ETHERTYPE_IP    0x0800          /* IP protocol */
+#define ETHERTYPE_ARP  0x0806          /* Addr. resolution protocol */

 
 /*
 
 /*

- * The ETHERPUP_NTRAILER packet types starting at ETHERPUP_TRAIL have
- * (type-ETHERPUP_TRAIL)*512 bytes of data followed
- * by a PUP type (as given above) and then the (variable-length) header.
+ * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
+ * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
+ * by an ETHER type (as given above) and then the (variable-length) header.

  */
  */

-#define        ETHERPUP_TRAIL          0x1000          /* Trailer PUP */
-#define        ETHERPUP_NTRAILER       16
+#define        ETHERTYPE_TRAIL         0x1000          /* Trailer packet */
+#define        ETHERTYPE_NTRAILER      16

 
 #define        ETHERMTU        1500
 #define        ETHERMIN        (60-14)
 
 #define        ETHERMTU        1500
 #define        ETHERMIN        (60-14)

+
+/*
+ * Ethernet Address Resolution Protocol.
+ *
+ * See RFC 826 for protocol description.  Structure below is adapted
+ * to resolving internet addresses.  Field names used correspond to 
+ * RFC 826.
+ */
+struct ether_arp {
+       struct  arphdr ea_hdr;  /* fixed-size header */
+       u_char  arp_sha[6];     /* sender hardware address */
+       u_char  arp_spa[4];     /* sender protocol address */
+       u_char  arp_tha[6];     /* target hardware address */
+       u_char  arp_tpa[4];     /* target protocol address */
+};
+#define        arp_hrd ea_hdr.ar_hrd
+#define        arp_pro ea_hdr.ar_pro
+#define        arp_hln ea_hdr.ar_hln
+#define        arp_pln ea_hdr.ar_pln
+#define        arp_op  ea_hdr.ar_op
+
+
+/*
+ * Structure shared between the ethernet driver modules and
+ * the address resolution code.  For example, each ec_softc or il_softc
+ * begins with this structure.
+ */
+struct arpcom {
+       struct  ifnet ac_if;            /* network-visible interface */
+       u_char  ac_enaddr[6];           /* ethernet hardware address */
+       struct in_addr ac_ipaddr;       /* copy of ip address- XXX */
+};
+
+/*
+ * Internet to ethernet address resolution table.
+ */
+struct arptab {
+       struct  in_addr at_iaddr;       /* internet address */
+       u_char  at_enaddr[6];           /* ethernet address */
+       u_char  at_timer;               /* minutes since last reference */
+       u_char  at_flags;               /* flags */
+       struct  mbuf *at_hold;          /* last packet until resolved/timeout */
+};
+
+#ifdef KERNEL
+u_char etherbroadcastaddr[6];
+struct arptab *arptnew();
+char *ether_sprintf();
+#endif