BSD 4_3_Net_2 release

[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 25d2cca..ef86f7c 100644 (file)
--- a/usr/src/sys/netinet/if_ether.h
+++ b/usr/src/sys/netinet/if_ether.h
@@ -1,21 +1,108 @@
-/*     if_ether.h      4.1     82/12/16        */
+/*
+ * Copyright (c) 1982, 1986 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_ether.h  7.5 (Berkeley) 6/28/90
+ */

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

-struct eth_header {
-       u_char  eth_dhost[6];
-       u_char  eth_shost[6];
-       u_short eth_type;
+struct ether_header {
+       u_char  ether_dhost[6];
+       u_char  ether_shost[6];
+       u_short ether_type;

 };
 
 };
 

-#define        ETHPUP_PUPTYPE  4               /* PUP protocol */
-#define        ETHPUP_IPTYPE   8               /* IP protocol */
+#define        ETHERTYPE_PUP   0x0200          /* PUP protocol */
+#define        ETHERTYPE_IP    0x0800          /* IP protocol */
+#define ETHERTYPE_ARP  0x0806          /* Addr. resolution protocol */

 
 /*
 
 /*

- * The ETHPUP_NTRAILER packet types starting at ETHPUP_TRAIL have
- * (type-ETHPUP_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        ETHPUP_TRAIL    16              /* Trailer PUP */
-#define        ETHPUP_NTRAILER 16
+#define        ETHERTYPE_TRAIL         0x1000          /* Trailer packet */
+#define        ETHERTYPE_NTRAILER      16
+
+#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();
+int    ether_output(), ether_input();
+char   *ether_sprintf();
+#endif