Updates from Al's ppp-2.2.0d release

[ppp.git] / linux / if_arp.h

diff --git a/linux/if_arp.h b/linux/if_arp.h
new file mode 100644 (file)
index 0000000..34e4c78
--- /dev/null
+++ b/linux/if_arp.h
@@ -0,0 +1,102 @@
+/*
+ * INET                An implementation of the TCP/IP protocol suite for the LINUX
+ *             operating system.  INET is implemented using the  BSD Socket
+ *             interface as the means of communication with the user level.
+ *
+ *             Global definitions for the ARP (RFC 826) protocol.
+ *
+ * Version:    @(#)if_arp.h    1.0.1   04/16/93
+ *
+ * Authors:    Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
+ *             Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source.
+ *             Ross Biro, <bir7@leland.Stanford.Edu>
+ *             Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *             Florian La Roche.
+ *
+ *             This program is free software; you can redistribute it and/or
+ *             modify it under the terms of the GNU General Public License
+ *             as published by the Free Software Foundation; either version
+ *             2 of the License, or (at your option) any later version.
+ */
+#ifndef _LINUX_IF_ARP_H
+#define _LINUX_IF_ARP_H
+
+/* ARP protocol HARDWARE identifiers. */
+#define ARPHRD_NETROM  0               /* from KA9Q: NET/ROM pseudo    */
+#define ARPHRD_ETHER   1               /* Ethernet 10Mbps              */
+#define        ARPHRD_EETHER   2               /* Experimental Ethernet        */
+#define        ARPHRD_AX25     3               /* AX.25 Level 2                */
+#define        ARPHRD_PRONET   4               /* PROnet token ring            */
+#define        ARPHRD_CHAOS    5               /* Chaosnet                     */
+#define        ARPHRD_IEEE802  6               /* IEEE 802.2 Ethernet/TR/TB    */
+#define        ARPHRD_ARCNET   7               /* ARCnet                       */
+#define        ARPHRD_APPLETLK 8               /* APPLEtalk                    */
+/* Dummy types for non ARP hardware */
+#define ARPHRD_SLIP    256
+#define ARPHRD_CSLIP   257
+#define ARPHRD_SLIP6   258
+#define ARPHRD_CSLIP6  259
+#define ARPHRD_RSRVD   260             /* Notional KISS type           */
+#define ARPHRD_ADAPT   264
+#define ARPHRD_PPP     512
+#define ARPHRD_TUNNEL  768             /* IPIP tunnel                  */
+#define ARPHRD_TUNNEL6 769             /* IPIP6 tunnel                 */
+#define ARPHRD_FRAD    770             /* Frame Relay                  */
+#define ARPHRD_SKIP    771             /* SKIP vif                     */
+
+/* ARP protocol opcodes. */
+#define        ARPOP_REQUEST   1               /* ARP request                  */
+#define        ARPOP_REPLY     2               /* ARP reply                    */
+#define        ARPOP_RREQUEST  3               /* RARP request                 */
+#define        ARPOP_RREPLY    4               /* RARP reply                   */
+
+
+/* ARP ioctl request. */
+struct arpreq {
+  struct sockaddr      arp_pa;         /* protocol address             */
+  struct sockaddr      arp_ha;         /* hardware address             */
+  int                  arp_flags;      /* flags                        */
+  struct sockaddr       arp_netmask;    /* netmask (only for proxy arps) */
+  char                 arp_dev[16];
+};
+
+struct arpreq_old {
+  struct sockaddr      arp_pa;         /* protocol address             */
+  struct sockaddr      arp_ha;         /* hardware address             */
+  int                  arp_flags;      /* flags                        */
+  struct sockaddr       arp_netmask;    /* netmask (only for proxy arps) */
+};
+
+/* ARP Flag values. */
+#define ATF_COM                0x02            /* completed entry (ha valid)   */
+#define        ATF_PERM        0x04            /* permanent entry              */
+#define        ATF_PUBL        0x08            /* publish entry                */
+#define        ATF_USETRAILERS 0x10            /* has requested trailers       */
+#define ATF_NETMASK     0x20            /* want to use a netmask (only
+                                          for proxy entries) */
+
+/*
+ *     This structure defines an ethernet arp header.
+ */
+
+struct arphdr
+{
+       unsigned short  ar_hrd;         /* format of hardware address   */
+       unsigned short  ar_pro;         /* format of protocol address   */
+       unsigned char   ar_hln;         /* length of hardware address   */
+       unsigned char   ar_pln;         /* length of protocol address   */
+       unsigned short  ar_op;          /* ARP opcode (command)         */
+
+#if 0
+        /*
+         *      Ethernet looks like this : This bit is variable sized however...
+         */
+       unsigned char           ar_sha[ETH_ALEN];       /* sender hardware address      */
+       unsigned char           ar_sip[4];              /* sender IP address            */
+       unsigned char           ar_tha[ETH_ALEN];       /* target hardware address      */
+       unsigned char           ar_tip[4];              /* target IP address            */
+#endif
+
+};
+
+#endif /* _LINUX_IF_ARP_H */