| /* Definitions for Address Resolution Protocol. |
| Copyright (C) 1997,1999,2001,2006,2009 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* Based on the 4.4BSD and Linux version of this file. */ |
| |
| #ifndef _NET_IF_ARP_H |
| |
| #define _NET_IF_ARP_H 1 |
| #include <sys/cdefs.h> |
| |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| |
| __BEGIN_DECLS |
| |
| /* Some internals from deep down in the kernel. */ |
| #define MAX_ADDR_LEN 7 |
| |
| |
| /* This structure defines an ethernet arp header. */ |
| |
| /* 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. */ |
| #define ARPOP_InREQUEST 8 /* InARP request. */ |
| #define ARPOP_InREPLY 9 /* InARP reply. */ |
| #define ARPOP_NAK 10 /* (ATM)ARP NAK. */ |
| |
| /* See RFC 826 for protocol description. ARP packets are variable |
| in size; the arphdr structure defines the fixed-length portion. |
| Protocol type values are the same as those for 10 Mb/s Ethernet. |
| It is followed by the variable-sized fields ar_sha, arp_spa, |
| arp_tha and arp_tpa in that order, according to the lengths |
| specified. Field names used correspond to RFC 826. */ |
| |
| struct arphdr |
| { |
| unsigned short int ar_hrd; /* Format of hardware address. */ |
| unsigned short int ar_pro; /* Format of protocol address. */ |
| unsigned char ar_hln; /* Length of hardware address. */ |
| unsigned char ar_pln; /* Length of protocol address. */ |
| unsigned short int 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 |
| }; |
| |
| |
| /* ARP protocol HARDWARE identifiers. */ |
| #define ARPHRD_NETROM 0 /* From KA9Q: NET/ROM pseudo. */ |
| #define ARPHRD_ETHER 1 /* Ethernet 10/100Mbps. */ |
| #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. */ |
| #define ARPHRD_DLCI 15 /* Frame Relay DLCI. */ |
| #define ARPHRD_ATM 19 /* ATM. */ |
| #define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id). */ |
| #define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734. */ |
| #define ARPHRD_EUI64 27 /* EUI-64. */ |
| #define ARPHRD_INFINIBAND 32 /* InfiniBand. */ |
| |
| /* 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_ROSE 270 |
| #define ARPHRD_X25 271 /* CCITT X.25. */ |
| #define ARPHRD_HWX25 272 /* Boards with X.25 in firmware. */ |
| #define ARPHRD_PPP 512 |
| #define ARPHRD_CISCO 513 /* Cisco HDLC. */ |
| #define ARPHRD_HDLC ARPHRD_CISCO |
| #define ARPHRD_LAPB 516 /* LAPB. */ |
| #define ARPHRD_DDCMP 517 /* Digital's DDCMP. */ |
| #define ARPHRD_RAWHDLC 518 /* Raw HDLC. */ |
| |
| #define ARPHRD_TUNNEL 768 /* IPIP tunnel. */ |
| #define ARPHRD_TUNNEL6 769 /* IPIP6 tunnel. */ |
| #define ARPHRD_FRAD 770 /* Frame Relay Access Device. */ |
| #define ARPHRD_SKIP 771 /* SKIP vif. */ |
| #define ARPHRD_LOOPBACK 772 /* Loopback device. */ |
| #define ARPHRD_LOCALTLK 773 /* Localtalk device. */ |
| #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface. */ |
| #define ARPHRD_BIF 775 /* AP1000 BIF. */ |
| #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4. */ |
| #define ARPHRD_IPDDP 777 /* IP-in-DDP tunnel. */ |
| #define ARPHRD_IPGRE 778 /* GRE over IP. */ |
| #define ARPHRD_PIMREG 779 /* PIMSM register interface. */ |
| #define ARPHRD_HIPPI 780 /* High Performance Parallel I'face. */ |
| #define ARPHRD_ASH 781 /* (Nexus Electronics) Ash. */ |
| #define ARPHRD_ECONET 782 /* Acorn Econet. */ |
| #define ARPHRD_IRDA 783 /* Linux-IrDA. */ |
| #define ARPHRD_FCPP 784 /* Point to point fibrechanel. */ |
| #define ARPHRD_FCAL 785 /* Fibrechanel arbitrated loop. */ |
| #define ARPHRD_FCPL 786 /* Fibrechanel public loop. */ |
| #define ARPHRD_FCFABRIC 787 /* Fibrechanel fabric. */ |
| #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR. */ |
| #define ARPHRD_IEEE80211 801 /* IEEE 802.11. */ |
| #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header. */ |
| #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header. */ |
| #define ARPHRD_IEEE802154 804 /* IEEE 802.15.4 header. */ |
| #define ARPHRD_IEEE802154_PHY 805 /* IEEE 802.15.4 PHY header. */ |
| |
| #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known. */ |
| #define ARPHRD_NONE 0xFFFE /* Zero header length. */ |
| |
| |
| /* 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). */ |
| #define ATF_DONTPUB 0x40 /* Don't answer this addresses. */ |
| #define ATF_MAGIC 0x80 /* Automatically added entry. */ |
| |
| |
| /* Support for the user space arp daemon, arpd. */ |
| #define ARPD_UPDATE 0x01 |
| #define ARPD_LOOKUP 0x02 |
| #define ARPD_FLUSH 0x03 |
| |
| struct arpd_request |
| { |
| unsigned short int req; /* Request type. */ |
| u_int32_t ip; /* IP address of entry. */ |
| unsigned long int dev; /* Device entry is tied to. */ |
| unsigned long int stamp; |
| unsigned long int updated; |
| unsigned char ha[MAX_ADDR_LEN]; /* Hardware address. */ |
| }; |
| |
| __END_DECLS |
| |
| #endif /* net/if_arp.h */ |
