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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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/* See RFC 826 for protocol description. ARP packets are variable
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in size; the arphdr structure defines the fixed-length portion.
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Protocol type values are the same as those for 10 Mb/s Ethernet.
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It is followed by the variable-sized fields ar_sha, arp_spa,
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arp_tha and arp_tpa in that order, according to the lengths
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specified. Field names used correspond to RFC 826. */
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unsigned short int ar_hrd; /* Format of hardware address. */
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unsigned short int ar_pro; /* Format of protocol address. */
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unsigned char ar_hln; /* Length of hardware address. */
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unsigned char ar_pln; /* Length of protocol address. */
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unsigned short int ar_op; /* ARP opcode (command). */
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unsigned char __ar_sha[ETHER_ADDR_LEN]; /* Sender hardware address. */
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unsigned char __ar_sip[4]; /* Sender IP address. */
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unsigned char __ar_tha[ETHER_ADDR_LEN]; /* Target hardware address. */
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unsigned char __ar_tip[4]; /* Target IP address. */
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/* ARP protocol opcodes. */
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#define ARPOP_REQUEST 1 /* ARP request. */
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#define ARPOP_REPLY 2 /* ARP reply. */
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#define ARPOP_RREQUEST 3 /* RARP request. */
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#define ARPOP_RREPLY 4 /* RARP reply. */
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#define ARPOP_InREQUEST 8 /* InARP request. */
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#define ARPOP_InREPLY 9 /* InARP reply. */
added
removed
include/ARPhdr.h
