38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
#ifndef ARPPING_H_
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#define ARPPING_H_
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#include <stdint.h>
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#include <net/if_arp.h>
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#include "config.h"
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#include "packet.h"
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struct arpMsg {
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/* Ethernet header */
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uint8_t h_dest[6]; /* 00 destination ether addr */
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uint8_t h_source[6]; /* 06 source ether addr */
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uint16_t h_proto; /* 0c packet type ID field */
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/* ARP packet */
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uint16_t htype; /* 0e hardware type (must be ARPHRD_ETHER) */
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uint16_t ptype; /* 10 protocol type (must be ETH_P_IP) */
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uint8_t hlen; /* 12 hardware address length (must be 6) */
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uint8_t plen; /* 13 protocol address length (must be 4) */
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uint16_t operation; /* 14 ARP opcode */
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uint8_t sHaddr[6]; /* 16 sender's hardware address */
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uint8_t sInaddr[4]; /* 1c sender's IP address */
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uint8_t tHaddr[6]; /* 20 target's hardware address */
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uint8_t tInaddr[4]; /* 26 target's IP address */
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uint8_t pad[18]; /* 2a pad for min. ethernet payload (60 bytes) */
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};
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enum {
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ARP_MSG_SIZE = 0x2a
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};
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void arp_check(struct client_state_t *cs, struct dhcpMessage *packet);
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void arp_success(struct client_state_t *cs);
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void handle_arp_response(struct client_state_t *cs);
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#endif /* ARPPING_H_ */
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