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packet.h

#ifndef _PACKET_H
#define _PACKET_H

#include <netinet/udp.h>
#include <netinet/ip.h>

00007 struct dhcpMessage {
      uint8_t op;
      uint8_t htype;
      uint8_t hlen;
      uint8_t hops;
      uint32_t xid;
      uint16_t secs;
      uint16_t flags;
      uint32_t ciaddr;
      uint32_t yiaddr;
      uint32_t siaddr;
      uint32_t giaddr;
      uint8_t chaddr[16];
      uint8_t sname[64];
      uint8_t file[128];
      uint32_t cookie;
      uint8_t options[308]; /* 312 - cookie */
};

00026 struct udp_dhcp_packet {
      struct iphdr ip;
      struct udphdr udp;
      struct dhcpMessage data;
};

void init_header(struct dhcpMessage *packet, char type);
int get_packet(struct dhcpMessage *packet, int fd);
uint16_t checksum(void *addr, int count);
int raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port,
               uint32_t dest_ip, int dest_port, uint8_t *dest_arp, int ifindex);
int kernel_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port,
               uint32_t dest_ip, int dest_port);


#endif

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