git.maemo.org Git - udhcp/blob - arpping.h

   1 /*
   2  * arpping .h
   3  */
   4
   5 #ifndef ARPPING_H
   6 #define ARPPING_H
   7
   8 #include <netinet/if_ether.h>
   9 #include <net/if_arp.h>
  10 #include <net/if.h>
  11 #include <netinet/in.h>
  12
  13 struct arpMsg {
  14         /* Ethernet header */
  15         u_char   h_dest[6];                     /* destination ether addr */
  16         u_char   h_source[6];                   /* source ether addr */
  17         u_short  h_proto;                       /* packet type ID field */
  18
  19         /* ARP packet */
  20         uint16_t htype;                         /* hardware type (must be ARPHRD_ETHER) */
  21         uint16_t ptype;                         /* protocol type (must be ETH_P_IP) */
  22         uint8_t  hlen;                          /* hardware address length (must be 6) */
  23         uint8_t  plen;                          /* protocol address length (must be 4) */
  24         uint16_t operation;                     /* ARP opcode */
  25         uint8_t  sHaddr[6];                     /* sender's hardware address */
  26         uint8_t  sInaddr[4];                    /* sender's IP address */
  27         uint8_t  tHaddr[6];                     /* target's hardware address */
  28         uint8_t  tInaddr[4];                    /* target's IP address */
  29         uint8_t  pad[18];                       /* pad for min. Ethernet payload (60 bytes) */
  30 } __attribute__ ((packed));
  31
  32 /* function prototypes */
  33 int arpping(uint32_t yiaddr, uint32_t ip, uint8_t *arp, char *interface);
  34
  35 #endif