networking/udhcp/arpping.h

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