diff options
Diffstat (limited to 'networking/udhcp/arpping.c')
| -rw-r--r-- | networking/udhcp/arpping.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/networking/udhcp/arpping.c b/networking/udhcp/arpping.c index 2716a28..471e36d 100644 --- a/networking/udhcp/arpping.c +++ b/networking/udhcp/arpping.c @@ -6,18 +6,31 @@ * by Yoichi Hariguchi <yoichi@fore.com> */ -#include <time.h> -#include <sys/socket.h> #include <netinet/if_ether.h> #include <net/if_arp.h> -#include <netinet/in.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include "dhcpd.h" -#include "arpping.h" #include "common.h" +#include "dhcpd.h" + + +struct arpMsg { + /* Ethernet header */ + u_char h_dest[6]; /* destination ether addr */ + u_char h_source[6]; /* source ether addr */ + u_short h_proto; /* packet type ID field */ + + /* ARP packet */ + uint16_t htype; /* hardware type (must be ARPHRD_ETHER) */ + uint16_t ptype; /* protocol type (must be ETH_P_IP) */ + uint8_t hlen; /* hardware address length (must be 6) */ + uint8_t plen; /* protocol address length (must be 4) */ + uint16_t operation; /* ARP opcode */ + uint8_t sHaddr[6]; /* sender's hardware address */ + uint8_t sInaddr[4]; /* sender's IP address */ + uint8_t tHaddr[6]; /* target's hardware address */ + uint8_t tInaddr[4]; /* target's IP address */ + uint8_t pad[18]; /* pad for min. Ethernet payload (60 bytes) */ +} ATTRIBUTE_PACKED; /* args: yiaddr - what IP to ping * ip - our ip |