Unix Programming - How do I use sa_data member in an sockaddr structure ??? Plz its urgent

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How do I use sa_data member in an sockaddr structure ??? Plz its urgent

jeniffer

2006-04-27, 7:56 am

I want to access ARP cache by the PF_NET socket structure.(ioctl()
command) .How do i fill arp_pa 's sa_data member such that I can give
protocol and hardware addresses..Please tell me its urgent .

struct arpreq
{
struct sockaddr arp_pa; /* protocol address */
struct sockaddr arp_ha; /* hardware address */
int arp_flags; /* flags */
struct sockaddr arp_netmask; /* netmask of protocol address */
char arp_dev[16];
}