myip_fragment.c

一个基于linux的TCP/IP协议栈的实现

static u32 myipfrag_hash_rnd;
static struct timer_list myipfrag_secret_timer;
int mysysctl_ipfrag_secret_interval = 10 * 60 * HZ;

static void myipfrag_secret_rebuild(unsigned long dummy)
{

}

void __init myipfrag_init(void)
{
	myipfrag_hash_rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
					(jiffies ^ (jiffies >> 6)));

	init_timer( &myipfrag_secret_timer );
	myipfrag_secret_timer.function = myipfrag_secret_rebuild;
	myipfrag_secret_timer.expires = jiffies + mysysctl_ipfrag_secret_interval;
	add_timer( &myipfrag_secret_timer );
}

void __exit myipfrag_exit(void)
{
	del_timer( &myipfrag_secret_timer );
}