tag	line	file	source code
header_cache	160	include/linux/netdevice.h	int        (*header_cache)(struct device *dev, struct sock *sk, unsigned long saddr, unsigned long daddr);
header_cache	2400	net/ipv4/ip.c	if(rt->rt_dev->header_cache && sk->ip_hcache_state!= -1)
header_cache	2403	net/ipv4/ip.c	rt->rt_dev->header_cache(rt->rt_dev,sk,saddr,daddr);