taglinefilesource code
ip_hcache_ver205include/net/sock.hunsigned long   *ip_hcache_ver;    /* Pointer to version of cache */
ip_hcache_ver236net/ethernet/eth.csk->ip_hcache_ver=&arp_cache_stamp;
ip_hcache_ver706net/ipv4/af_inet.csk->ip_hcache_ver= 0;
ip_hcache_ver3147net/ipv4/ip.csk->ip_hcache_ver=NULL;
ip_hcache_ver3160net/ipv4/ip.cif(sk->ip_hcache_ver==NULL || sk->ip_hcache_stamp!=*sk->ip_hcache_ver)