tcp_parse_md5sig_option  400 include/net/tcp.h extern u8			*tcp_parse_md5sig_option(struct tcphdr *th);
tcp_parse_md5sig_option 1117 net/ipv4/tcp_ipv4.c 	hash_location = tcp_parse_md5sig_option(th);
tcp_parse_md5sig_option  852 net/ipv6/tcp_ipv6.c 	hash_location = tcp_parse_md5sig_option(th);