tcp4_md5sig_key  1077 include/net/tcp.h 	struct tcp4_md5sig_key	*keys4;
tcp4_md5sig_key   835 net/ipv4/tcp_ipv4.c 	struct tcp4_md5sig_key *keys;
tcp4_md5sig_key   916 net/ipv4/tcp_ipv4.c 					 sizeof(struct tcp4_md5sig_key));