tcp_v4_connect    424 include/net/tcp.h extern int			tcp_v4_connect(struct sock *sk,
tcp_v4_connect   2357 net/ipv4/tcp_ipv4.c 	.connect		= tcp_v4_connect,
tcp_v4_connect    217 net/ipv6/tcp_ipv6.c 		err = tcp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));