tcp_shutdown      317 include/net/tcp.h void tcp_shutdown(struct sock *sk, int how);
tcp_shutdown     2330 net/ipv4/tcp.c EXPORT_SYMBOL(tcp_shutdown);
tcp_shutdown     2583 net/ipv4/tcp_ipv4.c 	.shutdown		= tcp_shutdown,
tcp_shutdown     2017 net/ipv6/tcp_ipv6.c 	.shutdown		= tcp_shutdown,