tcp_poll          375 include/net/tcp.h extern unsigned int		tcp_poll(struct file * file, struct socket *sock, struct poll_table_struct *wait);
tcp_poll          850 net/ipv4/af_inet.c 	.poll		   = tcp_poll,
tcp_poll          477 net/ipv6/af_inet6.c 	.poll		   = tcp_poll,			/* ok		*/