dccp_ioctl        302 net/dccp/dccp.h extern int	   dccp_ioctl(struct sock *sk, int cmd, unsigned long arg);
dccp_ioctl        925 net/dccp/ipv4.c 	.ioctl			= dccp_ioctl,
dccp_ioctl       1125 net/dccp/ipv6.c 	.ioctl		   = dccp_ioctl,