SIOCMATCHFLUSH (reference) in projects: freebsd-12.1

381 				if (ioctl(fd, SIOCMATCHFLUSH, &obj) == -1) {

79 # define	SIOCMATCHFLUSH	_IOWR('r', 97, struct ipfobj)  macro
119 # define	SIOCMATCHFLUSH	_IOWR(r, 97, struct ipfobj)  macro

1307 	case SIOCMATCHFLUSH :

/freebsd-12.1/contrib/ipfilter/tools/
H A D	ipf.c	`381 if (ioctl(fd, SIOCMATCHFLUSH, &obj) == -1) {`
H A D	ipnat.c	`305 if (ioctl(fd, SIOCMATCHFLUSH, &obj) == -1) {`
/freebsd-12.1/sys/contrib/ipfilter/netinet/
H A D	ip_fil.h	`79 # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj) macro 119 # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj) macro`
H A D	ip_state.c	`657 case SIOCMATCHFLUSH :`
H A D	ip_nat.c	`1307 case SIOCMATCHFLUSH :`