NF_STOP            17 include/uapi/linux/netfilter.h #define NF_MAX_VERDICT NF_STOP
NF_STOP           335 net/netfilter/nf_queue.c 	case NF_STOP:
NF_STOP           233 net/netfilter/nfnetlink_queue.c 	    verdict == NF_STOP) {