644 struct ip_fw {  struct
645 	struct ip_fw	*x_next;	/* linked list of rules		*/  argument
646 	struct ip_fw	*next_rule;	/* ptr to next [skipto] rule	*/  argument
649 	uint16_t	act_ofs;	/* offset of action in 32-bit units */
650 	uint16_t	cmd_len;	/* # of 32-bit words in cmd	*/
651 	uint16_t	rulenum;	/* rule number			*/
652 	uint8_t		set;		/* rule set (0..31)		*/
653 	uint8_t		_pad;		/* padding			*/
654 	uint32_t	id;		/* rule id */
657 	uint64_t	pcnt;		/* Packet counter		*/
658 	uint64_t	bcnt;		/* Byte counter			*/
659 	uint32_t	timestamp;	/* tv_sec of last match		*/
661 	ipfw_insn	cmd[1];		/* storage for commands		*/