733 struct ip_fw {  struct
734 	struct ip_fw	*x_next;	/* linked list of rules		*/  argument
735 	struct ip_fw	*next_rule;	/* ptr to next [skipto] rule	*/  argument
738 	uint16_t	act_ofs;	/* offset of action in 32-bit units */
739 	uint16_t	cmd_len;	/* # of 32-bit words in cmd	*/
740 	uint16_t	rulenum;	/* rule number			*/
741 	uint8_t		set;		/* rule set (0..31)		*/
742 	uint8_t		_pad;		/* padding			*/
743 	uint32_t	id;		/* rule id */
746 	uint64_t	pcnt;		/* Packet counter		*/
747 	uint64_t	bcnt;		/* Byte counter			*/
748 	uint32_t	timestamp;	/* tv_sec of last match		*/
750 	ipfw_insn	cmd[1];		/* storage for commands		*/