linux/netfilter/xt_connlabel.h

#include <linux/types.h>

#define XT_CONNLABEL_MAXBIT 127
enum xt_connlabel_mtopts {
	XT_CONNLABEL_OP_INVERT = 1 << 0,
	XT_CONNLABEL_OP_SET    = 1 << 1,
};

struct xt_connlabel_mtinfo {
	__u16 bit;
	__u16 options;
};