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-rw-r--r--include/netinet/ip.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/netinet/ip.h b/include/netinet/ip.h
index 41187414..d7fa8d5e 100644
--- a/include/netinet/ip.h
+++ b/include/netinet/ip.h
@@ -104,6 +104,18 @@ struct ip_timestamp {
 #define	IPTOS_DSCP_AF43		0x98
 #define	IPTOS_DSCP_EF		0xb8
 
+#define	IPTOS_CLASS_MASK	0xe0
+#define	IPTOS_CLASS(x)		((x) & IPTOS_CLASS_MASK)
+#define	IPTOS_CLASS_CS0		0x00
+#define	IPTOS_CLASS_CS1		0x20
+#define	IPTOS_CLASS_CS2		0x40
+#define	IPTOS_CLASS_CS3		0x60
+#define	IPTOS_CLASS_CS4		0x80
+#define	IPTOS_CLASS_CS5		0xa0
+#define	IPTOS_CLASS_CS6		0xc0
+#define	IPTOS_CLASS_CS7		0xe0
+#define	IPTOS_CLASS_DEFAULT	IPTOS_CLASS_CS0
+
 #define	IPTOS_TOS_MASK		0x1E
 #define	IPTOS_TOS(tos)		((tos) & IPTOS_TOS_MASK)
 #define	IPTOS_LOWDELAY		0x10