[Feature][YUKUAI_patch]add 18.02 code

Only Configure: No
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I7f71153004f10fc0ea5adfa083866aaeeb1053ac
diff --git a/rootfs/etc/iproute2/rt_dsfield b/rootfs/etc/iproute2/rt_dsfield
new file mode 100644
index 0000000..1426d60
--- /dev/null
+++ b/rootfs/etc/iproute2/rt_dsfield
@@ -0,0 +1,26 @@
+# Differentiated field values
+# These include the DSCP and unused bits
+0x0	default
+# Newer RFC2597 values
+0x28	AF11
+0x30	AF12
+0x38	AF13
+0x48	AF21
+0x50	AF22
+0x58	AF23
+0x68	AF31
+0x70	AF32
+0x78	AF33
+0x88	AF41
+0x90	AF42
+0x98	AF43
+# Older values RFC2474
+0x20	CS1
+0x40	CS2
+0x60	CS3
+0x80	CS4
+0xA0	CS5
+0xC0	CS6
+0xE0	CS7
+# RFC 2598
+0xB8	EF