X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=src%2Fvnet%2Fip%2Fip_packet.h;h=9a55d5f644e317115438eb6a2076593f376b7675;hp=63a59f87668beff01850b6bdc195143fa08fe6c5;hb=9534696b4;hpb=c8972fe506c78530a3e4085453e86a0b85b245ef

diff --git a/src/vnet/ip/ip_packet.h b/src/vnet/ip/ip_packet.h
index 63a59f87668..9a55d5f644e 100644
--- a/src/vnet/ip/ip_packet.h
+++ b/src/vnet/ip/ip_packet.h
@@ -118,10 +118,35 @@ typedef enum ip_dscp_t_
 #undef _
 } __clib_packed ip_dscp_t;
 
-STATIC_ASSERT_SIZEOF (ip_dscp_t, 1);
-
 extern u8 *format_ip_dscp (u8 * s, va_list * va);
 
+/**
+ * IP DSCP bit shift
+ *  The ECN occupies the 2 least significant bits of the TC field
+ */
+#define IP_PACKET_TC_FIELD_DSCP_BIT_SHIFT 2
+#define IP_PACKET_TC_FIELD_ECN_MASK 0x03
+
+/**
+ * The set of RFC defined DSCP values.
+ */
+#define foreach_ip_ecn                        \
+  _(0, NON_ECN)                               \
+  _(1, ECT_0)                                 \
+  _(2, ECT_1)                                 \
+  _(3, CE)
+
+typedef enum ip_ecn_t_
+{
+#define _(n,f) IP_ECN_##f = n,
+  foreach_ip_ecn
+#undef _
+} __clib_packed ip_ecn_t;
+
+STATIC_ASSERT_SIZEOF (ip_ecn_t, 1);
+
+extern u8 *format_ip_ecn (u8 * s, va_list * va);
+
 /* IP checksum support. */
 
 static_always_inline u16