X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fmpls%2Fmpls_types.h;h=c21bdf1eace063d991382a99ecfe85cde99c5305;hb=31ed74407643595fdce206e9d7487108fb8b33ab;hp=f1c3191e00cff60fc33e0365b49a927224f3a42c;hpb=8f931a47b0fa58d5d33a792062650a42ff8bef70;p=vpp.git

diff --git a/src/vnet/mpls/mpls_types.h b/src/vnet/mpls/mpls_types.h
index f1c3191e00c..c21bdf1eace 100644
--- a/src/vnet/mpls/mpls_types.h
+++ b/src/vnet/mpls/mpls_types.h
@@ -47,6 +47,14 @@
 
 #define MPLS_LABEL_INVALID (MPLS_IETF_MAX_LABEL+1)
 
+/**
+ * A value that is explicit about the end of the LSP. Specifying
+ * a label value is needed when the mode configuration (pipe/uniform)
+ * is also requested.
+ * imp-null implies a label swap. pop can be used for a deag.
+ */
+#define MPLS_LABEL_POP (MPLS_IETF_MAX_LABEL+2)
+
 #define MPLS_LABEL_IS_REAL(_lbl) \
     (((_lbl) > MPLS_IETF_MIN_UNRES_LABEL) &&	\
      ((_lbl) <= MPLS_IETF_MAX_UNRES_LABEL))