X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ffib%2Ffib_path_ext.h;h=b49fd977a204d03b655e0dd1e03bf29a511e0ca4;hb=609e121;hp=d1571a1b4eea4b8f7ce243b737fc71bdb5252acb;hpb=8142499cd1cb3b8d0168d0e6cf5309c5b4813cc4;p=vpp.git

diff --git a/src/vnet/fib/fib_path_ext.h b/src/vnet/fib/fib_path_ext.h
index d1571a1b4ee..b49fd977a20 100644
--- a/src/vnet/fib/fib_path_ext.h
+++ b/src/vnet/fib/fib_path_ext.h
@@ -59,6 +59,32 @@ typedef enum fib_path_ext_adj_flags_t_
          _item <= FIB_PATH_EXT_ADJ_ATTR_REFINES_COVER;  \
          _item++)
 
+/**
+ * Flags present on an MPLS label sourced path-extension
+ */
+typedef enum fib_path_ext_mpls_attr_t_
+{
+    /**
+     * Do not decrement the TTL of IP packet during imposition
+     */
+    FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR,
+} fib_path_ext_mpls_attr_t;
+
+typedef enum fib_path_ext_mpls_flags_t_
+{
+    FIB_PATH_EXT_MPLS_FLAG_NONE = 0,
+    FIB_PATH_EXT_MPLS_FLAG_NO_IP_TTL_DECR = (1 << FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR),
+} fib_path_ext_mpls_flags_t;
+
+#define FIB_PATH_EXT_MPLS_ATTR_NAMES {                               \
+    [FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR] = "no-ip-tll-decr",      \
+}
+
+#define FOR_EACH_PATH_EXT_MPLS_ATTR(_item)                \
+    for (_item = FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR;   \
+         _item <= FIB_PATH_EXT_MPLS_ATTR_NO_IP_TTL_DECR;  \
+         _item++)
+
 /**
  * A path extension is a per-entry addition to the forwarding information
  * when packets are sent for that entry over that path.
@@ -71,11 +97,6 @@ typedef enum fib_path_ext_adj_flags_t_
  */
 typedef struct fib_path_ext_t_
 {
-    /**
-     * The type of path extension
-     */
-    fib_path_ext_type_t fpe_type;
-
     /**
      * A description of the path that is being extended.
      * This description is used to match this extension with the [changing]
@@ -91,14 +112,25 @@ typedef struct fib_path_ext_t_
          * Flags describing the adj state
          */
         fib_path_ext_adj_flags_t fpe_adj_flags;
+        /**
+         * For an MPLS type extension
+         *
+         * Flags describing the mpls state
+         */
+        fib_path_ext_mpls_flags_t fpe_mpls_flags;
     };
 
+    /**
+     * The type of path extension
+     */
+    fib_path_ext_type_t fpe_type;
+
     /**
      * The index of the path. This is the global index, not the path's
      * position in the path-list.
      */
     fib_node_index_t fpe_path_index;
-} __attribute__ ((packed))  fib_path_ext_t;
+} __attribute__ ((packed)) fib_path_ext_t;
 
 extern u8 * format_fib_path_ext(u8 * s, va_list * args);