#define __MPLS_TUNNEL_H__
#include <vnet/mpls/mpls.h>
+#include <vnet/fib/fib_path_ext.h>
+
+typedef enum mpls_tunnel_attribute_t_
+{
+ MPLS_TUNNEL_ATTRIBUTE_FIRST = 0,
+ /**
+ * @brief The tunnel is L2 only
+ */
+ MPLS_TUNNEL_ATTRIBUTE_L2 = MPLS_TUNNEL_ATTRIBUTE_FIRST,
+ /**
+ * @brief The tunnel has an underlying multicast LSP
+ */
+ MPLS_TUNNEL_ATTRIBUTE_MCAST,
+ MPLS_TUNNEL_ATTRIBUTE_LAST = MPLS_TUNNEL_ATTRIBUTE_MCAST,
+} mpls_tunnel_attribute_t;
+
+#define MPLS_TUNNEL_ATTRIBUTES { \
+ [MPLS_TUNNEL_ATTRIBUTE_MCAST] = "multicast", \
+ [MPLS_TUNNEL_ATTRIBUTE_L2] = "L2", \
+}
+#define FOR_EACH_MPLS_TUNNEL_ATTRIBUTE(_item) \
+ for (_item = MPLS_TUNNEL_ATTRIBUTE_FIRST; \
+ _item <= MPLS_TUNNEL_ATTRIBUTE_LAST; \
+ _item++)
+
+typedef enum mpls_tunnel_flag_t_ {
+ MPLS_TUNNEL_FLAG_NONE = 0,
+ MPLS_TUNNEL_FLAG_L2 = (1 << MPLS_TUNNEL_ATTRIBUTE_L2),
+ MPLS_TUNNEL_FLAG_MCAST = (1 << MPLS_TUNNEL_ATTRIBUTE_MCAST),
+} __attribute__ ((packed)) mpls_tunnel_flags_t;
+
/**
* @brief A uni-directional MPLS tunnel
fib_node_t mt_node;
/**
- * @brief If the tunnel is an L2 tunnel, this is the link type ETHERNET
- * adjacency
- */
- adj_index_t mt_l2_adj;
-
- /**
- * @brief on a L2 tunnel this is the VLIB arc from the L2-tx to the l2-midchain
+ * @brief Tunnel flags
*/
- u32 mt_l2_tx_arc;
+ mpls_tunnel_flags_t mt_flags;
/**
- * @brief The path-list over which the tunnel's destination is reachable
+ * @brief If the tunnel is an L2 tunnel, this is the link type ETHERNET
+ * load-balance
*/
- fib_node_index_t mt_path_list;
+ dpo_id_t mt_l2_lb;
/**
- * @brief sibling index on the path-list so notifications are received.
+ * @brief The HW interface index of the tunnel interfaces
*/
- u32 mt_sibling_index;
+ u32 mt_hw_if_index;
/**
- * @brief The Label stack to apply to egress packets
+ * @brief The SW interface index of the tunnel interfaces
*/
- mpls_label_t *mt_label_stack;
+ u32 mt_sw_if_index;
/**
- * @brief Flag to indicate the tunnel is only for L2 traffic, that is
- * this tunnel belongs in a bridge domain.
+ * @brief The path-list over which the tunnel's destination is reachable
*/
- u8 mt_l2_only;
+ fib_node_index_t mt_path_list;
/**
- * @brief The HW interface index of the tunnel interfaces
+ * @brief sibling index on the path-list so notifications are received.
*/
- u32 mt_hw_if_index;
+ u32 mt_sibling_index;
/**
- * @brief The SW interface index of the tunnel interfaces
+ * A vector of path extensions o hold the label stack for each path
*/
- u32 mt_sw_if_index;
-
+ fib_path_ext_list_t mt_path_exts;
} mpls_tunnel_t;
/**
* @brief Create a new MPLS tunnel
+ * @return the SW Interface index of the newly created tuneel
+ */
+extern u32 vnet_mpls_tunnel_create (u8 l2_only,
+ u8 is_multicast);
+
+/**
+ * @brief Add a path to an MPLS tunnel
+ */
+extern void vnet_mpls_tunnel_path_add (u32 sw_if_index,
+ fib_route_path_t *rpath);
+
+/**
+ * @brief remove a path from a tunnel.
+ * @return the number of remaining paths. 0 implies the tunnel can be deleted
*/
-extern void vnet_mpls_tunnel_add (fib_route_path_t *rpath,
- mpls_label_t *label_stack,
- u8 l2_only,
- u32 *sw_if_index);
+extern int vnet_mpls_tunnel_path_remove (u32 sw_if_index,
+ fib_route_path_t *rpath);
+/**
+ * @vrief return the tunnel index from the sw_if_index
+ */
+extern int vnet_mpls_tunnel_get_index (u32 sw_if_index);
+
+/**
+ * @brief Delete an MPLS tunnel
+ */
extern void vnet_mpls_tunnel_del (u32 sw_if_index);
extern const mpls_tunnel_t *mpls_tunnel_get(u32 index);