fib: add cli support for explicit link type

This adds the ability to specify we want an IPv4 route via an IPv6 adj
and vice-versa.

Type: improvement

Change-Id: I5f7f1ab89fc60244d31c26155bbd9b0db690257c
Signed-off-by: Benoît Ganne <bganne@cisco.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/vnet/fib/fib_types.c b/src/vnet/fib/fib_types.c
index 15e795a72c9..7eeb79fffa5 100644
--- a/src/vnet/fib/fib_types.c
+++ b/src/vnet/fib/fib_types.c
@@ -541,6 +541,7 @@ unformat_fib_route_path (unformat_input_t * input, va_list * args)
 {
     fib_route_path_t *rpath = va_arg (*args, fib_route_path_t *);
     dpo_proto_t *payload_proto = va_arg (*args, void*);
+    dpo_proto_t explicit_proto = DPO_PROTO_NONE;
     u32 weight, preference, udp_encap_id, fi;
     mpls_label_t out_label;
     vnet_main_t *vnm;
@@ -726,6 +727,14 @@ unformat_fib_route_path (unformat_input_t * input, va_list * args)
                 vec_add1(rpath->frp_label_stack, fml);
             }
         }
+      else if (unformat (input, "ip4"))
+        {
+	  explicit_proto = DPO_PROTO_IP4;
+        }
+      else if (unformat (input, "ip6"))
+        {
+	  explicit_proto = DPO_PROTO_IP6;
+        }
         else if (unformat (input, "%U",
                            unformat_vnet_sw_interface, vnm,
                            &rpath->frp_sw_if_index))
@@ -750,6 +759,9 @@ unformat_fib_route_path (unformat_input_t * input, va_list * args)
         }
     }
 
+    if (DPO_PROTO_NONE != explicit_proto)
+      *payload_proto = rpath->frp_proto = explicit_proto;
+
     return (1);
 }