L2 over MPLS

[support for VPWS/VPLS]
- switch to using dpo_proto_t rather than fib_protocol_t in fib_paths so that we can describe L2 paths
- VLIB nodes to handle pop/push of MPLS labels to L2

Change-Id: Id050d06a11fd2c9c1c81ce5a0654e6c5ae6afa6e
Signed-off-by: Neale Ranns <nranns@cisco.com>

3 files changed, 15 insertions, 13 deletions

diff --git a/src/vnet/lisp-gpe/lisp_gpe.c b/src/vnet/lisp-gpe/lisp_gpe.c
index 0acc73491b9..018895ad911 100644
--- a/src/vnet/lisp-gpe/lisp_gpe.c
+++ b/src/vnet/lisp-gpe/lisp_gpe.c
@@ -454,7 +454,7 @@ vnet_gpe_add_del_native_fwd_rpath (vnet_gpe_native_fwd_rpath_args_t * a)
   fib_route_path_t *rpath;
   u8 ip_version;
 
-  ip_version = a->rpath.frp_proto == FIB_PROTOCOL_IP4 ? IP4 : IP6;
+  ip_version = a->rpath.frp_proto == DPO_PROTO_IP4 ? IP4 : IP6;
 
   if (a->is_add)
     {
@@ -511,7 +511,7 @@ gpe_native_forward_command_fn (vlib_main_t * vm, unformat_input_t * input,
 			 &rpath.frp_sw_if_index))
 	{
 	  rpath.frp_weight = 1;
-	  rpath.frp_proto = FIB_PROTOCOL_IP4;
+	  rpath.frp_proto = DPO_PROTO_IP4;
 	}
       else if (unformat (line_input, "via %U %U",
 			 unformat_ip6_address,
@@ -520,21 +520,21 @@ gpe_native_forward_command_fn (vlib_main_t * vm, unformat_input_t * input,
 			 &rpath.frp_sw_if_index))
 	{
 	  rpath.frp_weight = 1;
-	  rpath.frp_proto = FIB_PROTOCOL_IP6;
+	  rpath.frp_proto = DPO_PROTO_IP6;
 	}
       else if (unformat (line_input, "via %U",
 			 unformat_ip4_address, &rpath.frp_addr.ip4))
 	{
 	  rpath.frp_weight = 1;
 	  rpath.frp_sw_if_index = ~0;
-	  rpath.frp_proto = FIB_PROTOCOL_IP4;
+	  rpath.frp_proto = DPO_PROTO_IP4;
 	}
       else if (unformat (line_input, "via %U",
 			 unformat_ip6_address, &rpath.frp_addr.ip6))
 	{
 	  rpath.frp_weight = 1;
 	  rpath.frp_sw_if_index = ~0;
-	  rpath.frp_proto = FIB_PROTOCOL_IP6;
+	  rpath.frp_proto = DPO_PROTO_IP6;
 	}
       else
 	{
@@ -549,7 +549,8 @@ gpe_native_forward_command_fn (vlib_main_t * vm, unformat_input_t * input,
     }
   else
     {
-      rpath.frp_fib_index = fib_table_find (rpath.frp_proto, table_id);
+      rpath.frp_fib_index =
+	fib_table_find (dpo_proto_to_fib (rpath.frp_proto), table_id);
       if ((u32) ~ 0 == rpath.frp_fib_index)
 	{
 	  error = clib_error_return (0, "Nonexistent table id %d", table_id);
diff --git a/src/vnet/lisp-gpe/lisp_gpe_api.c b/src/vnet/lisp-gpe/lisp_gpe_api.c
index f1663699ae6..4367a7194d9 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_api.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_api.c
@@ -455,10 +455,10 @@ static void
     clib_memcpy (&a->rpath.frp_addr.ip6, mp->nh_addr, sizeof (ip6_address_t));
 
   a->is_add = mp->is_add;
-  a->rpath.frp_proto = mp->is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
-  a->rpath.frp_fib_index = fib_table_find (a->rpath.frp_proto,
-					   clib_net_to_host_u32
-					   (mp->table_id));
+  a->rpath.frp_proto = mp->is_ip4 ? DPO_PROTO_IP4 : DPO_PROTO_IP6;
+  a->rpath.frp_fib_index =
+    fib_table_find (dpo_proto_to_fib (a->rpath.frp_proto),
+		    clib_net_to_host_u32 (mp->table_id));
   if (~0 == a->rpath.frp_fib_index)
     {
       rv = VNET_API_ERROR_INVALID_VALUE;
@@ -484,7 +484,7 @@ gpe_native_fwd_rpaths_copy (vl_api_gpe_native_fwd_rpath_t * dst,
   vec_foreach (e, src)
   {
     memset (&dst[i], 0, sizeof (*dst));
-    table = fib_table_get (e->frp_fib_index, e->frp_proto);
+    table = fib_table_get (e->frp_fib_index, dpo_proto_to_fib (e->frp_proto));
     dst[i].fib_index = table->ft_table_id;
     dst[i].nh_sw_if_index = e->frp_sw_if_index;
     dst[i].is_ip4 = is_ip4;
diff --git a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
index 395b493a719..ac04814999e 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
@@ -225,6 +225,7 @@ lisp_gpe_mk_fib_paths (const lisp_fwd_path_t * paths)
 {
   const lisp_gpe_adjacency_t *ladj;
   fib_route_path_t *rpaths = NULL;
+  fib_protocol_t fp;
   u8 best_priority;
   u32 ii;
 
@@ -239,9 +240,9 @@ lisp_gpe_mk_fib_paths (const lisp_fwd_path_t * paths)
 
     ladj = lisp_gpe_adjacency_get (paths[ii].lisp_adj);
 
-    ip_address_to_46 (&ladj->remote_rloc,
-		      &rpaths[ii].frp_addr, &rpaths[ii].frp_proto);
+    ip_address_to_46 (&ladj->remote_rloc, &rpaths[ii].frp_addr, &fp);
 
+    rpaths[ii].frp_proto = fib_proto_to_dpo (fp);
     rpaths[ii].frp_sw_if_index = ladj->sw_if_index;
     rpaths[ii].frp_weight = (paths[ii].weight ? paths[ii].weight : 1);
   }