Add basic support for DS-Lite CE (VPP-1059)

Change-Id: Ifcca60da3f77c0a4959f98b3365c846badbdc2d0
Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/src/plugins/nat/dslite_dpo.c b/src/plugins/nat/dslite_dpo.c
index 376d7174858..97ebb18cf70 100644
--- a/src/plugins/nat/dslite_dpo.c
+++ b/src/plugins/nat/dslite_dpo.c
@@ -17,6 +17,7 @@
 #include <nat/dslite_dpo.h>
 
 dpo_type_t dslite_dpo_type;
+dpo_type_t dslite_ce_dpo_type;
 
 void
 dslite_dpo_create (dpo_proto_t dproto, u32 aftr_index, dpo_id_t * dpo)
@@ -24,6 +25,12 @@ dslite_dpo_create (dpo_proto_t dproto, u32 aftr_index, dpo_id_t * dpo)
   dpo_set (dpo, dslite_dpo_type, dproto, aftr_index);
 }
 
+void
+dslite_ce_dpo_create (dpo_proto_t dproto, u32 b4_index, dpo_id_t * dpo)
+{
+  dpo_set (dpo, dslite_ce_dpo_type, dproto, b4_index);
+}
+
 u8 *
 format_dslite_dpo (u8 * s, va_list * args)
 {
@@ -33,6 +40,15 @@ format_dslite_dpo (u8 * s, va_list * args)
   return (format (s, "DS-Lite: AFTR:%d", index));
 }
 
+u8 *
+format_dslite_ce_dpo (u8 * s, va_list * args)
+{
+  index_t index = va_arg (*args, index_t);
+  CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
+
+  return (format (s, "DS-Lite: B4:%d", index));
+}
+
 static void
 dslite_dpo_lock (dpo_id_t * dpo)
 {
@@ -43,12 +59,28 @@ dslite_dpo_unlock (dpo_id_t * dpo)
 {
 }
 
+static void
+dslite_ce_dpo_lock (dpo_id_t * dpo)
+{
+}
+
+static void
+dslite_ce_dpo_unlock (dpo_id_t * dpo)
+{
+}
+
 const static dpo_vft_t dslite_dpo_vft = {
   .dv_lock = dslite_dpo_lock,
   .dv_unlock = dslite_dpo_unlock,
   .dv_format = format_dslite_dpo,
 };
 
+const static dpo_vft_t dslite_ce_dpo_vft = {
+  .dv_lock = dslite_ce_dpo_lock,
+  .dv_unlock = dslite_ce_dpo_unlock,
+  .dv_format = format_dslite_ce_dpo,
+};
+
 const static char *const dslite_ip4_nodes[] = {
   "dslite-out2in",
   NULL,
@@ -59,16 +91,34 @@ const static char *const dslite_ip6_nodes[] = {
   NULL,
 };
 
+const static char *const dslite_ce_ip4_nodes[] = {
+  "dslite-ce-encap",
+  NULL,
+};
+
+const static char *const dslite_ce_ip6_nodes[] = {
+  "dslite-ce-decap",
+  NULL,
+};
+
 const static char *const *const dslite_nodes[DPO_PROTO_NUM] = {
   [DPO_PROTO_IP4] = dslite_ip4_nodes,
   [DPO_PROTO_IP6] = dslite_ip6_nodes,
   [DPO_PROTO_MPLS] = NULL,
 };
 
+const static char *const *const dslite_ce_nodes[DPO_PROTO_NUM] = {
+  [DPO_PROTO_IP4] = dslite_ce_ip4_nodes,
+  [DPO_PROTO_IP6] = dslite_ce_ip6_nodes,
+  [DPO_PROTO_MPLS] = NULL,
+};
+
 void
 dslite_dpo_module_init (void)
 {
   dslite_dpo_type = dpo_register_new_type (&dslite_dpo_vft, dslite_nodes);
+  dslite_ce_dpo_type = dpo_register_new_type (&dslite_ce_dpo_vft,
+					      dslite_ce_nodes);
 }
 
 /*