NAT64: change not supported multi threading behaviour

Disable CLI/API commands instead of error message on startup.

Change-Id: I313ed6e2ea009f573afb5e08b0e85ed1f9091dc3
Signed-off-by: Matus Fabian <matfabia@cisco.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/plugins/snat/snat_api.c b/src/plugins/snat/snat_api.c
index 383df39958b..aa0b59ac4a0 100644
--- a/src/plugins/snat/snat_api.c
+++ b/src/plugins/snat/snat_api.c
@@ -1210,6 +1210,7 @@ static void
 {
   vl_api_nat64_add_del_pool_addr_range_reply_t *rmp;
   snat_main_t *sm = &snat_main;
+  nat64_main_t *nm = &nat64_main;
   int rv = 0;
   ip4_address_t this_addr;
   u32 start_host_order, end_host_order;
@@ -1217,6 +1218,12 @@ static void
   int i, count;
   u32 *tmp;
 
+  if (nm->is_disabled)
+    {
+      rv = VNET_API_ERROR_FEATURE_DISABLED;
+      goto send_reply;
+    }
+
   tmp = (u32 *) mp->start_addr;
   start_host_order = clib_host_to_net_u32 (tmp[0]);
   tmp = (u32 *) mp->end_addr;
@@ -1291,6 +1298,10 @@ static void
 vl_api_nat64_pool_addr_dump_t_handler (vl_api_nat64_pool_addr_dump_t * mp)
 {
   unix_shared_memory_queue_t *q;
+  nat64_main_t *nm = &nat64_main;
+
+  if (nm->is_disabled)
+    return;
 
   q = vl_api_client_index_to_input_queue (mp->client_index);
   if (q == 0)
@@ -1320,9 +1331,16 @@ vl_api_nat64_add_del_interface_t_handler (vl_api_nat64_add_del_interface_t *
 					  mp)
 {
   snat_main_t *sm = &snat_main;
+  nat64_main_t *nm = &nat64_main;
   vl_api_nat64_add_del_interface_reply_t *rmp;
   int rv = 0;
 
+  if (nm->is_disabled)
+    {
+      rv = VNET_API_ERROR_FEATURE_DISABLED;
+      goto send_reply;
+    }
+
   VALIDATE_SW_IF_INDEX (mp);
 
   rv =
@@ -1331,6 +1349,7 @@ vl_api_nat64_add_del_interface_t_handler (vl_api_nat64_add_del_interface_t *
 
   BAD_SW_IF_INDEX_LABEL;
 
+send_reply:
   REPLY_MACRO (VL_API_NAT64_ADD_DEL_INTERFACE_REPLY);
 }
 
@@ -1371,6 +1390,10 @@ static void
 vl_api_nat64_interface_dump_t_handler (vl_api_nat64_interface_dump_t * mp)
 {
   unix_shared_memory_queue_t *q;
+  nat64_main_t *nm = &nat64_main;
+
+  if (nm->is_disabled)
+    return;
 
   q = vl_api_client_index_to_input_queue (mp->client_index);
   if (q == 0)
@@ -1400,11 +1423,18 @@ static void
   (vl_api_nat64_add_del_static_bib_t * mp)
 {
   snat_main_t *sm = &snat_main;
+  nat64_main_t *nm = &nat64_main;
   vl_api_nat64_add_del_static_bib_reply_t *rmp;
   ip6_address_t in_addr;
   ip4_address_t out_addr;
   int rv = 0;
 
+  if (nm->is_disabled)
+    {
+      rv = VNET_API_ERROR_FEATURE_DISABLED;
+      goto send_reply;
+    }
+
   memcpy (&in_addr.as_u8, mp->i_addr, 16);
   memcpy (&out_addr.as_u8, mp->o_addr, 4);
 
@@ -1416,6 +1446,7 @@ static void
 				    clib_net_to_host_u32 (mp->vrf_id),
 				    mp->is_add);
 
+send_reply:
   REPLY_MACRO (VL_API_NAT64_ADD_DEL_STATIC_BIB_REPLY);
 }
 
@@ -1472,6 +1503,9 @@ vl_api_nat64_bib_dump_t_handler (vl_api_nat64_bib_dump_t * mp)
   nat64_main_t *nm = &nat64_main;
   snat_protocol_t proto;
 
+  if (nm->is_disabled)
+    return;
+
   q = vl_api_client_index_to_input_queue (mp->client_index);
   if (q == 0)
     return;
@@ -1500,9 +1534,16 @@ static void
 vl_api_nat64_set_timeouts_t_handler (vl_api_nat64_set_timeouts_t * mp)
 {
   snat_main_t *sm = &snat_main;
+  nat64_main_t *nm = &nat64_main;
   vl_api_nat64_set_timeouts_reply_t *rmp;
   int rv = 0;
 
+  if (nm->is_disabled)
+    {
+      rv = VNET_API_ERROR_FEATURE_DISABLED;
+      goto send_reply;
+    }
+
   rv = nat64_set_icmp_timeout (ntohl (mp->icmp));
   if (rv)
     goto send_reply;
@@ -1536,9 +1577,13 @@ static void
 vl_api_nat64_get_timeouts_t_handler (vl_api_nat64_get_timeouts_t * mp)
 {
   snat_main_t *sm = &snat_main;
+  nat64_main_t *nm = &nat64_main;
   vl_api_nat64_get_timeouts_reply_t *rmp;
   int rv = 0;
 
+  if (nm->is_disabled)
+    return;
+
   /* *INDENT-OFF* */
   REPLY_MACRO2 (VL_API_NAT64_GET_TIMEOUTS_REPLY,
   ({
@@ -1605,6 +1650,9 @@ vl_api_nat64_st_dump_t_handler (vl_api_nat64_st_dump_t * mp)
   nat64_main_t *nm = &nat64_main;
   snat_protocol_t proto;
 
+  if (nm->is_disabled)
+    return;
+
   q = vl_api_client_index_to_input_queue (mp->client_index);
   if (q == 0)
     return;