Add possibility to configure Mesh MAC neighbourtable size.

Accepted values are 5-255. MAC neighbour table size is limited to 8-bit number so thats why 255 is max value.

Author: Juha Heiskanen

features/nanostack/mbed-mesh-api/mbed_lib.json

@@ -6,6 +6,12 @@
             "help": "Nanostack's heap size [bytes: 0-‭4294967295‬]",
             "value": 32500
         },
+        "mac-neigh-table-size": {
+            "help": "Number of devices stored to the SW MAC neighbour table",
+            "value_min": 5,
+            "value_max": 255,
+            "value": 32
+        },
         "use-malloc-for-heap": {
             "help": "Use `malloc()` for reserving the Nanostack's internal heap.",
             "value": false

features/nanostack/mbed-mesh-api/source/nd_tasklet.c

@@ -425,7 +425,7 @@ int8_t nd_tasklet_network_init(int8_t device_id)
 {
     // TODO, read interface name from configuration
     mac_description_storage_size_t storage_sizes;
-    storage_sizes.device_decription_table_size = 32;
+    storage_sizes.device_decription_table_size = MBED_CONF_MBED_MESH_API_MAC_NEIGH_TABLE_SIZE;
     storage_sizes.key_description_table_size = 3;
     storage_sizes.key_lookup_size = 1;
     storage_sizes.key_usage_size = 3;

features/nanostack/mbed-mesh-api/source/thread_tasklet.c

@@ -461,7 +461,7 @@ int8_t thread_tasklet_network_init(int8_t device_id)
 {
     // TODO, read interface name from configuration
     mac_description_storage_size_t storage_sizes;
-    storage_sizes.device_decription_table_size = 32;
+    storage_sizes.device_decription_table_size = MBED_CONF_MBED_MESH_API_MAC_NEIGH_TABLE_SIZE;
     storage_sizes.key_description_table_size = 6;
     storage_sizes.key_lookup_size = 1;
     storage_sizes.key_usage_size = 3;

features/nanostack/mbed-mesh-api/source/wisun_tasklet.c

@@ -39,6 +39,7 @@
 #include MBED_CONF_MBED_MESH_API_CERTIFICATE_HEADER
 #endif
 
+
 // For tracing we need to define flag, have include and define group
 //#define HAVE_DEBUG
 #define TRACE_GROUP  "WSND"
@@ -526,7 +527,7 @@ int8_t wisun_tasklet_network_init(int8_t device_id)
 {
     // TODO, read interface name from configuration
     mac_description_storage_size_t storage_sizes;
-    storage_sizes.device_decription_table_size = 32;
+    storage_sizes.device_decription_table_size = MBED_CONF_MBED_MESH_API_MAC_NEIGH_TABLE_SIZE;
     storage_sizes.key_description_table_size = 4;
     storage_sizes.key_lookup_size = 1;
     storage_sizes.key_usage_size = 3;