Adapatation neighbor validation update:

Drop a packet if neighbor is unknow and wi-sun stack is enabled.

Simplify that that broadcast address check is done only 1 time.

Updated Unit test code for new feature.

Author: Juha Heiskanen

source/6LoWPAN/adaptation_interface.c

@@ -43,7 +43,6 @@
 #ifdef HAVE_RPL
 #include "RPL/rpl_data.h"
 #endif
-#include "6LoWPAN/ws/ws_common.h"
 #include "Service_Libs/mac_neighbor_table/mac_neighbor_table.h"
 #include "6LoWPAN/Thread/thread_common.h"
 #include "6LoWPAN/ws/ws_common.h"
@@ -613,40 +612,35 @@ buffer_t * lowpan_adaptation_data_process_tx_preprocess(protocol_interface_info_
 {
     mac_neighbor_table_entry_t *neigh_entry_ptr = NULL;
 
+
     //Validate is link known and set indirect, datareq and security key id mode
     if (buf->dst_sa.addr_type == ADDR_NONE) {
         goto tx_error_handler;
     }
 
-    /* If MLE is enabled, we will talk if we have an MLE association */
-    if (buf->dst_sa.addr_type == ADDR_802_15_4_LONG ) {
-        neigh_entry_ptr = mac_neighbor_table_address_discover(mac_neighbor_info(cur), buf->dst_sa.address + 2, buf->dst_sa.addr_type);
+    if (addr_check_broadcast(buf->dst_sa.address, buf->dst_sa.addr_type) == eOK ) {
+        buf->dst_sa.addr_type = ADDR_802_15_4_SHORT;
+        buf->dst_sa.address[2] = 0xff;
+        buf->dst_sa.address[3] = 0xff;
+        buf->link_specific.ieee802_15_4.indirectTxProcess = false;
+        buf->link_specific.ieee802_15_4.requestAck = false;
+    } else {
 
-    } else if(buf->dst_sa.addr_type == ADDR_802_15_4_SHORT && (common_read_16_bit(buf->dst_sa.address + 2)) != 0xffff) {
         neigh_entry_ptr = mac_neighbor_table_address_discover(mac_neighbor_info(cur), buf->dst_sa.address + 2, buf->dst_sa.addr_type);
-    }
 
-    //Validate neighbour
-    if (!buf->options.ll_security_bypass_tx && neigh_entry_ptr) {
+        //Validate neighbour
+        if (!buf->options.ll_security_bypass_tx && neigh_entry_ptr) {
 
-        if (neigh_entry_ptr->connected_device ||  neigh_entry_ptr->trusted_device) {
+            if (neigh_entry_ptr->connected_device ||  neigh_entry_ptr->trusted_device) {
 
-        } else {
-            //tr_warn("Drop TX to unassociated %s", trace_sockaddr(&buf->dst_sa, true));
+            } else {
+                //tr_warn("Drop TX to unassociated %s", trace_sockaddr(&buf->dst_sa, true));
+                goto tx_error_handler;
+            }
+        } else if (ws_info(cur) && !neigh_entry_ptr) {
+            //Do not accept to send unknow device
             goto tx_error_handler;
         }
-    }
-
-    //Check indirect
-
-
-    if (addr_check_broadcast(buf->dst_sa.address, buf->dst_sa.addr_type) == eOK) {
-        buf->dst_sa.addr_type = ADDR_802_15_4_SHORT;
-        buf->dst_sa.address[2] = 0xff;
-        buf->dst_sa.address[3] = 0xff;
-        buf->link_specific.ieee802_15_4.indirectTxProcess = false;
-        buf->link_specific.ieee802_15_4.requestAck = false;
-    } else {
         buf->link_specific.ieee802_15_4.requestAck = true;
         buf->link_specific.ieee802_15_4.indirectTxProcess = lowpan_adaptation_indirect_data_request(neigh_entry_ptr);
     }

test/nanostack/unittest/6LoWPAN/adaptation_interface/test_adaptation_interface.c

@@ -39,6 +39,7 @@
 #include "common_functions_stub.h"
 #include "thread_common_stub.h"
 #include "mac_neighbor_table_stub.h"
+#include "6LoWPAN/ws/ws_common.h"
 
 
 static int mcps_data_req_cnt = 0;
@@ -183,6 +184,18 @@ bool test_lowpan_adapatation_data_process_tx_preprocess()
         return false;
     }
 
+    //TEST Unknow neighbor and wi-sun stack
+    address_stub.uint8_value = 2;
+    buf.dst_sa.addr_type = ADDR_802_15_4_SHORT;
+    buf.options.ll_security_bypass_tx = false;
+    socket_stub.buffer_ptr = &buf;
+    ws_info_t test_info;
+    entry.ws_info = &test_info;
+    if (lowpan_adaptation_data_process_tx_preprocess(&entry, &buf)) {
+        return false;
+    }
+
+    entry.ws_info = NULL;
     mac_neighbor_table_entry_t neighbor;
     memset(&neighbor, 0, sizeof(mac_neighbor_table_entry_t));
     mac_neighbor_table_stub.test_neigh = &neighbor;