Downlink IP traffic flow using LTE RAN stack over NR-PHY. Downlink traffic reaching PHY of gNB now using the noS1 mode. Extensions required for the reception through the LTE RAN stack at the UE side.

openair2/NETWORK_DRIVER/MESH/classifier.c

@@ -634,7 +634,7 @@ void nas_CLASS_send(struct sk_buff *skb,int inst)
 
   printk("[NAS][CLASS][SEND] Got packet from kernel:\n");
 
-  for (i=0; i<256; i++)
+  for (int i=0; i<256; i++)
     printk("%2x ",((unsigned char *)skb->data)[i]);
 
   printk("\n");
@@ -790,6 +790,7 @@ void nas_CLASS_send(struct sk_buff *skb,int inst)
              dscp, sprotocol, sp->classref, sfct, sp->rab_id);
 #endif
 
+      //printk(" About to trigger a new message sending through nas_CLASS_send \n \n");
       sp->fct(skb, cx, sp,inst, NULL);
 
     } // if classifier entry match found

openair2/NETWORK_DRIVER/MESH/common.c

@@ -387,6 +387,11 @@ void nas_COMMON_QOS_send(struct sk_buff *skb, struct cx_entity *cx, struct class
   pdcph.data_size  = skb->len;
   pdcph.rb_id      = (gc->rb)->rab_id;
   pdcph.inst       = inst;
+#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
+  pdcph.sourceL2Id = 0;
+  pdcph.destinationL2Id = 0;
+#endif
+
 
 
 #ifdef PDCP_USE_NETLINK

openair2/NETWORK_DRIVER/MESH/local.h

@@ -160,6 +160,10 @@ typedef struct pdcp_data_req_header_s {
   sdu_size_t          data_size;
   signed int          inst;
   ip_traffic_type_t   traffic_type;
+#if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
+  uint32_t sourceL2Id;
+  uint32_t destinationL2Id;
+#endif
 } pdcp_data_req_header_t;
 
 typedef struct pdcp_data_ind_header_s {

openair2/NETWORK_DRIVER/MESH/netlink.c

@@ -161,7 +161,7 @@ int nas_netlink_send(unsigned char *data,unsigned int len)
   int status;
 
 
-  //  printk("[NAS][NETLINK] Sending %d bytes (%d)\n",len,NLMSG_SPACE(len));
+    //printk("[NAS][NETLINK] Sending %d bytes (%d)\n",len,NLMSG_SPACE(len));
   skb_put(nl_skb, NLMSG_SPACE(len));
   memcpy(NLMSG_DATA(nlh),data,len);