Filling rach_ind and sending to proxy

Seems to be working at the moment but
may need to add more info in the rach_ind.
Also, need to verify gNB is getting the
rach_ind and starting RA procedure.

executables/nr-ue.c

@@ -179,6 +179,17 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
 
     if (nr_prach == 1)
     {
+      nfapi_nr_rach_indication_t rach_ind = {
+        .header = {
+          .message_id = NFAPI_NR_PHY_MSG_TYPE_RACH_INDICATION,
+        },
+        .sfn             = frame_tx,
+        .slot            = nr_slot_tx,
+        .pdu_list        = NULL,
+        .number_of_pdus  = 0,
+      };
+      send_nsa_standalone_msg(&rach_ind);
+
       /* Fill rach indication here and send to proxy. Basically take pieces from
       L1_nr_prach_procedures() and send it to the proxy. prach from ue->gNb->gnb sends rach->ue receives rach
       The UE is basically filling the rach and proxy will receive and think that it came from the gNB. The

openair2/NR_UE_PHY_INTERFACE/NR_IF_Module.c

@@ -127,7 +127,18 @@ void nrue_init_standalone_socket(const char *addr, int tx_port, int rx_port)
         tx_port, rx_port, addr);
 }
 
-
+void send_nsa_standalone_msg(nfapi_nr_rach_indication_t *rach_ind)
+{
+    char buffer[NFAPI_MAX_PACKED_MESSAGE_SIZE];
+    int encoded_size = nfapi_nr_p7_message_pack(rach_ind, buffer, sizeof(buffer), NULL);
+    LOG_I(NR_MAC, "NR_RACH_IND sent to Proxy, Size: %d Frame %d Subframe %d\n", encoded_size,
+          rach_ind->sfn, rach_ind->slot);
+    if (send(ue_tx_sock_descriptor, buffer, encoded_size, 0) < 0)
+    {
+        LOG_E(NR_MAC, "Send Proxy NR_UE failed\n");
+        return;
+    }
+}
 static void save_nr_measurement_info(nfapi_nr_dl_tti_request_t *dl_tti_request)
 {
     int num_pdus = dl_tti_request->dl_tti_request_body.nPDUs;

openair2/NR_UE_PHY_INTERFACE/NR_IF_Module.h

@@ -218,6 +218,8 @@ typedef struct nfapi_dl_tti_config_req_tx_data_req_t
     nfapi_nr_tx_data_request_t *tx_data_req_pdu_list;
 } nfapi_dl_tti_config_req_tx_data_req_t;
 
+void send_nsa_standalone_msg(nfapi_nr_rach_indication_t *rach_ind);
+
 /**\brief done free of memory allocation by module_id and release to pointer pool.
    \param module_id module id*/
 int nr_ue_if_module_kill(uint32_t module_id);