Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*
gnb_app.c
-------------------
AUTHOR : Laurent Winckel, Sebastien ROUX, Lionel GAUTHIER, Navid Nikaein, WEI-TAI CHEN
COMPANY : EURECOM, NTUST
EMAIL : Lionel.Gauthier@eurecom.fr and Navid Nikaein, kroempa@gmail.com
*/
#include <string.h>
#include <stdio.h>
#include <nr_pdcp/nr_pdcp.h>
#include <softmodem-common.h>
#include <nr-softmodem.h>
#include "gnb_app.h"
#include "assertions.h"
#include "common/ran_context.h"
#include "common/utils/LOG/log.h"
#include "x2ap_eNB.h"
#include "intertask_interface.h"
#include "ngap_gNB.h"
#include "sctp_eNB_task.h"
#include "openair3/ocp-gtpu/gtp_itf.h"
#include "PHY/INIT/phy_init.h"
#include "f1ap_cu_task.h"
#include "f1ap_du_task.h"
#include "nfapi/oai_integration/vendor_ext.h"
#include <openair2/LAYER2/nr_pdcp/nr_pdcp.h>
#include "openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.h"
#include "openair2/E1AP/e1ap.h"
#include "gnb_config.h"
extern unsigned char NB_gNB_INST;
extern RAN_CONTEXT_t RC;
#define GNB_REGISTER_RETRY_DELAY 10
/*------------------------------------------------------------------------------*/
void configure_nr_rrc(uint32_t gnb_id)
{
MessageDef *msg_p = NULL;
// int CC_id;
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, NRRRC_CONFIGURATION_REQ);
if (RC.nrrrc[gnb_id]) {
RCconfig_NRRRC(msg_p,gnb_id, RC.nrrrc[gnb_id]);
LOG_I(GNB_APP, "RRC starting with node type %d\n", RC.nrrrc[gnb_id]->node_type);
LOG_I(GNB_APP,"Sending configuration message to NR_RRC task\n");
itti_send_msg_to_task (TASK_RRC_GNB, GNB_MODULE_ID_TO_INSTANCE(gnb_id), msg_p);
}
else AssertFatal(0,"NRRRC context for gNB %u not allocated\n",gnb_id);
}
/*------------------------------------------------------------------------------*/
uint32_t gNB_app_register(uint32_t gnb_id_start, uint32_t gnb_id_end)//, const Enb_properties_array_t *enb_properties)
{
uint32_t gnb_id;
MessageDef *msg_p;
uint32_t register_gnb_pending = 0;
for (gnb_id = gnb_id_start; (gnb_id < gnb_id_end) ; gnb_id++) {
{
if(get_softmodem_params()->sa){
ngap_register_gnb_req_t *ngap_register_gNB; //Type Temporarily reuse
// note: there is an implicit relationship between the data structure and the message name
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, NGAP_REGISTER_GNB_REQ); //Message Temporarily reuse
RCconfig_NR_NG(msg_p, gnb_id);
ngap_register_gNB = &NGAP_REGISTER_GNB_REQ(msg_p); //Message Temporarily reuse
LOG_I(GNB_APP,"default drx %d\n",ngap_register_gNB->default_drx);
itti_send_msg_to_task (TASK_NGAP, GNB_MODULE_ID_TO_INSTANCE(gnb_id), msg_p);
}
}
LOG_I(GNB_APP,"[gNB %d] gNB_app_register for instance %d\n", gnb_id, GNB_MODULE_ID_TO_INSTANCE(gnb_id));
register_gnb_pending++;
}
return register_gnb_pending;
}
/*------------------------------------------------------------------------------*/
uint32_t gNB_app_register_x2(uint32_t gnb_id_start, uint32_t gnb_id_end) {
uint32_t gnb_id;
MessageDef *msg_p;
uint32_t register_gnb_x2_pending = 0;
for (gnb_id = gnb_id_start; (gnb_id < gnb_id_end) ; gnb_id++) {
{
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, X2AP_REGISTER_ENB_REQ);
LOG_I(X2AP, "GNB_ID: %d \n", gnb_id);
RCconfig_NR_X2(msg_p, gnb_id);
itti_send_msg_to_task (TASK_X2AP, ENB_MODULE_ID_TO_INSTANCE(gnb_id), msg_p);
register_gnb_x2_pending++;
}
}
return register_gnb_x2_pending;
}
/*------------------------------------------------------------------------------*/
void *gNB_app_task(void *args_p)
{
MessageDef *msg_p = NULL;
const char *msg_name = NULL;
instance_t instance;
int result;
/* for no gcc warnings */
(void)instance;
int cell_to_activate = 0;
itti_mark_task_ready (TASK_GNB_APP);
ngran_node_t node_type = get_node_type();
if (RC.nb_nr_inst > 0) {
if (node_type == ngran_gNB_CUCP ||
node_type == ngran_gNB_CU ||
node_type == ngran_eNB_CU ||
node_type == ngran_ng_eNB_CU) {
if (itti_create_task(TASK_CU_F1, F1AP_CU_task, NULL) < 0) {
LOG_E(F1AP, "Create task for F1AP CU failed\n");
AssertFatal(1==0,"exiting");
}
}
if (node_type == ngran_gNB_CUCP) {
if (itti_create_task(TASK_CUCP_E1, E1AP_CUCP_task, NULL) < 0)
AssertFatal(false, "Create task for E1AP CP failed\n");
MessageDef *msg = RCconfig_NR_CU_E1(true);
if (msg)
itti_send_msg_to_task(TASK_CUCP_E1, 0, msg);
else
AssertFatal(false, "Send inti to task for E1AP CP failed\n");
}
if (node_type == ngran_gNB_CUUP) {
AssertFatal(false, "To run CU-UP use executable nr-cuup\n");
}
if (NODE_IS_DU(node_type)) {
if (itti_create_task(TASK_DU_F1, F1AP_DU_task, NULL) < 0) {
LOG_E(F1AP, "Create task for F1AP DU failed\n");
AssertFatal(1==0,"exiting");
}
// configure F1AP here for F1C
LOG_I(GNB_APP,"ngran_gNB_DU: Allocating ITTI message for F1AP_SETUP_REQ\n");
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, F1AP_SETUP_REQ);
RCconfig_NR_DU_F1(msg_p, 0);
itti_send_msg_to_task (TASK_DU_F1, GNB_MODULE_ID_TO_INSTANCE(0), msg_p);
}
}
do {
// Wait for a message
itti_receive_msg (TASK_GNB_APP, &msg_p);
msg_name = ITTI_MSG_NAME (msg_p);
instance = ITTI_MSG_DESTINATION_INSTANCE (msg_p);
switch (ITTI_MSG_ID(msg_p)) {
case TERMINATE_MESSAGE:
LOG_W(GNB_APP, " *** Exiting GNB_APP thread\n");
itti_exit_task ();
break;
case MESSAGE_TEST:
LOG_I(GNB_APP, "Received %s\n", ITTI_MSG_NAME(msg_p));
break;
case NGAP_REGISTER_GNB_CNF:
LOG_I(GNB_APP, "[gNB %ld] Received %s: associated AMF %d\n", instance, msg_name,
NGAP_REGISTER_GNB_CNF(msg_p).nb_amf);
/*
DevAssert(register_gnb_pending > 0);
register_gnb_pending--;
// Check if at least gNB is registered with one AMF
if (NGAP_REGISTER_GNB_CNF(msg_p).nb_amf > 0) {
registered_gnb++;
}
// Check if all register gNB requests have been processed
if (register_gnb_pending == 0) {
if (registered_gnb == gnb_nb) {
// If all gNB are registered, start L2L1 task
MessageDef *msg_init_p;
msg_init_p = itti_alloc_new_message (TASK_GNB_APP, 0, INITIALIZE_MESSAGE);
itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
} else {
uint32_t not_associated = gnb_nb - registered_gnb;
LOG_W(GNB_APP, " %d gNB %s not associated with a AMF, retrying registration in %d seconds ...\n",
not_associated, not_associated > 1 ? "are" : "is", GNB_REGISTER_RETRY_DELAY);
// Restart the gNB registration process in GNB_REGISTER_RETRY_DELAY seconds
if (timer_setup (GNB_REGISTER_RETRY_DELAY, 0, TASK_GNB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
NULL, &gnb_register_retry_timer_id) < 0) {
LOG_E(GNB_APP, " Can not start gNB register retry timer, use \"sleep\" instead!\n");
sleep(GNB_REGISTER_RETRY_DELAY);
// Restart the registration process
registered_gnb = 0;
register_gnb_pending = gNB_app_register (gnb_id_start, gnb_id_end);//, gnb_properties_p);
}
}
}
*/
break;
case F1AP_SETUP_RESP:
AssertFatal(NODE_IS_DU(node_type), "Should not have received F1AP_SETUP_RESP in CU/gNB\n");
LOG_I(GNB_APP, "Received %s: associated ngran_gNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p),
F1AP_SETUP_RESP(msg_p).gNB_CU_name,F1AP_SETUP_RESP(msg_p).num_cells_to_activate);
cell_to_activate = F1AP_SETUP_RESP(msg_p).num_cells_to_activate;
gNB_app_handle_f1ap_setup_resp(&F1AP_SETUP_RESP(msg_p));
break;
case F1AP_GNB_CU_CONFIGURATION_UPDATE:
AssertFatal(NODE_IS_DU(node_type), "Should not have received F1AP_GNB_CU_CONFIGURATION_UPDATE in CU/gNB\n");
LOG_I(GNB_APP, "Received %s: associated ngran_gNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p),
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).gNB_CU_name,F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).num_cells_to_activate);
cell_to_activate += F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).num_cells_to_activate;
gNB_app_handle_f1ap_gnb_cu_configuration_update(&F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p));
/* Check if at least gNB is registered with one AMF */
AssertFatal(cell_to_activate == 1,"No cells to activate or cells > 1 %d\n",cell_to_activate);
break;
case NGAP_DEREGISTERED_GNB_IND:
LOG_W(GNB_APP, "[gNB %ld] Received %s: associated AMF %d\n", instance, msg_name,
NGAP_DEREGISTERED_GNB_IND(msg_p).nb_amf);
/* TODO handle recovering of registration */
break;
case TIMER_HAS_EXPIRED:
LOG_I(GNB_APP, " Received %s: timer_id %ld\n", msg_name, TIMER_HAS_EXPIRED(msg_p).timer_id);
//if (TIMER_HAS_EXPIRED (msg_p).timer_id == gnb_register_retry_timer_id) {
/* Restart the registration process */
// registered_gnb = 0;
// register_gnb_pending = gNB_app_register(gnb_id_start, gnb_id_end);//, gnb_properties_p);
//}
break;
default:
LOG_E(GNB_APP, "Received unexpected message %s\n", msg_name);
break;
}
result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
} while (1);
return NULL;
}