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Add GTPU tunnel data request at PDCP to deliver Uplink traffic over S1-U

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This commit is contained in:
matzakos
2020-08-05 18:42:47 +02:00
parent e6f20804b9
commit 431ed8bd73
1 changed files with 41 additions and 4 deletions
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openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.c
+41 -4
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@@ -394,11 +394,48 @@ static void deliver_sdu_drb(void *_ue, nr_pdcp_entity_t *entity,
{
extern int nas_sock_fd[];
int len;
nr_pdcp_ue_t *ue = _ue;
MessageDef *message_p;
uint8_t *gtpu_buffer_p;
int rb_id;
int i;
if(IS_SOFTMODEM_NOS1){
len = write(nas_sock_fd[0], buf, size);
if (len != size) {
LOG_E(PDCP, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
}
else{
for (i = 0; i < 5; i++) {
if (entity == ue->drb[i]) {
rb_id = i+1;
goto rb_found;
}
}
LOG_E(PDCP, "%s:%d:%s: fatal, no RB found for ue %d\n",
__FILE__, __LINE__, __FUNCTION__, ue->rnti);
exit(1);
rb_found:
gtpu_buffer_p = itti_malloc(TASK_PDCP_ENB, TASK_GTPV1_U,
size + GTPU_HEADER_OVERHEAD_MAX);
AssertFatal(gtpu_buffer_p != NULL, "OUT OF MEMORY");
memcpy(&gtpu_buffer_p[GTPU_HEADER_OVERHEAD_MAX], buf, size);
message_p = itti_alloc_new_message(TASK_PDCP_ENB, GTPV1U_ENB_TUNNEL_DATA_REQ);
AssertFatal(message_p != NULL, "OUT OF MEMORY");
GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).buffer = gtpu_buffer_p;
GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).length = size;
GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).offset = GTPU_HEADER_OVERHEAD_MAX;
GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rnti = ue->rnti;
GTPV1U_ENB_TUNNEL_DATA_REQ(message_p).rab_id = rb_id + 4;
printf("!!!!!!! deliver_sdu_drb (drb %d) sending message to gtp size %d: ", rb_id, size);
//for (i = 0; i < size; i++) printf(" %2.2x", (unsigned char)buf[i]);
printf("\n");
itti_send_msg_to_task(TASK_GTPV1_U, INSTANCE_DEFAULT, message_p);
len = write(nas_sock_fd[0], buf, size);
if (len != size) {
LOG_E(PDCP, "%s:%d:%s: fatal\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
}