Support receiving SI13 from BTS
* store SI13 in BTS struct
* check and handle BCCH SAPI
Change-Id: I610a93ce23725b182ec14e3507331295bd542f74
Related: OS#2400
diff --git a/src/bts.h b/src/bts.h
index b1fb8cc..d65cd2f 100644
--- a/src/bts.h
+++ b/src/bts.h
@@ -29,6 +29,7 @@
#include <osmocom/core/timer.h>
#include <osmocom/core/gsmtap.h>
#include <osmocom/gsm/l1sap.h>
+#include <osmocom/gsm/protocol/gsm_04_08.h>
}
#include "poll_controller.h"
@@ -212,7 +213,8 @@
uint8_t alpha, gamma;
uint8_t egprs_enabled;
uint32_t dl_tbf_idle_msec; /* hold time for idle DL TBFs */
-
+ uint8_t si13[GSM_MACBLOCK_LEN];
+ bool si13_is_set;
/* 0 to support resegmentation in DL, 1 for no reseg */
uint8_t dl_arq_type;
diff --git a/src/osmo-bts-litecell15/lc15_l1_if.c b/src/osmo-bts-litecell15/lc15_l1_if.c
index c82ddba..37b7f78 100644
--- a/src/osmo-bts-litecell15/lc15_l1_if.c
+++ b/src/osmo-bts-litecell15/lc15_l1_if.c
@@ -29,6 +29,8 @@
#include <osmocom/core/gsmtap.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/timer.h>
+#include <osmocom/gsm/protocol/gsm_04_08.h>
+
#include <lc15_l1_if.h>
#include <gprs_debug.h>
#include <pcu_l1_if.h>
diff --git a/src/osmo-bts-sysmo/sysmo_l1_if.c b/src/osmo-bts-sysmo/sysmo_l1_if.c
index 9170972..1c5ecc9 100644
--- a/src/osmo-bts-sysmo/sysmo_l1_if.c
+++ b/src/osmo-bts-sysmo/sysmo_l1_if.c
@@ -10,6 +10,8 @@
#include <osmocom/core/gsmtap.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/timer.h>
+#include <osmocom/gsm/protocol/gsm_04_08.h>
+
#include <sysmo_l1_if.h>
#include <gprs_debug.h>
#include <pcu_l1_if.h>
diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp
index 97eee9b..7112b04 100644
--- a/src/pcu_l1_if.cpp
+++ b/src/pcu_l1_if.cpp
@@ -245,6 +245,27 @@
return pdch->rcv_block(data, len, fn, meas);
}
+static int pcu_rx_data_ind_bcch(uint8_t *data, uint8_t len)
+{
+ struct gprs_rlcmac_bts *bts = bts_main_data();
+
+ if (len == 0) {
+ bts->si13_is_set = false;
+ LOGP(DL1IF, LOGL_INFO, "Received PCU data indication with empty SI13: cache cleaned\n");
+ return 0;
+ }
+
+ if (len != GSM_MACBLOCK_LEN) {
+ LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with SI13 with unexpected length %u\n", len);
+ return -EINVAL;
+ }
+
+ memcpy(bts->si13, data, GSM_MACBLOCK_LEN);
+ bts->si13_is_set = true;
+
+ return 0;
+}
+
static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
{
struct gprs_rlcmac_bts *bts = bts_main_data();
@@ -271,6 +292,9 @@
data_ind->data, data_ind->len, data_ind->fn,
&meas);
break;
+ case PCU_IF_SAPI_BCCH:
+ rc = pcu_rx_data_ind_bcch(data_ind->data, data_ind->len);
+ break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with "
"unsupported sapi %d\n", data_ind->sapi);
diff --git a/src/pcu_main.cpp b/src/pcu_main.cpp
index e909b75..b7574f9 100644
--- a/src/pcu_main.cpp
+++ b/src/pcu_main.cpp
@@ -183,6 +183,7 @@
bts->n3103 = 4;
bts->n3105 = 8;
bts->alpha = 0; /* a = 0.0 */
+ bts->si13_is_set = false;
bts->ms_idle_sec = 60; /* slightly above T3314 (default 44s, 24.008, 11.2.2) */
bts->cs_adj_enabled = 1;
bts->cs_adj_upper_limit = 33; /* Decrease CS if the error rate is above */
diff --git a/src/pcu_vty.h b/src/pcu_vty.h
index c00b882..a075350 100644
--- a/src/pcu_vty.h
+++ b/src/pcu_vty.h
@@ -1,6 +1,7 @@
#ifndef _PCU_VTY_H
#define _PCU_VTY_H
+#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/vty/command.h>
#include <osmocom/vty/vty.h>