sysmobts: Add beginnings of an OML router and create Failure Messages in the sysmobts-manager

Make the sysmobts listen for OML messages on a Unix Domain Socket.
Messages passing a sanity check will be forwarded to the BSC.

In case the sysmobts-mgr detects a temperature above or below
temperature threshold an OML failure message will be sent
to the BTS.

[moved confinfo into the #ifdef BUILD_SBTS2050]

Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>

4 files changed, 268 insertions, 1 deletions

diff --git a/src/osmo-bts-sysmo/misc/sysmobts_mgr.c b/src/osmo-bts-sysmo/misc/sysmobts_mgr.c
index 6c64d0f2..85ebd80d 100644
--- a/src/osmo-bts-sysmo/misc/sysmobts_mgr.c
+++ b/src/osmo-bts-sysmo/misc/sysmobts_mgr.c
@@ -36,6 +36,7 @@
 #include <osmocom/core/timer.h>
 #include <osmocom/core/msgb.h>
 #include <osmocom/core/serial.h>
+#include <osmocom/core/socket.h>
 #include <osmocom/vty/telnet_interface.h>
 #include <osmocom/vty/logging.h>
 
@@ -55,8 +56,67 @@ void *tall_mgr_ctx;
 /* every 1 hours means 365*24 = 8760 EEprom writes per year (max) */
 #define HOURS_TIMER_SECS	(1 * 3600)
 
+/* every 5 minutes try to reconnect if we have a problem in the communication*/
+#define CONNECT_TIMER_SECS	300
+
 #ifdef BUILD_SBTS2050
+static int fd_unix = -1;
+static int trx_nr = -1;
+static int state_connection;
+static struct sbts2050_config_info confinfo;
+
 static struct osmo_timer_list temp_uc_timer;
+static struct osmo_timer_list connect_timer;
+static void socket_connect_cb(void *data)
+{
+	fd_unix = osmo_sock_unix_init(SOCK_SEQPACKET, 0, SOCKET_PATH,
+				      OSMO_SOCK_F_CONNECT);
+	if (fd_unix < 0) {
+		osmo_timer_schedule(&connect_timer, CONNECT_TIMER_SECS, 0);
+		return;
+	}
+
+	osmo_timer_del(&connect_timer);
+	state_connection = SYSMO_MGR_CONNECTED;
+}
+
+static int check_temperature(struct uc *ucontrol0, int lowlimit, int highlimit,
+			      int current_temp,
+			      enum sbts2050_temp_sensor sensor,
+			      enum sbts2050_alert_lvl alert)
+{
+	int rc;
+
+	if (lowlimit >= current_temp || highlimit <= current_temp) {
+		switch (alert) {
+		case SBTS2050_WARN_ALERT:
+			rc = send_omlfailure(fd_unix, alert, sensor, &confinfo,
+					     trx_nr);
+			break;
+		case SBTS2050_SEVERE_ALERT:
+			rc = send_omlfailure(fd_unix, alert, sensor,
+					     &confinfo, trx_nr);
+			sbts2050_uc_power(ucontrol0, confinfo.master_power_act,
+					  confinfo.slave_power_act,
+					  confinfo.pa_power_act);
+			break;
+		default:
+			LOGP(DFIND, LOGL_ERROR, "Unknown alert type %d\n",
+			     alert);
+			return -1;
+		}
+	} else {
+		return 0;
+	}
+
+	state_connection = rc;
+
+	if (state_connection == SYSMO_MGR_DISCONNECTED)
+		socket_connect_cb(NULL);
+
+	return 1;
+}
+
 static void check_uctemp_timer_cb(void *data)
 {
 	int temp_pa = 0, temp_board = 0;
@@ -64,6 +124,33 @@ static void check_uctemp_timer_cb(void *data)
 
 	sbts2050_uc_check_temp(ucontrol0, &temp_pa, &temp_board);
 
+	confinfo.temp_pa_cur = temp_pa;
+	confinfo.temp_board_cur = temp_board;
+
+	check_temperature(ucontrol0,
+			  confinfo.temp_min_pa_warn_limit,
+			  confinfo.temp_max_pa_warn_limit,
+			  temp_pa, SBTS2050_TEMP_PA,
+			  SBTS2050_WARN_ALERT);
+
+	check_temperature(ucontrol0,
+			  confinfo.temp_min_pa_severe_limit,
+			  confinfo.temp_max_pa_severe_limit,
+			  temp_pa, SBTS2050_TEMP_PA,
+			  SBTS2050_SEVERE_ALERT);
+
+	check_temperature(ucontrol0,
+			  confinfo.temp_min_board_warn_limit,
+			  confinfo.temp_max_board_warn_limit,
+			  temp_board, SBTS2050_TEMP_BOARD,
+			  SBTS2050_WARN_ALERT);
+
+	check_temperature(ucontrol0,
+			  confinfo.temp_min_board_severe_limit,
+			  confinfo.temp_max_board_severe_limit,
+			  temp_board, SBTS2050_TEMP_BOARD,
+			  SBTS2050_SEVERE_ALERT);
+
 	osmo_timer_schedule(&temp_uc_timer, TEMP_TIMER_SECS, 0);
 }
 #endif
@@ -93,6 +180,7 @@ static void initialize_sbts2050(void)
 		if (val != 0)
 			return;
 	}
+	trx_nr = val;
 
 	ucontrol0.fd = osmo_serial_init(ucontrol0.path, 115200);
 	if (ucontrol0.fd < 0) {
@@ -101,6 +189,10 @@ static void initialize_sbts2050(void)
 		return;
 	}
 
+	/* start handle for reconnect the socket in case of error */
+	connect_timer.cb = socket_connect_cb;
+	socket_connect_cb(NULL);
+
 	temp_uc_timer.cb = check_uctemp_timer_cb;
 	temp_uc_timer.data = &ucontrol0;
 	check_uctemp_timer_cb(&ucontrol0);
diff --git a/src/osmo-bts-sysmo/misc/sysmobts_mgr.h b/src/osmo-bts-sysmo/misc/sysmobts_mgr.h
index ddb6774a..21f30a42 100644
--- a/src/osmo-bts-sysmo/misc/sysmobts_mgr.h
+++ b/src/osmo-bts-sysmo/misc/sysmobts_mgr.h
@@ -7,4 +7,11 @@ enum {
 	DFIND,
 };
 
+enum {
+	SYSMO_MGR_DISCONNECTED = 0,
+	SYSMO_MGR_CONNECTED,
+};
+
+#define SOCKET_PATH		"/var/run/bts_oml"
+
 #endif
diff --git a/src/osmo-bts-sysmo/misc/sysmobts_misc.c b/src/osmo-bts-sysmo/misc/sysmobts_misc.c
index 9ea26c29..2417c3d9 100644
--- a/src/osmo-bts-sysmo/misc/sysmobts_misc.c
+++ b/src/osmo-bts-sysmo/misc/sysmobts_misc.c
@@ -29,14 +29,19 @@
 #include <sys/signal.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <arpa/inet.h>
 
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/utils.h>
 #include <osmocom/core/msgb.h>
+#include <osmocom/core/socket.h>
 #include <osmocom/core/application.h>
 #include <osmocom/vty/telnet_interface.h>
 #include <osmocom/vty/logging.h>
+#include <osmocom/gsm/abis_nm.h>
+#include <osmocom/gsm/protocol/ipaccess.h>
 
+#include "utils.h"
 #include "btsconfig.h"
 #include "sysmobts_misc.h"
 #include "sysmobts_par.h"
@@ -49,9 +54,140 @@
 #define SERIAL_ALLOC_SIZE	300
 #define SIZE_HEADER_RSP		5
 #define SIZE_HEADER_CMD		4
-
+#define OM_ALLOC_SIZE		1024
+#define OM_HEADROOM_SIZE	128
 
 #ifdef BUILD_SBTS2050
+static void add_sw_descr(struct msgb *msg)
+{
+	char file_version[255];
+	char file_id[255];
+
+	strncpy(file_id, "sysmomgr", strlen("sysmomgr"));
+	file_id[sizeof(file_id) - 1] = '\0';
+	strncpy(file_version, PACKAGE_VERSION, strlen(PACKAGE_VERSION));
+	file_version[sizeof(file_version) - 1] = '\0';
+	msgb_v_put(msg, NM_ATT_SW_DESCR);
+	msgb_tl16v_put(msg, NM_ATT_FILE_ID, strlen(file_id),
+		       (uint8_t *)file_id);
+	msgb_tl16v_put(msg, NM_ATT_FILE_VERSION, strlen(file_version),
+		       (uint8_t *)file_version);
+}
+
+static void add_probable_cause(struct msgb *msg)
+{
+	msgb_tv_put(msg, NM_ATT_PROB_CAUSE, NM_PCAUSE_T_MANUF);
+	msgb_v_put(msg, 0);
+	msgb_v_put(msg, 0);
+}
+
+static void add_oml_hdr_msg(struct msgb *msg, uint8_t msg_type,
+			    uint8_t obj_class, uint8_t bts_nr,
+			    uint8_t trx_nr, uint8_t ts_nr, int is_manuf)
+{
+	struct abis_om_fom_hdr *foh;
+	struct abis_om_hdr *omh;
+
+	msg->l3h = msgb_push(msg, sizeof(*foh));
+	foh = (struct abis_om_fom_hdr *) msg->l3h;
+
+	foh->msg_type = msg_type;
+	foh->obj_class = obj_class;
+	foh->obj_inst.bts_nr = bts_nr;
+	foh->obj_inst.trx_nr = trx_nr;
+	foh->obj_inst.ts_nr = ts_nr;
+
+	if (is_manuf)
+		add_manufacturer_id_label(msg, OSMOCOM_MANUF_ID);
+
+	msg->l2h = msgb_push(msg, sizeof(*omh));
+	omh = (struct abis_om_hdr *) msg->l2h;
+
+	if (is_manuf)
+		omh->mdisc = ABIS_OM_MDISC_MANUF;
+	else
+		omh->mdisc = ABIS_OM_MDISC_FOM;
+	omh->placement = ABIS_OM_PLACEMENT_ONLY;
+	omh->sequence = 0;
+	omh->length = msgb_l3len(msg);
+}
+
+int send_omlfailure(int fd_unix, enum sbts2050_alert_lvl alert,
+		   enum sbts2050_temp_sensor sensor,
+		   struct sbts2050_config_info *add_info, int trx_nr)
+{
+	int rc;
+	struct msgb *msg;
+	const char *buf, *nsensor;
+
+	msg = msgb_alloc_headroom(OM_ALLOC_SIZE, OM_HEADROOM_SIZE, "OML");
+	if (msg == NULL) {
+		LOGP(DTEMP, LOGL_ERROR, "Failed to allocate oml msgb\n");
+		return -1;
+	}
+
+	add_oml_hdr_msg(msg, NM_MT_FAILURE_EVENT_REP, 0, 0, trx_nr, 255, 0);
+
+	msgb_tv_put(msg, NM_ATT_EVENT_TYPE, NM_EVT_ENV_FAIL);
+
+	switch (alert) {
+	case SBTS2050_WARN_ALERT:
+		msgb_tv_put(msg, NM_ATT_SEVERITY, NM_SEVER_WARNING);
+		break;
+	case SBTS2050_SEVERE_ALERT:
+		msgb_tv_put(msg, NM_ATT_SEVERITY, NM_SEVER_CRITICAL);
+		break;
+	default:
+		LOGP(DTEMP, LOGL_ERROR, "Unknown attr severity type %d\n",
+		     alert);
+		goto err;
+	}
+
+	add_probable_cause(msg);
+
+	add_sw_descr(msg);
+
+	switch (sensor) {
+	case SBTS2050_TEMP_BOARD:
+		buf = "Unusual temperature on the Board";
+		nsensor = "Board";
+		break;
+	case SBTS2050_TEMP_PA:
+		buf = "Unusual temperature on the PA";
+		nsensor = "PA";
+		break;
+	default:
+		LOGP(DTEMP, LOGL_ERROR, "Unknown sensor type %d\n", sensor);
+		goto err;
+	}
+	strncpy(add_info->name_sensor, nsensor, sizeof(add_info->name_sensor));
+	add_info->name_sensor[sizeof(add_info->name_sensor) - 1] = '\0';
+
+	msgb_tl16v_put(msg, NM_ATT_ADD_TEXT, strlen(buf), (const uint8_t *)buf);
+
+	msgb_tl16v_put(msg, NM_ATT_ADD_INFO,
+		       sizeof(struct sbts2050_config_info),
+		       (const uint8_t *)add_info);
+
+	prepend_oml_ipa_header(msg);
+
+	rc = send(fd_unix, msg->data, msg->len, 0);
+	if (rc < 0 || rc != msg->len) {
+		LOGP(DTEMP, LOGL_ERROR,
+		     "send error %s during send the Failure Event Report msg\n",
+		     strerror(errno));
+		close(fd_unix);
+		msgb_free(msg);
+		return SYSMO_MGR_DISCONNECTED;
+	}
+
+	msgb_free(msg);
+	return SYSMO_MGR_CONNECTED;
+err:
+	msgb_free(msg);
+	return -1;
+}
+
 /**********************************************************************
  *	Functions read/write from serial interface
  *********************************************************************/
diff --git a/src/osmo-bts-sysmo/misc/sysmobts_misc.h b/src/osmo-bts-sysmo/misc/sysmobts_misc.h
index 01878f24..c22a54b2 100644
--- a/src/osmo-bts-sysmo/misc/sysmobts_misc.h
+++ b/src/osmo-bts-sysmo/misc/sysmobts_misc.h
@@ -32,6 +32,34 @@ struct ucinfo {
 	int pa;
 };
 
+enum sbts2050_alert_lvl {
+	SBTS2050_WARN_ALERT,
+	SBTS2050_SEVERE_ALERT
+};
+
+enum sbts2050_temp_sensor {
+	SBTS2050_TEMP_BOARD,
+	SBTS2050_TEMP_PA
+};
+
+struct sbts2050_config_info {
+	char name_sensor[8];
+	int temp_max_pa_warn_limit;
+	int temp_min_pa_warn_limit;
+	int temp_max_pa_severe_limit;
+	int temp_min_pa_severe_limit;
+	int temp_max_board_warn_limit;
+	int temp_min_board_warn_limit;
+	int temp_max_board_severe_limit;
+	int temp_min_board_severe_limit;
+	int reduce_max_power;
+	int slave_power_act;
+	int master_power_act;
+	int pa_power_act;
+	int temp_pa_cur;
+	int temp_board_cur;
+};
+
 int sysmobts_temp_get(enum sysmobts_temp_sensor sensor,
 		      enum sysmobts_temp_type type);
 
@@ -43,6 +71,10 @@ void sbts2050_uc_power(struct uc *ucontrol, int pmaster, int pslave, int ppa);
 
 int sbts2050_uc_status(struct uc *ucontrol, enum sbts2050_status_rqt status);
 
+int send_omlfailure(int fd_unix, enum sbts2050_alert_lvl alert,
+		   enum sbts2050_temp_sensor sensor,
+		   struct sbts2050_config_info *add_info, int trx_nr);
+
 int sysmobts_update_hours(int no_epprom_write);
 
 enum sysmobts_firmware_type {