userspace/snmpd: add new wrsSpllVersionGroup

Add following spll version info:
--wrsSpllVersion
--wrsSpllBuildDate

Additionally:
--update Makefile
--update MIB
--update init.c
--increase version number of spll_stat structure due to new fields
--support version 2 of spll_stat structure in wrsSpllStatusGroup

Please note that this commit requires changes done in wrpc-sw commit:
revision: report build information via spll_stats structure

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/snmpd/Makefile

@@ -39,6 +39,7 @@ SOURCES = \
 	wrsBootStatusGroup.c \
 	wrsTemperatureGroup.c \
 	wrsStartCntGroup.c \
+	wrsSpllVersionGroup.c \
 	wrsSpllStatusGroup.c \
 	wrsPstatsTable.c \
 	wrsPtpDataTable.c \

userspace/snmpd/WR-SWITCH-MIB.txt

@@ -723,6 +723,26 @@ wrsStartCntSyslogd OBJECT-TYPE
     ::= { wrsStartCntGroup 7 }
 
 wrsSpllState            OBJECT IDENTIFIER ::= { wrsExpertStatus 3 }
+
+-- wrsSpllVersionGroup (.7.3.1)
+wrsSpllVersionGroup      OBJECT IDENTIFIER ::= { wrsSpllState 1 }
+
+wrsSpllVersion            OBJECT-TYPE
+    SYNTAX                DisplayString (SIZE (0..32))
+    MAX-ACCESS            read-only
+    STATUS                current
+    DESCRIPTION
+        "The spll version, as returned from 'git describe' at build time"
+    ::= { wrsSpllVersionGroup 1 }
+
+wrsSpllBuildDate          OBJECT-TYPE
+    SYNTAX                DisplayString (SIZE (0..32))
+    MAX-ACCESS            read-only
+    STATUS                current
+    DESCRIPTION
+        "The build date of the spll, '__DATE__' at build time"
+    ::= { wrsSpllVersionGroup 2 }
+
 -- wrsSpllStatusGroup (.7.3.2)
 wrsSpllStatusGroup      OBJECT IDENTIFIER ::= { wrsSpllState 2 }
 

userspace/snmpd/init.c

@@ -18,6 +18,7 @@
 #include "wrsBootStatusGroup.h"
 #include "wrsTemperatureGroup.h"
 #include "wrsStartCntGroup.h"
+#include "wrsSpllVersionGroup.h"
 #include "wrsSpllStatusGroup.h"
 #include "wrsPstatsTable.h"
 #include "wrsPtpDataTable.h"
@@ -46,6 +47,7 @@ void init_wrsSnmp(void)
 	init_wrsBootStatusGroup();
 	init_wrsTemperatureGroup();
 	init_wrsStartCntGroup();
+	init_wrsSpllVersionGroup();
 	init_wrsSpllStatusGroup();
 	init_wrsPstatsTable();
 	init_wrsPtpDataTable();

userspace/snmpd/softpll_ng.h

@@ -129,7 +129,10 @@ int spll_get_dac(int out_channel);
 
 void check_vco_frequencies();
 
+#define SPLL_STATS_VER 2
+
 /* info reported through .stat section */
+/* due to endiannes problem strings has to be 4 bytes alligned */
 struct spll_stats {
 	int magic;	/* 0x5b1157a7 = SPLLSTAT ?;)*/
 	int ver;	/* version of the structure */
@@ -142,6 +145,10 @@ struct spll_stats {
 	int M_lock;
 	int H_y, M_y;
 	int del_cnt;
+	int start_cnt;
+	char commit_id[32];
+	char build_date[16];
+	char build_time[16];
 };
 
 /* This only exists in wr-switch, but we should use it always */

userspace/snmpd/wrsSpllStatusGroup.c

@@ -51,8 +51,8 @@ time_t wrsSpllStatus_data_fill(void)
 			 "wrsSpllStatusGroup Wrong SPLL magic number\n");
 		return time_update;
 	}
-	/* check version of SPLL's stat structure */
-	if (spll_stats_p->ver == 1) {
+	/* check version of SPLL's stat structure, versions 1 and 2 are ok */
+	if ((spll_stats_p->ver == 1) || (spll_stats_p->ver == 2)) {
 		wrsSpllStatus_s.wrsSpllMode = spll_stats_p->mode;
 		wrsSpllStatus_s.wrsSpllIrqCnt = spll_stats_p->irq_cnt;
 		wrsSpllStatus_s.wrsSpllSeqState = spll_stats_p->seq_state;

userspace/snmpd/wrsSpllVersionGroup.c

+#include "wrsSnmp.h"
+#include "wrsSpllVersionGroup.h"
+#include "softpll_ng.h"
+#include "snmp_mmap.h"
+
+#define FPGA_SPLL_STAT 0x10006800
+#define SPLL_MAGIC 0x5b1157a7
+
+static struct spll_stats *spll_stats_p;
+
+static struct pickinfo wrsSpllVersion_pickinfo[] = {
+	FIELD(wrsSpllVersion_s, ASN_OCTET_STR, commit_id),
+	FIELD(wrsSpllVersion_s, ASN_OCTET_STR, build_date),
+};
+
+struct wrsSpllVersion_s wrsSpllVersion_s;
+
+/* change endianess of the string */
+static void strncpy_e(char *d, char *s, int len)
+{
+	int i;
+	int len_4;
+	uint32_t *s_i, *d_i;
+
+	s_i = (uint32_t *)s;
+	d_i = (uint32_t *)d;
+	len_4 = (len+3)/4; /* ceil len to word lenth (4) */
+	for (i = 0; i < len_4; i++)
+		d_i[i] = ntohl(s_i[i]);
+}
+
+time_t wrsSpllVersion_data_fill(void)
+{
+	static time_t time_update;
+	time_t time_cur;
+
+	time_cur = time(NULL);
+	if (time_update
+	    && time_cur - time_update < WRSSPLLVERSION_CACHE_TIMEOUT) {
+		/* cache not updated, return last update time */
+		return time_update;
+	}
+	time_update = time_cur;
+
+	memset(&wrsSpllVersion_s, 0, sizeof(wrsSpllVersion_s));
+
+	if (!spll_stats_p) /* first time, map the fpga space */
+		spll_stats_p = create_map(FPGA_SPLL_STAT,
+					  sizeof(*spll_stats_p));
+	if (!spll_stats_p) {
+		/* unable to mmap */
+		return time_update;
+	}
+	/* check magic number in SPLL stat memory */
+	if (spll_stats_p->magic != SPLL_MAGIC) {
+		/* wrong magic */
+		snmp_log(LOG_ERR,
+			 "wrsSpllVersionGroup Wrong SPLL magic number\n");
+		return time_update;
+	}
+	/* check version of SPLL's stat structure, version fields are from
+	 * version 2 */
+	if (spll_stats_p->ver == 2) {
+		int len;
+		strncpy_e(wrsSpllVersion_s.commit_id, spll_stats_p->commit_id, 32);
+		/* concatenate date and time */
+		strncpy_e(wrsSpllVersion_s.build_date, spll_stats_p->build_date, 16);
+		len = strnlen(wrsSpllVersion_s.build_date, 32);
+		wrsSpllVersion_s.build_date[len] = ' '; /* put space instead of null */
+		/* add time after added space at the end of string */
+		strncpy_e(&wrsSpllVersion_s.build_date[len + 1], spll_stats_p->build_time, 16 - 1);
+	}
+	/* there was an update, return current time */
+	return time_update;
+}
+
+#define GT_OID WRSSPLLVERSION_OID
+#define GT_PICKINFO wrsSpllVersion_pickinfo
+#define GT_DATA_FILL_FUNC wrsSpllVersion_data_fill
+#define GT_DATA_STRUCT wrsSpllVersion_s
+#define GT_GROUP_NAME "wrsSpllVersionGroup"
+#define GT_INIT_FUNC init_wrsSpllVersionGroup
+
+#include "wrsGroupTemplate.h"

userspace/snmpd/wrsSpllVersionGroup.h

+#ifndef WRS_SPLL_VERSION_GROUP_H
+#define WRS_SPLL_VERSION_GROUP_H
+
+#define WRSSPLLVERSION_CACHE_TIMEOUT 5
+#define WRSSPLLVERSION_OID WRS_OID, 7, 3, 1
+
+struct wrsSpllVersion_s {
+	char commit_id[32];
+	char build_date[32];
+};
+
+extern struct wrsSpllVersion_s wrsSpllVersion_s;
+time_t wrsSpllVersion_data_fill(void);
+
+void init_wrsSpllVersionGroup(void);
+#endif /* WRS_SPLL_VERSION_GROUP_H */