Increase internal clock resolution to nsec

[IPROUTE]: Increase internal clock resolution to nsec
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>

tc/tc_core.h

@@ -4,7 +4,7 @@
 #include <asm/types.h>
 #include <linux/pkt_sched.h>
 
-#define TIME_UNITS_PER_SEC	1000000
+#define TIME_UNITS_PER_SEC	1000000000
 
 int  tc_core_time2big(long time);
 long tc_core_time2tick(long time);

tc/tc_util.c

@@ -228,6 +228,9 @@ int get_time(unsigned *time, const char *str)
 		else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 ||
 			 strcasecmp(p, "usecs") == 0)
 			t *= TIME_UNITS_PER_SEC/1000000;
+		else if (strcasecmp(p, "ns") == 0 || strcasecmp(p, "nsec")==0 ||
+			 strcasecmp(p, "nsecs") == 0)
+			t *= TIME_UNITS_PER_SEC/1000000000;
 		else
 			return -1;
 	}
@@ -245,8 +248,10 @@ void print_time(char *buf, int len, __u32 time)
 		snprintf(buf, len, "%.1fs", tmp/TIME_UNITS_PER_SEC);
 	else if (tmp >= TIME_UNITS_PER_SEC/1000)
 		snprintf(buf, len, "%.1fms", tmp/(TIME_UNITS_PER_SEC/1000));
+	else if (tmp >= TIME_UNITS_PER_SEC/1000000)
+		snprintf(buf, len, "%.1fus", tmp/(TIME_UNITS_PER_SEC/1000000));
 	else
-		snprintf(buf, len, "%uus", time);
+		snprintf(buf, len, "%uns", time);
 }
 
 char * sprint_time(__u32 time, char *buf)