Bluetooth: Host: Use macro for nanoseconds per second

Use the macro NSEC_PER_SEC defined in sys_clock.h for nanoseconds per
second when updating write stats.

Signed-off-by: Alex Apostolu <[email protected]>

Author: alexapostolu

subsys/bluetooth/host/shell/gatt.c

@@ -27,6 +27,7 @@
 #include <zephyr/sys/__assert.h>
 #include <zephyr/sys/byteorder.h>
 #include <zephyr/sys/time_units.h>
+#include <zephyr/sys_clock.h>
 #include <zephyr/sys/util.h>
 #include <sys/types.h>
 
@@ -61,14 +62,14 @@ static void update_write_stats(uint16_t len)
 	/* if last data rx-ed was greater than 1 second in the past,
 	 * reset the metrics.
 	 */
-	if (delta > 1000000000) {
+	if (delta > NSEC_PER_SEC) {
 		write_stats.len = 0U;
 		write_stats.rate = 0U;
 		cycle_stamp = k_cycle_get_32();
 	} else {
 		write_stats.len += len;
 		write_stats.rate = ((uint64_t)write_stats.len << 3) *
-			1000000000U / delta;
+			NSEC_PER_SEC / delta;
 	}
 }
 

subsys/bluetooth/host/shell/l2cap.c

@@ -29,6 +29,7 @@
 #include <zephyr/shell/shell_string_conv.h>
 #include <zephyr/sys/atomic_types.h>
 #include <zephyr/sys/byteorder.h>
+#include <zephyr/sys_clock.h>
 #include <zephyr/kernel.h>
 #include <zephyr/sys/time_units.h>
 #include <zephyr/sys/util.h>
@@ -76,13 +77,13 @@ static int l2cap_recv_metrics(struct bt_l2cap_chan *chan, struct net_buf *buf)
 	/* if last data rx-ed was greater than 1 second in the past,
 	 * reset the metrics.
 	 */
-	if (delta > 1000000000) {
+	if (delta > NSEC_PER_SEC) {
 		len = 0U;
 		l2cap_rate = 0U;
 		cycle_stamp = k_cycle_get_32();
 	} else {
 		len += buf->len;
-		l2cap_rate = ((uint64_t)len << 3) * 1000000000U / delta;
+		l2cap_rate = ((uint64_t)len << 3) * NSEC_PER_SEC / delta;
 	}
 
 	return 0;