vsock/test: Use NSEC_PER_SEC

Replace 1000000000ULL with NSEC_PER_SEC.

No functional change intended.

Reviewed-by: Luigi Leonardi <[email protected]>
Reviewed-by: Stefano Garzarella <[email protected]>
Signed-off-by: Michal Luczaj <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: mmhal

tools/testing/vsock/vsock_test.c

@@ -22,6 +22,7 @@
 #include <signal.h>
 #include <sys/ioctl.h>
 #include <linux/sockios.h>
+#include <linux/time64.h>
 
 #include "vsock_test_zerocopy.h"
 #include "timeout.h"
@@ -559,7 +560,7 @@ static time_t current_nsec(void)
 		exit(EXIT_FAILURE);
 	}
 
-	return (ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
+	return (ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec;
 }
 
 #define RCVTIMEO_TIMEOUT_SEC 1
@@ -599,7 +600,7 @@ static void test_seqpacket_timeout_client(const struct test_opts *opts)
 	}
 
 	read_overhead_ns = current_nsec() - read_enter_ns -
-			1000000000ULL * RCVTIMEO_TIMEOUT_SEC;
+			   NSEC_PER_SEC * RCVTIMEO_TIMEOUT_SEC;
 
 	if (read_overhead_ns > READ_OVERHEAD_NSEC) {
 		fprintf(stderr,