selftests/net: remove ARRAY_SIZE define from individual tests

ARRAY_SIZE is defined in several selftests. Remove definitions from
individual test files and include header file for the define instead.
ARRAY_SIZE define is added in a separate patch to prepare for this
change.

Remove ARRAY_SIZE from net tests and pickup the one defined in
kselftest.h.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/net/gro.c

@@ -57,10 +57,11 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "../kselftest.h"
+
 #define DPORT 8000
 #define SPORT 1500
 #define PAYLOAD_LEN 100
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 #define NUM_PACKETS 4
 #define START_SEQ 100
 #define START_ACK 100

tools/testing/selftests/net/ipsec.c

@@ -41,7 +41,6 @@
 
 #define pr_err(fmt, ...)	printk(fmt ": %m", ##__VA_ARGS__)
 
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
 #define IPV4_STR_SZ	16	/* xxx.xxx.xxx.xxx is longest + \0 */

tools/testing/selftests/net/reuseport_bpf.c

@@ -24,9 +24,7 @@
 #include <sys/resource.h>
 #include <unistd.h>
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-#endif
+#include "../kselftest.h"
 
 struct test_params {
 	int recv_family;

tools/testing/selftests/net/rxtimestamp.c

@@ -18,7 +18,7 @@
 #include <linux/net_tstamp.h>
 #include <linux/errqueue.h>
 
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#include "../kselftest.h"
 
 struct options {
 	int so_timestamp;

tools/testing/selftests/net/socket.c

@@ -7,6 +7,8 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 
+#include "../kselftest.h"
+
 struct socket_testcase {
 	int	domain;
 	int	type;
@@ -31,7 +33,6 @@ static struct socket_testcase tests[] = {
 	{ AF_INET, SOCK_STREAM, IPPROTO_UDP, -EPROTONOSUPPORT, 1  },
 };
 
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 #define ERR_STRING_SZ	64
 
 static int run_tests(void)

tools/testing/selftests/net/tcp_fastopen_backup_key.c

@@ -26,6 +26,8 @@
 #include <fcntl.h>
 #include <time.h>
 
+#include "../kselftest.h"
+
 #ifndef TCP_FASTOPEN_KEY
 #define TCP_FASTOPEN_KEY 33
 #endif
@@ -34,10 +36,6 @@
 #define PROC_FASTOPEN_KEY "/proc/sys/net/ipv4/tcp_fastopen_key"
 #define KEY_LENGTH 16
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-#endif
-
 static bool do_ipv6;
 static bool do_sockopt;
 static bool do_rotate;