[PATCH] selftests/net: use ARRAY_SIZE macro in skf_net_off.c

[longlong yan]

The ARRAY_SIZE macro is more compact and more formal in linux source.

Fixes: fcd7132cb1f9 ("selftests/net: test sk_filter support for SKF_NET_OFF on 
frags")
Signed-off-by: longlong yan <yanlongl...@kylinos.cn>
---
 tools/testing/selftests/net/skf_net_off.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/skf_net_off.c 
b/tools/testing/selftests/net/skf_net_off.c
index 1fdf61d6cd7f..d4e38d326c39 100644
--- a/tools/testing/selftests/net/skf_net_off.c
+++ b/tools/testing/selftests/net/skf_net_off.c
@@ -46,6 +46,7 @@
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <unistd.h>
+#include "kselftest.h"
 
 static bool cfg_do_filter;
 static bool cfg_do_frags;
@@ -92,7 +93,7 @@ static void sk_set_filter(int fd)
        };
 
        struct sock_fprog filter = {
-               sizeof(filter_code) / sizeof(filter_code[0]),
+               ARRAY_SIZE(filter_code),
                filter_code,
        };
 
@@ -159,7 +160,7 @@ static void tun_write(int fd)
        iov[4].iov_base = &payload;
        iov[4].iov_len  = sizeof(payload);
 
-       ret = writev(fd, iov, sizeof(iov) / sizeof(iov[0]));
+       ret = writev(fd, iov, ARRAY_SIZE(iov));
        if (ret <= 0)
                error(1, errno, "writev");
 }
@@ -183,7 +184,7 @@ static void raw_read(int fd)
        iov[1].iov_len = sizeof(payload);
 
        msg.msg_iov = iov;
-       msg.msg_iovlen = sizeof(iov) / sizeof(iov[0]);
+       msg.msg_iovlen = ARRAY_SIZE(iov);
 
        ret = recvmsg(fd, &msg, 0);
        if (ret <= 0)
-- 
2.43.0