linux-kernel - [PATCH] selftests/bpf: remove ARRAY

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Message-Id: <20211210173433.13247-1-skhan@linuxfoundation.org>
Date:   Fri, 10 Dec 2021 10:34:33 -0700
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     shuah@...nel.org, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org
Cc:     Shuah Khan <skhan@...uxfoundation.org>,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] selftests/bpf: remove ARRAY_SIZE defines from tests

ARRAY_SIZE is defined in multiple test files. Remove the definitions
and include header file for the define instead.

Remove ARRAY_SIZE define and add include bpf_util.h to bring in the
define.

Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
---
 tools/testing/selftests/bpf/progs/netif_receive_skb.c | 5 +----
 tools/testing/selftests/bpf/progs/profiler.inc.h      | 5 +----
 tools/testing/selftests/bpf/progs/test_sysctl_loop1.c | 5 +----
 tools/testing/selftests/bpf/progs/test_sysctl_loop2.c | 4 +---
 tools/testing/selftests/bpf/progs/test_sysctl_prog.c  | 5 +----
 5 files changed, 5 insertions(+), 19 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/netif_receive_skb.c b/tools/testing/selftests/bpf/progs/netif_receive_skb.c
index 1d8918dfbd3f..7a5ebd330689 100644
--- a/tools/testing/selftests/bpf/progs/netif_receive_skb.c
+++ b/tools/testing/selftests/bpf/progs/netif_receive_skb.c
@@ -5,6 +5,7 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 #include <bpf/bpf_core_read.h>
+#include <bpf/bpf_util.h>
 
 #include <errno.h>
 
@@ -23,10 +24,6 @@ bool skip = false;
 #define BADPTR			0
 #endif
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(x)	(sizeof(x) / sizeof((x)[0]))
-#endif
-
 struct {
 	__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
 	__uint(max_entries, 1);
diff --git a/tools/testing/selftests/bpf/progs/profiler.inc.h b/tools/testing/selftests/bpf/progs/profiler.inc.h
index 4896fdf816f7..aad30994ecd7 100644
--- a/tools/testing/selftests/bpf/progs/profiler.inc.h
+++ b/tools/testing/selftests/bpf/progs/profiler.inc.h
@@ -4,6 +4,7 @@
 #include <bpf/bpf_core_read.h>
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
+#include <bpf/bpf_util.h>
 
 #include "profiler.h"
 
@@ -132,10 +133,6 @@ struct {
 	__uint(max_entries, 16);
 } disallowed_exec_inodes SEC(".maps");
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
-#endif
-
 static INLINE bool IS_ERR(const void* ptr)
 {
 	return IS_ERR_VALUE((unsigned long)ptr);
diff --git a/tools/testing/selftests/bpf/progs/test_sysctl_loop1.c b/tools/testing/selftests/bpf/progs/test_sysctl_loop1.c
index 553a282d816a..c7c512e0af79 100644
--- a/tools/testing/selftests/bpf/progs/test_sysctl_loop1.c
+++ b/tools/testing/selftests/bpf/progs/test_sysctl_loop1.c
@@ -8,10 +8,7 @@
 #include <linux/bpf.h>
 
 #include <bpf/bpf_helpers.h>
-
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-#endif
+#include <bpf/bpf_util.h>
 
 /* tcp_mem sysctl has only 3 ints, but this test is doing TCP_MEM_LOOPS */
 #define TCP_MEM_LOOPS 28  /* because 30 doesn't fit into 512 bytes of stack */
diff --git a/tools/testing/selftests/bpf/progs/test_sysctl_loop2.c b/tools/testing/selftests/bpf/progs/test_sysctl_loop2.c
index 2b64bc563a12..57cda15d0032 100644
--- a/tools/testing/selftests/bpf/progs/test_sysctl_loop2.c
+++ b/tools/testing/selftests/bpf/progs/test_sysctl_loop2.c
@@ -8,10 +8,8 @@
 #include <linux/bpf.h>
 
 #include <bpf/bpf_helpers.h>
+#include <bpf/bpf_util.h>
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-#endif
 
 /* tcp_mem sysctl has only 3 ints, but this test is doing TCP_MEM_LOOPS */
 #define TCP_MEM_LOOPS 20  /* because 30 doesn't fit into 512 bytes of stack */
diff --git a/tools/testing/selftests/bpf/progs/test_sysctl_prog.c b/tools/testing/selftests/bpf/progs/test_sysctl_prog.c
index 5489823c83fc..6047c39eb457 100644
--- a/tools/testing/selftests/bpf/progs/test_sysctl_prog.c
+++ b/tools/testing/selftests/bpf/progs/test_sysctl_prog.c
@@ -8,6 +8,7 @@
 #include <linux/bpf.h>
 
 #include <bpf/bpf_helpers.h>
+#include <bpf/bpf_util.h>
 
 /* Max supported length of a string with unsigned long in base 10 (pow2 - 1). */
 #define MAX_ULONG_STR_LEN 0xF
@@ -15,10 +16,6 @@
 /* Max supported length of sysctl value string (pow2). */
 #define MAX_VALUE_STR_LEN 0x40
 
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-#endif
-
 const char tcp_mem_name[] = "net/ipv4/tcp_mem";
 static __always_inline int is_tcp_mem(struct bpf_sysctl *ctx)
 {
-- 
2.32.0