From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: bpf@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH bpf-next v3 6/6] selftests/bpf: Fix test_core_reloc_mods on big-endian machines
Date: Tue, 26 Oct 2021 03:08:31 +0200 [thread overview]
Message-ID: <20211026010831.748682-7-iii@linux.ibm.com> (raw)
In-Reply-To: <20211026010831.748682-1-iii@linux.ibm.com>
This is the same as commit d164dd9a5c08 ("selftests/bpf: Fix
test_core_autosize on big-endian machines"), but for
test_core_reloc_mods.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
tools/testing/selftests/bpf/progs/test_core_reloc_mods.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c b/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
index 8b533db4a7a5..b2ded497572a 100644
--- a/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
+++ b/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
@@ -42,7 +42,16 @@ struct core_reloc_mods {
core_reloc_mods_substruct_t h;
};
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
+#else
+#define CORE_READ(dst, src) ({ \
+ int __sz = sizeof(*(dst)) < sizeof(*(src)) ? sizeof(*(dst)) : \
+ sizeof(*(src)); \
+ bpf_core_read((char *)(dst) + sizeof(*(dst)) - __sz, __sz, \
+ (const char *)(src) + sizeof(*(src)) - __sz); \
+})
+#endif
SEC("raw_tracepoint/sys_enter")
int test_core_mods(void *ctx)
--
2.31.1
next prev parent reply other threads:[~2021-10-26 1:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 1:08 [PATCH bpf-next v3 0/6] core_reloc fixes for s390 Ilya Leoshkevich
2021-10-26 1:08 ` [PATCH bpf-next v3 1/6] libbpf: Fix endianness detection in BPF_CORE_READ_BITFIELD_PROBED() Ilya Leoshkevich
2021-10-26 1:08 ` [PATCH bpf-next v3 2/6] libbpf: Use __BYTE_ORDER__ Ilya Leoshkevich
2021-10-27 19:05 ` Arnaldo Carvalho de Melo
2021-10-26 1:08 ` [PATCH bpf-next v3 3/6] selftests/bpf: " Ilya Leoshkevich
2021-10-26 1:08 ` [PATCH bpf-next v3 4/6] samples: seccomp: use __BYTE_ORDER__ Ilya Leoshkevich
2021-10-26 1:08 ` [PATCH bpf-next v3 5/6] selftests/seccomp: Use __BYTE_ORDER__ Ilya Leoshkevich
2021-10-26 1:08 ` Ilya Leoshkevich [this message]
2021-10-26 3:40 ` [PATCH bpf-next v3 0/6] core_reloc fixes for s390 Andrii Nakryiko
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