From: Andrii Nakryiko <andriin@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
<daniel@iogearbox.net>
Cc: <andrii.nakryiko@gmail.com>, <kernel-team@fb.com>,
Andrii Nakryiko <andriin@fb.com>, Hao Luo <haoluo@google.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Song Liu <songliubraving@fb.com>,
Quentin Monnet <quentin@isovalent.com>
Subject: [PATCH bpf-next 7/9] libbpf: wrap source argument of BPF_CORE_READ macro in parentheses
Date: Wed, 17 Jun 2020 09:18:30 -0700 [thread overview]
Message-ID: <20200617161832.1438371-8-andriin@fb.com> (raw)
In-Reply-To: <20200617161832.1438371-1-andriin@fb.com>
Wrap source argument of BPF_CORE_READ family of macros into parentheses to
allow uses like this:
BPF_CORE_READ((struct cast_struct *)src, a, b, c);
Fixes: 7db3822ab991 ("libbpf: Add BPF_CORE_READ/BPF_CORE_READ_INTO helpers")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
---
tools/lib/bpf/bpf_core_read.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/lib/bpf/bpf_core_read.h b/tools/lib/bpf/bpf_core_read.h
index 7009dc90e012..eae5cccff761 100644
--- a/tools/lib/bpf/bpf_core_read.h
+++ b/tools/lib/bpf/bpf_core_read.h
@@ -217,7 +217,7 @@ enum bpf_field_info_kind {
*/
#define BPF_CORE_READ_INTO(dst, src, a, ...) \
({ \
- ___core_read(bpf_core_read, dst, src, a, ##__VA_ARGS__) \
+ ___core_read(bpf_core_read, dst, (src), a, ##__VA_ARGS__) \
})
/*
@@ -227,7 +227,7 @@ enum bpf_field_info_kind {
*/
#define BPF_CORE_READ_STR_INTO(dst, src, a, ...) \
({ \
- ___core_read(bpf_core_read_str, dst, src, a, ##__VA_ARGS__) \
+ ___core_read(bpf_core_read_str, dst, (src), a, ##__VA_ARGS__)\
})
/*
@@ -254,8 +254,8 @@ enum bpf_field_info_kind {
*/
#define BPF_CORE_READ(src, a, ...) \
({ \
- ___type(src, a, ##__VA_ARGS__) __r; \
- BPF_CORE_READ_INTO(&__r, src, a, ##__VA_ARGS__); \
+ ___type((src), a, ##__VA_ARGS__) __r; \
+ BPF_CORE_READ_INTO(&__r, (src), a, ##__VA_ARGS__); \
__r; \
})
--
2.24.1
next prev parent reply other threads:[~2020-06-17 16:21 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-17 16:18 [PATCH bpf-next 0/9] libbpf ksym support and bpftool show PIDs Andrii Nakryiko
2020-06-17 16:18 ` [PATCH bpf-next 1/9] libbpf: generalize libbpf externs support Andrii Nakryiko
2020-06-18 7:38 ` Hao Luo
2020-06-18 17:51 ` Andrii Nakryiko
2020-06-17 16:18 ` [PATCH bpf-next 2/9] libbpf: add support for extracting kernel symbol addresses Andrii Nakryiko
2020-06-17 16:18 ` [PATCH bpf-next 3/9] selftests/bpf: add __ksym extern selftest Andrii Nakryiko
2020-06-17 16:18 ` [PATCH bpf-next 4/9] tools/bpftool: move map/prog parsing logic into common Andrii Nakryiko
2020-06-18 0:30 ` Quentin Monnet
2020-06-17 16:18 ` [PATCH bpf-next 5/9] tools/bpftool: minimize bootstrap bpftool Andrii Nakryiko
2020-06-18 0:30 ` Quentin Monnet
2020-06-17 16:18 ` [PATCH bpf-next 6/9] tools/bpftool: generalize BPF skeleton support and generate vmlinux.h Andrii Nakryiko
2020-06-18 0:30 ` Quentin Monnet
2020-06-17 16:18 ` Andrii Nakryiko [this message]
2020-06-17 16:18 ` [PATCH bpf-next 8/9] tools/bpftool: show info for processes holding BPF map/prog/link/btf FDs Andrii Nakryiko
2020-06-18 0:24 ` Quentin Monnet
2020-06-18 6:01 ` Andrii Nakryiko
2020-06-18 7:51 ` Quentin Monnet
2020-06-18 17:53 ` Andrii Nakryiko
2020-06-17 16:18 ` [PATCH bpf-next 9/9] tools/bpftool: add documentation and sample output for process info Andrii Nakryiko
2020-06-18 0:25 ` Quentin Monnet
2020-06-18 5:51 ` Andrii Nakryiko
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