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| author |   Andrii Nakryiko <andrii@kernel.org> | 2022-05-08 17:41:41 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2022-05-09 17:14:40 +0200 |
| commit | 8e2f618e8be66f74e6e088281ca72deb5c87cf04 (patch) | |
| tree | 85ff3bfc3436208a57c6dff2f52ca98d87eb4b84 | |
| parent | selftests/bpf: Prevent skeleton generation race (diff) | |
| download | wireguard-linux-8e2f618e8be66f74e6e088281ca72deb5c87cf04.tar.xz wireguard-linux-8e2f618e8be66f74e6e088281ca72deb5c87cf04.zip | |
libbpf: Make __kptr and __kptr_ref unconditionally use btf_type_tag() attr
It will be annoying and surprising for users of __kptr and __kptr_ref if
libbpf silently ignores them just because Clang used for compilation
didn't support btf_type_tag(). It's much better to get clear compiler
error than debug BPF verifier failures later on.
Fixes: ef89654f2bc7 ("libbpf: Add kptr type tag macros to bpf_helpers.h")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220509004148.1801791-3-andrii@kernel.org
| -rw-r--r-- | tools/lib/bpf/bpf_helpers.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h index 5de3eb267125..bbae9a057bc8 100644 --- a/tools/lib/bpf/bpf_helpers.h +++ b/tools/lib/bpf/bpf_helpers.h @@ -149,13 +149,8 @@ enum libbpf_tristate { #define __kconfig __attribute__((section(".kconfig"))) #define __ksym __attribute__((section(".ksyms"))) -#if __has_attribute(btf_type_tag) #define __kptr __attribute__((btf_type_tag("kptr"))) #define __kptr_ref __attribute__((btf_type_tag("kptr_ref"))) -#else -#define __kptr -#define __kptr_ref -#endif #ifndef ___bpf_concat #define ___bpf_concat(a, b) a ## b |