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| author | Andrii Nakryiko <andrii@kernel.org> | 2024-01-31 00:20:22 +0300 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2024-01-31 02:55:50 +0300 |
| commit | 20d59ee55172fdf6072abf871fa62b2070d6383f (patch) | |
| tree | 943d0e21220a3f83781da27546c470cbd56f71cf /tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c | |
| parent | 4d8ebe1304e99cf6e08e432c23041638d6d1de56 (diff) | |
| download | linux-20d59ee55172fdf6072abf871fa62b2070d6383f.tar.xz | |
libbpf: add bpf_core_cast() macro
Add bpf_core_cast() macro that wraps bpf_rdonly_cast() kfunc. It's more
ergonomic than kfunc, as it automatically extracts btf_id with
bpf_core_type_id_kernel(), and works with type names. It also casts result
to (T *) pointer. See the definition of the macro, it's self-explanatory.
libbpf declares bpf_rdonly_cast() extern as __weak __ksym and should be
safe to not conflict with other possible declarations in user code.
But we do have a conflict with current BPF selftests that declare their
externs with first argument as `void *obj`, while libbpf opts into more
permissive `const void *obj`. This causes conflict, so we fix up BPF
selftests uses in the same patch.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240130212023.183765-2-andrii@kernel.org
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c index 3e745793b27a..934c4e5ada5b 100644 --- a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c +++ b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c @@ -12,8 +12,6 @@ int cookie_found = 0; __u64 cookie = 0; __u32 omem = 0; -void *bpf_rdonly_cast(void *, __u32) __ksym; - struct { __uint(type, BPF_MAP_TYPE_SK_STORAGE); __uint(map_flags, BPF_F_NO_PREALLOC); |