diff options
| author | Mykyta Yatsenko <yatsenko@meta.com> | 2025-05-12 21:53:46 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-05-12 18:29:03 -0700 |
| commit | d060b6aab031b6113f78cd3d1585115f13386eec (patch) | |
| tree | 92b067babe341fa9525245bab1e442f060e74ada /kernel/bpf/helpers.c | |
| parent | fd5fd538a1f4b34cee6823ba0ddda2f7a55aca96 (diff) | |
helpers: make few bpf helpers public
Make bpf_dynptr_slice_rdwr, bpf_dynptr_check_off_len and
__bpf_dynptr_write available outside of the helpers.c by
adding their prototypes into linux/include/bpf.h.
bpf_dynptr_check_off_len() implementation is moved to header and made
inline explicitly, as small function should typically be inlined.
These functions are going to be used from bpf_trace.c in the next
patch of this series.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/r/20250512205348.191079-2-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index fed53da75025..c96cc6aeae99 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -1714,16 +1714,6 @@ void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr) memset(ptr, 0, sizeof(*ptr)); } -static int bpf_dynptr_check_off_len(const struct bpf_dynptr_kern *ptr, u32 offset, u32 len) -{ - u32 size = __bpf_dynptr_size(ptr); - - if (len > size || offset > size - len) - return -E2BIG; - - return 0; -} - BPF_CALL_4(bpf_dynptr_from_mem, void *, data, u32, size, u64, flags, struct bpf_dynptr_kern *, ptr) { int err; @@ -1810,8 +1800,8 @@ static const struct bpf_func_proto bpf_dynptr_read_proto = { .arg5_type = ARG_ANYTHING, }; -static int __bpf_dynptr_write(const struct bpf_dynptr_kern *dst, u32 offset, void *src, - u32 len, u64 flags) +int __bpf_dynptr_write(const struct bpf_dynptr_kern *dst, u32 offset, void *src, + u32 len, u64 flags) { enum bpf_dynptr_type type; int err; |