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SubjectRe: [PATCH v16 04/12] bpf: Export bpf_dynptr_get_size()
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Hi,

On 9/5/2022 10:33 PM, Roberto Sassu wrote:
> From: Roberto Sassu <roberto.sassu@huawei.com>
>
> Export bpf_dynptr_get_size(), so that kernel code dealing with eBPF dynamic
> pointers can obtain the real size of data carried by this data structure.
>
> Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
> Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
> Acked-by: KP Singh <kpsingh@kernel.org>
> ---
> include/linux/bpf.h | 1 +
> kernel/bpf/helpers.c | 2 +-
> 2 files changed, 2 insertions(+), 1 deletion(-)
SNIP
> diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
> index fc08035f14ed..824864ac82d1 100644
> --- a/kernel/bpf/helpers.c
> +++ b/kernel/bpf/helpers.c
> @@ -1408,7 +1408,7 @@ static void bpf_dynptr_set_type(struct bpf_dynptr_kern *ptr, enum bpf_dynptr_typ
> ptr->size |= type << DYNPTR_TYPE_SHIFT;
> }
>
> -static u32 bpf_dynptr_get_size(struct bpf_dynptr_kern *ptr)
> +u32 bpf_dynptr_get_size(struct bpf_dynptr_kern *ptr)
> {
> return ptr->size & DYNPTR_SIZE_MASK;
> }
qp-trie also need it. But considering bpf_dynptr_get_size() is just one line,
Would moving it and the related definitions into bpf.h be a better choice ?


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