Re: [PATCH v2 2/5] bpf: Add a bpf_sock_from_file helper

[Martin KaFai Lau]

On Thu, Nov 19, 2020 at 05:26:51PM +0100, Florent Revest wrote:
> From: Florent Revest <revest@xxxxxxxxxx>
> 
> While eBPF programs can check whether a file is a socket by file->f_op
> == &socket_file_ops, they cannot convert the void private_data pointer
> to a struct socket BTF pointer. In order to do this a new helper
> wrapping sock_from_file is added.
> 
> This is useful to tracing programs but also other program types
> inheriting this set of helpers such as iterators or LSM programs.
Acked-by: Martin KaFai Lau <kafai@xxxxxx>