Re: [PATCH bpf-next v3 1/2] bpf: add bpf_strcasestr,bpf_strncasestr kfuncs

[Alexei Starovoitov]

On Mon, Oct 6, 2025 at 8:00 PM Rong Tao <rt...@foxmail.com> wrote:
>
> +/**
> + * bpf_strnstr - Find the first substring in a length-limited string, 
> ignoring
> + *               the case of the characters
> + * @s1__ign: The string to be searched
> + * @s2__ign: The string to search for
> + * @len: the maximum number of characters to search
> + *
> + * Return:
> + * * >=0      - Index of the first character of the first occurrence of 
> @s2__ign
> + *              within the first @len characters of @s1__ign
> + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign
> + * * %-EFAULT - Cannot read one of the strings
> + * * %-E2BIG  - One of the strings is too large
> + * * %-ERANGE - One of the strings is outside of kernel address space
> + */
> +__bpf_kfunc int bpf_strncasestr(const char *s1__ign, const char *s2__ign,
> +                                                               size_t len)

See AI review for the above part.

pw-bot: cr