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

On Mon, Oct 6, 2025 at 8:00 PM Rong Tao rtoax@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