Type Alias attr_callback_t 

pub type attr_callback_t = *mut fn(attr: *const Attribute, data: *mut u8) -> i32;

Function pointer type for attribute callback handlers

Callbacks receive a pointer to the current attribute and user-provided data, and return an integer status code.

Parameters

• attr - Pointer to the current netlink attribute being processed
• data - User-provided data pointer that’s passed to the callback

Returns

Integer status code indicating whether processing should continue