esp_idf_sys

Function lwip_getsockopt_impl_ext

Source 
pub unsafe extern "C" fn lwip_getsockopt_impl_ext(
    sock: *mut lwip_sock,
    level: c_int,
    optname: c_int,
    optval: *mut c_void,
    optlen: *mut u32,
    err: *mut c_int,
) -> bool