Function otThreadSetVendorName 

pub unsafe extern "C" fn otThreadSetVendorName(
    aInstance: *mut otInstance,
    aVendorName: *const c_char,
) -> otError

Set the vendor name string.

Requires OPENTHREAD_CONFIG_NET_DIAG_VENDOR_INFO_SET_API_ENABLE.

@p aVendorName should be UTF8 with max length of 32 chars (MAX_VENDOR_NAME_TLV_LENGTH). Maximum length does not include the null \0 character.

If OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE is enabled, @p aVendorName must start with the “RD:” prefix. This is enforced to ensure reference devices are identifiable. If @p aVendorName does not follow this pattern, the name is rejected, and OT_ERROR_INVALID_ARGS is returned.

@param[in] aInstance A pointer to an OpenThread instance. @param[in] aVendorName The vendor name string.

@retval OT_ERROR_NONE Successfully set the vendor name. @retval OT_ERROR_INVALID_ARGS @p aVendorName is not valid. It is too long, is not UTF-8, or does not start with the “RD:” prefix when OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE is enabled.