> Subject: Re: [RFC PATCH net-next 9/9] ethtool: Add ability to flash transceiver
> modules' firmware
>
> > +static int
> > +module_flash_fw_schedule(struct net_device *dev,
> > + struct ethtool_module_fw_flash_params *params,
> > + struct netlink_ext_ack *extack)
> > +{
> > + const struct ethtool_ops *ops = dev->ethtool_ops;
> > + struct ethtool_module_fw_flash *module_fw;
> > + int err;
> > +
> > + if (!ops->set_module_eeprom_by_page ||
> > + !ops->get_module_eeprom_by_page) {
> > + NL_SET_ERR_MSG(extack,
> > + "Flashing module firmware is not supported by
> this device");
> > + return -EOPNOTSUPP;
> > + }
> > +
> > + if (dev->module_fw_flash_in_progress) {
> > + NL_SET_ERR_MSG(extack, "Module firmware flashing already
> in progress");
> > + return -EBUSY;
> > + }
> > +
> > + module_fw = kzalloc(sizeof(*module_fw), GFP_KERNEL);
> > + if (!module_fw)
> > + return -ENOMEM;
> > +
> > + module_fw->params = *params;
> > + err = request_firmware(&module_fw->fw, module_fw-
> >params.file_name,
> > + &dev->dev);
>
> How big are these firmware blobs?
>
> Ideally we want to be able to use the same API to upgrade things like GPON
> modules, which often run an openwrt image, and they are plugged into a cable
> modem which does not have too much RAM.
>
> Given that the interface to the EEPROM is using 128 byte 1/2 pages, would it
> be possible to use request_partial_firmware_into_buf() to read it on demand,
> rather than all at once?
>
> Andrew
OK, Ill handle that in the actual version.
Thanks.
