From: Kristian Evensen <kristian.evensen@xxxxxxxxx>
Date: Tue, 19 Jul 2016 16:54:11 +0200
> The firmware in several ZTE devices (at least the MF823/831/910
> modems/mifis) use OS fingerprinting to determine which type of device to
> export. In addition, these devices export a REST API which can be used to
> control the type of device. So far, on Linux, the devices have been seen as
> RNDIS or CDC Ether.
>
> When CDC Ether is used, devices of the same type are, as with RNDIS,
> exported with the same, bogus random MAC address. In addition, the devices
> (at least on all firmware revisions I have found) use the bogus MAC when
> sending traffic routed from external networks. And as a final feature, the
> devices sometimes export the link state incorrectly. There are also
> references online to several other ZTE devices displaying this behavior,
> with several different PIDs and MAC addresses.
>
> This patch tries to improve the handling of ZTE devices by doing the
> following:
Please fix these warnings and resubmit:
CC [M] drivers/net/usb/cdc_ether.o
drivers/net/usb/cdc_ether.c: In function ʽusbnet_cdc_zte_rx_fixupʼ:
drivers/net/usb/cdc_ether.c:461:5: warning: unused variable ʽbuggy_hwaddrs_idxʼ [-Wunused-variable]
u8 buggy_hwaddrs_idx = 0;
^
drivers/net/usb/cdc_ether.c:460:5: warning: unused variable ʽnum_buggy_hwaddrsʼ [-Wunused-variable]
u8 num_buggy_hwaddrs;
^
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