I will find it out. And I don't have v3.16 and I'm not going to upgrade
my OS to that. Sorry. So I would just stick to v3.13. Anyway, that size
is wrong, it should be fixed.

Regards,
Kevin

On 12/04/2014 05:19 PM, Bjørn Mork wrote:

Kevin Zhu [off-list ref] writes:

quoted

Guys,

After rearranging the padding, putting NCM0 right after NTH, and disable
ARP (FLAG_NOARP) and handling the offset alignment issue, it seems it
begins to work, though there's still problem with DHCP.

Great!  But it would be good to know if _one_ of these changes is enough
to make it work.

quoted

The DHCP packet's size becomes a large one after the TX function, which
is 16384, the maximum.

You can now (from v3.16) disable the padding by setting min_tx_pkt >= tx_max.
Something like this should do for a simple test:

  echo 16384 >/sys/class/net/wwan0/cdc_ncm/min_tx_pkt


Bjørn

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