Problems with axe(4) and checksum offloading

YongHyeon PYUN pyunyh at gmail.com
Mon Apr 8 06:36:01 UTC 2013


On Sun, Apr 07, 2013 at 09:14:16PM +0200, Spil Oss wrote:
> Hi all,
> 
> With checksum offloading enabled I cannot use my axe NIC (ASIX AX88772B).
> 
> ifconfig ue0 -txcsum -rxcsum
> will make dhclient ue0 return
> 
> if I re-enable txcsum and rxcsum I get an immediate response from the dhcp
> server.
> 
> Tried to remove the csum features by commenting out
> ifp->if_capabilities |= IFCAP_TXCSUM | IFCAP_RXCSUM;
> ifp->if_hwassist = AXE_CSUM_FEATURES;
> (lines 855 and 856 in /usr/src/sys/dev/usb/net/if_axe.c)
> and rebuild the module. This does remove RXCSUM and TXCSUM from options and
> behaves the same as disabling the features with ifconfig (i.e. does not
> work)
> 
> 10.0-CURRENT r248351
> 
> Hope someone can help me... Spil.

Last time I tried, checksum offloading worked as expected.
Would you show me the verbose dmesg output after attaching the
axe(4) NIC?


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