Re: Problems with axe(4) and checksum offloading

On Mon, Apr 08, 2013 at 08:45:58PM +0200, Spil Oss wrote:
> Hi YongHyeon,
> 
> output from verbose boot
> 
> ugen3.2: <vendor 0x0b95> at usbus3
> axe0: <vendor 0x0b95 product 0x772b, rev 2.00/0.01, addr 2> on usbus3
> axe0: PHYADDR 0xe0:0x10
> miibus1: <MII bus> on axe0
> ukphy0: <Generic IEEE 802.3u media interface> PHY 16 on miibus1
> ukphy0: OUI 0x007063, model 0x0008, rev. 1
> ukphy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto,
> auto-flow
> ue0: <USB Ethernet> on axe0
> ue0: bpf attached
> ue0: Ethernet address: 00:60:6e:42:5b:53
> ue0: link state changed to UP
> ue0: link state changed to DOWN
> ue0: link state changed to UP

AX88772B engineering sample I have still worked on latest current.
Could you use a static IP rather than using DHCP and see whether
that makes any difference?(Note, you have to revert your changes
made to axe(4) before trying that).

Also show me the output of 'ifconfig ue0' before/after running
dhclient(8).

> 
> Apart from what I originally described...
> Networking does work, but not when packets pass through ipfw and nat. If I
> add my ipfw rules before the divert natd rule networking works as expected,
> without the SYN,ACK response packets are not accepted if I e.g. connect to
> something on the axe interface. I have validated the ipfw ruleset with the
> onboard realtek NIC and it then works as expected.
> 
> # usbconfig -u 3 -a 2 dump_info
> ugen3.2: <product 0x772b vendor 0x0b95> at usbus3, cfg=0 md=HOST spd=HIGH
> (480Mbps) pwr=ON (200mA)
> 
> Kind regards,
> 
> Spil.
> 
> 
> On Mon, Apr 8, 2013 at 8:35 AM, YongHyeon PYUN <pyunyh_at_gmail.com> wrote:
> 
> > 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?
> >