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Re: UDP checksum invalid on FreeBSD7/x86



On Fri, Jun 20, 2008 at 11:54:55AM +0200, Peter Kirk wrote:
 > On Friday 20 June 2008 11:38:16 Andrey V. Elsukov wrote:
 > > Peter Kirk wrote:
 > > >> Can you show `ifconfig -u` output?
 > > >
 > > > re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
 > > >         options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
 > >
 > > It's problem in re(4) driver.
 > > Try to use `ifconfig re0 -rxcsum -txcsum`. You can add these
 > > parameters to your rc.conf.
 > 
 > In /etc/rc.conf I changed the line
 > ifconfig_re0="inet 192.168.1.13  netmask 255.255.255.0"
 > to
 > ifconfig_re0="-rxcsum -txcsum inet 192.168.1.13  netmask 255.255.255.0"
 > 
 > Now the problem no longer appears, even with "net.inet.udp.checksum=1". Thanks 
 > for answering this so promptly, hopefuly the re(4) driver can be fixed to 
 > avoid this kind of problem (or the -rxcsum -txcsum added automatically for 
 > this card).

Try re(4) on 7-stable and let me know how it goes.
Most checksum offload and bus_dma(9) related issues were fixed in
7-stable.

-- 
Regards,
Pyun YongHyeon
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