txcsum seems not working with my 3com 3c905 TX
Max Laier
max at love2party.net
Thu Aug 5 15:37:44 PDT 2004
On Friday 06 August 2004 00:24, Martin MATO wrote:
> hayes# ifconfig xl0
> xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> options=9<RXCSUM,VLAN_MTU>
> inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
> inet6 fe80::250:daff:fe42:fc4%xl0 prefixlen 64 scopeid 0x1
> ether 00:50:da:42:0f:c4
> media: Ethernet autoselect (100baseTX <full-duplex>)
> status: active
>
>
> the tx checksum offloading is not enabled y default at boot and :
> ifconfig xl0 txcsum
> give me this message:
>
> hayes# ifconfig xl0 txcsum
> ifconfig: txcsum: Invalid argument
>
>
> nota: the rxcsum and -rxcsum flags are working, and -txcsum has no
> error messages
>
>
> any ideas?
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/pci/if_xl.c#rev1.168 :
"Disable hardware TX checksumming for 3c905 series chips, as we have
solid reports that it is buggy *and* that it slows down transmit speed."
--
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