nfe driver 6.2 stable
Jeremy Chadwick
koitsu at FreeBSD.org
Sun Sep 23 19:17:44 PDT 2007
On Mon, Sep 24, 2007 at 12:57:23AM +0100, Chris wrote:
> nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> options=8<VLAN_MTU>
> inet x.x.x.x netmask 0xffffff00 broadcast x.x.x.x
> inet x.x.x.x netmask 0xffffffff broadcast x.x.x.x
> ether x
> media: Ethernet autoselect (1000baseTX <full-duplex>)
> status: active
>
> 1 - is there a man page for nfe anywhere?
Closest thing I can find would be the manpage from -CURRENT's nfe(4),
which is supposedly the same code.
http://www.freebsd.org/cgi/man.cgi?query=nfe&apropos=0&sektion=0&manpath=FreeBSD+7-current&format=html
> 2 - does it support hardware checksum I remember reading it does but
> from ifconfig output it appears to not be in use so if it does support
> it how do I enable it?
It does support it, but I don't know the circumstances surrounding when
it gets enabled. That is to say, it's known that some versions of the
chip (and/or associated PHY) have bugs, so possibly hardware checksum
offloading is known to be broken on the system you're on. Taken from my
7-CURRENT box at home (Asus A8N-E, nForce 4-based):
nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=10b<RXCSUM,TXCSUM,VLAN_MTU,TSO4>
ether 00:15:f2:17:30:e9
inet 192.168.1.51 netmask 0xffffff00 broadcast 192.168.1.255
media: Ethernet 1000baseTX <full-duplex>
status: active
I do not explicitly specify rxcsum or txcsum in my rc.conf ifconfig
line.
> 3 - same with TOS?
TOS (type-of-service) or TSO? If TSO, see above ifconfig.
> 4 - how do I enable jumbo frames if it supports it?
You should take a bit more itme to read the webpage you obtained the
driver from. I see these on the page:
2007/01/06 Added jumbo frame support. [...] Fixed a bug to handle
Tx/Rx checksum offload settings with ifconfig.
2006/08/11 Added support for jumbo frame capability.
yongari@ (Pyun YongHyeon) should be able to provide additional help
with both.
> 5 - is it safe to use with zero copy sockets?
No idea.
> 6 - I currently have both net.isr.direct and mpsafenet disabled is
> this driver safe to use on them?
No idea.
--
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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