nfe driver 6.2 stable

[Chris]

On 24/09/2007, Jeremy Chadwick <koitsu at freebsd.org> wrote:
> 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 |
>
>

Ok to recap I have nforce 430 MCP13

I checked the src and current and 6.2-stable driver I am using are the
same version number but my driver src has this added above tunables.

/* definitions for backporting RELENG-6 */
#ifndef IFCAP_TSO4
#define IFCAP_TSO4      0
#define CSUM_TSO        0
#endif
#ifndef VLAN_CAPABILITIES
#define VLAN_CAPABILITIES(x)
#endif
#ifndef IFCAP_VLAN_HWCSUM
#define IFCAP_VLAN_HWCSUM       0
#endif

I am guessing If I set the values to 1 I get the features but would
like someone to confirm this for me before I try it thanks.  I only
have remote access so if it stops the card working I lose access to
the box.

Chris