Date: Sun, 23 Sep 2007 19:01:16 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Chris <chrcoluk@gmail.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, freebsd-hardware@freebsd.org Subject: Re: nfe driver 6.2 stable Message-ID: <20070924020116.GA36909@eos.sc1.parodius.com> In-Reply-To: <3aaaa3a0709231657r3264c873ife71800731608b03@mail.gmail.com> References: <3aaaa3a0709231657r3264c873ife71800731608b03@mail.gmail.com>
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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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