Re: nve related LOR triggered by lots of small packets, and a hard hang

On Wed, Mar 07, 2007 at 02:05:35PM +0200, Danny Braniss wrote:
 > > On Wed, Feb 21, 2007 at 12:17:52PM +0200, Danny Braniss wrote:
 > >  > > Pyun YongHyeon wrote:
 > >  > > > Because your dmesg for nfe(4) shows 'obsoleted if_watchdog interface'
 > >  > > > message I think you've used stock nfe(4) on CURRENT.
 > >  > > > Try overhauld nfe(4) at the following URL.
 > >  > > > 
 > >  > > > http://people.freebsd.org/~yongari/nfe/if_nfe.c
 > >  > > > http://people.freebsd.org/~yongari/nfe/if_nfereg.h
 > >  > > > http://people.freebsd.org/~yongari/nfe/if_nfevar.h
 > >  > > > 
 > >  > > > The new nfe(4) has several protections for watchdog timeout errors
 > >  > > > reported on the driver. One user repored TSO related issues for
 > >  > > > the new driver so if you encounter strange errors in the new driver
 > >  > > > please turn off TSO capability(e.g. #ifconfig nfe0 -tso)
 > >  > > 
 > >  > hi,
 > >  > I'm having 2 - probably related - problems:
 > >  > 1- on a diskless host, it boots via PXE, attaches the NIC
 > >  >    but somehow the mount root nsf is bypassed.
 > >  > 2- booting of the disk, and with ifconfig_nfe0="DHCP", dhclient
 > >  >    fails.
 > >  > 
 > >  > if I run:
 > >  > 	dhclient nfe0
 > >  > all is fine.
 > >  > 
 > >  > adding 'net.inet.tcp.tso="0"' to sysctl.conf fixed 2, but
 > >  > adding the same to loader.conf did not help with the PXE boot.
 > >  > 
 > >  > danny
 > >  > 
 > >  > 
 > > 
 > > Sorry for late reply.
 > > Do you use MCP65 based hardware? It seems that MCP65 does not have
 > > checksum offload capability on the hardware so TSO should not be
 > > used on MCP65.
 > 
 > it's supposed to be a MCP51, but:
 > nfe0: <NVIDIA nForce 430 MCP12 Networking Adapter>
 > 
 > > (Due to lack of datasheet I've unconditionally enabled TSO for
 > > hardwares that have checksum offload capability.)
 > > dmesg will show you what hardware were attached.
 > > 
 > > If your hardware is not MCP65 based one please try latest tcp_output.c
 > > (rev, 1.125). Recently andre_at_ fixed TSO related bug.
 > 
 > I tried the latest, and it 'seems' to work ok if I boot of the disk, but still having
 > problems when booting via PXE:
 > 
 > ...
 > nfe0: <NVIDIA nForce 430 MCP12 Networking Adapter> port 0xdc00-0xdc07 mem 0xfe02c000-0xfe02cfff irq 22 at device 20.0 on pci0
 > nfe0: Ethernet address: 57:6c:a9:f3:18:00
 > miibus1: <MII bus> on nfe0
 > e1000phy0: <Marvell 88E1111 Gigabit PHY> PHY 11 on miibus1
 > e1000phy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX-FDX, auto
 > nfe0: [ITHREAD]
 > ...
 > nfs_diskless: no interface
 > ...
 > 
 > 	danny
 > PS: maybe it's time to change the Subject:?
 > 

Yes, but I guess PXE booting has nothing to do with nfe(4).
If my memory serve me right I've used 'options BOOTP_WIRED_TO=hme0'
to net-boot on sparc64.

 > 

-- 
Regards,
Pyun YongHyeon