6.3 nfe: strange behavior after hand

[Andriy Gapon]

I am using nfe on 6.3 amd63 system with the code from here:
http://www.f.csce.kyushu-u.ac.jp/~shigeaki/software/freebsd-nfe.html

Everything is OK except for one small, but annoying problem. Sometimes
when my system hangs and I have to use reset button, nfe stops working
after reboot. ifconfig shows proper status and medium, there are no
kernel error/debug messages, on the surface everything seems good. But
if I try to ping a machine connected to the same switch I get "host
down" responses. So, no network at all. Unloading and reloading if_nfe
module doesn't help, various ifconfig re-configurations do not help too.
Although, if I do power off and then boot, everything is perfect again.

Until a couple of weeks ago I used 6.2 amd64 and nve (patched to
recognize pci id of this card) and I never had such a problem.

To un-enlightened me it seems like some resetting/re-initialization of
the card is not done properly by nfe.

Additional info.
dmesg:
nfe0: <NVIDIA nForce 430 MCP13 Networking Adapter> port 0xc800-0xc807
mem 0xfe02b000-0xfe02bfff irq 23 at device 20.0 on pci0
miibus0: <MII bus> on nfe0
e1000phy0: <Marvell 88E1116 Gigabit PHY> on miibus0
e1000phy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseTX-FDX, auto
nfe0: Ethernet address: 00:18:f3:d4:43:1e
nfe0: [FAST]

ifconfig (output is the same in both working and non-working cases):
nfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        options=8<VLAN_MTU>
        inet 10.2.1.87 netmask 0xfffffc00 broadcast 10.2.3.255
        ether 00:18:f3:d4:43:1e
        media: Ethernet autoselect (1000baseTX <full-duplex,flag0,flag1>)
        status: active

pciconf:
nfe0 at pci0:20:0: class=0x068000 card=0x816a1043 chip=0x026910de rev=0xa3
hdr=0x00
    vendor     = 'Nvidia Corp'
    device     = 'MCP51 Network Bus Enumerator'
    class      = bridge


P.S. as always with network issues, I understand that it may be not so
simple, e.g. some interaction between the card and the switch, etc.

-- 
Andriy Gapon