freebsd stable - Nov 2009 - Curiously unable to access network - bce, 7.2-RELEASE on a HP blade server

The symptoms are:

	* The device (bce0, bce1) comes up, is visible in ifconfig, can be 
configured, is UP and RUNNING, everything looks fine
	* Apparently, it simply doesn't work - no ping responses, TCP, nothing
	* But tcpdump shows that the NIC apparently does receive multicast 
router announcements, and some broadcast ARP traffic; only unicast seems 
to be affected.
	* Running "netstat 1" shows that apparently there are some packets 
received - once a second or so, and the "err" counters are 0.
	* Digging further, the dev.bce.0.stat_IfinFramesL2FilterDiscards 
contains an increasing number, currently arround 57000 and the 
dev.bce.0.stat_IfHCInBadOctets also contains an increasing number, 
currently around 450,000, while ...InOctets is around 30,000 and 
...OutBadOctets is 0.

 From the sysctls it looks like maybe it's discarding valid input 
packets. I've tried disabling rxcsum, txcsum and TSO without effect.

I cannot upgrade or install 8.0 because newusb has some problems with 
the hardware.

Any ideas?

I forgot to attach hardware details:

bce0: HP NC373i Multifunction Gigabit Server Adapter (B2) ASIC 
0x57081021 Rev B2 B/C 0x04040105 Flags 2.5G

Additional data point: I cannot reconfigure the card to 100 Mbit 
operation (currently in 1000baseSX autoselect, full-duplex).

Ivan Voras wrote:
> The symptoms are:
> 
>     * The device (bce0, bce1) comes up, is visible in ifconfig, can be 
> configured, is UP and RUNNING, everything looks fine
>     * Apparently, it simply doesn't work - no ping responses, TCP,
nothing
>     * But tcpdump shows that the NIC apparently does receive multicast 
> router announcements, and some broadcast ARP traffic; only unicast seems 
> to be affected.
>     * Running "netstat 1" shows that apparently there are some
packets
> received - once a second or so, and the "err" counters are 0.
>     * Digging further, the dev.bce.0.stat_IfinFramesL2FilterDiscards 
> contains an increasing number, currently arround 57000 and the 
> dev.bce.0.stat_IfHCInBadOctets also contains an increasing number, 
> currently around 450,000, while ...InOctets is around 30,000 and 
> ...OutBadOctets is 0.
> 
>  From the sysctls it looks like maybe it's discarding valid input 
> packets. I've tried disabling rxcsum, txcsum and TSO without effect.
> 
> I cannot upgrade or install 8.0 because newusb has some problems with 
> the hardware.
> 
> Any ideas?
> 
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