xilinx Ml405 NFS mount problem

[MingLiu]

Dear Robert> Let me guess. > You are using a base system from "Base System Builder Wizard"?> EDK 9.2i. Default syntheses/P&R options.
I am using EDK 10.1 evaluation version (60 days) from Xilinx. I don't have experience on EDK 9.2 and previously I was working on EDK 8.2. 
> I have seen a massive packet loss problems on my ML403 and two other> boards I have with an FX60.> > This is probably a hardware problem.> Xilinx has acknowledged an LL_TEMAC problem to me but has not provided a> fix. I have heard that things are better with EDK/ISE-10.1 but I have> not tested it.
I got the following message from my NFS server PC: 
 Apr  1 15:08:34 linux kernel: UDP: bad checksum. From 192.168.0.4:839 to
192.168.0.3:627 ulen 48
Apr  1 15:08:40 linux kernel: UDP: bad checksum. From 192.168.0.4:839 to
192.168.0.3:627 ulen 48
Apr  1 15:08:49 linux kernel: UDP: bad checksum. From 192.168.0.4:839 to
192.168.0.3:627 ulen 48
Apr  1 15:13:23 linux kernel: nfsd: last server has exited
Apr  1 15:13:23 linux kernel: nfsd: unexporting all filesystems
Apr  1 15:13:23 linux rpc.mountd: Caught signal 15, un-registering and
exiting.
Apr  1 15:13:24 linux kernel: NFSD: Using /var/lib/nfs/v4recovery as the
NFSv4 state recovery directory
Apr  1 15:13:24 linux kernel: NFSD: recovery directory
/var/lib/nfs/v4recovery doesn't exist
Apr  1 15:13:24 linux kernel: NFSD: starting 90-second grace period
Apr  1 16:02:57 linux syslog-ng[3700]: STATS: dropped 0
Apr  1 17:02:57 linux syslog-ng[3700]: STATS: dropped 0
Apr  1 18:02:58 linux syslog-ng[3700]: STATS: dropped 0
I shows "UDP bad checksum" from my board to the PC. I don't know if it has something to do with the package loss problem. 
 > The vendor of one of my boards (Pico) has fixed the problem on the FX60> by highly constraining the timing of the LL_TEMAC in map/PR. On my> ML403 I used similar constraints and it fixed the problem, but only if> the device is plugged into a GigE switch. The problem is still there> with the same .bit file on a 100-T switch. 
I connect the board with the PC point-to-point with gigabit ethernet. It should be even better than a Gigabit switch, right? 
 
BR
Ming
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