[ECOS] dropped UDP packets on 8270 PowerPC board

[Paul Randall]

Andrew Lunn wrote:

>On Mon, Jan 23, 2006 at 05:34:33PM -0500, Paul Randall wrote:
>  
>
>>Andrew Lunn wrote:
>>I tried setting a breakpoint in udp_usrreq.c but Insight would not let 
>>me put a watch on the udpstat structure so I could not get a breakdown 
>>of the bad packets.
>>    
>>
>
>Try a breakpoint at udp_usrreq.c:435.
>
>Otherwise just hit the stop button then take a look at cyg_udpstat and
>cyg_ipstat.
>
>        Andrew
>
>  
>
Hi Andrew,

I ran my application for a few minutes during which time the application 
detected 20 missing packets based on the sequence number.  Then I 
stopped the debugger and looked at the cyg_udpstat and cyg_ipstat 
structures.

For cyg_udpstat, the only non-zero counts were:
ipackets 60278
noportbcast 22
opackets 1404

For cyg_ipstat the non-zero counts were:
total 60278
noproto 4
delivered 60278
localout 3868
tooshort 1

The packets I am receiving (some of which are lost) are usually 1200 
bytes long although a few are smaller.  The packets I am sending are 512 
bytes long.

So I'm still at a loss as to where or why the packets are being 
dropped.  Any other suggestions?

Best regards,

Paul Randall
Delta Digital Video

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