This is the mail archive of the
ecos-discuss@sourceware.org
mailing list for the eCos project.
Re: dropped UDP packets on 8270 PowerPC board
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
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss