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dropped UDP packets on 8270 PowerPC board
- From: Paul Randall <prandall at delta-info dot com>
- To: "ecos-discuss at sources dot redhat dot com" <ecos-discuss at sources dot redhat dot com>
- Date: Mon, 23 Jan 2006 10:19:43 -0500
- Subject: [ECOS] dropped UDP packets on 8270 PowerPC board
Hi all,
I have been having a problem with UDP packets being dropped on a
Freescale MPC8270 board we developed based on the A&M Rattler 8280 PCI
board.
I have added sequence numbers to each UDP packet being transmitted to
the board. The application running on the board prints an error message
when it detects a missing sequence number. If the board is only
receiving packets and not transmitting them, I don't get any missing
packets, even up to a bitrate of 5 Mbit/sec. However when the board has
to transmit data, I start to see missing sequence numbers in the
received data.
I'm not sure where the packets are being dropped. I tried adding debug
messages to the ethernet driver, but I'm not seeing anything so I assume
the packets are being dropped in the TCP/IP stack.
Has anyone seen this problem or know how I can find out where the
packets are being dropped?
Best regards,
Paul Randall
Delta Digital Video
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