netdev - Re: udp packet not reach application

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Message-ID: <517E9F37.3090304@hp.com>
Date:	Mon, 29 Apr 2013 09:26:31 -0700
From:	Rick Jones <rick.jones2@...com>
To:	Min Wang <ser.basis@...il.com>
CC:	netdev@...r.kernel.org
Subject: Re: udp packet not reach application

What does netstat -s say in the UDP and IP sections?

What does tcpdump say about the checksums of the incoming UDP datagrams 
which are not being given to your application?

If you happen to send a UDP datagram from the local host to your 
application, is it received?  That is, sending a UDP datagram to your 
application via some path that does not go through this NIC?

Does your NIC claim to support checksum offload?

Just what is your NIC?

rick jones
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