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Re: [netvirt-dev] ISE in openflowjava for msg deserialization failure
Aizer, Koby <koby.aizer@...>
Hi,toggle quoted message Show quoted text
I looked into this exception a little bit, and I think it is caused by flow stats received from table=49. This table includes rules like:
cookie=0x8600000, duration=1.507s, table=49, n_packets=0, n_bytes=0, hard_timeout=10, priority=0,reg1=0x2/0xfffff,dl_src=fa:16:3e:7d:5a:42 actions=load:0x1->NXM_NX_REG4[0..7]
I've tcpdumped the flowstats, and for some reason the REG1 OXM value is 8byte long, while openflowplugin assumes it is 4byte long - and I think this causes the decoder to fail (the exception is just a side effect of the decoder trying to decode the additional 4bytes as the next OXM field) . Other reg matches (for example, the ones from table=220) are indeed 4byte long.
Not sure why the table=49 reg matches have a different size, the only reason I can think of is that those matches are created by OVS learn action. My knowledge pretty much ends here - Could it be those are 64bit register matches or something?
I attached the pcap capture to the bug so others can take a look as well.
From: netvirt-dev-bounces@... [mailto:netvirt-dev-bounces@...] On Behalf Of Jamo Luhrsen
Sent: Thursday, March 9, 2017 6:53 PM
To: Abhijit Kumbhare <abhijitkoss@...>
Cc: openflowjava-dev@...; netvirt-dev@...; openflowplugin-dev@...
Subject: Re: [netvirt-dev] [openflowjava-dev] ISE in openflowjava for msg deserialization failure
yeah, thats it.
On 03/09/2017 08:44 AM, Abhijit Kumbhare wrote:
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