[Bro] RSS and packet reordering

[Seth Hall]

On Aug 20, 2014, at 3:30 AM, Björn Samvik <Bjorn.Samvik at netclean.com> wrote:

> Anyone have experience with RSS and have any ideas how the packet 
> reordering issue can be mitigated?

Are you using straight RSS without any modifications?  By default the Toeplitz hash that RSS uses is not a bidirectional hash.  i.e., each flow of a connection ends up on a different NIC queue.  As a general rule though, you should try to avoid anything that could result in packet reordering.

Another question, how are you making Bro attach to the various NIC hardware queues?

  .Seth

--
Seth Hall
International Computer Science Institute
(Bro) because everyone has a network
http://www.bro.org/

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