Re: [Bug 120441] af_packet no longer uses symmetric hashing

On 16.06.2016 16:37, Daniel Borkmann wrote:

On 06/16/2016 03:57 PM, Derek Ditch wrote:
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quoted

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Begin forwarded message:

From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 120441] af_packet no longer uses symmetric hashing
Date: June 16, 2016 at 07:35:54 -0500
To: derek.ditch@gmail.com

https://bugzilla.kernel.org/show_bug.cgi?id=120441

Just thinking out loud, perhaps one way would be to implement your own
fanout
hashing via eBPF demuxer, f.e. in case CPU selection etc wouldn't work.
Another
option could be to have a (2nd) customizable hash demux that would
enforce to
always go through the flow-dissector and where you would have a socket
option
to control keys for it, but I presume that seems rather less desirable.

Isn't a symmetric hashing for af-packet something very fundamental?
Looks much more like a bug to me.

Bye,
Hannes