netdev - Re: [PATCH] packet: Use symmetric hash for PACKET_FANOUT

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Message-Id: <20160701.170701.1456256736115514983.davem@davemloft.net>
Date:	Fri, 01 Jul 2016 17:07:01 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	tom@...bertland.com
Cc:	netdev@...r.kernel.org, eric@...it.org, victor@...iniac.net
Subject: Re: [PATCH] packet: Use symmetric hash for PACKET_FANOUT_HASH.

From: Tom Herbert <tom@...bertland.com>
Date: Fri, 1 Jul 2016 13:52:58 -0700

> Why are symmetric hashes required?

Because they want load balancing, such that one flow only can overrun
one single socket not all of the ones in the fanout.

Every single user of AF_PACKET fanout wants this behavior.