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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH v4 net-next 0/8] flow_dissector: Protocol specific flow
 dissector offload
Date: Fri, 29 Sep 2017 18:42:45 +0100 (WEST)
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From: Tom Herbert <tom@herbertland.com>
Date: Fri, 29 Sep 2017 08:48:55 -0700

> The flow_dissector interface is not a uAPI.

That's not true, insofar as cls_flower.c uses the flow_dissector
therefore if you change the flow_dissector in certain ways then
cls_flower.c might have it's behavior changed and that is in fact UAPI
facing.