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Message-ID: <3808085.1699777584@dyas>
Date: Sun, 12 Nov 2023 09:26:24 +0100
From: Michael Richardson <mcr@...delman.ca>
To: Christian Hopps <chopps@...pps.org>, devel@...ux-ipsec.org,
    netdev@...r.kernel.org, Christian Hopps <chopps@...n.net>
Subject: Re: [devel-ipsec] [RFC ipsec-next 4/8] iptfs: sysctl: allow configuration of global default values


>>>>> Christian Hopps <chopps@...n.net> writes:
Christian Hopps via Devel <devel@...ux-ipsec.org> wrote:
    > Add sysctls for the changing the IPTFS default SA values.

Add sysctls for the changing the IPTFS default SA values.

+xfrm_iptfs_idelay - UNSIGNED INTEGER
+        The default IPTFS initial output delay. The initial output delay is the
+        amount of time prior to servicing the output queue after queueing the
+        first packet on said queue.

I'm guessing this is in miliseconds, but the documentation here does not say.

+xfrm_iptfs_rewin - UNSIGNED INTEGER
+        The default IPTFS reorder window size. The reorder window size dictates
+        the maximum number of IPTFS tunnel packets in a sequence that may arrive
+        out of order.
+
+        Default 3.

Why three?
Is there some experimental reason to pick three?
It seems that maybe the reorder window size could have been a per-SA attribute.

I read through the rest of the patches, and they seem great, but I didn't
read with a lot of comprehension.  I found the explanatory comments and
diagrams very well done!


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