Date: Mon, 16 May 2016 00:03:41 -0700 (PDT) From: Don Lewis <truckman@FreeBSD.org> To: freebsd-net@FreeBSD.org Subject: changing net.inet.tcp.ecn.enable=1 to a three-way knob Message-ID: <201605160703.u4G73fmW070195@gw.catspoiler.org>
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I posted a patch here: <https://reviews.freebsd.org/D6386>; to change net.inet.tcp.ecn.enable from a binary off/on knob to a three way knob that adds a setting allow incoming TCP connections to negotiate ECN while outgoing connections don't request ECN. Always requesting ECN on outgoing connections can be troublesome because of the number of broken middle-boxes that block ECN connections (though we do have a fallback to turning off ECN if the initial connection request fails). I'd like to get this into HEAD before the code slush.
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