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Date:      Tue, 05 Jan 2016 21:18:45 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-pf@FreeBSD.org
Subject:   [Bug 198868] pf brakes tcp checksum if enabled for ue adapter
Message-ID:  <bug-198868-17777-hI9jIo68e6@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-198868-17777@https.bugs.freebsd.org/bugzilla/>
References:  <bug-198868-17777@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D198868

--- Comment #8 from Kristof Provost <kp@freebsd.org> ---
Created attachment 165123
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D165123&action=
=3Dedit
Test-patch

Here's a pretty quick patch which simply disables handling partial checksum
offloading in pf. I.e. we treat a partially offloaded checksum as if there'=
s no
checksum offloading at all.

The downside is that we'll spend CPU time calculating something the interfa=
ce
itself already calculated, but it should fix this problem.
As far as I can tell this would only affect a handful of older cards anyway,
and as I don't have any affected hardware this is likely the best I can do.

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