From: Florian Westphal <fw@strlen.de>
To: marcmicalizzi@gmail.com
Cc: netfilter-devel@vger.kernel.org
Subject: Re: nftables flow offload possible mtu handling issue
Date: Sat, 18 May 2019 23:45:00 +0200 [thread overview]
Message-ID: <20190518214500.u6mf3oelw47i6nbi@breakpoint.cc> (raw)
In-Reply-To: <013801d50ccd$77ef0600$67cd1200$@gmail.com>
marcmicalizzi@gmail.com <marcmicalizzi@gmail.com> wrote:
> With flow offload between devices of differing mtus, there seems to be an
> issue sending from through higher mtu to the lower mtu device.
> I’m currently on 4.20 from the linux-arm mcbin branch, as it’s all I can get
> running on my specific embedded platform.
Current assumptions:
1. Flow offload can't deal with GRO skbs when MTU of oif is smaller,
as it bypasses the code in ip output that deals with this
2. flow offload expr should never offload connections that have
active helper and/or seqadj extension.
next prev parent reply other threads:[~2019-05-18 21:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-17 16:27 nftables flow offload possible mtu handling issue marcmicalizzi
2019-05-18 21:45 ` Florian Westphal [this message]
2019-05-21 1:44 ` Florian Westphal
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