From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: "Main, George" <mainge@rose-hulman.edu>,
"xdp-newbies@vger.kernel.org" <xdp-newbies@vger.kernel.org>
Subject: Re: XDP_PASS and XDP_REDIRECT
Date: Mon, 18 May 2020 20:02:08 +0200 [thread overview]
Message-ID: <87eerhnmu7.fsf@toke.dk> (raw)
In-Reply-To: <DM6PR18MB2475DD12FB5A8D747CA6ABEF9CB80@DM6PR18MB2475.namprd18.prod.outlook.com>
"Main, George" <mainge@rose-hulman.edu> writes:
> Hello All,
>
> I am working on an XDP Content Based Router project. The basic concept
> is that a machine running an XDP program acts as a gateway and accepts
> TCP connections from outside machines. Upon receiving a message it
> converts the packet to UDP and uses bpf_redirect_map to send the
> packet out through another interface.
>
> The problem I am encountering is that I want to be able to pass the
> message to userspace (where the TCP server resides) using XDP_PASS in
> addition to the redirect. I'm somewhat looking for a way to emulate
> the functionality of bpf_clone_redirect, but with support for XDP
> driver mode.
>
> Is this even possible right now? Are there any workarounds?
I am not sure I quite understand what it is you're trying to do, but no,
there is currently no way to get more than a single action for the same
packet.
-Toke
prev parent reply other threads:[~2020-05-18 18:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 16:28 XDP_PASS and XDP_REDIRECT Main, George
2020-05-18 18:02 ` Toke Høiland-Jørgensen [this message]
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