From: "Assaad, Sami (Sami)" <sami.assaad@alcatel-lucent.com>
To: Matt Laswell <laswell@infiniteio.com>,
"Wiles, Keith" <keith.wiles@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] DPDK Port Mirroring
Date: Thu, 9 Jul 2015 20:30:52 +0000 [thread overview]
Message-ID: <9478F0FB69DAA249AF0A9BDA1E6ED95218849255@US70TWXCHMBA07.zam.alcatel-lucent.com> (raw)
In-Reply-To: <CA+GnqAq3wVaiLgwTdK9CuabBo43wQthZCLJqFmVcfZt5fwD4sw@mail.gmail.com>
Big Thanks!
Sami.
From: Matt Laswell [mailto:laswell@infiniteio.com]
Sent: Thursday, July 09, 2015 4:28 PM
To: Wiles, Keith
Cc: Assaad, Sami (Sami); dev@dpdk.org; Richardson, Bruce
Subject: Re: [dpdk-dev] DPDK Port Mirroring
Keith speaks truth. If I were going to do what you're describing, I would do the following:
1. Start with the l2fwd example application.
2. Remove the part where it modifies the ethernet MAC address of received packets.
3. Add a call in to clone mbufs via rte_pktmbuf_clone() and send the cloned packets out of the port of your choice
As long as you don't need to modify the packets - and if you're mirroring, you shouldn't - simply cloning received packets and sending them out your mirror port should get you most of the way there.
On Thu, Jul 9, 2015 at 3:17 PM, Wiles, Keith <keith.wiles@intel.com<mailto:keith.wiles@intel.com>> wrote:
On 7/9/15, 12:26 PM, "dev on behalf of Assaad, Sami (Sami)"
<dev-bounces@dpdk.org<mailto:dev-bounces@dpdk.org> on behalf of sami.assaad@alcatel-lucent.com<mailto:sami.assaad@alcatel-lucent.com>> wrote:
>Hello,
>
>I want to build a DPDK app that is able to port-mirror all ingress
>traffic from two 10G interfaces.
>
>1. Is it possible in port-mirroring traffic consisting of 450byte
>packets at 20G without losing more than 5% of traffic?
>
>2. Would you have any performance results due to packet copying?
Do you need to copy the packet if you increment the reference count you
can send the packet to both ports without having to copy the packet.
>
>3. Would you have any port mirroring DPDK sample code?
DPDK does not have port mirroring example, but you could grab the l2fwd or
l3fwd and modify it to do what you want.
>
>Thanks in advance.
>
>Best Regards,
>Sami Assaad.
next prev parent reply other threads:[~2015-07-09 20:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 20:17 Wiles, Keith
2015-07-09 20:27 ` Matt Laswell
2015-07-09 20:30 ` Assaad, Sami (Sami) [this message]
2015-07-10 13:46 ` Sanford, Robert
2015-07-10 13:47 ` Bruce Richardson
2015-07-10 14:21 ` Assaad, Sami (Sami)
2015-07-10 14:36 ` Bruce Richardson
-- strict thread matches above, loose matches on Subject: below --
2015-07-09 17:26 Assaad, Sami (Sami)
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