Big Thanks! Sami.
From: Matt Laswell [mailto:lasw...@infiniteio.com] Sent: Thursday, July 09, 2015 4:28 PM To: Wiles, Keith Cc: Assaad, Sami (Sami); dev at 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 at intel.com<mailto:keith.wiles at intel.com>> wrote: On 7/9/15, 12:26 PM, "dev on behalf of Assaad, Sami (Sami)" <dev-bounces at dpdk.org<mailto:dev-bounces at dpdk.org> on behalf of sami.assaad at alcatel-lucent.com<mailto:sami.assaad at 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.
