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> wrote: > > > On 7/9/15, 12:26 PM, "dev on behalf of Assaad, Sami (Sami)" > <dev-bounces at dpdk.org on behalf of 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. > >
