Silly questions: Why use rte_pktmbuf_clone()? Assuming that one is not going to modify the mbuf at all, why not just increment the reference count with rte_mbuf_refcnt_update()?
-- Thanks, Robert >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. >> >>