On Fri, Jul 10, 2015 at 01:46:21PM +0000, Sanford, Robert wrote: > 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()? > Yep, that should work fine too.
/Bruce > -- > 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. > >> > >> >
