On Thu, 28 May 2015 17:15:42 +0530
Padam Jeet Singh <padam.singh at inventum.net> wrote:
> Hello,
>
> Is there a function in DPDK to completely clone a pkt_mbuf including the
> segments?
>
> I am trying to build a packet mirroring application which sends packet out
> through two separate interfaces, but the packet payload needs to be altered
> before send.
>
> Thanks,
> Padam
>
>
Isn't this what you want?
/**
* Creates a "clone" of the given packet mbuf.
*
* Walks through all segments of the given packet mbuf, and for each of them:
* - Creates a new packet mbuf from the given pool.
* - Attaches newly created mbuf to the segment.
* Then updates pkt_len and nb_segs of the "clone" packet mbuf to match values
* from the original packet mbuf.
*
* @param md
* The packet mbuf to be cloned.
* @param mp
* The mempool from which the "clone" mbufs are allocated.
* @return
* - The pointer to the new "clone" mbuf on success.
* - NULL if allocation fails.
*/
static inline struct rte_mbuf *rte_pktmbuf_clone(struct rte_mbuf *md,
struct rte_mempool *mp)
