> On Mar 16, 2017, at 11:28 AM, Mike Shang <[email protected]> wrote: > > Is it possible to construct mbuf manually instead getting one from > mempool ? I've got a situation that needs to handle a relatively small > number of jumbo frames, we keep a mempool of objects of regular size and > wanted to construct mbuf ourselves for jumbo frames as one segment using > rte_malloc. I have searched the dpdk source code a bit but can't find such > use case. Is it doable with dpdk ? Or it's recommended to keep a separate > mempool for objects of larger size ?
You could try to construct your own mbuf, but when the system attempts to free the mbuf you would need to build a lot more then just the mbuf as the mempool pointer is hiding in the data/mbuf and it expects to point to a valid mempool. What I would do is just allocate a couple jumbo mbuf in a new mempool allocation and use those mbufs when you want to send jumbo frames. Trying to create a special mbuf is not going to super simple, just create a new mempool with N number of mbufs. > > Thanks, > Mike Regards, Keith
