2014-10-24 16:10, Ouyang Changchun: > To remove the dependency of RTE_MBUF_REFCNT for vhost zero copy, > the mbuf need introduce EXTERNAL_MBUF(in ol_flags) to indicate it > attaches to an external buffer, say, from guest space. And don't > free the external buffer when freeing the mbuf itself in host, in > addition, RX function in PMD need make sure not overwrite this flag > when filling ol_flags from descriptors to mbuf.
So you are replacing refcnt by something else which requires special handling in drivers. I feel this is not the right design. Why do you want to remove refcnt dependency? -- Thomas
