On 5/3/2016 8:42 AM, Yuanhan Liu wrote: > Both current kernel virtio driver and DPDK virtio driver use at least > 2 desc buffer for Tx: the first for storing the header, and the others > for storing the data. > > Therefore, we could fetch the first data desc buf before the main loop, > and do the copy first before the check of "are we done yet?". This > could save one check for small packets, that just have one data desc > buffer and need one mbuf to store it. > > Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
Acked-by: Huawei Xie <huawei.xie at intel.com>
