On Mon, Aug 02, 2021 at 08:56:29PM +0800, Tianyu Lan wrote: > Both second and third are HV_GPADL_RING type. One is send ring and the > other is receive ring. The driver keeps the order to allocate rx and > tx buffer. You are right this is not robust and will add a mutex to keep > the order. Or you introduce fixed indexes for the RX and TX buffers?