On Fri, Jan 13, 2017 at 02:09:00PM +0100, Simon Horman wrote: > From: Masaru Nagai <masaru.nagai.vx@xxxxxxxxxxx> > > Due to alignment requirements of the hardware transmissions are split into > two DMA descriptors, a small padding descriptor of 0 - 3 bytes in length > followed by a descriptor for rest of the packet. > > In the case of IP packets the first descriptor will never be zero due to > the way that the stack aligns buffers for IP packets. However, for non-IP > packets it may be zero. ... Apologies, I forgot to include v2 in the subject prefix.
