On 9/7/20 12:02 PM, Jesper Dangaard Brouer wrote: > >> ok, is there any alignment requirement? can frame_sz be number of 32-bit >> words? I believe bit shifts are cheap. > > No that is not possible, because some drivers and generic-XDP have a > fully dynamic frame_sz. > frame_sz represents allocated memory right? What is the real range that needs to be supported for frame_sz? Surely there is some upper limit, and I thought it was 64kB. Allocated memory will not be on an odd number, so fair to assume at a minimum it is a multiple of 2. correct? At a minimum we should be able to shift frame_sz by 1 which now covers 64kB in a u16.
