Lorenzo Bianconi wrote: > From: Eelco Chaudron <echaudro@xxxxxxxxxx> > > This change adds support for tail growing and shrinking for XDP multi-buff. > > When called on a multi-buffer packet with a grow request, it will always > work on the last fragment of the packet. So the maximum grow size is the > last fragments tailroom, i.e. no new buffer will be allocated. > > When shrinking, it will work from the last fragment, all the way down to > the base buffer depending on the shrinking size. It's important to mention > that once you shrink down the fragment(s) are freed, so you can not grow > again to the original size. > > Co-developed-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx> > Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx> > Signed-off-by: Eelco Chaudron <echaudro@xxxxxxxxxx> > --- LGTM. Acked-by: John Fastabend <john.fastabend@xxxxxxxxx>
