On Wed, 2016-05-04 at 12:50 -0400, David Miller wrote: > From: Eric Dumazet <eric.duma...@gmail.com> > Date: Wed, 04 May 2016 07:27:06 -0700 > > > kernel was fine, and most user land apps were fine as well. > > Userland should really not have to deal with garbage like this. > > And because it quietly works just fine on x86-64, nothing makes > sure that applications will universally get this right anyways. > > Better to align things properly and magically all of these issues > simply disappear.
Sure, but in practice we end up consuming 16 bytes (instead of 12) per u64 attribute, only on some arches. 33 % space overhead. So maybe some dumps will abort on those arches, while on x86 the size of skb might be below some magic limit. I guess this is fine, we do not break ABI in any way.
