From: Eric Dumazet <eduma...@google.com> Date: Fri, 22 Jun 2018 16:27:47 -0700
> struct net are effectively allocated from order-1 pages on x86, > with one object per slab, meaning that the 13 low order bits > of their addresses are zero. > > Once shifted by L1_CACHE_SHIFT, this leaves 7 zero-bits, > meaning that net_hash_mix() does not help spreading > objects on various hash tables. > > For example, TCP listen table has 32 buckets, meaning that > all netns use the same bucket for port 80 or port 443. > > Signed-off-by: Eric Dumazet <eduma...@google.com> > Reported-by: Maciej Żenczykowski <m...@google.com> Good catch, applied, thanks Eric.
