Commits
Paolo Abeni committed 608b9977260
tun: use per cpu variables for stats accounting Currently the tun device accounting uses dev->stats without applying any kind of protection, regardless that accounting happens in preemptible process context. This patch move the tun stats to a per cpu data structure, and protect the updates with u64_stats_update_begin()/u64_stats_update_end() or this_cpu_inc according to the stat type. The per cpu stats are aggregated by the newly added ndo_get_stats64 ops. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>