From: Paolo Abeni <pab...@redhat.com> Date: Wed, 13 Apr 2016 10:52:20 +0200
> 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 <pab...@redhat.com> Ok this seems reasonable, applied, thanks. I guess most applications use tuntap by having two threads, one for transmit and one for receive processing?
