From: Eric Dumazet <eric.duma...@gmail.com> Date: Tue, 29 Aug 2017 15:16:01 -0700
> From: Eric Dumazet <eduma...@google.com> > > Florian reported UDP xmit drops that could be root caused to the > too small neigh limit. > > Current limit is 64 KB, meaning that even a single UDP socket would hit > it, since its default sk_sndbuf comes from net.core.wmem_default > (~212992 bytes on 64bit arches). > > Once ARP/ND resolution is in progress, we should allow a little more > packets to be queued, at least for one producer. > > Once neigh arp_queue is filled, a rogue socket should hit its sk_sndbuf > limit and either block in sendmsg() or return -EAGAIN. > > Signed-off-by: Eric Dumazet <eduma...@google.com> > Reported-by: Florian Fainelli <f.faine...@gmail.com> Applied, thanks for following up on this.
