On Wed, Jul 25, 2018 at 9:55 PM, Eric Dumazet <eric.duma...@gmail.com> wrote: > > > On 07/25/2018 06:40 AM, Yafang Shao wrote: > >> >> Because we want to know why packets were dropped. >> If that could be show in netstat, we could easily find that it is >> dropped due to ofo prune. > > > We have a counter already for these events : LINUX_MIB_OFOPRUNED > > You want to add another counter tracking number of _skbs_, > which has no precise value for user, > given each skb can contain a variable number of _packets_. >
Got it. But with LINUX_MIB_OFOPRUNED, we only know tcp_prune_ofo_queue is called, but have no idea how many skbs are dropped. Thanks Yafang
