From: Eric Dumazet <eduma...@google.com> Date: Tue, 24 Sep 2019 08:01:13 -0700
> SO_PRIORITY socket option requests TCP egress packets > to contain a user provided value. > > TCP manages to send most packets with the requested values, > notably for TCP_ESTABLISHED state, but fails to do so for > few packets. > > These packets are control packets sent on behalf > of SYN_RECV or TIME_WAIT states. > > Note that to test this with packetdrill, it is a bit > of a hassle, since packetdrill can not verify priority > of egress packets, other than indirect observations, > using for example sch_prio on its tunnel device. > > The bad skb priorities cause problems for GCP, > as this field is one of the keys used in routing. Series applied, thanks Eric.
