This patchset fixes the packet stuck problem mentioned in [1].
Patch 1: Add STATE_MISSED flag to fix packet stuck problem.
Patch 2: Fix a tx_action rescheduling problem after STATE_MISSED
flag is added in patch 1.
Patch 3: Fix the significantly higher CPU consumption problem when
multiple threads are competing on a saturated outgoing
device.
V7: Fix netif_tx_wake_queue() data race noted by Jakub.
V6: Some performance optimization in patch 1 suggested by Jakub
and drop NET_XMIT_DROP checking in patch 3.
V5: add patch 3 to fix the problem reported by Michal Kubecek.
V4: Change STATE_NEED_RESCHEDULE to STATE_MISSED and add patch 2.
[1]. https://lkml.org/lkml/2019/10/9/42
Yunsheng Lin (3):
net: sched: fix packet stuck problem for lockless qdisc
net: sched: fix endless tx action reschedule during deactivation
net: sched: fix tx action reschedule issue with stopped queue
include/net/pkt_sched.h | 7 +------
include/net/sch_generic.h | 35 ++++++++++++++++++++++++++++++++-
net/core/dev.c | 29 ++++++++++++++++++++++-----
net/sched/sch_generic.c | 50 +++++++++++++++++++++++++++++++++++++++++++++--
4 files changed, 107 insertions(+), 14 deletions(-)
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2.7.4
