Currently, all netlink protocol handlers for updating rules, actions and qdiscs are protected with single global rtnl lock which removes any possibility for parallelism. This patch set is a first step to remove rtnl lock dependency from TC rules update path. It updates act API to use atomic operations, rcu and spinlocks for fine-grained locking. It also extend API with functions that are needed to update existing actions for parallel execution. Outline of changes: - Change tc action to use atomic reference and bind counters, rcu mechanism for cookie update. - Extend action ops API with 'delete' function and 'unlocked' flag. - Change action API to work with actions in lockless manner based on primitives implemented in previous patches. - Extend action API with new functions necessary to implement unlocked actions. Vlad Buslov (14): net: sched: use rcu for action cookie update net: sched: change type of reference and bind counters net: sched: add 'delete' function to action ops net: sched: implement unlocked action init API net: sched: always take reference to action net: sched: implement reference counted action release net: sched: use reference counting action init net: sched: account for temporary action reference net: sched: don't release reference on action overwrite net: sched: extend act API for lockless actions net: core: add new/replace rate estimator lock parameter net: sched: retry action check-insert on concurrent modification net: sched: use unique idr insert function in unlocked actions net: sched: implement delete for all actions include/net/act_api.h | 16 ++- include/net/gen_stats.h | 2 + include/net/pkt_cls.h | 1 + net/core/gen_estimator.c | 58 ++++++--- net/netfilter/xt_RATEEST.c | 2 +- net/sched/act_api.c | 298 ++++++++++++++++++++++++++++++++------------- net/sched/act_bpf.c | 33 +++-- net/sched/act_connmark.c | 29 +++-- net/sched/act_csum.c | 33 +++-- net/sched/act_gact.c | 30 +++-- net/sched/act_ife.c | 37 ++++-- net/sched/act_ipt.c | 41 +++++-- net/sched/act_mirred.c | 32 +++-- net/sched/act_nat.c | 29 +++-- net/sched/act_pedit.c | 30 +++-- net/sched/act_police.c | 35 ++++-- net/sched/act_sample.c | 33 +++-- net/sched/act_simple.c | 31 +++-- net/sched/act_skbedit.c | 30 +++-- net/sched/act_skbmod.c | 33 +++-- net/sched/act_tunnel_key.c | 34 ++++-- net/sched/act_vlan.c | 34 ++++-- net/sched/cls_api.c | 6 +- net/sched/sch_api.c | 2 + net/sched/sch_cbq.c | 4 +- net/sched/sch_drr.c | 4 +- net/sched/sch_hfsc.c | 4 +- net/sched/sch_htb.c | 4 +- net/sched/sch_qfq.c | 4 +- 29 files changed, 673 insertions(+), 256 deletions(-) -- 2.7.5 -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
