Cong Wang 07d79fc7d9 net_sched: add reverse binding for tc class ... TC filters when used as classifiers are bound to TC classes. However, there is a hidden difference when adding them in different orders: 1. If we add tc classes before its filters, everything is fine. Logically, the classes exist before we specify their ID's in filters, it is easy to bind them together, just as in the current code base. 2. If we add tc filters before the tc classes they bind, we have to do dynamic lookup in fast path. What's worse, this happens all the time not just once, because on fast path tcf_result is passed on stack, there is no way to propagate back to the one in tc filters. This hidden difference hurts performance silently if we have many tc classes in hierarchy. This patch intends to close this gap by doing the reverse binding when we create a new class, in this case we can actually search all the filters in its parent, match and fixup by classid. And because tcf_result is specific to each type of tc filter, we have to introduce a new ops for each filter to tell how to bind the class. Note, we still can NOT totally get rid of those class lookup in ->enqueue() because cgroup and flow filters have no way to determine the classid at setup time, they still have to go through dynamic lookup. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-08-31 11:40:52 -07:00
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act_api.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_bpf.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_connmark.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_csum.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_gact.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_ife.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_ipt.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_meta_mark.c	Support to encoding decoding skb mark on IFE action	2016-03-01 17:15:23 -05:00
act_meta_skbprio.c	Support to encoding decoding skb prio on IFE action	2016-03-01 17:15:23 -05:00
act_meta_skbtcindex.c	net sched ife action: Introduce skb tcindex metadata encap decap	2016-09-19 21:55:28 -04:00
act_mirred.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_nat.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_pedit.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_police.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_sample.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_simple.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_skbedit.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_skbmod.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_tunnel_key.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
act_vlan.c	net/sched: Change act_api and act_xxx modules to use IDR	2017-08-30 14:38:51 -07:00
cls_api.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
cls_basic.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_bpf.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_cgroup.c	net_sched: use void pointer for filter handle	2017-08-07 14:12:17 -07:00
cls_flow.c	net_sched: use void pointer for filter handle	2017-08-07 14:12:17 -07:00
cls_flower.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_fw.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_matchall.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_route.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_rsvp6.c
cls_rsvp.c
cls_rsvp.h	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_tcindex.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
cls_u32.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
em_canid.c	net: sched: remove tcf_proto from ematch calls	2014-10-06 18:02:32 -04:00
em_cmp.c
em_ipset.c	netfilter: x_tables: move hook state into xt_action_param structure	2016-11-03 10:56:21 +01:00
em_meta.c	net: convert sock.sk_refcnt from atomic_t to refcount_t	2017-07-01 07:39:08 -07:00
em_nbyte.c	net: sched: remove tcf_proto from ematch calls	2014-10-06 18:02:32 -04:00
em_text.c	net: Remove state argument from skb_find_text()	2015-02-22 15:59:54 -05:00
em_u32.c
ematch.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
Kconfig	net: sched: select cls when cls_act is enabled	2017-06-05 10:56:36 -04:00
Makefile	net/sched: Introduce sample tc action	2017-01-24 13:44:28 -05:00
sch_api.c	net_sched: add reverse binding for tc class	2017-08-31 11:40:52 -07:00
sch_atm.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_blackhole.c	net_sched: drop packets after root qdisc lock is released	2016-06-25 12:19:35 -04:00
sch_cbq.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_choke.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
sch_codel.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
sch_drr.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_dsmark.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_fifo.c	sched: don't use skb queue helpers	2016-09-19 01:47:18 -04:00
sch_fq_codel.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_fq.c	mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic	2017-07-12 16:26:03 -07:00
sch_generic.c	qdisc: add tracepoint qdisc:qdisc_dequeue for dequeued SKBs	2017-08-16 14:10:10 -07:00
sch_gred.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
sch_hfsc.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_hhf.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
sch_htb.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_ingress.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_mq.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_mqprio.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_multiq.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_netem.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_pie.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
sch_plug.c	net_sched: drop packets after root qdisc lock is released	2016-06-25 12:19:35 -04:00
sch_prio.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_qfq.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_red.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_sfb.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_sfq.c	sched: sfq: drop packets after root qdisc lock is released	2017-08-28 15:51:42 -07:00
sch_tbf.c	net_sched: remove tc class reference counting	2017-08-25 17:19:10 -07:00
sch_teql.c	net: make ndo_get_stats64 a void function	2017-01-08 17:51:44 -05:00