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7298de9cd7
linux/net/sched
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Toke Høiland-Jørgensen 7298de9cd7 sch_cake: Add ingress mode 
The ingress mode is meant to be enabled when CAKE runs downlink of the
actual bottleneck (such as on an IFB device). The mode changes the shaper
to also account dropped packets to the shaped rate, as these have already
traversed the bottleneck.

Enabling ingress mode will also tune the AQM to always keep at least two
packets queued *for each flow*. This is done by scaling the minimum queue
occupancy level that will disable the AQM by the number of active bulk
flows. The rationale for this is that retransmits are more expensive in
ingress mode, since dropped packets have to traverse the bottleneck again
when they are retransmitted; thus, being more lenient and keeping a minimum
number of packets queued will improve throughput in cases where the number
of active flows are so large that they saturate the bottleneck even at
their minimum window size.

This commit also adds a separate switch to enable ingress mode rate
autoscaling. If enabled, the autoscaling code will observe the actual
traffic rate and adjust the shaper rate to match it. This can help avoid
latency increases in the case where the actual bottleneck rate decreases
below the shaped rate. The scaling filters out spikes by an EWMA filter.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-10 20:06:34 -07:00
..
act_api.c net: sched: Fix warnings from xchg() on RCU'd cookie pointer. 2018-07-08 17:02:59 +09:00
act_bpf.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_connmark.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_csum.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_gact.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_ife.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_ipt.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_meta_mark.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_meta_skbprio.c net sched actions: change IFE modules alias names 2017-10-12 22:13:20 -07:00
act_meta_skbtcindex.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_mirred.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_nat.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_pedit.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_police.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_sample.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_simple.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_skbedit.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_skbmod.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_tunnel_key.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
act_vlan.c net: sched: atomically check-allocate action 2018-07-08 12:42:29 +09:00
cls_api.c net: sched: change action API to use array of pointers to actions 2018-07-08 12:42:29 +09:00
cls_basic.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_bpf.c net: sched: cls_bpf: implement offload tcf_proto_op 2018-06-26 23:21:33 +09:00
cls_cgroup.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_flow.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_flower.c net/sched: flower: Add supprt for matching on QinQ vlan headers 2018-07-07 20:51:53 +09:00
cls_fw.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_matchall.c net: sched: cls_matchall: implement offload tcf_proto_op 2018-06-26 23:21:33 +09:00
cls_route.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_rsvp6.c
cls_rsvp.c
cls_rsvp.h net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_tcindex.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_u32.c net: sched: cls_u32: implement offload tcf_proto_op 2018-06-26 23:21:33 +09:00
em_canid.c
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_ipt.c net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
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: em_nbyte: don't add the data offset twice 2018-01-24 14:52:40 -05:00
em_text.c net: Remove state argument from skb_find_text() 2015-02-22 15:59:54 -05:00
em_u32.c
ematch.c net: sched: ematch: obtain net pointer from blocks 2017-10-16 21:00:40 +01:00
Kconfig sched: Add Common Applications Kept Enhanced (cake) qdisc 2018-07-10 20:06:34 -07:00
Makefile sched: Add Common Applications Kept Enhanced (cake) qdisc 2018-07-10 20:06:34 -07:00
sch_api.c net/sched: Allow creating a Qdisc watchdog with other clocks 2018-07-04 22:30:27 +09:00
sch_atm.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_blackhole.c net_sched: blackhole: tell upper qdisc about dropped packets 2018-06-17 08:42:33 +09:00
sch_cake.c sch_cake: Add ingress mode 2018-07-10 20:06:34 -07:00
sch_cbq.c net: sch: sch_cbq: add extack support 2017-12-21 12:32:51 -05:00
sch_cbs.c net: sch: sch_cbs: add extack support 2017-12-21 12:32:51 -05:00
sch_choke.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_codel.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_drr.c net: sch: sch_drr: add extack support 2017-12-21 12:32:51 -05:00
sch_dsmark.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_etf.c net/sched: Make etf report drops on error_queue 2018-07-04 22:30:28 +09:00
sch_fifo.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_fq_codel.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
sch_fq.c net_sched: fq: take care of throttled flows before reuse 2018-05-02 16:37:38 -04:00
sch_generic.c net: remove bypassed check in sch_direct_xmit() 2018-05-31 13:26:19 -04:00
sch_gred.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_hfsc.c net_sched: remove a bogus warning in hfsc 2018-06-23 10:58:46 +09:00
sch_hhf.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
sch_htb.c net_sched: remove unused htb drop_list 2018-06-24 16:42:46 +09:00
sch_ingress.c net: sched: allow ingress and clsact qdiscs to share filter blocks 2018-01-17 14:53:57 -05:00
sch_mq.c net: sched: mq: request stats from offloads 2018-05-29 09:49:16 -04:00
sch_mqprio.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_multiq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_netem.c netem: slotting with non-uniform distribution 2018-06-28 22:06:24 +09:00
sch_pie.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_plug.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_prio.c net: sch: prio: Add offload ability for grafting a child 2018-02-28 12:06:01 -05:00
sch_qfq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_red.c net: sched: red: avoid hashing NULL child 2018-05-18 13:52:32 -04:00
sch_sfb.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_sfq.c net: sch: api: add extack support in tcf_block_get 2017-12-21 12:32:51 -05:00
sch_tbf.c net: sched: red: avoid hashing NULL child 2018-05-18 13:52:32 -04:00
sch_teql.c net: sched: sch: add extack for init callback 2017-12-21 12:32:50 -05:00