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Toke Høiland-Jørgensen 714444c0cb Add support for CAKE qdisc 
sch_cake is intended to squeeze the most bandwidth and latency out of even
the slowest ISP links and routers, while presenting an API simple enough
that even an ISP can configure it.

Example of use on a cable ISP uplink:

tc qdisc add dev eth0 cake bandwidth 20Mbit nat docsis ack-filter

To shape a cable download link (ifb and tc-mirred setup elided)

tc qdisc add dev ifb0 cake bandwidth 200mbit nat docsis ingress wash besteffort

Cake is filled with:

* A hybrid Codel/Blue AQM algorithm, "Cobalt", tied to an FQ_Codel
  derived Flow Queuing system, which autoconfigures based on the bandwidth.
* A novel "triple-isolate" mode (the default) which balances per-host
  and per-flow FQ even through NAT.
* An deficit based shaper, that can also be used in an unlimited mode.
* 8 way set associative hashing to reduce flow collisions to a minimum.
* A reasonable interpretation of various diffserv latency/loss tradeoffs.
* Support for zeroing diffserv markings for entering and exiting traffic.
* Support for interacting well with Docsis 3.0 shaper framing.
* Support for DSL framing types and shapers.
* Support for ack filtering.
* Extensive statistics for measuring, loss, ecn markings, latency variation.

Various versions baking have been available as an out of tree build for
kernel versions going back to 3.10, as the embedded router world has been
running a few years behind mainline Linux. A stable version has been
generally available on lede-17.01 and later.

sch_cake replaces a combination of iptables, tc filter, htb and fq_codel
in the sqm-scripts, with sane defaults and vastly simpler configuration.

Cake's principal author is Jonathan Morton, with contributions from
Kevin Darbyshire-Bryant, Toke Høiland-Jørgensen, Sebastian Moeller,
Ryan Mounce, Tony Ambardar, Dean Scarff, Nils Andreas Svee, Dave Täht,
and Loganaden Velvindron.

Testing from Pete Heist, Georgios Amanakis, and the many other members of
the cake@lists.bufferbloat.net mailing list.

Signed-off-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: David Ahern <dsahern@gmail.com>
 		2018-07-19 09:23:46 -07:00
..
.gitignore Add ignore files to make using git easier 2006-08-08 12:04:38 -07:00
Makefile Add support for CAKE qdisc 2018-07-19 09:23:46 -07:00
e_bpf.c bpf: make tc's bpf loader generic and move into lib 2016-11-29 12:35:32 -08:00
em_canid.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
em_cmp.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
em_ipset.c Convert the obvious cases to strlcpy() 2017-09-01 12:10:54 -07:00
em_ipt.c tc: Fix compilation error with old iptables 2018-03-27 06:38:52 -07:00
em_meta.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
em_nbyte.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
em_u32.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
emp_ematch.l tc/lexer: let quotes actually start strings 2018-01-24 08:49:10 -08:00
emp_ematch.y tc: remove extra whitespace 2015-10-23 15:43:28 -07:00
f_basic.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
f_bpf.c f_bpf: communicate ifindex for eBPF offload 2017-11-26 11:57:57 -08:00
f_cgroup.c tc actions: Improved batching and time filtered dumping 2017-08-04 13:16:51 -07:00
f_flow.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
f_flower.c tc: flower: Add support for QinQ 2018-07-15 13:03:50 -07:00
f_fw.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
f_matchall.c tc: jsonify matchall filter 2017-11-26 12:20:51 -08:00
f_route.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
f_rsvp.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
f_tcindex.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
f_u32.c ip: Use single variable to represent -pretty 2018-02-16 08:13:36 -08:00
m_action.c tc: Correct json output for actions 2018-04-04 16:41:36 -07:00
m_bpf.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
m_connmark.c tc: jsonify connmark action 2018-04-08 10:52:32 -07:00
m_csum.c tc: add json support in csum action 2018-06-05 15:30:30 -07:00
m_ematch.c Merge branch 'iproute2-master' into iproute2-next 2018-04-02 10:47:34 -07:00
m_ematch.h tc: ematch: add parse_eopt_argv() method for providing ematches with argv parameters 2018-02-27 09:43:06 -08:00
m_estimator.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
m_gact.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
m_ife.c tc: add missing space symbol in ife output 2018-05-18 09:10:48 -07:00
m_ipt.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
m_mirred.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
m_nat.c tc: jsonify nat action 2018-06-20 10:20:34 -07:00
m_pedit.c Merge branch 'iproute2-master' into iproute2-next 2018-04-02 10:47:34 -07:00
m_pedit.h drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
m_police.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
m_sample.c tc: jsonify sample action 2018-04-01 08:44:31 -07:00
m_simple.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
m_skbedit.c net:sched: add action inheritdsfield to skbedit 2018-07-19 09:17:56 -07:00
m_skbmod.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
m_tunnel_key.c tc: m_tunnel_key: Add tunnel option support to act_tunnel_key 2018-07-06 09:10:05 -07:00
m_vlan.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
m_xt.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
m_xt_old.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
p_eth.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
p_icmp.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
p_ip.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
p_ip6.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
p_tcp.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
p_udp.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
q_atm.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_cake.c Add support for CAKE qdisc 2018-07-19 09:23:46 -07:00
q_cbq.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_cbs.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_choke.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_clsact.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
q_codel.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_drr.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_dsmark.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_etf.c tc: Add support for the ETF Qdisc 2018-07-11 17:50:10 -07:00
q_fifo.c tc: break long lines 2017-11-24 11:31:36 -08:00
q_fq.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_fq_codel.c tc: Add JSON output of fq_codel stats 2018-03-13 18:05:40 -07:00
q_gred.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_hfsc.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_hhf.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_htb.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_ingress.c ingress: Don't break JSON output 2018-04-25 11:08:39 -07:00
q_mqprio.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_multiq.c tc: B.W limits can now be specified in %. 2017-11-24 11:22:13 -08:00
q_netem.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_pie.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_prio.c tc: prio: JSON-ify prio output 2018-01-26 13:00:18 -08:00
q_qfq.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_red.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_rr.c tc: B.W limits can now be specified in %. 2017-11-24 11:22:13 -08:00
q_sfb.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
q_sfq.c tc: B.W limits can now be specified in %. 2017-11-24 11:22:13 -08:00
q_tbf.c treewide: Use addattr_nest()/addattr_nest_end() to handle nested attributes 2018-02-02 15:01:09 -08:00
static-syms.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
tc.c Merge branch 'iproute2-master' into iproute2-next 2018-04-02 10:47:34 -07:00
tc_cbq.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
tc_cbq.h SPDX license identifiers 2017-11-24 12:21:35 -08:00
tc_class.c Merge branch 'iproute2-master' into iproute2-next 2018-04-02 10:47:34 -07:00
tc_common.h tc: Add batchsize feature for filter and actions 2018-01-14 09:03:35 -08:00
tc_core.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
tc_core.h SPDX license identifiers 2017-11-24 12:21:35 -08:00
tc_estimator.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
tc_exec.c tc: replace magic constant 16 with #define 2017-11-24 11:19:18 -08:00
tc_filter.c utils: Introduce and use nodev() helper routine 2018-03-11 17:58:36 -07:00
tc_monitor.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
tc_qdisc.c utils: Introduce and use nodev() helper routine 2018-03-11 17:58:36 -07:00
tc_red.c tc: red: allow setting th_min and th_max to the same value 2018-01-19 12:35:23 -08:00
tc_red.h SPDX license identifiers 2017-11-24 12:21:35 -08:00
tc_stab.c drop unneeded include of syslog.h 2017-11-12 16:22:36 -08:00
tc_util.c Merge branch 'iproute2-master' into iproute2-next 2018-03-13 17:48:10 -07:00
tc_util.h tc: implement color output 2018-02-21 09:12:28 -08:00