Cross Reference: /external/iproute2/tc/

Kernel code and interface.
--------------------------

* Compile time switches

There is only one, but very important, compile time switch.
It is not settable by "make config", but should be selected
manually and after a bit of thinking in <include/net/pkt_sched.h>

PSCHED_CLOCK_SOURCE can take three values:

	PSCHED_GETTIMEOFDAY
	PSCHED_JIFFIES
	PSCHED_CPU


 PSCHED_GETTIMEOFDAY

Default setting is the most conservative PSCHED_GETTIMEOFDAY.
It is very slow both because of weird slowness of do_gettimeofday()
and because it forces code to use unnatural "timeval" format,
where microseconds and seconds fields are separate.
Besides that, it will misbehave, when delays exceed 2 seconds
(f.e. very slow links or classes bounded to small slice of bandwidth)
To resume: as only you will get it working, select correct clock
source and forget about PSCHED_GETTIMEOFDAY forever.


 PSCHED_JIFFIES

Clock is derived from jiffies. On architectures with HZ=100
granularity of this clock is not enough to make reasonable
bindings to real time. However, taking into account Linux
architecture problems, which force us to use artificial
integrated clock in any case, this switch is not so bad
for schduling even on high speed networks, though policing
is not reliable.


 PSCHED_CPU

It is available only for alpha and pentiums with correct
CPU timestamp. It is the fastest way, use it when it is available,
but remember: not all pentiums have this facility, and
a lot of them have clock, broken by APM etc. etc.
Name	Date	Size
..	20-Dec-2016	4 KiB
.gitignore	20-Dec-2016	38
Android.mk	20-Dec-2016	739
e_bpf.c	20-Dec-2016	4.3 KiB
em_canid.c	20-Dec-2016	5.4 KiB
em_cmp.c	20-Dec-2016	4.6 KiB
em_ipset.c	20-Dec-2016	6.3 KiB
em_meta.c	20-Dec-2016	12.6 KiB
em_nbyte.c	20-Dec-2016	3.5 KiB
em_u32.c	20-Dec-2016	4 KiB
emp_ematch.l	20-Dec-2016	3.3 KiB
emp_ematch.y	20-Dec-2016	1.2 KiB
f_basic.c	20-Dec-2016	3.5 KiB
f_bpf.c	20-Dec-2016	5.5 KiB
f_cgroup.c	20-Dec-2016	2.6 KiB
f_flow.c	20-Dec-2016	8.5 KiB
f_flower.c	20-Dec-2016	12.8 KiB
f_fw.c	20-Dec-2016	3.8 KiB
f_route.c	20-Dec-2016	4.5 KiB
f_rsvp.c	20-Dec-2016	10.4 KiB
f_tcindex.c	20-Dec-2016	4.2 KiB
f_u32.c	20-Dec-2016	28 KiB
m_action.c	20-Dec-2016	13.9 KiB
m_bpf.c	20-Dec-2016	5.4 KiB
m_connmark.c	20-Dec-2016	3.5 KiB
m_csum.c	20-Dec-2016	5.2 KiB
m_ematch.c	20-Dec-2016	10.8 KiB
m_ematch.h	20-Dec-2016	2.1 KiB
m_estimator.c	20-Dec-2016	1.7 KiB
m_gact.c	20-Dec-2016	5.2 KiB
m_ipt.c	20-Dec-2016	12.8 KiB
m_mirred.c	20-Dec-2016	6.1 KiB
m_nat.c	20-Dec-2016	4 KiB
m_pedit.c	20-Dec-2016	11.5 KiB
m_pedit.h	20-Dec-2016	2 KiB
m_police.c	20-Dec-2016	9.1 KiB
m_simple.c	20-Dec-2016	5.2 KiB
m_skbedit.c	20-Dec-2016	4.9 KiB
m_vlan.c	20-Dec-2016	5 KiB
m_xt.c	20-Dec-2016	8.4 KiB
m_xt_old.c	20-Dec-2016	9.5 KiB
Makefile	20-Dec-2016	4 KiB
MODULE_LICENSE_GPL	20-Dec-2016	0
NOTICE	20-Dec-2016	17.6 KiB
p_icmp.c	20-Dec-2016	1.1 KiB
p_ip.c	20-Dec-2016	3.4 KiB
p_tcp.c	20-Dec-2016	808
p_udp.c	20-Dec-2016	809
q_atm.c	20-Dec-2016	5.5 KiB
q_cbq.c	20-Dec-2016	15 KiB
q_choke.c	20-Dec-2016	5.6 KiB
q_clsact.c	20-Dec-2016	630
q_codel.c	20-Dec-2016	6.5 KiB
q_drr.c	20-Dec-2016	2.5 KiB
q_dsmark.c	20-Dec-2016	3.7 KiB
q_fifo.c	20-Dec-2016	2.2 KiB
q_fq.c	20-Dec-2016	9.7 KiB
q_fq_codel.c	20-Dec-2016	7.8 KiB
q_gred.c	20-Dec-2016	9.1 KiB
q_hfsc.c	20-Dec-2016	8.6 KiB
q_hhf.c	20-Dec-2016	5.5 KiB
q_htb.c	20-Dec-2016	10.5 KiB
q_ingress.c	20-Dec-2016	1.1 KiB
q_mqprio.c	20-Dec-2016	2.9 KiB
q_multiq.c	20-Dec-2016	1.9 KiB
q_netem.c	20-Dec-2016	16.4 KiB
q_pie.c	20-Dec-2016	5.7 KiB
q_prio.c	20-Dec-2016	2.8 KiB
q_qfq.c	20-Dec-2016	2.5 KiB
q_red.c	20-Dec-2016	5.9 KiB
q_rr.c	20-Dec-2016	2.8 KiB
q_sfb.c	20-Dec-2016	4.9 KiB
q_sfq.c	20-Dec-2016	7.1 KiB
q_tbf.c	20-Dec-2016	8.9 KiB
README.last	20-Dec-2016	1.5 KiB
static-syms.c	20-Dec-2016	248
tc.c	20-Dec-2016	8.4 KiB
tc_bpf.c	20-Dec-2016	41 KiB
tc_bpf.h	20-Dec-2016	1.9 KiB
tc_cbq.c	20-Dec-2016	1.5 KiB
tc_cbq.h	20-Dec-2016	283
tc_class.c	20-Dec-2016	11.9 KiB
tc_common.h	20-Dec-2016	1 KiB
tc_core.c	20-Dec-2016	5 KiB
tc_core.h	20-Dec-2016	888
tc_estimator.c	20-Dec-2016	1.1 KiB
tc_exec.c	20-Dec-2016	2.1 KiB
tc_filter.c	20-Dec-2016	10.5 KiB
tc_monitor.c	20-Dec-2016	2.5 KiB
tc_qdisc.c	20-Dec-2016	9.5 KiB
tc_red.c	20-Dec-2016	1.8 KiB
tc_red.h	20-Dec-2016	289
tc_stab.c	20-Dec-2016	3.7 KiB
tc_util.c	20-Dec-2016	12.5 KiB
tc_util.h	20-Dec-2016	4 KiB