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0330f49ea0
mirror_iproute2/tc
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Stephen Hemminger ae810982cc remove useless return statement 
Get rid of:
void foo() {
...
	return;
}
2016-09-01 08:44:20 -07:00
..
.gitignore Add ignore files to make using git easier 2006-08-08 12:04:38 -07:00
e_bpf.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
em_canid.c Replace malloc && memset by calloc 2016-07-20 12:05:24 -07:00
em_cmp.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
em_ipset.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
em_meta.c tc: ematch: Ignore all-zero mask value when printing filters 2016-07-20 12:20:13 -07:00
em_nbyte.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
em_u32.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
emp_ematch.l fix build issues with flex ver 2.5 2010-04-22 15:27:42 -07:00
emp_ematch.y tc: remove extra whitespace 2015-10-23 15:43:28 -07:00
f_basic.c tc: code cleanup 2016-03-21 11:48:36 -07:00
f_bpf.c f_bpf: fix filling of handle when no further arg is provided 2016-05-23 16:14:18 -07:00
f_cgroup.c tc: code cleanup 2016-03-21 11:48:36 -07:00
f_flow.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
f_flower.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
f_fw.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
f_matchall.c tc: Add support for the matchall traffic classifier. 2016-09-01 08:37:01 -07:00
f_route.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
f_rsvp.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
f_tcindex.c tc classifiers: Modernize tcindex classifier 2016-08-22 10:08:00 -07:00
f_u32.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
m_action.c tc: fix a misleading failure 2016-08-09 11:18:14 -07:00
m_bpf.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_connmark.c tc: use action_a2n() everywhere 2016-07-25 08:10:43 -07:00
m_csum.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_ematch.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
m_ematch.h include needed files 2012-12-23 11:49:06 -08:00
m_estimator.c tc: code cleanup 2016-03-21 11:48:36 -07:00
m_gact.c tc/m_gact: Fix action_a2n() return code check 2016-08-08 08:52:47 -07:00
m_ife.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_ipt.c Replace malloc && memset by calloc 2016-07-20 12:05:24 -07:00
m_mirred.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_nat.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_pedit.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_pedit.h Remove trailing whitespace 2006-12-05 10:10:22 -08:00
m_police.c police: improve usage message 2016-08-29 10:54:40 -07:00
m_simple.c tc: use action_a2n() everywhere 2016-07-25 08:10:43 -07:00
m_skbedit.c Merge branch 'master' into net-next 2016-07-25 08:21:00 -07:00
m_vlan.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
m_xt_old.c tc: code cleanup 2016-03-21 11:48:36 -07:00
m_xt.c m_xt: whitespace cleanup 2016-06-14 14:40:53 -07:00
Makefile tc: Add support for the matchall traffic classifier. 2016-09-01 08:37:01 -07:00
p_icmp.c tc: code cleanup 2016-03-21 11:48:36 -07:00
p_ip.c tc/p_ip.c: Minor coding style cleanup 2016-03-27 10:34:22 -07:00
p_tcp.c tc: code cleanup 2016-03-21 11:48:36 -07:00
p_udp.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_atm.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_cbq.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_choke.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_clsact.c ingress, clsact: don't add TCA_OPTIONS to nl msg 2016-05-16 11:20:50 -07:00
q_codel.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_drr.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_dsmark.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_fifo.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_fq_codel.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_fq.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_gred.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_hfsc.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_hhf.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_htb.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_ingress.c ingress, clsact: don't add TCA_OPTIONS to nl msg 2016-05-16 11:20:50 -07:00
q_mqprio.c ip: make local functions static 2013-02-12 11:38:35 -08:00
q_multiq.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_netem.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_pie.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_prio.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_qfq.c qfq: fix parse_opt dead code 2015-10-27 15:46:20 +09:00
q_red.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_rr.c tc: code cleanup 2016-03-21 11:48:36 -07:00
q_sfb.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_sfq.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
q_tbf.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
README.last tc: remove extra whitespace 2015-10-23 15:43:28 -07:00
static-syms.c Fix build when shared libraries are disabled 2013-03-13 08:29:59 -07:00
tc_bpf.c Replace malloc && memset by calloc 2016-07-20 12:05:24 -07:00
tc_bpf.h tc, bpf: further improve error reporting 2016-04-11 21:53:58 +00:00
tc_cbq.c tc: code cleanup 2016-03-21 11:48:36 -07:00
tc_cbq.h (Logical change 1.3) 2004-04-15 20:56:59 +00:00
tc_class.c remove useless return statement 2016-09-01 08:44:20 -07:00
tc_common.h tc: built-in eBPF exec proxy 2015-04-27 16:39:23 -07:00
tc_core.c scrub out whitespace issues 2016-03-27 10:50:14 -07:00
tc_core.h htb: support 64bit rates 2013-11-22 17:36:18 -08:00
tc_estimator.c tc: code cleanup 2016-03-21 11:48:36 -07:00
tc_exec.c Replace malloc && memset by calloc 2016-07-20 12:05:24 -07:00
tc_filter.c Use C99 style initializers everywhere 2016-07-20 12:05:24 -07:00
tc_monitor.c tc: code cleanup 2016-03-21 11:48:36 -07:00
tc_qdisc.c tc: Fix for missing estimator initialization 2016-08-06 10:14:06 -07:00
tc_red.c tc: code cleanup 2016-03-21 11:48:36 -07:00
tc_red.h (Logical change 1.3) 2004-04-15 20:56:59 +00:00
tc_stab.c remove useless return statement 2016-09-01 08:44:20 -07:00
tc_util.c tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
tc_util.h tc: util: No need for action_n2a() to be reentrant 2016-07-25 08:10:43 -07:00
tc.c Replace malloc && memset by calloc 2016-07-20 12:05:24 -07:00

README.last 

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.