ip link has quadratic behavior because store_nlmsg()
has a head list pointer and search the end of list.

Provides a head/tail to cut time.

Time with 128000 net devices, to do "ip link show dev xxx"

Before: 2m3.594s
After: 0m2.830s
Signed-off-by: Eric Dumazet <edumazet@google.com>

Reported-by: Andy Furniss <andyqos@ukfsn.org>
Signed-off-by: Jan Ceuleers <jan.ceuleers@computer.org>

<groff: tc-drr.8>:67: warning: tab character in unquoted macro argument
<groff: tc-drr.8>:69: warning: tab character in unquoted macro argument

*********************

Originally filed at: http://bugs.debian.org/674706Signed-off-by: Andreas Henriksson <andreas@fatal.se>

<groff: tc.8>:51: warning: total indent cannot be negative
<groff: tc.8>:57: warning: escape character ignored before `i'

*********************

Space at end of line removed

  General considerations

a) Manuals should usually only be left justified.  Use ".ad l"
as the first regular command.

b) Each sentence should begin on a new line.  The conventions
about the amount of space between sentences are different.  This
also makes a check on the number of space characters between
words easier.

c) Separate numbers from units with a (no-break) space.  A
no-break space can be code 0xA0, "\ " (\<space>), or "\~"
(groff).

d) Use macros "TS/TE" for tables with more than two columns.
Then use

'\" t

as the first line in the source to tell "man" to use the "tbl"
preprocessor.

e) Protect last period (full stop) in abbreviations with "\&",
if it is or might be (through new formatting of source) at the
end of line, if it is also not an end of sentence.

*********************

Originally filed at: http://bugs.debian.org/674704Signed-off-by: Andreas Henriksson <andreas@fatal.se>

Signed-off-by: Jan Ceuleers <jan.ceuleers@computer.org>

codel can take 'noecn' as an option. This also makes it consistent with the
manpage.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>

This patch adds the manpage for the CoDel (Controlled-Delay) AQM.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>

Adds support for parsing IPv6 addresses to the parameters local and
remote in the l2tp commands. Requires netlink attributes L2TP_ATTR_IP6_SADDR
and L2TP_ATTR_IP6_DADDR, added in a required kernel patch already submitted
to netdev.

Also enables printing of IPv6 addresses returned by the L2TP_CMD_TUNNEL_GET
request.
Signed-off-by: Chris Elston <celston@katalix.com>
Signed-off-by: James Chapman <jchapman@katalix.com>

Fair Queue Codel packet scheduler

Principles :

- Packets are classified (internal classifier or external) on flows.
- This is a Stochastic model (as we use a hash, several flows might
                              be hashed on same slot)
- Each flow has a CoDel managed queue.
- Flows are linked onto two (Round Robin) lists,
  so that new flows have priority on old ones.

- For a given flow, packets are not reordered (CoDel uses a FIFO)
- head drops only.
- ECN capability is on by default.
- Very low memory footprint (64 bytes per flow)

tc qdisc ... fq_codel [ limit PACKETS ] [ flows number ]
                      [ target TIME ] [ interval TIME ] [ noecn ]
                      [ quantum BYTES ]
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Dave Taht <dave.taht@bufferbloat.net>
Cc: Kathleen Nichols <nichols@pollere.com>
Cc: Van Jacobson <van@pollere.net>
Cc: Tom Herbert <therbert@google.com>
Cc: Matt Mathis <mattmathis@google.com>
Cc: Nandita Dukkipati <nanditad@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Changli Gao <xiaosuo@gmail.com>

An implementation of CoDel AQM, from Kathleen Nichols and Van Jacobson.

http://queue.acm.org/detail.cfm?id=2209336

This AQM main input is no longer queue size in bytes or packets, but the
delay packets stay in (FIFO) queue.

As we don't have infinite memory, we still can drop packets in enqueue()
in case of massive load, but mean of CoDel is to drop packets in
dequeue(), using a control law based on two simple parameters :

target : target sojourn time (default 5ms)
interval : width of moving time window (default 100ms)

Selected packets are dropped, unless ECN is enabled and packets can get
ECN mark instead.

Usage: tc qdisc ... codel [ limit PACKETS ] [ target TIME ]
                          [ interval TIME ] [ ecn ]

qdisc codel 10: parent 1:1 limit 2000p target 3.0ms interval 60.0ms ecn
 Sent 13347099587 bytes 8815805 pkt (dropped 0, overlimits 0 requeues 0)
 rate 202365Kbit 16708pps backlog 113550b 75p requeues 0
  count 116 lastcount 98 ldelay 4.3ms dropping drop_next 816us
  maxpacket 1514 ecn_mark 84399 drop_overlimit 0

CoDel must be seen as a base module, and should be used keeping in mind
there is still a FIFO queue. So a typical setup will probably need a
hierarchy of several qdiscs and packet classifiers to be able to meet
whatever constraints a user might have.

One possible example would be to use fq_codel, which combines Fair
Queueing and CoDel, in replacement of sfq / sfq_red.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Dave Taht <dave.taht@bufferbloat.net>

This patch provides support for marking packets with ECN instead of
dropping them with netem. This makes it possible to make use of the
netem ECN marking feature that was added recently to the kernel.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>

This patch updates the netem manpage to describe how to use
netem to mark packets with ecn instead of dropping them.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>

These man pages are now built from templates

Use sanitized version of kernel headers from 3.5 pre-rc1 merge

Reported by Robert Henney:
> the 'ip' man page does not mention the command "del" at all but does
> claim, "As a rule, it is possible to add, delete and show (or list ) objects".
> however, 'ip' does not always recognize "delete" as a commend.
>
> robh@debian:~$ ip tunnel delete
> Command "delete" is unknown, try "ip tunnel help".

Lets use "delete" in all calls to matches() for consistency. This will
make both "del" and "delete" work everywhere.
Signed-off-by: Andreas Henriksson <andreas@fatal.se>

Reported by Ivan Vilata i Balaguer <ivan@selidor.net>
found that the description of the `ip link add` command in the manpage
is outdated regarding the compulsory `link DEVICE` option.
For instance, `ip  link help` says:
    Usage: ip link add [link DEV] [ name ] NAME
     ...
But the manpage still says:
     ip link add link DEVICE [ name ] NAME

(Trying to provide a `link` option e.g. under an LXC container can frustrate
 the creation of dummy devices which don't need an actual device.)

The syntax of the "ip link help" output was fixed in commit
"iproute2: Fix usage and man page for 'ip link'" (a22e9295).
This updates the manpage to mark "link DEVICE" as an optional
argument there as well.

  http://bugs.debian.org/673171Signed-off-by: Andreas Henriksson <andreas@fatal.se>

Commit (761a1e60 iproute2 - Split up manual page installation )
introduced man/man8/Makefile but did not add all the man pages.
This patch adds the missing man pages for installation.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>

Add a man page to cover the "ip l2tp" commands. Add a reference to it
in the main ip page.

This version removes the unnecessary setting of promiscuous mode
in the examples.
Signed-off-by: James Chapman <jchapman@katalix.com>

INET_DIAG_SKMEMINFO is used to monitor socket memory information
which contains more information than INET_DIAG_MEMINFO.

-m option is retained for old kernel that don't surpport INET_DIAG_SKMEMINFO.
Signed-off-by: Shan Wei <davidshan@tencent.com>

This reverts commit 16eba344.
Hold off until next release.

Adds support for parsing IPv6 addresses to the parameters local and
remote in the l2tp commands. Requires netlink attributes L2TP_ATTR_IP6_SADDR
and L2TP_ATTR_IP6_DADDR, added in a required kernel patch already submitted
to netdev.

Also enables printing of IPv6 addresses returned by the L2TP_CMD_TUNNEL_GET
request.
Signed-off-by: Chris Elston <celston@katalix.com>
Signed-off-by: James Chapman <jchapman@katalix.com>

Define where is the are located the iproute2 config files.
Get rid of trailing slashes for paths in several file.
Signed-off-by: Christoph J. Thompson <cjsthompson@gmail.com>

Generate manual pages based on where the config files are installed.
Add missing manual pages for utilities which are links to other binaries.
Make tc-pfifo.8 a real file that points to tc-bfifo.8 instead of symlink
which causes problems with compressing manual pages.
Signed-off-by: Christoph J. Thompson <cjsthompson@gmail.com>

Allows setting optimisation flags at compile time without patching the Makefile.

modified:   Makefile
Signed-off-by: Christoph J. Thompson <cjsthompson@gmail.com>

Allows using an alternate path for config files.
Signed-off-by: Christoph J. Thompson <cjsthompson@gmail.com>

Add a new netlink attribute type to the dump request to allow
filtering of the information returned for the respective matching
interfaces.  At this time the only filter defined is to request
virtual function (VF) device info for interfaces that attached VFs.

It will also be possible to extend the request with other yet to be
defined netlink attributes in the future.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>

If kernel doesn't have INET_DIAG and using newish version of iproute
nothing would be displayed.

User new functions (inspired by libmnl) to do type safe access
of routeing attributes

Avoids showing negative metrics.
Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>

The link mode is printed in upper case, and following the general
rule that ip command output should work on input, allow either case.

Exposes existing netlink operations to modify link state of devices.

Hi,

I've attached a trivial patch for iproute2 to allow naming interfaces
created with "ip l2tp add session".

I believe patches should go through the netdev mailing list but this
patch is so small I figured that would just add noise. Hope that's OK.

Originally I thought I would need a bigger patch and was going to take a
stab at implementing something like

ip l2tp add tunnel L2TP_TUNNEL_ARGS
ip link add name NAME  [ LINK_OPTS ] type l2tp L2TP_SESSION_ARGS

(a better interface IMHO) but all the code was there already, all that I
needed to add was option parsing.

Thanks,

João Valverde

From fd8c3b712527d2e959aeabc6f6b71a9910e7be7e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Valverde?= <joao.valverde@ist.utl.pt>
Date: Mon, 26 Mar 2012 18:30:56 +0100
Subject: [PATCH] ipl2tp: allow setting session interface name

The kernel supports a link mode attribute (which can be dormant or default).
This attribute is used to control how the link watch engine
handles operstate transistion.

This adds a new parameter to ip link command to allow setting and
displaying the value.
---

There is nothing in the standard that says 0 can't be used as a key.
It makes sense to allow it. Also fix typo where ikey was printed for
when printing okey.

Signed-off-by: Florian Westphal <fw@strlen.de>