codel & fq_codel packet schedulers are now able to have a threshold
for CE marking packets, regardless of the drop/nodrop decision taken by
CoDel.

This is particularly useful for dctcp and variants, that do not use
traditional ECN.

Note that fq_codel users would have to specify noecn if ce_threshold is
used, otherwise results would be not very interesting, as ecn is default
on for fq_codel.

$ tc -s qdisc show dev eth1
qdisc codel 8002: root refcnt 45 limit 1000p target 5.0ms ce_threshold
1.0ms interval 100.0ms
 Sent 4908469888317 bytes 3351813967 pkt (dropped 0, overlimits 0
requeues 21624365)
 rate 37671Mbit 3231836pps backlog 4904740b 250p requeues 21624365
  count 0 lastcount 0 ldelay 1.1ms drop_next 0us
  maxpacket 68130 ecn_mark 0 drop_overlimit 0 ce_mark 410861803
Signed-off-by: Eric Dumazet <edumazet@google.com>

Signed-off-by: Jiri Pirko <jiri@resnulli.us>

tcp_info has 2 new fields : bytes_acked & bytes_received

$ ss -ti src :22
...
	 cubic wscale:7,6 rto:234 rtt:33.199/17.225 ato:17.225 mss:1418 cwnd:9
ssthresh:9 send 3.1Mbps lastsnd:3 lastrcv:4 lastack:193
bytes_acked:188396 bytes_received:13639 pacing_rate 6.2Mbps unacked:1
retrans:0/4 reordering:4 rcv_rtt:47.25 rcv_space:28960
Signed-off-by: Eric Dumazet <edumazet@google.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>

Get latest files

Print such info like version, tx/rx ring, fanout for
packet sockets when '-e' option was specified.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Changed to forcely running each test in network
namespace to do not affect on current network setup.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

tipc is a user-space configuration tool for TIPC (Transparent
Inter-process Communication). It utilizes the TIPC netlink API in the
kernel to fetch data or perform actions.

The tipc tool has somewhat similar syntax to the ip tool meaning that
users of the ip tool should not feel that unfamiliar with this tool.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>

Also add tipc_netlink.h for later TIPC support

In the GRED kernel source code, both of the terms "drop parameters"
(DP) and "virtual queue" (VQ) are used to refer to the same thing.
Each "DP" is better understood as a "set of drop parameters", since
it has values for limit, min, max, avpkt, etc. This terminology can
result in confusion when creating a GRED qdisc having multiple DPs.
Netlink attributes and struct members with the DP name seem to have
been left intact for compatibility, while the term VQ was otherwise
adopted in the code, which is more intuitive.

Use the VQ term in the tc command syntax and output (but maintain
compatibility with the old syntax).

Rewrite the usage text to be concise and similar to other qdiscs.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

DPs, def_DP, and DP are unsigned values that are sent and received
in TCA_GRED_* netlink attributes; handle them properly when they
are parsed or printed. Use MAX_DPs as the initial value for def_DP
and DP, and fix the operator used for bounds checking them.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

Make the output more consistent with the RED qdisc, and only show
details/statistics if the appropriate flag is set when calling tc.

Show the parameters used with "gred setup". Add missing statistics
"pdrop" and "other". Fix format specifiers for unsigned values.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

This is more helpful to the user, since the command takes two forms,
and the message that would otherwise appear about missing parameters
assumes one of those forms.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

Signed-off-by: David Ward <david.ward@ll.mit.edu>

Signed-off-by: David Ward <david.ward@ll.mit.edu>

The "bandwidth" parameter is optional, but ensure the user is aware
of its default value, to proactively avoid configuration problems.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

burst is an unsigned value.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

It is used when parsing three different parameters, only one of
which is Wlog. Change the name to make the code less confusing.
Signed-off-by: David Ward <david.ward@ll.mit.edu>

Remove double explanation of GROUP option from 'ip link set' section.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>

Fix whitespacing and remove the unnecessary condition.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Missing space before dctcp: markers.

With dctcp, cwnd=2 is pretty common, just display cwnd value even
if cwnd has this value, it makes parsing easier.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>

Kernel can give us smaller tcp_info than our.

We copy the kernel provided structure and fill with 0
the remaining part.

Lets clear only the missing part to save some cycles, as we intend to
slightly increase tcp_info size in the future.
Signed-off-by: Eric Dumazet <edumazet@google.com>

Signed-off-by: Thomas Graf <tgraf@suug.ch>

When deleting a specific basic filter with handle,
tc command always ignores the 'handle' option, so
tcm_handle is always 0 and kernel deletes all filters
in the selected group. This is wrong, we should respect
'handle' in cmdline.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>

Fixes a typo in get_prefix_1() which broke the prefix default
names { default | any | all }.

The most obvious fallout from this bug was:

	$ ip route add default via 1.1.1.1
	Error: an inet prefix is expected rather than "default".

Fixes: dacc5d41 ("add basic mpls support to iproute")
Signed-off-by: Thomas Graf <tgraf@suug.ch>

The exit code for ip label was not correct.
The return from the command function is negated and turned into
the exit code on failure.

If ip rule command fails talking to kernel, exit code should be 2.
The sub-command is called by cmd loop and the exit code is negative
of return value from the command callback.

If kernel complains about ip route request, exit status should be
2 not 1.

This fixes regression introduced by:
commit 42ecedd4
Author: Roopa Prabhu <roopa@cumulusnetworks.com>
Date:   Tue Mar 17 19:26:32 2015 -0700

    fix ip -force -batch to continue on errors

The ip command has always had a consistent exit status
document it so that developers see it.

Add a new option to toggle the ability of querying the RSS configuration of a specific VF.

VF RSS information like RSS hash key may be considered sensitive on some devices where
this information is shared between VF and PF and thus its querying may be prohibited by default.

This new option allows a system administrator with privileges to modify a PF state
to control if the above VF querying is allowed or not.

For example:
 To enable RSS querying of VF[0] of ethX:
 >> ip link set dev ethX vf 0 query_rss on
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>

Show deleting by group in 'ip link help' output:

...
ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]
...

Also show separately DEVICE option in { } list.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Indicate possibility deleting virtual links by group.

Also changed the alignment of 'ip link delete' args
descriptions, to look like similary to 'ip link set'.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Fixed applying family & socket type filters.
It was not possible to select UDP & UNIX sockets together.

Now selected families are ORed.

The problem was that filters were combined by AND.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Reported-By: Mihai Moldovan <ionic@ionic.de>

Currently, only on error we get a log dump, but I found it useful when
working with eBPF to have an option to also dump the log on success.
Also spotted a typo in a header comment, which is fixed here as well.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>

It is hard to quickly find what you are looking for in the output of the
ip command. Color helps.

This patch adds a '-c' flag to highlight these with individual colors:
  - interface name
  - ip address
  - mac address
  - up/down state
Signed-off-by: Mathias Nyman <m.nyman@iki.fi>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>

Reclone sanitized headers from 4.1-rc