ip/ip6tunnel: fix help for TCLASS

Help is "[tclass TCLASS]", but only TOS was described.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
ip/ip6tunnel: reset encap limit flag on change

Flag IP6_TNL_F_IGN_ENCAP_LIMIT is set when encaplimit is none, but it was not
removed if encaplimit was set on update (ip tunnel change).

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
ip/ip6tunnel: fix update of tclass and flowlabel

When tclass or flowlabel field were updated, we only performed an OR with the
new value. For example, it was not possible to reset tclass:
  ip -6 tunnel change ip6tnl2 tclass 0

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2
README: update mail address and download location
iproute2: Don't propogate mounts out of ip

Some systems are now following the advice in
linux/Documentation/sharedsubtrees.txt and running with all mount
points shared between all mount namespaces by default.

After creating the mount namespace call mount on / with
MS_SLAVE|MS_REC to modify all mounts in the new mount namespace to
slave mounts if they are shared or private mounts otherwise.
Guarnateeing that changes to the mount namespace created with
"ip netns exec" don't propgate to other namespaces.

Reported-by: Petr Šabata <contyk@redhat.com>
Tested-by: Petr Šabata <contyk@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
iproute2: Normalize return codes in "ip netns"

Ben Hutchings pointed out that the return value of do_netns is passed
to exit and the current convention of returning -1 for failure is
inconsitent with that reality.

Return EXIT_FAILURE instead of -1 and EXIT_SUCCESS instead of 0.  To make
it clear that the return codes are expected to be passed to exit.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
iproute2: Improve "ip netns add" failure error message

Report the name of the network namespace that could not be
added.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
iproute2: Make "ip netns delete" more likely to succeed

Sometimes "ip netns delete" fails because it can not delete the file a
network namespace was mounted on.  If this only happened when a
network namespace was really in use this would be fine, but today it
is possible to pin all network namespaces by simply having a long
running process started with "ip netns exec".

Every mount is copied when a network namespace is created so it is
impossible to prevent the mounts from getting into other mount
namespaces.  Modify all mounts in the files and subdirectories of
/var/run/netns to be shared mount points so that unmount events can
propogate, making it unlikely that "ip netns delete" will fail because
a directory is mounted in another mount namespace.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
iproute2: Fill in the ip-netns.8 manpage

Document ip netns monitor.

Add a few senteces describing each command.  The manpage was looking
very scrawny.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
iproute2: Add "ip netns pids" and "ip netns identify"

Add command that go between network namespace names and process
identifiers.  The code builds and runs agains older kernels but
only works on Linux 3.8+ kernels where I have fixed stat to work
properly.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Makefile: make warnings into errors

Don't let contributions cause warnings.
libnetlink: add caveat

There are much better API's to netlink now. Encourage users to look
elsewhere.
ip/iptunnel: Extend TOS syntax

The 'inherit/STRING' or 'inherit/00..ff' syntax indicates that the
TOS field of tunneled packets should be copied from the original IP
header, but for non-IP packets the value STRING or 00..ff should be
used instead. (This syntax is already used by 'ip tunnel show'.)

Also clarify the man page and the command usage text (particularly
that the TOS is not specified as a decimal number).

Signed-off-by: David Ward <david.ward@ll.mit.edu>
ipaddr: fix a typo in error msg about SIOCGIFTXQLEN

The optname was wrong.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
iproute2: tc netem rate: allow negative packet/cell overhead

by fixing the parsing of command-line tokens

Signed-off-by: Johannes Naab <jn@stusta.de>
iplink: display the value of IFLA_PROMISCUITY

This is useful to know the 'real' status of an interface (the flag IFF_PROMISC
is exported by the kernel only when the user set it explicitly, for example it
will not be exported when a tcpdump is running).

This information will be displayed when '-details' is provided by the user.

Example:
$ ip -d l l tun10
6: tun10: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1480 qdisc noqueue state UNKNOWN mode DEFAULT
    link/sit 10.16.0.249 peer 10.16.0.121
    sit remote 10.16.0.121 local 10.16.0.249 ttl inherit pmtudisc 6rd-prefix 2002::/16
    promiscuity 2

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
ip: change format of promiscuity display

Don't put it on separate line, keep it on line with link address.
Use pkg-config to obtain xtables.h path

On openSUSE 12.2 (at least) xtables.h is not installed in the system-wide
include dir but in /usr/include/iptables-1.4.16.3/. This results in the
following build failure:
em_ipset.c:26:21: fatal error: xtables.h: No such file or directory

Other includers of xtables.h already call out to pkg-config
iproute2: clarification of various man8 pages

Rephrasing for clarity.

Note that in ip-rule.8 I rephrased a sentence to "The RPDB is scanned
in order of decreasing priority." The original version talked about
*in*creasing priority, but from the context that didn't make sense.

Signed-off-by: Kees van Reeuwijk <reeuwijk@few.vu.nl>