Add net_namespace.h and update other headers

Added new '-N NSNAME, --net=NSNAME' option to show socket stats
from the specified network namespace name.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Add section for additional arguments to GRE, IPIP, and SIT types
that are related to Foo-over-UDP and Generic UDP Encapsulation.
Also, added an example GUE configuration in the examples section.
Signed-off-by: Tom Herbert <therbert@google.com>

This patch adds support to remote checksum checksum offload
confinguration for IPIP, SIT, and GRE tunnels. This patch
adds a [no]encap-remcsum to ip link command which applicable
when configured tunnels that use GUE.

http://tools.ietf.org/html/draft-herbert-remotecsumoffload-00

Example:

ip link add name tun1 type gre remote 192.168.1.1 local 192.168.1.2 \
   ttl 225 encap fou encap-sport auto encap-dport 7777 encap-csum \
   encap-remcsum

This would create an GRE tunnel in GUE encapsulation where the source
port is automatically selected (based on hash of inner packet),
checksums in the encapsulating UDP header are enabled (needed.for
remote checksum offload), and remote checksum ffload is configured to
be used on the tunnel (affects TX side).
Signed-off-by: Tom Herbert <therbert@google.com>

Introduce new option -c[ompressvlans] to request
vlan ranges from kernel

(pls suggest better option names if this does not look ok)

$bridge vlan show
port	vlan ids
dummy0	 1 PVID Egress Untagged

dummy1	 1 PVID Egress Untagged
	 2
	 3
	 4
	 5
	 6
	 7
	 9
	 10
	 12

br0	 1 PVID Egress Untagged

$bridge help
Usage: bridge [ OPTIONS ] OBJECT { COMMAND | help }
where  OBJECT := { link | fdb | mdb | vlan | monitor }
       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] |
                    -o[neline] | -t[imestamp] | -n[etns] name |
                    -c[ompressvlans] }
$bridge -c vlan show
port	vlan ids
dummy0	 1 PVID Egress Untagged

dummy1	 1 PVID Egress Untagged
	 2-7
	 9-10
	 12

br0	 1 PVID Egress Untagged
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>

This patch adds vlan range support to bridge add command
using the newly added vinfo flags BRIDGE_VLAN_INFO_RANGE_BEGIN and
BRIDGE_VLAN_INFO_RANGE_END.

$bridge vlan show
port    vlan ids
br0      1 PVID Egress Untagged

dummy0   1 PVID Egress Untagged

$bridge vlan add vid 10-15 dev dummy0
port    vlan ids
br0      1 PVID Egress Untagged

dummy0   1 PVID Egress Untagged
         10
         11
         12
         13
         14
         15

$bridge vlan del vid 14 dev dummy0

$bridge vlan show
port    vlan ids
br0      1 PVID Egress Untagged

dummy0   1 PVID Egress Untagged
         10
         11
         12
         13
         15

$bridge vlan del vid 10-15 dev dummy0

$bridge vlan show
port    vlan ids
br0      1 PVID Egress Untagged

dummy0   1 PVID Egress Untagged
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>

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

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

This patch makes CAN_CTRLMODE_FD_NON_ISO netlink feature configurable.

During the CAN FD standardization process within the ISO it turned out that
the failure detection capability has to be improved.

The CAN in Automation organization (CiA) defined the already implemented CAN
FD controllers as 'non-ISO' and the upcoming improved CAN FD controllers as
'ISO' compliant. See at http://www.can-cia.com/index.php?id=1937

Starting with the - currently non-ISO - driver for M_CAN v3.0.1 introduced in
Linux 3.18 this bit needs to be propagated to userspace. In future drivers this
bit will become configurable depending on the CAN FD controllers capabilities.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>

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

"ip addr show up" would exclude the interface (link), but include the
addresses of down interfaces (which looked like they where indented
under a different interface). This fixes the filtering.

For a full example see the original bug report at:
http://bugs.debian.org/776040Reported-by: Paul Slootman <paul@debian.org>
CC: 776040@bugs.debian.org
Signed-off-by: Andreas Henriksson <andreas@fatal.se>

Allow delete all namespace names by:

    $ ip -all netns del
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

This change allows to exec some cmd on each
named netns (except default) by specifying '-all' option:

    # ip -all netns exec ip link

Each command executes synchronously.

Exit status is not considered, so there might be a case
that some CMD can fail on some netns but success on the other.

EXAMPLES:

1) Show link info on all netns:

$ ip -all netns exec ip link

netns: test_net
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 500
    link/ether 1a:19:6f:25:eb:85 brd ff:ff:ff:ff:ff:ff

netns: home0
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 500
    link/ether ea:1a:59:40:d3:29 brd ff:ff:ff:ff:ff:ff

netns: lan0
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
4: tap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 500
    link/ether ce:49:d5:46:81:ea brd ff:ff:ff:ff:ff:ff

2) Set UP tap0 device for the all netns:

$ ip -all netns exec ip link set dev tap0 up

netns: test_net

netns: home0

netns: lan0
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Added possibility to run some func on each netns.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

Pull in headers from later tree

Sanitized header from upstream 3.20-rc kernel

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

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

Added two tests which checks the following fixed issues:

    1) Bug when not possible add new virtual interface via:

        $ ip link add dev XXX type

       It was fixed a few releases ago.

    2) Crash on older kernels when VF rate info does not exist:

        $ ip link show

       Used dump file from William Dauchy <william@gandi.net>:
           testsuite/tests/ip/link/dev_wo_vf_rate.nl

       So 'ip link show' replaced by 'ip -d monitor file ...' which does
       the same thing.

Also added new func in testsuite/lib/generic.sh to gen new random dev name.

Added 'clean' dependency on running all tests.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

As inet dgram sockets (udp, raw) can call connect(...)  - they
might be set in ESTABLISHED state. So keep the original behaviour of
'ss' which filtered them by ESTABLISHED state by default. So:

    $ ss -u

    or

    $ ss -w

Will show only ESTABLISHED UDP sockets by default.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

When HAVE_SETNS is not set, iproute2 provides a local implementation of this
function based on __NR_setns.
This macro is defined in sys/syscall.h, which was not included, thus the local
implementation always returned -1.

CC: Vadim Kochan <vadim4j@gmail.com>
Fixes: eb67e449 ("lib: Add netns_switch func for change network namespace")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

Warning was:
In file included from bridge.c:16:0:
../include/namespace.h:33:12: warning: ‘setns’ defined but not used [-Wunused-function]

CC: Vadim Kochan <vadim4j@gmail.com>
Fixes: eb67e449 ("lib: Add netns_switch func for change network namespace")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>

In the ip-link(8) man page, for the gretap, ip6gre, and ip6gretap types, the
word tunnel was incorrectly spelled 'tuunel'.
Signed-off-by: Reese Moore <ram@vt.edu>

Need to check for invalid address and buffer overrun in ip neigh
command with invalid paramters.

This patch adds configuration and dumping of congestion control metric
for ip route, for example:

  ip route add <dst> dev foo congctl [lock] dctcp

Reference: http://thread.gmane.org/gmane.linux.network/344733Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

Renamed get_netns_fd -> netns_get_fd and moved to
lib/namespace.c
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

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

Add #define for nlmsg_type = 15
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

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

When 'ss' prints UDP sockets info together with RAW sockets
e.g.:

    $ ss -a

then UDP sockets are resolved as "ipproto-xxx".

It was caused that dg_proto was set after printing UDP
socket info from netlink. So fixed issue by moving
setting dg_proto before printing info from Netlink.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

The issue was caused that ifla_vf_rate does not exist on
older kernels and should be checked if it exists as nested attr.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Reported-by: William Dauchy <william@gandi.net>
Tested-by: William Dauchy <william@gandi.net>