iplink: macvtap: fix man page

This patch adds description about macvtap to ip-link.8 man page.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
link dump filter

This patch avoids a full link wildump request when the user has specified
a single link. Uses RTM_GETLINK without the NLM_F_DUMP flag.

This helps on a system with large number of interfaces.

This patch currently only uses the link ifindex in the filter.
Hoping to provide a subsequent kernel patch to do link dump filtering on
other attributes in the kernel.

In iplink_get, to be safe, this patch currently sets the answer buffer
size to the max size that libnetlink rtnl_talk can copy. The current api
does not seem to provide a way to indicate the answer buf size.

changelog from RFC to v1:
    - incorporated comments from stephen (fixed comment and fixed if/else block)

changelog from v1 to v2:
    - fix whitespaces error

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
iproute2 bridge: bring to above par with brctl show macs

root@moja-mojo:bridge# ./bridge fdb help
Usage: bridge fdb { add | append | del | replace } ADDR dev DEV {self|master} [ temp ]
              [router] [ dst IPADDR] [ vlan VID ]
              [ port PORT] [ vni VNI ] [via DEV]
       bridge fdb {show} [ br BRDEV ] [ brport DEV ]

 Lets start with two bridges each with a port...

root@moja-mojo:bridge# ./bridge link
10: sw1-p1 state DOWN : <BROADCAST,NOARP> mtu 1500 master sw1 state disabled priority 32 cost 100
11: eth1 state DOWN : <BROADCAST,NOARP> mtu 1500 master br0 state disabled priority 32 cost 100

show all...
root@moja-mojo:bridge# ./bridge fdb show
33:33:00:00:00:01 dev ifb0 self permanent
33:33:00:00:00:01 dev ifb1 self permanent
33:33:00:00:00:01 dev eth0 self permanent
01:00:5e:00:00:01 dev eth0 self permanent
33:33:ff:92:c0:60 dev eth0 self permanent
33:33:00:00:00:fb dev eth0 self permanent
01:00:5e:00:00:fb dev eth0 self permanent
01:00:5e:7f:ff:fd dev eth0 self permanent
01:00:5e:00:00:01 dev wlan0 self permanent
33:33:00:00:00:01 dev wlan0 self permanent
33:33:ff:c2:84:3b dev wlan0 self permanent
33:33:00:00:00:fb dev wlan0 self permanent
01:00:5e:00:00:01 dev virbr0 self permanent
01:00:5e:00:00:fb dev virbr0 self permanent
33:33:00:00:00:01 dev br0 self permanent
33:33:00:00:00:01 dev sw1 self permanent
33:33:00:00:00:01 dev dummy0 self permanent
5e:f4:03:44:da:9a dev sw1-p1 vlan 0 master sw1 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent
b6:5e:dd:ce:d7:5e dev eth1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent

Lets see a netdev that is *not* attached to a bridge

root@moja-mojo:bridge# ./bridge fdb show brport eth0
33:33:00:00:00:01 self permanent
01:00:5e:00:00:01 self permanent
33:33:ff:92:c0:60 self permanent
33:33:00:00:00:fb self permanent
01:00:5e:00:00:fb self permanent
01:00:5e:7f:ff:fd self permanent

Lets see a netdev that is bridge port
root@moja-mojo:bridge# ./bridge fdb show brport eth1
hadi@jhs-1:/media/MT1/other-gits/iproute-jul04/bridge$ ./bridge fdb show brport eth1
b6:5e:dd:ce:d7:5e vlan 0 master br0 permanent
33:33:00:00:00:01 self permanent

Specify the correct bridge and you get good stuff
root@moja-mojo:bridge# ./bridge fdb show brport eth1 br br0
6:5e:dd:ce:d7:5e vlan 0 master br0 permanent
33:33:00:00:00:01 self permanent

Specify the wrong bridge and you get good nada
root@moja-mojo:bridge# ./bridge fdb show brport eth1 br sw1

dump br0
root@moja-mojo:bridge# ./bridge fdb show br br0
33:33:00:00:00:01 dev br0 self permanent
b6:5e:dd:ce:d7:5e dev eth1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent

dump sw1
root@moja-mojo:bridge# ./bridge fdb show br sw1
33:33:00:00:00:01 dev sw1 self permanent
5e:f4:03:44:da:9a dev sw1-p1 vlan 0 master sw1 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent

Lets move a port from one bridge to another for shits-and-giggles
(as the New Brunswickians like to say)
root@moja-mojo:bridge# ip link set sw1-p1 master br0

Now dump again br0
root@moja-mojo:bridge# ./bridge fdb show br br0
33:33:00:00:00:01 dev br0 self permanent
5e:f4:03:44:da:9a dev sw1-p1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent
b6:5e:dd:ce:d7:5e dev eth1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
tc/netem: loss gemodel options fixes

First, the default value for 1-k is documented as being 0, but is
currently being set to 1. (100%).  This causes all packets to be dropped
in the good state if 1-k is not explicitly specified.  Fix this by setting
the default to 0.

	Second, the 1-h option is parsed correctly, however, the kernel is
expecting "h", not 1-h.  Fix this by inverting the "1-h" percentage before
sending to and after receiving from the kernel.  This does change the
behavior, but makes it consistent with the netem documentation and the
literature on the Gilbert-Elliot model, which refer to "1-h" and "1-k,"
not "h" or "k" directly.

	Last, fix a minor formatting issue for the options reporting.

Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
cleanup warnings

ll_index can return -1 but was declared unsigned.
rt_addr_n2a had unused length parameter
v3.16.0