iproute vxlan add support for fdb replace command

Add support for the bridge fdb replace command to replace an
existing entry in the vxlan device driver forwarding data base.
The entry is identified with its unicast mac address and its
corresponding remote destination information is updated.

This is useful for virtual machine migration and replaces the
bridge fdb del and bridge fdb add commands.

It follows the same interface as ip neigh replace commands.

Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
cleanup help message

Split it naturally
Fix spelling errors

Minor errors found by codespell
More minor spelling fixes
ip: Add label option to ip monitor

Prefix labelling is currently only activated when monitoring "all"
objects.  However, the output can still be confusing when monitoring
more than 1 object, so add an option to always print prefix labels.

Signed-off-by: Martin Schwenke <martin@meltin.net>
tc: allow qdisc without options

Pfifo_fast needs no options. So don't force it to have parsing code.
add ability to filter neighbour discovery by protocol

Useful to be able to monitor arp and IPv6 nd seperately.
Default is both.
iproute2: iproute.c: fix usage() spacing problems

Fix two spacing problems around square brackets in usage text.

Signed-off-by: Richard Godbee <richard@godbee.net>
iproute2: spelling: noptmudisc -> nopmtudisc

Signed-off-by: Richard Godbee <richard@godbee.net>
iproute2: ip-route.8.in: minor fixes

In SYNOPSIS section:

 - Add 'reordering'
 - Add missing '[' before 'quickack'

Signed-off-by: Richard Godbee <richard@godbee.net>
macvlan: fix typo in macvlan_print_opt()

The mode information is contained in IFLA_MACVLAN_MODE instead
of IFLA_VLAN_ID (both evaluating to "1" in their enums).

Signed-off-by: Lutz Jaenicke <ljaenicke@innominate.com>
ip/xfrm: Fix potential SIGSEGV when printing extra flags

The git-commit dc8867d0, that added support for displaying the
extra-flags of a state, introduced a potential segfault.
Trying to show a state without the extra-flag attribute and show_stats
enabled, would cause the NULL pointer in tb[XFRMA_SA_EXTRA_FLAGS] to be
dereferenced.

Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
Update kernel headers to 3.11

Last minute addition to pkt_sched.h
ipnetns: fix ip batch mode when using 'netns exec'

Since commit a05f6511f543, ip batch mode is broken when using 'netns exec' cmd.

When WIFEXITED() returns true, it means that the child exited normally, hence
we must not call exit() but just returns the status. If we call exit, the next
commands in the file file are not executed.
If WIFEXITED() returns false, we can call exit() because it means that the
child failed.

This patch partially reverts commit a05f6511f543.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
linklayer interface between kernel and tc/userspace

This iproute2 tc patch is connected to the kernel
 - commit 8a8e3d84b17 (net_sched: restore "linklayer atm" handling)

The rate table calculated by tc, have gotten replaced in the kernel
and is no-longer used for lookups.

This happened in kernel release v3.8 caused by kernel
 - commit 56b765b79 ("htb: improved accuracy at high rates").
This change unfortunately caused breakage of tc overhead and
linklayer parameters.

 Kernel overhead handling got fixed in kernel v3.10 by
 - commit 01cb71d2d47 (net_sched: restore "overhead xxx" handling)

 Kernel linklayer handling got fixed in kernel v3.11 by
 - commit 8a8e3d84b17 (net_sched: restore "linklayer atm" handling)

The linklayer fix introduced a struct change, that allow the linklayer
attribute to be transferred between tc and kernel. This patch make use
of this linklayer attribute.

The linklayer setting is transfer to the kernel.  And linklayer
setting received from the kernel is printed with a prefixed
"linklayer" when listing current configuration.  The default
TC_LINKLAYER_ETHERNET is only printed in detailed output mode.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
v3.11.0
Merge branch 'master' into net-next-3.11
Update to 3.11 net-next kernel headers
pkt_sched: fq: Fair Queue packet scheduler

Support for FQ packet scheduler

$ tc qd add dev eth0 root fq help
Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]
              [ quantum BYTES ] [ initial_quantum BYTES ]
              [ maxrate RATE  ] [ buckets NUMBER ]
              [ [no]pacing ]

$ tc -s -d qd
qdisc fq 8002: dev eth0 root refcnt 32 limit 10000p flow_limit 100p
buckets 256 quantum 3028 initial_quantum 15140
 Sent 216532416 bytes 148395 pkt (dropped 0, overlimits 0 requeues 14)
 backlog 0b 0p requeues 14
  511 flows (511 inactive, 0 throttled)
  110 gc, 0 highprio, 0 retrans, 1143 throttled, 0 flows_plimit

limit	: max number of packets on whole Qdisc (default 10000)

flow_limit : max number of packets per flow (default 100)

quantum : the max deficit per RR round (default is 2 MTU)

initial_quantum : initial credit for new flows (default is 10 MTU)

maxrate : max per flow rate (default : unlimited)

buckets : number of RB trees (default : 1024) in hash table.
               (consumes 8 bytes per bucket)

[no]pacing : disable/enable pacing (default is enable)

Usage :

tc qdisc add dev $ETH root fq

tc qdisc del dev $ETH root 2>/dev/null
tc qdisc add dev $ETH root handle 1: mq
for i in `seq 1 4`
do
  tc qdisc add dev $ETH parent 1:$i est 1sec 4sec fq
done

Signed-off-by: Eric Dumazet <edumazet@google.com>