Formatting JSON is moderately painful.
Provide a simple API to do the syntax formatting.

Add more explanation about VLAN reordering and what it affects.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>

The previous man page fixup introduced a syntax error due to missing
opening bracket, which might crash some humanoid BNF parsers.

Fixes: 4e972d5e ("ip-address: fix and extend documentation")
Signed-off-by: Phil Sutter <phil@nwl.cc>

My previous patch 5950ba91 ("lib/namespace: don't leak fd in error case")
was a step in the wrong direction. Instead of closing the opened file
descriptor in error case only, follow a better approach here and close
the fd as soon as it is not used anymore. This way the inelegant goto
statements can be dropped, and the fd leak in non-error case is fixed as
well.

Fixes: 5950ba91 ("lib/namespace: don't leak fd in error case")
Signed-off-by: Phil Sutter <phil@nwl.cc>

Cut one level indentation to make things easier to read.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

Add missing return value to fix warnings
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

Remove unnecessary retrun, because invarg() exit.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

 * Improve manual page synopsis and built-it help
 * Use full subcommand names (e.g. 'address' and 'maddress')
 * Specify when IPv4, IPv6 or both are affected
 * Add lifetimes, home and nodad
 * Remove any remaining excess spaces

Commit 43d29f78 substantially improves generated ip-address.8 instead of
ip-address.8.in and commit e419f2d6 removes the generated one losing the
improvements entirely. This commit recovers the lost changes, adapts
them to the current manual page and adds more man page and help
improvements.

Original commit by: Kenyon Ralph <kenyon@kenyonralph.com>

 * Add `can` to list of supported link types
 * Document `addrgenmode`
 * Document `link-netnsid`
 * Document VLAN link type
 * Improve VXLAN link type documentation
    - Fix VXLAN srcport/dstport docs
    - Document `udpcsum`, `udp6zerocsumtx` and `udp6zerocsumrx`

 * Use unabbreviated `address` and `maddress`
 * Keep only `-n` and `-netns` for network namespace

Enhance promtp message for 'spoofchk' and 'query_rss' flag, and fix a
typo.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

No need for extern on function prototypes.

Signed-off-by: Phil Sutter <phil@nwl.cc>

Signed-off-by: Phil Sutter <phil@nwl.cc>

Signed-off-by: Phil Sutter <phil@nwl.cc>

Signed-off-by: Phil Sutter <phil@nwl.cc>

This was working before, but only if realloc a) succeeded and b) did not
move the buffer to a different location. ''**buf = **new_buf' then
writes the value of *new_buf's first field into that of *buf.
Signed-off-by: Phil Sutter <phil@nwl.cc>

This patch implements support for the IFLA_BR_VLAN_FILTERING attribute
in iproute2 so it can enable/disable vlan_filtering.

Example:
$ ip link set br0 type bridge vlan_filtering 1
$ ip -d link show br0
6: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP mode DEFAULT group default
    link/ether 08:00:27:ea:07:38 brd ff:ff:ff:ff:ff:ff promiscuity 0
    bridge forward_delay 1500 hello_time 200 max_age 2000 vlan_filtering 1
    addrgenmode eui64
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

When showing bridge attributes, show also ageing_time, stp_state and
priority if available.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

fix a typo: "noarp" -> "arp"
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

Allow to print link type usage by: ip link help bridge_slave
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

Allow to print link type usage by: ip link help bridge
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

Add missing link type "bridge_slave".
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>

Change '-human-readble' to '-human-readable'.
Signed-off-by: Phil Sutter <phil@nwl.cc>

Save some space by using variable size for nsid cache elements.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

Signed-off-by: Phil Sutter <phil@nwl.cc>

Add support to be able to set and show the value of tlb_dynamic_lb
(IFLA_BOND_TLB_DYNAMIC_LB).
Example:
$ ip -d link show dev bond0 type bond
7: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default
    link/ether ce:2f:e1:6e:d7:e0 brd ff:ff:ff:ff:ff:ff promiscuity 0
    bond mode balance-tlb miimon 100 updelay 0 downdelay 0 use_carrier 1
arp_interval 0 arp_validate none arp_all_targets any primary_reselect
always fail_over_mac none xmit_hash_policy layer2 resend_igmp 1
num_grat_arp 1 all_slaves_active 0 min_links 0 lp_interval 1
packets_per_slave 1 lacp_rate slow ad_select stable tlb_dynamic_lb 1
addrgenmode eui64

$ ip -d l set dev bond0 type bond tlb_dynamic_lb 0
$ ip -d link show dev bond0 type bond
7: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default
    link/ether ce:2f:e1:6e:d7:e0 brd ff:ff:ff:ff:ff:ff promiscuity 0
    bond mode balance-tlb miimon 100 updelay 0 downdelay 0 use_carrier 1
arp_interval 0 arp_validate none arp_all_targets any primary_reselect
always fail_over_mac none xmit_hash_policy layer2 resend_igmp 1
num_grat_arp 1 all_slaves_active 0 min_links 0 lp_interval 1
packets_per_slave 1 lacp_rate slow ad_select stable tlb_dynamic_lb 0
addrgenmode eui64
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

Frontend support for kernel commit a5c90b29e5cc ("act_bpf: properly
support late binding of bpf action to a classifier").
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

One option is required for bearer set and bearer get.

Align with upstream kernel.