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Xin Long b1bc0f3892 iproute_lwtunnel: add options support for vxlan metadata
This patch is to add LWTUNNEL_IP_OPTS_VXLAN's parse and print to implement
vxlan options support in iproute_lwtunnel.

Option is expressed a number for gbp only, and vxlan doesn't support
multiple options.

With this patch, users can add and dump vxlan options like:

  # ip netns add a
  # ip netns add b
  # ip -n a link add eth0 type veth peer name eth0 netns b
  # ip -n a link set eth0 up
  # ip -n b link set eth0 up
  # ip -n a addr add 10.1.0.1/24 dev eth0
  # ip -n b addr add 10.1.0.2/24 dev eth0
  # ip -n b link add vxlan1 type vxlan id 1 local 10.1.0.2 \
    remote 10.1.0.1 dev eth0 ttl 64 gbp
  # ip -n b addr add 1.1.1.1/24 dev vxlan1
  # ip -n b link set vxlan1 up
  # ip -n b route add 2.1.1.0/24 dev vxlan1
  # ip -n a link add vxlan1 type vxlan local 10.1.0.1 dev eth0 ttl 64 \
    gbp external
  # ip -n a addr add 2.1.1.1/24 dev vxlan1
  # ip -n a link set vxlan1 up
  # ip -n a route add 1.1.1.0/24 encap ip id 1 \
    vxlan_opts 1110 dst 10.1.0.2 dev vxlan1
  # ip -n a route show
  # ip netns exec a ping 1.1.1.1 -c 1

   1.1.1.0/24  encap ip id 1 src 0.0.0.0 dst 10.1.0.2 ttl 0 tos 0
     vxlan_opts 1110 dev vxlan1 scope link

   PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
   64 bytes from 1.1.1.1: icmp_seq=1 ttl=64 time=0.111 ms

v1->v2:
  - improve the changelog.
  - get_u32 with base = 0 for gbp.
  - use PRINT_ANY to support dumping with json format.
v2->v3:
  - implement proper JSON array for opts.
v3->v4:
  - keep the same format between input and output, json and non json.
  - print gbp as uint.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
2020-05-01 16:33:03 +00:00
bash-completion devlink: fix encap mode manupulation 2020-04-06 10:00:32 -07:00
bridge bridge: Fix tunnelshow json output 2019-12-16 20:49:28 -08:00
devlink devlink: Add devlink health auto_dump command support 2020-04-19 22:27:13 +00:00
doc/actions doc: remove trailing whitespace 2018-12-19 12:02:38 -08:00
etc/iproute2 iproute2: Add support for a few routing protocols 2018-06-11 11:18:30 -07:00
examples/bpf examples: remove diffserv 2019-10-23 09:13:55 -07:00
genl genl: remove dead code 2018-11-19 11:42:44 -08:00
include Update kernel headers and import mptcp.h 2020-04-29 16:41:39 +00:00
ip iproute_lwtunnel: add options support for vxlan metadata 2020-05-01 16:33:03 +00:00
lib json_print: Add new json object function not as array item 2020-01-27 05:43:54 -08:00
man erspan: Add type I version 0 support. 2020-04-30 02:40:10 +00:00
misc ss: allow dumping MPTCP subflow information 2020-04-29 16:44:55 +00:00
netem doc: remove trailing whitespace 2018-12-19 12:02:38 -08:00
rdma man: rdma-statistic: Add filter description 2020-02-28 13:53:00 -08:00
schema bridge: add json schema for bridge fdb show 2016-07-20 12:02:02 -07:00
tc tc: pedit: Support JSON dumping 2020-04-30 02:43:23 +00:00
testsuite ss: fix tests to reflect compact output 2020-02-04 03:21:06 -08:00
tipc build: fix build failure with -fno-common 2020-01-20 09:40:59 -08:00
.clang-format clang-format: add configuration file 2019-01-17 13:38:23 -08:00
.gitignore Remove leftovers from removed Latex documentation 2018-02-13 16:43:19 -08:00
.mailmap mailmap: map David's mail address 2019-05-15 09:50:42 -07:00
COPYING Update address of FSF in license 2008-03-08 13:31:03 -08:00
Makefile bash-completion: devlink: add bash-completion function 2020-03-25 16:46:09 +00:00
README README: update libdb build dependency information 2018-05-01 19:29:03 -07:00
README.devel README: update location of git repositories, remove broken info link 2018-02-13 16:42:51 -08:00
configure make yacc usage POSIX compatible 2020-01-20 09:43:22 -08:00

README

This is a set of utilities for Linux networking.

Information:
    https://wiki.linuxfoundation.org/networking/iproute2

Download:
    http://www.kernel.org/pub/linux/utils/net/iproute2/

Stable version repository:
    git://git.kernel.org/pub/scm/network/iproute2/iproute2.git

Development repository:
    git://git.kernel.org/pub/scm/network/iproute2/iproute2-next.git

How to compile this.
--------------------
1. libdbm

arpd needs to have the berkeleydb development libraries. For Debian
users this is the package with a name like libdbX.X-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines.  Often this is in the db-devel package.

2. make

The makefile will automatically build a config.mk file which
contains definitions of libraries that may or may not be available
on the system such as: ATM, ELF, MNL, and SELINUX.

3. To make documentation, cd to doc/ directory , then
   look at start of Makefile and set correct values for
   PAGESIZE=a4		, ie: a4 , letter ...	(string)
   PAGESPERPAGE=2	, ie: 1 , 2 ...		(numeric)
   and make there. It assumes, that latex, dvips and psnup
   are in your path.

4. This package includes matching sanitized kernel headers because
   the build environment may not have up to date versions. See Makefile
   if you have special requirements and need to point at different
   kernel include files.

Stephen Hemminger
stephen@networkplumber.org

Alexey Kuznetsov
kuznet@ms2.inr.ac.ru