- mptcpd now supports ELL 0.68.

- Documentation was improved for the "check_route" address
  notification flag.

- Listening socket creation is now optional for users space path
  manager plugins.  Plugins may now call
  mptcpd_pm_add_addr_no_listener() instead of mptcpd_pm_add_addr() to
  announce a new address without creating a new listener socket.

- The script `mptcp-get-debug' was added to help simplify information
  collection for MPTCP related bug reports in general, not just for
  mptcpd alone.  It is installed in the `libexec' directory for a
  given Linux distribution, such as `/usr/local/libexec'.  Run it with
  the '--help' command line argument to list available options.

- A crash (seg fault) that occured if the `/etc/protocols' file does
  not exist was fixed.

That's the easiest way to install mptcpd.

With a badge listing which versions are available where.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

* doc: describe the default behaviour

Because for someone new, it might not be clear what it does.

The idea is also to modify the welcome page on mptcpd.mptcp.dev with the
same description.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

* doc: how to change the behaviour

While describing what's being done by default, best to mention how to
adapt that.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

---------

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

'ubuntu-latest' is now following Ubuntu 24.04, which comes with LCOV
2.0.

That's great, but the autoconf-archive package in Ubuntu 24.04 doesn't
support LCOV 2.0, a fix [1] is missing.

The simple solution not to block further development is to switch back
to Ubuntu 22.04 for this workflow.

Link: https://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=commit;h=fc10ebf6185441fcd5e0c0a183fcb97497553594 [1]

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

If any.

Before, previously set LD_PRELOAD were overridden. According to
'man ld.so', there can be more than one library to load before other
objects as this env var accepts a list separated by spaces or colons:

  A list of additional, user-specified, ELF shared objects to be loaded
  before all others.  This feature can be used to selectively override
  functions in other shared objects.

  The items of the list can be separated by spaces or colons, and there
  is no support for escaping either separator.

So let's do that: if a previous LD_PRELOAD is detected, it will no
longer be dropped, but used with the MPTCP Wrap library added at the
end, e.g.

  LD_PRELOAD=dummy.so:libmptcpwrap.so.0.0.1

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

GO apps don't use the libC, so the LD_PRELOAD technique doesn't work
with these apps.

But since GO 1.21, MPTCP is natively supported, and can be forced by
simply setting GODEBUG=multipathtcp=1. So mptcpize can easily support GO
apps by also setting this env var.

Similar to the LD_PRELOAD env var, the GODEBUG one is appended with a
comma if it was already set.

Link: https://go.dev/doc/godebug
Link: https://pkg.go.dev/net#Dialer.SetMultipathTCP

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

* github: ell master: print sha

Otherwise, it is hard to find out which version was tested last.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

* github: ell master: run each day

Of course we just had a regression with changes introduced around the WE.

Run everyday to minimise the number of changes introduced between tests.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

---------

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

* github: use 'make' with '-j'

To accelerate a bit the compilation.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

* github: use ell from repo by default

No need to compile the v0.30 in all tests.

Add a specific test to check the compatibility with the minimum version.

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

---------

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

Otherwise, only a vague error is printed:

   ../test-driver: line 112: 18416 Aborted (core dumped) "$@" >> "$log_file" 2>&1

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

Some actions will be restricted to root, check with and without.

That will increase a bit the code coverage (~4%).

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>

ELL 0.72 recently changed the way the subtests are executed: each one is
now executed in a dedicated process, forked from the same parent [1].

This is causing issues for the 'commands' test, because some shared info
are shared between subtests. 'info' could be created in a shared memory
with mmap(), but it looks like there are more changes needed in mptcpd
itself to cope with that, probably the memory allocated for the pm
structure and more.

Then, for the moment, it looks better and easier to simplify things, an
only use one subtest.

Link: https://git.kernel.org/pub/scm/libs/ell/ell.git/commit/?id=e0628c4 [1]

Signed-off-by: Matthieu Baerts (NGI0) <[email protected]>