slirp: invoke client callback before creating timers

The introduction of .timer_new_opaque adds an interesting conundrum.
The Slirp* needs to be stored in .timer_new_opaque so that it can be
passed back to slirp_handle_timer, but it is not returned by slirp_new
and slirp_init until after the first call to .timer_new_opaque (which
is in ip6_init).  This is a problem for programs that, like QEMU, use
more than one Slirp*.

Fix them by passing the Slirp* to a callback before slirp_new returns,
and initializing the timer afterwards.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
6 files changed
tree: 0032ea2b8e3f34b114e052e808b06a152a513a58
  1. build-aux/
  2. src/
  3. test/
  4. .clang-format
  5. .gitignore
  6. .gitlab-ci.yml
  7. .gitpublish
  8. CHANGELOG.md
  9. COPYRIGHT
  10. meson.build
  11. meson_options.txt
  12. README.md
README.md

libslirp

libslirp is a user-mode networking library used by virtual machines, containers or various tools.

Getting Started

Prerequisites

A C compiler, meson and glib2 development libraries.

(see also .gitlab-ci.yml DEPS variable for the list of dependencies on Fedora)

Building

You may build and install the shared library with meson:

meson build
ninja -C build install

And configure QEMU with --enable-slirp=system to link against it.

(QEMU may build with the submodule static library using --enable-slirp=git)

Testing

Unfortunately, there are no automated tests available.

You may run QEMU -net user linked with your development version.

Contributing

Feel free to open issues on the project issues page.

You may clone the gitlab project and create a merge request.

Contributing with gitlab allows gitlab workflow, tracking issues, running CI etc.

Alternatively, you may send patches to slirp@lists.freedesktop.org mailing list.

Versioning

We intend to use libtool's versioning for the shared libraries and use SemVer for project versions.

For the versions available, see the tags on this repository.

License

See the COPYRIGHT file for details.