An implementation of a user-space path manager daemon for Linux MPTCP. The Netlink API for path managers is still in flux, but this implementation aims to provide a framework for path managers.
Currently, pathmand registers a set of callbacks for a hypothetical Netlink API which should be close to the final version. It also loads the path manager plugins specified on the command line. Currently, it only uses the first plugin specified. It calls the path manager for each event it receives from the kernel.
In the future, pathmand should support:
- A more finalized Netlink API
- Support for calling kernel Netlink actions
- Policy for choosing from multiple path managers and mapping each connection to the chosen path manager
- Listening for new IP address events
Requires libnl-3.0, and libng-genl-3.0, and also the pkg-config tool:
cd src
make
The included patch dummy-path-manager.patch applies
on top of mptcp_trunk or mptcp_v0.94. Patch, configure this path manager as
default, and boot the MPTCP kernel, and then you can run this path manager as
follows:
$ ./main echo
init echo.c path manager
resolve family mptcp = 0x1c
resolve group mptcp.new_connection = 0xa
resolve group mptcp.new_addr = 0xb
resolve group mptcp.join_attempt = 0xc
resolve group mptcp.new_subflow = 0xd
resolve group mptcp.subflow_closed = 0xe
resolve group mptcp.conn_closed = 0xf
Which specifies the "echo" path manager. You can see sample output by running on a separate terminal:
curl http://multipath-tcp.org