Because we cannot always assume the irq fd will be the way to send
an IRQ to the guest, this means we cannot make the assumption that
every virtio device implementation should expect an EventFd to
trigger an IRQ.
This commit organizes the code related to virtio devices so that it
now expects a Rust closure instead of a known EventFd. This lets the
caller decide what should be done whenever a device needs to trigger
an interrupt to the guest.
The closure will allow for other type of interrupt mechanism such as
MSI to be implemented. From the device perspective, it could be a
pin based interrupt or an MSI, it does not matter since the device
will simply call into the provided callback, passing the appropriate
Queue as a reference. This design keeps the device model generic.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Launch the test binary by command rather than using using the vmm layer.
This makes it easier to manage the running VM as you can explicitly kill
it.
Also switch to using credibility for the tests which catches assertions
and continues with subsequent commands and reports the issues at the
end. This means it is possible to cleanup even on failed test runs.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add basic integration testing of the hypervisor using a cloud-init to
configure the VM at boot and SSH to control it at runtime.
Initial test just boots the VM up checks some basic resources and
reboots. With a second test that calls into the first to check that
subsequent tests work correctly.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
When not running on a tty (tested with libc's isatty()) disable stdin
and do not reconfigure the terminal.
This is required to ensure that the VM responds correctly when running
in a headless environment such as Jenkins.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Instead return from the control_loop() and calling function cleanly.
This is helpful for the testing framework as that means we can launch
multiple VMs in a row.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The cargo interaction with the .cargo/config does not meet our
requirements.
Regardless of .cargo/config explicitly replacing our external sources
with vendored ones, cargo build will rely first on Cargo.lock to update
its local source cache. If a dependency has been push forced, build
fails because of our top level Cargo.toml description.
This prevents us from actually pinning dependencies, which defeats the
vendoring purpose.
We're removing vendoring for now, until we understand it better.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since the top-level Cargo.toml specifies a vmm-sys-util revision
but not the sub crates, Cargo.lock points at 2 different crates.
cargo vendor copies both of them into the vendor directory but
forces the build to use the one coming from the top level driven
requirement.
Although this is a waste of space, this is a cargo vendor limitation
that we have to live with for now.
Also, because the dependency onto linux-loader had to be updated,
we had to specify a newly introduced feature called "elf".
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We use cargo vendor to generate a .cargo/config file and the vendor
directory. Vendoring allows us to lock our dependencies and to modify
them easily from the top level Cargo.toml.
We vendor all dependencies, including the crates.io ones, which allows
for network isolated builds.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The IO memory alignment should be set as byte alignment instead of 0x400
which is copied from crosvm.
Signed-off-by: Jing Liu <jing2.liu@linux.intel.com>
The command line parsing of the user input was not properly
abstracted from the vmm specific code. In the case of --net,
the parsing was done when the device manager was adding devices.
In order to fix this confusion, this patch introduces a new
module "config" dedicated to the translation of a VmParams
structure into a VmCfg structure. The former is built based
on the input provided by the user, while the latter is the
result of the parsing of every options.
VmCfg is meant to be consumed by the vmm specific code, and
it is also a fully public structure so that it can directly
be built from a testing environment.
Fixes#31
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Store the list of disks in a Vec<PathBuf> and then iterate over that
when creating the block devices.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
We can only free ranges that exactly map an already allocated one, i.e.
this is not a range resizing.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use a catchall case for all reasons that we do not handle, and
move the vCPU run switch into its own function.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Recent refactoring of the flags parsing broke the --net behavior where
the network tap interface should be created by the VMM if the user does
not provide any argument to this option.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
CONTRIBUTING.md: removed a space to suport markdown linking
Refactored cmdline and net_params arguments to use option adapters
to achieve the same parsed results in a "more rusty" way.
Deleted a space in the contributing markdown to link properly.
Signed-off-by: Logan Saso <logansaso+tech@gmail.com>
In order to get meaningful error messages, we want to make sure all
errors are passed up the call stack. This patch fixes this previous
limitation by separating errors related to the DeviceManager from
errors related to the Vm.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If no commandline is supplied replace with an empty string. No kernel
commandline is needed when using the firmware to boot.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Until now, the only way to get some networking with cloud-hypervisor
was to let the user create a TAP interface first, and then to provide
the name of this interface to the VMM.
This patch extend the previous behavior by adding the support for the
creation of a brand new TAP interface from the VMM itself. In case no
interface name is provided through "tap=<if_name>", we will assume
the user wants the VMM to create and set the interface on its behalf,
no matter the value of other parameters (ip, mask, and mac).
In this same scenario, because the user expects the VMM to create the
TAP interface, he can also provide the associated IP address and subnet
mask associated with it. In case those values are not provided, some
default ones will be picked.
No matter the value of "tap", the MAC address will always be set, and
if no value is provided, the VMM will come up with a default value for
it.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Most of the code is taken from crosvm(bbd24c5) but is modified to
be adapted to the current VirtioDevice definition and epoll
implementation.
A new command option '--rng' is provided and it gives one the option
to override the entropy source which is /dev/urandom by default.
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Since more virtio devices will be added and this code can be reused
for any type of virtio device.
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
This patch expand the device registration to add a new virtio-net
device in case the user provide the appropriate flag --net from the
command line.
If the flag is provided, the code will parse the TAP interface name
and the expected MAC address from the command line. The VM will be
connected to the provided TAP interface, and it will communicate the
MAC address to the virtio-net driver.
If the flag is not provided, the VM will not register any virtio-net
device, therefore it will not have any connectivity with the host.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The newly added virtio-net implementation needs to interact with TAP
interfaces and MAC addresses, which is the reason why it is easier
to rely on existing packages net_util and net_gen.
One more thing, both net_util and net_gen could be trimmed down,
based on using only the things we need from cloud-hypervisor.
Both net_util, net_gen and sys_util are based on Firecracker
commit d4a89cdc0bd2867f821e3678328dabad6dd8b767.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to provide connectivity through network interface between
host and guest, this patch introduces the virtio-net backend.
This code is based on Firecracker commit
d4a89cdc0bd2867f821e3678328dabad6dd8b767
It is a trimmed down version of the original files as it removes the
rate limiter support. It has been ported to support vm-memory crate
and the epoll handler has been modified in order to run a dedicated
epoll loop from the device itself. This epoll loop runs in its own
dedicated thread.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
