Relying on the vm-virtio/virtio-queue crate from rust-vmm which has been
copied inside the Cloud Hypervisor tree, the entire codebase is moved to
the new definition of a Queue and other related structures.
The reason for this move is to follow the upstream until we get some
agreement for the patches that we need on top of that to make it
properly work with Cloud Hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This was causing some issues because of the use of 2 different versions
for the vm-memmory crate. We'll wait for all dependencies to be properly
resolved before we move to 0.7.0.
This reverts commit 76b6c62d07.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
There's no need to patch the vhost crate anymore since the fixes we were
looking for have been released as part of 0.2.0 on crates.io.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This doesn't really affect the build as we ship a Cargo.lock with fixed
versions in. However for clarity it makes sense to use fixed versions
throughout and let dependabot update them.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These crates are written to produce log messages using the error!
macro, but their logs didn't actually go anywhere, which made it very
difficult to debug when they're not working.
I've used env_logger here because it's the same log implementation
that the hypervisor crate uses.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
I don't think the min_values(1) was doing anything, since
takes_value(true) was already set, and after this change I still get
an error if I try to supply the argument with no value.
But the unwrap below would fail if the argument wasn't supplied at
all. By setting required(true) we get a nice message from clap
instead.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
We didn't implement the vhost-user-net backend to support EVENT_IDX
feature, hence it is incorrect to advertise VIRTIO_RING_F_EVENT_IDX to
the VMM and the guest.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
If writing to the TAP returns EAGAIN then listen for the TAP to be
writable. When the TAP becomes writable attempt to process the TX queue
again.
Fixes: #2807
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As the first step to complete live-migration with tracking dirty-pages
written by the VMM, this commit patches the dependent vm-memory crate to
the upstream version with the dirty-page-tracking capability. Most
changes are due to the updated `GuestMemoryMmap`, `GuestRegionMmap`, and
`MmapRegion` structs which are taking an additional generic type
parameter to specify what 'bitmap backend' is used.
The above changes should be transparent to the rest of the code base,
e.g. all unit/integration tests should pass without additional changes.
Signed-off-by: Bo Chen <chen.bo@intel.com>
We recently realized the control queue is not meant to be handled by the
backend, that's why we move it out of vhost-user-net implementation.
Revert "vhost_user_net: Handle control queue"
This reverts commit af88ff1c49.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extend the current list of available virtio features in order to make it
work correctly with the VMM side.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The virtio-net control queue must be handled by the backend, the same
way all other queues already are.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Now all crates use edition = "2018" then the majority of the "extern
crate" statements can be removed. Only those for importing macros need
to remain.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Relying on latest changes from vhost_user_backend crate, this patch
enables the client mode support for vhost-user-net backend.
In this mode, the backend behaves as a client instead of the default
mode where it behaves as the server.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The point being to identify clearly that we're running the backend as a
server. This anticipates the addition of a new function for running the
backend as a client.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In the reference vhost_user_net backend don't advertise the offload
features. For correctness we should only advertise them if we can set
them when they are acked by the guest.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Fixes the current codebase so that every cargo clippy can be run with
the beta toolchain without any error.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to support GET_MAX_MEM_SLOTS, ADD_MEM_REG and REM_MEM_REG, the
protocol feature CONFIGURE_MEM_SLOTS must be enabled.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The vhost crate from rust-vmm is ready, which is why we do the switch
from the Cloud Hypervisor fork to the upstream crate.
At the same time, we rename the crate from vhost_rs to vhost.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The main idea behind this commit is to remove all the complexity
associated with TX/RX handling for virtio-net. By using writev() and
readv() syscalls, we could get rid of intermediate buffers for both
queues.
The complexity regarding the TAP registration has been simplified as
well. The RX queue is only processed when some data are ready to be
read from TAP. The event related to the RX queue getting more
descriptors only serves the purpose to register the TAP file if it's not
already.
With all these simplifications, the code is more readable but more
performant as well. We can see an improvement of 10% for a single
queue device.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
