Ultimately this will allow the creation of a virtio-net device that is
backed by a file descriptor.
This function ensures that the TAP device is correctly setup with
offloading and non-blocking.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
EpollHelper allows the removal of much duplicated loop handling code and
instead the device specific even handling is delegated via an
implementation of EpollHelperHandler.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Move NetQueuePair and the related NetCounters into the net_util crate.
This means that the vhost_user_net crate now no longer depends on
virtio-devices and so does not depend on the pci, qcow or other similar
crates. This significantly simplifies the build chain for this backend.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By moving the code for opening the two RX and TX queues into a shared
location we are starting to remove the requirement for the
vhost-user-net backend to depend on the virtio-devices crate which in of
itself depends on many other crates that are not necessary for the
backend to function.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rather than use an embedded String inside the MultiQueueSupport error
value use two different values to differentiate the two cases.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By moving the code for opening the TAP device into a shared location we
are starting to remove the requirement for the vhost-user-net backend to
depend on the virtio-devices crate which in of itself depends on many
other crates that are not necessary for the backend to function.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This fixes the build warning below
warning: use of deprecated item 'tap::tests::pnet::datalink::NetworkInterface::mac_address': Please use NetworkInterface's field 'mac' instead.
--> net_util/src/tap.rs:530:24
|
530 | (interface.mac_address(), tx, rx)
| ^^^^^^^^^^^
|
= note: `#[warn(deprecated)]` on by default
Signed-off-by: Anatol Belski <ab@php.net>
This can be used to preserve the host MAC address as part of the
configuration when the TAP device is precreated.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This allows an existing TAP interface to be used without needing
CAP_NET_ADMIN permissions on the Cloud Hypervisor binary as the ioctl to
bring up the interface is avoided.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This is a preparing commit to build and test CH on AArch64. All building
issues were fixed, but no functionality was introduced.
For X86, the logic of code was not changed at all.
For ARM, the architecture specific part is still empty. And we applied
some tricks to workaround lint warnings. But such code will be replaced
later by other commits with real functionality.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Do this by reading the HW address information and then modifying the
HW address to match the desired address. Preserving the rest of the
state including the address type.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to identify better the problem whenever an existing TAP is
provided, this patch enhances the error returned for an easier
diagnosis of the problem.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add support to allow VMMs to open the same tap device many times, it will
create multiple file descriptors meanwhile.
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Create vhost-user-net backend with Tap interface, to offload network
transaction from cloud-hypervisor. The goal is to provide flexibility
about the backend being in use, but also more security as it will allow
users to isolate the backend with different security profiles since it
will run as a dedicated process on the host.
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Updated clippy does not like the declaration of a "to_string()" function
and instead requires fmt::Display to be implemented.
Signed-off-by: Rob Bradford <robert.bradford@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>
