Commit Graph

12 Commits

Author SHA1 Message Date
Sebastien Boeuf
40dc3e7c10 net_util: Introduce virtio-net control queue handling code
This code is ported from the net_util.rs in virtio-devices. The point
being to move it to the net_util crate so that it can later be reused
from vhost-user-net backend.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-05-19 18:21:47 +02:00
Rob Bradford
496ceed1d0 misc: Remove unnecessary "extern crate"
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>
2021-05-12 17:26:11 +02:00
Bo Chen
b176ddfe2a virtio-devices, vmm: Add rate limiter for the TX queue of virtio-net
Partially fixes: #1286

Signed-off-by: Bo Chen <chen.bo@intel.com>
2021-03-30 19:47:43 +02:00
Rob Bradford
c1be41bfbf net_util: Replace use of rand crate with libc::getrandom()
The rand crate provides a full cross platform true cryptographic random
number implementation. As such it brings it lots of othe dependencies
and increases our binary size and compile time. This is excessive for
generating a MAC address.

From the cargo tree output:

│   │   ├── rand v0.8.3
│   │   │   ├── libc v0.2.86
│   │   │   ├── rand_chacha v0.3.0
│   │   │   │   ├── ppv-lite86 v0.2.10
│   │   │   │   └── rand_core v0.6.0
│   │   │   │       └── getrandom v0.2.0
│   │   │   │           ├── cfg-if v0.1.10
│   │   │   │           └── libc v0.2.86
│   │   │   └── rand_core v0.6.0 (*)

And cargo bloat:

 0.0%   0.4% 40.4KiB rand_chacha rand_chacha::guts::refill_wide::impl_sse2
 0.0%   0.4% 40.0KiB rand_chacha rand_chacha::guts::refill_wide::impl_ssse3
 0.0%   0.3% 37.6KiB rand_chacha rand_chacha::guts::refill_wide::impl_avx
 0.0%   0.3% 37.2KiB rand_chacha rand_chacha::guts::refill_wide::impl_sse41
 0.0%   0.2% 26.1KiB rand_chacha rand_chacha::guts::refill_wide::impl_avx2

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-02-23 11:07:48 +00:00
Rob Bradford
56bfe2700d virtio-devices, net_util: Migrate virtio-net to EpollHelper
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>
2020-07-24 13:50:37 +02:00
Rob Bradford
17766fcea4 net_util, vhost_user_net, virtio-devices: Move NetQueuePair
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>
2020-07-08 16:11:50 +01:00
Rob Bradford
1237784a8f net_util, virtio-devices: Move TAP register/unregister helpers
Move these helper functions into net_util so that they can be used from
code inside there.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-08 16:11:50 +01:00
Rob Bradford
7f3e40e0cf net_util: Consolidate vnet_hdr_len() functions
As a result of refactoring this function was duplicated so consolidate
into the top level.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-08 16:11:50 +01:00
Rob Bradford
48faf3abac net_util, virtio-devices, vhost_user_net: Relocate {Rx,Tx}Virtio
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>
2020-07-08 16:11:50 +01:00
Rob Bradford
3e807a19b7 net_util, virtio-devices, vhost_user_net: Relocate code for opening TAP
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>
2020-07-08 16:11:50 +01:00
Samuel Ortiz
576a28ae5e net_util: Add helper for generating a random local MAC
We must ensure our MAC addresses do not conflict with a global one.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-10 16:32:39 +02:00
Sebastien Boeuf
53f5295454 network: Add virtio-net dependencies
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>
2019-05-10 16:32:39 +02:00