macOS provides networking API for VMs called 'vmnet.framework':
https://developer.apple.com/documentation/vmnet
We can provide its support as the new QEMU network backends which
represent three different vmnet.framework interface usage modes:
* `vmnet-shared`:
allows the guest to communicate with other guests in shared mode and
also with external network (Internet) via NAT. Has (macOS-provided)
DHCP server; subnet mask and IP range can be configured;
* `vmnet-host`:
allows the guest to communicate with other guests in host mode.
By default has enabled DHCP as `vmnet-shared`, but providing
network unique id (uuid) can make `vmnet-host` interfaces isolated
from each other and also disables DHCP.
* `vmnet-bridged`:
bridges the guest with a physical network interface.
This backends cannot work on macOS Catalina 10.15 cause we use
vmnet.framework API provided only with macOS 11 and newer. Seems
that it is not a problem, because QEMU guarantees to work on two most
recent versions of macOS which now are Big Sur (11) and Monterey (12).
Also, we have one inconvenient restriction: vmnet.framework interfaces
can create only privileged user:
`$ sudo qemu-system-x86_64 -nic vmnet-shared`
Attempt of `vmnet-*` netdev creation being unprivileged user fails with
vmnet's 'general failure'.
This happens because vmnet.framework requires `com.apple.vm.networking`
entitlement which is: "restricted to developers of virtualization software.
To request this entitlement, contact your Apple representative." as Apple
documentation says:
https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_vm_networking
One more note: we still have quite useful but not supported
'vmnet.framework' features as creating port forwarding rules, IPv6
NAT prefix specifying and so on.
Nevertheless, new backends work fine and tested within `qemu-system-x86-64`
on macOS Bir Sur 11.5.2 host with such nic models:
* e1000-82545em
* virtio-net-pci
* vmxnet3
The guests were:
* macOS 10.15.7
* Ubuntu Bionic (server cloudimg)
This series partially reuses patches by Phillip Tennen:
https://patchew.org/QEMU/20210218134947.1860-1-phillip.en...@gmail.com/
So I included his signed-off line into one of the commit messages and
also here.
v1 -> v2:
Since v1 minor typos were fixed, patches rebased onto latest master,
redundant changes removed (small commits squashed)
v2 -> v3:
- QAPI style fixes
- Typos fixes in comments
- `#include`'s updated to be in sync with recent master
v3 -> v4:
- Support vmnet interfaces isolation feature
- Support vmnet-host network uuid setting feature
- Refactored sources a bit
v4 -> v5:
- Missed 6.2 boat, now 7.0 candidate
- Fix qapi netdev descriptions and styles
(@subnetmask -> @subnet-mask)
- Support vmnet-shared IPv6 prefix setting feature
Signed-off-by: Phillip Tennen <phil...@axleos.com>
Signed-off-by: Vladislav Yaroshchuk <yaroshchuk2...@gmail.com>
Vladislav Yaroshchuk (6):
net/vmnet: add vmnet dependency and customizable option
net/vmnet: add vmnet backends to qapi/net
net/vmnet: implement shared mode (vmnet-shared)
net/vmnet: implement host mode (vmnet-host)
net/vmnet: implement bridged mode (vmnet-bridged)
net/vmnet: update qemu-options.hx
meson.build | 4 +
meson_options.txt | 2 +
net/clients.h | 11 ++
net/meson.build | 7 +
net/net.c | 10 ++
net/vmnet-bridged.m | 111 ++++++++++++
net/vmnet-common.m | 325 ++++++++++++++++++++++++++++++++++
net/vmnet-host.c | 111 ++++++++++++
net/vmnet-shared.c | 92 ++++++++++
net/vmnet_int.h | 48 +++++
qapi/net.json | 127 ++++++++++++-
qemu-options.hx | 25 +++
scripts/meson-buildoptions.sh | 3 +
13 files changed, 874 insertions(+), 2 deletions(-)
create mode 100644 net/vmnet-bridged.m
create mode 100644 net/vmnet-common.m
create mode 100644 net/vmnet-host.c
create mode 100644 net/vmnet-shared.c
create mode 100644 net/vmnet_int.h
--
2.23.0
