macOS provides networking API for VMs called vmnet.framework.
I tried to add it as a network backend. All three modes are supported:
-shared:
allows the guest to comminicate with other guests in shared mode and
also with external network (Internet) via NAT
-host:
allows the guest to communicate with other guests in host mode
-bridged:
bridges the guest with a physical network interface
Separate netdev for each vmnet mode was created because they use quite
different settings, especially since macOS 11.0 when vmnet.framework
gets a lot of updates.
Not sure that I use qemu_mutex_lock_iothread() and
qemu_mutex_unlock_iothread() in correct way while sending packet
from vmnet interface to QEMU. I'll be happy to receive
recomendations how to make this thing better if I done sth wrong.
Also vmnet.framework requires com.apple.vm.networking entitlement to
run without root priveledges. Ad-hoc signing does not fit there,
so I didn't touch anything related to signing. As a result we should
run qemu-system by a priviledged user:
`$ sudo qemu-system-x86_64 -nic vmnet-shared`
otherwise vmnet fails with 'general failure'.
But in any way it seems working now,
I tested it within qemu-system-x86-64 on macOS 10.15.7 host, with nic
models:
- e1000-82545em
- virtio-net-pci
and having such guests:
- macOS 10.15.7
- Ubuntu Bionic (server cloudimg)
v1:
Since v1 minor typos were fixed, patches rebased onto latest master, redudant
changes removed (small commits squashed)
Vladislav Yaroshchuk (6):
net/vmnet: dependencies setup, initial preparations
net/vmnet: create common netdev state structure
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
configure | 31 +++++
meson.build | 5 +
net/clients.h | 11 ++
net/meson.build | 7 ++
net/net.c | 10 ++
net/vmnet-bridged.m | 123 ++++++++++++++++++
net/vmnet-common.m | 294 ++++++++++++++++++++++++++++++++++++++++++++
net/vmnet-host.c | 93 ++++++++++++++
net/vmnet-shared.c | 94 ++++++++++++++
net/vmnet_int.h | 48 ++++++++
qapi/net.json | 99 ++++++++++++++-
qemu-options.hx | 17 +++
12 files changed, 830 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
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2.23.0