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bhyve: support serial type 'tcp'

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In addition to the nmdm consoles, bhyve also supports a tcp console.
It's configured with:

 .. -l com1,tcp=127.0.0.1:12345

Then a user could connect to the guest console port 0 by making a tcp
connection to the host's 127.0.0.1:12345.

In the domain XML this configuration is represented as:

  <serial type='tcp'>
    <source mode='bind' host='127.0.0.1' service='12345'/>
    <target type='serial' port='0'/>
  </serial>

Also, update domain capabilities to include the TCP console support.
Unfortunately, there's no way to detect that from the bhyve binary
before trying to start a VM, so there's no capability probing for this
feature.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Roman Bogorodskiy
2025-07-17 19:29:10 +02:00
parent 680ee0e7d1
commit 8b7db74d4a
11 changed files with 124 additions and 17 deletions
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tests/bhyvexml2xmloutdata/bhyvexml2xmlout-serial-tcp.xml
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<domain type='bhyve'>
<name>bhyve</name>
<uuid>df3be7e7-a104-11e3-aeb0-50e5492bd3dc</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64'>hvm</type>
<boot dev='hd'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<disk type='file' device='disk'>
<driver name='file' type='raw'/>
<source file='/tmp/freebsd.img'/>
<target dev='hda' bus='sata'/>
<address type='drive' controller='0' bus='0' target='2' unit='0'/>
</disk>
<controller type='pci' index='0' model='pci-root'/>
<controller type='isa' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
</controller>
<controller type='sata' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:b1:42:eb'/>
<source bridge='virbr0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='tcp'>
<source mode='connect' host='127.0.0.1' service='12345'/>
<protocol type='raw'/>
<target port='0'/>
</serial>
<console type='tcp'>
<source mode='connect' host='127.0.0.1' service='12345'/>
<protocol type='raw'/>
<target type='serial' port='0'/>
</console>
</devices>
</domain>