Re: [PATCH v13 2/7] net/vmnet: add vmnet backends to qapi/net

[Markus Armbruster <armbru@redhat.com>]

Vladislav Yaroshchuk <yaroshchuk2000@gmail.com> writes:

> Create separate netdevs for each vmnet operating mode:
> - vmnet-host
> - vmnet-shared
> - vmnet-bridged
>
> Signed-off-by: Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>

I acked v8 of the QAPI schema part.  You should add Acked-by and
Reviewed-by you receive in later revisions, unless you make changes that
invalidate them.  When in doubt, drop them.

> diff --git a/qapi/net.json b/qapi/net.json
> index 7fab2e7cd8..b922e2e34f 100644
> --- a/qapi/net.json
> +++ b/qapi/net.json
> @@ -452,6 +452,120 @@
>      '*vhostdev':     'str',
>      '*queues':       'int' } }
>  
> +##
> +# @NetdevVmnetHostOptions:
> +#
> +# vmnet (host mode) network backend.
> +#
> +# Allows the vmnet interface to communicate with other vmnet
> +# interfaces that are in host mode and also with the host.
> +#
> +# @start-address: The starting IPv4 address to use for the interface.
> +#                 Must be in the private IP range (RFC 1918). Must be
> +#                 specified along with @end-address and @subnet-mask.
> +#                 This address is used as the gateway address. The
> +#                 subsequent address up to and including end-address are
> +#                 placed in the DHCP pool.
> +#
> +# @end-address: The DHCP IPv4 range end address to use for the
> +#               interface. Must be in the private IP range (RFC 1918).
> +#               Must be specified along with @start-address and
> +#               @subnet-mask.
> +#
> +# @subnet-mask: The IPv4 subnet mask to use on the interface. Must
> +#               be specified along with @start-address and @subnet-mask.
> +#
> +# @isolated: Enable isolation for this interface. Interface isolation
> +#            ensures that vmnet interface is not able to communicate
> +#            with any other vmnet interfaces. Only communication with
> +#            host is allowed. Available since macOS Big Sur 11.0.

What happens when the host is too old?

> +#
> +# @net-uuid: The identifier (UUID) to uniquely identify the isolated
> +#            network vmnet interface should be added to. If
> +#            set, no DHCP service is provided for this interface and
> +#            network communication is allowed only with other interfaces
> +#            added to this network identified by the UUID. Available
> +#            since macOS Big Sur 11.0.

Same question.

> +#
> +# Since: 7.0
> +##
> +{ 'struct': 'NetdevVmnetHostOptions',
> +  'data': {
> +    '*start-address': 'str',
> +    '*end-address':   'str',
> +    '*subnet-mask':   'str',
> +    '*isolated':      'bool',
> +    '*net-uuid':      'str' },
> +  'if': 'CONFIG_VMNET' }
> +
> +##
> +# @NetdevVmnetSharedOptions:
> +#
> +# vmnet (shared mode) network backend.
> +#
> +# Allows traffic originating from the vmnet interface to reach the
> +# Internet through a network address translator (NAT).
> +# The vmnet interface can communicate with the host and with
> +# other shared mode interfaces on the same subnet. If no DHCP
> +# settings, subnet mask and IPv6 prefix specified, the interface can
> +# communicate with any of other interfaces in shared mode.
> +#
> +# @start-address: The starting IPv4 address to use for the interface.
> +#                 Must be in the private IP range (RFC 1918). Must be
> +#                 specified along with @end-address and @subnet-mask.
> +#                 This address is used as the gateway address. The
> +#                 subsequent address up to and including end-address are
> +#                 placed in the DHCP pool.
> +#
> +# @end-address: The DHCP IPv4 range end address to use for the
> +#               interface. Must be in the private IP range (RFC 1918).
> +#               Must be specified along with @start-address and @subnet-mask.
> +#
> +# @subnet-mask: The IPv4 subnet mask to use on the interface. Must
> +#                be specified along with @start-address and @subnet-mask.
> +#
> +# @isolated: Enable isolation for this interface. Interface isolation
> +#            ensures that vmnet interface is not able to communicate
> +#            with any other vmnet interfaces. Only communication with
> +#            host is allowed. Available since macOS Big Sur 11.0.

Same question.

> +#
> +# @nat66-prefix: The IPv6 prefix to use into guest network. Must be a
> +#                unique local address i.e. start with fd00::/8 and have
> +#                length of 64.
> +#
> +# Since: 7.0
> +##
> +{ 'struct': 'NetdevVmnetSharedOptions',
> +  'data': {
> +    '*start-address': 'str',
> +    '*end-address':   'str',
> +    '*subnet-mask':   'str',
> +    '*isolated':      'bool',
> +    '*nat66-prefix':  'str' },
> +  'if': 'CONFIG_VMNET' }
> +
> +##
> +# @NetdevVmnetBridgedOptions:
> +#
> +# vmnet (bridged mode) network backend.
> +#
> +# Bridges the vmnet interface with a physical network interface.
> +#
> +# @ifname: The name of the physical interface to be bridged.
> +#
> +# @isolated: Enable isolation for this interface. Interface isolation
> +#            ensures that vmnet interface is not able to communicate
> +#            with any other vmnet interfaces. Only communication with
> +#            host is allowed. Available since macOS Big Sur 11.0.

Same question.

> +#
> +# Since: 7.0
> +##
> +{ 'struct': 'NetdevVmnetBridgedOptions',
> +  'data': {
> +    'ifname':     'str',
> +    '*isolated':  'bool' },
> +  'if': 'CONFIG_VMNET' }
> +
>  ##
>  # @NetClientDriver:
>  #
> @@ -460,10 +574,16 @@
>  # Since: 2.7
>  #
>  #        @vhost-vdpa since 5.1
> +#        @vmnet-host since 7.0
> +#        @vmnet-shared since 7.0
> +#        @vmnet-bridged since 7.0
>  ##
>  { 'enum': 'NetClientDriver',
>    'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'vde',
> -            'bridge', 'hubport', 'netmap', 'vhost-user', 'vhost-vdpa' ] }
> +            'bridge', 'hubport', 'netmap', 'vhost-user', 'vhost-vdpa',
> +            { 'name': 'vmnet-host', 'if': 'CONFIG_VMNET' },
> +            { 'name': 'vmnet-shared', 'if': 'CONFIG_VMNET' },
> +            { 'name': 'vmnet-bridged', 'if': 'CONFIG_VMNET' }] }
>  
>  ##
>  # @Netdev:
> @@ -477,6 +597,9 @@
>  # Since: 1.2
>  #
>  #        'l2tpv3' - since 2.1
> +#        'vmnet-host' - since 7.0
> +#        'vmnet-shared' - since 7.0
> +#        'vmnet-bridged' - since 7.0
>  ##
>  { 'union': 'Netdev',
>    'base': { 'id': 'str', 'type': 'NetClientDriver' },
> @@ -492,7 +615,13 @@
>      'hubport':  'NetdevHubPortOptions',
>      'netmap':   'NetdevNetmapOptions',
>      'vhost-user': 'NetdevVhostUserOptions',
> -    'vhost-vdpa': 'NetdevVhostVDPAOptions' } }
> +    'vhost-vdpa': 'NetdevVhostVDPAOptions',
> +    'vmnet-host': { 'type': 'NetdevVmnetHostOptions',
> +                    'if': 'CONFIG_VMNET' },
> +    'vmnet-shared': { 'type': 'NetdevVmnetSharedOptions',
> +                      'if': 'CONFIG_VMNET' },
> +    'vmnet-bridged': { 'type': 'NetdevVmnetBridgedOptions',
> +                       'if': 'CONFIG_VMNET' } } }
>  
>  ##
>  # @RxState: