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net: add qemu_create_nic_bus_devices()

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This will instantiate any NICs which live on a given bus type. Each bus
is allowed *one* substitution (for PCI it's virtio → virtio-net-pci, for
Xen it's xen → xen-net-device; no point in overengineering it unless we
actually want more).

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
David Woodhouse 2023-10-22 09:13:41 +01:00
parent 2cdeca04ad
commit 93125e4b4f
2 changed files with 75 additions and 0 deletions
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22
include/net/net.h
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@ -248,6 +248,28 @@ bool qemu_configure_nic_device(DeviceState *dev, bool match_default,
*/
DeviceState *qemu_create_nic_device(const char *typename, bool match_default,
const char *alias);
/*
* qemu_create_nic_bus_devices: Create configured NIC devices for a given bus
* @bus: Bus on which to create devices
* @parent_type: Object type for devices to be created (e.g. TYPE_PCI_DEVICE)
* @default_model: Object type name for default NIC model (or %NULL)
* @alias: Additional model string to replace, for user convenience
* @alias_target: Actual object type name to be used in place of @alias
*
* Instantiate dynamic NICs on a given bus, typically a PCI bus. This scans
* for available NIC configurations which either specify a model which is
* a child type of @parent_type, or which do not specify a model when
* @default_model is non-NULL. Each device is instantiated on the given @bus.
*
* A single substitution is supported, e.g. "xen" → "xen-net-device" for the
* Xen bus, or "virtio" → "virtio-net-pci" for PCI. This allows the user to
* specify a more understandable "model=" parameter on the command line, not
* only the real object typename.
*/
void qemu_create_nic_bus_devices(BusState *bus, const char *parent_type,
const char *default_model,
const char *alias, const char *alias_target);
void print_net_client(Monitor *mon, NetClientState *nc);
void net_socket_rs_init(SocketReadState *rs,
SocketReadStateFinalize *finalize,