Method

QmiDeviceadd_link

since: 1.28

Declaration [src] 

void
qmi_device_add_link (
  QmiDevice* self,
  guint mux_id,
  const gchar* base_ifname,
  const gchar* ifname_prefix,
  GCancellable* cancellable,
  GAsyncReadyCallback callback,
  gpointer user_data
)

Description [src]

Asynchronously creates a new virtual network device node with a custom prefix on top of base_ifname. This allows having multiple net interfaces running on top of another using multiplexing.

If the kernel driver doesn’t allow this functionality, a QMI_CORE_ERROR_UNSUPPORTED error will be returned.

The operation may fail if the given interface name is not associated to the QMI control port managed by the QmiDevice.

Depending on the kernel driver in use and the multiplexing method, the given ifname_prefix may be ignored. The user should not assume that the returned link interface name is prefixed with ifname_prefix as it may not be the case.

When the operation is finished callback will be called. You can then call qmi_device_add_link_finish() to get the result of the operation.

When using the qmi_wwan kernel driver, the configured expected kernel data format will be used to select the type of multiplexing method. If the format is QMI_DEVICE_EXPECTED_DATA_FORMAT_RAW_IP the qmi_wwan specific add_mux/del_mux operations will be used. If the format is QMI_DEVICE_EXPECTED_DATA_FORMAT_QMAP_PASS_THROUGH, the generic rmnet netlink operations will be used. No multiplexing support exists when the format is QMI_DEVICE_EXPECTED_DATA_FORMAT_802_3. For every other kernel driver (e.g. ipa), rmnet netlink operations are assumed to be supported.

When using the qmi_wwan driver from a kernel older than v5.12, some of the multiplexing features like using QMI_DEVICE_MUX_ID_AUTOMATIC may not be fully available for programs that use ephimeral QmiDevice objects for single operations. .

Available since: 1.28

This method completes asynchronously. Use qmi_device_add_link_finish() inside the GAsyncReadyCallback to obtain the result of the operation.

Parameters

mux_id

Type: guint

The mux id for the link, in the [QMI_DEVICE_MUX_ID_MIN,QMI_DEVICE_MUX_ID_MAX] range, or QMI_DEVICE_MUX_ID_AUTOMATIC to find the first available mux id.

base_ifname

Type: const gchar*

The interface which the new link will be created on.

The data is owned by the caller of the method.
The value is a NUL terminated UTF-8 string.
ifname_prefix

Type: const gchar*

The prefix suggested to be used for the name of the new link created.

The data is owned by the caller of the method.
The value is a NUL terminated UTF-8 string.
cancellable

Type: GCancellable

A GCancellable, or NULL.

The argument can be NULL.
The data is owned by the caller of the method.
callback

Type: GAsyncReadyCallback

A GAsyncReadyCallback to call when the operation is finished.

The argument can be NULL.
user_data

Type: gpointer

The data to pass to callback function.

The argument can be NULL.
The data is owned by the caller of the method.