.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.net

.. _NET_GET_IF:

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ioctl NET_GET_IF

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Name

NET_GET_IF - Read the configuration data of an interface created via - :ref:NET_ADD_IF <net>.

Synopsis

.. c:macro:: NET_GET_IF

int ioctl(int fd, NET_GET_IF, struct dvb_net_if *net_if)

Arguments

fd File descriptor returned by :c:func:open().

net_if pointer to struct :c:type:dvb_net_if

Description

The NET_GET_IF ioctl uses the interface number given by the struct :c:type:dvb_net_if::ifnum field and fills the content of struct :c:type:dvb_net_if with the packet ID and encapsulation type used on such interface. If the interface was not created yet with :ref:NET_ADD_IF <net>, it will return -1 and fill the errno with EINVAL error code.

Return Value

On success 0 is returned, and :c:type:ca_slot_info is filled.

On error -1 is returned, and the errno variable is set appropriately.

The generic error codes are described at the :ref:Generic Error Codes <gen-errors> chapter.