18c2ecf20Sopenharmony_ci.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 28c2ecf20Sopenharmony_ci.. c:namespace:: DTV.net 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci.. _NET_GET_IF: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci**************** 78c2ecf20Sopenharmony_ciioctl NET_GET_IF 88c2ecf20Sopenharmony_ci**************** 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciName 118c2ecf20Sopenharmony_ci==== 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ciNET_GET_IF - Read the configuration data of an interface created via - :ref:`NET_ADD_IF <net>`. 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciSynopsis 168c2ecf20Sopenharmony_ci======== 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci.. c:macro:: NET_GET_IF 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci``int ioctl(int fd, NET_GET_IF, struct dvb_net_if *net_if)`` 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ciArguments 238c2ecf20Sopenharmony_ci========= 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci``fd`` 268c2ecf20Sopenharmony_ci File descriptor returned by :c:func:`open()`. 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci``net_if`` 298c2ecf20Sopenharmony_ci pointer to struct :c:type:`dvb_net_if` 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ciDescription 328c2ecf20Sopenharmony_ci=========== 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ciThe NET_GET_IF ioctl uses the interface number given by the struct 358c2ecf20Sopenharmony_ci:c:type:`dvb_net_if`::ifnum field and fills the content of 368c2ecf20Sopenharmony_cistruct :c:type:`dvb_net_if` with the packet ID and 378c2ecf20Sopenharmony_ciencapsulation type used on such interface. If the interface was not 388c2ecf20Sopenharmony_cicreated yet with :ref:`NET_ADD_IF <net>`, it will return -1 and fill 398c2ecf20Sopenharmony_cithe ``errno`` with ``EINVAL`` error code. 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ciReturn Value 428c2ecf20Sopenharmony_ci============ 438c2ecf20Sopenharmony_ci 448c2ecf20Sopenharmony_ciOn success 0 is returned, and :c:type:`ca_slot_info` is filled. 458c2ecf20Sopenharmony_ci 468c2ecf20Sopenharmony_ciOn error -1 is returned, and the ``errno`` variable is set 478c2ecf20Sopenharmony_ciappropriately. 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ciThe generic error codes are described at the 508c2ecf20Sopenharmony_ci:ref:`Generic Error Codes <gen-errors>` chapter. 51