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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/userspace-api/media/dvb/net-get-if.rst | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/userspace-api/media/dvb/net-get-if.rst | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/dvb/net-get-if.rst b/Documentation/userspace-api/media/dvb/net-get-if.rst new file mode 100644 index 000000000..e99696c9d --- /dev/null +++ b/Documentation/userspace-api/media/dvb/net-get-if.rst @@ -0,0 +1,50 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: DTV.net + +.. _NET_GET_IF: + +**************** +ioctl NET_GET_IF +**************** + +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. |