doc_rst: rename the media Sphinx suff to Documentation/media

The name of the subsystem is "media", and not "linux_tv". Also,
as we plan to add other stuff there in the future, let's
rename also the media uAPI book to media_uapi, to make it
clearer.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/Documentation/media/uapi/dvb/net-get-if.rst b/Documentation/media/uapi/dvb/net-get-if.rst
new file mode 100644
index 000000000000..92b884143ccd
--- /dev/null
+++ b/Documentation/media/uapi/dvb/net-get-if.rst
@@ -0,0 +1,50 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _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
+========
+
+.. cpp:function:: int ioctl( int fd, int request, struct dvb_net_if *net_if )
+
+
+Arguments
+=========
+
+``fd``
+    File descriptor returned by :ref:`open() <frontend_f_open>`.
+
+``request``
+    FE_SET_TONE
+
+``net_if``
+    pointer to struct :ref:`dvb_net_if <dvb-net-if>`
+
+
+Description
+===========
+
+The NET_GET_IF ioctl uses the interface number given by the struct
+:ref:`dvb_net_if <dvb-net-if>`::ifnum field and fills the content of
+struct :ref:`dvb_net_if <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, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.