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docs: networking: nfc: change block diagram to sphinx syntax
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Change the block diagram to match the sphinx syntax. This will make it
possible to switch this file to rst in the future.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
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Robert Schwebel authored and Jakub Kicinski committed Nov 23, 2019
1 parent 66ac53a commit c0b96e8
Showing 1 changed file with 25 additions and 24 deletions.
49 changes: 25 additions & 24 deletions Documentation/networking/nfc.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -26,30 +26,31 @@ The control operations are available to userspace via generic netlink.
The low-level data exchange interface is provided by the new socket family
PF_NFC. The NFC_SOCKPROTO_RAW performs raw communication with NFC targets.


+--------------------------------------+
| USER SPACE |
+--------------------------------------+
^ ^
| low-level | control
| data exchange | operations
| |
| v
| +-----------+
| AF_NFC | netlink |
| socket +-----------+
| raw ^
| |
v v
+---------+ +-----------+
| rawsock | <--------> | core |
+---------+ +-----------+
^
|
v
+-----------+
| driver |
+-----------+
.. code-block:: none

+--------------------------------------+
| USER SPACE |
+--------------------------------------+
^ ^
| low-level | control
| data exchange | operations
| |
| v
| +-----------+
| AF_NFC | netlink |
| socket +-----------+
| raw ^
| |
v v
+---------+ +-----------+
| rawsock | <--------> | core |
+---------+ +-----------+
^
|
v
+-----------+
| driver |
+-----------+

Device Driver Interface
=======================
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