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can: isotp: Explain PDU in CAN_ISOTP help text

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The help text for the CAN_ISOTP config symbol uses the acronym "PDU".  However,
this acronym is not explained here, nor in Documentation/networking/can.rst.

Expand the acronym to make it easier for users to decide if they need to enable
the CAN_ISOTP option or not.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201013141341.28487-1-geert+renesas@glider.be
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Geert Uytterhoeven 2020-10-13 16:13:41 +02:00 committed by Marc Kleine-Budde
parent 08c487d8d8
commit 5a7de2408f
1 changed files with 3 additions and 2 deletions
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net/can/Kconfig
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@ -62,8 +62,9 @@ config CAN_ISOTP
communication between CAN nodes via two defined CAN Identifiers.
As CAN frames can only transport a small amount of data bytes
(max. 8 bytes for 'classic' CAN and max. 64 bytes for CAN FD) this
segmentation is needed to transport longer PDUs as needed e.g. for
vehicle diagnosis (UDS, ISO 14229) or IP-over-CAN traffic.
segmentation is needed to transport longer Protocol Data Units (PDU)
as needed e.g. for vehicle diagnosis (UDS, ISO 14229) or IP-over-CAN
traffic.
This protocol driver implements data transfers according to
ISO 15765-2:2016 for 'classic' CAN and CAN FD frame types.
If you want to perform automotive vehicle diagnostic services (UDS),