From patchwork Tue Oct 13 14:13:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 288487 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71177C433DF for ; Tue, 13 Oct 2020 14:13:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 305F1247E0 for ; Tue, 13 Oct 2020 14:13:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388485AbgJMONp (ORCPT ); Tue, 13 Oct 2020 10:13:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388488AbgJMONp (ORCPT ); Tue, 13 Oct 2020 10:13:45 -0400 Received: from albert.telenet-ops.be (albert.telenet-ops.be [IPv6:2a02:1800:110:4::f00:1a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6494C0613D5 for ; Tue, 13 Oct 2020 07:13:44 -0700 (PDT) Received: from ramsan ([84.195.186.194]) by albert.telenet-ops.be with bizsmtp id fSDi2300E4C55Sk06SDiYz; Tue, 13 Oct 2020 16:13:43 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan with esmtp (Exim 4.90_1) (envelope-from ) id 1kSL3e-0006RP-HN; Tue, 13 Oct 2020 16:13:42 +0200 Received: from geert by rox.of.borg with local (Exim 4.90_1) (envelope-from ) id 1kSL3e-0007QD-FW; Tue, 13 Oct 2020 16:13:42 +0200 From: Geert Uytterhoeven To: Oliver Hartkopp , Marc Kleine-Budde Cc: "David S . Miller" , Jakub Kicinski , linux-can@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH] can: Explain PDU in CAN_ISOTP help text Date: Tue, 13 Oct 2020 16:13:41 +0200 Message-Id: <20201013141341.28487-1-geert+renesas@glider.be> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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 Acked-by: Oliver Hartkopp --- net/can/Kconfig | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/can/Kconfig b/net/can/Kconfig index 224e5e0283a986d9..7c9958df91d353c8 100644 --- a/net/can/Kconfig +++ b/net/can/Kconfig @@ -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),