From patchwork Tue Nov 23 11:53:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Mailhol X-Patchwork-Id: 12634047 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A971AC433EF for ; Tue, 23 Nov 2021 11:53:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235777AbhKWL4x (ORCPT ); Tue, 23 Nov 2021 06:56:53 -0500 Received: from smtp07.smtpout.orange.fr ([80.12.242.129]:53527 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234172AbhKWL4x (ORCPT ); Tue, 23 Nov 2021 06:56:53 -0500 Received: from tomoyo.flets-east.jp ([114.149.34.46]) by smtp.orange.fr with ESMTPA id pUMhmyepO2lVYpUMnmei4h; Tue, 23 Nov 2021 12:53:44 +0100 X-ME-Helo: tomoyo.flets-east.jp X-ME-Auth: MDU0YmViZGZmMDIzYiBlMiM2NTczNTRjNWZkZTMwOGRiOGQ4ODf3NWI1ZTMyMzdiODlhOQ== X-ME-Date: Tue, 23 Nov 2021 12:53:44 +0100 X-ME-IP: 114.149.34.46 From: Vincent Mailhol To: Marc Kleine-Budde , linux-can@vger.kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, Vincent Mailhol Subject: [PATCH v1 0/2] fix statistics for CAN RTR and Error frames Date: Tue, 23 Nov 2021 20:53:31 +0900 Message-Id: <20211123115333.624335-1-mailhol.vincent@wanadoo.fr> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org There are two common errors which are made when reporting the CAN RX statistics: 1. Incrementing the "normal" RX stats when receiving an Error frame. Error frames is an abstraction of Socket CAN and does not exist on the wire. 2. Counting the length of the Remote Transmission Frames (RTR). The length of an RTR frame is the length of the requested frame not the actual payload. In reality the payload of an RTR frame is always 0 bytes long. This patch series fix those two issues for all CAN drivers. Vincent Mailhol (2): can: do not increase rx statistics when receiving CAN error frames can: do not increase rx_bytes statistics for RTR frames drivers/net/can/at91_can.c | 9 ++------- drivers/net/can/c_can/c_can_main.c | 8 ++------ drivers/net/can/cc770/cc770.c | 6 ++---- drivers/net/can/dev/dev.c | 4 ---- drivers/net/can/dev/rx-offload.c | 7 +++++-- drivers/net/can/grcan.c | 3 ++- drivers/net/can/ifi_canfd/ifi_canfd.c | 8 ++------ drivers/net/can/janz-ican3.c | 3 ++- drivers/net/can/kvaser_pciefd.c | 8 ++------ drivers/net/can/m_can/m_can.c | 10 ++-------- drivers/net/can/mscan/mscan.c | 10 ++++++---- drivers/net/can/pch_can.c | 6 ++---- drivers/net/can/peak_canfd/peak_canfd.c | 7 ++----- drivers/net/can/rcar/rcar_can.c | 9 +++------ drivers/net/can/rcar/rcar_canfd.c | 7 ++----- drivers/net/can/sja1000/sja1000.c | 5 ++--- drivers/net/can/slcan.c | 3 ++- drivers/net/can/spi/hi311x.c | 3 ++- drivers/net/can/spi/mcp251x.c | 3 ++- drivers/net/can/sun4i_can.c | 10 ++++------ drivers/net/can/usb/ems_usb.c | 5 ++--- drivers/net/can/usb/esd_usb2.c | 5 ++--- drivers/net/can/usb/etas_es58x/es58x_core.c | 7 ------- .../net/can/usb/kvaser_usb/kvaser_usb_core.c | 2 -- .../net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 14 ++++---------- .../net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 7 ++----- drivers/net/can/usb/mcba_usb.c | 3 ++- drivers/net/can/usb/peak_usb/pcan_usb.c | 5 ++--- drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 11 ++++------- drivers/net/can/usb/peak_usb/pcan_usb_pro.c | 11 +++++------ drivers/net/can/usb/ucan.c | 7 +++++-- drivers/net/can/usb/usb_8dev.c | 10 ++++------ drivers/net/can/xilinx_can.c | 17 ++++++----------- 33 files changed, 86 insertions(+), 147 deletions(-)