linux-kernel - [PATCH v1 0/2] fix statistics for CAN RTR and Error frames

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Date:   Tue, 23 Nov 2021 20:53:31 +0900
From:   Vincent Mailhol <mailhol.vincent@...adoo.fr>
To:     Marc Kleine-Budde <mkl@...gutronix.de>, linux-can@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>
Subject: [PATCH v1 0/2] fix statistics for CAN RTR and Error frames

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(-)

-- 
2.32.0