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The CAN error message frames (i.e. error skb) are an interface specific to socket CAN. The payload of the CAN error message frames does not correspond to any actual data sent on the wire. Only an error flag and a delimiter are transmitted when an error occurs (c.f. ISO 11898-1 section 10.4.4.2 "Error flag"). For this reason, it makes no sense to increment the tx_packets and tx_bytes fields of struct net_device_stats when sending an error message frame because no actual payload will be transmitted on the wire. N.B. Sending error message frames is a very specific feature which, at the moment, is only supported by the Kvaser Hydra hardware. Please refer to [1] for more details on the topic. [1] https://lore.kernel.org/linux-can/CAMZ6RqK0rTNg3u3mBpZOoY51jLZ-et-J01tY6-+mWsM4meVw-A@mail.gmail.com/t/#u Link: https://lore.kernel.org/all/20211207121531.42941-3-mailhol.vincent@wanadoo.fr Co-developed-by: Jimmy Assarsson <extja@kvaser.com> Signed-off-by: Jimmy Assarsson <extja@kvaser.com> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
History
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| .. | ||
| c_can | ||
| cc770 | ||
| dev | ||
| ifi_canfd | ||
| m_can | ||
| mscan | ||
| peak_canfd | ||
| rcar | ||
| sja1000 | ||
| softing | ||
| spi | ||
| usb | ||
| at91_can.c | ||
| flexcan.c | ||
| grcan.c | ||
| janz-ican3.c | ||
| Kconfig | ||
| kvaser_pciefd.c | ||
| led.c | ||
| Makefile | ||
| pch_can.c | ||
| slcan.c | ||
| sun4i_can.c | ||
| ti_hecc.c | ||
| vcan.c | ||
| vxcan.c | ||
| xilinx_can.c | ||