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can: m_can: fix periph RX path: use rx-offload to ensure skbs are sent from softirq context

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For peripheral devices, m_can sent skbs directly from a threaded irq
instead of from a softirq context, breaking the tcan4x5x peripheral
driver completely. This patch transitions the driver to use the
rx-offload helper for peripherals, ensuring the skbs are sent from the
correct context, with h/w timestamping to ensure correct ordering.

Link: https://lore.kernel.org/r/20210308102427.63916-4-torin@maxiluxsystems.com
Signed-off-by: Torin Cooper-Bennun <torin@maxiluxsystems.com>
[mkl: m_can_class_register(): update error handling]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Torin Cooper-Bennun
2021-03-08 10:24:28 +00:00
committed by Marc Kleine-Budde
parent df06fd6782
commit 1be37d3b04
2 changed files with 107 additions and 16 deletions
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2
drivers/net/can/m_can/m_can.h
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@@ -8,6 +8,7 @@
#include <linux/can/core.h>
#include <linux/can/led.h>
#include <linux/can/rx-offload.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
@@ -71,6 +72,7 @@ struct m_can_ops {
struct m_can_classdev {
struct can_priv can;
struct can_rx_offload offload;
struct napi_struct napi;
struct net_device *net;
struct device *dev;