The function aims to generalize the statistics update by centralizing
the related code, thus avoiding code duplication.
Signed-off-by: Dario Binacchi <dario.binacchi@xxxxxxxxxxxxxxxxxxxx>
---
(no changes since v1)
drivers/net/can/dev/dev.c | 30 ++++++++++++++++++++++++++++++
include/linux/can/dev.h | 1 +
2 files changed, 31 insertions(+)
diff --git a/drivers/net/can/dev/dev.c b/drivers/net/can/dev/dev.c
index 6792c14fd7eb..0a3b1aad405b 100644
--- a/drivers/net/can/dev/dev.c
+++ b/drivers/net/can/dev/dev.c
@@ -16,6 +16,36 @@
#include <linux/gpio/consumer.h>
#include <linux/of.h>
+void can_update_bus_error_stats(struct net_device *dev, struct can_frame *cf)
+{
+ struct can_priv *priv = netdev_priv(dev);
+ bool rx_errors = false, tx_errors = false;
+
+ if (!cf || !(cf->can_id & (CAN_ERR_PROT | CAN_ERR_BUSERROR)))
+ return;
+
+ priv = netdev_priv(dev);
+ priv->can_stats.bus_error++;
+
+ if ((cf->can_id & CAN_ERR_ACK) && cf->data[3] == CAN_ERR_PROT_LOC_ACK)
+ tx_errors = true;
+ else if (cf->data[2] & (CAN_ERR_PROT_BIT1 | CAN_ERR_PROT_BIT0))
+ tx_errors = true;
+
+ if (cf->data[2] & (CAN_ERR_PROT_FORM | CAN_ERR_PROT_STUFF))
+ rx_errors = true;
+ else if ((cf->data[2] & CAN_ERR_PROT_BIT) &&
+ (cf->data[3] == CAN_ERR_PROT_LOC_CRC_SEQ))
+ rx_errors = true;
+
+ if (rx_errors)
+ dev->stats.rx_errors++;
+
+ if (tx_errors)
+ dev->stats.tx_errors++;
+}
+EXPORT_SYMBOL_GPL(can_update_bus_error_stats);
+
static void can_update_state_error_stats(struct net_device *dev,
enum can_state new_state)
{
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 23492213ea35..0977656b366d 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -201,6 +201,7 @@ void can_state_get_by_berr_counter(const struct net_device *dev,
enum can_state *rx_state);
void can_change_state(struct net_device *dev, struct can_frame *cf,
enum can_state tx_state, enum can_state rx_state);
+void can_update_bus_error_stats(struct net_device *dev, struct can_frame *cf);
#ifdef CONFIG_OF
void of_can_transceiver(struct net_device *dev);
--
2.43.0
