linux-kernel - [RFC PATCH v3 6/6] can: dev: update the error types stats (ack, CRC, form, ...)

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Message-ID: <20241029114622.2989827-7-dario.binacchi@amarulasolutions.com>
Date: Tue, 29 Oct 2024 12:45:30 +0100
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: linux-amarula@...rulasolutions.com,
	Dario Binacchi <dario.binacchi@...rulasolutions.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Gal Pressman <gal@...dia.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Kory Maincent <kory.maincent@...tlin.com>,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	Paolo Abeni <pabeni@...hat.com>,
	Rahul Rameshbabu <rrameshbabu@...dia.com>,
	Shannon Nelson <shannon.nelson@....com>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	linux-can@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [RFC PATCH v3 6/6] can: dev: update the error types stats (ack, CRC, form, ...)

The patch modifies can_update_bus_error_stats() by also updating the
counters related to the types of CAN errors.

Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>

---

(no changes since v1)

 drivers/net/can/dev/dev.c | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/drivers/net/can/dev/dev.c b/drivers/net/can/dev/dev.c
index 4ad0698b0a74..ed2bdc6fe4a1 100644
--- a/drivers/net/can/dev/dev.c
+++ b/drivers/net/can/dev/dev.c
@@ -27,16 +27,31 @@ void can_update_bus_error_stats(struct net_device *dev, struct can_frame *cf)
 	priv = netdev_priv(dev);
 	priv->can_stats.bus_error++;
 
-	if ((cf->can_id & CAN_ERR_ACK) && cf->data[3] == CAN_ERR_PROT_LOC_ACK)
+	if ((cf->can_id & CAN_ERR_ACK) && cf->data[3] == CAN_ERR_PROT_LOC_ACK) {
+		priv->can_stats.ack_error++;
 		tx_errors = true;
-	else if (cf->data[2] & (CAN_ERR_PROT_BIT1 | CAN_ERR_PROT_BIT0))
+	}
+
+	if (cf->data[2] & (CAN_ERR_PROT_BIT1 | CAN_ERR_PROT_BIT0)) {
+		priv->can_stats.bit_error++;
 		tx_errors = true;
+	}
 
-	if (cf->data[2] & (CAN_ERR_PROT_FORM | CAN_ERR_PROT_STUFF))
+	if (cf->data[2] & CAN_ERR_PROT_FORM) {
+		priv->can_stats.form_error++;
 		rx_errors = true;
-	else if ((cf->data[2] & CAN_ERR_PROT_BIT) &&
-		 (cf->data[3] == CAN_ERR_PROT_LOC_CRC_SEQ))
+	}
+
+	if (cf->data[2] & CAN_ERR_PROT_STUFF) {
+		priv->can_stats.stuff_error++;
 		rx_errors = true;
+	}
+
+	if ((cf->data[2] & CAN_ERR_PROT_BIT) &&
+	    cf->data[3] == CAN_ERR_PROT_LOC_CRC_SEQ) {
+		priv->can_stats.crc_error++;
+		rx_errors = true;
+	}
 
 	if (rx_errors)
 		dev->stats.rx_errors++;
-- 
2.43.0