netdev - [PATCH net-next 22/33] can: kvaser_pciefd: Set hardware timestamp on transmitted packets

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Message-Id: <20230622082658.571150-23-mkl@pengutronix.de>
Date: Thu, 22 Jun 2023 10:26:47 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	linux-can@...r.kernel.org,
	kernel@...gutronix.de,
	Jimmy Assarsson <extja@...ser.com>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 22/33] can: kvaser_pciefd: Set hardware timestamp on transmitted packets

From: Jimmy Assarsson <extja@...ser.com>

Set hardware timestamp on transmitted packets.

Fixes: 26ad340e582d ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Signed-off-by: Jimmy Assarsson <extja@...ser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-5-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/kvaser_pciefd.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd.c
index 7646338d4d44..88bad2c2b641 100644
--- a/drivers/net/can/kvaser_pciefd.c
+++ b/drivers/net/can/kvaser_pciefd.c
@@ -1485,6 +1485,7 @@ static void kvaser_pciefd_handle_nack_packet(struct kvaser_pciefd_can *can,
 
 	if (skb) {
 		cf->can_id |= CAN_ERR_BUSERROR;
+		kvaser_pciefd_set_skb_timestamp(can->kv_pcie, skb, p->timestamp);
 		netif_rx(skb);
 	} else {
 		stats->rx_dropped++;
@@ -1516,8 +1517,15 @@ static int kvaser_pciefd_handle_ack_packet(struct kvaser_pciefd *pcie,
 		netdev_dbg(can->can.dev, "Packet was flushed\n");
 	} else {
 		int echo_idx = p->header[0] & KVASER_PCIEFD_PACKET_SEQ_MSK;
-		int dlc = can_get_echo_skb(can->can.dev, echo_idx, NULL);
-		u8 count = ioread32(can->reg_base +
+		int dlc;
+		u8 count;
+		struct sk_buff *skb;
+
+		skb = can->can.echo_skb[echo_idx];
+		if (skb)
+			kvaser_pciefd_set_skb_timestamp(pcie, skb, p->timestamp);
+		dlc = can_get_echo_skb(can->can.dev, echo_idx, NULL);
+		count = ioread32(can->reg_base +
 				    KVASER_PCIEFD_KCAN_TX_NPACKETS_REG) & 0xff;
 
 		if (count < KVASER_PCIEFD_CAN_TX_MAX_COUNT &&
-- 
2.40.1