From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Kleine-Budde Subject: [PATCH 6/6] can: enable CAN FD for virtual CAN devices by default Date: Fri, 9 Jun 2017 14:55:13 +0200 Message-ID: <20170609125513.24436-7-mkl@pengutronix.de> References: <20170609125513.24436-1-mkl@pengutronix.de> Cc: davem@davemloft.net, linux-can@vger.kernel.org, kernel@pengutronix.de, Oliver Hartkopp , Marc Kleine-Budde To: netdev@vger.kernel.org Return-path: Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:48421 "EHLO metis.ext.4.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751578AbdFIMzX (ORCPT ); Fri, 9 Jun 2017 08:55:23 -0400 In-Reply-To: <20170609125513.24436-1-mkl@pengutronix.de> Sender: netdev-owner@vger.kernel.org List-ID: From: Oliver Hartkopp CAN FD capable CAN interfaces can handle (classic) CAN 2.0 frames too. New users usually fail at their first attempt to explore CAN FD on virtual CAN interfaces due to the current CAN_MTU default. Set the MTU to CANFD_MTU by default to reduce this confusion. If someone *really* needs a 'classic CAN'-only device this can be set with the 'ip' tool with e.g. 'ip link set vcan0 mtu 16' as before. Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- drivers/net/can/vcan.c | 2 +- drivers/net/can/vxcan.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c index 0eda1b308583..a8cb33264ff1 100644 --- a/drivers/net/can/vcan.c +++ b/drivers/net/can/vcan.c @@ -152,7 +152,7 @@ static const struct net_device_ops vcan_netdev_ops = { static void vcan_setup(struct net_device *dev) { dev->type = ARPHRD_CAN; - dev->mtu = CAN_MTU; + dev->mtu = CANFD_MTU; dev->hard_header_len = 0; dev->addr_len = 0; dev->tx_queue_len = 0; diff --git a/drivers/net/can/vxcan.c b/drivers/net/can/vxcan.c index 30cf2368becf..cfe889e8f172 100644 --- a/drivers/net/can/vxcan.c +++ b/drivers/net/can/vxcan.c @@ -150,7 +150,7 @@ static const struct net_device_ops vxcan_netdev_ops = { static void vxcan_setup(struct net_device *dev) { dev->type = ARPHRD_CAN; - dev->mtu = CAN_MTU; + dev->mtu = CANFD_MTU; dev->hard_header_len = 0; dev->addr_len = 0; dev->tx_queue_len = 0; -- 2.11.0