diff options
| author | Vincent Mailhol <mailhol@kernel.org> | 2025-11-26 13:16:06 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2025-11-26 13:20:43 +0300 |
| commit | e63281614747c73f25b708c75bc696c4e76f5588 (patch) | |
| tree | f7aa52403c2bd393a4c5f8763e18c15f0624cdd3 /drivers/net/can/dev/dev.c | |
| parent | 60f511f443e552ef5b5cd79ec2b881f4323e19c9 (diff) | |
| download | linux-e63281614747c73f25b708c75bc696c4e76f5588.tar.xz | |
can: netlink: add initial CAN XL support
CAN XL uses bittiming parameters different from Classical CAN and CAN
FD. Thus, all the data bittiming parameters, including TDC, need to be
duplicated for CAN XL.
Add the CAN XL netlink interface for all the features which are common
with CAN FD. Any new CAN XL specific features are added later on.
The first time CAN XL is activated, the MTU is set by default to
CANXL_MAX_MTU. The user may then configure a custom MTU within the
CANXL_MIN_MTU to CANXL_MAX_MTU range, in which case, the custom MTU
value will be kept as long as CAN XL remains active.
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20251126-canxl-v8-5-e7e3eb74f889@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/dev/dev.c')
| -rw-r--r-- | drivers/net/can/dev/dev.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/can/dev/dev.c b/drivers/net/can/dev/dev.c index b6980d32e5b4..bdec2c52c8ec 100644 --- a/drivers/net/can/dev/dev.c +++ b/drivers/net/can/dev/dev.c @@ -117,6 +117,12 @@ const char *can_get_ctrlmode_str(u32 ctrlmode) return "TDC-MANUAL"; case CAN_CTRLMODE_RESTRICTED: return "RESTRICTED"; + case CAN_CTRLMODE_XL: + return "XL"; + case CAN_CTRLMODE_XL_TDC_AUTO: + return "XL-TDC-AUTO"; + case CAN_CTRLMODE_XL_TDC_MANUAL: + return "XL-TDC-MANUAL"; default: return "<unknown>"; } @@ -350,7 +356,13 @@ void can_set_default_mtu(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); - if (priv->ctrlmode & CAN_CTRLMODE_FD) { + if (priv->ctrlmode & CAN_CTRLMODE_XL) { + if (can_is_canxl_dev_mtu(dev->mtu)) + return; + dev->mtu = CANXL_MTU; + dev->min_mtu = CANXL_MIN_MTU; + dev->max_mtu = CANXL_MAX_MTU; + } else if (priv->ctrlmode & CAN_CTRLMODE_FD) { dev->mtu = CANFD_MTU; dev->min_mtu = CANFD_MTU; dev->max_mtu = CANFD_MTU; |