kernel/linux.git/drivers/net/can/dev.c, branch v3.15.2

can: fix return value from can_get_bittiming()

2014-04-24T20:30:39+00:00

When trying to set a data bitrate on non CAN FD devices the 'ip' tool answers with: RTNETLINK answers: Unknown error 524 Rename '-ENOTSUPP' to '-EOPNOTSUPP' so that 'ip' answers correctly: RTNETLINK answers: Operation not supported Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde

can: add bittiming check at interface open for CAN FD

2014-03-07T08:18:23+00:00

Additionally to have the second (data) bitrate available the data bitrate has to be greater or equal to the arbitration bitrate in CAN FD. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: allow to change the device mtu for CAN FD capable devices

2014-03-07T08:18:23+00:00

The configuration for CAN FD depends on CAN_CTRLMODE_FD enabled in the driver specific ctrlmode_supported capabilities. The configuration can be done either with the 'fd { on | off }' option in the 'ip' tool from iproute2 or by setting the CAN netdevice MTU to CAN_MTU (16) or to CANFD_MTU (72). Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: introduce the data bitrate configuration for CAN FD

2014-03-07T08:18:22+00:00

As CAN FD offers a second bitrate for the data section of the CAN frame the infrastructure for storing and configuring this second bitrate is introduced. Improved the readability of the if-statement by inserting some newlines. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: provide a separate bittiming_const parameter to bittiming functions

2014-03-07T08:18:22+00:00

As the bittiming calculation functions are to be used with different bittiming_const structures for CAN and CAN FD the direct reference to priv->bittiming_const inside these functions has to be removed. Also moved the check for existing bittiming const to one place. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: move sanity check for bitrate and tq into can_get_bittiming

2014-03-07T08:18:21+00:00

This patch moves a sanity check in order to have a second user for CAN FD. Also simplify the return value generation in can_get_bittiming() as only correct return values of can_[calc|fixup]_bittiming() lead to a return value of zero. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: only send bitrate data via netlink when available

2014-03-07T08:18:21+00:00

When setting the bitrate both can_calc_bittiming() and can_fixup_bittiming() lead to the bitrate variable to be set, when a proper bit timing is available. Only then the bitrate configuration is stored for the device, so checking for priv->bittiming.bitrate is always sufficient. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

can: preserve skbuff protocol in can_put_echo_skb

2014-03-07T08:18:20+00:00

The skbuff protocol value was formerly fixed/sanitized to ETH_P_CAN in can_put_echo_skb(). With CAN FD this value has to be preserved. This patch changes the hard assignment of the protocol value to a check of valid protocol values for CAN and CAN FD. Signed-off-by: Oliver Hartkopp Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde

Merge tag 'linux-can-next-for-3.15-20140212' of git://gitorious.org/linux-can/linux-can-next

2014-02-13T23:16:00+00:00

linux-can-next-for-3.15-20140212 Marc Kleine-Budde says: ==================== this is a pull request of eight patches for net-next/master. Florian Vaussard contributed a series that merged the sja1000 of_platform into the platform driver. The of_platform driver is finally removed. Stephane Grosjean supplied a patch to allocate CANFD skbs. In a patch by Uwe Kleine-König another missing copyright information was added to a userspace header. And a patch by Yoann DI RUZZA that adds listen only mode to the at91_can driver. ==================== Signed-off-by: David S. Miller

can: add ability to allocate CANFD frame in skb data

2014-02-04T08:34:33+00:00

This patch adds the ability of allocating a CANFD frame data structure in the skb data area. Signed-off-by: Stephane Grosjean Acked-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde