[PATCH 0/3] Revert "can: raw: instantly reject unsupported CAN frames"

[Oliver Hartkopp <socketcan@hartkopp.net>]

This reverts commit 1a620a723853a0f49703c317d52dc6b9602cbaa8

and its follow-up fixes for the introduced dependency issues.

commit 1a620a723853 ("can: raw: instantly reject unsupported CAN frames")
commit cb2dc6d2869a ("can: Kconfig: select CAN driver infrastructure by default")
commit 6abd4577bccc ("can: fix build dependency")
commit 5a5aff6338c0 ("can: fix build dependency")

The reverted patch was accessing CAN device internal data structures
from the network layer because it needs to know about the CAN protocol
capabilities of the CAN devices.

This data access caused build problems between the CAN network and the
CAN driver layer which introduced unwanted Kconfig dependencies and fixes.

The patches 2 & 3 implement a better approach which makes use of the
CAN specific ml_priv data which is accessible from both sides.

With this change the CAN network layer can check the required features
and the decoupling of the driver layer and network layer is restored.

Oliver Hartkopp (3):
  Revert "can: raw: instantly reject unsupported CAN frames"
  can: propagate CAN device capabilities via ml_priv
  can: raw: instantly reject disabled CAN frames

 drivers/net/can/Kconfig       |  7 +++--
 drivers/net/can/Makefile      |  2 +-
 drivers/net/can/dev/Makefile  |  5 ++--
 drivers/net/can/dev/dev.c     | 27 +++++++++++++++++++
 drivers/net/can/dev/netlink.c |  1 +
 drivers/net/can/vcan.c        | 15 +++++++++++
 drivers/net/can/vxcan.c       | 15 +++++++++++
 include/linux/can/can-ml.h    | 24 +++++++++++++++++
 include/linux/can/dev.h       |  8 +-----
 net/can/raw.c                 | 49 ++++++-----------------------------
 10 files changed, 100 insertions(+), 53 deletions(-)

-- 
2.47.3