[0/2] can: per-device hardware filter support

Message

Martin Hundebøll Aug. 17, 2023, 10:10 a.m. UTC

Hi all,

Based on the prior discussions on hardware filtering in CAN devices[0],
I've implemented such support in the m_can driver.

The first patch is almost entirely identical to Oliver Hartkopp's patch
from 2018[1] - I've just rebased it to v6.6 and fixed a checkpatch
warning. Not sure what to do about the "Not-Signed-off-by" tag though?

The second patch is new. I've tested it with a tcan4550 device together
with Oliver's proof-of-concept change in iproute2[2].

Has anyone tried this approach with other devices, e.g. sja1000 ?

Thanks,
Martin

[0] https://lore.kernel.org/linux-can/[e-mail]/T/
[1] https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/commit/?h=can-hw-filter&id=87128f7a953ef2eef5f2d2a02ce354350e2c4f7f
[2] https://marc.info/?l=linux-can&m=151949929522529

Martin Hundebøll (2):
  can: netlink: support setting hardware filters
  can: m_can: support setting hw filters

 drivers/net/can/dev/dev.c        |   3 +
 drivers/net/can/dev/netlink.c    |  33 ++++++++
 drivers/net/can/m_can/m_can.c    | 137 ++++++++++++++++++++++++++++++-
 include/linux/can/dev.h          |   5 ++
 include/uapi/linux/can/netlink.h |   1 +
 5 files changed, 175 insertions(+), 4 deletions(-)