Octeontx2/CN10K silicon MAC blocks CGX/RPM supports DMAC filters.
These patches add devlink trap support for this functionality.

Patch 1: Introduces mailbox handlers to retrieve the DMAC filter 
         drop counter.
 
Patch 2: Adds driver callbacks to support devlink traps.

Hariprasad Kelam (2):
  octeontx2-af: Mailbox handlers to fetch DMAC filter drop counter
  Octeontx2-pf: Add support for DMAC_FILTER trap
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V4 * Address AI review comments 

V3 * Address review comments suggested by Claude Code

V2 * fix warnings reported by kernel test robot

 .../net/ethernet/marvell/octeontx2/af/cgx.c   |  11 ++
 .../net/ethernet/marvell/octeontx2/af/cgx.h   |   2 +
 .../marvell/octeontx2/af/lmac_common.h        |   1 +
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |   7 +
 .../net/ethernet/marvell/octeontx2/af/rpm.c   |  18 +-
 .../net/ethernet/marvell/octeontx2/af/rpm.h   |   2 +
 .../ethernet/marvell/octeontx2/af/rvu_cgx.c   |  23 +++
 .../marvell/octeontx2/nic/otx2_devlink.c      | 167 ++++++++++++++++++
 .../marvell/octeontx2/nic/otx2_devlink.h      |  23 ++-
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  |   7 +
 10 files changed, 259 insertions(+), 2 deletions(-)

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2.34.1