[PATCH net-next v4 0/2] net: hsr: strict supervision TLV validation

luka.gejak
2026-04-01T09:23:50Z

From: Luka Gejak <luka.gejak@linux.dev>

This series improves the robustness of HSR supervision frame parsing.
It enforces strict supervision frame TLV validation and improves Netlink
error reporting for invalid interlink attributes.

These were previously part of a 4-patch set. The first two patches
(fixes) have been sent separately to the 'net' tree.

Changes in v4:
- Split from a 4-patch series into 'net' and 'net-next' as requested.
- Implemented a TLV walker in Patch 1 to correctly handle extension
TLVs and avoid regressions on paged frames/non-linearized skbs.
- Corrected pskb_may_pull() logic to include the TLV header size.

History of pre-separation series (v1-v3):
Changes in v3:
- addressed Felix review feedback in the VLAN add unwind fix
- removed the superfluous empty line

Changes in v2:
- picked up Reviewed-by tags on patches 1, 3 and 4
- changes in patch 2 per advice of Felix Maurer

Luka Gejak (2):
net: hsr: require valid EOT supervision TLV
net: hsr: reject unresolved interlink ifindex

net/hsr/hsr_forward.c | 41 ++++++++++++++++++++++-------------------
net/hsr/hsr_netlink.c | 7 ++++++-
2 files changed, 28 insertions(+), 20 deletions(-)

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2.53.0