[PATCH net-next v4 1/5] net: dsa: mv88e6xxx: only time stamp PTPv2 frames
From: Luke Howard <hidden>
Date: 2026-07-27 03:59:33
Also in:
linux-devicetree, lkml
Subsystem:
marvell 88e6xxx ethernet switch fabric driver, networking drivers, networking [dsa], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
Marvell switches only document support for IEEE 1588v2, not for PTPv1 (IEEE 1588-2022). Reject PTPv1 frames in mv88e6xxx_should_tstamp(). Assisted-by: Claude:claude-opus-5 Signed-off-by: Luke Howard <redacted> --- drivers/net/dsa/mv88e6xxx/hwtstamp.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/dsa/mv88e6xxx/hwtstamp.c b/drivers/net/dsa/mv88e6xxx/hwtstamp.c
index 6e6472a3b75ad..e4326165e1896 100644
--- a/drivers/net/dsa/mv88e6xxx/hwtstamp.c
+++ b/drivers/net/dsa/mv88e6xxx/hwtstamp.c@@ -216,6 +216,10 @@ static struct ptp_header *mv88e6xxx_should_tstamp(struct mv88e6xxx_chip *chip, if (!chip->info->ptp_support) return NULL; + /* Marvell switches do not support IEEE 1588-2002 (PTPv1). */ + if ((type & PTP_CLASS_VMASK) != PTP_CLASS_V2) + return NULL; + hdr = ptp_parse_header(skb, type); if (!hdr) return NULL;
--
2.43.0