Merge branch 'fix-wrong-transport_header-when-sending-vlan-tagged-frames'

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Wei Fang says:

====================
Fix wrong transport_header when sending VLAN-tagged frames

When sending a VLAN-tagged frame via AF_PACKET or tap, calling
skb_set_network_header() before skb_probe_transport_header() causes
the flow dissector to misinterpret the inner protocol header as a
VLAN header. As a result, transport_header is never set and remains
at its uninitialized sentinel value (~0U).

Move skb_probe_transport_header() to before skb_set_network_header()
so the flow dissector sees network_header still pointing to the VLAN
header and can correctly identify the transport layer.
====================

Link: https://patch.msgid.link/20260807063405.688780-1-wei.fang@oss.nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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This commit is contained in:

Paolo Abeni 2026-08-11 13:14:40 +02:00

parent b37971686e cbb35cbe8d

commit 37aae6f352

2 changed files with 4 additions and 3 deletions

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3

drivers/net/tap.c

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4

net/packet/af_packet.c

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