net: stmmac: selftests: Capture all packets for vlan checks

While we use vlan_vid_add to trigger the tag filtering machinery
in the driver, there's no netdev associated to the VLAN. This causes the
skb to arrive with empty skb->vlan_tci fields, as the packet is marked
OTHERHOST in __netif_receive_skb_core(), and we fail our validation.

Let's use the proxy mechanism introduced for DSA, that registers a
ETH_P_ALL packet handler that runs earlier, before the vlan netdev
lookup, then filters for the correct ethertype before passing an skb
clone to our validation function.

As we may receive external frames with the right tag from the outside,
let's move the address check in the vlan validation function earlier.

Fixes: 091810dbded9 ("net: stmmac: Introduce selftests support")
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260917215339.2022523-5-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions