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| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2024-10-14 18:30:41 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-10-16 04:41:52 +0300 |
| commit | 11d06f0aaef89f4cad68b92510bd9decff2d7b87 (patch) | |
| tree | 0b925deff050e30b526013d1b6ee5a431eb79442 | |
| parent | 126e799602f45e9ce1ded03ee9eadda68bf470e0 (diff) | |
| download | linux-11d06f0aaef89f4cad68b92510bd9decff2d7b87.tar.xz | |
net: dsa: vsc73xx: fix reception from VLAN-unaware bridges
Similar to the situation described for sja1105 in commit 1f9fc48fd302
("net: dsa: sja1105: fix reception from VLAN-unaware bridges"), the
vsc73xx driver uses tag_8021q and doesn't need the ds->untag_bridge_pvid
request. In fact, this option breaks packet reception.
The ds->untag_bridge_pvid option strips VLANs from packets received on
VLAN-unaware bridge ports. But those VLANs should already be stripped
by tag_vsc73xx_8021q.c as part of vsc73xx_rcv() - they are not VLANs in
VLAN-unaware mode, but DSA tags. Thus, dsa_software_vlan_untag() tries
to untag a VLAN that doesn't exist, corrupting the packet.
Fixes: 93e4649efa96 ("net: dsa: provide a software untagging function on RX for VLAN-aware bridges")
Tested-by: Pawel Dembicki <paweldembicki@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20241014153041.1110364-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/dsa/vitesse-vsc73xx-core.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c index e4b98fd51643..f18aa321053d 100644 --- a/drivers/net/dsa/vitesse-vsc73xx-core.c +++ b/drivers/net/dsa/vitesse-vsc73xx-core.c @@ -851,7 +851,6 @@ static int vsc73xx_setup(struct dsa_switch *ds) dev_info(vsc->dev, "set up the switch\n"); - ds->untag_bridge_pvid = true; ds->max_num_bridges = DSA_TAG_8021Q_MAX_NUM_BRIDGES; ds->fdb_isolation = true; |