[lkml]   [2018]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 4.18 049/135] net: dsa: b53: Keep CPU port as tagged in all VLANs
4.18-stable review patch.  If anyone has any objections, please let me know.


From: Florian Fainelli <>

[ Upstream commit ca8931948344c485569b04821d1f6bcebccd376b ]

Commit c499696e7901 ("net: dsa: b53: Stop using dev->cpu_port
incorrectly") was a bit too trigger happy in removing the CPU port from
the VLAN membership because we rely on DSA to program the CPU port VLAN,
which it does, except it does not bother itself with tagged/untagged and
just usese untagged.

Having the CPU port "follow" the user ports tagged/untagged is not great
and does not allow for properly differentiating, so keep the CPU port
tagged in all VLANs.

Reported-by: Gerhard Wiesinger <>
Fixes: c499696e7901 ("net: dsa: b53: Stop using dev->cpu_port incorrectly")
Signed-off-by: Florian Fainelli <>
Signed-off-by: David S. Miller <>
Signed-off-by: Greg Kroah-Hartman <>
drivers/net/dsa/b53/b53_common.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1107,7 +1107,7 @@ void b53_vlan_add(struct dsa_switch *ds,
b53_get_vlan_entry(dev, vid, vl);

vl->members |= BIT(port);
- if (untagged)
+ if (untagged && !dsa_is_cpu_port(ds, port))
vl->untag |= BIT(port);
vl->untag &= ~BIT(port);
@@ -1149,7 +1149,7 @@ int b53_vlan_del(struct dsa_switch *ds,
pvid = 0;

- if (untagged)
+ if (untagged && !dsa_is_cpu_port(ds, port))
vl->untag &= ~(BIT(port));

b53_set_vlan_entry(dev, vid, vl);

 \ /
  Last update: 2018-10-16 19:45    [W:0.294 / U:1.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site