diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2020-03-31 00:38:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-31 05:55:42 +0300 |
| commit | 88631864da093377ce6d5e60b5639328622a8e5c (patch) | |
| tree | e2c36ae75bffeb683dbe44c275e73429d79b4a54 /drivers/net | |
| parent | d7a0b1f7652f9f6b7ba0c9d8ad8edd6b8c0c1511 (diff) | |
| download | linux-88631864da093377ce6d5e60b5639328622a8e5c.tar.xz | |
net: dsa: b53: Prevent tagged VLAN on port 7 for 7278
On 7278, port 7 of the switch connects to the ASP UniMAC which is not
capable of processing VLAN tagged frames. We can still allow the port to
be part of a VLAN entry, and we may want it to be untagged on egress on
that VLAN because of that limitation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 5cb678e8b9cd..42c41b091682 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1355,6 +1355,14 @@ int b53_vlan_prepare(struct dsa_switch *ds, int port, if ((is5325(dev) || is5365(dev)) && vlan->vid_begin == 0) return -EOPNOTSUPP; + /* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of + * receiving VLAN tagged frames at all, we can still allow the port to + * be configured for egress untagged. + */ + if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 && + !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED)) + return -EINVAL; + if (vlan->vid_end > dev->num_vlans) return -ERANGE; |