Re: [PATCH v4 net-next 2/5] net: dsa: Don't offload port attributes on standalone ports
From: Vladimir Oltean <olteanv@gmail.com>
Date: 2020-12-16 16:28:24
On Wed, Dec 16, 2020 at 05:00:53PM +0100, Tobias Waldekranz wrote:
quoted hunk ↗ jump to hunk
In a situation where a standalone port is indirectly attached to a bridge (e.g. via a LAG) which is not offloaded, do not offload any port attributes either. The port should behave as a standard NIC. Previously, on mv88e6xxx, this meant that in the following setup: br0 / team0 / \ swp0 swp1 If vlan filtering was enabled on br0, swp0's and swp1's QMode was set to "secure". This caused all untagged packets to be dropped, as their default VID (0) was not loaded into the VTU. Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com> --- net/dsa/slave.c | 3 +++ 1 file changed, 3 insertions(+)diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 4a0498bf6c65..faae8dcc0849 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c@@ -274,6 +274,9 @@ static int dsa_slave_port_attr_set(struct net_device *dev, struct dsa_port *dp = dsa_slave_to_port(dev); int ret; + if (attr->orig_dev != dev) + return -EOPNOTSUPP; +
Should this not be: if (!dsa_port_offloads_netdev(dp, attr->orig_dev)) return -EOPNOTSUPP; ?
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
ret = dsa_port_set_state(dp, attr->u.stp_state, trans);
--
2.17.1