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net: dsa: do not skip -EOPNOTSUPP in dsa_port_vid_add 

Currently dsa_port_vid_add returns 0 if the switch returns -EOPNOTSUPP.

This function is used in the tag_8021q.c code to offload the PVID of
ports, which would simply not work if .port_vlan_add is not supported
by the underlying switch.

Do not skip -EOPNOTSUPP in dsa_port_vid_add but only when necessary,
that is to say in dsa_slave_vlan_rx_add_vid.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2019-08-25 13:25:16 -04:00 committed by David S. Miller
parent e65d45cc35
commit cf360866b1
2 changed files with 7 additions and 4 deletions
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4
net/dsa/port.c
View File

@ -382,8 +382,8 @@ int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags)
trans.ph_prepare = true;
err = dsa_port_vlan_add(dp, &vlan, &trans);
if (err == -EOPNOTSUPP)
return 0;
if (err)
return err;
trans.ph_prepare = false;
return dsa_port_vlan_add(dp, &vlan, &trans);

7
net/dsa/slave.c
View File

@ -1082,8 +1082,11 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
return -EBUSY;
}
/* This API only allows programming tagged, non-PVID VIDs */
return dsa_port_vid_add(dp, vid, 0);
ret = dsa_port_vid_add(dp, vid, 0);
if (ret && ret != -EOPNOTSUPP)
return ret;
return 0;
}
static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,