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mlxsw: spectrum_span: Support LAG under mirror-to-gretap 

When resolving a path that the packet will take after being encapsulated
in mirror-to-gretap scenarios, one of the devices en route could be a
LAG. In that case, mirror to first up slave that corresponds to a front
panel port.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-05-14 09:40:44 +03:00 committed by David S. Miller
parent bde4c563a9
commit 55c0211dcb
1 changed files with 21 additions and 0 deletions
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21
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
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@ -245,6 +245,19 @@ mlxsw_sp_span_entry_vlan(const struct net_device *vlan_dev,
return vlan_dev_real_dev(vlan_dev);
}
static struct net_device *
mlxsw_sp_span_entry_lag(struct net_device *lag_dev)
{
struct net_device *dev;
struct list_head *iter;
netdev_for_each_lower_dev(lag_dev, dev, iter)
if ((dev->flags & IFF_UP) && mlxsw_sp_port_dev_check(dev))
return dev;
return NULL;
}
static __maybe_unused int
mlxsw_sp_span_entry_tunnel_parms_common(struct net_device *edev,
union mlxsw_sp_l3addr saddr,
@ -278,6 +291,14 @@ mlxsw_sp_span_entry_tunnel_parms_common(struct net_device *edev,
edev = mlxsw_sp_span_entry_vlan(edev, &vid);
}
if (netif_is_lag_master(edev)) {
if (!(edev->flags & IFF_UP))
goto unoffloadable;
edev = mlxsw_sp_span_entry_lag(edev);
if (!edev)
goto unoffloadable;
}
if (!mlxsw_sp_port_dev_check(edev))
goto unoffloadable;