From: Petr Machata <petrm@mellanox.com>
Date: Mon, 14 May 2018 09:40:44 +0300
Subject: mlxsw: spectrum_span: Support LAG under mirror-to-gretap
Patch-mainline: v4.18-rc1
Git-commit: 55c0211dcb5d33955ed977de81373cef91de665b
References: bsc#1112374
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c | 21 ++++++++++++++++++++
1 file changed, 21 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c
@@ -245,6 +245,19 @@ mlxsw_sp_span_entry_vlan(const struct ne
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(
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;