[PATCH net-next v2 08/12] mlxsw: spectrum_nve: Add mlxsw_sp_nve_ops.fdb_clear_offload

[Ido Schimmel]

From: Petr Machata <pe...@mellanox.com>

If there are any offloaded FDB entries at an NVE device at the time that
it's un-offloaded, their offloaded marks need to be cleared. How that is
done depends on NVE device type, and therefore add a per-NVE-type
operation.

Implement the operation for the sole NVE device type currently supported
by mlxsw, VXLAN.

Signed-off-by: Petr Machata <pe...@mellanox.com>
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h     |  1 +
 .../net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c   | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h
index e2f945543433..02937ea95bc3 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.h
@@ -42,6 +42,7 @@ struct mlxsw_sp_nve_ops {
                    const struct mlxsw_sp_nve_config *config);
        void (*fini)(struct mlxsw_sp_nve *nve);
        int (*fdb_replay)(const struct net_device *nve_dev, __be32 vni);
+       void (*fdb_clear_offload)(const struct net_device *nve_dev, __be32 vni);
 };
 
 extern const struct mlxsw_sp_nve_ops mlxsw_sp1_nve_vxlan_ops;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
index 1651c912ef77..74e564c4ac19 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
@@ -219,6 +219,14 @@ mlxsw_sp_nve_vxlan_fdb_replay(const struct net_device 
*nve_dev, __be32 vni)
        return vxlan_fdb_replay(nve_dev, vni, &mlxsw_sp_switchdev_notifier);
 }
 
+static void
+mlxsw_sp_nve_vxlan_clear_offload(const struct net_device *nve_dev, __be32 vni)
+{
+       if (WARN_ON(!netif_is_vxlan(nve_dev)))
+               return;
+       vxlan_fdb_clear_offload(nve_dev, vni);
+}
+
 const struct mlxsw_sp_nve_ops mlxsw_sp1_nve_vxlan_ops = {
        .type           = MLXSW_SP_NVE_TYPE_VXLAN,
        .can_offload    = mlxsw_sp1_nve_vxlan_can_offload,
@@ -226,6 +234,7 @@ const struct mlxsw_sp_nve_ops mlxsw_sp1_nve_vxlan_ops = {
        .init           = mlxsw_sp1_nve_vxlan_init,
        .fini           = mlxsw_sp1_nve_vxlan_fini,
        .fdb_replay     = mlxsw_sp_nve_vxlan_fdb_replay,
+       .fdb_clear_offload = mlxsw_sp_nve_vxlan_clear_offload,
 };
 
 static bool mlxsw_sp2_nve_vxlan_can_offload(const struct mlxsw_sp_nve *nve,
@@ -252,4 +261,5 @@ const struct mlxsw_sp_nve_ops mlxsw_sp2_nve_vxlan_ops = {
        .init           = mlxsw_sp2_nve_vxlan_init,
        .fini           = mlxsw_sp2_nve_vxlan_fini,
        .fdb_replay     = mlxsw_sp_nve_vxlan_fdb_replay,
+       .fdb_clear_offload = mlxsw_sp_nve_vxlan_clear_offload,
 };
-- 
2.19.1