mlxsw: spectrum_nve: Implement common NVE core

The Spectrum ASIC supports different types of NVE encapsulations (e.g.,
VxLAN, NVGRE) with more types to be supported by future ASICs.

Despite being different, all these encapsulations share some common
functionality such as the enablement of NVE encapsulation on a given
filtering identifier (FID) and the addition of remote VTEPs to the
linked-list of VTEPs that traffic should be flooded to.

Implement this common core and allow different ASICs to register
different operations for different encapsulation types.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 63 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
new file mode 100644
index 000000000000..4abc4d8a1e68
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve_vxlan.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
+
+#include <linux/netdevice.h>
+#include <linux/netlink.h>
+
+#include "spectrum_nve.h"
+
+static bool mlxsw_sp1_nve_vxlan_can_offload(const struct mlxsw_sp_nve *nve,
+					    const struct net_device *dev,
+					    struct netlink_ext_ack *extack)
+{
+	return false;
+}
+
+static void mlxsw_sp_nve_vxlan_config(const struct mlxsw_sp_nve *nve,
+				      const struct net_device *dev,
+				      struct mlxsw_sp_nve_config *config)
+{
+}
+
+static int mlxsw_sp1_nve_vxlan_init(struct mlxsw_sp_nve *nve,
+				    const struct mlxsw_sp_nve_config *config)
+{
+	return -EOPNOTSUPP;
+}
+
+static void mlxsw_sp1_nve_vxlan_fini(struct mlxsw_sp_nve *nve)
+{
+}
+
+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,
+	.nve_config	= mlxsw_sp_nve_vxlan_config,
+	.init		= mlxsw_sp1_nve_vxlan_init,
+	.fini		= mlxsw_sp1_nve_vxlan_fini,
+};
+
+static bool mlxsw_sp2_nve_vxlan_can_offload(const struct mlxsw_sp_nve *nve,
+					    const struct net_device *dev,
+					    struct netlink_ext_ack *extack)
+{
+	return false;
+}
+
+static int mlxsw_sp2_nve_vxlan_init(struct mlxsw_sp_nve *nve,
+				    const struct mlxsw_sp_nve_config *config)
+{
+	return -EOPNOTSUPP;
+}
+
+static void mlxsw_sp2_nve_vxlan_fini(struct mlxsw_sp_nve *nve)
+{
+}
+
+const struct mlxsw_sp_nve_ops mlxsw_sp2_nve_vxlan_ops = {
+	.type		= MLXSW_SP_NVE_TYPE_VXLAN,
+	.can_offload	= mlxsw_sp2_nve_vxlan_can_offload,
+	.nve_config	= mlxsw_sp_nve_vxlan_config,
+	.init		= mlxsw_sp2_nve_vxlan_init,
+	.fini		= mlxsw_sp2_nve_vxlan_fini,
+};