mlxsw: Create separate ipip_ops_arr for different ASICs

Currently, there is support for IP-in-IP only with IPv4 underlay for all
supported Spectrum ASICs.
The next patches will add support for IPv6 underlay only for Spectrum-2
and above.

Add infrastructure for splitting IP-in-IP support between different
ASICs - create separate ipip_ops_arr and add ipips_init function to set the
right ops.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.c

@@ -324,7 +324,11 @@ static const struct mlxsw_sp_ipip_ops mlxsw_sp_ipip_gre4_ops = {
 	.ol_netdev_change = mlxsw_sp_ipip_ol_netdev_change_gre4,
 };
 
-const struct mlxsw_sp_ipip_ops *mlxsw_sp_ipip_ops_arr[] = {
+const struct mlxsw_sp_ipip_ops *mlxsw_sp1_ipip_ops_arr[] = {
+	[MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
+};
+
+const struct mlxsw_sp_ipip_ops *mlxsw_sp2_ipip_ops_arr[] = {
 	[MLXSW_SP_IPIP_TYPE_GRE4] = &mlxsw_sp_ipip_gre4_ops,
 };
 

drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h

@@ -70,6 +70,7 @@ struct mlxsw_sp_ipip_ops {
 				struct netlink_ext_ack *extack);
 };
 
-extern const struct mlxsw_sp_ipip_ops *mlxsw_sp_ipip_ops_arr[];
+extern const struct mlxsw_sp_ipip_ops *mlxsw_sp1_ipip_ops_arr[];
+extern const struct mlxsw_sp_ipip_ops *mlxsw_sp2_ipip_ops_arr[];
 
 #endif /* _MLXSW_IPIP_H_*/

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

@@ -115,6 +115,7 @@ struct mlxsw_sp_rif_ops {
 
 struct mlxsw_sp_router_ops {
 	int (*init)(struct mlxsw_sp *mlxsw_sp);
+	int (*ipips_init)(struct mlxsw_sp *mlxsw_sp);
 };
 
 static struct mlxsw_sp_rif *
@@ -9468,7 +9469,6 @@ static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp)
 {
 	int err;
 
-	mlxsw_sp->router->ipip_ops_arr = mlxsw_sp_ipip_ops_arr;
 	INIT_LIST_HEAD(&mlxsw_sp->router->ipip_list);
 
 	err = mlxsw_sp_ipip_ecn_encap_init(mlxsw_sp);
@@ -9481,6 +9481,18 @@ static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp)
 	return mlxsw_sp_ipip_config_tigcr(mlxsw_sp);
 }
 
+static int mlxsw_sp1_ipips_init(struct mlxsw_sp *mlxsw_sp)
+{
+	mlxsw_sp->router->ipip_ops_arr = mlxsw_sp1_ipip_ops_arr;
+	return mlxsw_sp_ipips_init(mlxsw_sp);
+}
+
+static int mlxsw_sp2_ipips_init(struct mlxsw_sp *mlxsw_sp)
+{
+	mlxsw_sp->router->ipip_ops_arr = mlxsw_sp2_ipip_ops_arr;
+	return mlxsw_sp_ipips_init(mlxsw_sp);
+}
+
 static void mlxsw_sp_ipips_fini(struct mlxsw_sp *mlxsw_sp)
 {
 	WARN_ON(!list_empty(&mlxsw_sp->router->ipip_list));
@@ -9895,6 +9907,7 @@ static int mlxsw_sp1_router_init(struct mlxsw_sp *mlxsw_sp)
 
 const struct mlxsw_sp_router_ops mlxsw_sp1_router_ops = {
 	.init = mlxsw_sp1_router_init,
+	.ipips_init = mlxsw_sp1_ipips_init,
 };
 
 static int mlxsw_sp2_router_init(struct mlxsw_sp *mlxsw_sp)
@@ -9910,6 +9923,7 @@ static int mlxsw_sp2_router_init(struct mlxsw_sp *mlxsw_sp)
 
 const struct mlxsw_sp_router_ops mlxsw_sp2_router_ops = {
 	.init = mlxsw_sp2_router_init,
+	.ipips_init = mlxsw_sp2_ipips_init,
 };
 
 int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
@@ -9955,7 +9969,7 @@ int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
 	if (err)
 		goto err_rifs_init;
 
-	err = mlxsw_sp_ipips_init(mlxsw_sp);
+	err = mlxsw_sp->router_ops->ipips_init(mlxsw_sp);
 	if (err)
 		goto err_ipips_init;