LXR linux/drivers/net/ethernet/mellanox/mlx5/core/lib/vxlan.h

   1/*
   2 * Copyright (c) 2016, Mellanox Technologies, Ltd.  All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32#ifndef __MLX5_VXLAN_H__
  33#define __MLX5_VXLAN_H__
  34
  35#include <linux/mlx5/driver.h>
  36
  37struct mlx5_vxlan;
  38struct mlx5_vxlan_port;
  39
  40static inline u8 mlx5_vxlan_max_udp_ports(struct mlx5_core_dev *mdev)
  41{
  42        return MLX5_CAP_ETH(mdev, max_vxlan_udp_ports) ?: 4;
  43}
  44
  45static inline bool mlx5_vxlan_allowed(struct mlx5_vxlan *vxlan)
  46{
  47        /* not allowed reason is encoded in vxlan pointer as error,
  48         * on mlx5_vxlan_create
  49         */
  50        return !IS_ERR_OR_NULL(vxlan);
  51}
  52
  53#if IS_ENABLED(CONFIG_VXLAN)
  54struct mlx5_vxlan *mlx5_vxlan_create(struct mlx5_core_dev *mdev);
  55void mlx5_vxlan_destroy(struct mlx5_vxlan *vxlan);
  56int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port);
  57int mlx5_vxlan_del_port(struct mlx5_vxlan *vxlan, u16 port);
  58bool mlx5_vxlan_lookup_port(struct mlx5_vxlan *vxlan, u16 port);
  59void mlx5_vxlan_reset_to_default(struct mlx5_vxlan *vxlan);
  60#else
  61static inline struct mlx5_vxlan*
  62mlx5_vxlan_create(struct mlx5_core_dev *mdev) { return ERR_PTR(-EOPNOTSUPP); }
  63static inline void mlx5_vxlan_destroy(struct mlx5_vxlan *vxlan) { return; }
  64static inline int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port) { return -EOPNOTSUPP; }
  65static inline int mlx5_vxlan_del_port(struct mlx5_vxlan *vxlan, u16 port) { return -EOPNOTSUPP; }
  66static inline bool mlx5_vxlan_lookup_port(struct mlx5_vxlan *vxlan, u16 port) { return false; }
  67static inline void mlx5_vxlan_reset_to_default(struct mlx5_vxlan *vxlan) { return; }
  68#endif
  69
  70#endif /* __MLX5_VXLAN_H__ */
  71