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

   1 /*
   2  * drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h
   3  * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2017 Petr Machata <petrm@mellanox.com>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the names of the copyright holders nor the names of its
  15  *    contributors may be used to endorse or promote products derived from
  16  *    this software without specific prior written permission.
  17  *
  18  * Alternatively, this software may be distributed under the terms of the
  19  * GNU General Public License ("GPL") version 2 as published by the Free
  20  * Software Foundation.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef _MLXSW_IPIP_H_
  36 #define _MLXSW_IPIP_H_
  37
  38 #include "spectrum_router.h"
  39 #include <net/ip_fib.h>
  40
  41 struct ip_tunnel_parm
  42 mlxsw_sp_ipip_netdev_parms(const struct net_device *ol_dev);
  43
  44 union mlxsw_sp_l3addr
  45 mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
  46                            const struct net_device *ol_dev);
  47
  48 enum mlxsw_sp_ipip_type {
  49         MLXSW_SP_IPIP_TYPE_GRE4,
  50         MLXSW_SP_IPIP_TYPE_MAX,
  51 };
  52
  53 struct mlxsw_sp_ipip_entry {
  54         enum mlxsw_sp_ipip_type ipipt;
  55         struct net_device *ol_dev; /* Overlay. */
  56         struct mlxsw_sp_rif_ipip_lb *ol_lb;
  57         struct mlxsw_sp_fib_entry *decap_fib_entry;
  58         struct list_head ipip_list_node;
  59         struct ip_tunnel_parm parms;
  60 };
  61
  62 struct mlxsw_sp_ipip_ops {
  63         int dev_type;
  64         enum mlxsw_sp_l3proto ul_proto; /* Underlay. */
  65
  66         int (*nexthop_update)(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
  67                               struct mlxsw_sp_ipip_entry *ipip_entry);
  68
  69         bool (*can_offload)(const struct mlxsw_sp *mlxsw_sp,
  70                             const struct net_device *ol_dev,
  71                             enum mlxsw_sp_l3proto ol_proto);
  72
  73         /* Return a configuration for creating an overlay loopback RIF. */
  74         struct mlxsw_sp_rif_ipip_lb_config
  75         (*ol_loopback_config)(struct mlxsw_sp *mlxsw_sp,
  76                               const struct net_device *ol_dev);
  77
  78         int (*fib_entry_op)(struct mlxsw_sp *mlxsw_sp,
  79                             struct mlxsw_sp_ipip_entry *ipip_entry,
  80                             enum mlxsw_reg_ralue_op op,
  81                             u32 tunnel_index);
  82
  83         int (*ol_netdev_change)(struct mlxsw_sp *mlxsw_sp,
  84                                 struct mlxsw_sp_ipip_entry *ipip_entry,
  85                                 struct netlink_ext_ack *extack);
  86 };
  87
  88 extern const struct mlxsw_sp_ipip_ops *mlxsw_sp_ipip_ops_arr[];
  89
  90 #endif /* _MLXSW_IPIP_H_*/