LXR linux/drivers/net/ethernet/mellanox/mlxsw/spectrum

   1/*
   2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h
   3 * Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved.
   4 * Copyright (c) 2017-2018 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#include <linux/if_tunnel.h>
  41
  42struct ip_tunnel_parm
  43mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev);
  44struct __ip6_tnl_parm
  45mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev);
  46
  47union mlxsw_sp_l3addr
  48mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
  49                           const struct net_device *ol_dev);
  50
  51bool mlxsw_sp_l3addr_is_zero(union mlxsw_sp_l3addr addr);
  52
  53enum mlxsw_sp_ipip_type {
  54        MLXSW_SP_IPIP_TYPE_GRE4,
  55        MLXSW_SP_IPIP_TYPE_MAX,
  56};
  57
  58struct mlxsw_sp_ipip_entry {
  59        enum mlxsw_sp_ipip_type ipipt;
  60        struct net_device *ol_dev; /* Overlay. */
  61        struct mlxsw_sp_rif_ipip_lb *ol_lb;
  62        struct mlxsw_sp_fib_entry *decap_fib_entry;
  63        struct list_head ipip_list_node;
  64        union {
  65                struct ip_tunnel_parm parms4;
  66        };
  67};
  68
  69struct mlxsw_sp_ipip_ops {
  70        int dev_type;
  71        enum mlxsw_sp_l3proto ul_proto; /* Underlay. */
  72
  73        int (*nexthop_update)(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
  74                              struct mlxsw_sp_ipip_entry *ipip_entry);
  75
  76        bool (*can_offload)(const struct mlxsw_sp *mlxsw_sp,
  77                            const struct net_device *ol_dev,
  78                            enum mlxsw_sp_l3proto ol_proto);
  79
  80        /* Return a configuration for creating an overlay loopback RIF. */
  81        struct mlxsw_sp_rif_ipip_lb_config
  82        (*ol_loopback_config)(struct mlxsw_sp *mlxsw_sp,
  83                              const struct net_device *ol_dev);
  84
  85        int (*fib_entry_op)(struct mlxsw_sp *mlxsw_sp,
  86                            struct mlxsw_sp_ipip_entry *ipip_entry,
  87                            enum mlxsw_reg_ralue_op op,
  88                            u32 tunnel_index);
  89
  90        int (*ol_netdev_change)(struct mlxsw_sp *mlxsw_sp,
  91                                struct mlxsw_sp_ipip_entry *ipip_entry);
  92};
  93
  94extern const struct mlxsw_sp_ipip_ops *mlxsw_sp_ipip_ops_arr[];
  95
  96#endif /* _MLXSW_IPIP_H_*/
  97