/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */

#ifndef _MLXSW_IPIP_H_
#define _MLXSW_IPIP_H_

#include "spectrum_router.h"
#include <net/ip_fib.h>
#include <linux/if_tunnel.h>
#include <net/ip6_tunnel.h>

struct ip_tunnel_parm_kern
mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev);
struct __ip6_tnl_parm
mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev);

union mlxsw_sp_l3addr
mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
                           const struct net_device *ol_dev);

bool mlxsw_sp_l3addr_is_zero(union mlxsw_sp_l3addr addr);

enum mlxsw_sp_ipip_type {
        MLXSW_SP_IPIP_TYPE_GRE4,
        MLXSW_SP_IPIP_TYPE_GRE6,
        MLXSW_SP_IPIP_TYPE_MAX,
};

struct mlxsw_sp_ipip_parms {
        enum mlxsw_sp_l3proto proto;
        union mlxsw_sp_l3addr saddr;
        union mlxsw_sp_l3addr daddr;
        int link;
        u32 ikey;
        u32 okey;
};

struct mlxsw_sp_ipip_entry {
        enum mlxsw_sp_ipip_type ipipt;
        struct net_device *ol_dev; /* Overlay. */
        struct mlxsw_sp_rif_ipip_lb *ol_lb;
        struct mlxsw_sp_fib_entry *decap_fib_entry;
        struct list_head ipip_list_node;
        struct mlxsw_sp_ipip_parms parms;
        u32 dip_kvdl_index;
};

struct mlxsw_sp_ipip_ops {
        int dev_type;
        enum mlxsw_sp_l3proto ul_proto; /* Underlay. */
        bool inc_parsing_depth;
        bool double_rif_entry;

        struct mlxsw_sp_ipip_parms
        (*parms_init)(const struct net_device *ol_dev);

        int (*nexthop_update)(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
                              struct mlxsw_sp_ipip_entry *ipip_entry,
                              bool force, char *ratr_pl);

        bool (*can_offload)(const struct mlxsw_sp *mlxsw_sp,
                            const struct net_device *ol_dev);

        /* Return a configuration for creating an overlay loopback RIF. */
        struct mlxsw_sp_rif_ipip_lb_config
        (*ol_loopback_config)(struct mlxsw_sp *mlxsw_sp,
                              const struct net_device *ol_dev);

        int (*decap_config)(struct mlxsw_sp *mlxsw_sp,
                            struct mlxsw_sp_ipip_entry *ipip_entry,
                            u32 tunnel_index);

        int (*ol_netdev_change)(struct mlxsw_sp *mlxsw_sp,
                                struct mlxsw_sp_ipip_entry *ipip_entry,
                                struct netlink_ext_ack *extack);
        int (*rem_ip_addr_set)(struct mlxsw_sp *mlxsw_sp,
                               struct mlxsw_sp_ipip_entry *ipip_entry);
        void (*rem_ip_addr_unset)(struct mlxsw_sp *mlxsw_sp,
                                  const struct mlxsw_sp_ipip_entry *ipip_entry);
};

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_*/