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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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117aef12a7
Unlike IPv6 tunnels which use purely-kernel __ip6_tnl_parm structure to store params inside the kernel, IPv4 tunnel code uses the same ip_tunnel_parm which is being used to talk with the userspace. This makes it difficult to alter or add any fields or use a different format for whatever data. Define struct ip_tunnel_parm_kern, a 1:1 copy of ip_tunnel_parm for now, and use it throughout the code. Define the pieces, where the copy user <-> kernel happens, as standalone functions, and copy the data there field-by-field, so that the kernel-side structure could be easily modified later on and the users wouldn't have to care about this. Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
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/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
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#ifndef _MLXSW_IPIP_H_
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#define _MLXSW_IPIP_H_
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#include "spectrum_router.h"
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#include <net/ip_fib.h>
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#include <linux/if_tunnel.h>
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#include <net/ip6_tunnel.h>
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struct ip_tunnel_parm_kern
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mlxsw_sp_ipip_netdev_parms4(const struct net_device *ol_dev);
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struct __ip6_tnl_parm
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mlxsw_sp_ipip_netdev_parms6(const struct net_device *ol_dev);
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union mlxsw_sp_l3addr
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mlxsw_sp_ipip_netdev_saddr(enum mlxsw_sp_l3proto proto,
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const struct net_device *ol_dev);
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bool mlxsw_sp_l3addr_is_zero(union mlxsw_sp_l3addr addr);
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enum mlxsw_sp_ipip_type {
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MLXSW_SP_IPIP_TYPE_GRE4,
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MLXSW_SP_IPIP_TYPE_GRE6,
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MLXSW_SP_IPIP_TYPE_MAX,
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};
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struct mlxsw_sp_ipip_parms {
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enum mlxsw_sp_l3proto proto;
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union mlxsw_sp_l3addr saddr;
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union mlxsw_sp_l3addr daddr;
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int link;
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u32 ikey;
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u32 okey;
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};
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struct mlxsw_sp_ipip_entry {
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enum mlxsw_sp_ipip_type ipipt;
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struct net_device *ol_dev; /* Overlay. */
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struct mlxsw_sp_rif_ipip_lb *ol_lb;
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struct mlxsw_sp_fib_entry *decap_fib_entry;
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struct list_head ipip_list_node;
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struct mlxsw_sp_ipip_parms parms;
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u32 dip_kvdl_index;
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};
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struct mlxsw_sp_ipip_ops {
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int dev_type;
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enum mlxsw_sp_l3proto ul_proto; /* Underlay. */
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bool inc_parsing_depth;
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bool double_rif_entry;
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struct mlxsw_sp_ipip_parms
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(*parms_init)(const struct net_device *ol_dev);
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int (*nexthop_update)(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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bool force, char *ratr_pl);
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bool (*can_offload)(const struct mlxsw_sp *mlxsw_sp,
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const struct net_device *ol_dev);
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/* Return a configuration for creating an overlay loopback RIF. */
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struct mlxsw_sp_rif_ipip_lb_config
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(*ol_loopback_config)(struct mlxsw_sp *mlxsw_sp,
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const struct net_device *ol_dev);
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int (*decap_config)(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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u32 tunnel_index);
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int (*ol_netdev_change)(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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struct netlink_ext_ack *extack);
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int (*rem_ip_addr_set)(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_ipip_entry *ipip_entry);
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void (*rem_ip_addr_unset)(struct mlxsw_sp *mlxsw_sp,
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const struct mlxsw_sp_ipip_entry *ipip_entry);
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};
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extern const struct mlxsw_sp_ipip_ops *mlxsw_sp1_ipip_ops_arr[];
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extern const struct mlxsw_sp_ipip_ops *mlxsw_sp2_ipip_ops_arr[];
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#endif /* _MLXSW_IPIP_H_*/
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