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Changes to L3 tunnel netdevices (through `ip tunnel change' as well as `ip link set') lead to NETDEV_CHANGE being generated on the tunnel device. Because what is relevant for the tunnel in question depends on the tunnel type, handling of the event is dispatched to the IPIP module through a newly-added interface mlxsw_sp_ipip_ops.ol_netdev_change(). IPIP tunnels now remember the last set of tunnel parameters in struct mlxsw_sp_ipip_entry.parms, and use it to figure out what exactly has changed. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
/*
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* drivers/net/ethernet/mellanox/mlxsw/spectrum_ipip.h
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* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2017 Petr Machata <petrm@mellanox.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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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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struct ip_tunnel_parm
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mlxsw_sp_ipip_netdev_parms(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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enum mlxsw_sp_ipip_type {
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MLXSW_SP_IPIP_TYPE_GRE4,
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MLXSW_SP_IPIP_TYPE_MAX,
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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 ip_tunnel_parm parms;
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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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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 (*can_offload)(const struct mlxsw_sp *mlxsw_sp,
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const struct net_device *ol_dev,
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enum mlxsw_sp_l3proto ol_proto);
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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 (*fib_entry_op)(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_ipip_entry *ipip_entry,
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enum mlxsw_reg_ralue_op op,
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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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};
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extern const struct mlxsw_sp_ipip_ops *mlxsw_sp_ipip_ops_arr[];
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#endif /* _MLXSW_IPIP_H_*/
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