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When handling mirroring to a gretap or ip6gretap netdevice in mlxsw, the underlay address (i.e. the remote address of the tunnel) may be routed to a bridge. In that case, look up the resolved neighbor Ethernet address in that bridge's FDB. Then configure the offload to direct the mirrored traffic to that port, possibly with tagging. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
/*
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* drivers/net/ethernet/mellanox/mlxsw/mlxsw_span.h
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* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
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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_SPECTRUM_SPAN_H
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#define _MLXSW_SPECTRUM_SPAN_H
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#include <linux/types.h>
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#include <linux/if_ether.h>
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#include "spectrum_router.h"
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struct mlxsw_sp;
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struct mlxsw_sp_port;
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enum mlxsw_sp_span_type {
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MLXSW_SP_SPAN_EGRESS,
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MLXSW_SP_SPAN_INGRESS
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};
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struct mlxsw_sp_span_inspected_port {
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struct list_head list;
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enum mlxsw_sp_span_type type;
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u8 local_port;
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/* Whether this is a directly bound mirror (port-to-port) or an ACL. */
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bool bound;
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};
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struct mlxsw_sp_span_parms {
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struct mlxsw_sp_port *dest_port; /* NULL for unoffloaded SPAN. */
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unsigned int ttl;
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unsigned char dmac[ETH_ALEN];
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unsigned char smac[ETH_ALEN];
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union mlxsw_sp_l3addr daddr;
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union mlxsw_sp_l3addr saddr;
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u16 vid;
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};
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struct mlxsw_sp_span_entry_ops;
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struct mlxsw_sp_span_entry {
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const struct net_device *to_dev;
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const struct mlxsw_sp_span_entry_ops *ops;
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struct mlxsw_sp_span_parms parms;
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struct list_head bound_ports_list;
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int ref_count;
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int id;
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};
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struct mlxsw_sp_span_entry_ops {
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bool (*can_handle)(const struct net_device *to_dev);
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int (*parms)(const struct net_device *to_dev,
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struct mlxsw_sp_span_parms *sparmsp);
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int (*configure)(struct mlxsw_sp_span_entry *span_entry,
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struct mlxsw_sp_span_parms sparms);
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void (*deconfigure)(struct mlxsw_sp_span_entry *span_entry);
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};
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int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp);
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void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp);
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void mlxsw_sp_span_respin(struct mlxsw_sp *mlxsw_sp);
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int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
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const struct net_device *to_dev,
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enum mlxsw_sp_span_type type,
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bool bind, int *p_span_id);
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void mlxsw_sp_span_mirror_del(struct mlxsw_sp_port *from, int span_id,
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enum mlxsw_sp_span_type type, bool bind);
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struct mlxsw_sp_span_entry *
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mlxsw_sp_span_entry_find_by_port(struct mlxsw_sp *mlxsw_sp,
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const struct net_device *to_dev);
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void mlxsw_sp_span_entry_invalidate(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_span_entry *span_entry);
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int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu);
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#endif
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