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

   1/*
   2 * drivers/net/ethernet/mellanox/mlxsw/mlxsw_span.h
   3 * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
   4 *
   5 * Redistribution and use in source and binary forms, with or without
   6 * modification, are permitted provided that the following conditions are met:
   7 *
   8 * 1. Redistributions of source code must retain the above copyright
   9 *    notice, this list of conditions and the following disclaimer.
  10 * 2. Redistributions in binary form must reproduce the above copyright
  11 *    notice, this list of conditions and the following disclaimer in the
  12 *    documentation and/or other materials provided with the distribution.
  13 * 3. Neither the names of the copyright holders nor the names of its
  14 *    contributors may be used to endorse or promote products derived from
  15 *    this software without specific prior written permission.
  16 *
  17 * Alternatively, this software may be distributed under the terms of the
  18 * GNU General Public License ("GPL") version 2 as published by the Free
  19 * Software Foundation.
  20 *
  21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31 * POSSIBILITY OF SUCH DAMAGE.
  32 */
  33
  34#ifndef _MLXSW_SPECTRUM_SPAN_H
  35#define _MLXSW_SPECTRUM_SPAN_H
  36
  37#include <linux/types.h>
  38#include <linux/if_ether.h>
  39
  40#include "spectrum_router.h"
  41
  42struct mlxsw_sp;
  43struct mlxsw_sp_port;
  44
  45enum mlxsw_sp_span_type {
  46        MLXSW_SP_SPAN_EGRESS,
  47        MLXSW_SP_SPAN_INGRESS
  48};
  49
  50struct mlxsw_sp_span_inspected_port {
  51        struct list_head list;
  52        enum mlxsw_sp_span_type type;
  53        u8 local_port;
  54
  55        /* Whether this is a directly bound mirror (port-to-port) or an ACL. */
  56        bool bound;
  57};
  58
  59struct mlxsw_sp_span_parms {
  60        struct mlxsw_sp_port *dest_port; /* NULL for unoffloaded SPAN. */
  61        unsigned int ttl;
  62        unsigned char dmac[ETH_ALEN];
  63        unsigned char smac[ETH_ALEN];
  64        union mlxsw_sp_l3addr daddr;
  65        union mlxsw_sp_l3addr saddr;
  66        u16 vid;
  67};
  68
  69struct mlxsw_sp_span_entry_ops;
  70
  71struct mlxsw_sp_span_entry {
  72        const struct net_device *to_dev;
  73        const struct mlxsw_sp_span_entry_ops *ops;
  74        struct mlxsw_sp_span_parms parms;
  75        struct list_head bound_ports_list;
  76        int ref_count;
  77        int id;
  78};
  79
  80struct mlxsw_sp_span_entry_ops {
  81        bool (*can_handle)(const struct net_device *to_dev);
  82        int (*parms)(const struct net_device *to_dev,
  83                     struct mlxsw_sp_span_parms *sparmsp);
  84        int (*configure)(struct mlxsw_sp_span_entry *span_entry,
  85                         struct mlxsw_sp_span_parms sparms);
  86        void (*deconfigure)(struct mlxsw_sp_span_entry *span_entry);
  87};
  88
  89int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp);
  90void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp);
  91void mlxsw_sp_span_respin(struct mlxsw_sp *mlxsw_sp);
  92
  93int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
  94                             const struct net_device *to_dev,
  95                             enum mlxsw_sp_span_type type,
  96                             bool bind, int *p_span_id);
  97void mlxsw_sp_span_mirror_del(struct mlxsw_sp_port *from, int span_id,
  98                              enum mlxsw_sp_span_type type, bool bind);
  99struct mlxsw_sp_span_entry *
 100mlxsw_sp_span_entry_find_by_port(struct mlxsw_sp *mlxsw_sp,
 101                                 const struct net_device *to_dev);
 102
 103void mlxsw_sp_span_entry_invalidate(struct mlxsw_sp *mlxsw_sp,
 104                                    struct mlxsw_sp_span_entry *span_entry);
 105
 106int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu);
 107
 108#endif
 109