linux/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c

// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2020 Mellanox Technologies Inc. All rights reserved. */

#include <linux/netdevice.h>
#include <linux/list.h>
#include <net/lag.h>

#include "mlx5_core.h"
#include "eswitch.h"
#include "esw/acl/ofld.h"
#include "en_rep.h"

struct mlx5e_rep_bond { … };

struct mlx5e_rep_bond_slave_entry { … };

struct mlx5e_rep_bond_metadata { … };

static struct mlx5e_rep_bond_metadata *
mlx5e_lookup_rep_bond_metadata(struct mlx5_rep_uplink_priv *uplink_priv,
			       const struct net_device *lag_dev)
{ … }

static struct mlx5e_rep_bond_slave_entry *
mlx5e_lookup_rep_bond_slave_entry(struct mlx5e_rep_bond_metadata *mdata,
				  const struct net_device *netdev)
{ … }

static void mlx5e_rep_bond_metadata_release(struct mlx5e_rep_bond_metadata *mdata)
{ … }

/* This must be called under rtnl_lock */
int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev,
			   struct net_device *lag_dev)
{ … }

/* This must be called under rtnl_lock */
void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw,
			    const struct net_device *netdev,
			    const struct net_device *lag_dev)
{ … }

static bool mlx5e_rep_is_lag_netdev(struct net_device *netdev)
{ … }

static void mlx5e_rep_changelowerstate_event(struct net_device *netdev, void *ptr)
{ … }

static void mlx5e_rep_changeupper_event(struct net_device *netdev, void *ptr)
{ … }

/* Bond device of representors and netdev events are used here in specific way
 * to support eswitch vports bonding and to perform failover of eswitch vport
 * by modifying the vport's egress acl of lower dev representors. Thus this
 * also change the traditional behavior of lower dev under bond device.
 * All non-representor netdevs or representors of other vendors as lower dev
 * of bond device are not supported.
 */
static int mlx5e_rep_esw_bond_netevent(struct notifier_block *nb,
				       unsigned long event, void *ptr)
{ … }

/* If HW support eswitch vports bonding, register a specific notifier to
 * handle it when two or more representors are bonded
 */
int mlx5e_rep_bond_init(struct mlx5e_rep_priv *rpriv)
{ … }

void mlx5e_rep_bond_cleanup(struct mlx5e_rep_priv *rpriv)
{ … }