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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
#include <linux/netdevice.h>
#include <net/nexthop.h>
#include "lag/lag.h"
#include "eswitch.h"
#include "lib/mlx5.h"
void mlx5_mpesw_work(struct work_struct *work)
{
struct mlx5_lag *ldev = container_of(work, struct mlx5_lag, mpesw_work);
mutex_lock(&ldev->lock);
mlx5_disable_lag(ldev);
mutex_unlock(&ldev->lock);
}
static void mlx5_lag_disable_mpesw(struct mlx5_core_dev *dev)
{
struct mlx5_lag *ldev = dev->priv.lag;
if (!queue_work(ldev->wq, &ldev->mpesw_work))
mlx5_core_warn(dev, "failed to queue work\n");
}
void mlx5_lag_del_mpesw_rule(struct mlx5_core_dev *dev)
{
struct mlx5_lag *ldev = dev->priv.lag;
if (!ldev)
return;
mutex_lock(&ldev->lock);
if (!atomic_dec_return(&ldev->lag_mpesw.mpesw_rule_count) &&
ldev->mode == MLX5_LAG_MODE_MPESW)
mlx5_lag_disable_mpesw(dev);
mutex_unlock(&ldev->lock);
}
int mlx5_lag_add_mpesw_rule(struct mlx5_core_dev *dev)
{
struct mlx5_lag *ldev = dev->priv.lag;
int err = 0;
if (!ldev)
return 0;
mutex_lock(&ldev->lock);
if (atomic_add_return(1, &ldev->lag_mpesw.mpesw_rule_count) != 1)
goto out;
if (ldev->mode != MLX5_LAG_MODE_NONE) {
err = -EINVAL;
goto out;
}
err = mlx5_activate_lag(ldev, NULL, MLX5_LAG_MODE_MPESW, false);
if (err)
mlx5_core_warn(dev, "Failed to create LAG in MPESW mode (%d)\n", err);
out:
mutex_unlock(&ldev->lock);
return err;
}
int mlx5_lag_do_mirred(struct mlx5_core_dev *mdev, struct net_device *out_dev)
{
struct mlx5_lag *ldev = mdev->priv.lag;
if (!netif_is_bond_master(out_dev) || !ldev)
return 0;
mutex_lock(&ldev->lock);
if (ldev->mode == MLX5_LAG_MODE_MPESW) {
mutex_unlock(&ldev->lock);
return -EOPNOTSUPP;
}
mutex_unlock(&ldev->lock);
return 0;
}
bool mlx5_lag_mpesw_is_activated(struct mlx5_core_dev *dev)
{
bool ret;
ret = dev->priv.lag && dev->priv.lag->mode == MLX5_LAG_MODE_MPESW;
return ret;
}
void mlx5_lag_mpesw_init(struct mlx5_lag *ldev)
{
INIT_WORK(&ldev->mpesw_work, mlx5_mpesw_work);
atomic_set(&ldev->lag_mpesw.mpesw_rule_count, 0);
}
void mlx5_lag_mpesw_cleanup(struct mlx5_lag *ldev)
{
cancel_delayed_work_sync(&ldev->bond_work);
}
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