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/*-
* Copyright (c) 2019, Mellanox Technologies, Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <linux/types.h>
#include <linux/etherdevice.h>
#include <dev/mlx5/mlx5_ifc.h>
#include <dev/mlx5/device.h>
#include <dev/mlx5/mpfs.h>
#include <dev/mlx5/driver.h>
#include "mlx5_core.h"
#define MPFS_LOCK(dev) spin_lock(&(dev)->mpfs.spinlock)
#define MPFS_UNLOCK(dev) spin_unlock(&(dev)->mpfs.spinlock)
int
mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u32 *p_index, const u8 *mac)
{
const u32 l2table_size = MIN(1U << MLX5_CAP_GEN(dev, log_max_l2_table),
MLX5_MPFS_TABLE_MAX);
u32 in[MLX5_ST_SZ_DW(set_l2_table_entry_in)] = {};
u32 out[MLX5_ST_SZ_DW(set_l2_table_entry_out)] = {};
u8 *in_mac_addr;
u32 index;
int err;
if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) {
*p_index = 0;
return (0);
}
MPFS_LOCK(dev);
index = find_first_zero_bit(dev->mpfs.bitmap, l2table_size);
if (index < l2table_size)
set_bit(index, dev->mpfs.bitmap);
MPFS_UNLOCK(dev);
if (index >= l2table_size)
return (-ENOMEM);
MLX5_SET(set_l2_table_entry_in, in, opcode, MLX5_CMD_OP_SET_L2_TABLE_ENTRY);
MLX5_SET(set_l2_table_entry_in, in, table_index, index);
in_mac_addr = MLX5_ADDR_OF(set_l2_table_entry_in, in, mac_address);
ether_addr_copy(&in_mac_addr[2], mac);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
if (err != 0) {
MPFS_LOCK(dev);
clear_bit(index, dev->mpfs.bitmap);
MPFS_UNLOCK(dev);
} else {
*p_index = index;
}
return (err);
}
int
mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u32 index)
{
u32 in[MLX5_ST_SZ_DW(delete_l2_table_entry_in)] = {};
u32 out[MLX5_ST_SZ_DW(delete_l2_table_entry_out)] = {};
int err;
if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) {
if (index != 0)
return (-EINVAL);
return (0);
}
MLX5_SET(delete_l2_table_entry_in, in, opcode, MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
MLX5_SET(delete_l2_table_entry_in, in, table_index, index);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
if (err == 0) {
MPFS_LOCK(dev);
clear_bit(index, dev->mpfs.bitmap);
MPFS_UNLOCK(dev);
}
return (err);
}
int
mlx5_mpfs_init(struct mlx5_core_dev *dev)
{
spin_lock_init(&dev->mpfs.spinlock);
bitmap_zero(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX);
return (0);
}
void
mlx5_mpfs_destroy(struct mlx5_core_dev *dev)
{
u32 num;
num = bitmap_weight(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX);
if (num != 0)
mlx5_core_err(dev, "Leaking %u MPFS MAC table entries\n", num);
spin_lock_destroy(&dev->mpfs.spinlock);
}
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