2 * Copyright (c) 2019, Mellanox Technologies, Ltd. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <linux/types.h>
29 #include <linux/etherdevice.h>
31 #include <dev/mlx5/mlx5_ifc.h>
32 #include <dev/mlx5/device.h>
33 #include <dev/mlx5/mpfs.h>
34 #include <dev/mlx5/driver.h>
36 #include "mlx5_core.h"
38 #define MPFS_LOCK(dev) spin_lock(&(dev)->mpfs.spinlock)
39 #define MPFS_UNLOCK(dev) spin_unlock(&(dev)->mpfs.spinlock)
42 mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u32 *p_index, const u8 *mac)
44 const u32 l2table_size = MIN(1U << MLX5_CAP_GEN(dev, log_max_l2_table),
46 u32 in[MLX5_ST_SZ_DW(set_l2_table_entry_in)] = {};
47 u32 out[MLX5_ST_SZ_DW(set_l2_table_entry_out)] = {};
52 if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) {
58 index = find_first_zero_bit(dev->mpfs.bitmap, l2table_size);
59 if (index < l2table_size)
60 set_bit(index, dev->mpfs.bitmap);
63 if (index >= l2table_size)
66 MLX5_SET(set_l2_table_entry_in, in, opcode, MLX5_CMD_OP_SET_L2_TABLE_ENTRY);
67 MLX5_SET(set_l2_table_entry_in, in, table_index, index);
69 in_mac_addr = MLX5_ADDR_OF(set_l2_table_entry_in, in, mac_address);
70 ether_addr_copy(&in_mac_addr[2], mac);
72 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
75 clear_bit(index, dev->mpfs.bitmap);
84 mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u32 index)
86 u32 in[MLX5_ST_SZ_DW(delete_l2_table_entry_in)] = {};
87 u32 out[MLX5_ST_SZ_DW(delete_l2_table_entry_out)] = {};
90 if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) {
96 MLX5_SET(delete_l2_table_entry_in, in, opcode, MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
97 MLX5_SET(delete_l2_table_entry_in, in, table_index, index);
99 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
102 clear_bit(index, dev->mpfs.bitmap);
109 mlx5_mpfs_init(struct mlx5_core_dev *dev)
112 spin_lock_init(&dev->mpfs.spinlock);
113 bitmap_zero(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX);
118 mlx5_mpfs_destroy(struct mlx5_core_dev *dev)
122 num = bitmap_weight(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX);
124 mlx5_core_err(dev, "Leaking %u MPFS MAC table entries\n", num);
126 spin_lock_destroy(&dev->mpfs.spinlock);