1 /*- 2 * Copyright (c) 2019, Mellanox Technologies, Ltd. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 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. 12 * 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 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #include <linux/types.h> 29 #include <linux/etherdevice.h> 30 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> 35 36 #include "mlx5_core.h" 37 38 #define MPFS_LOCK(dev) spin_lock(&(dev)->mpfs.spinlock) 39 #define MPFS_UNLOCK(dev) spin_unlock(&(dev)->mpfs.spinlock) 40 41 int 42 mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u32 *p_index, const u8 *mac, 43 u8 vlan_valid, u16 vlan) 44 { 45 const u32 l2table_size = MIN(1U << MLX5_CAP_GEN(dev, log_max_l2_table), 46 MLX5_MPFS_TABLE_MAX); 47 u32 in[MLX5_ST_SZ_DW(set_l2_table_entry_in)] = {}; 48 u32 out[MLX5_ST_SZ_DW(set_l2_table_entry_out)] = {}; 49 u8 *in_mac_addr; 50 u32 index; 51 int err; 52 53 if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) { 54 *p_index = 0; 55 return (0); 56 } 57 58 MPFS_LOCK(dev); 59 index = find_first_zero_bit(dev->mpfs.bitmap, l2table_size); 60 if (index < l2table_size) 61 set_bit(index, dev->mpfs.bitmap); 62 MPFS_UNLOCK(dev); 63 64 if (index >= l2table_size) 65 return (-ENOMEM); 66 67 MLX5_SET(set_l2_table_entry_in, in, opcode, MLX5_CMD_OP_SET_L2_TABLE_ENTRY); 68 MLX5_SET(set_l2_table_entry_in, in, table_index, index); 69 MLX5_SET(set_l2_table_entry_in, in, vlan_valid, vlan_valid); 70 MLX5_SET(set_l2_table_entry_in, in, vlan, vlan); 71 72 in_mac_addr = MLX5_ADDR_OF(set_l2_table_entry_in, in, mac_address); 73 ether_addr_copy(&in_mac_addr[2], mac); 74 75 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 76 if (err != 0) { 77 MPFS_LOCK(dev); 78 clear_bit(index, dev->mpfs.bitmap); 79 MPFS_UNLOCK(dev); 80 } else { 81 *p_index = index; 82 } 83 return (err); 84 } 85 86 int 87 mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u32 index) 88 { 89 u32 in[MLX5_ST_SZ_DW(delete_l2_table_entry_in)] = {}; 90 u32 out[MLX5_ST_SZ_DW(delete_l2_table_entry_out)] = {}; 91 int err; 92 93 if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) { 94 if (index != 0) 95 return (-EINVAL); 96 return (0); 97 } 98 99 MLX5_SET(delete_l2_table_entry_in, in, opcode, MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY); 100 MLX5_SET(delete_l2_table_entry_in, in, table_index, index); 101 102 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 103 if (err == 0) { 104 MPFS_LOCK(dev); 105 clear_bit(index, dev->mpfs.bitmap); 106 MPFS_UNLOCK(dev); 107 } 108 return (err); 109 } 110 111 int 112 mlx5_mpfs_init(struct mlx5_core_dev *dev) 113 { 114 115 spin_lock_init(&dev->mpfs.spinlock); 116 bitmap_zero(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX); 117 return (0); 118 } 119 120 void 121 mlx5_mpfs_destroy(struct mlx5_core_dev *dev) 122 { 123 u32 num; 124 125 num = bitmap_weight(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX); 126 if (num != 0) 127 mlx5_core_err(dev, "Leaking %u MPFS MAC table entries\n", num); 128 129 spin_lock_destroy(&dev->mpfs.spinlock); 130 } 131