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 "opt_rss.h" 29 #include "opt_ratelimit.h" 30 31 #include <linux/types.h> 32 #include <linux/etherdevice.h> 33 34 #include <dev/mlx5/mlx5_ifc.h> 35 #include <dev/mlx5/device.h> 36 #include <dev/mlx5/mpfs.h> 37 #include <dev/mlx5/driver.h> 38 39 #include <dev/mlx5/mlx5_core/mlx5_core.h> 40 41 #define MPFS_LOCK(dev) spin_lock(&(dev)->mpfs.spinlock) 42 #define MPFS_UNLOCK(dev) spin_unlock(&(dev)->mpfs.spinlock) 43 44 int 45 mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u32 *p_index, const u8 *mac, 46 u8 vlan_valid, u16 vlan) 47 { 48 const u32 l2table_size = MIN(1U << MLX5_CAP_GEN(dev, log_max_l2_table), 49 MLX5_MPFS_TABLE_MAX); 50 u32 in[MLX5_ST_SZ_DW(set_l2_table_entry_in)] = {}; 51 u32 out[MLX5_ST_SZ_DW(set_l2_table_entry_out)] = {}; 52 u8 *in_mac_addr; 53 u32 index; 54 int err; 55 56 if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) { 57 *p_index = 0; 58 return (0); 59 } 60 61 MPFS_LOCK(dev); 62 index = find_first_zero_bit(dev->mpfs.bitmap, l2table_size); 63 if (index < l2table_size) 64 set_bit(index, dev->mpfs.bitmap); 65 MPFS_UNLOCK(dev); 66 67 if (index >= l2table_size) 68 return (-ENOMEM); 69 70 MLX5_SET(set_l2_table_entry_in, in, opcode, MLX5_CMD_OP_SET_L2_TABLE_ENTRY); 71 MLX5_SET(set_l2_table_entry_in, in, table_index, index); 72 MLX5_SET(set_l2_table_entry_in, in, vlan_valid, vlan_valid); 73 MLX5_SET(set_l2_table_entry_in, in, vlan, vlan); 74 75 in_mac_addr = MLX5_ADDR_OF(set_l2_table_entry_in, in, mac_address); 76 ether_addr_copy(&in_mac_addr[2], mac); 77 78 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 79 if (err != 0) { 80 MPFS_LOCK(dev); 81 clear_bit(index, dev->mpfs.bitmap); 82 MPFS_UNLOCK(dev); 83 } else { 84 *p_index = index; 85 } 86 return (err); 87 } 88 89 int 90 mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u32 index) 91 { 92 u32 in[MLX5_ST_SZ_DW(delete_l2_table_entry_in)] = {}; 93 u32 out[MLX5_ST_SZ_DW(delete_l2_table_entry_out)] = {}; 94 int err; 95 96 if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) { 97 if (index != 0) 98 return (-EINVAL); 99 return (0); 100 } 101 102 MLX5_SET(delete_l2_table_entry_in, in, opcode, MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY); 103 MLX5_SET(delete_l2_table_entry_in, in, table_index, index); 104 105 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); 106 if (err == 0) { 107 MPFS_LOCK(dev); 108 clear_bit(index, dev->mpfs.bitmap); 109 MPFS_UNLOCK(dev); 110 } 111 return (err); 112 } 113 114 int 115 mlx5_mpfs_init(struct mlx5_core_dev *dev) 116 { 117 118 spin_lock_init(&dev->mpfs.spinlock); 119 bitmap_zero(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX); 120 return (0); 121 } 122 123 void 124 mlx5_mpfs_destroy(struct mlx5_core_dev *dev) 125 { 126 u32 num; 127 128 num = bitmap_weight(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX); 129 if (num != 0) 130 mlx5_core_err(dev, "Leaking %u MPFS MAC table entries\n", num); 131 132 spin_lock_destroy(&dev->mpfs.spinlock); 133 } 134