| /* |
| * Copyright (c) 2017, Mellanox Technologies, Ltd. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - 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. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifndef __MLX5_MPFS_H__ |
| #define __MLX5_MPFS_H__ |
| |
| #include <linux/if_ether.h> |
| #include <linux/mlx5/device.h> |
| |
| /* L2 -mac address based- hash helpers */ |
| #define MLX5_L2_ADDR_HASH_SIZE (BIT(BITS_PER_BYTE)) |
| #define MLX5_L2_ADDR_HASH(addr) (addr[5]) |
| |
| struct l2addr_node { |
| struct hlist_node hlist; |
| u8 addr[ETH_ALEN]; |
| }; |
| |
| #define for_each_l2hash_node(hn, tmp, hash, i) \ |
| for (i = 0; i < MLX5_L2_ADDR_HASH_SIZE; i++) \ |
| hlist_for_each_entry_safe(hn, tmp, &(hash)[i], hlist) |
| |
| #define l2addr_hash_find(hash, mac, type) ({ \ |
| int ix = MLX5_L2_ADDR_HASH(mac); \ |
| bool found = false; \ |
| type *ptr = NULL; \ |
| \ |
| hlist_for_each_entry(ptr, &(hash)[ix], node.hlist) \ |
| if (ether_addr_equal(ptr->node.addr, mac)) {\ |
| found = true; \ |
| break; \ |
| } \ |
| if (!found) \ |
| ptr = NULL; \ |
| ptr; \ |
| }) |
| |
| #define l2addr_hash_add(hash, mac, type, gfp) ({ \ |
| int ix = MLX5_L2_ADDR_HASH(mac); \ |
| type *ptr = NULL; \ |
| \ |
| ptr = kzalloc(sizeof(type), gfp); \ |
| if (ptr) { \ |
| ether_addr_copy(ptr->node.addr, mac); \ |
| hlist_add_head(&ptr->node.hlist, &(hash)[ix]);\ |
| } \ |
| ptr; \ |
| }) |
| |
| #define l2addr_hash_del(ptr) ({ \ |
| hlist_del(&(ptr)->node.hlist); \ |
| kfree(ptr); \ |
| }) |
| |
| #ifdef CONFIG_MLX5_MPFS |
| int mlx5_mpfs_init(struct mlx5_core_dev *dev); |
| void mlx5_mpfs_cleanup(struct mlx5_core_dev *dev); |
| int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac); |
| int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac); |
| #else /* #ifndef CONFIG_MLX5_MPFS */ |
| static inline int mlx5_mpfs_init(struct mlx5_core_dev *dev) { return 0; } |
| static inline void mlx5_mpfs_cleanup(struct mlx5_core_dev *dev) {} |
| static inline int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac) { return 0; } |
| static inline int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac) { return 0; } |
| #endif |
| #endif |
