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