1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (c) 2025 Hisilicon Limited.
4 */
5
6#ifndef _HNS_ROCE_BOND_H
7#define _HNS_ROCE_BOND_H
8
9#include <linux/netdevice.h>
10#include <net/bonding.h>
11
12#define ROCE_BOND_FUNC_MAX 4
13#define ROCE_BOND_NUM_MAX 2
14
15#define BOND_ID(id) BIT(id)
16
17#define BOND_ERR_LOG(fmt, ...) \
18 pr_err("HNS RoCE Bonding: " fmt, ##__VA_ARGS__)
19
20enum {
21 BOND_MODE_1,
22 BOND_MODE_2_4,
23};
24
25enum hns_roce_bond_hashtype {
26 BOND_HASH_L2,
27 BOND_HASH_L34,
28 BOND_HASH_L23,
29};
30
31enum bond_support_type {
32 BOND_NOT_SUPPORT,
33 /*
34 * bond_grp already exists, but in the current
35 * conditions it's no longer supported
36 */
37 BOND_EXISTING_NOT_SUPPORT,
38 BOND_SUPPORT,
39};
40
41enum hns_roce_bond_state {
42 HNS_ROCE_BOND_NOT_ATTACHED,
43 HNS_ROCE_BOND_NOT_BONDED,
44 HNS_ROCE_BOND_IS_BONDED,
45 HNS_ROCE_BOND_SLAVE_CHANGE_NUM,
46 HNS_ROCE_BOND_SLAVE_CHANGESTATE,
47};
48
49enum hns_roce_bond_cmd_type {
50 HNS_ROCE_SET_BOND,
51 HNS_ROCE_CHANGE_BOND,
52 HNS_ROCE_CLEAR_BOND,
53};
54
55struct hns_roce_func_info {
56 struct net_device *net_dev;
57 struct hnae3_handle *handle;
58};
59
60struct hns_roce_bond_group {
61 struct net_device *upper_dev;
62 struct hns_roce_dev *main_hr_dev;
63 u8 active_slave_num;
64 u32 slave_map;
65 u32 active_slave_map;
66 u8 bond_id;
67 u8 bus_num;
68 struct hns_roce_func_info bond_func_info[ROCE_BOND_FUNC_MAX];
69 bool bond_ready;
70 enum hns_roce_bond_state bond_state;
71 enum netdev_lag_tx_type tx_type;
72 enum netdev_lag_hash hash_type;
73 struct mutex bond_mutex;
74 struct notifier_block bond_nb;
75 struct delayed_work bond_work;
76};
77
78struct hns_roce_die_info {
79 u8 bond_id_mask;
80 struct hns_roce_bond_group *bgrps[ROCE_BOND_NUM_MAX];
81 struct mutex die_mutex;
82 u8 suspend_cnt;
83};
84
85struct hns_roce_bond_group *hns_roce_get_bond_grp(struct net_device *net_dev,
86 u8 bus_num);
87int hns_roce_alloc_bond_grp(struct hns_roce_dev *hr_dev);
88void hns_roce_dealloc_bond_grp(void);
89void hns_roce_cleanup_bond(struct hns_roce_bond_group *bond_grp);
90bool hns_roce_bond_is_active(struct hns_roce_dev *hr_dev);
91int hns_roce_bond_init(struct hns_roce_dev *hr_dev);
92void hns_roce_bond_suspend(struct hnae3_handle *handle);
93void hns_roce_bond_resume(struct hnae3_handle *handle);
94
95#endif
96

source code of linux/drivers/infiniband/hw/hns/hns_roce_bond.h