1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2019 Mellanox Technologies. */
3 
4 #ifndef __MLX5_LAG_H__
5 #define __MLX5_LAG_H__
6 
7 #include "mlx5_core.h"
8 #include "mp.h"
9 #include "port_sel.h"
10 
11 enum {
12 	MLX5_LAG_P1,
13 	MLX5_LAG_P2,
14 };
15 
16 enum {
17 	MLX5_LAG_FLAG_ROCE   = 1 << 0,
18 	MLX5_LAG_FLAG_SRIOV  = 1 << 1,
19 	MLX5_LAG_FLAG_MULTIPATH = 1 << 2,
20 	MLX5_LAG_FLAG_READY = 1 << 3,
21 	MLX5_LAG_FLAG_HASH_BASED = 1 << 4,
22 };
23 
24 #define MLX5_LAG_MODE_FLAGS (MLX5_LAG_FLAG_ROCE | MLX5_LAG_FLAG_SRIOV |\
25 			     MLX5_LAG_FLAG_MULTIPATH | \
26 			     MLX5_LAG_FLAG_HASH_BASED)
27 
28 struct lag_func {
29 	struct mlx5_core_dev *dev;
30 	struct net_device    *netdev;
31 	bool has_drop;
32 };
33 
34 /* Used for collection of netdev event info. */
35 struct lag_tracker {
36 	enum   netdev_lag_tx_type           tx_type;
37 	struct netdev_lag_lower_state_info  netdev_state[MLX5_MAX_PORTS];
38 	unsigned int is_bonded:1;
39 	unsigned int has_inactive:1;
40 	enum netdev_lag_hash hash_type;
41 };
42 
43 /* LAG data of a ConnectX card.
44  * It serves both its phys functions.
45  */
46 struct mlx5_lag {
47 	u8                        flags;
48 	int			  mode_changes_in_progress;
49 	bool			  shared_fdb;
50 	u8                        v2p_map[MLX5_MAX_PORTS];
51 	struct kref               ref;
52 	struct lag_func           pf[MLX5_MAX_PORTS];
53 	struct lag_tracker        tracker;
54 	struct workqueue_struct   *wq;
55 	struct delayed_work       bond_work;
56 	struct notifier_block     nb;
57 	struct lag_mp             lag_mp;
58 	struct mlx5_lag_port_sel  port_sel;
59 };
60 
61 static inline struct mlx5_lag *
62 mlx5_lag_dev(struct mlx5_core_dev *dev)
63 {
64 	return dev->priv.lag;
65 }
66 
67 static inline bool
68 __mlx5_lag_is_active(struct mlx5_lag *ldev)
69 {
70 	return !!(ldev->flags & MLX5_LAG_MODE_FLAGS);
71 }
72 
73 static inline bool
74 mlx5_lag_is_ready(struct mlx5_lag *ldev)
75 {
76 	return ldev->flags & MLX5_LAG_FLAG_READY;
77 }
78 
79 void mlx5_modify_lag(struct mlx5_lag *ldev,
80 		     struct lag_tracker *tracker);
81 int mlx5_activate_lag(struct mlx5_lag *ldev,
82 		      struct lag_tracker *tracker,
83 		      u8 flags,
84 		      bool shared_fdb);
85 int mlx5_lag_dev_get_netdev_idx(struct mlx5_lag *ldev,
86 				struct net_device *ndev);
87 
88 #endif /* __MLX5_LAG_H__ */
89