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 <linux/debugfs.h> 8 9 #define MLX5_LAG_MAX_HASH_BUCKETS 16 10 #include "mlx5_core.h" 11 #include "mp.h" 12 #include "port_sel.h" 13 #include "mpesw.h" 14 15 enum { 16 MLX5_LAG_P1, 17 MLX5_LAG_P2, 18 }; 19 20 enum { 21 MLX5_LAG_FLAG_NDEVS_READY, 22 }; 23 24 enum { 25 MLX5_LAG_MODE_FLAG_HASH_BASED, 26 MLX5_LAG_MODE_FLAG_SHARED_FDB, 27 MLX5_LAG_MODE_FLAG_FDB_SEL_MODE_NATIVE, 28 }; 29 30 enum mlx5_lag_mode { 31 MLX5_LAG_MODE_NONE, 32 MLX5_LAG_MODE_ROCE, 33 MLX5_LAG_MODE_SRIOV, 34 MLX5_LAG_MODE_MULTIPATH, 35 MLX5_LAG_MODE_MPESW, 36 }; 37 38 struct lag_func { 39 struct mlx5_core_dev *dev; 40 struct net_device *netdev; 41 bool has_drop; 42 }; 43 44 /* Used for collection of netdev event info. */ 45 struct lag_tracker { 46 enum netdev_lag_tx_type tx_type; 47 struct netdev_lag_lower_state_info netdev_state[MLX5_MAX_PORTS]; 48 unsigned int is_bonded:1; 49 unsigned int has_inactive:1; 50 enum netdev_lag_hash hash_type; 51 }; 52 53 /* LAG data of a ConnectX card. 54 * It serves both its phys functions. 55 */ 56 struct mlx5_lag { 57 enum mlx5_lag_mode mode; 58 unsigned long mode_flags; 59 unsigned long state_flags; 60 u8 ports; 61 u8 buckets; 62 int mode_changes_in_progress; 63 u8 v2p_map[MLX5_MAX_PORTS * MLX5_LAG_MAX_HASH_BUCKETS]; 64 struct kref ref; 65 struct lag_func pf[MLX5_MAX_PORTS]; 66 struct lag_tracker tracker; 67 struct workqueue_struct *wq; 68 struct delayed_work bond_work; 69 struct notifier_block nb; 70 struct lag_mp lag_mp; 71 struct mlx5_lag_port_sel port_sel; 72 /* Protect lag fields/state changes */ 73 struct mutex lock; 74 struct lag_mpesw lag_mpesw; 75 }; 76 77 static inline struct mlx5_lag * 78 mlx5_lag_dev(struct mlx5_core_dev *dev) 79 { 80 return dev->priv.lag; 81 } 82 83 static inline bool 84 __mlx5_lag_is_active(struct mlx5_lag *ldev) 85 { 86 return ldev->mode != MLX5_LAG_MODE_NONE; 87 } 88 89 static inline bool 90 mlx5_lag_is_ready(struct mlx5_lag *ldev) 91 { 92 return test_bit(MLX5_LAG_FLAG_NDEVS_READY, &ldev->state_flags); 93 } 94 95 bool mlx5_lag_check_prereq(struct mlx5_lag *ldev); 96 void mlx5_modify_lag(struct mlx5_lag *ldev, 97 struct lag_tracker *tracker); 98 int mlx5_activate_lag(struct mlx5_lag *ldev, 99 struct lag_tracker *tracker, 100 enum mlx5_lag_mode mode, 101 bool shared_fdb); 102 int mlx5_lag_dev_get_netdev_idx(struct mlx5_lag *ldev, 103 struct net_device *ndev); 104 105 char *mlx5_get_str_port_sel_mode(enum mlx5_lag_mode mode, unsigned long flags); 106 void mlx5_infer_tx_enabled(struct lag_tracker *tracker, u8 num_ports, 107 u8 *ports, int *num_enabled); 108 109 void mlx5_ldev_add_debugfs(struct mlx5_core_dev *dev); 110 void mlx5_ldev_remove_debugfs(struct dentry *dbg); 111 void mlx5_disable_lag(struct mlx5_lag *ldev); 112 void mlx5_lag_remove_devices(struct mlx5_lag *ldev); 113 int mlx5_deactivate_lag(struct mlx5_lag *ldev); 114 void mlx5_lag_add_devices(struct mlx5_lag *ldev); 115 116 static inline bool mlx5_lag_is_supported(struct mlx5_core_dev *dev) 117 { 118 if (!MLX5_CAP_GEN(dev, vport_group_manager) || 119 !MLX5_CAP_GEN(dev, lag_master) || 120 MLX5_CAP_GEN(dev, num_lag_ports) < 2 || 121 MLX5_CAP_GEN(dev, num_lag_ports) > MLX5_MAX_PORTS) 122 return false; 123 return true; 124 } 125 126 #endif /* __MLX5_LAG_H__ */ 127