diff options
| author | Vlad Buslov <vladbu@mellanox.com> | 2018-11-08 20:01:35 +0200 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2019-07-29 16:40:24 -0700 |
| commit | 226f2ca3075ab20abf69c68235e8ba9ac2dab596 (patch) | |
| tree | e77feef17d5c9515097d1c7d16c67a400838435f /drivers/net/ethernet/mellanox/mlx5/core/en_tc.h | |
| parent | 5a7e5bcb663d46d9cfe7d86d5a8ede91338275cb (diff) | |
net/mlx5e: Change flow flags type to unsigned long
To remove dependency on rtnl lock and allow concurrent modification of
'flags' field of tc flow structure, change flow flag type to unsigned long
and use atomic bit ops for reading and changing the flags. Implement
auxiliary functions for setting, resetting and getting specific flag, and
for checking most often used flag values.
Always set flags with smp_mb__before_atomic() to ensure that all
mlx5e_tc_flow are updated before concurrent readers can read new flags
value. Rearrange all code paths to actually set flow->rule[] pointers
before setting the OFFLOADED flag. On read side, use smp_mb__after_atomic()
when accessing flags to ensure that offload-related flow fields are only
read after the flags.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_tc.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_tc.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h index 3ab39275ca7d..1cb66bf76997 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h @@ -40,13 +40,15 @@ #ifdef CONFIG_MLX5_ESWITCH enum { - MLX5E_TC_INGRESS = BIT(0), - MLX5E_TC_EGRESS = BIT(1), - MLX5E_TC_NIC_OFFLOAD = BIT(2), - MLX5E_TC_ESW_OFFLOAD = BIT(3), - MLX5E_TC_LAST_EXPORTED_BIT = 3, + MLX5E_TC_FLAG_INGRESS_BIT, + MLX5E_TC_FLAG_EGRESS_BIT, + MLX5E_TC_FLAG_NIC_OFFLOAD_BIT, + MLX5E_TC_FLAG_ESW_OFFLOAD_BIT, + MLX5E_TC_FLAG_LAST_EXPORTED_BIT = MLX5E_TC_FLAG_ESW_OFFLOAD_BIT, }; +#define MLX5_TC_FLAG(flag) BIT(MLX5E_TC_FLAG_##flag##_BIT) + int mlx5e_tc_nic_init(struct mlx5e_priv *priv); void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv); @@ -54,12 +56,12 @@ int mlx5e_tc_esw_init(struct rhashtable *tc_ht); void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht); int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv, - struct flow_cls_offload *f, int flags); + struct flow_cls_offload *f, unsigned long flags); int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv, - struct flow_cls_offload *f, int flags); + struct flow_cls_offload *f, unsigned long flags); int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv, - struct flow_cls_offload *f, int flags); + struct flow_cls_offload *f, unsigned long flags); struct mlx5e_encap_entry; void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv, @@ -70,7 +72,7 @@ void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv, struct mlx5e_neigh_hash_entry; void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe); -int mlx5e_tc_num_filters(struct mlx5e_priv *priv, int flags); +int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags); void mlx5e_tc_reoffload_flows_work(struct work_struct *work); @@ -80,7 +82,11 @@ bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv, #else /* CONFIG_MLX5_ESWITCH */ static inline int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { return 0; } static inline void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv) {} -static inline int mlx5e_tc_num_filters(struct mlx5e_priv *priv, int flags) { return 0; } +static inline int mlx5e_tc_num_filters(struct mlx5e_priv *priv, + unsigned long flags) +{ + return 0; +} #endif #endif /* __MLX5_EN_TC_H__ */ |