| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* Copyright (C) 2018-2020, Intel Corporation. */ |
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| 3 | |
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| 4 | #ifndef _ICE_ARFS_H_ |
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| 5 | #define _ICE_ARFS_H_ |
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| 6 | |
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| 7 | #include "ice_fdir.h" |
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| 8 | |
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| 9 | enum ice_arfs_fltr_state { |
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| 10 | ICE_ARFS_INACTIVE, |
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| 11 | ICE_ARFS_ACTIVE, |
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| 12 | ICE_ARFS_TODEL, |
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| 13 | }; |
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| 14 | |
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| 15 | struct ice_arfs_entry { |
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| 16 | struct ice_fdir_fltr fltr_info; |
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| 17 | struct hlist_node list_entry; |
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| 18 | u64 time_activated; /* only valid for UDP flows */ |
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| 19 | u32 flow_id; |
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| 20 | /* fltr_state = 0 - ICE_ARFS_INACTIVE: |
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| 21 | * filter needs to be updated or programmed in HW. |
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| 22 | * fltr_state = 1 - ICE_ARFS_ACTIVE: |
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| 23 | * filter is active and programmed in HW. |
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| 24 | * fltr_state = 2 - ICE_ARFS_TODEL: |
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| 25 | * filter has been deleted from HW and needs to be removed from |
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| 26 | * the aRFS hash table. |
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| 27 | */ |
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| 28 | u8 fltr_state; |
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| 29 | }; |
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| 30 | |
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| 31 | struct ice_arfs_entry_ptr { |
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| 32 | struct ice_arfs_entry *arfs_entry; |
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| 33 | struct hlist_node list_entry; |
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| 34 | }; |
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| 35 | |
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| 36 | struct ice_arfs_active_fltr_cntrs { |
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| 37 | atomic_t active_tcpv4_cnt; |
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| 38 | atomic_t active_tcpv6_cnt; |
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| 39 | atomic_t active_udpv4_cnt; |
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| 40 | atomic_t active_udpv6_cnt; |
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| 41 | }; |
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| 42 | |
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| 43 | #ifdef CONFIG_RFS_ACCEL |
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| 44 | int |
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| 45 | ice_rx_flow_steer(struct net_device *netdev, const struct sk_buff *skb, |
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| 46 | u16 rxq_idx, u32 flow_id); |
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| 47 | void ice_clear_arfs(struct ice_vsi *vsi); |
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| 48 | void ice_free_cpu_rx_rmap(struct ice_vsi *vsi); |
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| 49 | void ice_init_arfs(struct ice_vsi *vsi); |
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| 50 | void ice_sync_arfs_fltrs(struct ice_pf *pf); |
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| 51 | int ice_set_cpu_rx_rmap(struct ice_vsi *vsi); |
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| 52 | void ice_remove_arfs(struct ice_pf *pf); |
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| 53 | void ice_rebuild_arfs(struct ice_pf *pf); |
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| 54 | bool |
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| 55 | ice_is_arfs_using_perfect_flow(struct ice_hw *hw, |
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| 56 | enum ice_fltr_ptype flow_type); |
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| 57 | #else |
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| 58 | static inline void ice_clear_arfs(struct ice_vsi *vsi) { } |
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| 59 | static inline void ice_free_cpu_rx_rmap(struct ice_vsi *vsi) { } |
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| 60 | static inline void ice_init_arfs(struct ice_vsi *vsi) { } |
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| 61 | static inline void ice_sync_arfs_fltrs(struct ice_pf *pf) { } |
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| 62 | static inline void ice_remove_arfs(struct ice_pf *pf) { } |
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| 63 | static inline void ice_rebuild_arfs(struct ice_pf *pf) { } |
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| 64 | |
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| 65 | static inline int ice_set_cpu_rx_rmap(struct ice_vsi __always_unused *vsi) |
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| 66 | { |
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| 67 | return 0; |
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| 68 | } |
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| 69 | |
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| 70 | static inline int |
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| 71 | ice_rx_flow_steer(struct net_device __always_unused *netdev, |
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| 72 | const struct sk_buff __always_unused *skb, |
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| 73 | u16 __always_unused rxq_idx, u32 __always_unused flow_id) |
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| 74 | { |
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| 75 | return -EOPNOTSUPP; |
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| 76 | } |
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| 77 | |
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| 78 | static inline bool |
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| 79 | ice_is_arfs_using_perfect_flow(struct ice_hw __always_unused *hw, |
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| 80 | enum ice_fltr_ptype __always_unused flow_type) |
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| 81 | { |
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| 82 | return false; |
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| 83 | } |
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| 84 | #endif /* CONFIG_RFS_ACCEL */ |
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| 85 | #endif /* _ICE_ARFS_H_ */ |
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| 86 | |
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