drivers/net/ethernet/intel/ice/ice_arfs.h

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