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