LXR linux/drivers/net/ethernet/intel/ice/ice

   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_
   6enum ice_arfs_fltr_state {
   7        ICE_ARFS_INACTIVE,
   8        ICE_ARFS_ACTIVE,
   9        ICE_ARFS_TODEL,
  10};
  11
  12struct 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
  28struct ice_arfs_entry_ptr {
  29        struct ice_arfs_entry *arfs_entry;
  30        struct hlist_node list_entry;
  31};
  32
  33struct 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
  41int
  42ice_rx_flow_steer(struct net_device *netdev, const struct sk_buff *skb,
  43                  u16 rxq_idx, u32 flow_id);
  44void ice_clear_arfs(struct ice_vsi *vsi);
  45void ice_free_cpu_rx_rmap(struct ice_vsi *vsi);
  46void ice_init_arfs(struct ice_vsi *vsi);
  47void ice_sync_arfs_fltrs(struct ice_pf *pf);
  48int ice_set_cpu_rx_rmap(struct ice_vsi *vsi);
  49void ice_remove_arfs(struct ice_pf *pf);
  50void ice_rebuild_arfs(struct ice_pf *pf);
  51bool
  52ice_is_arfs_using_perfect_flow(struct ice_hw *hw,
  53                               enum ice_fltr_ptype flow_type);
  54#else
  55static inline void ice_clear_arfs(struct ice_vsi *vsi) { }
  56static inline void ice_free_cpu_rx_rmap(struct ice_vsi *vsi) { }
  57static inline void ice_init_arfs(struct ice_vsi *vsi) { }
  58static inline void ice_sync_arfs_fltrs(struct ice_pf *pf) { }
  59static inline void ice_remove_arfs(struct ice_pf *pf) { }
  60static inline void ice_rebuild_arfs(struct ice_pf *pf) { }
  61
  62static inline int ice_set_cpu_rx_rmap(struct ice_vsi __always_unused *vsi)
  63{
  64        return 0;
  65}
  66
  67static inline int
  68ice_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
  75static inline bool
  76ice_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_ */
  83