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
55#define ice_sync_arfs_fltrs(pf) do {} while (0)
56#define ice_init_arfs(vsi) do {} while (0)
57#define ice_clear_arfs(vsi) do {} while (0)
58#define ice_remove_arfs(pf) do {} while (0)
59#define ice_free_cpu_rx_rmap(vsi) do {} while (0)
60#define ice_rebuild_arfs(pf) do {} while (0)
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_ */