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
 9enum ice_arfs_fltr_state {
10	ICE_ARFS_INACTIVE,
11	ICE_ARFS_ACTIVE,
12	ICE_ARFS_TODEL,
13};
14
15struct 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
31struct ice_arfs_entry_ptr {
32	struct ice_arfs_entry *arfs_entry;
33	struct hlist_node list_entry;
34};
35
36struct 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
44int
45ice_rx_flow_steer(struct net_device *netdev, const struct sk_buff *skb,
46		  u16 rxq_idx, u32 flow_id);
47void ice_clear_arfs(struct ice_vsi *vsi);
48void ice_free_cpu_rx_rmap(struct ice_vsi *vsi);
49void ice_init_arfs(struct ice_vsi *vsi);
50void ice_sync_arfs_fltrs(struct ice_pf *pf);
51int ice_set_cpu_rx_rmap(struct ice_vsi *vsi);
52void ice_remove_arfs(struct ice_pf *pf);
53void ice_rebuild_arfs(struct ice_pf *pf);
54bool
55ice_is_arfs_using_perfect_flow(struct ice_hw *hw,
56			       enum ice_fltr_ptype flow_type);
57#else
58static inline void ice_clear_arfs(struct ice_vsi *vsi) { }
59static inline void ice_free_cpu_rx_rmap(struct ice_vsi *vsi) { }
60static inline void ice_init_arfs(struct ice_vsi *vsi) { }
61static inline void ice_sync_arfs_fltrs(struct ice_pf *pf) { }
62static inline void ice_remove_arfs(struct ice_pf *pf) { }
63static inline void ice_rebuild_arfs(struct ice_pf *pf) { }
64
65static inline int ice_set_cpu_rx_rmap(struct ice_vsi __always_unused *vsi)
66{
67	return 0;
68}
69
70static inline int
71ice_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
78static inline bool
79ice_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_ */