1 | /* |
2 | * Copyright (c) 2014, Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
3 | * |
4 | * Permission to use, copy, modify, and/or distribute this software for any |
5 | * purpose with or without fee is hereby granted, provided that the above |
6 | * copyright notice and this permission notice appear in all copies. |
7 | * |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
15 | */ |
16 | |
17 | #ifndef DYNACK_H |
18 | #define DYNACK_H |
19 | |
20 | #define ATH_DYN_BUF 64 |
21 | |
22 | struct ath_hw; |
23 | struct ath_node; |
24 | |
25 | /** |
26 | * struct ath_dyn_rxbuf - ACK frame ring buffer |
27 | * @h_rb: ring buffer head |
28 | * @t_rb: ring buffer tail |
29 | * @tstamp: ACK RX timestamp buffer |
30 | */ |
31 | struct ath_dyn_rxbuf { |
32 | u16 h_rb, t_rb; |
33 | u32 tstamp[ATH_DYN_BUF]; |
34 | }; |
35 | |
36 | struct ts_info { |
37 | u32 tstamp; |
38 | u32 dur; |
39 | }; |
40 | |
41 | struct haddr_pair { |
42 | u8 h_dest[ETH_ALEN]; |
43 | u8 h_src[ETH_ALEN]; |
44 | }; |
45 | |
46 | /** |
47 | * struct ath_dyn_txbuf - tx frame ring buffer |
48 | * @h_rb: ring buffer head |
49 | * @t_rb: ring buffer tail |
50 | * @addr: dest/src address pair for a given TX frame |
51 | * @ts: TX frame timestamp buffer |
52 | */ |
53 | struct ath_dyn_txbuf { |
54 | u16 h_rb, t_rb; |
55 | struct haddr_pair addr[ATH_DYN_BUF]; |
56 | struct ts_info ts[ATH_DYN_BUF]; |
57 | }; |
58 | |
59 | /** |
60 | * struct ath_dynack - dynack processing info |
61 | * @enabled: enable dyn ack processing |
62 | * @ackto: current ACK timeout |
63 | * @lto: last ACK timeout computation |
64 | * @nodes: ath_node linked list |
65 | * @qlock: ts queue spinlock |
66 | * @ack_rbf: ACK ts ring buffer |
67 | * @st_rbf: status ts ring buffer |
68 | */ |
69 | struct ath_dynack { |
70 | bool enabled; |
71 | int ackto; |
72 | unsigned long lto; |
73 | |
74 | struct list_head nodes; |
75 | |
76 | /* protect timestamp queue access */ |
77 | spinlock_t qlock; |
78 | struct ath_dyn_rxbuf ack_rbf; |
79 | struct ath_dyn_txbuf st_rbf; |
80 | }; |
81 | |
82 | #if defined(CONFIG_ATH9K_DYNACK) |
83 | void ath_dynack_reset(struct ath_hw *ah); |
84 | void ath_dynack_node_init(struct ath_hw *ah, struct ath_node *an); |
85 | void ath_dynack_node_deinit(struct ath_hw *ah, struct ath_node *an); |
86 | void ath_dynack_init(struct ath_hw *ah); |
87 | void ath_dynack_sample_ack_ts(struct ath_hw *ah, struct sk_buff *skb, u32 ts); |
88 | void ath_dynack_sample_tx_ts(struct ath_hw *ah, struct sk_buff *skb, |
89 | struct ath_tx_status *ts, |
90 | struct ieee80211_sta *sta); |
91 | #else |
92 | static inline void ath_dynack_init(struct ath_hw *ah) {} |
93 | static inline void ath_dynack_node_init(struct ath_hw *ah, |
94 | struct ath_node *an) {} |
95 | static inline void ath_dynack_node_deinit(struct ath_hw *ah, |
96 | struct ath_node *an) {} |
97 | static inline void ath_dynack_sample_ack_ts(struct ath_hw *ah, |
98 | struct sk_buff *skb, u32 ts) {} |
99 | static inline void ath_dynack_sample_tx_ts(struct ath_hw *ah, |
100 | struct sk_buff *skb, |
101 | struct ath_tx_status *ts, |
102 | struct ieee80211_sta *sta) {} |
103 | #endif |
104 | |
105 | #endif /* DYNACK_H */ |
106 | |