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c774d57f LB |
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 | #else | |
91 | static inline void ath_dynack_init(struct ath_hw *ah) {} | |
92 | static inline void ath_dynack_node_init(struct ath_hw *ah, | |
93 | struct ath_node *an) {} | |
94 | static inline void ath_dynack_node_deinit(struct ath_hw *ah, | |
95 | struct ath_node *an) {} | |
96 | static inline void ath_dynack_sample_ack_ts(struct ath_hw *ah, | |
97 | struct sk_buff *skb, u32 ts) {} | |
98 | static inline void ath_dynack_sample_tx_ts(struct ath_hw *ah, | |
99 | struct sk_buff *skb, | |
100 | struct ath_tx_status *ts) {} | |
101 | #endif | |
102 | ||
103 | #endif /* DYNACK_H */ |