| Lorenzo Bianconi | c774d57 | 2014-09-16 02:13:09 +0200 | [diff] [blame] | 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 */ |