mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 17:02:23 +07:00
c774d57fd4
Add dynamic ACK timeout estimation algorithm based on ACK frame RX timestamp, TX frame timestamp and frame duration. Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Tested-by: Philippe Duchein <wireless-dev@duchein.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2014, Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef DYNACK_H
|
|
#define DYNACK_H
|
|
|
|
#define ATH_DYN_BUF 64
|
|
|
|
struct ath_hw;
|
|
struct ath_node;
|
|
|
|
/**
|
|
* struct ath_dyn_rxbuf - ACK frame ring buffer
|
|
* @h_rb: ring buffer head
|
|
* @t_rb: ring buffer tail
|
|
* @tstamp: ACK RX timestamp buffer
|
|
*/
|
|
struct ath_dyn_rxbuf {
|
|
u16 h_rb, t_rb;
|
|
u32 tstamp[ATH_DYN_BUF];
|
|
};
|
|
|
|
struct ts_info {
|
|
u32 tstamp;
|
|
u32 dur;
|
|
};
|
|
|
|
struct haddr_pair {
|
|
u8 h_dest[ETH_ALEN];
|
|
u8 h_src[ETH_ALEN];
|
|
};
|
|
|
|
/**
|
|
* struct ath_dyn_txbuf - tx frame ring buffer
|
|
* @h_rb: ring buffer head
|
|
* @t_rb: ring buffer tail
|
|
* @addr: dest/src address pair for a given TX frame
|
|
* @ts: TX frame timestamp buffer
|
|
*/
|
|
struct ath_dyn_txbuf {
|
|
u16 h_rb, t_rb;
|
|
struct haddr_pair addr[ATH_DYN_BUF];
|
|
struct ts_info ts[ATH_DYN_BUF];
|
|
};
|
|
|
|
/**
|
|
* struct ath_dynack - dynack processing info
|
|
* @enabled: enable dyn ack processing
|
|
* @ackto: current ACK timeout
|
|
* @lto: last ACK timeout computation
|
|
* @nodes: ath_node linked list
|
|
* @qlock: ts queue spinlock
|
|
* @ack_rbf: ACK ts ring buffer
|
|
* @st_rbf: status ts ring buffer
|
|
*/
|
|
struct ath_dynack {
|
|
bool enabled;
|
|
int ackto;
|
|
unsigned long lto;
|
|
|
|
struct list_head nodes;
|
|
|
|
/* protect timestamp queue access */
|
|
spinlock_t qlock;
|
|
struct ath_dyn_rxbuf ack_rbf;
|
|
struct ath_dyn_txbuf st_rbf;
|
|
};
|
|
|
|
#if defined(CONFIG_ATH9K_DYNACK)
|
|
void ath_dynack_reset(struct ath_hw *ah);
|
|
void ath_dynack_node_init(struct ath_hw *ah, struct ath_node *an);
|
|
void ath_dynack_node_deinit(struct ath_hw *ah, struct ath_node *an);
|
|
void ath_dynack_init(struct ath_hw *ah);
|
|
void ath_dynack_sample_ack_ts(struct ath_hw *ah, struct sk_buff *skb, u32 ts);
|
|
void ath_dynack_sample_tx_ts(struct ath_hw *ah, struct sk_buff *skb,
|
|
struct ath_tx_status *ts);
|
|
#else
|
|
static inline void ath_dynack_init(struct ath_hw *ah) {}
|
|
static inline void ath_dynack_node_init(struct ath_hw *ah,
|
|
struct ath_node *an) {}
|
|
static inline void ath_dynack_node_deinit(struct ath_hw *ah,
|
|
struct ath_node *an) {}
|
|
static inline void ath_dynack_sample_ack_ts(struct ath_hw *ah,
|
|
struct sk_buff *skb, u32 ts) {}
|
|
static inline void ath_dynack_sample_tx_ts(struct ath_hw *ah,
|
|
struct sk_buff *skb,
|
|
struct ath_tx_status *ts) {}
|
|
#endif
|
|
|
|
#endif /* DYNACK_H */
|