1
2/*-
3 * Copyright (c) 2009-2010 Alexander Egorenkov <egorenar@gmail.com>
4 * Copyright (c) 2009 Damien Bergamini <damien.bergamini@free.fr>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#ifndef _RT2860_AMRR_H_
20#define _RT2860_AMRR_H_
21
22#define RT2860_AMRR_MIN_SUCCESS_THRESHOLD	 				1
23#define RT2860_AMRR_MAX_SUCCESS_THRESHOLD					15
24
25struct rt2860_amrr
26{
27	int ntxpath;
28
29	unsigned int min_success_threshold;
30	unsigned int max_success_threshold;
31
32	int	interval;
33};
34
35struct rt2860_amrr_node
36{
37	struct rt2860_amrr *amrr;
38
39	int	rate_index;
40
41	int	ticks;
42
43	unsigned int txcnt;
44	unsigned int success;
45	unsigned int success_threshold;
46	unsigned int recovery;
47	unsigned int retrycnt;
48};
49
50void rt2860_amrr_init(struct rt2860_amrr *amrr, struct ieee80211vap *vap,
51	int ntxpath, int min_success_threshold, int max_success_threshold, int msecs);
52
53void rt2860_amrr_cleanup(struct rt2860_amrr *amrr);
54
55void rt2860_amrr_node_init(struct rt2860_amrr *amrr,
56    struct rt2860_amrr_node *amrr_node, struct ieee80211_node *ni);
57
58int rt2860_amrr_choose(struct ieee80211_node *ni,
59	struct rt2860_amrr_node *amrr_node);
60
61static __inline void rt2860_amrr_tx_complete(struct rt2860_amrr_node *amrr_node,
62	int ok, int retries)
63{
64	amrr_node->txcnt++;
65
66	if (ok)
67		amrr_node->success++;
68
69	amrr_node->retrycnt += retries;
70}
71
72static __inline void rt2860_amrr_tx_update(struct rt2860_amrr_node *amrr_node,
73	int txcnt, int success, int retrycnt)
74{
75	amrr_node->txcnt = txcnt;
76	amrr_node->success = success;
77	amrr_node->retrycnt = retrycnt;
78}
79
80#endif /* #ifndef _RT2860_AMRR_H_ */
81