rt2870_amrr.h

   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 _RT2870_AMRR_H_
  20 #define _RT2870_AMRR_H_
  21
  22 #define RT2870_AMRR_MIN_SUCCESS_THRESHOLD                                       1
  23 #define RT2870_AMRR_MAX_SUCCESS_THRESHOLD                                       15
  24
  25 struct rt2870_amrr
  26 {
  27         unsigned int min_success_threshold;
  28         unsigned int max_success_threshold;
  29
  30         int     interval;
  31 };
  32
  33 struct rt2870_amrr_node
  34 {
  35         struct rt2870_amrr *amrr;
  36
  37         int     ticks;
  38
  39         unsigned int txcnt;
  40         unsigned int success;
  41         unsigned int success_threshold;
  42         unsigned int recovery;
  43         unsigned int retrycnt;
  44 };
  45
  46 void rt2870_amrr_init(struct rt2870_amrr *amrr, struct ieee80211com *ic,
  47         int min_success_threshold, int max_success_threshold, int msecs);
  48
  49 void rt2870_amrr_cleanup(struct rt2870_amrr *amrr);
  50
  51 void rt2870_amrr_node_init(struct rt2870_amrr *amrr,
  52     struct rt2870_amrr_node *amrr_node, struct ieee80211_node *ni);
  53
  54 int rt2870_amrr_choose(struct ieee80211_node *ni,
  55         struct rt2870_amrr_node *amrr_node);
  56
  57 static __inline void rt2870_amrr_tx_complete(struct rt2870_amrr_node *amrr_node,
  58         int ok, int retries)
  59 {
  60         amrr_node->txcnt++;
  61
  62         if (ok)
  63                 amrr_node->success++;
  64
  65         amrr_node->retrycnt += retries;
  66 }
  67
  68 static __inline void rt2870_amrr_tx_update(struct rt2870_amrr_node *amrr_node,
  69         int txcnt, int success, int retrycnt)
  70 {
  71         amrr_node->txcnt = txcnt;
  72         amrr_node->success = success;
  73         amrr_node->retrycnt = retrycnt;
  74 }
  75
  76 #endif /* #ifndef _RT2870_AMRR_H_ */