diff options
Diffstat (limited to 'sys/dev/ral/if_ralrate.h')
| -rw-r--r-- | sys/dev/ral/if_ralrate.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/sys/dev/ral/if_ralrate.h b/sys/dev/ral/if_ralrate.h deleted file mode 100644 index 50eee44..0000000 --- a/sys/dev/ral/if_ralrate.h +++ /dev/null @@ -1,98 +0,0 @@ -/* $FreeBSD$ */ -/* $NetBSD: ieee80211_rssadapt.h,v 1.4 2005/02/26 22:45:09 perry Exp $ */ -/*- - * Copyright (c) 2003, 2004 David Young. All rights reserved. - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * 3. The name of David Young may not be used to endorse or promote - * products derived from this software without specific prior - * written permission. - * - * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David - * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED - * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - */ - -/* Data-rate adaptation loosely based on "Link Adaptation Strategy - * for IEEE 802.11 WLAN via Received Signal Strength Measurement" - * by Javier del Prado Pavon and Sunghyun Choi. - */ - -/* Buckets for frames 0-128 bytes long, 129-1024, 1025-maximum. */ -#define RAL_RSSADAPT_BKTS 3 -#define RAL_RSSADAPT_BKT0 128 -#define RAL_RSSADAPT_BKTPOWER 3 /* 2**_BKTPOWER */ - -#define ral_rssadapt_thresh_new \ - (ral_rssadapt_thresh_denom - ral_rssadapt_thresh_old) -#define ral_rssadapt_decay_new \ - (ral_rssadapt_decay_denom - ral_rssadapt_decay_old) -#define ral_rssadapt_avgrssi_new \ - (ral_rssadapt_avgrssi_denom - ral_rssadapt_avgrssi_old) - -struct ral_rssadapt_expavgctl { - /* RSS threshold decay. */ - u_int rc_decay_denom; - u_int rc_decay_old; - /* RSS threshold update. */ - u_int rc_thresh_denom; - u_int rc_thresh_old; - /* RSS average update. */ - u_int rc_avgrssi_denom; - u_int rc_avgrssi_old; -}; - -struct ral_rssadapt { - /* exponential average RSSI << 8 */ - u_int16_t ra_avg_rssi; - /* Tx failures in this update interval */ - u_int32_t ra_nfail; - /* Tx successes in this update interval */ - u_int32_t ra_nok; - /* exponential average packets/second */ - u_int32_t ra_pktrate; - /* RSSI threshold for each Tx rate */ - u_int16_t ra_rate_thresh[RAL_RSSADAPT_BKTS] - [IEEE80211_RATE_SIZE]; - struct timeval ra_last_raise; - struct timeval ra_raise_interval; -}; - -/* Properties of a Tx packet, for link adaptation. */ -struct ral_rssdesc { - u_int id_len; /* Tx packet length */ - u_int id_rateidx; /* index into ni->ni_rates */ - struct ieee80211_node *id_node; /* destination STA MAC */ - u_int8_t id_rssi; /* destination STA avg RSS @ - * Tx time - */ -}; - -void ral_rssadapt_updatestats(struct ral_rssadapt *); -void ral_rssadapt_input(struct ieee80211com *, struct ieee80211_node *, - struct ral_rssadapt *, int); -void ral_rssadapt_lower_rate(struct ieee80211com *, - struct ieee80211_node *, struct ral_rssadapt *, - struct ral_rssdesc *); -void ral_rssadapt_raise_rate(struct ieee80211com *, - struct ral_rssadapt *, struct ral_rssdesc *); -int ral_rssadapt_choose(struct ral_rssadapt *, - struct ieee80211_rateset *, struct ieee80211_frame *, u_int, - const char *, int); |
