/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*
* $FreeBSD$
*/
enum ieee80211_ratealgs {
IEEE80211_RATECTL_AMRR = 0,
IEEE80211_RATECTL_RSSADAPT = 1,
IEEE80211_RATECTL_ONOE = 2,
IEEE80211_RATECTL_SAMPLE = 3,
IEEE80211_RATECTL_NONE = 4,
IEEE80211_RATECTL_MAX
};
/* used fields for tx_complete() events */
#define IEEE80211_RATECTL_STATUS_PKTLEN 0x00000001
#define IEEE80211_RATECTL_STATUS_FINAL_RATE 0x00000002
#define IEEE80211_RATECTL_STATUS_SHORT_RETRY 0x00000004
#define IEEE80211_RATECTL_STATUS_LONG_RETRY 0x00000008
#define IEEE80211_RATECTL_STATUS_RSSI 0x00000010
/* failure reason */
enum ieee80211_ratectl_tx_fail_reason {
IEEE80211_RATECTL_TX_SUCCESS = 0,
IEEE80211_RATECTL_TX_FAIL_SHORT = 1, /* too many RTS retries */
IEEE80211_RATECTL_TX_FAIL_LONG = 2, /* too many retries */
IEEE80211_RATECTL_TX_FAIL_EXPIRED = 3, /* lifetime expired */
IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED = 4, /* another reason */
};
#define IEEE80211_RATECTL_TX_FAIL_MAX \
(IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED + 1)
struct ieee80211_ratectl_tx_status {
uint32_t flags; /* mark used fields */
enum ieee80211_ratectl_tx_fail_reason status; /* Tx status */
int pktlen; /* frame length */
int final_rate; /* transmission rate */
uint_fast8_t short_retries; /* RTS/CTS retries */
uint_fast8_t long_retries; /* ACK retries */
int8_t rssi; /* ACK RSSI */
uint8_t spare[15]; /* for future use */
};
/* used fields for tx_update() events */
#define IEEE80211_RATECTL_TX_STATS_NODE 0x00000001
#define IEEE80211_RATECTL_TX_STATS_RETRIES 0x00000002
struct ieee80211_ratectl_tx_stats {
uint32_t flags; /* mark used fields */
struct ieee80211_node *ni; /* receiver */
int nframes; /* transmitted frames */
int nsuccess; /* ACKed frames */
int nretries; /* number of retries */
};
struct ieee80211_ratectl {
const char *ir_name;
int (*ir_attach)(const struct ieee80211vap *);
void (*ir_detach)(const struct ieee80211vap *);
void (*ir_init)(struct ieee80211vap *);
void (*ir_deinit)(struct ieee80211vap *);
void (*ir_node_init)(struct ieee80211_node *);
void (*ir_node_deinit)(struct ieee80211_node *);
int (*ir_rate)(struct ieee80211_node *, void *, uint32_t);
void (*ir_tx_complete)(const struct ieee80211_node *,
const struct ieee80211_ratectl_tx_status *);
void (*ir_tx_update)(struct ieee80211vap *,
struct ieee80211_ratectl_tx_stats *);
void (*ir_setinterval)(const struct ieee80211vap *, int);
void (*ir_node_stats)(struct ieee80211_node *ni, struct sbuf *s);
};
void ieee80211_ratectl_register(int, const struct ieee80211_ratectl *);
void ieee80211_ratectl_unregister(int);
void ieee80211_ratectl_init(struct ieee80211vap *);
void ieee80211_ratectl_set(struct ieee80211vap *, int);
MALLOC_DECLARE(M_80211_RATECTL);
static __inline void
ieee80211_ratectl_deinit(struct ieee80211vap *vap)
{
vap->iv_rate->ir_deinit(vap);
}
static __inline void
ieee80211_ratectl_node_init(struct ieee80211_node *ni)
{
const struct ieee80211vap *vap = ni->ni_vap;
vap->iv_rate->ir_node_init(ni);
}
static __inline void
ieee80211_ratectl_node_deinit(struct ieee80211_node *ni)
{
const struct ieee80211vap *vap = ni->ni_vap;
vap->iv_rate->ir_node_deinit(ni);
}
static int __inline
ieee80211_ratectl_rate(struct ieee80211_node *ni, void *arg, uint32_t iarg)
{
const struct ieee80211vap *vap = ni->ni_vap;
return vap->iv_rate->ir_rate(ni, arg, iarg);
}
static __inline void
ieee80211_ratectl_tx_complete(const struct ieee80211_node *ni,
const struct ieee80211_ratectl_tx_status *status)
{
const struct ieee80211vap *vap = ni->ni_vap;
vap->iv_rate->ir_tx_complete(ni, status);
}
static __inline void
ieee80211_ratectl_tx_update(struct ieee80211vap *vap,
struct ieee80211_ratectl_tx_stats *stats)
{
if (vap->iv_rate->ir_tx_update == NULL)
return;
vap->iv_rate->ir_tx_update(vap, stats);
}
static __inline void
ieee80211_ratectl_setinterval(const struct ieee80211vap *vap, int msecs)
{
if (vap->iv_rate->ir_setinterval == NULL)
return;
vap->iv_rate->ir_setinterval(vap, msecs);
}
static __inline void
ieee80211_ratectl_node_stats(struct ieee80211_node *ni, struct sbuf *s)
{
const struct ieee80211vap *vap = ni->ni_vap;
if (vap->iv_rate->ir_node_stats == NULL)
return;
vap->iv_rate->ir_node_stats(ni, s);
}
