HardenedBSD/sys/net80211/ieee80211_ratectl_none.c
Andriy Voskoboinyk f6930bec33 net80211: ieee80211_ratectl*: switch to reusable KPI
Replace various void * / int argument combinations with common structures:
- ieee80211_ratectl_tx_status for *_tx_complete();
- ieee80211_ratectl_tx_stats for *_tx_update();

While here, improve amrr_tx_update() for a bit:
1. In case, if receiver is not known (typical for Ralink USB drivers),
refresh Tx rate for all nodes on the interface.
2. There was a misuse:
- otus(4) sends non-decreasing counters (as originally intended);
- but ural(4), rum(4) and run(4) are using 'read & clear' registers
to obtain statistics for some period of time (and those 'last period'
values are used as arguments for tx_update()). If arguments are not big
enough, they are just discarded after the next call.

Fix: move counting into *_tx_update()
(now otus(4) will zero out all node counters after every tx_update() call)

Tested with:
- Intel 3945BG (wpi(4)), STA mode.
- WUSB54GC (rum(4)), STA / HOSTAP mode.
- RTL8188EU (urtwn(4)), STA mode.

Reviewed by:	adrian
Differential Revision:	https://reviews.freebsd.org/D8037
2016-10-02 20:35:55 +00:00

117 lines
3.1 KiB
C

/*-
* Copyright (c) 2010 Bernhard Schmidt <bschmidt@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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_wlan.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_ratectl.h>
static void
none_init(struct ieee80211vap *vap)
{
}
static void
none_deinit(struct ieee80211vap *vap)
{
IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL);
}
static void
none_node_init(struct ieee80211_node *ni)
{
ni->ni_txrate = ni->ni_rates.rs_rates[0] & IEEE80211_RATE_VAL;
}
static void
none_node_deinit(struct ieee80211_node *ni)
{
}
static int
none_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg __unused)
{
int rix = 0;
ni->ni_txrate = ni->ni_rates.rs_rates[rix] & IEEE80211_RATE_VAL;
return rix;
}
static void
none_tx_complete(const struct ieee80211_node *ni,
const struct ieee80211_ratectl_tx_status *status)
{
}
static void
none_tx_update(struct ieee80211vap *vap,
struct ieee80211_ratectl_tx_stats *stats)
{
}
static void
none_setinterval(const struct ieee80211vap *vap, int msecs)
{
}
/* number of references from net80211 layer */
static int nrefs = 0;
static const struct ieee80211_ratectl none = {
.ir_name = "none",
.ir_attach = NULL,
.ir_detach = NULL,
.ir_init = none_init,
.ir_deinit = none_deinit,
.ir_node_init = none_node_init,
.ir_node_deinit = none_node_deinit,
.ir_rate = none_rate,
.ir_tx_complete = none_tx_complete,
.ir_tx_update = none_tx_update,
.ir_setinterval = none_setinterval,
};
IEEE80211_RATECTL_MODULE(ratectl_none, 1);
IEEE80211_RATECTL_ALG(none, IEEE80211_RATECTL_NONE, none);