73931706e7
* Implement a new ratectl method, which defaults to returning nothing; * Add a top level sysctl (net.wlan.X.rate_stats) to extract it; * Add ratectl info for the 'amrr' module. Tested: * urtwn(4), STA mode Differential Revision: https://reviews.freebsd.org/D5630
137 lines
4.0 KiB
C
137 lines
4.0 KiB
C
/*-
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* Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/sbuf.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/malloc.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/ethernet.h>
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#include <net/route.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_ratectl.h>
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static const struct ieee80211_ratectl *ratectls[IEEE80211_RATECTL_MAX];
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static const char *ratectl_modnames[IEEE80211_RATECTL_MAX] = {
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[IEEE80211_RATECTL_AMRR] = "wlan_amrr",
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[IEEE80211_RATECTL_RSSADAPT] = "wlan_rssadapt",
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[IEEE80211_RATECTL_ONOE] = "wlan_onoe",
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[IEEE80211_RATECTL_SAMPLE] = "wlan_sample",
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[IEEE80211_RATECTL_NONE] = "wlan_none",
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};
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MALLOC_DEFINE(M_80211_RATECTL, "80211ratectl", "802.11 rate control");
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void
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ieee80211_ratectl_register(int type, const struct ieee80211_ratectl *ratectl)
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{
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if (type >= IEEE80211_RATECTL_MAX)
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return;
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ratectls[type] = ratectl;
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}
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void
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ieee80211_ratectl_unregister(int type)
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{
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if (type >= IEEE80211_RATECTL_MAX)
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return;
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ratectls[type] = NULL;
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}
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static void
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ieee80211_ratectl_sysctl_stats_node_iter(void *arg, struct ieee80211_node *ni)
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{
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struct sbuf *sb = (struct sbuf *) arg;
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sbuf_printf(sb, "MAC: %6D\n", ni->ni_macaddr, ":");
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ieee80211_ratectl_node_stats(ni, sb);
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sbuf_printf(sb, "\n");
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}
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static int
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ieee80211_ratectl_sysctl_stats(SYSCTL_HANDLER_ARGS)
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{
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struct ieee80211vap *vap = arg1;
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struct ieee80211com *ic = vap->iv_ic;
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struct sbuf sb;
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int error;
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error = sysctl_wire_old_buffer(req, 0);
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if (error)
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return (error);
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sbuf_new_for_sysctl(&sb, NULL, 8, req);
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sbuf_clear_flags(&sb, SBUF_INCLUDENUL);
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IEEE80211_LOCK(ic);
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ieee80211_iterate_nodes(&ic->ic_sta,
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ieee80211_ratectl_sysctl_stats_node_iter,
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&sb);
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IEEE80211_UNLOCK(ic);
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error = sbuf_finish(&sb);
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sbuf_delete(&sb);
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return (error);
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}
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void
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ieee80211_ratectl_init(struct ieee80211vap *vap)
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{
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if (vap->iv_rate == ratectls[IEEE80211_RATECTL_NONE])
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ieee80211_ratectl_set(vap, IEEE80211_RATECTL_AMRR);
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vap->iv_rate->ir_init(vap);
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/* Attach generic stats sysctl */
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SYSCTL_ADD_PROC(vap->iv_sysctl, SYSCTL_CHILDREN(vap->iv_oid), OID_AUTO,
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"rate_stats", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, vap,
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0, ieee80211_ratectl_sysctl_stats, "A", "ratectl node stats");
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}
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void
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ieee80211_ratectl_set(struct ieee80211vap *vap, int type)
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{
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if (type >= IEEE80211_RATECTL_MAX)
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return;
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if (ratectls[type] == NULL) {
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ieee80211_load_module(ratectl_modnames[type]);
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if (ratectls[type] == NULL) {
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_RATECTL,
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"%s: unable to load algo %u, module %s\n",
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__func__, type, ratectl_modnames[type]);
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vap->iv_rate = ratectls[IEEE80211_RATECTL_NONE];
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return;
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}
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}
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vap->iv_rate = ratectls[type];
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}
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