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freebsd-dev/sys/dev/ath/if_ath_ioctl.c

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/*-
* Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Driver for the Atheros Wireless LAN controller.
*
* This software is derived from work of Atsushi Onoe; his contribution
* is greatly appreciated.
*/
#include "opt_inet.h"
#include "opt_ath.h"
/*
* This is needed for register operations which are performed
* by the driver - eg, calls to ath_hal_gettsf32().
*
* It's also required for any AH_DEBUG checks in here, eg the
* module dependencies.
*/
#include "opt_ah.h"
#include "opt_wlan.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/callout.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kthread.h>
#include <sys/taskqueue.h>
#include <sys/priv.h>
#include <sys/module.h>
#include <sys/ktr.h>
#include <sys/smp.h> /* for mp_ncpus */
#include <machine/bus.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_llc.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_regdomain.h>
#ifdef IEEE80211_SUPPORT_SUPERG
#include <net80211/ieee80211_superg.h>
#endif
#ifdef IEEE80211_SUPPORT_TDMA
#include <net80211/ieee80211_tdma.h>
#endif
#include <net/bpf.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <dev/ath/if_athvar.h>
#include <dev/ath/ath_hal/ah_devid.h> /* XXX for softled */
#include <dev/ath/ath_hal/ah_diagcodes.h>
#include <dev/ath/if_ath_debug.h>
#include <dev/ath/if_ath_misc.h>
#include <dev/ath/if_ath_btcoex.h>
#include <dev/ath/if_ath_spectral.h>
#include <dev/ath/if_ath_lna_div.h>
#include <dev/ath/if_athdfs.h>
#ifdef IEEE80211_SUPPORT_TDMA
#include <dev/ath/if_ath_tdma.h>
#endif
#include <dev/ath/if_ath_ioctl.h>
/*
* ioctl() related pieces.
*
* Some subsystems (eg spectral, dfs) have their own ioctl method which
* we call.
*/
/*
* Fetch the rate control statistics for the given node.
*/
static int
ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs)
{
struct ath_node *an;
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211_node *ni;
int error = 0;
/* Perform a lookup on the given node */
ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr);
if (ni == NULL) {
error = EINVAL;
goto bad;
}
/* Lock the ath_node */
an = ATH_NODE(ni);
ATH_NODE_LOCK(an);
/* Fetch the rate control stats for this node */
error = ath_rate_fetch_node_stats(sc, an, rs);
/* No matter what happens here, just drop through */
/* Unlock the ath_node */
ATH_NODE_UNLOCK(an);
/* Unref the node */
ieee80211_node_decref(ni);
bad:
return (error);
}
#ifdef ATH_DIAGAPI
/*
* Diagnostic interface to the HAL. This is used by various
* tools to do things like retrieve register contents for
* debugging. The mechanism is intentionally opaque so that
* it can change frequently w/o concern for compatibility.
*/
static int
ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad)
{
struct ath_hal *ah = sc->sc_ah;
u_int id = ad->ad_id & ATH_DIAG_ID;
void *indata = NULL;
void *outdata = NULL;
u_int32_t insize = ad->ad_in_size;
u_int32_t outsize = ad->ad_out_size;
int error = 0;
if (ad->ad_id & ATH_DIAG_IN) {
/*
* Copy in data.
*/
indata = malloc(insize, M_TEMP, M_NOWAIT);
if (indata == NULL) {
error = ENOMEM;
goto bad;
}
error = copyin(ad->ad_in_data, indata, insize);
if (error)
goto bad;
}
if (ad->ad_id & ATH_DIAG_DYN) {
/*
* Allocate a buffer for the results (otherwise the HAL
* returns a pointer to a buffer where we can read the
* results). Note that we depend on the HAL leaving this
* pointer for us to use below in reclaiming the buffer;
* may want to be more defensive.
*/
outdata = malloc(outsize, M_TEMP, M_NOWAIT);
if (outdata == NULL) {
error = ENOMEM;
goto bad;
}
}
ATH_LOCK(sc);
if (id != HAL_DIAG_REGS)
ath_power_set_power_state(sc, HAL_PM_AWAKE);
ATH_UNLOCK(sc);
if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) {
if (outsize < ad->ad_out_size)
ad->ad_out_size = outsize;
if (outdata != NULL)
error = copyout(outdata, ad->ad_out_data,
ad->ad_out_size);
} else {
error = EINVAL;
}
ATH_LOCK(sc);
if (id != HAL_DIAG_REGS)
ath_power_restore_power_state(sc);
ATH_UNLOCK(sc);
bad:
if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
free(indata, M_TEMP);
if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
free(outdata, M_TEMP);
return error;
}
#endif /* ATH_DIAGAPI */
int
ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
{
struct ifreq *ifr = data;
struct ath_softc *sc = ic->ic_softc;
switch (cmd) {
case SIOCGATHSTATS: {
struct ieee80211vap *vap;
struct ifnet *ifp;
const HAL_RATE_TABLE *rt;
/* NB: embed these numbers to get a consistent view */
sc->sc_stats.ast_tx_packets = 0;
sc->sc_stats.ast_rx_packets = 0;
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
ifp = vap->iv_ifp;
sc->sc_stats.ast_tx_packets += ifp->if_get_counter(ifp,
IFCOUNTER_OPACKETS);
sc->sc_stats.ast_rx_packets += ifp->if_get_counter(ifp,
IFCOUNTER_IPACKETS);
}
sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi);
sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi);
#ifdef IEEE80211_SUPPORT_TDMA
sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap);
sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam);
#endif
rt = sc->sc_currates;
sc->sc_stats.ast_tx_rate =
rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC;
if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT)
sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS;
return copyout(&sc->sc_stats,
ifr->ifr_data, sizeof (sc->sc_stats));
}
case SIOCGATHAGSTATS:
return copyout(&sc->sc_aggr_stats,
ifr->ifr_data, sizeof (sc->sc_aggr_stats));
case SIOCZATHSTATS: {
int error;
error = priv_check(curthread, PRIV_DRIVER);
if (error == 0) {
memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
memset(&sc->sc_aggr_stats, 0,
sizeof(sc->sc_aggr_stats));
memset(&sc->sc_intr_stats, 0,
sizeof(sc->sc_intr_stats));
}
return (error);
}
#ifdef ATH_DIAGAPI
case SIOCGATHDIAG:
return (ath_ioctl_diag(sc, data));
case SIOCGATHPHYERR:
return (ath_ioctl_phyerr(sc, data));
#endif
case SIOCGATHSPECTRAL:
return (ath_ioctl_spectral(sc, data));
case SIOCGATHNODERATESTATS:
return (ath_ioctl_ratestats(sc, data));
case SIOCGATHBTCOEX:
return (ath_btcoex_ioctl(sc, data));
default:
/*
* This signals the net80211 layer that we didn't handle this
* ioctl.
*/
return (ENOTTY);
}
}
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