if_ath_ioctl.c

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    1 /*-
    2  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer,
   10  *    without modification.
   11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   13  *    redistribution must be conditioned upon including a substantially
   14  *    similar Disclaimer requirement for further binary redistribution.
   15  *
   16  * NO WARRANTY
   17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   27  * THE POSSIBILITY OF SUCH DAMAGES.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 /*
   34  * Driver for the Atheros Wireless LAN controller.
   35  *
   36  * This software is derived from work of Atsushi Onoe; his contribution
   37  * is greatly appreciated.
   38  */
   39 
   40 #include "opt_inet.h"
   41 #include "opt_ath.h"
   42 /*
   43  * This is needed for register operations which are performed
   44  * by the driver - eg, calls to ath_hal_gettsf32().
   45  *
   46  * It's also required for any AH_DEBUG checks in here, eg the
   47  * module dependencies.
   48  */
   49 #include "opt_ah.h"
   50 #include "opt_wlan.h"
   51 
   52 #include <sys/param.h>
   53 #include <sys/systm.h>
   54 #include <sys/sysctl.h>
   55 #include <sys/mbuf.h>
   56 #include <sys/malloc.h>
   57 #include <sys/lock.h>
   58 #include <sys/mutex.h>
   59 #include <sys/kernel.h>
   60 #include <sys/socket.h>
   61 #include <sys/sockio.h>
   62 #include <sys/errno.h>
   63 #include <sys/callout.h>
   64 #include <sys/bus.h>
   65 #include <sys/endian.h>
   66 #include <sys/kthread.h>
   67 #include <sys/taskqueue.h>
   68 #include <sys/priv.h>
   69 #include <sys/module.h>
   70 #include <sys/ktr.h>
   71 #include <sys/smp.h>    /* for mp_ncpus */
   72 
   73 #include <machine/bus.h>
   74 
   75 #include <net/if.h>
   76 #include <net/if_var.h>
   77 #include <net/if_dl.h>
   78 #include <net/if_media.h>
   79 #include <net/if_types.h>
   80 #include <net/if_arp.h>
   81 #include <net/ethernet.h>
   82 #include <net/if_llc.h>
   83 
   84 #include <net80211/ieee80211_var.h>
   85 #include <net80211/ieee80211_regdomain.h>
   86 #ifdef IEEE80211_SUPPORT_SUPERG
   87 #include <net80211/ieee80211_superg.h>
   88 #endif
   89 #ifdef IEEE80211_SUPPORT_TDMA
   90 #include <net80211/ieee80211_tdma.h>
   91 #endif
   92 
   93 #include <net/bpf.h>
   94 
   95 #ifdef INET
   96 #include <netinet/in.h>
   97 #include <netinet/if_ether.h>
   98 #endif
   99 
  100 #include <dev/ath/if_athvar.h>
  101 #include <dev/ath/ath_hal/ah_devid.h>           /* XXX for softled */
  102 #include <dev/ath/ath_hal/ah_diagcodes.h>
  103 
  104 #include <dev/ath/if_ath_debug.h>
  105 #include <dev/ath/if_ath_misc.h>
  106 #include <dev/ath/if_ath_btcoex.h>
  107 #include <dev/ath/if_ath_spectral.h>
  108 #include <dev/ath/if_ath_lna_div.h>
  109 #include <dev/ath/if_athdfs.h>
  110 
  111 #ifdef  IEEE80211_SUPPORT_TDMA
  112 #include <dev/ath/if_ath_tdma.h>
  113 #endif
  114 
  115 #include <dev/ath/if_ath_ioctl.h>
  116 
  117 /*
  118  * ioctl() related pieces.
  119  *
  120  * Some subsystems (eg spectral, dfs) have their own ioctl method which
  121  * we call.
  122  */
  123 
  124 /*
  125  * Fetch the rate control statistics for the given node.
  126  */
  127 static int
  128 ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs)
  129 {
  130         struct ath_node *an;
  131         struct ieee80211com *ic = &sc->sc_ic;
  132         struct ieee80211_node *ni;
  133         int error = 0;
  134 
  135         /* Perform a lookup on the given node */
  136         ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr);
  137         if (ni == NULL) {
  138                 error = EINVAL;
  139                 goto bad;
  140         }
  141 
  142         /* Lock the ath_node */
  143         an = ATH_NODE(ni);
  144         ATH_NODE_LOCK(an);
  145 
  146         /* Fetch the rate control stats for this node */
  147         error = ath_rate_fetch_node_stats(sc, an, rs);
  148 
  149         /* No matter what happens here, just drop through */
  150 
  151         /* Unlock the ath_node */
  152         ATH_NODE_UNLOCK(an);
  153 
  154         /* Unref the node */
  155         ieee80211_node_decref(ni);
  156 
  157 bad:
  158         return (error);
  159 }
  160 
  161 #ifdef ATH_DIAGAPI
  162 /*
  163  * Diagnostic interface to the HAL.  This is used by various
  164  * tools to do things like retrieve register contents for
  165  * debugging.  The mechanism is intentionally opaque so that
  166  * it can change frequently w/o concern for compatibility.
  167  */
  168 static int
  169 ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad)
  170 {
  171         struct ath_hal *ah = sc->sc_ah;
  172         u_int id = ad->ad_id & ATH_DIAG_ID;
  173         void *indata = NULL;
  174         void *outdata = NULL;
  175         u_int32_t insize = ad->ad_in_size;
  176         u_int32_t outsize = ad->ad_out_size;
  177         int error = 0;
  178 
  179         if (ad->ad_id & ATH_DIAG_IN) {
  180                 /*
  181                  * Copy in data.
  182                  */
  183                 indata = malloc(insize, M_TEMP, M_NOWAIT);
  184                 if (indata == NULL) {
  185                         error = ENOMEM;
  186                         goto bad;
  187                 }
  188                 error = copyin(ad->ad_in_data, indata, insize);
  189                 if (error)
  190                         goto bad;
  191         }
  192         if (ad->ad_id & ATH_DIAG_DYN) {
  193                 /*
  194                  * Allocate a buffer for the results (otherwise the HAL
  195                  * returns a pointer to a buffer where we can read the
  196                  * results).  Note that we depend on the HAL leaving this
  197                  * pointer for us to use below in reclaiming the buffer;
  198                  * may want to be more defensive.
  199                  */
  200                 outdata = malloc(outsize, M_TEMP, M_NOWAIT | M_ZERO);
  201                 if (outdata == NULL) {
  202                         error = ENOMEM;
  203                         goto bad;
  204                 }
  205         }
  206 
  207         ATH_LOCK(sc);
  208         if (id != HAL_DIAG_REGS)
  209                 ath_power_set_power_state(sc, HAL_PM_AWAKE);
  210         ATH_UNLOCK(sc);
  211 
  212         if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) {
  213                 if (outsize < ad->ad_out_size)
  214                         ad->ad_out_size = outsize;
  215                 if (outdata != NULL)
  216                         error = copyout(outdata, ad->ad_out_data,
  217                                         ad->ad_out_size);
  218         } else {
  219                 error = EINVAL;
  220         }
  221 
  222         ATH_LOCK(sc);
  223         if (id != HAL_DIAG_REGS)
  224                 ath_power_restore_power_state(sc);
  225         ATH_UNLOCK(sc);
  226 
  227 bad:
  228         if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
  229                 free(indata, M_TEMP);
  230         if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
  231                 free(outdata, M_TEMP);
  232         return error;
  233 }
  234 #endif /* ATH_DIAGAPI */
  235 
  236 int
  237 ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
  238 {
  239         struct ifreq *ifr = data;
  240         struct ath_softc *sc = ic->ic_softc;
  241 
  242         switch (cmd) {
  243         case SIOCGATHSTATS: {
  244                 struct ieee80211vap *vap;
  245                 if_t ifp;
  246                 const HAL_RATE_TABLE *rt;
  247 
  248                 /* NB: embed these numbers to get a consistent view */
  249                 sc->sc_stats.ast_tx_packets = 0;
  250                 sc->sc_stats.ast_rx_packets = 0;
  251                 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
  252                         ifp = vap->iv_ifp;
  253                         sc->sc_stats.ast_tx_packets += ifp->if_get_counter(ifp,
  254                             IFCOUNTER_OPACKETS);
  255                         sc->sc_stats.ast_rx_packets += ifp->if_get_counter(ifp,
  256                             IFCOUNTER_IPACKETS);
  257                 }
  258                 sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi);
  259                 sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi);
  260 #ifdef IEEE80211_SUPPORT_TDMA
  261                 sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap);
  262                 sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam);
  263 #endif
  264                 rt = sc->sc_currates;
  265                 sc->sc_stats.ast_tx_rate =
  266                     rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC;
  267                 if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT)
  268                         sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS;
  269                 return copyout(&sc->sc_stats, ifr_data_get_ptr(ifr),
  270                     sizeof (sc->sc_stats));
  271         }
  272         case SIOCGATHAGSTATS:
  273                 return copyout(&sc->sc_aggr_stats, ifr_data_get_ptr(ifr),
  274                     sizeof (sc->sc_aggr_stats));
  275         case SIOCZATHSTATS: {
  276                 int error;
  277 
  278                 error = priv_check(curthread, PRIV_DRIVER);
  279                 if (error == 0) {
  280                         memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
  281                         memset(&sc->sc_aggr_stats, 0,
  282                             sizeof(sc->sc_aggr_stats));
  283                         memset(&sc->sc_intr_stats, 0,
  284                             sizeof(sc->sc_intr_stats));
  285                 }
  286                 return (error);
  287         }
  288 #ifdef ATH_DIAGAPI
  289         case SIOCGATHDIAG:
  290                 return (ath_ioctl_diag(sc, data));
  291         case SIOCGATHPHYERR:
  292                 return (ath_ioctl_phyerr(sc, data));
  293 #endif
  294         case SIOCGATHSPECTRAL:
  295                 return (ath_ioctl_spectral(sc, data));
  296         case SIOCGATHNODERATESTATS:
  297                 return (ath_ioctl_ratestats(sc, data));
  298         case SIOCGATHBTCOEX:
  299                 return (ath_btcoex_ioctl(sc, data));
  300         default:
  301                 /*
  302                  * This signals the net80211 layer that we didn't handle this
  303                  * ioctl.
  304                  */
  305                 return (ENOTTY);
  306         }
  307 }
Cache object: 2dd36374a17c17df89050fd624ec01e6
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FreeBSD/Linux Kernel Cross Reference sys/dev/ath/if_ath_ioctl.c

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sys/dev/ath/if_ath_ioctl.c
