The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_ioctl.c

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    1 /*-
    2  * Copyright (c) 2001 Atsushi Onoe
    3  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/10.2/sys/net80211/ieee80211_ioctl.c 252369 2013-06-29 06:36:42Z rpaulo $");
   29 
   30 /*
   31  * IEEE 802.11 ioctl support (FreeBSD-specific)
   32  */
   33 
   34 #include "opt_inet.h"
   35 #include "opt_ipx.h"
   36 #include "opt_wlan.h"
   37 
   38 #include <sys/endian.h>
   39 #include <sys/param.h>
   40 #include <sys/kernel.h>
   41 #include <sys/priv.h>
   42 #include <sys/socket.h>
   43 #include <sys/sockio.h>
   44 #include <sys/systm.h>
   45  
   46 #include <net/if.h>
   47 #include <net/if_dl.h>
   48 #include <net/if_media.h>
   49 #include <net/ethernet.h>
   50 
   51 #ifdef INET
   52 #include <netinet/in.h>
   53 #include <netinet/if_ether.h>
   54 #endif
   55 
   56 #ifdef IPX
   57 #include <netipx/ipx.h>
   58 #include <netipx/ipx_if.h>
   59 #endif
   60 
   61 #include <net80211/ieee80211_var.h>
   62 #include <net80211/ieee80211_ioctl.h>
   63 #include <net80211/ieee80211_regdomain.h>
   64 #include <net80211/ieee80211_input.h>
   65 
   66 #define IS_UP_AUTO(_vap) \
   67         (IFNET_IS_UP_RUNNING((_vap)->iv_ifp) && \
   68          (_vap)->iv_roaming == IEEE80211_ROAMING_AUTO)
   69 
   70 static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
   71 static struct ieee80211_channel *findchannel(struct ieee80211com *,
   72                 int ieee, int mode);
   73 static int ieee80211_scanreq(struct ieee80211vap *,
   74                 struct ieee80211_scan_req *);
   75 
   76 static __noinline int
   77 ieee80211_ioctl_getkey(struct ieee80211vap *vap, struct ieee80211req *ireq)
   78 {
   79         struct ieee80211com *ic = vap->iv_ic;
   80         struct ieee80211_node *ni;
   81         struct ieee80211req_key ik;
   82         struct ieee80211_key *wk;
   83         const struct ieee80211_cipher *cip;
   84         u_int kid;
   85         int error;
   86 
   87         if (ireq->i_len != sizeof(ik))
   88                 return EINVAL;
   89         error = copyin(ireq->i_data, &ik, sizeof(ik));
   90         if (error)
   91                 return error;
   92         kid = ik.ik_keyix;
   93         if (kid == IEEE80211_KEYIX_NONE) {
   94                 ni = ieee80211_find_vap_node(&ic->ic_sta, vap, ik.ik_macaddr);
   95                 if (ni == NULL)
   96                         return ENOENT;
   97                 wk = &ni->ni_ucastkey;
   98         } else {
   99                 if (kid >= IEEE80211_WEP_NKID)
  100                         return EINVAL;
  101                 wk = &vap->iv_nw_keys[kid];
  102                 IEEE80211_ADDR_COPY(&ik.ik_macaddr, vap->iv_bss->ni_macaddr);
  103                 ni = NULL;
  104         }
  105         cip = wk->wk_cipher;
  106         ik.ik_type = cip->ic_cipher;
  107         ik.ik_keylen = wk->wk_keylen;
  108         ik.ik_flags = wk->wk_flags & (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV);
  109         if (wk->wk_keyix == vap->iv_def_txkey)
  110                 ik.ik_flags |= IEEE80211_KEY_DEFAULT;
  111         if (priv_check(curthread, PRIV_NET80211_GETKEY) == 0) {
  112                 /* NB: only root can read key data */
  113                 ik.ik_keyrsc = wk->wk_keyrsc[IEEE80211_NONQOS_TID];
  114                 ik.ik_keytsc = wk->wk_keytsc;
  115                 memcpy(ik.ik_keydata, wk->wk_key, wk->wk_keylen);
  116                 if (cip->ic_cipher == IEEE80211_CIPHER_TKIP) {
  117                         memcpy(ik.ik_keydata+wk->wk_keylen,
  118                                 wk->wk_key + IEEE80211_KEYBUF_SIZE,
  119                                 IEEE80211_MICBUF_SIZE);
  120                         ik.ik_keylen += IEEE80211_MICBUF_SIZE;
  121                 }
  122         } else {
  123                 ik.ik_keyrsc = 0;
  124                 ik.ik_keytsc = 0;
  125                 memset(ik.ik_keydata, 0, sizeof(ik.ik_keydata));
  126         }
  127         if (ni != NULL)
  128                 ieee80211_free_node(ni);
  129         return copyout(&ik, ireq->i_data, sizeof(ik));
  130 }
  131 
  132 static __noinline int
  133 ieee80211_ioctl_getchanlist(struct ieee80211vap *vap, struct ieee80211req *ireq)
  134 {
  135         struct ieee80211com *ic = vap->iv_ic;
  136 
  137         if (sizeof(ic->ic_chan_active) < ireq->i_len)
  138                 ireq->i_len = sizeof(ic->ic_chan_active);
  139         return copyout(&ic->ic_chan_active, ireq->i_data, ireq->i_len);
  140 }
  141 
  142 static __noinline int
  143 ieee80211_ioctl_getchaninfo(struct ieee80211vap *vap, struct ieee80211req *ireq)
  144 {
  145         struct ieee80211com *ic = vap->iv_ic;
  146         uint32_t space;
  147 
  148         space = __offsetof(struct ieee80211req_chaninfo,
  149                         ic_chans[ic->ic_nchans]);
  150         if (space > ireq->i_len)
  151                 space = ireq->i_len;
  152         /* XXX assumes compatible layout */
  153         return copyout(&ic->ic_nchans, ireq->i_data, space);
  154 }
  155 
  156 static __noinline int
  157 ieee80211_ioctl_getwpaie(struct ieee80211vap *vap,
  158         struct ieee80211req *ireq, int req)
  159 {
  160         struct ieee80211_node *ni;
  161         struct ieee80211req_wpaie2 wpaie;
  162         int error;
  163 
  164         if (ireq->i_len < IEEE80211_ADDR_LEN)
  165                 return EINVAL;
  166         error = copyin(ireq->i_data, wpaie.wpa_macaddr, IEEE80211_ADDR_LEN);
  167         if (error != 0)
  168                 return error;
  169         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, wpaie.wpa_macaddr);
  170         if (ni == NULL)
  171                 return ENOENT;
  172         memset(wpaie.wpa_ie, 0, sizeof(wpaie.wpa_ie));
  173         if (ni->ni_ies.wpa_ie != NULL) {
  174                 int ielen = ni->ni_ies.wpa_ie[1] + 2;
  175                 if (ielen > sizeof(wpaie.wpa_ie))
  176                         ielen = sizeof(wpaie.wpa_ie);
  177                 memcpy(wpaie.wpa_ie, ni->ni_ies.wpa_ie, ielen);
  178         }
  179         if (req == IEEE80211_IOC_WPAIE2) {
  180                 memset(wpaie.rsn_ie, 0, sizeof(wpaie.rsn_ie));
  181                 if (ni->ni_ies.rsn_ie != NULL) {
  182                         int ielen = ni->ni_ies.rsn_ie[1] + 2;
  183                         if (ielen > sizeof(wpaie.rsn_ie))
  184                                 ielen = sizeof(wpaie.rsn_ie);
  185                         memcpy(wpaie.rsn_ie, ni->ni_ies.rsn_ie, ielen);
  186                 }
  187                 if (ireq->i_len > sizeof(struct ieee80211req_wpaie2))
  188                         ireq->i_len = sizeof(struct ieee80211req_wpaie2);
  189         } else {
  190                 /* compatibility op, may overwrite wpa ie */
  191                 /* XXX check ic_flags? */
  192                 if (ni->ni_ies.rsn_ie != NULL) {
  193                         int ielen = ni->ni_ies.rsn_ie[1] + 2;
  194                         if (ielen > sizeof(wpaie.wpa_ie))
  195                                 ielen = sizeof(wpaie.wpa_ie);
  196                         memcpy(wpaie.wpa_ie, ni->ni_ies.rsn_ie, ielen);
  197                 }
  198                 if (ireq->i_len > sizeof(struct ieee80211req_wpaie))
  199                         ireq->i_len = sizeof(struct ieee80211req_wpaie);
  200         }
  201         ieee80211_free_node(ni);
  202         return copyout(&wpaie, ireq->i_data, ireq->i_len);
  203 }
  204 
  205 static __noinline int
  206 ieee80211_ioctl_getstastats(struct ieee80211vap *vap, struct ieee80211req *ireq)
  207 {
  208         struct ieee80211_node *ni;
  209         uint8_t macaddr[IEEE80211_ADDR_LEN];
  210         const size_t off = __offsetof(struct ieee80211req_sta_stats, is_stats);
  211         int error;
  212 
  213         if (ireq->i_len < off)
  214                 return EINVAL;
  215         error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
  216         if (error != 0)
  217                 return error;
  218         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr);
  219         if (ni == NULL)
  220                 return ENOENT;
  221         if (ireq->i_len > sizeof(struct ieee80211req_sta_stats))
  222                 ireq->i_len = sizeof(struct ieee80211req_sta_stats);
  223         /* NB: copy out only the statistics */
  224         error = copyout(&ni->ni_stats, (uint8_t *) ireq->i_data + off,
  225                         ireq->i_len - off);
  226         ieee80211_free_node(ni);
  227         return error;
  228 }
  229 
  230 struct scanreq {
  231         struct ieee80211req_scan_result *sr;
  232         size_t space;
  233 };
  234 
  235 static size_t
  236 scan_space(const struct ieee80211_scan_entry *se, int *ielen)
  237 {
  238         size_t len;
  239 
  240         *ielen = se->se_ies.len;
  241         /*
  242          * NB: ie's can be no more than 255 bytes and the max 802.11
  243          * packet is <3Kbytes so we are sure this doesn't overflow
  244          * 16-bits; if this is a concern we can drop the ie's.
  245          */
  246         len = sizeof(struct ieee80211req_scan_result) + se->se_ssid[1] +
  247             se->se_meshid[1] + *ielen;
  248         return roundup(len, sizeof(uint32_t));
  249 }
  250 
  251 static void
  252 get_scan_space(void *arg, const struct ieee80211_scan_entry *se)
  253 {
  254         struct scanreq *req = arg;
  255         int ielen;
  256 
  257         req->space += scan_space(se, &ielen);
  258 }
  259 
  260 static __noinline void
  261 get_scan_result(void *arg, const struct ieee80211_scan_entry *se)
  262 {
  263         struct scanreq *req = arg;
  264         struct ieee80211req_scan_result *sr;
  265         int ielen, len, nr, nxr;
  266         uint8_t *cp;
  267 
  268         len = scan_space(se, &ielen);
  269         if (len > req->space)
  270                 return;
  271 
  272         sr = req->sr;
  273         KASSERT(len <= 65535 && ielen <= 65535,
  274             ("len %u ssid %u ie %u", len, se->se_ssid[1], ielen));
  275         sr->isr_len = len;
  276         sr->isr_ie_off = sizeof(struct ieee80211req_scan_result);
  277         sr->isr_ie_len = ielen;
  278         sr->isr_freq = se->se_chan->ic_freq;
  279         sr->isr_flags = se->se_chan->ic_flags;
  280         sr->isr_rssi = se->se_rssi;
  281         sr->isr_noise = se->se_noise;
  282         sr->isr_intval = se->se_intval;
  283         sr->isr_capinfo = se->se_capinfo;
  284         sr->isr_erp = se->se_erp;
  285         IEEE80211_ADDR_COPY(sr->isr_bssid, se->se_bssid);
  286         nr = min(se->se_rates[1], IEEE80211_RATE_MAXSIZE);
  287         memcpy(sr->isr_rates, se->se_rates+2, nr);
  288         nxr = min(se->se_xrates[1], IEEE80211_RATE_MAXSIZE - nr);
  289         memcpy(sr->isr_rates+nr, se->se_xrates+2, nxr);
  290         sr->isr_nrates = nr + nxr;
  291 
  292         /* copy SSID */
  293         sr->isr_ssid_len = se->se_ssid[1];
  294         cp = ((uint8_t *)sr) + sr->isr_ie_off;
  295         memcpy(cp, se->se_ssid+2, sr->isr_ssid_len);
  296 
  297         /* copy mesh id */
  298         cp += sr->isr_ssid_len;
  299         sr->isr_meshid_len = se->se_meshid[1];
  300         memcpy(cp, se->se_meshid+2, sr->isr_meshid_len);
  301         cp += sr->isr_meshid_len;
  302 
  303         if (ielen)
  304                 memcpy(cp, se->se_ies.data, ielen);
  305 
  306         req->space -= len;
  307         req->sr = (struct ieee80211req_scan_result *)(((uint8_t *)sr) + len);
  308 }
  309 
  310 static __noinline int
  311 ieee80211_ioctl_getscanresults(struct ieee80211vap *vap,
  312         struct ieee80211req *ireq)
  313 {
  314         struct scanreq req;
  315         int error;
  316 
  317         if (ireq->i_len < sizeof(struct scanreq))
  318                 return EFAULT;
  319 
  320         error = 0;
  321         req.space = 0;
  322         ieee80211_scan_iterate(vap, get_scan_space, &req);
  323         if (req.space > ireq->i_len)
  324                 req.space = ireq->i_len;
  325         if (req.space > 0) {
  326                 uint32_t space;
  327                 void *p;
  328 
  329                 space = req.space;
  330                 /* XXX M_WAITOK after driver lock released */
  331                 p = malloc(space, M_TEMP, M_NOWAIT | M_ZERO);
  332                 if (p == NULL)
  333                         return ENOMEM;
  334                 req.sr = p;
  335                 ieee80211_scan_iterate(vap, get_scan_result, &req);
  336                 ireq->i_len = space - req.space;
  337                 error = copyout(p, ireq->i_data, ireq->i_len);
  338                 free(p, M_TEMP);
  339         } else
  340                 ireq->i_len = 0;
  341 
  342         return error;
  343 }
  344 
  345 struct stainforeq {
  346         struct ieee80211vap *vap;
  347         struct ieee80211req_sta_info *si;
  348         size_t  space;
  349 };
  350 
  351 static size_t
  352 sta_space(const struct ieee80211_node *ni, size_t *ielen)
  353 {
  354         *ielen = ni->ni_ies.len;
  355         return roundup(sizeof(struct ieee80211req_sta_info) + *ielen,
  356                       sizeof(uint32_t));
  357 }
  358 
  359 static void
  360 get_sta_space(void *arg, struct ieee80211_node *ni)
  361 {
  362         struct stainforeq *req = arg;
  363         size_t ielen;
  364 
  365         if (req->vap != ni->ni_vap)
  366                 return;
  367         if (ni->ni_vap->iv_opmode == IEEE80211_M_HOSTAP &&
  368             ni->ni_associd == 0)        /* only associated stations */
  369                 return;
  370         req->space += sta_space(ni, &ielen);
  371 }
  372 
  373 static __noinline void
  374 get_sta_info(void *arg, struct ieee80211_node *ni)
  375 {
  376         struct stainforeq *req = arg;
  377         struct ieee80211vap *vap = ni->ni_vap;
  378         struct ieee80211req_sta_info *si;
  379         size_t ielen, len;
  380         uint8_t *cp;
  381 
  382         if (req->vap != ni->ni_vap)
  383                 return;
  384         if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
  385             ni->ni_associd == 0)        /* only associated stations */
  386                 return;
  387         if (ni->ni_chan == IEEE80211_CHAN_ANYC) /* XXX bogus entry */
  388                 return;
  389         len = sta_space(ni, &ielen);
  390         if (len > req->space)
  391                 return;
  392         si = req->si;
  393         si->isi_len = len;
  394         si->isi_ie_off = sizeof(struct ieee80211req_sta_info);
  395         si->isi_ie_len = ielen;
  396         si->isi_freq = ni->ni_chan->ic_freq;
  397         si->isi_flags = ni->ni_chan->ic_flags;
  398         si->isi_state = ni->ni_flags;
  399         si->isi_authmode = ni->ni_authmode;
  400         vap->iv_ic->ic_node_getsignal(ni, &si->isi_rssi, &si->isi_noise);
  401         vap->iv_ic->ic_node_getmimoinfo(ni, &si->isi_mimo);
  402         si->isi_capinfo = ni->ni_capinfo;
  403         si->isi_erp = ni->ni_erp;
  404         IEEE80211_ADDR_COPY(si->isi_macaddr, ni->ni_macaddr);
  405         si->isi_nrates = ni->ni_rates.rs_nrates;
  406         if (si->isi_nrates > 15)
  407                 si->isi_nrates = 15;
  408         memcpy(si->isi_rates, ni->ni_rates.rs_rates, si->isi_nrates);
  409         si->isi_txrate = ni->ni_txrate;
  410         if (si->isi_txrate & IEEE80211_RATE_MCS) {
  411                 const struct ieee80211_mcs_rates *mcs =
  412                     &ieee80211_htrates[ni->ni_txrate &~ IEEE80211_RATE_MCS];
  413                 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
  414                         if (ni->ni_flags & IEEE80211_NODE_SGI40)
  415                                 si->isi_txmbps = mcs->ht40_rate_800ns;
  416                         else
  417                                 si->isi_txmbps = mcs->ht40_rate_400ns;
  418                 } else {
  419                         if (ni->ni_flags & IEEE80211_NODE_SGI20)
  420                                 si->isi_txmbps = mcs->ht20_rate_800ns;
  421                         else
  422                                 si->isi_txmbps = mcs->ht20_rate_400ns;
  423                 }
  424         } else
  425                 si->isi_txmbps = si->isi_txrate;
  426         si->isi_associd = ni->ni_associd;
  427         si->isi_txpower = ni->ni_txpower;
  428         si->isi_vlan = ni->ni_vlan;
  429         if (ni->ni_flags & IEEE80211_NODE_QOS) {
  430                 memcpy(si->isi_txseqs, ni->ni_txseqs, sizeof(ni->ni_txseqs));
  431                 memcpy(si->isi_rxseqs, ni->ni_rxseqs, sizeof(ni->ni_rxseqs));
  432         } else {
  433                 si->isi_txseqs[0] = ni->ni_txseqs[IEEE80211_NONQOS_TID];
  434                 si->isi_rxseqs[0] = ni->ni_rxseqs[IEEE80211_NONQOS_TID];
  435         }
  436         /* NB: leave all cases in case we relax ni_associd == 0 check */
  437         if (ieee80211_node_is_authorized(ni))
  438                 si->isi_inact = vap->iv_inact_run;
  439         else if (ni->ni_associd != 0 ||
  440             (vap->iv_opmode == IEEE80211_M_WDS &&
  441              (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY)))
  442                 si->isi_inact = vap->iv_inact_auth;
  443         else
  444                 si->isi_inact = vap->iv_inact_init;
  445         si->isi_inact = (si->isi_inact - ni->ni_inact) * IEEE80211_INACT_WAIT;
  446         si->isi_localid = ni->ni_mllid;
  447         si->isi_peerid = ni->ni_mlpid;
  448         si->isi_peerstate = ni->ni_mlstate;
  449 
  450         if (ielen) {
  451                 cp = ((uint8_t *)si) + si->isi_ie_off;
  452                 memcpy(cp, ni->ni_ies.data, ielen);
  453         }
  454 
  455         req->si = (struct ieee80211req_sta_info *)(((uint8_t *)si) + len);
  456         req->space -= len;
  457 }
  458 
  459 static __noinline int
  460 getstainfo_common(struct ieee80211vap *vap, struct ieee80211req *ireq,
  461         struct ieee80211_node *ni, size_t off)
  462 {
  463         struct ieee80211com *ic = vap->iv_ic;
  464         struct stainforeq req;
  465         size_t space;
  466         void *p;
  467         int error;
  468 
  469         error = 0;
  470         req.space = 0;
  471         req.vap = vap;
  472         if (ni == NULL)
  473                 ieee80211_iterate_nodes(&ic->ic_sta, get_sta_space, &req);
  474         else
  475                 get_sta_space(&req, ni);
  476         if (req.space > ireq->i_len)
  477                 req.space = ireq->i_len;
  478         if (req.space > 0) {
  479                 space = req.space;
  480                 /* XXX M_WAITOK after driver lock released */
  481                 p = malloc(space, M_TEMP, M_NOWAIT | M_ZERO);
  482                 if (p == NULL) {
  483                         error = ENOMEM;
  484                         goto bad;
  485                 }
  486                 req.si = p;
  487                 if (ni == NULL)
  488                         ieee80211_iterate_nodes(&ic->ic_sta, get_sta_info, &req);
  489                 else
  490                         get_sta_info(&req, ni);
  491                 ireq->i_len = space - req.space;
  492                 error = copyout(p, (uint8_t *) ireq->i_data+off, ireq->i_len);
  493                 free(p, M_TEMP);
  494         } else
  495                 ireq->i_len = 0;
  496 bad:
  497         if (ni != NULL)
  498                 ieee80211_free_node(ni);
  499         return error;
  500 }
  501 
  502 static __noinline int
  503 ieee80211_ioctl_getstainfo(struct ieee80211vap *vap, struct ieee80211req *ireq)
  504 {
  505         uint8_t macaddr[IEEE80211_ADDR_LEN];
  506         const size_t off = __offsetof(struct ieee80211req_sta_req, info);
  507         struct ieee80211_node *ni;
  508         int error;
  509 
  510         if (ireq->i_len < sizeof(struct ieee80211req_sta_req))
  511                 return EFAULT;
  512         error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
  513         if (error != 0)
  514                 return error;
  515         if (IEEE80211_ADDR_EQ(macaddr, vap->iv_ifp->if_broadcastaddr)) {
  516                 ni = NULL;
  517         } else {
  518                 ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr);
  519                 if (ni == NULL)
  520                         return ENOENT;
  521         }
  522         return getstainfo_common(vap, ireq, ni, off);
  523 }
  524 
  525 static __noinline int
  526 ieee80211_ioctl_getstatxpow(struct ieee80211vap *vap, struct ieee80211req *ireq)
  527 {
  528         struct ieee80211_node *ni;
  529         struct ieee80211req_sta_txpow txpow;
  530         int error;
  531 
  532         if (ireq->i_len != sizeof(txpow))
  533                 return EINVAL;
  534         error = copyin(ireq->i_data, &txpow, sizeof(txpow));
  535         if (error != 0)
  536                 return error;
  537         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, txpow.it_macaddr);
  538         if (ni == NULL)
  539                 return ENOENT;
  540         txpow.it_txpow = ni->ni_txpower;
  541         error = copyout(&txpow, ireq->i_data, sizeof(txpow));
  542         ieee80211_free_node(ni);
  543         return error;
  544 }
  545 
  546 static __noinline int
  547 ieee80211_ioctl_getwmeparam(struct ieee80211vap *vap, struct ieee80211req *ireq)
  548 {
  549         struct ieee80211com *ic = vap->iv_ic;
  550         struct ieee80211_wme_state *wme = &ic->ic_wme;
  551         struct wmeParams *wmep;
  552         int ac;
  553 
  554         if ((ic->ic_caps & IEEE80211_C_WME) == 0)
  555                 return EINVAL;
  556 
  557         ac = (ireq->i_len & IEEE80211_WMEPARAM_VAL);
  558         if (ac >= WME_NUM_AC)
  559                 ac = WME_AC_BE;
  560         if (ireq->i_len & IEEE80211_WMEPARAM_BSS)
  561                 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac];
  562         else
  563                 wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac];
  564         switch (ireq->i_type) {
  565         case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
  566                 ireq->i_val = wmep->wmep_logcwmin;
  567                 break;
  568         case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
  569                 ireq->i_val = wmep->wmep_logcwmax;
  570                 break;
  571         case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
  572                 ireq->i_val = wmep->wmep_aifsn;
  573                 break;
  574         case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
  575                 ireq->i_val = wmep->wmep_txopLimit;
  576                 break;
  577         case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
  578                 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac];
  579                 ireq->i_val = wmep->wmep_acm;
  580                 break;
  581         case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (!bss only)*/
  582                 wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac];
  583                 ireq->i_val = !wmep->wmep_noackPolicy;
  584                 break;
  585         }
  586         return 0;
  587 }
  588 
  589 static __noinline int
  590 ieee80211_ioctl_getmaccmd(struct ieee80211vap *vap, struct ieee80211req *ireq)
  591 {
  592         const struct ieee80211_aclator *acl = vap->iv_acl;
  593 
  594         return (acl == NULL ? EINVAL : acl->iac_getioctl(vap, ireq));
  595 }
  596 
  597 static __noinline int
  598 ieee80211_ioctl_getcurchan(struct ieee80211vap *vap, struct ieee80211req *ireq)
  599 {
  600         struct ieee80211com *ic = vap->iv_ic;
  601         struct ieee80211_channel *c;
  602 
  603         if (ireq->i_len != sizeof(struct ieee80211_channel))
  604                 return EINVAL;
  605         /*
  606          * vap's may have different operating channels when HT is
  607          * in use.  When in RUN state report the vap-specific channel.
  608          * Otherwise return curchan.
  609          */
  610         if (vap->iv_state == IEEE80211_S_RUN)
  611                 c = vap->iv_bss->ni_chan;
  612         else
  613                 c = ic->ic_curchan;
  614         return copyout(c, ireq->i_data, sizeof(*c));
  615 }
  616 
  617 static int
  618 getappie(const struct ieee80211_appie *aie, struct ieee80211req *ireq)
  619 {
  620         if (aie == NULL)
  621                 return EINVAL;
  622         /* NB: truncate, caller can check length */
  623         if (ireq->i_len > aie->ie_len)
  624                 ireq->i_len = aie->ie_len;
  625         return copyout(aie->ie_data, ireq->i_data, ireq->i_len);
  626 }
  627 
  628 static int
  629 ieee80211_ioctl_getappie(struct ieee80211vap *vap, struct ieee80211req *ireq)
  630 {
  631         uint8_t fc0;
  632 
  633         fc0 = ireq->i_val & 0xff;
  634         if ((fc0 & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
  635                 return EINVAL;
  636         /* NB: could check iv_opmode and reject but hardly worth the effort */
  637         switch (fc0 & IEEE80211_FC0_SUBTYPE_MASK) {
  638         case IEEE80211_FC0_SUBTYPE_BEACON:
  639                 return getappie(vap->iv_appie_beacon, ireq);
  640         case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
  641                 return getappie(vap->iv_appie_proberesp, ireq);
  642         case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
  643                 return getappie(vap->iv_appie_assocresp, ireq);
  644         case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
  645                 return getappie(vap->iv_appie_probereq, ireq);
  646         case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
  647                 return getappie(vap->iv_appie_assocreq, ireq);
  648         case IEEE80211_FC0_SUBTYPE_BEACON|IEEE80211_FC0_SUBTYPE_PROBE_RESP:
  649                 return getappie(vap->iv_appie_wpa, ireq);
  650         }
  651         return EINVAL;
  652 }
  653 
  654 static __noinline int
  655 ieee80211_ioctl_getregdomain(struct ieee80211vap *vap,
  656         const struct ieee80211req *ireq)
  657 {
  658         struct ieee80211com *ic = vap->iv_ic;
  659 
  660         if (ireq->i_len != sizeof(ic->ic_regdomain))
  661                 return EINVAL;
  662         return copyout(&ic->ic_regdomain, ireq->i_data,
  663             sizeof(ic->ic_regdomain));
  664 }
  665 
  666 static __noinline int
  667 ieee80211_ioctl_getroam(struct ieee80211vap *vap,
  668         const struct ieee80211req *ireq)
  669 {
  670         size_t len = ireq->i_len;
  671         /* NB: accept short requests for backwards compat */
  672         if (len > sizeof(vap->iv_roamparms))
  673                 len = sizeof(vap->iv_roamparms);
  674         return copyout(vap->iv_roamparms, ireq->i_data, len);
  675 }
  676 
  677 static __noinline int
  678 ieee80211_ioctl_gettxparams(struct ieee80211vap *vap,
  679         const struct ieee80211req *ireq)
  680 {
  681         size_t len = ireq->i_len;
  682         /* NB: accept short requests for backwards compat */
  683         if (len > sizeof(vap->iv_txparms))
  684                 len = sizeof(vap->iv_txparms);
  685         return copyout(vap->iv_txparms, ireq->i_data, len);
  686 }
  687 
  688 static __noinline int
  689 ieee80211_ioctl_getdevcaps(struct ieee80211com *ic,
  690         const struct ieee80211req *ireq)
  691 {
  692         struct ieee80211_devcaps_req *dc;
  693         struct ieee80211req_chaninfo *ci;
  694         int maxchans, error;
  695 
  696         maxchans = 1 + ((ireq->i_len - sizeof(struct ieee80211_devcaps_req)) /
  697             sizeof(struct ieee80211_channel));
  698         /* NB: require 1 so we know ic_nchans is accessible */
  699         if (maxchans < 1)
  700                 return EINVAL;
  701         /* constrain max request size, 2K channels is ~24Kbytes */
  702         if (maxchans > 2048)
  703                 maxchans = 2048;
  704         dc = (struct ieee80211_devcaps_req *)
  705             malloc(IEEE80211_DEVCAPS_SIZE(maxchans), M_TEMP, M_NOWAIT | M_ZERO);
  706         if (dc == NULL)
  707                 return ENOMEM;
  708         dc->dc_drivercaps = ic->ic_caps;
  709         dc->dc_cryptocaps = ic->ic_cryptocaps;
  710         dc->dc_htcaps = ic->ic_htcaps;
  711         ci = &dc->dc_chaninfo;
  712         ic->ic_getradiocaps(ic, maxchans, &ci->ic_nchans, ci->ic_chans);
  713         KASSERT(ci->ic_nchans <= maxchans,
  714             ("nchans %d maxchans %d", ci->ic_nchans, maxchans));
  715         ieee80211_sort_channels(ci->ic_chans, ci->ic_nchans);
  716         error = copyout(dc, ireq->i_data, IEEE80211_DEVCAPS_SPACE(dc));
  717         free(dc, M_TEMP);
  718         return error;
  719 }
  720 
  721 static __noinline int
  722 ieee80211_ioctl_getstavlan(struct ieee80211vap *vap, struct ieee80211req *ireq)
  723 {
  724         struct ieee80211_node *ni;
  725         struct ieee80211req_sta_vlan vlan;
  726         int error;
  727 
  728         if (ireq->i_len != sizeof(vlan))
  729                 return EINVAL;
  730         error = copyin(ireq->i_data, &vlan, sizeof(vlan));
  731         if (error != 0)
  732                 return error;
  733         if (!IEEE80211_ADDR_EQ(vlan.sv_macaddr, zerobssid)) {
  734                 ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
  735                     vlan.sv_macaddr);
  736                 if (ni == NULL)
  737                         return ENOENT;
  738         } else
  739                 ni = ieee80211_ref_node(vap->iv_bss);
  740         vlan.sv_vlan = ni->ni_vlan;
  741         error = copyout(&vlan, ireq->i_data, sizeof(vlan));
  742         ieee80211_free_node(ni);
  743         return error;
  744 }
  745 
  746 /*
  747  * Dummy ioctl get handler so the linker set is defined.
  748  */
  749 static int
  750 dummy_ioctl_get(struct ieee80211vap *vap, struct ieee80211req *ireq)
  751 {
  752         return ENOSYS;
  753 }
  754 IEEE80211_IOCTL_GET(dummy, dummy_ioctl_get);
  755 
  756 static int
  757 ieee80211_ioctl_getdefault(struct ieee80211vap *vap, struct ieee80211req *ireq)
  758 {
  759         ieee80211_ioctl_getfunc * const *get;
  760         int error;
  761 
  762         SET_FOREACH(get, ieee80211_ioctl_getset) {
  763                 error = (*get)(vap, ireq);
  764                 if (error != ENOSYS)
  765                         return error;
  766         }
  767         return EINVAL;
  768 }
  769 
  770 /*
  771  * When building the kernel with -O2 on the i386 architecture, gcc
  772  * seems to want to inline this function into ieee80211_ioctl()
  773  * (which is the only routine that calls it). When this happens,
  774  * ieee80211_ioctl() ends up consuming an additional 2K of stack
  775  * space. (Exactly why it needs so much is unclear.) The problem
  776  * is that it's possible for ieee80211_ioctl() to invoke other
  777  * routines (including driver init functions) which could then find
  778  * themselves perilously close to exhausting the stack.
  779  *
  780  * To avoid this, we deliberately prevent gcc from inlining this
  781  * routine. Another way to avoid this is to use less agressive
  782  * optimization when compiling this file (i.e. -O instead of -O2)
  783  * but special-casing the compilation of this one module in the
  784  * build system would be awkward.
  785  */
  786 static __noinline int
  787 ieee80211_ioctl_get80211(struct ieee80211vap *vap, u_long cmd,
  788     struct ieee80211req *ireq)
  789 {
  790 #define MS(_v, _f)      (((_v) & _f) >> _f##_S)
  791         struct ieee80211com *ic = vap->iv_ic;
  792         u_int kid, len;
  793         uint8_t tmpkey[IEEE80211_KEYBUF_SIZE];
  794         char tmpssid[IEEE80211_NWID_LEN];
  795         int error = 0;
  796 
  797         switch (ireq->i_type) {
  798         case IEEE80211_IOC_SSID:
  799                 switch (vap->iv_state) {
  800                 case IEEE80211_S_INIT:
  801                 case IEEE80211_S_SCAN:
  802                         ireq->i_len = vap->iv_des_ssid[0].len;
  803                         memcpy(tmpssid, vap->iv_des_ssid[0].ssid, ireq->i_len);
  804                         break;
  805                 default:
  806                         ireq->i_len = vap->iv_bss->ni_esslen;
  807                         memcpy(tmpssid, vap->iv_bss->ni_essid, ireq->i_len);
  808                         break;
  809                 }
  810                 error = copyout(tmpssid, ireq->i_data, ireq->i_len);
  811                 break;
  812         case IEEE80211_IOC_NUMSSIDS:
  813                 ireq->i_val = 1;
  814                 break;
  815         case IEEE80211_IOC_WEP:
  816                 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0)
  817                         ireq->i_val = IEEE80211_WEP_OFF;
  818                 else if (vap->iv_flags & IEEE80211_F_DROPUNENC)
  819                         ireq->i_val = IEEE80211_WEP_ON;
  820                 else
  821                         ireq->i_val = IEEE80211_WEP_MIXED;
  822                 break;
  823         case IEEE80211_IOC_WEPKEY:
  824                 kid = (u_int) ireq->i_val;
  825                 if (kid >= IEEE80211_WEP_NKID)
  826                         return EINVAL;
  827                 len = (u_int) vap->iv_nw_keys[kid].wk_keylen;
  828                 /* NB: only root can read WEP keys */
  829                 if (priv_check(curthread, PRIV_NET80211_GETKEY) == 0) {
  830                         bcopy(vap->iv_nw_keys[kid].wk_key, tmpkey, len);
  831                 } else {
  832                         bzero(tmpkey, len);
  833                 }
  834                 ireq->i_len = len;
  835                 error = copyout(tmpkey, ireq->i_data, len);
  836                 break;
  837         case IEEE80211_IOC_NUMWEPKEYS:
  838                 ireq->i_val = IEEE80211_WEP_NKID;
  839                 break;
  840         case IEEE80211_IOC_WEPTXKEY:
  841                 ireq->i_val = vap->iv_def_txkey;
  842                 break;
  843         case IEEE80211_IOC_AUTHMODE:
  844                 if (vap->iv_flags & IEEE80211_F_WPA)
  845                         ireq->i_val = IEEE80211_AUTH_WPA;
  846                 else
  847                         ireq->i_val = vap->iv_bss->ni_authmode;
  848                 break;
  849         case IEEE80211_IOC_CHANNEL:
  850                 ireq->i_val = ieee80211_chan2ieee(ic, ic->ic_curchan);
  851                 break;
  852         case IEEE80211_IOC_POWERSAVE:
  853                 if (vap->iv_flags & IEEE80211_F_PMGTON)
  854                         ireq->i_val = IEEE80211_POWERSAVE_ON;
  855                 else
  856                         ireq->i_val = IEEE80211_POWERSAVE_OFF;
  857                 break;
  858         case IEEE80211_IOC_POWERSAVESLEEP:
  859                 ireq->i_val = ic->ic_lintval;
  860                 break;
  861         case IEEE80211_IOC_RTSTHRESHOLD:
  862                 ireq->i_val = vap->iv_rtsthreshold;
  863                 break;
  864         case IEEE80211_IOC_PROTMODE:
  865                 ireq->i_val = ic->ic_protmode;
  866                 break;
  867         case IEEE80211_IOC_TXPOWER:
  868                 /*
  869                  * Tx power limit is the min of max regulatory
  870                  * power, any user-set limit, and the max the
  871                  * radio can do.
  872                  */
  873                 ireq->i_val = 2*ic->ic_curchan->ic_maxregpower;
  874                 if (ireq->i_val > ic->ic_txpowlimit)
  875                         ireq->i_val = ic->ic_txpowlimit;
  876                 if (ireq->i_val > ic->ic_curchan->ic_maxpower)
  877                         ireq->i_val = ic->ic_curchan->ic_maxpower;
  878                 break;
  879         case IEEE80211_IOC_WPA:
  880                 switch (vap->iv_flags & IEEE80211_F_WPA) {
  881                 case IEEE80211_F_WPA1:
  882                         ireq->i_val = 1;
  883                         break;
  884                 case IEEE80211_F_WPA2:
  885                         ireq->i_val = 2;
  886                         break;
  887                 case IEEE80211_F_WPA1 | IEEE80211_F_WPA2:
  888                         ireq->i_val = 3;
  889                         break;
  890                 default:
  891                         ireq->i_val = 0;
  892                         break;
  893                 }
  894                 break;
  895         case IEEE80211_IOC_CHANLIST:
  896                 error = ieee80211_ioctl_getchanlist(vap, ireq);
  897                 break;
  898         case IEEE80211_IOC_ROAMING:
  899                 ireq->i_val = vap->iv_roaming;
  900                 break;
  901         case IEEE80211_IOC_PRIVACY:
  902                 ireq->i_val = (vap->iv_flags & IEEE80211_F_PRIVACY) != 0;
  903                 break;
  904         case IEEE80211_IOC_DROPUNENCRYPTED:
  905                 ireq->i_val = (vap->iv_flags & IEEE80211_F_DROPUNENC) != 0;
  906                 break;
  907         case IEEE80211_IOC_COUNTERMEASURES:
  908                 ireq->i_val = (vap->iv_flags & IEEE80211_F_COUNTERM) != 0;
  909                 break;
  910         case IEEE80211_IOC_WME:
  911                 ireq->i_val = (vap->iv_flags & IEEE80211_F_WME) != 0;
  912                 break;
  913         case IEEE80211_IOC_HIDESSID:
  914                 ireq->i_val = (vap->iv_flags & IEEE80211_F_HIDESSID) != 0;
  915                 break;
  916         case IEEE80211_IOC_APBRIDGE:
  917                 ireq->i_val = (vap->iv_flags & IEEE80211_F_NOBRIDGE) == 0;
  918                 break;
  919         case IEEE80211_IOC_WPAKEY:
  920                 error = ieee80211_ioctl_getkey(vap, ireq);
  921                 break;
  922         case IEEE80211_IOC_CHANINFO:
  923                 error = ieee80211_ioctl_getchaninfo(vap, ireq);
  924                 break;
  925         case IEEE80211_IOC_BSSID:
  926                 if (ireq->i_len != IEEE80211_ADDR_LEN)
  927                         return EINVAL;
  928                 if (vap->iv_state == IEEE80211_S_RUN) {
  929                         error = copyout(vap->iv_opmode == IEEE80211_M_WDS ?
  930                             vap->iv_bss->ni_macaddr : vap->iv_bss->ni_bssid,
  931                             ireq->i_data, ireq->i_len);
  932                 } else
  933                         error = copyout(vap->iv_des_bssid, ireq->i_data,
  934                             ireq->i_len);
  935                 break;
  936         case IEEE80211_IOC_WPAIE:
  937                 error = ieee80211_ioctl_getwpaie(vap, ireq, ireq->i_type);
  938                 break;
  939         case IEEE80211_IOC_WPAIE2:
  940                 error = ieee80211_ioctl_getwpaie(vap, ireq, ireq->i_type);
  941                 break;
  942         case IEEE80211_IOC_SCAN_RESULTS:
  943                 error = ieee80211_ioctl_getscanresults(vap, ireq);
  944                 break;
  945         case IEEE80211_IOC_STA_STATS:
  946                 error = ieee80211_ioctl_getstastats(vap, ireq);
  947                 break;
  948         case IEEE80211_IOC_TXPOWMAX:
  949                 ireq->i_val = vap->iv_bss->ni_txpower;
  950                 break;
  951         case IEEE80211_IOC_STA_TXPOW:
  952                 error = ieee80211_ioctl_getstatxpow(vap, ireq);
  953                 break;
  954         case IEEE80211_IOC_STA_INFO:
  955                 error = ieee80211_ioctl_getstainfo(vap, ireq);
  956                 break;
  957         case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
  958         case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
  959         case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
  960         case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
  961         case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
  962         case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (bss only) */
  963                 error = ieee80211_ioctl_getwmeparam(vap, ireq);
  964                 break;
  965         case IEEE80211_IOC_DTIM_PERIOD:
  966                 ireq->i_val = vap->iv_dtim_period;
  967                 break;
  968         case IEEE80211_IOC_BEACON_INTERVAL:
  969                 /* NB: get from ic_bss for station mode */
  970                 ireq->i_val = vap->iv_bss->ni_intval;
  971                 break;
  972         case IEEE80211_IOC_PUREG:
  973                 ireq->i_val = (vap->iv_flags & IEEE80211_F_PUREG) != 0;
  974                 break;
  975         case IEEE80211_IOC_QUIET:
  976                 ireq->i_val = vap->iv_quiet;
  977                 break;
  978         case IEEE80211_IOC_QUIET_COUNT:
  979                 ireq->i_val = vap->iv_quiet_count;
  980                 break;
  981         case IEEE80211_IOC_QUIET_PERIOD:
  982                 ireq->i_val = vap->iv_quiet_period;
  983                 break;
  984         case IEEE80211_IOC_QUIET_DUR:
  985                 ireq->i_val = vap->iv_quiet_duration;
  986                 break;
  987         case IEEE80211_IOC_QUIET_OFFSET:
  988                 ireq->i_val = vap->iv_quiet_offset;
  989                 break;
  990         case IEEE80211_IOC_BGSCAN:
  991                 ireq->i_val = (vap->iv_flags & IEEE80211_F_BGSCAN) != 0;
  992                 break;
  993         case IEEE80211_IOC_BGSCAN_IDLE:
  994                 ireq->i_val = vap->iv_bgscanidle*hz/1000;       /* ms */
  995                 break;
  996         case IEEE80211_IOC_BGSCAN_INTERVAL:
  997                 ireq->i_val = vap->iv_bgscanintvl/hz;           /* seconds */
  998                 break;
  999         case IEEE80211_IOC_SCANVALID:
 1000                 ireq->i_val = vap->iv_scanvalid/hz;             /* seconds */
 1001                 break;
 1002         case IEEE80211_IOC_FRAGTHRESHOLD:
 1003                 ireq->i_val = vap->iv_fragthreshold;
 1004                 break;
 1005         case IEEE80211_IOC_MACCMD:
 1006                 error = ieee80211_ioctl_getmaccmd(vap, ireq);
 1007                 break;
 1008         case IEEE80211_IOC_BURST:
 1009                 ireq->i_val = (vap->iv_flags & IEEE80211_F_BURST) != 0;
 1010                 break;
 1011         case IEEE80211_IOC_BMISSTHRESHOLD:
 1012                 ireq->i_val = vap->iv_bmissthreshold;
 1013                 break;
 1014         case IEEE80211_IOC_CURCHAN:
 1015                 error = ieee80211_ioctl_getcurchan(vap, ireq);
 1016                 break;
 1017         case IEEE80211_IOC_SHORTGI:
 1018                 ireq->i_val = 0;
 1019                 if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20)
 1020                         ireq->i_val |= IEEE80211_HTCAP_SHORTGI20;
 1021                 if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40)
 1022                         ireq->i_val |= IEEE80211_HTCAP_SHORTGI40;
 1023                 break;
 1024         case IEEE80211_IOC_AMPDU:
 1025                 ireq->i_val = 0;
 1026                 if (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_TX)
 1027                         ireq->i_val |= 1;
 1028                 if (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_RX)
 1029                         ireq->i_val |= 2;
 1030                 break;
 1031         case IEEE80211_IOC_AMPDU_LIMIT:
 1032                 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
 1033                         ireq->i_val = vap->iv_ampdu_rxmax;
 1034                 else if (vap->iv_state == IEEE80211_S_RUN)
 1035                         ireq->i_val = MS(vap->iv_bss->ni_htparam,
 1036                             IEEE80211_HTCAP_MAXRXAMPDU);
 1037                 else
 1038                         ireq->i_val = vap->iv_ampdu_limit;
 1039                 break;
 1040         case IEEE80211_IOC_AMPDU_DENSITY:
 1041                 if (vap->iv_opmode == IEEE80211_M_STA &&
 1042                     vap->iv_state == IEEE80211_S_RUN)
 1043                         ireq->i_val = MS(vap->iv_bss->ni_htparam,
 1044                             IEEE80211_HTCAP_MPDUDENSITY);
 1045                 else
 1046                         ireq->i_val = vap->iv_ampdu_density;
 1047                 break;
 1048         case IEEE80211_IOC_AMSDU:
 1049                 ireq->i_val = 0;
 1050                 if (vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX)
 1051                         ireq->i_val |= 1;
 1052                 if (vap->iv_flags_ht & IEEE80211_FHT_AMSDU_RX)
 1053                         ireq->i_val |= 2;
 1054                 break;
 1055         case IEEE80211_IOC_AMSDU_LIMIT:
 1056                 ireq->i_val = vap->iv_amsdu_limit;      /* XXX truncation? */
 1057                 break;
 1058         case IEEE80211_IOC_PUREN:
 1059                 ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_PUREN) != 0;
 1060                 break;
 1061         case IEEE80211_IOC_DOTH:
 1062                 ireq->i_val = (vap->iv_flags & IEEE80211_F_DOTH) != 0;
 1063                 break;
 1064         case IEEE80211_IOC_REGDOMAIN:
 1065                 error = ieee80211_ioctl_getregdomain(vap, ireq);
 1066                 break;
 1067         case IEEE80211_IOC_ROAM:
 1068                 error = ieee80211_ioctl_getroam(vap, ireq);
 1069                 break;
 1070         case IEEE80211_IOC_TXPARAMS:
 1071                 error = ieee80211_ioctl_gettxparams(vap, ireq);
 1072                 break;
 1073         case IEEE80211_IOC_HTCOMPAT:
 1074                 ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) != 0;
 1075                 break;
 1076         case IEEE80211_IOC_DWDS:
 1077                 ireq->i_val = (vap->iv_flags & IEEE80211_F_DWDS) != 0;
 1078                 break;
 1079         case IEEE80211_IOC_INACTIVITY:
 1080                 ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_INACT) != 0;
 1081                 break;
 1082         case IEEE80211_IOC_APPIE:
 1083                 error = ieee80211_ioctl_getappie(vap, ireq);
 1084                 break;
 1085         case IEEE80211_IOC_WPS:
 1086                 ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_WPS) != 0;
 1087                 break;
 1088         case IEEE80211_IOC_TSN:
 1089                 ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_TSN) != 0;
 1090                 break;
 1091         case IEEE80211_IOC_DFS:
 1092                 ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_DFS) != 0;
 1093                 break;
 1094         case IEEE80211_IOC_DOTD:
 1095                 ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_DOTD) != 0;
 1096                 break;
 1097         case IEEE80211_IOC_DEVCAPS:
 1098                 error = ieee80211_ioctl_getdevcaps(ic, ireq);
 1099                 break;
 1100         case IEEE80211_IOC_HTPROTMODE:
 1101                 ireq->i_val = ic->ic_htprotmode;
 1102                 break;
 1103         case IEEE80211_IOC_HTCONF:
 1104                 if (vap->iv_flags_ht & IEEE80211_FHT_HT) {
 1105                         ireq->i_val = 1;
 1106                         if (vap->iv_flags_ht & IEEE80211_FHT_USEHT40)
 1107                                 ireq->i_val |= 2;
 1108                 } else
 1109                         ireq->i_val = 0;
 1110                 break;
 1111         case IEEE80211_IOC_STA_VLAN:
 1112                 error = ieee80211_ioctl_getstavlan(vap, ireq);
 1113                 break;
 1114         case IEEE80211_IOC_SMPS:
 1115                 if (vap->iv_opmode == IEEE80211_M_STA &&
 1116                     vap->iv_state == IEEE80211_S_RUN) {
 1117                         if (vap->iv_bss->ni_flags & IEEE80211_NODE_MIMO_RTS)
 1118                                 ireq->i_val = IEEE80211_HTCAP_SMPS_DYNAMIC;
 1119                         else if (vap->iv_bss->ni_flags & IEEE80211_NODE_MIMO_PS)
 1120                                 ireq->i_val = IEEE80211_HTCAP_SMPS_ENA;
 1121                         else
 1122                                 ireq->i_val = IEEE80211_HTCAP_SMPS_OFF;
 1123                 } else
 1124                         ireq->i_val = vap->iv_htcaps & IEEE80211_HTCAP_SMPS;
 1125                 break;
 1126         case IEEE80211_IOC_RIFS:
 1127                 if (vap->iv_opmode == IEEE80211_M_STA &&
 1128                     vap->iv_state == IEEE80211_S_RUN)
 1129                         ireq->i_val =
 1130                             (vap->iv_bss->ni_flags & IEEE80211_NODE_RIFS) != 0;
 1131                 else
 1132                         ireq->i_val =
 1133                             (vap->iv_flags_ht & IEEE80211_FHT_RIFS) != 0;
 1134                 break;
 1135         default:
 1136                 error = ieee80211_ioctl_getdefault(vap, ireq);
 1137                 break;
 1138         }
 1139         return error;
 1140 #undef MS
 1141 }
 1142 
 1143 static __noinline int
 1144 ieee80211_ioctl_setkey(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1145 {
 1146         struct ieee80211req_key ik;
 1147         struct ieee80211_node *ni;
 1148         struct ieee80211_key *wk;
 1149         uint16_t kid;
 1150         int error, i;
 1151 
 1152         if (ireq->i_len != sizeof(ik))
 1153                 return EINVAL;
 1154         error = copyin(ireq->i_data, &ik, sizeof(ik));
 1155         if (error)
 1156                 return error;
 1157         /* NB: cipher support is verified by ieee80211_crypt_newkey */
 1158         /* NB: this also checks ik->ik_keylen > sizeof(wk->wk_key) */
 1159         if (ik.ik_keylen > sizeof(ik.ik_keydata))
 1160                 return E2BIG;
 1161         kid = ik.ik_keyix;
 1162         if (kid == IEEE80211_KEYIX_NONE) {
 1163                 /* XXX unicast keys currently must be tx/rx */
 1164                 if (ik.ik_flags != (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV))
 1165                         return EINVAL;
 1166                 if (vap->iv_opmode == IEEE80211_M_STA) {
 1167                         ni = ieee80211_ref_node(vap->iv_bss);
 1168                         if (!IEEE80211_ADDR_EQ(ik.ik_macaddr, ni->ni_bssid)) {
 1169                                 ieee80211_free_node(ni);
 1170                                 return EADDRNOTAVAIL;
 1171                         }
 1172                 } else {
 1173                         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
 1174                                 ik.ik_macaddr);
 1175                         if (ni == NULL)
 1176                                 return ENOENT;
 1177                 }
 1178                 wk = &ni->ni_ucastkey;
 1179         } else {
 1180                 if (kid >= IEEE80211_WEP_NKID)
 1181                         return EINVAL;
 1182                 wk = &vap->iv_nw_keys[kid];
 1183                 /*
 1184                  * Global slots start off w/o any assigned key index.
 1185                  * Force one here for consistency with IEEE80211_IOC_WEPKEY.
 1186                  */
 1187                 if (wk->wk_keyix == IEEE80211_KEYIX_NONE)
 1188                         wk->wk_keyix = kid;
 1189                 ni = NULL;
 1190         }
 1191         error = 0;
 1192         ieee80211_key_update_begin(vap);
 1193         if (ieee80211_crypto_newkey(vap, ik.ik_type, ik.ik_flags, wk)) {
 1194                 wk->wk_keylen = ik.ik_keylen;
 1195                 /* NB: MIC presence is implied by cipher type */
 1196                 if (wk->wk_keylen > IEEE80211_KEYBUF_SIZE)
 1197                         wk->wk_keylen = IEEE80211_KEYBUF_SIZE;
 1198                 for (i = 0; i < IEEE80211_TID_SIZE; i++)
 1199                         wk->wk_keyrsc[i] = ik.ik_keyrsc;
 1200                 wk->wk_keytsc = 0;                      /* new key, reset */
 1201                 memset(wk->wk_key, 0, sizeof(wk->wk_key));
 1202                 memcpy(wk->wk_key, ik.ik_keydata, ik.ik_keylen);
 1203                 IEEE80211_ADDR_COPY(wk->wk_macaddr,
 1204                     ni != NULL ?  ni->ni_macaddr : ik.ik_macaddr);
 1205                 if (!ieee80211_crypto_setkey(vap, wk))
 1206                         error = EIO;
 1207                 else if ((ik.ik_flags & IEEE80211_KEY_DEFAULT))
 1208                         vap->iv_def_txkey = kid;
 1209         } else
 1210                 error = ENXIO;
 1211         ieee80211_key_update_end(vap);
 1212         if (ni != NULL)
 1213                 ieee80211_free_node(ni);
 1214         return error;
 1215 }
 1216 
 1217 static __noinline int
 1218 ieee80211_ioctl_delkey(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1219 {
 1220         struct ieee80211req_del_key dk;
 1221         int kid, error;
 1222 
 1223         if (ireq->i_len != sizeof(dk))
 1224                 return EINVAL;
 1225         error = copyin(ireq->i_data, &dk, sizeof(dk));
 1226         if (error)
 1227                 return error;
 1228         kid = dk.idk_keyix;
 1229         /* XXX uint8_t -> uint16_t */
 1230         if (dk.idk_keyix == (uint8_t) IEEE80211_KEYIX_NONE) {
 1231                 struct ieee80211_node *ni;
 1232 
 1233                 if (vap->iv_opmode == IEEE80211_M_STA) {
 1234                         ni = ieee80211_ref_node(vap->iv_bss);
 1235                         if (!IEEE80211_ADDR_EQ(dk.idk_macaddr, ni->ni_bssid)) {
 1236                                 ieee80211_free_node(ni);
 1237                                 return EADDRNOTAVAIL;
 1238                         }
 1239                 } else {
 1240                         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
 1241                                 dk.idk_macaddr);
 1242                         if (ni == NULL)
 1243                                 return ENOENT;
 1244                 }
 1245                 /* XXX error return */
 1246                 ieee80211_node_delucastkey(ni);
 1247                 ieee80211_free_node(ni);
 1248         } else {
 1249                 if (kid >= IEEE80211_WEP_NKID)
 1250                         return EINVAL;
 1251                 /* XXX error return */
 1252                 ieee80211_crypto_delkey(vap, &vap->iv_nw_keys[kid]);
 1253         }
 1254         return 0;
 1255 }
 1256 
 1257 struct mlmeop {
 1258         struct ieee80211vap *vap;
 1259         int     op;
 1260         int     reason;
 1261 };
 1262 
 1263 static void
 1264 mlmedebug(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN],
 1265         int op, int reason)
 1266 {
 1267 #ifdef IEEE80211_DEBUG
 1268         static const struct {
 1269                 int mask;
 1270                 const char *opstr;
 1271         } ops[] = {
 1272                 { 0, "op#0" },
 1273                 { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
 1274                   IEEE80211_MSG_ASSOC, "assoc" },
 1275                 { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
 1276                   IEEE80211_MSG_ASSOC, "disassoc" },
 1277                 { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
 1278                   IEEE80211_MSG_AUTH, "deauth" },
 1279                 { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
 1280                   IEEE80211_MSG_AUTH, "authorize" },
 1281                 { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
 1282                   IEEE80211_MSG_AUTH, "unauthorize" },
 1283         };
 1284 
 1285         if (op == IEEE80211_MLME_AUTH) {
 1286                 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_IOCTL |
 1287                     IEEE80211_MSG_STATE | IEEE80211_MSG_AUTH, mac,
 1288                     "station authenticate %s via MLME (reason %d)",
 1289                     reason == IEEE80211_STATUS_SUCCESS ? "ACCEPT" : "REJECT",
 1290                     reason);
 1291         } else if (!(IEEE80211_MLME_ASSOC <= op && op <= IEEE80211_MLME_AUTH)) {
 1292                 IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, mac,
 1293                     "unknown MLME request %d (reason %d)", op, reason);
 1294         } else if (reason == IEEE80211_STATUS_SUCCESS) {
 1295                 IEEE80211_NOTE_MAC(vap, ops[op].mask, mac,
 1296                     "station %s via MLME", ops[op].opstr);
 1297         } else {
 1298                 IEEE80211_NOTE_MAC(vap, ops[op].mask, mac,
 1299                     "station %s via MLME (reason %d)", ops[op].opstr, reason);
 1300         }
 1301 #endif /* IEEE80211_DEBUG */
 1302 }
 1303 
 1304 static void
 1305 domlme(void *arg, struct ieee80211_node *ni)
 1306 {
 1307         struct mlmeop *mop = arg;
 1308         struct ieee80211vap *vap = ni->ni_vap;
 1309 
 1310         if (vap != mop->vap)
 1311                 return;
 1312         /*
 1313          * NB: if ni_associd is zero then the node is already cleaned
 1314          * up and we don't need to do this (we're safely holding a
 1315          * reference but should otherwise not modify it's state).
 1316          */ 
 1317         if (ni->ni_associd == 0)
 1318                 return;
 1319         mlmedebug(vap, ni->ni_macaddr, mop->op, mop->reason);
 1320         if (mop->op == IEEE80211_MLME_DEAUTH) {
 1321                 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
 1322                     mop->reason);
 1323         } else {
 1324                 IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
 1325                     mop->reason);
 1326         }
 1327         ieee80211_node_leave(ni);
 1328 }
 1329 
 1330 static int
 1331 setmlme_dropsta(struct ieee80211vap *vap,
 1332         const uint8_t mac[IEEE80211_ADDR_LEN], struct mlmeop *mlmeop)
 1333 {
 1334         struct ieee80211com *ic = vap->iv_ic;
 1335         struct ieee80211_node_table *nt = &ic->ic_sta;
 1336         struct ieee80211_node *ni;
 1337         int error = 0;
 1338 
 1339         /* NB: the broadcast address means do 'em all */
 1340         if (!IEEE80211_ADDR_EQ(mac, ic->ic_ifp->if_broadcastaddr)) {
 1341                 IEEE80211_NODE_LOCK(nt);
 1342                 ni = ieee80211_find_node_locked(nt, mac);
 1343                 IEEE80211_NODE_UNLOCK(nt);
 1344                 /*
 1345                  * Don't do the node update inside the node
 1346                  * table lock.  This unfortunately causes LORs
 1347                  * with drivers and their TX paths.
 1348                  */
 1349                 if (ni != NULL) {
 1350                         domlme(mlmeop, ni);
 1351                         ieee80211_free_node(ni);
 1352                 } else
 1353                         error = ENOENT;
 1354         } else {
 1355                 ieee80211_iterate_nodes(nt, domlme, mlmeop);
 1356         }
 1357         return error;
 1358 }
 1359 
 1360 static __noinline int
 1361 setmlme_common(struct ieee80211vap *vap, int op,
 1362         const uint8_t mac[IEEE80211_ADDR_LEN], int reason)
 1363 {
 1364         struct ieee80211com *ic = vap->iv_ic;
 1365         struct ieee80211_node_table *nt = &ic->ic_sta;
 1366         struct ieee80211_node *ni;
 1367         struct mlmeop mlmeop;
 1368         int error;
 1369 
 1370         error = 0;
 1371         switch (op) {
 1372         case IEEE80211_MLME_DISASSOC:
 1373         case IEEE80211_MLME_DEAUTH:
 1374                 switch (vap->iv_opmode) {
 1375                 case IEEE80211_M_STA:
 1376                         mlmedebug(vap, vap->iv_bss->ni_macaddr, op, reason);
 1377                         /* XXX not quite right */
 1378                         ieee80211_new_state(vap, IEEE80211_S_INIT, reason);
 1379                         break;
 1380                 case IEEE80211_M_HOSTAP:
 1381                         mlmeop.vap = vap;
 1382                         mlmeop.op = op;
 1383                         mlmeop.reason = reason;
 1384                         error = setmlme_dropsta(vap, mac, &mlmeop);
 1385                         break;
 1386                 case IEEE80211_M_WDS:
 1387                         /* XXX user app should send raw frame? */
 1388                         if (op != IEEE80211_MLME_DEAUTH) {
 1389                                 error = EINVAL;
 1390                                 break;
 1391                         }
 1392 #if 0
 1393                         /* XXX accept any address, simplifies user code */
 1394                         if (!IEEE80211_ADDR_EQ(mac, vap->iv_bss->ni_macaddr)) {
 1395                                 error = EINVAL;
 1396                                 break;
 1397                         }
 1398 #endif
 1399                         mlmedebug(vap, vap->iv_bss->ni_macaddr, op, reason);
 1400                         ni = ieee80211_ref_node(vap->iv_bss);
 1401                         IEEE80211_SEND_MGMT(ni,
 1402                             IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
 1403                         ieee80211_free_node(ni);
 1404                         break;
 1405                 case IEEE80211_M_MBSS:
 1406                         IEEE80211_NODE_LOCK(nt);
 1407                         ni = ieee80211_find_node_locked(nt, mac);
 1408                         /*
 1409                          * Don't do the node update inside the node
 1410                          * table lock.  This unfortunately causes LORs
 1411                          * with drivers and their TX paths.
 1412                          */
 1413                         IEEE80211_NODE_UNLOCK(nt);
 1414                         if (ni != NULL) {
 1415                                 ieee80211_node_leave(ni);
 1416                                 ieee80211_free_node(ni);
 1417                         } else {
 1418                                 error = ENOENT;
 1419                         }
 1420                         break;
 1421                 default:
 1422                         error = EINVAL;
 1423                         break;
 1424                 }
 1425                 break;
 1426         case IEEE80211_MLME_AUTHORIZE:
 1427         case IEEE80211_MLME_UNAUTHORIZE:
 1428                 if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
 1429                     vap->iv_opmode != IEEE80211_M_WDS) {
 1430                         error = EINVAL;
 1431                         break;
 1432                 }
 1433                 IEEE80211_NODE_LOCK(nt);
 1434                 ni = ieee80211_find_vap_node_locked(nt, vap, mac);
 1435                 /*
 1436                  * Don't do the node update inside the node
 1437                  * table lock.  This unfortunately causes LORs
 1438                  * with drivers and their TX paths.
 1439                  */
 1440                 IEEE80211_NODE_UNLOCK(nt);
 1441                 if (ni != NULL) {
 1442                         mlmedebug(vap, mac, op, reason);
 1443                         if (op == IEEE80211_MLME_AUTHORIZE)
 1444                                 ieee80211_node_authorize(ni);
 1445                         else
 1446                                 ieee80211_node_unauthorize(ni);
 1447                         ieee80211_free_node(ni);
 1448                 } else
 1449                         error = ENOENT;
 1450                 break;
 1451         case IEEE80211_MLME_AUTH:
 1452                 if (vap->iv_opmode != IEEE80211_M_HOSTAP) {
 1453                         error = EINVAL;
 1454                         break;
 1455                 }
 1456                 IEEE80211_NODE_LOCK(nt);
 1457                 ni = ieee80211_find_vap_node_locked(nt, vap, mac);
 1458                 /*
 1459                  * Don't do the node update inside the node
 1460                  * table lock.  This unfortunately causes LORs
 1461                  * with drivers and their TX paths.
 1462                  */
 1463                 IEEE80211_NODE_UNLOCK(nt);
 1464                 if (ni != NULL) {
 1465                         mlmedebug(vap, mac, op, reason);
 1466                         if (reason == IEEE80211_STATUS_SUCCESS) {
 1467                                 IEEE80211_SEND_MGMT(ni,
 1468                                     IEEE80211_FC0_SUBTYPE_AUTH, 2);
 1469                                 /*
 1470                                  * For shared key auth, just continue the
 1471                                  * exchange.  Otherwise when 802.1x is not in
 1472                                  * use mark the port authorized at this point
 1473                                  * so traffic can flow.
 1474                                  */
 1475                                 if (ni->ni_authmode != IEEE80211_AUTH_8021X &&
 1476                                     ni->ni_challenge == NULL)
 1477                                       ieee80211_node_authorize(ni);
 1478                         } else {
 1479                                 vap->iv_stats.is_rx_acl++;
 1480                                 ieee80211_send_error(ni, ni->ni_macaddr,
 1481                                     IEEE80211_FC0_SUBTYPE_AUTH, 2|(reason<<16));
 1482                                 ieee80211_node_leave(ni);
 1483                         }
 1484                         ieee80211_free_node(ni);
 1485                 } else
 1486                         error = ENOENT;
 1487                 break;
 1488         default:
 1489                 error = EINVAL;
 1490                 break;
 1491         }
 1492         return error;
 1493 }
 1494 
 1495 struct scanlookup {
 1496         const uint8_t *mac;
 1497         int esslen;
 1498         const uint8_t *essid;
 1499         const struct ieee80211_scan_entry *se;
 1500 };
 1501 
 1502 /*
 1503  * Match mac address and any ssid.
 1504  */
 1505 static void
 1506 mlmelookup(void *arg, const struct ieee80211_scan_entry *se)
 1507 {
 1508         struct scanlookup *look = arg;
 1509 
 1510         if (!IEEE80211_ADDR_EQ(look->mac, se->se_macaddr))
 1511                 return;
 1512         if (look->esslen != 0) {
 1513                 if (se->se_ssid[1] != look->esslen)
 1514                         return;
 1515                 if (memcmp(look->essid, se->se_ssid+2, look->esslen))
 1516                         return;
 1517         }
 1518         look->se = se;
 1519 }
 1520 
 1521 static __noinline int
 1522 setmlme_assoc_sta(struct ieee80211vap *vap,
 1523         const uint8_t mac[IEEE80211_ADDR_LEN], int ssid_len,
 1524         const uint8_t ssid[IEEE80211_NWID_LEN])
 1525 {
 1526         struct scanlookup lookup;
 1527 
 1528         KASSERT(vap->iv_opmode == IEEE80211_M_STA,
 1529             ("expected opmode STA not %s",
 1530             ieee80211_opmode_name[vap->iv_opmode]));
 1531 
 1532         /* NB: this is racey if roaming is !manual */
 1533         lookup.se = NULL;
 1534         lookup.mac = mac;
 1535         lookup.esslen = ssid_len;
 1536         lookup.essid = ssid;
 1537         ieee80211_scan_iterate(vap, mlmelookup, &lookup);
 1538         if (lookup.se == NULL)
 1539                 return ENOENT;
 1540         mlmedebug(vap, mac, IEEE80211_MLME_ASSOC, 0);
 1541         if (!ieee80211_sta_join(vap, lookup.se->se_chan, lookup.se))
 1542                 return EIO;             /* XXX unique but could be better */
 1543         return 0;
 1544 }
 1545 
 1546 static __noinline int
 1547 setmlme_assoc_adhoc(struct ieee80211vap *vap,
 1548         const uint8_t mac[IEEE80211_ADDR_LEN], int ssid_len,
 1549         const uint8_t ssid[IEEE80211_NWID_LEN])
 1550 {
 1551         struct ieee80211_scan_req sr;
 1552 
 1553         KASSERT(vap->iv_opmode == IEEE80211_M_IBSS ||
 1554             vap->iv_opmode == IEEE80211_M_AHDEMO,
 1555             ("expected opmode IBSS or AHDEMO not %s",
 1556             ieee80211_opmode_name[vap->iv_opmode]));
 1557 
 1558         if (ssid_len == 0)
 1559                 return EINVAL;
 1560 
 1561         /* NB: IEEE80211_IOC_SSID call missing for ap_scan=2. */
 1562         memset(vap->iv_des_ssid[0].ssid, 0, IEEE80211_NWID_LEN);
 1563         vap->iv_des_ssid[0].len = ssid_len;
 1564         memcpy(vap->iv_des_ssid[0].ssid, ssid, ssid_len);
 1565         vap->iv_des_nssid = 1;
 1566 
 1567         memset(&sr, 0, sizeof(sr));
 1568         sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE;
 1569         sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
 1570         memcpy(sr.sr_ssid[0].ssid, ssid, ssid_len);
 1571         sr.sr_ssid[0].len = ssid_len;
 1572         sr.sr_nssid = 1;
 1573 
 1574         return ieee80211_scanreq(vap, &sr);
 1575 }
 1576 
 1577 static __noinline int
 1578 ieee80211_ioctl_setmlme(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1579 {
 1580         struct ieee80211req_mlme mlme;
 1581         int error;
 1582 
 1583         if (ireq->i_len != sizeof(mlme))
 1584                 return EINVAL;
 1585         error = copyin(ireq->i_data, &mlme, sizeof(mlme));
 1586         if (error)
 1587                 return error;
 1588         if  (vap->iv_opmode == IEEE80211_M_STA &&
 1589             mlme.im_op == IEEE80211_MLME_ASSOC)
 1590                 return setmlme_assoc_sta(vap, mlme.im_macaddr,
 1591                     vap->iv_des_ssid[0].len, vap->iv_des_ssid[0].ssid);
 1592         else if ((vap->iv_opmode == IEEE80211_M_IBSS || 
 1593             vap->iv_opmode == IEEE80211_M_AHDEMO) && 
 1594             mlme.im_op == IEEE80211_MLME_ASSOC)
 1595                 return setmlme_assoc_adhoc(vap, mlme.im_macaddr,
 1596                     mlme.im_ssid_len, mlme.im_ssid);
 1597         else
 1598                 return setmlme_common(vap, mlme.im_op,
 1599                     mlme.im_macaddr, mlme.im_reason);
 1600 }
 1601 
 1602 static __noinline int
 1603 ieee80211_ioctl_macmac(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1604 {
 1605         uint8_t mac[IEEE80211_ADDR_LEN];
 1606         const struct ieee80211_aclator *acl = vap->iv_acl;
 1607         int error;
 1608 
 1609         if (ireq->i_len != sizeof(mac))
 1610                 return EINVAL;
 1611         error = copyin(ireq->i_data, mac, ireq->i_len);
 1612         if (error)
 1613                 return error;
 1614         if (acl == NULL) {
 1615                 acl = ieee80211_aclator_get("mac");
 1616                 if (acl == NULL || !acl->iac_attach(vap))
 1617                         return EINVAL;
 1618                 vap->iv_acl = acl;
 1619         }
 1620         if (ireq->i_type == IEEE80211_IOC_ADDMAC)
 1621                 acl->iac_add(vap, mac);
 1622         else
 1623                 acl->iac_remove(vap, mac);
 1624         return 0;
 1625 }
 1626 
 1627 static __noinline int
 1628 ieee80211_ioctl_setmaccmd(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1629 {
 1630         const struct ieee80211_aclator *acl = vap->iv_acl;
 1631 
 1632         switch (ireq->i_val) {
 1633         case IEEE80211_MACCMD_POLICY_OPEN:
 1634         case IEEE80211_MACCMD_POLICY_ALLOW:
 1635         case IEEE80211_MACCMD_POLICY_DENY:
 1636         case IEEE80211_MACCMD_POLICY_RADIUS:
 1637                 if (acl == NULL) {
 1638                         acl = ieee80211_aclator_get("mac");
 1639                         if (acl == NULL || !acl->iac_attach(vap))
 1640                                 return EINVAL;
 1641                         vap->iv_acl = acl;
 1642                 }
 1643                 acl->iac_setpolicy(vap, ireq->i_val);
 1644                 break;
 1645         case IEEE80211_MACCMD_FLUSH:
 1646                 if (acl != NULL)
 1647                         acl->iac_flush(vap);
 1648                 /* NB: silently ignore when not in use */
 1649                 break;
 1650         case IEEE80211_MACCMD_DETACH:
 1651                 if (acl != NULL) {
 1652                         vap->iv_acl = NULL;
 1653                         acl->iac_detach(vap);
 1654                 }
 1655                 break;
 1656         default:
 1657                 if (acl == NULL)
 1658                         return EINVAL;
 1659                 else
 1660                         return acl->iac_setioctl(vap, ireq);
 1661         }
 1662         return 0;
 1663 }
 1664 
 1665 static __noinline int
 1666 ieee80211_ioctl_setchanlist(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1667 {
 1668         struct ieee80211com *ic = vap->iv_ic;
 1669         uint8_t *chanlist, *list;
 1670         int i, nchan, maxchan, error;
 1671 
 1672         if (ireq->i_len > sizeof(ic->ic_chan_active))
 1673                 ireq->i_len = sizeof(ic->ic_chan_active);
 1674         list = malloc(ireq->i_len + IEEE80211_CHAN_BYTES, M_TEMP,
 1675             M_NOWAIT | M_ZERO);
 1676         if (list == NULL)
 1677                 return ENOMEM;
 1678         error = copyin(ireq->i_data, list, ireq->i_len);
 1679         if (error) {
 1680                 free(list, M_TEMP);
 1681                 return error;
 1682         }
 1683         nchan = 0;
 1684         chanlist = list + ireq->i_len;          /* NB: zero'd already */
 1685         maxchan = ireq->i_len * NBBY;
 1686         for (i = 0; i < ic->ic_nchans; i++) {
 1687                 const struct ieee80211_channel *c = &ic->ic_channels[i];
 1688                 /*
 1689                  * Calculate the intersection of the user list and the
 1690                  * available channels so users can do things like specify
 1691                  * 1-255 to get all available channels.
 1692                  */
 1693                 if (c->ic_ieee < maxchan && isset(list, c->ic_ieee)) {
 1694                         setbit(chanlist, c->ic_ieee);
 1695                         nchan++;
 1696                 }
 1697         }
 1698         if (nchan == 0) {
 1699                 free(list, M_TEMP);
 1700                 return EINVAL;
 1701         }
 1702         if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&    /* XXX */
 1703             isclr(chanlist, ic->ic_bsschan->ic_ieee))
 1704                 ic->ic_bsschan = IEEE80211_CHAN_ANYC;
 1705         memcpy(ic->ic_chan_active, chanlist, IEEE80211_CHAN_BYTES);
 1706         ieee80211_scan_flush(vap);
 1707         free(list, M_TEMP);
 1708         return ENETRESET;
 1709 }
 1710 
 1711 static __noinline int
 1712 ieee80211_ioctl_setstastats(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1713 {
 1714         struct ieee80211_node *ni;
 1715         uint8_t macaddr[IEEE80211_ADDR_LEN];
 1716         int error;
 1717 
 1718         /*
 1719          * NB: we could copyin ieee80211req_sta_stats so apps
 1720          *     could make selective changes but that's overkill;
 1721          *     just clear all stats for now.
 1722          */
 1723         if (ireq->i_len < IEEE80211_ADDR_LEN)
 1724                 return EINVAL;
 1725         error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
 1726         if (error != 0)
 1727                 return error;
 1728         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr);
 1729         if (ni == NULL)
 1730                 return ENOENT;
 1731         /* XXX require ni_vap == vap? */
 1732         memset(&ni->ni_stats, 0, sizeof(ni->ni_stats));
 1733         ieee80211_free_node(ni);
 1734         return 0;
 1735 }
 1736 
 1737 static __noinline int
 1738 ieee80211_ioctl_setstatxpow(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1739 {
 1740         struct ieee80211_node *ni;
 1741         struct ieee80211req_sta_txpow txpow;
 1742         int error;
 1743 
 1744         if (ireq->i_len != sizeof(txpow))
 1745                 return EINVAL;
 1746         error = copyin(ireq->i_data, &txpow, sizeof(txpow));
 1747         if (error != 0)
 1748                 return error;
 1749         ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, txpow.it_macaddr);
 1750         if (ni == NULL)
 1751                 return ENOENT;
 1752         ni->ni_txpower = txpow.it_txpow;
 1753         ieee80211_free_node(ni);
 1754         return error;
 1755 }
 1756 
 1757 static __noinline int
 1758 ieee80211_ioctl_setwmeparam(struct ieee80211vap *vap, struct ieee80211req *ireq)
 1759 {
 1760         struct ieee80211com *ic = vap->iv_ic;
 1761         struct ieee80211_wme_state *wme = &ic->ic_wme;
 1762         struct wmeParams *wmep, *chanp;
 1763         int isbss, ac;
 1764 
 1765         if ((ic->ic_caps & IEEE80211_C_WME) == 0)
 1766                 return EOPNOTSUPP;
 1767 
 1768         isbss = (ireq->i_len & IEEE80211_WMEPARAM_BSS);
 1769         ac = (ireq->i_len & IEEE80211_WMEPARAM_VAL);
 1770         if (ac >= WME_NUM_AC)
 1771                 ac = WME_AC_BE;
 1772         if (isbss) {
 1773                 chanp = &wme->wme_bssChanParams.cap_wmeParams[ac];
 1774                 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac];
 1775         } else {
 1776                 chanp = &wme->wme_chanParams.cap_wmeParams[ac];
 1777                 wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac];
 1778         }
 1779         switch (ireq->i_type) {
 1780         case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
 1781                 if (isbss) {
 1782                         wmep->wmep_logcwmin = ireq->i_val;
 1783                         if ((wme->wme_flags & WME_F_AGGRMODE) == 0)
 1784                                 chanp->wmep_logcwmin = ireq->i_val;
 1785                 } else {
 1786                         wmep->wmep_logcwmin = chanp->wmep_logcwmin =
 1787                                 ireq->i_val;
 1788                 }
 1789                 break;
 1790         case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
 1791                 if (isbss) {
 1792                         wmep->wmep_logcwmax = ireq->i_val;
 1793                         if ((wme->wme_flags & WME_F_AGGRMODE) == 0)
 1794                                 chanp->wmep_logcwmax = ireq->i_val;
 1795                 } else {
 1796                         wmep->wmep_logcwmax = chanp->wmep_logcwmax =
 1797                                 ireq->i_val;
 1798                 }
 1799                 break;
 1800         case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
 1801                 if (isbss) {
 1802                         wmep->wmep_aifsn = ireq->i_val;
 1803                         if ((wme->wme_flags & WME_F_AGGRMODE) == 0)
 1804                                 chanp->wmep_aifsn = ireq->i_val;
 1805                 } else {
 1806                         wmep->wmep_aifsn = chanp->wmep_aifsn = ireq->i_val;
 1807                 }
 1808                 break;
 1809         case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
 1810                 if (isbss) {
 1811                         wmep->wmep_txopLimit = ireq->i_val;
 1812                         if ((wme->wme_flags & WME_F_AGGRMODE) == 0)
 1813                                 chanp->wmep_txopLimit = ireq->i_val;
 1814                 } else {
 1815                         wmep->wmep_txopLimit = chanp->wmep_txopLimit =
 1816                                 ireq->i_val;
 1817                 }
 1818                 break;
 1819         case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
 1820                 wmep->wmep_acm = ireq->i_val;
 1821                 if ((wme->wme_flags & WME_F_AGGRMODE) == 0)
 1822                         chanp->wmep_acm = ireq->i_val;
 1823                 break;
 1824         case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (!bss only)*/
 1825                 wmep->wmep_noackPolicy = chanp->wmep_noackPolicy =
 1826                         (ireq->i_val) == 0;
 1827                 break;
 1828         }
 1829         ieee80211_wme_updateparams(vap);
 1830         return 0;
 1831 }
 1832 
 1833 static int
 1834 find11gchannel(struct ieee80211com *ic, int start, int freq)
 1835 {
 1836         const struct ieee80211_channel *c;
 1837         int i;
 1838 
 1839         for (i = start+1; i < ic->ic_nchans; i++) {
 1840                 c = &ic->ic_channels[i];
 1841                 if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
 1842                         return 1;
 1843         }
 1844         /* NB: should not be needed but in case things are mis-sorted */
 1845         for (i = 0; i < start; i++) {
 1846                 c = &ic->ic_channels[i];
 1847                 if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
 1848                         return 1;
 1849         }
 1850         return 0;
 1851 }
 1852 
 1853 static struct ieee80211_channel *
 1854 findchannel(struct ieee80211com *ic, int ieee, int mode)
 1855 {
 1856         static const u_int chanflags[IEEE80211_MODE_MAX] = {
 1857             [IEEE80211_MODE_AUTO]       = 0,
 1858             [IEEE80211_MODE_11A]        = IEEE80211_CHAN_A,
 1859             [IEEE80211_MODE_11B]        = IEEE80211_CHAN_B,
 1860             [IEEE80211_MODE_11G]        = IEEE80211_CHAN_G,
 1861             [IEEE80211_MODE_FH]         = IEEE80211_CHAN_FHSS,
 1862             [IEEE80211_MODE_TURBO_A]    = IEEE80211_CHAN_108A,
 1863             [IEEE80211_MODE_TURBO_G]    = IEEE80211_CHAN_108G,
 1864             [IEEE80211_MODE_STURBO_A]   = IEEE80211_CHAN_STURBO,
 1865             [IEEE80211_MODE_HALF]       = IEEE80211_CHAN_HALF,
 1866             [IEEE80211_MODE_QUARTER]    = IEEE80211_CHAN_QUARTER,
 1867             /* NB: handled specially below */
 1868             [IEEE80211_MODE_11NA]       = IEEE80211_CHAN_A,
 1869             [IEEE80211_MODE_11NG]       = IEEE80211_CHAN_G,
 1870         };
 1871         u_int modeflags;
 1872         int i;
 1873 
 1874         modeflags = chanflags[mode];
 1875         for (i = 0; i < ic->ic_nchans; i++) {
 1876                 struct ieee80211_channel *c = &ic->ic_channels[i];
 1877 
 1878                 if (c->ic_ieee != ieee)
 1879                         continue;
 1880                 if (mode == IEEE80211_MODE_AUTO) {
 1881                         /* ignore turbo channels for autoselect */
 1882                         if (IEEE80211_IS_CHAN_TURBO(c))
 1883                                 continue;
 1884                         /*
 1885                          * XXX special-case 11b/g channels so we
 1886                          *     always select the g channel if both
 1887                          *     are present.
 1888                          * XXX prefer HT to non-HT?
 1889                          */
 1890                         if (!IEEE80211_IS_CHAN_B(c) ||
 1891                             !find11gchannel(ic, i, c->ic_freq))
 1892                                 return c;
 1893                 } else {
 1894                         /* must check HT specially */
 1895                         if ((mode == IEEE80211_MODE_11NA ||
 1896                             mode == IEEE80211_MODE_11NG) &&
 1897                             !IEEE80211_IS_CHAN_HT(c))
 1898                                 continue;
 1899                         if ((c->ic_flags & modeflags) == modeflags)
 1900                                 return c;
 1901                 }
 1902         }
 1903         return NULL;
 1904 }
 1905 
 1906 /*
 1907  * Check the specified against any desired mode (aka netband).
 1908  * This is only used (presently) when operating in hostap mode
 1909  * to enforce consistency.
 1910  */
 1911 static int
 1912 check_mode_consistency(const struct ieee80211_channel *c, int mode)
 1913 {
 1914         KASSERT(c != IEEE80211_CHAN_ANYC, ("oops, no channel"));
 1915 
 1916         switch (mode) {
 1917         case IEEE80211_MODE_11B:
 1918                 return (IEEE80211_IS_CHAN_B(c));
 1919         case IEEE80211_MODE_11G:
 1920                 return (IEEE80211_IS_CHAN_ANYG(c) && !IEEE80211_IS_CHAN_HT(c));
 1921         case IEEE80211_MODE_11A:
 1922                 return (IEEE80211_IS_CHAN_A(c) && !IEEE80211_IS_CHAN_HT(c));
 1923         case IEEE80211_MODE_STURBO_A:
 1924                 return (IEEE80211_IS_CHAN_STURBO(c));
 1925         case IEEE80211_MODE_11NA:
 1926                 return (IEEE80211_IS_CHAN_HTA(c));
 1927         case IEEE80211_MODE_11NG:
 1928                 return (IEEE80211_IS_CHAN_HTG(c));
 1929         }
 1930         return 1;
 1931 
 1932 }
 1933 
 1934 /*
 1935  * Common code to set the current channel.  If the device
 1936  * is up and running this may result in an immediate channel
 1937  * change or a kick of the state machine.
 1938  */
 1939 static int
 1940 setcurchan(struct ieee80211vap *vap, struct ieee80211_channel *c)
 1941 {
 1942         struct ieee80211com *ic = vap->iv_ic;
 1943         int error;
 1944 
 1945         if (c != IEEE80211_CHAN_ANYC) {
 1946                 if (IEEE80211_IS_CHAN_RADAR(c))
 1947                         return EBUSY;   /* XXX better code? */
 1948                 if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
 1949                         if (IEEE80211_IS_CHAN_NOHOSTAP(c))
 1950                                 return EINVAL;
 1951                         if (!check_mode_consistency(c, vap->iv_des_mode))
 1952                                 return EINVAL;
 1953                 } else if (vap->iv_opmode == IEEE80211_M_IBSS) {
 1954                         if (IEEE80211_IS_CHAN_NOADHOC(c))
 1955                                 return EINVAL;
 1956                 }
 1957                 if (vap->iv_state == IEEE80211_S_RUN &&
 1958                     vap->iv_bss->ni_chan == c)
 1959                         return 0;       /* NB: nothing to do */
 1960         }
 1961         vap->iv_des_chan = c;
 1962 
 1963         error = 0;
 1964         if (vap->iv_opmode == IEEE80211_M_MONITOR &&
 1965             vap->iv_des_chan != IEEE80211_CHAN_ANYC) {
 1966                 /*
 1967                  * Monitor mode can switch directly.
 1968                  */
 1969                 if (IFNET_IS_UP_RUNNING(vap->iv_ifp)) {
 1970                         /* XXX need state machine for other vap's to follow */
 1971                         ieee80211_setcurchan(ic, vap->iv_des_chan);
 1972                         vap->iv_bss->ni_chan = ic->ic_curchan;
 1973                 } else
 1974                         ic->ic_curchan = vap->iv_des_chan;
 1975                         ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
 1976         } else {
 1977                 /*
 1978                  * Need to go through the state machine in case we
 1979                  * need to reassociate or the like.  The state machine
 1980                  * will pickup the desired channel and avoid scanning.
 1981                  */
 1982                 if (IS_UP_AUTO(vap))
 1983                         ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
 1984                 else if (vap->iv_des_chan != IEEE80211_CHAN_ANYC) {
 1985                         /*
 1986                          * When not up+running and a real channel has
 1987                          * been specified fix the current channel so
 1988                          * there is immediate feedback; e.g. via ifconfig.
 1989                          */
 1990                         ic->ic_curchan = vap->iv_des_chan;
 1991                         ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
 1992                 }
 1993         }
 1994         return error;
 1995 }
 1996 
 1997 /*
 1998  * Old api for setting the current channel; this is
 1999  * deprecated because channel numbers are ambiguous.
 2000  */
 2001 static __noinline int
 2002 ieee80211_ioctl_setchannel(struct ieee80211vap *vap,
 2003         const struct ieee80211req *ireq)
 2004 {
 2005         struct ieee80211com *ic = vap->iv_ic;
 2006         struct ieee80211_channel *c;
 2007 
 2008         /* XXX 0xffff overflows 16-bit signed */
 2009         if (ireq->i_val == 0 ||
 2010             ireq->i_val == (int16_t) IEEE80211_CHAN_ANY) {
 2011                 c = IEEE80211_CHAN_ANYC;
 2012         } else {
 2013                 struct ieee80211_channel *c2;
 2014 
 2015                 c = findchannel(ic, ireq->i_val, vap->iv_des_mode);
 2016                 if (c == NULL) {
 2017                         c = findchannel(ic, ireq->i_val,
 2018                                 IEEE80211_MODE_AUTO);
 2019                         if (c == NULL)
 2020                                 return EINVAL;
 2021                 }
 2022                 /*
 2023                  * Fine tune channel selection based on desired mode:
 2024                  *   if 11b is requested, find the 11b version of any
 2025                  *      11g channel returned,
 2026                  *   if static turbo, find the turbo version of any
 2027                  *      11a channel return,
 2028                  *   if 11na is requested, find the ht version of any
 2029                  *      11a channel returned,
 2030                  *   if 11ng is requested, find the ht version of any
 2031                  *      11g channel returned,
 2032                  *   otherwise we should be ok with what we've got.
 2033                  */
 2034                 switch (vap->iv_des_mode) {
 2035                 case IEEE80211_MODE_11B:
 2036                         if (IEEE80211_IS_CHAN_ANYG(c)) {
 2037                                 c2 = findchannel(ic, ireq->i_val,
 2038                                         IEEE80211_MODE_11B);
 2039                                 /* NB: should not happen, =>'s 11g w/o 11b */
 2040                                 if (c2 != NULL)
 2041                                         c = c2;
 2042                         }
 2043                         break;
 2044                 case IEEE80211_MODE_TURBO_A:
 2045                         if (IEEE80211_IS_CHAN_A(c)) {
 2046                                 c2 = findchannel(ic, ireq->i_val,
 2047                                         IEEE80211_MODE_TURBO_A);
 2048                                 if (c2 != NULL)
 2049                                         c = c2;
 2050                         }
 2051                         break;
 2052                 case IEEE80211_MODE_11NA:
 2053                         if (IEEE80211_IS_CHAN_A(c)) {
 2054                                 c2 = findchannel(ic, ireq->i_val,
 2055                                         IEEE80211_MODE_11NA);
 2056                                 if (c2 != NULL)
 2057                                         c = c2;
 2058                         }
 2059                         break;
 2060                 case IEEE80211_MODE_11NG:
 2061                         if (IEEE80211_IS_CHAN_ANYG(c)) {
 2062                                 c2 = findchannel(ic, ireq->i_val,
 2063                                         IEEE80211_MODE_11NG);
 2064                                 if (c2 != NULL)
 2065                                         c = c2;
 2066                         }
 2067                         break;
 2068                 default:                /* NB: no static turboG */
 2069                         break;
 2070                 }
 2071         }
 2072         return setcurchan(vap, c);
 2073 }
 2074 
 2075 /*
 2076  * New/current api for setting the current channel; a complete
 2077  * channel description is provide so there is no ambiguity in
 2078  * identifying the channel.
 2079  */
 2080 static __noinline int
 2081 ieee80211_ioctl_setcurchan(struct ieee80211vap *vap,
 2082         const struct ieee80211req *ireq)
 2083 {
 2084         struct ieee80211com *ic = vap->iv_ic;
 2085         struct ieee80211_channel chan, *c;
 2086         int error;
 2087 
 2088         if (ireq->i_len != sizeof(chan))
 2089                 return EINVAL;
 2090         error = copyin(ireq->i_data, &chan, sizeof(chan));
 2091         if (error != 0)
 2092                 return error;
 2093         /* XXX 0xffff overflows 16-bit signed */
 2094         if (chan.ic_freq == 0 || chan.ic_freq == IEEE80211_CHAN_ANY) {
 2095                 c = IEEE80211_CHAN_ANYC;
 2096         } else {
 2097                 c = ieee80211_find_channel(ic, chan.ic_freq, chan.ic_flags);
 2098                 if (c == NULL)
 2099                         return EINVAL;
 2100         }
 2101         return setcurchan(vap, c);
 2102 }
 2103 
 2104 static __noinline int
 2105 ieee80211_ioctl_setregdomain(struct ieee80211vap *vap,
 2106         const struct ieee80211req *ireq)
 2107 {
 2108         struct ieee80211_regdomain_req *reg;
 2109         int nchans, error;
 2110 
 2111         nchans = 1 + ((ireq->i_len - sizeof(struct ieee80211_regdomain_req)) /
 2112             sizeof(struct ieee80211_channel));
 2113         if (!(1 <= nchans && nchans <= IEEE80211_CHAN_MAX)) {
 2114                 IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL,
 2115                     "%s: bad # chans, i_len %d nchans %d\n", __func__,
 2116                     ireq->i_len, nchans);
 2117                 return EINVAL;
 2118         }
 2119         reg = (struct ieee80211_regdomain_req *)
 2120             malloc(IEEE80211_REGDOMAIN_SIZE(nchans), M_TEMP, M_NOWAIT);
 2121         if (reg == NULL) {
 2122                 IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL,
 2123                     "%s: no memory, nchans %d\n", __func__, nchans);
 2124                 return ENOMEM;
 2125         }
 2126         error = copyin(ireq->i_data, reg, IEEE80211_REGDOMAIN_SIZE(nchans));
 2127         if (error == 0) {
 2128                 /* NB: validate inline channel count against storage size */
 2129                 if (reg->chaninfo.ic_nchans != nchans) {
 2130                         IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL,
 2131                             "%s: chan cnt mismatch, %d != %d\n", __func__,
 2132                                 reg->chaninfo.ic_nchans, nchans);
 2133                         error = EINVAL;
 2134                 } else
 2135                         error = ieee80211_setregdomain(vap, reg);
 2136         }
 2137         free(reg, M_TEMP);
 2138 
 2139         return (error == 0 ? ENETRESET : error);
 2140 }
 2141 
 2142 static int
 2143 ieee80211_ioctl_setroam(struct ieee80211vap *vap,
 2144         const struct ieee80211req *ireq)
 2145 {
 2146         if (ireq->i_len != sizeof(vap->iv_roamparms))
 2147                 return EINVAL;
 2148         /* XXX validate params */
 2149         /* XXX? ENETRESET to push to device? */
 2150         return copyin(ireq->i_data, vap->iv_roamparms,
 2151             sizeof(vap->iv_roamparms));
 2152 }
 2153 
 2154 static int
 2155 checkrate(const struct ieee80211_rateset *rs, int rate)
 2156 {
 2157         int i;
 2158 
 2159         if (rate == IEEE80211_FIXED_RATE_NONE)
 2160                 return 1;
 2161         for (i = 0; i < rs->rs_nrates; i++)
 2162                 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate)
 2163                         return 1;
 2164         return 0;
 2165 }
 2166 
 2167 static int
 2168 checkmcs(int mcs)
 2169 {
 2170         if (mcs == IEEE80211_FIXED_RATE_NONE)
 2171                 return 1;
 2172         if ((mcs & IEEE80211_RATE_MCS) == 0)    /* MCS always have 0x80 set */
 2173                 return 0;
 2174         return (mcs & 0x7f) <= 15;      /* XXX could search ht rate set */
 2175 }
 2176 
 2177 static __noinline int
 2178 ieee80211_ioctl_settxparams(struct ieee80211vap *vap,
 2179         const struct ieee80211req *ireq)
 2180 {
 2181         struct ieee80211com *ic = vap->iv_ic;
 2182         struct ieee80211_txparams_req parms;    /* XXX stack use? */
 2183         struct ieee80211_txparam *src, *dst;
 2184         const struct ieee80211_rateset *rs;
 2185         int error, mode, changed, is11n, nmodes;
 2186 
 2187         /* NB: accept short requests for backwards compat */
 2188         if (ireq->i_len > sizeof(parms))
 2189                 return EINVAL;
 2190         error = copyin(ireq->i_data, &parms, ireq->i_len);
 2191         if (error != 0)
 2192                 return error;
 2193         nmodes = ireq->i_len / sizeof(struct ieee80211_txparam);
 2194         changed = 0;
 2195         /* validate parameters and check if anything changed */
 2196         for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) {
 2197                 if (isclr(ic->ic_modecaps, mode))
 2198                         continue;
 2199                 src = &parms.params[mode];
 2200                 dst = &vap->iv_txparms[mode];
 2201                 rs = &ic->ic_sup_rates[mode];   /* NB: 11n maps to legacy */
 2202                 is11n = (mode == IEEE80211_MODE_11NA ||
 2203                          mode == IEEE80211_MODE_11NG);
 2204                 if (src->ucastrate != dst->ucastrate) {
 2205                         if (!checkrate(rs, src->ucastrate) &&
 2206                             (!is11n || !checkmcs(src->ucastrate)))
 2207                                 return EINVAL;
 2208                         changed++;
 2209                 }
 2210                 if (src->mcastrate != dst->mcastrate) {
 2211                         if (!checkrate(rs, src->mcastrate) &&
 2212                             (!is11n || !checkmcs(src->mcastrate)))
 2213                                 return EINVAL;
 2214                         changed++;
 2215                 }
 2216                 if (src->mgmtrate != dst->mgmtrate) {
 2217                         if (!checkrate(rs, src->mgmtrate) &&
 2218                             (!is11n || !checkmcs(src->mgmtrate)))
 2219                                 return EINVAL;
 2220                         changed++;
 2221                 }
 2222                 if (src->maxretry != dst->maxretry)     /* NB: no bounds */
 2223                         changed++;
 2224         }
 2225         if (changed) {
 2226                 /*
 2227                  * Copy new parameters in place and notify the
 2228                  * driver so it can push state to the device.
 2229                  */
 2230                 for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) {
 2231                         if (isset(ic->ic_modecaps, mode))
 2232                                 vap->iv_txparms[mode] = parms.params[mode];
 2233                 }
 2234                 /* XXX could be more intelligent,
 2235                    e.g. don't reset if setting not being used */
 2236                 return ENETRESET;
 2237         }
 2238         return 0;
 2239 }
 2240 
 2241 /*
 2242  * Application Information Element support.
 2243  */
 2244 static int
 2245 setappie(struct ieee80211_appie **aie, const struct ieee80211req *ireq)
 2246 {
 2247         struct ieee80211_appie *app = *aie;
 2248         struct ieee80211_appie *napp;
 2249         int error;
 2250 
 2251         if (ireq->i_len == 0) {         /* delete any existing ie */
 2252                 if (app != NULL) {
 2253                         *aie = NULL;    /* XXX racey */
 2254                         free(app, M_80211_NODE_IE);
 2255                 }
 2256                 return 0;
 2257         }
 2258         if (!(2 <= ireq->i_len && ireq->i_len <= IEEE80211_MAX_APPIE))
 2259                 return EINVAL;
 2260         /*
 2261          * Allocate a new appie structure and copy in the user data.
 2262          * When done swap in the new structure.  Note that we do not
 2263          * guard against users holding a ref to the old structure;
 2264          * this must be handled outside this code.
 2265          *
 2266          * XXX bad bad bad
 2267          */
 2268         napp = (struct ieee80211_appie *) malloc(
 2269             sizeof(struct ieee80211_appie) + ireq->i_len, M_80211_NODE_IE, M_NOWAIT);
 2270         if (napp == NULL)
 2271                 return ENOMEM;
 2272         /* XXX holding ic lock */
 2273         error = copyin(ireq->i_data, napp->ie_data, ireq->i_len);
 2274         if (error) {
 2275                 free(napp, M_80211_NODE_IE);
 2276                 return error;
 2277         }
 2278         napp->ie_len = ireq->i_len;
 2279         *aie = napp;
 2280         if (app != NULL)
 2281                 free(app, M_80211_NODE_IE);
 2282         return 0;
 2283 }
 2284 
 2285 static void
 2286 setwparsnie(struct ieee80211vap *vap, uint8_t *ie, int space)
 2287 {
 2288         /* validate data is present as best we can */
 2289         if (space == 0 || 2+ie[1] > space)
 2290                 return;
 2291         if (ie[0] == IEEE80211_ELEMID_VENDOR)
 2292                 vap->iv_wpa_ie = ie;
 2293         else if (ie[0] == IEEE80211_ELEMID_RSN)
 2294                 vap->iv_rsn_ie = ie;
 2295 }
 2296 
 2297 static __noinline int
 2298 ieee80211_ioctl_setappie_locked(struct ieee80211vap *vap,
 2299         const struct ieee80211req *ireq, int fc0)
 2300 {
 2301         int error;
 2302 
 2303         IEEE80211_LOCK_ASSERT(vap->iv_ic);
 2304 
 2305         switch (fc0 & IEEE80211_FC0_SUBTYPE_MASK) {
 2306         case IEEE80211_FC0_SUBTYPE_BEACON:
 2307                 if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
 2308                     vap->iv_opmode != IEEE80211_M_IBSS) {
 2309                         error = EINVAL;
 2310                         break;
 2311                 }
 2312                 error = setappie(&vap->iv_appie_beacon, ireq);
 2313                 if (error == 0)
 2314                         ieee80211_beacon_notify(vap, IEEE80211_BEACON_APPIE);
 2315                 break;
 2316         case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
 2317                 error = setappie(&vap->iv_appie_proberesp, ireq);
 2318                 break;
 2319         case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
 2320                 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
 2321                         error = setappie(&vap->iv_appie_assocresp, ireq);
 2322                 else
 2323                         error = EINVAL;
 2324                 break;
 2325         case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
 2326                 error = setappie(&vap->iv_appie_probereq, ireq);
 2327                 break;
 2328         case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
 2329                 if (vap->iv_opmode == IEEE80211_M_STA)
 2330                         error = setappie(&vap->iv_appie_assocreq, ireq);
 2331                 else
 2332                         error = EINVAL;
 2333                 break;
 2334         case (IEEE80211_APPIE_WPA & IEEE80211_FC0_SUBTYPE_MASK):
 2335                 error = setappie(&vap->iv_appie_wpa, ireq);
 2336                 if (error == 0) {
 2337                         /*
 2338                          * Must split single blob of data into separate
 2339                          * WPA and RSN ie's because they go in different
 2340                          * locations in the mgt frames.
 2341                          * XXX use IEEE80211_IOC_WPA2 so user code does split
 2342                          */
 2343                         vap->iv_wpa_ie = NULL;
 2344                         vap->iv_rsn_ie = NULL;
 2345                         if (vap->iv_appie_wpa != NULL) {
 2346                                 struct ieee80211_appie *appie =
 2347                                     vap->iv_appie_wpa;
 2348                                 uint8_t *data = appie->ie_data;
 2349 
 2350                                 /* XXX ie length validate is painful, cheat */
 2351                                 setwparsnie(vap, data, appie->ie_len);
 2352                                 setwparsnie(vap, data + 2 + data[1],
 2353                                     appie->ie_len - (2 + data[1]));
 2354                         }
 2355                         if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
 2356                             vap->iv_opmode == IEEE80211_M_IBSS) {
 2357                                 /*
 2358                                  * Must rebuild beacon frame as the update
 2359                                  * mechanism doesn't handle WPA/RSN ie's.
 2360                                  * Could extend it but it doesn't normally
 2361                                  * change; this is just to deal with hostapd
 2362                                  * plumbing the ie after the interface is up.
 2363                                  */
 2364                                 error = ENETRESET;
 2365                         }
 2366                 }
 2367                 break;
 2368         default:
 2369                 error = EINVAL;
 2370                 break;
 2371         }
 2372         return error;
 2373 }
 2374 
 2375 static __noinline int
 2376 ieee80211_ioctl_setappie(struct ieee80211vap *vap,
 2377         const struct ieee80211req *ireq)
 2378 {
 2379         struct ieee80211com *ic = vap->iv_ic;
 2380         int error;
 2381         uint8_t fc0;
 2382 
 2383         fc0 = ireq->i_val & 0xff;
 2384         if ((fc0 & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
 2385                 return EINVAL;
 2386         /* NB: could check iv_opmode and reject but hardly worth the effort */
 2387         IEEE80211_LOCK(ic);
 2388         error = ieee80211_ioctl_setappie_locked(vap, ireq, fc0);
 2389         IEEE80211_UNLOCK(ic);
 2390         return error;
 2391 }
 2392 
 2393 static __noinline int
 2394 ieee80211_ioctl_chanswitch(struct ieee80211vap *vap, struct ieee80211req *ireq)
 2395 {
 2396         struct ieee80211com *ic = vap->iv_ic;
 2397         struct ieee80211_chanswitch_req csr;
 2398         struct ieee80211_channel *c;
 2399         int error;
 2400 
 2401         if (ireq->i_len != sizeof(csr))
 2402                 return EINVAL;
 2403         error = copyin(ireq->i_data, &csr, sizeof(csr));
 2404         if (error != 0)
 2405                 return error;
 2406         /* XXX adhoc mode not supported */
 2407         if (vap->iv_opmode != IEEE80211_M_HOSTAP ||
 2408             (vap->iv_flags & IEEE80211_F_DOTH) == 0)
 2409                 return EOPNOTSUPP;
 2410         c = ieee80211_find_channel(ic,
 2411             csr.csa_chan.ic_freq, csr.csa_chan.ic_flags);
 2412         if (c == NULL)
 2413                 return ENOENT;
 2414         IEEE80211_LOCK(ic);
 2415         if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0)
 2416                 ieee80211_csa_startswitch(ic, c, csr.csa_mode, csr.csa_count);
 2417         else if (csr.csa_count == 0)
 2418                 ieee80211_csa_cancelswitch(ic);
 2419         else
 2420                 error = EBUSY;
 2421         IEEE80211_UNLOCK(ic);
 2422         return error;
 2423 }
 2424 
 2425 static int
 2426 ieee80211_scanreq(struct ieee80211vap *vap, struct ieee80211_scan_req *sr)
 2427 {
 2428 #define IEEE80211_IOC_SCAN_FLAGS \
 2429         (IEEE80211_IOC_SCAN_NOPICK | IEEE80211_IOC_SCAN_ACTIVE | \
 2430          IEEE80211_IOC_SCAN_PICK1ST | IEEE80211_IOC_SCAN_BGSCAN | \
 2431          IEEE80211_IOC_SCAN_ONCE | IEEE80211_IOC_SCAN_NOBCAST | \
 2432          IEEE80211_IOC_SCAN_NOJOIN | IEEE80211_IOC_SCAN_FLUSH | \
 2433          IEEE80211_IOC_SCAN_CHECK)
 2434         struct ieee80211com *ic = vap->iv_ic;
 2435         int error, i;
 2436 
 2437         /* convert duration */
 2438         if (sr->sr_duration == IEEE80211_IOC_SCAN_FOREVER)
 2439                 sr->sr_duration = IEEE80211_SCAN_FOREVER;
 2440         else {
 2441                 if (sr->sr_duration < IEEE80211_IOC_SCAN_DURATION_MIN ||
 2442                     sr->sr_duration > IEEE80211_IOC_SCAN_DURATION_MAX)
 2443                         return EINVAL;
 2444                 sr->sr_duration = msecs_to_ticks(sr->sr_duration);
 2445                 if (sr->sr_duration < 1)
 2446                         sr->sr_duration = 1;
 2447         }
 2448         /* convert min/max channel dwell */
 2449         if (sr->sr_mindwell != 0) {
 2450                 sr->sr_mindwell = msecs_to_ticks(sr->sr_mindwell);
 2451                 if (sr->sr_mindwell < 1)
 2452                         sr->sr_mindwell = 1;
 2453         }
 2454         if (sr->sr_maxdwell != 0) {
 2455                 sr->sr_maxdwell = msecs_to_ticks(sr->sr_maxdwell);
 2456                 if (sr->sr_maxdwell < 1)
 2457                         sr->sr_maxdwell = 1;
 2458         }
 2459         /* NB: silently reduce ssid count to what is supported */
 2460         if (sr->sr_nssid > IEEE80211_SCAN_MAX_SSID)
 2461                 sr->sr_nssid = IEEE80211_SCAN_MAX_SSID;
 2462         for (i = 0; i < sr->sr_nssid; i++)
 2463                 if (sr->sr_ssid[i].len > IEEE80211_NWID_LEN)
 2464                         return EINVAL;
 2465         /* cleanse flags just in case, could reject if invalid flags */
 2466         sr->sr_flags &= IEEE80211_IOC_SCAN_FLAGS;
 2467         /*
 2468          * Add an implicit NOPICK if the vap is not marked UP.  This
 2469          * allows applications to scan without joining a bss (or picking
 2470          * a channel and setting up a bss) and without forcing manual
 2471          * roaming mode--you just need to mark the parent device UP.
 2472          */
 2473         if ((vap->iv_ifp->if_flags & IFF_UP) == 0)
 2474                 sr->sr_flags |= IEEE80211_IOC_SCAN_NOPICK;
 2475 
 2476         IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
 2477             "%s: flags 0x%x%s duration 0x%x mindwell %u maxdwell %u nssid %d\n",
 2478             __func__, sr->sr_flags,
 2479             (vap->iv_ifp->if_flags & IFF_UP) == 0 ? " (!IFF_UP)" : "",
 2480             sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell, sr->sr_nssid);
 2481         /*
 2482          * If we are in INIT state then the driver has never had a chance
 2483          * to setup hardware state to do a scan; we must use the state
 2484          * machine to get us up to the SCAN state but once we reach SCAN
 2485          * state we then want to use the supplied params.  Stash the
 2486          * parameters in the vap and mark IEEE80211_FEXT_SCANREQ; the
 2487          * state machines will recognize this and use the stashed params
 2488          * to issue the scan request.
 2489          *
 2490          * Otherwise just invoke the scan machinery directly.
 2491          */
 2492         IEEE80211_LOCK(ic);
 2493         if (vap->iv_state == IEEE80211_S_INIT) {
 2494                 /* NB: clobbers previous settings */
 2495                 vap->iv_scanreq_flags = sr->sr_flags;
 2496                 vap->iv_scanreq_duration = sr->sr_duration;
 2497                 vap->iv_scanreq_nssid = sr->sr_nssid;
 2498                 for (i = 0; i < sr->sr_nssid; i++) {
 2499                         vap->iv_scanreq_ssid[i].len = sr->sr_ssid[i].len;
 2500                         memcpy(vap->iv_scanreq_ssid[i].ssid,
 2501                             sr->sr_ssid[i].ssid, sr->sr_ssid[i].len);
 2502                 }
 2503                 vap->iv_flags_ext |= IEEE80211_FEXT_SCANREQ;
 2504                 IEEE80211_UNLOCK(ic);
 2505                 ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
 2506         } else {
 2507                 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
 2508                 IEEE80211_UNLOCK(ic);
 2509                 if (sr->sr_flags & IEEE80211_IOC_SCAN_CHECK) {
 2510                         error = ieee80211_check_scan(vap, sr->sr_flags,
 2511                             sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell,
 2512                             sr->sr_nssid,
 2513                             /* NB: cheat, we assume structures are compatible */
 2514                             (const struct ieee80211_scan_ssid *) &sr->sr_ssid[0]);
 2515                 } else {
 2516                         error = ieee80211_start_scan(vap, sr->sr_flags,
 2517                             sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell,
 2518                             sr->sr_nssid,
 2519                             /* NB: cheat, we assume structures are compatible */
 2520                             (const struct ieee80211_scan_ssid *) &sr->sr_ssid[0]);
 2521                 }
 2522                 if (error == 0)
 2523                         return EINPROGRESS;
 2524         }
 2525         return 0;
 2526 #undef IEEE80211_IOC_SCAN_FLAGS
 2527 }
 2528 
 2529 static __noinline int
 2530 ieee80211_ioctl_scanreq(struct ieee80211vap *vap, struct ieee80211req *ireq)
 2531 {
 2532         struct ieee80211com *ic = vap->iv_ic;
 2533         struct ieee80211_scan_req sr;           /* XXX off stack? */
 2534         int error;
 2535 
 2536         /* NB: parent must be running */
 2537         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
 2538                 return ENXIO;
 2539 
 2540         if (ireq->i_len != sizeof(sr))
 2541                 return EINVAL;
 2542         error = copyin(ireq->i_data, &sr, sizeof(sr));
 2543         if (error != 0)
 2544                 return error;
 2545         return ieee80211_scanreq(vap, &sr);
 2546 }
 2547 
 2548 static __noinline int
 2549 ieee80211_ioctl_setstavlan(struct ieee80211vap *vap, struct ieee80211req *ireq)
 2550 {
 2551         struct ieee80211_node *ni;
 2552         struct ieee80211req_sta_vlan vlan;
 2553         int error;
 2554 
 2555         if (ireq->i_len != sizeof(vlan))
 2556                 return EINVAL;
 2557         error = copyin(ireq->i_data, &vlan, sizeof(vlan));
 2558         if (error != 0)
 2559                 return error;
 2560         if (!IEEE80211_ADDR_EQ(vlan.sv_macaddr, zerobssid)) {
 2561                 ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
 2562                     vlan.sv_macaddr);
 2563                 if (ni == NULL)
 2564                         return ENOENT;
 2565         } else
 2566                 ni = ieee80211_ref_node(vap->iv_bss);
 2567         ni->ni_vlan = vlan.sv_vlan;
 2568         ieee80211_free_node(ni);
 2569         return error;
 2570 }
 2571 
 2572 static int
 2573 isvap11g(const struct ieee80211vap *vap)
 2574 {
 2575         const struct ieee80211_node *bss = vap->iv_bss;
 2576         return bss->ni_chan != IEEE80211_CHAN_ANYC &&
 2577             IEEE80211_IS_CHAN_ANYG(bss->ni_chan);
 2578 }
 2579 
 2580 static int
 2581 isvapht(const struct ieee80211vap *vap)
 2582 {
 2583         const struct ieee80211_node *bss = vap->iv_bss;
 2584         return bss->ni_chan != IEEE80211_CHAN_ANYC &&
 2585             IEEE80211_IS_CHAN_HT(bss->ni_chan);
 2586 }
 2587 
 2588 /*
 2589  * Dummy ioctl set handler so the linker set is defined.
 2590  */
 2591 static int
 2592 dummy_ioctl_set(struct ieee80211vap *vap, struct ieee80211req *ireq)
 2593 {
 2594         return ENOSYS;
 2595 }
 2596 IEEE80211_IOCTL_SET(dummy, dummy_ioctl_set);
 2597 
 2598 static int
 2599 ieee80211_ioctl_setdefault(struct ieee80211vap *vap, struct ieee80211req *ireq)
 2600 {
 2601         ieee80211_ioctl_setfunc * const *set;
 2602         int error;
 2603 
 2604         SET_FOREACH(set, ieee80211_ioctl_setset) {
 2605                 error = (*set)(vap, ireq);
 2606                 if (error != ENOSYS)
 2607                         return error;
 2608         }
 2609         return EINVAL;
 2610 }
 2611 
 2612 static __noinline int
 2613 ieee80211_ioctl_set80211(struct ieee80211vap *vap, u_long cmd, struct ieee80211req *ireq)
 2614 {
 2615         struct ieee80211com *ic = vap->iv_ic;
 2616         int error;
 2617         const struct ieee80211_authenticator *auth;
 2618         uint8_t tmpkey[IEEE80211_KEYBUF_SIZE];
 2619         char tmpssid[IEEE80211_NWID_LEN];
 2620         uint8_t tmpbssid[IEEE80211_ADDR_LEN];
 2621         struct ieee80211_key *k;
 2622         u_int kid;
 2623         uint32_t flags;
 2624 
 2625         error = 0;
 2626         switch (ireq->i_type) {
 2627         case IEEE80211_IOC_SSID:
 2628                 if (ireq->i_val != 0 ||
 2629                     ireq->i_len > IEEE80211_NWID_LEN)
 2630                         return EINVAL;
 2631                 error = copyin(ireq->i_data, tmpssid, ireq->i_len);
 2632                 if (error)
 2633                         break;
 2634                 memset(vap->iv_des_ssid[0].ssid, 0, IEEE80211_NWID_LEN);
 2635                 vap->iv_des_ssid[0].len = ireq->i_len;
 2636                 memcpy(vap->iv_des_ssid[0].ssid, tmpssid, ireq->i_len);
 2637                 vap->iv_des_nssid = (ireq->i_len > 0);
 2638                 error = ENETRESET;
 2639                 break;
 2640         case IEEE80211_IOC_WEP:
 2641                 switch (ireq->i_val) {
 2642                 case IEEE80211_WEP_OFF:
 2643                         vap->iv_flags &= ~IEEE80211_F_PRIVACY;
 2644                         vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
 2645                         break;
 2646                 case IEEE80211_WEP_ON:
 2647                         vap->iv_flags |= IEEE80211_F_PRIVACY;
 2648                         vap->iv_flags |= IEEE80211_F_DROPUNENC;
 2649                         break;
 2650                 case IEEE80211_WEP_MIXED:
 2651                         vap->iv_flags |= IEEE80211_F_PRIVACY;
 2652                         vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
 2653                         break;
 2654                 }
 2655                 error = ENETRESET;
 2656                 break;
 2657         case IEEE80211_IOC_WEPKEY:
 2658                 kid = (u_int) ireq->i_val;
 2659                 if (kid >= IEEE80211_WEP_NKID)
 2660                         return EINVAL;
 2661                 k = &vap->iv_nw_keys[kid];
 2662                 if (ireq->i_len == 0) {
 2663                         /* zero-len =>'s delete any existing key */
 2664                         (void) ieee80211_crypto_delkey(vap, k);
 2665                         break;
 2666                 }
 2667                 if (ireq->i_len > sizeof(tmpkey))
 2668                         return EINVAL;
 2669                 memset(tmpkey, 0, sizeof(tmpkey));
 2670                 error = copyin(ireq->i_data, tmpkey, ireq->i_len);
 2671                 if (error)
 2672                         break;
 2673                 ieee80211_key_update_begin(vap);
 2674                 k->wk_keyix = kid;      /* NB: force fixed key id */
 2675                 if (ieee80211_crypto_newkey(vap, IEEE80211_CIPHER_WEP,
 2676                     IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV, k)) {
 2677                         k->wk_keylen = ireq->i_len;
 2678                         memcpy(k->wk_key, tmpkey, sizeof(tmpkey));
 2679                         IEEE80211_ADDR_COPY(k->wk_macaddr, vap->iv_myaddr);
 2680                         if  (!ieee80211_crypto_setkey(vap, k))
 2681                                 error = EINVAL;
 2682                 } else
 2683                         error = EINVAL;
 2684                 ieee80211_key_update_end(vap);
 2685                 break;
 2686         case IEEE80211_IOC_WEPTXKEY:
 2687                 kid = (u_int) ireq->i_val;
 2688                 if (kid >= IEEE80211_WEP_NKID &&
 2689                     (uint16_t) kid != IEEE80211_KEYIX_NONE)
 2690                         return EINVAL;
 2691                 vap->iv_def_txkey = kid;
 2692                 break;
 2693         case IEEE80211_IOC_AUTHMODE:
 2694                 switch (ireq->i_val) {
 2695                 case IEEE80211_AUTH_WPA:
 2696                 case IEEE80211_AUTH_8021X:      /* 802.1x */
 2697                 case IEEE80211_AUTH_OPEN:       /* open */
 2698                 case IEEE80211_AUTH_SHARED:     /* shared-key */
 2699                 case IEEE80211_AUTH_AUTO:       /* auto */
 2700                         auth = ieee80211_authenticator_get(ireq->i_val);
 2701                         if (auth == NULL)
 2702                                 return EINVAL;
 2703                         break;
 2704                 default:
 2705                         return EINVAL;
 2706                 }
 2707                 switch (ireq->i_val) {
 2708                 case IEEE80211_AUTH_WPA:        /* WPA w/ 802.1x */
 2709                         vap->iv_flags |= IEEE80211_F_PRIVACY;
 2710                         ireq->i_val = IEEE80211_AUTH_8021X;
 2711                         break;
 2712                 case IEEE80211_AUTH_OPEN:       /* open */
 2713                         vap->iv_flags &= ~(IEEE80211_F_WPA|IEEE80211_F_PRIVACY);
 2714                         break;
 2715                 case IEEE80211_AUTH_SHARED:     /* shared-key */
 2716                 case IEEE80211_AUTH_8021X:      /* 802.1x */
 2717                         vap->iv_flags &= ~IEEE80211_F_WPA;
 2718                         /* both require a key so mark the PRIVACY capability */
 2719                         vap->iv_flags |= IEEE80211_F_PRIVACY;
 2720                         break;
 2721                 case IEEE80211_AUTH_AUTO:       /* auto */
 2722                         vap->iv_flags &= ~IEEE80211_F_WPA;
 2723                         /* XXX PRIVACY handling? */
 2724                         /* XXX what's the right way to do this? */
 2725                         break;
 2726                 }
 2727                 /* NB: authenticator attach/detach happens on state change */
 2728                 vap->iv_bss->ni_authmode = ireq->i_val;
 2729                 /* XXX mixed/mode/usage? */
 2730                 vap->iv_auth = auth;
 2731                 error = ENETRESET;
 2732                 break;
 2733         case IEEE80211_IOC_CHANNEL:
 2734                 error = ieee80211_ioctl_setchannel(vap, ireq);
 2735                 break;
 2736         case IEEE80211_IOC_POWERSAVE:
 2737                 switch (ireq->i_val) {
 2738                 case IEEE80211_POWERSAVE_OFF:
 2739                         if (vap->iv_flags & IEEE80211_F_PMGTON) {
 2740                                 ieee80211_syncflag(vap, -IEEE80211_F_PMGTON);
 2741                                 error = ERESTART;
 2742                         }
 2743                         break;
 2744                 case IEEE80211_POWERSAVE_ON:
 2745                         if ((vap->iv_caps & IEEE80211_C_PMGT) == 0)
 2746                                 error = EOPNOTSUPP;
 2747                         else if ((vap->iv_flags & IEEE80211_F_PMGTON) == 0) {
 2748                                 ieee80211_syncflag(vap, IEEE80211_F_PMGTON);
 2749                                 error = ERESTART;
 2750                         }
 2751                         break;
 2752                 default:
 2753                         error = EINVAL;
 2754                         break;
 2755                 }
 2756                 break;
 2757         case IEEE80211_IOC_POWERSAVESLEEP:
 2758                 if (ireq->i_val < 0)
 2759                         return EINVAL;
 2760                 ic->ic_lintval = ireq->i_val;
 2761                 error = ERESTART;
 2762                 break;
 2763         case IEEE80211_IOC_RTSTHRESHOLD:
 2764                 if (!(IEEE80211_RTS_MIN <= ireq->i_val &&
 2765                       ireq->i_val <= IEEE80211_RTS_MAX))
 2766                         return EINVAL;
 2767                 vap->iv_rtsthreshold = ireq->i_val;
 2768                 error = ERESTART;
 2769                 break;
 2770         case IEEE80211_IOC_PROTMODE:
 2771                 if (ireq->i_val > IEEE80211_PROT_RTSCTS)
 2772                         return EINVAL;
 2773                 ic->ic_protmode = (enum ieee80211_protmode)ireq->i_val;
 2774                 /* NB: if not operating in 11g this can wait */
 2775                 if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
 2776                     IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan))
 2777                         error = ERESTART;
 2778                 break;
 2779         case IEEE80211_IOC_TXPOWER:
 2780                 if ((ic->ic_caps & IEEE80211_C_TXPMGT) == 0)
 2781                         return EOPNOTSUPP;
 2782                 if (!(IEEE80211_TXPOWER_MIN <= ireq->i_val &&
 2783                       ireq->i_val <= IEEE80211_TXPOWER_MAX))
 2784                         return EINVAL;
 2785                 ic->ic_txpowlimit = ireq->i_val;
 2786                 error = ERESTART;
 2787                 break;
 2788         case IEEE80211_IOC_ROAMING:
 2789                 if (!(IEEE80211_ROAMING_DEVICE <= ireq->i_val &&
 2790                     ireq->i_val <= IEEE80211_ROAMING_MANUAL))
 2791                         return EINVAL;
 2792                 vap->iv_roaming = (enum ieee80211_roamingmode)ireq->i_val;
 2793                 /* XXXX reset? */
 2794                 break;
 2795         case IEEE80211_IOC_PRIVACY:
 2796                 if (ireq->i_val) {
 2797                         /* XXX check for key state? */
 2798                         vap->iv_flags |= IEEE80211_F_PRIVACY;
 2799                 } else
 2800                         vap->iv_flags &= ~IEEE80211_F_PRIVACY;
 2801                 /* XXX ERESTART? */
 2802                 break;
 2803         case IEEE80211_IOC_DROPUNENCRYPTED:
 2804                 if (ireq->i_val)
 2805                         vap->iv_flags |= IEEE80211_F_DROPUNENC;
 2806                 else
 2807                         vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
 2808                 /* XXX ERESTART? */
 2809                 break;
 2810         case IEEE80211_IOC_WPAKEY:
 2811                 error = ieee80211_ioctl_setkey(vap, ireq);
 2812                 break;
 2813         case IEEE80211_IOC_DELKEY:
 2814                 error = ieee80211_ioctl_delkey(vap, ireq);
 2815                 break;
 2816         case IEEE80211_IOC_MLME:
 2817                 error = ieee80211_ioctl_setmlme(vap, ireq);
 2818                 break;
 2819         case IEEE80211_IOC_COUNTERMEASURES:
 2820                 if (ireq->i_val) {
 2821                         if ((vap->iv_flags & IEEE80211_F_WPA) == 0)
 2822                                 return EOPNOTSUPP;
 2823                         vap->iv_flags |= IEEE80211_F_COUNTERM;
 2824                 } else
 2825                         vap->iv_flags &= ~IEEE80211_F_COUNTERM;
 2826                 /* XXX ERESTART? */
 2827                 break;
 2828         case IEEE80211_IOC_WPA:
 2829                 if (ireq->i_val > 3)
 2830                         return EINVAL;
 2831                 /* XXX verify ciphers available */
 2832                 flags = vap->iv_flags & ~IEEE80211_F_WPA;
 2833                 switch (ireq->i_val) {
 2834                 case 1:
 2835                         if (!(vap->iv_caps & IEEE80211_C_WPA1))
 2836                                 return EOPNOTSUPP;
 2837                         flags |= IEEE80211_F_WPA1;
 2838                         break;
 2839                 case 2:
 2840                         if (!(vap->iv_caps & IEEE80211_C_WPA2))
 2841                                 return EOPNOTSUPP;
 2842                         flags |= IEEE80211_F_WPA2;
 2843                         break;
 2844                 case 3:
 2845                         if ((vap->iv_caps & IEEE80211_C_WPA) != IEEE80211_C_WPA)
 2846                                 return EOPNOTSUPP;
 2847                         flags |= IEEE80211_F_WPA1 | IEEE80211_F_WPA2;
 2848                         break;
 2849                 default:        /*  Can't set any -> error */
 2850                         return EOPNOTSUPP;
 2851                 }
 2852                 vap->iv_flags = flags;
 2853                 error = ERESTART;       /* NB: can change beacon frame */
 2854                 break;
 2855         case IEEE80211_IOC_WME:
 2856                 if (ireq->i_val) {
 2857                         if ((vap->iv_caps & IEEE80211_C_WME) == 0)
 2858                                 return EOPNOTSUPP;
 2859                         ieee80211_syncflag(vap, IEEE80211_F_WME);
 2860                 } else
 2861                         ieee80211_syncflag(vap, -IEEE80211_F_WME);
 2862                 error = ERESTART;       /* NB: can change beacon frame */
 2863                 break;
 2864         case IEEE80211_IOC_HIDESSID:
 2865                 if (ireq->i_val)
 2866                         vap->iv_flags |= IEEE80211_F_HIDESSID;
 2867                 else
 2868                         vap->iv_flags &= ~IEEE80211_F_HIDESSID;
 2869                 error = ERESTART;               /* XXX ENETRESET? */
 2870                 break;
 2871         case IEEE80211_IOC_APBRIDGE:
 2872                 if (ireq->i_val == 0)
 2873                         vap->iv_flags |= IEEE80211_F_NOBRIDGE;
 2874                 else
 2875                         vap->iv_flags &= ~IEEE80211_F_NOBRIDGE;
 2876                 break;
 2877         case IEEE80211_IOC_BSSID:
 2878                 if (ireq->i_len != sizeof(tmpbssid))
 2879                         return EINVAL;
 2880                 error = copyin(ireq->i_data, tmpbssid, ireq->i_len);
 2881                 if (error)
 2882                         break;
 2883                 IEEE80211_ADDR_COPY(vap->iv_des_bssid, tmpbssid);
 2884                 if (IEEE80211_ADDR_EQ(vap->iv_des_bssid, zerobssid))
 2885                         vap->iv_flags &= ~IEEE80211_F_DESBSSID;
 2886                 else
 2887                         vap->iv_flags |= IEEE80211_F_DESBSSID;
 2888                 error = ENETRESET;
 2889                 break;
 2890         case IEEE80211_IOC_CHANLIST:
 2891                 error = ieee80211_ioctl_setchanlist(vap, ireq);
 2892                 break;
 2893 #define OLD_IEEE80211_IOC_SCAN_REQ      23
 2894 #ifdef OLD_IEEE80211_IOC_SCAN_REQ
 2895         case OLD_IEEE80211_IOC_SCAN_REQ:
 2896                 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
 2897                         "%s: active scan request\n", __func__);
 2898                 /*
 2899                  * If we are in INIT state then the driver has never
 2900                  * had a chance to setup hardware state to do a scan;
 2901                  * use the state machine to get us up the SCAN state.
 2902                  * Otherwise just invoke the scan machinery to start
 2903                  * a one-time scan.
 2904                  */
 2905                 if (vap->iv_state == IEEE80211_S_INIT)
 2906                         ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
 2907                 else
 2908                         (void) ieee80211_start_scan(vap,
 2909                                 IEEE80211_SCAN_ACTIVE |
 2910                                 IEEE80211_SCAN_NOPICK |
 2911                                 IEEE80211_SCAN_ONCE,
 2912                                 IEEE80211_SCAN_FOREVER, 0, 0,
 2913                                 /* XXX use ioctl params */
 2914                                 vap->iv_des_nssid, vap->iv_des_ssid);
 2915                 break;
 2916 #endif /* OLD_IEEE80211_IOC_SCAN_REQ */
 2917         case IEEE80211_IOC_SCAN_REQ:
 2918                 error = ieee80211_ioctl_scanreq(vap, ireq);
 2919                 break;
 2920         case IEEE80211_IOC_SCAN_CANCEL:
 2921                 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
 2922                     "%s: cancel scan\n", __func__);
 2923                 ieee80211_cancel_scan(vap);
 2924                 break;
 2925         case IEEE80211_IOC_HTCONF:
 2926                 if (ireq->i_val & 1)
 2927                         ieee80211_syncflag_ht(vap, IEEE80211_FHT_HT);
 2928                 else
 2929                         ieee80211_syncflag_ht(vap, -IEEE80211_FHT_HT);
 2930                 if (ireq->i_val & 2)
 2931                         ieee80211_syncflag_ht(vap, IEEE80211_FHT_USEHT40);
 2932                 else
 2933                         ieee80211_syncflag_ht(vap, -IEEE80211_FHT_USEHT40);
 2934                 error = ENETRESET;
 2935                 break;
 2936         case IEEE80211_IOC_ADDMAC:
 2937         case IEEE80211_IOC_DELMAC:
 2938                 error = ieee80211_ioctl_macmac(vap, ireq);
 2939                 break;
 2940         case IEEE80211_IOC_MACCMD:
 2941                 error = ieee80211_ioctl_setmaccmd(vap, ireq);
 2942                 break;
 2943         case IEEE80211_IOC_STA_STATS:
 2944                 error = ieee80211_ioctl_setstastats(vap, ireq);
 2945                 break;
 2946         case IEEE80211_IOC_STA_TXPOW:
 2947                 error = ieee80211_ioctl_setstatxpow(vap, ireq);
 2948                 break;
 2949         case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
 2950         case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
 2951         case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
 2952         case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
 2953         case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
 2954         case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (bss only) */
 2955                 error = ieee80211_ioctl_setwmeparam(vap, ireq);
 2956                 break;
 2957         case IEEE80211_IOC_DTIM_PERIOD:
 2958                 if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
 2959                     vap->iv_opmode != IEEE80211_M_MBSS &&
 2960                     vap->iv_opmode != IEEE80211_M_IBSS)
 2961                         return EINVAL;
 2962                 if (IEEE80211_DTIM_MIN <= ireq->i_val &&
 2963                     ireq->i_val <= IEEE80211_DTIM_MAX) {
 2964                         vap->iv_dtim_period = ireq->i_val;
 2965                         error = ENETRESET;              /* requires restart */
 2966                 } else
 2967                         error = EINVAL;
 2968                 break;
 2969         case IEEE80211_IOC_BEACON_INTERVAL:
 2970                 if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
 2971                     vap->iv_opmode != IEEE80211_M_MBSS &&
 2972                     vap->iv_opmode != IEEE80211_M_IBSS)
 2973                         return EINVAL;
 2974                 if (IEEE80211_BINTVAL_MIN <= ireq->i_val &&
 2975                     ireq->i_val <= IEEE80211_BINTVAL_MAX) {
 2976                         ic->ic_bintval = ireq->i_val;
 2977                         error = ENETRESET;              /* requires restart */
 2978                 } else
 2979                         error = EINVAL;
 2980                 break;
 2981         case IEEE80211_IOC_PUREG:
 2982                 if (ireq->i_val)
 2983                         vap->iv_flags |= IEEE80211_F_PUREG;
 2984                 else
 2985                         vap->iv_flags &= ~IEEE80211_F_PUREG;
 2986                 /* NB: reset only if we're operating on an 11g channel */
 2987                 if (isvap11g(vap))
 2988                         error = ENETRESET;
 2989                 break;
 2990         case IEEE80211_IOC_QUIET:
 2991                 vap->iv_quiet= ireq->i_val;
 2992                 break;
 2993         case IEEE80211_IOC_QUIET_COUNT:
 2994                 vap->iv_quiet_count=ireq->i_val;
 2995                 break;
 2996         case IEEE80211_IOC_QUIET_PERIOD:
 2997                 vap->iv_quiet_period=ireq->i_val;
 2998                 break;
 2999         case IEEE80211_IOC_QUIET_OFFSET:
 3000                 vap->iv_quiet_offset=ireq->i_val;
 3001                 break;
 3002         case IEEE80211_IOC_QUIET_DUR:
 3003                 if(ireq->i_val < vap->iv_bss->ni_intval)
 3004                         vap->iv_quiet_duration = ireq->i_val;
 3005                 else
 3006                         error = EINVAL;
 3007                 break;
 3008         case IEEE80211_IOC_BGSCAN:
 3009                 if (ireq->i_val) {
 3010                         if ((vap->iv_caps & IEEE80211_C_BGSCAN) == 0)
 3011                                 return EOPNOTSUPP;
 3012                         vap->iv_flags |= IEEE80211_F_BGSCAN;
 3013                 } else
 3014                         vap->iv_flags &= ~IEEE80211_F_BGSCAN;
 3015                 break;
 3016         case IEEE80211_IOC_BGSCAN_IDLE:
 3017                 if (ireq->i_val >= IEEE80211_BGSCAN_IDLE_MIN)
 3018                         vap->iv_bgscanidle = ireq->i_val*hz/1000;
 3019                 else
 3020                         error = EINVAL;
 3021                 break;
 3022         case IEEE80211_IOC_BGSCAN_INTERVAL:
 3023                 if (ireq->i_val >= IEEE80211_BGSCAN_INTVAL_MIN)
 3024                         vap->iv_bgscanintvl = ireq->i_val*hz;
 3025                 else
 3026                         error = EINVAL;
 3027                 break;
 3028         case IEEE80211_IOC_SCANVALID:
 3029                 if (ireq->i_val >= IEEE80211_SCAN_VALID_MIN)
 3030                         vap->iv_scanvalid = ireq->i_val*hz;
 3031                 else
 3032                         error = EINVAL;
 3033                 break;
 3034         case IEEE80211_IOC_FRAGTHRESHOLD:
 3035                 if ((vap->iv_caps & IEEE80211_C_TXFRAG) == 0 &&
 3036                     ireq->i_val != IEEE80211_FRAG_MAX)
 3037                         return EOPNOTSUPP;
 3038                 if (!(IEEE80211_FRAG_MIN <= ireq->i_val &&
 3039                       ireq->i_val <= IEEE80211_FRAG_MAX))
 3040                         return EINVAL;
 3041                 vap->iv_fragthreshold = ireq->i_val;
 3042                 error = ERESTART;
 3043                 break;
 3044         case IEEE80211_IOC_BURST:
 3045                 if (ireq->i_val) {
 3046                         if ((vap->iv_caps & IEEE80211_C_BURST) == 0)
 3047                                 return EOPNOTSUPP;
 3048                         ieee80211_syncflag(vap, IEEE80211_F_BURST);
 3049                 } else
 3050                         ieee80211_syncflag(vap, -IEEE80211_F_BURST);
 3051                 error = ERESTART;
 3052                 break;
 3053         case IEEE80211_IOC_BMISSTHRESHOLD:
 3054                 if (!(IEEE80211_HWBMISS_MIN <= ireq->i_val &&
 3055                       ireq->i_val <= IEEE80211_HWBMISS_MAX))
 3056                         return EINVAL;
 3057                 vap->iv_bmissthreshold = ireq->i_val;
 3058                 error = ERESTART;
 3059                 break;
 3060         case IEEE80211_IOC_CURCHAN:
 3061                 error = ieee80211_ioctl_setcurchan(vap, ireq);
 3062                 break;
 3063         case IEEE80211_IOC_SHORTGI:
 3064                 if (ireq->i_val) {
 3065 #define IEEE80211_HTCAP_SHORTGI \
 3066         (IEEE80211_HTCAP_SHORTGI20 | IEEE80211_HTCAP_SHORTGI40)
 3067                         if (((ireq->i_val ^ vap->iv_htcaps) & IEEE80211_HTCAP_SHORTGI) != 0)
 3068                                 return EINVAL;
 3069                         if (ireq->i_val & IEEE80211_HTCAP_SHORTGI20)
 3070                                 vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI20;
 3071                         if (ireq->i_val & IEEE80211_HTCAP_SHORTGI40)
 3072                                 vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI40;
 3073 #undef IEEE80211_HTCAP_SHORTGI
 3074                 } else
 3075                         vap->iv_flags_ht &=
 3076                             ~(IEEE80211_FHT_SHORTGI20 | IEEE80211_FHT_SHORTGI40);
 3077                 error = ERESTART;
 3078                 break;
 3079         case IEEE80211_IOC_AMPDU:
 3080                 if (ireq->i_val && (vap->iv_htcaps & IEEE80211_HTC_AMPDU) == 0)
 3081                         return EINVAL;
 3082                 if (ireq->i_val & 1)
 3083                         vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_TX;
 3084                 else
 3085                         vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_TX;
 3086                 if (ireq->i_val & 2)
 3087                         vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_RX;
 3088                 else
 3089                         vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_RX;
 3090                 /* NB: reset only if we're operating on an 11n channel */
 3091                 if (isvapht(vap))
 3092                         error = ERESTART;
 3093                 break;
 3094         case IEEE80211_IOC_AMPDU_LIMIT:
 3095                 if (!(IEEE80211_HTCAP_MAXRXAMPDU_8K <= ireq->i_val &&
 3096                       ireq->i_val <= IEEE80211_HTCAP_MAXRXAMPDU_64K))
 3097                         return EINVAL;
 3098                 if (vap->iv_opmode == IEEE80211_M_HOSTAP)
 3099                         vap->iv_ampdu_rxmax = ireq->i_val;
 3100                 else
 3101                         vap->iv_ampdu_limit = ireq->i_val;
 3102                 error = ERESTART;
 3103                 break;
 3104         case IEEE80211_IOC_AMPDU_DENSITY:
 3105                 if (!(IEEE80211_HTCAP_MPDUDENSITY_NA <= ireq->i_val &&
 3106                       ireq->i_val <= IEEE80211_HTCAP_MPDUDENSITY_16))
 3107                         return EINVAL;
 3108                 vap->iv_ampdu_density = ireq->i_val;
 3109                 error = ERESTART;
 3110                 break;
 3111         case IEEE80211_IOC_AMSDU:
 3112                 if (ireq->i_val && (vap->iv_htcaps & IEEE80211_HTC_AMSDU) == 0)
 3113                         return EINVAL;
 3114                 if (ireq->i_val & 1)
 3115                         vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_TX;
 3116                 else
 3117                         vap->iv_flags_ht &= ~IEEE80211_FHT_AMSDU_TX;
 3118                 if (ireq->i_val & 2)
 3119                         vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_RX;
 3120                 else
 3121                         vap->iv_flags_ht &= ~IEEE80211_FHT_AMSDU_RX;
 3122                 /* NB: reset only if we're operating on an 11n channel */
 3123                 if (isvapht(vap))
 3124                         error = ERESTART;
 3125                 break;
 3126         case IEEE80211_IOC_AMSDU_LIMIT:
 3127                 /* XXX validate */
 3128                 vap->iv_amsdu_limit = ireq->i_val;      /* XXX truncation? */
 3129                 break;
 3130         case IEEE80211_IOC_PUREN:
 3131                 if (ireq->i_val) {
 3132                         if ((vap->iv_flags_ht & IEEE80211_FHT_HT) == 0)
 3133                                 return EINVAL;
 3134                         vap->iv_flags_ht |= IEEE80211_FHT_PUREN;
 3135                 } else
 3136                         vap->iv_flags_ht &= ~IEEE80211_FHT_PUREN;
 3137                 /* NB: reset only if we're operating on an 11n channel */
 3138                 if (isvapht(vap))
 3139                         error = ERESTART;
 3140                 break;
 3141         case IEEE80211_IOC_DOTH:
 3142                 if (ireq->i_val) {
 3143 #if 0
 3144                         /* XXX no capability */
 3145                         if ((vap->iv_caps & IEEE80211_C_DOTH) == 0)
 3146                                 return EOPNOTSUPP;
 3147 #endif
 3148                         vap->iv_flags |= IEEE80211_F_DOTH;
 3149                 } else
 3150                         vap->iv_flags &= ~IEEE80211_F_DOTH;
 3151                 error = ENETRESET;
 3152                 break;
 3153         case IEEE80211_IOC_REGDOMAIN:
 3154                 error = ieee80211_ioctl_setregdomain(vap, ireq);
 3155                 break;
 3156         case IEEE80211_IOC_ROAM:
 3157                 error = ieee80211_ioctl_setroam(vap, ireq);
 3158                 break;
 3159         case IEEE80211_IOC_TXPARAMS:
 3160                 error = ieee80211_ioctl_settxparams(vap, ireq);
 3161                 break;
 3162         case IEEE80211_IOC_HTCOMPAT:
 3163                 if (ireq->i_val) {
 3164                         if ((vap->iv_flags_ht & IEEE80211_FHT_HT) == 0)
 3165                                 return EOPNOTSUPP;
 3166                         vap->iv_flags_ht |= IEEE80211_FHT_HTCOMPAT;
 3167                 } else
 3168                         vap->iv_flags_ht &= ~IEEE80211_FHT_HTCOMPAT;
 3169                 /* NB: reset only if we're operating on an 11n channel */
 3170                 if (isvapht(vap))
 3171                         error = ERESTART;
 3172                 break;
 3173         case IEEE80211_IOC_DWDS:
 3174                 if (ireq->i_val) {
 3175                         /* NB: DWDS only makes sense for WDS-capable devices */
 3176                         if ((ic->ic_caps & IEEE80211_C_WDS) == 0)
 3177                                 return EOPNOTSUPP;
 3178                         /* NB: DWDS is used only with ap+sta vaps */
 3179                         if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
 3180                             vap->iv_opmode != IEEE80211_M_STA)
 3181                                 return EINVAL;
 3182                         vap->iv_flags |= IEEE80211_F_DWDS;
 3183                         if (vap->iv_opmode == IEEE80211_M_STA)
 3184                                 vap->iv_flags_ext |= IEEE80211_FEXT_4ADDR;
 3185                 } else {
 3186                         vap->iv_flags &= ~IEEE80211_F_DWDS;
 3187                         if (vap->iv_opmode == IEEE80211_M_STA)
 3188                                 vap->iv_flags_ext &= ~IEEE80211_FEXT_4ADDR;
 3189                 }
 3190                 break;
 3191         case IEEE80211_IOC_INACTIVITY:
 3192                 if (ireq->i_val)
 3193                         vap->iv_flags_ext |= IEEE80211_FEXT_INACT;
 3194                 else
 3195                         vap->iv_flags_ext &= ~IEEE80211_FEXT_INACT;
 3196                 break;
 3197         case IEEE80211_IOC_APPIE:
 3198                 error = ieee80211_ioctl_setappie(vap, ireq);
 3199                 break;
 3200         case IEEE80211_IOC_WPS:
 3201                 if (ireq->i_val) {
 3202                         if ((vap->iv_caps & IEEE80211_C_WPA) == 0)
 3203                                 return EOPNOTSUPP;
 3204                         vap->iv_flags_ext |= IEEE80211_FEXT_WPS;
 3205                 } else
 3206                         vap->iv_flags_ext &= ~IEEE80211_FEXT_WPS;
 3207                 break;
 3208         case IEEE80211_IOC_TSN:
 3209                 if (ireq->i_val) {
 3210                         if ((vap->iv_caps & IEEE80211_C_WPA) == 0)
 3211                                 return EOPNOTSUPP;
 3212                         vap->iv_flags_ext |= IEEE80211_FEXT_TSN;
 3213                 } else
 3214                         vap->iv_flags_ext &= ~IEEE80211_FEXT_TSN;
 3215                 break;
 3216         case IEEE80211_IOC_CHANSWITCH:
 3217                 error = ieee80211_ioctl_chanswitch(vap, ireq);
 3218                 break;
 3219         case IEEE80211_IOC_DFS:
 3220                 if (ireq->i_val) {
 3221                         if ((vap->iv_caps & IEEE80211_C_DFS) == 0)
 3222                                 return EOPNOTSUPP;
 3223                         /* NB: DFS requires 11h support */
 3224                         if ((vap->iv_flags & IEEE80211_F_DOTH) == 0)
 3225                                 return EINVAL;
 3226                         vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
 3227                 } else
 3228                         vap->iv_flags_ext &= ~IEEE80211_FEXT_DFS;
 3229                 break;
 3230         case IEEE80211_IOC_DOTD:
 3231                 if (ireq->i_val)
 3232                         vap->iv_flags_ext |= IEEE80211_FEXT_DOTD;
 3233                 else
 3234                         vap->iv_flags_ext &= ~IEEE80211_FEXT_DOTD;
 3235                 if (vap->iv_opmode == IEEE80211_M_STA)
 3236                         error = ENETRESET;
 3237                 break;
 3238         case IEEE80211_IOC_HTPROTMODE:
 3239                 if (ireq->i_val > IEEE80211_PROT_RTSCTS)
 3240                         return EINVAL;
 3241                 ic->ic_htprotmode = ireq->i_val ?
 3242                     IEEE80211_PROT_RTSCTS : IEEE80211_PROT_NONE;
 3243                 /* NB: if not operating in 11n this can wait */
 3244                 if (isvapht(vap))
 3245                         error = ERESTART;
 3246                 break;
 3247         case IEEE80211_IOC_STA_VLAN:
 3248                 error = ieee80211_ioctl_setstavlan(vap, ireq);
 3249                 break;
 3250         case IEEE80211_IOC_SMPS:
 3251                 if ((ireq->i_val &~ IEEE80211_HTCAP_SMPS) != 0 ||
 3252                     ireq->i_val == 0x0008)      /* value of 2 is reserved */
 3253                         return EINVAL;
 3254                 if (ireq->i_val != IEEE80211_HTCAP_SMPS_OFF &&
 3255                     (vap->iv_htcaps & IEEE80211_HTC_SMPS) == 0)
 3256                         return EOPNOTSUPP;
 3257                 vap->iv_htcaps = (vap->iv_htcaps &~ IEEE80211_HTCAP_SMPS) |
 3258                         ireq->i_val;
 3259                 /* NB: if not operating in 11n this can wait */
 3260                 if (isvapht(vap))
 3261                         error = ERESTART;
 3262                 break;
 3263         case IEEE80211_IOC_RIFS:
 3264                 if (ireq->i_val != 0) {
 3265                         if ((vap->iv_htcaps & IEEE80211_HTC_RIFS) == 0)
 3266                                 return EOPNOTSUPP;
 3267                         vap->iv_flags_ht |= IEEE80211_FHT_RIFS;
 3268                 } else
 3269                         vap->iv_flags_ht &= ~IEEE80211_FHT_RIFS;
 3270                 /* NB: if not operating in 11n this can wait */
 3271                 if (isvapht(vap))
 3272                         error = ERESTART;
 3273                 break;
 3274         default:
 3275                 error = ieee80211_ioctl_setdefault(vap, ireq);
 3276                 break;
 3277         }
 3278         /*
 3279          * The convention is that ENETRESET means an operation
 3280          * requires a complete re-initialization of the device (e.g.
 3281          * changing something that affects the association state).
 3282          * ERESTART means the request may be handled with only a
 3283          * reload of the hardware state.  We hand ERESTART requests
 3284          * to the iv_reset callback so the driver can decide.  If
 3285          * a device does not fillin iv_reset then it defaults to one
 3286          * that returns ENETRESET.  Otherwise a driver may return
 3287          * ENETRESET (in which case a full reset will be done) or
 3288          * 0 to mean there's no need to do anything (e.g. when the
 3289          * change has no effect on the driver/device).
 3290          */
 3291         if (error == ERESTART)
 3292                 error = IFNET_IS_UP_RUNNING(vap->iv_ifp) ?
 3293                     vap->iv_reset(vap, ireq->i_type) : 0;
 3294         if (error == ENETRESET) {
 3295                 /* XXX need to re-think AUTO handling */
 3296                 if (IS_UP_AUTO(vap))
 3297                         ieee80211_init(vap);
 3298                 error = 0;
 3299         }
 3300         return error;
 3301 }
 3302 
 3303 /*
 3304  * Rebuild the parent's multicast address list after an add/del
 3305  * of a multicast address for a vap.  We have no way to tell
 3306  * what happened above to optimize the work so we purge the entire
 3307  * list and rebuild from scratch.  This is way expensive.
 3308  * Note also the half-baked workaround for if_addmulti calling
 3309  * back to the parent device; there's no way to insert mcast
 3310  * entries quietly and/or cheaply.
 3311  */
 3312 static void
 3313 ieee80211_ioctl_updatemulti(struct ieee80211com *ic)
 3314 {
 3315         struct ifnet *parent = ic->ic_ifp;
 3316         struct ieee80211vap *vap;
 3317         void *ioctl;
 3318 
 3319         IEEE80211_LOCK(ic);
 3320         if_delallmulti(parent);
 3321         ioctl = parent->if_ioctl;       /* XXX WAR if_allmulti */
 3322         parent->if_ioctl = NULL;
 3323         TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
 3324                 struct ifnet *ifp = vap->iv_ifp;
 3325                 struct ifmultiaddr *ifma;
 3326 
 3327                 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
 3328                         if (ifma->ifma_addr->sa_family != AF_LINK)
 3329                                 continue;
 3330                         (void) if_addmulti(parent, ifma->ifma_addr, NULL);
 3331                 }
 3332         }
 3333         parent->if_ioctl = ioctl;
 3334         ieee80211_runtask(ic, &ic->ic_mcast_task);
 3335         IEEE80211_UNLOCK(ic);
 3336 }
 3337 
 3338 int
 3339 ieee80211_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 3340 {
 3341         struct ieee80211vap *vap = ifp->if_softc;
 3342         struct ieee80211com *ic = vap->iv_ic;
 3343         int error = 0;
 3344         struct ifreq *ifr;
 3345         struct ifaddr *ifa;                     /* XXX */
 3346 
 3347         switch (cmd) {
 3348         case SIOCSIFFLAGS:
 3349                 IEEE80211_LOCK(ic);
 3350                 ieee80211_syncifflag_locked(ic, IFF_PROMISC);
 3351                 ieee80211_syncifflag_locked(ic, IFF_ALLMULTI);
 3352                 if (ifp->if_flags & IFF_UP) {
 3353                         /*
 3354                          * Bring ourself up unless we're already operational.
 3355                          * If we're the first vap and the parent is not up
 3356                          * then it will automatically be brought up as a
 3357                          * side-effect of bringing ourself up.
 3358                          */
 3359                         if (vap->iv_state == IEEE80211_S_INIT)
 3360                                 ieee80211_start_locked(vap);
 3361                 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 3362                         /*
 3363                          * Stop ourself.  If we are the last vap to be
 3364                          * marked down the parent will also be taken down.
 3365                          */
 3366                         ieee80211_stop_locked(vap);
 3367                 }
 3368                 IEEE80211_UNLOCK(ic);
 3369                 /* Wait for parent ioctl handler if it was queued */
 3370                 ieee80211_waitfor_parent(ic);
 3371                 break;
 3372         case SIOCADDMULTI:
 3373         case SIOCDELMULTI:
 3374                 ieee80211_ioctl_updatemulti(ic);
 3375                 break;
 3376         case SIOCSIFMEDIA:
 3377         case SIOCGIFMEDIA:
 3378                 ifr = (struct ifreq *)data;
 3379                 error = ifmedia_ioctl(ifp, ifr, &vap->iv_media, cmd);
 3380                 break;
 3381         case SIOCG80211:
 3382                 error = ieee80211_ioctl_get80211(vap, cmd,
 3383                                 (struct ieee80211req *) data);
 3384                 break;
 3385         case SIOCS80211:
 3386                 error = priv_check(curthread, PRIV_NET80211_MANAGE);
 3387                 if (error == 0)
 3388                         error = ieee80211_ioctl_set80211(vap, cmd,
 3389                                         (struct ieee80211req *) data);
 3390                 break;
 3391         case SIOCG80211STATS:
 3392                 ifr = (struct ifreq *)data;
 3393                 copyout(&vap->iv_stats, ifr->ifr_data, sizeof (vap->iv_stats));
 3394                 break;
 3395         case SIOCSIFMTU:
 3396                 ifr = (struct ifreq *)data;
 3397                 if (!(IEEE80211_MTU_MIN <= ifr->ifr_mtu &&
 3398                     ifr->ifr_mtu <= IEEE80211_MTU_MAX))
 3399                         error = EINVAL;
 3400                 else
 3401                         ifp->if_mtu = ifr->ifr_mtu;
 3402                 break;
 3403         case SIOCSIFADDR:
 3404                 /*
 3405                  * XXX Handle this directly so we can supress if_init calls.
 3406                  * XXX This should be done in ether_ioctl but for the moment
 3407                  * XXX there are too many other parts of the system that
 3408                  * XXX set IFF_UP and so supress if_init being called when
 3409                  * XXX it should be.
 3410                  */
 3411                 ifa = (struct ifaddr *) data;
 3412                 switch (ifa->ifa_addr->sa_family) {
 3413 #ifdef INET
 3414                 case AF_INET:
 3415                         if ((ifp->if_flags & IFF_UP) == 0) {
 3416                                 ifp->if_flags |= IFF_UP;
 3417                                 ifp->if_init(ifp->if_softc);
 3418                         }
 3419                         arp_ifinit(ifp, ifa);
 3420                         break;
 3421 #endif
 3422 #ifdef IPX
 3423                 /*
 3424                  * XXX - This code is probably wrong,
 3425                  *       but has been copied many times.
 3426                  */
 3427                 case AF_IPX: {
 3428                         struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
 3429 
 3430                         if (ipx_nullhost(*ina))
 3431                                 ina->x_host = *(union ipx_host *)
 3432                                     IF_LLADDR(ifp);
 3433                         else
 3434                                 bcopy((caddr_t) ina->x_host.c_host,
 3435                                       (caddr_t) IF_LLADDR(ifp),
 3436                                       ETHER_ADDR_LEN);
 3437                         /* fall thru... */
 3438                 }
 3439 #endif
 3440                 default:
 3441                         if ((ifp->if_flags & IFF_UP) == 0) {
 3442                                 ifp->if_flags |= IFF_UP;
 3443                                 ifp->if_init(ifp->if_softc);
 3444                         }
 3445                         break;
 3446                 }
 3447                 break;
 3448         /* Pass NDIS ioctls up to the driver */
 3449         case SIOCGDRVSPEC:
 3450         case SIOCSDRVSPEC:
 3451         case SIOCGPRIVATE_0: {
 3452                 struct ifnet *parent = vap->iv_ic->ic_ifp;
 3453                 error = parent->if_ioctl(parent, cmd, data);
 3454                 break;
 3455         }
 3456         default:
 3457                 error = ether_ioctl(ifp, cmd, data);
 3458                 break;
 3459         }
 3460         return error;
 3461 }

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