/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2001 Atsushi Onoe
 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
/*
 * IEEE 802.11 ioctl support (FreeBSD-specific)
 */

#include "opt_inet.h"
#include "opt_wlan.h"

#include <sys/endian.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/systm.h>

#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_private.h>
#include <net/ethernet.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_ioctl.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_input.h>

#define IS_UP_AUTO(_vap) \
        (IFNET_IS_UP_RUNNING((_vap)->iv_ifp) && \
         (_vap)->iv_roaming == IEEE80211_ROAMING_AUTO)

static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
static struct ieee80211_channel *findchannel(struct ieee80211com *,
                int ieee, int mode);
static int ieee80211_scanreq(struct ieee80211vap *,
                struct ieee80211_scan_req *);

static int
ieee80211_ioctl_getkey(u_long cmd, struct ieee80211vap *vap,
    struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_node *ni;
        struct ieee80211req_key ik;
        struct ieee80211_key *wk;
        const struct ieee80211_cipher *cip;
        u_int kid;
        int error;

        if (ireq->i_len != sizeof(ik))
                return EINVAL;
        error = copyin(ireq->i_data, &ik, sizeof(ik));
        if (error)
                return error;
        kid = ik.ik_keyix;
        if (kid == IEEE80211_KEYIX_NONE) {
                ni = ieee80211_find_vap_node(&ic->ic_sta, vap, ik.ik_macaddr);
                if (ni == NULL)
                        return ENOENT;
                wk = &ni->ni_ucastkey;
        } else {
                if (kid >= IEEE80211_WEP_NKID)
                        return EINVAL;
                wk = &vap->iv_nw_keys[kid];
                IEEE80211_ADDR_COPY(&ik.ik_macaddr, vap->iv_bss->ni_macaddr);
                ni = NULL;
        }
        cip = wk->wk_cipher;
        ik.ik_type = cip->ic_cipher;
        ik.ik_keylen = wk->wk_keylen;
        ik.ik_flags = wk->wk_flags & (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV);
        if (wk->wk_keyix == vap->iv_def_txkey)
                ik.ik_flags |= IEEE80211_KEY_DEFAULT;
        if (ieee80211_priv_check_vap_getkey(cmd, vap, NULL) == 0) {
                /* NB: only root can read key data */
                ik.ik_keyrsc = wk->wk_keyrsc[IEEE80211_NONQOS_TID];
                ik.ik_keytsc = wk->wk_keytsc;
                memcpy(ik.ik_keydata, wk->wk_key, wk->wk_keylen);
                if (cip->ic_cipher == IEEE80211_CIPHER_TKIP) {
                        memcpy(ik.ik_keydata+wk->wk_keylen,
                                wk->wk_key + IEEE80211_KEYBUF_SIZE,
                                IEEE80211_MICBUF_SIZE);
                        ik.ik_keylen += IEEE80211_MICBUF_SIZE;
                }
        } else {
                ik.ik_keyrsc = 0;
                ik.ik_keytsc = 0;
                memset(ik.ik_keydata, 0, sizeof(ik.ik_keydata));
        }
        if (ni != NULL)
                ieee80211_free_node(ni);
        return copyout(&ik, ireq->i_data, sizeof(ik));
}

static int
ieee80211_ioctl_getchanlist(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;

        if (sizeof(ic->ic_chan_active) < ireq->i_len)
                ireq->i_len = sizeof(ic->ic_chan_active);
        return copyout(&ic->ic_chan_active, ireq->i_data, ireq->i_len);
}

static int
ieee80211_ioctl_getchaninfo(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        uint32_t space;

        space = __offsetof(struct ieee80211req_chaninfo,
                        ic_chans[ic->ic_nchans]);
        if (space > ireq->i_len)
                space = ireq->i_len;
        /* XXX assumes compatible layout */
        return copyout(&ic->ic_nchans, ireq->i_data, space);
}

static int
ieee80211_ioctl_getwpaie(struct ieee80211vap *vap,
        struct ieee80211req *ireq, int req)
{
        struct ieee80211_node *ni;
        struct ieee80211req_wpaie2 *wpaie;
        int error;

        if (ireq->i_len < IEEE80211_ADDR_LEN)
                return EINVAL;
        wpaie = IEEE80211_MALLOC(sizeof(*wpaie), M_TEMP,
            IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (wpaie == NULL)
                return ENOMEM;
        error = copyin(ireq->i_data, wpaie->wpa_macaddr, IEEE80211_ADDR_LEN);
        if (error != 0)
                goto bad;
        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, wpaie->wpa_macaddr);
        if (ni == NULL) {
                error = ENOENT;
                goto bad;
        }
        if (ni->ni_ies.wpa_ie != NULL) {
                int ielen = ni->ni_ies.wpa_ie[1] + 2;
                if (ielen > sizeof(wpaie->wpa_ie))
                        ielen = sizeof(wpaie->wpa_ie);
                memcpy(wpaie->wpa_ie, ni->ni_ies.wpa_ie, ielen);
        }
        if (req == IEEE80211_IOC_WPAIE2) {
                if (ni->ni_ies.rsn_ie != NULL) {
                        int ielen = ni->ni_ies.rsn_ie[1] + 2;
                        if (ielen > sizeof(wpaie->rsn_ie))
                                ielen = sizeof(wpaie->rsn_ie);
                        memcpy(wpaie->rsn_ie, ni->ni_ies.rsn_ie, ielen);
                }
                if (ireq->i_len > sizeof(struct ieee80211req_wpaie2))
                        ireq->i_len = sizeof(struct ieee80211req_wpaie2);
        } else {
                /* compatibility op, may overwrite wpa ie */
                /* XXX check ic_flags? */
                if (ni->ni_ies.rsn_ie != NULL) {
                        int ielen = ni->ni_ies.rsn_ie[1] + 2;
                        if (ielen > sizeof(wpaie->wpa_ie))
                                ielen = sizeof(wpaie->wpa_ie);
                        memcpy(wpaie->wpa_ie, ni->ni_ies.rsn_ie, ielen);
                }
                if (ireq->i_len > sizeof(struct ieee80211req_wpaie))
                        ireq->i_len = sizeof(struct ieee80211req_wpaie);
        }
        ieee80211_free_node(ni);
        error = copyout(wpaie, ireq->i_data, ireq->i_len);
bad:
        IEEE80211_FREE(wpaie, M_TEMP);
        return error;
}

static int
ieee80211_ioctl_getstastats(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_node *ni;
        uint8_t macaddr[IEEE80211_ADDR_LEN];
        const size_t off = __offsetof(struct ieee80211req_sta_stats, is_stats);
        int error;

        if (ireq->i_len < off)
                return EINVAL;
        error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
        if (error != 0)
                return error;
        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr);
        if (ni == NULL)
                return ENOENT;
        if (ireq->i_len > sizeof(struct ieee80211req_sta_stats))
                ireq->i_len = sizeof(struct ieee80211req_sta_stats);
        /* NB: copy out only the statistics */
        error = copyout(&ni->ni_stats, (uint8_t *) ireq->i_data + off,
                        ireq->i_len - off);
        ieee80211_free_node(ni);
        return error;
}

struct scanreq {
        struct ieee80211req_scan_result *sr;
        size_t space;
};

static size_t
scan_space(const struct ieee80211_scan_entry *se, int *ielen)
{
        size_t len;

        *ielen = se->se_ies.len;
        /*
         * NB: ie's can be no more than 255 bytes and the max 802.11
         * packet is <3Kbytes so we are sure this doesn't overflow
         * 16-bits; if this is a concern we can drop the ie's.
         */
        len = sizeof(struct ieee80211req_scan_result) + se->se_ssid[1] +
            se->se_meshid[1] + *ielen;
        return roundup(len, sizeof(uint32_t));
}

static void
get_scan_space(void *arg, const struct ieee80211_scan_entry *se)
{
        struct scanreq *req = arg;
        int ielen;

        req->space += scan_space(se, &ielen);
}

static void
get_scan_result(void *arg, const struct ieee80211_scan_entry *se)
{
        struct scanreq *req = arg;
        struct ieee80211req_scan_result *sr;
        int ielen, len, nr, nxr;
        uint8_t *cp;

        len = scan_space(se, &ielen);
        if (len > req->space)
                return;

        sr = req->sr;
        KASSERT(len <= 65535 && ielen <= 65535,
            ("len %u ssid %u ie %u", len, se->se_ssid[1], ielen));
        sr->isr_len = len;
        sr->isr_ie_off = sizeof(struct ieee80211req_scan_result);
        sr->isr_ie_len = ielen;
        sr->isr_freq = se->se_chan->ic_freq;
        sr->isr_flags = se->se_chan->ic_flags;
        sr->isr_rssi = se->se_rssi;
        sr->isr_noise = se->se_noise;
        sr->isr_intval = se->se_intval;
        sr->isr_capinfo = se->se_capinfo;
        sr->isr_erp = se->se_erp;
        IEEE80211_ADDR_COPY(sr->isr_bssid, se->se_bssid);
        nr = min(se->se_rates[1], IEEE80211_RATE_MAXSIZE);
        memcpy(sr->isr_rates, se->se_rates+2, nr);
        nxr = min(se->se_xrates[1], IEEE80211_RATE_MAXSIZE - nr);
        memcpy(sr->isr_rates+nr, se->se_xrates+2, nxr);
        sr->isr_nrates = nr + nxr;

        /* copy SSID */
        sr->isr_ssid_len = se->se_ssid[1];
        cp = ((uint8_t *)sr) + sr->isr_ie_off;
        memcpy(cp, se->se_ssid+2, sr->isr_ssid_len);

        /* copy mesh id */
        cp += sr->isr_ssid_len;
        sr->isr_meshid_len = se->se_meshid[1];
        memcpy(cp, se->se_meshid+2, sr->isr_meshid_len);
        cp += sr->isr_meshid_len;

        if (ielen)
                memcpy(cp, se->se_ies.data, ielen);

        req->space -= len;
        req->sr = (struct ieee80211req_scan_result *)(((uint8_t *)sr) + len);
}

static int
ieee80211_ioctl_getscanresults(struct ieee80211vap *vap,
        struct ieee80211req *ireq)
{
        struct scanreq req;
        int error;

        if (ireq->i_len < sizeof(struct scanreq))
                return EFAULT;

        error = 0;
        req.space = 0;
        ieee80211_scan_iterate(vap, get_scan_space, &req);
        if (req.space > ireq->i_len)
                req.space = ireq->i_len;
        if (req.space > 0) {
                uint32_t space;
                void *p;

                space = req.space;
                /* XXX IEEE80211_M_WAITOK after driver lock released */
                p = IEEE80211_MALLOC(space, M_TEMP,
                    IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
                if (p == NULL)
                        return ENOMEM;
                req.sr = p;
                ieee80211_scan_iterate(vap, get_scan_result, &req);
                ireq->i_len = space - req.space;
                error = copyout(p, ireq->i_data, ireq->i_len);
                IEEE80211_FREE(p, M_TEMP);
        } else
                ireq->i_len = 0;

        return error;
}

struct stainforeq {
        struct ieee80211req_sta_info *si;
        size_t  space;
};

static size_t
sta_space(const struct ieee80211_node *ni, size_t *ielen)
{
        *ielen = ni->ni_ies.len;
        return roundup(sizeof(struct ieee80211req_sta_info) + *ielen,
                      sizeof(uint32_t));
}

static void
get_sta_space(void *arg, struct ieee80211_node *ni)
{
        struct stainforeq *req = arg;
        size_t ielen;

        if (ni->ni_vap->iv_opmode == IEEE80211_M_HOSTAP &&
            ni->ni_associd == 0)        /* only associated stations */
                return;
        req->space += sta_space(ni, &ielen);
}

static void
get_sta_info(void *arg, struct ieee80211_node *ni)
{
        struct stainforeq *req = arg;
        struct ieee80211_node_txrate tr;
        struct ieee80211vap *vap = ni->ni_vap;
        struct ieee80211req_sta_info *si;
        size_t ielen, len;
        uint8_t *cp;

        if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
            ni->ni_associd == 0)        /* only associated stations */
                return;
        if (ni->ni_chan == IEEE80211_CHAN_ANYC) /* XXX bogus entry */
                return;
        len = sta_space(ni, &ielen);
        if (len > req->space)
                return;
        si = req->si;
        si->isi_len = len;
        si->isi_ie_off = sizeof(struct ieee80211req_sta_info);
        si->isi_ie_len = ielen;
        si->isi_freq = ni->ni_chan->ic_freq;
        si->isi_flags = ni->ni_chan->ic_flags;
        si->isi_state = ni->ni_flags;
        si->isi_authmode = ni->ni_authmode;
        vap->iv_ic->ic_node_getsignal(ni, &si->isi_rssi, &si->isi_noise);
        vap->iv_ic->ic_node_getmimoinfo(ni, &si->isi_mimo);
        si->isi_capinfo = ni->ni_capinfo;
        si->isi_erp = ni->ni_erp;
        IEEE80211_ADDR_COPY(si->isi_macaddr, ni->ni_macaddr);
        si->isi_nrates = ni->ni_rates.rs_nrates;
        if (si->isi_nrates > 15)
                si->isi_nrates = 15;
        memcpy(si->isi_rates, ni->ni_rates.rs_rates, si->isi_nrates);
        /*
         * isi_txrate can only represent the legacy/HT rates.
         * Only set it if the rate is a legacy/HT rate.
         *
         * TODO: For VHT and later rates the API will need changing.
         */
        ieee80211_node_get_txrate(ni, &tr);
        if ((tr.type == IEEE80211_NODE_TXRATE_LEGACY) ||
            (tr.type == IEEE80211_NODE_TXRATE_HT))
                si->isi_txrate = ieee80211_node_get_txrate_dot11rate(ni);
        /* Note: txmbps is in 1/2Mbit/s units */
        si->isi_txmbps = ieee80211_node_get_txrate_kbit(ni) / 500;
        si->isi_associd = ni->ni_associd;
        si->isi_txpower = ni->ni_txpower;
        si->isi_vlan = ni->ni_vlan;
        if (ni->ni_flags & IEEE80211_NODE_QOS) {
                memcpy(si->isi_txseqs, ni->ni_txseqs, sizeof(ni->ni_txseqs));
                memcpy(si->isi_rxseqs, ni->ni_rxseqs, sizeof(ni->ni_rxseqs));
        } else {
                si->isi_txseqs[0] = ni->ni_txseqs[IEEE80211_NONQOS_TID];
                si->isi_rxseqs[0] = ni->ni_rxseqs[IEEE80211_NONQOS_TID];
        }
        /* NB: leave all cases in case we relax ni_associd == 0 check */
        if (ieee80211_node_is_authorized(ni))
                si->isi_inact = vap->iv_inact_run;
        else if (ni->ni_associd != 0 ||
            (vap->iv_opmode == IEEE80211_M_WDS &&
             (vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY)))
                si->isi_inact = vap->iv_inact_auth;
        else
                si->isi_inact = vap->iv_inact_init;
        si->isi_inact = (si->isi_inact - ni->ni_inact) * IEEE80211_INACT_WAIT;
        si->isi_localid = ni->ni_mllid;
        si->isi_peerid = ni->ni_mlpid;
        si->isi_peerstate = ni->ni_mlstate;

        if (ielen) {
                cp = ((uint8_t *)si) + si->isi_ie_off;
                memcpy(cp, ni->ni_ies.data, ielen);
        }

        req->si = (struct ieee80211req_sta_info *)(((uint8_t *)si) + len);
        req->space -= len;
}

static int
getstainfo_common(struct ieee80211vap *vap, struct ieee80211req *ireq,
        struct ieee80211_node *ni, size_t off)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct stainforeq req;
        size_t space;
        void *p;
        int error;

        error = 0;
        req.space = 0;
        if (ni == NULL) {
                ieee80211_iterate_nodes_vap(&ic->ic_sta, vap, get_sta_space,
                    &req);
        } else
                get_sta_space(&req, ni);
        if (req.space > ireq->i_len)
                req.space = ireq->i_len;
        if (req.space > 0) {
                space = req.space;
                /* XXX IEEE80211_M_WAITOK after driver lock released */
                p = IEEE80211_MALLOC(space, M_TEMP,
                    IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
                if (p == NULL) {
                        error = ENOMEM;
                        goto bad;
                }
                req.si = p;
                if (ni == NULL) {
                        ieee80211_iterate_nodes_vap(&ic->ic_sta, vap,
                            get_sta_info, &req);
                } else
                        get_sta_info(&req, ni);
                ireq->i_len = space - req.space;
                error = copyout(p, (uint8_t *) ireq->i_data+off, ireq->i_len);
                IEEE80211_FREE(p, M_TEMP);
        } else
                ireq->i_len = 0;
bad:
        if (ni != NULL)
                ieee80211_free_node(ni);
        return error;
}

static int
ieee80211_ioctl_getstainfo(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        uint8_t macaddr[IEEE80211_ADDR_LEN];
        const size_t off = __offsetof(struct ieee80211req_sta_req, info);
        struct ieee80211_node *ni;
        int error;

        if (ireq->i_len < sizeof(struct ieee80211req_sta_req))
                return EFAULT;
        error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
        if (error != 0)
                return error;
        if (IEEE80211_ADDR_EQ(macaddr,
            ieee80211_vap_get_broadcast_address(vap))) {
                ni = NULL;
        } else {
                ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr);
                if (ni == NULL)
                        return ENOENT;
        }
        return getstainfo_common(vap, ireq, ni, off);
}

static int
ieee80211_ioctl_getstatxpow(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_node *ni;
        struct ieee80211req_sta_txpow txpow;
        int error;

        if (ireq->i_len != sizeof(txpow))
                return EINVAL;
        error = copyin(ireq->i_data, &txpow, sizeof(txpow));
        if (error != 0)
                return error;
        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, txpow.it_macaddr);
        if (ni == NULL)
                return ENOENT;
        txpow.it_txpow = ni->ni_txpower;
        error = copyout(&txpow, ireq->i_data, sizeof(txpow));
        ieee80211_free_node(ni);
        return error;
}

static int
ieee80211_ioctl_getwmeparam(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_wme_state *wme = &ic->ic_wme;
        struct wmeParams *wmep;
        int ac;

        if ((ic->ic_caps & IEEE80211_C_WME) == 0)
                return EINVAL;

        ac = (ireq->i_len & IEEE80211_WMEPARAM_VAL);
        if (ac >= WME_NUM_AC)
                ac = WME_AC_BE;
        if (ireq->i_len & IEEE80211_WMEPARAM_BSS)
                wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac];
        else
                wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac];
        switch (ireq->i_type) {
        case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
                ireq->i_val = wmep->wmep_logcwmin;
                break;
        case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
                ireq->i_val = wmep->wmep_logcwmax;
                break;
        case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
                ireq->i_val = wmep->wmep_aifsn;
                break;
        case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
                ireq->i_val = wmep->wmep_txopLimit;
                break;
        case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
                wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac];
                ireq->i_val = wmep->wmep_acm;
                break;
        case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (!bss only)*/
                wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac];
                ireq->i_val = !wmep->wmep_noackPolicy;
                break;
        }
        return 0;
}

static int
ieee80211_ioctl_getmaccmd(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        const struct ieee80211_aclator *acl = vap->iv_acl;

        return (acl == NULL ? EINVAL : acl->iac_getioctl(vap, ireq));
}

static int
ieee80211_ioctl_getcurchan(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_channel *c;

        if (ireq->i_len != sizeof(struct ieee80211_channel))
                return EINVAL;
        /*
         * vap's may have different operating channels when HT is
         * in use.  When in RUN state report the vap-specific channel.
         * Otherwise return curchan.
         */
        if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP)
                c = vap->iv_bss->ni_chan;
        else
                c = ic->ic_curchan;
        return copyout(c, ireq->i_data, sizeof(*c));
}

static int
getappie(const struct ieee80211_appie *aie, struct ieee80211req *ireq)
{
        if (aie == NULL)
                return EINVAL;
        /* NB: truncate, caller can check length */
        if (ireq->i_len > aie->ie_len)
                ireq->i_len = aie->ie_len;
        return copyout(aie->ie_data, ireq->i_data, ireq->i_len);
}

static int
ieee80211_ioctl_getappie(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        uint8_t fc0;

        fc0 = ireq->i_val & 0xff;
        if ((fc0 & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
                return EINVAL;
        /* NB: could check iv_opmode and reject but hardly worth the effort */
        switch (fc0 & IEEE80211_FC0_SUBTYPE_MASK) {
        case IEEE80211_FC0_SUBTYPE_BEACON:
                return getappie(vap->iv_appie_beacon, ireq);
        case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
                return getappie(vap->iv_appie_proberesp, ireq);
        case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
                return getappie(vap->iv_appie_assocresp, ireq);
        case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
                return getappie(vap->iv_appie_probereq, ireq);
        case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
                return getappie(vap->iv_appie_assocreq, ireq);
        case IEEE80211_FC0_SUBTYPE_BEACON|IEEE80211_FC0_SUBTYPE_PROBE_RESP:
                return getappie(vap->iv_appie_wpa, ireq);
        }
        return EINVAL;
}

static int
ieee80211_ioctl_getregdomain(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;

        if (ireq->i_len != sizeof(ic->ic_regdomain))
                return EINVAL;
        return copyout(&ic->ic_regdomain, ireq->i_data,
            sizeof(ic->ic_regdomain));
}

static int
ieee80211_ioctl_getroam(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        size_t len = ireq->i_len;
        /* NB: accept short requests for backwards compat */
        if (len > sizeof(vap->iv_roamparms))
                len = sizeof(vap->iv_roamparms);
        return copyout(vap->iv_roamparms, ireq->i_data, len);
}

static int
ieee80211_ioctl_gettxparams(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        size_t len = ireq->i_len;
        /* NB: accept short requests for backwards compat */
        if (len > sizeof(vap->iv_txparms))
                len = sizeof(vap->iv_txparms);
        return copyout(vap->iv_txparms, ireq->i_data, len);
}

static int
ieee80211_ioctl_getdevcaps(struct ieee80211com *ic,
        const struct ieee80211req *ireq)
{
        struct ieee80211_devcaps_req *dc;
        struct ieee80211req_chaninfo *ci;
        int maxchans, error;

        maxchans = 1 + ((ireq->i_len - sizeof(struct ieee80211_devcaps_req)) /
            sizeof(struct ieee80211_channel));
        /* NB: require 1 so we know ic_nchans is accessible */
        if (maxchans < 1)
                return EINVAL;
        /* constrain max request size, 2K channels is ~24Kbytes */
        if (maxchans > 2048)
                maxchans = 2048;
        dc = (struct ieee80211_devcaps_req *)
            IEEE80211_MALLOC(IEEE80211_DEVCAPS_SIZE(maxchans), M_TEMP,
            IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (dc == NULL)
                return ENOMEM;
        dc->dc_drivercaps = ic->ic_caps;
        /*
         * Announce the set of both hardware and software supported
         * ciphers.
         */
        dc->dc_cryptocaps = ic->ic_cryptocaps | ic->ic_sw_cryptocaps;
        dc->dc_htcaps = ic->ic_htcaps;
        dc->dc_vhtcaps = ic->ic_vht_cap.vht_cap_info;
        ci = &dc->dc_chaninfo;
        ic->ic_getradiocaps(ic, maxchans, &ci->ic_nchans, ci->ic_chans);
        KASSERT(ci->ic_nchans <= maxchans,
            ("nchans %d maxchans %d", ci->ic_nchans, maxchans));
        ieee80211_sort_channels(ci->ic_chans, ci->ic_nchans);
        error = copyout(dc, ireq->i_data, IEEE80211_DEVCAPS_SPACE(dc));
        IEEE80211_FREE(dc, M_TEMP);
        return error;
}

static int
ieee80211_ioctl_getstavlan(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_node *ni;
        struct ieee80211req_sta_vlan vlan;
        int error;

        if (ireq->i_len != sizeof(vlan))
                return EINVAL;
        error = copyin(ireq->i_data, &vlan, sizeof(vlan));
        if (error != 0)
                return error;
        if (!IEEE80211_ADDR_EQ(vlan.sv_macaddr, zerobssid)) {
                ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
                    vlan.sv_macaddr);
                if (ni == NULL)
                        return ENOENT;
        } else
                ni = ieee80211_ref_node(vap->iv_bss);
        vlan.sv_vlan = ni->ni_vlan;
        error = copyout(&vlan, ireq->i_data, sizeof(vlan));
        ieee80211_free_node(ni);
        return error;
}

/*
 * Dummy ioctl get handler so the linker set is defined.
 */
static int
dummy_ioctl_get(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        return ENOSYS;
}
IEEE80211_IOCTL_GET(dummy, dummy_ioctl_get);

static int
ieee80211_ioctl_getdefault(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        ieee80211_ioctl_getfunc * const *get;
        int error;

        SET_FOREACH(get, ieee80211_ioctl_getset) {
                error = (*get)(vap, ireq);
                if (error != ENOSYS)
                        return error;
        }
        return EINVAL;
}

static int
ieee80211_ioctl_get80211(struct ieee80211vap *vap, u_long cmd,
    struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        u_int kid, len;
        uint8_t tmpkey[IEEE80211_KEYBUF_SIZE];
        char tmpssid[IEEE80211_NWID_LEN];
        int error = 0;

        switch (ireq->i_type) {
        case IEEE80211_IOC_IC_NAME:
                len = strlen(ic->ic_name) + 1;
                if (len > ireq->i_len)
                        return (EINVAL);
                ireq->i_len = len;
                error = copyout(ic->ic_name, ireq->i_data, ireq->i_len);
                break;
        case IEEE80211_IOC_SSID:
                switch (vap->iv_state) {
                case IEEE80211_S_INIT:
                case IEEE80211_S_SCAN:
                        ireq->i_len = vap->iv_des_ssid[0].len;
                        memcpy(tmpssid, vap->iv_des_ssid[0].ssid, ireq->i_len);
                        break;
                default:
                        ireq->i_len = vap->iv_bss->ni_esslen;
                        memcpy(tmpssid, vap->iv_bss->ni_essid, ireq->i_len);
                        break;
                }
                error = copyout(tmpssid, ireq->i_data, ireq->i_len);
                break;
        case IEEE80211_IOC_NUMSSIDS:
                ireq->i_val = 1;
                break;
        case IEEE80211_IOC_WEP:
                if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0)
                        ireq->i_val = IEEE80211_WEP_OFF;
                else if (vap->iv_flags & IEEE80211_F_DROPUNENC)
                        ireq->i_val = IEEE80211_WEP_ON;
                else
                        ireq->i_val = IEEE80211_WEP_MIXED;
                break;
        case IEEE80211_IOC_WEPKEY:
                kid = (u_int) ireq->i_val;
                if (kid >= IEEE80211_WEP_NKID)
                        return EINVAL;
                len = (u_int) vap->iv_nw_keys[kid].wk_keylen;
                /* NB: only root can read WEP keys */
                if (ieee80211_priv_check_vap_getkey(cmd, vap, NULL) == 0) {
                        bcopy(vap->iv_nw_keys[kid].wk_key, tmpkey, len);
                } else {
                        bzero(tmpkey, len);
                }
                ireq->i_len = len;
                error = copyout(tmpkey, ireq->i_data, len);
                break;
        case IEEE80211_IOC_NUMWEPKEYS:
                ireq->i_val = IEEE80211_WEP_NKID;
                break;
        case IEEE80211_IOC_WEPTXKEY:
                ireq->i_val = vap->iv_def_txkey;
                break;
        case IEEE80211_IOC_AUTHMODE:
                if (vap->iv_flags & IEEE80211_F_WPA)
                        ireq->i_val = IEEE80211_AUTH_WPA;
                else
                        ireq->i_val = vap->iv_bss->ni_authmode;
                break;
        case IEEE80211_IOC_CHANNEL:
                ireq->i_val = ieee80211_chan2ieee(ic, ic->ic_curchan);
                break;
        case IEEE80211_IOC_POWERSAVE:
                if (vap->iv_flags & IEEE80211_F_PMGTON)
                        ireq->i_val = IEEE80211_POWERSAVE_ON;
                else
                        ireq->i_val = IEEE80211_POWERSAVE_OFF;
                break;
        case IEEE80211_IOC_POWERSAVESLEEP:
                ireq->i_val = ic->ic_lintval;
                break;
        case IEEE80211_IOC_RTSTHRESHOLD:
                ireq->i_val = vap->iv_rtsthreshold;
                break;
        case IEEE80211_IOC_PROTMODE:
                ireq->i_val = vap->iv_protmode;
                break;
        case IEEE80211_IOC_TXPOWER:
                /*
                 * Tx power limit is the min of max regulatory
                 * power, any user-set limit, and the max the
                 * radio can do.
                 *
                 * TODO: methodize this
                 */
                ireq->i_val = 2*ic->ic_curchan->ic_maxregpower;
                if (ireq->i_val > ic->ic_txpowlimit)
                        ireq->i_val = ic->ic_txpowlimit;
                if (ireq->i_val > ic->ic_curchan->ic_maxpower)
                        ireq->i_val = ic->ic_curchan->ic_maxpower;
                break;
        case IEEE80211_IOC_WPA:
                switch (vap->iv_flags & IEEE80211_F_WPA) {
                case IEEE80211_F_WPA1:
                        ireq->i_val = 1;
                        break;
                case IEEE80211_F_WPA2:
                        ireq->i_val = 2;
                        break;
                case IEEE80211_F_WPA1 | IEEE80211_F_WPA2:
                        ireq->i_val = 3;
                        break;
                default:
                        ireq->i_val = 0;
                        break;
                }
                break;
        case IEEE80211_IOC_CHANLIST:
                error = ieee80211_ioctl_getchanlist(vap, ireq);
                break;
        case IEEE80211_IOC_ROAMING:
                ireq->i_val = vap->iv_roaming;
                break;
        case IEEE80211_IOC_PRIVACY:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_PRIVACY) != 0;
                break;
        case IEEE80211_IOC_DROPUNENCRYPTED:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_DROPUNENC) != 0;
                break;
        case IEEE80211_IOC_COUNTERMEASURES:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_COUNTERM) != 0;
                break;
        case IEEE80211_IOC_WME:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_WME) != 0;
                break;
        case IEEE80211_IOC_HIDESSID:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_HIDESSID) != 0;
                break;
        case IEEE80211_IOC_APBRIDGE:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_NOBRIDGE) == 0;
                break;
        case IEEE80211_IOC_WPAKEY:
                error = ieee80211_ioctl_getkey(cmd, vap, ireq);
                break;
        case IEEE80211_IOC_CHANINFO:
                error = ieee80211_ioctl_getchaninfo(vap, ireq);
                break;
        case IEEE80211_IOC_BSSID:
                if (ireq->i_len != IEEE80211_ADDR_LEN)
                        return EINVAL;
                if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) {
                        error = copyout(vap->iv_opmode == IEEE80211_M_WDS ?
                            vap->iv_bss->ni_macaddr : vap->iv_bss->ni_bssid,
                            ireq->i_data, ireq->i_len);
                } else
                        error = copyout(vap->iv_des_bssid, ireq->i_data,
                            ireq->i_len);
                break;
        case IEEE80211_IOC_WPAIE:
        case IEEE80211_IOC_WPAIE2:
                error = ieee80211_ioctl_getwpaie(vap, ireq, ireq->i_type);
                break;
        case IEEE80211_IOC_SCAN_RESULTS:
                error = ieee80211_ioctl_getscanresults(vap, ireq);
                break;
        case IEEE80211_IOC_STA_STATS:
                error = ieee80211_ioctl_getstastats(vap, ireq);
                break;
        case IEEE80211_IOC_TXPOWMAX:
                ireq->i_val = vap->iv_bss->ni_txpower;
                break;
        case IEEE80211_IOC_STA_TXPOW:
                error = ieee80211_ioctl_getstatxpow(vap, ireq);
                break;
        case IEEE80211_IOC_STA_INFO:
                error = ieee80211_ioctl_getstainfo(vap, ireq);
                break;
        case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
        case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
        case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
        case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
        case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
        case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (!bss only) */
                error = ieee80211_ioctl_getwmeparam(vap, ireq);
                break;
        case IEEE80211_IOC_DTIM_PERIOD:
                ireq->i_val = vap->iv_dtim_period;
                break;
        case IEEE80211_IOC_BEACON_INTERVAL:
                /* NB: get from ic_bss for station mode */
                ireq->i_val = vap->iv_bss->ni_intval;
                break;
        case IEEE80211_IOC_PUREG:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_PUREG) != 0;
                break;
        case IEEE80211_IOC_QUIET:
                ireq->i_val = vap->iv_quiet;
                break;
        case IEEE80211_IOC_QUIET_COUNT:
                ireq->i_val = vap->iv_quiet_count;
                break;
        case IEEE80211_IOC_QUIET_PERIOD:
                ireq->i_val = vap->iv_quiet_period;
                break;
        case IEEE80211_IOC_QUIET_DUR:
                ireq->i_val = vap->iv_quiet_duration;
                break;
        case IEEE80211_IOC_QUIET_OFFSET:
                ireq->i_val = vap->iv_quiet_offset;
                break;
        case IEEE80211_IOC_BGSCAN:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_BGSCAN) != 0;
                break;
        case IEEE80211_IOC_BGSCAN_IDLE:
                ireq->i_val = vap->iv_bgscanidle*hz/1000;       /* ms */
                break;
        case IEEE80211_IOC_BGSCAN_INTERVAL:
                ireq->i_val = vap->iv_bgscanintvl/hz;           /* seconds */
                break;
        case IEEE80211_IOC_SCANVALID:
                ireq->i_val = vap->iv_scanvalid/hz;             /* seconds */
                break;
        case IEEE80211_IOC_FRAGTHRESHOLD:
                ireq->i_val = vap->iv_fragthreshold;
                break;
        case IEEE80211_IOC_MACCMD:
                error = ieee80211_ioctl_getmaccmd(vap, ireq);
                break;
        case IEEE80211_IOC_BURST:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_BURST) != 0;
                break;
        case IEEE80211_IOC_BMISSTHRESHOLD:
                ireq->i_val = vap->iv_bmissthreshold;
                break;
        case IEEE80211_IOC_CURCHAN:
                error = ieee80211_ioctl_getcurchan(vap, ireq);
                break;
        case IEEE80211_IOC_SHORTGI:
                ireq->i_val = 0;
                if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20)
                        ireq->i_val |= IEEE80211_HTCAP_SHORTGI20;
                if (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40)
                        ireq->i_val |= IEEE80211_HTCAP_SHORTGI40;
                break;
        case IEEE80211_IOC_AMPDU:
                ireq->i_val = 0;
                if (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_TX)
                        ireq->i_val |= 1;
                if (vap->iv_flags_ht & IEEE80211_FHT_AMPDU_RX)
                        ireq->i_val |= 2;
                break;
        case IEEE80211_IOC_AMPDU_LIMIT:
                /* XXX TODO: make this a per-node thing; and leave this as global */
                if (vap->iv_opmode == IEEE80211_M_HOSTAP)
                        ireq->i_val = vap->iv_ampdu_rxmax;
                else if (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP)
                        /*
                         * XXX TODO: this isn't completely correct, as we've
                         * negotiated the higher of the two.
                         */
                        ireq->i_val = _IEEE80211_MASKSHIFT( vap->iv_bss->ni_htparam,
                            IEEE80211_HTCAP_MAXRXAMPDU);
                else
                        ireq->i_val = vap->iv_ampdu_limit;
                break;
        case IEEE80211_IOC_AMPDU_DENSITY:
                /* XXX TODO: make this a per-node thing; and leave this as global */
                if (vap->iv_opmode == IEEE80211_M_STA &&
                    (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP))
                        /*
                         * XXX TODO: this isn't completely correct, as we've
                         * negotiated the higher of the two.
                         */
                        ireq->i_val = _IEEE80211_MASKSHIFT(vap->iv_bss->ni_htparam,
                            IEEE80211_HTCAP_MPDUDENSITY);
                else
                        ireq->i_val = vap->iv_ampdu_density;
                break;
        case IEEE80211_IOC_AMSDU:
                ireq->i_val = 0;
                if (vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX)
                        ireq->i_val |= 1;
                if (vap->iv_flags_ht & IEEE80211_FHT_AMSDU_RX)
                        ireq->i_val |= 2;
                break;
        case IEEE80211_IOC_AMSDU_LIMIT:
                ireq->i_val = vap->iv_amsdu_limit;      /* XXX truncation? */
                break;
        case IEEE80211_IOC_PUREN:
                ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_PUREN) != 0;
                break;
        case IEEE80211_IOC_DOTH:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_DOTH) != 0;
                break;
        case IEEE80211_IOC_REGDOMAIN:
                error = ieee80211_ioctl_getregdomain(vap, ireq);
                break;
        case IEEE80211_IOC_ROAM:
                error = ieee80211_ioctl_getroam(vap, ireq);
                break;
        case IEEE80211_IOC_TXPARAMS:
                error = ieee80211_ioctl_gettxparams(vap, ireq);
                break;
        case IEEE80211_IOC_HTCOMPAT:
                ireq->i_val = (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) != 0;
                break;
        case IEEE80211_IOC_DWDS:
                ireq->i_val = (vap->iv_flags & IEEE80211_F_DWDS) != 0;
                break;
        case IEEE80211_IOC_INACTIVITY:
                ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_INACT) != 0;
                break;
        case IEEE80211_IOC_APPIE:
                error = ieee80211_ioctl_getappie(vap, ireq);
                break;
        case IEEE80211_IOC_WPS:
                ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_WPS) != 0;
                break;
        case IEEE80211_IOC_TSN:
                ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_TSN) != 0;
                break;
        case IEEE80211_IOC_DFS:
                ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_DFS) != 0;
                break;
        case IEEE80211_IOC_DOTD:
                ireq->i_val = (vap->iv_flags_ext & IEEE80211_FEXT_DOTD) != 0;
                break;
        case IEEE80211_IOC_DEVCAPS:
                error = ieee80211_ioctl_getdevcaps(ic, ireq);
                break;
        case IEEE80211_IOC_HTPROTMODE:
                ireq->i_val = vap->iv_htprotmode;
                break;
        case IEEE80211_IOC_HTCONF:
                if (vap->iv_flags_ht & IEEE80211_FHT_HT) {
                        ireq->i_val = 1;
                        if (vap->iv_flags_ht & IEEE80211_FHT_USEHT40)
                                ireq->i_val |= 2;
                } else
                        ireq->i_val = 0;
                break;
        case IEEE80211_IOC_STA_VLAN:
                error = ieee80211_ioctl_getstavlan(vap, ireq);
                break;
        case IEEE80211_IOC_SMPS:
                if (vap->iv_opmode == IEEE80211_M_STA &&
                    (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP)) {
                        if (vap->iv_bss->ni_flags & IEEE80211_NODE_MIMO_RTS)
                                ireq->i_val = IEEE80211_HTCAP_SMPS_DYNAMIC;
                        else if (vap->iv_bss->ni_flags & IEEE80211_NODE_MIMO_PS)
                                ireq->i_val = IEEE80211_HTCAP_SMPS_ENA;
                        else
                                ireq->i_val = IEEE80211_HTCAP_SMPS_OFF;
                } else
                        ireq->i_val = vap->iv_htcaps & IEEE80211_HTCAP_SMPS;
                break;
        case IEEE80211_IOC_RIFS:
                if (vap->iv_opmode == IEEE80211_M_STA &&
                    (vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP))
                        ireq->i_val =
                            (vap->iv_bss->ni_flags & IEEE80211_NODE_RIFS) != 0;
                else
                        ireq->i_val =
                            (vap->iv_flags_ht & IEEE80211_FHT_RIFS) != 0;
                break;
        case IEEE80211_IOC_STBC:
                ireq->i_val = 0;
                if (vap->iv_flags_ht & IEEE80211_FHT_STBC_TX)
                        ireq->i_val |= 1;
                if (vap->iv_flags_ht & IEEE80211_FHT_STBC_RX)
                        ireq->i_val |= 2;
                break;
        case IEEE80211_IOC_LDPC:
                ireq->i_val = 0;
                if (vap->iv_flags_ht & IEEE80211_FHT_LDPC_TX)
                        ireq->i_val |= 1;
                if (vap->iv_flags_ht & IEEE80211_FHT_LDPC_RX)
                        ireq->i_val |= 2;
                break;
        case IEEE80211_IOC_UAPSD:
                ireq->i_val = 0;
                if (vap->iv_flags_ext & IEEE80211_FEXT_UAPSD)
                        ireq->i_val = 1;
                break;
        case IEEE80211_IOC_VHTCONF:
                ireq->i_val = vap->iv_vht_flags & IEEE80211_FVHT_MASK;
                break;
        default:
                error = ieee80211_ioctl_getdefault(vap, ireq);
                break;
        }
        return error;
}

static int
ieee80211_ioctl_setkey(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211req_key ik;
        struct ieee80211_node *ni;
        struct ieee80211_key *wk;
        uint16_t kid;
        int error, i;

        if (ireq->i_len != sizeof(ik))
                return EINVAL;
        error = copyin(ireq->i_data, &ik, sizeof(ik));
        if (error)
                return error;
        /* NB: cipher support is verified by ieee80211_crypt_newkey */
        /* NB: this also checks ik->ik_keylen > sizeof(wk->wk_key) */
        if (ik.ik_keylen > sizeof(ik.ik_keydata))
                return E2BIG;
        kid = ik.ik_keyix;
        if (kid == IEEE80211_KEYIX_NONE) {
                /* XXX unicast keys currently must be tx/rx */
                if (ik.ik_flags != (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV))
                        return EINVAL;
                if (vap->iv_opmode == IEEE80211_M_STA) {
                        ni = ieee80211_ref_node(vap->iv_bss);
                        if (!IEEE80211_ADDR_EQ(ik.ik_macaddr, ni->ni_bssid)) {
                                ieee80211_free_node(ni);
                                return EADDRNOTAVAIL;
                        }
                } else {
                        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
                                ik.ik_macaddr);
                        if (ni == NULL)
                                return ENOENT;
                }
                wk = &ni->ni_ucastkey;
        } else {
                if (kid >= IEEE80211_WEP_NKID)
                        return EINVAL;
                wk = &vap->iv_nw_keys[kid];
                /*
                 * Global slots start off w/o any assigned key index.
                 * Force one here for consistency with IEEE80211_IOC_WEPKEY.
                 */
                if (wk->wk_keyix == IEEE80211_KEYIX_NONE)
                        wk->wk_keyix = kid;
                ni = NULL;
        }
        error = 0;
        ieee80211_key_update_begin(vap);
        if (ieee80211_crypto_newkey(vap, ik.ik_type, ik.ik_flags, wk)) {
                wk->wk_keylen = ik.ik_keylen;
                /* NB: MIC presence is implied by cipher type */
                if (wk->wk_keylen > IEEE80211_KEYBUF_SIZE)
                        wk->wk_keylen = IEEE80211_KEYBUF_SIZE;
                for (i = 0; i < IEEE80211_TID_SIZE; i++)
                        wk->wk_keyrsc[i] = ik.ik_keyrsc;
                wk->wk_keytsc = 0;                      /* new key, reset */
                memset(wk->wk_key, 0, sizeof(wk->wk_key));
                memcpy(wk->wk_key, ik.ik_keydata, ik.ik_keylen);
                IEEE80211_ADDR_COPY(wk->wk_macaddr,
                    ni != NULL ?  ni->ni_macaddr : ik.ik_macaddr);
                if (!ieee80211_crypto_setkey(vap, wk))
                        error = EIO;
                else if ((ik.ik_flags & IEEE80211_KEY_DEFAULT))
                        /*
                         * Inform the driver that this is the default
                         * transmit key.  Now, ideally we'd just set
                         * a flag in the key update that would
                         * say "yes, we're the default key", but
                         * that currently isn't the way the ioctl ->
                         * key interface works.
                         */
                        ieee80211_crypto_set_deftxkey(vap, kid);
        } else
                error = ENXIO;
        ieee80211_key_update_end(vap);
        if (ni != NULL)
                ieee80211_free_node(ni);
        return error;
}

static int
ieee80211_ioctl_delkey(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211req_del_key dk;
        int kid, error;

        if (ireq->i_len != sizeof(dk))
                return EINVAL;
        error = copyin(ireq->i_data, &dk, sizeof(dk));
        if (error)
                return error;
        kid = dk.idk_keyix;
        /* XXX uint8_t -> uint16_t */
        if (dk.idk_keyix == (uint8_t) IEEE80211_KEYIX_NONE) {
                struct ieee80211_node *ni;

                if (vap->iv_opmode == IEEE80211_M_STA) {
                        ni = ieee80211_ref_node(vap->iv_bss);
                        if (!IEEE80211_ADDR_EQ(dk.idk_macaddr, ni->ni_bssid)) {
                                ieee80211_free_node(ni);
                                return EADDRNOTAVAIL;
                        }
                } else {
                        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
                                dk.idk_macaddr);
                        if (ni == NULL)
                                return ENOENT;
                }
                /* XXX error return */
                ieee80211_node_delucastkey(ni);
                ieee80211_free_node(ni);
        } else {
                if (kid >= IEEE80211_WEP_NKID)
                        return EINVAL;
                /* XXX error return */
                ieee80211_crypto_delkey(vap, &vap->iv_nw_keys[kid]);
        }
        return 0;
}

struct mlmeop {
        struct ieee80211vap *vap;
        int     op;
        int     reason;
};

static void
mlmedebug(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN],
        int op, int reason)
{
#ifdef IEEE80211_DEBUG
        static const struct {
                int mask;
                const char *opstr;
        } ops[] = {
                { 0, "op#0" },
                { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
                  IEEE80211_MSG_ASSOC, "assoc" },
                { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
                  IEEE80211_MSG_ASSOC, "disassoc" },
                { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
                  IEEE80211_MSG_AUTH, "deauth" },
                { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
                  IEEE80211_MSG_AUTH, "authorize" },
                { IEEE80211_MSG_IOCTL | IEEE80211_MSG_STATE |
                  IEEE80211_MSG_AUTH, "unauthorize" },
        };

        if (op == IEEE80211_MLME_AUTH) {
                IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_IOCTL |
                    IEEE80211_MSG_STATE | IEEE80211_MSG_AUTH, mac,
                    "station authenticate %s via MLME (reason: %d (%s))",
                    reason == IEEE80211_STATUS_SUCCESS ? "ACCEPT" : "REJECT",
                    reason, ieee80211_reason_to_string(reason));
        } else if (!(IEEE80211_MLME_ASSOC <= op && op <= IEEE80211_MLME_AUTH)) {
                IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, mac,
                    "unknown MLME request %d (reason: %d (%s))", op, reason,
                    ieee80211_reason_to_string(reason));
        } else if (reason == IEEE80211_STATUS_SUCCESS) {
                IEEE80211_NOTE_MAC(vap, ops[op].mask, mac,
                    "station %s via MLME", ops[op].opstr);
        } else {
                IEEE80211_NOTE_MAC(vap, ops[op].mask, mac,
                    "station %s via MLME (reason: %d (%s))", ops[op].opstr,
                    reason, ieee80211_reason_to_string(reason));
        }
#endif /* IEEE80211_DEBUG */
}

static void
domlme(void *arg, struct ieee80211_node *ni)
{
        struct mlmeop *mop = arg;
        struct ieee80211vap *vap = ni->ni_vap;

        if (vap != mop->vap)
                return;
        /*
         * NB: if ni_associd is zero then the node is already cleaned
         * up and we don't need to do this (we're safely holding a
         * reference but should otherwise not modify it's state).
         */ 
        if (ni->ni_associd == 0)
                return;
        mlmedebug(vap, ni->ni_macaddr, mop->op, mop->reason);
        if (mop->op == IEEE80211_MLME_DEAUTH) {
                IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
                    mop->reason);
        } else {
                IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
                    mop->reason);
        }
        ieee80211_node_leave(ni);
}

static int
setmlme_dropsta(struct ieee80211vap *vap,
        const uint8_t mac[IEEE80211_ADDR_LEN], struct mlmeop *mlmeop)
{
        struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
        struct ieee80211_node *ni;
        int error = 0;

        /* NB: the broadcast address means do 'em all */
        if (!IEEE80211_ADDR_EQ(mac,
            ieee80211_vap_get_broadcast_address(vap))) {
                IEEE80211_NODE_LOCK(nt);
                ni = ieee80211_find_node_locked(nt, mac);
                IEEE80211_NODE_UNLOCK(nt);
                /*
                 * Don't do the node update inside the node
                 * table lock.  This unfortunately causes LORs
                 * with drivers and their TX paths.
                 */
                if (ni != NULL) {
                        domlme(mlmeop, ni);
                        ieee80211_free_node(ni);
                } else
                        error = ENOENT;
        } else {
                ieee80211_iterate_nodes(nt, domlme, mlmeop);
        }
        return error;
}

static int
setmlme_common(struct ieee80211vap *vap, int op,
        const uint8_t mac[IEEE80211_ADDR_LEN], int reason)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_node_table *nt = &ic->ic_sta;
        struct ieee80211_node *ni;
        struct mlmeop mlmeop;
        int error;

        error = 0;
        switch (op) {
        case IEEE80211_MLME_DISASSOC:
        case IEEE80211_MLME_DEAUTH:
                switch (vap->iv_opmode) {
                case IEEE80211_M_STA:
                        mlmedebug(vap, vap->iv_bss->ni_macaddr, op, reason);
                        /* XXX not quite right */
                        ieee80211_new_state(vap, IEEE80211_S_INIT, reason);
                        break;
                case IEEE80211_M_HOSTAP:
                        mlmeop.vap = vap;
                        mlmeop.op = op;
                        mlmeop.reason = reason;
                        error = setmlme_dropsta(vap, mac, &mlmeop);
                        break;
                case IEEE80211_M_WDS:
                        /* XXX user app should send raw frame? */
                        if (op != IEEE80211_MLME_DEAUTH) {
                                error = EINVAL;
                                break;
                        }
#if 0
                        /* XXX accept any address, simplifies user code */
                        if (!IEEE80211_ADDR_EQ(mac, vap->iv_bss->ni_macaddr)) {
                                error = EINVAL;
                                break;
                        }
#endif
                        mlmedebug(vap, vap->iv_bss->ni_macaddr, op, reason);
                        ni = ieee80211_ref_node(vap->iv_bss);
                        IEEE80211_SEND_MGMT(ni,
                            IEEE80211_FC0_SUBTYPE_DEAUTH, reason);
                        ieee80211_free_node(ni);
                        break;
                case IEEE80211_M_MBSS:
                        IEEE80211_NODE_LOCK(nt);
                        ni = ieee80211_find_node_locked(nt, mac);
                        /*
                         * Don't do the node update inside the node
                         * table lock.  This unfortunately causes LORs
                         * with drivers and their TX paths.
                         */
                        IEEE80211_NODE_UNLOCK(nt);
                        if (ni != NULL) {
                                ieee80211_node_leave(ni);
                                ieee80211_free_node(ni);
                        } else {
                                error = ENOENT;
                        }
                        break;
                default:
                        error = EINVAL;
                        break;
                }
                break;
        case IEEE80211_MLME_AUTHORIZE:
        case IEEE80211_MLME_UNAUTHORIZE:
                if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
                    vap->iv_opmode != IEEE80211_M_WDS) {
                        error = EINVAL;
                        break;
                }
                IEEE80211_NODE_LOCK(nt);
                ni = ieee80211_find_vap_node_locked(nt, vap, mac);
                /*
                 * Don't do the node update inside the node
                 * table lock.  This unfortunately causes LORs
                 * with drivers and their TX paths.
                 */
                IEEE80211_NODE_UNLOCK(nt);
                if (ni != NULL) {
                        mlmedebug(vap, mac, op, reason);
                        if (op == IEEE80211_MLME_AUTHORIZE)
                                ieee80211_node_authorize(ni);
                        else
                                ieee80211_node_unauthorize(ni);
                        ieee80211_free_node(ni);
                } else
                        error = ENOENT;
                break;
        case IEEE80211_MLME_AUTH:
                if (vap->iv_opmode != IEEE80211_M_HOSTAP) {
                        error = EINVAL;
                        break;
                }
                IEEE80211_NODE_LOCK(nt);
                ni = ieee80211_find_vap_node_locked(nt, vap, mac);
                /*
                 * Don't do the node update inside the node
                 * table lock.  This unfortunately causes LORs
                 * with drivers and their TX paths.
                 */
                IEEE80211_NODE_UNLOCK(nt);
                if (ni != NULL) {
                        mlmedebug(vap, mac, op, reason);
                        if (reason == IEEE80211_STATUS_SUCCESS) {
                                IEEE80211_SEND_MGMT(ni,
                                    IEEE80211_FC0_SUBTYPE_AUTH, 2);
                                /*
                                 * For shared key auth, just continue the
                                 * exchange.  Otherwise when 802.1x is not in
                                 * use mark the port authorized at this point
                                 * so traffic can flow.
                                 */
                                if (ni->ni_authmode != IEEE80211_AUTH_8021X &&
                                    ni->ni_challenge == NULL)
                                      ieee80211_node_authorize(ni);
                        } else {
                                vap->iv_stats.is_rx_acl++;
                                ieee80211_send_error(ni, ni->ni_macaddr,
                                    IEEE80211_FC0_SUBTYPE_AUTH, 2|(reason<<16));
                                ieee80211_node_leave(ni);
                        }
                        ieee80211_free_node(ni);
                } else
                        error = ENOENT;
                break;
        default:
                error = EINVAL;
                break;
        }
        return error;
}

struct scanlookup {
        const uint8_t *mac;
        int esslen;
        const uint8_t *essid;
        bool found;
        struct ieee80211_scan_entry se;
};

/*
 * Match mac address and any ssid.
 */
static void
mlmelookup(void *arg, const struct ieee80211_scan_entry *se)
{
        struct scanlookup *look = arg;
        int rv;

        if (look->found)
                return;

        if (!IEEE80211_ADDR_EQ(look->mac, se->se_macaddr))
                return;
        if (look->esslen != 0) {
                if (se->se_ssid[1] != look->esslen)
                        return;
                if (memcmp(look->essid, se->se_ssid+2, look->esslen))
                        return;
        }
        /*
         * First copy everything and then ensure we get our own copy of se_ies. */
        look->se = *se;
        look->se.se_ies.data = 0;
        look->se.se_ies.len = 0;
        rv = ieee80211_ies_init(&look->se.se_ies, se->se_ies.data, se->se_ies.len);
        if (rv != 0)    /* No error */
                look->found = true;
}

static int
setmlme_assoc_sta(struct ieee80211vap *vap,
        const uint8_t mac[IEEE80211_ADDR_LEN], int ssid_len,
        const uint8_t ssid[IEEE80211_NWID_LEN])
{
        struct scanlookup lookup;
        int rv;

        KASSERT(vap->iv_opmode == IEEE80211_M_STA,
            ("expected opmode STA not %s",
            ieee80211_opmode_name[vap->iv_opmode]));

        /* NB: this is racey if roaming is !manual */
        lookup.mac = mac;
        lookup.esslen = ssid_len;
        lookup.essid = ssid;
        memset(&lookup.se, 0, sizeof(lookup.se));
        lookup.found = false;
        ieee80211_scan_iterate(vap, mlmelookup, &lookup);
        if (!lookup.found)
                return ENOENT;
        mlmedebug(vap, mac, IEEE80211_MLME_ASSOC, 0);
        rv = ieee80211_sta_join(vap, lookup.se.se_chan, &lookup.se);
        ieee80211_ies_cleanup(&lookup.se.se_ies);
        if (rv == 0)
                return EIO;             /* XXX unique but could be better */
        return 0;
}

static int
setmlme_assoc_adhoc(struct ieee80211vap *vap,
        const uint8_t mac[IEEE80211_ADDR_LEN], int ssid_len,
        const uint8_t ssid[IEEE80211_NWID_LEN])
{
        struct ieee80211_scan_req *sr;
        int error;

        KASSERT(vap->iv_opmode == IEEE80211_M_IBSS ||
            vap->iv_opmode == IEEE80211_M_AHDEMO,
            ("expected opmode IBSS or AHDEMO not %s",
            ieee80211_opmode_name[vap->iv_opmode]));

        if (ssid_len == 0 || ssid_len > IEEE80211_NWID_LEN)
                return EINVAL;

        sr = IEEE80211_MALLOC(sizeof(*sr), M_TEMP,
             IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (sr == NULL)
                return ENOMEM;

        /* NB: IEEE80211_IOC_SSID call missing for ap_scan=2. */
        memset(vap->iv_des_ssid[0].ssid, 0, IEEE80211_NWID_LEN);
        vap->iv_des_ssid[0].len = ssid_len;
        memcpy(vap->iv_des_ssid[0].ssid, ssid, ssid_len);
        vap->iv_des_nssid = 1;

        sr->sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE;
        sr->sr_duration = IEEE80211_IOC_SCAN_FOREVER;
        memcpy(sr->sr_ssid[0].ssid, ssid, ssid_len);
        sr->sr_ssid[0].len = ssid_len;
        sr->sr_nssid = 1;

        error = ieee80211_scanreq(vap, sr);

        IEEE80211_FREE(sr, M_TEMP);
        return error;
}

static int
ieee80211_ioctl_setmlme(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211req_mlme mlme;
        int error;

        if (ireq->i_len != sizeof(mlme))
                return EINVAL;
        error = copyin(ireq->i_data, &mlme, sizeof(mlme));
        if (error)
                return error;
        if  (vap->iv_opmode == IEEE80211_M_STA &&
            mlme.im_op == IEEE80211_MLME_ASSOC)
                return setmlme_assoc_sta(vap, mlme.im_macaddr,
                    vap->iv_des_ssid[0].len, vap->iv_des_ssid[0].ssid);
        else if ((vap->iv_opmode == IEEE80211_M_IBSS || 
            vap->iv_opmode == IEEE80211_M_AHDEMO) && 
            mlme.im_op == IEEE80211_MLME_ASSOC)
                return setmlme_assoc_adhoc(vap, mlme.im_macaddr,
                    mlme.im_ssid_len, mlme.im_ssid);
        else
                return setmlme_common(vap, mlme.im_op,
                    mlme.im_macaddr, mlme.im_reason);
}

static int
ieee80211_ioctl_macmac(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        uint8_t mac[IEEE80211_ADDR_LEN];
        const struct ieee80211_aclator *acl = vap->iv_acl;
        int error;

        if (ireq->i_len != sizeof(mac))
                return EINVAL;
        error = copyin(ireq->i_data, mac, ireq->i_len);
        if (error)
                return error;
        if (acl == NULL) {
                acl = ieee80211_aclator_get("mac");
                if (acl == NULL || !acl->iac_attach(vap))
                        return EINVAL;
                vap->iv_acl = acl;
        }
        if (ireq->i_type == IEEE80211_IOC_ADDMAC)
                acl->iac_add(vap, mac);
        else
                acl->iac_remove(vap, mac);
        return 0;
}

static int
ieee80211_ioctl_setmaccmd(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        const struct ieee80211_aclator *acl = vap->iv_acl;

        switch (ireq->i_val) {
        case IEEE80211_MACCMD_POLICY_OPEN:
        case IEEE80211_MACCMD_POLICY_ALLOW:
        case IEEE80211_MACCMD_POLICY_DENY:
        case IEEE80211_MACCMD_POLICY_RADIUS:
                if (acl == NULL) {
                        acl = ieee80211_aclator_get("mac");
                        if (acl == NULL || !acl->iac_attach(vap))
                                return EINVAL;
                        vap->iv_acl = acl;
                }
                acl->iac_setpolicy(vap, ireq->i_val);
                break;
        case IEEE80211_MACCMD_FLUSH:
                if (acl != NULL)
                        acl->iac_flush(vap);
                /* NB: silently ignore when not in use */
                break;
        case IEEE80211_MACCMD_DETACH:
                if (acl != NULL) {
                        vap->iv_acl = NULL;
                        acl->iac_detach(vap);
                }
                break;
        default:
                if (acl == NULL)
                        return EINVAL;
                else
                        return acl->iac_setioctl(vap, ireq);
        }
        return 0;
}

static int
ieee80211_ioctl_setchanlist(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        uint8_t *chanlist, *list;
        int i, nchan, maxchan, error;

        if (ireq->i_len > sizeof(ic->ic_chan_active))
                ireq->i_len = sizeof(ic->ic_chan_active);
        list = IEEE80211_MALLOC(ireq->i_len + IEEE80211_CHAN_BYTES, M_TEMP,
            IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (list == NULL)
                return ENOMEM;
        error = copyin(ireq->i_data, list, ireq->i_len);
        if (error) {
                IEEE80211_FREE(list, M_TEMP);
                return error;
        }
        nchan = 0;
        chanlist = list + ireq->i_len;          /* NB: zero'd already */
        maxchan = ireq->i_len * NBBY;
        for (i = 0; i < ic->ic_nchans; i++) {
                const struct ieee80211_channel *c = &ic->ic_channels[i];
                /*
                 * Calculate the intersection of the user list and the
                 * available channels so users can do things like specify
                 * 1-255 to get all available channels.
                 */
                if (c->ic_ieee < maxchan && isset(list, c->ic_ieee)) {
                        setbit(chanlist, c->ic_ieee);
                        nchan++;
                }
        }
        if (nchan == 0) {
                IEEE80211_FREE(list, M_TEMP);
                return EINVAL;
        }
        if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&    /* XXX */
            isclr(chanlist, ic->ic_bsschan->ic_ieee))
                ic->ic_bsschan = IEEE80211_CHAN_ANYC;
        memcpy(ic->ic_chan_active, chanlist, IEEE80211_CHAN_BYTES);
        ieee80211_scan_flush(vap);
        IEEE80211_FREE(list, M_TEMP);
        return ENETRESET;
}

static int
ieee80211_ioctl_setstastats(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_node *ni;
        uint8_t macaddr[IEEE80211_ADDR_LEN];
        int error;

        /*
         * NB: we could copyin ieee80211req_sta_stats so apps
         *     could make selective changes but that's overkill;
         *     just clear all stats for now.
         */
        if (ireq->i_len < IEEE80211_ADDR_LEN)
                return EINVAL;
        error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
        if (error != 0)
                return error;
        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, macaddr);
        if (ni == NULL)
                return ENOENT;
        /* XXX require ni_vap == vap? */
        memset(&ni->ni_stats, 0, sizeof(ni->ni_stats));
        ieee80211_free_node(ni);
        return 0;
}

static int
ieee80211_ioctl_setstatxpow(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_node *ni;
        struct ieee80211req_sta_txpow txpow;
        int error;

        if (ireq->i_len != sizeof(txpow))
                return EINVAL;
        error = copyin(ireq->i_data, &txpow, sizeof(txpow));
        if (error != 0)
                return error;
        ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap, txpow.it_macaddr);
        if (ni == NULL)
                return ENOENT;
        ni->ni_txpower = txpow.it_txpow;
        ieee80211_free_node(ni);
        return error;
}

static int
ieee80211_ioctl_setwmeparam(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_wme_state *wme = &ic->ic_wme;
        struct wmeParams *wmep, *chanp;
        int isbss, ac, aggrmode;

        if ((ic->ic_caps & IEEE80211_C_WME) == 0)
                return EOPNOTSUPP;

        isbss = (ireq->i_len & IEEE80211_WMEPARAM_BSS);
        ac = (ireq->i_len & IEEE80211_WMEPARAM_VAL);
        aggrmode = (wme->wme_flags & WME_F_AGGRMODE);
        if (ac >= WME_NUM_AC)
                ac = WME_AC_BE;
        if (isbss) {
                chanp = &wme->wme_bssChanParams.cap_wmeParams[ac];
                wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[ac];
        } else {
                chanp = &wme->wme_chanParams.cap_wmeParams[ac];
                wmep = &wme->wme_wmeChanParams.cap_wmeParams[ac];
        }
        switch (ireq->i_type) {
        case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
                wmep->wmep_logcwmin = ireq->i_val;
                if (!isbss || !aggrmode)
                        chanp->wmep_logcwmin = ireq->i_val;
                break;
        case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
                wmep->wmep_logcwmax = ireq->i_val;
                if (!isbss || !aggrmode)
                        chanp->wmep_logcwmax = ireq->i_val;
                break;
        case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
                wmep->wmep_aifsn = ireq->i_val;
                if (!isbss || !aggrmode)
                        chanp->wmep_aifsn = ireq->i_val;
                break;
        case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
                wmep->wmep_txopLimit = ireq->i_val;
                if (!isbss || !aggrmode)
                        chanp->wmep_txopLimit = ireq->i_val;
                break;
        case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
                wmep->wmep_acm = ireq->i_val;
                if (!aggrmode)
                        chanp->wmep_acm = ireq->i_val;
                break;
        case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (!bss only)*/
                wmep->wmep_noackPolicy = chanp->wmep_noackPolicy =
                        (ireq->i_val) == 0;
                break;
        }
        ieee80211_wme_updateparams(vap);
        return 0;
}

static int
find11gchannel(struct ieee80211com *ic, int start, int freq)
{
        const struct ieee80211_channel *c;
        int i;

        for (i = start+1; i < ic->ic_nchans; i++) {
                c = &ic->ic_channels[i];
                if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
                        return 1;
        }
        /* NB: should not be needed but in case things are mis-sorted */
        for (i = 0; i < start; i++) {
                c = &ic->ic_channels[i];
                if (c->ic_freq == freq && IEEE80211_IS_CHAN_ANYG(c))
                        return 1;
        }
        return 0;
}

static struct ieee80211_channel *
findchannel(struct ieee80211com *ic, int ieee, int mode)
{
        static const u_int chanflags[IEEE80211_MODE_MAX] = {
            [IEEE80211_MODE_AUTO]       = 0,
            [IEEE80211_MODE_11A]        = IEEE80211_CHAN_A,
            [IEEE80211_MODE_11B]        = IEEE80211_CHAN_B,
            [IEEE80211_MODE_11G]        = IEEE80211_CHAN_G,
            [IEEE80211_MODE_FH]         = IEEE80211_CHAN_FHSS,
            [IEEE80211_MODE_TURBO_A]    = IEEE80211_CHAN_108A,
            [IEEE80211_MODE_TURBO_G]    = IEEE80211_CHAN_108G,
            [IEEE80211_MODE_STURBO_A]   = IEEE80211_CHAN_STURBO,
            [IEEE80211_MODE_HALF]       = IEEE80211_CHAN_HALF,
            [IEEE80211_MODE_QUARTER]    = IEEE80211_CHAN_QUARTER,
            /* NB: handled specially below */
            [IEEE80211_MODE_11NA]       = IEEE80211_CHAN_A,
            [IEEE80211_MODE_11NG]       = IEEE80211_CHAN_G,
            [IEEE80211_MODE_VHT_5GHZ]   = IEEE80211_CHAN_A,
            [IEEE80211_MODE_VHT_2GHZ]   = IEEE80211_CHAN_G,
        };
        u_int modeflags;
        int i;

        modeflags = chanflags[mode];
        for (i = 0; i < ic->ic_nchans; i++) {
                struct ieee80211_channel *c = &ic->ic_channels[i];

                if (c->ic_ieee != ieee)
                        continue;
                if (mode == IEEE80211_MODE_AUTO) {
                        /* ignore turbo channels for autoselect */
                        if (IEEE80211_IS_CHAN_TURBO(c))
                                continue;
                        /*
                         * XXX special-case 11b/g channels so we
                         *     always select the g channel if both
                         *     are present.
                         * XXX prefer HT to non-HT?
                         */
                        if (!IEEE80211_IS_CHAN_B(c) ||
                            !find11gchannel(ic, i, c->ic_freq))
                                return c;
                } else {
                        /* must check VHT specifically */
                        if ((mode == IEEE80211_MODE_VHT_5GHZ ||
                            mode == IEEE80211_MODE_VHT_2GHZ) &&
                            !IEEE80211_IS_CHAN_VHT(c))
                                continue;

                        /*
                         * Must check HT specially - only match on HT,
                         * not HT+VHT channels
                         */
                        if ((mode == IEEE80211_MODE_11NA ||
                            mode == IEEE80211_MODE_11NG) &&
                            !IEEE80211_IS_CHAN_HT(c))
                                continue;

                        if ((mode == IEEE80211_MODE_11NA ||
                            mode == IEEE80211_MODE_11NG) &&
                            IEEE80211_IS_CHAN_VHT(c))
                                continue;

                        /* Check that the modeflags above match */
                        if ((c->ic_flags & modeflags) == modeflags)
                                return c;
                }
        }
        return NULL;
}

/*
 * Check the specified against any desired mode (aka netband).
 * This is only used (presently) when operating in hostap mode
 * to enforce consistency.
 */
static int
check_mode_consistency(const struct ieee80211_channel *c, int mode)
{
        KASSERT(c != IEEE80211_CHAN_ANYC, ("oops, no channel"));

        switch (mode) {
        case IEEE80211_MODE_11B:
                return (IEEE80211_IS_CHAN_B(c));
        case IEEE80211_MODE_11G:
                return (IEEE80211_IS_CHAN_ANYG(c) && !IEEE80211_IS_CHAN_HT(c));
        case IEEE80211_MODE_11A:
                return (IEEE80211_IS_CHAN_A(c) && !IEEE80211_IS_CHAN_HT(c));
        case IEEE80211_MODE_STURBO_A:
                return (IEEE80211_IS_CHAN_STURBO(c));
        case IEEE80211_MODE_11NA:
                return (IEEE80211_IS_CHAN_HTA(c));
        case IEEE80211_MODE_11NG:
                return (IEEE80211_IS_CHAN_HTG(c));
        }
        return 1;

}

/*
 * Common code to set the current channel.  If the device
 * is up and running this may result in an immediate channel
 * change or a kick of the state machine.
 */
static int
setcurchan(struct ieee80211vap *vap, struct ieee80211_channel *c)
{
        struct ieee80211com *ic = vap->iv_ic;
        int error;

        if (c != IEEE80211_CHAN_ANYC) {
                if (IEEE80211_IS_CHAN_RADAR(c))
                        return EBUSY;   /* XXX better code? */
                if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
                        if (IEEE80211_IS_CHAN_NOHOSTAP(c))
                                return EINVAL;
                        if (!check_mode_consistency(c, vap->iv_des_mode))
                                return EINVAL;
                } else if (vap->iv_opmode == IEEE80211_M_IBSS) {
                        if (IEEE80211_IS_CHAN_NOADHOC(c))
                                return EINVAL;
                }
                if ((vap->iv_state == IEEE80211_S_RUN || vap->iv_state == IEEE80211_S_SLEEP) &&
                    vap->iv_bss->ni_chan == c)
                        return 0;       /* NB: nothing to do */
        }
        vap->iv_des_chan = c;

        error = 0;
        if (vap->iv_opmode == IEEE80211_M_MONITOR &&
            vap->iv_des_chan != IEEE80211_CHAN_ANYC) {
                /*
                 * Monitor mode can switch directly.
                 */
                if (IFNET_IS_UP_RUNNING(vap->iv_ifp)) {
                        /* XXX need state machine for other vap's to follow */
                        ieee80211_setcurchan(ic, vap->iv_des_chan);
                        vap->iv_bss->ni_chan = ic->ic_curchan;
                } else {
                        ic->ic_curchan = vap->iv_des_chan;
                        ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
                }
        } else {
                /*
                 * Need to go through the state machine in case we
                 * need to reassociate or the like.  The state machine
                 * will pickup the desired channel and avoid scanning.
                 */
                if (IS_UP_AUTO(vap))
                        ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
                else if (vap->iv_des_chan != IEEE80211_CHAN_ANYC) {
                        /*
                         * When not up+running and a real channel has
                         * been specified fix the current channel so
                         * there is immediate feedback; e.g. via ifconfig.
                         */
                        ic->ic_curchan = vap->iv_des_chan;
                        ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
                }
        }
        return error;
}

/*
 * Old api for setting the current channel; this is
 * deprecated because channel numbers are ambiguous.
 */
static int
ieee80211_ioctl_setchannel(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_channel *c;

        /* XXX 0xffff overflows 16-bit signed */
        if (ireq->i_val == 0 ||
            ireq->i_val == (int16_t) IEEE80211_CHAN_ANY) {
                c = IEEE80211_CHAN_ANYC;
        } else {
                struct ieee80211_channel *c2;

                c = findchannel(ic, ireq->i_val, vap->iv_des_mode);
                if (c == NULL) {
                        c = findchannel(ic, ireq->i_val,
                                IEEE80211_MODE_AUTO);
                        if (c == NULL)
                                return EINVAL;
                }

                /*
                 * Fine tune channel selection based on desired mode:
                 *   if 11b is requested, find the 11b version of any
                 *      11g channel returned,
                 *   if static turbo, find the turbo version of any
                 *      11a channel return,
                 *   if 11na is requested, find the ht version of any
                 *      11a channel returned,
                 *   if 11ng is requested, find the ht version of any
                 *      11g channel returned,
                 *   if 11ac is requested, find the 11ac version
                 *      of any 11a/11na channel returned,
                 *   (TBD) 11acg (2GHz VHT)
                 *   otherwise we should be ok with what we've got.
                 */
                switch (vap->iv_des_mode) {
                case IEEE80211_MODE_11B:
                        if (IEEE80211_IS_CHAN_ANYG(c)) {
                                c2 = findchannel(ic, ireq->i_val,
                                        IEEE80211_MODE_11B);
                                /* NB: should not happen, =>'s 11g w/o 11b */
                                if (c2 != NULL)
                                        c = c2;
                        }
                        break;
                case IEEE80211_MODE_TURBO_A:
                        if (IEEE80211_IS_CHAN_A(c)) {
                                c2 = findchannel(ic, ireq->i_val,
                                        IEEE80211_MODE_TURBO_A);
                                if (c2 != NULL)
                                        c = c2;
                        }
                        break;
                case IEEE80211_MODE_11NA:
                        if (IEEE80211_IS_CHAN_A(c)) {
                                c2 = findchannel(ic, ireq->i_val,
                                        IEEE80211_MODE_11NA);
                                if (c2 != NULL)
                                        c = c2;
                        }
                        break;
                case IEEE80211_MODE_11NG:
                        if (IEEE80211_IS_CHAN_ANYG(c)) {
                                c2 = findchannel(ic, ireq->i_val,
                                        IEEE80211_MODE_11NG);
                                if (c2 != NULL)
                                        c = c2;
                        }
                        break;
                case IEEE80211_MODE_VHT_2GHZ:
                        net80211_printf("%s: TBD\n", __func__);
                        break;
                case IEEE80211_MODE_VHT_5GHZ:
                        if (IEEE80211_IS_CHAN_A(c)) {
                                c2 = findchannel(ic, ireq->i_val,
                                        IEEE80211_MODE_VHT_5GHZ);
                                if (c2 != NULL)
                                        c = c2;
                        }
                        break;
                default:                /* NB: no static turboG */
                        break;
                }
        }
        return setcurchan(vap, c);
}

/*
 * New/current api for setting the current channel; a complete
 * channel description is provide so there is no ambiguity in
 * identifying the channel.
 */
static int
ieee80211_ioctl_setcurchan(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_channel chan, *c;
        int error;

        if (ireq->i_len != sizeof(chan))
                return EINVAL;
        error = copyin(ireq->i_data, &chan, sizeof(chan));
        if (error != 0)
                return error;

        /* XXX 0xffff overflows 16-bit signed */
        if (chan.ic_freq == 0 || chan.ic_freq == IEEE80211_CHAN_ANY) {
                c = IEEE80211_CHAN_ANYC;
        } else {
                c = ieee80211_find_channel(ic, chan.ic_freq, chan.ic_flags);
                if (c == NULL)
                        return EINVAL;
        }
        return setcurchan(vap, c);
}

static int
ieee80211_ioctl_setregdomain(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211_regdomain_req *reg;
        int nchans, error;

        nchans = 1 + ((ireq->i_len - sizeof(struct ieee80211_regdomain_req)) /
            sizeof(struct ieee80211_channel));
        if (!(1 <= nchans && nchans <= IEEE80211_CHAN_MAX)) {
                IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL,
                    "%s: bad # chans, i_len %d nchans %d\n", __func__,
                    ireq->i_len, nchans);
                return EINVAL;
        }
        reg = (struct ieee80211_regdomain_req *)
            IEEE80211_MALLOC(IEEE80211_REGDOMAIN_SIZE(nchans), M_TEMP,
              IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (reg == NULL) {
                IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL,
                    "%s: no memory, nchans %d\n", __func__, nchans);
                return ENOMEM;
        }
        error = copyin(ireq->i_data, reg, IEEE80211_REGDOMAIN_SIZE(nchans));
        if (error == 0) {
                /* NB: validate inline channel count against storage size */
                if (reg->chaninfo.ic_nchans != nchans) {
                        IEEE80211_DPRINTF(vap, IEEE80211_MSG_IOCTL,
                            "%s: chan cnt mismatch, %d != %d\n", __func__,
                                reg->chaninfo.ic_nchans, nchans);
                        error = EINVAL;
                } else
                        error = ieee80211_setregdomain(vap, reg);
        }
        IEEE80211_FREE(reg, M_TEMP);

        return (error == 0 ? ENETRESET : error);
}

static int
checkrate(const struct ieee80211_rateset *rs, int rate)
{
        int i;

        if (rate == IEEE80211_FIXED_RATE_NONE)
                return 1;
        for (i = 0; i < rs->rs_nrates; i++)
                if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate)
                        return 1;
        return 0;
}

static int
checkmcs(const struct ieee80211_htrateset *rs, int mcs)
{
        int rate_val = IEEE80211_RV(mcs);
        int i;

        if (mcs == IEEE80211_FIXED_RATE_NONE)
                return 1;
        if ((mcs & IEEE80211_RATE_MCS) == 0)    /* MCS always have 0x80 set */
                return 0;
        for (i = 0; i < rs->rs_nrates; i++)
                if (IEEE80211_RV(rs->rs_rates[i]) == rate_val)
                        return 1;
        return 0;
}

static int
ieee80211_ioctl_setroam(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_roamparams_req *parms;
        struct ieee80211_roamparam *src, *dst;
        const struct ieee80211_htrateset *rs_ht;
        const struct ieee80211_rateset *rs;
        int changed, error, mode, is11n, nmodes;

        if (ireq->i_len != sizeof(vap->iv_roamparms))
                return EINVAL;

        parms = IEEE80211_MALLOC(sizeof(*parms), M_TEMP,
            IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (parms == NULL)
                return ENOMEM;

        error = copyin(ireq->i_data, parms, ireq->i_len);
        if (error != 0)
                goto fail;

        changed = 0;
        nmodes = IEEE80211_MODE_MAX;

        /* validate parameters and check if anything changed */
        for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) {
                if (isclr(ic->ic_modecaps, mode))
                        continue;
                src = &parms->params[mode];
                dst = &vap->iv_roamparms[mode];
                rs = &ic->ic_sup_rates[mode];   /* NB: 11n maps to legacy */
                rs_ht = &ic->ic_sup_htrates;
                is11n = (mode == IEEE80211_MODE_11NA ||
                         mode == IEEE80211_MODE_11NG);
                /* XXX TODO: 11ac */
                if (src->rate != dst->rate) {
                        if (!checkrate(rs, src->rate) &&
                            (!is11n || !checkmcs(rs_ht, src->rate))) {
                                error = EINVAL;
                                goto fail;
                        }
                        changed++;
                }
                if (src->rssi != dst->rssi)
                        changed++;
        }
        if (changed) {
                /*
                 * Copy new parameters in place and notify the
                 * driver so it can push state to the device.
                 */
                /* XXX locking? */
                for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) {
                        if (isset(ic->ic_modecaps, mode))
                                vap->iv_roamparms[mode] = parms->params[mode];
                }

                if (vap->iv_roaming == IEEE80211_ROAMING_DEVICE)
                        error = ERESTART;
        }

fail:   IEEE80211_FREE(parms, M_TEMP);
        return error;
}

static int
ieee80211_ioctl_settxparams(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_txparams_req parms;    /* XXX stack use? */
        struct ieee80211_txparam *src, *dst;
        const struct ieee80211_htrateset *rs_ht;
        const struct ieee80211_rateset *rs;
        int error, mode, changed, is11n, nmodes;

        /* NB: accept short requests for backwards compat */
        if (ireq->i_len > sizeof(parms))
                return EINVAL;
        error = copyin(ireq->i_data, &parms, ireq->i_len);
        if (error != 0)
                return error;
        nmodes = ireq->i_len / sizeof(struct ieee80211_txparam);
        changed = 0;
        /* validate parameters and check if anything changed */
        for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) {
                if (isclr(ic->ic_modecaps, mode))
                        continue;
                src = &parms.params[mode];
                dst = &vap->iv_txparms[mode];
                rs = &ic->ic_sup_rates[mode];   /* NB: 11n maps to legacy */
                rs_ht = &ic->ic_sup_htrates;
                is11n = (mode == IEEE80211_MODE_11NA ||
                         mode == IEEE80211_MODE_11NG);
                if (src->ucastrate != dst->ucastrate) {
                        if (!checkrate(rs, src->ucastrate) &&
                            (!is11n || !checkmcs(rs_ht, src->ucastrate)))
                                return EINVAL;
                        changed++;
                }
                if (src->mcastrate != dst->mcastrate) {
                        if (!checkrate(rs, src->mcastrate) &&
                            (!is11n || !checkmcs(rs_ht, src->mcastrate)))
                                return EINVAL;
                        changed++;
                }
                if (src->mgmtrate != dst->mgmtrate) {
                        if (!checkrate(rs, src->mgmtrate) &&
                            (!is11n || !checkmcs(rs_ht, src->mgmtrate)))
                                return EINVAL;
                        changed++;
                }
                if (src->maxretry != dst->maxretry)     /* NB: no bounds */
                        changed++;
        }
        if (changed) {
                /*
                 * Copy new parameters in place and notify the
                 * driver so it can push state to the device.
                 */
                for (mode = IEEE80211_MODE_11A; mode < nmodes; mode++) {
                        if (isset(ic->ic_modecaps, mode))
                                vap->iv_txparms[mode] = parms.params[mode];
                }
                /* XXX could be more intelligent,
                   e.g. don't reset if setting not being used */
                return ENETRESET;
        }
        return 0;
}

/*
 * Application Information Element support.
 */
static int
setappie(struct ieee80211_appie **aie, const struct ieee80211req *ireq)
{
        struct ieee80211_appie *app = *aie;
        struct ieee80211_appie *napp;
        int error;

        if (ireq->i_len == 0) {         /* delete any existing ie */
                if (app != NULL) {
                        *aie = NULL;    /* XXX racey */
                        IEEE80211_FREE(app, M_80211_NODE_IE);
                }
                return 0;
        }
        if (!(2 <= ireq->i_len && ireq->i_len <= IEEE80211_MAX_APPIE))
                return EINVAL;
        /*
         * Allocate a new appie structure and copy in the user data.
         * When done swap in the new structure.  Note that we do not
         * guard against users holding a ref to the old structure;
         * this must be handled outside this code.
         *
         * XXX bad bad bad
         */
        napp = (struct ieee80211_appie *) IEEE80211_MALLOC(
            sizeof(struct ieee80211_appie) + ireq->i_len, M_80211_NODE_IE,
            IEEE80211_M_NOWAIT);
        if (napp == NULL)
                return ENOMEM;
        /* XXX holding ic lock */
        error = copyin(ireq->i_data, napp->ie_data, ireq->i_len);
        if (error) {
                IEEE80211_FREE(napp, M_80211_NODE_IE);
                return error;
        }
        napp->ie_len = ireq->i_len;
        *aie = napp;
        if (app != NULL)
                IEEE80211_FREE(app, M_80211_NODE_IE);
        return 0;
}

static void
setwparsnie(struct ieee80211vap *vap, uint8_t *ie, int space)
{
        /* validate data is present as best we can */
        if (space == 0 || 2+ie[1] > space)
                return;
        if (ie[0] == IEEE80211_ELEMID_VENDOR)
                vap->iv_wpa_ie = ie;
        else if (ie[0] == IEEE80211_ELEMID_RSN)
                vap->iv_rsn_ie = ie;
}

static int
ieee80211_ioctl_setappie_locked(struct ieee80211vap *vap,
        const struct ieee80211req *ireq, int fc0)
{
        int error;

        IEEE80211_LOCK_ASSERT(vap->iv_ic);

        switch (fc0 & IEEE80211_FC0_SUBTYPE_MASK) {
        case IEEE80211_FC0_SUBTYPE_BEACON:
                if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
                    vap->iv_opmode != IEEE80211_M_IBSS) {
                        error = EINVAL;
                        break;
                }
                error = setappie(&vap->iv_appie_beacon, ireq);
                if (error == 0)
                        ieee80211_beacon_notify(vap, IEEE80211_BEACON_APPIE);
                break;
        case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
                error = setappie(&vap->iv_appie_proberesp, ireq);
                break;
        case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
                if (vap->iv_opmode == IEEE80211_M_HOSTAP)
                        error = setappie(&vap->iv_appie_assocresp, ireq);
                else
                        error = EINVAL;
                break;
        case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
                error = setappie(&vap->iv_appie_probereq, ireq);
                break;
        case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
                if (vap->iv_opmode == IEEE80211_M_STA)
                        error = setappie(&vap->iv_appie_assocreq, ireq);
                else
                        error = EINVAL;
                break;
        case (IEEE80211_APPIE_WPA & IEEE80211_FC0_SUBTYPE_MASK):
                error = setappie(&vap->iv_appie_wpa, ireq);
                if (error == 0) {
                        /*
                         * Must split single blob of data into separate
                         * WPA and RSN ie's because they go in different
                         * locations in the mgt frames.
                         * XXX use IEEE80211_IOC_WPA2 so user code does split
                         */
                        vap->iv_wpa_ie = NULL;
                        vap->iv_rsn_ie = NULL;
                        if (vap->iv_appie_wpa != NULL) {
                                struct ieee80211_appie *appie =
                                    vap->iv_appie_wpa;
                                uint8_t *data = appie->ie_data;

                                /* XXX ie length validate is painful, cheat */
                                setwparsnie(vap, data, appie->ie_len);
                                setwparsnie(vap, data + 2 + data[1],
                                    appie->ie_len - (2 + data[1]));
                        }
                        if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
                            vap->iv_opmode == IEEE80211_M_IBSS) {
                                /*
                                 * Must rebuild beacon frame as the update
                                 * mechanism doesn't handle WPA/RSN ie's.
                                 * Could extend it but it doesn't normally
                                 * change; this is just to deal with hostapd
                                 * plumbing the ie after the interface is up.
                                 */
                                error = ENETRESET;
                        }
                }
                break;
        default:
                error = EINVAL;
                break;
        }
        return error;
}

static int
ieee80211_ioctl_setappie(struct ieee80211vap *vap,
        const struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        int error;
        uint8_t fc0;

        fc0 = ireq->i_val & 0xff;
        if ((fc0 & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
                return EINVAL;
        /* NB: could check iv_opmode and reject but hardly worth the effort */
        IEEE80211_LOCK(ic);
        error = ieee80211_ioctl_setappie_locked(vap, ireq, fc0);
        IEEE80211_UNLOCK(ic);
        return error;
}

static int
ieee80211_ioctl_chanswitch(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        struct ieee80211_chanswitch_req csr;
        struct ieee80211_channel *c;
        int error;

        if (ireq->i_len != sizeof(csr))
                return EINVAL;
        error = copyin(ireq->i_data, &csr, sizeof(csr));
        if (error != 0)
                return error;
        /* XXX adhoc mode not supported */
        if (vap->iv_opmode != IEEE80211_M_HOSTAP ||
            (vap->iv_flags & IEEE80211_F_DOTH) == 0)
                return EOPNOTSUPP;
        c = ieee80211_find_channel(ic,
            csr.csa_chan.ic_freq, csr.csa_chan.ic_flags);
        if (c == NULL)
                return ENOENT;
        IEEE80211_LOCK(ic);
        if ((ic->ic_flags & IEEE80211_F_CSAPENDING) == 0)
                ieee80211_csa_startswitch(ic, c, csr.csa_mode, csr.csa_count);
        else if (csr.csa_count == 0)
                ieee80211_csa_cancelswitch(ic);
        else
                error = EBUSY;
        IEEE80211_UNLOCK(ic);
        return error;
}

static int
ieee80211_scanreq(struct ieee80211vap *vap, struct ieee80211_scan_req *sr)
{
#define IEEE80211_IOC_SCAN_FLAGS \
        (IEEE80211_IOC_SCAN_NOPICK | IEEE80211_IOC_SCAN_ACTIVE | \
         IEEE80211_IOC_SCAN_PICK1ST | IEEE80211_IOC_SCAN_BGSCAN | \
         IEEE80211_IOC_SCAN_ONCE | IEEE80211_IOC_SCAN_NOBCAST | \
         IEEE80211_IOC_SCAN_NOJOIN | IEEE80211_IOC_SCAN_FLUSH | \
         IEEE80211_IOC_SCAN_CHECK)
        struct ieee80211com *ic = vap->iv_ic;
        int error, i;

        /* convert duration */
        if (sr->sr_duration == IEEE80211_IOC_SCAN_FOREVER)
                sr->sr_duration = IEEE80211_SCAN_FOREVER;
        else {
                if (sr->sr_duration < IEEE80211_IOC_SCAN_DURATION_MIN ||
                    sr->sr_duration > IEEE80211_IOC_SCAN_DURATION_MAX)
                        return EINVAL;
                sr->sr_duration = msecs_to_ticks(sr->sr_duration);
        }
        /* convert min/max channel dwell */
        if (sr->sr_mindwell != 0)
                sr->sr_mindwell = msecs_to_ticks(sr->sr_mindwell);
        if (sr->sr_maxdwell != 0)
                sr->sr_maxdwell = msecs_to_ticks(sr->sr_maxdwell);
        /* NB: silently reduce ssid count to what is supported */
        if (sr->sr_nssid > IEEE80211_SCAN_MAX_SSID)
                sr->sr_nssid = IEEE80211_SCAN_MAX_SSID;
        for (i = 0; i < sr->sr_nssid; i++)
                if (sr->sr_ssid[i].len > IEEE80211_NWID_LEN)
                        return EINVAL;
        /* cleanse flags just in case, could reject if invalid flags */
        sr->sr_flags &= IEEE80211_IOC_SCAN_FLAGS;

        /*
         * If the driver does not support BGSCAN, or BGSCAN is disabled
         * do not allow the IEEE80211_SCAN_BGSCAN flag to go through
         * to avoid accidentally enabling BGSCANs.
         * Also if not STA mode [see ieee80211_vap_setup()].
         */
        if ((vap->iv_caps & IEEE80211_C_BGSCAN) == 0 ||
            (vap->iv_flags & IEEE80211_F_BGSCAN) == 0 ||
            vap->iv_opmode != IEEE80211_M_STA)
                sr->sr_flags &= ~IEEE80211_IOC_SCAN_BGSCAN;

        /*
         * Add an implicit NOPICK if the vap is not marked UP.  This
         * allows applications to scan without joining a bss (or picking
         * a channel and setting up a bss) and without forcing manual
         * roaming mode--you just need to mark the parent device UP.
         */
        if ((vap->iv_ifp->if_flags & IFF_UP) == 0)
                sr->sr_flags |= IEEE80211_IOC_SCAN_NOPICK;

        IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
            "%s: vap %p iv_state %#x (%s) flags 0x%x%s "
            "duration 0x%x mindwell %u maxdwell %u nssid %d\n",
            __func__, vap, vap->iv_state, ieee80211_state_name[vap->iv_state],
            sr->sr_flags,
            (vap->iv_ifp->if_flags & IFF_UP) == 0 ? " (!IFF_UP)" : "",
            sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell, sr->sr_nssid);
        /*
         * If we are in INIT state then the driver has never had a chance
         * to setup hardware state to do a scan; we must use the state
         * machine to get us up to the SCAN state but once we reach SCAN
         * state we then want to use the supplied params.  Stash the
         * parameters in the vap and mark IEEE80211_FEXT_SCANREQ; the
         * state machines will recognize this and use the stashed params
         * to issue the scan request.
         *
         * Otherwise just invoke the scan machinery directly.
         */
        IEEE80211_LOCK(ic);
        if (ic->ic_nrunning == 0) {
                IEEE80211_UNLOCK(ic);
                return ENXIO;
        }

        if (vap->iv_state == IEEE80211_S_INIT) {
                /* NB: clobbers previous settings */
                vap->iv_scanreq_flags = sr->sr_flags;
                vap->iv_scanreq_duration = sr->sr_duration;
                vap->iv_scanreq_nssid = sr->sr_nssid;
                for (i = 0; i < sr->sr_nssid; i++) {
                        vap->iv_scanreq_ssid[i].len = sr->sr_ssid[i].len;
                        memcpy(vap->iv_scanreq_ssid[i].ssid,
                            sr->sr_ssid[i].ssid, sr->sr_ssid[i].len);
                }
                vap->iv_flags_ext |= IEEE80211_FEXT_SCANREQ;
                IEEE80211_UNLOCK(ic);
                ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
        } else {
                vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
                IEEE80211_UNLOCK(ic);
                if (sr->sr_flags & IEEE80211_IOC_SCAN_CHECK) {
                        error = ieee80211_check_scan(vap, sr->sr_flags,
                            sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell,
                            sr->sr_nssid,
                            /* NB: cheat, we assume structures are compatible */
                            (const struct ieee80211_scan_ssid *) &sr->sr_ssid[0]);
                } else {
                        error = ieee80211_start_scan(vap, sr->sr_flags,
                            sr->sr_duration, sr->sr_mindwell, sr->sr_maxdwell,
                            sr->sr_nssid,
                            /* NB: cheat, we assume structures are compatible */
                            (const struct ieee80211_scan_ssid *) &sr->sr_ssid[0]);
                }
                if (error == 0)
                        return EINPROGRESS;
        }
        return 0;
#undef IEEE80211_IOC_SCAN_FLAGS
}

static int
ieee80211_ioctl_scanreq(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_scan_req *sr;
        int error;

        if (ireq->i_len != sizeof(*sr))
                return EINVAL;
        sr = IEEE80211_MALLOC(sizeof(*sr), M_TEMP,
             IEEE80211_M_NOWAIT | IEEE80211_M_ZERO);
        if (sr == NULL)
                return ENOMEM;
        error = copyin(ireq->i_data, sr, sizeof(*sr));
        if (error != 0)
                goto bad;
        error = ieee80211_scanreq(vap, sr);
bad:
        IEEE80211_FREE(sr, M_TEMP);
        return error;
}

static int
ieee80211_ioctl_setstavlan(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        struct ieee80211_node *ni;
        struct ieee80211req_sta_vlan vlan;
        int error;

        if (ireq->i_len != sizeof(vlan))
                return EINVAL;
        error = copyin(ireq->i_data, &vlan, sizeof(vlan));
        if (error != 0)
                return error;
        if (!IEEE80211_ADDR_EQ(vlan.sv_macaddr, zerobssid)) {
                ni = ieee80211_find_vap_node(&vap->iv_ic->ic_sta, vap,
                    vlan.sv_macaddr);
                if (ni == NULL)
                        return ENOENT;
        } else
                ni = ieee80211_ref_node(vap->iv_bss);
        ni->ni_vlan = vlan.sv_vlan;
        ieee80211_free_node(ni);
        return error;
}

static int
isvap11g(const struct ieee80211vap *vap)
{
        const struct ieee80211_node *bss = vap->iv_bss;
        return bss->ni_chan != IEEE80211_CHAN_ANYC &&
            IEEE80211_IS_CHAN_ANYG(bss->ni_chan);
}

static int
isvapht(const struct ieee80211vap *vap)
{
        const struct ieee80211_node *bss = vap->iv_bss;
        return bss->ni_chan != IEEE80211_CHAN_ANYC &&
            IEEE80211_IS_CHAN_HT(bss->ni_chan);
}

/*
 * Dummy ioctl set handler so the linker set is defined.
 */
static int
dummy_ioctl_set(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        return ENOSYS;
}
IEEE80211_IOCTL_SET(dummy, dummy_ioctl_set);

static int
ieee80211_ioctl_setdefault(struct ieee80211vap *vap, struct ieee80211req *ireq)
{
        ieee80211_ioctl_setfunc * const *set;
        int error;

        SET_FOREACH(set, ieee80211_ioctl_setset) {
                error = (*set)(vap, ireq);
                if (error != ENOSYS)
                        return error;
        }
        return EINVAL;
}

static int
ieee80211_ioctl_set80211(struct ieee80211vap *vap, u_long cmd, struct ieee80211req *ireq)
{
        struct ieee80211com *ic = vap->iv_ic;
        int error;
        const struct ieee80211_authenticator *auth;
        uint8_t tmpkey[IEEE80211_KEYBUF_SIZE];
        char tmpssid[IEEE80211_NWID_LEN];
        uint8_t tmpbssid[IEEE80211_ADDR_LEN];
        struct ieee80211_key *k;
        u_int kid;
        uint32_t flags;

        error = 0;
        switch (ireq->i_type) {
        case IEEE80211_IOC_SSID:
                if (ireq->i_val != 0 ||
                    ireq->i_len > IEEE80211_NWID_LEN)
                        return EINVAL;
                error = copyin(ireq->i_data, tmpssid, ireq->i_len);
                if (error)
                        break;
                memset(vap->iv_des_ssid[0].ssid, 0, IEEE80211_NWID_LEN);
                vap->iv_des_ssid[0].len = ireq->i_len;
                memcpy(vap->iv_des_ssid[0].ssid, tmpssid, ireq->i_len);
                vap->iv_des_nssid = (ireq->i_len > 0);
                error = ENETRESET;
                break;
        case IEEE80211_IOC_WEP:
                switch (ireq->i_val) {
                case IEEE80211_WEP_OFF:
                        vap->iv_flags &= ~IEEE80211_F_PRIVACY;
                        vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
                        break;
                case IEEE80211_WEP_ON:
                        vap->iv_flags |= IEEE80211_F_PRIVACY;
                        vap->iv_flags |= IEEE80211_F_DROPUNENC;
                        break;
                case IEEE80211_WEP_MIXED:
                        vap->iv_flags |= IEEE80211_F_PRIVACY;
                        vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
                        break;
                }
                error = ENETRESET;
                break;
        case IEEE80211_IOC_WEPKEY:
                kid = (u_int) ireq->i_val;
                if (kid >= IEEE80211_WEP_NKID)
                        return EINVAL;
                k = &vap->iv_nw_keys[kid];
                if (ireq->i_len == 0) {
                        /* zero-len =>'s delete any existing key */
                        (void) ieee80211_crypto_delkey(vap, k);
                        break;
                }
                if (ireq->i_len > sizeof(tmpkey))
                        return EINVAL;
                memset(tmpkey, 0, sizeof(tmpkey));
                error = copyin(ireq->i_data, tmpkey, ireq->i_len);
                if (error)
                        break;
                ieee80211_key_update_begin(vap);
                k->wk_keyix = kid;      /* NB: force fixed key id */
                if (ieee80211_crypto_newkey(vap, IEEE80211_CIPHER_WEP,
                    IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV, k)) {
                        k->wk_keylen = ireq->i_len;
                        memcpy(k->wk_key, tmpkey, sizeof(tmpkey));
                        IEEE80211_ADDR_COPY(k->wk_macaddr, vap->iv_myaddr);
                        if  (!ieee80211_crypto_setkey(vap, k))
                                error = EINVAL;
                } else
                        error = EINVAL;
                ieee80211_key_update_end(vap);
                break;
        case IEEE80211_IOC_WEPTXKEY:
                kid = (u_int) ireq->i_val;
                if (kid >= IEEE80211_WEP_NKID &&
                    (uint16_t) kid != IEEE80211_KEYIX_NONE)
                        return EINVAL;
                /*
                 * Firmware devices may need to be told about an explicit
                 * key index here, versus just inferring it from the
                 * key set / change.  Since we may also need to pause
                 * things like transmit before the key is updated,
                 * give the driver a chance to flush things by tying
                 * into key update begin/end.
                 */
                ieee80211_key_update_begin(vap);
                ieee80211_crypto_set_deftxkey(vap, kid);
                ieee80211_key_update_end(vap);
                break;
        case IEEE80211_IOC_AUTHMODE:
                switch (ireq->i_val) {
                case IEEE80211_AUTH_WPA:
                case IEEE80211_AUTH_8021X:      /* 802.1x */
                case IEEE80211_AUTH_OPEN:       /* open */
                case IEEE80211_AUTH_SHARED:     /* shared-key */
                case IEEE80211_AUTH_AUTO:       /* auto */
                        auth = ieee80211_authenticator_get(ireq->i_val);
                        if (auth == NULL)
                                return EINVAL;
                        break;
                default:
                        return EINVAL;
                }
                switch (ireq->i_val) {
                case IEEE80211_AUTH_WPA:        /* WPA w/ 802.1x */
                        vap->iv_flags |= IEEE80211_F_PRIVACY;
                        ireq->i_val = IEEE80211_AUTH_8021X;
                        break;
                case IEEE80211_AUTH_OPEN:       /* open */
                        vap->iv_flags &= ~(IEEE80211_F_WPA|IEEE80211_F_PRIVACY);
                        break;
                case IEEE80211_AUTH_SHARED:     /* shared-key */
                case IEEE80211_AUTH_8021X:      /* 802.1x */
                        vap->iv_flags &= ~IEEE80211_F_WPA;
                        /* both require a key so mark the PRIVACY capability */
                        vap->iv_flags |= IEEE80211_F_PRIVACY;
                        break;
                case IEEE80211_AUTH_AUTO:       /* auto */
                        vap->iv_flags &= ~IEEE80211_F_WPA;
                        /* XXX PRIVACY handling? */
                        /* XXX what's the right way to do this? */
                        break;
                }
                /* NB: authenticator attach/detach happens on state change */
                vap->iv_bss->ni_authmode = ireq->i_val;
                /* XXX mixed/mode/usage? */
                vap->iv_auth = auth;
                error = ENETRESET;
                break;
        case IEEE80211_IOC_CHANNEL:
                error = ieee80211_ioctl_setchannel(vap, ireq);
                break;
        case IEEE80211_IOC_POWERSAVE:
                switch (ireq->i_val) {
                case IEEE80211_POWERSAVE_OFF:
                        if (vap->iv_flags & IEEE80211_F_PMGTON) {
                                ieee80211_syncflag(vap, -IEEE80211_F_PMGTON);
                                error = ERESTART;
                        }
                        break;
                case IEEE80211_POWERSAVE_ON:
                        if ((vap->iv_caps & IEEE80211_C_PMGT) == 0)
                                error = EOPNOTSUPP;
                        else if ((vap->iv_flags & IEEE80211_F_PMGTON) == 0) {
                                ieee80211_syncflag(vap, IEEE80211_F_PMGTON);
                                error = ERESTART;
                        }
                        break;
                default:
                        error = EINVAL;
                        break;
                }
                break;
        case IEEE80211_IOC_POWERSAVESLEEP:
                if (ireq->i_val < 0)
                        return EINVAL;
                ic->ic_lintval = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_RTSTHRESHOLD:
                if (!(IEEE80211_RTS_MIN <= ireq->i_val &&
                      ireq->i_val <= IEEE80211_RTS_MAX))
                        return EINVAL;
                vap->iv_rtsthreshold = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_PROTMODE:
                if (ireq->i_val > IEEE80211_PROT_RTSCTS)
                        return EINVAL;
                vap->iv_protmode = (enum ieee80211_protmode)ireq->i_val;
                /* NB: if not operating in 11g this can wait */
                if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
                    IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan))
                        error = ERESTART;
                /* driver callback for protection mode update */
                ieee80211_vap_update_erp_protmode(vap);
                break;
        case IEEE80211_IOC_TXPOWER:
                if ((ic->ic_caps & IEEE80211_C_TXPMGT) == 0)
                        return EOPNOTSUPP;
                if (!(IEEE80211_TXPOWER_MIN <= ireq->i_val &&
                      ireq->i_val <= IEEE80211_TXPOWER_MAX))
                        return EINVAL;
                ic->ic_txpowlimit = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_ROAMING:
                if (!(IEEE80211_ROAMING_DEVICE <= ireq->i_val &&
                    ireq->i_val <= IEEE80211_ROAMING_MANUAL))
                        return EINVAL;
                vap->iv_roaming = (enum ieee80211_roamingmode)ireq->i_val;
                /* XXXX reset? */
                break;
        case IEEE80211_IOC_PRIVACY:
                if (ireq->i_val) {
                        /* XXX check for key state? */
                        vap->iv_flags |= IEEE80211_F_PRIVACY;
                } else
                        vap->iv_flags &= ~IEEE80211_F_PRIVACY;
                /* XXX ERESTART? */
                break;
        case IEEE80211_IOC_DROPUNENCRYPTED:
                if (ireq->i_val)
                        vap->iv_flags |= IEEE80211_F_DROPUNENC;
                else
                        vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
                /* XXX ERESTART? */
                break;
        case IEEE80211_IOC_WPAKEY:
                error = ieee80211_ioctl_setkey(vap, ireq);
                break;
        case IEEE80211_IOC_DELKEY:
                error = ieee80211_ioctl_delkey(vap, ireq);
                break;
        case IEEE80211_IOC_MLME:
                error = ieee80211_ioctl_setmlme(vap, ireq);
                break;
        case IEEE80211_IOC_COUNTERMEASURES:
                if (ireq->i_val) {
                        if ((vap->iv_flags & IEEE80211_F_WPA) == 0)
                                return EOPNOTSUPP;
                        vap->iv_flags |= IEEE80211_F_COUNTERM;
                } else
                        vap->iv_flags &= ~IEEE80211_F_COUNTERM;
                /* XXX ERESTART? */
                break;
        case IEEE80211_IOC_WPA:
                if (ireq->i_val > 3)
                        return EINVAL;
                /* XXX verify ciphers available */
                flags = vap->iv_flags & ~IEEE80211_F_WPA;
                switch (ireq->i_val) {
                case 0:
                        /* wpa_supplicant calls this to clear the WPA config */
                        break;
                case 1:
                        if (!(vap->iv_caps & IEEE80211_C_WPA1))
                                return EOPNOTSUPP;
                        flags |= IEEE80211_F_WPA1;
                        break;
                case 2:
                        if (!(vap->iv_caps & IEEE80211_C_WPA2))
                                return EOPNOTSUPP;
                        flags |= IEEE80211_F_WPA2;
                        break;
                case 3:
                        if ((vap->iv_caps & IEEE80211_C_WPA) != IEEE80211_C_WPA)
                                return EOPNOTSUPP;
                        flags |= IEEE80211_F_WPA1 | IEEE80211_F_WPA2;
                        break;
                default:        /*  Can't set any -> error */
                        return EOPNOTSUPP;
                }
                vap->iv_flags = flags;
                error = ERESTART;       /* NB: can change beacon frame */
                break;
        case IEEE80211_IOC_WME:
                if (ireq->i_val) {
                        if ((vap->iv_caps & IEEE80211_C_WME) == 0)
                                return EOPNOTSUPP;
                        ieee80211_syncflag(vap, IEEE80211_F_WME);
                } else
                        ieee80211_syncflag(vap, -IEEE80211_F_WME);
                error = ERESTART;       /* NB: can change beacon frame */
                break;
        case IEEE80211_IOC_HIDESSID:
                if (ireq->i_val)
                        vap->iv_flags |= IEEE80211_F_HIDESSID;
                else
                        vap->iv_flags &= ~IEEE80211_F_HIDESSID;
                error = ERESTART;               /* XXX ENETRESET? */
                break;
        case IEEE80211_IOC_APBRIDGE:
                if (ireq->i_val == 0)
                        vap->iv_flags |= IEEE80211_F_NOBRIDGE;
                else
                        vap->iv_flags &= ~IEEE80211_F_NOBRIDGE;
                break;
        case IEEE80211_IOC_BSSID:
                if (ireq->i_len != sizeof(tmpbssid))
                        return EINVAL;
                error = copyin(ireq->i_data, tmpbssid, ireq->i_len);
                if (error)
                        break;
                IEEE80211_ADDR_COPY(vap->iv_des_bssid, tmpbssid);
                if (IEEE80211_ADDR_EQ(vap->iv_des_bssid, zerobssid))
                        vap->iv_flags &= ~IEEE80211_F_DESBSSID;
                else
                        vap->iv_flags |= IEEE80211_F_DESBSSID;
                error = ENETRESET;
                break;
        case IEEE80211_IOC_CHANLIST:
                error = ieee80211_ioctl_setchanlist(vap, ireq);
                break;
#define OLD_IEEE80211_IOC_SCAN_REQ      23
#ifdef OLD_IEEE80211_IOC_SCAN_REQ
        case OLD_IEEE80211_IOC_SCAN_REQ:
                IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
                        "%s: active scan request\n", __func__);
                /*
                 * If we are in INIT state then the driver has never
                 * had a chance to setup hardware state to do a scan;
                 * use the state machine to get us up the SCAN state.
                 * Otherwise just invoke the scan machinery to start
                 * a one-time scan.
                 */
                if (vap->iv_state == IEEE80211_S_INIT)
                        ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
                else
                        (void) ieee80211_start_scan(vap,
                                IEEE80211_SCAN_ACTIVE |
                                IEEE80211_SCAN_NOPICK |
                                IEEE80211_SCAN_ONCE,
                                IEEE80211_SCAN_FOREVER, 0, 0,
                                /* XXX use ioctl params */
                                vap->iv_des_nssid, vap->iv_des_ssid);
                break;
#endif /* OLD_IEEE80211_IOC_SCAN_REQ */
        case IEEE80211_IOC_SCAN_REQ:
                error = ieee80211_ioctl_scanreq(vap, ireq);
                break;
        case IEEE80211_IOC_SCAN_CANCEL:
                IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
                    "%s: cancel scan\n", __func__);
                ieee80211_cancel_scan(vap);
                break;
        case IEEE80211_IOC_HTCONF:
                if (ireq->i_val & 1)
                        ieee80211_syncflag_ht(vap, IEEE80211_FHT_HT);
                else
                        ieee80211_syncflag_ht(vap, -IEEE80211_FHT_HT);
                if (ireq->i_val & 2)
                        ieee80211_syncflag_ht(vap, IEEE80211_FHT_USEHT40);
                else
                        ieee80211_syncflag_ht(vap, -IEEE80211_FHT_USEHT40);
                error = ENETRESET;
                break;
        case IEEE80211_IOC_ADDMAC:
        case IEEE80211_IOC_DELMAC:
                error = ieee80211_ioctl_macmac(vap, ireq);
                break;
        case IEEE80211_IOC_MACCMD:
                error = ieee80211_ioctl_setmaccmd(vap, ireq);
                break;
        case IEEE80211_IOC_STA_STATS:
                error = ieee80211_ioctl_setstastats(vap, ireq);
                break;
        case IEEE80211_IOC_STA_TXPOW:
                error = ieee80211_ioctl_setstatxpow(vap, ireq);
                break;
        case IEEE80211_IOC_WME_CWMIN:           /* WME: CWmin */
        case IEEE80211_IOC_WME_CWMAX:           /* WME: CWmax */
        case IEEE80211_IOC_WME_AIFS:            /* WME: AIFS */
        case IEEE80211_IOC_WME_TXOPLIMIT:       /* WME: txops limit */
        case IEEE80211_IOC_WME_ACM:             /* WME: ACM (bss only) */
        case IEEE80211_IOC_WME_ACKPOLICY:       /* WME: ACK policy (!bss only) */
                error = ieee80211_ioctl_setwmeparam(vap, ireq);
                break;
        case IEEE80211_IOC_DTIM_PERIOD:
                if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
                    vap->iv_opmode != IEEE80211_M_MBSS &&
                    vap->iv_opmode != IEEE80211_M_IBSS)
                        return EINVAL;
                if (IEEE80211_DTIM_MIN <= ireq->i_val &&
                    ireq->i_val <= IEEE80211_DTIM_MAX) {
                        vap->iv_dtim_period = ireq->i_val;
                        error = ENETRESET;              /* requires restart */
                } else
                        error = EINVAL;
                break;
        case IEEE80211_IOC_BEACON_INTERVAL:
                if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
                    vap->iv_opmode != IEEE80211_M_MBSS &&
                    vap->iv_opmode != IEEE80211_M_IBSS)
                        return EINVAL;
                if (IEEE80211_BINTVAL_MIN <= ireq->i_val &&
                    ireq->i_val <= IEEE80211_BINTVAL_MAX) {
                        ic->ic_bintval = ireq->i_val;
                        error = ENETRESET;              /* requires restart */
                } else
                        error = EINVAL;
                break;
        case IEEE80211_IOC_PUREG:
                if (ireq->i_val)
                        vap->iv_flags |= IEEE80211_F_PUREG;
                else
                        vap->iv_flags &= ~IEEE80211_F_PUREG;
                /* NB: reset only if we're operating on an 11g channel */
                if (isvap11g(vap))
                        error = ENETRESET;
                break;
        case IEEE80211_IOC_QUIET:
                vap->iv_quiet= ireq->i_val;
                break;
        case IEEE80211_IOC_QUIET_COUNT:
                vap->iv_quiet_count=ireq->i_val;
                break;
        case IEEE80211_IOC_QUIET_PERIOD:
                vap->iv_quiet_period=ireq->i_val;
                break;
        case IEEE80211_IOC_QUIET_OFFSET:
                vap->iv_quiet_offset=ireq->i_val;
                break;
        case IEEE80211_IOC_QUIET_DUR:
                if(ireq->i_val < vap->iv_bss->ni_intval)
                        vap->iv_quiet_duration = ireq->i_val;
                else
                        error = EINVAL;
                break;
        case IEEE80211_IOC_BGSCAN:
                if (ireq->i_val) {
                        if ((vap->iv_caps & IEEE80211_C_BGSCAN) == 0)
                                return EOPNOTSUPP;
                        vap->iv_flags |= IEEE80211_F_BGSCAN;
                } else
                        vap->iv_flags &= ~IEEE80211_F_BGSCAN;
                break;
        case IEEE80211_IOC_BGSCAN_IDLE:
                if (ireq->i_val >= IEEE80211_BGSCAN_IDLE_MIN)
                        vap->iv_bgscanidle = ireq->i_val*hz/1000;
                else
                        error = EINVAL;
                break;
        case IEEE80211_IOC_BGSCAN_INTERVAL:
                if (ireq->i_val >= IEEE80211_BGSCAN_INTVAL_MIN)
                        vap->iv_bgscanintvl = ireq->i_val*hz;
                else
                        error = EINVAL;
                break;
        case IEEE80211_IOC_SCANVALID:
                if (ireq->i_val >= IEEE80211_SCAN_VALID_MIN)
                        vap->iv_scanvalid = ireq->i_val*hz;
                else
                        error = EINVAL;
                break;
        case IEEE80211_IOC_FRAGTHRESHOLD:
                if ((vap->iv_caps & IEEE80211_C_TXFRAG) == 0 &&
                    ireq->i_val != IEEE80211_FRAG_MAX)
                        return EOPNOTSUPP;
                if (!(IEEE80211_FRAG_MIN <= ireq->i_val &&
                      ireq->i_val <= IEEE80211_FRAG_MAX))
                        return EINVAL;
                vap->iv_fragthreshold = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_BURST:
                if (ireq->i_val) {
                        if ((vap->iv_caps & IEEE80211_C_BURST) == 0)
                                return EOPNOTSUPP;
                        ieee80211_syncflag(vap, IEEE80211_F_BURST);
                } else
                        ieee80211_syncflag(vap, -IEEE80211_F_BURST);
                error = ERESTART;
                break;
        case IEEE80211_IOC_BMISSTHRESHOLD:
                if (!(IEEE80211_HWBMISS_MIN <= ireq->i_val &&
                      ireq->i_val <= IEEE80211_HWBMISS_MAX))
                        return EINVAL;
                vap->iv_bmissthreshold = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_CURCHAN:
                error = ieee80211_ioctl_setcurchan(vap, ireq);
                break;
        case IEEE80211_IOC_SHORTGI:
                if (ireq->i_val) {
#define IEEE80211_HTCAP_SHORTGI \
        (IEEE80211_HTCAP_SHORTGI20 | IEEE80211_HTCAP_SHORTGI40)
                        if (((ireq->i_val ^ vap->iv_htcaps) & IEEE80211_HTCAP_SHORTGI) != 0)
                                return EINVAL;
                        if (ireq->i_val & IEEE80211_HTCAP_SHORTGI20)
                                vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI20;
                        if (ireq->i_val & IEEE80211_HTCAP_SHORTGI40)
                                vap->iv_flags_ht |= IEEE80211_FHT_SHORTGI40;
#undef IEEE80211_HTCAP_SHORTGI
                } else
                        vap->iv_flags_ht &=
                            ~(IEEE80211_FHT_SHORTGI20 | IEEE80211_FHT_SHORTGI40);
                error = ERESTART;
                break;
        case IEEE80211_IOC_AMPDU:
                if (ireq->i_val && (vap->iv_htcaps & IEEE80211_HTC_AMPDU) == 0)
                        return EINVAL;
                if (ireq->i_val & 1)
                        vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_TX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_TX;
                if (ireq->i_val & 2)
                        vap->iv_flags_ht |= IEEE80211_FHT_AMPDU_RX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_RX;
                /* NB: reset only if we're operating on an 11n channel */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_AMPDU_LIMIT:
                /* XXX TODO: figure out ampdu_limit versus ampdu_rxmax */
                if (!(IEEE80211_HTCAP_MAXRXAMPDU_8K <= ireq->i_val &&
                      ireq->i_val <= IEEE80211_HTCAP_MAXRXAMPDU_64K))
                        return EINVAL;
                if (vap->iv_opmode == IEEE80211_M_HOSTAP)
                        vap->iv_ampdu_rxmax = ireq->i_val;
                else
                        vap->iv_ampdu_limit = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_AMPDU_DENSITY:
                if (!(IEEE80211_HTCAP_MPDUDENSITY_NA <= ireq->i_val &&
                      ireq->i_val <= IEEE80211_HTCAP_MPDUDENSITY_16))
                        return EINVAL;
                vap->iv_ampdu_density = ireq->i_val;
                error = ERESTART;
                break;
        case IEEE80211_IOC_AMSDU:
                if (ireq->i_val && (vap->iv_htcaps & IEEE80211_HTC_AMSDU) == 0)
                        return EINVAL;
                if (ireq->i_val & 1)
                        vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_TX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_AMSDU_TX;
                if (ireq->i_val & 2)
                        vap->iv_flags_ht |= IEEE80211_FHT_AMSDU_RX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_AMSDU_RX;
                /* NB: reset only if we're operating on an 11n channel */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_AMSDU_LIMIT:
                /* XXX validate */
                vap->iv_amsdu_limit = ireq->i_val;      /* XXX truncation? */
                break;
        case IEEE80211_IOC_PUREN:
                if (ireq->i_val) {
                        if ((vap->iv_flags_ht & IEEE80211_FHT_HT) == 0)
                                return EINVAL;
                        vap->iv_flags_ht |= IEEE80211_FHT_PUREN;
                } else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_PUREN;
                /* NB: reset only if we're operating on an 11n channel */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_DOTH:
                if (ireq->i_val) {
#if 0
                        /* XXX no capability */
                        if ((vap->iv_caps & IEEE80211_C_DOTH) == 0)
                                return EOPNOTSUPP;
#endif
                        vap->iv_flags |= IEEE80211_F_DOTH;
                } else
                        vap->iv_flags &= ~IEEE80211_F_DOTH;
                error = ENETRESET;
                break;
        case IEEE80211_IOC_REGDOMAIN:
                error = ieee80211_ioctl_setregdomain(vap, ireq);
                break;
        case IEEE80211_IOC_ROAM:
                error = ieee80211_ioctl_setroam(vap, ireq);
                break;
        case IEEE80211_IOC_TXPARAMS:
                error = ieee80211_ioctl_settxparams(vap, ireq);
                break;
        case IEEE80211_IOC_HTCOMPAT:
                if (ireq->i_val) {
                        if ((vap->iv_flags_ht & IEEE80211_FHT_HT) == 0)
                                return EOPNOTSUPP;
                        vap->iv_flags_ht |= IEEE80211_FHT_HTCOMPAT;
                } else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_HTCOMPAT;
                /* NB: reset only if we're operating on an 11n channel */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_DWDS:
                if (ireq->i_val) {
                        /* NB: DWDS only makes sense for WDS-capable devices */
                        if ((ic->ic_caps & IEEE80211_C_WDS) == 0)
                                return EOPNOTSUPP;
                        /* NB: DWDS is used only with ap+sta vaps */
                        if (vap->iv_opmode != IEEE80211_M_HOSTAP &&
                            vap->iv_opmode != IEEE80211_M_STA)
                                return EINVAL;
                        vap->iv_flags |= IEEE80211_F_DWDS;
                        if (vap->iv_opmode == IEEE80211_M_STA)
                                vap->iv_flags_ext |= IEEE80211_FEXT_4ADDR;
                } else {
                        vap->iv_flags &= ~IEEE80211_F_DWDS;
                        if (vap->iv_opmode == IEEE80211_M_STA)
                                vap->iv_flags_ext &= ~IEEE80211_FEXT_4ADDR;
                }
                break;
        case IEEE80211_IOC_INACTIVITY:
                if (ireq->i_val)
                        vap->iv_flags_ext |= IEEE80211_FEXT_INACT;
                else
                        vap->iv_flags_ext &= ~IEEE80211_FEXT_INACT;
                break;
        case IEEE80211_IOC_APPIE:
                error = ieee80211_ioctl_setappie(vap, ireq);
                break;
        case IEEE80211_IOC_WPS:
                if (ireq->i_val) {
                        if ((vap->iv_caps & IEEE80211_C_WPA) == 0)
                                return EOPNOTSUPP;
                        vap->iv_flags_ext |= IEEE80211_FEXT_WPS;
                } else
                        vap->iv_flags_ext &= ~IEEE80211_FEXT_WPS;
                break;
        case IEEE80211_IOC_TSN:
                if (ireq->i_val) {
                        if ((vap->iv_caps & IEEE80211_C_WPA) == 0)
                                return EOPNOTSUPP;
                        vap->iv_flags_ext |= IEEE80211_FEXT_TSN;
                } else
                        vap->iv_flags_ext &= ~IEEE80211_FEXT_TSN;
                break;
        case IEEE80211_IOC_CHANSWITCH:
                error = ieee80211_ioctl_chanswitch(vap, ireq);
                break;
        case IEEE80211_IOC_DFS:
                if (ireq->i_val) {
                        if ((vap->iv_caps & IEEE80211_C_DFS) == 0)
                                return EOPNOTSUPP;
                        /* NB: DFS requires 11h support */
                        if ((vap->iv_flags & IEEE80211_F_DOTH) == 0)
                                return EINVAL;
                        vap->iv_flags_ext |= IEEE80211_FEXT_DFS;
                } else
                        vap->iv_flags_ext &= ~IEEE80211_FEXT_DFS;
                break;
        case IEEE80211_IOC_DOTD:
                if (ireq->i_val)
                        vap->iv_flags_ext |= IEEE80211_FEXT_DOTD;
                else
                        vap->iv_flags_ext &= ~IEEE80211_FEXT_DOTD;
                if (vap->iv_opmode == IEEE80211_M_STA)
                        error = ENETRESET;
                break;
        case IEEE80211_IOC_HTPROTMODE:
                if (ireq->i_val > IEEE80211_PROT_RTSCTS)
                        return EINVAL;
                vap->iv_htprotmode = ireq->i_val ?
                    IEEE80211_PROT_RTSCTS : IEEE80211_PROT_NONE;
                /* NB: if not operating in 11n this can wait */
                if (isvapht(vap))
                        error = ERESTART;
                /* Notify driver layer of HT protmode changes */
                ieee80211_vap_update_ht_protmode(vap);
                break;
        case IEEE80211_IOC_STA_VLAN:
                error = ieee80211_ioctl_setstavlan(vap, ireq);
                break;
        case IEEE80211_IOC_SMPS:
                if ((ireq->i_val &~ IEEE80211_HTCAP_SMPS) != 0 ||
                    ireq->i_val == 0x0008)      /* value of 2 is reserved */
                        return EINVAL;
                if (ireq->i_val != IEEE80211_HTCAP_SMPS_OFF &&
                    (vap->iv_htcaps & IEEE80211_HTC_SMPS) == 0)
                        return EOPNOTSUPP;
                vap->iv_htcaps = (vap->iv_htcaps &~ IEEE80211_HTCAP_SMPS) |
                        ireq->i_val;
                /* NB: if not operating in 11n this can wait */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_RIFS:
                if (ireq->i_val != 0) {
                        if ((vap->iv_htcaps & IEEE80211_HTC_RIFS) == 0)
                                return EOPNOTSUPP;
                        vap->iv_flags_ht |= IEEE80211_FHT_RIFS;
                } else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_RIFS;
                /* NB: if not operating in 11n this can wait */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_STBC:
                /* Check if we can do STBC TX/RX before changing the setting */
                if ((ireq->i_val & 1) &&
                    ((vap->iv_htcaps & IEEE80211_HTCAP_TXSTBC) == 0))
                        return EOPNOTSUPP;
                if ((ireq->i_val & 2) &&
                    ((vap->iv_htcaps & IEEE80211_HTCAP_RXSTBC) == 0))
                        return EOPNOTSUPP;

                /* TX */
                if (ireq->i_val & 1)
                        vap->iv_flags_ht |= IEEE80211_FHT_STBC_TX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_STBC_TX;

                /* RX */
                if (ireq->i_val & 2)
                        vap->iv_flags_ht |= IEEE80211_FHT_STBC_RX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_STBC_RX;

                /* NB: reset only if we're operating on an 11n channel */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_LDPC:
                /* Check if we can do LDPC TX/RX before changing the setting */
                if ((ireq->i_val & 1) &&
                    (vap->iv_htcaps & IEEE80211_HTC_TXLDPC) == 0)
                        return EOPNOTSUPP;
                if ((ireq->i_val & 2) &&
                    (vap->iv_htcaps & IEEE80211_HTCAP_LDPC) == 0)
                        return EOPNOTSUPP;

                /* TX */
                if (ireq->i_val & 1)
                        vap->iv_flags_ht |= IEEE80211_FHT_LDPC_TX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_LDPC_TX;

                /* RX */
                if (ireq->i_val & 2)
                        vap->iv_flags_ht |= IEEE80211_FHT_LDPC_RX;
                else
                        vap->iv_flags_ht &= ~IEEE80211_FHT_LDPC_RX;

                /* NB: reset only if we're operating on an 11n channel */
                if (isvapht(vap))
                        error = ERESTART;
                break;
        case IEEE80211_IOC_UAPSD:
                if ((vap->iv_caps & IEEE80211_C_UAPSD) == 0)
                        return EOPNOTSUPP;
                if (ireq->i_val == 0)
                        vap->iv_flags_ext &= ~IEEE80211_FEXT_UAPSD;
                else if (ireq->i_val == 1)
                        vap->iv_flags_ext |= IEEE80211_FEXT_UAPSD;
                else
                        return EINVAL;
                break;

        /* VHT */
        case IEEE80211_IOC_VHTCONF:
                if (ireq->i_val & IEEE80211_FVHT_VHT)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_VHT);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_VHT);

                if (ireq->i_val & IEEE80211_FVHT_USEVHT40)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT40);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT40);

                if (ireq->i_val & IEEE80211_FVHT_USEVHT80)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT80);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT80);

                if (ireq->i_val & IEEE80211_FVHT_USEVHT160)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT160);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT160);

                if (ireq->i_val & IEEE80211_FVHT_USEVHT80P80)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_USEVHT80P80);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_USEVHT80P80);

                /* Check if we can do STBC TX/RX before changing the setting. */
                if ((ireq->i_val & IEEE80211_FVHT_STBC_TX) &&
                    ((vap->iv_vht_cap.vht_cap_info & IEEE80211_VHTCAP_TXSTBC) == 0))
                        return EOPNOTSUPP;
                if ((ireq->i_val & IEEE80211_FVHT_STBC_RX) &&
                    ((vap->iv_vht_cap.vht_cap_info & IEEE80211_VHTCAP_RXSTBC_MASK) == 0))
                        return EOPNOTSUPP;

                /* TX */
                if (ireq->i_val & IEEE80211_FVHT_STBC_TX)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_STBC_TX);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_STBC_TX);

                /* RX */
                if (ireq->i_val & IEEE80211_FVHT_STBC_RX)
                        ieee80211_syncflag_vht(vap, IEEE80211_FVHT_STBC_RX);
                else
                        ieee80211_syncflag_vht(vap, -IEEE80211_FVHT_STBC_RX);

                error = ENETRESET;
                break;

        default:
                error = ieee80211_ioctl_setdefault(vap, ireq);
                break;
        }
        /*
         * The convention is that ENETRESET means an operation
         * requires a complete re-initialization of the device (e.g.
         * changing something that affects the association state).
         * ERESTART means the request may be handled with only a
         * reload of the hardware state.  We hand ERESTART requests
         * to the iv_reset callback so the driver can decide.  If
         * a device does not fillin iv_reset then it defaults to one
         * that returns ENETRESET.  Otherwise a driver may return
         * ENETRESET (in which case a full reset will be done) or
         * 0 to mean there's no need to do anything (e.g. when the
         * change has no effect on the driver/device).
         */
        if (error == ERESTART)
                error = IFNET_IS_UP_RUNNING(vap->iv_ifp) ?
                    vap->iv_reset(vap, ireq->i_type) : 0;
        if (error == ENETRESET) {
                /* XXX need to re-think AUTO handling */
                if (IS_UP_AUTO(vap))
                        ieee80211_init(vap);
                error = 0;
        }
        return error;
}

int
ieee80211_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
        struct ieee80211vap *vap = ifp->if_softc;
        struct ieee80211com *ic = vap->iv_ic;
        int error = 0, wait = 0, ic_used;
        struct ifreq *ifr;
        struct ifaddr *ifa;                     /* XXX */

        ic_used = (cmd != SIOCSIFMTU && cmd != SIOCG80211STATS);
        if (ic_used && (error = ieee80211_com_vincref(vap)) != 0)
                return (error);

        switch (cmd) {
        case SIOCSIFFLAGS:
                IEEE80211_LOCK(ic);
                if ((ifp->if_flags ^ vap->iv_ifflags) & IFF_PROMISC) {
                        /*
                         * Enable promiscuous mode when:
                         * 1. Interface is not a member of bridge, or
                         * 2. Requested by user, or
                         * 3. In monitor (or adhoc-demo) mode.
                         */
                        if (ifp->if_bridge == NULL ||
                            (ifp->if_flags & IFF_PPROMISC) != 0 ||
                            vap->iv_opmode == IEEE80211_M_MONITOR ||
                            (vap->iv_opmode == IEEE80211_M_AHDEMO &&
                            (vap->iv_caps & IEEE80211_C_TDMA) == 0)) {
                                ieee80211_promisc(vap,
                                    ifp->if_flags & IFF_PROMISC);
                                vap->iv_ifflags ^= IFF_PROMISC;
                        }
                }
                if ((ifp->if_flags ^ vap->iv_ifflags) & IFF_ALLMULTI) {
                        ieee80211_allmulti(vap, ifp->if_flags & IFF_ALLMULTI);
                        vap->iv_ifflags ^= IFF_ALLMULTI;
                }
                if (ifp->if_flags & IFF_UP) {
                        /*
                         * Bring ourself up unless we're already operational.
                         * If we're the first vap and the parent is not up
                         * then it will automatically be brought up as a
                         * side-effect of bringing ourself up.
                         */
                        if (vap->iv_state == IEEE80211_S_INIT) {
                                if (ic->ic_nrunning == 0)
                                        wait = 1;
                                ieee80211_start_locked(vap);
                        }
                } else if (ieee80211_vap_ifp_check_is_running(vap)) {
                        /*
                         * Stop ourself.  If we are the last vap to be
                         * marked down the parent will also be taken down.
                         */
                        if (ic->ic_nrunning == 1)
                                wait = 1;
                        ieee80211_stop_locked(vap);
                }
                IEEE80211_UNLOCK(ic);
                /* Wait for parent ioctl handler if it was queued */
                if (wait) {
                        ieee80211_waitfor_parent(ic);
                        ieee80211_vap_sync_mac_address(vap);
                }
                break;
        case SIOCADDMULTI:
        case SIOCDELMULTI:
                ieee80211_runtask(ic, &ic->ic_mcast_task);
                break;
        case SIOCSIFMEDIA:
        case SIOCGIFMEDIA:
                ifr = (struct ifreq *)data;
                error = ifmedia_ioctl(ifp, ifr, &vap->iv_media, cmd);
                break;
        case SIOCG80211:
                error = ieee80211_ioctl_get80211(vap, cmd,
                                (struct ieee80211req *) data);
                break;
        case SIOCS80211:
                error = ieee80211_priv_check_vap_manage(cmd, vap, ifp);
                if (error == 0)
                        error = ieee80211_ioctl_set80211(vap, cmd,
                                        (struct ieee80211req *) data);
                break;
        case SIOCG80211STATS:
                ifr = (struct ifreq *)data;
                error = copyout(&vap->iv_stats, ifr_data_get_ptr(ifr),
                    sizeof(vap->iv_stats));
                break;
        case SIOCSIFMTU:
                ifr = (struct ifreq *)data;
                if (!(IEEE80211_MTU_MIN <= ifr->ifr_mtu &&
                    ifr->ifr_mtu <= IEEE80211_MTU_MAX))
                        error = EINVAL;
                else
                        ifp->if_mtu = ifr->ifr_mtu;
                break;
        case SIOCSIFADDR:
                /*
                 * XXX Handle this directly so we can suppress if_init calls.
                 * XXX This should be done in ether_ioctl but for the moment
                 * XXX there are too many other parts of the system that
                 * XXX set IFF_UP and so suppress if_init being called when
                 * XXX it should be.
                 */
                ifa = (struct ifaddr *) data;
                switch (ifa->ifa_addr->sa_family) {
#ifdef INET
                case AF_INET:
                        if ((ifp->if_flags & IFF_UP) == 0) {
                                ifp->if_flags |= IFF_UP;
                                ifp->if_init(ifp->if_softc);
                        }
                        arp_ifinit(ifp, ifa);
                        break;
#endif
                default:
                        if ((ifp->if_flags & IFF_UP) == 0) {
                                ifp->if_flags |= IFF_UP;
                                ifp->if_init(ifp->if_softc);
                        }
                        break;
                }
                break;
        case SIOCSIFLLADDR:
                error = ieee80211_priv_check_vap_setmac(cmd, vap, ifp);
                if (error == 0)
                        break;
                /* Fallthrough */
        default:
                /*
                 * Pass unknown ioctls first to the driver, and if it
                 * returns ENOTTY, then to the generic Ethernet handler.
                 */
                if (ic->ic_ioctl != NULL &&
                    (error = ic->ic_ioctl(ic, cmd, data)) != ENOTTY)
                        break;
                error = ether_ioctl(ifp, cmd, data);
                break;
        }

        if (ic_used)
                ieee80211_com_vdecref(vap);

        return (error);
}