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Re: [PATCH v2 1/3] mac80211: Use a cfg80211_chan_def in ieee80211_hw_conf_chan

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Sent from my iPad

On 25 mrt. 2013, at 21:51, Karl Beldan <karl.beldan@xxxxxxxxx> wrote:

> From: Karl Beldan <karl.beldan@xxxxxxxxxxxxxxxx>
> 
> Drivers that don't use chanctxes cannot perform VHT association because
> they still use a "backward compatibility" pair of {ieee80211_channel,
> nl80211_channel_type} in ieee80211_conf and ieee80211_local.
> 
> Signed-off-by: Karl Beldan <karl.beldan@xxxxxxxxxxxxxxxx>

For the rt2x00 parts:
Acked-by: Gertjan van Wingerde <gwingerde@xxxxxxxxx>

> ---
> drivers/net/wireless/adm8211.c                     |    3 +-
> drivers/net/wireless/at76c50x-usb.c                |    4 +-
> drivers/net/wireless/ath/ar5523/ar5523.c           |   14 ++--
> drivers/net/wireless/ath/ath5k/base.c              |    2 +-
> drivers/net/wireless/ath/ath5k/mac80211-ops.c      |    4 +-
> drivers/net/wireless/ath/ath9k/beacon.c            |    2 +-
> drivers/net/wireless/ath/ath9k/calib.c             |    2 +-
> drivers/net/wireless/ath/ath9k/common.c            |    5 +-
> drivers/net/wireless/ath/ath9k/htc_drv_main.c      |   16 +++--
> drivers/net/wireless/ath/ath9k/htc_drv_txrx.c      |    8 +-
> drivers/net/wireless/ath/ath9k/hw.c                |    5 +-
> drivers/net/wireless/ath/ath9k/link.c              |    2 +-
> drivers/net/wireless/ath/ath9k/main.c              |   10 ++-
> drivers/net/wireless/ath/ath9k/rc.c                |    4 +-
> drivers/net/wireless/ath/ath9k/recv.c              |    6 +-
> drivers/net/wireless/ath/carl9170/debug.c          |    5 +-
> drivers/net/wireless/ath/carl9170/mac.c            |    8 +-
> drivers/net/wireless/ath/carl9170/main.c           |    9 ++-
> drivers/net/wireless/ath/carl9170/phy.c            |    4 +-
> drivers/net/wireless/b43/b43.h                     |    2 +-
> drivers/net/wireless/b43/main.c                    |    8 +-
> drivers/net/wireless/b43/phy_ht.c                  |    5 +-
> drivers/net/wireless/b43/phy_lcn.c                 |    5 +-
> drivers/net/wireless/b43/phy_n.c                   |    5 +-
> drivers/net/wireless/b43legacy/main.c              |    9 ++-
> drivers/net/wireless/brcm80211/brcmsmac/channel.c  |    4 +-
> .../net/wireless/brcm80211/brcmsmac/mac80211_if.c  |    6 +-
> drivers/net/wireless/brcm80211/brcmsmac/main.c     |    4 +-
> drivers/net/wireless/iwlegacy/3945-rs.c            |    2 +-
> drivers/net/wireless/iwlegacy/4965-rs.c            |    2 +-
> drivers/net/wireless/iwlegacy/common.c             |    2 +-
> drivers/net/wireless/iwlwifi/dvm/rs.c              |    2 +-
> drivers/net/wireless/iwlwifi/dvm/rxon.c            |    9 ++-
> drivers/net/wireless/libertas_tf/main.c            |    8 +-
> drivers/net/wireless/mac80211_hwsim.c              |   42 +++++++++-----
> drivers/net/wireless/mwl8k.c                       |   36 +++++++-----
> drivers/net/wireless/p54/fwio.c                    |    4 +-
> drivers/net/wireless/p54/main.c                    |    4 +-
> drivers/net/wireless/p54/txrx.c                    |    4 +-
> drivers/net/wireless/rt2x00/rt2800lib.c            |    8 +-
> drivers/net/wireless/rt2x00/rt2x00config.c         |   10 ++--
> drivers/net/wireless/rt2x00/rt61pci.c              |    2 +-
> drivers/net/wireless/rt2x00/rt73usb.c              |    2 +-
> drivers/net/wireless/rtl818x/rtl8180/dev.c         |    4 +-
> drivers/net/wireless/rtl818x/rtl8180/grf5101.c     |    3 +-
> drivers/net/wireless/rtl818x/rtl8180/max2820.c     |    2 +-
> drivers/net/wireless/rtl818x/rtl8180/rtl8225.c     |    3 +-
> drivers/net/wireless/rtl818x/rtl8180/sa2400.c      |    3 +-
> drivers/net/wireless/rtl818x/rtl8187/dev.c         |    4 +-
> drivers/net/wireless/rtl818x/rtl8187/rtl8225.c     |    3 +-
> drivers/net/wireless/rtlwifi/base.c                |    4 +-
> drivers/net/wireless/rtlwifi/core.c                |    6 +-
> drivers/net/wireless/rtlwifi/rtl8192ce/trx.c       |    4 +-
> drivers/net/wireless/rtlwifi/rtl8192cu/trx.c       |    8 +-
> drivers/net/wireless/rtlwifi/rtl8192de/trx.c       |    4 +-
> drivers/net/wireless/rtlwifi/rtl8192se/trx.c       |    4 +-
> drivers/net/wireless/rtlwifi/rtl8723ae/trx.c       |    4 +-
> drivers/net/wireless/ti/wl1251/main.c              |    5 +-
> drivers/net/wireless/ti/wlcore/main.c              |    2 +-
> drivers/net/wireless/zd1211rw/zd_mac.c             |    4 +-
> include/net/mac80211.h                             |   18 +++---
> net/mac80211/cfg.c                                 |    7 +--
> net/mac80211/chan.c                                |   11 ++--
> net/mac80211/ieee80211_i.h                         |    3 +-
> net/mac80211/main.c                                |   59 +++++++++++--------
> net/mac80211/mlme.c                                |   24 ++++++--
> net/mac80211/scan.c                                |    6 +-
> net/mac80211/trace.h                               |   37 ++++++-------
> net/mac80211/tx.c                                  |    4 +-
> net/mac80211/util.c                                |    3 +-
> 70 files changed, 293 insertions(+), 244 deletions(-)
> 
> diff --git a/drivers/net/wireless/adm8211.c b/drivers/net/wireless/adm8211.c
> index 3d339e0..f9a24e5 100644
> --- a/drivers/net/wireless/adm8211.c
> +++ b/drivers/net/wireless/adm8211.c
> @@ -1293,7 +1293,8 @@ static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
> {
>    struct adm8211_priv *priv = dev->priv;
>    struct ieee80211_conf *conf = &dev->conf;
> -    int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
> +    int channel =
> +        ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
> 
>    if (channel != priv->channel) {
>        priv->channel = channel;
> diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
> index 5ac5f7a..34c8a33 100644
> --- a/drivers/net/wireless/at76c50x-usb.c
> +++ b/drivers/net/wireless/at76c50x-usb.c
> @@ -1943,12 +1943,12 @@ static int at76_config(struct ieee80211_hw *hw, u32 changed)
>    struct at76_priv *priv = hw->priv;
> 
>    at76_dbg(DBG_MAC80211, "%s(): channel %d",
> -         __func__, hw->conf.channel->hw_value);
> +         __func__, hw->conf.chandef.chan->hw_value);
>    at76_dbg_dump(DBG_MAC80211, priv->bssid, ETH_ALEN, "bssid:");
> 
>    mutex_lock(&priv->mtx);
> 
> -    priv->channel = hw->conf.channel->hw_value;
> +    priv->channel = hw->conf.chandef.chan->hw_value;
> 
>    if (is_valid_ether_addr(priv->bssid))
>        at76_join(priv);
> diff --git a/drivers/net/wireless/ath/ar5523/ar5523.c b/drivers/net/wireless/ath/ar5523/ar5523.c
> index afd1e36..17d7fec 100644
> --- a/drivers/net/wireless/ath/ar5523/ar5523.c
> +++ b/drivers/net/wireless/ath/ar5523/ar5523.c
> @@ -457,14 +457,14 @@ static int ar5523_set_chan(struct ar5523 *ar)
>    memset(&reset, 0, sizeof(reset));
>    reset.flags |= cpu_to_be32(UATH_CHAN_2GHZ);
>    reset.flags |= cpu_to_be32(UATH_CHAN_OFDM);
> -    reset.freq = cpu_to_be32(conf->channel->center_freq);
> +    reset.freq = cpu_to_be32(conf->chandef.chan->center_freq);
>    reset.maxrdpower = cpu_to_be32(50);    /* XXX */
>    reset.channelchange = cpu_to_be32(1);
>    reset.keeprccontent = cpu_to_be32(0);
> 
>    ar5523_dbg(ar, "set chan flags 0x%x freq %d\n",
>           be32_to_cpu(reset.flags),
> -           conf->channel->center_freq);
> +           conf->chandef.chan->center_freq);
>    return ar5523_cmd_write(ar, WDCMSG_RESET, &reset, sizeof(reset), 0);
> }
> 
> @@ -594,7 +594,7 @@ static void ar5523_data_rx_cb(struct urb *urb)
>    rx_status = IEEE80211_SKB_RXCB(data->skb);
>    memset(rx_status, 0, sizeof(*rx_status));
>    rx_status->freq = be32_to_cpu(desc->channel);
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->band = hw->conf.chandef.chan->band;
>    rx_status->signal = -95 + be32_to_cpu(desc->rssi);
> 
>    ieee80211_rx_irqsafe(hw, data->skb);
> @@ -1153,13 +1153,13 @@ static int ar5523_get_wlan_mode(struct ar5523 *ar,
>    struct ieee80211_sta *sta;
>    u32 sta_rate_set;
> 
> -    band = ar->hw->wiphy->bands[ar->hw->conf.channel->band];
> +    band = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
>    sta = ieee80211_find_sta(ar->vif, bss_conf->bssid);
>    if (!sta) {
>        ar5523_info(ar, "STA not found!\n");
>        return WLAN_MODE_11b;
>    }
> -    sta_rate_set = sta->supp_rates[ar->hw->conf.channel->band];
> +    sta_rate_set = sta->supp_rates[ar->hw->conf.chandef.chan->band];
> 
>    for (bit = 0; bit < band->n_bitrates; bit++) {
>        if (sta_rate_set & 1) {
> @@ -1197,11 +1197,11 @@ static void ar5523_create_rateset(struct ar5523 *ar,
>        ar5523_info(ar, "STA not found. Cannot set rates\n");
>        sta_rate_set = bss_conf->basic_rates;
>    } else
> -        sta_rate_set = sta->supp_rates[ar->hw->conf.channel->band];
> +        sta_rate_set = sta->supp_rates[ar->hw->conf.chandef.chan->band];
> 
>    ar5523_dbg(ar, "sta rate_set = %08x\n", sta_rate_set);
> 
> -    band = ar->hw->wiphy->bands[ar->hw->conf.channel->band];
> +    band = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
>    for (bit = 0; bit < band->n_bitrates; bit++) {
>        BUG_ON(i >= AR5523_MAX_NRATES);
>        ar5523_dbg(ar, "Considering rate %d : %d\n",
> diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
> index 1d264c0..9b20d9e 100644
> --- a/drivers/net/wireless/ath/ath5k/base.c
> +++ b/drivers/net/wireless/ath/ath5k/base.c
> @@ -2639,7 +2639,7 @@ int ath5k_start(struct ieee80211_hw *hw)
>     * be followed by initialization of the appropriate bits
>     * and then setup of the interrupt mask.
>     */
> -    ah->curchan = ah->hw->conf.channel;
> +    ah->curchan = ah->hw->conf.chandef.chan;
>    ah->imask = AR5K_INT_RXOK
>        | AR5K_INT_RXERR
>        | AR5K_INT_RXEOL
> diff --git a/drivers/net/wireless/ath/ath5k/mac80211-ops.c b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
> index 4264341..06f86f4 100644
> --- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
> +++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
> @@ -202,7 +202,7 @@ ath5k_config(struct ieee80211_hw *hw, u32 changed)
>    mutex_lock(&ah->lock);
> 
>    if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
> -        ret = ath5k_chan_set(ah, conf->channel);
> +        ret = ath5k_chan_set(ah, conf->chandef.chan);
>        if (ret < 0)
>            goto unlock;
>    }
> @@ -678,7 +678,7 @@ ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey)
> 
>    memcpy(survey, &ah->survey, sizeof(*survey));
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->noise = ah->ah_noise_floor;
>    survey->filled = SURVEY_INFO_NOISE_DBM |
>            SURVEY_INFO_CHANNEL_TIME |
> diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
> index 5f05c26..2ff570f 100644
> --- a/drivers/net/wireless/ath/ath9k/beacon.c
> +++ b/drivers/net/wireless/ath/ath9k/beacon.c
> @@ -79,7 +79,7 @@ static void ath9k_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
>    u8 chainmask = ah->txchainmask;
>    u8 rate = 0;
> 
> -    sband = &sc->sbands[common->hw->conf.channel->band];
> +    sband = &sc->sbands[common->hw->conf.chandef.chan->band];
>    rate = sband->bitrates[rateidx].hw_value;
>    if (vif->bss_conf.use_short_preamble)
>        rate |= sband->bitrates[rateidx].hw_value_short;
> diff --git a/drivers/net/wireless/ath/ath9k/calib.c b/drivers/net/wireless/ath/ath9k/calib.c
> index 1e85085..b184f1f 100644
> --- a/drivers/net/wireless/ath/ath9k/calib.c
> +++ b/drivers/net/wireless/ath/ath9k/calib.c
> @@ -208,7 +208,7 @@ bool ath9k_hw_reset_calvalid(struct ath_hw *ah)
>        return true;
> 
>    ath_dbg(common, CALIBRATE, "Resetting Cal %d state for channel %u\n",
> -        currCal->calData->calType, conf->channel->center_freq);
> +        currCal->calData->calType, conf->chandef.chan->center_freq);
> 
>    ah->caldata->CalValid &= ~currCal->calData->calType;
>    currCal->calState = CAL_WAITING;
> diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c
> index 905f1b3..6c78fe7 100644
> --- a/drivers/net/wireless/ath/ath9k/common.c
> +++ b/drivers/net/wireless/ath/ath9k/common.c
> @@ -133,13 +133,14 @@ EXPORT_SYMBOL(ath9k_cmn_update_ichannel);
> struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
>                           struct ath_hw *ah)
> {
> -    struct ieee80211_channel *curchan = hw->conf.channel;
> +    struct ieee80211_channel *curchan = hw->conf.chandef.chan;
>    struct ath9k_channel *channel;
>    u8 chan_idx;
> 
>    chan_idx = curchan->hw_value;
>    channel = &ah->channels[chan_idx];
> -    ath9k_cmn_update_ichannel(channel, curchan, hw->conf.channel_type);
> +    ath9k_cmn_update_ichannel(channel, curchan,
> +                  cfg80211_get_chandef_type(&hw->conf.chandef));
> 
>    return channel;
> }
> diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> index a8016d7..098e354 100644
> --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> @@ -190,7 +190,7 @@ void ath9k_htc_reset(struct ath9k_htc_priv *priv)
> {
>    struct ath_hw *ah = priv->ah;
>    struct ath_common *common = ath9k_hw_common(ah);
> -    struct ieee80211_channel *channel = priv->hw->conf.channel;
> +    struct ieee80211_channel *channel = priv->hw->conf.chandef.chan;
>    struct ath9k_hw_cal_data *caldata = NULL;
>    enum htc_phymode mode;
>    __be16 htc_mode;
> @@ -250,7 +250,7 @@ static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
>    struct ath_common *common = ath9k_hw_common(ah);
>    struct ieee80211_conf *conf = &common->hw->conf;
>    bool fastcc;
> -    struct ieee80211_channel *channel = hw->conf.channel;
> +    struct ieee80211_channel *channel = hw->conf.chandef.chan;
>    struct ath9k_hw_cal_data *caldata = NULL;
>    enum htc_phymode mode;
>    __be16 htc_mode;
> @@ -602,7 +602,7 @@ static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
>    u32 caps = 0;
>    int i, j;
> 
> -    sband = priv->hw->wiphy->bands[priv->hw->conf.channel->band];
> +    sband = priv->hw->wiphy->bands[priv->hw->conf.chandef.chan->band];
> 
>    for (i = 0, j = 0; i < sband->n_bitrates; i++) {
>        if (sta->supp_rates[sband->band] & BIT(i)) {
> @@ -904,7 +904,7 @@ static int ath9k_htc_start(struct ieee80211_hw *hw)
>    struct ath9k_htc_priv *priv = hw->priv;
>    struct ath_hw *ah = priv->ah;
>    struct ath_common *common = ath9k_hw_common(ah);
> -    struct ieee80211_channel *curchan = hw->conf.channel;
> +    struct ieee80211_channel *curchan = hw->conf.chandef.chan;
>    struct ath9k_channel *init_channel;
>    int ret = 0;
>    enum htc_phymode mode;
> @@ -1193,15 +1193,17 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
>    }
> 
>    if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || chip_reset) {
> -        struct ieee80211_channel *curchan = hw->conf.channel;
> +        struct ieee80211_channel *curchan = hw->conf.chandef.chan;
> +        enum nl80211_channel_type channel_type =
> +            cfg80211_get_chandef_type(&hw->conf.chandef);
>        int pos = curchan->hw_value;
> 
>        ath_dbg(common, CONFIG, "Set channel: %d MHz\n",
>            curchan->center_freq);
> 
>        ath9k_cmn_update_ichannel(&priv->ah->channels[pos],
> -                      hw->conf.channel,
> -                      hw->conf.channel_type);
> +                      hw->conf.chandef.chan,
> +                      channel_type);
> 
>        if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
>            ath_err(common, "Unable to set channel\n");
> diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
> index 3ad1fd0..306c550 100644
> --- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
> +++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
> @@ -490,7 +490,7 @@ static void ath9k_htc_tx_process(struct ath9k_htc_priv *priv,
>        if (txs->ts_flags & ATH9K_HTC_TXSTAT_SGI)
>            rate->flags |= IEEE80211_TX_RC_SHORT_GI;
>    } else {
> -        if (cur_conf->channel->band == IEEE80211_BAND_5GHZ)
> +        if (cur_conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
>            rate->idx += 4; /* No CCK rates */
>    }
> 
> @@ -939,7 +939,7 @@ static void ath9k_process_rate(struct ieee80211_hw *hw,
>        return;
>    }
> 
> -    band = hw->conf.channel->band;
> +    band = hw->conf.chandef.chan->band;
>    sband = hw->wiphy->bands[band];
> 
>    for (i = 0; i < sband->n_bitrates; i++) {
> @@ -1078,8 +1078,8 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv,
>        priv->ah->stats.avgbrssi = rxbuf->rxstatus.rs_rssi;
> 
>    rx_status->mactime = be64_to_cpu(rxbuf->rxstatus.rs_tstamp);
> -    rx_status->band = hw->conf.channel->band;
> -    rx_status->freq = hw->conf.channel->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
>    rx_status->signal =  rxbuf->rxstatus.rs_rssi + ATH_DEFAULT_NOISE_FLOOR;
>    rx_status->antenna = rxbuf->rxstatus.rs_antenna;
>    rx_status->flag |= RX_FLAG_MACTIME_END;
> diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
> index 2a2ae40..d5e6a38 100644
> --- a/drivers/net/wireless/ath/ath9k/hw.c
> +++ b/drivers/net/wireless/ath/ath9k/hw.c
> @@ -139,7 +139,7 @@ static void ath9k_hw_set_clockrate(struct ath_hw *ah)
>        clockrate = 117;
>    else if (!ah->curchan) /* should really check for CCK instead */
>        clockrate = ATH9K_CLOCK_RATE_CCK;
> -    else if (conf->channel->band == IEEE80211_BAND_2GHZ)
> +    else if (conf->chandef.chan->band == IEEE80211_BAND_2GHZ)
>        clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;
>    else if (ah->caps.hw_caps & ATH9K_HW_CAP_FASTCLOCK)
>        clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM;
> @@ -1110,7 +1110,8 @@ void ath9k_hw_init_global_settings(struct ath_hw *ah)
>     * BA frames in some implementations, but it has been found to fix ACK
>     * timeout issues in other cases as well.
>     */
> -    if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ &&
> +    if (conf->chandef.chan &&
> +        conf->chandef.chan->band == IEEE80211_BAND_2GHZ &&
>        !IS_CHAN_HALF_RATE(chan) && !IS_CHAN_QUARTER_RATE(chan)) {
>        acktimeout += 64 - sifstime - ah->slottime;
>        ctstimeout += 48 - sifstime - ah->slottime;
> diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c
> index ade3afb..b1433f5 100644
> --- a/drivers/net/wireless/ath/ath9k/link.c
> +++ b/drivers/net/wireless/ath/ath9k/link.c
> @@ -213,7 +213,7 @@ static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int
>    txctl.txq = sc->tx.txq_map[IEEE80211_AC_BE];
> 
>    memset(tx_info, 0, sizeof(*tx_info));
> -    tx_info->band = hw->conf.channel->band;
> +    tx_info->band = hw->conf.chandef.chan->band;
>    tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
>    tx_info->control.rates[0].idx = 0;
>    tx_info->control.rates[0].count = 1;
> diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
> index 24650fd4..f984a03 100644
> --- a/drivers/net/wireless/ath/ath9k/main.c
> +++ b/drivers/net/wireless/ath/ath9k/main.c
> @@ -585,7 +585,7 @@ static int ath9k_start(struct ieee80211_hw *hw)
>    struct ath_softc *sc = hw->priv;
>    struct ath_hw *ah = sc->sc_ah;
>    struct ath_common *common = ath9k_hw_common(ah);
> -    struct ieee80211_channel *curchan = hw->conf.channel;
> +    struct ieee80211_channel *curchan = hw->conf.chandef.chan;
>    struct ath9k_channel *init_channel;
>    int r;
> 
> @@ -1184,7 +1184,9 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
>    }
> 
>    if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
> -        struct ieee80211_channel *curchan = hw->conf.channel;
> +        struct ieee80211_channel *curchan = hw->conf.chandef.chan;
> +        enum nl80211_channel_type channel_type =
> +            cfg80211_get_chandef_type(&conf->chandef);
>        int pos = curchan->hw_value;
>        int old_pos = -1;
>        unsigned long flags;
> @@ -1193,7 +1195,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
>            old_pos = ah->curchan - &ah->channels[0];
> 
>        ath_dbg(common, CONFIG, "Set channel: %d MHz type: %d\n",
> -            curchan->center_freq, conf->channel_type);
> +            curchan->center_freq, channel_type);
> 
>        /* update survey stats for the old channel before switching */
>        spin_lock_irqsave(&common->cc_lock, flags);
> @@ -1208,7 +1210,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
>            ath9k_hw_getnf(ah, ah->curchan);
> 
>        ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos],
> -                      curchan, conf->channel_type);
> +                      curchan, channel_type);
> 
>        /*
>         * If the operating channel changes, change the survey in-use flags
> diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
> index 96ac433..aa4d368 100644
> --- a/drivers/net/wireless/ath/ath9k/rc.c
> +++ b/drivers/net/wireless/ath/ath9k/rc.c
> @@ -814,7 +814,7 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
>     * So, set fourth rate in series to be same as third one for
>     * above conditions.
>     */
> -    if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) &&
> +    if ((sc->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) &&
>        (conf_is_ht(&sc->hw->conf))) {
>        u8 dot11rate = rate_table->info[rix].dot11rate;
>        u8 phy = rate_table->info[rix].phy;
> @@ -1328,7 +1328,7 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband,
> 
>        ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG,
>            "Operating HT Bandwidth changed to: %d\n",
> -            sc->hw->conf.channel_type);
> +            cfg80211_get_chandef_type(&sc->hw->conf.chandef));
>    }
> }
> 
> diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
> index ee156e5..c90ca57 100644
> --- a/drivers/net/wireless/ath/ath9k/recv.c
> +++ b/drivers/net/wireless/ath/ath9k/recv.c
> @@ -859,7 +859,7 @@ static int ath9k_process_rate(struct ath_common *common,
>    unsigned int i = 0;
>    struct ath_softc __maybe_unused *sc = common->priv;
> 
> -    band = hw->conf.channel->band;
> +    band = hw->conf.chandef.chan->band;
>    sband = hw->wiphy->bands[band];
> 
>    if (rx_stats->rs_rate & 0x80) {
> @@ -954,8 +954,8 @@ static int ath9k_rx_skb_preprocess(struct ath_common *common,
>    if (ath9k_process_rate(common, hw, rx_stats, rx_status))
>        return -EINVAL;
> 
> -    rx_status->band = hw->conf.channel->band;
> -    rx_status->freq = hw->conf.channel->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
>    rx_status->signal = ah->noise + rx_stats->rs_rssi;
>    rx_status->antenna = rx_stats->rs_antenna;
>    rx_status->flag |= RX_FLAG_MACTIME_END;
> diff --git a/drivers/net/wireless/ath/carl9170/debug.c b/drivers/net/wireless/ath/carl9170/debug.c
> index 93fe600..7741fe8 100644
> --- a/drivers/net/wireless/ath/carl9170/debug.c
> +++ b/drivers/net/wireless/ath/carl9170/debug.c
> @@ -654,8 +654,9 @@ static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf,
>        goto out;
> 
>    case 'P':
> -        err = carl9170_set_channel(ar, ar->hw->conf.channel,
> -            ar->hw->conf.channel_type, CARL9170_RFI_COLD);
> +        err = carl9170_set_channel(ar, ar->hw->conf.chandef.chan,
> +            cfg80211_get_chandef_type(&ar->hw->conf.chandef),
> +            CARL9170_RFI_COLD);
>        if (err < 0)
>            count = err;
> 
> diff --git a/drivers/net/wireless/ath/carl9170/mac.c b/drivers/net/wireless/ath/carl9170/mac.c
> index 24d75ab..a2f00570 100644
> --- a/drivers/net/wireless/ath/carl9170/mac.c
> +++ b/drivers/net/wireless/ath/carl9170/mac.c
> @@ -48,7 +48,7 @@ int carl9170_set_dyn_sifs_ack(struct ar9170 *ar)
>    if (conf_is_ht40(&ar->hw->conf))
>        val = 0x010a;
>    else {
> -        if (ar->hw->conf.channel->band == IEEE80211_BAND_2GHZ)
> +        if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
>            val = 0x105;
>        else
>            val = 0x104;
> @@ -66,7 +66,7 @@ int carl9170_set_rts_cts_rate(struct ar9170 *ar)
>        rts_rate = 0x1da;
>        cts_rate = 0x10a;
>    } else {
> -        if (ar->hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
> +        if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
>            /* 11 mbit CCK */
>            rts_rate = 033;
>            cts_rate = 003;
> @@ -93,7 +93,7 @@ int carl9170_set_slot_time(struct ar9170 *ar)
>        return 0;
>    }
> 
> -    if ((ar->hw->conf.channel->band == IEEE80211_BAND_5GHZ) ||
> +    if ((ar->hw->conf.chandef.chan->band == IEEE80211_BAND_5GHZ) ||
>        vif->bss_conf.use_short_slot)
>        slottime = 9;
> 
> @@ -120,7 +120,7 @@ int carl9170_set_mac_rates(struct ar9170 *ar)
>    basic |= (vif->bss_conf.basic_rates & 0xff0) << 4;
>    rcu_read_unlock();
> 
> -    if (ar->hw->conf.channel->band == IEEE80211_BAND_5GHZ)
> +    if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_5GHZ)
>        mandatory = 0xff00; /* OFDM 6/9/12/18/24/36/48/54 */
>    else
>        mandatory = 0xff0f; /* OFDM (6/9../54) + CCK (1/2/5.5/11) */
> diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
> index 08b1931..4e268b1 100644
> --- a/drivers/net/wireless/ath/carl9170/main.c
> +++ b/drivers/net/wireless/ath/carl9170/main.c
> @@ -929,6 +929,9 @@ static int carl9170_op_config(struct ieee80211_hw *hw, u32 changed)
>    }
> 
>    if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
> +        enum nl80211_channel_type channel_type =
> +            cfg80211_get_chandef_type(&hw->conf.chandef);
> +
>        /* adjust slot time for 5 GHz */
>        err = carl9170_set_slot_time(ar);
>        if (err)
> @@ -938,8 +941,8 @@ static int carl9170_op_config(struct ieee80211_hw *hw, u32 changed)
>        if (err)
>            goto out;
> 
> -        err = carl9170_set_channel(ar, hw->conf.channel,
> -            hw->conf.channel_type, CARL9170_RFI_NONE);
> +        err = carl9170_set_channel(ar, hw->conf.chandef.chan,
> +                       channel_type, CARL9170_RFI_NONE);
>        if (err)
>            goto out;
> 
> @@ -957,7 +960,7 @@ static int carl9170_op_config(struct ieee80211_hw *hw, u32 changed)
>    }
> 
>    if (changed & IEEE80211_CONF_CHANGE_POWER) {
> -        err = carl9170_set_mac_tpc(ar, ar->hw->conf.channel);
> +        err = carl9170_set_mac_tpc(ar, ar->hw->conf.chandef.chan);
>        if (err)
>            goto out;
>    }
> diff --git a/drivers/net/wireless/ath/carl9170/phy.c b/drivers/net/wireless/ath/carl9170/phy.c
> index b72c09c..c5f1fdd 100644
> --- a/drivers/net/wireless/ath/carl9170/phy.c
> +++ b/drivers/net/wireless/ath/carl9170/phy.c
> @@ -1331,7 +1331,7 @@ static void carl9170_calc_ctl(struct ar9170 *ar, u32 freq, enum carl9170_bw bw)
>     * CTL_ETSI for 2GHz and CTL_FCC for 5GHz.
>     */
>    ctl_grp = ath_regd_get_band_ctl(&ar->common.regulatory,
> -                    ar->hw->conf.channel->band);
> +                    ar->hw->conf.chandef.chan->band);
> 
>    /* ctl group not found - either invalid band (NO_CTL) or ww roaming */
>    if (ctl_grp == NO_CTL || ctl_grp == SD_NO_CTL)
> @@ -1341,7 +1341,7 @@ static void carl9170_calc_ctl(struct ar9170 *ar, u32 freq, enum carl9170_bw bw)
>        /* skip CTL and heavy clip for CTL_MKK and CTL_ETSI */
>        return;
> 
> -    if (ar->hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
> +    if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
>        modes = mode_list_2ghz;
>        nr_modes = ARRAY_SIZE(mode_list_2ghz);
>    } else {
> diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
> index 10e288d..6a4bd8c 100644
> --- a/drivers/net/wireless/b43/b43.h
> +++ b/drivers/net/wireless/b43/b43.h
> @@ -972,7 +972,7 @@ static inline int b43_is_mode(struct b43_wl *wl, int type)
>  */
> static inline enum ieee80211_band b43_current_band(struct b43_wl *wl)
> {
> -    return wl->hw->conf.channel->band;
> +    return wl->hw->conf.chandef.chan->band;
> }
> 
> static inline int b43_bus_may_powerdown(struct b43_wldev *wldev)
> diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
> index 0568273..d135e89 100644
> --- a/drivers/net/wireless/b43/main.c
> +++ b/drivers/net/wireless/b43/main.c
> @@ -3848,7 +3848,7 @@ static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
>    dev = wl->current_dev;
> 
>    /* Switch the band (if necessary). This might change the active core. */
> -    err = b43_switch_band(wl, conf->channel);
> +    err = b43_switch_band(wl, conf->chandef.chan);
>    if (err)
>        goto out_unlock_mutex;
> 
> @@ -3878,8 +3878,8 @@ static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
> 
>    /* Switch to the requested channel.
>     * The firmware takes care of races with the TX handler. */
> -    if (conf->channel->hw_value != phy->channel)
> -        b43_switch_channel(dev, conf->channel->hw_value);
> +    if (conf->chandef.chan->hw_value != phy->channel)
> +        b43_switch_channel(dev, conf->chandef.chan->hw_value);
> 
>    dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
> 
> @@ -5002,7 +5002,7 @@ static int b43_op_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->filled = SURVEY_INFO_NOISE_DBM;
>    survey->noise = dev->stats.link_noise;
> 
> diff --git a/drivers/net/wireless/b43/phy_ht.c b/drivers/net/wireless/b43/phy_ht.c
> index 7416c5e..016682e 100644
> --- a/drivers/net/wireless/b43/phy_ht.c
> +++ b/drivers/net/wireless/b43/phy_ht.c
> @@ -525,8 +525,9 @@ static void b43_phy_ht_op_switch_analog(struct b43_wldev *dev, bool on)
> static int b43_phy_ht_op_switch_channel(struct b43_wldev *dev,
>                    unsigned int new_channel)
> {
> -    struct ieee80211_channel *channel = dev->wl->hw->conf.channel;
> -    enum nl80211_channel_type channel_type = dev->wl->hw->conf.channel_type;
> +    struct ieee80211_channel *channel = dev->wl->hw->conf.chandef.chan;
> +    enum nl80211_channel_type channel_type =
> +        cfg80211_get_chandef_type(&dev->wl->hw->conf.chandef);
> 
>    if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
>        if ((new_channel < 1) || (new_channel > 14))
> diff --git a/drivers/net/wireless/b43/phy_lcn.c b/drivers/net/wireless/b43/phy_lcn.c
> index a13e28e..0bafa3b 100644
> --- a/drivers/net/wireless/b43/phy_lcn.c
> +++ b/drivers/net/wireless/b43/phy_lcn.c
> @@ -808,8 +808,9 @@ static void b43_phy_lcn_op_switch_analog(struct b43_wldev *dev, bool on)
> static int b43_phy_lcn_op_switch_channel(struct b43_wldev *dev,
>                    unsigned int new_channel)
> {
> -    struct ieee80211_channel *channel = dev->wl->hw->conf.channel;
> -    enum nl80211_channel_type channel_type = dev->wl->hw->conf.channel_type;
> +    struct ieee80211_channel *channel = dev->wl->hw->conf.chandef.chan;
> +    enum nl80211_channel_type channel_type =
> +        cfg80211_get_chandef_type(&dev->wl->hw->conf.chandef);
> 
>    if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
>        if ((new_channel < 1) || (new_channel > 14))
> diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
> index 3c35382..949a3bd 100644
> --- a/drivers/net/wireless/b43/phy_n.c
> +++ b/drivers/net/wireless/b43/phy_n.c
> @@ -5530,8 +5530,9 @@ static void b43_nphy_op_switch_analog(struct b43_wldev *dev, bool on)
> static int b43_nphy_op_switch_channel(struct b43_wldev *dev,
>                      unsigned int new_channel)
> {
> -    struct ieee80211_channel *channel = dev->wl->hw->conf.channel;
> -    enum nl80211_channel_type channel_type = dev->wl->hw->conf.channel_type;
> +    struct ieee80211_channel *channel = dev->wl->hw->conf.chandef.chan;
> +    enum nl80211_channel_type channel_type =
> +        cfg80211_get_chandef_type(&dev->wl->hw->conf.chandef);
> 
>    if (b43_current_band(dev->wl) == IEEE80211_BAND_2GHZ) {
>        if ((new_channel < 1) || (new_channel > 14))
> diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
> index 8c3f70e..5726688 100644
> --- a/drivers/net/wireless/b43legacy/main.c
> +++ b/drivers/net/wireless/b43legacy/main.c
> @@ -2720,7 +2720,7 @@ static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
>        goto out_unlock_mutex;
> 
>    /* Switch the PHY mode (if necessary). */
> -    switch (conf->channel->band) {
> +    switch (conf->chandef.chan->band) {
>    case IEEE80211_BAND_2GHZ:
>        if (phy->type == B43legacy_PHYTYPE_B)
>            new_phymode = B43legacy_PHYMODE_B;
> @@ -2748,8 +2748,9 @@ static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
> 
>    /* Switch to the requested channel.
>     * The firmware takes care of races with the TX handler. */
> -    if (conf->channel->hw_value != phy->channel)
> -        b43legacy_radio_selectchannel(dev, conf->channel->hw_value, 0);
> +    if (conf->chandef.chan->hw_value != phy->channel)
> +        b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value,
> +                          0);
> 
>    dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR);
> 
> @@ -3558,7 +3559,7 @@ static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->filled = SURVEY_INFO_NOISE_DBM;
>    survey->noise = dev->stats.link_noise;
> 
> diff --git a/drivers/net/wireless/brcm80211/brcmsmac/channel.c b/drivers/net/wireless/brcm80211/brcmsmac/channel.c
> index 10ee314..cc87926 100644
> --- a/drivers/net/wireless/brcm80211/brcmsmac/channel.c
> +++ b/drivers/net/wireless/brcm80211/brcmsmac/channel.c
> @@ -379,7 +379,7 @@ brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
>             u8 local_constraint_qdbm)
> {
>    struct brcms_c_info *wlc = wlc_cm->wlc;
> -    struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel;
> +    struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
>    struct txpwr_limits txpwr;
> 
>    brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr);
> @@ -404,7 +404,7 @@ brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec,
>               struct txpwr_limits *txpwr)
> {
>    struct brcms_c_info *wlc = wlc_cm->wlc;
> -    struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel;
> +    struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
>    uint i;
>    uint chan;
>    int maxpwr;
> diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
> index aa5f43f..70731d2 100644
> --- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
> +++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
> @@ -414,10 +414,10 @@ static int brcms_ops_config(struct ieee80211_hw *hw, u32 changed)
>                  new_int);
>    }
>    if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
> -        if (conf->channel_type == NL80211_CHAN_HT20 ||
> -            conf->channel_type == NL80211_CHAN_NO_HT)
> +        if (conf->chandef.width == NL80211_CHAN_WIDTH_20 ||
> +            conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
>            err = brcms_c_set_channel(wl->wlc,
> -                          conf->channel->hw_value);
> +                          conf->chandef.chan->hw_value);
>        else
>            err = -ENOTSUPP;
>    }
> diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c
> index 8ef02dc..e0dc183 100644
> --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
> +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
> @@ -5099,7 +5099,7 @@ int brcms_c_up(struct brcms_c_info *wlc)
>    wlc->pub->up = true;
> 
>    if (wlc->bandinit_pending) {
> -        ch = wlc->pub->ieee_hw->conf.channel;
> +        ch = wlc->pub->ieee_hw->conf.chandef.chan;
>        brcms_c_suspend_mac_and_wait(wlc);
>        brcms_c_set_chanspec(wlc, ch20mhz_chspec(ch->hw_value));
>        wlc->bandinit_pending = false;
> @@ -7748,7 +7748,7 @@ bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded)
> void brcms_c_init(struct brcms_c_info *wlc, bool mute_tx)
> {
>    struct bcma_device *core = wlc->hw->d11core;
> -    struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.channel;
> +    struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan;
>    u16 chanspec;
> 
>    brcms_dbg_info(core, "wl%d\n", wlc->pub->unit);
> diff --git a/drivers/net/wireless/iwlegacy/3945-rs.c b/drivers/net/wireless/iwlegacy/3945-rs.c
> index d4fd29a..c9f197d 100644
> --- a/drivers/net/wireless/iwlegacy/3945-rs.c
> +++ b/drivers/net/wireless/iwlegacy/3945-rs.c
> @@ -347,7 +347,7 @@ il3945_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id)
> 
>    psta = (struct il3945_sta_priv *)sta->drv_priv;
>    rs_sta = &psta->rs_sta;
> -    sband = hw->wiphy->bands[conf->channel->band];
> +    sband = hw->wiphy->bands[conf->chandef.chan->band];
> 
>    rs_sta->il = il;
> 
> diff --git a/drivers/net/wireless/iwlegacy/4965-rs.c b/drivers/net/wireless/iwlegacy/4965-rs.c
> index e8324b5..1d92a59 100644
> --- a/drivers/net/wireless/iwlegacy/4965-rs.c
> +++ b/drivers/net/wireless/iwlegacy/4965-rs.c
> @@ -2299,7 +2299,7 @@ il4965_rs_rate_init(struct il_priv *il, struct ieee80211_sta *sta, u8 sta_id)
> 
>    sta_priv = (struct il_station_priv *)sta->drv_priv;
>    lq_sta = &sta_priv->lq_sta;
> -    sband = hw->wiphy->bands[conf->channel->band];
> +    sband = hw->wiphy->bands[conf->chandef.chan->band];
> 
>    lq_sta->lq.sta_id = sta_id;
> 
> diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c
> index 722bfb5..025d8b0 100644
> --- a/drivers/net/wireless/iwlegacy/common.c
> +++ b/drivers/net/wireless/iwlegacy/common.c
> @@ -4974,7 +4974,7 @@ il_mac_config(struct ieee80211_hw *hw, u32 changed)
>    struct il_priv *il = hw->priv;
>    const struct il_channel_info *ch_info;
>    struct ieee80211_conf *conf = &hw->conf;
> -    struct ieee80211_channel *channel = conf->channel;
> +    struct ieee80211_channel *channel = conf->chandef.chan;
>    struct il_ht_config *ht_conf = &il->current_ht_config;
>    unsigned long flags = 0;
>    int ret = 0;
> diff --git a/drivers/net/wireless/iwlwifi/dvm/rs.c b/drivers/net/wireless/iwlwifi/dvm/rs.c
> index abe3042..907bd6e 100644
> --- a/drivers/net/wireless/iwlwifi/dvm/rs.c
> +++ b/drivers/net/wireless/iwlwifi/dvm/rs.c
> @@ -2831,7 +2831,7 @@ void iwl_rs_rate_init(struct iwl_priv *priv, struct ieee80211_sta *sta, u8 sta_i
> 
>    sta_priv = (struct iwl_station_priv *) sta->drv_priv;
>    lq_sta = &sta_priv->lq_sta;
> -    sband = hw->wiphy->bands[conf->channel->band];
> +    sband = hw->wiphy->bands[conf->chandef.chan->band];
> 
> 
>    lq_sta->lq.sta_id = sta_id;
> diff --git a/drivers/net/wireless/iwlwifi/dvm/rxon.c b/drivers/net/wireless/iwlwifi/dvm/rxon.c
> index 23be948..085c589 100644
> --- a/drivers/net/wireless/iwlwifi/dvm/rxon.c
> +++ b/drivers/net/wireless/iwlwifi/dvm/rxon.c
> @@ -78,8 +78,9 @@ void iwl_connection_init_rx_config(struct iwl_priv *priv,
>        ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
> #endif
> 
> -    ctx->staging.channel = cpu_to_le16(priv->hw->conf.channel->hw_value);
> -    priv->band = priv->hw->conf.channel->band;
> +    ctx->staging.channel =
> +        cpu_to_le16(priv->hw->conf.chandef.chan->hw_value);
> +    priv->band = priv->hw->conf.chandef.chan->band;
> 
>    iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
> 
> @@ -951,7 +952,7 @@ static void iwl_calc_basic_rates(struct iwl_priv *priv,
>        unsigned long basic = ctx->vif->bss_conf.basic_rates;
>        int i;
> 
> -        sband = priv->hw->wiphy->bands[priv->hw->conf.channel->band];
> +        sband = priv->hw->wiphy->bands[priv->hw->conf.chandef.chan->band];
> 
>        for_each_set_bit(i, &basic, BITS_PER_LONG) {
>            int hw = sband->bitrates[i].hw_value;
> @@ -1181,7 +1182,7 @@ int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
>    struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
>    struct iwl_rxon_context *ctx;
>    struct ieee80211_conf *conf = &hw->conf;
> -    struct ieee80211_channel *channel = conf->channel;
> +    struct ieee80211_channel *channel = conf->chandef.chan;
>    int ret = 0;
> 
>    IWL_DEBUG_MAC80211(priv, "enter: changed %#x\n", changed);
> diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
> index 7001856..088de9d 100644
> --- a/drivers/net/wireless/libertas_tf/main.c
> +++ b/drivers/net/wireless/libertas_tf/main.c
> @@ -412,9 +412,9 @@ static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
>    struct ieee80211_conf *conf = &hw->conf;
>    lbtf_deb_enter(LBTF_DEB_MACOPS);
> 
> -    if (conf->channel->center_freq != priv->cur_freq) {
> -        priv->cur_freq = conf->channel->center_freq;
> -        lbtf_set_channel(priv, conf->channel->hw_value);
> +    if (conf->chandef.chan->center_freq != priv->cur_freq) {
> +        priv->cur_freq = conf->chandef.chan->center_freq;
> +        lbtf_set_channel(priv, conf->chandef.chan->hw_value);
>    }
>    lbtf_deb_leave(LBTF_DEB_MACOPS);
>    return 0;
> @@ -537,7 +537,7 @@ static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->filled = SURVEY_INFO_NOISE_DBM;
>    survey->noise = priv->noise;
> 
> diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
> index 0064d38..4ac5486 100644
> --- a/drivers/net/wireless/mac80211_hwsim.c
> +++ b/drivers/net/wireless/mac80211_hwsim.c
> @@ -1062,11 +1062,13 @@ out:
>    return HRTIMER_NORESTART;
> }
> 
> -static const char *hwsim_chantypes[] = {
> -    [NL80211_CHAN_NO_HT] = "noht",
> -    [NL80211_CHAN_HT20] = "ht20",
> -    [NL80211_CHAN_HT40MINUS] = "ht40-",
> -    [NL80211_CHAN_HT40PLUS] = "ht40+",
> +static const char * const hwsim_chanwidths[] = {
> +    [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
> +    [NL80211_CHAN_WIDTH_20] = "ht20",
> +    [NL80211_CHAN_WIDTH_40] = "ht40",
> +    [NL80211_CHAN_WIDTH_80] = "vht80",
> +    [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
> +    [NL80211_CHAN_WIDTH_160] = "vht160",
> };
> 
> static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
> @@ -1080,18 +1082,28 @@ static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
>        [IEEE80211_SMPS_DYNAMIC] = "dynamic",
>    };
> 
> -    wiphy_debug(hw->wiphy,
> -            "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
> -            __func__,
> -            conf->channel ? conf->channel->center_freq : 0,
> -            hwsim_chantypes[conf->channel_type],
> -            !!(conf->flags & IEEE80211_CONF_IDLE),
> -            !!(conf->flags & IEEE80211_CONF_PS),
> -            smps_modes[conf->smps_mode]);
> +    if (conf->chandef.chan)
> +        wiphy_debug(hw->wiphy,
> +                "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
> +                __func__,
> +                conf->chandef.chan->center_freq,
> +                conf->chandef.center_freq1,
> +                conf->chandef.center_freq2,
> +                hwsim_chanwidths[conf->chandef.width],
> +                !!(conf->flags & IEEE80211_CONF_IDLE),
> +                !!(conf->flags & IEEE80211_CONF_PS),
> +                smps_modes[conf->smps_mode]);
> +    else
> +        wiphy_debug(hw->wiphy,
> +                "%s (freq=0 idle=%d ps=%d smps=%s)\n",
> +                __func__,
> +                !!(conf->flags & IEEE80211_CONF_IDLE),
> +                !!(conf->flags & IEEE80211_CONF_PS),
> +                smps_modes[conf->smps_mode]);
> 
>    data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
> 
> -    data->channel = conf->channel;
> +    data->channel = conf->chandef.chan;
> 
>    WARN_ON(data->channel && channels > 1);
> 
> @@ -1277,7 +1289,7 @@ static int mac80211_hwsim_get_survey(
>        return -ENOENT;
> 
>    /* Current channel */
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
> 
>    /*
>     * Magically conjured noise level --- this is only ok for simulated hardware.
> diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
> index 091d9a6..9f9a144 100644
> --- a/drivers/net/wireless/mwl8k.c
> +++ b/drivers/net/wireless/mwl8k.c
> @@ -2837,7 +2837,9 @@ static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
>                     struct ieee80211_conf *conf,
>                     unsigned short pwr)
> {
> -    struct ieee80211_channel *channel = conf->channel;
> +    struct ieee80211_channel *channel = conf->chandef.chan;
> +    enum nl80211_channel_type channel_type =
> +        cfg80211_get_chandef_type(&conf->chandef);
>    struct mwl8k_cmd_tx_power *cmd;
>    int rc;
>    int i;
> @@ -2857,14 +2859,14 @@ static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
> 
>    cmd->channel = cpu_to_le16(channel->hw_value);
> 
> -    if (conf->channel_type == NL80211_CHAN_NO_HT ||
> -        conf->channel_type == NL80211_CHAN_HT20) {
> +    if (channel_type == NL80211_CHAN_NO_HT ||
> +        channel_type == NL80211_CHAN_HT20) {
>        cmd->bw = cpu_to_le16(0x2);
>    } else {
>        cmd->bw = cpu_to_le16(0x4);
> -        if (conf->channel_type == NL80211_CHAN_HT40MINUS)
> +        if (channel_type == NL80211_CHAN_HT40MINUS)
>            cmd->sub_ch = cpu_to_le16(0x3);
> -        else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
> +        else if (channel_type == NL80211_CHAN_HT40PLUS)
>            cmd->sub_ch = cpu_to_le16(0x1);
>    }
> 
> @@ -3008,7 +3010,9 @@ struct mwl8k_cmd_set_rf_channel {
> static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
>                    struct ieee80211_conf *conf)
> {
> -    struct ieee80211_channel *channel = conf->channel;
> +    struct ieee80211_channel *channel = conf->chandef.chan;
> +    enum nl80211_channel_type channel_type =
> +        cfg80211_get_chandef_type(&conf->chandef);
>    struct mwl8k_cmd_set_rf_channel *cmd;
>    int rc;
> 
> @@ -3026,12 +3030,12 @@ static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
>    else if (channel->band == IEEE80211_BAND_5GHZ)
>        cmd->channel_flags |= cpu_to_le32(0x00000004);
> 
> -    if (conf->channel_type == NL80211_CHAN_NO_HT ||
> -        conf->channel_type == NL80211_CHAN_HT20)
> +    if (channel_type == NL80211_CHAN_NO_HT ||
> +        channel_type == NL80211_CHAN_HT20)
>        cmd->channel_flags |= cpu_to_le32(0x00000080);
> -    else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
> +    else if (channel_type == NL80211_CHAN_HT40MINUS)
>        cmd->channel_flags |= cpu_to_le32(0x000001900);
> -    else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
> +    else if (channel_type == NL80211_CHAN_HT40PLUS)
>        cmd->channel_flags |= cpu_to_le32(0x000000900);
> 
>    rc = mwl8k_post_cmd(hw, &cmd->header);
> @@ -3950,7 +3954,7 @@ static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
>    memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
>    cmd->stn_id = cpu_to_le16(sta->aid);
>    cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
> -    if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
> +    if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
>        rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
>    else
>        rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
> @@ -4385,7 +4389,7 @@ static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
>    p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
>    p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
>        ((sta->ht_cap.ampdu_density & 7) << 2);
> -    if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
> +    if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
>        rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
>    else
>        rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
> @@ -4868,7 +4872,7 @@ mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
>            goto out;
>        }
> 
> -        if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
> +        if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
>            ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
>        } else {
>            ap_legacy_rates =
> @@ -4900,7 +4904,7 @@ mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
>            if (idx)
>                idx--;
> 
> -            if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
> +            if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
>                rate = mwl8k_rates_24[idx].hw_value;
>            else
>                rate = mwl8k_rates_50[idx].hw_value;
> @@ -4973,7 +4977,7 @@ mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
>        if (idx)
>            idx--;
> 
> -        if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
> +        if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
>            rate = mwl8k_rates_24[idx].hw_value;
>        else
>            rate = mwl8k_rates_50[idx].hw_value;
> @@ -5246,7 +5250,7 @@ static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->filled = SURVEY_INFO_NOISE_DBM;
>    survey->noise = priv->noise;
> 
> diff --git a/drivers/net/wireless/p54/fwio.c b/drivers/net/wireless/p54/fwio.c
> index 9ba8510..b3879fb 100644
> --- a/drivers/net/wireless/p54/fwio.c
> +++ b/drivers/net/wireless/p54/fwio.c
> @@ -402,7 +402,7 @@ int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
>    struct p54_rssi_db_entry *rssi_data;
>    unsigned int i;
>    void *entry;
> -    __le16 freq = cpu_to_le16(priv->hw->conf.channel->center_freq);
> +    __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
> 
>    skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
>                2 + sizeof(*iq_autocal) + sizeof(*body) +
> @@ -532,7 +532,7 @@ int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
> err:
>    wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
>          ieee80211_frequency_to_channel(
> -              priv->hw->conf.channel->center_freq));
> +              priv->hw->conf.chandef.chan->center_freq));
> 
>    dev_kfree_skb_any(skb);
>    return -EINVAL;
> diff --git a/drivers/net/wireless/p54/main.c b/drivers/net/wireless/p54/main.c
> index ee654a6..067e6f2 100644
> --- a/drivers/net/wireless/p54/main.c
> +++ b/drivers/net/wireless/p54/main.c
> @@ -340,7 +340,7 @@ static int p54_config(struct ieee80211_hw *dev, u32 changed)
>         * TODO: Use the LM_SCAN_TRAP to determine the current
>         * operating channel.
>         */
> -        priv->curchan = priv->hw->conf.channel;
> +        priv->curchan = priv->hw->conf.chandef.chan;
>        p54_reset_stats(priv);
>        WARN_ON(p54_fetch_statistics(priv));
>    }
> @@ -480,7 +480,7 @@ static void p54_bss_info_changed(struct ieee80211_hw *dev,
>        p54_set_edcf(priv);
>    }
>    if (changed & BSS_CHANGED_BASIC_RATES) {
> -        if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
> +        if (dev->conf.chandef.chan->band == IEEE80211_BAND_5GHZ)
>            priv->basic_rate_mask = (info->basic_rates << 4);
>        else
>            priv->basic_rate_mask = info->basic_rates;
> diff --git a/drivers/net/wireless/p54/txrx.c b/drivers/net/wireless/p54/txrx.c
> index 12f0a34..f95de0d 100644
> --- a/drivers/net/wireless/p54/txrx.c
> +++ b/drivers/net/wireless/p54/txrx.c
> @@ -354,13 +354,13 @@ static int p54_rx_data(struct p54_common *priv, struct sk_buff *skb)
>    rx_status->signal = p54_rssi_to_dbm(priv, hdr->rssi);
>    if (hdr->rate & 0x10)
>        rx_status->flag |= RX_FLAG_SHORTPRE;
> -    if (priv->hw->conf.channel->band == IEEE80211_BAND_5GHZ)
> +    if (priv->hw->conf.chandef.chan->band == IEEE80211_BAND_5GHZ)
>        rx_status->rate_idx = (rate < 4) ? 0 : rate - 4;
>    else
>        rx_status->rate_idx = rate;
> 
>    rx_status->freq = freq;
> -    rx_status->band =  priv->hw->conf.channel->band;
> +    rx_status->band =  priv->hw->conf.chandef.chan->band;
>    rx_status->antenna = hdr->antenna;
> 
>    tsf32 = le32_to_cpu(hdr->tsf32);
> diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
> index a658b4b..34456b4 100644
> --- a/drivers/net/wireless/rt2x00/rt2800lib.c
> +++ b/drivers/net/wireless/rt2x00/rt2800lib.c
> @@ -2763,7 +2763,7 @@ static void rt2800_config_txpower(struct rt2x00_dev *rt2x00dev,
> 
> void rt2800_gain_calibration(struct rt2x00_dev *rt2x00dev)
> {
> -    rt2800_config_txpower(rt2x00dev, rt2x00dev->hw->conf.channel,
> +    rt2800_config_txpower(rt2x00dev, rt2x00dev->hw->conf.chandef.chan,
>                  rt2x00dev->tx_power);
> }
> EXPORT_SYMBOL_GPL(rt2800_gain_calibration);
> @@ -2898,11 +2898,11 @@ void rt2800_config(struct rt2x00_dev *rt2x00dev,
>    if (flags & IEEE80211_CONF_CHANGE_CHANNEL) {
>        rt2800_config_channel(rt2x00dev, libconf->conf,
>                      &libconf->rf, &libconf->channel);
> -        rt2800_config_txpower(rt2x00dev, libconf->conf->channel,
> +        rt2800_config_txpower(rt2x00dev, libconf->conf->chandef.chan,
>                      libconf->conf->power_level);
>    }
>    if (flags & IEEE80211_CONF_CHANGE_POWER)
> -        rt2800_config_txpower(rt2x00dev, libconf->conf->channel,
> +        rt2800_config_txpower(rt2x00dev, libconf->conf->chandef.chan,
>                      libconf->conf->power_level);
>    if (flags & IEEE80211_CONF_CHANGE_RETRY_LIMITS)
>        rt2800_config_retry_limit(rt2x00dev, libconf);
> @@ -5563,7 +5563,7 @@ int rt2800_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
> 
>    rt2800_register_read(rt2x00dev, CH_IDLE_STA, &idle);
>    rt2800_register_read(rt2x00dev, CH_BUSY_STA, &busy);
> diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
> index 49a63e9..8cb43f8 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00config.c
> +++ b/drivers/net/wireless/rt2x00/rt2x00config.c
> @@ -184,7 +184,7 @@ static u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev,
>    /*
>     * Initialize center channel to current channel.
>     */
> -    center_channel = spec->channels[conf->channel->hw_value].channel;
> +    center_channel = spec->channels[conf->chandef.chan->hw_value].channel;
> 
>    /*
>     * Adjust center channel to HT40+ and HT40- operation.
> @@ -199,7 +199,7 @@ static u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev,
>            return i;
> 
>    WARN_ON(1);
> -    return conf->channel->hw_value;
> +    return conf->chandef.chan->hw_value;
> }
> 
> void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
> @@ -227,7 +227,7 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
>            hw_value = rt2x00ht_center_channel(rt2x00dev, conf);
>        } else {
>            clear_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
> -            hw_value = conf->channel->hw_value;
> +            hw_value = conf->chandef.chan->hw_value;
>        }
> 
>        memcpy(&libconf.rf,
> @@ -279,8 +279,8 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
>    else
>        clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
> 
> -    rt2x00dev->curr_band = conf->channel->band;
> -    rt2x00dev->curr_freq = conf->channel->center_freq;
> +    rt2x00dev->curr_band = conf->chandef.chan->band;
> +    rt2x00dev->curr_freq = conf->chandef.chan->center_freq;
>    rt2x00dev->tx_power = conf->power_level;
>    rt2x00dev->short_retry = conf->short_frame_max_tx_count;
>    rt2x00dev->long_retry = conf->long_frame_max_tx_count;
> diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
> index f95792c..f85035c 100644
> --- a/drivers/net/wireless/rt2x00/rt61pci.c
> +++ b/drivers/net/wireless/rt2x00/rt61pci.c
> @@ -847,7 +847,7 @@ static void rt61pci_config_lna_gain(struct rt2x00_dev *rt2x00dev,
>    u16 eeprom;
>    short lna_gain = 0;
> 
> -    if (libconf->conf->channel->band == IEEE80211_BAND_2GHZ) {
> +    if (libconf->conf->chandef.chan->band == IEEE80211_BAND_2GHZ) {
>        if (test_bit(CAPABILITY_EXTERNAL_LNA_BG, &rt2x00dev->cap_flags))
>            lna_gain += 14;
> 
> diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
> index 24eec66..a3387b1 100644
> --- a/drivers/net/wireless/rt2x00/rt73usb.c
> +++ b/drivers/net/wireless/rt2x00/rt73usb.c
> @@ -739,7 +739,7 @@ static void rt73usb_config_lna_gain(struct rt2x00_dev *rt2x00dev,
>    u16 eeprom;
>    short lna_gain = 0;
> 
> -    if (libconf->conf->channel->band == IEEE80211_BAND_2GHZ) {
> +    if (libconf->conf->chandef.chan->band == IEEE80211_BAND_2GHZ) {
>        if (test_bit(CAPABILITY_EXTERNAL_LNA_BG, &rt2x00dev->cap_flags))
>            lna_gain += 14;
> 
> diff --git a/drivers/net/wireless/rtl818x/rtl8180/dev.c b/drivers/net/wireless/rtl818x/rtl8180/dev.c
> index 1b3c284..91a04e2 100644
> --- a/drivers/net/wireless/rtl818x/rtl8180/dev.c
> +++ b/drivers/net/wireless/rtl818x/rtl8180/dev.c
> @@ -147,8 +147,8 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
>                signal = priv->rf->calc_rssi(agc, sq);
>            }
>            rx_status.signal = signal;
> -            rx_status.freq = dev->conf.channel->center_freq;
> -            rx_status.band = dev->conf.channel->band;
> +            rx_status.freq = dev->conf.chandef.chan->center_freq;
> +            rx_status.band = dev->conf.chandef.chan->band;
>            rx_status.mactime = le64_to_cpu(entry->tsft);
>            rx_status.flag |= RX_FLAG_MACTIME_START;
>            if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
> diff --git a/drivers/net/wireless/rtl818x/rtl8180/grf5101.c b/drivers/net/wireless/rtl818x/rtl8180/grf5101.c
> index 5ee7589..077ff92 100644
> --- a/drivers/net/wireless/rtl818x/rtl8180/grf5101.c
> +++ b/drivers/net/wireless/rtl818x/rtl8180/grf5101.c
> @@ -82,7 +82,8 @@ static void grf5101_rf_set_channel(struct ieee80211_hw *dev,
>                   struct ieee80211_conf *conf)
> {
>    struct rtl8180_priv *priv = dev->priv;
> -    int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
> +    int channel =
> +        ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
>    u32 txpw = priv->channels[channel - 1].hw_value & 0xFF;
>    u32 chan = channel - 1;
> 
> diff --git a/drivers/net/wireless/rtl818x/rtl8180/max2820.c b/drivers/net/wireless/rtl818x/rtl8180/max2820.c
> index 667b336..4715000 100644
> --- a/drivers/net/wireless/rtl818x/rtl8180/max2820.c
> +++ b/drivers/net/wireless/rtl818x/rtl8180/max2820.c
> @@ -95,7 +95,7 @@ static void max2820_rf_set_channel(struct ieee80211_hw *dev,
> {
>    struct rtl8180_priv *priv = dev->priv;
>    int channel = conf ?
> -        ieee80211_frequency_to_channel(conf->channel->center_freq) : 1;
> +        ieee80211_frequency_to_channel(conf->chandef.chan->center_freq) : 1;
>    unsigned int chan_idx = channel - 1;
>    u32 txpw = priv->channels[chan_idx].hw_value & 0xFF;
>    u32 chan = max2820_chan[chan_idx];
> diff --git a/drivers/net/wireless/rtl818x/rtl8180/rtl8225.c b/drivers/net/wireless/rtl818x/rtl8180/rtl8225.c
> index 7c4574b..cc2a541 100644
> --- a/drivers/net/wireless/rtl818x/rtl8180/rtl8225.c
> +++ b/drivers/net/wireless/rtl818x/rtl8180/rtl8225.c
> @@ -719,7 +719,8 @@ static void rtl8225_rf_set_channel(struct ieee80211_hw *dev,
>                   struct ieee80211_conf *conf)
> {
>    struct rtl8180_priv *priv = dev->priv;
> -    int chan = ieee80211_frequency_to_channel(conf->channel->center_freq);
> +    int chan =
> +        ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
> 
>    if (priv->rf->init == rtl8225_rf_init)
>        rtl8225_rf_set_tx_power(dev, chan);
> diff --git a/drivers/net/wireless/rtl818x/rtl8180/sa2400.c b/drivers/net/wireless/rtl818x/rtl8180/sa2400.c
> index 44771a62..b3ec40f 100644
> --- a/drivers/net/wireless/rtl818x/rtl8180/sa2400.c
> +++ b/drivers/net/wireless/rtl818x/rtl8180/sa2400.c
> @@ -105,7 +105,8 @@ static void sa2400_rf_set_channel(struct ieee80211_hw *dev,
>                  struct ieee80211_conf *conf)
> {
>    struct rtl8180_priv *priv = dev->priv;
> -    int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
> +    int channel =
> +        ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
>    u32 txpw = priv->channels[channel - 1].hw_value & 0xFF;
>    u32 chan = sa2400_chan[channel - 1];
> 
> diff --git a/drivers/net/wireless/rtl818x/rtl8187/dev.c b/drivers/net/wireless/rtl818x/rtl8187/dev.c
> index 4574bd2..f49220e 100644
> --- a/drivers/net/wireless/rtl818x/rtl8187/dev.c
> +++ b/drivers/net/wireless/rtl818x/rtl8187/dev.c
> @@ -379,8 +379,8 @@ static void rtl8187_rx_cb(struct urb *urb)
>    rate = (flags >> 20) & 0xF;
>    skb_trim(skb, flags & 0x0FFF);
>    rx_status.rate_idx = rate;
> -    rx_status.freq = dev->conf.channel->center_freq;
> -    rx_status.band = dev->conf.channel->band;
> +    rx_status.freq = dev->conf.chandef.chan->center_freq;
> +    rx_status.band = dev->conf.chandef.chan->band;
>    rx_status.flag |= RX_FLAG_MACTIME_START;
>    if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
>        rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
> diff --git a/drivers/net/wireless/rtl818x/rtl8187/rtl8225.c b/drivers/net/wireless/rtl818x/rtl8187/rtl8225.c
> index 908903f..f0bf35f 100644
> --- a/drivers/net/wireless/rtl818x/rtl8187/rtl8225.c
> +++ b/drivers/net/wireless/rtl818x/rtl8187/rtl8225.c
> @@ -905,7 +905,8 @@ static void rtl8225_rf_set_channel(struct ieee80211_hw *dev,
>                   struct ieee80211_conf *conf)
> {
>    struct rtl8187_priv *priv = dev->priv;
> -    int chan = ieee80211_frequency_to_channel(conf->channel->center_freq);
> +    int chan =
> +        ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
> 
>    if (priv->rf->init == rtl8225_rf_init)
>        rtl8225_rf_set_tx_power(dev, chan);
> diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
> index 99c5cea..0e7866d 100644
> --- a/drivers/net/wireless/rtlwifi/base.c
> +++ b/drivers/net/wireless/rtlwifi/base.c
> @@ -691,7 +691,7 @@ int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
>    int rate_idx;
> 
>    if (false == isht) {
> -        if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
> +        if (IEEE80211_BAND_2GHZ == hw->conf.chandef.chan->band) {
>            switch (desc_rate) {
>            case DESC92_RATE1M:
>                rate_idx = 0;
> @@ -1365,7 +1365,7 @@ int rtl_send_smps_action(struct ieee80211_hw *hw,
>        rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
> 
>        info->control.rates[0].idx = 0;
> -        info->band = hw->conf.channel->band;
> +        info->band = hw->conf.chandef.chan->band;
>        rtlpriv->intf_ops->adapter_tx(hw, sta, skb, &tcb_desc);
>    }
> err_free:
> diff --git a/drivers/net/wireless/rtlwifi/core.c b/drivers/net/wireless/rtlwifi/core.c
> index b5a7a26..64a41ec 100644
> --- a/drivers/net/wireless/rtlwifi/core.c
> +++ b/drivers/net/wireless/rtlwifi/core.c
> @@ -320,7 +320,7 @@ static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
>    }
> 
>    if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
> -        struct ieee80211_channel *channel = hw->conf.channel;
> +        struct ieee80211_channel *channel = hw->conf.chandef.chan;
>        u8 wide_chan = (u8) channel->hw_value;
> 
>        /*
> @@ -332,7 +332,7 @@ static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
>         *info for cisco1253 bw20, so we modify
>         *it here based on UPPER & LOWER
>         */
> -        switch (hw->conf.channel_type) {
> +        switch (cfg80211_get_chandef_type(&hw->conf.chandef)) {
>        case NL80211_CHAN_HT20:
>        case NL80211_CHAN_NO_HT:
>            /* SC */
> @@ -390,7 +390,7 @@ static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
>        rtlpriv->cfg->ops->switch_channel(hw);
>        rtlpriv->cfg->ops->set_channel_access(hw);
>        rtlpriv->cfg->ops->set_bw_mode(hw,
> -                           hw->conf.channel_type);
> +                cfg80211_get_chandef_type(&hw->conf.chandef));
>    }
> 
>    mutex_unlock(&rtlpriv->locks.conf_mutex);
> diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
> index b9b1a6e..27e4ebd 100644
> --- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
> +++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
> @@ -544,8 +544,8 @@ bool rtl92ce_rx_query_desc(struct ieee80211_hw *hw,
>    stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
>    stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
> 
> -    rx_status->freq = hw->conf.channel->center_freq;
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
> 
>    if (GET_RX_DESC_CRC32(pdesc))
>        rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
> diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
> index b6222ee..f0dada5 100644
> --- a/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
> +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
> @@ -324,8 +324,8 @@ bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
>                   && (GET_RX_DESC_FAGGR(pdesc) == 1));
>    stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
>    stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
> -    rx_status->freq = hw->conf.channel->center_freq;
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
>    if (GET_RX_DESC_CRC32(pdesc))
>        rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
>    if (!GET_RX_DESC_SWDEC(pdesc))
> @@ -395,8 +395,8 @@ static void _rtl_rx_process(struct ieee80211_hw *hw, struct sk_buff *skb)
>    stats.rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(rxdesc);
>    /* TODO: is center_freq changed when doing scan? */
>    /* TODO: Shall we add protection or just skip those two step? */
> -    rx_status->freq = hw->conf.channel->center_freq;
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
>    if (GET_RX_DESC_CRC32(rxdesc))
>        rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
>    if (!GET_RX_DESC_SWDEC(rxdesc))
> diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
> index 941080e..b8ec718 100644
> --- a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
> +++ b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
> @@ -499,8 +499,8 @@ bool rtl92de_rx_query_desc(struct ieee80211_hw *hw,    struct rtl_stats *stats,
>                     && (GET_RX_DESC_FAGGR(pdesc) == 1));
>    stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
>    stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
> -    rx_status->freq = hw->conf.channel->center_freq;
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
>    if (GET_RX_DESC_CRC32(pdesc))
>        rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
>    if (!GET_RX_DESC_SWDEC(pdesc))
> diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
> index 7b0a2e7..0b074f1 100644
> --- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
> +++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
> @@ -538,8 +538,8 @@ bool rtl92se_rx_query_desc(struct ieee80211_hw *hw, struct rtl_stats *stats,
>    if (stats->hwerror)
>        return false;
> 
> -    rx_status->freq = hw->conf.channel->center_freq;
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
> 
>    hdr = (struct ieee80211_hdr *)(skb->data + stats->rx_drvinfo_size
>          + stats->rx_bufshift);
> diff --git a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
> index ac08129..601261d 100644
> --- a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
> +++ b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
> @@ -304,8 +304,8 @@ bool rtl8723ae_rx_query_desc(struct ieee80211_hw *hw,
> 
>    status->is_cck = RTL8723E_RX_HAL_IS_CCK_RATE(status->rate);
> 
> -    rx_status->freq = hw->conf.channel->center_freq;
> -    rx_status->band = hw->conf.channel->band;
> +    rx_status->freq = hw->conf.chandef.chan->center_freq;
> +    rx_status->band = hw->conf.chandef.chan->band;
> 
>    hdr = (struct ieee80211_hdr *)(skb->data + status->rx_drvinfo_size
>        + status->rx_bufshift);
> diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
> index bbbf68c..3291ffa 100644
> --- a/drivers/net/wireless/ti/wl1251/main.c
> +++ b/drivers/net/wireless/ti/wl1251/main.c
> @@ -572,7 +572,8 @@ static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
>    struct ieee80211_conf *conf = &hw->conf;
>    int channel, ret = 0;
> 
> -    channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
> +    channel = ieee80211_frequency_to_channel(
> +            conf->chandef.chan->center_freq);
> 
>    wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
>             channel,
> @@ -1223,7 +1224,7 @@ static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->filled = SURVEY_INFO_NOISE_DBM;
>    survey->noise = wl->noise;
> 
> diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
> index a9f7041..c26cb09 100644
> --- a/drivers/net/wireless/ti/wlcore/main.c
> +++ b/drivers/net/wireless/ti/wlcore/main.c
> @@ -4474,7 +4474,7 @@ static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
>    if (idx != 0)
>        return -ENOENT;
> 
> -    survey->channel = conf->channel;
> +    survey->channel = conf->chandef.chan;
>    survey->filled = 0;
>    return 0;
> }
> diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
> index 114364b..c6208a7 100644
> --- a/drivers/net/wireless/zd1211rw/zd_mac.c
> +++ b/drivers/net/wireless/zd1211rw/zd_mac.c
> @@ -1156,10 +1156,10 @@ static int zd_op_config(struct ieee80211_hw *hw, u32 changed)
>    struct ieee80211_conf *conf = &hw->conf;
> 
>    spin_lock_irq(&mac->lock);
> -    mac->channel = conf->channel->hw_value;
> +    mac->channel = conf->chandef.chan->hw_value;
>    spin_unlock_irq(&mac->lock);
> 
> -    return zd_chip_set_channel(&mac->chip, conf->channel->hw_value);
> +    return zd_chip_set_channel(&mac->chip, conf->chandef.chan->hw_value);
> }
> 
> static void zd_beacon_done(struct zd_mac *mac)
> diff --git a/include/net/mac80211.h b/include/net/mac80211.h
> index 23a275a..00390fb 100644
> --- a/include/net/mac80211.h
> +++ b/include/net/mac80211.h
> @@ -974,8 +974,7 @@ enum ieee80211_smps_mode {
>  * @power_level: requested transmit power (in dBm), backward compatibility
>  *    value only that is set to the minimum of all interfaces
>  *
> - * @channel: the channel to tune to
> - * @channel_type: the channel (HT) type
> + * @chandef: the channel to tune to
>  * @radar_enabled: whether radar detection is enabled
>  *
>  * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame
> @@ -1001,8 +1000,7 @@ struct ieee80211_conf {
> 
>    u8 long_frame_max_tx_count, short_frame_max_tx_count;
> 
> -    struct ieee80211_channel *channel;
> -    enum nl80211_channel_type channel_type;
> +    struct cfg80211_chan_def chandef;
>    bool radar_enabled;
>    enum ieee80211_smps_mode smps_mode;
> };
> @@ -4216,31 +4214,33 @@ void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
> static inline bool
> conf_is_ht20(struct ieee80211_conf *conf)
> {
> -    return conf->channel_type == NL80211_CHAN_HT20;
> +    return conf->chandef.width == NL80211_CHAN_WIDTH_20;
> }
> 
> static inline bool
> conf_is_ht40_minus(struct ieee80211_conf *conf)
> {
> -    return conf->channel_type == NL80211_CHAN_HT40MINUS;
> +    return conf->chandef.width == NL80211_CHAN_WIDTH_40 &&
> +           conf->chandef.center_freq1 < conf->chandef.chan->center_freq;
> }
> 
> static inline bool
> conf_is_ht40_plus(struct ieee80211_conf *conf)
> {
> -    return conf->channel_type == NL80211_CHAN_HT40PLUS;
> +    return conf->chandef.width == NL80211_CHAN_WIDTH_40 &&
> +           conf->chandef.center_freq1 > conf->chandef.chan->center_freq;
> }
> 
> static inline bool
> conf_is_ht40(struct ieee80211_conf *conf)
> {
> -    return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf);
> +    return conf->chandef.width == NL80211_CHAN_WIDTH_40;
> }
> 
> static inline bool
> conf_is_ht(struct ieee80211_conf *conf)
> {
> -    return conf->channel_type != NL80211_CHAN_NO_HT;
> +    return conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT;
> }
> 
> static inline enum nl80211_iftype
> diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
> index 50aaf25..6e43feb 100644
> --- a/net/mac80211/cfg.c
> +++ b/net/mac80211/cfg.c
> @@ -805,8 +805,7 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
>                    IEEE80211_CHANCTX_EXCLUSIVE);
>        }
>    } else if (local->open_count == local->monitors) {
> -        local->_oper_channel = chandef->chan;
> -        local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
> +        local->_oper_chandef = *chandef;
>        ieee80211_hw_config(local, 0);
>    }
> 
> @@ -3373,9 +3372,7 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
>        if (local->use_chanctx)
>            *chandef = local->monitor_chandef;
>        else
> -            cfg80211_chandef_create(chandef,
> -                        local->_oper_channel,
> -                        local->_oper_channel_type);
> +            *chandef = local->_oper_chandef;
>        ret = 0;
>    }
>    rcu_read_unlock();
> diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
> index 78c0d90..8024874 100644
> --- a/net/mac80211/chan.c
> +++ b/net/mac80211/chan.c
> @@ -22,7 +22,7 @@ static void ieee80211_change_chanctx(struct ieee80211_local *local,
>    drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_WIDTH);
> 
>    if (!local->use_chanctx) {
> -        local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
> +        local->_oper_chandef = *chandef;
>        ieee80211_hw_config(local, 0);
>    }
> }
> @@ -77,9 +77,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
>    ctx->mode = mode;
> 
>    if (!local->use_chanctx) {
> -        local->_oper_channel_type =
> -            cfg80211_get_chandef_type(chandef);
> -        local->_oper_channel = chandef->chan;
> +        local->_oper_chandef = *chandef;
>        ieee80211_hw_config(local, 0);
>    } else {
>        err = drv_add_chanctx(local, ctx);
> @@ -106,7 +104,10 @@ static void ieee80211_free_chanctx(struct ieee80211_local *local,
>    WARN_ON_ONCE(ctx->refcount != 0);
> 
>    if (!local->use_chanctx) {
> -        local->_oper_channel_type = NL80211_CHAN_NO_HT;
> +        struct cfg80211_chan_def *chandef = &local->_oper_chandef;
> +        chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
> +        chandef->center_freq1 = chandef->chan->center_freq;
> +        chandef->center_freq2 = 0;
>        ieee80211_hw_config(local, 0);
>    } else {
>        drv_remove_chanctx(local, ctx);
> diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
> index c7f8b8b..f9782f0 100644
> --- a/net/mac80211/ieee80211_i.h
> +++ b/net/mac80211/ieee80211_i.h
> @@ -1021,8 +1021,7 @@ struct ieee80211_local {
>    struct ieee80211_sub_if_data __rcu *scan_sdata;
>    struct ieee80211_channel *csa_channel;
>    /* For backward compatibility only -- do not use */
> -    struct ieee80211_channel *_oper_channel;
> -    enum nl80211_channel_type _oper_channel_type;
> +    struct cfg80211_chan_def _oper_chandef;
> 
>    /* Temporary remain-on-channel for off-channel operations */
>    struct ieee80211_channel *tmp_channel;
> diff --git a/net/mac80211/main.c b/net/mac80211/main.c
> index b0d2868..a16b037 100644
> --- a/net/mac80211/main.c
> +++ b/net/mac80211/main.c
> @@ -95,42 +95,47 @@ static void ieee80211_reconfig_filter(struct work_struct *work)
> static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
> {
>    struct ieee80211_sub_if_data *sdata;
> -    struct ieee80211_channel *chan;
> +    struct cfg80211_chan_def chandef = {};
>    u32 changed = 0;
>    int power;
> -    enum nl80211_channel_type channel_type;
>    u32 offchannel_flag;
> 
>    offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
> +
>    if (local->scan_channel) {
> -        chan = local->scan_channel;
> +        chandef.chan = local->scan_channel;
>        /* If scanning on oper channel, use whatever channel-type
>         * is currently in use.
>         */
> -        if (chan == local->_oper_channel)
> -            channel_type = local->_oper_channel_type;
> -        else
> -            channel_type = NL80211_CHAN_NO_HT;
> +        if (chandef.chan == local->_oper_chandef.chan) {
> +            chandef = local->_oper_chandef;
> +        } else {
> +            chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
> +            chandef.center_freq1 = chandef.chan->center_freq;
> +        }
>    } else if (local->tmp_channel) {
> -        chan = local->tmp_channel;
> -        channel_type = NL80211_CHAN_NO_HT;
> -    } else {
> -        chan = local->_oper_channel;
> -        channel_type = local->_oper_channel_type;
> -    }
> -
> -    if (chan != local->_oper_channel ||
> -        channel_type != local->_oper_channel_type)
> +        chandef.chan = local->tmp_channel;
> +        chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
> +        chandef.center_freq1 = chandef.chan->center_freq;
> +    } else
> +        chandef = local->_oper_chandef;
> +
> +    WARN(!cfg80211_chandef_valid(&chandef),
> +         "control:%d MHz width:%d center: %d/%d MHz",
> +         chandef.chan->center_freq, chandef.width,
> +         chandef.center_freq1, chandef.center_freq2);
> +
> +    if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
>        local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
>    else
>        local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
> 
>    offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
> 
> -    if (offchannel_flag || chan != local->hw.conf.channel ||
> -        channel_type != local->hw.conf.channel_type) {
> -        local->hw.conf.channel = chan;
> -        local->hw.conf.channel_type = channel_type;
> +    if (offchannel_flag ||
> +        !cfg80211_chandef_identical(&local->hw.conf.chandef,
> +                    &local->_oper_chandef)) {
> +        local->hw.conf.chandef = chandef;
>        changed |= IEEE80211_CONF_CHANGE_CHANNEL;
>    }
> 
> @@ -146,7 +151,7 @@ static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
>        changed |= IEEE80211_CONF_CHANGE_SMPS;
>    }
> 
> -    power = chan->max_power;
> +    power = chandef.chan->max_power;
> 
>    rcu_read_lock();
>    list_for_each_entry_rcu(sdata, &local->interfaces, list) {
> @@ -740,11 +745,15 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
>        sband = local->hw.wiphy->bands[band];
>        if (!sband)
>            continue;
> -        if (!local->use_chanctx && !local->_oper_channel) {
> +        if (!local->use_chanctx && !local->_oper_chandef.chan) {
>            /* init channel we're on */
> -            local->hw.conf.channel =
> -            local->_oper_channel = &sband->channels[0];
> -            local->hw.conf.channel_type = NL80211_CHAN_NO_HT;
> +            struct cfg80211_chan_def chandef = {
> +                .chan = &sband->channels[0],
> +                .width = NL80211_CHAN_NO_HT,
> +                .center_freq1 = sband->channels[0].center_freq,
> +                .center_freq2 = 0
> +            };
> +            local->hw.conf.chandef = local->_oper_chandef = chandef;
>        }
>        cfg80211_chandef_create(&local->monitor_chandef,
>                    &sband->channels[0],
> diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
> index 9958cb7..237e2ef 100644
> --- a/net/mac80211/mlme.c
> +++ b/net/mac80211/mlme.c
> @@ -988,6 +988,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
> {
>    struct ieee80211_sub_if_data *sdata =
>        container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
> +    struct ieee80211_local *local = sdata->local;
>    struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
> 
>    if (!ieee80211_sdata_running(sdata))
> @@ -997,21 +998,30 @@ static void ieee80211_chswitch_work(struct work_struct *work)
>    if (!ifmgd->associated)
>        goto out;
> 
> -    sdata->local->_oper_channel = sdata->local->csa_channel;
> -    if (!sdata->local->ops->channel_switch) {
> +    /*
> +     * FIXME: Here we are downgrading to NL80211_CHAN_WIDTH_20_NOHT
> +     * and don't adjust our ht/vht settings
> +     * This is wrong - we should behave according to the CSA params
> +     */
> +    local->_oper_chandef.chan = local->csa_channel;
> +    local->_oper_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
> +    local->_oper_chandef.center_freq1 =
> +        local->_oper_chandef.chan->center_freq;
> +    local->_oper_chandef.center_freq2 = 0;
> +
> +    if (!local->ops->channel_switch) {
>        /* call "hw_config" only if doing sw channel switch */
> -        ieee80211_hw_config(sdata->local,
> -            IEEE80211_CONF_CHANGE_CHANNEL);
> +        ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
>    } else {
>        /* update the device channel directly */
> -        sdata->local->hw.conf.channel = sdata->local->_oper_channel;
> +        local->hw.conf.chandef = local->_oper_chandef;
>    }
> 
>    /* XXX: shouldn't really modify cfg80211-owned data! */
> -    ifmgd->associated->channel = sdata->local->_oper_channel;
> +    ifmgd->associated->channel = local->_oper_chandef.chan;
> 
>    /* XXX: wait for a beacon first? */
> -    ieee80211_wake_queues_by_reason(&sdata->local->hw,
> +    ieee80211_wake_queues_by_reason(&local->hw,
>                    IEEE80211_MAX_QUEUE_MAP,
>                    IEEE80211_QUEUE_STOP_REASON_CSA);
>  out:
> diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
> index cb34cbb..581764f 100644
> --- a/net/mac80211/scan.c
> +++ b/net/mac80211/scan.c
> @@ -384,7 +384,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
> {
>    int i;
>    struct ieee80211_sub_if_data *sdata;
> -    enum ieee80211_band band = local->hw.conf.channel->band;
> +    enum ieee80211_band band = local->hw.conf.chandef.chan->band;
>    u32 tx_flags;
> 
>    tx_flags = IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
> @@ -401,7 +401,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
>            local->scan_req->ssids[i].ssid_len,
>            local->scan_req->ie, local->scan_req->ie_len,
>            local->scan_req->rates[band], false,
> -            tx_flags, local->hw.conf.channel, true);
> +            tx_flags, local->hw.conf.chandef.chan, true);
> 
>    /*
>     * After sending probe requests, wait for probe responses
> @@ -467,7 +467,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
>    if (local->ops->hw_scan) {
>        __set_bit(SCAN_HW_SCANNING, &local->scanning);
>    } else if ((req->n_channels == 1) &&
> -           (req->channels[0] == local->_oper_channel)) {
> +           (req->channels[0] == local->_oper_chandef.chan)) {
>        /*
>         * If we are scanning only on the operating channel
>         * then we do not need to stop normal activities
> diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
> index d79e374..8286dce 100644
> --- a/net/mac80211/trace.h
> +++ b/net/mac80211/trace.h
> @@ -28,27 +28,27 @@
> #define VIF_PR_FMT    " vif:%s(%d%s)"
> #define VIF_PR_ARG    __get_str(vif_name), __entry->vif_type, __entry->p2p ? "/p2p" : ""
> 
> -#define CHANDEF_ENTRY    __field(u32, control_freq)                \
> -            __field(u32, chan_width)                \
> -            __field(u32, center_freq1)                \
> +#define CHANDEF_ENTRY    __field(u32, control_freq)                    \
> +            __field(u32, chan_width)                    \
> +            __field(u32, center_freq1)                    \
>            __field(u32, center_freq2)
> -#define CHANDEF_ASSIGN(c)                            \
> -            __entry->control_freq = (c)->chan->center_freq;        \
> -            __entry->chan_width = (c)->width;            \
> -            __entry->center_freq1 = (c)->center_freq1;        \
> +#define CHANDEF_ASSIGN(c)                                \
> +            __entry->control_freq = (c)->chan ? (c)->chan->center_freq : 0;    \
> +            __entry->chan_width = (c)->width;                \
> +            __entry->center_freq1 = (c)->center_freq1;            \
>            __entry->center_freq2 = (c)->center_freq2;
> #define CHANDEF_PR_FMT    " control:%d MHz width:%d center: %d/%d MHz"
> -#define CHANDEF_PR_ARG    __entry->control_freq, __entry->chan_width,        \
> +#define CHANDEF_PR_ARG    __entry->control_freq, __entry->chan_width,            \
>            __entry->center_freq1, __entry->center_freq2
> 
> -#define CHANCTX_ENTRY    CHANDEF_ENTRY                        \
> -            __field(u8, rx_chains_static)                \
> +#define CHANCTX_ENTRY    CHANDEF_ENTRY                            \
> +            __field(u8, rx_chains_static)                    \
>            __field(u8, rx_chains_dynamic)
> -#define CHANCTX_ASSIGN    CHANDEF_ASSIGN(&ctx->conf.def)                \
> -            __entry->rx_chains_static = ctx->conf.rx_chains_static;    \
> +#define CHANCTX_ASSIGN    CHANDEF_ASSIGN(&ctx->conf.def)                    \
> +            __entry->rx_chains_static = ctx->conf.rx_chains_static;        \
>            __entry->rx_chains_dynamic = ctx->conf.rx_chains_dynamic
> #define CHANCTX_PR_FMT    CHANDEF_PR_FMT " chains:%d/%d"
> -#define CHANCTX_PR_ARG    CHANDEF_PR_ARG,                        \
> +#define CHANCTX_PR_ARG    CHANDEF_PR_ARG,                            \
>            __entry->rx_chains_static, __entry->rx_chains_dynamic
> 
> 
> @@ -286,8 +286,7 @@ TRACE_EVENT(drv_config,
>        __field(u16, listen_interval)
>        __field(u8, long_frame_max_tx_count)
>        __field(u8, short_frame_max_tx_count)
> -        __field(int, center_freq)
> -        __field(int, channel_type)
> +        CHANDEF_ENTRY
>        __field(int, smps)
>    ),
> 
> @@ -303,15 +302,13 @@ TRACE_EVENT(drv_config,
>            local->hw.conf.long_frame_max_tx_count;
>        __entry->short_frame_max_tx_count =
>            local->hw.conf.short_frame_max_tx_count;
> -        __entry->center_freq = local->hw.conf.channel ?
> -                    local->hw.conf.channel->center_freq : 0;
> -        __entry->channel_type = local->hw.conf.channel_type;
> +        CHANDEF_ASSIGN(&local->hw.conf.chandef)
>        __entry->smps = local->hw.conf.smps_mode;
>    ),
> 
>    TP_printk(
> -        LOCAL_PR_FMT " ch:%#x freq:%d",
> -        LOCAL_PR_ARG, __entry->changed, __entry->center_freq
> +        LOCAL_PR_FMT " ch:%#x" CHANDEF_PR_FMT,
> +        LOCAL_PR_ARG, __entry->changed, CHANDEF_PR_ARG
>    )
> );
> 
> diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
> index 4a83d8d..aad0bf5 100644
> --- a/net/mac80211/tx.c
> +++ b/net/mac80211/tx.c
> @@ -1709,7 +1709,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
>    if (chanctx_conf)
>        chan = chanctx_conf->def.chan;
>    else if (!local->use_chanctx)
> -        chan = local->_oper_channel;
> +        chan = local->_oper_chandef.chan;
>    else
>        goto fail_rcu;
> 
> @@ -1843,7 +1843,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
>         * This is the exception! WDS style interfaces are prohibited
>         * when channel contexts are in used so this must be valid
>         */
> -        band = local->hw.conf.channel->band;
> +        band = local->hw.conf.chandef.chan->band;
>        break;
> #ifdef CONFIG_MAC80211_MESH
>    case NL80211_IFTYPE_MESH_POINT:
> diff --git a/net/mac80211/util.c b/net/mac80211/util.c
> index 90cc2b8..1734cd2 100644
> --- a/net/mac80211/util.c
> +++ b/net/mac80211/util.c
> @@ -2171,8 +2171,7 @@ void ieee80211_dfs_radar_detected_work(struct work_struct *work)
>        /* currently not handled */
>        WARN_ON(1);
>    else {
> -        cfg80211_chandef_create(&chandef, local->hw.conf.channel,
> -                    local->hw.conf.channel_type);
> +        chandef = local->hw.conf.chandef;
>        cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);
>    }
> }
> -- 
> 1.7.9.dirty
> 
> --
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