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mwifiex: fix incorrect ht capability problem

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IEEE80211_CHAN_NO_HT40PLUS and IEEE80211_CHAN_NO_HT40PLUS channel
flags tell if HT40 operation is allowed on a channel or not.

This patch ensures ht_capability information is modified
accordingly so that we don't end up creating a HT40 connection
when it's not allowed for current regulatory domain.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Amitkumar Karwar 2016-04-11 07:52:41 -07:00 committed by Kalle Valo
parent c3ec0ff642
commit bcc920e8f0
1 changed files with 43 additions and 1 deletions
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44
drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
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@ -146,6 +146,7 @@ int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
size_t beacon_ie_len;
struct mwifiex_bss_priv *bss_priv = (void *)bss->priv;
const struct cfg80211_bss_ies *ies;
int ret;
rcu_read_lock();
ies = rcu_dereference(bss->ies);
@ -189,7 +190,48 @@ int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_SPECTRUM_MGMT)
bss_desc->sensed_11h = true;
return mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
ret = mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
if (ret)
return ret;
/* Update HT40 capability based on current channel information */
if (bss_desc->bcn_ht_oper && bss_desc->bcn_ht_cap) {
u8 ht_param = bss_desc->bcn_ht_oper->ht_param;
u8 radio = mwifiex_band_to_radio_type(bss_desc->bss_band);
struct ieee80211_supported_band *sband =
priv->wdev.wiphy->bands[radio];
int freq = ieee80211_channel_to_frequency(bss_desc->channel,
radio);
struct ieee80211_channel *chan =
ieee80211_get_channel(priv->adapter->wiphy, freq);
switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) {
sband->ht_cap.cap &=
~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40;
} else {
sband->ht_cap.cap |=
IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_SGI_40;
}
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) {
sband->ht_cap.cap &=
~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40;
} else {
sband->ht_cap.cap |=
IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_SGI_40;
}
break;
}
}
return 0;
}
void mwifiex_dnld_txpwr_table(struct mwifiex_private *priv)