diff options
| -rw-r--r-- | net/mac80211/mlme.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index bdaab1391d4..83e8b497e6d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -350,14 +350,12 @@ static void ieee80211_sta_wmm_params(struct net_device *dev, } } - -static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, - u8 erp_value) +static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, + bool use_protection, + bool use_short_preamble) { struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; struct ieee80211_if_sta *ifsta = &sdata->u.sta; - bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; - bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; DECLARE_MAC_BUF(mac); u32 changed = 0; @@ -388,6 +386,32 @@ static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, return changed; } +static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, + u8 erp_value) +{ + bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; + bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; + + return ieee80211_handle_protect_preamb(sdata, + use_protection, use_short_preamble); +} + +static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta_bss *bss) +{ + u32 changed = 0; + + if (bss->has_erp_value) + changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); + else { + u16 capab = bss->capability; + changed |= ieee80211_handle_protect_preamb(sdata, false, + (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); + } + + return changed; +} + int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, struct ieee80211_ht_info *ht_info) { @@ -511,9 +535,7 @@ static void ieee80211_set_associated(struct net_device *dev, sdata->bss_conf.beacon_int = bss->beacon_int; sdata->bss_conf.timestamp = bss->timestamp; - if (bss->has_erp_value) - changed |= ieee80211_handle_erp_ie( - sdata, bss->erp_value); + changed |= ieee80211_handle_bss_capability(sdata, bss); ieee80211_rx_bss_put(dev, bss); } @@ -2777,6 +2799,11 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, if (elems.erp_info && elems.erp_info_len >= 1) changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); + else { + u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); + changed |= ieee80211_handle_protect_preamb(sdata, false, + (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); + } if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |