diff options
Diffstat (limited to 'net/mac80211/ieee80211_sta.c')
| -rw-r--r-- | net/mac80211/ieee80211_sta.c | 98 |
1 files changed, 66 insertions, 32 deletions
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c index 91b545c144c..ba2bf8f0a34 100644 --- a/net/mac80211/ieee80211_sta.c +++ b/net/mac80211/ieee80211_sta.c @@ -76,33 +76,36 @@ static int ieee80211_sta_config_auth(struct net_device *dev, /* Parsed Information Elements */ struct ieee802_11_elems { + /* pointers to IEs */ u8 *ssid; - u8 ssid_len; u8 *supp_rates; - u8 supp_rates_len; u8 *fh_params; - u8 fh_params_len; u8 *ds_params; - u8 ds_params_len; u8 *cf_params; - u8 cf_params_len; u8 *tim; - u8 tim_len; u8 *ibss_params; - u8 ibss_params_len; u8 *challenge; - u8 challenge_len; u8 *wpa; - u8 wpa_len; u8 *rsn; - u8 rsn_len; u8 *erp_info; - u8 erp_info_len; u8 *ext_supp_rates; - u8 ext_supp_rates_len; u8 *wmm_info; - u8 wmm_info_len; u8 *wmm_param; + + /* length of them, respectively */ + u8 ssid_len; + u8 supp_rates_len; + u8 fh_params_len; + u8 ds_params_len; + u8 cf_params_len; + u8 tim_len; + u8 ibss_params_len; + u8 challenge_len; + u8 wpa_len; + u8 rsn_len; + u8 erp_info_len; + u8 ext_supp_rates_len; + u8 wmm_info_len; u8 wmm_param_len; }; @@ -311,6 +314,25 @@ static void ieee80211_sta_wmm_params(struct net_device *dev, } +static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + int use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; + + if (use_protection != sdata->use_protection) { + if (net_ratelimit()) { + printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" + MAC_FMT ")\n", + dev->name, + use_protection ? "enabled" : "disabled", + MAC_ARG(ifsta->bssid)); + } + sdata->use_protection = use_protection; + } +} + + static void ieee80211_sta_send_associnfo(struct net_device *dev, struct ieee80211_if_sta *ifsta) { @@ -366,6 +388,7 @@ static void ieee80211_set_associated(struct net_device *dev, struct ieee80211_if_sta *ifsta, int assoc) { union iwreq_data wrqu; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (ifsta->associated == assoc) return; @@ -374,9 +397,18 @@ static void ieee80211_set_associated(struct net_device *dev, if (assoc) { struct ieee80211_sub_if_data *sdata; + struct ieee80211_sta_bss *bss; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->type != IEEE80211_IF_TYPE_STA) return; + + bss = ieee80211_rx_bss_get(dev, ifsta->bssid); + if (bss) { + if (bss->has_erp_value) + ieee80211_handle_erp_ie(dev, bss->erp_value); + ieee80211_rx_bss_put(dev, bss); + } + netif_carrier_on(dev); ifsta->prev_bssid_set = 1; memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); @@ -384,6 +416,7 @@ static void ieee80211_set_associated(struct net_device *dev, ieee80211_sta_send_associnfo(dev, ifsta); } else { netif_carrier_off(dev); + sdata->use_protection = 0; memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); } wrqu.ap_addr.sa_family = ARPHRD_ETHER; @@ -1174,6 +1207,18 @@ static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev, return; } + /* it probably doesn't, but if the frame includes an ERP value then + * update our stored copy */ + if (elems.erp_info && elems.erp_info_len >= 1) { + struct ieee80211_sta_bss *bss + = ieee80211_rx_bss_get(dev, ifsta->bssid); + if (bss) { + bss->erp_value = elems.erp_info[0]; + bss->has_erp_value = 1; + ieee80211_rx_bss_put(dev, bss); + } + } + printk(KERN_DEBUG "%s: associated\n", dev->name); ifsta->aid = aid; ifsta->ap_capab = capab_info; @@ -1496,6 +1541,12 @@ static void ieee80211_rx_bss_info(struct net_device *dev, return; } + /* save the ERP value so that it is available at association time */ + if (elems.erp_info && elems.erp_info_len >= 1) { + bss->erp_value = elems.erp_info[0]; + bss->has_erp_value = 1; + } + bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); if (elems.ssid && elems.ssid_len <= IEEE80211_MAX_SSID_LEN) { @@ -1611,10 +1662,8 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, size_t len, struct ieee80211_rx_status *rx_status) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_sub_if_data *sdata; struct ieee80211_if_sta *ifsta; - int use_protection; size_t baselen; struct ieee802_11_elems elems; @@ -1638,23 +1687,8 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, &elems) == ParseFailed) return; - use_protection = 0; - if (elems.erp_info && elems.erp_info_len >= 1) { - use_protection = - (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0; - } - - if (use_protection != !!ifsta->use_protection) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" - MAC_FMT ")\n", - dev->name, - use_protection ? "enabled" : "disabled", - MAC_ARG(ifsta->bssid)); - } - ifsta->use_protection = use_protection ? 1 : 0; - local->cts_protect_erp_frames = use_protection; - } + if (elems.erp_info && elems.erp_info_len >= 1) + ieee80211_handle_erp_ie(dev, elems.erp_info[0]); if (elems.wmm_param && ifsta->wmm_enabled) { ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |