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mac80211: proper bss private data handling
cfg80211 offers private data for each BSS struct, which mac80211 uses. However, mac80211 uses internal and external (cfg80211) BSS pointers interchangeably and has a hack to put the cfg80211 bss struct into the private struct. Remove this hack, properly converting between the pointers wherever necessary. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
John W. Linville
parent
8e664fb3fd
commit
0c1ad2cac1
@ -1343,7 +1343,7 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
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return 0;
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}
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ap = sdata->u.mgd.associated->cbss.bssid;
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ap = sdata->u.mgd.associated->bssid;
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if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
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if (sdata->u.mgd.powersave)
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@ -187,15 +187,17 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
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static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_bss *bss)
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{
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struct cfg80211_bss *cbss =
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container_of((void *)bss, struct cfg80211_bss, priv);
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struct ieee80211_supported_band *sband;
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u32 basic_rates;
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int i, j;
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u16 beacon_int = bss->cbss.beacon_interval;
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u16 beacon_int = cbss->beacon_interval;
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if (beacon_int < 10)
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beacon_int = 10;
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sband = sdata->local->hw.wiphy->bands[bss->cbss.channel->band];
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sband = sdata->local->hw.wiphy->bands[cbss->channel->band];
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basic_rates = 0;
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@ -212,12 +214,12 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
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}
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}
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__ieee80211_sta_join_ibss(sdata, bss->cbss.bssid,
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__ieee80211_sta_join_ibss(sdata, cbss->bssid,
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beacon_int,
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bss->cbss.channel,
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cbss->channel,
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basic_rates,
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bss->cbss.capability,
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bss->cbss.tsf);
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cbss->capability,
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cbss->tsf);
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}
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static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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@ -229,6 +231,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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{
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struct ieee80211_local *local = sdata->local;
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int freq;
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struct cfg80211_bss *cbss;
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struct ieee80211_bss *bss;
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struct sta_info *sta;
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struct ieee80211_channel *channel;
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@ -283,8 +286,10 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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if (!bss)
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return;
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cbss = container_of((void *)bss, struct cfg80211_bss, priv);
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/* was just updated in ieee80211_bss_info_update */
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beacon_timestamp = bss->cbss.tsf;
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beacon_timestamp = cbss->tsf;
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/* check if we need to merge IBSS */
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@ -297,11 +302,11 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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goto put_bss;
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/* not an IBSS */
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if (!(bss->cbss.capability & WLAN_CAPABILITY_IBSS))
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if (!(cbss->capability & WLAN_CAPABILITY_IBSS))
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goto put_bss;
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/* different channel */
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if (bss->cbss.channel != local->oper_channel)
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if (cbss->channel != local->oper_channel)
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goto put_bss;
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/* different SSID */
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@ -311,7 +316,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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goto put_bss;
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/* same BSSID */
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if (memcmp(bss->cbss.bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0)
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if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0)
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goto put_bss;
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if (rx_status->flag & RX_FLAG_TSFT) {
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@ -514,7 +519,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
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{
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struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
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struct ieee80211_local *local = sdata->local;
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struct ieee80211_bss *bss;
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struct cfg80211_bss *cbss;
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struct ieee80211_channel *chan = NULL;
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const u8 *bssid = NULL;
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int active_ibss;
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@ -538,21 +543,23 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
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chan = ifibss->channel;
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if (!is_zero_ether_addr(ifibss->bssid))
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bssid = ifibss->bssid;
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bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, bssid,
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ifibss->ssid, ifibss->ssid_len,
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WLAN_CAPABILITY_IBSS |
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WLAN_CAPABILITY_PRIVACY,
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capability);
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cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid,
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ifibss->ssid, ifibss->ssid_len,
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WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY,
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capability);
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if (bss) {
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if (cbss) {
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struct ieee80211_bss *bss;
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bss = (void *)cbss->priv;
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#ifdef CONFIG_MAC80211_IBSS_DEBUG
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printk(KERN_DEBUG " sta_find_ibss: selected %pM current "
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"%pM\n", bss->cbss.bssid, ifibss->bssid);
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"%pM\n", cbss->bssid, ifibss->bssid);
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#endif /* CONFIG_MAC80211_IBSS_DEBUG */
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printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM"
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" based on configured SSID\n",
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sdata->name, bss->cbss.bssid);
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sdata->name, cbss->bssid);
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ieee80211_sta_join_ibss(sdata, bss);
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ieee80211_rx_bss_put(local, bss);
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@ -71,9 +71,6 @@ struct ieee80211_fragment_entry {
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struct ieee80211_bss {
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/* Yes, this is a hack */
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struct cfg80211_bss cbss;
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/* don't want to look up all the time */
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size_t ssid_len;
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u8 ssid[IEEE80211_MAX_SSID_LEN];
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@ -274,7 +271,7 @@ struct ieee80211_work {
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bool privacy;
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} probe_auth;
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struct {
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struct ieee80211_bss *bss;
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struct cfg80211_bss *bss;
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const u8 *supp_rates;
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const u8 *ht_information_ie;
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enum ieee80211_smps_mode smps;
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@ -317,7 +314,7 @@ struct ieee80211_if_managed {
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int probe_send_count;
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struct mutex mtx;
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struct ieee80211_bss *associated;
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struct cfg80211_bss *associated;
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u8 bssid[ETH_ALEN];
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@ -359,9 +359,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
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WIPHY_FLAG_4ADDR_STATION;
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wiphy->privid = mac80211_wiphy_privid;
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/* Yes, putting cfg80211_bss into ieee80211_bss is a hack */
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wiphy->bss_priv_size = sizeof(struct ieee80211_bss) -
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sizeof(struct cfg80211_bss);
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wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
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local = wiphy_priv(wiphy);
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@ -330,7 +330,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
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ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL);
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/* XXX: shouldn't really modify cfg80211-owned data! */
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ifmgd->associated->cbss.channel = sdata->local->oper_channel;
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ifmgd->associated->channel = sdata->local->oper_channel;
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ieee80211_wake_queues_by_reason(&sdata->local->hw,
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IEEE80211_QUEUE_STOP_REASON_CSA);
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@ -357,6 +357,8 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_channel_sw_ie *sw_elem,
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struct ieee80211_bss *bss)
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{
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struct cfg80211_bss *cbss =
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container_of((void *)bss, struct cfg80211_bss, priv);
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struct ieee80211_channel *new_ch;
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struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
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int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num);
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@ -390,7 +392,7 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
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mod_timer(&ifmgd->chswitch_timer,
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jiffies +
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msecs_to_jiffies(sw_elem->count *
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bss->cbss.beacon_interval));
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cbss->beacon_interval));
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}
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}
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@ -670,23 +672,24 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
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}
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static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_bss *bss,
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struct cfg80211_bss *cbss,
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u32 bss_info_changed)
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{
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struct ieee80211_bss *bss = (void *)cbss->priv;
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struct ieee80211_local *local = sdata->local;
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bss_info_changed |= BSS_CHANGED_ASSOC;
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/* set timing information */
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sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval;
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sdata->vif.bss_conf.timestamp = bss->cbss.tsf;
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sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
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sdata->vif.bss_conf.timestamp = cbss->tsf;
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sdata->vif.bss_conf.dtim_period = bss->dtim_period;
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bss_info_changed |= BSS_CHANGED_BEACON_INT;
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bss_info_changed |= ieee80211_handle_bss_capability(sdata,
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bss->cbss.capability, bss->has_erp_value, bss->erp_value);
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cbss->capability, bss->has_erp_value, bss->erp_value);
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sdata->u.mgd.associated = bss;
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memcpy(sdata->u.mgd.bssid, bss->cbss.bssid, ETH_ALEN);
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sdata->u.mgd.associated = cbss;
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memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
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/* just to be sure */
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sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
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@ -737,7 +740,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata)
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if (WARN_ON(!ifmgd->associated))
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return;
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memcpy(bssid, ifmgd->associated->cbss.bssid, ETH_ALEN);
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memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
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ifmgd->associated = NULL;
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memset(ifmgd->bssid, 0, ETH_ALEN);
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@ -833,8 +836,8 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
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struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
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const u8 *ssid;
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ssid = ieee80211_bss_get_ie(&ifmgd->associated->cbss, WLAN_EID_SSID);
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ieee80211_send_probe_req(sdata, ifmgd->associated->cbss.bssid,
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ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
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ieee80211_send_probe_req(sdata, ifmgd->associated->bssid,
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ssid + 2, ssid[1], NULL, 0);
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ifmgd->probe_send_count++;
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@ -928,7 +931,7 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
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ASSERT_MGD_MTX(ifmgd);
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bssid = ifmgd->associated->cbss.bssid;
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bssid = ifmgd->associated->bssid;
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reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
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@ -957,7 +960,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
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if (WARN_ON(!ifmgd->associated))
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return RX_MGMT_NONE;
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if (WARN_ON(memcmp(ifmgd->associated->cbss.bssid, mgmt->sa, ETH_ALEN)))
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if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN)))
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return RX_MGMT_NONE;
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reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
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@ -979,7 +982,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
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struct ieee80211_local *local = sdata->local;
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struct ieee80211_supported_band *sband;
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struct sta_info *sta;
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struct ieee80211_bss *bss = wk->assoc.bss;
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struct cfg80211_bss *cbss = wk->assoc.bss;
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u8 *pos;
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u32 rates, basic_rates;
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u16 capab_info, aid;
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@ -1011,7 +1014,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
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ifmgd->aid = aid;
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sta = sta_info_alloc(sdata, bss->cbss.bssid, GFP_KERNEL);
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sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
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if (!sta) {
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printk(KERN_DEBUG "%s: failed to alloc STA entry for"
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" the AP\n", sdata->name);
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@ -1103,14 +1106,13 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
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(sdata->local->hw.queues >= 4) &&
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!(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
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changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
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bss->cbss.bssid,
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ap_ht_cap_flags);
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cbss->bssid, ap_ht_cap_flags);
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/* set AID and assoc capability,
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* ieee80211_set_associated() will tell the driver */
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bss_conf->aid = aid;
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bss_conf->assoc_capability = capab_info;
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ieee80211_set_associated(sdata, bss, changed);
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ieee80211_set_associated(sdata, cbss, changed);
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/*
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* Start timer to probe the connection to the AP now.
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@ -1154,7 +1156,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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return;
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if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
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(memcmp(mgmt->bssid, sdata->u.mgd.associated->cbss.bssid,
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(memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid,
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ETH_ALEN) == 0)) {
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struct ieee80211_channel_sw_ie *sw_elem =
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(struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
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@ -1189,7 +1191,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
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ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
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if (ifmgd->associated &&
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memcmp(mgmt->bssid, ifmgd->associated->cbss.bssid, ETH_ALEN) == 0 &&
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memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0 &&
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ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
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IEEE80211_STA_CONNECTION_POLL)) {
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ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
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@ -1262,7 +1264,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
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if (!ifmgd->associated)
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return;
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bssid = ifmgd->associated->cbss.bssid;
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bssid = ifmgd->associated->bssid;
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/*
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* And in theory even frames from a different AP we were just
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@ -1428,8 +1430,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
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mutex_lock(&ifmgd->mtx);
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if (ifmgd->associated &&
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memcmp(ifmgd->associated->cbss.bssid, mgmt->bssid,
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ETH_ALEN) == 0) {
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memcmp(ifmgd->associated->bssid, mgmt->bssid, ETH_ALEN) == 0) {
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switch (fc & IEEE80211_FCTL_STYPE) {
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case IEEE80211_STYPE_BEACON:
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ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len,
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@ -1448,7 +1449,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
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/* XXX: differentiate, can only happen for CSA now! */
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ieee80211_sta_process_chanswitch(sdata,
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&mgmt->u.action.u.chan_switch.sw_elem,
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ifmgd->associated);
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(void *)ifmgd->associated->priv);
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break;
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}
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mutex_unlock(&ifmgd->mtx);
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@ -1533,7 +1534,7 @@ static void ieee80211_sta_work(struct work_struct *work)
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ifmgd->associated) {
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u8 bssid[ETH_ALEN];
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memcpy(bssid, ifmgd->associated->cbss.bssid, ETH_ALEN);
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memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
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if (time_is_after_jiffies(ifmgd->probe_timeout))
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run_again(ifmgd, ifmgd->probe_timeout);
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@ -1840,6 +1841,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
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struct cfg80211_assoc_request *req)
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{
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struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
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struct ieee80211_bss *bss = (void *)req->bss->priv;
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struct ieee80211_work *wk;
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const u8 *ssid;
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int i;
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@ -1870,7 +1872,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
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} else
|
||||
wk->ie_len = 0;
|
||||
|
||||
wk->assoc.bss = (void *)req->bss;
|
||||
wk->assoc.bss = req->bss;
|
||||
|
||||
memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN);
|
||||
|
||||
@ -1893,9 +1895,9 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
|
||||
*/
|
||||
wk->assoc.use_11n = !(ifmgd->flags & IEEE80211_STA_DISABLE_11N);
|
||||
wk->assoc.capability = req->bss->capability;
|
||||
wk->assoc.wmm_used = wk->assoc.bss->wmm_used;
|
||||
wk->assoc.supp_rates = wk->assoc.bss->supp_rates;
|
||||
wk->assoc.supp_rates_len = wk->assoc.bss->supp_rates_len;
|
||||
wk->assoc.wmm_used = bss->wmm_used;
|
||||
wk->assoc.supp_rates = bss->supp_rates;
|
||||
wk->assoc.supp_rates_len = bss->supp_rates_len;
|
||||
wk->assoc.ht_information_ie =
|
||||
ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION);
|
||||
|
||||
@ -1942,7 +1944,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
|
||||
|
||||
mutex_lock(&ifmgd->mtx);
|
||||
|
||||
if (ifmgd->associated && &ifmgd->associated->cbss == req->bss) {
|
||||
if (ifmgd->associated == req->bss) {
|
||||
bssid = req->bss->bssid;
|
||||
ieee80211_set_disassoc(sdata);
|
||||
mutex_unlock(&ifmgd->mtx);
|
||||
@ -2004,7 +2006,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
|
||||
* to cfg80211 while that's in a locked section already
|
||||
* trying to tell us that the user wants to disconnect.
|
||||
*/
|
||||
if (&ifmgd->associated->cbss != req->bss) {
|
||||
if (ifmgd->associated != req->bss) {
|
||||
mutex_unlock(&ifmgd->mtx);
|
||||
return -ENOLINK;
|
||||
}
|
||||
|
||||
@ -29,16 +29,19 @@ struct ieee80211_bss *
|
||||
ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
|
||||
u8 *ssid, u8 ssid_len)
|
||||
{
|
||||
return (void *)cfg80211_get_bss(local->hw.wiphy,
|
||||
ieee80211_get_channel(local->hw.wiphy,
|
||||
freq),
|
||||
bssid, ssid, ssid_len,
|
||||
0, 0);
|
||||
struct cfg80211_bss *cbss;
|
||||
|
||||
cbss = cfg80211_get_bss(local->hw.wiphy,
|
||||
ieee80211_get_channel(local->hw.wiphy, freq),
|
||||
bssid, ssid, ssid_len, 0, 0);
|
||||
if (!cbss)
|
||||
return NULL;
|
||||
return (void *)cbss->priv;
|
||||
}
|
||||
|
||||
static void ieee80211_rx_bss_free(struct cfg80211_bss *cbss)
|
||||
{
|
||||
struct ieee80211_bss *bss = (void *)cbss;
|
||||
struct ieee80211_bss *bss = (void *)cbss->priv;
|
||||
|
||||
kfree(bss_mesh_id(bss));
|
||||
kfree(bss_mesh_cfg(bss));
|
||||
@ -47,7 +50,9 @@ static void ieee80211_rx_bss_free(struct cfg80211_bss *cbss)
|
||||
void ieee80211_rx_bss_put(struct ieee80211_local *local,
|
||||
struct ieee80211_bss *bss)
|
||||
{
|
||||
cfg80211_put_bss((struct cfg80211_bss *)bss);
|
||||
if (!bss)
|
||||
return;
|
||||
cfg80211_put_bss(container_of((void *)bss, struct cfg80211_bss, priv));
|
||||
}
|
||||
|
||||
struct ieee80211_bss *
|
||||
@ -59,6 +64,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
|
||||
struct ieee80211_channel *channel,
|
||||
bool beacon)
|
||||
{
|
||||
struct cfg80211_bss *cbss;
|
||||
struct ieee80211_bss *bss;
|
||||
int clen;
|
||||
s32 signal = 0;
|
||||
@ -68,13 +74,14 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
|
||||
else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
|
||||
signal = (rx_status->signal * 100) / local->hw.max_signal;
|
||||
|
||||
bss = (void *)cfg80211_inform_bss_frame(local->hw.wiphy, channel,
|
||||
mgmt, len, signal, GFP_ATOMIC);
|
||||
cbss = cfg80211_inform_bss_frame(local->hw.wiphy, channel,
|
||||
mgmt, len, signal, GFP_ATOMIC);
|
||||
|
||||
if (!bss)
|
||||
if (!cbss)
|
||||
return NULL;
|
||||
|
||||
bss->cbss.free_priv = ieee80211_rx_bss_free;
|
||||
cbss->free_priv = ieee80211_rx_bss_free;
|
||||
bss = (void *)cbss->priv;
|
||||
|
||||
/* save the ERP value so that it is available at association time */
|
||||
if (elems->erp_info && elems->erp_info_len >= 1) {
|
||||
|
||||
@ -517,8 +517,7 @@ ieee80211_associate(struct ieee80211_work *wk)
|
||||
* bss struct for that AP.
|
||||
*/
|
||||
if (wk->assoc.bss)
|
||||
cfg80211_unlink_bss(local->hw.wiphy,
|
||||
&wk->assoc.bss->cbss);
|
||||
cfg80211_unlink_bss(local->hw.wiphy, wk->assoc.bss);
|
||||
|
||||
/*
|
||||
* We might have a pending scan which had no chance to run yet
|
||||
|
||||
Loading…
Reference in New Issue
Block a user