mac80211: verify virtual interfaces in driver API
The driver is never informed about monitor or AP_VLAN interfaces, so whenever we pass those to it later this is a bug. Verify we don't as there are some cases where this could happen. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
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6e3e939f3b
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7b7eab6fc1
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@ -5,6 +5,11 @@
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#include "ieee80211_i.h"
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#include "driver-trace.h"
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static inline void check_sdata_in_driver(struct ieee80211_sub_if_data *sdata)
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{
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WARN_ON(!(sdata->flags & IEEE80211_SDATA_IN_DRIVER));
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}
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static inline void drv_tx(struct ieee80211_local *local, struct sk_buff *skb)
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{
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local->ops->tx(&local->hw, skb);
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@ -69,15 +74,23 @@ static inline int drv_resume(struct ieee80211_local *local)
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#endif
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static inline int drv_add_interface(struct ieee80211_local *local,
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struct ieee80211_vif *vif)
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struct ieee80211_sub_if_data *sdata)
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{
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int ret;
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might_sleep();
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trace_drv_add_interface(local, vif_to_sdata(vif));
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ret = local->ops->add_interface(&local->hw, vif);
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if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
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sdata->vif.type == NL80211_IFTYPE_MONITOR))
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return -EINVAL;
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trace_drv_add_interface(local, sdata);
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ret = local->ops->add_interface(&local->hw, &sdata->vif);
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trace_drv_return_int(local, ret);
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if (ret == 0)
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sdata->flags |= IEEE80211_SDATA_IN_DRIVER;
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return ret;
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}
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@ -89,6 +102,8 @@ static inline int drv_change_interface(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_change_interface(local, sdata, type, p2p);
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ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
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trace_drv_return_int(local, ret);
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@ -96,12 +111,15 @@ static inline int drv_change_interface(struct ieee80211_local *local,
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}
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static inline void drv_remove_interface(struct ieee80211_local *local,
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struct ieee80211_vif *vif)
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struct ieee80211_sub_if_data *sdata)
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{
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might_sleep();
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trace_drv_remove_interface(local, vif_to_sdata(vif));
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local->ops->remove_interface(&local->hw, vif);
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check_sdata_in_driver(sdata);
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trace_drv_remove_interface(local, sdata);
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local->ops->remove_interface(&local->hw, &sdata->vif);
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sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
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trace_drv_return_void(local);
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}
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@ -124,6 +142,8 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_bss_info_changed(local, sdata, info, changed);
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if (local->ops->bss_info_changed)
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local->ops->bss_info_changed(&local->hw, &sdata->vif, info, changed);
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@ -139,6 +159,8 @@ static inline int drv_tx_sync(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_tx_sync(local, sdata, bssid, type);
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if (local->ops->tx_sync)
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ret = local->ops->tx_sync(&local->hw, &sdata->vif,
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@ -154,6 +176,8 @@ static inline void drv_finish_tx_sync(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_finish_tx_sync(local, sdata, bssid, type);
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if (local->ops->finish_tx_sync)
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local->ops->finish_tx_sync(&local->hw, &sdata->vif,
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@ -211,6 +235,8 @@ static inline int drv_set_key(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_set_key(local, cmd, sdata, sta, key);
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ret = local->ops->set_key(&local->hw, cmd, &sdata->vif, sta, key);
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trace_drv_return_int(local, ret);
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@ -228,6 +254,8 @@ static inline void drv_update_tkip_key(struct ieee80211_local *local,
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if (sta)
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ista = &sta->sta;
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check_sdata_in_driver(sdata);
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trace_drv_update_tkip_key(local, sdata, conf, ista, iv32);
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if (local->ops->update_tkip_key)
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local->ops->update_tkip_key(&local->hw, &sdata->vif, conf,
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@ -243,6 +271,8 @@ static inline int drv_hw_scan(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_hw_scan(local, sdata);
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ret = local->ops->hw_scan(&local->hw, &sdata->vif, req);
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trace_drv_return_int(local, ret);
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@ -254,6 +284,8 @@ static inline void drv_cancel_hw_scan(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_cancel_hw_scan(local, sdata);
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local->ops->cancel_hw_scan(&local->hw, &sdata->vif);
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trace_drv_return_void(local);
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@ -269,6 +301,8 @@ drv_sched_scan_start(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_sched_scan_start(local, sdata);
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ret = local->ops->sched_scan_start(&local->hw, &sdata->vif,
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req, ies);
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@ -281,6 +315,8 @@ static inline void drv_sched_scan_stop(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_sched_scan_stop(local, sdata);
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local->ops->sched_scan_stop(&local->hw, &sdata->vif);
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trace_drv_return_void(local);
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@ -377,6 +413,8 @@ static inline void drv_sta_notify(struct ieee80211_local *local,
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enum sta_notify_cmd cmd,
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struct ieee80211_sta *sta)
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{
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check_sdata_in_driver(sdata);
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trace_drv_sta_notify(local, sdata, cmd, sta);
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if (local->ops->sta_notify)
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local->ops->sta_notify(&local->hw, &sdata->vif, cmd, sta);
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@ -391,6 +429,8 @@ static inline int drv_sta_add(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_sta_add(local, sdata, sta);
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if (local->ops->sta_add)
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ret = local->ops->sta_add(&local->hw, &sdata->vif, sta);
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@ -406,6 +446,8 @@ static inline void drv_sta_remove(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_sta_remove(local, sdata, sta);
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if (local->ops->sta_remove)
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local->ops->sta_remove(&local->hw, &sdata->vif, sta);
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@ -421,6 +463,8 @@ static inline int drv_conf_tx(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_conf_tx(local, sdata, queue, params);
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if (local->ops->conf_tx)
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ret = local->ops->conf_tx(&local->hw, &sdata->vif,
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@ -436,6 +480,8 @@ static inline u64 drv_get_tsf(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_get_tsf(local, sdata);
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if (local->ops->get_tsf)
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ret = local->ops->get_tsf(&local->hw, &sdata->vif);
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@ -449,6 +495,8 @@ static inline void drv_set_tsf(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_set_tsf(local, sdata, tsf);
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if (local->ops->set_tsf)
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local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
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@ -460,6 +508,8 @@ static inline void drv_reset_tsf(struct ieee80211_local *local,
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{
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_reset_tsf(local, sdata);
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if (local->ops->reset_tsf)
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local->ops->reset_tsf(&local->hw, &sdata->vif);
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@ -489,6 +539,8 @@ static inline int drv_ampdu_action(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_ampdu_action(local, sdata, action, sta, tid, ssn, buf_size);
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if (local->ops->ampdu_action)
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@ -644,6 +696,8 @@ static inline int drv_set_bitrate_mask(struct ieee80211_local *local,
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might_sleep();
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check_sdata_in_driver(sdata);
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trace_drv_set_bitrate_mask(local, sdata, mask);
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if (local->ops->set_bitrate_mask)
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ret = local->ops->set_bitrate_mask(&local->hw,
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@ -657,6 +711,8 @@ static inline void drv_set_rekey_data(struct ieee80211_local *local,
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struct ieee80211_sub_if_data *sdata,
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struct cfg80211_gtk_rekey_data *data)
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{
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check_sdata_in_driver(sdata);
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trace_drv_set_rekey_data(local, sdata, data);
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if (local->ops->set_rekey_data)
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local->ops->set_rekey_data(&local->hw, &sdata->vif, data);
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@ -543,6 +543,7 @@ struct ieee80211_if_mesh {
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* associated stations and deliver multicast frames both
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* back to wireless media and to the local net stack.
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* @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
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* @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
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*/
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enum ieee80211_sub_if_data_flags {
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IEEE80211_SDATA_ALLMULTI = BIT(0),
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@ -550,6 +551,7 @@ enum ieee80211_sub_if_data_flags {
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IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
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IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
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IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
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IEEE80211_SDATA_IN_DRIVER = BIT(5),
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};
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/**
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@ -265,7 +265,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
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break;
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default:
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if (coming_up) {
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res = drv_add_interface(local, &sdata->vif);
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res = drv_add_interface(local, sdata);
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if (res)
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goto err_stop;
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}
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@ -345,7 +345,7 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
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return 0;
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err_del_interface:
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drv_remove_interface(local, &sdata->vif);
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drv_remove_interface(local, sdata);
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err_stop:
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if (!local->open_count)
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drv_stop(local);
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@ -520,7 +520,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
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ieee80211_free_keys(sdata);
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if (going_down)
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drv_remove_interface(local, &sdata->vif);
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drv_remove_interface(local, sdata);
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}
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sdata->bss = NULL;
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@ -125,7 +125,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
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ieee80211_bss_info_change_notify(sdata,
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BSS_CHANGED_BEACON_ENABLED);
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drv_remove_interface(local, &sdata->vif);
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drv_remove_interface(local, sdata);
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}
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/* stop hardware - this must stop RX */
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@ -1006,7 +1006,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
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if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
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sdata->vif.type != NL80211_IFTYPE_MONITOR &&
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ieee80211_sdata_running(sdata))
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res = drv_add_interface(local, &sdata->vif);
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res = drv_add_interface(local, sdata);
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}
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/* add STAs back */
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