Merge branch 'security' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
* 'security' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6: mac80211: fix spurious delBA handling mac80211: fix two remote exploits
This commit is contained in:
commit
29e553631b
|
@ -1277,8 +1277,16 @@ int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid)
|
|||
return -ENXIO;
|
||||
}
|
||||
|
||||
if (priv->stations[sta_id].tid[tid].agg.state ==
|
||||
IWL_EMPTYING_HW_QUEUE_ADDBA) {
|
||||
IWL_DEBUG_HT(priv, "AGG stop before setup done\n");
|
||||
ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, ra, tid);
|
||||
priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_ON)
|
||||
IWL_WARN(priv, "Stopping AGG while state not IWL_AGG_ON\n");
|
||||
IWL_WARN(priv, "Stopping AGG while state not ON or starting\n");
|
||||
|
||||
tid_data = &priv->stations[sta_id].tid[tid];
|
||||
ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
|
||||
|
|
|
@ -1283,6 +1283,12 @@ enum ieee80211_filter_flags {
|
|||
*
|
||||
* These flags are used with the ampdu_action() callback in
|
||||
* &struct ieee80211_ops to indicate which action is needed.
|
||||
*
|
||||
* Note that drivers MUST be able to deal with a TX aggregation
|
||||
* session being stopped even before they OK'ed starting it by
|
||||
* calling ieee80211_start_tx_ba_cb(_irqsafe), because the peer
|
||||
* might receive the addBA frame and send a delBA right away!
|
||||
*
|
||||
* @IEEE80211_AMPDU_RX_START: start Rx aggregation
|
||||
* @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation
|
||||
* @IEEE80211_AMPDU_TX_START: start Tx aggregation
|
||||
|
|
|
@ -85,10 +85,6 @@ void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *r
|
|||
struct ieee80211_local *local = sdata->local;
|
||||
struct sta_info *sta;
|
||||
|
||||
/* stop HW Rx aggregation. ampdu_action existence
|
||||
* already verified in session init so we add the BUG_ON */
|
||||
BUG_ON(!local->ops->ampdu_action);
|
||||
|
||||
rcu_read_lock();
|
||||
|
||||
sta = sta_info_get(local, ra);
|
||||
|
|
|
@ -123,13 +123,18 @@ void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u1
|
|||
ieee80211_tx_skb(sdata, skb, 0);
|
||||
}
|
||||
|
||||
static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
|
||||
int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
|
||||
enum ieee80211_back_parties initiator)
|
||||
{
|
||||
struct ieee80211_local *local = sta->local;
|
||||
int ret;
|
||||
u8 *state;
|
||||
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Tx BA session stop requested for %pM tid %u\n",
|
||||
sta->sta.addr, tid);
|
||||
#endif /* CONFIG_MAC80211_HT_DEBUG */
|
||||
|
||||
state = &sta->ampdu_mlme.tid_state_tx[tid];
|
||||
|
||||
if (*state == HT_AGG_STATE_OPERATIONAL)
|
||||
|
@ -143,7 +148,6 @@ static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
|
|||
|
||||
/* HW shall not deny going back to legacy */
|
||||
if (WARN_ON(ret)) {
|
||||
*state = HT_AGG_STATE_OPERATIONAL;
|
||||
/*
|
||||
* We may have pending packets get stuck in this case...
|
||||
* Not bothering with a workaround for now.
|
||||
|
@ -525,11 +529,6 @@ int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
|
|||
goto unlock;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Tx BA session stop requested for %pM tid %u\n",
|
||||
sta->sta.addr, tid);
|
||||
#endif /* CONFIG_MAC80211_HT_DEBUG */
|
||||
|
||||
ret = ___ieee80211_stop_tx_ba_session(sta, tid, initiator);
|
||||
|
||||
unlock:
|
||||
|
@ -545,7 +544,7 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
|
|||
struct sta_info *sta;
|
||||
int ret = 0;
|
||||
|
||||
if (WARN_ON(!local->ops->ampdu_action))
|
||||
if (!local->ops->ampdu_action)
|
||||
return -EINVAL;
|
||||
|
||||
if (tid >= STA_TID_NUM)
|
||||
|
|
|
@ -141,7 +141,6 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
|
|||
struct sta_info *sta,
|
||||
struct ieee80211_mgmt *mgmt, size_t len)
|
||||
{
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
u16 tid, params;
|
||||
u16 initiator;
|
||||
|
||||
|
@ -161,10 +160,9 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
|
|||
WLAN_BACK_INITIATOR, 0);
|
||||
else { /* WLAN_BACK_RECIPIENT */
|
||||
spin_lock_bh(&sta->lock);
|
||||
sta->ampdu_mlme.tid_state_tx[tid] =
|
||||
HT_AGG_STATE_OPERATIONAL;
|
||||
spin_unlock_bh(&sta->lock);
|
||||
ieee80211_stop_tx_ba_session(&local->hw, sta->sta.addr, tid,
|
||||
if (sta->ampdu_mlme.tid_state_tx[tid] & HT_ADDBA_REQUESTED_MSK)
|
||||
___ieee80211_stop_tx_ba_session(sta, tid,
|
||||
WLAN_BACK_RECIPIENT);
|
||||
spin_unlock_bh(&sta->lock);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -1091,6 +1091,8 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
|
|||
|
||||
int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
|
||||
enum ieee80211_back_parties initiator);
|
||||
int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
|
||||
enum ieee80211_back_parties initiator);
|
||||
|
||||
/* Spectrum management */
|
||||
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
|
||||
|
|
Loading…
Reference in a new issue