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Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r--net/mac80211/util.c51
1 files changed, 37 insertions, 14 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index bec424316ea4..d0eb38b890aa 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -299,16 +299,16 @@ out:
spin_unlock_bh(&fq->lock);
}
-void ieee80211_wake_txqs(unsigned long data)
+static void
+__releases(&local->queue_stop_reason_lock)
+__acquires(&local->queue_stop_reason_lock)
+_ieee80211_wake_txqs(struct ieee80211_local *local, unsigned long *flags)
{
- struct ieee80211_local *local = (struct ieee80211_local *)data;
struct ieee80211_sub_if_data *sdata;
int n_acs = IEEE80211_NUM_ACS;
- unsigned long flags;
int i;
rcu_read_lock();
- spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
if (local->hw.queues < IEEE80211_NUM_ACS)
n_acs = 1;
@@ -317,7 +317,7 @@ void ieee80211_wake_txqs(unsigned long data)
if (local->queue_stop_reasons[i])
continue;
- spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock, *flags);
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
int ac;
@@ -329,13 +329,22 @@ void ieee80211_wake_txqs(unsigned long data)
__ieee80211_wake_txqs(sdata, ac);
}
}
- spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+ spin_lock_irqsave(&local->queue_stop_reason_lock, *flags);
}
- spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
rcu_read_unlock();
}
+void ieee80211_wake_txqs(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *)data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+ _ieee80211_wake_txqs(local, &flags);
+ spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+}
+
void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
{
struct ieee80211_sub_if_data *sdata;
@@ -371,7 +380,8 @@ void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
enum queue_stop_reason reason,
- bool refcounted)
+ bool refcounted,
+ unsigned long *flags)
{
struct ieee80211_local *local = hw_to_local(hw);
@@ -405,8 +415,19 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
} else
tasklet_schedule(&local->tx_pending_tasklet);
- if (local->ops->wake_tx_queue)
- tasklet_schedule(&local->wake_txqs_tasklet);
+ /*
+ * Calling _ieee80211_wake_txqs here can be a problem because it may
+ * release queue_stop_reason_lock which has been taken by
+ * __ieee80211_wake_queue's caller. It is certainly not very nice to
+ * release someone's lock, but it is fine because all the callers of
+ * __ieee80211_wake_queue call it right before releasing the lock.
+ */
+ if (local->ops->wake_tx_queue) {
+ if (reason == IEEE80211_QUEUE_STOP_REASON_DRIVER)
+ tasklet_schedule(&local->wake_txqs_tasklet);
+ else
+ _ieee80211_wake_txqs(local, flags);
+ }
}
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
@@ -417,7 +438,7 @@ void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
unsigned long flags;
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
- __ieee80211_wake_queue(hw, queue, reason, refcounted);
+ __ieee80211_wake_queue(hw, queue, reason, refcounted, &flags);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
}
@@ -514,7 +535,7 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
false);
__skb_queue_tail(&local->pending[queue], skb);
__ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
- false);
+ false, &flags);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
}
@@ -547,7 +568,7 @@ void ieee80211_add_pending_skbs(struct ieee80211_local *local,
for (i = 0; i < hw->queues; i++)
__ieee80211_wake_queue(hw, i,
IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
- false);
+ false, &flags);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
}
@@ -605,7 +626,7 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
for_each_set_bit(i, &queues, hw->queues)
- __ieee80211_wake_queue(hw, i, reason, refcounted);
+ __ieee80211_wake_queue(hw, i, reason, refcounted, &flags);
spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
}
@@ -1202,6 +1223,8 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
if (pos[0] == WLAN_EID_EXT_HE_MU_EDCA &&
elen >= (sizeof(*elems->mu_edca_param_set) + 1)) {
elems->mu_edca_param_set = (void *)&pos[1];
+ if (calc_crc)
+ crc = crc32_be(crc, pos - 2, elen + 2);
} else if (pos[0] == WLAN_EID_EXT_HE_CAPABILITY) {
elems->he_cap = (void *)&pos[1];
elems->he_cap_len = elen - 1;