From: Luciano Coelho <luciano.coelho@xxxxxxxxx>
In some cases we may want to stop the queues of a single vif (for
instance during a channel-switch). Add a function that stops all the
queues that are assigned to a vif. If a queue is assigned to more
than one vif, the corresponding netdev subqueue of the other vif(s)
will also be stopped. If the HW doesn't set the
IEEE80211_HW_QUEUE_CONTROL flag, then all queues are stopped.
Also add a corresponding function to wake the queues of a vif back.
Signed-off-by: Luciano Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
net/mac80211/ieee80211_i.h | 6 ++++++
net/mac80211/util.c | 38 +++++++++++++++++++++++++++++++++-----
2 files changed, 39 insertions(+), 5 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c9309db..2f995b1 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1736,6 +1736,12 @@ void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
enum queue_stop_reason reason);
+void ieee80211_stop_vif_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ enum queue_stop_reason reason);
+void ieee80211_wake_vif_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
enum queue_stop_reason reason);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 6d29e40..f1e751d 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -529,14 +529,11 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw)
}
EXPORT_SYMBOL(ieee80211_wake_queues);
-void ieee80211_flush_queues(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
+static int ieee80211_get_vif_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
{
u32 queues;
- if (!local->ops->flush)
- return;
-
if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) {
int ac;
@@ -551,6 +548,19 @@ void ieee80211_flush_queues(struct ieee80211_local *local,
queues = BIT(local->hw.queues) - 1;
}
+ return queues;
+}
+
+void ieee80211_flush_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ u32 queues;
+
+ if (!local->ops->flush)
+ return;
+
+ queues = ieee80211_get_vif_queues(local, sdata);
+
ieee80211_stop_queues_by_reason(&local->hw, queues,
IEEE80211_QUEUE_STOP_REASON_FLUSH);
@@ -560,6 +570,24 @@ void ieee80211_flush_queues(struct ieee80211_local *local,
IEEE80211_QUEUE_STOP_REASON_FLUSH);
}
+void ieee80211_stop_vif_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ enum queue_stop_reason reason)
+{
+ ieee80211_stop_queues_by_reason(&local->hw,
+ ieee80211_get_vif_queues(local, sdata),
+ reason);
+}
+
+void ieee80211_wake_vif_queues(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ enum queue_stop_reason reason)
+{
+ ieee80211_wake_queues_by_reason(&local->hw,
+ ieee80211_get_vif_queues(local, sdata),
+ IEEE80211_QUEUE_STOP_REASON_DRIVER);
+}
+
static void __iterate_active_interfaces(struct ieee80211_local *local,
u32 iter_flags,
void (*iterator)(void *data, u8 *mac,
--
1.9.1
--
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