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mac80211: add functions to stop and wake all queues assigned to a vif 

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@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Luciano Coelho 2014-06-13 16:30:06 +03:00 committed by Johannes Berg
parent cca07b00a5
commit 26da23b695
2 changed files with 41 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/mac80211/ieee80211_i.h
View File

@ -1720,6 +1720,12 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
unsigned long queues,
enum queue_stop_reason reason,
bool refcounted);
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,

41
net/mac80211/util.c
View File

@ -552,13 +552,11 @@ 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 unsigned int
ieee80211_get_vif_queues(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
u32 queues;
if (!local->ops->flush)
return;
unsigned int queues;
if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) {
int ac;
@ -574,6 +572,19 @@ 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)
{
unsigned int 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,
false);
@ -585,6 +596,24 @@ void ieee80211_flush_queues(struct ieee80211_local *local,
false);
}
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, true);
}
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),
reason, true);
}
static void __iterate_active_interfaces(struct ieee80211_local *local,
u32 iter_flags,
void (*iterator)(void *data, u8 *mac,