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-rw-r--r--drivers/net/wireless/mac80211_hwsim.c11
-rw-r--r--include/net/mac80211.h5
-rw-r--r--net/mac80211/driver-ops.h7
-rw-r--r--net/mac80211/driver-trace.h21
-rw-r--r--net/mac80211/iface.c2
-rw-r--r--net/mac80211/scan.c13
6 files changed, 57 insertions, 2 deletions
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 718a5f198c30..4dee69a38c1d 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -896,6 +896,16 @@ static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
return 0;
}
+static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
+{
+ /*
+ * In this special case, there's nothing we need to
+ * do because hwsim does transmission synchronously.
+ * In the future, when it does transmissions via
+ * userspace, we may need to do something.
+ */
+}
+
static const struct ieee80211_ops mac80211_hwsim_ops =
{
@@ -912,6 +922,7 @@ static const struct ieee80211_ops mac80211_hwsim_ops =
.conf_tx = mac80211_hwsim_conf_tx,
CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
.ampdu_action = mac80211_hwsim_ampdu_action,
+ .flush = mac80211_hwsim_flush,
};
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 494ac69ff477..77ea34b03285 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1545,6 +1545,10 @@ enum ieee80211_ampdu_mlme_action {
* and need to call wiphy_rfkill_set_hw_state() in the callback.
*
* @testmode_cmd: Implement a cfg80211 test mode command.
+ *
+ * @flush: Flush all pending frames from the hardware queue, making sure
+ * that the hardware queues are empty. If the parameter @drop is set
+ * to %true, pending frames may be dropped.
*/
struct ieee80211_ops {
int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
@@ -1601,6 +1605,7 @@ struct ieee80211_ops {
#ifdef CONFIG_NL80211_TESTMODE
int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len);
#endif
+ void (*flush)(struct ieee80211_hw *hw, bool drop);
};
/**
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 727e4cf7b8a6..cbe133bcdf34 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -259,4 +259,11 @@ static inline void drv_rfkill_poll(struct ieee80211_local *local)
if (local->ops->rfkill_poll)
local->ops->rfkill_poll(&local->hw);
}
+
+static inline void drv_flush(struct ieee80211_local *local, bool drop)
+{
+ trace_drv_flush(local, drop);
+ if (local->ops->flush)
+ local->ops->flush(&local->hw, drop);
+}
#endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index 7a849b920165..977cc7528bc6 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -690,6 +690,27 @@ TRACE_EVENT(drv_ampdu_action,
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->action, __entry->tid, __entry->ret
)
);
+
+TRACE_EVENT(drv_flush,
+ TP_PROTO(struct ieee80211_local *local, bool drop),
+
+ TP_ARGS(local, drop),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(bool, drop)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->drop = drop;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT " drop:%d",
+ LOCAL_PR_ARG, __entry->drop
+ )
+);
#endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 1ceca14331d4..389dc8d880f3 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -917,6 +917,8 @@ static u32 ieee80211_idle_on(struct ieee80211_local *local)
wiphy_name(local->hw.wiphy));
#endif
+ drv_flush(local, false);
+
local->hw.conf.flags |= IEEE80211_CONF_IDLE;
return IEEE80211_CONF_CHANGE_IDLE;
}
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index ae1830056521..d98c45e5528b 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -418,9 +418,10 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
local->next_scan_state = SCAN_DECISION;
local->scan_channel_idx = 0;
+ drv_flush(local, false);
+
ieee80211_configure_filter(local);
- /* TODO: start scan as soon as all nullfunc frames are ACKed */
ieee80211_queue_delayed_work(&local->hw,
&local->scan_work,
IEEE80211_CHANNEL_TIME);
@@ -584,8 +585,16 @@ static void ieee80211_scan_state_leave_oper_channel(struct ieee80211_local *loca
__set_bit(SCAN_OFF_CHANNEL, &local->scanning);
+ /*
+ * What if the nullfunc frames didn't arrive?
+ */
+ drv_flush(local, false);
+ if (local->ops->flush)
+ *next_delay = 0;
+ else
+ *next_delay = HZ / 10;
+
/* advance to the next channel to be scanned */
- *next_delay = HZ / 10;
local->next_scan_state = SCAN_SET_CHANNEL;
}