diff mbox series

[4/5] rt2x00: use different txstatus timeouts when flushing

Message ID 1537957497-7790-5-git-send-email-sgruszka@redhat.com (mailing list archive)
State Accepted
Commit adf26a356f132e35093585521ea3e36cd185af83
Delegated to: Kalle Valo
Headers show
Series rt2800mmio txdone/interrupts/flush rework | expand

Commit Message

Stanislaw Gruszka Sept. 26, 2018, 10:24 a.m. UTC
Use different tx status timeouts for normal operation and when flushing.
This increase timeout to 2s for normal operation as when there are bad
radio conditions and frames are reposted many times device can not provide
the status for quite long. With new timeout we can still get valid status
on such bad conditions.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
 drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 31 +++++++++++++++++---------
 drivers/net/wireless/ralink/rt2x00/rt2x00.h    |  1 +
 drivers/net/wireless/ralink/rt2x00/rt2x00mac.c |  4 ++++
 3 files changed, 26 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 0c56c7dca55f..595cb9c90b81 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -1137,36 +1137,47 @@  void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
 }
 EXPORT_SYMBOL_GPL(rt2800_txdone);
 
-static inline bool rt2800_entry_txstatus_timeout(struct queue_entry *entry)
+static inline bool rt2800_entry_txstatus_timeout(struct rt2x00_dev *rt2x00dev,
+						 struct queue_entry *entry)
 {
-	bool tout;
+	bool ret;
+	unsigned long tout;
 
 	if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
 		return false;
 
-	tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(500));
-	if (unlikely(tout))
+	if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags))
+		tout = msecs_to_jiffies(100);
+	else
+		tout = msecs_to_jiffies(2000);
+
+	ret = time_after(jiffies, entry->last_action + tout);
+	if (unlikely(ret))
 		rt2x00_dbg(entry->queue->rt2x00dev,
 			   "TX status timeout for entry %d in queue %d\n",
 			   entry->entry_idx, entry->queue->qid);
-	return tout;
-
+	return ret;
 }
 
 bool rt2800_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
 {
 	struct data_queue *queue;
 	struct queue_entry *entry;
+	unsigned long tout;
+
+	if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags))
+		tout = msecs_to_jiffies(50);
+	else
+		tout = msecs_to_jiffies(1000);
 
-	if (time_before(jiffies,
-			rt2x00dev->last_nostatus_check + msecs_to_jiffies(500)))
+	if (time_before(jiffies, rt2x00dev->last_nostatus_check + tout))
 		return false;
 
 	rt2x00dev->last_nostatus_check = jiffies;
 
 	tx_queue_for_each(rt2x00dev, queue) {
 		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
-		if (rt2800_entry_txstatus_timeout(entry))
+		if (rt2800_entry_txstatus_timeout(rt2x00dev, entry))
 			return true;
 	}
 
@@ -1195,7 +1206,7 @@  void rt2800_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
 				break;
 
 			if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags) ||
-			    rt2800_entry_txstatus_timeout(entry))
+			    rt2800_entry_txstatus_timeout(rt2x00dev, entry))
 				rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
 			else
 				break;
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
index af062cda4a23..4b1744e9fb78 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -665,6 +665,7 @@  enum rt2x00_state_flags {
 	DEVICE_STATE_STARTED,
 	DEVICE_STATE_ENABLED_RADIO,
 	DEVICE_STATE_SCANNING,
+	DEVICE_STATE_FLUSHING,
 
 	/*
 	 * Driver configuration
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
index fa2fd64084ac..2825560e2424 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
@@ -720,8 +720,12 @@  void rt2x00mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 		return;
 
+	set_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags);
+
 	tx_queue_for_each(rt2x00dev, queue)
 		rt2x00queue_flush_queue(queue, drop);
+
+	clear_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags);
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_flush);