From 20ad19d0ac7389b04b566ebf3e0e497974f63ffa Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes@sipsolutions.net>
Date: Tue, 10 Feb 2009 21:25:45 +0100
Subject: mac80211: fix RX aggregation timeouts

The values are in TUs (1.024ms), not ms.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 67bd522..5b23001 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -57,6 +57,8 @@ struct ieee80211_local;
  */
 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
 
+#define TU_TO_EXP_TIME(x)	(jiffies + usecs_to_jiffies((x) * 1024))
+
 struct ieee80211_fragment_entry {
 	unsigned long first_frag_time;
 	unsigned int seq;
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 4f862b2..60b35ac 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -58,7 +58,6 @@ static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
 #define PERR_IE_DST_ADDR(x)	(x + 2)
 #define PERR_IE_DST_DSN(x)	u32_field_get(x, 8, 0);
 
-#define TU_TO_EXP_TIME(x) (jiffies + msecs_to_jiffies(x * 1024 / 1000))
 #define MSEC_TO_TU(x) (x*1000/1024)
 #define DSN_GT(x, y) ((long) (y) - (long) (x) < 0)
 #define DSN_LT(x, y) ((long) (x) - (long) (y) < 0)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5a733c52..f34cc66 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1673,11 +1673,9 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx)
 		start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4;
 
 		/* reset session timer */
-		if (tid_agg_rx->timeout) {
-			unsigned long expires =
-				jiffies + (tid_agg_rx->timeout / 1000) * HZ;
-			mod_timer(&tid_agg_rx->session_timer, expires);
-		}
+		if (tid_agg_rx->timeout)
+			mod_timer(&tid_agg_rx->session_timer,
+				  TU_TO_EXP_TIME(tid_agg_rx->timeout));
 
 		/* manage reordering buffer according to requested */
 		/* sequence number */
@@ -2414,11 +2412,9 @@ static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local,
 	/* new un-ordered ampdu frame - process it */
 
 	/* reset session timer */
-	if (tid_agg_rx->timeout) {
-		unsigned long expires =
-			jiffies + (tid_agg_rx->timeout / 1000) * HZ;
-		mod_timer(&tid_agg_rx->session_timer, expires);
-	}
+	if (tid_agg_rx->timeout)
+		mod_timer(&tid_agg_rx->session_timer,
+			  TU_TO_EXP_TIME(tid_agg_rx->timeout));
 
 	/* if this mpdu is fragmented - terminate rx aggregation session */
 	sc = le16_to_cpu(hdr->seq_ctrl);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index d75c870..a070bd9 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -88,7 +88,7 @@ struct tid_ampdu_tx {
  * @stored_mpdu_num: number of MPDUs in reordering buffer
  * @ssn: Starting Sequence Number expected to be aggregated.
  * @buf_size: buffer size for incoming A-MPDUs
- * @timeout: reset timer value.
+ * @timeout: reset timer value (in TUs).
  * @dialog_token: dialog token for aggregation session
  */
 struct tid_ampdu_rx {
-- 
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