From feff1f2fea3fc7ee055e46d0fbdb2d25ad2b14c4 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes@sipsolutions.net>
Date: Mon, 10 Aug 2009 16:01:54 +0200
Subject: [PATCH] mac80211: take statistics before encryption

When encryption is used, the number of bytes
sent to the peer increases by the IV and ICV.
This is accounted if software encryption is
used, but not if the devices does hardware
encryption. To make the numbers comparable,
never account for that overhead.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 net/mac80211/tx.c | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 7f2e4cdb8904..588c18a60de4 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -843,6 +843,23 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
 	return TX_CONTINUE;
 }
 
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_stats(struct ieee80211_tx_data *tx)
+{
+	struct sk_buff *skb = tx->skb;
+
+	if (!tx->sta)
+		return TX_CONTINUE;
+
+	tx->sta->tx_packets++;
+	do {
+		tx->sta->tx_fragments++;
+		tx->sta->tx_bytes += skb->len;
+	} while ((skb = skb->next));
+
+	return TX_CONTINUE;
+}
+
 static ieee80211_tx_result debug_noinline
 ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx)
 {
@@ -887,23 +904,6 @@ ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx)
 	return TX_CONTINUE;
 }
 
-static ieee80211_tx_result debug_noinline
-ieee80211_tx_h_stats(struct ieee80211_tx_data *tx)
-{
-	struct sk_buff *skb = tx->skb;
-
-	if (!tx->sta)
-		return TX_CONTINUE;
-
-	tx->sta->tx_packets++;
-	do {
-		tx->sta->tx_fragments++;
-		tx->sta->tx_bytes += skb->len;
-	} while ((skb = skb->next));
-
-	return TX_CONTINUE;
-}
-
 /* actual transmit path */
 
 /*
@@ -1213,9 +1213,9 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
 	CALL_TXH(ieee80211_tx_h_sequence)
 	CALL_TXH(ieee80211_tx_h_fragment)
 	/* handlers after fragment must be aware of tx info fragmentation! */
+	CALL_TXH(ieee80211_tx_h_stats)
 	CALL_TXH(ieee80211_tx_h_encrypt)
 	CALL_TXH(ieee80211_tx_h_calculate_duration)
-	CALL_TXH(ieee80211_tx_h_stats)
 #undef CALL_TXH
 
  txh_done: