linux-kernel - [PATCH] net/mac80211/: Use time

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Date:	Mon, 17 Mar 2008 11:36:29 +0200
From:	S.Çağlar Onur <caglar@...dus.org.tr>
To:	linux-kernel@...r.kernel.org
Cc:	linux-wireless@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] net/mac80211/: Use time_* macros

The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values.

So following patch implements usage of the time_after() macro, defined at linux/jiffies.h, which deals with wrapping correctly

Cc: linux-wireless@...r.kernel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: S.Çağlar Onur <caglar@...dus.org.tr>
---
 net/mac80211/rc80211_simple.c |    3 ++-
 net/mac80211/rx.c             |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index 9a78b11..91bbff1 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -7,6 +7,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/jiffies.h>
 #include <linux/init.h>
 #include <linux/netdevice.h>
 #include <linux/types.h>
@@ -177,7 +178,7 @@ static void rate_control_simple_tx_status(void *priv, struct net_device *dev,
 		rate_control_rate_dec(local, sta);
 	}
 
-	if (srctrl->avg_rate_update + 60 * HZ < jiffies) {
+	if (time_after(jiffies, srctrl->avg_rate_update + 60 * HZ)) {
 		srctrl->avg_rate_update = jiffies;
 		if (srctrl->tx_avg_rate_num > 0) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 535407d..592581a 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -9,6 +9,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/jiffies.h>
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
@@ -801,7 +802,7 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
 		    compare_ether_addr(hdr->addr2, f_hdr->addr2) != 0)
 			continue;
 
-		if (entry->first_frag_time + 2 * HZ < jiffies) {
+		if (time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
 			__skb_queue_purge(&entry->skb_list);
 			continue;
 		}
-- 
1.5.4.3

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