netdev - [PATCH v2 net-next 3/5] dp83640: Prune rx timestamp list before reading from it

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Message-ID: <1446539648-8355-4-git-send-email-stefan.sorensen@spectralink.com>
Date:	Tue, 3 Nov 2015 09:34:06 +0100
From:	Stefan Sørensen 
	<stefan.sorensen@...ctralink.com>
To:	<davem@...emloft.net>
CC:	<netdev@...r.kernel.org>, <richardcochran@...il.com>,
	Stefan Sørensen 
	<stefan.sorensen@...ctralink.com>
Subject: [PATCH v2 net-next 3/5] dp83640: Prune rx timestamp list before reading from it

The list of rx timestamps are currently only pruned of old entries when a
new entry is inserted. If no new entries are added, old timestamps may
survive beyond their lifetime, possible causing them to be attached to
packets with the same sequence number after a rollover.

Signed-off-by: Stefan Sørensen <stefan.sorensen@...ctralink.com>
---
 drivers/net/phy/dp83640.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c
index 69a2f56..39ac633 100644
--- a/drivers/net/phy/dp83640.c
+++ b/drivers/net/phy/dp83640.c
@@ -1398,6 +1398,7 @@ static bool dp83640_rxtstamp(struct phy_device *phydev,
 		return false;
 
 	spin_lock_irqsave(&dp83640->rx_lock, flags);
+	prune_rx_ts(dp83640);
 	list_for_each_safe(this, next, &dp83640->rxts) {
 		rxts = list_entry(this, struct rxts, list);
 		if (match(skb, type, rxts)) {
-- 
2.5.0

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