netdev - [PATCH RFC 4/6] tun: orphan frags on xmit

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Message-ID: <248cee8310a8d41b58b988dfea94e75ee79c6647.1336397823.git.mst@redhat.com>
Date:	Mon, 7 May 2012 16:54:47 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
Cc:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"eric.dumazet@...il.com" <eric.dumazet@...il.com>
Subject: [PATCH RFC 4/6] tun: orphan frags on xmit

tun xmit is actually receive of the internal tun
socket. Orphan the frags same as we do for normal rx path.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 drivers/net/tun.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index bb8c72c..1ccbfd0 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -414,6 +414,8 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	/* Orphan the skb - required as we might hang on to it
 	 * for indefinite time. */
+	if (unlikely(skb_orphan_frags(skb, GFP_ATOMIC)))
+		goto drop;
 	skb_orphan(skb);
 
 	/* Enqueue packet */
-- 
MST

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