netdev - [PATCH net-next] sky2: fix skb truesize underestimation

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Message-ID: <1318540290.2533.22.camel@edumazet-laptop>
Date:	Thu, 13 Oct 2011 23:11:30 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	Stephen Hemminger <shemminger@...tta.com>
Subject: [PATCH net-next] sky2: fix skb truesize underestimation

sky2 allocates a page per skb fragment. We must account
PAGE_SIZE increments on skb->truesize, not the actual frag length.

Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
CC: Stephen Hemminger <shemminger@...tta.com>
---
 drivers/net/ethernet/marvell/sky2.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 6895e3b..9263490 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -2486,7 +2486,7 @@ static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space,
 
 			frag->size = size;
 			skb->data_len += size;
-			skb->truesize += size;
+			skb->truesize += PAGE_SIZE;
 			skb->len += size;
 			length -= size;
 		}


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