netdev - [PATCH net-next] e1000: fix skb truesize underestimation

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Message-ID: <1318528422.2393.55.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Thu, 13 Oct 2011 19:53:42 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [PATCH net-next] e1000: fix skb truesize underestimation

e1000 allocates a full 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>
---
 drivers/net/ethernet/intel/e1000/e1000_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index a42421f..7b54d72 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -3737,7 +3737,7 @@ static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
 	bi->page = NULL;
 	skb->len += length;
 	skb->data_len += length;
-	skb->truesize += length;
+	skb->truesize += PAGE_SIZE;
 }
 
 /**


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