netdev - [PATCH net-next] bnx2: fix skb truesize underestimation

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Date:	Thu, 13 Oct 2011 19:50:19 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>, Michael Chan <mchan@...adcom.com>
Subject: [PATCH net-next] bnx2: fix skb truesize underestimation

bnx2 allocates a full page per 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/broadcom/bnx2.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index 3c221be..6ff7636 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -3051,7 +3051,6 @@ bnx2_rx_skb(struct bnx2 *bp, struct bnx2_rx_ring_info *rxr, struct sk_buff *skb,
 						&skb_shinfo(skb)->frags[i - 1];
 					frag->size -= tail;
 					skb->data_len -= tail;
-					skb->truesize -= tail;
 				}
 				return 0;
 			}
@@ -3083,7 +3082,7 @@ bnx2_rx_skb(struct bnx2 *bp, struct bnx2_rx_ring_info *rxr, struct sk_buff *skb,
 
 			frag_size -= frag_len;
 			skb->data_len += frag_len;
-			skb->truesize += frag_len;
+			skb->truesize += PAGE_SIZE;
 			skb->len += frag_len;
 
 			pg_prod = NEXT_RX_BD(pg_prod);


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