netdev - [PATCH] bgmac: fix unaligned accesses to network headers

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Message-Id: <1361025154-11612-1-git-send-email-hauke@hauke-m.de>
Date:	Sat, 16 Feb 2013 15:32:34 +0100
From:	Hauke Mehrtens <hauke@...ke-m.de>
To:	davem@...emloft.net
Cc:	zajec5@...il.com, netdev@...r.kernel.org,
	Hauke Mehrtens <hauke@...ke-m.de>
Subject: [PATCH] bgmac: fix unaligned accesses to network headers

Without this patch I get many unaligned access warnings per packet,
this patches fixes them all. This should improve performance ony some
systems like mips.

Signed-off-by: Hauke Mehrtens <hauke@...ke-m.de>
---
 drivers/net/ethernet/broadcom/bgmac.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index d341090..f9b1bc8 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -301,8 +301,9 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
 			bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n",
 				  ring->start);
 		} else {
-			new_skb = netdev_alloc_skb(bgmac->net_dev, len);
+			new_skb = netdev_alloc_skb(bgmac->net_dev, len + 2);
 			if (new_skb) {
+				skb_reserve(new_skb, 2);
 				skb_put(new_skb, len);
 				skb_copy_from_linear_data_offset(skb, BGMAC_RX_FRAME_OFFSET,
 								 new_skb->data,
-- 
1.7.10.4

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