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From 7c96998ebc8cc9c71216b80de3f77114f29b148a Mon Sep 17 00:00:00 2001
From: Camelia Groza <camelia.groza@nxp.com>
Date: Mon, 17 Sep 2018 12:39:24 +0300
Subject: [PATCH] sdk_dpaa: ls1043a errata: align skb_shinfo
Make sure the skb shared info is cache-line aligned when realigning
egress frames.
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
---
drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
@@ -830,8 +830,10 @@ static struct sk_buff *a010022_realign_s
/* For the new skb we only need the old one's data (both non-paged and
* paged). We can skip the old tailroom.
+ *
+ * Make sure the skb_shinfo is cache-line aligned.
*/
- nsize = headroom + skb->len +
+ nsize = SMP_CACHE_BYTES + DPA_SKB_SIZE(headroom + skb->len) +
SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
/* Reserve enough memory to accommodate Jumbo frames */
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