target/linux/layerscape/patches-5.4/701-net-0081-sdk_dpaa-ls1043a-errata-align-skb_shinfo.patch

   1 From 7c96998ebc8cc9c71216b80de3f77114f29b148a Mon Sep 17 00:00:00 2001
   2 From: Camelia Groza <camelia.groza@nxp.com>
   3 Date: Mon, 17 Sep 2018 12:39:24 +0300
   4 Subject: [PATCH] sdk_dpaa: ls1043a errata: align skb_shinfo
   5
   6 Make sure the skb shared info is cache-line aligned when realigning
   7 egress frames.
   8
   9 Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
  10 ---
  11  drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 4 +++-
  12  1 file changed, 3 insertions(+), 1 deletion(-)
  13
  14 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  15 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  16 @@ -830,8 +830,10 @@ static struct sk_buff *a010022_realign_s
  17
  18         /* For the new skb we only need the old one's data (both non-paged and
  19          * paged). We can skip the old tailroom.
  20 +        *
  21 +        * Make sure the skb_shinfo is cache-line aligned.
  22          */
  23 -       nsize = headroom + skb->len +
  24 +       nsize = SMP_CACHE_BYTES + DPA_SKB_SIZE(headroom + skb->len) +
  25                 SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
  26
  27         /* Reserve enough memory to accommodate Jumbo frames */