target/linux/layerscape/patches-5.4/701-net-0021-sdk_dpaa-ls1043a-errata-resplit-the-skb-after-copy.patch

   1 From 3532c45dc451d2bb7d88a33a554a86422828c9aa Mon Sep 17 00:00:00 2001
   2 From: Camelia Groza <camelia.groza@nxp.com>
   3 Date: Thu, 13 Jul 2017 17:26:02 +0300
   4 Subject: [PATCH] sdk_dpaa: ls1043a errata: resplit the skb after copy
   5
   6 Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
   7 ---
   8  drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 5 +++++
   9  1 file changed, 5 insertions(+)
  10
  11 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  12 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  13 @@ -1016,6 +1016,7 @@ int __hot dpa_tx_extended(struct sk_buff
  14  #endif /* CONFIG_FSL_DPAA_TS */
  15
  16  #ifndef CONFIG_PPC
  17 +resplit_4k:
  18         if (unlikely(dpaa_errata_a010022)) {
  19                 skb = split_skb_at_4k_boundaries(skb);
  20                 if (!skb)
  21 @@ -1062,6 +1063,10 @@ int __hot dpa_tx_extended(struct sk_buff
  22                         struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC);
  23                         kfree_skb(skb);
  24                         skb = nskb;
  25 +#ifndef CONFIG_PPC
  26 +                       if (unlikely(dpaa_errata_a010022))
  27 +                               goto resplit_4k;
  28 +#endif
  29                         /* skb_copy() has now linearized the skbuff. */
  30                 } else if (unlikely(nonlinear)) {
  31                         /* We are here because the egress skb contains