target/linux/layerscape/patches-5.4/701-net-0063-sdk_dpaa-propagate-the-skb-ownership-information.patch

   1 From 1a5fe4c83c7ba997a7fc433fcfc4818d48689ecc Mon Sep 17 00:00:00 2001
   2 From: Madalin Bucur <madalin.bucur@nxp.com>
   3 Date: Wed, 25 Apr 2018 18:49:32 +0300
   4 Subject: [PATCH] sdk_dpaa: propagate the skb ownership information
   5
   6 Some skbs on the Tx path may be reallocated by the driver
   7 due to insufficient headroom, in which case the socket
   8 value gets lost.
   9
  10 Make sure we propagate the skb ownership information to the
  11 new skb, since it's needed by the Tx timestamp function in
  12 the kernel.
  13
  14 Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
  15 Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
  16 ---
  17  drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 5 +++++
  18  1 file changed, 5 insertions(+)
  19
  20 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  21 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  22 @@ -1113,6 +1113,11 @@ int __hot dpa_tx_extended(struct sk_buff
  23                                 percpu_stats->tx_errors++;
  24                                 return NETDEV_TX_OK;
  25                         }
  26 +
  27 +                       /* propagate the skb ownership information */
  28 +                       if (skb->sk)
  29 +                               skb_set_owner_w(skb_new, skb->sk);
  30 +
  31                         dev_kfree_skb(skb);
  32                         skb = skb_new;
  33                 }