target/linux/kirkwood/patches-4.3/200-disable-tso.patch

   1 From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
   2 Subject: [PATCH] net: mv643xx_eth: Make TSO disabled by default
   3
   4 Data corruption has been observed to be produced by TSO. For instance,
   5 accessing files on a NFS-server with TSO enabled results in different data
   6 transferred each time.
   7
   8 This has been observed only on Kirkwood platforms, i.e. with the mv643xx_eth
   9 driver. Same tests on platforms using the mvneta ethernet driver have
  10 passed without errors.
  11
  12 Make TSO disabled by default for now, until we can found a proper fix
  13 for the regression.
  14
  15 Fixes: 3ae8f4e0b98 ('net: mv643xx_eth: Implement software TSO')
  16 Reported-by: Slawomir Gajzner <slawomir.gajzner@gmail.com>
  17 Reported-by: Julien D'Ascenzio <jdascenzio@yahoo.fr>
  18 Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
  19 ---
  20 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c
  21 +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
  22 @@ -3178,11 +3178,11 @@ static int mv643xx_eth_probe(struct plat
  23         dev->watchdog_timeo = 2 * HZ;
  24         dev->base_addr = 0;
  25
  26 -       dev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO;
  27 +       dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
  28         dev->vlan_features = dev->features;
  29
  30         dev->features |= NETIF_F_RXCSUM;
  31 -       dev->hw_features = dev->features;
  32 +       dev->hw_features = dev->features | NETIF_F_TSO;
  33
  34         dev->priv_flags |= IFF_UNICAST_FLT;
  35         dev->gso_max_segs = MV643XX_MAX_TSO_SEGS;