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i40evf: Fix turning TSO, GSO and GRO on after 

This patch fixes the problem where each MTU change turns TSO,
GSO and GRO on from off state.

Now when TSO, GSO or GRO is turned off, MTU change does not
turn them on.

Signed-off-by: Paweł Jabłoński <pawel.jablonski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Paweł Jabłoński 2018-04-20 01:41:36 -07:00 committed by Jeff Kirsher
parent 6ee4d32255
commit e4062894d5
1 changed files with 18 additions and 0 deletions
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18
drivers/net/ethernet/intel/i40evf/i40evf_main.c
View File

@ -3357,6 +3357,24 @@ int i40evf_process_config(struct i40evf_adapter *adapter)
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN)
netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
/* Do not turn on offloads when they are requested to be turned off.
* TSO needs minimum 576 bytes to work correctly.
*/
if (netdev->wanted_features) {
if (!(netdev->wanted_features & NETIF_F_TSO) ||
netdev->mtu < 576)
netdev->features &= ~NETIF_F_TSO;
if (!(netdev->wanted_features & NETIF_F_TSO6) ||
netdev->mtu < 576)
netdev->features &= ~NETIF_F_TSO6;
if (!(netdev->wanted_features & NETIF_F_TSO_ECN))
netdev->features &= ~NETIF_F_TSO_ECN;
if (!(netdev->wanted_features & NETIF_F_GRO))
netdev->features &= ~NETIF_F_GRO;
if (!(netdev->wanted_features & NETIF_F_GSO))
netdev->features &= ~NETIF_F_GSO;
}
adapter->vsi.id = adapter->vsi_res->vsi_id;
adapter->vsi.back = adapter;