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i40e/i40evf: Clean up feature flags
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The feature flags list for i40e and i40evf is beginning to become pretty
massive.  I plan to add another 4 or so features to these drivers and
duplicating the flags for each and every flags list is becoming a bit
repetitive.

The primary change here is that we now build our features list around
hw_encap_features.  After that we assign that to vlan_features,
hw_features, and finally map that onto features.  In addition we end up
throwing features onto hw_encap_features that end up having no effect such
as the Rx offloads and SCTP_CRC.  However that should have no impact and
makes things a bit easier for us as hw_encap_features is one of the less
updated features maps available.

For i40evf I went through and sanity checked a few features as well.
Specifically RXCSUM was being set as a read-only feature which didn't make
much sense.  I have updated things so we can clear the NETIF_F_RXCSUM flag
since that is really a software feature and not a hardware one anyway so
disabling it is just a matter of ignoring the result from the hardware.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Alexander Duyck authored and Jeff Kirsher committed Apr 26, 2016
1 parent 6a025a5 commit b0fe330
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Showing 2 changed files with 58 additions and 69 deletions.
61 changes: 26 additions & 35 deletions drivers/net/ethernet/intel/i40e/i40e_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9111,40 +9111,36 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
np = netdev_priv(netdev);
np->vsi = vsi;

netdev->hw_enc_features |= NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM |
NETIF_F_TSO |
NETIF_F_TSO6 |
NETIF_F_TSO_ECN |
NETIF_F_GSO_GRE |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
netdev->hw_enc_features |= NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM |
NETIF_F_HIGHDMA |
NETIF_F_SOFT_FEATURES |
NETIF_F_TSO |
NETIF_F_TSO_ECN |
NETIF_F_TSO6 |
NETIF_F_GSO_GRE |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_RXHASH |
NETIF_F_RXCSUM |
0;

netdev->features = NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_HIGHDMA |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_GRE |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_IPV6_CSUM |
NETIF_F_TSO |
NETIF_F_TSO_ECN |
NETIF_F_TSO6 |
NETIF_F_RXCSUM |
NETIF_F_RXHASH |
0;
if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
netdev->hw_enc_features ^= NETIF_F_GSO_UDP_TUNNEL_CSUM;

/* record features VLANs can make use of */
netdev->vlan_features |= netdev->hw_enc_features;

if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
netdev->features |= NETIF_F_NTUPLE;
if (pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
netdev->features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
netdev->hw_features |= NETIF_F_NTUPLE;

netdev->hw_features |= netdev->hw_enc_features |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;

/* copy netdev features into list of user selectable features */
netdev->hw_features |= netdev->features;
netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;

if (vsi->type == I40E_VSI_MAIN) {
SET_NETDEV_DEV(netdev, &pf->pdev->dev);
Expand Down Expand Up @@ -9183,12 +9179,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)

ether_addr_copy(netdev->dev_addr, mac_addr);
ether_addr_copy(netdev->perm_addr, mac_addr);
/* vlan gets same features (except vlan offload)
* after any tweaks for specific VSI types
*/
netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER);

netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->priv_flags |= IFF_SUPP_NOFCS;
/* Setup netdev TC information */
Expand Down
66 changes: 32 additions & 34 deletions drivers/net/ethernet/intel/i40evf/i40evf_main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2337,40 +2337,38 @@ int i40evf_process_config(struct i40evf_adapter *adapter)
return -ENODEV;
}

netdev->features |= NETIF_F_HIGHDMA |
NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_IPV6_CSUM |
NETIF_F_TSO |
NETIF_F_TSO6 |
NETIF_F_TSO_ECN |
NETIF_F_GSO_GRE |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_RXCSUM |
NETIF_F_GRO;

netdev->hw_enc_features |= NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM |
NETIF_F_TSO |
NETIF_F_TSO6 |
NETIF_F_TSO_ECN |
NETIF_F_GSO_GRE |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM;

if (adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE)
netdev->features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;

/* always clear VLAN features because they can change at every reset */
netdev->features &= ~(I40EVF_VLAN_FEATURES);
/* copy netdev features into list of user selectable features */
netdev->hw_features |= netdev->features;

if (vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) {
netdev->vlan_features = netdev->features;
netdev->features |= I40EVF_VLAN_FEATURES;
}
netdev->hw_enc_features |= NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM |
NETIF_F_HIGHDMA |
NETIF_F_SOFT_FEATURES |
NETIF_F_TSO |
NETIF_F_TSO_ECN |
NETIF_F_TSO6 |
NETIF_F_GSO_GRE |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_RXHASH |
NETIF_F_RXCSUM |
0;

if (!(adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE))
netdev->hw_enc_features ^= NETIF_F_GSO_UDP_TUNNEL_CSUM;

/* record features VLANs can make use of */
netdev->vlan_features |= netdev->hw_enc_features;

/* Write features and hw_features separately to avoid polluting
* with, or dropping, features that are set when we registgered.
*/
netdev->hw_features |= netdev->hw_enc_features;

netdev->features |= netdev->hw_enc_features | I40EVF_VLAN_FEATURES;

/* disable VLAN features if not supported */
if (!(vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN))
netdev->features ^= I40EVF_VLAN_FEATURES;

adapter->vsi.id = adapter->vsi_res->vsi_id;

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