netvsc: report rss field values

Report current components used in RSS hash.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index b158cab678b321a28562b3d96af81b88fb6936c3..6ab8b52af965127424cfa01a51ff600a1b2ae448 100644 (file)
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -1008,6 +1008,30 @@ static void netvsc_get_strings(struct net_device *dev, u32 stringset, u8 *data)
        }
 }
 
+static int
+netvsc_get_rss_hash_opts(struct netvsc_device *nvdev,
+                        struct ethtool_rxnfc *info)
+{
+       info->data = RXH_IP_SRC | RXH_IP_DST;
+
+       switch (info->flow_type) {
+       case TCP_V4_FLOW:
+       case TCP_V6_FLOW:
+               info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+               /* fallthrough */
+       case UDP_V4_FLOW:
+       case UDP_V6_FLOW:
+       case IPV4_FLOW:
+       case IPV6_FLOW:
+               break;
+       default:
+               info->data = 0;
+               break;
+       }
+
+       return 0;
+}
+
 static int
 netvsc_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
                 u32 *rules)
@@ -1019,6 +1043,9 @@ netvsc_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
        case ETHTOOL_GRXRINGS:
                info->data = nvdev->num_chn;
                return 0;
+
+       case ETHTOOL_GRXFH:
+               return netvsc_get_rss_hash_opts(nvdev, info);
        }
        return -EOPNOTSUPP;
 }