[PATCH 04/18] netvsc: report rss field values

[Stephen Hemminger]

Report current components used in RSS hash.

Signed-off-by: Stephen Hemminger <sthem...@microsoft.com>
---
 drivers/net/hyperv/netvsc_drv.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index b158cab678b3..6ab8b52af965 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -1009,6 +1009,30 @@ 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;
 }
-- 
2.11.0