net: hyperv: convert to use .get_rx_ring_count

Convert the hyperv netvsc driver to use the new .get_rx_ring_count
ethtool operation instead of implementing .get_rxnfc solely for handling
ETHTOOL_GRXRINGS command. This simplifies the code by replacing the
switch statement with a direct return of the queue count.

The new callback provides the same functionality in a more direct way,
following the ongoing ethtool API modernization.

Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20251121-hyperv_gxrings-v1-1-31293104953b@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 39c892e46cb017df4fe6d969d8209013d8f8ea82..3d47d749ef9f1f44840cc8a0609a42f89a1870ad 100644 (file)
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -1624,22 +1624,15 @@ netvsc_get_rxfh_fields(struct net_device *ndev,
        return 0;
 }
 
-static int
-netvsc_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
-                u32 *rules)
+static u32 netvsc_get_rx_ring_count(struct net_device *dev)
 {
        struct net_device_context *ndc = netdev_priv(dev);
        struct netvsc_device *nvdev = rtnl_dereference(ndc->nvdev);
 
        if (!nvdev)
-               return -ENODEV;
-
-       switch (info->cmd) {
-       case ETHTOOL_GRXRINGS:
-               info->data = nvdev->num_chn;
                return 0;
-       }
-       return -EOPNOTSUPP;
+
+       return nvdev->num_chn;
 }
 
 static int
@@ -1969,7 +1962,7 @@ static const struct ethtool_ops ethtool_ops = {
        .get_channels   = netvsc_get_channels,
        .set_channels   = netvsc_set_channels,
        .get_ts_info    = ethtool_op_get_ts_info,
-       .get_rxnfc      = netvsc_get_rxnfc,
+       .get_rx_ring_count = netvsc_get_rx_ring_count,
        .get_rxfh_key_size = netvsc_get_rxfh_key_size,
        .get_rxfh_indir_size = netvsc_rss_indir_size,
        .get_rxfh       = netvsc_get_rxfh,