net: add busy_poll device feature
Currently there is no way how to find out if a device supports busy
polling. So add a feature and make it dependent on ndo_busy_poll
existence.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 30071de..640ba0e 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -97,6 +97,7 @@
[NETIF_F_RXFCS_BIT] = "rx-fcs",
[NETIF_F_RXALL_BIT] = "rx-all",
[NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
+ [NETIF_F_BUSY_POLL_BIT] = "busy-poll",
};
static int ethtool_get_features(struct net_device *dev, void __user *useraddr)