net: Fix too optimistic NETIF_F_HW_CSUM features
NETIF_F_HW_CSUM is a superset of NETIF_F_IP_CSUM+NETIF_F_IPV6_CSUM, but
some drivers miss the difference. Fix this and also fix UFO dependency
on checksumming offload as it makes the same mistake in assumptions.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 956a9f4..d5bc2881 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1171,7 +1171,9 @@
return -EFAULT;
if (edata.data && !(dev->features & NETIF_F_SG))
return -EINVAL;
- if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+ if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
+ (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+ == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
return -EINVAL;
return dev->ethtool_ops->set_ufo(dev, edata.data);
}