5 files changed, 24 insertions, 8 deletions
diff --git a/net/ethtool/debug.c b/net/ethtool/debug.c
index aaef4843e6ba..92599ad7b3c2 100644
--- a/net/ethtool/debug.c
+++ b/net/ethtool/debug.c
@@ -107,8 +107,9 @@ int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info)
 	if (ret < 0)
 		return ret;
 	dev = req_info.dev;
+	ret = -EOPNOTSUPP;
 	if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel)
-		return -EOPNOTSUPP;
+		goto out_dev;
 
 	rtnl_lock();
 	ret = ethnl_ops_begin(dev);
@@ -129,6 +130,7 @@ out_ops:
 	ethnl_ops_complete(dev);
 out_rtnl:
 	rtnl_unlock();
+out_dev:
 	dev_put(dev);
 	return ret;
 }
diff --git a/net/ethtool/linkinfo.c b/net/ethtool/linkinfo.c
index 5d16cb4e8693..6e9e0b590bb5 100644
--- a/net/ethtool/linkinfo.c
+++ b/net/ethtool/linkinfo.c
@@ -126,9 +126,10 @@ int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info)
 	if (ret < 0)
 		return ret;
 	dev = req_info.dev;
+	ret = -EOPNOTSUPP;
 	if (!dev->ethtool_ops->get_link_ksettings ||
 	    !dev->ethtool_ops->set_link_ksettings)
-		return -EOPNOTSUPP;
+		goto out_dev;
 
 	rtnl_lock();
 	ret = ethnl_ops_begin(dev);
@@ -162,6 +163,7 @@ out_ops:
 	ethnl_ops_complete(dev);
 out_rtnl:
 	rtnl_unlock();
+out_dev:
 	dev_put(dev);
 	return ret;
 }
diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c
index 96f20be64553..18cc37be2d9c 100644
--- a/net/ethtool/linkmodes.c
+++ b/net/ethtool/linkmodes.c
@@ -338,9 +338,10 @@ int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
 	if (ret < 0)
 		return ret;
 	dev = req_info.dev;
+	ret = -EOPNOTSUPP;
 	if (!dev->ethtool_ops->get_link_ksettings ||
 	    !dev->ethtool_ops->set_link_ksettings)
-		return -EOPNOTSUPP;
+		goto out_dev;
 
 	rtnl_lock();
 	ret = ethnl_ops_begin(dev);
@@ -370,6 +371,7 @@ out_ops:
 	ethnl_ops_complete(dev);
 out_rtnl:
 	rtnl_unlock();
+out_dev:
 	dev_put(dev);
 	return ret;
 }
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index 180c194fab07..fc9e0b806889 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -40,6 +40,7 @@ int ethnl_parse_header(struct ethnl_req_info *req_info,
 	struct nlattr *tb[ETHTOOL_A_HEADER_MAX + 1];
 	const struct nlattr *devname_attr;
 	struct net_device *dev = NULL;
+	u32 flags = 0;
 	int ret;
 
 	if (!header) {
@@ -50,8 +51,17 @@ int ethnl_parse_header(struct ethnl_req_info *req_info,
 			       ethnl_header_policy, extack);
 	if (ret < 0)
 		return ret;
-	devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME];
+	if (tb[ETHTOOL_A_HEADER_FLAGS]) {
+		flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]);
+		if (flags & ~ETHTOOL_FLAG_ALL) {
+			NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_HEADER_FLAGS],
+					    "unrecognized request flags");
+			nl_set_extack_cookie_u32(extack, ETHTOOL_FLAG_ALL);
+			return -EOPNOTSUPP;
+		}
+	}
 
+	devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME];
 	if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) {
 		u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]);
 
@@ -90,9 +100,7 @@ int ethnl_parse_header(struct ethnl_req_info *req_info,
 	}
 
 	req_info->dev = dev;
-	if (tb[ETHTOOL_A_HEADER_FLAGS])
-		req_info->flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]);
-
+	req_info->flags = flags;
 	return 0;
 }
 
diff --git a/net/ethtool/wol.c b/net/ethtool/wol.c
index e1b8a65b64c4..55e1ecaaf739 100644
--- a/net/ethtool/wol.c
+++ b/net/ethtool/wol.c
@@ -128,8 +128,9 @@ int ethnl_set_wol(struct sk_buff *skb, struct genl_info *info)
 	if (ret < 0)
 		return ret;
 	dev = req_info.dev;
+	ret = -EOPNOTSUPP;
 	if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol)
-		return -EOPNOTSUPP;
+		goto out_dev;
 
 	rtnl_lock();
 	ret = ethnl_ops_begin(dev);
@@ -172,6 +173,7 @@ out_ops:
 	ethnl_ops_complete(dev);
 out_rtnl:
 	rtnl_unlock();
+out_dev:
 	dev_put(dev);
 	return ret;
 }