On Mon, 18 Feb 2019 19:21:44 +0100 (CET), Michal Kubecek wrote:

+/* create skb for a reply and fill device identification
+ * payload: payload length (without netlink and genetlink header)
+ * dev:     device the reply is about (may be null)
+ * cmd:     ETHNL_CMD_* command for reply
+ * info:    info for the received packet we respond to
+ * ehdrp:   place to store payload pointer returned by genlmsg_new()
+ * returns: skb or null on error
+ */

nit: why not correct kdoc?

+struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd,
+				 u16 dev_attrtype, struct genl_info *info,
+				 void **ehdrp)
+{
+	void *ehdr;
+	struct sk_buff *rskb;

nit: reverse xmas tree