[GENL]: Add genlmsg_new() to allocate generic netlink messages

[platform/kernel/linux-starfive.git] / include / net / genetlink.h

diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 4a38d85..2010465 100644 (file)
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -169,4 +169,33 @@ static inline int genlmsg_len(const struct genlmsghdr *gnlh)
        return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN);
 }
 
+/**
+ * genlmsg_msg_size - length of genetlink message not including padding
+ * @payload: length of message payload
+ */
+static inline int genlmsg_msg_size(int payload)
+{
+       return GENL_HDRLEN + payload;
+}
+
+/**
+ * genlmsg_total_size - length of genetlink message including padding
+ * @payload: length of message payload
+ */
+static inline int genlmsg_total_size(int payload)
+{
+       return NLMSG_ALIGN(genlmsg_msg_size(payload));
+}
+
+/**
+ * genlmsg_new - Allocate a new generic netlink message
+ * @payload: size of the message payload
+ * @flags: the type of memory to allocate.
+ */
+static inline struct sk_buff *genlmsg_new(size_t payload, gfp_t flags)
+{
+       return nlmsg_new(genlmsg_total_size(payload), flags);
+}
+
+
 #endif /* __NET_GENERIC_NETLINK_H */