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-rw-r--r--include/linux/netlink.h1
-rw-r--r--include/net/fib_rules.h1
-rw-r--r--include/net/netlink.h9
3 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 66411622e06e..e61e1e138421 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -174,6 +174,7 @@ int netlink_sendskb(struct sock *sk, struct sk_buff *skb, int protocol);
*/
#define NLMSG_GOODORDER 0
#define NLMSG_GOODSIZE (SKB_MAX_ORDER(0, NLMSG_GOODORDER))
+#define NLMSG_DEFAULT_SIZE (NLMSG_GOODSIZE - NLMSG_HDRLEN)
struct netlink_callback
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index e4ba781d289f..bc3c26494c3d 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -52,6 +52,7 @@ struct fib_rules_ops
struct nlmsghdr *,
struct fib_rule_hdr *);
u32 (*default_pref)(void);
+ size_t (*nlmsg_payload)(struct fib_rule *);
int nlgroup;
struct nla_policy *policy;
diff --git a/include/net/netlink.h b/include/net/netlink.h
index ce5cba19c393..30021339157c 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -500,14 +500,15 @@ static inline struct nlmsghdr *nlmsg_put_answer(struct sk_buff *skb,
/**
* nlmsg_new - Allocate a new netlink message
- * @size: maximum size of message
+ * @payload: size of the message payload
* @flags: the type of memory to allocate.
*
- * Use NLMSG_GOODSIZE if size isn't know and you need a good default size.
+ * Use NLMSG_DEFAULT_SIZE if the size of the payload isn't known
+ * and a good default is needed.
*/
-static inline struct sk_buff *nlmsg_new(int size, gfp_t flags)
+static inline struct sk_buff *nlmsg_new(size_t payload, gfp_t flags)
{
- return alloc_skb(size, flags);
+ return alloc_skb(nlmsg_total_size(payload), flags);
}
/**