[DECNET] address: Convert to new netlink interface
Extends the netlink interface to support the __le16 type and
converts address addition, deletion and, dumping to use the
new netlink interface.
Fixes multiple occasions of possible illegal memory references
due to not validated netlink attributes.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/netlink.h b/include/net/netlink.h
index 3002133..fd75fd6 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -829,6 +829,9 @@
#define NLA_PUT_U16(skb, attrtype, value) \
NLA_PUT_TYPE(skb, u16, attrtype, value)
+#define NLA_PUT_LE16(skb, attrtype, value) \
+ NLA_PUT_TYPE(skb, __le16, attrtype, value)
+
#define NLA_PUT_U32(skb, attrtype, value) \
NLA_PUT_TYPE(skb, u32, attrtype, value)
@@ -875,6 +878,15 @@
}
/**
+ * nla_get_le16 - return payload of __le16 attribute
+ * @nla: __le16 netlink attribute
+ */
+static inline __le16 nla_get_le16(struct nlattr *nla)
+{
+ return *(__le16 *) nla_data(nla);
+}
+
+/**
* nla_get_u8 - return payload of u8 attribute
* @nla: u8 netlink attribute
*/