Merge branch 'linus' into x86/cleanups

[linux-2.6-omap-h63xx.git] / net / netlink / attr.c

diff --git a/net/netlink/attr.c b/net/netlink/attr.c
index ec39d12c2423347463e766fc83bda5ef9861901a..47bbf45ae5d7905e05487955d77832e03915f215 100644 (file)
--- a/net/netlink/attr.c
+++ b/net/netlink/attr.c
@@ -400,13 +400,13 @@ void __nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
  * @attrlen: length of attribute payload
  * @data: head of attribute payload
  *
- * Returns -1 if the tailroom of the skb is insufficient to store
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
  * the attribute header and payload.
  */
 int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
 {
        if (unlikely(skb_tailroom(skb) < nla_total_size(attrlen)))
-               return -1;
+               return -EMSGSIZE;
 
        __nla_put(skb, attrtype, attrlen, data);
        return 0;
@@ -418,18 +418,36 @@ int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
  * @attrlen: length of attribute payload
  * @data: head of attribute payload
  *
- * Returns -1 if the tailroom of the skb is insufficient to store
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
  * the attribute payload.
  */
 int nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
 {
        if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
-               return -1;
+               return -EMSGSIZE;
 
        __nla_put_nohdr(skb, attrlen, data);
        return 0;
 }
 
+/**
+ * nla_append - Add a netlink attribute without header or padding
+ * @skb: socket buffer to add attribute to
+ * @attrlen: length of attribute payload
+ * @data: head of attribute payload
+ *
+ * Returns -EMSGSIZE if the tailroom of the skb is insufficient to store
+ * the attribute payload.
+ */
+int nla_append(struct sk_buff *skb, int attrlen, const void *data)
+{
+       if (unlikely(skb_tailroom(skb) < NLA_ALIGN(attrlen)))
+               return -EMSGSIZE;
+
+       memcpy(skb_put(skb, attrlen), data, attrlen);
+       return 0;
+}
+
 EXPORT_SYMBOL(nla_validate);
 EXPORT_SYMBOL(nla_parse);
 EXPORT_SYMBOL(nla_find);
@@ -445,3 +463,4 @@ EXPORT_SYMBOL(nla_put_nohdr);
 EXPORT_SYMBOL(nla_memcpy);
 EXPORT_SYMBOL(nla_memcmp);
 EXPORT_SYMBOL(nla_strcmp);
+EXPORT_SYMBOL(nla_append);