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Diffstat (limited to 'include/net/netlink.h')
-rw-r--r--include/net/netlink.h31
1 files changed, 15 insertions, 16 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h
index a5506c42f03..dfc3701dfcc 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -556,14 +556,12 @@ static inline void *nlmsg_get_pos(struct sk_buff *skb)
* @skb: socket buffer the message is stored in
* @mark: mark to trim to
*
- * Trims the message to the provided mark. Returns -1.
+ * Trims the message to the provided mark.
*/
-static inline int nlmsg_trim(struct sk_buff *skb, const void *mark)
+static inline void nlmsg_trim(struct sk_buff *skb, const void *mark)
{
if (mark)
skb_trim(skb, (unsigned char *) mark - skb->data);
-
- return -1;
}
/**
@@ -572,11 +570,11 @@ static inline int nlmsg_trim(struct sk_buff *skb, const void *mark)
* @nlh: netlink message header
*
* Removes the complete netlink message including all
- * attributes from the socket buffer again. Returns -1.
+ * attributes from the socket buffer again.
*/
-static inline int nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh)
+static inline void nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh)
{
- return nlmsg_trim(skb, nlh);
+ nlmsg_trim(skb, nlh);
}
/**
@@ -772,12 +770,13 @@ static inline int __nla_parse_nested_compat(struct nlattr *tb[], int maxtype,
const struct nla_policy *policy,
int len)
{
- if (nla_len(nla) < len)
- return -1;
- if (nla_len(nla) >= NLA_ALIGN(len) + sizeof(struct nlattr))
- return nla_parse_nested(tb, maxtype,
- nla_data(nla) + NLA_ALIGN(len),
- policy);
+ int nested_len = nla_len(nla) - NLA_ALIGN(len);
+
+ if (nested_len < 0)
+ return -EINVAL;
+ if (nested_len >= nla_attr_size(0))
+ return nla_parse(tb, maxtype, nla_data(nla) + NLA_ALIGN(len),
+ nested_len, policy);
memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1));
return 0;
}
@@ -1079,11 +1078,11 @@ static inline int nla_nest_compat_end(struct sk_buff *skb, struct nlattr *start)
* @start: container attribute
*
* Removes the container attribute and including all nested
- * attributes. Returns -1.
+ * attributes. Returns -EMSGSIZE
*/
-static inline int nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
+static inline void nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
{
- return nlmsg_trim(skb, start);
+ nlmsg_trim(skb, start);
}
/**