3 files changed, 33 insertions, 7 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 4a80d74975e8..dae3f9ec1154 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1594,13 +1594,16 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw);
 void ieee80211_scan_completed(struct ieee80211_hw *hw);
 
 /**
- * ieee80211_iterate_active_interfaces - iterate active interfaces
+ * ieee80211_iterate_active_interfaces- iterate active interfaces
  *
  * This function iterates over the interfaces associated with a given
  * hardware that are currently active and calls the callback for them.
+ * This function allows the iterator function to sleep, when the iterator
+ * function is atomic @ieee80211_iterate_active_interfaces_atomic can
+ * be used.
  *
  * @hw: the hardware struct of which the interfaces should be iterated over
- * @iterator: the iterator function to call, cannot sleep
+ * @iterator: the iterator function to call
  * @data: first argument of the iterator function
  */
 void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
@@ -1609,6 +1612,24 @@ void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
                                          void *data);
 
 /**
+ * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces
+ *
+ * This function iterates over the interfaces associated with a given
+ * hardware that are currently active and calls the callback for them.
+ * This function requires the iterator callback function to be atomic,
+ * if that is not desired, use @ieee80211_iterate_active_interfaces instead.
+ *
+ * @hw: the hardware struct of which the interfaces should be iterated over
+ * @iterator: the iterator function to call, cannot sleep
+ * @data: first argument of the iterator function
+ */
+void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw,
+                                                void (*iterator)(void *data,
+                                                    u8 *mac,
+                                                    struct ieee80211_vif *vif),
+                                                void *data);
+
+/**
  * ieee80211_start_tx_ba_session - Start a tx Block Ack session.
  * @hw: pointer as obtained from ieee80211_alloc_hw().
  * @ra: receiver address of the BA session recipient
diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index 9c451ff2f4f4..a01b7c4dc763 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -129,6 +129,10 @@ extern int 			ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
                                                            void __user *buffer,
                                                            size_t *lenp,
                                                            loff_t *ppos);
+int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl, int __user *name,
+                                 int nlen, void __user *oldval,
+                                 size_t __user *oldlenp,
+                                 void __user *newval, size_t newlen);
 #endif
 
 extern void                     inet6_ifinfo_notify(int event,
diff --git a/include/net/netlink.h b/include/net/netlink.h
index a5506c42f03c..112dcdf7e34e 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -772,12 +772,13 @@ static inline int __nla_parse_nested_compat(struct nlattr *tb[], int maxtype,
                                             const struct nla_policy *policy,
                                             int len)
 {
-        if (nla_len(nla) < len)
+        int nested_len = nla_len(nla) - NLA_ALIGN(len);
+
+        if (nested_len < 0)
                 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);
+        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;
 }