1 files changed, 19 insertions, 1 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 1fae30af91f3..c91476ce314a 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -261,7 +261,7 @@ enum rtattr_type_t
        RTA_FLOW,
        RTA_CACHEINFO,
        RTA_SESSION,
-        RTA_MP_ALGO,
+        RTA_MP_ALGO, /* no longer used */
        RTA_TABLE,
        __RTA_MAX
 };
@@ -570,10 +570,16 @@ static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
 }
 extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len);
+extern int __rtattr_parse_nested_compat(struct rtattr *tb[], int maxattr,
+                                        struct rtattr *rta, int len);
 #define rtattr_parse_nested(tb, max, rta) \
        rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta)))
+#define rtattr_parse_nested_compat(tb, max, rta, data, len) \
+({      data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
+        __rtattr_parse_nested_compat(tb, max, rta, len); })
 extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo);
 extern int rtnl_unicast(struct sk_buff *skb, u32 pid);
 extern int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
@@ -638,6 +644,18 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi
 ({      (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
        (skb)->len; })
+#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
+({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
+        RTA_PUT(skb, type, attrlen, data); \
+        RTA_NEST(skb, type); \
+        __start; })
+#define RTA_NEST_COMPAT_END(skb, start) \
+({      struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
+        (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
+        RTA_NEST_END(skb, __nest); \
+        (skb)->len; })
 #define RTA_NEST_CANCEL(skb, start) \
 ({      if (start) \
                skb_trim(skb, (unsigned char *) (start) - (skb)->data); \