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-rw-r--r--net/core/rtnetlink.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 0cb4d9e53a0..e76539a5eb5 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -212,6 +212,26 @@ nla_put_failure:
return nla_nest_cancel(skb, mx);
}
+int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
+ u32 ts, u32 tsage, long expires, u32 error)
+{
+ struct rta_cacheinfo ci = {
+ .rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse),
+ .rta_used = dst->__use,
+ .rta_clntref = atomic_read(&(dst->__refcnt)),
+ .rta_error = error,
+ .rta_id = id,
+ .rta_ts = ts,
+ .rta_tsage = tsage,
+ };
+
+ if (expires)
+ ci.rta_expires = jiffies_to_clock_t(expires);
+
+ return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
+}
+
+EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
static void set_operstate(struct net_device *dev, unsigned char transition)
{