[RTNETLINK]: Add rtnl_put_cacheinfo() to unify some code

[net-next-2.6.git] / net / core / rtnetlink.c

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 0cb4d9e53a0771d6424f3144dc837939acbcca87..e76539a5eb5e09e79939fef2e4d96bd9449c1a7b 100644 (file)
--- 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)
 {