net: common metrics init helper for dst_entry
ipv4 and ipv6 both use refcounted metrics if FIB entries have metrics set.
Move the common initialization code to a helper and use for both protocols.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip.h b/include/net/ip.h
index 8fdd58c..f9a7125 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -429,6 +429,18 @@ static inline void ip_fib_metrics_put(struct dst_metrics *fib_metrics)
kfree(fib_metrics);
}
+/* ipv4 and ipv6 both use refcounted metrics if it is not the default */
+static inline
+void ip_dst_init_metrics(struct dst_entry *dst, struct dst_metrics *fib_metrics)
+{
+ dst_init_metrics(dst, fib_metrics->metrics, true);
+
+ if (fib_metrics != &dst_default_metrics) {
+ dst->_metrics |= DST_METRICS_REFCOUNTED;
+ refcount_inc(&fib_metrics->refcnt);
+ }
+}
+
u32 ip_idents_reserve(u32 hash, int segs);
void __ip_select_ident(struct net *net, struct iphdr *iph, int segs);
