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authorDavid Ahern <dsahern@gmail.com>2018-10-05 06:07:53 +0300
committerDavid S. Miller <davem@davemloft.net>2018-10-05 07:54:19 +0300
commite1255ed4b6dafd9966c99cde5105891cc1ac70df (patch)
treea8118d6d76a79bc59220ce115663b9567365ce1a /include/net/ip.h
parentcc5f0eb2164f9aa11fe631f8d905192e0233e262 (diff)
downloadlinux-e1255ed4b6dafd9966c99cde5105891cc1ac70df.tar.xz
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>
Diffstat (limited to 'include/net/ip.h')
-rw-r--r--include/net/ip.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/ip.h b/include/net/ip.h
index 8fdd58ce580d..f9a7125b4bda 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);