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Commit c22a133a authored by David Ahern's avatar David Ahern Committed by David S. Miller
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rtnetlink: skip metrics loop for dst_default_metrics 



dst_default_metrics has all of the metrics initialized to 0, so nothing
will be added to the skb in rtnetlink_put_metrics. Avoid the loop if
metrics is from dst_default_metrics.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4191faa2

net/core/rtnetlink.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -751,6 +751,10 @@ int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) 
	struct nlattr *mx;

	struct nlattr *mx;

	int i, valid = 0;

	int i, valid = 0;





	/* nothing is dumped for dst_default_metrics, so just skip the loop */

	if (metrics == dst_default_metrics.metrics)

		return 0;



	mx = nla_nest_start_noflag(skb, RTA_METRICS);

	mx = nla_nest_start_noflag(skb, RTA_METRICS);

	if (mx == NULL)

	if (mx == NULL)

		return -ENOBUFS;

		return -ENOBUFS;