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authorDavid Ahern <dsahern@gmail.com>2019-06-21 16:27:16 -0700
committerDavid S. Miller <davem@davemloft.net>2019-06-26 13:14:59 -0700
commitc22a133a83ce64949dc35156eaefeda5a1e12bc3 (patch)
treea673724f126f4391966caea67adf1fef78a5eeae /net/core/rtnetlink.c
parent4191faa25384afee063568437b0b255ef0c75237 (diff)
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: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r--net/core/rtnetlink.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 8ac81630ab5c..1ee6460f8275 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -751,6 +751,10 @@ int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
struct nlattr *mx;
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);
if (mx == NULL)
return -ENOBUFS;