ipv6: Demark default hoplimit as zero. (a02e4b7d) · Commits · 戴 / test

This is for consistency with ipv4. Using "-1" makes no sense. It was made this way a long time ago merely to be consistent with how the ipv6 socket hoplimit "default" is stored. Signed-off-by:

David S. Miller <davem@davemloft.net>

net/ipv6/route.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -1105,7 +1105,7 @@ static int ipv6_get_mtu(struct net_device *dev)
		int ip6_dst_hoplimit(struct dst_entry *dst)
		{
		int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);
		if (hoplimit < 0) {
		if (hoplimit == 0) {
		struct net_device *dev = dst->dev;
		struct inet6_dev *idev;

		@@ -1310,8 +1310,6 @@ install_route:
		}
		}

		if (dst_metric_raw(&rt->dst, RTAX_HOPLIMIT) == 0)
		dst_metric_set(&rt->dst, RTAX_HOPLIMIT, -1);
		if (!dst_mtu(&rt->dst))
		dst_metric_set(&rt->dst, RTAX_MTU, ipv6_get_mtu(dev));
		if (!dst_metric(&rt->dst, RTAX_ADVMSS))

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