blackhole_netdev: use blackhole_netdev to invalidate dst entries
Use blackhole_netdev instead of 'lo' device with lower MTU when marking dst "dead". Signed-off-by: Mahesh Bandewar <maheshb@google.com> Tested-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -160,7 +160,7 @@ void dst_dev_put(struct dst_entry *dst)
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dst->ops->ifdown(dst, dev, true);
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dst->input = dst_discard;
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dst->output = dst_discard_out;
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dst->dev = dev_net(dst->dev)->loopback_dev;
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dst->dev = blackhole_netdev;
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dev_hold(dst->dev);
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dev_put(dev);
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}
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@ -1532,7 +1532,6 @@ static void ipv4_dst_destroy(struct dst_entry *dst)
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void rt_flush_dev(struct net_device *dev)
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{
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struct net *net = dev_net(dev);
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struct rtable *rt;
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int cpu;
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@ -1543,7 +1542,7 @@ void rt_flush_dev(struct net_device *dev)
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list_for_each_entry(rt, &ul->head, rt_uncached) {
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if (rt->dst.dev != dev)
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continue;
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rt->dst.dev = net->loopback_dev;
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rt->dst.dev = blackhole_netdev;
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dev_hold(rt->dst.dev);
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dev_put(dev);
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}
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@ -176,7 +176,7 @@ static void rt6_uncached_list_flush_dev(struct net *net, struct net_device *dev)
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}
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if (rt_dev == dev) {
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rt->dst.dev = loopback_dev;
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rt->dst.dev = blackhole_netdev;
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dev_hold(rt->dst.dev);
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dev_put(rt_dev);
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}
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