David S. Miller d33e455337 net: Abstract default MTU metric calculation behind an accessor. ...

Like RTAX_ADVMSS, make the default calculation go through a dst_ops
method rather than caching the computation in the routing cache
entries.

Now dst metrics are pretty much left as-is when new entries are
created, thus optimizing metric sharing becomes a real possibility.

Signed-off-by: David S. Miller <davem@davemloft.net>

2010-12-14 13:01:14 -08:00

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