tree d1b35b1be5ab73df6f7e57b86a2e68fad2990adf
parent 9fe146aef44afe5ec677d8150b6ae94e09b773f7
author David S. Miller <davem@davemloft.net> 1292360474 -0800
committer David S. Miller <davem@davemloft.net> 1292360474 -0800

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>