• David S. Miller's avatar
    net: Abstract away all dst_entry metrics accesses. · defb3519
    David S. Miller authored
    Use helper functions to hide all direct accesses, especially writes,
    to dst_entry metrics values.
    This will allow us to:
    1) More easily change how the metrics are stored.
    2) Implement COW for metrics.
    In particular this will help us put metrics into the inetpeer
    cache if that is what we end up doing.  We can make the _metrics
    member a pointer instead of an array, initially have it point
    at the read-only metrics in the FIB, and then on the first set
    grab an inetpeer entry and point the _metrics member there.
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    Acked-by: default avatarEric Dumazet <eric.dumazet@gmail.com>