• David S. Miller's avatar
    ipv4: Don't pre-seed hoplimit metric. · 323e126f
    David S. Miller authored
    
    
    Always go through a new ip4_dst_hoplimit() helper, just like ipv6.
    
    This allowed several simplifications:
    
    1) The interim dst_metric_hoplimit() can go as it's no longer
       userd.
    
    2) The sysctl_ip_default_ttl entry no longer needs to use
       ipv4_doint_and_flush, since the sysctl is not cached in
       routing cache metrics any longer.
    
    3) ipv4_doint_and_flush no longer needs to be exported and
       therefore can be marked static.
    
    When ipv4_doint_and_flush_strategy was removed some time ago,
    the external declaration in ip.h was mistakenly left around
    so kill that off too.
    
    We have to move the sysctl_ip_default_ttl declaration into
    ipv4's route cache definition header net/route.h, because
    currently net/ip.h (where the declaration lives now) has
    a back dependency on net/route.h
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    323e126f