• Eric Dumazet's avatar
    net: fix 64 bit counters on 32 bit arches · 28172739
    Eric Dumazet authored
    There is a small possibility that a reader gets incorrect values on 32
    bit arches. SNMP applications could catch incorrect counters when a
    32bit high part is changed by another stats consumer/provider.
    
    One way to solve this is to add a rtnl_link_stats64 param to all
    ndo_get_stats64() methods, and also add such a parameter to
    dev_get_stats().
    
    Rule is that we are not allowed to use dev->stats64 as a temporary
    storage for 64bit stats, but a caller provided area (usually on stack)
    
    Old drivers (only providing get_stats() method) need no changes.
    Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    28172739
loopback.c 5.82 KB