• David Ahern's avatar
    net: Enable kernel side filtering of route dumps · effe6792
    David Ahern authored
    Update parsing of route dump request to enable kernel side filtering.
    Allow filtering results by protocol (e.g., which routing daemon installed
    the route), route type (e.g., unicast), table id and nexthop device. These
    amount to the low hanging fruit, yet a huge improvement, for dumping
    routes.
    
    ip_valid_fib_dump_req is called with RTNL held, so __dev_get_by_index can
    be used to look up the device index without taking a reference. From
    there filter->dev is only used during dump loops with the lock still held.
    
    Set NLM_F_DUMP_FILTERED in the answer_flags so the user knows the results
    have been filtered should no entries be returned.
    Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    effe6792
ip6_fib.c 56.2 KB