• Vlad Buslov's avatar
    net: sched: extend Qdisc with rcu · 3a7d0d07
    Vlad Buslov authored
    Currently, Qdisc API functions assume that users have rtnl lock taken. To
    implement rtnl unlocked classifiers update interface, Qdisc API must be
    extended with functions that do not require rtnl lock.
    Extend Qdisc structure with rcu. Implement special version of put function
    qdisc_put_unlocked() that is called without rtnl lock taken. This function
    only takes rtnl lock if Qdisc reference counter reached zero and is
    intended to be used as optimization.
    Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
    Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
pkt_sched.h 4.31 KB