• Vlad Buslov's avatar
    net: sched: ingress: set 'unlocked' flag for clsact Qdisc ops · 87f37392
    Vlad Buslov authored
    To remove rtnl lock dependency in tc filter update API when using clsact
    Qdisc, set QDISC_CLASS_OPS_DOIT_UNLOCKED flag in clsact Qdisc_class_ops.
    
    Clsact Qdisc ops don't require any modifications to be used without rtnl
    lock on tc filter update path. Implementation never changes its q->block
    and only releases it when Qdisc is being destroyed. This means it is enough
    for RTM_{NEWTFILTER|DELTFILTER|GETTFILTER} message handlers to hold clsact
    Qdisc reference while using it without relying on rtnl lock protection.
    Unlocked Qdisc ops support is already implemented in filter update path by
    unlocked cls API patch set.
    Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    87f37392
sch_ingress.c 7.3 KB