• Thomas Graf's avatar
    pkt_sched: Control group classifier · f4009237
    Thomas Graf authored
    The classifier should cover the most common use case and will work
    without any special configuration.
    The principle of the classifier is to directly access the
    task_struct via get_current(). In order for this to work,
    classification requests from softirqs must be ignored. This is
    not a problem because the vast majority of packets in softirq
    context are not assigned to a task anyway. For this to work, a
    mechanism is needed to trace softirq context. 
    This repost goes back to the method of relying on the number of
    nested bh disable calls for the sake of not adding too much
    complexity and the option to come up with something more reliable
    if actually needed.
    Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
pkt_cls.h 9.05 KB