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    net: add network priority cgroup infrastructure (v4) · 5bc1421e
    Neil Horman 提交于
    This patch adds in the infrastructure code to create the network priority
    cgroup.  The cgroup, in addition to the standard processes file creates two
    control files:
    
    1) prioidx - This is a read-only file that exports the index of this cgroup.
    This is a value that is both arbitrary and unique to a cgroup in this subsystem,
    and is used to index the per-device priority map
    
    2) priomap - This is a writeable file.  On read it reports a table of 2-tuples
    <name:priority> where name is the name of a network interface and priority is
    indicates the priority assigned to frames egresessing on the named interface and
    originating from a pid in this cgroup
    
    This cgroup allows for skb priority to be set prior to a root qdisc getting
    selected. This is benenficial for DCB enabled systems, in that it allows for any
    application to use dcb configured priorities so without application modification
    Signed-off-by: NNeil Horman <nhorman@tuxdriver.com>
    Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com>
    CC: Robert Love <robert.w.love@intel.com>
    CC: "David S. Miller" <davem@davemloft.net>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    5bc1421e
sock.c 65.4 KB