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    Subject[RFC][PATCH v4 05/18] Add a function to indicate if device use external buffer.
    Date
    From: Xin Xiaohui <xiaohui.xin@intel.com>

    Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com>
    Signed-off-by: Zhao Yu <yzhao81@gmail.com>
    Reviewed-by: Jeff Dike <jdike@linux.intel.com>
    ---
    include/linux/netdevice.h | 7 +++++++
    1 files changed, 7 insertions(+), 0 deletions(-)

    diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
    index 2f9a4f2..a1a2aaf 100644
    --- a/include/linux/netdevice.h
    +++ b/include/linux/netdevice.h
    @@ -1602,6 +1602,13 @@ extern void netdev_mp_port_detach(struct net_device *dev);
    int netdev_mp_port_prep(struct net_device *dev,
    struct mpassthru_port *port);

    +static int dev_is_mpassthru(struct net_device *dev)
    +{
    + if (dev && dev->mp_port)
    + return 1;
    + return 0;
    +}
    +
    static inline void napi_free_frags(struct napi_struct *napi)
    {
    kfree_skb(napi->skb);
    --
    1.5.4.4


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