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    Subject[RFC][PATCH v6 13/19] To skip GRO if buffer is external currently.
    Date
    From: Xin Xiaohui <xiaohui.xin@intel.com>

    Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com>
    Signed-off-by: Zhao Yu <yzhao81new@gmail.com>
    Reviewed-by: Jeff Dike <jdike@linux.intel.com>
    ---
    net/core/dev.c | 4 ++++
    1 files changed, 4 insertions(+), 0 deletions(-)

    diff --git a/net/core/dev.c b/net/core/dev.c
    index dc2f225..6c6b2fe 100644
    --- a/net/core/dev.c
    +++ b/net/core/dev.c
    @@ -2787,6 +2787,10 @@ enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
    if (skb_is_gso(skb) || skb_has_frags(skb))
    goto normal;

    + /* currently GRO is not supported by mediate passthru */
    + if (dev_is_mpassthru(skb->dev))
    + goto normal;
    +
    rcu_read_lock();
    list_for_each_entry_rcu(ptype, head, list) {
    if (ptype->type != type || ptype->dev || !ptype->gro_receive)
    --
    1.5.4.4


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