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    [NET]: Clone the sk_buff 'iif' field in __skb_clone() · 02f1c89d
    Paul Moore 提交于
    Both NetLabel and SELinux (other LSMs may grow to use it as well) rely
    on the 'iif' field to determine the receiving network interface of
    inbound packets.  Unfortunately, at present this field is not
    preserved across a skb clone operation which can lead to garbage
    values if the cloned skb is sent back through the network stack.  This
    patch corrects this problem by properly copying the 'iif' field in
    __skb_clone() and removing the 'iif' field assignment from
    skb_act_clone() since it is no longer needed.
    
    Also, while we are here, put the assignments in the same order as the
    offsets to reduce cacheline bounces.
    Signed-off-by: NPaul Moore <paul.moore@hp.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    02f1c89d
skbuff.c 55.0 KB