sch_sfq: rehash queues in perturb timer
A known Out Of Order (OOO) problem hurts SFQ when timer changes perturbation value, since all new packets delivered to SFQ enqueue might end on different slots than previous in-flight packets. With round robin delivery, we can thus deliver packets in a different order. Since SFQ is limited to small amount of in-flight packets, we can rehash packets so that this OOO problem is fixed. This rehashing is performed only if internal flow classifier is in use. We now store in skb->cb[] the "struct flow_keys" so that we dont call skb_flow_dissect() again while rehashing. Signed-off-by:Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
4e68ea26
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