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Large receive offload for virtual machines

  • US 9,384,033 B2
  • Filed: 03/11/2014
  • Issued: 07/05/2016
  • Est. Priority Date: 03/11/2014
  • Status: Active Grant
First Claim
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1. A method for operating a host machine in a virtualized network environment, the host machine hosting a plurality of virtual machines, the method comprising:

  • specifying a set of rules for determining whether or not to aggregate packets at a plurality of incoming packet buffers, each rule in the set of rules controlling a packet aggregation operation in a corresponding incoming packet buffer of the plurality of incoming packet buffers, wherein a first rule specifies not aggregating packets for a first set of packets at a first incoming packet buffer and a second rule specifies aggregating packets for a second set of packets at a second incoming packet buffer, wherein packet header contents distinguish the first set of packets from the second set of packets;

    forwarding a non-aggregated packet from the first incoming packet buffer to a first virtual machine of the plurality of virtual machines, wherein the first virtual machine forwards the non-aggregated packet; and

    forwarding an aggregated packet from the second incoming packet buffer to a second virtual machine of the plurality of virtual machines, wherein the second virtual machine terminates the aggregated packet.

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