Packet Data Restoration for Flow-Based Forwarding Element

摘要

Some embodiments provide a method for preserving temporary storage values of a packet processed by a managed forwarding element (MFE. While processing a packet at the MFE, the method identifies that the packet is to be recirculated as a new packet for the MFE. A set of packet field values used for processing the packet by the MFE are associated with the packet. The method stores the set of packet field values with an identifier value. The method recirculates the packet with the identifier value attached to the packet. Upon receiving the recirculated packet, the method uses the identifier value to restore the set of packet field values for the recirculated packet.

主权项

1. A method for preserving temporary storage values of a packet processed by a managed forwarding element (MFE), the method comprising:
while processing a packet at the MFE, identifying that the packet is to be recirculated as a new packet for the MFE, wherein a set of packet field values used for processing the packet by the MFE are associated with the packet; storing the set of packet field values with an identifier value; recirculating the packet with the identifier value attached to the packet; and upon receiving the recirculated packet, using the identifier value to restore the set of packet field values for the recirculated packet.