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Network processor which defines virtual paths without using logical path descriptors

  • US 7,069,557 B2
  • Filed: 05/23/2002
  • Issued: 06/27/2006
  • Est. Priority Date: 05/23/2002
  • Status: Expired due to Fees
First Claim
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1. A method of operating a network processor, the method comprising:

  • (a) maintaining a schedule indicative of respective times at which a plurality of virtual channels are to be serviced;

    (b) reading an entry from the schedule, the entry corresponding to a current transmit cycle and including a pointer to a channel descriptor for a virtual channel to be serviced in the current transmit cycle;

    (c) transmitting a data cell for the virtual channel to be serviced in the current transmit cycle;

    (d) adding to the schedule an entry which points to a channel descriptor that is pointed to by the channel descriptor for the virtual channel serviced in the current transmit cycle; and

    (e) writing to the channel descriptor pointed to by the channel descriptor for the virtual channel serviced in the current transmit cycle a time stamp indicative of a scheduled time for servicing a virtual channel which corresponds to the channel descriptor pointed to by the channel descriptor for the virtual channel serviced in the current transmit cycle.

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