公开(公告)号：AU2002302830A1

公开(公告)日：2003-01-21

申请号：AU2002302830

申请日：2002-06-18

Applicant: IBM

Inventor： DAVIS GORDON TAYLOR ,  JEFFRIES CLARK DEBS ,  CALVIGNAC JEAN LOUIS ,  DAMON PHILIPPE ,  BASSO CLAUDE ,  HEDDES MARCO

IPC: G06F17/30

Abstract: A method and system for performing a pattern match search for a data string having a plurality of characters separated by delimiters. In accordance with the method of the present invention a search key is constructed by generating a full match search increment comprising the binary representation of a data string element, wherein the data string element comprises all characters between a pair of delimiters. The search key is completed by concatenating a pattern search prefix to the full match search increment, wherein the pattern search prefix is a cumulative pattern search result of each previous full match search increment. A full match search is then performed within a lookup table utilizing the search key. In response to finding a matching pattern within the lookup table, the process returns to constructing a next search key. In response to not finding a matching pattern, the previous full match search result is utilized to process the data string.

公开(公告)号：AU2002225237A1

公开(公告)日：2002-11-05

申请号：AU2002225237

申请日：2002-01-28

Applicant: IBM

Inventor： VERPLANKEN FABRICE JEAN ,  HEDDES MARCO ,  BASSO CLAUDE ,  LOGAN JOSEPH FRANKLIN ,  CALVIGNAC JEAN LOUIS

IPC: H04L12/18 ,  H04L12/56

Abstract: Data structures, a method, and an associated transmission system for multicast transmission on network processors in order both to minimize multicast transmission memory requirements and to account for port performance discrepancies. Frame data for multicast transmission on a network processor is read into buffers to which are associated various control structures and a reference frame. The reference frame and the associated control structures permit multicast targets to be serviced without creating multiple copies of the frame. Furthermore this same reference frame and control structures allow buffers allocated for each multicast target to be returned to the free buffer queue without waiting until all multicast transmissions are complete.

公开(公告)号：BR0015717A

公开(公告)日：2002-07-23

申请号：BR0015717

申请日：2000-12-21

Applicant: IBM

Inventor： BASS BRIAN MITCHELL ,  CALVIGNAC JEAN LOUIS ,  DAVIS GORDON TAYLOR ,  GALLO ANTHONY MATTEO ,  HEDDES MARCO ,  JENKINSS STEVEN KENNETH ,  LEAVENS ROSS BODY ,  SIEGEL MICHAEL STEVEN ,  VERPLANKEN FABRICE JEAN

IPC: H04L12/28 ,  H04L12/46 ,  H04L12/56 ,  H04L45/60 ,  G06F9/46 ,  H04L29/06

Abstract: A system and method of frame protocol classification and processing in a system for data processing (e.g., switching or routing data packets or frames). The present invention includes analyzing a portion of the frame according to predetermined tests, then storing key characteristics of the packet for use in subsequent processing of the frame. The key characteristics for the frame (or input information unit) include the type of layer 3 protocol used in the frame, the layer 2 encapsulation technique, the starting instruction address, flags indicating whether the frame uses a virtual local area network, and the identity of the data flow to which the frame belongs. Much of the analysis is preferably done using hardware so that it can be completed quickly and in a uniform time period. The stored characteristics of the frame are then used by the network processing complex in its processing of the frame. The processor is preconditioned with a starting instruction address and the location of the beginning of the layer 3 header as well as flags for the type of frame. That is, the instruction address or code entry point is used by the processor to start processing for a frame at the right place, based on the type of frame. Additional instruction addresses can be stacked and used sequentially at branches to avoid additional tests and branching instructions. Additionally, frames comprising a data flow can be processed and forwarded in the same order in which they are received.

公开(公告)号：CA2403193A1

公开(公告)日：2001-10-25

申请号：CA2403193

申请日：2001-03-26

Applicant: IBM

Inventor： BASS BRIAN MITCHELL ,  VERPLANKEN FABRICE JEAN ,  SIEGEL MICHAEL STEVEN ,  HEDDES MARCO ,  CALVIGNAC JEAN LOUIS

IPC: H04L12/54 ,  H04Q11/04 ,  H04L12/56

Abstract: A system and method of moving information units from a network processor toward a data transmission network in a prioritized sequence which accommodates several different levels of service. The present invention includes a method and system for scheduling the egress of processed information units (or frames) from a network processing unit according to stored priorities associated with the various sources of the information units. The priorities in the preferred embodiment include a low latency service, a minimum bandwidth, a weighted fair queueing and a system for preventing a user from continuing to exceed his service levels over an extended period. The present invention includes a plurality of calendars wit h different service rates to allow a user to select the service rate which he desires. If a customer has chosen a high bandwidth for service, the customer will be included in a calendar which is serviced more often than if the customer has chosen a lower bandwidth.

公开(公告)号：CA2400727A1

公开(公告)日：2001-10-18

申请号：CA2400727

申请日：2001-04-10

Applicant: IBM

Inventor： ROVER SONIA KIANG ,  RAO SRIDHAR ,  HARIHARAN SEETA ,  GALLO ANTHONY MATTEO ,  HEDDES MARCO ,  BASSO CLAUDE

IPC: G06F13/10 ,  H04L12/24 ,  H04L12/56 ,  H04L29/06

Abstract: A system and method for controlling overall behavior of a network processor device implemented in a network processing environment servicing a communications network. The method includes steps of receiving a guided control frame including one or more control functions for configuring variou s functional devices within the network processor with device control paramete r data; a step of forwarding one or more control functions from a received control frame to a functional device within the network processor to be configured; and, executing the control functions as specified in the control frame. A novel control frame data structure and communications infrastructur e is implemented whereby any network processor device operating in a distribut ed network processing environment may be controlled in accordance with executed control functions and device control parameter data.