公开(公告)号：DE60210748T2

公开(公告)日：2007-01-04

申请号：DE60210748

申请日：2002-02-20

Applicant: IBM

Inventor： CALVIGNAC LOUIS ,  HEDDES MARCO ,  LOGAN FRANKLIN ,  VERPLANKEN JEAN

IPC: G06F13/42 ,  H04L45/74

Abstract: A method and system for reducing memory accesses by inserting qualifiers in control blocks. In one embodiment, a system comprises a processor configured to process frames of data. The processor may comprise a plurality of buffers configured to store frames of data where each frame of data may be associated with a frame control block. Each frame control block associated with a frame of data may be associated with one or more buffer control blocks. Each control block, e.g., frame control block, buffer control block, may comprise one or more qualifier fields that comprise information unrelated to the current control block. Instead, qualifiers may comprise information related to an another control block. The last frame control block in a queue as well as the last buffer control block associated with a frame control block may comprise fields with no information thereby reducing memory accesses to access information in those fields.

公开(公告)号：DE60203380D1

公开(公告)日：2005-04-28

申请号：DE60203380

申请日：2002-01-28

Applicant: IBM

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

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：DE60210748D1

公开(公告)日：2006-05-24

申请号：DE60210748

申请日：2002-02-20

Applicant: IBM

Inventor： CALVIGNAC LOUIS ,  HEDDES MARCO ,  LOGAN FRANKLIN ,  VERPLANKEN JEAN

IPC: G06F13/42 ,  H04L45/74

Abstract: A method and system for reducing memory accesses by inserting qualifiers in control blocks. In one embodiment, a system comprises a processor configured to process frames of data. The processor may comprise a plurality of buffers configured to store frames of data where each frame of data may be associated with a frame control block. Each frame control block associated with a frame of data may be associated with one or more buffer control blocks. Each control block, e.g., frame control block, buffer control block, may comprise one or more qualifier fields that comprise information unrelated to the current control block. Instead, qualifiers may comprise information related to an another control block. The last frame control block in a queue as well as the last buffer control block associated with a frame control block may comprise fields with no information thereby reducing memory accesses to access information in those fields.

公开(公告)号：DE60203785D1

公开(公告)日：2005-05-25

申请号：DE60203785

申请日：2002-02-20

Applicant: IBM

Inventor： CALVIGNAC LOUIS ,  HEDDES MARCO C O IBM UNITED KI ,  LOGAN FRANKLIN ,  VERPLANKEN JEAN

IPC: H04L12/861 ,  H04L29/06 ,  H04L12/56

Abstract: A method and system for reducing the number of accesses to memory to obtain the desired field information in frame control blocks. In one embodiment of the present invention, a system comprises a processor configured to process frames of data. The processor may comprise a data flow unit configured to receive and transmit frames of data, where each frame of data may have an associated frame control block. Each frame control block comprises a first and a second control block. The processor may further comprise a first memory coupled to the data flow unit configured to store field information for the first control block. The processor may further comprise a scheduler coupled to the data flow unit where the scheduler is configured to schedule frames of data received by data flow unit. The scheduler may comprise a second memory configured to store field information for the second control block.

公开(公告)号：DE60203785T2

公开(公告)日：2006-03-09

申请号：DE60203785

申请日：2002-02-20

Applicant: IBM

Inventor： CALVIGNAC LOUIS ,  HEDDES MARCO C O IBM UNITED KI ,  LOGAN FRANKLIN ,  VERPLANKEN JEAN

IPC: H04L12/861 ,  H04L29/06

Abstract: A method and system for reducing the number of accesses to memory to obtain the desired field information in frame control blocks. In one embodiment of the present invention, a system comprises a processor configured to process frames of data. The processor may comprise a data flow unit configured to receive and transmit frames of data, where each frame of data may have an associated frame control block. Each frame control block comprises a first and a second control block. The processor may further comprise a first memory coupled to the data flow unit configured to store field information for the first control block. The processor may further comprise a scheduler coupled to the data flow unit where the scheduler is configured to schedule frames of data received by data flow unit. The scheduler may comprise a second memory configured to store field information for the second control block.

公开(公告)号：DE60203380T2

公开(公告)日：2006-02-02

申请号：DE60203380

申请日：2002-01-28

Applicant: IBM

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

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.