Method of communicating data from a host to a network controller

Details Method of communicating data from a host to a network controller Method of communicating data from a host to a network controller

1997-11-12

1999-04-06

Rinehart, Mark H.

39520043, 3952005, 39520066, 39520075, 3952008, G06F 900, G06F 1338

Patent

active

058929258

ABSTRACT:
The basic invention is to define the TBD data structure in the driver layer to be exactly the same as the pointer structure in the TCB fragment structure and to have the TBD pointer in the TxCB point to the TCB fragment structure which is in protocol space. Also, the driver must specify at initialization that physical addresses be loaded into the TCB fragment pointers. This structure then allows the elimination of the TBDs in driver space. They are replaced by the TCB fragment structure. The advantages are that many cpu instructions formerly needed to set up the TBD's and to manage them in memory are eliminated. Also, it is faster to send the fragment structure to the controller than to send the TBDs. This is because the fragment structure is a contiguous array and can therefore go to the controller in burst mode.

REFERENCES:
patent: 5265239 (1993-11-01), Ardolino
patent: 5278834 (1994-01-01), Mazzola
patent: 5355453 (1994-10-01), Row
patent: 5557748 (1996-09-01), Norris
patent: 5729681 (1998-03-01), Aditya et al.
A Refine Cut-Through Buffer Management Scheme for layered Protocol Sta'cks by Yuh-Ming Huang et al.; IEEE Comm., Mar. 1994 pp.82-85.

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