Host computer and network interface using a two-dimensional per-

Details Host computer and network interface using a two-dimensional per- Host computer and network interface using a two-dimensional per-

1995-04-14

1997-10-28

Kim, Kenneth S.

Multiplex communications

Wide area network

Packet switching

370473, 395250, 39549701, 39549702, G06F 1202

Patent

active

056825536

ABSTRACT:
A network interface using per-application free buffer lists includes a pat processor which processes an incoming message and stores packet data into free buffers designated for the application for which the message intended. The packet processor has memory storing an internal free buffer list. The internal free buffer list is loaded from an external free buffer list memory, which contains a free buffer list for each application. Each time a message arrives for a given application, the packet processor retrieves a portion of the external free buffer list for the application and loads the portion into the internal free buffer list. The portion which is loaded is a number of free buffers which is thought to be sufficient to handle an anticipated size of the incoming message. As a packet is processed, data are deposited in the buffers specified in the internal list. Any internal buffers unused after the packet is processed are attached to the end of the list of filled buffers returned, providing a self-cleaning property that allows an application to exert some control over which buffer an incoming packet uses. If packet data remains after the internal free buffer list is used up, the packet processor retrieves another portion of the external free buffer list and continues processing the message. To facilitate reading only a portion of the external free buffer list, the list may be organized as a two-dimensional structure, such as a linked list of free buffer lists.

REFERENCES:
patent: 5367643 (1994-11-01), Chang et al.
patent: 5426639 (1995-06-01), Follett et al.
patent: 5432908 (1995-07-01), Heddes et al.
patent: 5434976 (1995-07-01), Tan et al.

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