METHOD AND APPARATUS TO MANAGE PER FLOW STATE
First Claim
1. Instructions, disposed on a medium, the instructions to cause a device, when in operation, to:
- access a first Transmission Control Protocol (TCP) segment, the first TCP segment having a first segment header, the first segment header comprising at least one of;
(1) a single field value specifying a processor core on a remote system, or (2) a single field value specifying the location in memory of a remote system of flow context data associated with the first segment; and
cause transmission of a second TCP segment, the second TCP segment having a second segment header, the second segment header comprising at least one of;
(1) the single field value specifying a processor core on a remote system, or (2) the single field value specifying the location in memory of a remote system of flow context data associated with the first segment.
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Accused Products
Abstract
A method and apparatus to reduce memory required in a network interface controller to store per flow state information associated with a network connection is provided. Instead of storing per flow state information for a connection in the network interface controller at an endpoint of the connection, the per flow state information for the connection is stored in memory external to the network interface controller. The stored state information is conveyed in a packet by the network interface controller between the endpoints of the connection. For a Transmission Control Protocol (TCP) connection, the state information is conveyed between the endpoints of the TCP connection in a TCP option included in the TCP header in the packet.
11 Citations
10 Claims
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1. Instructions, disposed on a medium, the instructions to cause a device, when in operation, to:
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access a first Transmission Control Protocol (TCP) segment, the first TCP segment having a first segment header, the first segment header comprising at least one of;
(1) a single field value specifying a processor core on a remote system, or (2) a single field value specifying the location in memory of a remote system of flow context data associated with the first segment; andcause transmission of a second TCP segment, the second TCP segment having a second segment header, the second segment header comprising at least one of;
(1) the single field value specifying a processor core on a remote system, or (2) the single field value specifying the location in memory of a remote system of flow context data associated with the first segment. - View Dependent Claims (2, 3, 4, 5)
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6. A system, comprising logic to:
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access a first Transmission Control Protocol (TCP) segment, the first TCP segment having a first segment header, the first segment header comprising at least one of (1) a single field value specifying a processor core on a remote system, or (2) a single field value specifying the location in memory of a remote system of flow context data associated with the first segment; and cause transmission of a second. TCP segment, the second TCP segment having a second segment header, the second segment header comprising at least one of;
(1) the single field value specifying a processor core on a remote system, or (2) the single field value specifying the location in memory of a remote system of flow context data associated with the first segment. - View Dependent Claims (7, 8, 9, 10)
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Specification