Methods and systems for efficient data transmission in a data center by reducing transport layer processing

1. A machine implemented method, comprising:

receiving a Transmission Control Protocol (TCP) connection request at a target device for a TCP connection from an initiator device;

accepting the TCP connection request by the target device;

receiving an Internet Small Computer System Interface (iSCSI) login request by the target device from the initiator device indicating a desire to bypass TCP layer processing for the TCP connection;

determining by the target device that network traffic with the initiator device is lossless and for a same traffic class;

sending a login response to the initiator device indicating an agreement to bypass the TCP layer processing;

transmitting frames from the initiator device using an ordering layer that bypasses TCP layer processing at the initiator device;

determining by an ordering layer at the target device that the frames received from the initiator device are in order; and

processing the frames using the ordering layer at the target device bypassing TCP layer processing.

2. The method of claim 1 , wherein the processing the frames includes:

sending the frames to an Internet Small Computer System Interface (iSCSI) layer for additional processing.

3. The method of claim 2 , further comprising:

closing the TCP connection when the frames are not delivered in order as determined by the ordering layer; and

attempting to start a new connection with the initiator device.

4. The method of claim 2 , wherein the frames include a TCP header and the iSCSI layer extracts at least one of the following from the TCP header: a port number, a sequence number, a header length, a reset flag, and a checksum field.

5. The method of claim 1 , wherein the target device accepts the login request when the initiator device is on a same subnet.

6. The method of claim 1 , wherein the TCP connection request includes an optional field for indicating a desire to bypass TCP layer processing.

7. The method of claim 1 , wherein the login response to the initiator indicates to use TCP layer processing when network traffic is not lossless.

8. A non-transitory, machine readable storage medium having stored thereon instructions for performing a method, comprising machine executable code which when executed by at least one machine, causes the machine to:

receive a Transmission Control Protocol (TCP) connection request at a target device for a TCP connection from an initiator device;

accept the TCP connection request by the target device;

receive an Internet Small Computer System Interface (iSCSI) login request by the target device from the initiator device indicating a desire to bypass TCP layer processing for the TCP connection;

determine by the target device that network traffic with the initiator device is lossless and for a same traffic class;

send a login response to the initiator device indicating an agreement to bypass the TCP layer processing;

transmit frames from the initiator device using an ordering layer that bypasses TCP layer processing at the initiator device;

determine by an ordering layer at the target device that the frames received from the initiator device are in order; and

process the frames using the ordering layer at the target device bypassing TCP layer processing.

9. The non-transitory, machine readable storage medium of claim 8 , wherein the code to process the frames includes code to:

send the frames to an Internet Small Computer System Interface (iSCSI) layer for additional processing.

10. The non-transitory, machine readable storage medium of claim 9 , further comprising code to:

close the network connection, when the frames are not received in order as determined by the ordering layer; and

attempt to start a new connection with the initiator device.

11. The non-transitory, machine readable storage medium of claim 9 , wherein the frames include a TCP header and the iSCSI layer extracts at least one of the following from the TCP header: a port number, a sequence number, a header length, a reset flag, and a checksum field.

12. The non-transitory, machine readable storage medium of claim 8 , wherein the target device accepts the connection request when the initiator device is on a same subnet.

13. The non-transitory, machine readable storage medium of claim 8 , wherein the TCP connection request includes an optional field for indicating a desire to bypass TCP layer processing.

14. The non-transitory, machine readable storage medium of claim 8 , wherein the login response to the initiator indicates to use TCP layer processing when network traffic is not lossless.

15. A system, comprising:

a memory containing machine readable medium comprising machine executable code having stored thereon instructions; and

a processor module coupled to the memory, the processor module configured to execute the machine executable code to:

receive a Transmission Control Protocol (TCP) connection request at a target device for a TCP connection from an initiator device;

accept the TCP connection request by the target device;

receive an Internet Small Computer System Interface (iSCSI) login request by the target device from the initiator device indicating a desire to bypass TCP layer processing for the TCP connection;

determine by the target device that network traffic with the initiator device is lossless and for a same traffic class;

send a login response to the initiator device indicating an agreement to bypass the TCP layer processing;

transmit frames from the initiator device using an ordering layer that bypasses TCP layer processing at the initiator device;

determine by an ordering layer at the target device that the frames received from the initiator device are in order; and

process the frames using the ordering layer at the target device bypassing TCP layer processing.

16. The system of claim 15 , wherein the instructions to process the frames include instructions to:

send the frames to an Internet Small Computer System Interface (iSCSI) layer for additional processing.

17. The system of claim 16 , further comprising instructions to:

close the network connection, when the frames are not received in order as determined by the ordering layer; and

attempt to start a new connection with the initiator device.

18. The system of claim 16 , wherein the frames include a TCP header and the iSCSI layer extracts at least one of the following from the TCP header: a port number, a sequence number, a header length, a reset flag, and a checksum field.

19. The system of claim 15 , wherein the target device accepts the connection request when the initiator device is on a same.

20. The system of claim 15 , wherein the TCP connection request includes an optional field for indicating a desire to bypass TCP layer processing.