Cell fabric hardware acceleration

Patent metadata

Field	Value
Publication number	US-9294569-B2
Application number	US-201414501156-A
Country	US
Kind code	B2
Filing date	Sep 30, 2014
Priority date	Mar 15, 2013
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

An aspect includes a method for providing direct communication between a server and a network switch in a cell-based fabric. A host channel adapter of a cell fabric hardware accelerator is configured to provide the server with direct access to memory within the network switch. A plurality of data packets having a fixed size is received at the host channel adapter from the server. The host channel adapter is coupled to a bus of the server. A direct transmission is performed from the cell fabric hardware accelerator to the memory within the network switch on an interconnect bus to write the data packets directly into the memory.

First claim

What is claimed:

1. A method for providing direct communication between a server and a network switch in a cell-based fabric, the method comprising:
configuring a host channel adapter of a cell fabric hardware accelerator to provide the server with direct access to memory within the network switch;
receiving a plurality of data packets having a fixed size at the host channel adapter from the server, the host channel adapter coupled to a bus of the server; and
performing a direct transmission from the cell fabric hardware accelerator to the memory within the network switch on an interconnect bus to write the data packets directly into the memory via a memory access port of the network switch using a remote direct memory access (RDMA) operation, the memory access port providing line buffering and format adjustment between the interconnect bus and the memory, and the memory access port is independent of network ports of the network switch that send packets to a plurality of other network switches using variable packet sizes.

2. The method of claim 1 , further comprising:
configuring the memory within the network switch as a cache memory of the server.

3. The method of claim 1 , wherein configuring the host channel adapter of the cell fabric hardware accelerator to provide direct access to memory within the network switch further comprises registering the memory to inform the server that the memory is accessible using remote direct memory access operations.

4. The method of claim 1 , further comprising:
interfacing adaption logic between the host channel adapter and memory interface logic, the memory interface logic comprising a link layer chip and a physical interface coupled to the interconnect bus.

5. The method of claim 4 , further comprising:
tracking events associated with the link layer chip using an event queue control of the host channel adapter.

6. The method of claim 1 , further comprising:
scheduling work operations at the host channel adapter for the memory within the network switch using a queue pair in the host channel adapter based on work requests from the server.

7. The method of claim 6 , further comprising:
providing the server with one or more transaction completion notifications for the scheduled work operations at the host channel adapter using a completion queue control.

8. The method of claim 1 , wherein the network switch is part of an Ethernet network comprising the other network switches.

9. A computer program product for providing direct communication between a server and a network switch in a cell-based fabric, the computer program product comprising:
a non-transitory storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
configuring a host channel adapter of a cell fabric hardware accelerator to provide the server with direct access to memory within the network switch;
receiving a plurality of data packets having a fixed size at the host channel adapter from the server, the host channel adapter coupled to a bus of the server; and
performing a direct transmission from the cell fabric hardware accelerator to the memory within the network switch on an interconnect bus to write the data packets directly into the memory via a memory access port of the network switch using a remote direct memory access (RDMA) operation, the memory access port providing line buffering and format adjustment between the interconnect bus and the memory, and the memory access port is independent of network ports of the network switch that send packets to a plurality of other network switches using variable packet sizes.

10. The computer program product of claim 9 , further comprising:
configuring the memory within the network switch as a cache memory of the server.

11. The computer program product of claim 9 , wherein configuring the host channel adapter of the cell fabric hardware accelerator to provide direct access to memory within the network switch further comprises registering the memory to inform the server that the memory is accessible using remote direct memory access operations.

12. The computer program product of claim 9 , further comprising tracking events associated with a link layer chip using an event queue control of the host channel adapter.

13. The computer program product of claim 9 , further comprising:
scheduling work operations at the host channel adapter for the memory within the network switch using a queue pair in the host channel adapter based on work requests from the server.

14. The computer program product of claim 13 , further comprising:
providing the server with one or more transaction completion notifications for the scheduled work operations at the host channel adapter using a completion queue control.

Assignees

• IBM

Inventors

• Decusatis Casimer
• Krishnamurthy Rajaram B

Classifications

• H04L12/5601

  Transfer mode dependent, e.g. ATM · CPC title

• H04L49/252

  Store and forward routing · CPC title

• H04L67/1097 Primary

  for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS] · CPC title

• H04L12/2602

  Electricity · mapped topic

• H04L49/356

  for storage area networks · CPC title