Communication via a connection management message that uses an attribute having information on queue pair objects of a proxy node in a switchless network

Patent metadata

Field	Value
Publication number	US-10193758-B2
Application number	US-201615131834-A
Country	US
Kind code	B2
Filing date	Apr 18, 2016
Priority date	Apr 18, 2016
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A connection management message that uses a proxy attribute is received, wherein the connection management message includes information on a first proxy queue pair and a second proxy queue pair, wherein the first proxy queue pair provides communication between a proxy node and an initiator node in a switchless network, and wherein the second proxy queue pair provides communication between the proxy node and a target node in the switchless network. The connection management message that uses the proxy attribute, channels datagrams received from the initiator node to the target node in the switchless network.

First claim

What is claimed is:

1. A method, comprising:
receiving a connection management message that uses a proxy attribute, wherein the connection management message includes information on a first proxy queue pair and a second proxy queue pair, wherein the first proxy queue pair provides communication between a proxy node and an initiator node in a switchless network, and wherein the second proxy queue pair provides communication between the proxy node and a target node in the switchless network; and
channeling, via the connection management message that uses the proxy attribute, datagrams received from the initiator node to the target node in the switchless network.

2. The method of claim 1 , wherein host channel adapters of the initiator node, the proxy node, and the target node do not have routing capabilities for routing datagrams.

3. The method of claim 1 , wherein the connection management message comprises a special management datagram (MAD) class in an InfiniBand standard, and the proxy attribute comprises a ProxyMADcommand in the InfiniBand standard.

4. The method of claim 1 , the method further comprising:
generating the first proxy queue pair and the second proxy queue pair, in response to determining that a hop count for a received datagram does not equal a hop length for the datagram.

5. The method of claim 1 , the method further comprising:
generating a normal queue pair in response to determining that a hop count for a received datagram equals a hop length for the datagram.

6. The method of claim 5 , wherein Remote Direct memory Access (RDMA) writes are performed by the first and the second proxy queue pairs by determining free reserved addresses from a next proxy node and then performing RDMA writes to the next proxy node.

7. The method of claim 1 , wherein the datagrams are associated with connection management in an InfiniBand network.

8. A system comprising a proxy node in a switchless network, the system comprising:
a memory; and
a processor coupled to the memory, wherein the processor performs operations, the operations comprising:
receiving a connection management message that uses a proxy attribute, wherein the connection management message includes information on a first proxy queue pair and a second proxy queue pair, wherein the first proxy queue pair provides communication between the proxy node and an initiator node in the switchless network, and wherein the second proxy queue pair provides communication between the proxy node and a target node in the switchless network; and
channeling, via the connection management message that uses the proxy attribute, datagrams received from the initiator node to the target node in the switchless network.

9. The system of claim 8 , wherein host channel adapters of the initiator node, the proxy node, and the target node do not have routing capabilities for routing datagrams.

10. The system of claim 8 , wherein the connection management message comprises a special management datagram (MAD) class in an InfiniBand standard, and the proxy attribute comprises a ProxyMADcommand in the InfiniBand standard.

11. The system of claim 8 , the operations further comprising:
generating the first proxy queue pair and the second proxy queue pair, in response to determining that a hop count for a received datagram does not equal a hop length for the datagram.

12. The system of claim 8 , the operations further comprising:
generating a normal queue pair in response to determining that a hop count for a received datagram equals a hop length for the datagram.

13. The system of claim 12 , wherein Remote Direct memory Access (RDMA) writes are performed by the first and the second proxy queue pairs by determining free reserved addresses from a next proxy node and then performing RDMA writes to the next proxy node.

14. The system of claim 8 , wherein the datagrams are associated with connection management in an InfiniBand network.

15. A computer program product, the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code configured to perform operations, the operations comprising:
receiving a connection management message that uses a proxy attribute, wherein the connection management message includes information on a first proxy queue pair and a second proxy queue pair, wherein the first proxy queue pair provides communication between a proxy node and an initiator node in a switchless network, and wherein the second proxy queue pair provides communication between the proxy node and a target node in the switchless network; and
channeling, via the connection management message that uses the proxy attribute, datagrams received from the initiator node to the target node in the switchless network.

16. The computer program product of claim 15 , wherein host channel adapters of the initiator node, the proxy node, and the target node do not have routing capabilities for routing datagrams.

17. The computer program product of claim 15 , wherein the connection management message comprises a special management datagram (MAD) class in an InfiniBand standard, and the proxy attribute comprises a ProxyMADcommand in the InfiniBand standard.

18. The computer program product of claim 15 , the operations further comprising:
generating the first proxy queue pair and the second proxy queue pair, in response to determining that a hop count for a received datagram does not equal a hop length for the datagram.

19. The computer program product of claim 15 , the operations further comprising:
generating a normal queue pair in response to determining that a hop count for a received datagram equals a hop length for the datagram.

20. The computer program product of claim 19 , wherein Remote Direct memory Access (RDMA) writes are performed by the first and the second proxy queue pairs by determining free reserved addresses from a next proxy node and then performing RDMA writes to the next proxy node.

Assignees

• IBM

Inventors

• Chen Lior
• Etelson Gregory
• Gavrilov Constantine

Classifications

• H04L41/12 Primary

  Discovery or management of network topologies · 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

• H04L45/00

  Routing or path finding of packets in data switching networks (routing or path finding in wireless networks H04W40/00) · CPC title

• H04L67/56

  Provisioning of proxy services (store-and-forward switching systems in data switching networks H04L12/54) · CPC title

• H04L67/2876

  Pairs of inter-processing entities at each side of the network, e.g. split proxies · CPC title