Multi-domain connection establishment in computer networking communications

Patent metadata

Field	Value
Publication number	US-10033516-B2
Application number	US-201615364476-A
Country	US
Kind code	B2
Filing date	Nov 30, 2016
Priority date	Nov 30, 2016
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A method, computer program product and computer system achieves full-mesh connectivity between any two domains in a multi-domain computing environment such as an Infiniband or Converged Ethernet environment. A connection between two domains is established using a single connection management identifier, and private payloads in connection management datagrams, to drive full-duplex connectivity over a pair of half-duplex connections. The half-duplex connections are established using one connection request, and one connection ID object. A connection management object interfaces between the two connected domains. The connection management object handles communications across the half-duplex connections while the connected applications operate as if they are communicating over a full-duplex connection.

First claim

What is claimed is:

1. A method for establishing a connection between two computer nodes, comprising:
receiving a request to establish a full-duplex connection between a local node and a remote node;
establishing two half-duplex connections between the local node and the remote node;
managing the two half-duplex connections as a full-duplex connection; and
driving full duplex connectivity using a single connection management identifier.

2. The method of claim 1 , further comprising:
sending, by an initiator node, a connection management datagram, from the initiator node to a target node, where the connection management datagram includes a private payload.

3. The method of claim 2 , wherein the private payload includes at least one of: (i) an application service identifier; (ii) a connection domain number; (iii) a number of domains in the target node; (iv) a connection sequence number; (v) a send queue-pair number; (vi) a receive queue-pair number, and (vii) a remote direct memory access (RDMA) segment that includes target node domains information.

4. The method of claim 1 , further comprising:
selecting, by machine logic rules, an initiator role or a target role for a local domain;
wherein the selecting is based on at least one of the following: (i) local domain internet protocol (IP) address; (ii) remote domain IP address; (iii) local domain media access control (MAC) address; (iv) remote domain MAC address; (v) local application type; (vi) remote application type; (vii) local domain number; (viii) remote domain number; (ix) local Infiniband address; and (x) remote Infiniband address.

5. The method of claim 1 , wherein managing the two half-duplex connections comprises using a single connection management identifier.

6. The method of claim 1 , wherein managing the two half-duplex connections comprises instantiating a single connection management object.

7. A computer program product for establishing a connection between two computer nodes, comprising:
one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising instructions to:
receive a request to establish a full-duplex connection between a local node and a remote node;
establish two half-duplex connections between the local node and the remote node;
manage the two half-duplex connections as a full-duplex connection; and
drive full duplex connectivity using a single connection management identifier.

8. The computer program product of claim 7 , further comprising instructions to:
send, by an initiator node, a connection management datagram, from the initiator node to a target node, where the connection management datagram includes a private payload.

9. The computer program product of claim 8 , wherein the private payload includes at least one of: (i) an application service identifier; (ii) a connection domain number; (iii) a number of domains in the target node; (iv) a connection sequence number; (v) a send queue-pair number; (vi) a receive queue-pair number; and (vii) a remote direct memory access (RDMA) segment that includes target node domains information.

10. The computer program product of claim 7 , further comprising instructions to:
select, by machine logic rules, an initiator role or a target role for a local domain;
wherein the selecting is based on at least one of the following: (i) local domain internet protocol (IP) address; (ii) remote domain IP address; (iii) local domain media access control (MAC) address; (iv) remote domain MAC address; (v) local application type; (vi) remote application type; (vii) local domain number; (viii) remote domain number; (ix) local Infiniband address; and (x) remote Infiniband address.

11. The computer program product of claim 7 , wherein managing the two half-duplex connections comprises using a single connection management identifier.

12. The computer program product of claim 7 , wherein managing the two half-duplex connections comprises instantiating a single connection management object.

13. A computer system for establishing a connection between two computer nodes, comprising:
one or more computer processors;
one or more computer-readable storage media;

program instructions stored on the computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising instructions to:
receive a request to establish a full-duplex connection between a local node and a remote node;
establish two half-duplex connections between the local node and the remote node;
manage the two half-duplex connections as a full-duplex connection; and
drive full duplex connectivity using a single connection management identifier.

14. The computer system of claim 13 , further comprising instructions to:
send, by an initiator node, a connection management datagram, from the initiator node to a target node, where the connection management datagram includes a private payload.

15. The computer system of claim 14 , wherein the private payload includes at least one of: (i) an application service identifier; (ii) a connection domain number; (iii) a number of domains in the target node; (iv) a connection sequence number; (v) a send queue-pair number; (vi) a receive queue-pair number; and (vii) a remote direct memory access (RDMA) segment that includes target node domains information.

16. The computer system of claim 13 , further comprising instructions to:
select, by machine logic rules, an initiator role or a target role for a local domain;
wherein the selecting is based on at least one of the following: (i) local domain internet protocol (IP) address; (ii) remote domain IP address; (iii) local domain media access control (MAC) address; (iv) remote domain MAC address; (v) local application type; (vi) remote application type; (vii) local domain number; (viii) remote domain number; (ix) local Infiniband address; and (x) remote Infiniband address.

17. The computer system of claim 13 , wherein managing the two half-duplex connections comprises using a single connection management identifier.

Assignees

• IBM

Inventors

• Chen Lior
• Gavrilov Constantine
• SNAST Alexander
• Zigler Ari

Classifications

• H04L5/16 Primary

  Half-duplex systems; Simplex/duplex switching; Transmission of break signals {non-automatically inverting the direction of transmission} · CPC title

• H04L67/141 Primary

  Setup of application sessions (admission control or resource allocation in data switching networks H04L47/70) · CPC title