Multi-domain connection establishment in computer networking communications

Patent metadata

Field	Value
Publication number	US-10057045-B2
Application number	US-201715819362-A
Country	US
Kind code	B2
Filing date	Nov 21, 2017
Priority date	Nov 30, 2016
Publication date	Aug 21, 2018
Grant date	Aug 21, 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:
assigning, by machine logic rules based on an algorithm, an initiator role to a local node, and a target role to a remote node;
receiving, via a side channel and from the remote node, a request to establish a full-duplex connection between the local node and the remote node;
in response to receiving the request:
creating a connection management identifier,
establishing two half-duplex connections between the local node and the remote node;
managing the two half-duplex connections based on the connection management identifier;
instantiating a single connection management object where the single connection management object is a low-level application programming interface;
sending, by the local node, and to the remote node, a connection management datagram, where the connection management datagram includes a private payload;
sending, by the local node, and to the remote node, a first remote direct memory access (RDMA) descriptor,
receiving, by the local node, and from the remote node, a second RDMA descriptor, and
managing the two half-duplex connections as a full-duplex connection;

wherein:
the algorithm 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, and
the private payload includes at least one of the following: (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.

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