US 10,769,098 B2 · Methods and systems for accessing host memory through non-volatile memory over fabric bridging with direct target access

Abstract

Embodiments described herein provide a method for accessing a host memory through non-volatile memory over fabric bridging with direct target access. A first memory access command encapsulated in a first network packet is received at a memory interface unit and from a remote direct memory access (RDMA) interface and via a network fabric. The first memory access command is compliant with a first non-volatile memory interface protocol and the first network packet is compliant with a second non-volatile memory interface protocol. The first network packet is unwrapped to obtain the first memory access command. The first memory access command is stored in a work queue using address bits of the work queue as a pre-set index of the first memory access command. The first memory access command is sent from the work queue based on the pre-set index to activate a first target storage device.

Claims20

Dependent claims

A method for accessing a host memory through non-volatile memory over fabric bridging with direct target access, the method comprising:

receiving, at a memory interface unit, from a remote direct memory access (RDMA) interface and via a network fabric, a first memory access command compliant with a first non-volatile memory interface protocol that was encapsulated at the RDMA interface, without modifying the first memory access command, in a first network packet
compliant with a second non-volatile memory interface protocol different from the first non-volatile memory interface protocol;
unwrapping, by the memory interface unit, the first network packet to obtain the encapsulated first memory access command compliant with the first non-volatile memory interface protocol;
storing the first memory access command, as obtained from the first network packet, in a work queue using address bits of the work queue as a pre-determined index of the first memory access command;
and
sending the first memory access command, as obtained from the first network packet, from the work queue based on the pre-set index to a first target storage device.

3 more elements

A system for accessing a host memory through non-volatile memory over fabric bridging with direct target access, the system comprising:

a memory interface unit configured to:
receive, from a remote direct memory access (RDMA) interface and via a network fabric, a first memory access command that was encapsulated at the RDMA interface, without modifying the first memory access command, in a first network packet
compliant with a second non-volatile memory interface protocol different from the first non-volatile memory interface protocol;
and
unwrap the first network packet to obtain the encapsulated first memory access command compliant with the first non-volatile memory interface protocol;
and
a memory unit configured to:
store the first memory access command, as obtained from the first network packet, in a work queue using address bits of the work queue as a pre-determined index of the first memory access command;
and
send the first memory access command, as obtained from the first network packet, from the work queue based on the predetermined index to activate a first target storage device.

7 more elements

Dependencies are inferred from the claim text.

Methods and systems for accessing host memory through non-volatile memory over fabric bridging with direct target access

Life of this patent

Methods and systems for accessing host memory through non-volatile memory over fabric bridging with direct target access

Life of this patent

Abstract

Claims20