US 2024/0205172 A1 · PACKET FORWARDING IN AN INFORMATION HANDLING SYSTEM WITH LOOPBACK CONFIGURATION

Abstract

Presented herein are systems and methods for packet processing in an information handling system that uses loopback processing. In one or more embodiments, buffer accounting is done with respect to the original ingress port for packets when using loopback processing. Such embodiments have several benefits, including but not limited to, mitigating or eliminating head-of-line (HoL) blocking of traffic and headroom (plus additional buffers which may need to be allocated for use before priority-based flow control is generated) provisioning for the loopback port. Embodiments may include additional features, such as handling anomalies (e.g., corruption) and reclaiming reserved buffers if corruption or delays occur.

Claims20

Dependent claims

A computer-implemented method comprising:

for a packet that is identified to be sent to a loopback port of the information handling system:
reserving one or more buffer units of memory of an information handling system that are associated with storing data related to the packet;
associating metadata with the packet that indicates:
an original ingress port from where the packet was originally received at the information handling system;
and
an identifier of a first buffer unit of the one or more buffer units where the packet is stored in memory of the information handling system;
and
sending data related to the packet via the loopback port to effectuate loopback handling of the packet at the information handling system.

5 more elements

An information handling system comprising:

one or more processors;
a set of ports in which at least one of the ports is configured as a loopback port;
and
a non-transitory computer-readable medium or media comprising one or more sets of instructions which, when executed by at least one of the one or more processors, causes steps to be performed comprising:
for a packet that is identified to be sent to a loopback port of the information handling system:
reserving one or more buffer units of memory of an information handling system that are associated with storing data related to the packet;
associating metadata with the packet that indicates:
an original ingress port from where the packet was originally received at the information handling system;
and
an identifier of a first buffer unit of the one or more buffer units where the packet is stored in memory of the information handling system;
and
sending data related to the packet via the loopback port to effectuate loopback handling of the packet at the information handling system.

9 more elements

A non-transitory digital information handling component or components of an information handling system configured to perform steps comprising:

for a packet that is identified to be sent to a loopback port of the information handling system:
reserving one or more buffer units of memory of an information handling system that are associated with storing data related to the packet;
associating metadata with the packet that indicates:
an original ingress port from where the packet was originally received at the information handling system;
and
an identifier of a first buffer unit of the one or more buffer units where the packet is stored in memory of the information handling system;
and
sending data related to the packet via a loopback port to effectuate loopback handling of the packet at the information handling system.

5 more elements

Dependencies are inferred from the claim text.

Packet forwarding in an information handling system with loopback configuration

Life of this patent

Packet forwarding in an information handling system with loopback configuration

Life of this patent

Abstract

Claims20