System and method for local flow control in a communications device

摘要

This specification is directed to systems and methods including a communications device for relaying data packets to at least one receiving node, having a host processor for receiving data packets and a target interface for transmitting the packets over a communications medium, wherein the target interface is configured to extract address and traffic class information from a packet and return the packet to the host processor when it is determined a node is unavailable and wherein the host processor is configured buffer the packet in a queue corresponding to the address information and the traffic class information.

主权项

1. A communications device for relaying data packets to at least one receiving node, comprising:
a host processor for receiving data packets to be transmitted; and a target interface for transmitting the data packets over a communications medium, wherein the target interface is configured to extract address information and traffic class information from a packet and return the packet to the host processor when it is determined a node designated by the address information is unavailable for transmission of a packet assigned to a traffic class designated by the traffic class information; wherein the host processor is configured to buffer the returned packet in a queue corresponding to the address information and the traffic class information; and wherein the target interface is further configured to monitor node availability and to transmit a packet after determining a node designated by the address information of the packet is available for transmission of a packet assigned to a traffic class designated by the traffic class information of the packet if the packet has a reinjection identifier and to return the packet to the host processor if the packet does not have a reinjection identifier.