Infiniband work and completion queue management via head and tail circular buffers with indirect work queue entries

A method for managing a work request, comprising:

• determining a location if a work queue entry pointer in an InfiniBand work queue;
• reading a work queue entry referenced by the work queue entry pointer, wherein the work queue entry includes at least a list of data segments and an access key;
• and
• transmitting a message corresponding to the list of data segments in the work queue entry using the access Key.

A method for managing a request for work completion information, comprising:

• reading a completion queue entry pointer from an InfiniBand completion queue;
• reading a completion queue entry referenced by the completion queue entry pointer;
• and
• using the completion queue entry to return work completion information.

A computer program product, in a computer readable medium, for managing a work request, comprising:

• instructions for building work queue entry for an InfiniBand work queue, wherein the work queue entry includes at least a list of data segments and an access key;
• instructions for writing the work queue entry in memory;
• and
• instructions for writing, the InfiniBand work queue, a work queue entry pointer that points to the work queue entry.

A computer program product, in a computer readable medium, for managing a work request, comprising:

• instructions for determining a location of a work queue entry pointer in an InfiniBand work queue;
• instructions for reading a work queue entry referenced by the work queue entry pointer, wherein the work queue entry includes at least a list of data segments and an access key;
• and
• instructions for transmitting a message corresponding to the list of data segments in the work queue entry using the access key.

A computer program product, in a computer readable medium, for managing a request for work completion information, comprising:

• instructions for reading completion queue entry pointer from an InfiniBand completion queue;
• instructions for reading completion queue entry referenced by the completion queue entry pointer;
• and
• instructions for using the completion queue entry to return work completion information.