Starting to introduce an Infiniband device abstraction

1 files changed, 63 insertions, 0 deletions

diff --git a/src/include/gpxe/infiniband.h b/src/include/gpxe/infiniband.h
index 9f126b49d..22a8a9824 100644
--- a/src/include/gpxe/infiniband.h
+++ b/src/include/gpxe/infiniband.h
@@ -61,6 +61,69 @@ struct ibhdr {
 	uint16_t reserved;
 } __attribute__ (( packed ));
 
+/** An Infiniband Work Queue */
+struct ib_work_queue {
+	/** Number of work queue entries */
+	unsigned int num_wqes;
+	/** Posted index
+	 *
+	 * This is the index of the most recently posted entry.
+	 */
+	unsigned int posted;
+	/** Driver-private data
+	 *
+	 * Typically used to hold the address of the work queue.
+	 */
+	void *priv;
+	/** I/O buffers assigned to work queue */
+	struct io_buffer *iobuf[0];
+};
+
+/** An Infiniband Queue Pair */
+struct ib_queue_pair {
+	/** Queue Pair Number */
+	uint32_t qpn;
+	/** Send queue */
+	struct ib_work_queue send;
+	/** Receive queue */
+	struct ib_work_queue recv;
+};
+
+/** An Infiniband Address Vector */
+struct ib_address_vector {
+	
+};
+
+/**
+ * Infiniband device operations
+ *
+ * These represent a subset of the Infiniband Verbs.
+ */
+struct ib_device_operations {
+	/** Post Send work queue entry
+	 *
+	 * @v ibdev		Infiniband device
+	 * @v iobuf		I/O buffer
+	 * @v av		Address vector
+	 * @v qp		Queue pair
+	 * @ret rc		Return status code
+	 *
+	 * If this method returns success, the I/O buffer remains
+	 * owned by the queue pair.  If this method returns failure,
+	 * the I/O buffer is immediately released; the failure is
+	 * interpreted as "failure to enqueue buffer".
+	 */
+	int ( * post_send ) ( struct ib_device *ibdev,
+			      struct io_buffer *iobuf,
+			      struct ib_address_vector *av,
+			      struct ib_queue_pair *qp );
+};
+
+
+
+
+
+
 extern struct ll_protocol infiniband_protocol;
 
 extern const char * ib_ntoa ( const void *ll_addr );