ib_cm.h

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#ifndef _GPXE_IB_CM_H
#define _GPXE_IB_CM_H

/** @file
 *
 * Infiniband communication management
 *
 */

FILE_LICENCE ( GPL2_OR_LATER );

#include <gpxe/infiniband.h>
#include <gpxe/retry.h>

struct ib_mad_transaction;
struct ib_connection;

/** Infiniband connection operations */
struct ib_connection_operations {
        /** Handle change of connection status
         *
         * @v ibdev             Infiniband device
         * @v qp                Queue pair
         * @v conn              Connection
         * @v rc                Connection status code
         * @v private_data      Private data, if available
         * @v private_data_len  Length of private data
         */
        void ( * changed ) ( struct ib_device *ibdev, struct ib_queue_pair *qp,
                             struct ib_connection *conn, int rc,
                             void *private_data, size_t private_data_len );
};

/** An Infiniband connection */
struct ib_connection {
        /** Infiniband device */
        struct ib_device *ibdev;
        /** Queue pair */
        struct ib_queue_pair *qp;
        /** Local communication ID */
        uint32_t local_id;
        /** Remote communication ID */
        uint32_t remote_id;
        /** Target service ID */
        struct ib_gid_half service_id;
        /** Connection operations */
        struct ib_connection_operations *op;

        /** List of connections */
        struct list_head list;

        /** Path to target */
        struct ib_path *path;
        /** Connection request management transaction */
        struct ib_mad_transaction *madx;

        /** Length of connection request private data */
        size_t private_data_len;
        /** Connection request private data */
        uint8_t private_data[0];
};

extern struct ib_connection *
ib_create_conn ( struct ib_device *ibdev, struct ib_queue_pair *qp,
                 struct ib_gid *dgid, struct ib_gid_half *service_id,
                 void *req_private_data, size_t req_private_data_len,
                 struct ib_connection_operations *op );
extern void ib_destroy_conn ( struct ib_device *ibdev,
                              struct ib_queue_pair *qp,
                              struct ib_connection *conn );

#endif /* _GPXE_IB_CM_H */