ib_srp.h

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#ifndef _GPXE_IB_SRP_H
#define _GPXE_IB_SRP_H

/** @file
 *
 * SCSI RDMA Protocol over Infiniband
 *
 */

FILE_LICENCE ( BSD2 );

#include <stdint.h>
#include <gpxe/infiniband.h>
#include <gpxe/srp.h>

/** SRP initiator port identifier for Infiniband */
struct ib_srp_initiator_port_id {
        /** Identifier extension */
        struct ib_gid_half id_ext;
        /** IB channel adapter GUID */
        struct ib_gid_half hca_guid;
} __attribute__ (( packed ));

/** SRP target port identifier for Infiniband */
struct ib_srp_target_port_id {
        /** Identifier extension */
        struct ib_gid_half id_ext;
        /** I/O controller GUID */
        struct ib_gid_half ioc_guid;
} __attribute__ (( packed ));

/**
 * Get Infiniband-specific initiator port ID
 *
 * @v port_ids          SRP port IDs
 * @ret initiator_port_id  Infiniband-specific initiator port ID
 */
static inline __always_inline struct ib_srp_initiator_port_id *
ib_srp_initiator_port_id ( struct srp_port_ids *port_ids ) {
        return ( ( struct ib_srp_initiator_port_id * ) &port_ids->initiator );
}

/**
 * Get Infiniband-specific target port ID
 *
 * @v port_ids          SRP port IDs
 * @ret target_port_id  Infiniband-specific target port ID
 */
static inline __always_inline struct ib_srp_target_port_id *
ib_srp_target_port_id ( struct srp_port_ids *port_ids ) {
        return ( ( struct ib_srp_target_port_id * ) &port_ids->target );
}

/** Infiniband-specific SRP parameters */
struct ib_srp_parameters {
        /** Source GID */
        struct ib_gid sgid;
        /** Destination GID */
        struct ib_gid dgid;
        /** Service ID */
        struct ib_gid_half service_id;
        /** Partition key */
        uint16_t pkey;
};

/**
 * Get Infiniband-specific transport parameters
 *
 * @v srp               SRP device
 * @ret ib_params       Infiniband-specific transport parameters
 */
static inline __always_inline struct ib_srp_parameters *
ib_srp_params ( struct srp_device *srp ) {
        return srp_transport_priv ( srp );
}

extern struct srp_transport_type ib_srp_transport;

#endif /* _GPXE_IB_SRP_H */