src/include/gpxe/ib_srp.h

   1 #ifndef _GPXE_IB_SRP_H
   2 #define _GPXE_IB_SRP_H
   3
   4 /** @file
   5  *
   6  * SCSI RDMA Protocol over Infiniband
   7  *
   8  */
   9
  10 FILE_LICENCE ( BSD2 );
  11
  12 #include <stdint.h>
  13 #include <gpxe/infiniband.h>
  14 #include <gpxe/srp.h>
  15
  16 /** SRP initiator port identifier for Infiniband */
  17 struct ib_srp_initiator_port_id {
  18         /** Identifier extension */
  19         struct ib_gid_half id_ext;
  20         /** IB channel adapter GUID */
  21         struct ib_gid_half hca_guid;
  22 } __attribute__ (( packed ));
  23
  24 /** SRP target port identifier for Infiniband */
  25 struct ib_srp_target_port_id {
  26         /** Identifier extension */
  27         struct ib_gid_half id_ext;
  28         /** I/O controller GUID */
  29         struct ib_gid_half ioc_guid;
  30 } __attribute__ (( packed ));
  31
  32 /**
  33  * Get Infiniband-specific initiator port ID
  34  *
  35  * @v port_ids          SRP port IDs
  36  * @ret initiator_port_id  Infiniband-specific initiator port ID
  37  */
  38 static inline __always_inline struct ib_srp_initiator_port_id *
  39 ib_srp_initiator_port_id ( struct srp_port_ids *port_ids ) {
  40         return ( ( struct ib_srp_initiator_port_id * ) &port_ids->initiator );
  41 }
  42
  43 /**
  44  * Get Infiniband-specific target port ID
  45  *
  46  * @v port_ids          SRP port IDs
  47  * @ret target_port_id  Infiniband-specific target port ID
  48  */
  49 static inline __always_inline struct ib_srp_target_port_id *
  50 ib_srp_target_port_id ( struct srp_port_ids *port_ids ) {
  51         return ( ( struct ib_srp_target_port_id * ) &port_ids->target );
  52 }
  53
  54 /** Infiniband-specific SRP parameters */
  55 struct ib_srp_parameters {
  56         /** Source GID */
  57         struct ib_gid sgid;
  58         /** Destination GID */
  59         struct ib_gid dgid;
  60         /** Service ID */
  61         struct ib_gid_half service_id;
  62         /** Partition key */
  63         uint16_t pkey;
  64 };
  65
  66 /**
  67  * Get Infiniband-specific transport parameters
  68  *
  69  * @v srp               SRP device
  70  * @ret ib_params       Infiniband-specific transport parameters
  71  */
  72 static inline __always_inline struct ib_srp_parameters *
  73 ib_srp_params ( struct srp_device *srp ) {
  74         return srp_transport_priv ( srp );
  75 }
  76
  77 extern struct srp_transport_type ib_srp_transport;
  78
  79 #endif /* _GPXE_IB_SRP_H */