src/include/gpxe/ib_sma.h

   1 #ifndef _GPXE_IB_SMA_H
   2 #define _GPXE_IB_SMA_H
   3
   4 /** @file
   5  *
   6  * Infiniband Subnet Management Agent
   7  *
   8  */
   9
  10 #include <gpxe/infiniband.h>
  11 #include <gpxe/process.h>
  12
  13 /** Infiniband Subnet Management Agent operations */
  14 struct ib_sma_operations {
  15         /** Set port information
  16          *
  17          * @v ibdev             Infiniband device
  18          * @v port_info         New port information
  19          */
  20         int ( * set_port_info ) ( struct ib_device *ibdev,
  21                                   const struct ib_port_info *port_info );
  22 };
  23
  24 /** An Infiniband Subnet Management Agent */
  25 struct ib_sma {
  26         /** Infiniband device */
  27         struct ib_device *ibdev;
  28         /** SMA operations */
  29         struct ib_sma_operations *op;
  30         /** SMA completion queue */
  31         struct ib_completion_queue *cq;
  32         /** SMA queue pair */
  33         struct ib_queue_pair *qp;
  34         /** Poll process */
  35         struct process poll;
  36 };
  37
  38 /** SMA payload size allocated for received packets */
  39 #define IB_SMA_PAYLOAD_LEN 2048
  40
  41 /** SMA number of send WQEs
  42  *
  43  * This is a policy decision.
  44  */
  45 #define IB_SMA_NUM_SEND_WQES 4
  46
  47 /** SMA number of receive WQEs
  48  *
  49  * This is a policy decision.
  50  */
  51 #define IB_SMA_NUM_RECV_WQES 2
  52
  53 /** SMA number of completion queue entries
  54  *
  55  * This is a policy decision
  56  */
  57 #define IB_SMA_NUM_CQES 8
  58
  59 extern int ib_create_sma ( struct ib_sma *sma, struct ib_device *ibdev,
  60                            struct ib_sma_operations *op );
  61 extern void ib_destroy_sma ( struct ib_sma *sma );
  62
  63 #endif /* _GPXE_IB_SMA_H */