QueuePair.h

Go to the documentation of this file.

/************************************************************
 * The Data Acquisition Backbone Core (DABC)                *
 ************************************************************
 * Copyright (C) 2009 -                                     *
 * GSI Helmholtzzentrum fuer Schwerionenforschung GmbH      *
 * Planckstr. 1, 64291 Darmstadt, Germany                   *
 * Contact:  http://dabc.gsi.de                             *
 ************************************************************
 * This software can be used under the GPL license          *
 * agreements as stated in LICENSE.txt file                 *
 * which is part of the distribution.                       *
 ************************************************************/
 
#ifndef VERBS_QueuePair
#define VERBS_QueuePair
 
#define VERBS_MAX_INLINE  256
#define VERBS_DEFAULT_QKEY 0x01234567
#define VERBS_MCAST_QPN  0xffffff
#define VERBS_UD_MEMADDON  40
 
#define VERBSQP_RC 0
#define VERBSQP_UC 1
#define VERBSQP_UD 2
 
#ifndef VERBS_Context
#include "verbs/Context.h"
#endif
 
namespace verbs {
 
   class Device;
   class ComplQueue;
 
   class QueuePair {
      public:
         QueuePair(ContextRef ctx, ibv_qp_type qp_type,
                   ComplQueue* send_cq, int send_depth, int max_send_sge,
                   ComplQueue* recv_cq, int recv_depth, int max_recv_sge);
         virtual ~QueuePair();
 
         struct ibv_qp *qp() const { return f_qp; }
 
         ibv_qp_type qp_type() const { return fType; }
         bool is_ud() const { return qp_type()==IBV_QPT_UD; }
         uint32_t qp_num() const { return f_qp ? f_qp->qp_num : 0; }
         uint32_t local_psn() const { return f_local_psn; }
 
         unsigned NumSendSegs() const { return fNumSendSegs; }
 
         bool Connect(uint16_t lid, uint32_t qpn, uint32_t psn, uint8_t src_path_bits = 0);
 
         bool InitUD();
 
         uint16_t remote_lid() const { return f_remote_lid; }
         uint32_t remote_qpn() const { return f_remote_qpn; }
         uint32_t remote_psn() const { return f_remote_psn; }
 
         bool Post_Send(struct ibv_send_wr* swr);
         bool Post_Recv(struct ibv_recv_wr* rwr);
 
         bool AttachMcast(ibv_gid* mgid, uint16_t mlid);
         bool DetachMcast(ibv_gid* mgid, uint16_t mlid);
 
      protected:
         static uint32_t fQPCounter;
 
         ContextRef  fContext;
 
         ibv_qp_type fType;
 
         struct ibv_qp *f_qp;
 
         uint32_t f_local_psn;    
 
         uint16_t f_remote_lid;
         uint32_t f_remote_qpn;
         uint32_t f_remote_psn;
 
         unsigned fNumSendSegs;
   };
}
 
#endif