149 строки
4.5 KiB
C
149 строки
4.5 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2006 Sandia National Laboratories. All rights
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* reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef MCA_BTL_UD_FRAG_H
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#define MCA_BTL_UD_FRAG_H
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#define MCA_BTL_IB_FRAG_ALIGN (8)
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#include <infiniband/verbs.h>
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#include "ompi/mca/mpool/rdma/mpool_rdma.h"
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#include "btl_ofud.h"
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* Fragment types
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*/
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typedef enum {
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MCA_BTL_UD_FRAG_SEND,
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MCA_BTL_UD_FRAG_USER,
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MCA_BTL_UD_FRAG_RECV
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} mca_btl_ud_frag_type_t;
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struct mca_btl_ud_reg_t {
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mca_mpool_base_registration_t base;
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struct ibv_mr* mr;
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};
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typedef struct mca_btl_ud_reg_t mca_btl_ud_reg_t;
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/* UD adds a 40 byte global routing header */
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/* This works in strange ways - the sending side does not need to explicitly
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include this data in sg lists. Then, on the receiving side, the extra 40
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bytes magically appear. */
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struct mca_btl_ud_ib_header_t {
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uint8_t ib_grh[40];
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};
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typedef struct mca_btl_ud_ib_header_t mca_btl_ud_ib_header_t;
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struct mca_btl_ud_header_t {
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/*uint32_t src_qpnum;*/
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mca_btl_base_tag_t tag;
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};
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typedef struct mca_btl_ud_header_t mca_btl_ud_header_t;
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/**
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* IB send fragment derived type.
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*/
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struct mca_btl_ud_frag_t {
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mca_btl_base_descriptor_t base;
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mca_btl_base_segment_t segment;
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struct mca_btl_base_endpoint_t* endpoint;
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mca_btl_ud_frag_type_t type;
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union{
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struct ibv_recv_wr rd_desc;
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struct ibv_send_wr sr_desc;
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} wr_desc;
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struct ibv_sge sg_entry;
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/* When this is a send frag, hdr points right after this, as expected.
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But when this is a receive frag, we have an extra 40 bytes provided
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by IB, so this points 40 bytes past the end of the frag. */
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mca_btl_ud_header_t* hdr;
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mca_btl_ud_reg_t* ud_reg;
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};
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typedef struct mca_btl_ud_frag_t mca_btl_ud_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_ud_frag_t);
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typedef struct mca_btl_ud_frag_t mca_btl_ud_send_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_ud_send_frag_t);
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typedef struct mca_btl_ud_frag_t mca_btl_ud_user_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_ud_user_frag_t);
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typedef struct mca_btl_ud_frag_t mca_btl_ud_recv_frag_t;
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OBJ_CLASS_DECLARATION(mca_btl_ud_recv_frag_t);
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/*
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* Allocate/return a UD/IB send/user fragment
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*/
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#define MCA_BTL_UD_ALLOC_FRAG(btl, frag, rc) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_GET(&((mca_btl_ud_module_t*)btl)->send_frags, item, rc); \
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frag = (mca_btl_ud_frag_t*) item; \
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}
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#define MCA_BTL_UD_RETURN_FRAG(btl, frag) \
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{ \
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OMPI_FREE_LIST_RETURN( \
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&((mca_btl_ud_module_t*)btl)->send_frags, \
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(ompi_free_list_item_t*)(frag)); \
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}
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#define MCA_BTL_UD_ALLOC_USER_FRAG(btl, frag, rc) \
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{ \
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ompi_free_list_item_t *item; \
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OMPI_FREE_LIST_GET(&((mca_btl_ud_module_t*)btl)->user_frags, item, rc); \
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frag = (mca_btl_ud_frag_t*) item; \
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}
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#define MCA_BTL_UD_RETURN_USER_FRAG(btl, frag) \
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{ \
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OMPI_FREE_LIST_RETURN( \
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&((mca_btl_ud_module_t*)btl)->user_frags, \
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(ompi_free_list_item_t*)(frag)); \
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}
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struct mca_btl_ud_module_t;
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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