259 строки
9.1 KiB
C
259 строки
9.1 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) 2004-2005 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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* $COPYRIGHT$
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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_IB_ENDPOINT_H
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#define MCA_BTL_IB_ENDPOINT_H
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#include "opal/class/opal_list.h"
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#include "opal/event/event.h"
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#include "mca/pml/pml.h"
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#include "mca/btl/btl.h"
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#include "btl_openib_frag.h"
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#include "btl_openib.h"
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#include <errno.h>
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#include <string.h>
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#include "mca/btl/base/btl_base_error.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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OBJ_CLASS_DECLARATION(mca_btl_openib_endpoint_t);
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struct mca_btl_openib_frag_t;
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struct mca_btl_openib_port_info_t {
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uint16_t subnet;
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};
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typedef struct mca_btl_openib_port_info_t mca_btl_openib_port_info_t;
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/**
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* State of IB endpoint connection.
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*/
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typedef enum {
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/* Defines the state in which this BTL instance
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* has started the process of connection */
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MCA_BTL_IB_CONNECTING,
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/* Waiting for ack from endpoint */
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MCA_BTL_IB_CONNECT_ACK,
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/*Waiting for final connection ACK from endpoint */
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MCA_BTL_IB_WAITING_ACK,
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/* Connected ... both sender & receiver have
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* buffers associated with this connection */
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MCA_BTL_IB_CONNECTED,
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/* Connection is closed, there are no resources
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* associated with this */
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MCA_BTL_IB_CLOSED,
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/* Maximum number of retries have been used.
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* Report failure on send to upper layer */
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MCA_BTL_IB_FAILED
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} mca_btl_openib_endpoint_state_t;
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struct mca_btl_openib_rem_info_t {
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uint32_t rem_qp_num_hp;
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uint32_t rem_qp_num_lp;
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/* Remote QP number (Low and High priority) */
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uint16_t rem_lid;
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/* Local identifier of the remote process */
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uint32_t rem_psn_hp;
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uint32_t rem_psn_lp;
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/* Remote processes port sequence number (Low and High) */
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uint16_t rem_subnet;
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/* subnet of remote process */
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};
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typedef struct mca_btl_openib_rem_info_t mca_btl_openib_rem_info_t;
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/**
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* An abstraction that represents a connection to a endpoint process.
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* An instance of mca_btl_base_endpoint_t is associated w/ each process
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* and BTL pair at startup. However, connections to the endpoint
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* are established dynamically on an as-needed basis:
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*/
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struct mca_btl_base_endpoint_t {
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opal_list_item_t super;
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struct mca_btl_openib_module_t* endpoint_btl;
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/**< BTL instance that created this connection */
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struct mca_btl_openib_proc_t* endpoint_proc;
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/**< proc structure corresponding to endpoint */
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mca_btl_openib_endpoint_state_t endpoint_state;
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/**< current state of the connection */
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size_t endpoint_retries;
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/**< number of connection retries attempted */
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double endpoint_tstamp;
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/**< timestamp of when the first connection was attempted */
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opal_mutex_t endpoint_lock;
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/**< lock for concurrent access to endpoint state */
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opal_list_t pending_send_frags;
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/**< list of pending send frags for this endpotint */
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opal_list_t pending_frags_hp;
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/**< list of pending high priority frags */
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opal_list_t pending_frags_lp;
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/**< list of pending low priority frags */
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mca_btl_openib_rem_info_t rem_info;
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uint32_t lcl_psn_hp;
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uint32_t lcl_psn_lp;
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/* Local processes port sequence number (Low and High) */
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struct ibv_qp* lcl_qp_hp;
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struct ibv_qp* lcl_qp_lp;
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/* Local QP (Low and High) */
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struct ibv_qp_attr* lcl_qp_attr_hp;
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struct ibv_qp_attr* lcl_qp_attr_lp;
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/* Local QP attributes (Low and High) */
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int32_t sd_tokens_hp; /**< number of high priority send tokens */
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int32_t sd_tokens_lp; /**< number of low priority send tokens */
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int32_t get_tokens; /**< number of available get tokens */
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int32_t rd_posted_hp; /**< number of high priority descriptors posted to the nic*/
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int32_t rd_posted_lp; /**< number of low priority descriptors posted to the nic*/
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int32_t rd_credits_hp; /**< number of high priority credits to return to peer */
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int32_t rd_credits_lp; /**< number of low priority credits to return to peer */
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int32_t sd_credits_hp; /**< number of send wqe entries being used to return credits */
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int32_t sd_credits_lp; /**< number of send wqe entries being used to return credits */
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int32_t sd_wqe_hp; /**< number of available send wqe entries */
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int32_t sd_wqe_lp; /**< number of available send wqe entries */
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uint16_t subnet; /**< subnet of this endpoint*/
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};
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typedef struct mca_btl_base_endpoint_t mca_btl_base_endpoint_t;
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typedef mca_btl_base_endpoint_t mca_btl_openib_endpoint_t;
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int mca_btl_openib_endpoint_send(mca_btl_base_endpoint_t* endpoint, struct mca_btl_openib_frag_t* frag);
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int mca_btl_openib_endpoint_connect(mca_btl_base_endpoint_t*);
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void mca_btl_openib_post_recv(void);
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void mca_btl_openib_endpoint_send_credits_hp(mca_btl_base_endpoint_t*);
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void mca_btl_openib_endpoint_send_credits_lp(mca_btl_base_endpoint_t*);
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#define MCA_BTL_OPENIB_ENDPOINT_POST_RR_HIGH(endpoint, \
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additional) \
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{ \
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do { \
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mca_btl_openib_module_t * openib_btl = endpoint->endpoint_btl; \
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OPAL_THREAD_LOCK(&openib_btl->ib_lock); \
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if(endpoint->rd_posted_hp <= mca_btl_openib_component.rd_low+additional && \
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endpoint->rd_posted_hp < openib_btl->rd_num) { \
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MCA_BTL_OPENIB_ENDPOINT_POST_RR_SUB(openib_btl->rd_num - \
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endpoint->rd_posted_hp, \
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endpoint, \
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&openib_btl->recv_free_eager, \
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endpoint->rd_posted_hp, \
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endpoint->rd_credits_hp, \
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endpoint->lcl_qp_hp); \
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} \
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OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); \
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} while(0); \
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}
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#define MCA_BTL_OPENIB_ENDPOINT_POST_RR_LOW(endpoint, \
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additional) { \
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do { \
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mca_btl_openib_module_t * openib_btl = endpoint->endpoint_btl; \
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OPAL_THREAD_LOCK(&openib_btl->ib_lock); \
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if(endpoint->rd_posted_lp <= mca_btl_openib_component.rd_low+additional && \
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endpoint->rd_posted_lp < openib_btl->rd_num){ \
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MCA_BTL_OPENIB_ENDPOINT_POST_RR_SUB(openib_btl->rd_num - \
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endpoint->rd_posted_lp, \
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endpoint, \
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&openib_btl->recv_free_max, \
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endpoint->rd_posted_lp, \
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endpoint->rd_credits_lp, \
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endpoint->lcl_qp_lp \
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); } \
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OPAL_THREAD_UNLOCK(&openib_btl->ib_lock); \
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} while(0); \
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}
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#define MCA_BTL_OPENIB_ENDPOINT_POST_RR_SUB(cnt, \
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my_endpoint, \
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frag_list, \
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rd_posted, \
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rd_credits, \
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qp ) \
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do { \
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int32_t i; \
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int rc; \
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int32_t num_post = cnt; \
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struct ibv_recv_wr* bad_wr; \
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for(i = 0; i < num_post; i++) { \
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opal_list_item_t* item; \
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mca_btl_openib_frag_t* frag; \
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OMPI_FREE_LIST_WAIT(frag_list, item, rc); \
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frag = (mca_btl_openib_frag_t*) item; \
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frag->endpoint = my_endpoint; \
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frag->sg_entry.length = frag->size + \
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((unsigned char*) frag->segment.seg_addr.pval- \
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(unsigned char*) frag->hdr); \
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if(ibv_post_recv(qp, \
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&frag->wr_desc.rd_desc, \
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&bad_wr)) { \
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BTL_ERROR(("error posting receive errno says %s\n", strerror(errno))); \
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return OMPI_ERROR; \
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}\
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}\
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OPAL_THREAD_ADD32(&(rd_posted), num_post); \
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OPAL_THREAD_ADD32(&(rd_credits), num_post); \
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} while(0);
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#define BTL_OPENIB_INSERT_PENDING(frag, frag_list, tokens, lock) \
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do{ \
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OPAL_THREAD_LOCK(&lock); \
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opal_list_append(&frag_list, (opal_list_item_t *)frag); \
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OPAL_THREAD_UNLOCK(&lock); \
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OPAL_THREAD_ADD32(&tokens, 1); \
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} while(0);
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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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