1
1
openmpi/ompi/mca/btl/tcp/btl_tcp_endpoint.h
George Bosilca 46265db0a9 Update the TCP BTL in order to bring back some of the functionalities lost
during the IPv6 patch. The most important is the multi BTL support. There
was a quite interesting bug. Instead of setting up the multiple connections
over different physical devices, based on the time when these connections
were created most of the time they were all using the same physical network.
Which, of course, was not the intended goal, as we top at the maximum
bandwidth available over one device instead of gathering all available
bandwidth from all devices.

Second, the IPv6 RFC suggest to use sockaddr_storage as a holder for the
IP information, but use a sockaddr* when we pass it to functions. This is
only partially corrected by this patch.

Some other minor cleanups.

This commit was SVN r14544.
2007-04-28 19:13:47 +00:00

91 строка
4.0 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2007 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_BTL_TCP_ENDPOINT_H
#define MCA_BTL_TCP_ENDPOINT_H
#include "opal/class/opal_list.h"
#include "opal/event/event.h"
#include "ompi/mca/pml/pml.h"
#include "ompi/mca/btl/btl.h"
#include "btl_tcp_frag.h"
#include "btl_tcp.h"
#if defined(c_plusplus) || defined(__cplusplus)
extern "C" {
#endif
#define MCA_BTL_TCP_ENDPOINT_CACHE 1
/**
* State of TCP endpoint connection.
*/
typedef enum {
MCA_BTL_TCP_CONNECTING = 0,
MCA_BTL_TCP_CONNECT_ACK,
MCA_BTL_TCP_CLOSED,
MCA_BTL_TCP_FAILED,
MCA_BTL_TCP_CONNECTED,
MCA_BTL_TCP_SHUTDOWN
} mca_btl_tcp_state_t;
/**
* An abstraction that represents a connection to a endpoint process.
* An instance of mca_btl_base_endpoint_t is associated w/ each process
* and BTL pair at startup. However, connections to the endpoint
* are established dynamically on an as-needed basis:
*/
struct mca_btl_base_endpoint_t {
opal_list_item_t super;
struct mca_btl_tcp_module_t* endpoint_btl; /**< BTL instance that created this connection */
struct mca_btl_tcp_proc_t* endpoint_proc; /**< proc structure corresponding to endpoint */
struct mca_btl_tcp_addr_t* endpoint_addr; /**< address of endpoint */
int endpoint_sd; /**< socket connection to endpoint */
#if MCA_BTL_TCP_ENDPOINT_CACHE
char* endpoint_cache; /**< cache for the recv (reduce the number of recv syscall) */
char* endpoint_cache_pos; /**< current position in the cache */
size_t endpoint_cache_length; /**< length of the data in the cache */
#endif /* MCA_BTL_TCP_ENDPOINT_CACHE */
struct mca_btl_tcp_frag_t* endpoint_send_frag; /**< current send frag being processed */
struct mca_btl_tcp_frag_t* endpoint_recv_frag; /**< current recv frag being processed */
mca_btl_tcp_state_t endpoint_state; /**< current state of the connection */
size_t endpoint_retries; /**< number of connection retries attempted */
opal_list_t endpoint_frags; /**< list of pending frags to send */
opal_mutex_t endpoint_send_lock; /**< lock for concurrent access to endpoint state */
opal_mutex_t endpoint_recv_lock; /**< lock for concurrent access to endpoint state */
opal_event_t endpoint_send_event; /**< event for async processing of send frags */
opal_event_t endpoint_recv_event; /**< event for async processing of recv frags */
bool endpoint_nbo; /**< convert headers to network byte order? */
};
typedef struct mca_btl_base_endpoint_t mca_btl_base_endpoint_t;
typedef mca_btl_base_endpoint_t mca_btl_tcp_endpoint_t;
OBJ_CLASS_DECLARATION(mca_btl_tcp_endpoint_t);
void mca_btl_tcp_set_socket_options(int sd);
void mca_btl_tcp_endpoint_close(mca_btl_base_endpoint_t*);
int mca_btl_tcp_endpoint_send(mca_btl_base_endpoint_t*, struct mca_btl_tcp_frag_t*);
bool mca_btl_tcp_endpoint_accept(mca_btl_base_endpoint_t*, struct sockaddr*, int);
void mca_btl_tcp_endpoint_shutdown(mca_btl_base_endpoint_t*);
#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif