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openmpi/ompi/mca/btl/sctp/btl_sctp_component.c

953 строки
33 KiB
C
Исходник Обычный вид История

initial SCTP BTL commit This commit was SVN r16723.
2007-11-14 02:39:16 +03:00
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 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
*
* $HEADER$
*
* In windows, many of the socket functions return an EWOULDBLOCK
* instead of \ things like EAGAIN, EINPROGRESS, etc. It has been
* verified that this will \ not conflict with other error codes that
* are returned by these functions \ under UNIX/Linux environments
*/
#include "ompi_config.h"
#include "opal/opal_socket_errno.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <fcntl.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include "ompi/constants.h"
#include "opal/event/event.h"
#include "opal/util/if.h"
#include "opal/util/argv.h"
#include "opal/util/output.h"
#include "orte/mca/oob/base/base.h"
#include "orte/mca/ns/ns_types.h"
#include "ompi/mca/pml/pml.h"
#include "ompi/mca/btl/btl.h"
#include "opal/mca/base/mca_base_param.h"
#include "ompi/runtime/ompi_module_exchange.h"
#include "orte/mca/errmgr/errmgr.h"
#include "ompi/mca/mpool/base/base.h"
#include "ompi/mca/btl/base/btl_base_error.h"
#include "btl_sctp.h"
#include "btl_sctp_addr.h"
#include "btl_sctp_proc.h"
#include "btl_sctp_frag.h"
#include "btl_sctp_endpoint.h"
#include "ompi/mca/btl/base/base.h"
#include "ompi/datatype/convertor.h"
#include <netinet/sctp.h>
#include "btl_sctp_recv_handler.h"
#include "btl_sctp_component.h"
mca_btl_sctp_component_t mca_btl_sctp_component = {
{
/* First, the mca_base_component_t struct containing meta information
about the component itself */
{
/* Indicate that we are a pml v1.0.0 component (which also implies a
specific MCA version) */
MCA_BTL_BASE_VERSION_1_0_1,
"sctp", /* MCA component name */
OMPI_MAJOR_VERSION, /* MCA component major version */
OMPI_MINOR_VERSION, /* MCA component minor version */
OMPI_RELEASE_VERSION, /* MCA component release version */
mca_btl_sctp_component_open, /* component open */
mca_btl_sctp_component_close /* component close */
},
/* Next the MCA v1.0.0 component meta data */
{
/* Whether the component is checkpointable or not */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
mca_btl_sctp_component_init,
NULL,
}
};
/*
* utility routines for parameter registration
*/
static inline char* mca_btl_sctp_param_register_string(
const char* param_name,
const char* default_value)
{
char *param_value;
char *help_string = NULL;
mca_base_param_reg_string(&mca_btl_sctp_component.super.btl_version,
param_name, help_string, false, false,
default_value, &param_value);
return param_value;
}
static inline int mca_btl_sctp_param_register_int(
const char* param_name,
int default_value)
{
int param_value;
char *help_string = NULL;
mca_base_param_reg_int(&mca_btl_sctp_component.super.btl_version,
param_name, help_string, false, false,
default_value, &param_value);
return param_value;
}
/*
* Data structure for accepting connections.
*/
struct mca_btl_sctp_event_t {
opal_list_item_t item;
opal_event_t event;
};
typedef struct mca_btl_sctp_event_t mca_btl_sctp_event_t;
static void mca_btl_sctp_event_construct(mca_btl_sctp_event_t* event)
{
OPAL_THREAD_LOCK(&mca_btl_sctp_component.sctp_lock);
opal_list_append(&mca_btl_sctp_component.sctp_events, &event->item);
OPAL_THREAD_UNLOCK(&mca_btl_sctp_component.sctp_lock);
}
static void mca_btl_sctp_event_destruct(mca_btl_sctp_event_t* event)
{
OPAL_THREAD_LOCK(&mca_btl_sctp_component.sctp_lock);
opal_list_remove_item(&mca_btl_sctp_component.sctp_events, &event->item);
OPAL_THREAD_UNLOCK(&mca_btl_sctp_component.sctp_lock);
}
OBJ_CLASS_INSTANCE(
mca_btl_sctp_event_t,
opal_list_item_t,
mca_btl_sctp_event_construct,
mca_btl_sctp_event_destruct);
/*
* functions for receiving event callbacks
*/
static void mca_btl_sctp_component_recv_handler(int, short, void*); /* for 1-1 */
/* mca_btl_sctp_recv_handler(int, short, void*) for 1-many is in btl_sctp_recv_handler.h */
/*
* Called by MCA framework to open the component, registers
* component parameters.
*/
int mca_btl_sctp_component_open(void)
{
#ifdef __WINDOWS__
WSADATA win_sock_data;
if (WSAStartup(MAKEWORD(2,2), &win_sock_data) != 0) {
BTL_ERROR(("failed to initialise windows sockets:%d", WSAGetLastError()));
return OMPI_ERROR;
}
#endif
/* initialize state */
mca_btl_sctp_component.sctp_listen_sd = -1;
/* TODO different sd for ipv6 */
mca_btl_sctp_component.sctp_num_btls=0;
/* addr_count */
mca_btl_sctp_component.sctp_btls=NULL;
/* initialize objects */
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_lock, opal_mutex_t);
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_procs, opal_hash_table_t);
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_events, opal_list_t);
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_frag_eager, ompi_free_list_t);
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_frag_max, ompi_free_list_t);
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_frag_user, ompi_free_list_t);
opal_hash_table_init(&mca_btl_sctp_component.sctp_procs, 256);
#if MCA_BTL_SCTP_DONT_USE_HASH
/* TODO make this only allocate how much it needs to. Currently
* allocates 256 (to match sctp_procs). recvr_proc_table and
* sender_proc_table are malloc'd in mca_btl_sctp_component_init.
*/
recvr_proc_table = NULL;
sender_proc_table = NULL;
#else
OBJ_CONSTRUCT(&mca_btl_sctp_component.sctp_assocID_hash, opal_hash_table_t);
opal_hash_table_init(&mca_btl_sctp_component.sctp_assocID_hash, 256);
#endif
/* register SCTP component parameters */
/* num links */
mca_btl_sctp_component.sctp_if_include =
mca_btl_sctp_param_register_string("if_include", "");
mca_btl_sctp_component.sctp_if_exclude =
mca_btl_sctp_param_register_string("if_exclude", "lo");
mca_btl_sctp_component.sctp_free_list_num =
mca_btl_sctp_param_register_int ("free_list_num", 8);
mca_btl_sctp_component.sctp_free_list_max =
mca_btl_sctp_param_register_int ("free_list_max", -1);
mca_btl_sctp_component.sctp_free_list_inc =
mca_btl_sctp_param_register_int ("free_list_inc", 32);
mca_btl_sctp_component.sctp_sndbuf =
mca_btl_sctp_param_register_int ("sndbuf", 128*1024);
mca_btl_sctp_component.sctp_rcvbuf =
mca_btl_sctp_param_register_int ("rcvbuf", 128*1024);
mca_btl_sctp_component.sctp_endpoint_cache =
mca_btl_sctp_param_register_int ("endpoint_cache", 30*1024);
mca_btl_sctp_component.sctp_use_nodelay =
!mca_btl_sctp_param_register_int ("use_nagle", 0);
/* port_min */
/* port_range */
/* use a single one-to-many socket by default */
mca_btl_sctp_component.sctp_if_11 =
mca_btl_sctp_param_register_int ("if_11", 0);
/* have lower exclusivity than tcp */
mca_btl_sctp_module.super.btl_exclusivity = MCA_BTL_EXCLUSIVITY_LOW - 1;
mca_btl_sctp_module.super.btl_eager_limit = 64*1024;
mca_btl_sctp_module.super.btl_min_send_size = 64*1024;
mca_btl_sctp_module.super.btl_max_send_size = 128*1024;
mca_btl_sctp_module.super.btl_rdma_pipeline_send_length = 128*1024;
mca_btl_sctp_module.super.btl_rdma_pipeline_frag_size = INT_MAX;
mca_btl_sctp_module.super.btl_min_rdma_pipeline_size = 0;
mca_btl_sctp_module.super.btl_flags = MCA_BTL_FLAGS_PUT |
MCA_BTL_FLAGS_SEND_INPLACE |
MCA_BTL_FLAGS_NEED_CSUM |
MCA_BTL_FLAGS_NEED_ACK |
MCA_BTL_FLAGS_HETEROGENEOUS_RDMA;
mca_btl_sctp_module.super.btl_bandwidth = 100;
mca_btl_sctp_module.super.btl_latency = 100;
mca_btl_base_param_register(&mca_btl_sctp_component.super.btl_version,
&mca_btl_sctp_module.super);
/* disable_family */
/* setup receive buffer */
if(0 == mca_btl_sctp_recv_handler_initbuf()) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
return OMPI_SUCCESS;
}
/*
* module cleanup - sanity checking of queue lengths
*/
int mca_btl_sctp_component_close(void)
{
opal_list_item_t* item;
if(NULL != mca_btl_sctp_component.sctp_if_include) {
free(mca_btl_sctp_component.sctp_if_include);
}
if(NULL != mca_btl_sctp_component.sctp_if_exclude) {
free(mca_btl_sctp_component.sctp_if_exclude);
}
if (NULL != mca_btl_sctp_component.sctp_btls) {
free(mca_btl_sctp_component.sctp_btls);
}
mca_btl_sctp_recv_handler_freebuf();
if (mca_btl_sctp_component.sctp_listen_sd >= 0) {
opal_event_del(&mca_btl_sctp_component.sctp_recv_event);
CLOSE_THE_SOCKET(mca_btl_sctp_component.sctp_listen_sd);
mca_btl_sctp_component.sctp_listen_sd = -1;
}
/* cleanup any pending events */
OPAL_THREAD_LOCK(&mca_btl_sctp_component.sctp_lock);
for(item = opal_list_remove_first(&mca_btl_sctp_component.sctp_events);
item != NULL;
item = opal_list_remove_first(&mca_btl_sctp_component.sctp_events)) {
mca_btl_sctp_event_t* event = (mca_btl_sctp_event_t*)item;
opal_event_del(&event->event);
OBJ_RELEASE(event);
}
OPAL_THREAD_UNLOCK(&mca_btl_sctp_component.sctp_lock);
/* release resources */
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_procs);
#if MCA_BTL_SCTP_DONT_USE_HASH
if(NULL != recvr_proc_table) {
free(recvr_proc_table);
}
if(NULL != sender_proc_table) {
free(sender_proc_table);
}
#else
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_assocID_hash);
#endif
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_events);
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_frag_eager);
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_frag_max);
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_frag_user);
OBJ_DESTRUCT(&mca_btl_sctp_component.sctp_lock);
#ifdef __WINDOWS__
WSACleanup();
#endif
return OMPI_SUCCESS;
}
/*
* Create a btl instance and add to modules list.
*/
static int mca_btl_sctp_create(int if_index, const char* if_name)
{
if(mca_btl_sctp_component.sctp_if_11) {
char param[256];
struct mca_btl_sctp_module_t* btl = (struct mca_btl_sctp_module_t *)malloc(sizeof(mca_btl_sctp_module_t));
if(NULL == btl) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
memcpy(btl, &mca_btl_sctp_module, sizeof(mca_btl_sctp_module));
OBJ_CONSTRUCT(&btl->sctp_endpoints, opal_list_t);
mca_btl_sctp_component.sctp_btls[mca_btl_sctp_component.sctp_num_btls++] = btl;
/* initialize the btl */
btl->sctp_ifindex = if_index;
#if MCA_BTL_SCTP_STATISTICS
btl->sctp_bytes_recv = 0;
btl->sctp_bytes_sent = 0;
btl->sctp_send_handler = 0;
#endif
opal_ifindextoaddr(if_index, (struct sockaddr*)&btl->sctp_ifaddr, sizeof(btl->sctp_ifaddr));
/* prepare for bind call later before connect */
btl->sctp_ifaddr.sin_family = AF_INET;
#ifdef FREEBSD
btl->sctp_ifaddr.sin_len = sizeof(struct sockaddr);
#endif
btl->sctp_ifaddr.sin_port = 0;
opal_ifindextomask(if_index, (uint32_t *)&btl->sctp_ifmask, sizeof(btl->sctp_ifmask));
/* allow user to specify interface bandwidth */
sprintf(param, "bandwidth_%s", if_name);
btl->super.btl_bandwidth = mca_btl_sctp_param_register_int(param, 0);
/* allow user to override/specify latency ranking */
sprintf(param, "latency_%s", if_name);
btl->super.btl_latency = mca_btl_sctp_param_register_int(param, 0);
#if 0 && OMPI_ENABLE_DEBUG
BTL_OUTPUT(("interface: %s bandwidth %d latency %d",
if_name, btl->super.btl_bandwidth, btl->super.btl_latency));
#endif
return OMPI_SUCCESS;
}
else {
/* 1 to many */
struct mca_btl_sctp_module_t* btl;
char param[256];
struct sockaddr_in next_ifaddr;
socklen_t len = sizeof(struct sockaddr_in);
opal_socklen_t addrlen;
/* check if this is the first time this function is being called */
if(0 == mca_btl_sctp_component.sctp_num_btls) {
/* fill in btl struct with first interface's information (arbitary) */
btl = (struct mca_btl_sctp_module_t *)malloc(sizeof(mca_btl_sctp_module_t));
if(NULL == btl) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
memcpy(btl, &mca_btl_sctp_module, sizeof(mca_btl_sctp_module));
OBJ_CONSTRUCT(&btl->sctp_endpoints, opal_list_t);
mca_btl_sctp_component.sctp_btls[mca_btl_sctp_component.sctp_num_btls++] = btl;
/* initialize the btl */
btl->sctp_ifindex = if_index;
#if MCA_BTL_SCTP_STATISTICS
btl->sctp_bytes_recv = 0;
btl->sctp_bytes_sent = 0;
btl->sctp_send_handler = 0;
#endif
opal_ifindextoaddr(if_index, (struct sockaddr*)&btl->sctp_ifaddr, sizeof(btl->sctp_ifaddr));
opal_ifindextomask(if_index, (uint32_t *)&btl->sctp_ifmask, sizeof(btl->sctp_ifmask));
/* allow user to specify interface bandwidth */
sprintf(param, "bandwidth_%s", if_name);
btl->super.btl_bandwidth = mca_btl_sctp_param_register_int(param, 0);
/* allow user to override/specify latency ranking */
sprintf(param, "latency_%s", if_name);
btl->super.btl_latency = mca_btl_sctp_param_register_int(param, 0);
#if 0 && OMPI_ENABLE_DEBUG
BTL_OUTPUT(("interface: %s bandwidth %d latency %d",
if_name, btl->super.btl_bandwidth, btl->super.btl_latency));
#endif
/* call bind to this (initial) addr */
opal_ifindextoaddr(if_index, (struct sockaddr*)&next_ifaddr, sizeof(next_ifaddr));
next_ifaddr.sin_family = AF_INET;
#ifdef FREEBSD
next_ifaddr.sin_len = sizeof(struct sockaddr);
#endif
next_ifaddr.sin_port = 0;
if(bind(mca_btl_sctp_component.sctp_listen_sd, (struct sockaddr *) &next_ifaddr, len) < 0) {
return OMPI_ERR_FATAL;
}
/* resolve system assignend port */
addrlen = sizeof(struct sockaddr_in);
if(getsockname(mca_btl_sctp_component.sctp_listen_sd, (struct sockaddr*)&next_ifaddr, &addrlen) < 0) {
BTL_ERROR(("getsockname() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
/* need to get the port after the first bind call for subsequent
* sctp_bindx calls.
*/
mca_btl_sctp_component.sctp_listen_port = next_ifaddr.sin_port;
}
else {
next_ifaddr.sin_port = htons((unsigned short) mca_btl_sctp_component.sctp_listen_port);
/* add this addr to bindx */
opal_ifindextoaddr(if_index, (struct sockaddr*)&next_ifaddr, sizeof(next_ifaddr));
next_ifaddr.sin_family = AF_INET;
#ifdef FREEBSD
next_ifaddr.sin_len = sizeof(struct sockaddr);
#endif
if(sctp_bindx(mca_btl_sctp_component.sctp_listen_sd, (struct sockaddr *) &next_ifaddr,
1, SCTP_BINDX_ADD_ADDR) < 0) {
return OMPI_ERR_FATAL;
}
}
return OMPI_SUCCESS;
}
}
/*
* Create SCTP BTL instance(s) using either:
* (1) all interfaces specified by the user
* (2) all available interfaces
* (3) all available interfaces except for those excluded by the user
*
* For 1-1 sockets, have a BTL per interface.
* For 1-many sockets, use bind for the first interface and sctp_bindx for each interface thereafter.
*
*/
static int mca_btl_sctp_component_create_instance(void)
{
int if_count = opal_ifcount();
int if_index;
char **include;
char **exclude;
char **argv;
if(if_count <= 0) {
return OMPI_ERROR;
}
/* allocate memory for btl */
mca_btl_sctp_component.sctp_btls = (mca_btl_sctp_module_t **)malloc(sizeof(mca_btl_sctp_module_t*));
if(NULL == mca_btl_sctp_component.sctp_btls) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
/* if the user specified an interface list - use these exclusively */
argv = include = opal_argv_split(mca_btl_sctp_component.sctp_if_include,',');
while(argv && *argv) {
char* if_name = *argv;
int if_index = opal_ifnametoindex(if_name);
if(if_index < 0) {
BTL_ERROR(("invalid interface \"%s\"", if_name));
} else {
mca_btl_sctp_create(if_index, if_name);
}
argv++;
}
opal_argv_free(include);
if(mca_btl_sctp_component.sctp_num_btls) {
return OMPI_SUCCESS;
}
/* if the interface list was not specified by the user, create
* a BTL for each interface that was not excluded.
*/
exclude = opal_argv_split(mca_btl_sctp_component.sctp_if_exclude,',');
for(if_index = opal_ifbegin(); if_index >= 0; if_index = opal_ifnext(if_index)) {
char if_name[32];
opal_ifindextoname(if_index, if_name, sizeof(if_name));
/* check to see if this interface exists in the exclude list */
if(opal_ifcount() > 1) {
argv = exclude;
while(argv && *argv) {
if(strncmp(*argv,if_name,strlen(*argv)) == 0) {
break;
}
argv++;
}
/* if this interface was not found in the excluded list - create a BTL */
if(argv == 0 || *argv == 0) {
mca_btl_sctp_create(if_index, if_name);
}
} else {
mca_btl_sctp_create(if_index, if_name);
}
}
opal_argv_free(exclude);
return OMPI_SUCCESS;
}
/*
* Create a listen socket and bind to all interfaces
*/
static int mca_btl_sctp_component_create_listen(void)
{
if(mca_btl_sctp_component.sctp_if_11) {
/* 1 to 1 */
int rc;
struct sockaddr_in inaddr;
opal_socklen_t addrlen;
/* create a listen socket for incoming connections */
mca_btl_sctp_component.sctp_listen_sd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if(mca_btl_sctp_component.sctp_listen_sd < 0) {
BTL_ERROR(("socket() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
if((rc = mca_btl_sctp_set_socket_options(mca_btl_sctp_component.sctp_listen_sd)) != OMPI_SUCCESS) {
return rc;
}
/* bind to all addresses and dynamically assigned port */
memset(&inaddr, 0, sizeof(inaddr));
inaddr.sin_family = AF_INET;
inaddr.sin_addr.s_addr = INADDR_ANY;
inaddr.sin_port = 0;
if(bind(mca_btl_sctp_component.sctp_listen_sd, (struct sockaddr*)&inaddr, sizeof(inaddr)) < 0) {
BTL_ERROR(("bind() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
/* resolve system assignend port */
addrlen = sizeof(struct sockaddr_in);
if(getsockname(mca_btl_sctp_component.sctp_listen_sd, (struct sockaddr*)&inaddr, &addrlen) < 0) {
BTL_ERROR(("getsockname() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
mca_btl_sctp_component.sctp_listen_port = inaddr.sin_port;
/* setup listen backlog to maximum allowed by kernel */
if(listen(mca_btl_sctp_component.sctp_listen_sd, SOMAXCONN) < 0) {
BTL_ERROR(("listen() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
/* register listen port */
opal_event_set(
&mca_btl_sctp_component.sctp_recv_event,
mca_btl_sctp_component.sctp_listen_sd,
OPAL_EV_READ|OPAL_EV_PERSIST,
mca_btl_sctp_component_recv_handler,
0);
opal_event_add(&mca_btl_sctp_component.sctp_recv_event,0);
return OMPI_SUCCESS;
}
else {
/* 1 to many */
int rc;
/* create a one to many listen socket for incoming connections and ALL sent/received messages */
mca_btl_sctp_component.sctp_listen_sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
if(mca_btl_sctp_component.sctp_listen_sd < 0) {
BTL_ERROR(("socket() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
if((rc = mca_btl_sctp_set_socket_options(mca_btl_sctp_component.sctp_listen_sd)) != OMPI_SUCCESS) {
return rc;
}
/* port set to zero to indicate "unset" in mca_btl_sctp_create */
mca_btl_sctp_component.sctp_listen_port = 0;
return OMPI_SUCCESS;
}
}
static int mca_btl_sctp_component_register_listen(void)
{
/* setup listen backlog to maximum allowed by kernel */
if(listen(mca_btl_sctp_component.sctp_listen_sd, SOMAXCONN) < 0) {
BTL_ERROR(("listen() failed with errno=%d", opal_socket_errno));
return OMPI_ERROR;
}
/* register listen port */
opal_event_set(
&mca_btl_sctp_component.sctp_recv_event,
mca_btl_sctp_component.sctp_listen_sd,
OPAL_EV_READ|OPAL_EV_PERSIST,
mca_btl_sctp_recv_handler,
0);
opal_event_add(&mca_btl_sctp_component.sctp_recv_event,0);
return OMPI_SUCCESS;
}
/*
* Register SCTP module addressing information. The MCA framework
* will make this available to all peers.
*/
static int mca_btl_sctp_component_exchange(void)
{
int rc=0;
size_t i=0;
size_t size = mca_btl_sctp_component.sctp_num_btls * sizeof(mca_btl_sctp_addr_t);
if(mca_btl_sctp_component.sctp_num_btls != 0) {
mca_btl_sctp_addr_t *addrs = (mca_btl_sctp_addr_t *)malloc(size);
for(i=0; i<mca_btl_sctp_component.sctp_num_btls; i++) {
struct mca_btl_sctp_module_t* btl = mca_btl_sctp_component.sctp_btls[i];
addrs[i].addr_inet = btl->sctp_ifaddr.sin_addr;
addrs[i].addr_port = mca_btl_sctp_component.sctp_listen_port;
addrs[i].addr_inuse = 0;
}
rc = ompi_modex_send(&mca_btl_sctp_component.super.btl_version, addrs, size);
free(addrs);
}
return rc;
}
/*
* SCTP module initialization:
* (1) read interface list from kernel and compare against module parameters
* then create a BTL instance for selected interfaces
* (2) setup SCTP listen socket for incoming connection attempts
* (3) register BTL parameters with the MCA
*/
mca_btl_base_module_t** mca_btl_sctp_component_init(int *num_btl_modules,
bool enable_progress_threads,
bool enable_mpi_threads)
{
if(mca_btl_sctp_component.sctp_if_11) {
/* 1 to 1 */
mca_btl_base_module_t **btls;
*num_btl_modules = 0;
/* initialize free lists */
ompi_free_list_init( &mca_btl_sctp_component.sctp_frag_eager,
sizeof (mca_btl_sctp_frag_eager_t) +
mca_btl_sctp_module.super.btl_eager_limit,
OBJ_CLASS (mca_btl_sctp_frag_eager_t),
mca_btl_sctp_component.sctp_free_list_num,
mca_btl_sctp_component.sctp_free_list_max,
mca_btl_sctp_component.sctp_free_list_inc,
NULL );
ompi_free_list_init( &mca_btl_sctp_component.sctp_frag_max,
sizeof (mca_btl_sctp_frag_max_t) +
mca_btl_sctp_module.super.btl_max_send_size,
OBJ_CLASS (mca_btl_sctp_frag_max_t),
mca_btl_sctp_component.sctp_free_list_num,
mca_btl_sctp_component.sctp_free_list_max,
mca_btl_sctp_component.sctp_free_list_inc,
NULL );
ompi_free_list_init( &mca_btl_sctp_component.sctp_frag_user,
sizeof (mca_btl_sctp_frag_user_t),
OBJ_CLASS (mca_btl_sctp_frag_user_t),
mca_btl_sctp_component.sctp_free_list_num,
mca_btl_sctp_component.sctp_free_list_max,
mca_btl_sctp_component.sctp_free_list_inc,
NULL );
/* create a BTL SCTP module for selected interfaces */
if(mca_btl_sctp_component_create_instance() != OMPI_SUCCESS) {
return 0;
}
/* create a SCTP listen socket for incoming connection attempts */
if(mca_btl_sctp_component_create_listen() != OMPI_SUCCESS) {
return 0;
}
/* publish SCTP parameters with the MCA framework */
if(mca_btl_sctp_component_exchange() != OMPI_SUCCESS) {
return 0;
}
btls = (mca_btl_base_module_t **)malloc(mca_btl_sctp_component.sctp_num_btls *
sizeof(mca_btl_base_module_t*));
if(NULL == btls) {
return NULL;
}
memcpy(btls, mca_btl_sctp_component.sctp_btls, mca_btl_sctp_component.sctp_num_btls*sizeof(mca_btl_sctp_module_t*));
*num_btl_modules = mca_btl_sctp_component.sctp_num_btls;
return btls;
}
else {
/* 1 to many */
int i;
mca_btl_base_module_t **btls;
*num_btl_modules = 0;
/* initialize free lists */
ompi_free_list_init( &mca_btl_sctp_component.sctp_frag_eager,
sizeof (mca_btl_sctp_frag_eager_t) +
mca_btl_sctp_module.super.btl_eager_limit,
OBJ_CLASS (mca_btl_sctp_frag_eager_t),
mca_btl_sctp_component.sctp_free_list_num,
mca_btl_sctp_component.sctp_free_list_max,
mca_btl_sctp_component.sctp_free_list_inc,
NULL );
ompi_free_list_init( &mca_btl_sctp_component.sctp_frag_max,
sizeof (mca_btl_sctp_frag_max_t) +
mca_btl_sctp_module.super.btl_max_send_size,
OBJ_CLASS (mca_btl_sctp_frag_max_t),
mca_btl_sctp_component.sctp_free_list_num,
mca_btl_sctp_component.sctp_free_list_max,
mca_btl_sctp_component.sctp_free_list_inc,
NULL );
ompi_free_list_init( &mca_btl_sctp_component.sctp_frag_user,
sizeof (mca_btl_sctp_frag_user_t),
OBJ_CLASS (mca_btl_sctp_frag_user_t),
mca_btl_sctp_component.sctp_free_list_num,
mca_btl_sctp_component.sctp_free_list_max,
mca_btl_sctp_component.sctp_free_list_inc,
NULL );
/* create a SCTP listen socket for incoming connection attempts */
if(mca_btl_sctp_component_create_listen() != OMPI_SUCCESS) {
return 0;
}
/* create a BTL SCTP module for selected interfaces */
if(mca_btl_sctp_component_create_instance() != OMPI_SUCCESS) {
return 0;
}
/* register the now completed single BTL */
if(mca_btl_sctp_component_register_listen() != OMPI_SUCCESS) {
return 0;
}
/* publish SCTP parameters with the MCA framework */
if(mca_btl_sctp_component_exchange() != OMPI_SUCCESS) {
return 0;
}
#if MCA_BTL_SCTP_DONT_USE_HASH
/* Initialize the proc_tables to all negative ones. */
recvr_proc_table = (mca_btl_sctp_proc_table_node *) malloc(sizeof(mca_btl_sctp_proc_table_node) * MCA_BTL_SCTP_PROC_TABLE_SIZE);
sender_proc_table = (mca_btl_sctp_proc_table_node *) malloc(sizeof(mca_btl_sctp_proc_table_node) * MCA_BTL_SCTP_PROC_TABLE_SIZE);
if(NULL == recvr_proc_table || NULL == sender_proc_table) {
return 0;
}
for(i = 0; i < MCA_BTL_SCTP_PROC_TABLE_SIZE; i++) {
recvr_proc_table[i].valid = 0;
recvr_proc_table[i].sctp_assoc_id = 0;
recvr_proc_table[i].proc = NULL;
sender_proc_table[i].valid = 0;
sender_proc_table[i].sctp_assoc_id = 0;
sender_proc_table[i].proc = NULL;
}
#endif
btls = (mca_btl_base_module_t **)malloc(mca_btl_sctp_component.sctp_num_btls *
sizeof(mca_btl_base_module_t*));
if(NULL == btls) {
return NULL;
}
memcpy(btls, mca_btl_sctp_component.sctp_btls, mca_btl_sctp_component.sctp_num_btls*sizeof(mca_btl_sctp_module_t*));
*num_btl_modules = mca_btl_sctp_component.sctp_num_btls;
return btls;
}
}
/*
* SCTP module control
*/
int mca_btl_sctp_component_control(int param, void* value, size_t size)
{
return OMPI_SUCCESS;
}
/*
* Called by mca_btl_sctp_component_recv() when the SCTP listen
* socket has pending connection requests. Accept incoming
* requests and queue for completion of the connection handshake.
*/
void mca_btl_sctp_component_accept(void)
{
if(mca_btl_sctp_component.sctp_if_11) {
/* 1 to 1 */
while(true) {
opal_socklen_t addrlen = sizeof(struct sockaddr_in);
struct sockaddr_in addr;
mca_btl_sctp_event_t *event;
int rc, sd = accept(mca_btl_sctp_component.sctp_listen_sd, (struct sockaddr*)&addr, &addrlen);
if(sd < 0) {
if(opal_socket_errno == EINTR) {
continue;
}
if(opal_socket_errno == ECONNRESET || opal_socket_errno == EBADF) {
/* closed remotely while on listen queue */
close(sd);
}
else if(opal_socket_errno != EAGAIN && opal_socket_errno != EWOULDBLOCK) {
BTL_ERROR(("accept() failed with errno %d.", opal_socket_errno));
}
return;
}
if((rc = mca_btl_sctp_set_socket_options(sd)) != OMPI_SUCCESS) {
BTL_ERROR(("failed to set socket options"));
return;
}
/* wait for receipt of peers process identifier to complete this connection */
event = OBJ_NEW(mca_btl_sctp_event_t);
opal_event_set(&event->event, sd, OPAL_EV_READ, mca_btl_sctp_component_recv_handler, event);
opal_event_add(&event->event, 0);
}
}
else {
/* 1 to many */
/* Called by mca_btl_sctp_recv_handler to get a valid *user pointer */
mca_btl_sctp_event_t *event;
int sd = mca_btl_sctp_component.sctp_listen_sd;
if(sd < 0) {
BTL_ERROR(("mca_btl_sctp_component_accept(): Invalid socket descriptor.\n"));
}
/* wait for receipt of peers process identifier to complete this connection */
event = OBJ_NEW(mca_btl_sctp_event_t);
opal_event_set(&event->event, sd, OPAL_EV_READ, mca_btl_sctp_recv_handler, event);
opal_event_add(&event->event, 0);
}
}
/* Used only with one-to-one socket.
*
* Event callback when there is data available on the registered
* socket to recv.
*/
static void mca_btl_sctp_component_recv_handler(int sd, short flags, void* user)
{
orte_process_name_t guid;
struct sockaddr_in addr;
int retval;
mca_btl_sctp_proc_t* btl_proc;
opal_socklen_t addr_len = sizeof(addr);
mca_btl_sctp_event_t *event = (mca_btl_sctp_event_t *)user;
int msg_flags=0;
struct sctp_sndrcvinfo sri;
/* accept new connections on the listen socket */
if(mca_btl_sctp_component.sctp_listen_sd == sd) {
mca_btl_sctp_component_accept();
return;
}
OBJ_RELEASE(event);
retval = sctp_recvmsg(sd, (char *)&guid, sizeof(guid), 0, 0, &sri, &msg_flags);
if(retval != sizeof(guid)) {
CLOSE_THE_SOCKET(sd);
return;
}
ORTE_PROCESS_NAME_NTOH(guid);
/* lookup the corresponding process */
btl_proc = mca_btl_sctp_proc_lookup(&guid);
if(NULL == btl_proc) {
BTL_ERROR(("errno=%d",errno));
CLOSE_THE_SOCKET(sd);
return;
}
/* lookup peer address */
if(getpeername(sd, (struct sockaddr*)&addr, &addr_len) != 0) {
if(opal_socket_errno != ECONNRESET && opal_socket_errno != EBADF && opal_socket_errno != ENOTCONN) {
BTL_ERROR(("getpeername() failed with errno=%d", opal_socket_errno));
}
CLOSE_THE_SOCKET(sd);
return;
}
/* are there any existing peer instances will to accept this connection */
if(mca_btl_sctp_proc_accept(btl_proc, &addr, sd) == false) {
CLOSE_THE_SOCKET(sd);
return;
}
}
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