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/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2009 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 (c) 2007-2012 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2008 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2009 Oak Ridge National Laboratory
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#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
#if OPAL_WANT_IPV6
# ifdef HAVE_NETDB_H
# include <netdb.h>
# endif
#endif
#include <ctype.h>
#include <limits.h>
#include "opal/event/event.h"
#include "opal/util/if.h"
#include "opal/util/output.h"
#include "opal/util/argv.h"
#include "opal/util/net.h"
#include "opal/mca/base/mca_base_param.h"
#include "orte/types.h"
#include "orte/util/show_help.h"
#include "orte/mca/ess/ess.h"
#include "ompi/constants.h"
#include "ompi/mca/btl/btl.h"
#include "ompi/mca/btl/base/base.h"
#include "ompi/runtime/ompi_module_exchange.h"
#include "ompi/mca/mpool/base/base.h"
#include "ompi/mca/btl/base/btl_base_error.h"
#include "btl_tcp.h"
#include "btl_tcp_addr.h"
#include "btl_tcp_proc.h"
#include "btl_tcp_frag.h"
#include "btl_tcp_endpoint.h"
/*
* Local functions
*/
static int mca_btl_tcp_component_register(void);
static int mca_btl_tcp_component_open(void);
static int mca_btl_tcp_component_close(void);
mca_btl_tcp_component_t mca_btl_tcp_component = {
{
/* First, the mca_base_component_t struct containing meta information
about the component itself */
{
MCA_BTL_BASE_VERSION_2_0_0,
"tcp", /* 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_tcp_component_open, /* component open */
mca_btl_tcp_component_close, /* component close */
NULL, /* component query */
mca_btl_tcp_component_register, /* component register */
},
{
/* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
mca_btl_tcp_component_init,
NULL,
}
};
/*
* utility routines for parameter registration
*/
static inline char* mca_btl_tcp_param_register_string(
const char* param_name,
const char* help_string,
const char* default_value)
{
char *value;
mca_base_param_reg_string(&mca_btl_tcp_component.super.btl_version,
param_name, help_string, false, false,
default_value, &value);
return value;
}
static inline int mca_btl_tcp_param_register_int(
const char* param_name,
const char* help_string,
int default_value)
{
int value;
mca_base_param_reg_int(&mca_btl_tcp_component.super.btl_version,
param_name, help_string, false, false,
default_value, &value);
return value;
}
/*
* Data structure for accepting connections.
*/
struct mca_btl_tcp_event_t {
opal_list_item_t item;
opal_event_t event;
};
typedef struct mca_btl_tcp_event_t mca_btl_tcp_event_t;
static void mca_btl_tcp_event_construct(mca_btl_tcp_event_t* event)
{
OPAL_THREAD_LOCK(&mca_btl_tcp_component.tcp_lock);
opal_list_append(&mca_btl_tcp_component.tcp_events, &event->item);
OPAL_THREAD_UNLOCK(&mca_btl_tcp_component.tcp_lock);
}
static void mca_btl_tcp_event_destruct(mca_btl_tcp_event_t* event)
{
OPAL_THREAD_LOCK(&mca_btl_tcp_component.tcp_lock);
opal_list_remove_item(&mca_btl_tcp_component.tcp_events, &event->item);
OPAL_THREAD_UNLOCK(&mca_btl_tcp_component.tcp_lock);
}
OBJ_CLASS_INSTANCE(
mca_btl_tcp_event_t,
opal_list_item_t,
mca_btl_tcp_event_construct,
mca_btl_tcp_event_destruct);
/*
* functions for receiving event callbacks
*/
static void mca_btl_tcp_component_recv_handler(int, short, void*);
static void mca_btl_tcp_component_accept_handler(int, short, void*);
/*
* Called by MCA framework to open the component, registers
* component parameters.
*/
static int mca_btl_tcp_component_register(void)
{
char* message;
/* register TCP component parameters */
mca_btl_tcp_component.tcp_num_links =
mca_btl_tcp_param_register_int("links", NULL, 1);
mca_btl_tcp_component.tcp_if_include =
mca_btl_tcp_param_register_string("if_include", "Comma-delimited list of devices or CIDR notation of networks to use for MPI communication (e.g., \"eth0,eth1\" or \"192.168.0.0/16,10.1.4.0/24\"). Mutually exclusive with btl_tcp_if_exclude.", "");
mca_btl_tcp_component.tcp_if_exclude =
mca_btl_tcp_param_register_string("if_exclude", "Comma-delimited list of devices and/or CIDR notation of networks to NOT use for MPI communication -- all devices not matching these specifications will be used (e.g., \"eth0,192.168.0.0/16\"). If set to a non-default value, it is mutually exclusive with btl_tcp_if_include.",
#ifndef __WINDOWS__
"127.0.0.1/8,sppp"
#else
""
#endif
);
mca_btl_tcp_component.tcp_free_list_num =
mca_btl_tcp_param_register_int ("free_list_num", NULL, 8);
mca_btl_tcp_component.tcp_free_list_max =
mca_btl_tcp_param_register_int ("free_list_max", NULL, -1);
mca_btl_tcp_component.tcp_free_list_inc =
mca_btl_tcp_param_register_int ("free_list_inc", NULL, 32);
mca_btl_tcp_component.tcp_sndbuf =
mca_btl_tcp_param_register_int ("sndbuf", NULL, 128*1024);
mca_btl_tcp_component.tcp_rcvbuf =
mca_btl_tcp_param_register_int ("rcvbuf", NULL, 128*1024);
mca_btl_tcp_component.tcp_endpoint_cache =
mca_btl_tcp_param_register_int ("endpoint_cache",
"The size of the internal cache for each TCP connection. This cache is"
" used to reduce the number of syscalls, by replacing them with memcpy."
" Every read will read the expected data plus the amount of the"
" endpoint_cache", 30*1024);
mca_btl_tcp_component.tcp_use_nodelay =
!mca_btl_tcp_param_register_int ("use_nagle", "Whether to use Nagle's algorithm or not (using Nagle's algorithm may increase short message latency)", 0);
mca_btl_tcp_component.tcp_port_min =
mca_btl_tcp_param_register_int( "port_min_v4",
"The minimum port where the TCP BTL will try to bind (default 1024)", 1024 );
if( mca_btl_tcp_component.tcp_port_min > USHRT_MAX ) {
orte_show_help("help-mpi-btl-tcp.txt", "invalid minimum port",
true, "v4", orte_process_info.nodename,
mca_btl_tcp_component.tcp_port_min );
mca_btl_tcp_component.tcp_port_min = 1024;
}
asprintf( &message,
"The number of ports where the TCP BTL will try to bind (default %d)."
" This parameter together with the port min, define a range of ports"
" where Open MPI will open sockets.",
(0x1 << 16) - mca_btl_tcp_component.tcp_port_min - 1 );
mca_btl_tcp_component.tcp_port_range =
mca_btl_tcp_param_register_int( "port_range_v4", message,
(0x1 << 16) - mca_btl_tcp_component.tcp_port_min - 1);
free(message);
#if OPAL_WANT_IPV6
mca_btl_tcp_component.tcp6_port_min =
mca_btl_tcp_param_register_int( "port_min_v6",
"The minimum port where the TCP BTL will try to bind (default 1024)", 1024 );
if( mca_btl_tcp_component.tcp6_port_min > USHRT_MAX ) {
orte_show_help("help-mpi-btl-tcp.txt", "invalid minimum port",
true, "v6", orte_process_info.nodename,
mca_btl_tcp_component.tcp6_port_min );
mca_btl_tcp_component.tcp6_port_min = 1024;
}
asprintf( &message,
"The number of ports where the TCP BTL will try to bind (default %d)."
" This parameter together with the port min, define a range of ports"
" where Open MPI will open sockets.",
(0x1 << 16) - mca_btl_tcp_component.tcp6_port_min - 1 );
mca_btl_tcp_component.tcp6_port_range =
mca_btl_tcp_param_register_int( "port_range_v6", message,
(0x1 << 16) - mca_btl_tcp_component.tcp6_port_min - 1);
free(message);
#endif
mca_btl_tcp_module.super.btl_exclusivity = MCA_BTL_EXCLUSIVITY_LOW + 100;
mca_btl_tcp_module.super.btl_eager_limit = 64*1024;
mca_btl_tcp_module.super.btl_rndv_eager_limit = 64*1024;
mca_btl_tcp_module.super.btl_max_send_size = 128*1024;
mca_btl_tcp_module.super.btl_rdma_pipeline_send_length = 128*1024;
mca_btl_tcp_module.super.btl_rdma_pipeline_frag_size = INT_MAX;
mca_btl_tcp_module.super.btl_min_rdma_pipeline_size = 0;
mca_btl_tcp_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_tcp_module.super.btl_bandwidth = 100;
mca_btl_tcp_module.super.btl_latency = 100;
mca_btl_base_param_register(&mca_btl_tcp_component.super.btl_version,
&mca_btl_tcp_module.super);
mca_btl_tcp_component.tcp_disable_family =
mca_btl_tcp_param_register_int ("disable_family", NULL, 0);
/* Register a list of interfaces to use in sequence */
message = mca_btl_tcp_param_register_string("if_seq",
"If specified, a comma-delimited list of TCP interfaces. Interfaces will be assigned, one to each MPI process, in a round-robin fashion on each server. For example, if the list is \"eth0,eth1\" and four MPI processes are run on a single server, then local ranks 0 and 2 will use eth0 and local ranks 1 and 3 will use eth1.", NULL);
mca_btl_tcp_component.tcp_if_seq = NULL;
if (NULL != message && '\0' != *message) {
char **argv = opal_argv_split(message, ',');
if (NULL != argv && '\0' != *(argv[0])) {
int if_index, rc, count;
orte_node_rank_t node_rank;
char name[256];
node_rank = orte_ess.get_node_rank(ORTE_PROC_MY_NAME);
/* Now that we've got that local rank, take the
corresponding entry from the tcp_if_seq list (wrapping
if necessary) */
count = opal_argv_count(argv);
mca_btl_tcp_component.tcp_if_seq =
strdup(argv[node_rank % count]);
opal_argv_free(argv);
/* Double check that the selected interface actually exists */
for (if_index = opal_ifbegin(); if_index >= 0;
if_index = opal_ifnext(if_index)){
if (OPAL_SUCCESS !=
(rc = opal_ifindextoname(if_index, name, sizeof(name)))) {
return rc;
}
if (0 == strcmp(name, mca_btl_tcp_component.tcp_if_seq)) {
break;
}
}
if (if_index < 0) {
orte_show_help("help-mpi-btl-tcp.txt",
"invalid if_inexclude",
true, "if_seq",
orte_process_info.nodename,
mca_btl_tcp_component.tcp_if_seq,
"Interface does not exist");
return OMPI_ERR_BAD_PARAM;
}
BTL_VERBOSE(("Node rank %d using TCP interface %s",
node_rank, mca_btl_tcp_component.tcp_if_seq));
}
}
return OMPI_SUCCESS;
}
static int mca_btl_tcp_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_tcp_component.tcp_listen_sd = -1;
#if OPAL_WANT_IPV6
mca_btl_tcp_component.tcp6_listen_sd = -1;
#endif
mca_btl_tcp_component.tcp_num_btls=0;
mca_btl_tcp_component.tcp_addr_count = 0;
mca_btl_tcp_component.tcp_btls=NULL;
/* initialize objects */
OBJ_CONSTRUCT(&mca_btl_tcp_component.tcp_lock, opal_mutex_t);
OBJ_CONSTRUCT(&mca_btl_tcp_component.tcp_procs, opal_hash_table_t);
OBJ_CONSTRUCT(&mca_btl_tcp_component.tcp_events, opal_list_t);
OBJ_CONSTRUCT(&mca_btl_tcp_component.tcp_frag_eager, ompi_free_list_t);
OBJ_CONSTRUCT(&mca_btl_tcp_component.tcp_frag_max, ompi_free_list_t);
OBJ_CONSTRUCT(&mca_btl_tcp_component.tcp_frag_user, ompi_free_list_t);
opal_hash_table_init(&mca_btl_tcp_component.tcp_procs, 256);
/* if_include and if_exclude need to be mutually exclusive */
if (OPAL_SUCCESS !=
mca_base_param_check_exclusive_string(
mca_btl_tcp_component.super.btl_version.mca_type_name,
mca_btl_tcp_component.super.btl_version.mca_component_name,
"if_include",
mca_btl_tcp_component.super.btl_version.mca_type_name,
mca_btl_tcp_component.super.btl_version.mca_component_name,
"if_exclude")) {
/* Return ERR_NOT_AVAILABLE so that a warning message about
"open" failing is not printed */
return OMPI_ERR_NOT_AVAILABLE;
}
return OMPI_SUCCESS;
}
/*
* module cleanup - sanity checking of queue lengths
*/
static int mca_btl_tcp_component_close(void)
{
opal_list_item_t* item;
opal_list_item_t* next;
if(NULL != mca_btl_tcp_component.tcp_if_include) {
free(mca_btl_tcp_component.tcp_if_include);
mca_btl_tcp_component.tcp_if_include = NULL;
}
if(NULL != mca_btl_tcp_component.tcp_if_exclude) {
free(mca_btl_tcp_component.tcp_if_exclude);
mca_btl_tcp_component.tcp_if_exclude = NULL;
}
if (NULL != mca_btl_tcp_component.tcp_if_seq) {
free(mca_btl_tcp_component.tcp_if_seq);
}
if (NULL != mca_btl_tcp_component.tcp_btls)
free(mca_btl_tcp_component.tcp_btls);
if (mca_btl_tcp_component.tcp_listen_sd >= 0) {
opal_event_del(&mca_btl_tcp_component.tcp_recv_event);
CLOSE_THE_SOCKET(mca_btl_tcp_component.tcp_listen_sd);
mca_btl_tcp_component.tcp_listen_sd = -1;
}
#if OPAL_WANT_IPV6
if (mca_btl_tcp_component.tcp6_listen_sd >= 0) {
opal_event_del(&mca_btl_tcp_component.tcp6_recv_event);
CLOSE_THE_SOCKET(mca_btl_tcp_component.tcp6_listen_sd);
mca_btl_tcp_component.tcp6_listen_sd = -1;
}
#endif
/* cleanup any pending events */
OPAL_THREAD_LOCK(&mca_btl_tcp_component.tcp_lock);
for(item = opal_list_get_first(&mca_btl_tcp_component.tcp_events);
item != opal_list_get_end(&mca_btl_tcp_component.tcp_events);
item = next) {
mca_btl_tcp_event_t* event = (mca_btl_tcp_event_t*)item;
next = opal_list_get_next(item);
opal_event_del(&event->event);
OBJ_RELEASE(event);
}
OPAL_THREAD_UNLOCK(&mca_btl_tcp_component.tcp_lock);
/* release resources */
OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_procs);
OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_events);
OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_frag_eager);
OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_frag_max);
OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_frag_user);
OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_lock);
#ifdef __WINDOWS__
WSACleanup();
#endif
return OMPI_SUCCESS;
}
/*
* Create a btl instance and add to modules list.
*/
static int mca_btl_tcp_create(int if_kindex, const char* if_name)
{
struct mca_btl_tcp_module_t* btl;
char param[256];
int i;
for( i = 0; i < (int)mca_btl_tcp_component.tcp_num_links; i++ ) {
btl = (struct mca_btl_tcp_module_t *)malloc(sizeof(mca_btl_tcp_module_t));
if(NULL == btl)
return OMPI_ERR_OUT_OF_RESOURCE;
memcpy(btl, &mca_btl_tcp_module, sizeof(mca_btl_tcp_module));
OBJ_CONSTRUCT(&btl->tcp_endpoints, opal_list_t);
mca_btl_tcp_component.tcp_btls[mca_btl_tcp_component.tcp_num_btls++] = btl;
/* initialize the btl */
btl->tcp_ifkindex = (uint16_t) if_kindex;
#if MCA_BTL_TCP_STATISTICS
btl->tcp_bytes_recv = 0;
btl->tcp_bytes_sent = 0;
btl->tcp_send_handler = 0;
#endif
/* allow user to specify interface bandwidth */
sprintf(param, "bandwidth_%s", if_name);
btl->super.btl_bandwidth = mca_btl_tcp_param_register_int(param, NULL, btl->super.btl_bandwidth);
/* allow user to override/specify latency ranking */
sprintf(param, "latency_%s", if_name);
btl->super.btl_latency = mca_btl_tcp_param_register_int(param, NULL, btl->super.btl_latency);
if( i > 0 ) {
btl->super.btl_bandwidth >>= 1;
btl->super.btl_latency <<= 1;
}
/* allow user to specify interface bandwidth */
sprintf(param, "bandwidth_%s:%d", if_name, i);
btl->super.btl_bandwidth = mca_btl_tcp_param_register_int(param, NULL, btl->super.btl_bandwidth);
/* allow user to override/specify latency ranking */
sprintf(param, "latency_%s:%d", if_name, i);
btl->super.btl_latency = mca_btl_tcp_param_register_int(param, NULL, btl->super.btl_latency);
#if 0 && OPAL_ENABLE_DEBUG
BTL_OUTPUT(("interface %s instance %i: bandwidth %d latency %d\n", if_name, i,
btl->super.btl_bandwidth, btl->super.btl_latency));
#endif
}
return OMPI_SUCCESS;
}
/*
* Go through a list of argv; if there are any subnet specifications
* (a.b.c.d/e), resolve them to an interface name (Currently only
* supporting IPv4). If unresolvable, warn and remove.
*/
static char **split_and_resolve(char **orig_str, char *name)
{
int i, ret, save, if_index;
char **argv, *str, *tmp;
char if_name[IF_NAMESIZE];
struct sockaddr_storage argv_inaddr, if_inaddr;
uint32_t argv_prefix;
/* Sanity check */
if (NULL == orig_str || NULL == *orig_str) {
return NULL;
}
argv = opal_argv_split(*orig_str, ',');
if (NULL == argv) {
return NULL;
}
for (save = i = 0; NULL != argv[i]; ++i) {
if (isalpha(argv[i][0])) {
argv[save++] = argv[i];
continue;
}
/* Found a subnet notation. Convert it to an IP
address/netmask. Get the prefix first. */
argv_prefix = 0;
tmp = strdup(argv[i]);
str = strchr(argv[i], '/');
if (NULL == str) {
orte_show_help("help-mpi-btl-tcp.txt", "invalid if_inexclude",
true, name, orte_process_info.nodename,
tmp, "Invalid specification (missing \"/\")");
free(argv[i]);
free(tmp);
continue;
}
*str = '\0';
argv_prefix = atoi(str + 1);
/* Now convert the IPv4 address */
((struct sockaddr*) &argv_inaddr)->sa_family = AF_INET;
ret = inet_pton(AF_INET, argv[i],
&((struct sockaddr_in*) &argv_inaddr)->sin_addr);
free(argv[i]);
if (1 != ret) {
orte_show_help("help-mpi-btl-tcp.txt", "invalid if_inexclude",
true, name, orte_process_info.nodename, tmp,
"Invalid specification (inet_pton() failed)");
free(tmp);
continue;
}
opal_output_verbose(20, mca_btl_base_output,
"btl: tcp: Searching for %s address+prefix: %s / %u",
name,
opal_net_get_hostname((struct sockaddr*) &argv_inaddr),
argv_prefix);
/* Go through all interfaces and see if we can find a match */
for (if_index = opal_ifbegin(); if_index >= 0;
if_index = opal_ifnext(if_index)) {
opal_ifindextoaddr(if_index,
(struct sockaddr*) &if_inaddr,
sizeof(if_inaddr));
if (opal_net_samenetwork((struct sockaddr*) &argv_inaddr,
(struct sockaddr*) &if_inaddr,
argv_prefix)) {
break;
}
}
/* If we didn't find a match, keep trying */
if (if_index < 0) {
orte_show_help("help-mpi-btl-tcp.txt", "invalid if_inexclude",
true, name, orte_process_info.nodename, tmp,
"Did not find interface matching this subnet");
free(tmp);
continue;
}
/* We found a match; get the name and replace it in the
argv */
opal_ifindextoname(if_index, if_name, sizeof(if_name));
opal_output_verbose(20, mca_btl_base_output,
"btl: tcp: Found match: %s (%s)",
opal_net_get_hostname((struct sockaddr*) &if_inaddr),
if_name);
argv[save++] = strdup(if_name);
free(tmp);
}
/* The list may have been compressed if there were invalid
entries, so ensure we end it with a NULL entry */
argv[save] = NULL;
free(*orig_str);
*orig_str = opal_argv_join(argv, ',');
return argv;
}
/*
* Create a TCP BTL instance for either:
* (1) all interfaces specified by the user
* (2) all available interfaces
* (3) all available interfaces except for those excluded by the user
*/
static int mca_btl_tcp_component_create_instances(void)
{
const int if_count = opal_ifcount();
int if_index;
int kif_count = 0;
int *kindexes = NULL; /* this array is way too large, but never too small */
char **include;
char **exclude;
char **argv;
int ret = OMPI_SUCCESS;
if(if_count <= 0) {
return OMPI_ERROR;
}
kindexes = (int *) malloc(sizeof(int) * if_count);
if (NULL == kindexes) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
/* calculate the number of kernel indexes (number of physical NICs) */
{
int j;
/* initialize array to 0. Assumption: 0 isn't a valid kernel index */
memset (kindexes, 0, sizeof(int) * if_count);
/* assign the corresponding kernel indexes for all opal_list indexes
* (loop over all addresses)
*/
for(if_index = opal_ifbegin(); if_index >= 0; if_index = opal_ifnext(if_index)){
int index = opal_ifindextokindex (if_index);
if (index > 0) {
bool want_this_if = true;
/* Have we seen this if already? */
for (j = 0; want_this_if && (j < kif_count); j++) {
if (kindexes[j] == index) {
want_this_if = false;
}
}
/* If we have an if_seq list, see if this is the one
interface that we're supposed to have */
if (NULL != mca_btl_tcp_component.tcp_if_seq) {
char name[256];
opal_ifindextoname(if_index, name, sizeof(name));
if (0 != strcmp(mca_btl_tcp_component.tcp_if_seq, name)) {
want_this_if = false;
}
}
if (want_this_if) {
kindexes[kif_count] = index;
kif_count++;
}
}
}
}
/* allocate memory for btls */
mca_btl_tcp_component.tcp_btls = (mca_btl_tcp_module_t**)malloc(mca_btl_tcp_component.tcp_num_links *
kif_count * sizeof(mca_btl_tcp_module_t*));
if(NULL == mca_btl_tcp_component.tcp_btls) {
ret = OMPI_ERR_OUT_OF_RESOURCE;
goto cleanup;
}
mca_btl_tcp_component.tcp_addr_count = if_count;
/* if the user specified an interface list - use these exclusively */
argv = include = split_and_resolve(&mca_btl_tcp_component.tcp_if_include,
"include");
while(argv && *argv) {
char* if_name = *argv;
int if_index = opal_ifnametokindex(if_name);
if(if_index < 0) {
BTL_ERROR(("invalid interface \"%s\"", if_name));
ret = OMPI_ERR_NOT_FOUND;
goto cleanup;
}
mca_btl_tcp_create(if_index, if_name);
argv++;
}
opal_argv_free(include);
/* If we made any modules, then the "include" list was non-empty,
and therefore we're done. */
if (mca_btl_tcp_component.tcp_num_btls > 0) {
ret = OMPI_SUCCESS;
goto cleanup;
}
/* if the interface list was not specified by the user, create
* a BTL for each interface that was not excluded.
*/
exclude = split_and_resolve(&mca_btl_tcp_component.tcp_if_exclude,
"exclude");
{
int i;
for(i = 0; i < kif_count; i++) {
/* IF_NAMESIZE is defined in opal/util/if.h */
char if_name[IF_NAMESIZE];
if_index = kindexes[i];
opal_ifkindextoname(if_index, if_name, sizeof(if_name));
/* check to see if this interface exists in the exclude list */
argv = exclude;
while(argv && *argv) {
if(strcmp(*argv,if_name) == 0)
break;
argv++;
}
/* if this interface was not found in the excluded list, create a BTL */
if(argv == 0 || *argv == 0) {
mca_btl_tcp_create(if_index, if_name);
}
}
}
opal_argv_free(exclude);
cleanup:
if (NULL != kindexes) {
free(kindexes);
}
return ret;
}
/*
* Create a listen socket and bind to all interfaces
*/
static int mca_btl_tcp_component_create_listen(uint16_t af_family)
{
int flags;
int sd;
struct sockaddr_storage inaddr;
opal_socklen_t addrlen;
/* create a listen socket for incoming connections */
sd = socket(af_family, SOCK_STREAM, 0);
if(sd < 0) {
if (EAFNOSUPPORT != opal_socket_errno) {
BTL_ERROR(("socket() failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
}
return OMPI_ERR_IN_ERRNO;
}
mca_btl_tcp_set_socket_options(sd);
#if OPAL_WANT_IPV6
{
struct addrinfo hints, *res = NULL;
int error;
memset (&hints, 0, sizeof(hints));
hints.ai_family = af_family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
if ((error = getaddrinfo(NULL, "0", &hints, &res))) {
opal_output (0,
"mca_btl_tcp_create_listen: unable to resolve. %s\n",
gai_strerror (error));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
memcpy (&inaddr, res->ai_addr, res->ai_addrlen);
addrlen = res->ai_addrlen;
freeaddrinfo (res);
#ifdef IPV6_V6ONLY
/* in case of AF_INET6, disable v4-mapped addresses */
if (AF_INET6 == af_family) {
int flg = 1;
if (setsockopt (sd, IPPROTO_IPV6, IPV6_V6ONLY,
(char *) &flg, sizeof (flg)) < 0) {
opal_output(0,
"mca_btl_tcp_create_listen: unable to disable v4-mapped addresses\n");
}
}
#endif /* IPV6_V6ONLY */
}
#else
((struct sockaddr_in*) &inaddr)->sin_family = AF_INET;
((struct sockaddr_in*) &inaddr)->sin_addr.s_addr = INADDR_ANY;
addrlen = sizeof(struct sockaddr_in);
#endif
{ /* Don't reuse ports */
int flg = 0;
if (setsockopt (sd, SOL_SOCKET, SO_REUSEADDR, (const char *)&flg, sizeof (flg)) < 0) {
BTL_ERROR(("mca_btl_tcp_create_listen: unable to unset the "
"SO_REUSEADDR option (%s:%d)\n",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
}
{
int index, range, port;
range = mca_btl_tcp_component.tcp_port_range;
port = mca_btl_tcp_component.tcp_port_min;
#if OPAL_WANT_IPV6
if (AF_INET6 == af_family) {
range = mca_btl_tcp_component.tcp6_port_range;
port = mca_btl_tcp_component.tcp6_port_min;
}
#endif /* OPAL_WANT_IPV6 */
for( index = 0; index < range; index++ ) {
#if OPAL_WANT_IPV6
((struct sockaddr_in6*) &inaddr)->sin6_port = htons(port + index);
#else
((struct sockaddr_in*) &inaddr)->sin_port = htons(port + index);
#endif /* OPAL_WANT_IPV6 */
if(bind(sd, (struct sockaddr*)&inaddr, addrlen) < 0) {
if( (EADDRINUSE == opal_socket_errno) || (EADDRNOTAVAIL == opal_socket_errno) ) {
continue;
}
BTL_ERROR(("bind() failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
goto socket_binded;
}
if( AF_INET == af_family ) {
BTL_ERROR(("bind() failed: no port available in the range [%d..%d]",
mca_btl_tcp_component.tcp_port_min,
mca_btl_tcp_component.tcp_port_min + range));
}
#if OPAL_WANT_IPV6
if (AF_INET6 == af_family) {
BTL_ERROR(("bind6() failed: no port available in the range [%d..%d]",
mca_btl_tcp_component.tcp6_port_min,
mca_btl_tcp_component.tcp6_port_min + range));
}
#endif /* OPAL_WANT_IPV6 */
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
socket_binded:
/* resolve system assignend port */
if(getsockname(sd, (struct sockaddr*)&inaddr, &addrlen) < 0) {
BTL_ERROR(("getsockname() failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
if (AF_INET == af_family) {
mca_btl_tcp_component.tcp_listen_port = ((struct sockaddr_in*) &inaddr)->sin_port;
mca_btl_tcp_component.tcp_listen_sd = sd;
}
#if OPAL_WANT_IPV6
if (AF_INET6 == af_family) {
mca_btl_tcp_component.tcp6_listen_port = ((struct sockaddr_in6*) &inaddr)->sin6_port;
mca_btl_tcp_component.tcp6_listen_sd = sd;
}
#endif
/* setup listen backlog to maximum allowed by kernel */
if(listen(sd, SOMAXCONN) < 0) {
BTL_ERROR(("listen() failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
/* set socket up to be non-blocking, otherwise accept could block */
if((flags = fcntl(sd, F_GETFL, 0)) < 0) {
BTL_ERROR(("fcntl(F_GETFL) failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
} else {
flags |= O_NONBLOCK;
if(fcntl(sd, F_SETFL, flags) < 0) {
BTL_ERROR(("fcntl(F_SETFL) failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return OMPI_ERROR;
}
}
/* register listen port */
if (AF_INET == af_family) {
opal_event_set( &mca_btl_tcp_component.tcp_recv_event,
mca_btl_tcp_component.tcp_listen_sd,
OPAL_EV_READ|OPAL_EV_PERSIST,
mca_btl_tcp_component_accept_handler,
0 );
opal_event_add(&mca_btl_tcp_component.tcp_recv_event, 0);
}
#if OPAL_WANT_IPV6
if (AF_INET6 == af_family) {
opal_event_set( &mca_btl_tcp_component.tcp6_recv_event,
mca_btl_tcp_component.tcp6_listen_sd,
OPAL_EV_READ|OPAL_EV_PERSIST,
mca_btl_tcp_component_accept_handler,
0 );
opal_event_add(&mca_btl_tcp_component.tcp6_recv_event, 0);
}
#endif
return OMPI_SUCCESS;
}
/*
* Register TCP module addressing information. The MCA framework
* will make this available to all peers.
*/
static int mca_btl_tcp_component_exchange(void)
{
int rc = 0, index;
size_t i = 0;
size_t size = mca_btl_tcp_component.tcp_addr_count *
mca_btl_tcp_component.tcp_num_links * sizeof(mca_btl_tcp_addr_t);
/* adi@2007-04-12:
*
* We'll need to explain things a bit here:
* 1. We normally have as many BTLs as physical NICs.
* 2. With num_links, we now have num_btl = num_links * #NICs
* 3. we might have more than one address per NIC
*/
size_t xfer_size = 0; /* real size to transfer (may differ from 'size') */
size_t current_addr = 0;
if(mca_btl_tcp_component.tcp_num_btls != 0) {
mca_btl_tcp_addr_t *addrs = (mca_btl_tcp_addr_t *)malloc(size);
memset(addrs, 0, size);
/* here we start populating our addresses */
for( i = 0; i < mca_btl_tcp_component.tcp_num_btls; i++ ) {
for (index = opal_ifbegin(); index >= 0;
index = opal_ifnext(index)) {
struct sockaddr_storage my_ss;
/* look if the address belongs to this (enabled) NIC.
* If not, go to next address
*/
if (opal_ifindextokindex (index) !=
mca_btl_tcp_component.tcp_btls[i]->tcp_ifkindex) {
continue;
}
if (OPAL_SUCCESS !=
opal_ifindextoaddr(index, (struct sockaddr*) &my_ss,
sizeof (my_ss))) {
opal_output (0,
"btl_tcp_component: problems getting address for index %i (kernel index %i)\n",
index, opal_ifindextokindex (index));
continue;
}
if ((AF_INET == my_ss.ss_family) &&
(4 != mca_btl_tcp_component.tcp_disable_family)) {
memcpy(&addrs[current_addr].addr_inet,
&((struct sockaddr_in*)&my_ss)->sin_addr,
sizeof(addrs[0].addr_inet));
addrs[current_addr].addr_port =
mca_btl_tcp_component.tcp_listen_port;
addrs[current_addr].addr_family = MCA_BTL_TCP_AF_INET;
xfer_size += sizeof (mca_btl_tcp_addr_t);
addrs[current_addr].addr_inuse = 0;
addrs[current_addr].addr_ifkindex =
opal_ifindextokindex (index);
current_addr++;
}
#if OPAL_WANT_IPV6
if ((AF_INET6 == my_ss.ss_family) &&
(6 != mca_btl_tcp_component.tcp_disable_family)) {
memcpy(&addrs[current_addr].addr_inet,
&((struct sockaddr_in6*)&my_ss)->sin6_addr,
sizeof(addrs[0].addr_inet));
addrs[current_addr].addr_port =
mca_btl_tcp_component.tcp6_listen_port;
addrs[current_addr].addr_family = MCA_BTL_TCP_AF_INET6;
xfer_size += sizeof (mca_btl_tcp_addr_t);
addrs[current_addr].addr_inuse = 0;
addrs[current_addr].addr_ifkindex =
opal_ifindextokindex (index);
current_addr++;
}
#endif
} /* end of for opal_ifbegin() */
} /* end of for tcp_num_btls */
rc = ompi_modex_send(&mca_btl_tcp_component.super.btl_version,
addrs, xfer_size);
free(addrs);
} /* end if */
return rc;
}
/*
* TCP module initialization:
* (1) read interface list from kernel and compare against module parameters
* then create a BTL instance for selected interfaces
* (2) setup TCP listen socket for incoming connection attempts
* (3) register BTL parameters with the MCA
*/
mca_btl_base_module_t** mca_btl_tcp_component_init(int *num_btl_modules,
bool enable_progress_threads,
bool enable_mpi_threads)
{
int ret = OMPI_SUCCESS;
mca_btl_base_module_t **btls;
*num_btl_modules = 0;
/* initialize free lists */
ompi_free_list_init_new( &mca_btl_tcp_component.tcp_frag_eager,
sizeof (mca_btl_tcp_frag_eager_t) +
mca_btl_tcp_module.super.btl_eager_limit,
opal_cache_line_size,
OBJ_CLASS (mca_btl_tcp_frag_eager_t),
0,opal_cache_line_size,
mca_btl_tcp_component.tcp_free_list_num,
mca_btl_tcp_component.tcp_free_list_max,
mca_btl_tcp_component.tcp_free_list_inc,
NULL );
ompi_free_list_init_new( &mca_btl_tcp_component.tcp_frag_max,
sizeof (mca_btl_tcp_frag_max_t) +
mca_btl_tcp_module.super.btl_max_send_size,
opal_cache_line_size,
OBJ_CLASS (mca_btl_tcp_frag_max_t),
0,opal_cache_line_size,
mca_btl_tcp_component.tcp_free_list_num,
mca_btl_tcp_component.tcp_free_list_max,
mca_btl_tcp_component.tcp_free_list_inc,
NULL );
ompi_free_list_init_new( &mca_btl_tcp_component.tcp_frag_user,
sizeof (mca_btl_tcp_frag_user_t),
opal_cache_line_size,
OBJ_CLASS (mca_btl_tcp_frag_user_t),
0,opal_cache_line_size,
mca_btl_tcp_component.tcp_free_list_num,
mca_btl_tcp_component.tcp_free_list_max,
mca_btl_tcp_component.tcp_free_list_inc,
NULL );
/* create a BTL TCP module for selected interfaces */
if(OMPI_SUCCESS != (ret = mca_btl_tcp_component_create_instances() )) {
return 0;
}
/* create a TCP listen socket for incoming connection attempts */
if(OMPI_SUCCESS != (ret = mca_btl_tcp_component_create_listen(AF_INET) )) {
return 0;
}
#if OPAL_WANT_IPV6
if((ret = mca_btl_tcp_component_create_listen(AF_INET6)) != OMPI_SUCCESS) {
if (!(OMPI_ERR_IN_ERRNO == ret && EAFNOSUPPORT == opal_socket_errno)) {
opal_output (0, "mca_btl_tcp_component: IPv6 listening socket failed\n");
return 0;
}
}
#endif
/* publish TCP parameters with the MCA framework */
if(OMPI_SUCCESS != (ret = mca_btl_tcp_component_exchange() )) {
return 0;
}
btls = (mca_btl_base_module_t **)malloc(mca_btl_tcp_component.tcp_num_btls *
sizeof(mca_btl_base_module_t*));
if(NULL == btls) {
return NULL;
}
memcpy(btls, mca_btl_tcp_component.tcp_btls, mca_btl_tcp_component.tcp_num_btls*sizeof(mca_btl_tcp_module_t*));
*num_btl_modules = mca_btl_tcp_component.tcp_num_btls;
return btls;
}
/*
* TCP module control
*/
int mca_btl_tcp_component_control(int param, void* value, size_t size)
{
return OMPI_SUCCESS;
}
/**
* Called by the event engine when the listening socket has
* a connection event. Accept the incoming connection request
* and queue them for completion of the connection handshake.
*/
static void mca_btl_tcp_component_accept_handler( int incoming_sd,
short ignored,
void* unused )
{
while(true) {
#if OPAL_WANT_IPV6
struct sockaddr_in6 addr;
#else
struct sockaddr_in addr;
#endif
opal_socklen_t addrlen = sizeof(addr);
mca_btl_tcp_event_t *event;
int sd = accept(incoming_sd, (struct sockaddr*)&addr, &addrlen);
if(sd < 0) {
if(opal_socket_errno == EINTR)
continue;
if(opal_socket_errno != EAGAIN && opal_socket_errno != EWOULDBLOCK)
BTL_ERROR(("accept() failed: %s (%d).",
strerror(opal_socket_errno), opal_socket_errno));
return;
}
mca_btl_tcp_set_socket_options(sd);
/* wait for receipt of peers process identifier to complete this connection */
event = OBJ_NEW(mca_btl_tcp_event_t);
opal_event_set(&event->event, sd, OPAL_EV_READ, mca_btl_tcp_component_recv_handler, event);
opal_event_add(&event->event, 0);
}
}
/**
* Event callback when there is data available on the registered
* socket to recv. This callback is triggered only once per lifetime
* for any socket, in the beginning when we setup the handshake
* protocol.
*/
static void mca_btl_tcp_component_recv_handler(int sd, short flags, void* user)
{
orte_process_name_t guid;
struct sockaddr_storage addr;
int retval;
mca_btl_tcp_proc_t* btl_proc;
opal_socklen_t addr_len = sizeof(addr);
mca_btl_tcp_event_t *event = (mca_btl_tcp_event_t *)user;
OBJ_RELEASE(event);
/* recv the process identifier */
retval = recv(sd, (char *)&guid, sizeof(guid), 0);
if(retval != sizeof(guid)) {
CLOSE_THE_SOCKET(sd);
return;
}
ORTE_PROCESS_NAME_NTOH(guid);
/* now set socket up to be non-blocking */
if((flags = fcntl(sd, F_GETFL, 0)) < 0) {
BTL_ERROR(("fcntl(F_GETFL) failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
} else {
flags |= O_NONBLOCK;
if(fcntl(sd, F_SETFL, flags) < 0) {
BTL_ERROR(("fcntl(F_SETFL) failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
}
}
/* lookup the corresponding process */
btl_proc = mca_btl_tcp_proc_lookup(&guid);
if(NULL == btl_proc) {
CLOSE_THE_SOCKET(sd);
return;
}
/* lookup peer address */
if(getpeername(sd, (struct sockaddr*)&addr, &addr_len) != 0) {
BTL_ERROR(("getpeername() failed: %s (%d)",
strerror(opal_socket_errno), opal_socket_errno));
CLOSE_THE_SOCKET(sd);
return;
}
/* are there any existing peer instances will to accept this connection */
if(mca_btl_tcp_proc_accept(btl_proc, (struct sockaddr*)&addr, sd) == false) {
CLOSE_THE_SOCKET(sd);
return;
}
}
|