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/*
* Copyright (c) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <string.h>
#include "opal/class/opal_bitmap.h"
#include "ompi/mca/btl/btl.h"
#include "btl_sctp.h"
#include "btl_sctp_frag.h"
#include "btl_sctp_proc.h"
#include "btl_sctp_endpoint.h"
#include "opal/datatype/opal_convertor.h"
#include "ompi/datatype/ompi_datatype.h"
#include "ompi/mca/mpool/base/base.h"
#include "ompi/mca/mpool/mpool.h"
#include "ompi/proc/proc.h"
mca_btl_sctp_module_t mca_btl_sctp_module = {
{
&mca_btl_sctp_component.super,
0, /* max size of first fragment */
0, /* min send fragment size */
0, /* max send fragment size */
0, /* btl_rdma_pipeline_send_length */
0, /* btl_rdma_pipeline_frag_size */
0, /* btl_min_rdma_pipeline_size */
0, /* exclusivity */
0, /* latency */
0, /* bandwidth */
0, /* flags */
mca_btl_sctp_add_procs,
mca_btl_sctp_del_procs,
NULL,
mca_btl_sctp_finalize,
mca_btl_sctp_alloc,
mca_btl_sctp_free,
mca_btl_sctp_prepare_src,
mca_btl_sctp_prepare_dst,
mca_btl_sctp_send,
NULL, /* send immediate */
mca_btl_sctp_put,
NULL, /* get */
mca_btl_base_dump,
NULL, /* mpool */
NULL /* register error */
}
};
/**
*
*/
int mca_btl_sctp_add_procs(
struct mca_btl_base_module_t* btl,
size_t nprocs,
struct ompi_proc_t **ompi_procs,
struct mca_btl_base_endpoint_t** peers,
opal_bitmap_t* reachable)
{
mca_btl_sctp_module_t* sctp_btl = (mca_btl_sctp_module_t*)btl;
ompi_proc_t* my_proc; /* pointer to caller's proc structure */
int i, rc;
/* get pointer to my proc structure */
my_proc = ompi_proc_local();
if( NULL == my_proc ) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
for(i = 0; i < (int) nprocs; i++) {
struct ompi_proc_t* ompi_proc = ompi_procs[i];
mca_btl_sctp_proc_t* sctp_proc;
mca_btl_base_endpoint_t* sctp_endpoint;
/* Do not create loopback SCTP connections */
if( my_proc == ompi_proc ) {
continue;
}
if(NULL == (sctp_proc = mca_btl_sctp_proc_create(ompi_proc))) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
/*
* Check to make sure that the peer has at least as many interface
* addresses exported as we are trying to use. If not, then
* don't bind this BTL instance to the proc.
*/
OPAL_THREAD_LOCK(&sctp_proc->proc_lock);
/* The btl_proc datastructure is shared by all SCTP BTL
* instances that are trying to reach this destination.
* Cache the peer instance on the btl_proc.
*/
sctp_endpoint = OBJ_NEW(mca_btl_sctp_endpoint_t);
if(NULL == sctp_endpoint) {
OPAL_THREAD_UNLOCK(&sctp_proc->proc_lock);
return OMPI_ERR_OUT_OF_RESOURCE;
}
sctp_endpoint->endpoint_btl = sctp_btl;
rc = mca_btl_sctp_proc_insert(sctp_proc, sctp_endpoint);
if(rc != OMPI_SUCCESS) {
OBJ_RELEASE(sctp_endpoint);
OPAL_THREAD_UNLOCK(&sctp_proc->proc_lock);
continue;
}
opal_bitmap_set_bit(reachable, i);
OPAL_THREAD_UNLOCK(&sctp_proc->proc_lock);
peers[i] = sctp_endpoint;
opal_list_append(&sctp_btl->sctp_endpoints, (opal_list_item_t*)sctp_endpoint);
/* we increase the count of MPI users of the event library
once per peer, so that we are used until we aren't
connected to a peer */
opal_progress_event_users_increment();
}
return OMPI_SUCCESS;
}
int mca_btl_sctp_del_procs(struct mca_btl_base_module_t* btl,
size_t nprocs,
struct ompi_proc_t **procs,
struct mca_btl_base_endpoint_t ** endpoints)
{
mca_btl_sctp_module_t* sctp_btl = (mca_btl_sctp_module_t*)btl;
size_t i;
for(i=0; i<nprocs; i++) {
mca_btl_sctp_endpoint_t* sctp_endpoint = endpoints[i];
if(sctp_endpoint->endpoint_proc != mca_btl_sctp_proc_local()) {
opal_list_remove_item(&sctp_btl->sctp_endpoints, (opal_list_item_t*)sctp_endpoint);
OBJ_RELEASE(sctp_endpoint);
}
opal_progress_event_users_decrement();
}
return OMPI_SUCCESS;
}
/**
* Allocate a segment.
*
* @param btl (IN) BTL module
* @param size (IN) Request segment size.
*/
mca_btl_base_descriptor_t* mca_btl_sctp_alloc(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
uint8_t order,
size_t size,
uint32_t flags)
{
mca_btl_sctp_frag_t* frag = NULL;
int rc;
if(size <= btl->btl_eager_limit) {
MCA_BTL_SCTP_FRAG_ALLOC_EAGER(frag, rc);
} else if (size <= btl->btl_max_send_size) {
MCA_BTL_SCTP_FRAG_ALLOC_MAX(frag, rc);
}
if( NULL == frag ) {
return NULL;
}
frag->segments[0].seg_len = size;
frag->segments[0].seg_addr.pval = frag+1;
frag->base.des_src = frag->segments;
frag->base.des_src_cnt = 1;
frag->base.des_dst = NULL;
frag->base.des_dst_cnt = 0;
frag->base.des_flags = flags;
frag->base.order = MCA_BTL_NO_ORDER;
frag->btl = (mca_btl_sctp_module_t*)btl;
return (mca_btl_base_descriptor_t*)frag;
}
/**
* Return a segment
*/
int mca_btl_sctp_free(
struct mca_btl_base_module_t* btl,
mca_btl_base_descriptor_t* des)
{
mca_btl_sctp_frag_t* frag = (mca_btl_sctp_frag_t*)des;
MCA_BTL_SCTP_FRAG_RETURN(frag);
return OMPI_SUCCESS;
}
/**
* Pack data and return a descriptor that can be
* used for send/put.
*
* @param btl (IN) BTL module
* @param peer (IN) BTL peer addressing
*/
mca_btl_base_descriptor_t* mca_btl_sctp_prepare_src(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_mpool_base_registration_t* registration,
struct opal_convertor_t* convertor,
uint8_t order,
size_t reserve,
size_t* size,
uint32_t flags)
{
mca_btl_sctp_frag_t* frag;
struct iovec iov;
uint32_t iov_count = 1;
size_t max_data = *size;
int rc;
/*
* if we aren't pinning the data and the requested size is less
* than the eager limit pack into a fragment from the eager pool
*/
if (max_data+reserve <= btl->btl_eager_limit) {
MCA_BTL_SCTP_FRAG_ALLOC_EAGER(frag, rc);
}
/*
* otherwise pack as much data as we can into a fragment
* that is the max send size.
*/
else {
MCA_BTL_SCTP_FRAG_ALLOC_MAX(frag, rc);
}
if(NULL == frag) {
return NULL;
}
if(max_data == 0) {
frag->segments[0].seg_addr.pval = (frag + 1);
frag->segments[0].seg_len = reserve;
frag->base.des_src_cnt = 1;
} else if(opal_convertor_need_buffers(convertor)) {
if (max_data + reserve > frag->size) {
max_data = frag->size - reserve;
}
iov.iov_len = max_data;
iov.iov_base = (IOVBASE_TYPE*)(((unsigned char*)(frag+1)) + reserve);
rc = opal_convertor_pack(convertor, &iov, &iov_count, &max_data );
if( rc < 0 ) {
mca_btl_sctp_free(btl, &frag->base);
return NULL;
}
frag->segments[0].seg_addr.pval = (frag + 1);
frag->segments[0].seg_len = max_data + reserve;
frag->base.des_src_cnt = 1;
} else {
iov.iov_len = max_data;
iov.iov_base = NULL;
rc = opal_convertor_pack(convertor, &iov, &iov_count, &max_data );
if( rc < 0 ) {
mca_btl_sctp_free(btl, &frag->base);
return NULL;
}
frag->segments[0].seg_addr.pval = frag+1;
frag->segments[0].seg_len = reserve;
frag->segments[1].seg_addr.pval = iov.iov_base;
frag->segments[1].seg_len = max_data;
frag->base.des_src_cnt = 2;
}
frag->base.des_src = frag->segments;
frag->base.des_dst = NULL;
frag->base.des_dst_cnt = 0;
frag->base.des_flags = flags;
*size = max_data;
return &frag->base;
}
/**
* Prepare a descriptor for send/rdma using the supplied
* convertor. If the convertor references data that is contigous,
* the descriptor may simply point to the user buffer. Otherwise,
* this routine is responsible for allocating buffer space and
* packing if required.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL peer addressing
* @param convertor (IN) Data type convertor
* @param reserve (IN) Additional bytes requested by upper layer to precede user data
* @param size (IN/OUT) Number of bytes to prepare (IN), number of bytes actually prepared (OUT)
*/
mca_btl_base_descriptor_t* mca_btl_sctp_prepare_dst(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_mpool_base_registration_t* registration,
struct opal_convertor_t* convertor,
uint8_t order,
size_t reserve,
size_t* size,
uint32_t flags)
{
mca_btl_sctp_frag_t* frag;
ptrdiff_t lb;
int rc;
MCA_BTL_SCTP_FRAG_ALLOC_USER(frag, rc);
if(NULL == frag) {
return NULL;
}
ompi_datatype_type_lb((ompi_datatype_t*)convertor->pDesc, &lb);
frag->segments->seg_len = *size;
frag->segments->seg_addr.pval = convertor->pBaseBuf + lb + convertor->bConverted;
frag->base.des_src = NULL;
frag->base.des_src_cnt = 0;
frag->base.des_dst = frag->segments;
frag->base.des_dst_cnt = 1;
frag->base.des_flags = flags;
return &frag->base;
}
/**
* Initiate an asynchronous send.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transfered
* @param tag (IN) The tag value used to notify the peer.
*/
int mca_btl_sctp_send(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_btl_base_descriptor_t* descriptor,
mca_btl_base_tag_t tag)
{
mca_btl_sctp_module_t* sctp_btl = (mca_btl_sctp_module_t*) btl;
mca_btl_sctp_frag_t* frag = (mca_btl_sctp_frag_t*)descriptor;
size_t i;
frag->btl = sctp_btl;
frag->endpoint = endpoint;
frag->rc = 0;
frag->iov_idx = 0;
frag->iov_cnt = 1;
frag->iov_ptr = frag->iov;
frag->iov[0].iov_base = (IOVBASE_TYPE*)&frag->hdr;
frag->iov[0].iov_len = sizeof(frag->hdr);
frag->hdr.size = 0;
for(i=0; i<frag->base.des_src_cnt; i++) {
frag->hdr.size += frag->segments[i].seg_len;
frag->iov[i+1].iov_len = frag->segments[i].seg_len;
frag->iov[i+1].iov_base = (IOVBASE_TYPE*)frag->segments[i].seg_addr.pval;
frag->iov_cnt++;
}
frag->hdr.base.tag = tag;
frag->hdr.type = MCA_BTL_SCTP_HDR_TYPE_SEND;
frag->hdr.count = 0;
if (endpoint->endpoint_nbo) {
MCA_BTL_SCTP_HDR_HTON(frag->hdr);
}
return mca_btl_sctp_endpoint_send(endpoint,frag);
}
/**
* Initiate an asynchronous put.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*/
int mca_btl_sctp_put(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* descriptor)
{
mca_btl_sctp_module_t* sctp_btl = (mca_btl_sctp_module_t*) btl;
mca_btl_sctp_frag_t* frag = (mca_btl_sctp_frag_t*)descriptor;
size_t i;
frag->btl = sctp_btl;
frag->endpoint = endpoint;
frag->rc = 0;
frag->iov_idx = 0;
frag->hdr.size = 0;
frag->iov_cnt = 2;
frag->iov_ptr = frag->iov;
frag->iov[0].iov_base = (IOVBASE_TYPE*)&frag->hdr;
frag->iov[0].iov_len = sizeof(frag->hdr);
frag->iov[1].iov_base = (IOVBASE_TYPE*)frag->base.des_dst;
frag->iov[1].iov_len = frag->base.des_dst_cnt * sizeof(mca_btl_base_segment_t);
for(i=0; i<frag->base.des_src_cnt; i++) {
frag->hdr.size += frag->segments[i].seg_len;
frag->iov[i+2].iov_len = frag->segments[i].seg_len;
frag->iov[i+2].iov_base = (IOVBASE_TYPE*)frag->segments[i].seg_addr.pval;
frag->iov_cnt++;
}
frag->hdr.base.tag = MCA_BTL_TAG_BTL;
frag->hdr.type = MCA_BTL_SCTP_HDR_TYPE_PUT;
frag->hdr.count = frag->base.des_dst_cnt;
if (endpoint->endpoint_nbo) {
MCA_BTL_SCTP_HDR_HTON(frag->hdr);
}
return mca_btl_sctp_endpoint_send(endpoint,frag);
}
/**
* Initiate an asynchronous get.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*
*/
int mca_btl_sctp_get(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* descriptor)
{
mca_btl_sctp_module_t* sctp_btl = (mca_btl_sctp_module_t*) btl;
mca_btl_sctp_frag_t* frag = (mca_btl_sctp_frag_t*)descriptor;
frag->btl = sctp_btl;
frag->endpoint = endpoint;
frag->rc = 0;
frag->iov_idx = 0;
frag->hdr.size = 0;
frag->iov_cnt = 2;
frag->iov_ptr = frag->iov;
frag->iov[0].iov_base = (IOVBASE_TYPE*)&frag->hdr;
frag->iov[0].iov_len = sizeof(frag->hdr);
frag->iov[1].iov_base = (IOVBASE_TYPE*)frag->base.des_src;
frag->iov[1].iov_len = frag->base.des_src_cnt * sizeof(mca_btl_base_segment_t);
frag->hdr.base.tag = MCA_BTL_TAG_BTL;
frag->hdr.type = MCA_BTL_SCTP_HDR_TYPE_GET;
frag->hdr.count = frag->base.des_src_cnt;
if (endpoint->endpoint_nbo) MCA_BTL_SCTP_HDR_HTON(frag->hdr);
return mca_btl_sctp_endpoint_send(endpoint,frag);
}
/*
* Cleanup/release module resources.
*/
int mca_btl_sctp_finalize(struct mca_btl_base_module_t* btl)
{
mca_btl_sctp_module_t* sctp_btl = (mca_btl_sctp_module_t*) btl;
opal_list_item_t* item;
for( item = opal_list_remove_first(&sctp_btl->sctp_endpoints);
item != NULL;
item = opal_list_remove_first(&sctp_btl->sctp_endpoints)) {
mca_btl_sctp_endpoint_t *endpoint = (mca_btl_sctp_endpoint_t*)item;
OBJ_RELEASE(endpoint);
opal_progress_event_users_decrement();
}
free(sctp_btl);
return OMPI_SUCCESS;
}
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