1322 строки
53 KiB
C
1322 строки
53 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) 2004-2008 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 (c) 2009 Sun Microsystems, Inc 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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* In windows, many of the socket functions return an EWOULDBLOCK
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* instead of \ things like EAGAIN, EINPROGRESS, etc. It has been
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* verified that this will \ not conflict with other error codes that
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* are returned by these functions \ under UNIX/Linux environments
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*/
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#include "ompi_config.h"
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "opal/opal_socket_errno.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETINET_TCP_H
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#include <netinet/tcp.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif /* HAVE_SYS_TIME_H */
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif /* HAVE_TIME_H */
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#include <netinet/sctp.h>
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#include "ompi/types.h"
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#include "ompi/mca/btl/base/btl_base_error.h"
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#include "orte/util/name_fns.h"
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#include "btl_sctp.h"
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#include "btl_sctp_endpoint.h"
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#include "btl_sctp_proc.h"
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#include "btl_sctp_frag.h"
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#include "btl_sctp_addr.h"
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#include "btl_sctp_utils.h"
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#include "btl_sctp_recv_handler.h"
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/* Pre-allocate pool of endpoints. These are copies of endpoints
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* since opal_list only allows an item to be a member of one list
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* at a time. We have a freelist of pre-allocated endpoints and
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* also a list of endpoints that currently want to send. Our send
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* handler walks this list each time it's invoked. If nobody currently
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* wants to send (i.e., endpoint_associated_with_send is NULL), the
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* POLLOUT for this socket is turned off. If there are no more free
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* slots allocated, the pool expands.
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*/
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#define INITIAL_NUM_FREE_POOL_SLOTS 10
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static opal_list_t sending_endpoints;
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static opal_list_t sending_endpoints_freelist;
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mca_btl_base_endpoint_t *endpoint_associated_with_send;
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OBJ_CLASS_INSTANCE(
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our_sctp_endpoint,
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opal_list_item_t,
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NULL,
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NULL);
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static int have_initiated_sending_endpoints_list=0;
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struct sending_endpoint_chunk {
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our_sctp_endpoint *to_free;
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struct sending_endpoint_chunk *next;
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};
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typedef struct sending_endpoint_chunk sending_endpoint_chunk;
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static sending_endpoint_chunk endpoint_chunks_to_free;
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static sending_endpoint_chunk * endpoint_chunks_to_free_tail;
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static int sending_endpoints_walk_count;
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/*
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* Initialize state of the endpoint instance.
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*
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*/
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static void mca_btl_sctp_endpoint_construct(mca_btl_sctp_endpoint_t* endpoint)
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{
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endpoint->endpoint_btl = NULL;
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endpoint->endpoint_proc = NULL;
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endpoint->endpoint_addr = NULL;
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endpoint->endpoint_sd = -1;
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endpoint->endpoint_send_frag = 0;
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endpoint->endpoint_recv_frag = 0;
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endpoint->endpoint_send_event.ev_flags = 0;
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endpoint->endpoint_recv_event.ev_flags = 0;
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endpoint->endpoint_state = MCA_BTL_SCTP_CLOSED;
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endpoint->endpoint_retries = 0;
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endpoint->endpoint_nbo = false;
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#if MCA_BTL_SCTP_ENDPOINT_CACHE
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endpoint->endpoint_cache = NULL;
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endpoint->endpoint_cache_pos = NULL;
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endpoint->endpoint_cache_length = 0;
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#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
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endpoint->endpoint_has_initialized = 0;
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endpoint->endpoint_in_list = 0;
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OBJ_CONSTRUCT(&endpoint->endpoint_frags, opal_list_t);
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OBJ_CONSTRUCT(&endpoint->endpoint_send_lock, opal_mutex_t);
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OBJ_CONSTRUCT(&endpoint->endpoint_recv_lock, opal_mutex_t);
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if(0 == have_initiated_sending_endpoints_list) {
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int i;
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our_sctp_endpoint *free_entries;
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have_initiated_sending_endpoints_list++;
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OBJ_CONSTRUCT(&sending_endpoints, opal_list_t);
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OBJ_CONSTRUCT(&sending_endpoints_freelist, opal_list_t);
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endpoint_associated_with_send = NULL;
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if(NULL == (free_entries = (our_sctp_endpoint *) malloc(sizeof(our_sctp_endpoint)
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* INITIAL_NUM_FREE_POOL_SLOTS)))
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{
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BTL_ERROR(("cannot allocate free poll entries."));
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return;
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}
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memset(free_entries, 0, sizeof(our_sctp_endpoint) * INITIAL_NUM_FREE_POOL_SLOTS);
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for(i=0; i < INITIAL_NUM_FREE_POOL_SLOTS; i++) {
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opal_list_append(&sending_endpoints_freelist, (opal_list_item_t *) &free_entries[i]);
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}
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endpoint_chunks_to_free.to_free = free_entries;
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endpoint_chunks_to_free.next = NULL;
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endpoint_chunks_to_free_tail = &endpoint_chunks_to_free;
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}
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}
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/*
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* Destroy a endpoint
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*
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*/
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static void mca_btl_sctp_endpoint_destruct(mca_btl_sctp_endpoint_t* endpoint)
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{
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mca_btl_sctp_proc_remove(endpoint->endpoint_proc, endpoint);
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mca_btl_sctp_endpoint_close(endpoint);
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OBJ_DESTRUCT(&endpoint->endpoint_frags);
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OBJ_DESTRUCT(&endpoint->endpoint_send_lock);
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OBJ_DESTRUCT(&endpoint->endpoint_recv_lock);
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if(have_initiated_sending_endpoints_list) {
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sending_endpoint_chunk *chunkp = &endpoint_chunks_to_free, *nextp;
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have_initiated_sending_endpoints_list--;
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OBJ_DESTRUCT(&sending_endpoints);
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OBJ_DESTRUCT(&sending_endpoints_freelist);
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/* free up memory used in pool of sending_endpoint items */
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/* only to_free malloc'd in static endpoint_chunks_to_free */
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free(endpoint_chunks_to_free.to_free);
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nextp = chunkp->next;
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while(nextp) /* ...but all other chunks were dynamically allocated */
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{
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chunkp = nextp;
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nextp = chunkp->next;
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free(chunkp->to_free);
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free(chunkp);
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}
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}
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}
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OBJ_CLASS_INSTANCE(
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mca_btl_sctp_endpoint_t,
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opal_list_item_t,
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mca_btl_sctp_endpoint_construct,
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mca_btl_sctp_endpoint_destruct);
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static void mca_btl_sctp_endpoint_construct(mca_btl_base_endpoint_t* btl_endpoint);
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static void mca_btl_sctp_endpoint_destruct(mca_btl_base_endpoint_t* btl_endpoint);
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static int mca_btl_sctp_endpoint_start_connect(mca_btl_base_endpoint_t*);
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static void mca_btl_sctp_endpoint_connected(mca_btl_base_endpoint_t*);
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static void mca_btl_sctp_endpoint_recv_handler(int sd, short flags, void* user);
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static void mca_btl_sctp_endpoint_send_handler(int sd, short flags, void* user);
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/*
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* Diagnostics: change this to "1" to enable the function
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* mca_btl_sctp_endpoint_dump(), below
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*/
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#define WANT_PEER_DUMP 0
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/*
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* diagnostics
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*/
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#if WANT_PEER_DUMP
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static void mca_btl_sctp_endpoint_dump(mca_btl_base_endpoint_t* btl_endpoint, const char* msg)
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{
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char src[64];
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char dst[64];
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int sndbuf,rcvbuf,nodelay,flags;
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struct sockaddr_in inaddr;
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opal_socklen_t obtlen;
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opal_socklen_t addrlen = sizeof(struct sockaddr_in);
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getsockname(btl_endpoint->endpoint_sd, (struct sockaddr*)&inaddr, &addrlen);
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sprintf(src, "%s", inet_ntoa(inaddr.sin_addr));
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getpeername(btl_endpoint->endpoint_sd, (struct sockaddr*)&inaddr, &addrlen);
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sprintf(dst, "%s", inet_ntoa(inaddr.sin_addr));
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if((flags = fcntl(btl_endpoint->endpoint_sd, F_GETFL, 0)) < 0) {
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BTL_ERROR(("fcntl(F_GETFL) failed with errno=%d", opal_socket_errno));
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}
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#if defined(SO_SNDBUF)
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obtlen = sizeof(sndbuf);
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if(getsockopt(btl_endpoint->endpoint_sd, SOL_SOCKET, SO_SNDBUF, (char *)&sndbuf, &obtlen) < 0) {
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BTL_ERROR(("SO_SNDBUF option: errno %d", opal_socket_errno));
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}
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#else
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sndbuf = -1;
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#endif
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#if defined(SO_RCVBUF)
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obtlen = sizeof(rcvbuf);
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if(getsockopt(btl_endpoint->endpoint_sd, SOL_SOCKET, SO_RCVBUF, (char *)&rcvbuf, &obtlen) < 0) {
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BTL_ERROR(("SO_RCVBUF option: errno %d", opal_socket_errno));
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}
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#else
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rcvbuf = -1;
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#endif
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#if defined(SCTP_NODELAY)
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obtlen = sizeof(nodelay);
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if(getsockopt(btl_endpoint->endpoint_sd, IPPROTO_SCTP, SCTP_NODELAY, (char *)&nodelay, &obtlen) < 0) {
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BTL_ERROR(("SCTP_NODELAY option: errno %d", opal_socket_errno));
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}
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#else
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nodelay = 0;
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#endif
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BTL_DEBUG(("%s: %s - %s nodelay %d sndbuf %d rcvbuf %d flags %08x",
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msg, src, dst, nodelay, sndbuf, rcvbuf, flags));
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}
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#endif
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/*
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* Initialize events to be used by the endpoint instance for TCP select/poll callbacks.
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*/
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static inline void mca_btl_sctp_endpoint_event_init(mca_btl_base_endpoint_t* btl_endpoint, int sd)
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{
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if(mca_btl_sctp_component.sctp_if_11) {
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/* 1 to 1*/
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#if MCA_BTL_SCTP_ENDPOINT_CACHE
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btl_endpoint->endpoint_cache = (char*)malloc(mca_btl_sctp_component.sctp_endpoint_cache);
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btl_endpoint->endpoint_cache_pos = btl_endpoint->endpoint_cache;
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#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
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opal_event_set( &btl_endpoint->endpoint_recv_event,
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btl_endpoint->endpoint_sd,
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OPAL_EV_READ|OPAL_EV_PERSIST,
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mca_btl_sctp_endpoint_recv_handler,
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btl_endpoint );
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opal_event_set( &btl_endpoint->endpoint_send_event,
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btl_endpoint->endpoint_sd,
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OPAL_EV_WRITE|OPAL_EV_PERSIST,
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mca_btl_sctp_endpoint_send_handler,
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btl_endpoint);
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}
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else {
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/* 1 to many */
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if(0 == btl_endpoint->endpoint_has_initialized) {
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btl_endpoint->endpoint_has_initialized++;
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btl_endpoint->endpoint_sd = mca_btl_sctp_component.sctp_listen_sd;
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#if MCA_BTL_SCTP_ENDPOINT_CACHE
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btl_endpoint->endpoint_cache = (char*)malloc(mca_btl_sctp_component.sctp_endpoint_cache);
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btl_endpoint->endpoint_cache_pos = btl_endpoint->endpoint_cache;
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#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
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opal_event_set( &btl_endpoint->endpoint_recv_event,
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btl_endpoint->endpoint_sd,
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OPAL_EV_READ|OPAL_EV_PERSIST,
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mca_btl_sctp_recv_handler,
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btl_endpoint );
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opal_event_set( &btl_endpoint->endpoint_send_event,
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btl_endpoint->endpoint_sd,
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OPAL_EV_WRITE|OPAL_EV_PERSIST,
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mca_btl_sctp_endpoint_send_handler,
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btl_endpoint);
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}
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}
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}
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/*
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* Attempt to send a fragment using a given endpoint. If the endpoint is not connected,
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* queue the fragment and start the connection as required.
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*
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* Here we have our first notion of endpoint connection state. Instead of
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* assigning state, it may be benficial to maintain another table of recvrs that
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* we have sent to in the past. If that recvr is NOT found in the table, then it
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* is a new proc and we have to send them our GUID before we send anything else.
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*/
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int mca_btl_sctp_endpoint_send(mca_btl_base_endpoint_t* btl_endpoint, mca_btl_sctp_frag_t* frag)
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{
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if(mca_btl_sctp_component.sctp_if_11) {
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/* 1 to 1 */
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int rc = OMPI_SUCCESS;
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OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
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switch(btl_endpoint->endpoint_state) {
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case MCA_BTL_SCTP_CONNECTING:
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case MCA_BTL_SCTP_CONNECT_ACK:
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case MCA_BTL_SCTP_CLOSED:
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opal_list_append(&btl_endpoint->endpoint_frags, (opal_list_item_t*)frag);
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if(btl_endpoint->endpoint_state == MCA_BTL_SCTP_CLOSED) {
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rc = mca_btl_sctp_endpoint_start_connect(btl_endpoint);
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}
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break;
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case MCA_BTL_SCTP_FAILED:
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rc = OMPI_ERR_UNREACH;
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break;
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case MCA_BTL_SCTP_CONNECTED:
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if (btl_endpoint->endpoint_send_frag == NULL) {
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if(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY &&
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mca_btl_sctp_frag_send(frag, btl_endpoint->endpoint_sd)) {
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int btl_ownership = (frag->base.des_flags & MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
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OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
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frag->base.des_cbfunc(&frag->btl->super, frag->endpoint, &frag->base, frag->rc);
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if( btl_ownership ) {
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MCA_BTL_SCTP_FRAG_RETURN(frag);
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}
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return OMPI_SUCCESS;
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} else {
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btl_endpoint->endpoint_send_frag = frag;
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opal_event_add(&btl_endpoint->endpoint_send_event, 0);
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}
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} else {
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opal_list_append(&btl_endpoint->endpoint_frags, (opal_list_item_t*)frag);
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}
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break;
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case MCA_BTL_SCTP_SHUTDOWN:
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rc = OMPI_ERROR;
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break;
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}
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OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
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return rc;
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}
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else {
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/* 1 to many */
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int rc = OMPI_SUCCESS;
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/* What if there are multiple procs on this endpoint? Possible? */
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orte_vpid_t vpid = btl_endpoint->endpoint_proc->proc_name.vpid;
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OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
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if((mca_btl_sctp_proc_check_vpid(vpid, sender_proc_table)) == INVALID_ENTRY) {
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opal_list_append(&btl_endpoint->endpoint_frags, (opal_list_item_t*)frag);
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rc = mca_btl_sctp_endpoint_start_connect(btl_endpoint);
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/* add the proc to sender_proc_table somewhere here */
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mca_btl_sctp_proc_add_vpid(vpid, btl_endpoint->endpoint_proc, sender_proc_table);
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}
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else { /* VALID_ENTRY */
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if (btl_endpoint->endpoint_send_frag == NULL) {
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if(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY &&
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mca_btl_sctp_frag_send(frag, btl_endpoint->endpoint_sd)) {
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int btl_ownership = (frag->base.des_flags & MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
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OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
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frag->base.des_cbfunc(&frag->btl->super, frag->endpoint, &frag->base, frag->rc);
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if( btl_ownership ) {
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MCA_BTL_SCTP_FRAG_RETURN(frag);
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}
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return OMPI_SUCCESS;
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} else {
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btl_endpoint->endpoint_send_frag = frag;
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/* TODO make this all a function since repeated below */
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/* if this endpoint is already in the sending_endpoints list; don't add duplicate */
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/* if the associated endpoint is this one, avoid putting into the list */
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if(btl_endpoint->endpoint_in_list ||
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btl_endpoint == endpoint_associated_with_send) { /* pointer comparison assumes no dup endpoints */
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; /* leave */
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}
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else if(NULL != endpoint_associated_with_send) {
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/* another endpoint associated with sending on this one-to-many socket */
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/* put this endpoint in the list of endpoints that need to send no matter what... */
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our_sctp_endpoint *our_btl_endpoint;
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if(0 == opal_list_get_size(&sending_endpoints_freelist))
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{
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/* need to expand the freelist */
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our_sctp_endpoint *free_entries;
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int i;
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if(NULL == (endpoint_chunks_to_free_tail->next = (sending_endpoint_chunk *)
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malloc(sizeof(sending_endpoint_chunk))))
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{
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BTL_ERROR(("cannot allocate sending endpoint chunk."));
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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if(NULL == (free_entries = (our_sctp_endpoint *) malloc(sizeof(our_sctp_endpoint)
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* INITIAL_NUM_FREE_POOL_SLOTS)))
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{
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BTL_ERROR(("cannot allocate free poll entries."));
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/* only 1 of 2 newly required allocations were successful so free the other
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* and reset the value so the generic destruction function works.
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*/
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free(endpoint_chunks_to_free_tail->next);
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endpoint_chunks_to_free_tail->next = NULL;
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
|
|
memset(free_entries, 0, sizeof(our_sctp_endpoint) * INITIAL_NUM_FREE_POOL_SLOTS);
|
|
for(i=0; i < INITIAL_NUM_FREE_POOL_SLOTS; i++) {
|
|
opal_list_append(&sending_endpoints_freelist,
|
|
(opal_list_item_t *) &free_entries[i]);
|
|
}
|
|
|
|
/* update location of where we'll expand next (if need be) */
|
|
endpoint_chunks_to_free_tail = endpoint_chunks_to_free_tail->next;
|
|
endpoint_chunks_to_free_tail->next = NULL;
|
|
endpoint_chunks_to_free_tail->to_free = free_entries;
|
|
|
|
|
|
}
|
|
our_btl_endpoint = (our_sctp_endpoint *) opal_list_remove_first(&sending_endpoints_freelist);
|
|
memset(our_btl_endpoint, 0, sizeof(our_sctp_endpoint));
|
|
our_btl_endpoint->endpoint = btl_endpoint;
|
|
opal_list_append(&sending_endpoints, (opal_list_item_t *) our_btl_endpoint);
|
|
btl_endpoint->endpoint_in_list++;
|
|
} else {
|
|
|
|
/* no endpoint is currently associated with sending on this socket */
|
|
opal_event_add(&btl_endpoint->endpoint_send_event, 0);
|
|
endpoint_associated_with_send = btl_endpoint;
|
|
}
|
|
}
|
|
} else {
|
|
/* this btl has pending frags to send to queue this new one */
|
|
opal_list_append(&btl_endpoint->endpoint_frags, (opal_list_item_t*)frag);
|
|
}
|
|
}
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* A blocking send on a non-blocking socket. Used to send the small amount of connection
|
|
* information that identifies the endpoints endpoint.
|
|
*/
|
|
static int mca_btl_sctp_endpoint_send_blocking(mca_btl_base_endpoint_t* btl_endpoint, void* data, size_t size)
|
|
{
|
|
if(mca_btl_sctp_component.sctp_if_11) {
|
|
/* 1 to 1 */
|
|
unsigned char* ptr = (unsigned char*)data;
|
|
size_t cnt = 0;
|
|
while(cnt < size) {
|
|
/* We don't need to pass the sockaddr and len in
|
|
* sctp_sendmsg() as it's a TCP style 1 to 1 socket.
|
|
*/
|
|
int retval = sctp_sendmsg(btl_endpoint->endpoint_sd, (char *)ptr+cnt, size-cnt,
|
|
0, 0, 0, 0, 0, 0, 0);
|
|
if (retval >= 0) {
|
|
SCTP_BTL_ERROR((" mca_btl_sctp_endpoint_send_blocking() sd=%d, retval=%d\n",
|
|
btl_endpoint->endpoint_sd, retval));
|
|
}
|
|
|
|
if(retval < 0) {
|
|
if(opal_socket_errno != EINTR && opal_socket_errno != EAGAIN &&
|
|
opal_socket_errno != EWOULDBLOCK) {
|
|
BTL_ERROR(("send() failed with errno=%d",opal_socket_errno));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return -1;
|
|
}
|
|
continue;
|
|
}
|
|
cnt += retval;
|
|
}
|
|
return cnt;
|
|
}
|
|
|
|
else {
|
|
/* 1 to many */
|
|
unsigned char* ptr = (unsigned char*)data;
|
|
size_t cnt = 0;
|
|
struct sockaddr_in btl_sockaddr;
|
|
|
|
btl_sockaddr = mca_btl_sctp_utils_sockaddr_from_endpoint(btl_endpoint);
|
|
while(cnt < size) {
|
|
socklen_t len = sizeof(struct sockaddr_in);
|
|
int retval = sctp_sendmsg(btl_endpoint->endpoint_sd, (char *)ptr+cnt, size-cnt,
|
|
(struct sockaddr *)&btl_sockaddr, len, 0, 0, 0, 0, 0);
|
|
if (retval >= 0) {
|
|
SCTP_BTL_ERROR((" mca_btl_sctp_endpoint_send_blocking() retval=%d\n", retval));
|
|
}
|
|
|
|
if(retval < 0) {
|
|
if(opal_socket_errno != EINTR && opal_socket_errno != EAGAIN && opal_socket_errno != EWOULDBLOCK) {
|
|
BTL_ERROR(("send() failed with errno=%d",opal_socket_errno));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return -1;
|
|
}
|
|
continue;
|
|
}
|
|
cnt += retval;
|
|
}
|
|
return cnt;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Send the globally unique identifier for this process to a endpoint on
|
|
* a newly connected socket.
|
|
*/
|
|
|
|
static int mca_btl_sctp_endpoint_send_connect_ack(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
/* send process identifier to remote endpoint */
|
|
mca_btl_sctp_proc_t* btl_proc = mca_btl_sctp_proc_local();
|
|
orte_process_name_t guid = btl_proc->proc_name;
|
|
|
|
ORTE_PROCESS_NAME_HTON(guid);
|
|
if(mca_btl_sctp_endpoint_send_blocking(btl_endpoint, &guid, sizeof(guid)) !=
|
|
sizeof(guid)) {
|
|
return OMPI_ERR_UNREACH;
|
|
}
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Check the state of this endpoint. If the incoming connection request matches
|
|
* our endpoints address, check the state of our connection:
|
|
* (1) if a connection has not been attempted, accept the connection
|
|
* (2) if a connection has not been established, and the endpoints process identifier
|
|
* is less than the local process, accept the connection
|
|
* otherwise, reject the connection and continue with the current connection
|
|
*/
|
|
|
|
bool mca_btl_sctp_endpoint_accept(mca_btl_base_endpoint_t* btl_endpoint, struct sockaddr_in* addr, int sd)
|
|
{
|
|
if(mca_btl_sctp_component.sctp_if_11) {
|
|
/* 1 to 1 */
|
|
mca_btl_sctp_addr_t* btl_addr;
|
|
mca_btl_sctp_proc_t* this_proc = mca_btl_sctp_proc_local();
|
|
int cmpval;
|
|
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_recv_lock);
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
if(((btl_addr = btl_endpoint->endpoint_addr) != NULL) &&
|
|
btl_addr->addr_inet.s_addr == addr->sin_addr.s_addr)
|
|
{
|
|
mca_btl_sctp_proc_t *endpoint_proc = btl_endpoint->endpoint_proc;
|
|
cmpval = orte_util_compare_name_fields(ORTE_NS_CMP_ALL,
|
|
&endpoint_proc->proc_ompi->proc_name,
|
|
&this_proc->proc_ompi->proc_name);
|
|
if((btl_endpoint->endpoint_sd < 0) ||
|
|
(btl_endpoint->endpoint_state != MCA_BTL_SCTP_CONNECTED &&
|
|
cmpval < 0)) {
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
SCTP_BTL_ERROR(("endpoint_close in endpoint_accept #1\n"));
|
|
btl_endpoint->endpoint_sd = sd;
|
|
if(mca_btl_sctp_endpoint_send_connect_ack(btl_endpoint) != OMPI_SUCCESS) {
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
SCTP_BTL_ERROR(("endpoint_close in endpoint_accept #2\n"));
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
return false;
|
|
}
|
|
mca_btl_sctp_endpoint_event_init(btl_endpoint, sd);
|
|
opal_event_add(&btl_endpoint->endpoint_recv_event, 0);
|
|
mca_btl_sctp_endpoint_connected(btl_endpoint);
|
|
#if OMPI_ENABLE_DEBUG && WANT_PEER_DUMP
|
|
mca_btl_sctp_endpoint_dump(btl_endpoint, "accepted");
|
|
#endif
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
return true;
|
|
}
|
|
}
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
return false;
|
|
}
|
|
|
|
else {
|
|
/* 1 to many */
|
|
mca_btl_sctp_addr_t* btl_addr;
|
|
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_recv_lock);
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
if((btl_addr = btl_endpoint->endpoint_addr) != NULL) {
|
|
|
|
/* conflicts can't happen with one-to-many socket */
|
|
mca_btl_sctp_endpoint_event_init(btl_endpoint, sd);
|
|
opal_event_add(&btl_endpoint->endpoint_recv_event, 0);
|
|
#if OMPI_ENABLE_DEBUG && WANT_PEER_DUMP
|
|
mca_btl_sctp_endpoint_dump(btl_endpoint, "accepted");
|
|
#endif
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
return true;
|
|
}
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Remove any event registrations associated with the socket
|
|
* and update the endpoint state to reflect the connection has
|
|
* been closed.
|
|
*/
|
|
|
|
void mca_btl_sctp_endpoint_close(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
SCTP_BTL_ERROR(("inside endpoint_close (sd = %d)\n", btl_endpoint->endpoint_sd));
|
|
|
|
if(btl_endpoint->endpoint_sd >= 0) {
|
|
opal_event_del(&btl_endpoint->endpoint_recv_event);
|
|
opal_event_del(&btl_endpoint->endpoint_send_event);
|
|
CLOSE_THE_SOCKET(btl_endpoint->endpoint_sd);
|
|
btl_endpoint->endpoint_sd = -1;
|
|
#if MCA_BTL_SCTP_ENDPOINT_CACHE
|
|
free( btl_endpoint->endpoint_cache );
|
|
btl_endpoint->endpoint_cache = NULL;
|
|
btl_endpoint->endpoint_cache_pos = NULL;
|
|
btl_endpoint->endpoint_cache_length = 0;
|
|
#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
|
|
}
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_CLOSED;
|
|
btl_endpoint->endpoint_retries++;
|
|
}
|
|
|
|
void mca_btl_sctp_endpoint_shutdown(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_recv_lock);
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_SHUTDOWN;
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
}
|
|
|
|
|
|
/*
|
|
* Setup endpoint state to reflect that connection has been established,
|
|
* and start any pending sends.
|
|
*/
|
|
|
|
static void mca_btl_sctp_endpoint_connected(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
if(mca_btl_sctp_component.sctp_if_11) {
|
|
/* 1 to 1 */
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_CONNECTED;
|
|
btl_endpoint->endpoint_retries = 0;
|
|
if(opal_list_get_size(&btl_endpoint->endpoint_frags) > 0) {
|
|
if(NULL == btl_endpoint->endpoint_send_frag) {
|
|
btl_endpoint->endpoint_send_frag = (mca_btl_sctp_frag_t*)
|
|
opal_list_remove_first(&btl_endpoint->endpoint_frags);
|
|
}
|
|
opal_event_add(&btl_endpoint->endpoint_send_event, 0);
|
|
}
|
|
}
|
|
else {
|
|
/* 1 to many */
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_CONNECTED;
|
|
btl_endpoint->endpoint_retries = 0;
|
|
if(opal_list_get_size(&btl_endpoint->endpoint_frags) > 0) {
|
|
if(NULL == btl_endpoint->endpoint_send_frag) {
|
|
btl_endpoint->endpoint_send_frag = (mca_btl_sctp_frag_t*)
|
|
opal_list_remove_first(&btl_endpoint->endpoint_frags);
|
|
}
|
|
|
|
|
|
/* TOOD make this all a function since repeated below */
|
|
|
|
/* if this endpoint is already in the sending_endpoints list; don't add duplicate */
|
|
/* if the associated endpoint is this one, avoid putting into the list */
|
|
if(btl_endpoint->endpoint_in_list ||
|
|
btl_endpoint == endpoint_associated_with_send) { /* pointer comparison assumes no dup endpoints */
|
|
; /* leave */
|
|
}
|
|
else if(NULL != endpoint_associated_with_send) {
|
|
/* another endpoint associated with sending on this one-to-many socket */
|
|
|
|
/* put this endpoint in the list of endpoints that need to send no matter what... */
|
|
our_sctp_endpoint *our_btl_endpoint;
|
|
|
|
if(0 == opal_list_get_size(&sending_endpoints_freelist))
|
|
{
|
|
/* need to expand the freelist */
|
|
|
|
our_sctp_endpoint *free_entries;
|
|
int i;
|
|
|
|
if(NULL == (endpoint_chunks_to_free_tail->next = (sending_endpoint_chunk *)
|
|
malloc(sizeof(sending_endpoint_chunk))))
|
|
{
|
|
BTL_ERROR(("cannot allocate sending endpoint chunk."));
|
|
return;
|
|
}
|
|
|
|
|
|
if(NULL == (free_entries = (our_sctp_endpoint *) malloc(sizeof(our_sctp_endpoint)
|
|
* INITIAL_NUM_FREE_POOL_SLOTS)))
|
|
{
|
|
BTL_ERROR(("cannot allocate free poll entries."));
|
|
/* only 1 of 2 newly required allocations were successful so free the other
|
|
* and reset the value so the generic destruction function works.
|
|
*/
|
|
free(endpoint_chunks_to_free_tail->next);
|
|
endpoint_chunks_to_free_tail->next = NULL;
|
|
return;
|
|
}
|
|
for(i=0; i < INITIAL_NUM_FREE_POOL_SLOTS; i++) {
|
|
opal_list_append(&sending_endpoints_freelist,
|
|
(opal_list_item_t *) &free_entries[i]);
|
|
}
|
|
|
|
/* update location of where we'll expand next (if need be) */
|
|
endpoint_chunks_to_free_tail = endpoint_chunks_to_free_tail->next;
|
|
endpoint_chunks_to_free_tail->next = NULL;
|
|
endpoint_chunks_to_free_tail->to_free = free_entries;
|
|
|
|
|
|
}
|
|
our_btl_endpoint = (our_sctp_endpoint *) opal_list_remove_first(&sending_endpoints_freelist);
|
|
memset(our_btl_endpoint, 0, sizeof(our_sctp_endpoint));
|
|
our_btl_endpoint->endpoint = btl_endpoint;
|
|
opal_list_append(&sending_endpoints, (opal_list_item_t *) our_btl_endpoint);
|
|
btl_endpoint->endpoint_in_list++;
|
|
} else {
|
|
|
|
/* no endpoint is currently associated with sending on this socket */
|
|
opal_event_add(&btl_endpoint->endpoint_send_event, 0);
|
|
endpoint_associated_with_send = btl_endpoint;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* A blocking recv on a non-blocking socket. Used to receive the small amount of connection
|
|
* information that identifies the endpoints endpoint.
|
|
*/
|
|
static int mca_btl_sctp_endpoint_recv_blocking(mca_btl_base_endpoint_t* btl_endpoint, void* data, size_t size)
|
|
{
|
|
if(mca_btl_sctp_component.sctp_if_11) {
|
|
/* 1 to 1 */
|
|
unsigned char* ptr = (unsigned char*)data;
|
|
size_t cnt = 0;
|
|
int retval;
|
|
int msg_flags=0;
|
|
struct sctp_sndrcvinfo sri;
|
|
|
|
while(cnt < size) {
|
|
/* We don't need to pass the sockaddr and len in
|
|
* sctp_recvmsg() as it's a TCP style 1 to 1 socket.
|
|
*/
|
|
retval = sctp_recvmsg(btl_endpoint->endpoint_sd, (char *)ptr+cnt, size-cnt,
|
|
0, 0, &sri, &msg_flags);
|
|
|
|
/* remote closed connection */
|
|
if((retval == -1 && (opal_socket_errno == ECONNRESET || opal_socket_errno == EBADF))
|
|
|| retval == 0) {
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return -1;
|
|
}
|
|
|
|
/* socket is non-blocking so handle errors */
|
|
if(retval < 0) {
|
|
if(opal_socket_errno != EINTR && opal_socket_errno != EAGAIN && opal_socket_errno != EWOULDBLOCK) {
|
|
BTL_ERROR(("recv() failed with errno=%d",opal_socket_errno));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return -1;
|
|
}
|
|
continue;
|
|
}
|
|
SCTP_BTL_ERROR(("mca_btl_sctp_endpoint_recv_blocking() sd=%d, got %d bytes.\n", btl_endpoint->endpoint_sd, retval));
|
|
|
|
cnt += retval;
|
|
}
|
|
return cnt;
|
|
}
|
|
|
|
assert(0); /* not called in 1 to many, i don't think... */
|
|
return -1; /* never happens. avoids compiler warning. */
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Receive the endpoints globally unique process identification from a newly
|
|
* connected socket and verify the expected response. If so, move the
|
|
* socket to a connected state.
|
|
*/
|
|
|
|
static int mca_btl_sctp_endpoint_recv_connect_ack(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
orte_process_name_t guid;
|
|
mca_btl_sctp_proc_t* btl_proc = btl_endpoint->endpoint_proc;
|
|
|
|
if((mca_btl_sctp_endpoint_recv_blocking(btl_endpoint, &guid,
|
|
sizeof(orte_process_name_t))) != sizeof(orte_process_name_t)) {
|
|
return OMPI_ERR_UNREACH;
|
|
}
|
|
ORTE_PROCESS_NAME_NTOH(guid);
|
|
|
|
/* compare this to the expected values */
|
|
if(memcmp(&btl_proc->proc_name, &guid, sizeof(orte_process_name_t)) != 0) {
|
|
BTL_ERROR(("received unexpected process identifier [%lu,%lu,%lu]",
|
|
ORTE_NAME_ARGS(&guid)));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return OMPI_ERR_UNREACH;
|
|
}
|
|
|
|
/* connected */
|
|
mca_btl_sctp_endpoint_connected(btl_endpoint);
|
|
#if OMPI_ENABLE_DEBUG && WANT_PEER_DUMP
|
|
mca_btl_sctp_endpoint_dump(btl_endpoint, "connected");
|
|
#endif
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
int mca_btl_sctp_set_socket_options(int sd)
|
|
{
|
|
int optval, flags;
|
|
struct sctp_event_subscribe evnts;
|
|
|
|
/* register io event here to see populated sndrcvinfo struct */
|
|
|
|
memset(&evnts, 0, sizeof(evnts));
|
|
evnts.sctp_data_io_event = 1;
|
|
if(setsockopt(sd, IPPROTO_SCTP, SCTP_EVENTS, &evnts, sizeof(evnts)) < 0) {
|
|
BTL_ERROR(("setsockopt(SCTP_EVENTS) failed with errno=%d", opal_socket_errno));
|
|
return OMPI_ERROR;
|
|
}
|
|
|
|
/*TODO set maximum number of streams */
|
|
|
|
#if defined(SCTP_NODELAY)
|
|
optval = mca_btl_sctp_component.sctp_use_nodelay;
|
|
if(setsockopt(sd, IPPROTO_SCTP, SCTP_NODELAY, (char *)&optval, sizeof(optval)) < 0) {
|
|
BTL_ERROR(("setsockopt(SCTP_NODELAY) failed with errno=%d", opal_socket_errno));
|
|
return OMPI_ERROR;
|
|
}
|
|
#endif
|
|
#if defined(SO_SNDBUF)
|
|
if(mca_btl_sctp_component.sctp_sndbuf > 0 &&
|
|
setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *)&mca_btl_sctp_component.sctp_sndbuf, sizeof(int)) < 0) {
|
|
BTL_ERROR(("setsockopt(SO_SNDBUF) failed with errno %d", opal_socket_errno));
|
|
return OMPI_ERROR;
|
|
}
|
|
#endif
|
|
#if defined(SO_RCVBUF)
|
|
if(mca_btl_sctp_component.sctp_rcvbuf > 0 &&
|
|
setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *)&mca_btl_sctp_component.sctp_rcvbuf, sizeof(int)) < 0) {
|
|
BTL_ERROR(("setsockopt(SO_RCVBUF) failed with errno %d", opal_socket_errno));
|
|
return OMPI_ERROR;
|
|
}
|
|
#endif
|
|
|
|
/* set socket up to be non-blocking */
|
|
if((flags = fcntl(sd, F_GETFL, 0)) < 0) {
|
|
BTL_ERROR(("fcntl(F_GETFL) failed with errno=%d", opal_socket_errno));
|
|
return OMPI_ERROR;
|
|
} else {
|
|
flags |= O_NONBLOCK;
|
|
if(fcntl(sd, F_SETFL, flags) < 0) {
|
|
BTL_ERROR(("fcntl(F_SETFL) failed with errno=%d", opal_socket_errno));
|
|
return OMPI_ERROR;
|
|
}
|
|
}
|
|
|
|
return OMPI_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Start a connection to the endpoint. This will likely not complete,
|
|
* as the socket is set to non-blocking, so register for event
|
|
* notification of connect completion. On connection we send
|
|
* our globally unique process identifier to the endpoint and wait for
|
|
* the endpoints response.
|
|
*/
|
|
|
|
static int mca_btl_sctp_endpoint_start_connect(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
if(mca_btl_sctp_component.sctp_if_11) {
|
|
/* 1 to 1 */
|
|
int rc;
|
|
struct sockaddr_in endpoint_addr;
|
|
|
|
btl_endpoint->endpoint_sd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
|
|
if (btl_endpoint->endpoint_sd < 0) {
|
|
btl_endpoint->endpoint_retries++;
|
|
return OMPI_ERR_UNREACH;
|
|
}
|
|
|
|
/* bind NIC in this btl to this newly created socket */
|
|
if(bind(btl_endpoint->endpoint_sd, (struct sockaddr *)
|
|
&btl_endpoint->endpoint_btl->sctp_ifaddr,
|
|
sizeof(struct sockaddr_in)) < 0) {
|
|
return OMPI_ERR_FATAL;
|
|
}
|
|
|
|
|
|
/* setup socket buffer sizes */
|
|
if((rc = mca_btl_sctp_set_socket_options(btl_endpoint->endpoint_sd)) != OMPI_SUCCESS) {
|
|
return OMPI_ERR_FATAL;
|
|
}
|
|
|
|
/* setup event callbacks */
|
|
mca_btl_sctp_endpoint_event_init(btl_endpoint, btl_endpoint->endpoint_sd);
|
|
|
|
/* start the connect - will likely fail with EINPROGRESS */
|
|
memset(&endpoint_addr, 0, sizeof(endpoint_addr));
|
|
endpoint_addr.sin_family = AF_INET;
|
|
endpoint_addr.sin_addr = btl_endpoint->endpoint_addr->addr_inet;
|
|
endpoint_addr.sin_port = btl_endpoint->endpoint_addr->addr_port;
|
|
#ifdef FREEBSD
|
|
endpoint_addr.sin_len = sizeof(struct sockaddr);
|
|
#endif
|
|
if(connect(btl_endpoint->endpoint_sd, (struct sockaddr*)&endpoint_addr,
|
|
sizeof(endpoint_addr)) < 0)
|
|
{
|
|
/* non-blocking so wait for completion */
|
|
if(opal_socket_errno == EINPROGRESS ||
|
|
opal_socket_errno == EWOULDBLOCK)
|
|
{
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_CONNECTING;
|
|
opal_event_add(&btl_endpoint->endpoint_send_event, 0);
|
|
return OMPI_SUCCESS;
|
|
}
|
|
SCTP_BTL_ERROR(("endpoint_close in start_connect #1\n"));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
btl_endpoint->endpoint_retries++;
|
|
return OMPI_ERR_UNREACH;
|
|
}
|
|
|
|
/* send our globally unique process identifier to the endpoint */
|
|
if((rc = mca_btl_sctp_endpoint_send_connect_ack(btl_endpoint)) == OMPI_SUCCESS) {
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_CONNECT_ACK;
|
|
opal_event_add(&btl_endpoint->endpoint_recv_event, 0);
|
|
} else {
|
|
SCTP_BTL_ERROR(("endpoint_close in start_connect #2\n"));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
else {
|
|
/* 1 to many */
|
|
int rc;
|
|
struct sockaddr_in endpoint_addr;
|
|
|
|
/* setup event callbacks */
|
|
mca_btl_sctp_endpoint_event_init(btl_endpoint, btl_endpoint->endpoint_sd);
|
|
if (btl_endpoint->endpoint_sd < 0) {
|
|
btl_endpoint->endpoint_retries++;
|
|
return OMPI_ERR_UNREACH;
|
|
}
|
|
|
|
endpoint_addr = mca_btl_sctp_utils_sockaddr_from_endpoint(btl_endpoint);
|
|
|
|
/* send our globally unique process identifier to the endpoint */
|
|
if((rc = mca_btl_sctp_endpoint_send_connect_ack(btl_endpoint)) == OMPI_SUCCESS) {
|
|
/* Changing this to CONNECTED so that we bipass application level acks. */
|
|
mca_btl_sctp_endpoint_connected(btl_endpoint);
|
|
|
|
} else {
|
|
SCTP_BTL_ERROR(("endpoint_close in start_connect #3\n"));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
}
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Check the status of the connection. If the connection failed, will retry
|
|
* later. Otherwise, send this processes identifier to the endpoint on the
|
|
* newly connected socket.
|
|
*/
|
|
|
|
static void mca_btl_sctp_endpoint_complete_connect(mca_btl_base_endpoint_t* btl_endpoint)
|
|
{
|
|
int so_error = 0;
|
|
opal_socklen_t so_length = sizeof(so_error);
|
|
|
|
/* unregister from receiving event notifications */
|
|
opal_event_del(&btl_endpoint->endpoint_send_event);
|
|
|
|
/* check connect completion status */
|
|
if(getsockopt(btl_endpoint->endpoint_sd, SOL_SOCKET, SO_ERROR, (char *)&so_error, &so_length) < 0) {
|
|
BTL_ERROR(("getsockopt() failed with errno=%d", opal_socket_errno));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return;
|
|
}
|
|
if(so_error == EINPROGRESS || so_error == EWOULDBLOCK) {
|
|
opal_event_add(&btl_endpoint->endpoint_send_event, 0);
|
|
return;
|
|
}
|
|
if(so_error != 0) {
|
|
BTL_ERROR(("connect() failed with errno=%d", so_error));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
return;
|
|
}
|
|
|
|
if(mca_btl_sctp_endpoint_send_connect_ack(btl_endpoint) == OMPI_SUCCESS) {
|
|
btl_endpoint->endpoint_state = MCA_BTL_SCTP_CONNECT_ACK;
|
|
opal_event_add(&btl_endpoint->endpoint_recv_event, 0);
|
|
} else {
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
}
|
|
}
|
|
|
|
/* used in 1-1 only */
|
|
/*
|
|
* A file descriptor is available/ready for recv. Check the state
|
|
* of the socket and take the appropriate action.
|
|
*/
|
|
|
|
static void mca_btl_sctp_endpoint_recv_handler(int sd, short flags, void* user)
|
|
{
|
|
char *foo;
|
|
int foo_len;
|
|
mca_btl_base_endpoint_t* btl_endpoint = (mca_btl_base_endpoint_t *)user;
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_recv_lock);
|
|
switch(btl_endpoint->endpoint_state) {
|
|
case MCA_BTL_SCTP_CONNECT_ACK:
|
|
{
|
|
mca_btl_sctp_endpoint_recv_connect_ack(btl_endpoint);
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
break;
|
|
}
|
|
case MCA_BTL_SCTP_CONNECTED:
|
|
{
|
|
mca_btl_sctp_frag_t* frag;
|
|
|
|
frag = btl_endpoint->endpoint_recv_frag;
|
|
if(NULL == frag) {
|
|
int rc;
|
|
if(mca_btl_sctp_module.super.btl_max_send_size >
|
|
mca_btl_sctp_module.super.btl_eager_limit) {
|
|
MCA_BTL_SCTP_FRAG_ALLOC_MAX(frag, rc);
|
|
} else {
|
|
MCA_BTL_SCTP_FRAG_ALLOC_EAGER(frag, rc);
|
|
}
|
|
|
|
if(NULL == frag) {
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
return;
|
|
}
|
|
MCA_BTL_SCTP_FRAG_INIT_DST(frag, btl_endpoint);
|
|
}
|
|
|
|
#if MCA_BTL_SCTP_ENDPOINT_CACHE
|
|
assert( 0 == btl_endpoint->endpoint_cache_length );
|
|
data_still_pending_on_endpoint:
|
|
#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
|
|
/* check for completion of non-blocking recv on the current fragment */
|
|
|
|
/* Changed frag_recv call so adding dummy params here to allow
|
|
* compilation. This setup does not work for 1 to 1.
|
|
*/
|
|
if(mca_btl_sctp_frag_recv(frag, sd, foo, foo_len) == false) {
|
|
btl_endpoint->endpoint_recv_frag = frag;
|
|
} else {
|
|
btl_endpoint->endpoint_recv_frag = NULL;
|
|
switch(frag->hdr.type) {
|
|
case MCA_BTL_SCTP_HDR_TYPE_SEND:
|
|
{
|
|
mca_btl_active_message_callback_t* reg;
|
|
reg = mca_btl_base_active_message_trigger + frag->hdr.base.tag;
|
|
reg->cbfunc(&frag->btl->super, frag->hdr.base.tag, &frag->base, reg->cbdata);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
#if MCA_BTL_SCTP_ENDPOINT_CACHE
|
|
if( 0 != btl_endpoint->endpoint_cache_length ) {
|
|
/* If the cache still contain some data we can reuse the same fragment
|
|
* until we flush it completly.
|
|
*/
|
|
MCA_BTL_SCTP_FRAG_INIT_DST(frag, btl_endpoint);
|
|
goto data_still_pending_on_endpoint;
|
|
}
|
|
#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
|
|
MCA_BTL_SCTP_FRAG_RETURN(frag);
|
|
}
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
#if MCA_BTL_SCTP_ENDPOINT_CACHE
|
|
assert( 0 == btl_endpoint->endpoint_cache_length );
|
|
#endif /* MCA_BTL_SCTP_ENDPOINT_CACHE */
|
|
break;
|
|
}
|
|
case MCA_BTL_SCTP_SHUTDOWN:
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
break;
|
|
default:
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_recv_lock);
|
|
BTL_ERROR(("invalid socket state(%d)", btl_endpoint->endpoint_state));
|
|
mca_btl_sctp_endpoint_close(btl_endpoint);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* A file descriptor is available/ready for send. Check the state
|
|
* of the socket and take the appropriate action.
|
|
*/
|
|
|
|
static void mca_btl_sctp_endpoint_send_handler(int sd, short flags, void* user)
|
|
{
|
|
if(mca_btl_sctp_component.sctp_if_11) {
|
|
/* 1 to 1 */
|
|
mca_btl_sctp_endpoint_t* btl_endpoint = (mca_btl_sctp_endpoint_t *)user;
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
switch(btl_endpoint->endpoint_state) {
|
|
case MCA_BTL_SCTP_CONNECTING:
|
|
mca_btl_sctp_endpoint_complete_connect(btl_endpoint);
|
|
break;
|
|
case MCA_BTL_SCTP_CONNECTED:
|
|
{
|
|
int btl_ownership;
|
|
/* complete the current send */
|
|
do {
|
|
mca_btl_sctp_frag_t* frag = btl_endpoint->endpoint_send_frag;
|
|
if(mca_btl_sctp_frag_send(frag, btl_endpoint->endpoint_sd) == false) {
|
|
break;
|
|
}
|
|
/* progress any pending sends */
|
|
btl_endpoint->endpoint_send_frag = (mca_btl_sctp_frag_t*)
|
|
opal_list_remove_first(&btl_endpoint->endpoint_frags);
|
|
|
|
btl_ownership = (frag->base.des_flags & MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
|
|
/* if required - update request status and release fragment */
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
frag->base.des_cbfunc(&frag->btl->super, frag->endpoint, &frag->base, frag->rc);
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
if( btl_ownership ) {
|
|
MCA_BTL_SCTP_FRAG_RETURN(frag);
|
|
}
|
|
} while (NULL != btl_endpoint->endpoint_send_frag);
|
|
|
|
/* if nothing else to do unregister for send event notifications */
|
|
if(NULL == btl_endpoint->endpoint_send_frag) {
|
|
opal_event_del(&btl_endpoint->endpoint_send_event);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
BTL_ERROR(("invalid connection state (%d)",
|
|
btl_endpoint->endpoint_state));
|
|
opal_event_del(&btl_endpoint->endpoint_send_event);
|
|
break;
|
|
}
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
}
|
|
|
|
else {
|
|
/* 1 to many */
|
|
mca_btl_sctp_endpoint_t* btl_endpoint = (mca_btl_sctp_endpoint_t *)user;
|
|
our_sctp_endpoint *current_our_endpoint = NULL;
|
|
orte_vpid_t vpid;
|
|
send_handler_1_to_many_different_endpoint:
|
|
vpid = btl_endpoint->endpoint_proc->proc_name.vpid;
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
if((mca_btl_sctp_proc_check_vpid(vpid, sender_proc_table)) == VALID_ENTRY) { int btl_ownership;
|
|
|
|
/* complete the current send */
|
|
do {
|
|
mca_btl_sctp_frag_t* frag = btl_endpoint->endpoint_send_frag;
|
|
if(NULL == frag) {
|
|
break;
|
|
}
|
|
if(mca_btl_sctp_frag_send(frag, btl_endpoint->endpoint_sd) == false) {
|
|
break;
|
|
}
|
|
/* progress any pending sends */
|
|
btl_endpoint->endpoint_send_frag = (mca_btl_sctp_frag_t*)
|
|
opal_list_remove_first(&btl_endpoint->endpoint_frags);
|
|
|
|
btl_ownership = (frag->base.des_flags & MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
|
|
/* if required - update request status and release fragment */
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
frag->base.des_cbfunc(&frag->btl->super, frag->endpoint, &frag->base, frag->rc);
|
|
OPAL_THREAD_LOCK(&btl_endpoint->endpoint_send_lock);
|
|
if( btl_ownership ) {
|
|
MCA_BTL_SCTP_FRAG_RETURN(frag);
|
|
}
|
|
|
|
}while (NULL != btl_endpoint->endpoint_send_frag);
|
|
|
|
/* if nothing else to do unregister for send event notifications */
|
|
if(NULL == btl_endpoint->endpoint_send_frag && NULL == current_our_endpoint) {
|
|
|
|
/* remove the send event with this endpoint */
|
|
opal_event_del(&btl_endpoint->endpoint_send_event);
|
|
endpoint_associated_with_send = NULL;
|
|
|
|
/* see if there is another endpoint that wants the send event */
|
|
if(opal_list_get_size(&sending_endpoints) > 0) {
|
|
|
|
/* entries in the list may be stale from walk-throughs, so prune these
|
|
* while verifying the entries. now pruned everytime the endpoint associated with
|
|
* POLLOUT on the one-to-many socket completes sending all of its frags.
|
|
*/
|
|
our_sctp_endpoint *our_btl_endpoint;
|
|
mca_btl_sctp_endpoint_t *next_endpoint;
|
|
|
|
while(opal_list_get_size(&sending_endpoints)) {
|
|
our_btl_endpoint = (our_sctp_endpoint *) opal_list_remove_first(&sending_endpoints);
|
|
next_endpoint = our_btl_endpoint->endpoint;
|
|
if(NULL == next_endpoint->endpoint_send_frag)
|
|
{
|
|
/* stale entry */
|
|
opal_list_append(&sending_endpoints_freelist, (opal_list_item_t *) our_btl_endpoint);
|
|
our_btl_endpoint = NULL;
|
|
next_endpoint->endpoint_in_list--;
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
/* go with this one */
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(NULL != our_btl_endpoint)
|
|
{
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
OPAL_THREAD_LOCK(&next_endpoint->endpoint_send_lock);
|
|
btl_endpoint = next_endpoint;
|
|
assert(btl_endpoint->endpoint_in_list > 0);
|
|
btl_endpoint->endpoint_in_list--;
|
|
opal_event_add(&btl_endpoint->endpoint_send_event, 0);
|
|
opal_list_append(&sending_endpoints_freelist, (opal_list_item_t *) our_btl_endpoint);
|
|
endpoint_associated_with_send = btl_endpoint;
|
|
goto send_handler_1_to_many_different_endpoint;
|
|
}
|
|
}
|
|
} else if(opal_list_get_size(&sending_endpoints) > 0) {
|
|
/* sending_endpoints might contain entries with different endpoints (i.e. non-duplicates) */
|
|
|
|
/* This case happens if one association on the one-to-many socket returns EAGAIN but we
|
|
* want to try another association on the same socket (in the kernel, different associations
|
|
* have different buffers despite sharing the same socket).
|
|
*/
|
|
|
|
/* if we're in the middle of a traversal and we've completed all the frags on some endpoint,
|
|
* we need to remove it from the list */
|
|
OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
|
|
if(NULL == current_our_endpoint)
|
|
{
|
|
/* start traversing the list */
|
|
current_our_endpoint = (our_sctp_endpoint *) opal_list_get_first(&sending_endpoints);
|
|
sending_endpoints_walk_count = 0;
|
|
}
|
|
else
|
|
{
|
|
/* continue traversing the list */
|
|
current_our_endpoint = (our_sctp_endpoint *) opal_list_get_next(current_our_endpoint);
|
|
sending_endpoints_walk_count++;
|
|
}
|
|
|
|
if(NULL != current_our_endpoint &&
|
|
sending_endpoints_walk_count < (int) opal_list_get_size(&sending_endpoints))
|
|
{
|
|
btl_endpoint = current_our_endpoint->endpoint;
|
|
goto send_handler_1_to_many_different_endpoint;
|
|
}
|
|
else { /* done walking through sending_endpoints list */
|
|
return; /* don't want to unlock the send_lock twice */
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
BTL_ERROR(("invalid connection state (%d)",
|
|
btl_endpoint->endpoint_state));
|
|
/*TODO: update del code to use sending_endpoints list */
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opal_event_del(&btl_endpoint->endpoint_send_event);
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}
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OPAL_THREAD_UNLOCK(&btl_endpoint->endpoint_send_lock);
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}
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|
}
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