-
Notifications
You must be signed in to change notification settings - Fork 7
/
cmfabric.c
2633 lines (2331 loc) · 78.6 KB
/
cmfabric.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/***** Includes *****/
#include "config.h"
#include <sys/types.h>
#include <inttypes.h>
#include <getopt.h>
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
#include <sys/socket.h>
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#ifdef HAVE_HOSTLIB_H
#include "hostLib.h"
#endif
#ifdef HAVE_STREAMS_UN_H
#include <streams/un.h>
#endif
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include <stdio.h>
#include <fcntl.h>
#ifndef HAVE_WINDOWS_H
#include <net/if.h>
#include <netinet/tcp.h>
#include <sys/ioctl.h>
#include <errno.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#undef NDEBUG
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#include <rdma/fabric.h>
#include <rdma/fi_endpoint.h>
#include <rdma/fi_rma.h>
#include <rdma/fi_cm.h>
#include <rdma/fi_errno.h>
#include <rdma/fi_eq.h>
#include <atl.h>
#include "evpath.h"
#include "cm_transport.h"
#include "cm_internal.h"
#include "ev_select.h"
#include <stdlib.h>
#ifndef SOCKET_ERROR
#define SOCKET_ERROR -1
#endif
#define _WITH_IB_
#define PIGGYBACK 1025*10
#ifdef _WITH_IB_
#if defined (__INTEL_COMPILER)
# pragma warning (disable: 869)
# pragma warning (disable: 310)
# pragma warning (disable: 1418)
# pragma warning (disable: 180)
# pragma warning (disable: 2259)
# pragma warning (disable: 177)
#endif
// BEGIN from shared.h in fabtests
/* haven't tested with earlier than version 1.2 */
#define FT_FIVERSION FI_VERSION(1,2)
void cq_readerr(struct fid_cq *cq, char *cq_str);
#define FT_PRINTERR(call, retv) \
do { fprintf(stderr, call "(): %d, %d (%s)\n", __LINE__, (int) retv, fi_strerror((int) -retv)); } while (0)
#define FT_ERR(fmt, ...) \
do { fprintf(stderr, "%s:%d: " fmt, __FILE__, __LINE__, ##__VA_ARGS__); } while (0)
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
// END from shared.h in fabtests
//all the message types have a queue associated with them
static char *msg_string[] = {"Request", "Response", "Piggyback"};
enum {msg_request = 0, msg_response = 1, msg_piggyback = 2} msg_type;
struct remote_entry {
uint64_t remote_addr;
uint32_t length;
uint64_t rkey;
};
struct request
{
uint64_t length;
uint32_t iovcnt;
uint32_t piggyback_length;
uint64_t request_ID;
struct remote_entry read_list[1];
};
struct response
{
uint64_t max_length;
uint64_t request_ID;
};
struct piggyback
{
uint32_t total_length;
uint32_t padding;
char body[4];
};
struct control_message
{
int type;
union {
struct request req;
struct response resp;
struct piggyback pb;
} u;
};
#define ptr_from_int64(p) (void *)(unsigned long)(p)
#define int64_from_ptr(p) (u_int64_t)(unsigned long)(p)
struct msg_item;
typedef enum pull_status_t {PULL_UNSUBMITTED = 0, PULL_SUBMITTED, PULL_COMPLETED, PULL_ACCOUNTED} pull_status_t;
struct pull_record {
struct remote_entry remote;
char *dest;
pull_status_t status;
struct msg_item *parent;
};
struct mr_list_item;
struct fabric_connection_data;
typedef struct msg_item {
struct fabric_connection_data *conn_data;
char *buffer;
long cur_buffer_size;
long message_size;
uint64_t request_ID;
struct fid_mr *mr;
int pull_count;
struct pull_record *pulls;
struct mr_list_item *mr_rec;
struct msg_item *next;
} *msg_item_p;
struct fabric_client_data;
typedef struct mr_list_item {
struct fabric_client_data *fabd;
long buffer_length;
void *buffer;
struct fid_mr *mr;
int in_use;
struct mr_list_item *next;
} *mr_list;
typedef struct fabric_client_data {
CManager cm;
CMtrans_services svc;
transport_entry trans;
struct fi_info *hints;
struct fid_fabric *fab;
struct fid_pep *listen_ep;
struct fid_domain *dom;
struct fid_eq *cmeq;
char *hostname;
int listen_port;
int lid;
int qpn;
int psn;
int port;
struct ibv_device *ibdev;
struct ibv_context *context;
struct ibv_comp_channel *send_channel;
struct ibv_comp_channel *recv_channel;
struct ibv_pd *pd;
struct ibv_cq *recv_cq;
struct ibv_cq *send_cq;
struct ibv_srq *srq;
int max_sge;
struct timeval pull_schedule_base;
struct timeval pull_schedule_period;
CMavail_period_ptr avail;
mr_list existing_mr_list;
int thread_init;
msg_item_p pull_queue;
msg_item_p completed_queue;
pthread_mutex_t pull_queue_mutex;
int thread_should_run;
struct fid_wait *send_waitset;
fd_set readset;
int nfds;
int wake_read_fd;
int wake_write_fd;
struct fabric_connection_data **fcd_array_by_sfd;
int ncqs;
struct fid **cq_array;
} *fabric_client_data_ptr;
typedef struct remote_info
{
int iovcnt;
struct fid_mr **mrlist;
struct iovec *iov;
CMcompletion_notify_func notify_func;
void *notify_client_data;
}rinfo;
typedef struct fabric_connection_data {
fabric_client_data_ptr fabd;
struct fid_cq *rcq, *scq;
struct fid_mr *read_mr;
struct fid_mr *send_mr;
struct fid_ep *conn_ep;
size_t buffer_size;
void *mapped_recv_buf;
char *send_buf;
CMbuffer read_buf;
int max_credits;
int read_buffer_len;
int read_offset;
char *remote_host;
int remote_IP;
int remote_contact_port;
int fd;
int sfd; /* fd for the scq */
CMConnection conn;
struct ibv_qp *dataqp;
int infocount;
rinfo last_write;
int max_imm_data;
} *fabric_conn_data_ptr;
static inline int msg_offset()
{
return ((int) (((char *) (&(((struct control_message *)NULL)->u.pb.body[0]))) - ((char *) NULL)));
}
static int alloc_cm_res(fabric_client_data_ptr fabd);
static int alloc_ep_res(fabric_conn_data_ptr fcd, struct fi_info *fi);
static int bind_ep_res(fabric_conn_data_ptr fcd);
static void free_ep_res(fabric_conn_data_ptr fcd);
static void
hand_to_pull_thread(CMtrans_services svc, fabric_client_data_ptr fabd,
msg_item_p msg);
static atom_t CM_FD = -1;
static atom_t CM_THIS_CONN_PORT = -1;
static atom_t CM_PEER_CONN_PORT = -1;
static atom_t CM_PEER_IP = -1;
static atom_t CM_PEER_HOSTNAME = -1;
static atom_t CM_PEER_LISTEN_PORT = -1;
static atom_t CM_NETWORK_POSTFIX = -1;
static atom_t CM_IP_PORT = -1;
static atom_t CM_IP_HOSTNAME = -1;
static atom_t CM_IP_ADDR = -1;
static atom_t CM_IP_INTERFACE = -1;
static atom_t CM_TRANSPORT = -1;
static int
check_host(hostname, sin_addr)
char *hostname;
void *sin_addr;
{
struct hostent *host_addr;
host_addr = gethostbyname(hostname);
if (host_addr == NULL) {
struct in_addr addr;
if (inet_aton(hostname, &addr) == 0) {
/*
* not translatable as a hostname or
* as a dot-style string IP address
*/
return 0;
}
assert(sizeof(int) == sizeof(struct in_addr));
*((int *) sin_addr) = *((int*) &addr);
} else {
memcpy(sin_addr, host_addr->h_addr, host_addr->h_length);
}
return 1;
}
static fabric_conn_data_ptr
create_fabric_conn_data(CMtrans_services svc)
{
fabric_conn_data_ptr fabric_conn_data = svc->malloc_func(sizeof(struct fabric_connection_data));
memset(fabric_conn_data, 0, sizeof(struct fabric_connection_data));
fabric_conn_data->remote_host = NULL;
fabric_conn_data->remote_contact_port = -1;
fabric_conn_data->fd = 0;
fabric_conn_data->read_buf = NULL;
fabric_conn_data->read_buffer_len = 0;
return fabric_conn_data;
}
static void
handle_scq_completion(struct fi_cq_data_entry *comp)
{
if (comp->flags & FI_READ) {
struct pull_record *this_pull =
(struct pull_record *)comp->op_context;
// printf("Got an FI_READ completion\n");
this_pull->status = PULL_COMPLETED;
}
if (comp->flags & FI_SEND) {
*(int*)comp->op_context = 1;
}
}
static int internal_write_piggyback(CMtrans_services svc,
fabric_conn_data_ptr fcd,
int length, struct iovec *iov, int iovcnt)
{
//this function is only called if length < piggyback
struct control_message *msg;
char *point;
int offset = msg_offset();
int i;
if(length >= PIGGYBACK)
{
//should never happen
return -1;
}
msg = malloc(offset + length);
memset(msg, 0, offset+length);
msg->type = msg_piggyback;
msg->u.pb.total_length = length + offset;
point = &msg->u.pb.body[0];
svc->trace_out(fcd->fabd->cm, "CMFABRIC sending piggyback msg of length %d,",
length);
for (i = 0; i < iovcnt; i++)
{
memcpy(point, iov[i].iov_base, iov[i].iov_len);
point += iov[i].iov_len;
}
{
memcpy(fcd->send_buf, msg, msg->u.pb.total_length);
int ret, sent = 0;
svc->trace_out(fcd->fabd->cm, "fi_send on conn_ep, length %d, send_buf %p\n", msg->u.pb.total_length, fcd->send_buf);
ret = fi_send(fcd->conn_ep, fcd->send_buf, msg->u.pb.total_length, fi_mr_desc(fcd->send_mr), 0, &sent);
if (ret) {
FT_PRINTERR("fi_send", ret);
return ret;
}
/* Read send queue */
do {
struct fi_cq_data_entry comp;
ret = fi_cq_read(fcd->scq, &comp, 1);
if (ret < 0 && ret != -FI_EAGAIN) {
FT_PRINTERR("fi_cq_read", ret);
cq_readerr(fcd->scq, " in internal write piggyback");
return ret;
}
if (ret == 1) handle_scq_completion(&comp);
} while (!sent);
}
free(msg);
return 0;
}
static int internal_write_response(CMtrans_services svc,
fabric_conn_data_ptr fcd,
int length,
int64_t request_ID)
{
struct control_message msg;
msg.type = msg_response;
msg.u.resp.max_length = length;
msg.u.resp.request_ID = request_ID;
memcpy(fcd->send_buf, &msg, sizeof(msg));
int ret, sent = 0;
svc->trace_out(fcd->fabd->cm, "fi_send for write response\n");
ret = fi_send(fcd->conn_ep, fcd->send_buf, sizeof(msg), fi_mr_desc(fcd->send_mr), 0, &sent);
if (ret) {
FT_PRINTERR("fi_send", ret);
return ret;
}
/* Read send queue */
do {
struct fi_cq_data_entry comp;
svc->trace_out(fcd->fabd->cm, "fi_cq_read for send completion in write response\n");
ret = fi_cq_read(fcd->scq, &comp, 1);
if (ret < 0 && ret != -FI_EAGAIN) {
FT_PRINTERR("fi_cq_read", ret);
cq_readerr(fcd->scq, " in internal write response");
return ret;
}
if (ret == 1) handle_scq_completion(&comp);
} while (!sent);
return 0;
}
static int internal_write_request(CMtrans_services svc,
fabric_conn_data_ptr fcd,
int length,
rinfo *request_info)
{
struct control_message *msg;
int ret, i, piggyback_prefix_vectors;
int size = sizeof(*msg) + request_info->iovcnt * sizeof(struct remote_entry);
msg = malloc(size);
msg->type = msg_request;
msg->u.req.length = length;
msg->u.req.iovcnt = request_info->iovcnt;
msg->u.req.request_ID = int64_from_ptr(request_info);
msg->u.req.piggyback_length = 0;
piggyback_prefix_vectors = 0;
for (i=0; i < request_info->iovcnt; i++) {
if (size + request_info->iov[i].iov_len < PIGGYBACK) {
size += request_info->iov[i].iov_len;
piggyback_prefix_vectors++;
} else {
break;
}
}
msg->u.req.iovcnt -= piggyback_prefix_vectors;
/* redo size */
size = sizeof(*msg) + (request_info->iovcnt-piggyback_prefix_vectors)
* sizeof(struct remote_entry);
for (i=0; i < piggyback_prefix_vectors; i++) {
msg = realloc(msg, size + request_info->iov[i].iov_len);
memcpy(((char*)msg) + size, request_info->iov[i].iov_base,
request_info->iov[i].iov_len);
size += request_info->iov[i].iov_len;
msg->u.req.piggyback_length += request_info->iov[i].iov_len;
}
/* handle remaining */
for (; i < request_info->iovcnt; i++) {
int j = i - piggyback_prefix_vectors;
msg->u.req.read_list[j].remote_addr = int64_from_ptr(request_info->iov[i].iov_base);
msg->u.req.read_list[j].length = request_info->iov[i].iov_len;
msg->u.req.read_list[j].rkey = fi_mr_key(request_info->mrlist[i]);
svc->trace_out(fcd->fabd->cm, "Adding source buffer[%d] %lx, len %d, key %lx\n",
i, msg->u.req.read_list[j].remote_addr, msg->u.req.read_list[j].length,
msg->u.req.read_list[j].rkey);
}
svc->trace_out(fcd->fabd->cm, "Doing internal write request, writing %d bytes", size);
memcpy(fcd->send_buf, msg, size);
int sent = 0;
ret = fi_send(fcd->conn_ep, fcd->send_buf, size, fi_mr_desc(fcd->send_mr), 0, &sent);
if (ret) {
FT_PRINTERR("fi_send", ret);
return ret;
}
/* Read send queue */
do {
struct fi_cq_data_entry comp;
ret = fi_cq_read(fcd->scq, &comp, 1);
if (ret < 0 && ret != -FI_EAGAIN) {
FT_PRINTERR("fi_cq_read", ret);
cq_readerr(fcd->scq, " in internal write request");
return ret;
}
if (ret == 1) handle_scq_completion(&comp);
} while (!sent);
return 0;
}
static int handle_response(CMtrans_services svc,
fabric_conn_data_ptr fcd,
struct control_message *msg)
{
//read back response
struct response *rep;
rinfo *write_request;
rep = &msg->u.resp;
write_request = ptr_from_int64(rep->request_ID);
if (rep->max_length == -1) {
fprintf(stderr, "WRITE FAILED, request %p\n", write_request);
return -1;
}
if (write_request->notify_func) {
(write_request->notify_func)( write_request->notify_client_data);
}
svc->wake_any_pending_write(fcd->conn);
return 0;
}
static mr_list
get_free_mr(fabric_client_data_ptr fabd, long length)
{
mr_list list, return_item = NULL;
pthread_mutex_lock(&fabd->pull_queue_mutex);
list = fabd->existing_mr_list;
while (list != NULL) {
if ((!list->in_use) && (list->buffer_length >= length)) {
list->in_use = 1;
return_item = list;
break;
}
list = list->next;
}
pthread_mutex_unlock(&fabd->pull_queue_mutex);
return return_item;
}
static void
add_mr_to_list(fabric_client_data_ptr fabd, mr_list mr_rec)
{
pthread_mutex_lock(&fabd->pull_queue_mutex);
mr_rec->fabd = fabd;
mr_rec->next = fabd->existing_mr_list;
fabd->existing_mr_list = mr_rec;
pthread_mutex_unlock(&fabd->pull_queue_mutex);
}
static void
free_func(void *mr_item_v)
{
fabric_client_data_ptr fabd;
mr_list list, mr_item = mr_item_v;
fabd = mr_item->fabd;
pthread_mutex_lock(&fabd->pull_queue_mutex);
list = fabd->existing_mr_list;
while (list != NULL) {
if (list == mr_item_v) {
list->in_use = 0;
break;
}
list = list->next;
}
if (list == NULL) {
fprintf(stderr, "libfabric MR list inconsistency in free_func\n");
}
pthread_mutex_unlock(&fabd->pull_queue_mutex);
}
static void
add_to_pull_queue(CMtrans_services svc, fabric_conn_data_ptr fcd,
struct control_message *msg)
{
int i;
struct request *req = &msg->u.req;
int header_size = sizeof(*msg) + req->iovcnt * sizeof(struct remote_entry);
msg_item_p msg_pull_item = calloc(1, sizeof(struct msg_item));
msg_pull_item->message_size = req->length;
msg_pull_item->buffer = malloc(req->piggyback_length);
msg_pull_item->cur_buffer_size = req->piggyback_length;
/* copy portion of msg that was piggybacked */
memcpy(msg_pull_item->buffer, (char*)msg + header_size, req->piggyback_length);
msg_pull_item->pull_count = req->iovcnt;
msg_pull_item->pulls = calloc(req->iovcnt, sizeof(struct pull_record));
msg_pull_item->conn_data = fcd;
msg_pull_item->request_ID = req->request_ID;
for (i = 0; i < msg_pull_item->pull_count; i++) {
msg_pull_item->pulls[i].parent = msg_pull_item;
msg_pull_item->pulls[i].remote = req->read_list[i];
}
hand_to_pull_thread(svc, fcd->fabd, msg_pull_item);
}
static int
perform_pull(CMtrans_services svc, fabric_conn_data_ptr fcd,
struct control_message *msg)
{
int ret;
int count;
int i;
char *ptr;
int header_size;
struct request *req;
void *buffer;
struct fid_mr *mr;
struct mr_list_item *mr_rec;
CMbuffer cb;
req = &msg->u.req;
svc->trace_out(fcd->fabd->cm, "In handle request, len is %ld, iovcnt %d, request_ID %lx, piggyback_length = %d\n",
req->length, req->iovcnt, req->request_ID, req->piggyback_length);
mr_rec = get_free_mr(fcd->fabd, req->length);
if (mr_rec == NULL) {
mr_rec = calloc(1, sizeof(*mr_rec));
buffer = malloc(req->length);
mr_rec->buffer_length = req->length;
mr_rec->buffer = buffer;
mr_rec->in_use = 1;
mr_rec->next = NULL;
svc->trace_out(fcd->fabd->cm, "fi_mr_reg, buff %p, size %ld with attrs REMOTE_READ,REMOTE_WRITE, SEND, RECV\n", buffer, req->length);
ret = fi_mr_reg(fcd->fabd->dom, buffer, req->length,
FI_REMOTE_READ | FI_REMOTE_WRITE | FI_SEND | FI_RECV,
0, 0, 0, &mr, NULL);
if(ret) {
FT_PRINTERR("fi_mr_reg", ret);
svc->trace_out(fcd->fabd->cm, "Failed to get memory\n");
internal_write_response(svc, fcd, -1, req->request_ID);
return ret;
}
mr_rec->mr = mr;
add_mr_to_list(fcd->fabd, mr_rec);
} else {
svc->trace_out(fcd->fabd->cm, "Reusing exiting MR buff %p, size %ld\n", mr_rec->buffer, mr_rec->buffer_length);
buffer = mr_rec->buffer;
mr = mr_rec->mr;
mr_rec->in_use = 1;
}
cb = svc->create_data_and_link_buffer(fcd->fabd->cm, buffer, req->length);
cb->return_callback = free_func;
cb->return_callback_data = (void*)mr_rec;
header_size = sizeof(*msg) + req->iovcnt * sizeof(struct remote_entry);
memcpy(cb->buffer, (char*)msg + header_size, req->piggyback_length);
ptr = cb->buffer + req->piggyback_length;
count = req->iovcnt;
for (i=0; i < req->iovcnt; i++) {
struct fi_cq_data_entry comp;
struct pull_record this_pull;
this_pull.status = PULL_SUBMITTED;
int call_count = 0;
svc->trace_out(fcd->fabd->cm, "fi_read, buffer %p, len %d, (keys.rkey %lx, keys.addr %lx)\n", ptr, req->read_list[i].length, req->read_list[i].rkey, req->read_list[i].remote_addr);
ssize_t ret = fi_read(fcd->conn_ep, ptr, req->read_list[i].length, fi_mr_desc(mr),
0, req->read_list[i].remote_addr, req->read_list[i].rkey, (void*)&this_pull);
ptr += req->read_list[i].length;
do {
/* Read send queue */
ret = fi_cq_read(fcd->scq, &comp, 1);
if (ret < 0 && ret != -FI_EAGAIN) {
FT_PRINTERR("fi_cq_read", ret);
cq_readerr(fcd->scq, "scq");
}
call_count++;
if (ret == 1) handle_scq_completion(&comp);
} while (this_pull.status != PULL_COMPLETED);
if (comp.flags & FI_READ) {
count--;
}
}
while (count != 0) {
struct fi_cq_data_entry comp;
ret = fi_cq_read(fcd->scq, &comp, 1);
if (ret == -FI_EAGAIN) {printf("Eagain\n"); continue;}
if (ret < 0 && ret != -FI_EAGAIN) {
if (ret == -FI_EAVAIL) {
cq_readerr(fcd->scq, "scq");
} else {
FT_PRINTERR("fi_cq_read", ret);
}
continue;
} else if (ret > 0) {
printf("Successful remote read, Completion size is %ld, data %p\n", comp.len, comp.buf);
}
if (ret == 1) handle_scq_completion(&comp);
if (comp.flags & FI_READ) {
count--;
}
}
fcd->read_buf = cb;
svc->trace_out(fcd->fabd->cm, "FIrst 16 bytes of receive buffer (len %d) are %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x \n", req->length, ((unsigned char*)cb->buffer)[0], ((unsigned char*)cb->buffer)[1], ((unsigned char*)cb->buffer)[2], ((unsigned char*)cb->buffer)[3], ((unsigned char*)cb->buffer)[4], ((unsigned char*)cb->buffer)[5], ((unsigned char*)cb->buffer)[6], ((unsigned char*)cb->buffer)[7], ((unsigned char*)cb->buffer)[8], ((unsigned char*)cb->buffer)[9], ((unsigned char*)cb->buffer)[10], ((unsigned char*)cb->buffer)[11], ((unsigned char*)cb->buffer)[12], ((unsigned char*)cb->buffer)[13], ((unsigned char*)cb->buffer)[14], ((unsigned char*)cb->buffer)[15]);
fcd->read_buffer_len = req->length;
svc->trace_out(fcd->fabd->cm, "CMFABRIC handle_request completed");
internal_write_response(svc, fcd, req->length, req->request_ID);
return 0;
}
static void
wake_pull_thread(fabric_client_data_ptr fabd)
{
static char buffer = 'W'; /* doesn't matter what we write */
if (!fabd->send_waitset) {
if (write(fabd->wake_write_fd, &buffer, 1) != 1) {
if (fabd->thread_should_run)
printf("Whoops, wake_pull_thread write failed\n");
}
} else {
/* send a cq wake */
}
}
static void
hand_to_pull_thread(CMtrans_services svc, fabric_client_data_ptr fabd,
msg_item_p msg)
{
struct msg_item *queue = fabd->pull_queue;
msg->next = NULL;
pthread_mutex_lock(&fabd->pull_queue_mutex);
if (fabd->pull_queue == NULL) {
fabd->pull_queue = msg;
} else {
while (queue->next) queue = queue->next;
queue->next = msg;
}
pthread_mutex_unlock(&fabd->pull_queue_mutex);
/* wake the thread if he's sleeping */
wake_pull_thread(fabd);
}
static void
return_completed_pull(CMtrans_services svc, fabric_client_data_ptr fabd,
msg_item_p msg)
{
pthread_mutex_lock(&fabd->pull_queue_mutex);
/* find msg in pull queue and take it out */
if (fabd->pull_queue == msg) {
fabd->pull_queue = msg->next;
msg->next = NULL;
} else {
struct msg_item *queue = fabd->pull_queue;
while (queue->next != msg) queue = queue->next;
queue->next = msg->next;
msg->next = NULL;
}
/* find add msg to completion queue */
if (fabd->completed_queue == NULL) {
fabd->completed_queue = msg;
} else {
struct msg_item *queue = fabd->completed_queue;
while (queue->next) queue = queue->next;
queue->next = msg;
}
svc->trace_out(fabd->cm, "Returning completed msg to the CM network thread\n");
pthread_mutex_unlock(&fabd->pull_queue_mutex);
/*
* this should wake the CM server thread and we'll check the
* pull completion queue in our handler
*/
fabd->svc->wake_comm_thread(fabd->cm);
}
static void
kill_thread(fabric_client_data_ptr fabd)
{
fabd->thread_should_run = 0;
if (fabd->thread_init) wake_pull_thread(fabd);
fabd->thread_init = 0;
}
static void
update_period_base(fabric_client_data_ptr fabd, struct timeval *now)
{
struct timeval next;
/* add period to base until it's greater than now.
* Return base before the last add so that base is just less than now.
*/
timeradd(&fabd->pull_schedule_base, &fabd->pull_schedule_period,
&next);
while(timercmp(&next, now, <)) {
fabd->pull_schedule_base = next;
timeradd(&fabd->pull_schedule_base, &fabd->pull_schedule_period,
&next);
}
}
static int
in_pull_period(fabric_client_data_ptr fabd, struct timeval *now)
{
int i = 0;
int period_count = 0;
struct timeval cur_offset, zero = {0,0};
timersub(now, &fabd->pull_schedule_base, &cur_offset);
update_period_base(fabd, now);
while (timercmp(&fabd->avail[period_count].duration, &zero, !=)) {
period_count++;
}
for (i = 0; i < period_count; i++) {
struct timeval end;
timeradd(&fabd->avail[i].offset, &fabd->avail[i].duration, &end);
if (timercmp(&cur_offset, &end, <) &&
timercmp(&cur_offset, &fabd->avail[i].offset, >)) return 1;
}
return 0;
}
static struct timeval
delay_until_wake(fabric_client_data_ptr fabd, struct timeval *now)
{
/* calculate the delay until the next pull period opens */
int i = 0;
int period_count = 0;
struct timeval cur_offset, zero = {0,0};
timersub(now, &fabd->pull_schedule_base, &cur_offset);
update_period_base(fabd, now);
while (timercmp(&fabd->avail[period_count].duration, &zero, !=)) {
period_count++;
}
/* the one we want is the next start time past now */
for (i = 0; i < period_count; i++) {
if (timercmp(&fabd->avail[i].offset, &cur_offset, >)) {
struct timeval ret;
timersub(&fabd->avail[i].offset, &cur_offset, &ret);
return ret;
}
}
/* we must have been past the last offset,
return the first offset of the next period */
struct timeval ret;
timeradd(&fabd->pull_schedule_period, &fabd->avail[0].offset, &ret);
timersub(&ret, &cur_offset, &ret);
return ret;
}
static void
add_completion_fd(fabric_client_data_ptr fabd, fabric_conn_data_ptr fcd)
{
if (fcd->sfd > fabd->nfds) {
fabd->fcd_array_by_sfd = realloc(fabd->fcd_array_by_sfd,
sizeof(fabd->fcd_array_by_sfd[0]) * fcd->sfd+1);
fabd->nfds = fcd->sfd;
}
fabd->fcd_array_by_sfd[fcd->sfd] = fcd;
fabd->cq_array = realloc(fabd->cq_array,
sizeof(fabd->cq_array[0]) * (fabd->ncqs+1));
fabd->cq_array[fabd->ncqs] = &fcd->scq->fid;
fabd->ncqs++;
FD_SET(fcd->sfd, &fabd->readset);
}
static void
remove_completion_fd(fabric_client_data_ptr fabd, fabric_conn_data_ptr fcd)
{
int i;
for (i = 0; i < fabd->ncqs; i++) {
if (fabd->cq_array[i] == &fcd->scq->fid) {
memcpy(&fabd->cq_array[i+1], &fabd->cq_array[i],
sizeof(fabd->cq_array[0]) * (fabd->ncqs - i - 1));
}
}
fabd->ncqs--;
FD_CLR(fcd->sfd, &fabd->readset);
}
#include <poll.h>
static int
can_do_something(fabric_client_data_ptr fabd)
{
CMtrans_services svc = fabd->svc;
int did_something = 0;
int i;
msg_item_p pull = fabd->pull_queue;
while (pull) {
msg_item_p next = pull->next;
fabric_conn_data_ptr fcd = pull->conn_data;
svc->trace_out(fabd->cm, "Got a pull message with buffer count %d, next %p\n",
pull->pull_count, pull->next);
if (!pull->mr_rec) {
int ret;
/* try to get a mr */
mr_list mr_rec = get_free_mr(fcd->fabd, pull->message_size);
char *buffer = NULL;
if (mr_rec == NULL) {
if (0 /*!allow_register_new_mr(fcd, pull->message_size)*/) {
pull = pull->next;
continue;
}
mr_rec = calloc(1, sizeof(*mr_rec));
buffer = malloc(pull->message_size);
mr_rec->buffer_length = pull->message_size;
mr_rec->buffer = buffer;
mr_rec->in_use = 1;
mr_rec->next = NULL;
svc->trace_out(fcd->fabd->cm, "fi_mr_reg, buff %p, size %ld with attrs REMOTE_READ,REMOTE_WRITE, SEND, RECV\n", buffer, pull->message_size);
ret = fi_mr_reg(fcd->fabd->dom, buffer, pull->message_size,
FI_REMOTE_READ | FI_REMOTE_WRITE | FI_SEND | FI_RECV,
0, 0, 0, &mr_rec->mr, NULL);
if(ret) {
FT_PRINTERR("fi_mr_reg", ret);
svc->trace_out(fcd->fabd->cm, "Failed to get memory\n");
internal_write_response(svc, fcd, -1, pull->request_ID);
return ret;
}
pull->mr = mr_rec->mr;
pull->mr_rec = mr_rec;
add_mr_to_list(fcd->fabd, mr_rec);
} else {
svc->trace_out(fcd->fabd->cm, "Reusing exiting MR buff %p, size %ld\n", mr_rec->buffer, mr_rec->buffer_length);
mr_rec->in_use = 1;
pull->mr_rec = mr_rec;
buffer = mr_rec->buffer;
pull->mr = mr_rec->mr;
}
/* piggyback part of msg is in old pull->buffer */
memcpy(buffer, pull->buffer, pull->cur_buffer_size);
free(pull->buffer);
pull->buffer = buffer;
/* setup local buffers, now that we have memory */
char *ptr = pull->buffer + pull->cur_buffer_size;
pull->cur_buffer_size = pull->message_size;
for ( i = 0; i < pull->pull_count; i++) {
pull->pulls[i].dest = ptr;
ptr += pull->pulls[i].remote.length;
}
pull->cur_buffer_size = mr_rec->buffer_length;
did_something = 1;
}
/* at this point we should have an MR and mr_rec */
for ( i = 0; i < pull->pull_count; i++) {
if (pull->pulls[i].status == PULL_UNSUBMITTED) {
// struct fi_cq_data_entry comp;
struct remote_entry *remote = &pull->pulls[i].remote;
struct pull_record *this_pull = &pull->pulls[i];
if (0 /* can't do more pulls for some reason */) {
continue;
}
svc->trace_out(fcd->fabd->cm, "fi_read, buffer %p, len %d, (keys.rkey %lx, keys.addr %lx)\n", this_pull->dest, remote->length, remote->rkey, remote->remote_addr);
// struct pollfd poll_list[1];
// poll_list[0].fd = fcd->sfd;
// poll_list[0].events = POLLIN|POLLPRI;
// int pret = poll(&poll_list[0], (unsigned long)1, 0);
// printf("Before read poll list ret %d, revents = %x\n", pret, poll_list[0].revents);
ssize_t ret = fi_read(fcd->conn_ep, this_pull->dest,
remote->length, fi_mr_desc(pull->mr),
0, remote->remote_addr, remote->rkey,
(void*)this_pull);
if (ret) continue;
this_pull->status = PULL_SUBMITTED;