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50#include <linux/module.h>
51#include <linux/slab.h>
52#include <linux/seq_file.h>
53#include <linux/sunrpc/addr.h>
54
55#include "xprt_rdma.h"
56
57#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
58# define RPCDBG_FACILITY RPCDBG_TRANS
59#endif
60
61
62
63
64
65static unsigned int xprt_rdma_slot_table_entries = RPCRDMA_DEF_SLOT_TABLE;
66unsigned int xprt_rdma_max_inline_read = RPCRDMA_DEF_INLINE;
67static unsigned int xprt_rdma_max_inline_write = RPCRDMA_DEF_INLINE;
68static unsigned int xprt_rdma_inline_write_padding;
69static unsigned int xprt_rdma_memreg_strategy = RPCRDMA_FRMR;
70 int xprt_rdma_pad_optimize = 1;
71
72#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
73
74static unsigned int min_slot_table_size = RPCRDMA_MIN_SLOT_TABLE;
75static unsigned int max_slot_table_size = RPCRDMA_MAX_SLOT_TABLE;
76static unsigned int zero;
77static unsigned int max_padding = PAGE_SIZE;
78static unsigned int min_memreg = RPCRDMA_BOUNCEBUFFERS;
79static unsigned int max_memreg = RPCRDMA_LAST - 1;
80
81static struct ctl_table_header *sunrpc_table_header;
82
83static struct ctl_table xr_tunables_table[] = {
84 {
85 .procname = "rdma_slot_table_entries",
86 .data = &xprt_rdma_slot_table_entries,
87 .maxlen = sizeof(unsigned int),
88 .mode = 0644,
89 .proc_handler = proc_dointvec_minmax,
90 .extra1 = &min_slot_table_size,
91 .extra2 = &max_slot_table_size
92 },
93 {
94 .procname = "rdma_max_inline_read",
95 .data = &xprt_rdma_max_inline_read,
96 .maxlen = sizeof(unsigned int),
97 .mode = 0644,
98 .proc_handler = proc_dointvec,
99 },
100 {
101 .procname = "rdma_max_inline_write",
102 .data = &xprt_rdma_max_inline_write,
103 .maxlen = sizeof(unsigned int),
104 .mode = 0644,
105 .proc_handler = proc_dointvec,
106 },
107 {
108 .procname = "rdma_inline_write_padding",
109 .data = &xprt_rdma_inline_write_padding,
110 .maxlen = sizeof(unsigned int),
111 .mode = 0644,
112 .proc_handler = proc_dointvec_minmax,
113 .extra1 = &zero,
114 .extra2 = &max_padding,
115 },
116 {
117 .procname = "rdma_memreg_strategy",
118 .data = &xprt_rdma_memreg_strategy,
119 .maxlen = sizeof(unsigned int),
120 .mode = 0644,
121 .proc_handler = proc_dointvec_minmax,
122 .extra1 = &min_memreg,
123 .extra2 = &max_memreg,
124 },
125 {
126 .procname = "rdma_pad_optimize",
127 .data = &xprt_rdma_pad_optimize,
128 .maxlen = sizeof(unsigned int),
129 .mode = 0644,
130 .proc_handler = proc_dointvec,
131 },
132 { },
133};
134
135static struct ctl_table sunrpc_table[] = {
136 {
137 .procname = "sunrpc",
138 .mode = 0555,
139 .child = xr_tunables_table
140 },
141 { },
142};
143
144#endif
145
146static struct rpc_xprt_ops xprt_rdma_procs;
147
148static void
149xprt_rdma_format_addresses4(struct rpc_xprt *xprt, struct sockaddr *sap)
150{
151 struct sockaddr_in *sin = (struct sockaddr_in *)sap;
152 char buf[20];
153
154 snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
155 xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
156
157 xprt->address_strings[RPC_DISPLAY_NETID] = RPCBIND_NETID_RDMA;
158}
159
160static void
161xprt_rdma_format_addresses6(struct rpc_xprt *xprt, struct sockaddr *sap)
162{
163 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
164 char buf[40];
165
166 snprintf(buf, sizeof(buf), "%pi6", &sin6->sin6_addr);
167 xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
168
169 xprt->address_strings[RPC_DISPLAY_NETID] = RPCBIND_NETID_RDMA6;
170}
171
172void
173xprt_rdma_format_addresses(struct rpc_xprt *xprt, struct sockaddr *sap)
174{
175 char buf[128];
176
177 switch (sap->sa_family) {
178 case AF_INET:
179 xprt_rdma_format_addresses4(xprt, sap);
180 break;
181 case AF_INET6:
182 xprt_rdma_format_addresses6(xprt, sap);
183 break;
184 default:
185 pr_err("rpcrdma: Unrecognized address family\n");
186 return;
187 }
188
189 (void)rpc_ntop(sap, buf, sizeof(buf));
190 xprt->address_strings[RPC_DISPLAY_ADDR] = kstrdup(buf, GFP_KERNEL);
191
192 snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
193 xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);
194
195 snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
196 xprt->address_strings[RPC_DISPLAY_HEX_PORT] = kstrdup(buf, GFP_KERNEL);
197
198 xprt->address_strings[RPC_DISPLAY_PROTO] = "rdma";
199}
200
201void
202xprt_rdma_free_addresses(struct rpc_xprt *xprt)
203{
204 unsigned int i;
205
206 for (i = 0; i < RPC_DISPLAY_MAX; i++)
207 switch (i) {
208 case RPC_DISPLAY_PROTO:
209 case RPC_DISPLAY_NETID:
210 continue;
211 default:
212 kfree(xprt->address_strings[i]);
213 }
214}
215
216static void
217xprt_rdma_connect_worker(struct work_struct *work)
218{
219 struct rpcrdma_xprt *r_xprt = container_of(work, struct rpcrdma_xprt,
220 rx_connect_worker.work);
221 struct rpc_xprt *xprt = &r_xprt->rx_xprt;
222 int rc = 0;
223
224 xprt_clear_connected(xprt);
225
226 dprintk("RPC: %s: %sconnect\n", __func__,
227 r_xprt->rx_ep.rep_connected != 0 ? "re" : "");
228 rc = rpcrdma_ep_connect(&r_xprt->rx_ep, &r_xprt->rx_ia);
229 if (rc)
230 xprt_wake_pending_tasks(xprt, rc);
231
232 dprintk("RPC: %s: exit\n", __func__);
233 xprt_clear_connecting(xprt);
234}
235
236static void
237xprt_rdma_inject_disconnect(struct rpc_xprt *xprt)
238{
239 struct rpcrdma_xprt *r_xprt = container_of(xprt, struct rpcrdma_xprt,
240 rx_xprt);
241
242 pr_info("rpcrdma: injecting transport disconnect on xprt=%p\n", xprt);
243 rdma_disconnect(r_xprt->rx_ia.ri_id);
244}
245
246
247
248
249
250
251
252
253
254
255
256
257static void
258xprt_rdma_destroy(struct rpc_xprt *xprt)
259{
260 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
261
262 dprintk("RPC: %s: called\n", __func__);
263
264 cancel_delayed_work_sync(&r_xprt->rx_connect_worker);
265
266 xprt_clear_connected(xprt);
267
268 rpcrdma_ep_destroy(&r_xprt->rx_ep, &r_xprt->rx_ia);
269 rpcrdma_buffer_destroy(&r_xprt->rx_buf);
270 rpcrdma_ia_close(&r_xprt->rx_ia);
271
272 xprt_rdma_free_addresses(xprt);
273
274 xprt_free(xprt);
275
276 dprintk("RPC: %s: returning\n", __func__);
277
278 module_put(THIS_MODULE);
279}
280
281static const struct rpc_timeout xprt_rdma_default_timeout = {
282 .to_initval = 60 * HZ,
283 .to_maxval = 60 * HZ,
284};
285
286
287
288
289
290
291static struct rpc_xprt *
292xprt_setup_rdma(struct xprt_create *args)
293{
294 struct rpcrdma_create_data_internal cdata;
295 struct rpc_xprt *xprt;
296 struct rpcrdma_xprt *new_xprt;
297 struct rpcrdma_ep *new_ep;
298 struct sockaddr *sap;
299 int rc;
300
301 if (args->addrlen > sizeof(xprt->addr)) {
302 dprintk("RPC: %s: address too large\n", __func__);
303 return ERR_PTR(-EBADF);
304 }
305
306 xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt),
307 xprt_rdma_slot_table_entries,
308 xprt_rdma_slot_table_entries);
309 if (xprt == NULL) {
310 dprintk("RPC: %s: couldn't allocate rpcrdma_xprt\n",
311 __func__);
312 return ERR_PTR(-ENOMEM);
313 }
314
315
316 xprt->timeout = &xprt_rdma_default_timeout;
317 xprt->bind_timeout = RPCRDMA_BIND_TO;
318 xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
319 xprt->idle_timeout = RPCRDMA_IDLE_DISC_TO;
320
321 xprt->resvport = 0;
322 xprt->tsh_size = 0;
323 xprt->ops = &xprt_rdma_procs;
324
325
326
327
328
329 sap = (struct sockaddr *)&cdata.addr;
330 memcpy(sap, args->dstaddr, args->addrlen);
331
332
333
334 xprt->prot = IPPROTO_TCP;
335 xprt->addrlen = args->addrlen;
336 memcpy(&xprt->addr, sap, xprt->addrlen);
337
338 if (rpc_get_port(sap))
339 xprt_set_bound(xprt);
340
341 cdata.max_requests = xprt->max_reqs;
342
343 cdata.rsize = RPCRDMA_MAX_SEGS * PAGE_SIZE;
344 cdata.wsize = RPCRDMA_MAX_SEGS * PAGE_SIZE;
345
346 cdata.inline_wsize = xprt_rdma_max_inline_write;
347 if (cdata.inline_wsize > cdata.wsize)
348 cdata.inline_wsize = cdata.wsize;
349
350 cdata.inline_rsize = xprt_rdma_max_inline_read;
351 if (cdata.inline_rsize > cdata.rsize)
352 cdata.inline_rsize = cdata.rsize;
353
354 cdata.padding = xprt_rdma_inline_write_padding;
355
356
357
358
359
360
361
362
363 new_xprt = rpcx_to_rdmax(xprt);
364
365 rc = rpcrdma_ia_open(new_xprt, sap, xprt_rdma_memreg_strategy);
366 if (rc)
367 goto out1;
368
369
370
371
372 new_xprt->rx_data = cdata;
373 new_ep = &new_xprt->rx_ep;
374 new_ep->rep_remote_addr = cdata.addr;
375
376 rc = rpcrdma_ep_create(&new_xprt->rx_ep,
377 &new_xprt->rx_ia, &new_xprt->rx_data);
378 if (rc)
379 goto out2;
380
381
382
383
384
385
386 rc = rpcrdma_buffer_create(new_xprt);
387 if (rc)
388 goto out3;
389
390
391
392
393
394
395 INIT_DELAYED_WORK(&new_xprt->rx_connect_worker,
396 xprt_rdma_connect_worker);
397
398 xprt_rdma_format_addresses(xprt, sap);
399 xprt->max_payload = new_xprt->rx_ia.ri_ops->ro_maxpages(new_xprt);
400 if (xprt->max_payload == 0)
401 goto out4;
402 xprt->max_payload <<= PAGE_SHIFT;
403 dprintk("RPC: %s: transport data payload maximum: %zu bytes\n",
404 __func__, xprt->max_payload);
405
406 if (!try_module_get(THIS_MODULE))
407 goto out4;
408
409 dprintk("RPC: %s: %s:%s\n", __func__,
410 xprt->address_strings[RPC_DISPLAY_ADDR],
411 xprt->address_strings[RPC_DISPLAY_PORT]);
412 return xprt;
413
414out4:
415 xprt_rdma_free_addresses(xprt);
416 rc = -EINVAL;
417out3:
418 rpcrdma_ep_destroy(new_ep, &new_xprt->rx_ia);
419out2:
420 rpcrdma_ia_close(&new_xprt->rx_ia);
421out1:
422 xprt_free(xprt);
423 return ERR_PTR(rc);
424}
425
426
427
428
429static void
430xprt_rdma_close(struct rpc_xprt *xprt)
431{
432 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
433
434 dprintk("RPC: %s: closing\n", __func__);
435 if (r_xprt->rx_ep.rep_connected > 0)
436 xprt->reestablish_timeout = 0;
437 xprt_disconnect_done(xprt);
438 rpcrdma_ep_disconnect(&r_xprt->rx_ep, &r_xprt->rx_ia);
439}
440
441static void
442xprt_rdma_set_port(struct rpc_xprt *xprt, u16 port)
443{
444 struct sockaddr_in *sap;
445
446 sap = (struct sockaddr_in *)&xprt->addr;
447 sap->sin_port = htons(port);
448 sap = (struct sockaddr_in *)&rpcx_to_rdmad(xprt).addr;
449 sap->sin_port = htons(port);
450 dprintk("RPC: %s: %u\n", __func__, port);
451}
452
453static void
454xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task)
455{
456 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
457
458 if (r_xprt->rx_ep.rep_connected != 0) {
459
460 schedule_delayed_work(&r_xprt->rx_connect_worker,
461 xprt->reestablish_timeout);
462 xprt->reestablish_timeout <<= 1;
463 if (xprt->reestablish_timeout > RPCRDMA_MAX_REEST_TO)
464 xprt->reestablish_timeout = RPCRDMA_MAX_REEST_TO;
465 else if (xprt->reestablish_timeout < RPCRDMA_INIT_REEST_TO)
466 xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
467 } else {
468 schedule_delayed_work(&r_xprt->rx_connect_worker, 0);
469 if (!RPC_IS_ASYNC(task))
470 flush_delayed_work(&r_xprt->rx_connect_worker);
471 }
472}
473
474
475
476
477
478
479
480
481
482
483static void *
484xprt_rdma_allocate(struct rpc_task *task, size_t size)
485{
486 struct rpc_xprt *xprt = task->tk_rqstp->rq_xprt;
487 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
488 struct rpcrdma_regbuf *rb;
489 struct rpcrdma_req *req;
490 size_t min_size;
491 gfp_t flags;
492
493 req = rpcrdma_buffer_get(&r_xprt->rx_buf);
494 if (req == NULL)
495 return NULL;
496
497 flags = RPCRDMA_DEF_GFP;
498 if (RPC_IS_SWAPPER(task))
499 flags = __GFP_MEMALLOC | GFP_NOWAIT | __GFP_NOWARN;
500
501 if (req->rl_rdmabuf == NULL)
502 goto out_rdmabuf;
503 if (req->rl_sendbuf == NULL)
504 goto out_sendbuf;
505 if (size > req->rl_sendbuf->rg_size)
506 goto out_sendbuf;
507
508out:
509 dprintk("RPC: %s: size %zd, request 0x%p\n", __func__, size, req);
510 req->rl_connect_cookie = 0;
511 return req->rl_sendbuf->rg_base;
512
513out_rdmabuf:
514 min_size = RPCRDMA_INLINE_WRITE_THRESHOLD(task->tk_rqstp);
515 rb = rpcrdma_alloc_regbuf(&r_xprt->rx_ia, min_size, flags);
516 if (IS_ERR(rb))
517 goto out_fail;
518 req->rl_rdmabuf = rb;
519
520out_sendbuf:
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537 min_size = RPCRDMA_INLINE_READ_THRESHOLD(task->tk_rqstp);
538 min_size += RPCRDMA_INLINE_WRITE_THRESHOLD(task->tk_rqstp);
539 if (size < min_size)
540 size = min_size;
541
542 rb = rpcrdma_alloc_regbuf(&r_xprt->rx_ia, size, flags);
543 if (IS_ERR(rb))
544 goto out_fail;
545 rb->rg_owner = req;
546
547 r_xprt->rx_stats.hardway_register_count += size;
548 rpcrdma_free_regbuf(&r_xprt->rx_ia, req->rl_sendbuf);
549 req->rl_sendbuf = rb;
550 goto out;
551
552out_fail:
553 rpcrdma_buffer_put(req);
554 r_xprt->rx_stats.failed_marshal_count++;
555 return NULL;
556}
557
558
559
560
561static void
562xprt_rdma_free(void *buffer)
563{
564 struct rpcrdma_req *req;
565 struct rpcrdma_xprt *r_xprt;
566 struct rpcrdma_regbuf *rb;
567 int i;
568
569 if (buffer == NULL)
570 return;
571
572 rb = container_of(buffer, struct rpcrdma_regbuf, rg_base[0]);
573 req = rb->rg_owner;
574 if (req->rl_backchannel)
575 return;
576
577 r_xprt = container_of(req->rl_buffer, struct rpcrdma_xprt, rx_buf);
578
579 dprintk("RPC: %s: called on 0x%p\n", __func__, req->rl_reply);
580
581 for (i = 0; req->rl_nchunks;) {
582 --req->rl_nchunks;
583 i += r_xprt->rx_ia.ri_ops->ro_unmap(r_xprt,
584 &req->rl_segments[i]);
585 }
586
587 rpcrdma_buffer_put(req);
588}
589
590
591
592
593
594
595
596
597
598
599
600
601static int
602xprt_rdma_send_request(struct rpc_task *task)
603{
604 struct rpc_rqst *rqst = task->tk_rqstp;
605 struct rpc_xprt *xprt = rqst->rq_xprt;
606 struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
607 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
608 int rc = 0;
609
610 rc = rpcrdma_marshal_req(rqst);
611 if (rc < 0)
612 goto failed_marshal;
613
614 if (req->rl_reply == NULL)
615 rpcrdma_recv_buffer_get(req);
616
617
618 if (req->rl_connect_cookie == xprt->connect_cookie)
619 goto drop_connection;
620 req->rl_connect_cookie = xprt->connect_cookie;
621
622 if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req))
623 goto drop_connection;
624
625 rqst->rq_xmit_bytes_sent += rqst->rq_snd_buf.len;
626 rqst->rq_bytes_sent = 0;
627 return 0;
628
629failed_marshal:
630 r_xprt->rx_stats.failed_marshal_count++;
631 dprintk("RPC: %s: rpcrdma_marshal_req failed, status %i\n",
632 __func__, rc);
633 if (rc == -EIO)
634 return -EIO;
635drop_connection:
636 xprt_disconnect_done(xprt);
637 return -ENOTCONN;
638}
639
640void xprt_rdma_print_stats(struct rpc_xprt *xprt, struct seq_file *seq)
641{
642 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
643 long idle_time = 0;
644
645 if (xprt_connected(xprt))
646 idle_time = (long)(jiffies - xprt->last_used) / HZ;
647
648 seq_puts(seq, "\txprt:\trdma ");
649 seq_printf(seq, "%u %lu %lu %lu %ld %lu %lu %lu %llu %llu ",
650 0,
651 xprt->stat.bind_count,
652 xprt->stat.connect_count,
653 xprt->stat.connect_time,
654 idle_time,
655 xprt->stat.sends,
656 xprt->stat.recvs,
657 xprt->stat.bad_xids,
658 xprt->stat.req_u,
659 xprt->stat.bklog_u);
660 seq_printf(seq, "%lu %lu %lu %llu %llu %llu %llu %lu %lu %lu %lu\n",
661 r_xprt->rx_stats.read_chunk_count,
662 r_xprt->rx_stats.write_chunk_count,
663 r_xprt->rx_stats.reply_chunk_count,
664 r_xprt->rx_stats.total_rdma_request,
665 r_xprt->rx_stats.total_rdma_reply,
666 r_xprt->rx_stats.pullup_copy_count,
667 r_xprt->rx_stats.fixup_copy_count,
668 r_xprt->rx_stats.hardway_register_count,
669 r_xprt->rx_stats.failed_marshal_count,
670 r_xprt->rx_stats.bad_reply_count,
671 r_xprt->rx_stats.nomsg_call_count);
672}
673
674static int
675xprt_rdma_enable_swap(struct rpc_xprt *xprt)
676{
677 return 0;
678}
679
680static void
681xprt_rdma_disable_swap(struct rpc_xprt *xprt)
682{
683}
684
685
686
687
688
689static struct rpc_xprt_ops xprt_rdma_procs = {
690 .reserve_xprt = xprt_reserve_xprt_cong,
691 .release_xprt = xprt_release_xprt_cong,
692 .alloc_slot = xprt_alloc_slot,
693 .release_request = xprt_release_rqst_cong,
694 .set_retrans_timeout = xprt_set_retrans_timeout_def,
695 .rpcbind = rpcb_getport_async,
696 .set_port = xprt_rdma_set_port,
697 .connect = xprt_rdma_connect,
698 .buf_alloc = xprt_rdma_allocate,
699 .buf_free = xprt_rdma_free,
700 .send_request = xprt_rdma_send_request,
701 .close = xprt_rdma_close,
702 .destroy = xprt_rdma_destroy,
703 .print_stats = xprt_rdma_print_stats,
704 .enable_swap = xprt_rdma_enable_swap,
705 .disable_swap = xprt_rdma_disable_swap,
706 .inject_disconnect = xprt_rdma_inject_disconnect,
707#if defined(CONFIG_SUNRPC_BACKCHANNEL)
708 .bc_setup = xprt_rdma_bc_setup,
709 .bc_up = xprt_rdma_bc_up,
710 .bc_free_rqst = xprt_rdma_bc_free_rqst,
711 .bc_destroy = xprt_rdma_bc_destroy,
712#endif
713};
714
715static struct xprt_class xprt_rdma = {
716 .list = LIST_HEAD_INIT(xprt_rdma.list),
717 .name = "rdma",
718 .owner = THIS_MODULE,
719 .ident = XPRT_TRANSPORT_RDMA,
720 .setup = xprt_setup_rdma,
721};
722
723void xprt_rdma_cleanup(void)
724{
725 int rc;
726
727 dprintk("RPCRDMA Module Removed, deregister RPC RDMA transport\n");
728#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
729 if (sunrpc_table_header) {
730 unregister_sysctl_table(sunrpc_table_header);
731 sunrpc_table_header = NULL;
732 }
733#endif
734 rc = xprt_unregister_transport(&xprt_rdma);
735 if (rc)
736 dprintk("RPC: %s: xprt_unregister returned %i\n",
737 __func__, rc);
738
739 rpcrdma_destroy_wq();
740 frwr_destroy_recovery_wq();
741
742 rc = xprt_unregister_transport(&xprt_rdma_bc);
743 if (rc)
744 dprintk("RPC: %s: xprt_unregister(bc) returned %i\n",
745 __func__, rc);
746}
747
748int xprt_rdma_init(void)
749{
750 int rc;
751
752 rc = frwr_alloc_recovery_wq();
753 if (rc)
754 return rc;
755
756 rc = rpcrdma_alloc_wq();
757 if (rc) {
758 frwr_destroy_recovery_wq();
759 return rc;
760 }
761
762 rc = xprt_register_transport(&xprt_rdma);
763 if (rc) {
764 rpcrdma_destroy_wq();
765 frwr_destroy_recovery_wq();
766 return rc;
767 }
768
769 rc = xprt_register_transport(&xprt_rdma_bc);
770 if (rc) {
771 xprt_unregister_transport(&xprt_rdma);
772 rpcrdma_destroy_wq();
773 frwr_destroy_recovery_wq();
774 return rc;
775 }
776
777 dprintk("RPCRDMA Module Init, register RPC RDMA transport\n");
778
779 dprintk("Defaults:\n");
780 dprintk("\tSlots %d\n"
781 "\tMaxInlineRead %d\n\tMaxInlineWrite %d\n",
782 xprt_rdma_slot_table_entries,
783 xprt_rdma_max_inline_read, xprt_rdma_max_inline_write);
784 dprintk("\tPadding %d\n\tMemreg %d\n",
785 xprt_rdma_inline_write_padding, xprt_rdma_memreg_strategy);
786
787#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
788 if (!sunrpc_table_header)
789 sunrpc_table_header = register_sysctl_table(sunrpc_table);
790#endif
791 return 0;
792}
793