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52#include <linux/module.h>
53#include <linux/slab.h>
54#include <linux/seq_file.h>
55#include <linux/smp.h>
56
57#include <linux/sunrpc/addr.h>
58#include <linux/sunrpc/svc_rdma.h>
59
60#include "xprt_rdma.h"
61#include <trace/events/rpcrdma.h>
62
63#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
64# define RPCDBG_FACILITY RPCDBG_TRANS
65#endif
66
67
68
69
70
71unsigned int xprt_rdma_slot_table_entries = RPCRDMA_DEF_SLOT_TABLE;
72unsigned int xprt_rdma_max_inline_read = RPCRDMA_DEF_INLINE;
73unsigned int xprt_rdma_max_inline_write = RPCRDMA_DEF_INLINE;
74unsigned int xprt_rdma_memreg_strategy = RPCRDMA_FRWR;
75int xprt_rdma_pad_optimize;
76
77#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
78
79static unsigned int min_slot_table_size = RPCRDMA_MIN_SLOT_TABLE;
80static unsigned int max_slot_table_size = RPCRDMA_MAX_SLOT_TABLE;
81static unsigned int min_inline_size = RPCRDMA_MIN_INLINE;
82static unsigned int max_inline_size = RPCRDMA_MAX_INLINE;
83static unsigned int zero;
84static unsigned int max_padding = PAGE_SIZE;
85static unsigned int min_memreg = RPCRDMA_BOUNCEBUFFERS;
86static unsigned int max_memreg = RPCRDMA_LAST - 1;
87static unsigned int dummy;
88
89static struct ctl_table_header *sunrpc_table_header;
90
91static struct ctl_table xr_tunables_table[] = {
92 {
93 .procname = "rdma_slot_table_entries",
94 .data = &xprt_rdma_slot_table_entries,
95 .maxlen = sizeof(unsigned int),
96 .mode = 0644,
97 .proc_handler = proc_dointvec_minmax,
98 .extra1 = &min_slot_table_size,
99 .extra2 = &max_slot_table_size
100 },
101 {
102 .procname = "rdma_max_inline_read",
103 .data = &xprt_rdma_max_inline_read,
104 .maxlen = sizeof(unsigned int),
105 .mode = 0644,
106 .proc_handler = proc_dointvec_minmax,
107 .extra1 = &min_inline_size,
108 .extra2 = &max_inline_size,
109 },
110 {
111 .procname = "rdma_max_inline_write",
112 .data = &xprt_rdma_max_inline_write,
113 .maxlen = sizeof(unsigned int),
114 .mode = 0644,
115 .proc_handler = proc_dointvec_minmax,
116 .extra1 = &min_inline_size,
117 .extra2 = &max_inline_size,
118 },
119 {
120 .procname = "rdma_inline_write_padding",
121 .data = &dummy,
122 .maxlen = sizeof(unsigned int),
123 .mode = 0644,
124 .proc_handler = proc_dointvec_minmax,
125 .extra1 = &zero,
126 .extra2 = &max_padding,
127 },
128 {
129 .procname = "rdma_memreg_strategy",
130 .data = &xprt_rdma_memreg_strategy,
131 .maxlen = sizeof(unsigned int),
132 .mode = 0644,
133 .proc_handler = proc_dointvec_minmax,
134 .extra1 = &min_memreg,
135 .extra2 = &max_memreg,
136 },
137 {
138 .procname = "rdma_pad_optimize",
139 .data = &xprt_rdma_pad_optimize,
140 .maxlen = sizeof(unsigned int),
141 .mode = 0644,
142 .proc_handler = proc_dointvec,
143 },
144 { },
145};
146
147static struct ctl_table sunrpc_table[] = {
148 {
149 .procname = "sunrpc",
150 .mode = 0555,
151 .child = xr_tunables_table
152 },
153 { },
154};
155
156#endif
157
158static const struct rpc_xprt_ops xprt_rdma_procs;
159
160static void
161xprt_rdma_format_addresses4(struct rpc_xprt *xprt, struct sockaddr *sap)
162{
163 struct sockaddr_in *sin = (struct sockaddr_in *)sap;
164 char buf[20];
165
166 snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
167 xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
168
169 xprt->address_strings[RPC_DISPLAY_NETID] = RPCBIND_NETID_RDMA;
170}
171
172static void
173xprt_rdma_format_addresses6(struct rpc_xprt *xprt, struct sockaddr *sap)
174{
175 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
176 char buf[40];
177
178 snprintf(buf, sizeof(buf), "%pi6", &sin6->sin6_addr);
179 xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
180
181 xprt->address_strings[RPC_DISPLAY_NETID] = RPCBIND_NETID_RDMA6;
182}
183
184void
185xprt_rdma_format_addresses(struct rpc_xprt *xprt, struct sockaddr *sap)
186{
187 char buf[128];
188
189 switch (sap->sa_family) {
190 case AF_INET:
191 xprt_rdma_format_addresses4(xprt, sap);
192 break;
193 case AF_INET6:
194 xprt_rdma_format_addresses6(xprt, sap);
195 break;
196 default:
197 pr_err("rpcrdma: Unrecognized address family\n");
198 return;
199 }
200
201 (void)rpc_ntop(sap, buf, sizeof(buf));
202 xprt->address_strings[RPC_DISPLAY_ADDR] = kstrdup(buf, GFP_KERNEL);
203
204 snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
205 xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);
206
207 snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
208 xprt->address_strings[RPC_DISPLAY_HEX_PORT] = kstrdup(buf, GFP_KERNEL);
209
210 xprt->address_strings[RPC_DISPLAY_PROTO] = "rdma";
211}
212
213void
214xprt_rdma_free_addresses(struct rpc_xprt *xprt)
215{
216 unsigned int i;
217
218 for (i = 0; i < RPC_DISPLAY_MAX; i++)
219 switch (i) {
220 case RPC_DISPLAY_PROTO:
221 case RPC_DISPLAY_NETID:
222 continue;
223 default:
224 kfree(xprt->address_strings[i]);
225 }
226}
227
228
229
230
231
232
233
234
235
236static void
237xprt_rdma_connect_worker(struct work_struct *work)
238{
239 struct rpcrdma_xprt *r_xprt = container_of(work, struct rpcrdma_xprt,
240 rx_connect_worker.work);
241 struct rpc_xprt *xprt = &r_xprt->rx_xprt;
242 int rc;
243
244 rc = rpcrdma_ep_connect(&r_xprt->rx_ep, &r_xprt->rx_ia);
245 xprt_clear_connecting(xprt);
246 if (r_xprt->rx_ep.rep_connected > 0) {
247 if (!xprt_test_and_set_connected(xprt)) {
248 xprt->stat.connect_count++;
249 xprt->stat.connect_time += (long)jiffies -
250 xprt->stat.connect_start;
251 xprt_wake_pending_tasks(xprt, -EAGAIN);
252 }
253 } else {
254 if (xprt_test_and_clear_connected(xprt))
255 xprt_wake_pending_tasks(xprt, rc);
256 }
257}
258
259
260
261
262
263
264
265
266static void
267xprt_rdma_inject_disconnect(struct rpc_xprt *xprt)
268{
269 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
270
271 trace_xprtrdma_op_inject_dsc(r_xprt);
272 rdma_disconnect(r_xprt->rx_ia.ri_id);
273}
274
275
276
277
278
279
280
281
282static void
283xprt_rdma_destroy(struct rpc_xprt *xprt)
284{
285 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
286
287 trace_xprtrdma_op_destroy(r_xprt);
288
289 cancel_delayed_work_sync(&r_xprt->rx_connect_worker);
290
291 rpcrdma_ep_destroy(r_xprt);
292 rpcrdma_buffer_destroy(&r_xprt->rx_buf);
293 rpcrdma_ia_close(&r_xprt->rx_ia);
294
295 xprt_rdma_free_addresses(xprt);
296 xprt_free(xprt);
297
298 module_put(THIS_MODULE);
299}
300
301static const struct rpc_timeout xprt_rdma_default_timeout = {
302 .to_initval = 60 * HZ,
303 .to_maxval = 60 * HZ,
304};
305
306
307
308
309
310
311static struct rpc_xprt *
312xprt_setup_rdma(struct xprt_create *args)
313{
314 struct rpc_xprt *xprt;
315 struct rpcrdma_xprt *new_xprt;
316 struct sockaddr *sap;
317 int rc;
318
319 if (args->addrlen > sizeof(xprt->addr))
320 return ERR_PTR(-EBADF);
321
322 xprt = xprt_alloc(args->net, sizeof(struct rpcrdma_xprt), 0, 0);
323 if (!xprt)
324 return ERR_PTR(-ENOMEM);
325
326
327 xprt->timeout = &xprt_rdma_default_timeout;
328 xprt->bind_timeout = RPCRDMA_BIND_TO;
329 xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
330 xprt->idle_timeout = RPCRDMA_IDLE_DISC_TO;
331
332 xprt->resvport = 0;
333 xprt->ops = &xprt_rdma_procs;
334
335
336
337
338 sap = args->dstaddr;
339
340
341
342 xprt->prot = IPPROTO_TCP;
343 xprt->addrlen = args->addrlen;
344 memcpy(&xprt->addr, sap, xprt->addrlen);
345
346 if (rpc_get_port(sap))
347 xprt_set_bound(xprt);
348 xprt_rdma_format_addresses(xprt, sap);
349
350 new_xprt = rpcx_to_rdmax(xprt);
351 rc = rpcrdma_ia_open(new_xprt);
352 if (rc)
353 goto out1;
354
355 rc = rpcrdma_ep_create(new_xprt);
356 if (rc)
357 goto out2;
358
359 rc = rpcrdma_buffer_create(new_xprt);
360 if (rc)
361 goto out3;
362
363 INIT_DELAYED_WORK(&new_xprt->rx_connect_worker,
364 xprt_rdma_connect_worker);
365
366 xprt->max_payload = frwr_maxpages(new_xprt);
367 if (xprt->max_payload == 0)
368 goto out4;
369 xprt->max_payload <<= PAGE_SHIFT;
370 dprintk("RPC: %s: transport data payload maximum: %zu bytes\n",
371 __func__, xprt->max_payload);
372
373 if (!try_module_get(THIS_MODULE))
374 goto out4;
375
376 dprintk("RPC: %s: %s:%s\n", __func__,
377 xprt->address_strings[RPC_DISPLAY_ADDR],
378 xprt->address_strings[RPC_DISPLAY_PORT]);
379 trace_xprtrdma_create(new_xprt);
380 return xprt;
381
382out4:
383 rpcrdma_buffer_destroy(&new_xprt->rx_buf);
384 rc = -ENODEV;
385out3:
386 rpcrdma_ep_destroy(new_xprt);
387out2:
388 rpcrdma_ia_close(&new_xprt->rx_ia);
389out1:
390 trace_xprtrdma_op_destroy(new_xprt);
391 xprt_rdma_free_addresses(xprt);
392 xprt_free(xprt);
393 return ERR_PTR(rc);
394}
395
396
397
398
399
400
401
402
403
404
405void xprt_rdma_close(struct rpc_xprt *xprt)
406{
407 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
408 struct rpcrdma_ep *ep = &r_xprt->rx_ep;
409 struct rpcrdma_ia *ia = &r_xprt->rx_ia;
410
411 might_sleep();
412
413 trace_xprtrdma_op_close(r_xprt);
414
415
416 xprt_clear_connected(xprt);
417
418 if (test_and_clear_bit(RPCRDMA_IAF_REMOVING, &ia->ri_flags)) {
419 rpcrdma_ia_remove(ia);
420 goto out;
421 }
422
423 if (ep->rep_connected == -ENODEV)
424 return;
425 if (ep->rep_connected > 0)
426 xprt->reestablish_timeout = 0;
427 rpcrdma_ep_disconnect(ep, ia);
428
429
430
431
432 r_xprt->rx_buf.rb_credits = 1;
433 xprt->cwnd = RPC_CWNDSHIFT;
434
435out:
436 ++xprt->connect_cookie;
437 xprt_disconnect_done(xprt);
438}
439
440
441
442
443
444
445
446
447static void
448xprt_rdma_set_port(struct rpc_xprt *xprt, u16 port)
449{
450 struct sockaddr *sap = (struct sockaddr *)&xprt->addr;
451 char buf[8];
452
453 dprintk("RPC: %s: setting port for xprt %p (%s:%s) to %u\n",
454 __func__, xprt,
455 xprt->address_strings[RPC_DISPLAY_ADDR],
456 xprt->address_strings[RPC_DISPLAY_PORT],
457 port);
458
459 rpc_set_port(sap, port);
460
461 kfree(xprt->address_strings[RPC_DISPLAY_PORT]);
462 snprintf(buf, sizeof(buf), "%u", port);
463 xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);
464
465 kfree(xprt->address_strings[RPC_DISPLAY_HEX_PORT]);
466 snprintf(buf, sizeof(buf), "%4hx", port);
467 xprt->address_strings[RPC_DISPLAY_HEX_PORT] = kstrdup(buf, GFP_KERNEL);
468}
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483static void
484xprt_rdma_timer(struct rpc_xprt *xprt, struct rpc_task *task)
485{
486 xprt_force_disconnect(xprt);
487}
488
489
490
491
492
493
494
495static void
496xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task)
497{
498 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
499
500 trace_xprtrdma_op_connect(r_xprt);
501 if (r_xprt->rx_ep.rep_connected != 0) {
502
503 schedule_delayed_work(&r_xprt->rx_connect_worker,
504 xprt->reestablish_timeout);
505 xprt->reestablish_timeout <<= 1;
506 if (xprt->reestablish_timeout > RPCRDMA_MAX_REEST_TO)
507 xprt->reestablish_timeout = RPCRDMA_MAX_REEST_TO;
508 else if (xprt->reestablish_timeout < RPCRDMA_INIT_REEST_TO)
509 xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
510 } else {
511 schedule_delayed_work(&r_xprt->rx_connect_worker, 0);
512 if (!RPC_IS_ASYNC(task))
513 flush_delayed_work(&r_xprt->rx_connect_worker);
514 }
515}
516
517
518
519
520
521
522
523
524
525
526static void
527xprt_rdma_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task)
528{
529 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
530 struct rpcrdma_req *req;
531
532 req = rpcrdma_buffer_get(&r_xprt->rx_buf);
533 if (!req)
534 goto out_sleep;
535 task->tk_rqstp = &req->rl_slot;
536 task->tk_status = 0;
537 return;
538
539out_sleep:
540 rpc_sleep_on(&xprt->backlog, task, NULL);
541 task->tk_status = -EAGAIN;
542}
543
544
545
546
547
548
549
550static void
551xprt_rdma_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *rqst)
552{
553 memset(rqst, 0, sizeof(*rqst));
554 rpcrdma_buffer_put(rpcr_to_rdmar(rqst));
555 rpc_wake_up_next(&xprt->backlog);
556}
557
558static bool rpcrdma_check_regbuf(struct rpcrdma_xprt *r_xprt,
559 struct rpcrdma_regbuf *rb, size_t size,
560 gfp_t flags)
561{
562 if (unlikely(rdmab_length(rb) < size)) {
563 if (!rpcrdma_regbuf_realloc(rb, size, flags))
564 return false;
565 r_xprt->rx_stats.hardway_register_count += size;
566 }
567 return true;
568}
569
570
571
572
573
574
575
576
577
578
579static int
580xprt_rdma_allocate(struct rpc_task *task)
581{
582 struct rpc_rqst *rqst = task->tk_rqstp;
583 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt);
584 struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
585 gfp_t flags;
586
587 flags = RPCRDMA_DEF_GFP;
588 if (RPC_IS_SWAPPER(task))
589 flags = __GFP_MEMALLOC | GFP_NOWAIT | __GFP_NOWARN;
590
591 if (!rpcrdma_check_regbuf(r_xprt, req->rl_sendbuf, rqst->rq_callsize,
592 flags))
593 goto out_fail;
594 if (!rpcrdma_check_regbuf(r_xprt, req->rl_recvbuf, rqst->rq_rcvsize,
595 flags))
596 goto out_fail;
597
598 rqst->rq_buffer = rdmab_data(req->rl_sendbuf);
599 rqst->rq_rbuffer = rdmab_data(req->rl_recvbuf);
600 trace_xprtrdma_op_allocate(task, req);
601 return 0;
602
603out_fail:
604 trace_xprtrdma_op_allocate(task, NULL);
605 return -ENOMEM;
606}
607
608
609
610
611
612
613
614static void
615xprt_rdma_free(struct rpc_task *task)
616{
617 struct rpc_rqst *rqst = task->tk_rqstp;
618 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt);
619 struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
620
621 if (test_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags))
622 rpcrdma_release_rqst(r_xprt, req);
623 trace_xprtrdma_op_free(task, req);
624}
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642static int
643xprt_rdma_send_request(struct rpc_rqst *rqst)
644{
645 struct rpc_xprt *xprt = rqst->rq_xprt;
646 struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
647 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
648 int rc = 0;
649
650#if defined(CONFIG_SUNRPC_BACKCHANNEL)
651 if (unlikely(!rqst->rq_buffer))
652 return xprt_rdma_bc_send_reply(rqst);
653#endif
654
655 if (!xprt_connected(xprt))
656 return -ENOTCONN;
657
658 if (!xprt_request_get_cong(xprt, rqst))
659 return -EBADSLT;
660
661 rc = rpcrdma_marshal_req(r_xprt, rqst);
662 if (rc < 0)
663 goto failed_marshal;
664
665
666 if (rqst->rq_connect_cookie == xprt->connect_cookie)
667 goto drop_connection;
668 rqst->rq_xtime = ktime_get();
669
670 __set_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags);
671 if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req))
672 goto drop_connection;
673
674 rqst->rq_xmit_bytes_sent += rqst->rq_snd_buf.len;
675
676
677
678
679 if (!rpc_reply_expected(rqst->rq_task))
680 goto drop_connection;
681 return 0;
682
683failed_marshal:
684 if (rc != -ENOTCONN)
685 return rc;
686drop_connection:
687 xprt_rdma_close(xprt);
688 return -ENOTCONN;
689}
690
691void xprt_rdma_print_stats(struct rpc_xprt *xprt, struct seq_file *seq)
692{
693 struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
694 long idle_time = 0;
695
696 if (xprt_connected(xprt))
697 idle_time = (long)(jiffies - xprt->last_used) / HZ;
698
699 seq_puts(seq, "\txprt:\trdma ");
700 seq_printf(seq, "%u %lu %lu %lu %ld %lu %lu %lu %llu %llu ",
701 0,
702 xprt->stat.bind_count,
703 xprt->stat.connect_count,
704 xprt->stat.connect_time / HZ,
705 idle_time,
706 xprt->stat.sends,
707 xprt->stat.recvs,
708 xprt->stat.bad_xids,
709 xprt->stat.req_u,
710 xprt->stat.bklog_u);
711 seq_printf(seq, "%lu %lu %lu %llu %llu %llu %llu %lu %lu %lu %lu ",
712 r_xprt->rx_stats.read_chunk_count,
713 r_xprt->rx_stats.write_chunk_count,
714 r_xprt->rx_stats.reply_chunk_count,
715 r_xprt->rx_stats.total_rdma_request,
716 r_xprt->rx_stats.total_rdma_reply,
717 r_xprt->rx_stats.pullup_copy_count,
718 r_xprt->rx_stats.fixup_copy_count,
719 r_xprt->rx_stats.hardway_register_count,
720 r_xprt->rx_stats.failed_marshal_count,
721 r_xprt->rx_stats.bad_reply_count,
722 r_xprt->rx_stats.nomsg_call_count);
723 seq_printf(seq, "%lu %lu %lu %lu %lu %lu\n",
724 r_xprt->rx_stats.mrs_recycled,
725 r_xprt->rx_stats.mrs_orphaned,
726 r_xprt->rx_stats.mrs_allocated,
727 r_xprt->rx_stats.local_inv_needed,
728 r_xprt->rx_stats.empty_sendctx_q,
729 r_xprt->rx_stats.reply_waits_for_send);
730}
731
732static int
733xprt_rdma_enable_swap(struct rpc_xprt *xprt)
734{
735 return 0;
736}
737
738static void
739xprt_rdma_disable_swap(struct rpc_xprt *xprt)
740{
741}
742
743
744
745
746
747static const struct rpc_xprt_ops xprt_rdma_procs = {
748 .reserve_xprt = xprt_reserve_xprt_cong,
749 .release_xprt = xprt_release_xprt_cong,
750 .alloc_slot = xprt_rdma_alloc_slot,
751 .free_slot = xprt_rdma_free_slot,
752 .release_request = xprt_release_rqst_cong,
753 .wait_for_reply_request = xprt_wait_for_reply_request_def,
754 .timer = xprt_rdma_timer,
755 .rpcbind = rpcb_getport_async,
756 .set_port = xprt_rdma_set_port,
757 .connect = xprt_rdma_connect,
758 .buf_alloc = xprt_rdma_allocate,
759 .buf_free = xprt_rdma_free,
760 .send_request = xprt_rdma_send_request,
761 .close = xprt_rdma_close,
762 .destroy = xprt_rdma_destroy,
763 .print_stats = xprt_rdma_print_stats,
764 .enable_swap = xprt_rdma_enable_swap,
765 .disable_swap = xprt_rdma_disable_swap,
766 .inject_disconnect = xprt_rdma_inject_disconnect,
767#if defined(CONFIG_SUNRPC_BACKCHANNEL)
768 .bc_setup = xprt_rdma_bc_setup,
769 .bc_maxpayload = xprt_rdma_bc_maxpayload,
770 .bc_free_rqst = xprt_rdma_bc_free_rqst,
771 .bc_destroy = xprt_rdma_bc_destroy,
772#endif
773};
774
775static struct xprt_class xprt_rdma = {
776 .list = LIST_HEAD_INIT(xprt_rdma.list),
777 .name = "rdma",
778 .owner = THIS_MODULE,
779 .ident = XPRT_TRANSPORT_RDMA,
780 .setup = xprt_setup_rdma,
781};
782
783void xprt_rdma_cleanup(void)
784{
785#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
786 if (sunrpc_table_header) {
787 unregister_sysctl_table(sunrpc_table_header);
788 sunrpc_table_header = NULL;
789 }
790#endif
791
792 xprt_unregister_transport(&xprt_rdma);
793 xprt_unregister_transport(&xprt_rdma_bc);
794}
795
796int xprt_rdma_init(void)
797{
798 int rc;
799
800 rc = xprt_register_transport(&xprt_rdma);
801 if (rc)
802 return rc;
803
804 rc = xprt_register_transport(&xprt_rdma_bc);
805 if (rc) {
806 xprt_unregister_transport(&xprt_rdma);
807 return rc;
808 }
809
810#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
811 if (!sunrpc_table_header)
812 sunrpc_table_header = register_sysctl_table(sunrpc_table);
813#endif
814 return 0;
815}
816