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TOMOYO Linux Cross Reference
Linux/net/rds/af_rds.c

Version: ~ [ linux-5.3-rc5 ] ~ [ linux-5.2.9 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.67 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.139 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.189 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.189 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.72 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  1 /*
  2  * Copyright (c) 2006 Oracle.  All rights reserved.
  3  *
  4  * This software is available to you under a choice of one of two
  5  * licenses.  You may choose to be licensed under the terms of the GNU
  6  * General Public License (GPL) Version 2, available from the file
  7  * COPYING in the main directory of this source tree, or the
  8  * OpenIB.org BSD license below:
  9  *
 10  *     Redistribution and use in source and binary forms, with or
 11  *     without modification, are permitted provided that the following
 12  *     conditions are met:
 13  *
 14  *      - Redistributions of source code must retain the above
 15  *        copyright notice, this list of conditions and the following
 16  *        disclaimer.
 17  *
 18  *      - Redistributions in binary form must reproduce the above
 19  *        copyright notice, this list of conditions and the following
 20  *        disclaimer in the documentation and/or other materials
 21  *        provided with the distribution.
 22  *
 23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 30  * SOFTWARE.
 31  *
 32  */
 33 #include <linux/module.h>
 34 #include <linux/errno.h>
 35 #include <linux/kernel.h>
 36 #include <linux/gfp.h>
 37 #include <linux/in.h>
 38 #include <linux/poll.h>
 39 #include <net/sock.h>
 40 
 41 #include "rds.h"
 42 
 43 /* this is just used for stats gathering :/ */
 44 static DEFINE_SPINLOCK(rds_sock_lock);
 45 static unsigned long rds_sock_count;
 46 static LIST_HEAD(rds_sock_list);
 47 DECLARE_WAIT_QUEUE_HEAD(rds_poll_waitq);
 48 
 49 /*
 50  * This is called as the final descriptor referencing this socket is closed.
 51  * We have to unbind the socket so that another socket can be bound to the
 52  * address it was using.
 53  *
 54  * We have to be careful about racing with the incoming path.  sock_orphan()
 55  * sets SOCK_DEAD and we use that as an indicator to the rx path that new
 56  * messages shouldn't be queued.
 57  */
 58 static int rds_release(struct socket *sock)
 59 {
 60         struct sock *sk = sock->sk;
 61         struct rds_sock *rs;
 62 
 63         if (!sk)
 64                 goto out;
 65 
 66         rs = rds_sk_to_rs(sk);
 67 
 68         sock_orphan(sk);
 69         /* Note - rds_clear_recv_queue grabs rs_recv_lock, so
 70          * that ensures the recv path has completed messing
 71          * with the socket. */
 72         rds_clear_recv_queue(rs);
 73         rds_cong_remove_socket(rs);
 74 
 75         rds_remove_bound(rs);
 76 
 77         rds_send_drop_to(rs, NULL);
 78         rds_rdma_drop_keys(rs);
 79         rds_notify_queue_get(rs, NULL);
 80 
 81         spin_lock_bh(&rds_sock_lock);
 82         list_del_init(&rs->rs_item);
 83         rds_sock_count--;
 84         spin_unlock_bh(&rds_sock_lock);
 85 
 86         rds_trans_put(rs->rs_transport);
 87 
 88         sock->sk = NULL;
 89         sock_put(sk);
 90 out:
 91         return 0;
 92 }
 93 
 94 /*
 95  * Careful not to race with rds_release -> sock_orphan which clears sk_sleep.
 96  * _bh() isn't OK here, we're called from interrupt handlers.  It's probably OK
 97  * to wake the waitqueue after sk_sleep is clear as we hold a sock ref, but
 98  * this seems more conservative.
 99  * NB - normally, one would use sk_callback_lock for this, but we can
100  * get here from interrupts, whereas the network code grabs sk_callback_lock
101  * with _lock_bh only - so relying on sk_callback_lock introduces livelocks.
102  */
103 void rds_wake_sk_sleep(struct rds_sock *rs)
104 {
105         unsigned long flags;
106 
107         read_lock_irqsave(&rs->rs_recv_lock, flags);
108         __rds_wake_sk_sleep(rds_rs_to_sk(rs));
109         read_unlock_irqrestore(&rs->rs_recv_lock, flags);
110 }
111 
112 static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
113                        int *uaddr_len, int peer)
114 {
115         struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
116         struct rds_sock *rs = rds_sk_to_rs(sock->sk);
117 
118         memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
119 
120         /* racey, don't care */
121         if (peer) {
122                 if (!rs->rs_conn_addr)
123                         return -ENOTCONN;
124 
125                 sin->sin_port = rs->rs_conn_port;
126                 sin->sin_addr.s_addr = rs->rs_conn_addr;
127         } else {
128                 sin->sin_port = rs->rs_bound_port;
129                 sin->sin_addr.s_addr = rs->rs_bound_addr;
130         }
131 
132         sin->sin_family = AF_INET;
133 
134         *uaddr_len = sizeof(*sin);
135         return 0;
136 }
137 
138 /*
139  * RDS' poll is without a doubt the least intuitive part of the interface,
140  * as POLLIN and POLLOUT do not behave entirely as you would expect from
141  * a network protocol.
142  *
143  * POLLIN is asserted if
144  *  -   there is data on the receive queue.
145  *  -   to signal that a previously congested destination may have become
146  *      uncongested
147  *  -   A notification has been queued to the socket (this can be a congestion
148  *      update, or a RDMA completion).
149  *
150  * POLLOUT is asserted if there is room on the send queue. This does not mean
151  * however, that the next sendmsg() call will succeed. If the application tries
152  * to send to a congested destination, the system call may still fail (and
153  * return ENOBUFS).
154  */
155 static unsigned int rds_poll(struct file *file, struct socket *sock,
156                              poll_table *wait)
157 {
158         struct sock *sk = sock->sk;
159         struct rds_sock *rs = rds_sk_to_rs(sk);
160         unsigned int mask = 0;
161         unsigned long flags;
162 
163         poll_wait(file, sk_sleep(sk), wait);
164 
165         if (rs->rs_seen_congestion)
166                 poll_wait(file, &rds_poll_waitq, wait);
167 
168         read_lock_irqsave(&rs->rs_recv_lock, flags);
169         if (!rs->rs_cong_monitor) {
170                 /* When a congestion map was updated, we signal POLLIN for
171                  * "historical" reasons. Applications can also poll for
172                  * WRBAND instead. */
173                 if (rds_cong_updated_since(&rs->rs_cong_track))
174                         mask |= (POLLIN | POLLRDNORM | POLLWRBAND);
175         } else {
176                 spin_lock(&rs->rs_lock);
177                 if (rs->rs_cong_notify)
178                         mask |= (POLLIN | POLLRDNORM);
179                 spin_unlock(&rs->rs_lock);
180         }
181         if (!list_empty(&rs->rs_recv_queue) ||
182             !list_empty(&rs->rs_notify_queue))
183                 mask |= (POLLIN | POLLRDNORM);
184         if (rs->rs_snd_bytes < rds_sk_sndbuf(rs))
185                 mask |= (POLLOUT | POLLWRNORM);
186         read_unlock_irqrestore(&rs->rs_recv_lock, flags);
187 
188         /* clear state any time we wake a seen-congested socket */
189         if (mask)
190                 rs->rs_seen_congestion = 0;
191 
192         return mask;
193 }
194 
195 static int rds_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
196 {
197         return -ENOIOCTLCMD;
198 }
199 
200 static int rds_cancel_sent_to(struct rds_sock *rs, char __user *optval,
201                               int len)
202 {
203         struct sockaddr_in sin;
204         int ret = 0;
205 
206         /* racing with another thread binding seems ok here */
207         if (rs->rs_bound_addr == 0) {
208                 ret = -ENOTCONN; /* XXX not a great errno */
209                 goto out;
210         }
211 
212         if (len < sizeof(struct sockaddr_in)) {
213                 ret = -EINVAL;
214                 goto out;
215         }
216 
217         if (copy_from_user(&sin, optval, sizeof(sin))) {
218                 ret = -EFAULT;
219                 goto out;
220         }
221 
222         rds_send_drop_to(rs, &sin);
223 out:
224         return ret;
225 }
226 
227 static int rds_set_bool_option(unsigned char *optvar, char __user *optval,
228                                int optlen)
229 {
230         int value;
231 
232         if (optlen < sizeof(int))
233                 return -EINVAL;
234         if (get_user(value, (int __user *) optval))
235                 return -EFAULT;
236         *optvar = !!value;
237         return 0;
238 }
239 
240 static int rds_cong_monitor(struct rds_sock *rs, char __user *optval,
241                             int optlen)
242 {
243         int ret;
244 
245         ret = rds_set_bool_option(&rs->rs_cong_monitor, optval, optlen);
246         if (ret == 0) {
247                 if (rs->rs_cong_monitor) {
248                         rds_cong_add_socket(rs);
249                 } else {
250                         rds_cong_remove_socket(rs);
251                         rs->rs_cong_mask = 0;
252                         rs->rs_cong_notify = 0;
253                 }
254         }
255         return ret;
256 }
257 
258 static int rds_set_transport(struct rds_sock *rs, char __user *optval,
259                              int optlen)
260 {
261         int t_type;
262 
263         if (rs->rs_transport)
264                 return -EOPNOTSUPP; /* previously attached to transport */
265 
266         if (optlen != sizeof(int))
267                 return -EINVAL;
268 
269         if (copy_from_user(&t_type, (int __user *)optval, sizeof(t_type)))
270                 return -EFAULT;
271 
272         if (t_type < 0 || t_type >= RDS_TRANS_COUNT)
273                 return -EINVAL;
274 
275         rs->rs_transport = rds_trans_get(t_type);
276 
277         return rs->rs_transport ? 0 : -ENOPROTOOPT;
278 }
279 
280 static int rds_enable_recvtstamp(struct sock *sk, char __user *optval,
281                                  int optlen)
282 {
283         int val, valbool;
284 
285         if (optlen != sizeof(int))
286                 return -EFAULT;
287 
288         if (get_user(val, (int __user *)optval))
289                 return -EFAULT;
290 
291         valbool = val ? 1 : 0;
292 
293         if (valbool)
294                 sock_set_flag(sk, SOCK_RCVTSTAMP);
295         else
296                 sock_reset_flag(sk, SOCK_RCVTSTAMP);
297 
298         return 0;
299 }
300 
301 static int rds_setsockopt(struct socket *sock, int level, int optname,
302                           char __user *optval, unsigned int optlen)
303 {
304         struct rds_sock *rs = rds_sk_to_rs(sock->sk);
305         int ret;
306 
307         if (level != SOL_RDS) {
308                 ret = -ENOPROTOOPT;
309                 goto out;
310         }
311 
312         switch (optname) {
313         case RDS_CANCEL_SENT_TO:
314                 ret = rds_cancel_sent_to(rs, optval, optlen);
315                 break;
316         case RDS_GET_MR:
317                 ret = rds_get_mr(rs, optval, optlen);
318                 break;
319         case RDS_GET_MR_FOR_DEST:
320                 ret = rds_get_mr_for_dest(rs, optval, optlen);
321                 break;
322         case RDS_FREE_MR:
323                 ret = rds_free_mr(rs, optval, optlen);
324                 break;
325         case RDS_RECVERR:
326                 ret = rds_set_bool_option(&rs->rs_recverr, optval, optlen);
327                 break;
328         case RDS_CONG_MONITOR:
329                 ret = rds_cong_monitor(rs, optval, optlen);
330                 break;
331         case SO_RDS_TRANSPORT:
332                 lock_sock(sock->sk);
333                 ret = rds_set_transport(rs, optval, optlen);
334                 release_sock(sock->sk);
335                 break;
336         case SO_TIMESTAMP:
337                 lock_sock(sock->sk);
338                 ret = rds_enable_recvtstamp(sock->sk, optval, optlen);
339                 release_sock(sock->sk);
340                 break;
341         default:
342                 ret = -ENOPROTOOPT;
343         }
344 out:
345         return ret;
346 }
347 
348 static int rds_getsockopt(struct socket *sock, int level, int optname,
349                           char __user *optval, int __user *optlen)
350 {
351         struct rds_sock *rs = rds_sk_to_rs(sock->sk);
352         int ret = -ENOPROTOOPT, len;
353         int trans;
354 
355         if (level != SOL_RDS)
356                 goto out;
357 
358         if (get_user(len, optlen)) {
359                 ret = -EFAULT;
360                 goto out;
361         }
362 
363         switch (optname) {
364         case RDS_INFO_FIRST ... RDS_INFO_LAST:
365                 ret = rds_info_getsockopt(sock, optname, optval,
366                                           optlen);
367                 break;
368 
369         case RDS_RECVERR:
370                 if (len < sizeof(int))
371                         ret = -EINVAL;
372                 else
373                 if (put_user(rs->rs_recverr, (int __user *) optval) ||
374                     put_user(sizeof(int), optlen))
375                         ret = -EFAULT;
376                 else
377                         ret = 0;
378                 break;
379         case SO_RDS_TRANSPORT:
380                 if (len < sizeof(int)) {
381                         ret = -EINVAL;
382                         break;
383                 }
384                 trans = (rs->rs_transport ? rs->rs_transport->t_type :
385                          RDS_TRANS_NONE); /* unbound */
386                 if (put_user(trans, (int __user *)optval) ||
387                     put_user(sizeof(int), optlen))
388                         ret = -EFAULT;
389                 else
390                         ret = 0;
391                 break;
392         default:
393                 break;
394         }
395 
396 out:
397         return ret;
398 
399 }
400 
401 static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
402                        int addr_len, int flags)
403 {
404         struct sock *sk = sock->sk;
405         struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
406         struct rds_sock *rs = rds_sk_to_rs(sk);
407         int ret = 0;
408 
409         lock_sock(sk);
410 
411         if (addr_len != sizeof(struct sockaddr_in)) {
412                 ret = -EINVAL;
413                 goto out;
414         }
415 
416         if (sin->sin_family != AF_INET) {
417                 ret = -EAFNOSUPPORT;
418                 goto out;
419         }
420 
421         if (sin->sin_addr.s_addr == htonl(INADDR_ANY)) {
422                 ret = -EDESTADDRREQ;
423                 goto out;
424         }
425 
426         rs->rs_conn_addr = sin->sin_addr.s_addr;
427         rs->rs_conn_port = sin->sin_port;
428 
429 out:
430         release_sock(sk);
431         return ret;
432 }
433 
434 static struct proto rds_proto = {
435         .name     = "RDS",
436         .owner    = THIS_MODULE,
437         .obj_size = sizeof(struct rds_sock),
438 };
439 
440 static const struct proto_ops rds_proto_ops = {
441         .family =       AF_RDS,
442         .owner =        THIS_MODULE,
443         .release =      rds_release,
444         .bind =         rds_bind,
445         .connect =      rds_connect,
446         .socketpair =   sock_no_socketpair,
447         .accept =       sock_no_accept,
448         .getname =      rds_getname,
449         .poll =         rds_poll,
450         .ioctl =        rds_ioctl,
451         .listen =       sock_no_listen,
452         .shutdown =     sock_no_shutdown,
453         .setsockopt =   rds_setsockopt,
454         .getsockopt =   rds_getsockopt,
455         .sendmsg =      rds_sendmsg,
456         .recvmsg =      rds_recvmsg,
457         .mmap =         sock_no_mmap,
458         .sendpage =     sock_no_sendpage,
459 };
460 
461 static void rds_sock_destruct(struct sock *sk)
462 {
463         struct rds_sock *rs = rds_sk_to_rs(sk);
464 
465         WARN_ON((&rs->rs_item != rs->rs_item.next ||
466                  &rs->rs_item != rs->rs_item.prev));
467 }
468 
469 static int __rds_create(struct socket *sock, struct sock *sk, int protocol)
470 {
471         struct rds_sock *rs;
472 
473         sock_init_data(sock, sk);
474         sock->ops               = &rds_proto_ops;
475         sk->sk_protocol         = protocol;
476         sk->sk_destruct         = rds_sock_destruct;
477 
478         rs = rds_sk_to_rs(sk);
479         spin_lock_init(&rs->rs_lock);
480         rwlock_init(&rs->rs_recv_lock);
481         INIT_LIST_HEAD(&rs->rs_send_queue);
482         INIT_LIST_HEAD(&rs->rs_recv_queue);
483         INIT_LIST_HEAD(&rs->rs_notify_queue);
484         INIT_LIST_HEAD(&rs->rs_cong_list);
485         spin_lock_init(&rs->rs_rdma_lock);
486         rs->rs_rdma_keys = RB_ROOT;
487 
488         spin_lock_bh(&rds_sock_lock);
489         list_add_tail(&rs->rs_item, &rds_sock_list);
490         rds_sock_count++;
491         spin_unlock_bh(&rds_sock_lock);
492 
493         return 0;
494 }
495 
496 static int rds_create(struct net *net, struct socket *sock, int protocol,
497                       int kern)
498 {
499         struct sock *sk;
500 
501         if (sock->type != SOCK_SEQPACKET || protocol)
502                 return -ESOCKTNOSUPPORT;
503 
504         sk = sk_alloc(net, AF_RDS, GFP_ATOMIC, &rds_proto, kern);
505         if (!sk)
506                 return -ENOMEM;
507 
508         return __rds_create(sock, sk, protocol);
509 }
510 
511 void rds_sock_addref(struct rds_sock *rs)
512 {
513         sock_hold(rds_rs_to_sk(rs));
514 }
515 
516 void rds_sock_put(struct rds_sock *rs)
517 {
518         sock_put(rds_rs_to_sk(rs));
519 }
520 
521 static const struct net_proto_family rds_family_ops = {
522         .family =       AF_RDS,
523         .create =       rds_create,
524         .owner  =       THIS_MODULE,
525 };
526 
527 static void rds_sock_inc_info(struct socket *sock, unsigned int len,
528                               struct rds_info_iterator *iter,
529                               struct rds_info_lengths *lens)
530 {
531         struct rds_sock *rs;
532         struct rds_incoming *inc;
533         unsigned int total = 0;
534 
535         len /= sizeof(struct rds_info_message);
536 
537         spin_lock_bh(&rds_sock_lock);
538 
539         list_for_each_entry(rs, &rds_sock_list, rs_item) {
540                 read_lock(&rs->rs_recv_lock);
541 
542                 /* XXX too lazy to maintain counts.. */
543                 list_for_each_entry(inc, &rs->rs_recv_queue, i_item) {
544                         total++;
545                         if (total <= len)
546                                 rds_inc_info_copy(inc, iter, inc->i_saddr,
547                                                   rs->rs_bound_addr, 1);
548                 }
549 
550                 read_unlock(&rs->rs_recv_lock);
551         }
552 
553         spin_unlock_bh(&rds_sock_lock);
554 
555         lens->nr = total;
556         lens->each = sizeof(struct rds_info_message);
557 }
558 
559 static void rds_sock_info(struct socket *sock, unsigned int len,
560                           struct rds_info_iterator *iter,
561                           struct rds_info_lengths *lens)
562 {
563         struct rds_info_socket sinfo;
564         struct rds_sock *rs;
565 
566         len /= sizeof(struct rds_info_socket);
567 
568         spin_lock_bh(&rds_sock_lock);
569 
570         if (len < rds_sock_count)
571                 goto out;
572 
573         list_for_each_entry(rs, &rds_sock_list, rs_item) {
574                 sinfo.sndbuf = rds_sk_sndbuf(rs);
575                 sinfo.rcvbuf = rds_sk_rcvbuf(rs);
576                 sinfo.bound_addr = rs->rs_bound_addr;
577                 sinfo.connected_addr = rs->rs_conn_addr;
578                 sinfo.bound_port = rs->rs_bound_port;
579                 sinfo.connected_port = rs->rs_conn_port;
580                 sinfo.inum = sock_i_ino(rds_rs_to_sk(rs));
581 
582                 rds_info_copy(iter, &sinfo, sizeof(sinfo));
583         }
584 
585 out:
586         lens->nr = rds_sock_count;
587         lens->each = sizeof(struct rds_info_socket);
588 
589         spin_unlock_bh(&rds_sock_lock);
590 }
591 
592 static void rds_exit(void)
593 {
594         sock_unregister(rds_family_ops.family);
595         proto_unregister(&rds_proto);
596         rds_conn_exit();
597         rds_cong_exit();
598         rds_sysctl_exit();
599         rds_threads_exit();
600         rds_stats_exit();
601         rds_page_exit();
602         rds_bind_lock_destroy();
603         rds_info_deregister_func(RDS_INFO_SOCKETS, rds_sock_info);
604         rds_info_deregister_func(RDS_INFO_RECV_MESSAGES, rds_sock_inc_info);
605 }
606 module_exit(rds_exit);
607 
608 u32 rds_gen_num;
609 
610 static int rds_init(void)
611 {
612         int ret;
613 
614         net_get_random_once(&rds_gen_num, sizeof(rds_gen_num));
615 
616         ret = rds_bind_lock_init();
617         if (ret)
618                 goto out;
619 
620         ret = rds_conn_init();
621         if (ret)
622                 goto out_bind;
623 
624         ret = rds_threads_init();
625         if (ret)
626                 goto out_conn;
627         ret = rds_sysctl_init();
628         if (ret)
629                 goto out_threads;
630         ret = rds_stats_init();
631         if (ret)
632                 goto out_sysctl;
633         ret = proto_register(&rds_proto, 1);
634         if (ret)
635                 goto out_stats;
636         ret = sock_register(&rds_family_ops);
637         if (ret)
638                 goto out_proto;
639 
640         rds_info_register_func(RDS_INFO_SOCKETS, rds_sock_info);
641         rds_info_register_func(RDS_INFO_RECV_MESSAGES, rds_sock_inc_info);
642 
643         goto out;
644 
645 out_proto:
646         proto_unregister(&rds_proto);
647 out_stats:
648         rds_stats_exit();
649 out_sysctl:
650         rds_sysctl_exit();
651 out_threads:
652         rds_threads_exit();
653 out_conn:
654         rds_conn_exit();
655         rds_cong_exit();
656         rds_page_exit();
657 out_bind:
658         rds_bind_lock_destroy();
659 out:
660         return ret;
661 }
662 module_init(rds_init);
663 
664 #define DRV_VERSION     "4.0"
665 #define DRV_RELDATE     "Feb 12, 2009"
666 
667 MODULE_AUTHOR("Oracle Corporation <rds-devel@oss.oracle.com>");
668 MODULE_DESCRIPTION("RDS: Reliable Datagram Sockets"
669                    " v" DRV_VERSION " (" DRV_RELDATE ")");
670 MODULE_VERSION(DRV_VERSION);
671 MODULE_LICENSE("Dual BSD/GPL");
672 MODULE_ALIAS_NETPROTO(PF_RDS);
673 

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