blob: 04877441fb013042570948169334057757d5d6bf [file] [log] [blame]
Andy Grover639b3212009-02-24 15:30:18 +00001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090036#include <linux/gfp.h>
Andy Grover639b3212009-02-24 15:30:18 +000037#include <linux/in.h>
38#include <linux/poll.h>
Andy Grover639b3212009-02-24 15:30:18 +000039#include <net/sock.h>
40
41#include "rds.h"
Andy Grover639b3212009-02-24 15:30:18 +000042
Zach Brown59f740a2010-08-03 13:52:47 -070043char *rds_str_array(char **array, size_t elements, size_t index)
44{
45 if ((index < elements) && array[index])
46 return array[index];
47 else
48 return "unknown";
49}
50EXPORT_SYMBOL(rds_str_array);
51
Andy Grover639b3212009-02-24 15:30:18 +000052/* this is just used for stats gathering :/ */
53static DEFINE_SPINLOCK(rds_sock_lock);
54static unsigned long rds_sock_count;
55static LIST_HEAD(rds_sock_list);
56DECLARE_WAIT_QUEUE_HEAD(rds_poll_waitq);
57
58/*
59 * This is called as the final descriptor referencing this socket is closed.
60 * We have to unbind the socket so that another socket can be bound to the
61 * address it was using.
62 *
63 * We have to be careful about racing with the incoming path. sock_orphan()
64 * sets SOCK_DEAD and we use that as an indicator to the rx path that new
65 * messages shouldn't be queued.
66 */
67static int rds_release(struct socket *sock)
68{
69 struct sock *sk = sock->sk;
70 struct rds_sock *rs;
Andy Grover639b3212009-02-24 15:30:18 +000071
Andy Grover8690bfa2010-01-12 11:56:44 -080072 if (!sk)
Andy Grover639b3212009-02-24 15:30:18 +000073 goto out;
74
75 rs = rds_sk_to_rs(sk);
76
77 sock_orphan(sk);
78 /* Note - rds_clear_recv_queue grabs rs_recv_lock, so
79 * that ensures the recv path has completed messing
80 * with the socket. */
81 rds_clear_recv_queue(rs);
82 rds_cong_remove_socket(rs);
Chris Mason38a4e5e2010-05-11 15:09:45 -070083
84 /*
85 * the binding lookup hash uses rcu, we need to
Jesper Dangaard Brouerd7cdb962014-06-20 17:19:06 +020086 * make sure we synchronize_rcu before we free our
Chris Mason38a4e5e2010-05-11 15:09:45 -070087 * entry
88 */
Andy Grover639b3212009-02-24 15:30:18 +000089 rds_remove_bound(rs);
Chris Mason38a4e5e2010-05-11 15:09:45 -070090 synchronize_rcu();
91
Andy Grover639b3212009-02-24 15:30:18 +000092 rds_send_drop_to(rs, NULL);
93 rds_rdma_drop_keys(rs);
94 rds_notify_queue_get(rs, NULL);
95
David S. Millerefc3dbc2012-01-24 17:03:44 -050096 spin_lock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +000097 list_del_init(&rs->rs_item);
98 rds_sock_count--;
David S. Millerefc3dbc2012-01-24 17:03:44 -050099 spin_unlock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000100
Zach Brown5adb5bc2010-07-23 10:32:31 -0700101 rds_trans_put(rs->rs_transport);
102
Andy Grover639b3212009-02-24 15:30:18 +0000103 sock->sk = NULL;
104 sock_put(sk);
105out:
106 return 0;
107}
108
109/*
110 * Careful not to race with rds_release -> sock_orphan which clears sk_sleep.
111 * _bh() isn't OK here, we're called from interrupt handlers. It's probably OK
112 * to wake the waitqueue after sk_sleep is clear as we hold a sock ref, but
113 * this seems more conservative.
114 * NB - normally, one would use sk_callback_lock for this, but we can
115 * get here from interrupts, whereas the network code grabs sk_callback_lock
116 * with _lock_bh only - so relying on sk_callback_lock introduces livelocks.
117 */
118void rds_wake_sk_sleep(struct rds_sock *rs)
119{
120 unsigned long flags;
121
122 read_lock_irqsave(&rs->rs_recv_lock, flags);
123 __rds_wake_sk_sleep(rds_rs_to_sk(rs));
124 read_unlock_irqrestore(&rs->rs_recv_lock, flags);
125}
126
127static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
128 int *uaddr_len, int peer)
129{
130 struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
131 struct rds_sock *rs = rds_sk_to_rs(sock->sk);
132
133 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
134
135 /* racey, don't care */
136 if (peer) {
137 if (!rs->rs_conn_addr)
138 return -ENOTCONN;
139
140 sin->sin_port = rs->rs_conn_port;
141 sin->sin_addr.s_addr = rs->rs_conn_addr;
142 } else {
143 sin->sin_port = rs->rs_bound_port;
144 sin->sin_addr.s_addr = rs->rs_bound_addr;
145 }
146
147 sin->sin_family = AF_INET;
148
149 *uaddr_len = sizeof(*sin);
150 return 0;
151}
152
153/*
154 * RDS' poll is without a doubt the least intuitive part of the interface,
155 * as POLLIN and POLLOUT do not behave entirely as you would expect from
156 * a network protocol.
157 *
158 * POLLIN is asserted if
159 * - there is data on the receive queue.
160 * - to signal that a previously congested destination may have become
161 * uncongested
162 * - A notification has been queued to the socket (this can be a congestion
163 * update, or a RDMA completion).
164 *
165 * POLLOUT is asserted if there is room on the send queue. This does not mean
166 * however, that the next sendmsg() call will succeed. If the application tries
167 * to send to a congested destination, the system call may still fail (and
168 * return ENOBUFS).
169 */
170static unsigned int rds_poll(struct file *file, struct socket *sock,
171 poll_table *wait)
172{
173 struct sock *sk = sock->sk;
174 struct rds_sock *rs = rds_sk_to_rs(sk);
175 unsigned int mask = 0;
176 unsigned long flags;
177
Eric Dumazetaa395142010-04-20 13:03:51 +0000178 poll_wait(file, sk_sleep(sk), wait);
Andy Grover639b3212009-02-24 15:30:18 +0000179
Andy Groverb98ba522010-03-11 13:50:04 +0000180 if (rs->rs_seen_congestion)
181 poll_wait(file, &rds_poll_waitq, wait);
Andy Grover639b3212009-02-24 15:30:18 +0000182
183 read_lock_irqsave(&rs->rs_recv_lock, flags);
184 if (!rs->rs_cong_monitor) {
185 /* When a congestion map was updated, we signal POLLIN for
186 * "historical" reasons. Applications can also poll for
187 * WRBAND instead. */
188 if (rds_cong_updated_since(&rs->rs_cong_track))
189 mask |= (POLLIN | POLLRDNORM | POLLWRBAND);
190 } else {
191 spin_lock(&rs->rs_lock);
192 if (rs->rs_cong_notify)
193 mask |= (POLLIN | POLLRDNORM);
194 spin_unlock(&rs->rs_lock);
195 }
Joe Perchesf64f9e72009-11-29 16:55:45 -0800196 if (!list_empty(&rs->rs_recv_queue) ||
197 !list_empty(&rs->rs_notify_queue))
Andy Grover639b3212009-02-24 15:30:18 +0000198 mask |= (POLLIN | POLLRDNORM);
199 if (rs->rs_snd_bytes < rds_sk_sndbuf(rs))
200 mask |= (POLLOUT | POLLWRNORM);
201 read_unlock_irqrestore(&rs->rs_recv_lock, flags);
202
Andy Groverb98ba522010-03-11 13:50:04 +0000203 /* clear state any time we wake a seen-congested socket */
204 if (mask)
205 rs->rs_seen_congestion = 0;
206
Andy Grover639b3212009-02-24 15:30:18 +0000207 return mask;
208}
209
210static int rds_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
211{
212 return -ENOIOCTLCMD;
213}
214
215static int rds_cancel_sent_to(struct rds_sock *rs, char __user *optval,
216 int len)
217{
218 struct sockaddr_in sin;
219 int ret = 0;
220
221 /* racing with another thread binding seems ok here */
222 if (rs->rs_bound_addr == 0) {
223 ret = -ENOTCONN; /* XXX not a great errno */
224 goto out;
225 }
226
227 if (len < sizeof(struct sockaddr_in)) {
228 ret = -EINVAL;
229 goto out;
230 }
231
232 if (copy_from_user(&sin, optval, sizeof(sin))) {
233 ret = -EFAULT;
234 goto out;
235 }
236
237 rds_send_drop_to(rs, &sin);
238out:
239 return ret;
240}
241
242static int rds_set_bool_option(unsigned char *optvar, char __user *optval,
243 int optlen)
244{
245 int value;
246
247 if (optlen < sizeof(int))
248 return -EINVAL;
249 if (get_user(value, (int __user *) optval))
250 return -EFAULT;
251 *optvar = !!value;
252 return 0;
253}
254
255static int rds_cong_monitor(struct rds_sock *rs, char __user *optval,
256 int optlen)
257{
258 int ret;
259
260 ret = rds_set_bool_option(&rs->rs_cong_monitor, optval, optlen);
261 if (ret == 0) {
262 if (rs->rs_cong_monitor) {
263 rds_cong_add_socket(rs);
264 } else {
265 rds_cong_remove_socket(rs);
266 rs->rs_cong_mask = 0;
267 rs->rs_cong_notify = 0;
268 }
269 }
270 return ret;
271}
272
Sowmini Varadhand97dac52015-05-29 17:28:08 -0400273static int rds_set_transport(struct rds_sock *rs, char __user *optval,
274 int optlen)
275{
276 int t_type;
277
278 if (rs->rs_transport)
279 return -EOPNOTSUPP; /* previously attached to transport */
280
281 if (optlen != sizeof(int))
282 return -EINVAL;
283
284 if (copy_from_user(&t_type, (int __user *)optval, sizeof(t_type)))
285 return -EFAULT;
286
287 if (t_type < 0 || t_type >= RDS_TRANS_COUNT)
288 return -EINVAL;
289
290 rs->rs_transport = rds_trans_get(t_type);
291
292 return rs->rs_transport ? 0 : -ENOPROTOOPT;
293}
294
Andy Grover639b3212009-02-24 15:30:18 +0000295static int rds_setsockopt(struct socket *sock, int level, int optname,
David S. Millerb7058842009-09-30 16:12:20 -0700296 char __user *optval, unsigned int optlen)
Andy Grover639b3212009-02-24 15:30:18 +0000297{
298 struct rds_sock *rs = rds_sk_to_rs(sock->sk);
299 int ret;
300
301 if (level != SOL_RDS) {
302 ret = -ENOPROTOOPT;
303 goto out;
304 }
305
306 switch (optname) {
307 case RDS_CANCEL_SENT_TO:
308 ret = rds_cancel_sent_to(rs, optval, optlen);
309 break;
310 case RDS_GET_MR:
311 ret = rds_get_mr(rs, optval, optlen);
312 break;
Andy Grover244546f2009-10-30 08:54:53 +0000313 case RDS_GET_MR_FOR_DEST:
314 ret = rds_get_mr_for_dest(rs, optval, optlen);
315 break;
Andy Grover639b3212009-02-24 15:30:18 +0000316 case RDS_FREE_MR:
317 ret = rds_free_mr(rs, optval, optlen);
318 break;
319 case RDS_RECVERR:
320 ret = rds_set_bool_option(&rs->rs_recverr, optval, optlen);
321 break;
322 case RDS_CONG_MONITOR:
323 ret = rds_cong_monitor(rs, optval, optlen);
324 break;
Sowmini Varadhand97dac52015-05-29 17:28:08 -0400325 case SO_RDS_TRANSPORT:
326 lock_sock(sock->sk);
327 ret = rds_set_transport(rs, optval, optlen);
328 release_sock(sock->sk);
329 break;
Andy Grover639b3212009-02-24 15:30:18 +0000330 default:
331 ret = -ENOPROTOOPT;
332 }
333out:
334 return ret;
335}
336
337static int rds_getsockopt(struct socket *sock, int level, int optname,
338 char __user *optval, int __user *optlen)
339{
340 struct rds_sock *rs = rds_sk_to_rs(sock->sk);
341 int ret = -ENOPROTOOPT, len;
342
343 if (level != SOL_RDS)
344 goto out;
345
346 if (get_user(len, optlen)) {
347 ret = -EFAULT;
348 goto out;
349 }
350
351 switch (optname) {
352 case RDS_INFO_FIRST ... RDS_INFO_LAST:
353 ret = rds_info_getsockopt(sock, optname, optval,
354 optlen);
355 break;
356
357 case RDS_RECVERR:
358 if (len < sizeof(int))
359 ret = -EINVAL;
360 else
Joe Perchesf64f9e72009-11-29 16:55:45 -0800361 if (put_user(rs->rs_recverr, (int __user *) optval) ||
362 put_user(sizeof(int), optlen))
Andy Grover639b3212009-02-24 15:30:18 +0000363 ret = -EFAULT;
364 else
365 ret = 0;
366 break;
367 default:
368 break;
369 }
370
371out:
372 return ret;
373
374}
375
376static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
377 int addr_len, int flags)
378{
379 struct sock *sk = sock->sk;
380 struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
381 struct rds_sock *rs = rds_sk_to_rs(sk);
382 int ret = 0;
383
384 lock_sock(sk);
385
386 if (addr_len != sizeof(struct sockaddr_in)) {
387 ret = -EINVAL;
388 goto out;
389 }
390
391 if (sin->sin_family != AF_INET) {
392 ret = -EAFNOSUPPORT;
393 goto out;
394 }
395
396 if (sin->sin_addr.s_addr == htonl(INADDR_ANY)) {
397 ret = -EDESTADDRREQ;
398 goto out;
399 }
400
401 rs->rs_conn_addr = sin->sin_addr.s_addr;
402 rs->rs_conn_port = sin->sin_port;
403
404out:
405 release_sock(sk);
406 return ret;
407}
408
409static struct proto rds_proto = {
410 .name = "RDS",
411 .owner = THIS_MODULE,
412 .obj_size = sizeof(struct rds_sock),
413};
414
Alexey Dobriyan5708e862009-09-14 12:23:23 +0000415static const struct proto_ops rds_proto_ops = {
Andy Grover639b3212009-02-24 15:30:18 +0000416 .family = AF_RDS,
417 .owner = THIS_MODULE,
418 .release = rds_release,
419 .bind = rds_bind,
420 .connect = rds_connect,
421 .socketpair = sock_no_socketpair,
422 .accept = sock_no_accept,
423 .getname = rds_getname,
424 .poll = rds_poll,
425 .ioctl = rds_ioctl,
426 .listen = sock_no_listen,
427 .shutdown = sock_no_shutdown,
428 .setsockopt = rds_setsockopt,
429 .getsockopt = rds_getsockopt,
430 .sendmsg = rds_sendmsg,
431 .recvmsg = rds_recvmsg,
432 .mmap = sock_no_mmap,
433 .sendpage = sock_no_sendpage,
434};
435
436static int __rds_create(struct socket *sock, struct sock *sk, int protocol)
437{
Andy Grover639b3212009-02-24 15:30:18 +0000438 struct rds_sock *rs;
439
440 sock_init_data(sock, sk);
441 sock->ops = &rds_proto_ops;
442 sk->sk_protocol = protocol;
443
444 rs = rds_sk_to_rs(sk);
445 spin_lock_init(&rs->rs_lock);
446 rwlock_init(&rs->rs_recv_lock);
447 INIT_LIST_HEAD(&rs->rs_send_queue);
448 INIT_LIST_HEAD(&rs->rs_recv_queue);
449 INIT_LIST_HEAD(&rs->rs_notify_queue);
450 INIT_LIST_HEAD(&rs->rs_cong_list);
451 spin_lock_init(&rs->rs_rdma_lock);
452 rs->rs_rdma_keys = RB_ROOT;
453
David S. Millerefc3dbc2012-01-24 17:03:44 -0500454 spin_lock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000455 list_add_tail(&rs->rs_item, &rds_sock_list);
456 rds_sock_count++;
David S. Millerefc3dbc2012-01-24 17:03:44 -0500457 spin_unlock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000458
459 return 0;
460}
461
Eric Paris3f378b62009-11-05 22:18:14 -0800462static int rds_create(struct net *net, struct socket *sock, int protocol,
463 int kern)
Andy Grover639b3212009-02-24 15:30:18 +0000464{
465 struct sock *sk;
466
467 if (sock->type != SOCK_SEQPACKET || protocol)
468 return -ESOCKTNOSUPPORT;
469
Eric W. Biederman11aa9c22015-05-08 21:09:13 -0500470 sk = sk_alloc(net, AF_RDS, GFP_ATOMIC, &rds_proto, kern);
Andy Grover639b3212009-02-24 15:30:18 +0000471 if (!sk)
472 return -ENOMEM;
473
474 return __rds_create(sock, sk, protocol);
475}
476
477void rds_sock_addref(struct rds_sock *rs)
478{
479 sock_hold(rds_rs_to_sk(rs));
480}
481
482void rds_sock_put(struct rds_sock *rs)
483{
484 sock_put(rds_rs_to_sk(rs));
485}
486
Stephen Hemmingerec1b4cf2009-10-05 05:58:39 +0000487static const struct net_proto_family rds_family_ops = {
Andy Grover639b3212009-02-24 15:30:18 +0000488 .family = AF_RDS,
489 .create = rds_create,
490 .owner = THIS_MODULE,
491};
492
493static void rds_sock_inc_info(struct socket *sock, unsigned int len,
494 struct rds_info_iterator *iter,
495 struct rds_info_lengths *lens)
496{
497 struct rds_sock *rs;
Andy Grover639b3212009-02-24 15:30:18 +0000498 struct rds_incoming *inc;
Andy Grover639b3212009-02-24 15:30:18 +0000499 unsigned int total = 0;
500
501 len /= sizeof(struct rds_info_message);
502
David S. Millerefc3dbc2012-01-24 17:03:44 -0500503 spin_lock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000504
505 list_for_each_entry(rs, &rds_sock_list, rs_item) {
Andy Grover639b3212009-02-24 15:30:18 +0000506 read_lock(&rs->rs_recv_lock);
507
508 /* XXX too lazy to maintain counts.. */
509 list_for_each_entry(inc, &rs->rs_recv_queue, i_item) {
510 total++;
511 if (total <= len)
512 rds_inc_info_copy(inc, iter, inc->i_saddr,
513 rs->rs_bound_addr, 1);
514 }
515
516 read_unlock(&rs->rs_recv_lock);
517 }
518
David S. Millerefc3dbc2012-01-24 17:03:44 -0500519 spin_unlock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000520
521 lens->nr = total;
522 lens->each = sizeof(struct rds_info_message);
523}
524
525static void rds_sock_info(struct socket *sock, unsigned int len,
526 struct rds_info_iterator *iter,
527 struct rds_info_lengths *lens)
528{
529 struct rds_info_socket sinfo;
530 struct rds_sock *rs;
Andy Grover639b3212009-02-24 15:30:18 +0000531
532 len /= sizeof(struct rds_info_socket);
533
David S. Millerefc3dbc2012-01-24 17:03:44 -0500534 spin_lock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000535
536 if (len < rds_sock_count)
537 goto out;
538
539 list_for_each_entry(rs, &rds_sock_list, rs_item) {
540 sinfo.sndbuf = rds_sk_sndbuf(rs);
541 sinfo.rcvbuf = rds_sk_rcvbuf(rs);
542 sinfo.bound_addr = rs->rs_bound_addr;
543 sinfo.connected_addr = rs->rs_conn_addr;
544 sinfo.bound_port = rs->rs_bound_port;
545 sinfo.connected_port = rs->rs_conn_port;
546 sinfo.inum = sock_i_ino(rds_rs_to_sk(rs));
547
548 rds_info_copy(iter, &sinfo, sizeof(sinfo));
549 }
550
551out:
552 lens->nr = rds_sock_count;
553 lens->each = sizeof(struct rds_info_socket);
554
David S. Millerefc3dbc2012-01-24 17:03:44 -0500555 spin_unlock_bh(&rds_sock_lock);
Andy Grover639b3212009-02-24 15:30:18 +0000556}
557
Zach Brownef87b7e2010-07-09 12:26:20 -0700558static void rds_exit(void)
Andy Grover639b3212009-02-24 15:30:18 +0000559{
Andy Grover639b3212009-02-24 15:30:18 +0000560 sock_unregister(rds_family_ops.family);
561 proto_unregister(&rds_proto);
562 rds_conn_exit();
563 rds_cong_exit();
564 rds_sysctl_exit();
565 rds_threads_exit();
566 rds_stats_exit();
567 rds_page_exit();
568 rds_info_deregister_func(RDS_INFO_SOCKETS, rds_sock_info);
569 rds_info_deregister_func(RDS_INFO_RECV_MESSAGES, rds_sock_inc_info);
570}
571module_exit(rds_exit);
572
Zach Brownef87b7e2010-07-09 12:26:20 -0700573static int rds_init(void)
Andy Grover639b3212009-02-24 15:30:18 +0000574{
575 int ret;
576
577 ret = rds_conn_init();
578 if (ret)
579 goto out;
580 ret = rds_threads_init();
581 if (ret)
582 goto out_conn;
583 ret = rds_sysctl_init();
584 if (ret)
585 goto out_threads;
586 ret = rds_stats_init();
587 if (ret)
588 goto out_sysctl;
589 ret = proto_register(&rds_proto, 1);
590 if (ret)
591 goto out_stats;
592 ret = sock_register(&rds_family_ops);
593 if (ret)
594 goto out_proto;
595
596 rds_info_register_func(RDS_INFO_SOCKETS, rds_sock_info);
597 rds_info_register_func(RDS_INFO_RECV_MESSAGES, rds_sock_inc_info);
598
Andy Grover639b3212009-02-24 15:30:18 +0000599 goto out;
600
Andy Grover639b3212009-02-24 15:30:18 +0000601out_proto:
602 proto_unregister(&rds_proto);
603out_stats:
604 rds_stats_exit();
605out_sysctl:
606 rds_sysctl_exit();
607out_threads:
608 rds_threads_exit();
609out_conn:
610 rds_conn_exit();
611 rds_cong_exit();
612 rds_page_exit();
613out:
614 return ret;
615}
616module_init(rds_init);
617
618#define DRV_VERSION "4.0"
619#define DRV_RELDATE "Feb 12, 2009"
620
621MODULE_AUTHOR("Oracle Corporation <rds-devel@oss.oracle.com>");
622MODULE_DESCRIPTION("RDS: Reliable Datagram Sockets"
623 " v" DRV_VERSION " (" DRV_RELDATE ")");
624MODULE_VERSION(DRV_VERSION);
625MODULE_LICENSE("Dual BSD/GPL");
626MODULE_ALIAS_NETPROTO(PF_RDS);