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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / infiniband / ulp / ipoib / ipoib_main.c
blobb0bbddedebac21bcb51d42dc5ae346796b075e50
1 /*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 * $Id: ipoib_main.c 1377 2004-12-23 19:57:12Z roland $
35 */
36
37 #include "ipoib.h"
38
39 #include <linux/module.h>
40
41 #include <linux/init.h>
42 #include <linux/slab.h>
43 #include <linux/kernel.h>
44 <<<<<<< HEAD:drivers/infiniband/ulp/ipoib/ipoib_main.c
45 =======
46 #include <linux/vmalloc.h>
47 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/infiniband/ulp/ipoib/ipoib_main.c
48
49 #include <linux/if_arp.h> /* For ARPHRD_xxx */
50
51 #include <linux/ip.h>
52 #include <linux/in.h>
53
54 #include <net/dst.h>
55
56 MODULE_AUTHOR("Roland Dreier");
57 MODULE_DESCRIPTION("IP-over-InfiniBand net driver");
58 MODULE_LICENSE("Dual BSD/GPL");
59
60 int ipoib_sendq_size __read_mostly = IPOIB_TX_RING_SIZE;
61 int ipoib_recvq_size __read_mostly = IPOIB_RX_RING_SIZE;
62
63 module_param_named(send_queue_size, ipoib_sendq_size, int, 0444);
64 MODULE_PARM_DESC(send_queue_size, "Number of descriptors in send queue");
65 module_param_named(recv_queue_size, ipoib_recvq_size, int, 0444);
66 MODULE_PARM_DESC(recv_queue_size, "Number of descriptors in receive queue");
67
68 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
69 int ipoib_debug_level;
70
71 module_param_named(debug_level, ipoib_debug_level, int, 0644);
72 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
73 #endif
74
75 struct ipoib_path_iter {
76 struct net_device *dev;
77 struct ipoib_path path;
78 };
79
80 static const u8 ipv4_bcast_addr[] = {
81 0x00, 0xff, 0xff, 0xff,
82 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00,
83 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff
84 };
85
86 struct workqueue_struct *ipoib_workqueue;
87
88 struct ib_sa_client ipoib_sa_client;
89
90 static void ipoib_add_one(struct ib_device *device);
91 static void ipoib_remove_one(struct ib_device *device);
92
93 static struct ib_client ipoib_client = {
94 .name = "ipoib",
95 .add = ipoib_add_one,
96 .remove = ipoib_remove_one
97 };
98
99 int ipoib_open(struct net_device *dev)
100 {
101 struct ipoib_dev_priv *priv = netdev_priv(dev);
102
103 ipoib_dbg(priv, "bringing up interface\n");
104
105 napi_enable(&priv->napi);
106 set_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags);
107
108 if (ipoib_pkey_dev_delay_open(dev))
109 return 0;
110
111 if (ipoib_ib_dev_open(dev)) {
112 napi_disable(&priv->napi);
113 return -EINVAL;
114 }
115
116 if (ipoib_ib_dev_up(dev)) {
117 ipoib_ib_dev_stop(dev, 1);
118 napi_disable(&priv->napi);
119 return -EINVAL;
120 }
121
122 if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
123 struct ipoib_dev_priv *cpriv;
124
125 /* Bring up any child interfaces too */
126 mutex_lock(&priv->vlan_mutex);
127 list_for_each_entry(cpriv, &priv->child_intfs, list) {
128 int flags;
129
130 flags = cpriv->dev->flags;
131 if (flags & IFF_UP)
132 continue;
133
134 dev_change_flags(cpriv->dev, flags | IFF_UP);
135 }
136 mutex_unlock(&priv->vlan_mutex);
137 }
138
139 netif_start_queue(dev);
140
141 return 0;
142 }
143
144 static int ipoib_stop(struct net_device *dev)
145 {
146 struct ipoib_dev_priv *priv = netdev_priv(dev);
147
148 ipoib_dbg(priv, "stopping interface\n");
149
150 clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags);
151 napi_disable(&priv->napi);
152
153 netif_stop_queue(dev);
154
155 /*
156 * Now flush workqueue to make sure a scheduled task doesn't
157 * bring our internal state back up.
158 */
159 flush_workqueue(ipoib_workqueue);
160
161 ipoib_ib_dev_down(dev, 1);
162 ipoib_ib_dev_stop(dev, 1);
163
164 if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
165 struct ipoib_dev_priv *cpriv;
166
167 /* Bring down any child interfaces too */
168 mutex_lock(&priv->vlan_mutex);
169 list_for_each_entry(cpriv, &priv->child_intfs, list) {
170 int flags;
171
172 flags = cpriv->dev->flags;
173 if (!(flags & IFF_UP))
174 continue;
175
176 dev_change_flags(cpriv->dev, flags & ~IFF_UP);
177 }
178 mutex_unlock(&priv->vlan_mutex);
179 }
180
181 return 0;
182 }
183
184 static int ipoib_change_mtu(struct net_device *dev, int new_mtu)
185 {
186 struct ipoib_dev_priv *priv = netdev_priv(dev);
187
188 /* dev->mtu > 2K ==> connected mode */
189 if (ipoib_cm_admin_enabled(dev)) {
190 if (new_mtu > ipoib_cm_max_mtu(dev))
191 return -EINVAL;
192
193 if (new_mtu > priv->mcast_mtu)
194 ipoib_warn(priv, "mtu > %d will cause multicast packet drops.\n",
195 priv->mcast_mtu);
196
197 dev->mtu = new_mtu;
198 return 0;
199 }
200
201 if (new_mtu > IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN)
202 return -EINVAL;
203
204 priv->admin_mtu = new_mtu;
205
206 dev->mtu = min(priv->mcast_mtu, priv->admin_mtu);
207
208 return 0;
209 }
210
211 static struct ipoib_path *__path_find(struct net_device *dev, void *gid)
212 {
213 struct ipoib_dev_priv *priv = netdev_priv(dev);
214 struct rb_node *n = priv->path_tree.rb_node;
215 struct ipoib_path *path;
216 int ret;
217
218 while (n) {
219 path = rb_entry(n, struct ipoib_path, rb_node);
220
221 ret = memcmp(gid, path->pathrec.dgid.raw,
222 sizeof (union ib_gid));
223
224 if (ret < 0)
225 n = n->rb_left;
226 else if (ret > 0)
227 n = n->rb_right;
228 else
229 return path;
230 }
231
232 return NULL;
233 }
234
235 static int __path_add(struct net_device *dev, struct ipoib_path *path)
236 {
237 struct ipoib_dev_priv *priv = netdev_priv(dev);
238 struct rb_node **n = &priv->path_tree.rb_node;
239 struct rb_node *pn = NULL;
240 struct ipoib_path *tpath;
241 int ret;
242
243 while (*n) {
244 pn = *n;
245 tpath = rb_entry(pn, struct ipoib_path, rb_node);
246
247 ret = memcmp(path->pathrec.dgid.raw, tpath->pathrec.dgid.raw,
248 sizeof (union ib_gid));
249 if (ret < 0)
250 n = &pn->rb_left;
251 else if (ret > 0)
252 n = &pn->rb_right;
253 else
254 return -EEXIST;
255 }
256
257 rb_link_node(&path->rb_node, pn, n);
258 rb_insert_color(&path->rb_node, &priv->path_tree);
259
260 list_add_tail(&path->list, &priv->path_list);
261
262 return 0;
263 }
264
265 static void path_free(struct net_device *dev, struct ipoib_path *path)
266 {
267 struct ipoib_dev_priv *priv = netdev_priv(dev);
268 struct ipoib_neigh *neigh, *tn;
269 struct sk_buff *skb;
270 unsigned long flags;
271
272 while ((skb = __skb_dequeue(&path->queue)))
273 dev_kfree_skb_irq(skb);
274
275 spin_lock_irqsave(&priv->lock, flags);
276
277 list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) {
278 /*
279 * It's safe to call ipoib_put_ah() inside priv->lock
280 * here, because we know that path->ah will always
281 * hold one more reference, so ipoib_put_ah() will
282 * never do more than decrement the ref count.
283 */
284 if (neigh->ah)
285 ipoib_put_ah(neigh->ah);
286
287 ipoib_neigh_free(dev, neigh);
288 }
289
290 spin_unlock_irqrestore(&priv->lock, flags);
291
292 if (path->ah)
293 ipoib_put_ah(path->ah);
294
295 kfree(path);
296 }
297
298 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
299
300 struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev)
301 {
302 struct ipoib_path_iter *iter;
303
304 iter = kmalloc(sizeof *iter, GFP_KERNEL);
305 if (!iter)
306 return NULL;
307
308 iter->dev = dev;
309 memset(iter->path.pathrec.dgid.raw, 0, 16);
310
311 if (ipoib_path_iter_next(iter)) {
312 kfree(iter);
313 return NULL;
314 }
315
316 return iter;
317 }
318
319 int ipoib_path_iter_next(struct ipoib_path_iter *iter)
320 {
321 struct ipoib_dev_priv *priv = netdev_priv(iter->dev);
322 struct rb_node *n;
323 struct ipoib_path *path;
324 int ret = 1;
325
326 spin_lock_irq(&priv->lock);
327
328 n = rb_first(&priv->path_tree);
329
330 while (n) {
331 path = rb_entry(n, struct ipoib_path, rb_node);
332
333 if (memcmp(iter->path.pathrec.dgid.raw, path->pathrec.dgid.raw,
334 sizeof (union ib_gid)) < 0) {
335 iter->path = *path;
336 ret = 0;
337 break;
338 }
339
340 n = rb_next(n);
341 }
342
343 spin_unlock_irq(&priv->lock);
344
345 return ret;
346 }
347
348 void ipoib_path_iter_read(struct ipoib_path_iter *iter,
349 struct ipoib_path *path)
350 {
351 *path = iter->path;
352 }
353
354 #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
355
356 void ipoib_flush_paths(struct net_device *dev)
357 {
358 struct ipoib_dev_priv *priv = netdev_priv(dev);
359 struct ipoib_path *path, *tp;
360 LIST_HEAD(remove_list);
361
362 spin_lock_irq(&priv->tx_lock);
363 spin_lock(&priv->lock);
364
365 list_splice(&priv->path_list, &remove_list);
366 INIT_LIST_HEAD(&priv->path_list);
367
368 list_for_each_entry(path, &remove_list, list)
369 rb_erase(&path->rb_node, &priv->path_tree);
370
371 list_for_each_entry_safe(path, tp, &remove_list, list) {
372 if (path->query)
373 ib_sa_cancel_query(path->query_id, path->query);
374 spin_unlock(&priv->lock);
375 spin_unlock_irq(&priv->tx_lock);
376 wait_for_completion(&path->done);
377 path_free(dev, path);
378 spin_lock_irq(&priv->tx_lock);
379 spin_lock(&priv->lock);
380 }
381 spin_unlock(&priv->lock);
382 spin_unlock_irq(&priv->tx_lock);
383 }
384
385 static void path_rec_completion(int status,
386 struct ib_sa_path_rec *pathrec,
387 void *path_ptr)
388 {
389 struct ipoib_path *path = path_ptr;
390 struct net_device *dev = path->dev;
391 struct ipoib_dev_priv *priv = netdev_priv(dev);
392 struct ipoib_ah *ah = NULL;
393 struct ipoib_neigh *neigh, *tn;
394 struct sk_buff_head skqueue;
395 struct sk_buff *skb;
396 unsigned long flags;
397
398 if (!status)
399 ipoib_dbg(priv, "PathRec LID 0x%04x for GID " IPOIB_GID_FMT "\n",
400 be16_to_cpu(pathrec->dlid), IPOIB_GID_ARG(pathrec->dgid));
401 else
402 ipoib_dbg(priv, "PathRec status %d for GID " IPOIB_GID_FMT "\n",
403 status, IPOIB_GID_ARG(path->pathrec.dgid));
404
405 skb_queue_head_init(&skqueue);
406
407 if (!status) {
408 struct ib_ah_attr av;
409
410 if (!ib_init_ah_from_path(priv->ca, priv->port, pathrec, &av))
411 ah = ipoib_create_ah(dev, priv->pd, &av);
412 }
413
414 spin_lock_irqsave(&priv->lock, flags);
415
416 path->ah = ah;
417
418 if (ah) {
419 path->pathrec = *pathrec;
420
421 ipoib_dbg(priv, "created address handle %p for LID 0x%04x, SL %d\n",
422 ah, be16_to_cpu(pathrec->dlid), pathrec->sl);
423
424 while ((skb = __skb_dequeue(&path->queue)))
425 __skb_queue_tail(&skqueue, skb);
426
427 list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) {
428 kref_get(&path->ah->ref);
429 neigh->ah = path->ah;
430 memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw,
431 sizeof(union ib_gid));
432
433 if (ipoib_cm_enabled(dev, neigh->neighbour)) {
434 if (!ipoib_cm_get(neigh))
435 ipoib_cm_set(neigh, ipoib_cm_create_tx(dev,
436 path,
437 neigh));
438 if (!ipoib_cm_get(neigh)) {
439 list_del(&neigh->list);
440 if (neigh->ah)
441 ipoib_put_ah(neigh->ah);
442 ipoib_neigh_free(dev, neigh);
443 continue;
444 }
445 }
446
447 while ((skb = __skb_dequeue(&neigh->queue)))
448 __skb_queue_tail(&skqueue, skb);
449 }
450 }
451
452 path->query = NULL;
453 complete(&path->done);
454
455 spin_unlock_irqrestore(&priv->lock, flags);
456
457 while ((skb = __skb_dequeue(&skqueue))) {
458 skb->dev = dev;
459 if (dev_queue_xmit(skb))
460 ipoib_warn(priv, "dev_queue_xmit failed "
461 "to requeue packet\n");
462 }
463 }
464
465 static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid)
466 {
467 struct ipoib_dev_priv *priv = netdev_priv(dev);
468 struct ipoib_path *path;
469
470 if (!priv->broadcast)
471 return NULL;
472
473 path = kzalloc(sizeof *path, GFP_ATOMIC);
474 if (!path)
475 return NULL;
476
477 path->dev = dev;
478
479 skb_queue_head_init(&path->queue);
480
481 INIT_LIST_HEAD(&path->neigh_list);
482
483 memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid));
484 path->pathrec.sgid = priv->local_gid;
485 path->pathrec.pkey = cpu_to_be16(priv->pkey);
486 path->pathrec.numb_path = 1;
487 path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class;
488
489 return path;
490 }
491
492 static int path_rec_start(struct net_device *dev,
493 struct ipoib_path *path)
494 {
495 struct ipoib_dev_priv *priv = netdev_priv(dev);
496
497 ipoib_dbg(priv, "Start path record lookup for " IPOIB_GID_FMT "\n",
498 IPOIB_GID_ARG(path->pathrec.dgid));
499
500 init_completion(&path->done);
501
502 path->query_id =
503 ib_sa_path_rec_get(&ipoib_sa_client, priv->ca, priv->port,
504 &path->pathrec,
505 IB_SA_PATH_REC_DGID |
506 IB_SA_PATH_REC_SGID |
507 IB_SA_PATH_REC_NUMB_PATH |
508 IB_SA_PATH_REC_TRAFFIC_CLASS |
509 IB_SA_PATH_REC_PKEY,
510 1000, GFP_ATOMIC,
511 path_rec_completion,
512 path, &path->query);
513 if (path->query_id < 0) {
514 ipoib_warn(priv, "ib_sa_path_rec_get failed\n");
515 path->query = NULL;
516 return path->query_id;
517 }
518
519 return 0;
520 }
521
522 static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
523 {
524 struct ipoib_dev_priv *priv = netdev_priv(dev);
525 struct ipoib_path *path;
526 struct ipoib_neigh *neigh;
527
528 neigh = ipoib_neigh_alloc(skb->dst->neighbour, skb->dev);
529 if (!neigh) {
530 ++dev->stats.tx_dropped;
531 dev_kfree_skb_any(skb);
532 return;
533 }
534
535 /*
536 * We can only be called from ipoib_start_xmit, so we're
537 * inside tx_lock -- no need to save/restore flags.
538 */
539 spin_lock(&priv->lock);
540
541 path = __path_find(dev, skb->dst->neighbour->ha + 4);
542 if (!path) {
543 path = path_rec_create(dev, skb->dst->neighbour->ha + 4);
544 if (!path)
545 goto err_path;
546
547 __path_add(dev, path);
548 }
549
550 list_add_tail(&neigh->list, &path->neigh_list);
551
552 if (path->ah) {
553 kref_get(&path->ah->ref);
554 neigh->ah = path->ah;
555 memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw,
556 sizeof(union ib_gid));
557
558 if (ipoib_cm_enabled(dev, neigh->neighbour)) {
559 if (!ipoib_cm_get(neigh))
560 ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, path, neigh));
561 if (!ipoib_cm_get(neigh)) {
562 list_del(&neigh->list);
563 if (neigh->ah)
564 ipoib_put_ah(neigh->ah);
565 ipoib_neigh_free(dev, neigh);
566 goto err_drop;
567 }
568 if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE)
569 __skb_queue_tail(&neigh->queue, skb);
570 else {
571 ipoib_warn(priv, "queue length limit %d. Packet drop.\n",
572 skb_queue_len(&neigh->queue));
573 goto err_drop;
574 }
575 } else
576 ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb->dst->neighbour->ha));
577 } else {
578 neigh->ah = NULL;
579
580 if (!path->query && path_rec_start(dev, path))
581 goto err_list;
582
583 __skb_queue_tail(&neigh->queue, skb);
584 }
585
586 spin_unlock(&priv->lock);
587 return;
588
589 err_list:
590 list_del(&neigh->list);
591
592 err_path:
593 ipoib_neigh_free(dev, neigh);
594 err_drop:
595 ++dev->stats.tx_dropped;
596 dev_kfree_skb_any(skb);
597
598 spin_unlock(&priv->lock);
599 }
600
601 static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
602 {
603 struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
604
605 /* Look up path record for unicasts */
606 if (skb->dst->neighbour->ha[4] != 0xff) {
607 neigh_add_path(skb, dev);
608 return;
609 }
610
611 /* Add in the P_Key for multicasts */
612 skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
613 skb->dst->neighbour->ha[9] = priv->pkey & 0xff;
614 ipoib_mcast_send(dev, skb->dst->neighbour->ha + 4, skb);
615 }
616
617 static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
618 struct ipoib_pseudoheader *phdr)
619 {
620 struct ipoib_dev_priv *priv = netdev_priv(dev);
621 struct ipoib_path *path;
622
623 /*
624 * We can only be called from ipoib_start_xmit, so we're
625 * inside tx_lock -- no need to save/restore flags.
626 */
627 spin_lock(&priv->lock);
628
629 path = __path_find(dev, phdr->hwaddr + 4);
630 if (!path) {
631 path = path_rec_create(dev, phdr->hwaddr + 4);
632 if (path) {
633 /* put pseudoheader back on for next time */
634 skb_push(skb, sizeof *phdr);
635 __skb_queue_tail(&path->queue, skb);
636
637 if (path_rec_start(dev, path)) {
638 spin_unlock(&priv->lock);
639 path_free(dev, path);
640 return;
641 } else
642 __path_add(dev, path);
643 } else {
644 ++dev->stats.tx_dropped;
645 dev_kfree_skb_any(skb);
646 }
647
648 spin_unlock(&priv->lock);
649 return;
650 }
651
652 if (path->ah) {
653 ipoib_dbg(priv, "Send unicast ARP to %04x\n",
654 be16_to_cpu(path->pathrec.dlid));
655
656 ipoib_send(dev, skb, path->ah, IPOIB_QPN(phdr->hwaddr));
657 } else if ((path->query || !path_rec_start(dev, path)) &&
658 skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
659 /* put pseudoheader back on for next time */
660 skb_push(skb, sizeof *phdr);
661 __skb_queue_tail(&path->queue, skb);
662 } else {
663 ++dev->stats.tx_dropped;
664 dev_kfree_skb_any(skb);
665 }
666
667 spin_unlock(&priv->lock);
668 }
669
670 static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
671 {
672 struct ipoib_dev_priv *priv = netdev_priv(dev);
673 struct ipoib_neigh *neigh;
674 unsigned long flags;
675
676 if (unlikely(!spin_trylock_irqsave(&priv->tx_lock, flags)))
677 return NETDEV_TX_LOCKED;
678
679 if (likely(skb->dst && skb->dst->neighbour)) {
680 if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
681 ipoib_path_lookup(skb, dev);
682 goto out;
683 }
684
685 neigh = *to_ipoib_neigh(skb->dst->neighbour);
686
687 if (neigh->ah)
688 if (unlikely((memcmp(&neigh->dgid.raw,
689 skb->dst->neighbour->ha + 4,
690 sizeof(union ib_gid))) ||
691 (neigh->dev != dev))) {
692 spin_lock(&priv->lock);
693 /*
694 * It's safe to call ipoib_put_ah() inside
695 * priv->lock here, because we know that
696 * path->ah will always hold one more reference,
697 * so ipoib_put_ah() will never do more than
698 * decrement the ref count.
699 */
700 ipoib_put_ah(neigh->ah);
701 list_del(&neigh->list);
702 ipoib_neigh_free(dev, neigh);
703 spin_unlock(&priv->lock);
704 ipoib_path_lookup(skb, dev);
705 goto out;
706 }
707
708 if (ipoib_cm_get(neigh)) {
709 if (ipoib_cm_up(neigh)) {
710 ipoib_cm_send(dev, skb, ipoib_cm_get(neigh));
711 goto out;
712 }
713 } else if (neigh->ah) {
714 ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb->dst->neighbour->ha));
715 goto out;
716 }
717
718 if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
719 spin_lock(&priv->lock);
720 __skb_queue_tail(&neigh->queue, skb);
721 spin_unlock(&priv->lock);
722 } else {
723 ++dev->stats.tx_dropped;
724 dev_kfree_skb_any(skb);
725 }
726 } else {
727 struct ipoib_pseudoheader *phdr =
728 (struct ipoib_pseudoheader *) skb->data;
729 skb_pull(skb, sizeof *phdr);
730
731 if (phdr->hwaddr[4] == 0xff) {
732 /* Add in the P_Key for multicast*/
733 phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff;
734 phdr->hwaddr[9] = priv->pkey & 0xff;
735
736 ipoib_mcast_send(dev, phdr->hwaddr + 4, skb);
737 } else {
738 /* unicast GID -- should be ARP or RARP reply */
739
740 if ((be16_to_cpup((__be16 *) skb->data) != ETH_P_ARP) &&
741 (be16_to_cpup((__be16 *) skb->data) != ETH_P_RARP)) {
742 ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x "
743 IPOIB_GID_FMT "\n",
744 skb->dst ? "neigh" : "dst",
745 be16_to_cpup((__be16 *) skb->data),
746 IPOIB_QPN(phdr->hwaddr),
747 IPOIB_GID_RAW_ARG(phdr->hwaddr + 4));
748 dev_kfree_skb_any(skb);
749 ++dev->stats.tx_dropped;
750 goto out;
751 }
752
753 unicast_arp_send(skb, dev, phdr);
754 }
755 }
756
757 out:
758 spin_unlock_irqrestore(&priv->tx_lock, flags);
759
760 return NETDEV_TX_OK;
761 }
762
763 static void ipoib_timeout(struct net_device *dev)
764 {
765 struct ipoib_dev_priv *priv = netdev_priv(dev);
766
767 ipoib_warn(priv, "transmit timeout: latency %d msecs\n",
768 jiffies_to_msecs(jiffies - dev->trans_start));
769 ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n",
770 netif_queue_stopped(dev),
771 priv->tx_head, priv->tx_tail);
772 /* XXX reset QP, etc. */
773 }
774
775 static int ipoib_hard_header(struct sk_buff *skb,
776 struct net_device *dev,
777 unsigned short type,
778 const void *daddr, const void *saddr, unsigned len)
779 {
780 struct ipoib_header *header;
781
782 header = (struct ipoib_header *) skb_push(skb, sizeof *header);
783
784 header->proto = htons(type);
785 header->reserved = 0;
786
787 /*
788 * If we don't have a neighbour structure, stuff the
789 * destination address onto the front of the skb so we can
790 * figure out where to send the packet later.
791 */
792 if ((!skb->dst || !skb->dst->neighbour) && daddr) {
793 struct ipoib_pseudoheader *phdr =
794 (struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
795 memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
796 }
797
798 return 0;
799 }
800
801 static void ipoib_set_mcast_list(struct net_device *dev)
802 {
803 struct ipoib_dev_priv *priv = netdev_priv(dev);
804
805 if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) {
806 ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set");
807 return;
808 }
809
810 queue_work(ipoib_workqueue, &priv->restart_task);
811 }
812
813 static void ipoib_neigh_cleanup(struct neighbour *n)
814 {
815 struct ipoib_neigh *neigh;
816 struct ipoib_dev_priv *priv = netdev_priv(n->dev);
817 unsigned long flags;
818 struct ipoib_ah *ah = NULL;
819
820 neigh = *to_ipoib_neigh(n);
821 if (neigh)
822 priv = netdev_priv(neigh->dev);
823 else
824 return;
825 ipoib_dbg(priv,
826 "neigh_cleanup for %06x " IPOIB_GID_FMT "\n",
827 IPOIB_QPN(n->ha),
828 IPOIB_GID_RAW_ARG(n->ha + 4));
829
830 spin_lock_irqsave(&priv->lock, flags);
831
832 if (neigh->ah)
833 ah = neigh->ah;
834 list_del(&neigh->list);
835 ipoib_neigh_free(n->dev, neigh);
836
837 spin_unlock_irqrestore(&priv->lock, flags);
838
839 if (ah)
840 ipoib_put_ah(ah);
841 }
842
843 struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neighbour,
844 struct net_device *dev)
845 {
846 struct ipoib_neigh *neigh;
847
848 neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
849 if (!neigh)
850 return NULL;
851
852 neigh->neighbour = neighbour;
853 neigh->dev = dev;
854 *to_ipoib_neigh(neighbour) = neigh;
855 skb_queue_head_init(&neigh->queue);
856 ipoib_cm_set(neigh, NULL);
857
858 return neigh;
859 }
860
861 void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh)
862 {
863 struct sk_buff *skb;
864 *to_ipoib_neigh(neigh->neighbour) = NULL;
865 while ((skb = __skb_dequeue(&neigh->queue))) {
866 ++dev->stats.tx_dropped;
867 dev_kfree_skb_any(skb);
868 }
869 if (ipoib_cm_get(neigh))
870 ipoib_cm_destroy_tx(ipoib_cm_get(neigh));
871 kfree(neigh);
872 }
873
874 static int ipoib_neigh_setup_dev(struct net_device *dev, struct neigh_parms *parms)
875 {
876 parms->neigh_cleanup = ipoib_neigh_cleanup;
877
878 return 0;
879 }
880
881 int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
882 {
883 struct ipoib_dev_priv *priv = netdev_priv(dev);
884
885 /* Allocate RX/TX "rings" to hold queued skbs */
886 priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring,
887 GFP_KERNEL);
888 if (!priv->rx_ring) {
889 printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",
890 ca->name, ipoib_recvq_size);
891 goto out;
892 }
893
894 <<<<<<< HEAD:drivers/infiniband/ulp/ipoib/ipoib_main.c
895 priv->tx_ring = kzalloc(ipoib_sendq_size * sizeof *priv->tx_ring,
896 GFP_KERNEL);
897 =======
898 priv->tx_ring = vmalloc(ipoib_sendq_size * sizeof *priv->tx_ring);
899 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/infiniband/ulp/ipoib/ipoib_main.c
900 if (!priv->tx_ring) {
901 printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n",
902 ca->name, ipoib_sendq_size);
903 goto out_rx_ring_cleanup;
904 }
905 <<<<<<< HEAD:drivers/infiniband/ulp/ipoib/ipoib_main.c
906 =======
907 memset(priv->tx_ring, 0, ipoib_sendq_size * sizeof *priv->tx_ring);
908 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/infiniband/ulp/ipoib/ipoib_main.c
909
910 /* priv->tx_head, tx_tail & tx_outstanding are already 0 */
911
912 if (ipoib_ib_dev_init(dev, ca, port))
913 goto out_tx_ring_cleanup;
914
915 return 0;
916
917 out_tx_ring_cleanup:
918 <<<<<<< HEAD:drivers/infiniband/ulp/ipoib/ipoib_main.c
919 kfree(priv->tx_ring);
920 =======
921 vfree(priv->tx_ring);
922 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/infiniband/ulp/ipoib/ipoib_main.c
923
924 out_rx_ring_cleanup:
925 kfree(priv->rx_ring);
926
927 out:
928 return -ENOMEM;
929 }
930
931 void ipoib_dev_cleanup(struct net_device *dev)
932 {
933 struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv, *tcpriv;
934
935 ipoib_delete_debug_files(dev);
936
937 /* Delete any child interfaces first */
938 list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) {
939 unregister_netdev(cpriv->dev);
940 ipoib_dev_cleanup(cpriv->dev);
941 free_netdev(cpriv->dev);
942 }
943
944 ipoib_ib_dev_cleanup(dev);
945
946 kfree(priv->rx_ring);
947 <<<<<<< HEAD:drivers/infiniband/ulp/ipoib/ipoib_main.c
948 kfree(priv->tx_ring);
949 =======
950 vfree(priv->tx_ring);
951 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/infiniband/ulp/ipoib/ipoib_main.c
952
953 priv->rx_ring = NULL;
954 priv->tx_ring = NULL;
955 }
956
957 static const struct header_ops ipoib_header_ops = {
958 .create = ipoib_hard_header,
959 };
960
961 static void ipoib_setup(struct net_device *dev)
962 {
963 struct ipoib_dev_priv *priv = netdev_priv(dev);
964
965 dev->open = ipoib_open;
966 dev->stop = ipoib_stop;
967 dev->change_mtu = ipoib_change_mtu;
968 dev->hard_start_xmit = ipoib_start_xmit;
969 dev->tx_timeout = ipoib_timeout;
970 dev->header_ops = &ipoib_header_ops;
971 dev->set_multicast_list = ipoib_set_mcast_list;
972 dev->neigh_setup = ipoib_neigh_setup_dev;
973
974 netif_napi_add(dev, &priv->napi, ipoib_poll, 100);
975
976 dev->watchdog_timeo = HZ;
977
978 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
979
980 /*
981 * We add in INFINIBAND_ALEN to allow for the destination
982 * address "pseudoheader" for skbs without neighbour struct.
983 */
984 dev->hard_header_len = IPOIB_ENCAP_LEN + INFINIBAND_ALEN;
985 dev->addr_len = INFINIBAND_ALEN;
986 dev->type = ARPHRD_INFINIBAND;
987 dev->tx_queue_len = ipoib_sendq_size * 2;
988 dev->features = (NETIF_F_VLAN_CHALLENGED |
989 NETIF_F_LLTX |
990 NETIF_F_HIGHDMA);
991
992 /* MTU will be reset when mcast join happens */
993 dev->mtu = IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN;
994 priv->mcast_mtu = priv->admin_mtu = dev->mtu;
995
996 memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN);
997
998 netif_carrier_off(dev);
999
1000 priv->dev = dev;
1001
1002 spin_lock_init(&priv->lock);
1003 spin_lock_init(&priv->tx_lock);
1004
1005 mutex_init(&priv->mcast_mutex);
1006 mutex_init(&priv->vlan_mutex);
1007
1008 INIT_LIST_HEAD(&priv->path_list);
1009 INIT_LIST_HEAD(&priv->child_intfs);
1010 INIT_LIST_HEAD(&priv->dead_ahs);
1011 INIT_LIST_HEAD(&priv->multicast_list);
1012
1013 INIT_DELAYED_WORK(&priv->pkey_poll_task, ipoib_pkey_poll);
1014 INIT_WORK(&priv->pkey_event_task, ipoib_pkey_event);
1015 INIT_DELAYED_WORK(&priv->mcast_task, ipoib_mcast_join_task);
1016 INIT_WORK(&priv->flush_task, ipoib_ib_dev_flush);
1017 INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task);
1018 INIT_DELAYED_WORK(&priv->ah_reap_task, ipoib_reap_ah);
1019 }
1020
1021 struct ipoib_dev_priv *ipoib_intf_alloc(const char *name)
1022 {
1023 struct net_device *dev;
1024
1025 dev = alloc_netdev((int) sizeof (struct ipoib_dev_priv), name,
1026 ipoib_setup);
1027 if (!dev)
1028 return NULL;
1029
1030 return netdev_priv(dev);
1031 }
1032
1033 static ssize_t show_pkey(struct device *dev,
1034 struct device_attribute *attr, char *buf)
1035 {
1036 struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
1037
1038 return sprintf(buf, "0x%04x\n", priv->pkey);
1039 }
1040 static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
1041
1042 static ssize_t show_umcast(struct device *dev,
1043 struct device_attribute *attr, char *buf)
1044 {
1045 struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
1046
1047 return sprintf(buf, "%d\n", test_bit(IPOIB_FLAG_UMCAST, &priv->flags));
1048 }
1049
1050 static ssize_t set_umcast(struct device *dev,
1051 struct device_attribute *attr,
1052 const char *buf, size_t count)
1053 {
1054 struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
1055 unsigned long umcast_val = simple_strtoul(buf, NULL, 0);
1056
1057 if (umcast_val > 0) {
1058 set_bit(IPOIB_FLAG_UMCAST, &priv->flags);
1059 ipoib_warn(priv, "ignoring multicast groups joined directly "
1060 "by userspace\n");
1061 } else
1062 clear_bit(IPOIB_FLAG_UMCAST, &priv->flags);
1063
1064 return count;
1065 }
1066 static DEVICE_ATTR(umcast, S_IWUSR | S_IRUGO, show_umcast, set_umcast);
1067
1068 int ipoib_add_umcast_attr(struct net_device *dev)
1069 {
1070 return device_create_file(&dev->dev, &dev_attr_umcast);
1071 }
1072
1073 static ssize_t create_child(struct device *dev,
1074 struct device_attribute *attr,
1075 const char *buf, size_t count)
1076 {
1077 int pkey;
1078 int ret;
1079
1080 if (sscanf(buf, "%i", &pkey) != 1)
1081 return -EINVAL;
1082
1083 if (pkey < 0 || pkey > 0xffff)
1084 return -EINVAL;
1085
1086 /*
1087 * Set the full membership bit, so that we join the right
1088 * broadcast group, etc.
1089 */
1090 pkey |= 0x8000;
1091
1092 ret = ipoib_vlan_add(to_net_dev(dev), pkey);
1093
1094 return ret ? ret : count;
1095 }
1096 static DEVICE_ATTR(create_child, S_IWUGO, NULL, create_child);
1097
1098 static ssize_t delete_child(struct device *dev,
1099 struct device_attribute *attr,
1100 const char *buf, size_t count)
1101 {
1102 int pkey;
1103 int ret;
1104
1105 if (sscanf(buf, "%i", &pkey) != 1)
1106 return -EINVAL;
1107
1108 if (pkey < 0 || pkey > 0xffff)
1109 return -EINVAL;
1110
1111 ret = ipoib_vlan_delete(to_net_dev(dev), pkey);
1112
1113 return ret ? ret : count;
1114
1115 }
1116 static DEVICE_ATTR(delete_child, S_IWUGO, NULL, delete_child);
1117
1118 int ipoib_add_pkey_attr(struct net_device *dev)
1119 {
1120 return device_create_file(&dev->dev, &dev_attr_pkey);
1121 }
1122
1123 static struct net_device *ipoib_add_port(const char *format,
1124 struct ib_device *hca, u8 port)
1125 {
1126 struct ipoib_dev_priv *priv;
1127 int result = -ENOMEM;
1128
1129 priv = ipoib_intf_alloc(format);
1130 if (!priv)
1131 goto alloc_mem_failed;
1132
1133 SET_NETDEV_DEV(priv->dev, hca->dma_device);
1134
1135 result = ib_query_pkey(hca, port, 0, &priv->pkey);
1136 if (result) {
1137 printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n",
1138 hca->name, port, result);
1139 goto device_init_failed;
1140 }
1141
1142 /*
1143 * Set the full membership bit, so that we join the right
1144 * broadcast group, etc.
1145 */
1146 priv->pkey |= 0x8000;
1147
1148 priv->dev->broadcast[8] = priv->pkey >> 8;
1149 priv->dev->broadcast[9] = priv->pkey & 0xff;
1150
1151 result = ib_query_gid(hca, port, 0, &priv->local_gid);
1152 if (result) {
1153 printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n",
1154 hca->name, port, result);
1155 goto device_init_failed;
1156 } else
1157 memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid));
1158
1159
1160 result = ipoib_dev_init(priv->dev, hca, port);
1161 if (result < 0) {
1162 printk(KERN_WARNING "%s: failed to initialize port %d (ret = %d)\n",
1163 hca->name, port, result);
1164 goto device_init_failed;
1165 }
1166
1167 INIT_IB_EVENT_HANDLER(&priv->event_handler,
1168 priv->ca, ipoib_event);
1169 result = ib_register_event_handler(&priv->event_handler);
1170 if (result < 0) {
1171 printk(KERN_WARNING "%s: ib_register_event_handler failed for "
1172 "port %d (ret = %d)\n",
1173 hca->name, port, result);
1174 goto event_failed;
1175 }
1176
1177 result = register_netdev(priv->dev);
1178 if (result) {
1179 printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n",
1180 hca->name, port, result);
1181 goto register_failed;
1182 }
1183
1184 ipoib_create_debug_files(priv->dev);
1185
1186 if (ipoib_cm_add_mode_attr(priv->dev))
1187 goto sysfs_failed;
1188 if (ipoib_add_pkey_attr(priv->dev))
1189 goto sysfs_failed;
1190 if (ipoib_add_umcast_attr(priv->dev))
1191 goto sysfs_failed;
1192 if (device_create_file(&priv->dev->dev, &dev_attr_create_child))
1193 goto sysfs_failed;
1194 if (device_create_file(&priv->dev->dev, &dev_attr_delete_child))
1195 goto sysfs_failed;
1196
1197 return priv->dev;
1198
1199 sysfs_failed:
1200 ipoib_delete_debug_files(priv->dev);
1201 unregister_netdev(priv->dev);
1202
1203 register_failed:
1204 ib_unregister_event_handler(&priv->event_handler);
1205 flush_scheduled_work();
1206
1207 event_failed:
1208 ipoib_dev_cleanup(priv->dev);
1209
1210 device_init_failed:
1211 free_netdev(priv->dev);
1212
1213 alloc_mem_failed:
1214 return ERR_PTR(result);
1215 }
1216
1217 static void ipoib_add_one(struct ib_device *device)
1218 {
1219 struct list_head *dev_list;
1220 struct net_device *dev;
1221 struct ipoib_dev_priv *priv;
1222 int s, e, p;
1223
1224 if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
1225 return;
1226
1227 dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
1228 if (!dev_list)
1229 return;
1230
1231 INIT_LIST_HEAD(dev_list);
1232
1233 if (device->node_type == RDMA_NODE_IB_SWITCH) {
1234 s = 0;
1235 e = 0;
1236 } else {
1237 s = 1;
1238 e = device->phys_port_cnt;
1239 }
1240
1241 for (p = s; p <= e; ++p) {
1242 dev = ipoib_add_port("ib%d", device, p);
1243 if (!IS_ERR(dev)) {
1244 priv = netdev_priv(dev);
1245 list_add_tail(&priv->list, dev_list);
1246 }
1247 }
1248
1249 ib_set_client_data(device, &ipoib_client, dev_list);
1250 }
1251
1252 static void ipoib_remove_one(struct ib_device *device)
1253 {
1254 struct ipoib_dev_priv *priv, *tmp;
1255 struct list_head *dev_list;
1256
1257 if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
1258 return;
1259
1260 dev_list = ib_get_client_data(device, &ipoib_client);
1261
1262 list_for_each_entry_safe(priv, tmp, dev_list, list) {
1263 ib_unregister_event_handler(&priv->event_handler);
1264 flush_scheduled_work();
1265
1266 unregister_netdev(priv->dev);
1267 ipoib_dev_cleanup(priv->dev);
1268 free_netdev(priv->dev);
1269 }
1270
1271 kfree(dev_list);
1272 }
1273
1274 static int __init ipoib_init_module(void)
1275 {
1276 int ret;
1277
1278 ipoib_recvq_size = roundup_pow_of_two(ipoib_recvq_size);
1279 ipoib_recvq_size = min(ipoib_recvq_size, IPOIB_MAX_QUEUE_SIZE);
1280 ipoib_recvq_size = max(ipoib_recvq_size, IPOIB_MIN_QUEUE_SIZE);
1281
1282 ipoib_sendq_size = roundup_pow_of_two(ipoib_sendq_size);
1283 ipoib_sendq_size = min(ipoib_sendq_size, IPOIB_MAX_QUEUE_SIZE);
1284 ipoib_sendq_size = max(ipoib_sendq_size, IPOIB_MIN_QUEUE_SIZE);
1285 #ifdef CONFIG_INFINIBAND_IPOIB_CM
1286 ipoib_max_conn_qp = min(ipoib_max_conn_qp, IPOIB_CM_MAX_CONN_QP);
1287 #endif
1288
1289 ret = ipoib_register_debugfs();
1290 if (ret)
1291 return ret;
1292
1293 /*
1294 * We create our own workqueue mainly because we want to be
1295 * able to flush it when devices are being removed. We can't
1296 * use schedule_work()/flush_scheduled_work() because both
1297 * unregister_netdev() and linkwatch_event take the rtnl lock,
1298 * so flush_scheduled_work() can deadlock during device
1299 * removal.
1300 */
1301 ipoib_workqueue = create_singlethread_workqueue("ipoib");
1302 if (!ipoib_workqueue) {
1303 ret = -ENOMEM;
1304 goto err_fs;
1305 }
1306
1307 ib_sa_register_client(&ipoib_sa_client);
1308
1309 ret = ib_register_client(&ipoib_client);
1310 if (ret)
1311 goto err_sa;
1312
1313 return 0;
1314
1315 err_sa:
1316 ib_sa_unregister_client(&ipoib_sa_client);
1317 destroy_workqueue(ipoib_workqueue);
1318
1319 err_fs:
1320 ipoib_unregister_debugfs();
1321
1322 return ret;
1323 }
1324
1325 static void __exit ipoib_cleanup_module(void)
1326 {
1327 ib_unregister_client(&ipoib_client);
1328 ib_sa_unregister_client(&ipoib_sa_client);
1329 ipoib_unregister_debugfs();
1330 destroy_workqueue(ipoib_workqueue);
1331 }
1332
1333 module_init(ipoib_init_module);
1334 module_exit(ipoib_cleanup_module);
WRT350N Kernel Patches