Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. | |
2a1d9b7f RD |
3 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
4 | * Copyright (c) 2004 Voltaire, Inc. All rights reserved. | |
1da177e4 LT |
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_multicast.c 1362 2004-12-18 15:56:29Z roland $ | |
35 | */ | |
36 | ||
37 | #include <linux/skbuff.h> | |
38 | #include <linux/rtnetlink.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/in.h> | |
41 | #include <linux/igmp.h> | |
42 | #include <linux/inetdevice.h> | |
43 | #include <linux/delay.h> | |
44 | #include <linux/completion.h> | |
45 | ||
14c85021 ACM |
46 | #include <net/dst.h> |
47 | ||
1da177e4 LT |
48 | #include "ipoib.h" |
49 | ||
50 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG | |
51 | static int mcast_debug_level; | |
52 | ||
53 | module_param(mcast_debug_level, int, 0644); | |
54 | MODULE_PARM_DESC(mcast_debug_level, | |
55 | "Enable multicast debug tracing if > 0"); | |
56 | #endif | |
57 | ||
95ed644f | 58 | static DEFINE_MUTEX(mcast_mutex); |
1da177e4 LT |
59 | |
60 | /* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */ | |
61 | struct ipoib_mcast { | |
62 | struct ib_sa_mcmember_rec mcmember; | |
63 | struct ipoib_ah *ah; | |
64 | ||
65 | struct rb_node rb_node; | |
66 | struct list_head list; | |
67 | struct completion done; | |
68 | ||
69 | int query_id; | |
70 | struct ib_sa_query *query; | |
71 | ||
72 | unsigned long created; | |
73 | unsigned long backoff; | |
74 | ||
75 | unsigned long flags; | |
76 | unsigned char logcount; | |
77 | ||
78 | struct list_head neigh_list; | |
79 | ||
80 | struct sk_buff_head pkt_queue; | |
81 | ||
82 | struct net_device *dev; | |
83 | }; | |
84 | ||
85 | struct ipoib_mcast_iter { | |
86 | struct net_device *dev; | |
87 | union ib_gid mgid; | |
88 | unsigned long created; | |
89 | unsigned int queuelen; | |
90 | unsigned int complete; | |
91 | unsigned int send_only; | |
92 | }; | |
93 | ||
94 | static void ipoib_mcast_free(struct ipoib_mcast *mcast) | |
95 | { | |
96 | struct net_device *dev = mcast->dev; | |
97 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
98 | struct ipoib_neigh *neigh, *tmp; | |
99 | unsigned long flags; | |
b36f170b | 100 | int tx_dropped = 0; |
1da177e4 LT |
101 | |
102 | ipoib_dbg_mcast(netdev_priv(dev), | |
103 | "deleting multicast group " IPOIB_GID_FMT "\n", | |
104 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
105 | ||
106 | spin_lock_irqsave(&priv->lock, flags); | |
107 | ||
108 | list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) { | |
97460df3 EC |
109 | /* |
110 | * It's safe to call ipoib_put_ah() inside priv->lock | |
111 | * here, because we know that mcast->ah will always | |
112 | * hold one more reference, so ipoib_put_ah() will | |
113 | * never do more than decrement the ref count. | |
114 | */ | |
1da177e4 | 115 | if (neigh->ah) |
97460df3 | 116 | ipoib_put_ah(neigh->ah); |
d2e0655e | 117 | ipoib_neigh_free(neigh); |
1da177e4 LT |
118 | } |
119 | ||
120 | spin_unlock_irqrestore(&priv->lock, flags); | |
121 | ||
1da177e4 LT |
122 | if (mcast->ah) |
123 | ipoib_put_ah(mcast->ah); | |
124 | ||
b36f170b MT |
125 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
126 | ++tx_dropped; | |
8c608a32 | 127 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
b36f170b MT |
128 | } |
129 | ||
130 | spin_lock_irqsave(&priv->tx_lock, flags); | |
131 | priv->stats.tx_dropped += tx_dropped; | |
132 | spin_unlock_irqrestore(&priv->tx_lock, flags); | |
1da177e4 LT |
133 | |
134 | kfree(mcast); | |
135 | } | |
136 | ||
137 | static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev, | |
138 | int can_sleep) | |
139 | { | |
140 | struct ipoib_mcast *mcast; | |
141 | ||
de6eb66b | 142 | mcast = kzalloc(sizeof *mcast, can_sleep ? GFP_KERNEL : GFP_ATOMIC); |
1da177e4 LT |
143 | if (!mcast) |
144 | return NULL; | |
145 | ||
1da177e4 LT |
146 | mcast->dev = dev; |
147 | mcast->created = jiffies; | |
ce5b65cc | 148 | mcast->backoff = 1; |
1da177e4 LT |
149 | |
150 | INIT_LIST_HEAD(&mcast->list); | |
151 | INIT_LIST_HEAD(&mcast->neigh_list); | |
152 | skb_queue_head_init(&mcast->pkt_queue); | |
153 | ||
1da177e4 LT |
154 | return mcast; |
155 | } | |
156 | ||
37c22a77 | 157 | static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid) |
1da177e4 LT |
158 | { |
159 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
160 | struct rb_node *n = priv->multicast_tree.rb_node; | |
161 | ||
162 | while (n) { | |
163 | struct ipoib_mcast *mcast; | |
164 | int ret; | |
165 | ||
166 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); | |
167 | ||
37c22a77 | 168 | ret = memcmp(mgid, mcast->mcmember.mgid.raw, |
1da177e4 LT |
169 | sizeof (union ib_gid)); |
170 | if (ret < 0) | |
171 | n = n->rb_left; | |
172 | else if (ret > 0) | |
173 | n = n->rb_right; | |
174 | else | |
175 | return mcast; | |
176 | } | |
177 | ||
178 | return NULL; | |
179 | } | |
180 | ||
181 | static int __ipoib_mcast_add(struct net_device *dev, struct ipoib_mcast *mcast) | |
182 | { | |
183 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
184 | struct rb_node **n = &priv->multicast_tree.rb_node, *pn = NULL; | |
185 | ||
186 | while (*n) { | |
187 | struct ipoib_mcast *tmcast; | |
188 | int ret; | |
189 | ||
190 | pn = *n; | |
191 | tmcast = rb_entry(pn, struct ipoib_mcast, rb_node); | |
192 | ||
193 | ret = memcmp(mcast->mcmember.mgid.raw, tmcast->mcmember.mgid.raw, | |
194 | sizeof (union ib_gid)); | |
195 | if (ret < 0) | |
196 | n = &pn->rb_left; | |
197 | else if (ret > 0) | |
198 | n = &pn->rb_right; | |
199 | else | |
200 | return -EEXIST; | |
201 | } | |
202 | ||
203 | rb_link_node(&mcast->rb_node, pn, n); | |
204 | rb_insert_color(&mcast->rb_node, &priv->multicast_tree); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast, | |
210 | struct ib_sa_mcmember_rec *mcmember) | |
211 | { | |
212 | struct net_device *dev = mcast->dev; | |
213 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
7343b231 | 214 | struct ipoib_ah *ah; |
1da177e4 LT |
215 | int ret; |
216 | ||
217 | mcast->mcmember = *mcmember; | |
218 | ||
219 | /* Set the cached Q_Key before we attach if it's the broadcast group */ | |
220 | if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4, | |
221 | sizeof (union ib_gid))) { | |
222 | priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey); | |
223 | priv->tx_wr.wr.ud.remote_qkey = priv->qkey; | |
224 | } | |
225 | ||
226 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
227 | if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { | |
228 | ipoib_warn(priv, "multicast group " IPOIB_GID_FMT | |
229 | " already attached\n", | |
230 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid), | |
236 | &mcast->mcmember.mgid); | |
237 | if (ret < 0) { | |
238 | ipoib_warn(priv, "couldn't attach QP to multicast group " | |
239 | IPOIB_GID_FMT "\n", | |
240 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
241 | ||
242 | clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags); | |
243 | return ret; | |
244 | } | |
245 | } | |
246 | ||
247 | { | |
248 | struct ib_ah_attr av = { | |
249 | .dlid = be16_to_cpu(mcast->mcmember.mlid), | |
250 | .port_num = priv->port, | |
251 | .sl = mcast->mcmember.sl, | |
252 | .ah_flags = IB_AH_GRH, | |
bf6a9e31 | 253 | .static_rate = mcast->mcmember.rate, |
1da177e4 LT |
254 | .grh = { |
255 | .flow_label = be32_to_cpu(mcast->mcmember.flow_label), | |
256 | .hop_limit = mcast->mcmember.hop_limit, | |
257 | .sgid_index = 0, | |
258 | .traffic_class = mcast->mcmember.traffic_class | |
259 | } | |
260 | }; | |
1da177e4 LT |
261 | av.grh.dgid = mcast->mcmember.mgid; |
262 | ||
7343b231 EC |
263 | ah = ipoib_create_ah(dev, priv->pd, &av); |
264 | if (!ah) { | |
1da177e4 LT |
265 | ipoib_warn(priv, "ib_address_create failed\n"); |
266 | } else { | |
624d01f8 OG |
267 | spin_lock_irq(&priv->lock); |
268 | mcast->ah = ah; | |
269 | spin_unlock_irq(&priv->lock); | |
270 | ||
1da177e4 LT |
271 | ipoib_dbg_mcast(priv, "MGID " IPOIB_GID_FMT |
272 | " AV %p, LID 0x%04x, SL %d\n", | |
273 | IPOIB_GID_ARG(mcast->mcmember.mgid), | |
274 | mcast->ah->ah, | |
275 | be16_to_cpu(mcast->mcmember.mlid), | |
276 | mcast->mcmember.sl); | |
277 | } | |
278 | } | |
279 | ||
280 | /* actually send any queued packets */ | |
b36f170b | 281 | spin_lock_irq(&priv->tx_lock); |
1da177e4 LT |
282 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
283 | struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue); | |
b36f170b | 284 | spin_unlock_irq(&priv->tx_lock); |
1da177e4 LT |
285 | |
286 | skb->dev = dev; | |
287 | ||
288 | if (!skb->dst || !skb->dst->neighbour) { | |
289 | /* put pseudoheader back on for next time */ | |
290 | skb_push(skb, sizeof (struct ipoib_pseudoheader)); | |
291 | } | |
292 | ||
293 | if (dev_queue_xmit(skb)) | |
294 | ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n"); | |
b36f170b | 295 | spin_lock_irq(&priv->tx_lock); |
1da177e4 | 296 | } |
b36f170b | 297 | spin_unlock_irq(&priv->tx_lock); |
1da177e4 LT |
298 | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static void | |
303 | ipoib_mcast_sendonly_join_complete(int status, | |
304 | struct ib_sa_mcmember_rec *mcmember, | |
305 | void *mcast_ptr) | |
306 | { | |
307 | struct ipoib_mcast *mcast = mcast_ptr; | |
308 | struct net_device *dev = mcast->dev; | |
b36f170b | 309 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
1da177e4 LT |
310 | |
311 | if (!status) | |
312 | ipoib_mcast_join_finish(mcast, mcmember); | |
313 | else { | |
314 | if (mcast->logcount++ < 20) | |
315 | ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for " | |
316 | IPOIB_GID_FMT ", status %d\n", | |
317 | IPOIB_GID_ARG(mcast->mcmember.mgid), status); | |
318 | ||
319 | /* Flush out any queued packets */ | |
b36f170b MT |
320 | spin_lock_irq(&priv->tx_lock); |
321 | while (!skb_queue_empty(&mcast->pkt_queue)) { | |
322 | ++priv->stats.tx_dropped; | |
8c608a32 | 323 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
b36f170b MT |
324 | } |
325 | spin_unlock_irq(&priv->tx_lock); | |
1da177e4 LT |
326 | |
327 | /* Clear the busy flag so we try again */ | |
328 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
c11bd42a | 329 | mcast->query = NULL; |
1da177e4 LT |
330 | } |
331 | ||
332 | complete(&mcast->done); | |
333 | } | |
334 | ||
335 | static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast) | |
336 | { | |
337 | struct net_device *dev = mcast->dev; | |
338 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
339 | struct ib_sa_mcmember_rec rec = { | |
340 | #if 0 /* Some SMs don't support send-only yet */ | |
341 | .join_state = 4 | |
342 | #else | |
343 | .join_state = 1 | |
344 | #endif | |
345 | }; | |
346 | int ret = 0; | |
347 | ||
348 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { | |
349 | ipoib_dbg_mcast(priv, "device shutting down, no multicast joins\n"); | |
350 | return -ENODEV; | |
351 | } | |
352 | ||
353 | if (test_and_set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) { | |
354 | ipoib_dbg_mcast(priv, "multicast entry busy, skipping\n"); | |
355 | return -EBUSY; | |
356 | } | |
357 | ||
358 | rec.mgid = mcast->mcmember.mgid; | |
359 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 360 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 | 361 | |
de922487 MT |
362 | init_completion(&mcast->done); |
363 | ||
c1a0b23b | 364 | ret = ib_sa_mcmember_rec_set(&ipoib_sa_client, priv->ca, priv->port, &rec, |
1da177e4 LT |
365 | IB_SA_MCMEMBER_REC_MGID | |
366 | IB_SA_MCMEMBER_REC_PORT_GID | | |
367 | IB_SA_MCMEMBER_REC_PKEY | | |
368 | IB_SA_MCMEMBER_REC_JOIN_STATE, | |
369 | 1000, GFP_ATOMIC, | |
370 | ipoib_mcast_sendonly_join_complete, | |
371 | mcast, &mcast->query); | |
372 | if (ret < 0) { | |
373 | ipoib_warn(priv, "ib_sa_mcmember_rec_set failed (ret = %d)\n", | |
374 | ret); | |
375 | } else { | |
376 | ipoib_dbg_mcast(priv, "no multicast record for " IPOIB_GID_FMT | |
377 | ", starting join\n", | |
378 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
379 | ||
380 | mcast->query_id = ret; | |
381 | } | |
382 | ||
383 | return ret; | |
384 | } | |
385 | ||
386 | static void ipoib_mcast_join_complete(int status, | |
387 | struct ib_sa_mcmember_rec *mcmember, | |
388 | void *mcast_ptr) | |
389 | { | |
390 | struct ipoib_mcast *mcast = mcast_ptr; | |
391 | struct net_device *dev = mcast->dev; | |
392 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
393 | ||
394 | ipoib_dbg_mcast(priv, "join completion for " IPOIB_GID_FMT | |
395 | " (status %d)\n", | |
396 | IPOIB_GID_ARG(mcast->mcmember.mgid), status); | |
397 | ||
398 | if (!status && !ipoib_mcast_join_finish(mcast, mcmember)) { | |
ce5b65cc | 399 | mcast->backoff = 1; |
95ed644f | 400 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
401 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
402 | queue_work(ipoib_workqueue, &priv->mcast_task); | |
95ed644f | 403 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
404 | complete(&mcast->done); |
405 | return; | |
406 | } | |
407 | ||
408 | if (status == -EINTR) { | |
409 | complete(&mcast->done); | |
410 | return; | |
411 | } | |
412 | ||
413 | if (status && mcast->logcount++ < 20) { | |
414 | if (status == -ETIMEDOUT || status == -EINTR) { | |
415 | ipoib_dbg_mcast(priv, "multicast join failed for " IPOIB_GID_FMT | |
416 | ", status %d\n", | |
417 | IPOIB_GID_ARG(mcast->mcmember.mgid), | |
418 | status); | |
419 | } else { | |
420 | ipoib_warn(priv, "multicast join failed for " | |
421 | IPOIB_GID_FMT ", status %d\n", | |
422 | IPOIB_GID_ARG(mcast->mcmember.mgid), | |
423 | status); | |
424 | } | |
425 | } | |
426 | ||
427 | mcast->backoff *= 2; | |
428 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) | |
429 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; | |
430 | ||
9acf6a85 MT |
431 | mutex_lock(&mcast_mutex); |
432 | ||
433 | spin_lock_irq(&priv->lock); | |
1da177e4 LT |
434 | mcast->query = NULL; |
435 | ||
1da177e4 LT |
436 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) { |
437 | if (status == -ETIMEDOUT) | |
438 | queue_work(ipoib_workqueue, &priv->mcast_task); | |
439 | else | |
440 | queue_delayed_work(ipoib_workqueue, &priv->mcast_task, | |
441 | mcast->backoff * HZ); | |
442 | } else | |
443 | complete(&mcast->done); | |
9acf6a85 | 444 | spin_unlock_irq(&priv->lock); |
95ed644f | 445 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
446 | |
447 | return; | |
448 | } | |
449 | ||
450 | static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast, | |
451 | int create) | |
452 | { | |
453 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
454 | struct ib_sa_mcmember_rec rec = { | |
455 | .join_state = 1 | |
456 | }; | |
457 | ib_sa_comp_mask comp_mask; | |
458 | int ret = 0; | |
459 | ||
460 | ipoib_dbg_mcast(priv, "joining MGID " IPOIB_GID_FMT "\n", | |
461 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
462 | ||
463 | rec.mgid = mcast->mcmember.mgid; | |
464 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 465 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 LT |
466 | |
467 | comp_mask = | |
468 | IB_SA_MCMEMBER_REC_MGID | | |
469 | IB_SA_MCMEMBER_REC_PORT_GID | | |
470 | IB_SA_MCMEMBER_REC_PKEY | | |
471 | IB_SA_MCMEMBER_REC_JOIN_STATE; | |
472 | ||
473 | if (create) { | |
474 | comp_mask |= | |
d0df6d6d RD |
475 | IB_SA_MCMEMBER_REC_QKEY | |
476 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
477 | IB_SA_MCMEMBER_REC_MTU | | |
478 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS | | |
479 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | | |
480 | IB_SA_MCMEMBER_REC_RATE | | |
481 | IB_SA_MCMEMBER_REC_SL | | |
482 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
483 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
1da177e4 LT |
484 | |
485 | rec.qkey = priv->broadcast->mcmember.qkey; | |
d0df6d6d RD |
486 | rec.mtu_selector = IB_SA_EQ; |
487 | rec.mtu = priv->broadcast->mcmember.mtu; | |
488 | rec.traffic_class = priv->broadcast->mcmember.traffic_class; | |
489 | rec.rate_selector = IB_SA_EQ; | |
490 | rec.rate = priv->broadcast->mcmember.rate; | |
1da177e4 LT |
491 | rec.sl = priv->broadcast->mcmember.sl; |
492 | rec.flow_label = priv->broadcast->mcmember.flow_label; | |
d0df6d6d | 493 | rec.hop_limit = priv->broadcast->mcmember.hop_limit; |
1da177e4 LT |
494 | } |
495 | ||
de922487 MT |
496 | init_completion(&mcast->done); |
497 | ||
c1a0b23b MT |
498 | ret = ib_sa_mcmember_rec_set(&ipoib_sa_client, priv->ca, priv->port, |
499 | &rec, comp_mask, mcast->backoff * 1000, | |
500 | GFP_ATOMIC, ipoib_mcast_join_complete, | |
1da177e4 LT |
501 | mcast, &mcast->query); |
502 | ||
503 | if (ret < 0) { | |
504 | ipoib_warn(priv, "ib_sa_mcmember_rec_set failed, status %d\n", ret); | |
505 | ||
506 | mcast->backoff *= 2; | |
507 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) | |
508 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; | |
509 | ||
95ed644f | 510 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
511 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
512 | queue_delayed_work(ipoib_workqueue, | |
513 | &priv->mcast_task, | |
ce5b65cc | 514 | mcast->backoff * HZ); |
95ed644f | 515 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
516 | } else |
517 | mcast->query_id = ret; | |
518 | } | |
519 | ||
520 | void ipoib_mcast_join_task(void *dev_ptr) | |
521 | { | |
522 | struct net_device *dev = dev_ptr; | |
523 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
524 | ||
525 | if (!test_bit(IPOIB_MCAST_RUN, &priv->flags)) | |
526 | return; | |
527 | ||
528 | if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid)) | |
529 | ipoib_warn(priv, "ib_gid_entry_get() failed\n"); | |
530 | else | |
531 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); | |
532 | ||
533 | { | |
534 | struct ib_port_attr attr; | |
535 | ||
536 | if (!ib_query_port(priv->ca, priv->port, &attr)) { | |
537 | priv->local_lid = attr.lid; | |
538 | priv->local_rate = attr.active_speed * | |
539 | ib_width_enum_to_int(attr.active_width); | |
540 | } else | |
c1a0b23b | 541 | ipoib_warn(priv, "ib_query_port failed\n"); |
1da177e4 LT |
542 | } |
543 | ||
544 | if (!priv->broadcast) { | |
20b83382 RD |
545 | struct ipoib_mcast *broadcast; |
546 | ||
547 | broadcast = ipoib_mcast_alloc(dev, 1); | |
548 | if (!broadcast) { | |
1da177e4 | 549 | ipoib_warn(priv, "failed to allocate broadcast group\n"); |
95ed644f | 550 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
551 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
552 | queue_delayed_work(ipoib_workqueue, | |
553 | &priv->mcast_task, HZ); | |
95ed644f | 554 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
555 | return; |
556 | } | |
557 | ||
20b83382 RD |
558 | spin_lock_irq(&priv->lock); |
559 | memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4, | |
1da177e4 | 560 | sizeof (union ib_gid)); |
20b83382 | 561 | priv->broadcast = broadcast; |
1da177e4 | 562 | |
1da177e4 LT |
563 | __ipoib_mcast_add(dev, priv->broadcast); |
564 | spin_unlock_irq(&priv->lock); | |
565 | } | |
566 | ||
567 | if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { | |
568 | ipoib_mcast_join(dev, priv->broadcast, 0); | |
569 | return; | |
570 | } | |
571 | ||
572 | while (1) { | |
573 | struct ipoib_mcast *mcast = NULL; | |
574 | ||
575 | spin_lock_irq(&priv->lock); | |
576 | list_for_each_entry(mcast, &priv->multicast_list, list) { | |
577 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) | |
578 | && !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags) | |
579 | && !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { | |
580 | /* Found the next unjoined group */ | |
581 | break; | |
582 | } | |
583 | } | |
584 | spin_unlock_irq(&priv->lock); | |
585 | ||
586 | if (&mcast->list == &priv->multicast_list) { | |
587 | /* All done */ | |
588 | break; | |
589 | } | |
590 | ||
591 | ipoib_mcast_join(dev, mcast, 1); | |
592 | return; | |
593 | } | |
594 | ||
595 | priv->mcast_mtu = ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu) - | |
596 | IPOIB_ENCAP_LEN; | |
597 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); | |
598 | ||
599 | ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n"); | |
600 | ||
601 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); | |
602 | netif_carrier_on(dev); | |
603 | } | |
604 | ||
605 | int ipoib_mcast_start_thread(struct net_device *dev) | |
606 | { | |
607 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
608 | ||
609 | ipoib_dbg_mcast(priv, "starting multicast thread\n"); | |
610 | ||
95ed644f | 611 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
612 | if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags)) |
613 | queue_work(ipoib_workqueue, &priv->mcast_task); | |
95ed644f | 614 | mutex_unlock(&mcast_mutex); |
1da177e4 | 615 | |
479a0796 MT |
616 | spin_lock_irq(&priv->lock); |
617 | set_bit(IPOIB_MCAST_STARTED, &priv->flags); | |
618 | spin_unlock_irq(&priv->lock); | |
619 | ||
1da177e4 LT |
620 | return 0; |
621 | } | |
622 | ||
f2de3b06 EC |
623 | static void wait_for_mcast_join(struct ipoib_dev_priv *priv, |
624 | struct ipoib_mcast *mcast) | |
625 | { | |
626 | spin_lock_irq(&priv->lock); | |
627 | if (mcast && mcast->query) { | |
628 | ib_sa_cancel_query(mcast->query_id, mcast->query); | |
629 | mcast->query = NULL; | |
630 | spin_unlock_irq(&priv->lock); | |
631 | ipoib_dbg_mcast(priv, "waiting for MGID " IPOIB_GID_FMT "\n", | |
632 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
633 | wait_for_completion(&mcast->done); | |
634 | } | |
635 | else | |
636 | spin_unlock_irq(&priv->lock); | |
637 | } | |
638 | ||
8d2cae06 | 639 | int ipoib_mcast_stop_thread(struct net_device *dev, int flush) |
1da177e4 LT |
640 | { |
641 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
642 | struct ipoib_mcast *mcast; | |
643 | ||
644 | ipoib_dbg_mcast(priv, "stopping multicast thread\n"); | |
645 | ||
479a0796 MT |
646 | spin_lock_irq(&priv->lock); |
647 | clear_bit(IPOIB_MCAST_STARTED, &priv->flags); | |
648 | spin_unlock_irq(&priv->lock); | |
649 | ||
95ed644f | 650 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
651 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); |
652 | cancel_delayed_work(&priv->mcast_task); | |
95ed644f | 653 | mutex_unlock(&mcast_mutex); |
1da177e4 | 654 | |
8d2cae06 RD |
655 | if (flush) |
656 | flush_workqueue(ipoib_workqueue); | |
1da177e4 | 657 | |
f2de3b06 | 658 | wait_for_mcast_join(priv, priv->broadcast); |
1da177e4 | 659 | |
f2de3b06 EC |
660 | list_for_each_entry(mcast, &priv->multicast_list, list) |
661 | wait_for_mcast_join(priv, mcast); | |
1da177e4 LT |
662 | |
663 | return 0; | |
664 | } | |
665 | ||
666 | static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) | |
667 | { | |
668 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
669 | struct ib_sa_mcmember_rec rec = { | |
670 | .join_state = 1 | |
671 | }; | |
672 | int ret = 0; | |
673 | ||
674 | if (!test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) | |
675 | return 0; | |
676 | ||
677 | ipoib_dbg_mcast(priv, "leaving MGID " IPOIB_GID_FMT "\n", | |
678 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
679 | ||
680 | rec.mgid = mcast->mcmember.mgid; | |
681 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 682 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 LT |
683 | |
684 | /* Remove ourselves from the multicast group */ | |
685 | ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid), | |
686 | &mcast->mcmember.mgid); | |
687 | if (ret) | |
688 | ipoib_warn(priv, "ipoib_mcast_detach failed (result = %d)\n", ret); | |
689 | ||
690 | /* | |
691 | * Just make one shot at leaving and don't wait for a reply; | |
692 | * if we fail, too bad. | |
693 | */ | |
c1a0b23b | 694 | ret = ib_sa_mcmember_rec_delete(&ipoib_sa_client, priv->ca, priv->port, &rec, |
1da177e4 LT |
695 | IB_SA_MCMEMBER_REC_MGID | |
696 | IB_SA_MCMEMBER_REC_PORT_GID | | |
697 | IB_SA_MCMEMBER_REC_PKEY | | |
698 | IB_SA_MCMEMBER_REC_JOIN_STATE, | |
699 | 0, GFP_ATOMIC, NULL, | |
700 | mcast, &mcast->query); | |
701 | if (ret < 0) | |
702 | ipoib_warn(priv, "ib_sa_mcmember_rec_delete failed " | |
703 | "for leave (result = %d)\n", ret); | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
37c22a77 | 708 | void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb) |
1da177e4 LT |
709 | { |
710 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
711 | struct ipoib_mcast *mcast; | |
712 | ||
713 | /* | |
714 | * We can only be called from ipoib_start_xmit, so we're | |
715 | * inside tx_lock -- no need to save/restore flags. | |
716 | */ | |
717 | spin_lock(&priv->lock); | |
718 | ||
20b83382 RD |
719 | if (!test_bit(IPOIB_MCAST_STARTED, &priv->flags) || |
720 | !priv->broadcast || | |
721 | !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { | |
479a0796 MT |
722 | ++priv->stats.tx_dropped; |
723 | dev_kfree_skb_any(skb); | |
724 | goto unlock; | |
725 | } | |
726 | ||
1da177e4 LT |
727 | mcast = __ipoib_mcast_find(dev, mgid); |
728 | if (!mcast) { | |
729 | /* Let's create a new send only group now */ | |
730 | ipoib_dbg_mcast(priv, "setting up send only multicast group for " | |
37c22a77 | 731 | IPOIB_GID_FMT "\n", IPOIB_GID_RAW_ARG(mgid)); |
1da177e4 LT |
732 | |
733 | mcast = ipoib_mcast_alloc(dev, 0); | |
734 | if (!mcast) { | |
735 | ipoib_warn(priv, "unable to allocate memory for " | |
736 | "multicast structure\n"); | |
b36f170b | 737 | ++priv->stats.tx_dropped; |
1da177e4 LT |
738 | dev_kfree_skb_any(skb); |
739 | goto out; | |
740 | } | |
741 | ||
742 | set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags); | |
37c22a77 | 743 | memcpy(mcast->mcmember.mgid.raw, mgid, sizeof (union ib_gid)); |
1da177e4 LT |
744 | __ipoib_mcast_add(dev, mcast); |
745 | list_add_tail(&mcast->list, &priv->multicast_list); | |
746 | } | |
747 | ||
748 | if (!mcast->ah) { | |
749 | if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE) | |
750 | skb_queue_tail(&mcast->pkt_queue, skb); | |
b36f170b MT |
751 | else { |
752 | ++priv->stats.tx_dropped; | |
1da177e4 | 753 | dev_kfree_skb_any(skb); |
b36f170b | 754 | } |
1da177e4 LT |
755 | |
756 | if (mcast->query) | |
757 | ipoib_dbg_mcast(priv, "no address vector, " | |
758 | "but multicast join already started\n"); | |
759 | else if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) | |
760 | ipoib_mcast_sendonly_join(mcast); | |
761 | ||
762 | /* | |
763 | * If lookup completes between here and out:, don't | |
764 | * want to send packet twice. | |
765 | */ | |
766 | mcast = NULL; | |
767 | } | |
768 | ||
769 | out: | |
770 | if (mcast && mcast->ah) { | |
771 | if (skb->dst && | |
772 | skb->dst->neighbour && | |
773 | !*to_ipoib_neigh(skb->dst->neighbour)) { | |
d2e0655e | 774 | struct ipoib_neigh *neigh = ipoib_neigh_alloc(skb->dst->neighbour); |
1da177e4 LT |
775 | |
776 | if (neigh) { | |
777 | kref_get(&mcast->ah->ref); | |
778 | neigh->ah = mcast->ah; | |
1da177e4 LT |
779 | list_add_tail(&neigh->list, &mcast->neigh_list); |
780 | } | |
781 | } | |
782 | ||
783 | ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); | |
784 | } | |
785 | ||
479a0796 | 786 | unlock: |
1da177e4 LT |
787 | spin_unlock(&priv->lock); |
788 | } | |
789 | ||
790 | void ipoib_mcast_dev_flush(struct net_device *dev) | |
791 | { | |
792 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
793 | LIST_HEAD(remove_list); | |
988bd503 | 794 | struct ipoib_mcast *mcast, *tmcast; |
1da177e4 LT |
795 | unsigned long flags; |
796 | ||
797 | ipoib_dbg_mcast(priv, "flushing multicast list\n"); | |
798 | ||
799 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 800 | |
988bd503 EC |
801 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
802 | list_del(&mcast->list); | |
803 | rb_erase(&mcast->rb_node, &priv->multicast_tree); | |
804 | list_add_tail(&mcast->list, &remove_list); | |
1da177e4 LT |
805 | } |
806 | ||
807 | if (priv->broadcast) { | |
3cd96564 | 808 | rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree); |
988bd503 EC |
809 | list_add_tail(&priv->broadcast->list, &remove_list); |
810 | priv->broadcast = NULL; | |
1da177e4 LT |
811 | } |
812 | ||
813 | spin_unlock_irqrestore(&priv->lock, flags); | |
814 | ||
815 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { | |
816 | ipoib_mcast_leave(dev, mcast); | |
817 | ipoib_mcast_free(mcast); | |
818 | } | |
819 | } | |
820 | ||
1da177e4 LT |
821 | void ipoib_mcast_restart_task(void *dev_ptr) |
822 | { | |
823 | struct net_device *dev = dev_ptr; | |
824 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
825 | struct dev_mc_list *mclist; | |
826 | struct ipoib_mcast *mcast, *tmcast; | |
827 | LIST_HEAD(remove_list); | |
828 | unsigned long flags; | |
829 | ||
830 | ipoib_dbg_mcast(priv, "restarting multicast task\n"); | |
831 | ||
8d2cae06 | 832 | ipoib_mcast_stop_thread(dev, 0); |
1da177e4 | 833 | |
932ff279 HX |
834 | local_irq_save(flags); |
835 | netif_tx_lock(dev); | |
78bfe0b5 | 836 | spin_lock(&priv->lock); |
1da177e4 LT |
837 | |
838 | /* | |
839 | * Unfortunately, the networking core only gives us a list of all of | |
840 | * the multicast hardware addresses. We need to figure out which ones | |
841 | * are new and which ones have been removed | |
842 | */ | |
843 | ||
844 | /* Clear out the found flag */ | |
845 | list_for_each_entry(mcast, &priv->multicast_list, list) | |
846 | clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); | |
847 | ||
848 | /* Mark all of the entries that are found or don't exist */ | |
849 | for (mclist = dev->mc_list; mclist; mclist = mclist->next) { | |
850 | union ib_gid mgid; | |
851 | ||
852 | memcpy(mgid.raw, mclist->dmi_addr + 4, sizeof mgid); | |
853 | ||
854 | /* Add in the P_Key */ | |
855 | mgid.raw[4] = (priv->pkey >> 8) & 0xff; | |
856 | mgid.raw[5] = priv->pkey & 0xff; | |
857 | ||
858 | mcast = __ipoib_mcast_find(dev, &mgid); | |
859 | if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
860 | struct ipoib_mcast *nmcast; | |
861 | ||
862 | /* Not found or send-only group, let's add a new entry */ | |
863 | ipoib_dbg_mcast(priv, "adding multicast entry for mgid " | |
864 | IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid)); | |
865 | ||
866 | nmcast = ipoib_mcast_alloc(dev, 0); | |
867 | if (!nmcast) { | |
868 | ipoib_warn(priv, "unable to allocate memory for multicast structure\n"); | |
869 | continue; | |
870 | } | |
871 | ||
872 | set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags); | |
873 | ||
874 | nmcast->mcmember.mgid = mgid; | |
875 | ||
876 | if (mcast) { | |
877 | /* Destroy the send only entry */ | |
179e0917 | 878 | list_move_tail(&mcast->list, &remove_list); |
1da177e4 LT |
879 | |
880 | rb_replace_node(&mcast->rb_node, | |
881 | &nmcast->rb_node, | |
882 | &priv->multicast_tree); | |
883 | } else | |
884 | __ipoib_mcast_add(dev, nmcast); | |
885 | ||
886 | list_add_tail(&nmcast->list, &priv->multicast_list); | |
887 | } | |
888 | ||
889 | if (mcast) | |
890 | set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); | |
891 | } | |
892 | ||
893 | /* Remove all of the entries don't exist anymore */ | |
894 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { | |
895 | if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) && | |
896 | !test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
897 | ipoib_dbg_mcast(priv, "deleting multicast group " IPOIB_GID_FMT "\n", | |
898 | IPOIB_GID_ARG(mcast->mcmember.mgid)); | |
899 | ||
900 | rb_erase(&mcast->rb_node, &priv->multicast_tree); | |
901 | ||
902 | /* Move to the remove list */ | |
179e0917 | 903 | list_move_tail(&mcast->list, &remove_list); |
1da177e4 LT |
904 | } |
905 | } | |
78bfe0b5 MT |
906 | |
907 | spin_unlock(&priv->lock); | |
932ff279 HX |
908 | netif_tx_unlock(dev); |
909 | local_irq_restore(flags); | |
1da177e4 LT |
910 | |
911 | /* We have to cancel outside of the spinlock */ | |
912 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { | |
f2de3b06 | 913 | wait_for_mcast_join(priv, mcast); |
1da177e4 LT |
914 | ipoib_mcast_leave(mcast->dev, mcast); |
915 | ipoib_mcast_free(mcast); | |
916 | } | |
917 | ||
918 | if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) | |
919 | ipoib_mcast_start_thread(dev); | |
920 | } | |
921 | ||
8ae5a8a2 RD |
922 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
923 | ||
1da177e4 LT |
924 | struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev) |
925 | { | |
926 | struct ipoib_mcast_iter *iter; | |
927 | ||
928 | iter = kmalloc(sizeof *iter, GFP_KERNEL); | |
929 | if (!iter) | |
930 | return NULL; | |
931 | ||
932 | iter->dev = dev; | |
1732b0ef | 933 | memset(iter->mgid.raw, 0, 16); |
1da177e4 LT |
934 | |
935 | if (ipoib_mcast_iter_next(iter)) { | |
1732b0ef | 936 | kfree(iter); |
1da177e4 LT |
937 | return NULL; |
938 | } | |
939 | ||
940 | return iter; | |
941 | } | |
942 | ||
1da177e4 LT |
943 | int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter) |
944 | { | |
945 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); | |
946 | struct rb_node *n; | |
947 | struct ipoib_mcast *mcast; | |
948 | int ret = 1; | |
949 | ||
950 | spin_lock_irq(&priv->lock); | |
951 | ||
952 | n = rb_first(&priv->multicast_tree); | |
953 | ||
954 | while (n) { | |
955 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); | |
956 | ||
957 | if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw, | |
958 | sizeof (union ib_gid)) < 0) { | |
959 | iter->mgid = mcast->mcmember.mgid; | |
960 | iter->created = mcast->created; | |
961 | iter->queuelen = skb_queue_len(&mcast->pkt_queue); | |
962 | iter->complete = !!mcast->ah; | |
963 | iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY)); | |
964 | ||
965 | ret = 0; | |
966 | ||
967 | break; | |
968 | } | |
969 | ||
970 | n = rb_next(n); | |
971 | } | |
972 | ||
973 | spin_unlock_irq(&priv->lock); | |
974 | ||
975 | return ret; | |
976 | } | |
977 | ||
978 | void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, | |
979 | union ib_gid *mgid, | |
980 | unsigned long *created, | |
981 | unsigned int *queuelen, | |
982 | unsigned int *complete, | |
983 | unsigned int *send_only) | |
984 | { | |
985 | *mgid = iter->mgid; | |
986 | *created = iter->created; | |
987 | *queuelen = iter->queuelen; | |
988 | *complete = iter->complete; | |
989 | *send_only = iter->send_only; | |
990 | } | |
8ae5a8a2 RD |
991 | |
992 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |