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. | |
1da177e4 LT |
33 | */ |
34 | ||
35 | #include <linux/skbuff.h> | |
36 | #include <linux/rtnetlink.h> | |
fec14d2f | 37 | #include <linux/moduleparam.h> |
1da177e4 LT |
38 | #include <linux/ip.h> |
39 | #include <linux/in.h> | |
40 | #include <linux/igmp.h> | |
41 | #include <linux/inetdevice.h> | |
42 | #include <linux/delay.h> | |
43 | #include <linux/completion.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 | 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 | 59 | |
1da177e4 LT |
60 | struct ipoib_mcast_iter { |
61 | struct net_device *dev; | |
62 | union ib_gid mgid; | |
63 | unsigned long created; | |
64 | unsigned int queuelen; | |
65 | unsigned int complete; | |
66 | unsigned int send_only; | |
67 | }; | |
68 | ||
69 | static void ipoib_mcast_free(struct ipoib_mcast *mcast) | |
70 | { | |
71 | struct net_device *dev = mcast->dev; | |
b36f170b | 72 | int tx_dropped = 0; |
1da177e4 | 73 | |
5b095d98 | 74 | ipoib_dbg_mcast(netdev_priv(dev), "deleting multicast group %pI6\n", |
fcace2fe | 75 | mcast->mcmember.mgid.raw); |
1da177e4 | 76 | |
b63b70d8 SP |
77 | /* remove all neigh connected to this mcast */ |
78 | ipoib_del_neighs_by_gid(dev, mcast->mcmember.mgid.raw); | |
1da177e4 | 79 | |
1da177e4 LT |
80 | if (mcast->ah) |
81 | ipoib_put_ah(mcast->ah); | |
82 | ||
b36f170b MT |
83 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
84 | ++tx_dropped; | |
8c608a32 | 85 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
b36f170b MT |
86 | } |
87 | ||
943c246e | 88 | netif_tx_lock_bh(dev); |
de903512 | 89 | dev->stats.tx_dropped += tx_dropped; |
943c246e | 90 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
91 | |
92 | kfree(mcast); | |
93 | } | |
94 | ||
95 | static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev, | |
96 | int can_sleep) | |
97 | { | |
98 | struct ipoib_mcast *mcast; | |
99 | ||
de6eb66b | 100 | mcast = kzalloc(sizeof *mcast, can_sleep ? GFP_KERNEL : GFP_ATOMIC); |
1da177e4 LT |
101 | if (!mcast) |
102 | return NULL; | |
103 | ||
1da177e4 LT |
104 | mcast->dev = dev; |
105 | mcast->created = jiffies; | |
ce5b65cc | 106 | mcast->backoff = 1; |
1da177e4 LT |
107 | |
108 | INIT_LIST_HEAD(&mcast->list); | |
109 | INIT_LIST_HEAD(&mcast->neigh_list); | |
110 | skb_queue_head_init(&mcast->pkt_queue); | |
111 | ||
1da177e4 LT |
112 | return mcast; |
113 | } | |
114 | ||
37c22a77 | 115 | static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid) |
1da177e4 LT |
116 | { |
117 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
118 | struct rb_node *n = priv->multicast_tree.rb_node; | |
119 | ||
120 | while (n) { | |
121 | struct ipoib_mcast *mcast; | |
122 | int ret; | |
123 | ||
124 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); | |
125 | ||
37c22a77 | 126 | ret = memcmp(mgid, mcast->mcmember.mgid.raw, |
1da177e4 LT |
127 | sizeof (union ib_gid)); |
128 | if (ret < 0) | |
129 | n = n->rb_left; | |
130 | else if (ret > 0) | |
131 | n = n->rb_right; | |
132 | else | |
133 | return mcast; | |
134 | } | |
135 | ||
136 | return NULL; | |
137 | } | |
138 | ||
139 | static int __ipoib_mcast_add(struct net_device *dev, struct ipoib_mcast *mcast) | |
140 | { | |
141 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
142 | struct rb_node **n = &priv->multicast_tree.rb_node, *pn = NULL; | |
143 | ||
144 | while (*n) { | |
145 | struct ipoib_mcast *tmcast; | |
146 | int ret; | |
147 | ||
148 | pn = *n; | |
149 | tmcast = rb_entry(pn, struct ipoib_mcast, rb_node); | |
150 | ||
151 | ret = memcmp(mcast->mcmember.mgid.raw, tmcast->mcmember.mgid.raw, | |
152 | sizeof (union ib_gid)); | |
153 | if (ret < 0) | |
154 | n = &pn->rb_left; | |
155 | else if (ret > 0) | |
156 | n = &pn->rb_right; | |
157 | else | |
158 | return -EEXIST; | |
159 | } | |
160 | ||
161 | rb_link_node(&mcast->rb_node, pn, n); | |
162 | rb_insert_color(&mcast->rb_node, &priv->multicast_tree); | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast, | |
168 | struct ib_sa_mcmember_rec *mcmember) | |
169 | { | |
170 | struct net_device *dev = mcast->dev; | |
171 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
7343b231 | 172 | struct ipoib_ah *ah; |
1da177e4 | 173 | int ret; |
d0de1362 | 174 | int set_qkey = 0; |
1da177e4 LT |
175 | |
176 | mcast->mcmember = *mcmember; | |
177 | ||
bea1e22d PM |
178 | /* Set the multicast MTU and cached Q_Key before we attach if it's |
179 | * the broadcast group. | |
180 | */ | |
1da177e4 LT |
181 | if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4, |
182 | sizeof (union ib_gid))) { | |
e1d50dce JM |
183 | spin_lock_irq(&priv->lock); |
184 | if (!priv->broadcast) { | |
185 | spin_unlock_irq(&priv->lock); | |
186 | return -EAGAIN; | |
187 | } | |
bea1e22d | 188 | priv->mcast_mtu = IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu)); |
1da177e4 | 189 | priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey); |
e1d50dce | 190 | spin_unlock_irq(&priv->lock); |
1da177e4 | 191 | priv->tx_wr.wr.ud.remote_qkey = priv->qkey; |
d0de1362 | 192 | set_qkey = 1; |
bea1e22d PM |
193 | |
194 | if (!ipoib_cm_admin_enabled(dev)) { | |
195 | rtnl_lock(); | |
196 | dev_set_mtu(dev, min(priv->mcast_mtu, priv->admin_mtu)); | |
197 | rtnl_unlock(); | |
198 | } | |
1da177e4 LT |
199 | } |
200 | ||
201 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
202 | if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { | |
5b095d98 | 203 | ipoib_warn(priv, "multicast group %pI6 already attached\n", |
fcace2fe | 204 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
205 | |
206 | return 0; | |
207 | } | |
208 | ||
209 | ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid), | |
d0de1362 | 210 | &mcast->mcmember.mgid, set_qkey); |
1da177e4 | 211 | if (ret < 0) { |
5b095d98 | 212 | ipoib_warn(priv, "couldn't attach QP to multicast group %pI6\n", |
fcace2fe | 213 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
214 | |
215 | clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags); | |
216 | return ret; | |
217 | } | |
218 | } | |
219 | ||
220 | { | |
221 | struct ib_ah_attr av = { | |
222 | .dlid = be16_to_cpu(mcast->mcmember.mlid), | |
223 | .port_num = priv->port, | |
224 | .sl = mcast->mcmember.sl, | |
225 | .ah_flags = IB_AH_GRH, | |
bf6a9e31 | 226 | .static_rate = mcast->mcmember.rate, |
1da177e4 LT |
227 | .grh = { |
228 | .flow_label = be32_to_cpu(mcast->mcmember.flow_label), | |
229 | .hop_limit = mcast->mcmember.hop_limit, | |
230 | .sgid_index = 0, | |
231 | .traffic_class = mcast->mcmember.traffic_class | |
232 | } | |
233 | }; | |
1da177e4 LT |
234 | av.grh.dgid = mcast->mcmember.mgid; |
235 | ||
7343b231 | 236 | ah = ipoib_create_ah(dev, priv->pd, &av); |
3874397c MM |
237 | if (IS_ERR(ah)) { |
238 | ipoib_warn(priv, "ib_address_create failed %ld\n", | |
239 | -PTR_ERR(ah)); | |
240 | /* use original error */ | |
241 | return PTR_ERR(ah); | |
1da177e4 | 242 | } else { |
624d01f8 OG |
243 | spin_lock_irq(&priv->lock); |
244 | mcast->ah = ah; | |
245 | spin_unlock_irq(&priv->lock); | |
246 | ||
5b095d98 | 247 | ipoib_dbg_mcast(priv, "MGID %pI6 AV %p, LID 0x%04x, SL %d\n", |
fcace2fe | 248 | mcast->mcmember.mgid.raw, |
1da177e4 LT |
249 | mcast->ah->ah, |
250 | be16_to_cpu(mcast->mcmember.mlid), | |
251 | mcast->mcmember.sl); | |
252 | } | |
253 | } | |
254 | ||
255 | /* actually send any queued packets */ | |
943c246e | 256 | netif_tx_lock_bh(dev); |
1da177e4 LT |
257 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
258 | struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue); | |
69cce1d1 | 259 | |
943c246e | 260 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
261 | |
262 | skb->dev = dev; | |
1da177e4 LT |
263 | if (dev_queue_xmit(skb)) |
264 | ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n"); | |
936d7de3 | 265 | |
943c246e | 266 | netif_tx_lock_bh(dev); |
1da177e4 | 267 | } |
943c246e | 268 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
269 | |
270 | return 0; | |
271 | } | |
272 | ||
faec2f7b | 273 | static int |
1da177e4 | 274 | ipoib_mcast_sendonly_join_complete(int status, |
faec2f7b | 275 | struct ib_sa_multicast *multicast) |
1da177e4 | 276 | { |
faec2f7b | 277 | struct ipoib_mcast *mcast = multicast->context; |
1da177e4 LT |
278 | struct net_device *dev = mcast->dev; |
279 | ||
faec2f7b SH |
280 | /* We trap for port events ourselves. */ |
281 | if (status == -ENETRESET) | |
282 | return 0; | |
283 | ||
1da177e4 | 284 | if (!status) |
faec2f7b SH |
285 | status = ipoib_mcast_join_finish(mcast, &multicast->rec); |
286 | ||
287 | if (status) { | |
1da177e4 | 288 | if (mcast->logcount++ < 20) |
5b095d98 | 289 | ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for %pI6, status %d\n", |
fcace2fe | 290 | mcast->mcmember.mgid.raw, status); |
1da177e4 LT |
291 | |
292 | /* Flush out any queued packets */ | |
943c246e | 293 | netif_tx_lock_bh(dev); |
b36f170b | 294 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
de903512 | 295 | ++dev->stats.tx_dropped; |
8c608a32 | 296 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
b36f170b | 297 | } |
943c246e | 298 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
299 | |
300 | /* Clear the busy flag so we try again */ | |
faec2f7b SH |
301 | status = test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, |
302 | &mcast->flags); | |
1da177e4 | 303 | } |
faec2f7b | 304 | return status; |
1da177e4 LT |
305 | } |
306 | ||
307 | static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast) | |
308 | { | |
309 | struct net_device *dev = mcast->dev; | |
310 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
311 | struct ib_sa_mcmember_rec rec = { | |
312 | #if 0 /* Some SMs don't support send-only yet */ | |
313 | .join_state = 4 | |
314 | #else | |
315 | .join_state = 1 | |
316 | #endif | |
317 | }; | |
318 | int ret = 0; | |
319 | ||
320 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { | |
321 | ipoib_dbg_mcast(priv, "device shutting down, no multicast joins\n"); | |
322 | return -ENODEV; | |
323 | } | |
324 | ||
325 | if (test_and_set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) { | |
326 | ipoib_dbg_mcast(priv, "multicast entry busy, skipping\n"); | |
327 | return -EBUSY; | |
328 | } | |
329 | ||
330 | rec.mgid = mcast->mcmember.mgid; | |
331 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 332 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 | 333 | |
faec2f7b SH |
334 | mcast->mc = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, |
335 | priv->port, &rec, | |
336 | IB_SA_MCMEMBER_REC_MGID | | |
337 | IB_SA_MCMEMBER_REC_PORT_GID | | |
338 | IB_SA_MCMEMBER_REC_PKEY | | |
339 | IB_SA_MCMEMBER_REC_JOIN_STATE, | |
340 | GFP_ATOMIC, | |
341 | ipoib_mcast_sendonly_join_complete, | |
342 | mcast); | |
343 | if (IS_ERR(mcast->mc)) { | |
344 | ret = PTR_ERR(mcast->mc); | |
345 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
346 | ipoib_warn(priv, "ib_sa_join_multicast failed (ret = %d)\n", | |
1da177e4 LT |
347 | ret); |
348 | } else { | |
5b095d98 | 349 | ipoib_dbg_mcast(priv, "no multicast record for %pI6, starting join\n", |
fcace2fe | 350 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
351 | } |
352 | ||
353 | return ret; | |
354 | } | |
355 | ||
e8224e4b YE |
356 | void ipoib_mcast_carrier_on_task(struct work_struct *work) |
357 | { | |
358 | struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, | |
359 | carrier_on_task); | |
5ee95120 | 360 | struct ib_port_attr attr; |
e8224e4b YE |
361 | |
362 | /* | |
363 | * Take rtnl_lock to avoid racing with ipoib_stop() and | |
364 | * turning the carrier back on while a device is being | |
365 | * removed. | |
366 | */ | |
5ee95120 MS |
367 | if (ib_query_port(priv->ca, priv->port, &attr) || |
368 | attr.state != IB_PORT_ACTIVE) { | |
369 | ipoib_dbg(priv, "Keeping carrier off until IB port is active\n"); | |
370 | return; | |
371 | } | |
372 | ||
e8224e4b YE |
373 | rtnl_lock(); |
374 | netif_carrier_on(priv->dev); | |
375 | rtnl_unlock(); | |
376 | } | |
377 | ||
faec2f7b SH |
378 | static int ipoib_mcast_join_complete(int status, |
379 | struct ib_sa_multicast *multicast) | |
1da177e4 | 380 | { |
faec2f7b | 381 | struct ipoib_mcast *mcast = multicast->context; |
1da177e4 LT |
382 | struct net_device *dev = mcast->dev; |
383 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
384 | ||
5b095d98 | 385 | ipoib_dbg_mcast(priv, "join completion for %pI6 (status %d)\n", |
fcace2fe | 386 | mcast->mcmember.mgid.raw, status); |
1da177e4 | 387 | |
faec2f7b | 388 | /* We trap for port events ourselves. */ |
a9c8ba58 ES |
389 | if (status == -ENETRESET) { |
390 | status = 0; | |
391 | goto out; | |
392 | } | |
faec2f7b SH |
393 | |
394 | if (!status) | |
395 | status = ipoib_mcast_join_finish(mcast, &multicast->rec); | |
396 | ||
397 | if (!status) { | |
ce5b65cc | 398 | mcast->backoff = 1; |
95ed644f | 399 | mutex_lock(&mcast_mutex); |
1da177e4 | 400 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
c4028958 DH |
401 | queue_delayed_work(ipoib_workqueue, |
402 | &priv->mcast_task, 0); | |
95ed644f | 403 | mutex_unlock(&mcast_mutex); |
55c9adde | 404 | |
e8224e4b YE |
405 | /* |
406 | * Defer carrier on work to ipoib_workqueue to avoid a | |
407 | * deadlock on rtnl_lock here. | |
408 | */ | |
409 | if (mcast == priv->broadcast) | |
410 | queue_work(ipoib_workqueue, &priv->carrier_on_task); | |
55c9adde | 411 | |
a9c8ba58 ES |
412 | status = 0; |
413 | goto out; | |
1da177e4 LT |
414 | } |
415 | ||
faec2f7b | 416 | if (mcast->logcount++ < 20) { |
3c209620 | 417 | if (status == -ETIMEDOUT || status == -EAGAIN) { |
5b095d98 | 418 | ipoib_dbg_mcast(priv, "multicast join failed for %pI6, status %d\n", |
fcace2fe | 419 | mcast->mcmember.mgid.raw, status); |
1da177e4 | 420 | } else { |
5b095d98 | 421 | ipoib_warn(priv, "multicast join failed for %pI6, status %d\n", |
fcace2fe | 422 | mcast->mcmember.mgid.raw, status); |
1da177e4 LT |
423 | } |
424 | } | |
425 | ||
426 | mcast->backoff *= 2; | |
427 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) | |
428 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; | |
429 | ||
faec2f7b SH |
430 | /* Clear the busy flag so we try again */ |
431 | status = test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
9acf6a85 | 432 | |
faec2f7b | 433 | mutex_lock(&mcast_mutex); |
9acf6a85 | 434 | spin_lock_irq(&priv->lock); |
faec2f7b SH |
435 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
436 | queue_delayed_work(ipoib_workqueue, &priv->mcast_task, | |
437 | mcast->backoff * HZ); | |
9acf6a85 | 438 | spin_unlock_irq(&priv->lock); |
95ed644f | 439 | mutex_unlock(&mcast_mutex); |
a9c8ba58 ES |
440 | out: |
441 | complete(&mcast->done); | |
faec2f7b | 442 | return status; |
1da177e4 LT |
443 | } |
444 | ||
445 | static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast, | |
446 | int create) | |
447 | { | |
448 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
449 | struct ib_sa_mcmember_rec rec = { | |
450 | .join_state = 1 | |
451 | }; | |
452 | ib_sa_comp_mask comp_mask; | |
453 | int ret = 0; | |
454 | ||
5b095d98 | 455 | ipoib_dbg_mcast(priv, "joining MGID %pI6\n", mcast->mcmember.mgid.raw); |
1da177e4 LT |
456 | |
457 | rec.mgid = mcast->mcmember.mgid; | |
458 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 459 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 LT |
460 | |
461 | comp_mask = | |
462 | IB_SA_MCMEMBER_REC_MGID | | |
463 | IB_SA_MCMEMBER_REC_PORT_GID | | |
464 | IB_SA_MCMEMBER_REC_PKEY | | |
465 | IB_SA_MCMEMBER_REC_JOIN_STATE; | |
466 | ||
467 | if (create) { | |
468 | comp_mask |= | |
d0df6d6d RD |
469 | IB_SA_MCMEMBER_REC_QKEY | |
470 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
471 | IB_SA_MCMEMBER_REC_MTU | | |
472 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS | | |
473 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | | |
474 | IB_SA_MCMEMBER_REC_RATE | | |
475 | IB_SA_MCMEMBER_REC_SL | | |
476 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
477 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
1da177e4 LT |
478 | |
479 | rec.qkey = priv->broadcast->mcmember.qkey; | |
d0df6d6d RD |
480 | rec.mtu_selector = IB_SA_EQ; |
481 | rec.mtu = priv->broadcast->mcmember.mtu; | |
482 | rec.traffic_class = priv->broadcast->mcmember.traffic_class; | |
483 | rec.rate_selector = IB_SA_EQ; | |
484 | rec.rate = priv->broadcast->mcmember.rate; | |
1da177e4 LT |
485 | rec.sl = priv->broadcast->mcmember.sl; |
486 | rec.flow_label = priv->broadcast->mcmember.flow_label; | |
d0df6d6d | 487 | rec.hop_limit = priv->broadcast->mcmember.hop_limit; |
1da177e4 LT |
488 | } |
489 | ||
faec2f7b | 490 | set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
a9c8ba58 ES |
491 | init_completion(&mcast->done); |
492 | set_bit(IPOIB_MCAST_JOIN_STARTED, &mcast->flags); | |
493 | ||
faec2f7b SH |
494 | mcast->mc = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, priv->port, |
495 | &rec, comp_mask, GFP_KERNEL, | |
496 | ipoib_mcast_join_complete, mcast); | |
497 | if (IS_ERR(mcast->mc)) { | |
498 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
a9c8ba58 | 499 | complete(&mcast->done); |
faec2f7b SH |
500 | ret = PTR_ERR(mcast->mc); |
501 | ipoib_warn(priv, "ib_sa_join_multicast failed, status %d\n", ret); | |
1da177e4 LT |
502 | |
503 | mcast->backoff *= 2; | |
504 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) | |
505 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; | |
506 | ||
95ed644f | 507 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
508 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
509 | queue_delayed_work(ipoib_workqueue, | |
510 | &priv->mcast_task, | |
ce5b65cc | 511 | mcast->backoff * HZ); |
95ed644f | 512 | mutex_unlock(&mcast_mutex); |
faec2f7b | 513 | } |
1da177e4 LT |
514 | } |
515 | ||
c4028958 | 516 | void ipoib_mcast_join_task(struct work_struct *work) |
1da177e4 | 517 | { |
c4028958 DH |
518 | struct ipoib_dev_priv *priv = |
519 | container_of(work, struct ipoib_dev_priv, mcast_task.work); | |
520 | struct net_device *dev = priv->dev; | |
94232d9c | 521 | struct ib_port_attr port_attr; |
1da177e4 LT |
522 | |
523 | if (!test_bit(IPOIB_MCAST_RUN, &priv->flags)) | |
524 | return; | |
525 | ||
94232d9c ES |
526 | if (ib_query_port(priv->ca, priv->port, &port_attr) || |
527 | port_attr.state != IB_PORT_ACTIVE) { | |
528 | ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n", | |
529 | port_attr.state); | |
530 | return; | |
531 | } | |
532 | ||
1da177e4 | 533 | if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid)) |
24bd1e4e | 534 | ipoib_warn(priv, "ib_query_gid() failed\n"); |
1da177e4 LT |
535 | else |
536 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); | |
537 | ||
538 | { | |
539 | struct ib_port_attr attr; | |
540 | ||
658bcef6 RD |
541 | if (!ib_query_port(priv->ca, priv->port, &attr)) |
542 | priv->local_lid = attr.lid; | |
543 | else | |
faec2f7b | 544 | ipoib_warn(priv, "ib_query_port failed\n"); |
1da177e4 LT |
545 | } |
546 | ||
547 | if (!priv->broadcast) { | |
20b83382 RD |
548 | struct ipoib_mcast *broadcast; |
549 | ||
50df48f5 YE |
550 | if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) |
551 | return; | |
552 | ||
20b83382 RD |
553 | broadcast = ipoib_mcast_alloc(dev, 1); |
554 | if (!broadcast) { | |
1da177e4 | 555 | ipoib_warn(priv, "failed to allocate broadcast group\n"); |
95ed644f | 556 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
557 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
558 | queue_delayed_work(ipoib_workqueue, | |
559 | &priv->mcast_task, HZ); | |
95ed644f | 560 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
561 | return; |
562 | } | |
563 | ||
20b83382 RD |
564 | spin_lock_irq(&priv->lock); |
565 | memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4, | |
1da177e4 | 566 | sizeof (union ib_gid)); |
20b83382 | 567 | priv->broadcast = broadcast; |
1da177e4 | 568 | |
1da177e4 LT |
569 | __ipoib_mcast_add(dev, priv->broadcast); |
570 | spin_unlock_irq(&priv->lock); | |
571 | } | |
572 | ||
573 | if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { | |
faec2f7b SH |
574 | if (!test_bit(IPOIB_MCAST_FLAG_BUSY, &priv->broadcast->flags)) |
575 | ipoib_mcast_join(dev, priv->broadcast, 0); | |
1da177e4 LT |
576 | return; |
577 | } | |
578 | ||
579 | while (1) { | |
580 | struct ipoib_mcast *mcast = NULL; | |
581 | ||
582 | spin_lock_irq(&priv->lock); | |
583 | list_for_each_entry(mcast, &priv->multicast_list, list) { | |
584 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) | |
585 | && !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags) | |
586 | && !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { | |
587 | /* Found the next unjoined group */ | |
588 | break; | |
589 | } | |
590 | } | |
591 | spin_unlock_irq(&priv->lock); | |
592 | ||
593 | if (&mcast->list == &priv->multicast_list) { | |
594 | /* All done */ | |
595 | break; | |
596 | } | |
597 | ||
598 | ipoib_mcast_join(dev, mcast, 1); | |
599 | return; | |
600 | } | |
601 | ||
1da177e4 LT |
602 | ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n"); |
603 | ||
604 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); | |
1da177e4 LT |
605 | } |
606 | ||
607 | int ipoib_mcast_start_thread(struct net_device *dev) | |
608 | { | |
609 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
610 | ||
611 | ipoib_dbg_mcast(priv, "starting multicast thread\n"); | |
612 | ||
95ed644f | 613 | mutex_lock(&mcast_mutex); |
1da177e4 | 614 | if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags)) |
c4028958 | 615 | queue_delayed_work(ipoib_workqueue, &priv->mcast_task, 0); |
95ed644f | 616 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
617 | |
618 | return 0; | |
619 | } | |
620 | ||
8d2cae06 | 621 | int ipoib_mcast_stop_thread(struct net_device *dev, int flush) |
1da177e4 LT |
622 | { |
623 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
1da177e4 LT |
624 | |
625 | ipoib_dbg_mcast(priv, "stopping multicast thread\n"); | |
626 | ||
95ed644f | 627 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
628 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); |
629 | cancel_delayed_work(&priv->mcast_task); | |
95ed644f | 630 | mutex_unlock(&mcast_mutex); |
1da177e4 | 631 | |
8d2cae06 RD |
632 | if (flush) |
633 | flush_workqueue(ipoib_workqueue); | |
1da177e4 | 634 | |
1da177e4 LT |
635 | return 0; |
636 | } | |
637 | ||
638 | static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) | |
639 | { | |
640 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
1da177e4 LT |
641 | int ret = 0; |
642 | ||
e07832b6 SH |
643 | if (test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
644 | ib_sa_free_multicast(mcast->mc); | |
645 | ||
faec2f7b | 646 | if (test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { |
5b095d98 | 647 | ipoib_dbg_mcast(priv, "leaving MGID %pI6\n", |
fcace2fe | 648 | mcast->mcmember.mgid.raw); |
1da177e4 | 649 | |
faec2f7b | 650 | /* Remove ourselves from the multicast group */ |
9eae554c RD |
651 | ret = ib_detach_mcast(priv->qp, &mcast->mcmember.mgid, |
652 | be16_to_cpu(mcast->mcmember.mlid)); | |
faec2f7b | 653 | if (ret) |
9eae554c | 654 | ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret); |
faec2f7b | 655 | } |
1da177e4 | 656 | |
1da177e4 LT |
657 | return 0; |
658 | } | |
659 | ||
b63b70d8 | 660 | void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb) |
1da177e4 LT |
661 | { |
662 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
663 | struct ipoib_mcast *mcast; | |
943c246e | 664 | unsigned long flags; |
b63b70d8 | 665 | void *mgid = daddr + 4; |
700db99d | 666 | |
943c246e | 667 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 668 | |
b3e2749b | 669 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags) || |
20b83382 RD |
670 | !priv->broadcast || |
671 | !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { | |
de903512 | 672 | ++dev->stats.tx_dropped; |
479a0796 MT |
673 | dev_kfree_skb_any(skb); |
674 | goto unlock; | |
675 | } | |
676 | ||
1da177e4 LT |
677 | mcast = __ipoib_mcast_find(dev, mgid); |
678 | if (!mcast) { | |
679 | /* Let's create a new send only group now */ | |
5b095d98 | 680 | ipoib_dbg_mcast(priv, "setting up send only multicast group for %pI6\n", |
fcace2fe | 681 | mgid); |
1da177e4 LT |
682 | |
683 | mcast = ipoib_mcast_alloc(dev, 0); | |
684 | if (!mcast) { | |
685 | ipoib_warn(priv, "unable to allocate memory for " | |
686 | "multicast structure\n"); | |
de903512 | 687 | ++dev->stats.tx_dropped; |
1da177e4 LT |
688 | dev_kfree_skb_any(skb); |
689 | goto out; | |
690 | } | |
691 | ||
692 | set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags); | |
37c22a77 | 693 | memcpy(mcast->mcmember.mgid.raw, mgid, sizeof (union ib_gid)); |
1da177e4 LT |
694 | __ipoib_mcast_add(dev, mcast); |
695 | list_add_tail(&mcast->list, &priv->multicast_list); | |
696 | } | |
697 | ||
698 | if (!mcast->ah) { | |
699 | if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE) | |
700 | skb_queue_tail(&mcast->pkt_queue, skb); | |
b36f170b | 701 | else { |
de903512 | 702 | ++dev->stats.tx_dropped; |
1da177e4 | 703 | dev_kfree_skb_any(skb); |
b36f170b | 704 | } |
1da177e4 | 705 | |
faec2f7b | 706 | if (test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
1da177e4 LT |
707 | ipoib_dbg_mcast(priv, "no address vector, " |
708 | "but multicast join already started\n"); | |
709 | else if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) | |
710 | ipoib_mcast_sendonly_join(mcast); | |
711 | ||
712 | /* | |
713 | * If lookup completes between here and out:, don't | |
714 | * want to send packet twice. | |
715 | */ | |
716 | mcast = NULL; | |
717 | } | |
718 | ||
719 | out: | |
720 | if (mcast && mcast->ah) { | |
b63b70d8 SP |
721 | struct ipoib_neigh *neigh; |
722 | ||
723 | spin_unlock_irqrestore(&priv->lock, flags); | |
724 | neigh = ipoib_neigh_get(dev, daddr); | |
725 | spin_lock_irqsave(&priv->lock, flags); | |
726 | if (!neigh) { | |
b63b70d8 | 727 | neigh = ipoib_neigh_alloc(daddr, dev); |
b63b70d8 SP |
728 | if (neigh) { |
729 | kref_get(&mcast->ah->ref); | |
730 | neigh->ah = mcast->ah; | |
731 | list_add_tail(&neigh->list, &mcast->neigh_list); | |
1da177e4 LT |
732 | } |
733 | } | |
721d67cd | 734 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 735 | ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); |
b63b70d8 SP |
736 | if (neigh) |
737 | ipoib_neigh_put(neigh); | |
721d67cd | 738 | return; |
1da177e4 LT |
739 | } |
740 | ||
479a0796 | 741 | unlock: |
943c246e | 742 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
743 | } |
744 | ||
745 | void ipoib_mcast_dev_flush(struct net_device *dev) | |
746 | { | |
747 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
748 | LIST_HEAD(remove_list); | |
988bd503 | 749 | struct ipoib_mcast *mcast, *tmcast; |
1da177e4 LT |
750 | unsigned long flags; |
751 | ||
752 | ipoib_dbg_mcast(priv, "flushing multicast list\n"); | |
753 | ||
754 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 755 | |
988bd503 EC |
756 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
757 | list_del(&mcast->list); | |
758 | rb_erase(&mcast->rb_node, &priv->multicast_tree); | |
759 | list_add_tail(&mcast->list, &remove_list); | |
1da177e4 LT |
760 | } |
761 | ||
762 | if (priv->broadcast) { | |
3cd96564 | 763 | rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree); |
988bd503 EC |
764 | list_add_tail(&priv->broadcast->list, &remove_list); |
765 | priv->broadcast = NULL; | |
1da177e4 LT |
766 | } |
767 | ||
768 | spin_unlock_irqrestore(&priv->lock, flags); | |
769 | ||
a9c8ba58 ES |
770 | /* seperate between the wait to the leave*/ |
771 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) | |
772 | if (test_bit(IPOIB_MCAST_JOIN_STARTED, &mcast->flags)) | |
773 | wait_for_completion(&mcast->done); | |
774 | ||
1da177e4 LT |
775 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
776 | ipoib_mcast_leave(dev, mcast); | |
777 | ipoib_mcast_free(mcast); | |
778 | } | |
779 | } | |
780 | ||
3e4aa12f | 781 | static int ipoib_mcast_addr_is_valid(const u8 *addr, const u8 *broadcast) |
5e47596b | 782 | { |
5e47596b JG |
783 | /* reserved QPN, prefix, scope */ |
784 | if (memcmp(addr, broadcast, 6)) | |
785 | return 0; | |
786 | /* signature lower, pkey */ | |
787 | if (memcmp(addr + 7, broadcast + 7, 3)) | |
788 | return 0; | |
789 | return 1; | |
790 | } | |
791 | ||
c4028958 | 792 | void ipoib_mcast_restart_task(struct work_struct *work) |
1da177e4 | 793 | { |
c4028958 DH |
794 | struct ipoib_dev_priv *priv = |
795 | container_of(work, struct ipoib_dev_priv, restart_task); | |
796 | struct net_device *dev = priv->dev; | |
22bedad3 | 797 | struct netdev_hw_addr *ha; |
1da177e4 LT |
798 | struct ipoib_mcast *mcast, *tmcast; |
799 | LIST_HEAD(remove_list); | |
800 | unsigned long flags; | |
335a64a5 | 801 | struct ib_sa_mcmember_rec rec; |
1da177e4 LT |
802 | |
803 | ipoib_dbg_mcast(priv, "restarting multicast task\n"); | |
804 | ||
8d2cae06 | 805 | ipoib_mcast_stop_thread(dev, 0); |
1da177e4 | 806 | |
932ff279 | 807 | local_irq_save(flags); |
e308a5d8 | 808 | netif_addr_lock(dev); |
78bfe0b5 | 809 | spin_lock(&priv->lock); |
1da177e4 LT |
810 | |
811 | /* | |
812 | * Unfortunately, the networking core only gives us a list of all of | |
813 | * the multicast hardware addresses. We need to figure out which ones | |
814 | * are new and which ones have been removed | |
815 | */ | |
816 | ||
817 | /* Clear out the found flag */ | |
818 | list_for_each_entry(mcast, &priv->multicast_list, list) | |
819 | clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); | |
820 | ||
821 | /* Mark all of the entries that are found or don't exist */ | |
22bedad3 | 822 | netdev_for_each_mc_addr(ha, dev) { |
1da177e4 LT |
823 | union ib_gid mgid; |
824 | ||
22bedad3 | 825 | if (!ipoib_mcast_addr_is_valid(ha->addr, dev->broadcast)) |
5e47596b JG |
826 | continue; |
827 | ||
22bedad3 | 828 | memcpy(mgid.raw, ha->addr + 4, sizeof mgid); |
1da177e4 | 829 | |
1da177e4 LT |
830 | mcast = __ipoib_mcast_find(dev, &mgid); |
831 | if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
832 | struct ipoib_mcast *nmcast; | |
833 | ||
335a64a5 OG |
834 | /* ignore group which is directly joined by userspace */ |
835 | if (test_bit(IPOIB_FLAG_UMCAST, &priv->flags) && | |
836 | !ib_sa_get_mcmember_rec(priv->ca, priv->port, &mgid, &rec)) { | |
5b095d98 | 837 | ipoib_dbg_mcast(priv, "ignoring multicast entry for mgid %pI6\n", |
fcace2fe | 838 | mgid.raw); |
335a64a5 OG |
839 | continue; |
840 | } | |
841 | ||
1da177e4 | 842 | /* Not found or send-only group, let's add a new entry */ |
5b095d98 | 843 | ipoib_dbg_mcast(priv, "adding multicast entry for mgid %pI6\n", |
fcace2fe | 844 | mgid.raw); |
1da177e4 LT |
845 | |
846 | nmcast = ipoib_mcast_alloc(dev, 0); | |
847 | if (!nmcast) { | |
848 | ipoib_warn(priv, "unable to allocate memory for multicast structure\n"); | |
849 | continue; | |
850 | } | |
851 | ||
852 | set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags); | |
853 | ||
854 | nmcast->mcmember.mgid = mgid; | |
855 | ||
856 | if (mcast) { | |
857 | /* Destroy the send only entry */ | |
179e0917 | 858 | list_move_tail(&mcast->list, &remove_list); |
1da177e4 LT |
859 | |
860 | rb_replace_node(&mcast->rb_node, | |
861 | &nmcast->rb_node, | |
862 | &priv->multicast_tree); | |
863 | } else | |
864 | __ipoib_mcast_add(dev, nmcast); | |
865 | ||
866 | list_add_tail(&nmcast->list, &priv->multicast_list); | |
867 | } | |
868 | ||
869 | if (mcast) | |
870 | set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); | |
871 | } | |
872 | ||
873 | /* Remove all of the entries don't exist anymore */ | |
874 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { | |
875 | if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) && | |
876 | !test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
5b095d98 | 877 | ipoib_dbg_mcast(priv, "deleting multicast group %pI6\n", |
fcace2fe | 878 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
879 | |
880 | rb_erase(&mcast->rb_node, &priv->multicast_tree); | |
881 | ||
882 | /* Move to the remove list */ | |
179e0917 | 883 | list_move_tail(&mcast->list, &remove_list); |
1da177e4 LT |
884 | } |
885 | } | |
78bfe0b5 MT |
886 | |
887 | spin_unlock(&priv->lock); | |
e308a5d8 | 888 | netif_addr_unlock(dev); |
932ff279 | 889 | local_irq_restore(flags); |
1da177e4 LT |
890 | |
891 | /* We have to cancel outside of the spinlock */ | |
892 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { | |
893 | ipoib_mcast_leave(mcast->dev, mcast); | |
894 | ipoib_mcast_free(mcast); | |
895 | } | |
896 | ||
897 | if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) | |
898 | ipoib_mcast_start_thread(dev); | |
899 | } | |
900 | ||
8ae5a8a2 RD |
901 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
902 | ||
1da177e4 LT |
903 | struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev) |
904 | { | |
905 | struct ipoib_mcast_iter *iter; | |
906 | ||
907 | iter = kmalloc(sizeof *iter, GFP_KERNEL); | |
908 | if (!iter) | |
909 | return NULL; | |
910 | ||
911 | iter->dev = dev; | |
1732b0ef | 912 | memset(iter->mgid.raw, 0, 16); |
1da177e4 LT |
913 | |
914 | if (ipoib_mcast_iter_next(iter)) { | |
1732b0ef | 915 | kfree(iter); |
1da177e4 LT |
916 | return NULL; |
917 | } | |
918 | ||
919 | return iter; | |
920 | } | |
921 | ||
1da177e4 LT |
922 | int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter) |
923 | { | |
924 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); | |
925 | struct rb_node *n; | |
926 | struct ipoib_mcast *mcast; | |
927 | int ret = 1; | |
928 | ||
929 | spin_lock_irq(&priv->lock); | |
930 | ||
931 | n = rb_first(&priv->multicast_tree); | |
932 | ||
933 | while (n) { | |
934 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); | |
935 | ||
936 | if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw, | |
937 | sizeof (union ib_gid)) < 0) { | |
938 | iter->mgid = mcast->mcmember.mgid; | |
939 | iter->created = mcast->created; | |
940 | iter->queuelen = skb_queue_len(&mcast->pkt_queue); | |
941 | iter->complete = !!mcast->ah; | |
942 | iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY)); | |
943 | ||
944 | ret = 0; | |
945 | ||
946 | break; | |
947 | } | |
948 | ||
949 | n = rb_next(n); | |
950 | } | |
951 | ||
952 | spin_unlock_irq(&priv->lock); | |
953 | ||
954 | return ret; | |
955 | } | |
956 | ||
957 | void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, | |
958 | union ib_gid *mgid, | |
959 | unsigned long *created, | |
960 | unsigned int *queuelen, | |
961 | unsigned int *complete, | |
962 | unsigned int *send_only) | |
963 | { | |
964 | *mgid = iter->mgid; | |
965 | *created = iter->created; | |
966 | *queuelen = iter->queuelen; | |
967 | *complete = iter->complete; | |
968 | *send_only = iter->send_only; | |
969 | } | |
8ae5a8a2 RD |
970 | |
971 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |