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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; |
1da177e4 LT |
193 | } |
194 | ||
195 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
196 | if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { | |
5b095d98 | 197 | ipoib_warn(priv, "multicast group %pI6 already attached\n", |
fcace2fe | 198 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
199 | |
200 | return 0; | |
201 | } | |
202 | ||
203 | ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid), | |
d0de1362 | 204 | &mcast->mcmember.mgid, set_qkey); |
1da177e4 | 205 | if (ret < 0) { |
5b095d98 | 206 | ipoib_warn(priv, "couldn't attach QP to multicast group %pI6\n", |
fcace2fe | 207 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
208 | |
209 | clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags); | |
210 | return ret; | |
211 | } | |
212 | } | |
213 | ||
214 | { | |
215 | struct ib_ah_attr av = { | |
216 | .dlid = be16_to_cpu(mcast->mcmember.mlid), | |
217 | .port_num = priv->port, | |
218 | .sl = mcast->mcmember.sl, | |
219 | .ah_flags = IB_AH_GRH, | |
bf6a9e31 | 220 | .static_rate = mcast->mcmember.rate, |
1da177e4 LT |
221 | .grh = { |
222 | .flow_label = be32_to_cpu(mcast->mcmember.flow_label), | |
223 | .hop_limit = mcast->mcmember.hop_limit, | |
224 | .sgid_index = 0, | |
225 | .traffic_class = mcast->mcmember.traffic_class | |
226 | } | |
227 | }; | |
1da177e4 LT |
228 | av.grh.dgid = mcast->mcmember.mgid; |
229 | ||
7343b231 | 230 | ah = ipoib_create_ah(dev, priv->pd, &av); |
3874397c MM |
231 | if (IS_ERR(ah)) { |
232 | ipoib_warn(priv, "ib_address_create failed %ld\n", | |
233 | -PTR_ERR(ah)); | |
234 | /* use original error */ | |
235 | return PTR_ERR(ah); | |
1da177e4 | 236 | } else { |
624d01f8 OG |
237 | spin_lock_irq(&priv->lock); |
238 | mcast->ah = ah; | |
239 | spin_unlock_irq(&priv->lock); | |
240 | ||
5b095d98 | 241 | ipoib_dbg_mcast(priv, "MGID %pI6 AV %p, LID 0x%04x, SL %d\n", |
fcace2fe | 242 | mcast->mcmember.mgid.raw, |
1da177e4 LT |
243 | mcast->ah->ah, |
244 | be16_to_cpu(mcast->mcmember.mlid), | |
245 | mcast->mcmember.sl); | |
246 | } | |
247 | } | |
248 | ||
249 | /* actually send any queued packets */ | |
943c246e | 250 | netif_tx_lock_bh(dev); |
1da177e4 LT |
251 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
252 | struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue); | |
69cce1d1 | 253 | |
943c246e | 254 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
255 | |
256 | skb->dev = dev; | |
1da177e4 LT |
257 | if (dev_queue_xmit(skb)) |
258 | ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n"); | |
936d7de3 | 259 | |
943c246e | 260 | netif_tx_lock_bh(dev); |
1da177e4 | 261 | } |
943c246e | 262 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
263 | |
264 | return 0; | |
265 | } | |
266 | ||
faec2f7b | 267 | static int |
1da177e4 | 268 | ipoib_mcast_sendonly_join_complete(int status, |
faec2f7b | 269 | struct ib_sa_multicast *multicast) |
1da177e4 | 270 | { |
faec2f7b | 271 | struct ipoib_mcast *mcast = multicast->context; |
1da177e4 LT |
272 | struct net_device *dev = mcast->dev; |
273 | ||
faec2f7b SH |
274 | /* We trap for port events ourselves. */ |
275 | if (status == -ENETRESET) | |
e7a623d2 | 276 | return 0; |
faec2f7b | 277 | |
1da177e4 | 278 | if (!status) |
faec2f7b SH |
279 | status = ipoib_mcast_join_finish(mcast, &multicast->rec); |
280 | ||
281 | if (status) { | |
1da177e4 | 282 | if (mcast->logcount++ < 20) |
e7a623d2 | 283 | ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for %pI6, status %d\n", |
fcace2fe | 284 | mcast->mcmember.mgid.raw, status); |
1da177e4 LT |
285 | |
286 | /* Flush out any queued packets */ | |
943c246e | 287 | netif_tx_lock_bh(dev); |
b36f170b | 288 | while (!skb_queue_empty(&mcast->pkt_queue)) { |
de903512 | 289 | ++dev->stats.tx_dropped; |
8c608a32 | 290 | dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue)); |
b36f170b | 291 | } |
943c246e | 292 | netif_tx_unlock_bh(dev); |
e7a623d2 RD |
293 | |
294 | /* Clear the busy flag so we try again */ | |
295 | status = test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, | |
296 | &mcast->flags); | |
1da177e4 | 297 | } |
faec2f7b | 298 | return status; |
1da177e4 LT |
299 | } |
300 | ||
301 | static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast) | |
302 | { | |
303 | struct net_device *dev = mcast->dev; | |
304 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
305 | struct ib_sa_mcmember_rec rec = { | |
306 | #if 0 /* Some SMs don't support send-only yet */ | |
307 | .join_state = 4 | |
308 | #else | |
309 | .join_state = 1 | |
310 | #endif | |
311 | }; | |
312 | int ret = 0; | |
313 | ||
314 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) { | |
e7a623d2 | 315 | ipoib_dbg_mcast(priv, "device shutting down, no multicast joins\n"); |
1da177e4 LT |
316 | return -ENODEV; |
317 | } | |
318 | ||
e7a623d2 RD |
319 | if (test_and_set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) { |
320 | ipoib_dbg_mcast(priv, "multicast entry busy, skipping\n"); | |
1da177e4 LT |
321 | return -EBUSY; |
322 | } | |
323 | ||
324 | rec.mgid = mcast->mcmember.mgid; | |
325 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 326 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 | 327 | |
faec2f7b SH |
328 | mcast->mc = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, |
329 | priv->port, &rec, | |
330 | IB_SA_MCMEMBER_REC_MGID | | |
331 | IB_SA_MCMEMBER_REC_PORT_GID | | |
332 | IB_SA_MCMEMBER_REC_PKEY | | |
333 | IB_SA_MCMEMBER_REC_JOIN_STATE, | |
334 | GFP_ATOMIC, | |
335 | ipoib_mcast_sendonly_join_complete, | |
336 | mcast); | |
337 | if (IS_ERR(mcast->mc)) { | |
338 | ret = PTR_ERR(mcast->mc); | |
339 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
e7a623d2 RD |
340 | ipoib_warn(priv, "ib_sa_join_multicast failed (ret = %d)\n", |
341 | ret); | |
1da177e4 | 342 | } else { |
e7a623d2 RD |
343 | ipoib_dbg_mcast(priv, "no multicast record for %pI6, starting join\n", |
344 | mcast->mcmember.mgid.raw); | |
1da177e4 LT |
345 | } |
346 | ||
347 | return ret; | |
348 | } | |
349 | ||
e8224e4b YE |
350 | void ipoib_mcast_carrier_on_task(struct work_struct *work) |
351 | { | |
352 | struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, | |
353 | carrier_on_task); | |
5ee95120 | 354 | struct ib_port_attr attr; |
e8224e4b | 355 | |
5ee95120 MS |
356 | if (ib_query_port(priv->ca, priv->port, &attr) || |
357 | attr.state != IB_PORT_ACTIVE) { | |
358 | ipoib_dbg(priv, "Keeping carrier off until IB port is active\n"); | |
359 | return; | |
360 | } | |
361 | ||
894021a7 DL |
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. However, ipoib_stop() will attempt to flush | |
366 | * the workqueue while holding the rtnl lock, so loop | |
367 | * on trylock until either we get the lock or we see | |
368 | * FLAG_OPER_UP go away as that signals that we are bailing | |
369 | * and can safely ignore the carrier on work. | |
370 | */ | |
371 | while (!rtnl_trylock()) { | |
372 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) | |
373 | return; | |
374 | else | |
375 | msleep(20); | |
376 | } | |
c84ca6d2 DL |
377 | if (!ipoib_cm_admin_enabled(priv->dev)) |
378 | dev_set_mtu(priv->dev, min(priv->mcast_mtu, priv->admin_mtu)); | |
e8224e4b YE |
379 | netif_carrier_on(priv->dev); |
380 | rtnl_unlock(); | |
381 | } | |
382 | ||
faec2f7b SH |
383 | static int ipoib_mcast_join_complete(int status, |
384 | struct ib_sa_multicast *multicast) | |
1da177e4 | 385 | { |
faec2f7b | 386 | struct ipoib_mcast *mcast = multicast->context; |
1da177e4 LT |
387 | struct net_device *dev = mcast->dev; |
388 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
389 | ||
5b095d98 | 390 | ipoib_dbg_mcast(priv, "join completion for %pI6 (status %d)\n", |
fcace2fe | 391 | mcast->mcmember.mgid.raw, status); |
1da177e4 | 392 | |
faec2f7b | 393 | /* We trap for port events ourselves. */ |
e7a623d2 RD |
394 | if (status == -ENETRESET) { |
395 | status = 0; | |
a9c8ba58 | 396 | goto out; |
e7a623d2 | 397 | } |
faec2f7b SH |
398 | |
399 | if (!status) | |
400 | status = ipoib_mcast_join_finish(mcast, &multicast->rec); | |
401 | ||
402 | if (!status) { | |
ce5b65cc | 403 | mcast->backoff = 1; |
e7a623d2 | 404 | mutex_lock(&mcast_mutex); |
1da177e4 | 405 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
0306eda2 RD |
406 | queue_delayed_work(ipoib_workqueue, |
407 | &priv->mcast_task, 0); | |
e7a623d2 | 408 | mutex_unlock(&mcast_mutex); |
55c9adde | 409 | |
e8224e4b | 410 | /* |
0306eda2 | 411 | * Defer carrier on work to ipoib_workqueue to avoid a |
e8224e4b YE |
412 | * deadlock on rtnl_lock here. |
413 | */ | |
414 | if (mcast == priv->broadcast) | |
0306eda2 | 415 | queue_work(ipoib_workqueue, &priv->carrier_on_task); |
9acf6a85 | 416 | |
e7a623d2 RD |
417 | status = 0; |
418 | goto out; | |
016d9fb2 | 419 | } |
e7a623d2 RD |
420 | |
421 | if (mcast->logcount++ < 20) { | |
422 | if (status == -ETIMEDOUT || status == -EAGAIN) { | |
423 | ipoib_dbg_mcast(priv, "multicast join failed for %pI6, status %d\n", | |
424 | mcast->mcmember.mgid.raw, status); | |
425 | } else { | |
426 | ipoib_warn(priv, "multicast join failed for %pI6, status %d\n", | |
427 | mcast->mcmember.mgid.raw, status); | |
428 | } | |
429 | } | |
430 | ||
431 | mcast->backoff *= 2; | |
432 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) | |
433 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; | |
434 | ||
435 | /* Clear the busy flag so we try again */ | |
436 | status = test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
437 | ||
438 | mutex_lock(&mcast_mutex); | |
9acf6a85 | 439 | spin_lock_irq(&priv->lock); |
e7a623d2 | 440 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
0306eda2 | 441 | queue_delayed_work(ipoib_workqueue, &priv->mcast_task, |
faec2f7b | 442 | mcast->backoff * HZ); |
9acf6a85 | 443 | spin_unlock_irq(&priv->lock); |
95ed644f | 444 | mutex_unlock(&mcast_mutex); |
e7a623d2 RD |
445 | out: |
446 | complete(&mcast->done); | |
faec2f7b | 447 | return status; |
1da177e4 LT |
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 | ||
5b095d98 | 460 | ipoib_dbg_mcast(priv, "joining MGID %pI6\n", mcast->mcmember.mgid.raw); |
1da177e4 LT |
461 | |
462 | rec.mgid = mcast->mcmember.mgid; | |
463 | rec.port_gid = priv->local_gid; | |
97f52eb4 | 464 | rec.pkey = cpu_to_be16(priv->pkey); |
1da177e4 LT |
465 | |
466 | comp_mask = | |
467 | IB_SA_MCMEMBER_REC_MGID | | |
468 | IB_SA_MCMEMBER_REC_PORT_GID | | |
469 | IB_SA_MCMEMBER_REC_PKEY | | |
470 | IB_SA_MCMEMBER_REC_JOIN_STATE; | |
471 | ||
472 | if (create) { | |
473 | comp_mask |= | |
d0df6d6d RD |
474 | IB_SA_MCMEMBER_REC_QKEY | |
475 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
476 | IB_SA_MCMEMBER_REC_MTU | | |
477 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS | | |
478 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | | |
479 | IB_SA_MCMEMBER_REC_RATE | | |
480 | IB_SA_MCMEMBER_REC_SL | | |
481 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
482 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
1da177e4 LT |
483 | |
484 | rec.qkey = priv->broadcast->mcmember.qkey; | |
d0df6d6d RD |
485 | rec.mtu_selector = IB_SA_EQ; |
486 | rec.mtu = priv->broadcast->mcmember.mtu; | |
487 | rec.traffic_class = priv->broadcast->mcmember.traffic_class; | |
488 | rec.rate_selector = IB_SA_EQ; | |
489 | rec.rate = priv->broadcast->mcmember.rate; | |
1da177e4 LT |
490 | rec.sl = priv->broadcast->mcmember.sl; |
491 | rec.flow_label = priv->broadcast->mcmember.flow_label; | |
d0df6d6d | 492 | rec.hop_limit = priv->broadcast->mcmember.hop_limit; |
1da177e4 LT |
493 | } |
494 | ||
016d9fb2 | 495 | set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); |
e7a623d2 RD |
496 | init_completion(&mcast->done); |
497 | set_bit(IPOIB_MCAST_JOIN_STARTED, &mcast->flags); | |
498 | ||
faec2f7b SH |
499 | mcast->mc = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, priv->port, |
500 | &rec, comp_mask, GFP_KERNEL, | |
501 | ipoib_mcast_join_complete, mcast); | |
502 | if (IS_ERR(mcast->mc)) { | |
503 | clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags); | |
a9c8ba58 | 504 | complete(&mcast->done); |
faec2f7b SH |
505 | ret = PTR_ERR(mcast->mc); |
506 | ipoib_warn(priv, "ib_sa_join_multicast failed, status %d\n", ret); | |
1da177e4 LT |
507 | |
508 | mcast->backoff *= 2; | |
509 | if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS) | |
510 | mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS; | |
511 | ||
e7a623d2 | 512 | mutex_lock(&mcast_mutex); |
1da177e4 | 513 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
0306eda2 RD |
514 | queue_delayed_work(ipoib_workqueue, |
515 | &priv->mcast_task, | |
ce5b65cc | 516 | mcast->backoff * HZ); |
e7a623d2 | 517 | mutex_unlock(&mcast_mutex); |
faec2f7b | 518 | } |
1da177e4 LT |
519 | } |
520 | ||
c4028958 | 521 | void ipoib_mcast_join_task(struct work_struct *work) |
1da177e4 | 522 | { |
c4028958 DH |
523 | struct ipoib_dev_priv *priv = |
524 | container_of(work, struct ipoib_dev_priv, mcast_task.work); | |
525 | struct net_device *dev = priv->dev; | |
94232d9c | 526 | struct ib_port_attr port_attr; |
1da177e4 LT |
527 | |
528 | if (!test_bit(IPOIB_MCAST_RUN, &priv->flags)) | |
529 | return; | |
530 | ||
94232d9c ES |
531 | if (ib_query_port(priv->ca, priv->port, &port_attr) || |
532 | port_attr.state != IB_PORT_ACTIVE) { | |
533 | ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n", | |
534 | port_attr.state); | |
535 | return; | |
536 | } | |
68f9d83c | 537 | priv->local_lid = port_attr.lid; |
94232d9c | 538 | |
1da177e4 | 539 | if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid)) |
24bd1e4e | 540 | ipoib_warn(priv, "ib_query_gid() failed\n"); |
1da177e4 LT |
541 | else |
542 | memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); | |
543 | ||
1da177e4 | 544 | if (!priv->broadcast) { |
20b83382 RD |
545 | struct ipoib_mcast *broadcast; |
546 | ||
894021a7 | 547 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
50df48f5 YE |
548 | return; |
549 | ||
20b83382 RD |
550 | broadcast = ipoib_mcast_alloc(dev, 1); |
551 | if (!broadcast) { | |
1da177e4 | 552 | ipoib_warn(priv, "failed to allocate broadcast group\n"); |
95ed644f | 553 | mutex_lock(&mcast_mutex); |
1da177e4 | 554 | if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) |
0306eda2 RD |
555 | queue_delayed_work(ipoib_workqueue, |
556 | &priv->mcast_task, HZ); | |
95ed644f | 557 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
558 | return; |
559 | } | |
560 | ||
20b83382 RD |
561 | spin_lock_irq(&priv->lock); |
562 | memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4, | |
1da177e4 | 563 | sizeof (union ib_gid)); |
20b83382 | 564 | priv->broadcast = broadcast; |
1da177e4 | 565 | |
1da177e4 LT |
566 | __ipoib_mcast_add(dev, priv->broadcast); |
567 | spin_unlock_irq(&priv->lock); | |
568 | } | |
569 | ||
570 | if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { | |
e7a623d2 | 571 | if (!test_bit(IPOIB_MCAST_FLAG_BUSY, &priv->broadcast->flags)) |
faec2f7b | 572 | ipoib_mcast_join(dev, priv->broadcast, 0); |
1da177e4 LT |
573 | return; |
574 | } | |
575 | ||
576 | while (1) { | |
577 | struct ipoib_mcast *mcast = NULL; | |
578 | ||
579 | spin_lock_irq(&priv->lock); | |
580 | list_for_each_entry(mcast, &priv->multicast_list, list) { | |
e7a623d2 RD |
581 | if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) |
582 | && !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags) | |
583 | && !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { | |
1da177e4 LT |
584 | /* Found the next unjoined group */ |
585 | break; | |
586 | } | |
587 | } | |
588 | spin_unlock_irq(&priv->lock); | |
589 | ||
590 | if (&mcast->list == &priv->multicast_list) { | |
591 | /* All done */ | |
592 | break; | |
593 | } | |
594 | ||
e7a623d2 | 595 | ipoib_mcast_join(dev, mcast, 1); |
1da177e4 LT |
596 | return; |
597 | } | |
598 | ||
1da177e4 LT |
599 | ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n"); |
600 | ||
601 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); | |
1da177e4 LT |
602 | } |
603 | ||
604 | int ipoib_mcast_start_thread(struct net_device *dev) | |
605 | { | |
606 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
607 | ||
608 | ipoib_dbg_mcast(priv, "starting multicast thread\n"); | |
609 | ||
95ed644f | 610 | mutex_lock(&mcast_mutex); |
1da177e4 | 611 | if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags)) |
0306eda2 | 612 | queue_delayed_work(ipoib_workqueue, &priv->mcast_task, 0); |
95ed644f | 613 | mutex_unlock(&mcast_mutex); |
1da177e4 LT |
614 | |
615 | return 0; | |
616 | } | |
617 | ||
4e0ab200 | 618 | int ipoib_mcast_stop_thread(struct net_device *dev, int flush) |
1da177e4 LT |
619 | { |
620 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
1da177e4 LT |
621 | |
622 | ipoib_dbg_mcast(priv, "stopping multicast thread\n"); | |
623 | ||
95ed644f | 624 | mutex_lock(&mcast_mutex); |
1da177e4 LT |
625 | clear_bit(IPOIB_MCAST_RUN, &priv->flags); |
626 | cancel_delayed_work(&priv->mcast_task); | |
95ed644f | 627 | mutex_unlock(&mcast_mutex); |
1da177e4 | 628 | |
4e0ab200 | 629 | if (flush) |
0306eda2 | 630 | flush_workqueue(ipoib_workqueue); |
1da177e4 | 631 | |
1da177e4 LT |
632 | return 0; |
633 | } | |
634 | ||
635 | static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) | |
636 | { | |
637 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
1da177e4 LT |
638 | int ret = 0; |
639 | ||
e07832b6 SH |
640 | if (test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
641 | ib_sa_free_multicast(mcast->mc); | |
642 | ||
faec2f7b | 643 | if (test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) { |
5b095d98 | 644 | ipoib_dbg_mcast(priv, "leaving MGID %pI6\n", |
fcace2fe | 645 | mcast->mcmember.mgid.raw); |
1da177e4 | 646 | |
faec2f7b | 647 | /* Remove ourselves from the multicast group */ |
9eae554c RD |
648 | ret = ib_detach_mcast(priv->qp, &mcast->mcmember.mgid, |
649 | be16_to_cpu(mcast->mcmember.mlid)); | |
faec2f7b | 650 | if (ret) |
9eae554c | 651 | ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret); |
faec2f7b | 652 | } |
1da177e4 | 653 | |
1da177e4 LT |
654 | return 0; |
655 | } | |
656 | ||
b63b70d8 | 657 | void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb) |
1da177e4 LT |
658 | { |
659 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
660 | struct ipoib_mcast *mcast; | |
943c246e | 661 | unsigned long flags; |
b63b70d8 | 662 | void *mgid = daddr + 4; |
700db99d | 663 | |
943c246e | 664 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 665 | |
b3e2749b | 666 | if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags) || |
20b83382 RD |
667 | !priv->broadcast || |
668 | !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) { | |
de903512 | 669 | ++dev->stats.tx_dropped; |
479a0796 MT |
670 | dev_kfree_skb_any(skb); |
671 | goto unlock; | |
672 | } | |
673 | ||
1da177e4 LT |
674 | mcast = __ipoib_mcast_find(dev, mgid); |
675 | if (!mcast) { | |
676 | /* Let's create a new send only group now */ | |
5b095d98 | 677 | ipoib_dbg_mcast(priv, "setting up send only multicast group for %pI6\n", |
fcace2fe | 678 | mgid); |
1da177e4 LT |
679 | |
680 | mcast = ipoib_mcast_alloc(dev, 0); | |
681 | if (!mcast) { | |
682 | ipoib_warn(priv, "unable to allocate memory for " | |
683 | "multicast structure\n"); | |
de903512 | 684 | ++dev->stats.tx_dropped; |
1da177e4 LT |
685 | dev_kfree_skb_any(skb); |
686 | goto out; | |
687 | } | |
688 | ||
689 | set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags); | |
37c22a77 | 690 | memcpy(mcast->mcmember.mgid.raw, mgid, sizeof (union ib_gid)); |
1da177e4 LT |
691 | __ipoib_mcast_add(dev, mcast); |
692 | list_add_tail(&mcast->list, &priv->multicast_list); | |
693 | } | |
694 | ||
695 | if (!mcast->ah) { | |
696 | if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE) | |
697 | skb_queue_tail(&mcast->pkt_queue, skb); | |
b36f170b | 698 | else { |
de903512 | 699 | ++dev->stats.tx_dropped; |
1da177e4 | 700 | dev_kfree_skb_any(skb); |
b36f170b | 701 | } |
1da177e4 | 702 | |
faec2f7b | 703 | if (test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) |
1da177e4 LT |
704 | ipoib_dbg_mcast(priv, "no address vector, " |
705 | "but multicast join already started\n"); | |
e7a623d2 RD |
706 | else if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) |
707 | ipoib_mcast_sendonly_join(mcast); | |
1da177e4 LT |
708 | |
709 | /* | |
710 | * If lookup completes between here and out:, don't | |
711 | * want to send packet twice. | |
712 | */ | |
713 | mcast = NULL; | |
714 | } | |
715 | ||
716 | out: | |
717 | if (mcast && mcast->ah) { | |
b63b70d8 SP |
718 | struct ipoib_neigh *neigh; |
719 | ||
720 | spin_unlock_irqrestore(&priv->lock, flags); | |
721 | neigh = ipoib_neigh_get(dev, daddr); | |
722 | spin_lock_irqsave(&priv->lock, flags); | |
723 | if (!neigh) { | |
b63b70d8 | 724 | neigh = ipoib_neigh_alloc(daddr, dev); |
b63b70d8 SP |
725 | if (neigh) { |
726 | kref_get(&mcast->ah->ref); | |
727 | neigh->ah = mcast->ah; | |
728 | list_add_tail(&neigh->list, &mcast->neigh_list); | |
1da177e4 LT |
729 | } |
730 | } | |
721d67cd | 731 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 732 | ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); |
b63b70d8 SP |
733 | if (neigh) |
734 | ipoib_neigh_put(neigh); | |
721d67cd | 735 | return; |
1da177e4 LT |
736 | } |
737 | ||
479a0796 | 738 | unlock: |
943c246e | 739 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
740 | } |
741 | ||
742 | void ipoib_mcast_dev_flush(struct net_device *dev) | |
743 | { | |
744 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
745 | LIST_HEAD(remove_list); | |
988bd503 | 746 | struct ipoib_mcast *mcast, *tmcast; |
1da177e4 LT |
747 | unsigned long flags; |
748 | ||
749 | ipoib_dbg_mcast(priv, "flushing multicast list\n"); | |
750 | ||
751 | spin_lock_irqsave(&priv->lock, flags); | |
1da177e4 | 752 | |
988bd503 EC |
753 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { |
754 | list_del(&mcast->list); | |
755 | rb_erase(&mcast->rb_node, &priv->multicast_tree); | |
756 | list_add_tail(&mcast->list, &remove_list); | |
1da177e4 LT |
757 | } |
758 | ||
759 | if (priv->broadcast) { | |
3cd96564 | 760 | rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree); |
988bd503 EC |
761 | list_add_tail(&priv->broadcast->list, &remove_list); |
762 | priv->broadcast = NULL; | |
1da177e4 LT |
763 | } |
764 | ||
765 | spin_unlock_irqrestore(&priv->lock, flags); | |
766 | ||
962121b4 | 767 | /* seperate between the wait to the leave*/ |
a9c8ba58 | 768 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) |
e7a623d2 | 769 | if (test_bit(IPOIB_MCAST_JOIN_STARTED, &mcast->flags)) |
a9c8ba58 ES |
770 | wait_for_completion(&mcast->done); |
771 | ||
1da177e4 LT |
772 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
773 | ipoib_mcast_leave(dev, mcast); | |
774 | ipoib_mcast_free(mcast); | |
775 | } | |
776 | } | |
777 | ||
3e4aa12f | 778 | static int ipoib_mcast_addr_is_valid(const u8 *addr, const u8 *broadcast) |
5e47596b | 779 | { |
5e47596b JG |
780 | /* reserved QPN, prefix, scope */ |
781 | if (memcmp(addr, broadcast, 6)) | |
782 | return 0; | |
783 | /* signature lower, pkey */ | |
784 | if (memcmp(addr + 7, broadcast + 7, 3)) | |
785 | return 0; | |
786 | return 1; | |
787 | } | |
788 | ||
c4028958 | 789 | void ipoib_mcast_restart_task(struct work_struct *work) |
1da177e4 | 790 | { |
c4028958 DH |
791 | struct ipoib_dev_priv *priv = |
792 | container_of(work, struct ipoib_dev_priv, restart_task); | |
793 | struct net_device *dev = priv->dev; | |
22bedad3 | 794 | struct netdev_hw_addr *ha; |
1da177e4 LT |
795 | struct ipoib_mcast *mcast, *tmcast; |
796 | LIST_HEAD(remove_list); | |
797 | unsigned long flags; | |
335a64a5 | 798 | struct ib_sa_mcmember_rec rec; |
1da177e4 LT |
799 | |
800 | ipoib_dbg_mcast(priv, "restarting multicast task\n"); | |
801 | ||
4e0ab200 RD |
802 | ipoib_mcast_stop_thread(dev, 0); |
803 | ||
932ff279 | 804 | local_irq_save(flags); |
e308a5d8 | 805 | netif_addr_lock(dev); |
78bfe0b5 | 806 | spin_lock(&priv->lock); |
1da177e4 LT |
807 | |
808 | /* | |
809 | * Unfortunately, the networking core only gives us a list of all of | |
810 | * the multicast hardware addresses. We need to figure out which ones | |
811 | * are new and which ones have been removed | |
812 | */ | |
813 | ||
814 | /* Clear out the found flag */ | |
815 | list_for_each_entry(mcast, &priv->multicast_list, list) | |
816 | clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); | |
817 | ||
818 | /* Mark all of the entries that are found or don't exist */ | |
22bedad3 | 819 | netdev_for_each_mc_addr(ha, dev) { |
1da177e4 LT |
820 | union ib_gid mgid; |
821 | ||
22bedad3 | 822 | if (!ipoib_mcast_addr_is_valid(ha->addr, dev->broadcast)) |
5e47596b JG |
823 | continue; |
824 | ||
22bedad3 | 825 | memcpy(mgid.raw, ha->addr + 4, sizeof mgid); |
1da177e4 | 826 | |
1da177e4 LT |
827 | mcast = __ipoib_mcast_find(dev, &mgid); |
828 | if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
829 | struct ipoib_mcast *nmcast; | |
830 | ||
335a64a5 OG |
831 | /* ignore group which is directly joined by userspace */ |
832 | if (test_bit(IPOIB_FLAG_UMCAST, &priv->flags) && | |
833 | !ib_sa_get_mcmember_rec(priv->ca, priv->port, &mgid, &rec)) { | |
5b095d98 | 834 | ipoib_dbg_mcast(priv, "ignoring multicast entry for mgid %pI6\n", |
fcace2fe | 835 | mgid.raw); |
335a64a5 OG |
836 | continue; |
837 | } | |
838 | ||
1da177e4 | 839 | /* Not found or send-only group, let's add a new entry */ |
5b095d98 | 840 | ipoib_dbg_mcast(priv, "adding multicast entry for mgid %pI6\n", |
fcace2fe | 841 | mgid.raw); |
1da177e4 LT |
842 | |
843 | nmcast = ipoib_mcast_alloc(dev, 0); | |
844 | if (!nmcast) { | |
845 | ipoib_warn(priv, "unable to allocate memory for multicast structure\n"); | |
846 | continue; | |
847 | } | |
848 | ||
849 | set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags); | |
850 | ||
851 | nmcast->mcmember.mgid = mgid; | |
852 | ||
853 | if (mcast) { | |
854 | /* Destroy the send only entry */ | |
179e0917 | 855 | list_move_tail(&mcast->list, &remove_list); |
1da177e4 LT |
856 | |
857 | rb_replace_node(&mcast->rb_node, | |
858 | &nmcast->rb_node, | |
859 | &priv->multicast_tree); | |
860 | } else | |
861 | __ipoib_mcast_add(dev, nmcast); | |
862 | ||
863 | list_add_tail(&nmcast->list, &priv->multicast_list); | |
864 | } | |
865 | ||
866 | if (mcast) | |
867 | set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags); | |
868 | } | |
869 | ||
870 | /* Remove all of the entries don't exist anymore */ | |
871 | list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) { | |
872 | if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) && | |
873 | !test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) { | |
5b095d98 | 874 | ipoib_dbg_mcast(priv, "deleting multicast group %pI6\n", |
fcace2fe | 875 | mcast->mcmember.mgid.raw); |
1da177e4 LT |
876 | |
877 | rb_erase(&mcast->rb_node, &priv->multicast_tree); | |
878 | ||
879 | /* Move to the remove list */ | |
179e0917 | 880 | list_move_tail(&mcast->list, &remove_list); |
1da177e4 LT |
881 | } |
882 | } | |
78bfe0b5 MT |
883 | |
884 | spin_unlock(&priv->lock); | |
e308a5d8 | 885 | netif_addr_unlock(dev); |
932ff279 | 886 | local_irq_restore(flags); |
1da177e4 | 887 | |
962121b4 | 888 | /* We have to cancel outside of the spinlock */ |
1da177e4 LT |
889 | list_for_each_entry_safe(mcast, tmcast, &remove_list, list) { |
890 | ipoib_mcast_leave(mcast->dev, mcast); | |
891 | ipoib_mcast_free(mcast); | |
892 | } | |
962121b4 | 893 | |
894021a7 | 894 | if (test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) |
962121b4 | 895 | ipoib_mcast_start_thread(dev); |
1da177e4 LT |
896 | } |
897 | ||
8ae5a8a2 RD |
898 | #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG |
899 | ||
1da177e4 LT |
900 | struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev) |
901 | { | |
902 | struct ipoib_mcast_iter *iter; | |
903 | ||
904 | iter = kmalloc(sizeof *iter, GFP_KERNEL); | |
905 | if (!iter) | |
906 | return NULL; | |
907 | ||
908 | iter->dev = dev; | |
1732b0ef | 909 | memset(iter->mgid.raw, 0, 16); |
1da177e4 LT |
910 | |
911 | if (ipoib_mcast_iter_next(iter)) { | |
1732b0ef | 912 | kfree(iter); |
1da177e4 LT |
913 | return NULL; |
914 | } | |
915 | ||
916 | return iter; | |
917 | } | |
918 | ||
1da177e4 LT |
919 | int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter) |
920 | { | |
921 | struct ipoib_dev_priv *priv = netdev_priv(iter->dev); | |
922 | struct rb_node *n; | |
923 | struct ipoib_mcast *mcast; | |
924 | int ret = 1; | |
925 | ||
926 | spin_lock_irq(&priv->lock); | |
927 | ||
928 | n = rb_first(&priv->multicast_tree); | |
929 | ||
930 | while (n) { | |
931 | mcast = rb_entry(n, struct ipoib_mcast, rb_node); | |
932 | ||
933 | if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw, | |
934 | sizeof (union ib_gid)) < 0) { | |
935 | iter->mgid = mcast->mcmember.mgid; | |
936 | iter->created = mcast->created; | |
937 | iter->queuelen = skb_queue_len(&mcast->pkt_queue); | |
938 | iter->complete = !!mcast->ah; | |
939 | iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY)); | |
940 | ||
941 | ret = 0; | |
942 | ||
943 | break; | |
944 | } | |
945 | ||
946 | n = rb_next(n); | |
947 | } | |
948 | ||
949 | spin_unlock_irq(&priv->lock); | |
950 | ||
951 | return ret; | |
952 | } | |
953 | ||
954 | void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter, | |
955 | union ib_gid *mgid, | |
956 | unsigned long *created, | |
957 | unsigned int *queuelen, | |
958 | unsigned int *complete, | |
959 | unsigned int *send_only) | |
960 | { | |
961 | *mgid = iter->mgid; | |
962 | *created = iter->created; | |
963 | *queuelen = iter->queuelen; | |
964 | *complete = iter->complete; | |
965 | *send_only = iter->send_only; | |
966 | } | |
8ae5a8a2 RD |
967 | |
968 | #endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */ |