Commit | Line | Data |
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e51060f0 SH |
1 | /* |
2 | * Copyright (c) 2005 Voltaire Inc. All rights reserved. | |
3 | * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved. | |
4 | * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved. | |
5 | * Copyright (c) 2005-2006 Intel Corporation. All rights reserved. | |
6 | * | |
a9474917 SH |
7 | * This software is available to you under a choice of one of two |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
e51060f0 | 12 | * |
a9474917 SH |
13 | * Redistribution and use in source and binary forms, with or |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
e51060f0 | 16 | * |
a9474917 SH |
17 | * - Redistributions of source code must retain the above |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
e51060f0 | 20 | * |
a9474917 SH |
21 | * - Redistributions in binary form must reproduce the above |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
e51060f0 | 25 | * |
a9474917 SH |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
e51060f0 SH |
34 | */ |
35 | ||
36 | #include <linux/completion.h> | |
37 | #include <linux/in.h> | |
38 | #include <linux/in6.h> | |
39 | #include <linux/mutex.h> | |
40 | #include <linux/random.h> | |
41 | #include <linux/idr.h> | |
07ebafba | 42 | #include <linux/inetdevice.h> |
e51060f0 SH |
43 | |
44 | #include <net/tcp.h> | |
45 | ||
46 | #include <rdma/rdma_cm.h> | |
47 | #include <rdma/rdma_cm_ib.h> | |
48 | #include <rdma/ib_cache.h> | |
49 | #include <rdma/ib_cm.h> | |
50 | #include <rdma/ib_sa.h> | |
07ebafba | 51 | #include <rdma/iw_cm.h> |
e51060f0 SH |
52 | |
53 | MODULE_AUTHOR("Sean Hefty"); | |
54 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
55 | MODULE_LICENSE("Dual BSD/GPL"); | |
56 | ||
57 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
d5bb7599 | 58 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 59 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
e51060f0 SH |
60 | |
61 | static void cma_add_one(struct ib_device *device); | |
62 | static void cma_remove_one(struct ib_device *device); | |
63 | ||
64 | static struct ib_client cma_client = { | |
65 | .name = "cma", | |
66 | .add = cma_add_one, | |
67 | .remove = cma_remove_one | |
68 | }; | |
69 | ||
c1a0b23b | 70 | static struct ib_sa_client sa_client; |
7a118df3 | 71 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
72 | static LIST_HEAD(dev_list); |
73 | static LIST_HEAD(listen_any_list); | |
74 | static DEFINE_MUTEX(lock); | |
75 | static struct workqueue_struct *cma_wq; | |
76 | static DEFINE_IDR(sdp_ps); | |
77 | static DEFINE_IDR(tcp_ps); | |
628e5f6d | 78 | static DEFINE_IDR(udp_ps); |
c8f6a362 | 79 | static DEFINE_IDR(ipoib_ps); |
aedec080 | 80 | static int next_port; |
e51060f0 SH |
81 | |
82 | struct cma_device { | |
83 | struct list_head list; | |
84 | struct ib_device *device; | |
e51060f0 SH |
85 | struct completion comp; |
86 | atomic_t refcount; | |
87 | struct list_head id_list; | |
88 | }; | |
89 | ||
90 | enum cma_state { | |
91 | CMA_IDLE, | |
92 | CMA_ADDR_QUERY, | |
93 | CMA_ADDR_RESOLVED, | |
94 | CMA_ROUTE_QUERY, | |
95 | CMA_ROUTE_RESOLVED, | |
96 | CMA_CONNECT, | |
97 | CMA_DISCONNECT, | |
98 | CMA_ADDR_BOUND, | |
99 | CMA_LISTEN, | |
100 | CMA_DEVICE_REMOVAL, | |
101 | CMA_DESTROYING | |
102 | }; | |
103 | ||
104 | struct rdma_bind_list { | |
105 | struct idr *ps; | |
106 | struct hlist_head owners; | |
107 | unsigned short port; | |
108 | }; | |
109 | ||
110 | /* | |
111 | * Device removal can occur at anytime, so we need extra handling to | |
112 | * serialize notifying the user of device removal with other callbacks. | |
113 | * We do this by disabling removal notification while a callback is in process, | |
114 | * and reporting it after the callback completes. | |
115 | */ | |
116 | struct rdma_id_private { | |
117 | struct rdma_cm_id id; | |
118 | ||
119 | struct rdma_bind_list *bind_list; | |
120 | struct hlist_node node; | |
d02d1f53 SH |
121 | struct list_head list; /* listen_any_list or cma_device.list */ |
122 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 123 | struct cma_device *cma_dev; |
c8f6a362 | 124 | struct list_head mc_list; |
e51060f0 | 125 | |
d02d1f53 | 126 | int internal_id; |
e51060f0 SH |
127 | enum cma_state state; |
128 | spinlock_t lock; | |
c5483388 SH |
129 | struct mutex qp_mutex; |
130 | ||
e51060f0 SH |
131 | struct completion comp; |
132 | atomic_t refcount; | |
de910bd9 | 133 | struct mutex handler_mutex; |
e51060f0 SH |
134 | |
135 | int backlog; | |
136 | int timeout_ms; | |
137 | struct ib_sa_query *query; | |
138 | int query_id; | |
139 | union { | |
140 | struct ib_cm_id *ib; | |
07ebafba | 141 | struct iw_cm_id *iw; |
e51060f0 SH |
142 | } cm_id; |
143 | ||
144 | u32 seq_num; | |
c8f6a362 | 145 | u32 qkey; |
e51060f0 | 146 | u32 qp_num; |
e51060f0 | 147 | u8 srq; |
a81c994d | 148 | u8 tos; |
e51060f0 SH |
149 | }; |
150 | ||
c8f6a362 SH |
151 | struct cma_multicast { |
152 | struct rdma_id_private *id_priv; | |
153 | union { | |
154 | struct ib_sa_multicast *ib; | |
155 | } multicast; | |
156 | struct list_head list; | |
157 | void *context; | |
158 | struct sockaddr addr; | |
159 | u8 pad[sizeof(struct sockaddr_in6) - | |
160 | sizeof(struct sockaddr)]; | |
161 | }; | |
162 | ||
e51060f0 SH |
163 | struct cma_work { |
164 | struct work_struct work; | |
165 | struct rdma_id_private *id; | |
166 | enum cma_state old_state; | |
167 | enum cma_state new_state; | |
168 | struct rdma_cm_event event; | |
169 | }; | |
170 | ||
dd5bdff8 OG |
171 | struct cma_ndev_work { |
172 | struct work_struct work; | |
173 | struct rdma_id_private *id; | |
174 | struct rdma_cm_event event; | |
175 | }; | |
176 | ||
e51060f0 SH |
177 | union cma_ip_addr { |
178 | struct in6_addr ip6; | |
179 | struct { | |
1b90c137 AV |
180 | __be32 pad[3]; |
181 | __be32 addr; | |
e51060f0 SH |
182 | } ip4; |
183 | }; | |
184 | ||
185 | struct cma_hdr { | |
186 | u8 cma_version; | |
187 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 188 | __be16 port; |
e51060f0 SH |
189 | union cma_ip_addr src_addr; |
190 | union cma_ip_addr dst_addr; | |
191 | }; | |
192 | ||
193 | struct sdp_hh { | |
194 | u8 bsdh[16]; | |
195 | u8 sdp_version; /* Major version: 7:4 */ | |
196 | u8 ip_version; /* IP version: 7:4 */ | |
197 | u8 sdp_specific1[10]; | |
1b90c137 AV |
198 | __be16 port; |
199 | __be16 sdp_specific2; | |
e51060f0 SH |
200 | union cma_ip_addr src_addr; |
201 | union cma_ip_addr dst_addr; | |
202 | }; | |
203 | ||
204 | struct sdp_hah { | |
205 | u8 bsdh[16]; | |
206 | u8 sdp_version; | |
207 | }; | |
208 | ||
209 | #define CMA_VERSION 0x00 | |
210 | #define SDP_MAJ_VERSION 0x2 | |
211 | ||
212 | static int cma_comp(struct rdma_id_private *id_priv, enum cma_state comp) | |
213 | { | |
214 | unsigned long flags; | |
215 | int ret; | |
216 | ||
217 | spin_lock_irqsave(&id_priv->lock, flags); | |
218 | ret = (id_priv->state == comp); | |
219 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
220 | return ret; | |
221 | } | |
222 | ||
223 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
224 | enum cma_state comp, enum cma_state exch) | |
225 | { | |
226 | unsigned long flags; | |
227 | int ret; | |
228 | ||
229 | spin_lock_irqsave(&id_priv->lock, flags); | |
230 | if ((ret = (id_priv->state == comp))) | |
231 | id_priv->state = exch; | |
232 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
233 | return ret; | |
234 | } | |
235 | ||
236 | static enum cma_state cma_exch(struct rdma_id_private *id_priv, | |
237 | enum cma_state exch) | |
238 | { | |
239 | unsigned long flags; | |
240 | enum cma_state old; | |
241 | ||
242 | spin_lock_irqsave(&id_priv->lock, flags); | |
243 | old = id_priv->state; | |
244 | id_priv->state = exch; | |
245 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
246 | return old; | |
247 | } | |
248 | ||
249 | static inline u8 cma_get_ip_ver(struct cma_hdr *hdr) | |
250 | { | |
251 | return hdr->ip_version >> 4; | |
252 | } | |
253 | ||
254 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
255 | { | |
256 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
257 | } | |
258 | ||
259 | static inline u8 sdp_get_majv(u8 sdp_version) | |
260 | { | |
261 | return sdp_version >> 4; | |
262 | } | |
263 | ||
264 | static inline u8 sdp_get_ip_ver(struct sdp_hh *hh) | |
265 | { | |
266 | return hh->ip_version >> 4; | |
267 | } | |
268 | ||
269 | static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) | |
270 | { | |
271 | hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF); | |
272 | } | |
273 | ||
c8f6a362 SH |
274 | static inline int cma_is_ud_ps(enum rdma_port_space ps) |
275 | { | |
276 | return (ps == RDMA_PS_UDP || ps == RDMA_PS_IPOIB); | |
277 | } | |
278 | ||
e51060f0 SH |
279 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
280 | struct cma_device *cma_dev) | |
281 | { | |
282 | atomic_inc(&cma_dev->refcount); | |
283 | id_priv->cma_dev = cma_dev; | |
284 | id_priv->id.device = cma_dev->device; | |
285 | list_add_tail(&id_priv->list, &cma_dev->id_list); | |
286 | } | |
287 | ||
288 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
289 | { | |
290 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
291 | complete(&cma_dev->comp); | |
292 | } | |
293 | ||
294 | static void cma_detach_from_dev(struct rdma_id_private *id_priv) | |
295 | { | |
296 | list_del(&id_priv->list); | |
297 | cma_deref_dev(id_priv->cma_dev); | |
298 | id_priv->cma_dev = NULL; | |
299 | } | |
300 | ||
c8f6a362 SH |
301 | static int cma_set_qkey(struct ib_device *device, u8 port_num, |
302 | enum rdma_port_space ps, | |
303 | struct rdma_dev_addr *dev_addr, u32 *qkey) | |
304 | { | |
305 | struct ib_sa_mcmember_rec rec; | |
306 | int ret = 0; | |
307 | ||
308 | switch (ps) { | |
309 | case RDMA_PS_UDP: | |
310 | *qkey = RDMA_UDP_QKEY; | |
311 | break; | |
312 | case RDMA_PS_IPOIB: | |
313 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
314 | ret = ib_sa_get_mcmember_rec(device, port_num, &rec.mgid, &rec); | |
315 | *qkey = be32_to_cpu(rec.qkey); | |
316 | break; | |
317 | default: | |
318 | break; | |
319 | } | |
320 | return ret; | |
321 | } | |
322 | ||
07ebafba | 323 | static int cma_acquire_dev(struct rdma_id_private *id_priv) |
e51060f0 | 324 | { |
c8f6a362 | 325 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 326 | struct cma_device *cma_dev; |
f0ee3404 | 327 | union ib_gid gid; |
e51060f0 SH |
328 | int ret = -ENODEV; |
329 | ||
c8f6a362 | 330 | switch (rdma_node_get_transport(dev_addr->dev_type)) { |
07ebafba | 331 | case RDMA_TRANSPORT_IB: |
c8f6a362 | 332 | ib_addr_get_sgid(dev_addr, &gid); |
07ebafba TT |
333 | break; |
334 | case RDMA_TRANSPORT_IWARP: | |
c8f6a362 | 335 | iw_addr_get_sgid(dev_addr, &gid); |
07ebafba TT |
336 | break; |
337 | default: | |
338 | return -ENODEV; | |
339 | } | |
61a73c70 | 340 | |
e51060f0 | 341 | list_for_each_entry(cma_dev, &dev_list, list) { |
f0ee3404 | 342 | ret = ib_find_cached_gid(cma_dev->device, &gid, |
e51060f0 SH |
343 | &id_priv->id.port_num, NULL); |
344 | if (!ret) { | |
c8f6a362 SH |
345 | ret = cma_set_qkey(cma_dev->device, |
346 | id_priv->id.port_num, | |
347 | id_priv->id.ps, dev_addr, | |
348 | &id_priv->qkey); | |
349 | if (!ret) | |
350 | cma_attach_to_dev(id_priv, cma_dev); | |
e51060f0 SH |
351 | break; |
352 | } | |
353 | } | |
e51060f0 SH |
354 | return ret; |
355 | } | |
356 | ||
e51060f0 SH |
357 | static void cma_deref_id(struct rdma_id_private *id_priv) |
358 | { | |
359 | if (atomic_dec_and_test(&id_priv->refcount)) | |
360 | complete(&id_priv->comp); | |
361 | } | |
362 | ||
de910bd9 | 363 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
8aa08602 SH |
364 | enum cma_state state) |
365 | { | |
de910bd9 OG |
366 | mutex_lock(&id_priv->handler_mutex); |
367 | if (id_priv->state != state) { | |
368 | mutex_unlock(&id_priv->handler_mutex); | |
369 | return -EINVAL; | |
370 | } | |
371 | return 0; | |
e51060f0 SH |
372 | } |
373 | ||
6c719f5c SH |
374 | static int cma_has_cm_dev(struct rdma_id_private *id_priv) |
375 | { | |
376 | return (id_priv->id.device && id_priv->cm_id.ib); | |
377 | } | |
378 | ||
e51060f0 SH |
379 | struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, |
380 | void *context, enum rdma_port_space ps) | |
381 | { | |
382 | struct rdma_id_private *id_priv; | |
383 | ||
384 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
385 | if (!id_priv) | |
386 | return ERR_PTR(-ENOMEM); | |
387 | ||
388 | id_priv->state = CMA_IDLE; | |
389 | id_priv->id.context = context; | |
390 | id_priv->id.event_handler = event_handler; | |
391 | id_priv->id.ps = ps; | |
392 | spin_lock_init(&id_priv->lock); | |
c5483388 | 393 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
394 | init_completion(&id_priv->comp); |
395 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 396 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 397 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 398 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 SH |
399 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
400 | ||
401 | return &id_priv->id; | |
402 | } | |
403 | EXPORT_SYMBOL(rdma_create_id); | |
404 | ||
c8f6a362 | 405 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
406 | { |
407 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 408 | int qp_attr_mask, ret; |
e51060f0 | 409 | |
c8f6a362 SH |
410 | qp_attr.qp_state = IB_QPS_INIT; |
411 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
412 | if (ret) |
413 | return ret; | |
414 | ||
c8f6a362 SH |
415 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
416 | if (ret) | |
417 | return ret; | |
418 | ||
419 | qp_attr.qp_state = IB_QPS_RTR; | |
420 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
421 | if (ret) | |
422 | return ret; | |
423 | ||
424 | qp_attr.qp_state = IB_QPS_RTS; | |
425 | qp_attr.sq_psn = 0; | |
426 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
427 | ||
428 | return ret; | |
e51060f0 SH |
429 | } |
430 | ||
c8f6a362 | 431 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
432 | { |
433 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 434 | int qp_attr_mask, ret; |
07ebafba TT |
435 | |
436 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
437 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
438 | if (ret) | |
439 | return ret; | |
07ebafba | 440 | |
c8f6a362 | 441 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
442 | } |
443 | ||
e51060f0 SH |
444 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
445 | struct ib_qp_init_attr *qp_init_attr) | |
446 | { | |
447 | struct rdma_id_private *id_priv; | |
448 | struct ib_qp *qp; | |
449 | int ret; | |
450 | ||
451 | id_priv = container_of(id, struct rdma_id_private, id); | |
452 | if (id->device != pd->device) | |
453 | return -EINVAL; | |
454 | ||
455 | qp = ib_create_qp(pd, qp_init_attr); | |
456 | if (IS_ERR(qp)) | |
457 | return PTR_ERR(qp); | |
458 | ||
c8f6a362 SH |
459 | if (cma_is_ud_ps(id_priv->id.ps)) |
460 | ret = cma_init_ud_qp(id_priv, qp); | |
461 | else | |
462 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
463 | if (ret) |
464 | goto err; | |
465 | ||
466 | id->qp = qp; | |
467 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
468 | id_priv->srq = (qp->srq != NULL); |
469 | return 0; | |
470 | err: | |
471 | ib_destroy_qp(qp); | |
472 | return ret; | |
473 | } | |
474 | EXPORT_SYMBOL(rdma_create_qp); | |
475 | ||
476 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
477 | { | |
c5483388 SH |
478 | struct rdma_id_private *id_priv; |
479 | ||
480 | id_priv = container_of(id, struct rdma_id_private, id); | |
481 | mutex_lock(&id_priv->qp_mutex); | |
482 | ib_destroy_qp(id_priv->id.qp); | |
483 | id_priv->id.qp = NULL; | |
484 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
485 | } |
486 | EXPORT_SYMBOL(rdma_destroy_qp); | |
487 | ||
5851bb89 SH |
488 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
489 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
490 | { |
491 | struct ib_qp_attr qp_attr; | |
492 | int qp_attr_mask, ret; | |
493 | ||
c5483388 SH |
494 | mutex_lock(&id_priv->qp_mutex); |
495 | if (!id_priv->id.qp) { | |
496 | ret = 0; | |
497 | goto out; | |
498 | } | |
e51060f0 SH |
499 | |
500 | /* Need to update QP attributes from default values. */ | |
501 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 502 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 503 | if (ret) |
c5483388 | 504 | goto out; |
e51060f0 | 505 | |
c5483388 | 506 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 507 | if (ret) |
c5483388 | 508 | goto out; |
e51060f0 SH |
509 | |
510 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 511 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 512 | if (ret) |
c5483388 | 513 | goto out; |
e51060f0 | 514 | |
5851bb89 SH |
515 | if (conn_param) |
516 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
517 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
518 | out: | |
519 | mutex_unlock(&id_priv->qp_mutex); | |
520 | return ret; | |
e51060f0 SH |
521 | } |
522 | ||
5851bb89 SH |
523 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
524 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
525 | { |
526 | struct ib_qp_attr qp_attr; | |
527 | int qp_attr_mask, ret; | |
528 | ||
c5483388 SH |
529 | mutex_lock(&id_priv->qp_mutex); |
530 | if (!id_priv->id.qp) { | |
531 | ret = 0; | |
532 | goto out; | |
533 | } | |
e51060f0 SH |
534 | |
535 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 536 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 537 | if (ret) |
c5483388 | 538 | goto out; |
e51060f0 | 539 | |
5851bb89 SH |
540 | if (conn_param) |
541 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
542 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
543 | out: | |
544 | mutex_unlock(&id_priv->qp_mutex); | |
545 | return ret; | |
e51060f0 SH |
546 | } |
547 | ||
c5483388 | 548 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
549 | { |
550 | struct ib_qp_attr qp_attr; | |
c5483388 | 551 | int ret; |
e51060f0 | 552 | |
c5483388 SH |
553 | mutex_lock(&id_priv->qp_mutex); |
554 | if (!id_priv->id.qp) { | |
555 | ret = 0; | |
556 | goto out; | |
557 | } | |
e51060f0 SH |
558 | |
559 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
560 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
561 | out: | |
562 | mutex_unlock(&id_priv->qp_mutex); | |
563 | return ret; | |
e51060f0 SH |
564 | } |
565 | ||
c8f6a362 SH |
566 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
567 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
568 | { | |
569 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
570 | int ret; | |
571 | ||
572 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
573 | ib_addr_get_pkey(dev_addr), | |
574 | &qp_attr->pkey_index); | |
575 | if (ret) | |
576 | return ret; | |
577 | ||
578 | qp_attr->port_num = id_priv->id.port_num; | |
579 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
580 | ||
581 | if (cma_is_ud_ps(id_priv->id.ps)) { | |
582 | qp_attr->qkey = id_priv->qkey; | |
583 | *qp_attr_mask |= IB_QP_QKEY; | |
584 | } else { | |
585 | qp_attr->qp_access_flags = 0; | |
586 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
587 | } | |
588 | return 0; | |
589 | } | |
590 | ||
e51060f0 SH |
591 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
592 | int *qp_attr_mask) | |
593 | { | |
594 | struct rdma_id_private *id_priv; | |
c8f6a362 | 595 | int ret = 0; |
e51060f0 SH |
596 | |
597 | id_priv = container_of(id, struct rdma_id_private, id); | |
07ebafba TT |
598 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
599 | case RDMA_TRANSPORT_IB: | |
c8f6a362 SH |
600 | if (!id_priv->cm_id.ib || cma_is_ud_ps(id_priv->id.ps)) |
601 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); | |
602 | else | |
603 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
604 | qp_attr_mask); | |
e51060f0 SH |
605 | if (qp_attr->qp_state == IB_QPS_RTR) |
606 | qp_attr->rq_psn = id_priv->seq_num; | |
607 | break; | |
07ebafba | 608 | case RDMA_TRANSPORT_IWARP: |
c8f6a362 | 609 | if (!id_priv->cm_id.iw) { |
8f076531 | 610 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
611 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
612 | } else | |
613 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
614 | qp_attr_mask); | |
07ebafba | 615 | break; |
e51060f0 SH |
616 | default: |
617 | ret = -ENOSYS; | |
618 | break; | |
619 | } | |
620 | ||
621 | return ret; | |
622 | } | |
623 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
624 | ||
625 | static inline int cma_zero_addr(struct sockaddr *addr) | |
626 | { | |
627 | struct in6_addr *ip6; | |
628 | ||
629 | if (addr->sa_family == AF_INET) | |
6360a02a JP |
630 | return ipv4_is_zeronet( |
631 | ((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
e51060f0 SH |
632 | else { |
633 | ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; | |
634 | return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | | |
5fd571cb | 635 | ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; |
e51060f0 SH |
636 | } |
637 | } | |
638 | ||
639 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
640 | { | |
6360a02a | 641 | return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr); |
e51060f0 SH |
642 | } |
643 | ||
644 | static inline int cma_any_addr(struct sockaddr *addr) | |
645 | { | |
646 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
647 | } | |
648 | ||
628e5f6d SH |
649 | static inline __be16 cma_port(struct sockaddr *addr) |
650 | { | |
651 | if (addr->sa_family == AF_INET) | |
652 | return ((struct sockaddr_in *) addr)->sin_port; | |
653 | else | |
654 | return ((struct sockaddr_in6 *) addr)->sin6_port; | |
655 | } | |
656 | ||
e51060f0 SH |
657 | static inline int cma_any_port(struct sockaddr *addr) |
658 | { | |
628e5f6d | 659 | return !cma_port(addr); |
e51060f0 SH |
660 | } |
661 | ||
662 | static int cma_get_net_info(void *hdr, enum rdma_port_space ps, | |
1b90c137 | 663 | u8 *ip_ver, __be16 *port, |
e51060f0 SH |
664 | union cma_ip_addr **src, union cma_ip_addr **dst) |
665 | { | |
666 | switch (ps) { | |
667 | case RDMA_PS_SDP: | |
668 | if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) != | |
669 | SDP_MAJ_VERSION) | |
670 | return -EINVAL; | |
671 | ||
672 | *ip_ver = sdp_get_ip_ver(hdr); | |
673 | *port = ((struct sdp_hh *) hdr)->port; | |
674 | *src = &((struct sdp_hh *) hdr)->src_addr; | |
675 | *dst = &((struct sdp_hh *) hdr)->dst_addr; | |
676 | break; | |
677 | default: | |
678 | if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION) | |
679 | return -EINVAL; | |
680 | ||
681 | *ip_ver = cma_get_ip_ver(hdr); | |
682 | *port = ((struct cma_hdr *) hdr)->port; | |
683 | *src = &((struct cma_hdr *) hdr)->src_addr; | |
684 | *dst = &((struct cma_hdr *) hdr)->dst_addr; | |
685 | break; | |
686 | } | |
687 | ||
688 | if (*ip_ver != 4 && *ip_ver != 6) | |
689 | return -EINVAL; | |
690 | return 0; | |
691 | } | |
692 | ||
693 | static void cma_save_net_info(struct rdma_addr *addr, | |
694 | struct rdma_addr *listen_addr, | |
1b90c137 | 695 | u8 ip_ver, __be16 port, |
e51060f0 SH |
696 | union cma_ip_addr *src, union cma_ip_addr *dst) |
697 | { | |
698 | struct sockaddr_in *listen4, *ip4; | |
699 | struct sockaddr_in6 *listen6, *ip6; | |
700 | ||
701 | switch (ip_ver) { | |
702 | case 4: | |
703 | listen4 = (struct sockaddr_in *) &listen_addr->src_addr; | |
704 | ip4 = (struct sockaddr_in *) &addr->src_addr; | |
705 | ip4->sin_family = listen4->sin_family; | |
706 | ip4->sin_addr.s_addr = dst->ip4.addr; | |
707 | ip4->sin_port = listen4->sin_port; | |
708 | ||
709 | ip4 = (struct sockaddr_in *) &addr->dst_addr; | |
710 | ip4->sin_family = listen4->sin_family; | |
711 | ip4->sin_addr.s_addr = src->ip4.addr; | |
712 | ip4->sin_port = port; | |
713 | break; | |
714 | case 6: | |
715 | listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr; | |
716 | ip6 = (struct sockaddr_in6 *) &addr->src_addr; | |
717 | ip6->sin6_family = listen6->sin6_family; | |
718 | ip6->sin6_addr = dst->ip6; | |
719 | ip6->sin6_port = listen6->sin6_port; | |
720 | ||
721 | ip6 = (struct sockaddr_in6 *) &addr->dst_addr; | |
722 | ip6->sin6_family = listen6->sin6_family; | |
723 | ip6->sin6_addr = src->ip6; | |
724 | ip6->sin6_port = port; | |
725 | break; | |
726 | default: | |
727 | break; | |
728 | } | |
729 | } | |
730 | ||
731 | static inline int cma_user_data_offset(enum rdma_port_space ps) | |
732 | { | |
733 | switch (ps) { | |
734 | case RDMA_PS_SDP: | |
735 | return 0; | |
736 | default: | |
737 | return sizeof(struct cma_hdr); | |
738 | } | |
739 | } | |
740 | ||
e51060f0 SH |
741 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
742 | { | |
07ebafba TT |
743 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
744 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
745 | if (id_priv->query) |
746 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
747 | break; | |
748 | default: | |
749 | break; | |
750 | } | |
751 | } | |
752 | ||
e51060f0 SH |
753 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
754 | { | |
755 | struct rdma_id_private *dev_id_priv; | |
756 | ||
d02d1f53 SH |
757 | /* |
758 | * Remove from listen_any_list to prevent added devices from spawning | |
759 | * additional listen requests. | |
760 | */ | |
e51060f0 SH |
761 | mutex_lock(&lock); |
762 | list_del(&id_priv->list); | |
763 | ||
764 | while (!list_empty(&id_priv->listen_list)) { | |
765 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
766 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
767 | /* sync with device removal to avoid duplicate destruction */ |
768 | list_del_init(&dev_id_priv->list); | |
769 | list_del(&dev_id_priv->listen_list); | |
770 | mutex_unlock(&lock); | |
771 | ||
772 | rdma_destroy_id(&dev_id_priv->id); | |
773 | mutex_lock(&lock); | |
e51060f0 SH |
774 | } |
775 | mutex_unlock(&lock); | |
776 | } | |
777 | ||
778 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
779 | enum cma_state state) | |
780 | { | |
781 | switch (state) { | |
782 | case CMA_ADDR_QUERY: | |
783 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); | |
784 | break; | |
785 | case CMA_ROUTE_QUERY: | |
786 | cma_cancel_route(id_priv); | |
787 | break; | |
788 | case CMA_LISTEN: | |
789 | if (cma_any_addr(&id_priv->id.route.addr.src_addr) && | |
790 | !id_priv->cma_dev) | |
791 | cma_cancel_listens(id_priv); | |
792 | break; | |
793 | default: | |
794 | break; | |
795 | } | |
796 | } | |
797 | ||
798 | static void cma_release_port(struct rdma_id_private *id_priv) | |
799 | { | |
800 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
801 | ||
802 | if (!bind_list) | |
803 | return; | |
804 | ||
805 | mutex_lock(&lock); | |
806 | hlist_del(&id_priv->node); | |
807 | if (hlist_empty(&bind_list->owners)) { | |
808 | idr_remove(bind_list->ps, bind_list->port); | |
809 | kfree(bind_list); | |
810 | } | |
811 | mutex_unlock(&lock); | |
812 | } | |
813 | ||
c8f6a362 SH |
814 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
815 | { | |
816 | struct cma_multicast *mc; | |
817 | ||
818 | while (!list_empty(&id_priv->mc_list)) { | |
819 | mc = container_of(id_priv->mc_list.next, | |
820 | struct cma_multicast, list); | |
821 | list_del(&mc->list); | |
822 | ib_sa_free_multicast(mc->multicast.ib); | |
823 | kfree(mc); | |
824 | } | |
825 | } | |
826 | ||
e51060f0 SH |
827 | void rdma_destroy_id(struct rdma_cm_id *id) |
828 | { | |
829 | struct rdma_id_private *id_priv; | |
830 | enum cma_state state; | |
831 | ||
832 | id_priv = container_of(id, struct rdma_id_private, id); | |
833 | state = cma_exch(id_priv, CMA_DESTROYING); | |
834 | cma_cancel_operation(id_priv, state); | |
835 | ||
61a73c70 | 836 | mutex_lock(&lock); |
e51060f0 | 837 | if (id_priv->cma_dev) { |
61a73c70 | 838 | mutex_unlock(&lock); |
07ebafba TT |
839 | switch (rdma_node_get_transport(id->device->node_type)) { |
840 | case RDMA_TRANSPORT_IB: | |
3cd96564 | 841 | if (id_priv->cm_id.ib && !IS_ERR(id_priv->cm_id.ib)) |
e51060f0 SH |
842 | ib_destroy_cm_id(id_priv->cm_id.ib); |
843 | break; | |
07ebafba TT |
844 | case RDMA_TRANSPORT_IWARP: |
845 | if (id_priv->cm_id.iw && !IS_ERR(id_priv->cm_id.iw)) | |
846 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
847 | break; | |
e51060f0 SH |
848 | default: |
849 | break; | |
850 | } | |
c8f6a362 | 851 | cma_leave_mc_groups(id_priv); |
3cd96564 | 852 | mutex_lock(&lock); |
e51060f0 | 853 | cma_detach_from_dev(id_priv); |
e51060f0 | 854 | } |
61a73c70 | 855 | mutex_unlock(&lock); |
e51060f0 SH |
856 | |
857 | cma_release_port(id_priv); | |
858 | cma_deref_id(id_priv); | |
859 | wait_for_completion(&id_priv->comp); | |
860 | ||
d02d1f53 SH |
861 | if (id_priv->internal_id) |
862 | cma_deref_id(id_priv->id.context); | |
863 | ||
e51060f0 SH |
864 | kfree(id_priv->id.route.path_rec); |
865 | kfree(id_priv); | |
866 | } | |
867 | EXPORT_SYMBOL(rdma_destroy_id); | |
868 | ||
869 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
870 | { | |
871 | int ret; | |
872 | ||
5851bb89 | 873 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
874 | if (ret) |
875 | goto reject; | |
876 | ||
5851bb89 | 877 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
878 | if (ret) |
879 | goto reject; | |
880 | ||
881 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
882 | if (ret) | |
883 | goto reject; | |
884 | ||
885 | return 0; | |
886 | reject: | |
c5483388 | 887 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
888 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
889 | NULL, 0, NULL, 0); | |
890 | return ret; | |
891 | } | |
892 | ||
893 | static int cma_verify_rep(struct rdma_id_private *id_priv, void *data) | |
894 | { | |
895 | if (id_priv->id.ps == RDMA_PS_SDP && | |
896 | sdp_get_majv(((struct sdp_hah *) data)->sdp_version) != | |
897 | SDP_MAJ_VERSION) | |
898 | return -EINVAL; | |
899 | ||
900 | return 0; | |
901 | } | |
902 | ||
a1b1b61f SH |
903 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
904 | struct ib_cm_rep_event_param *rep_data, | |
905 | void *private_data) | |
906 | { | |
907 | event->param.conn.private_data = private_data; | |
908 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
909 | event->param.conn.responder_resources = rep_data->responder_resources; | |
910 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
911 | event->param.conn.flow_control = rep_data->flow_control; | |
912 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
913 | event->param.conn.srq = rep_data->srq; | |
914 | event->param.conn.qp_num = rep_data->remote_qpn; | |
915 | } | |
916 | ||
e51060f0 SH |
917 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
918 | { | |
919 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
920 | struct rdma_cm_event event; |
921 | int ret = 0; | |
e51060f0 | 922 | |
38ca83a5 AV |
923 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
924 | cma_disable_callback(id_priv, CMA_CONNECT)) || | |
925 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && | |
926 | cma_disable_callback(id_priv, CMA_DISCONNECT))) | |
8aa08602 | 927 | return 0; |
e51060f0 | 928 | |
a1b1b61f | 929 | memset(&event, 0, sizeof event); |
e51060f0 SH |
930 | switch (ib_event->event) { |
931 | case IB_CM_REQ_ERROR: | |
932 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
933 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
934 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
935 | break; |
936 | case IB_CM_REP_RECEIVED: | |
a1b1b61f SH |
937 | event.status = cma_verify_rep(id_priv, ib_event->private_data); |
938 | if (event.status) | |
939 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
e51060f0 | 940 | else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) { |
a1b1b61f SH |
941 | event.status = cma_rep_recv(id_priv); |
942 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
943 | RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 | 944 | } else |
a1b1b61f SH |
945 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
946 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, | |
947 | ib_event->private_data); | |
e51060f0 SH |
948 | break; |
949 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
950 | case IB_CM_USER_ESTABLISHED: |
951 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
952 | break; |
953 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 954 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
955 | case IB_CM_DREQ_RECEIVED: |
956 | case IB_CM_DREP_RECEIVED: | |
957 | if (!cma_comp_exch(id_priv, CMA_CONNECT, CMA_DISCONNECT)) | |
958 | goto out; | |
a1b1b61f | 959 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
960 | break; |
961 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
962 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
963 | break; | |
e51060f0 SH |
964 | case IB_CM_MRA_RECEIVED: |
965 | /* ignore event */ | |
966 | goto out; | |
967 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 968 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
969 | event.status = ib_event->param.rej_rcvd.reason; |
970 | event.event = RDMA_CM_EVENT_REJECTED; | |
971 | event.param.conn.private_data = ib_event->private_data; | |
972 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
973 | break; |
974 | default: | |
468f2239 | 975 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
976 | ib_event->event); |
977 | goto out; | |
978 | } | |
979 | ||
a1b1b61f | 980 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
981 | if (ret) { |
982 | /* Destroy the CM ID by returning a non-zero value. */ | |
983 | id_priv->cm_id.ib = NULL; | |
984 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 985 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
986 | rdma_destroy_id(&id_priv->id); |
987 | return ret; | |
988 | } | |
989 | out: | |
de910bd9 | 990 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
991 | return ret; |
992 | } | |
993 | ||
628e5f6d SH |
994 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
995 | struct ib_cm_event *ib_event) | |
e51060f0 SH |
996 | { |
997 | struct rdma_id_private *id_priv; | |
998 | struct rdma_cm_id *id; | |
999 | struct rdma_route *rt; | |
1000 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1001 | __be16 port; |
e51060f0 | 1002 | u8 ip_ver; |
64c5e613 | 1003 | int ret; |
e51060f0 | 1004 | |
3f168d2b KK |
1005 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1006 | &ip_ver, &port, &src, &dst)) | |
1007 | goto err; | |
1008 | ||
e51060f0 SH |
1009 | id = rdma_create_id(listen_id->event_handler, listen_id->context, |
1010 | listen_id->ps); | |
1011 | if (IS_ERR(id)) | |
3f168d2b KK |
1012 | goto err; |
1013 | ||
1014 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1015 | ip_ver, port, src, dst); | |
e51060f0 SH |
1016 | |
1017 | rt = &id->route; | |
1018 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1019 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1020 | GFP_KERNEL); | |
e51060f0 | 1021 | if (!rt->path_rec) |
3f168d2b | 1022 | goto destroy_id; |
e51060f0 | 1023 | |
e51060f0 SH |
1024 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1025 | if (rt->num_paths == 2) | |
1026 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1027 | ||
e51060f0 | 1028 | ib_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); |
64c5e613 OG |
1029 | ret = rdma_translate_ip(&id->route.addr.src_addr, |
1030 | &id->route.addr.dev_addr); | |
1031 | if (ret) | |
1032 | goto destroy_id; | |
e51060f0 SH |
1033 | |
1034 | id_priv = container_of(id, struct rdma_id_private, id); | |
1035 | id_priv->state = CMA_CONNECT; | |
1036 | return id_priv; | |
3f168d2b KK |
1037 | |
1038 | destroy_id: | |
e51060f0 | 1039 | rdma_destroy_id(id); |
3f168d2b | 1040 | err: |
e51060f0 SH |
1041 | return NULL; |
1042 | } | |
1043 | ||
628e5f6d SH |
1044 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
1045 | struct ib_cm_event *ib_event) | |
1046 | { | |
1047 | struct rdma_id_private *id_priv; | |
1048 | struct rdma_cm_id *id; | |
1049 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1050 | __be16 port; |
628e5f6d SH |
1051 | u8 ip_ver; |
1052 | int ret; | |
1053 | ||
1054 | id = rdma_create_id(listen_id->event_handler, listen_id->context, | |
1055 | listen_id->ps); | |
1056 | if (IS_ERR(id)) | |
1057 | return NULL; | |
1058 | ||
1059 | ||
1060 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, | |
1061 | &ip_ver, &port, &src, &dst)) | |
1062 | goto err; | |
1063 | ||
1064 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1065 | ip_ver, port, src, dst); | |
1066 | ||
1067 | ret = rdma_translate_ip(&id->route.addr.src_addr, | |
1068 | &id->route.addr.dev_addr); | |
1069 | if (ret) | |
1070 | goto err; | |
1071 | ||
1072 | id_priv = container_of(id, struct rdma_id_private, id); | |
1073 | id_priv->state = CMA_CONNECT; | |
1074 | return id_priv; | |
1075 | err: | |
1076 | rdma_destroy_id(id); | |
1077 | return NULL; | |
1078 | } | |
1079 | ||
a1b1b61f SH |
1080 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1081 | struct ib_cm_req_event_param *req_data, | |
1082 | void *private_data, int offset) | |
1083 | { | |
1084 | event->param.conn.private_data = private_data + offset; | |
1085 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1086 | event->param.conn.responder_resources = req_data->responder_resources; | |
1087 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1088 | event->param.conn.flow_control = req_data->flow_control; | |
1089 | event->param.conn.retry_count = req_data->retry_count; | |
1090 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1091 | event->param.conn.srq = req_data->srq; | |
1092 | event->param.conn.qp_num = req_data->remote_qpn; | |
1093 | } | |
1094 | ||
e51060f0 SH |
1095 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1096 | { | |
1097 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1098 | struct rdma_cm_event event; |
e51060f0 SH |
1099 | int offset, ret; |
1100 | ||
1101 | listen_id = cm_id->context; | |
de910bd9 | 1102 | if (cma_disable_callback(listen_id, CMA_LISTEN)) |
8aa08602 | 1103 | return -ECONNABORTED; |
e51060f0 | 1104 | |
628e5f6d SH |
1105 | memset(&event, 0, sizeof event); |
1106 | offset = cma_user_data_offset(listen_id->id.ps); | |
1107 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
c8f6a362 | 1108 | if (cma_is_ud_ps(listen_id->id.ps)) { |
628e5f6d SH |
1109 | conn_id = cma_new_udp_id(&listen_id->id, ib_event); |
1110 | event.param.ud.private_data = ib_event->private_data + offset; | |
1111 | event.param.ud.private_data_len = | |
1112 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1113 | } else { | |
1114 | conn_id = cma_new_conn_id(&listen_id->id, ib_event); | |
1115 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, | |
1116 | ib_event->private_data, offset); | |
1117 | } | |
e51060f0 SH |
1118 | if (!conn_id) { |
1119 | ret = -ENOMEM; | |
1120 | goto out; | |
1121 | } | |
1122 | ||
de910bd9 | 1123 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
61a73c70 | 1124 | mutex_lock(&lock); |
07ebafba | 1125 | ret = cma_acquire_dev(conn_id); |
61a73c70 | 1126 | mutex_unlock(&lock); |
a1a733f6 KK |
1127 | if (ret) |
1128 | goto release_conn_id; | |
e51060f0 SH |
1129 | |
1130 | conn_id->cm_id.ib = cm_id; | |
1131 | cm_id->context = conn_id; | |
1132 | cm_id->cm_handler = cma_ib_handler; | |
1133 | ||
a1b1b61f | 1134 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
45d9478d | 1135 | if (!ret) { |
ead595ae SH |
1136 | /* |
1137 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1138 | * while we're accessing the cm_id. | |
1139 | */ | |
1140 | mutex_lock(&lock); | |
1141 | if (cma_comp(conn_id, CMA_CONNECT) && | |
1142 | !cma_is_ud_ps(conn_id->id.ps)) | |
1143 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); | |
1144 | mutex_unlock(&lock); | |
de910bd9 | 1145 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 | 1146 | goto out; |
45d9478d | 1147 | } |
a1a733f6 KK |
1148 | |
1149 | /* Destroy the CM ID by returning a non-zero value. */ | |
1150 | conn_id->cm_id.ib = NULL; | |
1151 | ||
1152 | release_conn_id: | |
1153 | cma_exch(conn_id, CMA_DESTROYING); | |
de910bd9 | 1154 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 KK |
1155 | rdma_destroy_id(&conn_id->id); |
1156 | ||
e51060f0 | 1157 | out: |
de910bd9 | 1158 | mutex_unlock(&listen_id->handler_mutex); |
e51060f0 SH |
1159 | return ret; |
1160 | } | |
1161 | ||
1162 | static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr) | |
1163 | { | |
628e5f6d | 1164 | return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 SH |
1165 | } |
1166 | ||
1167 | static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr, | |
1168 | struct ib_cm_compare_data *compare) | |
1169 | { | |
1170 | struct cma_hdr *cma_data, *cma_mask; | |
1171 | struct sdp_hh *sdp_data, *sdp_mask; | |
1b90c137 | 1172 | __be32 ip4_addr; |
e51060f0 SH |
1173 | struct in6_addr ip6_addr; |
1174 | ||
1175 | memset(compare, 0, sizeof *compare); | |
1176 | cma_data = (void *) compare->data; | |
1177 | cma_mask = (void *) compare->mask; | |
1178 | sdp_data = (void *) compare->data; | |
1179 | sdp_mask = (void *) compare->mask; | |
1180 | ||
1181 | switch (addr->sa_family) { | |
1182 | case AF_INET: | |
1183 | ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | |
1184 | if (ps == RDMA_PS_SDP) { | |
1185 | sdp_set_ip_ver(sdp_data, 4); | |
1186 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1187 | sdp_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1188 | sdp_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1189 | } else { |
1190 | cma_set_ip_ver(cma_data, 4); | |
1191 | cma_set_ip_ver(cma_mask, 0xF); | |
1192 | cma_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1193 | cma_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1194 | } |
1195 | break; | |
1196 | case AF_INET6: | |
1197 | ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr; | |
1198 | if (ps == RDMA_PS_SDP) { | |
1199 | sdp_set_ip_ver(sdp_data, 6); | |
1200 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1201 | sdp_data->dst_addr.ip6 = ip6_addr; | |
1202 | memset(&sdp_mask->dst_addr.ip6, 0xFF, | |
1203 | sizeof sdp_mask->dst_addr.ip6); | |
1204 | } else { | |
1205 | cma_set_ip_ver(cma_data, 6); | |
1206 | cma_set_ip_ver(cma_mask, 0xF); | |
1207 | cma_data->dst_addr.ip6 = ip6_addr; | |
1208 | memset(&cma_mask->dst_addr.ip6, 0xFF, | |
1209 | sizeof cma_mask->dst_addr.ip6); | |
1210 | } | |
1211 | break; | |
1212 | default: | |
1213 | break; | |
1214 | } | |
1215 | } | |
1216 | ||
07ebafba TT |
1217 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1218 | { | |
1219 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1220 | struct rdma_cm_event event; |
07ebafba TT |
1221 | struct sockaddr_in *sin; |
1222 | int ret = 0; | |
1223 | ||
de910bd9 | 1224 | if (cma_disable_callback(id_priv, CMA_CONNECT)) |
be65f086 | 1225 | return 0; |
07ebafba | 1226 | |
be65f086 | 1227 | memset(&event, 0, sizeof event); |
07ebafba TT |
1228 | switch (iw_event->event) { |
1229 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1230 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1231 | break; |
1232 | case IW_CM_EVENT_CONNECT_REPLY: | |
1233 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1234 | *sin = iw_event->local_addr; | |
1235 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.dst_addr; | |
1236 | *sin = iw_event->remote_addr; | |
881a045f SW |
1237 | switch (iw_event->status) { |
1238 | case 0: | |
a1b1b61f | 1239 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
881a045f SW |
1240 | break; |
1241 | case -ECONNRESET: | |
1242 | case -ECONNREFUSED: | |
1243 | event.event = RDMA_CM_EVENT_REJECTED; | |
1244 | break; | |
1245 | case -ETIMEDOUT: | |
1246 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1247 | break; | |
1248 | default: | |
1249 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1250 | break; | |
1251 | } | |
07ebafba TT |
1252 | break; |
1253 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1254 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
07ebafba TT |
1255 | break; |
1256 | default: | |
1257 | BUG_ON(1); | |
1258 | } | |
1259 | ||
a1b1b61f SH |
1260 | event.status = iw_event->status; |
1261 | event.param.conn.private_data = iw_event->private_data; | |
1262 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1263 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1264 | if (ret) { |
1265 | /* Destroy the CM ID by returning a non-zero value. */ | |
1266 | id_priv->cm_id.iw = NULL; | |
1267 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 1268 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1269 | rdma_destroy_id(&id_priv->id); |
1270 | return ret; | |
1271 | } | |
1272 | ||
de910bd9 | 1273 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1274 | return ret; |
1275 | } | |
1276 | ||
1277 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1278 | struct iw_cm_event *iw_event) | |
1279 | { | |
1280 | struct rdma_cm_id *new_cm_id; | |
1281 | struct rdma_id_private *listen_id, *conn_id; | |
1282 | struct sockaddr_in *sin; | |
1283 | struct net_device *dev = NULL; | |
a1b1b61f | 1284 | struct rdma_cm_event event; |
07ebafba | 1285 | int ret; |
8d8293cf | 1286 | struct ib_device_attr attr; |
07ebafba TT |
1287 | |
1288 | listen_id = cm_id->context; | |
de910bd9 | 1289 | if (cma_disable_callback(listen_id, CMA_LISTEN)) |
8aa08602 | 1290 | return -ECONNABORTED; |
07ebafba TT |
1291 | |
1292 | /* Create a new RDMA id for the new IW CM ID */ | |
1293 | new_cm_id = rdma_create_id(listen_id->id.event_handler, | |
1294 | listen_id->id.context, | |
1295 | RDMA_PS_TCP); | |
10f32065 | 1296 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1297 | ret = -ENOMEM; |
1298 | goto out; | |
1299 | } | |
1300 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1301 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
07ebafba TT |
1302 | conn_id->state = CMA_CONNECT; |
1303 | ||
1ab35276 | 1304 | dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr); |
07ebafba TT |
1305 | if (!dev) { |
1306 | ret = -EADDRNOTAVAIL; | |
de910bd9 | 1307 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1308 | rdma_destroy_id(new_cm_id); |
1309 | goto out; | |
1310 | } | |
1311 | ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL); | |
1312 | if (ret) { | |
de910bd9 | 1313 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1314 | rdma_destroy_id(new_cm_id); |
1315 | goto out; | |
1316 | } | |
1317 | ||
61a73c70 | 1318 | mutex_lock(&lock); |
07ebafba | 1319 | ret = cma_acquire_dev(conn_id); |
61a73c70 | 1320 | mutex_unlock(&lock); |
07ebafba | 1321 | if (ret) { |
de910bd9 | 1322 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1323 | rdma_destroy_id(new_cm_id); |
1324 | goto out; | |
1325 | } | |
1326 | ||
1327 | conn_id->cm_id.iw = cm_id; | |
1328 | cm_id->context = conn_id; | |
1329 | cm_id->cm_handler = cma_iw_handler; | |
1330 | ||
1331 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.src_addr; | |
1332 | *sin = iw_event->local_addr; | |
1333 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr; | |
1334 | *sin = iw_event->remote_addr; | |
1335 | ||
8d8293cf SW |
1336 | ret = ib_query_device(conn_id->id.device, &attr); |
1337 | if (ret) { | |
de910bd9 | 1338 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1339 | rdma_destroy_id(new_cm_id); |
1340 | goto out; | |
1341 | } | |
1342 | ||
a1b1b61f SH |
1343 | memset(&event, 0, sizeof event); |
1344 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1345 | event.param.conn.private_data = iw_event->private_data; | |
1346 | event.param.conn.private_data_len = iw_event->private_data_len; | |
8d8293cf SW |
1347 | event.param.conn.initiator_depth = attr.max_qp_init_rd_atom; |
1348 | event.param.conn.responder_resources = attr.max_qp_rd_atom; | |
a1b1b61f | 1349 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1350 | if (ret) { |
1351 | /* User wants to destroy the CM ID */ | |
1352 | conn_id->cm_id.iw = NULL; | |
1353 | cma_exch(conn_id, CMA_DESTROYING); | |
de910bd9 | 1354 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba | 1355 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1356 | goto out; |
07ebafba TT |
1357 | } |
1358 | ||
de910bd9 OG |
1359 | mutex_unlock(&conn_id->handler_mutex); |
1360 | ||
07ebafba TT |
1361 | out: |
1362 | if (dev) | |
1363 | dev_put(dev); | |
de910bd9 | 1364 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1365 | return ret; |
1366 | } | |
1367 | ||
e51060f0 SH |
1368 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1369 | { | |
1370 | struct ib_cm_compare_data compare_data; | |
1371 | struct sockaddr *addr; | |
1372 | __be64 svc_id; | |
1373 | int ret; | |
1374 | ||
1375 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, cma_req_handler, | |
1376 | id_priv); | |
1377 | if (IS_ERR(id_priv->cm_id.ib)) | |
1378 | return PTR_ERR(id_priv->cm_id.ib); | |
1379 | ||
1380 | addr = &id_priv->id.route.addr.src_addr; | |
1381 | svc_id = cma_get_service_id(id_priv->id.ps, addr); | |
1382 | if (cma_any_addr(addr)) | |
1383 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL); | |
1384 | else { | |
1385 | cma_set_compare_data(id_priv->id.ps, addr, &compare_data); | |
1386 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, &compare_data); | |
1387 | } | |
1388 | ||
1389 | if (ret) { | |
1390 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
1391 | id_priv->cm_id.ib = NULL; | |
1392 | } | |
1393 | ||
1394 | return ret; | |
1395 | } | |
1396 | ||
07ebafba TT |
1397 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1398 | { | |
1399 | int ret; | |
1400 | struct sockaddr_in *sin; | |
1401 | ||
1402 | id_priv->cm_id.iw = iw_create_cm_id(id_priv->id.device, | |
1403 | iw_conn_req_handler, | |
1404 | id_priv); | |
1405 | if (IS_ERR(id_priv->cm_id.iw)) | |
1406 | return PTR_ERR(id_priv->cm_id.iw); | |
1407 | ||
1408 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1409 | id_priv->cm_id.iw->local_addr = *sin; | |
1410 | ||
1411 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
1412 | ||
1413 | if (ret) { | |
1414 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
1415 | id_priv->cm_id.iw = NULL; | |
1416 | } | |
1417 | ||
1418 | return ret; | |
1419 | } | |
1420 | ||
e51060f0 SH |
1421 | static int cma_listen_handler(struct rdma_cm_id *id, |
1422 | struct rdma_cm_event *event) | |
1423 | { | |
1424 | struct rdma_id_private *id_priv = id->context; | |
1425 | ||
1426 | id->context = id_priv->id.context; | |
1427 | id->event_handler = id_priv->id.event_handler; | |
1428 | return id_priv->id.event_handler(id, event); | |
1429 | } | |
1430 | ||
1431 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
1432 | struct cma_device *cma_dev) | |
1433 | { | |
1434 | struct rdma_id_private *dev_id_priv; | |
1435 | struct rdma_cm_id *id; | |
1436 | int ret; | |
1437 | ||
1438 | id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps); | |
1439 | if (IS_ERR(id)) | |
1440 | return; | |
1441 | ||
1442 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
1443 | ||
1444 | dev_id_priv->state = CMA_ADDR_BOUND; | |
1445 | memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr, | |
1446 | ip_addr_size(&id_priv->id.route.addr.src_addr)); | |
1447 | ||
1448 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
1449 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
1450 | atomic_inc(&id_priv->refcount); |
1451 | dev_id_priv->internal_id = 1; | |
e51060f0 SH |
1452 | |
1453 | ret = rdma_listen(id, id_priv->backlog); | |
1454 | if (ret) | |
d02d1f53 | 1455 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 1456 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
1457 | } |
1458 | ||
1459 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
1460 | { | |
1461 | struct cma_device *cma_dev; | |
1462 | ||
1463 | mutex_lock(&lock); | |
1464 | list_add_tail(&id_priv->list, &listen_any_list); | |
1465 | list_for_each_entry(cma_dev, &dev_list, list) | |
1466 | cma_listen_on_dev(id_priv, cma_dev); | |
1467 | mutex_unlock(&lock); | |
1468 | } | |
1469 | ||
1470 | static int cma_bind_any(struct rdma_cm_id *id, sa_family_t af) | |
1471 | { | |
1472 | struct sockaddr_in addr_in; | |
1473 | ||
1474 | memset(&addr_in, 0, sizeof addr_in); | |
1475 | addr_in.sin_family = af; | |
1476 | return rdma_bind_addr(id, (struct sockaddr *) &addr_in); | |
1477 | } | |
1478 | ||
1479 | int rdma_listen(struct rdma_cm_id *id, int backlog) | |
1480 | { | |
1481 | struct rdma_id_private *id_priv; | |
1482 | int ret; | |
1483 | ||
1484 | id_priv = container_of(id, struct rdma_id_private, id); | |
1485 | if (id_priv->state == CMA_IDLE) { | |
1486 | ret = cma_bind_any(id, AF_INET); | |
1487 | if (ret) | |
1488 | return ret; | |
1489 | } | |
1490 | ||
1491 | if (!cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_LISTEN)) | |
1492 | return -EINVAL; | |
1493 | ||
1494 | id_priv->backlog = backlog; | |
1495 | if (id->device) { | |
07ebafba TT |
1496 | switch (rdma_node_get_transport(id->device->node_type)) { |
1497 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
1498 | ret = cma_ib_listen(id_priv); |
1499 | if (ret) | |
1500 | goto err; | |
1501 | break; | |
07ebafba TT |
1502 | case RDMA_TRANSPORT_IWARP: |
1503 | ret = cma_iw_listen(id_priv, backlog); | |
1504 | if (ret) | |
1505 | goto err; | |
1506 | break; | |
e51060f0 SH |
1507 | default: |
1508 | ret = -ENOSYS; | |
1509 | goto err; | |
1510 | } | |
1511 | } else | |
1512 | cma_listen_on_all(id_priv); | |
1513 | ||
1514 | return 0; | |
1515 | err: | |
1516 | id_priv->backlog = 0; | |
1517 | cma_comp_exch(id_priv, CMA_LISTEN, CMA_ADDR_BOUND); | |
1518 | return ret; | |
1519 | } | |
1520 | EXPORT_SYMBOL(rdma_listen); | |
1521 | ||
a81c994d SH |
1522 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
1523 | { | |
1524 | struct rdma_id_private *id_priv; | |
1525 | ||
1526 | id_priv = container_of(id, struct rdma_id_private, id); | |
1527 | id_priv->tos = (u8) tos; | |
1528 | } | |
1529 | EXPORT_SYMBOL(rdma_set_service_type); | |
1530 | ||
e51060f0 SH |
1531 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
1532 | void *context) | |
1533 | { | |
1534 | struct cma_work *work = context; | |
1535 | struct rdma_route *route; | |
1536 | ||
1537 | route = &work->id->id.route; | |
1538 | ||
1539 | if (!status) { | |
1540 | route->num_paths = 1; | |
1541 | *route->path_rec = *path_rec; | |
1542 | } else { | |
1543 | work->old_state = CMA_ROUTE_QUERY; | |
1544 | work->new_state = CMA_ADDR_RESOLVED; | |
1545 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; | |
8f0472d3 | 1546 | work->event.status = status; |
e51060f0 SH |
1547 | } |
1548 | ||
1549 | queue_work(cma_wq, &work->work); | |
1550 | } | |
1551 | ||
1552 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
1553 | struct cma_work *work) | |
1554 | { | |
a81c994d | 1555 | struct rdma_addr *addr = &id_priv->id.route.addr; |
e51060f0 | 1556 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
1557 | ib_sa_comp_mask comp_mask; |
1558 | struct sockaddr_in6 *sin6; | |
e51060f0 SH |
1559 | |
1560 | memset(&path_rec, 0, sizeof path_rec); | |
a81c994d SH |
1561 | ib_addr_get_sgid(&addr->dev_addr, &path_rec.sgid); |
1562 | ib_addr_get_dgid(&addr->dev_addr, &path_rec.dgid); | |
1563 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr)); | |
e51060f0 | 1564 | path_rec.numb_path = 1; |
962063e6 | 1565 | path_rec.reversible = 1; |
a81c994d SH |
1566 | path_rec.service_id = cma_get_service_id(id_priv->id.ps, &addr->dst_addr); |
1567 | ||
1568 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
1569 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
1570 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
1571 | ||
1572 | if (addr->src_addr.sa_family == AF_INET) { | |
1573 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); | |
1574 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
1575 | } else { | |
1576 | sin6 = (struct sockaddr_in6 *) &addr->src_addr; | |
1577 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); | |
1578 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
1579 | } | |
e51060f0 | 1580 | |
c1a0b23b | 1581 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
1582 | id_priv->id.port_num, &path_rec, |
1583 | comp_mask, timeout_ms, | |
1584 | GFP_KERNEL, cma_query_handler, | |
1585 | work, &id_priv->query); | |
e51060f0 SH |
1586 | |
1587 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
1588 | } | |
1589 | ||
c4028958 | 1590 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 1591 | { |
c4028958 | 1592 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
1593 | struct rdma_id_private *id_priv = work->id; |
1594 | int destroy = 0; | |
1595 | ||
de910bd9 | 1596 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
1597 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
1598 | goto out; | |
1599 | ||
1600 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
1601 | cma_exch(id_priv, CMA_DESTROYING); | |
1602 | destroy = 1; | |
1603 | } | |
1604 | out: | |
de910bd9 | 1605 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1606 | cma_deref_id(id_priv); |
1607 | if (destroy) | |
1608 | rdma_destroy_id(&id_priv->id); | |
1609 | kfree(work); | |
1610 | } | |
1611 | ||
dd5bdff8 OG |
1612 | static void cma_ndev_work_handler(struct work_struct *_work) |
1613 | { | |
1614 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
1615 | struct rdma_id_private *id_priv = work->id; | |
1616 | int destroy = 0; | |
1617 | ||
1618 | mutex_lock(&id_priv->handler_mutex); | |
1619 | if (id_priv->state == CMA_DESTROYING || | |
1620 | id_priv->state == CMA_DEVICE_REMOVAL) | |
1621 | goto out; | |
1622 | ||
1623 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
1624 | cma_exch(id_priv, CMA_DESTROYING); | |
1625 | destroy = 1; | |
1626 | } | |
1627 | ||
1628 | out: | |
1629 | mutex_unlock(&id_priv->handler_mutex); | |
1630 | cma_deref_id(id_priv); | |
1631 | if (destroy) | |
1632 | rdma_destroy_id(&id_priv->id); | |
1633 | kfree(work); | |
1634 | } | |
1635 | ||
e51060f0 SH |
1636 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
1637 | { | |
1638 | struct rdma_route *route = &id_priv->id.route; | |
1639 | struct cma_work *work; | |
1640 | int ret; | |
1641 | ||
1642 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1643 | if (!work) | |
1644 | return -ENOMEM; | |
1645 | ||
1646 | work->id = id_priv; | |
c4028958 | 1647 | INIT_WORK(&work->work, cma_work_handler); |
e51060f0 SH |
1648 | work->old_state = CMA_ROUTE_QUERY; |
1649 | work->new_state = CMA_ROUTE_RESOLVED; | |
1650 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
1651 | ||
1652 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1653 | if (!route->path_rec) { | |
1654 | ret = -ENOMEM; | |
1655 | goto err1; | |
1656 | } | |
1657 | ||
1658 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
1659 | if (ret) | |
1660 | goto err2; | |
1661 | ||
1662 | return 0; | |
1663 | err2: | |
1664 | kfree(route->path_rec); | |
1665 | route->path_rec = NULL; | |
1666 | err1: | |
1667 | kfree(work); | |
1668 | return ret; | |
1669 | } | |
1670 | ||
1671 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
1672 | struct ib_sa_path_rec *path_rec, int num_paths) | |
1673 | { | |
1674 | struct rdma_id_private *id_priv; | |
1675 | int ret; | |
1676 | ||
1677 | id_priv = container_of(id, struct rdma_id_private, id); | |
1678 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ROUTE_RESOLVED)) | |
1679 | return -EINVAL; | |
1680 | ||
1681 | id->route.path_rec = kmalloc(sizeof *path_rec * num_paths, GFP_KERNEL); | |
1682 | if (!id->route.path_rec) { | |
1683 | ret = -ENOMEM; | |
1684 | goto err; | |
1685 | } | |
1686 | ||
1687 | memcpy(id->route.path_rec, path_rec, sizeof *path_rec * num_paths); | |
1688 | return 0; | |
1689 | err: | |
1690 | cma_comp_exch(id_priv, CMA_ROUTE_RESOLVED, CMA_ADDR_RESOLVED); | |
1691 | return ret; | |
1692 | } | |
1693 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
1694 | ||
07ebafba TT |
1695 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
1696 | { | |
1697 | struct cma_work *work; | |
1698 | ||
1699 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1700 | if (!work) | |
1701 | return -ENOMEM; | |
1702 | ||
1703 | work->id = id_priv; | |
c4028958 | 1704 | INIT_WORK(&work->work, cma_work_handler); |
07ebafba TT |
1705 | work->old_state = CMA_ROUTE_QUERY; |
1706 | work->new_state = CMA_ROUTE_RESOLVED; | |
1707 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
1708 | queue_work(cma_wq, &work->work); | |
1709 | return 0; | |
1710 | } | |
1711 | ||
e51060f0 SH |
1712 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
1713 | { | |
1714 | struct rdma_id_private *id_priv; | |
1715 | int ret; | |
1716 | ||
1717 | id_priv = container_of(id, struct rdma_id_private, id); | |
1718 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ROUTE_QUERY)) | |
1719 | return -EINVAL; | |
1720 | ||
1721 | atomic_inc(&id_priv->refcount); | |
07ebafba TT |
1722 | switch (rdma_node_get_transport(id->device->node_type)) { |
1723 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
1724 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
1725 | break; | |
07ebafba TT |
1726 | case RDMA_TRANSPORT_IWARP: |
1727 | ret = cma_resolve_iw_route(id_priv, timeout_ms); | |
1728 | break; | |
e51060f0 SH |
1729 | default: |
1730 | ret = -ENOSYS; | |
1731 | break; | |
1732 | } | |
1733 | if (ret) | |
1734 | goto err; | |
1735 | ||
1736 | return 0; | |
1737 | err: | |
1738 | cma_comp_exch(id_priv, CMA_ROUTE_QUERY, CMA_ADDR_RESOLVED); | |
1739 | cma_deref_id(id_priv); | |
1740 | return ret; | |
1741 | } | |
1742 | EXPORT_SYMBOL(rdma_resolve_route); | |
1743 | ||
1744 | static int cma_bind_loopback(struct rdma_id_private *id_priv) | |
1745 | { | |
1746 | struct cma_device *cma_dev; | |
1747 | struct ib_port_attr port_attr; | |
f0ee3404 | 1748 | union ib_gid gid; |
e51060f0 SH |
1749 | u16 pkey; |
1750 | int ret; | |
1751 | u8 p; | |
1752 | ||
1753 | mutex_lock(&lock); | |
e82153b5 KK |
1754 | if (list_empty(&dev_list)) { |
1755 | ret = -ENODEV; | |
1756 | goto out; | |
1757 | } | |
e51060f0 SH |
1758 | list_for_each_entry(cma_dev, &dev_list, list) |
1759 | for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) | |
e82153b5 | 1760 | if (!ib_query_port(cma_dev->device, p, &port_attr) && |
e51060f0 SH |
1761 | port_attr.state == IB_PORT_ACTIVE) |
1762 | goto port_found; | |
1763 | ||
e82153b5 KK |
1764 | p = 1; |
1765 | cma_dev = list_entry(dev_list.next, struct cma_device, list); | |
e51060f0 SH |
1766 | |
1767 | port_found: | |
f0ee3404 | 1768 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
1769 | if (ret) |
1770 | goto out; | |
1771 | ||
1772 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
1773 | if (ret) | |
1774 | goto out; | |
1775 | ||
f0ee3404 | 1776 | ib_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
e51060f0 SH |
1777 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
1778 | id_priv->id.port_num = p; | |
1779 | cma_attach_to_dev(id_priv, cma_dev); | |
1780 | out: | |
1781 | mutex_unlock(&lock); | |
1782 | return ret; | |
1783 | } | |
1784 | ||
1785 | static void addr_handler(int status, struct sockaddr *src_addr, | |
1786 | struct rdma_dev_addr *dev_addr, void *context) | |
1787 | { | |
1788 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 1789 | struct rdma_cm_event event; |
e51060f0 | 1790 | |
a1b1b61f | 1791 | memset(&event, 0, sizeof event); |
de910bd9 | 1792 | mutex_lock(&id_priv->handler_mutex); |
61a73c70 SH |
1793 | |
1794 | /* | |
1795 | * Grab mutex to block rdma_destroy_id() from removing the device while | |
1796 | * we're trying to acquire it. | |
1797 | */ | |
1798 | mutex_lock(&lock); | |
1799 | if (!cma_comp_exch(id_priv, CMA_ADDR_QUERY, CMA_ADDR_RESOLVED)) { | |
1800 | mutex_unlock(&lock); | |
1801 | goto out; | |
1802 | } | |
1803 | ||
1804 | if (!status && !id_priv->cma_dev) | |
e51060f0 | 1805 | status = cma_acquire_dev(id_priv); |
61a73c70 | 1806 | mutex_unlock(&lock); |
e51060f0 SH |
1807 | |
1808 | if (status) { | |
61a73c70 | 1809 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ADDR_BOUND)) |
e51060f0 | 1810 | goto out; |
a1b1b61f SH |
1811 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
1812 | event.status = status; | |
e51060f0 | 1813 | } else { |
e51060f0 SH |
1814 | memcpy(&id_priv->id.route.addr.src_addr, src_addr, |
1815 | ip_addr_size(src_addr)); | |
a1b1b61f | 1816 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 SH |
1817 | } |
1818 | ||
a1b1b61f | 1819 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
e51060f0 | 1820 | cma_exch(id_priv, CMA_DESTROYING); |
de910bd9 | 1821 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1822 | cma_deref_id(id_priv); |
1823 | rdma_destroy_id(&id_priv->id); | |
1824 | return; | |
1825 | } | |
1826 | out: | |
de910bd9 | 1827 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1828 | cma_deref_id(id_priv); |
1829 | } | |
1830 | ||
1831 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
1832 | { | |
1833 | struct cma_work *work; | |
1834 | struct sockaddr_in *src_in, *dst_in; | |
f0ee3404 | 1835 | union ib_gid gid; |
e51060f0 SH |
1836 | int ret; |
1837 | ||
1838 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1839 | if (!work) | |
1840 | return -ENOMEM; | |
1841 | ||
1842 | if (!id_priv->cma_dev) { | |
1843 | ret = cma_bind_loopback(id_priv); | |
1844 | if (ret) | |
1845 | goto err; | |
1846 | } | |
1847 | ||
f0ee3404 MT |
1848 | ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
1849 | ib_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
1850 | |
1851 | if (cma_zero_addr(&id_priv->id.route.addr.src_addr)) { | |
1852 | src_in = (struct sockaddr_in *)&id_priv->id.route.addr.src_addr; | |
1853 | dst_in = (struct sockaddr_in *)&id_priv->id.route.addr.dst_addr; | |
1854 | src_in->sin_family = dst_in->sin_family; | |
1855 | src_in->sin_addr.s_addr = dst_in->sin_addr.s_addr; | |
1856 | } | |
1857 | ||
1858 | work->id = id_priv; | |
c4028958 | 1859 | INIT_WORK(&work->work, cma_work_handler); |
e51060f0 SH |
1860 | work->old_state = CMA_ADDR_QUERY; |
1861 | work->new_state = CMA_ADDR_RESOLVED; | |
1862 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
1863 | queue_work(cma_wq, &work->work); | |
1864 | return 0; | |
1865 | err: | |
1866 | kfree(work); | |
1867 | return ret; | |
1868 | } | |
1869 | ||
1870 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
1871 | struct sockaddr *dst_addr) | |
1872 | { | |
1873 | if (src_addr && src_addr->sa_family) | |
1874 | return rdma_bind_addr(id, src_addr); | |
1875 | else | |
1876 | return cma_bind_any(id, dst_addr->sa_family); | |
1877 | } | |
1878 | ||
1879 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
1880 | struct sockaddr *dst_addr, int timeout_ms) | |
1881 | { | |
1882 | struct rdma_id_private *id_priv; | |
1883 | int ret; | |
1884 | ||
1885 | id_priv = container_of(id, struct rdma_id_private, id); | |
1886 | if (id_priv->state == CMA_IDLE) { | |
1887 | ret = cma_bind_addr(id, src_addr, dst_addr); | |
1888 | if (ret) | |
1889 | return ret; | |
1890 | } | |
1891 | ||
1892 | if (!cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_ADDR_QUERY)) | |
1893 | return -EINVAL; | |
1894 | ||
1895 | atomic_inc(&id_priv->refcount); | |
1896 | memcpy(&id->route.addr.dst_addr, dst_addr, ip_addr_size(dst_addr)); | |
1897 | if (cma_any_addr(dst_addr)) | |
1898 | ret = cma_resolve_loopback(id_priv); | |
1899 | else | |
7a118df3 SH |
1900 | ret = rdma_resolve_ip(&addr_client, &id->route.addr.src_addr, |
1901 | dst_addr, &id->route.addr.dev_addr, | |
e51060f0 SH |
1902 | timeout_ms, addr_handler, id_priv); |
1903 | if (ret) | |
1904 | goto err; | |
1905 | ||
1906 | return 0; | |
1907 | err: | |
1908 | cma_comp_exch(id_priv, CMA_ADDR_QUERY, CMA_ADDR_BOUND); | |
1909 | cma_deref_id(id_priv); | |
1910 | return ret; | |
1911 | } | |
1912 | EXPORT_SYMBOL(rdma_resolve_addr); | |
1913 | ||
1914 | static void cma_bind_port(struct rdma_bind_list *bind_list, | |
1915 | struct rdma_id_private *id_priv) | |
1916 | { | |
1917 | struct sockaddr_in *sin; | |
1918 | ||
1919 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1920 | sin->sin_port = htons(bind_list->port); | |
1921 | id_priv->bind_list = bind_list; | |
1922 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
1923 | } | |
1924 | ||
1925 | static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, | |
1926 | unsigned short snum) | |
1927 | { | |
1928 | struct rdma_bind_list *bind_list; | |
aedec080 | 1929 | int port, ret; |
e51060f0 | 1930 | |
cb164b8c | 1931 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
1932 | if (!bind_list) |
1933 | return -ENOMEM; | |
1934 | ||
aedec080 SH |
1935 | do { |
1936 | ret = idr_get_new_above(ps, bind_list, snum, &port); | |
1937 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); | |
1938 | ||
1939 | if (ret) | |
1940 | goto err1; | |
1941 | ||
1942 | if (port != snum) { | |
1943 | ret = -EADDRNOTAVAIL; | |
1944 | goto err2; | |
1945 | } | |
1946 | ||
1947 | bind_list->ps = ps; | |
1948 | bind_list->port = (unsigned short) port; | |
1949 | cma_bind_port(bind_list, id_priv); | |
1950 | return 0; | |
1951 | err2: | |
1952 | idr_remove(ps, port); | |
1953 | err1: | |
1954 | kfree(bind_list); | |
1955 | return ret; | |
1956 | } | |
e51060f0 | 1957 | |
aedec080 SH |
1958 | static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv) |
1959 | { | |
1960 | struct rdma_bind_list *bind_list; | |
227b60f5 | 1961 | int port, ret, low, high; |
aedec080 SH |
1962 | |
1963 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); | |
1964 | if (!bind_list) | |
1965 | return -ENOMEM; | |
1966 | ||
1967 | retry: | |
227b60f5 | 1968 | /* FIXME: add proper port randomization per like inet_csk_get_port */ |
e51060f0 | 1969 | do { |
aedec080 | 1970 | ret = idr_get_new_above(ps, bind_list, next_port, &port); |
e51060f0 SH |
1971 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); |
1972 | ||
1973 | if (ret) | |
aedec080 | 1974 | goto err1; |
e51060f0 | 1975 | |
227b60f5 SH |
1976 | inet_get_local_port_range(&low, &high); |
1977 | if (port > high) { | |
1978 | if (next_port != low) { | |
aedec080 | 1979 | idr_remove(ps, port); |
227b60f5 | 1980 | next_port = low; |
aedec080 SH |
1981 | goto retry; |
1982 | } | |
e51060f0 | 1983 | ret = -EADDRNOTAVAIL; |
aedec080 | 1984 | goto err2; |
e51060f0 SH |
1985 | } |
1986 | ||
227b60f5 SH |
1987 | if (port == high) |
1988 | next_port = low; | |
aedec080 SH |
1989 | else |
1990 | next_port = port + 1; | |
1991 | ||
e51060f0 SH |
1992 | bind_list->ps = ps; |
1993 | bind_list->port = (unsigned short) port; | |
1994 | cma_bind_port(bind_list, id_priv); | |
1995 | return 0; | |
aedec080 SH |
1996 | err2: |
1997 | idr_remove(ps, port); | |
1998 | err1: | |
e51060f0 SH |
1999 | kfree(bind_list); |
2000 | return ret; | |
2001 | } | |
2002 | ||
2003 | static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv) | |
2004 | { | |
2005 | struct rdma_id_private *cur_id; | |
2006 | struct sockaddr_in *sin, *cur_sin; | |
2007 | struct rdma_bind_list *bind_list; | |
2008 | struct hlist_node *node; | |
2009 | unsigned short snum; | |
2010 | ||
2011 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
2012 | snum = ntohs(sin->sin_port); | |
2013 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
2014 | return -EACCES; | |
2015 | ||
2016 | bind_list = idr_find(ps, snum); | |
2017 | if (!bind_list) | |
2018 | return cma_alloc_port(ps, id_priv, snum); | |
2019 | ||
2020 | /* | |
2021 | * We don't support binding to any address if anyone is bound to | |
2022 | * a specific address on the same port. | |
2023 | */ | |
2024 | if (cma_any_addr(&id_priv->id.route.addr.src_addr)) | |
2025 | return -EADDRNOTAVAIL; | |
2026 | ||
2027 | hlist_for_each_entry(cur_id, node, &bind_list->owners, node) { | |
2028 | if (cma_any_addr(&cur_id->id.route.addr.src_addr)) | |
2029 | return -EADDRNOTAVAIL; | |
3cd96564 | 2030 | |
e51060f0 SH |
2031 | cur_sin = (struct sockaddr_in *) &cur_id->id.route.addr.src_addr; |
2032 | if (sin->sin_addr.s_addr == cur_sin->sin_addr.s_addr) | |
2033 | return -EADDRINUSE; | |
2034 | } | |
2035 | ||
2036 | cma_bind_port(bind_list, id_priv); | |
2037 | return 0; | |
2038 | } | |
2039 | ||
2040 | static int cma_get_port(struct rdma_id_private *id_priv) | |
2041 | { | |
2042 | struct idr *ps; | |
2043 | int ret; | |
2044 | ||
2045 | switch (id_priv->id.ps) { | |
2046 | case RDMA_PS_SDP: | |
2047 | ps = &sdp_ps; | |
2048 | break; | |
2049 | case RDMA_PS_TCP: | |
2050 | ps = &tcp_ps; | |
2051 | break; | |
628e5f6d SH |
2052 | case RDMA_PS_UDP: |
2053 | ps = &udp_ps; | |
2054 | break; | |
c8f6a362 SH |
2055 | case RDMA_PS_IPOIB: |
2056 | ps = &ipoib_ps; | |
2057 | break; | |
e51060f0 SH |
2058 | default: |
2059 | return -EPROTONOSUPPORT; | |
2060 | } | |
2061 | ||
2062 | mutex_lock(&lock); | |
2063 | if (cma_any_port(&id_priv->id.route.addr.src_addr)) | |
aedec080 | 2064 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2065 | else |
2066 | ret = cma_use_port(ps, id_priv); | |
2067 | mutex_unlock(&lock); | |
2068 | ||
2069 | return ret; | |
2070 | } | |
2071 | ||
2072 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) | |
2073 | { | |
2074 | struct rdma_id_private *id_priv; | |
2075 | int ret; | |
2076 | ||
2077 | if (addr->sa_family != AF_INET) | |
2078 | return -EAFNOSUPPORT; | |
2079 | ||
2080 | id_priv = container_of(id, struct rdma_id_private, id); | |
2081 | if (!cma_comp_exch(id_priv, CMA_IDLE, CMA_ADDR_BOUND)) | |
2082 | return -EINVAL; | |
2083 | ||
2084 | if (!cma_any_addr(addr)) { | |
2085 | ret = rdma_translate_ip(addr, &id->route.addr.dev_addr); | |
e51060f0 | 2086 | if (ret) |
255d0c14 KK |
2087 | goto err1; |
2088 | ||
2089 | mutex_lock(&lock); | |
2090 | ret = cma_acquire_dev(id_priv); | |
2091 | mutex_unlock(&lock); | |
2092 | if (ret) | |
2093 | goto err1; | |
e51060f0 SH |
2094 | } |
2095 | ||
2096 | memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr)); | |
2097 | ret = cma_get_port(id_priv); | |
2098 | if (ret) | |
255d0c14 | 2099 | goto err2; |
e51060f0 SH |
2100 | |
2101 | return 0; | |
255d0c14 KK |
2102 | err2: |
2103 | if (!cma_any_addr(addr)) { | |
2104 | mutex_lock(&lock); | |
2105 | cma_detach_from_dev(id_priv); | |
2106 | mutex_unlock(&lock); | |
2107 | } | |
2108 | err1: | |
e51060f0 SH |
2109 | cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_IDLE); |
2110 | return ret; | |
2111 | } | |
2112 | EXPORT_SYMBOL(rdma_bind_addr); | |
2113 | ||
2114 | static int cma_format_hdr(void *hdr, enum rdma_port_space ps, | |
2115 | struct rdma_route *route) | |
2116 | { | |
2117 | struct sockaddr_in *src4, *dst4; | |
2118 | struct cma_hdr *cma_hdr; | |
2119 | struct sdp_hh *sdp_hdr; | |
2120 | ||
2121 | src4 = (struct sockaddr_in *) &route->addr.src_addr; | |
2122 | dst4 = (struct sockaddr_in *) &route->addr.dst_addr; | |
2123 | ||
2124 | switch (ps) { | |
2125 | case RDMA_PS_SDP: | |
2126 | sdp_hdr = hdr; | |
2127 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2128 | return -EINVAL; | |
2129 | sdp_set_ip_ver(sdp_hdr, 4); | |
2130 | sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2131 | sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2132 | sdp_hdr->port = src4->sin_port; | |
2133 | break; | |
2134 | default: | |
2135 | cma_hdr = hdr; | |
2136 | cma_hdr->cma_version = CMA_VERSION; | |
2137 | cma_set_ip_ver(cma_hdr, 4); | |
2138 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2139 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2140 | cma_hdr->port = src4->sin_port; | |
2141 | break; | |
2142 | } | |
2143 | return 0; | |
2144 | } | |
2145 | ||
628e5f6d SH |
2146 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
2147 | struct ib_cm_event *ib_event) | |
2148 | { | |
2149 | struct rdma_id_private *id_priv = cm_id->context; | |
2150 | struct rdma_cm_event event; | |
2151 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
2152 | int ret = 0; | |
2153 | ||
de910bd9 | 2154 | if (cma_disable_callback(id_priv, CMA_CONNECT)) |
8aa08602 | 2155 | return 0; |
628e5f6d | 2156 | |
8aa08602 | 2157 | memset(&event, 0, sizeof event); |
628e5f6d SH |
2158 | switch (ib_event->event) { |
2159 | case IB_CM_SIDR_REQ_ERROR: | |
2160 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2161 | event.status = -ETIMEDOUT; | |
2162 | break; | |
2163 | case IB_CM_SIDR_REP_RECEIVED: | |
2164 | event.param.ud.private_data = ib_event->private_data; | |
2165 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
2166 | if (rep->status != IB_SIDR_SUCCESS) { | |
2167 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2168 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
2169 | break; | |
2170 | } | |
c8f6a362 | 2171 | if (id_priv->qkey != rep->qkey) { |
628e5f6d SH |
2172 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
2173 | event.status = -EINVAL; | |
2174 | break; | |
2175 | } | |
2176 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
2177 | id_priv->id.route.path_rec, | |
2178 | &event.param.ud.ah_attr); | |
2179 | event.param.ud.qp_num = rep->qpn; | |
2180 | event.param.ud.qkey = rep->qkey; | |
2181 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
2182 | event.status = 0; | |
2183 | break; | |
2184 | default: | |
468f2239 | 2185 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
2186 | ib_event->event); |
2187 | goto out; | |
2188 | } | |
2189 | ||
2190 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2191 | if (ret) { | |
2192 | /* Destroy the CM ID by returning a non-zero value. */ | |
2193 | id_priv->cm_id.ib = NULL; | |
2194 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 2195 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2196 | rdma_destroy_id(&id_priv->id); |
2197 | return ret; | |
2198 | } | |
2199 | out: | |
de910bd9 | 2200 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2201 | return ret; |
2202 | } | |
2203 | ||
2204 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
2205 | struct rdma_conn_param *conn_param) | |
2206 | { | |
2207 | struct ib_cm_sidr_req_param req; | |
2208 | struct rdma_route *route; | |
2209 | int ret; | |
2210 | ||
2211 | req.private_data_len = sizeof(struct cma_hdr) + | |
2212 | conn_param->private_data_len; | |
2213 | req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2214 | if (!req.private_data) | |
2215 | return -ENOMEM; | |
2216 | ||
2217 | if (conn_param->private_data && conn_param->private_data_len) | |
2218 | memcpy((void *) req.private_data + sizeof(struct cma_hdr), | |
2219 | conn_param->private_data, conn_param->private_data_len); | |
2220 | ||
2221 | route = &id_priv->id.route; | |
2222 | ret = cma_format_hdr((void *) req.private_data, id_priv->id.ps, route); | |
2223 | if (ret) | |
2224 | goto out; | |
2225 | ||
2226 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, | |
2227 | cma_sidr_rep_handler, id_priv); | |
2228 | if (IS_ERR(id_priv->cm_id.ib)) { | |
2229 | ret = PTR_ERR(id_priv->cm_id.ib); | |
2230 | goto out; | |
2231 | } | |
2232 | ||
2233 | req.path = route->path_rec; | |
2234 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
2235 | &route->addr.dst_addr); | |
2236 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); | |
2237 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2238 | ||
2239 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
2240 | if (ret) { | |
2241 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2242 | id_priv->cm_id.ib = NULL; | |
2243 | } | |
2244 | out: | |
2245 | kfree(req.private_data); | |
2246 | return ret; | |
2247 | } | |
2248 | ||
e51060f0 SH |
2249 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
2250 | struct rdma_conn_param *conn_param) | |
2251 | { | |
2252 | struct ib_cm_req_param req; | |
2253 | struct rdma_route *route; | |
2254 | void *private_data; | |
2255 | int offset, ret; | |
2256 | ||
2257 | memset(&req, 0, sizeof req); | |
2258 | offset = cma_user_data_offset(id_priv->id.ps); | |
2259 | req.private_data_len = offset + conn_param->private_data_len; | |
2260 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2261 | if (!private_data) | |
2262 | return -ENOMEM; | |
2263 | ||
2264 | if (conn_param->private_data && conn_param->private_data_len) | |
2265 | memcpy(private_data + offset, conn_param->private_data, | |
2266 | conn_param->private_data_len); | |
2267 | ||
2268 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, cma_ib_handler, | |
2269 | id_priv); | |
2270 | if (IS_ERR(id_priv->cm_id.ib)) { | |
2271 | ret = PTR_ERR(id_priv->cm_id.ib); | |
2272 | goto out; | |
2273 | } | |
2274 | ||
2275 | route = &id_priv->id.route; | |
2276 | ret = cma_format_hdr(private_data, id_priv->id.ps, route); | |
2277 | if (ret) | |
2278 | goto out; | |
2279 | req.private_data = private_data; | |
2280 | ||
2281 | req.primary_path = &route->path_rec[0]; | |
2282 | if (route->num_paths == 2) | |
2283 | req.alternate_path = &route->path_rec[1]; | |
2284 | ||
2285 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
2286 | &route->addr.dst_addr); | |
2287 | req.qp_num = id_priv->qp_num; | |
9b2e9c0c | 2288 | req.qp_type = IB_QPT_RC; |
e51060f0 SH |
2289 | req.starting_psn = id_priv->seq_num; |
2290 | req.responder_resources = conn_param->responder_resources; | |
2291 | req.initiator_depth = conn_param->initiator_depth; | |
2292 | req.flow_control = conn_param->flow_control; | |
2293 | req.retry_count = conn_param->retry_count; | |
2294 | req.rnr_retry_count = conn_param->rnr_retry_count; | |
2295 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2296 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2297 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2298 | req.srq = id_priv->srq ? 1 : 0; | |
2299 | ||
2300 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
2301 | out: | |
675a027c KK |
2302 | if (ret && !IS_ERR(id_priv->cm_id.ib)) { |
2303 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2304 | id_priv->cm_id.ib = NULL; | |
2305 | } | |
2306 | ||
e51060f0 SH |
2307 | kfree(private_data); |
2308 | return ret; | |
2309 | } | |
2310 | ||
07ebafba TT |
2311 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
2312 | struct rdma_conn_param *conn_param) | |
2313 | { | |
2314 | struct iw_cm_id *cm_id; | |
2315 | struct sockaddr_in* sin; | |
2316 | int ret; | |
2317 | struct iw_cm_conn_param iw_param; | |
2318 | ||
2319 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
2320 | if (IS_ERR(cm_id)) { | |
2321 | ret = PTR_ERR(cm_id); | |
2322 | goto out; | |
2323 | } | |
2324 | ||
2325 | id_priv->cm_id.iw = cm_id; | |
2326 | ||
2327 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.src_addr; | |
2328 | cm_id->local_addr = *sin; | |
2329 | ||
2330 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.dst_addr; | |
2331 | cm_id->remote_addr = *sin; | |
2332 | ||
5851bb89 | 2333 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
2334 | if (ret) |
2335 | goto out; | |
07ebafba TT |
2336 | |
2337 | iw_param.ord = conn_param->initiator_depth; | |
2338 | iw_param.ird = conn_param->responder_resources; | |
2339 | iw_param.private_data = conn_param->private_data; | |
2340 | iw_param.private_data_len = conn_param->private_data_len; | |
2341 | if (id_priv->id.qp) | |
2342 | iw_param.qpn = id_priv->qp_num; | |
2343 | else | |
2344 | iw_param.qpn = conn_param->qp_num; | |
2345 | ret = iw_cm_connect(cm_id, &iw_param); | |
2346 | out: | |
675a027c KK |
2347 | if (ret && !IS_ERR(cm_id)) { |
2348 | iw_destroy_cm_id(cm_id); | |
2349 | id_priv->cm_id.iw = NULL; | |
2350 | } | |
07ebafba TT |
2351 | return ret; |
2352 | } | |
2353 | ||
e51060f0 SH |
2354 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2355 | { | |
2356 | struct rdma_id_private *id_priv; | |
2357 | int ret; | |
2358 | ||
2359 | id_priv = container_of(id, struct rdma_id_private, id); | |
2360 | if (!cma_comp_exch(id_priv, CMA_ROUTE_RESOLVED, CMA_CONNECT)) | |
2361 | return -EINVAL; | |
2362 | ||
2363 | if (!id->qp) { | |
2364 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2365 | id_priv->srq = conn_param->srq; |
2366 | } | |
2367 | ||
07ebafba TT |
2368 | switch (rdma_node_get_transport(id->device->node_type)) { |
2369 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2370 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2371 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
2372 | else | |
2373 | ret = cma_connect_ib(id_priv, conn_param); | |
e51060f0 | 2374 | break; |
07ebafba TT |
2375 | case RDMA_TRANSPORT_IWARP: |
2376 | ret = cma_connect_iw(id_priv, conn_param); | |
2377 | break; | |
e51060f0 SH |
2378 | default: |
2379 | ret = -ENOSYS; | |
2380 | break; | |
2381 | } | |
2382 | if (ret) | |
2383 | goto err; | |
2384 | ||
2385 | return 0; | |
2386 | err: | |
2387 | cma_comp_exch(id_priv, CMA_CONNECT, CMA_ROUTE_RESOLVED); | |
2388 | return ret; | |
2389 | } | |
2390 | EXPORT_SYMBOL(rdma_connect); | |
2391 | ||
2392 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
2393 | struct rdma_conn_param *conn_param) | |
2394 | { | |
2395 | struct ib_cm_rep_param rep; | |
5851bb89 | 2396 | int ret; |
0fe313b0 | 2397 | |
5851bb89 SH |
2398 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
2399 | if (ret) | |
2400 | goto out; | |
0fe313b0 | 2401 | |
5851bb89 SH |
2402 | ret = cma_modify_qp_rts(id_priv, conn_param); |
2403 | if (ret) | |
2404 | goto out; | |
e51060f0 SH |
2405 | |
2406 | memset(&rep, 0, sizeof rep); | |
2407 | rep.qp_num = id_priv->qp_num; | |
2408 | rep.starting_psn = id_priv->seq_num; | |
2409 | rep.private_data = conn_param->private_data; | |
2410 | rep.private_data_len = conn_param->private_data_len; | |
2411 | rep.responder_resources = conn_param->responder_resources; | |
2412 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
2413 | rep.failover_accepted = 0; |
2414 | rep.flow_control = conn_param->flow_control; | |
2415 | rep.rnr_retry_count = conn_param->rnr_retry_count; | |
2416 | rep.srq = id_priv->srq ? 1 : 0; | |
2417 | ||
0fe313b0 SH |
2418 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
2419 | out: | |
2420 | return ret; | |
e51060f0 SH |
2421 | } |
2422 | ||
07ebafba TT |
2423 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
2424 | struct rdma_conn_param *conn_param) | |
2425 | { | |
2426 | struct iw_cm_conn_param iw_param; | |
2427 | int ret; | |
2428 | ||
5851bb89 | 2429 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
2430 | if (ret) |
2431 | return ret; | |
2432 | ||
2433 | iw_param.ord = conn_param->initiator_depth; | |
2434 | iw_param.ird = conn_param->responder_resources; | |
2435 | iw_param.private_data = conn_param->private_data; | |
2436 | iw_param.private_data_len = conn_param->private_data_len; | |
2437 | if (id_priv->id.qp) { | |
2438 | iw_param.qpn = id_priv->qp_num; | |
2439 | } else | |
2440 | iw_param.qpn = conn_param->qp_num; | |
2441 | ||
2442 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
2443 | } | |
2444 | ||
628e5f6d SH |
2445 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
2446 | enum ib_cm_sidr_status status, | |
2447 | const void *private_data, int private_data_len) | |
2448 | { | |
2449 | struct ib_cm_sidr_rep_param rep; | |
2450 | ||
2451 | memset(&rep, 0, sizeof rep); | |
2452 | rep.status = status; | |
2453 | if (status == IB_SIDR_SUCCESS) { | |
2454 | rep.qp_num = id_priv->qp_num; | |
c8f6a362 | 2455 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
2456 | } |
2457 | rep.private_data = private_data; | |
2458 | rep.private_data_len = private_data_len; | |
2459 | ||
2460 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
2461 | } | |
2462 | ||
e51060f0 SH |
2463 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2464 | { | |
2465 | struct rdma_id_private *id_priv; | |
2466 | int ret; | |
2467 | ||
2468 | id_priv = container_of(id, struct rdma_id_private, id); | |
2469 | if (!cma_comp(id_priv, CMA_CONNECT)) | |
2470 | return -EINVAL; | |
2471 | ||
2472 | if (!id->qp && conn_param) { | |
2473 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2474 | id_priv->srq = conn_param->srq; |
2475 | } | |
2476 | ||
07ebafba TT |
2477 | switch (rdma_node_get_transport(id->device->node_type)) { |
2478 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2479 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2480 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, |
2481 | conn_param->private_data, | |
2482 | conn_param->private_data_len); | |
2483 | else if (conn_param) | |
e51060f0 SH |
2484 | ret = cma_accept_ib(id_priv, conn_param); |
2485 | else | |
2486 | ret = cma_rep_recv(id_priv); | |
2487 | break; | |
07ebafba TT |
2488 | case RDMA_TRANSPORT_IWARP: |
2489 | ret = cma_accept_iw(id_priv, conn_param); | |
2490 | break; | |
e51060f0 SH |
2491 | default: |
2492 | ret = -ENOSYS; | |
2493 | break; | |
2494 | } | |
2495 | ||
2496 | if (ret) | |
2497 | goto reject; | |
2498 | ||
2499 | return 0; | |
2500 | reject: | |
c5483388 | 2501 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
2502 | rdma_reject(id, NULL, 0); |
2503 | return ret; | |
2504 | } | |
2505 | EXPORT_SYMBOL(rdma_accept); | |
2506 | ||
0fe313b0 SH |
2507 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
2508 | { | |
2509 | struct rdma_id_private *id_priv; | |
2510 | int ret; | |
2511 | ||
2512 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2513 | if (!cma_has_cm_dev(id_priv)) |
0fe313b0 SH |
2514 | return -EINVAL; |
2515 | ||
2516 | switch (id->device->node_type) { | |
2517 | case RDMA_NODE_IB_CA: | |
2518 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
2519 | break; | |
2520 | default: | |
2521 | ret = 0; | |
2522 | break; | |
2523 | } | |
2524 | return ret; | |
2525 | } | |
2526 | EXPORT_SYMBOL(rdma_notify); | |
2527 | ||
e51060f0 SH |
2528 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
2529 | u8 private_data_len) | |
2530 | { | |
2531 | struct rdma_id_private *id_priv; | |
2532 | int ret; | |
2533 | ||
2534 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2535 | if (!cma_has_cm_dev(id_priv)) |
e51060f0 SH |
2536 | return -EINVAL; |
2537 | ||
07ebafba TT |
2538 | switch (rdma_node_get_transport(id->device->node_type)) { |
2539 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2540 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2541 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, |
2542 | private_data, private_data_len); | |
2543 | else | |
2544 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
2545 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
2546 | 0, private_data, private_data_len); | |
e51060f0 | 2547 | break; |
07ebafba TT |
2548 | case RDMA_TRANSPORT_IWARP: |
2549 | ret = iw_cm_reject(id_priv->cm_id.iw, | |
2550 | private_data, private_data_len); | |
2551 | break; | |
e51060f0 SH |
2552 | default: |
2553 | ret = -ENOSYS; | |
2554 | break; | |
2555 | } | |
2556 | return ret; | |
2557 | } | |
2558 | EXPORT_SYMBOL(rdma_reject); | |
2559 | ||
2560 | int rdma_disconnect(struct rdma_cm_id *id) | |
2561 | { | |
2562 | struct rdma_id_private *id_priv; | |
2563 | int ret; | |
2564 | ||
2565 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2566 | if (!cma_has_cm_dev(id_priv)) |
e51060f0 SH |
2567 | return -EINVAL; |
2568 | ||
07ebafba TT |
2569 | switch (rdma_node_get_transport(id->device->node_type)) { |
2570 | case RDMA_TRANSPORT_IB: | |
c5483388 | 2571 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
2572 | if (ret) |
2573 | goto out; | |
e51060f0 SH |
2574 | /* Initiate or respond to a disconnect. */ |
2575 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
2576 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
2577 | break; | |
07ebafba TT |
2578 | case RDMA_TRANSPORT_IWARP: |
2579 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); | |
2580 | break; | |
e51060f0 | 2581 | default: |
07ebafba | 2582 | ret = -EINVAL; |
e51060f0 SH |
2583 | break; |
2584 | } | |
2585 | out: | |
2586 | return ret; | |
2587 | } | |
2588 | EXPORT_SYMBOL(rdma_disconnect); | |
2589 | ||
c8f6a362 SH |
2590 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
2591 | { | |
2592 | struct rdma_id_private *id_priv; | |
2593 | struct cma_multicast *mc = multicast->context; | |
2594 | struct rdma_cm_event event; | |
2595 | int ret; | |
2596 | ||
2597 | id_priv = mc->id_priv; | |
de910bd9 OG |
2598 | if (cma_disable_callback(id_priv, CMA_ADDR_BOUND) && |
2599 | cma_disable_callback(id_priv, CMA_ADDR_RESOLVED)) | |
8aa08602 | 2600 | return 0; |
c8f6a362 | 2601 | |
c5483388 | 2602 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
2603 | if (!status && id_priv->id.qp) |
2604 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
2605 | multicast->rec.mlid); | |
c5483388 | 2606 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
2607 | |
2608 | memset(&event, 0, sizeof event); | |
2609 | event.status = status; | |
2610 | event.param.ud.private_data = mc->context; | |
2611 | if (!status) { | |
2612 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
2613 | ib_init_ah_from_mcmember(id_priv->id.device, | |
2614 | id_priv->id.port_num, &multicast->rec, | |
2615 | &event.param.ud.ah_attr); | |
2616 | event.param.ud.qp_num = 0xFFFFFF; | |
2617 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
2618 | } else | |
2619 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
2620 | ||
2621 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2622 | if (ret) { | |
2623 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 2624 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2625 | rdma_destroy_id(&id_priv->id); |
2626 | return 0; | |
2627 | } | |
8aa08602 | 2628 | |
de910bd9 | 2629 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2630 | return 0; |
2631 | } | |
2632 | ||
2633 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
2634 | struct sockaddr *addr, union ib_gid *mgid) | |
2635 | { | |
2636 | unsigned char mc_map[MAX_ADDR_LEN]; | |
2637 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2638 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
2639 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
2640 | ||
2641 | if (cma_any_addr(addr)) { | |
2642 | memset(mgid, 0, sizeof *mgid); | |
2643 | } else if ((addr->sa_family == AF_INET6) && | |
2644 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFF10A01B) == | |
2645 | 0xFF10A01B)) { | |
2646 | /* IPv6 address is an SA assigned MGID. */ | |
2647 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
2648 | } else { | |
a9e527e3 | 2649 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
2650 | if (id_priv->id.ps == RDMA_PS_UDP) |
2651 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
2652 | *mgid = *(union ib_gid *) (mc_map + 4); |
2653 | } | |
2654 | } | |
2655 | ||
2656 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
2657 | struct cma_multicast *mc) | |
2658 | { | |
2659 | struct ib_sa_mcmember_rec rec; | |
2660 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2661 | ib_sa_comp_mask comp_mask; | |
2662 | int ret; | |
2663 | ||
2664 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
2665 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
2666 | &rec.mgid, &rec); | |
2667 | if (ret) | |
2668 | return ret; | |
2669 | ||
2670 | cma_set_mgid(id_priv, &mc->addr, &rec.mgid); | |
2671 | if (id_priv->id.ps == RDMA_PS_UDP) | |
2672 | rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
2673 | ib_addr_get_sgid(dev_addr, &rec.port_gid); | |
2674 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
2675 | rec.join_state = 1; | |
2676 | ||
2677 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
2678 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
2679 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
2680 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
2681 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
2682 | ||
2683 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, | |
2684 | id_priv->id.port_num, &rec, | |
2685 | comp_mask, GFP_KERNEL, | |
2686 | cma_ib_mc_handler, mc); | |
2687 | if (IS_ERR(mc->multicast.ib)) | |
2688 | return PTR_ERR(mc->multicast.ib); | |
2689 | ||
2690 | return 0; | |
2691 | } | |
2692 | ||
2693 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, | |
2694 | void *context) | |
2695 | { | |
2696 | struct rdma_id_private *id_priv; | |
2697 | struct cma_multicast *mc; | |
2698 | int ret; | |
2699 | ||
2700 | id_priv = container_of(id, struct rdma_id_private, id); | |
2701 | if (!cma_comp(id_priv, CMA_ADDR_BOUND) && | |
2702 | !cma_comp(id_priv, CMA_ADDR_RESOLVED)) | |
2703 | return -EINVAL; | |
2704 | ||
2705 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
2706 | if (!mc) | |
2707 | return -ENOMEM; | |
2708 | ||
2709 | memcpy(&mc->addr, addr, ip_addr_size(addr)); | |
2710 | mc->context = context; | |
2711 | mc->id_priv = id_priv; | |
2712 | ||
2713 | spin_lock(&id_priv->lock); | |
2714 | list_add(&mc->list, &id_priv->mc_list); | |
2715 | spin_unlock(&id_priv->lock); | |
2716 | ||
2717 | switch (rdma_node_get_transport(id->device->node_type)) { | |
2718 | case RDMA_TRANSPORT_IB: | |
2719 | ret = cma_join_ib_multicast(id_priv, mc); | |
2720 | break; | |
2721 | default: | |
2722 | ret = -ENOSYS; | |
2723 | break; | |
2724 | } | |
2725 | ||
2726 | if (ret) { | |
2727 | spin_lock_irq(&id_priv->lock); | |
2728 | list_del(&mc->list); | |
2729 | spin_unlock_irq(&id_priv->lock); | |
2730 | kfree(mc); | |
2731 | } | |
2732 | return ret; | |
2733 | } | |
2734 | EXPORT_SYMBOL(rdma_join_multicast); | |
2735 | ||
2736 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
2737 | { | |
2738 | struct rdma_id_private *id_priv; | |
2739 | struct cma_multicast *mc; | |
2740 | ||
2741 | id_priv = container_of(id, struct rdma_id_private, id); | |
2742 | spin_lock_irq(&id_priv->lock); | |
2743 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
2744 | if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) { | |
2745 | list_del(&mc->list); | |
2746 | spin_unlock_irq(&id_priv->lock); | |
2747 | ||
2748 | if (id->qp) | |
2749 | ib_detach_mcast(id->qp, | |
2750 | &mc->multicast.ib->rec.mgid, | |
2751 | mc->multicast.ib->rec.mlid); | |
2752 | ib_sa_free_multicast(mc->multicast.ib); | |
2753 | kfree(mc); | |
2754 | return; | |
2755 | } | |
2756 | } | |
2757 | spin_unlock_irq(&id_priv->lock); | |
2758 | } | |
2759 | EXPORT_SYMBOL(rdma_leave_multicast); | |
2760 | ||
dd5bdff8 OG |
2761 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
2762 | { | |
2763 | struct rdma_dev_addr *dev_addr; | |
2764 | struct cma_ndev_work *work; | |
2765 | ||
2766 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
2767 | ||
2768 | if ((dev_addr->src_dev == ndev) && | |
2769 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { | |
2770 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
2771 | ndev->name, &id_priv->id); | |
2772 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2773 | if (!work) | |
2774 | return -ENOMEM; | |
2775 | ||
2776 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
2777 | work->id = id_priv; | |
2778 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
2779 | atomic_inc(&id_priv->refcount); | |
2780 | queue_work(cma_wq, &work->work); | |
2781 | } | |
2782 | ||
2783 | return 0; | |
2784 | } | |
2785 | ||
2786 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
2787 | void *ctx) | |
2788 | { | |
2789 | struct net_device *ndev = (struct net_device *)ctx; | |
2790 | struct cma_device *cma_dev; | |
2791 | struct rdma_id_private *id_priv; | |
2792 | int ret = NOTIFY_DONE; | |
2793 | ||
2794 | if (dev_net(ndev) != &init_net) | |
2795 | return NOTIFY_DONE; | |
2796 | ||
2797 | if (event != NETDEV_BONDING_FAILOVER) | |
2798 | return NOTIFY_DONE; | |
2799 | ||
2800 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
2801 | return NOTIFY_DONE; | |
2802 | ||
2803 | mutex_lock(&lock); | |
2804 | list_for_each_entry(cma_dev, &dev_list, list) | |
2805 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
2806 | ret = cma_netdev_change(ndev, id_priv); | |
2807 | if (ret) | |
2808 | goto out; | |
2809 | } | |
2810 | ||
2811 | out: | |
2812 | mutex_unlock(&lock); | |
2813 | return ret; | |
2814 | } | |
2815 | ||
2816 | static struct notifier_block cma_nb = { | |
2817 | .notifier_call = cma_netdev_callback | |
2818 | }; | |
2819 | ||
e51060f0 SH |
2820 | static void cma_add_one(struct ib_device *device) |
2821 | { | |
2822 | struct cma_device *cma_dev; | |
2823 | struct rdma_id_private *id_priv; | |
2824 | ||
2825 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
2826 | if (!cma_dev) | |
2827 | return; | |
2828 | ||
2829 | cma_dev->device = device; | |
e51060f0 SH |
2830 | |
2831 | init_completion(&cma_dev->comp); | |
2832 | atomic_set(&cma_dev->refcount, 1); | |
2833 | INIT_LIST_HEAD(&cma_dev->id_list); | |
2834 | ib_set_client_data(device, &cma_client, cma_dev); | |
2835 | ||
2836 | mutex_lock(&lock); | |
2837 | list_add_tail(&cma_dev->list, &dev_list); | |
2838 | list_for_each_entry(id_priv, &listen_any_list, list) | |
2839 | cma_listen_on_dev(id_priv, cma_dev); | |
2840 | mutex_unlock(&lock); | |
e51060f0 SH |
2841 | } |
2842 | ||
2843 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
2844 | { | |
a1b1b61f | 2845 | struct rdma_cm_event event; |
e51060f0 | 2846 | enum cma_state state; |
de910bd9 | 2847 | int ret = 0; |
e51060f0 SH |
2848 | |
2849 | /* Record that we want to remove the device */ | |
2850 | state = cma_exch(id_priv, CMA_DEVICE_REMOVAL); | |
2851 | if (state == CMA_DESTROYING) | |
2852 | return 0; | |
2853 | ||
2854 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 2855 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2856 | |
2857 | /* Check for destruction from another callback. */ | |
2858 | if (!cma_comp(id_priv, CMA_DEVICE_REMOVAL)) | |
de910bd9 | 2859 | goto out; |
e51060f0 | 2860 | |
a1b1b61f SH |
2861 | memset(&event, 0, sizeof event); |
2862 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
2863 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
2864 | out: | |
2865 | mutex_unlock(&id_priv->handler_mutex); | |
2866 | return ret; | |
e51060f0 SH |
2867 | } |
2868 | ||
2869 | static void cma_process_remove(struct cma_device *cma_dev) | |
2870 | { | |
e51060f0 SH |
2871 | struct rdma_id_private *id_priv; |
2872 | int ret; | |
2873 | ||
e51060f0 SH |
2874 | mutex_lock(&lock); |
2875 | while (!list_empty(&cma_dev->id_list)) { | |
2876 | id_priv = list_entry(cma_dev->id_list.next, | |
2877 | struct rdma_id_private, list); | |
2878 | ||
d02d1f53 | 2879 | list_del(&id_priv->listen_list); |
94de178a | 2880 | list_del_init(&id_priv->list); |
e51060f0 SH |
2881 | atomic_inc(&id_priv->refcount); |
2882 | mutex_unlock(&lock); | |
2883 | ||
d02d1f53 | 2884 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
2885 | cma_deref_id(id_priv); |
2886 | if (ret) | |
2887 | rdma_destroy_id(&id_priv->id); | |
2888 | ||
2889 | mutex_lock(&lock); | |
2890 | } | |
2891 | mutex_unlock(&lock); | |
2892 | ||
2893 | cma_deref_dev(cma_dev); | |
2894 | wait_for_completion(&cma_dev->comp); | |
2895 | } | |
2896 | ||
2897 | static void cma_remove_one(struct ib_device *device) | |
2898 | { | |
2899 | struct cma_device *cma_dev; | |
2900 | ||
2901 | cma_dev = ib_get_client_data(device, &cma_client); | |
2902 | if (!cma_dev) | |
2903 | return; | |
2904 | ||
2905 | mutex_lock(&lock); | |
2906 | list_del(&cma_dev->list); | |
2907 | mutex_unlock(&lock); | |
2908 | ||
2909 | cma_process_remove(cma_dev); | |
2910 | kfree(cma_dev); | |
2911 | } | |
2912 | ||
2913 | static int cma_init(void) | |
2914 | { | |
a25de534 | 2915 | int ret, low, high, remaining; |
e51060f0 | 2916 | |
aedec080 | 2917 | get_random_bytes(&next_port, sizeof next_port); |
227b60f5 | 2918 | inet_get_local_port_range(&low, &high); |
a25de534 AA |
2919 | remaining = (high - low) + 1; |
2920 | next_port = ((unsigned int) next_port % remaining) + low; | |
227b60f5 | 2921 | |
c7f743a6 | 2922 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
2923 | if (!cma_wq) |
2924 | return -ENOMEM; | |
2925 | ||
c1a0b23b | 2926 | ib_sa_register_client(&sa_client); |
7a118df3 | 2927 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 2928 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 2929 | |
e51060f0 SH |
2930 | ret = ib_register_client(&cma_client); |
2931 | if (ret) | |
2932 | goto err; | |
2933 | return 0; | |
2934 | ||
2935 | err: | |
dd5bdff8 | 2936 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 2937 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 2938 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
2939 | destroy_workqueue(cma_wq); |
2940 | return ret; | |
2941 | } | |
2942 | ||
2943 | static void cma_cleanup(void) | |
2944 | { | |
2945 | ib_unregister_client(&cma_client); | |
dd5bdff8 | 2946 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 2947 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 2948 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
2949 | destroy_workqueue(cma_wq); |
2950 | idr_destroy(&sdp_ps); | |
2951 | idr_destroy(&tcp_ps); | |
628e5f6d | 2952 | idr_destroy(&udp_ps); |
c8f6a362 | 2953 | idr_destroy(&ipoib_ps); |
e51060f0 SH |
2954 | } |
2955 | ||
2956 | module_init(cma_init); | |
2957 | module_exit(cma_cleanup); |