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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; | |
3f446754 | 158 | struct sockaddr_storage addr; |
c8f6a362 SH |
159 | }; |
160 | ||
e51060f0 SH |
161 | struct cma_work { |
162 | struct work_struct work; | |
163 | struct rdma_id_private *id; | |
164 | enum cma_state old_state; | |
165 | enum cma_state new_state; | |
166 | struct rdma_cm_event event; | |
167 | }; | |
168 | ||
dd5bdff8 OG |
169 | struct cma_ndev_work { |
170 | struct work_struct work; | |
171 | struct rdma_id_private *id; | |
172 | struct rdma_cm_event event; | |
173 | }; | |
174 | ||
e51060f0 SH |
175 | union cma_ip_addr { |
176 | struct in6_addr ip6; | |
177 | struct { | |
1b90c137 AV |
178 | __be32 pad[3]; |
179 | __be32 addr; | |
e51060f0 SH |
180 | } ip4; |
181 | }; | |
182 | ||
183 | struct cma_hdr { | |
184 | u8 cma_version; | |
185 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 186 | __be16 port; |
e51060f0 SH |
187 | union cma_ip_addr src_addr; |
188 | union cma_ip_addr dst_addr; | |
189 | }; | |
190 | ||
191 | struct sdp_hh { | |
192 | u8 bsdh[16]; | |
193 | u8 sdp_version; /* Major version: 7:4 */ | |
194 | u8 ip_version; /* IP version: 7:4 */ | |
195 | u8 sdp_specific1[10]; | |
1b90c137 AV |
196 | __be16 port; |
197 | __be16 sdp_specific2; | |
e51060f0 SH |
198 | union cma_ip_addr src_addr; |
199 | union cma_ip_addr dst_addr; | |
200 | }; | |
201 | ||
202 | struct sdp_hah { | |
203 | u8 bsdh[16]; | |
204 | u8 sdp_version; | |
205 | }; | |
206 | ||
207 | #define CMA_VERSION 0x00 | |
208 | #define SDP_MAJ_VERSION 0x2 | |
209 | ||
210 | static int cma_comp(struct rdma_id_private *id_priv, enum cma_state comp) | |
211 | { | |
212 | unsigned long flags; | |
213 | int ret; | |
214 | ||
215 | spin_lock_irqsave(&id_priv->lock, flags); | |
216 | ret = (id_priv->state == comp); | |
217 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
218 | return ret; | |
219 | } | |
220 | ||
221 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
222 | enum cma_state comp, enum cma_state exch) | |
223 | { | |
224 | unsigned long flags; | |
225 | int ret; | |
226 | ||
227 | spin_lock_irqsave(&id_priv->lock, flags); | |
228 | if ((ret = (id_priv->state == comp))) | |
229 | id_priv->state = exch; | |
230 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
231 | return ret; | |
232 | } | |
233 | ||
234 | static enum cma_state cma_exch(struct rdma_id_private *id_priv, | |
235 | enum cma_state exch) | |
236 | { | |
237 | unsigned long flags; | |
238 | enum cma_state old; | |
239 | ||
240 | spin_lock_irqsave(&id_priv->lock, flags); | |
241 | old = id_priv->state; | |
242 | id_priv->state = exch; | |
243 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
244 | return old; | |
245 | } | |
246 | ||
247 | static inline u8 cma_get_ip_ver(struct cma_hdr *hdr) | |
248 | { | |
249 | return hdr->ip_version >> 4; | |
250 | } | |
251 | ||
252 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
253 | { | |
254 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
255 | } | |
256 | ||
257 | static inline u8 sdp_get_majv(u8 sdp_version) | |
258 | { | |
259 | return sdp_version >> 4; | |
260 | } | |
261 | ||
262 | static inline u8 sdp_get_ip_ver(struct sdp_hh *hh) | |
263 | { | |
264 | return hh->ip_version >> 4; | |
265 | } | |
266 | ||
267 | static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) | |
268 | { | |
269 | hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF); | |
270 | } | |
271 | ||
c8f6a362 SH |
272 | static inline int cma_is_ud_ps(enum rdma_port_space ps) |
273 | { | |
274 | return (ps == RDMA_PS_UDP || ps == RDMA_PS_IPOIB); | |
275 | } | |
276 | ||
e51060f0 SH |
277 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
278 | struct cma_device *cma_dev) | |
279 | { | |
280 | atomic_inc(&cma_dev->refcount); | |
281 | id_priv->cma_dev = cma_dev; | |
282 | id_priv->id.device = cma_dev->device; | |
283 | list_add_tail(&id_priv->list, &cma_dev->id_list); | |
284 | } | |
285 | ||
286 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
287 | { | |
288 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
289 | complete(&cma_dev->comp); | |
290 | } | |
291 | ||
292 | static void cma_detach_from_dev(struct rdma_id_private *id_priv) | |
293 | { | |
294 | list_del(&id_priv->list); | |
295 | cma_deref_dev(id_priv->cma_dev); | |
296 | id_priv->cma_dev = NULL; | |
297 | } | |
298 | ||
c8f6a362 SH |
299 | static int cma_set_qkey(struct ib_device *device, u8 port_num, |
300 | enum rdma_port_space ps, | |
301 | struct rdma_dev_addr *dev_addr, u32 *qkey) | |
302 | { | |
303 | struct ib_sa_mcmember_rec rec; | |
304 | int ret = 0; | |
305 | ||
306 | switch (ps) { | |
307 | case RDMA_PS_UDP: | |
308 | *qkey = RDMA_UDP_QKEY; | |
309 | break; | |
310 | case RDMA_PS_IPOIB: | |
311 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
312 | ret = ib_sa_get_mcmember_rec(device, port_num, &rec.mgid, &rec); | |
313 | *qkey = be32_to_cpu(rec.qkey); | |
314 | break; | |
315 | default: | |
316 | break; | |
317 | } | |
318 | return ret; | |
319 | } | |
320 | ||
07ebafba | 321 | static int cma_acquire_dev(struct rdma_id_private *id_priv) |
e51060f0 | 322 | { |
c8f6a362 | 323 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 324 | struct cma_device *cma_dev; |
f0ee3404 | 325 | union ib_gid gid; |
e51060f0 SH |
326 | int ret = -ENODEV; |
327 | ||
c8f6a362 | 328 | switch (rdma_node_get_transport(dev_addr->dev_type)) { |
07ebafba | 329 | case RDMA_TRANSPORT_IB: |
c8f6a362 | 330 | ib_addr_get_sgid(dev_addr, &gid); |
07ebafba TT |
331 | break; |
332 | case RDMA_TRANSPORT_IWARP: | |
c8f6a362 | 333 | iw_addr_get_sgid(dev_addr, &gid); |
07ebafba TT |
334 | break; |
335 | default: | |
336 | return -ENODEV; | |
337 | } | |
61a73c70 | 338 | |
e51060f0 | 339 | list_for_each_entry(cma_dev, &dev_list, list) { |
f0ee3404 | 340 | ret = ib_find_cached_gid(cma_dev->device, &gid, |
e51060f0 SH |
341 | &id_priv->id.port_num, NULL); |
342 | if (!ret) { | |
c8f6a362 SH |
343 | ret = cma_set_qkey(cma_dev->device, |
344 | id_priv->id.port_num, | |
345 | id_priv->id.ps, dev_addr, | |
346 | &id_priv->qkey); | |
347 | if (!ret) | |
348 | cma_attach_to_dev(id_priv, cma_dev); | |
e51060f0 SH |
349 | break; |
350 | } | |
351 | } | |
e51060f0 SH |
352 | return ret; |
353 | } | |
354 | ||
e51060f0 SH |
355 | static void cma_deref_id(struct rdma_id_private *id_priv) |
356 | { | |
357 | if (atomic_dec_and_test(&id_priv->refcount)) | |
358 | complete(&id_priv->comp); | |
359 | } | |
360 | ||
de910bd9 | 361 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
8aa08602 SH |
362 | enum cma_state state) |
363 | { | |
de910bd9 OG |
364 | mutex_lock(&id_priv->handler_mutex); |
365 | if (id_priv->state != state) { | |
366 | mutex_unlock(&id_priv->handler_mutex); | |
367 | return -EINVAL; | |
368 | } | |
369 | return 0; | |
e51060f0 SH |
370 | } |
371 | ||
6c719f5c SH |
372 | static int cma_has_cm_dev(struct rdma_id_private *id_priv) |
373 | { | |
374 | return (id_priv->id.device && id_priv->cm_id.ib); | |
375 | } | |
376 | ||
e51060f0 SH |
377 | struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, |
378 | void *context, enum rdma_port_space ps) | |
379 | { | |
380 | struct rdma_id_private *id_priv; | |
381 | ||
382 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
383 | if (!id_priv) | |
384 | return ERR_PTR(-ENOMEM); | |
385 | ||
386 | id_priv->state = CMA_IDLE; | |
387 | id_priv->id.context = context; | |
388 | id_priv->id.event_handler = event_handler; | |
389 | id_priv->id.ps = ps; | |
390 | spin_lock_init(&id_priv->lock); | |
c5483388 | 391 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
392 | init_completion(&id_priv->comp); |
393 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 394 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 395 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 396 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 SH |
397 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
398 | ||
399 | return &id_priv->id; | |
400 | } | |
401 | EXPORT_SYMBOL(rdma_create_id); | |
402 | ||
c8f6a362 | 403 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
404 | { |
405 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 406 | int qp_attr_mask, ret; |
e51060f0 | 407 | |
c8f6a362 SH |
408 | qp_attr.qp_state = IB_QPS_INIT; |
409 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
410 | if (ret) |
411 | return ret; | |
412 | ||
c8f6a362 SH |
413 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
414 | if (ret) | |
415 | return ret; | |
416 | ||
417 | qp_attr.qp_state = IB_QPS_RTR; | |
418 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
419 | if (ret) | |
420 | return ret; | |
421 | ||
422 | qp_attr.qp_state = IB_QPS_RTS; | |
423 | qp_attr.sq_psn = 0; | |
424 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
425 | ||
426 | return ret; | |
e51060f0 SH |
427 | } |
428 | ||
c8f6a362 | 429 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
430 | { |
431 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 432 | int qp_attr_mask, ret; |
07ebafba TT |
433 | |
434 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
435 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
436 | if (ret) | |
437 | return ret; | |
07ebafba | 438 | |
c8f6a362 | 439 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
440 | } |
441 | ||
e51060f0 SH |
442 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
443 | struct ib_qp_init_attr *qp_init_attr) | |
444 | { | |
445 | struct rdma_id_private *id_priv; | |
446 | struct ib_qp *qp; | |
447 | int ret; | |
448 | ||
449 | id_priv = container_of(id, struct rdma_id_private, id); | |
450 | if (id->device != pd->device) | |
451 | return -EINVAL; | |
452 | ||
453 | qp = ib_create_qp(pd, qp_init_attr); | |
454 | if (IS_ERR(qp)) | |
455 | return PTR_ERR(qp); | |
456 | ||
c8f6a362 SH |
457 | if (cma_is_ud_ps(id_priv->id.ps)) |
458 | ret = cma_init_ud_qp(id_priv, qp); | |
459 | else | |
460 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
461 | if (ret) |
462 | goto err; | |
463 | ||
464 | id->qp = qp; | |
465 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
466 | id_priv->srq = (qp->srq != NULL); |
467 | return 0; | |
468 | err: | |
469 | ib_destroy_qp(qp); | |
470 | return ret; | |
471 | } | |
472 | EXPORT_SYMBOL(rdma_create_qp); | |
473 | ||
474 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
475 | { | |
c5483388 SH |
476 | struct rdma_id_private *id_priv; |
477 | ||
478 | id_priv = container_of(id, struct rdma_id_private, id); | |
479 | mutex_lock(&id_priv->qp_mutex); | |
480 | ib_destroy_qp(id_priv->id.qp); | |
481 | id_priv->id.qp = NULL; | |
482 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
483 | } |
484 | EXPORT_SYMBOL(rdma_destroy_qp); | |
485 | ||
5851bb89 SH |
486 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
487 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
488 | { |
489 | struct ib_qp_attr qp_attr; | |
490 | int qp_attr_mask, ret; | |
491 | ||
c5483388 SH |
492 | mutex_lock(&id_priv->qp_mutex); |
493 | if (!id_priv->id.qp) { | |
494 | ret = 0; | |
495 | goto out; | |
496 | } | |
e51060f0 SH |
497 | |
498 | /* Need to update QP attributes from default values. */ | |
499 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 500 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 501 | if (ret) |
c5483388 | 502 | goto out; |
e51060f0 | 503 | |
c5483388 | 504 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 505 | if (ret) |
c5483388 | 506 | goto out; |
e51060f0 SH |
507 | |
508 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 509 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 510 | if (ret) |
c5483388 | 511 | goto out; |
e51060f0 | 512 | |
5851bb89 SH |
513 | if (conn_param) |
514 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
515 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
516 | out: | |
517 | mutex_unlock(&id_priv->qp_mutex); | |
518 | return ret; | |
e51060f0 SH |
519 | } |
520 | ||
5851bb89 SH |
521 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
522 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
523 | { |
524 | struct ib_qp_attr qp_attr; | |
525 | int qp_attr_mask, ret; | |
526 | ||
c5483388 SH |
527 | mutex_lock(&id_priv->qp_mutex); |
528 | if (!id_priv->id.qp) { | |
529 | ret = 0; | |
530 | goto out; | |
531 | } | |
e51060f0 SH |
532 | |
533 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 534 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 535 | if (ret) |
c5483388 | 536 | goto out; |
e51060f0 | 537 | |
5851bb89 SH |
538 | if (conn_param) |
539 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
540 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
541 | out: | |
542 | mutex_unlock(&id_priv->qp_mutex); | |
543 | return ret; | |
e51060f0 SH |
544 | } |
545 | ||
c5483388 | 546 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
547 | { |
548 | struct ib_qp_attr qp_attr; | |
c5483388 | 549 | int ret; |
e51060f0 | 550 | |
c5483388 SH |
551 | mutex_lock(&id_priv->qp_mutex); |
552 | if (!id_priv->id.qp) { | |
553 | ret = 0; | |
554 | goto out; | |
555 | } | |
e51060f0 SH |
556 | |
557 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
558 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
559 | out: | |
560 | mutex_unlock(&id_priv->qp_mutex); | |
561 | return ret; | |
e51060f0 SH |
562 | } |
563 | ||
c8f6a362 SH |
564 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
565 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
566 | { | |
567 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
568 | int ret; | |
569 | ||
570 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
571 | ib_addr_get_pkey(dev_addr), | |
572 | &qp_attr->pkey_index); | |
573 | if (ret) | |
574 | return ret; | |
575 | ||
576 | qp_attr->port_num = id_priv->id.port_num; | |
577 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
578 | ||
579 | if (cma_is_ud_ps(id_priv->id.ps)) { | |
580 | qp_attr->qkey = id_priv->qkey; | |
581 | *qp_attr_mask |= IB_QP_QKEY; | |
582 | } else { | |
583 | qp_attr->qp_access_flags = 0; | |
584 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
585 | } | |
586 | return 0; | |
587 | } | |
588 | ||
e51060f0 SH |
589 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
590 | int *qp_attr_mask) | |
591 | { | |
592 | struct rdma_id_private *id_priv; | |
c8f6a362 | 593 | int ret = 0; |
e51060f0 SH |
594 | |
595 | id_priv = container_of(id, struct rdma_id_private, id); | |
07ebafba TT |
596 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
597 | case RDMA_TRANSPORT_IB: | |
c8f6a362 SH |
598 | if (!id_priv->cm_id.ib || cma_is_ud_ps(id_priv->id.ps)) |
599 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); | |
600 | else | |
601 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
602 | qp_attr_mask); | |
e51060f0 SH |
603 | if (qp_attr->qp_state == IB_QPS_RTR) |
604 | qp_attr->rq_psn = id_priv->seq_num; | |
605 | break; | |
07ebafba | 606 | case RDMA_TRANSPORT_IWARP: |
c8f6a362 | 607 | if (!id_priv->cm_id.iw) { |
8f076531 | 608 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
609 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
610 | } else | |
611 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
612 | qp_attr_mask); | |
07ebafba | 613 | break; |
e51060f0 SH |
614 | default: |
615 | ret = -ENOSYS; | |
616 | break; | |
617 | } | |
618 | ||
619 | return ret; | |
620 | } | |
621 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
622 | ||
623 | static inline int cma_zero_addr(struct sockaddr *addr) | |
624 | { | |
625 | struct in6_addr *ip6; | |
626 | ||
627 | if (addr->sa_family == AF_INET) | |
6360a02a JP |
628 | return ipv4_is_zeronet( |
629 | ((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
e51060f0 SH |
630 | else { |
631 | ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; | |
632 | return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | | |
5fd571cb | 633 | ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; |
e51060f0 SH |
634 | } |
635 | } | |
636 | ||
637 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
638 | { | |
6360a02a | 639 | return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr); |
e51060f0 SH |
640 | } |
641 | ||
642 | static inline int cma_any_addr(struct sockaddr *addr) | |
643 | { | |
644 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
645 | } | |
646 | ||
628e5f6d SH |
647 | static inline __be16 cma_port(struct sockaddr *addr) |
648 | { | |
649 | if (addr->sa_family == AF_INET) | |
650 | return ((struct sockaddr_in *) addr)->sin_port; | |
651 | else | |
652 | return ((struct sockaddr_in6 *) addr)->sin6_port; | |
653 | } | |
654 | ||
e51060f0 SH |
655 | static inline int cma_any_port(struct sockaddr *addr) |
656 | { | |
628e5f6d | 657 | return !cma_port(addr); |
e51060f0 SH |
658 | } |
659 | ||
660 | static int cma_get_net_info(void *hdr, enum rdma_port_space ps, | |
1b90c137 | 661 | u8 *ip_ver, __be16 *port, |
e51060f0 SH |
662 | union cma_ip_addr **src, union cma_ip_addr **dst) |
663 | { | |
664 | switch (ps) { | |
665 | case RDMA_PS_SDP: | |
666 | if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) != | |
667 | SDP_MAJ_VERSION) | |
668 | return -EINVAL; | |
669 | ||
670 | *ip_ver = sdp_get_ip_ver(hdr); | |
671 | *port = ((struct sdp_hh *) hdr)->port; | |
672 | *src = &((struct sdp_hh *) hdr)->src_addr; | |
673 | *dst = &((struct sdp_hh *) hdr)->dst_addr; | |
674 | break; | |
675 | default: | |
676 | if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION) | |
677 | return -EINVAL; | |
678 | ||
679 | *ip_ver = cma_get_ip_ver(hdr); | |
680 | *port = ((struct cma_hdr *) hdr)->port; | |
681 | *src = &((struct cma_hdr *) hdr)->src_addr; | |
682 | *dst = &((struct cma_hdr *) hdr)->dst_addr; | |
683 | break; | |
684 | } | |
685 | ||
686 | if (*ip_ver != 4 && *ip_ver != 6) | |
687 | return -EINVAL; | |
688 | return 0; | |
689 | } | |
690 | ||
691 | static void cma_save_net_info(struct rdma_addr *addr, | |
692 | struct rdma_addr *listen_addr, | |
1b90c137 | 693 | u8 ip_ver, __be16 port, |
e51060f0 SH |
694 | union cma_ip_addr *src, union cma_ip_addr *dst) |
695 | { | |
696 | struct sockaddr_in *listen4, *ip4; | |
697 | struct sockaddr_in6 *listen6, *ip6; | |
698 | ||
699 | switch (ip_ver) { | |
700 | case 4: | |
701 | listen4 = (struct sockaddr_in *) &listen_addr->src_addr; | |
702 | ip4 = (struct sockaddr_in *) &addr->src_addr; | |
703 | ip4->sin_family = listen4->sin_family; | |
704 | ip4->sin_addr.s_addr = dst->ip4.addr; | |
705 | ip4->sin_port = listen4->sin_port; | |
706 | ||
707 | ip4 = (struct sockaddr_in *) &addr->dst_addr; | |
708 | ip4->sin_family = listen4->sin_family; | |
709 | ip4->sin_addr.s_addr = src->ip4.addr; | |
710 | ip4->sin_port = port; | |
711 | break; | |
712 | case 6: | |
713 | listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr; | |
714 | ip6 = (struct sockaddr_in6 *) &addr->src_addr; | |
715 | ip6->sin6_family = listen6->sin6_family; | |
716 | ip6->sin6_addr = dst->ip6; | |
717 | ip6->sin6_port = listen6->sin6_port; | |
718 | ||
719 | ip6 = (struct sockaddr_in6 *) &addr->dst_addr; | |
720 | ip6->sin6_family = listen6->sin6_family; | |
721 | ip6->sin6_addr = src->ip6; | |
722 | ip6->sin6_port = port; | |
723 | break; | |
724 | default: | |
725 | break; | |
726 | } | |
727 | } | |
728 | ||
729 | static inline int cma_user_data_offset(enum rdma_port_space ps) | |
730 | { | |
731 | switch (ps) { | |
732 | case RDMA_PS_SDP: | |
733 | return 0; | |
734 | default: | |
735 | return sizeof(struct cma_hdr); | |
736 | } | |
737 | } | |
738 | ||
e51060f0 SH |
739 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
740 | { | |
07ebafba TT |
741 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
742 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
743 | if (id_priv->query) |
744 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
745 | break; | |
746 | default: | |
747 | break; | |
748 | } | |
749 | } | |
750 | ||
e51060f0 SH |
751 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
752 | { | |
753 | struct rdma_id_private *dev_id_priv; | |
754 | ||
d02d1f53 SH |
755 | /* |
756 | * Remove from listen_any_list to prevent added devices from spawning | |
757 | * additional listen requests. | |
758 | */ | |
e51060f0 SH |
759 | mutex_lock(&lock); |
760 | list_del(&id_priv->list); | |
761 | ||
762 | while (!list_empty(&id_priv->listen_list)) { | |
763 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
764 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
765 | /* sync with device removal to avoid duplicate destruction */ |
766 | list_del_init(&dev_id_priv->list); | |
767 | list_del(&dev_id_priv->listen_list); | |
768 | mutex_unlock(&lock); | |
769 | ||
770 | rdma_destroy_id(&dev_id_priv->id); | |
771 | mutex_lock(&lock); | |
e51060f0 SH |
772 | } |
773 | mutex_unlock(&lock); | |
774 | } | |
775 | ||
776 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
777 | enum cma_state state) | |
778 | { | |
779 | switch (state) { | |
780 | case CMA_ADDR_QUERY: | |
781 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); | |
782 | break; | |
783 | case CMA_ROUTE_QUERY: | |
784 | cma_cancel_route(id_priv); | |
785 | break; | |
786 | case CMA_LISTEN: | |
3f446754 RD |
787 | if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr) |
788 | && !id_priv->cma_dev) | |
e51060f0 SH |
789 | cma_cancel_listens(id_priv); |
790 | break; | |
791 | default: | |
792 | break; | |
793 | } | |
794 | } | |
795 | ||
796 | static void cma_release_port(struct rdma_id_private *id_priv) | |
797 | { | |
798 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
799 | ||
800 | if (!bind_list) | |
801 | return; | |
802 | ||
803 | mutex_lock(&lock); | |
804 | hlist_del(&id_priv->node); | |
805 | if (hlist_empty(&bind_list->owners)) { | |
806 | idr_remove(bind_list->ps, bind_list->port); | |
807 | kfree(bind_list); | |
808 | } | |
809 | mutex_unlock(&lock); | |
810 | } | |
811 | ||
c8f6a362 SH |
812 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
813 | { | |
814 | struct cma_multicast *mc; | |
815 | ||
816 | while (!list_empty(&id_priv->mc_list)) { | |
817 | mc = container_of(id_priv->mc_list.next, | |
818 | struct cma_multicast, list); | |
819 | list_del(&mc->list); | |
820 | ib_sa_free_multicast(mc->multicast.ib); | |
821 | kfree(mc); | |
822 | } | |
823 | } | |
824 | ||
e51060f0 SH |
825 | void rdma_destroy_id(struct rdma_cm_id *id) |
826 | { | |
827 | struct rdma_id_private *id_priv; | |
828 | enum cma_state state; | |
829 | ||
830 | id_priv = container_of(id, struct rdma_id_private, id); | |
831 | state = cma_exch(id_priv, CMA_DESTROYING); | |
832 | cma_cancel_operation(id_priv, state); | |
833 | ||
61a73c70 | 834 | mutex_lock(&lock); |
e51060f0 | 835 | if (id_priv->cma_dev) { |
61a73c70 | 836 | mutex_unlock(&lock); |
07ebafba TT |
837 | switch (rdma_node_get_transport(id->device->node_type)) { |
838 | case RDMA_TRANSPORT_IB: | |
3cd96564 | 839 | if (id_priv->cm_id.ib && !IS_ERR(id_priv->cm_id.ib)) |
e51060f0 SH |
840 | ib_destroy_cm_id(id_priv->cm_id.ib); |
841 | break; | |
07ebafba TT |
842 | case RDMA_TRANSPORT_IWARP: |
843 | if (id_priv->cm_id.iw && !IS_ERR(id_priv->cm_id.iw)) | |
844 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
845 | break; | |
e51060f0 SH |
846 | default: |
847 | break; | |
848 | } | |
c8f6a362 | 849 | cma_leave_mc_groups(id_priv); |
3cd96564 | 850 | mutex_lock(&lock); |
e51060f0 | 851 | cma_detach_from_dev(id_priv); |
e51060f0 | 852 | } |
61a73c70 | 853 | mutex_unlock(&lock); |
e51060f0 SH |
854 | |
855 | cma_release_port(id_priv); | |
856 | cma_deref_id(id_priv); | |
857 | wait_for_completion(&id_priv->comp); | |
858 | ||
d02d1f53 SH |
859 | if (id_priv->internal_id) |
860 | cma_deref_id(id_priv->id.context); | |
861 | ||
e51060f0 SH |
862 | kfree(id_priv->id.route.path_rec); |
863 | kfree(id_priv); | |
864 | } | |
865 | EXPORT_SYMBOL(rdma_destroy_id); | |
866 | ||
867 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
868 | { | |
869 | int ret; | |
870 | ||
5851bb89 | 871 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
872 | if (ret) |
873 | goto reject; | |
874 | ||
5851bb89 | 875 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
876 | if (ret) |
877 | goto reject; | |
878 | ||
879 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
880 | if (ret) | |
881 | goto reject; | |
882 | ||
883 | return 0; | |
884 | reject: | |
c5483388 | 885 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
886 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
887 | NULL, 0, NULL, 0); | |
888 | return ret; | |
889 | } | |
890 | ||
891 | static int cma_verify_rep(struct rdma_id_private *id_priv, void *data) | |
892 | { | |
893 | if (id_priv->id.ps == RDMA_PS_SDP && | |
894 | sdp_get_majv(((struct sdp_hah *) data)->sdp_version) != | |
895 | SDP_MAJ_VERSION) | |
896 | return -EINVAL; | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
a1b1b61f SH |
901 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
902 | struct ib_cm_rep_event_param *rep_data, | |
903 | void *private_data) | |
904 | { | |
905 | event->param.conn.private_data = private_data; | |
906 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
907 | event->param.conn.responder_resources = rep_data->responder_resources; | |
908 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
909 | event->param.conn.flow_control = rep_data->flow_control; | |
910 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
911 | event->param.conn.srq = rep_data->srq; | |
912 | event->param.conn.qp_num = rep_data->remote_qpn; | |
913 | } | |
914 | ||
e51060f0 SH |
915 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
916 | { | |
917 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
918 | struct rdma_cm_event event; |
919 | int ret = 0; | |
e51060f0 | 920 | |
38ca83a5 AV |
921 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
922 | cma_disable_callback(id_priv, CMA_CONNECT)) || | |
923 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && | |
924 | cma_disable_callback(id_priv, CMA_DISCONNECT))) | |
8aa08602 | 925 | return 0; |
e51060f0 | 926 | |
a1b1b61f | 927 | memset(&event, 0, sizeof event); |
e51060f0 SH |
928 | switch (ib_event->event) { |
929 | case IB_CM_REQ_ERROR: | |
930 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
931 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
932 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
933 | break; |
934 | case IB_CM_REP_RECEIVED: | |
a1b1b61f SH |
935 | event.status = cma_verify_rep(id_priv, ib_event->private_data); |
936 | if (event.status) | |
937 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
e51060f0 | 938 | else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) { |
a1b1b61f SH |
939 | event.status = cma_rep_recv(id_priv); |
940 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
941 | RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 | 942 | } else |
a1b1b61f SH |
943 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
944 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, | |
945 | ib_event->private_data); | |
e51060f0 SH |
946 | break; |
947 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
948 | case IB_CM_USER_ESTABLISHED: |
949 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
950 | break; |
951 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 952 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
953 | case IB_CM_DREQ_RECEIVED: |
954 | case IB_CM_DREP_RECEIVED: | |
955 | if (!cma_comp_exch(id_priv, CMA_CONNECT, CMA_DISCONNECT)) | |
956 | goto out; | |
a1b1b61f | 957 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
958 | break; |
959 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
960 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
961 | break; | |
e51060f0 SH |
962 | case IB_CM_MRA_RECEIVED: |
963 | /* ignore event */ | |
964 | goto out; | |
965 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 966 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
967 | event.status = ib_event->param.rej_rcvd.reason; |
968 | event.event = RDMA_CM_EVENT_REJECTED; | |
969 | event.param.conn.private_data = ib_event->private_data; | |
970 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
971 | break; |
972 | default: | |
468f2239 | 973 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
974 | ib_event->event); |
975 | goto out; | |
976 | } | |
977 | ||
a1b1b61f | 978 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
979 | if (ret) { |
980 | /* Destroy the CM ID by returning a non-zero value. */ | |
981 | id_priv->cm_id.ib = NULL; | |
982 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 983 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
984 | rdma_destroy_id(&id_priv->id); |
985 | return ret; | |
986 | } | |
987 | out: | |
de910bd9 | 988 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
989 | return ret; |
990 | } | |
991 | ||
628e5f6d SH |
992 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
993 | struct ib_cm_event *ib_event) | |
e51060f0 SH |
994 | { |
995 | struct rdma_id_private *id_priv; | |
996 | struct rdma_cm_id *id; | |
997 | struct rdma_route *rt; | |
998 | union cma_ip_addr *src, *dst; | |
1b90c137 | 999 | __be16 port; |
e51060f0 | 1000 | u8 ip_ver; |
64c5e613 | 1001 | int ret; |
e51060f0 | 1002 | |
3f168d2b KK |
1003 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1004 | &ip_ver, &port, &src, &dst)) | |
1005 | goto err; | |
1006 | ||
e51060f0 SH |
1007 | id = rdma_create_id(listen_id->event_handler, listen_id->context, |
1008 | listen_id->ps); | |
1009 | if (IS_ERR(id)) | |
3f168d2b KK |
1010 | goto err; |
1011 | ||
1012 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1013 | ip_ver, port, src, dst); | |
e51060f0 SH |
1014 | |
1015 | rt = &id->route; | |
1016 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1017 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1018 | GFP_KERNEL); | |
e51060f0 | 1019 | if (!rt->path_rec) |
3f168d2b | 1020 | goto destroy_id; |
e51060f0 | 1021 | |
e51060f0 SH |
1022 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1023 | if (rt->num_paths == 2) | |
1024 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1025 | ||
e51060f0 | 1026 | ib_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); |
3f446754 | 1027 | ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr, |
64c5e613 OG |
1028 | &id->route.addr.dev_addr); |
1029 | if (ret) | |
1030 | goto destroy_id; | |
e51060f0 SH |
1031 | |
1032 | id_priv = container_of(id, struct rdma_id_private, id); | |
1033 | id_priv->state = CMA_CONNECT; | |
1034 | return id_priv; | |
3f168d2b KK |
1035 | |
1036 | destroy_id: | |
e51060f0 | 1037 | rdma_destroy_id(id); |
3f168d2b | 1038 | err: |
e51060f0 SH |
1039 | return NULL; |
1040 | } | |
1041 | ||
628e5f6d SH |
1042 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
1043 | struct ib_cm_event *ib_event) | |
1044 | { | |
1045 | struct rdma_id_private *id_priv; | |
1046 | struct rdma_cm_id *id; | |
1047 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1048 | __be16 port; |
628e5f6d SH |
1049 | u8 ip_ver; |
1050 | int ret; | |
1051 | ||
1052 | id = rdma_create_id(listen_id->event_handler, listen_id->context, | |
1053 | listen_id->ps); | |
1054 | if (IS_ERR(id)) | |
1055 | return NULL; | |
1056 | ||
1057 | ||
1058 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, | |
1059 | &ip_ver, &port, &src, &dst)) | |
1060 | goto err; | |
1061 | ||
1062 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1063 | ip_ver, port, src, dst); | |
1064 | ||
3f446754 | 1065 | ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr, |
628e5f6d SH |
1066 | &id->route.addr.dev_addr); |
1067 | if (ret) | |
1068 | goto err; | |
1069 | ||
1070 | id_priv = container_of(id, struct rdma_id_private, id); | |
1071 | id_priv->state = CMA_CONNECT; | |
1072 | return id_priv; | |
1073 | err: | |
1074 | rdma_destroy_id(id); | |
1075 | return NULL; | |
1076 | } | |
1077 | ||
a1b1b61f SH |
1078 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1079 | struct ib_cm_req_event_param *req_data, | |
1080 | void *private_data, int offset) | |
1081 | { | |
1082 | event->param.conn.private_data = private_data + offset; | |
1083 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1084 | event->param.conn.responder_resources = req_data->responder_resources; | |
1085 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1086 | event->param.conn.flow_control = req_data->flow_control; | |
1087 | event->param.conn.retry_count = req_data->retry_count; | |
1088 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1089 | event->param.conn.srq = req_data->srq; | |
1090 | event->param.conn.qp_num = req_data->remote_qpn; | |
1091 | } | |
1092 | ||
e51060f0 SH |
1093 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1094 | { | |
1095 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1096 | struct rdma_cm_event event; |
e51060f0 SH |
1097 | int offset, ret; |
1098 | ||
1099 | listen_id = cm_id->context; | |
de910bd9 | 1100 | if (cma_disable_callback(listen_id, CMA_LISTEN)) |
8aa08602 | 1101 | return -ECONNABORTED; |
e51060f0 | 1102 | |
628e5f6d SH |
1103 | memset(&event, 0, sizeof event); |
1104 | offset = cma_user_data_offset(listen_id->id.ps); | |
1105 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
c8f6a362 | 1106 | if (cma_is_ud_ps(listen_id->id.ps)) { |
628e5f6d SH |
1107 | conn_id = cma_new_udp_id(&listen_id->id, ib_event); |
1108 | event.param.ud.private_data = ib_event->private_data + offset; | |
1109 | event.param.ud.private_data_len = | |
1110 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1111 | } else { | |
1112 | conn_id = cma_new_conn_id(&listen_id->id, ib_event); | |
1113 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, | |
1114 | ib_event->private_data, offset); | |
1115 | } | |
e51060f0 SH |
1116 | if (!conn_id) { |
1117 | ret = -ENOMEM; | |
1118 | goto out; | |
1119 | } | |
1120 | ||
de910bd9 | 1121 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
61a73c70 | 1122 | mutex_lock(&lock); |
07ebafba | 1123 | ret = cma_acquire_dev(conn_id); |
61a73c70 | 1124 | mutex_unlock(&lock); |
a1a733f6 KK |
1125 | if (ret) |
1126 | goto release_conn_id; | |
e51060f0 SH |
1127 | |
1128 | conn_id->cm_id.ib = cm_id; | |
1129 | cm_id->context = conn_id; | |
1130 | cm_id->cm_handler = cma_ib_handler; | |
1131 | ||
a1b1b61f | 1132 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
45d9478d | 1133 | if (!ret) { |
ead595ae SH |
1134 | /* |
1135 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1136 | * while we're accessing the cm_id. | |
1137 | */ | |
1138 | mutex_lock(&lock); | |
1139 | if (cma_comp(conn_id, CMA_CONNECT) && | |
1140 | !cma_is_ud_ps(conn_id->id.ps)) | |
1141 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); | |
1142 | mutex_unlock(&lock); | |
de910bd9 | 1143 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 | 1144 | goto out; |
45d9478d | 1145 | } |
a1a733f6 KK |
1146 | |
1147 | /* Destroy the CM ID by returning a non-zero value. */ | |
1148 | conn_id->cm_id.ib = NULL; | |
1149 | ||
1150 | release_conn_id: | |
1151 | cma_exch(conn_id, CMA_DESTROYING); | |
de910bd9 | 1152 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 KK |
1153 | rdma_destroy_id(&conn_id->id); |
1154 | ||
e51060f0 | 1155 | out: |
de910bd9 | 1156 | mutex_unlock(&listen_id->handler_mutex); |
e51060f0 SH |
1157 | return ret; |
1158 | } | |
1159 | ||
1160 | static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr) | |
1161 | { | |
628e5f6d | 1162 | return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 SH |
1163 | } |
1164 | ||
1165 | static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr, | |
1166 | struct ib_cm_compare_data *compare) | |
1167 | { | |
1168 | struct cma_hdr *cma_data, *cma_mask; | |
1169 | struct sdp_hh *sdp_data, *sdp_mask; | |
1b90c137 | 1170 | __be32 ip4_addr; |
e51060f0 SH |
1171 | struct in6_addr ip6_addr; |
1172 | ||
1173 | memset(compare, 0, sizeof *compare); | |
1174 | cma_data = (void *) compare->data; | |
1175 | cma_mask = (void *) compare->mask; | |
1176 | sdp_data = (void *) compare->data; | |
1177 | sdp_mask = (void *) compare->mask; | |
1178 | ||
1179 | switch (addr->sa_family) { | |
1180 | case AF_INET: | |
1181 | ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | |
1182 | if (ps == RDMA_PS_SDP) { | |
1183 | sdp_set_ip_ver(sdp_data, 4); | |
1184 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1185 | sdp_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1186 | sdp_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1187 | } else { |
1188 | cma_set_ip_ver(cma_data, 4); | |
1189 | cma_set_ip_ver(cma_mask, 0xF); | |
1190 | cma_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1191 | cma_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1192 | } |
1193 | break; | |
1194 | case AF_INET6: | |
1195 | ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr; | |
1196 | if (ps == RDMA_PS_SDP) { | |
1197 | sdp_set_ip_ver(sdp_data, 6); | |
1198 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1199 | sdp_data->dst_addr.ip6 = ip6_addr; | |
1200 | memset(&sdp_mask->dst_addr.ip6, 0xFF, | |
1201 | sizeof sdp_mask->dst_addr.ip6); | |
1202 | } else { | |
1203 | cma_set_ip_ver(cma_data, 6); | |
1204 | cma_set_ip_ver(cma_mask, 0xF); | |
1205 | cma_data->dst_addr.ip6 = ip6_addr; | |
1206 | memset(&cma_mask->dst_addr.ip6, 0xFF, | |
1207 | sizeof cma_mask->dst_addr.ip6); | |
1208 | } | |
1209 | break; | |
1210 | default: | |
1211 | break; | |
1212 | } | |
1213 | } | |
1214 | ||
07ebafba TT |
1215 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1216 | { | |
1217 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1218 | struct rdma_cm_event event; |
07ebafba TT |
1219 | struct sockaddr_in *sin; |
1220 | int ret = 0; | |
1221 | ||
de910bd9 | 1222 | if (cma_disable_callback(id_priv, CMA_CONNECT)) |
be65f086 | 1223 | return 0; |
07ebafba | 1224 | |
be65f086 | 1225 | memset(&event, 0, sizeof event); |
07ebafba TT |
1226 | switch (iw_event->event) { |
1227 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1228 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1229 | break; |
1230 | case IW_CM_EVENT_CONNECT_REPLY: | |
1231 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1232 | *sin = iw_event->local_addr; | |
1233 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.dst_addr; | |
1234 | *sin = iw_event->remote_addr; | |
881a045f SW |
1235 | switch (iw_event->status) { |
1236 | case 0: | |
a1b1b61f | 1237 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
881a045f SW |
1238 | break; |
1239 | case -ECONNRESET: | |
1240 | case -ECONNREFUSED: | |
1241 | event.event = RDMA_CM_EVENT_REJECTED; | |
1242 | break; | |
1243 | case -ETIMEDOUT: | |
1244 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1245 | break; | |
1246 | default: | |
1247 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1248 | break; | |
1249 | } | |
07ebafba TT |
1250 | break; |
1251 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1252 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
07ebafba TT |
1253 | break; |
1254 | default: | |
1255 | BUG_ON(1); | |
1256 | } | |
1257 | ||
a1b1b61f SH |
1258 | event.status = iw_event->status; |
1259 | event.param.conn.private_data = iw_event->private_data; | |
1260 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1261 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1262 | if (ret) { |
1263 | /* Destroy the CM ID by returning a non-zero value. */ | |
1264 | id_priv->cm_id.iw = NULL; | |
1265 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 1266 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1267 | rdma_destroy_id(&id_priv->id); |
1268 | return ret; | |
1269 | } | |
1270 | ||
de910bd9 | 1271 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1272 | return ret; |
1273 | } | |
1274 | ||
1275 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1276 | struct iw_cm_event *iw_event) | |
1277 | { | |
1278 | struct rdma_cm_id *new_cm_id; | |
1279 | struct rdma_id_private *listen_id, *conn_id; | |
1280 | struct sockaddr_in *sin; | |
1281 | struct net_device *dev = NULL; | |
a1b1b61f | 1282 | struct rdma_cm_event event; |
07ebafba | 1283 | int ret; |
8d8293cf | 1284 | struct ib_device_attr attr; |
07ebafba TT |
1285 | |
1286 | listen_id = cm_id->context; | |
de910bd9 | 1287 | if (cma_disable_callback(listen_id, CMA_LISTEN)) |
8aa08602 | 1288 | return -ECONNABORTED; |
07ebafba TT |
1289 | |
1290 | /* Create a new RDMA id for the new IW CM ID */ | |
1291 | new_cm_id = rdma_create_id(listen_id->id.event_handler, | |
1292 | listen_id->id.context, | |
1293 | RDMA_PS_TCP); | |
10f32065 | 1294 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1295 | ret = -ENOMEM; |
1296 | goto out; | |
1297 | } | |
1298 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1299 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
07ebafba TT |
1300 | conn_id->state = CMA_CONNECT; |
1301 | ||
1ab35276 | 1302 | dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr); |
07ebafba TT |
1303 | if (!dev) { |
1304 | ret = -EADDRNOTAVAIL; | |
de910bd9 | 1305 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1306 | rdma_destroy_id(new_cm_id); |
1307 | goto out; | |
1308 | } | |
1309 | ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL); | |
1310 | if (ret) { | |
de910bd9 | 1311 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1312 | rdma_destroy_id(new_cm_id); |
1313 | goto out; | |
1314 | } | |
1315 | ||
61a73c70 | 1316 | mutex_lock(&lock); |
07ebafba | 1317 | ret = cma_acquire_dev(conn_id); |
61a73c70 | 1318 | mutex_unlock(&lock); |
07ebafba | 1319 | if (ret) { |
de910bd9 | 1320 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1321 | rdma_destroy_id(new_cm_id); |
1322 | goto out; | |
1323 | } | |
1324 | ||
1325 | conn_id->cm_id.iw = cm_id; | |
1326 | cm_id->context = conn_id; | |
1327 | cm_id->cm_handler = cma_iw_handler; | |
1328 | ||
1329 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.src_addr; | |
1330 | *sin = iw_event->local_addr; | |
1331 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr; | |
1332 | *sin = iw_event->remote_addr; | |
1333 | ||
8d8293cf SW |
1334 | ret = ib_query_device(conn_id->id.device, &attr); |
1335 | if (ret) { | |
de910bd9 | 1336 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1337 | rdma_destroy_id(new_cm_id); |
1338 | goto out; | |
1339 | } | |
1340 | ||
a1b1b61f SH |
1341 | memset(&event, 0, sizeof event); |
1342 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1343 | event.param.conn.private_data = iw_event->private_data; | |
1344 | event.param.conn.private_data_len = iw_event->private_data_len; | |
8d8293cf SW |
1345 | event.param.conn.initiator_depth = attr.max_qp_init_rd_atom; |
1346 | event.param.conn.responder_resources = attr.max_qp_rd_atom; | |
a1b1b61f | 1347 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1348 | if (ret) { |
1349 | /* User wants to destroy the CM ID */ | |
1350 | conn_id->cm_id.iw = NULL; | |
1351 | cma_exch(conn_id, CMA_DESTROYING); | |
de910bd9 | 1352 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba | 1353 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1354 | goto out; |
07ebafba TT |
1355 | } |
1356 | ||
de910bd9 OG |
1357 | mutex_unlock(&conn_id->handler_mutex); |
1358 | ||
07ebafba TT |
1359 | out: |
1360 | if (dev) | |
1361 | dev_put(dev); | |
de910bd9 | 1362 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1363 | return ret; |
1364 | } | |
1365 | ||
e51060f0 SH |
1366 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1367 | { | |
1368 | struct ib_cm_compare_data compare_data; | |
1369 | struct sockaddr *addr; | |
1370 | __be64 svc_id; | |
1371 | int ret; | |
1372 | ||
1373 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, cma_req_handler, | |
1374 | id_priv); | |
1375 | if (IS_ERR(id_priv->cm_id.ib)) | |
1376 | return PTR_ERR(id_priv->cm_id.ib); | |
1377 | ||
3f446754 | 1378 | addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
e51060f0 SH |
1379 | svc_id = cma_get_service_id(id_priv->id.ps, addr); |
1380 | if (cma_any_addr(addr)) | |
1381 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL); | |
1382 | else { | |
1383 | cma_set_compare_data(id_priv->id.ps, addr, &compare_data); | |
1384 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, &compare_data); | |
1385 | } | |
1386 | ||
1387 | if (ret) { | |
1388 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
1389 | id_priv->cm_id.ib = NULL; | |
1390 | } | |
1391 | ||
1392 | return ret; | |
1393 | } | |
1394 | ||
07ebafba TT |
1395 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1396 | { | |
1397 | int ret; | |
1398 | struct sockaddr_in *sin; | |
1399 | ||
1400 | id_priv->cm_id.iw = iw_create_cm_id(id_priv->id.device, | |
1401 | iw_conn_req_handler, | |
1402 | id_priv); | |
1403 | if (IS_ERR(id_priv->cm_id.iw)) | |
1404 | return PTR_ERR(id_priv->cm_id.iw); | |
1405 | ||
1406 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1407 | id_priv->cm_id.iw->local_addr = *sin; | |
1408 | ||
1409 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
1410 | ||
1411 | if (ret) { | |
1412 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
1413 | id_priv->cm_id.iw = NULL; | |
1414 | } | |
1415 | ||
1416 | return ret; | |
1417 | } | |
1418 | ||
e51060f0 SH |
1419 | static int cma_listen_handler(struct rdma_cm_id *id, |
1420 | struct rdma_cm_event *event) | |
1421 | { | |
1422 | struct rdma_id_private *id_priv = id->context; | |
1423 | ||
1424 | id->context = id_priv->id.context; | |
1425 | id->event_handler = id_priv->id.event_handler; | |
1426 | return id_priv->id.event_handler(id, event); | |
1427 | } | |
1428 | ||
1429 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
1430 | struct cma_device *cma_dev) | |
1431 | { | |
1432 | struct rdma_id_private *dev_id_priv; | |
1433 | struct rdma_cm_id *id; | |
1434 | int ret; | |
1435 | ||
1436 | id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps); | |
1437 | if (IS_ERR(id)) | |
1438 | return; | |
1439 | ||
1440 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
1441 | ||
1442 | dev_id_priv->state = CMA_ADDR_BOUND; | |
1443 | memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr, | |
3f446754 | 1444 | ip_addr_size((struct sockaddr *) &id_priv->id.route.addr.src_addr)); |
e51060f0 SH |
1445 | |
1446 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
1447 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
1448 | atomic_inc(&id_priv->refcount); |
1449 | dev_id_priv->internal_id = 1; | |
e51060f0 SH |
1450 | |
1451 | ret = rdma_listen(id, id_priv->backlog); | |
1452 | if (ret) | |
d02d1f53 | 1453 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 1454 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
1455 | } |
1456 | ||
1457 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
1458 | { | |
1459 | struct cma_device *cma_dev; | |
1460 | ||
1461 | mutex_lock(&lock); | |
1462 | list_add_tail(&id_priv->list, &listen_any_list); | |
1463 | list_for_each_entry(cma_dev, &dev_list, list) | |
1464 | cma_listen_on_dev(id_priv, cma_dev); | |
1465 | mutex_unlock(&lock); | |
1466 | } | |
1467 | ||
1468 | static int cma_bind_any(struct rdma_cm_id *id, sa_family_t af) | |
1469 | { | |
1470 | struct sockaddr_in addr_in; | |
1471 | ||
1472 | memset(&addr_in, 0, sizeof addr_in); | |
1473 | addr_in.sin_family = af; | |
1474 | return rdma_bind_addr(id, (struct sockaddr *) &addr_in); | |
1475 | } | |
1476 | ||
1477 | int rdma_listen(struct rdma_cm_id *id, int backlog) | |
1478 | { | |
1479 | struct rdma_id_private *id_priv; | |
1480 | int ret; | |
1481 | ||
1482 | id_priv = container_of(id, struct rdma_id_private, id); | |
1483 | if (id_priv->state == CMA_IDLE) { | |
1484 | ret = cma_bind_any(id, AF_INET); | |
1485 | if (ret) | |
1486 | return ret; | |
1487 | } | |
1488 | ||
1489 | if (!cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_LISTEN)) | |
1490 | return -EINVAL; | |
1491 | ||
1492 | id_priv->backlog = backlog; | |
1493 | if (id->device) { | |
07ebafba TT |
1494 | switch (rdma_node_get_transport(id->device->node_type)) { |
1495 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
1496 | ret = cma_ib_listen(id_priv); |
1497 | if (ret) | |
1498 | goto err; | |
1499 | break; | |
07ebafba TT |
1500 | case RDMA_TRANSPORT_IWARP: |
1501 | ret = cma_iw_listen(id_priv, backlog); | |
1502 | if (ret) | |
1503 | goto err; | |
1504 | break; | |
e51060f0 SH |
1505 | default: |
1506 | ret = -ENOSYS; | |
1507 | goto err; | |
1508 | } | |
1509 | } else | |
1510 | cma_listen_on_all(id_priv); | |
1511 | ||
1512 | return 0; | |
1513 | err: | |
1514 | id_priv->backlog = 0; | |
1515 | cma_comp_exch(id_priv, CMA_LISTEN, CMA_ADDR_BOUND); | |
1516 | return ret; | |
1517 | } | |
1518 | EXPORT_SYMBOL(rdma_listen); | |
1519 | ||
a81c994d SH |
1520 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
1521 | { | |
1522 | struct rdma_id_private *id_priv; | |
1523 | ||
1524 | id_priv = container_of(id, struct rdma_id_private, id); | |
1525 | id_priv->tos = (u8) tos; | |
1526 | } | |
1527 | EXPORT_SYMBOL(rdma_set_service_type); | |
1528 | ||
e51060f0 SH |
1529 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
1530 | void *context) | |
1531 | { | |
1532 | struct cma_work *work = context; | |
1533 | struct rdma_route *route; | |
1534 | ||
1535 | route = &work->id->id.route; | |
1536 | ||
1537 | if (!status) { | |
1538 | route->num_paths = 1; | |
1539 | *route->path_rec = *path_rec; | |
1540 | } else { | |
1541 | work->old_state = CMA_ROUTE_QUERY; | |
1542 | work->new_state = CMA_ADDR_RESOLVED; | |
1543 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; | |
8f0472d3 | 1544 | work->event.status = status; |
e51060f0 SH |
1545 | } |
1546 | ||
1547 | queue_work(cma_wq, &work->work); | |
1548 | } | |
1549 | ||
1550 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
1551 | struct cma_work *work) | |
1552 | { | |
a81c994d | 1553 | struct rdma_addr *addr = &id_priv->id.route.addr; |
e51060f0 | 1554 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
1555 | ib_sa_comp_mask comp_mask; |
1556 | struct sockaddr_in6 *sin6; | |
e51060f0 SH |
1557 | |
1558 | memset(&path_rec, 0, sizeof path_rec); | |
a81c994d SH |
1559 | ib_addr_get_sgid(&addr->dev_addr, &path_rec.sgid); |
1560 | ib_addr_get_dgid(&addr->dev_addr, &path_rec.dgid); | |
1561 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr)); | |
e51060f0 | 1562 | path_rec.numb_path = 1; |
962063e6 | 1563 | path_rec.reversible = 1; |
3f446754 RD |
1564 | path_rec.service_id = cma_get_service_id(id_priv->id.ps, |
1565 | (struct sockaddr *) &addr->dst_addr); | |
a81c994d SH |
1566 | |
1567 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
1568 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
1569 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
1570 | ||
3f446754 | 1571 | if (addr->src_addr.ss_family == AF_INET) { |
a81c994d SH |
1572 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
1573 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
1574 | } else { | |
1575 | sin6 = (struct sockaddr_in6 *) &addr->src_addr; | |
1576 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); | |
1577 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
1578 | } | |
e51060f0 | 1579 | |
c1a0b23b | 1580 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
1581 | id_priv->id.port_num, &path_rec, |
1582 | comp_mask, timeout_ms, | |
1583 | GFP_KERNEL, cma_query_handler, | |
1584 | work, &id_priv->query); | |
e51060f0 SH |
1585 | |
1586 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
1587 | } | |
1588 | ||
c4028958 | 1589 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 1590 | { |
c4028958 | 1591 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
1592 | struct rdma_id_private *id_priv = work->id; |
1593 | int destroy = 0; | |
1594 | ||
de910bd9 | 1595 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
1596 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
1597 | goto out; | |
1598 | ||
1599 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
1600 | cma_exch(id_priv, CMA_DESTROYING); | |
1601 | destroy = 1; | |
1602 | } | |
1603 | out: | |
de910bd9 | 1604 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1605 | cma_deref_id(id_priv); |
1606 | if (destroy) | |
1607 | rdma_destroy_id(&id_priv->id); | |
1608 | kfree(work); | |
1609 | } | |
1610 | ||
dd5bdff8 OG |
1611 | static void cma_ndev_work_handler(struct work_struct *_work) |
1612 | { | |
1613 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
1614 | struct rdma_id_private *id_priv = work->id; | |
1615 | int destroy = 0; | |
1616 | ||
1617 | mutex_lock(&id_priv->handler_mutex); | |
1618 | if (id_priv->state == CMA_DESTROYING || | |
1619 | id_priv->state == CMA_DEVICE_REMOVAL) | |
1620 | goto out; | |
1621 | ||
1622 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
1623 | cma_exch(id_priv, CMA_DESTROYING); | |
1624 | destroy = 1; | |
1625 | } | |
1626 | ||
1627 | out: | |
1628 | mutex_unlock(&id_priv->handler_mutex); | |
1629 | cma_deref_id(id_priv); | |
1630 | if (destroy) | |
1631 | rdma_destroy_id(&id_priv->id); | |
1632 | kfree(work); | |
1633 | } | |
1634 | ||
e51060f0 SH |
1635 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
1636 | { | |
1637 | struct rdma_route *route = &id_priv->id.route; | |
1638 | struct cma_work *work; | |
1639 | int ret; | |
1640 | ||
1641 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1642 | if (!work) | |
1643 | return -ENOMEM; | |
1644 | ||
1645 | work->id = id_priv; | |
c4028958 | 1646 | INIT_WORK(&work->work, cma_work_handler); |
e51060f0 SH |
1647 | work->old_state = CMA_ROUTE_QUERY; |
1648 | work->new_state = CMA_ROUTE_RESOLVED; | |
1649 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
1650 | ||
1651 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1652 | if (!route->path_rec) { | |
1653 | ret = -ENOMEM; | |
1654 | goto err1; | |
1655 | } | |
1656 | ||
1657 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
1658 | if (ret) | |
1659 | goto err2; | |
1660 | ||
1661 | return 0; | |
1662 | err2: | |
1663 | kfree(route->path_rec); | |
1664 | route->path_rec = NULL; | |
1665 | err1: | |
1666 | kfree(work); | |
1667 | return ret; | |
1668 | } | |
1669 | ||
1670 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
1671 | struct ib_sa_path_rec *path_rec, int num_paths) | |
1672 | { | |
1673 | struct rdma_id_private *id_priv; | |
1674 | int ret; | |
1675 | ||
1676 | id_priv = container_of(id, struct rdma_id_private, id); | |
1677 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ROUTE_RESOLVED)) | |
1678 | return -EINVAL; | |
1679 | ||
1680 | id->route.path_rec = kmalloc(sizeof *path_rec * num_paths, GFP_KERNEL); | |
1681 | if (!id->route.path_rec) { | |
1682 | ret = -ENOMEM; | |
1683 | goto err; | |
1684 | } | |
1685 | ||
1686 | memcpy(id->route.path_rec, path_rec, sizeof *path_rec * num_paths); | |
1687 | return 0; | |
1688 | err: | |
1689 | cma_comp_exch(id_priv, CMA_ROUTE_RESOLVED, CMA_ADDR_RESOLVED); | |
1690 | return ret; | |
1691 | } | |
1692 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
1693 | ||
07ebafba TT |
1694 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
1695 | { | |
1696 | struct cma_work *work; | |
1697 | ||
1698 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1699 | if (!work) | |
1700 | return -ENOMEM; | |
1701 | ||
1702 | work->id = id_priv; | |
c4028958 | 1703 | INIT_WORK(&work->work, cma_work_handler); |
07ebafba TT |
1704 | work->old_state = CMA_ROUTE_QUERY; |
1705 | work->new_state = CMA_ROUTE_RESOLVED; | |
1706 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
1707 | queue_work(cma_wq, &work->work); | |
1708 | return 0; | |
1709 | } | |
1710 | ||
e51060f0 SH |
1711 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
1712 | { | |
1713 | struct rdma_id_private *id_priv; | |
1714 | int ret; | |
1715 | ||
1716 | id_priv = container_of(id, struct rdma_id_private, id); | |
1717 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ROUTE_QUERY)) | |
1718 | return -EINVAL; | |
1719 | ||
1720 | atomic_inc(&id_priv->refcount); | |
07ebafba TT |
1721 | switch (rdma_node_get_transport(id->device->node_type)) { |
1722 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
1723 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
1724 | break; | |
07ebafba TT |
1725 | case RDMA_TRANSPORT_IWARP: |
1726 | ret = cma_resolve_iw_route(id_priv, timeout_ms); | |
1727 | break; | |
e51060f0 SH |
1728 | default: |
1729 | ret = -ENOSYS; | |
1730 | break; | |
1731 | } | |
1732 | if (ret) | |
1733 | goto err; | |
1734 | ||
1735 | return 0; | |
1736 | err: | |
1737 | cma_comp_exch(id_priv, CMA_ROUTE_QUERY, CMA_ADDR_RESOLVED); | |
1738 | cma_deref_id(id_priv); | |
1739 | return ret; | |
1740 | } | |
1741 | EXPORT_SYMBOL(rdma_resolve_route); | |
1742 | ||
1743 | static int cma_bind_loopback(struct rdma_id_private *id_priv) | |
1744 | { | |
1745 | struct cma_device *cma_dev; | |
1746 | struct ib_port_attr port_attr; | |
f0ee3404 | 1747 | union ib_gid gid; |
e51060f0 SH |
1748 | u16 pkey; |
1749 | int ret; | |
1750 | u8 p; | |
1751 | ||
1752 | mutex_lock(&lock); | |
e82153b5 KK |
1753 | if (list_empty(&dev_list)) { |
1754 | ret = -ENODEV; | |
1755 | goto out; | |
1756 | } | |
e51060f0 SH |
1757 | list_for_each_entry(cma_dev, &dev_list, list) |
1758 | for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) | |
e82153b5 | 1759 | if (!ib_query_port(cma_dev->device, p, &port_attr) && |
e51060f0 SH |
1760 | port_attr.state == IB_PORT_ACTIVE) |
1761 | goto port_found; | |
1762 | ||
e82153b5 KK |
1763 | p = 1; |
1764 | cma_dev = list_entry(dev_list.next, struct cma_device, list); | |
e51060f0 SH |
1765 | |
1766 | port_found: | |
f0ee3404 | 1767 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
1768 | if (ret) |
1769 | goto out; | |
1770 | ||
1771 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
1772 | if (ret) | |
1773 | goto out; | |
1774 | ||
f0ee3404 | 1775 | ib_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
e51060f0 SH |
1776 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
1777 | id_priv->id.port_num = p; | |
1778 | cma_attach_to_dev(id_priv, cma_dev); | |
1779 | out: | |
1780 | mutex_unlock(&lock); | |
1781 | return ret; | |
1782 | } | |
1783 | ||
1784 | static void addr_handler(int status, struct sockaddr *src_addr, | |
1785 | struct rdma_dev_addr *dev_addr, void *context) | |
1786 | { | |
1787 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 1788 | struct rdma_cm_event event; |
e51060f0 | 1789 | |
a1b1b61f | 1790 | memset(&event, 0, sizeof event); |
de910bd9 | 1791 | mutex_lock(&id_priv->handler_mutex); |
61a73c70 SH |
1792 | |
1793 | /* | |
1794 | * Grab mutex to block rdma_destroy_id() from removing the device while | |
1795 | * we're trying to acquire it. | |
1796 | */ | |
1797 | mutex_lock(&lock); | |
1798 | if (!cma_comp_exch(id_priv, CMA_ADDR_QUERY, CMA_ADDR_RESOLVED)) { | |
1799 | mutex_unlock(&lock); | |
1800 | goto out; | |
1801 | } | |
1802 | ||
1803 | if (!status && !id_priv->cma_dev) | |
e51060f0 | 1804 | status = cma_acquire_dev(id_priv); |
61a73c70 | 1805 | mutex_unlock(&lock); |
e51060f0 SH |
1806 | |
1807 | if (status) { | |
61a73c70 | 1808 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ADDR_BOUND)) |
e51060f0 | 1809 | goto out; |
a1b1b61f SH |
1810 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
1811 | event.status = status; | |
e51060f0 | 1812 | } else { |
e51060f0 SH |
1813 | memcpy(&id_priv->id.route.addr.src_addr, src_addr, |
1814 | ip_addr_size(src_addr)); | |
a1b1b61f | 1815 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 SH |
1816 | } |
1817 | ||
a1b1b61f | 1818 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
e51060f0 | 1819 | cma_exch(id_priv, CMA_DESTROYING); |
de910bd9 | 1820 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1821 | cma_deref_id(id_priv); |
1822 | rdma_destroy_id(&id_priv->id); | |
1823 | return; | |
1824 | } | |
1825 | out: | |
de910bd9 | 1826 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1827 | cma_deref_id(id_priv); |
1828 | } | |
1829 | ||
1830 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
1831 | { | |
1832 | struct cma_work *work; | |
1833 | struct sockaddr_in *src_in, *dst_in; | |
f0ee3404 | 1834 | union ib_gid gid; |
e51060f0 SH |
1835 | int ret; |
1836 | ||
1837 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1838 | if (!work) | |
1839 | return -ENOMEM; | |
1840 | ||
1841 | if (!id_priv->cma_dev) { | |
1842 | ret = cma_bind_loopback(id_priv); | |
1843 | if (ret) | |
1844 | goto err; | |
1845 | } | |
1846 | ||
f0ee3404 MT |
1847 | ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
1848 | ib_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 1849 | |
3f446754 | 1850 | if (cma_zero_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)) { |
e51060f0 SH |
1851 | src_in = (struct sockaddr_in *)&id_priv->id.route.addr.src_addr; |
1852 | dst_in = (struct sockaddr_in *)&id_priv->id.route.addr.dst_addr; | |
1853 | src_in->sin_family = dst_in->sin_family; | |
1854 | src_in->sin_addr.s_addr = dst_in->sin_addr.s_addr; | |
1855 | } | |
1856 | ||
1857 | work->id = id_priv; | |
c4028958 | 1858 | INIT_WORK(&work->work, cma_work_handler); |
e51060f0 SH |
1859 | work->old_state = CMA_ADDR_QUERY; |
1860 | work->new_state = CMA_ADDR_RESOLVED; | |
1861 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
1862 | queue_work(cma_wq, &work->work); | |
1863 | return 0; | |
1864 | err: | |
1865 | kfree(work); | |
1866 | return ret; | |
1867 | } | |
1868 | ||
1869 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
1870 | struct sockaddr *dst_addr) | |
1871 | { | |
1872 | if (src_addr && src_addr->sa_family) | |
1873 | return rdma_bind_addr(id, src_addr); | |
1874 | else | |
1875 | return cma_bind_any(id, dst_addr->sa_family); | |
1876 | } | |
1877 | ||
1878 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
1879 | struct sockaddr *dst_addr, int timeout_ms) | |
1880 | { | |
1881 | struct rdma_id_private *id_priv; | |
1882 | int ret; | |
1883 | ||
1884 | id_priv = container_of(id, struct rdma_id_private, id); | |
1885 | if (id_priv->state == CMA_IDLE) { | |
1886 | ret = cma_bind_addr(id, src_addr, dst_addr); | |
1887 | if (ret) | |
1888 | return ret; | |
1889 | } | |
1890 | ||
1891 | if (!cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_ADDR_QUERY)) | |
1892 | return -EINVAL; | |
1893 | ||
1894 | atomic_inc(&id_priv->refcount); | |
1895 | memcpy(&id->route.addr.dst_addr, dst_addr, ip_addr_size(dst_addr)); | |
1896 | if (cma_any_addr(dst_addr)) | |
1897 | ret = cma_resolve_loopback(id_priv); | |
1898 | else | |
3f446754 | 1899 | ret = rdma_resolve_ip(&addr_client, (struct sockaddr *) &id->route.addr.src_addr, |
7a118df3 | 1900 | dst_addr, &id->route.addr.dev_addr, |
e51060f0 SH |
1901 | timeout_ms, addr_handler, id_priv); |
1902 | if (ret) | |
1903 | goto err; | |
1904 | ||
1905 | return 0; | |
1906 | err: | |
1907 | cma_comp_exch(id_priv, CMA_ADDR_QUERY, CMA_ADDR_BOUND); | |
1908 | cma_deref_id(id_priv); | |
1909 | return ret; | |
1910 | } | |
1911 | EXPORT_SYMBOL(rdma_resolve_addr); | |
1912 | ||
1913 | static void cma_bind_port(struct rdma_bind_list *bind_list, | |
1914 | struct rdma_id_private *id_priv) | |
1915 | { | |
1916 | struct sockaddr_in *sin; | |
1917 | ||
1918 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1919 | sin->sin_port = htons(bind_list->port); | |
1920 | id_priv->bind_list = bind_list; | |
1921 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
1922 | } | |
1923 | ||
1924 | static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, | |
1925 | unsigned short snum) | |
1926 | { | |
1927 | struct rdma_bind_list *bind_list; | |
aedec080 | 1928 | int port, ret; |
e51060f0 | 1929 | |
cb164b8c | 1930 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
1931 | if (!bind_list) |
1932 | return -ENOMEM; | |
1933 | ||
aedec080 SH |
1934 | do { |
1935 | ret = idr_get_new_above(ps, bind_list, snum, &port); | |
1936 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); | |
1937 | ||
1938 | if (ret) | |
1939 | goto err1; | |
1940 | ||
1941 | if (port != snum) { | |
1942 | ret = -EADDRNOTAVAIL; | |
1943 | goto err2; | |
1944 | } | |
1945 | ||
1946 | bind_list->ps = ps; | |
1947 | bind_list->port = (unsigned short) port; | |
1948 | cma_bind_port(bind_list, id_priv); | |
1949 | return 0; | |
1950 | err2: | |
1951 | idr_remove(ps, port); | |
1952 | err1: | |
1953 | kfree(bind_list); | |
1954 | return ret; | |
1955 | } | |
e51060f0 | 1956 | |
aedec080 SH |
1957 | static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv) |
1958 | { | |
1959 | struct rdma_bind_list *bind_list; | |
227b60f5 | 1960 | int port, ret, low, high; |
aedec080 SH |
1961 | |
1962 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); | |
1963 | if (!bind_list) | |
1964 | return -ENOMEM; | |
1965 | ||
1966 | retry: | |
227b60f5 | 1967 | /* FIXME: add proper port randomization per like inet_csk_get_port */ |
e51060f0 | 1968 | do { |
aedec080 | 1969 | ret = idr_get_new_above(ps, bind_list, next_port, &port); |
e51060f0 SH |
1970 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); |
1971 | ||
1972 | if (ret) | |
aedec080 | 1973 | goto err1; |
e51060f0 | 1974 | |
227b60f5 SH |
1975 | inet_get_local_port_range(&low, &high); |
1976 | if (port > high) { | |
1977 | if (next_port != low) { | |
aedec080 | 1978 | idr_remove(ps, port); |
227b60f5 | 1979 | next_port = low; |
aedec080 SH |
1980 | goto retry; |
1981 | } | |
e51060f0 | 1982 | ret = -EADDRNOTAVAIL; |
aedec080 | 1983 | goto err2; |
e51060f0 SH |
1984 | } |
1985 | ||
227b60f5 SH |
1986 | if (port == high) |
1987 | next_port = low; | |
aedec080 SH |
1988 | else |
1989 | next_port = port + 1; | |
1990 | ||
e51060f0 SH |
1991 | bind_list->ps = ps; |
1992 | bind_list->port = (unsigned short) port; | |
1993 | cma_bind_port(bind_list, id_priv); | |
1994 | return 0; | |
aedec080 SH |
1995 | err2: |
1996 | idr_remove(ps, port); | |
1997 | err1: | |
e51060f0 SH |
1998 | kfree(bind_list); |
1999 | return ret; | |
2000 | } | |
2001 | ||
2002 | static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv) | |
2003 | { | |
2004 | struct rdma_id_private *cur_id; | |
2005 | struct sockaddr_in *sin, *cur_sin; | |
2006 | struct rdma_bind_list *bind_list; | |
2007 | struct hlist_node *node; | |
2008 | unsigned short snum; | |
2009 | ||
2010 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
2011 | snum = ntohs(sin->sin_port); | |
2012 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
2013 | return -EACCES; | |
2014 | ||
2015 | bind_list = idr_find(ps, snum); | |
2016 | if (!bind_list) | |
2017 | return cma_alloc_port(ps, id_priv, snum); | |
2018 | ||
2019 | /* | |
2020 | * We don't support binding to any address if anyone is bound to | |
2021 | * a specific address on the same port. | |
2022 | */ | |
3f446754 | 2023 | if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)) |
e51060f0 SH |
2024 | return -EADDRNOTAVAIL; |
2025 | ||
2026 | hlist_for_each_entry(cur_id, node, &bind_list->owners, node) { | |
3f446754 | 2027 | if (cma_any_addr((struct sockaddr *) &cur_id->id.route.addr.src_addr)) |
e51060f0 | 2028 | return -EADDRNOTAVAIL; |
3cd96564 | 2029 | |
e51060f0 SH |
2030 | cur_sin = (struct sockaddr_in *) &cur_id->id.route.addr.src_addr; |
2031 | if (sin->sin_addr.s_addr == cur_sin->sin_addr.s_addr) | |
2032 | return -EADDRINUSE; | |
2033 | } | |
2034 | ||
2035 | cma_bind_port(bind_list, id_priv); | |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | static int cma_get_port(struct rdma_id_private *id_priv) | |
2040 | { | |
2041 | struct idr *ps; | |
2042 | int ret; | |
2043 | ||
2044 | switch (id_priv->id.ps) { | |
2045 | case RDMA_PS_SDP: | |
2046 | ps = &sdp_ps; | |
2047 | break; | |
2048 | case RDMA_PS_TCP: | |
2049 | ps = &tcp_ps; | |
2050 | break; | |
628e5f6d SH |
2051 | case RDMA_PS_UDP: |
2052 | ps = &udp_ps; | |
2053 | break; | |
c8f6a362 SH |
2054 | case RDMA_PS_IPOIB: |
2055 | ps = &ipoib_ps; | |
2056 | break; | |
e51060f0 SH |
2057 | default: |
2058 | return -EPROTONOSUPPORT; | |
2059 | } | |
2060 | ||
2061 | mutex_lock(&lock); | |
3f446754 | 2062 | if (cma_any_port((struct sockaddr *) &id_priv->id.route.addr.src_addr)) |
aedec080 | 2063 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2064 | else |
2065 | ret = cma_use_port(ps, id_priv); | |
2066 | mutex_unlock(&lock); | |
2067 | ||
2068 | return ret; | |
2069 | } | |
2070 | ||
2071 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) | |
2072 | { | |
2073 | struct rdma_id_private *id_priv; | |
2074 | int ret; | |
2075 | ||
2076 | if (addr->sa_family != AF_INET) | |
2077 | return -EAFNOSUPPORT; | |
2078 | ||
2079 | id_priv = container_of(id, struct rdma_id_private, id); | |
2080 | if (!cma_comp_exch(id_priv, CMA_IDLE, CMA_ADDR_BOUND)) | |
2081 | return -EINVAL; | |
2082 | ||
2083 | if (!cma_any_addr(addr)) { | |
2084 | ret = rdma_translate_ip(addr, &id->route.addr.dev_addr); | |
e51060f0 | 2085 | if (ret) |
255d0c14 KK |
2086 | goto err1; |
2087 | ||
2088 | mutex_lock(&lock); | |
2089 | ret = cma_acquire_dev(id_priv); | |
2090 | mutex_unlock(&lock); | |
2091 | if (ret) | |
2092 | goto err1; | |
e51060f0 SH |
2093 | } |
2094 | ||
2095 | memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr)); | |
2096 | ret = cma_get_port(id_priv); | |
2097 | if (ret) | |
255d0c14 | 2098 | goto err2; |
e51060f0 SH |
2099 | |
2100 | return 0; | |
255d0c14 KK |
2101 | err2: |
2102 | if (!cma_any_addr(addr)) { | |
2103 | mutex_lock(&lock); | |
2104 | cma_detach_from_dev(id_priv); | |
2105 | mutex_unlock(&lock); | |
2106 | } | |
2107 | err1: | |
e51060f0 SH |
2108 | cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_IDLE); |
2109 | return ret; | |
2110 | } | |
2111 | EXPORT_SYMBOL(rdma_bind_addr); | |
2112 | ||
2113 | static int cma_format_hdr(void *hdr, enum rdma_port_space ps, | |
2114 | struct rdma_route *route) | |
2115 | { | |
2116 | struct sockaddr_in *src4, *dst4; | |
2117 | struct cma_hdr *cma_hdr; | |
2118 | struct sdp_hh *sdp_hdr; | |
2119 | ||
2120 | src4 = (struct sockaddr_in *) &route->addr.src_addr; | |
2121 | dst4 = (struct sockaddr_in *) &route->addr.dst_addr; | |
2122 | ||
2123 | switch (ps) { | |
2124 | case RDMA_PS_SDP: | |
2125 | sdp_hdr = hdr; | |
2126 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2127 | return -EINVAL; | |
2128 | sdp_set_ip_ver(sdp_hdr, 4); | |
2129 | sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2130 | sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2131 | sdp_hdr->port = src4->sin_port; | |
2132 | break; | |
2133 | default: | |
2134 | cma_hdr = hdr; | |
2135 | cma_hdr->cma_version = CMA_VERSION; | |
2136 | cma_set_ip_ver(cma_hdr, 4); | |
2137 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2138 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2139 | cma_hdr->port = src4->sin_port; | |
2140 | break; | |
2141 | } | |
2142 | return 0; | |
2143 | } | |
2144 | ||
628e5f6d SH |
2145 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
2146 | struct ib_cm_event *ib_event) | |
2147 | { | |
2148 | struct rdma_id_private *id_priv = cm_id->context; | |
2149 | struct rdma_cm_event event; | |
2150 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
2151 | int ret = 0; | |
2152 | ||
de910bd9 | 2153 | if (cma_disable_callback(id_priv, CMA_CONNECT)) |
8aa08602 | 2154 | return 0; |
628e5f6d | 2155 | |
8aa08602 | 2156 | memset(&event, 0, sizeof event); |
628e5f6d SH |
2157 | switch (ib_event->event) { |
2158 | case IB_CM_SIDR_REQ_ERROR: | |
2159 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2160 | event.status = -ETIMEDOUT; | |
2161 | break; | |
2162 | case IB_CM_SIDR_REP_RECEIVED: | |
2163 | event.param.ud.private_data = ib_event->private_data; | |
2164 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
2165 | if (rep->status != IB_SIDR_SUCCESS) { | |
2166 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2167 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
2168 | break; | |
2169 | } | |
c8f6a362 | 2170 | if (id_priv->qkey != rep->qkey) { |
628e5f6d SH |
2171 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
2172 | event.status = -EINVAL; | |
2173 | break; | |
2174 | } | |
2175 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
2176 | id_priv->id.route.path_rec, | |
2177 | &event.param.ud.ah_attr); | |
2178 | event.param.ud.qp_num = rep->qpn; | |
2179 | event.param.ud.qkey = rep->qkey; | |
2180 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
2181 | event.status = 0; | |
2182 | break; | |
2183 | default: | |
468f2239 | 2184 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
2185 | ib_event->event); |
2186 | goto out; | |
2187 | } | |
2188 | ||
2189 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2190 | if (ret) { | |
2191 | /* Destroy the CM ID by returning a non-zero value. */ | |
2192 | id_priv->cm_id.ib = NULL; | |
2193 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 2194 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2195 | rdma_destroy_id(&id_priv->id); |
2196 | return ret; | |
2197 | } | |
2198 | out: | |
de910bd9 | 2199 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2200 | return ret; |
2201 | } | |
2202 | ||
2203 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
2204 | struct rdma_conn_param *conn_param) | |
2205 | { | |
2206 | struct ib_cm_sidr_req_param req; | |
2207 | struct rdma_route *route; | |
2208 | int ret; | |
2209 | ||
2210 | req.private_data_len = sizeof(struct cma_hdr) + | |
2211 | conn_param->private_data_len; | |
2212 | req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2213 | if (!req.private_data) | |
2214 | return -ENOMEM; | |
2215 | ||
2216 | if (conn_param->private_data && conn_param->private_data_len) | |
2217 | memcpy((void *) req.private_data + sizeof(struct cma_hdr), | |
2218 | conn_param->private_data, conn_param->private_data_len); | |
2219 | ||
2220 | route = &id_priv->id.route; | |
2221 | ret = cma_format_hdr((void *) req.private_data, id_priv->id.ps, route); | |
2222 | if (ret) | |
2223 | goto out; | |
2224 | ||
2225 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, | |
2226 | cma_sidr_rep_handler, id_priv); | |
2227 | if (IS_ERR(id_priv->cm_id.ib)) { | |
2228 | ret = PTR_ERR(id_priv->cm_id.ib); | |
2229 | goto out; | |
2230 | } | |
2231 | ||
2232 | req.path = route->path_rec; | |
2233 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2234 | (struct sockaddr *) &route->addr.dst_addr); |
628e5f6d SH |
2235 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
2236 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2237 | ||
2238 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
2239 | if (ret) { | |
2240 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2241 | id_priv->cm_id.ib = NULL; | |
2242 | } | |
2243 | out: | |
2244 | kfree(req.private_data); | |
2245 | return ret; | |
2246 | } | |
2247 | ||
e51060f0 SH |
2248 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
2249 | struct rdma_conn_param *conn_param) | |
2250 | { | |
2251 | struct ib_cm_req_param req; | |
2252 | struct rdma_route *route; | |
2253 | void *private_data; | |
2254 | int offset, ret; | |
2255 | ||
2256 | memset(&req, 0, sizeof req); | |
2257 | offset = cma_user_data_offset(id_priv->id.ps); | |
2258 | req.private_data_len = offset + conn_param->private_data_len; | |
2259 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2260 | if (!private_data) | |
2261 | return -ENOMEM; | |
2262 | ||
2263 | if (conn_param->private_data && conn_param->private_data_len) | |
2264 | memcpy(private_data + offset, conn_param->private_data, | |
2265 | conn_param->private_data_len); | |
2266 | ||
2267 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, cma_ib_handler, | |
2268 | id_priv); | |
2269 | if (IS_ERR(id_priv->cm_id.ib)) { | |
2270 | ret = PTR_ERR(id_priv->cm_id.ib); | |
2271 | goto out; | |
2272 | } | |
2273 | ||
2274 | route = &id_priv->id.route; | |
2275 | ret = cma_format_hdr(private_data, id_priv->id.ps, route); | |
2276 | if (ret) | |
2277 | goto out; | |
2278 | req.private_data = private_data; | |
2279 | ||
2280 | req.primary_path = &route->path_rec[0]; | |
2281 | if (route->num_paths == 2) | |
2282 | req.alternate_path = &route->path_rec[1]; | |
2283 | ||
2284 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2285 | (struct sockaddr *) &route->addr.dst_addr); |
e51060f0 | 2286 | req.qp_num = id_priv->qp_num; |
9b2e9c0c | 2287 | req.qp_type = IB_QPT_RC; |
e51060f0 SH |
2288 | req.starting_psn = id_priv->seq_num; |
2289 | req.responder_resources = conn_param->responder_resources; | |
2290 | req.initiator_depth = conn_param->initiator_depth; | |
2291 | req.flow_control = conn_param->flow_control; | |
2292 | req.retry_count = conn_param->retry_count; | |
2293 | req.rnr_retry_count = conn_param->rnr_retry_count; | |
2294 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2295 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2296 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2297 | req.srq = id_priv->srq ? 1 : 0; | |
2298 | ||
2299 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
2300 | out: | |
675a027c KK |
2301 | if (ret && !IS_ERR(id_priv->cm_id.ib)) { |
2302 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2303 | id_priv->cm_id.ib = NULL; | |
2304 | } | |
2305 | ||
e51060f0 SH |
2306 | kfree(private_data); |
2307 | return ret; | |
2308 | } | |
2309 | ||
07ebafba TT |
2310 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
2311 | struct rdma_conn_param *conn_param) | |
2312 | { | |
2313 | struct iw_cm_id *cm_id; | |
2314 | struct sockaddr_in* sin; | |
2315 | int ret; | |
2316 | struct iw_cm_conn_param iw_param; | |
2317 | ||
2318 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
2319 | if (IS_ERR(cm_id)) { | |
2320 | ret = PTR_ERR(cm_id); | |
2321 | goto out; | |
2322 | } | |
2323 | ||
2324 | id_priv->cm_id.iw = cm_id; | |
2325 | ||
2326 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.src_addr; | |
2327 | cm_id->local_addr = *sin; | |
2328 | ||
2329 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.dst_addr; | |
2330 | cm_id->remote_addr = *sin; | |
2331 | ||
5851bb89 | 2332 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
2333 | if (ret) |
2334 | goto out; | |
07ebafba TT |
2335 | |
2336 | iw_param.ord = conn_param->initiator_depth; | |
2337 | iw_param.ird = conn_param->responder_resources; | |
2338 | iw_param.private_data = conn_param->private_data; | |
2339 | iw_param.private_data_len = conn_param->private_data_len; | |
2340 | if (id_priv->id.qp) | |
2341 | iw_param.qpn = id_priv->qp_num; | |
2342 | else | |
2343 | iw_param.qpn = conn_param->qp_num; | |
2344 | ret = iw_cm_connect(cm_id, &iw_param); | |
2345 | out: | |
675a027c KK |
2346 | if (ret && !IS_ERR(cm_id)) { |
2347 | iw_destroy_cm_id(cm_id); | |
2348 | id_priv->cm_id.iw = NULL; | |
2349 | } | |
07ebafba TT |
2350 | return ret; |
2351 | } | |
2352 | ||
e51060f0 SH |
2353 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2354 | { | |
2355 | struct rdma_id_private *id_priv; | |
2356 | int ret; | |
2357 | ||
2358 | id_priv = container_of(id, struct rdma_id_private, id); | |
2359 | if (!cma_comp_exch(id_priv, CMA_ROUTE_RESOLVED, CMA_CONNECT)) | |
2360 | return -EINVAL; | |
2361 | ||
2362 | if (!id->qp) { | |
2363 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2364 | id_priv->srq = conn_param->srq; |
2365 | } | |
2366 | ||
07ebafba TT |
2367 | switch (rdma_node_get_transport(id->device->node_type)) { |
2368 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2369 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2370 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
2371 | else | |
2372 | ret = cma_connect_ib(id_priv, conn_param); | |
e51060f0 | 2373 | break; |
07ebafba TT |
2374 | case RDMA_TRANSPORT_IWARP: |
2375 | ret = cma_connect_iw(id_priv, conn_param); | |
2376 | break; | |
e51060f0 SH |
2377 | default: |
2378 | ret = -ENOSYS; | |
2379 | break; | |
2380 | } | |
2381 | if (ret) | |
2382 | goto err; | |
2383 | ||
2384 | return 0; | |
2385 | err: | |
2386 | cma_comp_exch(id_priv, CMA_CONNECT, CMA_ROUTE_RESOLVED); | |
2387 | return ret; | |
2388 | } | |
2389 | EXPORT_SYMBOL(rdma_connect); | |
2390 | ||
2391 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
2392 | struct rdma_conn_param *conn_param) | |
2393 | { | |
2394 | struct ib_cm_rep_param rep; | |
5851bb89 | 2395 | int ret; |
0fe313b0 | 2396 | |
5851bb89 SH |
2397 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
2398 | if (ret) | |
2399 | goto out; | |
0fe313b0 | 2400 | |
5851bb89 SH |
2401 | ret = cma_modify_qp_rts(id_priv, conn_param); |
2402 | if (ret) | |
2403 | goto out; | |
e51060f0 SH |
2404 | |
2405 | memset(&rep, 0, sizeof rep); | |
2406 | rep.qp_num = id_priv->qp_num; | |
2407 | rep.starting_psn = id_priv->seq_num; | |
2408 | rep.private_data = conn_param->private_data; | |
2409 | rep.private_data_len = conn_param->private_data_len; | |
2410 | rep.responder_resources = conn_param->responder_resources; | |
2411 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
2412 | rep.failover_accepted = 0; |
2413 | rep.flow_control = conn_param->flow_control; | |
2414 | rep.rnr_retry_count = conn_param->rnr_retry_count; | |
2415 | rep.srq = id_priv->srq ? 1 : 0; | |
2416 | ||
0fe313b0 SH |
2417 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
2418 | out: | |
2419 | return ret; | |
e51060f0 SH |
2420 | } |
2421 | ||
07ebafba TT |
2422 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
2423 | struct rdma_conn_param *conn_param) | |
2424 | { | |
2425 | struct iw_cm_conn_param iw_param; | |
2426 | int ret; | |
2427 | ||
5851bb89 | 2428 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
2429 | if (ret) |
2430 | return ret; | |
2431 | ||
2432 | iw_param.ord = conn_param->initiator_depth; | |
2433 | iw_param.ird = conn_param->responder_resources; | |
2434 | iw_param.private_data = conn_param->private_data; | |
2435 | iw_param.private_data_len = conn_param->private_data_len; | |
2436 | if (id_priv->id.qp) { | |
2437 | iw_param.qpn = id_priv->qp_num; | |
2438 | } else | |
2439 | iw_param.qpn = conn_param->qp_num; | |
2440 | ||
2441 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
2442 | } | |
2443 | ||
628e5f6d SH |
2444 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
2445 | enum ib_cm_sidr_status status, | |
2446 | const void *private_data, int private_data_len) | |
2447 | { | |
2448 | struct ib_cm_sidr_rep_param rep; | |
2449 | ||
2450 | memset(&rep, 0, sizeof rep); | |
2451 | rep.status = status; | |
2452 | if (status == IB_SIDR_SUCCESS) { | |
2453 | rep.qp_num = id_priv->qp_num; | |
c8f6a362 | 2454 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
2455 | } |
2456 | rep.private_data = private_data; | |
2457 | rep.private_data_len = private_data_len; | |
2458 | ||
2459 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
2460 | } | |
2461 | ||
e51060f0 SH |
2462 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2463 | { | |
2464 | struct rdma_id_private *id_priv; | |
2465 | int ret; | |
2466 | ||
2467 | id_priv = container_of(id, struct rdma_id_private, id); | |
2468 | if (!cma_comp(id_priv, CMA_CONNECT)) | |
2469 | return -EINVAL; | |
2470 | ||
2471 | if (!id->qp && conn_param) { | |
2472 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2473 | id_priv->srq = conn_param->srq; |
2474 | } | |
2475 | ||
07ebafba TT |
2476 | switch (rdma_node_get_transport(id->device->node_type)) { |
2477 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2478 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2479 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, |
2480 | conn_param->private_data, | |
2481 | conn_param->private_data_len); | |
2482 | else if (conn_param) | |
e51060f0 SH |
2483 | ret = cma_accept_ib(id_priv, conn_param); |
2484 | else | |
2485 | ret = cma_rep_recv(id_priv); | |
2486 | break; | |
07ebafba TT |
2487 | case RDMA_TRANSPORT_IWARP: |
2488 | ret = cma_accept_iw(id_priv, conn_param); | |
2489 | break; | |
e51060f0 SH |
2490 | default: |
2491 | ret = -ENOSYS; | |
2492 | break; | |
2493 | } | |
2494 | ||
2495 | if (ret) | |
2496 | goto reject; | |
2497 | ||
2498 | return 0; | |
2499 | reject: | |
c5483388 | 2500 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
2501 | rdma_reject(id, NULL, 0); |
2502 | return ret; | |
2503 | } | |
2504 | EXPORT_SYMBOL(rdma_accept); | |
2505 | ||
0fe313b0 SH |
2506 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
2507 | { | |
2508 | struct rdma_id_private *id_priv; | |
2509 | int ret; | |
2510 | ||
2511 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2512 | if (!cma_has_cm_dev(id_priv)) |
0fe313b0 SH |
2513 | return -EINVAL; |
2514 | ||
2515 | switch (id->device->node_type) { | |
2516 | case RDMA_NODE_IB_CA: | |
2517 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
2518 | break; | |
2519 | default: | |
2520 | ret = 0; | |
2521 | break; | |
2522 | } | |
2523 | return ret; | |
2524 | } | |
2525 | EXPORT_SYMBOL(rdma_notify); | |
2526 | ||
e51060f0 SH |
2527 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
2528 | u8 private_data_len) | |
2529 | { | |
2530 | struct rdma_id_private *id_priv; | |
2531 | int ret; | |
2532 | ||
2533 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2534 | if (!cma_has_cm_dev(id_priv)) |
e51060f0 SH |
2535 | return -EINVAL; |
2536 | ||
07ebafba TT |
2537 | switch (rdma_node_get_transport(id->device->node_type)) { |
2538 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2539 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2540 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, |
2541 | private_data, private_data_len); | |
2542 | else | |
2543 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
2544 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
2545 | 0, private_data, private_data_len); | |
e51060f0 | 2546 | break; |
07ebafba TT |
2547 | case RDMA_TRANSPORT_IWARP: |
2548 | ret = iw_cm_reject(id_priv->cm_id.iw, | |
2549 | private_data, private_data_len); | |
2550 | break; | |
e51060f0 SH |
2551 | default: |
2552 | ret = -ENOSYS; | |
2553 | break; | |
2554 | } | |
2555 | return ret; | |
2556 | } | |
2557 | EXPORT_SYMBOL(rdma_reject); | |
2558 | ||
2559 | int rdma_disconnect(struct rdma_cm_id *id) | |
2560 | { | |
2561 | struct rdma_id_private *id_priv; | |
2562 | int ret; | |
2563 | ||
2564 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2565 | if (!cma_has_cm_dev(id_priv)) |
e51060f0 SH |
2566 | return -EINVAL; |
2567 | ||
07ebafba TT |
2568 | switch (rdma_node_get_transport(id->device->node_type)) { |
2569 | case RDMA_TRANSPORT_IB: | |
c5483388 | 2570 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
2571 | if (ret) |
2572 | goto out; | |
e51060f0 SH |
2573 | /* Initiate or respond to a disconnect. */ |
2574 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
2575 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
2576 | break; | |
07ebafba TT |
2577 | case RDMA_TRANSPORT_IWARP: |
2578 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); | |
2579 | break; | |
e51060f0 | 2580 | default: |
07ebafba | 2581 | ret = -EINVAL; |
e51060f0 SH |
2582 | break; |
2583 | } | |
2584 | out: | |
2585 | return ret; | |
2586 | } | |
2587 | EXPORT_SYMBOL(rdma_disconnect); | |
2588 | ||
c8f6a362 SH |
2589 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
2590 | { | |
2591 | struct rdma_id_private *id_priv; | |
2592 | struct cma_multicast *mc = multicast->context; | |
2593 | struct rdma_cm_event event; | |
2594 | int ret; | |
2595 | ||
2596 | id_priv = mc->id_priv; | |
de910bd9 OG |
2597 | if (cma_disable_callback(id_priv, CMA_ADDR_BOUND) && |
2598 | cma_disable_callback(id_priv, CMA_ADDR_RESOLVED)) | |
8aa08602 | 2599 | return 0; |
c8f6a362 | 2600 | |
c5483388 | 2601 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
2602 | if (!status && id_priv->id.qp) |
2603 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
2604 | multicast->rec.mlid); | |
c5483388 | 2605 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
2606 | |
2607 | memset(&event, 0, sizeof event); | |
2608 | event.status = status; | |
2609 | event.param.ud.private_data = mc->context; | |
2610 | if (!status) { | |
2611 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
2612 | ib_init_ah_from_mcmember(id_priv->id.device, | |
2613 | id_priv->id.port_num, &multicast->rec, | |
2614 | &event.param.ud.ah_attr); | |
2615 | event.param.ud.qp_num = 0xFFFFFF; | |
2616 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
2617 | } else | |
2618 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
2619 | ||
2620 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2621 | if (ret) { | |
2622 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 2623 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2624 | rdma_destroy_id(&id_priv->id); |
2625 | return 0; | |
2626 | } | |
8aa08602 | 2627 | |
de910bd9 | 2628 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2629 | return 0; |
2630 | } | |
2631 | ||
2632 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
2633 | struct sockaddr *addr, union ib_gid *mgid) | |
2634 | { | |
2635 | unsigned char mc_map[MAX_ADDR_LEN]; | |
2636 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2637 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
2638 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
2639 | ||
2640 | if (cma_any_addr(addr)) { | |
2641 | memset(mgid, 0, sizeof *mgid); | |
2642 | } else if ((addr->sa_family == AF_INET6) && | |
2643 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFF10A01B) == | |
2644 | 0xFF10A01B)) { | |
2645 | /* IPv6 address is an SA assigned MGID. */ | |
2646 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
2647 | } else { | |
a9e527e3 | 2648 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
2649 | if (id_priv->id.ps == RDMA_PS_UDP) |
2650 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
2651 | *mgid = *(union ib_gid *) (mc_map + 4); |
2652 | } | |
2653 | } | |
2654 | ||
2655 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
2656 | struct cma_multicast *mc) | |
2657 | { | |
2658 | struct ib_sa_mcmember_rec rec; | |
2659 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2660 | ib_sa_comp_mask comp_mask; | |
2661 | int ret; | |
2662 | ||
2663 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
2664 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
2665 | &rec.mgid, &rec); | |
2666 | if (ret) | |
2667 | return ret; | |
2668 | ||
3f446754 | 2669 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
c8f6a362 SH |
2670 | if (id_priv->id.ps == RDMA_PS_UDP) |
2671 | rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
2672 | ib_addr_get_sgid(dev_addr, &rec.port_gid); | |
2673 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
2674 | rec.join_state = 1; | |
2675 | ||
2676 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
2677 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
2678 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
2679 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
2680 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
2681 | ||
2682 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, | |
2683 | id_priv->id.port_num, &rec, | |
2684 | comp_mask, GFP_KERNEL, | |
2685 | cma_ib_mc_handler, mc); | |
2686 | if (IS_ERR(mc->multicast.ib)) | |
2687 | return PTR_ERR(mc->multicast.ib); | |
2688 | ||
2689 | return 0; | |
2690 | } | |
2691 | ||
2692 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, | |
2693 | void *context) | |
2694 | { | |
2695 | struct rdma_id_private *id_priv; | |
2696 | struct cma_multicast *mc; | |
2697 | int ret; | |
2698 | ||
2699 | id_priv = container_of(id, struct rdma_id_private, id); | |
2700 | if (!cma_comp(id_priv, CMA_ADDR_BOUND) && | |
2701 | !cma_comp(id_priv, CMA_ADDR_RESOLVED)) | |
2702 | return -EINVAL; | |
2703 | ||
2704 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
2705 | if (!mc) | |
2706 | return -ENOMEM; | |
2707 | ||
2708 | memcpy(&mc->addr, addr, ip_addr_size(addr)); | |
2709 | mc->context = context; | |
2710 | mc->id_priv = id_priv; | |
2711 | ||
2712 | spin_lock(&id_priv->lock); | |
2713 | list_add(&mc->list, &id_priv->mc_list); | |
2714 | spin_unlock(&id_priv->lock); | |
2715 | ||
2716 | switch (rdma_node_get_transport(id->device->node_type)) { | |
2717 | case RDMA_TRANSPORT_IB: | |
2718 | ret = cma_join_ib_multicast(id_priv, mc); | |
2719 | break; | |
2720 | default: | |
2721 | ret = -ENOSYS; | |
2722 | break; | |
2723 | } | |
2724 | ||
2725 | if (ret) { | |
2726 | spin_lock_irq(&id_priv->lock); | |
2727 | list_del(&mc->list); | |
2728 | spin_unlock_irq(&id_priv->lock); | |
2729 | kfree(mc); | |
2730 | } | |
2731 | return ret; | |
2732 | } | |
2733 | EXPORT_SYMBOL(rdma_join_multicast); | |
2734 | ||
2735 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
2736 | { | |
2737 | struct rdma_id_private *id_priv; | |
2738 | struct cma_multicast *mc; | |
2739 | ||
2740 | id_priv = container_of(id, struct rdma_id_private, id); | |
2741 | spin_lock_irq(&id_priv->lock); | |
2742 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
2743 | if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) { | |
2744 | list_del(&mc->list); | |
2745 | spin_unlock_irq(&id_priv->lock); | |
2746 | ||
2747 | if (id->qp) | |
2748 | ib_detach_mcast(id->qp, | |
2749 | &mc->multicast.ib->rec.mgid, | |
2750 | mc->multicast.ib->rec.mlid); | |
2751 | ib_sa_free_multicast(mc->multicast.ib); | |
2752 | kfree(mc); | |
2753 | return; | |
2754 | } | |
2755 | } | |
2756 | spin_unlock_irq(&id_priv->lock); | |
2757 | } | |
2758 | EXPORT_SYMBOL(rdma_leave_multicast); | |
2759 | ||
dd5bdff8 OG |
2760 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
2761 | { | |
2762 | struct rdma_dev_addr *dev_addr; | |
2763 | struct cma_ndev_work *work; | |
2764 | ||
2765 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
2766 | ||
2767 | if ((dev_addr->src_dev == ndev) && | |
2768 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { | |
2769 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
2770 | ndev->name, &id_priv->id); | |
2771 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2772 | if (!work) | |
2773 | return -ENOMEM; | |
2774 | ||
2775 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
2776 | work->id = id_priv; | |
2777 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
2778 | atomic_inc(&id_priv->refcount); | |
2779 | queue_work(cma_wq, &work->work); | |
2780 | } | |
2781 | ||
2782 | return 0; | |
2783 | } | |
2784 | ||
2785 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
2786 | void *ctx) | |
2787 | { | |
2788 | struct net_device *ndev = (struct net_device *)ctx; | |
2789 | struct cma_device *cma_dev; | |
2790 | struct rdma_id_private *id_priv; | |
2791 | int ret = NOTIFY_DONE; | |
2792 | ||
2793 | if (dev_net(ndev) != &init_net) | |
2794 | return NOTIFY_DONE; | |
2795 | ||
2796 | if (event != NETDEV_BONDING_FAILOVER) | |
2797 | return NOTIFY_DONE; | |
2798 | ||
2799 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
2800 | return NOTIFY_DONE; | |
2801 | ||
2802 | mutex_lock(&lock); | |
2803 | list_for_each_entry(cma_dev, &dev_list, list) | |
2804 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
2805 | ret = cma_netdev_change(ndev, id_priv); | |
2806 | if (ret) | |
2807 | goto out; | |
2808 | } | |
2809 | ||
2810 | out: | |
2811 | mutex_unlock(&lock); | |
2812 | return ret; | |
2813 | } | |
2814 | ||
2815 | static struct notifier_block cma_nb = { | |
2816 | .notifier_call = cma_netdev_callback | |
2817 | }; | |
2818 | ||
e51060f0 SH |
2819 | static void cma_add_one(struct ib_device *device) |
2820 | { | |
2821 | struct cma_device *cma_dev; | |
2822 | struct rdma_id_private *id_priv; | |
2823 | ||
2824 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
2825 | if (!cma_dev) | |
2826 | return; | |
2827 | ||
2828 | cma_dev->device = device; | |
e51060f0 SH |
2829 | |
2830 | init_completion(&cma_dev->comp); | |
2831 | atomic_set(&cma_dev->refcount, 1); | |
2832 | INIT_LIST_HEAD(&cma_dev->id_list); | |
2833 | ib_set_client_data(device, &cma_client, cma_dev); | |
2834 | ||
2835 | mutex_lock(&lock); | |
2836 | list_add_tail(&cma_dev->list, &dev_list); | |
2837 | list_for_each_entry(id_priv, &listen_any_list, list) | |
2838 | cma_listen_on_dev(id_priv, cma_dev); | |
2839 | mutex_unlock(&lock); | |
e51060f0 SH |
2840 | } |
2841 | ||
2842 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
2843 | { | |
a1b1b61f | 2844 | struct rdma_cm_event event; |
e51060f0 | 2845 | enum cma_state state; |
de910bd9 | 2846 | int ret = 0; |
e51060f0 SH |
2847 | |
2848 | /* Record that we want to remove the device */ | |
2849 | state = cma_exch(id_priv, CMA_DEVICE_REMOVAL); | |
2850 | if (state == CMA_DESTROYING) | |
2851 | return 0; | |
2852 | ||
2853 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 2854 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2855 | |
2856 | /* Check for destruction from another callback. */ | |
2857 | if (!cma_comp(id_priv, CMA_DEVICE_REMOVAL)) | |
de910bd9 | 2858 | goto out; |
e51060f0 | 2859 | |
a1b1b61f SH |
2860 | memset(&event, 0, sizeof event); |
2861 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
2862 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
2863 | out: | |
2864 | mutex_unlock(&id_priv->handler_mutex); | |
2865 | return ret; | |
e51060f0 SH |
2866 | } |
2867 | ||
2868 | static void cma_process_remove(struct cma_device *cma_dev) | |
2869 | { | |
e51060f0 SH |
2870 | struct rdma_id_private *id_priv; |
2871 | int ret; | |
2872 | ||
e51060f0 SH |
2873 | mutex_lock(&lock); |
2874 | while (!list_empty(&cma_dev->id_list)) { | |
2875 | id_priv = list_entry(cma_dev->id_list.next, | |
2876 | struct rdma_id_private, list); | |
2877 | ||
d02d1f53 | 2878 | list_del(&id_priv->listen_list); |
94de178a | 2879 | list_del_init(&id_priv->list); |
e51060f0 SH |
2880 | atomic_inc(&id_priv->refcount); |
2881 | mutex_unlock(&lock); | |
2882 | ||
d02d1f53 | 2883 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
2884 | cma_deref_id(id_priv); |
2885 | if (ret) | |
2886 | rdma_destroy_id(&id_priv->id); | |
2887 | ||
2888 | mutex_lock(&lock); | |
2889 | } | |
2890 | mutex_unlock(&lock); | |
2891 | ||
2892 | cma_deref_dev(cma_dev); | |
2893 | wait_for_completion(&cma_dev->comp); | |
2894 | } | |
2895 | ||
2896 | static void cma_remove_one(struct ib_device *device) | |
2897 | { | |
2898 | struct cma_device *cma_dev; | |
2899 | ||
2900 | cma_dev = ib_get_client_data(device, &cma_client); | |
2901 | if (!cma_dev) | |
2902 | return; | |
2903 | ||
2904 | mutex_lock(&lock); | |
2905 | list_del(&cma_dev->list); | |
2906 | mutex_unlock(&lock); | |
2907 | ||
2908 | cma_process_remove(cma_dev); | |
2909 | kfree(cma_dev); | |
2910 | } | |
2911 | ||
2912 | static int cma_init(void) | |
2913 | { | |
a25de534 | 2914 | int ret, low, high, remaining; |
e51060f0 | 2915 | |
aedec080 | 2916 | get_random_bytes(&next_port, sizeof next_port); |
227b60f5 | 2917 | inet_get_local_port_range(&low, &high); |
a25de534 AA |
2918 | remaining = (high - low) + 1; |
2919 | next_port = ((unsigned int) next_port % remaining) + low; | |
227b60f5 | 2920 | |
c7f743a6 | 2921 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
2922 | if (!cma_wq) |
2923 | return -ENOMEM; | |
2924 | ||
c1a0b23b | 2925 | ib_sa_register_client(&sa_client); |
7a118df3 | 2926 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 2927 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 2928 | |
e51060f0 SH |
2929 | ret = ib_register_client(&cma_client); |
2930 | if (ret) | |
2931 | goto err; | |
2932 | return 0; | |
2933 | ||
2934 | err: | |
dd5bdff8 | 2935 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 2936 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 2937 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
2938 | destroy_workqueue(cma_wq); |
2939 | return ret; | |
2940 | } | |
2941 | ||
2942 | static void cma_cleanup(void) | |
2943 | { | |
2944 | ib_unregister_client(&cma_client); | |
dd5bdff8 | 2945 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 2946 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 2947 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
2948 | destroy_workqueue(cma_wq); |
2949 | idr_destroy(&sdp_ps); | |
2950 | idr_destroy(&tcp_ps); | |
628e5f6d | 2951 | idr_destroy(&udp_ps); |
c8f6a362 | 2952 | idr_destroy(&ipoib_ps); |
e51060f0 SH |
2953 | } |
2954 | ||
2955 | module_init(cma_init); | |
2956 | module_exit(cma_cleanup); |