Commit | Line | Data |
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e51060f0 SH |
1 | /* |
2 | * Copyright (c) 2005 Voltaire Inc. All rights reserved. | |
3 | * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved. | |
4 | * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved. | |
5 | * Copyright (c) 2005-2006 Intel Corporation. All rights reserved. | |
6 | * | |
a9474917 SH |
7 | * This software is available to you under a choice of one of two |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
e51060f0 | 12 | * |
a9474917 SH |
13 | * Redistribution and use in source and binary forms, with or |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
e51060f0 | 16 | * |
a9474917 SH |
17 | * - Redistributions of source code must retain the above |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
e51060f0 | 20 | * |
a9474917 SH |
21 | * - Redistributions in binary form must reproduce the above |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
e51060f0 | 25 | * |
a9474917 SH |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
e51060f0 SH |
34 | */ |
35 | ||
36 | #include <linux/completion.h> | |
37 | #include <linux/in.h> | |
38 | #include <linux/in6.h> | |
39 | #include <linux/mutex.h> | |
40 | #include <linux/random.h> | |
41 | #include <linux/idr.h> | |
07ebafba | 42 | #include <linux/inetdevice.h> |
e51060f0 SH |
43 | |
44 | #include <net/tcp.h> | |
1f5175ad | 45 | #include <net/ipv6.h> |
e51060f0 SH |
46 | |
47 | #include <rdma/rdma_cm.h> | |
48 | #include <rdma/rdma_cm_ib.h> | |
49 | #include <rdma/ib_cache.h> | |
50 | #include <rdma/ib_cm.h> | |
51 | #include <rdma/ib_sa.h> | |
07ebafba | 52 | #include <rdma/iw_cm.h> |
e51060f0 SH |
53 | |
54 | MODULE_AUTHOR("Sean Hefty"); | |
55 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
56 | MODULE_LICENSE("Dual BSD/GPL"); | |
57 | ||
58 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
d5bb7599 | 59 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 60 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
e51060f0 SH |
61 | |
62 | static void cma_add_one(struct ib_device *device); | |
63 | static void cma_remove_one(struct ib_device *device); | |
64 | ||
65 | static struct ib_client cma_client = { | |
66 | .name = "cma", | |
67 | .add = cma_add_one, | |
68 | .remove = cma_remove_one | |
69 | }; | |
70 | ||
c1a0b23b | 71 | static struct ib_sa_client sa_client; |
7a118df3 | 72 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
73 | static LIST_HEAD(dev_list); |
74 | static LIST_HEAD(listen_any_list); | |
75 | static DEFINE_MUTEX(lock); | |
76 | static struct workqueue_struct *cma_wq; | |
77 | static DEFINE_IDR(sdp_ps); | |
78 | static DEFINE_IDR(tcp_ps); | |
628e5f6d | 79 | static DEFINE_IDR(udp_ps); |
c8f6a362 | 80 | static DEFINE_IDR(ipoib_ps); |
aedec080 | 81 | static int next_port; |
e51060f0 SH |
82 | |
83 | struct cma_device { | |
84 | struct list_head list; | |
85 | struct ib_device *device; | |
e51060f0 SH |
86 | struct completion comp; |
87 | atomic_t refcount; | |
88 | struct list_head id_list; | |
89 | }; | |
90 | ||
91 | enum cma_state { | |
92 | CMA_IDLE, | |
93 | CMA_ADDR_QUERY, | |
94 | CMA_ADDR_RESOLVED, | |
95 | CMA_ROUTE_QUERY, | |
96 | CMA_ROUTE_RESOLVED, | |
97 | CMA_CONNECT, | |
98 | CMA_DISCONNECT, | |
99 | CMA_ADDR_BOUND, | |
100 | CMA_LISTEN, | |
101 | CMA_DEVICE_REMOVAL, | |
102 | CMA_DESTROYING | |
103 | }; | |
104 | ||
105 | struct rdma_bind_list { | |
106 | struct idr *ps; | |
107 | struct hlist_head owners; | |
108 | unsigned short port; | |
109 | }; | |
110 | ||
111 | /* | |
112 | * Device removal can occur at anytime, so we need extra handling to | |
113 | * serialize notifying the user of device removal with other callbacks. | |
114 | * We do this by disabling removal notification while a callback is in process, | |
115 | * and reporting it after the callback completes. | |
116 | */ | |
117 | struct rdma_id_private { | |
118 | struct rdma_cm_id id; | |
119 | ||
120 | struct rdma_bind_list *bind_list; | |
121 | struct hlist_node node; | |
d02d1f53 SH |
122 | struct list_head list; /* listen_any_list or cma_device.list */ |
123 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 124 | struct cma_device *cma_dev; |
c8f6a362 | 125 | struct list_head mc_list; |
e51060f0 | 126 | |
d02d1f53 | 127 | int internal_id; |
e51060f0 SH |
128 | enum cma_state state; |
129 | spinlock_t lock; | |
c5483388 SH |
130 | struct mutex qp_mutex; |
131 | ||
e51060f0 SH |
132 | struct completion comp; |
133 | atomic_t refcount; | |
de910bd9 | 134 | struct mutex handler_mutex; |
e51060f0 SH |
135 | |
136 | int backlog; | |
137 | int timeout_ms; | |
138 | struct ib_sa_query *query; | |
139 | int query_id; | |
140 | union { | |
141 | struct ib_cm_id *ib; | |
07ebafba | 142 | struct iw_cm_id *iw; |
e51060f0 SH |
143 | } cm_id; |
144 | ||
145 | u32 seq_num; | |
c8f6a362 | 146 | u32 qkey; |
e51060f0 | 147 | u32 qp_num; |
e51060f0 | 148 | u8 srq; |
a81c994d | 149 | u8 tos; |
e51060f0 SH |
150 | }; |
151 | ||
c8f6a362 SH |
152 | struct cma_multicast { |
153 | struct rdma_id_private *id_priv; | |
154 | union { | |
155 | struct ib_sa_multicast *ib; | |
156 | } multicast; | |
157 | struct list_head list; | |
158 | void *context; | |
3f446754 | 159 | struct sockaddr_storage addr; |
c8f6a362 SH |
160 | }; |
161 | ||
e51060f0 SH |
162 | struct cma_work { |
163 | struct work_struct work; | |
164 | struct rdma_id_private *id; | |
165 | enum cma_state old_state; | |
166 | enum cma_state new_state; | |
167 | struct rdma_cm_event event; | |
168 | }; | |
169 | ||
dd5bdff8 OG |
170 | struct cma_ndev_work { |
171 | struct work_struct work; | |
172 | struct rdma_id_private *id; | |
173 | struct rdma_cm_event event; | |
174 | }; | |
175 | ||
e51060f0 SH |
176 | union cma_ip_addr { |
177 | struct in6_addr ip6; | |
178 | struct { | |
1b90c137 AV |
179 | __be32 pad[3]; |
180 | __be32 addr; | |
e51060f0 SH |
181 | } ip4; |
182 | }; | |
183 | ||
184 | struct cma_hdr { | |
185 | u8 cma_version; | |
186 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 187 | __be16 port; |
e51060f0 SH |
188 | union cma_ip_addr src_addr; |
189 | union cma_ip_addr dst_addr; | |
190 | }; | |
191 | ||
192 | struct sdp_hh { | |
193 | u8 bsdh[16]; | |
194 | u8 sdp_version; /* Major version: 7:4 */ | |
195 | u8 ip_version; /* IP version: 7:4 */ | |
196 | u8 sdp_specific1[10]; | |
1b90c137 AV |
197 | __be16 port; |
198 | __be16 sdp_specific2; | |
e51060f0 SH |
199 | union cma_ip_addr src_addr; |
200 | union cma_ip_addr dst_addr; | |
201 | }; | |
202 | ||
203 | struct sdp_hah { | |
204 | u8 bsdh[16]; | |
205 | u8 sdp_version; | |
206 | }; | |
207 | ||
208 | #define CMA_VERSION 0x00 | |
209 | #define SDP_MAJ_VERSION 0x2 | |
210 | ||
211 | static int cma_comp(struct rdma_id_private *id_priv, enum cma_state comp) | |
212 | { | |
213 | unsigned long flags; | |
214 | int ret; | |
215 | ||
216 | spin_lock_irqsave(&id_priv->lock, flags); | |
217 | ret = (id_priv->state == comp); | |
218 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
219 | return ret; | |
220 | } | |
221 | ||
222 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
223 | enum cma_state comp, enum cma_state exch) | |
224 | { | |
225 | unsigned long flags; | |
226 | int ret; | |
227 | ||
228 | spin_lock_irqsave(&id_priv->lock, flags); | |
229 | if ((ret = (id_priv->state == comp))) | |
230 | id_priv->state = exch; | |
231 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
232 | return ret; | |
233 | } | |
234 | ||
235 | static enum cma_state cma_exch(struct rdma_id_private *id_priv, | |
236 | enum cma_state exch) | |
237 | { | |
238 | unsigned long flags; | |
239 | enum cma_state old; | |
240 | ||
241 | spin_lock_irqsave(&id_priv->lock, flags); | |
242 | old = id_priv->state; | |
243 | id_priv->state = exch; | |
244 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
245 | return old; | |
246 | } | |
247 | ||
248 | static inline u8 cma_get_ip_ver(struct cma_hdr *hdr) | |
249 | { | |
250 | return hdr->ip_version >> 4; | |
251 | } | |
252 | ||
253 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
254 | { | |
255 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
256 | } | |
257 | ||
258 | static inline u8 sdp_get_majv(u8 sdp_version) | |
259 | { | |
260 | return sdp_version >> 4; | |
261 | } | |
262 | ||
263 | static inline u8 sdp_get_ip_ver(struct sdp_hh *hh) | |
264 | { | |
265 | return hh->ip_version >> 4; | |
266 | } | |
267 | ||
268 | static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) | |
269 | { | |
270 | hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF); | |
271 | } | |
272 | ||
c8f6a362 SH |
273 | static inline int cma_is_ud_ps(enum rdma_port_space ps) |
274 | { | |
275 | return (ps == RDMA_PS_UDP || ps == RDMA_PS_IPOIB); | |
276 | } | |
277 | ||
e51060f0 SH |
278 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
279 | struct cma_device *cma_dev) | |
280 | { | |
281 | atomic_inc(&cma_dev->refcount); | |
282 | id_priv->cma_dev = cma_dev; | |
283 | id_priv->id.device = cma_dev->device; | |
284 | list_add_tail(&id_priv->list, &cma_dev->id_list); | |
285 | } | |
286 | ||
287 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
288 | { | |
289 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
290 | complete(&cma_dev->comp); | |
291 | } | |
292 | ||
293 | static void cma_detach_from_dev(struct rdma_id_private *id_priv) | |
294 | { | |
295 | list_del(&id_priv->list); | |
296 | cma_deref_dev(id_priv->cma_dev); | |
297 | id_priv->cma_dev = NULL; | |
298 | } | |
299 | ||
d2ca39f2 | 300 | static int cma_set_qkey(struct rdma_id_private *id_priv) |
c8f6a362 SH |
301 | { |
302 | struct ib_sa_mcmember_rec rec; | |
303 | int ret = 0; | |
304 | ||
d2ca39f2 YE |
305 | if (id_priv->qkey) |
306 | return 0; | |
307 | ||
308 | switch (id_priv->id.ps) { | |
c8f6a362 | 309 | case RDMA_PS_UDP: |
d2ca39f2 | 310 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
311 | break; |
312 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
313 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
314 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
315 | id_priv->id.port_num, &rec.mgid, | |
316 | &rec); | |
317 | if (!ret) | |
318 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
319 | break; |
320 | default: | |
321 | break; | |
322 | } | |
323 | return ret; | |
324 | } | |
325 | ||
07ebafba | 326 | static int cma_acquire_dev(struct rdma_id_private *id_priv) |
e51060f0 | 327 | { |
c8f6a362 | 328 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 329 | struct cma_device *cma_dev; |
f0ee3404 | 330 | union ib_gid gid; |
e51060f0 SH |
331 | int ret = -ENODEV; |
332 | ||
c4315d85 SH |
333 | switch (dev_addr->dev_type) { |
334 | case ARPHRD_INFINIBAND: | |
c8f6a362 | 335 | ib_addr_get_sgid(dev_addr, &gid); |
07ebafba | 336 | break; |
c4315d85 | 337 | case ARPHRD_ETHER: |
c8f6a362 | 338 | iw_addr_get_sgid(dev_addr, &gid); |
07ebafba TT |
339 | break; |
340 | default: | |
341 | return -ENODEV; | |
342 | } | |
61a73c70 | 343 | |
e51060f0 | 344 | list_for_each_entry(cma_dev, &dev_list, list) { |
f0ee3404 | 345 | ret = ib_find_cached_gid(cma_dev->device, &gid, |
e51060f0 SH |
346 | &id_priv->id.port_num, NULL); |
347 | if (!ret) { | |
d2ca39f2 | 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)) { | |
d2ca39f2 YE |
580 | ret = cma_set_qkey(id_priv); |
581 | if (ret) | |
582 | return ret; | |
583 | ||
c8f6a362 SH |
584 | qp_attr->qkey = id_priv->qkey; |
585 | *qp_attr_mask |= IB_QP_QKEY; | |
586 | } else { | |
587 | qp_attr->qp_access_flags = 0; | |
588 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
589 | } | |
590 | return 0; | |
591 | } | |
592 | ||
e51060f0 SH |
593 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
594 | int *qp_attr_mask) | |
595 | { | |
596 | struct rdma_id_private *id_priv; | |
c8f6a362 | 597 | int ret = 0; |
e51060f0 SH |
598 | |
599 | id_priv = container_of(id, struct rdma_id_private, id); | |
07ebafba TT |
600 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
601 | case RDMA_TRANSPORT_IB: | |
c8f6a362 SH |
602 | if (!id_priv->cm_id.ib || cma_is_ud_ps(id_priv->id.ps)) |
603 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); | |
604 | else | |
605 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
606 | qp_attr_mask); | |
e51060f0 SH |
607 | if (qp_attr->qp_state == IB_QPS_RTR) |
608 | qp_attr->rq_psn = id_priv->seq_num; | |
609 | break; | |
07ebafba | 610 | case RDMA_TRANSPORT_IWARP: |
c8f6a362 | 611 | if (!id_priv->cm_id.iw) { |
8f076531 | 612 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
613 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
614 | } else | |
615 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
616 | qp_attr_mask); | |
07ebafba | 617 | break; |
e51060f0 SH |
618 | default: |
619 | ret = -ENOSYS; | |
620 | break; | |
621 | } | |
622 | ||
623 | return ret; | |
624 | } | |
625 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
626 | ||
627 | static inline int cma_zero_addr(struct sockaddr *addr) | |
628 | { | |
629 | struct in6_addr *ip6; | |
630 | ||
631 | if (addr->sa_family == AF_INET) | |
6360a02a JP |
632 | return ipv4_is_zeronet( |
633 | ((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
e51060f0 SH |
634 | else { |
635 | ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; | |
636 | return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | | |
5fd571cb | 637 | ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; |
e51060f0 SH |
638 | } |
639 | } | |
640 | ||
641 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
642 | { | |
1f5175ad AS |
643 | if (addr->sa_family == AF_INET) |
644 | return ipv4_is_loopback( | |
645 | ((struct sockaddr_in *) addr)->sin_addr.s_addr); | |
646 | else | |
647 | return ipv6_addr_loopback( | |
648 | &((struct sockaddr_in6 *) addr)->sin6_addr); | |
e51060f0 SH |
649 | } |
650 | ||
651 | static inline int cma_any_addr(struct sockaddr *addr) | |
652 | { | |
653 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
654 | } | |
655 | ||
628e5f6d SH |
656 | static inline __be16 cma_port(struct sockaddr *addr) |
657 | { | |
658 | if (addr->sa_family == AF_INET) | |
659 | return ((struct sockaddr_in *) addr)->sin_port; | |
660 | else | |
661 | return ((struct sockaddr_in6 *) addr)->sin6_port; | |
662 | } | |
663 | ||
e51060f0 SH |
664 | static inline int cma_any_port(struct sockaddr *addr) |
665 | { | |
628e5f6d | 666 | return !cma_port(addr); |
e51060f0 SH |
667 | } |
668 | ||
669 | static int cma_get_net_info(void *hdr, enum rdma_port_space ps, | |
1b90c137 | 670 | u8 *ip_ver, __be16 *port, |
e51060f0 SH |
671 | union cma_ip_addr **src, union cma_ip_addr **dst) |
672 | { | |
673 | switch (ps) { | |
674 | case RDMA_PS_SDP: | |
675 | if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) != | |
676 | SDP_MAJ_VERSION) | |
677 | return -EINVAL; | |
678 | ||
679 | *ip_ver = sdp_get_ip_ver(hdr); | |
680 | *port = ((struct sdp_hh *) hdr)->port; | |
681 | *src = &((struct sdp_hh *) hdr)->src_addr; | |
682 | *dst = &((struct sdp_hh *) hdr)->dst_addr; | |
683 | break; | |
684 | default: | |
685 | if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION) | |
686 | return -EINVAL; | |
687 | ||
688 | *ip_ver = cma_get_ip_ver(hdr); | |
689 | *port = ((struct cma_hdr *) hdr)->port; | |
690 | *src = &((struct cma_hdr *) hdr)->src_addr; | |
691 | *dst = &((struct cma_hdr *) hdr)->dst_addr; | |
692 | break; | |
693 | } | |
694 | ||
695 | if (*ip_ver != 4 && *ip_ver != 6) | |
696 | return -EINVAL; | |
697 | return 0; | |
698 | } | |
699 | ||
700 | static void cma_save_net_info(struct rdma_addr *addr, | |
701 | struct rdma_addr *listen_addr, | |
1b90c137 | 702 | u8 ip_ver, __be16 port, |
e51060f0 SH |
703 | union cma_ip_addr *src, union cma_ip_addr *dst) |
704 | { | |
705 | struct sockaddr_in *listen4, *ip4; | |
706 | struct sockaddr_in6 *listen6, *ip6; | |
707 | ||
708 | switch (ip_ver) { | |
709 | case 4: | |
710 | listen4 = (struct sockaddr_in *) &listen_addr->src_addr; | |
711 | ip4 = (struct sockaddr_in *) &addr->src_addr; | |
712 | ip4->sin_family = listen4->sin_family; | |
713 | ip4->sin_addr.s_addr = dst->ip4.addr; | |
714 | ip4->sin_port = listen4->sin_port; | |
715 | ||
716 | ip4 = (struct sockaddr_in *) &addr->dst_addr; | |
717 | ip4->sin_family = listen4->sin_family; | |
718 | ip4->sin_addr.s_addr = src->ip4.addr; | |
719 | ip4->sin_port = port; | |
720 | break; | |
721 | case 6: | |
722 | listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr; | |
723 | ip6 = (struct sockaddr_in6 *) &addr->src_addr; | |
724 | ip6->sin6_family = listen6->sin6_family; | |
725 | ip6->sin6_addr = dst->ip6; | |
726 | ip6->sin6_port = listen6->sin6_port; | |
727 | ||
728 | ip6 = (struct sockaddr_in6 *) &addr->dst_addr; | |
729 | ip6->sin6_family = listen6->sin6_family; | |
730 | ip6->sin6_addr = src->ip6; | |
731 | ip6->sin6_port = port; | |
732 | break; | |
733 | default: | |
734 | break; | |
735 | } | |
736 | } | |
737 | ||
738 | static inline int cma_user_data_offset(enum rdma_port_space ps) | |
739 | { | |
740 | switch (ps) { | |
741 | case RDMA_PS_SDP: | |
742 | return 0; | |
743 | default: | |
744 | return sizeof(struct cma_hdr); | |
745 | } | |
746 | } | |
747 | ||
e51060f0 SH |
748 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
749 | { | |
07ebafba TT |
750 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
751 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
752 | if (id_priv->query) |
753 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
754 | break; | |
755 | default: | |
756 | break; | |
757 | } | |
758 | } | |
759 | ||
e51060f0 SH |
760 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
761 | { | |
762 | struct rdma_id_private *dev_id_priv; | |
763 | ||
d02d1f53 SH |
764 | /* |
765 | * Remove from listen_any_list to prevent added devices from spawning | |
766 | * additional listen requests. | |
767 | */ | |
e51060f0 SH |
768 | mutex_lock(&lock); |
769 | list_del(&id_priv->list); | |
770 | ||
771 | while (!list_empty(&id_priv->listen_list)) { | |
772 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
773 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
774 | /* sync with device removal to avoid duplicate destruction */ |
775 | list_del_init(&dev_id_priv->list); | |
776 | list_del(&dev_id_priv->listen_list); | |
777 | mutex_unlock(&lock); | |
778 | ||
779 | rdma_destroy_id(&dev_id_priv->id); | |
780 | mutex_lock(&lock); | |
e51060f0 SH |
781 | } |
782 | mutex_unlock(&lock); | |
783 | } | |
784 | ||
785 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
786 | enum cma_state state) | |
787 | { | |
788 | switch (state) { | |
789 | case CMA_ADDR_QUERY: | |
790 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); | |
791 | break; | |
792 | case CMA_ROUTE_QUERY: | |
793 | cma_cancel_route(id_priv); | |
794 | break; | |
795 | case CMA_LISTEN: | |
3f446754 RD |
796 | if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr) |
797 | && !id_priv->cma_dev) | |
e51060f0 SH |
798 | cma_cancel_listens(id_priv); |
799 | break; | |
800 | default: | |
801 | break; | |
802 | } | |
803 | } | |
804 | ||
805 | static void cma_release_port(struct rdma_id_private *id_priv) | |
806 | { | |
807 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
808 | ||
809 | if (!bind_list) | |
810 | return; | |
811 | ||
812 | mutex_lock(&lock); | |
813 | hlist_del(&id_priv->node); | |
814 | if (hlist_empty(&bind_list->owners)) { | |
815 | idr_remove(bind_list->ps, bind_list->port); | |
816 | kfree(bind_list); | |
817 | } | |
818 | mutex_unlock(&lock); | |
819 | } | |
820 | ||
c8f6a362 SH |
821 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
822 | { | |
823 | struct cma_multicast *mc; | |
824 | ||
825 | while (!list_empty(&id_priv->mc_list)) { | |
826 | mc = container_of(id_priv->mc_list.next, | |
827 | struct cma_multicast, list); | |
828 | list_del(&mc->list); | |
829 | ib_sa_free_multicast(mc->multicast.ib); | |
830 | kfree(mc); | |
831 | } | |
832 | } | |
833 | ||
e51060f0 SH |
834 | void rdma_destroy_id(struct rdma_cm_id *id) |
835 | { | |
836 | struct rdma_id_private *id_priv; | |
837 | enum cma_state state; | |
838 | ||
839 | id_priv = container_of(id, struct rdma_id_private, id); | |
840 | state = cma_exch(id_priv, CMA_DESTROYING); | |
841 | cma_cancel_operation(id_priv, state); | |
842 | ||
61a73c70 | 843 | mutex_lock(&lock); |
e51060f0 | 844 | if (id_priv->cma_dev) { |
61a73c70 | 845 | mutex_unlock(&lock); |
07ebafba TT |
846 | switch (rdma_node_get_transport(id->device->node_type)) { |
847 | case RDMA_TRANSPORT_IB: | |
3cd96564 | 848 | if (id_priv->cm_id.ib && !IS_ERR(id_priv->cm_id.ib)) |
e51060f0 SH |
849 | ib_destroy_cm_id(id_priv->cm_id.ib); |
850 | break; | |
07ebafba TT |
851 | case RDMA_TRANSPORT_IWARP: |
852 | if (id_priv->cm_id.iw && !IS_ERR(id_priv->cm_id.iw)) | |
853 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
854 | break; | |
e51060f0 SH |
855 | default: |
856 | break; | |
857 | } | |
c8f6a362 | 858 | cma_leave_mc_groups(id_priv); |
3cd96564 | 859 | mutex_lock(&lock); |
e51060f0 | 860 | cma_detach_from_dev(id_priv); |
e51060f0 | 861 | } |
61a73c70 | 862 | mutex_unlock(&lock); |
e51060f0 SH |
863 | |
864 | cma_release_port(id_priv); | |
865 | cma_deref_id(id_priv); | |
866 | wait_for_completion(&id_priv->comp); | |
867 | ||
d02d1f53 SH |
868 | if (id_priv->internal_id) |
869 | cma_deref_id(id_priv->id.context); | |
870 | ||
e51060f0 SH |
871 | kfree(id_priv->id.route.path_rec); |
872 | kfree(id_priv); | |
873 | } | |
874 | EXPORT_SYMBOL(rdma_destroy_id); | |
875 | ||
876 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
877 | { | |
878 | int ret; | |
879 | ||
5851bb89 | 880 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
881 | if (ret) |
882 | goto reject; | |
883 | ||
5851bb89 | 884 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
885 | if (ret) |
886 | goto reject; | |
887 | ||
888 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
889 | if (ret) | |
890 | goto reject; | |
891 | ||
892 | return 0; | |
893 | reject: | |
c5483388 | 894 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
895 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
896 | NULL, 0, NULL, 0); | |
897 | return ret; | |
898 | } | |
899 | ||
900 | static int cma_verify_rep(struct rdma_id_private *id_priv, void *data) | |
901 | { | |
902 | if (id_priv->id.ps == RDMA_PS_SDP && | |
903 | sdp_get_majv(((struct sdp_hah *) data)->sdp_version) != | |
904 | SDP_MAJ_VERSION) | |
905 | return -EINVAL; | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
a1b1b61f SH |
910 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
911 | struct ib_cm_rep_event_param *rep_data, | |
912 | void *private_data) | |
913 | { | |
914 | event->param.conn.private_data = private_data; | |
915 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
916 | event->param.conn.responder_resources = rep_data->responder_resources; | |
917 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
918 | event->param.conn.flow_control = rep_data->flow_control; | |
919 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
920 | event->param.conn.srq = rep_data->srq; | |
921 | event->param.conn.qp_num = rep_data->remote_qpn; | |
922 | } | |
923 | ||
e51060f0 SH |
924 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
925 | { | |
926 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
927 | struct rdma_cm_event event; |
928 | int ret = 0; | |
e51060f0 | 929 | |
38ca83a5 AV |
930 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
931 | cma_disable_callback(id_priv, CMA_CONNECT)) || | |
932 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && | |
933 | cma_disable_callback(id_priv, CMA_DISCONNECT))) | |
8aa08602 | 934 | return 0; |
e51060f0 | 935 | |
a1b1b61f | 936 | memset(&event, 0, sizeof event); |
e51060f0 SH |
937 | switch (ib_event->event) { |
938 | case IB_CM_REQ_ERROR: | |
939 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
940 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
941 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
942 | break; |
943 | case IB_CM_REP_RECEIVED: | |
a1b1b61f SH |
944 | event.status = cma_verify_rep(id_priv, ib_event->private_data); |
945 | if (event.status) | |
946 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
e51060f0 | 947 | else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) { |
a1b1b61f SH |
948 | event.status = cma_rep_recv(id_priv); |
949 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
950 | RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 | 951 | } else |
a1b1b61f SH |
952 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
953 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, | |
954 | ib_event->private_data); | |
e51060f0 SH |
955 | break; |
956 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
957 | case IB_CM_USER_ESTABLISHED: |
958 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
959 | break; |
960 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 961 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
962 | case IB_CM_DREQ_RECEIVED: |
963 | case IB_CM_DREP_RECEIVED: | |
964 | if (!cma_comp_exch(id_priv, CMA_CONNECT, CMA_DISCONNECT)) | |
965 | goto out; | |
a1b1b61f | 966 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
967 | break; |
968 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
969 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
970 | break; | |
e51060f0 SH |
971 | case IB_CM_MRA_RECEIVED: |
972 | /* ignore event */ | |
973 | goto out; | |
974 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 975 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
976 | event.status = ib_event->param.rej_rcvd.reason; |
977 | event.event = RDMA_CM_EVENT_REJECTED; | |
978 | event.param.conn.private_data = ib_event->private_data; | |
979 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
980 | break; |
981 | default: | |
468f2239 | 982 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
983 | ib_event->event); |
984 | goto out; | |
985 | } | |
986 | ||
a1b1b61f | 987 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
988 | if (ret) { |
989 | /* Destroy the CM ID by returning a non-zero value. */ | |
990 | id_priv->cm_id.ib = NULL; | |
991 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 992 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
993 | rdma_destroy_id(&id_priv->id); |
994 | return ret; | |
995 | } | |
996 | out: | |
de910bd9 | 997 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
998 | return ret; |
999 | } | |
1000 | ||
628e5f6d SH |
1001 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
1002 | struct ib_cm_event *ib_event) | |
e51060f0 SH |
1003 | { |
1004 | struct rdma_id_private *id_priv; | |
1005 | struct rdma_cm_id *id; | |
1006 | struct rdma_route *rt; | |
1007 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1008 | __be16 port; |
e51060f0 | 1009 | u8 ip_ver; |
64c5e613 | 1010 | int ret; |
e51060f0 | 1011 | |
3f168d2b KK |
1012 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1013 | &ip_ver, &port, &src, &dst)) | |
1014 | goto err; | |
1015 | ||
e51060f0 SH |
1016 | id = rdma_create_id(listen_id->event_handler, listen_id->context, |
1017 | listen_id->ps); | |
1018 | if (IS_ERR(id)) | |
3f168d2b KK |
1019 | goto err; |
1020 | ||
1021 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1022 | ip_ver, port, src, dst); | |
e51060f0 SH |
1023 | |
1024 | rt = &id->route; | |
1025 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1026 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1027 | GFP_KERNEL); | |
e51060f0 | 1028 | if (!rt->path_rec) |
3f168d2b | 1029 | goto destroy_id; |
e51060f0 | 1030 | |
e51060f0 SH |
1031 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1032 | if (rt->num_paths == 2) | |
1033 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1034 | ||
e51060f0 | 1035 | ib_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); |
3f446754 | 1036 | ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr, |
64c5e613 OG |
1037 | &id->route.addr.dev_addr); |
1038 | if (ret) | |
1039 | goto destroy_id; | |
e51060f0 SH |
1040 | |
1041 | id_priv = container_of(id, struct rdma_id_private, id); | |
1042 | id_priv->state = CMA_CONNECT; | |
1043 | return id_priv; | |
3f168d2b KK |
1044 | |
1045 | destroy_id: | |
e51060f0 | 1046 | rdma_destroy_id(id); |
3f168d2b | 1047 | err: |
e51060f0 SH |
1048 | return NULL; |
1049 | } | |
1050 | ||
628e5f6d SH |
1051 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
1052 | struct ib_cm_event *ib_event) | |
1053 | { | |
1054 | struct rdma_id_private *id_priv; | |
1055 | struct rdma_cm_id *id; | |
1056 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1057 | __be16 port; |
628e5f6d SH |
1058 | u8 ip_ver; |
1059 | int ret; | |
1060 | ||
1061 | id = rdma_create_id(listen_id->event_handler, listen_id->context, | |
1062 | listen_id->ps); | |
1063 | if (IS_ERR(id)) | |
1064 | return NULL; | |
1065 | ||
1066 | ||
1067 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, | |
1068 | &ip_ver, &port, &src, &dst)) | |
1069 | goto err; | |
1070 | ||
1071 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1072 | ip_ver, port, src, dst); | |
1073 | ||
3f446754 | 1074 | ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr, |
628e5f6d SH |
1075 | &id->route.addr.dev_addr); |
1076 | if (ret) | |
1077 | goto err; | |
1078 | ||
1079 | id_priv = container_of(id, struct rdma_id_private, id); | |
1080 | id_priv->state = CMA_CONNECT; | |
1081 | return id_priv; | |
1082 | err: | |
1083 | rdma_destroy_id(id); | |
1084 | return NULL; | |
1085 | } | |
1086 | ||
a1b1b61f SH |
1087 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1088 | struct ib_cm_req_event_param *req_data, | |
1089 | void *private_data, int offset) | |
1090 | { | |
1091 | event->param.conn.private_data = private_data + offset; | |
1092 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1093 | event->param.conn.responder_resources = req_data->responder_resources; | |
1094 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1095 | event->param.conn.flow_control = req_data->flow_control; | |
1096 | event->param.conn.retry_count = req_data->retry_count; | |
1097 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1098 | event->param.conn.srq = req_data->srq; | |
1099 | event->param.conn.qp_num = req_data->remote_qpn; | |
1100 | } | |
1101 | ||
e51060f0 SH |
1102 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1103 | { | |
1104 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1105 | struct rdma_cm_event event; |
e51060f0 SH |
1106 | int offset, ret; |
1107 | ||
1108 | listen_id = cm_id->context; | |
de910bd9 | 1109 | if (cma_disable_callback(listen_id, CMA_LISTEN)) |
8aa08602 | 1110 | return -ECONNABORTED; |
e51060f0 | 1111 | |
628e5f6d SH |
1112 | memset(&event, 0, sizeof event); |
1113 | offset = cma_user_data_offset(listen_id->id.ps); | |
1114 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
c8f6a362 | 1115 | if (cma_is_ud_ps(listen_id->id.ps)) { |
628e5f6d SH |
1116 | conn_id = cma_new_udp_id(&listen_id->id, ib_event); |
1117 | event.param.ud.private_data = ib_event->private_data + offset; | |
1118 | event.param.ud.private_data_len = | |
1119 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1120 | } else { | |
1121 | conn_id = cma_new_conn_id(&listen_id->id, ib_event); | |
1122 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, | |
1123 | ib_event->private_data, offset); | |
1124 | } | |
e51060f0 SH |
1125 | if (!conn_id) { |
1126 | ret = -ENOMEM; | |
1127 | goto out; | |
1128 | } | |
1129 | ||
de910bd9 | 1130 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
61a73c70 | 1131 | mutex_lock(&lock); |
07ebafba | 1132 | ret = cma_acquire_dev(conn_id); |
61a73c70 | 1133 | mutex_unlock(&lock); |
a1a733f6 KK |
1134 | if (ret) |
1135 | goto release_conn_id; | |
e51060f0 SH |
1136 | |
1137 | conn_id->cm_id.ib = cm_id; | |
1138 | cm_id->context = conn_id; | |
1139 | cm_id->cm_handler = cma_ib_handler; | |
1140 | ||
a1b1b61f | 1141 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
45d9478d | 1142 | if (!ret) { |
ead595ae SH |
1143 | /* |
1144 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1145 | * while we're accessing the cm_id. | |
1146 | */ | |
1147 | mutex_lock(&lock); | |
1148 | if (cma_comp(conn_id, CMA_CONNECT) && | |
1149 | !cma_is_ud_ps(conn_id->id.ps)) | |
1150 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); | |
1151 | mutex_unlock(&lock); | |
de910bd9 | 1152 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 | 1153 | goto out; |
45d9478d | 1154 | } |
a1a733f6 KK |
1155 | |
1156 | /* Destroy the CM ID by returning a non-zero value. */ | |
1157 | conn_id->cm_id.ib = NULL; | |
1158 | ||
1159 | release_conn_id: | |
1160 | cma_exch(conn_id, CMA_DESTROYING); | |
de910bd9 | 1161 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 KK |
1162 | rdma_destroy_id(&conn_id->id); |
1163 | ||
e51060f0 | 1164 | out: |
de910bd9 | 1165 | mutex_unlock(&listen_id->handler_mutex); |
e51060f0 SH |
1166 | return ret; |
1167 | } | |
1168 | ||
1169 | static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr) | |
1170 | { | |
628e5f6d | 1171 | return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 SH |
1172 | } |
1173 | ||
1174 | static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr, | |
1175 | struct ib_cm_compare_data *compare) | |
1176 | { | |
1177 | struct cma_hdr *cma_data, *cma_mask; | |
1178 | struct sdp_hh *sdp_data, *sdp_mask; | |
1b90c137 | 1179 | __be32 ip4_addr; |
e51060f0 SH |
1180 | struct in6_addr ip6_addr; |
1181 | ||
1182 | memset(compare, 0, sizeof *compare); | |
1183 | cma_data = (void *) compare->data; | |
1184 | cma_mask = (void *) compare->mask; | |
1185 | sdp_data = (void *) compare->data; | |
1186 | sdp_mask = (void *) compare->mask; | |
1187 | ||
1188 | switch (addr->sa_family) { | |
1189 | case AF_INET: | |
1190 | ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | |
1191 | if (ps == RDMA_PS_SDP) { | |
1192 | sdp_set_ip_ver(sdp_data, 4); | |
1193 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1194 | sdp_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1195 | sdp_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1196 | } else { |
1197 | cma_set_ip_ver(cma_data, 4); | |
1198 | cma_set_ip_ver(cma_mask, 0xF); | |
1199 | cma_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1200 | cma_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1201 | } |
1202 | break; | |
1203 | case AF_INET6: | |
1204 | ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr; | |
1205 | if (ps == RDMA_PS_SDP) { | |
1206 | sdp_set_ip_ver(sdp_data, 6); | |
1207 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1208 | sdp_data->dst_addr.ip6 = ip6_addr; | |
1209 | memset(&sdp_mask->dst_addr.ip6, 0xFF, | |
1210 | sizeof sdp_mask->dst_addr.ip6); | |
1211 | } else { | |
1212 | cma_set_ip_ver(cma_data, 6); | |
1213 | cma_set_ip_ver(cma_mask, 0xF); | |
1214 | cma_data->dst_addr.ip6 = ip6_addr; | |
1215 | memset(&cma_mask->dst_addr.ip6, 0xFF, | |
1216 | sizeof cma_mask->dst_addr.ip6); | |
1217 | } | |
1218 | break; | |
1219 | default: | |
1220 | break; | |
1221 | } | |
1222 | } | |
1223 | ||
07ebafba TT |
1224 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1225 | { | |
1226 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1227 | struct rdma_cm_event event; |
07ebafba TT |
1228 | struct sockaddr_in *sin; |
1229 | int ret = 0; | |
1230 | ||
de910bd9 | 1231 | if (cma_disable_callback(id_priv, CMA_CONNECT)) |
be65f086 | 1232 | return 0; |
07ebafba | 1233 | |
be65f086 | 1234 | memset(&event, 0, sizeof event); |
07ebafba TT |
1235 | switch (iw_event->event) { |
1236 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1237 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1238 | break; |
1239 | case IW_CM_EVENT_CONNECT_REPLY: | |
1240 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1241 | *sin = iw_event->local_addr; | |
1242 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.dst_addr; | |
1243 | *sin = iw_event->remote_addr; | |
881a045f SW |
1244 | switch (iw_event->status) { |
1245 | case 0: | |
a1b1b61f | 1246 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
881a045f SW |
1247 | break; |
1248 | case -ECONNRESET: | |
1249 | case -ECONNREFUSED: | |
1250 | event.event = RDMA_CM_EVENT_REJECTED; | |
1251 | break; | |
1252 | case -ETIMEDOUT: | |
1253 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1254 | break; | |
1255 | default: | |
1256 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1257 | break; | |
1258 | } | |
07ebafba TT |
1259 | break; |
1260 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1261 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
07ebafba TT |
1262 | break; |
1263 | default: | |
1264 | BUG_ON(1); | |
1265 | } | |
1266 | ||
a1b1b61f SH |
1267 | event.status = iw_event->status; |
1268 | event.param.conn.private_data = iw_event->private_data; | |
1269 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1270 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1271 | if (ret) { |
1272 | /* Destroy the CM ID by returning a non-zero value. */ | |
1273 | id_priv->cm_id.iw = NULL; | |
1274 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 1275 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1276 | rdma_destroy_id(&id_priv->id); |
1277 | return ret; | |
1278 | } | |
1279 | ||
de910bd9 | 1280 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1281 | return ret; |
1282 | } | |
1283 | ||
1284 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1285 | struct iw_cm_event *iw_event) | |
1286 | { | |
1287 | struct rdma_cm_id *new_cm_id; | |
1288 | struct rdma_id_private *listen_id, *conn_id; | |
1289 | struct sockaddr_in *sin; | |
1290 | struct net_device *dev = NULL; | |
a1b1b61f | 1291 | struct rdma_cm_event event; |
07ebafba | 1292 | int ret; |
8d8293cf | 1293 | struct ib_device_attr attr; |
07ebafba TT |
1294 | |
1295 | listen_id = cm_id->context; | |
de910bd9 | 1296 | if (cma_disable_callback(listen_id, CMA_LISTEN)) |
8aa08602 | 1297 | return -ECONNABORTED; |
07ebafba TT |
1298 | |
1299 | /* Create a new RDMA id for the new IW CM ID */ | |
1300 | new_cm_id = rdma_create_id(listen_id->id.event_handler, | |
1301 | listen_id->id.context, | |
1302 | RDMA_PS_TCP); | |
10f32065 | 1303 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1304 | ret = -ENOMEM; |
1305 | goto out; | |
1306 | } | |
1307 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1308 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
07ebafba TT |
1309 | conn_id->state = CMA_CONNECT; |
1310 | ||
1ab35276 | 1311 | dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr); |
07ebafba TT |
1312 | if (!dev) { |
1313 | ret = -EADDRNOTAVAIL; | |
de910bd9 | 1314 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1315 | rdma_destroy_id(new_cm_id); |
1316 | goto out; | |
1317 | } | |
1318 | ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL); | |
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 | ||
61a73c70 | 1325 | mutex_lock(&lock); |
07ebafba | 1326 | ret = cma_acquire_dev(conn_id); |
61a73c70 | 1327 | mutex_unlock(&lock); |
07ebafba | 1328 | if (ret) { |
de910bd9 | 1329 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1330 | rdma_destroy_id(new_cm_id); |
1331 | goto out; | |
1332 | } | |
1333 | ||
1334 | conn_id->cm_id.iw = cm_id; | |
1335 | cm_id->context = conn_id; | |
1336 | cm_id->cm_handler = cma_iw_handler; | |
1337 | ||
1338 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.src_addr; | |
1339 | *sin = iw_event->local_addr; | |
1340 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr; | |
1341 | *sin = iw_event->remote_addr; | |
1342 | ||
8d8293cf SW |
1343 | ret = ib_query_device(conn_id->id.device, &attr); |
1344 | if (ret) { | |
de910bd9 | 1345 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1346 | rdma_destroy_id(new_cm_id); |
1347 | goto out; | |
1348 | } | |
1349 | ||
a1b1b61f SH |
1350 | memset(&event, 0, sizeof event); |
1351 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1352 | event.param.conn.private_data = iw_event->private_data; | |
1353 | event.param.conn.private_data_len = iw_event->private_data_len; | |
8d8293cf SW |
1354 | event.param.conn.initiator_depth = attr.max_qp_init_rd_atom; |
1355 | event.param.conn.responder_resources = attr.max_qp_rd_atom; | |
a1b1b61f | 1356 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1357 | if (ret) { |
1358 | /* User wants to destroy the CM ID */ | |
1359 | conn_id->cm_id.iw = NULL; | |
1360 | cma_exch(conn_id, CMA_DESTROYING); | |
de910bd9 | 1361 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba | 1362 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1363 | goto out; |
07ebafba TT |
1364 | } |
1365 | ||
de910bd9 OG |
1366 | mutex_unlock(&conn_id->handler_mutex); |
1367 | ||
07ebafba TT |
1368 | out: |
1369 | if (dev) | |
1370 | dev_put(dev); | |
de910bd9 | 1371 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1372 | return ret; |
1373 | } | |
1374 | ||
e51060f0 SH |
1375 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1376 | { | |
1377 | struct ib_cm_compare_data compare_data; | |
1378 | struct sockaddr *addr; | |
1379 | __be64 svc_id; | |
1380 | int ret; | |
1381 | ||
1382 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, cma_req_handler, | |
1383 | id_priv); | |
1384 | if (IS_ERR(id_priv->cm_id.ib)) | |
1385 | return PTR_ERR(id_priv->cm_id.ib); | |
1386 | ||
3f446754 | 1387 | addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
e51060f0 SH |
1388 | svc_id = cma_get_service_id(id_priv->id.ps, addr); |
1389 | if (cma_any_addr(addr)) | |
1390 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL); | |
1391 | else { | |
1392 | cma_set_compare_data(id_priv->id.ps, addr, &compare_data); | |
1393 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, &compare_data); | |
1394 | } | |
1395 | ||
1396 | if (ret) { | |
1397 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
1398 | id_priv->cm_id.ib = NULL; | |
1399 | } | |
1400 | ||
1401 | return ret; | |
1402 | } | |
1403 | ||
07ebafba TT |
1404 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1405 | { | |
1406 | int ret; | |
1407 | struct sockaddr_in *sin; | |
1408 | ||
1409 | id_priv->cm_id.iw = iw_create_cm_id(id_priv->id.device, | |
1410 | iw_conn_req_handler, | |
1411 | id_priv); | |
1412 | if (IS_ERR(id_priv->cm_id.iw)) | |
1413 | return PTR_ERR(id_priv->cm_id.iw); | |
1414 | ||
1415 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1416 | id_priv->cm_id.iw->local_addr = *sin; | |
1417 | ||
1418 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
1419 | ||
1420 | if (ret) { | |
1421 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
1422 | id_priv->cm_id.iw = NULL; | |
1423 | } | |
1424 | ||
1425 | return ret; | |
1426 | } | |
1427 | ||
e51060f0 SH |
1428 | static int cma_listen_handler(struct rdma_cm_id *id, |
1429 | struct rdma_cm_event *event) | |
1430 | { | |
1431 | struct rdma_id_private *id_priv = id->context; | |
1432 | ||
1433 | id->context = id_priv->id.context; | |
1434 | id->event_handler = id_priv->id.event_handler; | |
1435 | return id_priv->id.event_handler(id, event); | |
1436 | } | |
1437 | ||
1438 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
1439 | struct cma_device *cma_dev) | |
1440 | { | |
1441 | struct rdma_id_private *dev_id_priv; | |
1442 | struct rdma_cm_id *id; | |
1443 | int ret; | |
1444 | ||
1445 | id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps); | |
1446 | if (IS_ERR(id)) | |
1447 | return; | |
1448 | ||
1449 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
1450 | ||
1451 | dev_id_priv->state = CMA_ADDR_BOUND; | |
1452 | memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr, | |
3f446754 | 1453 | ip_addr_size((struct sockaddr *) &id_priv->id.route.addr.src_addr)); |
e51060f0 SH |
1454 | |
1455 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
1456 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
1457 | atomic_inc(&id_priv->refcount); |
1458 | dev_id_priv->internal_id = 1; | |
e51060f0 SH |
1459 | |
1460 | ret = rdma_listen(id, id_priv->backlog); | |
1461 | if (ret) | |
d02d1f53 | 1462 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 1463 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
1464 | } |
1465 | ||
1466 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
1467 | { | |
1468 | struct cma_device *cma_dev; | |
1469 | ||
1470 | mutex_lock(&lock); | |
1471 | list_add_tail(&id_priv->list, &listen_any_list); | |
1472 | list_for_each_entry(cma_dev, &dev_list, list) | |
1473 | cma_listen_on_dev(id_priv, cma_dev); | |
1474 | mutex_unlock(&lock); | |
1475 | } | |
1476 | ||
1477 | static int cma_bind_any(struct rdma_cm_id *id, sa_family_t af) | |
1478 | { | |
1f5175ad | 1479 | struct sockaddr_storage addr_in; |
e51060f0 SH |
1480 | |
1481 | memset(&addr_in, 0, sizeof addr_in); | |
1f5175ad | 1482 | addr_in.ss_family = af; |
e51060f0 SH |
1483 | return rdma_bind_addr(id, (struct sockaddr *) &addr_in); |
1484 | } | |
1485 | ||
1486 | int rdma_listen(struct rdma_cm_id *id, int backlog) | |
1487 | { | |
1488 | struct rdma_id_private *id_priv; | |
1489 | int ret; | |
1490 | ||
1491 | id_priv = container_of(id, struct rdma_id_private, id); | |
1492 | if (id_priv->state == CMA_IDLE) { | |
1493 | ret = cma_bind_any(id, AF_INET); | |
1494 | if (ret) | |
1495 | return ret; | |
1496 | } | |
1497 | ||
1498 | if (!cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_LISTEN)) | |
1499 | return -EINVAL; | |
1500 | ||
1501 | id_priv->backlog = backlog; | |
1502 | if (id->device) { | |
07ebafba TT |
1503 | switch (rdma_node_get_transport(id->device->node_type)) { |
1504 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
1505 | ret = cma_ib_listen(id_priv); |
1506 | if (ret) | |
1507 | goto err; | |
1508 | break; | |
07ebafba TT |
1509 | case RDMA_TRANSPORT_IWARP: |
1510 | ret = cma_iw_listen(id_priv, backlog); | |
1511 | if (ret) | |
1512 | goto err; | |
1513 | break; | |
e51060f0 SH |
1514 | default: |
1515 | ret = -ENOSYS; | |
1516 | goto err; | |
1517 | } | |
1518 | } else | |
1519 | cma_listen_on_all(id_priv); | |
1520 | ||
1521 | return 0; | |
1522 | err: | |
1523 | id_priv->backlog = 0; | |
1524 | cma_comp_exch(id_priv, CMA_LISTEN, CMA_ADDR_BOUND); | |
1525 | return ret; | |
1526 | } | |
1527 | EXPORT_SYMBOL(rdma_listen); | |
1528 | ||
a81c994d SH |
1529 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
1530 | { | |
1531 | struct rdma_id_private *id_priv; | |
1532 | ||
1533 | id_priv = container_of(id, struct rdma_id_private, id); | |
1534 | id_priv->tos = (u8) tos; | |
1535 | } | |
1536 | EXPORT_SYMBOL(rdma_set_service_type); | |
1537 | ||
e51060f0 SH |
1538 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
1539 | void *context) | |
1540 | { | |
1541 | struct cma_work *work = context; | |
1542 | struct rdma_route *route; | |
1543 | ||
1544 | route = &work->id->id.route; | |
1545 | ||
1546 | if (!status) { | |
1547 | route->num_paths = 1; | |
1548 | *route->path_rec = *path_rec; | |
1549 | } else { | |
1550 | work->old_state = CMA_ROUTE_QUERY; | |
1551 | work->new_state = CMA_ADDR_RESOLVED; | |
1552 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; | |
8f0472d3 | 1553 | work->event.status = status; |
e51060f0 SH |
1554 | } |
1555 | ||
1556 | queue_work(cma_wq, &work->work); | |
1557 | } | |
1558 | ||
1559 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
1560 | struct cma_work *work) | |
1561 | { | |
a81c994d | 1562 | struct rdma_addr *addr = &id_priv->id.route.addr; |
e51060f0 | 1563 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
1564 | ib_sa_comp_mask comp_mask; |
1565 | struct sockaddr_in6 *sin6; | |
e51060f0 SH |
1566 | |
1567 | memset(&path_rec, 0, sizeof path_rec); | |
a81c994d SH |
1568 | ib_addr_get_sgid(&addr->dev_addr, &path_rec.sgid); |
1569 | ib_addr_get_dgid(&addr->dev_addr, &path_rec.dgid); | |
1570 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr)); | |
e51060f0 | 1571 | path_rec.numb_path = 1; |
962063e6 | 1572 | path_rec.reversible = 1; |
3f446754 RD |
1573 | path_rec.service_id = cma_get_service_id(id_priv->id.ps, |
1574 | (struct sockaddr *) &addr->dst_addr); | |
a81c994d SH |
1575 | |
1576 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
1577 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
1578 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
1579 | ||
3f446754 | 1580 | if (addr->src_addr.ss_family == AF_INET) { |
a81c994d SH |
1581 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
1582 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
1583 | } else { | |
1584 | sin6 = (struct sockaddr_in6 *) &addr->src_addr; | |
1585 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); | |
1586 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
1587 | } | |
e51060f0 | 1588 | |
c1a0b23b | 1589 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
1590 | id_priv->id.port_num, &path_rec, |
1591 | comp_mask, timeout_ms, | |
1592 | GFP_KERNEL, cma_query_handler, | |
1593 | work, &id_priv->query); | |
e51060f0 SH |
1594 | |
1595 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
1596 | } | |
1597 | ||
c4028958 | 1598 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 1599 | { |
c4028958 | 1600 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
1601 | struct rdma_id_private *id_priv = work->id; |
1602 | int destroy = 0; | |
1603 | ||
de910bd9 | 1604 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
1605 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
1606 | goto out; | |
1607 | ||
1608 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
1609 | cma_exch(id_priv, CMA_DESTROYING); | |
1610 | destroy = 1; | |
1611 | } | |
1612 | out: | |
de910bd9 | 1613 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1614 | cma_deref_id(id_priv); |
1615 | if (destroy) | |
1616 | rdma_destroy_id(&id_priv->id); | |
1617 | kfree(work); | |
1618 | } | |
1619 | ||
dd5bdff8 OG |
1620 | static void cma_ndev_work_handler(struct work_struct *_work) |
1621 | { | |
1622 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
1623 | struct rdma_id_private *id_priv = work->id; | |
1624 | int destroy = 0; | |
1625 | ||
1626 | mutex_lock(&id_priv->handler_mutex); | |
1627 | if (id_priv->state == CMA_DESTROYING || | |
1628 | id_priv->state == CMA_DEVICE_REMOVAL) | |
1629 | goto out; | |
1630 | ||
1631 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
1632 | cma_exch(id_priv, CMA_DESTROYING); | |
1633 | destroy = 1; | |
1634 | } | |
1635 | ||
1636 | out: | |
1637 | mutex_unlock(&id_priv->handler_mutex); | |
1638 | cma_deref_id(id_priv); | |
1639 | if (destroy) | |
1640 | rdma_destroy_id(&id_priv->id); | |
1641 | kfree(work); | |
1642 | } | |
1643 | ||
e51060f0 SH |
1644 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
1645 | { | |
1646 | struct rdma_route *route = &id_priv->id.route; | |
1647 | struct cma_work *work; | |
1648 | int ret; | |
1649 | ||
1650 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1651 | if (!work) | |
1652 | return -ENOMEM; | |
1653 | ||
1654 | work->id = id_priv; | |
c4028958 | 1655 | INIT_WORK(&work->work, cma_work_handler); |
e51060f0 SH |
1656 | work->old_state = CMA_ROUTE_QUERY; |
1657 | work->new_state = CMA_ROUTE_RESOLVED; | |
1658 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
1659 | ||
1660 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1661 | if (!route->path_rec) { | |
1662 | ret = -ENOMEM; | |
1663 | goto err1; | |
1664 | } | |
1665 | ||
1666 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
1667 | if (ret) | |
1668 | goto err2; | |
1669 | ||
1670 | return 0; | |
1671 | err2: | |
1672 | kfree(route->path_rec); | |
1673 | route->path_rec = NULL; | |
1674 | err1: | |
1675 | kfree(work); | |
1676 | return ret; | |
1677 | } | |
1678 | ||
1679 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
1680 | struct ib_sa_path_rec *path_rec, int num_paths) | |
1681 | { | |
1682 | struct rdma_id_private *id_priv; | |
1683 | int ret; | |
1684 | ||
1685 | id_priv = container_of(id, struct rdma_id_private, id); | |
1686 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ROUTE_RESOLVED)) | |
1687 | return -EINVAL; | |
1688 | ||
1689 | id->route.path_rec = kmalloc(sizeof *path_rec * num_paths, GFP_KERNEL); | |
1690 | if (!id->route.path_rec) { | |
1691 | ret = -ENOMEM; | |
1692 | goto err; | |
1693 | } | |
1694 | ||
1695 | memcpy(id->route.path_rec, path_rec, sizeof *path_rec * num_paths); | |
1696 | return 0; | |
1697 | err: | |
1698 | cma_comp_exch(id_priv, CMA_ROUTE_RESOLVED, CMA_ADDR_RESOLVED); | |
1699 | return ret; | |
1700 | } | |
1701 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
1702 | ||
07ebafba TT |
1703 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
1704 | { | |
1705 | struct cma_work *work; | |
1706 | ||
1707 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1708 | if (!work) | |
1709 | return -ENOMEM; | |
1710 | ||
1711 | work->id = id_priv; | |
c4028958 | 1712 | INIT_WORK(&work->work, cma_work_handler); |
07ebafba TT |
1713 | work->old_state = CMA_ROUTE_QUERY; |
1714 | work->new_state = CMA_ROUTE_RESOLVED; | |
1715 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
1716 | queue_work(cma_wq, &work->work); | |
1717 | return 0; | |
1718 | } | |
1719 | ||
e51060f0 SH |
1720 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
1721 | { | |
1722 | struct rdma_id_private *id_priv; | |
1723 | int ret; | |
1724 | ||
1725 | id_priv = container_of(id, struct rdma_id_private, id); | |
1726 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ROUTE_QUERY)) | |
1727 | return -EINVAL; | |
1728 | ||
1729 | atomic_inc(&id_priv->refcount); | |
07ebafba TT |
1730 | switch (rdma_node_get_transport(id->device->node_type)) { |
1731 | case RDMA_TRANSPORT_IB: | |
e51060f0 SH |
1732 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
1733 | break; | |
07ebafba TT |
1734 | case RDMA_TRANSPORT_IWARP: |
1735 | ret = cma_resolve_iw_route(id_priv, timeout_ms); | |
1736 | break; | |
e51060f0 SH |
1737 | default: |
1738 | ret = -ENOSYS; | |
1739 | break; | |
1740 | } | |
1741 | if (ret) | |
1742 | goto err; | |
1743 | ||
1744 | return 0; | |
1745 | err: | |
1746 | cma_comp_exch(id_priv, CMA_ROUTE_QUERY, CMA_ADDR_RESOLVED); | |
1747 | cma_deref_id(id_priv); | |
1748 | return ret; | |
1749 | } | |
1750 | EXPORT_SYMBOL(rdma_resolve_route); | |
1751 | ||
1752 | static int cma_bind_loopback(struct rdma_id_private *id_priv) | |
1753 | { | |
1754 | struct cma_device *cma_dev; | |
1755 | struct ib_port_attr port_attr; | |
f0ee3404 | 1756 | union ib_gid gid; |
e51060f0 SH |
1757 | u16 pkey; |
1758 | int ret; | |
1759 | u8 p; | |
1760 | ||
1761 | mutex_lock(&lock); | |
e82153b5 KK |
1762 | if (list_empty(&dev_list)) { |
1763 | ret = -ENODEV; | |
1764 | goto out; | |
1765 | } | |
e51060f0 SH |
1766 | list_for_each_entry(cma_dev, &dev_list, list) |
1767 | for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) | |
e82153b5 | 1768 | if (!ib_query_port(cma_dev->device, p, &port_attr) && |
e51060f0 SH |
1769 | port_attr.state == IB_PORT_ACTIVE) |
1770 | goto port_found; | |
1771 | ||
e82153b5 KK |
1772 | p = 1; |
1773 | cma_dev = list_entry(dev_list.next, struct cma_device, list); | |
e51060f0 SH |
1774 | |
1775 | port_found: | |
f0ee3404 | 1776 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
1777 | if (ret) |
1778 | goto out; | |
1779 | ||
1780 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
1781 | if (ret) | |
1782 | goto out; | |
1783 | ||
f0ee3404 | 1784 | ib_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
e51060f0 SH |
1785 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
1786 | id_priv->id.port_num = p; | |
1787 | cma_attach_to_dev(id_priv, cma_dev); | |
1788 | out: | |
1789 | mutex_unlock(&lock); | |
1790 | return ret; | |
1791 | } | |
1792 | ||
1793 | static void addr_handler(int status, struct sockaddr *src_addr, | |
1794 | struct rdma_dev_addr *dev_addr, void *context) | |
1795 | { | |
1796 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 1797 | struct rdma_cm_event event; |
e51060f0 | 1798 | |
a1b1b61f | 1799 | memset(&event, 0, sizeof event); |
de910bd9 | 1800 | mutex_lock(&id_priv->handler_mutex); |
61a73c70 SH |
1801 | |
1802 | /* | |
1803 | * Grab mutex to block rdma_destroy_id() from removing the device while | |
1804 | * we're trying to acquire it. | |
1805 | */ | |
1806 | mutex_lock(&lock); | |
1807 | if (!cma_comp_exch(id_priv, CMA_ADDR_QUERY, CMA_ADDR_RESOLVED)) { | |
1808 | mutex_unlock(&lock); | |
1809 | goto out; | |
1810 | } | |
1811 | ||
1812 | if (!status && !id_priv->cma_dev) | |
e51060f0 | 1813 | status = cma_acquire_dev(id_priv); |
61a73c70 | 1814 | mutex_unlock(&lock); |
e51060f0 SH |
1815 | |
1816 | if (status) { | |
61a73c70 | 1817 | if (!cma_comp_exch(id_priv, CMA_ADDR_RESOLVED, CMA_ADDR_BOUND)) |
e51060f0 | 1818 | goto out; |
a1b1b61f SH |
1819 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
1820 | event.status = status; | |
e51060f0 | 1821 | } else { |
e51060f0 SH |
1822 | memcpy(&id_priv->id.route.addr.src_addr, src_addr, |
1823 | ip_addr_size(src_addr)); | |
a1b1b61f | 1824 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 SH |
1825 | } |
1826 | ||
a1b1b61f | 1827 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
e51060f0 | 1828 | cma_exch(id_priv, CMA_DESTROYING); |
de910bd9 | 1829 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1830 | cma_deref_id(id_priv); |
1831 | rdma_destroy_id(&id_priv->id); | |
1832 | return; | |
1833 | } | |
1834 | out: | |
de910bd9 | 1835 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1836 | cma_deref_id(id_priv); |
1837 | } | |
1838 | ||
1839 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
1840 | { | |
1841 | struct cma_work *work; | |
1842 | struct sockaddr_in *src_in, *dst_in; | |
f0ee3404 | 1843 | union ib_gid gid; |
e51060f0 SH |
1844 | int ret; |
1845 | ||
1846 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1847 | if (!work) | |
1848 | return -ENOMEM; | |
1849 | ||
1850 | if (!id_priv->cma_dev) { | |
1851 | ret = cma_bind_loopback(id_priv); | |
1852 | if (ret) | |
1853 | goto err; | |
1854 | } | |
1855 | ||
f0ee3404 MT |
1856 | ib_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
1857 | ib_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 1858 | |
3f446754 | 1859 | if (cma_zero_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)) { |
e51060f0 SH |
1860 | src_in = (struct sockaddr_in *)&id_priv->id.route.addr.src_addr; |
1861 | dst_in = (struct sockaddr_in *)&id_priv->id.route.addr.dst_addr; | |
1862 | src_in->sin_family = dst_in->sin_family; | |
1863 | src_in->sin_addr.s_addr = dst_in->sin_addr.s_addr; | |
1864 | } | |
1865 | ||
1866 | work->id = id_priv; | |
c4028958 | 1867 | INIT_WORK(&work->work, cma_work_handler); |
e51060f0 SH |
1868 | work->old_state = CMA_ADDR_QUERY; |
1869 | work->new_state = CMA_ADDR_RESOLVED; | |
1870 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
1871 | queue_work(cma_wq, &work->work); | |
1872 | return 0; | |
1873 | err: | |
1874 | kfree(work); | |
1875 | return ret; | |
1876 | } | |
1877 | ||
1878 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
1879 | struct sockaddr *dst_addr) | |
1880 | { | |
1881 | if (src_addr && src_addr->sa_family) | |
1882 | return rdma_bind_addr(id, src_addr); | |
1883 | else | |
1884 | return cma_bind_any(id, dst_addr->sa_family); | |
1885 | } | |
1886 | ||
1887 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
1888 | struct sockaddr *dst_addr, int timeout_ms) | |
1889 | { | |
1890 | struct rdma_id_private *id_priv; | |
1891 | int ret; | |
1892 | ||
1893 | id_priv = container_of(id, struct rdma_id_private, id); | |
1894 | if (id_priv->state == CMA_IDLE) { | |
1895 | ret = cma_bind_addr(id, src_addr, dst_addr); | |
1896 | if (ret) | |
1897 | return ret; | |
1898 | } | |
1899 | ||
1900 | if (!cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_ADDR_QUERY)) | |
1901 | return -EINVAL; | |
1902 | ||
1903 | atomic_inc(&id_priv->refcount); | |
1904 | memcpy(&id->route.addr.dst_addr, dst_addr, ip_addr_size(dst_addr)); | |
1905 | if (cma_any_addr(dst_addr)) | |
1906 | ret = cma_resolve_loopback(id_priv); | |
1907 | else | |
3f446754 | 1908 | ret = rdma_resolve_ip(&addr_client, (struct sockaddr *) &id->route.addr.src_addr, |
7a118df3 | 1909 | dst_addr, &id->route.addr.dev_addr, |
e51060f0 SH |
1910 | timeout_ms, addr_handler, id_priv); |
1911 | if (ret) | |
1912 | goto err; | |
1913 | ||
1914 | return 0; | |
1915 | err: | |
1916 | cma_comp_exch(id_priv, CMA_ADDR_QUERY, CMA_ADDR_BOUND); | |
1917 | cma_deref_id(id_priv); | |
1918 | return ret; | |
1919 | } | |
1920 | EXPORT_SYMBOL(rdma_resolve_addr); | |
1921 | ||
1922 | static void cma_bind_port(struct rdma_bind_list *bind_list, | |
1923 | struct rdma_id_private *id_priv) | |
1924 | { | |
1925 | struct sockaddr_in *sin; | |
1926 | ||
1927 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1928 | sin->sin_port = htons(bind_list->port); | |
1929 | id_priv->bind_list = bind_list; | |
1930 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
1931 | } | |
1932 | ||
1933 | static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, | |
1934 | unsigned short snum) | |
1935 | { | |
1936 | struct rdma_bind_list *bind_list; | |
aedec080 | 1937 | int port, ret; |
e51060f0 | 1938 | |
cb164b8c | 1939 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
1940 | if (!bind_list) |
1941 | return -ENOMEM; | |
1942 | ||
aedec080 SH |
1943 | do { |
1944 | ret = idr_get_new_above(ps, bind_list, snum, &port); | |
1945 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); | |
1946 | ||
1947 | if (ret) | |
1948 | goto err1; | |
1949 | ||
1950 | if (port != snum) { | |
1951 | ret = -EADDRNOTAVAIL; | |
1952 | goto err2; | |
1953 | } | |
1954 | ||
1955 | bind_list->ps = ps; | |
1956 | bind_list->port = (unsigned short) port; | |
1957 | cma_bind_port(bind_list, id_priv); | |
1958 | return 0; | |
1959 | err2: | |
1960 | idr_remove(ps, port); | |
1961 | err1: | |
1962 | kfree(bind_list); | |
1963 | return ret; | |
1964 | } | |
e51060f0 | 1965 | |
aedec080 SH |
1966 | static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv) |
1967 | { | |
1968 | struct rdma_bind_list *bind_list; | |
227b60f5 | 1969 | int port, ret, low, high; |
aedec080 SH |
1970 | |
1971 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); | |
1972 | if (!bind_list) | |
1973 | return -ENOMEM; | |
1974 | ||
1975 | retry: | |
227b60f5 | 1976 | /* FIXME: add proper port randomization per like inet_csk_get_port */ |
e51060f0 | 1977 | do { |
aedec080 | 1978 | ret = idr_get_new_above(ps, bind_list, next_port, &port); |
e51060f0 SH |
1979 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); |
1980 | ||
1981 | if (ret) | |
aedec080 | 1982 | goto err1; |
e51060f0 | 1983 | |
227b60f5 SH |
1984 | inet_get_local_port_range(&low, &high); |
1985 | if (port > high) { | |
1986 | if (next_port != low) { | |
aedec080 | 1987 | idr_remove(ps, port); |
227b60f5 | 1988 | next_port = low; |
aedec080 SH |
1989 | goto retry; |
1990 | } | |
e51060f0 | 1991 | ret = -EADDRNOTAVAIL; |
aedec080 | 1992 | goto err2; |
e51060f0 SH |
1993 | } |
1994 | ||
227b60f5 SH |
1995 | if (port == high) |
1996 | next_port = low; | |
aedec080 SH |
1997 | else |
1998 | next_port = port + 1; | |
1999 | ||
e51060f0 SH |
2000 | bind_list->ps = ps; |
2001 | bind_list->port = (unsigned short) port; | |
2002 | cma_bind_port(bind_list, id_priv); | |
2003 | return 0; | |
aedec080 SH |
2004 | err2: |
2005 | idr_remove(ps, port); | |
2006 | err1: | |
e51060f0 SH |
2007 | kfree(bind_list); |
2008 | return ret; | |
2009 | } | |
2010 | ||
2011 | static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv) | |
2012 | { | |
2013 | struct rdma_id_private *cur_id; | |
2014 | struct sockaddr_in *sin, *cur_sin; | |
2015 | struct rdma_bind_list *bind_list; | |
2016 | struct hlist_node *node; | |
2017 | unsigned short snum; | |
2018 | ||
2019 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
2020 | snum = ntohs(sin->sin_port); | |
2021 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
2022 | return -EACCES; | |
2023 | ||
2024 | bind_list = idr_find(ps, snum); | |
2025 | if (!bind_list) | |
2026 | return cma_alloc_port(ps, id_priv, snum); | |
2027 | ||
2028 | /* | |
2029 | * We don't support binding to any address if anyone is bound to | |
2030 | * a specific address on the same port. | |
2031 | */ | |
3f446754 | 2032 | if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr)) |
e51060f0 SH |
2033 | return -EADDRNOTAVAIL; |
2034 | ||
2035 | hlist_for_each_entry(cur_id, node, &bind_list->owners, node) { | |
3f446754 | 2036 | if (cma_any_addr((struct sockaddr *) &cur_id->id.route.addr.src_addr)) |
e51060f0 | 2037 | return -EADDRNOTAVAIL; |
3cd96564 | 2038 | |
e51060f0 SH |
2039 | cur_sin = (struct sockaddr_in *) &cur_id->id.route.addr.src_addr; |
2040 | if (sin->sin_addr.s_addr == cur_sin->sin_addr.s_addr) | |
2041 | return -EADDRINUSE; | |
2042 | } | |
2043 | ||
2044 | cma_bind_port(bind_list, id_priv); | |
2045 | return 0; | |
2046 | } | |
2047 | ||
2048 | static int cma_get_port(struct rdma_id_private *id_priv) | |
2049 | { | |
2050 | struct idr *ps; | |
2051 | int ret; | |
2052 | ||
2053 | switch (id_priv->id.ps) { | |
2054 | case RDMA_PS_SDP: | |
2055 | ps = &sdp_ps; | |
2056 | break; | |
2057 | case RDMA_PS_TCP: | |
2058 | ps = &tcp_ps; | |
2059 | break; | |
628e5f6d SH |
2060 | case RDMA_PS_UDP: |
2061 | ps = &udp_ps; | |
2062 | break; | |
c8f6a362 SH |
2063 | case RDMA_PS_IPOIB: |
2064 | ps = &ipoib_ps; | |
2065 | break; | |
e51060f0 SH |
2066 | default: |
2067 | return -EPROTONOSUPPORT; | |
2068 | } | |
2069 | ||
2070 | mutex_lock(&lock); | |
3f446754 | 2071 | if (cma_any_port((struct sockaddr *) &id_priv->id.route.addr.src_addr)) |
aedec080 | 2072 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2073 | else |
2074 | ret = cma_use_port(ps, id_priv); | |
2075 | mutex_unlock(&lock); | |
2076 | ||
2077 | return ret; | |
2078 | } | |
2079 | ||
2080 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) | |
2081 | { | |
2082 | struct rdma_id_private *id_priv; | |
2083 | int ret; | |
2084 | ||
1f5175ad | 2085 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6) |
e51060f0 SH |
2086 | return -EAFNOSUPPORT; |
2087 | ||
2088 | id_priv = container_of(id, struct rdma_id_private, id); | |
2089 | if (!cma_comp_exch(id_priv, CMA_IDLE, CMA_ADDR_BOUND)) | |
2090 | return -EINVAL; | |
2091 | ||
2092 | if (!cma_any_addr(addr)) { | |
2093 | ret = rdma_translate_ip(addr, &id->route.addr.dev_addr); | |
e51060f0 | 2094 | if (ret) |
255d0c14 KK |
2095 | goto err1; |
2096 | ||
2097 | mutex_lock(&lock); | |
2098 | ret = cma_acquire_dev(id_priv); | |
2099 | mutex_unlock(&lock); | |
2100 | if (ret) | |
2101 | goto err1; | |
e51060f0 SH |
2102 | } |
2103 | ||
2104 | memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr)); | |
2105 | ret = cma_get_port(id_priv); | |
2106 | if (ret) | |
255d0c14 | 2107 | goto err2; |
e51060f0 SH |
2108 | |
2109 | return 0; | |
255d0c14 KK |
2110 | err2: |
2111 | if (!cma_any_addr(addr)) { | |
2112 | mutex_lock(&lock); | |
2113 | cma_detach_from_dev(id_priv); | |
2114 | mutex_unlock(&lock); | |
2115 | } | |
2116 | err1: | |
e51060f0 SH |
2117 | cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_IDLE); |
2118 | return ret; | |
2119 | } | |
2120 | EXPORT_SYMBOL(rdma_bind_addr); | |
2121 | ||
2122 | static int cma_format_hdr(void *hdr, enum rdma_port_space ps, | |
2123 | struct rdma_route *route) | |
2124 | { | |
e51060f0 SH |
2125 | struct cma_hdr *cma_hdr; |
2126 | struct sdp_hh *sdp_hdr; | |
2127 | ||
1f5175ad AS |
2128 | if (route->addr.src_addr.ss_family == AF_INET) { |
2129 | struct sockaddr_in *src4, *dst4; | |
2130 | ||
2131 | src4 = (struct sockaddr_in *) &route->addr.src_addr; | |
2132 | dst4 = (struct sockaddr_in *) &route->addr.dst_addr; | |
2133 | ||
2134 | switch (ps) { | |
2135 | case RDMA_PS_SDP: | |
2136 | sdp_hdr = hdr; | |
2137 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2138 | return -EINVAL; | |
2139 | sdp_set_ip_ver(sdp_hdr, 4); | |
2140 | sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2141 | sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2142 | sdp_hdr->port = src4->sin_port; | |
2143 | break; | |
2144 | default: | |
2145 | cma_hdr = hdr; | |
2146 | cma_hdr->cma_version = CMA_VERSION; | |
2147 | cma_set_ip_ver(cma_hdr, 4); | |
2148 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2149 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2150 | cma_hdr->port = src4->sin_port; | |
2151 | break; | |
2152 | } | |
2153 | } else { | |
2154 | struct sockaddr_in6 *src6, *dst6; | |
2155 | ||
2156 | src6 = (struct sockaddr_in6 *) &route->addr.src_addr; | |
2157 | dst6 = (struct sockaddr_in6 *) &route->addr.dst_addr; | |
2158 | ||
2159 | switch (ps) { | |
2160 | case RDMA_PS_SDP: | |
2161 | sdp_hdr = hdr; | |
2162 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2163 | return -EINVAL; | |
2164 | sdp_set_ip_ver(sdp_hdr, 6); | |
2165 | sdp_hdr->src_addr.ip6 = src6->sin6_addr; | |
2166 | sdp_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2167 | sdp_hdr->port = src6->sin6_port; | |
2168 | break; | |
2169 | default: | |
2170 | cma_hdr = hdr; | |
2171 | cma_hdr->cma_version = CMA_VERSION; | |
2172 | cma_set_ip_ver(cma_hdr, 6); | |
2173 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
2174 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2175 | cma_hdr->port = src6->sin6_port; | |
2176 | break; | |
2177 | } | |
e51060f0 SH |
2178 | } |
2179 | return 0; | |
2180 | } | |
2181 | ||
628e5f6d SH |
2182 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
2183 | struct ib_cm_event *ib_event) | |
2184 | { | |
2185 | struct rdma_id_private *id_priv = cm_id->context; | |
2186 | struct rdma_cm_event event; | |
2187 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
2188 | int ret = 0; | |
2189 | ||
de910bd9 | 2190 | if (cma_disable_callback(id_priv, CMA_CONNECT)) |
8aa08602 | 2191 | return 0; |
628e5f6d | 2192 | |
8aa08602 | 2193 | memset(&event, 0, sizeof event); |
628e5f6d SH |
2194 | switch (ib_event->event) { |
2195 | case IB_CM_SIDR_REQ_ERROR: | |
2196 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2197 | event.status = -ETIMEDOUT; | |
2198 | break; | |
2199 | case IB_CM_SIDR_REP_RECEIVED: | |
2200 | event.param.ud.private_data = ib_event->private_data; | |
2201 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
2202 | if (rep->status != IB_SIDR_SUCCESS) { | |
2203 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2204 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
2205 | break; | |
2206 | } | |
d2ca39f2 YE |
2207 | ret = cma_set_qkey(id_priv); |
2208 | if (ret) { | |
2209 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
2210 | event.status = -EINVAL; | |
2211 | break; | |
2212 | } | |
c8f6a362 | 2213 | if (id_priv->qkey != rep->qkey) { |
628e5f6d SH |
2214 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
2215 | event.status = -EINVAL; | |
2216 | break; | |
2217 | } | |
2218 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
2219 | id_priv->id.route.path_rec, | |
2220 | &event.param.ud.ah_attr); | |
2221 | event.param.ud.qp_num = rep->qpn; | |
2222 | event.param.ud.qkey = rep->qkey; | |
2223 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
2224 | event.status = 0; | |
2225 | break; | |
2226 | default: | |
468f2239 | 2227 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
2228 | ib_event->event); |
2229 | goto out; | |
2230 | } | |
2231 | ||
2232 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2233 | if (ret) { | |
2234 | /* Destroy the CM ID by returning a non-zero value. */ | |
2235 | id_priv->cm_id.ib = NULL; | |
2236 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 2237 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2238 | rdma_destroy_id(&id_priv->id); |
2239 | return ret; | |
2240 | } | |
2241 | out: | |
de910bd9 | 2242 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2243 | return ret; |
2244 | } | |
2245 | ||
2246 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
2247 | struct rdma_conn_param *conn_param) | |
2248 | { | |
2249 | struct ib_cm_sidr_req_param req; | |
2250 | struct rdma_route *route; | |
2251 | int ret; | |
2252 | ||
2253 | req.private_data_len = sizeof(struct cma_hdr) + | |
2254 | conn_param->private_data_len; | |
2255 | req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2256 | if (!req.private_data) | |
2257 | return -ENOMEM; | |
2258 | ||
2259 | if (conn_param->private_data && conn_param->private_data_len) | |
2260 | memcpy((void *) req.private_data + sizeof(struct cma_hdr), | |
2261 | conn_param->private_data, conn_param->private_data_len); | |
2262 | ||
2263 | route = &id_priv->id.route; | |
2264 | ret = cma_format_hdr((void *) req.private_data, id_priv->id.ps, route); | |
2265 | if (ret) | |
2266 | goto out; | |
2267 | ||
2268 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, | |
2269 | cma_sidr_rep_handler, id_priv); | |
2270 | if (IS_ERR(id_priv->cm_id.ib)) { | |
2271 | ret = PTR_ERR(id_priv->cm_id.ib); | |
2272 | goto out; | |
2273 | } | |
2274 | ||
2275 | req.path = route->path_rec; | |
2276 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2277 | (struct sockaddr *) &route->addr.dst_addr); |
628e5f6d SH |
2278 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
2279 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2280 | ||
2281 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
2282 | if (ret) { | |
2283 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2284 | id_priv->cm_id.ib = NULL; | |
2285 | } | |
2286 | out: | |
2287 | kfree(req.private_data); | |
2288 | return ret; | |
2289 | } | |
2290 | ||
e51060f0 SH |
2291 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
2292 | struct rdma_conn_param *conn_param) | |
2293 | { | |
2294 | struct ib_cm_req_param req; | |
2295 | struct rdma_route *route; | |
2296 | void *private_data; | |
2297 | int offset, ret; | |
2298 | ||
2299 | memset(&req, 0, sizeof req); | |
2300 | offset = cma_user_data_offset(id_priv->id.ps); | |
2301 | req.private_data_len = offset + conn_param->private_data_len; | |
2302 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2303 | if (!private_data) | |
2304 | return -ENOMEM; | |
2305 | ||
2306 | if (conn_param->private_data && conn_param->private_data_len) | |
2307 | memcpy(private_data + offset, conn_param->private_data, | |
2308 | conn_param->private_data_len); | |
2309 | ||
2310 | id_priv->cm_id.ib = ib_create_cm_id(id_priv->id.device, cma_ib_handler, | |
2311 | id_priv); | |
2312 | if (IS_ERR(id_priv->cm_id.ib)) { | |
2313 | ret = PTR_ERR(id_priv->cm_id.ib); | |
2314 | goto out; | |
2315 | } | |
2316 | ||
2317 | route = &id_priv->id.route; | |
2318 | ret = cma_format_hdr(private_data, id_priv->id.ps, route); | |
2319 | if (ret) | |
2320 | goto out; | |
2321 | req.private_data = private_data; | |
2322 | ||
2323 | req.primary_path = &route->path_rec[0]; | |
2324 | if (route->num_paths == 2) | |
2325 | req.alternate_path = &route->path_rec[1]; | |
2326 | ||
2327 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2328 | (struct sockaddr *) &route->addr.dst_addr); |
e51060f0 | 2329 | req.qp_num = id_priv->qp_num; |
9b2e9c0c | 2330 | req.qp_type = IB_QPT_RC; |
e51060f0 SH |
2331 | req.starting_psn = id_priv->seq_num; |
2332 | req.responder_resources = conn_param->responder_resources; | |
2333 | req.initiator_depth = conn_param->initiator_depth; | |
2334 | req.flow_control = conn_param->flow_control; | |
2335 | req.retry_count = conn_param->retry_count; | |
2336 | req.rnr_retry_count = conn_param->rnr_retry_count; | |
2337 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2338 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2339 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2340 | req.srq = id_priv->srq ? 1 : 0; | |
2341 | ||
2342 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
2343 | out: | |
675a027c KK |
2344 | if (ret && !IS_ERR(id_priv->cm_id.ib)) { |
2345 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2346 | id_priv->cm_id.ib = NULL; | |
2347 | } | |
2348 | ||
e51060f0 SH |
2349 | kfree(private_data); |
2350 | return ret; | |
2351 | } | |
2352 | ||
07ebafba TT |
2353 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
2354 | struct rdma_conn_param *conn_param) | |
2355 | { | |
2356 | struct iw_cm_id *cm_id; | |
2357 | struct sockaddr_in* sin; | |
2358 | int ret; | |
2359 | struct iw_cm_conn_param iw_param; | |
2360 | ||
2361 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
2362 | if (IS_ERR(cm_id)) { | |
2363 | ret = PTR_ERR(cm_id); | |
2364 | goto out; | |
2365 | } | |
2366 | ||
2367 | id_priv->cm_id.iw = cm_id; | |
2368 | ||
2369 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.src_addr; | |
2370 | cm_id->local_addr = *sin; | |
2371 | ||
2372 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.dst_addr; | |
2373 | cm_id->remote_addr = *sin; | |
2374 | ||
5851bb89 | 2375 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
2376 | if (ret) |
2377 | goto out; | |
07ebafba TT |
2378 | |
2379 | iw_param.ord = conn_param->initiator_depth; | |
2380 | iw_param.ird = conn_param->responder_resources; | |
2381 | iw_param.private_data = conn_param->private_data; | |
2382 | iw_param.private_data_len = conn_param->private_data_len; | |
2383 | if (id_priv->id.qp) | |
2384 | iw_param.qpn = id_priv->qp_num; | |
2385 | else | |
2386 | iw_param.qpn = conn_param->qp_num; | |
2387 | ret = iw_cm_connect(cm_id, &iw_param); | |
2388 | out: | |
675a027c KK |
2389 | if (ret && !IS_ERR(cm_id)) { |
2390 | iw_destroy_cm_id(cm_id); | |
2391 | id_priv->cm_id.iw = NULL; | |
2392 | } | |
07ebafba TT |
2393 | return ret; |
2394 | } | |
2395 | ||
e51060f0 SH |
2396 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2397 | { | |
2398 | struct rdma_id_private *id_priv; | |
2399 | int ret; | |
2400 | ||
2401 | id_priv = container_of(id, struct rdma_id_private, id); | |
2402 | if (!cma_comp_exch(id_priv, CMA_ROUTE_RESOLVED, CMA_CONNECT)) | |
2403 | return -EINVAL; | |
2404 | ||
2405 | if (!id->qp) { | |
2406 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2407 | id_priv->srq = conn_param->srq; |
2408 | } | |
2409 | ||
07ebafba TT |
2410 | switch (rdma_node_get_transport(id->device->node_type)) { |
2411 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2412 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2413 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
2414 | else | |
2415 | ret = cma_connect_ib(id_priv, conn_param); | |
e51060f0 | 2416 | break; |
07ebafba TT |
2417 | case RDMA_TRANSPORT_IWARP: |
2418 | ret = cma_connect_iw(id_priv, conn_param); | |
2419 | break; | |
e51060f0 SH |
2420 | default: |
2421 | ret = -ENOSYS; | |
2422 | break; | |
2423 | } | |
2424 | if (ret) | |
2425 | goto err; | |
2426 | ||
2427 | return 0; | |
2428 | err: | |
2429 | cma_comp_exch(id_priv, CMA_CONNECT, CMA_ROUTE_RESOLVED); | |
2430 | return ret; | |
2431 | } | |
2432 | EXPORT_SYMBOL(rdma_connect); | |
2433 | ||
2434 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
2435 | struct rdma_conn_param *conn_param) | |
2436 | { | |
2437 | struct ib_cm_rep_param rep; | |
5851bb89 | 2438 | int ret; |
0fe313b0 | 2439 | |
5851bb89 SH |
2440 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
2441 | if (ret) | |
2442 | goto out; | |
0fe313b0 | 2443 | |
5851bb89 SH |
2444 | ret = cma_modify_qp_rts(id_priv, conn_param); |
2445 | if (ret) | |
2446 | goto out; | |
e51060f0 SH |
2447 | |
2448 | memset(&rep, 0, sizeof rep); | |
2449 | rep.qp_num = id_priv->qp_num; | |
2450 | rep.starting_psn = id_priv->seq_num; | |
2451 | rep.private_data = conn_param->private_data; | |
2452 | rep.private_data_len = conn_param->private_data_len; | |
2453 | rep.responder_resources = conn_param->responder_resources; | |
2454 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
2455 | rep.failover_accepted = 0; |
2456 | rep.flow_control = conn_param->flow_control; | |
2457 | rep.rnr_retry_count = conn_param->rnr_retry_count; | |
2458 | rep.srq = id_priv->srq ? 1 : 0; | |
2459 | ||
0fe313b0 SH |
2460 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
2461 | out: | |
2462 | return ret; | |
e51060f0 SH |
2463 | } |
2464 | ||
07ebafba TT |
2465 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
2466 | struct rdma_conn_param *conn_param) | |
2467 | { | |
2468 | struct iw_cm_conn_param iw_param; | |
2469 | int ret; | |
2470 | ||
5851bb89 | 2471 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
2472 | if (ret) |
2473 | return ret; | |
2474 | ||
2475 | iw_param.ord = conn_param->initiator_depth; | |
2476 | iw_param.ird = conn_param->responder_resources; | |
2477 | iw_param.private_data = conn_param->private_data; | |
2478 | iw_param.private_data_len = conn_param->private_data_len; | |
2479 | if (id_priv->id.qp) { | |
2480 | iw_param.qpn = id_priv->qp_num; | |
2481 | } else | |
2482 | iw_param.qpn = conn_param->qp_num; | |
2483 | ||
2484 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
2485 | } | |
2486 | ||
628e5f6d SH |
2487 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
2488 | enum ib_cm_sidr_status status, | |
2489 | const void *private_data, int private_data_len) | |
2490 | { | |
2491 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 2492 | int ret; |
628e5f6d SH |
2493 | |
2494 | memset(&rep, 0, sizeof rep); | |
2495 | rep.status = status; | |
2496 | if (status == IB_SIDR_SUCCESS) { | |
d2ca39f2 YE |
2497 | ret = cma_set_qkey(id_priv); |
2498 | if (ret) | |
2499 | return ret; | |
628e5f6d | 2500 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 2501 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
2502 | } |
2503 | rep.private_data = private_data; | |
2504 | rep.private_data_len = private_data_len; | |
2505 | ||
2506 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
2507 | } | |
2508 | ||
e51060f0 SH |
2509 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2510 | { | |
2511 | struct rdma_id_private *id_priv; | |
2512 | int ret; | |
2513 | ||
2514 | id_priv = container_of(id, struct rdma_id_private, id); | |
2515 | if (!cma_comp(id_priv, CMA_CONNECT)) | |
2516 | return -EINVAL; | |
2517 | ||
2518 | if (!id->qp && conn_param) { | |
2519 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2520 | id_priv->srq = conn_param->srq; |
2521 | } | |
2522 | ||
07ebafba TT |
2523 | switch (rdma_node_get_transport(id->device->node_type)) { |
2524 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2525 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2526 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, |
2527 | conn_param->private_data, | |
2528 | conn_param->private_data_len); | |
2529 | else if (conn_param) | |
e51060f0 SH |
2530 | ret = cma_accept_ib(id_priv, conn_param); |
2531 | else | |
2532 | ret = cma_rep_recv(id_priv); | |
2533 | break; | |
07ebafba TT |
2534 | case RDMA_TRANSPORT_IWARP: |
2535 | ret = cma_accept_iw(id_priv, conn_param); | |
2536 | break; | |
e51060f0 SH |
2537 | default: |
2538 | ret = -ENOSYS; | |
2539 | break; | |
2540 | } | |
2541 | ||
2542 | if (ret) | |
2543 | goto reject; | |
2544 | ||
2545 | return 0; | |
2546 | reject: | |
c5483388 | 2547 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
2548 | rdma_reject(id, NULL, 0); |
2549 | return ret; | |
2550 | } | |
2551 | EXPORT_SYMBOL(rdma_accept); | |
2552 | ||
0fe313b0 SH |
2553 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
2554 | { | |
2555 | struct rdma_id_private *id_priv; | |
2556 | int ret; | |
2557 | ||
2558 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2559 | if (!cma_has_cm_dev(id_priv)) |
0fe313b0 SH |
2560 | return -EINVAL; |
2561 | ||
2562 | switch (id->device->node_type) { | |
2563 | case RDMA_NODE_IB_CA: | |
2564 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
2565 | break; | |
2566 | default: | |
2567 | ret = 0; | |
2568 | break; | |
2569 | } | |
2570 | return ret; | |
2571 | } | |
2572 | EXPORT_SYMBOL(rdma_notify); | |
2573 | ||
e51060f0 SH |
2574 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
2575 | u8 private_data_len) | |
2576 | { | |
2577 | struct rdma_id_private *id_priv; | |
2578 | int ret; | |
2579 | ||
2580 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2581 | if (!cma_has_cm_dev(id_priv)) |
e51060f0 SH |
2582 | return -EINVAL; |
2583 | ||
07ebafba TT |
2584 | switch (rdma_node_get_transport(id->device->node_type)) { |
2585 | case RDMA_TRANSPORT_IB: | |
c8f6a362 | 2586 | if (cma_is_ud_ps(id->ps)) |
628e5f6d SH |
2587 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, |
2588 | private_data, private_data_len); | |
2589 | else | |
2590 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
2591 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
2592 | 0, private_data, private_data_len); | |
e51060f0 | 2593 | break; |
07ebafba TT |
2594 | case RDMA_TRANSPORT_IWARP: |
2595 | ret = iw_cm_reject(id_priv->cm_id.iw, | |
2596 | private_data, private_data_len); | |
2597 | break; | |
e51060f0 SH |
2598 | default: |
2599 | ret = -ENOSYS; | |
2600 | break; | |
2601 | } | |
2602 | return ret; | |
2603 | } | |
2604 | EXPORT_SYMBOL(rdma_reject); | |
2605 | ||
2606 | int rdma_disconnect(struct rdma_cm_id *id) | |
2607 | { | |
2608 | struct rdma_id_private *id_priv; | |
2609 | int ret; | |
2610 | ||
2611 | id_priv = container_of(id, struct rdma_id_private, id); | |
6c719f5c | 2612 | if (!cma_has_cm_dev(id_priv)) |
e51060f0 SH |
2613 | return -EINVAL; |
2614 | ||
07ebafba TT |
2615 | switch (rdma_node_get_transport(id->device->node_type)) { |
2616 | case RDMA_TRANSPORT_IB: | |
c5483388 | 2617 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
2618 | if (ret) |
2619 | goto out; | |
e51060f0 SH |
2620 | /* Initiate or respond to a disconnect. */ |
2621 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
2622 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
2623 | break; | |
07ebafba TT |
2624 | case RDMA_TRANSPORT_IWARP: |
2625 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); | |
2626 | break; | |
e51060f0 | 2627 | default: |
07ebafba | 2628 | ret = -EINVAL; |
e51060f0 SH |
2629 | break; |
2630 | } | |
2631 | out: | |
2632 | return ret; | |
2633 | } | |
2634 | EXPORT_SYMBOL(rdma_disconnect); | |
2635 | ||
c8f6a362 SH |
2636 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
2637 | { | |
2638 | struct rdma_id_private *id_priv; | |
2639 | struct cma_multicast *mc = multicast->context; | |
2640 | struct rdma_cm_event event; | |
2641 | int ret; | |
2642 | ||
2643 | id_priv = mc->id_priv; | |
de910bd9 OG |
2644 | if (cma_disable_callback(id_priv, CMA_ADDR_BOUND) && |
2645 | cma_disable_callback(id_priv, CMA_ADDR_RESOLVED)) | |
8aa08602 | 2646 | return 0; |
c8f6a362 | 2647 | |
c5483388 | 2648 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
2649 | if (!status && id_priv->id.qp) |
2650 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
2651 | multicast->rec.mlid); | |
c5483388 | 2652 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
2653 | |
2654 | memset(&event, 0, sizeof event); | |
2655 | event.status = status; | |
2656 | event.param.ud.private_data = mc->context; | |
2657 | if (!status) { | |
2658 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
2659 | ib_init_ah_from_mcmember(id_priv->id.device, | |
2660 | id_priv->id.port_num, &multicast->rec, | |
2661 | &event.param.ud.ah_attr); | |
2662 | event.param.ud.qp_num = 0xFFFFFF; | |
2663 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
2664 | } else | |
2665 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
2666 | ||
2667 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2668 | if (ret) { | |
2669 | cma_exch(id_priv, CMA_DESTROYING); | |
de910bd9 | 2670 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2671 | rdma_destroy_id(&id_priv->id); |
2672 | return 0; | |
2673 | } | |
8aa08602 | 2674 | |
de910bd9 | 2675 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2676 | return 0; |
2677 | } | |
2678 | ||
2679 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
2680 | struct sockaddr *addr, union ib_gid *mgid) | |
2681 | { | |
2682 | unsigned char mc_map[MAX_ADDR_LEN]; | |
2683 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2684 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
2685 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
2686 | ||
2687 | if (cma_any_addr(addr)) { | |
2688 | memset(mgid, 0, sizeof *mgid); | |
2689 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 2690 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
2691 | 0xFF10A01B)) { |
2692 | /* IPv6 address is an SA assigned MGID. */ | |
2693 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
e2e62697 JG |
2694 | } else if ((addr->sa_family == AF_INET6)) { |
2695 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
2696 | if (id_priv->id.ps == RDMA_PS_UDP) | |
2697 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
2698 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 2699 | } else { |
a9e527e3 | 2700 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
2701 | if (id_priv->id.ps == RDMA_PS_UDP) |
2702 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
2703 | *mgid = *(union ib_gid *) (mc_map + 4); |
2704 | } | |
2705 | } | |
2706 | ||
2707 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
2708 | struct cma_multicast *mc) | |
2709 | { | |
2710 | struct ib_sa_mcmember_rec rec; | |
2711 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2712 | ib_sa_comp_mask comp_mask; | |
2713 | int ret; | |
2714 | ||
2715 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
2716 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
2717 | &rec.mgid, &rec); | |
2718 | if (ret) | |
2719 | return ret; | |
2720 | ||
3f446754 | 2721 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
c8f6a362 SH |
2722 | if (id_priv->id.ps == RDMA_PS_UDP) |
2723 | rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
2724 | ib_addr_get_sgid(dev_addr, &rec.port_gid); | |
2725 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
2726 | rec.join_state = 1; | |
2727 | ||
2728 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
2729 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
2730 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
2731 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
2732 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
2733 | ||
84adeee9 YE |
2734 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
2735 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2736 | IB_SA_MCMEMBER_REC_RATE_SELECTOR; | |
2737 | ||
c8f6a362 SH |
2738 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
2739 | id_priv->id.port_num, &rec, | |
2740 | comp_mask, GFP_KERNEL, | |
2741 | cma_ib_mc_handler, mc); | |
2742 | if (IS_ERR(mc->multicast.ib)) | |
2743 | return PTR_ERR(mc->multicast.ib); | |
2744 | ||
2745 | return 0; | |
2746 | } | |
2747 | ||
2748 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, | |
2749 | void *context) | |
2750 | { | |
2751 | struct rdma_id_private *id_priv; | |
2752 | struct cma_multicast *mc; | |
2753 | int ret; | |
2754 | ||
2755 | id_priv = container_of(id, struct rdma_id_private, id); | |
2756 | if (!cma_comp(id_priv, CMA_ADDR_BOUND) && | |
2757 | !cma_comp(id_priv, CMA_ADDR_RESOLVED)) | |
2758 | return -EINVAL; | |
2759 | ||
2760 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
2761 | if (!mc) | |
2762 | return -ENOMEM; | |
2763 | ||
2764 | memcpy(&mc->addr, addr, ip_addr_size(addr)); | |
2765 | mc->context = context; | |
2766 | mc->id_priv = id_priv; | |
2767 | ||
2768 | spin_lock(&id_priv->lock); | |
2769 | list_add(&mc->list, &id_priv->mc_list); | |
2770 | spin_unlock(&id_priv->lock); | |
2771 | ||
2772 | switch (rdma_node_get_transport(id->device->node_type)) { | |
2773 | case RDMA_TRANSPORT_IB: | |
2774 | ret = cma_join_ib_multicast(id_priv, mc); | |
2775 | break; | |
2776 | default: | |
2777 | ret = -ENOSYS; | |
2778 | break; | |
2779 | } | |
2780 | ||
2781 | if (ret) { | |
2782 | spin_lock_irq(&id_priv->lock); | |
2783 | list_del(&mc->list); | |
2784 | spin_unlock_irq(&id_priv->lock); | |
2785 | kfree(mc); | |
2786 | } | |
2787 | return ret; | |
2788 | } | |
2789 | EXPORT_SYMBOL(rdma_join_multicast); | |
2790 | ||
2791 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
2792 | { | |
2793 | struct rdma_id_private *id_priv; | |
2794 | struct cma_multicast *mc; | |
2795 | ||
2796 | id_priv = container_of(id, struct rdma_id_private, id); | |
2797 | spin_lock_irq(&id_priv->lock); | |
2798 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
2799 | if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) { | |
2800 | list_del(&mc->list); | |
2801 | spin_unlock_irq(&id_priv->lock); | |
2802 | ||
2803 | if (id->qp) | |
2804 | ib_detach_mcast(id->qp, | |
2805 | &mc->multicast.ib->rec.mgid, | |
2806 | mc->multicast.ib->rec.mlid); | |
2807 | ib_sa_free_multicast(mc->multicast.ib); | |
2808 | kfree(mc); | |
2809 | return; | |
2810 | } | |
2811 | } | |
2812 | spin_unlock_irq(&id_priv->lock); | |
2813 | } | |
2814 | EXPORT_SYMBOL(rdma_leave_multicast); | |
2815 | ||
dd5bdff8 OG |
2816 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
2817 | { | |
2818 | struct rdma_dev_addr *dev_addr; | |
2819 | struct cma_ndev_work *work; | |
2820 | ||
2821 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
2822 | ||
6266ed6e | 2823 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
dd5bdff8 OG |
2824 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
2825 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
2826 | ndev->name, &id_priv->id); | |
2827 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2828 | if (!work) | |
2829 | return -ENOMEM; | |
2830 | ||
2831 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
2832 | work->id = id_priv; | |
2833 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
2834 | atomic_inc(&id_priv->refcount); | |
2835 | queue_work(cma_wq, &work->work); | |
2836 | } | |
2837 | ||
2838 | return 0; | |
2839 | } | |
2840 | ||
2841 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
2842 | void *ctx) | |
2843 | { | |
2844 | struct net_device *ndev = (struct net_device *)ctx; | |
2845 | struct cma_device *cma_dev; | |
2846 | struct rdma_id_private *id_priv; | |
2847 | int ret = NOTIFY_DONE; | |
2848 | ||
2849 | if (dev_net(ndev) != &init_net) | |
2850 | return NOTIFY_DONE; | |
2851 | ||
2852 | if (event != NETDEV_BONDING_FAILOVER) | |
2853 | return NOTIFY_DONE; | |
2854 | ||
2855 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
2856 | return NOTIFY_DONE; | |
2857 | ||
2858 | mutex_lock(&lock); | |
2859 | list_for_each_entry(cma_dev, &dev_list, list) | |
2860 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
2861 | ret = cma_netdev_change(ndev, id_priv); | |
2862 | if (ret) | |
2863 | goto out; | |
2864 | } | |
2865 | ||
2866 | out: | |
2867 | mutex_unlock(&lock); | |
2868 | return ret; | |
2869 | } | |
2870 | ||
2871 | static struct notifier_block cma_nb = { | |
2872 | .notifier_call = cma_netdev_callback | |
2873 | }; | |
2874 | ||
e51060f0 SH |
2875 | static void cma_add_one(struct ib_device *device) |
2876 | { | |
2877 | struct cma_device *cma_dev; | |
2878 | struct rdma_id_private *id_priv; | |
2879 | ||
2880 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
2881 | if (!cma_dev) | |
2882 | return; | |
2883 | ||
2884 | cma_dev->device = device; | |
e51060f0 SH |
2885 | |
2886 | init_completion(&cma_dev->comp); | |
2887 | atomic_set(&cma_dev->refcount, 1); | |
2888 | INIT_LIST_HEAD(&cma_dev->id_list); | |
2889 | ib_set_client_data(device, &cma_client, cma_dev); | |
2890 | ||
2891 | mutex_lock(&lock); | |
2892 | list_add_tail(&cma_dev->list, &dev_list); | |
2893 | list_for_each_entry(id_priv, &listen_any_list, list) | |
2894 | cma_listen_on_dev(id_priv, cma_dev); | |
2895 | mutex_unlock(&lock); | |
e51060f0 SH |
2896 | } |
2897 | ||
2898 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
2899 | { | |
a1b1b61f | 2900 | struct rdma_cm_event event; |
e51060f0 | 2901 | enum cma_state state; |
de910bd9 | 2902 | int ret = 0; |
e51060f0 SH |
2903 | |
2904 | /* Record that we want to remove the device */ | |
2905 | state = cma_exch(id_priv, CMA_DEVICE_REMOVAL); | |
2906 | if (state == CMA_DESTROYING) | |
2907 | return 0; | |
2908 | ||
2909 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 2910 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2911 | |
2912 | /* Check for destruction from another callback. */ | |
2913 | if (!cma_comp(id_priv, CMA_DEVICE_REMOVAL)) | |
de910bd9 | 2914 | goto out; |
e51060f0 | 2915 | |
a1b1b61f SH |
2916 | memset(&event, 0, sizeof event); |
2917 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
2918 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
2919 | out: | |
2920 | mutex_unlock(&id_priv->handler_mutex); | |
2921 | return ret; | |
e51060f0 SH |
2922 | } |
2923 | ||
2924 | static void cma_process_remove(struct cma_device *cma_dev) | |
2925 | { | |
e51060f0 SH |
2926 | struct rdma_id_private *id_priv; |
2927 | int ret; | |
2928 | ||
e51060f0 SH |
2929 | mutex_lock(&lock); |
2930 | while (!list_empty(&cma_dev->id_list)) { | |
2931 | id_priv = list_entry(cma_dev->id_list.next, | |
2932 | struct rdma_id_private, list); | |
2933 | ||
d02d1f53 | 2934 | list_del(&id_priv->listen_list); |
94de178a | 2935 | list_del_init(&id_priv->list); |
e51060f0 SH |
2936 | atomic_inc(&id_priv->refcount); |
2937 | mutex_unlock(&lock); | |
2938 | ||
d02d1f53 | 2939 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
2940 | cma_deref_id(id_priv); |
2941 | if (ret) | |
2942 | rdma_destroy_id(&id_priv->id); | |
2943 | ||
2944 | mutex_lock(&lock); | |
2945 | } | |
2946 | mutex_unlock(&lock); | |
2947 | ||
2948 | cma_deref_dev(cma_dev); | |
2949 | wait_for_completion(&cma_dev->comp); | |
2950 | } | |
2951 | ||
2952 | static void cma_remove_one(struct ib_device *device) | |
2953 | { | |
2954 | struct cma_device *cma_dev; | |
2955 | ||
2956 | cma_dev = ib_get_client_data(device, &cma_client); | |
2957 | if (!cma_dev) | |
2958 | return; | |
2959 | ||
2960 | mutex_lock(&lock); | |
2961 | list_del(&cma_dev->list); | |
2962 | mutex_unlock(&lock); | |
2963 | ||
2964 | cma_process_remove(cma_dev); | |
2965 | kfree(cma_dev); | |
2966 | } | |
2967 | ||
716abb1f | 2968 | static int __init cma_init(void) |
e51060f0 | 2969 | { |
a25de534 | 2970 | int ret, low, high, remaining; |
e51060f0 | 2971 | |
aedec080 | 2972 | get_random_bytes(&next_port, sizeof next_port); |
227b60f5 | 2973 | inet_get_local_port_range(&low, &high); |
a25de534 AA |
2974 | remaining = (high - low) + 1; |
2975 | next_port = ((unsigned int) next_port % remaining) + low; | |
227b60f5 | 2976 | |
c7f743a6 | 2977 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
2978 | if (!cma_wq) |
2979 | return -ENOMEM; | |
2980 | ||
c1a0b23b | 2981 | ib_sa_register_client(&sa_client); |
7a118df3 | 2982 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 2983 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 2984 | |
e51060f0 SH |
2985 | ret = ib_register_client(&cma_client); |
2986 | if (ret) | |
2987 | goto err; | |
2988 | return 0; | |
2989 | ||
2990 | err: | |
dd5bdff8 | 2991 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 2992 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 2993 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
2994 | destroy_workqueue(cma_wq); |
2995 | return ret; | |
2996 | } | |
2997 | ||
716abb1f | 2998 | static void __exit cma_cleanup(void) |
e51060f0 SH |
2999 | { |
3000 | ib_unregister_client(&cma_client); | |
dd5bdff8 | 3001 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3002 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3003 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3004 | destroy_workqueue(cma_wq); |
3005 | idr_destroy(&sdp_ps); | |
3006 | idr_destroy(&tcp_ps); | |
628e5f6d | 3007 | idr_destroy(&udp_ps); |
c8f6a362 | 3008 | idr_destroy(&ipoib_ps); |
e51060f0 SH |
3009 | } |
3010 | ||
3011 | module_init(cma_init); | |
3012 | module_exit(cma_cleanup); |