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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> |
5a0e3ad6 | 43 | #include <linux/slab.h> |
e4dd23d7 | 44 | #include <linux/module.h> |
e51060f0 SH |
45 | |
46 | #include <net/tcp.h> | |
1f5175ad | 47 | #include <net/ipv6.h> |
e51060f0 SH |
48 | |
49 | #include <rdma/rdma_cm.h> | |
50 | #include <rdma/rdma_cm_ib.h> | |
753f618a | 51 | #include <rdma/rdma_netlink.h> |
e51060f0 SH |
52 | #include <rdma/ib_cache.h> |
53 | #include <rdma/ib_cm.h> | |
54 | #include <rdma/ib_sa.h> | |
07ebafba | 55 | #include <rdma/iw_cm.h> |
e51060f0 SH |
56 | |
57 | MODULE_AUTHOR("Sean Hefty"); | |
58 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
59 | MODULE_LICENSE("Dual BSD/GPL"); | |
60 | ||
61 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
d5bb7599 | 62 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 63 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 64 | #define CMA_IBOE_PACKET_LIFETIME 18 |
e51060f0 SH |
65 | |
66 | static void cma_add_one(struct ib_device *device); | |
67 | static void cma_remove_one(struct ib_device *device); | |
68 | ||
69 | static struct ib_client cma_client = { | |
70 | .name = "cma", | |
71 | .add = cma_add_one, | |
72 | .remove = cma_remove_one | |
73 | }; | |
74 | ||
c1a0b23b | 75 | static struct ib_sa_client sa_client; |
7a118df3 | 76 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
77 | static LIST_HEAD(dev_list); |
78 | static LIST_HEAD(listen_any_list); | |
79 | static DEFINE_MUTEX(lock); | |
80 | static struct workqueue_struct *cma_wq; | |
81 | static DEFINE_IDR(sdp_ps); | |
82 | static DEFINE_IDR(tcp_ps); | |
628e5f6d | 83 | static DEFINE_IDR(udp_ps); |
c8f6a362 | 84 | static DEFINE_IDR(ipoib_ps); |
2d2e9415 | 85 | static DEFINE_IDR(ib_ps); |
e51060f0 SH |
86 | |
87 | struct cma_device { | |
88 | struct list_head list; | |
89 | struct ib_device *device; | |
e51060f0 SH |
90 | struct completion comp; |
91 | atomic_t refcount; | |
92 | struct list_head id_list; | |
93 | }; | |
94 | ||
e51060f0 SH |
95 | struct rdma_bind_list { |
96 | struct idr *ps; | |
97 | struct hlist_head owners; | |
98 | unsigned short port; | |
99 | }; | |
100 | ||
101 | /* | |
102 | * Device removal can occur at anytime, so we need extra handling to | |
103 | * serialize notifying the user of device removal with other callbacks. | |
104 | * We do this by disabling removal notification while a callback is in process, | |
105 | * and reporting it after the callback completes. | |
106 | */ | |
107 | struct rdma_id_private { | |
108 | struct rdma_cm_id id; | |
109 | ||
110 | struct rdma_bind_list *bind_list; | |
111 | struct hlist_node node; | |
d02d1f53 SH |
112 | struct list_head list; /* listen_any_list or cma_device.list */ |
113 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 114 | struct cma_device *cma_dev; |
c8f6a362 | 115 | struct list_head mc_list; |
e51060f0 | 116 | |
d02d1f53 | 117 | int internal_id; |
550e5ca7 | 118 | enum rdma_cm_state state; |
e51060f0 | 119 | spinlock_t lock; |
c5483388 SH |
120 | struct mutex qp_mutex; |
121 | ||
e51060f0 SH |
122 | struct completion comp; |
123 | atomic_t refcount; | |
de910bd9 | 124 | struct mutex handler_mutex; |
e51060f0 SH |
125 | |
126 | int backlog; | |
127 | int timeout_ms; | |
128 | struct ib_sa_query *query; | |
129 | int query_id; | |
130 | union { | |
131 | struct ib_cm_id *ib; | |
07ebafba | 132 | struct iw_cm_id *iw; |
e51060f0 SH |
133 | } cm_id; |
134 | ||
135 | u32 seq_num; | |
c8f6a362 | 136 | u32 qkey; |
e51060f0 | 137 | u32 qp_num; |
83e9502d | 138 | pid_t owner; |
e51060f0 | 139 | u8 srq; |
a81c994d | 140 | u8 tos; |
a9bb7912 | 141 | u8 reuseaddr; |
e51060f0 SH |
142 | }; |
143 | ||
c8f6a362 SH |
144 | struct cma_multicast { |
145 | struct rdma_id_private *id_priv; | |
146 | union { | |
147 | struct ib_sa_multicast *ib; | |
148 | } multicast; | |
149 | struct list_head list; | |
150 | void *context; | |
3f446754 | 151 | struct sockaddr_storage addr; |
3c86aa70 | 152 | struct kref mcref; |
c8f6a362 SH |
153 | }; |
154 | ||
e51060f0 SH |
155 | struct cma_work { |
156 | struct work_struct work; | |
157 | struct rdma_id_private *id; | |
550e5ca7 NM |
158 | enum rdma_cm_state old_state; |
159 | enum rdma_cm_state new_state; | |
e51060f0 SH |
160 | struct rdma_cm_event event; |
161 | }; | |
162 | ||
dd5bdff8 OG |
163 | struct cma_ndev_work { |
164 | struct work_struct work; | |
165 | struct rdma_id_private *id; | |
166 | struct rdma_cm_event event; | |
167 | }; | |
168 | ||
3c86aa70 EC |
169 | struct iboe_mcast_work { |
170 | struct work_struct work; | |
171 | struct rdma_id_private *id; | |
172 | struct cma_multicast *mc; | |
173 | }; | |
174 | ||
e51060f0 SH |
175 | union cma_ip_addr { |
176 | struct in6_addr ip6; | |
177 | struct { | |
1b90c137 AV |
178 | __be32 pad[3]; |
179 | __be32 addr; | |
e51060f0 SH |
180 | } ip4; |
181 | }; | |
182 | ||
183 | struct cma_hdr { | |
184 | u8 cma_version; | |
185 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 186 | __be16 port; |
e51060f0 SH |
187 | union cma_ip_addr src_addr; |
188 | union cma_ip_addr dst_addr; | |
189 | }; | |
190 | ||
191 | struct sdp_hh { | |
192 | u8 bsdh[16]; | |
193 | u8 sdp_version; /* Major version: 7:4 */ | |
194 | u8 ip_version; /* IP version: 7:4 */ | |
195 | u8 sdp_specific1[10]; | |
1b90c137 AV |
196 | __be16 port; |
197 | __be16 sdp_specific2; | |
e51060f0 SH |
198 | union cma_ip_addr src_addr; |
199 | union cma_ip_addr dst_addr; | |
200 | }; | |
201 | ||
202 | struct sdp_hah { | |
203 | u8 bsdh[16]; | |
204 | u8 sdp_version; | |
205 | }; | |
206 | ||
207 | #define CMA_VERSION 0x00 | |
208 | #define SDP_MAJ_VERSION 0x2 | |
209 | ||
550e5ca7 | 210 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
211 | { |
212 | unsigned long flags; | |
213 | int ret; | |
214 | ||
215 | spin_lock_irqsave(&id_priv->lock, flags); | |
216 | ret = (id_priv->state == comp); | |
217 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
218 | return ret; | |
219 | } | |
220 | ||
221 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 222 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
223 | { |
224 | unsigned long flags; | |
225 | int ret; | |
226 | ||
227 | spin_lock_irqsave(&id_priv->lock, flags); | |
228 | if ((ret = (id_priv->state == comp))) | |
229 | id_priv->state = exch; | |
230 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
231 | return ret; | |
232 | } | |
233 | ||
550e5ca7 NM |
234 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
235 | enum rdma_cm_state exch) | |
e51060f0 SH |
236 | { |
237 | unsigned long flags; | |
550e5ca7 | 238 | enum rdma_cm_state old; |
e51060f0 SH |
239 | |
240 | spin_lock_irqsave(&id_priv->lock, flags); | |
241 | old = id_priv->state; | |
242 | id_priv->state = exch; | |
243 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
244 | return old; | |
245 | } | |
246 | ||
247 | static inline u8 cma_get_ip_ver(struct cma_hdr *hdr) | |
248 | { | |
249 | return hdr->ip_version >> 4; | |
250 | } | |
251 | ||
252 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
253 | { | |
254 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
255 | } | |
256 | ||
257 | static inline u8 sdp_get_majv(u8 sdp_version) | |
258 | { | |
259 | return sdp_version >> 4; | |
260 | } | |
261 | ||
262 | static inline u8 sdp_get_ip_ver(struct sdp_hh *hh) | |
263 | { | |
264 | return hh->ip_version >> 4; | |
265 | } | |
266 | ||
267 | static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) | |
268 | { | |
269 | hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF); | |
270 | } | |
271 | ||
272 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, | |
273 | struct cma_device *cma_dev) | |
274 | { | |
275 | atomic_inc(&cma_dev->refcount); | |
276 | id_priv->cma_dev = cma_dev; | |
277 | id_priv->id.device = cma_dev->device; | |
3c86aa70 EC |
278 | id_priv->id.route.addr.dev_addr.transport = |
279 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 SH |
280 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
281 | } | |
282 | ||
283 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
284 | { | |
285 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
286 | complete(&cma_dev->comp); | |
287 | } | |
288 | ||
3c86aa70 EC |
289 | static inline void release_mc(struct kref *kref) |
290 | { | |
291 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
292 | ||
293 | kfree(mc->multicast.ib); | |
294 | kfree(mc); | |
295 | } | |
296 | ||
a396d43a | 297 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 298 | { |
a396d43a | 299 | mutex_lock(&lock); |
e51060f0 SH |
300 | list_del(&id_priv->list); |
301 | cma_deref_dev(id_priv->cma_dev); | |
302 | id_priv->cma_dev = NULL; | |
a396d43a | 303 | mutex_unlock(&lock); |
e51060f0 SH |
304 | } |
305 | ||
d2ca39f2 | 306 | static int cma_set_qkey(struct rdma_id_private *id_priv) |
c8f6a362 SH |
307 | { |
308 | struct ib_sa_mcmember_rec rec; | |
309 | int ret = 0; | |
310 | ||
d2ca39f2 YE |
311 | if (id_priv->qkey) |
312 | return 0; | |
313 | ||
314 | switch (id_priv->id.ps) { | |
c8f6a362 | 315 | case RDMA_PS_UDP: |
d2ca39f2 | 316 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
317 | break; |
318 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
319 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
320 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
321 | id_priv->id.port_num, &rec.mgid, | |
322 | &rec); | |
323 | if (!ret) | |
324 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
325 | break; |
326 | default: | |
327 | break; | |
328 | } | |
329 | return ret; | |
330 | } | |
331 | ||
3c86aa70 EC |
332 | static int find_gid_port(struct ib_device *device, union ib_gid *gid, u8 port_num) |
333 | { | |
334 | int i; | |
335 | int err; | |
336 | struct ib_port_attr props; | |
337 | union ib_gid tmp; | |
338 | ||
339 | err = ib_query_port(device, port_num, &props); | |
340 | if (err) | |
341 | return 1; | |
342 | ||
343 | for (i = 0; i < props.gid_tbl_len; ++i) { | |
344 | err = ib_query_gid(device, port_num, i, &tmp); | |
345 | if (err) | |
346 | return 1; | |
347 | if (!memcmp(&tmp, gid, sizeof tmp)) | |
348 | return 0; | |
349 | } | |
350 | ||
351 | return -EAGAIN; | |
352 | } | |
353 | ||
07ebafba | 354 | static int cma_acquire_dev(struct rdma_id_private *id_priv) |
e51060f0 | 355 | { |
c8f6a362 | 356 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 357 | struct cma_device *cma_dev; |
3c86aa70 | 358 | union ib_gid gid, iboe_gid; |
e51060f0 | 359 | int ret = -ENODEV; |
3c86aa70 EC |
360 | u8 port; |
361 | enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ? | |
362 | IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; | |
e51060f0 | 363 | |
2efdd6a0 MS |
364 | if (dev_ll != IB_LINK_LAYER_INFINIBAND && |
365 | id_priv->id.ps == RDMA_PS_IPOIB) | |
366 | return -EINVAL; | |
367 | ||
a396d43a | 368 | mutex_lock(&lock); |
3c86aa70 EC |
369 | iboe_addr_get_sgid(dev_addr, &iboe_gid); |
370 | memcpy(&gid, dev_addr->src_dev_addr + | |
371 | rdma_addr_gid_offset(dev_addr), sizeof gid); | |
e51060f0 | 372 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 EC |
373 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
374 | if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) { | |
375 | if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB && | |
376 | rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET) | |
377 | ret = find_gid_port(cma_dev->device, &iboe_gid, port); | |
378 | else | |
379 | ret = find_gid_port(cma_dev->device, &gid, port); | |
380 | ||
381 | if (!ret) { | |
382 | id_priv->id.port_num = port; | |
383 | goto out; | |
384 | } else if (ret == 1) | |
385 | break; | |
386 | } | |
e51060f0 SH |
387 | } |
388 | } | |
3c86aa70 EC |
389 | |
390 | out: | |
391 | if (!ret) | |
392 | cma_attach_to_dev(id_priv, cma_dev); | |
393 | ||
a396d43a | 394 | mutex_unlock(&lock); |
e51060f0 SH |
395 | return ret; |
396 | } | |
397 | ||
e51060f0 SH |
398 | static void cma_deref_id(struct rdma_id_private *id_priv) |
399 | { | |
400 | if (atomic_dec_and_test(&id_priv->refcount)) | |
401 | complete(&id_priv->comp); | |
402 | } | |
403 | ||
de910bd9 | 404 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
550e5ca7 | 405 | enum rdma_cm_state state) |
8aa08602 | 406 | { |
de910bd9 OG |
407 | mutex_lock(&id_priv->handler_mutex); |
408 | if (id_priv->state != state) { | |
409 | mutex_unlock(&id_priv->handler_mutex); | |
410 | return -EINVAL; | |
411 | } | |
412 | return 0; | |
e51060f0 SH |
413 | } |
414 | ||
415 | struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, | |
b26f9b99 SH |
416 | void *context, enum rdma_port_space ps, |
417 | enum ib_qp_type qp_type) | |
e51060f0 SH |
418 | { |
419 | struct rdma_id_private *id_priv; | |
420 | ||
421 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
422 | if (!id_priv) | |
423 | return ERR_PTR(-ENOMEM); | |
424 | ||
83e9502d | 425 | id_priv->owner = task_pid_nr(current); |
550e5ca7 | 426 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
427 | id_priv->id.context = context; |
428 | id_priv->id.event_handler = event_handler; | |
429 | id_priv->id.ps = ps; | |
b26f9b99 | 430 | id_priv->id.qp_type = qp_type; |
e51060f0 | 431 | spin_lock_init(&id_priv->lock); |
c5483388 | 432 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
433 | init_completion(&id_priv->comp); |
434 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 435 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 436 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 437 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 SH |
438 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
439 | ||
440 | return &id_priv->id; | |
441 | } | |
442 | EXPORT_SYMBOL(rdma_create_id); | |
443 | ||
c8f6a362 | 444 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
445 | { |
446 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 447 | int qp_attr_mask, ret; |
e51060f0 | 448 | |
c8f6a362 SH |
449 | qp_attr.qp_state = IB_QPS_INIT; |
450 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
451 | if (ret) |
452 | return ret; | |
453 | ||
c8f6a362 SH |
454 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
455 | if (ret) | |
456 | return ret; | |
457 | ||
458 | qp_attr.qp_state = IB_QPS_RTR; | |
459 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
460 | if (ret) | |
461 | return ret; | |
462 | ||
463 | qp_attr.qp_state = IB_QPS_RTS; | |
464 | qp_attr.sq_psn = 0; | |
465 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
466 | ||
467 | return ret; | |
e51060f0 SH |
468 | } |
469 | ||
c8f6a362 | 470 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
471 | { |
472 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 473 | int qp_attr_mask, ret; |
07ebafba TT |
474 | |
475 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
476 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
477 | if (ret) | |
478 | return ret; | |
07ebafba | 479 | |
c8f6a362 | 480 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
481 | } |
482 | ||
e51060f0 SH |
483 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
484 | struct ib_qp_init_attr *qp_init_attr) | |
485 | { | |
486 | struct rdma_id_private *id_priv; | |
487 | struct ib_qp *qp; | |
488 | int ret; | |
489 | ||
490 | id_priv = container_of(id, struct rdma_id_private, id); | |
491 | if (id->device != pd->device) | |
492 | return -EINVAL; | |
493 | ||
494 | qp = ib_create_qp(pd, qp_init_attr); | |
495 | if (IS_ERR(qp)) | |
496 | return PTR_ERR(qp); | |
497 | ||
b26f9b99 | 498 | if (id->qp_type == IB_QPT_UD) |
c8f6a362 SH |
499 | ret = cma_init_ud_qp(id_priv, qp); |
500 | else | |
501 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
502 | if (ret) |
503 | goto err; | |
504 | ||
505 | id->qp = qp; | |
506 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
507 | id_priv->srq = (qp->srq != NULL); |
508 | return 0; | |
509 | err: | |
510 | ib_destroy_qp(qp); | |
511 | return ret; | |
512 | } | |
513 | EXPORT_SYMBOL(rdma_create_qp); | |
514 | ||
515 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
516 | { | |
c5483388 SH |
517 | struct rdma_id_private *id_priv; |
518 | ||
519 | id_priv = container_of(id, struct rdma_id_private, id); | |
520 | mutex_lock(&id_priv->qp_mutex); | |
521 | ib_destroy_qp(id_priv->id.qp); | |
522 | id_priv->id.qp = NULL; | |
523 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
524 | } |
525 | EXPORT_SYMBOL(rdma_destroy_qp); | |
526 | ||
5851bb89 SH |
527 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
528 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
529 | { |
530 | struct ib_qp_attr qp_attr; | |
531 | int qp_attr_mask, ret; | |
532 | ||
c5483388 SH |
533 | mutex_lock(&id_priv->qp_mutex); |
534 | if (!id_priv->id.qp) { | |
535 | ret = 0; | |
536 | goto out; | |
537 | } | |
e51060f0 SH |
538 | |
539 | /* Need to update QP attributes from default values. */ | |
540 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 541 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 542 | if (ret) |
c5483388 | 543 | goto out; |
e51060f0 | 544 | |
c5483388 | 545 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 546 | if (ret) |
c5483388 | 547 | goto out; |
e51060f0 SH |
548 | |
549 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 550 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 551 | if (ret) |
c5483388 | 552 | goto out; |
e51060f0 | 553 | |
5851bb89 SH |
554 | if (conn_param) |
555 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
556 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
557 | out: | |
558 | mutex_unlock(&id_priv->qp_mutex); | |
559 | return ret; | |
e51060f0 SH |
560 | } |
561 | ||
5851bb89 SH |
562 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
563 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
564 | { |
565 | struct ib_qp_attr qp_attr; | |
566 | int qp_attr_mask, ret; | |
567 | ||
c5483388 SH |
568 | mutex_lock(&id_priv->qp_mutex); |
569 | if (!id_priv->id.qp) { | |
570 | ret = 0; | |
571 | goto out; | |
572 | } | |
e51060f0 SH |
573 | |
574 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 575 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 576 | if (ret) |
c5483388 | 577 | goto out; |
e51060f0 | 578 | |
5851bb89 SH |
579 | if (conn_param) |
580 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
581 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
582 | out: | |
583 | mutex_unlock(&id_priv->qp_mutex); | |
584 | return ret; | |
e51060f0 SH |
585 | } |
586 | ||
c5483388 | 587 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
588 | { |
589 | struct ib_qp_attr qp_attr; | |
c5483388 | 590 | int ret; |
e51060f0 | 591 | |
c5483388 SH |
592 | mutex_lock(&id_priv->qp_mutex); |
593 | if (!id_priv->id.qp) { | |
594 | ret = 0; | |
595 | goto out; | |
596 | } | |
e51060f0 SH |
597 | |
598 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
599 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
600 | out: | |
601 | mutex_unlock(&id_priv->qp_mutex); | |
602 | return ret; | |
e51060f0 SH |
603 | } |
604 | ||
c8f6a362 SH |
605 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
606 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
607 | { | |
608 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
609 | int ret; | |
3c86aa70 EC |
610 | u16 pkey; |
611 | ||
612 | if (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num) == | |
613 | IB_LINK_LAYER_INFINIBAND) | |
614 | pkey = ib_addr_get_pkey(dev_addr); | |
615 | else | |
616 | pkey = 0xffff; | |
c8f6a362 SH |
617 | |
618 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
3c86aa70 | 619 | pkey, &qp_attr->pkey_index); |
c8f6a362 SH |
620 | if (ret) |
621 | return ret; | |
622 | ||
623 | qp_attr->port_num = id_priv->id.port_num; | |
624 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
625 | ||
b26f9b99 | 626 | if (id_priv->id.qp_type == IB_QPT_UD) { |
d2ca39f2 YE |
627 | ret = cma_set_qkey(id_priv); |
628 | if (ret) | |
629 | return ret; | |
630 | ||
c8f6a362 SH |
631 | qp_attr->qkey = id_priv->qkey; |
632 | *qp_attr_mask |= IB_QP_QKEY; | |
633 | } else { | |
634 | qp_attr->qp_access_flags = 0; | |
635 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
636 | } | |
637 | return 0; | |
638 | } | |
639 | ||
e51060f0 SH |
640 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
641 | int *qp_attr_mask) | |
642 | { | |
643 | struct rdma_id_private *id_priv; | |
c8f6a362 | 644 | int ret = 0; |
e51060f0 SH |
645 | |
646 | id_priv = container_of(id, struct rdma_id_private, id); | |
07ebafba TT |
647 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
648 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 649 | if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) |
c8f6a362 SH |
650 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); |
651 | else | |
652 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
653 | qp_attr_mask); | |
e51060f0 SH |
654 | if (qp_attr->qp_state == IB_QPS_RTR) |
655 | qp_attr->rq_psn = id_priv->seq_num; | |
656 | break; | |
07ebafba | 657 | case RDMA_TRANSPORT_IWARP: |
c8f6a362 | 658 | if (!id_priv->cm_id.iw) { |
8f076531 | 659 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
660 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
661 | } else | |
662 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
663 | qp_attr_mask); | |
07ebafba | 664 | break; |
e51060f0 SH |
665 | default: |
666 | ret = -ENOSYS; | |
667 | break; | |
668 | } | |
669 | ||
670 | return ret; | |
671 | } | |
672 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
673 | ||
674 | static inline int cma_zero_addr(struct sockaddr *addr) | |
675 | { | |
676 | struct in6_addr *ip6; | |
677 | ||
678 | if (addr->sa_family == AF_INET) | |
6360a02a JP |
679 | return ipv4_is_zeronet( |
680 | ((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
e51060f0 SH |
681 | else { |
682 | ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; | |
683 | return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | | |
5fd571cb | 684 | ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; |
e51060f0 SH |
685 | } |
686 | } | |
687 | ||
688 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
689 | { | |
1f5175ad AS |
690 | if (addr->sa_family == AF_INET) |
691 | return ipv4_is_loopback( | |
692 | ((struct sockaddr_in *) addr)->sin_addr.s_addr); | |
693 | else | |
694 | return ipv6_addr_loopback( | |
695 | &((struct sockaddr_in6 *) addr)->sin6_addr); | |
e51060f0 SH |
696 | } |
697 | ||
698 | static inline int cma_any_addr(struct sockaddr *addr) | |
699 | { | |
700 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
701 | } | |
702 | ||
43b752da HS |
703 | static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) |
704 | { | |
705 | if (src->sa_family != dst->sa_family) | |
706 | return -1; | |
707 | ||
708 | switch (src->sa_family) { | |
709 | case AF_INET: | |
710 | return ((struct sockaddr_in *) src)->sin_addr.s_addr != | |
711 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
712 | default: | |
713 | return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, | |
714 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
715 | } | |
716 | } | |
717 | ||
628e5f6d SH |
718 | static inline __be16 cma_port(struct sockaddr *addr) |
719 | { | |
720 | if (addr->sa_family == AF_INET) | |
721 | return ((struct sockaddr_in *) addr)->sin_port; | |
722 | else | |
723 | return ((struct sockaddr_in6 *) addr)->sin6_port; | |
724 | } | |
725 | ||
e51060f0 SH |
726 | static inline int cma_any_port(struct sockaddr *addr) |
727 | { | |
628e5f6d | 728 | return !cma_port(addr); |
e51060f0 SH |
729 | } |
730 | ||
731 | static int cma_get_net_info(void *hdr, enum rdma_port_space ps, | |
1b90c137 | 732 | u8 *ip_ver, __be16 *port, |
e51060f0 SH |
733 | union cma_ip_addr **src, union cma_ip_addr **dst) |
734 | { | |
735 | switch (ps) { | |
736 | case RDMA_PS_SDP: | |
737 | if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) != | |
738 | SDP_MAJ_VERSION) | |
739 | return -EINVAL; | |
740 | ||
741 | *ip_ver = sdp_get_ip_ver(hdr); | |
742 | *port = ((struct sdp_hh *) hdr)->port; | |
743 | *src = &((struct sdp_hh *) hdr)->src_addr; | |
744 | *dst = &((struct sdp_hh *) hdr)->dst_addr; | |
745 | break; | |
746 | default: | |
747 | if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION) | |
748 | return -EINVAL; | |
749 | ||
750 | *ip_ver = cma_get_ip_ver(hdr); | |
751 | *port = ((struct cma_hdr *) hdr)->port; | |
752 | *src = &((struct cma_hdr *) hdr)->src_addr; | |
753 | *dst = &((struct cma_hdr *) hdr)->dst_addr; | |
754 | break; | |
755 | } | |
756 | ||
757 | if (*ip_ver != 4 && *ip_ver != 6) | |
758 | return -EINVAL; | |
759 | return 0; | |
760 | } | |
761 | ||
762 | static void cma_save_net_info(struct rdma_addr *addr, | |
763 | struct rdma_addr *listen_addr, | |
1b90c137 | 764 | u8 ip_ver, __be16 port, |
e51060f0 SH |
765 | union cma_ip_addr *src, union cma_ip_addr *dst) |
766 | { | |
767 | struct sockaddr_in *listen4, *ip4; | |
768 | struct sockaddr_in6 *listen6, *ip6; | |
769 | ||
770 | switch (ip_ver) { | |
771 | case 4: | |
772 | listen4 = (struct sockaddr_in *) &listen_addr->src_addr; | |
773 | ip4 = (struct sockaddr_in *) &addr->src_addr; | |
774 | ip4->sin_family = listen4->sin_family; | |
775 | ip4->sin_addr.s_addr = dst->ip4.addr; | |
776 | ip4->sin_port = listen4->sin_port; | |
777 | ||
778 | ip4 = (struct sockaddr_in *) &addr->dst_addr; | |
779 | ip4->sin_family = listen4->sin_family; | |
780 | ip4->sin_addr.s_addr = src->ip4.addr; | |
781 | ip4->sin_port = port; | |
782 | break; | |
783 | case 6: | |
784 | listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr; | |
785 | ip6 = (struct sockaddr_in6 *) &addr->src_addr; | |
786 | ip6->sin6_family = listen6->sin6_family; | |
787 | ip6->sin6_addr = dst->ip6; | |
788 | ip6->sin6_port = listen6->sin6_port; | |
789 | ||
790 | ip6 = (struct sockaddr_in6 *) &addr->dst_addr; | |
791 | ip6->sin6_family = listen6->sin6_family; | |
792 | ip6->sin6_addr = src->ip6; | |
793 | ip6->sin6_port = port; | |
794 | break; | |
795 | default: | |
796 | break; | |
797 | } | |
798 | } | |
799 | ||
800 | static inline int cma_user_data_offset(enum rdma_port_space ps) | |
801 | { | |
802 | switch (ps) { | |
803 | case RDMA_PS_SDP: | |
804 | return 0; | |
805 | default: | |
806 | return sizeof(struct cma_hdr); | |
807 | } | |
808 | } | |
809 | ||
e51060f0 SH |
810 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
811 | { | |
3c86aa70 EC |
812 | switch (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num)) { |
813 | case IB_LINK_LAYER_INFINIBAND: | |
e51060f0 SH |
814 | if (id_priv->query) |
815 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
816 | break; | |
817 | default: | |
818 | break; | |
819 | } | |
820 | } | |
821 | ||
e51060f0 SH |
822 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
823 | { | |
824 | struct rdma_id_private *dev_id_priv; | |
825 | ||
d02d1f53 SH |
826 | /* |
827 | * Remove from listen_any_list to prevent added devices from spawning | |
828 | * additional listen requests. | |
829 | */ | |
e51060f0 SH |
830 | mutex_lock(&lock); |
831 | list_del(&id_priv->list); | |
832 | ||
833 | while (!list_empty(&id_priv->listen_list)) { | |
834 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
835 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
836 | /* sync with device removal to avoid duplicate destruction */ |
837 | list_del_init(&dev_id_priv->list); | |
838 | list_del(&dev_id_priv->listen_list); | |
839 | mutex_unlock(&lock); | |
840 | ||
841 | rdma_destroy_id(&dev_id_priv->id); | |
842 | mutex_lock(&lock); | |
e51060f0 SH |
843 | } |
844 | mutex_unlock(&lock); | |
845 | } | |
846 | ||
847 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 848 | enum rdma_cm_state state) |
e51060f0 SH |
849 | { |
850 | switch (state) { | |
550e5ca7 | 851 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
852 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
853 | break; | |
550e5ca7 | 854 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
855 | cma_cancel_route(id_priv); |
856 | break; | |
550e5ca7 | 857 | case RDMA_CM_LISTEN: |
3f446754 RD |
858 | if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr) |
859 | && !id_priv->cma_dev) | |
e51060f0 SH |
860 | cma_cancel_listens(id_priv); |
861 | break; | |
862 | default: | |
863 | break; | |
864 | } | |
865 | } | |
866 | ||
867 | static void cma_release_port(struct rdma_id_private *id_priv) | |
868 | { | |
869 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
870 | ||
871 | if (!bind_list) | |
872 | return; | |
873 | ||
874 | mutex_lock(&lock); | |
875 | hlist_del(&id_priv->node); | |
876 | if (hlist_empty(&bind_list->owners)) { | |
877 | idr_remove(bind_list->ps, bind_list->port); | |
878 | kfree(bind_list); | |
879 | } | |
880 | mutex_unlock(&lock); | |
881 | } | |
882 | ||
c8f6a362 SH |
883 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
884 | { | |
885 | struct cma_multicast *mc; | |
886 | ||
887 | while (!list_empty(&id_priv->mc_list)) { | |
888 | mc = container_of(id_priv->mc_list.next, | |
889 | struct cma_multicast, list); | |
890 | list_del(&mc->list); | |
3c86aa70 EC |
891 | switch (rdma_port_get_link_layer(id_priv->cma_dev->device, id_priv->id.port_num)) { |
892 | case IB_LINK_LAYER_INFINIBAND: | |
893 | ib_sa_free_multicast(mc->multicast.ib); | |
894 | kfree(mc); | |
895 | break; | |
896 | case IB_LINK_LAYER_ETHERNET: | |
897 | kref_put(&mc->mcref, release_mc); | |
898 | break; | |
899 | default: | |
900 | break; | |
901 | } | |
c8f6a362 SH |
902 | } |
903 | } | |
904 | ||
e51060f0 SH |
905 | void rdma_destroy_id(struct rdma_cm_id *id) |
906 | { | |
907 | struct rdma_id_private *id_priv; | |
550e5ca7 | 908 | enum rdma_cm_state state; |
e51060f0 SH |
909 | |
910 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 911 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
912 | cma_cancel_operation(id_priv, state); |
913 | ||
a396d43a SH |
914 | /* |
915 | * Wait for any active callback to finish. New callbacks will find | |
916 | * the id_priv state set to destroying and abort. | |
917 | */ | |
918 | mutex_lock(&id_priv->handler_mutex); | |
919 | mutex_unlock(&id_priv->handler_mutex); | |
920 | ||
e51060f0 | 921 | if (id_priv->cma_dev) { |
3c86aa70 | 922 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
07ebafba | 923 | case RDMA_TRANSPORT_IB: |
0c9361fc | 924 | if (id_priv->cm_id.ib) |
e51060f0 SH |
925 | ib_destroy_cm_id(id_priv->cm_id.ib); |
926 | break; | |
07ebafba | 927 | case RDMA_TRANSPORT_IWARP: |
0c9361fc | 928 | if (id_priv->cm_id.iw) |
07ebafba TT |
929 | iw_destroy_cm_id(id_priv->cm_id.iw); |
930 | break; | |
e51060f0 SH |
931 | default: |
932 | break; | |
933 | } | |
c8f6a362 | 934 | cma_leave_mc_groups(id_priv); |
a396d43a | 935 | cma_release_dev(id_priv); |
e51060f0 SH |
936 | } |
937 | ||
938 | cma_release_port(id_priv); | |
939 | cma_deref_id(id_priv); | |
940 | wait_for_completion(&id_priv->comp); | |
941 | ||
d02d1f53 SH |
942 | if (id_priv->internal_id) |
943 | cma_deref_id(id_priv->id.context); | |
944 | ||
e51060f0 SH |
945 | kfree(id_priv->id.route.path_rec); |
946 | kfree(id_priv); | |
947 | } | |
948 | EXPORT_SYMBOL(rdma_destroy_id); | |
949 | ||
950 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
951 | { | |
952 | int ret; | |
953 | ||
5851bb89 | 954 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
955 | if (ret) |
956 | goto reject; | |
957 | ||
5851bb89 | 958 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
959 | if (ret) |
960 | goto reject; | |
961 | ||
962 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
963 | if (ret) | |
964 | goto reject; | |
965 | ||
966 | return 0; | |
967 | reject: | |
c5483388 | 968 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
969 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
970 | NULL, 0, NULL, 0); | |
971 | return ret; | |
972 | } | |
973 | ||
974 | static int cma_verify_rep(struct rdma_id_private *id_priv, void *data) | |
975 | { | |
976 | if (id_priv->id.ps == RDMA_PS_SDP && | |
977 | sdp_get_majv(((struct sdp_hah *) data)->sdp_version) != | |
978 | SDP_MAJ_VERSION) | |
979 | return -EINVAL; | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
a1b1b61f SH |
984 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
985 | struct ib_cm_rep_event_param *rep_data, | |
986 | void *private_data) | |
987 | { | |
988 | event->param.conn.private_data = private_data; | |
989 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
990 | event->param.conn.responder_resources = rep_data->responder_resources; | |
991 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
992 | event->param.conn.flow_control = rep_data->flow_control; | |
993 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
994 | event->param.conn.srq = rep_data->srq; | |
995 | event->param.conn.qp_num = rep_data->remote_qpn; | |
996 | } | |
997 | ||
e51060f0 SH |
998 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
999 | { | |
1000 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
1001 | struct rdma_cm_event event; |
1002 | int ret = 0; | |
e51060f0 | 1003 | |
38ca83a5 | 1004 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1005 | cma_disable_callback(id_priv, RDMA_CM_CONNECT)) || |
38ca83a5 | 1006 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1007 | cma_disable_callback(id_priv, RDMA_CM_DISCONNECT))) |
8aa08602 | 1008 | return 0; |
e51060f0 | 1009 | |
a1b1b61f | 1010 | memset(&event, 0, sizeof event); |
e51060f0 SH |
1011 | switch (ib_event->event) { |
1012 | case IB_CM_REQ_ERROR: | |
1013 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1014 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1015 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1016 | break; |
1017 | case IB_CM_REP_RECEIVED: | |
a1b1b61f SH |
1018 | event.status = cma_verify_rep(id_priv, ib_event->private_data); |
1019 | if (event.status) | |
1020 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
e51060f0 | 1021 | else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) { |
a1b1b61f SH |
1022 | event.status = cma_rep_recv(id_priv); |
1023 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1024 | RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 | 1025 | } else |
a1b1b61f SH |
1026 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
1027 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, | |
1028 | ib_event->private_data); | |
e51060f0 SH |
1029 | break; |
1030 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1031 | case IB_CM_USER_ESTABLISHED: |
1032 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1033 | break; |
1034 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1035 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1036 | case IB_CM_DREQ_RECEIVED: |
1037 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1038 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1039 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1040 | goto out; |
a1b1b61f | 1041 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1042 | break; |
1043 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1044 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1045 | break; | |
e51060f0 SH |
1046 | case IB_CM_MRA_RECEIVED: |
1047 | /* ignore event */ | |
1048 | goto out; | |
1049 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 1050 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1051 | event.status = ib_event->param.rej_rcvd.reason; |
1052 | event.event = RDMA_CM_EVENT_REJECTED; | |
1053 | event.param.conn.private_data = ib_event->private_data; | |
1054 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1055 | break; |
1056 | default: | |
468f2239 | 1057 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1058 | ib_event->event); |
1059 | goto out; | |
1060 | } | |
1061 | ||
a1b1b61f | 1062 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1063 | if (ret) { |
1064 | /* Destroy the CM ID by returning a non-zero value. */ | |
1065 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1066 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1067 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1068 | rdma_destroy_id(&id_priv->id); |
1069 | return ret; | |
1070 | } | |
1071 | out: | |
de910bd9 | 1072 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1073 | return ret; |
1074 | } | |
1075 | ||
628e5f6d SH |
1076 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
1077 | struct ib_cm_event *ib_event) | |
e51060f0 SH |
1078 | { |
1079 | struct rdma_id_private *id_priv; | |
1080 | struct rdma_cm_id *id; | |
1081 | struct rdma_route *rt; | |
1082 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1083 | __be16 port; |
e51060f0 | 1084 | u8 ip_ver; |
64c5e613 | 1085 | int ret; |
e51060f0 | 1086 | |
3f168d2b KK |
1087 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1088 | &ip_ver, &port, &src, &dst)) | |
0c9361fc | 1089 | return NULL; |
3f168d2b | 1090 | |
e51060f0 | 1091 | id = rdma_create_id(listen_id->event_handler, listen_id->context, |
b26f9b99 | 1092 | listen_id->ps, ib_event->param.req_rcvd.qp_type); |
e51060f0 | 1093 | if (IS_ERR(id)) |
0c9361fc | 1094 | return NULL; |
3f168d2b KK |
1095 | |
1096 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1097 | ip_ver, port, src, dst); | |
e51060f0 SH |
1098 | |
1099 | rt = &id->route; | |
1100 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1101 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1102 | GFP_KERNEL); | |
e51060f0 | 1103 | if (!rt->path_rec) |
0c9361fc | 1104 | goto err; |
e51060f0 | 1105 | |
e51060f0 SH |
1106 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1107 | if (rt->num_paths == 2) | |
1108 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1109 | ||
6f8372b6 SH |
1110 | if (cma_any_addr((struct sockaddr *) &rt->addr.src_addr)) { |
1111 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; | |
1112 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
1113 | ib_addr_set_pkey(&rt->addr.dev_addr, rt->path_rec[0].pkey); | |
1114 | } else { | |
1115 | ret = rdma_translate_ip((struct sockaddr *) &rt->addr.src_addr, | |
1116 | &rt->addr.dev_addr); | |
1117 | if (ret) | |
0c9361fc | 1118 | goto err; |
6f8372b6 SH |
1119 | } |
1120 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 SH |
1121 | |
1122 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1123 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 1124 | return id_priv; |
3f168d2b | 1125 | |
3f168d2b | 1126 | err: |
0c9361fc | 1127 | rdma_destroy_id(id); |
e51060f0 SH |
1128 | return NULL; |
1129 | } | |
1130 | ||
628e5f6d SH |
1131 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
1132 | struct ib_cm_event *ib_event) | |
1133 | { | |
1134 | struct rdma_id_private *id_priv; | |
1135 | struct rdma_cm_id *id; | |
1136 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1137 | __be16 port; |
628e5f6d SH |
1138 | u8 ip_ver; |
1139 | int ret; | |
1140 | ||
1141 | id = rdma_create_id(listen_id->event_handler, listen_id->context, | |
b26f9b99 | 1142 | listen_id->ps, IB_QPT_UD); |
628e5f6d SH |
1143 | if (IS_ERR(id)) |
1144 | return NULL; | |
1145 | ||
1146 | ||
1147 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, | |
1148 | &ip_ver, &port, &src, &dst)) | |
1149 | goto err; | |
1150 | ||
1151 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1152 | ip_ver, port, src, dst); | |
1153 | ||
6f8372b6 SH |
1154 | if (!cma_any_addr((struct sockaddr *) &id->route.addr.src_addr)) { |
1155 | ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr, | |
1156 | &id->route.addr.dev_addr); | |
1157 | if (ret) | |
1158 | goto err; | |
1159 | } | |
628e5f6d SH |
1160 | |
1161 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1162 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
1163 | return id_priv; |
1164 | err: | |
1165 | rdma_destroy_id(id); | |
1166 | return NULL; | |
1167 | } | |
1168 | ||
a1b1b61f SH |
1169 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1170 | struct ib_cm_req_event_param *req_data, | |
1171 | void *private_data, int offset) | |
1172 | { | |
1173 | event->param.conn.private_data = private_data + offset; | |
1174 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1175 | event->param.conn.responder_resources = req_data->responder_resources; | |
1176 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1177 | event->param.conn.flow_control = req_data->flow_control; | |
1178 | event->param.conn.retry_count = req_data->retry_count; | |
1179 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1180 | event->param.conn.srq = req_data->srq; | |
1181 | event->param.conn.qp_num = req_data->remote_qpn; | |
1182 | } | |
1183 | ||
9595480c HS |
1184 | static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) |
1185 | { | |
1186 | return (((ib_event->event == IB_CM_REQ_RECEIVED) || | |
1187 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || | |
1188 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
1189 | (id->qp_type == IB_QPT_UD)) || | |
1190 | (!id->qp_type)); | |
1191 | } | |
1192 | ||
e51060f0 SH |
1193 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1194 | { | |
1195 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1196 | struct rdma_cm_event event; |
e51060f0 SH |
1197 | int offset, ret; |
1198 | ||
1199 | listen_id = cm_id->context; | |
9595480c HS |
1200 | if (!cma_check_req_qp_type(&listen_id->id, ib_event)) |
1201 | return -EINVAL; | |
1202 | ||
550e5ca7 | 1203 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1204 | return -ECONNABORTED; |
e51060f0 | 1205 | |
628e5f6d SH |
1206 | memset(&event, 0, sizeof event); |
1207 | offset = cma_user_data_offset(listen_id->id.ps); | |
1208 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
9595480c | 1209 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
628e5f6d SH |
1210 | conn_id = cma_new_udp_id(&listen_id->id, ib_event); |
1211 | event.param.ud.private_data = ib_event->private_data + offset; | |
1212 | event.param.ud.private_data_len = | |
1213 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1214 | } else { | |
1215 | conn_id = cma_new_conn_id(&listen_id->id, ib_event); | |
1216 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, | |
1217 | ib_event->private_data, offset); | |
1218 | } | |
e51060f0 SH |
1219 | if (!conn_id) { |
1220 | ret = -ENOMEM; | |
1221 | goto out; | |
1222 | } | |
1223 | ||
de910bd9 | 1224 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
07ebafba | 1225 | ret = cma_acquire_dev(conn_id); |
a1a733f6 KK |
1226 | if (ret) |
1227 | goto release_conn_id; | |
e51060f0 SH |
1228 | |
1229 | conn_id->cm_id.ib = cm_id; | |
1230 | cm_id->context = conn_id; | |
1231 | cm_id->cm_handler = cma_ib_handler; | |
1232 | ||
25ae21a1 SH |
1233 | /* |
1234 | * Protect against the user destroying conn_id from another thread | |
1235 | * until we're done accessing it. | |
1236 | */ | |
1237 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1238 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
45d9478d | 1239 | if (!ret) { |
ead595ae SH |
1240 | /* |
1241 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1242 | * while we're accessing the cm_id. | |
1243 | */ | |
1244 | mutex_lock(&lock); | |
b26f9b99 | 1245 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && (conn_id->id.qp_type != IB_QPT_UD)) |
ead595ae SH |
1246 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); |
1247 | mutex_unlock(&lock); | |
de910bd9 | 1248 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1249 | cma_deref_id(conn_id); |
a1a733f6 | 1250 | goto out; |
45d9478d | 1251 | } |
25ae21a1 | 1252 | cma_deref_id(conn_id); |
a1a733f6 KK |
1253 | |
1254 | /* Destroy the CM ID by returning a non-zero value. */ | |
1255 | conn_id->cm_id.ib = NULL; | |
1256 | ||
1257 | release_conn_id: | |
550e5ca7 | 1258 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1259 | mutex_unlock(&conn_id->handler_mutex); |
a1a733f6 KK |
1260 | rdma_destroy_id(&conn_id->id); |
1261 | ||
e51060f0 | 1262 | out: |
de910bd9 | 1263 | mutex_unlock(&listen_id->handler_mutex); |
e51060f0 SH |
1264 | return ret; |
1265 | } | |
1266 | ||
1267 | static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr) | |
1268 | { | |
628e5f6d | 1269 | return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 SH |
1270 | } |
1271 | ||
1272 | static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr, | |
1273 | struct ib_cm_compare_data *compare) | |
1274 | { | |
1275 | struct cma_hdr *cma_data, *cma_mask; | |
1276 | struct sdp_hh *sdp_data, *sdp_mask; | |
1b90c137 | 1277 | __be32 ip4_addr; |
e51060f0 SH |
1278 | struct in6_addr ip6_addr; |
1279 | ||
1280 | memset(compare, 0, sizeof *compare); | |
1281 | cma_data = (void *) compare->data; | |
1282 | cma_mask = (void *) compare->mask; | |
1283 | sdp_data = (void *) compare->data; | |
1284 | sdp_mask = (void *) compare->mask; | |
1285 | ||
1286 | switch (addr->sa_family) { | |
1287 | case AF_INET: | |
1288 | ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | |
1289 | if (ps == RDMA_PS_SDP) { | |
1290 | sdp_set_ip_ver(sdp_data, 4); | |
1291 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1292 | sdp_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1293 | sdp_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1294 | } else { |
1295 | cma_set_ip_ver(cma_data, 4); | |
1296 | cma_set_ip_ver(cma_mask, 0xF); | |
1297 | cma_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1298 | cma_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1299 | } |
1300 | break; | |
1301 | case AF_INET6: | |
1302 | ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr; | |
1303 | if (ps == RDMA_PS_SDP) { | |
1304 | sdp_set_ip_ver(sdp_data, 6); | |
1305 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1306 | sdp_data->dst_addr.ip6 = ip6_addr; | |
1307 | memset(&sdp_mask->dst_addr.ip6, 0xFF, | |
1308 | sizeof sdp_mask->dst_addr.ip6); | |
1309 | } else { | |
1310 | cma_set_ip_ver(cma_data, 6); | |
1311 | cma_set_ip_ver(cma_mask, 0xF); | |
1312 | cma_data->dst_addr.ip6 = ip6_addr; | |
1313 | memset(&cma_mask->dst_addr.ip6, 0xFF, | |
1314 | sizeof cma_mask->dst_addr.ip6); | |
1315 | } | |
1316 | break; | |
1317 | default: | |
1318 | break; | |
1319 | } | |
1320 | } | |
1321 | ||
07ebafba TT |
1322 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1323 | { | |
1324 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1325 | struct rdma_cm_event event; |
07ebafba TT |
1326 | struct sockaddr_in *sin; |
1327 | int ret = 0; | |
1328 | ||
550e5ca7 | 1329 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
be65f086 | 1330 | return 0; |
07ebafba | 1331 | |
be65f086 | 1332 | memset(&event, 0, sizeof event); |
07ebafba TT |
1333 | switch (iw_event->event) { |
1334 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1335 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1336 | break; |
1337 | case IW_CM_EVENT_CONNECT_REPLY: | |
1338 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1339 | *sin = iw_event->local_addr; | |
1340 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.dst_addr; | |
1341 | *sin = iw_event->remote_addr; | |
881a045f SW |
1342 | switch (iw_event->status) { |
1343 | case 0: | |
a1b1b61f | 1344 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1345 | event.param.conn.initiator_depth = iw_event->ird; |
1346 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
1347 | break; |
1348 | case -ECONNRESET: | |
1349 | case -ECONNREFUSED: | |
1350 | event.event = RDMA_CM_EVENT_REJECTED; | |
1351 | break; | |
1352 | case -ETIMEDOUT: | |
1353 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1354 | break; | |
1355 | default: | |
1356 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1357 | break; | |
1358 | } | |
07ebafba TT |
1359 | break; |
1360 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1361 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1362 | event.param.conn.initiator_depth = iw_event->ird; |
1363 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
1364 | break; |
1365 | default: | |
1366 | BUG_ON(1); | |
1367 | } | |
1368 | ||
a1b1b61f SH |
1369 | event.status = iw_event->status; |
1370 | event.param.conn.private_data = iw_event->private_data; | |
1371 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1372 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1373 | if (ret) { |
1374 | /* Destroy the CM ID by returning a non-zero value. */ | |
1375 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 1376 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1377 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1378 | rdma_destroy_id(&id_priv->id); |
1379 | return ret; | |
1380 | } | |
1381 | ||
de910bd9 | 1382 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1383 | return ret; |
1384 | } | |
1385 | ||
1386 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1387 | struct iw_cm_event *iw_event) | |
1388 | { | |
1389 | struct rdma_cm_id *new_cm_id; | |
1390 | struct rdma_id_private *listen_id, *conn_id; | |
1391 | struct sockaddr_in *sin; | |
1392 | struct net_device *dev = NULL; | |
a1b1b61f | 1393 | struct rdma_cm_event event; |
07ebafba | 1394 | int ret; |
8d8293cf | 1395 | struct ib_device_attr attr; |
07ebafba TT |
1396 | |
1397 | listen_id = cm_id->context; | |
550e5ca7 | 1398 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1399 | return -ECONNABORTED; |
07ebafba TT |
1400 | |
1401 | /* Create a new RDMA id for the new IW CM ID */ | |
1402 | new_cm_id = rdma_create_id(listen_id->id.event_handler, | |
1403 | listen_id->id.context, | |
b26f9b99 | 1404 | RDMA_PS_TCP, IB_QPT_RC); |
10f32065 | 1405 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1406 | ret = -ENOMEM; |
1407 | goto out; | |
1408 | } | |
1409 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1410 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 1411 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 1412 | |
1ab35276 | 1413 | dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr); |
07ebafba TT |
1414 | if (!dev) { |
1415 | ret = -EADDRNOTAVAIL; | |
de910bd9 | 1416 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1417 | rdma_destroy_id(new_cm_id); |
1418 | goto out; | |
1419 | } | |
1420 | ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL); | |
1421 | if (ret) { | |
de910bd9 | 1422 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1423 | rdma_destroy_id(new_cm_id); |
1424 | goto out; | |
1425 | } | |
1426 | ||
1427 | ret = cma_acquire_dev(conn_id); | |
1428 | if (ret) { | |
de910bd9 | 1429 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1430 | rdma_destroy_id(new_cm_id); |
1431 | goto out; | |
1432 | } | |
1433 | ||
1434 | conn_id->cm_id.iw = cm_id; | |
1435 | cm_id->context = conn_id; | |
1436 | cm_id->cm_handler = cma_iw_handler; | |
1437 | ||
1438 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.src_addr; | |
1439 | *sin = iw_event->local_addr; | |
1440 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr; | |
1441 | *sin = iw_event->remote_addr; | |
1442 | ||
8d8293cf SW |
1443 | ret = ib_query_device(conn_id->id.device, &attr); |
1444 | if (ret) { | |
de910bd9 | 1445 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1446 | rdma_destroy_id(new_cm_id); |
1447 | goto out; | |
1448 | } | |
1449 | ||
a1b1b61f SH |
1450 | memset(&event, 0, sizeof event); |
1451 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1452 | event.param.conn.private_data = iw_event->private_data; | |
1453 | event.param.conn.private_data_len = iw_event->private_data_len; | |
3ebeebc3 KS |
1454 | event.param.conn.initiator_depth = iw_event->ird; |
1455 | event.param.conn.responder_resources = iw_event->ord; | |
25ae21a1 SH |
1456 | |
1457 | /* | |
1458 | * Protect against the user destroying conn_id from another thread | |
1459 | * until we're done accessing it. | |
1460 | */ | |
1461 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1462 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1463 | if (ret) { |
1464 | /* User wants to destroy the CM ID */ | |
1465 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 1466 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1467 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1468 | cma_deref_id(conn_id); |
07ebafba | 1469 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1470 | goto out; |
07ebafba TT |
1471 | } |
1472 | ||
de910bd9 | 1473 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1474 | cma_deref_id(conn_id); |
de910bd9 | 1475 | |
07ebafba TT |
1476 | out: |
1477 | if (dev) | |
1478 | dev_put(dev); | |
de910bd9 | 1479 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1480 | return ret; |
1481 | } | |
1482 | ||
e51060f0 SH |
1483 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1484 | { | |
1485 | struct ib_cm_compare_data compare_data; | |
1486 | struct sockaddr *addr; | |
0c9361fc | 1487 | struct ib_cm_id *id; |
e51060f0 SH |
1488 | __be64 svc_id; |
1489 | int ret; | |
1490 | ||
0c9361fc JM |
1491 | id = ib_create_cm_id(id_priv->id.device, cma_req_handler, id_priv); |
1492 | if (IS_ERR(id)) | |
1493 | return PTR_ERR(id); | |
1494 | ||
1495 | id_priv->cm_id.ib = id; | |
e51060f0 | 1496 | |
3f446754 | 1497 | addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
e51060f0 SH |
1498 | svc_id = cma_get_service_id(id_priv->id.ps, addr); |
1499 | if (cma_any_addr(addr)) | |
1500 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL); | |
1501 | else { | |
1502 | cma_set_compare_data(id_priv->id.ps, addr, &compare_data); | |
1503 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, &compare_data); | |
1504 | } | |
1505 | ||
1506 | if (ret) { | |
1507 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
1508 | id_priv->cm_id.ib = NULL; | |
1509 | } | |
1510 | ||
1511 | return ret; | |
1512 | } | |
1513 | ||
07ebafba TT |
1514 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1515 | { | |
1516 | int ret; | |
1517 | struct sockaddr_in *sin; | |
0c9361fc JM |
1518 | struct iw_cm_id *id; |
1519 | ||
1520 | id = iw_create_cm_id(id_priv->id.device, | |
1521 | iw_conn_req_handler, | |
1522 | id_priv); | |
1523 | if (IS_ERR(id)) | |
1524 | return PTR_ERR(id); | |
07ebafba | 1525 | |
0c9361fc | 1526 | id_priv->cm_id.iw = id; |
07ebafba TT |
1527 | |
1528 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1529 | id_priv->cm_id.iw->local_addr = *sin; | |
1530 | ||
1531 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
1532 | ||
1533 | if (ret) { | |
1534 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
1535 | id_priv->cm_id.iw = NULL; | |
1536 | } | |
1537 | ||
1538 | return ret; | |
1539 | } | |
1540 | ||
e51060f0 SH |
1541 | static int cma_listen_handler(struct rdma_cm_id *id, |
1542 | struct rdma_cm_event *event) | |
1543 | { | |
1544 | struct rdma_id_private *id_priv = id->context; | |
1545 | ||
1546 | id->context = id_priv->id.context; | |
1547 | id->event_handler = id_priv->id.event_handler; | |
1548 | return id_priv->id.event_handler(id, event); | |
1549 | } | |
1550 | ||
1551 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
1552 | struct cma_device *cma_dev) | |
1553 | { | |
1554 | struct rdma_id_private *dev_id_priv; | |
1555 | struct rdma_cm_id *id; | |
1556 | int ret; | |
1557 | ||
b26f9b99 SH |
1558 | id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps, |
1559 | id_priv->id.qp_type); | |
e51060f0 SH |
1560 | if (IS_ERR(id)) |
1561 | return; | |
1562 | ||
1563 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
1564 | ||
550e5ca7 | 1565 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
e51060f0 | 1566 | memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr, |
3f446754 | 1567 | ip_addr_size((struct sockaddr *) &id_priv->id.route.addr.src_addr)); |
e51060f0 SH |
1568 | |
1569 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
1570 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
1571 | atomic_inc(&id_priv->refcount); |
1572 | dev_id_priv->internal_id = 1; | |
e51060f0 SH |
1573 | |
1574 | ret = rdma_listen(id, id_priv->backlog); | |
1575 | if (ret) | |
d02d1f53 | 1576 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 1577 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
1578 | } |
1579 | ||
1580 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
1581 | { | |
1582 | struct cma_device *cma_dev; | |
1583 | ||
1584 | mutex_lock(&lock); | |
1585 | list_add_tail(&id_priv->list, &listen_any_list); | |
1586 | list_for_each_entry(cma_dev, &dev_list, list) | |
1587 | cma_listen_on_dev(id_priv, cma_dev); | |
1588 | mutex_unlock(&lock); | |
1589 | } | |
1590 | ||
a81c994d SH |
1591 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
1592 | { | |
1593 | struct rdma_id_private *id_priv; | |
1594 | ||
1595 | id_priv = container_of(id, struct rdma_id_private, id); | |
1596 | id_priv->tos = (u8) tos; | |
1597 | } | |
1598 | EXPORT_SYMBOL(rdma_set_service_type); | |
1599 | ||
e51060f0 SH |
1600 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
1601 | void *context) | |
1602 | { | |
1603 | struct cma_work *work = context; | |
1604 | struct rdma_route *route; | |
1605 | ||
1606 | route = &work->id->id.route; | |
1607 | ||
1608 | if (!status) { | |
1609 | route->num_paths = 1; | |
1610 | *route->path_rec = *path_rec; | |
1611 | } else { | |
550e5ca7 NM |
1612 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1613 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 1614 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 1615 | work->event.status = status; |
e51060f0 SH |
1616 | } |
1617 | ||
1618 | queue_work(cma_wq, &work->work); | |
1619 | } | |
1620 | ||
1621 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
1622 | struct cma_work *work) | |
1623 | { | |
a81c994d | 1624 | struct rdma_addr *addr = &id_priv->id.route.addr; |
e51060f0 | 1625 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
1626 | ib_sa_comp_mask comp_mask; |
1627 | struct sockaddr_in6 *sin6; | |
e51060f0 SH |
1628 | |
1629 | memset(&path_rec, 0, sizeof path_rec); | |
6f8372b6 SH |
1630 | rdma_addr_get_sgid(&addr->dev_addr, &path_rec.sgid); |
1631 | rdma_addr_get_dgid(&addr->dev_addr, &path_rec.dgid); | |
a81c994d | 1632 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr)); |
e51060f0 | 1633 | path_rec.numb_path = 1; |
962063e6 | 1634 | path_rec.reversible = 1; |
3f446754 RD |
1635 | path_rec.service_id = cma_get_service_id(id_priv->id.ps, |
1636 | (struct sockaddr *) &addr->dst_addr); | |
a81c994d SH |
1637 | |
1638 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
1639 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
1640 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
1641 | ||
3f446754 | 1642 | if (addr->src_addr.ss_family == AF_INET) { |
a81c994d SH |
1643 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
1644 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
1645 | } else { | |
1646 | sin6 = (struct sockaddr_in6 *) &addr->src_addr; | |
1647 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); | |
1648 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
1649 | } | |
e51060f0 | 1650 | |
c1a0b23b | 1651 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
1652 | id_priv->id.port_num, &path_rec, |
1653 | comp_mask, timeout_ms, | |
1654 | GFP_KERNEL, cma_query_handler, | |
1655 | work, &id_priv->query); | |
e51060f0 SH |
1656 | |
1657 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
1658 | } | |
1659 | ||
c4028958 | 1660 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 1661 | { |
c4028958 | 1662 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
1663 | struct rdma_id_private *id_priv = work->id; |
1664 | int destroy = 0; | |
1665 | ||
de910bd9 | 1666 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
1667 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
1668 | goto out; | |
1669 | ||
1670 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 1671 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1672 | destroy = 1; |
1673 | } | |
1674 | out: | |
de910bd9 | 1675 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1676 | cma_deref_id(id_priv); |
1677 | if (destroy) | |
1678 | rdma_destroy_id(&id_priv->id); | |
1679 | kfree(work); | |
1680 | } | |
1681 | ||
dd5bdff8 OG |
1682 | static void cma_ndev_work_handler(struct work_struct *_work) |
1683 | { | |
1684 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
1685 | struct rdma_id_private *id_priv = work->id; | |
1686 | int destroy = 0; | |
1687 | ||
1688 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
1689 | if (id_priv->state == RDMA_CM_DESTROYING || |
1690 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
1691 | goto out; |
1692 | ||
1693 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 1694 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
1695 | destroy = 1; |
1696 | } | |
1697 | ||
1698 | out: | |
1699 | mutex_unlock(&id_priv->handler_mutex); | |
1700 | cma_deref_id(id_priv); | |
1701 | if (destroy) | |
1702 | rdma_destroy_id(&id_priv->id); | |
1703 | kfree(work); | |
1704 | } | |
1705 | ||
e51060f0 SH |
1706 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
1707 | { | |
1708 | struct rdma_route *route = &id_priv->id.route; | |
1709 | struct cma_work *work; | |
1710 | int ret; | |
1711 | ||
1712 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1713 | if (!work) | |
1714 | return -ENOMEM; | |
1715 | ||
1716 | work->id = id_priv; | |
c4028958 | 1717 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
1718 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1719 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
e51060f0 SH |
1720 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1721 | ||
1722 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1723 | if (!route->path_rec) { | |
1724 | ret = -ENOMEM; | |
1725 | goto err1; | |
1726 | } | |
1727 | ||
1728 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
1729 | if (ret) | |
1730 | goto err2; | |
1731 | ||
1732 | return 0; | |
1733 | err2: | |
1734 | kfree(route->path_rec); | |
1735 | route->path_rec = NULL; | |
1736 | err1: | |
1737 | kfree(work); | |
1738 | return ret; | |
1739 | } | |
1740 | ||
1741 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
1742 | struct ib_sa_path_rec *path_rec, int num_paths) | |
1743 | { | |
1744 | struct rdma_id_private *id_priv; | |
1745 | int ret; | |
1746 | ||
1747 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
1748 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
1749 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
1750 | return -EINVAL; |
1751 | ||
9893e742 JL |
1752 | id->route.path_rec = kmemdup(path_rec, sizeof *path_rec * num_paths, |
1753 | GFP_KERNEL); | |
e51060f0 SH |
1754 | if (!id->route.path_rec) { |
1755 | ret = -ENOMEM; | |
1756 | goto err; | |
1757 | } | |
1758 | ||
ae2d9293 | 1759 | id->route.num_paths = num_paths; |
e51060f0 SH |
1760 | return 0; |
1761 | err: | |
550e5ca7 | 1762 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
1763 | return ret; |
1764 | } | |
1765 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
1766 | ||
07ebafba TT |
1767 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
1768 | { | |
1769 | struct cma_work *work; | |
1770 | ||
1771 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1772 | if (!work) | |
1773 | return -ENOMEM; | |
1774 | ||
1775 | work->id = id_priv; | |
c4028958 | 1776 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
1777 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1778 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
07ebafba TT |
1779 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1780 | queue_work(cma_wq, &work->work); | |
1781 | return 0; | |
1782 | } | |
1783 | ||
3c86aa70 EC |
1784 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
1785 | { | |
1786 | struct rdma_route *route = &id_priv->id.route; | |
1787 | struct rdma_addr *addr = &route->addr; | |
1788 | struct cma_work *work; | |
1789 | int ret; | |
1790 | struct sockaddr_in *src_addr = (struct sockaddr_in *)&route->addr.src_addr; | |
1791 | struct sockaddr_in *dst_addr = (struct sockaddr_in *)&route->addr.dst_addr; | |
1792 | struct net_device *ndev = NULL; | |
af7bd463 | 1793 | u16 vid; |
3c86aa70 EC |
1794 | |
1795 | if (src_addr->sin_family != dst_addr->sin_family) | |
1796 | return -EINVAL; | |
1797 | ||
1798 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1799 | if (!work) | |
1800 | return -ENOMEM; | |
1801 | ||
1802 | work->id = id_priv; | |
1803 | INIT_WORK(&work->work, cma_work_handler); | |
1804 | ||
1805 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1806 | if (!route->path_rec) { | |
1807 | ret = -ENOMEM; | |
1808 | goto err1; | |
1809 | } | |
1810 | ||
1811 | route->num_paths = 1; | |
1812 | ||
3c86aa70 EC |
1813 | if (addr->dev_addr.bound_dev_if) |
1814 | ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); | |
1815 | if (!ndev) { | |
1816 | ret = -ENODEV; | |
1817 | goto err2; | |
1818 | } | |
1819 | ||
af7bd463 EC |
1820 | vid = rdma_vlan_dev_vlan_id(ndev); |
1821 | ||
1822 | iboe_mac_vlan_to_ll(&route->path_rec->sgid, addr->dev_addr.src_dev_addr, vid); | |
1823 | iboe_mac_vlan_to_ll(&route->path_rec->dgid, addr->dev_addr.dst_dev_addr, vid); | |
1824 | ||
1825 | route->path_rec->hop_limit = 1; | |
1826 | route->path_rec->reversible = 1; | |
1827 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
1828 | route->path_rec->mtu_selector = IB_SA_EQ; | |
1829 | route->path_rec->sl = id_priv->tos >> 5; | |
1830 | ||
3c86aa70 EC |
1831 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
1832 | route->path_rec->rate_selector = IB_SA_EQ; | |
1833 | route->path_rec->rate = iboe_get_rate(ndev); | |
1834 | dev_put(ndev); | |
1835 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
1836 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
1837 | if (!route->path_rec->mtu) { | |
1838 | ret = -EINVAL; | |
1839 | goto err2; | |
1840 | } | |
1841 | ||
550e5ca7 NM |
1842 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1843 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
3c86aa70 EC |
1844 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1845 | work->event.status = 0; | |
1846 | ||
1847 | queue_work(cma_wq, &work->work); | |
1848 | ||
1849 | return 0; | |
1850 | ||
1851 | err2: | |
1852 | kfree(route->path_rec); | |
1853 | route->path_rec = NULL; | |
1854 | err1: | |
1855 | kfree(work); | |
1856 | return ret; | |
1857 | } | |
1858 | ||
e51060f0 SH |
1859 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
1860 | { | |
1861 | struct rdma_id_private *id_priv; | |
1862 | int ret; | |
1863 | ||
1864 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1865 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
1866 | return -EINVAL; |
1867 | ||
1868 | atomic_inc(&id_priv->refcount); | |
07ebafba TT |
1869 | switch (rdma_node_get_transport(id->device->node_type)) { |
1870 | case RDMA_TRANSPORT_IB: | |
3c86aa70 EC |
1871 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { |
1872 | case IB_LINK_LAYER_INFINIBAND: | |
1873 | ret = cma_resolve_ib_route(id_priv, timeout_ms); | |
1874 | break; | |
1875 | case IB_LINK_LAYER_ETHERNET: | |
1876 | ret = cma_resolve_iboe_route(id_priv); | |
1877 | break; | |
1878 | default: | |
1879 | ret = -ENOSYS; | |
1880 | } | |
e51060f0 | 1881 | break; |
07ebafba TT |
1882 | case RDMA_TRANSPORT_IWARP: |
1883 | ret = cma_resolve_iw_route(id_priv, timeout_ms); | |
1884 | break; | |
e51060f0 SH |
1885 | default: |
1886 | ret = -ENOSYS; | |
1887 | break; | |
1888 | } | |
1889 | if (ret) | |
1890 | goto err; | |
1891 | ||
1892 | return 0; | |
1893 | err: | |
550e5ca7 | 1894 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
1895 | cma_deref_id(id_priv); |
1896 | return ret; | |
1897 | } | |
1898 | EXPORT_SYMBOL(rdma_resolve_route); | |
1899 | ||
1900 | static int cma_bind_loopback(struct rdma_id_private *id_priv) | |
1901 | { | |
1902 | struct cma_device *cma_dev; | |
1903 | struct ib_port_attr port_attr; | |
f0ee3404 | 1904 | union ib_gid gid; |
e51060f0 SH |
1905 | u16 pkey; |
1906 | int ret; | |
1907 | u8 p; | |
1908 | ||
1909 | mutex_lock(&lock); | |
e82153b5 KK |
1910 | if (list_empty(&dev_list)) { |
1911 | ret = -ENODEV; | |
1912 | goto out; | |
1913 | } | |
e51060f0 SH |
1914 | list_for_each_entry(cma_dev, &dev_list, list) |
1915 | for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) | |
e82153b5 | 1916 | if (!ib_query_port(cma_dev->device, p, &port_attr) && |
e51060f0 SH |
1917 | port_attr.state == IB_PORT_ACTIVE) |
1918 | goto port_found; | |
1919 | ||
e82153b5 KK |
1920 | p = 1; |
1921 | cma_dev = list_entry(dev_list.next, struct cma_device, list); | |
e51060f0 SH |
1922 | |
1923 | port_found: | |
f0ee3404 | 1924 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
1925 | if (ret) |
1926 | goto out; | |
1927 | ||
1928 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
1929 | if (ret) | |
1930 | goto out; | |
1931 | ||
6f8372b6 | 1932 | id_priv->id.route.addr.dev_addr.dev_type = |
3c86aa70 | 1933 | (rdma_port_get_link_layer(cma_dev->device, p) == IB_LINK_LAYER_INFINIBAND) ? |
6f8372b6 SH |
1934 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
1935 | ||
1936 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
1937 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
1938 | id_priv->id.port_num = p; | |
1939 | cma_attach_to_dev(id_priv, cma_dev); | |
1940 | out: | |
1941 | mutex_unlock(&lock); | |
1942 | return ret; | |
1943 | } | |
1944 | ||
1945 | static void addr_handler(int status, struct sockaddr *src_addr, | |
1946 | struct rdma_dev_addr *dev_addr, void *context) | |
1947 | { | |
1948 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 1949 | struct rdma_cm_event event; |
e51060f0 | 1950 | |
a1b1b61f | 1951 | memset(&event, 0, sizeof event); |
de910bd9 | 1952 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
1953 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
1954 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 1955 | goto out; |
61a73c70 SH |
1956 | |
1957 | if (!status && !id_priv->cma_dev) | |
e51060f0 SH |
1958 | status = cma_acquire_dev(id_priv); |
1959 | ||
1960 | if (status) { | |
550e5ca7 NM |
1961 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
1962 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 1963 | goto out; |
a1b1b61f SH |
1964 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
1965 | event.status = status; | |
e51060f0 | 1966 | } else { |
e51060f0 SH |
1967 | memcpy(&id_priv->id.route.addr.src_addr, src_addr, |
1968 | ip_addr_size(src_addr)); | |
a1b1b61f | 1969 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 SH |
1970 | } |
1971 | ||
a1b1b61f | 1972 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 1973 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1974 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1975 | cma_deref_id(id_priv); |
1976 | rdma_destroy_id(&id_priv->id); | |
1977 | return; | |
1978 | } | |
1979 | out: | |
de910bd9 | 1980 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1981 | cma_deref_id(id_priv); |
1982 | } | |
1983 | ||
1984 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
1985 | { | |
1986 | struct cma_work *work; | |
6f8372b6 | 1987 | struct sockaddr *src, *dst; |
f0ee3404 | 1988 | union ib_gid gid; |
e51060f0 SH |
1989 | int ret; |
1990 | ||
1991 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1992 | if (!work) | |
1993 | return -ENOMEM; | |
1994 | ||
1995 | if (!id_priv->cma_dev) { | |
1996 | ret = cma_bind_loopback(id_priv); | |
1997 | if (ret) | |
1998 | goto err; | |
1999 | } | |
2000 | ||
6f8372b6 SH |
2001 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
2002 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 2003 | |
6f8372b6 SH |
2004 | src = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
2005 | if (cma_zero_addr(src)) { | |
2006 | dst = (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
2007 | if ((src->sa_family = dst->sa_family) == AF_INET) { | |
2008 | ((struct sockaddr_in *) src)->sin_addr.s_addr = | |
2009 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
2010 | } else { | |
2011 | ipv6_addr_copy(&((struct sockaddr_in6 *) src)->sin6_addr, | |
2012 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
2013 | } | |
e51060f0 SH |
2014 | } |
2015 | ||
2016 | work->id = id_priv; | |
c4028958 | 2017 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2018 | work->old_state = RDMA_CM_ADDR_QUERY; |
2019 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 SH |
2020 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
2021 | queue_work(cma_wq, &work->work); | |
2022 | return 0; | |
2023 | err: | |
2024 | kfree(work); | |
2025 | return ret; | |
2026 | } | |
2027 | ||
2028 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2029 | struct sockaddr *dst_addr) | |
2030 | { | |
d14714df SH |
2031 | if (!src_addr || !src_addr->sa_family) { |
2032 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
2033 | if ((src_addr->sa_family = dst_addr->sa_family) == AF_INET6) { | |
2034 | ((struct sockaddr_in6 *) src_addr)->sin6_scope_id = | |
2035 | ((struct sockaddr_in6 *) dst_addr)->sin6_scope_id; | |
2036 | } | |
2037 | } | |
2038 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
2039 | } |
2040 | ||
2041 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2042 | struct sockaddr *dst_addr, int timeout_ms) | |
2043 | { | |
2044 | struct rdma_id_private *id_priv; | |
2045 | int ret; | |
2046 | ||
2047 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2048 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 SH |
2049 | ret = cma_bind_addr(id, src_addr, dst_addr); |
2050 | if (ret) | |
2051 | return ret; | |
2052 | } | |
2053 | ||
550e5ca7 | 2054 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
2055 | return -EINVAL; |
2056 | ||
2057 | atomic_inc(&id_priv->refcount); | |
2058 | memcpy(&id->route.addr.dst_addr, dst_addr, ip_addr_size(dst_addr)); | |
2059 | if (cma_any_addr(dst_addr)) | |
2060 | ret = cma_resolve_loopback(id_priv); | |
2061 | else | |
3f446754 | 2062 | ret = rdma_resolve_ip(&addr_client, (struct sockaddr *) &id->route.addr.src_addr, |
7a118df3 | 2063 | dst_addr, &id->route.addr.dev_addr, |
e51060f0 SH |
2064 | timeout_ms, addr_handler, id_priv); |
2065 | if (ret) | |
2066 | goto err; | |
2067 | ||
2068 | return 0; | |
2069 | err: | |
550e5ca7 | 2070 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
2071 | cma_deref_id(id_priv); |
2072 | return ret; | |
2073 | } | |
2074 | EXPORT_SYMBOL(rdma_resolve_addr); | |
2075 | ||
a9bb7912 HS |
2076 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
2077 | { | |
2078 | struct rdma_id_private *id_priv; | |
2079 | unsigned long flags; | |
2080 | int ret; | |
2081 | ||
2082 | id_priv = container_of(id, struct rdma_id_private, id); | |
2083 | spin_lock_irqsave(&id_priv->lock, flags); | |
550e5ca7 | 2084 | if (id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2085 | id_priv->reuseaddr = reuse; |
2086 | ret = 0; | |
2087 | } else { | |
2088 | ret = -EINVAL; | |
2089 | } | |
2090 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2091 | return ret; | |
2092 | } | |
2093 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
2094 | ||
e51060f0 SH |
2095 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
2096 | struct rdma_id_private *id_priv) | |
2097 | { | |
2098 | struct sockaddr_in *sin; | |
2099 | ||
2100 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
2101 | sin->sin_port = htons(bind_list->port); | |
2102 | id_priv->bind_list = bind_list; | |
2103 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
2104 | } | |
2105 | ||
2106 | static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, | |
2107 | unsigned short snum) | |
2108 | { | |
2109 | struct rdma_bind_list *bind_list; | |
aedec080 | 2110 | int port, ret; |
e51060f0 | 2111 | |
cb164b8c | 2112 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
2113 | if (!bind_list) |
2114 | return -ENOMEM; | |
2115 | ||
aedec080 SH |
2116 | do { |
2117 | ret = idr_get_new_above(ps, bind_list, snum, &port); | |
2118 | } while ((ret == -EAGAIN) && idr_pre_get(ps, GFP_KERNEL)); | |
2119 | ||
2120 | if (ret) | |
2121 | goto err1; | |
2122 | ||
2123 | if (port != snum) { | |
2124 | ret = -EADDRNOTAVAIL; | |
2125 | goto err2; | |
2126 | } | |
2127 | ||
2128 | bind_list->ps = ps; | |
2129 | bind_list->port = (unsigned short) port; | |
2130 | cma_bind_port(bind_list, id_priv); | |
2131 | return 0; | |
2132 | err2: | |
2133 | idr_remove(ps, port); | |
2134 | err1: | |
2135 | kfree(bind_list); | |
2136 | return ret; | |
2137 | } | |
e51060f0 | 2138 | |
aedec080 SH |
2139 | static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv) |
2140 | { | |
5d7220e8 TH |
2141 | static unsigned int last_used_port; |
2142 | int low, high, remaining; | |
2143 | unsigned int rover; | |
e51060f0 | 2144 | |
227b60f5 | 2145 | inet_get_local_port_range(&low, &high); |
5d7220e8 TH |
2146 | remaining = (high - low) + 1; |
2147 | rover = net_random() % remaining + low; | |
2148 | retry: | |
2149 | if (last_used_port != rover && | |
2150 | !idr_find(ps, (unsigned short) rover)) { | |
2151 | int ret = cma_alloc_port(ps, id_priv, rover); | |
2152 | /* | |
2153 | * Remember previously used port number in order to avoid | |
2154 | * re-using same port immediately after it is closed. | |
2155 | */ | |
2156 | if (!ret) | |
2157 | last_used_port = rover; | |
2158 | if (ret != -EADDRNOTAVAIL) | |
2159 | return ret; | |
e51060f0 | 2160 | } |
5d7220e8 TH |
2161 | if (--remaining) { |
2162 | rover++; | |
2163 | if ((rover < low) || (rover > high)) | |
2164 | rover = low; | |
2165 | goto retry; | |
2166 | } | |
2167 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
2168 | } |
2169 | ||
a9bb7912 HS |
2170 | /* |
2171 | * Check that the requested port is available. This is called when trying to | |
2172 | * bind to a specific port, or when trying to listen on a bound port. In | |
2173 | * the latter case, the provided id_priv may already be on the bind_list, but | |
2174 | * we still need to check that it's okay to start listening. | |
2175 | */ | |
2176 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
2177 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
2178 | { |
2179 | struct rdma_id_private *cur_id; | |
43b752da | 2180 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 2181 | struct hlist_node *node; |
e51060f0 | 2182 | |
43b752da | 2183 | addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
a9bb7912 | 2184 | if (cma_any_addr(addr) && !reuseaddr) |
e51060f0 SH |
2185 | return -EADDRNOTAVAIL; |
2186 | ||
2187 | hlist_for_each_entry(cur_id, node, &bind_list->owners, node) { | |
a9bb7912 HS |
2188 | if (id_priv == cur_id) |
2189 | continue; | |
3cd96564 | 2190 | |
550e5ca7 | 2191 | if ((cur_id->state == RDMA_CM_LISTEN) || |
a9bb7912 HS |
2192 | !reuseaddr || !cur_id->reuseaddr) { |
2193 | cur_addr = (struct sockaddr *) &cur_id->id.route.addr.src_addr; | |
2194 | if (cma_any_addr(cur_addr)) | |
2195 | return -EADDRNOTAVAIL; | |
e51060f0 | 2196 | |
a9bb7912 HS |
2197 | if (!cma_addr_cmp(addr, cur_addr)) |
2198 | return -EADDRINUSE; | |
2199 | } | |
2200 | } | |
e51060f0 SH |
2201 | return 0; |
2202 | } | |
2203 | ||
a9bb7912 HS |
2204 | static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv) |
2205 | { | |
2206 | struct rdma_bind_list *bind_list; | |
2207 | unsigned short snum; | |
2208 | int ret; | |
2209 | ||
2210 | snum = ntohs(cma_port((struct sockaddr *) &id_priv->id.route.addr.src_addr)); | |
2211 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
2212 | return -EACCES; | |
2213 | ||
2214 | bind_list = idr_find(ps, snum); | |
2215 | if (!bind_list) { | |
2216 | ret = cma_alloc_port(ps, id_priv, snum); | |
2217 | } else { | |
2218 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
2219 | if (!ret) | |
2220 | cma_bind_port(bind_list, id_priv); | |
2221 | } | |
2222 | return ret; | |
2223 | } | |
2224 | ||
2225 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
2226 | { | |
2227 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
2228 | int ret = 0; | |
2229 | ||
2230 | mutex_lock(&lock); | |
2231 | if (bind_list->owners.first->next) | |
2232 | ret = cma_check_port(bind_list, id_priv, 0); | |
2233 | mutex_unlock(&lock); | |
2234 | return ret; | |
2235 | } | |
2236 | ||
e51060f0 SH |
2237 | static int cma_get_port(struct rdma_id_private *id_priv) |
2238 | { | |
2239 | struct idr *ps; | |
2240 | int ret; | |
2241 | ||
2242 | switch (id_priv->id.ps) { | |
2243 | case RDMA_PS_SDP: | |
2244 | ps = &sdp_ps; | |
2245 | break; | |
2246 | case RDMA_PS_TCP: | |
2247 | ps = &tcp_ps; | |
2248 | break; | |
628e5f6d SH |
2249 | case RDMA_PS_UDP: |
2250 | ps = &udp_ps; | |
2251 | break; | |
c8f6a362 SH |
2252 | case RDMA_PS_IPOIB: |
2253 | ps = &ipoib_ps; | |
2254 | break; | |
2d2e9415 SH |
2255 | case RDMA_PS_IB: |
2256 | ps = &ib_ps; | |
2257 | break; | |
e51060f0 SH |
2258 | default: |
2259 | return -EPROTONOSUPPORT; | |
2260 | } | |
2261 | ||
2262 | mutex_lock(&lock); | |
3f446754 | 2263 | if (cma_any_port((struct sockaddr *) &id_priv->id.route.addr.src_addr)) |
aedec080 | 2264 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2265 | else |
2266 | ret = cma_use_port(ps, id_priv); | |
2267 | mutex_unlock(&lock); | |
2268 | ||
2269 | return ret; | |
2270 | } | |
2271 | ||
d14714df SH |
2272 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
2273 | struct sockaddr *addr) | |
2274 | { | |
fd4582a3 | 2275 | #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) |
d14714df SH |
2276 | struct sockaddr_in6 *sin6; |
2277 | ||
2278 | if (addr->sa_family != AF_INET6) | |
2279 | return 0; | |
2280 | ||
2281 | sin6 = (struct sockaddr_in6 *) addr; | |
2282 | if ((ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) && | |
2283 | !sin6->sin6_scope_id) | |
2284 | return -EINVAL; | |
2285 | ||
2286 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
2287 | #endif | |
2288 | return 0; | |
2289 | } | |
2290 | ||
a9bb7912 HS |
2291 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
2292 | { | |
2293 | struct rdma_id_private *id_priv; | |
2294 | int ret; | |
2295 | ||
2296 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2297 | if (id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2298 | ((struct sockaddr *) &id->route.addr.src_addr)->sa_family = AF_INET; |
2299 | ret = rdma_bind_addr(id, (struct sockaddr *) &id->route.addr.src_addr); | |
2300 | if (ret) | |
2301 | return ret; | |
2302 | } | |
2303 | ||
550e5ca7 | 2304 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
2305 | return -EINVAL; |
2306 | ||
2307 | if (id_priv->reuseaddr) { | |
2308 | ret = cma_bind_listen(id_priv); | |
2309 | if (ret) | |
2310 | goto err; | |
2311 | } | |
2312 | ||
2313 | id_priv->backlog = backlog; | |
2314 | if (id->device) { | |
2315 | switch (rdma_node_get_transport(id->device->node_type)) { | |
2316 | case RDMA_TRANSPORT_IB: | |
2317 | ret = cma_ib_listen(id_priv); | |
2318 | if (ret) | |
2319 | goto err; | |
2320 | break; | |
2321 | case RDMA_TRANSPORT_IWARP: | |
2322 | ret = cma_iw_listen(id_priv, backlog); | |
2323 | if (ret) | |
2324 | goto err; | |
2325 | break; | |
2326 | default: | |
2327 | ret = -ENOSYS; | |
2328 | goto err; | |
2329 | } | |
2330 | } else | |
2331 | cma_listen_on_all(id_priv); | |
2332 | ||
2333 | return 0; | |
2334 | err: | |
2335 | id_priv->backlog = 0; | |
550e5ca7 | 2336 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
2337 | return ret; |
2338 | } | |
2339 | EXPORT_SYMBOL(rdma_listen); | |
2340 | ||
e51060f0 SH |
2341 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
2342 | { | |
2343 | struct rdma_id_private *id_priv; | |
2344 | int ret; | |
2345 | ||
1f5175ad | 2346 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6) |
e51060f0 SH |
2347 | return -EAFNOSUPPORT; |
2348 | ||
2349 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2350 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
2351 | return -EINVAL; |
2352 | ||
d14714df SH |
2353 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
2354 | if (ret) | |
2355 | goto err1; | |
2356 | ||
8523c048 | 2357 | if (!cma_any_addr(addr)) { |
e51060f0 | 2358 | ret = rdma_translate_ip(addr, &id->route.addr.dev_addr); |
e51060f0 | 2359 | if (ret) |
255d0c14 KK |
2360 | goto err1; |
2361 | ||
255d0c14 | 2362 | ret = cma_acquire_dev(id_priv); |
255d0c14 KK |
2363 | if (ret) |
2364 | goto err1; | |
e51060f0 SH |
2365 | } |
2366 | ||
2367 | memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr)); | |
2368 | ret = cma_get_port(id_priv); | |
2369 | if (ret) | |
255d0c14 | 2370 | goto err2; |
e51060f0 SH |
2371 | |
2372 | return 0; | |
255d0c14 | 2373 | err2: |
a396d43a SH |
2374 | if (id_priv->cma_dev) |
2375 | cma_release_dev(id_priv); | |
255d0c14 | 2376 | err1: |
550e5ca7 | 2377 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
2378 | return ret; |
2379 | } | |
2380 | EXPORT_SYMBOL(rdma_bind_addr); | |
2381 | ||
2382 | static int cma_format_hdr(void *hdr, enum rdma_port_space ps, | |
2383 | struct rdma_route *route) | |
2384 | { | |
e51060f0 SH |
2385 | struct cma_hdr *cma_hdr; |
2386 | struct sdp_hh *sdp_hdr; | |
2387 | ||
1f5175ad AS |
2388 | if (route->addr.src_addr.ss_family == AF_INET) { |
2389 | struct sockaddr_in *src4, *dst4; | |
2390 | ||
2391 | src4 = (struct sockaddr_in *) &route->addr.src_addr; | |
2392 | dst4 = (struct sockaddr_in *) &route->addr.dst_addr; | |
2393 | ||
2394 | switch (ps) { | |
2395 | case RDMA_PS_SDP: | |
2396 | sdp_hdr = hdr; | |
2397 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2398 | return -EINVAL; | |
2399 | sdp_set_ip_ver(sdp_hdr, 4); | |
2400 | sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2401 | sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2402 | sdp_hdr->port = src4->sin_port; | |
2403 | break; | |
2404 | default: | |
2405 | cma_hdr = hdr; | |
2406 | cma_hdr->cma_version = CMA_VERSION; | |
2407 | cma_set_ip_ver(cma_hdr, 4); | |
2408 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2409 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2410 | cma_hdr->port = src4->sin_port; | |
2411 | break; | |
2412 | } | |
2413 | } else { | |
2414 | struct sockaddr_in6 *src6, *dst6; | |
2415 | ||
2416 | src6 = (struct sockaddr_in6 *) &route->addr.src_addr; | |
2417 | dst6 = (struct sockaddr_in6 *) &route->addr.dst_addr; | |
2418 | ||
2419 | switch (ps) { | |
2420 | case RDMA_PS_SDP: | |
2421 | sdp_hdr = hdr; | |
2422 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2423 | return -EINVAL; | |
2424 | sdp_set_ip_ver(sdp_hdr, 6); | |
2425 | sdp_hdr->src_addr.ip6 = src6->sin6_addr; | |
2426 | sdp_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2427 | sdp_hdr->port = src6->sin6_port; | |
2428 | break; | |
2429 | default: | |
2430 | cma_hdr = hdr; | |
2431 | cma_hdr->cma_version = CMA_VERSION; | |
2432 | cma_set_ip_ver(cma_hdr, 6); | |
2433 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
2434 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2435 | cma_hdr->port = src6->sin6_port; | |
2436 | break; | |
2437 | } | |
e51060f0 SH |
2438 | } |
2439 | return 0; | |
2440 | } | |
2441 | ||
628e5f6d SH |
2442 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
2443 | struct ib_cm_event *ib_event) | |
2444 | { | |
2445 | struct rdma_id_private *id_priv = cm_id->context; | |
2446 | struct rdma_cm_event event; | |
2447 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
2448 | int ret = 0; | |
2449 | ||
550e5ca7 | 2450 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
8aa08602 | 2451 | return 0; |
628e5f6d | 2452 | |
8aa08602 | 2453 | memset(&event, 0, sizeof event); |
628e5f6d SH |
2454 | switch (ib_event->event) { |
2455 | case IB_CM_SIDR_REQ_ERROR: | |
2456 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2457 | event.status = -ETIMEDOUT; | |
2458 | break; | |
2459 | case IB_CM_SIDR_REP_RECEIVED: | |
2460 | event.param.ud.private_data = ib_event->private_data; | |
2461 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
2462 | if (rep->status != IB_SIDR_SUCCESS) { | |
2463 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2464 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
2465 | break; | |
2466 | } | |
d2ca39f2 YE |
2467 | ret = cma_set_qkey(id_priv); |
2468 | if (ret) { | |
2469 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
2470 | event.status = -EINVAL; | |
2471 | break; | |
2472 | } | |
c8f6a362 | 2473 | if (id_priv->qkey != rep->qkey) { |
628e5f6d SH |
2474 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
2475 | event.status = -EINVAL; | |
2476 | break; | |
2477 | } | |
2478 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
2479 | id_priv->id.route.path_rec, | |
2480 | &event.param.ud.ah_attr); | |
2481 | event.param.ud.qp_num = rep->qpn; | |
2482 | event.param.ud.qkey = rep->qkey; | |
2483 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
2484 | event.status = 0; | |
2485 | break; | |
2486 | default: | |
468f2239 | 2487 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
2488 | ib_event->event); |
2489 | goto out; | |
2490 | } | |
2491 | ||
2492 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2493 | if (ret) { | |
2494 | /* Destroy the CM ID by returning a non-zero value. */ | |
2495 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 2496 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2497 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2498 | rdma_destroy_id(&id_priv->id); |
2499 | return ret; | |
2500 | } | |
2501 | out: | |
de910bd9 | 2502 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2503 | return ret; |
2504 | } | |
2505 | ||
2506 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
2507 | struct rdma_conn_param *conn_param) | |
2508 | { | |
2509 | struct ib_cm_sidr_req_param req; | |
2510 | struct rdma_route *route; | |
0c9361fc | 2511 | struct ib_cm_id *id; |
628e5f6d SH |
2512 | int ret; |
2513 | ||
2514 | req.private_data_len = sizeof(struct cma_hdr) + | |
2515 | conn_param->private_data_len; | |
2516 | req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2517 | if (!req.private_data) | |
2518 | return -ENOMEM; | |
2519 | ||
2520 | if (conn_param->private_data && conn_param->private_data_len) | |
2521 | memcpy((void *) req.private_data + sizeof(struct cma_hdr), | |
2522 | conn_param->private_data, conn_param->private_data_len); | |
2523 | ||
2524 | route = &id_priv->id.route; | |
2525 | ret = cma_format_hdr((void *) req.private_data, id_priv->id.ps, route); | |
2526 | if (ret) | |
2527 | goto out; | |
2528 | ||
0c9361fc JM |
2529 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
2530 | id_priv); | |
2531 | if (IS_ERR(id)) { | |
2532 | ret = PTR_ERR(id); | |
628e5f6d SH |
2533 | goto out; |
2534 | } | |
0c9361fc | 2535 | id_priv->cm_id.ib = id; |
628e5f6d SH |
2536 | |
2537 | req.path = route->path_rec; | |
2538 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2539 | (struct sockaddr *) &route->addr.dst_addr); |
628e5f6d SH |
2540 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
2541 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2542 | ||
2543 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
2544 | if (ret) { | |
2545 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2546 | id_priv->cm_id.ib = NULL; | |
2547 | } | |
2548 | out: | |
2549 | kfree(req.private_data); | |
2550 | return ret; | |
2551 | } | |
2552 | ||
e51060f0 SH |
2553 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
2554 | struct rdma_conn_param *conn_param) | |
2555 | { | |
2556 | struct ib_cm_req_param req; | |
2557 | struct rdma_route *route; | |
2558 | void *private_data; | |
0c9361fc | 2559 | struct ib_cm_id *id; |
e51060f0 SH |
2560 | int offset, ret; |
2561 | ||
2562 | memset(&req, 0, sizeof req); | |
2563 | offset = cma_user_data_offset(id_priv->id.ps); | |
2564 | req.private_data_len = offset + conn_param->private_data_len; | |
2565 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
2566 | if (!private_data) | |
2567 | return -ENOMEM; | |
2568 | ||
2569 | if (conn_param->private_data && conn_param->private_data_len) | |
2570 | memcpy(private_data + offset, conn_param->private_data, | |
2571 | conn_param->private_data_len); | |
2572 | ||
0c9361fc JM |
2573 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
2574 | if (IS_ERR(id)) { | |
2575 | ret = PTR_ERR(id); | |
e51060f0 SH |
2576 | goto out; |
2577 | } | |
0c9361fc | 2578 | id_priv->cm_id.ib = id; |
e51060f0 SH |
2579 | |
2580 | route = &id_priv->id.route; | |
2581 | ret = cma_format_hdr(private_data, id_priv->id.ps, route); | |
2582 | if (ret) | |
2583 | goto out; | |
2584 | req.private_data = private_data; | |
2585 | ||
2586 | req.primary_path = &route->path_rec[0]; | |
2587 | if (route->num_paths == 2) | |
2588 | req.alternate_path = &route->path_rec[1]; | |
2589 | ||
2590 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2591 | (struct sockaddr *) &route->addr.dst_addr); |
e51060f0 | 2592 | req.qp_num = id_priv->qp_num; |
18c441a6 | 2593 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
2594 | req.starting_psn = id_priv->seq_num; |
2595 | req.responder_resources = conn_param->responder_resources; | |
2596 | req.initiator_depth = conn_param->initiator_depth; | |
2597 | req.flow_control = conn_param->flow_control; | |
2598 | req.retry_count = conn_param->retry_count; | |
2599 | req.rnr_retry_count = conn_param->rnr_retry_count; | |
2600 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2601 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2602 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2603 | req.srq = id_priv->srq ? 1 : 0; | |
2604 | ||
2605 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
2606 | out: | |
0c9361fc JM |
2607 | if (ret && !IS_ERR(id)) { |
2608 | ib_destroy_cm_id(id); | |
675a027c KK |
2609 | id_priv->cm_id.ib = NULL; |
2610 | } | |
2611 | ||
e51060f0 SH |
2612 | kfree(private_data); |
2613 | return ret; | |
2614 | } | |
2615 | ||
07ebafba TT |
2616 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
2617 | struct rdma_conn_param *conn_param) | |
2618 | { | |
2619 | struct iw_cm_id *cm_id; | |
2620 | struct sockaddr_in* sin; | |
2621 | int ret; | |
2622 | struct iw_cm_conn_param iw_param; | |
2623 | ||
2624 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
2625 | if (IS_ERR(cm_id)) |
2626 | return PTR_ERR(cm_id); | |
07ebafba TT |
2627 | |
2628 | id_priv->cm_id.iw = cm_id; | |
2629 | ||
2630 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.src_addr; | |
2631 | cm_id->local_addr = *sin; | |
2632 | ||
2633 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.dst_addr; | |
2634 | cm_id->remote_addr = *sin; | |
2635 | ||
5851bb89 | 2636 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
2637 | if (ret) |
2638 | goto out; | |
07ebafba | 2639 | |
f45ee80e HS |
2640 | if (conn_param) { |
2641 | iw_param.ord = conn_param->initiator_depth; | |
2642 | iw_param.ird = conn_param->responder_resources; | |
2643 | iw_param.private_data = conn_param->private_data; | |
2644 | iw_param.private_data_len = conn_param->private_data_len; | |
2645 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
2646 | } else { | |
2647 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 2648 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 2649 | } |
07ebafba TT |
2650 | ret = iw_cm_connect(cm_id, &iw_param); |
2651 | out: | |
0c9361fc | 2652 | if (ret) { |
675a027c KK |
2653 | iw_destroy_cm_id(cm_id); |
2654 | id_priv->cm_id.iw = NULL; | |
2655 | } | |
07ebafba TT |
2656 | return ret; |
2657 | } | |
2658 | ||
e51060f0 SH |
2659 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2660 | { | |
2661 | struct rdma_id_private *id_priv; | |
2662 | int ret; | |
2663 | ||
2664 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2665 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
2666 | return -EINVAL; |
2667 | ||
2668 | if (!id->qp) { | |
2669 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2670 | id_priv->srq = conn_param->srq; |
2671 | } | |
2672 | ||
07ebafba TT |
2673 | switch (rdma_node_get_transport(id->device->node_type)) { |
2674 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 2675 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
2676 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
2677 | else | |
2678 | ret = cma_connect_ib(id_priv, conn_param); | |
e51060f0 | 2679 | break; |
07ebafba TT |
2680 | case RDMA_TRANSPORT_IWARP: |
2681 | ret = cma_connect_iw(id_priv, conn_param); | |
2682 | break; | |
e51060f0 SH |
2683 | default: |
2684 | ret = -ENOSYS; | |
2685 | break; | |
2686 | } | |
2687 | if (ret) | |
2688 | goto err; | |
2689 | ||
2690 | return 0; | |
2691 | err: | |
550e5ca7 | 2692 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
2693 | return ret; |
2694 | } | |
2695 | EXPORT_SYMBOL(rdma_connect); | |
2696 | ||
2697 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
2698 | struct rdma_conn_param *conn_param) | |
2699 | { | |
2700 | struct ib_cm_rep_param rep; | |
5851bb89 | 2701 | int ret; |
0fe313b0 | 2702 | |
5851bb89 SH |
2703 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
2704 | if (ret) | |
2705 | goto out; | |
0fe313b0 | 2706 | |
5851bb89 SH |
2707 | ret = cma_modify_qp_rts(id_priv, conn_param); |
2708 | if (ret) | |
2709 | goto out; | |
e51060f0 SH |
2710 | |
2711 | memset(&rep, 0, sizeof rep); | |
2712 | rep.qp_num = id_priv->qp_num; | |
2713 | rep.starting_psn = id_priv->seq_num; | |
2714 | rep.private_data = conn_param->private_data; | |
2715 | rep.private_data_len = conn_param->private_data_len; | |
2716 | rep.responder_resources = conn_param->responder_resources; | |
2717 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
2718 | rep.failover_accepted = 0; |
2719 | rep.flow_control = conn_param->flow_control; | |
2720 | rep.rnr_retry_count = conn_param->rnr_retry_count; | |
2721 | rep.srq = id_priv->srq ? 1 : 0; | |
2722 | ||
0fe313b0 SH |
2723 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
2724 | out: | |
2725 | return ret; | |
e51060f0 SH |
2726 | } |
2727 | ||
07ebafba TT |
2728 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
2729 | struct rdma_conn_param *conn_param) | |
2730 | { | |
2731 | struct iw_cm_conn_param iw_param; | |
2732 | int ret; | |
2733 | ||
5851bb89 | 2734 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
2735 | if (ret) |
2736 | return ret; | |
2737 | ||
2738 | iw_param.ord = conn_param->initiator_depth; | |
2739 | iw_param.ird = conn_param->responder_resources; | |
2740 | iw_param.private_data = conn_param->private_data; | |
2741 | iw_param.private_data_len = conn_param->private_data_len; | |
2742 | if (id_priv->id.qp) { | |
2743 | iw_param.qpn = id_priv->qp_num; | |
2744 | } else | |
2745 | iw_param.qpn = conn_param->qp_num; | |
2746 | ||
2747 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
2748 | } | |
2749 | ||
628e5f6d SH |
2750 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
2751 | enum ib_cm_sidr_status status, | |
2752 | const void *private_data, int private_data_len) | |
2753 | { | |
2754 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 2755 | int ret; |
628e5f6d SH |
2756 | |
2757 | memset(&rep, 0, sizeof rep); | |
2758 | rep.status = status; | |
2759 | if (status == IB_SIDR_SUCCESS) { | |
d2ca39f2 YE |
2760 | ret = cma_set_qkey(id_priv); |
2761 | if (ret) | |
2762 | return ret; | |
628e5f6d | 2763 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 2764 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
2765 | } |
2766 | rep.private_data = private_data; | |
2767 | rep.private_data_len = private_data_len; | |
2768 | ||
2769 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
2770 | } | |
2771 | ||
e51060f0 SH |
2772 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2773 | { | |
2774 | struct rdma_id_private *id_priv; | |
2775 | int ret; | |
2776 | ||
2777 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d NM |
2778 | |
2779 | id_priv->owner = task_pid_nr(current); | |
2780 | ||
550e5ca7 | 2781 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
2782 | return -EINVAL; |
2783 | ||
2784 | if (!id->qp && conn_param) { | |
2785 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2786 | id_priv->srq = conn_param->srq; |
2787 | } | |
2788 | ||
07ebafba TT |
2789 | switch (rdma_node_get_transport(id->device->node_type)) { |
2790 | case RDMA_TRANSPORT_IB: | |
f45ee80e HS |
2791 | if (id->qp_type == IB_QPT_UD) { |
2792 | if (conn_param) | |
2793 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
2794 | conn_param->private_data, | |
2795 | conn_param->private_data_len); | |
2796 | else | |
2797 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
2798 | NULL, 0); | |
2799 | } else { | |
2800 | if (conn_param) | |
2801 | ret = cma_accept_ib(id_priv, conn_param); | |
2802 | else | |
2803 | ret = cma_rep_recv(id_priv); | |
2804 | } | |
e51060f0 | 2805 | break; |
07ebafba TT |
2806 | case RDMA_TRANSPORT_IWARP: |
2807 | ret = cma_accept_iw(id_priv, conn_param); | |
2808 | break; | |
e51060f0 SH |
2809 | default: |
2810 | ret = -ENOSYS; | |
2811 | break; | |
2812 | } | |
2813 | ||
2814 | if (ret) | |
2815 | goto reject; | |
2816 | ||
2817 | return 0; | |
2818 | reject: | |
c5483388 | 2819 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
2820 | rdma_reject(id, NULL, 0); |
2821 | return ret; | |
2822 | } | |
2823 | EXPORT_SYMBOL(rdma_accept); | |
2824 | ||
0fe313b0 SH |
2825 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
2826 | { | |
2827 | struct rdma_id_private *id_priv; | |
2828 | int ret; | |
2829 | ||
2830 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2831 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
2832 | return -EINVAL; |
2833 | ||
2834 | switch (id->device->node_type) { | |
2835 | case RDMA_NODE_IB_CA: | |
2836 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
2837 | break; | |
2838 | default: | |
2839 | ret = 0; | |
2840 | break; | |
2841 | } | |
2842 | return ret; | |
2843 | } | |
2844 | EXPORT_SYMBOL(rdma_notify); | |
2845 | ||
e51060f0 SH |
2846 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
2847 | u8 private_data_len) | |
2848 | { | |
2849 | struct rdma_id_private *id_priv; | |
2850 | int ret; | |
2851 | ||
2852 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2853 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
2854 | return -EINVAL; |
2855 | ||
07ebafba TT |
2856 | switch (rdma_node_get_transport(id->device->node_type)) { |
2857 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 2858 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
2859 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, |
2860 | private_data, private_data_len); | |
2861 | else | |
2862 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
2863 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
2864 | 0, private_data, private_data_len); | |
e51060f0 | 2865 | break; |
07ebafba TT |
2866 | case RDMA_TRANSPORT_IWARP: |
2867 | ret = iw_cm_reject(id_priv->cm_id.iw, | |
2868 | private_data, private_data_len); | |
2869 | break; | |
e51060f0 SH |
2870 | default: |
2871 | ret = -ENOSYS; | |
2872 | break; | |
2873 | } | |
2874 | return ret; | |
2875 | } | |
2876 | EXPORT_SYMBOL(rdma_reject); | |
2877 | ||
2878 | int rdma_disconnect(struct rdma_cm_id *id) | |
2879 | { | |
2880 | struct rdma_id_private *id_priv; | |
2881 | int ret; | |
2882 | ||
2883 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2884 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
2885 | return -EINVAL; |
2886 | ||
07ebafba TT |
2887 | switch (rdma_node_get_transport(id->device->node_type)) { |
2888 | case RDMA_TRANSPORT_IB: | |
c5483388 | 2889 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
2890 | if (ret) |
2891 | goto out; | |
e51060f0 SH |
2892 | /* Initiate or respond to a disconnect. */ |
2893 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
2894 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
2895 | break; | |
07ebafba TT |
2896 | case RDMA_TRANSPORT_IWARP: |
2897 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); | |
2898 | break; | |
e51060f0 | 2899 | default: |
07ebafba | 2900 | ret = -EINVAL; |
e51060f0 SH |
2901 | break; |
2902 | } | |
2903 | out: | |
2904 | return ret; | |
2905 | } | |
2906 | EXPORT_SYMBOL(rdma_disconnect); | |
2907 | ||
c8f6a362 SH |
2908 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
2909 | { | |
2910 | struct rdma_id_private *id_priv; | |
2911 | struct cma_multicast *mc = multicast->context; | |
2912 | struct rdma_cm_event event; | |
2913 | int ret; | |
2914 | ||
2915 | id_priv = mc->id_priv; | |
550e5ca7 NM |
2916 | if (cma_disable_callback(id_priv, RDMA_CM_ADDR_BOUND) && |
2917 | cma_disable_callback(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
8aa08602 | 2918 | return 0; |
c8f6a362 | 2919 | |
c5483388 | 2920 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
2921 | if (!status && id_priv->id.qp) |
2922 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
2923 | multicast->rec.mlid); | |
c5483388 | 2924 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
2925 | |
2926 | memset(&event, 0, sizeof event); | |
2927 | event.status = status; | |
2928 | event.param.ud.private_data = mc->context; | |
2929 | if (!status) { | |
2930 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
2931 | ib_init_ah_from_mcmember(id_priv->id.device, | |
2932 | id_priv->id.port_num, &multicast->rec, | |
2933 | &event.param.ud.ah_attr); | |
2934 | event.param.ud.qp_num = 0xFFFFFF; | |
2935 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
2936 | } else | |
2937 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
2938 | ||
2939 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2940 | if (ret) { | |
550e5ca7 | 2941 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2942 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2943 | rdma_destroy_id(&id_priv->id); |
2944 | return 0; | |
2945 | } | |
8aa08602 | 2946 | |
de910bd9 | 2947 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2948 | return 0; |
2949 | } | |
2950 | ||
2951 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
2952 | struct sockaddr *addr, union ib_gid *mgid) | |
2953 | { | |
2954 | unsigned char mc_map[MAX_ADDR_LEN]; | |
2955 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2956 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
2957 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
2958 | ||
2959 | if (cma_any_addr(addr)) { | |
2960 | memset(mgid, 0, sizeof *mgid); | |
2961 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 2962 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
2963 | 0xFF10A01B)) { |
2964 | /* IPv6 address is an SA assigned MGID. */ | |
2965 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
e2e62697 JG |
2966 | } else if ((addr->sa_family == AF_INET6)) { |
2967 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
2968 | if (id_priv->id.ps == RDMA_PS_UDP) | |
2969 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
2970 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 2971 | } else { |
a9e527e3 | 2972 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
2973 | if (id_priv->id.ps == RDMA_PS_UDP) |
2974 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
2975 | *mgid = *(union ib_gid *) (mc_map + 4); |
2976 | } | |
2977 | } | |
2978 | ||
2979 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
2980 | struct cma_multicast *mc) | |
2981 | { | |
2982 | struct ib_sa_mcmember_rec rec; | |
2983 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2984 | ib_sa_comp_mask comp_mask; | |
2985 | int ret; | |
2986 | ||
2987 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
2988 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
2989 | &rec.mgid, &rec); | |
2990 | if (ret) | |
2991 | return ret; | |
2992 | ||
3f446754 | 2993 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
c8f6a362 SH |
2994 | if (id_priv->id.ps == RDMA_PS_UDP) |
2995 | rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
6f8372b6 | 2996 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 SH |
2997 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
2998 | rec.join_state = 1; | |
2999 | ||
3000 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
3001 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
3002 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
3003 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
3004 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
3005 | ||
84adeee9 YE |
3006 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
3007 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
3008 | IB_SA_MCMEMBER_REC_RATE_SELECTOR; | |
3009 | ||
c8f6a362 SH |
3010 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
3011 | id_priv->id.port_num, &rec, | |
3012 | comp_mask, GFP_KERNEL, | |
3013 | cma_ib_mc_handler, mc); | |
3014 | if (IS_ERR(mc->multicast.ib)) | |
3015 | return PTR_ERR(mc->multicast.ib); | |
3016 | ||
3017 | return 0; | |
3018 | } | |
3019 | ||
3c86aa70 EC |
3020 | static void iboe_mcast_work_handler(struct work_struct *work) |
3021 | { | |
3022 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
3023 | struct cma_multicast *mc = mw->mc; | |
3024 | struct ib_sa_multicast *m = mc->multicast.ib; | |
3025 | ||
3026 | mc->multicast.ib->context = mc; | |
3027 | cma_ib_mc_handler(0, m); | |
3028 | kref_put(&mc->mcref, release_mc); | |
3029 | kfree(mw); | |
3030 | } | |
3031 | ||
3032 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) | |
3033 | { | |
3034 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
3035 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
3036 | ||
3037 | if (cma_any_addr(addr)) { | |
3038 | memset(mgid, 0, sizeof *mgid); | |
3039 | } else if (addr->sa_family == AF_INET6) { | |
3040 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
3041 | } else { | |
3042 | mgid->raw[0] = 0xff; | |
3043 | mgid->raw[1] = 0x0e; | |
3044 | mgid->raw[2] = 0; | |
3045 | mgid->raw[3] = 0; | |
3046 | mgid->raw[4] = 0; | |
3047 | mgid->raw[5] = 0; | |
3048 | mgid->raw[6] = 0; | |
3049 | mgid->raw[7] = 0; | |
3050 | mgid->raw[8] = 0; | |
3051 | mgid->raw[9] = 0; | |
3052 | mgid->raw[10] = 0xff; | |
3053 | mgid->raw[11] = 0xff; | |
3054 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
3055 | } | |
3056 | } | |
3057 | ||
3058 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
3059 | struct cma_multicast *mc) | |
3060 | { | |
3061 | struct iboe_mcast_work *work; | |
3062 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3063 | int err; | |
3064 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; | |
3065 | struct net_device *ndev = NULL; | |
3066 | ||
3067 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
3068 | return -EINVAL; | |
3069 | ||
3070 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3071 | if (!work) | |
3072 | return -ENOMEM; | |
3073 | ||
3074 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
3075 | if (!mc->multicast.ib) { | |
3076 | err = -ENOMEM; | |
3077 | goto out1; | |
3078 | } | |
3079 | ||
3080 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); | |
3081 | ||
3082 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
3083 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3084 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
3085 | ||
3086 | if (dev_addr->bound_dev_if) | |
3087 | ndev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3088 | if (!ndev) { | |
3089 | err = -ENODEV; | |
3090 | goto out2; | |
3091 | } | |
3092 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
3093 | mc->multicast.ib->rec.hop_limit = 1; | |
3094 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
3095 | dev_put(ndev); | |
3096 | if (!mc->multicast.ib->rec.mtu) { | |
3097 | err = -EINVAL; | |
3098 | goto out2; | |
3099 | } | |
3100 | iboe_addr_get_sgid(dev_addr, &mc->multicast.ib->rec.port_gid); | |
3101 | work->id = id_priv; | |
3102 | work->mc = mc; | |
3103 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
3104 | kref_get(&mc->mcref); | |
3105 | queue_work(cma_wq, &work->work); | |
3106 | ||
3107 | return 0; | |
3108 | ||
3109 | out2: | |
3110 | kfree(mc->multicast.ib); | |
3111 | out1: | |
3112 | kfree(work); | |
3113 | return err; | |
3114 | } | |
3115 | ||
c8f6a362 SH |
3116 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
3117 | void *context) | |
3118 | { | |
3119 | struct rdma_id_private *id_priv; | |
3120 | struct cma_multicast *mc; | |
3121 | int ret; | |
3122 | ||
3123 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
3124 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
3125 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
3126 | return -EINVAL; |
3127 | ||
3128 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
3129 | if (!mc) | |
3130 | return -ENOMEM; | |
3131 | ||
3132 | memcpy(&mc->addr, addr, ip_addr_size(addr)); | |
3133 | mc->context = context; | |
3134 | mc->id_priv = id_priv; | |
3135 | ||
3136 | spin_lock(&id_priv->lock); | |
3137 | list_add(&mc->list, &id_priv->mc_list); | |
3138 | spin_unlock(&id_priv->lock); | |
3139 | ||
3140 | switch (rdma_node_get_transport(id->device->node_type)) { | |
3141 | case RDMA_TRANSPORT_IB: | |
3c86aa70 EC |
3142 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { |
3143 | case IB_LINK_LAYER_INFINIBAND: | |
3144 | ret = cma_join_ib_multicast(id_priv, mc); | |
3145 | break; | |
3146 | case IB_LINK_LAYER_ETHERNET: | |
3147 | kref_init(&mc->mcref); | |
3148 | ret = cma_iboe_join_multicast(id_priv, mc); | |
3149 | break; | |
3150 | default: | |
3151 | ret = -EINVAL; | |
3152 | } | |
c8f6a362 SH |
3153 | break; |
3154 | default: | |
3155 | ret = -ENOSYS; | |
3156 | break; | |
3157 | } | |
3158 | ||
3159 | if (ret) { | |
3160 | spin_lock_irq(&id_priv->lock); | |
3161 | list_del(&mc->list); | |
3162 | spin_unlock_irq(&id_priv->lock); | |
3163 | kfree(mc); | |
3164 | } | |
3165 | return ret; | |
3166 | } | |
3167 | EXPORT_SYMBOL(rdma_join_multicast); | |
3168 | ||
3169 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
3170 | { | |
3171 | struct rdma_id_private *id_priv; | |
3172 | struct cma_multicast *mc; | |
3173 | ||
3174 | id_priv = container_of(id, struct rdma_id_private, id); | |
3175 | spin_lock_irq(&id_priv->lock); | |
3176 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
3177 | if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) { | |
3178 | list_del(&mc->list); | |
3179 | spin_unlock_irq(&id_priv->lock); | |
3180 | ||
3181 | if (id->qp) | |
3182 | ib_detach_mcast(id->qp, | |
3183 | &mc->multicast.ib->rec.mgid, | |
3184 | mc->multicast.ib->rec.mlid); | |
3c86aa70 EC |
3185 | if (rdma_node_get_transport(id_priv->cma_dev->device->node_type) == RDMA_TRANSPORT_IB) { |
3186 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { | |
3187 | case IB_LINK_LAYER_INFINIBAND: | |
3188 | ib_sa_free_multicast(mc->multicast.ib); | |
3189 | kfree(mc); | |
3190 | break; | |
3191 | case IB_LINK_LAYER_ETHERNET: | |
3192 | kref_put(&mc->mcref, release_mc); | |
3193 | break; | |
3194 | default: | |
3195 | break; | |
3196 | } | |
3197 | } | |
c8f6a362 SH |
3198 | return; |
3199 | } | |
3200 | } | |
3201 | spin_unlock_irq(&id_priv->lock); | |
3202 | } | |
3203 | EXPORT_SYMBOL(rdma_leave_multicast); | |
3204 | ||
dd5bdff8 OG |
3205 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
3206 | { | |
3207 | struct rdma_dev_addr *dev_addr; | |
3208 | struct cma_ndev_work *work; | |
3209 | ||
3210 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
3211 | ||
6266ed6e | 3212 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
dd5bdff8 OG |
3213 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
3214 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
3215 | ndev->name, &id_priv->id); | |
3216 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3217 | if (!work) | |
3218 | return -ENOMEM; | |
3219 | ||
3220 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
3221 | work->id = id_priv; | |
3222 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
3223 | atomic_inc(&id_priv->refcount); | |
3224 | queue_work(cma_wq, &work->work); | |
3225 | } | |
3226 | ||
3227 | return 0; | |
3228 | } | |
3229 | ||
3230 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
3231 | void *ctx) | |
3232 | { | |
3233 | struct net_device *ndev = (struct net_device *)ctx; | |
3234 | struct cma_device *cma_dev; | |
3235 | struct rdma_id_private *id_priv; | |
3236 | int ret = NOTIFY_DONE; | |
3237 | ||
3238 | if (dev_net(ndev) != &init_net) | |
3239 | return NOTIFY_DONE; | |
3240 | ||
3241 | if (event != NETDEV_BONDING_FAILOVER) | |
3242 | return NOTIFY_DONE; | |
3243 | ||
3244 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
3245 | return NOTIFY_DONE; | |
3246 | ||
3247 | mutex_lock(&lock); | |
3248 | list_for_each_entry(cma_dev, &dev_list, list) | |
3249 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3250 | ret = cma_netdev_change(ndev, id_priv); | |
3251 | if (ret) | |
3252 | goto out; | |
3253 | } | |
3254 | ||
3255 | out: | |
3256 | mutex_unlock(&lock); | |
3257 | return ret; | |
3258 | } | |
3259 | ||
3260 | static struct notifier_block cma_nb = { | |
3261 | .notifier_call = cma_netdev_callback | |
3262 | }; | |
3263 | ||
e51060f0 SH |
3264 | static void cma_add_one(struct ib_device *device) |
3265 | { | |
3266 | struct cma_device *cma_dev; | |
3267 | struct rdma_id_private *id_priv; | |
3268 | ||
3269 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
3270 | if (!cma_dev) | |
3271 | return; | |
3272 | ||
3273 | cma_dev->device = device; | |
e51060f0 SH |
3274 | |
3275 | init_completion(&cma_dev->comp); | |
3276 | atomic_set(&cma_dev->refcount, 1); | |
3277 | INIT_LIST_HEAD(&cma_dev->id_list); | |
3278 | ib_set_client_data(device, &cma_client, cma_dev); | |
3279 | ||
3280 | mutex_lock(&lock); | |
3281 | list_add_tail(&cma_dev->list, &dev_list); | |
3282 | list_for_each_entry(id_priv, &listen_any_list, list) | |
3283 | cma_listen_on_dev(id_priv, cma_dev); | |
3284 | mutex_unlock(&lock); | |
e51060f0 SH |
3285 | } |
3286 | ||
3287 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
3288 | { | |
a1b1b61f | 3289 | struct rdma_cm_event event; |
550e5ca7 | 3290 | enum rdma_cm_state state; |
de910bd9 | 3291 | int ret = 0; |
e51060f0 SH |
3292 | |
3293 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
3294 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
3295 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
3296 | return 0; |
3297 | ||
3298 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 3299 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
3300 | |
3301 | /* Check for destruction from another callback. */ | |
550e5ca7 | 3302 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 3303 | goto out; |
e51060f0 | 3304 | |
a1b1b61f SH |
3305 | memset(&event, 0, sizeof event); |
3306 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
3307 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
3308 | out: | |
3309 | mutex_unlock(&id_priv->handler_mutex); | |
3310 | return ret; | |
e51060f0 SH |
3311 | } |
3312 | ||
3313 | static void cma_process_remove(struct cma_device *cma_dev) | |
3314 | { | |
e51060f0 SH |
3315 | struct rdma_id_private *id_priv; |
3316 | int ret; | |
3317 | ||
e51060f0 SH |
3318 | mutex_lock(&lock); |
3319 | while (!list_empty(&cma_dev->id_list)) { | |
3320 | id_priv = list_entry(cma_dev->id_list.next, | |
3321 | struct rdma_id_private, list); | |
3322 | ||
d02d1f53 | 3323 | list_del(&id_priv->listen_list); |
94de178a | 3324 | list_del_init(&id_priv->list); |
e51060f0 SH |
3325 | atomic_inc(&id_priv->refcount); |
3326 | mutex_unlock(&lock); | |
3327 | ||
d02d1f53 | 3328 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
3329 | cma_deref_id(id_priv); |
3330 | if (ret) | |
3331 | rdma_destroy_id(&id_priv->id); | |
3332 | ||
3333 | mutex_lock(&lock); | |
3334 | } | |
3335 | mutex_unlock(&lock); | |
3336 | ||
3337 | cma_deref_dev(cma_dev); | |
3338 | wait_for_completion(&cma_dev->comp); | |
3339 | } | |
3340 | ||
3341 | static void cma_remove_one(struct ib_device *device) | |
3342 | { | |
3343 | struct cma_device *cma_dev; | |
3344 | ||
3345 | cma_dev = ib_get_client_data(device, &cma_client); | |
3346 | if (!cma_dev) | |
3347 | return; | |
3348 | ||
3349 | mutex_lock(&lock); | |
3350 | list_del(&cma_dev->list); | |
3351 | mutex_unlock(&lock); | |
3352 | ||
3353 | cma_process_remove(cma_dev); | |
3354 | kfree(cma_dev); | |
3355 | } | |
3356 | ||
753f618a NM |
3357 | static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) |
3358 | { | |
3359 | struct nlmsghdr *nlh; | |
3360 | struct rdma_cm_id_stats *id_stats; | |
3361 | struct rdma_id_private *id_priv; | |
3362 | struct rdma_cm_id *id = NULL; | |
3363 | struct cma_device *cma_dev; | |
3364 | int i_dev = 0, i_id = 0; | |
3365 | ||
3366 | /* | |
3367 | * We export all of the IDs as a sequence of messages. Each | |
3368 | * ID gets its own netlink message. | |
3369 | */ | |
3370 | mutex_lock(&lock); | |
3371 | ||
3372 | list_for_each_entry(cma_dev, &dev_list, list) { | |
3373 | if (i_dev < cb->args[0]) { | |
3374 | i_dev++; | |
3375 | continue; | |
3376 | } | |
3377 | ||
3378 | i_id = 0; | |
3379 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3380 | if (i_id < cb->args[1]) { | |
3381 | i_id++; | |
3382 | continue; | |
3383 | } | |
3384 | ||
3385 | id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, | |
3386 | sizeof *id_stats, RDMA_NL_RDMA_CM, | |
3387 | RDMA_NL_RDMA_CM_ID_STATS); | |
3388 | if (!id_stats) | |
3389 | goto out; | |
3390 | ||
3391 | memset(id_stats, 0, sizeof *id_stats); | |
3392 | id = &id_priv->id; | |
3393 | id_stats->node_type = id->route.addr.dev_addr.dev_type; | |
3394 | id_stats->port_num = id->port_num; | |
3395 | id_stats->bound_dev_if = | |
3396 | id->route.addr.dev_addr.bound_dev_if; | |
3397 | ||
3398 | if (id->route.addr.src_addr.ss_family == AF_INET) { | |
3399 | if (ibnl_put_attr(skb, nlh, | |
3400 | sizeof(struct sockaddr_in), | |
3401 | &id->route.addr.src_addr, | |
3402 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) { | |
3403 | goto out; | |
3404 | } | |
3405 | if (ibnl_put_attr(skb, nlh, | |
3406 | sizeof(struct sockaddr_in), | |
3407 | &id->route.addr.dst_addr, | |
3408 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) { | |
3409 | goto out; | |
3410 | } | |
3411 | } else if (id->route.addr.src_addr.ss_family == AF_INET6) { | |
3412 | if (ibnl_put_attr(skb, nlh, | |
3413 | sizeof(struct sockaddr_in6), | |
3414 | &id->route.addr.src_addr, | |
3415 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) { | |
3416 | goto out; | |
3417 | } | |
3418 | if (ibnl_put_attr(skb, nlh, | |
3419 | sizeof(struct sockaddr_in6), | |
3420 | &id->route.addr.dst_addr, | |
3421 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) { | |
3422 | goto out; | |
3423 | } | |
3424 | } | |
3425 | ||
83e9502d | 3426 | id_stats->pid = id_priv->owner; |
753f618a NM |
3427 | id_stats->port_space = id->ps; |
3428 | id_stats->cm_state = id_priv->state; | |
3429 | id_stats->qp_num = id_priv->qp_num; | |
3430 | id_stats->qp_type = id->qp_type; | |
3431 | ||
3432 | i_id++; | |
3433 | } | |
3434 | ||
3435 | cb->args[1] = 0; | |
3436 | i_dev++; | |
3437 | } | |
3438 | ||
3439 | out: | |
3440 | mutex_unlock(&lock); | |
3441 | cb->args[0] = i_dev; | |
3442 | cb->args[1] = i_id; | |
3443 | ||
3444 | return skb->len; | |
3445 | } | |
3446 | ||
3447 | static const struct ibnl_client_cbs cma_cb_table[] = { | |
3448 | [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats }, | |
3449 | }; | |
3450 | ||
716abb1f | 3451 | static int __init cma_init(void) |
e51060f0 | 3452 | { |
5d7220e8 | 3453 | int ret; |
227b60f5 | 3454 | |
c7f743a6 | 3455 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
3456 | if (!cma_wq) |
3457 | return -ENOMEM; | |
3458 | ||
c1a0b23b | 3459 | ib_sa_register_client(&sa_client); |
7a118df3 | 3460 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 3461 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 3462 | |
e51060f0 SH |
3463 | ret = ib_register_client(&cma_client); |
3464 | if (ret) | |
3465 | goto err; | |
753f618a NM |
3466 | |
3467 | if (ibnl_add_client(RDMA_NL_RDMA_CM, RDMA_NL_RDMA_CM_NUM_OPS, cma_cb_table)) | |
3468 | printk(KERN_WARNING "RDMA CMA: failed to add netlink callback\n"); | |
3469 | ||
e51060f0 SH |
3470 | return 0; |
3471 | ||
3472 | err: | |
dd5bdff8 | 3473 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3474 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3475 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3476 | destroy_workqueue(cma_wq); |
3477 | return ret; | |
3478 | } | |
3479 | ||
716abb1f | 3480 | static void __exit cma_cleanup(void) |
e51060f0 | 3481 | { |
753f618a | 3482 | ibnl_remove_client(RDMA_NL_RDMA_CM); |
e51060f0 | 3483 | ib_unregister_client(&cma_client); |
dd5bdff8 | 3484 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3485 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3486 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3487 | destroy_workqueue(cma_wq); |
3488 | idr_destroy(&sdp_ps); | |
3489 | idr_destroy(&tcp_ps); | |
628e5f6d | 3490 | idr_destroy(&udp_ps); |
c8f6a362 | 3491 | idr_destroy(&ipoib_ps); |
2d2e9415 | 3492 | idr_destroy(&ib_ps); |
e51060f0 SH |
3493 | } |
3494 | ||
3495 | module_init(cma_init); | |
3496 | module_exit(cma_cleanup); |