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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> |
366cddb4 | 45 | #include <net/route.h> |
e51060f0 SH |
46 | |
47 | #include <net/tcp.h> | |
1f5175ad | 48 | #include <net/ipv6.h> |
e51060f0 SH |
49 | |
50 | #include <rdma/rdma_cm.h> | |
51 | #include <rdma/rdma_cm_ib.h> | |
753f618a | 52 | #include <rdma/rdma_netlink.h> |
e51060f0 SH |
53 | #include <rdma/ib_cache.h> |
54 | #include <rdma/ib_cm.h> | |
55 | #include <rdma/ib_sa.h> | |
07ebafba | 56 | #include <rdma/iw_cm.h> |
e51060f0 SH |
57 | |
58 | MODULE_AUTHOR("Sean Hefty"); | |
59 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
60 | MODULE_LICENSE("Dual BSD/GPL"); | |
61 | ||
62 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
d5bb7599 | 63 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 64 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 65 | #define CMA_IBOE_PACKET_LIFETIME 18 |
e51060f0 SH |
66 | |
67 | static void cma_add_one(struct ib_device *device); | |
68 | static void cma_remove_one(struct ib_device *device); | |
69 | ||
70 | static struct ib_client cma_client = { | |
71 | .name = "cma", | |
72 | .add = cma_add_one, | |
73 | .remove = cma_remove_one | |
74 | }; | |
75 | ||
c1a0b23b | 76 | static struct ib_sa_client sa_client; |
7a118df3 | 77 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
78 | static LIST_HEAD(dev_list); |
79 | static LIST_HEAD(listen_any_list); | |
80 | static DEFINE_MUTEX(lock); | |
81 | static struct workqueue_struct *cma_wq; | |
82 | static DEFINE_IDR(sdp_ps); | |
83 | static DEFINE_IDR(tcp_ps); | |
628e5f6d | 84 | static DEFINE_IDR(udp_ps); |
c8f6a362 | 85 | static DEFINE_IDR(ipoib_ps); |
2d2e9415 | 86 | static DEFINE_IDR(ib_ps); |
e51060f0 SH |
87 | |
88 | struct cma_device { | |
89 | struct list_head list; | |
90 | struct ib_device *device; | |
e51060f0 SH |
91 | struct completion comp; |
92 | atomic_t refcount; | |
93 | struct list_head id_list; | |
94 | }; | |
95 | ||
e51060f0 SH |
96 | struct rdma_bind_list { |
97 | struct idr *ps; | |
98 | struct hlist_head owners; | |
99 | unsigned short port; | |
100 | }; | |
101 | ||
68602120 SH |
102 | enum { |
103 | CMA_OPTION_AFONLY, | |
104 | }; | |
105 | ||
e51060f0 SH |
106 | /* |
107 | * Device removal can occur at anytime, so we need extra handling to | |
108 | * serialize notifying the user of device removal with other callbacks. | |
109 | * We do this by disabling removal notification while a callback is in process, | |
110 | * and reporting it after the callback completes. | |
111 | */ | |
112 | struct rdma_id_private { | |
113 | struct rdma_cm_id id; | |
114 | ||
115 | struct rdma_bind_list *bind_list; | |
116 | struct hlist_node node; | |
d02d1f53 SH |
117 | struct list_head list; /* listen_any_list or cma_device.list */ |
118 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 119 | struct cma_device *cma_dev; |
c8f6a362 | 120 | struct list_head mc_list; |
e51060f0 | 121 | |
d02d1f53 | 122 | int internal_id; |
550e5ca7 | 123 | enum rdma_cm_state state; |
e51060f0 | 124 | spinlock_t lock; |
c5483388 SH |
125 | struct mutex qp_mutex; |
126 | ||
e51060f0 SH |
127 | struct completion comp; |
128 | atomic_t refcount; | |
de910bd9 | 129 | struct mutex handler_mutex; |
e51060f0 SH |
130 | |
131 | int backlog; | |
132 | int timeout_ms; | |
133 | struct ib_sa_query *query; | |
134 | int query_id; | |
135 | union { | |
136 | struct ib_cm_id *ib; | |
07ebafba | 137 | struct iw_cm_id *iw; |
e51060f0 SH |
138 | } cm_id; |
139 | ||
140 | u32 seq_num; | |
c8f6a362 | 141 | u32 qkey; |
e51060f0 | 142 | u32 qp_num; |
83e9502d | 143 | pid_t owner; |
68602120 | 144 | u32 options; |
e51060f0 | 145 | u8 srq; |
a81c994d | 146 | u8 tos; |
a9bb7912 | 147 | u8 reuseaddr; |
5b0ec991 | 148 | u8 afonly; |
e51060f0 SH |
149 | }; |
150 | ||
c8f6a362 SH |
151 | struct cma_multicast { |
152 | struct rdma_id_private *id_priv; | |
153 | union { | |
154 | struct ib_sa_multicast *ib; | |
155 | } multicast; | |
156 | struct list_head list; | |
157 | void *context; | |
3f446754 | 158 | struct sockaddr_storage addr; |
3c86aa70 | 159 | struct kref mcref; |
c8f6a362 SH |
160 | }; |
161 | ||
e51060f0 SH |
162 | struct cma_work { |
163 | struct work_struct work; | |
164 | struct rdma_id_private *id; | |
550e5ca7 NM |
165 | enum rdma_cm_state old_state; |
166 | enum rdma_cm_state new_state; | |
e51060f0 SH |
167 | struct rdma_cm_event event; |
168 | }; | |
169 | ||
dd5bdff8 OG |
170 | struct cma_ndev_work { |
171 | struct work_struct work; | |
172 | struct rdma_id_private *id; | |
173 | struct rdma_cm_event event; | |
174 | }; | |
175 | ||
3c86aa70 EC |
176 | struct iboe_mcast_work { |
177 | struct work_struct work; | |
178 | struct rdma_id_private *id; | |
179 | struct cma_multicast *mc; | |
180 | }; | |
181 | ||
e51060f0 SH |
182 | union cma_ip_addr { |
183 | struct in6_addr ip6; | |
184 | struct { | |
1b90c137 AV |
185 | __be32 pad[3]; |
186 | __be32 addr; | |
e51060f0 SH |
187 | } ip4; |
188 | }; | |
189 | ||
190 | struct cma_hdr { | |
191 | u8 cma_version; | |
192 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 193 | __be16 port; |
e51060f0 SH |
194 | union cma_ip_addr src_addr; |
195 | union cma_ip_addr dst_addr; | |
196 | }; | |
197 | ||
198 | struct sdp_hh { | |
199 | u8 bsdh[16]; | |
200 | u8 sdp_version; /* Major version: 7:4 */ | |
201 | u8 ip_version; /* IP version: 7:4 */ | |
202 | u8 sdp_specific1[10]; | |
1b90c137 AV |
203 | __be16 port; |
204 | __be16 sdp_specific2; | |
e51060f0 SH |
205 | union cma_ip_addr src_addr; |
206 | union cma_ip_addr dst_addr; | |
207 | }; | |
208 | ||
209 | struct sdp_hah { | |
210 | u8 bsdh[16]; | |
211 | u8 sdp_version; | |
212 | }; | |
213 | ||
214 | #define CMA_VERSION 0x00 | |
215 | #define SDP_MAJ_VERSION 0x2 | |
216 | ||
550e5ca7 | 217 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
218 | { |
219 | unsigned long flags; | |
220 | int ret; | |
221 | ||
222 | spin_lock_irqsave(&id_priv->lock, flags); | |
223 | ret = (id_priv->state == comp); | |
224 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
225 | return ret; | |
226 | } | |
227 | ||
228 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 229 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
230 | { |
231 | unsigned long flags; | |
232 | int ret; | |
233 | ||
234 | spin_lock_irqsave(&id_priv->lock, flags); | |
235 | if ((ret = (id_priv->state == comp))) | |
236 | id_priv->state = exch; | |
237 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
238 | return ret; | |
239 | } | |
240 | ||
550e5ca7 NM |
241 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
242 | enum rdma_cm_state exch) | |
e51060f0 SH |
243 | { |
244 | unsigned long flags; | |
550e5ca7 | 245 | enum rdma_cm_state old; |
e51060f0 SH |
246 | |
247 | spin_lock_irqsave(&id_priv->lock, flags); | |
248 | old = id_priv->state; | |
249 | id_priv->state = exch; | |
250 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
251 | return old; | |
252 | } | |
253 | ||
254 | static inline u8 cma_get_ip_ver(struct cma_hdr *hdr) | |
255 | { | |
256 | return hdr->ip_version >> 4; | |
257 | } | |
258 | ||
259 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
260 | { | |
261 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
262 | } | |
263 | ||
264 | static inline u8 sdp_get_majv(u8 sdp_version) | |
265 | { | |
266 | return sdp_version >> 4; | |
267 | } | |
268 | ||
269 | static inline u8 sdp_get_ip_ver(struct sdp_hh *hh) | |
270 | { | |
271 | return hh->ip_version >> 4; | |
272 | } | |
273 | ||
274 | static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) | |
275 | { | |
276 | hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF); | |
277 | } | |
278 | ||
279 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, | |
280 | struct cma_device *cma_dev) | |
281 | { | |
282 | atomic_inc(&cma_dev->refcount); | |
283 | id_priv->cma_dev = cma_dev; | |
284 | id_priv->id.device = cma_dev->device; | |
3c86aa70 EC |
285 | id_priv->id.route.addr.dev_addr.transport = |
286 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 SH |
287 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
288 | } | |
289 | ||
290 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
291 | { | |
292 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
293 | complete(&cma_dev->comp); | |
294 | } | |
295 | ||
3c86aa70 EC |
296 | static inline void release_mc(struct kref *kref) |
297 | { | |
298 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
299 | ||
300 | kfree(mc->multicast.ib); | |
301 | kfree(mc); | |
302 | } | |
303 | ||
a396d43a | 304 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 305 | { |
a396d43a | 306 | mutex_lock(&lock); |
e51060f0 SH |
307 | list_del(&id_priv->list); |
308 | cma_deref_dev(id_priv->cma_dev); | |
309 | id_priv->cma_dev = NULL; | |
a396d43a | 310 | mutex_unlock(&lock); |
e51060f0 SH |
311 | } |
312 | ||
d2ca39f2 | 313 | static int cma_set_qkey(struct rdma_id_private *id_priv) |
c8f6a362 SH |
314 | { |
315 | struct ib_sa_mcmember_rec rec; | |
316 | int ret = 0; | |
317 | ||
d2ca39f2 YE |
318 | if (id_priv->qkey) |
319 | return 0; | |
320 | ||
321 | switch (id_priv->id.ps) { | |
c8f6a362 | 322 | case RDMA_PS_UDP: |
d2ca39f2 | 323 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
324 | break; |
325 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
326 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
327 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
328 | id_priv->id.port_num, &rec.mgid, | |
329 | &rec); | |
330 | if (!ret) | |
331 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
332 | break; |
333 | default: | |
334 | break; | |
335 | } | |
336 | return ret; | |
337 | } | |
338 | ||
3c86aa70 EC |
339 | static int find_gid_port(struct ib_device *device, union ib_gid *gid, u8 port_num) |
340 | { | |
341 | int i; | |
342 | int err; | |
343 | struct ib_port_attr props; | |
344 | union ib_gid tmp; | |
345 | ||
346 | err = ib_query_port(device, port_num, &props); | |
347 | if (err) | |
63f05be2 | 348 | return err; |
3c86aa70 EC |
349 | |
350 | for (i = 0; i < props.gid_tbl_len; ++i) { | |
351 | err = ib_query_gid(device, port_num, i, &tmp); | |
352 | if (err) | |
63f05be2 | 353 | return err; |
3c86aa70 EC |
354 | if (!memcmp(&tmp, gid, sizeof tmp)) |
355 | return 0; | |
356 | } | |
357 | ||
63f05be2 | 358 | return -EADDRNOTAVAIL; |
3c86aa70 EC |
359 | } |
360 | ||
07ebafba | 361 | static int cma_acquire_dev(struct rdma_id_private *id_priv) |
e51060f0 | 362 | { |
c8f6a362 | 363 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 364 | struct cma_device *cma_dev; |
3c86aa70 | 365 | union ib_gid gid, iboe_gid; |
e51060f0 | 366 | int ret = -ENODEV; |
3c86aa70 EC |
367 | u8 port; |
368 | enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ? | |
369 | IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; | |
e51060f0 | 370 | |
2efdd6a0 MS |
371 | if (dev_ll != IB_LINK_LAYER_INFINIBAND && |
372 | id_priv->id.ps == RDMA_PS_IPOIB) | |
373 | return -EINVAL; | |
374 | ||
a396d43a | 375 | mutex_lock(&lock); |
3c86aa70 EC |
376 | iboe_addr_get_sgid(dev_addr, &iboe_gid); |
377 | memcpy(&gid, dev_addr->src_dev_addr + | |
378 | rdma_addr_gid_offset(dev_addr), sizeof gid); | |
e51060f0 | 379 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 EC |
380 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
381 | if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) { | |
382 | if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB && | |
383 | rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET) | |
384 | ret = find_gid_port(cma_dev->device, &iboe_gid, port); | |
385 | else | |
386 | ret = find_gid_port(cma_dev->device, &gid, port); | |
387 | ||
388 | if (!ret) { | |
389 | id_priv->id.port_num = port; | |
390 | goto out; | |
63f05be2 | 391 | } |
3c86aa70 | 392 | } |
e51060f0 SH |
393 | } |
394 | } | |
3c86aa70 EC |
395 | |
396 | out: | |
397 | if (!ret) | |
398 | cma_attach_to_dev(id_priv, cma_dev); | |
399 | ||
a396d43a | 400 | mutex_unlock(&lock); |
e51060f0 SH |
401 | return ret; |
402 | } | |
403 | ||
e51060f0 SH |
404 | static void cma_deref_id(struct rdma_id_private *id_priv) |
405 | { | |
406 | if (atomic_dec_and_test(&id_priv->refcount)) | |
407 | complete(&id_priv->comp); | |
408 | } | |
409 | ||
de910bd9 | 410 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
550e5ca7 | 411 | enum rdma_cm_state state) |
8aa08602 | 412 | { |
de910bd9 OG |
413 | mutex_lock(&id_priv->handler_mutex); |
414 | if (id_priv->state != state) { | |
415 | mutex_unlock(&id_priv->handler_mutex); | |
416 | return -EINVAL; | |
417 | } | |
418 | return 0; | |
e51060f0 SH |
419 | } |
420 | ||
421 | struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, | |
b26f9b99 SH |
422 | void *context, enum rdma_port_space ps, |
423 | enum ib_qp_type qp_type) | |
e51060f0 SH |
424 | { |
425 | struct rdma_id_private *id_priv; | |
426 | ||
427 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
428 | if (!id_priv) | |
429 | return ERR_PTR(-ENOMEM); | |
430 | ||
83e9502d | 431 | id_priv->owner = task_pid_nr(current); |
550e5ca7 | 432 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
433 | id_priv->id.context = context; |
434 | id_priv->id.event_handler = event_handler; | |
435 | id_priv->id.ps = ps; | |
b26f9b99 | 436 | id_priv->id.qp_type = qp_type; |
e51060f0 | 437 | spin_lock_init(&id_priv->lock); |
c5483388 | 438 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
439 | init_completion(&id_priv->comp); |
440 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 441 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 442 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 443 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 SH |
444 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
445 | ||
446 | return &id_priv->id; | |
447 | } | |
448 | EXPORT_SYMBOL(rdma_create_id); | |
449 | ||
c8f6a362 | 450 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
451 | { |
452 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 453 | int qp_attr_mask, ret; |
e51060f0 | 454 | |
c8f6a362 SH |
455 | qp_attr.qp_state = IB_QPS_INIT; |
456 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
457 | if (ret) |
458 | return ret; | |
459 | ||
c8f6a362 SH |
460 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
461 | if (ret) | |
462 | return ret; | |
463 | ||
464 | qp_attr.qp_state = IB_QPS_RTR; | |
465 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
466 | if (ret) | |
467 | return ret; | |
468 | ||
469 | qp_attr.qp_state = IB_QPS_RTS; | |
470 | qp_attr.sq_psn = 0; | |
471 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
472 | ||
473 | return ret; | |
e51060f0 SH |
474 | } |
475 | ||
c8f6a362 | 476 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
477 | { |
478 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 479 | int qp_attr_mask, ret; |
07ebafba TT |
480 | |
481 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
482 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
483 | if (ret) | |
484 | return ret; | |
07ebafba | 485 | |
c8f6a362 | 486 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
487 | } |
488 | ||
e51060f0 SH |
489 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
490 | struct ib_qp_init_attr *qp_init_attr) | |
491 | { | |
492 | struct rdma_id_private *id_priv; | |
493 | struct ib_qp *qp; | |
494 | int ret; | |
495 | ||
496 | id_priv = container_of(id, struct rdma_id_private, id); | |
497 | if (id->device != pd->device) | |
498 | return -EINVAL; | |
499 | ||
500 | qp = ib_create_qp(pd, qp_init_attr); | |
501 | if (IS_ERR(qp)) | |
502 | return PTR_ERR(qp); | |
503 | ||
b26f9b99 | 504 | if (id->qp_type == IB_QPT_UD) |
c8f6a362 SH |
505 | ret = cma_init_ud_qp(id_priv, qp); |
506 | else | |
507 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
508 | if (ret) |
509 | goto err; | |
510 | ||
511 | id->qp = qp; | |
512 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
513 | id_priv->srq = (qp->srq != NULL); |
514 | return 0; | |
515 | err: | |
516 | ib_destroy_qp(qp); | |
517 | return ret; | |
518 | } | |
519 | EXPORT_SYMBOL(rdma_create_qp); | |
520 | ||
521 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
522 | { | |
c5483388 SH |
523 | struct rdma_id_private *id_priv; |
524 | ||
525 | id_priv = container_of(id, struct rdma_id_private, id); | |
526 | mutex_lock(&id_priv->qp_mutex); | |
527 | ib_destroy_qp(id_priv->id.qp); | |
528 | id_priv->id.qp = NULL; | |
529 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
530 | } |
531 | EXPORT_SYMBOL(rdma_destroy_qp); | |
532 | ||
5851bb89 SH |
533 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
534 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
535 | { |
536 | struct ib_qp_attr qp_attr; | |
537 | int qp_attr_mask, ret; | |
538 | ||
c5483388 SH |
539 | mutex_lock(&id_priv->qp_mutex); |
540 | if (!id_priv->id.qp) { | |
541 | ret = 0; | |
542 | goto out; | |
543 | } | |
e51060f0 SH |
544 | |
545 | /* Need to update QP attributes from default values. */ | |
546 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 547 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 548 | if (ret) |
c5483388 | 549 | goto out; |
e51060f0 | 550 | |
c5483388 | 551 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 552 | if (ret) |
c5483388 | 553 | goto out; |
e51060f0 SH |
554 | |
555 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 556 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 557 | if (ret) |
c5483388 | 558 | goto out; |
e51060f0 | 559 | |
5851bb89 SH |
560 | if (conn_param) |
561 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
562 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
563 | out: | |
564 | mutex_unlock(&id_priv->qp_mutex); | |
565 | return ret; | |
e51060f0 SH |
566 | } |
567 | ||
5851bb89 SH |
568 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
569 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
570 | { |
571 | struct ib_qp_attr qp_attr; | |
572 | int qp_attr_mask, ret; | |
573 | ||
c5483388 SH |
574 | mutex_lock(&id_priv->qp_mutex); |
575 | if (!id_priv->id.qp) { | |
576 | ret = 0; | |
577 | goto out; | |
578 | } | |
e51060f0 SH |
579 | |
580 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 581 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 582 | if (ret) |
c5483388 | 583 | goto out; |
e51060f0 | 584 | |
5851bb89 SH |
585 | if (conn_param) |
586 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
587 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
588 | out: | |
589 | mutex_unlock(&id_priv->qp_mutex); | |
590 | return ret; | |
e51060f0 SH |
591 | } |
592 | ||
c5483388 | 593 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
594 | { |
595 | struct ib_qp_attr qp_attr; | |
c5483388 | 596 | int ret; |
e51060f0 | 597 | |
c5483388 SH |
598 | mutex_lock(&id_priv->qp_mutex); |
599 | if (!id_priv->id.qp) { | |
600 | ret = 0; | |
601 | goto out; | |
602 | } | |
e51060f0 SH |
603 | |
604 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
605 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
606 | out: | |
607 | mutex_unlock(&id_priv->qp_mutex); | |
608 | return ret; | |
e51060f0 SH |
609 | } |
610 | ||
c8f6a362 SH |
611 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
612 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
613 | { | |
614 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
615 | int ret; | |
3c86aa70 EC |
616 | u16 pkey; |
617 | ||
618 | if (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num) == | |
619 | IB_LINK_LAYER_INFINIBAND) | |
620 | pkey = ib_addr_get_pkey(dev_addr); | |
621 | else | |
622 | pkey = 0xffff; | |
c8f6a362 SH |
623 | |
624 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
3c86aa70 | 625 | pkey, &qp_attr->pkey_index); |
c8f6a362 SH |
626 | if (ret) |
627 | return ret; | |
628 | ||
629 | qp_attr->port_num = id_priv->id.port_num; | |
630 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
631 | ||
b26f9b99 | 632 | if (id_priv->id.qp_type == IB_QPT_UD) { |
d2ca39f2 YE |
633 | ret = cma_set_qkey(id_priv); |
634 | if (ret) | |
635 | return ret; | |
636 | ||
c8f6a362 SH |
637 | qp_attr->qkey = id_priv->qkey; |
638 | *qp_attr_mask |= IB_QP_QKEY; | |
639 | } else { | |
640 | qp_attr->qp_access_flags = 0; | |
641 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
642 | } | |
643 | return 0; | |
644 | } | |
645 | ||
e51060f0 SH |
646 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
647 | int *qp_attr_mask) | |
648 | { | |
649 | struct rdma_id_private *id_priv; | |
c8f6a362 | 650 | int ret = 0; |
e51060f0 SH |
651 | |
652 | id_priv = container_of(id, struct rdma_id_private, id); | |
07ebafba TT |
653 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
654 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 655 | if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) |
c8f6a362 SH |
656 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); |
657 | else | |
658 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
659 | qp_attr_mask); | |
e51060f0 SH |
660 | if (qp_attr->qp_state == IB_QPS_RTR) |
661 | qp_attr->rq_psn = id_priv->seq_num; | |
662 | break; | |
07ebafba | 663 | case RDMA_TRANSPORT_IWARP: |
c8f6a362 | 664 | if (!id_priv->cm_id.iw) { |
8f076531 | 665 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
666 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
667 | } else | |
668 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
669 | qp_attr_mask); | |
07ebafba | 670 | break; |
e51060f0 SH |
671 | default: |
672 | ret = -ENOSYS; | |
673 | break; | |
674 | } | |
675 | ||
676 | return ret; | |
677 | } | |
678 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
679 | ||
680 | static inline int cma_zero_addr(struct sockaddr *addr) | |
681 | { | |
682 | struct in6_addr *ip6; | |
683 | ||
684 | if (addr->sa_family == AF_INET) | |
6360a02a JP |
685 | return ipv4_is_zeronet( |
686 | ((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
e51060f0 SH |
687 | else { |
688 | ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr; | |
689 | return (ip6->s6_addr32[0] | ip6->s6_addr32[1] | | |
5fd571cb | 690 | ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0; |
e51060f0 SH |
691 | } |
692 | } | |
693 | ||
694 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
695 | { | |
1f5175ad AS |
696 | if (addr->sa_family == AF_INET) |
697 | return ipv4_is_loopback( | |
698 | ((struct sockaddr_in *) addr)->sin_addr.s_addr); | |
699 | else | |
700 | return ipv6_addr_loopback( | |
701 | &((struct sockaddr_in6 *) addr)->sin6_addr); | |
e51060f0 SH |
702 | } |
703 | ||
704 | static inline int cma_any_addr(struct sockaddr *addr) | |
705 | { | |
706 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
707 | } | |
708 | ||
43b752da HS |
709 | static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) |
710 | { | |
711 | if (src->sa_family != dst->sa_family) | |
712 | return -1; | |
713 | ||
714 | switch (src->sa_family) { | |
715 | case AF_INET: | |
716 | return ((struct sockaddr_in *) src)->sin_addr.s_addr != | |
717 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
718 | default: | |
719 | return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, | |
720 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
721 | } | |
722 | } | |
723 | ||
628e5f6d SH |
724 | static inline __be16 cma_port(struct sockaddr *addr) |
725 | { | |
726 | if (addr->sa_family == AF_INET) | |
727 | return ((struct sockaddr_in *) addr)->sin_port; | |
728 | else | |
729 | return ((struct sockaddr_in6 *) addr)->sin6_port; | |
730 | } | |
731 | ||
e51060f0 SH |
732 | static inline int cma_any_port(struct sockaddr *addr) |
733 | { | |
628e5f6d | 734 | return !cma_port(addr); |
e51060f0 SH |
735 | } |
736 | ||
737 | static int cma_get_net_info(void *hdr, enum rdma_port_space ps, | |
1b90c137 | 738 | u8 *ip_ver, __be16 *port, |
e51060f0 SH |
739 | union cma_ip_addr **src, union cma_ip_addr **dst) |
740 | { | |
741 | switch (ps) { | |
742 | case RDMA_PS_SDP: | |
743 | if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) != | |
744 | SDP_MAJ_VERSION) | |
745 | return -EINVAL; | |
746 | ||
747 | *ip_ver = sdp_get_ip_ver(hdr); | |
748 | *port = ((struct sdp_hh *) hdr)->port; | |
749 | *src = &((struct sdp_hh *) hdr)->src_addr; | |
750 | *dst = &((struct sdp_hh *) hdr)->dst_addr; | |
751 | break; | |
752 | default: | |
753 | if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION) | |
754 | return -EINVAL; | |
755 | ||
756 | *ip_ver = cma_get_ip_ver(hdr); | |
757 | *port = ((struct cma_hdr *) hdr)->port; | |
758 | *src = &((struct cma_hdr *) hdr)->src_addr; | |
759 | *dst = &((struct cma_hdr *) hdr)->dst_addr; | |
760 | break; | |
761 | } | |
762 | ||
763 | if (*ip_ver != 4 && *ip_ver != 6) | |
764 | return -EINVAL; | |
765 | return 0; | |
766 | } | |
767 | ||
768 | static void cma_save_net_info(struct rdma_addr *addr, | |
769 | struct rdma_addr *listen_addr, | |
1b90c137 | 770 | u8 ip_ver, __be16 port, |
e51060f0 SH |
771 | union cma_ip_addr *src, union cma_ip_addr *dst) |
772 | { | |
773 | struct sockaddr_in *listen4, *ip4; | |
774 | struct sockaddr_in6 *listen6, *ip6; | |
775 | ||
776 | switch (ip_ver) { | |
777 | case 4: | |
778 | listen4 = (struct sockaddr_in *) &listen_addr->src_addr; | |
779 | ip4 = (struct sockaddr_in *) &addr->src_addr; | |
780 | ip4->sin_family = listen4->sin_family; | |
781 | ip4->sin_addr.s_addr = dst->ip4.addr; | |
782 | ip4->sin_port = listen4->sin_port; | |
783 | ||
784 | ip4 = (struct sockaddr_in *) &addr->dst_addr; | |
785 | ip4->sin_family = listen4->sin_family; | |
786 | ip4->sin_addr.s_addr = src->ip4.addr; | |
787 | ip4->sin_port = port; | |
788 | break; | |
789 | case 6: | |
790 | listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr; | |
791 | ip6 = (struct sockaddr_in6 *) &addr->src_addr; | |
792 | ip6->sin6_family = listen6->sin6_family; | |
793 | ip6->sin6_addr = dst->ip6; | |
794 | ip6->sin6_port = listen6->sin6_port; | |
795 | ||
796 | ip6 = (struct sockaddr_in6 *) &addr->dst_addr; | |
797 | ip6->sin6_family = listen6->sin6_family; | |
798 | ip6->sin6_addr = src->ip6; | |
799 | ip6->sin6_port = port; | |
800 | break; | |
801 | default: | |
802 | break; | |
803 | } | |
804 | } | |
805 | ||
806 | static inline int cma_user_data_offset(enum rdma_port_space ps) | |
807 | { | |
808 | switch (ps) { | |
809 | case RDMA_PS_SDP: | |
810 | return 0; | |
811 | default: | |
812 | return sizeof(struct cma_hdr); | |
813 | } | |
814 | } | |
815 | ||
e51060f0 SH |
816 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
817 | { | |
3c86aa70 EC |
818 | switch (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num)) { |
819 | case IB_LINK_LAYER_INFINIBAND: | |
e51060f0 SH |
820 | if (id_priv->query) |
821 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
822 | break; | |
823 | default: | |
824 | break; | |
825 | } | |
826 | } | |
827 | ||
e51060f0 SH |
828 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
829 | { | |
830 | struct rdma_id_private *dev_id_priv; | |
831 | ||
d02d1f53 SH |
832 | /* |
833 | * Remove from listen_any_list to prevent added devices from spawning | |
834 | * additional listen requests. | |
835 | */ | |
e51060f0 SH |
836 | mutex_lock(&lock); |
837 | list_del(&id_priv->list); | |
838 | ||
839 | while (!list_empty(&id_priv->listen_list)) { | |
840 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
841 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
842 | /* sync with device removal to avoid duplicate destruction */ |
843 | list_del_init(&dev_id_priv->list); | |
844 | list_del(&dev_id_priv->listen_list); | |
845 | mutex_unlock(&lock); | |
846 | ||
847 | rdma_destroy_id(&dev_id_priv->id); | |
848 | mutex_lock(&lock); | |
e51060f0 SH |
849 | } |
850 | mutex_unlock(&lock); | |
851 | } | |
852 | ||
853 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 854 | enum rdma_cm_state state) |
e51060f0 SH |
855 | { |
856 | switch (state) { | |
550e5ca7 | 857 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
858 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
859 | break; | |
550e5ca7 | 860 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
861 | cma_cancel_route(id_priv); |
862 | break; | |
550e5ca7 | 863 | case RDMA_CM_LISTEN: |
3f446754 RD |
864 | if (cma_any_addr((struct sockaddr *) &id_priv->id.route.addr.src_addr) |
865 | && !id_priv->cma_dev) | |
e51060f0 SH |
866 | cma_cancel_listens(id_priv); |
867 | break; | |
868 | default: | |
869 | break; | |
870 | } | |
871 | } | |
872 | ||
873 | static void cma_release_port(struct rdma_id_private *id_priv) | |
874 | { | |
875 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
876 | ||
877 | if (!bind_list) | |
878 | return; | |
879 | ||
880 | mutex_lock(&lock); | |
881 | hlist_del(&id_priv->node); | |
882 | if (hlist_empty(&bind_list->owners)) { | |
883 | idr_remove(bind_list->ps, bind_list->port); | |
884 | kfree(bind_list); | |
885 | } | |
886 | mutex_unlock(&lock); | |
887 | } | |
888 | ||
c8f6a362 SH |
889 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
890 | { | |
891 | struct cma_multicast *mc; | |
892 | ||
893 | while (!list_empty(&id_priv->mc_list)) { | |
894 | mc = container_of(id_priv->mc_list.next, | |
895 | struct cma_multicast, list); | |
896 | list_del(&mc->list); | |
3c86aa70 EC |
897 | switch (rdma_port_get_link_layer(id_priv->cma_dev->device, id_priv->id.port_num)) { |
898 | case IB_LINK_LAYER_INFINIBAND: | |
899 | ib_sa_free_multicast(mc->multicast.ib); | |
900 | kfree(mc); | |
901 | break; | |
902 | case IB_LINK_LAYER_ETHERNET: | |
903 | kref_put(&mc->mcref, release_mc); | |
904 | break; | |
905 | default: | |
906 | break; | |
907 | } | |
c8f6a362 SH |
908 | } |
909 | } | |
910 | ||
e51060f0 SH |
911 | void rdma_destroy_id(struct rdma_cm_id *id) |
912 | { | |
913 | struct rdma_id_private *id_priv; | |
550e5ca7 | 914 | enum rdma_cm_state state; |
e51060f0 SH |
915 | |
916 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 917 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
918 | cma_cancel_operation(id_priv, state); |
919 | ||
a396d43a SH |
920 | /* |
921 | * Wait for any active callback to finish. New callbacks will find | |
922 | * the id_priv state set to destroying and abort. | |
923 | */ | |
924 | mutex_lock(&id_priv->handler_mutex); | |
925 | mutex_unlock(&id_priv->handler_mutex); | |
926 | ||
e51060f0 | 927 | if (id_priv->cma_dev) { |
3c86aa70 | 928 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
07ebafba | 929 | case RDMA_TRANSPORT_IB: |
0c9361fc | 930 | if (id_priv->cm_id.ib) |
e51060f0 SH |
931 | ib_destroy_cm_id(id_priv->cm_id.ib); |
932 | break; | |
07ebafba | 933 | case RDMA_TRANSPORT_IWARP: |
0c9361fc | 934 | if (id_priv->cm_id.iw) |
07ebafba TT |
935 | iw_destroy_cm_id(id_priv->cm_id.iw); |
936 | break; | |
e51060f0 SH |
937 | default: |
938 | break; | |
939 | } | |
c8f6a362 | 940 | cma_leave_mc_groups(id_priv); |
a396d43a | 941 | cma_release_dev(id_priv); |
e51060f0 SH |
942 | } |
943 | ||
944 | cma_release_port(id_priv); | |
945 | cma_deref_id(id_priv); | |
946 | wait_for_completion(&id_priv->comp); | |
947 | ||
d02d1f53 SH |
948 | if (id_priv->internal_id) |
949 | cma_deref_id(id_priv->id.context); | |
950 | ||
e51060f0 SH |
951 | kfree(id_priv->id.route.path_rec); |
952 | kfree(id_priv); | |
953 | } | |
954 | EXPORT_SYMBOL(rdma_destroy_id); | |
955 | ||
956 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
957 | { | |
958 | int ret; | |
959 | ||
5851bb89 | 960 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
961 | if (ret) |
962 | goto reject; | |
963 | ||
5851bb89 | 964 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
965 | if (ret) |
966 | goto reject; | |
967 | ||
968 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
969 | if (ret) | |
970 | goto reject; | |
971 | ||
972 | return 0; | |
973 | reject: | |
c5483388 | 974 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
975 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
976 | NULL, 0, NULL, 0); | |
977 | return ret; | |
978 | } | |
979 | ||
980 | static int cma_verify_rep(struct rdma_id_private *id_priv, void *data) | |
981 | { | |
982 | if (id_priv->id.ps == RDMA_PS_SDP && | |
983 | sdp_get_majv(((struct sdp_hah *) data)->sdp_version) != | |
984 | SDP_MAJ_VERSION) | |
985 | return -EINVAL; | |
986 | ||
987 | return 0; | |
988 | } | |
989 | ||
a1b1b61f SH |
990 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
991 | struct ib_cm_rep_event_param *rep_data, | |
992 | void *private_data) | |
993 | { | |
994 | event->param.conn.private_data = private_data; | |
995 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
996 | event->param.conn.responder_resources = rep_data->responder_resources; | |
997 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
998 | event->param.conn.flow_control = rep_data->flow_control; | |
999 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
1000 | event->param.conn.srq = rep_data->srq; | |
1001 | event->param.conn.qp_num = rep_data->remote_qpn; | |
1002 | } | |
1003 | ||
e51060f0 SH |
1004 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1005 | { | |
1006 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
1007 | struct rdma_cm_event event; |
1008 | int ret = 0; | |
e51060f0 | 1009 | |
38ca83a5 | 1010 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1011 | cma_disable_callback(id_priv, RDMA_CM_CONNECT)) || |
38ca83a5 | 1012 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1013 | cma_disable_callback(id_priv, RDMA_CM_DISCONNECT))) |
8aa08602 | 1014 | return 0; |
e51060f0 | 1015 | |
a1b1b61f | 1016 | memset(&event, 0, sizeof event); |
e51060f0 SH |
1017 | switch (ib_event->event) { |
1018 | case IB_CM_REQ_ERROR: | |
1019 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1020 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1021 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1022 | break; |
1023 | case IB_CM_REP_RECEIVED: | |
a1b1b61f SH |
1024 | event.status = cma_verify_rep(id_priv, ib_event->private_data); |
1025 | if (event.status) | |
1026 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
e51060f0 | 1027 | else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) { |
a1b1b61f SH |
1028 | event.status = cma_rep_recv(id_priv); |
1029 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1030 | RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 | 1031 | } else |
a1b1b61f SH |
1032 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
1033 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, | |
1034 | ib_event->private_data); | |
e51060f0 SH |
1035 | break; |
1036 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1037 | case IB_CM_USER_ESTABLISHED: |
1038 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1039 | break; |
1040 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1041 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1042 | case IB_CM_DREQ_RECEIVED: |
1043 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1044 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1045 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1046 | goto out; |
a1b1b61f | 1047 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1048 | break; |
1049 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1050 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1051 | break; | |
e51060f0 SH |
1052 | case IB_CM_MRA_RECEIVED: |
1053 | /* ignore event */ | |
1054 | goto out; | |
1055 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 1056 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1057 | event.status = ib_event->param.rej_rcvd.reason; |
1058 | event.event = RDMA_CM_EVENT_REJECTED; | |
1059 | event.param.conn.private_data = ib_event->private_data; | |
1060 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1061 | break; |
1062 | default: | |
468f2239 | 1063 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1064 | ib_event->event); |
1065 | goto out; | |
1066 | } | |
1067 | ||
a1b1b61f | 1068 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1069 | if (ret) { |
1070 | /* Destroy the CM ID by returning a non-zero value. */ | |
1071 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1072 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1073 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1074 | rdma_destroy_id(&id_priv->id); |
1075 | return ret; | |
1076 | } | |
1077 | out: | |
de910bd9 | 1078 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1079 | return ret; |
1080 | } | |
1081 | ||
628e5f6d SH |
1082 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
1083 | struct ib_cm_event *ib_event) | |
e51060f0 SH |
1084 | { |
1085 | struct rdma_id_private *id_priv; | |
1086 | struct rdma_cm_id *id; | |
1087 | struct rdma_route *rt; | |
1088 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1089 | __be16 port; |
e51060f0 | 1090 | u8 ip_ver; |
64c5e613 | 1091 | int ret; |
e51060f0 | 1092 | |
3f168d2b KK |
1093 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1094 | &ip_ver, &port, &src, &dst)) | |
0c9361fc | 1095 | return NULL; |
3f168d2b | 1096 | |
e51060f0 | 1097 | id = rdma_create_id(listen_id->event_handler, listen_id->context, |
b26f9b99 | 1098 | listen_id->ps, ib_event->param.req_rcvd.qp_type); |
e51060f0 | 1099 | if (IS_ERR(id)) |
0c9361fc | 1100 | return NULL; |
3f168d2b KK |
1101 | |
1102 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1103 | ip_ver, port, src, dst); | |
e51060f0 SH |
1104 | |
1105 | rt = &id->route; | |
1106 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1107 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1108 | GFP_KERNEL); | |
e51060f0 | 1109 | if (!rt->path_rec) |
0c9361fc | 1110 | goto err; |
e51060f0 | 1111 | |
e51060f0 SH |
1112 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1113 | if (rt->num_paths == 2) | |
1114 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1115 | ||
6f8372b6 SH |
1116 | if (cma_any_addr((struct sockaddr *) &rt->addr.src_addr)) { |
1117 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; | |
1118 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
46ea5061 | 1119 | ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); |
6f8372b6 SH |
1120 | } else { |
1121 | ret = rdma_translate_ip((struct sockaddr *) &rt->addr.src_addr, | |
1122 | &rt->addr.dev_addr); | |
1123 | if (ret) | |
0c9361fc | 1124 | goto err; |
6f8372b6 SH |
1125 | } |
1126 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 SH |
1127 | |
1128 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1129 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 1130 | return id_priv; |
3f168d2b | 1131 | |
3f168d2b | 1132 | err: |
0c9361fc | 1133 | rdma_destroy_id(id); |
e51060f0 SH |
1134 | return NULL; |
1135 | } | |
1136 | ||
628e5f6d SH |
1137 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
1138 | struct ib_cm_event *ib_event) | |
1139 | { | |
1140 | struct rdma_id_private *id_priv; | |
1141 | struct rdma_cm_id *id; | |
1142 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1143 | __be16 port; |
628e5f6d SH |
1144 | u8 ip_ver; |
1145 | int ret; | |
1146 | ||
1147 | id = rdma_create_id(listen_id->event_handler, listen_id->context, | |
b26f9b99 | 1148 | listen_id->ps, IB_QPT_UD); |
628e5f6d SH |
1149 | if (IS_ERR(id)) |
1150 | return NULL; | |
1151 | ||
1152 | ||
1153 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, | |
1154 | &ip_ver, &port, &src, &dst)) | |
1155 | goto err; | |
1156 | ||
1157 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1158 | ip_ver, port, src, dst); | |
1159 | ||
6f8372b6 SH |
1160 | if (!cma_any_addr((struct sockaddr *) &id->route.addr.src_addr)) { |
1161 | ret = rdma_translate_ip((struct sockaddr *) &id->route.addr.src_addr, | |
1162 | &id->route.addr.dev_addr); | |
1163 | if (ret) | |
1164 | goto err; | |
1165 | } | |
628e5f6d SH |
1166 | |
1167 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1168 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
1169 | return id_priv; |
1170 | err: | |
1171 | rdma_destroy_id(id); | |
1172 | return NULL; | |
1173 | } | |
1174 | ||
a1b1b61f SH |
1175 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1176 | struct ib_cm_req_event_param *req_data, | |
1177 | void *private_data, int offset) | |
1178 | { | |
1179 | event->param.conn.private_data = private_data + offset; | |
1180 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1181 | event->param.conn.responder_resources = req_data->responder_resources; | |
1182 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1183 | event->param.conn.flow_control = req_data->flow_control; | |
1184 | event->param.conn.retry_count = req_data->retry_count; | |
1185 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1186 | event->param.conn.srq = req_data->srq; | |
1187 | event->param.conn.qp_num = req_data->remote_qpn; | |
1188 | } | |
1189 | ||
9595480c HS |
1190 | static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) |
1191 | { | |
4dd81e89 | 1192 | return (((ib_event->event == IB_CM_REQ_RECEIVED) && |
9595480c HS |
1193 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || |
1194 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
1195 | (id->qp_type == IB_QPT_UD)) || | |
1196 | (!id->qp_type)); | |
1197 | } | |
1198 | ||
e51060f0 SH |
1199 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1200 | { | |
1201 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1202 | struct rdma_cm_event event; |
e51060f0 SH |
1203 | int offset, ret; |
1204 | ||
1205 | listen_id = cm_id->context; | |
9595480c HS |
1206 | if (!cma_check_req_qp_type(&listen_id->id, ib_event)) |
1207 | return -EINVAL; | |
1208 | ||
550e5ca7 | 1209 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1210 | return -ECONNABORTED; |
e51060f0 | 1211 | |
628e5f6d SH |
1212 | memset(&event, 0, sizeof event); |
1213 | offset = cma_user_data_offset(listen_id->id.ps); | |
1214 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
9595480c | 1215 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
628e5f6d SH |
1216 | conn_id = cma_new_udp_id(&listen_id->id, ib_event); |
1217 | event.param.ud.private_data = ib_event->private_data + offset; | |
1218 | event.param.ud.private_data_len = | |
1219 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1220 | } else { | |
1221 | conn_id = cma_new_conn_id(&listen_id->id, ib_event); | |
1222 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, | |
1223 | ib_event->private_data, offset); | |
1224 | } | |
e51060f0 SH |
1225 | if (!conn_id) { |
1226 | ret = -ENOMEM; | |
b6cec8aa | 1227 | goto err1; |
e51060f0 SH |
1228 | } |
1229 | ||
de910bd9 | 1230 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
07ebafba | 1231 | ret = cma_acquire_dev(conn_id); |
a1a733f6 | 1232 | if (ret) |
b6cec8aa | 1233 | goto err2; |
e51060f0 SH |
1234 | |
1235 | conn_id->cm_id.ib = cm_id; | |
1236 | cm_id->context = conn_id; | |
1237 | cm_id->cm_handler = cma_ib_handler; | |
1238 | ||
25ae21a1 SH |
1239 | /* |
1240 | * Protect against the user destroying conn_id from another thread | |
1241 | * until we're done accessing it. | |
1242 | */ | |
1243 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1244 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
b6cec8aa SH |
1245 | if (ret) |
1246 | goto err3; | |
1247 | ||
1248 | /* | |
1249 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1250 | * while we're accessing the cm_id. | |
1251 | */ | |
1252 | mutex_lock(&lock); | |
1253 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && (conn_id->id.qp_type != IB_QPT_UD)) | |
1254 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); | |
1255 | mutex_unlock(&lock); | |
1256 | mutex_unlock(&conn_id->handler_mutex); | |
1257 | mutex_unlock(&listen_id->handler_mutex); | |
25ae21a1 | 1258 | cma_deref_id(conn_id); |
b6cec8aa | 1259 | return 0; |
a1a733f6 | 1260 | |
b6cec8aa SH |
1261 | err3: |
1262 | cma_deref_id(conn_id); | |
a1a733f6 KK |
1263 | /* Destroy the CM ID by returning a non-zero value. */ |
1264 | conn_id->cm_id.ib = NULL; | |
b6cec8aa | 1265 | err2: |
550e5ca7 | 1266 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1267 | mutex_unlock(&conn_id->handler_mutex); |
b6cec8aa | 1268 | err1: |
de910bd9 | 1269 | mutex_unlock(&listen_id->handler_mutex); |
b6cec8aa SH |
1270 | if (conn_id) |
1271 | rdma_destroy_id(&conn_id->id); | |
e51060f0 SH |
1272 | return ret; |
1273 | } | |
1274 | ||
1275 | static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr) | |
1276 | { | |
628e5f6d | 1277 | return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 SH |
1278 | } |
1279 | ||
1280 | static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr, | |
1281 | struct ib_cm_compare_data *compare) | |
1282 | { | |
1283 | struct cma_hdr *cma_data, *cma_mask; | |
1284 | struct sdp_hh *sdp_data, *sdp_mask; | |
1b90c137 | 1285 | __be32 ip4_addr; |
e51060f0 SH |
1286 | struct in6_addr ip6_addr; |
1287 | ||
1288 | memset(compare, 0, sizeof *compare); | |
1289 | cma_data = (void *) compare->data; | |
1290 | cma_mask = (void *) compare->mask; | |
1291 | sdp_data = (void *) compare->data; | |
1292 | sdp_mask = (void *) compare->mask; | |
1293 | ||
1294 | switch (addr->sa_family) { | |
1295 | case AF_INET: | |
1296 | ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | |
1297 | if (ps == RDMA_PS_SDP) { | |
1298 | sdp_set_ip_ver(sdp_data, 4); | |
1299 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1300 | sdp_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1301 | sdp_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1302 | } else { |
1303 | cma_set_ip_ver(cma_data, 4); | |
1304 | cma_set_ip_ver(cma_mask, 0xF); | |
406b6a25 SH |
1305 | if (!cma_any_addr(addr)) { |
1306 | cma_data->dst_addr.ip4.addr = ip4_addr; | |
1307 | cma_mask->dst_addr.ip4.addr = htonl(~0); | |
1308 | } | |
e51060f0 SH |
1309 | } |
1310 | break; | |
1311 | case AF_INET6: | |
1312 | ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr; | |
1313 | if (ps == RDMA_PS_SDP) { | |
1314 | sdp_set_ip_ver(sdp_data, 6); | |
1315 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1316 | sdp_data->dst_addr.ip6 = ip6_addr; | |
1317 | memset(&sdp_mask->dst_addr.ip6, 0xFF, | |
1318 | sizeof sdp_mask->dst_addr.ip6); | |
1319 | } else { | |
1320 | cma_set_ip_ver(cma_data, 6); | |
1321 | cma_set_ip_ver(cma_mask, 0xF); | |
406b6a25 SH |
1322 | if (!cma_any_addr(addr)) { |
1323 | cma_data->dst_addr.ip6 = ip6_addr; | |
1324 | memset(&cma_mask->dst_addr.ip6, 0xFF, | |
1325 | sizeof cma_mask->dst_addr.ip6); | |
1326 | } | |
e51060f0 SH |
1327 | } |
1328 | break; | |
1329 | default: | |
1330 | break; | |
1331 | } | |
1332 | } | |
1333 | ||
07ebafba TT |
1334 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1335 | { | |
1336 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1337 | struct rdma_cm_event event; |
07ebafba TT |
1338 | struct sockaddr_in *sin; |
1339 | int ret = 0; | |
1340 | ||
550e5ca7 | 1341 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
be65f086 | 1342 | return 0; |
07ebafba | 1343 | |
be65f086 | 1344 | memset(&event, 0, sizeof event); |
07ebafba TT |
1345 | switch (iw_event->event) { |
1346 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1347 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1348 | break; |
1349 | case IW_CM_EVENT_CONNECT_REPLY: | |
1350 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1351 | *sin = iw_event->local_addr; | |
1352 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.dst_addr; | |
1353 | *sin = iw_event->remote_addr; | |
881a045f SW |
1354 | switch (iw_event->status) { |
1355 | case 0: | |
a1b1b61f | 1356 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1357 | event.param.conn.initiator_depth = iw_event->ird; |
1358 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
1359 | break; |
1360 | case -ECONNRESET: | |
1361 | case -ECONNREFUSED: | |
1362 | event.event = RDMA_CM_EVENT_REJECTED; | |
1363 | break; | |
1364 | case -ETIMEDOUT: | |
1365 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1366 | break; | |
1367 | default: | |
1368 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1369 | break; | |
1370 | } | |
07ebafba TT |
1371 | break; |
1372 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1373 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1374 | event.param.conn.initiator_depth = iw_event->ird; |
1375 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
1376 | break; |
1377 | default: | |
1378 | BUG_ON(1); | |
1379 | } | |
1380 | ||
a1b1b61f SH |
1381 | event.status = iw_event->status; |
1382 | event.param.conn.private_data = iw_event->private_data; | |
1383 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1384 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1385 | if (ret) { |
1386 | /* Destroy the CM ID by returning a non-zero value. */ | |
1387 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 1388 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1389 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1390 | rdma_destroy_id(&id_priv->id); |
1391 | return ret; | |
1392 | } | |
1393 | ||
de910bd9 | 1394 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1395 | return ret; |
1396 | } | |
1397 | ||
1398 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1399 | struct iw_cm_event *iw_event) | |
1400 | { | |
1401 | struct rdma_cm_id *new_cm_id; | |
1402 | struct rdma_id_private *listen_id, *conn_id; | |
1403 | struct sockaddr_in *sin; | |
1404 | struct net_device *dev = NULL; | |
a1b1b61f | 1405 | struct rdma_cm_event event; |
07ebafba | 1406 | int ret; |
8d8293cf | 1407 | struct ib_device_attr attr; |
07ebafba TT |
1408 | |
1409 | listen_id = cm_id->context; | |
550e5ca7 | 1410 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1411 | return -ECONNABORTED; |
07ebafba TT |
1412 | |
1413 | /* Create a new RDMA id for the new IW CM ID */ | |
1414 | new_cm_id = rdma_create_id(listen_id->id.event_handler, | |
1415 | listen_id->id.context, | |
b26f9b99 | 1416 | RDMA_PS_TCP, IB_QPT_RC); |
10f32065 | 1417 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1418 | ret = -ENOMEM; |
1419 | goto out; | |
1420 | } | |
1421 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1422 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 1423 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 1424 | |
1ab35276 | 1425 | dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr); |
07ebafba TT |
1426 | if (!dev) { |
1427 | ret = -EADDRNOTAVAIL; | |
de910bd9 | 1428 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1429 | rdma_destroy_id(new_cm_id); |
1430 | goto out; | |
1431 | } | |
1432 | ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL); | |
1433 | if (ret) { | |
de910bd9 | 1434 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1435 | rdma_destroy_id(new_cm_id); |
1436 | goto out; | |
1437 | } | |
1438 | ||
1439 | ret = cma_acquire_dev(conn_id); | |
1440 | if (ret) { | |
de910bd9 | 1441 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1442 | rdma_destroy_id(new_cm_id); |
1443 | goto out; | |
1444 | } | |
1445 | ||
1446 | conn_id->cm_id.iw = cm_id; | |
1447 | cm_id->context = conn_id; | |
1448 | cm_id->cm_handler = cma_iw_handler; | |
1449 | ||
1450 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.src_addr; | |
1451 | *sin = iw_event->local_addr; | |
1452 | sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr; | |
1453 | *sin = iw_event->remote_addr; | |
1454 | ||
8d8293cf SW |
1455 | ret = ib_query_device(conn_id->id.device, &attr); |
1456 | if (ret) { | |
de910bd9 | 1457 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1458 | rdma_destroy_id(new_cm_id); |
1459 | goto out; | |
1460 | } | |
1461 | ||
a1b1b61f SH |
1462 | memset(&event, 0, sizeof event); |
1463 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1464 | event.param.conn.private_data = iw_event->private_data; | |
1465 | event.param.conn.private_data_len = iw_event->private_data_len; | |
3ebeebc3 KS |
1466 | event.param.conn.initiator_depth = iw_event->ird; |
1467 | event.param.conn.responder_resources = iw_event->ord; | |
25ae21a1 SH |
1468 | |
1469 | /* | |
1470 | * Protect against the user destroying conn_id from another thread | |
1471 | * until we're done accessing it. | |
1472 | */ | |
1473 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1474 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1475 | if (ret) { |
1476 | /* User wants to destroy the CM ID */ | |
1477 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 1478 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1479 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1480 | cma_deref_id(conn_id); |
07ebafba | 1481 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1482 | goto out; |
07ebafba TT |
1483 | } |
1484 | ||
de910bd9 | 1485 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1486 | cma_deref_id(conn_id); |
de910bd9 | 1487 | |
07ebafba TT |
1488 | out: |
1489 | if (dev) | |
1490 | dev_put(dev); | |
de910bd9 | 1491 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1492 | return ret; |
1493 | } | |
1494 | ||
e51060f0 SH |
1495 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1496 | { | |
1497 | struct ib_cm_compare_data compare_data; | |
1498 | struct sockaddr *addr; | |
0c9361fc | 1499 | struct ib_cm_id *id; |
e51060f0 SH |
1500 | __be64 svc_id; |
1501 | int ret; | |
1502 | ||
0c9361fc JM |
1503 | id = ib_create_cm_id(id_priv->id.device, cma_req_handler, id_priv); |
1504 | if (IS_ERR(id)) | |
1505 | return PTR_ERR(id); | |
1506 | ||
1507 | id_priv->cm_id.ib = id; | |
e51060f0 | 1508 | |
3f446754 | 1509 | addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
e51060f0 | 1510 | svc_id = cma_get_service_id(id_priv->id.ps, addr); |
406b6a25 | 1511 | if (cma_any_addr(addr) && !id_priv->afonly) |
e51060f0 SH |
1512 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL); |
1513 | else { | |
1514 | cma_set_compare_data(id_priv->id.ps, addr, &compare_data); | |
1515 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, &compare_data); | |
1516 | } | |
1517 | ||
1518 | if (ret) { | |
1519 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
1520 | id_priv->cm_id.ib = NULL; | |
1521 | } | |
1522 | ||
1523 | return ret; | |
1524 | } | |
1525 | ||
07ebafba TT |
1526 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1527 | { | |
1528 | int ret; | |
1529 | struct sockaddr_in *sin; | |
0c9361fc JM |
1530 | struct iw_cm_id *id; |
1531 | ||
1532 | id = iw_create_cm_id(id_priv->id.device, | |
1533 | iw_conn_req_handler, | |
1534 | id_priv); | |
1535 | if (IS_ERR(id)) | |
1536 | return PTR_ERR(id); | |
07ebafba | 1537 | |
0c9361fc | 1538 | id_priv->cm_id.iw = id; |
07ebafba TT |
1539 | |
1540 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
1541 | id_priv->cm_id.iw->local_addr = *sin; | |
1542 | ||
1543 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
1544 | ||
1545 | if (ret) { | |
1546 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
1547 | id_priv->cm_id.iw = NULL; | |
1548 | } | |
1549 | ||
1550 | return ret; | |
1551 | } | |
1552 | ||
e51060f0 SH |
1553 | static int cma_listen_handler(struct rdma_cm_id *id, |
1554 | struct rdma_cm_event *event) | |
1555 | { | |
1556 | struct rdma_id_private *id_priv = id->context; | |
1557 | ||
1558 | id->context = id_priv->id.context; | |
1559 | id->event_handler = id_priv->id.event_handler; | |
1560 | return id_priv->id.event_handler(id, event); | |
1561 | } | |
1562 | ||
1563 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
1564 | struct cma_device *cma_dev) | |
1565 | { | |
1566 | struct rdma_id_private *dev_id_priv; | |
1567 | struct rdma_cm_id *id; | |
1568 | int ret; | |
1569 | ||
b26f9b99 SH |
1570 | id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps, |
1571 | id_priv->id.qp_type); | |
e51060f0 SH |
1572 | if (IS_ERR(id)) |
1573 | return; | |
1574 | ||
1575 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
1576 | ||
550e5ca7 | 1577 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
e51060f0 | 1578 | memcpy(&id->route.addr.src_addr, &id_priv->id.route.addr.src_addr, |
3f446754 | 1579 | ip_addr_size((struct sockaddr *) &id_priv->id.route.addr.src_addr)); |
e51060f0 SH |
1580 | |
1581 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
1582 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
1583 | atomic_inc(&id_priv->refcount); |
1584 | dev_id_priv->internal_id = 1; | |
5b0ec991 | 1585 | dev_id_priv->afonly = id_priv->afonly; |
e51060f0 SH |
1586 | |
1587 | ret = rdma_listen(id, id_priv->backlog); | |
1588 | if (ret) | |
d02d1f53 | 1589 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 1590 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
1591 | } |
1592 | ||
1593 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
1594 | { | |
1595 | struct cma_device *cma_dev; | |
1596 | ||
1597 | mutex_lock(&lock); | |
1598 | list_add_tail(&id_priv->list, &listen_any_list); | |
1599 | list_for_each_entry(cma_dev, &dev_list, list) | |
1600 | cma_listen_on_dev(id_priv, cma_dev); | |
1601 | mutex_unlock(&lock); | |
1602 | } | |
1603 | ||
a81c994d SH |
1604 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
1605 | { | |
1606 | struct rdma_id_private *id_priv; | |
1607 | ||
1608 | id_priv = container_of(id, struct rdma_id_private, id); | |
1609 | id_priv->tos = (u8) tos; | |
1610 | } | |
1611 | EXPORT_SYMBOL(rdma_set_service_type); | |
1612 | ||
e51060f0 SH |
1613 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
1614 | void *context) | |
1615 | { | |
1616 | struct cma_work *work = context; | |
1617 | struct rdma_route *route; | |
1618 | ||
1619 | route = &work->id->id.route; | |
1620 | ||
1621 | if (!status) { | |
1622 | route->num_paths = 1; | |
1623 | *route->path_rec = *path_rec; | |
1624 | } else { | |
550e5ca7 NM |
1625 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1626 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 1627 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 1628 | work->event.status = status; |
e51060f0 SH |
1629 | } |
1630 | ||
1631 | queue_work(cma_wq, &work->work); | |
1632 | } | |
1633 | ||
1634 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
1635 | struct cma_work *work) | |
1636 | { | |
a81c994d | 1637 | struct rdma_addr *addr = &id_priv->id.route.addr; |
e51060f0 | 1638 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
1639 | ib_sa_comp_mask comp_mask; |
1640 | struct sockaddr_in6 *sin6; | |
e51060f0 SH |
1641 | |
1642 | memset(&path_rec, 0, sizeof path_rec); | |
6f8372b6 SH |
1643 | rdma_addr_get_sgid(&addr->dev_addr, &path_rec.sgid); |
1644 | rdma_addr_get_dgid(&addr->dev_addr, &path_rec.dgid); | |
a81c994d | 1645 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(&addr->dev_addr)); |
e51060f0 | 1646 | path_rec.numb_path = 1; |
962063e6 | 1647 | path_rec.reversible = 1; |
3f446754 RD |
1648 | path_rec.service_id = cma_get_service_id(id_priv->id.ps, |
1649 | (struct sockaddr *) &addr->dst_addr); | |
a81c994d SH |
1650 | |
1651 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
1652 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
1653 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
1654 | ||
3f446754 | 1655 | if (addr->src_addr.ss_family == AF_INET) { |
a81c994d SH |
1656 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
1657 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
1658 | } else { | |
1659 | sin6 = (struct sockaddr_in6 *) &addr->src_addr; | |
1660 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); | |
1661 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
1662 | } | |
e51060f0 | 1663 | |
c1a0b23b | 1664 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
1665 | id_priv->id.port_num, &path_rec, |
1666 | comp_mask, timeout_ms, | |
1667 | GFP_KERNEL, cma_query_handler, | |
1668 | work, &id_priv->query); | |
e51060f0 SH |
1669 | |
1670 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
1671 | } | |
1672 | ||
c4028958 | 1673 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 1674 | { |
c4028958 | 1675 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
1676 | struct rdma_id_private *id_priv = work->id; |
1677 | int destroy = 0; | |
1678 | ||
de910bd9 | 1679 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
1680 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
1681 | goto out; | |
1682 | ||
1683 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 1684 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1685 | destroy = 1; |
1686 | } | |
1687 | out: | |
de910bd9 | 1688 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1689 | cma_deref_id(id_priv); |
1690 | if (destroy) | |
1691 | rdma_destroy_id(&id_priv->id); | |
1692 | kfree(work); | |
1693 | } | |
1694 | ||
dd5bdff8 OG |
1695 | static void cma_ndev_work_handler(struct work_struct *_work) |
1696 | { | |
1697 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
1698 | struct rdma_id_private *id_priv = work->id; | |
1699 | int destroy = 0; | |
1700 | ||
1701 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
1702 | if (id_priv->state == RDMA_CM_DESTROYING || |
1703 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
1704 | goto out; |
1705 | ||
1706 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 1707 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
1708 | destroy = 1; |
1709 | } | |
1710 | ||
1711 | out: | |
1712 | mutex_unlock(&id_priv->handler_mutex); | |
1713 | cma_deref_id(id_priv); | |
1714 | if (destroy) | |
1715 | rdma_destroy_id(&id_priv->id); | |
1716 | kfree(work); | |
1717 | } | |
1718 | ||
e51060f0 SH |
1719 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
1720 | { | |
1721 | struct rdma_route *route = &id_priv->id.route; | |
1722 | struct cma_work *work; | |
1723 | int ret; | |
1724 | ||
1725 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1726 | if (!work) | |
1727 | return -ENOMEM; | |
1728 | ||
1729 | work->id = id_priv; | |
c4028958 | 1730 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
1731 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1732 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
e51060f0 SH |
1733 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1734 | ||
1735 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1736 | if (!route->path_rec) { | |
1737 | ret = -ENOMEM; | |
1738 | goto err1; | |
1739 | } | |
1740 | ||
1741 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
1742 | if (ret) | |
1743 | goto err2; | |
1744 | ||
1745 | return 0; | |
1746 | err2: | |
1747 | kfree(route->path_rec); | |
1748 | route->path_rec = NULL; | |
1749 | err1: | |
1750 | kfree(work); | |
1751 | return ret; | |
1752 | } | |
1753 | ||
1754 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
1755 | struct ib_sa_path_rec *path_rec, int num_paths) | |
1756 | { | |
1757 | struct rdma_id_private *id_priv; | |
1758 | int ret; | |
1759 | ||
1760 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
1761 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
1762 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
1763 | return -EINVAL; |
1764 | ||
9893e742 JL |
1765 | id->route.path_rec = kmemdup(path_rec, sizeof *path_rec * num_paths, |
1766 | GFP_KERNEL); | |
e51060f0 SH |
1767 | if (!id->route.path_rec) { |
1768 | ret = -ENOMEM; | |
1769 | goto err; | |
1770 | } | |
1771 | ||
ae2d9293 | 1772 | id->route.num_paths = num_paths; |
e51060f0 SH |
1773 | return 0; |
1774 | err: | |
550e5ca7 | 1775 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
1776 | return ret; |
1777 | } | |
1778 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
1779 | ||
07ebafba TT |
1780 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
1781 | { | |
1782 | struct cma_work *work; | |
1783 | ||
1784 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1785 | if (!work) | |
1786 | return -ENOMEM; | |
1787 | ||
1788 | work->id = id_priv; | |
c4028958 | 1789 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
1790 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1791 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
07ebafba TT |
1792 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1793 | queue_work(cma_wq, &work->work); | |
1794 | return 0; | |
1795 | } | |
1796 | ||
3c86aa70 EC |
1797 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
1798 | { | |
1799 | struct rdma_route *route = &id_priv->id.route; | |
1800 | struct rdma_addr *addr = &route->addr; | |
1801 | struct cma_work *work; | |
1802 | int ret; | |
1803 | struct sockaddr_in *src_addr = (struct sockaddr_in *)&route->addr.src_addr; | |
1804 | struct sockaddr_in *dst_addr = (struct sockaddr_in *)&route->addr.dst_addr; | |
1805 | struct net_device *ndev = NULL; | |
af7bd463 | 1806 | u16 vid; |
3c86aa70 EC |
1807 | |
1808 | if (src_addr->sin_family != dst_addr->sin_family) | |
1809 | return -EINVAL; | |
1810 | ||
1811 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1812 | if (!work) | |
1813 | return -ENOMEM; | |
1814 | ||
1815 | work->id = id_priv; | |
1816 | INIT_WORK(&work->work, cma_work_handler); | |
1817 | ||
1818 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1819 | if (!route->path_rec) { | |
1820 | ret = -ENOMEM; | |
1821 | goto err1; | |
1822 | } | |
1823 | ||
1824 | route->num_paths = 1; | |
1825 | ||
3c86aa70 EC |
1826 | if (addr->dev_addr.bound_dev_if) |
1827 | ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); | |
1828 | if (!ndev) { | |
1829 | ret = -ENODEV; | |
1830 | goto err2; | |
1831 | } | |
1832 | ||
af7bd463 EC |
1833 | vid = rdma_vlan_dev_vlan_id(ndev); |
1834 | ||
1835 | iboe_mac_vlan_to_ll(&route->path_rec->sgid, addr->dev_addr.src_dev_addr, vid); | |
1836 | iboe_mac_vlan_to_ll(&route->path_rec->dgid, addr->dev_addr.dst_dev_addr, vid); | |
1837 | ||
1838 | route->path_rec->hop_limit = 1; | |
1839 | route->path_rec->reversible = 1; | |
1840 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
1841 | route->path_rec->mtu_selector = IB_SA_EQ; | |
366cddb4 AV |
1842 | route->path_rec->sl = netdev_get_prio_tc_map( |
1843 | ndev->priv_flags & IFF_802_1Q_VLAN ? | |
1844 | vlan_dev_real_dev(ndev) : ndev, | |
1845 | rt_tos2priority(id_priv->tos)); | |
af7bd463 | 1846 | |
3c86aa70 EC |
1847 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
1848 | route->path_rec->rate_selector = IB_SA_EQ; | |
1849 | route->path_rec->rate = iboe_get_rate(ndev); | |
1850 | dev_put(ndev); | |
1851 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
1852 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
1853 | if (!route->path_rec->mtu) { | |
1854 | ret = -EINVAL; | |
1855 | goto err2; | |
1856 | } | |
1857 | ||
550e5ca7 NM |
1858 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1859 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
3c86aa70 EC |
1860 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1861 | work->event.status = 0; | |
1862 | ||
1863 | queue_work(cma_wq, &work->work); | |
1864 | ||
1865 | return 0; | |
1866 | ||
1867 | err2: | |
1868 | kfree(route->path_rec); | |
1869 | route->path_rec = NULL; | |
1870 | err1: | |
1871 | kfree(work); | |
1872 | return ret; | |
1873 | } | |
1874 | ||
e51060f0 SH |
1875 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
1876 | { | |
1877 | struct rdma_id_private *id_priv; | |
1878 | int ret; | |
1879 | ||
1880 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1881 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
1882 | return -EINVAL; |
1883 | ||
1884 | atomic_inc(&id_priv->refcount); | |
07ebafba TT |
1885 | switch (rdma_node_get_transport(id->device->node_type)) { |
1886 | case RDMA_TRANSPORT_IB: | |
3c86aa70 EC |
1887 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { |
1888 | case IB_LINK_LAYER_INFINIBAND: | |
1889 | ret = cma_resolve_ib_route(id_priv, timeout_ms); | |
1890 | break; | |
1891 | case IB_LINK_LAYER_ETHERNET: | |
1892 | ret = cma_resolve_iboe_route(id_priv); | |
1893 | break; | |
1894 | default: | |
1895 | ret = -ENOSYS; | |
1896 | } | |
e51060f0 | 1897 | break; |
07ebafba TT |
1898 | case RDMA_TRANSPORT_IWARP: |
1899 | ret = cma_resolve_iw_route(id_priv, timeout_ms); | |
1900 | break; | |
e51060f0 SH |
1901 | default: |
1902 | ret = -ENOSYS; | |
1903 | break; | |
1904 | } | |
1905 | if (ret) | |
1906 | goto err; | |
1907 | ||
1908 | return 0; | |
1909 | err: | |
550e5ca7 | 1910 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
1911 | cma_deref_id(id_priv); |
1912 | return ret; | |
1913 | } | |
1914 | EXPORT_SYMBOL(rdma_resolve_route); | |
1915 | ||
1916 | static int cma_bind_loopback(struct rdma_id_private *id_priv) | |
1917 | { | |
1918 | struct cma_device *cma_dev; | |
1919 | struct ib_port_attr port_attr; | |
f0ee3404 | 1920 | union ib_gid gid; |
e51060f0 SH |
1921 | u16 pkey; |
1922 | int ret; | |
1923 | u8 p; | |
1924 | ||
1925 | mutex_lock(&lock); | |
e82153b5 KK |
1926 | if (list_empty(&dev_list)) { |
1927 | ret = -ENODEV; | |
1928 | goto out; | |
1929 | } | |
e51060f0 SH |
1930 | list_for_each_entry(cma_dev, &dev_list, list) |
1931 | for (p = 1; p <= cma_dev->device->phys_port_cnt; ++p) | |
e82153b5 | 1932 | if (!ib_query_port(cma_dev->device, p, &port_attr) && |
e51060f0 SH |
1933 | port_attr.state == IB_PORT_ACTIVE) |
1934 | goto port_found; | |
1935 | ||
e82153b5 KK |
1936 | p = 1; |
1937 | cma_dev = list_entry(dev_list.next, struct cma_device, list); | |
e51060f0 SH |
1938 | |
1939 | port_found: | |
f0ee3404 | 1940 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
1941 | if (ret) |
1942 | goto out; | |
1943 | ||
1944 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
1945 | if (ret) | |
1946 | goto out; | |
1947 | ||
6f8372b6 | 1948 | id_priv->id.route.addr.dev_addr.dev_type = |
3c86aa70 | 1949 | (rdma_port_get_link_layer(cma_dev->device, p) == IB_LINK_LAYER_INFINIBAND) ? |
6f8372b6 SH |
1950 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
1951 | ||
1952 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
1953 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
1954 | id_priv->id.port_num = p; | |
1955 | cma_attach_to_dev(id_priv, cma_dev); | |
1956 | out: | |
1957 | mutex_unlock(&lock); | |
1958 | return ret; | |
1959 | } | |
1960 | ||
1961 | static void addr_handler(int status, struct sockaddr *src_addr, | |
1962 | struct rdma_dev_addr *dev_addr, void *context) | |
1963 | { | |
1964 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 1965 | struct rdma_cm_event event; |
e51060f0 | 1966 | |
a1b1b61f | 1967 | memset(&event, 0, sizeof event); |
de910bd9 | 1968 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
1969 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
1970 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 1971 | goto out; |
61a73c70 SH |
1972 | |
1973 | if (!status && !id_priv->cma_dev) | |
e51060f0 SH |
1974 | status = cma_acquire_dev(id_priv); |
1975 | ||
1976 | if (status) { | |
550e5ca7 NM |
1977 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
1978 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 1979 | goto out; |
a1b1b61f SH |
1980 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
1981 | event.status = status; | |
e51060f0 | 1982 | } else { |
e51060f0 SH |
1983 | memcpy(&id_priv->id.route.addr.src_addr, src_addr, |
1984 | ip_addr_size(src_addr)); | |
a1b1b61f | 1985 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 SH |
1986 | } |
1987 | ||
a1b1b61f | 1988 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 1989 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1990 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1991 | cma_deref_id(id_priv); |
1992 | rdma_destroy_id(&id_priv->id); | |
1993 | return; | |
1994 | } | |
1995 | out: | |
de910bd9 | 1996 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1997 | cma_deref_id(id_priv); |
1998 | } | |
1999 | ||
2000 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
2001 | { | |
2002 | struct cma_work *work; | |
6f8372b6 | 2003 | struct sockaddr *src, *dst; |
f0ee3404 | 2004 | union ib_gid gid; |
e51060f0 SH |
2005 | int ret; |
2006 | ||
2007 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2008 | if (!work) | |
2009 | return -ENOMEM; | |
2010 | ||
2011 | if (!id_priv->cma_dev) { | |
2012 | ret = cma_bind_loopback(id_priv); | |
2013 | if (ret) | |
2014 | goto err; | |
2015 | } | |
2016 | ||
6f8372b6 SH |
2017 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
2018 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 2019 | |
6f8372b6 SH |
2020 | src = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
2021 | if (cma_zero_addr(src)) { | |
2022 | dst = (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
2023 | if ((src->sa_family = dst->sa_family) == AF_INET) { | |
4e3fd7a0 AD |
2024 | ((struct sockaddr_in *)src)->sin_addr = |
2025 | ((struct sockaddr_in *)dst)->sin_addr; | |
6f8372b6 | 2026 | } else { |
4e3fd7a0 AD |
2027 | ((struct sockaddr_in6 *)src)->sin6_addr = |
2028 | ((struct sockaddr_in6 *)dst)->sin6_addr; | |
6f8372b6 | 2029 | } |
e51060f0 SH |
2030 | } |
2031 | ||
2032 | work->id = id_priv; | |
c4028958 | 2033 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2034 | work->old_state = RDMA_CM_ADDR_QUERY; |
2035 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 SH |
2036 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
2037 | queue_work(cma_wq, &work->work); | |
2038 | return 0; | |
2039 | err: | |
2040 | kfree(work); | |
2041 | return ret; | |
2042 | } | |
2043 | ||
2044 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2045 | struct sockaddr *dst_addr) | |
2046 | { | |
d14714df SH |
2047 | if (!src_addr || !src_addr->sa_family) { |
2048 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
2049 | if ((src_addr->sa_family = dst_addr->sa_family) == AF_INET6) { | |
2050 | ((struct sockaddr_in6 *) src_addr)->sin6_scope_id = | |
2051 | ((struct sockaddr_in6 *) dst_addr)->sin6_scope_id; | |
2052 | } | |
2053 | } | |
2054 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
2055 | } |
2056 | ||
2057 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2058 | struct sockaddr *dst_addr, int timeout_ms) | |
2059 | { | |
2060 | struct rdma_id_private *id_priv; | |
2061 | int ret; | |
2062 | ||
2063 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2064 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 SH |
2065 | ret = cma_bind_addr(id, src_addr, dst_addr); |
2066 | if (ret) | |
2067 | return ret; | |
2068 | } | |
2069 | ||
550e5ca7 | 2070 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
2071 | return -EINVAL; |
2072 | ||
2073 | atomic_inc(&id_priv->refcount); | |
2074 | memcpy(&id->route.addr.dst_addr, dst_addr, ip_addr_size(dst_addr)); | |
2075 | if (cma_any_addr(dst_addr)) | |
2076 | ret = cma_resolve_loopback(id_priv); | |
2077 | else | |
3f446754 | 2078 | ret = rdma_resolve_ip(&addr_client, (struct sockaddr *) &id->route.addr.src_addr, |
7a118df3 | 2079 | dst_addr, &id->route.addr.dev_addr, |
e51060f0 SH |
2080 | timeout_ms, addr_handler, id_priv); |
2081 | if (ret) | |
2082 | goto err; | |
2083 | ||
2084 | return 0; | |
2085 | err: | |
550e5ca7 | 2086 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
2087 | cma_deref_id(id_priv); |
2088 | return ret; | |
2089 | } | |
2090 | EXPORT_SYMBOL(rdma_resolve_addr); | |
2091 | ||
a9bb7912 HS |
2092 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
2093 | { | |
2094 | struct rdma_id_private *id_priv; | |
2095 | unsigned long flags; | |
2096 | int ret; | |
2097 | ||
2098 | id_priv = container_of(id, struct rdma_id_private, id); | |
2099 | spin_lock_irqsave(&id_priv->lock, flags); | |
550e5ca7 | 2100 | if (id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2101 | id_priv->reuseaddr = reuse; |
2102 | ret = 0; | |
2103 | } else { | |
2104 | ret = -EINVAL; | |
2105 | } | |
2106 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2107 | return ret; | |
2108 | } | |
2109 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
2110 | ||
68602120 SH |
2111 | int rdma_set_afonly(struct rdma_cm_id *id, int afonly) |
2112 | { | |
2113 | struct rdma_id_private *id_priv; | |
2114 | unsigned long flags; | |
2115 | int ret; | |
2116 | ||
2117 | id_priv = container_of(id, struct rdma_id_private, id); | |
2118 | spin_lock_irqsave(&id_priv->lock, flags); | |
2119 | if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { | |
2120 | id_priv->options |= (1 << CMA_OPTION_AFONLY); | |
2121 | id_priv->afonly = afonly; | |
2122 | ret = 0; | |
2123 | } else { | |
2124 | ret = -EINVAL; | |
2125 | } | |
2126 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2127 | return ret; | |
2128 | } | |
2129 | EXPORT_SYMBOL(rdma_set_afonly); | |
2130 | ||
e51060f0 SH |
2131 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
2132 | struct rdma_id_private *id_priv) | |
2133 | { | |
2134 | struct sockaddr_in *sin; | |
2135 | ||
2136 | sin = (struct sockaddr_in *) &id_priv->id.route.addr.src_addr; | |
2137 | sin->sin_port = htons(bind_list->port); | |
2138 | id_priv->bind_list = bind_list; | |
2139 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
2140 | } | |
2141 | ||
2142 | static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, | |
2143 | unsigned short snum) | |
2144 | { | |
2145 | struct rdma_bind_list *bind_list; | |
3b069c5d | 2146 | int ret; |
e51060f0 | 2147 | |
cb164b8c | 2148 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
2149 | if (!bind_list) |
2150 | return -ENOMEM; | |
2151 | ||
3b069c5d TH |
2152 | ret = idr_alloc(ps, bind_list, snum, snum + 1, GFP_KERNEL); |
2153 | if (ret < 0) | |
2154 | goto err; | |
aedec080 SH |
2155 | |
2156 | bind_list->ps = ps; | |
3b069c5d | 2157 | bind_list->port = (unsigned short)ret; |
aedec080 SH |
2158 | cma_bind_port(bind_list, id_priv); |
2159 | return 0; | |
3b069c5d | 2160 | err: |
aedec080 | 2161 | kfree(bind_list); |
3b069c5d | 2162 | return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; |
aedec080 | 2163 | } |
e51060f0 | 2164 | |
aedec080 SH |
2165 | static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv) |
2166 | { | |
5d7220e8 TH |
2167 | static unsigned int last_used_port; |
2168 | int low, high, remaining; | |
2169 | unsigned int rover; | |
e51060f0 | 2170 | |
227b60f5 | 2171 | inet_get_local_port_range(&low, &high); |
5d7220e8 TH |
2172 | remaining = (high - low) + 1; |
2173 | rover = net_random() % remaining + low; | |
2174 | retry: | |
2175 | if (last_used_port != rover && | |
2176 | !idr_find(ps, (unsigned short) rover)) { | |
2177 | int ret = cma_alloc_port(ps, id_priv, rover); | |
2178 | /* | |
2179 | * Remember previously used port number in order to avoid | |
2180 | * re-using same port immediately after it is closed. | |
2181 | */ | |
2182 | if (!ret) | |
2183 | last_used_port = rover; | |
2184 | if (ret != -EADDRNOTAVAIL) | |
2185 | return ret; | |
e51060f0 | 2186 | } |
5d7220e8 TH |
2187 | if (--remaining) { |
2188 | rover++; | |
2189 | if ((rover < low) || (rover > high)) | |
2190 | rover = low; | |
2191 | goto retry; | |
2192 | } | |
2193 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
2194 | } |
2195 | ||
a9bb7912 HS |
2196 | /* |
2197 | * Check that the requested port is available. This is called when trying to | |
2198 | * bind to a specific port, or when trying to listen on a bound port. In | |
2199 | * the latter case, the provided id_priv may already be on the bind_list, but | |
2200 | * we still need to check that it's okay to start listening. | |
2201 | */ | |
2202 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
2203 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
2204 | { |
2205 | struct rdma_id_private *cur_id; | |
43b752da | 2206 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 2207 | |
43b752da | 2208 | addr = (struct sockaddr *) &id_priv->id.route.addr.src_addr; |
b67bfe0d | 2209 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { |
a9bb7912 HS |
2210 | if (id_priv == cur_id) |
2211 | continue; | |
3cd96564 | 2212 | |
5b0ec991 SH |
2213 | if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && |
2214 | cur_id->reuseaddr) | |
2215 | continue; | |
e51060f0 | 2216 | |
5b0ec991 SH |
2217 | cur_addr = (struct sockaddr *) &cur_id->id.route.addr.src_addr; |
2218 | if (id_priv->afonly && cur_id->afonly && | |
2219 | (addr->sa_family != cur_addr->sa_family)) | |
2220 | continue; | |
2221 | ||
2222 | if (cma_any_addr(addr) || cma_any_addr(cur_addr)) | |
2223 | return -EADDRNOTAVAIL; | |
2224 | ||
2225 | if (!cma_addr_cmp(addr, cur_addr)) | |
2226 | return -EADDRINUSE; | |
a9bb7912 | 2227 | } |
e51060f0 SH |
2228 | return 0; |
2229 | } | |
2230 | ||
a9bb7912 HS |
2231 | static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv) |
2232 | { | |
2233 | struct rdma_bind_list *bind_list; | |
2234 | unsigned short snum; | |
2235 | int ret; | |
2236 | ||
2237 | snum = ntohs(cma_port((struct sockaddr *) &id_priv->id.route.addr.src_addr)); | |
2238 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) | |
2239 | return -EACCES; | |
2240 | ||
2241 | bind_list = idr_find(ps, snum); | |
2242 | if (!bind_list) { | |
2243 | ret = cma_alloc_port(ps, id_priv, snum); | |
2244 | } else { | |
2245 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
2246 | if (!ret) | |
2247 | cma_bind_port(bind_list, id_priv); | |
2248 | } | |
2249 | return ret; | |
2250 | } | |
2251 | ||
2252 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
2253 | { | |
2254 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
2255 | int ret = 0; | |
2256 | ||
2257 | mutex_lock(&lock); | |
2258 | if (bind_list->owners.first->next) | |
2259 | ret = cma_check_port(bind_list, id_priv, 0); | |
2260 | mutex_unlock(&lock); | |
2261 | return ret; | |
2262 | } | |
2263 | ||
e51060f0 SH |
2264 | static int cma_get_port(struct rdma_id_private *id_priv) |
2265 | { | |
2266 | struct idr *ps; | |
2267 | int ret; | |
2268 | ||
2269 | switch (id_priv->id.ps) { | |
2270 | case RDMA_PS_SDP: | |
2271 | ps = &sdp_ps; | |
2272 | break; | |
2273 | case RDMA_PS_TCP: | |
2274 | ps = &tcp_ps; | |
2275 | break; | |
628e5f6d SH |
2276 | case RDMA_PS_UDP: |
2277 | ps = &udp_ps; | |
2278 | break; | |
c8f6a362 SH |
2279 | case RDMA_PS_IPOIB: |
2280 | ps = &ipoib_ps; | |
2281 | break; | |
2d2e9415 SH |
2282 | case RDMA_PS_IB: |
2283 | ps = &ib_ps; | |
2284 | break; | |
e51060f0 SH |
2285 | default: |
2286 | return -EPROTONOSUPPORT; | |
2287 | } | |
2288 | ||
2289 | mutex_lock(&lock); | |
3f446754 | 2290 | if (cma_any_port((struct sockaddr *) &id_priv->id.route.addr.src_addr)) |
aedec080 | 2291 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2292 | else |
2293 | ret = cma_use_port(ps, id_priv); | |
2294 | mutex_unlock(&lock); | |
2295 | ||
2296 | return ret; | |
2297 | } | |
2298 | ||
d14714df SH |
2299 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
2300 | struct sockaddr *addr) | |
2301 | { | |
d90f9b35 | 2302 | #if IS_ENABLED(CONFIG_IPV6) |
d14714df SH |
2303 | struct sockaddr_in6 *sin6; |
2304 | ||
2305 | if (addr->sa_family != AF_INET6) | |
2306 | return 0; | |
2307 | ||
2308 | sin6 = (struct sockaddr_in6 *) addr; | |
2309 | if ((ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) && | |
2310 | !sin6->sin6_scope_id) | |
2311 | return -EINVAL; | |
2312 | ||
2313 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
2314 | #endif | |
2315 | return 0; | |
2316 | } | |
2317 | ||
a9bb7912 HS |
2318 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
2319 | { | |
2320 | struct rdma_id_private *id_priv; | |
2321 | int ret; | |
2322 | ||
2323 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2324 | if (id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2325 | ((struct sockaddr *) &id->route.addr.src_addr)->sa_family = AF_INET; |
2326 | ret = rdma_bind_addr(id, (struct sockaddr *) &id->route.addr.src_addr); | |
2327 | if (ret) | |
2328 | return ret; | |
2329 | } | |
2330 | ||
550e5ca7 | 2331 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
2332 | return -EINVAL; |
2333 | ||
2334 | if (id_priv->reuseaddr) { | |
2335 | ret = cma_bind_listen(id_priv); | |
2336 | if (ret) | |
2337 | goto err; | |
2338 | } | |
2339 | ||
2340 | id_priv->backlog = backlog; | |
2341 | if (id->device) { | |
2342 | switch (rdma_node_get_transport(id->device->node_type)) { | |
2343 | case RDMA_TRANSPORT_IB: | |
2344 | ret = cma_ib_listen(id_priv); | |
2345 | if (ret) | |
2346 | goto err; | |
2347 | break; | |
2348 | case RDMA_TRANSPORT_IWARP: | |
2349 | ret = cma_iw_listen(id_priv, backlog); | |
2350 | if (ret) | |
2351 | goto err; | |
2352 | break; | |
2353 | default: | |
2354 | ret = -ENOSYS; | |
2355 | goto err; | |
2356 | } | |
2357 | } else | |
2358 | cma_listen_on_all(id_priv); | |
2359 | ||
2360 | return 0; | |
2361 | err: | |
2362 | id_priv->backlog = 0; | |
550e5ca7 | 2363 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
2364 | return ret; |
2365 | } | |
2366 | EXPORT_SYMBOL(rdma_listen); | |
2367 | ||
e51060f0 SH |
2368 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
2369 | { | |
2370 | struct rdma_id_private *id_priv; | |
2371 | int ret; | |
2372 | ||
1f5175ad | 2373 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6) |
e51060f0 SH |
2374 | return -EAFNOSUPPORT; |
2375 | ||
2376 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2377 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
2378 | return -EINVAL; |
2379 | ||
d14714df SH |
2380 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
2381 | if (ret) | |
2382 | goto err1; | |
2383 | ||
8523c048 | 2384 | if (!cma_any_addr(addr)) { |
e51060f0 | 2385 | ret = rdma_translate_ip(addr, &id->route.addr.dev_addr); |
e51060f0 | 2386 | if (ret) |
255d0c14 KK |
2387 | goto err1; |
2388 | ||
255d0c14 | 2389 | ret = cma_acquire_dev(id_priv); |
255d0c14 KK |
2390 | if (ret) |
2391 | goto err1; | |
e51060f0 SH |
2392 | } |
2393 | ||
2394 | memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr)); | |
68602120 SH |
2395 | if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { |
2396 | if (addr->sa_family == AF_INET) | |
2397 | id_priv->afonly = 1; | |
5b0ec991 | 2398 | #if IS_ENABLED(CONFIG_IPV6) |
68602120 SH |
2399 | else if (addr->sa_family == AF_INET6) |
2400 | id_priv->afonly = init_net.ipv6.sysctl.bindv6only; | |
5b0ec991 | 2401 | #endif |
68602120 | 2402 | } |
e51060f0 SH |
2403 | ret = cma_get_port(id_priv); |
2404 | if (ret) | |
255d0c14 | 2405 | goto err2; |
e51060f0 SH |
2406 | |
2407 | return 0; | |
255d0c14 | 2408 | err2: |
a396d43a SH |
2409 | if (id_priv->cma_dev) |
2410 | cma_release_dev(id_priv); | |
255d0c14 | 2411 | err1: |
550e5ca7 | 2412 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
2413 | return ret; |
2414 | } | |
2415 | EXPORT_SYMBOL(rdma_bind_addr); | |
2416 | ||
2417 | static int cma_format_hdr(void *hdr, enum rdma_port_space ps, | |
2418 | struct rdma_route *route) | |
2419 | { | |
e51060f0 SH |
2420 | struct cma_hdr *cma_hdr; |
2421 | struct sdp_hh *sdp_hdr; | |
2422 | ||
1f5175ad AS |
2423 | if (route->addr.src_addr.ss_family == AF_INET) { |
2424 | struct sockaddr_in *src4, *dst4; | |
2425 | ||
2426 | src4 = (struct sockaddr_in *) &route->addr.src_addr; | |
2427 | dst4 = (struct sockaddr_in *) &route->addr.dst_addr; | |
2428 | ||
2429 | switch (ps) { | |
2430 | case RDMA_PS_SDP: | |
2431 | sdp_hdr = hdr; | |
2432 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2433 | return -EINVAL; | |
2434 | sdp_set_ip_ver(sdp_hdr, 4); | |
2435 | sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2436 | sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2437 | sdp_hdr->port = src4->sin_port; | |
2438 | break; | |
2439 | default: | |
2440 | cma_hdr = hdr; | |
2441 | cma_hdr->cma_version = CMA_VERSION; | |
2442 | cma_set_ip_ver(cma_hdr, 4); | |
2443 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2444 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2445 | cma_hdr->port = src4->sin_port; | |
2446 | break; | |
2447 | } | |
2448 | } else { | |
2449 | struct sockaddr_in6 *src6, *dst6; | |
2450 | ||
2451 | src6 = (struct sockaddr_in6 *) &route->addr.src_addr; | |
2452 | dst6 = (struct sockaddr_in6 *) &route->addr.dst_addr; | |
2453 | ||
2454 | switch (ps) { | |
2455 | case RDMA_PS_SDP: | |
2456 | sdp_hdr = hdr; | |
2457 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2458 | return -EINVAL; | |
2459 | sdp_set_ip_ver(sdp_hdr, 6); | |
2460 | sdp_hdr->src_addr.ip6 = src6->sin6_addr; | |
2461 | sdp_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2462 | sdp_hdr->port = src6->sin6_port; | |
2463 | break; | |
2464 | default: | |
2465 | cma_hdr = hdr; | |
2466 | cma_hdr->cma_version = CMA_VERSION; | |
2467 | cma_set_ip_ver(cma_hdr, 6); | |
2468 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
2469 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2470 | cma_hdr->port = src6->sin6_port; | |
2471 | break; | |
2472 | } | |
e51060f0 SH |
2473 | } |
2474 | return 0; | |
2475 | } | |
2476 | ||
628e5f6d SH |
2477 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
2478 | struct ib_cm_event *ib_event) | |
2479 | { | |
2480 | struct rdma_id_private *id_priv = cm_id->context; | |
2481 | struct rdma_cm_event event; | |
2482 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
2483 | int ret = 0; | |
2484 | ||
550e5ca7 | 2485 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
8aa08602 | 2486 | return 0; |
628e5f6d | 2487 | |
8aa08602 | 2488 | memset(&event, 0, sizeof event); |
628e5f6d SH |
2489 | switch (ib_event->event) { |
2490 | case IB_CM_SIDR_REQ_ERROR: | |
2491 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2492 | event.status = -ETIMEDOUT; | |
2493 | break; | |
2494 | case IB_CM_SIDR_REP_RECEIVED: | |
2495 | event.param.ud.private_data = ib_event->private_data; | |
2496 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
2497 | if (rep->status != IB_SIDR_SUCCESS) { | |
2498 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2499 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
2500 | break; | |
2501 | } | |
d2ca39f2 YE |
2502 | ret = cma_set_qkey(id_priv); |
2503 | if (ret) { | |
2504 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
2505 | event.status = -EINVAL; | |
2506 | break; | |
2507 | } | |
c8f6a362 | 2508 | if (id_priv->qkey != rep->qkey) { |
628e5f6d SH |
2509 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
2510 | event.status = -EINVAL; | |
2511 | break; | |
2512 | } | |
2513 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
2514 | id_priv->id.route.path_rec, | |
2515 | &event.param.ud.ah_attr); | |
2516 | event.param.ud.qp_num = rep->qpn; | |
2517 | event.param.ud.qkey = rep->qkey; | |
2518 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
2519 | event.status = 0; | |
2520 | break; | |
2521 | default: | |
468f2239 | 2522 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
2523 | ib_event->event); |
2524 | goto out; | |
2525 | } | |
2526 | ||
2527 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2528 | if (ret) { | |
2529 | /* Destroy the CM ID by returning a non-zero value. */ | |
2530 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 2531 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2532 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2533 | rdma_destroy_id(&id_priv->id); |
2534 | return ret; | |
2535 | } | |
2536 | out: | |
de910bd9 | 2537 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2538 | return ret; |
2539 | } | |
2540 | ||
2541 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
2542 | struct rdma_conn_param *conn_param) | |
2543 | { | |
2544 | struct ib_cm_sidr_req_param req; | |
2545 | struct rdma_route *route; | |
0c9361fc | 2546 | struct ib_cm_id *id; |
628e5f6d SH |
2547 | int ret; |
2548 | ||
2549 | req.private_data_len = sizeof(struct cma_hdr) + | |
2550 | conn_param->private_data_len; | |
04ded167 SH |
2551 | if (req.private_data_len < conn_param->private_data_len) |
2552 | return -EINVAL; | |
2553 | ||
628e5f6d SH |
2554 | req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
2555 | if (!req.private_data) | |
2556 | return -ENOMEM; | |
2557 | ||
2558 | if (conn_param->private_data && conn_param->private_data_len) | |
2559 | memcpy((void *) req.private_data + sizeof(struct cma_hdr), | |
2560 | conn_param->private_data, conn_param->private_data_len); | |
2561 | ||
2562 | route = &id_priv->id.route; | |
2563 | ret = cma_format_hdr((void *) req.private_data, id_priv->id.ps, route); | |
2564 | if (ret) | |
2565 | goto out; | |
2566 | ||
0c9361fc JM |
2567 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
2568 | id_priv); | |
2569 | if (IS_ERR(id)) { | |
2570 | ret = PTR_ERR(id); | |
628e5f6d SH |
2571 | goto out; |
2572 | } | |
0c9361fc | 2573 | id_priv->cm_id.ib = id; |
628e5f6d SH |
2574 | |
2575 | req.path = route->path_rec; | |
2576 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2577 | (struct sockaddr *) &route->addr.dst_addr); |
628e5f6d SH |
2578 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
2579 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2580 | ||
2581 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
2582 | if (ret) { | |
2583 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2584 | id_priv->cm_id.ib = NULL; | |
2585 | } | |
2586 | out: | |
2587 | kfree(req.private_data); | |
2588 | return ret; | |
2589 | } | |
2590 | ||
e51060f0 SH |
2591 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
2592 | struct rdma_conn_param *conn_param) | |
2593 | { | |
2594 | struct ib_cm_req_param req; | |
2595 | struct rdma_route *route; | |
2596 | void *private_data; | |
0c9361fc | 2597 | struct ib_cm_id *id; |
e51060f0 SH |
2598 | int offset, ret; |
2599 | ||
2600 | memset(&req, 0, sizeof req); | |
2601 | offset = cma_user_data_offset(id_priv->id.ps); | |
2602 | req.private_data_len = offset + conn_param->private_data_len; | |
04ded167 SH |
2603 | if (req.private_data_len < conn_param->private_data_len) |
2604 | return -EINVAL; | |
2605 | ||
e51060f0 SH |
2606 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
2607 | if (!private_data) | |
2608 | return -ENOMEM; | |
2609 | ||
2610 | if (conn_param->private_data && conn_param->private_data_len) | |
2611 | memcpy(private_data + offset, conn_param->private_data, | |
2612 | conn_param->private_data_len); | |
2613 | ||
0c9361fc JM |
2614 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
2615 | if (IS_ERR(id)) { | |
2616 | ret = PTR_ERR(id); | |
e51060f0 SH |
2617 | goto out; |
2618 | } | |
0c9361fc | 2619 | id_priv->cm_id.ib = id; |
e51060f0 SH |
2620 | |
2621 | route = &id_priv->id.route; | |
2622 | ret = cma_format_hdr(private_data, id_priv->id.ps, route); | |
2623 | if (ret) | |
2624 | goto out; | |
2625 | req.private_data = private_data; | |
2626 | ||
2627 | req.primary_path = &route->path_rec[0]; | |
2628 | if (route->num_paths == 2) | |
2629 | req.alternate_path = &route->path_rec[1]; | |
2630 | ||
2631 | req.service_id = cma_get_service_id(id_priv->id.ps, | |
3f446754 | 2632 | (struct sockaddr *) &route->addr.dst_addr); |
e51060f0 | 2633 | req.qp_num = id_priv->qp_num; |
18c441a6 | 2634 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
2635 | req.starting_psn = id_priv->seq_num; |
2636 | req.responder_resources = conn_param->responder_resources; | |
2637 | req.initiator_depth = conn_param->initiator_depth; | |
2638 | req.flow_control = conn_param->flow_control; | |
4ede178a SH |
2639 | req.retry_count = min_t(u8, 7, conn_param->retry_count); |
2640 | req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); | |
e51060f0 SH |
2641 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; |
2642 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2643 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2644 | req.srq = id_priv->srq ? 1 : 0; | |
2645 | ||
2646 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
2647 | out: | |
0c9361fc JM |
2648 | if (ret && !IS_ERR(id)) { |
2649 | ib_destroy_cm_id(id); | |
675a027c KK |
2650 | id_priv->cm_id.ib = NULL; |
2651 | } | |
2652 | ||
e51060f0 SH |
2653 | kfree(private_data); |
2654 | return ret; | |
2655 | } | |
2656 | ||
07ebafba TT |
2657 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
2658 | struct rdma_conn_param *conn_param) | |
2659 | { | |
2660 | struct iw_cm_id *cm_id; | |
2661 | struct sockaddr_in* sin; | |
2662 | int ret; | |
2663 | struct iw_cm_conn_param iw_param; | |
2664 | ||
2665 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
2666 | if (IS_ERR(cm_id)) |
2667 | return PTR_ERR(cm_id); | |
07ebafba TT |
2668 | |
2669 | id_priv->cm_id.iw = cm_id; | |
2670 | ||
2671 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.src_addr; | |
2672 | cm_id->local_addr = *sin; | |
2673 | ||
2674 | sin = (struct sockaddr_in*) &id_priv->id.route.addr.dst_addr; | |
2675 | cm_id->remote_addr = *sin; | |
2676 | ||
5851bb89 | 2677 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
2678 | if (ret) |
2679 | goto out; | |
07ebafba | 2680 | |
f45ee80e HS |
2681 | if (conn_param) { |
2682 | iw_param.ord = conn_param->initiator_depth; | |
2683 | iw_param.ird = conn_param->responder_resources; | |
2684 | iw_param.private_data = conn_param->private_data; | |
2685 | iw_param.private_data_len = conn_param->private_data_len; | |
2686 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
2687 | } else { | |
2688 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 2689 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 2690 | } |
07ebafba TT |
2691 | ret = iw_cm_connect(cm_id, &iw_param); |
2692 | out: | |
0c9361fc | 2693 | if (ret) { |
675a027c KK |
2694 | iw_destroy_cm_id(cm_id); |
2695 | id_priv->cm_id.iw = NULL; | |
2696 | } | |
07ebafba TT |
2697 | return ret; |
2698 | } | |
2699 | ||
e51060f0 SH |
2700 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2701 | { | |
2702 | struct rdma_id_private *id_priv; | |
2703 | int ret; | |
2704 | ||
2705 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2706 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
2707 | return -EINVAL; |
2708 | ||
2709 | if (!id->qp) { | |
2710 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2711 | id_priv->srq = conn_param->srq; |
2712 | } | |
2713 | ||
07ebafba TT |
2714 | switch (rdma_node_get_transport(id->device->node_type)) { |
2715 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 2716 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
2717 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
2718 | else | |
2719 | ret = cma_connect_ib(id_priv, conn_param); | |
e51060f0 | 2720 | break; |
07ebafba TT |
2721 | case RDMA_TRANSPORT_IWARP: |
2722 | ret = cma_connect_iw(id_priv, conn_param); | |
2723 | break; | |
e51060f0 SH |
2724 | default: |
2725 | ret = -ENOSYS; | |
2726 | break; | |
2727 | } | |
2728 | if (ret) | |
2729 | goto err; | |
2730 | ||
2731 | return 0; | |
2732 | err: | |
550e5ca7 | 2733 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
2734 | return ret; |
2735 | } | |
2736 | EXPORT_SYMBOL(rdma_connect); | |
2737 | ||
2738 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
2739 | struct rdma_conn_param *conn_param) | |
2740 | { | |
2741 | struct ib_cm_rep_param rep; | |
5851bb89 | 2742 | int ret; |
0fe313b0 | 2743 | |
5851bb89 SH |
2744 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
2745 | if (ret) | |
2746 | goto out; | |
0fe313b0 | 2747 | |
5851bb89 SH |
2748 | ret = cma_modify_qp_rts(id_priv, conn_param); |
2749 | if (ret) | |
2750 | goto out; | |
e51060f0 SH |
2751 | |
2752 | memset(&rep, 0, sizeof rep); | |
2753 | rep.qp_num = id_priv->qp_num; | |
2754 | rep.starting_psn = id_priv->seq_num; | |
2755 | rep.private_data = conn_param->private_data; | |
2756 | rep.private_data_len = conn_param->private_data_len; | |
2757 | rep.responder_resources = conn_param->responder_resources; | |
2758 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
2759 | rep.failover_accepted = 0; |
2760 | rep.flow_control = conn_param->flow_control; | |
4ede178a | 2761 | rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); |
e51060f0 SH |
2762 | rep.srq = id_priv->srq ? 1 : 0; |
2763 | ||
0fe313b0 SH |
2764 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
2765 | out: | |
2766 | return ret; | |
e51060f0 SH |
2767 | } |
2768 | ||
07ebafba TT |
2769 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
2770 | struct rdma_conn_param *conn_param) | |
2771 | { | |
2772 | struct iw_cm_conn_param iw_param; | |
2773 | int ret; | |
2774 | ||
5851bb89 | 2775 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
2776 | if (ret) |
2777 | return ret; | |
2778 | ||
2779 | iw_param.ord = conn_param->initiator_depth; | |
2780 | iw_param.ird = conn_param->responder_resources; | |
2781 | iw_param.private_data = conn_param->private_data; | |
2782 | iw_param.private_data_len = conn_param->private_data_len; | |
2783 | if (id_priv->id.qp) { | |
2784 | iw_param.qpn = id_priv->qp_num; | |
2785 | } else | |
2786 | iw_param.qpn = conn_param->qp_num; | |
2787 | ||
2788 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
2789 | } | |
2790 | ||
628e5f6d SH |
2791 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
2792 | enum ib_cm_sidr_status status, | |
2793 | const void *private_data, int private_data_len) | |
2794 | { | |
2795 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 2796 | int ret; |
628e5f6d SH |
2797 | |
2798 | memset(&rep, 0, sizeof rep); | |
2799 | rep.status = status; | |
2800 | if (status == IB_SIDR_SUCCESS) { | |
d2ca39f2 YE |
2801 | ret = cma_set_qkey(id_priv); |
2802 | if (ret) | |
2803 | return ret; | |
628e5f6d | 2804 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 2805 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
2806 | } |
2807 | rep.private_data = private_data; | |
2808 | rep.private_data_len = private_data_len; | |
2809 | ||
2810 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
2811 | } | |
2812 | ||
e51060f0 SH |
2813 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2814 | { | |
2815 | struct rdma_id_private *id_priv; | |
2816 | int ret; | |
2817 | ||
2818 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d NM |
2819 | |
2820 | id_priv->owner = task_pid_nr(current); | |
2821 | ||
550e5ca7 | 2822 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
2823 | return -EINVAL; |
2824 | ||
2825 | if (!id->qp && conn_param) { | |
2826 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2827 | id_priv->srq = conn_param->srq; |
2828 | } | |
2829 | ||
07ebafba TT |
2830 | switch (rdma_node_get_transport(id->device->node_type)) { |
2831 | case RDMA_TRANSPORT_IB: | |
f45ee80e HS |
2832 | if (id->qp_type == IB_QPT_UD) { |
2833 | if (conn_param) | |
2834 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
2835 | conn_param->private_data, | |
2836 | conn_param->private_data_len); | |
2837 | else | |
2838 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
2839 | NULL, 0); | |
2840 | } else { | |
2841 | if (conn_param) | |
2842 | ret = cma_accept_ib(id_priv, conn_param); | |
2843 | else | |
2844 | ret = cma_rep_recv(id_priv); | |
2845 | } | |
e51060f0 | 2846 | break; |
07ebafba TT |
2847 | case RDMA_TRANSPORT_IWARP: |
2848 | ret = cma_accept_iw(id_priv, conn_param); | |
2849 | break; | |
e51060f0 SH |
2850 | default: |
2851 | ret = -ENOSYS; | |
2852 | break; | |
2853 | } | |
2854 | ||
2855 | if (ret) | |
2856 | goto reject; | |
2857 | ||
2858 | return 0; | |
2859 | reject: | |
c5483388 | 2860 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
2861 | rdma_reject(id, NULL, 0); |
2862 | return ret; | |
2863 | } | |
2864 | EXPORT_SYMBOL(rdma_accept); | |
2865 | ||
0fe313b0 SH |
2866 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
2867 | { | |
2868 | struct rdma_id_private *id_priv; | |
2869 | int ret; | |
2870 | ||
2871 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2872 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
2873 | return -EINVAL; |
2874 | ||
2875 | switch (id->device->node_type) { | |
2876 | case RDMA_NODE_IB_CA: | |
2877 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
2878 | break; | |
2879 | default: | |
2880 | ret = 0; | |
2881 | break; | |
2882 | } | |
2883 | return ret; | |
2884 | } | |
2885 | EXPORT_SYMBOL(rdma_notify); | |
2886 | ||
e51060f0 SH |
2887 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
2888 | u8 private_data_len) | |
2889 | { | |
2890 | struct rdma_id_private *id_priv; | |
2891 | int ret; | |
2892 | ||
2893 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2894 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
2895 | return -EINVAL; |
2896 | ||
07ebafba TT |
2897 | switch (rdma_node_get_transport(id->device->node_type)) { |
2898 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 2899 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
2900 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, |
2901 | private_data, private_data_len); | |
2902 | else | |
2903 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
2904 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
2905 | 0, private_data, private_data_len); | |
e51060f0 | 2906 | break; |
07ebafba TT |
2907 | case RDMA_TRANSPORT_IWARP: |
2908 | ret = iw_cm_reject(id_priv->cm_id.iw, | |
2909 | private_data, private_data_len); | |
2910 | break; | |
e51060f0 SH |
2911 | default: |
2912 | ret = -ENOSYS; | |
2913 | break; | |
2914 | } | |
2915 | return ret; | |
2916 | } | |
2917 | EXPORT_SYMBOL(rdma_reject); | |
2918 | ||
2919 | int rdma_disconnect(struct rdma_cm_id *id) | |
2920 | { | |
2921 | struct rdma_id_private *id_priv; | |
2922 | int ret; | |
2923 | ||
2924 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2925 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
2926 | return -EINVAL; |
2927 | ||
07ebafba TT |
2928 | switch (rdma_node_get_transport(id->device->node_type)) { |
2929 | case RDMA_TRANSPORT_IB: | |
c5483388 | 2930 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
2931 | if (ret) |
2932 | goto out; | |
e51060f0 SH |
2933 | /* Initiate or respond to a disconnect. */ |
2934 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
2935 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
2936 | break; | |
07ebafba TT |
2937 | case RDMA_TRANSPORT_IWARP: |
2938 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); | |
2939 | break; | |
e51060f0 | 2940 | default: |
07ebafba | 2941 | ret = -EINVAL; |
e51060f0 SH |
2942 | break; |
2943 | } | |
2944 | out: | |
2945 | return ret; | |
2946 | } | |
2947 | EXPORT_SYMBOL(rdma_disconnect); | |
2948 | ||
c8f6a362 SH |
2949 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
2950 | { | |
2951 | struct rdma_id_private *id_priv; | |
2952 | struct cma_multicast *mc = multicast->context; | |
2953 | struct rdma_cm_event event; | |
2954 | int ret; | |
2955 | ||
2956 | id_priv = mc->id_priv; | |
550e5ca7 NM |
2957 | if (cma_disable_callback(id_priv, RDMA_CM_ADDR_BOUND) && |
2958 | cma_disable_callback(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
8aa08602 | 2959 | return 0; |
c8f6a362 | 2960 | |
c5483388 | 2961 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
2962 | if (!status && id_priv->id.qp) |
2963 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
46ea5061 | 2964 | be16_to_cpu(multicast->rec.mlid)); |
c5483388 | 2965 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
2966 | |
2967 | memset(&event, 0, sizeof event); | |
2968 | event.status = status; | |
2969 | event.param.ud.private_data = mc->context; | |
2970 | if (!status) { | |
2971 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
2972 | ib_init_ah_from_mcmember(id_priv->id.device, | |
2973 | id_priv->id.port_num, &multicast->rec, | |
2974 | &event.param.ud.ah_attr); | |
2975 | event.param.ud.qp_num = 0xFFFFFF; | |
2976 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
2977 | } else | |
2978 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
2979 | ||
2980 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2981 | if (ret) { | |
550e5ca7 | 2982 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2983 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2984 | rdma_destroy_id(&id_priv->id); |
2985 | return 0; | |
2986 | } | |
8aa08602 | 2987 | |
de910bd9 | 2988 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
2989 | return 0; |
2990 | } | |
2991 | ||
2992 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
2993 | struct sockaddr *addr, union ib_gid *mgid) | |
2994 | { | |
2995 | unsigned char mc_map[MAX_ADDR_LEN]; | |
2996 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
2997 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
2998 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
2999 | ||
3000 | if (cma_any_addr(addr)) { | |
3001 | memset(mgid, 0, sizeof *mgid); | |
3002 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 3003 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
3004 | 0xFF10A01B)) { |
3005 | /* IPv6 address is an SA assigned MGID. */ | |
3006 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
e2e62697 JG |
3007 | } else if ((addr->sa_family == AF_INET6)) { |
3008 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
3009 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3010 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
3011 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 3012 | } else { |
a9e527e3 | 3013 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
3014 | if (id_priv->id.ps == RDMA_PS_UDP) |
3015 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
3016 | *mgid = *(union ib_gid *) (mc_map + 4); |
3017 | } | |
3018 | } | |
3019 | ||
3020 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
3021 | struct cma_multicast *mc) | |
3022 | { | |
3023 | struct ib_sa_mcmember_rec rec; | |
3024 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3025 | ib_sa_comp_mask comp_mask; | |
3026 | int ret; | |
3027 | ||
3028 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
3029 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
3030 | &rec.mgid, &rec); | |
3031 | if (ret) | |
3032 | return ret; | |
3033 | ||
3f446754 | 3034 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
c8f6a362 SH |
3035 | if (id_priv->id.ps == RDMA_PS_UDP) |
3036 | rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
6f8372b6 | 3037 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 SH |
3038 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
3039 | rec.join_state = 1; | |
3040 | ||
3041 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
3042 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
3043 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
3044 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
3045 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
3046 | ||
84adeee9 YE |
3047 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
3048 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2a22fb8c DB |
3049 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
3050 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
3051 | IB_SA_MCMEMBER_REC_MTU | | |
3052 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
84adeee9 | 3053 | |
c8f6a362 SH |
3054 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
3055 | id_priv->id.port_num, &rec, | |
3056 | comp_mask, GFP_KERNEL, | |
3057 | cma_ib_mc_handler, mc); | |
4e289045 | 3058 | return PTR_RET(mc->multicast.ib); |
c8f6a362 SH |
3059 | } |
3060 | ||
3c86aa70 EC |
3061 | static void iboe_mcast_work_handler(struct work_struct *work) |
3062 | { | |
3063 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
3064 | struct cma_multicast *mc = mw->mc; | |
3065 | struct ib_sa_multicast *m = mc->multicast.ib; | |
3066 | ||
3067 | mc->multicast.ib->context = mc; | |
3068 | cma_ib_mc_handler(0, m); | |
3069 | kref_put(&mc->mcref, release_mc); | |
3070 | kfree(mw); | |
3071 | } | |
3072 | ||
3073 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) | |
3074 | { | |
3075 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
3076 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
3077 | ||
3078 | if (cma_any_addr(addr)) { | |
3079 | memset(mgid, 0, sizeof *mgid); | |
3080 | } else if (addr->sa_family == AF_INET6) { | |
3081 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
3082 | } else { | |
3083 | mgid->raw[0] = 0xff; | |
3084 | mgid->raw[1] = 0x0e; | |
3085 | mgid->raw[2] = 0; | |
3086 | mgid->raw[3] = 0; | |
3087 | mgid->raw[4] = 0; | |
3088 | mgid->raw[5] = 0; | |
3089 | mgid->raw[6] = 0; | |
3090 | mgid->raw[7] = 0; | |
3091 | mgid->raw[8] = 0; | |
3092 | mgid->raw[9] = 0; | |
3093 | mgid->raw[10] = 0xff; | |
3094 | mgid->raw[11] = 0xff; | |
3095 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
3096 | } | |
3097 | } | |
3098 | ||
3099 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
3100 | struct cma_multicast *mc) | |
3101 | { | |
3102 | struct iboe_mcast_work *work; | |
3103 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3104 | int err; | |
3105 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; | |
3106 | struct net_device *ndev = NULL; | |
3107 | ||
3108 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
3109 | return -EINVAL; | |
3110 | ||
3111 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3112 | if (!work) | |
3113 | return -ENOMEM; | |
3114 | ||
3115 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
3116 | if (!mc->multicast.ib) { | |
3117 | err = -ENOMEM; | |
3118 | goto out1; | |
3119 | } | |
3120 | ||
3121 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); | |
3122 | ||
3123 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
3124 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3125 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
3126 | ||
3127 | if (dev_addr->bound_dev_if) | |
3128 | ndev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3129 | if (!ndev) { | |
3130 | err = -ENODEV; | |
3131 | goto out2; | |
3132 | } | |
3133 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
3134 | mc->multicast.ib->rec.hop_limit = 1; | |
3135 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
3136 | dev_put(ndev); | |
3137 | if (!mc->multicast.ib->rec.mtu) { | |
3138 | err = -EINVAL; | |
3139 | goto out2; | |
3140 | } | |
3141 | iboe_addr_get_sgid(dev_addr, &mc->multicast.ib->rec.port_gid); | |
3142 | work->id = id_priv; | |
3143 | work->mc = mc; | |
3144 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
3145 | kref_get(&mc->mcref); | |
3146 | queue_work(cma_wq, &work->work); | |
3147 | ||
3148 | return 0; | |
3149 | ||
3150 | out2: | |
3151 | kfree(mc->multicast.ib); | |
3152 | out1: | |
3153 | kfree(work); | |
3154 | return err; | |
3155 | } | |
3156 | ||
c8f6a362 SH |
3157 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
3158 | void *context) | |
3159 | { | |
3160 | struct rdma_id_private *id_priv; | |
3161 | struct cma_multicast *mc; | |
3162 | int ret; | |
3163 | ||
3164 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
3165 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
3166 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
3167 | return -EINVAL; |
3168 | ||
3169 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
3170 | if (!mc) | |
3171 | return -ENOMEM; | |
3172 | ||
3173 | memcpy(&mc->addr, addr, ip_addr_size(addr)); | |
3174 | mc->context = context; | |
3175 | mc->id_priv = id_priv; | |
3176 | ||
3177 | spin_lock(&id_priv->lock); | |
3178 | list_add(&mc->list, &id_priv->mc_list); | |
3179 | spin_unlock(&id_priv->lock); | |
3180 | ||
3181 | switch (rdma_node_get_transport(id->device->node_type)) { | |
3182 | case RDMA_TRANSPORT_IB: | |
3c86aa70 EC |
3183 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { |
3184 | case IB_LINK_LAYER_INFINIBAND: | |
3185 | ret = cma_join_ib_multicast(id_priv, mc); | |
3186 | break; | |
3187 | case IB_LINK_LAYER_ETHERNET: | |
3188 | kref_init(&mc->mcref); | |
3189 | ret = cma_iboe_join_multicast(id_priv, mc); | |
3190 | break; | |
3191 | default: | |
3192 | ret = -EINVAL; | |
3193 | } | |
c8f6a362 SH |
3194 | break; |
3195 | default: | |
3196 | ret = -ENOSYS; | |
3197 | break; | |
3198 | } | |
3199 | ||
3200 | if (ret) { | |
3201 | spin_lock_irq(&id_priv->lock); | |
3202 | list_del(&mc->list); | |
3203 | spin_unlock_irq(&id_priv->lock); | |
3204 | kfree(mc); | |
3205 | } | |
3206 | return ret; | |
3207 | } | |
3208 | EXPORT_SYMBOL(rdma_join_multicast); | |
3209 | ||
3210 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
3211 | { | |
3212 | struct rdma_id_private *id_priv; | |
3213 | struct cma_multicast *mc; | |
3214 | ||
3215 | id_priv = container_of(id, struct rdma_id_private, id); | |
3216 | spin_lock_irq(&id_priv->lock); | |
3217 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
3218 | if (!memcmp(&mc->addr, addr, ip_addr_size(addr))) { | |
3219 | list_del(&mc->list); | |
3220 | spin_unlock_irq(&id_priv->lock); | |
3221 | ||
3222 | if (id->qp) | |
3223 | ib_detach_mcast(id->qp, | |
3224 | &mc->multicast.ib->rec.mgid, | |
46ea5061 | 3225 | be16_to_cpu(mc->multicast.ib->rec.mlid)); |
3c86aa70 EC |
3226 | if (rdma_node_get_transport(id_priv->cma_dev->device->node_type) == RDMA_TRANSPORT_IB) { |
3227 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { | |
3228 | case IB_LINK_LAYER_INFINIBAND: | |
3229 | ib_sa_free_multicast(mc->multicast.ib); | |
3230 | kfree(mc); | |
3231 | break; | |
3232 | case IB_LINK_LAYER_ETHERNET: | |
3233 | kref_put(&mc->mcref, release_mc); | |
3234 | break; | |
3235 | default: | |
3236 | break; | |
3237 | } | |
3238 | } | |
c8f6a362 SH |
3239 | return; |
3240 | } | |
3241 | } | |
3242 | spin_unlock_irq(&id_priv->lock); | |
3243 | } | |
3244 | EXPORT_SYMBOL(rdma_leave_multicast); | |
3245 | ||
dd5bdff8 OG |
3246 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
3247 | { | |
3248 | struct rdma_dev_addr *dev_addr; | |
3249 | struct cma_ndev_work *work; | |
3250 | ||
3251 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
3252 | ||
6266ed6e | 3253 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
dd5bdff8 OG |
3254 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
3255 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
3256 | ndev->name, &id_priv->id); | |
3257 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3258 | if (!work) | |
3259 | return -ENOMEM; | |
3260 | ||
3261 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
3262 | work->id = id_priv; | |
3263 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
3264 | atomic_inc(&id_priv->refcount); | |
3265 | queue_work(cma_wq, &work->work); | |
3266 | } | |
3267 | ||
3268 | return 0; | |
3269 | } | |
3270 | ||
3271 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
3272 | void *ctx) | |
3273 | { | |
3274 | struct net_device *ndev = (struct net_device *)ctx; | |
3275 | struct cma_device *cma_dev; | |
3276 | struct rdma_id_private *id_priv; | |
3277 | int ret = NOTIFY_DONE; | |
3278 | ||
3279 | if (dev_net(ndev) != &init_net) | |
3280 | return NOTIFY_DONE; | |
3281 | ||
3282 | if (event != NETDEV_BONDING_FAILOVER) | |
3283 | return NOTIFY_DONE; | |
3284 | ||
3285 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
3286 | return NOTIFY_DONE; | |
3287 | ||
3288 | mutex_lock(&lock); | |
3289 | list_for_each_entry(cma_dev, &dev_list, list) | |
3290 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3291 | ret = cma_netdev_change(ndev, id_priv); | |
3292 | if (ret) | |
3293 | goto out; | |
3294 | } | |
3295 | ||
3296 | out: | |
3297 | mutex_unlock(&lock); | |
3298 | return ret; | |
3299 | } | |
3300 | ||
3301 | static struct notifier_block cma_nb = { | |
3302 | .notifier_call = cma_netdev_callback | |
3303 | }; | |
3304 | ||
e51060f0 SH |
3305 | static void cma_add_one(struct ib_device *device) |
3306 | { | |
3307 | struct cma_device *cma_dev; | |
3308 | struct rdma_id_private *id_priv; | |
3309 | ||
3310 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
3311 | if (!cma_dev) | |
3312 | return; | |
3313 | ||
3314 | cma_dev->device = device; | |
e51060f0 SH |
3315 | |
3316 | init_completion(&cma_dev->comp); | |
3317 | atomic_set(&cma_dev->refcount, 1); | |
3318 | INIT_LIST_HEAD(&cma_dev->id_list); | |
3319 | ib_set_client_data(device, &cma_client, cma_dev); | |
3320 | ||
3321 | mutex_lock(&lock); | |
3322 | list_add_tail(&cma_dev->list, &dev_list); | |
3323 | list_for_each_entry(id_priv, &listen_any_list, list) | |
3324 | cma_listen_on_dev(id_priv, cma_dev); | |
3325 | mutex_unlock(&lock); | |
e51060f0 SH |
3326 | } |
3327 | ||
3328 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
3329 | { | |
a1b1b61f | 3330 | struct rdma_cm_event event; |
550e5ca7 | 3331 | enum rdma_cm_state state; |
de910bd9 | 3332 | int ret = 0; |
e51060f0 SH |
3333 | |
3334 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
3335 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
3336 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
3337 | return 0; |
3338 | ||
3339 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 3340 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
3341 | |
3342 | /* Check for destruction from another callback. */ | |
550e5ca7 | 3343 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 3344 | goto out; |
e51060f0 | 3345 | |
a1b1b61f SH |
3346 | memset(&event, 0, sizeof event); |
3347 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
3348 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
3349 | out: | |
3350 | mutex_unlock(&id_priv->handler_mutex); | |
3351 | return ret; | |
e51060f0 SH |
3352 | } |
3353 | ||
3354 | static void cma_process_remove(struct cma_device *cma_dev) | |
3355 | { | |
e51060f0 SH |
3356 | struct rdma_id_private *id_priv; |
3357 | int ret; | |
3358 | ||
e51060f0 SH |
3359 | mutex_lock(&lock); |
3360 | while (!list_empty(&cma_dev->id_list)) { | |
3361 | id_priv = list_entry(cma_dev->id_list.next, | |
3362 | struct rdma_id_private, list); | |
3363 | ||
d02d1f53 | 3364 | list_del(&id_priv->listen_list); |
94de178a | 3365 | list_del_init(&id_priv->list); |
e51060f0 SH |
3366 | atomic_inc(&id_priv->refcount); |
3367 | mutex_unlock(&lock); | |
3368 | ||
d02d1f53 | 3369 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
3370 | cma_deref_id(id_priv); |
3371 | if (ret) | |
3372 | rdma_destroy_id(&id_priv->id); | |
3373 | ||
3374 | mutex_lock(&lock); | |
3375 | } | |
3376 | mutex_unlock(&lock); | |
3377 | ||
3378 | cma_deref_dev(cma_dev); | |
3379 | wait_for_completion(&cma_dev->comp); | |
3380 | } | |
3381 | ||
3382 | static void cma_remove_one(struct ib_device *device) | |
3383 | { | |
3384 | struct cma_device *cma_dev; | |
3385 | ||
3386 | cma_dev = ib_get_client_data(device, &cma_client); | |
3387 | if (!cma_dev) | |
3388 | return; | |
3389 | ||
3390 | mutex_lock(&lock); | |
3391 | list_del(&cma_dev->list); | |
3392 | mutex_unlock(&lock); | |
3393 | ||
3394 | cma_process_remove(cma_dev); | |
3395 | kfree(cma_dev); | |
3396 | } | |
3397 | ||
753f618a NM |
3398 | static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) |
3399 | { | |
3400 | struct nlmsghdr *nlh; | |
3401 | struct rdma_cm_id_stats *id_stats; | |
3402 | struct rdma_id_private *id_priv; | |
3403 | struct rdma_cm_id *id = NULL; | |
3404 | struct cma_device *cma_dev; | |
3405 | int i_dev = 0, i_id = 0; | |
3406 | ||
3407 | /* | |
3408 | * We export all of the IDs as a sequence of messages. Each | |
3409 | * ID gets its own netlink message. | |
3410 | */ | |
3411 | mutex_lock(&lock); | |
3412 | ||
3413 | list_for_each_entry(cma_dev, &dev_list, list) { | |
3414 | if (i_dev < cb->args[0]) { | |
3415 | i_dev++; | |
3416 | continue; | |
3417 | } | |
3418 | ||
3419 | i_id = 0; | |
3420 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3421 | if (i_id < cb->args[1]) { | |
3422 | i_id++; | |
3423 | continue; | |
3424 | } | |
3425 | ||
3426 | id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, | |
3427 | sizeof *id_stats, RDMA_NL_RDMA_CM, | |
3428 | RDMA_NL_RDMA_CM_ID_STATS); | |
3429 | if (!id_stats) | |
3430 | goto out; | |
3431 | ||
3432 | memset(id_stats, 0, sizeof *id_stats); | |
3433 | id = &id_priv->id; | |
3434 | id_stats->node_type = id->route.addr.dev_addr.dev_type; | |
3435 | id_stats->port_num = id->port_num; | |
3436 | id_stats->bound_dev_if = | |
3437 | id->route.addr.dev_addr.bound_dev_if; | |
3438 | ||
3439 | if (id->route.addr.src_addr.ss_family == AF_INET) { | |
3440 | if (ibnl_put_attr(skb, nlh, | |
3441 | sizeof(struct sockaddr_in), | |
3442 | &id->route.addr.src_addr, | |
3443 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) { | |
3444 | goto out; | |
3445 | } | |
3446 | if (ibnl_put_attr(skb, nlh, | |
3447 | sizeof(struct sockaddr_in), | |
3448 | &id->route.addr.dst_addr, | |
3449 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) { | |
3450 | goto out; | |
3451 | } | |
3452 | } else if (id->route.addr.src_addr.ss_family == AF_INET6) { | |
3453 | if (ibnl_put_attr(skb, nlh, | |
3454 | sizeof(struct sockaddr_in6), | |
3455 | &id->route.addr.src_addr, | |
3456 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) { | |
3457 | goto out; | |
3458 | } | |
3459 | if (ibnl_put_attr(skb, nlh, | |
3460 | sizeof(struct sockaddr_in6), | |
3461 | &id->route.addr.dst_addr, | |
3462 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) { | |
3463 | goto out; | |
3464 | } | |
3465 | } | |
3466 | ||
83e9502d | 3467 | id_stats->pid = id_priv->owner; |
753f618a NM |
3468 | id_stats->port_space = id->ps; |
3469 | id_stats->cm_state = id_priv->state; | |
3470 | id_stats->qp_num = id_priv->qp_num; | |
3471 | id_stats->qp_type = id->qp_type; | |
3472 | ||
3473 | i_id++; | |
3474 | } | |
3475 | ||
3476 | cb->args[1] = 0; | |
3477 | i_dev++; | |
3478 | } | |
3479 | ||
3480 | out: | |
3481 | mutex_unlock(&lock); | |
3482 | cb->args[0] = i_dev; | |
3483 | cb->args[1] = i_id; | |
3484 | ||
3485 | return skb->len; | |
3486 | } | |
3487 | ||
3488 | static const struct ibnl_client_cbs cma_cb_table[] = { | |
809d5fc9 G |
3489 | [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats, |
3490 | .module = THIS_MODULE }, | |
753f618a NM |
3491 | }; |
3492 | ||
716abb1f | 3493 | static int __init cma_init(void) |
e51060f0 | 3494 | { |
5d7220e8 | 3495 | int ret; |
227b60f5 | 3496 | |
c7f743a6 | 3497 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
3498 | if (!cma_wq) |
3499 | return -ENOMEM; | |
3500 | ||
c1a0b23b | 3501 | ib_sa_register_client(&sa_client); |
7a118df3 | 3502 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 3503 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 3504 | |
e51060f0 SH |
3505 | ret = ib_register_client(&cma_client); |
3506 | if (ret) | |
3507 | goto err; | |
753f618a NM |
3508 | |
3509 | if (ibnl_add_client(RDMA_NL_RDMA_CM, RDMA_NL_RDMA_CM_NUM_OPS, cma_cb_table)) | |
3510 | printk(KERN_WARNING "RDMA CMA: failed to add netlink callback\n"); | |
3511 | ||
e51060f0 SH |
3512 | return 0; |
3513 | ||
3514 | err: | |
dd5bdff8 | 3515 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3516 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3517 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3518 | destroy_workqueue(cma_wq); |
3519 | return ret; | |
3520 | } | |
3521 | ||
716abb1f | 3522 | static void __exit cma_cleanup(void) |
e51060f0 | 3523 | { |
753f618a | 3524 | ibnl_remove_client(RDMA_NL_RDMA_CM); |
e51060f0 | 3525 | ib_unregister_client(&cma_client); |
dd5bdff8 | 3526 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3527 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3528 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3529 | destroy_workqueue(cma_wq); |
3530 | idr_destroy(&sdp_ps); | |
3531 | idr_destroy(&tcp_ps); | |
628e5f6d | 3532 | idr_destroy(&udp_ps); |
c8f6a362 | 3533 | idr_destroy(&ipoib_ps); |
2d2e9415 | 3534 | idr_destroy(&ib_ps); |
e51060f0 SH |
3535 | } |
3536 | ||
3537 | module_init(cma_init); | |
3538 | module_exit(cma_cleanup); |