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> |
2e2d190c | 53 | #include <rdma/ib.h> |
e51060f0 SH |
54 | #include <rdma/ib_cache.h> |
55 | #include <rdma/ib_cm.h> | |
56 | #include <rdma/ib_sa.h> | |
07ebafba | 57 | #include <rdma/iw_cm.h> |
e51060f0 SH |
58 | |
59 | MODULE_AUTHOR("Sean Hefty"); | |
60 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
61 | MODULE_LICENSE("Dual BSD/GPL"); | |
62 | ||
63 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
d5bb7599 | 64 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 65 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 66 | #define CMA_IBOE_PACKET_LIFETIME 18 |
e51060f0 SH |
67 | |
68 | static void cma_add_one(struct ib_device *device); | |
69 | static void cma_remove_one(struct ib_device *device); | |
70 | ||
71 | static struct ib_client cma_client = { | |
72 | .name = "cma", | |
73 | .add = cma_add_one, | |
74 | .remove = cma_remove_one | |
75 | }; | |
76 | ||
c1a0b23b | 77 | static struct ib_sa_client sa_client; |
7a118df3 | 78 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
79 | static LIST_HEAD(dev_list); |
80 | static LIST_HEAD(listen_any_list); | |
81 | static DEFINE_MUTEX(lock); | |
82 | static struct workqueue_struct *cma_wq; | |
83 | static DEFINE_IDR(sdp_ps); | |
84 | static DEFINE_IDR(tcp_ps); | |
628e5f6d | 85 | static DEFINE_IDR(udp_ps); |
c8f6a362 | 86 | static DEFINE_IDR(ipoib_ps); |
2d2e9415 | 87 | static DEFINE_IDR(ib_ps); |
e51060f0 SH |
88 | |
89 | struct cma_device { | |
90 | struct list_head list; | |
91 | struct ib_device *device; | |
e51060f0 SH |
92 | struct completion comp; |
93 | atomic_t refcount; | |
94 | struct list_head id_list; | |
95 | }; | |
96 | ||
e51060f0 SH |
97 | struct rdma_bind_list { |
98 | struct idr *ps; | |
99 | struct hlist_head owners; | |
100 | unsigned short port; | |
101 | }; | |
102 | ||
68602120 SH |
103 | enum { |
104 | CMA_OPTION_AFONLY, | |
105 | }; | |
106 | ||
e51060f0 SH |
107 | /* |
108 | * Device removal can occur at anytime, so we need extra handling to | |
109 | * serialize notifying the user of device removal with other callbacks. | |
110 | * We do this by disabling removal notification while a callback is in process, | |
111 | * and reporting it after the callback completes. | |
112 | */ | |
113 | struct rdma_id_private { | |
114 | struct rdma_cm_id id; | |
115 | ||
116 | struct rdma_bind_list *bind_list; | |
117 | struct hlist_node node; | |
d02d1f53 SH |
118 | struct list_head list; /* listen_any_list or cma_device.list */ |
119 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 120 | struct cma_device *cma_dev; |
c8f6a362 | 121 | struct list_head mc_list; |
e51060f0 | 122 | |
d02d1f53 | 123 | int internal_id; |
550e5ca7 | 124 | enum rdma_cm_state state; |
e51060f0 | 125 | spinlock_t lock; |
c5483388 SH |
126 | struct mutex qp_mutex; |
127 | ||
e51060f0 SH |
128 | struct completion comp; |
129 | atomic_t refcount; | |
de910bd9 | 130 | struct mutex handler_mutex; |
e51060f0 SH |
131 | |
132 | int backlog; | |
133 | int timeout_ms; | |
134 | struct ib_sa_query *query; | |
135 | int query_id; | |
136 | union { | |
137 | struct ib_cm_id *ib; | |
07ebafba | 138 | struct iw_cm_id *iw; |
e51060f0 SH |
139 | } cm_id; |
140 | ||
141 | u32 seq_num; | |
c8f6a362 | 142 | u32 qkey; |
e51060f0 | 143 | u32 qp_num; |
83e9502d | 144 | pid_t owner; |
68602120 | 145 | u32 options; |
e51060f0 | 146 | u8 srq; |
a81c994d | 147 | u8 tos; |
a9bb7912 | 148 | u8 reuseaddr; |
5b0ec991 | 149 | u8 afonly; |
e51060f0 SH |
150 | }; |
151 | ||
c8f6a362 SH |
152 | struct cma_multicast { |
153 | struct rdma_id_private *id_priv; | |
154 | union { | |
155 | struct ib_sa_multicast *ib; | |
156 | } multicast; | |
157 | struct list_head list; | |
158 | void *context; | |
3f446754 | 159 | struct sockaddr_storage addr; |
3c86aa70 | 160 | struct kref mcref; |
c8f6a362 SH |
161 | }; |
162 | ||
e51060f0 SH |
163 | struct cma_work { |
164 | struct work_struct work; | |
165 | struct rdma_id_private *id; | |
550e5ca7 NM |
166 | enum rdma_cm_state old_state; |
167 | enum rdma_cm_state new_state; | |
e51060f0 SH |
168 | struct rdma_cm_event event; |
169 | }; | |
170 | ||
dd5bdff8 OG |
171 | struct cma_ndev_work { |
172 | struct work_struct work; | |
173 | struct rdma_id_private *id; | |
174 | struct rdma_cm_event event; | |
175 | }; | |
176 | ||
3c86aa70 EC |
177 | struct iboe_mcast_work { |
178 | struct work_struct work; | |
179 | struct rdma_id_private *id; | |
180 | struct cma_multicast *mc; | |
181 | }; | |
182 | ||
e51060f0 SH |
183 | union cma_ip_addr { |
184 | struct in6_addr ip6; | |
185 | struct { | |
1b90c137 AV |
186 | __be32 pad[3]; |
187 | __be32 addr; | |
e51060f0 SH |
188 | } ip4; |
189 | }; | |
190 | ||
191 | struct cma_hdr { | |
192 | u8 cma_version; | |
193 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 194 | __be16 port; |
e51060f0 SH |
195 | union cma_ip_addr src_addr; |
196 | union cma_ip_addr dst_addr; | |
197 | }; | |
198 | ||
199 | struct sdp_hh { | |
200 | u8 bsdh[16]; | |
201 | u8 sdp_version; /* Major version: 7:4 */ | |
202 | u8 ip_version; /* IP version: 7:4 */ | |
203 | u8 sdp_specific1[10]; | |
1b90c137 AV |
204 | __be16 port; |
205 | __be16 sdp_specific2; | |
e51060f0 SH |
206 | union cma_ip_addr src_addr; |
207 | union cma_ip_addr dst_addr; | |
208 | }; | |
209 | ||
210 | struct sdp_hah { | |
211 | u8 bsdh[16]; | |
212 | u8 sdp_version; | |
213 | }; | |
214 | ||
215 | #define CMA_VERSION 0x00 | |
216 | #define SDP_MAJ_VERSION 0x2 | |
217 | ||
550e5ca7 | 218 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
219 | { |
220 | unsigned long flags; | |
221 | int ret; | |
222 | ||
223 | spin_lock_irqsave(&id_priv->lock, flags); | |
224 | ret = (id_priv->state == comp); | |
225 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
226 | return ret; | |
227 | } | |
228 | ||
229 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 230 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
231 | { |
232 | unsigned long flags; | |
233 | int ret; | |
234 | ||
235 | spin_lock_irqsave(&id_priv->lock, flags); | |
236 | if ((ret = (id_priv->state == comp))) | |
237 | id_priv->state = exch; | |
238 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
239 | return ret; | |
240 | } | |
241 | ||
550e5ca7 NM |
242 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
243 | enum rdma_cm_state exch) | |
e51060f0 SH |
244 | { |
245 | unsigned long flags; | |
550e5ca7 | 246 | enum rdma_cm_state old; |
e51060f0 SH |
247 | |
248 | spin_lock_irqsave(&id_priv->lock, flags); | |
249 | old = id_priv->state; | |
250 | id_priv->state = exch; | |
251 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
252 | return old; | |
253 | } | |
254 | ||
255 | static inline u8 cma_get_ip_ver(struct cma_hdr *hdr) | |
256 | { | |
257 | return hdr->ip_version >> 4; | |
258 | } | |
259 | ||
260 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
261 | { | |
262 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
263 | } | |
264 | ||
265 | static inline u8 sdp_get_majv(u8 sdp_version) | |
266 | { | |
267 | return sdp_version >> 4; | |
268 | } | |
269 | ||
270 | static inline u8 sdp_get_ip_ver(struct sdp_hh *hh) | |
271 | { | |
272 | return hh->ip_version >> 4; | |
273 | } | |
274 | ||
275 | static inline void sdp_set_ip_ver(struct sdp_hh *hh, u8 ip_ver) | |
276 | { | |
277 | hh->ip_version = (ip_ver << 4) | (hh->ip_version & 0xF); | |
278 | } | |
279 | ||
280 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, | |
281 | struct cma_device *cma_dev) | |
282 | { | |
283 | atomic_inc(&cma_dev->refcount); | |
284 | id_priv->cma_dev = cma_dev; | |
285 | id_priv->id.device = cma_dev->device; | |
3c86aa70 EC |
286 | id_priv->id.route.addr.dev_addr.transport = |
287 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 SH |
288 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
289 | } | |
290 | ||
291 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
292 | { | |
293 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
294 | complete(&cma_dev->comp); | |
295 | } | |
296 | ||
3c86aa70 EC |
297 | static inline void release_mc(struct kref *kref) |
298 | { | |
299 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
300 | ||
301 | kfree(mc->multicast.ib); | |
302 | kfree(mc); | |
303 | } | |
304 | ||
a396d43a | 305 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 306 | { |
a396d43a | 307 | mutex_lock(&lock); |
e51060f0 SH |
308 | list_del(&id_priv->list); |
309 | cma_deref_dev(id_priv->cma_dev); | |
310 | id_priv->cma_dev = NULL; | |
a396d43a | 311 | mutex_unlock(&lock); |
e51060f0 SH |
312 | } |
313 | ||
f4753834 SH |
314 | static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv) |
315 | { | |
316 | return (struct sockaddr *) &id_priv->id.route.addr.src_addr; | |
317 | } | |
318 | ||
319 | static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv) | |
320 | { | |
321 | return (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
322 | } | |
323 | ||
324 | static inline unsigned short cma_family(struct rdma_id_private *id_priv) | |
325 | { | |
326 | return id_priv->id.route.addr.src_addr.ss_family; | |
327 | } | |
328 | ||
d2ca39f2 | 329 | static int cma_set_qkey(struct rdma_id_private *id_priv) |
c8f6a362 SH |
330 | { |
331 | struct ib_sa_mcmember_rec rec; | |
332 | int ret = 0; | |
333 | ||
d2ca39f2 YE |
334 | if (id_priv->qkey) |
335 | return 0; | |
336 | ||
337 | switch (id_priv->id.ps) { | |
c8f6a362 | 338 | case RDMA_PS_UDP: |
d2ca39f2 | 339 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
340 | break; |
341 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
342 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
343 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
344 | id_priv->id.port_num, &rec.mgid, | |
345 | &rec); | |
346 | if (!ret) | |
347 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
348 | break; |
349 | default: | |
350 | break; | |
351 | } | |
352 | return ret; | |
353 | } | |
354 | ||
3c86aa70 EC |
355 | static int find_gid_port(struct ib_device *device, union ib_gid *gid, u8 port_num) |
356 | { | |
357 | int i; | |
358 | int err; | |
359 | struct ib_port_attr props; | |
360 | union ib_gid tmp; | |
361 | ||
362 | err = ib_query_port(device, port_num, &props); | |
363 | if (err) | |
63f05be2 | 364 | return err; |
3c86aa70 EC |
365 | |
366 | for (i = 0; i < props.gid_tbl_len; ++i) { | |
367 | err = ib_query_gid(device, port_num, i, &tmp); | |
368 | if (err) | |
63f05be2 | 369 | return err; |
3c86aa70 EC |
370 | if (!memcmp(&tmp, gid, sizeof tmp)) |
371 | return 0; | |
372 | } | |
373 | ||
63f05be2 | 374 | return -EADDRNOTAVAIL; |
3c86aa70 EC |
375 | } |
376 | ||
680f920a SH |
377 | static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr) |
378 | { | |
379 | dev_addr->dev_type = ARPHRD_INFINIBAND; | |
380 | rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr); | |
381 | ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey)); | |
382 | } | |
383 | ||
384 | static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) | |
385 | { | |
386 | int ret; | |
387 | ||
388 | if (addr->sa_family != AF_IB) { | |
389 | ret = rdma_translate_ip(addr, dev_addr); | |
390 | } else { | |
391 | cma_translate_ib((struct sockaddr_ib *) addr, dev_addr); | |
392 | ret = 0; | |
393 | } | |
394 | ||
395 | return ret; | |
396 | } | |
397 | ||
07ebafba | 398 | static int cma_acquire_dev(struct rdma_id_private *id_priv) |
e51060f0 | 399 | { |
c8f6a362 | 400 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 401 | struct cma_device *cma_dev; |
3c86aa70 | 402 | union ib_gid gid, iboe_gid; |
e51060f0 | 403 | int ret = -ENODEV; |
3c86aa70 EC |
404 | u8 port; |
405 | enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ? | |
406 | IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; | |
e51060f0 | 407 | |
2efdd6a0 MS |
408 | if (dev_ll != IB_LINK_LAYER_INFINIBAND && |
409 | id_priv->id.ps == RDMA_PS_IPOIB) | |
410 | return -EINVAL; | |
411 | ||
a396d43a | 412 | mutex_lock(&lock); |
3c86aa70 EC |
413 | iboe_addr_get_sgid(dev_addr, &iboe_gid); |
414 | memcpy(&gid, dev_addr->src_dev_addr + | |
415 | rdma_addr_gid_offset(dev_addr), sizeof gid); | |
e51060f0 | 416 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 EC |
417 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
418 | if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) { | |
419 | if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB && | |
420 | rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET) | |
421 | ret = find_gid_port(cma_dev->device, &iboe_gid, port); | |
422 | else | |
423 | ret = find_gid_port(cma_dev->device, &gid, port); | |
424 | ||
425 | if (!ret) { | |
426 | id_priv->id.port_num = port; | |
427 | goto out; | |
63f05be2 | 428 | } |
3c86aa70 | 429 | } |
e51060f0 SH |
430 | } |
431 | } | |
3c86aa70 EC |
432 | |
433 | out: | |
434 | if (!ret) | |
435 | cma_attach_to_dev(id_priv, cma_dev); | |
436 | ||
a396d43a | 437 | mutex_unlock(&lock); |
e51060f0 SH |
438 | return ret; |
439 | } | |
440 | ||
e51060f0 SH |
441 | static void cma_deref_id(struct rdma_id_private *id_priv) |
442 | { | |
443 | if (atomic_dec_and_test(&id_priv->refcount)) | |
444 | complete(&id_priv->comp); | |
445 | } | |
446 | ||
de910bd9 | 447 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
550e5ca7 | 448 | enum rdma_cm_state state) |
8aa08602 | 449 | { |
de910bd9 OG |
450 | mutex_lock(&id_priv->handler_mutex); |
451 | if (id_priv->state != state) { | |
452 | mutex_unlock(&id_priv->handler_mutex); | |
453 | return -EINVAL; | |
454 | } | |
455 | return 0; | |
e51060f0 SH |
456 | } |
457 | ||
458 | struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, | |
b26f9b99 SH |
459 | void *context, enum rdma_port_space ps, |
460 | enum ib_qp_type qp_type) | |
e51060f0 SH |
461 | { |
462 | struct rdma_id_private *id_priv; | |
463 | ||
464 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
465 | if (!id_priv) | |
466 | return ERR_PTR(-ENOMEM); | |
467 | ||
83e9502d | 468 | id_priv->owner = task_pid_nr(current); |
550e5ca7 | 469 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
470 | id_priv->id.context = context; |
471 | id_priv->id.event_handler = event_handler; | |
472 | id_priv->id.ps = ps; | |
b26f9b99 | 473 | id_priv->id.qp_type = qp_type; |
e51060f0 | 474 | spin_lock_init(&id_priv->lock); |
c5483388 | 475 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
476 | init_completion(&id_priv->comp); |
477 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 478 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 479 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 480 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 SH |
481 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
482 | ||
483 | return &id_priv->id; | |
484 | } | |
485 | EXPORT_SYMBOL(rdma_create_id); | |
486 | ||
c8f6a362 | 487 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
488 | { |
489 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 490 | int qp_attr_mask, ret; |
e51060f0 | 491 | |
c8f6a362 SH |
492 | qp_attr.qp_state = IB_QPS_INIT; |
493 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
494 | if (ret) |
495 | return ret; | |
496 | ||
c8f6a362 SH |
497 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
498 | if (ret) | |
499 | return ret; | |
500 | ||
501 | qp_attr.qp_state = IB_QPS_RTR; | |
502 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
503 | if (ret) | |
504 | return ret; | |
505 | ||
506 | qp_attr.qp_state = IB_QPS_RTS; | |
507 | qp_attr.sq_psn = 0; | |
508 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
509 | ||
510 | return ret; | |
e51060f0 SH |
511 | } |
512 | ||
c8f6a362 | 513 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
514 | { |
515 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 516 | int qp_attr_mask, ret; |
07ebafba TT |
517 | |
518 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
519 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
520 | if (ret) | |
521 | return ret; | |
07ebafba | 522 | |
c8f6a362 | 523 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
524 | } |
525 | ||
e51060f0 SH |
526 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
527 | struct ib_qp_init_attr *qp_init_attr) | |
528 | { | |
529 | struct rdma_id_private *id_priv; | |
530 | struct ib_qp *qp; | |
531 | int ret; | |
532 | ||
533 | id_priv = container_of(id, struct rdma_id_private, id); | |
534 | if (id->device != pd->device) | |
535 | return -EINVAL; | |
536 | ||
537 | qp = ib_create_qp(pd, qp_init_attr); | |
538 | if (IS_ERR(qp)) | |
539 | return PTR_ERR(qp); | |
540 | ||
b26f9b99 | 541 | if (id->qp_type == IB_QPT_UD) |
c8f6a362 SH |
542 | ret = cma_init_ud_qp(id_priv, qp); |
543 | else | |
544 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
545 | if (ret) |
546 | goto err; | |
547 | ||
548 | id->qp = qp; | |
549 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
550 | id_priv->srq = (qp->srq != NULL); |
551 | return 0; | |
552 | err: | |
553 | ib_destroy_qp(qp); | |
554 | return ret; | |
555 | } | |
556 | EXPORT_SYMBOL(rdma_create_qp); | |
557 | ||
558 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
559 | { | |
c5483388 SH |
560 | struct rdma_id_private *id_priv; |
561 | ||
562 | id_priv = container_of(id, struct rdma_id_private, id); | |
563 | mutex_lock(&id_priv->qp_mutex); | |
564 | ib_destroy_qp(id_priv->id.qp); | |
565 | id_priv->id.qp = NULL; | |
566 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
567 | } |
568 | EXPORT_SYMBOL(rdma_destroy_qp); | |
569 | ||
5851bb89 SH |
570 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
571 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
572 | { |
573 | struct ib_qp_attr qp_attr; | |
574 | int qp_attr_mask, ret; | |
575 | ||
c5483388 SH |
576 | mutex_lock(&id_priv->qp_mutex); |
577 | if (!id_priv->id.qp) { | |
578 | ret = 0; | |
579 | goto out; | |
580 | } | |
e51060f0 SH |
581 | |
582 | /* Need to update QP attributes from default values. */ | |
583 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 584 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 585 | if (ret) |
c5483388 | 586 | goto out; |
e51060f0 | 587 | |
c5483388 | 588 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 589 | if (ret) |
c5483388 | 590 | goto out; |
e51060f0 SH |
591 | |
592 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 593 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 594 | if (ret) |
c5483388 | 595 | goto out; |
e51060f0 | 596 | |
5851bb89 SH |
597 | if (conn_param) |
598 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
599 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
600 | out: | |
601 | mutex_unlock(&id_priv->qp_mutex); | |
602 | return ret; | |
e51060f0 SH |
603 | } |
604 | ||
5851bb89 SH |
605 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
606 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
607 | { |
608 | struct ib_qp_attr qp_attr; | |
609 | int qp_attr_mask, ret; | |
610 | ||
c5483388 SH |
611 | mutex_lock(&id_priv->qp_mutex); |
612 | if (!id_priv->id.qp) { | |
613 | ret = 0; | |
614 | goto out; | |
615 | } | |
e51060f0 SH |
616 | |
617 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 618 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 619 | if (ret) |
c5483388 | 620 | goto out; |
e51060f0 | 621 | |
5851bb89 SH |
622 | if (conn_param) |
623 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
624 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
625 | out: | |
626 | mutex_unlock(&id_priv->qp_mutex); | |
627 | return ret; | |
e51060f0 SH |
628 | } |
629 | ||
c5483388 | 630 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
631 | { |
632 | struct ib_qp_attr qp_attr; | |
c5483388 | 633 | int ret; |
e51060f0 | 634 | |
c5483388 SH |
635 | mutex_lock(&id_priv->qp_mutex); |
636 | if (!id_priv->id.qp) { | |
637 | ret = 0; | |
638 | goto out; | |
639 | } | |
e51060f0 SH |
640 | |
641 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
642 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
643 | out: | |
644 | mutex_unlock(&id_priv->qp_mutex); | |
645 | return ret; | |
e51060f0 SH |
646 | } |
647 | ||
c8f6a362 SH |
648 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
649 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
650 | { | |
651 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
652 | int ret; | |
3c86aa70 EC |
653 | u16 pkey; |
654 | ||
655 | if (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num) == | |
656 | IB_LINK_LAYER_INFINIBAND) | |
657 | pkey = ib_addr_get_pkey(dev_addr); | |
658 | else | |
659 | pkey = 0xffff; | |
c8f6a362 SH |
660 | |
661 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
3c86aa70 | 662 | pkey, &qp_attr->pkey_index); |
c8f6a362 SH |
663 | if (ret) |
664 | return ret; | |
665 | ||
666 | qp_attr->port_num = id_priv->id.port_num; | |
667 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
668 | ||
b26f9b99 | 669 | if (id_priv->id.qp_type == IB_QPT_UD) { |
d2ca39f2 YE |
670 | ret = cma_set_qkey(id_priv); |
671 | if (ret) | |
672 | return ret; | |
673 | ||
c8f6a362 SH |
674 | qp_attr->qkey = id_priv->qkey; |
675 | *qp_attr_mask |= IB_QP_QKEY; | |
676 | } else { | |
677 | qp_attr->qp_access_flags = 0; | |
678 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
679 | } | |
680 | return 0; | |
681 | } | |
682 | ||
e51060f0 SH |
683 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
684 | int *qp_attr_mask) | |
685 | { | |
686 | struct rdma_id_private *id_priv; | |
c8f6a362 | 687 | int ret = 0; |
e51060f0 SH |
688 | |
689 | id_priv = container_of(id, struct rdma_id_private, id); | |
07ebafba TT |
690 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
691 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 692 | if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) |
c8f6a362 SH |
693 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); |
694 | else | |
695 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
696 | qp_attr_mask); | |
e51060f0 SH |
697 | if (qp_attr->qp_state == IB_QPS_RTR) |
698 | qp_attr->rq_psn = id_priv->seq_num; | |
699 | break; | |
07ebafba | 700 | case RDMA_TRANSPORT_IWARP: |
c8f6a362 | 701 | if (!id_priv->cm_id.iw) { |
8f076531 | 702 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
703 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
704 | } else | |
705 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
706 | qp_attr_mask); | |
07ebafba | 707 | break; |
e51060f0 SH |
708 | default: |
709 | ret = -ENOSYS; | |
710 | break; | |
711 | } | |
712 | ||
713 | return ret; | |
714 | } | |
715 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
716 | ||
717 | static inline int cma_zero_addr(struct sockaddr *addr) | |
718 | { | |
2e2d190c SH |
719 | switch (addr->sa_family) { |
720 | case AF_INET: | |
721 | return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
722 | case AF_INET6: | |
723 | return ipv6_addr_any(&((struct sockaddr_in6 *) addr)->sin6_addr); | |
724 | case AF_IB: | |
725 | return ib_addr_any(&((struct sockaddr_ib *) addr)->sib_addr); | |
726 | default: | |
727 | return 0; | |
e51060f0 SH |
728 | } |
729 | } | |
730 | ||
731 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
732 | { | |
2e2d190c SH |
733 | switch (addr->sa_family) { |
734 | case AF_INET: | |
735 | return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr); | |
736 | case AF_INET6: | |
737 | return ipv6_addr_loopback(&((struct sockaddr_in6 *) addr)->sin6_addr); | |
738 | case AF_IB: | |
739 | return ib_addr_loopback(&((struct sockaddr_ib *) addr)->sib_addr); | |
740 | default: | |
741 | return 0; | |
742 | } | |
e51060f0 SH |
743 | } |
744 | ||
745 | static inline int cma_any_addr(struct sockaddr *addr) | |
746 | { | |
747 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
748 | } | |
749 | ||
43b752da HS |
750 | static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) |
751 | { | |
752 | if (src->sa_family != dst->sa_family) | |
753 | return -1; | |
754 | ||
755 | switch (src->sa_family) { | |
756 | case AF_INET: | |
757 | return ((struct sockaddr_in *) src)->sin_addr.s_addr != | |
758 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
2e2d190c | 759 | case AF_INET6: |
43b752da HS |
760 | return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, |
761 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
2e2d190c SH |
762 | default: |
763 | return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr, | |
764 | &((struct sockaddr_ib *) dst)->sib_addr); | |
43b752da HS |
765 | } |
766 | } | |
767 | ||
58afdcb7 | 768 | static __be16 cma_port(struct sockaddr *addr) |
628e5f6d | 769 | { |
58afdcb7 SH |
770 | struct sockaddr_ib *sib; |
771 | ||
772 | switch (addr->sa_family) { | |
773 | case AF_INET: | |
628e5f6d | 774 | return ((struct sockaddr_in *) addr)->sin_port; |
58afdcb7 | 775 | case AF_INET6: |
628e5f6d | 776 | return ((struct sockaddr_in6 *) addr)->sin6_port; |
58afdcb7 SH |
777 | case AF_IB: |
778 | sib = (struct sockaddr_ib *) addr; | |
779 | return htons((u16) (be64_to_cpu(sib->sib_sid) & | |
780 | be64_to_cpu(sib->sib_sid_mask))); | |
781 | default: | |
782 | return 0; | |
783 | } | |
628e5f6d SH |
784 | } |
785 | ||
e51060f0 SH |
786 | static inline int cma_any_port(struct sockaddr *addr) |
787 | { | |
628e5f6d | 788 | return !cma_port(addr); |
e51060f0 SH |
789 | } |
790 | ||
791 | static int cma_get_net_info(void *hdr, enum rdma_port_space ps, | |
1b90c137 | 792 | u8 *ip_ver, __be16 *port, |
e51060f0 SH |
793 | union cma_ip_addr **src, union cma_ip_addr **dst) |
794 | { | |
795 | switch (ps) { | |
796 | case RDMA_PS_SDP: | |
797 | if (sdp_get_majv(((struct sdp_hh *) hdr)->sdp_version) != | |
798 | SDP_MAJ_VERSION) | |
799 | return -EINVAL; | |
800 | ||
801 | *ip_ver = sdp_get_ip_ver(hdr); | |
802 | *port = ((struct sdp_hh *) hdr)->port; | |
803 | *src = &((struct sdp_hh *) hdr)->src_addr; | |
804 | *dst = &((struct sdp_hh *) hdr)->dst_addr; | |
805 | break; | |
806 | default: | |
807 | if (((struct cma_hdr *) hdr)->cma_version != CMA_VERSION) | |
808 | return -EINVAL; | |
809 | ||
810 | *ip_ver = cma_get_ip_ver(hdr); | |
811 | *port = ((struct cma_hdr *) hdr)->port; | |
812 | *src = &((struct cma_hdr *) hdr)->src_addr; | |
813 | *dst = &((struct cma_hdr *) hdr)->dst_addr; | |
814 | break; | |
815 | } | |
816 | ||
817 | if (*ip_ver != 4 && *ip_ver != 6) | |
818 | return -EINVAL; | |
819 | return 0; | |
820 | } | |
821 | ||
822 | static void cma_save_net_info(struct rdma_addr *addr, | |
823 | struct rdma_addr *listen_addr, | |
1b90c137 | 824 | u8 ip_ver, __be16 port, |
e51060f0 SH |
825 | union cma_ip_addr *src, union cma_ip_addr *dst) |
826 | { | |
827 | struct sockaddr_in *listen4, *ip4; | |
828 | struct sockaddr_in6 *listen6, *ip6; | |
829 | ||
830 | switch (ip_ver) { | |
831 | case 4: | |
832 | listen4 = (struct sockaddr_in *) &listen_addr->src_addr; | |
833 | ip4 = (struct sockaddr_in *) &addr->src_addr; | |
834 | ip4->sin_family = listen4->sin_family; | |
835 | ip4->sin_addr.s_addr = dst->ip4.addr; | |
836 | ip4->sin_port = listen4->sin_port; | |
837 | ||
838 | ip4 = (struct sockaddr_in *) &addr->dst_addr; | |
839 | ip4->sin_family = listen4->sin_family; | |
840 | ip4->sin_addr.s_addr = src->ip4.addr; | |
841 | ip4->sin_port = port; | |
842 | break; | |
843 | case 6: | |
844 | listen6 = (struct sockaddr_in6 *) &listen_addr->src_addr; | |
845 | ip6 = (struct sockaddr_in6 *) &addr->src_addr; | |
846 | ip6->sin6_family = listen6->sin6_family; | |
847 | ip6->sin6_addr = dst->ip6; | |
848 | ip6->sin6_port = listen6->sin6_port; | |
849 | ||
850 | ip6 = (struct sockaddr_in6 *) &addr->dst_addr; | |
851 | ip6->sin6_family = listen6->sin6_family; | |
852 | ip6->sin6_addr = src->ip6; | |
853 | ip6->sin6_port = port; | |
854 | break; | |
855 | default: | |
856 | break; | |
857 | } | |
858 | } | |
859 | ||
860 | static inline int cma_user_data_offset(enum rdma_port_space ps) | |
861 | { | |
862 | switch (ps) { | |
863 | case RDMA_PS_SDP: | |
864 | return 0; | |
865 | default: | |
866 | return sizeof(struct cma_hdr); | |
867 | } | |
868 | } | |
869 | ||
e51060f0 SH |
870 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
871 | { | |
3c86aa70 EC |
872 | switch (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num)) { |
873 | case IB_LINK_LAYER_INFINIBAND: | |
e51060f0 SH |
874 | if (id_priv->query) |
875 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
876 | break; | |
877 | default: | |
878 | break; | |
879 | } | |
880 | } | |
881 | ||
e51060f0 SH |
882 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
883 | { | |
884 | struct rdma_id_private *dev_id_priv; | |
885 | ||
d02d1f53 SH |
886 | /* |
887 | * Remove from listen_any_list to prevent added devices from spawning | |
888 | * additional listen requests. | |
889 | */ | |
e51060f0 SH |
890 | mutex_lock(&lock); |
891 | list_del(&id_priv->list); | |
892 | ||
893 | while (!list_empty(&id_priv->listen_list)) { | |
894 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
895 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
896 | /* sync with device removal to avoid duplicate destruction */ |
897 | list_del_init(&dev_id_priv->list); | |
898 | list_del(&dev_id_priv->listen_list); | |
899 | mutex_unlock(&lock); | |
900 | ||
901 | rdma_destroy_id(&dev_id_priv->id); | |
902 | mutex_lock(&lock); | |
e51060f0 SH |
903 | } |
904 | mutex_unlock(&lock); | |
905 | } | |
906 | ||
907 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 908 | enum rdma_cm_state state) |
e51060f0 SH |
909 | { |
910 | switch (state) { | |
550e5ca7 | 911 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
912 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
913 | break; | |
550e5ca7 | 914 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
915 | cma_cancel_route(id_priv); |
916 | break; | |
550e5ca7 | 917 | case RDMA_CM_LISTEN: |
f4753834 | 918 | if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) |
e51060f0 SH |
919 | cma_cancel_listens(id_priv); |
920 | break; | |
921 | default: | |
922 | break; | |
923 | } | |
924 | } | |
925 | ||
926 | static void cma_release_port(struct rdma_id_private *id_priv) | |
927 | { | |
928 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
929 | ||
930 | if (!bind_list) | |
931 | return; | |
932 | ||
933 | mutex_lock(&lock); | |
934 | hlist_del(&id_priv->node); | |
935 | if (hlist_empty(&bind_list->owners)) { | |
936 | idr_remove(bind_list->ps, bind_list->port); | |
937 | kfree(bind_list); | |
938 | } | |
939 | mutex_unlock(&lock); | |
940 | } | |
941 | ||
c8f6a362 SH |
942 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
943 | { | |
944 | struct cma_multicast *mc; | |
945 | ||
946 | while (!list_empty(&id_priv->mc_list)) { | |
947 | mc = container_of(id_priv->mc_list.next, | |
948 | struct cma_multicast, list); | |
949 | list_del(&mc->list); | |
3c86aa70 EC |
950 | switch (rdma_port_get_link_layer(id_priv->cma_dev->device, id_priv->id.port_num)) { |
951 | case IB_LINK_LAYER_INFINIBAND: | |
952 | ib_sa_free_multicast(mc->multicast.ib); | |
953 | kfree(mc); | |
954 | break; | |
955 | case IB_LINK_LAYER_ETHERNET: | |
956 | kref_put(&mc->mcref, release_mc); | |
957 | break; | |
958 | default: | |
959 | break; | |
960 | } | |
c8f6a362 SH |
961 | } |
962 | } | |
963 | ||
e51060f0 SH |
964 | void rdma_destroy_id(struct rdma_cm_id *id) |
965 | { | |
966 | struct rdma_id_private *id_priv; | |
550e5ca7 | 967 | enum rdma_cm_state state; |
e51060f0 SH |
968 | |
969 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 970 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
971 | cma_cancel_operation(id_priv, state); |
972 | ||
a396d43a SH |
973 | /* |
974 | * Wait for any active callback to finish. New callbacks will find | |
975 | * the id_priv state set to destroying and abort. | |
976 | */ | |
977 | mutex_lock(&id_priv->handler_mutex); | |
978 | mutex_unlock(&id_priv->handler_mutex); | |
979 | ||
e51060f0 | 980 | if (id_priv->cma_dev) { |
3c86aa70 | 981 | switch (rdma_node_get_transport(id_priv->id.device->node_type)) { |
07ebafba | 982 | case RDMA_TRANSPORT_IB: |
0c9361fc | 983 | if (id_priv->cm_id.ib) |
e51060f0 SH |
984 | ib_destroy_cm_id(id_priv->cm_id.ib); |
985 | break; | |
07ebafba | 986 | case RDMA_TRANSPORT_IWARP: |
0c9361fc | 987 | if (id_priv->cm_id.iw) |
07ebafba TT |
988 | iw_destroy_cm_id(id_priv->cm_id.iw); |
989 | break; | |
e51060f0 SH |
990 | default: |
991 | break; | |
992 | } | |
c8f6a362 | 993 | cma_leave_mc_groups(id_priv); |
a396d43a | 994 | cma_release_dev(id_priv); |
e51060f0 SH |
995 | } |
996 | ||
997 | cma_release_port(id_priv); | |
998 | cma_deref_id(id_priv); | |
999 | wait_for_completion(&id_priv->comp); | |
1000 | ||
d02d1f53 SH |
1001 | if (id_priv->internal_id) |
1002 | cma_deref_id(id_priv->id.context); | |
1003 | ||
e51060f0 SH |
1004 | kfree(id_priv->id.route.path_rec); |
1005 | kfree(id_priv); | |
1006 | } | |
1007 | EXPORT_SYMBOL(rdma_destroy_id); | |
1008 | ||
1009 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
1010 | { | |
1011 | int ret; | |
1012 | ||
5851bb89 | 1013 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
1014 | if (ret) |
1015 | goto reject; | |
1016 | ||
5851bb89 | 1017 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
1018 | if (ret) |
1019 | goto reject; | |
1020 | ||
1021 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
1022 | if (ret) | |
1023 | goto reject; | |
1024 | ||
1025 | return 0; | |
1026 | reject: | |
c5483388 | 1027 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
1028 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
1029 | NULL, 0, NULL, 0); | |
1030 | return ret; | |
1031 | } | |
1032 | ||
1033 | static int cma_verify_rep(struct rdma_id_private *id_priv, void *data) | |
1034 | { | |
1035 | if (id_priv->id.ps == RDMA_PS_SDP && | |
1036 | sdp_get_majv(((struct sdp_hah *) data)->sdp_version) != | |
1037 | SDP_MAJ_VERSION) | |
1038 | return -EINVAL; | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
a1b1b61f SH |
1043 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
1044 | struct ib_cm_rep_event_param *rep_data, | |
1045 | void *private_data) | |
1046 | { | |
1047 | event->param.conn.private_data = private_data; | |
1048 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
1049 | event->param.conn.responder_resources = rep_data->responder_resources; | |
1050 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
1051 | event->param.conn.flow_control = rep_data->flow_control; | |
1052 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
1053 | event->param.conn.srq = rep_data->srq; | |
1054 | event->param.conn.qp_num = rep_data->remote_qpn; | |
1055 | } | |
1056 | ||
e51060f0 SH |
1057 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1058 | { | |
1059 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
1060 | struct rdma_cm_event event; |
1061 | int ret = 0; | |
e51060f0 | 1062 | |
38ca83a5 | 1063 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1064 | cma_disable_callback(id_priv, RDMA_CM_CONNECT)) || |
38ca83a5 | 1065 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1066 | cma_disable_callback(id_priv, RDMA_CM_DISCONNECT))) |
8aa08602 | 1067 | return 0; |
e51060f0 | 1068 | |
a1b1b61f | 1069 | memset(&event, 0, sizeof event); |
e51060f0 SH |
1070 | switch (ib_event->event) { |
1071 | case IB_CM_REQ_ERROR: | |
1072 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1073 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1074 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1075 | break; |
1076 | case IB_CM_REP_RECEIVED: | |
a1b1b61f SH |
1077 | event.status = cma_verify_rep(id_priv, ib_event->private_data); |
1078 | if (event.status) | |
1079 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
e51060f0 | 1080 | else if (id_priv->id.qp && id_priv->id.ps != RDMA_PS_SDP) { |
a1b1b61f SH |
1081 | event.status = cma_rep_recv(id_priv); |
1082 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1083 | RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 | 1084 | } else |
a1b1b61f SH |
1085 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
1086 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, | |
1087 | ib_event->private_data); | |
e51060f0 SH |
1088 | break; |
1089 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1090 | case IB_CM_USER_ESTABLISHED: |
1091 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1092 | break; |
1093 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1094 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1095 | case IB_CM_DREQ_RECEIVED: |
1096 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1097 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1098 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1099 | goto out; |
a1b1b61f | 1100 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1101 | break; |
1102 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1103 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1104 | break; | |
e51060f0 SH |
1105 | case IB_CM_MRA_RECEIVED: |
1106 | /* ignore event */ | |
1107 | goto out; | |
1108 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 1109 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1110 | event.status = ib_event->param.rej_rcvd.reason; |
1111 | event.event = RDMA_CM_EVENT_REJECTED; | |
1112 | event.param.conn.private_data = ib_event->private_data; | |
1113 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1114 | break; |
1115 | default: | |
468f2239 | 1116 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1117 | ib_event->event); |
1118 | goto out; | |
1119 | } | |
1120 | ||
a1b1b61f | 1121 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1122 | if (ret) { |
1123 | /* Destroy the CM ID by returning a non-zero value. */ | |
1124 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1125 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1126 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1127 | rdma_destroy_id(&id_priv->id); |
1128 | return ret; | |
1129 | } | |
1130 | out: | |
de910bd9 | 1131 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1132 | return ret; |
1133 | } | |
1134 | ||
628e5f6d SH |
1135 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
1136 | struct ib_cm_event *ib_event) | |
e51060f0 SH |
1137 | { |
1138 | struct rdma_id_private *id_priv; | |
1139 | struct rdma_cm_id *id; | |
1140 | struct rdma_route *rt; | |
1141 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1142 | __be16 port; |
e51060f0 | 1143 | u8 ip_ver; |
64c5e613 | 1144 | int ret; |
e51060f0 | 1145 | |
3f168d2b KK |
1146 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1147 | &ip_ver, &port, &src, &dst)) | |
0c9361fc | 1148 | return NULL; |
3f168d2b | 1149 | |
e51060f0 | 1150 | id = rdma_create_id(listen_id->event_handler, listen_id->context, |
b26f9b99 | 1151 | listen_id->ps, ib_event->param.req_rcvd.qp_type); |
e51060f0 | 1152 | if (IS_ERR(id)) |
0c9361fc | 1153 | return NULL; |
3f168d2b | 1154 | |
f4753834 | 1155 | id_priv = container_of(id, struct rdma_id_private, id); |
3f168d2b KK |
1156 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, |
1157 | ip_ver, port, src, dst); | |
e51060f0 SH |
1158 | |
1159 | rt = &id->route; | |
1160 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1161 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1162 | GFP_KERNEL); | |
e51060f0 | 1163 | if (!rt->path_rec) |
0c9361fc | 1164 | goto err; |
e51060f0 | 1165 | |
e51060f0 SH |
1166 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1167 | if (rt->num_paths == 2) | |
1168 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1169 | ||
f4753834 | 1170 | if (cma_any_addr(cma_src_addr(id_priv))) { |
6f8372b6 SH |
1171 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; |
1172 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
46ea5061 | 1173 | ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); |
6f8372b6 | 1174 | } else { |
f4753834 | 1175 | ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr); |
6f8372b6 | 1176 | if (ret) |
0c9361fc | 1177 | goto err; |
6f8372b6 SH |
1178 | } |
1179 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 | 1180 | |
550e5ca7 | 1181 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 1182 | return id_priv; |
3f168d2b | 1183 | |
3f168d2b | 1184 | err: |
0c9361fc | 1185 | rdma_destroy_id(id); |
e51060f0 SH |
1186 | return NULL; |
1187 | } | |
1188 | ||
628e5f6d SH |
1189 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
1190 | struct ib_cm_event *ib_event) | |
1191 | { | |
1192 | struct rdma_id_private *id_priv; | |
1193 | struct rdma_cm_id *id; | |
1194 | union cma_ip_addr *src, *dst; | |
1b90c137 | 1195 | __be16 port; |
628e5f6d SH |
1196 | u8 ip_ver; |
1197 | int ret; | |
1198 | ||
1199 | id = rdma_create_id(listen_id->event_handler, listen_id->context, | |
b26f9b99 | 1200 | listen_id->ps, IB_QPT_UD); |
628e5f6d SH |
1201 | if (IS_ERR(id)) |
1202 | return NULL; | |
1203 | ||
f4753834 | 1204 | id_priv = container_of(id, struct rdma_id_private, id); |
628e5f6d SH |
1205 | if (cma_get_net_info(ib_event->private_data, listen_id->ps, |
1206 | &ip_ver, &port, &src, &dst)) | |
1207 | goto err; | |
1208 | ||
1209 | cma_save_net_info(&id->route.addr, &listen_id->route.addr, | |
1210 | ip_ver, port, src, dst); | |
1211 | ||
6f8372b6 | 1212 | if (!cma_any_addr((struct sockaddr *) &id->route.addr.src_addr)) { |
f4753834 | 1213 | ret = cma_translate_addr(cma_src_addr(id_priv), &id->route.addr.dev_addr); |
6f8372b6 SH |
1214 | if (ret) |
1215 | goto err; | |
1216 | } | |
628e5f6d | 1217 | |
550e5ca7 | 1218 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
1219 | return id_priv; |
1220 | err: | |
1221 | rdma_destroy_id(id); | |
1222 | return NULL; | |
1223 | } | |
1224 | ||
a1b1b61f SH |
1225 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1226 | struct ib_cm_req_event_param *req_data, | |
1227 | void *private_data, int offset) | |
1228 | { | |
1229 | event->param.conn.private_data = private_data + offset; | |
1230 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1231 | event->param.conn.responder_resources = req_data->responder_resources; | |
1232 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1233 | event->param.conn.flow_control = req_data->flow_control; | |
1234 | event->param.conn.retry_count = req_data->retry_count; | |
1235 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1236 | event->param.conn.srq = req_data->srq; | |
1237 | event->param.conn.qp_num = req_data->remote_qpn; | |
1238 | } | |
1239 | ||
9595480c HS |
1240 | static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) |
1241 | { | |
4dd81e89 | 1242 | return (((ib_event->event == IB_CM_REQ_RECEIVED) && |
9595480c HS |
1243 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || |
1244 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
1245 | (id->qp_type == IB_QPT_UD)) || | |
1246 | (!id->qp_type)); | |
1247 | } | |
1248 | ||
e51060f0 SH |
1249 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1250 | { | |
1251 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1252 | struct rdma_cm_event event; |
e51060f0 SH |
1253 | int offset, ret; |
1254 | ||
1255 | listen_id = cm_id->context; | |
9595480c HS |
1256 | if (!cma_check_req_qp_type(&listen_id->id, ib_event)) |
1257 | return -EINVAL; | |
1258 | ||
550e5ca7 | 1259 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1260 | return -ECONNABORTED; |
e51060f0 | 1261 | |
628e5f6d SH |
1262 | memset(&event, 0, sizeof event); |
1263 | offset = cma_user_data_offset(listen_id->id.ps); | |
1264 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
9595480c | 1265 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
628e5f6d SH |
1266 | conn_id = cma_new_udp_id(&listen_id->id, ib_event); |
1267 | event.param.ud.private_data = ib_event->private_data + offset; | |
1268 | event.param.ud.private_data_len = | |
1269 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1270 | } else { | |
1271 | conn_id = cma_new_conn_id(&listen_id->id, ib_event); | |
1272 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, | |
1273 | ib_event->private_data, offset); | |
1274 | } | |
e51060f0 SH |
1275 | if (!conn_id) { |
1276 | ret = -ENOMEM; | |
b6cec8aa | 1277 | goto err1; |
e51060f0 SH |
1278 | } |
1279 | ||
de910bd9 | 1280 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
07ebafba | 1281 | ret = cma_acquire_dev(conn_id); |
a1a733f6 | 1282 | if (ret) |
b6cec8aa | 1283 | goto err2; |
e51060f0 SH |
1284 | |
1285 | conn_id->cm_id.ib = cm_id; | |
1286 | cm_id->context = conn_id; | |
1287 | cm_id->cm_handler = cma_ib_handler; | |
1288 | ||
25ae21a1 SH |
1289 | /* |
1290 | * Protect against the user destroying conn_id from another thread | |
1291 | * until we're done accessing it. | |
1292 | */ | |
1293 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1294 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
b6cec8aa SH |
1295 | if (ret) |
1296 | goto err3; | |
1297 | ||
1298 | /* | |
1299 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1300 | * while we're accessing the cm_id. | |
1301 | */ | |
1302 | mutex_lock(&lock); | |
1303 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && (conn_id->id.qp_type != IB_QPT_UD)) | |
1304 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); | |
1305 | mutex_unlock(&lock); | |
1306 | mutex_unlock(&conn_id->handler_mutex); | |
1307 | mutex_unlock(&listen_id->handler_mutex); | |
25ae21a1 | 1308 | cma_deref_id(conn_id); |
b6cec8aa | 1309 | return 0; |
a1a733f6 | 1310 | |
b6cec8aa SH |
1311 | err3: |
1312 | cma_deref_id(conn_id); | |
a1a733f6 KK |
1313 | /* Destroy the CM ID by returning a non-zero value. */ |
1314 | conn_id->cm_id.ib = NULL; | |
b6cec8aa | 1315 | err2: |
550e5ca7 | 1316 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1317 | mutex_unlock(&conn_id->handler_mutex); |
b6cec8aa | 1318 | err1: |
de910bd9 | 1319 | mutex_unlock(&listen_id->handler_mutex); |
b6cec8aa SH |
1320 | if (conn_id) |
1321 | rdma_destroy_id(&conn_id->id); | |
e51060f0 SH |
1322 | return ret; |
1323 | } | |
1324 | ||
1325 | static __be64 cma_get_service_id(enum rdma_port_space ps, struct sockaddr *addr) | |
1326 | { | |
628e5f6d | 1327 | return cpu_to_be64(((u64)ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 SH |
1328 | } |
1329 | ||
1330 | static void cma_set_compare_data(enum rdma_port_space ps, struct sockaddr *addr, | |
1331 | struct ib_cm_compare_data *compare) | |
1332 | { | |
1333 | struct cma_hdr *cma_data, *cma_mask; | |
1334 | struct sdp_hh *sdp_data, *sdp_mask; | |
1b90c137 | 1335 | __be32 ip4_addr; |
e51060f0 SH |
1336 | struct in6_addr ip6_addr; |
1337 | ||
1338 | memset(compare, 0, sizeof *compare); | |
1339 | cma_data = (void *) compare->data; | |
1340 | cma_mask = (void *) compare->mask; | |
1341 | sdp_data = (void *) compare->data; | |
1342 | sdp_mask = (void *) compare->mask; | |
1343 | ||
1344 | switch (addr->sa_family) { | |
1345 | case AF_INET: | |
1346 | ip4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | |
1347 | if (ps == RDMA_PS_SDP) { | |
1348 | sdp_set_ip_ver(sdp_data, 4); | |
1349 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1350 | sdp_data->dst_addr.ip4.addr = ip4_addr; | |
1b90c137 | 1351 | sdp_mask->dst_addr.ip4.addr = htonl(~0); |
e51060f0 SH |
1352 | } else { |
1353 | cma_set_ip_ver(cma_data, 4); | |
1354 | cma_set_ip_ver(cma_mask, 0xF); | |
406b6a25 SH |
1355 | if (!cma_any_addr(addr)) { |
1356 | cma_data->dst_addr.ip4.addr = ip4_addr; | |
1357 | cma_mask->dst_addr.ip4.addr = htonl(~0); | |
1358 | } | |
e51060f0 SH |
1359 | } |
1360 | break; | |
1361 | case AF_INET6: | |
1362 | ip6_addr = ((struct sockaddr_in6 *) addr)->sin6_addr; | |
1363 | if (ps == RDMA_PS_SDP) { | |
1364 | sdp_set_ip_ver(sdp_data, 6); | |
1365 | sdp_set_ip_ver(sdp_mask, 0xF); | |
1366 | sdp_data->dst_addr.ip6 = ip6_addr; | |
1367 | memset(&sdp_mask->dst_addr.ip6, 0xFF, | |
1368 | sizeof sdp_mask->dst_addr.ip6); | |
1369 | } else { | |
1370 | cma_set_ip_ver(cma_data, 6); | |
1371 | cma_set_ip_ver(cma_mask, 0xF); | |
406b6a25 SH |
1372 | if (!cma_any_addr(addr)) { |
1373 | cma_data->dst_addr.ip6 = ip6_addr; | |
1374 | memset(&cma_mask->dst_addr.ip6, 0xFF, | |
1375 | sizeof cma_mask->dst_addr.ip6); | |
1376 | } | |
e51060f0 SH |
1377 | } |
1378 | break; | |
1379 | default: | |
1380 | break; | |
1381 | } | |
1382 | } | |
1383 | ||
07ebafba TT |
1384 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1385 | { | |
1386 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1387 | struct rdma_cm_event event; |
07ebafba TT |
1388 | struct sockaddr_in *sin; |
1389 | int ret = 0; | |
1390 | ||
550e5ca7 | 1391 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
be65f086 | 1392 | return 0; |
07ebafba | 1393 | |
be65f086 | 1394 | memset(&event, 0, sizeof event); |
07ebafba TT |
1395 | switch (iw_event->event) { |
1396 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1397 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1398 | break; |
1399 | case IW_CM_EVENT_CONNECT_REPLY: | |
f4753834 | 1400 | sin = (struct sockaddr_in *) cma_src_addr(id_priv); |
07ebafba | 1401 | *sin = iw_event->local_addr; |
f4753834 | 1402 | sin = (struct sockaddr_in *) cma_dst_addr(id_priv); |
07ebafba | 1403 | *sin = iw_event->remote_addr; |
881a045f SW |
1404 | switch (iw_event->status) { |
1405 | case 0: | |
a1b1b61f | 1406 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1407 | event.param.conn.initiator_depth = iw_event->ird; |
1408 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
1409 | break; |
1410 | case -ECONNRESET: | |
1411 | case -ECONNREFUSED: | |
1412 | event.event = RDMA_CM_EVENT_REJECTED; | |
1413 | break; | |
1414 | case -ETIMEDOUT: | |
1415 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1416 | break; | |
1417 | default: | |
1418 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1419 | break; | |
1420 | } | |
07ebafba TT |
1421 | break; |
1422 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1423 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1424 | event.param.conn.initiator_depth = iw_event->ird; |
1425 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
1426 | break; |
1427 | default: | |
1428 | BUG_ON(1); | |
1429 | } | |
1430 | ||
a1b1b61f SH |
1431 | event.status = iw_event->status; |
1432 | event.param.conn.private_data = iw_event->private_data; | |
1433 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1434 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1435 | if (ret) { |
1436 | /* Destroy the CM ID by returning a non-zero value. */ | |
1437 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 1438 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1439 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1440 | rdma_destroy_id(&id_priv->id); |
1441 | return ret; | |
1442 | } | |
1443 | ||
de910bd9 | 1444 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1445 | return ret; |
1446 | } | |
1447 | ||
1448 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1449 | struct iw_cm_event *iw_event) | |
1450 | { | |
1451 | struct rdma_cm_id *new_cm_id; | |
1452 | struct rdma_id_private *listen_id, *conn_id; | |
1453 | struct sockaddr_in *sin; | |
1454 | struct net_device *dev = NULL; | |
a1b1b61f | 1455 | struct rdma_cm_event event; |
07ebafba | 1456 | int ret; |
8d8293cf | 1457 | struct ib_device_attr attr; |
07ebafba TT |
1458 | |
1459 | listen_id = cm_id->context; | |
550e5ca7 | 1460 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1461 | return -ECONNABORTED; |
07ebafba TT |
1462 | |
1463 | /* Create a new RDMA id for the new IW CM ID */ | |
1464 | new_cm_id = rdma_create_id(listen_id->id.event_handler, | |
1465 | listen_id->id.context, | |
b26f9b99 | 1466 | RDMA_PS_TCP, IB_QPT_RC); |
10f32065 | 1467 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1468 | ret = -ENOMEM; |
1469 | goto out; | |
1470 | } | |
1471 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1472 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 1473 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 1474 | |
1ab35276 | 1475 | dev = ip_dev_find(&init_net, iw_event->local_addr.sin_addr.s_addr); |
07ebafba TT |
1476 | if (!dev) { |
1477 | ret = -EADDRNOTAVAIL; | |
de910bd9 | 1478 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1479 | rdma_destroy_id(new_cm_id); |
1480 | goto out; | |
1481 | } | |
1482 | ret = rdma_copy_addr(&conn_id->id.route.addr.dev_addr, dev, NULL); | |
1483 | if (ret) { | |
de910bd9 | 1484 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1485 | rdma_destroy_id(new_cm_id); |
1486 | goto out; | |
1487 | } | |
1488 | ||
1489 | ret = cma_acquire_dev(conn_id); | |
1490 | if (ret) { | |
de910bd9 | 1491 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1492 | rdma_destroy_id(new_cm_id); |
1493 | goto out; | |
1494 | } | |
1495 | ||
1496 | conn_id->cm_id.iw = cm_id; | |
1497 | cm_id->context = conn_id; | |
1498 | cm_id->cm_handler = cma_iw_handler; | |
1499 | ||
f4753834 | 1500 | sin = (struct sockaddr_in *) cma_src_addr(conn_id); |
07ebafba | 1501 | *sin = iw_event->local_addr; |
f4753834 | 1502 | sin = (struct sockaddr_in *) cma_dst_addr(conn_id); |
07ebafba TT |
1503 | *sin = iw_event->remote_addr; |
1504 | ||
8d8293cf SW |
1505 | ret = ib_query_device(conn_id->id.device, &attr); |
1506 | if (ret) { | |
de910bd9 | 1507 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1508 | rdma_destroy_id(new_cm_id); |
1509 | goto out; | |
1510 | } | |
1511 | ||
a1b1b61f SH |
1512 | memset(&event, 0, sizeof event); |
1513 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1514 | event.param.conn.private_data = iw_event->private_data; | |
1515 | event.param.conn.private_data_len = iw_event->private_data_len; | |
3ebeebc3 KS |
1516 | event.param.conn.initiator_depth = iw_event->ird; |
1517 | event.param.conn.responder_resources = iw_event->ord; | |
25ae21a1 SH |
1518 | |
1519 | /* | |
1520 | * Protect against the user destroying conn_id from another thread | |
1521 | * until we're done accessing it. | |
1522 | */ | |
1523 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1524 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1525 | if (ret) { |
1526 | /* User wants to destroy the CM ID */ | |
1527 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 1528 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1529 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1530 | cma_deref_id(conn_id); |
07ebafba | 1531 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1532 | goto out; |
07ebafba TT |
1533 | } |
1534 | ||
de910bd9 | 1535 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1536 | cma_deref_id(conn_id); |
de910bd9 | 1537 | |
07ebafba TT |
1538 | out: |
1539 | if (dev) | |
1540 | dev_put(dev); | |
de910bd9 | 1541 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1542 | return ret; |
1543 | } | |
1544 | ||
e51060f0 SH |
1545 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1546 | { | |
1547 | struct ib_cm_compare_data compare_data; | |
1548 | struct sockaddr *addr; | |
0c9361fc | 1549 | struct ib_cm_id *id; |
e51060f0 SH |
1550 | __be64 svc_id; |
1551 | int ret; | |
1552 | ||
0c9361fc JM |
1553 | id = ib_create_cm_id(id_priv->id.device, cma_req_handler, id_priv); |
1554 | if (IS_ERR(id)) | |
1555 | return PTR_ERR(id); | |
1556 | ||
1557 | id_priv->cm_id.ib = id; | |
e51060f0 | 1558 | |
f4753834 | 1559 | addr = cma_src_addr(id_priv); |
e51060f0 | 1560 | svc_id = cma_get_service_id(id_priv->id.ps, addr); |
406b6a25 | 1561 | if (cma_any_addr(addr) && !id_priv->afonly) |
e51060f0 SH |
1562 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, NULL); |
1563 | else { | |
1564 | cma_set_compare_data(id_priv->id.ps, addr, &compare_data); | |
1565 | ret = ib_cm_listen(id_priv->cm_id.ib, svc_id, 0, &compare_data); | |
1566 | } | |
1567 | ||
1568 | if (ret) { | |
1569 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
1570 | id_priv->cm_id.ib = NULL; | |
1571 | } | |
1572 | ||
1573 | return ret; | |
1574 | } | |
1575 | ||
07ebafba TT |
1576 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1577 | { | |
1578 | int ret; | |
1579 | struct sockaddr_in *sin; | |
0c9361fc JM |
1580 | struct iw_cm_id *id; |
1581 | ||
1582 | id = iw_create_cm_id(id_priv->id.device, | |
1583 | iw_conn_req_handler, | |
1584 | id_priv); | |
1585 | if (IS_ERR(id)) | |
1586 | return PTR_ERR(id); | |
07ebafba | 1587 | |
0c9361fc | 1588 | id_priv->cm_id.iw = id; |
07ebafba | 1589 | |
f4753834 | 1590 | sin = (struct sockaddr_in *) cma_src_addr(id_priv); |
07ebafba TT |
1591 | id_priv->cm_id.iw->local_addr = *sin; |
1592 | ||
1593 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
1594 | ||
1595 | if (ret) { | |
1596 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
1597 | id_priv->cm_id.iw = NULL; | |
1598 | } | |
1599 | ||
1600 | return ret; | |
1601 | } | |
1602 | ||
e51060f0 SH |
1603 | static int cma_listen_handler(struct rdma_cm_id *id, |
1604 | struct rdma_cm_event *event) | |
1605 | { | |
1606 | struct rdma_id_private *id_priv = id->context; | |
1607 | ||
1608 | id->context = id_priv->id.context; | |
1609 | id->event_handler = id_priv->id.event_handler; | |
1610 | return id_priv->id.event_handler(id, event); | |
1611 | } | |
1612 | ||
1613 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
1614 | struct cma_device *cma_dev) | |
1615 | { | |
1616 | struct rdma_id_private *dev_id_priv; | |
1617 | struct rdma_cm_id *id; | |
1618 | int ret; | |
1619 | ||
b26f9b99 SH |
1620 | id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps, |
1621 | id_priv->id.qp_type); | |
e51060f0 SH |
1622 | if (IS_ERR(id)) |
1623 | return; | |
1624 | ||
1625 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
1626 | ||
550e5ca7 | 1627 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
f4753834 SH |
1628 | memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv), |
1629 | rdma_addr_size(cma_src_addr(id_priv))); | |
e51060f0 SH |
1630 | |
1631 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
1632 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
1633 | atomic_inc(&id_priv->refcount); |
1634 | dev_id_priv->internal_id = 1; | |
5b0ec991 | 1635 | dev_id_priv->afonly = id_priv->afonly; |
e51060f0 SH |
1636 | |
1637 | ret = rdma_listen(id, id_priv->backlog); | |
1638 | if (ret) | |
d02d1f53 | 1639 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 1640 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
1641 | } |
1642 | ||
1643 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
1644 | { | |
1645 | struct cma_device *cma_dev; | |
1646 | ||
1647 | mutex_lock(&lock); | |
1648 | list_add_tail(&id_priv->list, &listen_any_list); | |
1649 | list_for_each_entry(cma_dev, &dev_list, list) | |
1650 | cma_listen_on_dev(id_priv, cma_dev); | |
1651 | mutex_unlock(&lock); | |
1652 | } | |
1653 | ||
a81c994d SH |
1654 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
1655 | { | |
1656 | struct rdma_id_private *id_priv; | |
1657 | ||
1658 | id_priv = container_of(id, struct rdma_id_private, id); | |
1659 | id_priv->tos = (u8) tos; | |
1660 | } | |
1661 | EXPORT_SYMBOL(rdma_set_service_type); | |
1662 | ||
e51060f0 SH |
1663 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
1664 | void *context) | |
1665 | { | |
1666 | struct cma_work *work = context; | |
1667 | struct rdma_route *route; | |
1668 | ||
1669 | route = &work->id->id.route; | |
1670 | ||
1671 | if (!status) { | |
1672 | route->num_paths = 1; | |
1673 | *route->path_rec = *path_rec; | |
1674 | } else { | |
550e5ca7 NM |
1675 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1676 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 1677 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 1678 | work->event.status = status; |
e51060f0 SH |
1679 | } |
1680 | ||
1681 | queue_work(cma_wq, &work->work); | |
1682 | } | |
1683 | ||
1684 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
1685 | struct cma_work *work) | |
1686 | { | |
f4753834 | 1687 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 1688 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
1689 | ib_sa_comp_mask comp_mask; |
1690 | struct sockaddr_in6 *sin6; | |
e51060f0 SH |
1691 | |
1692 | memset(&path_rec, 0, sizeof path_rec); | |
f4753834 SH |
1693 | rdma_addr_get_sgid(dev_addr, &path_rec.sgid); |
1694 | rdma_addr_get_dgid(dev_addr, &path_rec.dgid); | |
1695 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
e51060f0 | 1696 | path_rec.numb_path = 1; |
962063e6 | 1697 | path_rec.reversible = 1; |
f4753834 | 1698 | path_rec.service_id = cma_get_service_id(id_priv->id.ps, cma_dst_addr(id_priv)); |
a81c994d SH |
1699 | |
1700 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
1701 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
1702 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
1703 | ||
f4753834 | 1704 | if (cma_family(id_priv) == AF_INET) { |
a81c994d SH |
1705 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
1706 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
1707 | } else { | |
f4753834 | 1708 | sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
a81c994d SH |
1709 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); |
1710 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
1711 | } | |
e51060f0 | 1712 | |
c1a0b23b | 1713 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
1714 | id_priv->id.port_num, &path_rec, |
1715 | comp_mask, timeout_ms, | |
1716 | GFP_KERNEL, cma_query_handler, | |
1717 | work, &id_priv->query); | |
e51060f0 SH |
1718 | |
1719 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
1720 | } | |
1721 | ||
c4028958 | 1722 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 1723 | { |
c4028958 | 1724 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
1725 | struct rdma_id_private *id_priv = work->id; |
1726 | int destroy = 0; | |
1727 | ||
de910bd9 | 1728 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
1729 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
1730 | goto out; | |
1731 | ||
1732 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 1733 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1734 | destroy = 1; |
1735 | } | |
1736 | out: | |
de910bd9 | 1737 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1738 | cma_deref_id(id_priv); |
1739 | if (destroy) | |
1740 | rdma_destroy_id(&id_priv->id); | |
1741 | kfree(work); | |
1742 | } | |
1743 | ||
dd5bdff8 OG |
1744 | static void cma_ndev_work_handler(struct work_struct *_work) |
1745 | { | |
1746 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
1747 | struct rdma_id_private *id_priv = work->id; | |
1748 | int destroy = 0; | |
1749 | ||
1750 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
1751 | if (id_priv->state == RDMA_CM_DESTROYING || |
1752 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
1753 | goto out; |
1754 | ||
1755 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 1756 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
1757 | destroy = 1; |
1758 | } | |
1759 | ||
1760 | out: | |
1761 | mutex_unlock(&id_priv->handler_mutex); | |
1762 | cma_deref_id(id_priv); | |
1763 | if (destroy) | |
1764 | rdma_destroy_id(&id_priv->id); | |
1765 | kfree(work); | |
1766 | } | |
1767 | ||
e51060f0 SH |
1768 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
1769 | { | |
1770 | struct rdma_route *route = &id_priv->id.route; | |
1771 | struct cma_work *work; | |
1772 | int ret; | |
1773 | ||
1774 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1775 | if (!work) | |
1776 | return -ENOMEM; | |
1777 | ||
1778 | work->id = id_priv; | |
c4028958 | 1779 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
1780 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1781 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
e51060f0 SH |
1782 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1783 | ||
1784 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1785 | if (!route->path_rec) { | |
1786 | ret = -ENOMEM; | |
1787 | goto err1; | |
1788 | } | |
1789 | ||
1790 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
1791 | if (ret) | |
1792 | goto err2; | |
1793 | ||
1794 | return 0; | |
1795 | err2: | |
1796 | kfree(route->path_rec); | |
1797 | route->path_rec = NULL; | |
1798 | err1: | |
1799 | kfree(work); | |
1800 | return ret; | |
1801 | } | |
1802 | ||
1803 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
1804 | struct ib_sa_path_rec *path_rec, int num_paths) | |
1805 | { | |
1806 | struct rdma_id_private *id_priv; | |
1807 | int ret; | |
1808 | ||
1809 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
1810 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
1811 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
1812 | return -EINVAL; |
1813 | ||
9893e742 JL |
1814 | id->route.path_rec = kmemdup(path_rec, sizeof *path_rec * num_paths, |
1815 | GFP_KERNEL); | |
e51060f0 SH |
1816 | if (!id->route.path_rec) { |
1817 | ret = -ENOMEM; | |
1818 | goto err; | |
1819 | } | |
1820 | ||
ae2d9293 | 1821 | id->route.num_paths = num_paths; |
e51060f0 SH |
1822 | return 0; |
1823 | err: | |
550e5ca7 | 1824 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
1825 | return ret; |
1826 | } | |
1827 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
1828 | ||
07ebafba TT |
1829 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
1830 | { | |
1831 | struct cma_work *work; | |
1832 | ||
1833 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
1834 | if (!work) | |
1835 | return -ENOMEM; | |
1836 | ||
1837 | work->id = id_priv; | |
c4028958 | 1838 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
1839 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1840 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
07ebafba TT |
1841 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1842 | queue_work(cma_wq, &work->work); | |
1843 | return 0; | |
1844 | } | |
1845 | ||
3c86aa70 EC |
1846 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
1847 | { | |
1848 | struct rdma_route *route = &id_priv->id.route; | |
1849 | struct rdma_addr *addr = &route->addr; | |
1850 | struct cma_work *work; | |
1851 | int ret; | |
3c86aa70 | 1852 | struct net_device *ndev = NULL; |
af7bd463 | 1853 | u16 vid; |
3c86aa70 | 1854 | |
3c86aa70 EC |
1855 | work = kzalloc(sizeof *work, GFP_KERNEL); |
1856 | if (!work) | |
1857 | return -ENOMEM; | |
1858 | ||
1859 | work->id = id_priv; | |
1860 | INIT_WORK(&work->work, cma_work_handler); | |
1861 | ||
1862 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); | |
1863 | if (!route->path_rec) { | |
1864 | ret = -ENOMEM; | |
1865 | goto err1; | |
1866 | } | |
1867 | ||
1868 | route->num_paths = 1; | |
1869 | ||
3c86aa70 EC |
1870 | if (addr->dev_addr.bound_dev_if) |
1871 | ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); | |
1872 | if (!ndev) { | |
1873 | ret = -ENODEV; | |
1874 | goto err2; | |
1875 | } | |
1876 | ||
af7bd463 EC |
1877 | vid = rdma_vlan_dev_vlan_id(ndev); |
1878 | ||
1879 | iboe_mac_vlan_to_ll(&route->path_rec->sgid, addr->dev_addr.src_dev_addr, vid); | |
1880 | iboe_mac_vlan_to_ll(&route->path_rec->dgid, addr->dev_addr.dst_dev_addr, vid); | |
1881 | ||
1882 | route->path_rec->hop_limit = 1; | |
1883 | route->path_rec->reversible = 1; | |
1884 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
1885 | route->path_rec->mtu_selector = IB_SA_EQ; | |
366cddb4 AV |
1886 | route->path_rec->sl = netdev_get_prio_tc_map( |
1887 | ndev->priv_flags & IFF_802_1Q_VLAN ? | |
1888 | vlan_dev_real_dev(ndev) : ndev, | |
1889 | rt_tos2priority(id_priv->tos)); | |
af7bd463 | 1890 | |
3c86aa70 EC |
1891 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
1892 | route->path_rec->rate_selector = IB_SA_EQ; | |
1893 | route->path_rec->rate = iboe_get_rate(ndev); | |
1894 | dev_put(ndev); | |
1895 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
1896 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
1897 | if (!route->path_rec->mtu) { | |
1898 | ret = -EINVAL; | |
1899 | goto err2; | |
1900 | } | |
1901 | ||
550e5ca7 NM |
1902 | work->old_state = RDMA_CM_ROUTE_QUERY; |
1903 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
3c86aa70 EC |
1904 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
1905 | work->event.status = 0; | |
1906 | ||
1907 | queue_work(cma_wq, &work->work); | |
1908 | ||
1909 | return 0; | |
1910 | ||
1911 | err2: | |
1912 | kfree(route->path_rec); | |
1913 | route->path_rec = NULL; | |
1914 | err1: | |
1915 | kfree(work); | |
1916 | return ret; | |
1917 | } | |
1918 | ||
e51060f0 SH |
1919 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
1920 | { | |
1921 | struct rdma_id_private *id_priv; | |
1922 | int ret; | |
1923 | ||
1924 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1925 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
1926 | return -EINVAL; |
1927 | ||
1928 | atomic_inc(&id_priv->refcount); | |
07ebafba TT |
1929 | switch (rdma_node_get_transport(id->device->node_type)) { |
1930 | case RDMA_TRANSPORT_IB: | |
3c86aa70 EC |
1931 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { |
1932 | case IB_LINK_LAYER_INFINIBAND: | |
1933 | ret = cma_resolve_ib_route(id_priv, timeout_ms); | |
1934 | break; | |
1935 | case IB_LINK_LAYER_ETHERNET: | |
1936 | ret = cma_resolve_iboe_route(id_priv); | |
1937 | break; | |
1938 | default: | |
1939 | ret = -ENOSYS; | |
1940 | } | |
e51060f0 | 1941 | break; |
07ebafba TT |
1942 | case RDMA_TRANSPORT_IWARP: |
1943 | ret = cma_resolve_iw_route(id_priv, timeout_ms); | |
1944 | break; | |
e51060f0 SH |
1945 | default: |
1946 | ret = -ENOSYS; | |
1947 | break; | |
1948 | } | |
1949 | if (ret) | |
1950 | goto err; | |
1951 | ||
1952 | return 0; | |
1953 | err: | |
550e5ca7 | 1954 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
1955 | cma_deref_id(id_priv); |
1956 | return ret; | |
1957 | } | |
1958 | EXPORT_SYMBOL(rdma_resolve_route); | |
1959 | ||
6a3e362d SH |
1960 | static void cma_set_loopback(struct sockaddr *addr) |
1961 | { | |
1962 | switch (addr->sa_family) { | |
1963 | case AF_INET: | |
1964 | ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1965 | break; | |
1966 | case AF_INET6: | |
1967 | ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr, | |
1968 | 0, 0, 0, htonl(1)); | |
1969 | break; | |
1970 | default: | |
1971 | ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr, | |
1972 | 0, 0, 0, htonl(1)); | |
1973 | break; | |
1974 | } | |
1975 | } | |
1976 | ||
e51060f0 SH |
1977 | static int cma_bind_loopback(struct rdma_id_private *id_priv) |
1978 | { | |
b0569e40 | 1979 | struct cma_device *cma_dev, *cur_dev; |
e51060f0 | 1980 | struct ib_port_attr port_attr; |
f0ee3404 | 1981 | union ib_gid gid; |
e51060f0 SH |
1982 | u16 pkey; |
1983 | int ret; | |
1984 | u8 p; | |
1985 | ||
b0569e40 | 1986 | cma_dev = NULL; |
e51060f0 | 1987 | mutex_lock(&lock); |
b0569e40 SH |
1988 | list_for_each_entry(cur_dev, &dev_list, list) { |
1989 | if (cma_family(id_priv) == AF_IB && | |
1990 | rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB) | |
1991 | continue; | |
1992 | ||
1993 | if (!cma_dev) | |
1994 | cma_dev = cur_dev; | |
1995 | ||
1996 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { | |
1997 | if (!ib_query_port(cur_dev->device, p, &port_attr) && | |
1998 | port_attr.state == IB_PORT_ACTIVE) { | |
1999 | cma_dev = cur_dev; | |
2000 | goto port_found; | |
2001 | } | |
2002 | } | |
2003 | } | |
2004 | ||
2005 | if (!cma_dev) { | |
e82153b5 KK |
2006 | ret = -ENODEV; |
2007 | goto out; | |
2008 | } | |
e51060f0 | 2009 | |
e82153b5 | 2010 | p = 1; |
e51060f0 SH |
2011 | |
2012 | port_found: | |
f0ee3404 | 2013 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
2014 | if (ret) |
2015 | goto out; | |
2016 | ||
2017 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
2018 | if (ret) | |
2019 | goto out; | |
2020 | ||
6f8372b6 | 2021 | id_priv->id.route.addr.dev_addr.dev_type = |
3c86aa70 | 2022 | (rdma_port_get_link_layer(cma_dev->device, p) == IB_LINK_LAYER_INFINIBAND) ? |
6f8372b6 SH |
2023 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
2024 | ||
2025 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
2026 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
2027 | id_priv->id.port_num = p; | |
2028 | cma_attach_to_dev(id_priv, cma_dev); | |
f4753834 | 2029 | cma_set_loopback(cma_src_addr(id_priv)); |
e51060f0 SH |
2030 | out: |
2031 | mutex_unlock(&lock); | |
2032 | return ret; | |
2033 | } | |
2034 | ||
2035 | static void addr_handler(int status, struct sockaddr *src_addr, | |
2036 | struct rdma_dev_addr *dev_addr, void *context) | |
2037 | { | |
2038 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 2039 | struct rdma_cm_event event; |
e51060f0 | 2040 | |
a1b1b61f | 2041 | memset(&event, 0, sizeof event); |
de910bd9 | 2042 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
2043 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
2044 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 2045 | goto out; |
61a73c70 SH |
2046 | |
2047 | if (!status && !id_priv->cma_dev) | |
e51060f0 SH |
2048 | status = cma_acquire_dev(id_priv); |
2049 | ||
2050 | if (status) { | |
550e5ca7 NM |
2051 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2052 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 2053 | goto out; |
a1b1b61f SH |
2054 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
2055 | event.status = status; | |
e51060f0 | 2056 | } else { |
f4753834 | 2057 | memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr)); |
a1b1b61f | 2058 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 SH |
2059 | } |
2060 | ||
a1b1b61f | 2061 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 2062 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2063 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2064 | cma_deref_id(id_priv); |
2065 | rdma_destroy_id(&id_priv->id); | |
2066 | return; | |
2067 | } | |
2068 | out: | |
de910bd9 | 2069 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2070 | cma_deref_id(id_priv); |
2071 | } | |
2072 | ||
2073 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
2074 | { | |
2075 | struct cma_work *work; | |
f0ee3404 | 2076 | union ib_gid gid; |
e51060f0 SH |
2077 | int ret; |
2078 | ||
2079 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2080 | if (!work) | |
2081 | return -ENOMEM; | |
2082 | ||
2083 | if (!id_priv->cma_dev) { | |
2084 | ret = cma_bind_loopback(id_priv); | |
2085 | if (ret) | |
2086 | goto err; | |
2087 | } | |
2088 | ||
6f8372b6 SH |
2089 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
2090 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 2091 | |
e51060f0 | 2092 | work->id = id_priv; |
c4028958 | 2093 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2094 | work->old_state = RDMA_CM_ADDR_QUERY; |
2095 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 SH |
2096 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
2097 | queue_work(cma_wq, &work->work); | |
2098 | return 0; | |
2099 | err: | |
2100 | kfree(work); | |
2101 | return ret; | |
2102 | } | |
2103 | ||
2104 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2105 | struct sockaddr *dst_addr) | |
2106 | { | |
d14714df SH |
2107 | if (!src_addr || !src_addr->sa_family) { |
2108 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
2109 | if ((src_addr->sa_family = dst_addr->sa_family) == AF_INET6) { | |
2110 | ((struct sockaddr_in6 *) src_addr)->sin6_scope_id = | |
2111 | ((struct sockaddr_in6 *) dst_addr)->sin6_scope_id; | |
2112 | } | |
2113 | } | |
2114 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
2115 | } |
2116 | ||
2117 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2118 | struct sockaddr *dst_addr, int timeout_ms) | |
2119 | { | |
2120 | struct rdma_id_private *id_priv; | |
2121 | int ret; | |
2122 | ||
2123 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2124 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 SH |
2125 | ret = cma_bind_addr(id, src_addr, dst_addr); |
2126 | if (ret) | |
2127 | return ret; | |
2128 | } | |
2129 | ||
4ae7152e SH |
2130 | if (cma_family(id_priv) != dst_addr->sa_family) |
2131 | return -EINVAL; | |
2132 | ||
550e5ca7 | 2133 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
2134 | return -EINVAL; |
2135 | ||
2136 | atomic_inc(&id_priv->refcount); | |
f4753834 | 2137 | memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); |
e51060f0 SH |
2138 | if (cma_any_addr(dst_addr)) |
2139 | ret = cma_resolve_loopback(id_priv); | |
2140 | else | |
f4753834 | 2141 | ret = rdma_resolve_ip(&addr_client, cma_src_addr(id_priv), |
7a118df3 | 2142 | dst_addr, &id->route.addr.dev_addr, |
e51060f0 SH |
2143 | timeout_ms, addr_handler, id_priv); |
2144 | if (ret) | |
2145 | goto err; | |
2146 | ||
2147 | return 0; | |
2148 | err: | |
550e5ca7 | 2149 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
2150 | cma_deref_id(id_priv); |
2151 | return ret; | |
2152 | } | |
2153 | EXPORT_SYMBOL(rdma_resolve_addr); | |
2154 | ||
a9bb7912 HS |
2155 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
2156 | { | |
2157 | struct rdma_id_private *id_priv; | |
2158 | unsigned long flags; | |
2159 | int ret; | |
2160 | ||
2161 | id_priv = container_of(id, struct rdma_id_private, id); | |
2162 | spin_lock_irqsave(&id_priv->lock, flags); | |
c8dea2f9 | 2163 | if (reuse || id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2164 | id_priv->reuseaddr = reuse; |
2165 | ret = 0; | |
2166 | } else { | |
2167 | ret = -EINVAL; | |
2168 | } | |
2169 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2170 | return ret; | |
2171 | } | |
2172 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
2173 | ||
68602120 SH |
2174 | int rdma_set_afonly(struct rdma_cm_id *id, int afonly) |
2175 | { | |
2176 | struct rdma_id_private *id_priv; | |
2177 | unsigned long flags; | |
2178 | int ret; | |
2179 | ||
2180 | id_priv = container_of(id, struct rdma_id_private, id); | |
2181 | spin_lock_irqsave(&id_priv->lock, flags); | |
2182 | if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { | |
2183 | id_priv->options |= (1 << CMA_OPTION_AFONLY); | |
2184 | id_priv->afonly = afonly; | |
2185 | ret = 0; | |
2186 | } else { | |
2187 | ret = -EINVAL; | |
2188 | } | |
2189 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2190 | return ret; | |
2191 | } | |
2192 | EXPORT_SYMBOL(rdma_set_afonly); | |
2193 | ||
e51060f0 SH |
2194 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
2195 | struct rdma_id_private *id_priv) | |
2196 | { | |
58afdcb7 SH |
2197 | struct sockaddr *addr; |
2198 | struct sockaddr_ib *sib; | |
2199 | u64 sid, mask; | |
2200 | __be16 port; | |
e51060f0 | 2201 | |
f4753834 | 2202 | addr = cma_src_addr(id_priv); |
58afdcb7 SH |
2203 | port = htons(bind_list->port); |
2204 | ||
2205 | switch (addr->sa_family) { | |
2206 | case AF_INET: | |
2207 | ((struct sockaddr_in *) addr)->sin_port = port; | |
2208 | break; | |
2209 | case AF_INET6: | |
2210 | ((struct sockaddr_in6 *) addr)->sin6_port = port; | |
2211 | break; | |
2212 | case AF_IB: | |
2213 | sib = (struct sockaddr_ib *) addr; | |
2214 | sid = be64_to_cpu(sib->sib_sid); | |
2215 | mask = be64_to_cpu(sib->sib_sid_mask); | |
2216 | sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port)); | |
2217 | sib->sib_sid_mask = cpu_to_be64(~0ULL); | |
2218 | break; | |
2219 | } | |
e51060f0 SH |
2220 | id_priv->bind_list = bind_list; |
2221 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
2222 | } | |
2223 | ||
2224 | static int cma_alloc_port(struct idr *ps, struct rdma_id_private *id_priv, | |
2225 | unsigned short snum) | |
2226 | { | |
2227 | struct rdma_bind_list *bind_list; | |
3b069c5d | 2228 | int ret; |
e51060f0 | 2229 | |
cb164b8c | 2230 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
2231 | if (!bind_list) |
2232 | return -ENOMEM; | |
2233 | ||
3b069c5d TH |
2234 | ret = idr_alloc(ps, bind_list, snum, snum + 1, GFP_KERNEL); |
2235 | if (ret < 0) | |
2236 | goto err; | |
aedec080 SH |
2237 | |
2238 | bind_list->ps = ps; | |
3b069c5d | 2239 | bind_list->port = (unsigned short)ret; |
aedec080 SH |
2240 | cma_bind_port(bind_list, id_priv); |
2241 | return 0; | |
3b069c5d | 2242 | err: |
aedec080 | 2243 | kfree(bind_list); |
3b069c5d | 2244 | return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; |
aedec080 | 2245 | } |
e51060f0 | 2246 | |
aedec080 SH |
2247 | static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv) |
2248 | { | |
5d7220e8 TH |
2249 | static unsigned int last_used_port; |
2250 | int low, high, remaining; | |
2251 | unsigned int rover; | |
e51060f0 | 2252 | |
227b60f5 | 2253 | inet_get_local_port_range(&low, &high); |
5d7220e8 TH |
2254 | remaining = (high - low) + 1; |
2255 | rover = net_random() % remaining + low; | |
2256 | retry: | |
2257 | if (last_used_port != rover && | |
2258 | !idr_find(ps, (unsigned short) rover)) { | |
2259 | int ret = cma_alloc_port(ps, id_priv, rover); | |
2260 | /* | |
2261 | * Remember previously used port number in order to avoid | |
2262 | * re-using same port immediately after it is closed. | |
2263 | */ | |
2264 | if (!ret) | |
2265 | last_used_port = rover; | |
2266 | if (ret != -EADDRNOTAVAIL) | |
2267 | return ret; | |
e51060f0 | 2268 | } |
5d7220e8 TH |
2269 | if (--remaining) { |
2270 | rover++; | |
2271 | if ((rover < low) || (rover > high)) | |
2272 | rover = low; | |
2273 | goto retry; | |
2274 | } | |
2275 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
2276 | } |
2277 | ||
a9bb7912 HS |
2278 | /* |
2279 | * Check that the requested port is available. This is called when trying to | |
2280 | * bind to a specific port, or when trying to listen on a bound port. In | |
2281 | * the latter case, the provided id_priv may already be on the bind_list, but | |
2282 | * we still need to check that it's okay to start listening. | |
2283 | */ | |
2284 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
2285 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
2286 | { |
2287 | struct rdma_id_private *cur_id; | |
43b752da | 2288 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 2289 | |
f4753834 | 2290 | addr = cma_src_addr(id_priv); |
b67bfe0d | 2291 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { |
a9bb7912 HS |
2292 | if (id_priv == cur_id) |
2293 | continue; | |
3cd96564 | 2294 | |
5b0ec991 SH |
2295 | if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && |
2296 | cur_id->reuseaddr) | |
2297 | continue; | |
e51060f0 | 2298 | |
f4753834 | 2299 | cur_addr = cma_src_addr(cur_id); |
5b0ec991 SH |
2300 | if (id_priv->afonly && cur_id->afonly && |
2301 | (addr->sa_family != cur_addr->sa_family)) | |
2302 | continue; | |
2303 | ||
2304 | if (cma_any_addr(addr) || cma_any_addr(cur_addr)) | |
2305 | return -EADDRNOTAVAIL; | |
2306 | ||
2307 | if (!cma_addr_cmp(addr, cur_addr)) | |
2308 | return -EADDRINUSE; | |
a9bb7912 | 2309 | } |
e51060f0 SH |
2310 | return 0; |
2311 | } | |
2312 | ||
a9bb7912 HS |
2313 | static int cma_use_port(struct idr *ps, struct rdma_id_private *id_priv) |
2314 | { | |
2315 | struct rdma_bind_list *bind_list; | |
2316 | unsigned short snum; | |
2317 | int ret; | |
2318 | ||
f4753834 | 2319 | snum = ntohs(cma_port(cma_src_addr(id_priv))); |
a9bb7912 HS |
2320 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
2321 | return -EACCES; | |
2322 | ||
2323 | bind_list = idr_find(ps, snum); | |
2324 | if (!bind_list) { | |
2325 | ret = cma_alloc_port(ps, id_priv, snum); | |
2326 | } else { | |
2327 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
2328 | if (!ret) | |
2329 | cma_bind_port(bind_list, id_priv); | |
2330 | } | |
2331 | return ret; | |
2332 | } | |
2333 | ||
2334 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
2335 | { | |
2336 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
2337 | int ret = 0; | |
2338 | ||
2339 | mutex_lock(&lock); | |
2340 | if (bind_list->owners.first->next) | |
2341 | ret = cma_check_port(bind_list, id_priv, 0); | |
2342 | mutex_unlock(&lock); | |
2343 | return ret; | |
2344 | } | |
2345 | ||
58afdcb7 | 2346 | static struct idr *cma_select_inet_ps(struct rdma_id_private *id_priv) |
e51060f0 | 2347 | { |
e51060f0 SH |
2348 | switch (id_priv->id.ps) { |
2349 | case RDMA_PS_SDP: | |
58afdcb7 | 2350 | return &sdp_ps; |
e51060f0 | 2351 | case RDMA_PS_TCP: |
58afdcb7 | 2352 | return &tcp_ps; |
628e5f6d | 2353 | case RDMA_PS_UDP: |
58afdcb7 | 2354 | return &udp_ps; |
c8f6a362 | 2355 | case RDMA_PS_IPOIB: |
58afdcb7 | 2356 | return &ipoib_ps; |
2d2e9415 | 2357 | case RDMA_PS_IB: |
58afdcb7 | 2358 | return &ib_ps; |
e51060f0 | 2359 | default: |
58afdcb7 SH |
2360 | return NULL; |
2361 | } | |
2362 | } | |
2363 | ||
2364 | static struct idr *cma_select_ib_ps(struct rdma_id_private *id_priv) | |
2365 | { | |
2366 | struct idr *ps = NULL; | |
2367 | struct sockaddr_ib *sib; | |
2368 | u64 sid_ps, mask, sid; | |
2369 | ||
f4753834 | 2370 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); |
58afdcb7 SH |
2371 | mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK; |
2372 | sid = be64_to_cpu(sib->sib_sid) & mask; | |
2373 | ||
2374 | if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) { | |
2375 | sid_ps = RDMA_IB_IP_PS_IB; | |
2376 | ps = &ib_ps; | |
2377 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) && | |
2378 | (sid == (RDMA_IB_IP_PS_TCP & mask))) { | |
2379 | sid_ps = RDMA_IB_IP_PS_TCP; | |
2380 | ps = &tcp_ps; | |
2381 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) && | |
2382 | (sid == (RDMA_IB_IP_PS_UDP & mask))) { | |
2383 | sid_ps = RDMA_IB_IP_PS_UDP; | |
2384 | ps = &udp_ps; | |
e51060f0 SH |
2385 | } |
2386 | ||
58afdcb7 SH |
2387 | if (ps) { |
2388 | sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib))); | |
2389 | sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK | | |
2390 | be64_to_cpu(sib->sib_sid_mask)); | |
2391 | } | |
2392 | return ps; | |
2393 | } | |
2394 | ||
2395 | static int cma_get_port(struct rdma_id_private *id_priv) | |
2396 | { | |
2397 | struct idr *ps; | |
2398 | int ret; | |
2399 | ||
f4753834 | 2400 | if (cma_family(id_priv) != AF_IB) |
58afdcb7 SH |
2401 | ps = cma_select_inet_ps(id_priv); |
2402 | else | |
2403 | ps = cma_select_ib_ps(id_priv); | |
2404 | if (!ps) | |
2405 | return -EPROTONOSUPPORT; | |
2406 | ||
e51060f0 | 2407 | mutex_lock(&lock); |
f4753834 | 2408 | if (cma_any_port(cma_src_addr(id_priv))) |
aedec080 | 2409 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2410 | else |
2411 | ret = cma_use_port(ps, id_priv); | |
2412 | mutex_unlock(&lock); | |
2413 | ||
2414 | return ret; | |
2415 | } | |
2416 | ||
d14714df SH |
2417 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
2418 | struct sockaddr *addr) | |
2419 | { | |
d90f9b35 | 2420 | #if IS_ENABLED(CONFIG_IPV6) |
d14714df SH |
2421 | struct sockaddr_in6 *sin6; |
2422 | ||
2423 | if (addr->sa_family != AF_INET6) | |
2424 | return 0; | |
2425 | ||
2426 | sin6 = (struct sockaddr_in6 *) addr; | |
2427 | if ((ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) && | |
2428 | !sin6->sin6_scope_id) | |
2429 | return -EINVAL; | |
2430 | ||
2431 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
2432 | #endif | |
2433 | return 0; | |
2434 | } | |
2435 | ||
a9bb7912 HS |
2436 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
2437 | { | |
2438 | struct rdma_id_private *id_priv; | |
2439 | int ret; | |
2440 | ||
2441 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2442 | if (id_priv->state == RDMA_CM_IDLE) { |
f4753834 SH |
2443 | id->route.addr.src_addr.ss_family = AF_INET; |
2444 | ret = rdma_bind_addr(id, cma_src_addr(id_priv)); | |
a9bb7912 HS |
2445 | if (ret) |
2446 | return ret; | |
2447 | } | |
2448 | ||
550e5ca7 | 2449 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
2450 | return -EINVAL; |
2451 | ||
2452 | if (id_priv->reuseaddr) { | |
2453 | ret = cma_bind_listen(id_priv); | |
2454 | if (ret) | |
2455 | goto err; | |
2456 | } | |
2457 | ||
2458 | id_priv->backlog = backlog; | |
2459 | if (id->device) { | |
2460 | switch (rdma_node_get_transport(id->device->node_type)) { | |
2461 | case RDMA_TRANSPORT_IB: | |
2462 | ret = cma_ib_listen(id_priv); | |
2463 | if (ret) | |
2464 | goto err; | |
2465 | break; | |
2466 | case RDMA_TRANSPORT_IWARP: | |
2467 | ret = cma_iw_listen(id_priv, backlog); | |
2468 | if (ret) | |
2469 | goto err; | |
2470 | break; | |
2471 | default: | |
2472 | ret = -ENOSYS; | |
2473 | goto err; | |
2474 | } | |
2475 | } else | |
2476 | cma_listen_on_all(id_priv); | |
2477 | ||
2478 | return 0; | |
2479 | err: | |
2480 | id_priv->backlog = 0; | |
550e5ca7 | 2481 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
2482 | return ret; |
2483 | } | |
2484 | EXPORT_SYMBOL(rdma_listen); | |
2485 | ||
e51060f0 SH |
2486 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
2487 | { | |
2488 | struct rdma_id_private *id_priv; | |
2489 | int ret; | |
2490 | ||
680f920a SH |
2491 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 && |
2492 | addr->sa_family != AF_IB) | |
e51060f0 SH |
2493 | return -EAFNOSUPPORT; |
2494 | ||
2495 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2496 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
2497 | return -EINVAL; |
2498 | ||
d14714df SH |
2499 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
2500 | if (ret) | |
2501 | goto err1; | |
2502 | ||
8523c048 | 2503 | if (!cma_any_addr(addr)) { |
680f920a | 2504 | ret = cma_translate_addr(addr, &id->route.addr.dev_addr); |
e51060f0 | 2505 | if (ret) |
255d0c14 KK |
2506 | goto err1; |
2507 | ||
255d0c14 | 2508 | ret = cma_acquire_dev(id_priv); |
255d0c14 KK |
2509 | if (ret) |
2510 | goto err1; | |
e51060f0 SH |
2511 | } |
2512 | ||
f4753834 | 2513 | memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr)); |
68602120 SH |
2514 | if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { |
2515 | if (addr->sa_family == AF_INET) | |
2516 | id_priv->afonly = 1; | |
5b0ec991 | 2517 | #if IS_ENABLED(CONFIG_IPV6) |
68602120 SH |
2518 | else if (addr->sa_family == AF_INET6) |
2519 | id_priv->afonly = init_net.ipv6.sysctl.bindv6only; | |
5b0ec991 | 2520 | #endif |
68602120 | 2521 | } |
e51060f0 SH |
2522 | ret = cma_get_port(id_priv); |
2523 | if (ret) | |
255d0c14 | 2524 | goto err2; |
e51060f0 SH |
2525 | |
2526 | return 0; | |
255d0c14 | 2527 | err2: |
a396d43a SH |
2528 | if (id_priv->cma_dev) |
2529 | cma_release_dev(id_priv); | |
255d0c14 | 2530 | err1: |
550e5ca7 | 2531 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
2532 | return ret; |
2533 | } | |
2534 | EXPORT_SYMBOL(rdma_bind_addr); | |
2535 | ||
f4753834 | 2536 | static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv) |
e51060f0 | 2537 | { |
e51060f0 SH |
2538 | struct cma_hdr *cma_hdr; |
2539 | struct sdp_hh *sdp_hdr; | |
2540 | ||
f4753834 | 2541 | if (cma_family(id_priv) == AF_INET) { |
1f5175ad AS |
2542 | struct sockaddr_in *src4, *dst4; |
2543 | ||
f4753834 SH |
2544 | src4 = (struct sockaddr_in *) cma_src_addr(id_priv); |
2545 | dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv); | |
1f5175ad | 2546 | |
f4753834 | 2547 | switch (id_priv->id.ps) { |
1f5175ad AS |
2548 | case RDMA_PS_SDP: |
2549 | sdp_hdr = hdr; | |
2550 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2551 | return -EINVAL; | |
2552 | sdp_set_ip_ver(sdp_hdr, 4); | |
2553 | sdp_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2554 | sdp_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2555 | sdp_hdr->port = src4->sin_port; | |
2556 | break; | |
2557 | default: | |
2558 | cma_hdr = hdr; | |
2559 | cma_hdr->cma_version = CMA_VERSION; | |
2560 | cma_set_ip_ver(cma_hdr, 4); | |
2561 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
2562 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
2563 | cma_hdr->port = src4->sin_port; | |
2564 | break; | |
2565 | } | |
2566 | } else { | |
2567 | struct sockaddr_in6 *src6, *dst6; | |
2568 | ||
f4753834 SH |
2569 | src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
2570 | dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv); | |
1f5175ad | 2571 | |
f4753834 | 2572 | switch (id_priv->id.ps) { |
1f5175ad AS |
2573 | case RDMA_PS_SDP: |
2574 | sdp_hdr = hdr; | |
2575 | if (sdp_get_majv(sdp_hdr->sdp_version) != SDP_MAJ_VERSION) | |
2576 | return -EINVAL; | |
2577 | sdp_set_ip_ver(sdp_hdr, 6); | |
2578 | sdp_hdr->src_addr.ip6 = src6->sin6_addr; | |
2579 | sdp_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2580 | sdp_hdr->port = src6->sin6_port; | |
2581 | break; | |
2582 | default: | |
2583 | cma_hdr = hdr; | |
2584 | cma_hdr->cma_version = CMA_VERSION; | |
2585 | cma_set_ip_ver(cma_hdr, 6); | |
2586 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
2587 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
2588 | cma_hdr->port = src6->sin6_port; | |
2589 | break; | |
2590 | } | |
e51060f0 SH |
2591 | } |
2592 | return 0; | |
2593 | } | |
2594 | ||
628e5f6d SH |
2595 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
2596 | struct ib_cm_event *ib_event) | |
2597 | { | |
2598 | struct rdma_id_private *id_priv = cm_id->context; | |
2599 | struct rdma_cm_event event; | |
2600 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
2601 | int ret = 0; | |
2602 | ||
550e5ca7 | 2603 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
8aa08602 | 2604 | return 0; |
628e5f6d | 2605 | |
8aa08602 | 2606 | memset(&event, 0, sizeof event); |
628e5f6d SH |
2607 | switch (ib_event->event) { |
2608 | case IB_CM_SIDR_REQ_ERROR: | |
2609 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2610 | event.status = -ETIMEDOUT; | |
2611 | break; | |
2612 | case IB_CM_SIDR_REP_RECEIVED: | |
2613 | event.param.ud.private_data = ib_event->private_data; | |
2614 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
2615 | if (rep->status != IB_SIDR_SUCCESS) { | |
2616 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2617 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
2618 | break; | |
2619 | } | |
d2ca39f2 YE |
2620 | ret = cma_set_qkey(id_priv); |
2621 | if (ret) { | |
2622 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
2623 | event.status = -EINVAL; | |
2624 | break; | |
2625 | } | |
c8f6a362 | 2626 | if (id_priv->qkey != rep->qkey) { |
628e5f6d SH |
2627 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
2628 | event.status = -EINVAL; | |
2629 | break; | |
2630 | } | |
2631 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
2632 | id_priv->id.route.path_rec, | |
2633 | &event.param.ud.ah_attr); | |
2634 | event.param.ud.qp_num = rep->qpn; | |
2635 | event.param.ud.qkey = rep->qkey; | |
2636 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
2637 | event.status = 0; | |
2638 | break; | |
2639 | default: | |
468f2239 | 2640 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
2641 | ib_event->event); |
2642 | goto out; | |
2643 | } | |
2644 | ||
2645 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
2646 | if (ret) { | |
2647 | /* Destroy the CM ID by returning a non-zero value. */ | |
2648 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 2649 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2650 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2651 | rdma_destroy_id(&id_priv->id); |
2652 | return ret; | |
2653 | } | |
2654 | out: | |
de910bd9 | 2655 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
2656 | return ret; |
2657 | } | |
2658 | ||
2659 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
2660 | struct rdma_conn_param *conn_param) | |
2661 | { | |
2662 | struct ib_cm_sidr_req_param req; | |
0c9361fc | 2663 | struct ib_cm_id *id; |
628e5f6d SH |
2664 | int ret; |
2665 | ||
2666 | req.private_data_len = sizeof(struct cma_hdr) + | |
2667 | conn_param->private_data_len; | |
04ded167 SH |
2668 | if (req.private_data_len < conn_param->private_data_len) |
2669 | return -EINVAL; | |
2670 | ||
628e5f6d SH |
2671 | req.private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
2672 | if (!req.private_data) | |
2673 | return -ENOMEM; | |
2674 | ||
2675 | if (conn_param->private_data && conn_param->private_data_len) | |
2676 | memcpy((void *) req.private_data + sizeof(struct cma_hdr), | |
2677 | conn_param->private_data, conn_param->private_data_len); | |
2678 | ||
f4753834 | 2679 | ret = cma_format_hdr((void *) req.private_data, id_priv); |
628e5f6d SH |
2680 | if (ret) |
2681 | goto out; | |
2682 | ||
0c9361fc JM |
2683 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
2684 | id_priv); | |
2685 | if (IS_ERR(id)) { | |
2686 | ret = PTR_ERR(id); | |
628e5f6d SH |
2687 | goto out; |
2688 | } | |
0c9361fc | 2689 | id_priv->cm_id.ib = id; |
628e5f6d | 2690 | |
f4753834 SH |
2691 | req.path = id_priv->id.route.path_rec; |
2692 | req.service_id = cma_get_service_id(id_priv->id.ps, cma_dst_addr(id_priv)); | |
628e5f6d SH |
2693 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
2694 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2695 | ||
2696 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
2697 | if (ret) { | |
2698 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
2699 | id_priv->cm_id.ib = NULL; | |
2700 | } | |
2701 | out: | |
2702 | kfree(req.private_data); | |
2703 | return ret; | |
2704 | } | |
2705 | ||
e51060f0 SH |
2706 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
2707 | struct rdma_conn_param *conn_param) | |
2708 | { | |
2709 | struct ib_cm_req_param req; | |
2710 | struct rdma_route *route; | |
2711 | void *private_data; | |
0c9361fc | 2712 | struct ib_cm_id *id; |
e51060f0 SH |
2713 | int offset, ret; |
2714 | ||
2715 | memset(&req, 0, sizeof req); | |
2716 | offset = cma_user_data_offset(id_priv->id.ps); | |
2717 | req.private_data_len = offset + conn_param->private_data_len; | |
04ded167 SH |
2718 | if (req.private_data_len < conn_param->private_data_len) |
2719 | return -EINVAL; | |
2720 | ||
e51060f0 SH |
2721 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
2722 | if (!private_data) | |
2723 | return -ENOMEM; | |
2724 | ||
2725 | if (conn_param->private_data && conn_param->private_data_len) | |
2726 | memcpy(private_data + offset, conn_param->private_data, | |
2727 | conn_param->private_data_len); | |
2728 | ||
0c9361fc JM |
2729 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
2730 | if (IS_ERR(id)) { | |
2731 | ret = PTR_ERR(id); | |
e51060f0 SH |
2732 | goto out; |
2733 | } | |
0c9361fc | 2734 | id_priv->cm_id.ib = id; |
e51060f0 SH |
2735 | |
2736 | route = &id_priv->id.route; | |
f4753834 | 2737 | ret = cma_format_hdr(private_data, id_priv); |
e51060f0 SH |
2738 | if (ret) |
2739 | goto out; | |
2740 | req.private_data = private_data; | |
2741 | ||
2742 | req.primary_path = &route->path_rec[0]; | |
2743 | if (route->num_paths == 2) | |
2744 | req.alternate_path = &route->path_rec[1]; | |
2745 | ||
f4753834 | 2746 | req.service_id = cma_get_service_id(id_priv->id.ps, cma_dst_addr(id_priv)); |
e51060f0 | 2747 | req.qp_num = id_priv->qp_num; |
18c441a6 | 2748 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
2749 | req.starting_psn = id_priv->seq_num; |
2750 | req.responder_resources = conn_param->responder_resources; | |
2751 | req.initiator_depth = conn_param->initiator_depth; | |
2752 | req.flow_control = conn_param->flow_control; | |
4ede178a SH |
2753 | req.retry_count = min_t(u8, 7, conn_param->retry_count); |
2754 | req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); | |
e51060f0 SH |
2755 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; |
2756 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
2757 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
2758 | req.srq = id_priv->srq ? 1 : 0; | |
2759 | ||
2760 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
2761 | out: | |
0c9361fc JM |
2762 | if (ret && !IS_ERR(id)) { |
2763 | ib_destroy_cm_id(id); | |
675a027c KK |
2764 | id_priv->cm_id.ib = NULL; |
2765 | } | |
2766 | ||
e51060f0 SH |
2767 | kfree(private_data); |
2768 | return ret; | |
2769 | } | |
2770 | ||
07ebafba TT |
2771 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
2772 | struct rdma_conn_param *conn_param) | |
2773 | { | |
2774 | struct iw_cm_id *cm_id; | |
2775 | struct sockaddr_in* sin; | |
2776 | int ret; | |
2777 | struct iw_cm_conn_param iw_param; | |
2778 | ||
2779 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
2780 | if (IS_ERR(cm_id)) |
2781 | return PTR_ERR(cm_id); | |
07ebafba TT |
2782 | |
2783 | id_priv->cm_id.iw = cm_id; | |
2784 | ||
f4753834 | 2785 | sin = (struct sockaddr_in *) cma_src_addr(id_priv); |
07ebafba TT |
2786 | cm_id->local_addr = *sin; |
2787 | ||
f4753834 | 2788 | sin = (struct sockaddr_in *) cma_dst_addr(id_priv); |
07ebafba TT |
2789 | cm_id->remote_addr = *sin; |
2790 | ||
5851bb89 | 2791 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
2792 | if (ret) |
2793 | goto out; | |
07ebafba | 2794 | |
f45ee80e HS |
2795 | if (conn_param) { |
2796 | iw_param.ord = conn_param->initiator_depth; | |
2797 | iw_param.ird = conn_param->responder_resources; | |
2798 | iw_param.private_data = conn_param->private_data; | |
2799 | iw_param.private_data_len = conn_param->private_data_len; | |
2800 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
2801 | } else { | |
2802 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 2803 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 2804 | } |
07ebafba TT |
2805 | ret = iw_cm_connect(cm_id, &iw_param); |
2806 | out: | |
0c9361fc | 2807 | if (ret) { |
675a027c KK |
2808 | iw_destroy_cm_id(cm_id); |
2809 | id_priv->cm_id.iw = NULL; | |
2810 | } | |
07ebafba TT |
2811 | return ret; |
2812 | } | |
2813 | ||
e51060f0 SH |
2814 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2815 | { | |
2816 | struct rdma_id_private *id_priv; | |
2817 | int ret; | |
2818 | ||
2819 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2820 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
2821 | return -EINVAL; |
2822 | ||
2823 | if (!id->qp) { | |
2824 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2825 | id_priv->srq = conn_param->srq; |
2826 | } | |
2827 | ||
07ebafba TT |
2828 | switch (rdma_node_get_transport(id->device->node_type)) { |
2829 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 2830 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
2831 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
2832 | else | |
2833 | ret = cma_connect_ib(id_priv, conn_param); | |
e51060f0 | 2834 | break; |
07ebafba TT |
2835 | case RDMA_TRANSPORT_IWARP: |
2836 | ret = cma_connect_iw(id_priv, conn_param); | |
2837 | break; | |
e51060f0 SH |
2838 | default: |
2839 | ret = -ENOSYS; | |
2840 | break; | |
2841 | } | |
2842 | if (ret) | |
2843 | goto err; | |
2844 | ||
2845 | return 0; | |
2846 | err: | |
550e5ca7 | 2847 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
2848 | return ret; |
2849 | } | |
2850 | EXPORT_SYMBOL(rdma_connect); | |
2851 | ||
2852 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
2853 | struct rdma_conn_param *conn_param) | |
2854 | { | |
2855 | struct ib_cm_rep_param rep; | |
5851bb89 | 2856 | int ret; |
0fe313b0 | 2857 | |
5851bb89 SH |
2858 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
2859 | if (ret) | |
2860 | goto out; | |
0fe313b0 | 2861 | |
5851bb89 SH |
2862 | ret = cma_modify_qp_rts(id_priv, conn_param); |
2863 | if (ret) | |
2864 | goto out; | |
e51060f0 SH |
2865 | |
2866 | memset(&rep, 0, sizeof rep); | |
2867 | rep.qp_num = id_priv->qp_num; | |
2868 | rep.starting_psn = id_priv->seq_num; | |
2869 | rep.private_data = conn_param->private_data; | |
2870 | rep.private_data_len = conn_param->private_data_len; | |
2871 | rep.responder_resources = conn_param->responder_resources; | |
2872 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
2873 | rep.failover_accepted = 0; |
2874 | rep.flow_control = conn_param->flow_control; | |
4ede178a | 2875 | rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); |
e51060f0 SH |
2876 | rep.srq = id_priv->srq ? 1 : 0; |
2877 | ||
0fe313b0 SH |
2878 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
2879 | out: | |
2880 | return ret; | |
e51060f0 SH |
2881 | } |
2882 | ||
07ebafba TT |
2883 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
2884 | struct rdma_conn_param *conn_param) | |
2885 | { | |
2886 | struct iw_cm_conn_param iw_param; | |
2887 | int ret; | |
2888 | ||
5851bb89 | 2889 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
2890 | if (ret) |
2891 | return ret; | |
2892 | ||
2893 | iw_param.ord = conn_param->initiator_depth; | |
2894 | iw_param.ird = conn_param->responder_resources; | |
2895 | iw_param.private_data = conn_param->private_data; | |
2896 | iw_param.private_data_len = conn_param->private_data_len; | |
2897 | if (id_priv->id.qp) { | |
2898 | iw_param.qpn = id_priv->qp_num; | |
2899 | } else | |
2900 | iw_param.qpn = conn_param->qp_num; | |
2901 | ||
2902 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
2903 | } | |
2904 | ||
628e5f6d SH |
2905 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
2906 | enum ib_cm_sidr_status status, | |
2907 | const void *private_data, int private_data_len) | |
2908 | { | |
2909 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 2910 | int ret; |
628e5f6d SH |
2911 | |
2912 | memset(&rep, 0, sizeof rep); | |
2913 | rep.status = status; | |
2914 | if (status == IB_SIDR_SUCCESS) { | |
d2ca39f2 YE |
2915 | ret = cma_set_qkey(id_priv); |
2916 | if (ret) | |
2917 | return ret; | |
628e5f6d | 2918 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 2919 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
2920 | } |
2921 | rep.private_data = private_data; | |
2922 | rep.private_data_len = private_data_len; | |
2923 | ||
2924 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
2925 | } | |
2926 | ||
e51060f0 SH |
2927 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
2928 | { | |
2929 | struct rdma_id_private *id_priv; | |
2930 | int ret; | |
2931 | ||
2932 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d NM |
2933 | |
2934 | id_priv->owner = task_pid_nr(current); | |
2935 | ||
550e5ca7 | 2936 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
2937 | return -EINVAL; |
2938 | ||
2939 | if (!id->qp && conn_param) { | |
2940 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
2941 | id_priv->srq = conn_param->srq; |
2942 | } | |
2943 | ||
07ebafba TT |
2944 | switch (rdma_node_get_transport(id->device->node_type)) { |
2945 | case RDMA_TRANSPORT_IB: | |
f45ee80e HS |
2946 | if (id->qp_type == IB_QPT_UD) { |
2947 | if (conn_param) | |
2948 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
2949 | conn_param->private_data, | |
2950 | conn_param->private_data_len); | |
2951 | else | |
2952 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
2953 | NULL, 0); | |
2954 | } else { | |
2955 | if (conn_param) | |
2956 | ret = cma_accept_ib(id_priv, conn_param); | |
2957 | else | |
2958 | ret = cma_rep_recv(id_priv); | |
2959 | } | |
e51060f0 | 2960 | break; |
07ebafba TT |
2961 | case RDMA_TRANSPORT_IWARP: |
2962 | ret = cma_accept_iw(id_priv, conn_param); | |
2963 | break; | |
e51060f0 SH |
2964 | default: |
2965 | ret = -ENOSYS; | |
2966 | break; | |
2967 | } | |
2968 | ||
2969 | if (ret) | |
2970 | goto reject; | |
2971 | ||
2972 | return 0; | |
2973 | reject: | |
c5483388 | 2974 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
2975 | rdma_reject(id, NULL, 0); |
2976 | return ret; | |
2977 | } | |
2978 | EXPORT_SYMBOL(rdma_accept); | |
2979 | ||
0fe313b0 SH |
2980 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
2981 | { | |
2982 | struct rdma_id_private *id_priv; | |
2983 | int ret; | |
2984 | ||
2985 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 2986 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
2987 | return -EINVAL; |
2988 | ||
2989 | switch (id->device->node_type) { | |
2990 | case RDMA_NODE_IB_CA: | |
2991 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
2992 | break; | |
2993 | default: | |
2994 | ret = 0; | |
2995 | break; | |
2996 | } | |
2997 | return ret; | |
2998 | } | |
2999 | EXPORT_SYMBOL(rdma_notify); | |
3000 | ||
e51060f0 SH |
3001 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
3002 | u8 private_data_len) | |
3003 | { | |
3004 | struct rdma_id_private *id_priv; | |
3005 | int ret; | |
3006 | ||
3007 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3008 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3009 | return -EINVAL; |
3010 | ||
07ebafba TT |
3011 | switch (rdma_node_get_transport(id->device->node_type)) { |
3012 | case RDMA_TRANSPORT_IB: | |
b26f9b99 | 3013 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
3014 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, |
3015 | private_data, private_data_len); | |
3016 | else | |
3017 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
3018 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
3019 | 0, private_data, private_data_len); | |
e51060f0 | 3020 | break; |
07ebafba TT |
3021 | case RDMA_TRANSPORT_IWARP: |
3022 | ret = iw_cm_reject(id_priv->cm_id.iw, | |
3023 | private_data, private_data_len); | |
3024 | break; | |
e51060f0 SH |
3025 | default: |
3026 | ret = -ENOSYS; | |
3027 | break; | |
3028 | } | |
3029 | return ret; | |
3030 | } | |
3031 | EXPORT_SYMBOL(rdma_reject); | |
3032 | ||
3033 | int rdma_disconnect(struct rdma_cm_id *id) | |
3034 | { | |
3035 | struct rdma_id_private *id_priv; | |
3036 | int ret; | |
3037 | ||
3038 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3039 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3040 | return -EINVAL; |
3041 | ||
07ebafba TT |
3042 | switch (rdma_node_get_transport(id->device->node_type)) { |
3043 | case RDMA_TRANSPORT_IB: | |
c5483388 | 3044 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
3045 | if (ret) |
3046 | goto out; | |
e51060f0 SH |
3047 | /* Initiate or respond to a disconnect. */ |
3048 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
3049 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
3050 | break; | |
07ebafba TT |
3051 | case RDMA_TRANSPORT_IWARP: |
3052 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); | |
3053 | break; | |
e51060f0 | 3054 | default: |
07ebafba | 3055 | ret = -EINVAL; |
e51060f0 SH |
3056 | break; |
3057 | } | |
3058 | out: | |
3059 | return ret; | |
3060 | } | |
3061 | EXPORT_SYMBOL(rdma_disconnect); | |
3062 | ||
c8f6a362 SH |
3063 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
3064 | { | |
3065 | struct rdma_id_private *id_priv; | |
3066 | struct cma_multicast *mc = multicast->context; | |
3067 | struct rdma_cm_event event; | |
3068 | int ret; | |
3069 | ||
3070 | id_priv = mc->id_priv; | |
550e5ca7 NM |
3071 | if (cma_disable_callback(id_priv, RDMA_CM_ADDR_BOUND) && |
3072 | cma_disable_callback(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
8aa08602 | 3073 | return 0; |
c8f6a362 | 3074 | |
c5483388 | 3075 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
3076 | if (!status && id_priv->id.qp) |
3077 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
46ea5061 | 3078 | be16_to_cpu(multicast->rec.mlid)); |
c5483388 | 3079 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
3080 | |
3081 | memset(&event, 0, sizeof event); | |
3082 | event.status = status; | |
3083 | event.param.ud.private_data = mc->context; | |
3084 | if (!status) { | |
3085 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
3086 | ib_init_ah_from_mcmember(id_priv->id.device, | |
3087 | id_priv->id.port_num, &multicast->rec, | |
3088 | &event.param.ud.ah_attr); | |
3089 | event.param.ud.qp_num = 0xFFFFFF; | |
3090 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
3091 | } else | |
3092 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
3093 | ||
3094 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3095 | if (ret) { | |
550e5ca7 | 3096 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3097 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3098 | rdma_destroy_id(&id_priv->id); |
3099 | return 0; | |
3100 | } | |
8aa08602 | 3101 | |
de910bd9 | 3102 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3103 | return 0; |
3104 | } | |
3105 | ||
3106 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
3107 | struct sockaddr *addr, union ib_gid *mgid) | |
3108 | { | |
3109 | unsigned char mc_map[MAX_ADDR_LEN]; | |
3110 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3111 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
3112 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
3113 | ||
3114 | if (cma_any_addr(addr)) { | |
3115 | memset(mgid, 0, sizeof *mgid); | |
3116 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 3117 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
3118 | 0xFF10A01B)) { |
3119 | /* IPv6 address is an SA assigned MGID. */ | |
3120 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
e2e62697 JG |
3121 | } else if ((addr->sa_family == AF_INET6)) { |
3122 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
3123 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3124 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
3125 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 3126 | } else { |
a9e527e3 | 3127 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
3128 | if (id_priv->id.ps == RDMA_PS_UDP) |
3129 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
3130 | *mgid = *(union ib_gid *) (mc_map + 4); |
3131 | } | |
3132 | } | |
3133 | ||
3134 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
3135 | struct cma_multicast *mc) | |
3136 | { | |
3137 | struct ib_sa_mcmember_rec rec; | |
3138 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3139 | ib_sa_comp_mask comp_mask; | |
3140 | int ret; | |
3141 | ||
3142 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
3143 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
3144 | &rec.mgid, &rec); | |
3145 | if (ret) | |
3146 | return ret; | |
3147 | ||
3f446754 | 3148 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
c8f6a362 SH |
3149 | if (id_priv->id.ps == RDMA_PS_UDP) |
3150 | rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
6f8372b6 | 3151 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 SH |
3152 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
3153 | rec.join_state = 1; | |
3154 | ||
3155 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
3156 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
3157 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
3158 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
3159 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
3160 | ||
84adeee9 YE |
3161 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
3162 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2a22fb8c DB |
3163 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
3164 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
3165 | IB_SA_MCMEMBER_REC_MTU | | |
3166 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
84adeee9 | 3167 | |
c8f6a362 SH |
3168 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
3169 | id_priv->id.port_num, &rec, | |
3170 | comp_mask, GFP_KERNEL, | |
3171 | cma_ib_mc_handler, mc); | |
4e289045 | 3172 | return PTR_RET(mc->multicast.ib); |
c8f6a362 SH |
3173 | } |
3174 | ||
3c86aa70 EC |
3175 | static void iboe_mcast_work_handler(struct work_struct *work) |
3176 | { | |
3177 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
3178 | struct cma_multicast *mc = mw->mc; | |
3179 | struct ib_sa_multicast *m = mc->multicast.ib; | |
3180 | ||
3181 | mc->multicast.ib->context = mc; | |
3182 | cma_ib_mc_handler(0, m); | |
3183 | kref_put(&mc->mcref, release_mc); | |
3184 | kfree(mw); | |
3185 | } | |
3186 | ||
3187 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) | |
3188 | { | |
3189 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
3190 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
3191 | ||
3192 | if (cma_any_addr(addr)) { | |
3193 | memset(mgid, 0, sizeof *mgid); | |
3194 | } else if (addr->sa_family == AF_INET6) { | |
3195 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
3196 | } else { | |
3197 | mgid->raw[0] = 0xff; | |
3198 | mgid->raw[1] = 0x0e; | |
3199 | mgid->raw[2] = 0; | |
3200 | mgid->raw[3] = 0; | |
3201 | mgid->raw[4] = 0; | |
3202 | mgid->raw[5] = 0; | |
3203 | mgid->raw[6] = 0; | |
3204 | mgid->raw[7] = 0; | |
3205 | mgid->raw[8] = 0; | |
3206 | mgid->raw[9] = 0; | |
3207 | mgid->raw[10] = 0xff; | |
3208 | mgid->raw[11] = 0xff; | |
3209 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
3210 | } | |
3211 | } | |
3212 | ||
3213 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
3214 | struct cma_multicast *mc) | |
3215 | { | |
3216 | struct iboe_mcast_work *work; | |
3217 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3218 | int err; | |
3219 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; | |
3220 | struct net_device *ndev = NULL; | |
3221 | ||
3222 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
3223 | return -EINVAL; | |
3224 | ||
3225 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3226 | if (!work) | |
3227 | return -ENOMEM; | |
3228 | ||
3229 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
3230 | if (!mc->multicast.ib) { | |
3231 | err = -ENOMEM; | |
3232 | goto out1; | |
3233 | } | |
3234 | ||
3235 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); | |
3236 | ||
3237 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
3238 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3239 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
3240 | ||
3241 | if (dev_addr->bound_dev_if) | |
3242 | ndev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3243 | if (!ndev) { | |
3244 | err = -ENODEV; | |
3245 | goto out2; | |
3246 | } | |
3247 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
3248 | mc->multicast.ib->rec.hop_limit = 1; | |
3249 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
3250 | dev_put(ndev); | |
3251 | if (!mc->multicast.ib->rec.mtu) { | |
3252 | err = -EINVAL; | |
3253 | goto out2; | |
3254 | } | |
3255 | iboe_addr_get_sgid(dev_addr, &mc->multicast.ib->rec.port_gid); | |
3256 | work->id = id_priv; | |
3257 | work->mc = mc; | |
3258 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
3259 | kref_get(&mc->mcref); | |
3260 | queue_work(cma_wq, &work->work); | |
3261 | ||
3262 | return 0; | |
3263 | ||
3264 | out2: | |
3265 | kfree(mc->multicast.ib); | |
3266 | out1: | |
3267 | kfree(work); | |
3268 | return err; | |
3269 | } | |
3270 | ||
c8f6a362 SH |
3271 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
3272 | void *context) | |
3273 | { | |
3274 | struct rdma_id_private *id_priv; | |
3275 | struct cma_multicast *mc; | |
3276 | int ret; | |
3277 | ||
3278 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
3279 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
3280 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
3281 | return -EINVAL; |
3282 | ||
3283 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
3284 | if (!mc) | |
3285 | return -ENOMEM; | |
3286 | ||
ef560861 | 3287 | memcpy(&mc->addr, addr, rdma_addr_size(addr)); |
c8f6a362 SH |
3288 | mc->context = context; |
3289 | mc->id_priv = id_priv; | |
3290 | ||
3291 | spin_lock(&id_priv->lock); | |
3292 | list_add(&mc->list, &id_priv->mc_list); | |
3293 | spin_unlock(&id_priv->lock); | |
3294 | ||
3295 | switch (rdma_node_get_transport(id->device->node_type)) { | |
3296 | case RDMA_TRANSPORT_IB: | |
3c86aa70 EC |
3297 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { |
3298 | case IB_LINK_LAYER_INFINIBAND: | |
3299 | ret = cma_join_ib_multicast(id_priv, mc); | |
3300 | break; | |
3301 | case IB_LINK_LAYER_ETHERNET: | |
3302 | kref_init(&mc->mcref); | |
3303 | ret = cma_iboe_join_multicast(id_priv, mc); | |
3304 | break; | |
3305 | default: | |
3306 | ret = -EINVAL; | |
3307 | } | |
c8f6a362 SH |
3308 | break; |
3309 | default: | |
3310 | ret = -ENOSYS; | |
3311 | break; | |
3312 | } | |
3313 | ||
3314 | if (ret) { | |
3315 | spin_lock_irq(&id_priv->lock); | |
3316 | list_del(&mc->list); | |
3317 | spin_unlock_irq(&id_priv->lock); | |
3318 | kfree(mc); | |
3319 | } | |
3320 | return ret; | |
3321 | } | |
3322 | EXPORT_SYMBOL(rdma_join_multicast); | |
3323 | ||
3324 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
3325 | { | |
3326 | struct rdma_id_private *id_priv; | |
3327 | struct cma_multicast *mc; | |
3328 | ||
3329 | id_priv = container_of(id, struct rdma_id_private, id); | |
3330 | spin_lock_irq(&id_priv->lock); | |
3331 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
ef560861 | 3332 | if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) { |
c8f6a362 SH |
3333 | list_del(&mc->list); |
3334 | spin_unlock_irq(&id_priv->lock); | |
3335 | ||
3336 | if (id->qp) | |
3337 | ib_detach_mcast(id->qp, | |
3338 | &mc->multicast.ib->rec.mgid, | |
46ea5061 | 3339 | be16_to_cpu(mc->multicast.ib->rec.mlid)); |
3c86aa70 EC |
3340 | if (rdma_node_get_transport(id_priv->cma_dev->device->node_type) == RDMA_TRANSPORT_IB) { |
3341 | switch (rdma_port_get_link_layer(id->device, id->port_num)) { | |
3342 | case IB_LINK_LAYER_INFINIBAND: | |
3343 | ib_sa_free_multicast(mc->multicast.ib); | |
3344 | kfree(mc); | |
3345 | break; | |
3346 | case IB_LINK_LAYER_ETHERNET: | |
3347 | kref_put(&mc->mcref, release_mc); | |
3348 | break; | |
3349 | default: | |
3350 | break; | |
3351 | } | |
3352 | } | |
c8f6a362 SH |
3353 | return; |
3354 | } | |
3355 | } | |
3356 | spin_unlock_irq(&id_priv->lock); | |
3357 | } | |
3358 | EXPORT_SYMBOL(rdma_leave_multicast); | |
3359 | ||
dd5bdff8 OG |
3360 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
3361 | { | |
3362 | struct rdma_dev_addr *dev_addr; | |
3363 | struct cma_ndev_work *work; | |
3364 | ||
3365 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
3366 | ||
6266ed6e | 3367 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
dd5bdff8 OG |
3368 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
3369 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
3370 | ndev->name, &id_priv->id); | |
3371 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3372 | if (!work) | |
3373 | return -ENOMEM; | |
3374 | ||
3375 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
3376 | work->id = id_priv; | |
3377 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
3378 | atomic_inc(&id_priv->refcount); | |
3379 | queue_work(cma_wq, &work->work); | |
3380 | } | |
3381 | ||
3382 | return 0; | |
3383 | } | |
3384 | ||
3385 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
351638e7 | 3386 | void *ptr) |
dd5bdff8 | 3387 | { |
351638e7 | 3388 | struct net_device *ndev = netdev_notifier_info_to_dev(ptr); |
dd5bdff8 OG |
3389 | struct cma_device *cma_dev; |
3390 | struct rdma_id_private *id_priv; | |
3391 | int ret = NOTIFY_DONE; | |
3392 | ||
3393 | if (dev_net(ndev) != &init_net) | |
3394 | return NOTIFY_DONE; | |
3395 | ||
3396 | if (event != NETDEV_BONDING_FAILOVER) | |
3397 | return NOTIFY_DONE; | |
3398 | ||
3399 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
3400 | return NOTIFY_DONE; | |
3401 | ||
3402 | mutex_lock(&lock); | |
3403 | list_for_each_entry(cma_dev, &dev_list, list) | |
3404 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3405 | ret = cma_netdev_change(ndev, id_priv); | |
3406 | if (ret) | |
3407 | goto out; | |
3408 | } | |
3409 | ||
3410 | out: | |
3411 | mutex_unlock(&lock); | |
3412 | return ret; | |
3413 | } | |
3414 | ||
3415 | static struct notifier_block cma_nb = { | |
3416 | .notifier_call = cma_netdev_callback | |
3417 | }; | |
3418 | ||
e51060f0 SH |
3419 | static void cma_add_one(struct ib_device *device) |
3420 | { | |
3421 | struct cma_device *cma_dev; | |
3422 | struct rdma_id_private *id_priv; | |
3423 | ||
3424 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
3425 | if (!cma_dev) | |
3426 | return; | |
3427 | ||
3428 | cma_dev->device = device; | |
e51060f0 SH |
3429 | |
3430 | init_completion(&cma_dev->comp); | |
3431 | atomic_set(&cma_dev->refcount, 1); | |
3432 | INIT_LIST_HEAD(&cma_dev->id_list); | |
3433 | ib_set_client_data(device, &cma_client, cma_dev); | |
3434 | ||
3435 | mutex_lock(&lock); | |
3436 | list_add_tail(&cma_dev->list, &dev_list); | |
3437 | list_for_each_entry(id_priv, &listen_any_list, list) | |
3438 | cma_listen_on_dev(id_priv, cma_dev); | |
3439 | mutex_unlock(&lock); | |
e51060f0 SH |
3440 | } |
3441 | ||
3442 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
3443 | { | |
a1b1b61f | 3444 | struct rdma_cm_event event; |
550e5ca7 | 3445 | enum rdma_cm_state state; |
de910bd9 | 3446 | int ret = 0; |
e51060f0 SH |
3447 | |
3448 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
3449 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
3450 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
3451 | return 0; |
3452 | ||
3453 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 3454 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
3455 | |
3456 | /* Check for destruction from another callback. */ | |
550e5ca7 | 3457 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 3458 | goto out; |
e51060f0 | 3459 | |
a1b1b61f SH |
3460 | memset(&event, 0, sizeof event); |
3461 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
3462 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
3463 | out: | |
3464 | mutex_unlock(&id_priv->handler_mutex); | |
3465 | return ret; | |
e51060f0 SH |
3466 | } |
3467 | ||
3468 | static void cma_process_remove(struct cma_device *cma_dev) | |
3469 | { | |
e51060f0 SH |
3470 | struct rdma_id_private *id_priv; |
3471 | int ret; | |
3472 | ||
e51060f0 SH |
3473 | mutex_lock(&lock); |
3474 | while (!list_empty(&cma_dev->id_list)) { | |
3475 | id_priv = list_entry(cma_dev->id_list.next, | |
3476 | struct rdma_id_private, list); | |
3477 | ||
d02d1f53 | 3478 | list_del(&id_priv->listen_list); |
94de178a | 3479 | list_del_init(&id_priv->list); |
e51060f0 SH |
3480 | atomic_inc(&id_priv->refcount); |
3481 | mutex_unlock(&lock); | |
3482 | ||
d02d1f53 | 3483 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
3484 | cma_deref_id(id_priv); |
3485 | if (ret) | |
3486 | rdma_destroy_id(&id_priv->id); | |
3487 | ||
3488 | mutex_lock(&lock); | |
3489 | } | |
3490 | mutex_unlock(&lock); | |
3491 | ||
3492 | cma_deref_dev(cma_dev); | |
3493 | wait_for_completion(&cma_dev->comp); | |
3494 | } | |
3495 | ||
3496 | static void cma_remove_one(struct ib_device *device) | |
3497 | { | |
3498 | struct cma_device *cma_dev; | |
3499 | ||
3500 | cma_dev = ib_get_client_data(device, &cma_client); | |
3501 | if (!cma_dev) | |
3502 | return; | |
3503 | ||
3504 | mutex_lock(&lock); | |
3505 | list_del(&cma_dev->list); | |
3506 | mutex_unlock(&lock); | |
3507 | ||
3508 | cma_process_remove(cma_dev); | |
3509 | kfree(cma_dev); | |
3510 | } | |
3511 | ||
753f618a NM |
3512 | static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) |
3513 | { | |
3514 | struct nlmsghdr *nlh; | |
3515 | struct rdma_cm_id_stats *id_stats; | |
3516 | struct rdma_id_private *id_priv; | |
3517 | struct rdma_cm_id *id = NULL; | |
3518 | struct cma_device *cma_dev; | |
3519 | int i_dev = 0, i_id = 0; | |
3520 | ||
3521 | /* | |
3522 | * We export all of the IDs as a sequence of messages. Each | |
3523 | * ID gets its own netlink message. | |
3524 | */ | |
3525 | mutex_lock(&lock); | |
3526 | ||
3527 | list_for_each_entry(cma_dev, &dev_list, list) { | |
3528 | if (i_dev < cb->args[0]) { | |
3529 | i_dev++; | |
3530 | continue; | |
3531 | } | |
3532 | ||
3533 | i_id = 0; | |
3534 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3535 | if (i_id < cb->args[1]) { | |
3536 | i_id++; | |
3537 | continue; | |
3538 | } | |
3539 | ||
3540 | id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, | |
3541 | sizeof *id_stats, RDMA_NL_RDMA_CM, | |
3542 | RDMA_NL_RDMA_CM_ID_STATS); | |
3543 | if (!id_stats) | |
3544 | goto out; | |
3545 | ||
3546 | memset(id_stats, 0, sizeof *id_stats); | |
3547 | id = &id_priv->id; | |
3548 | id_stats->node_type = id->route.addr.dev_addr.dev_type; | |
3549 | id_stats->port_num = id->port_num; | |
3550 | id_stats->bound_dev_if = | |
3551 | id->route.addr.dev_addr.bound_dev_if; | |
3552 | ||
f4753834 | 3553 | if (cma_family(id_priv) == AF_INET) { |
753f618a NM |
3554 | if (ibnl_put_attr(skb, nlh, |
3555 | sizeof(struct sockaddr_in), | |
f4753834 | 3556 | cma_src_addr(id_priv), |
753f618a NM |
3557 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) { |
3558 | goto out; | |
3559 | } | |
3560 | if (ibnl_put_attr(skb, nlh, | |
3561 | sizeof(struct sockaddr_in), | |
f4753834 | 3562 | cma_dst_addr(id_priv), |
753f618a NM |
3563 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) { |
3564 | goto out; | |
3565 | } | |
f4753834 | 3566 | } else if (cma_family(id_priv) == AF_INET6) { |
753f618a NM |
3567 | if (ibnl_put_attr(skb, nlh, |
3568 | sizeof(struct sockaddr_in6), | |
f4753834 | 3569 | cma_src_addr(id_priv), |
753f618a NM |
3570 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) { |
3571 | goto out; | |
3572 | } | |
3573 | if (ibnl_put_attr(skb, nlh, | |
3574 | sizeof(struct sockaddr_in6), | |
f4753834 | 3575 | cma_dst_addr(id_priv), |
753f618a NM |
3576 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) { |
3577 | goto out; | |
3578 | } | |
3579 | } | |
3580 | ||
83e9502d | 3581 | id_stats->pid = id_priv->owner; |
753f618a NM |
3582 | id_stats->port_space = id->ps; |
3583 | id_stats->cm_state = id_priv->state; | |
3584 | id_stats->qp_num = id_priv->qp_num; | |
3585 | id_stats->qp_type = id->qp_type; | |
3586 | ||
3587 | i_id++; | |
3588 | } | |
3589 | ||
3590 | cb->args[1] = 0; | |
3591 | i_dev++; | |
3592 | } | |
3593 | ||
3594 | out: | |
3595 | mutex_unlock(&lock); | |
3596 | cb->args[0] = i_dev; | |
3597 | cb->args[1] = i_id; | |
3598 | ||
3599 | return skb->len; | |
3600 | } | |
3601 | ||
3602 | static const struct ibnl_client_cbs cma_cb_table[] = { | |
809d5fc9 G |
3603 | [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats, |
3604 | .module = THIS_MODULE }, | |
753f618a NM |
3605 | }; |
3606 | ||
716abb1f | 3607 | static int __init cma_init(void) |
e51060f0 | 3608 | { |
5d7220e8 | 3609 | int ret; |
227b60f5 | 3610 | |
c7f743a6 | 3611 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
3612 | if (!cma_wq) |
3613 | return -ENOMEM; | |
3614 | ||
c1a0b23b | 3615 | ib_sa_register_client(&sa_client); |
7a118df3 | 3616 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 3617 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 3618 | |
e51060f0 SH |
3619 | ret = ib_register_client(&cma_client); |
3620 | if (ret) | |
3621 | goto err; | |
753f618a NM |
3622 | |
3623 | if (ibnl_add_client(RDMA_NL_RDMA_CM, RDMA_NL_RDMA_CM_NUM_OPS, cma_cb_table)) | |
3624 | printk(KERN_WARNING "RDMA CMA: failed to add netlink callback\n"); | |
3625 | ||
e51060f0 SH |
3626 | return 0; |
3627 | ||
3628 | err: | |
dd5bdff8 | 3629 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3630 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3631 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3632 | destroy_workqueue(cma_wq); |
3633 | return ret; | |
3634 | } | |
3635 | ||
716abb1f | 3636 | static void __exit cma_cleanup(void) |
e51060f0 | 3637 | { |
753f618a | 3638 | ibnl_remove_client(RDMA_NL_RDMA_CM); |
e51060f0 | 3639 | ib_unregister_client(&cma_client); |
dd5bdff8 | 3640 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 3641 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 3642 | ib_sa_unregister_client(&sa_client); |
e51060f0 SH |
3643 | destroy_workqueue(cma_wq); |
3644 | idr_destroy(&sdp_ps); | |
3645 | idr_destroy(&tcp_ps); | |
628e5f6d | 3646 | idr_destroy(&udp_ps); |
c8f6a362 | 3647 | idr_destroy(&ipoib_ps); |
2d2e9415 | 3648 | idr_destroy(&ib_ps); |
e51060f0 SH |
3649 | } |
3650 | ||
3651 | module_init(cma_init); | |
3652 | module_exit(cma_cleanup); |