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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> | |
bee3c3c9 | 41 | #include <linux/igmp.h> |
e51060f0 | 42 | #include <linux/idr.h> |
07ebafba | 43 | #include <linux/inetdevice.h> |
5a0e3ad6 | 44 | #include <linux/slab.h> |
e4dd23d7 | 45 | #include <linux/module.h> |
366cddb4 | 46 | #include <net/route.h> |
e51060f0 | 47 | |
4be74b42 HE |
48 | #include <net/net_namespace.h> |
49 | #include <net/netns/generic.h> | |
e51060f0 | 50 | #include <net/tcp.h> |
1f5175ad | 51 | #include <net/ipv6.h> |
f887f2ac HE |
52 | #include <net/ip_fib.h> |
53 | #include <net/ip6_route.h> | |
e51060f0 SH |
54 | |
55 | #include <rdma/rdma_cm.h> | |
56 | #include <rdma/rdma_cm_ib.h> | |
753f618a | 57 | #include <rdma/rdma_netlink.h> |
2e2d190c | 58 | #include <rdma/ib.h> |
e51060f0 SH |
59 | #include <rdma/ib_cache.h> |
60 | #include <rdma/ib_cm.h> | |
61 | #include <rdma/ib_sa.h> | |
07ebafba | 62 | #include <rdma/iw_cm.h> |
e51060f0 | 63 | |
218a773f | 64 | #include "core_priv.h" |
a3b641af | 65 | #include "cma_priv.h" |
218a773f | 66 | |
e51060f0 SH |
67 | MODULE_AUTHOR("Sean Hefty"); |
68 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
69 | MODULE_LICENSE("Dual BSD/GPL"); | |
70 | ||
71 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
ab15c95a | 72 | #define CMA_QUERY_CLASSPORT_INFO_TIMEOUT 3000 |
d5bb7599 | 73 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 74 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 75 | #define CMA_IBOE_PACKET_LIFETIME 18 |
5ab2d89b | 76 | #define CMA_PREFERRED_ROCE_GID_TYPE IB_GID_TYPE_ROCE_UDP_ENCAP |
e51060f0 | 77 | |
2b1b5b60 SG |
78 | static const char * const cma_events[] = { |
79 | [RDMA_CM_EVENT_ADDR_RESOLVED] = "address resolved", | |
80 | [RDMA_CM_EVENT_ADDR_ERROR] = "address error", | |
81 | [RDMA_CM_EVENT_ROUTE_RESOLVED] = "route resolved ", | |
82 | [RDMA_CM_EVENT_ROUTE_ERROR] = "route error", | |
83 | [RDMA_CM_EVENT_CONNECT_REQUEST] = "connect request", | |
84 | [RDMA_CM_EVENT_CONNECT_RESPONSE] = "connect response", | |
85 | [RDMA_CM_EVENT_CONNECT_ERROR] = "connect error", | |
86 | [RDMA_CM_EVENT_UNREACHABLE] = "unreachable", | |
87 | [RDMA_CM_EVENT_REJECTED] = "rejected", | |
88 | [RDMA_CM_EVENT_ESTABLISHED] = "established", | |
89 | [RDMA_CM_EVENT_DISCONNECTED] = "disconnected", | |
90 | [RDMA_CM_EVENT_DEVICE_REMOVAL] = "device removal", | |
91 | [RDMA_CM_EVENT_MULTICAST_JOIN] = "multicast join", | |
92 | [RDMA_CM_EVENT_MULTICAST_ERROR] = "multicast error", | |
93 | [RDMA_CM_EVENT_ADDR_CHANGE] = "address change", | |
94 | [RDMA_CM_EVENT_TIMEWAIT_EXIT] = "timewait exit", | |
95 | }; | |
96 | ||
db7489e0 | 97 | const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event) |
2b1b5b60 SG |
98 | { |
99 | size_t index = event; | |
100 | ||
101 | return (index < ARRAY_SIZE(cma_events) && cma_events[index]) ? | |
102 | cma_events[index] : "unrecognized event"; | |
103 | } | |
104 | EXPORT_SYMBOL(rdma_event_msg); | |
105 | ||
77a5db13 SW |
106 | const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id, |
107 | int reason) | |
108 | { | |
109 | if (rdma_ib_or_roce(id->device, id->port_num)) | |
110 | return ibcm_reject_msg(reason); | |
111 | ||
112 | if (rdma_protocol_iwarp(id->device, id->port_num)) | |
113 | return iwcm_reject_msg(reason); | |
114 | ||
115 | WARN_ON_ONCE(1); | |
116 | return "unrecognized transport"; | |
117 | } | |
118 | EXPORT_SYMBOL(rdma_reject_msg); | |
119 | ||
5042a73d SW |
120 | bool rdma_is_consumer_reject(struct rdma_cm_id *id, int reason) |
121 | { | |
122 | if (rdma_ib_or_roce(id->device, id->port_num)) | |
123 | return reason == IB_CM_REJ_CONSUMER_DEFINED; | |
124 | ||
125 | if (rdma_protocol_iwarp(id->device, id->port_num)) | |
126 | return reason == -ECONNREFUSED; | |
127 | ||
128 | WARN_ON_ONCE(1); | |
129 | return false; | |
130 | } | |
131 | EXPORT_SYMBOL(rdma_is_consumer_reject); | |
132 | ||
5f244104 SW |
133 | const void *rdma_consumer_reject_data(struct rdma_cm_id *id, |
134 | struct rdma_cm_event *ev, u8 *data_len) | |
135 | { | |
136 | const void *p; | |
137 | ||
138 | if (rdma_is_consumer_reject(id, ev->status)) { | |
139 | *data_len = ev->param.conn.private_data_len; | |
140 | p = ev->param.conn.private_data; | |
141 | } else { | |
142 | *data_len = 0; | |
143 | p = NULL; | |
144 | } | |
145 | return p; | |
146 | } | |
147 | EXPORT_SYMBOL(rdma_consumer_reject_data); | |
148 | ||
fbdb0a91 SW |
149 | /** |
150 | * rdma_iw_cm_id() - return the iw_cm_id pointer for this cm_id. | |
151 | * @id: Communication Identifier | |
152 | */ | |
153 | struct iw_cm_id *rdma_iw_cm_id(struct rdma_cm_id *id) | |
154 | { | |
155 | struct rdma_id_private *id_priv; | |
156 | ||
157 | id_priv = container_of(id, struct rdma_id_private, id); | |
158 | if (id->device->node_type == RDMA_NODE_RNIC) | |
159 | return id_priv->cm_id.iw; | |
160 | return NULL; | |
161 | } | |
162 | EXPORT_SYMBOL(rdma_iw_cm_id); | |
163 | ||
164 | /** | |
165 | * rdma_res_to_id() - return the rdma_cm_id pointer for this restrack. | |
166 | * @res: rdma resource tracking entry pointer | |
167 | */ | |
168 | struct rdma_cm_id *rdma_res_to_id(struct rdma_restrack_entry *res) | |
169 | { | |
170 | struct rdma_id_private *id_priv = | |
171 | container_of(res, struct rdma_id_private, res); | |
172 | ||
173 | return &id_priv->id; | |
174 | } | |
175 | EXPORT_SYMBOL(rdma_res_to_id); | |
176 | ||
e51060f0 | 177 | static void cma_add_one(struct ib_device *device); |
7c1eb45a | 178 | static void cma_remove_one(struct ib_device *device, void *client_data); |
e51060f0 SH |
179 | |
180 | static struct ib_client cma_client = { | |
181 | .name = "cma", | |
182 | .add = cma_add_one, | |
183 | .remove = cma_remove_one | |
184 | }; | |
185 | ||
c1a0b23b | 186 | static struct ib_sa_client sa_client; |
e51060f0 SH |
187 | static LIST_HEAD(dev_list); |
188 | static LIST_HEAD(listen_any_list); | |
189 | static DEFINE_MUTEX(lock); | |
190 | static struct workqueue_struct *cma_wq; | |
c7d03a00 | 191 | static unsigned int cma_pernet_id; |
e51060f0 | 192 | |
4be74b42 HE |
193 | struct cma_pernet { |
194 | struct idr tcp_ps; | |
195 | struct idr udp_ps; | |
196 | struct idr ipoib_ps; | |
197 | struct idr ib_ps; | |
198 | }; | |
199 | ||
200 | static struct cma_pernet *cma_pernet(struct net *net) | |
201 | { | |
202 | return net_generic(net, cma_pernet_id); | |
203 | } | |
204 | ||
2253fc0c | 205 | static struct idr *cma_pernet_idr(struct net *net, enum rdma_ucm_port_space ps) |
aac978e1 | 206 | { |
4be74b42 HE |
207 | struct cma_pernet *pernet = cma_pernet(net); |
208 | ||
aac978e1 HE |
209 | switch (ps) { |
210 | case RDMA_PS_TCP: | |
4be74b42 | 211 | return &pernet->tcp_ps; |
aac978e1 | 212 | case RDMA_PS_UDP: |
4be74b42 | 213 | return &pernet->udp_ps; |
aac978e1 | 214 | case RDMA_PS_IPOIB: |
4be74b42 | 215 | return &pernet->ipoib_ps; |
aac978e1 | 216 | case RDMA_PS_IB: |
4be74b42 | 217 | return &pernet->ib_ps; |
aac978e1 HE |
218 | default: |
219 | return NULL; | |
220 | } | |
221 | } | |
222 | ||
e51060f0 SH |
223 | struct cma_device { |
224 | struct list_head list; | |
225 | struct ib_device *device; | |
e51060f0 SH |
226 | struct completion comp; |
227 | atomic_t refcount; | |
228 | struct list_head id_list; | |
045959db | 229 | enum ib_gid_type *default_gid_type; |
89052d78 | 230 | u8 *default_roce_tos; |
e51060f0 SH |
231 | }; |
232 | ||
e51060f0 | 233 | struct rdma_bind_list { |
2253fc0c | 234 | enum rdma_ucm_port_space ps; |
e51060f0 SH |
235 | struct hlist_head owners; |
236 | unsigned short port; | |
237 | }; | |
238 | ||
ab15c95a AV |
239 | struct class_port_info_context { |
240 | struct ib_class_port_info *class_port_info; | |
241 | struct ib_device *device; | |
242 | struct completion done; | |
243 | struct ib_sa_query *sa_query; | |
244 | u8 port_num; | |
245 | }; | |
246 | ||
2253fc0c | 247 | static int cma_ps_alloc(struct net *net, enum rdma_ucm_port_space ps, |
aac978e1 HE |
248 | struct rdma_bind_list *bind_list, int snum) |
249 | { | |
4be74b42 | 250 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
251 | |
252 | return idr_alloc(idr, bind_list, snum, snum + 1, GFP_KERNEL); | |
253 | } | |
254 | ||
4be74b42 | 255 | static struct rdma_bind_list *cma_ps_find(struct net *net, |
2253fc0c | 256 | enum rdma_ucm_port_space ps, int snum) |
aac978e1 | 257 | { |
4be74b42 | 258 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
259 | |
260 | return idr_find(idr, snum); | |
261 | } | |
262 | ||
2253fc0c SW |
263 | static void cma_ps_remove(struct net *net, enum rdma_ucm_port_space ps, |
264 | int snum) | |
aac978e1 | 265 | { |
4be74b42 | 266 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
267 | |
268 | idr_remove(idr, snum); | |
269 | } | |
270 | ||
68602120 SH |
271 | enum { |
272 | CMA_OPTION_AFONLY, | |
273 | }; | |
274 | ||
218a773f MB |
275 | void cma_ref_dev(struct cma_device *cma_dev) |
276 | { | |
277 | atomic_inc(&cma_dev->refcount); | |
278 | } | |
279 | ||
045959db MB |
280 | struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter, |
281 | void *cookie) | |
282 | { | |
283 | struct cma_device *cma_dev; | |
284 | struct cma_device *found_cma_dev = NULL; | |
285 | ||
286 | mutex_lock(&lock); | |
287 | ||
288 | list_for_each_entry(cma_dev, &dev_list, list) | |
289 | if (filter(cma_dev->device, cookie)) { | |
290 | found_cma_dev = cma_dev; | |
291 | break; | |
292 | } | |
293 | ||
294 | if (found_cma_dev) | |
295 | cma_ref_dev(found_cma_dev); | |
296 | mutex_unlock(&lock); | |
297 | return found_cma_dev; | |
298 | } | |
299 | ||
300 | int cma_get_default_gid_type(struct cma_device *cma_dev, | |
301 | unsigned int port) | |
302 | { | |
24dc831b | 303 | if (!rdma_is_port_valid(cma_dev->device, port)) |
045959db MB |
304 | return -EINVAL; |
305 | ||
306 | return cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)]; | |
307 | } | |
308 | ||
309 | int cma_set_default_gid_type(struct cma_device *cma_dev, | |
310 | unsigned int port, | |
311 | enum ib_gid_type default_gid_type) | |
312 | { | |
313 | unsigned long supported_gids; | |
314 | ||
24dc831b | 315 | if (!rdma_is_port_valid(cma_dev->device, port)) |
045959db MB |
316 | return -EINVAL; |
317 | ||
318 | supported_gids = roce_gid_type_mask_support(cma_dev->device, port); | |
319 | ||
320 | if (!(supported_gids & 1 << default_gid_type)) | |
321 | return -EINVAL; | |
322 | ||
323 | cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)] = | |
324 | default_gid_type; | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
89052d78 MD |
329 | int cma_get_default_roce_tos(struct cma_device *cma_dev, unsigned int port) |
330 | { | |
331 | if (!rdma_is_port_valid(cma_dev->device, port)) | |
332 | return -EINVAL; | |
333 | ||
334 | return cma_dev->default_roce_tos[port - rdma_start_port(cma_dev->device)]; | |
335 | } | |
336 | ||
337 | int cma_set_default_roce_tos(struct cma_device *cma_dev, unsigned int port, | |
338 | u8 default_roce_tos) | |
339 | { | |
340 | if (!rdma_is_port_valid(cma_dev->device, port)) | |
341 | return -EINVAL; | |
342 | ||
343 | cma_dev->default_roce_tos[port - rdma_start_port(cma_dev->device)] = | |
344 | default_roce_tos; | |
345 | ||
346 | return 0; | |
347 | } | |
045959db MB |
348 | struct ib_device *cma_get_ib_dev(struct cma_device *cma_dev) |
349 | { | |
350 | return cma_dev->device; | |
351 | } | |
352 | ||
e51060f0 SH |
353 | /* |
354 | * Device removal can occur at anytime, so we need extra handling to | |
355 | * serialize notifying the user of device removal with other callbacks. | |
356 | * We do this by disabling removal notification while a callback is in process, | |
357 | * and reporting it after the callback completes. | |
358 | */ | |
e51060f0 | 359 | |
c8f6a362 SH |
360 | struct cma_multicast { |
361 | struct rdma_id_private *id_priv; | |
362 | union { | |
363 | struct ib_sa_multicast *ib; | |
364 | } multicast; | |
365 | struct list_head list; | |
366 | void *context; | |
3f446754 | 367 | struct sockaddr_storage addr; |
3c86aa70 | 368 | struct kref mcref; |
ab15c95a | 369 | u8 join_state; |
c8f6a362 SH |
370 | }; |
371 | ||
e51060f0 SH |
372 | struct cma_work { |
373 | struct work_struct work; | |
374 | struct rdma_id_private *id; | |
550e5ca7 NM |
375 | enum rdma_cm_state old_state; |
376 | enum rdma_cm_state new_state; | |
e51060f0 SH |
377 | struct rdma_cm_event event; |
378 | }; | |
379 | ||
dd5bdff8 OG |
380 | struct cma_ndev_work { |
381 | struct work_struct work; | |
382 | struct rdma_id_private *id; | |
383 | struct rdma_cm_event event; | |
384 | }; | |
385 | ||
3c86aa70 EC |
386 | struct iboe_mcast_work { |
387 | struct work_struct work; | |
388 | struct rdma_id_private *id; | |
389 | struct cma_multicast *mc; | |
390 | }; | |
391 | ||
e51060f0 SH |
392 | union cma_ip_addr { |
393 | struct in6_addr ip6; | |
394 | struct { | |
1b90c137 AV |
395 | __be32 pad[3]; |
396 | __be32 addr; | |
e51060f0 SH |
397 | } ip4; |
398 | }; | |
399 | ||
400 | struct cma_hdr { | |
401 | u8 cma_version; | |
402 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 403 | __be16 port; |
e51060f0 SH |
404 | union cma_ip_addr src_addr; |
405 | union cma_ip_addr dst_addr; | |
406 | }; | |
407 | ||
e51060f0 | 408 | #define CMA_VERSION 0x00 |
e51060f0 | 409 | |
4c21b5bc | 410 | struct cma_req_info { |
2918c1a9 PP |
411 | struct sockaddr_storage listen_addr_storage; |
412 | struct sockaddr_storage src_addr_storage; | |
4c21b5bc | 413 | struct ib_device *device; |
4c21b5bc HE |
414 | union ib_gid local_gid; |
415 | __be64 service_id; | |
05e0b86c PP |
416 | int port; |
417 | bool has_gid; | |
4c21b5bc | 418 | u16 pkey; |
4c21b5bc HE |
419 | }; |
420 | ||
550e5ca7 | 421 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
422 | { |
423 | unsigned long flags; | |
424 | int ret; | |
425 | ||
426 | spin_lock_irqsave(&id_priv->lock, flags); | |
427 | ret = (id_priv->state == comp); | |
428 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
429 | return ret; | |
430 | } | |
431 | ||
432 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 433 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
434 | { |
435 | unsigned long flags; | |
436 | int ret; | |
437 | ||
438 | spin_lock_irqsave(&id_priv->lock, flags); | |
439 | if ((ret = (id_priv->state == comp))) | |
440 | id_priv->state = exch; | |
441 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
442 | return ret; | |
443 | } | |
444 | ||
550e5ca7 NM |
445 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
446 | enum rdma_cm_state exch) | |
e51060f0 SH |
447 | { |
448 | unsigned long flags; | |
550e5ca7 | 449 | enum rdma_cm_state old; |
e51060f0 SH |
450 | |
451 | spin_lock_irqsave(&id_priv->lock, flags); | |
452 | old = id_priv->state; | |
453 | id_priv->state = exch; | |
454 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
455 | return old; | |
456 | } | |
457 | ||
4c21b5bc | 458 | static inline u8 cma_get_ip_ver(const struct cma_hdr *hdr) |
e51060f0 SH |
459 | { |
460 | return hdr->ip_version >> 4; | |
461 | } | |
462 | ||
463 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
464 | { | |
465 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
466 | } | |
467 | ||
bee3c3c9 | 468 | static int cma_igmp_send(struct net_device *ndev, union ib_gid *mgid, bool join) |
e51060f0 | 469 | { |
bee3c3c9 MS |
470 | struct in_device *in_dev = NULL; |
471 | ||
472 | if (ndev) { | |
473 | rtnl_lock(); | |
474 | in_dev = __in_dev_get_rtnl(ndev); | |
475 | if (in_dev) { | |
476 | if (join) | |
477 | ip_mc_inc_group(in_dev, | |
478 | *(__be32 *)(mgid->raw + 12)); | |
479 | else | |
480 | ip_mc_dec_group(in_dev, | |
481 | *(__be32 *)(mgid->raw + 12)); | |
482 | } | |
483 | rtnl_unlock(); | |
484 | } | |
485 | return (in_dev) ? 0 : -ENODEV; | |
486 | } | |
487 | ||
045959db MB |
488 | static void _cma_attach_to_dev(struct rdma_id_private *id_priv, |
489 | struct cma_device *cma_dev) | |
e51060f0 | 490 | { |
218a773f | 491 | cma_ref_dev(cma_dev); |
e51060f0 SH |
492 | id_priv->cma_dev = cma_dev; |
493 | id_priv->id.device = cma_dev->device; | |
3c86aa70 EC |
494 | id_priv->id.route.addr.dev_addr.transport = |
495 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 | 496 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
917cb8a7 SW |
497 | if (id_priv->res.kern_name) |
498 | rdma_restrack_kadd(&id_priv->res); | |
499 | else | |
500 | rdma_restrack_uadd(&id_priv->res); | |
e51060f0 SH |
501 | } |
502 | ||
045959db MB |
503 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
504 | struct cma_device *cma_dev) | |
505 | { | |
506 | _cma_attach_to_dev(id_priv, cma_dev); | |
507 | id_priv->gid_type = | |
508 | cma_dev->default_gid_type[id_priv->id.port_num - | |
509 | rdma_start_port(cma_dev->device)]; | |
510 | } | |
511 | ||
218a773f | 512 | void cma_deref_dev(struct cma_device *cma_dev) |
e51060f0 SH |
513 | { |
514 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
515 | complete(&cma_dev->comp); | |
516 | } | |
517 | ||
3c86aa70 EC |
518 | static inline void release_mc(struct kref *kref) |
519 | { | |
520 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
521 | ||
522 | kfree(mc->multicast.ib); | |
523 | kfree(mc); | |
524 | } | |
525 | ||
a396d43a | 526 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 527 | { |
a396d43a | 528 | mutex_lock(&lock); |
e51060f0 SH |
529 | list_del(&id_priv->list); |
530 | cma_deref_dev(id_priv->cma_dev); | |
531 | id_priv->cma_dev = NULL; | |
a396d43a | 532 | mutex_unlock(&lock); |
e51060f0 SH |
533 | } |
534 | ||
f4753834 SH |
535 | static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv) |
536 | { | |
537 | return (struct sockaddr *) &id_priv->id.route.addr.src_addr; | |
538 | } | |
539 | ||
540 | static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv) | |
541 | { | |
542 | return (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
543 | } | |
544 | ||
545 | static inline unsigned short cma_family(struct rdma_id_private *id_priv) | |
546 | { | |
547 | return id_priv->id.route.addr.src_addr.ss_family; | |
548 | } | |
549 | ||
5c438135 | 550 | static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey) |
c8f6a362 SH |
551 | { |
552 | struct ib_sa_mcmember_rec rec; | |
553 | int ret = 0; | |
554 | ||
5c438135 SH |
555 | if (id_priv->qkey) { |
556 | if (qkey && id_priv->qkey != qkey) | |
557 | return -EINVAL; | |
d2ca39f2 | 558 | return 0; |
5c438135 SH |
559 | } |
560 | ||
561 | if (qkey) { | |
562 | id_priv->qkey = qkey; | |
563 | return 0; | |
564 | } | |
d2ca39f2 YE |
565 | |
566 | switch (id_priv->id.ps) { | |
c8f6a362 | 567 | case RDMA_PS_UDP: |
5c438135 | 568 | case RDMA_PS_IB: |
d2ca39f2 | 569 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
570 | break; |
571 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
572 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
573 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
574 | id_priv->id.port_num, &rec.mgid, | |
575 | &rec); | |
576 | if (!ret) | |
577 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
578 | break; |
579 | default: | |
580 | break; | |
581 | } | |
582 | return ret; | |
583 | } | |
584 | ||
680f920a SH |
585 | static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr) |
586 | { | |
587 | dev_addr->dev_type = ARPHRD_INFINIBAND; | |
588 | rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr); | |
589 | ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey)); | |
590 | } | |
591 | ||
592 | static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) | |
593 | { | |
594 | int ret; | |
595 | ||
596 | if (addr->sa_family != AF_IB) { | |
575c7e58 | 597 | ret = rdma_translate_ip(addr, dev_addr); |
680f920a SH |
598 | } else { |
599 | cma_translate_ib((struct sockaddr_ib *) addr, dev_addr); | |
600 | ret = 0; | |
601 | } | |
602 | ||
603 | return ret; | |
604 | } | |
605 | ||
4ed13a5f PP |
606 | static const struct ib_gid_attr * |
607 | cma_validate_port(struct ib_device *device, u8 port, | |
608 | enum ib_gid_type gid_type, | |
609 | union ib_gid *gid, | |
610 | struct rdma_id_private *id_priv) | |
7c11147d | 611 | { |
2493a57b PP |
612 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
613 | int bound_if_index = dev_addr->bound_dev_if; | |
4ed13a5f | 614 | const struct ib_gid_attr *sgid_attr; |
2493a57b | 615 | int dev_type = dev_addr->dev_type; |
abae1b71 | 616 | struct net_device *ndev = NULL; |
7c11147d MW |
617 | |
618 | if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port)) | |
4ed13a5f | 619 | return ERR_PTR(-ENODEV); |
7c11147d MW |
620 | |
621 | if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port)) | |
4ed13a5f | 622 | return ERR_PTR(-ENODEV); |
7c11147d | 623 | |
00db63c1 | 624 | if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) { |
66c74d74 | 625 | ndev = dev_get_by_index(dev_addr->net, bound_if_index); |
00db63c1 | 626 | if (!ndev) |
4ed13a5f | 627 | return ERR_PTR(-ENODEV); |
00db63c1 | 628 | } else { |
045959db | 629 | gid_type = IB_GID_TYPE_IB; |
00db63c1 | 630 | } |
abae1b71 | 631 | |
4ed13a5f | 632 | sgid_attr = rdma_find_gid_by_port(device, gid, gid_type, port, ndev); |
abae1b71 MB |
633 | if (ndev) |
634 | dev_put(ndev); | |
4ed13a5f PP |
635 | return sgid_attr; |
636 | } | |
7c11147d | 637 | |
4ed13a5f PP |
638 | static void cma_bind_sgid_attr(struct rdma_id_private *id_priv, |
639 | const struct ib_gid_attr *sgid_attr) | |
640 | { | |
641 | WARN_ON(id_priv->id.route.addr.dev_addr.sgid_attr); | |
642 | id_priv->id.route.addr.dev_addr.sgid_attr = sgid_attr; | |
7c11147d MW |
643 | } |
644 | ||
ff11c6cd PP |
645 | /** |
646 | * cma_acquire_dev_by_src_ip - Acquire cma device, port, gid attribute | |
647 | * based on source ip address. | |
648 | * @id_priv: cm_id which should be bound to cma device | |
649 | * | |
650 | * cma_acquire_dev_by_src_ip() binds cm id to cma device, port and GID attribute | |
651 | * based on source IP address. It returns 0 on success or error code otherwise. | |
652 | * It is applicable to active and passive side cm_id. | |
653 | */ | |
654 | static int cma_acquire_dev_by_src_ip(struct rdma_id_private *id_priv) | |
655 | { | |
656 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
657 | const struct ib_gid_attr *sgid_attr; | |
658 | union ib_gid gid, iboe_gid, *gidp; | |
659 | struct cma_device *cma_dev; | |
660 | enum ib_gid_type gid_type; | |
661 | int ret = -ENODEV; | |
ea1075ed | 662 | unsigned int port; |
ff11c6cd PP |
663 | |
664 | if (dev_addr->dev_type != ARPHRD_INFINIBAND && | |
665 | id_priv->id.ps == RDMA_PS_IPOIB) | |
666 | return -EINVAL; | |
667 | ||
668 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, | |
669 | &iboe_gid); | |
670 | ||
671 | memcpy(&gid, dev_addr->src_dev_addr + | |
672 | rdma_addr_gid_offset(dev_addr), sizeof(gid)); | |
673 | ||
674 | mutex_lock(&lock); | |
675 | list_for_each_entry(cma_dev, &dev_list, list) { | |
ea1075ed | 676 | rdma_for_each_port (cma_dev->device, port) { |
ff11c6cd PP |
677 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
678 | &iboe_gid : &gid; | |
679 | gid_type = cma_dev->default_gid_type[port - 1]; | |
680 | sgid_attr = cma_validate_port(cma_dev->device, port, | |
681 | gid_type, gidp, id_priv); | |
682 | if (!IS_ERR(sgid_attr)) { | |
683 | id_priv->id.port_num = port; | |
684 | cma_bind_sgid_attr(id_priv, sgid_attr); | |
685 | cma_attach_to_dev(id_priv, cma_dev); | |
686 | ret = 0; | |
687 | goto out; | |
688 | } | |
689 | } | |
690 | } | |
691 | out: | |
692 | mutex_unlock(&lock); | |
693 | return ret; | |
694 | } | |
695 | ||
41ab1cb7 PP |
696 | /** |
697 | * cma_ib_acquire_dev - Acquire cma device, port and SGID attribute | |
698 | * @id_priv: cm id to bind to cma device | |
699 | * @listen_id_priv: listener cm id to match against | |
700 | * @req: Pointer to req structure containaining incoming | |
701 | * request information | |
702 | * cma_ib_acquire_dev() acquires cma device, port and SGID attribute when | |
703 | * rdma device matches for listen_id and incoming request. It also verifies | |
704 | * that a GID table entry is present for the source address. | |
705 | * Returns 0 on success, or returns error code otherwise. | |
706 | */ | |
707 | static int cma_ib_acquire_dev(struct rdma_id_private *id_priv, | |
708 | const struct rdma_id_private *listen_id_priv, | |
709 | struct cma_req_info *req) | |
710 | { | |
711 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
712 | const struct ib_gid_attr *sgid_attr; | |
713 | enum ib_gid_type gid_type; | |
714 | union ib_gid gid; | |
715 | ||
716 | if (dev_addr->dev_type != ARPHRD_INFINIBAND && | |
717 | id_priv->id.ps == RDMA_PS_IPOIB) | |
718 | return -EINVAL; | |
719 | ||
720 | if (rdma_protocol_roce(req->device, req->port)) | |
721 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, | |
722 | &gid); | |
723 | else | |
724 | memcpy(&gid, dev_addr->src_dev_addr + | |
725 | rdma_addr_gid_offset(dev_addr), sizeof(gid)); | |
726 | ||
727 | gid_type = listen_id_priv->cma_dev->default_gid_type[req->port - 1]; | |
728 | sgid_attr = cma_validate_port(req->device, req->port, | |
729 | gid_type, &gid, id_priv); | |
730 | if (IS_ERR(sgid_attr)) | |
731 | return PTR_ERR(sgid_attr); | |
732 | ||
733 | id_priv->id.port_num = req->port; | |
734 | cma_bind_sgid_attr(id_priv, sgid_attr); | |
735 | /* Need to acquire lock to protect against reader | |
736 | * of cma_dev->id_list such as cma_netdev_callback() and | |
737 | * cma_process_remove(). | |
738 | */ | |
739 | mutex_lock(&lock); | |
740 | cma_attach_to_dev(id_priv, listen_id_priv->cma_dev); | |
741 | mutex_unlock(&lock); | |
742 | return 0; | |
743 | } | |
744 | ||
745 | static int cma_iw_acquire_dev(struct rdma_id_private *id_priv, | |
746 | const struct rdma_id_private *listen_id_priv) | |
e51060f0 | 747 | { |
c8f6a362 | 748 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
4ed13a5f | 749 | const struct ib_gid_attr *sgid_attr; |
e51060f0 | 750 | struct cma_device *cma_dev; |
4ed13a5f | 751 | enum ib_gid_type gid_type; |
e51060f0 | 752 | int ret = -ENODEV; |
41ab1cb7 | 753 | union ib_gid gid; |
7c11147d | 754 | u8 port; |
e51060f0 | 755 | |
7c11147d | 756 | if (dev_addr->dev_type != ARPHRD_INFINIBAND && |
2efdd6a0 MS |
757 | id_priv->id.ps == RDMA_PS_IPOIB) |
758 | return -EINVAL; | |
759 | ||
3c86aa70 | 760 | memcpy(&gid, dev_addr->src_dev_addr + |
41ab1cb7 PP |
761 | rdma_addr_gid_offset(dev_addr), sizeof(gid)); |
762 | ||
763 | mutex_lock(&lock); | |
7c11147d | 764 | |
ff11c6cd PP |
765 | cma_dev = listen_id_priv->cma_dev; |
766 | port = listen_id_priv->id.port_num; | |
ff11c6cd PP |
767 | gid_type = listen_id_priv->gid_type; |
768 | sgid_attr = cma_validate_port(cma_dev->device, port, | |
41ab1cb7 | 769 | gid_type, &gid, id_priv); |
ff11c6cd PP |
770 | if (!IS_ERR(sgid_attr)) { |
771 | id_priv->id.port_num = port; | |
772 | cma_bind_sgid_attr(id_priv, sgid_attr); | |
773 | ret = 0; | |
774 | goto out; | |
be9130cc | 775 | } |
7c11147d | 776 | |
e51060f0 | 777 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 | 778 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
ff11c6cd | 779 | if (listen_id_priv->cma_dev == cma_dev && |
be9130cc DL |
780 | listen_id_priv->id.port_num == port) |
781 | continue; | |
7c11147d | 782 | |
79d684f0 | 783 | gid_type = cma_dev->default_gid_type[port - 1]; |
4ed13a5f | 784 | sgid_attr = cma_validate_port(cma_dev->device, port, |
41ab1cb7 | 785 | gid_type, &gid, id_priv); |
4ed13a5f | 786 | if (!IS_ERR(sgid_attr)) { |
7c11147d | 787 | id_priv->id.port_num = port; |
4ed13a5f PP |
788 | cma_bind_sgid_attr(id_priv, sgid_attr); |
789 | ret = 0; | |
7c11147d | 790 | goto out; |
3c86aa70 | 791 | } |
e51060f0 SH |
792 | } |
793 | } | |
3c86aa70 EC |
794 | |
795 | out: | |
796 | if (!ret) | |
797 | cma_attach_to_dev(id_priv, cma_dev); | |
798 | ||
a396d43a | 799 | mutex_unlock(&lock); |
e51060f0 SH |
800 | return ret; |
801 | } | |
802 | ||
f17df3b0 SH |
803 | /* |
804 | * Select the source IB device and address to reach the destination IB address. | |
805 | */ | |
806 | static int cma_resolve_ib_dev(struct rdma_id_private *id_priv) | |
807 | { | |
808 | struct cma_device *cma_dev, *cur_dev; | |
809 | struct sockaddr_ib *addr; | |
810 | union ib_gid gid, sgid, *dgid; | |
811 | u16 pkey, index; | |
8fb488d7 | 812 | u8 p; |
93b1f29d | 813 | enum ib_port_state port_state; |
f17df3b0 SH |
814 | int i; |
815 | ||
816 | cma_dev = NULL; | |
817 | addr = (struct sockaddr_ib *) cma_dst_addr(id_priv); | |
818 | dgid = (union ib_gid *) &addr->sib_addr; | |
819 | pkey = ntohs(addr->sib_pkey); | |
820 | ||
954a8e3a | 821 | mutex_lock(&lock); |
f17df3b0 | 822 | list_for_each_entry(cur_dev, &dev_list, list) { |
f17df3b0 | 823 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { |
30a74ef4 | 824 | if (!rdma_cap_af_ib(cur_dev->device, p)) |
fef60902 MW |
825 | continue; |
826 | ||
f17df3b0 SH |
827 | if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index)) |
828 | continue; | |
829 | ||
93b1f29d JW |
830 | if (ib_get_cached_port_state(cur_dev->device, p, &port_state)) |
831 | continue; | |
1dfce294 PP |
832 | for (i = 0; !rdma_query_gid(cur_dev->device, |
833 | p, i, &gid); | |
55ee3ab2 | 834 | i++) { |
f17df3b0 SH |
835 | if (!memcmp(&gid, dgid, sizeof(gid))) { |
836 | cma_dev = cur_dev; | |
837 | sgid = gid; | |
8fb488d7 | 838 | id_priv->id.port_num = p; |
f17df3b0 SH |
839 | goto found; |
840 | } | |
841 | ||
842 | if (!cma_dev && (gid.global.subnet_prefix == | |
93b1f29d JW |
843 | dgid->global.subnet_prefix) && |
844 | port_state == IB_PORT_ACTIVE) { | |
f17df3b0 SH |
845 | cma_dev = cur_dev; |
846 | sgid = gid; | |
8fb488d7 | 847 | id_priv->id.port_num = p; |
954a8e3a | 848 | goto found; |
f17df3b0 SH |
849 | } |
850 | } | |
851 | } | |
852 | } | |
954a8e3a PP |
853 | mutex_unlock(&lock); |
854 | return -ENODEV; | |
f17df3b0 SH |
855 | |
856 | found: | |
857 | cma_attach_to_dev(id_priv, cma_dev); | |
954a8e3a PP |
858 | mutex_unlock(&lock); |
859 | addr = (struct sockaddr_ib *)cma_src_addr(id_priv); | |
860 | memcpy(&addr->sib_addr, &sgid, sizeof(sgid)); | |
f17df3b0 SH |
861 | cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr); |
862 | return 0; | |
863 | } | |
864 | ||
e51060f0 SH |
865 | static void cma_deref_id(struct rdma_id_private *id_priv) |
866 | { | |
867 | if (atomic_dec_and_test(&id_priv->refcount)) | |
868 | complete(&id_priv->comp); | |
869 | } | |
870 | ||
00313983 SW |
871 | struct rdma_cm_id *__rdma_create_id(struct net *net, |
872 | rdma_cm_event_handler event_handler, | |
2253fc0c | 873 | void *context, enum rdma_ucm_port_space ps, |
00313983 | 874 | enum ib_qp_type qp_type, const char *caller) |
e51060f0 SH |
875 | { |
876 | struct rdma_id_private *id_priv; | |
877 | ||
878 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
879 | if (!id_priv) | |
880 | return ERR_PTR(-ENOMEM); | |
881 | ||
2165fc26 | 882 | rdma_restrack_set_task(&id_priv->res, caller); |
e11fef9f | 883 | id_priv->res.type = RDMA_RESTRACK_CM_ID; |
550e5ca7 | 884 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
885 | id_priv->id.context = context; |
886 | id_priv->id.event_handler = event_handler; | |
887 | id_priv->id.ps = ps; | |
b26f9b99 | 888 | id_priv->id.qp_type = qp_type; |
89052d78 | 889 | id_priv->tos_set = false; |
2c1619ed | 890 | id_priv->timeout_set = false; |
79d684f0 | 891 | id_priv->gid_type = IB_GID_TYPE_IB; |
e51060f0 | 892 | spin_lock_init(&id_priv->lock); |
c5483388 | 893 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
894 | init_completion(&id_priv->comp); |
895 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 896 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 897 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 898 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 | 899 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
fa20105e | 900 | id_priv->id.route.addr.dev_addr.net = get_net(net); |
23a9cd2a | 901 | id_priv->seq_num &= 0x00ffffff; |
e51060f0 SH |
902 | |
903 | return &id_priv->id; | |
904 | } | |
00313983 | 905 | EXPORT_SYMBOL(__rdma_create_id); |
e51060f0 | 906 | |
c8f6a362 | 907 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
908 | { |
909 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 910 | int qp_attr_mask, ret; |
e51060f0 | 911 | |
c8f6a362 SH |
912 | qp_attr.qp_state = IB_QPS_INIT; |
913 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
914 | if (ret) |
915 | return ret; | |
916 | ||
c8f6a362 SH |
917 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
918 | if (ret) | |
919 | return ret; | |
920 | ||
921 | qp_attr.qp_state = IB_QPS_RTR; | |
922 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
923 | if (ret) | |
924 | return ret; | |
925 | ||
926 | qp_attr.qp_state = IB_QPS_RTS; | |
927 | qp_attr.sq_psn = 0; | |
928 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
929 | ||
930 | return ret; | |
e51060f0 SH |
931 | } |
932 | ||
c8f6a362 | 933 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
934 | { |
935 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 936 | int qp_attr_mask, ret; |
07ebafba TT |
937 | |
938 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
939 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
940 | if (ret) | |
941 | return ret; | |
07ebafba | 942 | |
c8f6a362 | 943 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
944 | } |
945 | ||
e51060f0 SH |
946 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
947 | struct ib_qp_init_attr *qp_init_attr) | |
948 | { | |
949 | struct rdma_id_private *id_priv; | |
950 | struct ib_qp *qp; | |
951 | int ret; | |
952 | ||
953 | id_priv = container_of(id, struct rdma_id_private, id); | |
954 | if (id->device != pd->device) | |
955 | return -EINVAL; | |
956 | ||
0691a286 | 957 | qp_init_attr->port_num = id->port_num; |
e51060f0 SH |
958 | qp = ib_create_qp(pd, qp_init_attr); |
959 | if (IS_ERR(qp)) | |
960 | return PTR_ERR(qp); | |
961 | ||
b26f9b99 | 962 | if (id->qp_type == IB_QPT_UD) |
c8f6a362 SH |
963 | ret = cma_init_ud_qp(id_priv, qp); |
964 | else | |
965 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
966 | if (ret) |
967 | goto err; | |
968 | ||
969 | id->qp = qp; | |
970 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
971 | id_priv->srq = (qp->srq != NULL); |
972 | return 0; | |
973 | err: | |
974 | ib_destroy_qp(qp); | |
975 | return ret; | |
976 | } | |
977 | EXPORT_SYMBOL(rdma_create_qp); | |
978 | ||
979 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
980 | { | |
c5483388 SH |
981 | struct rdma_id_private *id_priv; |
982 | ||
983 | id_priv = container_of(id, struct rdma_id_private, id); | |
984 | mutex_lock(&id_priv->qp_mutex); | |
985 | ib_destroy_qp(id_priv->id.qp); | |
986 | id_priv->id.qp = NULL; | |
987 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
988 | } |
989 | EXPORT_SYMBOL(rdma_destroy_qp); | |
990 | ||
5851bb89 SH |
991 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
992 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
993 | { |
994 | struct ib_qp_attr qp_attr; | |
995 | int qp_attr_mask, ret; | |
996 | ||
c5483388 SH |
997 | mutex_lock(&id_priv->qp_mutex); |
998 | if (!id_priv->id.qp) { | |
999 | ret = 0; | |
1000 | goto out; | |
1001 | } | |
e51060f0 SH |
1002 | |
1003 | /* Need to update QP attributes from default values. */ | |
1004 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 1005 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 1006 | if (ret) |
c5483388 | 1007 | goto out; |
e51060f0 | 1008 | |
c5483388 | 1009 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 1010 | if (ret) |
c5483388 | 1011 | goto out; |
e51060f0 SH |
1012 | |
1013 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 1014 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 1015 | if (ret) |
c5483388 | 1016 | goto out; |
e51060f0 | 1017 | |
fef60902 MW |
1018 | BUG_ON(id_priv->cma_dev->device != id_priv->id.device); |
1019 | ||
5851bb89 SH |
1020 | if (conn_param) |
1021 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
1022 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
1023 | out: | |
1024 | mutex_unlock(&id_priv->qp_mutex); | |
1025 | return ret; | |
e51060f0 SH |
1026 | } |
1027 | ||
5851bb89 SH |
1028 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
1029 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
1030 | { |
1031 | struct ib_qp_attr qp_attr; | |
1032 | int qp_attr_mask, ret; | |
1033 | ||
c5483388 SH |
1034 | mutex_lock(&id_priv->qp_mutex); |
1035 | if (!id_priv->id.qp) { | |
1036 | ret = 0; | |
1037 | goto out; | |
1038 | } | |
e51060f0 SH |
1039 | |
1040 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 1041 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 1042 | if (ret) |
c5483388 | 1043 | goto out; |
e51060f0 | 1044 | |
5851bb89 SH |
1045 | if (conn_param) |
1046 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
1047 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
1048 | out: | |
1049 | mutex_unlock(&id_priv->qp_mutex); | |
1050 | return ret; | |
e51060f0 SH |
1051 | } |
1052 | ||
c5483388 | 1053 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
1054 | { |
1055 | struct ib_qp_attr qp_attr; | |
c5483388 | 1056 | int ret; |
e51060f0 | 1057 | |
c5483388 SH |
1058 | mutex_lock(&id_priv->qp_mutex); |
1059 | if (!id_priv->id.qp) { | |
1060 | ret = 0; | |
1061 | goto out; | |
1062 | } | |
e51060f0 SH |
1063 | |
1064 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
1065 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
1066 | out: | |
1067 | mutex_unlock(&id_priv->qp_mutex); | |
1068 | return ret; | |
e51060f0 SH |
1069 | } |
1070 | ||
c8f6a362 SH |
1071 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
1072 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
1073 | { | |
1074 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
1075 | int ret; | |
3c86aa70 EC |
1076 | u16 pkey; |
1077 | ||
227128fc | 1078 | if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num)) |
3c86aa70 | 1079 | pkey = 0xffff; |
fef60902 MW |
1080 | else |
1081 | pkey = ib_addr_get_pkey(dev_addr); | |
c8f6a362 SH |
1082 | |
1083 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
3c86aa70 | 1084 | pkey, &qp_attr->pkey_index); |
c8f6a362 SH |
1085 | if (ret) |
1086 | return ret; | |
1087 | ||
1088 | qp_attr->port_num = id_priv->id.port_num; | |
1089 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
1090 | ||
b26f9b99 | 1091 | if (id_priv->id.qp_type == IB_QPT_UD) { |
5c438135 | 1092 | ret = cma_set_qkey(id_priv, 0); |
d2ca39f2 YE |
1093 | if (ret) |
1094 | return ret; | |
1095 | ||
c8f6a362 SH |
1096 | qp_attr->qkey = id_priv->qkey; |
1097 | *qp_attr_mask |= IB_QP_QKEY; | |
1098 | } else { | |
1099 | qp_attr->qp_access_flags = 0; | |
1100 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
1101 | } | |
1102 | return 0; | |
1103 | } | |
1104 | ||
e51060f0 SH |
1105 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
1106 | int *qp_attr_mask) | |
1107 | { | |
1108 | struct rdma_id_private *id_priv; | |
c8f6a362 | 1109 | int ret = 0; |
e51060f0 SH |
1110 | |
1111 | id_priv = container_of(id, struct rdma_id_private, id); | |
72219cea | 1112 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 1113 | if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) |
c8f6a362 SH |
1114 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); |
1115 | else | |
1116 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
1117 | qp_attr_mask); | |
dd5f03be | 1118 | |
e51060f0 SH |
1119 | if (qp_attr->qp_state == IB_QPS_RTR) |
1120 | qp_attr->rq_psn = id_priv->seq_num; | |
04215330 | 1121 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
c8f6a362 | 1122 | if (!id_priv->cm_id.iw) { |
8f076531 | 1123 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
1124 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
1125 | } else | |
1126 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
1127 | qp_attr_mask); | |
a62ab66b IM |
1128 | qp_attr->port_num = id_priv->id.port_num; |
1129 | *qp_attr_mask |= IB_QP_PORT; | |
21655afc | 1130 | } else |
e51060f0 | 1131 | ret = -ENOSYS; |
e51060f0 | 1132 | |
2c1619ed DG |
1133 | if ((*qp_attr_mask & IB_QP_TIMEOUT) && id_priv->timeout_set) |
1134 | qp_attr->timeout = id_priv->timeout; | |
1135 | ||
e51060f0 SH |
1136 | return ret; |
1137 | } | |
1138 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
1139 | ||
ca3a8ace | 1140 | static inline bool cma_zero_addr(const struct sockaddr *addr) |
e51060f0 | 1141 | { |
2e2d190c SH |
1142 | switch (addr->sa_family) { |
1143 | case AF_INET: | |
1144 | return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
1145 | case AF_INET6: | |
ca3a8ace | 1146 | return ipv6_addr_any(&((struct sockaddr_in6 *)addr)->sin6_addr); |
2e2d190c | 1147 | case AF_IB: |
ca3a8ace | 1148 | return ib_addr_any(&((struct sockaddr_ib *)addr)->sib_addr); |
2e2d190c | 1149 | default: |
ca3a8ace | 1150 | return false; |
e51060f0 SH |
1151 | } |
1152 | } | |
1153 | ||
ca3a8ace | 1154 | static inline bool cma_loopback_addr(const struct sockaddr *addr) |
e51060f0 | 1155 | { |
2e2d190c SH |
1156 | switch (addr->sa_family) { |
1157 | case AF_INET: | |
ca3a8ace PP |
1158 | return ipv4_is_loopback( |
1159 | ((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
2e2d190c | 1160 | case AF_INET6: |
ca3a8ace PP |
1161 | return ipv6_addr_loopback( |
1162 | &((struct sockaddr_in6 *)addr)->sin6_addr); | |
2e2d190c | 1163 | case AF_IB: |
ca3a8ace PP |
1164 | return ib_addr_loopback( |
1165 | &((struct sockaddr_ib *)addr)->sib_addr); | |
2e2d190c | 1166 | default: |
ca3a8ace | 1167 | return false; |
2e2d190c | 1168 | } |
e51060f0 SH |
1169 | } |
1170 | ||
ca3a8ace | 1171 | static inline bool cma_any_addr(const struct sockaddr *addr) |
e51060f0 SH |
1172 | { |
1173 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
1174 | } | |
1175 | ||
43b752da HS |
1176 | static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) |
1177 | { | |
1178 | if (src->sa_family != dst->sa_family) | |
1179 | return -1; | |
1180 | ||
1181 | switch (src->sa_family) { | |
1182 | case AF_INET: | |
1183 | return ((struct sockaddr_in *) src)->sin_addr.s_addr != | |
1184 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
2e2d190c | 1185 | case AF_INET6: |
43b752da HS |
1186 | return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, |
1187 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
2e2d190c SH |
1188 | default: |
1189 | return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr, | |
1190 | &((struct sockaddr_ib *) dst)->sib_addr); | |
43b752da HS |
1191 | } |
1192 | } | |
1193 | ||
2df7dba8 | 1194 | static __be16 cma_port(const struct sockaddr *addr) |
628e5f6d | 1195 | { |
58afdcb7 SH |
1196 | struct sockaddr_ib *sib; |
1197 | ||
1198 | switch (addr->sa_family) { | |
1199 | case AF_INET: | |
628e5f6d | 1200 | return ((struct sockaddr_in *) addr)->sin_port; |
58afdcb7 | 1201 | case AF_INET6: |
628e5f6d | 1202 | return ((struct sockaddr_in6 *) addr)->sin6_port; |
58afdcb7 SH |
1203 | case AF_IB: |
1204 | sib = (struct sockaddr_ib *) addr; | |
1205 | return htons((u16) (be64_to_cpu(sib->sib_sid) & | |
1206 | be64_to_cpu(sib->sib_sid_mask))); | |
1207 | default: | |
1208 | return 0; | |
1209 | } | |
628e5f6d SH |
1210 | } |
1211 | ||
2df7dba8 | 1212 | static inline int cma_any_port(const struct sockaddr *addr) |
e51060f0 | 1213 | { |
628e5f6d | 1214 | return !cma_port(addr); |
e51060f0 SH |
1215 | } |
1216 | ||
0c505f70 HE |
1217 | static void cma_save_ib_info(struct sockaddr *src_addr, |
1218 | struct sockaddr *dst_addr, | |
e7ff98ae PP |
1219 | const struct rdma_cm_id *listen_id, |
1220 | const struct sa_path_rec *path) | |
e51060f0 | 1221 | { |
fbaa1a6d SH |
1222 | struct sockaddr_ib *listen_ib, *ib; |
1223 | ||
1224 | listen_ib = (struct sockaddr_ib *) &listen_id->route.addr.src_addr; | |
0c505f70 HE |
1225 | if (src_addr) { |
1226 | ib = (struct sockaddr_ib *)src_addr; | |
1227 | ib->sib_family = AF_IB; | |
1228 | if (path) { | |
1229 | ib->sib_pkey = path->pkey; | |
1230 | ib->sib_flowinfo = path->flow_label; | |
1231 | memcpy(&ib->sib_addr, &path->sgid, 16); | |
d3957b86 | 1232 | ib->sib_sid = path->service_id; |
0c505f70 HE |
1233 | ib->sib_scope_id = 0; |
1234 | } else { | |
1235 | ib->sib_pkey = listen_ib->sib_pkey; | |
1236 | ib->sib_flowinfo = listen_ib->sib_flowinfo; | |
1237 | ib->sib_addr = listen_ib->sib_addr; | |
1238 | ib->sib_sid = listen_ib->sib_sid; | |
1239 | ib->sib_scope_id = listen_ib->sib_scope_id; | |
1240 | } | |
1241 | ib->sib_sid_mask = cpu_to_be64(0xffffffffffffffffULL); | |
c07678bb | 1242 | } |
0c505f70 HE |
1243 | if (dst_addr) { |
1244 | ib = (struct sockaddr_ib *)dst_addr; | |
1245 | ib->sib_family = AF_IB; | |
1246 | if (path) { | |
1247 | ib->sib_pkey = path->pkey; | |
1248 | ib->sib_flowinfo = path->flow_label; | |
1249 | memcpy(&ib->sib_addr, &path->dgid, 16); | |
1250 | } | |
c07678bb | 1251 | } |
fbaa1a6d | 1252 | } |
e51060f0 | 1253 | |
c50e90d0 AB |
1254 | static void cma_save_ip4_info(struct sockaddr_in *src_addr, |
1255 | struct sockaddr_in *dst_addr, | |
0c505f70 HE |
1256 | struct cma_hdr *hdr, |
1257 | __be16 local_port) | |
fbaa1a6d | 1258 | { |
0c505f70 | 1259 | if (src_addr) { |
c50e90d0 AB |
1260 | *src_addr = (struct sockaddr_in) { |
1261 | .sin_family = AF_INET, | |
1262 | .sin_addr.s_addr = hdr->dst_addr.ip4.addr, | |
1263 | .sin_port = local_port, | |
1264 | }; | |
0c505f70 | 1265 | } |
fbaa1a6d | 1266 | |
0c505f70 | 1267 | if (dst_addr) { |
c50e90d0 AB |
1268 | *dst_addr = (struct sockaddr_in) { |
1269 | .sin_family = AF_INET, | |
1270 | .sin_addr.s_addr = hdr->src_addr.ip4.addr, | |
1271 | .sin_port = hdr->port, | |
1272 | }; | |
0c505f70 | 1273 | } |
e51060f0 SH |
1274 | } |
1275 | ||
c50e90d0 AB |
1276 | static void cma_save_ip6_info(struct sockaddr_in6 *src_addr, |
1277 | struct sockaddr_in6 *dst_addr, | |
0c505f70 HE |
1278 | struct cma_hdr *hdr, |
1279 | __be16 local_port) | |
e51060f0 | 1280 | { |
0c505f70 | 1281 | if (src_addr) { |
c50e90d0 AB |
1282 | *src_addr = (struct sockaddr_in6) { |
1283 | .sin6_family = AF_INET6, | |
1284 | .sin6_addr = hdr->dst_addr.ip6, | |
1285 | .sin6_port = local_port, | |
1286 | }; | |
0c505f70 | 1287 | } |
fbaa1a6d | 1288 | |
0c505f70 | 1289 | if (dst_addr) { |
c50e90d0 AB |
1290 | *dst_addr = (struct sockaddr_in6) { |
1291 | .sin6_family = AF_INET6, | |
1292 | .sin6_addr = hdr->src_addr.ip6, | |
1293 | .sin6_port = hdr->port, | |
1294 | }; | |
0c505f70 | 1295 | } |
fbaa1a6d SH |
1296 | } |
1297 | ||
0c505f70 | 1298 | static u16 cma_port_from_service_id(__be64 service_id) |
fbaa1a6d | 1299 | { |
0c505f70 HE |
1300 | return (u16)be64_to_cpu(service_id); |
1301 | } | |
fbaa1a6d | 1302 | |
0c505f70 HE |
1303 | static int cma_save_ip_info(struct sockaddr *src_addr, |
1304 | struct sockaddr *dst_addr, | |
e7ff98ae | 1305 | const struct ib_cm_event *ib_event, |
0c505f70 HE |
1306 | __be64 service_id) |
1307 | { | |
1308 | struct cma_hdr *hdr; | |
1309 | __be16 port; | |
fbaa1a6d SH |
1310 | |
1311 | hdr = ib_event->private_data; | |
1312 | if (hdr->cma_version != CMA_VERSION) | |
1313 | return -EINVAL; | |
1314 | ||
0c505f70 HE |
1315 | port = htons(cma_port_from_service_id(service_id)); |
1316 | ||
fbaa1a6d | 1317 | switch (cma_get_ip_ver(hdr)) { |
e51060f0 | 1318 | case 4: |
c50e90d0 AB |
1319 | cma_save_ip4_info((struct sockaddr_in *)src_addr, |
1320 | (struct sockaddr_in *)dst_addr, hdr, port); | |
e51060f0 SH |
1321 | break; |
1322 | case 6: | |
c50e90d0 AB |
1323 | cma_save_ip6_info((struct sockaddr_in6 *)src_addr, |
1324 | (struct sockaddr_in6 *)dst_addr, hdr, port); | |
e51060f0 SH |
1325 | break; |
1326 | default: | |
4c21b5bc | 1327 | return -EAFNOSUPPORT; |
e51060f0 | 1328 | } |
0c505f70 | 1329 | |
fbaa1a6d | 1330 | return 0; |
e51060f0 SH |
1331 | } |
1332 | ||
0c505f70 HE |
1333 | static int cma_save_net_info(struct sockaddr *src_addr, |
1334 | struct sockaddr *dst_addr, | |
e7ff98ae PP |
1335 | const struct rdma_cm_id *listen_id, |
1336 | const struct ib_cm_event *ib_event, | |
0c505f70 HE |
1337 | sa_family_t sa_family, __be64 service_id) |
1338 | { | |
1339 | if (sa_family == AF_IB) { | |
1340 | if (ib_event->event == IB_CM_REQ_RECEIVED) | |
1341 | cma_save_ib_info(src_addr, dst_addr, listen_id, | |
1342 | ib_event->param.req_rcvd.primary_path); | |
1343 | else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) | |
1344 | cma_save_ib_info(src_addr, dst_addr, listen_id, NULL); | |
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | return cma_save_ip_info(src_addr, dst_addr, ib_event, service_id); | |
1349 | } | |
1350 | ||
4c21b5bc HE |
1351 | static int cma_save_req_info(const struct ib_cm_event *ib_event, |
1352 | struct cma_req_info *req) | |
1353 | { | |
1354 | const struct ib_cm_req_event_param *req_param = | |
1355 | &ib_event->param.req_rcvd; | |
1356 | const struct ib_cm_sidr_req_event_param *sidr_param = | |
1357 | &ib_event->param.sidr_req_rcvd; | |
1358 | ||
1359 | switch (ib_event->event) { | |
1360 | case IB_CM_REQ_RECEIVED: | |
1361 | req->device = req_param->listen_id->device; | |
1362 | req->port = req_param->port; | |
1363 | memcpy(&req->local_gid, &req_param->primary_path->sgid, | |
1364 | sizeof(req->local_gid)); | |
1365 | req->has_gid = true; | |
d3957b86 | 1366 | req->service_id = req_param->primary_path->service_id; |
ab3964ad | 1367 | req->pkey = be16_to_cpu(req_param->primary_path->pkey); |
84424a7f HE |
1368 | if (req->pkey != req_param->bth_pkey) |
1369 | pr_warn_ratelimited("RDMA CMA: got different BTH P_Key (0x%x) and primary path P_Key (0x%x)\n" | |
1370 | "RDMA CMA: in the future this may cause the request to be dropped\n", | |
1371 | req_param->bth_pkey, req->pkey); | |
4c21b5bc HE |
1372 | break; |
1373 | case IB_CM_SIDR_REQ_RECEIVED: | |
1374 | req->device = sidr_param->listen_id->device; | |
1375 | req->port = sidr_param->port; | |
1376 | req->has_gid = false; | |
1377 | req->service_id = sidr_param->service_id; | |
ab3964ad | 1378 | req->pkey = sidr_param->pkey; |
84424a7f HE |
1379 | if (req->pkey != sidr_param->bth_pkey) |
1380 | pr_warn_ratelimited("RDMA CMA: got different BTH P_Key (0x%x) and SIDR request payload P_Key (0x%x)\n" | |
1381 | "RDMA CMA: in the future this may cause the request to be dropped\n", | |
1382 | sidr_param->bth_pkey, req->pkey); | |
4c21b5bc HE |
1383 | break; |
1384 | default: | |
1385 | return -EINVAL; | |
1386 | } | |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
f887f2ac HE |
1391 | static bool validate_ipv4_net_dev(struct net_device *net_dev, |
1392 | const struct sockaddr_in *dst_addr, | |
1393 | const struct sockaddr_in *src_addr) | |
1394 | { | |
1395 | __be32 daddr = dst_addr->sin_addr.s_addr, | |
1396 | saddr = src_addr->sin_addr.s_addr; | |
1397 | struct fib_result res; | |
1398 | struct flowi4 fl4; | |
1399 | int err; | |
1400 | bool ret; | |
1401 | ||
1402 | if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) || | |
1403 | ipv4_is_lbcast(daddr) || ipv4_is_zeronet(saddr) || | |
1404 | ipv4_is_zeronet(daddr) || ipv4_is_loopback(daddr) || | |
1405 | ipv4_is_loopback(saddr)) | |
1406 | return false; | |
1407 | ||
1408 | memset(&fl4, 0, sizeof(fl4)); | |
1409 | fl4.flowi4_iif = net_dev->ifindex; | |
1410 | fl4.daddr = daddr; | |
1411 | fl4.saddr = saddr; | |
1412 | ||
1413 | rcu_read_lock(); | |
1414 | err = fib_lookup(dev_net(net_dev), &fl4, &res, 0); | |
d3632493 | 1415 | ret = err == 0 && FIB_RES_DEV(res) == net_dev; |
f887f2ac HE |
1416 | rcu_read_unlock(); |
1417 | ||
1418 | return ret; | |
1419 | } | |
1420 | ||
1421 | static bool validate_ipv6_net_dev(struct net_device *net_dev, | |
1422 | const struct sockaddr_in6 *dst_addr, | |
1423 | const struct sockaddr_in6 *src_addr) | |
1424 | { | |
1425 | #if IS_ENABLED(CONFIG_IPV6) | |
1426 | const int strict = ipv6_addr_type(&dst_addr->sin6_addr) & | |
1427 | IPV6_ADDR_LINKLOCAL; | |
1428 | struct rt6_info *rt = rt6_lookup(dev_net(net_dev), &dst_addr->sin6_addr, | |
1429 | &src_addr->sin6_addr, net_dev->ifindex, | |
b75cc8f9 | 1430 | NULL, strict); |
f887f2ac HE |
1431 | bool ret; |
1432 | ||
1433 | if (!rt) | |
1434 | return false; | |
1435 | ||
1436 | ret = rt->rt6i_idev->dev == net_dev; | |
1437 | ip6_rt_put(rt); | |
1438 | ||
1439 | return ret; | |
1440 | #else | |
1441 | return false; | |
1442 | #endif | |
1443 | } | |
1444 | ||
1445 | static bool validate_net_dev(struct net_device *net_dev, | |
1446 | const struct sockaddr *daddr, | |
1447 | const struct sockaddr *saddr) | |
1448 | { | |
1449 | const struct sockaddr_in *daddr4 = (const struct sockaddr_in *)daddr; | |
1450 | const struct sockaddr_in *saddr4 = (const struct sockaddr_in *)saddr; | |
1451 | const struct sockaddr_in6 *daddr6 = (const struct sockaddr_in6 *)daddr; | |
1452 | const struct sockaddr_in6 *saddr6 = (const struct sockaddr_in6 *)saddr; | |
1453 | ||
1454 | switch (daddr->sa_family) { | |
1455 | case AF_INET: | |
1456 | return saddr->sa_family == AF_INET && | |
1457 | validate_ipv4_net_dev(net_dev, daddr4, saddr4); | |
1458 | ||
1459 | case AF_INET6: | |
1460 | return saddr->sa_family == AF_INET6 && | |
1461 | validate_ipv6_net_dev(net_dev, daddr6, saddr6); | |
1462 | ||
1463 | default: | |
1464 | return false; | |
1465 | } | |
1466 | } | |
1467 | ||
cee10433 PP |
1468 | static struct net_device * |
1469 | roce_get_net_dev_by_cm_event(const struct ib_cm_event *ib_event) | |
1470 | { | |
1471 | const struct ib_gid_attr *sgid_attr = NULL; | |
1472 | ||
1473 | if (ib_event->event == IB_CM_REQ_RECEIVED) | |
1474 | sgid_attr = ib_event->param.req_rcvd.ppath_sgid_attr; | |
1475 | else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) | |
1476 | sgid_attr = ib_event->param.sidr_req_rcvd.sgid_attr; | |
1477 | ||
1478 | if (!sgid_attr) | |
1479 | return NULL; | |
1480 | dev_hold(sgid_attr->ndev); | |
1481 | return sgid_attr->ndev; | |
1482 | } | |
1483 | ||
e7ff98ae | 1484 | static struct net_device *cma_get_net_dev(const struct ib_cm_event *ib_event, |
2918c1a9 | 1485 | struct cma_req_info *req) |
4c21b5bc | 1486 | { |
2918c1a9 PP |
1487 | struct sockaddr *listen_addr = |
1488 | (struct sockaddr *)&req->listen_addr_storage; | |
1489 | struct sockaddr *src_addr = (struct sockaddr *)&req->src_addr_storage; | |
4c21b5bc HE |
1490 | struct net_device *net_dev; |
1491 | const union ib_gid *gid = req->has_gid ? &req->local_gid : NULL; | |
1492 | int err; | |
1493 | ||
f887f2ac HE |
1494 | err = cma_save_ip_info(listen_addr, src_addr, ib_event, |
1495 | req->service_id); | |
4c21b5bc HE |
1496 | if (err) |
1497 | return ERR_PTR(err); | |
1498 | ||
cee10433 PP |
1499 | if (rdma_protocol_roce(req->device, req->port)) |
1500 | net_dev = roce_get_net_dev_by_cm_event(ib_event); | |
1501 | else | |
1502 | net_dev = ib_get_net_dev_by_params(req->device, req->port, | |
1503 | req->pkey, | |
1504 | gid, listen_addr); | |
4c21b5bc HE |
1505 | if (!net_dev) |
1506 | return ERR_PTR(-ENODEV); | |
1507 | ||
1508 | return net_dev; | |
1509 | } | |
1510 | ||
2253fc0c | 1511 | static enum rdma_ucm_port_space rdma_ps_from_service_id(__be64 service_id) |
4c21b5bc HE |
1512 | { |
1513 | return (be64_to_cpu(service_id) >> 16) & 0xffff; | |
1514 | } | |
1515 | ||
1516 | static bool cma_match_private_data(struct rdma_id_private *id_priv, | |
1517 | const struct cma_hdr *hdr) | |
1518 | { | |
1519 | struct sockaddr *addr = cma_src_addr(id_priv); | |
1520 | __be32 ip4_addr; | |
1521 | struct in6_addr ip6_addr; | |
1522 | ||
1523 | if (cma_any_addr(addr) && !id_priv->afonly) | |
1524 | return true; | |
1525 | ||
1526 | switch (addr->sa_family) { | |
1527 | case AF_INET: | |
1528 | ip4_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
1529 | if (cma_get_ip_ver(hdr) != 4) | |
1530 | return false; | |
1531 | if (!cma_any_addr(addr) && | |
1532 | hdr->dst_addr.ip4.addr != ip4_addr) | |
1533 | return false; | |
1534 | break; | |
1535 | case AF_INET6: | |
1536 | ip6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr; | |
1537 | if (cma_get_ip_ver(hdr) != 6) | |
1538 | return false; | |
1539 | if (!cma_any_addr(addr) && | |
1540 | memcmp(&hdr->dst_addr.ip6, &ip6_addr, sizeof(ip6_addr))) | |
1541 | return false; | |
1542 | break; | |
1543 | case AF_IB: | |
1544 | return true; | |
1545 | default: | |
1546 | return false; | |
1547 | } | |
1548 | ||
1549 | return true; | |
1550 | } | |
1551 | ||
b8cab5da HE |
1552 | static bool cma_protocol_roce(const struct rdma_cm_id *id) |
1553 | { | |
1554 | struct ib_device *device = id->device; | |
1555 | const int port_num = id->port_num ?: rdma_start_port(device); | |
1556 | ||
5ac08a34 | 1557 | return rdma_protocol_roce(device, port_num); |
b8cab5da HE |
1558 | } |
1559 | ||
78fb282b PP |
1560 | static bool cma_is_req_ipv6_ll(const struct cma_req_info *req) |
1561 | { | |
1562 | const struct sockaddr *daddr = | |
1563 | (const struct sockaddr *)&req->listen_addr_storage; | |
1564 | const struct sockaddr_in6 *daddr6 = (const struct sockaddr_in6 *)daddr; | |
1565 | ||
1566 | /* Returns true if the req is for IPv6 link local */ | |
1567 | return (daddr->sa_family == AF_INET6 && | |
1568 | (ipv6_addr_type(&daddr6->sin6_addr) & IPV6_ADDR_LINKLOCAL)); | |
1569 | } | |
1570 | ||
fac51590 MB |
1571 | static bool cma_match_net_dev(const struct rdma_cm_id *id, |
1572 | const struct net_device *net_dev, | |
78fb282b | 1573 | const struct cma_req_info *req) |
4c21b5bc | 1574 | { |
fac51590 | 1575 | const struct rdma_addr *addr = &id->route.addr; |
4c21b5bc HE |
1576 | |
1577 | if (!net_dev) | |
d274e45c | 1578 | /* This request is an AF_IB request */ |
78fb282b | 1579 | return (!id->port_num || id->port_num == req->port) && |
d274e45c | 1580 | (addr->src_addr.ss_family == AF_IB); |
4c21b5bc | 1581 | |
78fb282b PP |
1582 | /* |
1583 | * If the request is not for IPv6 link local, allow matching | |
1584 | * request to any netdevice of the one or multiport rdma device. | |
1585 | */ | |
1586 | if (!cma_is_req_ipv6_ll(req)) | |
1587 | return true; | |
643d213a PP |
1588 | /* |
1589 | * Net namespaces must match, and if the listner is listening | |
1590 | * on a specific netdevice than netdevice must match as well. | |
1591 | */ | |
1592 | if (net_eq(dev_net(net_dev), addr->dev_addr.net) && | |
1593 | (!!addr->dev_addr.bound_dev_if == | |
1594 | (addr->dev_addr.bound_dev_if == net_dev->ifindex))) | |
1595 | return true; | |
1596 | else | |
1597 | return false; | |
4c21b5bc HE |
1598 | } |
1599 | ||
1600 | static struct rdma_id_private *cma_find_listener( | |
1601 | const struct rdma_bind_list *bind_list, | |
1602 | const struct ib_cm_id *cm_id, | |
1603 | const struct ib_cm_event *ib_event, | |
1604 | const struct cma_req_info *req, | |
1605 | const struct net_device *net_dev) | |
1606 | { | |
1607 | struct rdma_id_private *id_priv, *id_priv_dev; | |
1608 | ||
1609 | if (!bind_list) | |
1610 | return ERR_PTR(-EINVAL); | |
1611 | ||
1612 | hlist_for_each_entry(id_priv, &bind_list->owners, node) { | |
1613 | if (cma_match_private_data(id_priv, ib_event->private_data)) { | |
1614 | if (id_priv->id.device == cm_id->device && | |
78fb282b | 1615 | cma_match_net_dev(&id_priv->id, net_dev, req)) |
4c21b5bc HE |
1616 | return id_priv; |
1617 | list_for_each_entry(id_priv_dev, | |
1618 | &id_priv->listen_list, | |
1619 | listen_list) { | |
1620 | if (id_priv_dev->id.device == cm_id->device && | |
78fb282b PP |
1621 | cma_match_net_dev(&id_priv_dev->id, |
1622 | net_dev, req)) | |
4c21b5bc HE |
1623 | return id_priv_dev; |
1624 | } | |
1625 | } | |
1626 | } | |
1627 | ||
1628 | return ERR_PTR(-EINVAL); | |
1629 | } | |
1630 | ||
e7ff98ae | 1631 | static struct rdma_id_private * |
85463316 PP |
1632 | cma_ib_id_from_event(struct ib_cm_id *cm_id, |
1633 | const struct ib_cm_event *ib_event, | |
41ab1cb7 | 1634 | struct cma_req_info *req, |
85463316 | 1635 | struct net_device **net_dev) |
4c21b5bc | 1636 | { |
4c21b5bc HE |
1637 | struct rdma_bind_list *bind_list; |
1638 | struct rdma_id_private *id_priv; | |
4c21b5bc HE |
1639 | int err; |
1640 | ||
41ab1cb7 | 1641 | err = cma_save_req_info(ib_event, req); |
4c21b5bc HE |
1642 | if (err) |
1643 | return ERR_PTR(err); | |
1644 | ||
41ab1cb7 | 1645 | *net_dev = cma_get_net_dev(ib_event, req); |
0b3ca768 HE |
1646 | if (IS_ERR(*net_dev)) { |
1647 | if (PTR_ERR(*net_dev) == -EAFNOSUPPORT) { | |
4c21b5bc | 1648 | /* Assuming the protocol is AF_IB */ |
0b3ca768 | 1649 | *net_dev = NULL; |
4c21b5bc | 1650 | } else { |
0b3ca768 | 1651 | return ERR_CAST(*net_dev); |
4c21b5bc HE |
1652 | } |
1653 | } | |
1654 | ||
2918c1a9 PP |
1655 | /* |
1656 | * Net namespace might be getting deleted while route lookup, | |
1657 | * cm_id lookup is in progress. Therefore, perform netdevice | |
1658 | * validation, cm_id lookup under rcu lock. | |
1659 | * RCU lock along with netdevice state check, synchronizes with | |
1660 | * netdevice migrating to different net namespace and also avoids | |
1661 | * case where net namespace doesn't get deleted while lookup is in | |
1662 | * progress. | |
1663 | * If the device state is not IFF_UP, its properties such as ifindex | |
1664 | * and nd_net cannot be trusted to remain valid without rcu lock. | |
1665 | * net/core/dev.c change_net_namespace() ensures to synchronize with | |
1666 | * ongoing operations on net device after device is closed using | |
1667 | * synchronize_net(). | |
1668 | */ | |
1669 | rcu_read_lock(); | |
1670 | if (*net_dev) { | |
1671 | /* | |
1672 | * If netdevice is down, it is likely that it is administratively | |
1673 | * down or it might be migrating to different namespace. | |
1674 | * In that case avoid further processing, as the net namespace | |
1675 | * or ifindex may change. | |
1676 | */ | |
1677 | if (((*net_dev)->flags & IFF_UP) == 0) { | |
1678 | id_priv = ERR_PTR(-EHOSTUNREACH); | |
1679 | goto err; | |
1680 | } | |
1681 | ||
1682 | if (!validate_net_dev(*net_dev, | |
41ab1cb7 PP |
1683 | (struct sockaddr *)&req->listen_addr_storage, |
1684 | (struct sockaddr *)&req->src_addr_storage)) { | |
2918c1a9 PP |
1685 | id_priv = ERR_PTR(-EHOSTUNREACH); |
1686 | goto err; | |
1687 | } | |
1688 | } | |
1689 | ||
fa20105e | 1690 | bind_list = cma_ps_find(*net_dev ? dev_net(*net_dev) : &init_net, |
41ab1cb7 PP |
1691 | rdma_ps_from_service_id(req->service_id), |
1692 | cma_port_from_service_id(req->service_id)); | |
1693 | id_priv = cma_find_listener(bind_list, cm_id, ib_event, req, *net_dev); | |
2918c1a9 PP |
1694 | err: |
1695 | rcu_read_unlock(); | |
b3b51f9f | 1696 | if (IS_ERR(id_priv) && *net_dev) { |
be688195 HE |
1697 | dev_put(*net_dev); |
1698 | *net_dev = NULL; | |
1699 | } | |
4c21b5bc HE |
1700 | return id_priv; |
1701 | } | |
1702 | ||
c0b64f58 | 1703 | static inline u8 cma_user_data_offset(struct rdma_id_private *id_priv) |
e51060f0 | 1704 | { |
e8160e15 | 1705 | return cma_family(id_priv) == AF_IB ? 0 : sizeof(struct cma_hdr); |
e51060f0 SH |
1706 | } |
1707 | ||
e51060f0 SH |
1708 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
1709 | { | |
fe53ba2f | 1710 | if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) { |
e51060f0 SH |
1711 | if (id_priv->query) |
1712 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
e51060f0 SH |
1713 | } |
1714 | } | |
1715 | ||
e51060f0 SH |
1716 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
1717 | { | |
1718 | struct rdma_id_private *dev_id_priv; | |
1719 | ||
d02d1f53 SH |
1720 | /* |
1721 | * Remove from listen_any_list to prevent added devices from spawning | |
1722 | * additional listen requests. | |
1723 | */ | |
e51060f0 SH |
1724 | mutex_lock(&lock); |
1725 | list_del(&id_priv->list); | |
1726 | ||
1727 | while (!list_empty(&id_priv->listen_list)) { | |
1728 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
1729 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
1730 | /* sync with device removal to avoid duplicate destruction */ |
1731 | list_del_init(&dev_id_priv->list); | |
1732 | list_del(&dev_id_priv->listen_list); | |
1733 | mutex_unlock(&lock); | |
1734 | ||
1735 | rdma_destroy_id(&dev_id_priv->id); | |
1736 | mutex_lock(&lock); | |
e51060f0 SH |
1737 | } |
1738 | mutex_unlock(&lock); | |
1739 | } | |
1740 | ||
1741 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 1742 | enum rdma_cm_state state) |
e51060f0 SH |
1743 | { |
1744 | switch (state) { | |
550e5ca7 | 1745 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
1746 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
1747 | break; | |
550e5ca7 | 1748 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
1749 | cma_cancel_route(id_priv); |
1750 | break; | |
550e5ca7 | 1751 | case RDMA_CM_LISTEN: |
f4753834 | 1752 | if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) |
e51060f0 SH |
1753 | cma_cancel_listens(id_priv); |
1754 | break; | |
1755 | default: | |
1756 | break; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | static void cma_release_port(struct rdma_id_private *id_priv) | |
1761 | { | |
1762 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
fa20105e | 1763 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
1764 | |
1765 | if (!bind_list) | |
1766 | return; | |
1767 | ||
1768 | mutex_lock(&lock); | |
1769 | hlist_del(&id_priv->node); | |
1770 | if (hlist_empty(&bind_list->owners)) { | |
fa20105e | 1771 | cma_ps_remove(net, bind_list->ps, bind_list->port); |
e51060f0 SH |
1772 | kfree(bind_list); |
1773 | } | |
1774 | mutex_unlock(&lock); | |
1775 | } | |
1776 | ||
88145678 PP |
1777 | static void cma_leave_roce_mc_group(struct rdma_id_private *id_priv, |
1778 | struct cma_multicast *mc) | |
1779 | { | |
c0126915 JG |
1780 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
1781 | struct net_device *ndev = NULL; | |
1782 | ||
1783 | if (dev_addr->bound_dev_if) | |
1784 | ndev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if); | |
1785 | if (ndev) { | |
1786 | cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid, false); | |
1787 | dev_put(ndev); | |
88145678 PP |
1788 | } |
1789 | kref_put(&mc->mcref, release_mc); | |
1790 | } | |
1791 | ||
c8f6a362 SH |
1792 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
1793 | { | |
1794 | struct cma_multicast *mc; | |
1795 | ||
1796 | while (!list_empty(&id_priv->mc_list)) { | |
1797 | mc = container_of(id_priv->mc_list.next, | |
1798 | struct cma_multicast, list); | |
1799 | list_del(&mc->list); | |
a31ad3b0 | 1800 | if (rdma_cap_ib_mcast(id_priv->cma_dev->device, |
5c9a5282 | 1801 | id_priv->id.port_num)) { |
3c86aa70 EC |
1802 | ib_sa_free_multicast(mc->multicast.ib); |
1803 | kfree(mc); | |
bee3c3c9 | 1804 | } else { |
88145678 | 1805 | cma_leave_roce_mc_group(id_priv, mc); |
bee3c3c9 | 1806 | } |
c8f6a362 SH |
1807 | } |
1808 | } | |
1809 | ||
e51060f0 SH |
1810 | void rdma_destroy_id(struct rdma_cm_id *id) |
1811 | { | |
1812 | struct rdma_id_private *id_priv; | |
550e5ca7 | 1813 | enum rdma_cm_state state; |
e51060f0 SH |
1814 | |
1815 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1816 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1817 | cma_cancel_operation(id_priv, state); |
1818 | ||
a396d43a SH |
1819 | /* |
1820 | * Wait for any active callback to finish. New callbacks will find | |
1821 | * the id_priv state set to destroying and abort. | |
1822 | */ | |
1823 | mutex_lock(&id_priv->handler_mutex); | |
1824 | mutex_unlock(&id_priv->handler_mutex); | |
1825 | ||
ed7a01fd | 1826 | rdma_restrack_del(&id_priv->res); |
e51060f0 | 1827 | if (id_priv->cma_dev) { |
72219cea | 1828 | if (rdma_cap_ib_cm(id_priv->id.device, 1)) { |
0c9361fc | 1829 | if (id_priv->cm_id.ib) |
e51060f0 | 1830 | ib_destroy_cm_id(id_priv->cm_id.ib); |
04215330 | 1831 | } else if (rdma_cap_iw_cm(id_priv->id.device, 1)) { |
0c9361fc | 1832 | if (id_priv->cm_id.iw) |
07ebafba | 1833 | iw_destroy_cm_id(id_priv->cm_id.iw); |
e51060f0 | 1834 | } |
c8f6a362 | 1835 | cma_leave_mc_groups(id_priv); |
a396d43a | 1836 | cma_release_dev(id_priv); |
e51060f0 SH |
1837 | } |
1838 | ||
1839 | cma_release_port(id_priv); | |
1840 | cma_deref_id(id_priv); | |
1841 | wait_for_completion(&id_priv->comp); | |
1842 | ||
d02d1f53 SH |
1843 | if (id_priv->internal_id) |
1844 | cma_deref_id(id_priv->id.context); | |
1845 | ||
e51060f0 | 1846 | kfree(id_priv->id.route.path_rec); |
4ed13a5f PP |
1847 | |
1848 | if (id_priv->id.route.addr.dev_addr.sgid_attr) | |
1849 | rdma_put_gid_attr(id_priv->id.route.addr.dev_addr.sgid_attr); | |
1850 | ||
fa20105e | 1851 | put_net(id_priv->id.route.addr.dev_addr.net); |
e51060f0 SH |
1852 | kfree(id_priv); |
1853 | } | |
1854 | EXPORT_SYMBOL(rdma_destroy_id); | |
1855 | ||
1856 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
1857 | { | |
1858 | int ret; | |
1859 | ||
5851bb89 | 1860 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
1861 | if (ret) |
1862 | goto reject; | |
1863 | ||
5851bb89 | 1864 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
1865 | if (ret) |
1866 | goto reject; | |
1867 | ||
1868 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
1869 | if (ret) | |
1870 | goto reject; | |
1871 | ||
1872 | return 0; | |
1873 | reject: | |
498683c6 | 1874 | pr_debug_ratelimited("RDMA CM: CONNECT_ERROR: failed to handle reply. status %d\n", ret); |
c5483388 | 1875 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
1876 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
1877 | NULL, 0, NULL, 0); | |
1878 | return ret; | |
1879 | } | |
1880 | ||
a1b1b61f | 1881 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
e7ff98ae | 1882 | const struct ib_cm_rep_event_param *rep_data, |
a1b1b61f SH |
1883 | void *private_data) |
1884 | { | |
1885 | event->param.conn.private_data = private_data; | |
1886 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
1887 | event->param.conn.responder_resources = rep_data->responder_resources; | |
1888 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
1889 | event->param.conn.flow_control = rep_data->flow_control; | |
1890 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
1891 | event->param.conn.srq = rep_data->srq; | |
1892 | event->param.conn.qp_num = rep_data->remote_qpn; | |
1893 | } | |
1894 | ||
e7ff98ae PP |
1895 | static int cma_ib_handler(struct ib_cm_id *cm_id, |
1896 | const struct ib_cm_event *ib_event) | |
e51060f0 SH |
1897 | { |
1898 | struct rdma_id_private *id_priv = cm_id->context; | |
7582df82 | 1899 | struct rdma_cm_event event = {}; |
a1b1b61f | 1900 | int ret = 0; |
e51060f0 | 1901 | |
37e07cda | 1902 | mutex_lock(&id_priv->handler_mutex); |
38ca83a5 | 1903 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
37e07cda | 1904 | id_priv->state != RDMA_CM_CONNECT) || |
38ca83a5 | 1905 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
37e07cda BVA |
1906 | id_priv->state != RDMA_CM_DISCONNECT)) |
1907 | goto out; | |
e51060f0 SH |
1908 | |
1909 | switch (ib_event->event) { | |
1910 | case IB_CM_REQ_ERROR: | |
1911 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1912 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1913 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1914 | break; |
1915 | case IB_CM_REP_RECEIVED: | |
61c0ddbe MS |
1916 | if (cma_comp(id_priv, RDMA_CM_CONNECT) && |
1917 | (id_priv->id.qp_type != IB_QPT_UD)) | |
1918 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); | |
01602f11 | 1919 | if (id_priv->id.qp) { |
a1b1b61f SH |
1920 | event.status = cma_rep_recv(id_priv); |
1921 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1922 | RDMA_CM_EVENT_ESTABLISHED; | |
01602f11 | 1923 | } else { |
a1b1b61f | 1924 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
01602f11 | 1925 | } |
a1b1b61f SH |
1926 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, |
1927 | ib_event->private_data); | |
e51060f0 SH |
1928 | break; |
1929 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1930 | case IB_CM_USER_ESTABLISHED: |
1931 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1932 | break; |
1933 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1934 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1935 | case IB_CM_DREQ_RECEIVED: |
1936 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1937 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1938 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1939 | goto out; |
a1b1b61f | 1940 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1941 | break; |
1942 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1943 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1944 | break; | |
e51060f0 SH |
1945 | case IB_CM_MRA_RECEIVED: |
1946 | /* ignore event */ | |
1947 | goto out; | |
1948 | case IB_CM_REJ_RECEIVED: | |
498683c6 MS |
1949 | pr_debug_ratelimited("RDMA CM: REJECTED: %s\n", rdma_reject_msg(&id_priv->id, |
1950 | ib_event->param.rej_rcvd.reason)); | |
c5483388 | 1951 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1952 | event.status = ib_event->param.rej_rcvd.reason; |
1953 | event.event = RDMA_CM_EVENT_REJECTED; | |
1954 | event.param.conn.private_data = ib_event->private_data; | |
1955 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1956 | break; |
1957 | default: | |
aba25a3e | 1958 | pr_err("RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1959 | ib_event->event); |
1960 | goto out; | |
1961 | } | |
1962 | ||
a1b1b61f | 1963 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1964 | if (ret) { |
1965 | /* Destroy the CM ID by returning a non-zero value. */ | |
1966 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1967 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1968 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1969 | rdma_destroy_id(&id_priv->id); |
1970 | return ret; | |
1971 | } | |
1972 | out: | |
de910bd9 | 1973 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1974 | return ret; |
1975 | } | |
1976 | ||
e7ff98ae | 1977 | static struct rdma_id_private * |
85463316 PP |
1978 | cma_ib_new_conn_id(const struct rdma_cm_id *listen_id, |
1979 | const struct ib_cm_event *ib_event, | |
1980 | struct net_device *net_dev) | |
e51060f0 | 1981 | { |
00313983 | 1982 | struct rdma_id_private *listen_id_priv; |
e51060f0 SH |
1983 | struct rdma_id_private *id_priv; |
1984 | struct rdma_cm_id *id; | |
1985 | struct rdma_route *rt; | |
0c505f70 | 1986 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
9fdca4da | 1987 | struct sa_path_rec *path = ib_event->param.req_rcvd.primary_path; |
d3957b86 MD |
1988 | const __be64 service_id = |
1989 | ib_event->param.req_rcvd.primary_path->service_id; | |
64c5e613 | 1990 | int ret; |
e51060f0 | 1991 | |
00313983 SW |
1992 | listen_id_priv = container_of(listen_id, struct rdma_id_private, id); |
1993 | id = __rdma_create_id(listen_id->route.addr.dev_addr.net, | |
fa20105e | 1994 | listen_id->event_handler, listen_id->context, |
00313983 SW |
1995 | listen_id->ps, ib_event->param.req_rcvd.qp_type, |
1996 | listen_id_priv->res.kern_name); | |
e51060f0 | 1997 | if (IS_ERR(id)) |
0c9361fc | 1998 | return NULL; |
3f168d2b | 1999 | |
f4753834 | 2000 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
2001 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
2002 | (struct sockaddr *)&id->route.addr.dst_addr, | |
2003 | listen_id, ib_event, ss_family, service_id)) | |
fbaa1a6d | 2004 | goto err; |
e51060f0 SH |
2005 | |
2006 | rt = &id->route; | |
2007 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
6da2ec56 KC |
2008 | rt->path_rec = kmalloc_array(rt->num_paths, sizeof(*rt->path_rec), |
2009 | GFP_KERNEL); | |
e51060f0 | 2010 | if (!rt->path_rec) |
0c9361fc | 2011 | goto err; |
e51060f0 | 2012 | |
9fdca4da | 2013 | rt->path_rec[0] = *path; |
e51060f0 SH |
2014 | if (rt->num_paths == 2) |
2015 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
2016 | ||
0b3ca768 | 2017 | if (net_dev) { |
77addc52 | 2018 | rdma_copy_src_l2_addr(&rt->addr.dev_addr, net_dev); |
0b3ca768 | 2019 | } else { |
b8cab5da HE |
2020 | if (!cma_protocol_roce(listen_id) && |
2021 | cma_any_addr(cma_src_addr(id_priv))) { | |
2022 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; | |
2023 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
2024 | ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); | |
2025 | } else if (!cma_any_addr(cma_src_addr(id_priv))) { | |
2026 | ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr); | |
2027 | if (ret) | |
2028 | goto err; | |
2029 | } | |
6f8372b6 SH |
2030 | } |
2031 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 | 2032 | |
550e5ca7 | 2033 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 2034 | return id_priv; |
3f168d2b | 2035 | |
3f168d2b | 2036 | err: |
0c9361fc | 2037 | rdma_destroy_id(id); |
e51060f0 SH |
2038 | return NULL; |
2039 | } | |
2040 | ||
e7ff98ae | 2041 | static struct rdma_id_private * |
85463316 PP |
2042 | cma_ib_new_udp_id(const struct rdma_cm_id *listen_id, |
2043 | const struct ib_cm_event *ib_event, | |
2044 | struct net_device *net_dev) | |
628e5f6d | 2045 | { |
e7ff98ae | 2046 | const struct rdma_id_private *listen_id_priv; |
628e5f6d SH |
2047 | struct rdma_id_private *id_priv; |
2048 | struct rdma_cm_id *id; | |
0c505f70 | 2049 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
fa20105e | 2050 | struct net *net = listen_id->route.addr.dev_addr.net; |
628e5f6d SH |
2051 | int ret; |
2052 | ||
00313983 SW |
2053 | listen_id_priv = container_of(listen_id, struct rdma_id_private, id); |
2054 | id = __rdma_create_id(net, listen_id->event_handler, listen_id->context, | |
2055 | listen_id->ps, IB_QPT_UD, | |
2056 | listen_id_priv->res.kern_name); | |
628e5f6d SH |
2057 | if (IS_ERR(id)) |
2058 | return NULL; | |
2059 | ||
f4753834 | 2060 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
2061 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
2062 | (struct sockaddr *)&id->route.addr.dst_addr, | |
2063 | listen_id, ib_event, ss_family, | |
2064 | ib_event->param.sidr_req_rcvd.service_id)) | |
628e5f6d SH |
2065 | goto err; |
2066 | ||
0b3ca768 | 2067 | if (net_dev) { |
77addc52 | 2068 | rdma_copy_src_l2_addr(&id->route.addr.dev_addr, net_dev); |
0b3ca768 | 2069 | } else { |
b8cab5da HE |
2070 | if (!cma_any_addr(cma_src_addr(id_priv))) { |
2071 | ret = cma_translate_addr(cma_src_addr(id_priv), | |
2072 | &id->route.addr.dev_addr); | |
2073 | if (ret) | |
2074 | goto err; | |
2075 | } | |
6f8372b6 | 2076 | } |
628e5f6d | 2077 | |
550e5ca7 | 2078 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
2079 | return id_priv; |
2080 | err: | |
2081 | rdma_destroy_id(id); | |
2082 | return NULL; | |
2083 | } | |
2084 | ||
a1b1b61f | 2085 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
e7ff98ae | 2086 | const struct ib_cm_req_event_param *req_data, |
a1b1b61f SH |
2087 | void *private_data, int offset) |
2088 | { | |
2089 | event->param.conn.private_data = private_data + offset; | |
2090 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
2091 | event->param.conn.responder_resources = req_data->responder_resources; | |
2092 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
2093 | event->param.conn.flow_control = req_data->flow_control; | |
2094 | event->param.conn.retry_count = req_data->retry_count; | |
2095 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
2096 | event->param.conn.srq = req_data->srq; | |
2097 | event->param.conn.qp_num = req_data->remote_qpn; | |
2098 | } | |
2099 | ||
85463316 PP |
2100 | static int cma_ib_check_req_qp_type(const struct rdma_cm_id *id, |
2101 | const struct ib_cm_event *ib_event) | |
9595480c | 2102 | { |
4dd81e89 | 2103 | return (((ib_event->event == IB_CM_REQ_RECEIVED) && |
9595480c HS |
2104 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || |
2105 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
2106 | (id->qp_type == IB_QPT_UD)) || | |
2107 | (!id->qp_type)); | |
2108 | } | |
2109 | ||
85463316 PP |
2110 | static int cma_ib_req_handler(struct ib_cm_id *cm_id, |
2111 | const struct ib_cm_event *ib_event) | |
e51060f0 | 2112 | { |
37e07cda | 2113 | struct rdma_id_private *listen_id, *conn_id = NULL; |
7582df82 | 2114 | struct rdma_cm_event event = {}; |
41ab1cb7 | 2115 | struct cma_req_info req = {}; |
0b3ca768 | 2116 | struct net_device *net_dev; |
c0b64f58 BVA |
2117 | u8 offset; |
2118 | int ret; | |
e51060f0 | 2119 | |
41ab1cb7 | 2120 | listen_id = cma_ib_id_from_event(cm_id, ib_event, &req, &net_dev); |
4c21b5bc HE |
2121 | if (IS_ERR(listen_id)) |
2122 | return PTR_ERR(listen_id); | |
2123 | ||
85463316 | 2124 | if (!cma_ib_check_req_qp_type(&listen_id->id, ib_event)) { |
0b3ca768 HE |
2125 | ret = -EINVAL; |
2126 | goto net_dev_put; | |
2127 | } | |
9595480c | 2128 | |
37e07cda BVA |
2129 | mutex_lock(&listen_id->handler_mutex); |
2130 | if (listen_id->state != RDMA_CM_LISTEN) { | |
0b3ca768 | 2131 | ret = -ECONNABORTED; |
37e07cda | 2132 | goto err1; |
0b3ca768 | 2133 | } |
e51060f0 | 2134 | |
e8160e15 | 2135 | offset = cma_user_data_offset(listen_id); |
628e5f6d | 2136 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; |
9595480c | 2137 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
85463316 | 2138 | conn_id = cma_ib_new_udp_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
2139 | event.param.ud.private_data = ib_event->private_data + offset; |
2140 | event.param.ud.private_data_len = | |
2141 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
2142 | } else { | |
85463316 | 2143 | conn_id = cma_ib_new_conn_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
2144 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, |
2145 | ib_event->private_data, offset); | |
2146 | } | |
e51060f0 SH |
2147 | if (!conn_id) { |
2148 | ret = -ENOMEM; | |
b6cec8aa | 2149 | goto err1; |
e51060f0 SH |
2150 | } |
2151 | ||
de910bd9 | 2152 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
41ab1cb7 | 2153 | ret = cma_ib_acquire_dev(conn_id, listen_id, &req); |
a1a733f6 | 2154 | if (ret) |
b6cec8aa | 2155 | goto err2; |
e51060f0 SH |
2156 | |
2157 | conn_id->cm_id.ib = cm_id; | |
2158 | cm_id->context = conn_id; | |
2159 | cm_id->cm_handler = cma_ib_handler; | |
2160 | ||
25ae21a1 SH |
2161 | /* |
2162 | * Protect against the user destroying conn_id from another thread | |
2163 | * until we're done accessing it. | |
2164 | */ | |
2165 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 2166 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
b6cec8aa SH |
2167 | if (ret) |
2168 | goto err3; | |
b6cec8aa SH |
2169 | /* |
2170 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
2171 | * while we're accessing the cm_id. | |
2172 | */ | |
2173 | mutex_lock(&lock); | |
dd5f03be MB |
2174 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && |
2175 | (conn_id->id.qp_type != IB_QPT_UD)) | |
b6cec8aa SH |
2176 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); |
2177 | mutex_unlock(&lock); | |
2178 | mutex_unlock(&conn_id->handler_mutex); | |
2179 | mutex_unlock(&listen_id->handler_mutex); | |
25ae21a1 | 2180 | cma_deref_id(conn_id); |
0b3ca768 HE |
2181 | if (net_dev) |
2182 | dev_put(net_dev); | |
b6cec8aa | 2183 | return 0; |
a1a733f6 | 2184 | |
b6cec8aa SH |
2185 | err3: |
2186 | cma_deref_id(conn_id); | |
a1a733f6 KK |
2187 | /* Destroy the CM ID by returning a non-zero value. */ |
2188 | conn_id->cm_id.ib = NULL; | |
b6cec8aa | 2189 | err2: |
550e5ca7 | 2190 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 2191 | mutex_unlock(&conn_id->handler_mutex); |
b6cec8aa | 2192 | err1: |
de910bd9 | 2193 | mutex_unlock(&listen_id->handler_mutex); |
b6cec8aa SH |
2194 | if (conn_id) |
2195 | rdma_destroy_id(&conn_id->id); | |
0b3ca768 HE |
2196 | |
2197 | net_dev_put: | |
2198 | if (net_dev) | |
2199 | dev_put(net_dev); | |
2200 | ||
e51060f0 SH |
2201 | return ret; |
2202 | } | |
2203 | ||
cf53936f | 2204 | __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr) |
e51060f0 | 2205 | { |
496ce3ce SH |
2206 | if (addr->sa_family == AF_IB) |
2207 | return ((struct sockaddr_ib *) addr)->sib_sid; | |
2208 | ||
cf53936f | 2209 | return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 | 2210 | } |
cf53936f | 2211 | EXPORT_SYMBOL(rdma_get_service_id); |
e51060f0 | 2212 | |
411460ac PP |
2213 | void rdma_read_gids(struct rdma_cm_id *cm_id, union ib_gid *sgid, |
2214 | union ib_gid *dgid) | |
2215 | { | |
2216 | struct rdma_addr *addr = &cm_id->route.addr; | |
2217 | ||
2218 | if (!cm_id->device) { | |
2219 | if (sgid) | |
2220 | memset(sgid, 0, sizeof(*sgid)); | |
2221 | if (dgid) | |
2222 | memset(dgid, 0, sizeof(*dgid)); | |
2223 | return; | |
2224 | } | |
2225 | ||
2226 | if (rdma_protocol_roce(cm_id->device, cm_id->port_num)) { | |
2227 | if (sgid) | |
2228 | rdma_ip2gid((struct sockaddr *)&addr->src_addr, sgid); | |
2229 | if (dgid) | |
2230 | rdma_ip2gid((struct sockaddr *)&addr->dst_addr, dgid); | |
2231 | } else { | |
2232 | if (sgid) | |
2233 | rdma_addr_get_sgid(&addr->dev_addr, sgid); | |
2234 | if (dgid) | |
2235 | rdma_addr_get_dgid(&addr->dev_addr, dgid); | |
2236 | } | |
2237 | } | |
2238 | EXPORT_SYMBOL(rdma_read_gids); | |
2239 | ||
07ebafba TT |
2240 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
2241 | { | |
2242 | struct rdma_id_private *id_priv = iw_id->context; | |
7582df82 | 2243 | struct rdma_cm_event event = {}; |
07ebafba | 2244 | int ret = 0; |
24d44a39 SW |
2245 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
2246 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba | 2247 | |
37e07cda BVA |
2248 | mutex_lock(&id_priv->handler_mutex); |
2249 | if (id_priv->state != RDMA_CM_CONNECT) | |
2250 | goto out; | |
07ebafba TT |
2251 | |
2252 | switch (iw_event->event) { | |
2253 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 2254 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
2255 | break; |
2256 | case IW_CM_EVENT_CONNECT_REPLY: | |
24d44a39 SW |
2257 | memcpy(cma_src_addr(id_priv), laddr, |
2258 | rdma_addr_size(laddr)); | |
2259 | memcpy(cma_dst_addr(id_priv), raddr, | |
2260 | rdma_addr_size(raddr)); | |
881a045f SW |
2261 | switch (iw_event->status) { |
2262 | case 0: | |
a1b1b61f | 2263 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
2264 | event.param.conn.initiator_depth = iw_event->ird; |
2265 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
2266 | break; |
2267 | case -ECONNRESET: | |
2268 | case -ECONNREFUSED: | |
2269 | event.event = RDMA_CM_EVENT_REJECTED; | |
2270 | break; | |
2271 | case -ETIMEDOUT: | |
2272 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2273 | break; | |
2274 | default: | |
2275 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
2276 | break; | |
2277 | } | |
07ebafba TT |
2278 | break; |
2279 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 2280 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
2281 | event.param.conn.initiator_depth = iw_event->ird; |
2282 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
2283 | break; |
2284 | default: | |
671a6cc2 | 2285 | goto out; |
07ebafba TT |
2286 | } |
2287 | ||
a1b1b61f SH |
2288 | event.status = iw_event->status; |
2289 | event.param.conn.private_data = iw_event->private_data; | |
2290 | event.param.conn.private_data_len = iw_event->private_data_len; | |
2291 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
2292 | if (ret) { |
2293 | /* Destroy the CM ID by returning a non-zero value. */ | |
2294 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 2295 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2296 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
2297 | rdma_destroy_id(&id_priv->id); |
2298 | return ret; | |
2299 | } | |
2300 | ||
37e07cda | 2301 | out: |
de910bd9 | 2302 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
2303 | return ret; |
2304 | } | |
2305 | ||
2306 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
2307 | struct iw_cm_event *iw_event) | |
2308 | { | |
2309 | struct rdma_cm_id *new_cm_id; | |
2310 | struct rdma_id_private *listen_id, *conn_id; | |
7582df82 | 2311 | struct rdma_cm_event event = {}; |
37e07cda | 2312 | int ret = -ECONNABORTED; |
24d44a39 SW |
2313 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
2314 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba | 2315 | |
7582df82 PP |
2316 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; |
2317 | event.param.conn.private_data = iw_event->private_data; | |
2318 | event.param.conn.private_data_len = iw_event->private_data_len; | |
2319 | event.param.conn.initiator_depth = iw_event->ird; | |
2320 | event.param.conn.responder_resources = iw_event->ord; | |
2321 | ||
07ebafba | 2322 | listen_id = cm_id->context; |
37e07cda BVA |
2323 | |
2324 | mutex_lock(&listen_id->handler_mutex); | |
2325 | if (listen_id->state != RDMA_CM_LISTEN) | |
2326 | goto out; | |
07ebafba TT |
2327 | |
2328 | /* Create a new RDMA id for the new IW CM ID */ | |
00313983 SW |
2329 | new_cm_id = __rdma_create_id(listen_id->id.route.addr.dev_addr.net, |
2330 | listen_id->id.event_handler, | |
2331 | listen_id->id.context, | |
2332 | RDMA_PS_TCP, IB_QPT_RC, | |
2333 | listen_id->res.kern_name); | |
10f32065 | 2334 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
2335 | ret = -ENOMEM; |
2336 | goto out; | |
2337 | } | |
2338 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 2339 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 2340 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 2341 | |
575c7e58 | 2342 | ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr); |
07ebafba | 2343 | if (ret) { |
de910bd9 | 2344 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
2345 | rdma_destroy_id(new_cm_id); |
2346 | goto out; | |
2347 | } | |
2348 | ||
41ab1cb7 | 2349 | ret = cma_iw_acquire_dev(conn_id, listen_id); |
07ebafba | 2350 | if (ret) { |
de910bd9 | 2351 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
2352 | rdma_destroy_id(new_cm_id); |
2353 | goto out; | |
2354 | } | |
2355 | ||
2356 | conn_id->cm_id.iw = cm_id; | |
2357 | cm_id->context = conn_id; | |
2358 | cm_id->cm_handler = cma_iw_handler; | |
2359 | ||
24d44a39 SW |
2360 | memcpy(cma_src_addr(conn_id), laddr, rdma_addr_size(laddr)); |
2361 | memcpy(cma_dst_addr(conn_id), raddr, rdma_addr_size(raddr)); | |
07ebafba | 2362 | |
25ae21a1 SH |
2363 | /* |
2364 | * Protect against the user destroying conn_id from another thread | |
2365 | * until we're done accessing it. | |
2366 | */ | |
2367 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 2368 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
2369 | if (ret) { |
2370 | /* User wants to destroy the CM ID */ | |
2371 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 2372 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 2373 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 2374 | cma_deref_id(conn_id); |
07ebafba | 2375 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 2376 | goto out; |
07ebafba TT |
2377 | } |
2378 | ||
de910bd9 | 2379 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 2380 | cma_deref_id(conn_id); |
de910bd9 | 2381 | |
07ebafba | 2382 | out: |
de910bd9 | 2383 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
2384 | return ret; |
2385 | } | |
2386 | ||
e51060f0 SH |
2387 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
2388 | { | |
e51060f0 | 2389 | struct sockaddr *addr; |
0c9361fc | 2390 | struct ib_cm_id *id; |
e51060f0 | 2391 | __be64 svc_id; |
e51060f0 | 2392 | |
51efe394 HE |
2393 | addr = cma_src_addr(id_priv); |
2394 | svc_id = rdma_get_service_id(&id_priv->id, addr); | |
85463316 PP |
2395 | id = ib_cm_insert_listen(id_priv->id.device, |
2396 | cma_ib_req_handler, svc_id); | |
0c9361fc JM |
2397 | if (IS_ERR(id)) |
2398 | return PTR_ERR(id); | |
0c9361fc | 2399 | id_priv->cm_id.ib = id; |
e51060f0 | 2400 | |
51efe394 | 2401 | return 0; |
e51060f0 SH |
2402 | } |
2403 | ||
07ebafba TT |
2404 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
2405 | { | |
2406 | int ret; | |
0c9361fc JM |
2407 | struct iw_cm_id *id; |
2408 | ||
2409 | id = iw_create_cm_id(id_priv->id.device, | |
2410 | iw_conn_req_handler, | |
2411 | id_priv); | |
2412 | if (IS_ERR(id)) | |
2413 | return PTR_ERR(id); | |
07ebafba | 2414 | |
68cdba06 | 2415 | id->tos = id_priv->tos; |
926ba19b | 2416 | id->tos_set = id_priv->tos_set; |
0c9361fc | 2417 | id_priv->cm_id.iw = id; |
07ebafba | 2418 | |
24d44a39 SW |
2419 | memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv), |
2420 | rdma_addr_size(cma_src_addr(id_priv))); | |
07ebafba TT |
2421 | |
2422 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
2423 | ||
2424 | if (ret) { | |
2425 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
2426 | id_priv->cm_id.iw = NULL; | |
2427 | } | |
2428 | ||
2429 | return ret; | |
2430 | } | |
2431 | ||
e51060f0 SH |
2432 | static int cma_listen_handler(struct rdma_cm_id *id, |
2433 | struct rdma_cm_event *event) | |
2434 | { | |
2435 | struct rdma_id_private *id_priv = id->context; | |
2436 | ||
2437 | id->context = id_priv->id.context; | |
2438 | id->event_handler = id_priv->id.event_handler; | |
2439 | return id_priv->id.event_handler(id, event); | |
2440 | } | |
2441 | ||
2442 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
2443 | struct cma_device *cma_dev) | |
2444 | { | |
2445 | struct rdma_id_private *dev_id_priv; | |
2446 | struct rdma_cm_id *id; | |
fa20105e | 2447 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
2448 | int ret; |
2449 | ||
72219cea | 2450 | if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1)) |
94d0c939 SH |
2451 | return; |
2452 | ||
00313983 SW |
2453 | id = __rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps, |
2454 | id_priv->id.qp_type, id_priv->res.kern_name); | |
e51060f0 SH |
2455 | if (IS_ERR(id)) |
2456 | return; | |
2457 | ||
2458 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
2459 | ||
550e5ca7 | 2460 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
f4753834 SH |
2461 | memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv), |
2462 | rdma_addr_size(cma_src_addr(id_priv))); | |
e51060f0 | 2463 | |
045959db | 2464 | _cma_attach_to_dev(dev_id_priv, cma_dev); |
e51060f0 | 2465 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); |
d02d1f53 SH |
2466 | atomic_inc(&id_priv->refcount); |
2467 | dev_id_priv->internal_id = 1; | |
5b0ec991 | 2468 | dev_id_priv->afonly = id_priv->afonly; |
9491128f SW |
2469 | dev_id_priv->tos_set = id_priv->tos_set; |
2470 | dev_id_priv->tos = id_priv->tos; | |
e51060f0 SH |
2471 | |
2472 | ret = rdma_listen(id, id_priv->backlog); | |
2473 | if (ret) | |
43c7c851 JG |
2474 | dev_warn(&cma_dev->device->dev, |
2475 | "RDMA CMA: cma_listen_on_dev, error %d\n", ret); | |
e51060f0 SH |
2476 | } |
2477 | ||
2478 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
2479 | { | |
2480 | struct cma_device *cma_dev; | |
2481 | ||
2482 | mutex_lock(&lock); | |
2483 | list_add_tail(&id_priv->list, &listen_any_list); | |
2484 | list_for_each_entry(cma_dev, &dev_list, list) | |
2485 | cma_listen_on_dev(id_priv, cma_dev); | |
2486 | mutex_unlock(&lock); | |
2487 | } | |
2488 | ||
a81c994d SH |
2489 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
2490 | { | |
2491 | struct rdma_id_private *id_priv; | |
2492 | ||
2493 | id_priv = container_of(id, struct rdma_id_private, id); | |
2494 | id_priv->tos = (u8) tos; | |
89052d78 | 2495 | id_priv->tos_set = true; |
a81c994d SH |
2496 | } |
2497 | EXPORT_SYMBOL(rdma_set_service_type); | |
2498 | ||
2c1619ed DG |
2499 | /** |
2500 | * rdma_set_ack_timeout() - Set the ack timeout of QP associated | |
2501 | * with a connection identifier. | |
2502 | * @id: Communication identifier to associated with service type. | |
2503 | * @timeout: Ack timeout to set a QP, expressed as 4.096 * 2^(timeout) usec. | |
2504 | * | |
2505 | * This function should be called before rdma_connect() on active side, | |
2506 | * and on passive side before rdma_accept(). It is applicable to primary | |
2507 | * path only. The timeout will affect the local side of the QP, it is not | |
2508 | * negotiated with remote side and zero disables the timer. | |
2509 | * | |
2510 | * Return: 0 for success | |
2511 | */ | |
2512 | int rdma_set_ack_timeout(struct rdma_cm_id *id, u8 timeout) | |
2513 | { | |
2514 | struct rdma_id_private *id_priv; | |
2515 | ||
2516 | if (id->qp_type != IB_QPT_RC) | |
2517 | return -EINVAL; | |
2518 | ||
2519 | id_priv = container_of(id, struct rdma_id_private, id); | |
2520 | id_priv->timeout = timeout; | |
2521 | id_priv->timeout_set = true; | |
2522 | ||
2523 | return 0; | |
2524 | } | |
2525 | EXPORT_SYMBOL(rdma_set_ack_timeout); | |
2526 | ||
c2f8fc4e | 2527 | static void cma_query_handler(int status, struct sa_path_rec *path_rec, |
e51060f0 SH |
2528 | void *context) |
2529 | { | |
2530 | struct cma_work *work = context; | |
2531 | struct rdma_route *route; | |
2532 | ||
2533 | route = &work->id->id.route; | |
2534 | ||
2535 | if (!status) { | |
2536 | route->num_paths = 1; | |
2537 | *route->path_rec = *path_rec; | |
2538 | } else { | |
550e5ca7 NM |
2539 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2540 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 2541 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 2542 | work->event.status = status; |
498683c6 MS |
2543 | pr_debug_ratelimited("RDMA CM: ROUTE_ERROR: failed to query path. status %d\n", |
2544 | status); | |
e51060f0 SH |
2545 | } |
2546 | ||
2547 | queue_work(cma_wq, &work->work); | |
2548 | } | |
2549 | ||
dbace111 LR |
2550 | static int cma_query_ib_route(struct rdma_id_private *id_priv, |
2551 | unsigned long timeout_ms, struct cma_work *work) | |
e51060f0 | 2552 | { |
f4753834 | 2553 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
c2f8fc4e | 2554 | struct sa_path_rec path_rec; |
a81c994d SH |
2555 | ib_sa_comp_mask comp_mask; |
2556 | struct sockaddr_in6 *sin6; | |
f68194ca | 2557 | struct sockaddr_ib *sib; |
e51060f0 SH |
2558 | |
2559 | memset(&path_rec, 0, sizeof path_rec); | |
4c33bd19 DC |
2560 | |
2561 | if (rdma_cap_opa_ah(id_priv->id.device, id_priv->id.port_num)) | |
2562 | path_rec.rec_type = SA_PATH_REC_TYPE_OPA; | |
2563 | else | |
2564 | path_rec.rec_type = SA_PATH_REC_TYPE_IB; | |
f4753834 SH |
2565 | rdma_addr_get_sgid(dev_addr, &path_rec.sgid); |
2566 | rdma_addr_get_dgid(dev_addr, &path_rec.dgid); | |
2567 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
e51060f0 | 2568 | path_rec.numb_path = 1; |
962063e6 | 2569 | path_rec.reversible = 1; |
d3957b86 MD |
2570 | path_rec.service_id = rdma_get_service_id(&id_priv->id, |
2571 | cma_dst_addr(id_priv)); | |
a81c994d SH |
2572 | |
2573 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
2574 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
2575 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
2576 | ||
f68194ca SH |
2577 | switch (cma_family(id_priv)) { |
2578 | case AF_INET: | |
a81c994d SH |
2579 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
2580 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
f68194ca SH |
2581 | break; |
2582 | case AF_INET6: | |
f4753834 | 2583 | sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
a81c994d SH |
2584 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); |
2585 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
f68194ca SH |
2586 | break; |
2587 | case AF_IB: | |
2588 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); | |
2589 | path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20); | |
2590 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
2591 | break; | |
a81c994d | 2592 | } |
e51060f0 | 2593 | |
c1a0b23b | 2594 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
2595 | id_priv->id.port_num, &path_rec, |
2596 | comp_mask, timeout_ms, | |
2597 | GFP_KERNEL, cma_query_handler, | |
2598 | work, &id_priv->query); | |
e51060f0 SH |
2599 | |
2600 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
2601 | } | |
2602 | ||
c4028958 | 2603 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 2604 | { |
c4028958 | 2605 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
2606 | struct rdma_id_private *id_priv = work->id; |
2607 | int destroy = 0; | |
2608 | ||
de910bd9 | 2609 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2610 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
2611 | goto out; | |
2612 | ||
2613 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2614 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
2615 | destroy = 1; |
2616 | } | |
2617 | out: | |
de910bd9 | 2618 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2619 | cma_deref_id(id_priv); |
2620 | if (destroy) | |
2621 | rdma_destroy_id(&id_priv->id); | |
2622 | kfree(work); | |
2623 | } | |
2624 | ||
dd5bdff8 OG |
2625 | static void cma_ndev_work_handler(struct work_struct *_work) |
2626 | { | |
2627 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
2628 | struct rdma_id_private *id_priv = work->id; | |
2629 | int destroy = 0; | |
2630 | ||
2631 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
2632 | if (id_priv->state == RDMA_CM_DESTROYING || |
2633 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
2634 | goto out; |
2635 | ||
2636 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2637 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
2638 | destroy = 1; |
2639 | } | |
2640 | ||
2641 | out: | |
2642 | mutex_unlock(&id_priv->handler_mutex); | |
2643 | cma_deref_id(id_priv); | |
2644 | if (destroy) | |
2645 | rdma_destroy_id(&id_priv->id); | |
2646 | kfree(work); | |
2647 | } | |
2648 | ||
981b5a23 PP |
2649 | static void cma_init_resolve_route_work(struct cma_work *work, |
2650 | struct rdma_id_private *id_priv) | |
2651 | { | |
2652 | work->id = id_priv; | |
2653 | INIT_WORK(&work->work, cma_work_handler); | |
2654 | work->old_state = RDMA_CM_ROUTE_QUERY; | |
2655 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
2656 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; | |
2657 | } | |
2658 | ||
2659 | static void cma_init_resolve_addr_work(struct cma_work *work, | |
2660 | struct rdma_id_private *id_priv) | |
2661 | { | |
2662 | work->id = id_priv; | |
2663 | INIT_WORK(&work->work, cma_work_handler); | |
2664 | work->old_state = RDMA_CM_ADDR_QUERY; | |
2665 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
2666 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
2667 | } | |
2668 | ||
dbace111 LR |
2669 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, |
2670 | unsigned long timeout_ms) | |
e51060f0 SH |
2671 | { |
2672 | struct rdma_route *route = &id_priv->id.route; | |
2673 | struct cma_work *work; | |
2674 | int ret; | |
2675 | ||
2676 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2677 | if (!work) | |
2678 | return -ENOMEM; | |
2679 | ||
981b5a23 | 2680 | cma_init_resolve_route_work(work, id_priv); |
e51060f0 SH |
2681 | |
2682 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2683 | if (!route->path_rec) { | |
2684 | ret = -ENOMEM; | |
2685 | goto err1; | |
2686 | } | |
2687 | ||
2688 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
2689 | if (ret) | |
2690 | goto err2; | |
2691 | ||
2692 | return 0; | |
2693 | err2: | |
2694 | kfree(route->path_rec); | |
2695 | route->path_rec = NULL; | |
2696 | err1: | |
2697 | kfree(work); | |
2698 | return ret; | |
2699 | } | |
2700 | ||
9327c7af PP |
2701 | static enum ib_gid_type cma_route_gid_type(enum rdma_network_type network_type, |
2702 | unsigned long supported_gids, | |
2703 | enum ib_gid_type default_gid) | |
2704 | { | |
2705 | if ((network_type == RDMA_NETWORK_IPV4 || | |
2706 | network_type == RDMA_NETWORK_IPV6) && | |
2707 | test_bit(IB_GID_TYPE_ROCE_UDP_ENCAP, &supported_gids)) | |
2708 | return IB_GID_TYPE_ROCE_UDP_ENCAP; | |
2709 | ||
2710 | return default_gid; | |
2711 | } | |
2712 | ||
2713 | /* | |
2714 | * cma_iboe_set_path_rec_l2_fields() is helper function which sets | |
2715 | * path record type based on GID type. | |
2716 | * It also sets up other L2 fields which includes destination mac address | |
2717 | * netdev ifindex, of the path record. | |
2718 | * It returns the netdev of the bound interface for this path record entry. | |
2719 | */ | |
2720 | static struct net_device * | |
2721 | cma_iboe_set_path_rec_l2_fields(struct rdma_id_private *id_priv) | |
2722 | { | |
2723 | struct rdma_route *route = &id_priv->id.route; | |
2724 | enum ib_gid_type gid_type = IB_GID_TYPE_ROCE; | |
2725 | struct rdma_addr *addr = &route->addr; | |
2726 | unsigned long supported_gids; | |
2727 | struct net_device *ndev; | |
2728 | ||
2729 | if (!addr->dev_addr.bound_dev_if) | |
2730 | return NULL; | |
2731 | ||
2732 | ndev = dev_get_by_index(addr->dev_addr.net, | |
2733 | addr->dev_addr.bound_dev_if); | |
2734 | if (!ndev) | |
2735 | return NULL; | |
2736 | ||
2737 | supported_gids = roce_gid_type_mask_support(id_priv->id.device, | |
2738 | id_priv->id.port_num); | |
2739 | gid_type = cma_route_gid_type(addr->dev_addr.network, | |
2740 | supported_gids, | |
2741 | id_priv->gid_type); | |
2742 | /* Use the hint from IP Stack to select GID Type */ | |
2743 | if (gid_type < ib_network_to_gid_type(addr->dev_addr.network)) | |
2744 | gid_type = ib_network_to_gid_type(addr->dev_addr.network); | |
2745 | route->path_rec->rec_type = sa_conv_gid_to_pathrec_type(gid_type); | |
2746 | ||
114cc9c4 | 2747 | route->path_rec->roce.route_resolved = true; |
9327c7af PP |
2748 | sa_path_set_dmac(route->path_rec, addr->dev_addr.dst_dev_addr); |
2749 | return ndev; | |
2750 | } | |
2751 | ||
fe75889f PP |
2752 | int rdma_set_ib_path(struct rdma_cm_id *id, |
2753 | struct sa_path_rec *path_rec) | |
e51060f0 SH |
2754 | { |
2755 | struct rdma_id_private *id_priv; | |
8d20a1f0 | 2756 | struct net_device *ndev; |
e51060f0 SH |
2757 | int ret; |
2758 | ||
2759 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
2760 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2761 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
2762 | return -EINVAL; |
2763 | ||
fe75889f | 2764 | id->route.path_rec = kmemdup(path_rec, sizeof(*path_rec), |
9893e742 | 2765 | GFP_KERNEL); |
e51060f0 SH |
2766 | if (!id->route.path_rec) { |
2767 | ret = -ENOMEM; | |
2768 | goto err; | |
2769 | } | |
2770 | ||
8d20a1f0 PP |
2771 | if (rdma_protocol_roce(id->device, id->port_num)) { |
2772 | ndev = cma_iboe_set_path_rec_l2_fields(id_priv); | |
2773 | if (!ndev) { | |
2774 | ret = -ENODEV; | |
2775 | goto err_free; | |
2776 | } | |
2777 | dev_put(ndev); | |
2778 | } | |
2779 | ||
fe75889f | 2780 | id->route.num_paths = 1; |
e51060f0 | 2781 | return 0; |
8d20a1f0 PP |
2782 | |
2783 | err_free: | |
2784 | kfree(id->route.path_rec); | |
2785 | id->route.path_rec = NULL; | |
e51060f0 | 2786 | err: |
550e5ca7 | 2787 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2788 | return ret; |
2789 | } | |
fe75889f | 2790 | EXPORT_SYMBOL(rdma_set_ib_path); |
e51060f0 | 2791 | |
d6f91252 | 2792 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv) |
07ebafba TT |
2793 | { |
2794 | struct cma_work *work; | |
2795 | ||
2796 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2797 | if (!work) | |
2798 | return -ENOMEM; | |
2799 | ||
981b5a23 | 2800 | cma_init_resolve_route_work(work, id_priv); |
07ebafba TT |
2801 | queue_work(cma_wq, &work->work); |
2802 | return 0; | |
2803 | } | |
2804 | ||
eb072c4b EP |
2805 | static int iboe_tos_to_sl(struct net_device *ndev, int tos) |
2806 | { | |
2807 | int prio; | |
2808 | struct net_device *dev; | |
2809 | ||
2810 | prio = rt_tos2priority(tos); | |
d0d7b10b | 2811 | dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev; |
eb072c4b EP |
2812 | if (dev->num_tc) |
2813 | return netdev_get_prio_tc_map(dev, prio); | |
2814 | ||
2815 | #if IS_ENABLED(CONFIG_VLAN_8021Q) | |
d0d7b10b | 2816 | if (is_vlan_dev(ndev)) |
eb072c4b EP |
2817 | return (vlan_dev_get_egress_qos_mask(ndev, prio) & |
2818 | VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
2819 | #endif | |
2820 | return 0; | |
2821 | } | |
2822 | ||
3c86aa70 EC |
2823 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
2824 | { | |
2825 | struct rdma_route *route = &id_priv->id.route; | |
2826 | struct rdma_addr *addr = &route->addr; | |
2827 | struct cma_work *work; | |
2828 | int ret; | |
4367ec7f | 2829 | struct net_device *ndev; |
4367ec7f | 2830 | |
89052d78 MD |
2831 | u8 default_roce_tos = id_priv->cma_dev->default_roce_tos[id_priv->id.port_num - |
2832 | rdma_start_port(id_priv->cma_dev->device)]; | |
2833 | u8 tos = id_priv->tos_set ? id_priv->tos : default_roce_tos; | |
dd5f03be | 2834 | |
3c86aa70 | 2835 | |
3c86aa70 EC |
2836 | work = kzalloc(sizeof *work, GFP_KERNEL); |
2837 | if (!work) | |
2838 | return -ENOMEM; | |
2839 | ||
3c86aa70 EC |
2840 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); |
2841 | if (!route->path_rec) { | |
2842 | ret = -ENOMEM; | |
2843 | goto err1; | |
2844 | } | |
2845 | ||
2846 | route->num_paths = 1; | |
2847 | ||
9327c7af | 2848 | ndev = cma_iboe_set_path_rec_l2_fields(id_priv); |
3c86aa70 EC |
2849 | if (!ndev) { |
2850 | ret = -ENODEV; | |
2851 | goto err2; | |
2852 | } | |
2853 | ||
7b85627b MS |
2854 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
2855 | &route->path_rec->sgid); | |
2856 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.dst_addr, | |
2857 | &route->path_rec->dgid); | |
af7bd463 | 2858 | |
c3efe750 | 2859 | if (((struct sockaddr *)&id_priv->id.route.addr.dst_addr)->sa_family != AF_IB) |
c865f246 | 2860 | /* TODO: get the hoplimit from the inet/inet6 device */ |
c3efe750 MB |
2861 | route->path_rec->hop_limit = addr->dev_addr.hoplimit; |
2862 | else | |
c865f246 | 2863 | route->path_rec->hop_limit = 1; |
af7bd463 EC |
2864 | route->path_rec->reversible = 1; |
2865 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
2866 | route->path_rec->mtu_selector = IB_SA_EQ; | |
89052d78 MD |
2867 | route->path_rec->sl = iboe_tos_to_sl(ndev, tos); |
2868 | route->path_rec->traffic_class = tos; | |
3c86aa70 EC |
2869 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
2870 | route->path_rec->rate_selector = IB_SA_EQ; | |
2871 | route->path_rec->rate = iboe_get_rate(ndev); | |
2872 | dev_put(ndev); | |
2873 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
2874 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
2875 | if (!route->path_rec->mtu) { | |
2876 | ret = -EINVAL; | |
2877 | goto err2; | |
2878 | } | |
2879 | ||
981b5a23 | 2880 | cma_init_resolve_route_work(work, id_priv); |
3c86aa70 EC |
2881 | queue_work(cma_wq, &work->work); |
2882 | ||
2883 | return 0; | |
2884 | ||
2885 | err2: | |
2886 | kfree(route->path_rec); | |
2887 | route->path_rec = NULL; | |
2888 | err1: | |
2889 | kfree(work); | |
2890 | return ret; | |
2891 | } | |
2892 | ||
dbace111 | 2893 | int rdma_resolve_route(struct rdma_cm_id *id, unsigned long timeout_ms) |
e51060f0 SH |
2894 | { |
2895 | struct rdma_id_private *id_priv; | |
2896 | int ret; | |
2897 | ||
2898 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2899 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
2900 | return -EINVAL; |
2901 | ||
2902 | atomic_inc(&id_priv->refcount); | |
fe53ba2f | 2903 | if (rdma_cap_ib_sa(id->device, id->port_num)) |
c72f2189 | 2904 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
5d9fb044 | 2905 | else if (rdma_protocol_roce(id->device, id->port_num)) |
c72f2189 MW |
2906 | ret = cma_resolve_iboe_route(id_priv); |
2907 | else if (rdma_protocol_iwarp(id->device, id->port_num)) | |
d6f91252 | 2908 | ret = cma_resolve_iw_route(id_priv); |
c72f2189 | 2909 | else |
e51060f0 | 2910 | ret = -ENOSYS; |
c72f2189 | 2911 | |
e51060f0 SH |
2912 | if (ret) |
2913 | goto err; | |
2914 | ||
2915 | return 0; | |
2916 | err: | |
550e5ca7 | 2917 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2918 | cma_deref_id(id_priv); |
2919 | return ret; | |
2920 | } | |
2921 | EXPORT_SYMBOL(rdma_resolve_route); | |
2922 | ||
6a3e362d SH |
2923 | static void cma_set_loopback(struct sockaddr *addr) |
2924 | { | |
2925 | switch (addr->sa_family) { | |
2926 | case AF_INET: | |
2927 | ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
2928 | break; | |
2929 | case AF_INET6: | |
2930 | ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr, | |
2931 | 0, 0, 0, htonl(1)); | |
2932 | break; | |
2933 | default: | |
2934 | ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr, | |
2935 | 0, 0, 0, htonl(1)); | |
2936 | break; | |
2937 | } | |
2938 | } | |
2939 | ||
e51060f0 SH |
2940 | static int cma_bind_loopback(struct rdma_id_private *id_priv) |
2941 | { | |
b0569e40 | 2942 | struct cma_device *cma_dev, *cur_dev; |
f0ee3404 | 2943 | union ib_gid gid; |
102c5ce0 | 2944 | enum ib_port_state port_state; |
e51060f0 SH |
2945 | u16 pkey; |
2946 | int ret; | |
2947 | u8 p; | |
2948 | ||
b0569e40 | 2949 | cma_dev = NULL; |
e51060f0 | 2950 | mutex_lock(&lock); |
b0569e40 SH |
2951 | list_for_each_entry(cur_dev, &dev_list, list) { |
2952 | if (cma_family(id_priv) == AF_IB && | |
72219cea | 2953 | !rdma_cap_ib_cm(cur_dev->device, 1)) |
b0569e40 SH |
2954 | continue; |
2955 | ||
2956 | if (!cma_dev) | |
2957 | cma_dev = cur_dev; | |
2958 | ||
2959 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { | |
102c5ce0 JW |
2960 | if (!ib_get_cached_port_state(cur_dev->device, p, &port_state) && |
2961 | port_state == IB_PORT_ACTIVE) { | |
b0569e40 SH |
2962 | cma_dev = cur_dev; |
2963 | goto port_found; | |
2964 | } | |
2965 | } | |
2966 | } | |
2967 | ||
2968 | if (!cma_dev) { | |
e82153b5 KK |
2969 | ret = -ENODEV; |
2970 | goto out; | |
2971 | } | |
e51060f0 | 2972 | |
e82153b5 | 2973 | p = 1; |
e51060f0 SH |
2974 | |
2975 | port_found: | |
1dfce294 | 2976 | ret = rdma_query_gid(cma_dev->device, p, 0, &gid); |
e51060f0 SH |
2977 | if (ret) |
2978 | goto out; | |
2979 | ||
2980 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
2981 | if (ret) | |
2982 | goto out; | |
2983 | ||
6f8372b6 | 2984 | id_priv->id.route.addr.dev_addr.dev_type = |
21655afc | 2985 | (rdma_protocol_ib(cma_dev->device, p)) ? |
6f8372b6 SH |
2986 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
2987 | ||
2988 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
2989 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
2990 | id_priv->id.port_num = p; | |
2991 | cma_attach_to_dev(id_priv, cma_dev); | |
f4753834 | 2992 | cma_set_loopback(cma_src_addr(id_priv)); |
e51060f0 SH |
2993 | out: |
2994 | mutex_unlock(&lock); | |
2995 | return ret; | |
2996 | } | |
2997 | ||
2998 | static void addr_handler(int status, struct sockaddr *src_addr, | |
2999 | struct rdma_dev_addr *dev_addr, void *context) | |
3000 | { | |
3001 | struct rdma_id_private *id_priv = context; | |
7582df82 | 3002 | struct rdma_cm_event event = {}; |
5fc01fb8 MJ |
3003 | struct sockaddr *addr; |
3004 | struct sockaddr_storage old_addr; | |
e51060f0 | 3005 | |
de910bd9 | 3006 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
3007 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
3008 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 3009 | goto out; |
61a73c70 | 3010 | |
5fc01fb8 MJ |
3011 | /* |
3012 | * Store the previous src address, so that if we fail to acquire | |
3013 | * matching rdma device, old address can be restored back, which helps | |
3014 | * to cancel the cma listen operation correctly. | |
3015 | */ | |
3016 | addr = cma_src_addr(id_priv); | |
3017 | memcpy(&old_addr, addr, rdma_addr_size(addr)); | |
3018 | memcpy(addr, src_addr, rdma_addr_size(src_addr)); | |
498683c6 | 3019 | if (!status && !id_priv->cma_dev) { |
ff11c6cd | 3020 | status = cma_acquire_dev_by_src_ip(id_priv); |
498683c6 MS |
3021 | if (status) |
3022 | pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to acquire device. status %d\n", | |
3023 | status); | |
3024 | } else { | |
3025 | pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to resolve IP. status %d\n", status); | |
3026 | } | |
e51060f0 SH |
3027 | |
3028 | if (status) { | |
5fc01fb8 MJ |
3029 | memcpy(addr, &old_addr, |
3030 | rdma_addr_size((struct sockaddr *)&old_addr)); | |
550e5ca7 NM |
3031 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
3032 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 3033 | goto out; |
a1b1b61f SH |
3034 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
3035 | event.status = status; | |
7b85627b | 3036 | } else |
a1b1b61f | 3037 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 | 3038 | |
a1b1b61f | 3039 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 3040 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3041 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
3042 | rdma_destroy_id(&id_priv->id); |
3043 | return; | |
3044 | } | |
3045 | out: | |
de910bd9 | 3046 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
3047 | } |
3048 | ||
3049 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
3050 | { | |
3051 | struct cma_work *work; | |
f0ee3404 | 3052 | union ib_gid gid; |
e51060f0 SH |
3053 | int ret; |
3054 | ||
3055 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3056 | if (!work) | |
3057 | return -ENOMEM; | |
3058 | ||
3059 | if (!id_priv->cma_dev) { | |
3060 | ret = cma_bind_loopback(id_priv); | |
3061 | if (ret) | |
3062 | goto err; | |
3063 | } | |
3064 | ||
6f8372b6 SH |
3065 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
3066 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 3067 | |
981b5a23 | 3068 | cma_init_resolve_addr_work(work, id_priv); |
e51060f0 SH |
3069 | queue_work(cma_wq, &work->work); |
3070 | return 0; | |
3071 | err: | |
3072 | kfree(work); | |
3073 | return ret; | |
3074 | } | |
3075 | ||
f17df3b0 SH |
3076 | static int cma_resolve_ib_addr(struct rdma_id_private *id_priv) |
3077 | { | |
3078 | struct cma_work *work; | |
3079 | int ret; | |
3080 | ||
3081 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3082 | if (!work) | |
3083 | return -ENOMEM; | |
3084 | ||
3085 | if (!id_priv->cma_dev) { | |
3086 | ret = cma_resolve_ib_dev(id_priv); | |
3087 | if (ret) | |
3088 | goto err; | |
3089 | } | |
3090 | ||
3091 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *) | |
3092 | &(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr)); | |
3093 | ||
981b5a23 | 3094 | cma_init_resolve_addr_work(work, id_priv); |
f17df3b0 SH |
3095 | queue_work(cma_wq, &work->work); |
3096 | return 0; | |
3097 | err: | |
3098 | kfree(work); | |
3099 | return ret; | |
3100 | } | |
3101 | ||
e51060f0 | 3102 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, |
2df7dba8 | 3103 | const struct sockaddr *dst_addr) |
e51060f0 | 3104 | { |
d14714df SH |
3105 | if (!src_addr || !src_addr->sa_family) { |
3106 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
f17df3b0 | 3107 | src_addr->sa_family = dst_addr->sa_family; |
b4cfe397 JM |
3108 | if (IS_ENABLED(CONFIG_IPV6) && |
3109 | dst_addr->sa_family == AF_INET6) { | |
6c26a771 SB |
3110 | struct sockaddr_in6 *src_addr6 = (struct sockaddr_in6 *) src_addr; |
3111 | struct sockaddr_in6 *dst_addr6 = (struct sockaddr_in6 *) dst_addr; | |
3112 | src_addr6->sin6_scope_id = dst_addr6->sin6_scope_id; | |
3113 | if (ipv6_addr_type(&dst_addr6->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
3114 | id->route.addr.dev_addr.bound_dev_if = dst_addr6->sin6_scope_id; | |
f17df3b0 SH |
3115 | } else if (dst_addr->sa_family == AF_IB) { |
3116 | ((struct sockaddr_ib *) src_addr)->sib_pkey = | |
3117 | ((struct sockaddr_ib *) dst_addr)->sib_pkey; | |
d14714df SH |
3118 | } |
3119 | } | |
3120 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
3121 | } |
3122 | ||
3123 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
dbace111 | 3124 | const struct sockaddr *dst_addr, unsigned long timeout_ms) |
e51060f0 SH |
3125 | { |
3126 | struct rdma_id_private *id_priv; | |
3127 | int ret; | |
3128 | ||
3129 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3130 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 | 3131 | ret = cma_bind_addr(id, src_addr, dst_addr); |
219d2e9d | 3132 | if (ret) |
e51060f0 SH |
3133 | return ret; |
3134 | } | |
3135 | ||
219d2e9d | 3136 | if (cma_family(id_priv) != dst_addr->sa_family) |
4ae7152e SH |
3137 | return -EINVAL; |
3138 | ||
219d2e9d | 3139 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
3140 | return -EINVAL; |
3141 | ||
219d2e9d | 3142 | memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); |
f17df3b0 | 3143 | if (cma_any_addr(dst_addr)) { |
e51060f0 | 3144 | ret = cma_resolve_loopback(id_priv); |
f17df3b0 SH |
3145 | } else { |
3146 | if (dst_addr->sa_family == AF_IB) { | |
3147 | ret = cma_resolve_ib_addr(id_priv); | |
3148 | } else { | |
0e9d2c19 PP |
3149 | ret = rdma_resolve_ip(cma_src_addr(id_priv), dst_addr, |
3150 | &id->route.addr.dev_addr, | |
3151 | timeout_ms, addr_handler, | |
3152 | false, id_priv); | |
f17df3b0 SH |
3153 | } |
3154 | } | |
e51060f0 SH |
3155 | if (ret) |
3156 | goto err; | |
3157 | ||
3158 | return 0; | |
3159 | err: | |
550e5ca7 | 3160 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
3161 | return ret; |
3162 | } | |
3163 | EXPORT_SYMBOL(rdma_resolve_addr); | |
3164 | ||
a9bb7912 HS |
3165 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
3166 | { | |
3167 | struct rdma_id_private *id_priv; | |
3168 | unsigned long flags; | |
3169 | int ret; | |
3170 | ||
3171 | id_priv = container_of(id, struct rdma_id_private, id); | |
3172 | spin_lock_irqsave(&id_priv->lock, flags); | |
c8dea2f9 | 3173 | if (reuse || id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
3174 | id_priv->reuseaddr = reuse; |
3175 | ret = 0; | |
3176 | } else { | |
3177 | ret = -EINVAL; | |
3178 | } | |
3179 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
3180 | return ret; | |
3181 | } | |
3182 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
3183 | ||
68602120 SH |
3184 | int rdma_set_afonly(struct rdma_cm_id *id, int afonly) |
3185 | { | |
3186 | struct rdma_id_private *id_priv; | |
3187 | unsigned long flags; | |
3188 | int ret; | |
3189 | ||
3190 | id_priv = container_of(id, struct rdma_id_private, id); | |
3191 | spin_lock_irqsave(&id_priv->lock, flags); | |
3192 | if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { | |
3193 | id_priv->options |= (1 << CMA_OPTION_AFONLY); | |
3194 | id_priv->afonly = afonly; | |
3195 | ret = 0; | |
3196 | } else { | |
3197 | ret = -EINVAL; | |
3198 | } | |
3199 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
3200 | return ret; | |
3201 | } | |
3202 | EXPORT_SYMBOL(rdma_set_afonly); | |
3203 | ||
e51060f0 SH |
3204 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
3205 | struct rdma_id_private *id_priv) | |
3206 | { | |
58afdcb7 SH |
3207 | struct sockaddr *addr; |
3208 | struct sockaddr_ib *sib; | |
3209 | u64 sid, mask; | |
3210 | __be16 port; | |
e51060f0 | 3211 | |
f4753834 | 3212 | addr = cma_src_addr(id_priv); |
58afdcb7 SH |
3213 | port = htons(bind_list->port); |
3214 | ||
3215 | switch (addr->sa_family) { | |
3216 | case AF_INET: | |
3217 | ((struct sockaddr_in *) addr)->sin_port = port; | |
3218 | break; | |
3219 | case AF_INET6: | |
3220 | ((struct sockaddr_in6 *) addr)->sin6_port = port; | |
3221 | break; | |
3222 | case AF_IB: | |
3223 | sib = (struct sockaddr_ib *) addr; | |
3224 | sid = be64_to_cpu(sib->sib_sid); | |
3225 | mask = be64_to_cpu(sib->sib_sid_mask); | |
3226 | sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port)); | |
3227 | sib->sib_sid_mask = cpu_to_be64(~0ULL); | |
3228 | break; | |
3229 | } | |
e51060f0 SH |
3230 | id_priv->bind_list = bind_list; |
3231 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
3232 | } | |
3233 | ||
2253fc0c | 3234 | static int cma_alloc_port(enum rdma_ucm_port_space ps, |
aac978e1 | 3235 | struct rdma_id_private *id_priv, unsigned short snum) |
e51060f0 SH |
3236 | { |
3237 | struct rdma_bind_list *bind_list; | |
3b069c5d | 3238 | int ret; |
e51060f0 | 3239 | |
cb164b8c | 3240 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
3241 | if (!bind_list) |
3242 | return -ENOMEM; | |
3243 | ||
fa20105e GS |
3244 | ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list, |
3245 | snum); | |
3b069c5d TH |
3246 | if (ret < 0) |
3247 | goto err; | |
aedec080 SH |
3248 | |
3249 | bind_list->ps = ps; | |
3b069c5d | 3250 | bind_list->port = (unsigned short)ret; |
aedec080 SH |
3251 | cma_bind_port(bind_list, id_priv); |
3252 | return 0; | |
3b069c5d | 3253 | err: |
aedec080 | 3254 | kfree(bind_list); |
3b069c5d | 3255 | return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; |
aedec080 | 3256 | } |
e51060f0 | 3257 | |
19b752a1 MS |
3258 | static int cma_port_is_unique(struct rdma_bind_list *bind_list, |
3259 | struct rdma_id_private *id_priv) | |
3260 | { | |
3261 | struct rdma_id_private *cur_id; | |
3262 | struct sockaddr *daddr = cma_dst_addr(id_priv); | |
3263 | struct sockaddr *saddr = cma_src_addr(id_priv); | |
3264 | __be16 dport = cma_port(daddr); | |
3265 | ||
3266 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { | |
3267 | struct sockaddr *cur_daddr = cma_dst_addr(cur_id); | |
3268 | struct sockaddr *cur_saddr = cma_src_addr(cur_id); | |
3269 | __be16 cur_dport = cma_port(cur_daddr); | |
3270 | ||
3271 | if (id_priv == cur_id) | |
3272 | continue; | |
3273 | ||
3274 | /* different dest port -> unique */ | |
9dea9a2f TN |
3275 | if (!cma_any_port(daddr) && |
3276 | !cma_any_port(cur_daddr) && | |
19b752a1 MS |
3277 | (dport != cur_dport)) |
3278 | continue; | |
3279 | ||
3280 | /* different src address -> unique */ | |
3281 | if (!cma_any_addr(saddr) && | |
3282 | !cma_any_addr(cur_saddr) && | |
3283 | cma_addr_cmp(saddr, cur_saddr)) | |
3284 | continue; | |
3285 | ||
3286 | /* different dst address -> unique */ | |
9dea9a2f TN |
3287 | if (!cma_any_addr(daddr) && |
3288 | !cma_any_addr(cur_daddr) && | |
19b752a1 MS |
3289 | cma_addr_cmp(daddr, cur_daddr)) |
3290 | continue; | |
3291 | ||
3292 | return -EADDRNOTAVAIL; | |
3293 | } | |
3294 | return 0; | |
3295 | } | |
3296 | ||
2253fc0c | 3297 | static int cma_alloc_any_port(enum rdma_ucm_port_space ps, |
aac978e1 | 3298 | struct rdma_id_private *id_priv) |
aedec080 | 3299 | { |
5d7220e8 TH |
3300 | static unsigned int last_used_port; |
3301 | int low, high, remaining; | |
3302 | unsigned int rover; | |
fa20105e | 3303 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 | 3304 | |
fa20105e | 3305 | inet_get_local_port_range(net, &low, &high); |
5d7220e8 | 3306 | remaining = (high - low) + 1; |
63862b5b | 3307 | rover = prandom_u32() % remaining + low; |
5d7220e8 | 3308 | retry: |
19b752a1 MS |
3309 | if (last_used_port != rover) { |
3310 | struct rdma_bind_list *bind_list; | |
3311 | int ret; | |
3312 | ||
3313 | bind_list = cma_ps_find(net, ps, (unsigned short)rover); | |
3314 | ||
3315 | if (!bind_list) { | |
3316 | ret = cma_alloc_port(ps, id_priv, rover); | |
3317 | } else { | |
3318 | ret = cma_port_is_unique(bind_list, id_priv); | |
3319 | if (!ret) | |
3320 | cma_bind_port(bind_list, id_priv); | |
3321 | } | |
5d7220e8 TH |
3322 | /* |
3323 | * Remember previously used port number in order to avoid | |
3324 | * re-using same port immediately after it is closed. | |
3325 | */ | |
3326 | if (!ret) | |
3327 | last_used_port = rover; | |
3328 | if (ret != -EADDRNOTAVAIL) | |
3329 | return ret; | |
e51060f0 | 3330 | } |
5d7220e8 TH |
3331 | if (--remaining) { |
3332 | rover++; | |
3333 | if ((rover < low) || (rover > high)) | |
3334 | rover = low; | |
3335 | goto retry; | |
3336 | } | |
3337 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
3338 | } |
3339 | ||
a9bb7912 HS |
3340 | /* |
3341 | * Check that the requested port is available. This is called when trying to | |
3342 | * bind to a specific port, or when trying to listen on a bound port. In | |
3343 | * the latter case, the provided id_priv may already be on the bind_list, but | |
3344 | * we still need to check that it's okay to start listening. | |
3345 | */ | |
3346 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
3347 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
3348 | { |
3349 | struct rdma_id_private *cur_id; | |
43b752da | 3350 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 3351 | |
f4753834 | 3352 | addr = cma_src_addr(id_priv); |
b67bfe0d | 3353 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { |
a9bb7912 HS |
3354 | if (id_priv == cur_id) |
3355 | continue; | |
3cd96564 | 3356 | |
5b0ec991 SH |
3357 | if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && |
3358 | cur_id->reuseaddr) | |
3359 | continue; | |
e51060f0 | 3360 | |
f4753834 | 3361 | cur_addr = cma_src_addr(cur_id); |
5b0ec991 SH |
3362 | if (id_priv->afonly && cur_id->afonly && |
3363 | (addr->sa_family != cur_addr->sa_family)) | |
3364 | continue; | |
3365 | ||
3366 | if (cma_any_addr(addr) || cma_any_addr(cur_addr)) | |
3367 | return -EADDRNOTAVAIL; | |
3368 | ||
3369 | if (!cma_addr_cmp(addr, cur_addr)) | |
3370 | return -EADDRINUSE; | |
a9bb7912 | 3371 | } |
e51060f0 SH |
3372 | return 0; |
3373 | } | |
3374 | ||
2253fc0c | 3375 | static int cma_use_port(enum rdma_ucm_port_space ps, |
aac978e1 | 3376 | struct rdma_id_private *id_priv) |
a9bb7912 HS |
3377 | { |
3378 | struct rdma_bind_list *bind_list; | |
3379 | unsigned short snum; | |
3380 | int ret; | |
3381 | ||
f4753834 | 3382 | snum = ntohs(cma_port(cma_src_addr(id_priv))); |
a9bb7912 HS |
3383 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
3384 | return -EACCES; | |
3385 | ||
fa20105e | 3386 | bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum); |
a9bb7912 HS |
3387 | if (!bind_list) { |
3388 | ret = cma_alloc_port(ps, id_priv, snum); | |
3389 | } else { | |
3390 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
3391 | if (!ret) | |
3392 | cma_bind_port(bind_list, id_priv); | |
3393 | } | |
3394 | return ret; | |
3395 | } | |
3396 | ||
3397 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
3398 | { | |
3399 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
3400 | int ret = 0; | |
3401 | ||
3402 | mutex_lock(&lock); | |
3403 | if (bind_list->owners.first->next) | |
3404 | ret = cma_check_port(bind_list, id_priv, 0); | |
3405 | mutex_unlock(&lock); | |
3406 | return ret; | |
3407 | } | |
3408 | ||
2253fc0c SW |
3409 | static enum rdma_ucm_port_space |
3410 | cma_select_inet_ps(struct rdma_id_private *id_priv) | |
e51060f0 | 3411 | { |
e51060f0 | 3412 | switch (id_priv->id.ps) { |
e51060f0 | 3413 | case RDMA_PS_TCP: |
628e5f6d | 3414 | case RDMA_PS_UDP: |
c8f6a362 | 3415 | case RDMA_PS_IPOIB: |
2d2e9415 | 3416 | case RDMA_PS_IB: |
aac978e1 | 3417 | return id_priv->id.ps; |
e51060f0 | 3418 | default: |
aac978e1 HE |
3419 | |
3420 | return 0; | |
58afdcb7 SH |
3421 | } |
3422 | } | |
3423 | ||
2253fc0c SW |
3424 | static enum rdma_ucm_port_space |
3425 | cma_select_ib_ps(struct rdma_id_private *id_priv) | |
58afdcb7 | 3426 | { |
2253fc0c | 3427 | enum rdma_ucm_port_space ps = 0; |
58afdcb7 SH |
3428 | struct sockaddr_ib *sib; |
3429 | u64 sid_ps, mask, sid; | |
3430 | ||
f4753834 | 3431 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); |
58afdcb7 SH |
3432 | mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK; |
3433 | sid = be64_to_cpu(sib->sib_sid) & mask; | |
3434 | ||
3435 | if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) { | |
3436 | sid_ps = RDMA_IB_IP_PS_IB; | |
aac978e1 | 3437 | ps = RDMA_PS_IB; |
58afdcb7 SH |
3438 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) && |
3439 | (sid == (RDMA_IB_IP_PS_TCP & mask))) { | |
3440 | sid_ps = RDMA_IB_IP_PS_TCP; | |
aac978e1 | 3441 | ps = RDMA_PS_TCP; |
58afdcb7 SH |
3442 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) && |
3443 | (sid == (RDMA_IB_IP_PS_UDP & mask))) { | |
3444 | sid_ps = RDMA_IB_IP_PS_UDP; | |
aac978e1 | 3445 | ps = RDMA_PS_UDP; |
e51060f0 SH |
3446 | } |
3447 | ||
58afdcb7 SH |
3448 | if (ps) { |
3449 | sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib))); | |
3450 | sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK | | |
3451 | be64_to_cpu(sib->sib_sid_mask)); | |
3452 | } | |
3453 | return ps; | |
3454 | } | |
3455 | ||
3456 | static int cma_get_port(struct rdma_id_private *id_priv) | |
3457 | { | |
2253fc0c | 3458 | enum rdma_ucm_port_space ps; |
58afdcb7 SH |
3459 | int ret; |
3460 | ||
f4753834 | 3461 | if (cma_family(id_priv) != AF_IB) |
58afdcb7 SH |
3462 | ps = cma_select_inet_ps(id_priv); |
3463 | else | |
3464 | ps = cma_select_ib_ps(id_priv); | |
3465 | if (!ps) | |
3466 | return -EPROTONOSUPPORT; | |
3467 | ||
e51060f0 | 3468 | mutex_lock(&lock); |
f4753834 | 3469 | if (cma_any_port(cma_src_addr(id_priv))) |
aedec080 | 3470 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
3471 | else |
3472 | ret = cma_use_port(ps, id_priv); | |
3473 | mutex_unlock(&lock); | |
3474 | ||
3475 | return ret; | |
3476 | } | |
3477 | ||
d14714df SH |
3478 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
3479 | struct sockaddr *addr) | |
3480 | { | |
d90f9b35 | 3481 | #if IS_ENABLED(CONFIG_IPV6) |
d14714df SH |
3482 | struct sockaddr_in6 *sin6; |
3483 | ||
3484 | if (addr->sa_family != AF_INET6) | |
3485 | return 0; | |
3486 | ||
3487 | sin6 = (struct sockaddr_in6 *) addr; | |
5462eddd SK |
3488 | |
3489 | if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)) | |
3490 | return 0; | |
3491 | ||
3492 | if (!sin6->sin6_scope_id) | |
d14714df SH |
3493 | return -EINVAL; |
3494 | ||
3495 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
3496 | #endif | |
3497 | return 0; | |
3498 | } | |
3499 | ||
a9bb7912 HS |
3500 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
3501 | { | |
3502 | struct rdma_id_private *id_priv; | |
3503 | int ret; | |
3504 | ||
3505 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3506 | if (id_priv->state == RDMA_CM_IDLE) { |
f4753834 SH |
3507 | id->route.addr.src_addr.ss_family = AF_INET; |
3508 | ret = rdma_bind_addr(id, cma_src_addr(id_priv)); | |
a9bb7912 HS |
3509 | if (ret) |
3510 | return ret; | |
3511 | } | |
3512 | ||
550e5ca7 | 3513 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
3514 | return -EINVAL; |
3515 | ||
3516 | if (id_priv->reuseaddr) { | |
3517 | ret = cma_bind_listen(id_priv); | |
3518 | if (ret) | |
3519 | goto err; | |
3520 | } | |
3521 | ||
3522 | id_priv->backlog = backlog; | |
3523 | if (id->device) { | |
72219cea | 3524 | if (rdma_cap_ib_cm(id->device, 1)) { |
a9bb7912 HS |
3525 | ret = cma_ib_listen(id_priv); |
3526 | if (ret) | |
3527 | goto err; | |
04215330 | 3528 | } else if (rdma_cap_iw_cm(id->device, 1)) { |
a9bb7912 HS |
3529 | ret = cma_iw_listen(id_priv, backlog); |
3530 | if (ret) | |
3531 | goto err; | |
21655afc | 3532 | } else { |
a9bb7912 HS |
3533 | ret = -ENOSYS; |
3534 | goto err; | |
3535 | } | |
3536 | } else | |
3537 | cma_listen_on_all(id_priv); | |
3538 | ||
3539 | return 0; | |
3540 | err: | |
3541 | id_priv->backlog = 0; | |
550e5ca7 | 3542 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
3543 | return ret; |
3544 | } | |
3545 | EXPORT_SYMBOL(rdma_listen); | |
3546 | ||
e51060f0 SH |
3547 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
3548 | { | |
3549 | struct rdma_id_private *id_priv; | |
3550 | int ret; | |
6df6b4a9 | 3551 | struct sockaddr *daddr; |
e51060f0 | 3552 | |
680f920a SH |
3553 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 && |
3554 | addr->sa_family != AF_IB) | |
e51060f0 SH |
3555 | return -EAFNOSUPPORT; |
3556 | ||
3557 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3558 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
3559 | return -EINVAL; |
3560 | ||
d14714df SH |
3561 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
3562 | if (ret) | |
3563 | goto err1; | |
3564 | ||
7b85627b | 3565 | memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr)); |
8523c048 | 3566 | if (!cma_any_addr(addr)) { |
680f920a | 3567 | ret = cma_translate_addr(addr, &id->route.addr.dev_addr); |
e51060f0 | 3568 | if (ret) |
255d0c14 KK |
3569 | goto err1; |
3570 | ||
ff11c6cd | 3571 | ret = cma_acquire_dev_by_src_ip(id_priv); |
255d0c14 KK |
3572 | if (ret) |
3573 | goto err1; | |
e51060f0 SH |
3574 | } |
3575 | ||
68602120 SH |
3576 | if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { |
3577 | if (addr->sa_family == AF_INET) | |
3578 | id_priv->afonly = 1; | |
5b0ec991 | 3579 | #if IS_ENABLED(CONFIG_IPV6) |
fa20105e GS |
3580 | else if (addr->sa_family == AF_INET6) { |
3581 | struct net *net = id_priv->id.route.addr.dev_addr.net; | |
3582 | ||
3583 | id_priv->afonly = net->ipv6.sysctl.bindv6only; | |
3584 | } | |
5b0ec991 | 3585 | #endif |
68602120 | 3586 | } |
9dea9a2f TN |
3587 | daddr = cma_dst_addr(id_priv); |
3588 | daddr->sa_family = addr->sa_family; | |
3589 | ||
e51060f0 SH |
3590 | ret = cma_get_port(id_priv); |
3591 | if (ret) | |
255d0c14 | 3592 | goto err2; |
e51060f0 SH |
3593 | |
3594 | return 0; | |
255d0c14 | 3595 | err2: |
ed7a01fd LR |
3596 | rdma_restrack_del(&id_priv->res); |
3597 | if (id_priv->cma_dev) | |
a396d43a | 3598 | cma_release_dev(id_priv); |
255d0c14 | 3599 | err1: |
550e5ca7 | 3600 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
3601 | return ret; |
3602 | } | |
3603 | EXPORT_SYMBOL(rdma_bind_addr); | |
3604 | ||
f4753834 | 3605 | static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv) |
e51060f0 | 3606 | { |
e51060f0 | 3607 | struct cma_hdr *cma_hdr; |
e51060f0 | 3608 | |
01602f11 SH |
3609 | cma_hdr = hdr; |
3610 | cma_hdr->cma_version = CMA_VERSION; | |
f4753834 | 3611 | if (cma_family(id_priv) == AF_INET) { |
1f5175ad AS |
3612 | struct sockaddr_in *src4, *dst4; |
3613 | ||
f4753834 SH |
3614 | src4 = (struct sockaddr_in *) cma_src_addr(id_priv); |
3615 | dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv); | |
1f5175ad | 3616 | |
01602f11 SH |
3617 | cma_set_ip_ver(cma_hdr, 4); |
3618 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
3619 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
3620 | cma_hdr->port = src4->sin_port; | |
e8160e15 | 3621 | } else if (cma_family(id_priv) == AF_INET6) { |
1f5175ad AS |
3622 | struct sockaddr_in6 *src6, *dst6; |
3623 | ||
f4753834 SH |
3624 | src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
3625 | dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv); | |
1f5175ad | 3626 | |
01602f11 SH |
3627 | cma_set_ip_ver(cma_hdr, 6); |
3628 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
3629 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
3630 | cma_hdr->port = src6->sin6_port; | |
e51060f0 SH |
3631 | } |
3632 | return 0; | |
3633 | } | |
3634 | ||
628e5f6d | 3635 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
e7ff98ae | 3636 | const struct ib_cm_event *ib_event) |
628e5f6d SH |
3637 | { |
3638 | struct rdma_id_private *id_priv = cm_id->context; | |
7582df82 | 3639 | struct rdma_cm_event event = {}; |
e7ff98ae PP |
3640 | const struct ib_cm_sidr_rep_event_param *rep = |
3641 | &ib_event->param.sidr_rep_rcvd; | |
628e5f6d SH |
3642 | int ret = 0; |
3643 | ||
37e07cda BVA |
3644 | mutex_lock(&id_priv->handler_mutex); |
3645 | if (id_priv->state != RDMA_CM_CONNECT) | |
3646 | goto out; | |
628e5f6d SH |
3647 | |
3648 | switch (ib_event->event) { | |
3649 | case IB_CM_SIDR_REQ_ERROR: | |
3650 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3651 | event.status = -ETIMEDOUT; | |
3652 | break; | |
3653 | case IB_CM_SIDR_REP_RECEIVED: | |
3654 | event.param.ud.private_data = ib_event->private_data; | |
3655 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
3656 | if (rep->status != IB_SIDR_SUCCESS) { | |
3657 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3658 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
498683c6 MS |
3659 | pr_debug_ratelimited("RDMA CM: UNREACHABLE: bad SIDR reply. status %d\n", |
3660 | event.status); | |
628e5f6d SH |
3661 | break; |
3662 | } | |
5c438135 | 3663 | ret = cma_set_qkey(id_priv, rep->qkey); |
d2ca39f2 | 3664 | if (ret) { |
498683c6 | 3665 | pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to set qkey. status %d\n", ret); |
d2ca39f2 | 3666 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
5c438135 | 3667 | event.status = ret; |
628e5f6d SH |
3668 | break; |
3669 | } | |
4ad6a024 PP |
3670 | ib_init_ah_attr_from_path(id_priv->id.device, |
3671 | id_priv->id.port_num, | |
3672 | id_priv->id.route.path_rec, | |
39839107 PP |
3673 | &event.param.ud.ah_attr, |
3674 | rep->sgid_attr); | |
628e5f6d SH |
3675 | event.param.ud.qp_num = rep->qpn; |
3676 | event.param.ud.qkey = rep->qkey; | |
3677 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
3678 | event.status = 0; | |
3679 | break; | |
3680 | default: | |
aba25a3e | 3681 | pr_err("RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
3682 | ib_event->event); |
3683 | goto out; | |
3684 | } | |
3685 | ||
3686 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
aa74f487 PP |
3687 | |
3688 | rdma_destroy_ah_attr(&event.param.ud.ah_attr); | |
628e5f6d SH |
3689 | if (ret) { |
3690 | /* Destroy the CM ID by returning a non-zero value. */ | |
3691 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 3692 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3693 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3694 | rdma_destroy_id(&id_priv->id); |
3695 | return ret; | |
3696 | } | |
3697 | out: | |
de910bd9 | 3698 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3699 | return ret; |
3700 | } | |
3701 | ||
3702 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
3703 | struct rdma_conn_param *conn_param) | |
3704 | { | |
3705 | struct ib_cm_sidr_req_param req; | |
0c9361fc | 3706 | struct ib_cm_id *id; |
e511d1ae | 3707 | void *private_data; |
c0b64f58 BVA |
3708 | u8 offset; |
3709 | int ret; | |
628e5f6d | 3710 | |
e511d1ae | 3711 | memset(&req, 0, sizeof req); |
e8160e15 SH |
3712 | offset = cma_user_data_offset(id_priv); |
3713 | req.private_data_len = offset + conn_param->private_data_len; | |
04ded167 SH |
3714 | if (req.private_data_len < conn_param->private_data_len) |
3715 | return -EINVAL; | |
3716 | ||
e8160e15 | 3717 | if (req.private_data_len) { |
e511d1ae SH |
3718 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
3719 | if (!private_data) | |
e8160e15 SH |
3720 | return -ENOMEM; |
3721 | } else { | |
e511d1ae | 3722 | private_data = NULL; |
e8160e15 | 3723 | } |
628e5f6d SH |
3724 | |
3725 | if (conn_param->private_data && conn_param->private_data_len) | |
e511d1ae SH |
3726 | memcpy(private_data + offset, conn_param->private_data, |
3727 | conn_param->private_data_len); | |
628e5f6d | 3728 | |
e511d1ae SH |
3729 | if (private_data) { |
3730 | ret = cma_format_hdr(private_data, id_priv); | |
e8160e15 SH |
3731 | if (ret) |
3732 | goto out; | |
e511d1ae | 3733 | req.private_data = private_data; |
e8160e15 | 3734 | } |
628e5f6d | 3735 | |
0c9361fc JM |
3736 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
3737 | id_priv); | |
3738 | if (IS_ERR(id)) { | |
3739 | ret = PTR_ERR(id); | |
628e5f6d SH |
3740 | goto out; |
3741 | } | |
0c9361fc | 3742 | id_priv->cm_id.ib = id; |
628e5f6d | 3743 | |
f4753834 | 3744 | req.path = id_priv->id.route.path_rec; |
815d456e | 3745 | req.sgid_attr = id_priv->id.route.addr.dev_addr.sgid_attr; |
cf53936f | 3746 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
628e5f6d SH |
3747 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
3748 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3749 | ||
3750 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
3751 | if (ret) { | |
3752 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
3753 | id_priv->cm_id.ib = NULL; | |
3754 | } | |
3755 | out: | |
e511d1ae | 3756 | kfree(private_data); |
628e5f6d SH |
3757 | return ret; |
3758 | } | |
3759 | ||
e51060f0 SH |
3760 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
3761 | struct rdma_conn_param *conn_param) | |
3762 | { | |
3763 | struct ib_cm_req_param req; | |
3764 | struct rdma_route *route; | |
3765 | void *private_data; | |
0c9361fc | 3766 | struct ib_cm_id *id; |
c0b64f58 BVA |
3767 | u8 offset; |
3768 | int ret; | |
e51060f0 SH |
3769 | |
3770 | memset(&req, 0, sizeof req); | |
e8160e15 | 3771 | offset = cma_user_data_offset(id_priv); |
e51060f0 | 3772 | req.private_data_len = offset + conn_param->private_data_len; |
04ded167 SH |
3773 | if (req.private_data_len < conn_param->private_data_len) |
3774 | return -EINVAL; | |
3775 | ||
e8160e15 SH |
3776 | if (req.private_data_len) { |
3777 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
3778 | if (!private_data) | |
3779 | return -ENOMEM; | |
3780 | } else { | |
3781 | private_data = NULL; | |
3782 | } | |
e51060f0 SH |
3783 | |
3784 | if (conn_param->private_data && conn_param->private_data_len) | |
3785 | memcpy(private_data + offset, conn_param->private_data, | |
3786 | conn_param->private_data_len); | |
3787 | ||
0c9361fc JM |
3788 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
3789 | if (IS_ERR(id)) { | |
3790 | ret = PTR_ERR(id); | |
e51060f0 SH |
3791 | goto out; |
3792 | } | |
0c9361fc | 3793 | id_priv->cm_id.ib = id; |
e51060f0 SH |
3794 | |
3795 | route = &id_priv->id.route; | |
e8160e15 SH |
3796 | if (private_data) { |
3797 | ret = cma_format_hdr(private_data, id_priv); | |
3798 | if (ret) | |
3799 | goto out; | |
3800 | req.private_data = private_data; | |
3801 | } | |
e51060f0 SH |
3802 | |
3803 | req.primary_path = &route->path_rec[0]; | |
3804 | if (route->num_paths == 2) | |
3805 | req.alternate_path = &route->path_rec[1]; | |
3806 | ||
815d456e PP |
3807 | req.ppath_sgid_attr = id_priv->id.route.addr.dev_addr.sgid_attr; |
3808 | /* Alternate path SGID attribute currently unsupported */ | |
cf53936f | 3809 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
e51060f0 | 3810 | req.qp_num = id_priv->qp_num; |
18c441a6 | 3811 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
3812 | req.starting_psn = id_priv->seq_num; |
3813 | req.responder_resources = conn_param->responder_resources; | |
3814 | req.initiator_depth = conn_param->initiator_depth; | |
3815 | req.flow_control = conn_param->flow_control; | |
4ede178a SH |
3816 | req.retry_count = min_t(u8, 7, conn_param->retry_count); |
3817 | req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); | |
e51060f0 SH |
3818 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; |
3819 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
3820 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3821 | req.srq = id_priv->srq ? 1 : 0; | |
3822 | ||
3823 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
3824 | out: | |
0c9361fc JM |
3825 | if (ret && !IS_ERR(id)) { |
3826 | ib_destroy_cm_id(id); | |
675a027c KK |
3827 | id_priv->cm_id.ib = NULL; |
3828 | } | |
3829 | ||
e51060f0 SH |
3830 | kfree(private_data); |
3831 | return ret; | |
3832 | } | |
3833 | ||
07ebafba TT |
3834 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
3835 | struct rdma_conn_param *conn_param) | |
3836 | { | |
3837 | struct iw_cm_id *cm_id; | |
07ebafba TT |
3838 | int ret; |
3839 | struct iw_cm_conn_param iw_param; | |
3840 | ||
3841 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
3842 | if (IS_ERR(cm_id)) |
3843 | return PTR_ERR(cm_id); | |
07ebafba | 3844 | |
68cdba06 | 3845 | cm_id->tos = id_priv->tos; |
926ba19b | 3846 | cm_id->tos_set = id_priv->tos_set; |
07ebafba TT |
3847 | id_priv->cm_id.iw = cm_id; |
3848 | ||
24d44a39 SW |
3849 | memcpy(&cm_id->local_addr, cma_src_addr(id_priv), |
3850 | rdma_addr_size(cma_src_addr(id_priv))); | |
3851 | memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv), | |
3852 | rdma_addr_size(cma_dst_addr(id_priv))); | |
07ebafba | 3853 | |
5851bb89 | 3854 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
3855 | if (ret) |
3856 | goto out; | |
07ebafba | 3857 | |
f45ee80e HS |
3858 | if (conn_param) { |
3859 | iw_param.ord = conn_param->initiator_depth; | |
3860 | iw_param.ird = conn_param->responder_resources; | |
3861 | iw_param.private_data = conn_param->private_data; | |
3862 | iw_param.private_data_len = conn_param->private_data_len; | |
3863 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
3864 | } else { | |
3865 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 3866 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 3867 | } |
07ebafba TT |
3868 | ret = iw_cm_connect(cm_id, &iw_param); |
3869 | out: | |
0c9361fc | 3870 | if (ret) { |
675a027c KK |
3871 | iw_destroy_cm_id(cm_id); |
3872 | id_priv->cm_id.iw = NULL; | |
3873 | } | |
07ebafba TT |
3874 | return ret; |
3875 | } | |
3876 | ||
e51060f0 SH |
3877 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3878 | { | |
3879 | struct rdma_id_private *id_priv; | |
3880 | int ret; | |
3881 | ||
3882 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3883 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
3884 | return -EINVAL; |
3885 | ||
3886 | if (!id->qp) { | |
3887 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3888 | id_priv->srq = conn_param->srq; |
3889 | } | |
3890 | ||
72219cea | 3891 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3892 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
3893 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
3894 | else | |
3895 | ret = cma_connect_ib(id_priv, conn_param); | |
04215330 | 3896 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3897 | ret = cma_connect_iw(id_priv, conn_param); |
21655afc | 3898 | else |
e51060f0 | 3899 | ret = -ENOSYS; |
e51060f0 SH |
3900 | if (ret) |
3901 | goto err; | |
3902 | ||
3903 | return 0; | |
3904 | err: | |
550e5ca7 | 3905 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
3906 | return ret; |
3907 | } | |
3908 | EXPORT_SYMBOL(rdma_connect); | |
3909 | ||
3910 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
3911 | struct rdma_conn_param *conn_param) | |
3912 | { | |
3913 | struct ib_cm_rep_param rep; | |
5851bb89 | 3914 | int ret; |
0fe313b0 | 3915 | |
5851bb89 SH |
3916 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
3917 | if (ret) | |
3918 | goto out; | |
0fe313b0 | 3919 | |
5851bb89 SH |
3920 | ret = cma_modify_qp_rts(id_priv, conn_param); |
3921 | if (ret) | |
3922 | goto out; | |
e51060f0 SH |
3923 | |
3924 | memset(&rep, 0, sizeof rep); | |
3925 | rep.qp_num = id_priv->qp_num; | |
3926 | rep.starting_psn = id_priv->seq_num; | |
3927 | rep.private_data = conn_param->private_data; | |
3928 | rep.private_data_len = conn_param->private_data_len; | |
3929 | rep.responder_resources = conn_param->responder_resources; | |
3930 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
3931 | rep.failover_accepted = 0; |
3932 | rep.flow_control = conn_param->flow_control; | |
4ede178a | 3933 | rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); |
e51060f0 SH |
3934 | rep.srq = id_priv->srq ? 1 : 0; |
3935 | ||
0fe313b0 SH |
3936 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
3937 | out: | |
3938 | return ret; | |
e51060f0 SH |
3939 | } |
3940 | ||
07ebafba TT |
3941 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
3942 | struct rdma_conn_param *conn_param) | |
3943 | { | |
3944 | struct iw_cm_conn_param iw_param; | |
3945 | int ret; | |
3946 | ||
f2625f7d SW |
3947 | if (!conn_param) |
3948 | return -EINVAL; | |
3949 | ||
5851bb89 | 3950 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
3951 | if (ret) |
3952 | return ret; | |
3953 | ||
3954 | iw_param.ord = conn_param->initiator_depth; | |
3955 | iw_param.ird = conn_param->responder_resources; | |
3956 | iw_param.private_data = conn_param->private_data; | |
3957 | iw_param.private_data_len = conn_param->private_data_len; | |
3958 | if (id_priv->id.qp) { | |
3959 | iw_param.qpn = id_priv->qp_num; | |
3960 | } else | |
3961 | iw_param.qpn = conn_param->qp_num; | |
3962 | ||
3963 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
3964 | } | |
3965 | ||
628e5f6d | 3966 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
5c438135 | 3967 | enum ib_cm_sidr_status status, u32 qkey, |
628e5f6d SH |
3968 | const void *private_data, int private_data_len) |
3969 | { | |
3970 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 3971 | int ret; |
628e5f6d SH |
3972 | |
3973 | memset(&rep, 0, sizeof rep); | |
3974 | rep.status = status; | |
3975 | if (status == IB_SIDR_SUCCESS) { | |
5c438135 | 3976 | ret = cma_set_qkey(id_priv, qkey); |
d2ca39f2 YE |
3977 | if (ret) |
3978 | return ret; | |
628e5f6d | 3979 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 3980 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
3981 | } |
3982 | rep.private_data = private_data; | |
3983 | rep.private_data_len = private_data_len; | |
3984 | ||
3985 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
3986 | } | |
3987 | ||
00313983 SW |
3988 | int __rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param, |
3989 | const char *caller) | |
e51060f0 SH |
3990 | { |
3991 | struct rdma_id_private *id_priv; | |
3992 | int ret; | |
3993 | ||
3994 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d | 3995 | |
2165fc26 | 3996 | rdma_restrack_set_task(&id_priv->res, caller); |
83e9502d | 3997 | |
550e5ca7 | 3998 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
3999 | return -EINVAL; |
4000 | ||
4001 | if (!id->qp && conn_param) { | |
4002 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
4003 | id_priv->srq = conn_param->srq; |
4004 | } | |
4005 | ||
72219cea | 4006 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
f45ee80e HS |
4007 | if (id->qp_type == IB_QPT_UD) { |
4008 | if (conn_param) | |
4009 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 4010 | conn_param->qkey, |
f45ee80e HS |
4011 | conn_param->private_data, |
4012 | conn_param->private_data_len); | |
4013 | else | |
4014 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 4015 | 0, NULL, 0); |
f45ee80e HS |
4016 | } else { |
4017 | if (conn_param) | |
4018 | ret = cma_accept_ib(id_priv, conn_param); | |
4019 | else | |
4020 | ret = cma_rep_recv(id_priv); | |
4021 | } | |
04215330 | 4022 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 4023 | ret = cma_accept_iw(id_priv, conn_param); |
21655afc | 4024 | else |
e51060f0 | 4025 | ret = -ENOSYS; |
e51060f0 SH |
4026 | |
4027 | if (ret) | |
4028 | goto reject; | |
4029 | ||
4030 | return 0; | |
4031 | reject: | |
c5483388 | 4032 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
4033 | rdma_reject(id, NULL, 0); |
4034 | return ret; | |
4035 | } | |
00313983 | 4036 | EXPORT_SYMBOL(__rdma_accept); |
e51060f0 | 4037 | |
0fe313b0 SH |
4038 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
4039 | { | |
4040 | struct rdma_id_private *id_priv; | |
4041 | int ret; | |
4042 | ||
4043 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 4044 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
4045 | return -EINVAL; |
4046 | ||
4047 | switch (id->device->node_type) { | |
4048 | case RDMA_NODE_IB_CA: | |
4049 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
4050 | break; | |
4051 | default: | |
4052 | ret = 0; | |
4053 | break; | |
4054 | } | |
4055 | return ret; | |
4056 | } | |
4057 | EXPORT_SYMBOL(rdma_notify); | |
4058 | ||
e51060f0 SH |
4059 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
4060 | u8 private_data_len) | |
4061 | { | |
4062 | struct rdma_id_private *id_priv; | |
4063 | int ret; | |
4064 | ||
4065 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 4066 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
4067 | return -EINVAL; |
4068 | ||
72219cea | 4069 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 4070 | if (id->qp_type == IB_QPT_UD) |
5c438135 | 4071 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0, |
628e5f6d SH |
4072 | private_data, private_data_len); |
4073 | else | |
4074 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
4075 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
4076 | 0, private_data, private_data_len); | |
04215330 | 4077 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba TT |
4078 | ret = iw_cm_reject(id_priv->cm_id.iw, |
4079 | private_data, private_data_len); | |
21655afc | 4080 | } else |
e51060f0 | 4081 | ret = -ENOSYS; |
21655afc | 4082 | |
e51060f0 SH |
4083 | return ret; |
4084 | } | |
4085 | EXPORT_SYMBOL(rdma_reject); | |
4086 | ||
4087 | int rdma_disconnect(struct rdma_cm_id *id) | |
4088 | { | |
4089 | struct rdma_id_private *id_priv; | |
4090 | int ret; | |
4091 | ||
4092 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 4093 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
4094 | return -EINVAL; |
4095 | ||
72219cea | 4096 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
c5483388 | 4097 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
4098 | if (ret) |
4099 | goto out; | |
e51060f0 SH |
4100 | /* Initiate or respond to a disconnect. */ |
4101 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
4102 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
04215330 | 4103 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba | 4104 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); |
21655afc | 4105 | } else |
07ebafba | 4106 | ret = -EINVAL; |
21655afc | 4107 | |
e51060f0 SH |
4108 | out: |
4109 | return ret; | |
4110 | } | |
4111 | EXPORT_SYMBOL(rdma_disconnect); | |
4112 | ||
c8f6a362 SH |
4113 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
4114 | { | |
4115 | struct rdma_id_private *id_priv; | |
4116 | struct cma_multicast *mc = multicast->context; | |
7582df82 | 4117 | struct rdma_cm_event event = {}; |
37e07cda | 4118 | int ret = 0; |
c8f6a362 SH |
4119 | |
4120 | id_priv = mc->id_priv; | |
37e07cda BVA |
4121 | mutex_lock(&id_priv->handler_mutex); |
4122 | if (id_priv->state != RDMA_CM_ADDR_BOUND && | |
4123 | id_priv->state != RDMA_CM_ADDR_RESOLVED) | |
4124 | goto out; | |
c8f6a362 | 4125 | |
5c438135 SH |
4126 | if (!status) |
4127 | status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey)); | |
498683c6 MS |
4128 | else |
4129 | pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to join multicast. status %d\n", | |
4130 | status); | |
c5483388 | 4131 | mutex_lock(&id_priv->qp_mutex); |
498683c6 | 4132 | if (!status && id_priv->id.qp) { |
c8f6a362 | 4133 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, |
46ea5061 | 4134 | be16_to_cpu(multicast->rec.mlid)); |
a3dd3a48 | 4135 | if (status) |
498683c6 MS |
4136 | pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to attach QP. status %d\n", |
4137 | status); | |
4138 | } | |
c5483388 | 4139 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 | 4140 | |
c8f6a362 SH |
4141 | event.status = status; |
4142 | event.param.ud.private_data = mc->context; | |
4143 | if (!status) { | |
bee3c3c9 MS |
4144 | struct rdma_dev_addr *dev_addr = |
4145 | &id_priv->id.route.addr.dev_addr; | |
4146 | struct net_device *ndev = | |
052eac6e | 4147 | dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if); |
bee3c3c9 MS |
4148 | enum ib_gid_type gid_type = |
4149 | id_priv->cma_dev->default_gid_type[id_priv->id.port_num - | |
4150 | rdma_start_port(id_priv->cma_dev->device)]; | |
4151 | ||
c8f6a362 | 4152 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; |
6d337179 PP |
4153 | ret = ib_init_ah_from_mcmember(id_priv->id.device, |
4154 | id_priv->id.port_num, | |
4155 | &multicast->rec, | |
4156 | ndev, gid_type, | |
4157 | &event.param.ud.ah_attr); | |
4158 | if (ret) | |
4159 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
4160 | ||
c8f6a362 SH |
4161 | event.param.ud.qp_num = 0xFFFFFF; |
4162 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
bee3c3c9 MS |
4163 | if (ndev) |
4164 | dev_put(ndev); | |
c8f6a362 SH |
4165 | } else |
4166 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
4167 | ||
4168 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
f685c195 PP |
4169 | |
4170 | rdma_destroy_ah_attr(&event.param.ud.ah_attr); | |
c8f6a362 | 4171 | if (ret) { |
550e5ca7 | 4172 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 4173 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
4174 | rdma_destroy_id(&id_priv->id); |
4175 | return 0; | |
4176 | } | |
8aa08602 | 4177 | |
37e07cda | 4178 | out: |
de910bd9 | 4179 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
4180 | return 0; |
4181 | } | |
4182 | ||
4183 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
4184 | struct sockaddr *addr, union ib_gid *mgid) | |
4185 | { | |
4186 | unsigned char mc_map[MAX_ADDR_LEN]; | |
4187 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
4188 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
4189 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
4190 | ||
4191 | if (cma_any_addr(addr)) { | |
4192 | memset(mgid, 0, sizeof *mgid); | |
4193 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 4194 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
4195 | 0xFF10A01B)) { |
4196 | /* IPv6 address is an SA assigned MGID. */ | |
4197 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
5bc2b7b3 SH |
4198 | } else if (addr->sa_family == AF_IB) { |
4199 | memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid); | |
076dd53b | 4200 | } else if (addr->sa_family == AF_INET6) { |
e2e62697 JG |
4201 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); |
4202 | if (id_priv->id.ps == RDMA_PS_UDP) | |
4203 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
4204 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 4205 | } else { |
a9e527e3 | 4206 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
4207 | if (id_priv->id.ps == RDMA_PS_UDP) |
4208 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
4209 | *mgid = *(union ib_gid *) (mc_map + 4); |
4210 | } | |
4211 | } | |
4212 | ||
4213 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
4214 | struct cma_multicast *mc) | |
4215 | { | |
4216 | struct ib_sa_mcmember_rec rec; | |
4217 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
4218 | ib_sa_comp_mask comp_mask; | |
4219 | int ret; | |
4220 | ||
4221 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
4222 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
4223 | &rec.mgid, &rec); | |
4224 | if (ret) | |
4225 | return ret; | |
4226 | ||
5bc2b7b3 SH |
4227 | ret = cma_set_qkey(id_priv, 0); |
4228 | if (ret) | |
4229 | return ret; | |
4230 | ||
3f446754 | 4231 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
5bc2b7b3 | 4232 | rec.qkey = cpu_to_be32(id_priv->qkey); |
6f8372b6 | 4233 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 | 4234 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
ab15c95a AV |
4235 | rec.join_state = mc->join_state; |
4236 | ||
ee1c60b1 DC |
4237 | if ((rec.join_state == BIT(SENDONLY_FULLMEMBER_JOIN)) && |
4238 | (!ib_sa_sendonly_fullmem_support(&sa_client, | |
4239 | id_priv->id.device, | |
4240 | id_priv->id.port_num))) { | |
43c7c851 JG |
4241 | dev_warn( |
4242 | &id_priv->id.device->dev, | |
4243 | "RDMA CM: port %u Unable to multicast join: SM doesn't support Send Only Full Member option\n", | |
4244 | id_priv->id.port_num); | |
ee1c60b1 | 4245 | return -EOPNOTSUPP; |
ab15c95a | 4246 | } |
c8f6a362 SH |
4247 | |
4248 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
4249 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
4250 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
4251 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
4252 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
4253 | ||
84adeee9 YE |
4254 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
4255 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2a22fb8c DB |
4256 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
4257 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
4258 | IB_SA_MCMEMBER_REC_MTU | | |
4259 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
84adeee9 | 4260 | |
c8f6a362 SH |
4261 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
4262 | id_priv->id.port_num, &rec, | |
4263 | comp_mask, GFP_KERNEL, | |
4264 | cma_ib_mc_handler, mc); | |
8c6ffba0 | 4265 | return PTR_ERR_OR_ZERO(mc->multicast.ib); |
c8f6a362 SH |
4266 | } |
4267 | ||
3c86aa70 EC |
4268 | static void iboe_mcast_work_handler(struct work_struct *work) |
4269 | { | |
4270 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
4271 | struct cma_multicast *mc = mw->mc; | |
4272 | struct ib_sa_multicast *m = mc->multicast.ib; | |
4273 | ||
4274 | mc->multicast.ib->context = mc; | |
4275 | cma_ib_mc_handler(0, m); | |
4276 | kref_put(&mc->mcref, release_mc); | |
4277 | kfree(mw); | |
4278 | } | |
4279 | ||
be1d325a NO |
4280 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid, |
4281 | enum ib_gid_type gid_type) | |
3c86aa70 EC |
4282 | { |
4283 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
4284 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
4285 | ||
4286 | if (cma_any_addr(addr)) { | |
4287 | memset(mgid, 0, sizeof *mgid); | |
4288 | } else if (addr->sa_family == AF_INET6) { | |
4289 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
4290 | } else { | |
5c181bda PP |
4291 | mgid->raw[0] = |
4292 | (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? 0 : 0xff; | |
4293 | mgid->raw[1] = | |
4294 | (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? 0 : 0x0e; | |
3c86aa70 EC |
4295 | mgid->raw[2] = 0; |
4296 | mgid->raw[3] = 0; | |
4297 | mgid->raw[4] = 0; | |
4298 | mgid->raw[5] = 0; | |
4299 | mgid->raw[6] = 0; | |
4300 | mgid->raw[7] = 0; | |
4301 | mgid->raw[8] = 0; | |
4302 | mgid->raw[9] = 0; | |
4303 | mgid->raw[10] = 0xff; | |
4304 | mgid->raw[11] = 0xff; | |
4305 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
4306 | } | |
4307 | } | |
4308 | ||
4309 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
4310 | struct cma_multicast *mc) | |
4311 | { | |
4312 | struct iboe_mcast_work *work; | |
4313 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
bee3c3c9 | 4314 | int err = 0; |
3c86aa70 EC |
4315 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; |
4316 | struct net_device *ndev = NULL; | |
bee3c3c9 | 4317 | enum ib_gid_type gid_type; |
ab15c95a AV |
4318 | bool send_only; |
4319 | ||
4320 | send_only = mc->join_state == BIT(SENDONLY_FULLMEMBER_JOIN); | |
3c86aa70 EC |
4321 | |
4322 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
4323 | return -EINVAL; | |
4324 | ||
4325 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
4326 | if (!work) | |
4327 | return -ENOMEM; | |
4328 | ||
4329 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
4330 | if (!mc->multicast.ib) { | |
4331 | err = -ENOMEM; | |
4332 | goto out1; | |
4333 | } | |
4334 | ||
be1d325a NO |
4335 | gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num - |
4336 | rdma_start_port(id_priv->cma_dev->device)]; | |
4337 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid, gid_type); | |
3c86aa70 EC |
4338 | |
4339 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
4340 | if (id_priv->id.ps == RDMA_PS_UDP) | |
4341 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
4342 | ||
4343 | if (dev_addr->bound_dev_if) | |
052eac6e | 4344 | ndev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if); |
3c86aa70 EC |
4345 | if (!ndev) { |
4346 | err = -ENODEV; | |
4347 | goto out2; | |
4348 | } | |
4349 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
4350 | mc->multicast.ib->rec.hop_limit = 1; | |
4351 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
bee3c3c9 | 4352 | |
bee3c3c9 | 4353 | if (addr->sa_family == AF_INET) { |
c65f6c5a AV |
4354 | if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { |
4355 | mc->multicast.ib->rec.hop_limit = IPV6_DEFAULT_HOPLIMIT; | |
ab15c95a AV |
4356 | if (!send_only) { |
4357 | err = cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid, | |
4358 | true); | |
ab15c95a | 4359 | } |
bee3c3c9 MS |
4360 | } |
4361 | } else { | |
4362 | if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) | |
4363 | err = -ENOTSUPP; | |
4364 | } | |
3c86aa70 | 4365 | dev_put(ndev); |
bee3c3c9 MS |
4366 | if (err || !mc->multicast.ib->rec.mtu) { |
4367 | if (!err) | |
4368 | err = -EINVAL; | |
3c86aa70 EC |
4369 | goto out2; |
4370 | } | |
7b85627b MS |
4371 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
4372 | &mc->multicast.ib->rec.port_gid); | |
3c86aa70 EC |
4373 | work->id = id_priv; |
4374 | work->mc = mc; | |
4375 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
4376 | kref_get(&mc->mcref); | |
4377 | queue_work(cma_wq, &work->work); | |
4378 | ||
4379 | return 0; | |
4380 | ||
4381 | out2: | |
4382 | kfree(mc->multicast.ib); | |
4383 | out1: | |
4384 | kfree(work); | |
4385 | return err; | |
4386 | } | |
4387 | ||
c8f6a362 | 4388 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
ab15c95a | 4389 | u8 join_state, void *context) |
c8f6a362 SH |
4390 | { |
4391 | struct rdma_id_private *id_priv; | |
4392 | struct cma_multicast *mc; | |
4393 | int ret; | |
4394 | ||
7688f2c3 LR |
4395 | if (!id->device) |
4396 | return -EINVAL; | |
4397 | ||
c8f6a362 | 4398 | id_priv = container_of(id, struct rdma_id_private, id); |
550e5ca7 NM |
4399 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
4400 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
4401 | return -EINVAL; |
4402 | ||
4403 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
4404 | if (!mc) | |
4405 | return -ENOMEM; | |
4406 | ||
ef560861 | 4407 | memcpy(&mc->addr, addr, rdma_addr_size(addr)); |
c8f6a362 SH |
4408 | mc->context = context; |
4409 | mc->id_priv = id_priv; | |
ab15c95a | 4410 | mc->join_state = join_state; |
c8f6a362 | 4411 | |
5d9fb044 | 4412 | if (rdma_protocol_roce(id->device, id->port_num)) { |
5c9a5282 MW |
4413 | kref_init(&mc->mcref); |
4414 | ret = cma_iboe_join_multicast(id_priv, mc); | |
c0126915 JG |
4415 | if (ret) |
4416 | goto out_err; | |
4417 | } else if (rdma_cap_ib_mcast(id->device, id->port_num)) { | |
5c9a5282 | 4418 | ret = cma_join_ib_multicast(id_priv, mc); |
c0126915 JG |
4419 | if (ret) |
4420 | goto out_err; | |
4421 | } else { | |
c8f6a362 | 4422 | ret = -ENOSYS; |
c0126915 | 4423 | goto out_err; |
c8f6a362 | 4424 | } |
c0126915 JG |
4425 | |
4426 | spin_lock(&id_priv->lock); | |
4427 | list_add(&mc->list, &id_priv->mc_list); | |
4428 | spin_unlock(&id_priv->lock); | |
4429 | ||
4430 | return 0; | |
4431 | out_err: | |
4432 | kfree(mc); | |
c8f6a362 SH |
4433 | return ret; |
4434 | } | |
4435 | EXPORT_SYMBOL(rdma_join_multicast); | |
4436 | ||
4437 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
4438 | { | |
4439 | struct rdma_id_private *id_priv; | |
4440 | struct cma_multicast *mc; | |
4441 | ||
4442 | id_priv = container_of(id, struct rdma_id_private, id); | |
4443 | spin_lock_irq(&id_priv->lock); | |
4444 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
ef560861 | 4445 | if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) { |
c8f6a362 SH |
4446 | list_del(&mc->list); |
4447 | spin_unlock_irq(&id_priv->lock); | |
4448 | ||
4449 | if (id->qp) | |
4450 | ib_detach_mcast(id->qp, | |
4451 | &mc->multicast.ib->rec.mgid, | |
46ea5061 | 4452 | be16_to_cpu(mc->multicast.ib->rec.mlid)); |
5c9a5282 MW |
4453 | |
4454 | BUG_ON(id_priv->cma_dev->device != id->device); | |
4455 | ||
a31ad3b0 | 4456 | if (rdma_cap_ib_mcast(id->device, id->port_num)) { |
5c9a5282 MW |
4457 | ib_sa_free_multicast(mc->multicast.ib); |
4458 | kfree(mc); | |
bee3c3c9 | 4459 | } else if (rdma_protocol_roce(id->device, id->port_num)) { |
88145678 | 4460 | cma_leave_roce_mc_group(id_priv, mc); |
bee3c3c9 | 4461 | } |
c8f6a362 SH |
4462 | return; |
4463 | } | |
4464 | } | |
4465 | spin_unlock_irq(&id_priv->lock); | |
4466 | } | |
4467 | EXPORT_SYMBOL(rdma_leave_multicast); | |
4468 | ||
dd5bdff8 OG |
4469 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
4470 | { | |
4471 | struct rdma_dev_addr *dev_addr; | |
4472 | struct cma_ndev_work *work; | |
4473 | ||
4474 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
4475 | ||
6266ed6e | 4476 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
fa20105e | 4477 | (net_eq(dev_net(ndev), dev_addr->net)) && |
dd5bdff8 | 4478 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
aba25a3e PP |
4479 | pr_info("RDMA CM addr change for ndev %s used by id %p\n", |
4480 | ndev->name, &id_priv->id); | |
dd5bdff8 OG |
4481 | work = kzalloc(sizeof *work, GFP_KERNEL); |
4482 | if (!work) | |
4483 | return -ENOMEM; | |
4484 | ||
4485 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
4486 | work->id = id_priv; | |
4487 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
4488 | atomic_inc(&id_priv->refcount); | |
4489 | queue_work(cma_wq, &work->work); | |
4490 | } | |
4491 | ||
4492 | return 0; | |
4493 | } | |
4494 | ||
4495 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
351638e7 | 4496 | void *ptr) |
dd5bdff8 | 4497 | { |
351638e7 | 4498 | struct net_device *ndev = netdev_notifier_info_to_dev(ptr); |
dd5bdff8 OG |
4499 | struct cma_device *cma_dev; |
4500 | struct rdma_id_private *id_priv; | |
4501 | int ret = NOTIFY_DONE; | |
4502 | ||
dd5bdff8 OG |
4503 | if (event != NETDEV_BONDING_FAILOVER) |
4504 | return NOTIFY_DONE; | |
4505 | ||
3cd96fdd | 4506 | if (!netif_is_bond_master(ndev)) |
dd5bdff8 OG |
4507 | return NOTIFY_DONE; |
4508 | ||
4509 | mutex_lock(&lock); | |
4510 | list_for_each_entry(cma_dev, &dev_list, list) | |
4511 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
4512 | ret = cma_netdev_change(ndev, id_priv); | |
4513 | if (ret) | |
4514 | goto out; | |
4515 | } | |
4516 | ||
4517 | out: | |
4518 | mutex_unlock(&lock); | |
4519 | return ret; | |
4520 | } | |
4521 | ||
4522 | static struct notifier_block cma_nb = { | |
4523 | .notifier_call = cma_netdev_callback | |
4524 | }; | |
4525 | ||
e51060f0 SH |
4526 | static void cma_add_one(struct ib_device *device) |
4527 | { | |
4528 | struct cma_device *cma_dev; | |
4529 | struct rdma_id_private *id_priv; | |
045959db MB |
4530 | unsigned int i; |
4531 | unsigned long supported_gids = 0; | |
e51060f0 SH |
4532 | |
4533 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
4534 | if (!cma_dev) | |
4535 | return; | |
4536 | ||
4537 | cma_dev->device = device; | |
045959db MB |
4538 | cma_dev->default_gid_type = kcalloc(device->phys_port_cnt, |
4539 | sizeof(*cma_dev->default_gid_type), | |
4540 | GFP_KERNEL); | |
89052d78 MD |
4541 | if (!cma_dev->default_gid_type) |
4542 | goto free_cma_dev; | |
4543 | ||
4544 | cma_dev->default_roce_tos = kcalloc(device->phys_port_cnt, | |
4545 | sizeof(*cma_dev->default_roce_tos), | |
4546 | GFP_KERNEL); | |
4547 | if (!cma_dev->default_roce_tos) | |
4548 | goto free_gid_type; | |
4549 | ||
ea1075ed | 4550 | rdma_for_each_port (device, i) { |
045959db MB |
4551 | supported_gids = roce_gid_type_mask_support(device, i); |
4552 | WARN_ON(!supported_gids); | |
5ab2d89b | 4553 | if (supported_gids & (1 << CMA_PREFERRED_ROCE_GID_TYPE)) |
63a5f483 MS |
4554 | cma_dev->default_gid_type[i - rdma_start_port(device)] = |
4555 | CMA_PREFERRED_ROCE_GID_TYPE; | |
4556 | else | |
4557 | cma_dev->default_gid_type[i - rdma_start_port(device)] = | |
4558 | find_first_bit(&supported_gids, BITS_PER_LONG); | |
89052d78 | 4559 | cma_dev->default_roce_tos[i - rdma_start_port(device)] = 0; |
045959db | 4560 | } |
e51060f0 SH |
4561 | |
4562 | init_completion(&cma_dev->comp); | |
4563 | atomic_set(&cma_dev->refcount, 1); | |
4564 | INIT_LIST_HEAD(&cma_dev->id_list); | |
4565 | ib_set_client_data(device, &cma_client, cma_dev); | |
4566 | ||
4567 | mutex_lock(&lock); | |
4568 | list_add_tail(&cma_dev->list, &dev_list); | |
4569 | list_for_each_entry(id_priv, &listen_any_list, list) | |
4570 | cma_listen_on_dev(id_priv, cma_dev); | |
4571 | mutex_unlock(&lock); | |
89052d78 MD |
4572 | |
4573 | return; | |
4574 | ||
4575 | free_gid_type: | |
4576 | kfree(cma_dev->default_gid_type); | |
4577 | ||
4578 | free_cma_dev: | |
4579 | kfree(cma_dev); | |
4580 | ||
4581 | return; | |
e51060f0 SH |
4582 | } |
4583 | ||
4584 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
4585 | { | |
7582df82 | 4586 | struct rdma_cm_event event = {}; |
550e5ca7 | 4587 | enum rdma_cm_state state; |
de910bd9 | 4588 | int ret = 0; |
e51060f0 SH |
4589 | |
4590 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
4591 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
4592 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
4593 | return 0; |
4594 | ||
4595 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 4596 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
4597 | |
4598 | /* Check for destruction from another callback. */ | |
550e5ca7 | 4599 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 4600 | goto out; |
e51060f0 | 4601 | |
a1b1b61f | 4602 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; |
de910bd9 OG |
4603 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
4604 | out: | |
4605 | mutex_unlock(&id_priv->handler_mutex); | |
4606 | return ret; | |
e51060f0 SH |
4607 | } |
4608 | ||
4609 | static void cma_process_remove(struct cma_device *cma_dev) | |
4610 | { | |
e51060f0 SH |
4611 | struct rdma_id_private *id_priv; |
4612 | int ret; | |
4613 | ||
e51060f0 SH |
4614 | mutex_lock(&lock); |
4615 | while (!list_empty(&cma_dev->id_list)) { | |
4616 | id_priv = list_entry(cma_dev->id_list.next, | |
4617 | struct rdma_id_private, list); | |
4618 | ||
d02d1f53 | 4619 | list_del(&id_priv->listen_list); |
94de178a | 4620 | list_del_init(&id_priv->list); |
e51060f0 SH |
4621 | atomic_inc(&id_priv->refcount); |
4622 | mutex_unlock(&lock); | |
4623 | ||
d02d1f53 | 4624 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
4625 | cma_deref_id(id_priv); |
4626 | if (ret) | |
4627 | rdma_destroy_id(&id_priv->id); | |
4628 | ||
4629 | mutex_lock(&lock); | |
4630 | } | |
4631 | mutex_unlock(&lock); | |
4632 | ||
4633 | cma_deref_dev(cma_dev); | |
4634 | wait_for_completion(&cma_dev->comp); | |
4635 | } | |
4636 | ||
7c1eb45a | 4637 | static void cma_remove_one(struct ib_device *device, void *client_data) |
e51060f0 | 4638 | { |
7c1eb45a | 4639 | struct cma_device *cma_dev = client_data; |
e51060f0 | 4640 | |
e51060f0 SH |
4641 | if (!cma_dev) |
4642 | return; | |
4643 | ||
4644 | mutex_lock(&lock); | |
4645 | list_del(&cma_dev->list); | |
4646 | mutex_unlock(&lock); | |
4647 | ||
4648 | cma_process_remove(cma_dev); | |
89052d78 | 4649 | kfree(cma_dev->default_roce_tos); |
045959db | 4650 | kfree(cma_dev->default_gid_type); |
e51060f0 SH |
4651 | kfree(cma_dev); |
4652 | } | |
4653 | ||
4be74b42 HE |
4654 | static int cma_init_net(struct net *net) |
4655 | { | |
4656 | struct cma_pernet *pernet = cma_pernet(net); | |
4657 | ||
4658 | idr_init(&pernet->tcp_ps); | |
4659 | idr_init(&pernet->udp_ps); | |
4660 | idr_init(&pernet->ipoib_ps); | |
4661 | idr_init(&pernet->ib_ps); | |
4662 | ||
4663 | return 0; | |
4664 | } | |
4665 | ||
4666 | static void cma_exit_net(struct net *net) | |
4667 | { | |
4668 | struct cma_pernet *pernet = cma_pernet(net); | |
4669 | ||
4670 | idr_destroy(&pernet->tcp_ps); | |
4671 | idr_destroy(&pernet->udp_ps); | |
4672 | idr_destroy(&pernet->ipoib_ps); | |
4673 | idr_destroy(&pernet->ib_ps); | |
4674 | } | |
4675 | ||
4676 | static struct pernet_operations cma_pernet_operations = { | |
4677 | .init = cma_init_net, | |
4678 | .exit = cma_exit_net, | |
4679 | .id = &cma_pernet_id, | |
4680 | .size = sizeof(struct cma_pernet), | |
4681 | }; | |
4682 | ||
716abb1f | 4683 | static int __init cma_init(void) |
e51060f0 | 4684 | { |
5d7220e8 | 4685 | int ret; |
227b60f5 | 4686 | |
dee9acbb | 4687 | cma_wq = alloc_ordered_workqueue("rdma_cm", WQ_MEM_RECLAIM); |
e51060f0 SH |
4688 | if (!cma_wq) |
4689 | return -ENOMEM; | |
4690 | ||
4be74b42 HE |
4691 | ret = register_pernet_subsys(&cma_pernet_operations); |
4692 | if (ret) | |
4693 | goto err_wq; | |
4694 | ||
c1a0b23b | 4695 | ib_sa_register_client(&sa_client); |
dd5bdff8 | 4696 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 4697 | |
e51060f0 SH |
4698 | ret = ib_register_client(&cma_client); |
4699 | if (ret) | |
4700 | goto err; | |
753f618a | 4701 | |
045959db | 4702 | cma_configfs_init(); |
753f618a | 4703 | |
e51060f0 SH |
4704 | return 0; |
4705 | ||
4706 | err: | |
dd5bdff8 | 4707 | unregister_netdevice_notifier(&cma_nb); |
c1a0b23b | 4708 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4709 | err_wq: |
e51060f0 SH |
4710 | destroy_workqueue(cma_wq); |
4711 | return ret; | |
4712 | } | |
4713 | ||
716abb1f | 4714 | static void __exit cma_cleanup(void) |
e51060f0 | 4715 | { |
045959db | 4716 | cma_configfs_exit(); |
e51060f0 | 4717 | ib_unregister_client(&cma_client); |
dd5bdff8 | 4718 | unregister_netdevice_notifier(&cma_nb); |
c1a0b23b | 4719 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4720 | unregister_pernet_subsys(&cma_pernet_operations); |
e51060f0 | 4721 | destroy_workqueue(cma_wq); |
e51060f0 SH |
4722 | } |
4723 | ||
4724 | module_init(cma_init); | |
4725 | module_exit(cma_cleanup); |