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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 MB |
64 | #include "core_priv.h" |
65 | ||
e51060f0 SH |
66 | MODULE_AUTHOR("Sean Hefty"); |
67 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
68 | MODULE_LICENSE("Dual BSD/GPL"); | |
69 | ||
70 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
ab15c95a | 71 | #define CMA_QUERY_CLASSPORT_INFO_TIMEOUT 3000 |
d5bb7599 | 72 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 73 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 74 | #define CMA_IBOE_PACKET_LIFETIME 18 |
e51060f0 | 75 | |
2b1b5b60 SG |
76 | static const char * const cma_events[] = { |
77 | [RDMA_CM_EVENT_ADDR_RESOLVED] = "address resolved", | |
78 | [RDMA_CM_EVENT_ADDR_ERROR] = "address error", | |
79 | [RDMA_CM_EVENT_ROUTE_RESOLVED] = "route resolved ", | |
80 | [RDMA_CM_EVENT_ROUTE_ERROR] = "route error", | |
81 | [RDMA_CM_EVENT_CONNECT_REQUEST] = "connect request", | |
82 | [RDMA_CM_EVENT_CONNECT_RESPONSE] = "connect response", | |
83 | [RDMA_CM_EVENT_CONNECT_ERROR] = "connect error", | |
84 | [RDMA_CM_EVENT_UNREACHABLE] = "unreachable", | |
85 | [RDMA_CM_EVENT_REJECTED] = "rejected", | |
86 | [RDMA_CM_EVENT_ESTABLISHED] = "established", | |
87 | [RDMA_CM_EVENT_DISCONNECTED] = "disconnected", | |
88 | [RDMA_CM_EVENT_DEVICE_REMOVAL] = "device removal", | |
89 | [RDMA_CM_EVENT_MULTICAST_JOIN] = "multicast join", | |
90 | [RDMA_CM_EVENT_MULTICAST_ERROR] = "multicast error", | |
91 | [RDMA_CM_EVENT_ADDR_CHANGE] = "address change", | |
92 | [RDMA_CM_EVENT_TIMEWAIT_EXIT] = "timewait exit", | |
93 | }; | |
94 | ||
db7489e0 | 95 | const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event) |
2b1b5b60 SG |
96 | { |
97 | size_t index = event; | |
98 | ||
99 | return (index < ARRAY_SIZE(cma_events) && cma_events[index]) ? | |
100 | cma_events[index] : "unrecognized event"; | |
101 | } | |
102 | EXPORT_SYMBOL(rdma_event_msg); | |
103 | ||
e51060f0 | 104 | static void cma_add_one(struct ib_device *device); |
7c1eb45a | 105 | static void cma_remove_one(struct ib_device *device, void *client_data); |
e51060f0 SH |
106 | |
107 | static struct ib_client cma_client = { | |
108 | .name = "cma", | |
109 | .add = cma_add_one, | |
110 | .remove = cma_remove_one | |
111 | }; | |
112 | ||
c1a0b23b | 113 | static struct ib_sa_client sa_client; |
7a118df3 | 114 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
115 | static LIST_HEAD(dev_list); |
116 | static LIST_HEAD(listen_any_list); | |
117 | static DEFINE_MUTEX(lock); | |
118 | static struct workqueue_struct *cma_wq; | |
4be74b42 | 119 | static int cma_pernet_id; |
e51060f0 | 120 | |
4be74b42 HE |
121 | struct cma_pernet { |
122 | struct idr tcp_ps; | |
123 | struct idr udp_ps; | |
124 | struct idr ipoib_ps; | |
125 | struct idr ib_ps; | |
126 | }; | |
127 | ||
128 | static struct cma_pernet *cma_pernet(struct net *net) | |
129 | { | |
130 | return net_generic(net, cma_pernet_id); | |
131 | } | |
132 | ||
133 | static struct idr *cma_pernet_idr(struct net *net, enum rdma_port_space ps) | |
aac978e1 | 134 | { |
4be74b42 HE |
135 | struct cma_pernet *pernet = cma_pernet(net); |
136 | ||
aac978e1 HE |
137 | switch (ps) { |
138 | case RDMA_PS_TCP: | |
4be74b42 | 139 | return &pernet->tcp_ps; |
aac978e1 | 140 | case RDMA_PS_UDP: |
4be74b42 | 141 | return &pernet->udp_ps; |
aac978e1 | 142 | case RDMA_PS_IPOIB: |
4be74b42 | 143 | return &pernet->ipoib_ps; |
aac978e1 | 144 | case RDMA_PS_IB: |
4be74b42 | 145 | return &pernet->ib_ps; |
aac978e1 HE |
146 | default: |
147 | return NULL; | |
148 | } | |
149 | } | |
150 | ||
e51060f0 SH |
151 | struct cma_device { |
152 | struct list_head list; | |
153 | struct ib_device *device; | |
e51060f0 SH |
154 | struct completion comp; |
155 | atomic_t refcount; | |
156 | struct list_head id_list; | |
045959db | 157 | enum ib_gid_type *default_gid_type; |
e51060f0 SH |
158 | }; |
159 | ||
e51060f0 | 160 | struct rdma_bind_list { |
aac978e1 | 161 | enum rdma_port_space ps; |
e51060f0 SH |
162 | struct hlist_head owners; |
163 | unsigned short port; | |
164 | }; | |
165 | ||
ab15c95a AV |
166 | struct class_port_info_context { |
167 | struct ib_class_port_info *class_port_info; | |
168 | struct ib_device *device; | |
169 | struct completion done; | |
170 | struct ib_sa_query *sa_query; | |
171 | u8 port_num; | |
172 | }; | |
173 | ||
4be74b42 | 174 | static int cma_ps_alloc(struct net *net, enum rdma_port_space ps, |
aac978e1 HE |
175 | struct rdma_bind_list *bind_list, int snum) |
176 | { | |
4be74b42 | 177 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
178 | |
179 | return idr_alloc(idr, bind_list, snum, snum + 1, GFP_KERNEL); | |
180 | } | |
181 | ||
4be74b42 HE |
182 | static struct rdma_bind_list *cma_ps_find(struct net *net, |
183 | enum rdma_port_space ps, int snum) | |
aac978e1 | 184 | { |
4be74b42 | 185 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
186 | |
187 | return idr_find(idr, snum); | |
188 | } | |
189 | ||
4be74b42 | 190 | static void cma_ps_remove(struct net *net, enum rdma_port_space ps, int snum) |
aac978e1 | 191 | { |
4be74b42 | 192 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
193 | |
194 | idr_remove(idr, snum); | |
195 | } | |
196 | ||
68602120 SH |
197 | enum { |
198 | CMA_OPTION_AFONLY, | |
199 | }; | |
200 | ||
218a773f MB |
201 | void cma_ref_dev(struct cma_device *cma_dev) |
202 | { | |
203 | atomic_inc(&cma_dev->refcount); | |
204 | } | |
205 | ||
045959db MB |
206 | struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter, |
207 | void *cookie) | |
208 | { | |
209 | struct cma_device *cma_dev; | |
210 | struct cma_device *found_cma_dev = NULL; | |
211 | ||
212 | mutex_lock(&lock); | |
213 | ||
214 | list_for_each_entry(cma_dev, &dev_list, list) | |
215 | if (filter(cma_dev->device, cookie)) { | |
216 | found_cma_dev = cma_dev; | |
217 | break; | |
218 | } | |
219 | ||
220 | if (found_cma_dev) | |
221 | cma_ref_dev(found_cma_dev); | |
222 | mutex_unlock(&lock); | |
223 | return found_cma_dev; | |
224 | } | |
225 | ||
226 | int cma_get_default_gid_type(struct cma_device *cma_dev, | |
227 | unsigned int port) | |
228 | { | |
229 | if (port < rdma_start_port(cma_dev->device) || | |
230 | port > rdma_end_port(cma_dev->device)) | |
231 | return -EINVAL; | |
232 | ||
233 | return cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)]; | |
234 | } | |
235 | ||
236 | int cma_set_default_gid_type(struct cma_device *cma_dev, | |
237 | unsigned int port, | |
238 | enum ib_gid_type default_gid_type) | |
239 | { | |
240 | unsigned long supported_gids; | |
241 | ||
242 | if (port < rdma_start_port(cma_dev->device) || | |
243 | port > rdma_end_port(cma_dev->device)) | |
244 | return -EINVAL; | |
245 | ||
246 | supported_gids = roce_gid_type_mask_support(cma_dev->device, port); | |
247 | ||
248 | if (!(supported_gids & 1 << default_gid_type)) | |
249 | return -EINVAL; | |
250 | ||
251 | cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)] = | |
252 | default_gid_type; | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | struct ib_device *cma_get_ib_dev(struct cma_device *cma_dev) | |
258 | { | |
259 | return cma_dev->device; | |
260 | } | |
261 | ||
e51060f0 SH |
262 | /* |
263 | * Device removal can occur at anytime, so we need extra handling to | |
264 | * serialize notifying the user of device removal with other callbacks. | |
265 | * We do this by disabling removal notification while a callback is in process, | |
266 | * and reporting it after the callback completes. | |
267 | */ | |
268 | struct rdma_id_private { | |
269 | struct rdma_cm_id id; | |
270 | ||
271 | struct rdma_bind_list *bind_list; | |
272 | struct hlist_node node; | |
d02d1f53 SH |
273 | struct list_head list; /* listen_any_list or cma_device.list */ |
274 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 275 | struct cma_device *cma_dev; |
c8f6a362 | 276 | struct list_head mc_list; |
e51060f0 | 277 | |
d02d1f53 | 278 | int internal_id; |
550e5ca7 | 279 | enum rdma_cm_state state; |
e51060f0 | 280 | spinlock_t lock; |
c5483388 SH |
281 | struct mutex qp_mutex; |
282 | ||
e51060f0 SH |
283 | struct completion comp; |
284 | atomic_t refcount; | |
de910bd9 | 285 | struct mutex handler_mutex; |
e51060f0 SH |
286 | |
287 | int backlog; | |
288 | int timeout_ms; | |
289 | struct ib_sa_query *query; | |
290 | int query_id; | |
291 | union { | |
292 | struct ib_cm_id *ib; | |
07ebafba | 293 | struct iw_cm_id *iw; |
e51060f0 SH |
294 | } cm_id; |
295 | ||
296 | u32 seq_num; | |
c8f6a362 | 297 | u32 qkey; |
e51060f0 | 298 | u32 qp_num; |
83e9502d | 299 | pid_t owner; |
68602120 | 300 | u32 options; |
e51060f0 | 301 | u8 srq; |
a81c994d | 302 | u8 tos; |
a9bb7912 | 303 | u8 reuseaddr; |
5b0ec991 | 304 | u8 afonly; |
cb57bb84 | 305 | enum ib_gid_type gid_type; |
e51060f0 SH |
306 | }; |
307 | ||
c8f6a362 SH |
308 | struct cma_multicast { |
309 | struct rdma_id_private *id_priv; | |
310 | union { | |
311 | struct ib_sa_multicast *ib; | |
312 | } multicast; | |
313 | struct list_head list; | |
314 | void *context; | |
3f446754 | 315 | struct sockaddr_storage addr; |
3c86aa70 | 316 | struct kref mcref; |
bee3c3c9 | 317 | bool igmp_joined; |
ab15c95a | 318 | u8 join_state; |
c8f6a362 SH |
319 | }; |
320 | ||
e51060f0 SH |
321 | struct cma_work { |
322 | struct work_struct work; | |
323 | struct rdma_id_private *id; | |
550e5ca7 NM |
324 | enum rdma_cm_state old_state; |
325 | enum rdma_cm_state new_state; | |
e51060f0 SH |
326 | struct rdma_cm_event event; |
327 | }; | |
328 | ||
dd5bdff8 OG |
329 | struct cma_ndev_work { |
330 | struct work_struct work; | |
331 | struct rdma_id_private *id; | |
332 | struct rdma_cm_event event; | |
333 | }; | |
334 | ||
3c86aa70 EC |
335 | struct iboe_mcast_work { |
336 | struct work_struct work; | |
337 | struct rdma_id_private *id; | |
338 | struct cma_multicast *mc; | |
339 | }; | |
340 | ||
e51060f0 SH |
341 | union cma_ip_addr { |
342 | struct in6_addr ip6; | |
343 | struct { | |
1b90c137 AV |
344 | __be32 pad[3]; |
345 | __be32 addr; | |
e51060f0 SH |
346 | } ip4; |
347 | }; | |
348 | ||
349 | struct cma_hdr { | |
350 | u8 cma_version; | |
351 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 352 | __be16 port; |
e51060f0 SH |
353 | union cma_ip_addr src_addr; |
354 | union cma_ip_addr dst_addr; | |
355 | }; | |
356 | ||
e51060f0 | 357 | #define CMA_VERSION 0x00 |
e51060f0 | 358 | |
4c21b5bc HE |
359 | struct cma_req_info { |
360 | struct ib_device *device; | |
361 | int port; | |
362 | union ib_gid local_gid; | |
363 | __be64 service_id; | |
364 | u16 pkey; | |
365 | bool has_gid:1; | |
366 | }; | |
367 | ||
550e5ca7 | 368 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
369 | { |
370 | unsigned long flags; | |
371 | int ret; | |
372 | ||
373 | spin_lock_irqsave(&id_priv->lock, flags); | |
374 | ret = (id_priv->state == comp); | |
375 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
376 | return ret; | |
377 | } | |
378 | ||
379 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 380 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
381 | { |
382 | unsigned long flags; | |
383 | int ret; | |
384 | ||
385 | spin_lock_irqsave(&id_priv->lock, flags); | |
386 | if ((ret = (id_priv->state == comp))) | |
387 | id_priv->state = exch; | |
388 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
389 | return ret; | |
390 | } | |
391 | ||
550e5ca7 NM |
392 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
393 | enum rdma_cm_state exch) | |
e51060f0 SH |
394 | { |
395 | unsigned long flags; | |
550e5ca7 | 396 | enum rdma_cm_state old; |
e51060f0 SH |
397 | |
398 | spin_lock_irqsave(&id_priv->lock, flags); | |
399 | old = id_priv->state; | |
400 | id_priv->state = exch; | |
401 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
402 | return old; | |
403 | } | |
404 | ||
4c21b5bc | 405 | static inline u8 cma_get_ip_ver(const struct cma_hdr *hdr) |
e51060f0 SH |
406 | { |
407 | return hdr->ip_version >> 4; | |
408 | } | |
409 | ||
410 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
411 | { | |
412 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
413 | } | |
414 | ||
bee3c3c9 | 415 | static int cma_igmp_send(struct net_device *ndev, union ib_gid *mgid, bool join) |
e51060f0 | 416 | { |
bee3c3c9 MS |
417 | struct in_device *in_dev = NULL; |
418 | ||
419 | if (ndev) { | |
420 | rtnl_lock(); | |
421 | in_dev = __in_dev_get_rtnl(ndev); | |
422 | if (in_dev) { | |
423 | if (join) | |
424 | ip_mc_inc_group(in_dev, | |
425 | *(__be32 *)(mgid->raw + 12)); | |
426 | else | |
427 | ip_mc_dec_group(in_dev, | |
428 | *(__be32 *)(mgid->raw + 12)); | |
429 | } | |
430 | rtnl_unlock(); | |
431 | } | |
432 | return (in_dev) ? 0 : -ENODEV; | |
433 | } | |
434 | ||
045959db MB |
435 | static void _cma_attach_to_dev(struct rdma_id_private *id_priv, |
436 | struct cma_device *cma_dev) | |
e51060f0 | 437 | { |
218a773f | 438 | cma_ref_dev(cma_dev); |
e51060f0 | 439 | id_priv->cma_dev = cma_dev; |
045959db | 440 | id_priv->gid_type = 0; |
e51060f0 | 441 | id_priv->id.device = cma_dev->device; |
3c86aa70 EC |
442 | id_priv->id.route.addr.dev_addr.transport = |
443 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 SH |
444 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
445 | } | |
446 | ||
045959db MB |
447 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
448 | struct cma_device *cma_dev) | |
449 | { | |
450 | _cma_attach_to_dev(id_priv, cma_dev); | |
451 | id_priv->gid_type = | |
452 | cma_dev->default_gid_type[id_priv->id.port_num - | |
453 | rdma_start_port(cma_dev->device)]; | |
454 | } | |
455 | ||
218a773f | 456 | void cma_deref_dev(struct cma_device *cma_dev) |
e51060f0 SH |
457 | { |
458 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
459 | complete(&cma_dev->comp); | |
460 | } | |
461 | ||
3c86aa70 EC |
462 | static inline void release_mc(struct kref *kref) |
463 | { | |
464 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
465 | ||
466 | kfree(mc->multicast.ib); | |
467 | kfree(mc); | |
468 | } | |
469 | ||
a396d43a | 470 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 471 | { |
a396d43a | 472 | mutex_lock(&lock); |
e51060f0 SH |
473 | list_del(&id_priv->list); |
474 | cma_deref_dev(id_priv->cma_dev); | |
475 | id_priv->cma_dev = NULL; | |
a396d43a | 476 | mutex_unlock(&lock); |
e51060f0 SH |
477 | } |
478 | ||
f4753834 SH |
479 | static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv) |
480 | { | |
481 | return (struct sockaddr *) &id_priv->id.route.addr.src_addr; | |
482 | } | |
483 | ||
484 | static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv) | |
485 | { | |
486 | return (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
487 | } | |
488 | ||
489 | static inline unsigned short cma_family(struct rdma_id_private *id_priv) | |
490 | { | |
491 | return id_priv->id.route.addr.src_addr.ss_family; | |
492 | } | |
493 | ||
5c438135 | 494 | static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey) |
c8f6a362 SH |
495 | { |
496 | struct ib_sa_mcmember_rec rec; | |
497 | int ret = 0; | |
498 | ||
5c438135 SH |
499 | if (id_priv->qkey) { |
500 | if (qkey && id_priv->qkey != qkey) | |
501 | return -EINVAL; | |
d2ca39f2 | 502 | return 0; |
5c438135 SH |
503 | } |
504 | ||
505 | if (qkey) { | |
506 | id_priv->qkey = qkey; | |
507 | return 0; | |
508 | } | |
d2ca39f2 YE |
509 | |
510 | switch (id_priv->id.ps) { | |
c8f6a362 | 511 | case RDMA_PS_UDP: |
5c438135 | 512 | case RDMA_PS_IB: |
d2ca39f2 | 513 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
514 | break; |
515 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
516 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
517 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
518 | id_priv->id.port_num, &rec.mgid, | |
519 | &rec); | |
520 | if (!ret) | |
521 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
522 | break; |
523 | default: | |
524 | break; | |
525 | } | |
526 | return ret; | |
527 | } | |
528 | ||
680f920a SH |
529 | static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr) |
530 | { | |
531 | dev_addr->dev_type = ARPHRD_INFINIBAND; | |
532 | rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr); | |
533 | ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey)); | |
534 | } | |
535 | ||
536 | static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) | |
537 | { | |
538 | int ret; | |
539 | ||
540 | if (addr->sa_family != AF_IB) { | |
dd5f03be | 541 | ret = rdma_translate_ip(addr, dev_addr, NULL); |
680f920a SH |
542 | } else { |
543 | cma_translate_ib((struct sockaddr_ib *) addr, dev_addr); | |
544 | ret = 0; | |
545 | } | |
546 | ||
547 | return ret; | |
548 | } | |
549 | ||
7c11147d | 550 | static inline int cma_validate_port(struct ib_device *device, u8 port, |
045959db | 551 | enum ib_gid_type gid_type, |
abae1b71 MB |
552 | union ib_gid *gid, int dev_type, |
553 | int bound_if_index) | |
7c11147d | 554 | { |
7c11147d | 555 | int ret = -ENODEV; |
abae1b71 | 556 | struct net_device *ndev = NULL; |
7c11147d MW |
557 | |
558 | if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port)) | |
559 | return ret; | |
560 | ||
561 | if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port)) | |
562 | return ret; | |
563 | ||
64936773 | 564 | if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) { |
abae1b71 | 565 | ndev = dev_get_by_index(&init_net, bound_if_index); |
20029832 MB |
566 | if (ndev && ndev->flags & IFF_LOOPBACK) { |
567 | pr_info("detected loopback device\n"); | |
568 | dev_put(ndev); | |
abae1b71 | 569 | |
20029832 MB |
570 | if (!device->get_netdev) |
571 | return -EOPNOTSUPP; | |
572 | ||
573 | ndev = device->get_netdev(device, port); | |
574 | if (!ndev) | |
575 | return -ENODEV; | |
576 | } | |
045959db MB |
577 | } else { |
578 | gid_type = IB_GID_TYPE_IB; | |
20029832 | 579 | } |
abae1b71 | 580 | |
045959db | 581 | ret = ib_find_cached_gid_by_port(device, gid, gid_type, port, |
b39ffa1d | 582 | ndev, NULL); |
abae1b71 MB |
583 | |
584 | if (ndev) | |
585 | dev_put(ndev); | |
7c11147d MW |
586 | |
587 | return ret; | |
588 | } | |
589 | ||
be9130cc DL |
590 | static int cma_acquire_dev(struct rdma_id_private *id_priv, |
591 | struct rdma_id_private *listen_id_priv) | |
e51060f0 | 592 | { |
c8f6a362 | 593 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 594 | struct cma_device *cma_dev; |
7c11147d | 595 | union ib_gid gid, iboe_gid, *gidp; |
e51060f0 | 596 | int ret = -ENODEV; |
7c11147d | 597 | u8 port; |
e51060f0 | 598 | |
7c11147d | 599 | if (dev_addr->dev_type != ARPHRD_INFINIBAND && |
2efdd6a0 MS |
600 | id_priv->id.ps == RDMA_PS_IPOIB) |
601 | return -EINVAL; | |
602 | ||
a396d43a | 603 | mutex_lock(&lock); |
7b85627b MS |
604 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
605 | &iboe_gid); | |
606 | ||
3c86aa70 EC |
607 | memcpy(&gid, dev_addr->src_dev_addr + |
608 | rdma_addr_gid_offset(dev_addr), sizeof gid); | |
7c11147d MW |
609 | |
610 | if (listen_id_priv) { | |
be9130cc DL |
611 | cma_dev = listen_id_priv->cma_dev; |
612 | port = listen_id_priv->id.port_num; | |
5d9fb044 | 613 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
7c11147d | 614 | &iboe_gid : &gid; |
be9130cc | 615 | |
045959db MB |
616 | ret = cma_validate_port(cma_dev->device, port, |
617 | rdma_protocol_ib(cma_dev->device, port) ? | |
618 | IB_GID_TYPE_IB : | |
619 | listen_id_priv->gid_type, gidp, | |
abae1b71 MB |
620 | dev_addr->dev_type, |
621 | dev_addr->bound_dev_if); | |
7c11147d MW |
622 | if (!ret) { |
623 | id_priv->id.port_num = port; | |
be9130cc DL |
624 | goto out; |
625 | } | |
626 | } | |
7c11147d | 627 | |
e51060f0 | 628 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 | 629 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
be9130cc DL |
630 | if (listen_id_priv && |
631 | listen_id_priv->cma_dev == cma_dev && | |
632 | listen_id_priv->id.port_num == port) | |
633 | continue; | |
7c11147d | 634 | |
5d9fb044 | 635 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
7c11147d MW |
636 | &iboe_gid : &gid; |
637 | ||
045959db MB |
638 | ret = cma_validate_port(cma_dev->device, port, |
639 | rdma_protocol_ib(cma_dev->device, port) ? | |
640 | IB_GID_TYPE_IB : | |
641 | cma_dev->default_gid_type[port - 1], | |
642 | gidp, dev_addr->dev_type, | |
abae1b71 | 643 | dev_addr->bound_dev_if); |
7c11147d MW |
644 | if (!ret) { |
645 | id_priv->id.port_num = port; | |
646 | goto out; | |
3c86aa70 | 647 | } |
e51060f0 SH |
648 | } |
649 | } | |
3c86aa70 EC |
650 | |
651 | out: | |
652 | if (!ret) | |
653 | cma_attach_to_dev(id_priv, cma_dev); | |
654 | ||
a396d43a | 655 | mutex_unlock(&lock); |
e51060f0 SH |
656 | return ret; |
657 | } | |
658 | ||
f17df3b0 SH |
659 | /* |
660 | * Select the source IB device and address to reach the destination IB address. | |
661 | */ | |
662 | static int cma_resolve_ib_dev(struct rdma_id_private *id_priv) | |
663 | { | |
664 | struct cma_device *cma_dev, *cur_dev; | |
665 | struct sockaddr_ib *addr; | |
666 | union ib_gid gid, sgid, *dgid; | |
667 | u16 pkey, index; | |
8fb488d7 | 668 | u8 p; |
f17df3b0 SH |
669 | int i; |
670 | ||
671 | cma_dev = NULL; | |
672 | addr = (struct sockaddr_ib *) cma_dst_addr(id_priv); | |
673 | dgid = (union ib_gid *) &addr->sib_addr; | |
674 | pkey = ntohs(addr->sib_pkey); | |
675 | ||
676 | list_for_each_entry(cur_dev, &dev_list, list) { | |
f17df3b0 | 677 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { |
30a74ef4 | 678 | if (!rdma_cap_af_ib(cur_dev->device, p)) |
fef60902 MW |
679 | continue; |
680 | ||
f17df3b0 SH |
681 | if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index)) |
682 | continue; | |
683 | ||
55ee3ab2 MB |
684 | for (i = 0; !ib_get_cached_gid(cur_dev->device, p, i, |
685 | &gid, NULL); | |
686 | i++) { | |
f17df3b0 SH |
687 | if (!memcmp(&gid, dgid, sizeof(gid))) { |
688 | cma_dev = cur_dev; | |
689 | sgid = gid; | |
8fb488d7 | 690 | id_priv->id.port_num = p; |
f17df3b0 SH |
691 | goto found; |
692 | } | |
693 | ||
694 | if (!cma_dev && (gid.global.subnet_prefix == | |
695 | dgid->global.subnet_prefix)) { | |
696 | cma_dev = cur_dev; | |
697 | sgid = gid; | |
8fb488d7 | 698 | id_priv->id.port_num = p; |
f17df3b0 SH |
699 | } |
700 | } | |
701 | } | |
702 | } | |
703 | ||
704 | if (!cma_dev) | |
705 | return -ENODEV; | |
706 | ||
707 | found: | |
708 | cma_attach_to_dev(id_priv, cma_dev); | |
f17df3b0 SH |
709 | addr = (struct sockaddr_ib *) cma_src_addr(id_priv); |
710 | memcpy(&addr->sib_addr, &sgid, sizeof sgid); | |
711 | cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr); | |
712 | return 0; | |
713 | } | |
714 | ||
e51060f0 SH |
715 | static void cma_deref_id(struct rdma_id_private *id_priv) |
716 | { | |
717 | if (atomic_dec_and_test(&id_priv->refcount)) | |
718 | complete(&id_priv->comp); | |
719 | } | |
720 | ||
fa20105e GS |
721 | struct rdma_cm_id *rdma_create_id(struct net *net, |
722 | rdma_cm_event_handler event_handler, | |
b26f9b99 SH |
723 | void *context, enum rdma_port_space ps, |
724 | enum ib_qp_type qp_type) | |
e51060f0 SH |
725 | { |
726 | struct rdma_id_private *id_priv; | |
727 | ||
728 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
729 | if (!id_priv) | |
730 | return ERR_PTR(-ENOMEM); | |
731 | ||
83e9502d | 732 | id_priv->owner = task_pid_nr(current); |
550e5ca7 | 733 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
734 | id_priv->id.context = context; |
735 | id_priv->id.event_handler = event_handler; | |
736 | id_priv->id.ps = ps; | |
b26f9b99 | 737 | id_priv->id.qp_type = qp_type; |
e51060f0 | 738 | spin_lock_init(&id_priv->lock); |
c5483388 | 739 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
740 | init_completion(&id_priv->comp); |
741 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 742 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 743 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 744 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 | 745 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
fa20105e | 746 | id_priv->id.route.addr.dev_addr.net = get_net(net); |
e51060f0 SH |
747 | |
748 | return &id_priv->id; | |
749 | } | |
750 | EXPORT_SYMBOL(rdma_create_id); | |
751 | ||
c8f6a362 | 752 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
753 | { |
754 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 755 | int qp_attr_mask, ret; |
e51060f0 | 756 | |
c8f6a362 SH |
757 | qp_attr.qp_state = IB_QPS_INIT; |
758 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
759 | if (ret) |
760 | return ret; | |
761 | ||
c8f6a362 SH |
762 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
763 | if (ret) | |
764 | return ret; | |
765 | ||
766 | qp_attr.qp_state = IB_QPS_RTR; | |
767 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
768 | if (ret) | |
769 | return ret; | |
770 | ||
771 | qp_attr.qp_state = IB_QPS_RTS; | |
772 | qp_attr.sq_psn = 0; | |
773 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
774 | ||
775 | return ret; | |
e51060f0 SH |
776 | } |
777 | ||
c8f6a362 | 778 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
779 | { |
780 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 781 | int qp_attr_mask, ret; |
07ebafba TT |
782 | |
783 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
784 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
785 | if (ret) | |
786 | return ret; | |
07ebafba | 787 | |
c8f6a362 | 788 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
789 | } |
790 | ||
e51060f0 SH |
791 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
792 | struct ib_qp_init_attr *qp_init_attr) | |
793 | { | |
794 | struct rdma_id_private *id_priv; | |
795 | struct ib_qp *qp; | |
796 | int ret; | |
797 | ||
798 | id_priv = container_of(id, struct rdma_id_private, id); | |
799 | if (id->device != pd->device) | |
800 | return -EINVAL; | |
801 | ||
0691a286 | 802 | qp_init_attr->port_num = id->port_num; |
e51060f0 SH |
803 | qp = ib_create_qp(pd, qp_init_attr); |
804 | if (IS_ERR(qp)) | |
805 | return PTR_ERR(qp); | |
806 | ||
b26f9b99 | 807 | if (id->qp_type == IB_QPT_UD) |
c8f6a362 SH |
808 | ret = cma_init_ud_qp(id_priv, qp); |
809 | else | |
810 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
811 | if (ret) |
812 | goto err; | |
813 | ||
814 | id->qp = qp; | |
815 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
816 | id_priv->srq = (qp->srq != NULL); |
817 | return 0; | |
818 | err: | |
819 | ib_destroy_qp(qp); | |
820 | return ret; | |
821 | } | |
822 | EXPORT_SYMBOL(rdma_create_qp); | |
823 | ||
824 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
825 | { | |
c5483388 SH |
826 | struct rdma_id_private *id_priv; |
827 | ||
828 | id_priv = container_of(id, struct rdma_id_private, id); | |
829 | mutex_lock(&id_priv->qp_mutex); | |
830 | ib_destroy_qp(id_priv->id.qp); | |
831 | id_priv->id.qp = NULL; | |
832 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
833 | } |
834 | EXPORT_SYMBOL(rdma_destroy_qp); | |
835 | ||
5851bb89 SH |
836 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
837 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
838 | { |
839 | struct ib_qp_attr qp_attr; | |
840 | int qp_attr_mask, ret; | |
dd5f03be | 841 | union ib_gid sgid; |
e51060f0 | 842 | |
c5483388 SH |
843 | mutex_lock(&id_priv->qp_mutex); |
844 | if (!id_priv->id.qp) { | |
845 | ret = 0; | |
846 | goto out; | |
847 | } | |
e51060f0 SH |
848 | |
849 | /* Need to update QP attributes from default values. */ | |
850 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 851 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 852 | if (ret) |
c5483388 | 853 | goto out; |
e51060f0 | 854 | |
c5483388 | 855 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 856 | if (ret) |
c5483388 | 857 | goto out; |
e51060f0 SH |
858 | |
859 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 860 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 861 | if (ret) |
c5483388 | 862 | goto out; |
e51060f0 | 863 | |
dd5f03be | 864 | ret = ib_query_gid(id_priv->id.device, id_priv->id.port_num, |
55ee3ab2 | 865 | qp_attr.ah_attr.grh.sgid_index, &sgid, NULL); |
dd5f03be MB |
866 | if (ret) |
867 | goto out; | |
868 | ||
fef60902 MW |
869 | BUG_ON(id_priv->cma_dev->device != id_priv->id.device); |
870 | ||
5851bb89 SH |
871 | if (conn_param) |
872 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
873 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
874 | out: | |
875 | mutex_unlock(&id_priv->qp_mutex); | |
876 | return ret; | |
e51060f0 SH |
877 | } |
878 | ||
5851bb89 SH |
879 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
880 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
881 | { |
882 | struct ib_qp_attr qp_attr; | |
883 | int qp_attr_mask, ret; | |
884 | ||
c5483388 SH |
885 | mutex_lock(&id_priv->qp_mutex); |
886 | if (!id_priv->id.qp) { | |
887 | ret = 0; | |
888 | goto out; | |
889 | } | |
e51060f0 SH |
890 | |
891 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 892 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 893 | if (ret) |
c5483388 | 894 | goto out; |
e51060f0 | 895 | |
5851bb89 SH |
896 | if (conn_param) |
897 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
898 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
899 | out: | |
900 | mutex_unlock(&id_priv->qp_mutex); | |
901 | return ret; | |
e51060f0 SH |
902 | } |
903 | ||
c5483388 | 904 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
905 | { |
906 | struct ib_qp_attr qp_attr; | |
c5483388 | 907 | int ret; |
e51060f0 | 908 | |
c5483388 SH |
909 | mutex_lock(&id_priv->qp_mutex); |
910 | if (!id_priv->id.qp) { | |
911 | ret = 0; | |
912 | goto out; | |
913 | } | |
e51060f0 SH |
914 | |
915 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
916 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
917 | out: | |
918 | mutex_unlock(&id_priv->qp_mutex); | |
919 | return ret; | |
e51060f0 SH |
920 | } |
921 | ||
c8f6a362 SH |
922 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
923 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
924 | { | |
925 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
926 | int ret; | |
3c86aa70 EC |
927 | u16 pkey; |
928 | ||
227128fc | 929 | if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num)) |
3c86aa70 | 930 | pkey = 0xffff; |
fef60902 MW |
931 | else |
932 | pkey = ib_addr_get_pkey(dev_addr); | |
c8f6a362 SH |
933 | |
934 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
3c86aa70 | 935 | pkey, &qp_attr->pkey_index); |
c8f6a362 SH |
936 | if (ret) |
937 | return ret; | |
938 | ||
939 | qp_attr->port_num = id_priv->id.port_num; | |
940 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
941 | ||
b26f9b99 | 942 | if (id_priv->id.qp_type == IB_QPT_UD) { |
5c438135 | 943 | ret = cma_set_qkey(id_priv, 0); |
d2ca39f2 YE |
944 | if (ret) |
945 | return ret; | |
946 | ||
c8f6a362 SH |
947 | qp_attr->qkey = id_priv->qkey; |
948 | *qp_attr_mask |= IB_QP_QKEY; | |
949 | } else { | |
950 | qp_attr->qp_access_flags = 0; | |
951 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
952 | } | |
953 | return 0; | |
954 | } | |
955 | ||
e51060f0 SH |
956 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
957 | int *qp_attr_mask) | |
958 | { | |
959 | struct rdma_id_private *id_priv; | |
c8f6a362 | 960 | int ret = 0; |
e51060f0 SH |
961 | |
962 | id_priv = container_of(id, struct rdma_id_private, id); | |
72219cea | 963 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 964 | if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) |
c8f6a362 SH |
965 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); |
966 | else | |
967 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
968 | qp_attr_mask); | |
dd5f03be | 969 | |
e51060f0 SH |
970 | if (qp_attr->qp_state == IB_QPS_RTR) |
971 | qp_attr->rq_psn = id_priv->seq_num; | |
04215330 | 972 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
c8f6a362 | 973 | if (!id_priv->cm_id.iw) { |
8f076531 | 974 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
975 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
976 | } else | |
977 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
978 | qp_attr_mask); | |
21655afc | 979 | } else |
e51060f0 | 980 | ret = -ENOSYS; |
e51060f0 SH |
981 | |
982 | return ret; | |
983 | } | |
984 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
985 | ||
986 | static inline int cma_zero_addr(struct sockaddr *addr) | |
987 | { | |
2e2d190c SH |
988 | switch (addr->sa_family) { |
989 | case AF_INET: | |
990 | return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
991 | case AF_INET6: | |
992 | return ipv6_addr_any(&((struct sockaddr_in6 *) addr)->sin6_addr); | |
993 | case AF_IB: | |
994 | return ib_addr_any(&((struct sockaddr_ib *) addr)->sib_addr); | |
995 | default: | |
996 | return 0; | |
e51060f0 SH |
997 | } |
998 | } | |
999 | ||
1000 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
1001 | { | |
2e2d190c SH |
1002 | switch (addr->sa_family) { |
1003 | case AF_INET: | |
1004 | return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr); | |
1005 | case AF_INET6: | |
1006 | return ipv6_addr_loopback(&((struct sockaddr_in6 *) addr)->sin6_addr); | |
1007 | case AF_IB: | |
1008 | return ib_addr_loopback(&((struct sockaddr_ib *) addr)->sib_addr); | |
1009 | default: | |
1010 | return 0; | |
1011 | } | |
e51060f0 SH |
1012 | } |
1013 | ||
1014 | static inline int cma_any_addr(struct sockaddr *addr) | |
1015 | { | |
1016 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
1017 | } | |
1018 | ||
43b752da HS |
1019 | static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) |
1020 | { | |
1021 | if (src->sa_family != dst->sa_family) | |
1022 | return -1; | |
1023 | ||
1024 | switch (src->sa_family) { | |
1025 | case AF_INET: | |
1026 | return ((struct sockaddr_in *) src)->sin_addr.s_addr != | |
1027 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
2e2d190c | 1028 | case AF_INET6: |
43b752da HS |
1029 | return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, |
1030 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
2e2d190c SH |
1031 | default: |
1032 | return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr, | |
1033 | &((struct sockaddr_ib *) dst)->sib_addr); | |
43b752da HS |
1034 | } |
1035 | } | |
1036 | ||
58afdcb7 | 1037 | static __be16 cma_port(struct sockaddr *addr) |
628e5f6d | 1038 | { |
58afdcb7 SH |
1039 | struct sockaddr_ib *sib; |
1040 | ||
1041 | switch (addr->sa_family) { | |
1042 | case AF_INET: | |
628e5f6d | 1043 | return ((struct sockaddr_in *) addr)->sin_port; |
58afdcb7 | 1044 | case AF_INET6: |
628e5f6d | 1045 | return ((struct sockaddr_in6 *) addr)->sin6_port; |
58afdcb7 SH |
1046 | case AF_IB: |
1047 | sib = (struct sockaddr_ib *) addr; | |
1048 | return htons((u16) (be64_to_cpu(sib->sib_sid) & | |
1049 | be64_to_cpu(sib->sib_sid_mask))); | |
1050 | default: | |
1051 | return 0; | |
1052 | } | |
628e5f6d SH |
1053 | } |
1054 | ||
e51060f0 SH |
1055 | static inline int cma_any_port(struct sockaddr *addr) |
1056 | { | |
628e5f6d | 1057 | return !cma_port(addr); |
e51060f0 SH |
1058 | } |
1059 | ||
0c505f70 HE |
1060 | static void cma_save_ib_info(struct sockaddr *src_addr, |
1061 | struct sockaddr *dst_addr, | |
1062 | struct rdma_cm_id *listen_id, | |
fbaa1a6d | 1063 | struct ib_sa_path_rec *path) |
e51060f0 | 1064 | { |
fbaa1a6d SH |
1065 | struct sockaddr_ib *listen_ib, *ib; |
1066 | ||
1067 | listen_ib = (struct sockaddr_ib *) &listen_id->route.addr.src_addr; | |
0c505f70 HE |
1068 | if (src_addr) { |
1069 | ib = (struct sockaddr_ib *)src_addr; | |
1070 | ib->sib_family = AF_IB; | |
1071 | if (path) { | |
1072 | ib->sib_pkey = path->pkey; | |
1073 | ib->sib_flowinfo = path->flow_label; | |
1074 | memcpy(&ib->sib_addr, &path->sgid, 16); | |
1075 | ib->sib_sid = path->service_id; | |
1076 | ib->sib_scope_id = 0; | |
1077 | } else { | |
1078 | ib->sib_pkey = listen_ib->sib_pkey; | |
1079 | ib->sib_flowinfo = listen_ib->sib_flowinfo; | |
1080 | ib->sib_addr = listen_ib->sib_addr; | |
1081 | ib->sib_sid = listen_ib->sib_sid; | |
1082 | ib->sib_scope_id = listen_ib->sib_scope_id; | |
1083 | } | |
1084 | ib->sib_sid_mask = cpu_to_be64(0xffffffffffffffffULL); | |
c07678bb | 1085 | } |
0c505f70 HE |
1086 | if (dst_addr) { |
1087 | ib = (struct sockaddr_ib *)dst_addr; | |
1088 | ib->sib_family = AF_IB; | |
1089 | if (path) { | |
1090 | ib->sib_pkey = path->pkey; | |
1091 | ib->sib_flowinfo = path->flow_label; | |
1092 | memcpy(&ib->sib_addr, &path->dgid, 16); | |
1093 | } | |
c07678bb | 1094 | } |
fbaa1a6d | 1095 | } |
e51060f0 | 1096 | |
0c505f70 HE |
1097 | static void cma_save_ip4_info(struct sockaddr *src_addr, |
1098 | struct sockaddr *dst_addr, | |
1099 | struct cma_hdr *hdr, | |
1100 | __be16 local_port) | |
fbaa1a6d | 1101 | { |
28521440 | 1102 | struct sockaddr_in *ip4; |
e51060f0 | 1103 | |
0c505f70 HE |
1104 | if (src_addr) { |
1105 | ip4 = (struct sockaddr_in *)src_addr; | |
1106 | ip4->sin_family = AF_INET; | |
1107 | ip4->sin_addr.s_addr = hdr->dst_addr.ip4.addr; | |
1108 | ip4->sin_port = local_port; | |
1109 | } | |
fbaa1a6d | 1110 | |
0c505f70 HE |
1111 | if (dst_addr) { |
1112 | ip4 = (struct sockaddr_in *)dst_addr; | |
1113 | ip4->sin_family = AF_INET; | |
1114 | ip4->sin_addr.s_addr = hdr->src_addr.ip4.addr; | |
1115 | ip4->sin_port = hdr->port; | |
1116 | } | |
e51060f0 SH |
1117 | } |
1118 | ||
0c505f70 HE |
1119 | static void cma_save_ip6_info(struct sockaddr *src_addr, |
1120 | struct sockaddr *dst_addr, | |
1121 | struct cma_hdr *hdr, | |
1122 | __be16 local_port) | |
e51060f0 | 1123 | { |
28521440 | 1124 | struct sockaddr_in6 *ip6; |
e51060f0 | 1125 | |
0c505f70 HE |
1126 | if (src_addr) { |
1127 | ip6 = (struct sockaddr_in6 *)src_addr; | |
1128 | ip6->sin6_family = AF_INET6; | |
1129 | ip6->sin6_addr = hdr->dst_addr.ip6; | |
1130 | ip6->sin6_port = local_port; | |
1131 | } | |
fbaa1a6d | 1132 | |
0c505f70 HE |
1133 | if (dst_addr) { |
1134 | ip6 = (struct sockaddr_in6 *)dst_addr; | |
1135 | ip6->sin6_family = AF_INET6; | |
1136 | ip6->sin6_addr = hdr->src_addr.ip6; | |
1137 | ip6->sin6_port = hdr->port; | |
1138 | } | |
fbaa1a6d SH |
1139 | } |
1140 | ||
0c505f70 | 1141 | static u16 cma_port_from_service_id(__be64 service_id) |
fbaa1a6d | 1142 | { |
0c505f70 HE |
1143 | return (u16)be64_to_cpu(service_id); |
1144 | } | |
fbaa1a6d | 1145 | |
0c505f70 HE |
1146 | static int cma_save_ip_info(struct sockaddr *src_addr, |
1147 | struct sockaddr *dst_addr, | |
1148 | struct ib_cm_event *ib_event, | |
1149 | __be64 service_id) | |
1150 | { | |
1151 | struct cma_hdr *hdr; | |
1152 | __be16 port; | |
fbaa1a6d SH |
1153 | |
1154 | hdr = ib_event->private_data; | |
1155 | if (hdr->cma_version != CMA_VERSION) | |
1156 | return -EINVAL; | |
1157 | ||
0c505f70 HE |
1158 | port = htons(cma_port_from_service_id(service_id)); |
1159 | ||
fbaa1a6d | 1160 | switch (cma_get_ip_ver(hdr)) { |
e51060f0 | 1161 | case 4: |
0c505f70 | 1162 | cma_save_ip4_info(src_addr, dst_addr, hdr, port); |
e51060f0 SH |
1163 | break; |
1164 | case 6: | |
0c505f70 | 1165 | cma_save_ip6_info(src_addr, dst_addr, hdr, port); |
e51060f0 SH |
1166 | break; |
1167 | default: | |
4c21b5bc | 1168 | return -EAFNOSUPPORT; |
e51060f0 | 1169 | } |
0c505f70 | 1170 | |
fbaa1a6d | 1171 | return 0; |
e51060f0 SH |
1172 | } |
1173 | ||
0c505f70 HE |
1174 | static int cma_save_net_info(struct sockaddr *src_addr, |
1175 | struct sockaddr *dst_addr, | |
1176 | struct rdma_cm_id *listen_id, | |
1177 | struct ib_cm_event *ib_event, | |
1178 | sa_family_t sa_family, __be64 service_id) | |
1179 | { | |
1180 | if (sa_family == AF_IB) { | |
1181 | if (ib_event->event == IB_CM_REQ_RECEIVED) | |
1182 | cma_save_ib_info(src_addr, dst_addr, listen_id, | |
1183 | ib_event->param.req_rcvd.primary_path); | |
1184 | else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) | |
1185 | cma_save_ib_info(src_addr, dst_addr, listen_id, NULL); | |
1186 | return 0; | |
1187 | } | |
1188 | ||
1189 | return cma_save_ip_info(src_addr, dst_addr, ib_event, service_id); | |
1190 | } | |
1191 | ||
4c21b5bc HE |
1192 | static int cma_save_req_info(const struct ib_cm_event *ib_event, |
1193 | struct cma_req_info *req) | |
1194 | { | |
1195 | const struct ib_cm_req_event_param *req_param = | |
1196 | &ib_event->param.req_rcvd; | |
1197 | const struct ib_cm_sidr_req_event_param *sidr_param = | |
1198 | &ib_event->param.sidr_req_rcvd; | |
1199 | ||
1200 | switch (ib_event->event) { | |
1201 | case IB_CM_REQ_RECEIVED: | |
1202 | req->device = req_param->listen_id->device; | |
1203 | req->port = req_param->port; | |
1204 | memcpy(&req->local_gid, &req_param->primary_path->sgid, | |
1205 | sizeof(req->local_gid)); | |
1206 | req->has_gid = true; | |
1207 | req->service_id = req_param->primary_path->service_id; | |
ab3964ad | 1208 | req->pkey = be16_to_cpu(req_param->primary_path->pkey); |
84424a7f HE |
1209 | if (req->pkey != req_param->bth_pkey) |
1210 | pr_warn_ratelimited("RDMA CMA: got different BTH P_Key (0x%x) and primary path P_Key (0x%x)\n" | |
1211 | "RDMA CMA: in the future this may cause the request to be dropped\n", | |
1212 | req_param->bth_pkey, req->pkey); | |
4c21b5bc HE |
1213 | break; |
1214 | case IB_CM_SIDR_REQ_RECEIVED: | |
1215 | req->device = sidr_param->listen_id->device; | |
1216 | req->port = sidr_param->port; | |
1217 | req->has_gid = false; | |
1218 | req->service_id = sidr_param->service_id; | |
ab3964ad | 1219 | req->pkey = sidr_param->pkey; |
84424a7f HE |
1220 | if (req->pkey != sidr_param->bth_pkey) |
1221 | pr_warn_ratelimited("RDMA CMA: got different BTH P_Key (0x%x) and SIDR request payload P_Key (0x%x)\n" | |
1222 | "RDMA CMA: in the future this may cause the request to be dropped\n", | |
1223 | sidr_param->bth_pkey, req->pkey); | |
4c21b5bc HE |
1224 | break; |
1225 | default: | |
1226 | return -EINVAL; | |
1227 | } | |
1228 | ||
1229 | return 0; | |
1230 | } | |
1231 | ||
f887f2ac HE |
1232 | static bool validate_ipv4_net_dev(struct net_device *net_dev, |
1233 | const struct sockaddr_in *dst_addr, | |
1234 | const struct sockaddr_in *src_addr) | |
1235 | { | |
1236 | __be32 daddr = dst_addr->sin_addr.s_addr, | |
1237 | saddr = src_addr->sin_addr.s_addr; | |
1238 | struct fib_result res; | |
1239 | struct flowi4 fl4; | |
1240 | int err; | |
1241 | bool ret; | |
1242 | ||
1243 | if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) || | |
1244 | ipv4_is_lbcast(daddr) || ipv4_is_zeronet(saddr) || | |
1245 | ipv4_is_zeronet(daddr) || ipv4_is_loopback(daddr) || | |
1246 | ipv4_is_loopback(saddr)) | |
1247 | return false; | |
1248 | ||
1249 | memset(&fl4, 0, sizeof(fl4)); | |
1250 | fl4.flowi4_iif = net_dev->ifindex; | |
1251 | fl4.daddr = daddr; | |
1252 | fl4.saddr = saddr; | |
1253 | ||
1254 | rcu_read_lock(); | |
1255 | err = fib_lookup(dev_net(net_dev), &fl4, &res, 0); | |
d3632493 | 1256 | ret = err == 0 && FIB_RES_DEV(res) == net_dev; |
f887f2ac HE |
1257 | rcu_read_unlock(); |
1258 | ||
1259 | return ret; | |
1260 | } | |
1261 | ||
1262 | static bool validate_ipv6_net_dev(struct net_device *net_dev, | |
1263 | const struct sockaddr_in6 *dst_addr, | |
1264 | const struct sockaddr_in6 *src_addr) | |
1265 | { | |
1266 | #if IS_ENABLED(CONFIG_IPV6) | |
1267 | const int strict = ipv6_addr_type(&dst_addr->sin6_addr) & | |
1268 | IPV6_ADDR_LINKLOCAL; | |
1269 | struct rt6_info *rt = rt6_lookup(dev_net(net_dev), &dst_addr->sin6_addr, | |
1270 | &src_addr->sin6_addr, net_dev->ifindex, | |
1271 | strict); | |
1272 | bool ret; | |
1273 | ||
1274 | if (!rt) | |
1275 | return false; | |
1276 | ||
1277 | ret = rt->rt6i_idev->dev == net_dev; | |
1278 | ip6_rt_put(rt); | |
1279 | ||
1280 | return ret; | |
1281 | #else | |
1282 | return false; | |
1283 | #endif | |
1284 | } | |
1285 | ||
1286 | static bool validate_net_dev(struct net_device *net_dev, | |
1287 | const struct sockaddr *daddr, | |
1288 | const struct sockaddr *saddr) | |
1289 | { | |
1290 | const struct sockaddr_in *daddr4 = (const struct sockaddr_in *)daddr; | |
1291 | const struct sockaddr_in *saddr4 = (const struct sockaddr_in *)saddr; | |
1292 | const struct sockaddr_in6 *daddr6 = (const struct sockaddr_in6 *)daddr; | |
1293 | const struct sockaddr_in6 *saddr6 = (const struct sockaddr_in6 *)saddr; | |
1294 | ||
1295 | switch (daddr->sa_family) { | |
1296 | case AF_INET: | |
1297 | return saddr->sa_family == AF_INET && | |
1298 | validate_ipv4_net_dev(net_dev, daddr4, saddr4); | |
1299 | ||
1300 | case AF_INET6: | |
1301 | return saddr->sa_family == AF_INET6 && | |
1302 | validate_ipv6_net_dev(net_dev, daddr6, saddr6); | |
1303 | ||
1304 | default: | |
1305 | return false; | |
1306 | } | |
1307 | } | |
1308 | ||
4c21b5bc HE |
1309 | static struct net_device *cma_get_net_dev(struct ib_cm_event *ib_event, |
1310 | const struct cma_req_info *req) | |
1311 | { | |
f887f2ac HE |
1312 | struct sockaddr_storage listen_addr_storage, src_addr_storage; |
1313 | struct sockaddr *listen_addr = (struct sockaddr *)&listen_addr_storage, | |
1314 | *src_addr = (struct sockaddr *)&src_addr_storage; | |
4c21b5bc HE |
1315 | struct net_device *net_dev; |
1316 | const union ib_gid *gid = req->has_gid ? &req->local_gid : NULL; | |
1317 | int err; | |
1318 | ||
f887f2ac HE |
1319 | err = cma_save_ip_info(listen_addr, src_addr, ib_event, |
1320 | req->service_id); | |
4c21b5bc HE |
1321 | if (err) |
1322 | return ERR_PTR(err); | |
1323 | ||
1324 | net_dev = ib_get_net_dev_by_params(req->device, req->port, req->pkey, | |
1325 | gid, listen_addr); | |
1326 | if (!net_dev) | |
1327 | return ERR_PTR(-ENODEV); | |
1328 | ||
f887f2ac HE |
1329 | if (!validate_net_dev(net_dev, listen_addr, src_addr)) { |
1330 | dev_put(net_dev); | |
1331 | return ERR_PTR(-EHOSTUNREACH); | |
1332 | } | |
1333 | ||
4c21b5bc HE |
1334 | return net_dev; |
1335 | } | |
1336 | ||
1337 | static enum rdma_port_space rdma_ps_from_service_id(__be64 service_id) | |
1338 | { | |
1339 | return (be64_to_cpu(service_id) >> 16) & 0xffff; | |
1340 | } | |
1341 | ||
1342 | static bool cma_match_private_data(struct rdma_id_private *id_priv, | |
1343 | const struct cma_hdr *hdr) | |
1344 | { | |
1345 | struct sockaddr *addr = cma_src_addr(id_priv); | |
1346 | __be32 ip4_addr; | |
1347 | struct in6_addr ip6_addr; | |
1348 | ||
1349 | if (cma_any_addr(addr) && !id_priv->afonly) | |
1350 | return true; | |
1351 | ||
1352 | switch (addr->sa_family) { | |
1353 | case AF_INET: | |
1354 | ip4_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
1355 | if (cma_get_ip_ver(hdr) != 4) | |
1356 | return false; | |
1357 | if (!cma_any_addr(addr) && | |
1358 | hdr->dst_addr.ip4.addr != ip4_addr) | |
1359 | return false; | |
1360 | break; | |
1361 | case AF_INET6: | |
1362 | ip6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr; | |
1363 | if (cma_get_ip_ver(hdr) != 6) | |
1364 | return false; | |
1365 | if (!cma_any_addr(addr) && | |
1366 | memcmp(&hdr->dst_addr.ip6, &ip6_addr, sizeof(ip6_addr))) | |
1367 | return false; | |
1368 | break; | |
1369 | case AF_IB: | |
1370 | return true; | |
1371 | default: | |
1372 | return false; | |
1373 | } | |
1374 | ||
1375 | return true; | |
1376 | } | |
1377 | ||
b8cab5da HE |
1378 | static bool cma_protocol_roce_dev_port(struct ib_device *device, int port_num) |
1379 | { | |
1380 | enum rdma_link_layer ll = rdma_port_get_link_layer(device, port_num); | |
1381 | enum rdma_transport_type transport = | |
1382 | rdma_node_get_transport(device->node_type); | |
1383 | ||
1384 | return ll == IB_LINK_LAYER_ETHERNET && transport == RDMA_TRANSPORT_IB; | |
1385 | } | |
1386 | ||
1387 | static bool cma_protocol_roce(const struct rdma_cm_id *id) | |
1388 | { | |
1389 | struct ib_device *device = id->device; | |
1390 | const int port_num = id->port_num ?: rdma_start_port(device); | |
1391 | ||
1392 | return cma_protocol_roce_dev_port(device, port_num); | |
1393 | } | |
1394 | ||
fac51590 MB |
1395 | static bool cma_match_net_dev(const struct rdma_cm_id *id, |
1396 | const struct net_device *net_dev, | |
1397 | u8 port_num) | |
4c21b5bc | 1398 | { |
fac51590 | 1399 | const struct rdma_addr *addr = &id->route.addr; |
4c21b5bc HE |
1400 | |
1401 | if (!net_dev) | |
b8cab5da | 1402 | /* This request is an AF_IB request or a RoCE request */ |
fac51590 MB |
1403 | return (!id->port_num || id->port_num == port_num) && |
1404 | (addr->src_addr.ss_family == AF_IB || | |
1405 | cma_protocol_roce_dev_port(id->device, port_num)); | |
4c21b5bc HE |
1406 | |
1407 | return !addr->dev_addr.bound_dev_if || | |
fa20105e | 1408 | (net_eq(dev_net(net_dev), addr->dev_addr.net) && |
4c21b5bc HE |
1409 | addr->dev_addr.bound_dev_if == net_dev->ifindex); |
1410 | } | |
1411 | ||
1412 | static struct rdma_id_private *cma_find_listener( | |
1413 | const struct rdma_bind_list *bind_list, | |
1414 | const struct ib_cm_id *cm_id, | |
1415 | const struct ib_cm_event *ib_event, | |
1416 | const struct cma_req_info *req, | |
1417 | const struct net_device *net_dev) | |
1418 | { | |
1419 | struct rdma_id_private *id_priv, *id_priv_dev; | |
1420 | ||
1421 | if (!bind_list) | |
1422 | return ERR_PTR(-EINVAL); | |
1423 | ||
1424 | hlist_for_each_entry(id_priv, &bind_list->owners, node) { | |
1425 | if (cma_match_private_data(id_priv, ib_event->private_data)) { | |
1426 | if (id_priv->id.device == cm_id->device && | |
fac51590 | 1427 | cma_match_net_dev(&id_priv->id, net_dev, req->port)) |
4c21b5bc HE |
1428 | return id_priv; |
1429 | list_for_each_entry(id_priv_dev, | |
1430 | &id_priv->listen_list, | |
1431 | listen_list) { | |
1432 | if (id_priv_dev->id.device == cm_id->device && | |
fac51590 | 1433 | cma_match_net_dev(&id_priv_dev->id, net_dev, req->port)) |
4c21b5bc HE |
1434 | return id_priv_dev; |
1435 | } | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | return ERR_PTR(-EINVAL); | |
1440 | } | |
1441 | ||
1442 | static struct rdma_id_private *cma_id_from_event(struct ib_cm_id *cm_id, | |
0b3ca768 HE |
1443 | struct ib_cm_event *ib_event, |
1444 | struct net_device **net_dev) | |
4c21b5bc HE |
1445 | { |
1446 | struct cma_req_info req; | |
1447 | struct rdma_bind_list *bind_list; | |
1448 | struct rdma_id_private *id_priv; | |
4c21b5bc HE |
1449 | int err; |
1450 | ||
1451 | err = cma_save_req_info(ib_event, &req); | |
1452 | if (err) | |
1453 | return ERR_PTR(err); | |
1454 | ||
0b3ca768 HE |
1455 | *net_dev = cma_get_net_dev(ib_event, &req); |
1456 | if (IS_ERR(*net_dev)) { | |
1457 | if (PTR_ERR(*net_dev) == -EAFNOSUPPORT) { | |
4c21b5bc | 1458 | /* Assuming the protocol is AF_IB */ |
0b3ca768 | 1459 | *net_dev = NULL; |
b8cab5da HE |
1460 | } else if (cma_protocol_roce_dev_port(req.device, req.port)) { |
1461 | /* TODO find the net dev matching the request parameters | |
1462 | * through the RoCE GID table */ | |
1463 | *net_dev = NULL; | |
4c21b5bc | 1464 | } else { |
0b3ca768 | 1465 | return ERR_CAST(*net_dev); |
4c21b5bc HE |
1466 | } |
1467 | } | |
1468 | ||
fa20105e | 1469 | bind_list = cma_ps_find(*net_dev ? dev_net(*net_dev) : &init_net, |
4be74b42 | 1470 | rdma_ps_from_service_id(req.service_id), |
4c21b5bc | 1471 | cma_port_from_service_id(req.service_id)); |
0b3ca768 | 1472 | id_priv = cma_find_listener(bind_list, cm_id, ib_event, &req, *net_dev); |
b3b51f9f | 1473 | if (IS_ERR(id_priv) && *net_dev) { |
be688195 HE |
1474 | dev_put(*net_dev); |
1475 | *net_dev = NULL; | |
1476 | } | |
4c21b5bc HE |
1477 | |
1478 | return id_priv; | |
1479 | } | |
1480 | ||
e8160e15 | 1481 | static inline int cma_user_data_offset(struct rdma_id_private *id_priv) |
e51060f0 | 1482 | { |
e8160e15 | 1483 | return cma_family(id_priv) == AF_IB ? 0 : sizeof(struct cma_hdr); |
e51060f0 SH |
1484 | } |
1485 | ||
e51060f0 SH |
1486 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
1487 | { | |
fe53ba2f | 1488 | if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) { |
e51060f0 SH |
1489 | if (id_priv->query) |
1490 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
e51060f0 SH |
1491 | } |
1492 | } | |
1493 | ||
e51060f0 SH |
1494 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
1495 | { | |
1496 | struct rdma_id_private *dev_id_priv; | |
1497 | ||
d02d1f53 SH |
1498 | /* |
1499 | * Remove from listen_any_list to prevent added devices from spawning | |
1500 | * additional listen requests. | |
1501 | */ | |
e51060f0 SH |
1502 | mutex_lock(&lock); |
1503 | list_del(&id_priv->list); | |
1504 | ||
1505 | while (!list_empty(&id_priv->listen_list)) { | |
1506 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
1507 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
1508 | /* sync with device removal to avoid duplicate destruction */ |
1509 | list_del_init(&dev_id_priv->list); | |
1510 | list_del(&dev_id_priv->listen_list); | |
1511 | mutex_unlock(&lock); | |
1512 | ||
1513 | rdma_destroy_id(&dev_id_priv->id); | |
1514 | mutex_lock(&lock); | |
e51060f0 SH |
1515 | } |
1516 | mutex_unlock(&lock); | |
1517 | } | |
1518 | ||
1519 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 1520 | enum rdma_cm_state state) |
e51060f0 SH |
1521 | { |
1522 | switch (state) { | |
550e5ca7 | 1523 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
1524 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
1525 | break; | |
550e5ca7 | 1526 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
1527 | cma_cancel_route(id_priv); |
1528 | break; | |
550e5ca7 | 1529 | case RDMA_CM_LISTEN: |
f4753834 | 1530 | if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) |
e51060f0 SH |
1531 | cma_cancel_listens(id_priv); |
1532 | break; | |
1533 | default: | |
1534 | break; | |
1535 | } | |
1536 | } | |
1537 | ||
1538 | static void cma_release_port(struct rdma_id_private *id_priv) | |
1539 | { | |
1540 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
fa20105e | 1541 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
1542 | |
1543 | if (!bind_list) | |
1544 | return; | |
1545 | ||
1546 | mutex_lock(&lock); | |
1547 | hlist_del(&id_priv->node); | |
1548 | if (hlist_empty(&bind_list->owners)) { | |
fa20105e | 1549 | cma_ps_remove(net, bind_list->ps, bind_list->port); |
e51060f0 SH |
1550 | kfree(bind_list); |
1551 | } | |
1552 | mutex_unlock(&lock); | |
1553 | } | |
1554 | ||
c8f6a362 SH |
1555 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
1556 | { | |
1557 | struct cma_multicast *mc; | |
1558 | ||
1559 | while (!list_empty(&id_priv->mc_list)) { | |
1560 | mc = container_of(id_priv->mc_list.next, | |
1561 | struct cma_multicast, list); | |
1562 | list_del(&mc->list); | |
a31ad3b0 | 1563 | if (rdma_cap_ib_mcast(id_priv->cma_dev->device, |
5c9a5282 | 1564 | id_priv->id.port_num)) { |
3c86aa70 EC |
1565 | ib_sa_free_multicast(mc->multicast.ib); |
1566 | kfree(mc); | |
bee3c3c9 MS |
1567 | } else { |
1568 | if (mc->igmp_joined) { | |
1569 | struct rdma_dev_addr *dev_addr = | |
1570 | &id_priv->id.route.addr.dev_addr; | |
1571 | struct net_device *ndev = NULL; | |
1572 | ||
1573 | if (dev_addr->bound_dev_if) | |
1574 | ndev = dev_get_by_index(&init_net, | |
1575 | dev_addr->bound_dev_if); | |
1576 | if (ndev) { | |
1577 | cma_igmp_send(ndev, | |
1578 | &mc->multicast.ib->rec.mgid, | |
1579 | false); | |
1580 | dev_put(ndev); | |
1581 | } | |
1582 | } | |
3c86aa70 | 1583 | kref_put(&mc->mcref, release_mc); |
bee3c3c9 | 1584 | } |
c8f6a362 SH |
1585 | } |
1586 | } | |
1587 | ||
e51060f0 SH |
1588 | void rdma_destroy_id(struct rdma_cm_id *id) |
1589 | { | |
1590 | struct rdma_id_private *id_priv; | |
550e5ca7 | 1591 | enum rdma_cm_state state; |
e51060f0 SH |
1592 | |
1593 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1594 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1595 | cma_cancel_operation(id_priv, state); |
1596 | ||
a396d43a SH |
1597 | /* |
1598 | * Wait for any active callback to finish. New callbacks will find | |
1599 | * the id_priv state set to destroying and abort. | |
1600 | */ | |
1601 | mutex_lock(&id_priv->handler_mutex); | |
1602 | mutex_unlock(&id_priv->handler_mutex); | |
1603 | ||
e51060f0 | 1604 | if (id_priv->cma_dev) { |
72219cea | 1605 | if (rdma_cap_ib_cm(id_priv->id.device, 1)) { |
0c9361fc | 1606 | if (id_priv->cm_id.ib) |
e51060f0 | 1607 | ib_destroy_cm_id(id_priv->cm_id.ib); |
04215330 | 1608 | } else if (rdma_cap_iw_cm(id_priv->id.device, 1)) { |
0c9361fc | 1609 | if (id_priv->cm_id.iw) |
07ebafba | 1610 | iw_destroy_cm_id(id_priv->cm_id.iw); |
e51060f0 | 1611 | } |
c8f6a362 | 1612 | cma_leave_mc_groups(id_priv); |
a396d43a | 1613 | cma_release_dev(id_priv); |
e51060f0 SH |
1614 | } |
1615 | ||
1616 | cma_release_port(id_priv); | |
1617 | cma_deref_id(id_priv); | |
1618 | wait_for_completion(&id_priv->comp); | |
1619 | ||
d02d1f53 SH |
1620 | if (id_priv->internal_id) |
1621 | cma_deref_id(id_priv->id.context); | |
1622 | ||
e51060f0 | 1623 | kfree(id_priv->id.route.path_rec); |
fa20105e | 1624 | put_net(id_priv->id.route.addr.dev_addr.net); |
e51060f0 SH |
1625 | kfree(id_priv); |
1626 | } | |
1627 | EXPORT_SYMBOL(rdma_destroy_id); | |
1628 | ||
1629 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
1630 | { | |
1631 | int ret; | |
1632 | ||
5851bb89 | 1633 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
1634 | if (ret) |
1635 | goto reject; | |
1636 | ||
5851bb89 | 1637 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
1638 | if (ret) |
1639 | goto reject; | |
1640 | ||
1641 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
1642 | if (ret) | |
1643 | goto reject; | |
1644 | ||
1645 | return 0; | |
1646 | reject: | |
c5483388 | 1647 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
1648 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
1649 | NULL, 0, NULL, 0); | |
1650 | return ret; | |
1651 | } | |
1652 | ||
a1b1b61f SH |
1653 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
1654 | struct ib_cm_rep_event_param *rep_data, | |
1655 | void *private_data) | |
1656 | { | |
1657 | event->param.conn.private_data = private_data; | |
1658 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
1659 | event->param.conn.responder_resources = rep_data->responder_resources; | |
1660 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
1661 | event->param.conn.flow_control = rep_data->flow_control; | |
1662 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
1663 | event->param.conn.srq = rep_data->srq; | |
1664 | event->param.conn.qp_num = rep_data->remote_qpn; | |
1665 | } | |
1666 | ||
e51060f0 SH |
1667 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1668 | { | |
1669 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
1670 | struct rdma_cm_event event; |
1671 | int ret = 0; | |
e51060f0 | 1672 | |
37e07cda | 1673 | mutex_lock(&id_priv->handler_mutex); |
38ca83a5 | 1674 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
37e07cda | 1675 | id_priv->state != RDMA_CM_CONNECT) || |
38ca83a5 | 1676 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
37e07cda BVA |
1677 | id_priv->state != RDMA_CM_DISCONNECT)) |
1678 | goto out; | |
e51060f0 | 1679 | |
a1b1b61f | 1680 | memset(&event, 0, sizeof event); |
e51060f0 SH |
1681 | switch (ib_event->event) { |
1682 | case IB_CM_REQ_ERROR: | |
1683 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1684 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1685 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1686 | break; |
1687 | case IB_CM_REP_RECEIVED: | |
01602f11 | 1688 | if (id_priv->id.qp) { |
a1b1b61f SH |
1689 | event.status = cma_rep_recv(id_priv); |
1690 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1691 | RDMA_CM_EVENT_ESTABLISHED; | |
01602f11 | 1692 | } else { |
a1b1b61f | 1693 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
01602f11 | 1694 | } |
a1b1b61f SH |
1695 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, |
1696 | ib_event->private_data); | |
e51060f0 SH |
1697 | break; |
1698 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1699 | case IB_CM_USER_ESTABLISHED: |
1700 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1701 | break; |
1702 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1703 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1704 | case IB_CM_DREQ_RECEIVED: |
1705 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1706 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1707 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1708 | goto out; |
a1b1b61f | 1709 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1710 | break; |
1711 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1712 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1713 | break; | |
e51060f0 SH |
1714 | case IB_CM_MRA_RECEIVED: |
1715 | /* ignore event */ | |
1716 | goto out; | |
1717 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 1718 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1719 | event.status = ib_event->param.rej_rcvd.reason; |
1720 | event.event = RDMA_CM_EVENT_REJECTED; | |
1721 | event.param.conn.private_data = ib_event->private_data; | |
1722 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1723 | break; |
1724 | default: | |
aba25a3e | 1725 | pr_err("RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1726 | ib_event->event); |
1727 | goto out; | |
1728 | } | |
1729 | ||
a1b1b61f | 1730 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1731 | if (ret) { |
1732 | /* Destroy the CM ID by returning a non-zero value. */ | |
1733 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1734 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1735 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1736 | rdma_destroy_id(&id_priv->id); |
1737 | return ret; | |
1738 | } | |
1739 | out: | |
de910bd9 | 1740 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1741 | return ret; |
1742 | } | |
1743 | ||
628e5f6d | 1744 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
0b3ca768 HE |
1745 | struct ib_cm_event *ib_event, |
1746 | struct net_device *net_dev) | |
e51060f0 SH |
1747 | { |
1748 | struct rdma_id_private *id_priv; | |
1749 | struct rdma_cm_id *id; | |
1750 | struct rdma_route *rt; | |
0c505f70 HE |
1751 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
1752 | const __be64 service_id = | |
1753 | ib_event->param.req_rcvd.primary_path->service_id; | |
64c5e613 | 1754 | int ret; |
e51060f0 | 1755 | |
fa20105e GS |
1756 | id = rdma_create_id(listen_id->route.addr.dev_addr.net, |
1757 | listen_id->event_handler, listen_id->context, | |
b26f9b99 | 1758 | listen_id->ps, ib_event->param.req_rcvd.qp_type); |
e51060f0 | 1759 | if (IS_ERR(id)) |
0c9361fc | 1760 | return NULL; |
3f168d2b | 1761 | |
f4753834 | 1762 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
1763 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
1764 | (struct sockaddr *)&id->route.addr.dst_addr, | |
1765 | listen_id, ib_event, ss_family, service_id)) | |
fbaa1a6d | 1766 | goto err; |
e51060f0 SH |
1767 | |
1768 | rt = &id->route; | |
1769 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1770 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1771 | GFP_KERNEL); | |
e51060f0 | 1772 | if (!rt->path_rec) |
0c9361fc | 1773 | goto err; |
e51060f0 | 1774 | |
e51060f0 SH |
1775 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1776 | if (rt->num_paths == 2) | |
1777 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1778 | ||
0b3ca768 HE |
1779 | if (net_dev) { |
1780 | ret = rdma_copy_addr(&rt->addr.dev_addr, net_dev, NULL); | |
6f8372b6 | 1781 | if (ret) |
0c9361fc | 1782 | goto err; |
0b3ca768 | 1783 | } else { |
b8cab5da HE |
1784 | if (!cma_protocol_roce(listen_id) && |
1785 | cma_any_addr(cma_src_addr(id_priv))) { | |
1786 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; | |
1787 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
1788 | ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); | |
1789 | } else if (!cma_any_addr(cma_src_addr(id_priv))) { | |
1790 | ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr); | |
1791 | if (ret) | |
1792 | goto err; | |
1793 | } | |
6f8372b6 SH |
1794 | } |
1795 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 | 1796 | |
550e5ca7 | 1797 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 1798 | return id_priv; |
3f168d2b | 1799 | |
3f168d2b | 1800 | err: |
0c9361fc | 1801 | rdma_destroy_id(id); |
e51060f0 SH |
1802 | return NULL; |
1803 | } | |
1804 | ||
628e5f6d | 1805 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
0b3ca768 HE |
1806 | struct ib_cm_event *ib_event, |
1807 | struct net_device *net_dev) | |
628e5f6d SH |
1808 | { |
1809 | struct rdma_id_private *id_priv; | |
1810 | struct rdma_cm_id *id; | |
0c505f70 | 1811 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
fa20105e | 1812 | struct net *net = listen_id->route.addr.dev_addr.net; |
628e5f6d SH |
1813 | int ret; |
1814 | ||
fa20105e | 1815 | id = rdma_create_id(net, listen_id->event_handler, listen_id->context, |
b26f9b99 | 1816 | listen_id->ps, IB_QPT_UD); |
628e5f6d SH |
1817 | if (IS_ERR(id)) |
1818 | return NULL; | |
1819 | ||
f4753834 | 1820 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
1821 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
1822 | (struct sockaddr *)&id->route.addr.dst_addr, | |
1823 | listen_id, ib_event, ss_family, | |
1824 | ib_event->param.sidr_req_rcvd.service_id)) | |
628e5f6d SH |
1825 | goto err; |
1826 | ||
0b3ca768 HE |
1827 | if (net_dev) { |
1828 | ret = rdma_copy_addr(&id->route.addr.dev_addr, net_dev, NULL); | |
6f8372b6 SH |
1829 | if (ret) |
1830 | goto err; | |
0b3ca768 | 1831 | } else { |
b8cab5da HE |
1832 | if (!cma_any_addr(cma_src_addr(id_priv))) { |
1833 | ret = cma_translate_addr(cma_src_addr(id_priv), | |
1834 | &id->route.addr.dev_addr); | |
1835 | if (ret) | |
1836 | goto err; | |
1837 | } | |
6f8372b6 | 1838 | } |
628e5f6d | 1839 | |
550e5ca7 | 1840 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
1841 | return id_priv; |
1842 | err: | |
1843 | rdma_destroy_id(id); | |
1844 | return NULL; | |
1845 | } | |
1846 | ||
a1b1b61f SH |
1847 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1848 | struct ib_cm_req_event_param *req_data, | |
1849 | void *private_data, int offset) | |
1850 | { | |
1851 | event->param.conn.private_data = private_data + offset; | |
1852 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1853 | event->param.conn.responder_resources = req_data->responder_resources; | |
1854 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1855 | event->param.conn.flow_control = req_data->flow_control; | |
1856 | event->param.conn.retry_count = req_data->retry_count; | |
1857 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1858 | event->param.conn.srq = req_data->srq; | |
1859 | event->param.conn.qp_num = req_data->remote_qpn; | |
1860 | } | |
1861 | ||
9595480c HS |
1862 | static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) |
1863 | { | |
4dd81e89 | 1864 | return (((ib_event->event == IB_CM_REQ_RECEIVED) && |
9595480c HS |
1865 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || |
1866 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
1867 | (id->qp_type == IB_QPT_UD)) || | |
1868 | (!id->qp_type)); | |
1869 | } | |
1870 | ||
e51060f0 SH |
1871 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1872 | { | |
37e07cda | 1873 | struct rdma_id_private *listen_id, *conn_id = NULL; |
a1b1b61f | 1874 | struct rdma_cm_event event; |
0b3ca768 | 1875 | struct net_device *net_dev; |
e51060f0 SH |
1876 | int offset, ret; |
1877 | ||
0b3ca768 | 1878 | listen_id = cma_id_from_event(cm_id, ib_event, &net_dev); |
4c21b5bc HE |
1879 | if (IS_ERR(listen_id)) |
1880 | return PTR_ERR(listen_id); | |
1881 | ||
0b3ca768 HE |
1882 | if (!cma_check_req_qp_type(&listen_id->id, ib_event)) { |
1883 | ret = -EINVAL; | |
1884 | goto net_dev_put; | |
1885 | } | |
9595480c | 1886 | |
37e07cda BVA |
1887 | mutex_lock(&listen_id->handler_mutex); |
1888 | if (listen_id->state != RDMA_CM_LISTEN) { | |
0b3ca768 | 1889 | ret = -ECONNABORTED; |
37e07cda | 1890 | goto err1; |
0b3ca768 | 1891 | } |
e51060f0 | 1892 | |
628e5f6d | 1893 | memset(&event, 0, sizeof event); |
e8160e15 | 1894 | offset = cma_user_data_offset(listen_id); |
628e5f6d | 1895 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; |
9595480c | 1896 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
0b3ca768 | 1897 | conn_id = cma_new_udp_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
1898 | event.param.ud.private_data = ib_event->private_data + offset; |
1899 | event.param.ud.private_data_len = | |
1900 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1901 | } else { | |
0b3ca768 | 1902 | conn_id = cma_new_conn_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
1903 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, |
1904 | ib_event->private_data, offset); | |
1905 | } | |
e51060f0 SH |
1906 | if (!conn_id) { |
1907 | ret = -ENOMEM; | |
b6cec8aa | 1908 | goto err1; |
e51060f0 SH |
1909 | } |
1910 | ||
de910bd9 | 1911 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
be9130cc | 1912 | ret = cma_acquire_dev(conn_id, listen_id); |
a1a733f6 | 1913 | if (ret) |
b6cec8aa | 1914 | goto err2; |
e51060f0 SH |
1915 | |
1916 | conn_id->cm_id.ib = cm_id; | |
1917 | cm_id->context = conn_id; | |
1918 | cm_id->cm_handler = cma_ib_handler; | |
1919 | ||
25ae21a1 SH |
1920 | /* |
1921 | * Protect against the user destroying conn_id from another thread | |
1922 | * until we're done accessing it. | |
1923 | */ | |
1924 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1925 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
b6cec8aa SH |
1926 | if (ret) |
1927 | goto err3; | |
b6cec8aa SH |
1928 | /* |
1929 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1930 | * while we're accessing the cm_id. | |
1931 | */ | |
1932 | mutex_lock(&lock); | |
dd5f03be MB |
1933 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && |
1934 | (conn_id->id.qp_type != IB_QPT_UD)) | |
b6cec8aa SH |
1935 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); |
1936 | mutex_unlock(&lock); | |
1937 | mutex_unlock(&conn_id->handler_mutex); | |
1938 | mutex_unlock(&listen_id->handler_mutex); | |
25ae21a1 | 1939 | cma_deref_id(conn_id); |
0b3ca768 HE |
1940 | if (net_dev) |
1941 | dev_put(net_dev); | |
b6cec8aa | 1942 | return 0; |
a1a733f6 | 1943 | |
b6cec8aa SH |
1944 | err3: |
1945 | cma_deref_id(conn_id); | |
a1a733f6 KK |
1946 | /* Destroy the CM ID by returning a non-zero value. */ |
1947 | conn_id->cm_id.ib = NULL; | |
b6cec8aa | 1948 | err2: |
550e5ca7 | 1949 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1950 | mutex_unlock(&conn_id->handler_mutex); |
b6cec8aa | 1951 | err1: |
de910bd9 | 1952 | mutex_unlock(&listen_id->handler_mutex); |
b6cec8aa SH |
1953 | if (conn_id) |
1954 | rdma_destroy_id(&conn_id->id); | |
0b3ca768 HE |
1955 | |
1956 | net_dev_put: | |
1957 | if (net_dev) | |
1958 | dev_put(net_dev); | |
1959 | ||
e51060f0 SH |
1960 | return ret; |
1961 | } | |
1962 | ||
cf53936f | 1963 | __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr) |
e51060f0 | 1964 | { |
496ce3ce SH |
1965 | if (addr->sa_family == AF_IB) |
1966 | return ((struct sockaddr_ib *) addr)->sib_sid; | |
1967 | ||
cf53936f | 1968 | return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 | 1969 | } |
cf53936f | 1970 | EXPORT_SYMBOL(rdma_get_service_id); |
e51060f0 | 1971 | |
07ebafba TT |
1972 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1973 | { | |
1974 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1975 | struct rdma_cm_event event; |
07ebafba | 1976 | int ret = 0; |
24d44a39 SW |
1977 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
1978 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba | 1979 | |
37e07cda BVA |
1980 | mutex_lock(&id_priv->handler_mutex); |
1981 | if (id_priv->state != RDMA_CM_CONNECT) | |
1982 | goto out; | |
07ebafba | 1983 | |
be65f086 | 1984 | memset(&event, 0, sizeof event); |
07ebafba TT |
1985 | switch (iw_event->event) { |
1986 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1987 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1988 | break; |
1989 | case IW_CM_EVENT_CONNECT_REPLY: | |
24d44a39 SW |
1990 | memcpy(cma_src_addr(id_priv), laddr, |
1991 | rdma_addr_size(laddr)); | |
1992 | memcpy(cma_dst_addr(id_priv), raddr, | |
1993 | rdma_addr_size(raddr)); | |
881a045f SW |
1994 | switch (iw_event->status) { |
1995 | case 0: | |
a1b1b61f | 1996 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1997 | event.param.conn.initiator_depth = iw_event->ird; |
1998 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
1999 | break; |
2000 | case -ECONNRESET: | |
2001 | case -ECONNREFUSED: | |
2002 | event.event = RDMA_CM_EVENT_REJECTED; | |
2003 | break; | |
2004 | case -ETIMEDOUT: | |
2005 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
2006 | break; | |
2007 | default: | |
2008 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
2009 | break; | |
2010 | } | |
07ebafba TT |
2011 | break; |
2012 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 2013 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
2014 | event.param.conn.initiator_depth = iw_event->ird; |
2015 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
2016 | break; |
2017 | default: | |
2018 | BUG_ON(1); | |
2019 | } | |
2020 | ||
a1b1b61f SH |
2021 | event.status = iw_event->status; |
2022 | event.param.conn.private_data = iw_event->private_data; | |
2023 | event.param.conn.private_data_len = iw_event->private_data_len; | |
2024 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
2025 | if (ret) { |
2026 | /* Destroy the CM ID by returning a non-zero value. */ | |
2027 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 2028 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2029 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
2030 | rdma_destroy_id(&id_priv->id); |
2031 | return ret; | |
2032 | } | |
2033 | ||
37e07cda | 2034 | out: |
de910bd9 | 2035 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
2036 | return ret; |
2037 | } | |
2038 | ||
2039 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
2040 | struct iw_cm_event *iw_event) | |
2041 | { | |
2042 | struct rdma_cm_id *new_cm_id; | |
2043 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 2044 | struct rdma_cm_event event; |
37e07cda | 2045 | int ret = -ECONNABORTED; |
24d44a39 SW |
2046 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
2047 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba TT |
2048 | |
2049 | listen_id = cm_id->context; | |
37e07cda BVA |
2050 | |
2051 | mutex_lock(&listen_id->handler_mutex); | |
2052 | if (listen_id->state != RDMA_CM_LISTEN) | |
2053 | goto out; | |
07ebafba TT |
2054 | |
2055 | /* Create a new RDMA id for the new IW CM ID */ | |
fa20105e GS |
2056 | new_cm_id = rdma_create_id(listen_id->id.route.addr.dev_addr.net, |
2057 | listen_id->id.event_handler, | |
07ebafba | 2058 | listen_id->id.context, |
b26f9b99 | 2059 | RDMA_PS_TCP, IB_QPT_RC); |
10f32065 | 2060 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
2061 | ret = -ENOMEM; |
2062 | goto out; | |
2063 | } | |
2064 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 2065 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 2066 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 2067 | |
dd5f03be | 2068 | ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr, NULL); |
07ebafba | 2069 | if (ret) { |
de910bd9 | 2070 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
2071 | rdma_destroy_id(new_cm_id); |
2072 | goto out; | |
2073 | } | |
2074 | ||
be9130cc | 2075 | ret = cma_acquire_dev(conn_id, listen_id); |
07ebafba | 2076 | if (ret) { |
de910bd9 | 2077 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
2078 | rdma_destroy_id(new_cm_id); |
2079 | goto out; | |
2080 | } | |
2081 | ||
2082 | conn_id->cm_id.iw = cm_id; | |
2083 | cm_id->context = conn_id; | |
2084 | cm_id->cm_handler = cma_iw_handler; | |
2085 | ||
24d44a39 SW |
2086 | memcpy(cma_src_addr(conn_id), laddr, rdma_addr_size(laddr)); |
2087 | memcpy(cma_dst_addr(conn_id), raddr, rdma_addr_size(raddr)); | |
07ebafba | 2088 | |
a1b1b61f SH |
2089 | memset(&event, 0, sizeof event); |
2090 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
2091 | event.param.conn.private_data = iw_event->private_data; | |
2092 | event.param.conn.private_data_len = iw_event->private_data_len; | |
3ebeebc3 KS |
2093 | event.param.conn.initiator_depth = iw_event->ird; |
2094 | event.param.conn.responder_resources = iw_event->ord; | |
25ae21a1 SH |
2095 | |
2096 | /* | |
2097 | * Protect against the user destroying conn_id from another thread | |
2098 | * until we're done accessing it. | |
2099 | */ | |
2100 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 2101 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
2102 | if (ret) { |
2103 | /* User wants to destroy the CM ID */ | |
2104 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 2105 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 2106 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 2107 | cma_deref_id(conn_id); |
07ebafba | 2108 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 2109 | goto out; |
07ebafba TT |
2110 | } |
2111 | ||
de910bd9 | 2112 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 2113 | cma_deref_id(conn_id); |
de910bd9 | 2114 | |
07ebafba | 2115 | out: |
de910bd9 | 2116 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
2117 | return ret; |
2118 | } | |
2119 | ||
e51060f0 SH |
2120 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
2121 | { | |
e51060f0 | 2122 | struct sockaddr *addr; |
0c9361fc | 2123 | struct ib_cm_id *id; |
e51060f0 | 2124 | __be64 svc_id; |
e51060f0 | 2125 | |
51efe394 HE |
2126 | addr = cma_src_addr(id_priv); |
2127 | svc_id = rdma_get_service_id(&id_priv->id, addr); | |
2128 | id = ib_cm_insert_listen(id_priv->id.device, cma_req_handler, svc_id); | |
0c9361fc JM |
2129 | if (IS_ERR(id)) |
2130 | return PTR_ERR(id); | |
0c9361fc | 2131 | id_priv->cm_id.ib = id; |
e51060f0 | 2132 | |
51efe394 | 2133 | return 0; |
e51060f0 SH |
2134 | } |
2135 | ||
07ebafba TT |
2136 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
2137 | { | |
2138 | int ret; | |
0c9361fc JM |
2139 | struct iw_cm_id *id; |
2140 | ||
2141 | id = iw_create_cm_id(id_priv->id.device, | |
2142 | iw_conn_req_handler, | |
2143 | id_priv); | |
2144 | if (IS_ERR(id)) | |
2145 | return PTR_ERR(id); | |
07ebafba | 2146 | |
68cdba06 | 2147 | id->tos = id_priv->tos; |
0c9361fc | 2148 | id_priv->cm_id.iw = id; |
07ebafba | 2149 | |
24d44a39 SW |
2150 | memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv), |
2151 | rdma_addr_size(cma_src_addr(id_priv))); | |
07ebafba TT |
2152 | |
2153 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
2154 | ||
2155 | if (ret) { | |
2156 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
2157 | id_priv->cm_id.iw = NULL; | |
2158 | } | |
2159 | ||
2160 | return ret; | |
2161 | } | |
2162 | ||
e51060f0 SH |
2163 | static int cma_listen_handler(struct rdma_cm_id *id, |
2164 | struct rdma_cm_event *event) | |
2165 | { | |
2166 | struct rdma_id_private *id_priv = id->context; | |
2167 | ||
2168 | id->context = id_priv->id.context; | |
2169 | id->event_handler = id_priv->id.event_handler; | |
2170 | return id_priv->id.event_handler(id, event); | |
2171 | } | |
2172 | ||
2173 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
2174 | struct cma_device *cma_dev) | |
2175 | { | |
2176 | struct rdma_id_private *dev_id_priv; | |
2177 | struct rdma_cm_id *id; | |
fa20105e | 2178 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
2179 | int ret; |
2180 | ||
72219cea | 2181 | if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1)) |
94d0c939 SH |
2182 | return; |
2183 | ||
fa20105e | 2184 | id = rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps, |
b26f9b99 | 2185 | id_priv->id.qp_type); |
e51060f0 SH |
2186 | if (IS_ERR(id)) |
2187 | return; | |
2188 | ||
2189 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
2190 | ||
550e5ca7 | 2191 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
f4753834 SH |
2192 | memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv), |
2193 | rdma_addr_size(cma_src_addr(id_priv))); | |
e51060f0 | 2194 | |
045959db | 2195 | _cma_attach_to_dev(dev_id_priv, cma_dev); |
e51060f0 | 2196 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); |
d02d1f53 SH |
2197 | atomic_inc(&id_priv->refcount); |
2198 | dev_id_priv->internal_id = 1; | |
5b0ec991 | 2199 | dev_id_priv->afonly = id_priv->afonly; |
e51060f0 SH |
2200 | |
2201 | ret = rdma_listen(id, id_priv->backlog); | |
2202 | if (ret) | |
aba25a3e PP |
2203 | pr_warn("RDMA CMA: cma_listen_on_dev, error %d, listening on device %s\n", |
2204 | ret, cma_dev->device->name); | |
e51060f0 SH |
2205 | } |
2206 | ||
2207 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
2208 | { | |
2209 | struct cma_device *cma_dev; | |
2210 | ||
2211 | mutex_lock(&lock); | |
2212 | list_add_tail(&id_priv->list, &listen_any_list); | |
2213 | list_for_each_entry(cma_dev, &dev_list, list) | |
2214 | cma_listen_on_dev(id_priv, cma_dev); | |
2215 | mutex_unlock(&lock); | |
2216 | } | |
2217 | ||
a81c994d SH |
2218 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
2219 | { | |
2220 | struct rdma_id_private *id_priv; | |
2221 | ||
2222 | id_priv = container_of(id, struct rdma_id_private, id); | |
2223 | id_priv->tos = (u8) tos; | |
2224 | } | |
2225 | EXPORT_SYMBOL(rdma_set_service_type); | |
2226 | ||
e51060f0 SH |
2227 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
2228 | void *context) | |
2229 | { | |
2230 | struct cma_work *work = context; | |
2231 | struct rdma_route *route; | |
2232 | ||
2233 | route = &work->id->id.route; | |
2234 | ||
2235 | if (!status) { | |
2236 | route->num_paths = 1; | |
2237 | *route->path_rec = *path_rec; | |
2238 | } else { | |
550e5ca7 NM |
2239 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2240 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 2241 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 2242 | work->event.status = status; |
e51060f0 SH |
2243 | } |
2244 | ||
2245 | queue_work(cma_wq, &work->work); | |
2246 | } | |
2247 | ||
2248 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
2249 | struct cma_work *work) | |
2250 | { | |
f4753834 | 2251 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 2252 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
2253 | ib_sa_comp_mask comp_mask; |
2254 | struct sockaddr_in6 *sin6; | |
f68194ca | 2255 | struct sockaddr_ib *sib; |
e51060f0 SH |
2256 | |
2257 | memset(&path_rec, 0, sizeof path_rec); | |
f4753834 SH |
2258 | rdma_addr_get_sgid(dev_addr, &path_rec.sgid); |
2259 | rdma_addr_get_dgid(dev_addr, &path_rec.dgid); | |
2260 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
e51060f0 | 2261 | path_rec.numb_path = 1; |
962063e6 | 2262 | path_rec.reversible = 1; |
cf53936f | 2263 | path_rec.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
a81c994d SH |
2264 | |
2265 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
2266 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
2267 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
2268 | ||
f68194ca SH |
2269 | switch (cma_family(id_priv)) { |
2270 | case AF_INET: | |
a81c994d SH |
2271 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
2272 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
f68194ca SH |
2273 | break; |
2274 | case AF_INET6: | |
f4753834 | 2275 | sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
a81c994d SH |
2276 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); |
2277 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
f68194ca SH |
2278 | break; |
2279 | case AF_IB: | |
2280 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); | |
2281 | path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20); | |
2282 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
2283 | break; | |
a81c994d | 2284 | } |
e51060f0 | 2285 | |
c1a0b23b | 2286 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
2287 | id_priv->id.port_num, &path_rec, |
2288 | comp_mask, timeout_ms, | |
2289 | GFP_KERNEL, cma_query_handler, | |
2290 | work, &id_priv->query); | |
e51060f0 SH |
2291 | |
2292 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
2293 | } | |
2294 | ||
c4028958 | 2295 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 2296 | { |
c4028958 | 2297 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
2298 | struct rdma_id_private *id_priv = work->id; |
2299 | int destroy = 0; | |
2300 | ||
de910bd9 | 2301 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2302 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
2303 | goto out; | |
2304 | ||
2305 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2306 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
2307 | destroy = 1; |
2308 | } | |
2309 | out: | |
de910bd9 | 2310 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2311 | cma_deref_id(id_priv); |
2312 | if (destroy) | |
2313 | rdma_destroy_id(&id_priv->id); | |
2314 | kfree(work); | |
2315 | } | |
2316 | ||
dd5bdff8 OG |
2317 | static void cma_ndev_work_handler(struct work_struct *_work) |
2318 | { | |
2319 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
2320 | struct rdma_id_private *id_priv = work->id; | |
2321 | int destroy = 0; | |
2322 | ||
2323 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
2324 | if (id_priv->state == RDMA_CM_DESTROYING || |
2325 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
2326 | goto out; |
2327 | ||
2328 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2329 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
2330 | destroy = 1; |
2331 | } | |
2332 | ||
2333 | out: | |
2334 | mutex_unlock(&id_priv->handler_mutex); | |
2335 | cma_deref_id(id_priv); | |
2336 | if (destroy) | |
2337 | rdma_destroy_id(&id_priv->id); | |
2338 | kfree(work); | |
2339 | } | |
2340 | ||
e51060f0 SH |
2341 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
2342 | { | |
2343 | struct rdma_route *route = &id_priv->id.route; | |
2344 | struct cma_work *work; | |
2345 | int ret; | |
2346 | ||
2347 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2348 | if (!work) | |
2349 | return -ENOMEM; | |
2350 | ||
2351 | work->id = id_priv; | |
c4028958 | 2352 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2353 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2354 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
e51060f0 SH |
2355 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2356 | ||
2357 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2358 | if (!route->path_rec) { | |
2359 | ret = -ENOMEM; | |
2360 | goto err1; | |
2361 | } | |
2362 | ||
2363 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
2364 | if (ret) | |
2365 | goto err2; | |
2366 | ||
2367 | return 0; | |
2368 | err2: | |
2369 | kfree(route->path_rec); | |
2370 | route->path_rec = NULL; | |
2371 | err1: | |
2372 | kfree(work); | |
2373 | return ret; | |
2374 | } | |
2375 | ||
2376 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
2377 | struct ib_sa_path_rec *path_rec, int num_paths) | |
2378 | { | |
2379 | struct rdma_id_private *id_priv; | |
2380 | int ret; | |
2381 | ||
2382 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
2383 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2384 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
2385 | return -EINVAL; |
2386 | ||
9893e742 JL |
2387 | id->route.path_rec = kmemdup(path_rec, sizeof *path_rec * num_paths, |
2388 | GFP_KERNEL); | |
e51060f0 SH |
2389 | if (!id->route.path_rec) { |
2390 | ret = -ENOMEM; | |
2391 | goto err; | |
2392 | } | |
2393 | ||
ae2d9293 | 2394 | id->route.num_paths = num_paths; |
e51060f0 SH |
2395 | return 0; |
2396 | err: | |
550e5ca7 | 2397 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2398 | return ret; |
2399 | } | |
2400 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
2401 | ||
07ebafba TT |
2402 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
2403 | { | |
2404 | struct cma_work *work; | |
2405 | ||
2406 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2407 | if (!work) | |
2408 | return -ENOMEM; | |
2409 | ||
2410 | work->id = id_priv; | |
c4028958 | 2411 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2412 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2413 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
07ebafba TT |
2414 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2415 | queue_work(cma_wq, &work->work); | |
2416 | return 0; | |
2417 | } | |
2418 | ||
eb072c4b EP |
2419 | static int iboe_tos_to_sl(struct net_device *ndev, int tos) |
2420 | { | |
2421 | int prio; | |
2422 | struct net_device *dev; | |
2423 | ||
2424 | prio = rt_tos2priority(tos); | |
2425 | dev = ndev->priv_flags & IFF_802_1Q_VLAN ? | |
2426 | vlan_dev_real_dev(ndev) : ndev; | |
2427 | ||
2428 | if (dev->num_tc) | |
2429 | return netdev_get_prio_tc_map(dev, prio); | |
2430 | ||
2431 | #if IS_ENABLED(CONFIG_VLAN_8021Q) | |
2432 | if (ndev->priv_flags & IFF_802_1Q_VLAN) | |
2433 | return (vlan_dev_get_egress_qos_mask(ndev, prio) & | |
2434 | VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
2435 | #endif | |
2436 | return 0; | |
2437 | } | |
2438 | ||
3c86aa70 EC |
2439 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
2440 | { | |
2441 | struct rdma_route *route = &id_priv->id.route; | |
2442 | struct rdma_addr *addr = &route->addr; | |
2443 | struct cma_work *work; | |
2444 | int ret; | |
3c86aa70 | 2445 | struct net_device *ndev = NULL; |
dd5f03be | 2446 | |
3c86aa70 | 2447 | |
3c86aa70 EC |
2448 | work = kzalloc(sizeof *work, GFP_KERNEL); |
2449 | if (!work) | |
2450 | return -ENOMEM; | |
2451 | ||
2452 | work->id = id_priv; | |
2453 | INIT_WORK(&work->work, cma_work_handler); | |
2454 | ||
2455 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2456 | if (!route->path_rec) { | |
2457 | ret = -ENOMEM; | |
2458 | goto err1; | |
2459 | } | |
2460 | ||
2461 | route->num_paths = 1; | |
2462 | ||
abae1b71 | 2463 | if (addr->dev_addr.bound_dev_if) { |
3c86aa70 | 2464 | ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); |
23d70503 WY |
2465 | if (!ndev) { |
2466 | ret = -ENODEV; | |
2467 | goto err2; | |
2468 | } | |
20029832 MB |
2469 | |
2470 | if (ndev->flags & IFF_LOOPBACK) { | |
2471 | dev_put(ndev); | |
23d70503 WY |
2472 | if (!id_priv->id.device->get_netdev) { |
2473 | ret = -EOPNOTSUPP; | |
2474 | goto err2; | |
2475 | } | |
20029832 MB |
2476 | |
2477 | ndev = id_priv->id.device->get_netdev(id_priv->id.device, | |
2478 | id_priv->id.port_num); | |
23d70503 WY |
2479 | if (!ndev) { |
2480 | ret = -ENODEV; | |
2481 | goto err2; | |
2482 | } | |
20029832 MB |
2483 | } |
2484 | ||
abae1b71 | 2485 | route->path_rec->net = &init_net; |
20029832 | 2486 | route->path_rec->ifindex = ndev->ifindex; |
cb57bb84 | 2487 | route->path_rec->gid_type = id_priv->gid_type; |
abae1b71 | 2488 | } |
3c86aa70 EC |
2489 | if (!ndev) { |
2490 | ret = -ENODEV; | |
2491 | goto err2; | |
2492 | } | |
2493 | ||
dd5f03be | 2494 | memcpy(route->path_rec->dmac, addr->dev_addr.dst_dev_addr, ETH_ALEN); |
af7bd463 | 2495 | |
7b85627b MS |
2496 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
2497 | &route->path_rec->sgid); | |
2498 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.dst_addr, | |
2499 | &route->path_rec->dgid); | |
af7bd463 | 2500 | |
c865f246 | 2501 | /* Use the hint from IP Stack to select GID Type */ |
c3efe750 MB |
2502 | if (route->path_rec->gid_type < ib_network_to_gid_type(addr->dev_addr.network)) |
2503 | route->path_rec->gid_type = ib_network_to_gid_type(addr->dev_addr.network); | |
2504 | if (((struct sockaddr *)&id_priv->id.route.addr.dst_addr)->sa_family != AF_IB) | |
c865f246 | 2505 | /* TODO: get the hoplimit from the inet/inet6 device */ |
c3efe750 MB |
2506 | route->path_rec->hop_limit = addr->dev_addr.hoplimit; |
2507 | else | |
c865f246 | 2508 | route->path_rec->hop_limit = 1; |
af7bd463 EC |
2509 | route->path_rec->reversible = 1; |
2510 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
2511 | route->path_rec->mtu_selector = IB_SA_EQ; | |
eb072c4b | 2512 | route->path_rec->sl = iboe_tos_to_sl(ndev, id_priv->tos); |
3c86aa70 EC |
2513 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
2514 | route->path_rec->rate_selector = IB_SA_EQ; | |
2515 | route->path_rec->rate = iboe_get_rate(ndev); | |
2516 | dev_put(ndev); | |
2517 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
2518 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
2519 | if (!route->path_rec->mtu) { | |
2520 | ret = -EINVAL; | |
2521 | goto err2; | |
2522 | } | |
2523 | ||
550e5ca7 NM |
2524 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2525 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
3c86aa70 EC |
2526 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2527 | work->event.status = 0; | |
2528 | ||
2529 | queue_work(cma_wq, &work->work); | |
2530 | ||
2531 | return 0; | |
2532 | ||
2533 | err2: | |
2534 | kfree(route->path_rec); | |
2535 | route->path_rec = NULL; | |
2536 | err1: | |
2537 | kfree(work); | |
2538 | return ret; | |
2539 | } | |
2540 | ||
e51060f0 SH |
2541 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
2542 | { | |
2543 | struct rdma_id_private *id_priv; | |
2544 | int ret; | |
2545 | ||
2546 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2547 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
2548 | return -EINVAL; |
2549 | ||
2550 | atomic_inc(&id_priv->refcount); | |
fe53ba2f | 2551 | if (rdma_cap_ib_sa(id->device, id->port_num)) |
c72f2189 | 2552 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
5d9fb044 | 2553 | else if (rdma_protocol_roce(id->device, id->port_num)) |
c72f2189 MW |
2554 | ret = cma_resolve_iboe_route(id_priv); |
2555 | else if (rdma_protocol_iwarp(id->device, id->port_num)) | |
07ebafba | 2556 | ret = cma_resolve_iw_route(id_priv, timeout_ms); |
c72f2189 | 2557 | else |
e51060f0 | 2558 | ret = -ENOSYS; |
c72f2189 | 2559 | |
e51060f0 SH |
2560 | if (ret) |
2561 | goto err; | |
2562 | ||
2563 | return 0; | |
2564 | err: | |
550e5ca7 | 2565 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2566 | cma_deref_id(id_priv); |
2567 | return ret; | |
2568 | } | |
2569 | EXPORT_SYMBOL(rdma_resolve_route); | |
2570 | ||
6a3e362d SH |
2571 | static void cma_set_loopback(struct sockaddr *addr) |
2572 | { | |
2573 | switch (addr->sa_family) { | |
2574 | case AF_INET: | |
2575 | ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
2576 | break; | |
2577 | case AF_INET6: | |
2578 | ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr, | |
2579 | 0, 0, 0, htonl(1)); | |
2580 | break; | |
2581 | default: | |
2582 | ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr, | |
2583 | 0, 0, 0, htonl(1)); | |
2584 | break; | |
2585 | } | |
2586 | } | |
2587 | ||
e51060f0 SH |
2588 | static int cma_bind_loopback(struct rdma_id_private *id_priv) |
2589 | { | |
b0569e40 | 2590 | struct cma_device *cma_dev, *cur_dev; |
e51060f0 | 2591 | struct ib_port_attr port_attr; |
f0ee3404 | 2592 | union ib_gid gid; |
e51060f0 SH |
2593 | u16 pkey; |
2594 | int ret; | |
2595 | u8 p; | |
2596 | ||
b0569e40 | 2597 | cma_dev = NULL; |
e51060f0 | 2598 | mutex_lock(&lock); |
b0569e40 SH |
2599 | list_for_each_entry(cur_dev, &dev_list, list) { |
2600 | if (cma_family(id_priv) == AF_IB && | |
72219cea | 2601 | !rdma_cap_ib_cm(cur_dev->device, 1)) |
b0569e40 SH |
2602 | continue; |
2603 | ||
2604 | if (!cma_dev) | |
2605 | cma_dev = cur_dev; | |
2606 | ||
2607 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { | |
2608 | if (!ib_query_port(cur_dev->device, p, &port_attr) && | |
2609 | port_attr.state == IB_PORT_ACTIVE) { | |
2610 | cma_dev = cur_dev; | |
2611 | goto port_found; | |
2612 | } | |
2613 | } | |
2614 | } | |
2615 | ||
2616 | if (!cma_dev) { | |
e82153b5 KK |
2617 | ret = -ENODEV; |
2618 | goto out; | |
2619 | } | |
e51060f0 | 2620 | |
e82153b5 | 2621 | p = 1; |
e51060f0 SH |
2622 | |
2623 | port_found: | |
55ee3ab2 | 2624 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid, NULL); |
e51060f0 SH |
2625 | if (ret) |
2626 | goto out; | |
2627 | ||
2628 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
2629 | if (ret) | |
2630 | goto out; | |
2631 | ||
6f8372b6 | 2632 | id_priv->id.route.addr.dev_addr.dev_type = |
21655afc | 2633 | (rdma_protocol_ib(cma_dev->device, p)) ? |
6f8372b6 SH |
2634 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
2635 | ||
2636 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
2637 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
2638 | id_priv->id.port_num = p; | |
2639 | cma_attach_to_dev(id_priv, cma_dev); | |
f4753834 | 2640 | cma_set_loopback(cma_src_addr(id_priv)); |
e51060f0 SH |
2641 | out: |
2642 | mutex_unlock(&lock); | |
2643 | return ret; | |
2644 | } | |
2645 | ||
2646 | static void addr_handler(int status, struct sockaddr *src_addr, | |
2647 | struct rdma_dev_addr *dev_addr, void *context) | |
2648 | { | |
2649 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 2650 | struct rdma_cm_event event; |
e51060f0 | 2651 | |
a1b1b61f | 2652 | memset(&event, 0, sizeof event); |
de910bd9 | 2653 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
2654 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
2655 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 2656 | goto out; |
61a73c70 | 2657 | |
7b85627b | 2658 | memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr)); |
61a73c70 | 2659 | if (!status && !id_priv->cma_dev) |
be9130cc | 2660 | status = cma_acquire_dev(id_priv, NULL); |
e51060f0 SH |
2661 | |
2662 | if (status) { | |
550e5ca7 NM |
2663 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2664 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 2665 | goto out; |
a1b1b61f SH |
2666 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
2667 | event.status = status; | |
7b85627b | 2668 | } else |
a1b1b61f | 2669 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 | 2670 | |
a1b1b61f | 2671 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 2672 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2673 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2674 | cma_deref_id(id_priv); |
2675 | rdma_destroy_id(&id_priv->id); | |
2676 | return; | |
2677 | } | |
2678 | out: | |
de910bd9 | 2679 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2680 | cma_deref_id(id_priv); |
2681 | } | |
2682 | ||
2683 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
2684 | { | |
2685 | struct cma_work *work; | |
f0ee3404 | 2686 | union ib_gid gid; |
e51060f0 SH |
2687 | int ret; |
2688 | ||
2689 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2690 | if (!work) | |
2691 | return -ENOMEM; | |
2692 | ||
2693 | if (!id_priv->cma_dev) { | |
2694 | ret = cma_bind_loopback(id_priv); | |
2695 | if (ret) | |
2696 | goto err; | |
2697 | } | |
2698 | ||
6f8372b6 SH |
2699 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
2700 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 2701 | |
e51060f0 | 2702 | work->id = id_priv; |
c4028958 | 2703 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2704 | work->old_state = RDMA_CM_ADDR_QUERY; |
2705 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 SH |
2706 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
2707 | queue_work(cma_wq, &work->work); | |
2708 | return 0; | |
2709 | err: | |
2710 | kfree(work); | |
2711 | return ret; | |
2712 | } | |
2713 | ||
f17df3b0 SH |
2714 | static int cma_resolve_ib_addr(struct rdma_id_private *id_priv) |
2715 | { | |
2716 | struct cma_work *work; | |
2717 | int ret; | |
2718 | ||
2719 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2720 | if (!work) | |
2721 | return -ENOMEM; | |
2722 | ||
2723 | if (!id_priv->cma_dev) { | |
2724 | ret = cma_resolve_ib_dev(id_priv); | |
2725 | if (ret) | |
2726 | goto err; | |
2727 | } | |
2728 | ||
2729 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *) | |
2730 | &(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr)); | |
2731 | ||
2732 | work->id = id_priv; | |
2733 | INIT_WORK(&work->work, cma_work_handler); | |
2734 | work->old_state = RDMA_CM_ADDR_QUERY; | |
2735 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
2736 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
2737 | queue_work(cma_wq, &work->work); | |
2738 | return 0; | |
2739 | err: | |
2740 | kfree(work); | |
2741 | return ret; | |
2742 | } | |
2743 | ||
e51060f0 SH |
2744 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, |
2745 | struct sockaddr *dst_addr) | |
2746 | { | |
d14714df SH |
2747 | if (!src_addr || !src_addr->sa_family) { |
2748 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
f17df3b0 SH |
2749 | src_addr->sa_family = dst_addr->sa_family; |
2750 | if (dst_addr->sa_family == AF_INET6) { | |
6c26a771 SB |
2751 | struct sockaddr_in6 *src_addr6 = (struct sockaddr_in6 *) src_addr; |
2752 | struct sockaddr_in6 *dst_addr6 = (struct sockaddr_in6 *) dst_addr; | |
2753 | src_addr6->sin6_scope_id = dst_addr6->sin6_scope_id; | |
2754 | if (ipv6_addr_type(&dst_addr6->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
2755 | id->route.addr.dev_addr.bound_dev_if = dst_addr6->sin6_scope_id; | |
f17df3b0 SH |
2756 | } else if (dst_addr->sa_family == AF_IB) { |
2757 | ((struct sockaddr_ib *) src_addr)->sib_pkey = | |
2758 | ((struct sockaddr_ib *) dst_addr)->sib_pkey; | |
d14714df SH |
2759 | } |
2760 | } | |
2761 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
2762 | } |
2763 | ||
2764 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2765 | struct sockaddr *dst_addr, int timeout_ms) | |
2766 | { | |
2767 | struct rdma_id_private *id_priv; | |
2768 | int ret; | |
2769 | ||
2770 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2771 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 SH |
2772 | ret = cma_bind_addr(id, src_addr, dst_addr); |
2773 | if (ret) | |
2774 | return ret; | |
2775 | } | |
2776 | ||
4ae7152e SH |
2777 | if (cma_family(id_priv) != dst_addr->sa_family) |
2778 | return -EINVAL; | |
2779 | ||
550e5ca7 | 2780 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
2781 | return -EINVAL; |
2782 | ||
2783 | atomic_inc(&id_priv->refcount); | |
f4753834 | 2784 | memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); |
f17df3b0 | 2785 | if (cma_any_addr(dst_addr)) { |
e51060f0 | 2786 | ret = cma_resolve_loopback(id_priv); |
f17df3b0 SH |
2787 | } else { |
2788 | if (dst_addr->sa_family == AF_IB) { | |
2789 | ret = cma_resolve_ib_addr(id_priv); | |
2790 | } else { | |
2791 | ret = rdma_resolve_ip(&addr_client, cma_src_addr(id_priv), | |
2792 | dst_addr, &id->route.addr.dev_addr, | |
2793 | timeout_ms, addr_handler, id_priv); | |
2794 | } | |
2795 | } | |
e51060f0 SH |
2796 | if (ret) |
2797 | goto err; | |
2798 | ||
2799 | return 0; | |
2800 | err: | |
550e5ca7 | 2801 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
2802 | cma_deref_id(id_priv); |
2803 | return ret; | |
2804 | } | |
2805 | EXPORT_SYMBOL(rdma_resolve_addr); | |
2806 | ||
a9bb7912 HS |
2807 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
2808 | { | |
2809 | struct rdma_id_private *id_priv; | |
2810 | unsigned long flags; | |
2811 | int ret; | |
2812 | ||
2813 | id_priv = container_of(id, struct rdma_id_private, id); | |
2814 | spin_lock_irqsave(&id_priv->lock, flags); | |
c8dea2f9 | 2815 | if (reuse || id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2816 | id_priv->reuseaddr = reuse; |
2817 | ret = 0; | |
2818 | } else { | |
2819 | ret = -EINVAL; | |
2820 | } | |
2821 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2822 | return ret; | |
2823 | } | |
2824 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
2825 | ||
68602120 SH |
2826 | int rdma_set_afonly(struct rdma_cm_id *id, int afonly) |
2827 | { | |
2828 | struct rdma_id_private *id_priv; | |
2829 | unsigned long flags; | |
2830 | int ret; | |
2831 | ||
2832 | id_priv = container_of(id, struct rdma_id_private, id); | |
2833 | spin_lock_irqsave(&id_priv->lock, flags); | |
2834 | if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { | |
2835 | id_priv->options |= (1 << CMA_OPTION_AFONLY); | |
2836 | id_priv->afonly = afonly; | |
2837 | ret = 0; | |
2838 | } else { | |
2839 | ret = -EINVAL; | |
2840 | } | |
2841 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2842 | return ret; | |
2843 | } | |
2844 | EXPORT_SYMBOL(rdma_set_afonly); | |
2845 | ||
e51060f0 SH |
2846 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
2847 | struct rdma_id_private *id_priv) | |
2848 | { | |
58afdcb7 SH |
2849 | struct sockaddr *addr; |
2850 | struct sockaddr_ib *sib; | |
2851 | u64 sid, mask; | |
2852 | __be16 port; | |
e51060f0 | 2853 | |
f4753834 | 2854 | addr = cma_src_addr(id_priv); |
58afdcb7 SH |
2855 | port = htons(bind_list->port); |
2856 | ||
2857 | switch (addr->sa_family) { | |
2858 | case AF_INET: | |
2859 | ((struct sockaddr_in *) addr)->sin_port = port; | |
2860 | break; | |
2861 | case AF_INET6: | |
2862 | ((struct sockaddr_in6 *) addr)->sin6_port = port; | |
2863 | break; | |
2864 | case AF_IB: | |
2865 | sib = (struct sockaddr_ib *) addr; | |
2866 | sid = be64_to_cpu(sib->sib_sid); | |
2867 | mask = be64_to_cpu(sib->sib_sid_mask); | |
2868 | sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port)); | |
2869 | sib->sib_sid_mask = cpu_to_be64(~0ULL); | |
2870 | break; | |
2871 | } | |
e51060f0 SH |
2872 | id_priv->bind_list = bind_list; |
2873 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
2874 | } | |
2875 | ||
aac978e1 HE |
2876 | static int cma_alloc_port(enum rdma_port_space ps, |
2877 | struct rdma_id_private *id_priv, unsigned short snum) | |
e51060f0 SH |
2878 | { |
2879 | struct rdma_bind_list *bind_list; | |
3b069c5d | 2880 | int ret; |
e51060f0 | 2881 | |
cb164b8c | 2882 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
2883 | if (!bind_list) |
2884 | return -ENOMEM; | |
2885 | ||
fa20105e GS |
2886 | ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list, |
2887 | snum); | |
3b069c5d TH |
2888 | if (ret < 0) |
2889 | goto err; | |
aedec080 SH |
2890 | |
2891 | bind_list->ps = ps; | |
3b069c5d | 2892 | bind_list->port = (unsigned short)ret; |
aedec080 SH |
2893 | cma_bind_port(bind_list, id_priv); |
2894 | return 0; | |
3b069c5d | 2895 | err: |
aedec080 | 2896 | kfree(bind_list); |
3b069c5d | 2897 | return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; |
aedec080 | 2898 | } |
e51060f0 | 2899 | |
aac978e1 HE |
2900 | static int cma_alloc_any_port(enum rdma_port_space ps, |
2901 | struct rdma_id_private *id_priv) | |
aedec080 | 2902 | { |
5d7220e8 TH |
2903 | static unsigned int last_used_port; |
2904 | int low, high, remaining; | |
2905 | unsigned int rover; | |
fa20105e | 2906 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 | 2907 | |
fa20105e | 2908 | inet_get_local_port_range(net, &low, &high); |
5d7220e8 | 2909 | remaining = (high - low) + 1; |
63862b5b | 2910 | rover = prandom_u32() % remaining + low; |
5d7220e8 TH |
2911 | retry: |
2912 | if (last_used_port != rover && | |
fa20105e | 2913 | !cma_ps_find(net, ps, (unsigned short)rover)) { |
5d7220e8 TH |
2914 | int ret = cma_alloc_port(ps, id_priv, rover); |
2915 | /* | |
2916 | * Remember previously used port number in order to avoid | |
2917 | * re-using same port immediately after it is closed. | |
2918 | */ | |
2919 | if (!ret) | |
2920 | last_used_port = rover; | |
2921 | if (ret != -EADDRNOTAVAIL) | |
2922 | return ret; | |
e51060f0 | 2923 | } |
5d7220e8 TH |
2924 | if (--remaining) { |
2925 | rover++; | |
2926 | if ((rover < low) || (rover > high)) | |
2927 | rover = low; | |
2928 | goto retry; | |
2929 | } | |
2930 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
2931 | } |
2932 | ||
a9bb7912 HS |
2933 | /* |
2934 | * Check that the requested port is available. This is called when trying to | |
2935 | * bind to a specific port, or when trying to listen on a bound port. In | |
2936 | * the latter case, the provided id_priv may already be on the bind_list, but | |
2937 | * we still need to check that it's okay to start listening. | |
2938 | */ | |
2939 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
2940 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
2941 | { |
2942 | struct rdma_id_private *cur_id; | |
43b752da | 2943 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 2944 | |
f4753834 | 2945 | addr = cma_src_addr(id_priv); |
b67bfe0d | 2946 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { |
a9bb7912 HS |
2947 | if (id_priv == cur_id) |
2948 | continue; | |
3cd96564 | 2949 | |
5b0ec991 SH |
2950 | if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && |
2951 | cur_id->reuseaddr) | |
2952 | continue; | |
e51060f0 | 2953 | |
f4753834 | 2954 | cur_addr = cma_src_addr(cur_id); |
5b0ec991 SH |
2955 | if (id_priv->afonly && cur_id->afonly && |
2956 | (addr->sa_family != cur_addr->sa_family)) | |
2957 | continue; | |
2958 | ||
2959 | if (cma_any_addr(addr) || cma_any_addr(cur_addr)) | |
2960 | return -EADDRNOTAVAIL; | |
2961 | ||
2962 | if (!cma_addr_cmp(addr, cur_addr)) | |
2963 | return -EADDRINUSE; | |
a9bb7912 | 2964 | } |
e51060f0 SH |
2965 | return 0; |
2966 | } | |
2967 | ||
aac978e1 HE |
2968 | static int cma_use_port(enum rdma_port_space ps, |
2969 | struct rdma_id_private *id_priv) | |
a9bb7912 HS |
2970 | { |
2971 | struct rdma_bind_list *bind_list; | |
2972 | unsigned short snum; | |
2973 | int ret; | |
2974 | ||
f4753834 | 2975 | snum = ntohs(cma_port(cma_src_addr(id_priv))); |
a9bb7912 HS |
2976 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
2977 | return -EACCES; | |
2978 | ||
fa20105e | 2979 | bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum); |
a9bb7912 HS |
2980 | if (!bind_list) { |
2981 | ret = cma_alloc_port(ps, id_priv, snum); | |
2982 | } else { | |
2983 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
2984 | if (!ret) | |
2985 | cma_bind_port(bind_list, id_priv); | |
2986 | } | |
2987 | return ret; | |
2988 | } | |
2989 | ||
2990 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
2991 | { | |
2992 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
2993 | int ret = 0; | |
2994 | ||
2995 | mutex_lock(&lock); | |
2996 | if (bind_list->owners.first->next) | |
2997 | ret = cma_check_port(bind_list, id_priv, 0); | |
2998 | mutex_unlock(&lock); | |
2999 | return ret; | |
3000 | } | |
3001 | ||
aac978e1 HE |
3002 | static enum rdma_port_space cma_select_inet_ps( |
3003 | struct rdma_id_private *id_priv) | |
e51060f0 | 3004 | { |
e51060f0 | 3005 | switch (id_priv->id.ps) { |
e51060f0 | 3006 | case RDMA_PS_TCP: |
628e5f6d | 3007 | case RDMA_PS_UDP: |
c8f6a362 | 3008 | case RDMA_PS_IPOIB: |
2d2e9415 | 3009 | case RDMA_PS_IB: |
aac978e1 | 3010 | return id_priv->id.ps; |
e51060f0 | 3011 | default: |
aac978e1 HE |
3012 | |
3013 | return 0; | |
58afdcb7 SH |
3014 | } |
3015 | } | |
3016 | ||
aac978e1 | 3017 | static enum rdma_port_space cma_select_ib_ps(struct rdma_id_private *id_priv) |
58afdcb7 | 3018 | { |
aac978e1 | 3019 | enum rdma_port_space ps = 0; |
58afdcb7 SH |
3020 | struct sockaddr_ib *sib; |
3021 | u64 sid_ps, mask, sid; | |
3022 | ||
f4753834 | 3023 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); |
58afdcb7 SH |
3024 | mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK; |
3025 | sid = be64_to_cpu(sib->sib_sid) & mask; | |
3026 | ||
3027 | if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) { | |
3028 | sid_ps = RDMA_IB_IP_PS_IB; | |
aac978e1 | 3029 | ps = RDMA_PS_IB; |
58afdcb7 SH |
3030 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) && |
3031 | (sid == (RDMA_IB_IP_PS_TCP & mask))) { | |
3032 | sid_ps = RDMA_IB_IP_PS_TCP; | |
aac978e1 | 3033 | ps = RDMA_PS_TCP; |
58afdcb7 SH |
3034 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) && |
3035 | (sid == (RDMA_IB_IP_PS_UDP & mask))) { | |
3036 | sid_ps = RDMA_IB_IP_PS_UDP; | |
aac978e1 | 3037 | ps = RDMA_PS_UDP; |
e51060f0 SH |
3038 | } |
3039 | ||
58afdcb7 SH |
3040 | if (ps) { |
3041 | sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib))); | |
3042 | sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK | | |
3043 | be64_to_cpu(sib->sib_sid_mask)); | |
3044 | } | |
3045 | return ps; | |
3046 | } | |
3047 | ||
3048 | static int cma_get_port(struct rdma_id_private *id_priv) | |
3049 | { | |
aac978e1 | 3050 | enum rdma_port_space ps; |
58afdcb7 SH |
3051 | int ret; |
3052 | ||
f4753834 | 3053 | if (cma_family(id_priv) != AF_IB) |
58afdcb7 SH |
3054 | ps = cma_select_inet_ps(id_priv); |
3055 | else | |
3056 | ps = cma_select_ib_ps(id_priv); | |
3057 | if (!ps) | |
3058 | return -EPROTONOSUPPORT; | |
3059 | ||
e51060f0 | 3060 | mutex_lock(&lock); |
f4753834 | 3061 | if (cma_any_port(cma_src_addr(id_priv))) |
aedec080 | 3062 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
3063 | else |
3064 | ret = cma_use_port(ps, id_priv); | |
3065 | mutex_unlock(&lock); | |
3066 | ||
3067 | return ret; | |
3068 | } | |
3069 | ||
d14714df SH |
3070 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
3071 | struct sockaddr *addr) | |
3072 | { | |
d90f9b35 | 3073 | #if IS_ENABLED(CONFIG_IPV6) |
d14714df SH |
3074 | struct sockaddr_in6 *sin6; |
3075 | ||
3076 | if (addr->sa_family != AF_INET6) | |
3077 | return 0; | |
3078 | ||
3079 | sin6 = (struct sockaddr_in6 *) addr; | |
5462eddd SK |
3080 | |
3081 | if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)) | |
3082 | return 0; | |
3083 | ||
3084 | if (!sin6->sin6_scope_id) | |
d14714df SH |
3085 | return -EINVAL; |
3086 | ||
3087 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
3088 | #endif | |
3089 | return 0; | |
3090 | } | |
3091 | ||
a9bb7912 HS |
3092 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
3093 | { | |
3094 | struct rdma_id_private *id_priv; | |
3095 | int ret; | |
3096 | ||
3097 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3098 | if (id_priv->state == RDMA_CM_IDLE) { |
f4753834 SH |
3099 | id->route.addr.src_addr.ss_family = AF_INET; |
3100 | ret = rdma_bind_addr(id, cma_src_addr(id_priv)); | |
a9bb7912 HS |
3101 | if (ret) |
3102 | return ret; | |
3103 | } | |
3104 | ||
550e5ca7 | 3105 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
3106 | return -EINVAL; |
3107 | ||
3108 | if (id_priv->reuseaddr) { | |
3109 | ret = cma_bind_listen(id_priv); | |
3110 | if (ret) | |
3111 | goto err; | |
3112 | } | |
3113 | ||
3114 | id_priv->backlog = backlog; | |
3115 | if (id->device) { | |
72219cea | 3116 | if (rdma_cap_ib_cm(id->device, 1)) { |
a9bb7912 HS |
3117 | ret = cma_ib_listen(id_priv); |
3118 | if (ret) | |
3119 | goto err; | |
04215330 | 3120 | } else if (rdma_cap_iw_cm(id->device, 1)) { |
a9bb7912 HS |
3121 | ret = cma_iw_listen(id_priv, backlog); |
3122 | if (ret) | |
3123 | goto err; | |
21655afc | 3124 | } else { |
a9bb7912 HS |
3125 | ret = -ENOSYS; |
3126 | goto err; | |
3127 | } | |
3128 | } else | |
3129 | cma_listen_on_all(id_priv); | |
3130 | ||
3131 | return 0; | |
3132 | err: | |
3133 | id_priv->backlog = 0; | |
550e5ca7 | 3134 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
3135 | return ret; |
3136 | } | |
3137 | EXPORT_SYMBOL(rdma_listen); | |
3138 | ||
e51060f0 SH |
3139 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
3140 | { | |
3141 | struct rdma_id_private *id_priv; | |
3142 | int ret; | |
3143 | ||
680f920a SH |
3144 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 && |
3145 | addr->sa_family != AF_IB) | |
e51060f0 SH |
3146 | return -EAFNOSUPPORT; |
3147 | ||
3148 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3149 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
3150 | return -EINVAL; |
3151 | ||
d14714df SH |
3152 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
3153 | if (ret) | |
3154 | goto err1; | |
3155 | ||
7b85627b | 3156 | memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr)); |
8523c048 | 3157 | if (!cma_any_addr(addr)) { |
680f920a | 3158 | ret = cma_translate_addr(addr, &id->route.addr.dev_addr); |
e51060f0 | 3159 | if (ret) |
255d0c14 KK |
3160 | goto err1; |
3161 | ||
be9130cc | 3162 | ret = cma_acquire_dev(id_priv, NULL); |
255d0c14 KK |
3163 | if (ret) |
3164 | goto err1; | |
e51060f0 SH |
3165 | } |
3166 | ||
68602120 SH |
3167 | if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { |
3168 | if (addr->sa_family == AF_INET) | |
3169 | id_priv->afonly = 1; | |
5b0ec991 | 3170 | #if IS_ENABLED(CONFIG_IPV6) |
fa20105e GS |
3171 | else if (addr->sa_family == AF_INET6) { |
3172 | struct net *net = id_priv->id.route.addr.dev_addr.net; | |
3173 | ||
3174 | id_priv->afonly = net->ipv6.sysctl.bindv6only; | |
3175 | } | |
5b0ec991 | 3176 | #endif |
68602120 | 3177 | } |
e51060f0 SH |
3178 | ret = cma_get_port(id_priv); |
3179 | if (ret) | |
255d0c14 | 3180 | goto err2; |
e51060f0 SH |
3181 | |
3182 | return 0; | |
255d0c14 | 3183 | err2: |
a396d43a SH |
3184 | if (id_priv->cma_dev) |
3185 | cma_release_dev(id_priv); | |
255d0c14 | 3186 | err1: |
550e5ca7 | 3187 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
3188 | return ret; |
3189 | } | |
3190 | EXPORT_SYMBOL(rdma_bind_addr); | |
3191 | ||
f4753834 | 3192 | static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv) |
e51060f0 | 3193 | { |
e51060f0 | 3194 | struct cma_hdr *cma_hdr; |
e51060f0 | 3195 | |
01602f11 SH |
3196 | cma_hdr = hdr; |
3197 | cma_hdr->cma_version = CMA_VERSION; | |
f4753834 | 3198 | if (cma_family(id_priv) == AF_INET) { |
1f5175ad AS |
3199 | struct sockaddr_in *src4, *dst4; |
3200 | ||
f4753834 SH |
3201 | src4 = (struct sockaddr_in *) cma_src_addr(id_priv); |
3202 | dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv); | |
1f5175ad | 3203 | |
01602f11 SH |
3204 | cma_set_ip_ver(cma_hdr, 4); |
3205 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
3206 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
3207 | cma_hdr->port = src4->sin_port; | |
e8160e15 | 3208 | } else if (cma_family(id_priv) == AF_INET6) { |
1f5175ad AS |
3209 | struct sockaddr_in6 *src6, *dst6; |
3210 | ||
f4753834 SH |
3211 | src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
3212 | dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv); | |
1f5175ad | 3213 | |
01602f11 SH |
3214 | cma_set_ip_ver(cma_hdr, 6); |
3215 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
3216 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
3217 | cma_hdr->port = src6->sin6_port; | |
e51060f0 SH |
3218 | } |
3219 | return 0; | |
3220 | } | |
3221 | ||
628e5f6d SH |
3222 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
3223 | struct ib_cm_event *ib_event) | |
3224 | { | |
3225 | struct rdma_id_private *id_priv = cm_id->context; | |
3226 | struct rdma_cm_event event; | |
3227 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
3228 | int ret = 0; | |
3229 | ||
37e07cda BVA |
3230 | mutex_lock(&id_priv->handler_mutex); |
3231 | if (id_priv->state != RDMA_CM_CONNECT) | |
3232 | goto out; | |
628e5f6d | 3233 | |
8aa08602 | 3234 | memset(&event, 0, sizeof event); |
628e5f6d SH |
3235 | switch (ib_event->event) { |
3236 | case IB_CM_SIDR_REQ_ERROR: | |
3237 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3238 | event.status = -ETIMEDOUT; | |
3239 | break; | |
3240 | case IB_CM_SIDR_REP_RECEIVED: | |
3241 | event.param.ud.private_data = ib_event->private_data; | |
3242 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
3243 | if (rep->status != IB_SIDR_SUCCESS) { | |
3244 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3245 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
3246 | break; | |
3247 | } | |
5c438135 | 3248 | ret = cma_set_qkey(id_priv, rep->qkey); |
d2ca39f2 YE |
3249 | if (ret) { |
3250 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
5c438135 | 3251 | event.status = ret; |
628e5f6d SH |
3252 | break; |
3253 | } | |
3254 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
3255 | id_priv->id.route.path_rec, | |
3256 | &event.param.ud.ah_attr); | |
3257 | event.param.ud.qp_num = rep->qpn; | |
3258 | event.param.ud.qkey = rep->qkey; | |
3259 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
3260 | event.status = 0; | |
3261 | break; | |
3262 | default: | |
aba25a3e | 3263 | pr_err("RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
3264 | ib_event->event); |
3265 | goto out; | |
3266 | } | |
3267 | ||
3268 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3269 | if (ret) { | |
3270 | /* Destroy the CM ID by returning a non-zero value. */ | |
3271 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 3272 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3273 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3274 | rdma_destroy_id(&id_priv->id); |
3275 | return ret; | |
3276 | } | |
3277 | out: | |
de910bd9 | 3278 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3279 | return ret; |
3280 | } | |
3281 | ||
3282 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
3283 | struct rdma_conn_param *conn_param) | |
3284 | { | |
3285 | struct ib_cm_sidr_req_param req; | |
0c9361fc | 3286 | struct ib_cm_id *id; |
e511d1ae | 3287 | void *private_data; |
e8160e15 | 3288 | int offset, ret; |
628e5f6d | 3289 | |
e511d1ae | 3290 | memset(&req, 0, sizeof req); |
e8160e15 SH |
3291 | offset = cma_user_data_offset(id_priv); |
3292 | req.private_data_len = offset + conn_param->private_data_len; | |
04ded167 SH |
3293 | if (req.private_data_len < conn_param->private_data_len) |
3294 | return -EINVAL; | |
3295 | ||
e8160e15 | 3296 | if (req.private_data_len) { |
e511d1ae SH |
3297 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
3298 | if (!private_data) | |
e8160e15 SH |
3299 | return -ENOMEM; |
3300 | } else { | |
e511d1ae | 3301 | private_data = NULL; |
e8160e15 | 3302 | } |
628e5f6d SH |
3303 | |
3304 | if (conn_param->private_data && conn_param->private_data_len) | |
e511d1ae SH |
3305 | memcpy(private_data + offset, conn_param->private_data, |
3306 | conn_param->private_data_len); | |
628e5f6d | 3307 | |
e511d1ae SH |
3308 | if (private_data) { |
3309 | ret = cma_format_hdr(private_data, id_priv); | |
e8160e15 SH |
3310 | if (ret) |
3311 | goto out; | |
e511d1ae | 3312 | req.private_data = private_data; |
e8160e15 | 3313 | } |
628e5f6d | 3314 | |
0c9361fc JM |
3315 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
3316 | id_priv); | |
3317 | if (IS_ERR(id)) { | |
3318 | ret = PTR_ERR(id); | |
628e5f6d SH |
3319 | goto out; |
3320 | } | |
0c9361fc | 3321 | id_priv->cm_id.ib = id; |
628e5f6d | 3322 | |
f4753834 | 3323 | req.path = id_priv->id.route.path_rec; |
cf53936f | 3324 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
628e5f6d SH |
3325 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
3326 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3327 | ||
3328 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
3329 | if (ret) { | |
3330 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
3331 | id_priv->cm_id.ib = NULL; | |
3332 | } | |
3333 | out: | |
e511d1ae | 3334 | kfree(private_data); |
628e5f6d SH |
3335 | return ret; |
3336 | } | |
3337 | ||
e51060f0 SH |
3338 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
3339 | struct rdma_conn_param *conn_param) | |
3340 | { | |
3341 | struct ib_cm_req_param req; | |
3342 | struct rdma_route *route; | |
3343 | void *private_data; | |
0c9361fc | 3344 | struct ib_cm_id *id; |
e51060f0 SH |
3345 | int offset, ret; |
3346 | ||
3347 | memset(&req, 0, sizeof req); | |
e8160e15 | 3348 | offset = cma_user_data_offset(id_priv); |
e51060f0 | 3349 | req.private_data_len = offset + conn_param->private_data_len; |
04ded167 SH |
3350 | if (req.private_data_len < conn_param->private_data_len) |
3351 | return -EINVAL; | |
3352 | ||
e8160e15 SH |
3353 | if (req.private_data_len) { |
3354 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
3355 | if (!private_data) | |
3356 | return -ENOMEM; | |
3357 | } else { | |
3358 | private_data = NULL; | |
3359 | } | |
e51060f0 SH |
3360 | |
3361 | if (conn_param->private_data && conn_param->private_data_len) | |
3362 | memcpy(private_data + offset, conn_param->private_data, | |
3363 | conn_param->private_data_len); | |
3364 | ||
0c9361fc JM |
3365 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
3366 | if (IS_ERR(id)) { | |
3367 | ret = PTR_ERR(id); | |
e51060f0 SH |
3368 | goto out; |
3369 | } | |
0c9361fc | 3370 | id_priv->cm_id.ib = id; |
e51060f0 SH |
3371 | |
3372 | route = &id_priv->id.route; | |
e8160e15 SH |
3373 | if (private_data) { |
3374 | ret = cma_format_hdr(private_data, id_priv); | |
3375 | if (ret) | |
3376 | goto out; | |
3377 | req.private_data = private_data; | |
3378 | } | |
e51060f0 SH |
3379 | |
3380 | req.primary_path = &route->path_rec[0]; | |
3381 | if (route->num_paths == 2) | |
3382 | req.alternate_path = &route->path_rec[1]; | |
3383 | ||
cf53936f | 3384 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
e51060f0 | 3385 | req.qp_num = id_priv->qp_num; |
18c441a6 | 3386 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
3387 | req.starting_psn = id_priv->seq_num; |
3388 | req.responder_resources = conn_param->responder_resources; | |
3389 | req.initiator_depth = conn_param->initiator_depth; | |
3390 | req.flow_control = conn_param->flow_control; | |
4ede178a SH |
3391 | req.retry_count = min_t(u8, 7, conn_param->retry_count); |
3392 | req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); | |
e51060f0 SH |
3393 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; |
3394 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
3395 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3396 | req.srq = id_priv->srq ? 1 : 0; | |
3397 | ||
3398 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
3399 | out: | |
0c9361fc JM |
3400 | if (ret && !IS_ERR(id)) { |
3401 | ib_destroy_cm_id(id); | |
675a027c KK |
3402 | id_priv->cm_id.ib = NULL; |
3403 | } | |
3404 | ||
e51060f0 SH |
3405 | kfree(private_data); |
3406 | return ret; | |
3407 | } | |
3408 | ||
07ebafba TT |
3409 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
3410 | struct rdma_conn_param *conn_param) | |
3411 | { | |
3412 | struct iw_cm_id *cm_id; | |
07ebafba TT |
3413 | int ret; |
3414 | struct iw_cm_conn_param iw_param; | |
3415 | ||
3416 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
3417 | if (IS_ERR(cm_id)) |
3418 | return PTR_ERR(cm_id); | |
07ebafba | 3419 | |
68cdba06 | 3420 | cm_id->tos = id_priv->tos; |
07ebafba TT |
3421 | id_priv->cm_id.iw = cm_id; |
3422 | ||
24d44a39 SW |
3423 | memcpy(&cm_id->local_addr, cma_src_addr(id_priv), |
3424 | rdma_addr_size(cma_src_addr(id_priv))); | |
3425 | memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv), | |
3426 | rdma_addr_size(cma_dst_addr(id_priv))); | |
07ebafba | 3427 | |
5851bb89 | 3428 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
3429 | if (ret) |
3430 | goto out; | |
07ebafba | 3431 | |
f45ee80e HS |
3432 | if (conn_param) { |
3433 | iw_param.ord = conn_param->initiator_depth; | |
3434 | iw_param.ird = conn_param->responder_resources; | |
3435 | iw_param.private_data = conn_param->private_data; | |
3436 | iw_param.private_data_len = conn_param->private_data_len; | |
3437 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
3438 | } else { | |
3439 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 3440 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 3441 | } |
07ebafba TT |
3442 | ret = iw_cm_connect(cm_id, &iw_param); |
3443 | out: | |
0c9361fc | 3444 | if (ret) { |
675a027c KK |
3445 | iw_destroy_cm_id(cm_id); |
3446 | id_priv->cm_id.iw = NULL; | |
3447 | } | |
07ebafba TT |
3448 | return ret; |
3449 | } | |
3450 | ||
e51060f0 SH |
3451 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3452 | { | |
3453 | struct rdma_id_private *id_priv; | |
3454 | int ret; | |
3455 | ||
3456 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3457 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
3458 | return -EINVAL; |
3459 | ||
3460 | if (!id->qp) { | |
3461 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3462 | id_priv->srq = conn_param->srq; |
3463 | } | |
3464 | ||
72219cea | 3465 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3466 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
3467 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
3468 | else | |
3469 | ret = cma_connect_ib(id_priv, conn_param); | |
04215330 | 3470 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3471 | ret = cma_connect_iw(id_priv, conn_param); |
21655afc | 3472 | else |
e51060f0 | 3473 | ret = -ENOSYS; |
e51060f0 SH |
3474 | if (ret) |
3475 | goto err; | |
3476 | ||
3477 | return 0; | |
3478 | err: | |
550e5ca7 | 3479 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
3480 | return ret; |
3481 | } | |
3482 | EXPORT_SYMBOL(rdma_connect); | |
3483 | ||
3484 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
3485 | struct rdma_conn_param *conn_param) | |
3486 | { | |
3487 | struct ib_cm_rep_param rep; | |
5851bb89 | 3488 | int ret; |
0fe313b0 | 3489 | |
5851bb89 SH |
3490 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
3491 | if (ret) | |
3492 | goto out; | |
0fe313b0 | 3493 | |
5851bb89 SH |
3494 | ret = cma_modify_qp_rts(id_priv, conn_param); |
3495 | if (ret) | |
3496 | goto out; | |
e51060f0 SH |
3497 | |
3498 | memset(&rep, 0, sizeof rep); | |
3499 | rep.qp_num = id_priv->qp_num; | |
3500 | rep.starting_psn = id_priv->seq_num; | |
3501 | rep.private_data = conn_param->private_data; | |
3502 | rep.private_data_len = conn_param->private_data_len; | |
3503 | rep.responder_resources = conn_param->responder_resources; | |
3504 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
3505 | rep.failover_accepted = 0; |
3506 | rep.flow_control = conn_param->flow_control; | |
4ede178a | 3507 | rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); |
e51060f0 SH |
3508 | rep.srq = id_priv->srq ? 1 : 0; |
3509 | ||
0fe313b0 SH |
3510 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
3511 | out: | |
3512 | return ret; | |
e51060f0 SH |
3513 | } |
3514 | ||
07ebafba TT |
3515 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
3516 | struct rdma_conn_param *conn_param) | |
3517 | { | |
3518 | struct iw_cm_conn_param iw_param; | |
3519 | int ret; | |
3520 | ||
5851bb89 | 3521 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
3522 | if (ret) |
3523 | return ret; | |
3524 | ||
3525 | iw_param.ord = conn_param->initiator_depth; | |
3526 | iw_param.ird = conn_param->responder_resources; | |
3527 | iw_param.private_data = conn_param->private_data; | |
3528 | iw_param.private_data_len = conn_param->private_data_len; | |
3529 | if (id_priv->id.qp) { | |
3530 | iw_param.qpn = id_priv->qp_num; | |
3531 | } else | |
3532 | iw_param.qpn = conn_param->qp_num; | |
3533 | ||
3534 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
3535 | } | |
3536 | ||
628e5f6d | 3537 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
5c438135 | 3538 | enum ib_cm_sidr_status status, u32 qkey, |
628e5f6d SH |
3539 | const void *private_data, int private_data_len) |
3540 | { | |
3541 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 3542 | int ret; |
628e5f6d SH |
3543 | |
3544 | memset(&rep, 0, sizeof rep); | |
3545 | rep.status = status; | |
3546 | if (status == IB_SIDR_SUCCESS) { | |
5c438135 | 3547 | ret = cma_set_qkey(id_priv, qkey); |
d2ca39f2 YE |
3548 | if (ret) |
3549 | return ret; | |
628e5f6d | 3550 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 3551 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
3552 | } |
3553 | rep.private_data = private_data; | |
3554 | rep.private_data_len = private_data_len; | |
3555 | ||
3556 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
3557 | } | |
3558 | ||
e51060f0 SH |
3559 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3560 | { | |
3561 | struct rdma_id_private *id_priv; | |
3562 | int ret; | |
3563 | ||
3564 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d NM |
3565 | |
3566 | id_priv->owner = task_pid_nr(current); | |
3567 | ||
550e5ca7 | 3568 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
3569 | return -EINVAL; |
3570 | ||
3571 | if (!id->qp && conn_param) { | |
3572 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3573 | id_priv->srq = conn_param->srq; |
3574 | } | |
3575 | ||
72219cea | 3576 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
f45ee80e HS |
3577 | if (id->qp_type == IB_QPT_UD) { |
3578 | if (conn_param) | |
3579 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 3580 | conn_param->qkey, |
f45ee80e HS |
3581 | conn_param->private_data, |
3582 | conn_param->private_data_len); | |
3583 | else | |
3584 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 3585 | 0, NULL, 0); |
f45ee80e HS |
3586 | } else { |
3587 | if (conn_param) | |
3588 | ret = cma_accept_ib(id_priv, conn_param); | |
3589 | else | |
3590 | ret = cma_rep_recv(id_priv); | |
3591 | } | |
04215330 | 3592 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3593 | ret = cma_accept_iw(id_priv, conn_param); |
21655afc | 3594 | else |
e51060f0 | 3595 | ret = -ENOSYS; |
e51060f0 SH |
3596 | |
3597 | if (ret) | |
3598 | goto reject; | |
3599 | ||
3600 | return 0; | |
3601 | reject: | |
c5483388 | 3602 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
3603 | rdma_reject(id, NULL, 0); |
3604 | return ret; | |
3605 | } | |
3606 | EXPORT_SYMBOL(rdma_accept); | |
3607 | ||
0fe313b0 SH |
3608 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
3609 | { | |
3610 | struct rdma_id_private *id_priv; | |
3611 | int ret; | |
3612 | ||
3613 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3614 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
3615 | return -EINVAL; |
3616 | ||
3617 | switch (id->device->node_type) { | |
3618 | case RDMA_NODE_IB_CA: | |
3619 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
3620 | break; | |
3621 | default: | |
3622 | ret = 0; | |
3623 | break; | |
3624 | } | |
3625 | return ret; | |
3626 | } | |
3627 | EXPORT_SYMBOL(rdma_notify); | |
3628 | ||
e51060f0 SH |
3629 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
3630 | u8 private_data_len) | |
3631 | { | |
3632 | struct rdma_id_private *id_priv; | |
3633 | int ret; | |
3634 | ||
3635 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3636 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3637 | return -EINVAL; |
3638 | ||
72219cea | 3639 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3640 | if (id->qp_type == IB_QPT_UD) |
5c438135 | 3641 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0, |
628e5f6d SH |
3642 | private_data, private_data_len); |
3643 | else | |
3644 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
3645 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
3646 | 0, private_data, private_data_len); | |
04215330 | 3647 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba TT |
3648 | ret = iw_cm_reject(id_priv->cm_id.iw, |
3649 | private_data, private_data_len); | |
21655afc | 3650 | } else |
e51060f0 | 3651 | ret = -ENOSYS; |
21655afc | 3652 | |
e51060f0 SH |
3653 | return ret; |
3654 | } | |
3655 | EXPORT_SYMBOL(rdma_reject); | |
3656 | ||
3657 | int rdma_disconnect(struct rdma_cm_id *id) | |
3658 | { | |
3659 | struct rdma_id_private *id_priv; | |
3660 | int ret; | |
3661 | ||
3662 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3663 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3664 | return -EINVAL; |
3665 | ||
72219cea | 3666 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
c5483388 | 3667 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
3668 | if (ret) |
3669 | goto out; | |
e51060f0 SH |
3670 | /* Initiate or respond to a disconnect. */ |
3671 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
3672 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
04215330 | 3673 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba | 3674 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); |
21655afc | 3675 | } else |
07ebafba | 3676 | ret = -EINVAL; |
21655afc | 3677 | |
e51060f0 SH |
3678 | out: |
3679 | return ret; | |
3680 | } | |
3681 | EXPORT_SYMBOL(rdma_disconnect); | |
3682 | ||
c8f6a362 SH |
3683 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
3684 | { | |
3685 | struct rdma_id_private *id_priv; | |
3686 | struct cma_multicast *mc = multicast->context; | |
3687 | struct rdma_cm_event event; | |
37e07cda | 3688 | int ret = 0; |
c8f6a362 SH |
3689 | |
3690 | id_priv = mc->id_priv; | |
37e07cda BVA |
3691 | mutex_lock(&id_priv->handler_mutex); |
3692 | if (id_priv->state != RDMA_CM_ADDR_BOUND && | |
3693 | id_priv->state != RDMA_CM_ADDR_RESOLVED) | |
3694 | goto out; | |
c8f6a362 | 3695 | |
5c438135 SH |
3696 | if (!status) |
3697 | status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey)); | |
c5483388 | 3698 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
3699 | if (!status && id_priv->id.qp) |
3700 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
46ea5061 | 3701 | be16_to_cpu(multicast->rec.mlid)); |
c5483388 | 3702 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
3703 | |
3704 | memset(&event, 0, sizeof event); | |
3705 | event.status = status; | |
3706 | event.param.ud.private_data = mc->context; | |
3707 | if (!status) { | |
bee3c3c9 MS |
3708 | struct rdma_dev_addr *dev_addr = |
3709 | &id_priv->id.route.addr.dev_addr; | |
3710 | struct net_device *ndev = | |
3711 | dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3712 | enum ib_gid_type gid_type = | |
3713 | id_priv->cma_dev->default_gid_type[id_priv->id.port_num - | |
3714 | rdma_start_port(id_priv->cma_dev->device)]; | |
3715 | ||
c8f6a362 SH |
3716 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; |
3717 | ib_init_ah_from_mcmember(id_priv->id.device, | |
3718 | id_priv->id.port_num, &multicast->rec, | |
bee3c3c9 | 3719 | ndev, gid_type, |
c8f6a362 SH |
3720 | &event.param.ud.ah_attr); |
3721 | event.param.ud.qp_num = 0xFFFFFF; | |
3722 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
bee3c3c9 MS |
3723 | if (ndev) |
3724 | dev_put(ndev); | |
c8f6a362 SH |
3725 | } else |
3726 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
3727 | ||
3728 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3729 | if (ret) { | |
550e5ca7 | 3730 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3731 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3732 | rdma_destroy_id(&id_priv->id); |
3733 | return 0; | |
3734 | } | |
8aa08602 | 3735 | |
37e07cda | 3736 | out: |
de910bd9 | 3737 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3738 | return 0; |
3739 | } | |
3740 | ||
3741 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
3742 | struct sockaddr *addr, union ib_gid *mgid) | |
3743 | { | |
3744 | unsigned char mc_map[MAX_ADDR_LEN]; | |
3745 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3746 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
3747 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
3748 | ||
3749 | if (cma_any_addr(addr)) { | |
3750 | memset(mgid, 0, sizeof *mgid); | |
3751 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 3752 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
3753 | 0xFF10A01B)) { |
3754 | /* IPv6 address is an SA assigned MGID. */ | |
3755 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
5bc2b7b3 SH |
3756 | } else if (addr->sa_family == AF_IB) { |
3757 | memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid); | |
e2e62697 JG |
3758 | } else if ((addr->sa_family == AF_INET6)) { |
3759 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
3760 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3761 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
3762 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 3763 | } else { |
a9e527e3 | 3764 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
3765 | if (id_priv->id.ps == RDMA_PS_UDP) |
3766 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
3767 | *mgid = *(union ib_gid *) (mc_map + 4); |
3768 | } | |
3769 | } | |
3770 | ||
ab15c95a AV |
3771 | static void cma_query_sa_classport_info_cb(int status, |
3772 | struct ib_class_port_info *rec, | |
3773 | void *context) | |
3774 | { | |
3775 | struct class_port_info_context *cb_ctx = context; | |
3776 | ||
3777 | WARN_ON(!context); | |
3778 | ||
3779 | if (status || !rec) { | |
3780 | pr_debug("RDMA CM: %s port %u failed query ClassPortInfo status: %d\n", | |
3781 | cb_ctx->device->name, cb_ctx->port_num, status); | |
3782 | goto out; | |
3783 | } | |
3784 | ||
3785 | memcpy(cb_ctx->class_port_info, rec, sizeof(struct ib_class_port_info)); | |
3786 | ||
3787 | out: | |
3788 | complete(&cb_ctx->done); | |
3789 | } | |
3790 | ||
3791 | static int cma_query_sa_classport_info(struct ib_device *device, u8 port_num, | |
3792 | struct ib_class_port_info *class_port_info) | |
3793 | { | |
3794 | struct class_port_info_context *cb_ctx; | |
3795 | int ret; | |
3796 | ||
3797 | cb_ctx = kmalloc(sizeof(*cb_ctx), GFP_KERNEL); | |
3798 | if (!cb_ctx) | |
3799 | return -ENOMEM; | |
3800 | ||
3801 | cb_ctx->device = device; | |
3802 | cb_ctx->class_port_info = class_port_info; | |
3803 | cb_ctx->port_num = port_num; | |
3804 | init_completion(&cb_ctx->done); | |
3805 | ||
3806 | ret = ib_sa_classport_info_rec_query(&sa_client, device, port_num, | |
3807 | CMA_QUERY_CLASSPORT_INFO_TIMEOUT, | |
3808 | GFP_KERNEL, cma_query_sa_classport_info_cb, | |
3809 | cb_ctx, &cb_ctx->sa_query); | |
3810 | if (ret < 0) { | |
3811 | pr_err("RDMA CM: %s port %u failed to send ClassPortInfo query, ret: %d\n", | |
3812 | device->name, port_num, ret); | |
3813 | goto out; | |
3814 | } | |
3815 | ||
3816 | wait_for_completion(&cb_ctx->done); | |
3817 | ||
3818 | out: | |
3819 | kfree(cb_ctx); | |
3820 | return ret; | |
3821 | } | |
3822 | ||
c8f6a362 SH |
3823 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, |
3824 | struct cma_multicast *mc) | |
3825 | { | |
3826 | struct ib_sa_mcmember_rec rec; | |
ab15c95a | 3827 | struct ib_class_port_info class_port_info; |
c8f6a362 SH |
3828 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
3829 | ib_sa_comp_mask comp_mask; | |
3830 | int ret; | |
3831 | ||
3832 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
3833 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
3834 | &rec.mgid, &rec); | |
3835 | if (ret) | |
3836 | return ret; | |
3837 | ||
5bc2b7b3 SH |
3838 | ret = cma_set_qkey(id_priv, 0); |
3839 | if (ret) | |
3840 | return ret; | |
3841 | ||
3f446754 | 3842 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
5bc2b7b3 | 3843 | rec.qkey = cpu_to_be32(id_priv->qkey); |
6f8372b6 | 3844 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 | 3845 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
ab15c95a AV |
3846 | rec.join_state = mc->join_state; |
3847 | ||
3848 | if (rec.join_state == BIT(SENDONLY_FULLMEMBER_JOIN)) { | |
3849 | ret = cma_query_sa_classport_info(id_priv->id.device, | |
3850 | id_priv->id.port_num, | |
3851 | &class_port_info); | |
3852 | ||
3853 | if (ret) | |
3854 | return ret; | |
3855 | ||
3856 | if (!(ib_get_cpi_capmask2(&class_port_info) & | |
3857 | IB_SA_CAP_MASK2_SENDONLY_FULL_MEM_SUPPORT)) { | |
3858 | pr_warn("RDMA CM: %s port %u Unable to multicast join\n" | |
3859 | "RDMA CM: SM doesn't support Send Only Full Member option\n", | |
3860 | id_priv->id.device->name, id_priv->id.port_num); | |
3861 | return -EOPNOTSUPP; | |
3862 | } | |
3863 | } | |
c8f6a362 SH |
3864 | |
3865 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
3866 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
3867 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
3868 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
3869 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
3870 | ||
84adeee9 YE |
3871 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
3872 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2a22fb8c DB |
3873 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
3874 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
3875 | IB_SA_MCMEMBER_REC_MTU | | |
3876 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
84adeee9 | 3877 | |
c8f6a362 SH |
3878 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
3879 | id_priv->id.port_num, &rec, | |
3880 | comp_mask, GFP_KERNEL, | |
3881 | cma_ib_mc_handler, mc); | |
8c6ffba0 | 3882 | return PTR_ERR_OR_ZERO(mc->multicast.ib); |
c8f6a362 SH |
3883 | } |
3884 | ||
3c86aa70 EC |
3885 | static void iboe_mcast_work_handler(struct work_struct *work) |
3886 | { | |
3887 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
3888 | struct cma_multicast *mc = mw->mc; | |
3889 | struct ib_sa_multicast *m = mc->multicast.ib; | |
3890 | ||
3891 | mc->multicast.ib->context = mc; | |
3892 | cma_ib_mc_handler(0, m); | |
3893 | kref_put(&mc->mcref, release_mc); | |
3894 | kfree(mw); | |
3895 | } | |
3896 | ||
3897 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) | |
3898 | { | |
3899 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
3900 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
3901 | ||
3902 | if (cma_any_addr(addr)) { | |
3903 | memset(mgid, 0, sizeof *mgid); | |
3904 | } else if (addr->sa_family == AF_INET6) { | |
3905 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
3906 | } else { | |
3907 | mgid->raw[0] = 0xff; | |
3908 | mgid->raw[1] = 0x0e; | |
3909 | mgid->raw[2] = 0; | |
3910 | mgid->raw[3] = 0; | |
3911 | mgid->raw[4] = 0; | |
3912 | mgid->raw[5] = 0; | |
3913 | mgid->raw[6] = 0; | |
3914 | mgid->raw[7] = 0; | |
3915 | mgid->raw[8] = 0; | |
3916 | mgid->raw[9] = 0; | |
3917 | mgid->raw[10] = 0xff; | |
3918 | mgid->raw[11] = 0xff; | |
3919 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
3920 | } | |
3921 | } | |
3922 | ||
3923 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
3924 | struct cma_multicast *mc) | |
3925 | { | |
3926 | struct iboe_mcast_work *work; | |
3927 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
bee3c3c9 | 3928 | int err = 0; |
3c86aa70 EC |
3929 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; |
3930 | struct net_device *ndev = NULL; | |
bee3c3c9 | 3931 | enum ib_gid_type gid_type; |
ab15c95a AV |
3932 | bool send_only; |
3933 | ||
3934 | send_only = mc->join_state == BIT(SENDONLY_FULLMEMBER_JOIN); | |
3c86aa70 EC |
3935 | |
3936 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
3937 | return -EINVAL; | |
3938 | ||
3939 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3940 | if (!work) | |
3941 | return -ENOMEM; | |
3942 | ||
3943 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
3944 | if (!mc->multicast.ib) { | |
3945 | err = -ENOMEM; | |
3946 | goto out1; | |
3947 | } | |
3948 | ||
3949 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); | |
3950 | ||
3951 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
3952 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3953 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
3954 | ||
3955 | if (dev_addr->bound_dev_if) | |
3956 | ndev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3957 | if (!ndev) { | |
3958 | err = -ENODEV; | |
3959 | goto out2; | |
3960 | } | |
3961 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
3962 | mc->multicast.ib->rec.hop_limit = 1; | |
3963 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
bee3c3c9 MS |
3964 | |
3965 | gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num - | |
3966 | rdma_start_port(id_priv->cma_dev->device)]; | |
3967 | if (addr->sa_family == AF_INET) { | |
c65f6c5a AV |
3968 | if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) { |
3969 | mc->multicast.ib->rec.hop_limit = IPV6_DEFAULT_HOPLIMIT; | |
ab15c95a AV |
3970 | if (!send_only) { |
3971 | err = cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid, | |
3972 | true); | |
3973 | if (!err) | |
3974 | mc->igmp_joined = true; | |
3975 | } | |
bee3c3c9 MS |
3976 | } |
3977 | } else { | |
3978 | if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) | |
3979 | err = -ENOTSUPP; | |
3980 | } | |
3c86aa70 | 3981 | dev_put(ndev); |
bee3c3c9 MS |
3982 | if (err || !mc->multicast.ib->rec.mtu) { |
3983 | if (!err) | |
3984 | err = -EINVAL; | |
3c86aa70 EC |
3985 | goto out2; |
3986 | } | |
7b85627b MS |
3987 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
3988 | &mc->multicast.ib->rec.port_gid); | |
3c86aa70 EC |
3989 | work->id = id_priv; |
3990 | work->mc = mc; | |
3991 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
3992 | kref_get(&mc->mcref); | |
3993 | queue_work(cma_wq, &work->work); | |
3994 | ||
3995 | return 0; | |
3996 | ||
3997 | out2: | |
3998 | kfree(mc->multicast.ib); | |
3999 | out1: | |
4000 | kfree(work); | |
4001 | return err; | |
4002 | } | |
4003 | ||
c8f6a362 | 4004 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
ab15c95a | 4005 | u8 join_state, void *context) |
c8f6a362 SH |
4006 | { |
4007 | struct rdma_id_private *id_priv; | |
4008 | struct cma_multicast *mc; | |
4009 | int ret; | |
4010 | ||
4011 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
4012 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
4013 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
4014 | return -EINVAL; |
4015 | ||
4016 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
4017 | if (!mc) | |
4018 | return -ENOMEM; | |
4019 | ||
ef560861 | 4020 | memcpy(&mc->addr, addr, rdma_addr_size(addr)); |
c8f6a362 SH |
4021 | mc->context = context; |
4022 | mc->id_priv = id_priv; | |
bee3c3c9 | 4023 | mc->igmp_joined = false; |
ab15c95a | 4024 | mc->join_state = join_state; |
c8f6a362 SH |
4025 | spin_lock(&id_priv->lock); |
4026 | list_add(&mc->list, &id_priv->mc_list); | |
4027 | spin_unlock(&id_priv->lock); | |
4028 | ||
5d9fb044 | 4029 | if (rdma_protocol_roce(id->device, id->port_num)) { |
5c9a5282 MW |
4030 | kref_init(&mc->mcref); |
4031 | ret = cma_iboe_join_multicast(id_priv, mc); | |
a31ad3b0 | 4032 | } else if (rdma_cap_ib_mcast(id->device, id->port_num)) |
5c9a5282 MW |
4033 | ret = cma_join_ib_multicast(id_priv, mc); |
4034 | else | |
c8f6a362 | 4035 | ret = -ENOSYS; |
c8f6a362 SH |
4036 | |
4037 | if (ret) { | |
4038 | spin_lock_irq(&id_priv->lock); | |
4039 | list_del(&mc->list); | |
4040 | spin_unlock_irq(&id_priv->lock); | |
4041 | kfree(mc); | |
4042 | } | |
4043 | return ret; | |
4044 | } | |
4045 | EXPORT_SYMBOL(rdma_join_multicast); | |
4046 | ||
4047 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
4048 | { | |
4049 | struct rdma_id_private *id_priv; | |
4050 | struct cma_multicast *mc; | |
4051 | ||
4052 | id_priv = container_of(id, struct rdma_id_private, id); | |
4053 | spin_lock_irq(&id_priv->lock); | |
4054 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
ef560861 | 4055 | if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) { |
c8f6a362 SH |
4056 | list_del(&mc->list); |
4057 | spin_unlock_irq(&id_priv->lock); | |
4058 | ||
4059 | if (id->qp) | |
4060 | ib_detach_mcast(id->qp, | |
4061 | &mc->multicast.ib->rec.mgid, | |
46ea5061 | 4062 | be16_to_cpu(mc->multicast.ib->rec.mlid)); |
5c9a5282 MW |
4063 | |
4064 | BUG_ON(id_priv->cma_dev->device != id->device); | |
4065 | ||
a31ad3b0 | 4066 | if (rdma_cap_ib_mcast(id->device, id->port_num)) { |
5c9a5282 MW |
4067 | ib_sa_free_multicast(mc->multicast.ib); |
4068 | kfree(mc); | |
bee3c3c9 MS |
4069 | } else if (rdma_protocol_roce(id->device, id->port_num)) { |
4070 | if (mc->igmp_joined) { | |
4071 | struct rdma_dev_addr *dev_addr = | |
4072 | &id->route.addr.dev_addr; | |
4073 | struct net_device *ndev = NULL; | |
4074 | ||
4075 | if (dev_addr->bound_dev_if) | |
4076 | ndev = dev_get_by_index(&init_net, | |
4077 | dev_addr->bound_dev_if); | |
4078 | if (ndev) { | |
4079 | cma_igmp_send(ndev, | |
4080 | &mc->multicast.ib->rec.mgid, | |
4081 | false); | |
4082 | dev_put(ndev); | |
4083 | } | |
4084 | mc->igmp_joined = false; | |
4085 | } | |
5c9a5282 | 4086 | kref_put(&mc->mcref, release_mc); |
bee3c3c9 | 4087 | } |
c8f6a362 SH |
4088 | return; |
4089 | } | |
4090 | } | |
4091 | spin_unlock_irq(&id_priv->lock); | |
4092 | } | |
4093 | EXPORT_SYMBOL(rdma_leave_multicast); | |
4094 | ||
dd5bdff8 OG |
4095 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
4096 | { | |
4097 | struct rdma_dev_addr *dev_addr; | |
4098 | struct cma_ndev_work *work; | |
4099 | ||
4100 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
4101 | ||
6266ed6e | 4102 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
fa20105e | 4103 | (net_eq(dev_net(ndev), dev_addr->net)) && |
dd5bdff8 | 4104 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
aba25a3e PP |
4105 | pr_info("RDMA CM addr change for ndev %s used by id %p\n", |
4106 | ndev->name, &id_priv->id); | |
dd5bdff8 OG |
4107 | work = kzalloc(sizeof *work, GFP_KERNEL); |
4108 | if (!work) | |
4109 | return -ENOMEM; | |
4110 | ||
4111 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
4112 | work->id = id_priv; | |
4113 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
4114 | atomic_inc(&id_priv->refcount); | |
4115 | queue_work(cma_wq, &work->work); | |
4116 | } | |
4117 | ||
4118 | return 0; | |
4119 | } | |
4120 | ||
4121 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
351638e7 | 4122 | void *ptr) |
dd5bdff8 | 4123 | { |
351638e7 | 4124 | struct net_device *ndev = netdev_notifier_info_to_dev(ptr); |
dd5bdff8 OG |
4125 | struct cma_device *cma_dev; |
4126 | struct rdma_id_private *id_priv; | |
4127 | int ret = NOTIFY_DONE; | |
4128 | ||
dd5bdff8 OG |
4129 | if (event != NETDEV_BONDING_FAILOVER) |
4130 | return NOTIFY_DONE; | |
4131 | ||
4132 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
4133 | return NOTIFY_DONE; | |
4134 | ||
4135 | mutex_lock(&lock); | |
4136 | list_for_each_entry(cma_dev, &dev_list, list) | |
4137 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
4138 | ret = cma_netdev_change(ndev, id_priv); | |
4139 | if (ret) | |
4140 | goto out; | |
4141 | } | |
4142 | ||
4143 | out: | |
4144 | mutex_unlock(&lock); | |
4145 | return ret; | |
4146 | } | |
4147 | ||
4148 | static struct notifier_block cma_nb = { | |
4149 | .notifier_call = cma_netdev_callback | |
4150 | }; | |
4151 | ||
e51060f0 SH |
4152 | static void cma_add_one(struct ib_device *device) |
4153 | { | |
4154 | struct cma_device *cma_dev; | |
4155 | struct rdma_id_private *id_priv; | |
045959db MB |
4156 | unsigned int i; |
4157 | unsigned long supported_gids = 0; | |
e51060f0 SH |
4158 | |
4159 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
4160 | if (!cma_dev) | |
4161 | return; | |
4162 | ||
4163 | cma_dev->device = device; | |
045959db MB |
4164 | cma_dev->default_gid_type = kcalloc(device->phys_port_cnt, |
4165 | sizeof(*cma_dev->default_gid_type), | |
4166 | GFP_KERNEL); | |
4167 | if (!cma_dev->default_gid_type) { | |
4168 | kfree(cma_dev); | |
4169 | return; | |
4170 | } | |
4171 | for (i = rdma_start_port(device); i <= rdma_end_port(device); i++) { | |
4172 | supported_gids = roce_gid_type_mask_support(device, i); | |
4173 | WARN_ON(!supported_gids); | |
4174 | cma_dev->default_gid_type[i - rdma_start_port(device)] = | |
4175 | find_first_bit(&supported_gids, BITS_PER_LONG); | |
4176 | } | |
e51060f0 SH |
4177 | |
4178 | init_completion(&cma_dev->comp); | |
4179 | atomic_set(&cma_dev->refcount, 1); | |
4180 | INIT_LIST_HEAD(&cma_dev->id_list); | |
4181 | ib_set_client_data(device, &cma_client, cma_dev); | |
4182 | ||
4183 | mutex_lock(&lock); | |
4184 | list_add_tail(&cma_dev->list, &dev_list); | |
4185 | list_for_each_entry(id_priv, &listen_any_list, list) | |
4186 | cma_listen_on_dev(id_priv, cma_dev); | |
4187 | mutex_unlock(&lock); | |
e51060f0 SH |
4188 | } |
4189 | ||
4190 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
4191 | { | |
a1b1b61f | 4192 | struct rdma_cm_event event; |
550e5ca7 | 4193 | enum rdma_cm_state state; |
de910bd9 | 4194 | int ret = 0; |
e51060f0 SH |
4195 | |
4196 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
4197 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
4198 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
4199 | return 0; |
4200 | ||
4201 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 4202 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
4203 | |
4204 | /* Check for destruction from another callback. */ | |
550e5ca7 | 4205 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 4206 | goto out; |
e51060f0 | 4207 | |
a1b1b61f SH |
4208 | memset(&event, 0, sizeof event); |
4209 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
4210 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
4211 | out: | |
4212 | mutex_unlock(&id_priv->handler_mutex); | |
4213 | return ret; | |
e51060f0 SH |
4214 | } |
4215 | ||
4216 | static void cma_process_remove(struct cma_device *cma_dev) | |
4217 | { | |
e51060f0 SH |
4218 | struct rdma_id_private *id_priv; |
4219 | int ret; | |
4220 | ||
e51060f0 SH |
4221 | mutex_lock(&lock); |
4222 | while (!list_empty(&cma_dev->id_list)) { | |
4223 | id_priv = list_entry(cma_dev->id_list.next, | |
4224 | struct rdma_id_private, list); | |
4225 | ||
d02d1f53 | 4226 | list_del(&id_priv->listen_list); |
94de178a | 4227 | list_del_init(&id_priv->list); |
e51060f0 SH |
4228 | atomic_inc(&id_priv->refcount); |
4229 | mutex_unlock(&lock); | |
4230 | ||
d02d1f53 | 4231 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
4232 | cma_deref_id(id_priv); |
4233 | if (ret) | |
4234 | rdma_destroy_id(&id_priv->id); | |
4235 | ||
4236 | mutex_lock(&lock); | |
4237 | } | |
4238 | mutex_unlock(&lock); | |
4239 | ||
4240 | cma_deref_dev(cma_dev); | |
4241 | wait_for_completion(&cma_dev->comp); | |
4242 | } | |
4243 | ||
7c1eb45a | 4244 | static void cma_remove_one(struct ib_device *device, void *client_data) |
e51060f0 | 4245 | { |
7c1eb45a | 4246 | struct cma_device *cma_dev = client_data; |
e51060f0 | 4247 | |
e51060f0 SH |
4248 | if (!cma_dev) |
4249 | return; | |
4250 | ||
4251 | mutex_lock(&lock); | |
4252 | list_del(&cma_dev->list); | |
4253 | mutex_unlock(&lock); | |
4254 | ||
4255 | cma_process_remove(cma_dev); | |
045959db | 4256 | kfree(cma_dev->default_gid_type); |
e51060f0 SH |
4257 | kfree(cma_dev); |
4258 | } | |
4259 | ||
753f618a NM |
4260 | static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) |
4261 | { | |
4262 | struct nlmsghdr *nlh; | |
4263 | struct rdma_cm_id_stats *id_stats; | |
4264 | struct rdma_id_private *id_priv; | |
4265 | struct rdma_cm_id *id = NULL; | |
4266 | struct cma_device *cma_dev; | |
4267 | int i_dev = 0, i_id = 0; | |
4268 | ||
4269 | /* | |
4270 | * We export all of the IDs as a sequence of messages. Each | |
4271 | * ID gets its own netlink message. | |
4272 | */ | |
4273 | mutex_lock(&lock); | |
4274 | ||
4275 | list_for_each_entry(cma_dev, &dev_list, list) { | |
4276 | if (i_dev < cb->args[0]) { | |
4277 | i_dev++; | |
4278 | continue; | |
4279 | } | |
4280 | ||
4281 | i_id = 0; | |
4282 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
4283 | if (i_id < cb->args[1]) { | |
4284 | i_id++; | |
4285 | continue; | |
4286 | } | |
4287 | ||
4288 | id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, | |
4289 | sizeof *id_stats, RDMA_NL_RDMA_CM, | |
30dc5e63 TN |
4290 | RDMA_NL_RDMA_CM_ID_STATS, |
4291 | NLM_F_MULTI); | |
753f618a NM |
4292 | if (!id_stats) |
4293 | goto out; | |
4294 | ||
4295 | memset(id_stats, 0, sizeof *id_stats); | |
4296 | id = &id_priv->id; | |
4297 | id_stats->node_type = id->route.addr.dev_addr.dev_type; | |
4298 | id_stats->port_num = id->port_num; | |
4299 | id_stats->bound_dev_if = | |
4300 | id->route.addr.dev_addr.bound_dev_if; | |
4301 | ||
ce117ffa SH |
4302 | if (ibnl_put_attr(skb, nlh, |
4303 | rdma_addr_size(cma_src_addr(id_priv)), | |
4304 | cma_src_addr(id_priv), | |
4305 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) | |
4306 | goto out; | |
4307 | if (ibnl_put_attr(skb, nlh, | |
4308 | rdma_addr_size(cma_src_addr(id_priv)), | |
4309 | cma_dst_addr(id_priv), | |
4310 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) | |
4311 | goto out; | |
753f618a | 4312 | |
83e9502d | 4313 | id_stats->pid = id_priv->owner; |
753f618a NM |
4314 | id_stats->port_space = id->ps; |
4315 | id_stats->cm_state = id_priv->state; | |
4316 | id_stats->qp_num = id_priv->qp_num; | |
4317 | id_stats->qp_type = id->qp_type; | |
4318 | ||
4319 | i_id++; | |
4320 | } | |
4321 | ||
4322 | cb->args[1] = 0; | |
4323 | i_dev++; | |
4324 | } | |
4325 | ||
4326 | out: | |
4327 | mutex_unlock(&lock); | |
4328 | cb->args[0] = i_dev; | |
4329 | cb->args[1] = i_id; | |
4330 | ||
4331 | return skb->len; | |
4332 | } | |
4333 | ||
4334 | static const struct ibnl_client_cbs cma_cb_table[] = { | |
809d5fc9 G |
4335 | [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats, |
4336 | .module = THIS_MODULE }, | |
753f618a NM |
4337 | }; |
4338 | ||
4be74b42 HE |
4339 | static int cma_init_net(struct net *net) |
4340 | { | |
4341 | struct cma_pernet *pernet = cma_pernet(net); | |
4342 | ||
4343 | idr_init(&pernet->tcp_ps); | |
4344 | idr_init(&pernet->udp_ps); | |
4345 | idr_init(&pernet->ipoib_ps); | |
4346 | idr_init(&pernet->ib_ps); | |
4347 | ||
4348 | return 0; | |
4349 | } | |
4350 | ||
4351 | static void cma_exit_net(struct net *net) | |
4352 | { | |
4353 | struct cma_pernet *pernet = cma_pernet(net); | |
4354 | ||
4355 | idr_destroy(&pernet->tcp_ps); | |
4356 | idr_destroy(&pernet->udp_ps); | |
4357 | idr_destroy(&pernet->ipoib_ps); | |
4358 | idr_destroy(&pernet->ib_ps); | |
4359 | } | |
4360 | ||
4361 | static struct pernet_operations cma_pernet_operations = { | |
4362 | .init = cma_init_net, | |
4363 | .exit = cma_exit_net, | |
4364 | .id = &cma_pernet_id, | |
4365 | .size = sizeof(struct cma_pernet), | |
4366 | }; | |
4367 | ||
716abb1f | 4368 | static int __init cma_init(void) |
e51060f0 | 4369 | { |
5d7220e8 | 4370 | int ret; |
227b60f5 | 4371 | |
c7f743a6 | 4372 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
4373 | if (!cma_wq) |
4374 | return -ENOMEM; | |
4375 | ||
4be74b42 HE |
4376 | ret = register_pernet_subsys(&cma_pernet_operations); |
4377 | if (ret) | |
4378 | goto err_wq; | |
4379 | ||
c1a0b23b | 4380 | ib_sa_register_client(&sa_client); |
7a118df3 | 4381 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 4382 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 4383 | |
e51060f0 SH |
4384 | ret = ib_register_client(&cma_client); |
4385 | if (ret) | |
4386 | goto err; | |
753f618a | 4387 | |
2fa2d4fb MB |
4388 | if (ibnl_add_client(RDMA_NL_RDMA_CM, ARRAY_SIZE(cma_cb_table), |
4389 | cma_cb_table)) | |
aba25a3e | 4390 | pr_warn("RDMA CMA: failed to add netlink callback\n"); |
045959db | 4391 | cma_configfs_init(); |
753f618a | 4392 | |
e51060f0 SH |
4393 | return 0; |
4394 | ||
4395 | err: | |
dd5bdff8 | 4396 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 4397 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 4398 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4399 | err_wq: |
e51060f0 SH |
4400 | destroy_workqueue(cma_wq); |
4401 | return ret; | |
4402 | } | |
4403 | ||
716abb1f | 4404 | static void __exit cma_cleanup(void) |
e51060f0 | 4405 | { |
045959db | 4406 | cma_configfs_exit(); |
753f618a | 4407 | ibnl_remove_client(RDMA_NL_RDMA_CM); |
e51060f0 | 4408 | ib_unregister_client(&cma_client); |
dd5bdff8 | 4409 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 4410 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 4411 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4412 | unregister_pernet_subsys(&cma_pernet_operations); |
e51060f0 | 4413 | destroy_workqueue(cma_wq); |
e51060f0 SH |
4414 | } |
4415 | ||
4416 | module_init(cma_init); | |
4417 | module_exit(cma_cleanup); |