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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 | |
d5bb7599 | 71 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 72 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 73 | #define CMA_IBOE_PACKET_LIFETIME 18 |
e51060f0 | 74 | |
2b1b5b60 SG |
75 | static const char * const cma_events[] = { |
76 | [RDMA_CM_EVENT_ADDR_RESOLVED] = "address resolved", | |
77 | [RDMA_CM_EVENT_ADDR_ERROR] = "address error", | |
78 | [RDMA_CM_EVENT_ROUTE_RESOLVED] = "route resolved ", | |
79 | [RDMA_CM_EVENT_ROUTE_ERROR] = "route error", | |
80 | [RDMA_CM_EVENT_CONNECT_REQUEST] = "connect request", | |
81 | [RDMA_CM_EVENT_CONNECT_RESPONSE] = "connect response", | |
82 | [RDMA_CM_EVENT_CONNECT_ERROR] = "connect error", | |
83 | [RDMA_CM_EVENT_UNREACHABLE] = "unreachable", | |
84 | [RDMA_CM_EVENT_REJECTED] = "rejected", | |
85 | [RDMA_CM_EVENT_ESTABLISHED] = "established", | |
86 | [RDMA_CM_EVENT_DISCONNECTED] = "disconnected", | |
87 | [RDMA_CM_EVENT_DEVICE_REMOVAL] = "device removal", | |
88 | [RDMA_CM_EVENT_MULTICAST_JOIN] = "multicast join", | |
89 | [RDMA_CM_EVENT_MULTICAST_ERROR] = "multicast error", | |
90 | [RDMA_CM_EVENT_ADDR_CHANGE] = "address change", | |
91 | [RDMA_CM_EVENT_TIMEWAIT_EXIT] = "timewait exit", | |
92 | }; | |
93 | ||
db7489e0 | 94 | const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event) |
2b1b5b60 SG |
95 | { |
96 | size_t index = event; | |
97 | ||
98 | return (index < ARRAY_SIZE(cma_events) && cma_events[index]) ? | |
99 | cma_events[index] : "unrecognized event"; | |
100 | } | |
101 | EXPORT_SYMBOL(rdma_event_msg); | |
102 | ||
e51060f0 | 103 | static void cma_add_one(struct ib_device *device); |
7c1eb45a | 104 | static void cma_remove_one(struct ib_device *device, void *client_data); |
e51060f0 SH |
105 | |
106 | static struct ib_client cma_client = { | |
107 | .name = "cma", | |
108 | .add = cma_add_one, | |
109 | .remove = cma_remove_one | |
110 | }; | |
111 | ||
c1a0b23b | 112 | static struct ib_sa_client sa_client; |
7a118df3 | 113 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
114 | static LIST_HEAD(dev_list); |
115 | static LIST_HEAD(listen_any_list); | |
116 | static DEFINE_MUTEX(lock); | |
117 | static struct workqueue_struct *cma_wq; | |
4be74b42 | 118 | static int cma_pernet_id; |
e51060f0 | 119 | |
4be74b42 HE |
120 | struct cma_pernet { |
121 | struct idr tcp_ps; | |
122 | struct idr udp_ps; | |
123 | struct idr ipoib_ps; | |
124 | struct idr ib_ps; | |
125 | }; | |
126 | ||
127 | static struct cma_pernet *cma_pernet(struct net *net) | |
128 | { | |
129 | return net_generic(net, cma_pernet_id); | |
130 | } | |
131 | ||
132 | static struct idr *cma_pernet_idr(struct net *net, enum rdma_port_space ps) | |
aac978e1 | 133 | { |
4be74b42 HE |
134 | struct cma_pernet *pernet = cma_pernet(net); |
135 | ||
aac978e1 HE |
136 | switch (ps) { |
137 | case RDMA_PS_TCP: | |
4be74b42 | 138 | return &pernet->tcp_ps; |
aac978e1 | 139 | case RDMA_PS_UDP: |
4be74b42 | 140 | return &pernet->udp_ps; |
aac978e1 | 141 | case RDMA_PS_IPOIB: |
4be74b42 | 142 | return &pernet->ipoib_ps; |
aac978e1 | 143 | case RDMA_PS_IB: |
4be74b42 | 144 | return &pernet->ib_ps; |
aac978e1 HE |
145 | default: |
146 | return NULL; | |
147 | } | |
148 | } | |
149 | ||
e51060f0 SH |
150 | struct cma_device { |
151 | struct list_head list; | |
152 | struct ib_device *device; | |
e51060f0 SH |
153 | struct completion comp; |
154 | atomic_t refcount; | |
155 | struct list_head id_list; | |
045959db | 156 | enum ib_gid_type *default_gid_type; |
e51060f0 SH |
157 | }; |
158 | ||
e51060f0 | 159 | struct rdma_bind_list { |
aac978e1 | 160 | enum rdma_port_space ps; |
e51060f0 SH |
161 | struct hlist_head owners; |
162 | unsigned short port; | |
163 | }; | |
164 | ||
4be74b42 | 165 | static int cma_ps_alloc(struct net *net, enum rdma_port_space ps, |
aac978e1 HE |
166 | struct rdma_bind_list *bind_list, int snum) |
167 | { | |
4be74b42 | 168 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
169 | |
170 | return idr_alloc(idr, bind_list, snum, snum + 1, GFP_KERNEL); | |
171 | } | |
172 | ||
4be74b42 HE |
173 | static struct rdma_bind_list *cma_ps_find(struct net *net, |
174 | enum rdma_port_space ps, int snum) | |
aac978e1 | 175 | { |
4be74b42 | 176 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
177 | |
178 | return idr_find(idr, snum); | |
179 | } | |
180 | ||
4be74b42 | 181 | static void cma_ps_remove(struct net *net, enum rdma_port_space ps, int snum) |
aac978e1 | 182 | { |
4be74b42 | 183 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
184 | |
185 | idr_remove(idr, snum); | |
186 | } | |
187 | ||
68602120 SH |
188 | enum { |
189 | CMA_OPTION_AFONLY, | |
190 | }; | |
191 | ||
218a773f MB |
192 | void cma_ref_dev(struct cma_device *cma_dev) |
193 | { | |
194 | atomic_inc(&cma_dev->refcount); | |
195 | } | |
196 | ||
045959db MB |
197 | struct cma_device *cma_enum_devices_by_ibdev(cma_device_filter filter, |
198 | void *cookie) | |
199 | { | |
200 | struct cma_device *cma_dev; | |
201 | struct cma_device *found_cma_dev = NULL; | |
202 | ||
203 | mutex_lock(&lock); | |
204 | ||
205 | list_for_each_entry(cma_dev, &dev_list, list) | |
206 | if (filter(cma_dev->device, cookie)) { | |
207 | found_cma_dev = cma_dev; | |
208 | break; | |
209 | } | |
210 | ||
211 | if (found_cma_dev) | |
212 | cma_ref_dev(found_cma_dev); | |
213 | mutex_unlock(&lock); | |
214 | return found_cma_dev; | |
215 | } | |
216 | ||
217 | int cma_get_default_gid_type(struct cma_device *cma_dev, | |
218 | unsigned int port) | |
219 | { | |
220 | if (port < rdma_start_port(cma_dev->device) || | |
221 | port > rdma_end_port(cma_dev->device)) | |
222 | return -EINVAL; | |
223 | ||
224 | return cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)]; | |
225 | } | |
226 | ||
227 | int cma_set_default_gid_type(struct cma_device *cma_dev, | |
228 | unsigned int port, | |
229 | enum ib_gid_type default_gid_type) | |
230 | { | |
231 | unsigned long supported_gids; | |
232 | ||
233 | if (port < rdma_start_port(cma_dev->device) || | |
234 | port > rdma_end_port(cma_dev->device)) | |
235 | return -EINVAL; | |
236 | ||
237 | supported_gids = roce_gid_type_mask_support(cma_dev->device, port); | |
238 | ||
239 | if (!(supported_gids & 1 << default_gid_type)) | |
240 | return -EINVAL; | |
241 | ||
242 | cma_dev->default_gid_type[port - rdma_start_port(cma_dev->device)] = | |
243 | default_gid_type; | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | struct ib_device *cma_get_ib_dev(struct cma_device *cma_dev) | |
249 | { | |
250 | return cma_dev->device; | |
251 | } | |
252 | ||
e51060f0 SH |
253 | /* |
254 | * Device removal can occur at anytime, so we need extra handling to | |
255 | * serialize notifying the user of device removal with other callbacks. | |
256 | * We do this by disabling removal notification while a callback is in process, | |
257 | * and reporting it after the callback completes. | |
258 | */ | |
259 | struct rdma_id_private { | |
260 | struct rdma_cm_id id; | |
261 | ||
262 | struct rdma_bind_list *bind_list; | |
263 | struct hlist_node node; | |
d02d1f53 SH |
264 | struct list_head list; /* listen_any_list or cma_device.list */ |
265 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 266 | struct cma_device *cma_dev; |
c8f6a362 | 267 | struct list_head mc_list; |
e51060f0 | 268 | |
d02d1f53 | 269 | int internal_id; |
550e5ca7 | 270 | enum rdma_cm_state state; |
e51060f0 | 271 | spinlock_t lock; |
c5483388 SH |
272 | struct mutex qp_mutex; |
273 | ||
e51060f0 SH |
274 | struct completion comp; |
275 | atomic_t refcount; | |
de910bd9 | 276 | struct mutex handler_mutex; |
e51060f0 SH |
277 | |
278 | int backlog; | |
279 | int timeout_ms; | |
280 | struct ib_sa_query *query; | |
281 | int query_id; | |
282 | union { | |
283 | struct ib_cm_id *ib; | |
07ebafba | 284 | struct iw_cm_id *iw; |
e51060f0 SH |
285 | } cm_id; |
286 | ||
287 | u32 seq_num; | |
c8f6a362 | 288 | u32 qkey; |
e51060f0 | 289 | u32 qp_num; |
83e9502d | 290 | pid_t owner; |
68602120 | 291 | u32 options; |
e51060f0 | 292 | u8 srq; |
a81c994d | 293 | u8 tos; |
a9bb7912 | 294 | u8 reuseaddr; |
5b0ec991 | 295 | u8 afonly; |
cb57bb84 | 296 | enum ib_gid_type gid_type; |
e51060f0 SH |
297 | }; |
298 | ||
c8f6a362 SH |
299 | struct cma_multicast { |
300 | struct rdma_id_private *id_priv; | |
301 | union { | |
302 | struct ib_sa_multicast *ib; | |
303 | } multicast; | |
304 | struct list_head list; | |
305 | void *context; | |
3f446754 | 306 | struct sockaddr_storage addr; |
3c86aa70 | 307 | struct kref mcref; |
bee3c3c9 | 308 | bool igmp_joined; |
c8f6a362 SH |
309 | }; |
310 | ||
e51060f0 SH |
311 | struct cma_work { |
312 | struct work_struct work; | |
313 | struct rdma_id_private *id; | |
550e5ca7 NM |
314 | enum rdma_cm_state old_state; |
315 | enum rdma_cm_state new_state; | |
e51060f0 SH |
316 | struct rdma_cm_event event; |
317 | }; | |
318 | ||
dd5bdff8 OG |
319 | struct cma_ndev_work { |
320 | struct work_struct work; | |
321 | struct rdma_id_private *id; | |
322 | struct rdma_cm_event event; | |
323 | }; | |
324 | ||
3c86aa70 EC |
325 | struct iboe_mcast_work { |
326 | struct work_struct work; | |
327 | struct rdma_id_private *id; | |
328 | struct cma_multicast *mc; | |
329 | }; | |
330 | ||
e51060f0 SH |
331 | union cma_ip_addr { |
332 | struct in6_addr ip6; | |
333 | struct { | |
1b90c137 AV |
334 | __be32 pad[3]; |
335 | __be32 addr; | |
e51060f0 SH |
336 | } ip4; |
337 | }; | |
338 | ||
339 | struct cma_hdr { | |
340 | u8 cma_version; | |
341 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 342 | __be16 port; |
e51060f0 SH |
343 | union cma_ip_addr src_addr; |
344 | union cma_ip_addr dst_addr; | |
345 | }; | |
346 | ||
e51060f0 | 347 | #define CMA_VERSION 0x00 |
e51060f0 | 348 | |
4c21b5bc HE |
349 | struct cma_req_info { |
350 | struct ib_device *device; | |
351 | int port; | |
352 | union ib_gid local_gid; | |
353 | __be64 service_id; | |
354 | u16 pkey; | |
355 | bool has_gid:1; | |
356 | }; | |
357 | ||
550e5ca7 | 358 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
359 | { |
360 | unsigned long flags; | |
361 | int ret; | |
362 | ||
363 | spin_lock_irqsave(&id_priv->lock, flags); | |
364 | ret = (id_priv->state == comp); | |
365 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
366 | return ret; | |
367 | } | |
368 | ||
369 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 370 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
371 | { |
372 | unsigned long flags; | |
373 | int ret; | |
374 | ||
375 | spin_lock_irqsave(&id_priv->lock, flags); | |
376 | if ((ret = (id_priv->state == comp))) | |
377 | id_priv->state = exch; | |
378 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
379 | return ret; | |
380 | } | |
381 | ||
550e5ca7 NM |
382 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
383 | enum rdma_cm_state exch) | |
e51060f0 SH |
384 | { |
385 | unsigned long flags; | |
550e5ca7 | 386 | enum rdma_cm_state old; |
e51060f0 SH |
387 | |
388 | spin_lock_irqsave(&id_priv->lock, flags); | |
389 | old = id_priv->state; | |
390 | id_priv->state = exch; | |
391 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
392 | return old; | |
393 | } | |
394 | ||
4c21b5bc | 395 | static inline u8 cma_get_ip_ver(const struct cma_hdr *hdr) |
e51060f0 SH |
396 | { |
397 | return hdr->ip_version >> 4; | |
398 | } | |
399 | ||
400 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
401 | { | |
402 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
403 | } | |
404 | ||
bee3c3c9 MS |
405 | static int cma_igmp_send(struct net_device *ndev, union ib_gid *mgid, bool join) |
406 | { | |
407 | struct in_device *in_dev = NULL; | |
408 | ||
409 | if (ndev) { | |
410 | rtnl_lock(); | |
411 | in_dev = __in_dev_get_rtnl(ndev); | |
412 | if (in_dev) { | |
413 | if (join) | |
414 | ip_mc_inc_group(in_dev, | |
415 | *(__be32 *)(mgid->raw + 12)); | |
416 | else | |
417 | ip_mc_dec_group(in_dev, | |
418 | *(__be32 *)(mgid->raw + 12)); | |
419 | } | |
420 | rtnl_unlock(); | |
421 | } | |
422 | return (in_dev) ? 0 : -ENODEV; | |
423 | } | |
424 | ||
045959db MB |
425 | static void _cma_attach_to_dev(struct rdma_id_private *id_priv, |
426 | struct cma_device *cma_dev) | |
e51060f0 | 427 | { |
218a773f | 428 | cma_ref_dev(cma_dev); |
e51060f0 | 429 | id_priv->cma_dev = cma_dev; |
045959db | 430 | id_priv->gid_type = 0; |
e51060f0 | 431 | id_priv->id.device = cma_dev->device; |
3c86aa70 EC |
432 | id_priv->id.route.addr.dev_addr.transport = |
433 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 SH |
434 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
435 | } | |
436 | ||
045959db MB |
437 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
438 | struct cma_device *cma_dev) | |
439 | { | |
440 | _cma_attach_to_dev(id_priv, cma_dev); | |
441 | id_priv->gid_type = | |
442 | cma_dev->default_gid_type[id_priv->id.port_num - | |
443 | rdma_start_port(cma_dev->device)]; | |
444 | } | |
445 | ||
218a773f | 446 | void cma_deref_dev(struct cma_device *cma_dev) |
e51060f0 SH |
447 | { |
448 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
449 | complete(&cma_dev->comp); | |
450 | } | |
451 | ||
3c86aa70 EC |
452 | static inline void release_mc(struct kref *kref) |
453 | { | |
454 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
455 | ||
456 | kfree(mc->multicast.ib); | |
457 | kfree(mc); | |
458 | } | |
459 | ||
a396d43a | 460 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 461 | { |
a396d43a | 462 | mutex_lock(&lock); |
e51060f0 SH |
463 | list_del(&id_priv->list); |
464 | cma_deref_dev(id_priv->cma_dev); | |
465 | id_priv->cma_dev = NULL; | |
a396d43a | 466 | mutex_unlock(&lock); |
e51060f0 SH |
467 | } |
468 | ||
f4753834 SH |
469 | static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv) |
470 | { | |
471 | return (struct sockaddr *) &id_priv->id.route.addr.src_addr; | |
472 | } | |
473 | ||
474 | static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv) | |
475 | { | |
476 | return (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
477 | } | |
478 | ||
479 | static inline unsigned short cma_family(struct rdma_id_private *id_priv) | |
480 | { | |
481 | return id_priv->id.route.addr.src_addr.ss_family; | |
482 | } | |
483 | ||
5c438135 | 484 | static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey) |
c8f6a362 SH |
485 | { |
486 | struct ib_sa_mcmember_rec rec; | |
487 | int ret = 0; | |
488 | ||
5c438135 SH |
489 | if (id_priv->qkey) { |
490 | if (qkey && id_priv->qkey != qkey) | |
491 | return -EINVAL; | |
d2ca39f2 | 492 | return 0; |
5c438135 SH |
493 | } |
494 | ||
495 | if (qkey) { | |
496 | id_priv->qkey = qkey; | |
497 | return 0; | |
498 | } | |
d2ca39f2 YE |
499 | |
500 | switch (id_priv->id.ps) { | |
c8f6a362 | 501 | case RDMA_PS_UDP: |
5c438135 | 502 | case RDMA_PS_IB: |
d2ca39f2 | 503 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
504 | break; |
505 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
506 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
507 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
508 | id_priv->id.port_num, &rec.mgid, | |
509 | &rec); | |
510 | if (!ret) | |
511 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
512 | break; |
513 | default: | |
514 | break; | |
515 | } | |
516 | return ret; | |
517 | } | |
518 | ||
680f920a SH |
519 | static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr) |
520 | { | |
521 | dev_addr->dev_type = ARPHRD_INFINIBAND; | |
522 | rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr); | |
523 | ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey)); | |
524 | } | |
525 | ||
526 | static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) | |
527 | { | |
528 | int ret; | |
529 | ||
530 | if (addr->sa_family != AF_IB) { | |
dd5f03be | 531 | ret = rdma_translate_ip(addr, dev_addr, NULL); |
680f920a SH |
532 | } else { |
533 | cma_translate_ib((struct sockaddr_ib *) addr, dev_addr); | |
534 | ret = 0; | |
535 | } | |
536 | ||
537 | return ret; | |
538 | } | |
539 | ||
7c11147d | 540 | static inline int cma_validate_port(struct ib_device *device, u8 port, |
045959db | 541 | enum ib_gid_type gid_type, |
abae1b71 MB |
542 | union ib_gid *gid, int dev_type, |
543 | int bound_if_index) | |
7c11147d | 544 | { |
7c11147d | 545 | int ret = -ENODEV; |
abae1b71 | 546 | struct net_device *ndev = NULL; |
7c11147d MW |
547 | |
548 | if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port)) | |
549 | return ret; | |
550 | ||
551 | if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port)) | |
552 | return ret; | |
553 | ||
64936773 | 554 | if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) { |
abae1b71 | 555 | ndev = dev_get_by_index(&init_net, bound_if_index); |
20029832 MB |
556 | if (ndev && ndev->flags & IFF_LOOPBACK) { |
557 | pr_info("detected loopback device\n"); | |
558 | dev_put(ndev); | |
559 | ||
560 | if (!device->get_netdev) | |
561 | return -EOPNOTSUPP; | |
562 | ||
563 | ndev = device->get_netdev(device, port); | |
564 | if (!ndev) | |
565 | return -ENODEV; | |
566 | } | |
045959db MB |
567 | } else { |
568 | gid_type = IB_GID_TYPE_IB; | |
20029832 | 569 | } |
abae1b71 | 570 | |
045959db | 571 | ret = ib_find_cached_gid_by_port(device, gid, gid_type, port, |
b39ffa1d | 572 | ndev, NULL); |
abae1b71 MB |
573 | |
574 | if (ndev) | |
575 | dev_put(ndev); | |
7c11147d MW |
576 | |
577 | return ret; | |
578 | } | |
579 | ||
be9130cc DL |
580 | static int cma_acquire_dev(struct rdma_id_private *id_priv, |
581 | struct rdma_id_private *listen_id_priv) | |
e51060f0 | 582 | { |
c8f6a362 | 583 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 584 | struct cma_device *cma_dev; |
7c11147d | 585 | union ib_gid gid, iboe_gid, *gidp; |
e51060f0 | 586 | int ret = -ENODEV; |
7c11147d | 587 | u8 port; |
e51060f0 | 588 | |
7c11147d | 589 | if (dev_addr->dev_type != ARPHRD_INFINIBAND && |
2efdd6a0 MS |
590 | id_priv->id.ps == RDMA_PS_IPOIB) |
591 | return -EINVAL; | |
592 | ||
a396d43a | 593 | mutex_lock(&lock); |
7b85627b MS |
594 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
595 | &iboe_gid); | |
596 | ||
3c86aa70 EC |
597 | memcpy(&gid, dev_addr->src_dev_addr + |
598 | rdma_addr_gid_offset(dev_addr), sizeof gid); | |
7c11147d MW |
599 | |
600 | if (listen_id_priv) { | |
be9130cc DL |
601 | cma_dev = listen_id_priv->cma_dev; |
602 | port = listen_id_priv->id.port_num; | |
5d9fb044 | 603 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
7c11147d | 604 | &iboe_gid : &gid; |
be9130cc | 605 | |
045959db MB |
606 | ret = cma_validate_port(cma_dev->device, port, |
607 | rdma_protocol_ib(cma_dev->device, port) ? | |
608 | IB_GID_TYPE_IB : | |
609 | listen_id_priv->gid_type, gidp, | |
abae1b71 MB |
610 | dev_addr->dev_type, |
611 | dev_addr->bound_dev_if); | |
7c11147d MW |
612 | if (!ret) { |
613 | id_priv->id.port_num = port; | |
be9130cc DL |
614 | goto out; |
615 | } | |
616 | } | |
7c11147d | 617 | |
e51060f0 | 618 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 | 619 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
be9130cc DL |
620 | if (listen_id_priv && |
621 | listen_id_priv->cma_dev == cma_dev && | |
622 | listen_id_priv->id.port_num == port) | |
623 | continue; | |
7c11147d | 624 | |
5d9fb044 | 625 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
7c11147d MW |
626 | &iboe_gid : &gid; |
627 | ||
045959db MB |
628 | ret = cma_validate_port(cma_dev->device, port, |
629 | rdma_protocol_ib(cma_dev->device, port) ? | |
630 | IB_GID_TYPE_IB : | |
631 | cma_dev->default_gid_type[port - 1], | |
632 | gidp, dev_addr->dev_type, | |
abae1b71 | 633 | dev_addr->bound_dev_if); |
7c11147d MW |
634 | if (!ret) { |
635 | id_priv->id.port_num = port; | |
636 | goto out; | |
3c86aa70 | 637 | } |
e51060f0 SH |
638 | } |
639 | } | |
3c86aa70 EC |
640 | |
641 | out: | |
642 | if (!ret) | |
643 | cma_attach_to_dev(id_priv, cma_dev); | |
644 | ||
a396d43a | 645 | mutex_unlock(&lock); |
e51060f0 SH |
646 | return ret; |
647 | } | |
648 | ||
f17df3b0 SH |
649 | /* |
650 | * Select the source IB device and address to reach the destination IB address. | |
651 | */ | |
652 | static int cma_resolve_ib_dev(struct rdma_id_private *id_priv) | |
653 | { | |
654 | struct cma_device *cma_dev, *cur_dev; | |
655 | struct sockaddr_ib *addr; | |
656 | union ib_gid gid, sgid, *dgid; | |
657 | u16 pkey, index; | |
8fb488d7 | 658 | u8 p; |
f17df3b0 SH |
659 | int i; |
660 | ||
661 | cma_dev = NULL; | |
662 | addr = (struct sockaddr_ib *) cma_dst_addr(id_priv); | |
663 | dgid = (union ib_gid *) &addr->sib_addr; | |
664 | pkey = ntohs(addr->sib_pkey); | |
665 | ||
666 | list_for_each_entry(cur_dev, &dev_list, list) { | |
f17df3b0 | 667 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { |
30a74ef4 | 668 | if (!rdma_cap_af_ib(cur_dev->device, p)) |
fef60902 MW |
669 | continue; |
670 | ||
f17df3b0 SH |
671 | if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index)) |
672 | continue; | |
673 | ||
55ee3ab2 MB |
674 | for (i = 0; !ib_get_cached_gid(cur_dev->device, p, i, |
675 | &gid, NULL); | |
676 | i++) { | |
f17df3b0 SH |
677 | if (!memcmp(&gid, dgid, sizeof(gid))) { |
678 | cma_dev = cur_dev; | |
679 | sgid = gid; | |
8fb488d7 | 680 | id_priv->id.port_num = p; |
f17df3b0 SH |
681 | goto found; |
682 | } | |
683 | ||
684 | if (!cma_dev && (gid.global.subnet_prefix == | |
685 | dgid->global.subnet_prefix)) { | |
686 | cma_dev = cur_dev; | |
687 | sgid = gid; | |
8fb488d7 | 688 | id_priv->id.port_num = p; |
f17df3b0 SH |
689 | } |
690 | } | |
691 | } | |
692 | } | |
693 | ||
694 | if (!cma_dev) | |
695 | return -ENODEV; | |
696 | ||
697 | found: | |
698 | cma_attach_to_dev(id_priv, cma_dev); | |
f17df3b0 SH |
699 | addr = (struct sockaddr_ib *) cma_src_addr(id_priv); |
700 | memcpy(&addr->sib_addr, &sgid, sizeof sgid); | |
701 | cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr); | |
702 | return 0; | |
703 | } | |
704 | ||
e51060f0 SH |
705 | static void cma_deref_id(struct rdma_id_private *id_priv) |
706 | { | |
707 | if (atomic_dec_and_test(&id_priv->refcount)) | |
708 | complete(&id_priv->comp); | |
709 | } | |
710 | ||
de910bd9 | 711 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
550e5ca7 | 712 | enum rdma_cm_state state) |
8aa08602 | 713 | { |
de910bd9 OG |
714 | mutex_lock(&id_priv->handler_mutex); |
715 | if (id_priv->state != state) { | |
716 | mutex_unlock(&id_priv->handler_mutex); | |
717 | return -EINVAL; | |
718 | } | |
719 | return 0; | |
e51060f0 SH |
720 | } |
721 | ||
fa20105e GS |
722 | struct rdma_cm_id *rdma_create_id(struct net *net, |
723 | rdma_cm_event_handler event_handler, | |
b26f9b99 SH |
724 | void *context, enum rdma_port_space ps, |
725 | enum ib_qp_type qp_type) | |
e51060f0 SH |
726 | { |
727 | struct rdma_id_private *id_priv; | |
728 | ||
729 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
730 | if (!id_priv) | |
731 | return ERR_PTR(-ENOMEM); | |
732 | ||
83e9502d | 733 | id_priv->owner = task_pid_nr(current); |
550e5ca7 | 734 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
735 | id_priv->id.context = context; |
736 | id_priv->id.event_handler = event_handler; | |
737 | id_priv->id.ps = ps; | |
b26f9b99 | 738 | id_priv->id.qp_type = qp_type; |
e51060f0 | 739 | spin_lock_init(&id_priv->lock); |
c5483388 | 740 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
741 | init_completion(&id_priv->comp); |
742 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 743 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 744 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 745 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 | 746 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
fa20105e | 747 | id_priv->id.route.addr.dev_addr.net = get_net(net); |
e51060f0 SH |
748 | |
749 | return &id_priv->id; | |
750 | } | |
751 | EXPORT_SYMBOL(rdma_create_id); | |
752 | ||
c8f6a362 | 753 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
754 | { |
755 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 756 | int qp_attr_mask, ret; |
e51060f0 | 757 | |
c8f6a362 SH |
758 | qp_attr.qp_state = IB_QPS_INIT; |
759 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
760 | if (ret) |
761 | return ret; | |
762 | ||
c8f6a362 SH |
763 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
764 | if (ret) | |
765 | return ret; | |
766 | ||
767 | qp_attr.qp_state = IB_QPS_RTR; | |
768 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
769 | if (ret) | |
770 | return ret; | |
771 | ||
772 | qp_attr.qp_state = IB_QPS_RTS; | |
773 | qp_attr.sq_psn = 0; | |
774 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
775 | ||
776 | return ret; | |
e51060f0 SH |
777 | } |
778 | ||
c8f6a362 | 779 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
780 | { |
781 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 782 | int qp_attr_mask, ret; |
07ebafba TT |
783 | |
784 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
785 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
786 | if (ret) | |
787 | return ret; | |
07ebafba | 788 | |
c8f6a362 | 789 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
790 | } |
791 | ||
e51060f0 SH |
792 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
793 | struct ib_qp_init_attr *qp_init_attr) | |
794 | { | |
795 | struct rdma_id_private *id_priv; | |
796 | struct ib_qp *qp; | |
797 | int ret; | |
798 | ||
799 | id_priv = container_of(id, struct rdma_id_private, id); | |
800 | if (id->device != pd->device) | |
801 | return -EINVAL; | |
802 | ||
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); |
4c21b5bc HE |
1209 | break; |
1210 | case IB_CM_SIDR_REQ_RECEIVED: | |
1211 | req->device = sidr_param->listen_id->device; | |
1212 | req->port = sidr_param->port; | |
1213 | req->has_gid = false; | |
1214 | req->service_id = sidr_param->service_id; | |
ab3964ad | 1215 | req->pkey = sidr_param->pkey; |
4c21b5bc HE |
1216 | break; |
1217 | default: | |
1218 | return -EINVAL; | |
1219 | } | |
1220 | ||
1221 | return 0; | |
1222 | } | |
1223 | ||
f887f2ac HE |
1224 | static bool validate_ipv4_net_dev(struct net_device *net_dev, |
1225 | const struct sockaddr_in *dst_addr, | |
1226 | const struct sockaddr_in *src_addr) | |
1227 | { | |
1228 | __be32 daddr = dst_addr->sin_addr.s_addr, | |
1229 | saddr = src_addr->sin_addr.s_addr; | |
1230 | struct fib_result res; | |
1231 | struct flowi4 fl4; | |
1232 | int err; | |
1233 | bool ret; | |
1234 | ||
1235 | if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) || | |
1236 | ipv4_is_lbcast(daddr) || ipv4_is_zeronet(saddr) || | |
1237 | ipv4_is_zeronet(daddr) || ipv4_is_loopback(daddr) || | |
1238 | ipv4_is_loopback(saddr)) | |
1239 | return false; | |
1240 | ||
1241 | memset(&fl4, 0, sizeof(fl4)); | |
1242 | fl4.flowi4_iif = net_dev->ifindex; | |
1243 | fl4.daddr = daddr; | |
1244 | fl4.saddr = saddr; | |
1245 | ||
1246 | rcu_read_lock(); | |
1247 | err = fib_lookup(dev_net(net_dev), &fl4, &res, 0); | |
d3632493 | 1248 | ret = err == 0 && FIB_RES_DEV(res) == net_dev; |
f887f2ac HE |
1249 | rcu_read_unlock(); |
1250 | ||
1251 | return ret; | |
1252 | } | |
1253 | ||
1254 | static bool validate_ipv6_net_dev(struct net_device *net_dev, | |
1255 | const struct sockaddr_in6 *dst_addr, | |
1256 | const struct sockaddr_in6 *src_addr) | |
1257 | { | |
1258 | #if IS_ENABLED(CONFIG_IPV6) | |
1259 | const int strict = ipv6_addr_type(&dst_addr->sin6_addr) & | |
1260 | IPV6_ADDR_LINKLOCAL; | |
1261 | struct rt6_info *rt = rt6_lookup(dev_net(net_dev), &dst_addr->sin6_addr, | |
1262 | &src_addr->sin6_addr, net_dev->ifindex, | |
1263 | strict); | |
1264 | bool ret; | |
1265 | ||
1266 | if (!rt) | |
1267 | return false; | |
1268 | ||
1269 | ret = rt->rt6i_idev->dev == net_dev; | |
1270 | ip6_rt_put(rt); | |
1271 | ||
1272 | return ret; | |
1273 | #else | |
1274 | return false; | |
1275 | #endif | |
1276 | } | |
1277 | ||
1278 | static bool validate_net_dev(struct net_device *net_dev, | |
1279 | const struct sockaddr *daddr, | |
1280 | const struct sockaddr *saddr) | |
1281 | { | |
1282 | const struct sockaddr_in *daddr4 = (const struct sockaddr_in *)daddr; | |
1283 | const struct sockaddr_in *saddr4 = (const struct sockaddr_in *)saddr; | |
1284 | const struct sockaddr_in6 *daddr6 = (const struct sockaddr_in6 *)daddr; | |
1285 | const struct sockaddr_in6 *saddr6 = (const struct sockaddr_in6 *)saddr; | |
1286 | ||
1287 | switch (daddr->sa_family) { | |
1288 | case AF_INET: | |
1289 | return saddr->sa_family == AF_INET && | |
1290 | validate_ipv4_net_dev(net_dev, daddr4, saddr4); | |
1291 | ||
1292 | case AF_INET6: | |
1293 | return saddr->sa_family == AF_INET6 && | |
1294 | validate_ipv6_net_dev(net_dev, daddr6, saddr6); | |
1295 | ||
1296 | default: | |
1297 | return false; | |
1298 | } | |
1299 | } | |
1300 | ||
4c21b5bc HE |
1301 | static struct net_device *cma_get_net_dev(struct ib_cm_event *ib_event, |
1302 | const struct cma_req_info *req) | |
1303 | { | |
f887f2ac HE |
1304 | struct sockaddr_storage listen_addr_storage, src_addr_storage; |
1305 | struct sockaddr *listen_addr = (struct sockaddr *)&listen_addr_storage, | |
1306 | *src_addr = (struct sockaddr *)&src_addr_storage; | |
4c21b5bc HE |
1307 | struct net_device *net_dev; |
1308 | const union ib_gid *gid = req->has_gid ? &req->local_gid : NULL; | |
1309 | int err; | |
1310 | ||
f887f2ac HE |
1311 | err = cma_save_ip_info(listen_addr, src_addr, ib_event, |
1312 | req->service_id); | |
4c21b5bc HE |
1313 | if (err) |
1314 | return ERR_PTR(err); | |
1315 | ||
1316 | net_dev = ib_get_net_dev_by_params(req->device, req->port, req->pkey, | |
1317 | gid, listen_addr); | |
1318 | if (!net_dev) | |
1319 | return ERR_PTR(-ENODEV); | |
1320 | ||
f887f2ac HE |
1321 | if (!validate_net_dev(net_dev, listen_addr, src_addr)) { |
1322 | dev_put(net_dev); | |
1323 | return ERR_PTR(-EHOSTUNREACH); | |
1324 | } | |
1325 | ||
4c21b5bc HE |
1326 | return net_dev; |
1327 | } | |
1328 | ||
1329 | static enum rdma_port_space rdma_ps_from_service_id(__be64 service_id) | |
1330 | { | |
1331 | return (be64_to_cpu(service_id) >> 16) & 0xffff; | |
1332 | } | |
1333 | ||
1334 | static bool cma_match_private_data(struct rdma_id_private *id_priv, | |
1335 | const struct cma_hdr *hdr) | |
1336 | { | |
1337 | struct sockaddr *addr = cma_src_addr(id_priv); | |
1338 | __be32 ip4_addr; | |
1339 | struct in6_addr ip6_addr; | |
1340 | ||
1341 | if (cma_any_addr(addr) && !id_priv->afonly) | |
1342 | return true; | |
1343 | ||
1344 | switch (addr->sa_family) { | |
1345 | case AF_INET: | |
1346 | ip4_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
1347 | if (cma_get_ip_ver(hdr) != 4) | |
1348 | return false; | |
1349 | if (!cma_any_addr(addr) && | |
1350 | hdr->dst_addr.ip4.addr != ip4_addr) | |
1351 | return false; | |
1352 | break; | |
1353 | case AF_INET6: | |
1354 | ip6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr; | |
1355 | if (cma_get_ip_ver(hdr) != 6) | |
1356 | return false; | |
1357 | if (!cma_any_addr(addr) && | |
1358 | memcmp(&hdr->dst_addr.ip6, &ip6_addr, sizeof(ip6_addr))) | |
1359 | return false; | |
1360 | break; | |
1361 | case AF_IB: | |
1362 | return true; | |
1363 | default: | |
1364 | return false; | |
1365 | } | |
1366 | ||
1367 | return true; | |
1368 | } | |
1369 | ||
b8cab5da HE |
1370 | static bool cma_protocol_roce_dev_port(struct ib_device *device, int port_num) |
1371 | { | |
1372 | enum rdma_link_layer ll = rdma_port_get_link_layer(device, port_num); | |
1373 | enum rdma_transport_type transport = | |
1374 | rdma_node_get_transport(device->node_type); | |
1375 | ||
1376 | return ll == IB_LINK_LAYER_ETHERNET && transport == RDMA_TRANSPORT_IB; | |
1377 | } | |
1378 | ||
1379 | static bool cma_protocol_roce(const struct rdma_cm_id *id) | |
1380 | { | |
1381 | struct ib_device *device = id->device; | |
1382 | const int port_num = id->port_num ?: rdma_start_port(device); | |
1383 | ||
1384 | return cma_protocol_roce_dev_port(device, port_num); | |
1385 | } | |
1386 | ||
4c21b5bc HE |
1387 | static bool cma_match_net_dev(const struct rdma_id_private *id_priv, |
1388 | const struct net_device *net_dev) | |
1389 | { | |
1390 | const struct rdma_addr *addr = &id_priv->id.route.addr; | |
1391 | ||
1392 | if (!net_dev) | |
b8cab5da HE |
1393 | /* This request is an AF_IB request or a RoCE request */ |
1394 | return addr->src_addr.ss_family == AF_IB || | |
1395 | cma_protocol_roce(&id_priv->id); | |
4c21b5bc HE |
1396 | |
1397 | return !addr->dev_addr.bound_dev_if || | |
fa20105e | 1398 | (net_eq(dev_net(net_dev), addr->dev_addr.net) && |
4c21b5bc HE |
1399 | addr->dev_addr.bound_dev_if == net_dev->ifindex); |
1400 | } | |
1401 | ||
1402 | static struct rdma_id_private *cma_find_listener( | |
1403 | const struct rdma_bind_list *bind_list, | |
1404 | const struct ib_cm_id *cm_id, | |
1405 | const struct ib_cm_event *ib_event, | |
1406 | const struct cma_req_info *req, | |
1407 | const struct net_device *net_dev) | |
1408 | { | |
1409 | struct rdma_id_private *id_priv, *id_priv_dev; | |
1410 | ||
1411 | if (!bind_list) | |
1412 | return ERR_PTR(-EINVAL); | |
1413 | ||
1414 | hlist_for_each_entry(id_priv, &bind_list->owners, node) { | |
1415 | if (cma_match_private_data(id_priv, ib_event->private_data)) { | |
1416 | if (id_priv->id.device == cm_id->device && | |
1417 | cma_match_net_dev(id_priv, net_dev)) | |
1418 | return id_priv; | |
1419 | list_for_each_entry(id_priv_dev, | |
1420 | &id_priv->listen_list, | |
1421 | listen_list) { | |
1422 | if (id_priv_dev->id.device == cm_id->device && | |
1423 | cma_match_net_dev(id_priv_dev, net_dev)) | |
1424 | return id_priv_dev; | |
1425 | } | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | return ERR_PTR(-EINVAL); | |
1430 | } | |
1431 | ||
1432 | static struct rdma_id_private *cma_id_from_event(struct ib_cm_id *cm_id, | |
0b3ca768 HE |
1433 | struct ib_cm_event *ib_event, |
1434 | struct net_device **net_dev) | |
4c21b5bc HE |
1435 | { |
1436 | struct cma_req_info req; | |
1437 | struct rdma_bind_list *bind_list; | |
1438 | struct rdma_id_private *id_priv; | |
4c21b5bc HE |
1439 | int err; |
1440 | ||
1441 | err = cma_save_req_info(ib_event, &req); | |
1442 | if (err) | |
1443 | return ERR_PTR(err); | |
1444 | ||
0b3ca768 HE |
1445 | *net_dev = cma_get_net_dev(ib_event, &req); |
1446 | if (IS_ERR(*net_dev)) { | |
1447 | if (PTR_ERR(*net_dev) == -EAFNOSUPPORT) { | |
4c21b5bc | 1448 | /* Assuming the protocol is AF_IB */ |
0b3ca768 | 1449 | *net_dev = NULL; |
b8cab5da HE |
1450 | } else if (cma_protocol_roce_dev_port(req.device, req.port)) { |
1451 | /* TODO find the net dev matching the request parameters | |
1452 | * through the RoCE GID table */ | |
1453 | *net_dev = NULL; | |
4c21b5bc | 1454 | } else { |
0b3ca768 | 1455 | return ERR_CAST(*net_dev); |
4c21b5bc HE |
1456 | } |
1457 | } | |
1458 | ||
fa20105e | 1459 | bind_list = cma_ps_find(*net_dev ? dev_net(*net_dev) : &init_net, |
4be74b42 | 1460 | rdma_ps_from_service_id(req.service_id), |
4c21b5bc | 1461 | cma_port_from_service_id(req.service_id)); |
0b3ca768 | 1462 | id_priv = cma_find_listener(bind_list, cm_id, ib_event, &req, *net_dev); |
b3b51f9f | 1463 | if (IS_ERR(id_priv) && *net_dev) { |
be688195 HE |
1464 | dev_put(*net_dev); |
1465 | *net_dev = NULL; | |
1466 | } | |
4c21b5bc HE |
1467 | |
1468 | return id_priv; | |
1469 | } | |
1470 | ||
e8160e15 | 1471 | static inline int cma_user_data_offset(struct rdma_id_private *id_priv) |
e51060f0 | 1472 | { |
e8160e15 | 1473 | return cma_family(id_priv) == AF_IB ? 0 : sizeof(struct cma_hdr); |
e51060f0 SH |
1474 | } |
1475 | ||
e51060f0 SH |
1476 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
1477 | { | |
fe53ba2f | 1478 | if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) { |
e51060f0 SH |
1479 | if (id_priv->query) |
1480 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
e51060f0 SH |
1481 | } |
1482 | } | |
1483 | ||
e51060f0 SH |
1484 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
1485 | { | |
1486 | struct rdma_id_private *dev_id_priv; | |
1487 | ||
d02d1f53 SH |
1488 | /* |
1489 | * Remove from listen_any_list to prevent added devices from spawning | |
1490 | * additional listen requests. | |
1491 | */ | |
e51060f0 SH |
1492 | mutex_lock(&lock); |
1493 | list_del(&id_priv->list); | |
1494 | ||
1495 | while (!list_empty(&id_priv->listen_list)) { | |
1496 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
1497 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
1498 | /* sync with device removal to avoid duplicate destruction */ |
1499 | list_del_init(&dev_id_priv->list); | |
1500 | list_del(&dev_id_priv->listen_list); | |
1501 | mutex_unlock(&lock); | |
1502 | ||
1503 | rdma_destroy_id(&dev_id_priv->id); | |
1504 | mutex_lock(&lock); | |
e51060f0 SH |
1505 | } |
1506 | mutex_unlock(&lock); | |
1507 | } | |
1508 | ||
1509 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 1510 | enum rdma_cm_state state) |
e51060f0 SH |
1511 | { |
1512 | switch (state) { | |
550e5ca7 | 1513 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
1514 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
1515 | break; | |
550e5ca7 | 1516 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
1517 | cma_cancel_route(id_priv); |
1518 | break; | |
550e5ca7 | 1519 | case RDMA_CM_LISTEN: |
f4753834 | 1520 | if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) |
e51060f0 SH |
1521 | cma_cancel_listens(id_priv); |
1522 | break; | |
1523 | default: | |
1524 | break; | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | static void cma_release_port(struct rdma_id_private *id_priv) | |
1529 | { | |
1530 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
fa20105e | 1531 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
1532 | |
1533 | if (!bind_list) | |
1534 | return; | |
1535 | ||
1536 | mutex_lock(&lock); | |
1537 | hlist_del(&id_priv->node); | |
1538 | if (hlist_empty(&bind_list->owners)) { | |
fa20105e | 1539 | cma_ps_remove(net, bind_list->ps, bind_list->port); |
e51060f0 SH |
1540 | kfree(bind_list); |
1541 | } | |
1542 | mutex_unlock(&lock); | |
1543 | } | |
1544 | ||
c8f6a362 SH |
1545 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
1546 | { | |
1547 | struct cma_multicast *mc; | |
1548 | ||
1549 | while (!list_empty(&id_priv->mc_list)) { | |
1550 | mc = container_of(id_priv->mc_list.next, | |
1551 | struct cma_multicast, list); | |
1552 | list_del(&mc->list); | |
a31ad3b0 | 1553 | if (rdma_cap_ib_mcast(id_priv->cma_dev->device, |
5c9a5282 | 1554 | id_priv->id.port_num)) { |
3c86aa70 EC |
1555 | ib_sa_free_multicast(mc->multicast.ib); |
1556 | kfree(mc); | |
bee3c3c9 MS |
1557 | } else { |
1558 | if (mc->igmp_joined) { | |
1559 | struct rdma_dev_addr *dev_addr = | |
1560 | &id_priv->id.route.addr.dev_addr; | |
1561 | struct net_device *ndev = NULL; | |
1562 | ||
1563 | if (dev_addr->bound_dev_if) | |
1564 | ndev = dev_get_by_index(&init_net, | |
1565 | dev_addr->bound_dev_if); | |
1566 | if (ndev) { | |
1567 | cma_igmp_send(ndev, | |
1568 | &mc->multicast.ib->rec.mgid, | |
1569 | false); | |
1570 | dev_put(ndev); | |
1571 | } | |
1572 | } | |
3c86aa70 | 1573 | kref_put(&mc->mcref, release_mc); |
bee3c3c9 | 1574 | } |
c8f6a362 SH |
1575 | } |
1576 | } | |
1577 | ||
e51060f0 SH |
1578 | void rdma_destroy_id(struct rdma_cm_id *id) |
1579 | { | |
1580 | struct rdma_id_private *id_priv; | |
550e5ca7 | 1581 | enum rdma_cm_state state; |
e51060f0 SH |
1582 | |
1583 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1584 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1585 | cma_cancel_operation(id_priv, state); |
1586 | ||
a396d43a SH |
1587 | /* |
1588 | * Wait for any active callback to finish. New callbacks will find | |
1589 | * the id_priv state set to destroying and abort. | |
1590 | */ | |
1591 | mutex_lock(&id_priv->handler_mutex); | |
1592 | mutex_unlock(&id_priv->handler_mutex); | |
1593 | ||
e51060f0 | 1594 | if (id_priv->cma_dev) { |
72219cea | 1595 | if (rdma_cap_ib_cm(id_priv->id.device, 1)) { |
0c9361fc | 1596 | if (id_priv->cm_id.ib) |
e51060f0 | 1597 | ib_destroy_cm_id(id_priv->cm_id.ib); |
04215330 | 1598 | } else if (rdma_cap_iw_cm(id_priv->id.device, 1)) { |
0c9361fc | 1599 | if (id_priv->cm_id.iw) |
07ebafba | 1600 | iw_destroy_cm_id(id_priv->cm_id.iw); |
e51060f0 | 1601 | } |
c8f6a362 | 1602 | cma_leave_mc_groups(id_priv); |
a396d43a | 1603 | cma_release_dev(id_priv); |
e51060f0 SH |
1604 | } |
1605 | ||
1606 | cma_release_port(id_priv); | |
1607 | cma_deref_id(id_priv); | |
1608 | wait_for_completion(&id_priv->comp); | |
1609 | ||
d02d1f53 SH |
1610 | if (id_priv->internal_id) |
1611 | cma_deref_id(id_priv->id.context); | |
1612 | ||
e51060f0 | 1613 | kfree(id_priv->id.route.path_rec); |
fa20105e | 1614 | put_net(id_priv->id.route.addr.dev_addr.net); |
e51060f0 SH |
1615 | kfree(id_priv); |
1616 | } | |
1617 | EXPORT_SYMBOL(rdma_destroy_id); | |
1618 | ||
1619 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
1620 | { | |
1621 | int ret; | |
1622 | ||
5851bb89 | 1623 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
1624 | if (ret) |
1625 | goto reject; | |
1626 | ||
5851bb89 | 1627 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
1628 | if (ret) |
1629 | goto reject; | |
1630 | ||
1631 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
1632 | if (ret) | |
1633 | goto reject; | |
1634 | ||
1635 | return 0; | |
1636 | reject: | |
c5483388 | 1637 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
1638 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
1639 | NULL, 0, NULL, 0); | |
1640 | return ret; | |
1641 | } | |
1642 | ||
a1b1b61f SH |
1643 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
1644 | struct ib_cm_rep_event_param *rep_data, | |
1645 | void *private_data) | |
1646 | { | |
1647 | event->param.conn.private_data = private_data; | |
1648 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
1649 | event->param.conn.responder_resources = rep_data->responder_resources; | |
1650 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
1651 | event->param.conn.flow_control = rep_data->flow_control; | |
1652 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
1653 | event->param.conn.srq = rep_data->srq; | |
1654 | event->param.conn.qp_num = rep_data->remote_qpn; | |
1655 | } | |
1656 | ||
e51060f0 SH |
1657 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1658 | { | |
1659 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
1660 | struct rdma_cm_event event; |
1661 | int ret = 0; | |
e51060f0 | 1662 | |
38ca83a5 | 1663 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1664 | cma_disable_callback(id_priv, RDMA_CM_CONNECT)) || |
38ca83a5 | 1665 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1666 | cma_disable_callback(id_priv, RDMA_CM_DISCONNECT))) |
8aa08602 | 1667 | return 0; |
e51060f0 | 1668 | |
a1b1b61f | 1669 | memset(&event, 0, sizeof event); |
e51060f0 SH |
1670 | switch (ib_event->event) { |
1671 | case IB_CM_REQ_ERROR: | |
1672 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1673 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1674 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1675 | break; |
1676 | case IB_CM_REP_RECEIVED: | |
01602f11 | 1677 | if (id_priv->id.qp) { |
a1b1b61f SH |
1678 | event.status = cma_rep_recv(id_priv); |
1679 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1680 | RDMA_CM_EVENT_ESTABLISHED; | |
01602f11 | 1681 | } else { |
a1b1b61f | 1682 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
01602f11 | 1683 | } |
a1b1b61f SH |
1684 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, |
1685 | ib_event->private_data); | |
e51060f0 SH |
1686 | break; |
1687 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1688 | case IB_CM_USER_ESTABLISHED: |
1689 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1690 | break; |
1691 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1692 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1693 | case IB_CM_DREQ_RECEIVED: |
1694 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1695 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1696 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1697 | goto out; |
a1b1b61f | 1698 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1699 | break; |
1700 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1701 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1702 | break; | |
e51060f0 SH |
1703 | case IB_CM_MRA_RECEIVED: |
1704 | /* ignore event */ | |
1705 | goto out; | |
1706 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 1707 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1708 | event.status = ib_event->param.rej_rcvd.reason; |
1709 | event.event = RDMA_CM_EVENT_REJECTED; | |
1710 | event.param.conn.private_data = ib_event->private_data; | |
1711 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1712 | break; |
1713 | default: | |
468f2239 | 1714 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1715 | ib_event->event); |
1716 | goto out; | |
1717 | } | |
1718 | ||
a1b1b61f | 1719 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1720 | if (ret) { |
1721 | /* Destroy the CM ID by returning a non-zero value. */ | |
1722 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1723 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1724 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1725 | rdma_destroy_id(&id_priv->id); |
1726 | return ret; | |
1727 | } | |
1728 | out: | |
de910bd9 | 1729 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1730 | return ret; |
1731 | } | |
1732 | ||
628e5f6d | 1733 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
0b3ca768 HE |
1734 | struct ib_cm_event *ib_event, |
1735 | struct net_device *net_dev) | |
e51060f0 SH |
1736 | { |
1737 | struct rdma_id_private *id_priv; | |
1738 | struct rdma_cm_id *id; | |
1739 | struct rdma_route *rt; | |
0c505f70 HE |
1740 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
1741 | const __be64 service_id = | |
1742 | ib_event->param.req_rcvd.primary_path->service_id; | |
64c5e613 | 1743 | int ret; |
e51060f0 | 1744 | |
fa20105e GS |
1745 | id = rdma_create_id(listen_id->route.addr.dev_addr.net, |
1746 | listen_id->event_handler, listen_id->context, | |
b26f9b99 | 1747 | listen_id->ps, ib_event->param.req_rcvd.qp_type); |
e51060f0 | 1748 | if (IS_ERR(id)) |
0c9361fc | 1749 | return NULL; |
3f168d2b | 1750 | |
f4753834 | 1751 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
1752 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
1753 | (struct sockaddr *)&id->route.addr.dst_addr, | |
1754 | listen_id, ib_event, ss_family, service_id)) | |
fbaa1a6d | 1755 | goto err; |
e51060f0 SH |
1756 | |
1757 | rt = &id->route; | |
1758 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1759 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1760 | GFP_KERNEL); | |
e51060f0 | 1761 | if (!rt->path_rec) |
0c9361fc | 1762 | goto err; |
e51060f0 | 1763 | |
e51060f0 SH |
1764 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1765 | if (rt->num_paths == 2) | |
1766 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1767 | ||
0b3ca768 HE |
1768 | if (net_dev) { |
1769 | ret = rdma_copy_addr(&rt->addr.dev_addr, net_dev, NULL); | |
6f8372b6 | 1770 | if (ret) |
0c9361fc | 1771 | goto err; |
0b3ca768 | 1772 | } else { |
b8cab5da HE |
1773 | if (!cma_protocol_roce(listen_id) && |
1774 | cma_any_addr(cma_src_addr(id_priv))) { | |
1775 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; | |
1776 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
1777 | ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); | |
1778 | } else if (!cma_any_addr(cma_src_addr(id_priv))) { | |
1779 | ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr); | |
1780 | if (ret) | |
1781 | goto err; | |
1782 | } | |
6f8372b6 SH |
1783 | } |
1784 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 | 1785 | |
550e5ca7 | 1786 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 1787 | return id_priv; |
3f168d2b | 1788 | |
3f168d2b | 1789 | err: |
0c9361fc | 1790 | rdma_destroy_id(id); |
e51060f0 SH |
1791 | return NULL; |
1792 | } | |
1793 | ||
628e5f6d | 1794 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
0b3ca768 HE |
1795 | struct ib_cm_event *ib_event, |
1796 | struct net_device *net_dev) | |
628e5f6d SH |
1797 | { |
1798 | struct rdma_id_private *id_priv; | |
1799 | struct rdma_cm_id *id; | |
0c505f70 | 1800 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
fa20105e | 1801 | struct net *net = listen_id->route.addr.dev_addr.net; |
628e5f6d SH |
1802 | int ret; |
1803 | ||
fa20105e | 1804 | id = rdma_create_id(net, listen_id->event_handler, listen_id->context, |
b26f9b99 | 1805 | listen_id->ps, IB_QPT_UD); |
628e5f6d SH |
1806 | if (IS_ERR(id)) |
1807 | return NULL; | |
1808 | ||
f4753834 | 1809 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
1810 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
1811 | (struct sockaddr *)&id->route.addr.dst_addr, | |
1812 | listen_id, ib_event, ss_family, | |
1813 | ib_event->param.sidr_req_rcvd.service_id)) | |
628e5f6d SH |
1814 | goto err; |
1815 | ||
0b3ca768 HE |
1816 | if (net_dev) { |
1817 | ret = rdma_copy_addr(&id->route.addr.dev_addr, net_dev, NULL); | |
6f8372b6 SH |
1818 | if (ret) |
1819 | goto err; | |
0b3ca768 | 1820 | } else { |
b8cab5da HE |
1821 | if (!cma_any_addr(cma_src_addr(id_priv))) { |
1822 | ret = cma_translate_addr(cma_src_addr(id_priv), | |
1823 | &id->route.addr.dev_addr); | |
1824 | if (ret) | |
1825 | goto err; | |
1826 | } | |
6f8372b6 | 1827 | } |
628e5f6d | 1828 | |
550e5ca7 | 1829 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
1830 | return id_priv; |
1831 | err: | |
1832 | rdma_destroy_id(id); | |
1833 | return NULL; | |
1834 | } | |
1835 | ||
a1b1b61f SH |
1836 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1837 | struct ib_cm_req_event_param *req_data, | |
1838 | void *private_data, int offset) | |
1839 | { | |
1840 | event->param.conn.private_data = private_data + offset; | |
1841 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1842 | event->param.conn.responder_resources = req_data->responder_resources; | |
1843 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1844 | event->param.conn.flow_control = req_data->flow_control; | |
1845 | event->param.conn.retry_count = req_data->retry_count; | |
1846 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1847 | event->param.conn.srq = req_data->srq; | |
1848 | event->param.conn.qp_num = req_data->remote_qpn; | |
1849 | } | |
1850 | ||
9595480c HS |
1851 | static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) |
1852 | { | |
4dd81e89 | 1853 | return (((ib_event->event == IB_CM_REQ_RECEIVED) && |
9595480c HS |
1854 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || |
1855 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
1856 | (id->qp_type == IB_QPT_UD)) || | |
1857 | (!id->qp_type)); | |
1858 | } | |
1859 | ||
e51060f0 SH |
1860 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1861 | { | |
1862 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1863 | struct rdma_cm_event event; |
0b3ca768 | 1864 | struct net_device *net_dev; |
e51060f0 SH |
1865 | int offset, ret; |
1866 | ||
0b3ca768 | 1867 | listen_id = cma_id_from_event(cm_id, ib_event, &net_dev); |
4c21b5bc HE |
1868 | if (IS_ERR(listen_id)) |
1869 | return PTR_ERR(listen_id); | |
1870 | ||
0b3ca768 HE |
1871 | if (!cma_check_req_qp_type(&listen_id->id, ib_event)) { |
1872 | ret = -EINVAL; | |
1873 | goto net_dev_put; | |
1874 | } | |
9595480c | 1875 | |
0b3ca768 HE |
1876 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) { |
1877 | ret = -ECONNABORTED; | |
1878 | goto net_dev_put; | |
1879 | } | |
e51060f0 | 1880 | |
628e5f6d | 1881 | memset(&event, 0, sizeof event); |
e8160e15 | 1882 | offset = cma_user_data_offset(listen_id); |
628e5f6d | 1883 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; |
9595480c | 1884 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
0b3ca768 | 1885 | conn_id = cma_new_udp_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
1886 | event.param.ud.private_data = ib_event->private_data + offset; |
1887 | event.param.ud.private_data_len = | |
1888 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1889 | } else { | |
0b3ca768 | 1890 | conn_id = cma_new_conn_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
1891 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, |
1892 | ib_event->private_data, offset); | |
1893 | } | |
e51060f0 SH |
1894 | if (!conn_id) { |
1895 | ret = -ENOMEM; | |
b6cec8aa | 1896 | goto err1; |
e51060f0 SH |
1897 | } |
1898 | ||
de910bd9 | 1899 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
be9130cc | 1900 | ret = cma_acquire_dev(conn_id, listen_id); |
a1a733f6 | 1901 | if (ret) |
b6cec8aa | 1902 | goto err2; |
e51060f0 SH |
1903 | |
1904 | conn_id->cm_id.ib = cm_id; | |
1905 | cm_id->context = conn_id; | |
1906 | cm_id->cm_handler = cma_ib_handler; | |
1907 | ||
25ae21a1 SH |
1908 | /* |
1909 | * Protect against the user destroying conn_id from another thread | |
1910 | * until we're done accessing it. | |
1911 | */ | |
1912 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1913 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
b6cec8aa SH |
1914 | if (ret) |
1915 | goto err3; | |
b6cec8aa SH |
1916 | /* |
1917 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1918 | * while we're accessing the cm_id. | |
1919 | */ | |
1920 | mutex_lock(&lock); | |
dd5f03be MB |
1921 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && |
1922 | (conn_id->id.qp_type != IB_QPT_UD)) | |
b6cec8aa SH |
1923 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); |
1924 | mutex_unlock(&lock); | |
1925 | mutex_unlock(&conn_id->handler_mutex); | |
1926 | mutex_unlock(&listen_id->handler_mutex); | |
25ae21a1 | 1927 | cma_deref_id(conn_id); |
0b3ca768 HE |
1928 | if (net_dev) |
1929 | dev_put(net_dev); | |
b6cec8aa | 1930 | return 0; |
a1a733f6 | 1931 | |
b6cec8aa SH |
1932 | err3: |
1933 | cma_deref_id(conn_id); | |
a1a733f6 KK |
1934 | /* Destroy the CM ID by returning a non-zero value. */ |
1935 | conn_id->cm_id.ib = NULL; | |
b6cec8aa | 1936 | err2: |
550e5ca7 | 1937 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1938 | mutex_unlock(&conn_id->handler_mutex); |
b6cec8aa | 1939 | err1: |
de910bd9 | 1940 | mutex_unlock(&listen_id->handler_mutex); |
b6cec8aa SH |
1941 | if (conn_id) |
1942 | rdma_destroy_id(&conn_id->id); | |
0b3ca768 HE |
1943 | |
1944 | net_dev_put: | |
1945 | if (net_dev) | |
1946 | dev_put(net_dev); | |
1947 | ||
e51060f0 SH |
1948 | return ret; |
1949 | } | |
1950 | ||
cf53936f | 1951 | __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr) |
e51060f0 | 1952 | { |
496ce3ce SH |
1953 | if (addr->sa_family == AF_IB) |
1954 | return ((struct sockaddr_ib *) addr)->sib_sid; | |
1955 | ||
cf53936f | 1956 | return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 | 1957 | } |
cf53936f | 1958 | EXPORT_SYMBOL(rdma_get_service_id); |
e51060f0 | 1959 | |
07ebafba TT |
1960 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1961 | { | |
1962 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1963 | struct rdma_cm_event event; |
07ebafba | 1964 | int ret = 0; |
24d44a39 SW |
1965 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
1966 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba | 1967 | |
550e5ca7 | 1968 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
be65f086 | 1969 | return 0; |
07ebafba | 1970 | |
be65f086 | 1971 | memset(&event, 0, sizeof event); |
07ebafba TT |
1972 | switch (iw_event->event) { |
1973 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1974 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1975 | break; |
1976 | case IW_CM_EVENT_CONNECT_REPLY: | |
24d44a39 SW |
1977 | memcpy(cma_src_addr(id_priv), laddr, |
1978 | rdma_addr_size(laddr)); | |
1979 | memcpy(cma_dst_addr(id_priv), raddr, | |
1980 | rdma_addr_size(raddr)); | |
881a045f SW |
1981 | switch (iw_event->status) { |
1982 | case 0: | |
a1b1b61f | 1983 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1984 | event.param.conn.initiator_depth = iw_event->ird; |
1985 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
1986 | break; |
1987 | case -ECONNRESET: | |
1988 | case -ECONNREFUSED: | |
1989 | event.event = RDMA_CM_EVENT_REJECTED; | |
1990 | break; | |
1991 | case -ETIMEDOUT: | |
1992 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1993 | break; | |
1994 | default: | |
1995 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1996 | break; | |
1997 | } | |
07ebafba TT |
1998 | break; |
1999 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 2000 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
2001 | event.param.conn.initiator_depth = iw_event->ird; |
2002 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
2003 | break; |
2004 | default: | |
2005 | BUG_ON(1); | |
2006 | } | |
2007 | ||
a1b1b61f SH |
2008 | event.status = iw_event->status; |
2009 | event.param.conn.private_data = iw_event->private_data; | |
2010 | event.param.conn.private_data_len = iw_event->private_data_len; | |
2011 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
2012 | if (ret) { |
2013 | /* Destroy the CM ID by returning a non-zero value. */ | |
2014 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 2015 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2016 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
2017 | rdma_destroy_id(&id_priv->id); |
2018 | return ret; | |
2019 | } | |
2020 | ||
de910bd9 | 2021 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
2022 | return ret; |
2023 | } | |
2024 | ||
2025 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
2026 | struct iw_cm_event *iw_event) | |
2027 | { | |
2028 | struct rdma_cm_id *new_cm_id; | |
2029 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 2030 | struct rdma_cm_event event; |
07ebafba | 2031 | int ret; |
24d44a39 SW |
2032 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
2033 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba TT |
2034 | |
2035 | listen_id = cm_id->context; | |
550e5ca7 | 2036 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 2037 | return -ECONNABORTED; |
07ebafba TT |
2038 | |
2039 | /* Create a new RDMA id for the new IW CM ID */ | |
fa20105e GS |
2040 | new_cm_id = rdma_create_id(listen_id->id.route.addr.dev_addr.net, |
2041 | listen_id->id.event_handler, | |
07ebafba | 2042 | listen_id->id.context, |
b26f9b99 | 2043 | RDMA_PS_TCP, IB_QPT_RC); |
10f32065 | 2044 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
2045 | ret = -ENOMEM; |
2046 | goto out; | |
2047 | } | |
2048 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 2049 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 2050 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 2051 | |
dd5f03be | 2052 | ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr, NULL); |
07ebafba | 2053 | if (ret) { |
de910bd9 | 2054 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
2055 | rdma_destroy_id(new_cm_id); |
2056 | goto out; | |
2057 | } | |
2058 | ||
be9130cc | 2059 | ret = cma_acquire_dev(conn_id, listen_id); |
07ebafba | 2060 | if (ret) { |
de910bd9 | 2061 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
2062 | rdma_destroy_id(new_cm_id); |
2063 | goto out; | |
2064 | } | |
2065 | ||
2066 | conn_id->cm_id.iw = cm_id; | |
2067 | cm_id->context = conn_id; | |
2068 | cm_id->cm_handler = cma_iw_handler; | |
2069 | ||
24d44a39 SW |
2070 | memcpy(cma_src_addr(conn_id), laddr, rdma_addr_size(laddr)); |
2071 | memcpy(cma_dst_addr(conn_id), raddr, rdma_addr_size(raddr)); | |
07ebafba | 2072 | |
a1b1b61f SH |
2073 | memset(&event, 0, sizeof event); |
2074 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
2075 | event.param.conn.private_data = iw_event->private_data; | |
2076 | event.param.conn.private_data_len = iw_event->private_data_len; | |
3ebeebc3 KS |
2077 | event.param.conn.initiator_depth = iw_event->ird; |
2078 | event.param.conn.responder_resources = iw_event->ord; | |
25ae21a1 SH |
2079 | |
2080 | /* | |
2081 | * Protect against the user destroying conn_id from another thread | |
2082 | * until we're done accessing it. | |
2083 | */ | |
2084 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 2085 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
2086 | if (ret) { |
2087 | /* User wants to destroy the CM ID */ | |
2088 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 2089 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 2090 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 2091 | cma_deref_id(conn_id); |
07ebafba | 2092 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 2093 | goto out; |
07ebafba TT |
2094 | } |
2095 | ||
de910bd9 | 2096 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 2097 | cma_deref_id(conn_id); |
de910bd9 | 2098 | |
07ebafba | 2099 | out: |
de910bd9 | 2100 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
2101 | return ret; |
2102 | } | |
2103 | ||
e51060f0 SH |
2104 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
2105 | { | |
e51060f0 | 2106 | struct sockaddr *addr; |
0c9361fc | 2107 | struct ib_cm_id *id; |
e51060f0 | 2108 | __be64 svc_id; |
e51060f0 | 2109 | |
51efe394 HE |
2110 | addr = cma_src_addr(id_priv); |
2111 | svc_id = rdma_get_service_id(&id_priv->id, addr); | |
2112 | id = ib_cm_insert_listen(id_priv->id.device, cma_req_handler, svc_id); | |
0c9361fc JM |
2113 | if (IS_ERR(id)) |
2114 | return PTR_ERR(id); | |
0c9361fc | 2115 | id_priv->cm_id.ib = id; |
e51060f0 | 2116 | |
51efe394 | 2117 | return 0; |
e51060f0 SH |
2118 | } |
2119 | ||
07ebafba TT |
2120 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
2121 | { | |
2122 | int ret; | |
0c9361fc JM |
2123 | struct iw_cm_id *id; |
2124 | ||
2125 | id = iw_create_cm_id(id_priv->id.device, | |
2126 | iw_conn_req_handler, | |
2127 | id_priv); | |
2128 | if (IS_ERR(id)) | |
2129 | return PTR_ERR(id); | |
07ebafba | 2130 | |
68cdba06 | 2131 | id->tos = id_priv->tos; |
0c9361fc | 2132 | id_priv->cm_id.iw = id; |
07ebafba | 2133 | |
24d44a39 SW |
2134 | memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv), |
2135 | rdma_addr_size(cma_src_addr(id_priv))); | |
07ebafba TT |
2136 | |
2137 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
2138 | ||
2139 | if (ret) { | |
2140 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
2141 | id_priv->cm_id.iw = NULL; | |
2142 | } | |
2143 | ||
2144 | return ret; | |
2145 | } | |
2146 | ||
e51060f0 SH |
2147 | static int cma_listen_handler(struct rdma_cm_id *id, |
2148 | struct rdma_cm_event *event) | |
2149 | { | |
2150 | struct rdma_id_private *id_priv = id->context; | |
2151 | ||
2152 | id->context = id_priv->id.context; | |
2153 | id->event_handler = id_priv->id.event_handler; | |
2154 | return id_priv->id.event_handler(id, event); | |
2155 | } | |
2156 | ||
2157 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
2158 | struct cma_device *cma_dev) | |
2159 | { | |
2160 | struct rdma_id_private *dev_id_priv; | |
2161 | struct rdma_cm_id *id; | |
fa20105e | 2162 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
2163 | int ret; |
2164 | ||
72219cea | 2165 | if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1)) |
94d0c939 SH |
2166 | return; |
2167 | ||
fa20105e | 2168 | id = rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps, |
b26f9b99 | 2169 | id_priv->id.qp_type); |
e51060f0 SH |
2170 | if (IS_ERR(id)) |
2171 | return; | |
2172 | ||
2173 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
2174 | ||
550e5ca7 | 2175 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
f4753834 SH |
2176 | memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv), |
2177 | rdma_addr_size(cma_src_addr(id_priv))); | |
e51060f0 | 2178 | |
045959db | 2179 | _cma_attach_to_dev(dev_id_priv, cma_dev); |
e51060f0 | 2180 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); |
d02d1f53 SH |
2181 | atomic_inc(&id_priv->refcount); |
2182 | dev_id_priv->internal_id = 1; | |
5b0ec991 | 2183 | dev_id_priv->afonly = id_priv->afonly; |
e51060f0 SH |
2184 | |
2185 | ret = rdma_listen(id, id_priv->backlog); | |
2186 | if (ret) | |
d02d1f53 | 2187 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 2188 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
2189 | } |
2190 | ||
2191 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
2192 | { | |
2193 | struct cma_device *cma_dev; | |
2194 | ||
2195 | mutex_lock(&lock); | |
2196 | list_add_tail(&id_priv->list, &listen_any_list); | |
2197 | list_for_each_entry(cma_dev, &dev_list, list) | |
2198 | cma_listen_on_dev(id_priv, cma_dev); | |
2199 | mutex_unlock(&lock); | |
2200 | } | |
2201 | ||
a81c994d SH |
2202 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
2203 | { | |
2204 | struct rdma_id_private *id_priv; | |
2205 | ||
2206 | id_priv = container_of(id, struct rdma_id_private, id); | |
2207 | id_priv->tos = (u8) tos; | |
2208 | } | |
2209 | EXPORT_SYMBOL(rdma_set_service_type); | |
2210 | ||
e51060f0 SH |
2211 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
2212 | void *context) | |
2213 | { | |
2214 | struct cma_work *work = context; | |
2215 | struct rdma_route *route; | |
2216 | ||
2217 | route = &work->id->id.route; | |
2218 | ||
2219 | if (!status) { | |
2220 | route->num_paths = 1; | |
2221 | *route->path_rec = *path_rec; | |
2222 | } else { | |
550e5ca7 NM |
2223 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2224 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 2225 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 2226 | work->event.status = status; |
e51060f0 SH |
2227 | } |
2228 | ||
2229 | queue_work(cma_wq, &work->work); | |
2230 | } | |
2231 | ||
2232 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
2233 | struct cma_work *work) | |
2234 | { | |
f4753834 | 2235 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 2236 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
2237 | ib_sa_comp_mask comp_mask; |
2238 | struct sockaddr_in6 *sin6; | |
f68194ca | 2239 | struct sockaddr_ib *sib; |
e51060f0 SH |
2240 | |
2241 | memset(&path_rec, 0, sizeof path_rec); | |
f4753834 SH |
2242 | rdma_addr_get_sgid(dev_addr, &path_rec.sgid); |
2243 | rdma_addr_get_dgid(dev_addr, &path_rec.dgid); | |
2244 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
e51060f0 | 2245 | path_rec.numb_path = 1; |
962063e6 | 2246 | path_rec.reversible = 1; |
cf53936f | 2247 | path_rec.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
a81c994d SH |
2248 | |
2249 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
2250 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
2251 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
2252 | ||
f68194ca SH |
2253 | switch (cma_family(id_priv)) { |
2254 | case AF_INET: | |
a81c994d SH |
2255 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
2256 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
f68194ca SH |
2257 | break; |
2258 | case AF_INET6: | |
f4753834 | 2259 | sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
a81c994d SH |
2260 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); |
2261 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
f68194ca SH |
2262 | break; |
2263 | case AF_IB: | |
2264 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); | |
2265 | path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20); | |
2266 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
2267 | break; | |
a81c994d | 2268 | } |
e51060f0 | 2269 | |
c1a0b23b | 2270 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
2271 | id_priv->id.port_num, &path_rec, |
2272 | comp_mask, timeout_ms, | |
2273 | GFP_KERNEL, cma_query_handler, | |
2274 | work, &id_priv->query); | |
e51060f0 SH |
2275 | |
2276 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
2277 | } | |
2278 | ||
c4028958 | 2279 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 2280 | { |
c4028958 | 2281 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
2282 | struct rdma_id_private *id_priv = work->id; |
2283 | int destroy = 0; | |
2284 | ||
de910bd9 | 2285 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2286 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
2287 | goto out; | |
2288 | ||
2289 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2290 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
2291 | destroy = 1; |
2292 | } | |
2293 | out: | |
de910bd9 | 2294 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2295 | cma_deref_id(id_priv); |
2296 | if (destroy) | |
2297 | rdma_destroy_id(&id_priv->id); | |
2298 | kfree(work); | |
2299 | } | |
2300 | ||
dd5bdff8 OG |
2301 | static void cma_ndev_work_handler(struct work_struct *_work) |
2302 | { | |
2303 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
2304 | struct rdma_id_private *id_priv = work->id; | |
2305 | int destroy = 0; | |
2306 | ||
2307 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
2308 | if (id_priv->state == RDMA_CM_DESTROYING || |
2309 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
2310 | goto out; |
2311 | ||
2312 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2313 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
2314 | destroy = 1; |
2315 | } | |
2316 | ||
2317 | out: | |
2318 | mutex_unlock(&id_priv->handler_mutex); | |
2319 | cma_deref_id(id_priv); | |
2320 | if (destroy) | |
2321 | rdma_destroy_id(&id_priv->id); | |
2322 | kfree(work); | |
2323 | } | |
2324 | ||
e51060f0 SH |
2325 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
2326 | { | |
2327 | struct rdma_route *route = &id_priv->id.route; | |
2328 | struct cma_work *work; | |
2329 | int ret; | |
2330 | ||
2331 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2332 | if (!work) | |
2333 | return -ENOMEM; | |
2334 | ||
2335 | work->id = id_priv; | |
c4028958 | 2336 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2337 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2338 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
e51060f0 SH |
2339 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2340 | ||
2341 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2342 | if (!route->path_rec) { | |
2343 | ret = -ENOMEM; | |
2344 | goto err1; | |
2345 | } | |
2346 | ||
2347 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
2348 | if (ret) | |
2349 | goto err2; | |
2350 | ||
2351 | return 0; | |
2352 | err2: | |
2353 | kfree(route->path_rec); | |
2354 | route->path_rec = NULL; | |
2355 | err1: | |
2356 | kfree(work); | |
2357 | return ret; | |
2358 | } | |
2359 | ||
2360 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
2361 | struct ib_sa_path_rec *path_rec, int num_paths) | |
2362 | { | |
2363 | struct rdma_id_private *id_priv; | |
2364 | int ret; | |
2365 | ||
2366 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
2367 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2368 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
2369 | return -EINVAL; |
2370 | ||
9893e742 JL |
2371 | id->route.path_rec = kmemdup(path_rec, sizeof *path_rec * num_paths, |
2372 | GFP_KERNEL); | |
e51060f0 SH |
2373 | if (!id->route.path_rec) { |
2374 | ret = -ENOMEM; | |
2375 | goto err; | |
2376 | } | |
2377 | ||
ae2d9293 | 2378 | id->route.num_paths = num_paths; |
e51060f0 SH |
2379 | return 0; |
2380 | err: | |
550e5ca7 | 2381 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2382 | return ret; |
2383 | } | |
2384 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
2385 | ||
07ebafba TT |
2386 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
2387 | { | |
2388 | struct cma_work *work; | |
2389 | ||
2390 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2391 | if (!work) | |
2392 | return -ENOMEM; | |
2393 | ||
2394 | work->id = id_priv; | |
c4028958 | 2395 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2396 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2397 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
07ebafba TT |
2398 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2399 | queue_work(cma_wq, &work->work); | |
2400 | return 0; | |
2401 | } | |
2402 | ||
eb072c4b EP |
2403 | static int iboe_tos_to_sl(struct net_device *ndev, int tos) |
2404 | { | |
2405 | int prio; | |
2406 | struct net_device *dev; | |
2407 | ||
2408 | prio = rt_tos2priority(tos); | |
2409 | dev = ndev->priv_flags & IFF_802_1Q_VLAN ? | |
2410 | vlan_dev_real_dev(ndev) : ndev; | |
2411 | ||
2412 | if (dev->num_tc) | |
2413 | return netdev_get_prio_tc_map(dev, prio); | |
2414 | ||
2415 | #if IS_ENABLED(CONFIG_VLAN_8021Q) | |
2416 | if (ndev->priv_flags & IFF_802_1Q_VLAN) | |
2417 | return (vlan_dev_get_egress_qos_mask(ndev, prio) & | |
2418 | VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
2419 | #endif | |
2420 | return 0; | |
2421 | } | |
2422 | ||
3c86aa70 EC |
2423 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
2424 | { | |
2425 | struct rdma_route *route = &id_priv->id.route; | |
2426 | struct rdma_addr *addr = &route->addr; | |
c865f246 | 2427 | enum ib_gid_type network_gid_type; |
3c86aa70 EC |
2428 | struct cma_work *work; |
2429 | int ret; | |
3c86aa70 | 2430 | struct net_device *ndev = NULL; |
dd5f03be | 2431 | |
3c86aa70 | 2432 | |
3c86aa70 EC |
2433 | work = kzalloc(sizeof *work, GFP_KERNEL); |
2434 | if (!work) | |
2435 | return -ENOMEM; | |
2436 | ||
2437 | work->id = id_priv; | |
2438 | INIT_WORK(&work->work, cma_work_handler); | |
2439 | ||
2440 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2441 | if (!route->path_rec) { | |
2442 | ret = -ENOMEM; | |
2443 | goto err1; | |
2444 | } | |
2445 | ||
2446 | route->num_paths = 1; | |
2447 | ||
abae1b71 | 2448 | if (addr->dev_addr.bound_dev_if) { |
3c86aa70 | 2449 | ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); |
20029832 MB |
2450 | if (!ndev) |
2451 | return -ENODEV; | |
2452 | ||
2453 | if (ndev->flags & IFF_LOOPBACK) { | |
2454 | dev_put(ndev); | |
2455 | if (!id_priv->id.device->get_netdev) | |
2456 | return -EOPNOTSUPP; | |
2457 | ||
2458 | ndev = id_priv->id.device->get_netdev(id_priv->id.device, | |
2459 | id_priv->id.port_num); | |
2460 | if (!ndev) | |
2461 | return -ENODEV; | |
2462 | } | |
2463 | ||
abae1b71 | 2464 | route->path_rec->net = &init_net; |
20029832 | 2465 | route->path_rec->ifindex = ndev->ifindex; |
cb57bb84 | 2466 | route->path_rec->gid_type = id_priv->gid_type; |
abae1b71 | 2467 | } |
3c86aa70 EC |
2468 | if (!ndev) { |
2469 | ret = -ENODEV; | |
2470 | goto err2; | |
2471 | } | |
2472 | ||
dd5f03be | 2473 | memcpy(route->path_rec->dmac, addr->dev_addr.dst_dev_addr, ETH_ALEN); |
af7bd463 | 2474 | |
7b85627b MS |
2475 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
2476 | &route->path_rec->sgid); | |
2477 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.dst_addr, | |
2478 | &route->path_rec->dgid); | |
af7bd463 | 2479 | |
c865f246 SK |
2480 | /* Use the hint from IP Stack to select GID Type */ |
2481 | network_gid_type = ib_network_to_gid_type(addr->dev_addr.network); | |
2482 | if (addr->dev_addr.network != RDMA_NETWORK_IB) { | |
2483 | route->path_rec->gid_type = network_gid_type; | |
2484 | /* TODO: get the hoplimit from the inet/inet6 device */ | |
2485 | route->path_rec->hop_limit = IPV6_DEFAULT_HOPLIMIT; | |
2486 | } else { | |
2487 | route->path_rec->hop_limit = 1; | |
2488 | } | |
af7bd463 EC |
2489 | route->path_rec->reversible = 1; |
2490 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
2491 | route->path_rec->mtu_selector = IB_SA_EQ; | |
eb072c4b | 2492 | route->path_rec->sl = iboe_tos_to_sl(ndev, id_priv->tos); |
3c86aa70 EC |
2493 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
2494 | route->path_rec->rate_selector = IB_SA_EQ; | |
2495 | route->path_rec->rate = iboe_get_rate(ndev); | |
2496 | dev_put(ndev); | |
2497 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
2498 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
2499 | if (!route->path_rec->mtu) { | |
2500 | ret = -EINVAL; | |
2501 | goto err2; | |
2502 | } | |
2503 | ||
550e5ca7 NM |
2504 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2505 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
3c86aa70 EC |
2506 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2507 | work->event.status = 0; | |
2508 | ||
2509 | queue_work(cma_wq, &work->work); | |
2510 | ||
2511 | return 0; | |
2512 | ||
2513 | err2: | |
2514 | kfree(route->path_rec); | |
2515 | route->path_rec = NULL; | |
2516 | err1: | |
2517 | kfree(work); | |
2518 | return ret; | |
2519 | } | |
2520 | ||
e51060f0 SH |
2521 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
2522 | { | |
2523 | struct rdma_id_private *id_priv; | |
2524 | int ret; | |
2525 | ||
2526 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2527 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
2528 | return -EINVAL; |
2529 | ||
2530 | atomic_inc(&id_priv->refcount); | |
fe53ba2f | 2531 | if (rdma_cap_ib_sa(id->device, id->port_num)) |
c72f2189 | 2532 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
5d9fb044 | 2533 | else if (rdma_protocol_roce(id->device, id->port_num)) |
c72f2189 MW |
2534 | ret = cma_resolve_iboe_route(id_priv); |
2535 | else if (rdma_protocol_iwarp(id->device, id->port_num)) | |
07ebafba | 2536 | ret = cma_resolve_iw_route(id_priv, timeout_ms); |
c72f2189 | 2537 | else |
e51060f0 | 2538 | ret = -ENOSYS; |
c72f2189 | 2539 | |
e51060f0 SH |
2540 | if (ret) |
2541 | goto err; | |
2542 | ||
2543 | return 0; | |
2544 | err: | |
550e5ca7 | 2545 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2546 | cma_deref_id(id_priv); |
2547 | return ret; | |
2548 | } | |
2549 | EXPORT_SYMBOL(rdma_resolve_route); | |
2550 | ||
6a3e362d SH |
2551 | static void cma_set_loopback(struct sockaddr *addr) |
2552 | { | |
2553 | switch (addr->sa_family) { | |
2554 | case AF_INET: | |
2555 | ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
2556 | break; | |
2557 | case AF_INET6: | |
2558 | ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr, | |
2559 | 0, 0, 0, htonl(1)); | |
2560 | break; | |
2561 | default: | |
2562 | ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr, | |
2563 | 0, 0, 0, htonl(1)); | |
2564 | break; | |
2565 | } | |
2566 | } | |
2567 | ||
e51060f0 SH |
2568 | static int cma_bind_loopback(struct rdma_id_private *id_priv) |
2569 | { | |
b0569e40 | 2570 | struct cma_device *cma_dev, *cur_dev; |
e51060f0 | 2571 | struct ib_port_attr port_attr; |
f0ee3404 | 2572 | union ib_gid gid; |
e51060f0 SH |
2573 | u16 pkey; |
2574 | int ret; | |
2575 | u8 p; | |
2576 | ||
b0569e40 | 2577 | cma_dev = NULL; |
e51060f0 | 2578 | mutex_lock(&lock); |
b0569e40 SH |
2579 | list_for_each_entry(cur_dev, &dev_list, list) { |
2580 | if (cma_family(id_priv) == AF_IB && | |
72219cea | 2581 | !rdma_cap_ib_cm(cur_dev->device, 1)) |
b0569e40 SH |
2582 | continue; |
2583 | ||
2584 | if (!cma_dev) | |
2585 | cma_dev = cur_dev; | |
2586 | ||
2587 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { | |
2588 | if (!ib_query_port(cur_dev->device, p, &port_attr) && | |
2589 | port_attr.state == IB_PORT_ACTIVE) { | |
2590 | cma_dev = cur_dev; | |
2591 | goto port_found; | |
2592 | } | |
2593 | } | |
2594 | } | |
2595 | ||
2596 | if (!cma_dev) { | |
e82153b5 KK |
2597 | ret = -ENODEV; |
2598 | goto out; | |
2599 | } | |
e51060f0 | 2600 | |
e82153b5 | 2601 | p = 1; |
e51060f0 SH |
2602 | |
2603 | port_found: | |
55ee3ab2 | 2604 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid, NULL); |
e51060f0 SH |
2605 | if (ret) |
2606 | goto out; | |
2607 | ||
2608 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
2609 | if (ret) | |
2610 | goto out; | |
2611 | ||
6f8372b6 | 2612 | id_priv->id.route.addr.dev_addr.dev_type = |
21655afc | 2613 | (rdma_protocol_ib(cma_dev->device, p)) ? |
6f8372b6 SH |
2614 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
2615 | ||
2616 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
2617 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
2618 | id_priv->id.port_num = p; | |
2619 | cma_attach_to_dev(id_priv, cma_dev); | |
f4753834 | 2620 | cma_set_loopback(cma_src_addr(id_priv)); |
e51060f0 SH |
2621 | out: |
2622 | mutex_unlock(&lock); | |
2623 | return ret; | |
2624 | } | |
2625 | ||
2626 | static void addr_handler(int status, struct sockaddr *src_addr, | |
2627 | struct rdma_dev_addr *dev_addr, void *context) | |
2628 | { | |
2629 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 2630 | struct rdma_cm_event event; |
e51060f0 | 2631 | |
a1b1b61f | 2632 | memset(&event, 0, sizeof event); |
de910bd9 | 2633 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
2634 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
2635 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 2636 | goto out; |
61a73c70 | 2637 | |
7b85627b | 2638 | memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr)); |
61a73c70 | 2639 | if (!status && !id_priv->cma_dev) |
be9130cc | 2640 | status = cma_acquire_dev(id_priv, NULL); |
e51060f0 SH |
2641 | |
2642 | if (status) { | |
550e5ca7 NM |
2643 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2644 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 2645 | goto out; |
a1b1b61f SH |
2646 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
2647 | event.status = status; | |
7b85627b | 2648 | } else |
a1b1b61f | 2649 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 | 2650 | |
a1b1b61f | 2651 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 2652 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2653 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2654 | cma_deref_id(id_priv); |
2655 | rdma_destroy_id(&id_priv->id); | |
2656 | return; | |
2657 | } | |
2658 | out: | |
de910bd9 | 2659 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2660 | cma_deref_id(id_priv); |
2661 | } | |
2662 | ||
2663 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
2664 | { | |
2665 | struct cma_work *work; | |
f0ee3404 | 2666 | union ib_gid gid; |
e51060f0 SH |
2667 | int ret; |
2668 | ||
2669 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2670 | if (!work) | |
2671 | return -ENOMEM; | |
2672 | ||
2673 | if (!id_priv->cma_dev) { | |
2674 | ret = cma_bind_loopback(id_priv); | |
2675 | if (ret) | |
2676 | goto err; | |
2677 | } | |
2678 | ||
6f8372b6 SH |
2679 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
2680 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 2681 | |
e51060f0 | 2682 | work->id = id_priv; |
c4028958 | 2683 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2684 | work->old_state = RDMA_CM_ADDR_QUERY; |
2685 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 SH |
2686 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
2687 | queue_work(cma_wq, &work->work); | |
2688 | return 0; | |
2689 | err: | |
2690 | kfree(work); | |
2691 | return ret; | |
2692 | } | |
2693 | ||
f17df3b0 SH |
2694 | static int cma_resolve_ib_addr(struct rdma_id_private *id_priv) |
2695 | { | |
2696 | struct cma_work *work; | |
2697 | int ret; | |
2698 | ||
2699 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2700 | if (!work) | |
2701 | return -ENOMEM; | |
2702 | ||
2703 | if (!id_priv->cma_dev) { | |
2704 | ret = cma_resolve_ib_dev(id_priv); | |
2705 | if (ret) | |
2706 | goto err; | |
2707 | } | |
2708 | ||
2709 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *) | |
2710 | &(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr)); | |
2711 | ||
2712 | work->id = id_priv; | |
2713 | INIT_WORK(&work->work, cma_work_handler); | |
2714 | work->old_state = RDMA_CM_ADDR_QUERY; | |
2715 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
2716 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
2717 | queue_work(cma_wq, &work->work); | |
2718 | return 0; | |
2719 | err: | |
2720 | kfree(work); | |
2721 | return ret; | |
2722 | } | |
2723 | ||
e51060f0 SH |
2724 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, |
2725 | struct sockaddr *dst_addr) | |
2726 | { | |
d14714df SH |
2727 | if (!src_addr || !src_addr->sa_family) { |
2728 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
f17df3b0 SH |
2729 | src_addr->sa_family = dst_addr->sa_family; |
2730 | if (dst_addr->sa_family == AF_INET6) { | |
6c26a771 SB |
2731 | struct sockaddr_in6 *src_addr6 = (struct sockaddr_in6 *) src_addr; |
2732 | struct sockaddr_in6 *dst_addr6 = (struct sockaddr_in6 *) dst_addr; | |
2733 | src_addr6->sin6_scope_id = dst_addr6->sin6_scope_id; | |
2734 | if (ipv6_addr_type(&dst_addr6->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
2735 | id->route.addr.dev_addr.bound_dev_if = dst_addr6->sin6_scope_id; | |
f17df3b0 SH |
2736 | } else if (dst_addr->sa_family == AF_IB) { |
2737 | ((struct sockaddr_ib *) src_addr)->sib_pkey = | |
2738 | ((struct sockaddr_ib *) dst_addr)->sib_pkey; | |
d14714df SH |
2739 | } |
2740 | } | |
2741 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
2742 | } |
2743 | ||
2744 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2745 | struct sockaddr *dst_addr, int timeout_ms) | |
2746 | { | |
2747 | struct rdma_id_private *id_priv; | |
2748 | int ret; | |
2749 | ||
2750 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2751 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 SH |
2752 | ret = cma_bind_addr(id, src_addr, dst_addr); |
2753 | if (ret) | |
2754 | return ret; | |
2755 | } | |
2756 | ||
4ae7152e SH |
2757 | if (cma_family(id_priv) != dst_addr->sa_family) |
2758 | return -EINVAL; | |
2759 | ||
550e5ca7 | 2760 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
2761 | return -EINVAL; |
2762 | ||
2763 | atomic_inc(&id_priv->refcount); | |
f4753834 | 2764 | memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); |
f17df3b0 | 2765 | if (cma_any_addr(dst_addr)) { |
e51060f0 | 2766 | ret = cma_resolve_loopback(id_priv); |
f17df3b0 SH |
2767 | } else { |
2768 | if (dst_addr->sa_family == AF_IB) { | |
2769 | ret = cma_resolve_ib_addr(id_priv); | |
2770 | } else { | |
2771 | ret = rdma_resolve_ip(&addr_client, cma_src_addr(id_priv), | |
2772 | dst_addr, &id->route.addr.dev_addr, | |
2773 | timeout_ms, addr_handler, id_priv); | |
2774 | } | |
2775 | } | |
e51060f0 SH |
2776 | if (ret) |
2777 | goto err; | |
2778 | ||
2779 | return 0; | |
2780 | err: | |
550e5ca7 | 2781 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
2782 | cma_deref_id(id_priv); |
2783 | return ret; | |
2784 | } | |
2785 | EXPORT_SYMBOL(rdma_resolve_addr); | |
2786 | ||
a9bb7912 HS |
2787 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
2788 | { | |
2789 | struct rdma_id_private *id_priv; | |
2790 | unsigned long flags; | |
2791 | int ret; | |
2792 | ||
2793 | id_priv = container_of(id, struct rdma_id_private, id); | |
2794 | spin_lock_irqsave(&id_priv->lock, flags); | |
c8dea2f9 | 2795 | if (reuse || id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2796 | id_priv->reuseaddr = reuse; |
2797 | ret = 0; | |
2798 | } else { | |
2799 | ret = -EINVAL; | |
2800 | } | |
2801 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2802 | return ret; | |
2803 | } | |
2804 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
2805 | ||
68602120 SH |
2806 | int rdma_set_afonly(struct rdma_cm_id *id, int afonly) |
2807 | { | |
2808 | struct rdma_id_private *id_priv; | |
2809 | unsigned long flags; | |
2810 | int ret; | |
2811 | ||
2812 | id_priv = container_of(id, struct rdma_id_private, id); | |
2813 | spin_lock_irqsave(&id_priv->lock, flags); | |
2814 | if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { | |
2815 | id_priv->options |= (1 << CMA_OPTION_AFONLY); | |
2816 | id_priv->afonly = afonly; | |
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_afonly); | |
2825 | ||
e51060f0 SH |
2826 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
2827 | struct rdma_id_private *id_priv) | |
2828 | { | |
58afdcb7 SH |
2829 | struct sockaddr *addr; |
2830 | struct sockaddr_ib *sib; | |
2831 | u64 sid, mask; | |
2832 | __be16 port; | |
e51060f0 | 2833 | |
f4753834 | 2834 | addr = cma_src_addr(id_priv); |
58afdcb7 SH |
2835 | port = htons(bind_list->port); |
2836 | ||
2837 | switch (addr->sa_family) { | |
2838 | case AF_INET: | |
2839 | ((struct sockaddr_in *) addr)->sin_port = port; | |
2840 | break; | |
2841 | case AF_INET6: | |
2842 | ((struct sockaddr_in6 *) addr)->sin6_port = port; | |
2843 | break; | |
2844 | case AF_IB: | |
2845 | sib = (struct sockaddr_ib *) addr; | |
2846 | sid = be64_to_cpu(sib->sib_sid); | |
2847 | mask = be64_to_cpu(sib->sib_sid_mask); | |
2848 | sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port)); | |
2849 | sib->sib_sid_mask = cpu_to_be64(~0ULL); | |
2850 | break; | |
2851 | } | |
e51060f0 SH |
2852 | id_priv->bind_list = bind_list; |
2853 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
2854 | } | |
2855 | ||
aac978e1 HE |
2856 | static int cma_alloc_port(enum rdma_port_space ps, |
2857 | struct rdma_id_private *id_priv, unsigned short snum) | |
e51060f0 SH |
2858 | { |
2859 | struct rdma_bind_list *bind_list; | |
3b069c5d | 2860 | int ret; |
e51060f0 | 2861 | |
cb164b8c | 2862 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
2863 | if (!bind_list) |
2864 | return -ENOMEM; | |
2865 | ||
fa20105e GS |
2866 | ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list, |
2867 | snum); | |
3b069c5d TH |
2868 | if (ret < 0) |
2869 | goto err; | |
aedec080 SH |
2870 | |
2871 | bind_list->ps = ps; | |
3b069c5d | 2872 | bind_list->port = (unsigned short)ret; |
aedec080 SH |
2873 | cma_bind_port(bind_list, id_priv); |
2874 | return 0; | |
3b069c5d | 2875 | err: |
aedec080 | 2876 | kfree(bind_list); |
3b069c5d | 2877 | return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; |
aedec080 | 2878 | } |
e51060f0 | 2879 | |
aac978e1 HE |
2880 | static int cma_alloc_any_port(enum rdma_port_space ps, |
2881 | struct rdma_id_private *id_priv) | |
aedec080 | 2882 | { |
5d7220e8 TH |
2883 | static unsigned int last_used_port; |
2884 | int low, high, remaining; | |
2885 | unsigned int rover; | |
fa20105e | 2886 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 | 2887 | |
fa20105e | 2888 | inet_get_local_port_range(net, &low, &high); |
5d7220e8 | 2889 | remaining = (high - low) + 1; |
63862b5b | 2890 | rover = prandom_u32() % remaining + low; |
5d7220e8 TH |
2891 | retry: |
2892 | if (last_used_port != rover && | |
fa20105e | 2893 | !cma_ps_find(net, ps, (unsigned short)rover)) { |
5d7220e8 TH |
2894 | int ret = cma_alloc_port(ps, id_priv, rover); |
2895 | /* | |
2896 | * Remember previously used port number in order to avoid | |
2897 | * re-using same port immediately after it is closed. | |
2898 | */ | |
2899 | if (!ret) | |
2900 | last_used_port = rover; | |
2901 | if (ret != -EADDRNOTAVAIL) | |
2902 | return ret; | |
e51060f0 | 2903 | } |
5d7220e8 TH |
2904 | if (--remaining) { |
2905 | rover++; | |
2906 | if ((rover < low) || (rover > high)) | |
2907 | rover = low; | |
2908 | goto retry; | |
2909 | } | |
2910 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
2911 | } |
2912 | ||
a9bb7912 HS |
2913 | /* |
2914 | * Check that the requested port is available. This is called when trying to | |
2915 | * bind to a specific port, or when trying to listen on a bound port. In | |
2916 | * the latter case, the provided id_priv may already be on the bind_list, but | |
2917 | * we still need to check that it's okay to start listening. | |
2918 | */ | |
2919 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
2920 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
2921 | { |
2922 | struct rdma_id_private *cur_id; | |
43b752da | 2923 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 2924 | |
f4753834 | 2925 | addr = cma_src_addr(id_priv); |
b67bfe0d | 2926 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { |
a9bb7912 HS |
2927 | if (id_priv == cur_id) |
2928 | continue; | |
3cd96564 | 2929 | |
5b0ec991 SH |
2930 | if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && |
2931 | cur_id->reuseaddr) | |
2932 | continue; | |
e51060f0 | 2933 | |
f4753834 | 2934 | cur_addr = cma_src_addr(cur_id); |
5b0ec991 SH |
2935 | if (id_priv->afonly && cur_id->afonly && |
2936 | (addr->sa_family != cur_addr->sa_family)) | |
2937 | continue; | |
2938 | ||
2939 | if (cma_any_addr(addr) || cma_any_addr(cur_addr)) | |
2940 | return -EADDRNOTAVAIL; | |
2941 | ||
2942 | if (!cma_addr_cmp(addr, cur_addr)) | |
2943 | return -EADDRINUSE; | |
a9bb7912 | 2944 | } |
e51060f0 SH |
2945 | return 0; |
2946 | } | |
2947 | ||
aac978e1 HE |
2948 | static int cma_use_port(enum rdma_port_space ps, |
2949 | struct rdma_id_private *id_priv) | |
a9bb7912 HS |
2950 | { |
2951 | struct rdma_bind_list *bind_list; | |
2952 | unsigned short snum; | |
2953 | int ret; | |
2954 | ||
f4753834 | 2955 | snum = ntohs(cma_port(cma_src_addr(id_priv))); |
a9bb7912 HS |
2956 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
2957 | return -EACCES; | |
2958 | ||
fa20105e | 2959 | bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum); |
a9bb7912 HS |
2960 | if (!bind_list) { |
2961 | ret = cma_alloc_port(ps, id_priv, snum); | |
2962 | } else { | |
2963 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
2964 | if (!ret) | |
2965 | cma_bind_port(bind_list, id_priv); | |
2966 | } | |
2967 | return ret; | |
2968 | } | |
2969 | ||
2970 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
2971 | { | |
2972 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
2973 | int ret = 0; | |
2974 | ||
2975 | mutex_lock(&lock); | |
2976 | if (bind_list->owners.first->next) | |
2977 | ret = cma_check_port(bind_list, id_priv, 0); | |
2978 | mutex_unlock(&lock); | |
2979 | return ret; | |
2980 | } | |
2981 | ||
aac978e1 HE |
2982 | static enum rdma_port_space cma_select_inet_ps( |
2983 | struct rdma_id_private *id_priv) | |
e51060f0 | 2984 | { |
e51060f0 | 2985 | switch (id_priv->id.ps) { |
e51060f0 | 2986 | case RDMA_PS_TCP: |
628e5f6d | 2987 | case RDMA_PS_UDP: |
c8f6a362 | 2988 | case RDMA_PS_IPOIB: |
2d2e9415 | 2989 | case RDMA_PS_IB: |
aac978e1 | 2990 | return id_priv->id.ps; |
e51060f0 | 2991 | default: |
aac978e1 HE |
2992 | |
2993 | return 0; | |
58afdcb7 SH |
2994 | } |
2995 | } | |
2996 | ||
aac978e1 | 2997 | static enum rdma_port_space cma_select_ib_ps(struct rdma_id_private *id_priv) |
58afdcb7 | 2998 | { |
aac978e1 | 2999 | enum rdma_port_space ps = 0; |
58afdcb7 SH |
3000 | struct sockaddr_ib *sib; |
3001 | u64 sid_ps, mask, sid; | |
3002 | ||
f4753834 | 3003 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); |
58afdcb7 SH |
3004 | mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK; |
3005 | sid = be64_to_cpu(sib->sib_sid) & mask; | |
3006 | ||
3007 | if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) { | |
3008 | sid_ps = RDMA_IB_IP_PS_IB; | |
aac978e1 | 3009 | ps = RDMA_PS_IB; |
58afdcb7 SH |
3010 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) && |
3011 | (sid == (RDMA_IB_IP_PS_TCP & mask))) { | |
3012 | sid_ps = RDMA_IB_IP_PS_TCP; | |
aac978e1 | 3013 | ps = RDMA_PS_TCP; |
58afdcb7 SH |
3014 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) && |
3015 | (sid == (RDMA_IB_IP_PS_UDP & mask))) { | |
3016 | sid_ps = RDMA_IB_IP_PS_UDP; | |
aac978e1 | 3017 | ps = RDMA_PS_UDP; |
e51060f0 SH |
3018 | } |
3019 | ||
58afdcb7 SH |
3020 | if (ps) { |
3021 | sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib))); | |
3022 | sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK | | |
3023 | be64_to_cpu(sib->sib_sid_mask)); | |
3024 | } | |
3025 | return ps; | |
3026 | } | |
3027 | ||
3028 | static int cma_get_port(struct rdma_id_private *id_priv) | |
3029 | { | |
aac978e1 | 3030 | enum rdma_port_space ps; |
58afdcb7 SH |
3031 | int ret; |
3032 | ||
f4753834 | 3033 | if (cma_family(id_priv) != AF_IB) |
58afdcb7 SH |
3034 | ps = cma_select_inet_ps(id_priv); |
3035 | else | |
3036 | ps = cma_select_ib_ps(id_priv); | |
3037 | if (!ps) | |
3038 | return -EPROTONOSUPPORT; | |
3039 | ||
e51060f0 | 3040 | mutex_lock(&lock); |
f4753834 | 3041 | if (cma_any_port(cma_src_addr(id_priv))) |
aedec080 | 3042 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
3043 | else |
3044 | ret = cma_use_port(ps, id_priv); | |
3045 | mutex_unlock(&lock); | |
3046 | ||
3047 | return ret; | |
3048 | } | |
3049 | ||
d14714df SH |
3050 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
3051 | struct sockaddr *addr) | |
3052 | { | |
d90f9b35 | 3053 | #if IS_ENABLED(CONFIG_IPV6) |
d14714df SH |
3054 | struct sockaddr_in6 *sin6; |
3055 | ||
3056 | if (addr->sa_family != AF_INET6) | |
3057 | return 0; | |
3058 | ||
3059 | sin6 = (struct sockaddr_in6 *) addr; | |
5462eddd SK |
3060 | |
3061 | if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)) | |
3062 | return 0; | |
3063 | ||
3064 | if (!sin6->sin6_scope_id) | |
d14714df SH |
3065 | return -EINVAL; |
3066 | ||
3067 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
3068 | #endif | |
3069 | return 0; | |
3070 | } | |
3071 | ||
a9bb7912 HS |
3072 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
3073 | { | |
3074 | struct rdma_id_private *id_priv; | |
3075 | int ret; | |
3076 | ||
3077 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3078 | if (id_priv->state == RDMA_CM_IDLE) { |
f4753834 SH |
3079 | id->route.addr.src_addr.ss_family = AF_INET; |
3080 | ret = rdma_bind_addr(id, cma_src_addr(id_priv)); | |
a9bb7912 HS |
3081 | if (ret) |
3082 | return ret; | |
3083 | } | |
3084 | ||
550e5ca7 | 3085 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
3086 | return -EINVAL; |
3087 | ||
3088 | if (id_priv->reuseaddr) { | |
3089 | ret = cma_bind_listen(id_priv); | |
3090 | if (ret) | |
3091 | goto err; | |
3092 | } | |
3093 | ||
3094 | id_priv->backlog = backlog; | |
3095 | if (id->device) { | |
72219cea | 3096 | if (rdma_cap_ib_cm(id->device, 1)) { |
a9bb7912 HS |
3097 | ret = cma_ib_listen(id_priv); |
3098 | if (ret) | |
3099 | goto err; | |
04215330 | 3100 | } else if (rdma_cap_iw_cm(id->device, 1)) { |
a9bb7912 HS |
3101 | ret = cma_iw_listen(id_priv, backlog); |
3102 | if (ret) | |
3103 | goto err; | |
21655afc | 3104 | } else { |
a9bb7912 HS |
3105 | ret = -ENOSYS; |
3106 | goto err; | |
3107 | } | |
3108 | } else | |
3109 | cma_listen_on_all(id_priv); | |
3110 | ||
3111 | return 0; | |
3112 | err: | |
3113 | id_priv->backlog = 0; | |
550e5ca7 | 3114 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
3115 | return ret; |
3116 | } | |
3117 | EXPORT_SYMBOL(rdma_listen); | |
3118 | ||
e51060f0 SH |
3119 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
3120 | { | |
3121 | struct rdma_id_private *id_priv; | |
3122 | int ret; | |
3123 | ||
680f920a SH |
3124 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 && |
3125 | addr->sa_family != AF_IB) | |
e51060f0 SH |
3126 | return -EAFNOSUPPORT; |
3127 | ||
3128 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3129 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
3130 | return -EINVAL; |
3131 | ||
d14714df SH |
3132 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
3133 | if (ret) | |
3134 | goto err1; | |
3135 | ||
7b85627b | 3136 | memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr)); |
8523c048 | 3137 | if (!cma_any_addr(addr)) { |
680f920a | 3138 | ret = cma_translate_addr(addr, &id->route.addr.dev_addr); |
e51060f0 | 3139 | if (ret) |
255d0c14 KK |
3140 | goto err1; |
3141 | ||
be9130cc | 3142 | ret = cma_acquire_dev(id_priv, NULL); |
255d0c14 KK |
3143 | if (ret) |
3144 | goto err1; | |
e51060f0 SH |
3145 | } |
3146 | ||
68602120 SH |
3147 | if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { |
3148 | if (addr->sa_family == AF_INET) | |
3149 | id_priv->afonly = 1; | |
5b0ec991 | 3150 | #if IS_ENABLED(CONFIG_IPV6) |
fa20105e GS |
3151 | else if (addr->sa_family == AF_INET6) { |
3152 | struct net *net = id_priv->id.route.addr.dev_addr.net; | |
3153 | ||
3154 | id_priv->afonly = net->ipv6.sysctl.bindv6only; | |
3155 | } | |
5b0ec991 | 3156 | #endif |
68602120 | 3157 | } |
e51060f0 SH |
3158 | ret = cma_get_port(id_priv); |
3159 | if (ret) | |
255d0c14 | 3160 | goto err2; |
e51060f0 SH |
3161 | |
3162 | return 0; | |
255d0c14 | 3163 | err2: |
a396d43a SH |
3164 | if (id_priv->cma_dev) |
3165 | cma_release_dev(id_priv); | |
255d0c14 | 3166 | err1: |
550e5ca7 | 3167 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
3168 | return ret; |
3169 | } | |
3170 | EXPORT_SYMBOL(rdma_bind_addr); | |
3171 | ||
f4753834 | 3172 | static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv) |
e51060f0 | 3173 | { |
e51060f0 | 3174 | struct cma_hdr *cma_hdr; |
e51060f0 | 3175 | |
01602f11 SH |
3176 | cma_hdr = hdr; |
3177 | cma_hdr->cma_version = CMA_VERSION; | |
f4753834 | 3178 | if (cma_family(id_priv) == AF_INET) { |
1f5175ad AS |
3179 | struct sockaddr_in *src4, *dst4; |
3180 | ||
f4753834 SH |
3181 | src4 = (struct sockaddr_in *) cma_src_addr(id_priv); |
3182 | dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv); | |
1f5175ad | 3183 | |
01602f11 SH |
3184 | cma_set_ip_ver(cma_hdr, 4); |
3185 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
3186 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
3187 | cma_hdr->port = src4->sin_port; | |
e8160e15 | 3188 | } else if (cma_family(id_priv) == AF_INET6) { |
1f5175ad AS |
3189 | struct sockaddr_in6 *src6, *dst6; |
3190 | ||
f4753834 SH |
3191 | src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
3192 | dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv); | |
1f5175ad | 3193 | |
01602f11 SH |
3194 | cma_set_ip_ver(cma_hdr, 6); |
3195 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
3196 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
3197 | cma_hdr->port = src6->sin6_port; | |
e51060f0 SH |
3198 | } |
3199 | return 0; | |
3200 | } | |
3201 | ||
628e5f6d SH |
3202 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
3203 | struct ib_cm_event *ib_event) | |
3204 | { | |
3205 | struct rdma_id_private *id_priv = cm_id->context; | |
3206 | struct rdma_cm_event event; | |
3207 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
3208 | int ret = 0; | |
3209 | ||
550e5ca7 | 3210 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
8aa08602 | 3211 | return 0; |
628e5f6d | 3212 | |
8aa08602 | 3213 | memset(&event, 0, sizeof event); |
628e5f6d SH |
3214 | switch (ib_event->event) { |
3215 | case IB_CM_SIDR_REQ_ERROR: | |
3216 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3217 | event.status = -ETIMEDOUT; | |
3218 | break; | |
3219 | case IB_CM_SIDR_REP_RECEIVED: | |
3220 | event.param.ud.private_data = ib_event->private_data; | |
3221 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
3222 | if (rep->status != IB_SIDR_SUCCESS) { | |
3223 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3224 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
3225 | break; | |
3226 | } | |
5c438135 | 3227 | ret = cma_set_qkey(id_priv, rep->qkey); |
d2ca39f2 YE |
3228 | if (ret) { |
3229 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
5c438135 | 3230 | event.status = ret; |
628e5f6d SH |
3231 | break; |
3232 | } | |
3233 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
3234 | id_priv->id.route.path_rec, | |
3235 | &event.param.ud.ah_attr); | |
3236 | event.param.ud.qp_num = rep->qpn; | |
3237 | event.param.ud.qkey = rep->qkey; | |
3238 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
3239 | event.status = 0; | |
3240 | break; | |
3241 | default: | |
468f2239 | 3242 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
3243 | ib_event->event); |
3244 | goto out; | |
3245 | } | |
3246 | ||
3247 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3248 | if (ret) { | |
3249 | /* Destroy the CM ID by returning a non-zero value. */ | |
3250 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 3251 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3252 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3253 | rdma_destroy_id(&id_priv->id); |
3254 | return ret; | |
3255 | } | |
3256 | out: | |
de910bd9 | 3257 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3258 | return ret; |
3259 | } | |
3260 | ||
3261 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
3262 | struct rdma_conn_param *conn_param) | |
3263 | { | |
3264 | struct ib_cm_sidr_req_param req; | |
0c9361fc | 3265 | struct ib_cm_id *id; |
e511d1ae | 3266 | void *private_data; |
e8160e15 | 3267 | int offset, ret; |
628e5f6d | 3268 | |
e511d1ae | 3269 | memset(&req, 0, sizeof req); |
e8160e15 SH |
3270 | offset = cma_user_data_offset(id_priv); |
3271 | req.private_data_len = offset + conn_param->private_data_len; | |
04ded167 SH |
3272 | if (req.private_data_len < conn_param->private_data_len) |
3273 | return -EINVAL; | |
3274 | ||
e8160e15 | 3275 | if (req.private_data_len) { |
e511d1ae SH |
3276 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
3277 | if (!private_data) | |
e8160e15 SH |
3278 | return -ENOMEM; |
3279 | } else { | |
e511d1ae | 3280 | private_data = NULL; |
e8160e15 | 3281 | } |
628e5f6d SH |
3282 | |
3283 | if (conn_param->private_data && conn_param->private_data_len) | |
e511d1ae SH |
3284 | memcpy(private_data + offset, conn_param->private_data, |
3285 | conn_param->private_data_len); | |
628e5f6d | 3286 | |
e511d1ae SH |
3287 | if (private_data) { |
3288 | ret = cma_format_hdr(private_data, id_priv); | |
e8160e15 SH |
3289 | if (ret) |
3290 | goto out; | |
e511d1ae | 3291 | req.private_data = private_data; |
e8160e15 | 3292 | } |
628e5f6d | 3293 | |
0c9361fc JM |
3294 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
3295 | id_priv); | |
3296 | if (IS_ERR(id)) { | |
3297 | ret = PTR_ERR(id); | |
628e5f6d SH |
3298 | goto out; |
3299 | } | |
0c9361fc | 3300 | id_priv->cm_id.ib = id; |
628e5f6d | 3301 | |
f4753834 | 3302 | req.path = id_priv->id.route.path_rec; |
cf53936f | 3303 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
628e5f6d SH |
3304 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
3305 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3306 | ||
3307 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
3308 | if (ret) { | |
3309 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
3310 | id_priv->cm_id.ib = NULL; | |
3311 | } | |
3312 | out: | |
e511d1ae | 3313 | kfree(private_data); |
628e5f6d SH |
3314 | return ret; |
3315 | } | |
3316 | ||
e51060f0 SH |
3317 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
3318 | struct rdma_conn_param *conn_param) | |
3319 | { | |
3320 | struct ib_cm_req_param req; | |
3321 | struct rdma_route *route; | |
3322 | void *private_data; | |
0c9361fc | 3323 | struct ib_cm_id *id; |
e51060f0 SH |
3324 | int offset, ret; |
3325 | ||
3326 | memset(&req, 0, sizeof req); | |
e8160e15 | 3327 | offset = cma_user_data_offset(id_priv); |
e51060f0 | 3328 | req.private_data_len = offset + conn_param->private_data_len; |
04ded167 SH |
3329 | if (req.private_data_len < conn_param->private_data_len) |
3330 | return -EINVAL; | |
3331 | ||
e8160e15 SH |
3332 | if (req.private_data_len) { |
3333 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
3334 | if (!private_data) | |
3335 | return -ENOMEM; | |
3336 | } else { | |
3337 | private_data = NULL; | |
3338 | } | |
e51060f0 SH |
3339 | |
3340 | if (conn_param->private_data && conn_param->private_data_len) | |
3341 | memcpy(private_data + offset, conn_param->private_data, | |
3342 | conn_param->private_data_len); | |
3343 | ||
0c9361fc JM |
3344 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
3345 | if (IS_ERR(id)) { | |
3346 | ret = PTR_ERR(id); | |
e51060f0 SH |
3347 | goto out; |
3348 | } | |
0c9361fc | 3349 | id_priv->cm_id.ib = id; |
e51060f0 SH |
3350 | |
3351 | route = &id_priv->id.route; | |
e8160e15 SH |
3352 | if (private_data) { |
3353 | ret = cma_format_hdr(private_data, id_priv); | |
3354 | if (ret) | |
3355 | goto out; | |
3356 | req.private_data = private_data; | |
3357 | } | |
e51060f0 SH |
3358 | |
3359 | req.primary_path = &route->path_rec[0]; | |
3360 | if (route->num_paths == 2) | |
3361 | req.alternate_path = &route->path_rec[1]; | |
3362 | ||
cf53936f | 3363 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
e51060f0 | 3364 | req.qp_num = id_priv->qp_num; |
18c441a6 | 3365 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
3366 | req.starting_psn = id_priv->seq_num; |
3367 | req.responder_resources = conn_param->responder_resources; | |
3368 | req.initiator_depth = conn_param->initiator_depth; | |
3369 | req.flow_control = conn_param->flow_control; | |
4ede178a SH |
3370 | req.retry_count = min_t(u8, 7, conn_param->retry_count); |
3371 | req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); | |
e51060f0 SH |
3372 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; |
3373 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
3374 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3375 | req.srq = id_priv->srq ? 1 : 0; | |
3376 | ||
3377 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
3378 | out: | |
0c9361fc JM |
3379 | if (ret && !IS_ERR(id)) { |
3380 | ib_destroy_cm_id(id); | |
675a027c KK |
3381 | id_priv->cm_id.ib = NULL; |
3382 | } | |
3383 | ||
e51060f0 SH |
3384 | kfree(private_data); |
3385 | return ret; | |
3386 | } | |
3387 | ||
07ebafba TT |
3388 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
3389 | struct rdma_conn_param *conn_param) | |
3390 | { | |
3391 | struct iw_cm_id *cm_id; | |
07ebafba TT |
3392 | int ret; |
3393 | struct iw_cm_conn_param iw_param; | |
3394 | ||
3395 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
3396 | if (IS_ERR(cm_id)) |
3397 | return PTR_ERR(cm_id); | |
07ebafba | 3398 | |
68cdba06 | 3399 | cm_id->tos = id_priv->tos; |
07ebafba TT |
3400 | id_priv->cm_id.iw = cm_id; |
3401 | ||
24d44a39 SW |
3402 | memcpy(&cm_id->local_addr, cma_src_addr(id_priv), |
3403 | rdma_addr_size(cma_src_addr(id_priv))); | |
3404 | memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv), | |
3405 | rdma_addr_size(cma_dst_addr(id_priv))); | |
07ebafba | 3406 | |
5851bb89 | 3407 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
3408 | if (ret) |
3409 | goto out; | |
07ebafba | 3410 | |
f45ee80e HS |
3411 | if (conn_param) { |
3412 | iw_param.ord = conn_param->initiator_depth; | |
3413 | iw_param.ird = conn_param->responder_resources; | |
3414 | iw_param.private_data = conn_param->private_data; | |
3415 | iw_param.private_data_len = conn_param->private_data_len; | |
3416 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
3417 | } else { | |
3418 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 3419 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 3420 | } |
07ebafba TT |
3421 | ret = iw_cm_connect(cm_id, &iw_param); |
3422 | out: | |
0c9361fc | 3423 | if (ret) { |
675a027c KK |
3424 | iw_destroy_cm_id(cm_id); |
3425 | id_priv->cm_id.iw = NULL; | |
3426 | } | |
07ebafba TT |
3427 | return ret; |
3428 | } | |
3429 | ||
e51060f0 SH |
3430 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3431 | { | |
3432 | struct rdma_id_private *id_priv; | |
3433 | int ret; | |
3434 | ||
3435 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3436 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
3437 | return -EINVAL; |
3438 | ||
3439 | if (!id->qp) { | |
3440 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3441 | id_priv->srq = conn_param->srq; |
3442 | } | |
3443 | ||
72219cea | 3444 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3445 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
3446 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
3447 | else | |
3448 | ret = cma_connect_ib(id_priv, conn_param); | |
04215330 | 3449 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3450 | ret = cma_connect_iw(id_priv, conn_param); |
21655afc | 3451 | else |
e51060f0 | 3452 | ret = -ENOSYS; |
e51060f0 SH |
3453 | if (ret) |
3454 | goto err; | |
3455 | ||
3456 | return 0; | |
3457 | err: | |
550e5ca7 | 3458 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
3459 | return ret; |
3460 | } | |
3461 | EXPORT_SYMBOL(rdma_connect); | |
3462 | ||
3463 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
3464 | struct rdma_conn_param *conn_param) | |
3465 | { | |
3466 | struct ib_cm_rep_param rep; | |
5851bb89 | 3467 | int ret; |
0fe313b0 | 3468 | |
5851bb89 SH |
3469 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
3470 | if (ret) | |
3471 | goto out; | |
0fe313b0 | 3472 | |
5851bb89 SH |
3473 | ret = cma_modify_qp_rts(id_priv, conn_param); |
3474 | if (ret) | |
3475 | goto out; | |
e51060f0 SH |
3476 | |
3477 | memset(&rep, 0, sizeof rep); | |
3478 | rep.qp_num = id_priv->qp_num; | |
3479 | rep.starting_psn = id_priv->seq_num; | |
3480 | rep.private_data = conn_param->private_data; | |
3481 | rep.private_data_len = conn_param->private_data_len; | |
3482 | rep.responder_resources = conn_param->responder_resources; | |
3483 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
3484 | rep.failover_accepted = 0; |
3485 | rep.flow_control = conn_param->flow_control; | |
4ede178a | 3486 | rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); |
e51060f0 SH |
3487 | rep.srq = id_priv->srq ? 1 : 0; |
3488 | ||
0fe313b0 SH |
3489 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
3490 | out: | |
3491 | return ret; | |
e51060f0 SH |
3492 | } |
3493 | ||
07ebafba TT |
3494 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
3495 | struct rdma_conn_param *conn_param) | |
3496 | { | |
3497 | struct iw_cm_conn_param iw_param; | |
3498 | int ret; | |
3499 | ||
5851bb89 | 3500 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
3501 | if (ret) |
3502 | return ret; | |
3503 | ||
3504 | iw_param.ord = conn_param->initiator_depth; | |
3505 | iw_param.ird = conn_param->responder_resources; | |
3506 | iw_param.private_data = conn_param->private_data; | |
3507 | iw_param.private_data_len = conn_param->private_data_len; | |
3508 | if (id_priv->id.qp) { | |
3509 | iw_param.qpn = id_priv->qp_num; | |
3510 | } else | |
3511 | iw_param.qpn = conn_param->qp_num; | |
3512 | ||
3513 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
3514 | } | |
3515 | ||
628e5f6d | 3516 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
5c438135 | 3517 | enum ib_cm_sidr_status status, u32 qkey, |
628e5f6d SH |
3518 | const void *private_data, int private_data_len) |
3519 | { | |
3520 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 3521 | int ret; |
628e5f6d SH |
3522 | |
3523 | memset(&rep, 0, sizeof rep); | |
3524 | rep.status = status; | |
3525 | if (status == IB_SIDR_SUCCESS) { | |
5c438135 | 3526 | ret = cma_set_qkey(id_priv, qkey); |
d2ca39f2 YE |
3527 | if (ret) |
3528 | return ret; | |
628e5f6d | 3529 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 3530 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
3531 | } |
3532 | rep.private_data = private_data; | |
3533 | rep.private_data_len = private_data_len; | |
3534 | ||
3535 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
3536 | } | |
3537 | ||
e51060f0 SH |
3538 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3539 | { | |
3540 | struct rdma_id_private *id_priv; | |
3541 | int ret; | |
3542 | ||
3543 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d NM |
3544 | |
3545 | id_priv->owner = task_pid_nr(current); | |
3546 | ||
550e5ca7 | 3547 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
3548 | return -EINVAL; |
3549 | ||
3550 | if (!id->qp && conn_param) { | |
3551 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3552 | id_priv->srq = conn_param->srq; |
3553 | } | |
3554 | ||
72219cea | 3555 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
f45ee80e HS |
3556 | if (id->qp_type == IB_QPT_UD) { |
3557 | if (conn_param) | |
3558 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 3559 | conn_param->qkey, |
f45ee80e HS |
3560 | conn_param->private_data, |
3561 | conn_param->private_data_len); | |
3562 | else | |
3563 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 3564 | 0, NULL, 0); |
f45ee80e HS |
3565 | } else { |
3566 | if (conn_param) | |
3567 | ret = cma_accept_ib(id_priv, conn_param); | |
3568 | else | |
3569 | ret = cma_rep_recv(id_priv); | |
3570 | } | |
04215330 | 3571 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3572 | ret = cma_accept_iw(id_priv, conn_param); |
21655afc | 3573 | else |
e51060f0 | 3574 | ret = -ENOSYS; |
e51060f0 SH |
3575 | |
3576 | if (ret) | |
3577 | goto reject; | |
3578 | ||
3579 | return 0; | |
3580 | reject: | |
c5483388 | 3581 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
3582 | rdma_reject(id, NULL, 0); |
3583 | return ret; | |
3584 | } | |
3585 | EXPORT_SYMBOL(rdma_accept); | |
3586 | ||
0fe313b0 SH |
3587 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
3588 | { | |
3589 | struct rdma_id_private *id_priv; | |
3590 | int ret; | |
3591 | ||
3592 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3593 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
3594 | return -EINVAL; |
3595 | ||
3596 | switch (id->device->node_type) { | |
3597 | case RDMA_NODE_IB_CA: | |
3598 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
3599 | break; | |
3600 | default: | |
3601 | ret = 0; | |
3602 | break; | |
3603 | } | |
3604 | return ret; | |
3605 | } | |
3606 | EXPORT_SYMBOL(rdma_notify); | |
3607 | ||
e51060f0 SH |
3608 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
3609 | u8 private_data_len) | |
3610 | { | |
3611 | struct rdma_id_private *id_priv; | |
3612 | int ret; | |
3613 | ||
3614 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3615 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3616 | return -EINVAL; |
3617 | ||
72219cea | 3618 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3619 | if (id->qp_type == IB_QPT_UD) |
5c438135 | 3620 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0, |
628e5f6d SH |
3621 | private_data, private_data_len); |
3622 | else | |
3623 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
3624 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
3625 | 0, private_data, private_data_len); | |
04215330 | 3626 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba TT |
3627 | ret = iw_cm_reject(id_priv->cm_id.iw, |
3628 | private_data, private_data_len); | |
21655afc | 3629 | } else |
e51060f0 | 3630 | ret = -ENOSYS; |
21655afc | 3631 | |
e51060f0 SH |
3632 | return ret; |
3633 | } | |
3634 | EXPORT_SYMBOL(rdma_reject); | |
3635 | ||
3636 | int rdma_disconnect(struct rdma_cm_id *id) | |
3637 | { | |
3638 | struct rdma_id_private *id_priv; | |
3639 | int ret; | |
3640 | ||
3641 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3642 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3643 | return -EINVAL; |
3644 | ||
72219cea | 3645 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
c5483388 | 3646 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
3647 | if (ret) |
3648 | goto out; | |
e51060f0 SH |
3649 | /* Initiate or respond to a disconnect. */ |
3650 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
3651 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
04215330 | 3652 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba | 3653 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); |
21655afc | 3654 | } else |
07ebafba | 3655 | ret = -EINVAL; |
21655afc | 3656 | |
e51060f0 SH |
3657 | out: |
3658 | return ret; | |
3659 | } | |
3660 | EXPORT_SYMBOL(rdma_disconnect); | |
3661 | ||
c8f6a362 SH |
3662 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
3663 | { | |
3664 | struct rdma_id_private *id_priv; | |
3665 | struct cma_multicast *mc = multicast->context; | |
3666 | struct rdma_cm_event event; | |
3667 | int ret; | |
3668 | ||
3669 | id_priv = mc->id_priv; | |
550e5ca7 NM |
3670 | if (cma_disable_callback(id_priv, RDMA_CM_ADDR_BOUND) && |
3671 | cma_disable_callback(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
8aa08602 | 3672 | return 0; |
c8f6a362 | 3673 | |
5c438135 SH |
3674 | if (!status) |
3675 | status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey)); | |
c5483388 | 3676 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
3677 | if (!status && id_priv->id.qp) |
3678 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
46ea5061 | 3679 | be16_to_cpu(multicast->rec.mlid)); |
c5483388 | 3680 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
3681 | |
3682 | memset(&event, 0, sizeof event); | |
3683 | event.status = status; | |
3684 | event.param.ud.private_data = mc->context; | |
3685 | if (!status) { | |
bee3c3c9 MS |
3686 | struct rdma_dev_addr *dev_addr = |
3687 | &id_priv->id.route.addr.dev_addr; | |
3688 | struct net_device *ndev = | |
3689 | dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3690 | enum ib_gid_type gid_type = | |
3691 | id_priv->cma_dev->default_gid_type[id_priv->id.port_num - | |
3692 | rdma_start_port(id_priv->cma_dev->device)]; | |
3693 | ||
c8f6a362 SH |
3694 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; |
3695 | ib_init_ah_from_mcmember(id_priv->id.device, | |
3696 | id_priv->id.port_num, &multicast->rec, | |
bee3c3c9 | 3697 | ndev, gid_type, |
c8f6a362 SH |
3698 | &event.param.ud.ah_attr); |
3699 | event.param.ud.qp_num = 0xFFFFFF; | |
3700 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
bee3c3c9 MS |
3701 | if (ndev) |
3702 | dev_put(ndev); | |
c8f6a362 SH |
3703 | } else |
3704 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
3705 | ||
3706 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3707 | if (ret) { | |
550e5ca7 | 3708 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3709 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3710 | rdma_destroy_id(&id_priv->id); |
3711 | return 0; | |
3712 | } | |
8aa08602 | 3713 | |
de910bd9 | 3714 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3715 | return 0; |
3716 | } | |
3717 | ||
3718 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
3719 | struct sockaddr *addr, union ib_gid *mgid) | |
3720 | { | |
3721 | unsigned char mc_map[MAX_ADDR_LEN]; | |
3722 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3723 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
3724 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
3725 | ||
3726 | if (cma_any_addr(addr)) { | |
3727 | memset(mgid, 0, sizeof *mgid); | |
3728 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 3729 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
3730 | 0xFF10A01B)) { |
3731 | /* IPv6 address is an SA assigned MGID. */ | |
3732 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
5bc2b7b3 SH |
3733 | } else if (addr->sa_family == AF_IB) { |
3734 | memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid); | |
e2e62697 JG |
3735 | } else if ((addr->sa_family == AF_INET6)) { |
3736 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
3737 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3738 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
3739 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 3740 | } else { |
a9e527e3 | 3741 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
3742 | if (id_priv->id.ps == RDMA_PS_UDP) |
3743 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
3744 | *mgid = *(union ib_gid *) (mc_map + 4); |
3745 | } | |
3746 | } | |
3747 | ||
3748 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
3749 | struct cma_multicast *mc) | |
3750 | { | |
3751 | struct ib_sa_mcmember_rec rec; | |
3752 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3753 | ib_sa_comp_mask comp_mask; | |
3754 | int ret; | |
3755 | ||
3756 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
3757 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
3758 | &rec.mgid, &rec); | |
3759 | if (ret) | |
3760 | return ret; | |
3761 | ||
5bc2b7b3 SH |
3762 | ret = cma_set_qkey(id_priv, 0); |
3763 | if (ret) | |
3764 | return ret; | |
3765 | ||
3f446754 | 3766 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
5bc2b7b3 | 3767 | rec.qkey = cpu_to_be32(id_priv->qkey); |
6f8372b6 | 3768 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 SH |
3769 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
3770 | rec.join_state = 1; | |
3771 | ||
3772 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
3773 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
3774 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
3775 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
3776 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
3777 | ||
84adeee9 YE |
3778 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
3779 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2a22fb8c DB |
3780 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
3781 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
3782 | IB_SA_MCMEMBER_REC_MTU | | |
3783 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
84adeee9 | 3784 | |
c8f6a362 SH |
3785 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
3786 | id_priv->id.port_num, &rec, | |
3787 | comp_mask, GFP_KERNEL, | |
3788 | cma_ib_mc_handler, mc); | |
8c6ffba0 | 3789 | return PTR_ERR_OR_ZERO(mc->multicast.ib); |
c8f6a362 SH |
3790 | } |
3791 | ||
3c86aa70 EC |
3792 | static void iboe_mcast_work_handler(struct work_struct *work) |
3793 | { | |
3794 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
3795 | struct cma_multicast *mc = mw->mc; | |
3796 | struct ib_sa_multicast *m = mc->multicast.ib; | |
3797 | ||
3798 | mc->multicast.ib->context = mc; | |
3799 | cma_ib_mc_handler(0, m); | |
3800 | kref_put(&mc->mcref, release_mc); | |
3801 | kfree(mw); | |
3802 | } | |
3803 | ||
3804 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) | |
3805 | { | |
3806 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
3807 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
3808 | ||
3809 | if (cma_any_addr(addr)) { | |
3810 | memset(mgid, 0, sizeof *mgid); | |
3811 | } else if (addr->sa_family == AF_INET6) { | |
3812 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
3813 | } else { | |
3814 | mgid->raw[0] = 0xff; | |
3815 | mgid->raw[1] = 0x0e; | |
3816 | mgid->raw[2] = 0; | |
3817 | mgid->raw[3] = 0; | |
3818 | mgid->raw[4] = 0; | |
3819 | mgid->raw[5] = 0; | |
3820 | mgid->raw[6] = 0; | |
3821 | mgid->raw[7] = 0; | |
3822 | mgid->raw[8] = 0; | |
3823 | mgid->raw[9] = 0; | |
3824 | mgid->raw[10] = 0xff; | |
3825 | mgid->raw[11] = 0xff; | |
3826 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
3827 | } | |
3828 | } | |
3829 | ||
3830 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
3831 | struct cma_multicast *mc) | |
3832 | { | |
3833 | struct iboe_mcast_work *work; | |
3834 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
bee3c3c9 | 3835 | int err = 0; |
3c86aa70 EC |
3836 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; |
3837 | struct net_device *ndev = NULL; | |
bee3c3c9 | 3838 | enum ib_gid_type gid_type; |
3c86aa70 EC |
3839 | |
3840 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
3841 | return -EINVAL; | |
3842 | ||
3843 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3844 | if (!work) | |
3845 | return -ENOMEM; | |
3846 | ||
3847 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
3848 | if (!mc->multicast.ib) { | |
3849 | err = -ENOMEM; | |
3850 | goto out1; | |
3851 | } | |
3852 | ||
3853 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); | |
3854 | ||
3855 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
3856 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3857 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
3858 | ||
3859 | if (dev_addr->bound_dev_if) | |
3860 | ndev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3861 | if (!ndev) { | |
3862 | err = -ENODEV; | |
3863 | goto out2; | |
3864 | } | |
3865 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
3866 | mc->multicast.ib->rec.hop_limit = 1; | |
3867 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
bee3c3c9 MS |
3868 | |
3869 | gid_type = id_priv->cma_dev->default_gid_type[id_priv->id.port_num - | |
3870 | rdma_start_port(id_priv->cma_dev->device)]; | |
3871 | if (addr->sa_family == AF_INET) { | |
3872 | if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) | |
3873 | err = cma_igmp_send(ndev, &mc->multicast.ib->rec.mgid, | |
3874 | true); | |
3875 | if (!err) { | |
3876 | mc->igmp_joined = true; | |
3877 | mc->multicast.ib->rec.hop_limit = IPV6_DEFAULT_HOPLIMIT; | |
3878 | } | |
3879 | } else { | |
3880 | if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) | |
3881 | err = -ENOTSUPP; | |
3882 | } | |
3c86aa70 | 3883 | dev_put(ndev); |
bee3c3c9 MS |
3884 | if (err || !mc->multicast.ib->rec.mtu) { |
3885 | if (!err) | |
3886 | err = -EINVAL; | |
3c86aa70 EC |
3887 | goto out2; |
3888 | } | |
7b85627b MS |
3889 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
3890 | &mc->multicast.ib->rec.port_gid); | |
3c86aa70 EC |
3891 | work->id = id_priv; |
3892 | work->mc = mc; | |
3893 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
3894 | kref_get(&mc->mcref); | |
3895 | queue_work(cma_wq, &work->work); | |
3896 | ||
3897 | return 0; | |
3898 | ||
3899 | out2: | |
3900 | kfree(mc->multicast.ib); | |
3901 | out1: | |
3902 | kfree(work); | |
3903 | return err; | |
3904 | } | |
3905 | ||
c8f6a362 SH |
3906 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
3907 | void *context) | |
3908 | { | |
3909 | struct rdma_id_private *id_priv; | |
3910 | struct cma_multicast *mc; | |
3911 | int ret; | |
3912 | ||
3913 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
3914 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
3915 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
3916 | return -EINVAL; |
3917 | ||
3918 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
3919 | if (!mc) | |
3920 | return -ENOMEM; | |
3921 | ||
ef560861 | 3922 | memcpy(&mc->addr, addr, rdma_addr_size(addr)); |
c8f6a362 SH |
3923 | mc->context = context; |
3924 | mc->id_priv = id_priv; | |
bee3c3c9 | 3925 | mc->igmp_joined = false; |
c8f6a362 SH |
3926 | spin_lock(&id_priv->lock); |
3927 | list_add(&mc->list, &id_priv->mc_list); | |
3928 | spin_unlock(&id_priv->lock); | |
3929 | ||
5d9fb044 | 3930 | if (rdma_protocol_roce(id->device, id->port_num)) { |
5c9a5282 MW |
3931 | kref_init(&mc->mcref); |
3932 | ret = cma_iboe_join_multicast(id_priv, mc); | |
a31ad3b0 | 3933 | } else if (rdma_cap_ib_mcast(id->device, id->port_num)) |
5c9a5282 MW |
3934 | ret = cma_join_ib_multicast(id_priv, mc); |
3935 | else | |
c8f6a362 | 3936 | ret = -ENOSYS; |
c8f6a362 SH |
3937 | |
3938 | if (ret) { | |
3939 | spin_lock_irq(&id_priv->lock); | |
3940 | list_del(&mc->list); | |
3941 | spin_unlock_irq(&id_priv->lock); | |
3942 | kfree(mc); | |
3943 | } | |
3944 | return ret; | |
3945 | } | |
3946 | EXPORT_SYMBOL(rdma_join_multicast); | |
3947 | ||
3948 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
3949 | { | |
3950 | struct rdma_id_private *id_priv; | |
3951 | struct cma_multicast *mc; | |
3952 | ||
3953 | id_priv = container_of(id, struct rdma_id_private, id); | |
3954 | spin_lock_irq(&id_priv->lock); | |
3955 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
ef560861 | 3956 | if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) { |
c8f6a362 SH |
3957 | list_del(&mc->list); |
3958 | spin_unlock_irq(&id_priv->lock); | |
3959 | ||
3960 | if (id->qp) | |
3961 | ib_detach_mcast(id->qp, | |
3962 | &mc->multicast.ib->rec.mgid, | |
46ea5061 | 3963 | be16_to_cpu(mc->multicast.ib->rec.mlid)); |
5c9a5282 MW |
3964 | |
3965 | BUG_ON(id_priv->cma_dev->device != id->device); | |
3966 | ||
a31ad3b0 | 3967 | if (rdma_cap_ib_mcast(id->device, id->port_num)) { |
5c9a5282 MW |
3968 | ib_sa_free_multicast(mc->multicast.ib); |
3969 | kfree(mc); | |
bee3c3c9 MS |
3970 | } else if (rdma_protocol_roce(id->device, id->port_num)) { |
3971 | if (mc->igmp_joined) { | |
3972 | struct rdma_dev_addr *dev_addr = | |
3973 | &id->route.addr.dev_addr; | |
3974 | struct net_device *ndev = NULL; | |
3975 | ||
3976 | if (dev_addr->bound_dev_if) | |
3977 | ndev = dev_get_by_index(&init_net, | |
3978 | dev_addr->bound_dev_if); | |
3979 | if (ndev) { | |
3980 | cma_igmp_send(ndev, | |
3981 | &mc->multicast.ib->rec.mgid, | |
3982 | false); | |
3983 | dev_put(ndev); | |
3984 | } | |
3985 | mc->igmp_joined = false; | |
3986 | } | |
5c9a5282 | 3987 | kref_put(&mc->mcref, release_mc); |
bee3c3c9 | 3988 | } |
c8f6a362 SH |
3989 | return; |
3990 | } | |
3991 | } | |
3992 | spin_unlock_irq(&id_priv->lock); | |
3993 | } | |
3994 | EXPORT_SYMBOL(rdma_leave_multicast); | |
3995 | ||
dd5bdff8 OG |
3996 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
3997 | { | |
3998 | struct rdma_dev_addr *dev_addr; | |
3999 | struct cma_ndev_work *work; | |
4000 | ||
4001 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
4002 | ||
6266ed6e | 4003 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
fa20105e | 4004 | (net_eq(dev_net(ndev), dev_addr->net)) && |
dd5bdff8 OG |
4005 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
4006 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
4007 | ndev->name, &id_priv->id); | |
4008 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
4009 | if (!work) | |
4010 | return -ENOMEM; | |
4011 | ||
4012 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
4013 | work->id = id_priv; | |
4014 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
4015 | atomic_inc(&id_priv->refcount); | |
4016 | queue_work(cma_wq, &work->work); | |
4017 | } | |
4018 | ||
4019 | return 0; | |
4020 | } | |
4021 | ||
4022 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
351638e7 | 4023 | void *ptr) |
dd5bdff8 | 4024 | { |
351638e7 | 4025 | struct net_device *ndev = netdev_notifier_info_to_dev(ptr); |
dd5bdff8 OG |
4026 | struct cma_device *cma_dev; |
4027 | struct rdma_id_private *id_priv; | |
4028 | int ret = NOTIFY_DONE; | |
4029 | ||
dd5bdff8 OG |
4030 | if (event != NETDEV_BONDING_FAILOVER) |
4031 | return NOTIFY_DONE; | |
4032 | ||
4033 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
4034 | return NOTIFY_DONE; | |
4035 | ||
4036 | mutex_lock(&lock); | |
4037 | list_for_each_entry(cma_dev, &dev_list, list) | |
4038 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
4039 | ret = cma_netdev_change(ndev, id_priv); | |
4040 | if (ret) | |
4041 | goto out; | |
4042 | } | |
4043 | ||
4044 | out: | |
4045 | mutex_unlock(&lock); | |
4046 | return ret; | |
4047 | } | |
4048 | ||
4049 | static struct notifier_block cma_nb = { | |
4050 | .notifier_call = cma_netdev_callback | |
4051 | }; | |
4052 | ||
e51060f0 SH |
4053 | static void cma_add_one(struct ib_device *device) |
4054 | { | |
4055 | struct cma_device *cma_dev; | |
4056 | struct rdma_id_private *id_priv; | |
045959db MB |
4057 | unsigned int i; |
4058 | unsigned long supported_gids = 0; | |
e51060f0 SH |
4059 | |
4060 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
4061 | if (!cma_dev) | |
4062 | return; | |
4063 | ||
4064 | cma_dev->device = device; | |
045959db MB |
4065 | cma_dev->default_gid_type = kcalloc(device->phys_port_cnt, |
4066 | sizeof(*cma_dev->default_gid_type), | |
4067 | GFP_KERNEL); | |
4068 | if (!cma_dev->default_gid_type) { | |
4069 | kfree(cma_dev); | |
4070 | return; | |
4071 | } | |
4072 | for (i = rdma_start_port(device); i <= rdma_end_port(device); i++) { | |
4073 | supported_gids = roce_gid_type_mask_support(device, i); | |
4074 | WARN_ON(!supported_gids); | |
4075 | cma_dev->default_gid_type[i - rdma_start_port(device)] = | |
4076 | find_first_bit(&supported_gids, BITS_PER_LONG); | |
4077 | } | |
e51060f0 SH |
4078 | |
4079 | init_completion(&cma_dev->comp); | |
4080 | atomic_set(&cma_dev->refcount, 1); | |
4081 | INIT_LIST_HEAD(&cma_dev->id_list); | |
4082 | ib_set_client_data(device, &cma_client, cma_dev); | |
4083 | ||
4084 | mutex_lock(&lock); | |
4085 | list_add_tail(&cma_dev->list, &dev_list); | |
4086 | list_for_each_entry(id_priv, &listen_any_list, list) | |
4087 | cma_listen_on_dev(id_priv, cma_dev); | |
4088 | mutex_unlock(&lock); | |
e51060f0 SH |
4089 | } |
4090 | ||
4091 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
4092 | { | |
a1b1b61f | 4093 | struct rdma_cm_event event; |
550e5ca7 | 4094 | enum rdma_cm_state state; |
de910bd9 | 4095 | int ret = 0; |
e51060f0 SH |
4096 | |
4097 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
4098 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
4099 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
4100 | return 0; |
4101 | ||
4102 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 4103 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
4104 | |
4105 | /* Check for destruction from another callback. */ | |
550e5ca7 | 4106 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 4107 | goto out; |
e51060f0 | 4108 | |
a1b1b61f SH |
4109 | memset(&event, 0, sizeof event); |
4110 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
4111 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
4112 | out: | |
4113 | mutex_unlock(&id_priv->handler_mutex); | |
4114 | return ret; | |
e51060f0 SH |
4115 | } |
4116 | ||
4117 | static void cma_process_remove(struct cma_device *cma_dev) | |
4118 | { | |
e51060f0 SH |
4119 | struct rdma_id_private *id_priv; |
4120 | int ret; | |
4121 | ||
e51060f0 SH |
4122 | mutex_lock(&lock); |
4123 | while (!list_empty(&cma_dev->id_list)) { | |
4124 | id_priv = list_entry(cma_dev->id_list.next, | |
4125 | struct rdma_id_private, list); | |
4126 | ||
d02d1f53 | 4127 | list_del(&id_priv->listen_list); |
94de178a | 4128 | list_del_init(&id_priv->list); |
e51060f0 SH |
4129 | atomic_inc(&id_priv->refcount); |
4130 | mutex_unlock(&lock); | |
4131 | ||
d02d1f53 | 4132 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
4133 | cma_deref_id(id_priv); |
4134 | if (ret) | |
4135 | rdma_destroy_id(&id_priv->id); | |
4136 | ||
4137 | mutex_lock(&lock); | |
4138 | } | |
4139 | mutex_unlock(&lock); | |
4140 | ||
4141 | cma_deref_dev(cma_dev); | |
4142 | wait_for_completion(&cma_dev->comp); | |
4143 | } | |
4144 | ||
7c1eb45a | 4145 | static void cma_remove_one(struct ib_device *device, void *client_data) |
e51060f0 | 4146 | { |
7c1eb45a | 4147 | struct cma_device *cma_dev = client_data; |
e51060f0 | 4148 | |
e51060f0 SH |
4149 | if (!cma_dev) |
4150 | return; | |
4151 | ||
4152 | mutex_lock(&lock); | |
4153 | list_del(&cma_dev->list); | |
4154 | mutex_unlock(&lock); | |
4155 | ||
4156 | cma_process_remove(cma_dev); | |
045959db | 4157 | kfree(cma_dev->default_gid_type); |
e51060f0 SH |
4158 | kfree(cma_dev); |
4159 | } | |
4160 | ||
753f618a NM |
4161 | static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) |
4162 | { | |
4163 | struct nlmsghdr *nlh; | |
4164 | struct rdma_cm_id_stats *id_stats; | |
4165 | struct rdma_id_private *id_priv; | |
4166 | struct rdma_cm_id *id = NULL; | |
4167 | struct cma_device *cma_dev; | |
4168 | int i_dev = 0, i_id = 0; | |
4169 | ||
4170 | /* | |
4171 | * We export all of the IDs as a sequence of messages. Each | |
4172 | * ID gets its own netlink message. | |
4173 | */ | |
4174 | mutex_lock(&lock); | |
4175 | ||
4176 | list_for_each_entry(cma_dev, &dev_list, list) { | |
4177 | if (i_dev < cb->args[0]) { | |
4178 | i_dev++; | |
4179 | continue; | |
4180 | } | |
4181 | ||
4182 | i_id = 0; | |
4183 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
4184 | if (i_id < cb->args[1]) { | |
4185 | i_id++; | |
4186 | continue; | |
4187 | } | |
4188 | ||
4189 | id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, | |
4190 | sizeof *id_stats, RDMA_NL_RDMA_CM, | |
30dc5e63 TN |
4191 | RDMA_NL_RDMA_CM_ID_STATS, |
4192 | NLM_F_MULTI); | |
753f618a NM |
4193 | if (!id_stats) |
4194 | goto out; | |
4195 | ||
4196 | memset(id_stats, 0, sizeof *id_stats); | |
4197 | id = &id_priv->id; | |
4198 | id_stats->node_type = id->route.addr.dev_addr.dev_type; | |
4199 | id_stats->port_num = id->port_num; | |
4200 | id_stats->bound_dev_if = | |
4201 | id->route.addr.dev_addr.bound_dev_if; | |
4202 | ||
ce117ffa SH |
4203 | if (ibnl_put_attr(skb, nlh, |
4204 | rdma_addr_size(cma_src_addr(id_priv)), | |
4205 | cma_src_addr(id_priv), | |
4206 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) | |
4207 | goto out; | |
4208 | if (ibnl_put_attr(skb, nlh, | |
4209 | rdma_addr_size(cma_src_addr(id_priv)), | |
4210 | cma_dst_addr(id_priv), | |
4211 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) | |
4212 | goto out; | |
753f618a | 4213 | |
83e9502d | 4214 | id_stats->pid = id_priv->owner; |
753f618a NM |
4215 | id_stats->port_space = id->ps; |
4216 | id_stats->cm_state = id_priv->state; | |
4217 | id_stats->qp_num = id_priv->qp_num; | |
4218 | id_stats->qp_type = id->qp_type; | |
4219 | ||
4220 | i_id++; | |
4221 | } | |
4222 | ||
4223 | cb->args[1] = 0; | |
4224 | i_dev++; | |
4225 | } | |
4226 | ||
4227 | out: | |
4228 | mutex_unlock(&lock); | |
4229 | cb->args[0] = i_dev; | |
4230 | cb->args[1] = i_id; | |
4231 | ||
4232 | return skb->len; | |
4233 | } | |
4234 | ||
4235 | static const struct ibnl_client_cbs cma_cb_table[] = { | |
809d5fc9 G |
4236 | [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats, |
4237 | .module = THIS_MODULE }, | |
753f618a NM |
4238 | }; |
4239 | ||
4be74b42 HE |
4240 | static int cma_init_net(struct net *net) |
4241 | { | |
4242 | struct cma_pernet *pernet = cma_pernet(net); | |
4243 | ||
4244 | idr_init(&pernet->tcp_ps); | |
4245 | idr_init(&pernet->udp_ps); | |
4246 | idr_init(&pernet->ipoib_ps); | |
4247 | idr_init(&pernet->ib_ps); | |
4248 | ||
4249 | return 0; | |
4250 | } | |
4251 | ||
4252 | static void cma_exit_net(struct net *net) | |
4253 | { | |
4254 | struct cma_pernet *pernet = cma_pernet(net); | |
4255 | ||
4256 | idr_destroy(&pernet->tcp_ps); | |
4257 | idr_destroy(&pernet->udp_ps); | |
4258 | idr_destroy(&pernet->ipoib_ps); | |
4259 | idr_destroy(&pernet->ib_ps); | |
4260 | } | |
4261 | ||
4262 | static struct pernet_operations cma_pernet_operations = { | |
4263 | .init = cma_init_net, | |
4264 | .exit = cma_exit_net, | |
4265 | .id = &cma_pernet_id, | |
4266 | .size = sizeof(struct cma_pernet), | |
4267 | }; | |
4268 | ||
716abb1f | 4269 | static int __init cma_init(void) |
e51060f0 | 4270 | { |
5d7220e8 | 4271 | int ret; |
227b60f5 | 4272 | |
c7f743a6 | 4273 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
4274 | if (!cma_wq) |
4275 | return -ENOMEM; | |
4276 | ||
4be74b42 HE |
4277 | ret = register_pernet_subsys(&cma_pernet_operations); |
4278 | if (ret) | |
4279 | goto err_wq; | |
4280 | ||
c1a0b23b | 4281 | ib_sa_register_client(&sa_client); |
7a118df3 | 4282 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 4283 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 4284 | |
e51060f0 SH |
4285 | ret = ib_register_client(&cma_client); |
4286 | if (ret) | |
4287 | goto err; | |
753f618a NM |
4288 | |
4289 | if (ibnl_add_client(RDMA_NL_RDMA_CM, RDMA_NL_RDMA_CM_NUM_OPS, cma_cb_table)) | |
4290 | printk(KERN_WARNING "RDMA CMA: failed to add netlink callback\n"); | |
045959db | 4291 | cma_configfs_init(); |
753f618a | 4292 | |
e51060f0 SH |
4293 | return 0; |
4294 | ||
4295 | err: | |
dd5bdff8 | 4296 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 4297 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 4298 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4299 | err_wq: |
e51060f0 SH |
4300 | destroy_workqueue(cma_wq); |
4301 | return ret; | |
4302 | } | |
4303 | ||
716abb1f | 4304 | static void __exit cma_cleanup(void) |
e51060f0 | 4305 | { |
045959db | 4306 | cma_configfs_exit(); |
753f618a | 4307 | ibnl_remove_client(RDMA_NL_RDMA_CM); |
e51060f0 | 4308 | ib_unregister_client(&cma_client); |
dd5bdff8 | 4309 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 4310 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 4311 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4312 | unregister_pernet_subsys(&cma_pernet_operations); |
e51060f0 | 4313 | destroy_workqueue(cma_wq); |
e51060f0 SH |
4314 | } |
4315 | ||
4316 | module_init(cma_init); | |
4317 | module_exit(cma_cleanup); |