Commit | Line | Data |
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e51060f0 SH |
1 | /* |
2 | * Copyright (c) 2005 Voltaire Inc. All rights reserved. | |
3 | * Copyright (c) 2002-2005, Network Appliance, Inc. All rights reserved. | |
4 | * Copyright (c) 1999-2005, Mellanox Technologies, Inc. All rights reserved. | |
5 | * Copyright (c) 2005-2006 Intel Corporation. All rights reserved. | |
6 | * | |
a9474917 SH |
7 | * This software is available to you under a choice of one of two |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
e51060f0 | 12 | * |
a9474917 SH |
13 | * Redistribution and use in source and binary forms, with or |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
e51060f0 | 16 | * |
a9474917 SH |
17 | * - Redistributions of source code must retain the above |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
e51060f0 | 20 | * |
a9474917 SH |
21 | * - Redistributions in binary form must reproduce the above |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
e51060f0 | 25 | * |
a9474917 SH |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
e51060f0 SH |
34 | */ |
35 | ||
36 | #include <linux/completion.h> | |
37 | #include <linux/in.h> | |
38 | #include <linux/in6.h> | |
39 | #include <linux/mutex.h> | |
40 | #include <linux/random.h> | |
41 | #include <linux/idr.h> | |
07ebafba | 42 | #include <linux/inetdevice.h> |
5a0e3ad6 | 43 | #include <linux/slab.h> |
e4dd23d7 | 44 | #include <linux/module.h> |
366cddb4 | 45 | #include <net/route.h> |
e51060f0 | 46 | |
4be74b42 HE |
47 | #include <net/net_namespace.h> |
48 | #include <net/netns/generic.h> | |
e51060f0 | 49 | #include <net/tcp.h> |
1f5175ad | 50 | #include <net/ipv6.h> |
f887f2ac HE |
51 | #include <net/ip_fib.h> |
52 | #include <net/ip6_route.h> | |
e51060f0 SH |
53 | |
54 | #include <rdma/rdma_cm.h> | |
55 | #include <rdma/rdma_cm_ib.h> | |
753f618a | 56 | #include <rdma/rdma_netlink.h> |
2e2d190c | 57 | #include <rdma/ib.h> |
e51060f0 SH |
58 | #include <rdma/ib_cache.h> |
59 | #include <rdma/ib_cm.h> | |
60 | #include <rdma/ib_sa.h> | |
07ebafba | 61 | #include <rdma/iw_cm.h> |
e51060f0 SH |
62 | |
63 | MODULE_AUTHOR("Sean Hefty"); | |
64 | MODULE_DESCRIPTION("Generic RDMA CM Agent"); | |
65 | MODULE_LICENSE("Dual BSD/GPL"); | |
66 | ||
67 | #define CMA_CM_RESPONSE_TIMEOUT 20 | |
d5bb7599 | 68 | #define CMA_MAX_CM_RETRIES 15 |
dcb3f974 | 69 | #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24) |
3c86aa70 | 70 | #define CMA_IBOE_PACKET_LIFETIME 18 |
e51060f0 | 71 | |
2b1b5b60 SG |
72 | static const char * const cma_events[] = { |
73 | [RDMA_CM_EVENT_ADDR_RESOLVED] = "address resolved", | |
74 | [RDMA_CM_EVENT_ADDR_ERROR] = "address error", | |
75 | [RDMA_CM_EVENT_ROUTE_RESOLVED] = "route resolved ", | |
76 | [RDMA_CM_EVENT_ROUTE_ERROR] = "route error", | |
77 | [RDMA_CM_EVENT_CONNECT_REQUEST] = "connect request", | |
78 | [RDMA_CM_EVENT_CONNECT_RESPONSE] = "connect response", | |
79 | [RDMA_CM_EVENT_CONNECT_ERROR] = "connect error", | |
80 | [RDMA_CM_EVENT_UNREACHABLE] = "unreachable", | |
81 | [RDMA_CM_EVENT_REJECTED] = "rejected", | |
82 | [RDMA_CM_EVENT_ESTABLISHED] = "established", | |
83 | [RDMA_CM_EVENT_DISCONNECTED] = "disconnected", | |
84 | [RDMA_CM_EVENT_DEVICE_REMOVAL] = "device removal", | |
85 | [RDMA_CM_EVENT_MULTICAST_JOIN] = "multicast join", | |
86 | [RDMA_CM_EVENT_MULTICAST_ERROR] = "multicast error", | |
87 | [RDMA_CM_EVENT_ADDR_CHANGE] = "address change", | |
88 | [RDMA_CM_EVENT_TIMEWAIT_EXIT] = "timewait exit", | |
89 | }; | |
90 | ||
db7489e0 | 91 | const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event) |
2b1b5b60 SG |
92 | { |
93 | size_t index = event; | |
94 | ||
95 | return (index < ARRAY_SIZE(cma_events) && cma_events[index]) ? | |
96 | cma_events[index] : "unrecognized event"; | |
97 | } | |
98 | EXPORT_SYMBOL(rdma_event_msg); | |
99 | ||
e51060f0 | 100 | static void cma_add_one(struct ib_device *device); |
7c1eb45a | 101 | static void cma_remove_one(struct ib_device *device, void *client_data); |
e51060f0 SH |
102 | |
103 | static struct ib_client cma_client = { | |
104 | .name = "cma", | |
105 | .add = cma_add_one, | |
106 | .remove = cma_remove_one | |
107 | }; | |
108 | ||
c1a0b23b | 109 | static struct ib_sa_client sa_client; |
7a118df3 | 110 | static struct rdma_addr_client addr_client; |
e51060f0 SH |
111 | static LIST_HEAD(dev_list); |
112 | static LIST_HEAD(listen_any_list); | |
113 | static DEFINE_MUTEX(lock); | |
114 | static struct workqueue_struct *cma_wq; | |
4be74b42 | 115 | static int cma_pernet_id; |
e51060f0 | 116 | |
4be74b42 HE |
117 | struct cma_pernet { |
118 | struct idr tcp_ps; | |
119 | struct idr udp_ps; | |
120 | struct idr ipoib_ps; | |
121 | struct idr ib_ps; | |
122 | }; | |
123 | ||
124 | static struct cma_pernet *cma_pernet(struct net *net) | |
125 | { | |
126 | return net_generic(net, cma_pernet_id); | |
127 | } | |
128 | ||
129 | static struct idr *cma_pernet_idr(struct net *net, enum rdma_port_space ps) | |
aac978e1 | 130 | { |
4be74b42 HE |
131 | struct cma_pernet *pernet = cma_pernet(net); |
132 | ||
aac978e1 HE |
133 | switch (ps) { |
134 | case RDMA_PS_TCP: | |
4be74b42 | 135 | return &pernet->tcp_ps; |
aac978e1 | 136 | case RDMA_PS_UDP: |
4be74b42 | 137 | return &pernet->udp_ps; |
aac978e1 | 138 | case RDMA_PS_IPOIB: |
4be74b42 | 139 | return &pernet->ipoib_ps; |
aac978e1 | 140 | case RDMA_PS_IB: |
4be74b42 | 141 | return &pernet->ib_ps; |
aac978e1 HE |
142 | default: |
143 | return NULL; | |
144 | } | |
145 | } | |
146 | ||
e51060f0 SH |
147 | struct cma_device { |
148 | struct list_head list; | |
149 | struct ib_device *device; | |
e51060f0 SH |
150 | struct completion comp; |
151 | atomic_t refcount; | |
152 | struct list_head id_list; | |
153 | }; | |
154 | ||
e51060f0 | 155 | struct rdma_bind_list { |
aac978e1 | 156 | enum rdma_port_space ps; |
e51060f0 SH |
157 | struct hlist_head owners; |
158 | unsigned short port; | |
159 | }; | |
160 | ||
4be74b42 | 161 | static int cma_ps_alloc(struct net *net, enum rdma_port_space ps, |
aac978e1 HE |
162 | struct rdma_bind_list *bind_list, int snum) |
163 | { | |
4be74b42 | 164 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
165 | |
166 | return idr_alloc(idr, bind_list, snum, snum + 1, GFP_KERNEL); | |
167 | } | |
168 | ||
4be74b42 HE |
169 | static struct rdma_bind_list *cma_ps_find(struct net *net, |
170 | enum rdma_port_space ps, int snum) | |
aac978e1 | 171 | { |
4be74b42 | 172 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
173 | |
174 | return idr_find(idr, snum); | |
175 | } | |
176 | ||
4be74b42 | 177 | static void cma_ps_remove(struct net *net, enum rdma_port_space ps, int snum) |
aac978e1 | 178 | { |
4be74b42 | 179 | struct idr *idr = cma_pernet_idr(net, ps); |
aac978e1 HE |
180 | |
181 | idr_remove(idr, snum); | |
182 | } | |
183 | ||
68602120 SH |
184 | enum { |
185 | CMA_OPTION_AFONLY, | |
186 | }; | |
187 | ||
e51060f0 SH |
188 | /* |
189 | * Device removal can occur at anytime, so we need extra handling to | |
190 | * serialize notifying the user of device removal with other callbacks. | |
191 | * We do this by disabling removal notification while a callback is in process, | |
192 | * and reporting it after the callback completes. | |
193 | */ | |
194 | struct rdma_id_private { | |
195 | struct rdma_cm_id id; | |
196 | ||
197 | struct rdma_bind_list *bind_list; | |
198 | struct hlist_node node; | |
d02d1f53 SH |
199 | struct list_head list; /* listen_any_list or cma_device.list */ |
200 | struct list_head listen_list; /* per device listens */ | |
e51060f0 | 201 | struct cma_device *cma_dev; |
c8f6a362 | 202 | struct list_head mc_list; |
e51060f0 | 203 | |
d02d1f53 | 204 | int internal_id; |
550e5ca7 | 205 | enum rdma_cm_state state; |
e51060f0 | 206 | spinlock_t lock; |
c5483388 SH |
207 | struct mutex qp_mutex; |
208 | ||
e51060f0 SH |
209 | struct completion comp; |
210 | atomic_t refcount; | |
de910bd9 | 211 | struct mutex handler_mutex; |
e51060f0 SH |
212 | |
213 | int backlog; | |
214 | int timeout_ms; | |
215 | struct ib_sa_query *query; | |
216 | int query_id; | |
217 | union { | |
218 | struct ib_cm_id *ib; | |
07ebafba | 219 | struct iw_cm_id *iw; |
e51060f0 SH |
220 | } cm_id; |
221 | ||
222 | u32 seq_num; | |
c8f6a362 | 223 | u32 qkey; |
e51060f0 | 224 | u32 qp_num; |
83e9502d | 225 | pid_t owner; |
68602120 | 226 | u32 options; |
e51060f0 | 227 | u8 srq; |
a81c994d | 228 | u8 tos; |
a9bb7912 | 229 | u8 reuseaddr; |
5b0ec991 | 230 | u8 afonly; |
e51060f0 SH |
231 | }; |
232 | ||
c8f6a362 SH |
233 | struct cma_multicast { |
234 | struct rdma_id_private *id_priv; | |
235 | union { | |
236 | struct ib_sa_multicast *ib; | |
237 | } multicast; | |
238 | struct list_head list; | |
239 | void *context; | |
3f446754 | 240 | struct sockaddr_storage addr; |
3c86aa70 | 241 | struct kref mcref; |
c8f6a362 SH |
242 | }; |
243 | ||
e51060f0 SH |
244 | struct cma_work { |
245 | struct work_struct work; | |
246 | struct rdma_id_private *id; | |
550e5ca7 NM |
247 | enum rdma_cm_state old_state; |
248 | enum rdma_cm_state new_state; | |
e51060f0 SH |
249 | struct rdma_cm_event event; |
250 | }; | |
251 | ||
dd5bdff8 OG |
252 | struct cma_ndev_work { |
253 | struct work_struct work; | |
254 | struct rdma_id_private *id; | |
255 | struct rdma_cm_event event; | |
256 | }; | |
257 | ||
3c86aa70 EC |
258 | struct iboe_mcast_work { |
259 | struct work_struct work; | |
260 | struct rdma_id_private *id; | |
261 | struct cma_multicast *mc; | |
262 | }; | |
263 | ||
e51060f0 SH |
264 | union cma_ip_addr { |
265 | struct in6_addr ip6; | |
266 | struct { | |
1b90c137 AV |
267 | __be32 pad[3]; |
268 | __be32 addr; | |
e51060f0 SH |
269 | } ip4; |
270 | }; | |
271 | ||
272 | struct cma_hdr { | |
273 | u8 cma_version; | |
274 | u8 ip_version; /* IP version: 7:4 */ | |
1b90c137 | 275 | __be16 port; |
e51060f0 SH |
276 | union cma_ip_addr src_addr; |
277 | union cma_ip_addr dst_addr; | |
278 | }; | |
279 | ||
e51060f0 | 280 | #define CMA_VERSION 0x00 |
e51060f0 | 281 | |
4c21b5bc HE |
282 | struct cma_req_info { |
283 | struct ib_device *device; | |
284 | int port; | |
285 | union ib_gid local_gid; | |
286 | __be64 service_id; | |
287 | u16 pkey; | |
288 | bool has_gid:1; | |
289 | }; | |
290 | ||
550e5ca7 | 291 | static int cma_comp(struct rdma_id_private *id_priv, enum rdma_cm_state comp) |
e51060f0 SH |
292 | { |
293 | unsigned long flags; | |
294 | int ret; | |
295 | ||
296 | spin_lock_irqsave(&id_priv->lock, flags); | |
297 | ret = (id_priv->state == comp); | |
298 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
299 | return ret; | |
300 | } | |
301 | ||
302 | static int cma_comp_exch(struct rdma_id_private *id_priv, | |
550e5ca7 | 303 | enum rdma_cm_state comp, enum rdma_cm_state exch) |
e51060f0 SH |
304 | { |
305 | unsigned long flags; | |
306 | int ret; | |
307 | ||
308 | spin_lock_irqsave(&id_priv->lock, flags); | |
309 | if ((ret = (id_priv->state == comp))) | |
310 | id_priv->state = exch; | |
311 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
312 | return ret; | |
313 | } | |
314 | ||
550e5ca7 NM |
315 | static enum rdma_cm_state cma_exch(struct rdma_id_private *id_priv, |
316 | enum rdma_cm_state exch) | |
e51060f0 SH |
317 | { |
318 | unsigned long flags; | |
550e5ca7 | 319 | enum rdma_cm_state old; |
e51060f0 SH |
320 | |
321 | spin_lock_irqsave(&id_priv->lock, flags); | |
322 | old = id_priv->state; | |
323 | id_priv->state = exch; | |
324 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
325 | return old; | |
326 | } | |
327 | ||
4c21b5bc | 328 | static inline u8 cma_get_ip_ver(const struct cma_hdr *hdr) |
e51060f0 SH |
329 | { |
330 | return hdr->ip_version >> 4; | |
331 | } | |
332 | ||
333 | static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver) | |
334 | { | |
335 | hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF); | |
336 | } | |
337 | ||
e51060f0 SH |
338 | static void cma_attach_to_dev(struct rdma_id_private *id_priv, |
339 | struct cma_device *cma_dev) | |
340 | { | |
341 | atomic_inc(&cma_dev->refcount); | |
342 | id_priv->cma_dev = cma_dev; | |
343 | id_priv->id.device = cma_dev->device; | |
3c86aa70 EC |
344 | id_priv->id.route.addr.dev_addr.transport = |
345 | rdma_node_get_transport(cma_dev->device->node_type); | |
e51060f0 SH |
346 | list_add_tail(&id_priv->list, &cma_dev->id_list); |
347 | } | |
348 | ||
349 | static inline void cma_deref_dev(struct cma_device *cma_dev) | |
350 | { | |
351 | if (atomic_dec_and_test(&cma_dev->refcount)) | |
352 | complete(&cma_dev->comp); | |
353 | } | |
354 | ||
3c86aa70 EC |
355 | static inline void release_mc(struct kref *kref) |
356 | { | |
357 | struct cma_multicast *mc = container_of(kref, struct cma_multicast, mcref); | |
358 | ||
359 | kfree(mc->multicast.ib); | |
360 | kfree(mc); | |
361 | } | |
362 | ||
a396d43a | 363 | static void cma_release_dev(struct rdma_id_private *id_priv) |
e51060f0 | 364 | { |
a396d43a | 365 | mutex_lock(&lock); |
e51060f0 SH |
366 | list_del(&id_priv->list); |
367 | cma_deref_dev(id_priv->cma_dev); | |
368 | id_priv->cma_dev = NULL; | |
a396d43a | 369 | mutex_unlock(&lock); |
e51060f0 SH |
370 | } |
371 | ||
f4753834 SH |
372 | static inline struct sockaddr *cma_src_addr(struct rdma_id_private *id_priv) |
373 | { | |
374 | return (struct sockaddr *) &id_priv->id.route.addr.src_addr; | |
375 | } | |
376 | ||
377 | static inline struct sockaddr *cma_dst_addr(struct rdma_id_private *id_priv) | |
378 | { | |
379 | return (struct sockaddr *) &id_priv->id.route.addr.dst_addr; | |
380 | } | |
381 | ||
382 | static inline unsigned short cma_family(struct rdma_id_private *id_priv) | |
383 | { | |
384 | return id_priv->id.route.addr.src_addr.ss_family; | |
385 | } | |
386 | ||
5c438135 | 387 | static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey) |
c8f6a362 SH |
388 | { |
389 | struct ib_sa_mcmember_rec rec; | |
390 | int ret = 0; | |
391 | ||
5c438135 SH |
392 | if (id_priv->qkey) { |
393 | if (qkey && id_priv->qkey != qkey) | |
394 | return -EINVAL; | |
d2ca39f2 | 395 | return 0; |
5c438135 SH |
396 | } |
397 | ||
398 | if (qkey) { | |
399 | id_priv->qkey = qkey; | |
400 | return 0; | |
401 | } | |
d2ca39f2 YE |
402 | |
403 | switch (id_priv->id.ps) { | |
c8f6a362 | 404 | case RDMA_PS_UDP: |
5c438135 | 405 | case RDMA_PS_IB: |
d2ca39f2 | 406 | id_priv->qkey = RDMA_UDP_QKEY; |
c8f6a362 SH |
407 | break; |
408 | case RDMA_PS_IPOIB: | |
d2ca39f2 YE |
409 | ib_addr_get_mgid(&id_priv->id.route.addr.dev_addr, &rec.mgid); |
410 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, | |
411 | id_priv->id.port_num, &rec.mgid, | |
412 | &rec); | |
413 | if (!ret) | |
414 | id_priv->qkey = be32_to_cpu(rec.qkey); | |
c8f6a362 SH |
415 | break; |
416 | default: | |
417 | break; | |
418 | } | |
419 | return ret; | |
420 | } | |
421 | ||
680f920a SH |
422 | static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr) |
423 | { | |
424 | dev_addr->dev_type = ARPHRD_INFINIBAND; | |
425 | rdma_addr_set_sgid(dev_addr, (union ib_gid *) &sib->sib_addr); | |
426 | ib_addr_set_pkey(dev_addr, ntohs(sib->sib_pkey)); | |
427 | } | |
428 | ||
429 | static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_addr) | |
430 | { | |
431 | int ret; | |
432 | ||
433 | if (addr->sa_family != AF_IB) { | |
dd5f03be | 434 | ret = rdma_translate_ip(addr, dev_addr, NULL); |
680f920a SH |
435 | } else { |
436 | cma_translate_ib((struct sockaddr_ib *) addr, dev_addr); | |
437 | ret = 0; | |
438 | } | |
439 | ||
440 | return ret; | |
441 | } | |
442 | ||
7c11147d | 443 | static inline int cma_validate_port(struct ib_device *device, u8 port, |
abae1b71 MB |
444 | union ib_gid *gid, int dev_type, |
445 | int bound_if_index) | |
7c11147d | 446 | { |
7c11147d | 447 | int ret = -ENODEV; |
abae1b71 | 448 | struct net_device *ndev = NULL; |
7c11147d MW |
449 | |
450 | if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port)) | |
451 | return ret; | |
452 | ||
453 | if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port)) | |
454 | return ret; | |
455 | ||
abae1b71 MB |
456 | if (dev_type == ARPHRD_ETHER) |
457 | ndev = dev_get_by_index(&init_net, bound_if_index); | |
458 | ||
459 | ret = ib_find_cached_gid_by_port(device, gid, port, ndev, NULL); | |
460 | ||
461 | if (ndev) | |
462 | dev_put(ndev); | |
7c11147d MW |
463 | |
464 | return ret; | |
465 | } | |
466 | ||
be9130cc DL |
467 | static int cma_acquire_dev(struct rdma_id_private *id_priv, |
468 | struct rdma_id_private *listen_id_priv) | |
e51060f0 | 469 | { |
c8f6a362 | 470 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 471 | struct cma_device *cma_dev; |
7c11147d | 472 | union ib_gid gid, iboe_gid, *gidp; |
e51060f0 | 473 | int ret = -ENODEV; |
7c11147d | 474 | u8 port; |
e51060f0 | 475 | |
7c11147d | 476 | if (dev_addr->dev_type != ARPHRD_INFINIBAND && |
2efdd6a0 MS |
477 | id_priv->id.ps == RDMA_PS_IPOIB) |
478 | return -EINVAL; | |
479 | ||
a396d43a | 480 | mutex_lock(&lock); |
7b85627b MS |
481 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
482 | &iboe_gid); | |
483 | ||
3c86aa70 EC |
484 | memcpy(&gid, dev_addr->src_dev_addr + |
485 | rdma_addr_gid_offset(dev_addr), sizeof gid); | |
7c11147d MW |
486 | |
487 | if (listen_id_priv) { | |
be9130cc DL |
488 | cma_dev = listen_id_priv->cma_dev; |
489 | port = listen_id_priv->id.port_num; | |
5d9fb044 | 490 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
7c11147d | 491 | &iboe_gid : &gid; |
be9130cc | 492 | |
7c11147d | 493 | ret = cma_validate_port(cma_dev->device, port, gidp, |
abae1b71 MB |
494 | dev_addr->dev_type, |
495 | dev_addr->bound_dev_if); | |
7c11147d MW |
496 | if (!ret) { |
497 | id_priv->id.port_num = port; | |
be9130cc DL |
498 | goto out; |
499 | } | |
500 | } | |
7c11147d | 501 | |
e51060f0 | 502 | list_for_each_entry(cma_dev, &dev_list, list) { |
3c86aa70 | 503 | for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) { |
be9130cc DL |
504 | if (listen_id_priv && |
505 | listen_id_priv->cma_dev == cma_dev && | |
506 | listen_id_priv->id.port_num == port) | |
507 | continue; | |
7c11147d | 508 | |
5d9fb044 | 509 | gidp = rdma_protocol_roce(cma_dev->device, port) ? |
7c11147d MW |
510 | &iboe_gid : &gid; |
511 | ||
512 | ret = cma_validate_port(cma_dev->device, port, gidp, | |
abae1b71 MB |
513 | dev_addr->dev_type, |
514 | dev_addr->bound_dev_if); | |
7c11147d MW |
515 | if (!ret) { |
516 | id_priv->id.port_num = port; | |
517 | goto out; | |
3c86aa70 | 518 | } |
e51060f0 SH |
519 | } |
520 | } | |
3c86aa70 EC |
521 | |
522 | out: | |
523 | if (!ret) | |
524 | cma_attach_to_dev(id_priv, cma_dev); | |
525 | ||
a396d43a | 526 | mutex_unlock(&lock); |
e51060f0 SH |
527 | return ret; |
528 | } | |
529 | ||
f17df3b0 SH |
530 | /* |
531 | * Select the source IB device and address to reach the destination IB address. | |
532 | */ | |
533 | static int cma_resolve_ib_dev(struct rdma_id_private *id_priv) | |
534 | { | |
535 | struct cma_device *cma_dev, *cur_dev; | |
536 | struct sockaddr_ib *addr; | |
537 | union ib_gid gid, sgid, *dgid; | |
538 | u16 pkey, index; | |
8fb488d7 | 539 | u8 p; |
f17df3b0 SH |
540 | int i; |
541 | ||
542 | cma_dev = NULL; | |
543 | addr = (struct sockaddr_ib *) cma_dst_addr(id_priv); | |
544 | dgid = (union ib_gid *) &addr->sib_addr; | |
545 | pkey = ntohs(addr->sib_pkey); | |
546 | ||
547 | list_for_each_entry(cur_dev, &dev_list, list) { | |
f17df3b0 | 548 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { |
30a74ef4 | 549 | if (!rdma_cap_af_ib(cur_dev->device, p)) |
fef60902 MW |
550 | continue; |
551 | ||
f17df3b0 SH |
552 | if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index)) |
553 | continue; | |
554 | ||
55ee3ab2 MB |
555 | for (i = 0; !ib_get_cached_gid(cur_dev->device, p, i, |
556 | &gid, NULL); | |
557 | i++) { | |
f17df3b0 SH |
558 | if (!memcmp(&gid, dgid, sizeof(gid))) { |
559 | cma_dev = cur_dev; | |
560 | sgid = gid; | |
8fb488d7 | 561 | id_priv->id.port_num = p; |
f17df3b0 SH |
562 | goto found; |
563 | } | |
564 | ||
565 | if (!cma_dev && (gid.global.subnet_prefix == | |
566 | dgid->global.subnet_prefix)) { | |
567 | cma_dev = cur_dev; | |
568 | sgid = gid; | |
8fb488d7 | 569 | id_priv->id.port_num = p; |
f17df3b0 SH |
570 | } |
571 | } | |
572 | } | |
573 | } | |
574 | ||
575 | if (!cma_dev) | |
576 | return -ENODEV; | |
577 | ||
578 | found: | |
579 | cma_attach_to_dev(id_priv, cma_dev); | |
f17df3b0 SH |
580 | addr = (struct sockaddr_ib *) cma_src_addr(id_priv); |
581 | memcpy(&addr->sib_addr, &sgid, sizeof sgid); | |
582 | cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr); | |
583 | return 0; | |
584 | } | |
585 | ||
e51060f0 SH |
586 | static void cma_deref_id(struct rdma_id_private *id_priv) |
587 | { | |
588 | if (atomic_dec_and_test(&id_priv->refcount)) | |
589 | complete(&id_priv->comp); | |
590 | } | |
591 | ||
de910bd9 | 592 | static int cma_disable_callback(struct rdma_id_private *id_priv, |
550e5ca7 | 593 | enum rdma_cm_state state) |
8aa08602 | 594 | { |
de910bd9 OG |
595 | mutex_lock(&id_priv->handler_mutex); |
596 | if (id_priv->state != state) { | |
597 | mutex_unlock(&id_priv->handler_mutex); | |
598 | return -EINVAL; | |
599 | } | |
600 | return 0; | |
e51060f0 SH |
601 | } |
602 | ||
fa20105e GS |
603 | struct rdma_cm_id *rdma_create_id(struct net *net, |
604 | rdma_cm_event_handler event_handler, | |
b26f9b99 SH |
605 | void *context, enum rdma_port_space ps, |
606 | enum ib_qp_type qp_type) | |
e51060f0 SH |
607 | { |
608 | struct rdma_id_private *id_priv; | |
609 | ||
610 | id_priv = kzalloc(sizeof *id_priv, GFP_KERNEL); | |
611 | if (!id_priv) | |
612 | return ERR_PTR(-ENOMEM); | |
613 | ||
83e9502d | 614 | id_priv->owner = task_pid_nr(current); |
550e5ca7 | 615 | id_priv->state = RDMA_CM_IDLE; |
e51060f0 SH |
616 | id_priv->id.context = context; |
617 | id_priv->id.event_handler = event_handler; | |
618 | id_priv->id.ps = ps; | |
b26f9b99 | 619 | id_priv->id.qp_type = qp_type; |
e51060f0 | 620 | spin_lock_init(&id_priv->lock); |
c5483388 | 621 | mutex_init(&id_priv->qp_mutex); |
e51060f0 SH |
622 | init_completion(&id_priv->comp); |
623 | atomic_set(&id_priv->refcount, 1); | |
de910bd9 | 624 | mutex_init(&id_priv->handler_mutex); |
e51060f0 | 625 | INIT_LIST_HEAD(&id_priv->listen_list); |
c8f6a362 | 626 | INIT_LIST_HEAD(&id_priv->mc_list); |
e51060f0 | 627 | get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num); |
fa20105e | 628 | id_priv->id.route.addr.dev_addr.net = get_net(net); |
e51060f0 SH |
629 | |
630 | return &id_priv->id; | |
631 | } | |
632 | EXPORT_SYMBOL(rdma_create_id); | |
633 | ||
c8f6a362 | 634 | static int cma_init_ud_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
e51060f0 SH |
635 | { |
636 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 637 | int qp_attr_mask, ret; |
e51060f0 | 638 | |
c8f6a362 SH |
639 | qp_attr.qp_state = IB_QPS_INIT; |
640 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); | |
e51060f0 SH |
641 | if (ret) |
642 | return ret; | |
643 | ||
c8f6a362 SH |
644 | ret = ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
645 | if (ret) | |
646 | return ret; | |
647 | ||
648 | qp_attr.qp_state = IB_QPS_RTR; | |
649 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE); | |
650 | if (ret) | |
651 | return ret; | |
652 | ||
653 | qp_attr.qp_state = IB_QPS_RTS; | |
654 | qp_attr.sq_psn = 0; | |
655 | ret = ib_modify_qp(qp, &qp_attr, IB_QP_STATE | IB_QP_SQ_PSN); | |
656 | ||
657 | return ret; | |
e51060f0 SH |
658 | } |
659 | ||
c8f6a362 | 660 | static int cma_init_conn_qp(struct rdma_id_private *id_priv, struct ib_qp *qp) |
07ebafba TT |
661 | { |
662 | struct ib_qp_attr qp_attr; | |
c8f6a362 | 663 | int qp_attr_mask, ret; |
07ebafba TT |
664 | |
665 | qp_attr.qp_state = IB_QPS_INIT; | |
c8f6a362 SH |
666 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
667 | if (ret) | |
668 | return ret; | |
07ebafba | 669 | |
c8f6a362 | 670 | return ib_modify_qp(qp, &qp_attr, qp_attr_mask); |
07ebafba TT |
671 | } |
672 | ||
e51060f0 SH |
673 | int rdma_create_qp(struct rdma_cm_id *id, struct ib_pd *pd, |
674 | struct ib_qp_init_attr *qp_init_attr) | |
675 | { | |
676 | struct rdma_id_private *id_priv; | |
677 | struct ib_qp *qp; | |
678 | int ret; | |
679 | ||
680 | id_priv = container_of(id, struct rdma_id_private, id); | |
681 | if (id->device != pd->device) | |
682 | return -EINVAL; | |
683 | ||
684 | qp = ib_create_qp(pd, qp_init_attr); | |
685 | if (IS_ERR(qp)) | |
686 | return PTR_ERR(qp); | |
687 | ||
b26f9b99 | 688 | if (id->qp_type == IB_QPT_UD) |
c8f6a362 SH |
689 | ret = cma_init_ud_qp(id_priv, qp); |
690 | else | |
691 | ret = cma_init_conn_qp(id_priv, qp); | |
e51060f0 SH |
692 | if (ret) |
693 | goto err; | |
694 | ||
695 | id->qp = qp; | |
696 | id_priv->qp_num = qp->qp_num; | |
e51060f0 SH |
697 | id_priv->srq = (qp->srq != NULL); |
698 | return 0; | |
699 | err: | |
700 | ib_destroy_qp(qp); | |
701 | return ret; | |
702 | } | |
703 | EXPORT_SYMBOL(rdma_create_qp); | |
704 | ||
705 | void rdma_destroy_qp(struct rdma_cm_id *id) | |
706 | { | |
c5483388 SH |
707 | struct rdma_id_private *id_priv; |
708 | ||
709 | id_priv = container_of(id, struct rdma_id_private, id); | |
710 | mutex_lock(&id_priv->qp_mutex); | |
711 | ib_destroy_qp(id_priv->id.qp); | |
712 | id_priv->id.qp = NULL; | |
713 | mutex_unlock(&id_priv->qp_mutex); | |
e51060f0 SH |
714 | } |
715 | EXPORT_SYMBOL(rdma_destroy_qp); | |
716 | ||
5851bb89 SH |
717 | static int cma_modify_qp_rtr(struct rdma_id_private *id_priv, |
718 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
719 | { |
720 | struct ib_qp_attr qp_attr; | |
721 | int qp_attr_mask, ret; | |
dd5f03be | 722 | union ib_gid sgid; |
e51060f0 | 723 | |
c5483388 SH |
724 | mutex_lock(&id_priv->qp_mutex); |
725 | if (!id_priv->id.qp) { | |
726 | ret = 0; | |
727 | goto out; | |
728 | } | |
e51060f0 SH |
729 | |
730 | /* Need to update QP attributes from default values. */ | |
731 | qp_attr.qp_state = IB_QPS_INIT; | |
c5483388 | 732 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 733 | if (ret) |
c5483388 | 734 | goto out; |
e51060f0 | 735 | |
c5483388 | 736 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
e51060f0 | 737 | if (ret) |
c5483388 | 738 | goto out; |
e51060f0 SH |
739 | |
740 | qp_attr.qp_state = IB_QPS_RTR; | |
c5483388 | 741 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 742 | if (ret) |
c5483388 | 743 | goto out; |
e51060f0 | 744 | |
dd5f03be | 745 | ret = ib_query_gid(id_priv->id.device, id_priv->id.port_num, |
55ee3ab2 | 746 | qp_attr.ah_attr.grh.sgid_index, &sgid, NULL); |
dd5f03be MB |
747 | if (ret) |
748 | goto out; | |
749 | ||
fef60902 MW |
750 | BUG_ON(id_priv->cma_dev->device != id_priv->id.device); |
751 | ||
5851bb89 SH |
752 | if (conn_param) |
753 | qp_attr.max_dest_rd_atomic = conn_param->responder_resources; | |
c5483388 SH |
754 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
755 | out: | |
756 | mutex_unlock(&id_priv->qp_mutex); | |
757 | return ret; | |
e51060f0 SH |
758 | } |
759 | ||
5851bb89 SH |
760 | static int cma_modify_qp_rts(struct rdma_id_private *id_priv, |
761 | struct rdma_conn_param *conn_param) | |
e51060f0 SH |
762 | { |
763 | struct ib_qp_attr qp_attr; | |
764 | int qp_attr_mask, ret; | |
765 | ||
c5483388 SH |
766 | mutex_lock(&id_priv->qp_mutex); |
767 | if (!id_priv->id.qp) { | |
768 | ret = 0; | |
769 | goto out; | |
770 | } | |
e51060f0 SH |
771 | |
772 | qp_attr.qp_state = IB_QPS_RTS; | |
c5483388 | 773 | ret = rdma_init_qp_attr(&id_priv->id, &qp_attr, &qp_attr_mask); |
e51060f0 | 774 | if (ret) |
c5483388 | 775 | goto out; |
e51060f0 | 776 | |
5851bb89 SH |
777 | if (conn_param) |
778 | qp_attr.max_rd_atomic = conn_param->initiator_depth; | |
c5483388 SH |
779 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, qp_attr_mask); |
780 | out: | |
781 | mutex_unlock(&id_priv->qp_mutex); | |
782 | return ret; | |
e51060f0 SH |
783 | } |
784 | ||
c5483388 | 785 | static int cma_modify_qp_err(struct rdma_id_private *id_priv) |
e51060f0 SH |
786 | { |
787 | struct ib_qp_attr qp_attr; | |
c5483388 | 788 | int ret; |
e51060f0 | 789 | |
c5483388 SH |
790 | mutex_lock(&id_priv->qp_mutex); |
791 | if (!id_priv->id.qp) { | |
792 | ret = 0; | |
793 | goto out; | |
794 | } | |
e51060f0 SH |
795 | |
796 | qp_attr.qp_state = IB_QPS_ERR; | |
c5483388 SH |
797 | ret = ib_modify_qp(id_priv->id.qp, &qp_attr, IB_QP_STATE); |
798 | out: | |
799 | mutex_unlock(&id_priv->qp_mutex); | |
800 | return ret; | |
e51060f0 SH |
801 | } |
802 | ||
c8f6a362 SH |
803 | static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv, |
804 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) | |
805 | { | |
806 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
807 | int ret; | |
3c86aa70 EC |
808 | u16 pkey; |
809 | ||
227128fc | 810 | if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num)) |
3c86aa70 | 811 | pkey = 0xffff; |
fef60902 MW |
812 | else |
813 | pkey = ib_addr_get_pkey(dev_addr); | |
c8f6a362 SH |
814 | |
815 | ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num, | |
3c86aa70 | 816 | pkey, &qp_attr->pkey_index); |
c8f6a362 SH |
817 | if (ret) |
818 | return ret; | |
819 | ||
820 | qp_attr->port_num = id_priv->id.port_num; | |
821 | *qp_attr_mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT; | |
822 | ||
b26f9b99 | 823 | if (id_priv->id.qp_type == IB_QPT_UD) { |
5c438135 | 824 | ret = cma_set_qkey(id_priv, 0); |
d2ca39f2 YE |
825 | if (ret) |
826 | return ret; | |
827 | ||
c8f6a362 SH |
828 | qp_attr->qkey = id_priv->qkey; |
829 | *qp_attr_mask |= IB_QP_QKEY; | |
830 | } else { | |
831 | qp_attr->qp_access_flags = 0; | |
832 | *qp_attr_mask |= IB_QP_ACCESS_FLAGS; | |
833 | } | |
834 | return 0; | |
835 | } | |
836 | ||
e51060f0 SH |
837 | int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr, |
838 | int *qp_attr_mask) | |
839 | { | |
840 | struct rdma_id_private *id_priv; | |
c8f6a362 | 841 | int ret = 0; |
e51060f0 SH |
842 | |
843 | id_priv = container_of(id, struct rdma_id_private, id); | |
72219cea | 844 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 845 | if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD)) |
c8f6a362 SH |
846 | ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask); |
847 | else | |
848 | ret = ib_cm_init_qp_attr(id_priv->cm_id.ib, qp_attr, | |
849 | qp_attr_mask); | |
dd5f03be | 850 | |
e51060f0 SH |
851 | if (qp_attr->qp_state == IB_QPS_RTR) |
852 | qp_attr->rq_psn = id_priv->seq_num; | |
04215330 | 853 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
c8f6a362 | 854 | if (!id_priv->cm_id.iw) { |
8f076531 | 855 | qp_attr->qp_access_flags = 0; |
c8f6a362 SH |
856 | *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS; |
857 | } else | |
858 | ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr, | |
859 | qp_attr_mask); | |
21655afc | 860 | } else |
e51060f0 | 861 | ret = -ENOSYS; |
e51060f0 SH |
862 | |
863 | return ret; | |
864 | } | |
865 | EXPORT_SYMBOL(rdma_init_qp_attr); | |
866 | ||
867 | static inline int cma_zero_addr(struct sockaddr *addr) | |
868 | { | |
2e2d190c SH |
869 | switch (addr->sa_family) { |
870 | case AF_INET: | |
871 | return ipv4_is_zeronet(((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
872 | case AF_INET6: | |
873 | return ipv6_addr_any(&((struct sockaddr_in6 *) addr)->sin6_addr); | |
874 | case AF_IB: | |
875 | return ib_addr_any(&((struct sockaddr_ib *) addr)->sib_addr); | |
876 | default: | |
877 | return 0; | |
e51060f0 SH |
878 | } |
879 | } | |
880 | ||
881 | static inline int cma_loopback_addr(struct sockaddr *addr) | |
882 | { | |
2e2d190c SH |
883 | switch (addr->sa_family) { |
884 | case AF_INET: | |
885 | return ipv4_is_loopback(((struct sockaddr_in *) addr)->sin_addr.s_addr); | |
886 | case AF_INET6: | |
887 | return ipv6_addr_loopback(&((struct sockaddr_in6 *) addr)->sin6_addr); | |
888 | case AF_IB: | |
889 | return ib_addr_loopback(&((struct sockaddr_ib *) addr)->sib_addr); | |
890 | default: | |
891 | return 0; | |
892 | } | |
e51060f0 SH |
893 | } |
894 | ||
895 | static inline int cma_any_addr(struct sockaddr *addr) | |
896 | { | |
897 | return cma_zero_addr(addr) || cma_loopback_addr(addr); | |
898 | } | |
899 | ||
43b752da HS |
900 | static int cma_addr_cmp(struct sockaddr *src, struct sockaddr *dst) |
901 | { | |
902 | if (src->sa_family != dst->sa_family) | |
903 | return -1; | |
904 | ||
905 | switch (src->sa_family) { | |
906 | case AF_INET: | |
907 | return ((struct sockaddr_in *) src)->sin_addr.s_addr != | |
908 | ((struct sockaddr_in *) dst)->sin_addr.s_addr; | |
2e2d190c | 909 | case AF_INET6: |
43b752da HS |
910 | return ipv6_addr_cmp(&((struct sockaddr_in6 *) src)->sin6_addr, |
911 | &((struct sockaddr_in6 *) dst)->sin6_addr); | |
2e2d190c SH |
912 | default: |
913 | return ib_addr_cmp(&((struct sockaddr_ib *) src)->sib_addr, | |
914 | &((struct sockaddr_ib *) dst)->sib_addr); | |
43b752da HS |
915 | } |
916 | } | |
917 | ||
58afdcb7 | 918 | static __be16 cma_port(struct sockaddr *addr) |
628e5f6d | 919 | { |
58afdcb7 SH |
920 | struct sockaddr_ib *sib; |
921 | ||
922 | switch (addr->sa_family) { | |
923 | case AF_INET: | |
628e5f6d | 924 | return ((struct sockaddr_in *) addr)->sin_port; |
58afdcb7 | 925 | case AF_INET6: |
628e5f6d | 926 | return ((struct sockaddr_in6 *) addr)->sin6_port; |
58afdcb7 SH |
927 | case AF_IB: |
928 | sib = (struct sockaddr_ib *) addr; | |
929 | return htons((u16) (be64_to_cpu(sib->sib_sid) & | |
930 | be64_to_cpu(sib->sib_sid_mask))); | |
931 | default: | |
932 | return 0; | |
933 | } | |
628e5f6d SH |
934 | } |
935 | ||
e51060f0 SH |
936 | static inline int cma_any_port(struct sockaddr *addr) |
937 | { | |
628e5f6d | 938 | return !cma_port(addr); |
e51060f0 SH |
939 | } |
940 | ||
0c505f70 HE |
941 | static void cma_save_ib_info(struct sockaddr *src_addr, |
942 | struct sockaddr *dst_addr, | |
943 | struct rdma_cm_id *listen_id, | |
fbaa1a6d | 944 | struct ib_sa_path_rec *path) |
e51060f0 | 945 | { |
fbaa1a6d SH |
946 | struct sockaddr_ib *listen_ib, *ib; |
947 | ||
948 | listen_ib = (struct sockaddr_ib *) &listen_id->route.addr.src_addr; | |
0c505f70 HE |
949 | if (src_addr) { |
950 | ib = (struct sockaddr_ib *)src_addr; | |
951 | ib->sib_family = AF_IB; | |
952 | if (path) { | |
953 | ib->sib_pkey = path->pkey; | |
954 | ib->sib_flowinfo = path->flow_label; | |
955 | memcpy(&ib->sib_addr, &path->sgid, 16); | |
956 | ib->sib_sid = path->service_id; | |
957 | ib->sib_scope_id = 0; | |
958 | } else { | |
959 | ib->sib_pkey = listen_ib->sib_pkey; | |
960 | ib->sib_flowinfo = listen_ib->sib_flowinfo; | |
961 | ib->sib_addr = listen_ib->sib_addr; | |
962 | ib->sib_sid = listen_ib->sib_sid; | |
963 | ib->sib_scope_id = listen_ib->sib_scope_id; | |
964 | } | |
965 | ib->sib_sid_mask = cpu_to_be64(0xffffffffffffffffULL); | |
c07678bb | 966 | } |
0c505f70 HE |
967 | if (dst_addr) { |
968 | ib = (struct sockaddr_ib *)dst_addr; | |
969 | ib->sib_family = AF_IB; | |
970 | if (path) { | |
971 | ib->sib_pkey = path->pkey; | |
972 | ib->sib_flowinfo = path->flow_label; | |
973 | memcpy(&ib->sib_addr, &path->dgid, 16); | |
974 | } | |
c07678bb | 975 | } |
fbaa1a6d | 976 | } |
e51060f0 | 977 | |
0c505f70 HE |
978 | static void cma_save_ip4_info(struct sockaddr *src_addr, |
979 | struct sockaddr *dst_addr, | |
980 | struct cma_hdr *hdr, | |
981 | __be16 local_port) | |
fbaa1a6d | 982 | { |
28521440 | 983 | struct sockaddr_in *ip4; |
e51060f0 | 984 | |
0c505f70 HE |
985 | if (src_addr) { |
986 | ip4 = (struct sockaddr_in *)src_addr; | |
987 | ip4->sin_family = AF_INET; | |
988 | ip4->sin_addr.s_addr = hdr->dst_addr.ip4.addr; | |
989 | ip4->sin_port = local_port; | |
990 | } | |
fbaa1a6d | 991 | |
0c505f70 HE |
992 | if (dst_addr) { |
993 | ip4 = (struct sockaddr_in *)dst_addr; | |
994 | ip4->sin_family = AF_INET; | |
995 | ip4->sin_addr.s_addr = hdr->src_addr.ip4.addr; | |
996 | ip4->sin_port = hdr->port; | |
997 | } | |
e51060f0 SH |
998 | } |
999 | ||
0c505f70 HE |
1000 | static void cma_save_ip6_info(struct sockaddr *src_addr, |
1001 | struct sockaddr *dst_addr, | |
1002 | struct cma_hdr *hdr, | |
1003 | __be16 local_port) | |
e51060f0 | 1004 | { |
28521440 | 1005 | struct sockaddr_in6 *ip6; |
e51060f0 | 1006 | |
0c505f70 HE |
1007 | if (src_addr) { |
1008 | ip6 = (struct sockaddr_in6 *)src_addr; | |
1009 | ip6->sin6_family = AF_INET6; | |
1010 | ip6->sin6_addr = hdr->dst_addr.ip6; | |
1011 | ip6->sin6_port = local_port; | |
1012 | } | |
fbaa1a6d | 1013 | |
0c505f70 HE |
1014 | if (dst_addr) { |
1015 | ip6 = (struct sockaddr_in6 *)dst_addr; | |
1016 | ip6->sin6_family = AF_INET6; | |
1017 | ip6->sin6_addr = hdr->src_addr.ip6; | |
1018 | ip6->sin6_port = hdr->port; | |
1019 | } | |
fbaa1a6d SH |
1020 | } |
1021 | ||
0c505f70 | 1022 | static u16 cma_port_from_service_id(__be64 service_id) |
fbaa1a6d | 1023 | { |
0c505f70 HE |
1024 | return (u16)be64_to_cpu(service_id); |
1025 | } | |
fbaa1a6d | 1026 | |
0c505f70 HE |
1027 | static int cma_save_ip_info(struct sockaddr *src_addr, |
1028 | struct sockaddr *dst_addr, | |
1029 | struct ib_cm_event *ib_event, | |
1030 | __be64 service_id) | |
1031 | { | |
1032 | struct cma_hdr *hdr; | |
1033 | __be16 port; | |
fbaa1a6d SH |
1034 | |
1035 | hdr = ib_event->private_data; | |
1036 | if (hdr->cma_version != CMA_VERSION) | |
1037 | return -EINVAL; | |
1038 | ||
0c505f70 HE |
1039 | port = htons(cma_port_from_service_id(service_id)); |
1040 | ||
fbaa1a6d | 1041 | switch (cma_get_ip_ver(hdr)) { |
e51060f0 | 1042 | case 4: |
0c505f70 | 1043 | cma_save_ip4_info(src_addr, dst_addr, hdr, port); |
e51060f0 SH |
1044 | break; |
1045 | case 6: | |
0c505f70 | 1046 | cma_save_ip6_info(src_addr, dst_addr, hdr, port); |
e51060f0 SH |
1047 | break; |
1048 | default: | |
4c21b5bc | 1049 | return -EAFNOSUPPORT; |
e51060f0 | 1050 | } |
0c505f70 | 1051 | |
fbaa1a6d | 1052 | return 0; |
e51060f0 SH |
1053 | } |
1054 | ||
0c505f70 HE |
1055 | static int cma_save_net_info(struct sockaddr *src_addr, |
1056 | struct sockaddr *dst_addr, | |
1057 | struct rdma_cm_id *listen_id, | |
1058 | struct ib_cm_event *ib_event, | |
1059 | sa_family_t sa_family, __be64 service_id) | |
1060 | { | |
1061 | if (sa_family == AF_IB) { | |
1062 | if (ib_event->event == IB_CM_REQ_RECEIVED) | |
1063 | cma_save_ib_info(src_addr, dst_addr, listen_id, | |
1064 | ib_event->param.req_rcvd.primary_path); | |
1065 | else if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) | |
1066 | cma_save_ib_info(src_addr, dst_addr, listen_id, NULL); | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | return cma_save_ip_info(src_addr, dst_addr, ib_event, service_id); | |
1071 | } | |
1072 | ||
4c21b5bc HE |
1073 | static int cma_save_req_info(const struct ib_cm_event *ib_event, |
1074 | struct cma_req_info *req) | |
1075 | { | |
1076 | const struct ib_cm_req_event_param *req_param = | |
1077 | &ib_event->param.req_rcvd; | |
1078 | const struct ib_cm_sidr_req_event_param *sidr_param = | |
1079 | &ib_event->param.sidr_req_rcvd; | |
1080 | ||
1081 | switch (ib_event->event) { | |
1082 | case IB_CM_REQ_RECEIVED: | |
1083 | req->device = req_param->listen_id->device; | |
1084 | req->port = req_param->port; | |
1085 | memcpy(&req->local_gid, &req_param->primary_path->sgid, | |
1086 | sizeof(req->local_gid)); | |
1087 | req->has_gid = true; | |
1088 | req->service_id = req_param->primary_path->service_id; | |
ab3964ad | 1089 | req->pkey = be16_to_cpu(req_param->primary_path->pkey); |
4c21b5bc HE |
1090 | break; |
1091 | case IB_CM_SIDR_REQ_RECEIVED: | |
1092 | req->device = sidr_param->listen_id->device; | |
1093 | req->port = sidr_param->port; | |
1094 | req->has_gid = false; | |
1095 | req->service_id = sidr_param->service_id; | |
ab3964ad | 1096 | req->pkey = sidr_param->pkey; |
4c21b5bc HE |
1097 | break; |
1098 | default: | |
1099 | return -EINVAL; | |
1100 | } | |
1101 | ||
1102 | return 0; | |
1103 | } | |
1104 | ||
f887f2ac HE |
1105 | static bool validate_ipv4_net_dev(struct net_device *net_dev, |
1106 | const struct sockaddr_in *dst_addr, | |
1107 | const struct sockaddr_in *src_addr) | |
1108 | { | |
1109 | __be32 daddr = dst_addr->sin_addr.s_addr, | |
1110 | saddr = src_addr->sin_addr.s_addr; | |
1111 | struct fib_result res; | |
1112 | struct flowi4 fl4; | |
1113 | int err; | |
1114 | bool ret; | |
1115 | ||
1116 | if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) || | |
1117 | ipv4_is_lbcast(daddr) || ipv4_is_zeronet(saddr) || | |
1118 | ipv4_is_zeronet(daddr) || ipv4_is_loopback(daddr) || | |
1119 | ipv4_is_loopback(saddr)) | |
1120 | return false; | |
1121 | ||
1122 | memset(&fl4, 0, sizeof(fl4)); | |
1123 | fl4.flowi4_iif = net_dev->ifindex; | |
1124 | fl4.daddr = daddr; | |
1125 | fl4.saddr = saddr; | |
1126 | ||
1127 | rcu_read_lock(); | |
1128 | err = fib_lookup(dev_net(net_dev), &fl4, &res, 0); | |
d3632493 | 1129 | ret = err == 0 && FIB_RES_DEV(res) == net_dev; |
f887f2ac HE |
1130 | rcu_read_unlock(); |
1131 | ||
1132 | return ret; | |
1133 | } | |
1134 | ||
1135 | static bool validate_ipv6_net_dev(struct net_device *net_dev, | |
1136 | const struct sockaddr_in6 *dst_addr, | |
1137 | const struct sockaddr_in6 *src_addr) | |
1138 | { | |
1139 | #if IS_ENABLED(CONFIG_IPV6) | |
1140 | const int strict = ipv6_addr_type(&dst_addr->sin6_addr) & | |
1141 | IPV6_ADDR_LINKLOCAL; | |
1142 | struct rt6_info *rt = rt6_lookup(dev_net(net_dev), &dst_addr->sin6_addr, | |
1143 | &src_addr->sin6_addr, net_dev->ifindex, | |
1144 | strict); | |
1145 | bool ret; | |
1146 | ||
1147 | if (!rt) | |
1148 | return false; | |
1149 | ||
1150 | ret = rt->rt6i_idev->dev == net_dev; | |
1151 | ip6_rt_put(rt); | |
1152 | ||
1153 | return ret; | |
1154 | #else | |
1155 | return false; | |
1156 | #endif | |
1157 | } | |
1158 | ||
1159 | static bool validate_net_dev(struct net_device *net_dev, | |
1160 | const struct sockaddr *daddr, | |
1161 | const struct sockaddr *saddr) | |
1162 | { | |
1163 | const struct sockaddr_in *daddr4 = (const struct sockaddr_in *)daddr; | |
1164 | const struct sockaddr_in *saddr4 = (const struct sockaddr_in *)saddr; | |
1165 | const struct sockaddr_in6 *daddr6 = (const struct sockaddr_in6 *)daddr; | |
1166 | const struct sockaddr_in6 *saddr6 = (const struct sockaddr_in6 *)saddr; | |
1167 | ||
1168 | switch (daddr->sa_family) { | |
1169 | case AF_INET: | |
1170 | return saddr->sa_family == AF_INET && | |
1171 | validate_ipv4_net_dev(net_dev, daddr4, saddr4); | |
1172 | ||
1173 | case AF_INET6: | |
1174 | return saddr->sa_family == AF_INET6 && | |
1175 | validate_ipv6_net_dev(net_dev, daddr6, saddr6); | |
1176 | ||
1177 | default: | |
1178 | return false; | |
1179 | } | |
1180 | } | |
1181 | ||
4c21b5bc HE |
1182 | static struct net_device *cma_get_net_dev(struct ib_cm_event *ib_event, |
1183 | const struct cma_req_info *req) | |
1184 | { | |
f887f2ac HE |
1185 | struct sockaddr_storage listen_addr_storage, src_addr_storage; |
1186 | struct sockaddr *listen_addr = (struct sockaddr *)&listen_addr_storage, | |
1187 | *src_addr = (struct sockaddr *)&src_addr_storage; | |
4c21b5bc HE |
1188 | struct net_device *net_dev; |
1189 | const union ib_gid *gid = req->has_gid ? &req->local_gid : NULL; | |
1190 | int err; | |
1191 | ||
f887f2ac HE |
1192 | err = cma_save_ip_info(listen_addr, src_addr, ib_event, |
1193 | req->service_id); | |
4c21b5bc HE |
1194 | if (err) |
1195 | return ERR_PTR(err); | |
1196 | ||
1197 | net_dev = ib_get_net_dev_by_params(req->device, req->port, req->pkey, | |
1198 | gid, listen_addr); | |
1199 | if (!net_dev) | |
1200 | return ERR_PTR(-ENODEV); | |
1201 | ||
f887f2ac HE |
1202 | if (!validate_net_dev(net_dev, listen_addr, src_addr)) { |
1203 | dev_put(net_dev); | |
1204 | return ERR_PTR(-EHOSTUNREACH); | |
1205 | } | |
1206 | ||
4c21b5bc HE |
1207 | return net_dev; |
1208 | } | |
1209 | ||
1210 | static enum rdma_port_space rdma_ps_from_service_id(__be64 service_id) | |
1211 | { | |
1212 | return (be64_to_cpu(service_id) >> 16) & 0xffff; | |
1213 | } | |
1214 | ||
1215 | static bool cma_match_private_data(struct rdma_id_private *id_priv, | |
1216 | const struct cma_hdr *hdr) | |
1217 | { | |
1218 | struct sockaddr *addr = cma_src_addr(id_priv); | |
1219 | __be32 ip4_addr; | |
1220 | struct in6_addr ip6_addr; | |
1221 | ||
1222 | if (cma_any_addr(addr) && !id_priv->afonly) | |
1223 | return true; | |
1224 | ||
1225 | switch (addr->sa_family) { | |
1226 | case AF_INET: | |
1227 | ip4_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; | |
1228 | if (cma_get_ip_ver(hdr) != 4) | |
1229 | return false; | |
1230 | if (!cma_any_addr(addr) && | |
1231 | hdr->dst_addr.ip4.addr != ip4_addr) | |
1232 | return false; | |
1233 | break; | |
1234 | case AF_INET6: | |
1235 | ip6_addr = ((struct sockaddr_in6 *)addr)->sin6_addr; | |
1236 | if (cma_get_ip_ver(hdr) != 6) | |
1237 | return false; | |
1238 | if (!cma_any_addr(addr) && | |
1239 | memcmp(&hdr->dst_addr.ip6, &ip6_addr, sizeof(ip6_addr))) | |
1240 | return false; | |
1241 | break; | |
1242 | case AF_IB: | |
1243 | return true; | |
1244 | default: | |
1245 | return false; | |
1246 | } | |
1247 | ||
1248 | return true; | |
1249 | } | |
1250 | ||
b8cab5da HE |
1251 | static bool cma_protocol_roce_dev_port(struct ib_device *device, int port_num) |
1252 | { | |
1253 | enum rdma_link_layer ll = rdma_port_get_link_layer(device, port_num); | |
1254 | enum rdma_transport_type transport = | |
1255 | rdma_node_get_transport(device->node_type); | |
1256 | ||
1257 | return ll == IB_LINK_LAYER_ETHERNET && transport == RDMA_TRANSPORT_IB; | |
1258 | } | |
1259 | ||
1260 | static bool cma_protocol_roce(const struct rdma_cm_id *id) | |
1261 | { | |
1262 | struct ib_device *device = id->device; | |
1263 | const int port_num = id->port_num ?: rdma_start_port(device); | |
1264 | ||
1265 | return cma_protocol_roce_dev_port(device, port_num); | |
1266 | } | |
1267 | ||
fac51590 MB |
1268 | static bool cma_match_net_dev(const struct rdma_cm_id *id, |
1269 | const struct net_device *net_dev, | |
1270 | u8 port_num) | |
4c21b5bc | 1271 | { |
fac51590 | 1272 | const struct rdma_addr *addr = &id->route.addr; |
4c21b5bc HE |
1273 | |
1274 | if (!net_dev) | |
b8cab5da | 1275 | /* This request is an AF_IB request or a RoCE request */ |
fac51590 MB |
1276 | return (!id->port_num || id->port_num == port_num) && |
1277 | (addr->src_addr.ss_family == AF_IB || | |
1278 | cma_protocol_roce_dev_port(id->device, port_num)); | |
4c21b5bc HE |
1279 | |
1280 | return !addr->dev_addr.bound_dev_if || | |
fa20105e | 1281 | (net_eq(dev_net(net_dev), addr->dev_addr.net) && |
4c21b5bc HE |
1282 | addr->dev_addr.bound_dev_if == net_dev->ifindex); |
1283 | } | |
1284 | ||
1285 | static struct rdma_id_private *cma_find_listener( | |
1286 | const struct rdma_bind_list *bind_list, | |
1287 | const struct ib_cm_id *cm_id, | |
1288 | const struct ib_cm_event *ib_event, | |
1289 | const struct cma_req_info *req, | |
1290 | const struct net_device *net_dev) | |
1291 | { | |
1292 | struct rdma_id_private *id_priv, *id_priv_dev; | |
1293 | ||
1294 | if (!bind_list) | |
1295 | return ERR_PTR(-EINVAL); | |
1296 | ||
1297 | hlist_for_each_entry(id_priv, &bind_list->owners, node) { | |
1298 | if (cma_match_private_data(id_priv, ib_event->private_data)) { | |
1299 | if (id_priv->id.device == cm_id->device && | |
fac51590 | 1300 | cma_match_net_dev(&id_priv->id, net_dev, req->port)) |
4c21b5bc HE |
1301 | return id_priv; |
1302 | list_for_each_entry(id_priv_dev, | |
1303 | &id_priv->listen_list, | |
1304 | listen_list) { | |
1305 | if (id_priv_dev->id.device == cm_id->device && | |
fac51590 | 1306 | cma_match_net_dev(&id_priv_dev->id, net_dev, req->port)) |
4c21b5bc HE |
1307 | return id_priv_dev; |
1308 | } | |
1309 | } | |
1310 | } | |
1311 | ||
1312 | return ERR_PTR(-EINVAL); | |
1313 | } | |
1314 | ||
1315 | static struct rdma_id_private *cma_id_from_event(struct ib_cm_id *cm_id, | |
0b3ca768 HE |
1316 | struct ib_cm_event *ib_event, |
1317 | struct net_device **net_dev) | |
4c21b5bc HE |
1318 | { |
1319 | struct cma_req_info req; | |
1320 | struct rdma_bind_list *bind_list; | |
1321 | struct rdma_id_private *id_priv; | |
4c21b5bc HE |
1322 | int err; |
1323 | ||
1324 | err = cma_save_req_info(ib_event, &req); | |
1325 | if (err) | |
1326 | return ERR_PTR(err); | |
1327 | ||
0b3ca768 HE |
1328 | *net_dev = cma_get_net_dev(ib_event, &req); |
1329 | if (IS_ERR(*net_dev)) { | |
1330 | if (PTR_ERR(*net_dev) == -EAFNOSUPPORT) { | |
4c21b5bc | 1331 | /* Assuming the protocol is AF_IB */ |
0b3ca768 | 1332 | *net_dev = NULL; |
b8cab5da HE |
1333 | } else if (cma_protocol_roce_dev_port(req.device, req.port)) { |
1334 | /* TODO find the net dev matching the request parameters | |
1335 | * through the RoCE GID table */ | |
1336 | *net_dev = NULL; | |
4c21b5bc | 1337 | } else { |
0b3ca768 | 1338 | return ERR_CAST(*net_dev); |
4c21b5bc HE |
1339 | } |
1340 | } | |
1341 | ||
fa20105e | 1342 | bind_list = cma_ps_find(*net_dev ? dev_net(*net_dev) : &init_net, |
4be74b42 | 1343 | rdma_ps_from_service_id(req.service_id), |
4c21b5bc | 1344 | cma_port_from_service_id(req.service_id)); |
0b3ca768 | 1345 | id_priv = cma_find_listener(bind_list, cm_id, ib_event, &req, *net_dev); |
b3b51f9f | 1346 | if (IS_ERR(id_priv) && *net_dev) { |
be688195 HE |
1347 | dev_put(*net_dev); |
1348 | *net_dev = NULL; | |
1349 | } | |
4c21b5bc HE |
1350 | |
1351 | return id_priv; | |
1352 | } | |
1353 | ||
e8160e15 | 1354 | static inline int cma_user_data_offset(struct rdma_id_private *id_priv) |
e51060f0 | 1355 | { |
e8160e15 | 1356 | return cma_family(id_priv) == AF_IB ? 0 : sizeof(struct cma_hdr); |
e51060f0 SH |
1357 | } |
1358 | ||
e51060f0 SH |
1359 | static void cma_cancel_route(struct rdma_id_private *id_priv) |
1360 | { | |
fe53ba2f | 1361 | if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) { |
e51060f0 SH |
1362 | if (id_priv->query) |
1363 | ib_sa_cancel_query(id_priv->query_id, id_priv->query); | |
e51060f0 SH |
1364 | } |
1365 | } | |
1366 | ||
e51060f0 SH |
1367 | static void cma_cancel_listens(struct rdma_id_private *id_priv) |
1368 | { | |
1369 | struct rdma_id_private *dev_id_priv; | |
1370 | ||
d02d1f53 SH |
1371 | /* |
1372 | * Remove from listen_any_list to prevent added devices from spawning | |
1373 | * additional listen requests. | |
1374 | */ | |
e51060f0 SH |
1375 | mutex_lock(&lock); |
1376 | list_del(&id_priv->list); | |
1377 | ||
1378 | while (!list_empty(&id_priv->listen_list)) { | |
1379 | dev_id_priv = list_entry(id_priv->listen_list.next, | |
1380 | struct rdma_id_private, listen_list); | |
d02d1f53 SH |
1381 | /* sync with device removal to avoid duplicate destruction */ |
1382 | list_del_init(&dev_id_priv->list); | |
1383 | list_del(&dev_id_priv->listen_list); | |
1384 | mutex_unlock(&lock); | |
1385 | ||
1386 | rdma_destroy_id(&dev_id_priv->id); | |
1387 | mutex_lock(&lock); | |
e51060f0 SH |
1388 | } |
1389 | mutex_unlock(&lock); | |
1390 | } | |
1391 | ||
1392 | static void cma_cancel_operation(struct rdma_id_private *id_priv, | |
550e5ca7 | 1393 | enum rdma_cm_state state) |
e51060f0 SH |
1394 | { |
1395 | switch (state) { | |
550e5ca7 | 1396 | case RDMA_CM_ADDR_QUERY: |
e51060f0 SH |
1397 | rdma_addr_cancel(&id_priv->id.route.addr.dev_addr); |
1398 | break; | |
550e5ca7 | 1399 | case RDMA_CM_ROUTE_QUERY: |
e51060f0 SH |
1400 | cma_cancel_route(id_priv); |
1401 | break; | |
550e5ca7 | 1402 | case RDMA_CM_LISTEN: |
f4753834 | 1403 | if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) |
e51060f0 SH |
1404 | cma_cancel_listens(id_priv); |
1405 | break; | |
1406 | default: | |
1407 | break; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | static void cma_release_port(struct rdma_id_private *id_priv) | |
1412 | { | |
1413 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
fa20105e | 1414 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
1415 | |
1416 | if (!bind_list) | |
1417 | return; | |
1418 | ||
1419 | mutex_lock(&lock); | |
1420 | hlist_del(&id_priv->node); | |
1421 | if (hlist_empty(&bind_list->owners)) { | |
fa20105e | 1422 | cma_ps_remove(net, bind_list->ps, bind_list->port); |
e51060f0 SH |
1423 | kfree(bind_list); |
1424 | } | |
1425 | mutex_unlock(&lock); | |
1426 | } | |
1427 | ||
c8f6a362 SH |
1428 | static void cma_leave_mc_groups(struct rdma_id_private *id_priv) |
1429 | { | |
1430 | struct cma_multicast *mc; | |
1431 | ||
1432 | while (!list_empty(&id_priv->mc_list)) { | |
1433 | mc = container_of(id_priv->mc_list.next, | |
1434 | struct cma_multicast, list); | |
1435 | list_del(&mc->list); | |
a31ad3b0 | 1436 | if (rdma_cap_ib_mcast(id_priv->cma_dev->device, |
5c9a5282 | 1437 | id_priv->id.port_num)) { |
3c86aa70 EC |
1438 | ib_sa_free_multicast(mc->multicast.ib); |
1439 | kfree(mc); | |
5c9a5282 | 1440 | } else |
3c86aa70 | 1441 | kref_put(&mc->mcref, release_mc); |
c8f6a362 SH |
1442 | } |
1443 | } | |
1444 | ||
e51060f0 SH |
1445 | void rdma_destroy_id(struct rdma_cm_id *id) |
1446 | { | |
1447 | struct rdma_id_private *id_priv; | |
550e5ca7 | 1448 | enum rdma_cm_state state; |
e51060f0 SH |
1449 | |
1450 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 1451 | state = cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
1452 | cma_cancel_operation(id_priv, state); |
1453 | ||
a396d43a SH |
1454 | /* |
1455 | * Wait for any active callback to finish. New callbacks will find | |
1456 | * the id_priv state set to destroying and abort. | |
1457 | */ | |
1458 | mutex_lock(&id_priv->handler_mutex); | |
1459 | mutex_unlock(&id_priv->handler_mutex); | |
1460 | ||
e51060f0 | 1461 | if (id_priv->cma_dev) { |
72219cea | 1462 | if (rdma_cap_ib_cm(id_priv->id.device, 1)) { |
0c9361fc | 1463 | if (id_priv->cm_id.ib) |
e51060f0 | 1464 | ib_destroy_cm_id(id_priv->cm_id.ib); |
04215330 | 1465 | } else if (rdma_cap_iw_cm(id_priv->id.device, 1)) { |
0c9361fc | 1466 | if (id_priv->cm_id.iw) |
07ebafba | 1467 | iw_destroy_cm_id(id_priv->cm_id.iw); |
e51060f0 | 1468 | } |
c8f6a362 | 1469 | cma_leave_mc_groups(id_priv); |
a396d43a | 1470 | cma_release_dev(id_priv); |
e51060f0 SH |
1471 | } |
1472 | ||
1473 | cma_release_port(id_priv); | |
1474 | cma_deref_id(id_priv); | |
1475 | wait_for_completion(&id_priv->comp); | |
1476 | ||
d02d1f53 SH |
1477 | if (id_priv->internal_id) |
1478 | cma_deref_id(id_priv->id.context); | |
1479 | ||
e51060f0 | 1480 | kfree(id_priv->id.route.path_rec); |
fa20105e | 1481 | put_net(id_priv->id.route.addr.dev_addr.net); |
e51060f0 SH |
1482 | kfree(id_priv); |
1483 | } | |
1484 | EXPORT_SYMBOL(rdma_destroy_id); | |
1485 | ||
1486 | static int cma_rep_recv(struct rdma_id_private *id_priv) | |
1487 | { | |
1488 | int ret; | |
1489 | ||
5851bb89 | 1490 | ret = cma_modify_qp_rtr(id_priv, NULL); |
e51060f0 SH |
1491 | if (ret) |
1492 | goto reject; | |
1493 | ||
5851bb89 | 1494 | ret = cma_modify_qp_rts(id_priv, NULL); |
e51060f0 SH |
1495 | if (ret) |
1496 | goto reject; | |
1497 | ||
1498 | ret = ib_send_cm_rtu(id_priv->cm_id.ib, NULL, 0); | |
1499 | if (ret) | |
1500 | goto reject; | |
1501 | ||
1502 | return 0; | |
1503 | reject: | |
c5483388 | 1504 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
1505 | ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED, |
1506 | NULL, 0, NULL, 0); | |
1507 | return ret; | |
1508 | } | |
1509 | ||
a1b1b61f SH |
1510 | static void cma_set_rep_event_data(struct rdma_cm_event *event, |
1511 | struct ib_cm_rep_event_param *rep_data, | |
1512 | void *private_data) | |
1513 | { | |
1514 | event->param.conn.private_data = private_data; | |
1515 | event->param.conn.private_data_len = IB_CM_REP_PRIVATE_DATA_SIZE; | |
1516 | event->param.conn.responder_resources = rep_data->responder_resources; | |
1517 | event->param.conn.initiator_depth = rep_data->initiator_depth; | |
1518 | event->param.conn.flow_control = rep_data->flow_control; | |
1519 | event->param.conn.rnr_retry_count = rep_data->rnr_retry_count; | |
1520 | event->param.conn.srq = rep_data->srq; | |
1521 | event->param.conn.qp_num = rep_data->remote_qpn; | |
1522 | } | |
1523 | ||
e51060f0 SH |
1524 | static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1525 | { | |
1526 | struct rdma_id_private *id_priv = cm_id->context; | |
a1b1b61f SH |
1527 | struct rdma_cm_event event; |
1528 | int ret = 0; | |
e51060f0 | 1529 | |
38ca83a5 | 1530 | if ((ib_event->event != IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1531 | cma_disable_callback(id_priv, RDMA_CM_CONNECT)) || |
38ca83a5 | 1532 | (ib_event->event == IB_CM_TIMEWAIT_EXIT && |
550e5ca7 | 1533 | cma_disable_callback(id_priv, RDMA_CM_DISCONNECT))) |
8aa08602 | 1534 | return 0; |
e51060f0 | 1535 | |
a1b1b61f | 1536 | memset(&event, 0, sizeof event); |
e51060f0 SH |
1537 | switch (ib_event->event) { |
1538 | case IB_CM_REQ_ERROR: | |
1539 | case IB_CM_REP_ERROR: | |
a1b1b61f SH |
1540 | event.event = RDMA_CM_EVENT_UNREACHABLE; |
1541 | event.status = -ETIMEDOUT; | |
e51060f0 SH |
1542 | break; |
1543 | case IB_CM_REP_RECEIVED: | |
01602f11 | 1544 | if (id_priv->id.qp) { |
a1b1b61f SH |
1545 | event.status = cma_rep_recv(id_priv); |
1546 | event.event = event.status ? RDMA_CM_EVENT_CONNECT_ERROR : | |
1547 | RDMA_CM_EVENT_ESTABLISHED; | |
01602f11 | 1548 | } else { |
a1b1b61f | 1549 | event.event = RDMA_CM_EVENT_CONNECT_RESPONSE; |
01602f11 | 1550 | } |
a1b1b61f SH |
1551 | cma_set_rep_event_data(&event, &ib_event->param.rep_rcvd, |
1552 | ib_event->private_data); | |
e51060f0 SH |
1553 | break; |
1554 | case IB_CM_RTU_RECEIVED: | |
0fe313b0 SH |
1555 | case IB_CM_USER_ESTABLISHED: |
1556 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
e51060f0 SH |
1557 | break; |
1558 | case IB_CM_DREQ_ERROR: | |
a1b1b61f | 1559 | event.status = -ETIMEDOUT; /* fall through */ |
e51060f0 SH |
1560 | case IB_CM_DREQ_RECEIVED: |
1561 | case IB_CM_DREP_RECEIVED: | |
550e5ca7 NM |
1562 | if (!cma_comp_exch(id_priv, RDMA_CM_CONNECT, |
1563 | RDMA_CM_DISCONNECT)) | |
e51060f0 | 1564 | goto out; |
a1b1b61f | 1565 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
e51060f0 SH |
1566 | break; |
1567 | case IB_CM_TIMEWAIT_EXIT: | |
38ca83a5 AV |
1568 | event.event = RDMA_CM_EVENT_TIMEWAIT_EXIT; |
1569 | break; | |
e51060f0 SH |
1570 | case IB_CM_MRA_RECEIVED: |
1571 | /* ignore event */ | |
1572 | goto out; | |
1573 | case IB_CM_REJ_RECEIVED: | |
c5483388 | 1574 | cma_modify_qp_err(id_priv); |
a1b1b61f SH |
1575 | event.status = ib_event->param.rej_rcvd.reason; |
1576 | event.event = RDMA_CM_EVENT_REJECTED; | |
1577 | event.param.conn.private_data = ib_event->private_data; | |
1578 | event.param.conn.private_data_len = IB_CM_REJ_PRIVATE_DATA_SIZE; | |
e51060f0 SH |
1579 | break; |
1580 | default: | |
468f2239 | 1581 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
e51060f0 SH |
1582 | ib_event->event); |
1583 | goto out; | |
1584 | } | |
1585 | ||
a1b1b61f | 1586 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
e51060f0 SH |
1587 | if (ret) { |
1588 | /* Destroy the CM ID by returning a non-zero value. */ | |
1589 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 1590 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1591 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1592 | rdma_destroy_id(&id_priv->id); |
1593 | return ret; | |
1594 | } | |
1595 | out: | |
de910bd9 | 1596 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
1597 | return ret; |
1598 | } | |
1599 | ||
628e5f6d | 1600 | static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, |
0b3ca768 HE |
1601 | struct ib_cm_event *ib_event, |
1602 | struct net_device *net_dev) | |
e51060f0 SH |
1603 | { |
1604 | struct rdma_id_private *id_priv; | |
1605 | struct rdma_cm_id *id; | |
1606 | struct rdma_route *rt; | |
0c505f70 HE |
1607 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
1608 | const __be64 service_id = | |
1609 | ib_event->param.req_rcvd.primary_path->service_id; | |
64c5e613 | 1610 | int ret; |
e51060f0 | 1611 | |
fa20105e GS |
1612 | id = rdma_create_id(listen_id->route.addr.dev_addr.net, |
1613 | listen_id->event_handler, listen_id->context, | |
b26f9b99 | 1614 | listen_id->ps, ib_event->param.req_rcvd.qp_type); |
e51060f0 | 1615 | if (IS_ERR(id)) |
0c9361fc | 1616 | return NULL; |
3f168d2b | 1617 | |
f4753834 | 1618 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
1619 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
1620 | (struct sockaddr *)&id->route.addr.dst_addr, | |
1621 | listen_id, ib_event, ss_family, service_id)) | |
fbaa1a6d | 1622 | goto err; |
e51060f0 SH |
1623 | |
1624 | rt = &id->route; | |
1625 | rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; | |
3f168d2b KK |
1626 | rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, |
1627 | GFP_KERNEL); | |
e51060f0 | 1628 | if (!rt->path_rec) |
0c9361fc | 1629 | goto err; |
e51060f0 | 1630 | |
e51060f0 SH |
1631 | rt->path_rec[0] = *ib_event->param.req_rcvd.primary_path; |
1632 | if (rt->num_paths == 2) | |
1633 | rt->path_rec[1] = *ib_event->param.req_rcvd.alternate_path; | |
1634 | ||
0b3ca768 HE |
1635 | if (net_dev) { |
1636 | ret = rdma_copy_addr(&rt->addr.dev_addr, net_dev, NULL); | |
6f8372b6 | 1637 | if (ret) |
0c9361fc | 1638 | goto err; |
0b3ca768 | 1639 | } else { |
b8cab5da HE |
1640 | if (!cma_protocol_roce(listen_id) && |
1641 | cma_any_addr(cma_src_addr(id_priv))) { | |
1642 | rt->addr.dev_addr.dev_type = ARPHRD_INFINIBAND; | |
1643 | rdma_addr_set_sgid(&rt->addr.dev_addr, &rt->path_rec[0].sgid); | |
1644 | ib_addr_set_pkey(&rt->addr.dev_addr, be16_to_cpu(rt->path_rec[0].pkey)); | |
1645 | } else if (!cma_any_addr(cma_src_addr(id_priv))) { | |
1646 | ret = cma_translate_addr(cma_src_addr(id_priv), &rt->addr.dev_addr); | |
1647 | if (ret) | |
1648 | goto err; | |
1649 | } | |
6f8372b6 SH |
1650 | } |
1651 | rdma_addr_set_dgid(&rt->addr.dev_addr, &rt->path_rec[0].dgid); | |
e51060f0 | 1652 | |
550e5ca7 | 1653 | id_priv->state = RDMA_CM_CONNECT; |
e51060f0 | 1654 | return id_priv; |
3f168d2b | 1655 | |
3f168d2b | 1656 | err: |
0c9361fc | 1657 | rdma_destroy_id(id); |
e51060f0 SH |
1658 | return NULL; |
1659 | } | |
1660 | ||
628e5f6d | 1661 | static struct rdma_id_private *cma_new_udp_id(struct rdma_cm_id *listen_id, |
0b3ca768 HE |
1662 | struct ib_cm_event *ib_event, |
1663 | struct net_device *net_dev) | |
628e5f6d SH |
1664 | { |
1665 | struct rdma_id_private *id_priv; | |
1666 | struct rdma_cm_id *id; | |
0c505f70 | 1667 | const sa_family_t ss_family = listen_id->route.addr.src_addr.ss_family; |
fa20105e | 1668 | struct net *net = listen_id->route.addr.dev_addr.net; |
628e5f6d SH |
1669 | int ret; |
1670 | ||
fa20105e | 1671 | id = rdma_create_id(net, listen_id->event_handler, listen_id->context, |
b26f9b99 | 1672 | listen_id->ps, IB_QPT_UD); |
628e5f6d SH |
1673 | if (IS_ERR(id)) |
1674 | return NULL; | |
1675 | ||
f4753834 | 1676 | id_priv = container_of(id, struct rdma_id_private, id); |
0c505f70 HE |
1677 | if (cma_save_net_info((struct sockaddr *)&id->route.addr.src_addr, |
1678 | (struct sockaddr *)&id->route.addr.dst_addr, | |
1679 | listen_id, ib_event, ss_family, | |
1680 | ib_event->param.sidr_req_rcvd.service_id)) | |
628e5f6d SH |
1681 | goto err; |
1682 | ||
0b3ca768 HE |
1683 | if (net_dev) { |
1684 | ret = rdma_copy_addr(&id->route.addr.dev_addr, net_dev, NULL); | |
6f8372b6 SH |
1685 | if (ret) |
1686 | goto err; | |
0b3ca768 | 1687 | } else { |
b8cab5da HE |
1688 | if (!cma_any_addr(cma_src_addr(id_priv))) { |
1689 | ret = cma_translate_addr(cma_src_addr(id_priv), | |
1690 | &id->route.addr.dev_addr); | |
1691 | if (ret) | |
1692 | goto err; | |
1693 | } | |
6f8372b6 | 1694 | } |
628e5f6d | 1695 | |
550e5ca7 | 1696 | id_priv->state = RDMA_CM_CONNECT; |
628e5f6d SH |
1697 | return id_priv; |
1698 | err: | |
1699 | rdma_destroy_id(id); | |
1700 | return NULL; | |
1701 | } | |
1702 | ||
a1b1b61f SH |
1703 | static void cma_set_req_event_data(struct rdma_cm_event *event, |
1704 | struct ib_cm_req_event_param *req_data, | |
1705 | void *private_data, int offset) | |
1706 | { | |
1707 | event->param.conn.private_data = private_data + offset; | |
1708 | event->param.conn.private_data_len = IB_CM_REQ_PRIVATE_DATA_SIZE - offset; | |
1709 | event->param.conn.responder_resources = req_data->responder_resources; | |
1710 | event->param.conn.initiator_depth = req_data->initiator_depth; | |
1711 | event->param.conn.flow_control = req_data->flow_control; | |
1712 | event->param.conn.retry_count = req_data->retry_count; | |
1713 | event->param.conn.rnr_retry_count = req_data->rnr_retry_count; | |
1714 | event->param.conn.srq = req_data->srq; | |
1715 | event->param.conn.qp_num = req_data->remote_qpn; | |
1716 | } | |
1717 | ||
9595480c HS |
1718 | static int cma_check_req_qp_type(struct rdma_cm_id *id, struct ib_cm_event *ib_event) |
1719 | { | |
4dd81e89 | 1720 | return (((ib_event->event == IB_CM_REQ_RECEIVED) && |
9595480c HS |
1721 | (ib_event->param.req_rcvd.qp_type == id->qp_type)) || |
1722 | ((ib_event->event == IB_CM_SIDR_REQ_RECEIVED) && | |
1723 | (id->qp_type == IB_QPT_UD)) || | |
1724 | (!id->qp_type)); | |
1725 | } | |
1726 | ||
e51060f0 SH |
1727 | static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event) |
1728 | { | |
1729 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1730 | struct rdma_cm_event event; |
0b3ca768 | 1731 | struct net_device *net_dev; |
e51060f0 SH |
1732 | int offset, ret; |
1733 | ||
0b3ca768 | 1734 | listen_id = cma_id_from_event(cm_id, ib_event, &net_dev); |
4c21b5bc HE |
1735 | if (IS_ERR(listen_id)) |
1736 | return PTR_ERR(listen_id); | |
1737 | ||
0b3ca768 HE |
1738 | if (!cma_check_req_qp_type(&listen_id->id, ib_event)) { |
1739 | ret = -EINVAL; | |
1740 | goto net_dev_put; | |
1741 | } | |
9595480c | 1742 | |
0b3ca768 HE |
1743 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) { |
1744 | ret = -ECONNABORTED; | |
1745 | goto net_dev_put; | |
1746 | } | |
e51060f0 | 1747 | |
628e5f6d | 1748 | memset(&event, 0, sizeof event); |
e8160e15 | 1749 | offset = cma_user_data_offset(listen_id); |
628e5f6d | 1750 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; |
9595480c | 1751 | if (ib_event->event == IB_CM_SIDR_REQ_RECEIVED) { |
0b3ca768 | 1752 | conn_id = cma_new_udp_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
1753 | event.param.ud.private_data = ib_event->private_data + offset; |
1754 | event.param.ud.private_data_len = | |
1755 | IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset; | |
1756 | } else { | |
0b3ca768 | 1757 | conn_id = cma_new_conn_id(&listen_id->id, ib_event, net_dev); |
628e5f6d SH |
1758 | cma_set_req_event_data(&event, &ib_event->param.req_rcvd, |
1759 | ib_event->private_data, offset); | |
1760 | } | |
e51060f0 SH |
1761 | if (!conn_id) { |
1762 | ret = -ENOMEM; | |
b6cec8aa | 1763 | goto err1; |
e51060f0 SH |
1764 | } |
1765 | ||
de910bd9 | 1766 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
be9130cc | 1767 | ret = cma_acquire_dev(conn_id, listen_id); |
a1a733f6 | 1768 | if (ret) |
b6cec8aa | 1769 | goto err2; |
e51060f0 SH |
1770 | |
1771 | conn_id->cm_id.ib = cm_id; | |
1772 | cm_id->context = conn_id; | |
1773 | cm_id->cm_handler = cma_ib_handler; | |
1774 | ||
25ae21a1 SH |
1775 | /* |
1776 | * Protect against the user destroying conn_id from another thread | |
1777 | * until we're done accessing it. | |
1778 | */ | |
1779 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1780 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
b6cec8aa SH |
1781 | if (ret) |
1782 | goto err3; | |
b6cec8aa SH |
1783 | /* |
1784 | * Acquire mutex to prevent user executing rdma_destroy_id() | |
1785 | * while we're accessing the cm_id. | |
1786 | */ | |
1787 | mutex_lock(&lock); | |
dd5f03be MB |
1788 | if (cma_comp(conn_id, RDMA_CM_CONNECT) && |
1789 | (conn_id->id.qp_type != IB_QPT_UD)) | |
b6cec8aa SH |
1790 | ib_send_cm_mra(cm_id, CMA_CM_MRA_SETTING, NULL, 0); |
1791 | mutex_unlock(&lock); | |
1792 | mutex_unlock(&conn_id->handler_mutex); | |
1793 | mutex_unlock(&listen_id->handler_mutex); | |
25ae21a1 | 1794 | cma_deref_id(conn_id); |
0b3ca768 HE |
1795 | if (net_dev) |
1796 | dev_put(net_dev); | |
b6cec8aa | 1797 | return 0; |
a1a733f6 | 1798 | |
b6cec8aa SH |
1799 | err3: |
1800 | cma_deref_id(conn_id); | |
a1a733f6 KK |
1801 | /* Destroy the CM ID by returning a non-zero value. */ |
1802 | conn_id->cm_id.ib = NULL; | |
b6cec8aa | 1803 | err2: |
550e5ca7 | 1804 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1805 | mutex_unlock(&conn_id->handler_mutex); |
b6cec8aa | 1806 | err1: |
de910bd9 | 1807 | mutex_unlock(&listen_id->handler_mutex); |
b6cec8aa SH |
1808 | if (conn_id) |
1809 | rdma_destroy_id(&conn_id->id); | |
0b3ca768 HE |
1810 | |
1811 | net_dev_put: | |
1812 | if (net_dev) | |
1813 | dev_put(net_dev); | |
1814 | ||
e51060f0 SH |
1815 | return ret; |
1816 | } | |
1817 | ||
cf53936f | 1818 | __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr) |
e51060f0 | 1819 | { |
496ce3ce SH |
1820 | if (addr->sa_family == AF_IB) |
1821 | return ((struct sockaddr_ib *) addr)->sib_sid; | |
1822 | ||
cf53936f | 1823 | return cpu_to_be64(((u64)id->ps << 16) + be16_to_cpu(cma_port(addr))); |
e51060f0 | 1824 | } |
cf53936f | 1825 | EXPORT_SYMBOL(rdma_get_service_id); |
e51060f0 | 1826 | |
07ebafba TT |
1827 | static int cma_iw_handler(struct iw_cm_id *iw_id, struct iw_cm_event *iw_event) |
1828 | { | |
1829 | struct rdma_id_private *id_priv = iw_id->context; | |
a1b1b61f | 1830 | struct rdma_cm_event event; |
07ebafba | 1831 | int ret = 0; |
24d44a39 SW |
1832 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
1833 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba | 1834 | |
550e5ca7 | 1835 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
be65f086 | 1836 | return 0; |
07ebafba | 1837 | |
be65f086 | 1838 | memset(&event, 0, sizeof event); |
07ebafba TT |
1839 | switch (iw_event->event) { |
1840 | case IW_CM_EVENT_CLOSE: | |
a1b1b61f | 1841 | event.event = RDMA_CM_EVENT_DISCONNECTED; |
07ebafba TT |
1842 | break; |
1843 | case IW_CM_EVENT_CONNECT_REPLY: | |
24d44a39 SW |
1844 | memcpy(cma_src_addr(id_priv), laddr, |
1845 | rdma_addr_size(laddr)); | |
1846 | memcpy(cma_dst_addr(id_priv), raddr, | |
1847 | rdma_addr_size(raddr)); | |
881a045f SW |
1848 | switch (iw_event->status) { |
1849 | case 0: | |
a1b1b61f | 1850 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1851 | event.param.conn.initiator_depth = iw_event->ird; |
1852 | event.param.conn.responder_resources = iw_event->ord; | |
881a045f SW |
1853 | break; |
1854 | case -ECONNRESET: | |
1855 | case -ECONNREFUSED: | |
1856 | event.event = RDMA_CM_EVENT_REJECTED; | |
1857 | break; | |
1858 | case -ETIMEDOUT: | |
1859 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
1860 | break; | |
1861 | default: | |
1862 | event.event = RDMA_CM_EVENT_CONNECT_ERROR; | |
1863 | break; | |
1864 | } | |
07ebafba TT |
1865 | break; |
1866 | case IW_CM_EVENT_ESTABLISHED: | |
a1b1b61f | 1867 | event.event = RDMA_CM_EVENT_ESTABLISHED; |
3ebeebc3 KS |
1868 | event.param.conn.initiator_depth = iw_event->ird; |
1869 | event.param.conn.responder_resources = iw_event->ord; | |
07ebafba TT |
1870 | break; |
1871 | default: | |
1872 | BUG_ON(1); | |
1873 | } | |
1874 | ||
a1b1b61f SH |
1875 | event.status = iw_event->status; |
1876 | event.param.conn.private_data = iw_event->private_data; | |
1877 | event.param.conn.private_data_len = iw_event->private_data_len; | |
1878 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
07ebafba TT |
1879 | if (ret) { |
1880 | /* Destroy the CM ID by returning a non-zero value. */ | |
1881 | id_priv->cm_id.iw = NULL; | |
550e5ca7 | 1882 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 1883 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1884 | rdma_destroy_id(&id_priv->id); |
1885 | return ret; | |
1886 | } | |
1887 | ||
de910bd9 | 1888 | mutex_unlock(&id_priv->handler_mutex); |
07ebafba TT |
1889 | return ret; |
1890 | } | |
1891 | ||
1892 | static int iw_conn_req_handler(struct iw_cm_id *cm_id, | |
1893 | struct iw_cm_event *iw_event) | |
1894 | { | |
1895 | struct rdma_cm_id *new_cm_id; | |
1896 | struct rdma_id_private *listen_id, *conn_id; | |
a1b1b61f | 1897 | struct rdma_cm_event event; |
07ebafba | 1898 | int ret; |
8d8293cf | 1899 | struct ib_device_attr attr; |
24d44a39 SW |
1900 | struct sockaddr *laddr = (struct sockaddr *)&iw_event->local_addr; |
1901 | struct sockaddr *raddr = (struct sockaddr *)&iw_event->remote_addr; | |
07ebafba TT |
1902 | |
1903 | listen_id = cm_id->context; | |
550e5ca7 | 1904 | if (cma_disable_callback(listen_id, RDMA_CM_LISTEN)) |
8aa08602 | 1905 | return -ECONNABORTED; |
07ebafba TT |
1906 | |
1907 | /* Create a new RDMA id for the new IW CM ID */ | |
fa20105e GS |
1908 | new_cm_id = rdma_create_id(listen_id->id.route.addr.dev_addr.net, |
1909 | listen_id->id.event_handler, | |
07ebafba | 1910 | listen_id->id.context, |
b26f9b99 | 1911 | RDMA_PS_TCP, IB_QPT_RC); |
10f32065 | 1912 | if (IS_ERR(new_cm_id)) { |
07ebafba TT |
1913 | ret = -ENOMEM; |
1914 | goto out; | |
1915 | } | |
1916 | conn_id = container_of(new_cm_id, struct rdma_id_private, id); | |
de910bd9 | 1917 | mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING); |
550e5ca7 | 1918 | conn_id->state = RDMA_CM_CONNECT; |
07ebafba | 1919 | |
dd5f03be | 1920 | ret = rdma_translate_ip(laddr, &conn_id->id.route.addr.dev_addr, NULL); |
07ebafba | 1921 | if (ret) { |
de910bd9 | 1922 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1923 | rdma_destroy_id(new_cm_id); |
1924 | goto out; | |
1925 | } | |
1926 | ||
be9130cc | 1927 | ret = cma_acquire_dev(conn_id, listen_id); |
07ebafba | 1928 | if (ret) { |
de910bd9 | 1929 | mutex_unlock(&conn_id->handler_mutex); |
07ebafba TT |
1930 | rdma_destroy_id(new_cm_id); |
1931 | goto out; | |
1932 | } | |
1933 | ||
1934 | conn_id->cm_id.iw = cm_id; | |
1935 | cm_id->context = conn_id; | |
1936 | cm_id->cm_handler = cma_iw_handler; | |
1937 | ||
24d44a39 SW |
1938 | memcpy(cma_src_addr(conn_id), laddr, rdma_addr_size(laddr)); |
1939 | memcpy(cma_dst_addr(conn_id), raddr, rdma_addr_size(raddr)); | |
07ebafba | 1940 | |
8d8293cf SW |
1941 | ret = ib_query_device(conn_id->id.device, &attr); |
1942 | if (ret) { | |
de910bd9 | 1943 | mutex_unlock(&conn_id->handler_mutex); |
8d8293cf SW |
1944 | rdma_destroy_id(new_cm_id); |
1945 | goto out; | |
1946 | } | |
1947 | ||
a1b1b61f SH |
1948 | memset(&event, 0, sizeof event); |
1949 | event.event = RDMA_CM_EVENT_CONNECT_REQUEST; | |
1950 | event.param.conn.private_data = iw_event->private_data; | |
1951 | event.param.conn.private_data_len = iw_event->private_data_len; | |
3ebeebc3 KS |
1952 | event.param.conn.initiator_depth = iw_event->ird; |
1953 | event.param.conn.responder_resources = iw_event->ord; | |
25ae21a1 SH |
1954 | |
1955 | /* | |
1956 | * Protect against the user destroying conn_id from another thread | |
1957 | * until we're done accessing it. | |
1958 | */ | |
1959 | atomic_inc(&conn_id->refcount); | |
a1b1b61f | 1960 | ret = conn_id->id.event_handler(&conn_id->id, &event); |
07ebafba TT |
1961 | if (ret) { |
1962 | /* User wants to destroy the CM ID */ | |
1963 | conn_id->cm_id.iw = NULL; | |
550e5ca7 | 1964 | cma_exch(conn_id, RDMA_CM_DESTROYING); |
de910bd9 | 1965 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1966 | cma_deref_id(conn_id); |
07ebafba | 1967 | rdma_destroy_id(&conn_id->id); |
de910bd9 | 1968 | goto out; |
07ebafba TT |
1969 | } |
1970 | ||
de910bd9 | 1971 | mutex_unlock(&conn_id->handler_mutex); |
25ae21a1 | 1972 | cma_deref_id(conn_id); |
de910bd9 | 1973 | |
07ebafba | 1974 | out: |
de910bd9 | 1975 | mutex_unlock(&listen_id->handler_mutex); |
07ebafba TT |
1976 | return ret; |
1977 | } | |
1978 | ||
e51060f0 SH |
1979 | static int cma_ib_listen(struct rdma_id_private *id_priv) |
1980 | { | |
e51060f0 | 1981 | struct sockaddr *addr; |
0c9361fc | 1982 | struct ib_cm_id *id; |
e51060f0 | 1983 | __be64 svc_id; |
e51060f0 | 1984 | |
51efe394 HE |
1985 | addr = cma_src_addr(id_priv); |
1986 | svc_id = rdma_get_service_id(&id_priv->id, addr); | |
1987 | id = ib_cm_insert_listen(id_priv->id.device, cma_req_handler, svc_id); | |
0c9361fc JM |
1988 | if (IS_ERR(id)) |
1989 | return PTR_ERR(id); | |
0c9361fc | 1990 | id_priv->cm_id.ib = id; |
e51060f0 | 1991 | |
51efe394 | 1992 | return 0; |
e51060f0 SH |
1993 | } |
1994 | ||
07ebafba TT |
1995 | static int cma_iw_listen(struct rdma_id_private *id_priv, int backlog) |
1996 | { | |
1997 | int ret; | |
0c9361fc JM |
1998 | struct iw_cm_id *id; |
1999 | ||
2000 | id = iw_create_cm_id(id_priv->id.device, | |
2001 | iw_conn_req_handler, | |
2002 | id_priv); | |
2003 | if (IS_ERR(id)) | |
2004 | return PTR_ERR(id); | |
07ebafba | 2005 | |
68cdba06 | 2006 | id->tos = id_priv->tos; |
0c9361fc | 2007 | id_priv->cm_id.iw = id; |
07ebafba | 2008 | |
24d44a39 SW |
2009 | memcpy(&id_priv->cm_id.iw->local_addr, cma_src_addr(id_priv), |
2010 | rdma_addr_size(cma_src_addr(id_priv))); | |
07ebafba TT |
2011 | |
2012 | ret = iw_cm_listen(id_priv->cm_id.iw, backlog); | |
2013 | ||
2014 | if (ret) { | |
2015 | iw_destroy_cm_id(id_priv->cm_id.iw); | |
2016 | id_priv->cm_id.iw = NULL; | |
2017 | } | |
2018 | ||
2019 | return ret; | |
2020 | } | |
2021 | ||
e51060f0 SH |
2022 | static int cma_listen_handler(struct rdma_cm_id *id, |
2023 | struct rdma_cm_event *event) | |
2024 | { | |
2025 | struct rdma_id_private *id_priv = id->context; | |
2026 | ||
2027 | id->context = id_priv->id.context; | |
2028 | id->event_handler = id_priv->id.event_handler; | |
2029 | return id_priv->id.event_handler(id, event); | |
2030 | } | |
2031 | ||
2032 | static void cma_listen_on_dev(struct rdma_id_private *id_priv, | |
2033 | struct cma_device *cma_dev) | |
2034 | { | |
2035 | struct rdma_id_private *dev_id_priv; | |
2036 | struct rdma_cm_id *id; | |
fa20105e | 2037 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 SH |
2038 | int ret; |
2039 | ||
72219cea | 2040 | if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1)) |
94d0c939 SH |
2041 | return; |
2042 | ||
fa20105e | 2043 | id = rdma_create_id(net, cma_listen_handler, id_priv, id_priv->id.ps, |
b26f9b99 | 2044 | id_priv->id.qp_type); |
e51060f0 SH |
2045 | if (IS_ERR(id)) |
2046 | return; | |
2047 | ||
2048 | dev_id_priv = container_of(id, struct rdma_id_private, id); | |
2049 | ||
550e5ca7 | 2050 | dev_id_priv->state = RDMA_CM_ADDR_BOUND; |
f4753834 SH |
2051 | memcpy(cma_src_addr(dev_id_priv), cma_src_addr(id_priv), |
2052 | rdma_addr_size(cma_src_addr(id_priv))); | |
e51060f0 SH |
2053 | |
2054 | cma_attach_to_dev(dev_id_priv, cma_dev); | |
2055 | list_add_tail(&dev_id_priv->listen_list, &id_priv->listen_list); | |
d02d1f53 SH |
2056 | atomic_inc(&id_priv->refcount); |
2057 | dev_id_priv->internal_id = 1; | |
5b0ec991 | 2058 | dev_id_priv->afonly = id_priv->afonly; |
e51060f0 SH |
2059 | |
2060 | ret = rdma_listen(id, id_priv->backlog); | |
2061 | if (ret) | |
d02d1f53 | 2062 | printk(KERN_WARNING "RDMA CMA: cma_listen_on_dev, error %d, " |
468f2239 | 2063 | "listening on device %s\n", ret, cma_dev->device->name); |
e51060f0 SH |
2064 | } |
2065 | ||
2066 | static void cma_listen_on_all(struct rdma_id_private *id_priv) | |
2067 | { | |
2068 | struct cma_device *cma_dev; | |
2069 | ||
2070 | mutex_lock(&lock); | |
2071 | list_add_tail(&id_priv->list, &listen_any_list); | |
2072 | list_for_each_entry(cma_dev, &dev_list, list) | |
2073 | cma_listen_on_dev(id_priv, cma_dev); | |
2074 | mutex_unlock(&lock); | |
2075 | } | |
2076 | ||
a81c994d SH |
2077 | void rdma_set_service_type(struct rdma_cm_id *id, int tos) |
2078 | { | |
2079 | struct rdma_id_private *id_priv; | |
2080 | ||
2081 | id_priv = container_of(id, struct rdma_id_private, id); | |
2082 | id_priv->tos = (u8) tos; | |
2083 | } | |
2084 | EXPORT_SYMBOL(rdma_set_service_type); | |
2085 | ||
e51060f0 SH |
2086 | static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec, |
2087 | void *context) | |
2088 | { | |
2089 | struct cma_work *work = context; | |
2090 | struct rdma_route *route; | |
2091 | ||
2092 | route = &work->id->id.route; | |
2093 | ||
2094 | if (!status) { | |
2095 | route->num_paths = 1; | |
2096 | *route->path_rec = *path_rec; | |
2097 | } else { | |
550e5ca7 NM |
2098 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2099 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 | 2100 | work->event.event = RDMA_CM_EVENT_ROUTE_ERROR; |
8f0472d3 | 2101 | work->event.status = status; |
e51060f0 SH |
2102 | } |
2103 | ||
2104 | queue_work(cma_wq, &work->work); | |
2105 | } | |
2106 | ||
2107 | static int cma_query_ib_route(struct rdma_id_private *id_priv, int timeout_ms, | |
2108 | struct cma_work *work) | |
2109 | { | |
f4753834 | 2110 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; |
e51060f0 | 2111 | struct ib_sa_path_rec path_rec; |
a81c994d SH |
2112 | ib_sa_comp_mask comp_mask; |
2113 | struct sockaddr_in6 *sin6; | |
f68194ca | 2114 | struct sockaddr_ib *sib; |
e51060f0 SH |
2115 | |
2116 | memset(&path_rec, 0, sizeof path_rec); | |
f4753834 SH |
2117 | rdma_addr_get_sgid(dev_addr, &path_rec.sgid); |
2118 | rdma_addr_get_dgid(dev_addr, &path_rec.dgid); | |
2119 | path_rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); | |
e51060f0 | 2120 | path_rec.numb_path = 1; |
962063e6 | 2121 | path_rec.reversible = 1; |
cf53936f | 2122 | path_rec.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
a81c994d SH |
2123 | |
2124 | comp_mask = IB_SA_PATH_REC_DGID | IB_SA_PATH_REC_SGID | | |
2125 | IB_SA_PATH_REC_PKEY | IB_SA_PATH_REC_NUMB_PATH | | |
2126 | IB_SA_PATH_REC_REVERSIBLE | IB_SA_PATH_REC_SERVICE_ID; | |
2127 | ||
f68194ca SH |
2128 | switch (cma_family(id_priv)) { |
2129 | case AF_INET: | |
a81c994d SH |
2130 | path_rec.qos_class = cpu_to_be16((u16) id_priv->tos); |
2131 | comp_mask |= IB_SA_PATH_REC_QOS_CLASS; | |
f68194ca SH |
2132 | break; |
2133 | case AF_INET6: | |
f4753834 | 2134 | sin6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
a81c994d SH |
2135 | path_rec.traffic_class = (u8) (be32_to_cpu(sin6->sin6_flowinfo) >> 20); |
2136 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
f68194ca SH |
2137 | break; |
2138 | case AF_IB: | |
2139 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); | |
2140 | path_rec.traffic_class = (u8) (be32_to_cpu(sib->sib_flowinfo) >> 20); | |
2141 | comp_mask |= IB_SA_PATH_REC_TRAFFIC_CLASS; | |
2142 | break; | |
a81c994d | 2143 | } |
e51060f0 | 2144 | |
c1a0b23b | 2145 | id_priv->query_id = ib_sa_path_rec_get(&sa_client, id_priv->id.device, |
a81c994d SH |
2146 | id_priv->id.port_num, &path_rec, |
2147 | comp_mask, timeout_ms, | |
2148 | GFP_KERNEL, cma_query_handler, | |
2149 | work, &id_priv->query); | |
e51060f0 SH |
2150 | |
2151 | return (id_priv->query_id < 0) ? id_priv->query_id : 0; | |
2152 | } | |
2153 | ||
c4028958 | 2154 | static void cma_work_handler(struct work_struct *_work) |
e51060f0 | 2155 | { |
c4028958 | 2156 | struct cma_work *work = container_of(_work, struct cma_work, work); |
e51060f0 SH |
2157 | struct rdma_id_private *id_priv = work->id; |
2158 | int destroy = 0; | |
2159 | ||
de910bd9 | 2160 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
2161 | if (!cma_comp_exch(id_priv, work->old_state, work->new_state)) |
2162 | goto out; | |
2163 | ||
2164 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2165 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
e51060f0 SH |
2166 | destroy = 1; |
2167 | } | |
2168 | out: | |
de910bd9 | 2169 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2170 | cma_deref_id(id_priv); |
2171 | if (destroy) | |
2172 | rdma_destroy_id(&id_priv->id); | |
2173 | kfree(work); | |
2174 | } | |
2175 | ||
dd5bdff8 OG |
2176 | static void cma_ndev_work_handler(struct work_struct *_work) |
2177 | { | |
2178 | struct cma_ndev_work *work = container_of(_work, struct cma_ndev_work, work); | |
2179 | struct rdma_id_private *id_priv = work->id; | |
2180 | int destroy = 0; | |
2181 | ||
2182 | mutex_lock(&id_priv->handler_mutex); | |
550e5ca7 NM |
2183 | if (id_priv->state == RDMA_CM_DESTROYING || |
2184 | id_priv->state == RDMA_CM_DEVICE_REMOVAL) | |
dd5bdff8 OG |
2185 | goto out; |
2186 | ||
2187 | if (id_priv->id.event_handler(&id_priv->id, &work->event)) { | |
550e5ca7 | 2188 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
dd5bdff8 OG |
2189 | destroy = 1; |
2190 | } | |
2191 | ||
2192 | out: | |
2193 | mutex_unlock(&id_priv->handler_mutex); | |
2194 | cma_deref_id(id_priv); | |
2195 | if (destroy) | |
2196 | rdma_destroy_id(&id_priv->id); | |
2197 | kfree(work); | |
2198 | } | |
2199 | ||
e51060f0 SH |
2200 | static int cma_resolve_ib_route(struct rdma_id_private *id_priv, int timeout_ms) |
2201 | { | |
2202 | struct rdma_route *route = &id_priv->id.route; | |
2203 | struct cma_work *work; | |
2204 | int ret; | |
2205 | ||
2206 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2207 | if (!work) | |
2208 | return -ENOMEM; | |
2209 | ||
2210 | work->id = id_priv; | |
c4028958 | 2211 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2212 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2213 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
e51060f0 SH |
2214 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2215 | ||
2216 | route->path_rec = kmalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2217 | if (!route->path_rec) { | |
2218 | ret = -ENOMEM; | |
2219 | goto err1; | |
2220 | } | |
2221 | ||
2222 | ret = cma_query_ib_route(id_priv, timeout_ms, work); | |
2223 | if (ret) | |
2224 | goto err2; | |
2225 | ||
2226 | return 0; | |
2227 | err2: | |
2228 | kfree(route->path_rec); | |
2229 | route->path_rec = NULL; | |
2230 | err1: | |
2231 | kfree(work); | |
2232 | return ret; | |
2233 | } | |
2234 | ||
2235 | int rdma_set_ib_paths(struct rdma_cm_id *id, | |
2236 | struct ib_sa_path_rec *path_rec, int num_paths) | |
2237 | { | |
2238 | struct rdma_id_private *id_priv; | |
2239 | int ret; | |
2240 | ||
2241 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
2242 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2243 | RDMA_CM_ROUTE_RESOLVED)) | |
e51060f0 SH |
2244 | return -EINVAL; |
2245 | ||
9893e742 JL |
2246 | id->route.path_rec = kmemdup(path_rec, sizeof *path_rec * num_paths, |
2247 | GFP_KERNEL); | |
e51060f0 SH |
2248 | if (!id->route.path_rec) { |
2249 | ret = -ENOMEM; | |
2250 | goto err; | |
2251 | } | |
2252 | ||
ae2d9293 | 2253 | id->route.num_paths = num_paths; |
e51060f0 SH |
2254 | return 0; |
2255 | err: | |
550e5ca7 | 2256 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2257 | return ret; |
2258 | } | |
2259 | EXPORT_SYMBOL(rdma_set_ib_paths); | |
2260 | ||
07ebafba TT |
2261 | static int cma_resolve_iw_route(struct rdma_id_private *id_priv, int timeout_ms) |
2262 | { | |
2263 | struct cma_work *work; | |
2264 | ||
2265 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2266 | if (!work) | |
2267 | return -ENOMEM; | |
2268 | ||
2269 | work->id = id_priv; | |
c4028958 | 2270 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2271 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2272 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
07ebafba TT |
2273 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2274 | queue_work(cma_wq, &work->work); | |
2275 | return 0; | |
2276 | } | |
2277 | ||
eb072c4b EP |
2278 | static int iboe_tos_to_sl(struct net_device *ndev, int tos) |
2279 | { | |
2280 | int prio; | |
2281 | struct net_device *dev; | |
2282 | ||
2283 | prio = rt_tos2priority(tos); | |
2284 | dev = ndev->priv_flags & IFF_802_1Q_VLAN ? | |
2285 | vlan_dev_real_dev(ndev) : ndev; | |
2286 | ||
2287 | if (dev->num_tc) | |
2288 | return netdev_get_prio_tc_map(dev, prio); | |
2289 | ||
2290 | #if IS_ENABLED(CONFIG_VLAN_8021Q) | |
2291 | if (ndev->priv_flags & IFF_802_1Q_VLAN) | |
2292 | return (vlan_dev_get_egress_qos_mask(ndev, prio) & | |
2293 | VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
2294 | #endif | |
2295 | return 0; | |
2296 | } | |
2297 | ||
3c86aa70 EC |
2298 | static int cma_resolve_iboe_route(struct rdma_id_private *id_priv) |
2299 | { | |
2300 | struct rdma_route *route = &id_priv->id.route; | |
2301 | struct rdma_addr *addr = &route->addr; | |
2302 | struct cma_work *work; | |
2303 | int ret; | |
3c86aa70 | 2304 | struct net_device *ndev = NULL; |
dd5f03be | 2305 | |
3c86aa70 | 2306 | |
3c86aa70 EC |
2307 | work = kzalloc(sizeof *work, GFP_KERNEL); |
2308 | if (!work) | |
2309 | return -ENOMEM; | |
2310 | ||
2311 | work->id = id_priv; | |
2312 | INIT_WORK(&work->work, cma_work_handler); | |
2313 | ||
2314 | route->path_rec = kzalloc(sizeof *route->path_rec, GFP_KERNEL); | |
2315 | if (!route->path_rec) { | |
2316 | ret = -ENOMEM; | |
2317 | goto err1; | |
2318 | } | |
2319 | ||
2320 | route->num_paths = 1; | |
2321 | ||
abae1b71 | 2322 | if (addr->dev_addr.bound_dev_if) { |
3c86aa70 | 2323 | ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if); |
abae1b71 MB |
2324 | route->path_rec->net = &init_net; |
2325 | route->path_rec->ifindex = addr->dev_addr.bound_dev_if; | |
2326 | } | |
3c86aa70 EC |
2327 | if (!ndev) { |
2328 | ret = -ENODEV; | |
2329 | goto err2; | |
2330 | } | |
2331 | ||
dd5f03be | 2332 | memcpy(route->path_rec->dmac, addr->dev_addr.dst_dev_addr, ETH_ALEN); |
af7bd463 | 2333 | |
7b85627b MS |
2334 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
2335 | &route->path_rec->sgid); | |
2336 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.dst_addr, | |
2337 | &route->path_rec->dgid); | |
af7bd463 EC |
2338 | |
2339 | route->path_rec->hop_limit = 1; | |
2340 | route->path_rec->reversible = 1; | |
2341 | route->path_rec->pkey = cpu_to_be16(0xffff); | |
2342 | route->path_rec->mtu_selector = IB_SA_EQ; | |
eb072c4b | 2343 | route->path_rec->sl = iboe_tos_to_sl(ndev, id_priv->tos); |
3c86aa70 EC |
2344 | route->path_rec->mtu = iboe_get_mtu(ndev->mtu); |
2345 | route->path_rec->rate_selector = IB_SA_EQ; | |
2346 | route->path_rec->rate = iboe_get_rate(ndev); | |
2347 | dev_put(ndev); | |
2348 | route->path_rec->packet_life_time_selector = IB_SA_EQ; | |
2349 | route->path_rec->packet_life_time = CMA_IBOE_PACKET_LIFETIME; | |
2350 | if (!route->path_rec->mtu) { | |
2351 | ret = -EINVAL; | |
2352 | goto err2; | |
2353 | } | |
2354 | ||
550e5ca7 NM |
2355 | work->old_state = RDMA_CM_ROUTE_QUERY; |
2356 | work->new_state = RDMA_CM_ROUTE_RESOLVED; | |
3c86aa70 EC |
2357 | work->event.event = RDMA_CM_EVENT_ROUTE_RESOLVED; |
2358 | work->event.status = 0; | |
2359 | ||
2360 | queue_work(cma_wq, &work->work); | |
2361 | ||
2362 | return 0; | |
2363 | ||
2364 | err2: | |
2365 | kfree(route->path_rec); | |
2366 | route->path_rec = NULL; | |
2367 | err1: | |
2368 | kfree(work); | |
2369 | return ret; | |
2370 | } | |
2371 | ||
e51060f0 SH |
2372 | int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms) |
2373 | { | |
2374 | struct rdma_id_private *id_priv; | |
2375 | int ret; | |
2376 | ||
2377 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2378 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, RDMA_CM_ROUTE_QUERY)) |
e51060f0 SH |
2379 | return -EINVAL; |
2380 | ||
2381 | atomic_inc(&id_priv->refcount); | |
fe53ba2f | 2382 | if (rdma_cap_ib_sa(id->device, id->port_num)) |
c72f2189 | 2383 | ret = cma_resolve_ib_route(id_priv, timeout_ms); |
5d9fb044 | 2384 | else if (rdma_protocol_roce(id->device, id->port_num)) |
c72f2189 MW |
2385 | ret = cma_resolve_iboe_route(id_priv); |
2386 | else if (rdma_protocol_iwarp(id->device, id->port_num)) | |
07ebafba | 2387 | ret = cma_resolve_iw_route(id_priv, timeout_ms); |
c72f2189 | 2388 | else |
e51060f0 | 2389 | ret = -ENOSYS; |
c72f2189 | 2390 | |
e51060f0 SH |
2391 | if (ret) |
2392 | goto err; | |
2393 | ||
2394 | return 0; | |
2395 | err: | |
550e5ca7 | 2396 | cma_comp_exch(id_priv, RDMA_CM_ROUTE_QUERY, RDMA_CM_ADDR_RESOLVED); |
e51060f0 SH |
2397 | cma_deref_id(id_priv); |
2398 | return ret; | |
2399 | } | |
2400 | EXPORT_SYMBOL(rdma_resolve_route); | |
2401 | ||
6a3e362d SH |
2402 | static void cma_set_loopback(struct sockaddr *addr) |
2403 | { | |
2404 | switch (addr->sa_family) { | |
2405 | case AF_INET: | |
2406 | ((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
2407 | break; | |
2408 | case AF_INET6: | |
2409 | ipv6_addr_set(&((struct sockaddr_in6 *) addr)->sin6_addr, | |
2410 | 0, 0, 0, htonl(1)); | |
2411 | break; | |
2412 | default: | |
2413 | ib_addr_set(&((struct sockaddr_ib *) addr)->sib_addr, | |
2414 | 0, 0, 0, htonl(1)); | |
2415 | break; | |
2416 | } | |
2417 | } | |
2418 | ||
e51060f0 SH |
2419 | static int cma_bind_loopback(struct rdma_id_private *id_priv) |
2420 | { | |
b0569e40 | 2421 | struct cma_device *cma_dev, *cur_dev; |
e51060f0 | 2422 | struct ib_port_attr port_attr; |
f0ee3404 | 2423 | union ib_gid gid; |
e51060f0 SH |
2424 | u16 pkey; |
2425 | int ret; | |
2426 | u8 p; | |
2427 | ||
b0569e40 | 2428 | cma_dev = NULL; |
e51060f0 | 2429 | mutex_lock(&lock); |
b0569e40 SH |
2430 | list_for_each_entry(cur_dev, &dev_list, list) { |
2431 | if (cma_family(id_priv) == AF_IB && | |
72219cea | 2432 | !rdma_cap_ib_cm(cur_dev->device, 1)) |
b0569e40 SH |
2433 | continue; |
2434 | ||
2435 | if (!cma_dev) | |
2436 | cma_dev = cur_dev; | |
2437 | ||
2438 | for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) { | |
2439 | if (!ib_query_port(cur_dev->device, p, &port_attr) && | |
2440 | port_attr.state == IB_PORT_ACTIVE) { | |
2441 | cma_dev = cur_dev; | |
2442 | goto port_found; | |
2443 | } | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | if (!cma_dev) { | |
e82153b5 KK |
2448 | ret = -ENODEV; |
2449 | goto out; | |
2450 | } | |
e51060f0 | 2451 | |
e82153b5 | 2452 | p = 1; |
e51060f0 SH |
2453 | |
2454 | port_found: | |
55ee3ab2 | 2455 | ret = ib_get_cached_gid(cma_dev->device, p, 0, &gid, NULL); |
e51060f0 SH |
2456 | if (ret) |
2457 | goto out; | |
2458 | ||
2459 | ret = ib_get_cached_pkey(cma_dev->device, p, 0, &pkey); | |
2460 | if (ret) | |
2461 | goto out; | |
2462 | ||
6f8372b6 | 2463 | id_priv->id.route.addr.dev_addr.dev_type = |
21655afc | 2464 | (rdma_protocol_ib(cma_dev->device, p)) ? |
6f8372b6 SH |
2465 | ARPHRD_INFINIBAND : ARPHRD_ETHER; |
2466 | ||
2467 | rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 SH |
2468 | ib_addr_set_pkey(&id_priv->id.route.addr.dev_addr, pkey); |
2469 | id_priv->id.port_num = p; | |
2470 | cma_attach_to_dev(id_priv, cma_dev); | |
f4753834 | 2471 | cma_set_loopback(cma_src_addr(id_priv)); |
e51060f0 SH |
2472 | out: |
2473 | mutex_unlock(&lock); | |
2474 | return ret; | |
2475 | } | |
2476 | ||
2477 | static void addr_handler(int status, struct sockaddr *src_addr, | |
2478 | struct rdma_dev_addr *dev_addr, void *context) | |
2479 | { | |
2480 | struct rdma_id_private *id_priv = context; | |
a1b1b61f | 2481 | struct rdma_cm_event event; |
e51060f0 | 2482 | |
a1b1b61f | 2483 | memset(&event, 0, sizeof event); |
de910bd9 | 2484 | mutex_lock(&id_priv->handler_mutex); |
550e5ca7 NM |
2485 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, |
2486 | RDMA_CM_ADDR_RESOLVED)) | |
61a73c70 | 2487 | goto out; |
61a73c70 | 2488 | |
7b85627b | 2489 | memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr)); |
61a73c70 | 2490 | if (!status && !id_priv->cma_dev) |
be9130cc | 2491 | status = cma_acquire_dev(id_priv, NULL); |
e51060f0 SH |
2492 | |
2493 | if (status) { | |
550e5ca7 NM |
2494 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED, |
2495 | RDMA_CM_ADDR_BOUND)) | |
e51060f0 | 2496 | goto out; |
a1b1b61f SH |
2497 | event.event = RDMA_CM_EVENT_ADDR_ERROR; |
2498 | event.status = status; | |
7b85627b | 2499 | } else |
a1b1b61f | 2500 | event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
e51060f0 | 2501 | |
a1b1b61f | 2502 | if (id_priv->id.event_handler(&id_priv->id, &event)) { |
550e5ca7 | 2503 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 2504 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2505 | cma_deref_id(id_priv); |
2506 | rdma_destroy_id(&id_priv->id); | |
2507 | return; | |
2508 | } | |
2509 | out: | |
de910bd9 | 2510 | mutex_unlock(&id_priv->handler_mutex); |
e51060f0 SH |
2511 | cma_deref_id(id_priv); |
2512 | } | |
2513 | ||
2514 | static int cma_resolve_loopback(struct rdma_id_private *id_priv) | |
2515 | { | |
2516 | struct cma_work *work; | |
f0ee3404 | 2517 | union ib_gid gid; |
e51060f0 SH |
2518 | int ret; |
2519 | ||
2520 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2521 | if (!work) | |
2522 | return -ENOMEM; | |
2523 | ||
2524 | if (!id_priv->cma_dev) { | |
2525 | ret = cma_bind_loopback(id_priv); | |
2526 | if (ret) | |
2527 | goto err; | |
2528 | } | |
2529 | ||
6f8372b6 SH |
2530 | rdma_addr_get_sgid(&id_priv->id.route.addr.dev_addr, &gid); |
2531 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, &gid); | |
e51060f0 | 2532 | |
e51060f0 | 2533 | work->id = id_priv; |
c4028958 | 2534 | INIT_WORK(&work->work, cma_work_handler); |
550e5ca7 NM |
2535 | work->old_state = RDMA_CM_ADDR_QUERY; |
2536 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
e51060f0 SH |
2537 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; |
2538 | queue_work(cma_wq, &work->work); | |
2539 | return 0; | |
2540 | err: | |
2541 | kfree(work); | |
2542 | return ret; | |
2543 | } | |
2544 | ||
f17df3b0 SH |
2545 | static int cma_resolve_ib_addr(struct rdma_id_private *id_priv) |
2546 | { | |
2547 | struct cma_work *work; | |
2548 | int ret; | |
2549 | ||
2550 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
2551 | if (!work) | |
2552 | return -ENOMEM; | |
2553 | ||
2554 | if (!id_priv->cma_dev) { | |
2555 | ret = cma_resolve_ib_dev(id_priv); | |
2556 | if (ret) | |
2557 | goto err; | |
2558 | } | |
2559 | ||
2560 | rdma_addr_set_dgid(&id_priv->id.route.addr.dev_addr, (union ib_gid *) | |
2561 | &(((struct sockaddr_ib *) &id_priv->id.route.addr.dst_addr)->sib_addr)); | |
2562 | ||
2563 | work->id = id_priv; | |
2564 | INIT_WORK(&work->work, cma_work_handler); | |
2565 | work->old_state = RDMA_CM_ADDR_QUERY; | |
2566 | work->new_state = RDMA_CM_ADDR_RESOLVED; | |
2567 | work->event.event = RDMA_CM_EVENT_ADDR_RESOLVED; | |
2568 | queue_work(cma_wq, &work->work); | |
2569 | return 0; | |
2570 | err: | |
2571 | kfree(work); | |
2572 | return ret; | |
2573 | } | |
2574 | ||
e51060f0 SH |
2575 | static int cma_bind_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, |
2576 | struct sockaddr *dst_addr) | |
2577 | { | |
d14714df SH |
2578 | if (!src_addr || !src_addr->sa_family) { |
2579 | src_addr = (struct sockaddr *) &id->route.addr.src_addr; | |
f17df3b0 SH |
2580 | src_addr->sa_family = dst_addr->sa_family; |
2581 | if (dst_addr->sa_family == AF_INET6) { | |
6c26a771 SB |
2582 | struct sockaddr_in6 *src_addr6 = (struct sockaddr_in6 *) src_addr; |
2583 | struct sockaddr_in6 *dst_addr6 = (struct sockaddr_in6 *) dst_addr; | |
2584 | src_addr6->sin6_scope_id = dst_addr6->sin6_scope_id; | |
2585 | if (ipv6_addr_type(&dst_addr6->sin6_addr) & IPV6_ADDR_LINKLOCAL) | |
2586 | id->route.addr.dev_addr.bound_dev_if = dst_addr6->sin6_scope_id; | |
f17df3b0 SH |
2587 | } else if (dst_addr->sa_family == AF_IB) { |
2588 | ((struct sockaddr_ib *) src_addr)->sib_pkey = | |
2589 | ((struct sockaddr_ib *) dst_addr)->sib_pkey; | |
d14714df SH |
2590 | } |
2591 | } | |
2592 | return rdma_bind_addr(id, src_addr); | |
e51060f0 SH |
2593 | } |
2594 | ||
2595 | int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, | |
2596 | struct sockaddr *dst_addr, int timeout_ms) | |
2597 | { | |
2598 | struct rdma_id_private *id_priv; | |
2599 | int ret; | |
2600 | ||
2601 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2602 | if (id_priv->state == RDMA_CM_IDLE) { |
e51060f0 SH |
2603 | ret = cma_bind_addr(id, src_addr, dst_addr); |
2604 | if (ret) | |
2605 | return ret; | |
2606 | } | |
2607 | ||
4ae7152e SH |
2608 | if (cma_family(id_priv) != dst_addr->sa_family) |
2609 | return -EINVAL; | |
2610 | ||
550e5ca7 | 2611 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) |
e51060f0 SH |
2612 | return -EINVAL; |
2613 | ||
2614 | atomic_inc(&id_priv->refcount); | |
f4753834 | 2615 | memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); |
f17df3b0 | 2616 | if (cma_any_addr(dst_addr)) { |
e51060f0 | 2617 | ret = cma_resolve_loopback(id_priv); |
f17df3b0 SH |
2618 | } else { |
2619 | if (dst_addr->sa_family == AF_IB) { | |
2620 | ret = cma_resolve_ib_addr(id_priv); | |
2621 | } else { | |
2622 | ret = rdma_resolve_ip(&addr_client, cma_src_addr(id_priv), | |
2623 | dst_addr, &id->route.addr.dev_addr, | |
2624 | timeout_ms, addr_handler, id_priv); | |
2625 | } | |
2626 | } | |
e51060f0 SH |
2627 | if (ret) |
2628 | goto err; | |
2629 | ||
2630 | return 0; | |
2631 | err: | |
550e5ca7 | 2632 | cma_comp_exch(id_priv, RDMA_CM_ADDR_QUERY, RDMA_CM_ADDR_BOUND); |
e51060f0 SH |
2633 | cma_deref_id(id_priv); |
2634 | return ret; | |
2635 | } | |
2636 | EXPORT_SYMBOL(rdma_resolve_addr); | |
2637 | ||
a9bb7912 HS |
2638 | int rdma_set_reuseaddr(struct rdma_cm_id *id, int reuse) |
2639 | { | |
2640 | struct rdma_id_private *id_priv; | |
2641 | unsigned long flags; | |
2642 | int ret; | |
2643 | ||
2644 | id_priv = container_of(id, struct rdma_id_private, id); | |
2645 | spin_lock_irqsave(&id_priv->lock, flags); | |
c8dea2f9 | 2646 | if (reuse || id_priv->state == RDMA_CM_IDLE) { |
a9bb7912 HS |
2647 | id_priv->reuseaddr = reuse; |
2648 | ret = 0; | |
2649 | } else { | |
2650 | ret = -EINVAL; | |
2651 | } | |
2652 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2653 | return ret; | |
2654 | } | |
2655 | EXPORT_SYMBOL(rdma_set_reuseaddr); | |
2656 | ||
68602120 SH |
2657 | int rdma_set_afonly(struct rdma_cm_id *id, int afonly) |
2658 | { | |
2659 | struct rdma_id_private *id_priv; | |
2660 | unsigned long flags; | |
2661 | int ret; | |
2662 | ||
2663 | id_priv = container_of(id, struct rdma_id_private, id); | |
2664 | spin_lock_irqsave(&id_priv->lock, flags); | |
2665 | if (id_priv->state == RDMA_CM_IDLE || id_priv->state == RDMA_CM_ADDR_BOUND) { | |
2666 | id_priv->options |= (1 << CMA_OPTION_AFONLY); | |
2667 | id_priv->afonly = afonly; | |
2668 | ret = 0; | |
2669 | } else { | |
2670 | ret = -EINVAL; | |
2671 | } | |
2672 | spin_unlock_irqrestore(&id_priv->lock, flags); | |
2673 | return ret; | |
2674 | } | |
2675 | EXPORT_SYMBOL(rdma_set_afonly); | |
2676 | ||
e51060f0 SH |
2677 | static void cma_bind_port(struct rdma_bind_list *bind_list, |
2678 | struct rdma_id_private *id_priv) | |
2679 | { | |
58afdcb7 SH |
2680 | struct sockaddr *addr; |
2681 | struct sockaddr_ib *sib; | |
2682 | u64 sid, mask; | |
2683 | __be16 port; | |
e51060f0 | 2684 | |
f4753834 | 2685 | addr = cma_src_addr(id_priv); |
58afdcb7 SH |
2686 | port = htons(bind_list->port); |
2687 | ||
2688 | switch (addr->sa_family) { | |
2689 | case AF_INET: | |
2690 | ((struct sockaddr_in *) addr)->sin_port = port; | |
2691 | break; | |
2692 | case AF_INET6: | |
2693 | ((struct sockaddr_in6 *) addr)->sin6_port = port; | |
2694 | break; | |
2695 | case AF_IB: | |
2696 | sib = (struct sockaddr_ib *) addr; | |
2697 | sid = be64_to_cpu(sib->sib_sid); | |
2698 | mask = be64_to_cpu(sib->sib_sid_mask); | |
2699 | sib->sib_sid = cpu_to_be64((sid & mask) | (u64) ntohs(port)); | |
2700 | sib->sib_sid_mask = cpu_to_be64(~0ULL); | |
2701 | break; | |
2702 | } | |
e51060f0 SH |
2703 | id_priv->bind_list = bind_list; |
2704 | hlist_add_head(&id_priv->node, &bind_list->owners); | |
2705 | } | |
2706 | ||
aac978e1 HE |
2707 | static int cma_alloc_port(enum rdma_port_space ps, |
2708 | struct rdma_id_private *id_priv, unsigned short snum) | |
e51060f0 SH |
2709 | { |
2710 | struct rdma_bind_list *bind_list; | |
3b069c5d | 2711 | int ret; |
e51060f0 | 2712 | |
cb164b8c | 2713 | bind_list = kzalloc(sizeof *bind_list, GFP_KERNEL); |
e51060f0 SH |
2714 | if (!bind_list) |
2715 | return -ENOMEM; | |
2716 | ||
fa20105e GS |
2717 | ret = cma_ps_alloc(id_priv->id.route.addr.dev_addr.net, ps, bind_list, |
2718 | snum); | |
3b069c5d TH |
2719 | if (ret < 0) |
2720 | goto err; | |
aedec080 SH |
2721 | |
2722 | bind_list->ps = ps; | |
3b069c5d | 2723 | bind_list->port = (unsigned short)ret; |
aedec080 SH |
2724 | cma_bind_port(bind_list, id_priv); |
2725 | return 0; | |
3b069c5d | 2726 | err: |
aedec080 | 2727 | kfree(bind_list); |
3b069c5d | 2728 | return ret == -ENOSPC ? -EADDRNOTAVAIL : ret; |
aedec080 | 2729 | } |
e51060f0 | 2730 | |
aac978e1 HE |
2731 | static int cma_alloc_any_port(enum rdma_port_space ps, |
2732 | struct rdma_id_private *id_priv) | |
aedec080 | 2733 | { |
5d7220e8 TH |
2734 | static unsigned int last_used_port; |
2735 | int low, high, remaining; | |
2736 | unsigned int rover; | |
fa20105e | 2737 | struct net *net = id_priv->id.route.addr.dev_addr.net; |
e51060f0 | 2738 | |
fa20105e | 2739 | inet_get_local_port_range(net, &low, &high); |
5d7220e8 | 2740 | remaining = (high - low) + 1; |
63862b5b | 2741 | rover = prandom_u32() % remaining + low; |
5d7220e8 TH |
2742 | retry: |
2743 | if (last_used_port != rover && | |
fa20105e | 2744 | !cma_ps_find(net, ps, (unsigned short)rover)) { |
5d7220e8 TH |
2745 | int ret = cma_alloc_port(ps, id_priv, rover); |
2746 | /* | |
2747 | * Remember previously used port number in order to avoid | |
2748 | * re-using same port immediately after it is closed. | |
2749 | */ | |
2750 | if (!ret) | |
2751 | last_used_port = rover; | |
2752 | if (ret != -EADDRNOTAVAIL) | |
2753 | return ret; | |
e51060f0 | 2754 | } |
5d7220e8 TH |
2755 | if (--remaining) { |
2756 | rover++; | |
2757 | if ((rover < low) || (rover > high)) | |
2758 | rover = low; | |
2759 | goto retry; | |
2760 | } | |
2761 | return -EADDRNOTAVAIL; | |
e51060f0 SH |
2762 | } |
2763 | ||
a9bb7912 HS |
2764 | /* |
2765 | * Check that the requested port is available. This is called when trying to | |
2766 | * bind to a specific port, or when trying to listen on a bound port. In | |
2767 | * the latter case, the provided id_priv may already be on the bind_list, but | |
2768 | * we still need to check that it's okay to start listening. | |
2769 | */ | |
2770 | static int cma_check_port(struct rdma_bind_list *bind_list, | |
2771 | struct rdma_id_private *id_priv, uint8_t reuseaddr) | |
e51060f0 SH |
2772 | { |
2773 | struct rdma_id_private *cur_id; | |
43b752da | 2774 | struct sockaddr *addr, *cur_addr; |
e51060f0 | 2775 | |
f4753834 | 2776 | addr = cma_src_addr(id_priv); |
b67bfe0d | 2777 | hlist_for_each_entry(cur_id, &bind_list->owners, node) { |
a9bb7912 HS |
2778 | if (id_priv == cur_id) |
2779 | continue; | |
3cd96564 | 2780 | |
5b0ec991 SH |
2781 | if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr && |
2782 | cur_id->reuseaddr) | |
2783 | continue; | |
e51060f0 | 2784 | |
f4753834 | 2785 | cur_addr = cma_src_addr(cur_id); |
5b0ec991 SH |
2786 | if (id_priv->afonly && cur_id->afonly && |
2787 | (addr->sa_family != cur_addr->sa_family)) | |
2788 | continue; | |
2789 | ||
2790 | if (cma_any_addr(addr) || cma_any_addr(cur_addr)) | |
2791 | return -EADDRNOTAVAIL; | |
2792 | ||
2793 | if (!cma_addr_cmp(addr, cur_addr)) | |
2794 | return -EADDRINUSE; | |
a9bb7912 | 2795 | } |
e51060f0 SH |
2796 | return 0; |
2797 | } | |
2798 | ||
aac978e1 HE |
2799 | static int cma_use_port(enum rdma_port_space ps, |
2800 | struct rdma_id_private *id_priv) | |
a9bb7912 HS |
2801 | { |
2802 | struct rdma_bind_list *bind_list; | |
2803 | unsigned short snum; | |
2804 | int ret; | |
2805 | ||
f4753834 | 2806 | snum = ntohs(cma_port(cma_src_addr(id_priv))); |
a9bb7912 HS |
2807 | if (snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) |
2808 | return -EACCES; | |
2809 | ||
fa20105e | 2810 | bind_list = cma_ps_find(id_priv->id.route.addr.dev_addr.net, ps, snum); |
a9bb7912 HS |
2811 | if (!bind_list) { |
2812 | ret = cma_alloc_port(ps, id_priv, snum); | |
2813 | } else { | |
2814 | ret = cma_check_port(bind_list, id_priv, id_priv->reuseaddr); | |
2815 | if (!ret) | |
2816 | cma_bind_port(bind_list, id_priv); | |
2817 | } | |
2818 | return ret; | |
2819 | } | |
2820 | ||
2821 | static int cma_bind_listen(struct rdma_id_private *id_priv) | |
2822 | { | |
2823 | struct rdma_bind_list *bind_list = id_priv->bind_list; | |
2824 | int ret = 0; | |
2825 | ||
2826 | mutex_lock(&lock); | |
2827 | if (bind_list->owners.first->next) | |
2828 | ret = cma_check_port(bind_list, id_priv, 0); | |
2829 | mutex_unlock(&lock); | |
2830 | return ret; | |
2831 | } | |
2832 | ||
aac978e1 HE |
2833 | static enum rdma_port_space cma_select_inet_ps( |
2834 | struct rdma_id_private *id_priv) | |
e51060f0 | 2835 | { |
e51060f0 | 2836 | switch (id_priv->id.ps) { |
e51060f0 | 2837 | case RDMA_PS_TCP: |
628e5f6d | 2838 | case RDMA_PS_UDP: |
c8f6a362 | 2839 | case RDMA_PS_IPOIB: |
2d2e9415 | 2840 | case RDMA_PS_IB: |
aac978e1 | 2841 | return id_priv->id.ps; |
e51060f0 | 2842 | default: |
aac978e1 HE |
2843 | |
2844 | return 0; | |
58afdcb7 SH |
2845 | } |
2846 | } | |
2847 | ||
aac978e1 | 2848 | static enum rdma_port_space cma_select_ib_ps(struct rdma_id_private *id_priv) |
58afdcb7 | 2849 | { |
aac978e1 | 2850 | enum rdma_port_space ps = 0; |
58afdcb7 SH |
2851 | struct sockaddr_ib *sib; |
2852 | u64 sid_ps, mask, sid; | |
2853 | ||
f4753834 | 2854 | sib = (struct sockaddr_ib *) cma_src_addr(id_priv); |
58afdcb7 SH |
2855 | mask = be64_to_cpu(sib->sib_sid_mask) & RDMA_IB_IP_PS_MASK; |
2856 | sid = be64_to_cpu(sib->sib_sid) & mask; | |
2857 | ||
2858 | if ((id_priv->id.ps == RDMA_PS_IB) && (sid == (RDMA_IB_IP_PS_IB & mask))) { | |
2859 | sid_ps = RDMA_IB_IP_PS_IB; | |
aac978e1 | 2860 | ps = RDMA_PS_IB; |
58afdcb7 SH |
2861 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_TCP)) && |
2862 | (sid == (RDMA_IB_IP_PS_TCP & mask))) { | |
2863 | sid_ps = RDMA_IB_IP_PS_TCP; | |
aac978e1 | 2864 | ps = RDMA_PS_TCP; |
58afdcb7 SH |
2865 | } else if (((id_priv->id.ps == RDMA_PS_IB) || (id_priv->id.ps == RDMA_PS_UDP)) && |
2866 | (sid == (RDMA_IB_IP_PS_UDP & mask))) { | |
2867 | sid_ps = RDMA_IB_IP_PS_UDP; | |
aac978e1 | 2868 | ps = RDMA_PS_UDP; |
e51060f0 SH |
2869 | } |
2870 | ||
58afdcb7 SH |
2871 | if (ps) { |
2872 | sib->sib_sid = cpu_to_be64(sid_ps | ntohs(cma_port((struct sockaddr *) sib))); | |
2873 | sib->sib_sid_mask = cpu_to_be64(RDMA_IB_IP_PS_MASK | | |
2874 | be64_to_cpu(sib->sib_sid_mask)); | |
2875 | } | |
2876 | return ps; | |
2877 | } | |
2878 | ||
2879 | static int cma_get_port(struct rdma_id_private *id_priv) | |
2880 | { | |
aac978e1 | 2881 | enum rdma_port_space ps; |
58afdcb7 SH |
2882 | int ret; |
2883 | ||
f4753834 | 2884 | if (cma_family(id_priv) != AF_IB) |
58afdcb7 SH |
2885 | ps = cma_select_inet_ps(id_priv); |
2886 | else | |
2887 | ps = cma_select_ib_ps(id_priv); | |
2888 | if (!ps) | |
2889 | return -EPROTONOSUPPORT; | |
2890 | ||
e51060f0 | 2891 | mutex_lock(&lock); |
f4753834 | 2892 | if (cma_any_port(cma_src_addr(id_priv))) |
aedec080 | 2893 | ret = cma_alloc_any_port(ps, id_priv); |
e51060f0 SH |
2894 | else |
2895 | ret = cma_use_port(ps, id_priv); | |
2896 | mutex_unlock(&lock); | |
2897 | ||
2898 | return ret; | |
2899 | } | |
2900 | ||
d14714df SH |
2901 | static int cma_check_linklocal(struct rdma_dev_addr *dev_addr, |
2902 | struct sockaddr *addr) | |
2903 | { | |
d90f9b35 | 2904 | #if IS_ENABLED(CONFIG_IPV6) |
d14714df SH |
2905 | struct sockaddr_in6 *sin6; |
2906 | ||
2907 | if (addr->sa_family != AF_INET6) | |
2908 | return 0; | |
2909 | ||
2910 | sin6 = (struct sockaddr_in6 *) addr; | |
5462eddd SK |
2911 | |
2912 | if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)) | |
2913 | return 0; | |
2914 | ||
2915 | if (!sin6->sin6_scope_id) | |
d14714df SH |
2916 | return -EINVAL; |
2917 | ||
2918 | dev_addr->bound_dev_if = sin6->sin6_scope_id; | |
2919 | #endif | |
2920 | return 0; | |
2921 | } | |
2922 | ||
a9bb7912 HS |
2923 | int rdma_listen(struct rdma_cm_id *id, int backlog) |
2924 | { | |
2925 | struct rdma_id_private *id_priv; | |
2926 | int ret; | |
2927 | ||
2928 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2929 | if (id_priv->state == RDMA_CM_IDLE) { |
f4753834 SH |
2930 | id->route.addr.src_addr.ss_family = AF_INET; |
2931 | ret = rdma_bind_addr(id, cma_src_addr(id_priv)); | |
a9bb7912 HS |
2932 | if (ret) |
2933 | return ret; | |
2934 | } | |
2935 | ||
550e5ca7 | 2936 | if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_LISTEN)) |
a9bb7912 HS |
2937 | return -EINVAL; |
2938 | ||
2939 | if (id_priv->reuseaddr) { | |
2940 | ret = cma_bind_listen(id_priv); | |
2941 | if (ret) | |
2942 | goto err; | |
2943 | } | |
2944 | ||
2945 | id_priv->backlog = backlog; | |
2946 | if (id->device) { | |
72219cea | 2947 | if (rdma_cap_ib_cm(id->device, 1)) { |
a9bb7912 HS |
2948 | ret = cma_ib_listen(id_priv); |
2949 | if (ret) | |
2950 | goto err; | |
04215330 | 2951 | } else if (rdma_cap_iw_cm(id->device, 1)) { |
a9bb7912 HS |
2952 | ret = cma_iw_listen(id_priv, backlog); |
2953 | if (ret) | |
2954 | goto err; | |
21655afc | 2955 | } else { |
a9bb7912 HS |
2956 | ret = -ENOSYS; |
2957 | goto err; | |
2958 | } | |
2959 | } else | |
2960 | cma_listen_on_all(id_priv); | |
2961 | ||
2962 | return 0; | |
2963 | err: | |
2964 | id_priv->backlog = 0; | |
550e5ca7 | 2965 | cma_comp_exch(id_priv, RDMA_CM_LISTEN, RDMA_CM_ADDR_BOUND); |
a9bb7912 HS |
2966 | return ret; |
2967 | } | |
2968 | EXPORT_SYMBOL(rdma_listen); | |
2969 | ||
e51060f0 SH |
2970 | int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr) |
2971 | { | |
2972 | struct rdma_id_private *id_priv; | |
2973 | int ret; | |
2974 | ||
680f920a SH |
2975 | if (addr->sa_family != AF_INET && addr->sa_family != AF_INET6 && |
2976 | addr->sa_family != AF_IB) | |
e51060f0 SH |
2977 | return -EAFNOSUPPORT; |
2978 | ||
2979 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 2980 | if (!cma_comp_exch(id_priv, RDMA_CM_IDLE, RDMA_CM_ADDR_BOUND)) |
e51060f0 SH |
2981 | return -EINVAL; |
2982 | ||
d14714df SH |
2983 | ret = cma_check_linklocal(&id->route.addr.dev_addr, addr); |
2984 | if (ret) | |
2985 | goto err1; | |
2986 | ||
7b85627b | 2987 | memcpy(cma_src_addr(id_priv), addr, rdma_addr_size(addr)); |
8523c048 | 2988 | if (!cma_any_addr(addr)) { |
680f920a | 2989 | ret = cma_translate_addr(addr, &id->route.addr.dev_addr); |
e51060f0 | 2990 | if (ret) |
255d0c14 KK |
2991 | goto err1; |
2992 | ||
be9130cc | 2993 | ret = cma_acquire_dev(id_priv, NULL); |
255d0c14 KK |
2994 | if (ret) |
2995 | goto err1; | |
e51060f0 SH |
2996 | } |
2997 | ||
68602120 SH |
2998 | if (!(id_priv->options & (1 << CMA_OPTION_AFONLY))) { |
2999 | if (addr->sa_family == AF_INET) | |
3000 | id_priv->afonly = 1; | |
5b0ec991 | 3001 | #if IS_ENABLED(CONFIG_IPV6) |
fa20105e GS |
3002 | else if (addr->sa_family == AF_INET6) { |
3003 | struct net *net = id_priv->id.route.addr.dev_addr.net; | |
3004 | ||
3005 | id_priv->afonly = net->ipv6.sysctl.bindv6only; | |
3006 | } | |
5b0ec991 | 3007 | #endif |
68602120 | 3008 | } |
e51060f0 SH |
3009 | ret = cma_get_port(id_priv); |
3010 | if (ret) | |
255d0c14 | 3011 | goto err2; |
e51060f0 SH |
3012 | |
3013 | return 0; | |
255d0c14 | 3014 | err2: |
a396d43a SH |
3015 | if (id_priv->cma_dev) |
3016 | cma_release_dev(id_priv); | |
255d0c14 | 3017 | err1: |
550e5ca7 | 3018 | cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_IDLE); |
e51060f0 SH |
3019 | return ret; |
3020 | } | |
3021 | EXPORT_SYMBOL(rdma_bind_addr); | |
3022 | ||
f4753834 | 3023 | static int cma_format_hdr(void *hdr, struct rdma_id_private *id_priv) |
e51060f0 | 3024 | { |
e51060f0 | 3025 | struct cma_hdr *cma_hdr; |
e51060f0 | 3026 | |
01602f11 SH |
3027 | cma_hdr = hdr; |
3028 | cma_hdr->cma_version = CMA_VERSION; | |
f4753834 | 3029 | if (cma_family(id_priv) == AF_INET) { |
1f5175ad AS |
3030 | struct sockaddr_in *src4, *dst4; |
3031 | ||
f4753834 SH |
3032 | src4 = (struct sockaddr_in *) cma_src_addr(id_priv); |
3033 | dst4 = (struct sockaddr_in *) cma_dst_addr(id_priv); | |
1f5175ad | 3034 | |
01602f11 SH |
3035 | cma_set_ip_ver(cma_hdr, 4); |
3036 | cma_hdr->src_addr.ip4.addr = src4->sin_addr.s_addr; | |
3037 | cma_hdr->dst_addr.ip4.addr = dst4->sin_addr.s_addr; | |
3038 | cma_hdr->port = src4->sin_port; | |
e8160e15 | 3039 | } else if (cma_family(id_priv) == AF_INET6) { |
1f5175ad AS |
3040 | struct sockaddr_in6 *src6, *dst6; |
3041 | ||
f4753834 SH |
3042 | src6 = (struct sockaddr_in6 *) cma_src_addr(id_priv); |
3043 | dst6 = (struct sockaddr_in6 *) cma_dst_addr(id_priv); | |
1f5175ad | 3044 | |
01602f11 SH |
3045 | cma_set_ip_ver(cma_hdr, 6); |
3046 | cma_hdr->src_addr.ip6 = src6->sin6_addr; | |
3047 | cma_hdr->dst_addr.ip6 = dst6->sin6_addr; | |
3048 | cma_hdr->port = src6->sin6_port; | |
e51060f0 SH |
3049 | } |
3050 | return 0; | |
3051 | } | |
3052 | ||
628e5f6d SH |
3053 | static int cma_sidr_rep_handler(struct ib_cm_id *cm_id, |
3054 | struct ib_cm_event *ib_event) | |
3055 | { | |
3056 | struct rdma_id_private *id_priv = cm_id->context; | |
3057 | struct rdma_cm_event event; | |
3058 | struct ib_cm_sidr_rep_event_param *rep = &ib_event->param.sidr_rep_rcvd; | |
3059 | int ret = 0; | |
3060 | ||
550e5ca7 | 3061 | if (cma_disable_callback(id_priv, RDMA_CM_CONNECT)) |
8aa08602 | 3062 | return 0; |
628e5f6d | 3063 | |
8aa08602 | 3064 | memset(&event, 0, sizeof event); |
628e5f6d SH |
3065 | switch (ib_event->event) { |
3066 | case IB_CM_SIDR_REQ_ERROR: | |
3067 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3068 | event.status = -ETIMEDOUT; | |
3069 | break; | |
3070 | case IB_CM_SIDR_REP_RECEIVED: | |
3071 | event.param.ud.private_data = ib_event->private_data; | |
3072 | event.param.ud.private_data_len = IB_CM_SIDR_REP_PRIVATE_DATA_SIZE; | |
3073 | if (rep->status != IB_SIDR_SUCCESS) { | |
3074 | event.event = RDMA_CM_EVENT_UNREACHABLE; | |
3075 | event.status = ib_event->param.sidr_rep_rcvd.status; | |
3076 | break; | |
3077 | } | |
5c438135 | 3078 | ret = cma_set_qkey(id_priv, rep->qkey); |
d2ca39f2 YE |
3079 | if (ret) { |
3080 | event.event = RDMA_CM_EVENT_ADDR_ERROR; | |
5c438135 | 3081 | event.status = ret; |
628e5f6d SH |
3082 | break; |
3083 | } | |
3084 | ib_init_ah_from_path(id_priv->id.device, id_priv->id.port_num, | |
3085 | id_priv->id.route.path_rec, | |
3086 | &event.param.ud.ah_attr); | |
3087 | event.param.ud.qp_num = rep->qpn; | |
3088 | event.param.ud.qkey = rep->qkey; | |
3089 | event.event = RDMA_CM_EVENT_ESTABLISHED; | |
3090 | event.status = 0; | |
3091 | break; | |
3092 | default: | |
468f2239 | 3093 | printk(KERN_ERR "RDMA CMA: unexpected IB CM event: %d\n", |
628e5f6d SH |
3094 | ib_event->event); |
3095 | goto out; | |
3096 | } | |
3097 | ||
3098 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3099 | if (ret) { | |
3100 | /* Destroy the CM ID by returning a non-zero value. */ | |
3101 | id_priv->cm_id.ib = NULL; | |
550e5ca7 | 3102 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3103 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3104 | rdma_destroy_id(&id_priv->id); |
3105 | return ret; | |
3106 | } | |
3107 | out: | |
de910bd9 | 3108 | mutex_unlock(&id_priv->handler_mutex); |
628e5f6d SH |
3109 | return ret; |
3110 | } | |
3111 | ||
3112 | static int cma_resolve_ib_udp(struct rdma_id_private *id_priv, | |
3113 | struct rdma_conn_param *conn_param) | |
3114 | { | |
3115 | struct ib_cm_sidr_req_param req; | |
0c9361fc | 3116 | struct ib_cm_id *id; |
e511d1ae | 3117 | void *private_data; |
e8160e15 | 3118 | int offset, ret; |
628e5f6d | 3119 | |
e511d1ae | 3120 | memset(&req, 0, sizeof req); |
e8160e15 SH |
3121 | offset = cma_user_data_offset(id_priv); |
3122 | req.private_data_len = offset + conn_param->private_data_len; | |
04ded167 SH |
3123 | if (req.private_data_len < conn_param->private_data_len) |
3124 | return -EINVAL; | |
3125 | ||
e8160e15 | 3126 | if (req.private_data_len) { |
e511d1ae SH |
3127 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); |
3128 | if (!private_data) | |
e8160e15 SH |
3129 | return -ENOMEM; |
3130 | } else { | |
e511d1ae | 3131 | private_data = NULL; |
e8160e15 | 3132 | } |
628e5f6d SH |
3133 | |
3134 | if (conn_param->private_data && conn_param->private_data_len) | |
e511d1ae SH |
3135 | memcpy(private_data + offset, conn_param->private_data, |
3136 | conn_param->private_data_len); | |
628e5f6d | 3137 | |
e511d1ae SH |
3138 | if (private_data) { |
3139 | ret = cma_format_hdr(private_data, id_priv); | |
e8160e15 SH |
3140 | if (ret) |
3141 | goto out; | |
e511d1ae | 3142 | req.private_data = private_data; |
e8160e15 | 3143 | } |
628e5f6d | 3144 | |
0c9361fc JM |
3145 | id = ib_create_cm_id(id_priv->id.device, cma_sidr_rep_handler, |
3146 | id_priv); | |
3147 | if (IS_ERR(id)) { | |
3148 | ret = PTR_ERR(id); | |
628e5f6d SH |
3149 | goto out; |
3150 | } | |
0c9361fc | 3151 | id_priv->cm_id.ib = id; |
628e5f6d | 3152 | |
f4753834 | 3153 | req.path = id_priv->id.route.path_rec; |
cf53936f | 3154 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
628e5f6d SH |
3155 | req.timeout_ms = 1 << (CMA_CM_RESPONSE_TIMEOUT - 8); |
3156 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3157 | ||
3158 | ret = ib_send_cm_sidr_req(id_priv->cm_id.ib, &req); | |
3159 | if (ret) { | |
3160 | ib_destroy_cm_id(id_priv->cm_id.ib); | |
3161 | id_priv->cm_id.ib = NULL; | |
3162 | } | |
3163 | out: | |
e511d1ae | 3164 | kfree(private_data); |
628e5f6d SH |
3165 | return ret; |
3166 | } | |
3167 | ||
e51060f0 SH |
3168 | static int cma_connect_ib(struct rdma_id_private *id_priv, |
3169 | struct rdma_conn_param *conn_param) | |
3170 | { | |
3171 | struct ib_cm_req_param req; | |
3172 | struct rdma_route *route; | |
3173 | void *private_data; | |
0c9361fc | 3174 | struct ib_cm_id *id; |
e51060f0 SH |
3175 | int offset, ret; |
3176 | ||
3177 | memset(&req, 0, sizeof req); | |
e8160e15 | 3178 | offset = cma_user_data_offset(id_priv); |
e51060f0 | 3179 | req.private_data_len = offset + conn_param->private_data_len; |
04ded167 SH |
3180 | if (req.private_data_len < conn_param->private_data_len) |
3181 | return -EINVAL; | |
3182 | ||
e8160e15 SH |
3183 | if (req.private_data_len) { |
3184 | private_data = kzalloc(req.private_data_len, GFP_ATOMIC); | |
3185 | if (!private_data) | |
3186 | return -ENOMEM; | |
3187 | } else { | |
3188 | private_data = NULL; | |
3189 | } | |
e51060f0 SH |
3190 | |
3191 | if (conn_param->private_data && conn_param->private_data_len) | |
3192 | memcpy(private_data + offset, conn_param->private_data, | |
3193 | conn_param->private_data_len); | |
3194 | ||
0c9361fc JM |
3195 | id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv); |
3196 | if (IS_ERR(id)) { | |
3197 | ret = PTR_ERR(id); | |
e51060f0 SH |
3198 | goto out; |
3199 | } | |
0c9361fc | 3200 | id_priv->cm_id.ib = id; |
e51060f0 SH |
3201 | |
3202 | route = &id_priv->id.route; | |
e8160e15 SH |
3203 | if (private_data) { |
3204 | ret = cma_format_hdr(private_data, id_priv); | |
3205 | if (ret) | |
3206 | goto out; | |
3207 | req.private_data = private_data; | |
3208 | } | |
e51060f0 SH |
3209 | |
3210 | req.primary_path = &route->path_rec[0]; | |
3211 | if (route->num_paths == 2) | |
3212 | req.alternate_path = &route->path_rec[1]; | |
3213 | ||
cf53936f | 3214 | req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv)); |
e51060f0 | 3215 | req.qp_num = id_priv->qp_num; |
18c441a6 | 3216 | req.qp_type = id_priv->id.qp_type; |
e51060f0 SH |
3217 | req.starting_psn = id_priv->seq_num; |
3218 | req.responder_resources = conn_param->responder_resources; | |
3219 | req.initiator_depth = conn_param->initiator_depth; | |
3220 | req.flow_control = conn_param->flow_control; | |
4ede178a SH |
3221 | req.retry_count = min_t(u8, 7, conn_param->retry_count); |
3222 | req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); | |
e51060f0 SH |
3223 | req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; |
3224 | req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT; | |
3225 | req.max_cm_retries = CMA_MAX_CM_RETRIES; | |
3226 | req.srq = id_priv->srq ? 1 : 0; | |
3227 | ||
3228 | ret = ib_send_cm_req(id_priv->cm_id.ib, &req); | |
3229 | out: | |
0c9361fc JM |
3230 | if (ret && !IS_ERR(id)) { |
3231 | ib_destroy_cm_id(id); | |
675a027c KK |
3232 | id_priv->cm_id.ib = NULL; |
3233 | } | |
3234 | ||
e51060f0 SH |
3235 | kfree(private_data); |
3236 | return ret; | |
3237 | } | |
3238 | ||
07ebafba TT |
3239 | static int cma_connect_iw(struct rdma_id_private *id_priv, |
3240 | struct rdma_conn_param *conn_param) | |
3241 | { | |
3242 | struct iw_cm_id *cm_id; | |
07ebafba TT |
3243 | int ret; |
3244 | struct iw_cm_conn_param iw_param; | |
3245 | ||
3246 | cm_id = iw_create_cm_id(id_priv->id.device, cma_iw_handler, id_priv); | |
0c9361fc JM |
3247 | if (IS_ERR(cm_id)) |
3248 | return PTR_ERR(cm_id); | |
07ebafba | 3249 | |
68cdba06 | 3250 | cm_id->tos = id_priv->tos; |
07ebafba TT |
3251 | id_priv->cm_id.iw = cm_id; |
3252 | ||
24d44a39 SW |
3253 | memcpy(&cm_id->local_addr, cma_src_addr(id_priv), |
3254 | rdma_addr_size(cma_src_addr(id_priv))); | |
3255 | memcpy(&cm_id->remote_addr, cma_dst_addr(id_priv), | |
3256 | rdma_addr_size(cma_dst_addr(id_priv))); | |
07ebafba | 3257 | |
5851bb89 | 3258 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
675a027c KK |
3259 | if (ret) |
3260 | goto out; | |
07ebafba | 3261 | |
f45ee80e HS |
3262 | if (conn_param) { |
3263 | iw_param.ord = conn_param->initiator_depth; | |
3264 | iw_param.ird = conn_param->responder_resources; | |
3265 | iw_param.private_data = conn_param->private_data; | |
3266 | iw_param.private_data_len = conn_param->private_data_len; | |
3267 | iw_param.qpn = id_priv->id.qp ? id_priv->qp_num : conn_param->qp_num; | |
3268 | } else { | |
3269 | memset(&iw_param, 0, sizeof iw_param); | |
07ebafba | 3270 | iw_param.qpn = id_priv->qp_num; |
f45ee80e | 3271 | } |
07ebafba TT |
3272 | ret = iw_cm_connect(cm_id, &iw_param); |
3273 | out: | |
0c9361fc | 3274 | if (ret) { |
675a027c KK |
3275 | iw_destroy_cm_id(cm_id); |
3276 | id_priv->cm_id.iw = NULL; | |
3277 | } | |
07ebafba TT |
3278 | return ret; |
3279 | } | |
3280 | ||
e51060f0 SH |
3281 | int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3282 | { | |
3283 | struct rdma_id_private *id_priv; | |
3284 | int ret; | |
3285 | ||
3286 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 | 3287 | if (!cma_comp_exch(id_priv, RDMA_CM_ROUTE_RESOLVED, RDMA_CM_CONNECT)) |
e51060f0 SH |
3288 | return -EINVAL; |
3289 | ||
3290 | if (!id->qp) { | |
3291 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3292 | id_priv->srq = conn_param->srq; |
3293 | } | |
3294 | ||
72219cea | 3295 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3296 | if (id->qp_type == IB_QPT_UD) |
628e5f6d SH |
3297 | ret = cma_resolve_ib_udp(id_priv, conn_param); |
3298 | else | |
3299 | ret = cma_connect_ib(id_priv, conn_param); | |
04215330 | 3300 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3301 | ret = cma_connect_iw(id_priv, conn_param); |
21655afc | 3302 | else |
e51060f0 | 3303 | ret = -ENOSYS; |
e51060f0 SH |
3304 | if (ret) |
3305 | goto err; | |
3306 | ||
3307 | return 0; | |
3308 | err: | |
550e5ca7 | 3309 | cma_comp_exch(id_priv, RDMA_CM_CONNECT, RDMA_CM_ROUTE_RESOLVED); |
e51060f0 SH |
3310 | return ret; |
3311 | } | |
3312 | EXPORT_SYMBOL(rdma_connect); | |
3313 | ||
3314 | static int cma_accept_ib(struct rdma_id_private *id_priv, | |
3315 | struct rdma_conn_param *conn_param) | |
3316 | { | |
3317 | struct ib_cm_rep_param rep; | |
5851bb89 | 3318 | int ret; |
0fe313b0 | 3319 | |
5851bb89 SH |
3320 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
3321 | if (ret) | |
3322 | goto out; | |
0fe313b0 | 3323 | |
5851bb89 SH |
3324 | ret = cma_modify_qp_rts(id_priv, conn_param); |
3325 | if (ret) | |
3326 | goto out; | |
e51060f0 SH |
3327 | |
3328 | memset(&rep, 0, sizeof rep); | |
3329 | rep.qp_num = id_priv->qp_num; | |
3330 | rep.starting_psn = id_priv->seq_num; | |
3331 | rep.private_data = conn_param->private_data; | |
3332 | rep.private_data_len = conn_param->private_data_len; | |
3333 | rep.responder_resources = conn_param->responder_resources; | |
3334 | rep.initiator_depth = conn_param->initiator_depth; | |
e51060f0 SH |
3335 | rep.failover_accepted = 0; |
3336 | rep.flow_control = conn_param->flow_control; | |
4ede178a | 3337 | rep.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count); |
e51060f0 SH |
3338 | rep.srq = id_priv->srq ? 1 : 0; |
3339 | ||
0fe313b0 SH |
3340 | ret = ib_send_cm_rep(id_priv->cm_id.ib, &rep); |
3341 | out: | |
3342 | return ret; | |
e51060f0 SH |
3343 | } |
3344 | ||
07ebafba TT |
3345 | static int cma_accept_iw(struct rdma_id_private *id_priv, |
3346 | struct rdma_conn_param *conn_param) | |
3347 | { | |
3348 | struct iw_cm_conn_param iw_param; | |
3349 | int ret; | |
3350 | ||
5851bb89 | 3351 | ret = cma_modify_qp_rtr(id_priv, conn_param); |
07ebafba TT |
3352 | if (ret) |
3353 | return ret; | |
3354 | ||
3355 | iw_param.ord = conn_param->initiator_depth; | |
3356 | iw_param.ird = conn_param->responder_resources; | |
3357 | iw_param.private_data = conn_param->private_data; | |
3358 | iw_param.private_data_len = conn_param->private_data_len; | |
3359 | if (id_priv->id.qp) { | |
3360 | iw_param.qpn = id_priv->qp_num; | |
3361 | } else | |
3362 | iw_param.qpn = conn_param->qp_num; | |
3363 | ||
3364 | return iw_cm_accept(id_priv->cm_id.iw, &iw_param); | |
3365 | } | |
3366 | ||
628e5f6d | 3367 | static int cma_send_sidr_rep(struct rdma_id_private *id_priv, |
5c438135 | 3368 | enum ib_cm_sidr_status status, u32 qkey, |
628e5f6d SH |
3369 | const void *private_data, int private_data_len) |
3370 | { | |
3371 | struct ib_cm_sidr_rep_param rep; | |
d2ca39f2 | 3372 | int ret; |
628e5f6d SH |
3373 | |
3374 | memset(&rep, 0, sizeof rep); | |
3375 | rep.status = status; | |
3376 | if (status == IB_SIDR_SUCCESS) { | |
5c438135 | 3377 | ret = cma_set_qkey(id_priv, qkey); |
d2ca39f2 YE |
3378 | if (ret) |
3379 | return ret; | |
628e5f6d | 3380 | rep.qp_num = id_priv->qp_num; |
c8f6a362 | 3381 | rep.qkey = id_priv->qkey; |
628e5f6d SH |
3382 | } |
3383 | rep.private_data = private_data; | |
3384 | rep.private_data_len = private_data_len; | |
3385 | ||
3386 | return ib_send_cm_sidr_rep(id_priv->cm_id.ib, &rep); | |
3387 | } | |
3388 | ||
e51060f0 SH |
3389 | int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param) |
3390 | { | |
3391 | struct rdma_id_private *id_priv; | |
3392 | int ret; | |
3393 | ||
3394 | id_priv = container_of(id, struct rdma_id_private, id); | |
83e9502d NM |
3395 | |
3396 | id_priv->owner = task_pid_nr(current); | |
3397 | ||
550e5ca7 | 3398 | if (!cma_comp(id_priv, RDMA_CM_CONNECT)) |
e51060f0 SH |
3399 | return -EINVAL; |
3400 | ||
3401 | if (!id->qp && conn_param) { | |
3402 | id_priv->qp_num = conn_param->qp_num; | |
e51060f0 SH |
3403 | id_priv->srq = conn_param->srq; |
3404 | } | |
3405 | ||
72219cea | 3406 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
f45ee80e HS |
3407 | if (id->qp_type == IB_QPT_UD) { |
3408 | if (conn_param) | |
3409 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 3410 | conn_param->qkey, |
f45ee80e HS |
3411 | conn_param->private_data, |
3412 | conn_param->private_data_len); | |
3413 | else | |
3414 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS, | |
5c438135 | 3415 | 0, NULL, 0); |
f45ee80e HS |
3416 | } else { |
3417 | if (conn_param) | |
3418 | ret = cma_accept_ib(id_priv, conn_param); | |
3419 | else | |
3420 | ret = cma_rep_recv(id_priv); | |
3421 | } | |
04215330 | 3422 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) |
07ebafba | 3423 | ret = cma_accept_iw(id_priv, conn_param); |
21655afc | 3424 | else |
e51060f0 | 3425 | ret = -ENOSYS; |
e51060f0 SH |
3426 | |
3427 | if (ret) | |
3428 | goto reject; | |
3429 | ||
3430 | return 0; | |
3431 | reject: | |
c5483388 | 3432 | cma_modify_qp_err(id_priv); |
e51060f0 SH |
3433 | rdma_reject(id, NULL, 0); |
3434 | return ret; | |
3435 | } | |
3436 | EXPORT_SYMBOL(rdma_accept); | |
3437 | ||
0fe313b0 SH |
3438 | int rdma_notify(struct rdma_cm_id *id, enum ib_event_type event) |
3439 | { | |
3440 | struct rdma_id_private *id_priv; | |
3441 | int ret; | |
3442 | ||
3443 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3444 | if (!id_priv->cm_id.ib) |
0fe313b0 SH |
3445 | return -EINVAL; |
3446 | ||
3447 | switch (id->device->node_type) { | |
3448 | case RDMA_NODE_IB_CA: | |
3449 | ret = ib_cm_notify(id_priv->cm_id.ib, event); | |
3450 | break; | |
3451 | default: | |
3452 | ret = 0; | |
3453 | break; | |
3454 | } | |
3455 | return ret; | |
3456 | } | |
3457 | EXPORT_SYMBOL(rdma_notify); | |
3458 | ||
e51060f0 SH |
3459 | int rdma_reject(struct rdma_cm_id *id, const void *private_data, |
3460 | u8 private_data_len) | |
3461 | { | |
3462 | struct rdma_id_private *id_priv; | |
3463 | int ret; | |
3464 | ||
3465 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3466 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3467 | return -EINVAL; |
3468 | ||
72219cea | 3469 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
b26f9b99 | 3470 | if (id->qp_type == IB_QPT_UD) |
5c438135 | 3471 | ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0, |
628e5f6d SH |
3472 | private_data, private_data_len); |
3473 | else | |
3474 | ret = ib_send_cm_rej(id_priv->cm_id.ib, | |
3475 | IB_CM_REJ_CONSUMER_DEFINED, NULL, | |
3476 | 0, private_data, private_data_len); | |
04215330 | 3477 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba TT |
3478 | ret = iw_cm_reject(id_priv->cm_id.iw, |
3479 | private_data, private_data_len); | |
21655afc | 3480 | } else |
e51060f0 | 3481 | ret = -ENOSYS; |
21655afc | 3482 | |
e51060f0 SH |
3483 | return ret; |
3484 | } | |
3485 | EXPORT_SYMBOL(rdma_reject); | |
3486 | ||
3487 | int rdma_disconnect(struct rdma_cm_id *id) | |
3488 | { | |
3489 | struct rdma_id_private *id_priv; | |
3490 | int ret; | |
3491 | ||
3492 | id_priv = container_of(id, struct rdma_id_private, id); | |
0c9361fc | 3493 | if (!id_priv->cm_id.ib) |
e51060f0 SH |
3494 | return -EINVAL; |
3495 | ||
72219cea | 3496 | if (rdma_cap_ib_cm(id->device, id->port_num)) { |
c5483388 | 3497 | ret = cma_modify_qp_err(id_priv); |
07ebafba TT |
3498 | if (ret) |
3499 | goto out; | |
e51060f0 SH |
3500 | /* Initiate or respond to a disconnect. */ |
3501 | if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0)) | |
3502 | ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0); | |
04215330 | 3503 | } else if (rdma_cap_iw_cm(id->device, id->port_num)) { |
07ebafba | 3504 | ret = iw_cm_disconnect(id_priv->cm_id.iw, 0); |
21655afc | 3505 | } else |
07ebafba | 3506 | ret = -EINVAL; |
21655afc | 3507 | |
e51060f0 SH |
3508 | out: |
3509 | return ret; | |
3510 | } | |
3511 | EXPORT_SYMBOL(rdma_disconnect); | |
3512 | ||
c8f6a362 SH |
3513 | static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) |
3514 | { | |
3515 | struct rdma_id_private *id_priv; | |
3516 | struct cma_multicast *mc = multicast->context; | |
3517 | struct rdma_cm_event event; | |
3518 | int ret; | |
3519 | ||
3520 | id_priv = mc->id_priv; | |
550e5ca7 NM |
3521 | if (cma_disable_callback(id_priv, RDMA_CM_ADDR_BOUND) && |
3522 | cma_disable_callback(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
8aa08602 | 3523 | return 0; |
c8f6a362 | 3524 | |
5c438135 SH |
3525 | if (!status) |
3526 | status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey)); | |
c5483388 | 3527 | mutex_lock(&id_priv->qp_mutex); |
c8f6a362 SH |
3528 | if (!status && id_priv->id.qp) |
3529 | status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, | |
46ea5061 | 3530 | be16_to_cpu(multicast->rec.mlid)); |
c5483388 | 3531 | mutex_unlock(&id_priv->qp_mutex); |
c8f6a362 SH |
3532 | |
3533 | memset(&event, 0, sizeof event); | |
3534 | event.status = status; | |
3535 | event.param.ud.private_data = mc->context; | |
3536 | if (!status) { | |
3537 | event.event = RDMA_CM_EVENT_MULTICAST_JOIN; | |
3538 | ib_init_ah_from_mcmember(id_priv->id.device, | |
3539 | id_priv->id.port_num, &multicast->rec, | |
3540 | &event.param.ud.ah_attr); | |
3541 | event.param.ud.qp_num = 0xFFFFFF; | |
3542 | event.param.ud.qkey = be32_to_cpu(multicast->rec.qkey); | |
3543 | } else | |
3544 | event.event = RDMA_CM_EVENT_MULTICAST_ERROR; | |
3545 | ||
3546 | ret = id_priv->id.event_handler(&id_priv->id, &event); | |
3547 | if (ret) { | |
550e5ca7 | 3548 | cma_exch(id_priv, RDMA_CM_DESTROYING); |
de910bd9 | 3549 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3550 | rdma_destroy_id(&id_priv->id); |
3551 | return 0; | |
3552 | } | |
8aa08602 | 3553 | |
de910bd9 | 3554 | mutex_unlock(&id_priv->handler_mutex); |
c8f6a362 SH |
3555 | return 0; |
3556 | } | |
3557 | ||
3558 | static void cma_set_mgid(struct rdma_id_private *id_priv, | |
3559 | struct sockaddr *addr, union ib_gid *mgid) | |
3560 | { | |
3561 | unsigned char mc_map[MAX_ADDR_LEN]; | |
3562 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3563 | struct sockaddr_in *sin = (struct sockaddr_in *) addr; | |
3564 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) addr; | |
3565 | ||
3566 | if (cma_any_addr(addr)) { | |
3567 | memset(mgid, 0, sizeof *mgid); | |
3568 | } else if ((addr->sa_family == AF_INET6) && | |
1c9b2819 | 3569 | ((be32_to_cpu(sin6->sin6_addr.s6_addr32[0]) & 0xFFF0FFFF) == |
c8f6a362 SH |
3570 | 0xFF10A01B)) { |
3571 | /* IPv6 address is an SA assigned MGID. */ | |
3572 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
5bc2b7b3 SH |
3573 | } else if (addr->sa_family == AF_IB) { |
3574 | memcpy(mgid, &((struct sockaddr_ib *) addr)->sib_addr, sizeof *mgid); | |
e2e62697 JG |
3575 | } else if ((addr->sa_family == AF_INET6)) { |
3576 | ipv6_ib_mc_map(&sin6->sin6_addr, dev_addr->broadcast, mc_map); | |
3577 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3578 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
3579 | *mgid = *(union ib_gid *) (mc_map + 4); | |
c8f6a362 | 3580 | } else { |
a9e527e3 | 3581 | ip_ib_mc_map(sin->sin_addr.s_addr, dev_addr->broadcast, mc_map); |
c8f6a362 SH |
3582 | if (id_priv->id.ps == RDMA_PS_UDP) |
3583 | mc_map[7] = 0x01; /* Use RDMA CM signature */ | |
c8f6a362 SH |
3584 | *mgid = *(union ib_gid *) (mc_map + 4); |
3585 | } | |
3586 | } | |
3587 | ||
3588 | static int cma_join_ib_multicast(struct rdma_id_private *id_priv, | |
3589 | struct cma_multicast *mc) | |
3590 | { | |
3591 | struct ib_sa_mcmember_rec rec; | |
3592 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3593 | ib_sa_comp_mask comp_mask; | |
3594 | int ret; | |
3595 | ||
3596 | ib_addr_get_mgid(dev_addr, &rec.mgid); | |
3597 | ret = ib_sa_get_mcmember_rec(id_priv->id.device, id_priv->id.port_num, | |
3598 | &rec.mgid, &rec); | |
3599 | if (ret) | |
3600 | return ret; | |
3601 | ||
5bc2b7b3 SH |
3602 | ret = cma_set_qkey(id_priv, 0); |
3603 | if (ret) | |
3604 | return ret; | |
3605 | ||
3f446754 | 3606 | cma_set_mgid(id_priv, (struct sockaddr *) &mc->addr, &rec.mgid); |
5bc2b7b3 | 3607 | rec.qkey = cpu_to_be32(id_priv->qkey); |
6f8372b6 | 3608 | rdma_addr_get_sgid(dev_addr, &rec.port_gid); |
c8f6a362 SH |
3609 | rec.pkey = cpu_to_be16(ib_addr_get_pkey(dev_addr)); |
3610 | rec.join_state = 1; | |
3611 | ||
3612 | comp_mask = IB_SA_MCMEMBER_REC_MGID | IB_SA_MCMEMBER_REC_PORT_GID | | |
3613 | IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_JOIN_STATE | | |
3614 | IB_SA_MCMEMBER_REC_QKEY | IB_SA_MCMEMBER_REC_SL | | |
3615 | IB_SA_MCMEMBER_REC_FLOW_LABEL | | |
3616 | IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; | |
3617 | ||
84adeee9 YE |
3618 | if (id_priv->id.ps == RDMA_PS_IPOIB) |
3619 | comp_mask |= IB_SA_MCMEMBER_REC_RATE | | |
2a22fb8c DB |
3620 | IB_SA_MCMEMBER_REC_RATE_SELECTOR | |
3621 | IB_SA_MCMEMBER_REC_MTU_SELECTOR | | |
3622 | IB_SA_MCMEMBER_REC_MTU | | |
3623 | IB_SA_MCMEMBER_REC_HOP_LIMIT; | |
84adeee9 | 3624 | |
c8f6a362 SH |
3625 | mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, |
3626 | id_priv->id.port_num, &rec, | |
3627 | comp_mask, GFP_KERNEL, | |
3628 | cma_ib_mc_handler, mc); | |
8c6ffba0 | 3629 | return PTR_ERR_OR_ZERO(mc->multicast.ib); |
c8f6a362 SH |
3630 | } |
3631 | ||
3c86aa70 EC |
3632 | static void iboe_mcast_work_handler(struct work_struct *work) |
3633 | { | |
3634 | struct iboe_mcast_work *mw = container_of(work, struct iboe_mcast_work, work); | |
3635 | struct cma_multicast *mc = mw->mc; | |
3636 | struct ib_sa_multicast *m = mc->multicast.ib; | |
3637 | ||
3638 | mc->multicast.ib->context = mc; | |
3639 | cma_ib_mc_handler(0, m); | |
3640 | kref_put(&mc->mcref, release_mc); | |
3641 | kfree(mw); | |
3642 | } | |
3643 | ||
3644 | static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid) | |
3645 | { | |
3646 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
3647 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
3648 | ||
3649 | if (cma_any_addr(addr)) { | |
3650 | memset(mgid, 0, sizeof *mgid); | |
3651 | } else if (addr->sa_family == AF_INET6) { | |
3652 | memcpy(mgid, &sin6->sin6_addr, sizeof *mgid); | |
3653 | } else { | |
3654 | mgid->raw[0] = 0xff; | |
3655 | mgid->raw[1] = 0x0e; | |
3656 | mgid->raw[2] = 0; | |
3657 | mgid->raw[3] = 0; | |
3658 | mgid->raw[4] = 0; | |
3659 | mgid->raw[5] = 0; | |
3660 | mgid->raw[6] = 0; | |
3661 | mgid->raw[7] = 0; | |
3662 | mgid->raw[8] = 0; | |
3663 | mgid->raw[9] = 0; | |
3664 | mgid->raw[10] = 0xff; | |
3665 | mgid->raw[11] = 0xff; | |
3666 | *(__be32 *)(&mgid->raw[12]) = sin->sin_addr.s_addr; | |
3667 | } | |
3668 | } | |
3669 | ||
3670 | static int cma_iboe_join_multicast(struct rdma_id_private *id_priv, | |
3671 | struct cma_multicast *mc) | |
3672 | { | |
3673 | struct iboe_mcast_work *work; | |
3674 | struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr; | |
3675 | int err; | |
3676 | struct sockaddr *addr = (struct sockaddr *)&mc->addr; | |
3677 | struct net_device *ndev = NULL; | |
3678 | ||
3679 | if (cma_zero_addr((struct sockaddr *)&mc->addr)) | |
3680 | return -EINVAL; | |
3681 | ||
3682 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3683 | if (!work) | |
3684 | return -ENOMEM; | |
3685 | ||
3686 | mc->multicast.ib = kzalloc(sizeof(struct ib_sa_multicast), GFP_KERNEL); | |
3687 | if (!mc->multicast.ib) { | |
3688 | err = -ENOMEM; | |
3689 | goto out1; | |
3690 | } | |
3691 | ||
3692 | cma_iboe_set_mgid(addr, &mc->multicast.ib->rec.mgid); | |
3693 | ||
3694 | mc->multicast.ib->rec.pkey = cpu_to_be16(0xffff); | |
3695 | if (id_priv->id.ps == RDMA_PS_UDP) | |
3696 | mc->multicast.ib->rec.qkey = cpu_to_be32(RDMA_UDP_QKEY); | |
3697 | ||
3698 | if (dev_addr->bound_dev_if) | |
3699 | ndev = dev_get_by_index(&init_net, dev_addr->bound_dev_if); | |
3700 | if (!ndev) { | |
3701 | err = -ENODEV; | |
3702 | goto out2; | |
3703 | } | |
3704 | mc->multicast.ib->rec.rate = iboe_get_rate(ndev); | |
3705 | mc->multicast.ib->rec.hop_limit = 1; | |
3706 | mc->multicast.ib->rec.mtu = iboe_get_mtu(ndev->mtu); | |
3707 | dev_put(ndev); | |
3708 | if (!mc->multicast.ib->rec.mtu) { | |
3709 | err = -EINVAL; | |
3710 | goto out2; | |
3711 | } | |
7b85627b MS |
3712 | rdma_ip2gid((struct sockaddr *)&id_priv->id.route.addr.src_addr, |
3713 | &mc->multicast.ib->rec.port_gid); | |
3c86aa70 EC |
3714 | work->id = id_priv; |
3715 | work->mc = mc; | |
3716 | INIT_WORK(&work->work, iboe_mcast_work_handler); | |
3717 | kref_get(&mc->mcref); | |
3718 | queue_work(cma_wq, &work->work); | |
3719 | ||
3720 | return 0; | |
3721 | ||
3722 | out2: | |
3723 | kfree(mc->multicast.ib); | |
3724 | out1: | |
3725 | kfree(work); | |
3726 | return err; | |
3727 | } | |
3728 | ||
c8f6a362 SH |
3729 | int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, |
3730 | void *context) | |
3731 | { | |
3732 | struct rdma_id_private *id_priv; | |
3733 | struct cma_multicast *mc; | |
3734 | int ret; | |
3735 | ||
3736 | id_priv = container_of(id, struct rdma_id_private, id); | |
550e5ca7 NM |
3737 | if (!cma_comp(id_priv, RDMA_CM_ADDR_BOUND) && |
3738 | !cma_comp(id_priv, RDMA_CM_ADDR_RESOLVED)) | |
c8f6a362 SH |
3739 | return -EINVAL; |
3740 | ||
3741 | mc = kmalloc(sizeof *mc, GFP_KERNEL); | |
3742 | if (!mc) | |
3743 | return -ENOMEM; | |
3744 | ||
ef560861 | 3745 | memcpy(&mc->addr, addr, rdma_addr_size(addr)); |
c8f6a362 SH |
3746 | mc->context = context; |
3747 | mc->id_priv = id_priv; | |
3748 | ||
3749 | spin_lock(&id_priv->lock); | |
3750 | list_add(&mc->list, &id_priv->mc_list); | |
3751 | spin_unlock(&id_priv->lock); | |
3752 | ||
5d9fb044 | 3753 | if (rdma_protocol_roce(id->device, id->port_num)) { |
5c9a5282 MW |
3754 | kref_init(&mc->mcref); |
3755 | ret = cma_iboe_join_multicast(id_priv, mc); | |
a31ad3b0 | 3756 | } else if (rdma_cap_ib_mcast(id->device, id->port_num)) |
5c9a5282 MW |
3757 | ret = cma_join_ib_multicast(id_priv, mc); |
3758 | else | |
c8f6a362 | 3759 | ret = -ENOSYS; |
c8f6a362 SH |
3760 | |
3761 | if (ret) { | |
3762 | spin_lock_irq(&id_priv->lock); | |
3763 | list_del(&mc->list); | |
3764 | spin_unlock_irq(&id_priv->lock); | |
3765 | kfree(mc); | |
3766 | } | |
3767 | return ret; | |
3768 | } | |
3769 | EXPORT_SYMBOL(rdma_join_multicast); | |
3770 | ||
3771 | void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) | |
3772 | { | |
3773 | struct rdma_id_private *id_priv; | |
3774 | struct cma_multicast *mc; | |
3775 | ||
3776 | id_priv = container_of(id, struct rdma_id_private, id); | |
3777 | spin_lock_irq(&id_priv->lock); | |
3778 | list_for_each_entry(mc, &id_priv->mc_list, list) { | |
ef560861 | 3779 | if (!memcmp(&mc->addr, addr, rdma_addr_size(addr))) { |
c8f6a362 SH |
3780 | list_del(&mc->list); |
3781 | spin_unlock_irq(&id_priv->lock); | |
3782 | ||
3783 | if (id->qp) | |
3784 | ib_detach_mcast(id->qp, | |
3785 | &mc->multicast.ib->rec.mgid, | |
46ea5061 | 3786 | be16_to_cpu(mc->multicast.ib->rec.mlid)); |
5c9a5282 MW |
3787 | |
3788 | BUG_ON(id_priv->cma_dev->device != id->device); | |
3789 | ||
a31ad3b0 | 3790 | if (rdma_cap_ib_mcast(id->device, id->port_num)) { |
5c9a5282 MW |
3791 | ib_sa_free_multicast(mc->multicast.ib); |
3792 | kfree(mc); | |
5d9fb044 | 3793 | } else if (rdma_protocol_roce(id->device, id->port_num)) |
5c9a5282 MW |
3794 | kref_put(&mc->mcref, release_mc); |
3795 | ||
c8f6a362 SH |
3796 | return; |
3797 | } | |
3798 | } | |
3799 | spin_unlock_irq(&id_priv->lock); | |
3800 | } | |
3801 | EXPORT_SYMBOL(rdma_leave_multicast); | |
3802 | ||
dd5bdff8 OG |
3803 | static int cma_netdev_change(struct net_device *ndev, struct rdma_id_private *id_priv) |
3804 | { | |
3805 | struct rdma_dev_addr *dev_addr; | |
3806 | struct cma_ndev_work *work; | |
3807 | ||
3808 | dev_addr = &id_priv->id.route.addr.dev_addr; | |
3809 | ||
6266ed6e | 3810 | if ((dev_addr->bound_dev_if == ndev->ifindex) && |
fa20105e | 3811 | (net_eq(dev_net(ndev), dev_addr->net)) && |
dd5bdff8 OG |
3812 | memcmp(dev_addr->src_dev_addr, ndev->dev_addr, ndev->addr_len)) { |
3813 | printk(KERN_INFO "RDMA CM addr change for ndev %s used by id %p\n", | |
3814 | ndev->name, &id_priv->id); | |
3815 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
3816 | if (!work) | |
3817 | return -ENOMEM; | |
3818 | ||
3819 | INIT_WORK(&work->work, cma_ndev_work_handler); | |
3820 | work->id = id_priv; | |
3821 | work->event.event = RDMA_CM_EVENT_ADDR_CHANGE; | |
3822 | atomic_inc(&id_priv->refcount); | |
3823 | queue_work(cma_wq, &work->work); | |
3824 | } | |
3825 | ||
3826 | return 0; | |
3827 | } | |
3828 | ||
3829 | static int cma_netdev_callback(struct notifier_block *self, unsigned long event, | |
351638e7 | 3830 | void *ptr) |
dd5bdff8 | 3831 | { |
351638e7 | 3832 | struct net_device *ndev = netdev_notifier_info_to_dev(ptr); |
dd5bdff8 OG |
3833 | struct cma_device *cma_dev; |
3834 | struct rdma_id_private *id_priv; | |
3835 | int ret = NOTIFY_DONE; | |
3836 | ||
dd5bdff8 OG |
3837 | if (event != NETDEV_BONDING_FAILOVER) |
3838 | return NOTIFY_DONE; | |
3839 | ||
3840 | if (!(ndev->flags & IFF_MASTER) || !(ndev->priv_flags & IFF_BONDING)) | |
3841 | return NOTIFY_DONE; | |
3842 | ||
3843 | mutex_lock(&lock); | |
3844 | list_for_each_entry(cma_dev, &dev_list, list) | |
3845 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3846 | ret = cma_netdev_change(ndev, id_priv); | |
3847 | if (ret) | |
3848 | goto out; | |
3849 | } | |
3850 | ||
3851 | out: | |
3852 | mutex_unlock(&lock); | |
3853 | return ret; | |
3854 | } | |
3855 | ||
3856 | static struct notifier_block cma_nb = { | |
3857 | .notifier_call = cma_netdev_callback | |
3858 | }; | |
3859 | ||
e51060f0 SH |
3860 | static void cma_add_one(struct ib_device *device) |
3861 | { | |
3862 | struct cma_device *cma_dev; | |
3863 | struct rdma_id_private *id_priv; | |
3864 | ||
3865 | cma_dev = kmalloc(sizeof *cma_dev, GFP_KERNEL); | |
3866 | if (!cma_dev) | |
3867 | return; | |
3868 | ||
3869 | cma_dev->device = device; | |
e51060f0 SH |
3870 | |
3871 | init_completion(&cma_dev->comp); | |
3872 | atomic_set(&cma_dev->refcount, 1); | |
3873 | INIT_LIST_HEAD(&cma_dev->id_list); | |
3874 | ib_set_client_data(device, &cma_client, cma_dev); | |
3875 | ||
3876 | mutex_lock(&lock); | |
3877 | list_add_tail(&cma_dev->list, &dev_list); | |
3878 | list_for_each_entry(id_priv, &listen_any_list, list) | |
3879 | cma_listen_on_dev(id_priv, cma_dev); | |
3880 | mutex_unlock(&lock); | |
e51060f0 SH |
3881 | } |
3882 | ||
3883 | static int cma_remove_id_dev(struct rdma_id_private *id_priv) | |
3884 | { | |
a1b1b61f | 3885 | struct rdma_cm_event event; |
550e5ca7 | 3886 | enum rdma_cm_state state; |
de910bd9 | 3887 | int ret = 0; |
e51060f0 SH |
3888 | |
3889 | /* Record that we want to remove the device */ | |
550e5ca7 NM |
3890 | state = cma_exch(id_priv, RDMA_CM_DEVICE_REMOVAL); |
3891 | if (state == RDMA_CM_DESTROYING) | |
e51060f0 SH |
3892 | return 0; |
3893 | ||
3894 | cma_cancel_operation(id_priv, state); | |
de910bd9 | 3895 | mutex_lock(&id_priv->handler_mutex); |
e51060f0 SH |
3896 | |
3897 | /* Check for destruction from another callback. */ | |
550e5ca7 | 3898 | if (!cma_comp(id_priv, RDMA_CM_DEVICE_REMOVAL)) |
de910bd9 | 3899 | goto out; |
e51060f0 | 3900 | |
a1b1b61f SH |
3901 | memset(&event, 0, sizeof event); |
3902 | event.event = RDMA_CM_EVENT_DEVICE_REMOVAL; | |
de910bd9 OG |
3903 | ret = id_priv->id.event_handler(&id_priv->id, &event); |
3904 | out: | |
3905 | mutex_unlock(&id_priv->handler_mutex); | |
3906 | return ret; | |
e51060f0 SH |
3907 | } |
3908 | ||
3909 | static void cma_process_remove(struct cma_device *cma_dev) | |
3910 | { | |
e51060f0 SH |
3911 | struct rdma_id_private *id_priv; |
3912 | int ret; | |
3913 | ||
e51060f0 SH |
3914 | mutex_lock(&lock); |
3915 | while (!list_empty(&cma_dev->id_list)) { | |
3916 | id_priv = list_entry(cma_dev->id_list.next, | |
3917 | struct rdma_id_private, list); | |
3918 | ||
d02d1f53 | 3919 | list_del(&id_priv->listen_list); |
94de178a | 3920 | list_del_init(&id_priv->list); |
e51060f0 SH |
3921 | atomic_inc(&id_priv->refcount); |
3922 | mutex_unlock(&lock); | |
3923 | ||
d02d1f53 | 3924 | ret = id_priv->internal_id ? 1 : cma_remove_id_dev(id_priv); |
e51060f0 SH |
3925 | cma_deref_id(id_priv); |
3926 | if (ret) | |
3927 | rdma_destroy_id(&id_priv->id); | |
3928 | ||
3929 | mutex_lock(&lock); | |
3930 | } | |
3931 | mutex_unlock(&lock); | |
3932 | ||
3933 | cma_deref_dev(cma_dev); | |
3934 | wait_for_completion(&cma_dev->comp); | |
3935 | } | |
3936 | ||
7c1eb45a | 3937 | static void cma_remove_one(struct ib_device *device, void *client_data) |
e51060f0 | 3938 | { |
7c1eb45a | 3939 | struct cma_device *cma_dev = client_data; |
e51060f0 | 3940 | |
e51060f0 SH |
3941 | if (!cma_dev) |
3942 | return; | |
3943 | ||
3944 | mutex_lock(&lock); | |
3945 | list_del(&cma_dev->list); | |
3946 | mutex_unlock(&lock); | |
3947 | ||
3948 | cma_process_remove(cma_dev); | |
3949 | kfree(cma_dev); | |
3950 | } | |
3951 | ||
753f618a NM |
3952 | static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb) |
3953 | { | |
3954 | struct nlmsghdr *nlh; | |
3955 | struct rdma_cm_id_stats *id_stats; | |
3956 | struct rdma_id_private *id_priv; | |
3957 | struct rdma_cm_id *id = NULL; | |
3958 | struct cma_device *cma_dev; | |
3959 | int i_dev = 0, i_id = 0; | |
3960 | ||
3961 | /* | |
3962 | * We export all of the IDs as a sequence of messages. Each | |
3963 | * ID gets its own netlink message. | |
3964 | */ | |
3965 | mutex_lock(&lock); | |
3966 | ||
3967 | list_for_each_entry(cma_dev, &dev_list, list) { | |
3968 | if (i_dev < cb->args[0]) { | |
3969 | i_dev++; | |
3970 | continue; | |
3971 | } | |
3972 | ||
3973 | i_id = 0; | |
3974 | list_for_each_entry(id_priv, &cma_dev->id_list, list) { | |
3975 | if (i_id < cb->args[1]) { | |
3976 | i_id++; | |
3977 | continue; | |
3978 | } | |
3979 | ||
3980 | id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq, | |
3981 | sizeof *id_stats, RDMA_NL_RDMA_CM, | |
30dc5e63 TN |
3982 | RDMA_NL_RDMA_CM_ID_STATS, |
3983 | NLM_F_MULTI); | |
753f618a NM |
3984 | if (!id_stats) |
3985 | goto out; | |
3986 | ||
3987 | memset(id_stats, 0, sizeof *id_stats); | |
3988 | id = &id_priv->id; | |
3989 | id_stats->node_type = id->route.addr.dev_addr.dev_type; | |
3990 | id_stats->port_num = id->port_num; | |
3991 | id_stats->bound_dev_if = | |
3992 | id->route.addr.dev_addr.bound_dev_if; | |
3993 | ||
ce117ffa SH |
3994 | if (ibnl_put_attr(skb, nlh, |
3995 | rdma_addr_size(cma_src_addr(id_priv)), | |
3996 | cma_src_addr(id_priv), | |
3997 | RDMA_NL_RDMA_CM_ATTR_SRC_ADDR)) | |
3998 | goto out; | |
3999 | if (ibnl_put_attr(skb, nlh, | |
4000 | rdma_addr_size(cma_src_addr(id_priv)), | |
4001 | cma_dst_addr(id_priv), | |
4002 | RDMA_NL_RDMA_CM_ATTR_DST_ADDR)) | |
4003 | goto out; | |
753f618a | 4004 | |
83e9502d | 4005 | id_stats->pid = id_priv->owner; |
753f618a NM |
4006 | id_stats->port_space = id->ps; |
4007 | id_stats->cm_state = id_priv->state; | |
4008 | id_stats->qp_num = id_priv->qp_num; | |
4009 | id_stats->qp_type = id->qp_type; | |
4010 | ||
4011 | i_id++; | |
4012 | } | |
4013 | ||
4014 | cb->args[1] = 0; | |
4015 | i_dev++; | |
4016 | } | |
4017 | ||
4018 | out: | |
4019 | mutex_unlock(&lock); | |
4020 | cb->args[0] = i_dev; | |
4021 | cb->args[1] = i_id; | |
4022 | ||
4023 | return skb->len; | |
4024 | } | |
4025 | ||
4026 | static const struct ibnl_client_cbs cma_cb_table[] = { | |
809d5fc9 G |
4027 | [RDMA_NL_RDMA_CM_ID_STATS] = { .dump = cma_get_id_stats, |
4028 | .module = THIS_MODULE }, | |
753f618a NM |
4029 | }; |
4030 | ||
4be74b42 HE |
4031 | static int cma_init_net(struct net *net) |
4032 | { | |
4033 | struct cma_pernet *pernet = cma_pernet(net); | |
4034 | ||
4035 | idr_init(&pernet->tcp_ps); | |
4036 | idr_init(&pernet->udp_ps); | |
4037 | idr_init(&pernet->ipoib_ps); | |
4038 | idr_init(&pernet->ib_ps); | |
4039 | ||
4040 | return 0; | |
4041 | } | |
4042 | ||
4043 | static void cma_exit_net(struct net *net) | |
4044 | { | |
4045 | struct cma_pernet *pernet = cma_pernet(net); | |
4046 | ||
4047 | idr_destroy(&pernet->tcp_ps); | |
4048 | idr_destroy(&pernet->udp_ps); | |
4049 | idr_destroy(&pernet->ipoib_ps); | |
4050 | idr_destroy(&pernet->ib_ps); | |
4051 | } | |
4052 | ||
4053 | static struct pernet_operations cma_pernet_operations = { | |
4054 | .init = cma_init_net, | |
4055 | .exit = cma_exit_net, | |
4056 | .id = &cma_pernet_id, | |
4057 | .size = sizeof(struct cma_pernet), | |
4058 | }; | |
4059 | ||
716abb1f | 4060 | static int __init cma_init(void) |
e51060f0 | 4061 | { |
5d7220e8 | 4062 | int ret; |
227b60f5 | 4063 | |
c7f743a6 | 4064 | cma_wq = create_singlethread_workqueue("rdma_cm"); |
e51060f0 SH |
4065 | if (!cma_wq) |
4066 | return -ENOMEM; | |
4067 | ||
4be74b42 HE |
4068 | ret = register_pernet_subsys(&cma_pernet_operations); |
4069 | if (ret) | |
4070 | goto err_wq; | |
4071 | ||
c1a0b23b | 4072 | ib_sa_register_client(&sa_client); |
7a118df3 | 4073 | rdma_addr_register_client(&addr_client); |
dd5bdff8 | 4074 | register_netdevice_notifier(&cma_nb); |
c1a0b23b | 4075 | |
e51060f0 SH |
4076 | ret = ib_register_client(&cma_client); |
4077 | if (ret) | |
4078 | goto err; | |
753f618a NM |
4079 | |
4080 | if (ibnl_add_client(RDMA_NL_RDMA_CM, RDMA_NL_RDMA_CM_NUM_OPS, cma_cb_table)) | |
4081 | printk(KERN_WARNING "RDMA CMA: failed to add netlink callback\n"); | |
4082 | ||
e51060f0 SH |
4083 | return 0; |
4084 | ||
4085 | err: | |
dd5bdff8 | 4086 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 4087 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 4088 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4089 | err_wq: |
e51060f0 SH |
4090 | destroy_workqueue(cma_wq); |
4091 | return ret; | |
4092 | } | |
4093 | ||
716abb1f | 4094 | static void __exit cma_cleanup(void) |
e51060f0 | 4095 | { |
753f618a | 4096 | ibnl_remove_client(RDMA_NL_RDMA_CM); |
e51060f0 | 4097 | ib_unregister_client(&cma_client); |
dd5bdff8 | 4098 | unregister_netdevice_notifier(&cma_nb); |
7a118df3 | 4099 | rdma_addr_unregister_client(&addr_client); |
c1a0b23b | 4100 | ib_sa_unregister_client(&sa_client); |
4be74b42 | 4101 | unregister_pernet_subsys(&cma_pernet_operations); |
e51060f0 | 4102 | destroy_workqueue(cma_wq); |
e51060f0 SH |
4103 | } |
4104 | ||
4105 | module_init(cma_init); | |
4106 | module_exit(cma_cleanup); |