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f94b533d TT |
1 | /* |
2 | * Copyright (c) 2005 Ammasso, Inc. All rights reserved. | |
3 | * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. | |
4 | * | |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | * | |
33 | */ | |
5a0e3ad6 TH |
34 | #include <linux/slab.h> |
35 | ||
f94b533d TT |
36 | #include "c2.h" |
37 | #include "c2_wr.h" | |
38 | #include "c2_vq.h" | |
39 | #include <rdma/iw_cm.h> | |
40 | ||
41 | int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
42 | { | |
43 | struct c2_dev *c2dev = to_c2dev(cm_id->device); | |
44 | struct ib_qp *ibqp; | |
45 | struct c2_qp *qp; | |
46 | struct c2wr_qp_connect_req *wr; /* variable size needs a malloc. */ | |
47 | struct c2_vq_req *vq_req; | |
48 | int err; | |
49 | ||
50 | ibqp = c2_get_qp(cm_id->device, iw_param->qpn); | |
51 | if (!ibqp) | |
52 | return -EINVAL; | |
53 | qp = to_c2qp(ibqp); | |
54 | ||
55 | /* Associate QP <--> CM_ID */ | |
56 | cm_id->provider_data = qp; | |
57 | cm_id->add_ref(cm_id); | |
58 | qp->cm_id = cm_id; | |
59 | ||
60 | /* | |
61 | * only support the max private_data length | |
62 | */ | |
63 | if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { | |
64 | err = -EINVAL; | |
65 | goto bail0; | |
66 | } | |
67 | /* | |
68 | * Set the rdma read limits | |
69 | */ | |
70 | err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); | |
71 | if (err) | |
72 | goto bail0; | |
73 | ||
74 | /* | |
75 | * Create and send a WR_QP_CONNECT... | |
76 | */ | |
77 | wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); | |
78 | if (!wr) { | |
79 | err = -ENOMEM; | |
80 | goto bail0; | |
81 | } | |
82 | ||
83 | vq_req = vq_req_alloc(c2dev); | |
84 | if (!vq_req) { | |
85 | err = -ENOMEM; | |
86 | goto bail1; | |
87 | } | |
88 | ||
89 | c2_wr_set_id(wr, CCWR_QP_CONNECT); | |
90 | wr->hdr.context = 0; | |
91 | wr->rnic_handle = c2dev->adapter_handle; | |
92 | wr->qp_handle = qp->adapter_handle; | |
93 | ||
94 | wr->remote_addr = cm_id->remote_addr.sin_addr.s_addr; | |
95 | wr->remote_port = cm_id->remote_addr.sin_port; | |
96 | ||
97 | /* | |
98 | * Move any private data from the callers's buf into | |
99 | * the WR. | |
100 | */ | |
101 | if (iw_param->private_data) { | |
102 | wr->private_data_length = | |
103 | cpu_to_be32(iw_param->private_data_len); | |
104 | memcpy(&wr->private_data[0], iw_param->private_data, | |
105 | iw_param->private_data_len); | |
106 | } else | |
107 | wr->private_data_length = 0; | |
108 | ||
109 | /* | |
110 | * Send WR to adapter. NOTE: There is no synch reply from | |
111 | * the adapter. | |
112 | */ | |
113 | err = vq_send_wr(c2dev, (union c2wr *) wr); | |
114 | vq_req_free(c2dev, vq_req); | |
115 | ||
116 | bail1: | |
117 | kfree(wr); | |
118 | bail0: | |
119 | if (err) { | |
120 | /* | |
121 | * If we fail, release reference on QP and | |
122 | * disassociate QP from CM_ID | |
123 | */ | |
124 | cm_id->provider_data = NULL; | |
125 | qp->cm_id = NULL; | |
126 | cm_id->rem_ref(cm_id); | |
127 | } | |
128 | return err; | |
129 | } | |
130 | ||
131 | int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog) | |
132 | { | |
133 | struct c2_dev *c2dev; | |
134 | struct c2wr_ep_listen_create_req wr; | |
135 | struct c2wr_ep_listen_create_rep *reply; | |
136 | struct c2_vq_req *vq_req; | |
137 | int err; | |
138 | ||
139 | c2dev = to_c2dev(cm_id->device); | |
140 | if (c2dev == NULL) | |
141 | return -EINVAL; | |
142 | ||
143 | /* | |
144 | * Allocate verbs request. | |
145 | */ | |
146 | vq_req = vq_req_alloc(c2dev); | |
147 | if (!vq_req) | |
148 | return -ENOMEM; | |
149 | ||
150 | /* | |
151 | * Build the WR | |
152 | */ | |
153 | c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE); | |
154 | wr.hdr.context = (u64) (unsigned long) vq_req; | |
155 | wr.rnic_handle = c2dev->adapter_handle; | |
156 | wr.local_addr = cm_id->local_addr.sin_addr.s_addr; | |
157 | wr.local_port = cm_id->local_addr.sin_port; | |
158 | wr.backlog = cpu_to_be32(backlog); | |
159 | wr.user_context = (u64) (unsigned long) cm_id; | |
160 | ||
161 | /* | |
162 | * Reference the request struct. Dereferenced in the int handler. | |
163 | */ | |
164 | vq_req_get(c2dev, vq_req); | |
165 | ||
166 | /* | |
167 | * Send WR to adapter | |
168 | */ | |
169 | err = vq_send_wr(c2dev, (union c2wr *) & wr); | |
170 | if (err) { | |
171 | vq_req_put(c2dev, vq_req); | |
172 | goto bail0; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Wait for reply from adapter | |
177 | */ | |
178 | err = vq_wait_for_reply(c2dev, vq_req); | |
179 | if (err) | |
180 | goto bail0; | |
181 | ||
182 | /* | |
183 | * Process reply | |
184 | */ | |
185 | reply = | |
186 | (struct c2wr_ep_listen_create_rep *) (unsigned long) vq_req->reply_msg; | |
187 | if (!reply) { | |
188 | err = -ENOMEM; | |
189 | goto bail1; | |
190 | } | |
191 | ||
192 | if ((err = c2_errno(reply)) != 0) | |
193 | goto bail1; | |
194 | ||
195 | /* | |
196 | * Keep the adapter handle. Used in subsequent destroy | |
197 | */ | |
198 | cm_id->provider_data = (void*)(unsigned long) reply->ep_handle; | |
199 | ||
200 | /* | |
201 | * free vq stuff | |
202 | */ | |
203 | vq_repbuf_free(c2dev, reply); | |
204 | vq_req_free(c2dev, vq_req); | |
205 | ||
206 | return 0; | |
207 | ||
208 | bail1: | |
209 | vq_repbuf_free(c2dev, reply); | |
210 | bail0: | |
211 | vq_req_free(c2dev, vq_req); | |
212 | return err; | |
213 | } | |
214 | ||
215 | ||
216 | int c2_llp_service_destroy(struct iw_cm_id *cm_id) | |
217 | { | |
218 | ||
219 | struct c2_dev *c2dev; | |
220 | struct c2wr_ep_listen_destroy_req wr; | |
221 | struct c2wr_ep_listen_destroy_rep *reply; | |
222 | struct c2_vq_req *vq_req; | |
223 | int err; | |
224 | ||
225 | c2dev = to_c2dev(cm_id->device); | |
226 | if (c2dev == NULL) | |
227 | return -EINVAL; | |
228 | ||
229 | /* | |
230 | * Allocate verbs request. | |
231 | */ | |
232 | vq_req = vq_req_alloc(c2dev); | |
233 | if (!vq_req) | |
234 | return -ENOMEM; | |
235 | ||
236 | /* | |
237 | * Build the WR | |
238 | */ | |
239 | c2_wr_set_id(&wr, CCWR_EP_LISTEN_DESTROY); | |
240 | wr.hdr.context = (unsigned long) vq_req; | |
241 | wr.rnic_handle = c2dev->adapter_handle; | |
242 | wr.ep_handle = (u32)(unsigned long)cm_id->provider_data; | |
243 | ||
244 | /* | |
245 | * reference the request struct. dereferenced in the int handler. | |
246 | */ | |
247 | vq_req_get(c2dev, vq_req); | |
248 | ||
249 | /* | |
250 | * Send WR to adapter | |
251 | */ | |
252 | err = vq_send_wr(c2dev, (union c2wr *) & wr); | |
253 | if (err) { | |
254 | vq_req_put(c2dev, vq_req); | |
255 | goto bail0; | |
256 | } | |
257 | ||
258 | /* | |
259 | * Wait for reply from adapter | |
260 | */ | |
261 | err = vq_wait_for_reply(c2dev, vq_req); | |
262 | if (err) | |
263 | goto bail0; | |
264 | ||
265 | /* | |
266 | * Process reply | |
267 | */ | |
268 | reply=(struct c2wr_ep_listen_destroy_rep *)(unsigned long)vq_req->reply_msg; | |
269 | if (!reply) { | |
270 | err = -ENOMEM; | |
271 | goto bail0; | |
272 | } | |
273 | if ((err = c2_errno(reply)) != 0) | |
274 | goto bail1; | |
275 | ||
276 | bail1: | |
277 | vq_repbuf_free(c2dev, reply); | |
278 | bail0: | |
279 | vq_req_free(c2dev, vq_req); | |
280 | return err; | |
281 | } | |
282 | ||
283 | int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
284 | { | |
285 | struct c2_dev *c2dev = to_c2dev(cm_id->device); | |
286 | struct c2_qp *qp; | |
287 | struct ib_qp *ibqp; | |
288 | struct c2wr_cr_accept_req *wr; /* variable length WR */ | |
289 | struct c2_vq_req *vq_req; | |
290 | struct c2wr_cr_accept_rep *reply; /* VQ Reply msg ptr. */ | |
291 | int err; | |
292 | ||
293 | ibqp = c2_get_qp(cm_id->device, iw_param->qpn); | |
294 | if (!ibqp) | |
295 | return -EINVAL; | |
296 | qp = to_c2qp(ibqp); | |
297 | ||
298 | /* Set the RDMA read limits */ | |
299 | err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); | |
300 | if (err) | |
301 | goto bail0; | |
302 | ||
303 | /* Allocate verbs request. */ | |
304 | vq_req = vq_req_alloc(c2dev); | |
305 | if (!vq_req) { | |
306 | err = -ENOMEM; | |
44334bd9 | 307 | goto bail0; |
f94b533d TT |
308 | } |
309 | vq_req->qp = qp; | |
310 | vq_req->cm_id = cm_id; | |
311 | vq_req->event = IW_CM_EVENT_ESTABLISHED; | |
312 | ||
313 | wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); | |
314 | if (!wr) { | |
315 | err = -ENOMEM; | |
44334bd9 | 316 | goto bail1; |
f94b533d TT |
317 | } |
318 | ||
319 | /* Build the WR */ | |
320 | c2_wr_set_id(wr, CCWR_CR_ACCEPT); | |
321 | wr->hdr.context = (unsigned long) vq_req; | |
322 | wr->rnic_handle = c2dev->adapter_handle; | |
323 | wr->ep_handle = (u32) (unsigned long) cm_id->provider_data; | |
324 | wr->qp_handle = qp->adapter_handle; | |
325 | ||
326 | /* Replace the cr_handle with the QP after accept */ | |
327 | cm_id->provider_data = qp; | |
328 | cm_id->add_ref(cm_id); | |
329 | qp->cm_id = cm_id; | |
330 | ||
331 | cm_id->provider_data = qp; | |
332 | ||
333 | /* Validate private_data length */ | |
334 | if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { | |
335 | err = -EINVAL; | |
44334bd9 | 336 | goto bail1; |
f94b533d TT |
337 | } |
338 | ||
339 | if (iw_param->private_data) { | |
340 | wr->private_data_length = cpu_to_be32(iw_param->private_data_len); | |
341 | memcpy(&wr->private_data[0], | |
342 | iw_param->private_data, iw_param->private_data_len); | |
343 | } else | |
344 | wr->private_data_length = 0; | |
345 | ||
346 | /* Reference the request struct. Dereferenced in the int handler. */ | |
347 | vq_req_get(c2dev, vq_req); | |
348 | ||
349 | /* Send WR to adapter */ | |
350 | err = vq_send_wr(c2dev, (union c2wr *) wr); | |
351 | if (err) { | |
352 | vq_req_put(c2dev, vq_req); | |
44334bd9 | 353 | goto bail1; |
f94b533d TT |
354 | } |
355 | ||
356 | /* Wait for reply from adapter */ | |
357 | err = vq_wait_for_reply(c2dev, vq_req); | |
358 | if (err) | |
44334bd9 | 359 | goto bail1; |
f94b533d TT |
360 | |
361 | /* Check that reply is present */ | |
362 | reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg; | |
363 | if (!reply) { | |
364 | err = -ENOMEM; | |
44334bd9 | 365 | goto bail1; |
f94b533d TT |
366 | } |
367 | ||
368 | err = c2_errno(reply); | |
369 | vq_repbuf_free(c2dev, reply); | |
370 | ||
371 | if (!err) | |
372 | c2_set_qp_state(qp, C2_QP_STATE_RTS); | |
f94b533d | 373 | bail1: |
44334bd9 | 374 | kfree(wr); |
f94b533d TT |
375 | vq_req_free(c2dev, vq_req); |
376 | bail0: | |
377 | if (err) { | |
378 | /* | |
379 | * If we fail, release reference on QP and | |
380 | * disassociate QP from CM_ID | |
381 | */ | |
382 | cm_id->provider_data = NULL; | |
383 | qp->cm_id = NULL; | |
384 | cm_id->rem_ref(cm_id); | |
385 | } | |
386 | return err; | |
387 | } | |
388 | ||
389 | int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
390 | { | |
391 | struct c2_dev *c2dev; | |
392 | struct c2wr_cr_reject_req wr; | |
393 | struct c2_vq_req *vq_req; | |
394 | struct c2wr_cr_reject_rep *reply; | |
395 | int err; | |
396 | ||
397 | c2dev = to_c2dev(cm_id->device); | |
398 | ||
399 | /* | |
400 | * Allocate verbs request. | |
401 | */ | |
402 | vq_req = vq_req_alloc(c2dev); | |
403 | if (!vq_req) | |
404 | return -ENOMEM; | |
405 | ||
406 | /* | |
407 | * Build the WR | |
408 | */ | |
409 | c2_wr_set_id(&wr, CCWR_CR_REJECT); | |
410 | wr.hdr.context = (unsigned long) vq_req; | |
411 | wr.rnic_handle = c2dev->adapter_handle; | |
412 | wr.ep_handle = (u32) (unsigned long) cm_id->provider_data; | |
413 | ||
414 | /* | |
415 | * reference the request struct. dereferenced in the int handler. | |
416 | */ | |
417 | vq_req_get(c2dev, vq_req); | |
418 | ||
419 | /* | |
420 | * Send WR to adapter | |
421 | */ | |
422 | err = vq_send_wr(c2dev, (union c2wr *) & wr); | |
423 | if (err) { | |
424 | vq_req_put(c2dev, vq_req); | |
425 | goto bail0; | |
426 | } | |
427 | ||
428 | /* | |
429 | * Wait for reply from adapter | |
430 | */ | |
431 | err = vq_wait_for_reply(c2dev, vq_req); | |
432 | if (err) | |
433 | goto bail0; | |
434 | ||
435 | /* | |
436 | * Process reply | |
437 | */ | |
438 | reply = (struct c2wr_cr_reject_rep *) (unsigned long) | |
439 | vq_req->reply_msg; | |
440 | if (!reply) { | |
441 | err = -ENOMEM; | |
442 | goto bail0; | |
443 | } | |
444 | err = c2_errno(reply); | |
445 | /* | |
446 | * free vq stuff | |
447 | */ | |
448 | vq_repbuf_free(c2dev, reply); | |
449 | ||
450 | bail0: | |
451 | vq_req_free(c2dev, vq_req); | |
452 | return err; | |
453 | } |