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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; | |
24d44a39 SW |
49 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; |
50 | ||
51 | if (cm_id->remote_addr.ss_family != AF_INET) | |
52 | return -ENOSYS; | |
f94b533d TT |
53 | |
54 | ibqp = c2_get_qp(cm_id->device, iw_param->qpn); | |
55 | if (!ibqp) | |
56 | return -EINVAL; | |
57 | qp = to_c2qp(ibqp); | |
58 | ||
59 | /* Associate QP <--> CM_ID */ | |
60 | cm_id->provider_data = qp; | |
61 | cm_id->add_ref(cm_id); | |
62 | qp->cm_id = cm_id; | |
63 | ||
64 | /* | |
65 | * only support the max private_data length | |
66 | */ | |
67 | if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { | |
68 | err = -EINVAL; | |
69 | goto bail0; | |
70 | } | |
71 | /* | |
72 | * Set the rdma read limits | |
73 | */ | |
74 | err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); | |
75 | if (err) | |
76 | goto bail0; | |
77 | ||
78 | /* | |
79 | * Create and send a WR_QP_CONNECT... | |
80 | */ | |
81 | wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); | |
82 | if (!wr) { | |
83 | err = -ENOMEM; | |
84 | goto bail0; | |
85 | } | |
86 | ||
87 | vq_req = vq_req_alloc(c2dev); | |
88 | if (!vq_req) { | |
89 | err = -ENOMEM; | |
90 | goto bail1; | |
91 | } | |
92 | ||
93 | c2_wr_set_id(wr, CCWR_QP_CONNECT); | |
94 | wr->hdr.context = 0; | |
95 | wr->rnic_handle = c2dev->adapter_handle; | |
96 | wr->qp_handle = qp->adapter_handle; | |
97 | ||
24d44a39 SW |
98 | wr->remote_addr = raddr->sin_addr.s_addr; |
99 | wr->remote_port = raddr->sin_port; | |
f94b533d TT |
100 | |
101 | /* | |
102 | * Move any private data from the callers's buf into | |
103 | * the WR. | |
104 | */ | |
105 | if (iw_param->private_data) { | |
106 | wr->private_data_length = | |
107 | cpu_to_be32(iw_param->private_data_len); | |
108 | memcpy(&wr->private_data[0], iw_param->private_data, | |
109 | iw_param->private_data_len); | |
110 | } else | |
111 | wr->private_data_length = 0; | |
112 | ||
113 | /* | |
114 | * Send WR to adapter. NOTE: There is no synch reply from | |
115 | * the adapter. | |
116 | */ | |
117 | err = vq_send_wr(c2dev, (union c2wr *) wr); | |
118 | vq_req_free(c2dev, vq_req); | |
119 | ||
120 | bail1: | |
121 | kfree(wr); | |
122 | bail0: | |
123 | if (err) { | |
124 | /* | |
125 | * If we fail, release reference on QP and | |
126 | * disassociate QP from CM_ID | |
127 | */ | |
128 | cm_id->provider_data = NULL; | |
129 | qp->cm_id = NULL; | |
130 | cm_id->rem_ref(cm_id); | |
131 | } | |
132 | return err; | |
133 | } | |
134 | ||
135 | int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog) | |
136 | { | |
137 | struct c2_dev *c2dev; | |
138 | struct c2wr_ep_listen_create_req wr; | |
139 | struct c2wr_ep_listen_create_rep *reply; | |
140 | struct c2_vq_req *vq_req; | |
141 | int err; | |
24d44a39 SW |
142 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
143 | ||
144 | if (cm_id->local_addr.ss_family != AF_INET) | |
145 | return -ENOSYS; | |
f94b533d TT |
146 | |
147 | c2dev = to_c2dev(cm_id->device); | |
148 | if (c2dev == NULL) | |
149 | return -EINVAL; | |
150 | ||
151 | /* | |
152 | * Allocate verbs request. | |
153 | */ | |
154 | vq_req = vq_req_alloc(c2dev); | |
155 | if (!vq_req) | |
156 | return -ENOMEM; | |
157 | ||
158 | /* | |
159 | * Build the WR | |
160 | */ | |
161 | c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE); | |
162 | wr.hdr.context = (u64) (unsigned long) vq_req; | |
163 | wr.rnic_handle = c2dev->adapter_handle; | |
24d44a39 SW |
164 | wr.local_addr = laddr->sin_addr.s_addr; |
165 | wr.local_port = laddr->sin_port; | |
f94b533d TT |
166 | wr.backlog = cpu_to_be32(backlog); |
167 | wr.user_context = (u64) (unsigned long) cm_id; | |
168 | ||
169 | /* | |
170 | * Reference the request struct. Dereferenced in the int handler. | |
171 | */ | |
172 | vq_req_get(c2dev, vq_req); | |
173 | ||
174 | /* | |
175 | * Send WR to adapter | |
176 | */ | |
177 | err = vq_send_wr(c2dev, (union c2wr *) & wr); | |
178 | if (err) { | |
179 | vq_req_put(c2dev, vq_req); | |
180 | goto bail0; | |
181 | } | |
182 | ||
183 | /* | |
184 | * Wait for reply from adapter | |
185 | */ | |
186 | err = vq_wait_for_reply(c2dev, vq_req); | |
187 | if (err) | |
188 | goto bail0; | |
189 | ||
190 | /* | |
191 | * Process reply | |
192 | */ | |
193 | reply = | |
194 | (struct c2wr_ep_listen_create_rep *) (unsigned long) vq_req->reply_msg; | |
195 | if (!reply) { | |
196 | err = -ENOMEM; | |
197 | goto bail1; | |
198 | } | |
199 | ||
200 | if ((err = c2_errno(reply)) != 0) | |
201 | goto bail1; | |
202 | ||
203 | /* | |
204 | * Keep the adapter handle. Used in subsequent destroy | |
205 | */ | |
206 | cm_id->provider_data = (void*)(unsigned long) reply->ep_handle; | |
207 | ||
208 | /* | |
209 | * free vq stuff | |
210 | */ | |
211 | vq_repbuf_free(c2dev, reply); | |
212 | vq_req_free(c2dev, vq_req); | |
213 | ||
214 | return 0; | |
215 | ||
216 | bail1: | |
217 | vq_repbuf_free(c2dev, reply); | |
218 | bail0: | |
219 | vq_req_free(c2dev, vq_req); | |
220 | return err; | |
221 | } | |
222 | ||
223 | ||
224 | int c2_llp_service_destroy(struct iw_cm_id *cm_id) | |
225 | { | |
226 | ||
227 | struct c2_dev *c2dev; | |
228 | struct c2wr_ep_listen_destroy_req wr; | |
229 | struct c2wr_ep_listen_destroy_rep *reply; | |
230 | struct c2_vq_req *vq_req; | |
231 | int err; | |
232 | ||
233 | c2dev = to_c2dev(cm_id->device); | |
234 | if (c2dev == NULL) | |
235 | return -EINVAL; | |
236 | ||
237 | /* | |
238 | * Allocate verbs request. | |
239 | */ | |
240 | vq_req = vq_req_alloc(c2dev); | |
241 | if (!vq_req) | |
242 | return -ENOMEM; | |
243 | ||
244 | /* | |
245 | * Build the WR | |
246 | */ | |
247 | c2_wr_set_id(&wr, CCWR_EP_LISTEN_DESTROY); | |
248 | wr.hdr.context = (unsigned long) vq_req; | |
249 | wr.rnic_handle = c2dev->adapter_handle; | |
250 | wr.ep_handle = (u32)(unsigned long)cm_id->provider_data; | |
251 | ||
252 | /* | |
253 | * reference the request struct. dereferenced in the int handler. | |
254 | */ | |
255 | vq_req_get(c2dev, vq_req); | |
256 | ||
257 | /* | |
258 | * Send WR to adapter | |
259 | */ | |
260 | err = vq_send_wr(c2dev, (union c2wr *) & wr); | |
261 | if (err) { | |
262 | vq_req_put(c2dev, vq_req); | |
263 | goto bail0; | |
264 | } | |
265 | ||
266 | /* | |
267 | * Wait for reply from adapter | |
268 | */ | |
269 | err = vq_wait_for_reply(c2dev, vq_req); | |
270 | if (err) | |
271 | goto bail0; | |
272 | ||
273 | /* | |
274 | * Process reply | |
275 | */ | |
276 | reply=(struct c2wr_ep_listen_destroy_rep *)(unsigned long)vq_req->reply_msg; | |
277 | if (!reply) { | |
278 | err = -ENOMEM; | |
279 | goto bail0; | |
280 | } | |
281 | if ((err = c2_errno(reply)) != 0) | |
282 | goto bail1; | |
283 | ||
284 | bail1: | |
285 | vq_repbuf_free(c2dev, reply); | |
286 | bail0: | |
287 | vq_req_free(c2dev, vq_req); | |
288 | return err; | |
289 | } | |
290 | ||
291 | int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
292 | { | |
293 | struct c2_dev *c2dev = to_c2dev(cm_id->device); | |
294 | struct c2_qp *qp; | |
295 | struct ib_qp *ibqp; | |
296 | struct c2wr_cr_accept_req *wr; /* variable length WR */ | |
297 | struct c2_vq_req *vq_req; | |
298 | struct c2wr_cr_accept_rep *reply; /* VQ Reply msg ptr. */ | |
299 | int err; | |
300 | ||
301 | ibqp = c2_get_qp(cm_id->device, iw_param->qpn); | |
302 | if (!ibqp) | |
303 | return -EINVAL; | |
304 | qp = to_c2qp(ibqp); | |
305 | ||
306 | /* Set the RDMA read limits */ | |
307 | err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); | |
308 | if (err) | |
309 | goto bail0; | |
310 | ||
311 | /* Allocate verbs request. */ | |
312 | vq_req = vq_req_alloc(c2dev); | |
313 | if (!vq_req) { | |
314 | err = -ENOMEM; | |
44334bd9 | 315 | goto bail0; |
f94b533d TT |
316 | } |
317 | vq_req->qp = qp; | |
318 | vq_req->cm_id = cm_id; | |
319 | vq_req->event = IW_CM_EVENT_ESTABLISHED; | |
320 | ||
321 | wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); | |
322 | if (!wr) { | |
323 | err = -ENOMEM; | |
44334bd9 | 324 | goto bail1; |
f94b533d TT |
325 | } |
326 | ||
327 | /* Build the WR */ | |
328 | c2_wr_set_id(wr, CCWR_CR_ACCEPT); | |
329 | wr->hdr.context = (unsigned long) vq_req; | |
330 | wr->rnic_handle = c2dev->adapter_handle; | |
331 | wr->ep_handle = (u32) (unsigned long) cm_id->provider_data; | |
332 | wr->qp_handle = qp->adapter_handle; | |
333 | ||
334 | /* Replace the cr_handle with the QP after accept */ | |
335 | cm_id->provider_data = qp; | |
336 | cm_id->add_ref(cm_id); | |
337 | qp->cm_id = cm_id; | |
338 | ||
339 | cm_id->provider_data = qp; | |
340 | ||
341 | /* Validate private_data length */ | |
342 | if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { | |
343 | err = -EINVAL; | |
44334bd9 | 344 | goto bail1; |
f94b533d TT |
345 | } |
346 | ||
347 | if (iw_param->private_data) { | |
348 | wr->private_data_length = cpu_to_be32(iw_param->private_data_len); | |
349 | memcpy(&wr->private_data[0], | |
350 | iw_param->private_data, iw_param->private_data_len); | |
351 | } else | |
352 | wr->private_data_length = 0; | |
353 | ||
354 | /* Reference the request struct. Dereferenced in the int handler. */ | |
355 | vq_req_get(c2dev, vq_req); | |
356 | ||
357 | /* Send WR to adapter */ | |
358 | err = vq_send_wr(c2dev, (union c2wr *) wr); | |
359 | if (err) { | |
360 | vq_req_put(c2dev, vq_req); | |
44334bd9 | 361 | goto bail1; |
f94b533d TT |
362 | } |
363 | ||
364 | /* Wait for reply from adapter */ | |
365 | err = vq_wait_for_reply(c2dev, vq_req); | |
366 | if (err) | |
44334bd9 | 367 | goto bail1; |
f94b533d TT |
368 | |
369 | /* Check that reply is present */ | |
370 | reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg; | |
371 | if (!reply) { | |
372 | err = -ENOMEM; | |
44334bd9 | 373 | goto bail1; |
f94b533d TT |
374 | } |
375 | ||
376 | err = c2_errno(reply); | |
377 | vq_repbuf_free(c2dev, reply); | |
378 | ||
379 | if (!err) | |
380 | c2_set_qp_state(qp, C2_QP_STATE_RTS); | |
f94b533d | 381 | bail1: |
44334bd9 | 382 | kfree(wr); |
f94b533d TT |
383 | vq_req_free(c2dev, vq_req); |
384 | bail0: | |
385 | if (err) { | |
386 | /* | |
387 | * If we fail, release reference on QP and | |
388 | * disassociate QP from CM_ID | |
389 | */ | |
390 | cm_id->provider_data = NULL; | |
391 | qp->cm_id = NULL; | |
392 | cm_id->rem_ref(cm_id); | |
393 | } | |
394 | return err; | |
395 | } | |
396 | ||
397 | int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
398 | { | |
399 | struct c2_dev *c2dev; | |
400 | struct c2wr_cr_reject_req wr; | |
401 | struct c2_vq_req *vq_req; | |
402 | struct c2wr_cr_reject_rep *reply; | |
403 | int err; | |
404 | ||
405 | c2dev = to_c2dev(cm_id->device); | |
406 | ||
407 | /* | |
408 | * Allocate verbs request. | |
409 | */ | |
410 | vq_req = vq_req_alloc(c2dev); | |
411 | if (!vq_req) | |
412 | return -ENOMEM; | |
413 | ||
414 | /* | |
415 | * Build the WR | |
416 | */ | |
417 | c2_wr_set_id(&wr, CCWR_CR_REJECT); | |
418 | wr.hdr.context = (unsigned long) vq_req; | |
419 | wr.rnic_handle = c2dev->adapter_handle; | |
420 | wr.ep_handle = (u32) (unsigned long) cm_id->provider_data; | |
421 | ||
422 | /* | |
423 | * reference the request struct. dereferenced in the int handler. | |
424 | */ | |
425 | vq_req_get(c2dev, vq_req); | |
426 | ||
427 | /* | |
428 | * Send WR to adapter | |
429 | */ | |
430 | err = vq_send_wr(c2dev, (union c2wr *) & wr); | |
431 | if (err) { | |
432 | vq_req_put(c2dev, vq_req); | |
433 | goto bail0; | |
434 | } | |
435 | ||
436 | /* | |
437 | * Wait for reply from adapter | |
438 | */ | |
439 | err = vq_wait_for_reply(c2dev, vq_req); | |
440 | if (err) | |
441 | goto bail0; | |
442 | ||
443 | /* | |
444 | * Process reply | |
445 | */ | |
446 | reply = (struct c2wr_cr_reject_rep *) (unsigned long) | |
447 | vq_req->reply_msg; | |
448 | if (!reply) { | |
449 | err = -ENOMEM; | |
450 | goto bail0; | |
451 | } | |
452 | err = c2_errno(reply); | |
453 | /* | |
454 | * free vq stuff | |
455 | */ | |
456 | vq_repbuf_free(c2dev, reply); | |
457 | ||
458 | bail0: | |
459 | vq_req_free(c2dev, vq_req); | |
460 | return err; | |
461 | } |