Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 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 | */ |
| 34 | #include "c2.h" |
| 35 | #include "c2_wr.h" |
| 36 | #include "c2_vq.h" |
| 37 | #include <rdma/iw_cm.h> |
| 38 | |
| 39 | int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) |
| 40 | { |
| 41 | struct c2_dev *c2dev = to_c2dev(cm_id->device); |
| 42 | struct ib_qp *ibqp; |
| 43 | struct c2_qp *qp; |
| 44 | struct c2wr_qp_connect_req *wr; /* variable size needs a malloc. */ |
| 45 | struct c2_vq_req *vq_req; |
| 46 | int err; |
| 47 | |
| 48 | ibqp = c2_get_qp(cm_id->device, iw_param->qpn); |
| 49 | if (!ibqp) |
| 50 | return -EINVAL; |
| 51 | qp = to_c2qp(ibqp); |
| 52 | |
| 53 | /* Associate QP <--> CM_ID */ |
| 54 | cm_id->provider_data = qp; |
| 55 | cm_id->add_ref(cm_id); |
| 56 | qp->cm_id = cm_id; |
| 57 | |
| 58 | /* |
| 59 | * only support the max private_data length |
| 60 | */ |
| 61 | if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { |
| 62 | err = -EINVAL; |
| 63 | goto bail0; |
| 64 | } |
| 65 | /* |
| 66 | * Set the rdma read limits |
| 67 | */ |
| 68 | err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); |
| 69 | if (err) |
| 70 | goto bail0; |
| 71 | |
| 72 | /* |
| 73 | * Create and send a WR_QP_CONNECT... |
| 74 | */ |
| 75 | wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); |
| 76 | if (!wr) { |
| 77 | err = -ENOMEM; |
| 78 | goto bail0; |
| 79 | } |
| 80 | |
| 81 | vq_req = vq_req_alloc(c2dev); |
| 82 | if (!vq_req) { |
| 83 | err = -ENOMEM; |
| 84 | goto bail1; |
| 85 | } |
| 86 | |
| 87 | c2_wr_set_id(wr, CCWR_QP_CONNECT); |
| 88 | wr->hdr.context = 0; |
| 89 | wr->rnic_handle = c2dev->adapter_handle; |
| 90 | wr->qp_handle = qp->adapter_handle; |
| 91 | |
| 92 | wr->remote_addr = cm_id->remote_addr.sin_addr.s_addr; |
| 93 | wr->remote_port = cm_id->remote_addr.sin_port; |
| 94 | |
| 95 | /* |
| 96 | * Move any private data from the callers's buf into |
| 97 | * the WR. |
| 98 | */ |
| 99 | if (iw_param->private_data) { |
| 100 | wr->private_data_length = |
| 101 | cpu_to_be32(iw_param->private_data_len); |
| 102 | memcpy(&wr->private_data[0], iw_param->private_data, |
| 103 | iw_param->private_data_len); |
| 104 | } else |
| 105 | wr->private_data_length = 0; |
| 106 | |
| 107 | /* |
| 108 | * Send WR to adapter. NOTE: There is no synch reply from |
| 109 | * the adapter. |
| 110 | */ |
| 111 | err = vq_send_wr(c2dev, (union c2wr *) wr); |
| 112 | vq_req_free(c2dev, vq_req); |
| 113 | |
| 114 | bail1: |
| 115 | kfree(wr); |
| 116 | bail0: |
| 117 | if (err) { |
| 118 | /* |
| 119 | * If we fail, release reference on QP and |
| 120 | * disassociate QP from CM_ID |
| 121 | */ |
| 122 | cm_id->provider_data = NULL; |
| 123 | qp->cm_id = NULL; |
| 124 | cm_id->rem_ref(cm_id); |
| 125 | } |
| 126 | return err; |
| 127 | } |
| 128 | |
| 129 | int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog) |
| 130 | { |
| 131 | struct c2_dev *c2dev; |
| 132 | struct c2wr_ep_listen_create_req wr; |
| 133 | struct c2wr_ep_listen_create_rep *reply; |
| 134 | struct c2_vq_req *vq_req; |
| 135 | int err; |
| 136 | |
| 137 | c2dev = to_c2dev(cm_id->device); |
| 138 | if (c2dev == NULL) |
| 139 | return -EINVAL; |
| 140 | |
| 141 | /* |
| 142 | * Allocate verbs request. |
| 143 | */ |
| 144 | vq_req = vq_req_alloc(c2dev); |
| 145 | if (!vq_req) |
| 146 | return -ENOMEM; |
| 147 | |
| 148 | /* |
| 149 | * Build the WR |
| 150 | */ |
| 151 | c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE); |
| 152 | wr.hdr.context = (u64) (unsigned long) vq_req; |
| 153 | wr.rnic_handle = c2dev->adapter_handle; |
| 154 | wr.local_addr = cm_id->local_addr.sin_addr.s_addr; |
| 155 | wr.local_port = cm_id->local_addr.sin_port; |
| 156 | wr.backlog = cpu_to_be32(backlog); |
| 157 | wr.user_context = (u64) (unsigned long) cm_id; |
| 158 | |
| 159 | /* |
| 160 | * Reference the request struct. Dereferenced in the int handler. |
| 161 | */ |
| 162 | vq_req_get(c2dev, vq_req); |
| 163 | |
| 164 | /* |
| 165 | * Send WR to adapter |
| 166 | */ |
| 167 | err = vq_send_wr(c2dev, (union c2wr *) & wr); |
| 168 | if (err) { |
| 169 | vq_req_put(c2dev, vq_req); |
| 170 | goto bail0; |
| 171 | } |
| 172 | |
| 173 | /* |
| 174 | * Wait for reply from adapter |
| 175 | */ |
| 176 | err = vq_wait_for_reply(c2dev, vq_req); |
| 177 | if (err) |
| 178 | goto bail0; |
| 179 | |
| 180 | /* |
| 181 | * Process reply |
| 182 | */ |
| 183 | reply = |
| 184 | (struct c2wr_ep_listen_create_rep *) (unsigned long) vq_req->reply_msg; |
| 185 | if (!reply) { |
| 186 | err = -ENOMEM; |
| 187 | goto bail1; |
| 188 | } |
| 189 | |
| 190 | if ((err = c2_errno(reply)) != 0) |
| 191 | goto bail1; |
| 192 | |
| 193 | /* |
| 194 | * Keep the adapter handle. Used in subsequent destroy |
| 195 | */ |
| 196 | cm_id->provider_data = (void*)(unsigned long) reply->ep_handle; |
| 197 | |
| 198 | /* |
| 199 | * free vq stuff |
| 200 | */ |
| 201 | vq_repbuf_free(c2dev, reply); |
| 202 | vq_req_free(c2dev, vq_req); |
| 203 | |
| 204 | return 0; |
| 205 | |
| 206 | bail1: |
| 207 | vq_repbuf_free(c2dev, reply); |
| 208 | bail0: |
| 209 | vq_req_free(c2dev, vq_req); |
| 210 | return err; |
| 211 | } |
| 212 | |
| 213 | |
| 214 | int c2_llp_service_destroy(struct iw_cm_id *cm_id) |
| 215 | { |
| 216 | |
| 217 | struct c2_dev *c2dev; |
| 218 | struct c2wr_ep_listen_destroy_req wr; |
| 219 | struct c2wr_ep_listen_destroy_rep *reply; |
| 220 | struct c2_vq_req *vq_req; |
| 221 | int err; |
| 222 | |
| 223 | c2dev = to_c2dev(cm_id->device); |
| 224 | if (c2dev == NULL) |
| 225 | return -EINVAL; |
| 226 | |
| 227 | /* |
| 228 | * Allocate verbs request. |
| 229 | */ |
| 230 | vq_req = vq_req_alloc(c2dev); |
| 231 | if (!vq_req) |
| 232 | return -ENOMEM; |
| 233 | |
| 234 | /* |
| 235 | * Build the WR |
| 236 | */ |
| 237 | c2_wr_set_id(&wr, CCWR_EP_LISTEN_DESTROY); |
| 238 | wr.hdr.context = (unsigned long) vq_req; |
| 239 | wr.rnic_handle = c2dev->adapter_handle; |
| 240 | wr.ep_handle = (u32)(unsigned long)cm_id->provider_data; |
| 241 | |
| 242 | /* |
| 243 | * reference the request struct. dereferenced in the int handler. |
| 244 | */ |
| 245 | vq_req_get(c2dev, vq_req); |
| 246 | |
| 247 | /* |
| 248 | * Send WR to adapter |
| 249 | */ |
| 250 | err = vq_send_wr(c2dev, (union c2wr *) & wr); |
| 251 | if (err) { |
| 252 | vq_req_put(c2dev, vq_req); |
| 253 | goto bail0; |
| 254 | } |
| 255 | |
| 256 | /* |
| 257 | * Wait for reply from adapter |
| 258 | */ |
| 259 | err = vq_wait_for_reply(c2dev, vq_req); |
| 260 | if (err) |
| 261 | goto bail0; |
| 262 | |
| 263 | /* |
| 264 | * Process reply |
| 265 | */ |
| 266 | reply=(struct c2wr_ep_listen_destroy_rep *)(unsigned long)vq_req->reply_msg; |
| 267 | if (!reply) { |
| 268 | err = -ENOMEM; |
| 269 | goto bail0; |
| 270 | } |
| 271 | if ((err = c2_errno(reply)) != 0) |
| 272 | goto bail1; |
| 273 | |
| 274 | bail1: |
| 275 | vq_repbuf_free(c2dev, reply); |
| 276 | bail0: |
| 277 | vq_req_free(c2dev, vq_req); |
| 278 | return err; |
| 279 | } |
| 280 | |
| 281 | int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) |
| 282 | { |
| 283 | struct c2_dev *c2dev = to_c2dev(cm_id->device); |
| 284 | struct c2_qp *qp; |
| 285 | struct ib_qp *ibqp; |
| 286 | struct c2wr_cr_accept_req *wr; /* variable length WR */ |
| 287 | struct c2_vq_req *vq_req; |
| 288 | struct c2wr_cr_accept_rep *reply; /* VQ Reply msg ptr. */ |
| 289 | int err; |
| 290 | |
| 291 | ibqp = c2_get_qp(cm_id->device, iw_param->qpn); |
| 292 | if (!ibqp) |
| 293 | return -EINVAL; |
| 294 | qp = to_c2qp(ibqp); |
| 295 | |
| 296 | /* Set the RDMA read limits */ |
| 297 | err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird); |
| 298 | if (err) |
| 299 | goto bail0; |
| 300 | |
| 301 | /* Allocate verbs request. */ |
| 302 | vq_req = vq_req_alloc(c2dev); |
| 303 | if (!vq_req) { |
| 304 | err = -ENOMEM; |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 305 | goto bail0; |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 306 | } |
| 307 | vq_req->qp = qp; |
| 308 | vq_req->cm_id = cm_id; |
| 309 | vq_req->event = IW_CM_EVENT_ESTABLISHED; |
| 310 | |
| 311 | wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL); |
| 312 | if (!wr) { |
| 313 | err = -ENOMEM; |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 314 | goto bail1; |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | /* Build the WR */ |
| 318 | c2_wr_set_id(wr, CCWR_CR_ACCEPT); |
| 319 | wr->hdr.context = (unsigned long) vq_req; |
| 320 | wr->rnic_handle = c2dev->adapter_handle; |
| 321 | wr->ep_handle = (u32) (unsigned long) cm_id->provider_data; |
| 322 | wr->qp_handle = qp->adapter_handle; |
| 323 | |
| 324 | /* Replace the cr_handle with the QP after accept */ |
| 325 | cm_id->provider_data = qp; |
| 326 | cm_id->add_ref(cm_id); |
| 327 | qp->cm_id = cm_id; |
| 328 | |
| 329 | cm_id->provider_data = qp; |
| 330 | |
| 331 | /* Validate private_data length */ |
| 332 | if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) { |
| 333 | err = -EINVAL; |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 334 | goto bail1; |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | if (iw_param->private_data) { |
| 338 | wr->private_data_length = cpu_to_be32(iw_param->private_data_len); |
| 339 | memcpy(&wr->private_data[0], |
| 340 | iw_param->private_data, iw_param->private_data_len); |
| 341 | } else |
| 342 | wr->private_data_length = 0; |
| 343 | |
| 344 | /* Reference the request struct. Dereferenced in the int handler. */ |
| 345 | vq_req_get(c2dev, vq_req); |
| 346 | |
| 347 | /* Send WR to adapter */ |
| 348 | err = vq_send_wr(c2dev, (union c2wr *) wr); |
| 349 | if (err) { |
| 350 | vq_req_put(c2dev, vq_req); |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 351 | goto bail1; |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | /* Wait for reply from adapter */ |
| 355 | err = vq_wait_for_reply(c2dev, vq_req); |
| 356 | if (err) |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 357 | goto bail1; |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 358 | |
| 359 | /* Check that reply is present */ |
| 360 | reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg; |
| 361 | if (!reply) { |
| 362 | err = -ENOMEM; |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 363 | goto bail1; |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | err = c2_errno(reply); |
| 367 | vq_repbuf_free(c2dev, reply); |
| 368 | |
| 369 | if (!err) |
| 370 | c2_set_qp_state(qp, C2_QP_STATE_RTS); |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 371 | bail1: |
Eric Sesterhenn | 44334bd | 2006-09-28 10:38:32 -0700 | [diff] [blame] | 372 | kfree(wr); |
Tom Tucker | f94b533 | 2006-09-22 15:22:48 -0700 | [diff] [blame] | 373 | vq_req_free(c2dev, vq_req); |
| 374 | bail0: |
| 375 | if (err) { |
| 376 | /* |
| 377 | * If we fail, release reference on QP and |
| 378 | * disassociate QP from CM_ID |
| 379 | */ |
| 380 | cm_id->provider_data = NULL; |
| 381 | qp->cm_id = NULL; |
| 382 | cm_id->rem_ref(cm_id); |
| 383 | } |
| 384 | return err; |
| 385 | } |
| 386 | |
| 387 | int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
| 388 | { |
| 389 | struct c2_dev *c2dev; |
| 390 | struct c2wr_cr_reject_req wr; |
| 391 | struct c2_vq_req *vq_req; |
| 392 | struct c2wr_cr_reject_rep *reply; |
| 393 | int err; |
| 394 | |
| 395 | c2dev = to_c2dev(cm_id->device); |
| 396 | |
| 397 | /* |
| 398 | * Allocate verbs request. |
| 399 | */ |
| 400 | vq_req = vq_req_alloc(c2dev); |
| 401 | if (!vq_req) |
| 402 | return -ENOMEM; |
| 403 | |
| 404 | /* |
| 405 | * Build the WR |
| 406 | */ |
| 407 | c2_wr_set_id(&wr, CCWR_CR_REJECT); |
| 408 | wr.hdr.context = (unsigned long) vq_req; |
| 409 | wr.rnic_handle = c2dev->adapter_handle; |
| 410 | wr.ep_handle = (u32) (unsigned long) cm_id->provider_data; |
| 411 | |
| 412 | /* |
| 413 | * reference the request struct. dereferenced in the int handler. |
| 414 | */ |
| 415 | vq_req_get(c2dev, vq_req); |
| 416 | |
| 417 | /* |
| 418 | * Send WR to adapter |
| 419 | */ |
| 420 | err = vq_send_wr(c2dev, (union c2wr *) & wr); |
| 421 | if (err) { |
| 422 | vq_req_put(c2dev, vq_req); |
| 423 | goto bail0; |
| 424 | } |
| 425 | |
| 426 | /* |
| 427 | * Wait for reply from adapter |
| 428 | */ |
| 429 | err = vq_wait_for_reply(c2dev, vq_req); |
| 430 | if (err) |
| 431 | goto bail0; |
| 432 | |
| 433 | /* |
| 434 | * Process reply |
| 435 | */ |
| 436 | reply = (struct c2wr_cr_reject_rep *) (unsigned long) |
| 437 | vq_req->reply_msg; |
| 438 | if (!reply) { |
| 439 | err = -ENOMEM; |
| 440 | goto bail0; |
| 441 | } |
| 442 | err = c2_errno(reply); |
| 443 | /* |
| 444 | * free vq stuff |
| 445 | */ |
| 446 | vq_repbuf_free(c2dev, reply); |
| 447 | |
| 448 | bail0: |
| 449 | vq_req_free(c2dev, vq_req); |
| 450 | return err; |
| 451 | } |