1 /* 2 * Copyright (c) 2004 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Voltaire, Inc. All rights reserved. 4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 5 * Copyright (c) 2008 Cisco. All rights reserved. 6 * 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: 12 * 13 * Redistribution and use in source and binary forms, with or 14 * without modification, are permitted provided that the following 15 * conditions are met: 16 * 17 * - Redistributions of source code must retain the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer. 20 * 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. 25 * 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. 34 */ 35 36 #define pr_fmt(fmt) "user_mad: " fmt 37 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/device.h> 41 #include <linux/err.h> 42 #include <linux/fs.h> 43 #include <linux/cdev.h> 44 #include <linux/dma-mapping.h> 45 #include <linux/poll.h> 46 #include <linux/mutex.h> 47 #include <linux/kref.h> 48 #include <linux/compat.h> 49 #include <linux/sched.h> 50 #include <linux/semaphore.h> 51 #include <linux/slab.h> 52 53 #include <linux/uaccess.h> 54 55 #include <rdma/ib_mad.h> 56 #include <rdma/ib_user_mad.h> 57 58 MODULE_AUTHOR("Roland Dreier"); 59 MODULE_DESCRIPTION("InfiniBand userspace MAD packet access"); 60 MODULE_LICENSE("Dual BSD/GPL"); 61 62 enum { 63 IB_UMAD_MAX_PORTS = 64, 64 IB_UMAD_MAX_AGENTS = 32, 65 66 IB_UMAD_MAJOR = 231, 67 IB_UMAD_MINOR_BASE = 0 68 }; 69 70 /* 71 * Our lifetime rules for these structs are the following: 72 * device special file is opened, we take a reference on the 73 * ib_umad_port's struct ib_umad_device. We drop these 74 * references in the corresponding close(). 75 * 76 * In addition to references coming from open character devices, there 77 * is one more reference to each ib_umad_device representing the 78 * module's reference taken when allocating the ib_umad_device in 79 * ib_umad_add_one(). 80 * 81 * When destroying an ib_umad_device, we drop the module's reference. 82 */ 83 84 struct ib_umad_port { 85 struct cdev cdev; 86 struct device *dev; 87 88 struct cdev sm_cdev; 89 struct device *sm_dev; 90 struct semaphore sm_sem; 91 92 struct mutex file_mutex; 93 struct list_head file_list; 94 95 struct ib_device *ib_dev; 96 struct ib_umad_device *umad_dev; 97 int dev_num; 98 u8 port_num; 99 }; 100 101 struct ib_umad_device { 102 struct kobject kobj; 103 struct ib_umad_port port[0]; 104 }; 105 106 struct ib_umad_file { 107 struct mutex mutex; 108 struct ib_umad_port *port; 109 struct list_head recv_list; 110 struct list_head send_list; 111 struct list_head port_list; 112 spinlock_t send_lock; 113 wait_queue_head_t recv_wait; 114 struct ib_mad_agent *agent[IB_UMAD_MAX_AGENTS]; 115 int agents_dead; 116 u8 use_pkey_index; 117 u8 already_used; 118 }; 119 120 struct ib_umad_packet { 121 struct ib_mad_send_buf *msg; 122 struct ib_mad_recv_wc *recv_wc; 123 struct list_head list; 124 int length; 125 struct ib_user_mad mad; 126 }; 127 128 static struct class *umad_class; 129 130 static const dev_t base_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE); 131 132 static DEFINE_SPINLOCK(port_lock); 133 static DECLARE_BITMAP(dev_map, IB_UMAD_MAX_PORTS); 134 135 static void ib_umad_add_one(struct ib_device *device); 136 static void ib_umad_remove_one(struct ib_device *device, void *client_data); 137 138 static void ib_umad_release_dev(struct kobject *kobj) 139 { 140 struct ib_umad_device *dev = 141 container_of(kobj, struct ib_umad_device, kobj); 142 143 kfree(dev); 144 } 145 146 static struct kobj_type ib_umad_dev_ktype = { 147 .release = ib_umad_release_dev, 148 }; 149 150 static int hdr_size(struct ib_umad_file *file) 151 { 152 return file->use_pkey_index ? sizeof (struct ib_user_mad_hdr) : 153 sizeof (struct ib_user_mad_hdr_old); 154 } 155 156 /* caller must hold file->mutex */ 157 static struct ib_mad_agent *__get_agent(struct ib_umad_file *file, int id) 158 { 159 return file->agents_dead ? NULL : file->agent[id]; 160 } 161 162 static int queue_packet(struct ib_umad_file *file, 163 struct ib_mad_agent *agent, 164 struct ib_umad_packet *packet) 165 { 166 int ret = 1; 167 168 mutex_lock(&file->mutex); 169 170 for (packet->mad.hdr.id = 0; 171 packet->mad.hdr.id < IB_UMAD_MAX_AGENTS; 172 packet->mad.hdr.id++) 173 if (agent == __get_agent(file, packet->mad.hdr.id)) { 174 list_add_tail(&packet->list, &file->recv_list); 175 wake_up_interruptible(&file->recv_wait); 176 ret = 0; 177 break; 178 } 179 180 mutex_unlock(&file->mutex); 181 182 return ret; 183 } 184 185 static void dequeue_send(struct ib_umad_file *file, 186 struct ib_umad_packet *packet) 187 { 188 spin_lock_irq(&file->send_lock); 189 list_del(&packet->list); 190 spin_unlock_irq(&file->send_lock); 191 } 192 193 static void send_handler(struct ib_mad_agent *agent, 194 struct ib_mad_send_wc *send_wc) 195 { 196 struct ib_umad_file *file = agent->context; 197 struct ib_umad_packet *packet = send_wc->send_buf->context[0]; 198 199 dequeue_send(file, packet); 200 ib_destroy_ah(packet->msg->ah); 201 ib_free_send_mad(packet->msg); 202 203 if (send_wc->status == IB_WC_RESP_TIMEOUT_ERR) { 204 packet->length = IB_MGMT_MAD_HDR; 205 packet->mad.hdr.status = ETIMEDOUT; 206 if (!queue_packet(file, agent, packet)) 207 return; 208 } 209 kfree(packet); 210 } 211 212 static void recv_handler(struct ib_mad_agent *agent, 213 struct ib_mad_send_buf *send_buf, 214 struct ib_mad_recv_wc *mad_recv_wc) 215 { 216 struct ib_umad_file *file = agent->context; 217 struct ib_umad_packet *packet; 218 219 if (mad_recv_wc->wc->status != IB_WC_SUCCESS) 220 goto err1; 221 222 packet = kzalloc(sizeof *packet, GFP_KERNEL); 223 if (!packet) 224 goto err1; 225 226 packet->length = mad_recv_wc->mad_len; 227 packet->recv_wc = mad_recv_wc; 228 229 packet->mad.hdr.status = 0; 230 packet->mad.hdr.length = hdr_size(file) + mad_recv_wc->mad_len; 231 packet->mad.hdr.qpn = cpu_to_be32(mad_recv_wc->wc->src_qp); 232 packet->mad.hdr.lid = cpu_to_be16(mad_recv_wc->wc->slid); 233 packet->mad.hdr.sl = mad_recv_wc->wc->sl; 234 packet->mad.hdr.path_bits = mad_recv_wc->wc->dlid_path_bits; 235 packet->mad.hdr.pkey_index = mad_recv_wc->wc->pkey_index; 236 packet->mad.hdr.grh_present = !!(mad_recv_wc->wc->wc_flags & IB_WC_GRH); 237 if (packet->mad.hdr.grh_present) { 238 struct ib_ah_attr ah_attr; 239 240 ib_init_ah_from_wc(agent->device, agent->port_num, 241 mad_recv_wc->wc, mad_recv_wc->recv_buf.grh, 242 &ah_attr); 243 244 packet->mad.hdr.gid_index = ah_attr.grh.sgid_index; 245 packet->mad.hdr.hop_limit = ah_attr.grh.hop_limit; 246 packet->mad.hdr.traffic_class = ah_attr.grh.traffic_class; 247 memcpy(packet->mad.hdr.gid, &ah_attr.grh.dgid, 16); 248 packet->mad.hdr.flow_label = cpu_to_be32(ah_attr.grh.flow_label); 249 } 250 251 if (queue_packet(file, agent, packet)) 252 goto err2; 253 return; 254 255 err2: 256 kfree(packet); 257 err1: 258 ib_free_recv_mad(mad_recv_wc); 259 } 260 261 static ssize_t copy_recv_mad(struct ib_umad_file *file, char __user *buf, 262 struct ib_umad_packet *packet, size_t count) 263 { 264 struct ib_mad_recv_buf *recv_buf; 265 int left, seg_payload, offset, max_seg_payload; 266 size_t seg_size; 267 268 recv_buf = &packet->recv_wc->recv_buf; 269 seg_size = packet->recv_wc->mad_seg_size; 270 271 /* We need enough room to copy the first (or only) MAD segment. */ 272 if ((packet->length <= seg_size && 273 count < hdr_size(file) + packet->length) || 274 (packet->length > seg_size && 275 count < hdr_size(file) + seg_size)) 276 return -EINVAL; 277 278 if (copy_to_user(buf, &packet->mad, hdr_size(file))) 279 return -EFAULT; 280 281 buf += hdr_size(file); 282 seg_payload = min_t(int, packet->length, seg_size); 283 if (copy_to_user(buf, recv_buf->mad, seg_payload)) 284 return -EFAULT; 285 286 if (seg_payload < packet->length) { 287 /* 288 * Multipacket RMPP MAD message. Copy remainder of message. 289 * Note that last segment may have a shorter payload. 290 */ 291 if (count < hdr_size(file) + packet->length) { 292 /* 293 * The buffer is too small, return the first RMPP segment, 294 * which includes the RMPP message length. 295 */ 296 return -ENOSPC; 297 } 298 offset = ib_get_mad_data_offset(recv_buf->mad->mad_hdr.mgmt_class); 299 max_seg_payload = seg_size - offset; 300 301 for (left = packet->length - seg_payload, buf += seg_payload; 302 left; left -= seg_payload, buf += seg_payload) { 303 recv_buf = container_of(recv_buf->list.next, 304 struct ib_mad_recv_buf, list); 305 seg_payload = min(left, max_seg_payload); 306 if (copy_to_user(buf, ((void *) recv_buf->mad) + offset, 307 seg_payload)) 308 return -EFAULT; 309 } 310 } 311 return hdr_size(file) + packet->length; 312 } 313 314 static ssize_t copy_send_mad(struct ib_umad_file *file, char __user *buf, 315 struct ib_umad_packet *packet, size_t count) 316 { 317 ssize_t size = hdr_size(file) + packet->length; 318 319 if (count < size) 320 return -EINVAL; 321 322 if (copy_to_user(buf, &packet->mad, hdr_size(file))) 323 return -EFAULT; 324 325 buf += hdr_size(file); 326 327 if (copy_to_user(buf, packet->mad.data, packet->length)) 328 return -EFAULT; 329 330 return size; 331 } 332 333 static ssize_t ib_umad_read(struct file *filp, char __user *buf, 334 size_t count, loff_t *pos) 335 { 336 struct ib_umad_file *file = filp->private_data; 337 struct ib_umad_packet *packet; 338 ssize_t ret; 339 340 if (count < hdr_size(file)) 341 return -EINVAL; 342 343 mutex_lock(&file->mutex); 344 345 while (list_empty(&file->recv_list)) { 346 mutex_unlock(&file->mutex); 347 348 if (filp->f_flags & O_NONBLOCK) 349 return -EAGAIN; 350 351 if (wait_event_interruptible(file->recv_wait, 352 !list_empty(&file->recv_list))) 353 return -ERESTARTSYS; 354 355 mutex_lock(&file->mutex); 356 } 357 358 packet = list_entry(file->recv_list.next, struct ib_umad_packet, list); 359 list_del(&packet->list); 360 361 mutex_unlock(&file->mutex); 362 363 if (packet->recv_wc) 364 ret = copy_recv_mad(file, buf, packet, count); 365 else 366 ret = copy_send_mad(file, buf, packet, count); 367 368 if (ret < 0) { 369 /* Requeue packet */ 370 mutex_lock(&file->mutex); 371 list_add(&packet->list, &file->recv_list); 372 mutex_unlock(&file->mutex); 373 } else { 374 if (packet->recv_wc) 375 ib_free_recv_mad(packet->recv_wc); 376 kfree(packet); 377 } 378 return ret; 379 } 380 381 static int copy_rmpp_mad(struct ib_mad_send_buf *msg, const char __user *buf) 382 { 383 int left, seg; 384 385 /* Copy class specific header */ 386 if ((msg->hdr_len > IB_MGMT_RMPP_HDR) && 387 copy_from_user(msg->mad + IB_MGMT_RMPP_HDR, buf + IB_MGMT_RMPP_HDR, 388 msg->hdr_len - IB_MGMT_RMPP_HDR)) 389 return -EFAULT; 390 391 /* All headers are in place. Copy data segments. */ 392 for (seg = 1, left = msg->data_len, buf += msg->hdr_len; left > 0; 393 seg++, left -= msg->seg_size, buf += msg->seg_size) { 394 if (copy_from_user(ib_get_rmpp_segment(msg, seg), buf, 395 min(left, msg->seg_size))) 396 return -EFAULT; 397 } 398 return 0; 399 } 400 401 static int same_destination(struct ib_user_mad_hdr *hdr1, 402 struct ib_user_mad_hdr *hdr2) 403 { 404 if (!hdr1->grh_present && !hdr2->grh_present) 405 return (hdr1->lid == hdr2->lid); 406 407 if (hdr1->grh_present && hdr2->grh_present) 408 return !memcmp(hdr1->gid, hdr2->gid, 16); 409 410 return 0; 411 } 412 413 static int is_duplicate(struct ib_umad_file *file, 414 struct ib_umad_packet *packet) 415 { 416 struct ib_umad_packet *sent_packet; 417 struct ib_mad_hdr *sent_hdr, *hdr; 418 419 hdr = (struct ib_mad_hdr *) packet->mad.data; 420 list_for_each_entry(sent_packet, &file->send_list, list) { 421 sent_hdr = (struct ib_mad_hdr *) sent_packet->mad.data; 422 423 if ((hdr->tid != sent_hdr->tid) || 424 (hdr->mgmt_class != sent_hdr->mgmt_class)) 425 continue; 426 427 /* 428 * No need to be overly clever here. If two new operations have 429 * the same TID, reject the second as a duplicate. This is more 430 * restrictive than required by the spec. 431 */ 432 if (!ib_response_mad(hdr)) { 433 if (!ib_response_mad(sent_hdr)) 434 return 1; 435 continue; 436 } else if (!ib_response_mad(sent_hdr)) 437 continue; 438 439 if (same_destination(&packet->mad.hdr, &sent_packet->mad.hdr)) 440 return 1; 441 } 442 443 return 0; 444 } 445 446 static ssize_t ib_umad_write(struct file *filp, const char __user *buf, 447 size_t count, loff_t *pos) 448 { 449 struct ib_umad_file *file = filp->private_data; 450 struct ib_umad_packet *packet; 451 struct ib_mad_agent *agent; 452 struct ib_ah_attr ah_attr; 453 struct ib_ah *ah; 454 struct ib_rmpp_mad *rmpp_mad; 455 __be64 *tid; 456 int ret, data_len, hdr_len, copy_offset, rmpp_active; 457 u8 base_version; 458 459 if (count < hdr_size(file) + IB_MGMT_RMPP_HDR) 460 return -EINVAL; 461 462 packet = kzalloc(sizeof *packet + IB_MGMT_RMPP_HDR, GFP_KERNEL); 463 if (!packet) 464 return -ENOMEM; 465 466 if (copy_from_user(&packet->mad, buf, hdr_size(file))) { 467 ret = -EFAULT; 468 goto err; 469 } 470 471 if (packet->mad.hdr.id >= IB_UMAD_MAX_AGENTS) { 472 ret = -EINVAL; 473 goto err; 474 } 475 476 buf += hdr_size(file); 477 478 if (copy_from_user(packet->mad.data, buf, IB_MGMT_RMPP_HDR)) { 479 ret = -EFAULT; 480 goto err; 481 } 482 483 mutex_lock(&file->mutex); 484 485 agent = __get_agent(file, packet->mad.hdr.id); 486 if (!agent) { 487 ret = -EINVAL; 488 goto err_up; 489 } 490 491 memset(&ah_attr, 0, sizeof ah_attr); 492 ah_attr.dlid = be16_to_cpu(packet->mad.hdr.lid); 493 ah_attr.sl = packet->mad.hdr.sl; 494 ah_attr.src_path_bits = packet->mad.hdr.path_bits; 495 ah_attr.port_num = file->port->port_num; 496 if (packet->mad.hdr.grh_present) { 497 ah_attr.ah_flags = IB_AH_GRH; 498 memcpy(ah_attr.grh.dgid.raw, packet->mad.hdr.gid, 16); 499 ah_attr.grh.sgid_index = packet->mad.hdr.gid_index; 500 ah_attr.grh.flow_label = be32_to_cpu(packet->mad.hdr.flow_label); 501 ah_attr.grh.hop_limit = packet->mad.hdr.hop_limit; 502 ah_attr.grh.traffic_class = packet->mad.hdr.traffic_class; 503 } 504 505 ah = ib_create_ah(agent->qp->pd, &ah_attr); 506 if (IS_ERR(ah)) { 507 ret = PTR_ERR(ah); 508 goto err_up; 509 } 510 511 rmpp_mad = (struct ib_rmpp_mad *) packet->mad.data; 512 hdr_len = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class); 513 514 if (ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class) 515 && ib_mad_kernel_rmpp_agent(agent)) { 516 copy_offset = IB_MGMT_RMPP_HDR; 517 rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & 518 IB_MGMT_RMPP_FLAG_ACTIVE; 519 } else { 520 copy_offset = IB_MGMT_MAD_HDR; 521 rmpp_active = 0; 522 } 523 524 base_version = ((struct ib_mad_hdr *)&packet->mad.data)->base_version; 525 data_len = count - hdr_size(file) - hdr_len; 526 packet->msg = ib_create_send_mad(agent, 527 be32_to_cpu(packet->mad.hdr.qpn), 528 packet->mad.hdr.pkey_index, rmpp_active, 529 hdr_len, data_len, GFP_KERNEL, 530 base_version); 531 if (IS_ERR(packet->msg)) { 532 ret = PTR_ERR(packet->msg); 533 goto err_ah; 534 } 535 536 packet->msg->ah = ah; 537 packet->msg->timeout_ms = packet->mad.hdr.timeout_ms; 538 packet->msg->retries = packet->mad.hdr.retries; 539 packet->msg->context[0] = packet; 540 541 /* Copy MAD header. Any RMPP header is already in place. */ 542 memcpy(packet->msg->mad, packet->mad.data, IB_MGMT_MAD_HDR); 543 544 if (!rmpp_active) { 545 if (copy_from_user(packet->msg->mad + copy_offset, 546 buf + copy_offset, 547 hdr_len + data_len - copy_offset)) { 548 ret = -EFAULT; 549 goto err_msg; 550 } 551 } else { 552 ret = copy_rmpp_mad(packet->msg, buf); 553 if (ret) 554 goto err_msg; 555 } 556 557 /* 558 * Set the high-order part of the transaction ID to make MADs from 559 * different agents unique, and allow routing responses back to the 560 * original requestor. 561 */ 562 if (!ib_response_mad(packet->msg->mad)) { 563 tid = &((struct ib_mad_hdr *) packet->msg->mad)->tid; 564 *tid = cpu_to_be64(((u64) agent->hi_tid) << 32 | 565 (be64_to_cpup(tid) & 0xffffffff)); 566 rmpp_mad->mad_hdr.tid = *tid; 567 } 568 569 if (!ib_mad_kernel_rmpp_agent(agent) 570 && ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class) 571 && (ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE)) { 572 spin_lock_irq(&file->send_lock); 573 list_add_tail(&packet->list, &file->send_list); 574 spin_unlock_irq(&file->send_lock); 575 } else { 576 spin_lock_irq(&file->send_lock); 577 ret = is_duplicate(file, packet); 578 if (!ret) 579 list_add_tail(&packet->list, &file->send_list); 580 spin_unlock_irq(&file->send_lock); 581 if (ret) { 582 ret = -EINVAL; 583 goto err_msg; 584 } 585 } 586 587 ret = ib_post_send_mad(packet->msg, NULL); 588 if (ret) 589 goto err_send; 590 591 mutex_unlock(&file->mutex); 592 return count; 593 594 err_send: 595 dequeue_send(file, packet); 596 err_msg: 597 ib_free_send_mad(packet->msg); 598 err_ah: 599 ib_destroy_ah(ah); 600 err_up: 601 mutex_unlock(&file->mutex); 602 err: 603 kfree(packet); 604 return ret; 605 } 606 607 static unsigned int ib_umad_poll(struct file *filp, struct poll_table_struct *wait) 608 { 609 struct ib_umad_file *file = filp->private_data; 610 611 /* we will always be able to post a MAD send */ 612 unsigned int mask = POLLOUT | POLLWRNORM; 613 614 poll_wait(filp, &file->recv_wait, wait); 615 616 if (!list_empty(&file->recv_list)) 617 mask |= POLLIN | POLLRDNORM; 618 619 return mask; 620 } 621 622 static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg, 623 int compat_method_mask) 624 { 625 struct ib_user_mad_reg_req ureq; 626 struct ib_mad_reg_req req; 627 struct ib_mad_agent *agent = NULL; 628 int agent_id; 629 int ret; 630 631 mutex_lock(&file->port->file_mutex); 632 mutex_lock(&file->mutex); 633 634 if (!file->port->ib_dev) { 635 dev_notice(file->port->dev, 636 "ib_umad_reg_agent: invalid device\n"); 637 ret = -EPIPE; 638 goto out; 639 } 640 641 if (copy_from_user(&ureq, arg, sizeof ureq)) { 642 ret = -EFAULT; 643 goto out; 644 } 645 646 if (ureq.qpn != 0 && ureq.qpn != 1) { 647 dev_notice(file->port->dev, 648 "ib_umad_reg_agent: invalid QPN %d specified\n", 649 ureq.qpn); 650 ret = -EINVAL; 651 goto out; 652 } 653 654 for (agent_id = 0; agent_id < IB_UMAD_MAX_AGENTS; ++agent_id) 655 if (!__get_agent(file, agent_id)) 656 goto found; 657 658 dev_notice(file->port->dev, 659 "ib_umad_reg_agent: Max Agents (%u) reached\n", 660 IB_UMAD_MAX_AGENTS); 661 ret = -ENOMEM; 662 goto out; 663 664 found: 665 if (ureq.mgmt_class) { 666 memset(&req, 0, sizeof(req)); 667 req.mgmt_class = ureq.mgmt_class; 668 req.mgmt_class_version = ureq.mgmt_class_version; 669 memcpy(req.oui, ureq.oui, sizeof req.oui); 670 671 if (compat_method_mask) { 672 u32 *umm = (u32 *) ureq.method_mask; 673 int i; 674 675 for (i = 0; i < BITS_TO_LONGS(IB_MGMT_MAX_METHODS); ++i) 676 req.method_mask[i] = 677 umm[i * 2] | ((u64) umm[i * 2 + 1] << 32); 678 } else 679 memcpy(req.method_mask, ureq.method_mask, 680 sizeof req.method_mask); 681 } 682 683 agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num, 684 ureq.qpn ? IB_QPT_GSI : IB_QPT_SMI, 685 ureq.mgmt_class ? &req : NULL, 686 ureq.rmpp_version, 687 send_handler, recv_handler, file, 0); 688 if (IS_ERR(agent)) { 689 ret = PTR_ERR(agent); 690 agent = NULL; 691 goto out; 692 } 693 694 if (put_user(agent_id, 695 (u32 __user *) (arg + offsetof(struct ib_user_mad_reg_req, id)))) { 696 ret = -EFAULT; 697 goto out; 698 } 699 700 if (!file->already_used) { 701 file->already_used = 1; 702 if (!file->use_pkey_index) { 703 dev_warn(file->port->dev, 704 "process %s did not enable P_Key index support.\n", 705 current->comm); 706 dev_warn(file->port->dev, 707 " Documentation/infiniband/user_mad.txt has info on the new ABI.\n"); 708 } 709 } 710 711 file->agent[agent_id] = agent; 712 ret = 0; 713 714 out: 715 mutex_unlock(&file->mutex); 716 717 if (ret && agent) 718 ib_unregister_mad_agent(agent); 719 720 mutex_unlock(&file->port->file_mutex); 721 722 return ret; 723 } 724 725 static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg) 726 { 727 struct ib_user_mad_reg_req2 ureq; 728 struct ib_mad_reg_req req; 729 struct ib_mad_agent *agent = NULL; 730 int agent_id; 731 int ret; 732 733 mutex_lock(&file->port->file_mutex); 734 mutex_lock(&file->mutex); 735 736 if (!file->port->ib_dev) { 737 dev_notice(file->port->dev, 738 "ib_umad_reg_agent2: invalid device\n"); 739 ret = -EPIPE; 740 goto out; 741 } 742 743 if (copy_from_user(&ureq, arg, sizeof(ureq))) { 744 ret = -EFAULT; 745 goto out; 746 } 747 748 if (ureq.qpn != 0 && ureq.qpn != 1) { 749 dev_notice(file->port->dev, 750 "ib_umad_reg_agent2: invalid QPN %d specified\n", 751 ureq.qpn); 752 ret = -EINVAL; 753 goto out; 754 } 755 756 if (ureq.flags & ~IB_USER_MAD_REG_FLAGS_CAP) { 757 dev_notice(file->port->dev, 758 "ib_umad_reg_agent2 failed: invalid registration flags specified 0x%x; supported 0x%x\n", 759 ureq.flags, IB_USER_MAD_REG_FLAGS_CAP); 760 ret = -EINVAL; 761 762 if (put_user((u32)IB_USER_MAD_REG_FLAGS_CAP, 763 (u32 __user *) (arg + offsetof(struct 764 ib_user_mad_reg_req2, flags)))) 765 ret = -EFAULT; 766 767 goto out; 768 } 769 770 for (agent_id = 0; agent_id < IB_UMAD_MAX_AGENTS; ++agent_id) 771 if (!__get_agent(file, agent_id)) 772 goto found; 773 774 dev_notice(file->port->dev, 775 "ib_umad_reg_agent2: Max Agents (%u) reached\n", 776 IB_UMAD_MAX_AGENTS); 777 ret = -ENOMEM; 778 goto out; 779 780 found: 781 if (ureq.mgmt_class) { 782 memset(&req, 0, sizeof(req)); 783 req.mgmt_class = ureq.mgmt_class; 784 req.mgmt_class_version = ureq.mgmt_class_version; 785 if (ureq.oui & 0xff000000) { 786 dev_notice(file->port->dev, 787 "ib_umad_reg_agent2 failed: oui invalid 0x%08x\n", 788 ureq.oui); 789 ret = -EINVAL; 790 goto out; 791 } 792 req.oui[2] = ureq.oui & 0x0000ff; 793 req.oui[1] = (ureq.oui & 0x00ff00) >> 8; 794 req.oui[0] = (ureq.oui & 0xff0000) >> 16; 795 memcpy(req.method_mask, ureq.method_mask, 796 sizeof(req.method_mask)); 797 } 798 799 agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num, 800 ureq.qpn ? IB_QPT_GSI : IB_QPT_SMI, 801 ureq.mgmt_class ? &req : NULL, 802 ureq.rmpp_version, 803 send_handler, recv_handler, file, 804 ureq.flags); 805 if (IS_ERR(agent)) { 806 ret = PTR_ERR(agent); 807 agent = NULL; 808 goto out; 809 } 810 811 if (put_user(agent_id, 812 (u32 __user *)(arg + 813 offsetof(struct ib_user_mad_reg_req2, id)))) { 814 ret = -EFAULT; 815 goto out; 816 } 817 818 if (!file->already_used) { 819 file->already_used = 1; 820 file->use_pkey_index = 1; 821 } 822 823 file->agent[agent_id] = agent; 824 ret = 0; 825 826 out: 827 mutex_unlock(&file->mutex); 828 829 if (ret && agent) 830 ib_unregister_mad_agent(agent); 831 832 mutex_unlock(&file->port->file_mutex); 833 834 return ret; 835 } 836 837 838 static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg) 839 { 840 struct ib_mad_agent *agent = NULL; 841 u32 id; 842 int ret = 0; 843 844 if (get_user(id, arg)) 845 return -EFAULT; 846 847 mutex_lock(&file->port->file_mutex); 848 mutex_lock(&file->mutex); 849 850 if (id >= IB_UMAD_MAX_AGENTS || !__get_agent(file, id)) { 851 ret = -EINVAL; 852 goto out; 853 } 854 855 agent = file->agent[id]; 856 file->agent[id] = NULL; 857 858 out: 859 mutex_unlock(&file->mutex); 860 861 if (agent) 862 ib_unregister_mad_agent(agent); 863 864 mutex_unlock(&file->port->file_mutex); 865 866 return ret; 867 } 868 869 static long ib_umad_enable_pkey(struct ib_umad_file *file) 870 { 871 int ret = 0; 872 873 mutex_lock(&file->mutex); 874 if (file->already_used) 875 ret = -EINVAL; 876 else 877 file->use_pkey_index = 1; 878 mutex_unlock(&file->mutex); 879 880 return ret; 881 } 882 883 static long ib_umad_ioctl(struct file *filp, unsigned int cmd, 884 unsigned long arg) 885 { 886 switch (cmd) { 887 case IB_USER_MAD_REGISTER_AGENT: 888 return ib_umad_reg_agent(filp->private_data, (void __user *) arg, 0); 889 case IB_USER_MAD_UNREGISTER_AGENT: 890 return ib_umad_unreg_agent(filp->private_data, (__u32 __user *) arg); 891 case IB_USER_MAD_ENABLE_PKEY: 892 return ib_umad_enable_pkey(filp->private_data); 893 case IB_USER_MAD_REGISTER_AGENT2: 894 return ib_umad_reg_agent2(filp->private_data, (void __user *) arg); 895 default: 896 return -ENOIOCTLCMD; 897 } 898 } 899 900 #ifdef CONFIG_COMPAT 901 static long ib_umad_compat_ioctl(struct file *filp, unsigned int cmd, 902 unsigned long arg) 903 { 904 switch (cmd) { 905 case IB_USER_MAD_REGISTER_AGENT: 906 return ib_umad_reg_agent(filp->private_data, compat_ptr(arg), 1); 907 case IB_USER_MAD_UNREGISTER_AGENT: 908 return ib_umad_unreg_agent(filp->private_data, compat_ptr(arg)); 909 case IB_USER_MAD_ENABLE_PKEY: 910 return ib_umad_enable_pkey(filp->private_data); 911 case IB_USER_MAD_REGISTER_AGENT2: 912 return ib_umad_reg_agent2(filp->private_data, compat_ptr(arg)); 913 default: 914 return -ENOIOCTLCMD; 915 } 916 } 917 #endif 918 919 /* 920 * ib_umad_open() does not need the BKL: 921 * 922 * - the ib_umad_port structures are properly reference counted, and 923 * everything else is purely local to the file being created, so 924 * races against other open calls are not a problem; 925 * - the ioctl method does not affect any global state outside of the 926 * file structure being operated on; 927 */ 928 static int ib_umad_open(struct inode *inode, struct file *filp) 929 { 930 struct ib_umad_port *port; 931 struct ib_umad_file *file; 932 int ret = -ENXIO; 933 934 port = container_of(inode->i_cdev, struct ib_umad_port, cdev); 935 936 mutex_lock(&port->file_mutex); 937 938 if (!port->ib_dev) 939 goto out; 940 941 ret = -ENOMEM; 942 file = kzalloc(sizeof *file, GFP_KERNEL); 943 if (!file) 944 goto out; 945 946 mutex_init(&file->mutex); 947 spin_lock_init(&file->send_lock); 948 INIT_LIST_HEAD(&file->recv_list); 949 INIT_LIST_HEAD(&file->send_list); 950 init_waitqueue_head(&file->recv_wait); 951 952 file->port = port; 953 filp->private_data = file; 954 955 list_add_tail(&file->port_list, &port->file_list); 956 957 ret = nonseekable_open(inode, filp); 958 if (ret) { 959 list_del(&file->port_list); 960 kfree(file); 961 goto out; 962 } 963 964 kobject_get(&port->umad_dev->kobj); 965 966 out: 967 mutex_unlock(&port->file_mutex); 968 return ret; 969 } 970 971 static int ib_umad_close(struct inode *inode, struct file *filp) 972 { 973 struct ib_umad_file *file = filp->private_data; 974 struct ib_umad_device *dev = file->port->umad_dev; 975 struct ib_umad_packet *packet, *tmp; 976 int already_dead; 977 int i; 978 979 mutex_lock(&file->port->file_mutex); 980 mutex_lock(&file->mutex); 981 982 already_dead = file->agents_dead; 983 file->agents_dead = 1; 984 985 list_for_each_entry_safe(packet, tmp, &file->recv_list, list) { 986 if (packet->recv_wc) 987 ib_free_recv_mad(packet->recv_wc); 988 kfree(packet); 989 } 990 991 list_del(&file->port_list); 992 993 mutex_unlock(&file->mutex); 994 995 if (!already_dead) 996 for (i = 0; i < IB_UMAD_MAX_AGENTS; ++i) 997 if (file->agent[i]) 998 ib_unregister_mad_agent(file->agent[i]); 999 1000 mutex_unlock(&file->port->file_mutex); 1001 1002 kfree(file); 1003 kobject_put(&dev->kobj); 1004 1005 return 0; 1006 } 1007 1008 static const struct file_operations umad_fops = { 1009 .owner = THIS_MODULE, 1010 .read = ib_umad_read, 1011 .write = ib_umad_write, 1012 .poll = ib_umad_poll, 1013 .unlocked_ioctl = ib_umad_ioctl, 1014 #ifdef CONFIG_COMPAT 1015 .compat_ioctl = ib_umad_compat_ioctl, 1016 #endif 1017 .open = ib_umad_open, 1018 .release = ib_umad_close, 1019 .llseek = no_llseek, 1020 }; 1021 1022 static int ib_umad_sm_open(struct inode *inode, struct file *filp) 1023 { 1024 struct ib_umad_port *port; 1025 struct ib_port_modify props = { 1026 .set_port_cap_mask = IB_PORT_SM 1027 }; 1028 int ret; 1029 1030 port = container_of(inode->i_cdev, struct ib_umad_port, sm_cdev); 1031 1032 if (filp->f_flags & O_NONBLOCK) { 1033 if (down_trylock(&port->sm_sem)) { 1034 ret = -EAGAIN; 1035 goto fail; 1036 } 1037 } else { 1038 if (down_interruptible(&port->sm_sem)) { 1039 ret = -ERESTARTSYS; 1040 goto fail; 1041 } 1042 } 1043 1044 ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props); 1045 if (ret) 1046 goto err_up_sem; 1047 1048 filp->private_data = port; 1049 1050 ret = nonseekable_open(inode, filp); 1051 if (ret) 1052 goto err_clr_sm_cap; 1053 1054 kobject_get(&port->umad_dev->kobj); 1055 1056 return 0; 1057 1058 err_clr_sm_cap: 1059 swap(props.set_port_cap_mask, props.clr_port_cap_mask); 1060 ib_modify_port(port->ib_dev, port->port_num, 0, &props); 1061 1062 err_up_sem: 1063 up(&port->sm_sem); 1064 1065 fail: 1066 return ret; 1067 } 1068 1069 static int ib_umad_sm_close(struct inode *inode, struct file *filp) 1070 { 1071 struct ib_umad_port *port = filp->private_data; 1072 struct ib_port_modify props = { 1073 .clr_port_cap_mask = IB_PORT_SM 1074 }; 1075 int ret = 0; 1076 1077 mutex_lock(&port->file_mutex); 1078 if (port->ib_dev) 1079 ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props); 1080 mutex_unlock(&port->file_mutex); 1081 1082 up(&port->sm_sem); 1083 1084 kobject_put(&port->umad_dev->kobj); 1085 1086 return ret; 1087 } 1088 1089 static const struct file_operations umad_sm_fops = { 1090 .owner = THIS_MODULE, 1091 .open = ib_umad_sm_open, 1092 .release = ib_umad_sm_close, 1093 .llseek = no_llseek, 1094 }; 1095 1096 static struct ib_client umad_client = { 1097 .name = "umad", 1098 .add = ib_umad_add_one, 1099 .remove = ib_umad_remove_one 1100 }; 1101 1102 static ssize_t show_ibdev(struct device *dev, struct device_attribute *attr, 1103 char *buf) 1104 { 1105 struct ib_umad_port *port = dev_get_drvdata(dev); 1106 1107 if (!port) 1108 return -ENODEV; 1109 1110 return sprintf(buf, "%s\n", port->ib_dev->name); 1111 } 1112 static DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL); 1113 1114 static ssize_t show_port(struct device *dev, struct device_attribute *attr, 1115 char *buf) 1116 { 1117 struct ib_umad_port *port = dev_get_drvdata(dev); 1118 1119 if (!port) 1120 return -ENODEV; 1121 1122 return sprintf(buf, "%d\n", port->port_num); 1123 } 1124 static DEVICE_ATTR(port, S_IRUGO, show_port, NULL); 1125 1126 static CLASS_ATTR_STRING(abi_version, S_IRUGO, 1127 __stringify(IB_USER_MAD_ABI_VERSION)); 1128 1129 static dev_t overflow_maj; 1130 static DECLARE_BITMAP(overflow_map, IB_UMAD_MAX_PORTS); 1131 static int find_overflow_devnum(struct ib_device *device) 1132 { 1133 int ret; 1134 1135 if (!overflow_maj) { 1136 ret = alloc_chrdev_region(&overflow_maj, 0, IB_UMAD_MAX_PORTS * 2, 1137 "infiniband_mad"); 1138 if (ret) { 1139 dev_err(&device->dev, 1140 "couldn't register dynamic device number\n"); 1141 return ret; 1142 } 1143 } 1144 1145 ret = find_first_zero_bit(overflow_map, IB_UMAD_MAX_PORTS); 1146 if (ret >= IB_UMAD_MAX_PORTS) 1147 return -1; 1148 1149 return ret; 1150 } 1151 1152 static int ib_umad_init_port(struct ib_device *device, int port_num, 1153 struct ib_umad_device *umad_dev, 1154 struct ib_umad_port *port) 1155 { 1156 int devnum; 1157 dev_t base; 1158 1159 spin_lock(&port_lock); 1160 devnum = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS); 1161 if (devnum >= IB_UMAD_MAX_PORTS) { 1162 spin_unlock(&port_lock); 1163 devnum = find_overflow_devnum(device); 1164 if (devnum < 0) 1165 return -1; 1166 1167 spin_lock(&port_lock); 1168 port->dev_num = devnum + IB_UMAD_MAX_PORTS; 1169 base = devnum + overflow_maj; 1170 set_bit(devnum, overflow_map); 1171 } else { 1172 port->dev_num = devnum; 1173 base = devnum + base_dev; 1174 set_bit(devnum, dev_map); 1175 } 1176 spin_unlock(&port_lock); 1177 1178 port->ib_dev = device; 1179 port->port_num = port_num; 1180 sema_init(&port->sm_sem, 1); 1181 mutex_init(&port->file_mutex); 1182 INIT_LIST_HEAD(&port->file_list); 1183 1184 cdev_init(&port->cdev, &umad_fops); 1185 port->cdev.owner = THIS_MODULE; 1186 port->cdev.kobj.parent = &umad_dev->kobj; 1187 kobject_set_name(&port->cdev.kobj, "umad%d", port->dev_num); 1188 if (cdev_add(&port->cdev, base, 1)) 1189 goto err_cdev; 1190 1191 port->dev = device_create(umad_class, device->dma_device, 1192 port->cdev.dev, port, 1193 "umad%d", port->dev_num); 1194 if (IS_ERR(port->dev)) 1195 goto err_cdev; 1196 1197 if (device_create_file(port->dev, &dev_attr_ibdev)) 1198 goto err_dev; 1199 if (device_create_file(port->dev, &dev_attr_port)) 1200 goto err_dev; 1201 1202 base += IB_UMAD_MAX_PORTS; 1203 cdev_init(&port->sm_cdev, &umad_sm_fops); 1204 port->sm_cdev.owner = THIS_MODULE; 1205 port->sm_cdev.kobj.parent = &umad_dev->kobj; 1206 kobject_set_name(&port->sm_cdev.kobj, "issm%d", port->dev_num); 1207 if (cdev_add(&port->sm_cdev, base, 1)) 1208 goto err_sm_cdev; 1209 1210 port->sm_dev = device_create(umad_class, device->dma_device, 1211 port->sm_cdev.dev, port, 1212 "issm%d", port->dev_num); 1213 if (IS_ERR(port->sm_dev)) 1214 goto err_sm_cdev; 1215 1216 if (device_create_file(port->sm_dev, &dev_attr_ibdev)) 1217 goto err_sm_dev; 1218 if (device_create_file(port->sm_dev, &dev_attr_port)) 1219 goto err_sm_dev; 1220 1221 return 0; 1222 1223 err_sm_dev: 1224 device_destroy(umad_class, port->sm_cdev.dev); 1225 1226 err_sm_cdev: 1227 cdev_del(&port->sm_cdev); 1228 1229 err_dev: 1230 device_destroy(umad_class, port->cdev.dev); 1231 1232 err_cdev: 1233 cdev_del(&port->cdev); 1234 if (port->dev_num < IB_UMAD_MAX_PORTS) 1235 clear_bit(devnum, dev_map); 1236 else 1237 clear_bit(devnum, overflow_map); 1238 1239 return -1; 1240 } 1241 1242 static void ib_umad_kill_port(struct ib_umad_port *port) 1243 { 1244 struct ib_umad_file *file; 1245 int id; 1246 1247 dev_set_drvdata(port->dev, NULL); 1248 dev_set_drvdata(port->sm_dev, NULL); 1249 1250 device_destroy(umad_class, port->cdev.dev); 1251 device_destroy(umad_class, port->sm_cdev.dev); 1252 1253 cdev_del(&port->cdev); 1254 cdev_del(&port->sm_cdev); 1255 1256 mutex_lock(&port->file_mutex); 1257 1258 port->ib_dev = NULL; 1259 1260 list_for_each_entry(file, &port->file_list, port_list) { 1261 mutex_lock(&file->mutex); 1262 file->agents_dead = 1; 1263 mutex_unlock(&file->mutex); 1264 1265 for (id = 0; id < IB_UMAD_MAX_AGENTS; ++id) 1266 if (file->agent[id]) 1267 ib_unregister_mad_agent(file->agent[id]); 1268 } 1269 1270 mutex_unlock(&port->file_mutex); 1271 1272 if (port->dev_num < IB_UMAD_MAX_PORTS) 1273 clear_bit(port->dev_num, dev_map); 1274 else 1275 clear_bit(port->dev_num - IB_UMAD_MAX_PORTS, overflow_map); 1276 } 1277 1278 static void ib_umad_add_one(struct ib_device *device) 1279 { 1280 struct ib_umad_device *umad_dev; 1281 int s, e, i; 1282 int count = 0; 1283 1284 s = rdma_start_port(device); 1285 e = rdma_end_port(device); 1286 1287 umad_dev = kzalloc(sizeof *umad_dev + 1288 (e - s + 1) * sizeof (struct ib_umad_port), 1289 GFP_KERNEL); 1290 if (!umad_dev) 1291 return; 1292 1293 kobject_init(&umad_dev->kobj, &ib_umad_dev_ktype); 1294 1295 for (i = s; i <= e; ++i) { 1296 if (!rdma_cap_ib_mad(device, i)) 1297 continue; 1298 1299 umad_dev->port[i - s].umad_dev = umad_dev; 1300 1301 if (ib_umad_init_port(device, i, umad_dev, 1302 &umad_dev->port[i - s])) 1303 goto err; 1304 1305 count++; 1306 } 1307 1308 if (!count) 1309 goto free; 1310 1311 ib_set_client_data(device, &umad_client, umad_dev); 1312 1313 return; 1314 1315 err: 1316 while (--i >= s) { 1317 if (!rdma_cap_ib_mad(device, i)) 1318 continue; 1319 1320 ib_umad_kill_port(&umad_dev->port[i - s]); 1321 } 1322 free: 1323 kobject_put(&umad_dev->kobj); 1324 } 1325 1326 static void ib_umad_remove_one(struct ib_device *device, void *client_data) 1327 { 1328 struct ib_umad_device *umad_dev = client_data; 1329 int i; 1330 1331 if (!umad_dev) 1332 return; 1333 1334 for (i = 0; i <= rdma_end_port(device) - rdma_start_port(device); ++i) { 1335 if (rdma_cap_ib_mad(device, i + rdma_start_port(device))) 1336 ib_umad_kill_port(&umad_dev->port[i]); 1337 } 1338 1339 kobject_put(&umad_dev->kobj); 1340 } 1341 1342 static char *umad_devnode(struct device *dev, umode_t *mode) 1343 { 1344 return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev)); 1345 } 1346 1347 static int __init ib_umad_init(void) 1348 { 1349 int ret; 1350 1351 ret = register_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2, 1352 "infiniband_mad"); 1353 if (ret) { 1354 pr_err("couldn't register device number\n"); 1355 goto out; 1356 } 1357 1358 umad_class = class_create(THIS_MODULE, "infiniband_mad"); 1359 if (IS_ERR(umad_class)) { 1360 ret = PTR_ERR(umad_class); 1361 pr_err("couldn't create class infiniband_mad\n"); 1362 goto out_chrdev; 1363 } 1364 1365 umad_class->devnode = umad_devnode; 1366 1367 ret = class_create_file(umad_class, &class_attr_abi_version.attr); 1368 if (ret) { 1369 pr_err("couldn't create abi_version attribute\n"); 1370 goto out_class; 1371 } 1372 1373 ret = ib_register_client(&umad_client); 1374 if (ret) { 1375 pr_err("couldn't register ib_umad client\n"); 1376 goto out_class; 1377 } 1378 1379 return 0; 1380 1381 out_class: 1382 class_destroy(umad_class); 1383 1384 out_chrdev: 1385 unregister_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2); 1386 1387 out: 1388 return ret; 1389 } 1390 1391 static void __exit ib_umad_cleanup(void) 1392 { 1393 ib_unregister_client(&umad_client); 1394 class_destroy(umad_class); 1395 unregister_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2); 1396 if (overflow_maj) 1397 unregister_chrdev_region(overflow_maj, IB_UMAD_MAX_PORTS * 2); 1398 } 1399 1400 module_init(ib_umad_init); 1401 module_exit(ib_umad_cleanup); 1402