1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* 3 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 4 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 5 */ 6 7 #include <linux/dma-mapping.h> 8 #include <net/addrconf.h> 9 #include <rdma/uverbs_ioctl.h> 10 11 #include "rxe.h" 12 #include "rxe_queue.h" 13 #include "rxe_hw_counters.h" 14 15 static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr); 16 17 /* dev */ 18 static int rxe_query_device(struct ib_device *ibdev, 19 struct ib_device_attr *attr, 20 struct ib_udata *udata) 21 { 22 struct rxe_dev *rxe = to_rdev(ibdev); 23 int err; 24 25 if (udata->inlen || udata->outlen) { 26 rxe_dbg_dev(rxe, "malformed udata\n"); 27 err = -EINVAL; 28 goto err_out; 29 } 30 31 memcpy(attr, &rxe->attr, sizeof(*attr)); 32 33 return 0; 34 35 err_out: 36 rxe_err_dev(rxe, "returned err = %d\n", err); 37 return err; 38 } 39 40 static int rxe_query_port(struct ib_device *ibdev, 41 u32 port_num, struct ib_port_attr *attr) 42 { 43 struct rxe_dev *rxe = to_rdev(ibdev); 44 struct net_device *ndev; 45 int err, ret; 46 47 if (port_num != 1) { 48 err = -EINVAL; 49 rxe_dbg_dev(rxe, "bad port_num = %d\n", port_num); 50 goto err_out; 51 } 52 53 ndev = rxe_ib_device_get_netdev(ibdev); 54 if (!ndev) { 55 err = -ENODEV; 56 goto err_out; 57 } 58 59 memcpy(attr, &rxe->port.attr, sizeof(*attr)); 60 61 mutex_lock(&rxe->usdev_lock); 62 ret = ib_get_eth_speed(ibdev, port_num, &attr->active_speed, 63 &attr->active_width); 64 65 attr->state = ib_get_curr_port_state(ndev); 66 if (attr->state == IB_PORT_ACTIVE) 67 attr->phys_state = IB_PORT_PHYS_STATE_LINK_UP; 68 else if (dev_get_flags(ndev) & IFF_UP) 69 attr->phys_state = IB_PORT_PHYS_STATE_POLLING; 70 else 71 attr->phys_state = IB_PORT_PHYS_STATE_DISABLED; 72 73 mutex_unlock(&rxe->usdev_lock); 74 75 dev_put(ndev); 76 return ret; 77 78 err_out: 79 rxe_err_dev(rxe, "returned err = %d\n", err); 80 return err; 81 } 82 83 static int rxe_query_pkey(struct ib_device *ibdev, 84 u32 port_num, u16 index, u16 *pkey) 85 { 86 struct rxe_dev *rxe = to_rdev(ibdev); 87 int err; 88 89 if (index != 0) { 90 err = -EINVAL; 91 rxe_dbg_dev(rxe, "bad pkey index = %d\n", index); 92 goto err_out; 93 } 94 95 *pkey = IB_DEFAULT_PKEY_FULL; 96 return 0; 97 98 err_out: 99 rxe_err_dev(rxe, "returned err = %d\n", err); 100 return err; 101 } 102 103 static int rxe_modify_device(struct ib_device *ibdev, 104 int mask, struct ib_device_modify *attr) 105 { 106 struct rxe_dev *rxe = to_rdev(ibdev); 107 int err; 108 109 if (mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID | 110 IB_DEVICE_MODIFY_NODE_DESC)) { 111 err = -EOPNOTSUPP; 112 rxe_dbg_dev(rxe, "unsupported mask = 0x%x\n", mask); 113 goto err_out; 114 } 115 116 if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) 117 rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid); 118 119 if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 120 memcpy(rxe->ib_dev.node_desc, 121 attr->node_desc, sizeof(rxe->ib_dev.node_desc)); 122 } 123 124 return 0; 125 126 err_out: 127 rxe_err_dev(rxe, "returned err = %d\n", err); 128 return err; 129 } 130 131 static int rxe_modify_port(struct ib_device *ibdev, u32 port_num, 132 int mask, struct ib_port_modify *attr) 133 { 134 struct rxe_dev *rxe = to_rdev(ibdev); 135 struct rxe_port *port; 136 int err; 137 138 if (port_num != 1) { 139 err = -EINVAL; 140 rxe_dbg_dev(rxe, "bad port_num = %d\n", port_num); 141 goto err_out; 142 } 143 144 //TODO is shutdown useful 145 if (mask & ~(IB_PORT_RESET_QKEY_CNTR)) { 146 err = -EOPNOTSUPP; 147 rxe_dbg_dev(rxe, "unsupported mask = 0x%x\n", mask); 148 goto err_out; 149 } 150 151 port = &rxe->port; 152 port->attr.port_cap_flags |= attr->set_port_cap_mask; 153 port->attr.port_cap_flags &= ~attr->clr_port_cap_mask; 154 155 if (mask & IB_PORT_RESET_QKEY_CNTR) 156 port->attr.qkey_viol_cntr = 0; 157 158 return 0; 159 160 err_out: 161 rxe_err_dev(rxe, "returned err = %d\n", err); 162 return err; 163 } 164 165 static enum rdma_link_layer rxe_get_link_layer(struct ib_device *ibdev, 166 u32 port_num) 167 { 168 struct rxe_dev *rxe = to_rdev(ibdev); 169 int err; 170 171 if (port_num != 1) { 172 err = -EINVAL; 173 rxe_dbg_dev(rxe, "bad port_num = %d\n", port_num); 174 goto err_out; 175 } 176 177 return IB_LINK_LAYER_ETHERNET; 178 179 err_out: 180 rxe_err_dev(rxe, "returned err = %d\n", err); 181 return err; 182 } 183 184 static int rxe_port_immutable(struct ib_device *ibdev, u32 port_num, 185 struct ib_port_immutable *immutable) 186 { 187 struct rxe_dev *rxe = to_rdev(ibdev); 188 struct ib_port_attr attr = {}; 189 int err; 190 191 if (port_num != 1) { 192 err = -EINVAL; 193 rxe_dbg_dev(rxe, "bad port_num = %d\n", port_num); 194 goto err_out; 195 } 196 197 err = ib_query_port(ibdev, port_num, &attr); 198 if (err) 199 goto err_out; 200 201 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 202 immutable->pkey_tbl_len = attr.pkey_tbl_len; 203 immutable->gid_tbl_len = attr.gid_tbl_len; 204 immutable->max_mad_size = IB_MGMT_MAD_SIZE; 205 206 return 0; 207 208 err_out: 209 rxe_err_dev(rxe, "returned err = %d\n", err); 210 return err; 211 } 212 213 /* uc */ 214 static int rxe_alloc_ucontext(struct ib_ucontext *ibuc, struct ib_udata *udata) 215 { 216 struct rxe_dev *rxe = to_rdev(ibuc->device); 217 struct rxe_ucontext *uc = to_ruc(ibuc); 218 int err; 219 220 err = rxe_add_to_pool(&rxe->uc_pool, uc); 221 if (err) 222 rxe_err_dev(rxe, "unable to create uc\n"); 223 224 return err; 225 } 226 227 static void rxe_dealloc_ucontext(struct ib_ucontext *ibuc) 228 { 229 struct rxe_ucontext *uc = to_ruc(ibuc); 230 int err; 231 232 err = rxe_cleanup(uc); 233 if (err) 234 rxe_err_uc(uc, "cleanup failed, err = %d\n", err); 235 } 236 237 /* pd */ 238 static int rxe_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 239 { 240 struct rxe_dev *rxe = to_rdev(ibpd->device); 241 struct rxe_pd *pd = to_rpd(ibpd); 242 int err; 243 244 err = rxe_add_to_pool(&rxe->pd_pool, pd); 245 if (err) { 246 rxe_dbg_dev(rxe, "unable to alloc pd\n"); 247 goto err_out; 248 } 249 250 return 0; 251 252 err_out: 253 rxe_err_dev(rxe, "returned err = %d\n", err); 254 return err; 255 } 256 257 static int rxe_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) 258 { 259 struct rxe_pd *pd = to_rpd(ibpd); 260 int err; 261 262 err = rxe_cleanup(pd); 263 if (err) 264 rxe_err_pd(pd, "cleanup failed, err = %d\n", err); 265 266 return 0; 267 } 268 269 /* ah */ 270 static int rxe_create_ah(struct ib_ah *ibah, 271 struct rdma_ah_init_attr *init_attr, 272 struct ib_udata *udata) 273 { 274 struct rxe_dev *rxe = to_rdev(ibah->device); 275 struct rxe_ah *ah = to_rah(ibah); 276 struct rxe_create_ah_resp __user *uresp = NULL; 277 int err, cleanup_err; 278 279 if (udata) { 280 /* test if new user provider */ 281 if (udata->outlen >= sizeof(*uresp)) 282 uresp = udata->outbuf; 283 ah->is_user = true; 284 } else { 285 ah->is_user = false; 286 } 287 288 err = rxe_add_to_pool_ah(&rxe->ah_pool, ah, 289 init_attr->flags & RDMA_CREATE_AH_SLEEPABLE); 290 if (err) { 291 rxe_dbg_dev(rxe, "unable to create ah\n"); 292 goto err_out; 293 } 294 295 /* create index > 0 */ 296 ah->ah_num = ah->elem.index; 297 298 err = rxe_ah_chk_attr(ah, init_attr->ah_attr); 299 if (err) { 300 rxe_dbg_ah(ah, "bad attr\n"); 301 goto err_cleanup; 302 } 303 304 if (uresp) { 305 /* only if new user provider */ 306 err = copy_to_user(&uresp->ah_num, &ah->ah_num, 307 sizeof(uresp->ah_num)); 308 if (err) { 309 err = -EFAULT; 310 rxe_dbg_ah(ah, "unable to copy to user\n"); 311 goto err_cleanup; 312 } 313 } else if (ah->is_user) { 314 /* only if old user provider */ 315 ah->ah_num = 0; 316 } 317 318 rxe_init_av(init_attr->ah_attr, &ah->av); 319 rxe_finalize(ah); 320 321 return 0; 322 323 err_cleanup: 324 cleanup_err = rxe_cleanup(ah); 325 if (cleanup_err) 326 rxe_err_ah(ah, "cleanup failed, err = %d\n", cleanup_err); 327 err_out: 328 rxe_err_ah(ah, "returned err = %d\n", err); 329 return err; 330 } 331 332 static int rxe_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr) 333 { 334 struct rxe_ah *ah = to_rah(ibah); 335 int err; 336 337 err = rxe_ah_chk_attr(ah, attr); 338 if (err) { 339 rxe_dbg_ah(ah, "bad attr\n"); 340 goto err_out; 341 } 342 343 rxe_init_av(attr, &ah->av); 344 345 return 0; 346 347 err_out: 348 rxe_err_ah(ah, "returned err = %d\n", err); 349 return err; 350 } 351 352 static int rxe_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr) 353 { 354 struct rxe_ah *ah = to_rah(ibah); 355 356 memset(attr, 0, sizeof(*attr)); 357 attr->type = ibah->type; 358 rxe_av_to_attr(&ah->av, attr); 359 360 return 0; 361 } 362 363 static int rxe_destroy_ah(struct ib_ah *ibah, u32 flags) 364 { 365 struct rxe_ah *ah = to_rah(ibah); 366 int err; 367 368 err = rxe_cleanup_ah(ah, flags & RDMA_DESTROY_AH_SLEEPABLE); 369 if (err) 370 rxe_err_ah(ah, "cleanup failed, err = %d\n", err); 371 372 return 0; 373 } 374 375 /* srq */ 376 static int rxe_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init, 377 struct ib_udata *udata) 378 { 379 struct rxe_dev *rxe = to_rdev(ibsrq->device); 380 struct rxe_pd *pd = to_rpd(ibsrq->pd); 381 struct rxe_srq *srq = to_rsrq(ibsrq); 382 struct rxe_create_srq_resp __user *uresp = NULL; 383 int err, cleanup_err; 384 385 if (udata) { 386 if (udata->outlen < sizeof(*uresp)) { 387 err = -EINVAL; 388 rxe_err_dev(rxe, "malformed udata\n"); 389 goto err_out; 390 } 391 uresp = udata->outbuf; 392 } 393 394 if (init->srq_type != IB_SRQT_BASIC) { 395 err = -EOPNOTSUPP; 396 rxe_dbg_dev(rxe, "srq type = %d, not supported\n", 397 init->srq_type); 398 goto err_out; 399 } 400 401 err = rxe_srq_chk_init(rxe, init); 402 if (err) { 403 rxe_dbg_dev(rxe, "invalid init attributes\n"); 404 goto err_out; 405 } 406 407 err = rxe_add_to_pool(&rxe->srq_pool, srq); 408 if (err) { 409 rxe_dbg_dev(rxe, "unable to create srq, err = %d\n", err); 410 goto err_out; 411 } 412 413 rxe_get(pd); 414 srq->pd = pd; 415 416 err = rxe_srq_from_init(rxe, srq, init, udata, uresp); 417 if (err) { 418 rxe_dbg_srq(srq, "create srq failed, err = %d\n", err); 419 goto err_cleanup; 420 } 421 422 return 0; 423 424 err_cleanup: 425 cleanup_err = rxe_cleanup(srq); 426 if (cleanup_err) 427 rxe_err_srq(srq, "cleanup failed, err = %d\n", cleanup_err); 428 err_out: 429 rxe_err_dev(rxe, "returned err = %d\n", err); 430 return err; 431 } 432 433 static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 434 enum ib_srq_attr_mask mask, 435 struct ib_udata *udata) 436 { 437 struct rxe_srq *srq = to_rsrq(ibsrq); 438 struct rxe_dev *rxe = to_rdev(ibsrq->device); 439 struct rxe_modify_srq_cmd cmd = {}; 440 int err; 441 442 if (udata) { 443 if (udata->inlen < sizeof(cmd)) { 444 err = -EINVAL; 445 rxe_dbg_srq(srq, "malformed udata\n"); 446 goto err_out; 447 } 448 449 err = ib_copy_from_udata(&cmd, udata, sizeof(cmd)); 450 if (err) { 451 err = -EFAULT; 452 rxe_dbg_srq(srq, "unable to read udata\n"); 453 goto err_out; 454 } 455 } 456 457 err = rxe_srq_chk_attr(rxe, srq, attr, mask); 458 if (err) { 459 rxe_dbg_srq(srq, "bad init attributes\n"); 460 goto err_out; 461 } 462 463 err = rxe_srq_from_attr(rxe, srq, attr, mask, &cmd, udata); 464 if (err) { 465 rxe_dbg_srq(srq, "bad attr\n"); 466 goto err_out; 467 } 468 469 return 0; 470 471 err_out: 472 rxe_err_srq(srq, "returned err = %d\n", err); 473 return err; 474 } 475 476 static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) 477 { 478 struct rxe_srq *srq = to_rsrq(ibsrq); 479 int err; 480 481 if (srq->error) { 482 err = -EINVAL; 483 rxe_dbg_srq(srq, "srq in error state\n"); 484 goto err_out; 485 } 486 487 attr->max_wr = srq->rq.queue->buf->index_mask; 488 attr->max_sge = srq->rq.max_sge; 489 attr->srq_limit = srq->limit; 490 return 0; 491 492 err_out: 493 rxe_err_srq(srq, "returned err = %d\n", err); 494 return err; 495 } 496 497 static int rxe_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr, 498 const struct ib_recv_wr **bad_wr) 499 { 500 int err = 0; 501 struct rxe_srq *srq = to_rsrq(ibsrq); 502 unsigned long flags; 503 504 spin_lock_irqsave(&srq->rq.producer_lock, flags); 505 506 while (wr) { 507 err = post_one_recv(&srq->rq, wr); 508 if (unlikely(err)) 509 break; 510 wr = wr->next; 511 } 512 513 spin_unlock_irqrestore(&srq->rq.producer_lock, flags); 514 515 if (err) { 516 *bad_wr = wr; 517 rxe_err_srq(srq, "returned err = %d\n", err); 518 } 519 520 return err; 521 } 522 523 static int rxe_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata) 524 { 525 struct rxe_srq *srq = to_rsrq(ibsrq); 526 int err; 527 528 err = rxe_cleanup(srq); 529 if (err) 530 rxe_err_srq(srq, "cleanup failed, err = %d\n", err); 531 532 return 0; 533 } 534 535 /* qp */ 536 static int rxe_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init, 537 struct ib_udata *udata) 538 { 539 struct rxe_dev *rxe = to_rdev(ibqp->device); 540 struct rxe_pd *pd = to_rpd(ibqp->pd); 541 struct rxe_qp *qp = to_rqp(ibqp); 542 struct rxe_create_qp_resp __user *uresp = NULL; 543 int err, cleanup_err; 544 545 if (udata) { 546 if (udata->inlen) { 547 err = -EINVAL; 548 rxe_dbg_dev(rxe, "malformed udata, err = %d\n", err); 549 goto err_out; 550 } 551 552 if (udata->outlen < sizeof(*uresp)) { 553 err = -EINVAL; 554 rxe_dbg_dev(rxe, "malformed udata, err = %d\n", err); 555 goto err_out; 556 } 557 558 qp->is_user = true; 559 uresp = udata->outbuf; 560 } else { 561 qp->is_user = false; 562 } 563 564 if (init->create_flags) { 565 err = -EOPNOTSUPP; 566 rxe_dbg_dev(rxe, "unsupported create_flags, err = %d\n", err); 567 goto err_out; 568 } 569 570 err = rxe_qp_chk_init(rxe, init); 571 if (err) { 572 rxe_dbg_dev(rxe, "bad init attr, err = %d\n", err); 573 goto err_out; 574 } 575 576 err = rxe_add_to_pool(&rxe->qp_pool, qp); 577 if (err) { 578 rxe_dbg_dev(rxe, "unable to create qp, err = %d\n", err); 579 goto err_out; 580 } 581 582 err = rxe_qp_from_init(rxe, qp, pd, init, uresp, ibqp->pd, udata); 583 if (err) { 584 rxe_dbg_qp(qp, "create qp failed, err = %d\n", err); 585 goto err_cleanup; 586 } 587 588 rxe_finalize(qp); 589 return 0; 590 591 err_cleanup: 592 cleanup_err = rxe_cleanup(qp); 593 if (cleanup_err) 594 rxe_err_qp(qp, "cleanup failed, err = %d\n", cleanup_err); 595 err_out: 596 rxe_err_dev(rxe, "returned err = %d\n", err); 597 return err; 598 } 599 600 static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 601 int mask, struct ib_udata *udata) 602 { 603 struct rxe_dev *rxe = to_rdev(ibqp->device); 604 struct rxe_qp *qp = to_rqp(ibqp); 605 int err; 606 607 if (mask & ~IB_QP_ATTR_STANDARD_BITS) { 608 err = -EOPNOTSUPP; 609 rxe_dbg_qp(qp, "unsupported mask = 0x%x, err = %d\n", 610 mask, err); 611 goto err_out; 612 } 613 614 err = rxe_qp_chk_attr(rxe, qp, attr, mask); 615 if (err) { 616 rxe_dbg_qp(qp, "bad mask/attr, err = %d\n", err); 617 goto err_out; 618 } 619 620 err = rxe_qp_from_attr(qp, attr, mask, udata); 621 if (err) { 622 rxe_dbg_qp(qp, "modify qp failed, err = %d\n", err); 623 goto err_out; 624 } 625 626 if ((mask & IB_QP_AV) && (attr->ah_attr.ah_flags & IB_AH_GRH)) 627 qp->src_port = rdma_get_udp_sport(attr->ah_attr.grh.flow_label, 628 qp->ibqp.qp_num, 629 qp->attr.dest_qp_num); 630 631 return 0; 632 633 err_out: 634 rxe_err_qp(qp, "returned err = %d\n", err); 635 return err; 636 } 637 638 static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 639 int mask, struct ib_qp_init_attr *init) 640 { 641 struct rxe_qp *qp = to_rqp(ibqp); 642 643 rxe_qp_to_init(qp, init); 644 rxe_qp_to_attr(qp, attr, mask); 645 646 return 0; 647 } 648 649 static int rxe_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) 650 { 651 struct rxe_qp *qp = to_rqp(ibqp); 652 int err; 653 654 err = rxe_qp_chk_destroy(qp); 655 if (err) { 656 rxe_dbg_qp(qp, "unable to destroy qp, err = %d\n", err); 657 goto err_out; 658 } 659 660 err = rxe_cleanup(qp); 661 if (err) 662 rxe_err_qp(qp, "cleanup failed, err = %d\n", err); 663 664 return 0; 665 666 err_out: 667 rxe_err_qp(qp, "returned err = %d\n", err); 668 return err; 669 } 670 671 /* send wr */ 672 673 /* sanity check incoming send work request */ 674 static int validate_send_wr(struct rxe_qp *qp, const struct ib_send_wr *ibwr, 675 unsigned int *maskp, unsigned int *lengthp) 676 { 677 int num_sge = ibwr->num_sge; 678 struct rxe_sq *sq = &qp->sq; 679 unsigned int mask = 0; 680 unsigned long length = 0; 681 int err = -EINVAL; 682 int i; 683 684 do { 685 mask = wr_opcode_mask(ibwr->opcode, qp); 686 if (!mask) { 687 rxe_err_qp(qp, "bad wr opcode for qp type\n"); 688 break; 689 } 690 691 if (num_sge > sq->max_sge) { 692 rxe_err_qp(qp, "num_sge > max_sge\n"); 693 break; 694 } 695 696 length = 0; 697 for (i = 0; i < ibwr->num_sge; i++) 698 length += ibwr->sg_list[i].length; 699 700 if (length > RXE_PORT_MAX_MSG_SZ) { 701 rxe_err_qp(qp, "message length too long\n"); 702 break; 703 } 704 705 if (mask & WR_ATOMIC_MASK) { 706 if (length != 8) { 707 rxe_err_qp(qp, "atomic length != 8\n"); 708 break; 709 } 710 if (atomic_wr(ibwr)->remote_addr & 0x7) { 711 rxe_err_qp(qp, "misaligned atomic address\n"); 712 break; 713 } 714 } 715 if (ibwr->send_flags & IB_SEND_INLINE) { 716 if (!(mask & WR_INLINE_MASK)) { 717 rxe_err_qp(qp, "opcode doesn't support inline data\n"); 718 break; 719 } 720 if (length > sq->max_inline) { 721 rxe_err_qp(qp, "inline length too big\n"); 722 break; 723 } 724 } 725 726 err = 0; 727 } while (0); 728 729 *maskp = mask; 730 *lengthp = (int)length; 731 732 return err; 733 } 734 735 static int init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr, 736 const struct ib_send_wr *ibwr) 737 { 738 wr->wr_id = ibwr->wr_id; 739 wr->opcode = ibwr->opcode; 740 wr->send_flags = ibwr->send_flags; 741 742 if (qp_type(qp) == IB_QPT_UD || 743 qp_type(qp) == IB_QPT_GSI) { 744 struct ib_ah *ibah = ud_wr(ibwr)->ah; 745 746 wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn; 747 wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey; 748 wr->wr.ud.ah_num = to_rah(ibah)->ah_num; 749 if (qp_type(qp) == IB_QPT_GSI) 750 wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index; 751 752 switch (wr->opcode) { 753 case IB_WR_SEND_WITH_IMM: 754 wr->ex.imm_data = ibwr->ex.imm_data; 755 break; 756 case IB_WR_SEND: 757 break; 758 default: 759 rxe_err_qp(qp, "bad wr opcode %d for UD/GSI QP\n", 760 wr->opcode); 761 return -EINVAL; 762 } 763 } else { 764 switch (wr->opcode) { 765 case IB_WR_RDMA_WRITE_WITH_IMM: 766 wr->ex.imm_data = ibwr->ex.imm_data; 767 fallthrough; 768 case IB_WR_RDMA_READ: 769 case IB_WR_RDMA_WRITE: 770 wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr; 771 wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey; 772 break; 773 case IB_WR_SEND_WITH_IMM: 774 wr->ex.imm_data = ibwr->ex.imm_data; 775 break; 776 case IB_WR_SEND_WITH_INV: 777 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 778 break; 779 case IB_WR_RDMA_READ_WITH_INV: 780 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 781 wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr; 782 wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey; 783 break; 784 case IB_WR_ATOMIC_CMP_AND_SWP: 785 case IB_WR_ATOMIC_FETCH_AND_ADD: 786 wr->wr.atomic.remote_addr = 787 atomic_wr(ibwr)->remote_addr; 788 wr->wr.atomic.compare_add = 789 atomic_wr(ibwr)->compare_add; 790 wr->wr.atomic.swap = atomic_wr(ibwr)->swap; 791 wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey; 792 break; 793 case IB_WR_LOCAL_INV: 794 wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 795 break; 796 case IB_WR_REG_MR: 797 wr->wr.reg.mr = reg_wr(ibwr)->mr; 798 wr->wr.reg.key = reg_wr(ibwr)->key; 799 wr->wr.reg.access = reg_wr(ibwr)->access; 800 break; 801 case IB_WR_SEND: 802 case IB_WR_BIND_MW: 803 case IB_WR_FLUSH: 804 case IB_WR_ATOMIC_WRITE: 805 break; 806 default: 807 rxe_err_qp(qp, "unsupported wr opcode %d\n", 808 wr->opcode); 809 return -EINVAL; 810 } 811 } 812 813 return 0; 814 } 815 816 static void copy_inline_data_to_wqe(struct rxe_send_wqe *wqe, 817 const struct ib_send_wr *ibwr) 818 { 819 struct ib_sge *sge = ibwr->sg_list; 820 u8 *p = wqe->dma.inline_data; 821 int i; 822 823 for (i = 0; i < ibwr->num_sge; i++, sge++) { 824 memcpy(p, ib_virt_dma_to_ptr(sge->addr), sge->length); 825 p += sge->length; 826 } 827 } 828 829 static int init_send_wqe(struct rxe_qp *qp, const struct ib_send_wr *ibwr, 830 unsigned int mask, unsigned int length, 831 struct rxe_send_wqe *wqe) 832 { 833 int num_sge = ibwr->num_sge; 834 int err; 835 836 err = init_send_wr(qp, &wqe->wr, ibwr); 837 if (err) 838 return err; 839 840 /* local operation */ 841 if (unlikely(mask & WR_LOCAL_OP_MASK)) { 842 wqe->mask = mask; 843 wqe->state = wqe_state_posted; 844 return 0; 845 } 846 847 if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) 848 copy_inline_data_to_wqe(wqe, ibwr); 849 else 850 memcpy(wqe->dma.sge, ibwr->sg_list, 851 num_sge * sizeof(struct ib_sge)); 852 853 wqe->iova = mask & WR_ATOMIC_MASK ? atomic_wr(ibwr)->remote_addr : 854 mask & WR_READ_OR_WRITE_MASK ? rdma_wr(ibwr)->remote_addr : 0; 855 wqe->mask = mask; 856 wqe->dma.length = length; 857 wqe->dma.resid = length; 858 wqe->dma.num_sge = num_sge; 859 wqe->dma.cur_sge = 0; 860 wqe->dma.sge_offset = 0; 861 wqe->state = wqe_state_posted; 862 wqe->ssn = atomic_add_return(1, &qp->ssn); 863 864 return 0; 865 } 866 867 static int post_one_send(struct rxe_qp *qp, const struct ib_send_wr *ibwr) 868 { 869 int err; 870 struct rxe_sq *sq = &qp->sq; 871 struct rxe_send_wqe *send_wqe; 872 unsigned int mask; 873 unsigned int length; 874 int full; 875 876 err = validate_send_wr(qp, ibwr, &mask, &length); 877 if (err) 878 return err; 879 880 full = queue_full(sq->queue, QUEUE_TYPE_FROM_ULP); 881 if (unlikely(full)) { 882 rxe_err_qp(qp, "send queue full\n"); 883 return -ENOMEM; 884 } 885 886 send_wqe = queue_producer_addr(sq->queue, QUEUE_TYPE_FROM_ULP); 887 err = init_send_wqe(qp, ibwr, mask, length, send_wqe); 888 if (!err) 889 queue_advance_producer(sq->queue, QUEUE_TYPE_FROM_ULP); 890 891 return err; 892 } 893 894 static int rxe_post_send_kernel(struct rxe_qp *qp, 895 const struct ib_send_wr *ibwr, 896 const struct ib_send_wr **bad_wr) 897 { 898 int err = 0; 899 unsigned long flags; 900 int good = 0; 901 902 spin_lock_irqsave(&qp->sq.sq_lock, flags); 903 while (ibwr) { 904 err = post_one_send(qp, ibwr); 905 if (err) { 906 *bad_wr = ibwr; 907 break; 908 } else { 909 good++; 910 } 911 ibwr = ibwr->next; 912 } 913 spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 914 915 /* kickoff processing of any posted wqes */ 916 if (good) 917 rxe_sched_task(&qp->send_task); 918 919 return err; 920 } 921 922 static int rxe_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, 923 const struct ib_send_wr **bad_wr) 924 { 925 struct rxe_qp *qp = to_rqp(ibqp); 926 int err; 927 unsigned long flags; 928 929 spin_lock_irqsave(&qp->state_lock, flags); 930 /* caller has already called destroy_qp */ 931 if (WARN_ON_ONCE(!qp->valid)) { 932 spin_unlock_irqrestore(&qp->state_lock, flags); 933 rxe_err_qp(qp, "qp has been destroyed\n"); 934 return -EINVAL; 935 } 936 937 if (unlikely(qp_state(qp) < IB_QPS_RTS)) { 938 spin_unlock_irqrestore(&qp->state_lock, flags); 939 *bad_wr = wr; 940 rxe_err_qp(qp, "qp not ready to send\n"); 941 return -EINVAL; 942 } 943 spin_unlock_irqrestore(&qp->state_lock, flags); 944 945 if (qp->is_user) { 946 /* Utilize process context to do protocol processing */ 947 rxe_sched_task(&qp->send_task); 948 } else { 949 err = rxe_post_send_kernel(qp, wr, bad_wr); 950 if (err) 951 return err; 952 } 953 954 return 0; 955 } 956 957 /* recv wr */ 958 static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr) 959 { 960 int i; 961 unsigned long length; 962 struct rxe_recv_wqe *recv_wqe; 963 int num_sge = ibwr->num_sge; 964 int full; 965 int err; 966 967 full = queue_full(rq->queue, QUEUE_TYPE_FROM_ULP); 968 if (unlikely(full)) { 969 err = -ENOMEM; 970 rxe_dbg("queue full\n"); 971 goto err_out; 972 } 973 974 if (unlikely(num_sge > rq->max_sge)) { 975 err = -EINVAL; 976 rxe_dbg("bad num_sge > max_sge\n"); 977 goto err_out; 978 } 979 980 length = 0; 981 for (i = 0; i < num_sge; i++) 982 length += ibwr->sg_list[i].length; 983 984 if (length > RXE_PORT_MAX_MSG_SZ) { 985 err = -EINVAL; 986 rxe_dbg("message length too long\n"); 987 goto err_out; 988 } 989 990 recv_wqe = queue_producer_addr(rq->queue, QUEUE_TYPE_FROM_ULP); 991 992 recv_wqe->wr_id = ibwr->wr_id; 993 recv_wqe->dma.length = length; 994 recv_wqe->dma.resid = length; 995 recv_wqe->dma.num_sge = num_sge; 996 recv_wqe->dma.cur_sge = 0; 997 recv_wqe->dma.sge_offset = 0; 998 memcpy(recv_wqe->dma.sge, ibwr->sg_list, 999 num_sge * sizeof(struct ib_sge)); 1000 1001 queue_advance_producer(rq->queue, QUEUE_TYPE_FROM_ULP); 1002 1003 return 0; 1004 1005 err_out: 1006 rxe_dbg("returned err = %d\n", err); 1007 return err; 1008 } 1009 1010 static int rxe_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr, 1011 const struct ib_recv_wr **bad_wr) 1012 { 1013 int err = 0; 1014 struct rxe_qp *qp = to_rqp(ibqp); 1015 struct rxe_rq *rq = &qp->rq; 1016 unsigned long flags; 1017 1018 spin_lock_irqsave(&qp->state_lock, flags); 1019 /* caller has already called destroy_qp */ 1020 if (WARN_ON_ONCE(!qp->valid)) { 1021 spin_unlock_irqrestore(&qp->state_lock, flags); 1022 rxe_err_qp(qp, "qp has been destroyed\n"); 1023 return -EINVAL; 1024 } 1025 1026 /* see C10-97.2.1 */ 1027 if (unlikely((qp_state(qp) < IB_QPS_INIT))) { 1028 spin_unlock_irqrestore(&qp->state_lock, flags); 1029 *bad_wr = wr; 1030 rxe_dbg_qp(qp, "qp not ready to post recv\n"); 1031 return -EINVAL; 1032 } 1033 spin_unlock_irqrestore(&qp->state_lock, flags); 1034 1035 if (unlikely(qp->srq)) { 1036 *bad_wr = wr; 1037 rxe_dbg_qp(qp, "qp has srq, use post_srq_recv instead\n"); 1038 return -EINVAL; 1039 } 1040 1041 spin_lock_irqsave(&rq->producer_lock, flags); 1042 1043 while (wr) { 1044 err = post_one_recv(rq, wr); 1045 if (unlikely(err)) { 1046 *bad_wr = wr; 1047 break; 1048 } 1049 wr = wr->next; 1050 } 1051 1052 spin_unlock_irqrestore(&rq->producer_lock, flags); 1053 1054 spin_lock_irqsave(&qp->state_lock, flags); 1055 if (qp_state(qp) == IB_QPS_ERR) 1056 rxe_sched_task(&qp->recv_task); 1057 spin_unlock_irqrestore(&qp->state_lock, flags); 1058 1059 return err; 1060 } 1061 1062 /* cq */ 1063 static int rxe_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 1064 struct uverbs_attr_bundle *attrs) 1065 { 1066 struct ib_udata *udata = &attrs->driver_udata; 1067 struct ib_device *dev = ibcq->device; 1068 struct rxe_dev *rxe = to_rdev(dev); 1069 struct rxe_cq *cq = to_rcq(ibcq); 1070 struct rxe_create_cq_resp __user *uresp = NULL; 1071 int err, cleanup_err; 1072 1073 if (udata) { 1074 if (udata->outlen < sizeof(*uresp)) { 1075 err = -EINVAL; 1076 rxe_dbg_dev(rxe, "malformed udata, err = %d\n", err); 1077 goto err_out; 1078 } 1079 uresp = udata->outbuf; 1080 } 1081 1082 if (attr->flags) { 1083 err = -EOPNOTSUPP; 1084 rxe_dbg_dev(rxe, "bad attr->flags, err = %d\n", err); 1085 goto err_out; 1086 } 1087 1088 err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector); 1089 if (err) { 1090 rxe_dbg_dev(rxe, "bad init attributes, err = %d\n", err); 1091 goto err_out; 1092 } 1093 1094 err = rxe_add_to_pool(&rxe->cq_pool, cq); 1095 if (err) { 1096 rxe_dbg_dev(rxe, "unable to create cq, err = %d\n", err); 1097 goto err_out; 1098 } 1099 1100 err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector, udata, 1101 uresp); 1102 if (err) { 1103 rxe_dbg_cq(cq, "create cq failed, err = %d\n", err); 1104 goto err_cleanup; 1105 } 1106 1107 return 0; 1108 1109 err_cleanup: 1110 cleanup_err = rxe_cleanup(cq); 1111 if (cleanup_err) 1112 rxe_err_cq(cq, "cleanup failed, err = %d\n", cleanup_err); 1113 err_out: 1114 rxe_err_dev(rxe, "returned err = %d\n", err); 1115 return err; 1116 } 1117 1118 static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) 1119 { 1120 struct rxe_cq *cq = to_rcq(ibcq); 1121 struct rxe_dev *rxe = to_rdev(ibcq->device); 1122 struct rxe_resize_cq_resp __user *uresp = NULL; 1123 int err; 1124 1125 if (udata) { 1126 if (udata->outlen < sizeof(*uresp)) { 1127 err = -EINVAL; 1128 rxe_dbg_cq(cq, "malformed udata\n"); 1129 goto err_out; 1130 } 1131 uresp = udata->outbuf; 1132 } 1133 1134 err = rxe_cq_chk_attr(rxe, cq, cqe, 0); 1135 if (err) { 1136 rxe_dbg_cq(cq, "bad attr, err = %d\n", err); 1137 goto err_out; 1138 } 1139 1140 err = rxe_cq_resize_queue(cq, cqe, uresp, udata); 1141 if (err) { 1142 rxe_dbg_cq(cq, "resize cq failed, err = %d\n", err); 1143 goto err_out; 1144 } 1145 1146 return 0; 1147 1148 err_out: 1149 rxe_err_cq(cq, "returned err = %d\n", err); 1150 return err; 1151 } 1152 1153 static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 1154 { 1155 int i; 1156 struct rxe_cq *cq = to_rcq(ibcq); 1157 struct rxe_cqe *cqe; 1158 unsigned long flags; 1159 1160 spin_lock_irqsave(&cq->cq_lock, flags); 1161 for (i = 0; i < num_entries; i++) { 1162 cqe = queue_head(cq->queue, QUEUE_TYPE_TO_ULP); 1163 if (!cqe) 1164 break; /* queue empty */ 1165 1166 memcpy(wc++, &cqe->ibwc, sizeof(*wc)); 1167 queue_advance_consumer(cq->queue, QUEUE_TYPE_TO_ULP); 1168 } 1169 spin_unlock_irqrestore(&cq->cq_lock, flags); 1170 1171 return i; 1172 } 1173 1174 static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt) 1175 { 1176 struct rxe_cq *cq = to_rcq(ibcq); 1177 int count; 1178 1179 count = queue_count(cq->queue, QUEUE_TYPE_TO_ULP); 1180 1181 return (count > wc_cnt) ? wc_cnt : count; 1182 } 1183 1184 static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 1185 { 1186 struct rxe_cq *cq = to_rcq(ibcq); 1187 int ret = 0; 1188 int empty; 1189 unsigned long irq_flags; 1190 1191 spin_lock_irqsave(&cq->cq_lock, irq_flags); 1192 cq->notify |= flags & IB_CQ_SOLICITED_MASK; 1193 empty = queue_empty(cq->queue, QUEUE_TYPE_TO_ULP); 1194 1195 if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !empty) 1196 ret = 1; 1197 1198 spin_unlock_irqrestore(&cq->cq_lock, irq_flags); 1199 1200 return ret; 1201 } 1202 1203 static int rxe_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) 1204 { 1205 struct rxe_cq *cq = to_rcq(ibcq); 1206 int err; 1207 1208 /* See IBA C11-17: The CI shall return an error if this Verb is 1209 * invoked while a Work Queue is still associated with the CQ. 1210 */ 1211 if (atomic_read(&cq->num_wq)) { 1212 err = -EINVAL; 1213 rxe_dbg_cq(cq, "still in use\n"); 1214 goto err_out; 1215 } 1216 1217 err = rxe_cleanup(cq); 1218 if (err) 1219 rxe_err_cq(cq, "cleanup failed, err = %d\n", err); 1220 1221 return 0; 1222 1223 err_out: 1224 rxe_err_cq(cq, "returned err = %d\n", err); 1225 return err; 1226 } 1227 1228 /* mr */ 1229 static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access) 1230 { 1231 struct rxe_dev *rxe = to_rdev(ibpd->device); 1232 struct rxe_pd *pd = to_rpd(ibpd); 1233 struct rxe_mr *mr; 1234 int err; 1235 1236 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 1237 if (!mr) 1238 return ERR_PTR(-ENOMEM); 1239 1240 err = rxe_add_to_pool(&rxe->mr_pool, mr); 1241 if (err) { 1242 rxe_dbg_dev(rxe, "unable to create mr\n"); 1243 goto err_free; 1244 } 1245 1246 rxe_get(pd); 1247 mr->ibmr.pd = ibpd; 1248 mr->ibmr.device = ibpd->device; 1249 1250 rxe_mr_init_dma(access, mr); 1251 rxe_finalize(mr); 1252 return &mr->ibmr; 1253 1254 err_free: 1255 kfree(mr); 1256 rxe_err_pd(pd, "returned err = %d\n", err); 1257 return ERR_PTR(err); 1258 } 1259 1260 static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd, u64 start, 1261 u64 length, u64 iova, int access, 1262 struct ib_udata *udata) 1263 { 1264 struct rxe_dev *rxe = to_rdev(ibpd->device); 1265 struct rxe_pd *pd = to_rpd(ibpd); 1266 struct rxe_mr *mr; 1267 int err, cleanup_err; 1268 1269 if (access & ~RXE_ACCESS_SUPPORTED_MR) { 1270 rxe_err_pd(pd, "access = %#x not supported (%#x)\n", access, 1271 RXE_ACCESS_SUPPORTED_MR); 1272 return ERR_PTR(-EOPNOTSUPP); 1273 } 1274 1275 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 1276 if (!mr) 1277 return ERR_PTR(-ENOMEM); 1278 1279 err = rxe_add_to_pool(&rxe->mr_pool, mr); 1280 if (err) { 1281 rxe_dbg_pd(pd, "unable to create mr\n"); 1282 goto err_free; 1283 } 1284 1285 rxe_get(pd); 1286 mr->ibmr.pd = ibpd; 1287 mr->ibmr.device = ibpd->device; 1288 1289 err = rxe_mr_init_user(rxe, start, length, access, mr); 1290 if (err) { 1291 rxe_dbg_mr(mr, "reg_user_mr failed, err = %d\n", err); 1292 goto err_cleanup; 1293 } 1294 1295 rxe_finalize(mr); 1296 return &mr->ibmr; 1297 1298 err_cleanup: 1299 cleanup_err = rxe_cleanup(mr); 1300 if (cleanup_err) 1301 rxe_err_mr(mr, "cleanup failed, err = %d\n", cleanup_err); 1302 err_free: 1303 kfree(mr); 1304 rxe_err_pd(pd, "returned err = %d\n", err); 1305 return ERR_PTR(err); 1306 } 1307 1308 static struct ib_mr *rxe_rereg_user_mr(struct ib_mr *ibmr, int flags, 1309 u64 start, u64 length, u64 iova, 1310 int access, struct ib_pd *ibpd, 1311 struct ib_udata *udata) 1312 { 1313 struct rxe_mr *mr = to_rmr(ibmr); 1314 struct rxe_pd *old_pd = to_rpd(ibmr->pd); 1315 struct rxe_pd *pd = to_rpd(ibpd); 1316 1317 /* for now only support the two easy cases: 1318 * rereg_pd and rereg_access 1319 */ 1320 if (flags & ~RXE_MR_REREG_SUPPORTED) { 1321 rxe_err_mr(mr, "flags = %#x not supported\n", flags); 1322 return ERR_PTR(-EOPNOTSUPP); 1323 } 1324 1325 if (flags & IB_MR_REREG_PD) { 1326 rxe_put(old_pd); 1327 rxe_get(pd); 1328 mr->ibmr.pd = ibpd; 1329 } 1330 1331 if (flags & IB_MR_REREG_ACCESS) { 1332 if (access & ~RXE_ACCESS_SUPPORTED_MR) { 1333 rxe_err_mr(mr, "access = %#x not supported\n", access); 1334 return ERR_PTR(-EOPNOTSUPP); 1335 } 1336 mr->access = access; 1337 } 1338 1339 return NULL; 1340 } 1341 1342 static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type, 1343 u32 max_num_sg) 1344 { 1345 struct rxe_dev *rxe = to_rdev(ibpd->device); 1346 struct rxe_pd *pd = to_rpd(ibpd); 1347 struct rxe_mr *mr; 1348 int err, cleanup_err; 1349 1350 if (mr_type != IB_MR_TYPE_MEM_REG) { 1351 err = -EINVAL; 1352 rxe_dbg_pd(pd, "mr type %d not supported, err = %d\n", 1353 mr_type, err); 1354 goto err_out; 1355 } 1356 1357 mr = kzalloc(sizeof(*mr), GFP_KERNEL); 1358 if (!mr) 1359 return ERR_PTR(-ENOMEM); 1360 1361 err = rxe_add_to_pool(&rxe->mr_pool, mr); 1362 if (err) 1363 goto err_free; 1364 1365 rxe_get(pd); 1366 mr->ibmr.pd = ibpd; 1367 mr->ibmr.device = ibpd->device; 1368 1369 err = rxe_mr_init_fast(max_num_sg, mr); 1370 if (err) { 1371 rxe_dbg_mr(mr, "alloc_mr failed, err = %d\n", err); 1372 goto err_cleanup; 1373 } 1374 1375 rxe_finalize(mr); 1376 return &mr->ibmr; 1377 1378 err_cleanup: 1379 cleanup_err = rxe_cleanup(mr); 1380 if (cleanup_err) 1381 rxe_err_mr(mr, "cleanup failed, err = %d\n", err); 1382 err_free: 1383 kfree(mr); 1384 err_out: 1385 rxe_err_pd(pd, "returned err = %d\n", err); 1386 return ERR_PTR(err); 1387 } 1388 1389 static int rxe_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) 1390 { 1391 struct rxe_mr *mr = to_rmr(ibmr); 1392 int err, cleanup_err; 1393 1394 /* See IBA 10.6.7.2.6 */ 1395 if (atomic_read(&mr->num_mw) > 0) { 1396 err = -EINVAL; 1397 rxe_dbg_mr(mr, "mr has mw's bound\n"); 1398 goto err_out; 1399 } 1400 1401 cleanup_err = rxe_cleanup(mr); 1402 if (cleanup_err) 1403 rxe_err_mr(mr, "cleanup failed, err = %d\n", cleanup_err); 1404 1405 kfree_rcu_mightsleep(mr); 1406 return 0; 1407 1408 err_out: 1409 rxe_err_mr(mr, "returned err = %d\n", err); 1410 return err; 1411 } 1412 1413 static ssize_t parent_show(struct device *device, 1414 struct device_attribute *attr, char *buf) 1415 { 1416 struct rxe_dev *rxe = 1417 rdma_device_to_drv_device(device, struct rxe_dev, ib_dev); 1418 1419 return sysfs_emit(buf, "%s\n", rxe_parent_name(rxe, 1)); 1420 } 1421 1422 static DEVICE_ATTR_RO(parent); 1423 1424 static struct attribute *rxe_dev_attributes[] = { 1425 &dev_attr_parent.attr, 1426 NULL 1427 }; 1428 1429 static const struct attribute_group rxe_attr_group = { 1430 .attrs = rxe_dev_attributes, 1431 }; 1432 1433 static int rxe_enable_driver(struct ib_device *ib_dev) 1434 { 1435 struct rxe_dev *rxe = container_of(ib_dev, struct rxe_dev, ib_dev); 1436 struct net_device *ndev; 1437 1438 ndev = rxe_ib_device_get_netdev(ib_dev); 1439 if (!ndev) 1440 return -ENODEV; 1441 1442 rxe_set_port_state(rxe); 1443 dev_info(&rxe->ib_dev.dev, "added %s\n", netdev_name(ndev)); 1444 1445 dev_put(ndev); 1446 return 0; 1447 } 1448 1449 static const struct ib_device_ops rxe_dev_ops = { 1450 .owner = THIS_MODULE, 1451 .driver_id = RDMA_DRIVER_RXE, 1452 .uverbs_abi_ver = RXE_UVERBS_ABI_VERSION, 1453 1454 .alloc_hw_port_stats = rxe_ib_alloc_hw_port_stats, 1455 .alloc_mr = rxe_alloc_mr, 1456 .alloc_mw = rxe_alloc_mw, 1457 .alloc_pd = rxe_alloc_pd, 1458 .alloc_ucontext = rxe_alloc_ucontext, 1459 .attach_mcast = rxe_attach_mcast, 1460 .create_ah = rxe_create_ah, 1461 .create_cq = rxe_create_cq, 1462 .create_qp = rxe_create_qp, 1463 .create_srq = rxe_create_srq, 1464 .create_user_ah = rxe_create_ah, 1465 .dealloc_driver = rxe_dealloc, 1466 .dealloc_mw = rxe_dealloc_mw, 1467 .dealloc_pd = rxe_dealloc_pd, 1468 .dealloc_ucontext = rxe_dealloc_ucontext, 1469 .dereg_mr = rxe_dereg_mr, 1470 .destroy_ah = rxe_destroy_ah, 1471 .destroy_cq = rxe_destroy_cq, 1472 .destroy_qp = rxe_destroy_qp, 1473 .destroy_srq = rxe_destroy_srq, 1474 .detach_mcast = rxe_detach_mcast, 1475 .device_group = &rxe_attr_group, 1476 .enable_driver = rxe_enable_driver, 1477 .get_dma_mr = rxe_get_dma_mr, 1478 .get_hw_stats = rxe_ib_get_hw_stats, 1479 .get_link_layer = rxe_get_link_layer, 1480 .get_port_immutable = rxe_port_immutable, 1481 .map_mr_sg = rxe_map_mr_sg, 1482 .mmap = rxe_mmap, 1483 .modify_ah = rxe_modify_ah, 1484 .modify_device = rxe_modify_device, 1485 .modify_port = rxe_modify_port, 1486 .modify_qp = rxe_modify_qp, 1487 .modify_srq = rxe_modify_srq, 1488 .peek_cq = rxe_peek_cq, 1489 .poll_cq = rxe_poll_cq, 1490 .post_recv = rxe_post_recv, 1491 .post_send = rxe_post_send, 1492 .post_srq_recv = rxe_post_srq_recv, 1493 .query_ah = rxe_query_ah, 1494 .query_device = rxe_query_device, 1495 .query_pkey = rxe_query_pkey, 1496 .query_port = rxe_query_port, 1497 .query_qp = rxe_query_qp, 1498 .query_srq = rxe_query_srq, 1499 .reg_user_mr = rxe_reg_user_mr, 1500 .req_notify_cq = rxe_req_notify_cq, 1501 .rereg_user_mr = rxe_rereg_user_mr, 1502 .resize_cq = rxe_resize_cq, 1503 1504 INIT_RDMA_OBJ_SIZE(ib_ah, rxe_ah, ibah), 1505 INIT_RDMA_OBJ_SIZE(ib_cq, rxe_cq, ibcq), 1506 INIT_RDMA_OBJ_SIZE(ib_pd, rxe_pd, ibpd), 1507 INIT_RDMA_OBJ_SIZE(ib_qp, rxe_qp, ibqp), 1508 INIT_RDMA_OBJ_SIZE(ib_srq, rxe_srq, ibsrq), 1509 INIT_RDMA_OBJ_SIZE(ib_ucontext, rxe_ucontext, ibuc), 1510 INIT_RDMA_OBJ_SIZE(ib_mw, rxe_mw, ibmw), 1511 }; 1512 1513 int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name, 1514 struct net_device *ndev) 1515 { 1516 int err; 1517 struct ib_device *dev = &rxe->ib_dev; 1518 1519 strscpy(dev->node_desc, "rxe", sizeof(dev->node_desc)); 1520 1521 dev->node_type = RDMA_NODE_IB_CA; 1522 dev->phys_port_cnt = 1; 1523 dev->num_comp_vectors = num_possible_cpus(); 1524 dev->local_dma_lkey = 0; 1525 addrconf_addr_eui48((unsigned char *)&dev->node_guid, 1526 ndev->dev_addr); 1527 1528 dev->uverbs_cmd_mask |= BIT_ULL(IB_USER_VERBS_CMD_POST_SEND) | 1529 BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ); 1530 1531 ib_set_device_ops(dev, &rxe_dev_ops); 1532 err = ib_device_set_netdev(&rxe->ib_dev, ndev, 1); 1533 if (err) 1534 return err; 1535 1536 err = rxe_icrc_init(rxe); 1537 if (err) 1538 return err; 1539 1540 err = ib_register_device(dev, ibdev_name, NULL); 1541 if (err) 1542 rxe_dbg_dev(rxe, "failed with error %d\n", err); 1543 1544 /* 1545 * Note that rxe may be invalid at this point if another thread 1546 * unregistered it. 1547 */ 1548 return err; 1549 } 1550