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