1 /* 2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/etherdevice.h> 34 #include <rdma/ib_umem.h> 35 #include <rdma/ib_cache.h> 36 #include <rdma/ib_user_verbs.h> 37 #include <rdma/rdma_counter.h> 38 #include <linux/mlx5/fs.h> 39 #include "mlx5_ib.h" 40 #include "ib_rep.h" 41 #include "counters.h" 42 #include "cmd.h" 43 #include "umr.h" 44 #include "qp.h" 45 #include "wr.h" 46 47 enum { 48 MLX5_IB_ACK_REQ_FREQ = 8, 49 }; 50 51 enum { 52 MLX5_IB_DEFAULT_SCHED_QUEUE = 0x83, 53 MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f, 54 MLX5_IB_LINK_TYPE_IB = 0, 55 MLX5_IB_LINK_TYPE_ETH = 1 56 }; 57 58 enum raw_qp_set_mask_map { 59 MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID = 1UL << 0, 60 MLX5_RAW_QP_RATE_LIMIT = 1UL << 1, 61 }; 62 63 enum { 64 MLX5_QP_RM_GO_BACK_N = 0x1, 65 }; 66 67 struct mlx5_modify_raw_qp_param { 68 u16 operation; 69 70 u32 set_mask; /* raw_qp_set_mask_map */ 71 72 struct mlx5_rate_limit rl; 73 74 u8 rq_q_ctr_id; 75 u32 port; 76 }; 77 78 struct mlx5_ib_qp_event_work { 79 struct work_struct work; 80 struct mlx5_core_qp *qp; 81 int type; 82 }; 83 84 static struct workqueue_struct *mlx5_ib_qp_event_wq; 85 86 static void get_cqs(enum ib_qp_type qp_type, 87 struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq, 88 struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq); 89 90 static int is_qp0(enum ib_qp_type qp_type) 91 { 92 return qp_type == IB_QPT_SMI; 93 } 94 95 static int is_sqp(enum ib_qp_type qp_type) 96 { 97 return is_qp0(qp_type) || is_qp1(qp_type); 98 } 99 100 /** 101 * mlx5_ib_read_user_wqe_common() - Copy a WQE (or part of) from user WQ 102 * to kernel buffer 103 * 104 * @umem: User space memory where the WQ is 105 * @buffer: buffer to copy to 106 * @buflen: buffer length 107 * @wqe_index: index of WQE to copy from 108 * @wq_offset: offset to start of WQ 109 * @wq_wqe_cnt: number of WQEs in WQ 110 * @wq_wqe_shift: log2 of WQE size 111 * @bcnt: number of bytes to copy 112 * @bytes_copied: number of bytes to copy (return value) 113 * 114 * Copies from start of WQE bcnt or less bytes. 115 * Does not gurantee to copy the entire WQE. 116 * 117 * Return: zero on success, or an error code. 118 */ 119 static int mlx5_ib_read_user_wqe_common(struct ib_umem *umem, void *buffer, 120 size_t buflen, int wqe_index, 121 int wq_offset, int wq_wqe_cnt, 122 int wq_wqe_shift, int bcnt, 123 size_t *bytes_copied) 124 { 125 size_t offset = wq_offset + ((wqe_index % wq_wqe_cnt) << wq_wqe_shift); 126 size_t wq_end = wq_offset + (wq_wqe_cnt << wq_wqe_shift); 127 size_t copy_length; 128 int ret; 129 130 /* don't copy more than requested, more than buffer length or 131 * beyond WQ end 132 */ 133 copy_length = min_t(u32, buflen, wq_end - offset); 134 copy_length = min_t(u32, copy_length, bcnt); 135 136 ret = ib_umem_copy_from(buffer, umem, offset, copy_length); 137 if (ret) 138 return ret; 139 140 if (!ret && bytes_copied) 141 *bytes_copied = copy_length; 142 143 return 0; 144 } 145 146 static int mlx5_ib_read_kernel_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, 147 void *buffer, size_t buflen, size_t *bc) 148 { 149 struct mlx5_wqe_ctrl_seg *ctrl; 150 size_t bytes_copied = 0; 151 size_t wqe_length; 152 void *p; 153 int ds; 154 155 wqe_index = wqe_index & qp->sq.fbc.sz_m1; 156 157 /* read the control segment first */ 158 p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, wqe_index); 159 ctrl = p; 160 ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK; 161 wqe_length = ds * MLX5_WQE_DS_UNITS; 162 163 /* read rest of WQE if it spreads over more than one stride */ 164 while (bytes_copied < wqe_length) { 165 size_t copy_length = 166 min_t(size_t, buflen - bytes_copied, MLX5_SEND_WQE_BB); 167 168 if (!copy_length) 169 break; 170 171 memcpy(buffer + bytes_copied, p, copy_length); 172 bytes_copied += copy_length; 173 174 wqe_index = (wqe_index + 1) & qp->sq.fbc.sz_m1; 175 p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, wqe_index); 176 } 177 *bc = bytes_copied; 178 return 0; 179 } 180 181 static int mlx5_ib_read_user_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, 182 void *buffer, size_t buflen, size_t *bc) 183 { 184 struct mlx5_ib_qp_base *base = &qp->trans_qp.base; 185 struct ib_umem *umem = base->ubuffer.umem; 186 struct mlx5_ib_wq *wq = &qp->sq; 187 struct mlx5_wqe_ctrl_seg *ctrl; 188 size_t bytes_copied; 189 size_t bytes_copied2; 190 size_t wqe_length; 191 int ret; 192 int ds; 193 194 /* at first read as much as possible */ 195 ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index, 196 wq->offset, wq->wqe_cnt, 197 wq->wqe_shift, buflen, 198 &bytes_copied); 199 if (ret) 200 return ret; 201 202 /* we need at least control segment size to proceed */ 203 if (bytes_copied < sizeof(*ctrl)) 204 return -EINVAL; 205 206 ctrl = buffer; 207 ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK; 208 wqe_length = ds * MLX5_WQE_DS_UNITS; 209 210 /* if we copied enough then we are done */ 211 if (bytes_copied >= wqe_length) { 212 *bc = bytes_copied; 213 return 0; 214 } 215 216 /* otherwise this a wrapped around wqe 217 * so read the remaining bytes starting 218 * from wqe_index 0 219 */ 220 ret = mlx5_ib_read_user_wqe_common(umem, buffer + bytes_copied, 221 buflen - bytes_copied, 0, wq->offset, 222 wq->wqe_cnt, wq->wqe_shift, 223 wqe_length - bytes_copied, 224 &bytes_copied2); 225 226 if (ret) 227 return ret; 228 *bc = bytes_copied + bytes_copied2; 229 return 0; 230 } 231 232 int mlx5_ib_read_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer, 233 size_t buflen, size_t *bc) 234 { 235 struct mlx5_ib_qp_base *base = &qp->trans_qp.base; 236 struct ib_umem *umem = base->ubuffer.umem; 237 238 if (buflen < sizeof(struct mlx5_wqe_ctrl_seg)) 239 return -EINVAL; 240 241 if (!umem) 242 return mlx5_ib_read_kernel_wqe_sq(qp, wqe_index, buffer, 243 buflen, bc); 244 245 return mlx5_ib_read_user_wqe_sq(qp, wqe_index, buffer, buflen, bc); 246 } 247 248 static int mlx5_ib_read_user_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index, 249 void *buffer, size_t buflen, size_t *bc) 250 { 251 struct mlx5_ib_qp_base *base = &qp->trans_qp.base; 252 struct ib_umem *umem = base->ubuffer.umem; 253 struct mlx5_ib_wq *wq = &qp->rq; 254 size_t bytes_copied; 255 int ret; 256 257 ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index, 258 wq->offset, wq->wqe_cnt, 259 wq->wqe_shift, buflen, 260 &bytes_copied); 261 262 if (ret) 263 return ret; 264 *bc = bytes_copied; 265 return 0; 266 } 267 268 int mlx5_ib_read_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer, 269 size_t buflen, size_t *bc) 270 { 271 struct mlx5_ib_qp_base *base = &qp->trans_qp.base; 272 struct ib_umem *umem = base->ubuffer.umem; 273 struct mlx5_ib_wq *wq = &qp->rq; 274 size_t wqe_size = 1 << wq->wqe_shift; 275 276 if (buflen < wqe_size) 277 return -EINVAL; 278 279 if (!umem) 280 return -EOPNOTSUPP; 281 282 return mlx5_ib_read_user_wqe_rq(qp, wqe_index, buffer, buflen, bc); 283 } 284 285 static int mlx5_ib_read_user_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index, 286 void *buffer, size_t buflen, size_t *bc) 287 { 288 struct ib_umem *umem = srq->umem; 289 size_t bytes_copied; 290 int ret; 291 292 ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index, 0, 293 srq->msrq.max, srq->msrq.wqe_shift, 294 buflen, &bytes_copied); 295 296 if (ret) 297 return ret; 298 *bc = bytes_copied; 299 return 0; 300 } 301 302 int mlx5_ib_read_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index, void *buffer, 303 size_t buflen, size_t *bc) 304 { 305 struct ib_umem *umem = srq->umem; 306 size_t wqe_size = 1 << srq->msrq.wqe_shift; 307 308 if (buflen < wqe_size) 309 return -EINVAL; 310 311 if (!umem) 312 return -EOPNOTSUPP; 313 314 return mlx5_ib_read_user_wqe_srq(srq, wqe_index, buffer, buflen, bc); 315 } 316 317 static void mlx5_ib_qp_err_syndrome(struct ib_qp *ibqp) 318 { 319 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 320 int outlen = MLX5_ST_SZ_BYTES(query_qp_out); 321 struct mlx5_ib_qp *qp = to_mqp(ibqp); 322 void *pas_ext_union, *err_syn; 323 u32 *outb; 324 int err; 325 326 if (!MLX5_CAP_GEN(dev->mdev, qpc_extension) || 327 !MLX5_CAP_GEN(dev->mdev, qp_error_syndrome)) 328 return; 329 330 outb = kzalloc(outlen, GFP_KERNEL); 331 if (!outb) 332 return; 333 334 err = mlx5_core_qp_query(dev, &qp->trans_qp.base.mqp, outb, outlen, 335 true); 336 if (err) 337 goto out; 338 339 pas_ext_union = 340 MLX5_ADDR_OF(query_qp_out, outb, qp_pas_or_qpc_ext_and_pas); 341 err_syn = MLX5_ADDR_OF(qpc_extension_and_pas_list_in, pas_ext_union, 342 qpc_data_extension.error_syndrome); 343 344 pr_err("%s/%d: QP %d error: %s (0x%x 0x%x 0x%x)\n", 345 ibqp->device->name, ibqp->port, ibqp->qp_num, 346 ib_wc_status_msg( 347 MLX5_GET(cqe_error_syndrome, err_syn, syndrome)), 348 MLX5_GET(cqe_error_syndrome, err_syn, vendor_error_syndrome), 349 MLX5_GET(cqe_error_syndrome, err_syn, hw_syndrome_type), 350 MLX5_GET(cqe_error_syndrome, err_syn, hw_error_syndrome)); 351 out: 352 kfree(outb); 353 } 354 355 static void mlx5_ib_handle_qp_event(struct work_struct *_work) 356 { 357 struct mlx5_ib_qp_event_work *qpe_work = 358 container_of(_work, struct mlx5_ib_qp_event_work, work); 359 struct ib_qp *ibqp = &to_mibqp(qpe_work->qp)->ibqp; 360 struct ib_event event = {}; 361 362 event.device = ibqp->device; 363 event.element.qp = ibqp; 364 switch (qpe_work->type) { 365 case MLX5_EVENT_TYPE_PATH_MIG: 366 event.event = IB_EVENT_PATH_MIG; 367 break; 368 case MLX5_EVENT_TYPE_COMM_EST: 369 event.event = IB_EVENT_COMM_EST; 370 break; 371 case MLX5_EVENT_TYPE_SQ_DRAINED: 372 event.event = IB_EVENT_SQ_DRAINED; 373 break; 374 case MLX5_EVENT_TYPE_SRQ_LAST_WQE: 375 event.event = IB_EVENT_QP_LAST_WQE_REACHED; 376 break; 377 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: 378 event.event = IB_EVENT_QP_FATAL; 379 break; 380 case MLX5_EVENT_TYPE_PATH_MIG_FAILED: 381 event.event = IB_EVENT_PATH_MIG_ERR; 382 break; 383 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: 384 event.event = IB_EVENT_QP_REQ_ERR; 385 break; 386 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: 387 event.event = IB_EVENT_QP_ACCESS_ERR; 388 break; 389 default: 390 pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", 391 qpe_work->type, qpe_work->qp->qpn); 392 goto out; 393 } 394 395 if ((event.event == IB_EVENT_QP_FATAL) || 396 (event.event == IB_EVENT_QP_ACCESS_ERR)) 397 mlx5_ib_qp_err_syndrome(ibqp); 398 399 ibqp->event_handler(&event, ibqp->qp_context); 400 401 out: 402 mlx5_core_res_put(&qpe_work->qp->common); 403 kfree(qpe_work); 404 } 405 406 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type) 407 { 408 struct ib_qp *ibqp = &to_mibqp(qp)->ibqp; 409 struct mlx5_ib_qp_event_work *qpe_work; 410 411 if (type == MLX5_EVENT_TYPE_PATH_MIG) { 412 /* This event is only valid for trans_qps */ 413 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port; 414 } 415 416 if (!ibqp->event_handler) 417 goto out_no_handler; 418 419 qpe_work = kzalloc(sizeof(*qpe_work), GFP_ATOMIC); 420 if (!qpe_work) 421 goto out_no_handler; 422 423 qpe_work->qp = qp; 424 qpe_work->type = type; 425 INIT_WORK(&qpe_work->work, mlx5_ib_handle_qp_event); 426 queue_work(mlx5_ib_qp_event_wq, &qpe_work->work); 427 return; 428 429 out_no_handler: 430 mlx5_core_res_put(&qp->common); 431 } 432 433 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap, 434 int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd) 435 { 436 int wqe_size; 437 int wq_size; 438 439 /* Sanity check RQ size before proceeding */ 440 if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) 441 return -EINVAL; 442 443 if (!has_rq) { 444 qp->rq.max_gs = 0; 445 qp->rq.wqe_cnt = 0; 446 qp->rq.wqe_shift = 0; 447 cap->max_recv_wr = 0; 448 cap->max_recv_sge = 0; 449 } else { 450 int wq_sig = !!(qp->flags_en & MLX5_QP_FLAG_SIGNATURE); 451 452 if (ucmd) { 453 qp->rq.wqe_cnt = ucmd->rq_wqe_count; 454 if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift)) 455 return -EINVAL; 456 qp->rq.wqe_shift = ucmd->rq_wqe_shift; 457 if ((1 << qp->rq.wqe_shift) / 458 sizeof(struct mlx5_wqe_data_seg) < 459 wq_sig) 460 return -EINVAL; 461 qp->rq.max_gs = 462 (1 << qp->rq.wqe_shift) / 463 sizeof(struct mlx5_wqe_data_seg) - 464 wq_sig; 465 qp->rq.max_post = qp->rq.wqe_cnt; 466 } else { 467 wqe_size = 468 wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 469 0; 470 wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg); 471 wqe_size = roundup_pow_of_two(wqe_size); 472 wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size; 473 wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB); 474 qp->rq.wqe_cnt = wq_size / wqe_size; 475 if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) { 476 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n", 477 wqe_size, 478 MLX5_CAP_GEN(dev->mdev, 479 max_wqe_sz_rq)); 480 return -EINVAL; 481 } 482 qp->rq.wqe_shift = ilog2(wqe_size); 483 qp->rq.max_gs = 484 (1 << qp->rq.wqe_shift) / 485 sizeof(struct mlx5_wqe_data_seg) - 486 wq_sig; 487 qp->rq.max_post = qp->rq.wqe_cnt; 488 } 489 } 490 491 return 0; 492 } 493 494 static int sq_overhead(struct ib_qp_init_attr *attr) 495 { 496 int size = 0; 497 498 switch (attr->qp_type) { 499 case IB_QPT_XRC_INI: 500 size += sizeof(struct mlx5_wqe_xrc_seg); 501 fallthrough; 502 case IB_QPT_RC: 503 size += sizeof(struct mlx5_wqe_ctrl_seg) + 504 max(sizeof(struct mlx5_wqe_atomic_seg) + 505 sizeof(struct mlx5_wqe_raddr_seg), 506 sizeof(struct mlx5_wqe_umr_ctrl_seg) + 507 sizeof(struct mlx5_mkey_seg) + 508 MLX5_IB_SQ_UMR_INLINE_THRESHOLD / 509 MLX5_IB_UMR_OCTOWORD); 510 break; 511 512 case IB_QPT_XRC_TGT: 513 return 0; 514 515 case IB_QPT_UC: 516 size += sizeof(struct mlx5_wqe_ctrl_seg) + 517 max(sizeof(struct mlx5_wqe_raddr_seg), 518 sizeof(struct mlx5_wqe_umr_ctrl_seg) + 519 sizeof(struct mlx5_mkey_seg)); 520 break; 521 522 case IB_QPT_UD: 523 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO) 524 size += sizeof(struct mlx5_wqe_eth_pad) + 525 sizeof(struct mlx5_wqe_eth_seg); 526 fallthrough; 527 case IB_QPT_SMI: 528 case MLX5_IB_QPT_HW_GSI: 529 size += sizeof(struct mlx5_wqe_ctrl_seg) + 530 sizeof(struct mlx5_wqe_datagram_seg); 531 break; 532 533 case MLX5_IB_QPT_REG_UMR: 534 size += sizeof(struct mlx5_wqe_ctrl_seg) + 535 sizeof(struct mlx5_wqe_umr_ctrl_seg) + 536 sizeof(struct mlx5_mkey_seg); 537 break; 538 539 default: 540 return -EINVAL; 541 } 542 543 return size; 544 } 545 546 static int calc_send_wqe(struct ib_qp_init_attr *attr) 547 { 548 int inl_size = 0; 549 int size; 550 551 size = sq_overhead(attr); 552 if (size < 0) 553 return size; 554 555 if (attr->cap.max_inline_data) { 556 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) + 557 attr->cap.max_inline_data; 558 } 559 560 size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg); 561 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN && 562 ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE) 563 return MLX5_SIG_WQE_SIZE; 564 else 565 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB); 566 } 567 568 static int get_send_sge(struct ib_qp_init_attr *attr, int wqe_size) 569 { 570 int max_sge; 571 572 if (attr->qp_type == IB_QPT_RC) 573 max_sge = (min_t(int, wqe_size, 512) - 574 sizeof(struct mlx5_wqe_ctrl_seg) - 575 sizeof(struct mlx5_wqe_raddr_seg)) / 576 sizeof(struct mlx5_wqe_data_seg); 577 else if (attr->qp_type == IB_QPT_XRC_INI) 578 max_sge = (min_t(int, wqe_size, 512) - 579 sizeof(struct mlx5_wqe_ctrl_seg) - 580 sizeof(struct mlx5_wqe_xrc_seg) - 581 sizeof(struct mlx5_wqe_raddr_seg)) / 582 sizeof(struct mlx5_wqe_data_seg); 583 else 584 max_sge = (wqe_size - sq_overhead(attr)) / 585 sizeof(struct mlx5_wqe_data_seg); 586 587 return min_t(int, max_sge, wqe_size - sq_overhead(attr) / 588 sizeof(struct mlx5_wqe_data_seg)); 589 } 590 591 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr, 592 struct mlx5_ib_qp *qp) 593 { 594 int wqe_size; 595 int wq_size; 596 597 if (!attr->cap.max_send_wr) 598 return 0; 599 600 wqe_size = calc_send_wqe(attr); 601 mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size); 602 if (wqe_size < 0) 603 return wqe_size; 604 605 if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) { 606 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n", 607 wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)); 608 return -EINVAL; 609 } 610 611 qp->max_inline_data = wqe_size - sq_overhead(attr) - 612 sizeof(struct mlx5_wqe_inline_seg); 613 attr->cap.max_inline_data = qp->max_inline_data; 614 615 wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size); 616 qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB; 617 if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) { 618 mlx5_ib_dbg(dev, "send queue size (%d * %d / %d -> %d) exceeds limits(%d)\n", 619 attr->cap.max_send_wr, wqe_size, MLX5_SEND_WQE_BB, 620 qp->sq.wqe_cnt, 621 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)); 622 return -ENOMEM; 623 } 624 qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB); 625 qp->sq.max_gs = get_send_sge(attr, wqe_size); 626 if (qp->sq.max_gs < attr->cap.max_send_sge) 627 return -ENOMEM; 628 629 attr->cap.max_send_sge = qp->sq.max_gs; 630 qp->sq.max_post = wq_size / wqe_size; 631 attr->cap.max_send_wr = qp->sq.max_post; 632 633 return wq_size; 634 } 635 636 static int set_user_buf_size(struct mlx5_ib_dev *dev, 637 struct mlx5_ib_qp *qp, 638 struct mlx5_ib_create_qp *ucmd, 639 struct mlx5_ib_qp_base *base, 640 struct ib_qp_init_attr *attr) 641 { 642 int desc_sz = 1 << qp->sq.wqe_shift; 643 644 if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) { 645 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n", 646 desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)); 647 return -EINVAL; 648 } 649 650 if (ucmd->sq_wqe_count && !is_power_of_2(ucmd->sq_wqe_count)) { 651 mlx5_ib_warn(dev, "sq_wqe_count %d is not a power of two\n", 652 ucmd->sq_wqe_count); 653 return -EINVAL; 654 } 655 656 qp->sq.wqe_cnt = ucmd->sq_wqe_count; 657 658 if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) { 659 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n", 660 qp->sq.wqe_cnt, 661 1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)); 662 return -EINVAL; 663 } 664 665 if (attr->qp_type == IB_QPT_RAW_PACKET || 666 qp->flags & IB_QP_CREATE_SOURCE_QPN) { 667 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift; 668 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6; 669 } else { 670 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + 671 (qp->sq.wqe_cnt << 6); 672 } 673 674 return 0; 675 } 676 677 static int qp_has_rq(struct ib_qp_init_attr *attr) 678 { 679 if (attr->qp_type == IB_QPT_XRC_INI || 680 attr->qp_type == IB_QPT_XRC_TGT || attr->srq || 681 attr->qp_type == MLX5_IB_QPT_REG_UMR || 682 !attr->cap.max_recv_wr) 683 return 0; 684 685 return 1; 686 } 687 688 enum { 689 /* this is the first blue flame register in the array of bfregs assigned 690 * to a processes. Since we do not use it for blue flame but rather 691 * regular 64 bit doorbells, we do not need a lock for maintaiing 692 * "odd/even" order 693 */ 694 NUM_NON_BLUE_FLAME_BFREGS = 1, 695 }; 696 697 static int max_bfregs(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi) 698 { 699 return get_uars_per_sys_page(dev, bfregi->lib_uar_4k) * 700 bfregi->num_static_sys_pages * MLX5_NON_FP_BFREGS_PER_UAR; 701 } 702 703 static int num_med_bfreg(struct mlx5_ib_dev *dev, 704 struct mlx5_bfreg_info *bfregi) 705 { 706 int n; 707 708 n = max_bfregs(dev, bfregi) - bfregi->num_low_latency_bfregs - 709 NUM_NON_BLUE_FLAME_BFREGS; 710 711 return n >= 0 ? n : 0; 712 } 713 714 static int first_med_bfreg(struct mlx5_ib_dev *dev, 715 struct mlx5_bfreg_info *bfregi) 716 { 717 return num_med_bfreg(dev, bfregi) ? 1 : -ENOMEM; 718 } 719 720 static int first_hi_bfreg(struct mlx5_ib_dev *dev, 721 struct mlx5_bfreg_info *bfregi) 722 { 723 int med; 724 725 med = num_med_bfreg(dev, bfregi); 726 return ++med; 727 } 728 729 static int alloc_high_class_bfreg(struct mlx5_ib_dev *dev, 730 struct mlx5_bfreg_info *bfregi) 731 { 732 int i; 733 734 for (i = first_hi_bfreg(dev, bfregi); i < max_bfregs(dev, bfregi); i++) { 735 if (!bfregi->count[i]) { 736 bfregi->count[i]++; 737 return i; 738 } 739 } 740 741 return -ENOMEM; 742 } 743 744 static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev, 745 struct mlx5_bfreg_info *bfregi) 746 { 747 int minidx = first_med_bfreg(dev, bfregi); 748 int i; 749 750 if (minidx < 0) 751 return minidx; 752 753 for (i = minidx; i < first_hi_bfreg(dev, bfregi); i++) { 754 if (bfregi->count[i] < bfregi->count[minidx]) 755 minidx = i; 756 if (!bfregi->count[minidx]) 757 break; 758 } 759 760 bfregi->count[minidx]++; 761 return minidx; 762 } 763 764 static int alloc_bfreg(struct mlx5_ib_dev *dev, 765 struct mlx5_bfreg_info *bfregi) 766 { 767 int bfregn = -ENOMEM; 768 769 if (bfregi->lib_uar_dyn) 770 return -EINVAL; 771 772 mutex_lock(&bfregi->lock); 773 if (bfregi->ver >= 2) { 774 bfregn = alloc_high_class_bfreg(dev, bfregi); 775 if (bfregn < 0) 776 bfregn = alloc_med_class_bfreg(dev, bfregi); 777 } 778 779 if (bfregn < 0) { 780 BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1); 781 bfregn = 0; 782 bfregi->count[bfregn]++; 783 } 784 mutex_unlock(&bfregi->lock); 785 786 return bfregn; 787 } 788 789 void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn) 790 { 791 mutex_lock(&bfregi->lock); 792 bfregi->count[bfregn]--; 793 mutex_unlock(&bfregi->lock); 794 } 795 796 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state) 797 { 798 switch (state) { 799 case IB_QPS_RESET: return MLX5_QP_STATE_RST; 800 case IB_QPS_INIT: return MLX5_QP_STATE_INIT; 801 case IB_QPS_RTR: return MLX5_QP_STATE_RTR; 802 case IB_QPS_RTS: return MLX5_QP_STATE_RTS; 803 case IB_QPS_SQD: return MLX5_QP_STATE_SQD; 804 case IB_QPS_SQE: return MLX5_QP_STATE_SQER; 805 case IB_QPS_ERR: return MLX5_QP_STATE_ERR; 806 default: return -1; 807 } 808 } 809 810 static int to_mlx5_st(enum ib_qp_type type) 811 { 812 switch (type) { 813 case IB_QPT_RC: return MLX5_QP_ST_RC; 814 case IB_QPT_UC: return MLX5_QP_ST_UC; 815 case IB_QPT_UD: return MLX5_QP_ST_UD; 816 case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR; 817 case IB_QPT_XRC_INI: 818 case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC; 819 case IB_QPT_SMI: return MLX5_QP_ST_QP0; 820 case MLX5_IB_QPT_HW_GSI: return MLX5_QP_ST_QP1; 821 case MLX5_IB_QPT_DCI: return MLX5_QP_ST_DCI; 822 case IB_QPT_RAW_PACKET: return MLX5_QP_ST_RAW_ETHERTYPE; 823 default: return -EINVAL; 824 } 825 } 826 827 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, 828 struct mlx5_ib_cq *recv_cq); 829 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, 830 struct mlx5_ib_cq *recv_cq); 831 832 int bfregn_to_uar_index(struct mlx5_ib_dev *dev, 833 struct mlx5_bfreg_info *bfregi, u32 bfregn, 834 bool dyn_bfreg) 835 { 836 unsigned int bfregs_per_sys_page; 837 u32 index_of_sys_page; 838 u32 offset; 839 840 if (bfregi->lib_uar_dyn) 841 return -EINVAL; 842 843 bfregs_per_sys_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k) * 844 MLX5_NON_FP_BFREGS_PER_UAR; 845 index_of_sys_page = bfregn / bfregs_per_sys_page; 846 847 if (dyn_bfreg) { 848 index_of_sys_page += bfregi->num_static_sys_pages; 849 850 if (index_of_sys_page >= bfregi->num_sys_pages) 851 return -EINVAL; 852 853 if (bfregn > bfregi->num_dyn_bfregs || 854 bfregi->sys_pages[index_of_sys_page] == MLX5_IB_INVALID_UAR_INDEX) { 855 mlx5_ib_dbg(dev, "Invalid dynamic uar index\n"); 856 return -EINVAL; 857 } 858 } 859 860 offset = bfregn % bfregs_per_sys_page / MLX5_NON_FP_BFREGS_PER_UAR; 861 return bfregi->sys_pages[index_of_sys_page] + offset; 862 } 863 864 static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd, 865 struct mlx5_ib_rwq *rwq, struct ib_udata *udata) 866 { 867 struct mlx5_ib_ucontext *context = 868 rdma_udata_to_drv_context( 869 udata, 870 struct mlx5_ib_ucontext, 871 ibucontext); 872 873 if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP) 874 atomic_dec(&dev->delay_drop.rqs_cnt); 875 876 mlx5_ib_db_unmap_user(context, &rwq->db); 877 ib_umem_release(rwq->umem); 878 } 879 880 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd, 881 struct ib_udata *udata, struct mlx5_ib_rwq *rwq, 882 struct mlx5_ib_create_wq *ucmd) 883 { 884 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context( 885 udata, struct mlx5_ib_ucontext, ibucontext); 886 unsigned long page_size = 0; 887 u32 offset = 0; 888 int err; 889 890 if (!ucmd->buf_addr) 891 return -EINVAL; 892 893 rwq->umem = ib_umem_get(&dev->ib_dev, ucmd->buf_addr, rwq->buf_size, 0); 894 if (IS_ERR(rwq->umem)) { 895 mlx5_ib_dbg(dev, "umem_get failed\n"); 896 err = PTR_ERR(rwq->umem); 897 return err; 898 } 899 900 page_size = mlx5_umem_find_best_quantized_pgoff( 901 rwq->umem, wq, log_wq_pg_sz, MLX5_ADAPTER_PAGE_SHIFT, 902 page_offset, 64, &rwq->rq_page_offset); 903 if (!page_size) { 904 mlx5_ib_warn(dev, "bad offset\n"); 905 err = -EINVAL; 906 goto err_umem; 907 } 908 909 rwq->rq_num_pas = ib_umem_num_dma_blocks(rwq->umem, page_size); 910 rwq->page_shift = order_base_2(page_size); 911 rwq->log_page_size = rwq->page_shift - MLX5_ADAPTER_PAGE_SHIFT; 912 rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE); 913 914 mlx5_ib_dbg( 915 dev, 916 "addr 0x%llx, size %zd, npages %zu, page_size %ld, ncont %d, offset %d\n", 917 (unsigned long long)ucmd->buf_addr, rwq->buf_size, 918 ib_umem_num_pages(rwq->umem), page_size, rwq->rq_num_pas, 919 offset); 920 921 err = mlx5_ib_db_map_user(ucontext, ucmd->db_addr, &rwq->db); 922 if (err) { 923 mlx5_ib_dbg(dev, "map failed\n"); 924 goto err_umem; 925 } 926 927 return 0; 928 929 err_umem: 930 ib_umem_release(rwq->umem); 931 return err; 932 } 933 934 static int adjust_bfregn(struct mlx5_ib_dev *dev, 935 struct mlx5_bfreg_info *bfregi, int bfregn) 936 { 937 return bfregn / MLX5_NON_FP_BFREGS_PER_UAR * MLX5_BFREGS_PER_UAR + 938 bfregn % MLX5_NON_FP_BFREGS_PER_UAR; 939 } 940 941 static int _create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, 942 struct mlx5_ib_qp *qp, struct ib_udata *udata, 943 struct ib_qp_init_attr *attr, u32 **in, 944 struct mlx5_ib_create_qp_resp *resp, int *inlen, 945 struct mlx5_ib_qp_base *base, 946 struct mlx5_ib_create_qp *ucmd) 947 { 948 struct mlx5_ib_ucontext *context; 949 struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer; 950 unsigned int page_offset_quantized = 0; 951 unsigned long page_size = 0; 952 int uar_index = 0; 953 int bfregn; 954 int ncont = 0; 955 __be64 *pas; 956 void *qpc; 957 int err; 958 u16 uid; 959 u32 uar_flags; 960 961 context = rdma_udata_to_drv_context(udata, struct mlx5_ib_ucontext, 962 ibucontext); 963 uar_flags = qp->flags_en & 964 (MLX5_QP_FLAG_UAR_PAGE_INDEX | MLX5_QP_FLAG_BFREG_INDEX); 965 switch (uar_flags) { 966 case MLX5_QP_FLAG_UAR_PAGE_INDEX: 967 uar_index = ucmd->bfreg_index; 968 bfregn = MLX5_IB_INVALID_BFREG; 969 break; 970 case MLX5_QP_FLAG_BFREG_INDEX: 971 uar_index = bfregn_to_uar_index(dev, &context->bfregi, 972 ucmd->bfreg_index, true); 973 if (uar_index < 0) 974 return uar_index; 975 bfregn = MLX5_IB_INVALID_BFREG; 976 break; 977 case 0: 978 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL) 979 return -EINVAL; 980 bfregn = alloc_bfreg(dev, &context->bfregi); 981 if (bfregn < 0) 982 return bfregn; 983 break; 984 default: 985 return -EINVAL; 986 } 987 988 mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index); 989 if (bfregn != MLX5_IB_INVALID_BFREG) 990 uar_index = bfregn_to_uar_index(dev, &context->bfregi, bfregn, 991 false); 992 993 qp->rq.offset = 0; 994 qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB); 995 qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; 996 997 err = set_user_buf_size(dev, qp, ucmd, base, attr); 998 if (err) 999 goto err_bfreg; 1000 1001 if (ucmd->buf_addr && ubuffer->buf_size) { 1002 ubuffer->buf_addr = ucmd->buf_addr; 1003 ubuffer->umem = ib_umem_get(&dev->ib_dev, ubuffer->buf_addr, 1004 ubuffer->buf_size, 0); 1005 if (IS_ERR(ubuffer->umem)) { 1006 err = PTR_ERR(ubuffer->umem); 1007 goto err_bfreg; 1008 } 1009 page_size = mlx5_umem_find_best_quantized_pgoff( 1010 ubuffer->umem, qpc, log_page_size, 1011 MLX5_ADAPTER_PAGE_SHIFT, page_offset, 64, 1012 &page_offset_quantized); 1013 if (!page_size) { 1014 err = -EINVAL; 1015 goto err_umem; 1016 } 1017 ncont = ib_umem_num_dma_blocks(ubuffer->umem, page_size); 1018 } else { 1019 ubuffer->umem = NULL; 1020 } 1021 1022 *inlen = MLX5_ST_SZ_BYTES(create_qp_in) + 1023 MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont; 1024 *in = kvzalloc(*inlen, GFP_KERNEL); 1025 if (!*in) { 1026 err = -ENOMEM; 1027 goto err_umem; 1028 } 1029 1030 uid = (attr->qp_type != IB_QPT_XRC_INI) ? to_mpd(pd)->uid : 0; 1031 MLX5_SET(create_qp_in, *in, uid, uid); 1032 qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc); 1033 pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas); 1034 if (ubuffer->umem) { 1035 mlx5_ib_populate_pas(ubuffer->umem, page_size, pas, 0); 1036 MLX5_SET(qpc, qpc, log_page_size, 1037 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT); 1038 MLX5_SET(qpc, qpc, page_offset, page_offset_quantized); 1039 } 1040 MLX5_SET(qpc, qpc, uar_page, uar_index); 1041 if (bfregn != MLX5_IB_INVALID_BFREG) 1042 resp->bfreg_index = adjust_bfregn(dev, &context->bfregi, bfregn); 1043 else 1044 resp->bfreg_index = MLX5_IB_INVALID_BFREG; 1045 qp->bfregn = bfregn; 1046 1047 err = mlx5_ib_db_map_user(context, ucmd->db_addr, &qp->db); 1048 if (err) { 1049 mlx5_ib_dbg(dev, "map failed\n"); 1050 goto err_free; 1051 } 1052 1053 return 0; 1054 1055 err_free: 1056 kvfree(*in); 1057 1058 err_umem: 1059 ib_umem_release(ubuffer->umem); 1060 1061 err_bfreg: 1062 if (bfregn != MLX5_IB_INVALID_BFREG) 1063 mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn); 1064 return err; 1065 } 1066 1067 static void destroy_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 1068 struct mlx5_ib_qp_base *base, struct ib_udata *udata) 1069 { 1070 struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context( 1071 udata, struct mlx5_ib_ucontext, ibucontext); 1072 1073 if (udata) { 1074 /* User QP */ 1075 mlx5_ib_db_unmap_user(context, &qp->db); 1076 ib_umem_release(base->ubuffer.umem); 1077 1078 /* 1079 * Free only the BFREGs which are handled by the kernel. 1080 * BFREGs of UARs allocated dynamically are handled by user. 1081 */ 1082 if (qp->bfregn != MLX5_IB_INVALID_BFREG) 1083 mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn); 1084 return; 1085 } 1086 1087 /* Kernel QP */ 1088 kvfree(qp->sq.wqe_head); 1089 kvfree(qp->sq.w_list); 1090 kvfree(qp->sq.wrid); 1091 kvfree(qp->sq.wr_data); 1092 kvfree(qp->rq.wrid); 1093 if (qp->db.db) 1094 mlx5_db_free(dev->mdev, &qp->db); 1095 if (qp->buf.frags) 1096 mlx5_frag_buf_free(dev->mdev, &qp->buf); 1097 } 1098 1099 static int _create_kernel_qp(struct mlx5_ib_dev *dev, 1100 struct ib_qp_init_attr *init_attr, 1101 struct mlx5_ib_qp *qp, u32 **in, int *inlen, 1102 struct mlx5_ib_qp_base *base) 1103 { 1104 int uar_index; 1105 void *qpc; 1106 int err; 1107 1108 if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR) 1109 qp->bf.bfreg = &dev->fp_bfreg; 1110 else if (qp->flags & MLX5_IB_QP_CREATE_WC_TEST) 1111 qp->bf.bfreg = &dev->wc_bfreg; 1112 else 1113 qp->bf.bfreg = &dev->bfreg; 1114 1115 /* We need to divide by two since each register is comprised of 1116 * two buffers of identical size, namely odd and even 1117 */ 1118 qp->bf.buf_size = (1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size)) / 2; 1119 uar_index = qp->bf.bfreg->index; 1120 1121 err = calc_sq_size(dev, init_attr, qp); 1122 if (err < 0) { 1123 mlx5_ib_dbg(dev, "err %d\n", err); 1124 return err; 1125 } 1126 1127 qp->rq.offset = 0; 1128 qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; 1129 base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift); 1130 1131 err = mlx5_frag_buf_alloc_node(dev->mdev, base->ubuffer.buf_size, 1132 &qp->buf, dev->mdev->priv.numa_node); 1133 if (err) { 1134 mlx5_ib_dbg(dev, "err %d\n", err); 1135 return err; 1136 } 1137 1138 if (qp->rq.wqe_cnt) 1139 mlx5_init_fbc(qp->buf.frags, qp->rq.wqe_shift, 1140 ilog2(qp->rq.wqe_cnt), &qp->rq.fbc); 1141 1142 if (qp->sq.wqe_cnt) { 1143 int sq_strides_offset = (qp->sq.offset & (PAGE_SIZE - 1)) / 1144 MLX5_SEND_WQE_BB; 1145 mlx5_init_fbc_offset(qp->buf.frags + 1146 (qp->sq.offset / PAGE_SIZE), 1147 ilog2(MLX5_SEND_WQE_BB), 1148 ilog2(qp->sq.wqe_cnt), 1149 sq_strides_offset, &qp->sq.fbc); 1150 1151 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0); 1152 } 1153 1154 *inlen = MLX5_ST_SZ_BYTES(create_qp_in) + 1155 MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages; 1156 *in = kvzalloc(*inlen, GFP_KERNEL); 1157 if (!*in) { 1158 err = -ENOMEM; 1159 goto err_buf; 1160 } 1161 1162 qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc); 1163 MLX5_SET(qpc, qpc, uar_page, uar_index); 1164 MLX5_SET(qpc, qpc, ts_format, mlx5_get_qp_default_ts(dev->mdev)); 1165 MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT); 1166 1167 /* Set "fast registration enabled" for all kernel QPs */ 1168 MLX5_SET(qpc, qpc, fre, 1); 1169 MLX5_SET(qpc, qpc, rlky, 1); 1170 1171 if (qp->flags & MLX5_IB_QP_CREATE_SQPN_QP1) 1172 MLX5_SET(qpc, qpc, deth_sqpn, 1); 1173 1174 mlx5_fill_page_frag_array(&qp->buf, 1175 (__be64 *)MLX5_ADDR_OF(create_qp_in, 1176 *in, pas)); 1177 1178 err = mlx5_db_alloc(dev->mdev, &qp->db); 1179 if (err) { 1180 mlx5_ib_dbg(dev, "err %d\n", err); 1181 goto err_free; 1182 } 1183 1184 qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt, 1185 sizeof(*qp->sq.wrid), GFP_KERNEL); 1186 qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt, 1187 sizeof(*qp->sq.wr_data), GFP_KERNEL); 1188 qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt, 1189 sizeof(*qp->rq.wrid), GFP_KERNEL); 1190 qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt, 1191 sizeof(*qp->sq.w_list), GFP_KERNEL); 1192 qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt, 1193 sizeof(*qp->sq.wqe_head), GFP_KERNEL); 1194 1195 if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid || 1196 !qp->sq.w_list || !qp->sq.wqe_head) { 1197 err = -ENOMEM; 1198 goto err_wrid; 1199 } 1200 1201 return 0; 1202 1203 err_wrid: 1204 kvfree(qp->sq.wqe_head); 1205 kvfree(qp->sq.w_list); 1206 kvfree(qp->sq.wrid); 1207 kvfree(qp->sq.wr_data); 1208 kvfree(qp->rq.wrid); 1209 mlx5_db_free(dev->mdev, &qp->db); 1210 1211 err_free: 1212 kvfree(*in); 1213 1214 err_buf: 1215 mlx5_frag_buf_free(dev->mdev, &qp->buf); 1216 return err; 1217 } 1218 1219 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr) 1220 { 1221 if (attr->srq || (qp->type == IB_QPT_XRC_TGT) || 1222 (qp->type == MLX5_IB_QPT_DCI) || (qp->type == IB_QPT_XRC_INI)) 1223 return MLX5_SRQ_RQ; 1224 else if (!qp->has_rq) 1225 return MLX5_ZERO_LEN_RQ; 1226 1227 return MLX5_NON_ZERO_RQ; 1228 } 1229 1230 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev, 1231 struct mlx5_ib_qp *qp, 1232 struct mlx5_ib_sq *sq, u32 tdn, 1233 struct ib_pd *pd) 1234 { 1235 u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {}; 1236 void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx); 1237 1238 MLX5_SET(create_tis_in, in, uid, to_mpd(pd)->uid); 1239 MLX5_SET(tisc, tisc, transport_domain, tdn); 1240 if (!mlx5_ib_lag_should_assign_affinity(dev) && 1241 mlx5_lag_is_lacp_owner(dev->mdev)) 1242 MLX5_SET(tisc, tisc, strict_lag_tx_port_affinity, 1); 1243 if (qp->flags & IB_QP_CREATE_SOURCE_QPN) 1244 MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn); 1245 1246 return mlx5_core_create_tis(dev->mdev, in, &sq->tisn); 1247 } 1248 1249 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev, 1250 struct mlx5_ib_sq *sq, struct ib_pd *pd) 1251 { 1252 mlx5_cmd_destroy_tis(dev->mdev, sq->tisn, to_mpd(pd)->uid); 1253 } 1254 1255 static void destroy_flow_rule_vport_sq(struct mlx5_ib_sq *sq) 1256 { 1257 if (sq->flow_rule) 1258 mlx5_del_flow_rules(sq->flow_rule); 1259 sq->flow_rule = NULL; 1260 } 1261 1262 static bool fr_supported(int ts_cap) 1263 { 1264 return ts_cap == MLX5_TIMESTAMP_FORMAT_CAP_FREE_RUNNING || 1265 ts_cap == MLX5_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME; 1266 } 1267 1268 static int get_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, 1269 bool fr_sup, bool rt_sup) 1270 { 1271 if (cq->private_flags & MLX5_IB_CQ_PR_FLAGS_REAL_TIME_TS) { 1272 if (!rt_sup) { 1273 mlx5_ib_dbg(dev, 1274 "Real time TS format is not supported\n"); 1275 return -EOPNOTSUPP; 1276 } 1277 return MLX5_TIMESTAMP_FORMAT_REAL_TIME; 1278 } 1279 if (cq->create_flags & IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION) { 1280 if (!fr_sup) { 1281 mlx5_ib_dbg(dev, 1282 "Free running TS format is not supported\n"); 1283 return -EOPNOTSUPP; 1284 } 1285 return MLX5_TIMESTAMP_FORMAT_FREE_RUNNING; 1286 } 1287 return fr_sup ? MLX5_TIMESTAMP_FORMAT_FREE_RUNNING : 1288 MLX5_TIMESTAMP_FORMAT_DEFAULT; 1289 } 1290 1291 static int get_rq_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *recv_cq) 1292 { 1293 u8 ts_cap = MLX5_CAP_GEN(dev->mdev, rq_ts_format); 1294 1295 return get_ts_format(dev, recv_cq, fr_supported(ts_cap), 1296 rt_supported(ts_cap)); 1297 } 1298 1299 static int get_sq_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *send_cq) 1300 { 1301 u8 ts_cap = MLX5_CAP_GEN(dev->mdev, sq_ts_format); 1302 1303 return get_ts_format(dev, send_cq, fr_supported(ts_cap), 1304 rt_supported(ts_cap)); 1305 } 1306 1307 static int get_qp_ts_format(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *send_cq, 1308 struct mlx5_ib_cq *recv_cq) 1309 { 1310 u8 ts_cap = MLX5_CAP_ROCE(dev->mdev, qp_ts_format); 1311 bool fr_sup = fr_supported(ts_cap); 1312 bool rt_sup = rt_supported(ts_cap); 1313 u8 default_ts = fr_sup ? MLX5_TIMESTAMP_FORMAT_FREE_RUNNING : 1314 MLX5_TIMESTAMP_FORMAT_DEFAULT; 1315 int send_ts_format = 1316 send_cq ? get_ts_format(dev, send_cq, fr_sup, rt_sup) : 1317 default_ts; 1318 int recv_ts_format = 1319 recv_cq ? get_ts_format(dev, recv_cq, fr_sup, rt_sup) : 1320 default_ts; 1321 1322 if (send_ts_format < 0 || recv_ts_format < 0) 1323 return -EOPNOTSUPP; 1324 1325 if (send_ts_format != MLX5_TIMESTAMP_FORMAT_DEFAULT && 1326 recv_ts_format != MLX5_TIMESTAMP_FORMAT_DEFAULT && 1327 send_ts_format != recv_ts_format) { 1328 mlx5_ib_dbg( 1329 dev, 1330 "The send ts_format does not match the receive ts_format\n"); 1331 return -EOPNOTSUPP; 1332 } 1333 1334 return send_ts_format == default_ts ? recv_ts_format : send_ts_format; 1335 } 1336 1337 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev, 1338 struct ib_udata *udata, 1339 struct mlx5_ib_sq *sq, void *qpin, 1340 struct ib_pd *pd, struct mlx5_ib_cq *cq) 1341 { 1342 struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer; 1343 __be64 *pas; 1344 void *in; 1345 void *sqc; 1346 void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc); 1347 void *wq; 1348 int inlen; 1349 int err; 1350 unsigned int page_offset_quantized; 1351 unsigned long page_size; 1352 int ts_format; 1353 1354 ts_format = get_sq_ts_format(dev, cq); 1355 if (ts_format < 0) 1356 return ts_format; 1357 1358 sq->ubuffer.umem = ib_umem_get(&dev->ib_dev, ubuffer->buf_addr, 1359 ubuffer->buf_size, 0); 1360 if (IS_ERR(sq->ubuffer.umem)) 1361 return PTR_ERR(sq->ubuffer.umem); 1362 page_size = mlx5_umem_find_best_quantized_pgoff( 1363 ubuffer->umem, wq, log_wq_pg_sz, MLX5_ADAPTER_PAGE_SHIFT, 1364 page_offset, 64, &page_offset_quantized); 1365 if (!page_size) { 1366 err = -EINVAL; 1367 goto err_umem; 1368 } 1369 1370 inlen = MLX5_ST_SZ_BYTES(create_sq_in) + 1371 sizeof(u64) * 1372 ib_umem_num_dma_blocks(sq->ubuffer.umem, page_size); 1373 in = kvzalloc(inlen, GFP_KERNEL); 1374 if (!in) { 1375 err = -ENOMEM; 1376 goto err_umem; 1377 } 1378 1379 MLX5_SET(create_sq_in, in, uid, to_mpd(pd)->uid); 1380 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx); 1381 MLX5_SET(sqc, sqc, flush_in_error_en, 1); 1382 if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe)) 1383 MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1); 1384 MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST); 1385 MLX5_SET(sqc, sqc, ts_format, ts_format); 1386 MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index)); 1387 MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd)); 1388 MLX5_SET(sqc, sqc, tis_lst_sz, 1); 1389 MLX5_SET(sqc, sqc, tis_num_0, sq->tisn); 1390 if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && 1391 MLX5_CAP_ETH(dev->mdev, swp)) 1392 MLX5_SET(sqc, sqc, allow_swp, 1); 1393 1394 wq = MLX5_ADDR_OF(sqc, sqc, wq); 1395 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC); 1396 MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd)); 1397 MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page)); 1398 MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr)); 1399 MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB)); 1400 MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size)); 1401 MLX5_SET(wq, wq, log_wq_pg_sz, 1402 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT); 1403 MLX5_SET(wq, wq, page_offset, page_offset_quantized); 1404 1405 pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas); 1406 mlx5_ib_populate_pas(sq->ubuffer.umem, page_size, pas, 0); 1407 1408 err = mlx5_core_create_sq_tracked(dev, in, inlen, &sq->base.mqp); 1409 1410 kvfree(in); 1411 1412 if (err) 1413 goto err_umem; 1414 1415 return 0; 1416 1417 err_umem: 1418 ib_umem_release(sq->ubuffer.umem); 1419 sq->ubuffer.umem = NULL; 1420 1421 return err; 1422 } 1423 1424 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev, 1425 struct mlx5_ib_sq *sq) 1426 { 1427 destroy_flow_rule_vport_sq(sq); 1428 mlx5_core_destroy_sq_tracked(dev, &sq->base.mqp); 1429 ib_umem_release(sq->ubuffer.umem); 1430 } 1431 1432 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev, 1433 struct mlx5_ib_rq *rq, void *qpin, 1434 struct ib_pd *pd, struct mlx5_ib_cq *cq) 1435 { 1436 struct mlx5_ib_qp *mqp = rq->base.container_mibqp; 1437 __be64 *pas; 1438 void *in; 1439 void *rqc; 1440 void *wq; 1441 void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc); 1442 struct ib_umem *umem = rq->base.ubuffer.umem; 1443 unsigned int page_offset_quantized; 1444 unsigned long page_size = 0; 1445 int ts_format; 1446 size_t inlen; 1447 int err; 1448 1449 ts_format = get_rq_ts_format(dev, cq); 1450 if (ts_format < 0) 1451 return ts_format; 1452 1453 page_size = mlx5_umem_find_best_quantized_pgoff(umem, wq, log_wq_pg_sz, 1454 MLX5_ADAPTER_PAGE_SHIFT, 1455 page_offset, 64, 1456 &page_offset_quantized); 1457 if (!page_size) 1458 return -EINVAL; 1459 1460 inlen = MLX5_ST_SZ_BYTES(create_rq_in) + 1461 sizeof(u64) * ib_umem_num_dma_blocks(umem, page_size); 1462 in = kvzalloc(inlen, GFP_KERNEL); 1463 if (!in) 1464 return -ENOMEM; 1465 1466 MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid); 1467 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx); 1468 if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING)) 1469 MLX5_SET(rqc, rqc, vsd, 1); 1470 MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE); 1471 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST); 1472 MLX5_SET(rqc, rqc, ts_format, ts_format); 1473 MLX5_SET(rqc, rqc, flush_in_error_en, 1); 1474 MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index)); 1475 MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv)); 1476 1477 if (mqp->flags & IB_QP_CREATE_SCATTER_FCS) 1478 MLX5_SET(rqc, rqc, scatter_fcs, 1); 1479 1480 wq = MLX5_ADDR_OF(rqc, rqc, wq); 1481 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC); 1482 if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING) 1483 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN); 1484 MLX5_SET(wq, wq, page_offset, page_offset_quantized); 1485 MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd)); 1486 MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr)); 1487 MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4); 1488 MLX5_SET(wq, wq, log_wq_pg_sz, 1489 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT); 1490 MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size)); 1491 1492 pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas); 1493 mlx5_ib_populate_pas(umem, page_size, pas, 0); 1494 1495 err = mlx5_core_create_rq_tracked(dev, in, inlen, &rq->base.mqp); 1496 1497 kvfree(in); 1498 1499 return err; 1500 } 1501 1502 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev, 1503 struct mlx5_ib_rq *rq) 1504 { 1505 mlx5_core_destroy_rq_tracked(dev, &rq->base.mqp); 1506 } 1507 1508 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev, 1509 struct mlx5_ib_rq *rq, 1510 u32 qp_flags_en, 1511 struct ib_pd *pd) 1512 { 1513 if (qp_flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC | 1514 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)) 1515 mlx5_ib_disable_lb(dev, false, true); 1516 mlx5_cmd_destroy_tir(dev->mdev, rq->tirn, to_mpd(pd)->uid); 1517 } 1518 1519 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev, 1520 struct mlx5_ib_rq *rq, u32 tdn, 1521 u32 *qp_flags_en, struct ib_pd *pd, 1522 u32 *out) 1523 { 1524 u8 lb_flag = 0; 1525 u32 *in; 1526 void *tirc; 1527 int inlen; 1528 int err; 1529 1530 inlen = MLX5_ST_SZ_BYTES(create_tir_in); 1531 in = kvzalloc(inlen, GFP_KERNEL); 1532 if (!in) 1533 return -ENOMEM; 1534 1535 MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid); 1536 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx); 1537 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT); 1538 MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn); 1539 MLX5_SET(tirc, tirc, transport_domain, tdn); 1540 if (*qp_flags_en & MLX5_QP_FLAG_TUNNEL_OFFLOADS) 1541 MLX5_SET(tirc, tirc, tunneled_offload_en, 1); 1542 1543 if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC) 1544 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST; 1545 1546 if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) 1547 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST; 1548 1549 if (dev->is_rep) { 1550 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST; 1551 *qp_flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC; 1552 } 1553 1554 MLX5_SET(tirc, tirc, self_lb_block, lb_flag); 1555 MLX5_SET(create_tir_in, in, opcode, MLX5_CMD_OP_CREATE_TIR); 1556 err = mlx5_cmd_exec_inout(dev->mdev, create_tir, in, out); 1557 rq->tirn = MLX5_GET(create_tir_out, out, tirn); 1558 if (!err && MLX5_GET(tirc, tirc, self_lb_block)) { 1559 err = mlx5_ib_enable_lb(dev, false, true); 1560 1561 if (err) 1562 destroy_raw_packet_qp_tir(dev, rq, 0, pd); 1563 } 1564 kvfree(in); 1565 1566 return err; 1567 } 1568 1569 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 1570 u32 *in, size_t inlen, struct ib_pd *pd, 1571 struct ib_udata *udata, 1572 struct mlx5_ib_create_qp_resp *resp, 1573 struct ib_qp_init_attr *init_attr) 1574 { 1575 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp; 1576 struct mlx5_ib_sq *sq = &raw_packet_qp->sq; 1577 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 1578 struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context( 1579 udata, struct mlx5_ib_ucontext, ibucontext); 1580 int err; 1581 u32 tdn = mucontext->tdn; 1582 u16 uid = to_mpd(pd)->uid; 1583 u32 out[MLX5_ST_SZ_DW(create_tir_out)] = {}; 1584 1585 if (!qp->sq.wqe_cnt && !qp->rq.wqe_cnt) 1586 return -EINVAL; 1587 if (qp->sq.wqe_cnt) { 1588 err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd); 1589 if (err) 1590 return err; 1591 1592 err = create_raw_packet_qp_sq(dev, udata, sq, in, pd, 1593 to_mcq(init_attr->send_cq)); 1594 if (err) 1595 goto err_destroy_tis; 1596 1597 if (uid) { 1598 resp->tisn = sq->tisn; 1599 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN; 1600 resp->sqn = sq->base.mqp.qpn; 1601 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN; 1602 } 1603 1604 sq->base.container_mibqp = qp; 1605 sq->base.mqp.event = mlx5_ib_qp_event; 1606 } 1607 1608 if (qp->rq.wqe_cnt) { 1609 rq->base.container_mibqp = qp; 1610 1611 if (qp->flags & IB_QP_CREATE_CVLAN_STRIPPING) 1612 rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING; 1613 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) 1614 rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING; 1615 err = create_raw_packet_qp_rq(dev, rq, in, pd, 1616 to_mcq(init_attr->recv_cq)); 1617 if (err) 1618 goto err_destroy_sq; 1619 1620 err = create_raw_packet_qp_tir(dev, rq, tdn, &qp->flags_en, pd, 1621 out); 1622 if (err) 1623 goto err_destroy_rq; 1624 1625 if (uid) { 1626 resp->rqn = rq->base.mqp.qpn; 1627 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN; 1628 resp->tirn = rq->tirn; 1629 resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN; 1630 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) || 1631 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2)) { 1632 resp->tir_icm_addr = MLX5_GET( 1633 create_tir_out, out, icm_address_31_0); 1634 resp->tir_icm_addr |= 1635 (u64)MLX5_GET(create_tir_out, out, 1636 icm_address_39_32) 1637 << 32; 1638 resp->tir_icm_addr |= 1639 (u64)MLX5_GET(create_tir_out, out, 1640 icm_address_63_40) 1641 << 40; 1642 resp->comp_mask |= 1643 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR; 1644 } 1645 } 1646 } 1647 1648 qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn : 1649 rq->base.mqp.qpn; 1650 return 0; 1651 1652 err_destroy_rq: 1653 destroy_raw_packet_qp_rq(dev, rq); 1654 err_destroy_sq: 1655 if (!qp->sq.wqe_cnt) 1656 return err; 1657 destroy_raw_packet_qp_sq(dev, sq); 1658 err_destroy_tis: 1659 destroy_raw_packet_qp_tis(dev, sq, pd); 1660 1661 return err; 1662 } 1663 1664 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev, 1665 struct mlx5_ib_qp *qp) 1666 { 1667 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp; 1668 struct mlx5_ib_sq *sq = &raw_packet_qp->sq; 1669 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 1670 1671 if (qp->rq.wqe_cnt) { 1672 destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, qp->ibqp.pd); 1673 destroy_raw_packet_qp_rq(dev, rq); 1674 } 1675 1676 if (qp->sq.wqe_cnt) { 1677 destroy_raw_packet_qp_sq(dev, sq); 1678 destroy_raw_packet_qp_tis(dev, sq, qp->ibqp.pd); 1679 } 1680 } 1681 1682 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp, 1683 struct mlx5_ib_raw_packet_qp *raw_packet_qp) 1684 { 1685 struct mlx5_ib_sq *sq = &raw_packet_qp->sq; 1686 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 1687 1688 sq->sq = &qp->sq; 1689 rq->rq = &qp->rq; 1690 sq->doorbell = &qp->db; 1691 rq->doorbell = &qp->db; 1692 } 1693 1694 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp) 1695 { 1696 if (qp->flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC | 1697 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)) 1698 mlx5_ib_disable_lb(dev, false, true); 1699 mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn, 1700 to_mpd(qp->ibqp.pd)->uid); 1701 } 1702 1703 struct mlx5_create_qp_params { 1704 struct ib_udata *udata; 1705 size_t inlen; 1706 size_t outlen; 1707 size_t ucmd_size; 1708 void *ucmd; 1709 u8 is_rss_raw : 1; 1710 struct ib_qp_init_attr *attr; 1711 u32 uidx; 1712 struct mlx5_ib_create_qp_resp resp; 1713 }; 1714 1715 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct ib_pd *pd, 1716 struct mlx5_ib_qp *qp, 1717 struct mlx5_create_qp_params *params) 1718 { 1719 struct ib_qp_init_attr *init_attr = params->attr; 1720 struct mlx5_ib_create_qp_rss *ucmd = params->ucmd; 1721 struct ib_udata *udata = params->udata; 1722 struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context( 1723 udata, struct mlx5_ib_ucontext, ibucontext); 1724 int inlen; 1725 int outlen; 1726 int err; 1727 u32 *in; 1728 u32 *out; 1729 void *tirc; 1730 void *hfso; 1731 u32 selected_fields = 0; 1732 u32 outer_l4; 1733 u32 tdn = mucontext->tdn; 1734 u8 lb_flag = 0; 1735 1736 if (ucmd->comp_mask) { 1737 mlx5_ib_dbg(dev, "invalid comp mask\n"); 1738 return -EOPNOTSUPP; 1739 } 1740 1741 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_INNER && 1742 !(ucmd->flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) { 1743 mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n"); 1744 return -EOPNOTSUPP; 1745 } 1746 1747 if (dev->is_rep) 1748 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC; 1749 1750 if (qp->flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC) 1751 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST; 1752 1753 if (qp->flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) 1754 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST; 1755 1756 inlen = MLX5_ST_SZ_BYTES(create_tir_in); 1757 outlen = MLX5_ST_SZ_BYTES(create_tir_out); 1758 in = kvzalloc(inlen + outlen, GFP_KERNEL); 1759 if (!in) 1760 return -ENOMEM; 1761 1762 out = in + MLX5_ST_SZ_DW(create_tir_in); 1763 MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid); 1764 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx); 1765 MLX5_SET(tirc, tirc, disp_type, 1766 MLX5_TIRC_DISP_TYPE_INDIRECT); 1767 MLX5_SET(tirc, tirc, indirect_table, 1768 init_attr->rwq_ind_tbl->ind_tbl_num); 1769 MLX5_SET(tirc, tirc, transport_domain, tdn); 1770 1771 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer); 1772 1773 if (ucmd->flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS) 1774 MLX5_SET(tirc, tirc, tunneled_offload_en, 1); 1775 1776 MLX5_SET(tirc, tirc, self_lb_block, lb_flag); 1777 1778 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_INNER) 1779 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner); 1780 else 1781 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer); 1782 1783 switch (ucmd->rx_hash_function) { 1784 case MLX5_RX_HASH_FUNC_TOEPLITZ: 1785 { 1786 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key); 1787 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key); 1788 1789 if (len != ucmd->rx_key_len) { 1790 err = -EINVAL; 1791 goto err; 1792 } 1793 1794 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ); 1795 memcpy(rss_key, ucmd->rx_hash_key, len); 1796 break; 1797 } 1798 default: 1799 err = -EOPNOTSUPP; 1800 goto err; 1801 } 1802 1803 if (!ucmd->rx_hash_fields_mask) { 1804 /* special case when this TIR serves as steering entry without hashing */ 1805 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size) 1806 goto create_tir; 1807 err = -EINVAL; 1808 goto err; 1809 } 1810 1811 if (((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) || 1812 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) && 1813 ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) || 1814 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) { 1815 err = -EINVAL; 1816 goto err; 1817 } 1818 1819 /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */ 1820 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) || 1821 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) 1822 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type, 1823 MLX5_L3_PROT_TYPE_IPV4); 1824 else if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) || 1825 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6)) 1826 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type, 1827 MLX5_L3_PROT_TYPE_IPV6); 1828 1829 outer_l4 = ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) || 1830 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) 1831 << 0 | 1832 ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) || 1833 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) 1834 << 1 | 1835 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2; 1836 1837 /* Check that only one l4 protocol is set */ 1838 if (outer_l4 & (outer_l4 - 1)) { 1839 err = -EINVAL; 1840 goto err; 1841 } 1842 1843 /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */ 1844 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) || 1845 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) 1846 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type, 1847 MLX5_L4_PROT_TYPE_TCP); 1848 else if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) || 1849 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) 1850 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type, 1851 MLX5_L4_PROT_TYPE_UDP); 1852 1853 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) || 1854 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6)) 1855 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP; 1856 1857 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) || 1858 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6)) 1859 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP; 1860 1861 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) || 1862 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP)) 1863 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT; 1864 1865 if ((ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) || 1866 (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) 1867 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT; 1868 1869 if (ucmd->rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) 1870 selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI; 1871 1872 MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields); 1873 1874 create_tir: 1875 MLX5_SET(create_tir_in, in, opcode, MLX5_CMD_OP_CREATE_TIR); 1876 err = mlx5_cmd_exec_inout(dev->mdev, create_tir, in, out); 1877 1878 qp->rss_qp.tirn = MLX5_GET(create_tir_out, out, tirn); 1879 if (!err && MLX5_GET(tirc, tirc, self_lb_block)) { 1880 err = mlx5_ib_enable_lb(dev, false, true); 1881 1882 if (err) 1883 mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn, 1884 to_mpd(pd)->uid); 1885 } 1886 1887 if (err) 1888 goto err; 1889 1890 if (mucontext->devx_uid) { 1891 params->resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN; 1892 params->resp.tirn = qp->rss_qp.tirn; 1893 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner) || 1894 MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner_v2)) { 1895 params->resp.tir_icm_addr = 1896 MLX5_GET(create_tir_out, out, icm_address_31_0); 1897 params->resp.tir_icm_addr |= 1898 (u64)MLX5_GET(create_tir_out, out, 1899 icm_address_39_32) 1900 << 32; 1901 params->resp.tir_icm_addr |= 1902 (u64)MLX5_GET(create_tir_out, out, 1903 icm_address_63_40) 1904 << 40; 1905 params->resp.comp_mask |= 1906 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR; 1907 } 1908 } 1909 1910 kvfree(in); 1911 /* qpn is reserved for that QP */ 1912 qp->trans_qp.base.mqp.qpn = 0; 1913 qp->is_rss = true; 1914 return 0; 1915 1916 err: 1917 kvfree(in); 1918 return err; 1919 } 1920 1921 static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev, 1922 struct mlx5_ib_qp *qp, 1923 struct ib_qp_init_attr *init_attr, 1924 void *qpc) 1925 { 1926 int scqe_sz; 1927 bool allow_scat_cqe = false; 1928 1929 allow_scat_cqe = qp->flags_en & MLX5_QP_FLAG_ALLOW_SCATTER_CQE; 1930 1931 if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) 1932 return; 1933 1934 scqe_sz = mlx5_ib_get_cqe_size(init_attr->send_cq); 1935 if (scqe_sz == 128) { 1936 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE); 1937 return; 1938 } 1939 1940 if (init_attr->qp_type != MLX5_IB_QPT_DCI || 1941 MLX5_CAP_GEN(dev->mdev, dc_req_scat_data_cqe)) 1942 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE); 1943 } 1944 1945 static int atomic_size_to_mode(int size_mask) 1946 { 1947 /* driver does not support atomic_size > 256B 1948 * and does not know how to translate bigger sizes 1949 */ 1950 int supported_size_mask = size_mask & 0x1ff; 1951 int log_max_size; 1952 1953 if (!supported_size_mask) 1954 return -EOPNOTSUPP; 1955 1956 log_max_size = __fls(supported_size_mask); 1957 1958 if (log_max_size > 3) 1959 return log_max_size; 1960 1961 return MLX5_ATOMIC_MODE_8B; 1962 } 1963 1964 static int get_atomic_mode(struct mlx5_ib_dev *dev, 1965 enum ib_qp_type qp_type) 1966 { 1967 u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations); 1968 u8 atomic = MLX5_CAP_GEN(dev->mdev, atomic); 1969 int atomic_mode = -EOPNOTSUPP; 1970 int atomic_size_mask; 1971 1972 if (!atomic) 1973 return -EOPNOTSUPP; 1974 1975 if (qp_type == MLX5_IB_QPT_DCT) 1976 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc); 1977 else 1978 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp); 1979 1980 if ((atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_CMP_SWAP) || 1981 (atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_FETCH_ADD)) 1982 atomic_mode = atomic_size_to_mode(atomic_size_mask); 1983 1984 if (atomic_mode <= 0 && 1985 (atomic_operations & MLX5_ATOMIC_OPS_CMP_SWAP && 1986 atomic_operations & MLX5_ATOMIC_OPS_FETCH_ADD)) 1987 atomic_mode = MLX5_ATOMIC_MODE_IB_COMP; 1988 1989 return atomic_mode; 1990 } 1991 1992 static int create_xrc_tgt_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 1993 struct mlx5_create_qp_params *params) 1994 { 1995 struct ib_qp_init_attr *attr = params->attr; 1996 u32 uidx = params->uidx; 1997 struct mlx5_ib_resources *devr = &dev->devr; 1998 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {}; 1999 int inlen = MLX5_ST_SZ_BYTES(create_qp_in); 2000 struct mlx5_core_dev *mdev = dev->mdev; 2001 struct mlx5_ib_qp_base *base; 2002 unsigned long flags; 2003 void *qpc; 2004 u32 *in; 2005 int err; 2006 2007 if (attr->sq_sig_type == IB_SIGNAL_ALL_WR) 2008 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE; 2009 2010 in = kvzalloc(inlen, GFP_KERNEL); 2011 if (!in) 2012 return -ENOMEM; 2013 2014 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); 2015 2016 MLX5_SET(qpc, qpc, st, MLX5_QP_ST_XRC); 2017 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); 2018 MLX5_SET(qpc, qpc, pd, to_mpd(devr->p0)->pdn); 2019 2020 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) 2021 MLX5_SET(qpc, qpc, block_lb_mc, 1); 2022 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL) 2023 MLX5_SET(qpc, qpc, cd_master, 1); 2024 if (qp->flags & IB_QP_CREATE_MANAGED_SEND) 2025 MLX5_SET(qpc, qpc, cd_slave_send, 1); 2026 if (qp->flags & IB_QP_CREATE_MANAGED_RECV) 2027 MLX5_SET(qpc, qpc, cd_slave_receive, 1); 2028 2029 MLX5_SET(qpc, qpc, ts_format, mlx5_get_qp_default_ts(dev->mdev)); 2030 MLX5_SET(qpc, qpc, rq_type, MLX5_SRQ_RQ); 2031 MLX5_SET(qpc, qpc, no_sq, 1); 2032 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn); 2033 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn); 2034 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn); 2035 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(attr->xrcd)->xrcdn); 2036 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma); 2037 2038 /* 0xffffff means we ask to work with cqe version 0 */ 2039 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1) 2040 MLX5_SET(qpc, qpc, user_index, uidx); 2041 2042 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) { 2043 MLX5_SET(qpc, qpc, end_padding_mode, 2044 MLX5_WQ_END_PAD_MODE_ALIGN); 2045 /* Special case to clean flag */ 2046 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING; 2047 } 2048 2049 base = &qp->trans_qp.base; 2050 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out); 2051 kvfree(in); 2052 if (err) 2053 return err; 2054 2055 base->container_mibqp = qp; 2056 base->mqp.event = mlx5_ib_qp_event; 2057 if (MLX5_CAP_GEN(mdev, ece_support)) 2058 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece); 2059 2060 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); 2061 list_add_tail(&qp->qps_list, &dev->qp_list); 2062 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); 2063 2064 qp->trans_qp.xrcdn = to_mxrcd(attr->xrcd)->xrcdn; 2065 return 0; 2066 } 2067 2068 static int create_dci(struct mlx5_ib_dev *dev, struct ib_pd *pd, 2069 struct mlx5_ib_qp *qp, 2070 struct mlx5_create_qp_params *params) 2071 { 2072 struct ib_qp_init_attr *init_attr = params->attr; 2073 struct mlx5_ib_create_qp *ucmd = params->ucmd; 2074 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {}; 2075 struct ib_udata *udata = params->udata; 2076 u32 uidx = params->uidx; 2077 struct mlx5_ib_resources *devr = &dev->devr; 2078 int inlen = MLX5_ST_SZ_BYTES(create_qp_in); 2079 struct mlx5_core_dev *mdev = dev->mdev; 2080 struct mlx5_ib_cq *send_cq; 2081 struct mlx5_ib_cq *recv_cq; 2082 unsigned long flags; 2083 struct mlx5_ib_qp_base *base; 2084 int ts_format; 2085 int mlx5_st; 2086 void *qpc; 2087 u32 *in; 2088 int err; 2089 2090 spin_lock_init(&qp->sq.lock); 2091 spin_lock_init(&qp->rq.lock); 2092 2093 mlx5_st = to_mlx5_st(qp->type); 2094 if (mlx5_st < 0) 2095 return -EINVAL; 2096 2097 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) 2098 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE; 2099 2100 base = &qp->trans_qp.base; 2101 2102 qp->has_rq = qp_has_rq(init_attr); 2103 err = set_rq_size(dev, &init_attr->cap, qp->has_rq, qp, ucmd); 2104 if (err) { 2105 mlx5_ib_dbg(dev, "err %d\n", err); 2106 return err; 2107 } 2108 2109 if (ucmd->rq_wqe_shift != qp->rq.wqe_shift || 2110 ucmd->rq_wqe_count != qp->rq.wqe_cnt) 2111 return -EINVAL; 2112 2113 if (ucmd->sq_wqe_count > (1 << MLX5_CAP_GEN(mdev, log_max_qp_sz))) 2114 return -EINVAL; 2115 2116 ts_format = get_qp_ts_format(dev, to_mcq(init_attr->send_cq), 2117 to_mcq(init_attr->recv_cq)); 2118 2119 if (ts_format < 0) 2120 return ts_format; 2121 2122 err = _create_user_qp(dev, pd, qp, udata, init_attr, &in, ¶ms->resp, 2123 &inlen, base, ucmd); 2124 if (err) 2125 return err; 2126 2127 if (MLX5_CAP_GEN(mdev, ece_support)) 2128 MLX5_SET(create_qp_in, in, ece, ucmd->ece_options); 2129 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); 2130 2131 MLX5_SET(qpc, qpc, st, mlx5_st); 2132 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); 2133 MLX5_SET(qpc, qpc, pd, to_mpd(pd)->pdn); 2134 2135 if (qp->flags_en & MLX5_QP_FLAG_SIGNATURE) 2136 MLX5_SET(qpc, qpc, wq_signature, 1); 2137 2138 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL) 2139 MLX5_SET(qpc, qpc, cd_master, 1); 2140 if (qp->flags & IB_QP_CREATE_MANAGED_SEND) 2141 MLX5_SET(qpc, qpc, cd_slave_send, 1); 2142 if (qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) 2143 configure_requester_scat_cqe(dev, qp, init_attr, qpc); 2144 2145 if (qp->rq.wqe_cnt) { 2146 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4); 2147 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt)); 2148 } 2149 2150 if (qp->flags_en & MLX5_QP_FLAG_DCI_STREAM) { 2151 MLX5_SET(qpc, qpc, log_num_dci_stream_channels, 2152 ucmd->dci_streams.log_num_concurent); 2153 MLX5_SET(qpc, qpc, log_num_dci_errored_streams, 2154 ucmd->dci_streams.log_num_errored); 2155 } 2156 2157 MLX5_SET(qpc, qpc, ts_format, ts_format); 2158 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr)); 2159 2160 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt)); 2161 2162 /* Set default resources */ 2163 if (init_attr->srq) { 2164 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0); 2165 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, 2166 to_msrq(init_attr->srq)->msrq.srqn); 2167 } else { 2168 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1); 2169 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, 2170 to_msrq(devr->s1)->msrq.srqn); 2171 } 2172 2173 if (init_attr->send_cq) 2174 MLX5_SET(qpc, qpc, cqn_snd, 2175 to_mcq(init_attr->send_cq)->mcq.cqn); 2176 2177 if (init_attr->recv_cq) 2178 MLX5_SET(qpc, qpc, cqn_rcv, 2179 to_mcq(init_attr->recv_cq)->mcq.cqn); 2180 2181 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma); 2182 2183 /* 0xffffff means we ask to work with cqe version 0 */ 2184 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1) 2185 MLX5_SET(qpc, qpc, user_index, uidx); 2186 2187 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) { 2188 MLX5_SET(qpc, qpc, end_padding_mode, 2189 MLX5_WQ_END_PAD_MODE_ALIGN); 2190 /* Special case to clean flag */ 2191 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING; 2192 } 2193 2194 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out); 2195 2196 kvfree(in); 2197 if (err) 2198 goto err_create; 2199 2200 base->container_mibqp = qp; 2201 base->mqp.event = mlx5_ib_qp_event; 2202 if (MLX5_CAP_GEN(mdev, ece_support)) 2203 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece); 2204 2205 get_cqs(qp->type, init_attr->send_cq, init_attr->recv_cq, 2206 &send_cq, &recv_cq); 2207 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); 2208 mlx5_ib_lock_cqs(send_cq, recv_cq); 2209 /* Maintain device to QPs access, needed for further handling via reset 2210 * flow 2211 */ 2212 list_add_tail(&qp->qps_list, &dev->qp_list); 2213 /* Maintain CQ to QPs access, needed for further handling via reset flow 2214 */ 2215 if (send_cq) 2216 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp); 2217 if (recv_cq) 2218 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp); 2219 mlx5_ib_unlock_cqs(send_cq, recv_cq); 2220 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); 2221 2222 return 0; 2223 2224 err_create: 2225 destroy_qp(dev, qp, base, udata); 2226 return err; 2227 } 2228 2229 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, 2230 struct mlx5_ib_qp *qp, 2231 struct mlx5_create_qp_params *params) 2232 { 2233 struct ib_qp_init_attr *init_attr = params->attr; 2234 struct mlx5_ib_create_qp *ucmd = params->ucmd; 2235 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {}; 2236 struct ib_udata *udata = params->udata; 2237 u32 uidx = params->uidx; 2238 struct mlx5_ib_resources *devr = &dev->devr; 2239 int inlen = MLX5_ST_SZ_BYTES(create_qp_in); 2240 struct mlx5_core_dev *mdev = dev->mdev; 2241 struct mlx5_ib_cq *send_cq; 2242 struct mlx5_ib_cq *recv_cq; 2243 unsigned long flags; 2244 struct mlx5_ib_qp_base *base; 2245 int ts_format; 2246 int mlx5_st; 2247 void *qpc; 2248 u32 *in; 2249 int err; 2250 2251 spin_lock_init(&qp->sq.lock); 2252 spin_lock_init(&qp->rq.lock); 2253 2254 mlx5_st = to_mlx5_st(qp->type); 2255 if (mlx5_st < 0) 2256 return -EINVAL; 2257 2258 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) 2259 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE; 2260 2261 if (qp->flags & IB_QP_CREATE_SOURCE_QPN) 2262 qp->underlay_qpn = init_attr->source_qpn; 2263 2264 base = (init_attr->qp_type == IB_QPT_RAW_PACKET || 2265 qp->flags & IB_QP_CREATE_SOURCE_QPN) ? 2266 &qp->raw_packet_qp.rq.base : 2267 &qp->trans_qp.base; 2268 2269 qp->has_rq = qp_has_rq(init_attr); 2270 err = set_rq_size(dev, &init_attr->cap, qp->has_rq, qp, ucmd); 2271 if (err) { 2272 mlx5_ib_dbg(dev, "err %d\n", err); 2273 return err; 2274 } 2275 2276 if (ucmd->rq_wqe_shift != qp->rq.wqe_shift || 2277 ucmd->rq_wqe_count != qp->rq.wqe_cnt) 2278 return -EINVAL; 2279 2280 if (ucmd->sq_wqe_count > (1 << MLX5_CAP_GEN(mdev, log_max_qp_sz))) 2281 return -EINVAL; 2282 2283 if (init_attr->qp_type != IB_QPT_RAW_PACKET) { 2284 ts_format = get_qp_ts_format(dev, to_mcq(init_attr->send_cq), 2285 to_mcq(init_attr->recv_cq)); 2286 if (ts_format < 0) 2287 return ts_format; 2288 } 2289 2290 err = _create_user_qp(dev, pd, qp, udata, init_attr, &in, ¶ms->resp, 2291 &inlen, base, ucmd); 2292 if (err) 2293 return err; 2294 2295 if (is_sqp(init_attr->qp_type)) 2296 qp->port = init_attr->port_num; 2297 2298 if (MLX5_CAP_GEN(mdev, ece_support)) 2299 MLX5_SET(create_qp_in, in, ece, ucmd->ece_options); 2300 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); 2301 2302 MLX5_SET(qpc, qpc, st, mlx5_st); 2303 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); 2304 MLX5_SET(qpc, qpc, pd, to_mpd(pd)->pdn); 2305 2306 if (qp->flags_en & MLX5_QP_FLAG_SIGNATURE) 2307 MLX5_SET(qpc, qpc, wq_signature, 1); 2308 2309 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) 2310 MLX5_SET(qpc, qpc, block_lb_mc, 1); 2311 2312 if (qp->flags & IB_QP_CREATE_CROSS_CHANNEL) 2313 MLX5_SET(qpc, qpc, cd_master, 1); 2314 if (qp->flags & IB_QP_CREATE_MANAGED_SEND) 2315 MLX5_SET(qpc, qpc, cd_slave_send, 1); 2316 if (qp->flags & IB_QP_CREATE_MANAGED_RECV) 2317 MLX5_SET(qpc, qpc, cd_slave_receive, 1); 2318 if (qp->flags_en & MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE) 2319 MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1); 2320 if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) && 2321 (init_attr->qp_type == IB_QPT_RC || 2322 init_attr->qp_type == IB_QPT_UC)) { 2323 int rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq); 2324 2325 MLX5_SET(qpc, qpc, cs_res, 2326 rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE : 2327 MLX5_RES_SCAT_DATA32_CQE); 2328 } 2329 if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) && 2330 (qp->type == MLX5_IB_QPT_DCI || qp->type == IB_QPT_RC)) 2331 configure_requester_scat_cqe(dev, qp, init_attr, qpc); 2332 2333 if (qp->rq.wqe_cnt) { 2334 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4); 2335 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt)); 2336 } 2337 2338 if (init_attr->qp_type != IB_QPT_RAW_PACKET) 2339 MLX5_SET(qpc, qpc, ts_format, ts_format); 2340 2341 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr)); 2342 2343 if (qp->sq.wqe_cnt) { 2344 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt)); 2345 } else { 2346 MLX5_SET(qpc, qpc, no_sq, 1); 2347 if (init_attr->srq && 2348 init_attr->srq->srq_type == IB_SRQT_TM) 2349 MLX5_SET(qpc, qpc, offload_type, 2350 MLX5_QPC_OFFLOAD_TYPE_RNDV); 2351 } 2352 2353 /* Set default resources */ 2354 switch (init_attr->qp_type) { 2355 case IB_QPT_XRC_INI: 2356 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn); 2357 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1); 2358 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn); 2359 break; 2360 default: 2361 if (init_attr->srq) { 2362 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0); 2363 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn); 2364 } else { 2365 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1); 2366 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn); 2367 } 2368 } 2369 2370 if (init_attr->send_cq) 2371 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn); 2372 2373 if (init_attr->recv_cq) 2374 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn); 2375 2376 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma); 2377 2378 /* 0xffffff means we ask to work with cqe version 0 */ 2379 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1) 2380 MLX5_SET(qpc, qpc, user_index, uidx); 2381 2382 if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING && 2383 init_attr->qp_type != IB_QPT_RAW_PACKET) { 2384 MLX5_SET(qpc, qpc, end_padding_mode, 2385 MLX5_WQ_END_PAD_MODE_ALIGN); 2386 /* Special case to clean flag */ 2387 qp->flags &= ~IB_QP_CREATE_PCI_WRITE_END_PADDING; 2388 } 2389 2390 if (init_attr->qp_type == IB_QPT_RAW_PACKET || 2391 qp->flags & IB_QP_CREATE_SOURCE_QPN) { 2392 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd->sq_buf_addr; 2393 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp); 2394 err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata, 2395 ¶ms->resp, init_attr); 2396 } else 2397 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out); 2398 2399 kvfree(in); 2400 if (err) 2401 goto err_create; 2402 2403 base->container_mibqp = qp; 2404 base->mqp.event = mlx5_ib_qp_event; 2405 if (MLX5_CAP_GEN(mdev, ece_support)) 2406 params->resp.ece_options = MLX5_GET(create_qp_out, out, ece); 2407 2408 get_cqs(qp->type, init_attr->send_cq, init_attr->recv_cq, 2409 &send_cq, &recv_cq); 2410 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); 2411 mlx5_ib_lock_cqs(send_cq, recv_cq); 2412 /* Maintain device to QPs access, needed for further handling via reset 2413 * flow 2414 */ 2415 list_add_tail(&qp->qps_list, &dev->qp_list); 2416 /* Maintain CQ to QPs access, needed for further handling via reset flow 2417 */ 2418 if (send_cq) 2419 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp); 2420 if (recv_cq) 2421 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp); 2422 mlx5_ib_unlock_cqs(send_cq, recv_cq); 2423 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); 2424 2425 return 0; 2426 2427 err_create: 2428 destroy_qp(dev, qp, base, udata); 2429 return err; 2430 } 2431 2432 static int create_kernel_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, 2433 struct mlx5_ib_qp *qp, 2434 struct mlx5_create_qp_params *params) 2435 { 2436 struct ib_qp_init_attr *attr = params->attr; 2437 u32 uidx = params->uidx; 2438 struct mlx5_ib_resources *devr = &dev->devr; 2439 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {}; 2440 int inlen = MLX5_ST_SZ_BYTES(create_qp_in); 2441 struct mlx5_core_dev *mdev = dev->mdev; 2442 struct mlx5_ib_cq *send_cq; 2443 struct mlx5_ib_cq *recv_cq; 2444 unsigned long flags; 2445 struct mlx5_ib_qp_base *base; 2446 int mlx5_st; 2447 void *qpc; 2448 u32 *in; 2449 int err; 2450 2451 spin_lock_init(&qp->sq.lock); 2452 spin_lock_init(&qp->rq.lock); 2453 2454 mlx5_st = to_mlx5_st(qp->type); 2455 if (mlx5_st < 0) 2456 return -EINVAL; 2457 2458 if (attr->sq_sig_type == IB_SIGNAL_ALL_WR) 2459 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE; 2460 2461 base = &qp->trans_qp.base; 2462 2463 qp->has_rq = qp_has_rq(attr); 2464 err = set_rq_size(dev, &attr->cap, qp->has_rq, qp, NULL); 2465 if (err) { 2466 mlx5_ib_dbg(dev, "err %d\n", err); 2467 return err; 2468 } 2469 2470 err = _create_kernel_qp(dev, attr, qp, &in, &inlen, base); 2471 if (err) 2472 return err; 2473 2474 if (is_sqp(attr->qp_type)) 2475 qp->port = attr->port_num; 2476 2477 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); 2478 2479 MLX5_SET(qpc, qpc, st, mlx5_st); 2480 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); 2481 2482 if (attr->qp_type != MLX5_IB_QPT_REG_UMR) 2483 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn); 2484 else 2485 MLX5_SET(qpc, qpc, latency_sensitive, 1); 2486 2487 2488 if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) 2489 MLX5_SET(qpc, qpc, block_lb_mc, 1); 2490 2491 if (qp->rq.wqe_cnt) { 2492 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4); 2493 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt)); 2494 } 2495 2496 MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, attr)); 2497 2498 if (qp->sq.wqe_cnt) 2499 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt)); 2500 else 2501 MLX5_SET(qpc, qpc, no_sq, 1); 2502 2503 if (attr->srq) { 2504 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn0); 2505 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, 2506 to_msrq(attr->srq)->msrq.srqn); 2507 } else { 2508 MLX5_SET(qpc, qpc, xrcd, devr->xrcdn1); 2509 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, 2510 to_msrq(devr->s1)->msrq.srqn); 2511 } 2512 2513 if (attr->send_cq) 2514 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(attr->send_cq)->mcq.cqn); 2515 2516 if (attr->recv_cq) 2517 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(attr->recv_cq)->mcq.cqn); 2518 2519 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma); 2520 2521 /* 0xffffff means we ask to work with cqe version 0 */ 2522 if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1) 2523 MLX5_SET(qpc, qpc, user_index, uidx); 2524 2525 /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */ 2526 if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) 2527 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1); 2528 2529 if (qp->flags & IB_QP_CREATE_INTEGRITY_EN && 2530 MLX5_CAP_GEN(mdev, go_back_n)) 2531 MLX5_SET(qpc, qpc, retry_mode, MLX5_QP_RM_GO_BACK_N); 2532 2533 err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out); 2534 kvfree(in); 2535 if (err) 2536 goto err_create; 2537 2538 base->container_mibqp = qp; 2539 base->mqp.event = mlx5_ib_qp_event; 2540 2541 get_cqs(qp->type, attr->send_cq, attr->recv_cq, 2542 &send_cq, &recv_cq); 2543 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); 2544 mlx5_ib_lock_cqs(send_cq, recv_cq); 2545 /* Maintain device to QPs access, needed for further handling via reset 2546 * flow 2547 */ 2548 list_add_tail(&qp->qps_list, &dev->qp_list); 2549 /* Maintain CQ to QPs access, needed for further handling via reset flow 2550 */ 2551 if (send_cq) 2552 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp); 2553 if (recv_cq) 2554 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp); 2555 mlx5_ib_unlock_cqs(send_cq, recv_cq); 2556 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); 2557 2558 return 0; 2559 2560 err_create: 2561 destroy_qp(dev, qp, base, NULL); 2562 return err; 2563 } 2564 2565 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq) 2566 __acquires(&send_cq->lock) __acquires(&recv_cq->lock) 2567 { 2568 if (send_cq) { 2569 if (recv_cq) { 2570 if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { 2571 spin_lock(&send_cq->lock); 2572 spin_lock_nested(&recv_cq->lock, 2573 SINGLE_DEPTH_NESTING); 2574 } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) { 2575 spin_lock(&send_cq->lock); 2576 __acquire(&recv_cq->lock); 2577 } else { 2578 spin_lock(&recv_cq->lock); 2579 spin_lock_nested(&send_cq->lock, 2580 SINGLE_DEPTH_NESTING); 2581 } 2582 } else { 2583 spin_lock(&send_cq->lock); 2584 __acquire(&recv_cq->lock); 2585 } 2586 } else if (recv_cq) { 2587 spin_lock(&recv_cq->lock); 2588 __acquire(&send_cq->lock); 2589 } else { 2590 __acquire(&send_cq->lock); 2591 __acquire(&recv_cq->lock); 2592 } 2593 } 2594 2595 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq) 2596 __releases(&send_cq->lock) __releases(&recv_cq->lock) 2597 { 2598 if (send_cq) { 2599 if (recv_cq) { 2600 if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { 2601 spin_unlock(&recv_cq->lock); 2602 spin_unlock(&send_cq->lock); 2603 } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) { 2604 __release(&recv_cq->lock); 2605 spin_unlock(&send_cq->lock); 2606 } else { 2607 spin_unlock(&send_cq->lock); 2608 spin_unlock(&recv_cq->lock); 2609 } 2610 } else { 2611 __release(&recv_cq->lock); 2612 spin_unlock(&send_cq->lock); 2613 } 2614 } else if (recv_cq) { 2615 __release(&send_cq->lock); 2616 spin_unlock(&recv_cq->lock); 2617 } else { 2618 __release(&recv_cq->lock); 2619 __release(&send_cq->lock); 2620 } 2621 } 2622 2623 static void get_cqs(enum ib_qp_type qp_type, 2624 struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq, 2625 struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq) 2626 { 2627 switch (qp_type) { 2628 case IB_QPT_XRC_TGT: 2629 *send_cq = NULL; 2630 *recv_cq = NULL; 2631 break; 2632 case MLX5_IB_QPT_REG_UMR: 2633 case IB_QPT_XRC_INI: 2634 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL; 2635 *recv_cq = NULL; 2636 break; 2637 2638 case IB_QPT_SMI: 2639 case MLX5_IB_QPT_HW_GSI: 2640 case IB_QPT_RC: 2641 case IB_QPT_UC: 2642 case IB_QPT_UD: 2643 case IB_QPT_RAW_PACKET: 2644 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL; 2645 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL; 2646 break; 2647 default: 2648 *send_cq = NULL; 2649 *recv_cq = NULL; 2650 break; 2651 } 2652 } 2653 2654 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 2655 const struct mlx5_modify_raw_qp_param *raw_qp_param, 2656 u8 lag_tx_affinity); 2657 2658 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 2659 struct ib_udata *udata) 2660 { 2661 struct mlx5_ib_cq *send_cq, *recv_cq; 2662 struct mlx5_ib_qp_base *base; 2663 unsigned long flags; 2664 int err; 2665 2666 if (qp->is_rss) { 2667 destroy_rss_raw_qp_tir(dev, qp); 2668 return; 2669 } 2670 2671 base = (qp->type == IB_QPT_RAW_PACKET || 2672 qp->flags & IB_QP_CREATE_SOURCE_QPN) ? 2673 &qp->raw_packet_qp.rq.base : 2674 &qp->trans_qp.base; 2675 2676 if (qp->state != IB_QPS_RESET) { 2677 if (qp->type != IB_QPT_RAW_PACKET && 2678 !(qp->flags & IB_QP_CREATE_SOURCE_QPN)) { 2679 err = mlx5_core_qp_modify(dev, MLX5_CMD_OP_2RST_QP, 0, 2680 NULL, &base->mqp, NULL); 2681 } else { 2682 struct mlx5_modify_raw_qp_param raw_qp_param = { 2683 .operation = MLX5_CMD_OP_2RST_QP 2684 }; 2685 2686 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0); 2687 } 2688 if (err) 2689 mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n", 2690 base->mqp.qpn); 2691 } 2692 2693 get_cqs(qp->type, qp->ibqp.send_cq, qp->ibqp.recv_cq, &send_cq, 2694 &recv_cq); 2695 2696 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); 2697 mlx5_ib_lock_cqs(send_cq, recv_cq); 2698 /* del from lists under both locks above to protect reset flow paths */ 2699 list_del(&qp->qps_list); 2700 if (send_cq) 2701 list_del(&qp->cq_send_list); 2702 2703 if (recv_cq) 2704 list_del(&qp->cq_recv_list); 2705 2706 if (!udata) { 2707 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn, 2708 qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL); 2709 if (send_cq != recv_cq) 2710 __mlx5_ib_cq_clean(send_cq, base->mqp.qpn, 2711 NULL); 2712 } 2713 mlx5_ib_unlock_cqs(send_cq, recv_cq); 2714 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); 2715 2716 if (qp->type == IB_QPT_RAW_PACKET || 2717 qp->flags & IB_QP_CREATE_SOURCE_QPN) { 2718 destroy_raw_packet_qp(dev, qp); 2719 } else { 2720 err = mlx5_core_destroy_qp(dev, &base->mqp); 2721 if (err) 2722 mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n", 2723 base->mqp.qpn); 2724 } 2725 2726 destroy_qp(dev, qp, base, udata); 2727 } 2728 2729 static int create_dct(struct mlx5_ib_dev *dev, struct ib_pd *pd, 2730 struct mlx5_ib_qp *qp, 2731 struct mlx5_create_qp_params *params) 2732 { 2733 struct ib_qp_init_attr *attr = params->attr; 2734 struct mlx5_ib_create_qp *ucmd = params->ucmd; 2735 u32 uidx = params->uidx; 2736 void *dctc; 2737 2738 if (mlx5_lag_is_active(dev->mdev) && !MLX5_CAP_GEN(dev->mdev, lag_dct)) 2739 return -EOPNOTSUPP; 2740 2741 qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL); 2742 if (!qp->dct.in) 2743 return -ENOMEM; 2744 2745 MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid); 2746 dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry); 2747 MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn); 2748 MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn); 2749 MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn); 2750 MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key); 2751 MLX5_SET(dctc, dctc, user_index, uidx); 2752 if (MLX5_CAP_GEN(dev->mdev, ece_support)) 2753 MLX5_SET(dctc, dctc, ece, ucmd->ece_options); 2754 2755 if (qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) { 2756 int rcqe_sz = mlx5_ib_get_cqe_size(attr->recv_cq); 2757 2758 if (rcqe_sz == 128) 2759 MLX5_SET(dctc, dctc, cs_res, MLX5_RES_SCAT_DATA64_CQE); 2760 } 2761 2762 qp->state = IB_QPS_RESET; 2763 return 0; 2764 } 2765 2766 static int check_qp_type(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr, 2767 enum ib_qp_type *type) 2768 { 2769 if (attr->qp_type == IB_QPT_DRIVER && !MLX5_CAP_GEN(dev->mdev, dct)) 2770 goto out; 2771 2772 switch (attr->qp_type) { 2773 case IB_QPT_XRC_TGT: 2774 case IB_QPT_XRC_INI: 2775 if (!MLX5_CAP_GEN(dev->mdev, xrc)) 2776 goto out; 2777 fallthrough; 2778 case IB_QPT_RC: 2779 case IB_QPT_UC: 2780 case IB_QPT_SMI: 2781 case MLX5_IB_QPT_HW_GSI: 2782 case IB_QPT_DRIVER: 2783 case IB_QPT_GSI: 2784 case IB_QPT_RAW_PACKET: 2785 case IB_QPT_UD: 2786 case MLX5_IB_QPT_REG_UMR: 2787 break; 2788 default: 2789 goto out; 2790 } 2791 2792 *type = attr->qp_type; 2793 return 0; 2794 2795 out: 2796 mlx5_ib_dbg(dev, "Unsupported QP type %d\n", attr->qp_type); 2797 return -EOPNOTSUPP; 2798 } 2799 2800 static int check_valid_flow(struct mlx5_ib_dev *dev, struct ib_pd *pd, 2801 struct ib_qp_init_attr *attr, 2802 struct ib_udata *udata) 2803 { 2804 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context( 2805 udata, struct mlx5_ib_ucontext, ibucontext); 2806 2807 if (!udata) { 2808 /* Kernel create_qp callers */ 2809 if (attr->rwq_ind_tbl) 2810 return -EOPNOTSUPP; 2811 2812 switch (attr->qp_type) { 2813 case IB_QPT_RAW_PACKET: 2814 case IB_QPT_DRIVER: 2815 return -EOPNOTSUPP; 2816 default: 2817 return 0; 2818 } 2819 } 2820 2821 /* Userspace create_qp callers */ 2822 if (attr->qp_type == IB_QPT_RAW_PACKET && !ucontext->cqe_version) { 2823 mlx5_ib_dbg(dev, 2824 "Raw Packet QP is only supported for CQE version > 0\n"); 2825 return -EINVAL; 2826 } 2827 2828 if (attr->qp_type != IB_QPT_RAW_PACKET && attr->rwq_ind_tbl) { 2829 mlx5_ib_dbg(dev, 2830 "Wrong QP type %d for the RWQ indirect table\n", 2831 attr->qp_type); 2832 return -EINVAL; 2833 } 2834 2835 /* 2836 * We don't need to see this warning, it means that kernel code 2837 * missing ib_pd. Placed here to catch developer's mistakes. 2838 */ 2839 WARN_ONCE(!pd && attr->qp_type != IB_QPT_XRC_TGT, 2840 "There is a missing PD pointer assignment\n"); 2841 return 0; 2842 } 2843 2844 static void process_vendor_flag(struct mlx5_ib_dev *dev, int *flags, int flag, 2845 bool cond, struct mlx5_ib_qp *qp) 2846 { 2847 if (!(*flags & flag)) 2848 return; 2849 2850 if (cond) { 2851 qp->flags_en |= flag; 2852 *flags &= ~flag; 2853 return; 2854 } 2855 2856 switch (flag) { 2857 case MLX5_QP_FLAG_SCATTER_CQE: 2858 case MLX5_QP_FLAG_ALLOW_SCATTER_CQE: 2859 /* 2860 * We don't return error if these flags were provided, 2861 * and mlx5 doesn't have right capability. 2862 */ 2863 *flags &= ~(MLX5_QP_FLAG_SCATTER_CQE | 2864 MLX5_QP_FLAG_ALLOW_SCATTER_CQE); 2865 return; 2866 default: 2867 break; 2868 } 2869 mlx5_ib_dbg(dev, "Vendor create QP flag 0x%X is not supported\n", flag); 2870 } 2871 2872 static int process_vendor_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 2873 void *ucmd, struct ib_qp_init_attr *attr) 2874 { 2875 struct mlx5_core_dev *mdev = dev->mdev; 2876 bool cond; 2877 int flags; 2878 2879 if (attr->rwq_ind_tbl) 2880 flags = ((struct mlx5_ib_create_qp_rss *)ucmd)->flags; 2881 else 2882 flags = ((struct mlx5_ib_create_qp *)ucmd)->flags; 2883 2884 switch (flags & (MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI)) { 2885 case MLX5_QP_FLAG_TYPE_DCI: 2886 qp->type = MLX5_IB_QPT_DCI; 2887 break; 2888 case MLX5_QP_FLAG_TYPE_DCT: 2889 qp->type = MLX5_IB_QPT_DCT; 2890 break; 2891 default: 2892 if (qp->type != IB_QPT_DRIVER) 2893 break; 2894 /* 2895 * It is IB_QPT_DRIVER and or no subtype or 2896 * wrong subtype were provided. 2897 */ 2898 return -EINVAL; 2899 } 2900 2901 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TYPE_DCI, true, qp); 2902 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TYPE_DCT, true, qp); 2903 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_DCI_STREAM, 2904 MLX5_CAP_GEN(mdev, log_max_dci_stream_channels), 2905 qp); 2906 2907 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SIGNATURE, true, qp); 2908 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SCATTER_CQE, 2909 MLX5_CAP_GEN(mdev, sctr_data_cqe), qp); 2910 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_ALLOW_SCATTER_CQE, 2911 MLX5_CAP_GEN(mdev, sctr_data_cqe), qp); 2912 2913 if (qp->type == IB_QPT_RAW_PACKET) { 2914 cond = MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan) || 2915 MLX5_CAP_ETH(mdev, tunnel_stateless_gre) || 2916 MLX5_CAP_ETH(mdev, tunnel_stateless_geneve_rx); 2917 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_TUNNEL_OFFLOADS, 2918 cond, qp); 2919 process_vendor_flag(dev, &flags, 2920 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC, true, 2921 qp); 2922 process_vendor_flag(dev, &flags, 2923 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC, true, 2924 qp); 2925 } 2926 2927 if (qp->type == IB_QPT_RC) 2928 process_vendor_flag(dev, &flags, 2929 MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE, 2930 MLX5_CAP_GEN(mdev, qp_packet_based), qp); 2931 2932 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_BFREG_INDEX, true, qp); 2933 process_vendor_flag(dev, &flags, MLX5_QP_FLAG_UAR_PAGE_INDEX, true, qp); 2934 2935 cond = qp->flags_en & ~(MLX5_QP_FLAG_TUNNEL_OFFLOADS | 2936 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC | 2937 MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC); 2938 if (attr->rwq_ind_tbl && cond) { 2939 mlx5_ib_dbg(dev, "RSS RAW QP has unsupported flags 0x%X\n", 2940 cond); 2941 return -EINVAL; 2942 } 2943 2944 if (flags) 2945 mlx5_ib_dbg(dev, "udata has unsupported flags 0x%X\n", flags); 2946 2947 return (flags) ? -EINVAL : 0; 2948 } 2949 2950 static void process_create_flag(struct mlx5_ib_dev *dev, int *flags, int flag, 2951 bool cond, struct mlx5_ib_qp *qp) 2952 { 2953 if (!(*flags & flag)) 2954 return; 2955 2956 if (cond) { 2957 qp->flags |= flag; 2958 *flags &= ~flag; 2959 return; 2960 } 2961 2962 if (flag == MLX5_IB_QP_CREATE_WC_TEST) { 2963 /* 2964 * Special case, if condition didn't meet, it won't be error, 2965 * just different in-kernel flow. 2966 */ 2967 *flags &= ~MLX5_IB_QP_CREATE_WC_TEST; 2968 return; 2969 } 2970 mlx5_ib_dbg(dev, "Verbs create QP flag 0x%X is not supported\n", flag); 2971 } 2972 2973 static int process_create_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 2974 struct ib_qp_init_attr *attr) 2975 { 2976 enum ib_qp_type qp_type = qp->type; 2977 struct mlx5_core_dev *mdev = dev->mdev; 2978 int create_flags = attr->create_flags; 2979 bool cond; 2980 2981 if (qp_type == MLX5_IB_QPT_DCT) 2982 return (create_flags) ? -EINVAL : 0; 2983 2984 if (qp_type == IB_QPT_RAW_PACKET && attr->rwq_ind_tbl) 2985 return (create_flags) ? -EINVAL : 0; 2986 2987 process_create_flag(dev, &create_flags, IB_QP_CREATE_NETIF_QP, 2988 mlx5_get_flow_namespace(dev->mdev, 2989 MLX5_FLOW_NAMESPACE_BYPASS), 2990 qp); 2991 process_create_flag(dev, &create_flags, 2992 IB_QP_CREATE_INTEGRITY_EN, 2993 MLX5_CAP_GEN(mdev, sho), qp); 2994 process_create_flag(dev, &create_flags, 2995 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK, 2996 MLX5_CAP_GEN(mdev, block_lb_mc), qp); 2997 process_create_flag(dev, &create_flags, IB_QP_CREATE_CROSS_CHANNEL, 2998 MLX5_CAP_GEN(mdev, cd), qp); 2999 process_create_flag(dev, &create_flags, IB_QP_CREATE_MANAGED_SEND, 3000 MLX5_CAP_GEN(mdev, cd), qp); 3001 process_create_flag(dev, &create_flags, IB_QP_CREATE_MANAGED_RECV, 3002 MLX5_CAP_GEN(mdev, cd), qp); 3003 3004 if (qp_type == IB_QPT_UD) { 3005 process_create_flag(dev, &create_flags, 3006 IB_QP_CREATE_IPOIB_UD_LSO, 3007 MLX5_CAP_GEN(mdev, ipoib_basic_offloads), 3008 qp); 3009 cond = MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_IB; 3010 process_create_flag(dev, &create_flags, IB_QP_CREATE_SOURCE_QPN, 3011 cond, qp); 3012 } 3013 3014 if (qp_type == IB_QPT_RAW_PACKET) { 3015 cond = MLX5_CAP_GEN(mdev, eth_net_offloads) && 3016 MLX5_CAP_ETH(mdev, scatter_fcs); 3017 process_create_flag(dev, &create_flags, 3018 IB_QP_CREATE_SCATTER_FCS, cond, qp); 3019 3020 cond = MLX5_CAP_GEN(mdev, eth_net_offloads) && 3021 MLX5_CAP_ETH(mdev, vlan_cap); 3022 process_create_flag(dev, &create_flags, 3023 IB_QP_CREATE_CVLAN_STRIPPING, cond, qp); 3024 } 3025 3026 process_create_flag(dev, &create_flags, 3027 IB_QP_CREATE_PCI_WRITE_END_PADDING, 3028 MLX5_CAP_GEN(mdev, end_pad), qp); 3029 3030 process_create_flag(dev, &create_flags, MLX5_IB_QP_CREATE_WC_TEST, 3031 qp_type != MLX5_IB_QPT_REG_UMR, qp); 3032 process_create_flag(dev, &create_flags, MLX5_IB_QP_CREATE_SQPN_QP1, 3033 true, qp); 3034 3035 if (create_flags) { 3036 mlx5_ib_dbg(dev, "Create QP has unsupported flags 0x%X\n", 3037 create_flags); 3038 return -EOPNOTSUPP; 3039 } 3040 return 0; 3041 } 3042 3043 static int process_udata_size(struct mlx5_ib_dev *dev, 3044 struct mlx5_create_qp_params *params) 3045 { 3046 size_t ucmd = sizeof(struct mlx5_ib_create_qp); 3047 struct ib_udata *udata = params->udata; 3048 size_t outlen = udata->outlen; 3049 size_t inlen = udata->inlen; 3050 3051 params->outlen = min(outlen, sizeof(struct mlx5_ib_create_qp_resp)); 3052 params->ucmd_size = ucmd; 3053 if (!params->is_rss_raw) { 3054 /* User has old rdma-core, which doesn't support ECE */ 3055 size_t min_inlen = 3056 offsetof(struct mlx5_ib_create_qp, ece_options); 3057 3058 /* 3059 * We will check in check_ucmd_data() that user 3060 * cleared everything after inlen. 3061 */ 3062 params->inlen = (inlen < min_inlen) ? 0 : min(inlen, ucmd); 3063 goto out; 3064 } 3065 3066 /* RSS RAW QP */ 3067 if (inlen < offsetofend(struct mlx5_ib_create_qp_rss, flags)) 3068 return -EINVAL; 3069 3070 if (outlen < offsetofend(struct mlx5_ib_create_qp_resp, bfreg_index)) 3071 return -EINVAL; 3072 3073 ucmd = sizeof(struct mlx5_ib_create_qp_rss); 3074 params->ucmd_size = ucmd; 3075 if (inlen > ucmd && !ib_is_udata_cleared(udata, ucmd, inlen - ucmd)) 3076 return -EINVAL; 3077 3078 params->inlen = min(ucmd, inlen); 3079 out: 3080 if (!params->inlen) 3081 mlx5_ib_dbg(dev, "udata is too small\n"); 3082 3083 return (params->inlen) ? 0 : -EINVAL; 3084 } 3085 3086 static int create_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, 3087 struct mlx5_ib_qp *qp, 3088 struct mlx5_create_qp_params *params) 3089 { 3090 int err; 3091 3092 if (params->is_rss_raw) { 3093 err = create_rss_raw_qp_tir(dev, pd, qp, params); 3094 goto out; 3095 } 3096 3097 switch (qp->type) { 3098 case MLX5_IB_QPT_DCT: 3099 err = create_dct(dev, pd, qp, params); 3100 rdma_restrack_no_track(&qp->ibqp.res); 3101 break; 3102 case MLX5_IB_QPT_DCI: 3103 err = create_dci(dev, pd, qp, params); 3104 break; 3105 case IB_QPT_XRC_TGT: 3106 err = create_xrc_tgt_qp(dev, qp, params); 3107 break; 3108 case IB_QPT_GSI: 3109 err = mlx5_ib_create_gsi(pd, qp, params->attr); 3110 break; 3111 case MLX5_IB_QPT_HW_GSI: 3112 case MLX5_IB_QPT_REG_UMR: 3113 rdma_restrack_no_track(&qp->ibqp.res); 3114 fallthrough; 3115 default: 3116 if (params->udata) 3117 err = create_user_qp(dev, pd, qp, params); 3118 else 3119 err = create_kernel_qp(dev, pd, qp, params); 3120 } 3121 3122 out: 3123 if (err) { 3124 mlx5_ib_err(dev, "Create QP type %d failed\n", qp->type); 3125 return err; 3126 } 3127 3128 if (is_qp0(qp->type)) 3129 qp->ibqp.qp_num = 0; 3130 else if (is_qp1(qp->type)) 3131 qp->ibqp.qp_num = 1; 3132 else 3133 qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn; 3134 3135 mlx5_ib_dbg(dev, 3136 "QP type %d, ib qpn 0x%X, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x, ece 0x%x\n", 3137 qp->type, qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn, 3138 params->attr->recv_cq ? to_mcq(params->attr->recv_cq)->mcq.cqn : 3139 -1, 3140 params->attr->send_cq ? to_mcq(params->attr->send_cq)->mcq.cqn : 3141 -1, 3142 params->resp.ece_options); 3143 3144 return 0; 3145 } 3146 3147 static int check_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 3148 struct ib_qp_init_attr *attr) 3149 { 3150 int ret = 0; 3151 3152 switch (qp->type) { 3153 case MLX5_IB_QPT_DCT: 3154 ret = (!attr->srq || !attr->recv_cq) ? -EINVAL : 0; 3155 break; 3156 case MLX5_IB_QPT_DCI: 3157 ret = (attr->cap.max_recv_wr || attr->cap.max_recv_sge) ? 3158 -EINVAL : 3159 0; 3160 break; 3161 case IB_QPT_RAW_PACKET: 3162 ret = (attr->rwq_ind_tbl && attr->send_cq) ? -EINVAL : 0; 3163 break; 3164 default: 3165 break; 3166 } 3167 3168 if (ret) 3169 mlx5_ib_dbg(dev, "QP type %d has wrong attributes\n", qp->type); 3170 3171 return ret; 3172 } 3173 3174 static int get_qp_uidx(struct mlx5_ib_qp *qp, 3175 struct mlx5_create_qp_params *params) 3176 { 3177 struct mlx5_ib_create_qp *ucmd = params->ucmd; 3178 struct ib_udata *udata = params->udata; 3179 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context( 3180 udata, struct mlx5_ib_ucontext, ibucontext); 3181 3182 if (params->is_rss_raw) 3183 return 0; 3184 3185 return get_qp_user_index(ucontext, ucmd, sizeof(*ucmd), ¶ms->uidx); 3186 } 3187 3188 static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp) 3189 { 3190 struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device); 3191 3192 if (mqp->state == IB_QPS_RTR) { 3193 int err; 3194 3195 err = mlx5_core_destroy_dct(dev, &mqp->dct.mdct); 3196 if (err) { 3197 mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err); 3198 return err; 3199 } 3200 } 3201 3202 kfree(mqp->dct.in); 3203 return 0; 3204 } 3205 3206 static int check_ucmd_data(struct mlx5_ib_dev *dev, 3207 struct mlx5_create_qp_params *params) 3208 { 3209 struct ib_udata *udata = params->udata; 3210 size_t size, last; 3211 int ret; 3212 3213 if (params->is_rss_raw) 3214 /* 3215 * These QPs don't have "reserved" field in their 3216 * create_qp input struct, so their data is always valid. 3217 */ 3218 last = sizeof(struct mlx5_ib_create_qp_rss); 3219 else 3220 last = offsetof(struct mlx5_ib_create_qp, reserved); 3221 3222 if (udata->inlen <= last) 3223 return 0; 3224 3225 /* 3226 * User provides different create_qp structures based on the 3227 * flow and we need to know if he cleared memory after our 3228 * struct create_qp ends. 3229 */ 3230 size = udata->inlen - last; 3231 ret = ib_is_udata_cleared(params->udata, last, size); 3232 if (!ret) 3233 mlx5_ib_dbg( 3234 dev, 3235 "udata is not cleared, inlen = %zu, ucmd = %zu, last = %zu, size = %zu\n", 3236 udata->inlen, params->ucmd_size, last, size); 3237 return ret ? 0 : -EINVAL; 3238 } 3239 3240 int mlx5_ib_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr, 3241 struct ib_udata *udata) 3242 { 3243 struct mlx5_create_qp_params params = {}; 3244 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 3245 struct mlx5_ib_qp *qp = to_mqp(ibqp); 3246 struct ib_pd *pd = ibqp->pd; 3247 enum ib_qp_type type; 3248 int err; 3249 3250 err = check_qp_type(dev, attr, &type); 3251 if (err) 3252 return err; 3253 3254 err = check_valid_flow(dev, pd, attr, udata); 3255 if (err) 3256 return err; 3257 3258 params.udata = udata; 3259 params.uidx = MLX5_IB_DEFAULT_UIDX; 3260 params.attr = attr; 3261 params.is_rss_raw = !!attr->rwq_ind_tbl; 3262 3263 if (udata) { 3264 err = process_udata_size(dev, ¶ms); 3265 if (err) 3266 return err; 3267 3268 err = check_ucmd_data(dev, ¶ms); 3269 if (err) 3270 return err; 3271 3272 params.ucmd = kzalloc(params.ucmd_size, GFP_KERNEL); 3273 if (!params.ucmd) 3274 return -ENOMEM; 3275 3276 err = ib_copy_from_udata(params.ucmd, udata, params.inlen); 3277 if (err) 3278 goto free_ucmd; 3279 } 3280 3281 mutex_init(&qp->mutex); 3282 qp->type = type; 3283 if (udata) { 3284 err = process_vendor_flags(dev, qp, params.ucmd, attr); 3285 if (err) 3286 goto free_ucmd; 3287 3288 err = get_qp_uidx(qp, ¶ms); 3289 if (err) 3290 goto free_ucmd; 3291 } 3292 err = process_create_flags(dev, qp, attr); 3293 if (err) 3294 goto free_ucmd; 3295 3296 err = check_qp_attr(dev, qp, attr); 3297 if (err) 3298 goto free_ucmd; 3299 3300 err = create_qp(dev, pd, qp, ¶ms); 3301 if (err) 3302 goto free_ucmd; 3303 3304 kfree(params.ucmd); 3305 params.ucmd = NULL; 3306 3307 if (udata) 3308 /* 3309 * It is safe to copy response for all user create QP flows, 3310 * including MLX5_IB_QPT_DCT, which doesn't need it. 3311 * In that case, resp will be filled with zeros. 3312 */ 3313 err = ib_copy_to_udata(udata, ¶ms.resp, params.outlen); 3314 if (err) 3315 goto destroy_qp; 3316 3317 return 0; 3318 3319 destroy_qp: 3320 switch (qp->type) { 3321 case MLX5_IB_QPT_DCT: 3322 mlx5_ib_destroy_dct(qp); 3323 break; 3324 case IB_QPT_GSI: 3325 mlx5_ib_destroy_gsi(qp); 3326 break; 3327 default: 3328 destroy_qp_common(dev, qp, udata); 3329 } 3330 3331 free_ucmd: 3332 kfree(params.ucmd); 3333 return err; 3334 } 3335 3336 int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata) 3337 { 3338 struct mlx5_ib_dev *dev = to_mdev(qp->device); 3339 struct mlx5_ib_qp *mqp = to_mqp(qp); 3340 3341 if (mqp->type == IB_QPT_GSI) 3342 return mlx5_ib_destroy_gsi(mqp); 3343 3344 if (mqp->type == MLX5_IB_QPT_DCT) 3345 return mlx5_ib_destroy_dct(mqp); 3346 3347 destroy_qp_common(dev, mqp, udata); 3348 return 0; 3349 } 3350 3351 static int set_qpc_atomic_flags(struct mlx5_ib_qp *qp, 3352 const struct ib_qp_attr *attr, int attr_mask, 3353 void *qpc) 3354 { 3355 struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device); 3356 u8 dest_rd_atomic; 3357 u32 access_flags; 3358 3359 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 3360 dest_rd_atomic = attr->max_dest_rd_atomic; 3361 else 3362 dest_rd_atomic = qp->trans_qp.resp_depth; 3363 3364 if (attr_mask & IB_QP_ACCESS_FLAGS) 3365 access_flags = attr->qp_access_flags; 3366 else 3367 access_flags = qp->trans_qp.atomic_rd_en; 3368 3369 if (!dest_rd_atomic) 3370 access_flags &= IB_ACCESS_REMOTE_WRITE; 3371 3372 MLX5_SET(qpc, qpc, rre, !!(access_flags & IB_ACCESS_REMOTE_READ)); 3373 3374 if (access_flags & IB_ACCESS_REMOTE_ATOMIC) { 3375 int atomic_mode; 3376 3377 atomic_mode = get_atomic_mode(dev, qp->type); 3378 if (atomic_mode < 0) 3379 return -EOPNOTSUPP; 3380 3381 MLX5_SET(qpc, qpc, rae, 1); 3382 MLX5_SET(qpc, qpc, atomic_mode, atomic_mode); 3383 } 3384 3385 MLX5_SET(qpc, qpc, rwe, !!(access_flags & IB_ACCESS_REMOTE_WRITE)); 3386 return 0; 3387 } 3388 3389 enum { 3390 MLX5_PATH_FLAG_FL = 1 << 0, 3391 MLX5_PATH_FLAG_FREE_AR = 1 << 1, 3392 MLX5_PATH_FLAG_COUNTER = 1 << 2, 3393 }; 3394 3395 static int mlx5_to_ib_rate_map(u8 rate) 3396 { 3397 static const int rates[] = { IB_RATE_PORT_CURRENT, IB_RATE_56_GBPS, 3398 IB_RATE_25_GBPS, IB_RATE_100_GBPS, 3399 IB_RATE_200_GBPS, IB_RATE_50_GBPS, 3400 IB_RATE_400_GBPS }; 3401 3402 if (rate < ARRAY_SIZE(rates)) 3403 return rates[rate]; 3404 3405 return rate - MLX5_STAT_RATE_OFFSET; 3406 } 3407 3408 static int ib_to_mlx5_rate_map(u8 rate) 3409 { 3410 switch (rate) { 3411 case IB_RATE_PORT_CURRENT: 3412 return 0; 3413 case IB_RATE_56_GBPS: 3414 return 1; 3415 case IB_RATE_25_GBPS: 3416 return 2; 3417 case IB_RATE_100_GBPS: 3418 return 3; 3419 case IB_RATE_200_GBPS: 3420 return 4; 3421 case IB_RATE_50_GBPS: 3422 return 5; 3423 case IB_RATE_400_GBPS: 3424 return 6; 3425 default: 3426 return rate + MLX5_STAT_RATE_OFFSET; 3427 } 3428 3429 return 0; 3430 } 3431 3432 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate) 3433 { 3434 u32 stat_rate_support; 3435 3436 if (rate == IB_RATE_PORT_CURRENT) 3437 return 0; 3438 3439 if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS) 3440 return -EINVAL; 3441 3442 stat_rate_support = MLX5_CAP_GEN(dev->mdev, stat_rate_support); 3443 while (rate != IB_RATE_PORT_CURRENT && 3444 !(1 << ib_to_mlx5_rate_map(rate) & stat_rate_support)) 3445 --rate; 3446 3447 return ib_to_mlx5_rate_map(rate); 3448 } 3449 3450 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev, 3451 struct mlx5_ib_sq *sq, u8 sl, 3452 struct ib_pd *pd) 3453 { 3454 void *in; 3455 void *tisc; 3456 int inlen; 3457 int err; 3458 3459 inlen = MLX5_ST_SZ_BYTES(modify_tis_in); 3460 in = kvzalloc(inlen, GFP_KERNEL); 3461 if (!in) 3462 return -ENOMEM; 3463 3464 MLX5_SET(modify_tis_in, in, bitmask.prio, 1); 3465 MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid); 3466 3467 tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx); 3468 MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1)); 3469 3470 err = mlx5_core_modify_tis(dev, sq->tisn, in); 3471 3472 kvfree(in); 3473 3474 return err; 3475 } 3476 3477 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev, 3478 struct mlx5_ib_sq *sq, u8 tx_affinity, 3479 struct ib_pd *pd) 3480 { 3481 void *in; 3482 void *tisc; 3483 int inlen; 3484 int err; 3485 3486 inlen = MLX5_ST_SZ_BYTES(modify_tis_in); 3487 in = kvzalloc(inlen, GFP_KERNEL); 3488 if (!in) 3489 return -ENOMEM; 3490 3491 MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1); 3492 MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid); 3493 3494 tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx); 3495 MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity); 3496 3497 err = mlx5_core_modify_tis(dev, sq->tisn, in); 3498 3499 kvfree(in); 3500 3501 return err; 3502 } 3503 3504 static void mlx5_set_path_udp_sport(void *path, const struct rdma_ah_attr *ah, 3505 u32 lqpn, u32 rqpn) 3506 3507 { 3508 u32 fl = ah->grh.flow_label; 3509 3510 if (!fl) 3511 fl = rdma_calc_flow_label(lqpn, rqpn); 3512 3513 MLX5_SET(ads, path, udp_sport, rdma_flow_label_to_udp_sport(fl)); 3514 } 3515 3516 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 3517 const struct rdma_ah_attr *ah, void *path, u8 port, 3518 int attr_mask, u32 path_flags, 3519 const struct ib_qp_attr *attr, bool alt) 3520 { 3521 const struct ib_global_route *grh = rdma_ah_read_grh(ah); 3522 int err; 3523 enum ib_gid_type gid_type; 3524 u8 ah_flags = rdma_ah_get_ah_flags(ah); 3525 u8 sl = rdma_ah_get_sl(ah); 3526 3527 if (attr_mask & IB_QP_PKEY_INDEX) 3528 MLX5_SET(ads, path, pkey_index, 3529 alt ? attr->alt_pkey_index : attr->pkey_index); 3530 3531 if (ah_flags & IB_AH_GRH) { 3532 const struct ib_port_immutable *immutable; 3533 3534 immutable = ib_port_immutable_read(&dev->ib_dev, port); 3535 if (grh->sgid_index >= immutable->gid_tbl_len) { 3536 pr_err("sgid_index (%u) too large. max is %d\n", 3537 grh->sgid_index, 3538 immutable->gid_tbl_len); 3539 return -EINVAL; 3540 } 3541 } 3542 3543 if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) { 3544 if (!(ah_flags & IB_AH_GRH)) 3545 return -EINVAL; 3546 3547 ether_addr_copy(MLX5_ADDR_OF(ads, path, rmac_47_32), 3548 ah->roce.dmac); 3549 if ((qp->type == IB_QPT_RC || 3550 qp->type == IB_QPT_UC || 3551 qp->type == IB_QPT_XRC_INI || 3552 qp->type == IB_QPT_XRC_TGT) && 3553 (grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) && 3554 (attr_mask & IB_QP_DEST_QPN)) 3555 mlx5_set_path_udp_sport(path, ah, 3556 qp->ibqp.qp_num, 3557 attr->dest_qp_num); 3558 MLX5_SET(ads, path, eth_prio, sl & 0x7); 3559 gid_type = ah->grh.sgid_attr->gid_type; 3560 if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) 3561 MLX5_SET(ads, path, dscp, grh->traffic_class >> 2); 3562 } else { 3563 MLX5_SET(ads, path, fl, !!(path_flags & MLX5_PATH_FLAG_FL)); 3564 MLX5_SET(ads, path, free_ar, 3565 !!(path_flags & MLX5_PATH_FLAG_FREE_AR)); 3566 MLX5_SET(ads, path, rlid, rdma_ah_get_dlid(ah)); 3567 MLX5_SET(ads, path, mlid, rdma_ah_get_path_bits(ah)); 3568 MLX5_SET(ads, path, grh, !!(ah_flags & IB_AH_GRH)); 3569 MLX5_SET(ads, path, sl, sl); 3570 } 3571 3572 if (ah_flags & IB_AH_GRH) { 3573 MLX5_SET(ads, path, src_addr_index, grh->sgid_index); 3574 MLX5_SET(ads, path, hop_limit, grh->hop_limit); 3575 MLX5_SET(ads, path, tclass, grh->traffic_class); 3576 MLX5_SET(ads, path, flow_label, grh->flow_label); 3577 memcpy(MLX5_ADDR_OF(ads, path, rgid_rip), grh->dgid.raw, 3578 sizeof(grh->dgid.raw)); 3579 } 3580 3581 err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah)); 3582 if (err < 0) 3583 return err; 3584 MLX5_SET(ads, path, stat_rate, err); 3585 MLX5_SET(ads, path, vhca_port_num, port); 3586 3587 if (attr_mask & IB_QP_TIMEOUT) 3588 MLX5_SET(ads, path, ack_timeout, 3589 alt ? attr->alt_timeout : attr->timeout); 3590 3591 if ((qp->type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt) 3592 return modify_raw_packet_eth_prio(dev->mdev, 3593 &qp->raw_packet_qp.sq, 3594 sl & 0xf, qp->ibqp.pd); 3595 3596 return 0; 3597 } 3598 3599 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = { 3600 [MLX5_QP_STATE_INIT] = { 3601 [MLX5_QP_STATE_INIT] = { 3602 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE | 3603 MLX5_QP_OPTPAR_RAE | 3604 MLX5_QP_OPTPAR_RWE | 3605 MLX5_QP_OPTPAR_PKEY_INDEX | 3606 MLX5_QP_OPTPAR_PRI_PORT | 3607 MLX5_QP_OPTPAR_LAG_TX_AFF, 3608 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE | 3609 MLX5_QP_OPTPAR_PKEY_INDEX | 3610 MLX5_QP_OPTPAR_PRI_PORT | 3611 MLX5_QP_OPTPAR_LAG_TX_AFF, 3612 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX | 3613 MLX5_QP_OPTPAR_Q_KEY | 3614 MLX5_QP_OPTPAR_PRI_PORT, 3615 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE | 3616 MLX5_QP_OPTPAR_RAE | 3617 MLX5_QP_OPTPAR_RWE | 3618 MLX5_QP_OPTPAR_PKEY_INDEX | 3619 MLX5_QP_OPTPAR_PRI_PORT | 3620 MLX5_QP_OPTPAR_LAG_TX_AFF, 3621 }, 3622 [MLX5_QP_STATE_RTR] = { 3623 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 3624 MLX5_QP_OPTPAR_RRE | 3625 MLX5_QP_OPTPAR_RAE | 3626 MLX5_QP_OPTPAR_RWE | 3627 MLX5_QP_OPTPAR_PKEY_INDEX | 3628 MLX5_QP_OPTPAR_LAG_TX_AFF, 3629 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 3630 MLX5_QP_OPTPAR_RWE | 3631 MLX5_QP_OPTPAR_PKEY_INDEX | 3632 MLX5_QP_OPTPAR_LAG_TX_AFF, 3633 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX | 3634 MLX5_QP_OPTPAR_Q_KEY, 3635 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX | 3636 MLX5_QP_OPTPAR_Q_KEY, 3637 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 3638 MLX5_QP_OPTPAR_RRE | 3639 MLX5_QP_OPTPAR_RAE | 3640 MLX5_QP_OPTPAR_RWE | 3641 MLX5_QP_OPTPAR_PKEY_INDEX | 3642 MLX5_QP_OPTPAR_LAG_TX_AFF, 3643 }, 3644 }, 3645 [MLX5_QP_STATE_RTR] = { 3646 [MLX5_QP_STATE_RTS] = { 3647 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 3648 MLX5_QP_OPTPAR_RRE | 3649 MLX5_QP_OPTPAR_RAE | 3650 MLX5_QP_OPTPAR_RWE | 3651 MLX5_QP_OPTPAR_PM_STATE | 3652 MLX5_QP_OPTPAR_RNR_TIMEOUT, 3653 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 3654 MLX5_QP_OPTPAR_RWE | 3655 MLX5_QP_OPTPAR_PM_STATE, 3656 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, 3657 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | 3658 MLX5_QP_OPTPAR_RRE | 3659 MLX5_QP_OPTPAR_RAE | 3660 MLX5_QP_OPTPAR_RWE | 3661 MLX5_QP_OPTPAR_PM_STATE | 3662 MLX5_QP_OPTPAR_RNR_TIMEOUT, 3663 }, 3664 }, 3665 [MLX5_QP_STATE_RTS] = { 3666 [MLX5_QP_STATE_RTS] = { 3667 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE | 3668 MLX5_QP_OPTPAR_RAE | 3669 MLX5_QP_OPTPAR_RWE | 3670 MLX5_QP_OPTPAR_RNR_TIMEOUT | 3671 MLX5_QP_OPTPAR_PM_STATE | 3672 MLX5_QP_OPTPAR_ALT_ADDR_PATH, 3673 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE | 3674 MLX5_QP_OPTPAR_PM_STATE | 3675 MLX5_QP_OPTPAR_ALT_ADDR_PATH, 3676 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY | 3677 MLX5_QP_OPTPAR_SRQN | 3678 MLX5_QP_OPTPAR_CQN_RCV, 3679 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE | 3680 MLX5_QP_OPTPAR_RAE | 3681 MLX5_QP_OPTPAR_RWE | 3682 MLX5_QP_OPTPAR_RNR_TIMEOUT | 3683 MLX5_QP_OPTPAR_PM_STATE | 3684 MLX5_QP_OPTPAR_ALT_ADDR_PATH, 3685 }, 3686 }, 3687 [MLX5_QP_STATE_SQER] = { 3688 [MLX5_QP_STATE_RTS] = { 3689 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, 3690 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY, 3691 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE, 3692 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT | 3693 MLX5_QP_OPTPAR_RWE | 3694 MLX5_QP_OPTPAR_RAE | 3695 MLX5_QP_OPTPAR_RRE, 3696 [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RNR_TIMEOUT | 3697 MLX5_QP_OPTPAR_RWE | 3698 MLX5_QP_OPTPAR_RAE | 3699 MLX5_QP_OPTPAR_RRE, 3700 }, 3701 }, 3702 [MLX5_QP_STATE_SQD] = { 3703 [MLX5_QP_STATE_RTS] = { 3704 [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, 3705 [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY, 3706 [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE, 3707 [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT | 3708 MLX5_QP_OPTPAR_RWE | 3709 MLX5_QP_OPTPAR_RAE | 3710 MLX5_QP_OPTPAR_RRE, 3711 }, 3712 }, 3713 }; 3714 3715 static int ib_nr_to_mlx5_nr(int ib_mask) 3716 { 3717 switch (ib_mask) { 3718 case IB_QP_STATE: 3719 return 0; 3720 case IB_QP_CUR_STATE: 3721 return 0; 3722 case IB_QP_EN_SQD_ASYNC_NOTIFY: 3723 return 0; 3724 case IB_QP_ACCESS_FLAGS: 3725 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE | 3726 MLX5_QP_OPTPAR_RAE; 3727 case IB_QP_PKEY_INDEX: 3728 return MLX5_QP_OPTPAR_PKEY_INDEX; 3729 case IB_QP_PORT: 3730 return MLX5_QP_OPTPAR_PRI_PORT; 3731 case IB_QP_QKEY: 3732 return MLX5_QP_OPTPAR_Q_KEY; 3733 case IB_QP_AV: 3734 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH | 3735 MLX5_QP_OPTPAR_PRI_PORT; 3736 case IB_QP_PATH_MTU: 3737 return 0; 3738 case IB_QP_TIMEOUT: 3739 return MLX5_QP_OPTPAR_ACK_TIMEOUT; 3740 case IB_QP_RETRY_CNT: 3741 return MLX5_QP_OPTPAR_RETRY_COUNT; 3742 case IB_QP_RNR_RETRY: 3743 return MLX5_QP_OPTPAR_RNR_RETRY; 3744 case IB_QP_RQ_PSN: 3745 return 0; 3746 case IB_QP_MAX_QP_RD_ATOMIC: 3747 return MLX5_QP_OPTPAR_SRA_MAX; 3748 case IB_QP_ALT_PATH: 3749 return MLX5_QP_OPTPAR_ALT_ADDR_PATH; 3750 case IB_QP_MIN_RNR_TIMER: 3751 return MLX5_QP_OPTPAR_RNR_TIMEOUT; 3752 case IB_QP_SQ_PSN: 3753 return 0; 3754 case IB_QP_MAX_DEST_RD_ATOMIC: 3755 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE | 3756 MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE; 3757 case IB_QP_PATH_MIG_STATE: 3758 return MLX5_QP_OPTPAR_PM_STATE; 3759 case IB_QP_CAP: 3760 return 0; 3761 case IB_QP_DEST_QPN: 3762 return 0; 3763 } 3764 return 0; 3765 } 3766 3767 static int ib_mask_to_mlx5_opt(int ib_mask) 3768 { 3769 int result = 0; 3770 int i; 3771 3772 for (i = 0; i < 8 * sizeof(int); i++) { 3773 if ((1 << i) & ib_mask) 3774 result |= ib_nr_to_mlx5_nr(1 << i); 3775 } 3776 3777 return result; 3778 } 3779 3780 static int modify_raw_packet_qp_rq( 3781 struct mlx5_ib_dev *dev, struct mlx5_ib_rq *rq, int new_state, 3782 const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd) 3783 { 3784 void *in; 3785 void *rqc; 3786 int inlen; 3787 int err; 3788 3789 inlen = MLX5_ST_SZ_BYTES(modify_rq_in); 3790 in = kvzalloc(inlen, GFP_KERNEL); 3791 if (!in) 3792 return -ENOMEM; 3793 3794 MLX5_SET(modify_rq_in, in, rq_state, rq->state); 3795 MLX5_SET(modify_rq_in, in, uid, to_mpd(pd)->uid); 3796 3797 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx); 3798 MLX5_SET(rqc, rqc, state, new_state); 3799 3800 if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) { 3801 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) { 3802 MLX5_SET64(modify_rq_in, in, modify_bitmask, 3803 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID); 3804 MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id); 3805 } else 3806 dev_info_once( 3807 &dev->ib_dev.dev, 3808 "RAW PACKET QP counters are not supported on current FW\n"); 3809 } 3810 3811 err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in); 3812 if (err) 3813 goto out; 3814 3815 rq->state = new_state; 3816 3817 out: 3818 kvfree(in); 3819 return err; 3820 } 3821 3822 static int modify_raw_packet_qp_sq( 3823 struct mlx5_core_dev *dev, struct mlx5_ib_sq *sq, int new_state, 3824 const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd) 3825 { 3826 struct mlx5_ib_qp *ibqp = sq->base.container_mibqp; 3827 struct mlx5_rate_limit old_rl = ibqp->rl; 3828 struct mlx5_rate_limit new_rl = old_rl; 3829 bool new_rate_added = false; 3830 u16 rl_index = 0; 3831 void *in; 3832 void *sqc; 3833 int inlen; 3834 int err; 3835 3836 inlen = MLX5_ST_SZ_BYTES(modify_sq_in); 3837 in = kvzalloc(inlen, GFP_KERNEL); 3838 if (!in) 3839 return -ENOMEM; 3840 3841 MLX5_SET(modify_sq_in, in, uid, to_mpd(pd)->uid); 3842 MLX5_SET(modify_sq_in, in, sq_state, sq->state); 3843 3844 sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx); 3845 MLX5_SET(sqc, sqc, state, new_state); 3846 3847 if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) { 3848 if (new_state != MLX5_SQC_STATE_RDY) 3849 pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n", 3850 __func__); 3851 else 3852 new_rl = raw_qp_param->rl; 3853 } 3854 3855 if (!mlx5_rl_are_equal(&old_rl, &new_rl)) { 3856 if (new_rl.rate) { 3857 err = mlx5_rl_add_rate(dev, &rl_index, &new_rl); 3858 if (err) { 3859 pr_err("Failed configuring rate limit(err %d): \ 3860 rate %u, max_burst_sz %u, typical_pkt_sz %u\n", 3861 err, new_rl.rate, new_rl.max_burst_sz, 3862 new_rl.typical_pkt_sz); 3863 3864 goto out; 3865 } 3866 new_rate_added = true; 3867 } 3868 3869 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1); 3870 /* index 0 means no limit */ 3871 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index); 3872 } 3873 3874 err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in); 3875 if (err) { 3876 /* Remove new rate from table if failed */ 3877 if (new_rate_added) 3878 mlx5_rl_remove_rate(dev, &new_rl); 3879 goto out; 3880 } 3881 3882 /* Only remove the old rate after new rate was set */ 3883 if ((old_rl.rate && !mlx5_rl_are_equal(&old_rl, &new_rl)) || 3884 (new_state != MLX5_SQC_STATE_RDY)) { 3885 mlx5_rl_remove_rate(dev, &old_rl); 3886 if (new_state != MLX5_SQC_STATE_RDY) 3887 memset(&new_rl, 0, sizeof(new_rl)); 3888 } 3889 3890 ibqp->rl = new_rl; 3891 sq->state = new_state; 3892 3893 out: 3894 kvfree(in); 3895 return err; 3896 } 3897 3898 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 3899 const struct mlx5_modify_raw_qp_param *raw_qp_param, 3900 u8 tx_affinity) 3901 { 3902 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp; 3903 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 3904 struct mlx5_ib_sq *sq = &raw_packet_qp->sq; 3905 int modify_rq = !!qp->rq.wqe_cnt; 3906 int modify_sq = !!qp->sq.wqe_cnt; 3907 int rq_state; 3908 int sq_state; 3909 int err; 3910 3911 switch (raw_qp_param->operation) { 3912 case MLX5_CMD_OP_RST2INIT_QP: 3913 rq_state = MLX5_RQC_STATE_RDY; 3914 sq_state = MLX5_SQC_STATE_RST; 3915 break; 3916 case MLX5_CMD_OP_2ERR_QP: 3917 rq_state = MLX5_RQC_STATE_ERR; 3918 sq_state = MLX5_SQC_STATE_ERR; 3919 break; 3920 case MLX5_CMD_OP_2RST_QP: 3921 rq_state = MLX5_RQC_STATE_RST; 3922 sq_state = MLX5_SQC_STATE_RST; 3923 break; 3924 case MLX5_CMD_OP_RTR2RTS_QP: 3925 case MLX5_CMD_OP_RTS2RTS_QP: 3926 if (raw_qp_param->set_mask & ~MLX5_RAW_QP_RATE_LIMIT) 3927 return -EINVAL; 3928 3929 modify_rq = 0; 3930 sq_state = MLX5_SQC_STATE_RDY; 3931 break; 3932 case MLX5_CMD_OP_INIT2INIT_QP: 3933 case MLX5_CMD_OP_INIT2RTR_QP: 3934 if (raw_qp_param->set_mask) 3935 return -EINVAL; 3936 else 3937 return 0; 3938 default: 3939 WARN_ON(1); 3940 return -EINVAL; 3941 } 3942 3943 if (modify_rq) { 3944 err = modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param, 3945 qp->ibqp.pd); 3946 if (err) 3947 return err; 3948 } 3949 3950 if (modify_sq) { 3951 struct mlx5_flow_handle *flow_rule; 3952 3953 if (tx_affinity) { 3954 err = modify_raw_packet_tx_affinity(dev->mdev, sq, 3955 tx_affinity, 3956 qp->ibqp.pd); 3957 if (err) 3958 return err; 3959 } 3960 3961 flow_rule = create_flow_rule_vport_sq(dev, sq, 3962 raw_qp_param->port); 3963 if (IS_ERR(flow_rule)) 3964 return PTR_ERR(flow_rule); 3965 3966 err = modify_raw_packet_qp_sq(dev->mdev, sq, sq_state, 3967 raw_qp_param, qp->ibqp.pd); 3968 if (err) { 3969 if (flow_rule) 3970 mlx5_del_flow_rules(flow_rule); 3971 return err; 3972 } 3973 3974 if (flow_rule) { 3975 destroy_flow_rule_vport_sq(sq); 3976 sq->flow_rule = flow_rule; 3977 } 3978 3979 return err; 3980 } 3981 3982 return 0; 3983 } 3984 3985 static unsigned int get_tx_affinity_rr(struct mlx5_ib_dev *dev, 3986 struct ib_udata *udata) 3987 { 3988 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context( 3989 udata, struct mlx5_ib_ucontext, ibucontext); 3990 u8 port_num = mlx5_core_native_port_num(dev->mdev) - 1; 3991 atomic_t *tx_port_affinity; 3992 3993 if (ucontext) 3994 tx_port_affinity = &ucontext->tx_port_affinity; 3995 else 3996 tx_port_affinity = &dev->port[port_num].roce.tx_port_affinity; 3997 3998 return (unsigned int)atomic_add_return(1, tx_port_affinity) % 3999 (dev->lag_active ? dev->lag_ports : MLX5_CAP_GEN(dev->mdev, num_lag_ports)) + 1; 4000 } 4001 4002 static bool qp_supports_affinity(struct mlx5_ib_qp *qp) 4003 { 4004 if ((qp->type == IB_QPT_RC) || (qp->type == IB_QPT_UD) || 4005 (qp->type == IB_QPT_UC) || (qp->type == IB_QPT_RAW_PACKET) || 4006 (qp->type == IB_QPT_XRC_INI) || (qp->type == IB_QPT_XRC_TGT) || 4007 (qp->type == MLX5_IB_QPT_DCI)) 4008 return true; 4009 return false; 4010 } 4011 4012 static unsigned int get_tx_affinity(struct ib_qp *qp, 4013 const struct ib_qp_attr *attr, 4014 int attr_mask, u8 init, 4015 struct ib_udata *udata) 4016 { 4017 struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context( 4018 udata, struct mlx5_ib_ucontext, ibucontext); 4019 struct mlx5_ib_dev *dev = to_mdev(qp->device); 4020 struct mlx5_ib_qp *mqp = to_mqp(qp); 4021 struct mlx5_ib_qp_base *qp_base; 4022 unsigned int tx_affinity; 4023 4024 if (!(mlx5_ib_lag_should_assign_affinity(dev) && 4025 qp_supports_affinity(mqp))) 4026 return 0; 4027 4028 if (mqp->flags & MLX5_IB_QP_CREATE_SQPN_QP1) 4029 tx_affinity = mqp->gsi_lag_port; 4030 else if (init) 4031 tx_affinity = get_tx_affinity_rr(dev, udata); 4032 else if ((attr_mask & IB_QP_AV) && attr->xmit_slave) 4033 tx_affinity = 4034 mlx5_lag_get_slave_port(dev->mdev, attr->xmit_slave); 4035 else 4036 return 0; 4037 4038 qp_base = &mqp->trans_qp.base; 4039 if (ucontext) 4040 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x ucontext %p\n", 4041 tx_affinity, qp_base->mqp.qpn, ucontext); 4042 else 4043 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x\n", 4044 tx_affinity, qp_base->mqp.qpn); 4045 return tx_affinity; 4046 } 4047 4048 static int __mlx5_ib_qp_set_raw_qp_counter(struct mlx5_ib_qp *qp, u32 set_id, 4049 struct mlx5_core_dev *mdev) 4050 { 4051 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp; 4052 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 4053 u32 in[MLX5_ST_SZ_DW(modify_rq_in)] = {}; 4054 void *rqc; 4055 4056 if (!qp->rq.wqe_cnt) 4057 return 0; 4058 4059 MLX5_SET(modify_rq_in, in, rq_state, rq->state); 4060 MLX5_SET(modify_rq_in, in, uid, to_mpd(qp->ibqp.pd)->uid); 4061 4062 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx); 4063 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY); 4064 4065 MLX5_SET64(modify_rq_in, in, modify_bitmask, 4066 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID); 4067 MLX5_SET(rqc, rqc, counter_set_id, set_id); 4068 4069 return mlx5_core_modify_rq(mdev, rq->base.mqp.qpn, in); 4070 } 4071 4072 static int __mlx5_ib_qp_set_counter(struct ib_qp *qp, 4073 struct rdma_counter *counter) 4074 { 4075 struct mlx5_ib_dev *dev = to_mdev(qp->device); 4076 u32 in[MLX5_ST_SZ_DW(rts2rts_qp_in)] = {}; 4077 struct mlx5_ib_qp *mqp = to_mqp(qp); 4078 struct mlx5_ib_qp_base *base; 4079 u32 set_id; 4080 u32 *qpc; 4081 4082 if (counter) 4083 set_id = counter->id; 4084 else 4085 set_id = mlx5_ib_get_counters_id(dev, mqp->port - 1); 4086 4087 if (mqp->type == IB_QPT_RAW_PACKET) 4088 return __mlx5_ib_qp_set_raw_qp_counter(mqp, set_id, dev->mdev); 4089 4090 base = &mqp->trans_qp.base; 4091 MLX5_SET(rts2rts_qp_in, in, opcode, MLX5_CMD_OP_RTS2RTS_QP); 4092 MLX5_SET(rts2rts_qp_in, in, qpn, base->mqp.qpn); 4093 MLX5_SET(rts2rts_qp_in, in, uid, base->mqp.uid); 4094 MLX5_SET(rts2rts_qp_in, in, opt_param_mask, 4095 MLX5_QP_OPTPAR_COUNTER_SET_ID); 4096 4097 qpc = MLX5_ADDR_OF(rts2rts_qp_in, in, qpc); 4098 MLX5_SET(qpc, qpc, counter_set_id, set_id); 4099 return mlx5_cmd_exec_in(dev->mdev, rts2rts_qp, in); 4100 } 4101 4102 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp, 4103 const struct ib_qp_attr *attr, int attr_mask, 4104 enum ib_qp_state cur_state, 4105 enum ib_qp_state new_state, 4106 const struct mlx5_ib_modify_qp *ucmd, 4107 struct mlx5_ib_modify_qp_resp *resp, 4108 struct ib_udata *udata) 4109 { 4110 static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = { 4111 [MLX5_QP_STATE_RST] = { 4112 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4113 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4114 [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_RST2INIT_QP, 4115 }, 4116 [MLX5_QP_STATE_INIT] = { 4117 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4118 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4119 [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_INIT2INIT_QP, 4120 [MLX5_QP_STATE_RTR] = MLX5_CMD_OP_INIT2RTR_QP, 4121 }, 4122 [MLX5_QP_STATE_RTR] = { 4123 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4124 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4125 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTR2RTS_QP, 4126 }, 4127 [MLX5_QP_STATE_RTS] = { 4128 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4129 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4130 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTS2RTS_QP, 4131 }, 4132 [MLX5_QP_STATE_SQD] = { 4133 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4134 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4135 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQD_RTS_QP, 4136 }, 4137 [MLX5_QP_STATE_SQER] = { 4138 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4139 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4140 [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQERR2RTS_QP, 4141 }, 4142 [MLX5_QP_STATE_ERR] = { 4143 [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP, 4144 [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP, 4145 } 4146 }; 4147 4148 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 4149 struct mlx5_ib_qp *qp = to_mqp(ibqp); 4150 struct mlx5_ib_qp_base *base = &qp->trans_qp.base; 4151 struct mlx5_ib_cq *send_cq, *recv_cq; 4152 struct mlx5_ib_pd *pd; 4153 enum mlx5_qp_state mlx5_cur, mlx5_new; 4154 void *qpc, *pri_path, *alt_path; 4155 enum mlx5_qp_optpar optpar = 0; 4156 u32 set_id = 0; 4157 int mlx5_st; 4158 int err; 4159 u16 op; 4160 u8 tx_affinity = 0; 4161 4162 mlx5_st = to_mlx5_st(qp->type); 4163 if (mlx5_st < 0) 4164 return -EINVAL; 4165 4166 qpc = kzalloc(MLX5_ST_SZ_BYTES(qpc), GFP_KERNEL); 4167 if (!qpc) 4168 return -ENOMEM; 4169 4170 pd = to_mpd(qp->ibqp.pd); 4171 MLX5_SET(qpc, qpc, st, mlx5_st); 4172 4173 if (!(attr_mask & IB_QP_PATH_MIG_STATE)) { 4174 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); 4175 } else { 4176 switch (attr->path_mig_state) { 4177 case IB_MIG_MIGRATED: 4178 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); 4179 break; 4180 case IB_MIG_REARM: 4181 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_REARM); 4182 break; 4183 case IB_MIG_ARMED: 4184 MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_ARMED); 4185 break; 4186 } 4187 } 4188 4189 tx_affinity = get_tx_affinity(ibqp, attr, attr_mask, 4190 cur_state == IB_QPS_RESET && 4191 new_state == IB_QPS_INIT, udata); 4192 4193 MLX5_SET(qpc, qpc, lag_tx_port_affinity, tx_affinity); 4194 if (tx_affinity && new_state == IB_QPS_RTR && 4195 MLX5_CAP_GEN(dev->mdev, init2_lag_tx_port_affinity)) 4196 optpar |= MLX5_QP_OPTPAR_LAG_TX_AFF; 4197 4198 if (is_sqp(qp->type)) { 4199 MLX5_SET(qpc, qpc, mtu, IB_MTU_256); 4200 MLX5_SET(qpc, qpc, log_msg_max, 8); 4201 } else if ((qp->type == IB_QPT_UD && 4202 !(qp->flags & IB_QP_CREATE_SOURCE_QPN)) || 4203 qp->type == MLX5_IB_QPT_REG_UMR) { 4204 MLX5_SET(qpc, qpc, mtu, IB_MTU_4096); 4205 MLX5_SET(qpc, qpc, log_msg_max, 12); 4206 } else if (attr_mask & IB_QP_PATH_MTU) { 4207 if (attr->path_mtu < IB_MTU_256 || 4208 attr->path_mtu > IB_MTU_4096) { 4209 mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu); 4210 err = -EINVAL; 4211 goto out; 4212 } 4213 MLX5_SET(qpc, qpc, mtu, attr->path_mtu); 4214 MLX5_SET(qpc, qpc, log_msg_max, 4215 MLX5_CAP_GEN(dev->mdev, log_max_msg)); 4216 } 4217 4218 if (attr_mask & IB_QP_DEST_QPN) 4219 MLX5_SET(qpc, qpc, remote_qpn, attr->dest_qp_num); 4220 4221 pri_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path); 4222 alt_path = MLX5_ADDR_OF(qpc, qpc, secondary_address_path); 4223 4224 if (attr_mask & IB_QP_PKEY_INDEX) 4225 MLX5_SET(ads, pri_path, pkey_index, attr->pkey_index); 4226 4227 /* todo implement counter_index functionality */ 4228 4229 if (is_sqp(qp->type)) 4230 MLX5_SET(ads, pri_path, vhca_port_num, qp->port); 4231 4232 if (attr_mask & IB_QP_PORT) 4233 MLX5_SET(ads, pri_path, vhca_port_num, attr->port_num); 4234 4235 if (attr_mask & IB_QP_AV) { 4236 err = mlx5_set_path(dev, qp, &attr->ah_attr, pri_path, 4237 attr_mask & IB_QP_PORT ? attr->port_num : 4238 qp->port, 4239 attr_mask, 0, attr, false); 4240 if (err) 4241 goto out; 4242 } 4243 4244 if (attr_mask & IB_QP_TIMEOUT) 4245 MLX5_SET(ads, pri_path, ack_timeout, attr->timeout); 4246 4247 if (attr_mask & IB_QP_ALT_PATH) { 4248 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr, alt_path, 4249 attr->alt_port_num, 4250 attr_mask | IB_QP_PKEY_INDEX | 4251 IB_QP_TIMEOUT, 4252 0, attr, true); 4253 if (err) 4254 goto out; 4255 } 4256 4257 get_cqs(qp->type, qp->ibqp.send_cq, qp->ibqp.recv_cq, 4258 &send_cq, &recv_cq); 4259 4260 MLX5_SET(qpc, qpc, pd, pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn); 4261 if (send_cq) 4262 MLX5_SET(qpc, qpc, cqn_snd, send_cq->mcq.cqn); 4263 if (recv_cq) 4264 MLX5_SET(qpc, qpc, cqn_rcv, recv_cq->mcq.cqn); 4265 4266 MLX5_SET(qpc, qpc, log_ack_req_freq, MLX5_IB_ACK_REQ_FREQ); 4267 4268 if (attr_mask & IB_QP_RNR_RETRY) 4269 MLX5_SET(qpc, qpc, rnr_retry, attr->rnr_retry); 4270 4271 if (attr_mask & IB_QP_RETRY_CNT) 4272 MLX5_SET(qpc, qpc, retry_count, attr->retry_cnt); 4273 4274 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && attr->max_rd_atomic) 4275 MLX5_SET(qpc, qpc, log_sra_max, ilog2(attr->max_rd_atomic)); 4276 4277 if (attr_mask & IB_QP_SQ_PSN) 4278 MLX5_SET(qpc, qpc, next_send_psn, attr->sq_psn); 4279 4280 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && attr->max_dest_rd_atomic) 4281 MLX5_SET(qpc, qpc, log_rra_max, 4282 ilog2(attr->max_dest_rd_atomic)); 4283 4284 if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) { 4285 err = set_qpc_atomic_flags(qp, attr, attr_mask, qpc); 4286 if (err) 4287 goto out; 4288 } 4289 4290 if (attr_mask & IB_QP_MIN_RNR_TIMER) 4291 MLX5_SET(qpc, qpc, min_rnr_nak, attr->min_rnr_timer); 4292 4293 if (attr_mask & IB_QP_RQ_PSN) 4294 MLX5_SET(qpc, qpc, next_rcv_psn, attr->rq_psn); 4295 4296 if (attr_mask & IB_QP_QKEY) 4297 MLX5_SET(qpc, qpc, q_key, attr->qkey); 4298 4299 if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) 4300 MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma); 4301 4302 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { 4303 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num : 4304 qp->port) - 1; 4305 4306 /* Underlay port should be used - index 0 function per port */ 4307 if (qp->flags & IB_QP_CREATE_SOURCE_QPN) 4308 port_num = 0; 4309 4310 if (ibqp->counter) 4311 set_id = ibqp->counter->id; 4312 else 4313 set_id = mlx5_ib_get_counters_id(dev, port_num); 4314 MLX5_SET(qpc, qpc, counter_set_id, set_id); 4315 } 4316 4317 if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) 4318 MLX5_SET(qpc, qpc, rlky, 1); 4319 4320 if (qp->flags & MLX5_IB_QP_CREATE_SQPN_QP1) 4321 MLX5_SET(qpc, qpc, deth_sqpn, 1); 4322 4323 mlx5_cur = to_mlx5_state(cur_state); 4324 mlx5_new = to_mlx5_state(new_state); 4325 4326 if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE || 4327 !optab[mlx5_cur][mlx5_new]) { 4328 err = -EINVAL; 4329 goto out; 4330 } 4331 4332 op = optab[mlx5_cur][mlx5_new]; 4333 optpar |= ib_mask_to_mlx5_opt(attr_mask); 4334 optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st]; 4335 4336 if (qp->type == IB_QPT_RAW_PACKET || 4337 qp->flags & IB_QP_CREATE_SOURCE_QPN) { 4338 struct mlx5_modify_raw_qp_param raw_qp_param = {}; 4339 4340 raw_qp_param.operation = op; 4341 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { 4342 raw_qp_param.rq_q_ctr_id = set_id; 4343 raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID; 4344 } 4345 4346 if (attr_mask & IB_QP_PORT) 4347 raw_qp_param.port = attr->port_num; 4348 4349 if (attr_mask & IB_QP_RATE_LIMIT) { 4350 raw_qp_param.rl.rate = attr->rate_limit; 4351 4352 if (ucmd->burst_info.max_burst_sz) { 4353 if (attr->rate_limit && 4354 MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) { 4355 raw_qp_param.rl.max_burst_sz = 4356 ucmd->burst_info.max_burst_sz; 4357 } else { 4358 err = -EINVAL; 4359 goto out; 4360 } 4361 } 4362 4363 if (ucmd->burst_info.typical_pkt_sz) { 4364 if (attr->rate_limit && 4365 MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) { 4366 raw_qp_param.rl.typical_pkt_sz = 4367 ucmd->burst_info.typical_pkt_sz; 4368 } else { 4369 err = -EINVAL; 4370 goto out; 4371 } 4372 } 4373 4374 raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT; 4375 } 4376 4377 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity); 4378 } else { 4379 if (udata) { 4380 /* For the kernel flows, the resp will stay zero */ 4381 resp->ece_options = 4382 MLX5_CAP_GEN(dev->mdev, ece_support) ? 4383 ucmd->ece_options : 0; 4384 resp->response_length = sizeof(*resp); 4385 } 4386 err = mlx5_core_qp_modify(dev, op, optpar, qpc, &base->mqp, 4387 &resp->ece_options); 4388 } 4389 4390 if (err) 4391 goto out; 4392 4393 qp->state = new_state; 4394 4395 if (attr_mask & IB_QP_ACCESS_FLAGS) 4396 qp->trans_qp.atomic_rd_en = attr->qp_access_flags; 4397 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) 4398 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic; 4399 if (attr_mask & IB_QP_PORT) 4400 qp->port = attr->port_num; 4401 if (attr_mask & IB_QP_ALT_PATH) 4402 qp->trans_qp.alt_port = attr->alt_port_num; 4403 4404 /* 4405 * If we moved a kernel QP to RESET, clean up all old CQ 4406 * entries and reinitialize the QP. 4407 */ 4408 if (new_state == IB_QPS_RESET && 4409 !ibqp->uobject && qp->type != IB_QPT_XRC_TGT) { 4410 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn, 4411 ibqp->srq ? to_msrq(ibqp->srq) : NULL); 4412 if (send_cq != recv_cq) 4413 mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL); 4414 4415 qp->rq.head = 0; 4416 qp->rq.tail = 0; 4417 qp->sq.head = 0; 4418 qp->sq.tail = 0; 4419 qp->sq.cur_post = 0; 4420 if (qp->sq.wqe_cnt) 4421 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0); 4422 qp->sq.last_poll = 0; 4423 qp->db.db[MLX5_RCV_DBR] = 0; 4424 qp->db.db[MLX5_SND_DBR] = 0; 4425 } 4426 4427 if ((new_state == IB_QPS_RTS) && qp->counter_pending) { 4428 err = __mlx5_ib_qp_set_counter(ibqp, ibqp->counter); 4429 if (!err) 4430 qp->counter_pending = 0; 4431 } 4432 4433 out: 4434 kfree(qpc); 4435 return err; 4436 } 4437 4438 static inline bool is_valid_mask(int mask, int req, int opt) 4439 { 4440 if ((mask & req) != req) 4441 return false; 4442 4443 if (mask & ~(req | opt)) 4444 return false; 4445 4446 return true; 4447 } 4448 4449 /* check valid transition for driver QP types 4450 * for now the only QP type that this function supports is DCI 4451 */ 4452 static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state, 4453 enum ib_qp_attr_mask attr_mask) 4454 { 4455 int req = IB_QP_STATE; 4456 int opt = 0; 4457 4458 if (new_state == IB_QPS_RESET) { 4459 return is_valid_mask(attr_mask, req, opt); 4460 } else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { 4461 req |= IB_QP_PKEY_INDEX | IB_QP_PORT; 4462 return is_valid_mask(attr_mask, req, opt); 4463 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) { 4464 opt = IB_QP_PKEY_INDEX | IB_QP_PORT; 4465 return is_valid_mask(attr_mask, req, opt); 4466 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) { 4467 req |= IB_QP_PATH_MTU; 4468 opt = IB_QP_PKEY_INDEX | IB_QP_AV; 4469 return is_valid_mask(attr_mask, req, opt); 4470 } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) { 4471 req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY | 4472 IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN; 4473 opt = IB_QP_MIN_RNR_TIMER; 4474 return is_valid_mask(attr_mask, req, opt); 4475 } else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) { 4476 opt = IB_QP_MIN_RNR_TIMER; 4477 return is_valid_mask(attr_mask, req, opt); 4478 } else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) { 4479 return is_valid_mask(attr_mask, req, opt); 4480 } 4481 return false; 4482 } 4483 4484 /* mlx5_ib_modify_dct: modify a DCT QP 4485 * valid transitions are: 4486 * RESET to INIT: must set access_flags, pkey_index and port 4487 * INIT to RTR : must set min_rnr_timer, tclass, flow_label, 4488 * mtu, gid_index and hop_limit 4489 * Other transitions and attributes are illegal 4490 */ 4491 static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr, 4492 int attr_mask, struct mlx5_ib_modify_qp *ucmd, 4493 struct ib_udata *udata) 4494 { 4495 struct mlx5_ib_qp *qp = to_mqp(ibqp); 4496 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 4497 enum ib_qp_state cur_state, new_state; 4498 int required = IB_QP_STATE; 4499 void *dctc; 4500 int err; 4501 4502 if (!(attr_mask & IB_QP_STATE)) 4503 return -EINVAL; 4504 4505 cur_state = qp->state; 4506 new_state = attr->qp_state; 4507 4508 dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry); 4509 if (MLX5_CAP_GEN(dev->mdev, ece_support) && ucmd->ece_options) 4510 /* 4511 * DCT doesn't initialize QP till modify command is executed, 4512 * so we need to overwrite previously set ECE field if user 4513 * provided any value except zero, which means not set/not 4514 * valid. 4515 */ 4516 MLX5_SET(dctc, dctc, ece, ucmd->ece_options); 4517 4518 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) { 4519 u16 set_id; 4520 4521 required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT; 4522 if (!is_valid_mask(attr_mask, required, 0)) 4523 return -EINVAL; 4524 4525 if (attr->port_num == 0 || 4526 attr->port_num > dev->num_ports) { 4527 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n", 4528 attr->port_num, dev->num_ports); 4529 return -EINVAL; 4530 } 4531 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) 4532 MLX5_SET(dctc, dctc, rre, 1); 4533 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) 4534 MLX5_SET(dctc, dctc, rwe, 1); 4535 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) { 4536 int atomic_mode; 4537 4538 atomic_mode = get_atomic_mode(dev, MLX5_IB_QPT_DCT); 4539 if (atomic_mode < 0) 4540 return -EOPNOTSUPP; 4541 4542 MLX5_SET(dctc, dctc, atomic_mode, atomic_mode); 4543 MLX5_SET(dctc, dctc, rae, 1); 4544 } 4545 MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index); 4546 if (mlx5_lag_is_active(dev->mdev)) 4547 MLX5_SET(dctc, dctc, port, 4548 get_tx_affinity_rr(dev, udata)); 4549 else 4550 MLX5_SET(dctc, dctc, port, attr->port_num); 4551 4552 set_id = mlx5_ib_get_counters_id(dev, attr->port_num - 1); 4553 MLX5_SET(dctc, dctc, counter_set_id, set_id); 4554 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) { 4555 struct mlx5_ib_modify_qp_resp resp = {}; 4556 u32 out[MLX5_ST_SZ_DW(create_dct_out)] = {}; 4557 u32 min_resp_len = offsetofend(typeof(resp), dctn); 4558 4559 if (udata->outlen < min_resp_len) 4560 return -EINVAL; 4561 /* 4562 * If we don't have enough space for the ECE options, 4563 * simply indicate it with resp.response_length. 4564 */ 4565 resp.response_length = (udata->outlen < sizeof(resp)) ? 4566 min_resp_len : 4567 sizeof(resp); 4568 4569 required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU; 4570 if (!is_valid_mask(attr_mask, required, 0)) 4571 return -EINVAL; 4572 MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer); 4573 MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class); 4574 MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label); 4575 MLX5_SET(dctc, dctc, mtu, attr->path_mtu); 4576 MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index); 4577 MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit); 4578 if (attr->ah_attr.type == RDMA_AH_ATTR_TYPE_ROCE) 4579 MLX5_SET(dctc, dctc, eth_prio, attr->ah_attr.sl & 0x7); 4580 4581 err = mlx5_core_create_dct(dev, &qp->dct.mdct, qp->dct.in, 4582 MLX5_ST_SZ_BYTES(create_dct_in), out, 4583 sizeof(out)); 4584 err = mlx5_cmd_check(dev->mdev, err, qp->dct.in, out); 4585 if (err) 4586 return err; 4587 resp.dctn = qp->dct.mdct.mqp.qpn; 4588 if (MLX5_CAP_GEN(dev->mdev, ece_support)) 4589 resp.ece_options = MLX5_GET(create_dct_out, out, ece); 4590 err = ib_copy_to_udata(udata, &resp, resp.response_length); 4591 if (err) { 4592 mlx5_core_destroy_dct(dev, &qp->dct.mdct); 4593 return err; 4594 } 4595 } else { 4596 mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state); 4597 return -EINVAL; 4598 } 4599 4600 qp->state = new_state; 4601 return 0; 4602 } 4603 4604 static bool mlx5_ib_modify_qp_allowed(struct mlx5_ib_dev *dev, 4605 struct mlx5_ib_qp *qp) 4606 { 4607 if (dev->profile != &raw_eth_profile) 4608 return true; 4609 4610 if (qp->type == IB_QPT_RAW_PACKET || qp->type == MLX5_IB_QPT_REG_UMR) 4611 return true; 4612 4613 /* Internal QP used for wc testing, with NOPs in wq */ 4614 if (qp->flags & MLX5_IB_QP_CREATE_WC_TEST) 4615 return true; 4616 4617 return false; 4618 } 4619 4620 static int validate_rd_atomic(struct mlx5_ib_dev *dev, struct ib_qp_attr *attr, 4621 int attr_mask, enum ib_qp_type qp_type) 4622 { 4623 int log_max_ra_res; 4624 int log_max_ra_req; 4625 4626 if (qp_type == MLX5_IB_QPT_DCI) { 4627 log_max_ra_res = 1 << MLX5_CAP_GEN(dev->mdev, 4628 log_max_ra_res_dc); 4629 log_max_ra_req = 1 << MLX5_CAP_GEN(dev->mdev, 4630 log_max_ra_req_dc); 4631 } else { 4632 log_max_ra_res = 1 << MLX5_CAP_GEN(dev->mdev, 4633 log_max_ra_res_qp); 4634 log_max_ra_req = 1 << MLX5_CAP_GEN(dev->mdev, 4635 log_max_ra_req_qp); 4636 } 4637 4638 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && 4639 attr->max_rd_atomic > log_max_ra_res) { 4640 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n", 4641 attr->max_rd_atomic); 4642 return false; 4643 } 4644 4645 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && 4646 attr->max_dest_rd_atomic > log_max_ra_req) { 4647 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n", 4648 attr->max_dest_rd_atomic); 4649 return false; 4650 } 4651 return true; 4652 } 4653 4654 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 4655 int attr_mask, struct ib_udata *udata) 4656 { 4657 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 4658 struct mlx5_ib_modify_qp_resp resp = {}; 4659 struct mlx5_ib_qp *qp = to_mqp(ibqp); 4660 struct mlx5_ib_modify_qp ucmd = {}; 4661 enum ib_qp_type qp_type; 4662 enum ib_qp_state cur_state, new_state; 4663 int err = -EINVAL; 4664 4665 if (!mlx5_ib_modify_qp_allowed(dev, qp)) 4666 return -EOPNOTSUPP; 4667 4668 if (attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT)) 4669 return -EOPNOTSUPP; 4670 4671 if (ibqp->rwq_ind_tbl) 4672 return -ENOSYS; 4673 4674 if (udata && udata->inlen) { 4675 if (udata->inlen < offsetofend(typeof(ucmd), ece_options)) 4676 return -EINVAL; 4677 4678 if (udata->inlen > sizeof(ucmd) && 4679 !ib_is_udata_cleared(udata, sizeof(ucmd), 4680 udata->inlen - sizeof(ucmd))) 4681 return -EOPNOTSUPP; 4682 4683 if (ib_copy_from_udata(&ucmd, udata, 4684 min(udata->inlen, sizeof(ucmd)))) 4685 return -EFAULT; 4686 4687 if (ucmd.comp_mask || 4688 memchr_inv(&ucmd.burst_info.reserved, 0, 4689 sizeof(ucmd.burst_info.reserved))) 4690 return -EOPNOTSUPP; 4691 4692 } 4693 4694 if (qp->type == IB_QPT_GSI) 4695 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask); 4696 4697 qp_type = (qp->type == MLX5_IB_QPT_HW_GSI) ? IB_QPT_GSI : qp->type; 4698 4699 if (qp_type == MLX5_IB_QPT_DCT) 4700 return mlx5_ib_modify_dct(ibqp, attr, attr_mask, &ucmd, udata); 4701 4702 mutex_lock(&qp->mutex); 4703 4704 cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; 4705 new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; 4706 4707 if (qp->flags & IB_QP_CREATE_SOURCE_QPN) { 4708 if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) { 4709 mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n", 4710 attr_mask); 4711 goto out; 4712 } 4713 } else if (qp_type != MLX5_IB_QPT_REG_UMR && 4714 qp_type != MLX5_IB_QPT_DCI && 4715 !ib_modify_qp_is_ok(cur_state, new_state, qp_type, 4716 attr_mask)) { 4717 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n", 4718 cur_state, new_state, qp->type, attr_mask); 4719 goto out; 4720 } else if (qp_type == MLX5_IB_QPT_DCI && 4721 !modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) { 4722 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n", 4723 cur_state, new_state, qp_type, attr_mask); 4724 goto out; 4725 } 4726 4727 if ((attr_mask & IB_QP_PORT) && 4728 (attr->port_num == 0 || 4729 attr->port_num > dev->num_ports)) { 4730 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n", 4731 attr->port_num, dev->num_ports); 4732 goto out; 4733 } 4734 4735 if ((attr_mask & IB_QP_PKEY_INDEX) && 4736 attr->pkey_index >= dev->pkey_table_len) { 4737 mlx5_ib_dbg(dev, "invalid pkey index %d\n", attr->pkey_index); 4738 goto out; 4739 } 4740 4741 if (!validate_rd_atomic(dev, attr, attr_mask, qp_type)) 4742 goto out; 4743 4744 if (cur_state == new_state && cur_state == IB_QPS_RESET) { 4745 err = 0; 4746 goto out; 4747 } 4748 4749 err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, 4750 new_state, &ucmd, &resp, udata); 4751 4752 /* resp.response_length is set in ECE supported flows only */ 4753 if (!err && resp.response_length && 4754 udata->outlen >= resp.response_length) 4755 /* Return -EFAULT to the user and expect him to destroy QP. */ 4756 err = ib_copy_to_udata(udata, &resp, resp.response_length); 4757 4758 out: 4759 mutex_unlock(&qp->mutex); 4760 return err; 4761 } 4762 4763 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state) 4764 { 4765 switch (mlx5_state) { 4766 case MLX5_QP_STATE_RST: return IB_QPS_RESET; 4767 case MLX5_QP_STATE_INIT: return IB_QPS_INIT; 4768 case MLX5_QP_STATE_RTR: return IB_QPS_RTR; 4769 case MLX5_QP_STATE_RTS: return IB_QPS_RTS; 4770 case MLX5_QP_STATE_SQ_DRAINING: 4771 case MLX5_QP_STATE_SQD: return IB_QPS_SQD; 4772 case MLX5_QP_STATE_SQER: return IB_QPS_SQE; 4773 case MLX5_QP_STATE_ERR: return IB_QPS_ERR; 4774 default: return -1; 4775 } 4776 } 4777 4778 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state) 4779 { 4780 switch (mlx5_mig_state) { 4781 case MLX5_QP_PM_ARMED: return IB_MIG_ARMED; 4782 case MLX5_QP_PM_REARM: return IB_MIG_REARM; 4783 case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED; 4784 default: return -1; 4785 } 4786 } 4787 4788 static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev, 4789 struct rdma_ah_attr *ah_attr, void *path) 4790 { 4791 int port = MLX5_GET(ads, path, vhca_port_num); 4792 int static_rate; 4793 4794 memset(ah_attr, 0, sizeof(*ah_attr)); 4795 4796 if (!port || port > ibdev->num_ports) 4797 return; 4798 4799 ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, port); 4800 4801 rdma_ah_set_port_num(ah_attr, port); 4802 rdma_ah_set_sl(ah_attr, MLX5_GET(ads, path, sl)); 4803 4804 rdma_ah_set_dlid(ah_attr, MLX5_GET(ads, path, rlid)); 4805 rdma_ah_set_path_bits(ah_attr, MLX5_GET(ads, path, mlid)); 4806 4807 static_rate = MLX5_GET(ads, path, stat_rate); 4808 rdma_ah_set_static_rate(ah_attr, mlx5_to_ib_rate_map(static_rate)); 4809 if (MLX5_GET(ads, path, grh) || 4810 ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) { 4811 rdma_ah_set_grh(ah_attr, NULL, MLX5_GET(ads, path, flow_label), 4812 MLX5_GET(ads, path, src_addr_index), 4813 MLX5_GET(ads, path, hop_limit), 4814 MLX5_GET(ads, path, tclass)); 4815 rdma_ah_set_dgid_raw(ah_attr, MLX5_ADDR_OF(ads, path, rgid_rip)); 4816 } 4817 } 4818 4819 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev, 4820 struct mlx5_ib_sq *sq, 4821 u8 *sq_state) 4822 { 4823 int err; 4824 4825 err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state); 4826 if (err) 4827 goto out; 4828 sq->state = *sq_state; 4829 4830 out: 4831 return err; 4832 } 4833 4834 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev, 4835 struct mlx5_ib_rq *rq, 4836 u8 *rq_state) 4837 { 4838 void *out; 4839 void *rqc; 4840 int inlen; 4841 int err; 4842 4843 inlen = MLX5_ST_SZ_BYTES(query_rq_out); 4844 out = kvzalloc(inlen, GFP_KERNEL); 4845 if (!out) 4846 return -ENOMEM; 4847 4848 err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out); 4849 if (err) 4850 goto out; 4851 4852 rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context); 4853 *rq_state = MLX5_GET(rqc, rqc, state); 4854 rq->state = *rq_state; 4855 4856 out: 4857 kvfree(out); 4858 return err; 4859 } 4860 4861 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state, 4862 struct mlx5_ib_qp *qp, u8 *qp_state) 4863 { 4864 static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = { 4865 [MLX5_RQC_STATE_RST] = { 4866 [MLX5_SQC_STATE_RST] = IB_QPS_RESET, 4867 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD, 4868 [MLX5_SQC_STATE_ERR] = MLX5_QP_STATE_BAD, 4869 [MLX5_SQ_STATE_NA] = IB_QPS_RESET, 4870 }, 4871 [MLX5_RQC_STATE_RDY] = { 4872 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE, 4873 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE, 4874 [MLX5_SQC_STATE_ERR] = IB_QPS_SQE, 4875 [MLX5_SQ_STATE_NA] = MLX5_QP_STATE, 4876 }, 4877 [MLX5_RQC_STATE_ERR] = { 4878 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE_BAD, 4879 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE_BAD, 4880 [MLX5_SQC_STATE_ERR] = IB_QPS_ERR, 4881 [MLX5_SQ_STATE_NA] = IB_QPS_ERR, 4882 }, 4883 [MLX5_RQ_STATE_NA] = { 4884 [MLX5_SQC_STATE_RST] = MLX5_QP_STATE, 4885 [MLX5_SQC_STATE_RDY] = MLX5_QP_STATE, 4886 [MLX5_SQC_STATE_ERR] = MLX5_QP_STATE, 4887 [MLX5_SQ_STATE_NA] = MLX5_QP_STATE_BAD, 4888 }, 4889 }; 4890 4891 *qp_state = sqrq_trans[rq_state][sq_state]; 4892 4893 if (*qp_state == MLX5_QP_STATE_BAD) { 4894 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x", 4895 qp->raw_packet_qp.sq.base.mqp.qpn, sq_state, 4896 qp->raw_packet_qp.rq.base.mqp.qpn, rq_state); 4897 return -EINVAL; 4898 } 4899 4900 if (*qp_state == MLX5_QP_STATE) 4901 *qp_state = qp->state; 4902 4903 return 0; 4904 } 4905 4906 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev, 4907 struct mlx5_ib_qp *qp, 4908 u8 *raw_packet_qp_state) 4909 { 4910 struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp; 4911 struct mlx5_ib_sq *sq = &raw_packet_qp->sq; 4912 struct mlx5_ib_rq *rq = &raw_packet_qp->rq; 4913 int err; 4914 u8 sq_state = MLX5_SQ_STATE_NA; 4915 u8 rq_state = MLX5_RQ_STATE_NA; 4916 4917 if (qp->sq.wqe_cnt) { 4918 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state); 4919 if (err) 4920 return err; 4921 } 4922 4923 if (qp->rq.wqe_cnt) { 4924 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state); 4925 if (err) 4926 return err; 4927 } 4928 4929 return sqrq_state_to_qp_state(sq_state, rq_state, qp, 4930 raw_packet_qp_state); 4931 } 4932 4933 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, 4934 struct ib_qp_attr *qp_attr) 4935 { 4936 int outlen = MLX5_ST_SZ_BYTES(query_qp_out); 4937 void *qpc, *pri_path, *alt_path; 4938 u32 *outb; 4939 int err; 4940 4941 outb = kzalloc(outlen, GFP_KERNEL); 4942 if (!outb) 4943 return -ENOMEM; 4944 4945 err = mlx5_core_qp_query(dev, &qp->trans_qp.base.mqp, outb, outlen, 4946 false); 4947 if (err) 4948 goto out; 4949 4950 qpc = MLX5_ADDR_OF(query_qp_out, outb, qpc); 4951 4952 qp->state = to_ib_qp_state(MLX5_GET(qpc, qpc, state)); 4953 if (MLX5_GET(qpc, qpc, state) == MLX5_QP_STATE_SQ_DRAINING) 4954 qp_attr->sq_draining = 1; 4955 4956 qp_attr->path_mtu = MLX5_GET(qpc, qpc, mtu); 4957 qp_attr->path_mig_state = to_ib_mig_state(MLX5_GET(qpc, qpc, pm_state)); 4958 qp_attr->qkey = MLX5_GET(qpc, qpc, q_key); 4959 qp_attr->rq_psn = MLX5_GET(qpc, qpc, next_rcv_psn); 4960 qp_attr->sq_psn = MLX5_GET(qpc, qpc, next_send_psn); 4961 qp_attr->dest_qp_num = MLX5_GET(qpc, qpc, remote_qpn); 4962 4963 if (MLX5_GET(qpc, qpc, rre)) 4964 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_READ; 4965 if (MLX5_GET(qpc, qpc, rwe)) 4966 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_WRITE; 4967 if (MLX5_GET(qpc, qpc, rae)) 4968 qp_attr->qp_access_flags |= IB_ACCESS_REMOTE_ATOMIC; 4969 4970 qp_attr->max_rd_atomic = 1 << MLX5_GET(qpc, qpc, log_sra_max); 4971 qp_attr->max_dest_rd_atomic = 1 << MLX5_GET(qpc, qpc, log_rra_max); 4972 qp_attr->min_rnr_timer = MLX5_GET(qpc, qpc, min_rnr_nak); 4973 qp_attr->retry_cnt = MLX5_GET(qpc, qpc, retry_count); 4974 qp_attr->rnr_retry = MLX5_GET(qpc, qpc, rnr_retry); 4975 4976 pri_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path); 4977 alt_path = MLX5_ADDR_OF(qpc, qpc, secondary_address_path); 4978 4979 if (qp->type == IB_QPT_RC || qp->type == IB_QPT_UC || 4980 qp->type == IB_QPT_XRC_INI || qp->type == IB_QPT_XRC_TGT) { 4981 to_rdma_ah_attr(dev, &qp_attr->ah_attr, pri_path); 4982 to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, alt_path); 4983 qp_attr->alt_pkey_index = MLX5_GET(ads, alt_path, pkey_index); 4984 qp_attr->alt_port_num = MLX5_GET(ads, alt_path, vhca_port_num); 4985 } 4986 4987 qp_attr->pkey_index = MLX5_GET(ads, pri_path, pkey_index); 4988 qp_attr->port_num = MLX5_GET(ads, pri_path, vhca_port_num); 4989 qp_attr->timeout = MLX5_GET(ads, pri_path, ack_timeout); 4990 qp_attr->alt_timeout = MLX5_GET(ads, alt_path, ack_timeout); 4991 4992 out: 4993 kfree(outb); 4994 return err; 4995 } 4996 4997 static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp, 4998 struct ib_qp_attr *qp_attr, int qp_attr_mask, 4999 struct ib_qp_init_attr *qp_init_attr) 5000 { 5001 struct mlx5_core_dct *dct = &mqp->dct.mdct; 5002 u32 *out; 5003 u32 access_flags = 0; 5004 int outlen = MLX5_ST_SZ_BYTES(query_dct_out); 5005 void *dctc; 5006 int err; 5007 int supported_mask = IB_QP_STATE | 5008 IB_QP_ACCESS_FLAGS | 5009 IB_QP_PORT | 5010 IB_QP_MIN_RNR_TIMER | 5011 IB_QP_AV | 5012 IB_QP_PATH_MTU | 5013 IB_QP_PKEY_INDEX; 5014 5015 if (qp_attr_mask & ~supported_mask) 5016 return -EINVAL; 5017 if (mqp->state != IB_QPS_RTR) 5018 return -EINVAL; 5019 5020 out = kzalloc(outlen, GFP_KERNEL); 5021 if (!out) 5022 return -ENOMEM; 5023 5024 err = mlx5_core_dct_query(dev, dct, out, outlen); 5025 if (err) 5026 goto out; 5027 5028 dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry); 5029 5030 if (qp_attr_mask & IB_QP_STATE) 5031 qp_attr->qp_state = IB_QPS_RTR; 5032 5033 if (qp_attr_mask & IB_QP_ACCESS_FLAGS) { 5034 if (MLX5_GET(dctc, dctc, rre)) 5035 access_flags |= IB_ACCESS_REMOTE_READ; 5036 if (MLX5_GET(dctc, dctc, rwe)) 5037 access_flags |= IB_ACCESS_REMOTE_WRITE; 5038 if (MLX5_GET(dctc, dctc, rae)) 5039 access_flags |= IB_ACCESS_REMOTE_ATOMIC; 5040 qp_attr->qp_access_flags = access_flags; 5041 } 5042 5043 if (qp_attr_mask & IB_QP_PORT) 5044 qp_attr->port_num = MLX5_GET(dctc, dctc, port); 5045 if (qp_attr_mask & IB_QP_MIN_RNR_TIMER) 5046 qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak); 5047 if (qp_attr_mask & IB_QP_AV) { 5048 qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass); 5049 qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label); 5050 qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index); 5051 qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit); 5052 } 5053 if (qp_attr_mask & IB_QP_PATH_MTU) 5054 qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu); 5055 if (qp_attr_mask & IB_QP_PKEY_INDEX) 5056 qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index); 5057 out: 5058 kfree(out); 5059 return err; 5060 } 5061 5062 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, 5063 int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) 5064 { 5065 struct mlx5_ib_dev *dev = to_mdev(ibqp->device); 5066 struct mlx5_ib_qp *qp = to_mqp(ibqp); 5067 int err = 0; 5068 u8 raw_packet_qp_state; 5069 5070 if (ibqp->rwq_ind_tbl) 5071 return -ENOSYS; 5072 5073 if (qp->type == IB_QPT_GSI) 5074 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask, 5075 qp_init_attr); 5076 5077 /* Not all of output fields are applicable, make sure to zero them */ 5078 memset(qp_init_attr, 0, sizeof(*qp_init_attr)); 5079 memset(qp_attr, 0, sizeof(*qp_attr)); 5080 5081 if (unlikely(qp->type == MLX5_IB_QPT_DCT)) 5082 return mlx5_ib_dct_query_qp(dev, qp, qp_attr, 5083 qp_attr_mask, qp_init_attr); 5084 5085 mutex_lock(&qp->mutex); 5086 5087 if (qp->type == IB_QPT_RAW_PACKET || 5088 qp->flags & IB_QP_CREATE_SOURCE_QPN) { 5089 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state); 5090 if (err) 5091 goto out; 5092 qp->state = raw_packet_qp_state; 5093 qp_attr->port_num = 1; 5094 } else { 5095 err = query_qp_attr(dev, qp, qp_attr); 5096 if (err) 5097 goto out; 5098 } 5099 5100 qp_attr->qp_state = qp->state; 5101 qp_attr->cur_qp_state = qp_attr->qp_state; 5102 qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt; 5103 qp_attr->cap.max_recv_sge = qp->rq.max_gs; 5104 5105 if (!ibqp->uobject) { 5106 qp_attr->cap.max_send_wr = qp->sq.max_post; 5107 qp_attr->cap.max_send_sge = qp->sq.max_gs; 5108 qp_init_attr->qp_context = ibqp->qp_context; 5109 } else { 5110 qp_attr->cap.max_send_wr = 0; 5111 qp_attr->cap.max_send_sge = 0; 5112 } 5113 5114 qp_init_attr->qp_type = qp->type; 5115 qp_init_attr->recv_cq = ibqp->recv_cq; 5116 qp_init_attr->send_cq = ibqp->send_cq; 5117 qp_init_attr->srq = ibqp->srq; 5118 qp_attr->cap.max_inline_data = qp->max_inline_data; 5119 5120 qp_init_attr->cap = qp_attr->cap; 5121 5122 qp_init_attr->create_flags = qp->flags; 5123 5124 qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ? 5125 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; 5126 5127 out: 5128 mutex_unlock(&qp->mutex); 5129 return err; 5130 } 5131 5132 int mlx5_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata) 5133 { 5134 struct mlx5_ib_dev *dev = to_mdev(ibxrcd->device); 5135 struct mlx5_ib_xrcd *xrcd = to_mxrcd(ibxrcd); 5136 5137 if (!MLX5_CAP_GEN(dev->mdev, xrc)) 5138 return -EOPNOTSUPP; 5139 5140 return mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0); 5141 } 5142 5143 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata) 5144 { 5145 struct mlx5_ib_dev *dev = to_mdev(xrcd->device); 5146 u32 xrcdn = to_mxrcd(xrcd)->xrcdn; 5147 5148 return mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0); 5149 } 5150 5151 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type) 5152 { 5153 struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp); 5154 struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device); 5155 struct ib_event event; 5156 5157 if (rwq->ibwq.event_handler) { 5158 event.device = rwq->ibwq.device; 5159 event.element.wq = &rwq->ibwq; 5160 switch (type) { 5161 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: 5162 event.event = IB_EVENT_WQ_FATAL; 5163 break; 5164 default: 5165 mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn); 5166 return; 5167 } 5168 5169 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context); 5170 } 5171 } 5172 5173 static int set_delay_drop(struct mlx5_ib_dev *dev) 5174 { 5175 int err = 0; 5176 5177 mutex_lock(&dev->delay_drop.lock); 5178 if (dev->delay_drop.activate) 5179 goto out; 5180 5181 err = mlx5_core_set_delay_drop(dev, dev->delay_drop.timeout); 5182 if (err) 5183 goto out; 5184 5185 dev->delay_drop.activate = true; 5186 out: 5187 mutex_unlock(&dev->delay_drop.lock); 5188 5189 if (!err) 5190 atomic_inc(&dev->delay_drop.rqs_cnt); 5191 return err; 5192 } 5193 5194 static int create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd, 5195 struct ib_wq_init_attr *init_attr) 5196 { 5197 struct mlx5_ib_dev *dev; 5198 int has_net_offloads; 5199 __be64 *rq_pas0; 5200 int ts_format; 5201 void *in; 5202 void *rqc; 5203 void *wq; 5204 int inlen; 5205 int err; 5206 5207 dev = to_mdev(pd->device); 5208 5209 ts_format = get_rq_ts_format(dev, to_mcq(init_attr->cq)); 5210 if (ts_format < 0) 5211 return ts_format; 5212 5213 inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas; 5214 in = kvzalloc(inlen, GFP_KERNEL); 5215 if (!in) 5216 return -ENOMEM; 5217 5218 MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid); 5219 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx); 5220 MLX5_SET(rqc, rqc, mem_rq_type, 5221 MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE); 5222 MLX5_SET(rqc, rqc, ts_format, ts_format); 5223 MLX5_SET(rqc, rqc, user_index, rwq->user_index); 5224 MLX5_SET(rqc, rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn); 5225 MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST); 5226 MLX5_SET(rqc, rqc, flush_in_error_en, 1); 5227 wq = MLX5_ADDR_OF(rqc, rqc, wq); 5228 MLX5_SET(wq, wq, wq_type, 5229 rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ? 5230 MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC); 5231 if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) { 5232 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) { 5233 mlx5_ib_dbg(dev, "Scatter end padding is not supported\n"); 5234 err = -EOPNOTSUPP; 5235 goto out; 5236 } else { 5237 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN); 5238 } 5239 } 5240 MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride); 5241 if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) { 5242 /* 5243 * In Firmware number of strides in each WQE is: 5244 * "512 * 2^single_wqe_log_num_of_strides" 5245 * Values 3 to 8 are accepted as 10 to 15, 9 to 18 are 5246 * accepted as 0 to 9 5247 */ 5248 static const u8 fw_map[] = { 10, 11, 12, 13, 14, 15, 0, 1, 5249 2, 3, 4, 5, 6, 7, 8, 9 }; 5250 MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en); 5251 MLX5_SET(wq, wq, log_wqe_stride_size, 5252 rwq->single_stride_log_num_of_bytes - 5253 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES); 5254 MLX5_SET(wq, wq, log_wqe_num_of_strides, 5255 fw_map[rwq->log_num_strides - 5256 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES]); 5257 } 5258 MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size); 5259 MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn); 5260 MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset); 5261 MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size); 5262 MLX5_SET(wq, wq, wq_signature, rwq->wq_sig); 5263 MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma); 5264 has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads); 5265 if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) { 5266 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) { 5267 mlx5_ib_dbg(dev, "VLAN offloads are not supported\n"); 5268 err = -EOPNOTSUPP; 5269 goto out; 5270 } 5271 } else { 5272 MLX5_SET(rqc, rqc, vsd, 1); 5273 } 5274 if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) { 5275 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) { 5276 mlx5_ib_dbg(dev, "Scatter FCS is not supported\n"); 5277 err = -EOPNOTSUPP; 5278 goto out; 5279 } 5280 MLX5_SET(rqc, rqc, scatter_fcs, 1); 5281 } 5282 if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) { 5283 if (!(dev->ib_dev.attrs.raw_packet_caps & 5284 IB_RAW_PACKET_CAP_DELAY_DROP)) { 5285 mlx5_ib_dbg(dev, "Delay drop is not supported\n"); 5286 err = -EOPNOTSUPP; 5287 goto out; 5288 } 5289 MLX5_SET(rqc, rqc, delay_drop_en, 1); 5290 } 5291 rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas); 5292 mlx5_ib_populate_pas(rwq->umem, 1UL << rwq->page_shift, rq_pas0, 0); 5293 err = mlx5_core_create_rq_tracked(dev, in, inlen, &rwq->core_qp); 5294 if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) { 5295 err = set_delay_drop(dev); 5296 if (err) { 5297 mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n", 5298 err); 5299 mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp); 5300 } else { 5301 rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP; 5302 } 5303 } 5304 out: 5305 kvfree(in); 5306 return err; 5307 } 5308 5309 static int set_user_rq_size(struct mlx5_ib_dev *dev, 5310 struct ib_wq_init_attr *wq_init_attr, 5311 struct mlx5_ib_create_wq *ucmd, 5312 struct mlx5_ib_rwq *rwq) 5313 { 5314 /* Sanity check RQ size before proceeding */ 5315 if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz))) 5316 return -EINVAL; 5317 5318 if (!ucmd->rq_wqe_count) 5319 return -EINVAL; 5320 5321 rwq->wqe_count = ucmd->rq_wqe_count; 5322 rwq->wqe_shift = ucmd->rq_wqe_shift; 5323 if (check_shl_overflow(rwq->wqe_count, rwq->wqe_shift, &rwq->buf_size)) 5324 return -EINVAL; 5325 5326 rwq->log_rq_stride = rwq->wqe_shift; 5327 rwq->log_rq_size = ilog2(rwq->wqe_count); 5328 return 0; 5329 } 5330 5331 static bool log_of_strides_valid(struct mlx5_ib_dev *dev, u32 log_num_strides) 5332 { 5333 if ((log_num_strides > MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) || 5334 (log_num_strides < MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES)) 5335 return false; 5336 5337 if (!MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) && 5338 (log_num_strides < MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES)) 5339 return false; 5340 5341 return true; 5342 } 5343 5344 static int prepare_user_rq(struct ib_pd *pd, 5345 struct ib_wq_init_attr *init_attr, 5346 struct ib_udata *udata, 5347 struct mlx5_ib_rwq *rwq) 5348 { 5349 struct mlx5_ib_dev *dev = to_mdev(pd->device); 5350 struct mlx5_ib_create_wq ucmd = {}; 5351 int err; 5352 size_t required_cmd_sz; 5353 5354 required_cmd_sz = offsetofend(struct mlx5_ib_create_wq, 5355 single_stride_log_num_of_bytes); 5356 if (udata->inlen < required_cmd_sz) { 5357 mlx5_ib_dbg(dev, "invalid inlen\n"); 5358 return -EINVAL; 5359 } 5360 5361 if (udata->inlen > sizeof(ucmd) && 5362 !ib_is_udata_cleared(udata, sizeof(ucmd), 5363 udata->inlen - sizeof(ucmd))) { 5364 mlx5_ib_dbg(dev, "inlen is not supported\n"); 5365 return -EOPNOTSUPP; 5366 } 5367 5368 if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) { 5369 mlx5_ib_dbg(dev, "copy failed\n"); 5370 return -EFAULT; 5371 } 5372 5373 if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) { 5374 mlx5_ib_dbg(dev, "invalid comp mask\n"); 5375 return -EOPNOTSUPP; 5376 } else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) { 5377 if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) { 5378 mlx5_ib_dbg(dev, "Striding RQ is not supported\n"); 5379 return -EOPNOTSUPP; 5380 } 5381 if ((ucmd.single_stride_log_num_of_bytes < 5382 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) || 5383 (ucmd.single_stride_log_num_of_bytes > 5384 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) { 5385 mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n", 5386 ucmd.single_stride_log_num_of_bytes, 5387 MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES, 5388 MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES); 5389 return -EINVAL; 5390 } 5391 if (!log_of_strides_valid(dev, 5392 ucmd.single_wqe_log_num_of_strides)) { 5393 mlx5_ib_dbg( 5394 dev, 5395 "Invalid log num strides (%u. Range is %u - %u)\n", 5396 ucmd.single_wqe_log_num_of_strides, 5397 MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) ? 5398 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES : 5399 MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES, 5400 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES); 5401 return -EINVAL; 5402 } 5403 rwq->single_stride_log_num_of_bytes = 5404 ucmd.single_stride_log_num_of_bytes; 5405 rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides; 5406 rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en; 5407 rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ; 5408 } 5409 5410 err = set_user_rq_size(dev, init_attr, &ucmd, rwq); 5411 if (err) { 5412 mlx5_ib_dbg(dev, "err %d\n", err); 5413 return err; 5414 } 5415 5416 err = create_user_rq(dev, pd, udata, rwq, &ucmd); 5417 if (err) { 5418 mlx5_ib_dbg(dev, "err %d\n", err); 5419 return err; 5420 } 5421 5422 rwq->user_index = ucmd.user_index; 5423 return 0; 5424 } 5425 5426 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd, 5427 struct ib_wq_init_attr *init_attr, 5428 struct ib_udata *udata) 5429 { 5430 struct mlx5_ib_dev *dev; 5431 struct mlx5_ib_rwq *rwq; 5432 struct mlx5_ib_create_wq_resp resp = {}; 5433 size_t min_resp_len; 5434 int err; 5435 5436 if (!udata) 5437 return ERR_PTR(-ENOSYS); 5438 5439 min_resp_len = offsetofend(struct mlx5_ib_create_wq_resp, reserved); 5440 if (udata->outlen && udata->outlen < min_resp_len) 5441 return ERR_PTR(-EINVAL); 5442 5443 if (!capable(CAP_SYS_RAWIO) && 5444 init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) 5445 return ERR_PTR(-EPERM); 5446 5447 dev = to_mdev(pd->device); 5448 switch (init_attr->wq_type) { 5449 case IB_WQT_RQ: 5450 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL); 5451 if (!rwq) 5452 return ERR_PTR(-ENOMEM); 5453 err = prepare_user_rq(pd, init_attr, udata, rwq); 5454 if (err) 5455 goto err; 5456 err = create_rq(rwq, pd, init_attr); 5457 if (err) 5458 goto err_user_rq; 5459 break; 5460 default: 5461 mlx5_ib_dbg(dev, "unsupported wq type %d\n", 5462 init_attr->wq_type); 5463 return ERR_PTR(-EINVAL); 5464 } 5465 5466 rwq->ibwq.wq_num = rwq->core_qp.qpn; 5467 rwq->ibwq.state = IB_WQS_RESET; 5468 if (udata->outlen) { 5469 resp.response_length = offsetofend( 5470 struct mlx5_ib_create_wq_resp, response_length); 5471 err = ib_copy_to_udata(udata, &resp, resp.response_length); 5472 if (err) 5473 goto err_copy; 5474 } 5475 5476 rwq->core_qp.event = mlx5_ib_wq_event; 5477 rwq->ibwq.event_handler = init_attr->event_handler; 5478 return &rwq->ibwq; 5479 5480 err_copy: 5481 mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp); 5482 err_user_rq: 5483 destroy_user_rq(dev, pd, rwq, udata); 5484 err: 5485 kfree(rwq); 5486 return ERR_PTR(err); 5487 } 5488 5489 int mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata) 5490 { 5491 struct mlx5_ib_dev *dev = to_mdev(wq->device); 5492 struct mlx5_ib_rwq *rwq = to_mrwq(wq); 5493 int ret; 5494 5495 ret = mlx5_core_destroy_rq_tracked(dev, &rwq->core_qp); 5496 if (ret) 5497 return ret; 5498 destroy_user_rq(dev, wq->pd, rwq, udata); 5499 kfree(rwq); 5500 return 0; 5501 } 5502 5503 int mlx5_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table, 5504 struct ib_rwq_ind_table_init_attr *init_attr, 5505 struct ib_udata *udata) 5506 { 5507 struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = 5508 to_mrwq_ind_table(ib_rwq_ind_table); 5509 struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_table->device); 5510 int sz = 1 << init_attr->log_ind_tbl_size; 5511 struct mlx5_ib_create_rwq_ind_tbl_resp resp = {}; 5512 size_t min_resp_len; 5513 int inlen; 5514 int err; 5515 int i; 5516 u32 *in; 5517 void *rqtc; 5518 5519 if (udata->inlen > 0 && 5520 !ib_is_udata_cleared(udata, 0, 5521 udata->inlen)) 5522 return -EOPNOTSUPP; 5523 5524 if (init_attr->log_ind_tbl_size > 5525 MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) { 5526 mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n", 5527 init_attr->log_ind_tbl_size, 5528 MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)); 5529 return -EINVAL; 5530 } 5531 5532 min_resp_len = 5533 offsetofend(struct mlx5_ib_create_rwq_ind_tbl_resp, reserved); 5534 if (udata->outlen && udata->outlen < min_resp_len) 5535 return -EINVAL; 5536 5537 inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz; 5538 in = kvzalloc(inlen, GFP_KERNEL); 5539 if (!in) 5540 return -ENOMEM; 5541 5542 rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context); 5543 5544 MLX5_SET(rqtc, rqtc, rqt_actual_size, sz); 5545 MLX5_SET(rqtc, rqtc, rqt_max_size, sz); 5546 5547 for (i = 0; i < sz; i++) 5548 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num); 5549 5550 rwq_ind_tbl->uid = to_mpd(init_attr->ind_tbl[0]->pd)->uid; 5551 MLX5_SET(create_rqt_in, in, uid, rwq_ind_tbl->uid); 5552 5553 err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn); 5554 kvfree(in); 5555 if (err) 5556 return err; 5557 5558 rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn; 5559 if (udata->outlen) { 5560 resp.response_length = 5561 offsetofend(struct mlx5_ib_create_rwq_ind_tbl_resp, 5562 response_length); 5563 err = ib_copy_to_udata(udata, &resp, resp.response_length); 5564 if (err) 5565 goto err_copy; 5566 } 5567 5568 return 0; 5569 5570 err_copy: 5571 mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid); 5572 return err; 5573 } 5574 5575 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl) 5576 { 5577 struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl); 5578 struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device); 5579 5580 return mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid); 5581 } 5582 5583 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 5584 u32 wq_attr_mask, struct ib_udata *udata) 5585 { 5586 struct mlx5_ib_dev *dev = to_mdev(wq->device); 5587 struct mlx5_ib_rwq *rwq = to_mrwq(wq); 5588 struct mlx5_ib_modify_wq ucmd = {}; 5589 size_t required_cmd_sz; 5590 int curr_wq_state; 5591 int wq_state; 5592 int inlen; 5593 int err; 5594 void *rqc; 5595 void *in; 5596 5597 required_cmd_sz = offsetofend(struct mlx5_ib_modify_wq, reserved); 5598 if (udata->inlen < required_cmd_sz) 5599 return -EINVAL; 5600 5601 if (udata->inlen > sizeof(ucmd) && 5602 !ib_is_udata_cleared(udata, sizeof(ucmd), 5603 udata->inlen - sizeof(ucmd))) 5604 return -EOPNOTSUPP; 5605 5606 if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) 5607 return -EFAULT; 5608 5609 if (ucmd.comp_mask || ucmd.reserved) 5610 return -EOPNOTSUPP; 5611 5612 inlen = MLX5_ST_SZ_BYTES(modify_rq_in); 5613 in = kvzalloc(inlen, GFP_KERNEL); 5614 if (!in) 5615 return -ENOMEM; 5616 5617 rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx); 5618 5619 curr_wq_state = wq_attr->curr_wq_state; 5620 wq_state = wq_attr->wq_state; 5621 if (curr_wq_state == IB_WQS_ERR) 5622 curr_wq_state = MLX5_RQC_STATE_ERR; 5623 if (wq_state == IB_WQS_ERR) 5624 wq_state = MLX5_RQC_STATE_ERR; 5625 MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state); 5626 MLX5_SET(modify_rq_in, in, uid, to_mpd(wq->pd)->uid); 5627 MLX5_SET(rqc, rqc, state, wq_state); 5628 5629 if (wq_attr_mask & IB_WQ_FLAGS) { 5630 if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) { 5631 if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) && 5632 MLX5_CAP_ETH(dev->mdev, vlan_cap))) { 5633 mlx5_ib_dbg(dev, "VLAN offloads are not supported\n"); 5634 err = -EOPNOTSUPP; 5635 goto out; 5636 } 5637 MLX5_SET64(modify_rq_in, in, modify_bitmask, 5638 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD); 5639 MLX5_SET(rqc, rqc, vsd, 5640 (wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1); 5641 } 5642 5643 if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) { 5644 mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n"); 5645 err = -EOPNOTSUPP; 5646 goto out; 5647 } 5648 } 5649 5650 if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) { 5651 u16 set_id; 5652 5653 set_id = mlx5_ib_get_counters_id(dev, 0); 5654 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) { 5655 MLX5_SET64(modify_rq_in, in, modify_bitmask, 5656 MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID); 5657 MLX5_SET(rqc, rqc, counter_set_id, set_id); 5658 } else 5659 dev_info_once( 5660 &dev->ib_dev.dev, 5661 "Receive WQ counters are not supported on current FW\n"); 5662 } 5663 5664 err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in); 5665 if (!err) 5666 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state; 5667 5668 out: 5669 kvfree(in); 5670 return err; 5671 } 5672 5673 struct mlx5_ib_drain_cqe { 5674 struct ib_cqe cqe; 5675 struct completion done; 5676 }; 5677 5678 static void mlx5_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 5679 { 5680 struct mlx5_ib_drain_cqe *cqe = container_of(wc->wr_cqe, 5681 struct mlx5_ib_drain_cqe, 5682 cqe); 5683 5684 complete(&cqe->done); 5685 } 5686 5687 /* This function returns only once the drained WR was completed */ 5688 static void handle_drain_completion(struct ib_cq *cq, 5689 struct mlx5_ib_drain_cqe *sdrain, 5690 struct mlx5_ib_dev *dev) 5691 { 5692 struct mlx5_core_dev *mdev = dev->mdev; 5693 5694 if (cq->poll_ctx == IB_POLL_DIRECT) { 5695 while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0) 5696 ib_process_cq_direct(cq, -1); 5697 return; 5698 } 5699 5700 if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { 5701 struct mlx5_ib_cq *mcq = to_mcq(cq); 5702 bool triggered = false; 5703 unsigned long flags; 5704 5705 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags); 5706 /* Make sure that the CQ handler won't run if wasn't run yet */ 5707 if (!mcq->mcq.reset_notify_added) 5708 mcq->mcq.reset_notify_added = 1; 5709 else 5710 triggered = true; 5711 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags); 5712 5713 if (triggered) { 5714 /* Wait for any scheduled/running task to be ended */ 5715 switch (cq->poll_ctx) { 5716 case IB_POLL_SOFTIRQ: 5717 irq_poll_disable(&cq->iop); 5718 irq_poll_enable(&cq->iop); 5719 break; 5720 case IB_POLL_WORKQUEUE: 5721 cancel_work_sync(&cq->work); 5722 break; 5723 default: 5724 WARN_ON_ONCE(1); 5725 } 5726 } 5727 5728 /* Run the CQ handler - this makes sure that the drain WR will 5729 * be processed if wasn't processed yet. 5730 */ 5731 mcq->mcq.comp(&mcq->mcq, NULL); 5732 } 5733 5734 wait_for_completion(&sdrain->done); 5735 } 5736 5737 void mlx5_ib_drain_sq(struct ib_qp *qp) 5738 { 5739 struct ib_cq *cq = qp->send_cq; 5740 struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 5741 struct mlx5_ib_drain_cqe sdrain; 5742 const struct ib_send_wr *bad_swr; 5743 struct ib_rdma_wr swr = { 5744 .wr = { 5745 .next = NULL, 5746 { .wr_cqe = &sdrain.cqe, }, 5747 .opcode = IB_WR_RDMA_WRITE, 5748 }, 5749 }; 5750 int ret; 5751 struct mlx5_ib_dev *dev = to_mdev(qp->device); 5752 struct mlx5_core_dev *mdev = dev->mdev; 5753 5754 ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 5755 if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) { 5756 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 5757 return; 5758 } 5759 5760 sdrain.cqe.done = mlx5_ib_drain_qp_done; 5761 init_completion(&sdrain.done); 5762 5763 ret = mlx5_ib_post_send_drain(qp, &swr.wr, &bad_swr); 5764 if (ret) { 5765 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 5766 return; 5767 } 5768 5769 handle_drain_completion(cq, &sdrain, dev); 5770 } 5771 5772 void mlx5_ib_drain_rq(struct ib_qp *qp) 5773 { 5774 struct ib_cq *cq = qp->recv_cq; 5775 struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 5776 struct mlx5_ib_drain_cqe rdrain; 5777 struct ib_recv_wr rwr = {}; 5778 const struct ib_recv_wr *bad_rwr; 5779 int ret; 5780 struct mlx5_ib_dev *dev = to_mdev(qp->device); 5781 struct mlx5_core_dev *mdev = dev->mdev; 5782 5783 ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 5784 if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) { 5785 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 5786 return; 5787 } 5788 5789 rwr.wr_cqe = &rdrain.cqe; 5790 rdrain.cqe.done = mlx5_ib_drain_qp_done; 5791 init_completion(&rdrain.done); 5792 5793 ret = mlx5_ib_post_recv_drain(qp, &rwr, &bad_rwr); 5794 if (ret) { 5795 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 5796 return; 5797 } 5798 5799 handle_drain_completion(cq, &rdrain, dev); 5800 } 5801 5802 /* 5803 * Bind a qp to a counter. If @counter is NULL then bind the qp to 5804 * the default counter 5805 */ 5806 int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter) 5807 { 5808 struct mlx5_ib_dev *dev = to_mdev(qp->device); 5809 struct mlx5_ib_qp *mqp = to_mqp(qp); 5810 int err = 0; 5811 5812 mutex_lock(&mqp->mutex); 5813 if (mqp->state == IB_QPS_RESET) { 5814 qp->counter = counter; 5815 goto out; 5816 } 5817 5818 if (!MLX5_CAP_GEN(dev->mdev, rts2rts_qp_counters_set_id)) { 5819 err = -EOPNOTSUPP; 5820 goto out; 5821 } 5822 5823 if (mqp->state == IB_QPS_RTS) { 5824 err = __mlx5_ib_qp_set_counter(qp, counter); 5825 if (!err) 5826 qp->counter = counter; 5827 5828 goto out; 5829 } 5830 5831 mqp->counter_pending = 1; 5832 qp->counter = counter; 5833 5834 out: 5835 mutex_unlock(&mqp->mutex); 5836 return err; 5837 } 5838 5839 int mlx5_ib_qp_event_init(void) 5840 { 5841 mlx5_ib_qp_event_wq = alloc_ordered_workqueue("mlx5_ib_qp_event_wq", 0); 5842 if (!mlx5_ib_qp_event_wq) 5843 return -ENOMEM; 5844 5845 return 0; 5846 } 5847 5848 void mlx5_ib_qp_event_cleanup(void) 5849 { 5850 destroy_workqueue(mlx5_ib_qp_event_wq); 5851 } 5852