drivers/infiniband/hw/mlx5/qp.c

   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/module.h>
  34 #include <rdma/ib_umem.h>
  35 #include <rdma/ib_cache.h>
  36 #include <rdma/ib_user_verbs.h>
  37 #include <linux/mlx5/fs.h>
  38 #include "mlx5_ib.h"
  39 #include "ib_rep.h"
  40 #include "cmd.h"
  41
  42 /* not supported currently */
  43 static int wq_signature;
  44
  45 enum {
  46         MLX5_IB_ACK_REQ_FREQ    = 8,
  47 };
  48
  49 enum {
  50         MLX5_IB_DEFAULT_SCHED_QUEUE     = 0x83,
  51         MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
  52         MLX5_IB_LINK_TYPE_IB            = 0,
  53         MLX5_IB_LINK_TYPE_ETH           = 1
  54 };
  55
  56 enum {
  57         MLX5_IB_SQ_STRIDE       = 6,
  58         MLX5_IB_SQ_UMR_INLINE_THRESHOLD = 64,
  59 };
  60
  61 static const u32 mlx5_ib_opcode[] = {
  62         [IB_WR_SEND]                            = MLX5_OPCODE_SEND,
  63         [IB_WR_LSO]                             = MLX5_OPCODE_LSO,
  64         [IB_WR_SEND_WITH_IMM]                   = MLX5_OPCODE_SEND_IMM,
  65         [IB_WR_RDMA_WRITE]                      = MLX5_OPCODE_RDMA_WRITE,
  66         [IB_WR_RDMA_WRITE_WITH_IMM]             = MLX5_OPCODE_RDMA_WRITE_IMM,
  67         [IB_WR_RDMA_READ]                       = MLX5_OPCODE_RDMA_READ,
  68         [IB_WR_ATOMIC_CMP_AND_SWP]              = MLX5_OPCODE_ATOMIC_CS,
  69         [IB_WR_ATOMIC_FETCH_AND_ADD]            = MLX5_OPCODE_ATOMIC_FA,
  70         [IB_WR_SEND_WITH_INV]                   = MLX5_OPCODE_SEND_INVAL,
  71         [IB_WR_LOCAL_INV]                       = MLX5_OPCODE_UMR,
  72         [IB_WR_REG_MR]                          = MLX5_OPCODE_UMR,
  73         [IB_WR_MASKED_ATOMIC_CMP_AND_SWP]       = MLX5_OPCODE_ATOMIC_MASKED_CS,
  74         [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD]     = MLX5_OPCODE_ATOMIC_MASKED_FA,
  75         [MLX5_IB_WR_UMR]                        = MLX5_OPCODE_UMR,
  76 };
  77
  78 struct mlx5_wqe_eth_pad {
  79         u8 rsvd0[16];
  80 };
  81
  82 enum raw_qp_set_mask_map {
  83         MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID         = 1UL << 0,
  84         MLX5_RAW_QP_RATE_LIMIT                  = 1UL << 1,
  85 };
  86
  87 struct mlx5_modify_raw_qp_param {
  88         u16 operation;
  89
  90         u32 set_mask; /* raw_qp_set_mask_map */
  91
  92         struct mlx5_rate_limit rl;
  93
  94         u8 rq_q_ctr_id;
  95         u16 port;
  96 };
  97
  98 static void get_cqs(enum ib_qp_type qp_type,
  99                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
 100                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
 101
 102 static int is_qp0(enum ib_qp_type qp_type)
 103 {
 104         return qp_type == IB_QPT_SMI;
 105 }
 106
 107 static int is_sqp(enum ib_qp_type qp_type)
 108 {
 109         return is_qp0(qp_type) || is_qp1(qp_type);
 110 }
 111
 112 /**
 113  * mlx5_ib_read_user_wqe_common() - Copy a WQE (or part of) from user WQ
 114  * to kernel buffer
 115  *
 116  * @umem: User space memory where the WQ is
 117  * @buffer: buffer to copy to
 118  * @buflen: buffer length
 119  * @wqe_index: index of WQE to copy from
 120  * @wq_offset: offset to start of WQ
 121  * @wq_wqe_cnt: number of WQEs in WQ
 122  * @wq_wqe_shift: log2 of WQE size
 123  * @bcnt: number of bytes to copy
 124  * @bytes_copied: number of bytes to copy (return value)
 125  *
 126  * Copies from start of WQE bcnt or less bytes.
 127  * Does not gurantee to copy the entire WQE.
 128  *
 129  * Return: zero on success, or an error code.
 130  */
 131 static int mlx5_ib_read_user_wqe_common(struct ib_umem *umem,
 132                                         void *buffer,
 133                                         u32 buflen,
 134                                         int wqe_index,
 135                                         int wq_offset,
 136                                         int wq_wqe_cnt,
 137                                         int wq_wqe_shift,
 138                                         int bcnt,
 139                                         size_t *bytes_copied)
 140 {
 141         size_t offset = wq_offset + ((wqe_index % wq_wqe_cnt) << wq_wqe_shift);
 142         size_t wq_end = wq_offset + (wq_wqe_cnt << wq_wqe_shift);
 143         size_t copy_length;
 144         int ret;
 145
 146         /* don't copy more than requested, more than buffer length or
 147          * beyond WQ end
 148          */
 149         copy_length = min_t(u32, buflen, wq_end - offset);
 150         copy_length = min_t(u32, copy_length, bcnt);
 151
 152         ret = ib_umem_copy_from(buffer, umem, offset, copy_length);
 153         if (ret)
 154                 return ret;
 155
 156         if (!ret && bytes_copied)
 157                 *bytes_copied = copy_length;
 158
 159         return 0;
 160 }
 161
 162 int mlx5_ib_read_user_wqe_sq(struct mlx5_ib_qp *qp,
 163                              int wqe_index,
 164                              void *buffer,
 165                              int buflen,
 166                              size_t *bc)
 167 {
 168         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
 169         struct ib_umem *umem = base->ubuffer.umem;
 170         struct mlx5_ib_wq *wq = &qp->sq;
 171         struct mlx5_wqe_ctrl_seg *ctrl;
 172         size_t bytes_copied;
 173         size_t bytes_copied2;
 174         size_t wqe_length;
 175         int ret;
 176         int ds;
 177
 178         if (buflen < sizeof(*ctrl))
 179                 return -EINVAL;
 180
 181         /* at first read as much as possible */
 182         ret = mlx5_ib_read_user_wqe_common(umem,
 183                                            buffer,
 184                                            buflen,
 185                                            wqe_index,
 186                                            wq->offset,
 187                                            wq->wqe_cnt,
 188                                            wq->wqe_shift,
 189                                            buflen,
 190                                            &bytes_copied);
 191         if (ret)
 192                 return ret;
 193
 194         /* we need at least control segment size to proceed */
 195         if (bytes_copied < sizeof(*ctrl))
 196                 return -EINVAL;
 197
 198         ctrl = buffer;
 199         ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
 200         wqe_length = ds * MLX5_WQE_DS_UNITS;
 201
 202         /* if we copied enough then we are done */
 203         if (bytes_copied >= wqe_length) {
 204                 *bc = bytes_copied;
 205                 return 0;
 206         }
 207
 208         /* otherwise this a wrapped around wqe
 209          * so read the remaining bytes starting
 210          * from  wqe_index 0
 211          */
 212         ret = mlx5_ib_read_user_wqe_common(umem,
 213                                            buffer + bytes_copied,
 214                                            buflen - bytes_copied,
 215                                            0,
 216                                            wq->offset,
 217                                            wq->wqe_cnt,
 218                                            wq->wqe_shift,
 219                                            wqe_length - bytes_copied,
 220                                            &bytes_copied2);
 221
 222         if (ret)
 223                 return ret;
 224         *bc = bytes_copied + bytes_copied2;
 225         return 0;
 226 }
 227
 228 int mlx5_ib_read_user_wqe_rq(struct mlx5_ib_qp *qp,
 229                              int wqe_index,
 230                              void *buffer,
 231                              int buflen,
 232                              size_t *bc)
 233 {
 234         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
 235         struct ib_umem *umem = base->ubuffer.umem;
 236         struct mlx5_ib_wq *wq = &qp->rq;
 237         size_t bytes_copied;
 238         int ret;
 239
 240         ret = mlx5_ib_read_user_wqe_common(umem,
 241                                            buffer,
 242                                            buflen,
 243                                            wqe_index,
 244                                            wq->offset,
 245                                            wq->wqe_cnt,
 246                                            wq->wqe_shift,
 247                                            buflen,
 248                                            &bytes_copied);
 249
 250         if (ret)
 251                 return ret;
 252         *bc = bytes_copied;
 253         return 0;
 254 }
 255
 256 int mlx5_ib_read_user_wqe_srq(struct mlx5_ib_srq *srq,
 257                               int wqe_index,
 258                               void *buffer,
 259                               int buflen,
 260                               size_t *bc)
 261 {
 262         struct ib_umem *umem = srq->umem;
 263         size_t bytes_copied;
 264         int ret;
 265
 266         ret = mlx5_ib_read_user_wqe_common(umem,
 267                                            buffer,
 268                                            buflen,
 269                                            wqe_index,
 270                                            0,
 271                                            srq->msrq.max,
 272                                            srq->msrq.wqe_shift,
 273                                            buflen,
 274                                            &bytes_copied);
 275
 276         if (ret)
 277                 return ret;
 278         *bc = bytes_copied;
 279         return 0;
 280 }
 281
 282 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
 283 {
 284         struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
 285         struct ib_event event;
 286
 287         if (type == MLX5_EVENT_TYPE_PATH_MIG) {
 288                 /* This event is only valid for trans_qps */
 289                 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
 290         }
 291
 292         if (ibqp->event_handler) {
 293                 event.device     = ibqp->device;
 294                 event.element.qp = ibqp;
 295                 switch (type) {
 296                 case MLX5_EVENT_TYPE_PATH_MIG:
 297                         event.event = IB_EVENT_PATH_MIG;
 298                         break;
 299                 case MLX5_EVENT_TYPE_COMM_EST:
 300                         event.event = IB_EVENT_COMM_EST;
 301                         break;
 302                 case MLX5_EVENT_TYPE_SQ_DRAINED:
 303                         event.event = IB_EVENT_SQ_DRAINED;
 304                         break;
 305                 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
 306                         event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 307                         break;
 308                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
 309                         event.event = IB_EVENT_QP_FATAL;
 310                         break;
 311                 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
 312                         event.event = IB_EVENT_PATH_MIG_ERR;
 313                         break;
 314                 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
 315                         event.event = IB_EVENT_QP_REQ_ERR;
 316                         break;
 317                 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
 318                         event.event = IB_EVENT_QP_ACCESS_ERR;
 319                         break;
 320                 default:
 321                         pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
 322                         return;
 323                 }
 324
 325                 ibqp->event_handler(&event, ibqp->qp_context);
 326         }
 327 }
 328
 329 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
 330                        int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
 331 {
 332         int wqe_size;
 333         int wq_size;
 334
 335         /* Sanity check RQ size before proceeding */
 336         if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
 337                 return -EINVAL;
 338
 339         if (!has_rq) {
 340                 qp->rq.max_gs = 0;
 341                 qp->rq.wqe_cnt = 0;
 342                 qp->rq.wqe_shift = 0;
 343                 cap->max_recv_wr = 0;
 344                 cap->max_recv_sge = 0;
 345         } else {
 346                 if (ucmd) {
 347                         qp->rq.wqe_cnt = ucmd->rq_wqe_count;
 348                         if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift))
 349                                 return -EINVAL;
 350                         qp->rq.wqe_shift = ucmd->rq_wqe_shift;
 351                         if ((1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) < qp->wq_sig)
 352                                 return -EINVAL;
 353                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 354                         qp->rq.max_post = qp->rq.wqe_cnt;
 355                 } else {
 356                         wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
 357                         wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
 358                         wqe_size = roundup_pow_of_two(wqe_size);
 359                         wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
 360                         wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
 361                         qp->rq.wqe_cnt = wq_size / wqe_size;
 362                         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
 363                                 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
 364                                             wqe_size,
 365                                             MLX5_CAP_GEN(dev->mdev,
 366                                                          max_wqe_sz_rq));
 367                                 return -EINVAL;
 368                         }
 369                         qp->rq.wqe_shift = ilog2(wqe_size);
 370                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 371                         qp->rq.max_post = qp->rq.wqe_cnt;
 372                 }
 373         }
 374
 375         return 0;
 376 }
 377
 378 static int sq_overhead(struct ib_qp_init_attr *attr)
 379 {
 380         int size = 0;
 381
 382         switch (attr->qp_type) {
 383         case IB_QPT_XRC_INI:
 384                 size += sizeof(struct mlx5_wqe_xrc_seg);
 385                 /* fall through */
 386         case IB_QPT_RC:
 387                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 388                         max(sizeof(struct mlx5_wqe_atomic_seg) +
 389                             sizeof(struct mlx5_wqe_raddr_seg),
 390                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 391                             sizeof(struct mlx5_mkey_seg) +
 392                             MLX5_IB_SQ_UMR_INLINE_THRESHOLD /
 393                             MLX5_IB_UMR_OCTOWORD);
 394                 break;
 395
 396         case IB_QPT_XRC_TGT:
 397                 return 0;
 398
 399         case IB_QPT_UC:
 400                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 401                         max(sizeof(struct mlx5_wqe_raddr_seg),
 402                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 403                             sizeof(struct mlx5_mkey_seg));
 404                 break;
 405
 406         case IB_QPT_UD:
 407                 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
 408                         size += sizeof(struct mlx5_wqe_eth_pad) +
 409                                 sizeof(struct mlx5_wqe_eth_seg);
 410                 /* fall through */
 411         case IB_QPT_SMI:
 412         case MLX5_IB_QPT_HW_GSI:
 413                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 414                         sizeof(struct mlx5_wqe_datagram_seg);
 415                 break;
 416
 417         case MLX5_IB_QPT_REG_UMR:
 418                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 419                         sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 420                         sizeof(struct mlx5_mkey_seg);
 421                 break;
 422
 423         default:
 424                 return -EINVAL;
 425         }
 426
 427         return size;
 428 }
 429
 430 static int calc_send_wqe(struct ib_qp_init_attr *attr)
 431 {
 432         int inl_size = 0;
 433         int size;
 434
 435         size = sq_overhead(attr);
 436         if (size < 0)
 437                 return size;
 438
 439         if (attr->cap.max_inline_data) {
 440                 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
 441                         attr->cap.max_inline_data;
 442         }
 443
 444         size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
 445         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN &&
 446             ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
 447                         return MLX5_SIG_WQE_SIZE;
 448         else
 449                 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
 450 }
 451
 452 static int get_send_sge(struct ib_qp_init_attr *attr, int wqe_size)
 453 {
 454         int max_sge;
 455
 456         if (attr->qp_type == IB_QPT_RC)
 457                 max_sge = (min_t(int, wqe_size, 512) -
 458                            sizeof(struct mlx5_wqe_ctrl_seg) -
 459                            sizeof(struct mlx5_wqe_raddr_seg)) /
 460                         sizeof(struct mlx5_wqe_data_seg);
 461         else if (attr->qp_type == IB_QPT_XRC_INI)
 462                 max_sge = (min_t(int, wqe_size, 512) -
 463                            sizeof(struct mlx5_wqe_ctrl_seg) -
 464                            sizeof(struct mlx5_wqe_xrc_seg) -
 465                            sizeof(struct mlx5_wqe_raddr_seg)) /
 466                         sizeof(struct mlx5_wqe_data_seg);
 467         else
 468                 max_sge = (wqe_size - sq_overhead(attr)) /
 469                         sizeof(struct mlx5_wqe_data_seg);
 470
 471         return min_t(int, max_sge, wqe_size - sq_overhead(attr) /
 472                      sizeof(struct mlx5_wqe_data_seg));
 473 }
 474
 475 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
 476                         struct mlx5_ib_qp *qp)
 477 {
 478         int wqe_size;
 479         int wq_size;
 480
 481         if (!attr->cap.max_send_wr)
 482                 return 0;
 483
 484         wqe_size = calc_send_wqe(attr);
 485         mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
 486         if (wqe_size < 0)
 487                 return wqe_size;
 488
 489         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 490                 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
 491                             wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 492                 return -EINVAL;
 493         }
 494
 495         qp->max_inline_data = wqe_size - sq_overhead(attr) -
 496                               sizeof(struct mlx5_wqe_inline_seg);
 497         attr->cap.max_inline_data = qp->max_inline_data;
 498
 499         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
 500                 qp->signature_en = true;
 501
 502         wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
 503         qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
 504         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 505                 mlx5_ib_dbg(dev, "send queue size (%d * %d / %d -> %d) exceeds limits(%d)\n",
 506                             attr->cap.max_send_wr, wqe_size, MLX5_SEND_WQE_BB,
 507                             qp->sq.wqe_cnt,
 508                             1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 509                 return -ENOMEM;
 510         }
 511         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 512         qp->sq.max_gs = get_send_sge(attr, wqe_size);
 513         if (qp->sq.max_gs < attr->cap.max_send_sge)
 514                 return -ENOMEM;
 515
 516         attr->cap.max_send_sge = qp->sq.max_gs;
 517         qp->sq.max_post = wq_size / wqe_size;
 518         attr->cap.max_send_wr = qp->sq.max_post;
 519
 520         return wq_size;
 521 }
 522
 523 static int set_user_buf_size(struct mlx5_ib_dev *dev,
 524                             struct mlx5_ib_qp *qp,
 525                             struct mlx5_ib_create_qp *ucmd,
 526                             struct mlx5_ib_qp_base *base,
 527                             struct ib_qp_init_attr *attr)
 528 {
 529         int desc_sz = 1 << qp->sq.wqe_shift;
 530
 531         if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 532                 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
 533                              desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 534                 return -EINVAL;
 535         }
 536
 537         if (ucmd->sq_wqe_count && !is_power_of_2(ucmd->sq_wqe_count)) {
 538                 mlx5_ib_warn(dev, "sq_wqe_count %d is not a power of two\n",
 539                              ucmd->sq_wqe_count);
 540                 return -EINVAL;
 541         }
 542
 543         qp->sq.wqe_cnt = ucmd->sq_wqe_count;
 544
 545         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 546                 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
 547                              qp->sq.wqe_cnt,
 548                              1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 549                 return -EINVAL;
 550         }
 551
 552         if (attr->qp_type == IB_QPT_RAW_PACKET ||
 553             qp->flags & MLX5_IB_QP_UNDERLAY) {
 554                 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 555                 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
 556         } else {
 557                 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
 558                                          (qp->sq.wqe_cnt << 6);
 559         }
 560
 561         return 0;
 562 }
 563
 564 static int qp_has_rq(struct ib_qp_init_attr *attr)
 565 {
 566         if (attr->qp_type == IB_QPT_XRC_INI ||
 567             attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
 568             attr->qp_type == MLX5_IB_QPT_REG_UMR ||
 569             !attr->cap.max_recv_wr)
 570                 return 0;
 571
 572         return 1;
 573 }
 574
 575 enum {
 576         /* this is the first blue flame register in the array of bfregs assigned
 577          * to a processes. Since we do not use it for blue flame but rather
 578          * regular 64 bit doorbells, we do not need a lock for maintaiing
 579          * "odd/even" order
 580          */
 581         NUM_NON_BLUE_FLAME_BFREGS = 1,
 582 };
 583
 584 static int max_bfregs(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi)
 585 {
 586         return get_num_static_uars(dev, bfregi) * MLX5_NON_FP_BFREGS_PER_UAR;
 587 }
 588
 589 static int num_med_bfreg(struct mlx5_ib_dev *dev,
 590                          struct mlx5_bfreg_info *bfregi)
 591 {
 592         int n;
 593
 594         n = max_bfregs(dev, bfregi) - bfregi->num_low_latency_bfregs -
 595             NUM_NON_BLUE_FLAME_BFREGS;
 596
 597         return n >= 0 ? n : 0;
 598 }
 599
 600 static int first_med_bfreg(struct mlx5_ib_dev *dev,
 601                            struct mlx5_bfreg_info *bfregi)
 602 {
 603         return num_med_bfreg(dev, bfregi) ? 1 : -ENOMEM;
 604 }
 605
 606 static int first_hi_bfreg(struct mlx5_ib_dev *dev,
 607                           struct mlx5_bfreg_info *bfregi)
 608 {
 609         int med;
 610
 611         med = num_med_bfreg(dev, bfregi);
 612         return ++med;
 613 }
 614
 615 static int alloc_high_class_bfreg(struct mlx5_ib_dev *dev,
 616                                   struct mlx5_bfreg_info *bfregi)
 617 {
 618         int i;
 619
 620         for (i = first_hi_bfreg(dev, bfregi); i < max_bfregs(dev, bfregi); i++) {
 621                 if (!bfregi->count[i]) {
 622                         bfregi->count[i]++;
 623                         return i;
 624                 }
 625         }
 626
 627         return -ENOMEM;
 628 }
 629
 630 static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev,
 631                                  struct mlx5_bfreg_info *bfregi)
 632 {
 633         int minidx = first_med_bfreg(dev, bfregi);
 634         int i;
 635
 636         if (minidx < 0)
 637                 return minidx;
 638
 639         for (i = minidx; i < first_hi_bfreg(dev, bfregi); i++) {
 640                 if (bfregi->count[i] < bfregi->count[minidx])
 641                         minidx = i;
 642                 if (!bfregi->count[minidx])
 643                         break;
 644         }
 645
 646         bfregi->count[minidx]++;
 647         return minidx;
 648 }
 649
 650 static int alloc_bfreg(struct mlx5_ib_dev *dev,
 651                        struct mlx5_bfreg_info *bfregi)
 652 {
 653         int bfregn = -ENOMEM;
 654
 655         mutex_lock(&bfregi->lock);
 656         if (bfregi->ver >= 2) {
 657                 bfregn = alloc_high_class_bfreg(dev, bfregi);
 658                 if (bfregn < 0)
 659                         bfregn = alloc_med_class_bfreg(dev, bfregi);
 660         }
 661
 662         if (bfregn < 0) {
 663                 BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1);
 664                 bfregn = 0;
 665                 bfregi->count[bfregn]++;
 666         }
 667         mutex_unlock(&bfregi->lock);
 668
 669         return bfregn;
 670 }
 671
 672 void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn)
 673 {
 674         mutex_lock(&bfregi->lock);
 675         bfregi->count[bfregn]--;
 676         mutex_unlock(&bfregi->lock);
 677 }
 678
 679 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
 680 {
 681         switch (state) {
 682         case IB_QPS_RESET:      return MLX5_QP_STATE_RST;
 683         case IB_QPS_INIT:       return MLX5_QP_STATE_INIT;
 684         case IB_QPS_RTR:        return MLX5_QP_STATE_RTR;
 685         case IB_QPS_RTS:        return MLX5_QP_STATE_RTS;
 686         case IB_QPS_SQD:        return MLX5_QP_STATE_SQD;
 687         case IB_QPS_SQE:        return MLX5_QP_STATE_SQER;
 688         case IB_QPS_ERR:        return MLX5_QP_STATE_ERR;
 689         default:                return -1;
 690         }
 691 }
 692
 693 static int to_mlx5_st(enum ib_qp_type type)
 694 {
 695         switch (type) {
 696         case IB_QPT_RC:                 return MLX5_QP_ST_RC;
 697         case IB_QPT_UC:                 return MLX5_QP_ST_UC;
 698         case IB_QPT_UD:                 return MLX5_QP_ST_UD;
 699         case MLX5_IB_QPT_REG_UMR:       return MLX5_QP_ST_REG_UMR;
 700         case IB_QPT_XRC_INI:
 701         case IB_QPT_XRC_TGT:            return MLX5_QP_ST_XRC;
 702         case IB_QPT_SMI:                return MLX5_QP_ST_QP0;
 703         case MLX5_IB_QPT_HW_GSI:        return MLX5_QP_ST_QP1;
 704         case MLX5_IB_QPT_DCI:           return MLX5_QP_ST_DCI;
 705         case IB_QPT_RAW_IPV6:           return MLX5_QP_ST_RAW_IPV6;
 706         case IB_QPT_RAW_PACKET:
 707         case IB_QPT_RAW_ETHERTYPE:      return MLX5_QP_ST_RAW_ETHERTYPE;
 708         case IB_QPT_MAX:
 709         default:                return -EINVAL;
 710         }
 711 }
 712
 713 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
 714                              struct mlx5_ib_cq *recv_cq);
 715 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
 716                                struct mlx5_ib_cq *recv_cq);
 717
 718 int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
 719                         struct mlx5_bfreg_info *bfregi, u32 bfregn,
 720                         bool dyn_bfreg)
 721 {
 722         unsigned int bfregs_per_sys_page;
 723         u32 index_of_sys_page;
 724         u32 offset;
 725
 726         bfregs_per_sys_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k) *
 727                                 MLX5_NON_FP_BFREGS_PER_UAR;
 728         index_of_sys_page = bfregn / bfregs_per_sys_page;
 729
 730         if (dyn_bfreg) {
 731                 index_of_sys_page += bfregi->num_static_sys_pages;
 732
 733                 if (index_of_sys_page >= bfregi->num_sys_pages)
 734                         return -EINVAL;
 735
 736                 if (bfregn > bfregi->num_dyn_bfregs ||
 737                     bfregi->sys_pages[index_of_sys_page] == MLX5_IB_INVALID_UAR_INDEX) {
 738                         mlx5_ib_dbg(dev, "Invalid dynamic uar index\n");
 739                         return -EINVAL;
 740                 }
 741         }
 742
 743         offset = bfregn % bfregs_per_sys_page / MLX5_NON_FP_BFREGS_PER_UAR;
 744         return bfregi->sys_pages[index_of_sys_page] + offset;
 745 }
 746
 747 static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev, struct ib_udata *udata,
 748                             unsigned long addr, size_t size,
 749                             struct ib_umem **umem, int *npages, int *page_shift,
 750                             int *ncont, u32 *offset)
 751 {
 752         int err;
 753
 754         *umem = ib_umem_get(udata, addr, size, 0, 0);
 755         if (IS_ERR(*umem)) {
 756                 mlx5_ib_dbg(dev, "umem_get failed\n");
 757                 return PTR_ERR(*umem);
 758         }
 759
 760         mlx5_ib_cont_pages(*umem, addr, 0, npages, page_shift, ncont, NULL);
 761
 762         err = mlx5_ib_get_buf_offset(addr, *page_shift, offset);
 763         if (err) {
 764                 mlx5_ib_warn(dev, "bad offset\n");
 765                 goto err_umem;
 766         }
 767
 768         mlx5_ib_dbg(dev, "addr 0x%lx, size %zu, npages %d, page_shift %d, ncont %d, offset %d\n",
 769                     addr, size, *npages, *page_shift, *ncont, *offset);
 770
 771         return 0;
 772
 773 err_umem:
 774         ib_umem_release(*umem);
 775         *umem = NULL;
 776
 777         return err;
 778 }
 779
 780 static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 781                             struct mlx5_ib_rwq *rwq, struct ib_udata *udata)
 782 {
 783         struct mlx5_ib_ucontext *context =
 784                 rdma_udata_to_drv_context(
 785                         udata,
 786                         struct mlx5_ib_ucontext,
 787                         ibucontext);
 788
 789         if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP)
 790                 atomic_dec(&dev->delay_drop.rqs_cnt);
 791
 792         mlx5_ib_db_unmap_user(context, &rwq->db);
 793         if (rwq->umem)
 794                 ib_umem_release(rwq->umem);
 795 }
 796
 797 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 798                           struct ib_udata *udata, struct mlx5_ib_rwq *rwq,
 799                           struct mlx5_ib_create_wq *ucmd)
 800 {
 801         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
 802                 udata, struct mlx5_ib_ucontext, ibucontext);
 803         int page_shift = 0;
 804         int npages;
 805         u32 offset = 0;
 806         int ncont = 0;
 807         int err;
 808
 809         if (!ucmd->buf_addr)
 810                 return -EINVAL;
 811
 812         rwq->umem = ib_umem_get(udata, ucmd->buf_addr, rwq->buf_size, 0, 0);
 813         if (IS_ERR(rwq->umem)) {
 814                 mlx5_ib_dbg(dev, "umem_get failed\n");
 815                 err = PTR_ERR(rwq->umem);
 816                 return err;
 817         }
 818
 819         mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, 0, &npages, &page_shift,
 820                            &ncont, NULL);
 821         err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
 822                                      &rwq->rq_page_offset);
 823         if (err) {
 824                 mlx5_ib_warn(dev, "bad offset\n");
 825                 goto err_umem;
 826         }
 827
 828         rwq->rq_num_pas = ncont;
 829         rwq->page_shift = page_shift;
 830         rwq->log_page_size =  page_shift - MLX5_ADAPTER_PAGE_SHIFT;
 831         rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
 832
 833         mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
 834                     (unsigned long long)ucmd->buf_addr, rwq->buf_size,
 835                     npages, page_shift, ncont, offset);
 836
 837         err = mlx5_ib_db_map_user(ucontext, udata, ucmd->db_addr, &rwq->db);
 838         if (err) {
 839                 mlx5_ib_dbg(dev, "map failed\n");
 840                 goto err_umem;
 841         }
 842
 843         rwq->create_type = MLX5_WQ_USER;
 844         return 0;
 845
 846 err_umem:
 847         ib_umem_release(rwq->umem);
 848         return err;
 849 }
 850
 851 static int adjust_bfregn(struct mlx5_ib_dev *dev,
 852                          struct mlx5_bfreg_info *bfregi, int bfregn)
 853 {
 854         return bfregn / MLX5_NON_FP_BFREGS_PER_UAR * MLX5_BFREGS_PER_UAR +
 855                                 bfregn % MLX5_NON_FP_BFREGS_PER_UAR;
 856 }
 857
 858 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 859                           struct mlx5_ib_qp *qp, struct ib_udata *udata,
 860                           struct ib_qp_init_attr *attr,
 861                           u32 **in,
 862                           struct mlx5_ib_create_qp_resp *resp, int *inlen,
 863                           struct mlx5_ib_qp_base *base)
 864 {
 865         struct mlx5_ib_ucontext *context;
 866         struct mlx5_ib_create_qp ucmd;
 867         struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
 868         int page_shift = 0;
 869         int uar_index = 0;
 870         int npages;
 871         u32 offset = 0;
 872         int bfregn;
 873         int ncont = 0;
 874         __be64 *pas;
 875         void *qpc;
 876         int err;
 877         u16 uid;
 878
 879         err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
 880         if (err) {
 881                 mlx5_ib_dbg(dev, "copy failed\n");
 882                 return err;
 883         }
 884
 885         context = rdma_udata_to_drv_context(udata, struct mlx5_ib_ucontext,
 886                                             ibucontext);
 887         if (ucmd.flags & MLX5_QP_FLAG_BFREG_INDEX) {
 888                 uar_index = bfregn_to_uar_index(dev, &context->bfregi,
 889                                                 ucmd.bfreg_index, true);
 890                 if (uar_index < 0)
 891                         return uar_index;
 892
 893                 bfregn = MLX5_IB_INVALID_BFREG;
 894         } else if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL) {
 895                 /*
 896                  * TBD: should come from the verbs when we have the API
 897                  */
 898                 /* In CROSS_CHANNEL CQ and QP must use the same UAR */
 899                 bfregn = MLX5_CROSS_CHANNEL_BFREG;
 900         }
 901         else {
 902                 bfregn = alloc_bfreg(dev, &context->bfregi);
 903                 if (bfregn < 0)
 904                         return bfregn;
 905         }
 906
 907         mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index);
 908         if (bfregn != MLX5_IB_INVALID_BFREG)
 909                 uar_index = bfregn_to_uar_index(dev, &context->bfregi, bfregn,
 910                                                 false);
 911
 912         qp->rq.offset = 0;
 913         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 914         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 915
 916         err = set_user_buf_size(dev, qp, &ucmd, base, attr);
 917         if (err)
 918                 goto err_bfreg;
 919
 920         if (ucmd.buf_addr && ubuffer->buf_size) {
 921                 ubuffer->buf_addr = ucmd.buf_addr;
 922                 err = mlx5_ib_umem_get(dev, udata, ubuffer->buf_addr,
 923                                        ubuffer->buf_size, &ubuffer->umem,
 924                                        &npages, &page_shift, &ncont, &offset);
 925                 if (err)
 926                         goto err_bfreg;
 927         } else {
 928                 ubuffer->umem = NULL;
 929         }
 930
 931         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
 932                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont;
 933         *in = kvzalloc(*inlen, GFP_KERNEL);
 934         if (!*in) {
 935                 err = -ENOMEM;
 936                 goto err_umem;
 937         }
 938
 939         uid = (attr->qp_type != IB_QPT_XRC_TGT &&
 940                attr->qp_type != IB_QPT_XRC_INI) ? to_mpd(pd)->uid : 0;
 941         MLX5_SET(create_qp_in, *in, uid, uid);
 942         pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
 943         if (ubuffer->umem)
 944                 mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift, pas, 0);
 945
 946         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
 947
 948         MLX5_SET(qpc, qpc, log_page_size, page_shift - MLX5_ADAPTER_PAGE_SHIFT);
 949         MLX5_SET(qpc, qpc, page_offset, offset);
 950
 951         MLX5_SET(qpc, qpc, uar_page, uar_index);
 952         if (bfregn != MLX5_IB_INVALID_BFREG)
 953                 resp->bfreg_index = adjust_bfregn(dev, &context->bfregi, bfregn);
 954         else
 955                 resp->bfreg_index = MLX5_IB_INVALID_BFREG;
 956         qp->bfregn = bfregn;
 957
 958         err = mlx5_ib_db_map_user(context, udata, ucmd.db_addr, &qp->db);
 959         if (err) {
 960                 mlx5_ib_dbg(dev, "map failed\n");
 961                 goto err_free;
 962         }
 963
 964         err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
 965         if (err) {
 966                 mlx5_ib_dbg(dev, "copy failed\n");
 967                 goto err_unmap;
 968         }
 969         qp->create_type = MLX5_QP_USER;
 970
 971         return 0;
 972
 973 err_unmap:
 974         mlx5_ib_db_unmap_user(context, &qp->db);
 975
 976 err_free:
 977         kvfree(*in);
 978
 979 err_umem:
 980         if (ubuffer->umem)
 981                 ib_umem_release(ubuffer->umem);
 982
 983 err_bfreg:
 984         if (bfregn != MLX5_IB_INVALID_BFREG)
 985                 mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn);
 986         return err;
 987 }
 988
 989 static void destroy_qp_user(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 990                             struct mlx5_ib_qp *qp, struct mlx5_ib_qp_base *base,
 991                             struct ib_udata *udata)
 992 {
 993         struct mlx5_ib_ucontext *context =
 994                 rdma_udata_to_drv_context(
 995                         udata,
 996                         struct mlx5_ib_ucontext,
 997                         ibucontext);
 998
 999         mlx5_ib_db_unmap_user(context, &qp->db);
1000         if (base->ubuffer.umem)
1001                 ib_umem_release(base->ubuffer.umem);
1002
1003         /*
1004          * Free only the BFREGs which are handled by the kernel.
1005          * BFREGs of UARs allocated dynamically are handled by user.
1006          */
1007         if (qp->bfregn != MLX5_IB_INVALID_BFREG)
1008                 mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn);
1009 }
1010
1011 /* get_sq_edge - Get the next nearby edge.
1012  *
1013  * An 'edge' is defined as the first following address after the end
1014  * of the fragment or the SQ. Accordingly, during the WQE construction
1015  * which repetitively increases the pointer to write the next data, it
1016  * simply should check if it gets to an edge.
1017  *
1018  * @sq - SQ buffer.
1019  * @idx - Stride index in the SQ buffer.
1020  *
1021  * Return:
1022  *      The new edge.
1023  */
1024 static void *get_sq_edge(struct mlx5_ib_wq *sq, u32 idx)
1025 {
1026         void *fragment_end;
1027
1028         fragment_end = mlx5_frag_buf_get_wqe
1029                 (&sq->fbc,
1030                  mlx5_frag_buf_get_idx_last_contig_stride(&sq->fbc, idx));
1031
1032         return fragment_end + MLX5_SEND_WQE_BB;
1033 }
1034
1035 static int create_kernel_qp(struct mlx5_ib_dev *dev,
1036                             struct ib_qp_init_attr *init_attr,
1037                             struct mlx5_ib_qp *qp,
1038                             u32 **in, int *inlen,
1039                             struct mlx5_ib_qp_base *base)
1040 {
1041         int uar_index;
1042         void *qpc;
1043         int err;
1044
1045         if (init_attr->create_flags & ~(IB_QP_CREATE_SIGNATURE_EN |
1046                                         IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1047                                         IB_QP_CREATE_IPOIB_UD_LSO |
1048                                         IB_QP_CREATE_NETIF_QP |
1049                                         mlx5_ib_create_qp_sqpn_qp1()))
1050                 return -EINVAL;
1051
1052         if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
1053                 qp->bf.bfreg = &dev->fp_bfreg;
1054         else
1055                 qp->bf.bfreg = &dev->bfreg;
1056
1057         /* We need to divide by two since each register is comprised of
1058          * two buffers of identical size, namely odd and even
1059          */
1060         qp->bf.buf_size = (1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size)) / 2;
1061         uar_index = qp->bf.bfreg->index;
1062
1063         err = calc_sq_size(dev, init_attr, qp);
1064         if (err < 0) {
1065                 mlx5_ib_dbg(dev, "err %d\n", err);
1066                 return err;
1067         }
1068
1069         qp->rq.offset = 0;
1070         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
1071         base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
1072
1073         err = mlx5_frag_buf_alloc_node(dev->mdev, base->ubuffer.buf_size,
1074                                        &qp->buf, dev->mdev->priv.numa_node);
1075         if (err) {
1076                 mlx5_ib_dbg(dev, "err %d\n", err);
1077                 return err;
1078         }
1079
1080         if (qp->rq.wqe_cnt)
1081                 mlx5_init_fbc(qp->buf.frags, qp->rq.wqe_shift,
1082                               ilog2(qp->rq.wqe_cnt), &qp->rq.fbc);
1083
1084         if (qp->sq.wqe_cnt) {
1085                 int sq_strides_offset = (qp->sq.offset  & (PAGE_SIZE - 1)) /
1086                                         MLX5_SEND_WQE_BB;
1087                 mlx5_init_fbc_offset(qp->buf.frags +
1088                                      (qp->sq.offset / PAGE_SIZE),
1089                                      ilog2(MLX5_SEND_WQE_BB),
1090                                      ilog2(qp->sq.wqe_cnt),
1091                                      sq_strides_offset, &qp->sq.fbc);
1092
1093                 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
1094         }
1095
1096         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
1097                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages;
1098         *in = kvzalloc(*inlen, GFP_KERNEL);
1099         if (!*in) {
1100                 err = -ENOMEM;
1101                 goto err_buf;
1102         }
1103
1104         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
1105         MLX5_SET(qpc, qpc, uar_page, uar_index);
1106         MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1107
1108         /* Set "fast registration enabled" for all kernel QPs */
1109         MLX5_SET(qpc, qpc, fre, 1);
1110         MLX5_SET(qpc, qpc, rlky, 1);
1111
1112         if (init_attr->create_flags & mlx5_ib_create_qp_sqpn_qp1()) {
1113                 MLX5_SET(qpc, qpc, deth_sqpn, 1);
1114                 qp->flags |= MLX5_IB_QP_SQPN_QP1;
1115         }
1116
1117         mlx5_fill_page_frag_array(&qp->buf,
1118                                   (__be64 *)MLX5_ADDR_OF(create_qp_in,
1119                                                          *in, pas));
1120
1121         err = mlx5_db_alloc(dev->mdev, &qp->db);
1122         if (err) {
1123                 mlx5_ib_dbg(dev, "err %d\n", err);
1124                 goto err_free;
1125         }
1126
1127         qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
1128                                      sizeof(*qp->sq.wrid), GFP_KERNEL);
1129         qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
1130                                         sizeof(*qp->sq.wr_data), GFP_KERNEL);
1131         qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
1132                                      sizeof(*qp->rq.wrid), GFP_KERNEL);
1133         qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
1134                                        sizeof(*qp->sq.w_list), GFP_KERNEL);
1135         qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
1136                                          sizeof(*qp->sq.wqe_head), GFP_KERNEL);
1137
1138         if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
1139             !qp->sq.w_list || !qp->sq.wqe_head) {
1140                 err = -ENOMEM;
1141                 goto err_wrid;
1142         }
1143         qp->create_type = MLX5_QP_KERNEL;
1144
1145         return 0;
1146
1147 err_wrid:
1148         kvfree(qp->sq.wqe_head);
1149         kvfree(qp->sq.w_list);
1150         kvfree(qp->sq.wrid);
1151         kvfree(qp->sq.wr_data);
1152         kvfree(qp->rq.wrid);
1153         mlx5_db_free(dev->mdev, &qp->db);
1154
1155 err_free:
1156         kvfree(*in);
1157
1158 err_buf:
1159         mlx5_frag_buf_free(dev->mdev, &qp->buf);
1160         return err;
1161 }
1162
1163 static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1164 {
1165         kvfree(qp->sq.wqe_head);
1166         kvfree(qp->sq.w_list);
1167         kvfree(qp->sq.wrid);
1168         kvfree(qp->sq.wr_data);
1169         kvfree(qp->rq.wrid);
1170         mlx5_db_free(dev->mdev, &qp->db);
1171         mlx5_frag_buf_free(dev->mdev, &qp->buf);
1172 }
1173
1174 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
1175 {
1176         if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
1177             (attr->qp_type == MLX5_IB_QPT_DCI) ||
1178             (attr->qp_type == IB_QPT_XRC_INI))
1179                 return MLX5_SRQ_RQ;
1180         else if (!qp->has_rq)
1181                 return MLX5_ZERO_LEN_RQ;
1182         else
1183                 return MLX5_NON_ZERO_RQ;
1184 }
1185
1186 static int is_connected(enum ib_qp_type qp_type)
1187 {
1188         if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC ||
1189             qp_type == MLX5_IB_QPT_DCI)
1190                 return 1;
1191
1192         return 0;
1193 }
1194
1195 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1196                                     struct mlx5_ib_qp *qp,
1197                                     struct mlx5_ib_sq *sq, u32 tdn,
1198                                     struct ib_pd *pd)
1199 {
1200         u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
1201         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1202
1203         MLX5_SET(create_tis_in, in, uid, to_mpd(pd)->uid);
1204         MLX5_SET(tisc, tisc, transport_domain, tdn);
1205         if (qp->flags & MLX5_IB_QP_UNDERLAY)
1206                 MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
1207
1208         return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
1209 }
1210
1211 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1212                                       struct mlx5_ib_sq *sq, struct ib_pd *pd)
1213 {
1214         mlx5_cmd_destroy_tis(dev->mdev, sq->tisn, to_mpd(pd)->uid);
1215 }
1216
1217 static void destroy_flow_rule_vport_sq(struct mlx5_ib_sq *sq)
1218 {
1219         if (sq->flow_rule)
1220                 mlx5_del_flow_rules(sq->flow_rule);
1221         sq->flow_rule = NULL;
1222 }
1223
1224 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1225                                    struct ib_udata *udata,
1226                                    struct mlx5_ib_sq *sq, void *qpin,
1227                                    struct ib_pd *pd)
1228 {
1229         struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1230         __be64 *pas;
1231         void *in;
1232         void *sqc;
1233         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1234         void *wq;
1235         int inlen;
1236         int err;
1237         int page_shift = 0;
1238         int npages;
1239         int ncont = 0;
1240         u32 offset = 0;
1241
1242         err = mlx5_ib_umem_get(dev, udata, ubuffer->buf_addr, ubuffer->buf_size,
1243                                &sq->ubuffer.umem, &npages, &page_shift, &ncont,
1244                                &offset);
1245         if (err)
1246                 return err;
1247
1248         inlen = MLX5_ST_SZ_BYTES(create_sq_in) + sizeof(u64) * ncont;
1249         in = kvzalloc(inlen, GFP_KERNEL);
1250         if (!in) {
1251                 err = -ENOMEM;
1252                 goto err_umem;
1253         }
1254
1255         MLX5_SET(create_sq_in, in, uid, to_mpd(pd)->uid);
1256         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1257         MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1258         if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
1259                 MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
1260         MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1261         MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1262         MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1263         MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1264         MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1265         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
1266             MLX5_CAP_ETH(dev->mdev, swp))
1267                 MLX5_SET(sqc, sqc, allow_swp, 1);
1268
1269         wq = MLX5_ADDR_OF(sqc, sqc, wq);
1270         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1271         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1272         MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1273         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1274         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1275         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1276         MLX5_SET(wq, wq, log_wq_pg_sz,  page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1277         MLX5_SET(wq, wq, page_offset, offset);
1278
1279         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1280         mlx5_ib_populate_pas(dev, sq->ubuffer.umem, page_shift, pas, 0);
1281
1282         err = mlx5_core_create_sq_tracked(dev->mdev, in, inlen, &sq->base.mqp);
1283
1284         kvfree(in);
1285
1286         if (err)
1287                 goto err_umem;
1288
1289         return 0;
1290
1291 err_umem:
1292         ib_umem_release(sq->ubuffer.umem);
1293         sq->ubuffer.umem = NULL;
1294
1295         return err;
1296 }
1297
1298 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1299                                      struct mlx5_ib_sq *sq)
1300 {
1301         destroy_flow_rule_vport_sq(sq);
1302         mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
1303         ib_umem_release(sq->ubuffer.umem);
1304 }
1305
1306 static size_t get_rq_pas_size(void *qpc)
1307 {
1308         u32 log_page_size = MLX5_GET(qpc, qpc, log_page_size) + 12;
1309         u32 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride);
1310         u32 log_rq_size   = MLX5_GET(qpc, qpc, log_rq_size);
1311         u32 page_offset   = MLX5_GET(qpc, qpc, page_offset);
1312         u32 po_quanta     = 1 << (log_page_size - 6);
1313         u32 rq_sz         = 1 << (log_rq_size + 4 + log_rq_stride);
1314         u32 page_size     = 1 << log_page_size;
1315         u32 rq_sz_po      = rq_sz + (page_offset * po_quanta);
1316         u32 rq_num_pas    = (rq_sz_po + page_size - 1) / page_size;
1317
1318         return rq_num_pas * sizeof(u64);
1319 }
1320
1321 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1322                                    struct mlx5_ib_rq *rq, void *qpin,
1323                                    size_t qpinlen, struct ib_pd *pd)
1324 {
1325         struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1326         __be64 *pas;
1327         __be64 *qp_pas;
1328         void *in;
1329         void *rqc;
1330         void *wq;
1331         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1332         size_t rq_pas_size = get_rq_pas_size(qpc);
1333         size_t inlen;
1334         int err;
1335
1336         if (qpinlen < rq_pas_size + MLX5_BYTE_OFF(create_qp_in, pas))
1337                 return -EINVAL;
1338
1339         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
1340         in = kvzalloc(inlen, GFP_KERNEL);
1341         if (!in)
1342                 return -ENOMEM;
1343
1344         MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
1345         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1346         if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING))
1347                 MLX5_SET(rqc, rqc, vsd, 1);
1348         MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1349         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1350         MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1351         MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1352         MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1353
1354         if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)
1355                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1356
1357         wq = MLX5_ADDR_OF(rqc, rqc, wq);
1358         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1359         if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING)
1360                 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1361         MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
1362         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1363         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1364         MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1365         MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(qpc, qpc, log_page_size));
1366         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1367
1368         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1369         qp_pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, qpin, pas);
1370         memcpy(pas, qp_pas, rq_pas_size);
1371
1372         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rq->base.mqp);
1373
1374         kvfree(in);
1375
1376         return err;
1377 }
1378
1379 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1380                                      struct mlx5_ib_rq *rq)
1381 {
1382         mlx5_core_destroy_rq_tracked(dev->mdev, &rq->base.mqp);
1383 }
1384
1385 static bool tunnel_offload_supported(struct mlx5_core_dev *dev)
1386 {
1387         return  (MLX5_CAP_ETH(dev, tunnel_stateless_vxlan) ||
1388                  MLX5_CAP_ETH(dev, tunnel_stateless_gre) ||
1389                  MLX5_CAP_ETH(dev, tunnel_stateless_geneve_rx));
1390 }
1391
1392 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1393                                       struct mlx5_ib_rq *rq,
1394                                       u32 qp_flags_en,
1395                                       struct ib_pd *pd)
1396 {
1397         if (qp_flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1398                            MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1399                 mlx5_ib_disable_lb(dev, false, true);
1400         mlx5_cmd_destroy_tir(dev->mdev, rq->tirn, to_mpd(pd)->uid);
1401 }
1402
1403 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1404                                     struct mlx5_ib_rq *rq, u32 tdn,
1405                                     u32 *qp_flags_en,
1406                                     struct ib_pd *pd,
1407                                     u32 *out, int outlen)
1408 {
1409         u8 lb_flag = 0;
1410         u32 *in;
1411         void *tirc;
1412         int inlen;
1413         int err;
1414
1415         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1416         in = kvzalloc(inlen, GFP_KERNEL);
1417         if (!in)
1418                 return -ENOMEM;
1419
1420         MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1421         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1422         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1423         MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1424         MLX5_SET(tirc, tirc, transport_domain, tdn);
1425         if (*qp_flags_en & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1426                 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1427
1428         if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
1429                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1430
1431         if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
1432                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1433
1434         if (dev->is_rep) {
1435                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1436                 *qp_flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1437         }
1438
1439         MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1440
1441         err = mlx5_core_create_tir_out(dev->mdev, in, inlen, out, outlen);
1442
1443         rq->tirn = MLX5_GET(create_tir_out, out, tirn);
1444         if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1445                 err = mlx5_ib_enable_lb(dev, false, true);
1446
1447                 if (err)
1448                         destroy_raw_packet_qp_tir(dev, rq, 0, pd);
1449         }
1450         kvfree(in);
1451
1452         return err;
1453 }
1454
1455 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1456                                 u32 *in, size_t inlen,
1457                                 struct ib_pd *pd,
1458                                 struct ib_udata *udata,
1459                                 struct mlx5_ib_create_qp_resp *resp)
1460 {
1461         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1462         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1463         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1464         struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1465                 udata, struct mlx5_ib_ucontext, ibucontext);
1466         int err;
1467         u32 tdn = mucontext->tdn;
1468         u16 uid = to_mpd(pd)->uid;
1469         u32 out[MLX5_ST_SZ_DW(create_tir_out)] = {};
1470
1471         if (qp->sq.wqe_cnt) {
1472                 err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd);
1473                 if (err)
1474                         return err;
1475
1476                 err = create_raw_packet_qp_sq(dev, udata, sq, in, pd);
1477                 if (err)
1478                         goto err_destroy_tis;
1479
1480                 if (uid) {
1481                         resp->tisn = sq->tisn;
1482                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN;
1483                         resp->sqn = sq->base.mqp.qpn;
1484                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN;
1485                 }
1486
1487                 sq->base.container_mibqp = qp;
1488                 sq->base.mqp.event = mlx5_ib_qp_event;
1489         }
1490
1491         if (qp->rq.wqe_cnt) {
1492                 rq->base.container_mibqp = qp;
1493
1494                 if (qp->flags & MLX5_IB_QP_CVLAN_STRIPPING)
1495                         rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING;
1496                 if (qp->flags & MLX5_IB_QP_PCI_WRITE_END_PADDING)
1497                         rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING;
1498                 err = create_raw_packet_qp_rq(dev, rq, in, inlen, pd);
1499                 if (err)
1500                         goto err_destroy_sq;
1501
1502                 err = create_raw_packet_qp_tir(
1503                         dev, rq, tdn, &qp->flags_en, pd, out,
1504                         MLX5_ST_SZ_BYTES(create_tir_out));
1505                 if (err)
1506                         goto err_destroy_rq;
1507
1508                 if (uid) {
1509                         resp->rqn = rq->base.mqp.qpn;
1510                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN;
1511                         resp->tirn = rq->tirn;
1512                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1513                         if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner)) {
1514                                 resp->tir_icm_addr = MLX5_GET(
1515                                         create_tir_out, out, icm_address_31_0);
1516                                 resp->tir_icm_addr |=
1517                                         (u64)MLX5_GET(create_tir_out, out,
1518                                                       icm_address_39_32)
1519                                         << 32;
1520                                 resp->tir_icm_addr |=
1521                                         (u64)MLX5_GET(create_tir_out, out,
1522                                                       icm_address_63_40)
1523                                         << 40;
1524                                 resp->comp_mask |=
1525                                         MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1526                         }
1527                 }
1528         }
1529
1530         qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1531                                                      rq->base.mqp.qpn;
1532         err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
1533         if (err)
1534                 goto err_destroy_tir;
1535
1536         return 0;
1537
1538 err_destroy_tir:
1539         destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, pd);
1540 err_destroy_rq:
1541         destroy_raw_packet_qp_rq(dev, rq);
1542 err_destroy_sq:
1543         if (!qp->sq.wqe_cnt)
1544                 return err;
1545         destroy_raw_packet_qp_sq(dev, sq);
1546 err_destroy_tis:
1547         destroy_raw_packet_qp_tis(dev, sq, pd);
1548
1549         return err;
1550 }
1551
1552 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1553                                   struct mlx5_ib_qp *qp)
1554 {
1555         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1556         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1557         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1558
1559         if (qp->rq.wqe_cnt) {
1560                 destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, qp->ibqp.pd);
1561                 destroy_raw_packet_qp_rq(dev, rq);
1562         }
1563
1564         if (qp->sq.wqe_cnt) {
1565                 destroy_raw_packet_qp_sq(dev, sq);
1566                 destroy_raw_packet_qp_tis(dev, sq, qp->ibqp.pd);
1567         }
1568 }
1569
1570 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1571                                     struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1572 {
1573         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1574         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1575
1576         sq->sq = &qp->sq;
1577         rq->rq = &qp->rq;
1578         sq->doorbell = &qp->db;
1579         rq->doorbell = &qp->db;
1580 }
1581
1582 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1583 {
1584         if (qp->flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1585                             MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1586                 mlx5_ib_disable_lb(dev, false, true);
1587         mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1588                              to_mpd(qp->ibqp.pd)->uid);
1589 }
1590
1591 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1592                                  struct ib_pd *pd,
1593                                  struct ib_qp_init_attr *init_attr,
1594                                  struct ib_udata *udata)
1595 {
1596         struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1597                 udata, struct mlx5_ib_ucontext, ibucontext);
1598         struct mlx5_ib_create_qp_resp resp = {};
1599         int inlen;
1600         int outlen;
1601         int err;
1602         u32 *in;
1603         u32 *out;
1604         void *tirc;
1605         void *hfso;
1606         u32 selected_fields = 0;
1607         u32 outer_l4;
1608         size_t min_resp_len;
1609         u32 tdn = mucontext->tdn;
1610         struct mlx5_ib_create_qp_rss ucmd = {};
1611         size_t required_cmd_sz;
1612         u8 lb_flag = 0;
1613
1614         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1615                 return -EOPNOTSUPP;
1616
1617         if (init_attr->create_flags || init_attr->send_cq)
1618                 return -EINVAL;
1619
1620         min_resp_len = offsetof(typeof(resp), bfreg_index) + sizeof(resp.bfreg_index);
1621         if (udata->outlen < min_resp_len)
1622                 return -EINVAL;
1623
1624         required_cmd_sz = offsetof(typeof(ucmd), flags) + sizeof(ucmd.flags);
1625         if (udata->inlen < required_cmd_sz) {
1626                 mlx5_ib_dbg(dev, "invalid inlen\n");
1627                 return -EINVAL;
1628         }
1629
1630         if (udata->inlen > sizeof(ucmd) &&
1631             !ib_is_udata_cleared(udata, sizeof(ucmd),
1632                                  udata->inlen - sizeof(ucmd))) {
1633                 mlx5_ib_dbg(dev, "inlen is not supported\n");
1634                 return -EOPNOTSUPP;
1635         }
1636
1637         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
1638                 mlx5_ib_dbg(dev, "copy failed\n");
1639                 return -EFAULT;
1640         }
1641
1642         if (ucmd.comp_mask) {
1643                 mlx5_ib_dbg(dev, "invalid comp mask\n");
1644                 return -EOPNOTSUPP;
1645         }
1646
1647         if (ucmd.flags & ~(MLX5_QP_FLAG_TUNNEL_OFFLOADS |
1648                            MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1649                            MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)) {
1650                 mlx5_ib_dbg(dev, "invalid flags\n");
1651                 return -EOPNOTSUPP;
1652         }
1653
1654         if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS &&
1655             !tunnel_offload_supported(dev->mdev)) {
1656                 mlx5_ib_dbg(dev, "tunnel offloads isn't supported\n");
1657                 return -EOPNOTSUPP;
1658         }
1659
1660         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
1661             !(ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
1662                 mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
1663                 return -EOPNOTSUPP;
1664         }
1665
1666         if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC || dev->is_rep) {
1667                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1668                 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1669         }
1670
1671         if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) {
1672                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1673                 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC;
1674         }
1675
1676         err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
1677         if (err) {
1678                 mlx5_ib_dbg(dev, "copy failed\n");
1679                 return -EINVAL;
1680         }
1681
1682         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1683         outlen = MLX5_ST_SZ_BYTES(create_tir_out);
1684         in = kvzalloc(inlen + outlen, GFP_KERNEL);
1685         if (!in)
1686                 return -ENOMEM;
1687
1688         out = in + MLX5_ST_SZ_DW(create_tir_in);
1689         MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1690         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1691         MLX5_SET(tirc, tirc, disp_type,
1692                  MLX5_TIRC_DISP_TYPE_INDIRECT);
1693         MLX5_SET(tirc, tirc, indirect_table,
1694                  init_attr->rwq_ind_tbl->ind_tbl_num);
1695         MLX5_SET(tirc, tirc, transport_domain, tdn);
1696
1697         hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1698
1699         if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1700                 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1701
1702         MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1703
1704         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER)
1705                 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
1706         else
1707                 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1708
1709         switch (ucmd.rx_hash_function) {
1710         case MLX5_RX_HASH_FUNC_TOEPLITZ:
1711         {
1712                 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1713                 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1714
1715                 if (len != ucmd.rx_key_len) {
1716                         err = -EINVAL;
1717                         goto err;
1718                 }
1719
1720                 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1721                 MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
1722                 memcpy(rss_key, ucmd.rx_hash_key, len);
1723                 break;
1724         }
1725         default:
1726                 err = -EOPNOTSUPP;
1727                 goto err;
1728         }
1729
1730         if (!ucmd.rx_hash_fields_mask) {
1731                 /* special case when this TIR serves as steering entry without hashing */
1732                 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1733                         goto create_tir;
1734                 err = -EINVAL;
1735                 goto err;
1736         }
1737
1738         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1739              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1740              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1741              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1742                 err = -EINVAL;
1743                 goto err;
1744         }
1745
1746         /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1747         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1748             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1749                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1750                          MLX5_L3_PROT_TYPE_IPV4);
1751         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1752                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1753                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1754                          MLX5_L3_PROT_TYPE_IPV6);
1755
1756         outer_l4 = ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1757                     (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) << 0 |
1758                    ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1759                     (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) << 1 |
1760                    (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2;
1761
1762         /* Check that only one l4 protocol is set */
1763         if (outer_l4 & (outer_l4 - 1)) {
1764                 err = -EINVAL;
1765                 goto err;
1766         }
1767
1768         /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1769         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1770             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1771                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1772                          MLX5_L4_PROT_TYPE_TCP);
1773         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1774                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1775                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1776                          MLX5_L4_PROT_TYPE_UDP);
1777
1778         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1779             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1780                 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1781
1782         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1783             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1784                 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1785
1786         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1787             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1788                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1789
1790         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1791             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1792                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1793
1794         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI)
1795                 selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI;
1796
1797         MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1798
1799 create_tir:
1800         err = mlx5_core_create_tir_out(dev->mdev, in, inlen, out, outlen);
1801
1802         qp->rss_qp.tirn = MLX5_GET(create_tir_out, out, tirn);
1803         if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1804                 err = mlx5_ib_enable_lb(dev, false, true);
1805
1806                 if (err)
1807                         mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1808                                              to_mpd(pd)->uid);
1809         }
1810
1811         if (err)
1812                 goto err;
1813
1814         if (mucontext->devx_uid) {
1815                 resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1816                 resp.tirn = qp->rss_qp.tirn;
1817                 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner)) {
1818                         resp.tir_icm_addr =
1819                                 MLX5_GET(create_tir_out, out, icm_address_31_0);
1820                         resp.tir_icm_addr |= (u64)MLX5_GET(create_tir_out, out,
1821                                                            icm_address_39_32)
1822                                              << 32;
1823                         resp.tir_icm_addr |= (u64)MLX5_GET(create_tir_out, out,
1824                                                            icm_address_63_40)
1825                                              << 40;
1826                         resp.comp_mask |=
1827                                 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1828                 }
1829         }
1830
1831         err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
1832         if (err)
1833                 goto err_copy;
1834
1835         kvfree(in);
1836         /* qpn is reserved for that QP */
1837         qp->trans_qp.base.mqp.qpn = 0;
1838         qp->flags |= MLX5_IB_QP_RSS;
1839         return 0;
1840
1841 err_copy:
1842         mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn, mucontext->devx_uid);
1843 err:
1844         kvfree(in);
1845         return err;
1846 }
1847
1848 static void configure_responder_scat_cqe(struct ib_qp_init_attr *init_attr,
1849                                          void *qpc)
1850 {
1851         int rcqe_sz;
1852
1853         if (init_attr->qp_type == MLX5_IB_QPT_DCI)
1854                 return;
1855
1856         rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq);
1857
1858         if (init_attr->qp_type == MLX5_IB_QPT_DCT) {
1859                 if (rcqe_sz == 128)
1860                         MLX5_SET(dctc, qpc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
1861
1862                 return;
1863         }
1864
1865         MLX5_SET(qpc, qpc, cs_res,
1866                  rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
1867                                   MLX5_RES_SCAT_DATA32_CQE);
1868 }
1869
1870 static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
1871                                          struct ib_qp_init_attr *init_attr,
1872                                          struct mlx5_ib_create_qp *ucmd,
1873                                          void *qpc)
1874 {
1875         enum ib_qp_type qpt = init_attr->qp_type;
1876         int scqe_sz;
1877         bool allow_scat_cqe = 0;
1878
1879         if (qpt == IB_QPT_UC || qpt == IB_QPT_UD)
1880                 return;
1881
1882         if (ucmd)
1883                 allow_scat_cqe = ucmd->flags & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
1884
1885         if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR)
1886                 return;
1887
1888         scqe_sz = mlx5_ib_get_cqe_size(init_attr->send_cq);
1889         if (scqe_sz == 128) {
1890                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
1891                 return;
1892         }
1893
1894         if (init_attr->qp_type != MLX5_IB_QPT_DCI ||
1895             MLX5_CAP_GEN(dev->mdev, dc_req_scat_data_cqe))
1896                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
1897 }
1898
1899 static int atomic_size_to_mode(int size_mask)
1900 {
1901         /* driver does not support atomic_size > 256B
1902          * and does not know how to translate bigger sizes
1903          */
1904         int supported_size_mask = size_mask & 0x1ff;
1905         int log_max_size;
1906
1907         if (!supported_size_mask)
1908                 return -EOPNOTSUPP;
1909
1910         log_max_size = __fls(supported_size_mask);
1911
1912         if (log_max_size > 3)
1913                 return log_max_size;
1914
1915         return MLX5_ATOMIC_MODE_8B;
1916 }
1917
1918 static int get_atomic_mode(struct mlx5_ib_dev *dev,
1919                            enum ib_qp_type qp_type)
1920 {
1921         u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
1922         u8 atomic = MLX5_CAP_GEN(dev->mdev, atomic);
1923         int atomic_mode = -EOPNOTSUPP;
1924         int atomic_size_mask;
1925
1926         if (!atomic)
1927                 return -EOPNOTSUPP;
1928
1929         if (qp_type == MLX5_IB_QPT_DCT)
1930                 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
1931         else
1932                 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
1933
1934         if ((atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_CMP_SWAP) ||
1935             (atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_FETCH_ADD))
1936                 atomic_mode = atomic_size_to_mode(atomic_size_mask);
1937
1938         if (atomic_mode <= 0 &&
1939             (atomic_operations & MLX5_ATOMIC_OPS_CMP_SWAP &&
1940              atomic_operations & MLX5_ATOMIC_OPS_FETCH_ADD))
1941                 atomic_mode = MLX5_ATOMIC_MODE_IB_COMP;
1942
1943         return atomic_mode;
1944 }
1945
1946 static inline bool check_flags_mask(uint64_t input, uint64_t supported)
1947 {
1948         return (input & ~supported) == 0;
1949 }
1950
1951 static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1952                             struct ib_qp_init_attr *init_attr,
1953                             struct ib_udata *udata, struct mlx5_ib_qp *qp)
1954 {
1955         struct mlx5_ib_resources *devr = &dev->devr;
1956         int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1957         struct mlx5_core_dev *mdev = dev->mdev;
1958         struct mlx5_ib_create_qp_resp resp = {};
1959         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
1960                 udata, struct mlx5_ib_ucontext, ibucontext);
1961         struct mlx5_ib_cq *send_cq;
1962         struct mlx5_ib_cq *recv_cq;
1963         unsigned long flags;
1964         u32 uidx = MLX5_IB_DEFAULT_UIDX;
1965         struct mlx5_ib_create_qp ucmd;
1966         struct mlx5_ib_qp_base *base;
1967         int mlx5_st;
1968         void *qpc;
1969         u32 *in;
1970         int err;
1971
1972         mutex_init(&qp->mutex);
1973         spin_lock_init(&qp->sq.lock);
1974         spin_lock_init(&qp->rq.lock);
1975
1976         mlx5_st = to_mlx5_st(init_attr->qp_type);
1977         if (mlx5_st < 0)
1978                 return -EINVAL;
1979
1980         if (init_attr->rwq_ind_tbl) {
1981                 if (!udata)
1982                         return -ENOSYS;
1983
1984                 err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
1985                 return err;
1986         }
1987
1988         if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
1989                 if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
1990                         mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
1991                         return -EINVAL;
1992                 } else {
1993                         qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
1994                 }
1995         }
1996
1997         if (init_attr->create_flags &
1998                         (IB_QP_CREATE_CROSS_CHANNEL |
1999                          IB_QP_CREATE_MANAGED_SEND |
2000                          IB_QP_CREATE_MANAGED_RECV)) {
2001                 if (!MLX5_CAP_GEN(mdev, cd)) {
2002                         mlx5_ib_dbg(dev, "cross-channel isn't supported\n");
2003                         return -EINVAL;
2004                 }
2005                 if (init_attr->create_flags & IB_QP_CREATE_CROSS_CHANNEL)
2006                         qp->flags |= MLX5_IB_QP_CROSS_CHANNEL;
2007                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_SEND)
2008                         qp->flags |= MLX5_IB_QP_MANAGED_SEND;
2009                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_RECV)
2010                         qp->flags |= MLX5_IB_QP_MANAGED_RECV;
2011         }
2012
2013         if (init_attr->qp_type == IB_QPT_UD &&
2014             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO))
2015                 if (!MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
2016                         mlx5_ib_dbg(dev, "ipoib UD lso qp isn't supported\n");
2017                         return -EOPNOTSUPP;
2018                 }
2019
2020         if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {
2021                 if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2022                         mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");
2023                         return -EOPNOTSUPP;
2024                 }
2025                 if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||
2026                     !MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
2027                         mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");
2028                         return -EOPNOTSUPP;
2029                 }
2030                 qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;
2031         }
2032
2033         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
2034                 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
2035
2036         if (init_attr->create_flags & IB_QP_CREATE_CVLAN_STRIPPING) {
2037                 if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
2038                       MLX5_CAP_ETH(dev->mdev, vlan_cap)) ||
2039                     (init_attr->qp_type != IB_QPT_RAW_PACKET))
2040                         return -EOPNOTSUPP;
2041                 qp->flags |= MLX5_IB_QP_CVLAN_STRIPPING;
2042         }
2043
2044         if (udata) {
2045                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
2046                         mlx5_ib_dbg(dev, "copy failed\n");
2047                         return -EFAULT;
2048                 }
2049
2050                 if (!check_flags_mask(ucmd.flags,
2051                                       MLX5_QP_FLAG_ALLOW_SCATTER_CQE |
2052                                       MLX5_QP_FLAG_BFREG_INDEX |
2053                                       MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE |
2054                                       MLX5_QP_FLAG_SCATTER_CQE |
2055                                       MLX5_QP_FLAG_SIGNATURE |
2056                                       MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC |
2057                                       MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
2058                                       MLX5_QP_FLAG_TUNNEL_OFFLOADS |
2059                                       MLX5_QP_FLAG_TYPE_DCI |
2060                                       MLX5_QP_FLAG_TYPE_DCT))
2061                         return -EINVAL;
2062
2063                 err = get_qp_user_index(ucontext, &ucmd, udata->inlen, &uidx);
2064                 if (err)
2065                         return err;
2066
2067                 qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
2068                 if (MLX5_CAP_GEN(dev->mdev, sctr_data_cqe))
2069                         qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
2070                 if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS) {
2071                         if (init_attr->qp_type != IB_QPT_RAW_PACKET ||
2072                             !tunnel_offload_supported(mdev)) {
2073                                 mlx5_ib_dbg(dev, "Tunnel offload isn't supported\n");
2074                                 return -EOPNOTSUPP;
2075                         }
2076                         qp->flags_en |= MLX5_QP_FLAG_TUNNEL_OFFLOADS;
2077                 }
2078
2079                 if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC) {
2080                         if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2081                                 mlx5_ib_dbg(dev, "Self-LB UC isn't supported\n");
2082                                 return -EOPNOTSUPP;
2083                         }
2084                         qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
2085                 }
2086
2087                 if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) {
2088                         if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2089                                 mlx5_ib_dbg(dev, "Self-LB UM isn't supported\n");
2090                                 return -EOPNOTSUPP;
2091                         }
2092                         qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC;
2093                 }
2094
2095                 if (ucmd.flags & MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE) {
2096                         if (init_attr->qp_type != IB_QPT_RC ||
2097                                 !MLX5_CAP_GEN(dev->mdev, qp_packet_based)) {
2098                                 mlx5_ib_dbg(dev, "packet based credit mode isn't supported\n");
2099                                 return -EOPNOTSUPP;
2100                         }
2101                         qp->flags |= MLX5_IB_QP_PACKET_BASED_CREDIT;
2102                 }
2103
2104                 if (init_attr->create_flags & IB_QP_CREATE_SOURCE_QPN) {
2105                         if (init_attr->qp_type != IB_QPT_UD ||
2106                             (MLX5_CAP_GEN(dev->mdev, port_type) !=
2107                              MLX5_CAP_PORT_TYPE_IB) ||
2108                             !mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) {
2109                                 mlx5_ib_dbg(dev, "Source QP option isn't supported\n");
2110                                 return -EOPNOTSUPP;
2111                         }
2112
2113                         qp->flags |= MLX5_IB_QP_UNDERLAY;
2114                         qp->underlay_qpn = init_attr->source_qpn;
2115                 }
2116         } else {
2117                 qp->wq_sig = !!wq_signature;
2118         }
2119
2120         base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2121                 qp->flags & MLX5_IB_QP_UNDERLAY) ?
2122                &qp->raw_packet_qp.rq.base :
2123                &qp->trans_qp.base;
2124
2125         qp->has_rq = qp_has_rq(init_attr);
2126         err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
2127                           qp, udata ? &ucmd : NULL);
2128         if (err) {
2129                 mlx5_ib_dbg(dev, "err %d\n", err);
2130                 return err;
2131         }
2132
2133         if (pd) {
2134                 if (udata) {
2135                         __u32 max_wqes =
2136                                 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
2137                         mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
2138                         if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
2139                             ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
2140                                 mlx5_ib_dbg(dev, "invalid rq params\n");
2141                                 return -EINVAL;
2142                         }
2143                         if (ucmd.sq_wqe_count > max_wqes) {
2144                                 mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
2145                                             ucmd.sq_wqe_count, max_wqes);
2146                                 return -EINVAL;
2147                         }
2148                         if (init_attr->create_flags &
2149                             mlx5_ib_create_qp_sqpn_qp1()) {
2150                                 mlx5_ib_dbg(dev, "user-space is not allowed to create UD QPs spoofing as QP1\n");
2151                                 return -EINVAL;
2152                         }
2153                         err = create_user_qp(dev, pd, qp, udata, init_attr, &in,
2154                                              &resp, &inlen, base);
2155                         if (err)
2156                                 mlx5_ib_dbg(dev, "err %d\n", err);
2157                 } else {
2158                         err = create_kernel_qp(dev, init_attr, qp, &in, &inlen,
2159                                                base);
2160                         if (err)
2161                                 mlx5_ib_dbg(dev, "err %d\n", err);
2162                 }
2163
2164                 if (err)
2165                         return err;
2166         } else {
2167                 in = kvzalloc(inlen, GFP_KERNEL);
2168                 if (!in)
2169                         return -ENOMEM;
2170
2171                 qp->create_type = MLX5_QP_EMPTY;
2172         }
2173
2174         if (is_sqp(init_attr->qp_type))
2175                 qp->port = init_attr->port_num;
2176
2177         qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
2178
2179         MLX5_SET(qpc, qpc, st, mlx5_st);
2180         MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
2181
2182         if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
2183                 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
2184         else
2185                 MLX5_SET(qpc, qpc, latency_sensitive, 1);
2186
2187
2188         if (qp->wq_sig)
2189                 MLX5_SET(qpc, qpc, wq_signature, 1);
2190
2191         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
2192                 MLX5_SET(qpc, qpc, block_lb_mc, 1);
2193
2194         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
2195                 MLX5_SET(qpc, qpc, cd_master, 1);
2196         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
2197                 MLX5_SET(qpc, qpc, cd_slave_send, 1);
2198         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
2199                 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
2200         if (qp->flags & MLX5_IB_QP_PACKET_BASED_CREDIT)
2201                 MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1);
2202         if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
2203                 configure_responder_scat_cqe(init_attr, qpc);
2204                 configure_requester_scat_cqe(dev, init_attr,
2205                                              udata ? &ucmd : NULL,
2206                                              qpc);
2207         }
2208
2209         if (qp->rq.wqe_cnt) {
2210                 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
2211                 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
2212         }
2213
2214         MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
2215
2216         if (qp->sq.wqe_cnt) {
2217                 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
2218         } else {
2219                 MLX5_SET(qpc, qpc, no_sq, 1);
2220                 if (init_attr->srq &&
2221                     init_attr->srq->srq_type == IB_SRQT_TM)
2222                         MLX5_SET(qpc, qpc, offload_type,
2223                                  MLX5_QPC_OFFLOAD_TYPE_RNDV);
2224         }
2225
2226         /* Set default resources */
2227         switch (init_attr->qp_type) {
2228         case IB_QPT_XRC_TGT:
2229                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
2230                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
2231                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
2232                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(init_attr->xrcd)->xrcdn);
2233                 break;
2234         case IB_QPT_XRC_INI:
2235                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
2236                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
2237                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
2238                 break;
2239         default:
2240                 if (init_attr->srq) {
2241                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x0)->xrcdn);
2242                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
2243                 } else {
2244                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
2245                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
2246                 }
2247         }
2248
2249         if (init_attr->send_cq)
2250                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
2251
2252         if (init_attr->recv_cq)
2253                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
2254
2255         MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
2256
2257         /* 0xffffff means we ask to work with cqe version 0 */
2258         if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
2259                 MLX5_SET(qpc, qpc, user_index, uidx);
2260
2261         /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
2262         if (init_attr->qp_type == IB_QPT_UD &&
2263             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)) {
2264                 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
2265                 qp->flags |= MLX5_IB_QP_LSO;
2266         }
2267
2268         if (init_attr->create_flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) {
2269                 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
2270                         mlx5_ib_dbg(dev, "scatter end padding is not supported\n");
2271                         err = -EOPNOTSUPP;
2272                         goto err;
2273                 } else if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2274                         MLX5_SET(qpc, qpc, end_padding_mode,
2275                                  MLX5_WQ_END_PAD_MODE_ALIGN);
2276                 } else {
2277                         qp->flags |= MLX5_IB_QP_PCI_WRITE_END_PADDING;
2278                 }
2279         }
2280
2281         if (inlen < 0) {
2282                 err = -EINVAL;
2283                 goto err;
2284         }
2285
2286         if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2287             qp->flags & MLX5_IB_QP_UNDERLAY) {
2288                 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
2289                 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
2290                 err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata,
2291                                            &resp);
2292         } else {
2293                 err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen);
2294         }
2295
2296         if (err) {
2297                 mlx5_ib_dbg(dev, "create qp failed\n");
2298                 goto err_create;
2299         }
2300
2301         kvfree(in);
2302
2303         base->container_mibqp = qp;
2304         base->mqp.event = mlx5_ib_qp_event;
2305
2306         get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
2307                 &send_cq, &recv_cq);
2308         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2309         mlx5_ib_lock_cqs(send_cq, recv_cq);
2310         /* Maintain device to QPs access, needed for further handling via reset
2311          * flow
2312          */
2313         list_add_tail(&qp->qps_list, &dev->qp_list);
2314         /* Maintain CQ to QPs access, needed for further handling via reset flow
2315          */
2316         if (send_cq)
2317                 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
2318         if (recv_cq)
2319                 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
2320         mlx5_ib_unlock_cqs(send_cq, recv_cq);
2321         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2322
2323         return 0;
2324
2325 err_create:
2326         if (qp->create_type == MLX5_QP_USER)
2327                 destroy_qp_user(dev, pd, qp, base, udata);
2328         else if (qp->create_type == MLX5_QP_KERNEL)
2329                 destroy_qp_kernel(dev, qp);
2330
2331 err:
2332         kvfree(in);
2333         return err;
2334 }
2335
2336 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2337         __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
2338 {
2339         if (send_cq) {
2340                 if (recv_cq) {
2341                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
2342                                 spin_lock(&send_cq->lock);
2343                                 spin_lock_nested(&recv_cq->lock,
2344                                                  SINGLE_DEPTH_NESTING);
2345                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2346                                 spin_lock(&send_cq->lock);
2347                                 __acquire(&recv_cq->lock);
2348                         } else {
2349                                 spin_lock(&recv_cq->lock);
2350                                 spin_lock_nested(&send_cq->lock,
2351                                                  SINGLE_DEPTH_NESTING);
2352                         }
2353                 } else {
2354                         spin_lock(&send_cq->lock);
2355                         __acquire(&recv_cq->lock);
2356                 }
2357         } else if (recv_cq) {
2358                 spin_lock(&recv_cq->lock);
2359                 __acquire(&send_cq->lock);
2360         } else {
2361                 __acquire(&send_cq->lock);
2362                 __acquire(&recv_cq->lock);
2363         }
2364 }
2365
2366 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2367         __releases(&send_cq->lock) __releases(&recv_cq->lock)
2368 {
2369         if (send_cq) {
2370                 if (recv_cq) {
2371                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
2372                                 spin_unlock(&recv_cq->lock);
2373                                 spin_unlock(&send_cq->lock);
2374                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2375                                 __release(&recv_cq->lock);
2376                                 spin_unlock(&send_cq->lock);
2377                         } else {
2378                                 spin_unlock(&send_cq->lock);
2379                                 spin_unlock(&recv_cq->lock);
2380                         }
2381                 } else {
2382                         __release(&recv_cq->lock);
2383                         spin_unlock(&send_cq->lock);
2384                 }
2385         } else if (recv_cq) {
2386                 __release(&send_cq->lock);
2387                 spin_unlock(&recv_cq->lock);
2388         } else {
2389                 __release(&recv_cq->lock);
2390                 __release(&send_cq->lock);
2391         }
2392 }
2393
2394 static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
2395 {
2396         return to_mpd(qp->ibqp.pd);
2397 }
2398
2399 static void get_cqs(enum ib_qp_type qp_type,
2400                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
2401                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
2402 {
2403         switch (qp_type) {
2404         case IB_QPT_XRC_TGT:
2405                 *send_cq = NULL;
2406                 *recv_cq = NULL;
2407                 break;
2408         case MLX5_IB_QPT_REG_UMR:
2409         case IB_QPT_XRC_INI:
2410                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2411                 *recv_cq = NULL;
2412                 break;
2413
2414         case IB_QPT_SMI:
2415         case MLX5_IB_QPT_HW_GSI:
2416         case IB_QPT_RC:
2417         case IB_QPT_UC:
2418         case IB_QPT_UD:
2419         case IB_QPT_RAW_IPV6:
2420         case IB_QPT_RAW_ETHERTYPE:
2421         case IB_QPT_RAW_PACKET:
2422                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2423                 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
2424                 break;
2425
2426         case IB_QPT_MAX:
2427         default:
2428                 *send_cq = NULL;
2429                 *recv_cq = NULL;
2430                 break;
2431         }
2432 }
2433
2434 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2435                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2436                                 u8 lag_tx_affinity);
2437
2438 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2439                               struct ib_udata *udata)
2440 {
2441         struct mlx5_ib_cq *send_cq, *recv_cq;
2442         struct mlx5_ib_qp_base *base;
2443         unsigned long flags;
2444         int err;
2445
2446         if (qp->ibqp.rwq_ind_tbl) {
2447                 destroy_rss_raw_qp_tir(dev, qp);
2448                 return;
2449         }
2450
2451         base = (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
2452                 qp->flags & MLX5_IB_QP_UNDERLAY) ?
2453                &qp->raw_packet_qp.rq.base :
2454                &qp->trans_qp.base;
2455
2456         if (qp->state != IB_QPS_RESET) {
2457                 if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET &&
2458                     !(qp->flags & MLX5_IB_QP_UNDERLAY)) {
2459                         err = mlx5_core_qp_modify(dev->mdev,
2460                                                   MLX5_CMD_OP_2RST_QP, 0,
2461                                                   NULL, &base->mqp);
2462                 } else {
2463                         struct mlx5_modify_raw_qp_param raw_qp_param = {
2464                                 .operation = MLX5_CMD_OP_2RST_QP
2465                         };
2466
2467                         err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
2468                 }
2469                 if (err)
2470                         mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
2471                                      base->mqp.qpn);
2472         }
2473
2474         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
2475                 &send_cq, &recv_cq);
2476
2477         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2478         mlx5_ib_lock_cqs(send_cq, recv_cq);
2479         /* del from lists under both locks above to protect reset flow paths */
2480         list_del(&qp->qps_list);
2481         if (send_cq)
2482                 list_del(&qp->cq_send_list);
2483
2484         if (recv_cq)
2485                 list_del(&qp->cq_recv_list);
2486
2487         if (qp->create_type == MLX5_QP_KERNEL) {
2488                 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2489                                    qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
2490                 if (send_cq != recv_cq)
2491                         __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
2492                                            NULL);
2493         }
2494         mlx5_ib_unlock_cqs(send_cq, recv_cq);
2495         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2496
2497         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
2498             qp->flags & MLX5_IB_QP_UNDERLAY) {
2499                 destroy_raw_packet_qp(dev, qp);
2500         } else {
2501                 err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
2502                 if (err)
2503                         mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
2504                                      base->mqp.qpn);
2505         }
2506
2507         if (qp->create_type == MLX5_QP_KERNEL)
2508                 destroy_qp_kernel(dev, qp);
2509         else if (qp->create_type == MLX5_QP_USER)
2510                 destroy_qp_user(dev, &get_pd(qp)->ibpd, qp, base, udata);
2511 }
2512
2513 static const char *ib_qp_type_str(enum ib_qp_type type)
2514 {
2515         switch (type) {
2516         case IB_QPT_SMI:
2517                 return "IB_QPT_SMI";
2518         case IB_QPT_GSI:
2519                 return "IB_QPT_GSI";
2520         case IB_QPT_RC:
2521                 return "IB_QPT_RC";
2522         case IB_QPT_UC:
2523                 return "IB_QPT_UC";
2524         case IB_QPT_UD:
2525                 return "IB_QPT_UD";
2526         case IB_QPT_RAW_IPV6:
2527                 return "IB_QPT_RAW_IPV6";
2528         case IB_QPT_RAW_ETHERTYPE:
2529                 return "IB_QPT_RAW_ETHERTYPE";
2530         case IB_QPT_XRC_INI:
2531                 return "IB_QPT_XRC_INI";
2532         case IB_QPT_XRC_TGT:
2533                 return "IB_QPT_XRC_TGT";
2534         case IB_QPT_RAW_PACKET:
2535                 return "IB_QPT_RAW_PACKET";
2536         case MLX5_IB_QPT_REG_UMR:
2537                 return "MLX5_IB_QPT_REG_UMR";
2538         case IB_QPT_DRIVER:
2539                 return "IB_QPT_DRIVER";
2540         case IB_QPT_MAX:
2541         default:
2542                 return "Invalid QP type";
2543         }
2544 }
2545
2546 static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd,
2547                                         struct ib_qp_init_attr *attr,
2548                                         struct mlx5_ib_create_qp *ucmd,
2549                                         struct ib_udata *udata)
2550 {
2551         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2552                 udata, struct mlx5_ib_ucontext, ibucontext);
2553         struct mlx5_ib_qp *qp;
2554         int err = 0;
2555         u32 uidx = MLX5_IB_DEFAULT_UIDX;
2556         void *dctc;
2557
2558         if (!attr->srq || !attr->recv_cq)
2559                 return ERR_PTR(-EINVAL);
2560
2561         err = get_qp_user_index(ucontext, ucmd, sizeof(*ucmd), &uidx);
2562         if (err)
2563                 return ERR_PTR(err);
2564
2565         qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2566         if (!qp)
2567                 return ERR_PTR(-ENOMEM);
2568
2569         qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
2570         if (!qp->dct.in) {
2571                 err = -ENOMEM;
2572                 goto err_free;
2573         }
2574
2575         MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid);
2576         dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
2577         qp->qp_sub_type = MLX5_IB_QPT_DCT;
2578         MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn);
2579         MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn);
2580         MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn);
2581         MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key);
2582         MLX5_SET(dctc, dctc, user_index, uidx);
2583
2584         if (ucmd->flags & MLX5_QP_FLAG_SCATTER_CQE)
2585                 configure_responder_scat_cqe(attr, dctc);
2586
2587         qp->state = IB_QPS_RESET;
2588
2589         return &qp->ibqp;
2590 err_free:
2591         kfree(qp);
2592         return ERR_PTR(err);
2593 }
2594
2595 static int set_mlx_qp_type(struct mlx5_ib_dev *dev,
2596                            struct ib_qp_init_attr *init_attr,
2597                            struct mlx5_ib_create_qp *ucmd,
2598                            struct ib_udata *udata)
2599 {
2600         enum { MLX_QP_FLAGS = MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI };
2601         int err;
2602
2603         if (!udata)
2604                 return -EINVAL;
2605
2606         if (udata->inlen < sizeof(*ucmd)) {
2607                 mlx5_ib_dbg(dev, "create_qp user command is smaller than expected\n");
2608                 return -EINVAL;
2609         }
2610         err = ib_copy_from_udata(ucmd, udata, sizeof(*ucmd));
2611         if (err)
2612                 return err;
2613
2614         if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCI) {
2615                 init_attr->qp_type = MLX5_IB_QPT_DCI;
2616         } else {
2617                 if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCT) {
2618                         init_attr->qp_type = MLX5_IB_QPT_DCT;
2619                 } else {
2620                         mlx5_ib_dbg(dev, "Invalid QP flags\n");
2621                         return -EINVAL;
2622                 }
2623         }
2624
2625         if (!MLX5_CAP_GEN(dev->mdev, dct)) {
2626                 mlx5_ib_dbg(dev, "DC transport is not supported\n");
2627                 return -EOPNOTSUPP;
2628         }
2629
2630         return 0;
2631 }
2632
2633 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
2634                                 struct ib_qp_init_attr *verbs_init_attr,
2635                                 struct ib_udata *udata)
2636 {
2637         struct mlx5_ib_dev *dev;
2638         struct mlx5_ib_qp *qp;
2639         u16 xrcdn = 0;
2640         int err;
2641         struct ib_qp_init_attr mlx_init_attr;
2642         struct ib_qp_init_attr *init_attr = verbs_init_attr;
2643         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2644                 udata, struct mlx5_ib_ucontext, ibucontext);
2645
2646         if (pd) {
2647                 dev = to_mdev(pd->device);
2648
2649                 if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
2650                         if (!ucontext) {
2651                                 mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
2652                                 return ERR_PTR(-EINVAL);
2653                         } else if (!ucontext->cqe_version) {
2654                                 mlx5_ib_dbg(dev, "Raw Packet QP is only supported for CQE version > 0\n");
2655                                 return ERR_PTR(-EINVAL);
2656                         }
2657                 }
2658         } else {
2659                 /* being cautious here */
2660                 if (init_attr->qp_type != IB_QPT_XRC_TGT &&
2661                     init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
2662                         pr_warn("%s: no PD for transport %s\n", __func__,
2663                                 ib_qp_type_str(init_attr->qp_type));
2664                         return ERR_PTR(-EINVAL);
2665                 }
2666                 dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
2667         }
2668
2669         if (init_attr->qp_type == IB_QPT_DRIVER) {
2670                 struct mlx5_ib_create_qp ucmd;
2671
2672                 init_attr = &mlx_init_attr;
2673                 memcpy(init_attr, verbs_init_attr, sizeof(*verbs_init_attr));
2674                 err = set_mlx_qp_type(dev, init_attr, &ucmd, udata);
2675                 if (err)
2676                         return ERR_PTR(err);
2677
2678                 if (init_attr->qp_type == MLX5_IB_QPT_DCI) {
2679                         if (init_attr->cap.max_recv_wr ||
2680                             init_attr->cap.max_recv_sge) {
2681                                 mlx5_ib_dbg(dev, "DCI QP requires zero size receive queue\n");
2682                                 return ERR_PTR(-EINVAL);
2683                         }
2684                 } else {
2685                         return mlx5_ib_create_dct(pd, init_attr, &ucmd, udata);
2686                 }
2687         }
2688
2689         switch (init_attr->qp_type) {
2690         case IB_QPT_XRC_TGT:
2691         case IB_QPT_XRC_INI:
2692                 if (!MLX5_CAP_GEN(dev->mdev, xrc)) {
2693                         mlx5_ib_dbg(dev, "XRC not supported\n");
2694                         return ERR_PTR(-ENOSYS);
2695                 }
2696                 init_attr->recv_cq = NULL;
2697                 if (init_attr->qp_type == IB_QPT_XRC_TGT) {
2698                         xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
2699                         init_attr->send_cq = NULL;
2700                 }
2701
2702                 /* fall through */
2703         case IB_QPT_RAW_PACKET:
2704         case IB_QPT_RC:
2705         case IB_QPT_UC:
2706         case IB_QPT_UD:
2707         case IB_QPT_SMI:
2708         case MLX5_IB_QPT_HW_GSI:
2709         case MLX5_IB_QPT_REG_UMR:
2710         case MLX5_IB_QPT_DCI:
2711                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2712                 if (!qp)
2713                         return ERR_PTR(-ENOMEM);
2714
2715                 err = create_qp_common(dev, pd, init_attr, udata, qp);
2716                 if (err) {
2717                         mlx5_ib_dbg(dev, "create_qp_common failed\n");
2718                         kfree(qp);
2719                         return ERR_PTR(err);
2720                 }
2721
2722                 if (is_qp0(init_attr->qp_type))
2723                         qp->ibqp.qp_num = 0;
2724                 else if (is_qp1(init_attr->qp_type))
2725                         qp->ibqp.qp_num = 1;
2726                 else
2727                         qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2728
2729                 mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
2730                             qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2731                             init_attr->recv_cq ? to_mcq(init_attr->recv_cq)->mcq.cqn : -1,
2732                             init_attr->send_cq ? to_mcq(init_attr->send_cq)->mcq.cqn : -1);
2733
2734                 qp->trans_qp.xrcdn = xrcdn;
2735
2736                 break;
2737
2738         case IB_QPT_GSI:
2739                 return mlx5_ib_gsi_create_qp(pd, init_attr);
2740
2741         case IB_QPT_RAW_IPV6:
2742         case IB_QPT_RAW_ETHERTYPE:
2743         case IB_QPT_MAX:
2744         default:
2745                 mlx5_ib_dbg(dev, "unsupported qp type %d\n",
2746                             init_attr->qp_type);
2747                 /* Don't support raw QPs */
2748                 return ERR_PTR(-EINVAL);
2749         }
2750
2751         if (verbs_init_attr->qp_type == IB_QPT_DRIVER)
2752                 qp->qp_sub_type = init_attr->qp_type;
2753
2754         return &qp->ibqp;
2755 }
2756
2757 static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)
2758 {
2759         struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device);
2760
2761         if (mqp->state == IB_QPS_RTR) {
2762                 int err;
2763
2764                 err = mlx5_core_destroy_dct(dev->mdev, &mqp->dct.mdct);
2765                 if (err) {
2766                         mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err);
2767                         return err;
2768                 }
2769         }
2770
2771         kfree(mqp->dct.in);
2772         kfree(mqp);
2773         return 0;
2774 }
2775
2776 int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
2777 {
2778         struct mlx5_ib_dev *dev = to_mdev(qp->device);
2779         struct mlx5_ib_qp *mqp = to_mqp(qp);
2780
2781         if (unlikely(qp->qp_type == IB_QPT_GSI))
2782                 return mlx5_ib_gsi_destroy_qp(qp);
2783
2784         if (mqp->qp_sub_type == MLX5_IB_QPT_DCT)
2785                 return mlx5_ib_destroy_dct(mqp);
2786
2787         destroy_qp_common(dev, mqp, udata);
2788
2789         kfree(mqp);
2790
2791         return 0;
2792 }
2793
2794 static int to_mlx5_access_flags(struct mlx5_ib_qp *qp,
2795                                 const struct ib_qp_attr *attr,
2796                                 int attr_mask, __be32 *hw_access_flags_be)
2797 {
2798         u8 dest_rd_atomic;
2799         u32 access_flags, hw_access_flags = 0;
2800
2801         struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
2802
2803         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2804                 dest_rd_atomic = attr->max_dest_rd_atomic;
2805         else
2806                 dest_rd_atomic = qp->trans_qp.resp_depth;
2807
2808         if (attr_mask & IB_QP_ACCESS_FLAGS)
2809                 access_flags = attr->qp_access_flags;
2810         else
2811                 access_flags = qp->trans_qp.atomic_rd_en;
2812
2813         if (!dest_rd_atomic)
2814                 access_flags &= IB_ACCESS_REMOTE_WRITE;
2815
2816         if (access_flags & IB_ACCESS_REMOTE_READ)
2817                 hw_access_flags |= MLX5_QP_BIT_RRE;
2818         if (access_flags & IB_ACCESS_REMOTE_ATOMIC) {
2819                 int atomic_mode;
2820
2821                 atomic_mode = get_atomic_mode(dev, qp->ibqp.qp_type);
2822                 if (atomic_mode < 0)
2823                         return -EOPNOTSUPP;
2824
2825                 hw_access_flags |= MLX5_QP_BIT_RAE;
2826                 hw_access_flags |= atomic_mode << MLX5_ATOMIC_MODE_OFFSET;
2827         }
2828
2829         if (access_flags & IB_ACCESS_REMOTE_WRITE)
2830                 hw_access_flags |= MLX5_QP_BIT_RWE;
2831
2832         *hw_access_flags_be = cpu_to_be32(hw_access_flags);
2833
2834         return 0;
2835 }
2836
2837 enum {
2838         MLX5_PATH_FLAG_FL       = 1 << 0,
2839         MLX5_PATH_FLAG_FREE_AR  = 1 << 1,
2840         MLX5_PATH_FLAG_COUNTER  = 1 << 2,
2841 };
2842
2843 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
2844 {
2845         if (rate == IB_RATE_PORT_CURRENT)
2846                 return 0;
2847
2848         if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS)
2849                 return -EINVAL;
2850
2851         while (rate != IB_RATE_PORT_CURRENT &&
2852                !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
2853                  MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
2854                 --rate;
2855
2856         return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;
2857 }
2858
2859 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
2860                                       struct mlx5_ib_sq *sq, u8 sl,
2861                                       struct ib_pd *pd)
2862 {
2863         void *in;
2864         void *tisc;
2865         int inlen;
2866         int err;
2867
2868         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2869         in = kvzalloc(inlen, GFP_KERNEL);
2870         if (!in)
2871                 return -ENOMEM;
2872
2873         MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
2874         MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
2875
2876         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2877         MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
2878
2879         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2880
2881         kvfree(in);
2882
2883         return err;
2884 }
2885
2886 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
2887                                          struct mlx5_ib_sq *sq, u8 tx_affinity,
2888                                          struct ib_pd *pd)
2889 {
2890         void *in;
2891         void *tisc;
2892         int inlen;
2893         int err;
2894
2895         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2896         in = kvzalloc(inlen, GFP_KERNEL);
2897         if (!in)
2898                 return -ENOMEM;
2899
2900         MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
2901         MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
2902
2903         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2904         MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
2905
2906         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2907
2908         kvfree(in);
2909
2910         return err;
2911 }
2912
2913 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2914                          const struct rdma_ah_attr *ah,
2915                          struct mlx5_qp_path *path, u8 port, int attr_mask,
2916                          u32 path_flags, const struct ib_qp_attr *attr,
2917                          bool alt)
2918 {
2919         const struct ib_global_route *grh = rdma_ah_read_grh(ah);
2920         int err;
2921         enum ib_gid_type gid_type;
2922         u8 ah_flags = rdma_ah_get_ah_flags(ah);
2923         u8 sl = rdma_ah_get_sl(ah);
2924
2925         if (attr_mask & IB_QP_PKEY_INDEX)
2926                 path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
2927                                                      attr->pkey_index);
2928
2929         if (ah_flags & IB_AH_GRH) {
2930                 if (grh->sgid_index >=
2931                     dev->mdev->port_caps[port - 1].gid_table_len) {
2932                         pr_err("sgid_index (%u) too large. max is %d\n",
2933                                grh->sgid_index,
2934                                dev->mdev->port_caps[port - 1].gid_table_len);
2935                         return -EINVAL;
2936                 }
2937         }
2938
2939         if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
2940                 if (!(ah_flags & IB_AH_GRH))
2941                         return -EINVAL;
2942
2943                 memcpy(path->rmac, ah->roce.dmac, sizeof(ah->roce.dmac));
2944                 if (qp->ibqp.qp_type == IB_QPT_RC ||
2945                     qp->ibqp.qp_type == IB_QPT_UC ||
2946                     qp->ibqp.qp_type == IB_QPT_XRC_INI ||
2947                     qp->ibqp.qp_type == IB_QPT_XRC_TGT)
2948                         path->udp_sport =
2949                                 mlx5_get_roce_udp_sport(dev, ah->grh.sgid_attr);
2950                 path->dci_cfi_prio_sl = (sl & 0x7) << 4;
2951                 gid_type = ah->grh.sgid_attr->gid_type;
2952                 if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
2953                         path->ecn_dscp = (grh->traffic_class >> 2) & 0x3f;
2954         } else {
2955                 path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
2956                 path->fl_free_ar |=
2957                         (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x40 : 0;
2958                 path->rlid = cpu_to_be16(rdma_ah_get_dlid(ah));
2959                 path->grh_mlid = rdma_ah_get_path_bits(ah) & 0x7f;
2960                 if (ah_flags & IB_AH_GRH)
2961                         path->grh_mlid  |= 1 << 7;
2962                 path->dci_cfi_prio_sl = sl & 0xf;
2963         }
2964
2965         if (ah_flags & IB_AH_GRH) {
2966                 path->mgid_index = grh->sgid_index;
2967                 path->hop_limit  = grh->hop_limit;
2968                 path->tclass_flowlabel =
2969                         cpu_to_be32((grh->traffic_class << 20) |
2970                                     (grh->flow_label));
2971                 memcpy(path->rgid, grh->dgid.raw, 16);
2972         }
2973
2974         err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah));
2975         if (err < 0)
2976                 return err;
2977         path->static_rate = err;
2978         path->port = port;
2979
2980         if (attr_mask & IB_QP_TIMEOUT)
2981                 path->ackto_lt = (alt ? attr->alt_timeout : attr->timeout) << 3;
2982
2983         if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
2984                 return modify_raw_packet_eth_prio(dev->mdev,
2985                                                   &qp->raw_packet_qp.sq,
2986                                                   sl & 0xf, qp->ibqp.pd);
2987
2988         return 0;
2989 }
2990
2991 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
2992         [MLX5_QP_STATE_INIT] = {
2993                 [MLX5_QP_STATE_INIT] = {
2994                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2995                                           MLX5_QP_OPTPAR_RAE            |
2996                                           MLX5_QP_OPTPAR_RWE            |
2997                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2998                                           MLX5_QP_OPTPAR_PRI_PORT,
2999                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
3000                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
3001                                           MLX5_QP_OPTPAR_PRI_PORT,
3002                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
3003                                           MLX5_QP_OPTPAR_Q_KEY          |
3004                                           MLX5_QP_OPTPAR_PRI_PORT,
3005                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE           |
3006                                           MLX5_QP_OPTPAR_RAE            |
3007                                           MLX5_QP_OPTPAR_RWE            |
3008                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
3009                                           MLX5_QP_OPTPAR_PRI_PORT,
3010                 },
3011                 [MLX5_QP_STATE_RTR] = {
3012                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3013                                           MLX5_QP_OPTPAR_RRE            |
3014                                           MLX5_QP_OPTPAR_RAE            |
3015                                           MLX5_QP_OPTPAR_RWE            |
3016                                           MLX5_QP_OPTPAR_PKEY_INDEX,
3017                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3018                                           MLX5_QP_OPTPAR_RWE            |
3019                                           MLX5_QP_OPTPAR_PKEY_INDEX,
3020                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
3021                                           MLX5_QP_OPTPAR_Q_KEY,
3022                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX    |
3023                                            MLX5_QP_OPTPAR_Q_KEY,
3024                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3025                                           MLX5_QP_OPTPAR_RRE            |
3026                                           MLX5_QP_OPTPAR_RAE            |
3027                                           MLX5_QP_OPTPAR_RWE            |
3028                                           MLX5_QP_OPTPAR_PKEY_INDEX,
3029                 },
3030         },
3031         [MLX5_QP_STATE_RTR] = {
3032                 [MLX5_QP_STATE_RTS] = {
3033                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3034                                           MLX5_QP_OPTPAR_RRE            |
3035                                           MLX5_QP_OPTPAR_RAE            |
3036                                           MLX5_QP_OPTPAR_RWE            |
3037                                           MLX5_QP_OPTPAR_PM_STATE       |
3038                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
3039                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3040                                           MLX5_QP_OPTPAR_RWE            |
3041                                           MLX5_QP_OPTPAR_PM_STATE,
3042                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
3043                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3044                                           MLX5_QP_OPTPAR_RRE            |
3045                                           MLX5_QP_OPTPAR_RAE            |
3046                                           MLX5_QP_OPTPAR_RWE            |
3047                                           MLX5_QP_OPTPAR_PM_STATE       |
3048                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
3049                 },
3050         },
3051         [MLX5_QP_STATE_RTS] = {
3052                 [MLX5_QP_STATE_RTS] = {
3053                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
3054                                           MLX5_QP_OPTPAR_RAE            |
3055                                           MLX5_QP_OPTPAR_RWE            |
3056                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
3057                                           MLX5_QP_OPTPAR_PM_STATE       |
3058                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3059                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
3060                                           MLX5_QP_OPTPAR_PM_STATE       |
3061                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3062                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY          |
3063                                           MLX5_QP_OPTPAR_SRQN           |
3064                                           MLX5_QP_OPTPAR_CQN_RCV,
3065                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE           |
3066                                           MLX5_QP_OPTPAR_RAE            |
3067                                           MLX5_QP_OPTPAR_RWE            |
3068                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
3069                                           MLX5_QP_OPTPAR_PM_STATE       |
3070                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3071                 },
3072         },
3073         [MLX5_QP_STATE_SQER] = {
3074                 [MLX5_QP_STATE_RTS] = {
3075                         [MLX5_QP_ST_UD]  = MLX5_QP_OPTPAR_Q_KEY,
3076                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
3077                         [MLX5_QP_ST_UC]  = MLX5_QP_OPTPAR_RWE,
3078                         [MLX5_QP_ST_RC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT   |
3079                                            MLX5_QP_OPTPAR_RWE           |
3080                                            MLX5_QP_OPTPAR_RAE           |
3081                                            MLX5_QP_OPTPAR_RRE,
3082                         [MLX5_QP_ST_XRC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT  |
3083                                            MLX5_QP_OPTPAR_RWE           |
3084                                            MLX5_QP_OPTPAR_RAE           |
3085                                            MLX5_QP_OPTPAR_RRE,
3086                 },
3087         },
3088 };
3089
3090 static int ib_nr_to_mlx5_nr(int ib_mask)
3091 {
3092         switch (ib_mask) {
3093         case IB_QP_STATE:
3094                 return 0;
3095         case IB_QP_CUR_STATE:
3096                 return 0;
3097         case IB_QP_EN_SQD_ASYNC_NOTIFY:
3098                 return 0;
3099         case IB_QP_ACCESS_FLAGS:
3100                 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
3101                         MLX5_QP_OPTPAR_RAE;
3102         case IB_QP_PKEY_INDEX:
3103                 return MLX5_QP_OPTPAR_PKEY_INDEX;
3104         case IB_QP_PORT:
3105                 return MLX5_QP_OPTPAR_PRI_PORT;
3106         case IB_QP_QKEY:
3107                 return MLX5_QP_OPTPAR_Q_KEY;
3108         case IB_QP_AV:
3109                 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
3110                         MLX5_QP_OPTPAR_PRI_PORT;
3111         case IB_QP_PATH_MTU:
3112                 return 0;
3113         case IB_QP_TIMEOUT:
3114                 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
3115         case IB_QP_RETRY_CNT:
3116                 return MLX5_QP_OPTPAR_RETRY_COUNT;
3117         case IB_QP_RNR_RETRY:
3118                 return MLX5_QP_OPTPAR_RNR_RETRY;
3119         case IB_QP_RQ_PSN:
3120                 return 0;
3121         case IB_QP_MAX_QP_RD_ATOMIC:
3122                 return MLX5_QP_OPTPAR_SRA_MAX;
3123         case IB_QP_ALT_PATH:
3124                 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
3125         case IB_QP_MIN_RNR_TIMER:
3126                 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
3127         case IB_QP_SQ_PSN:
3128                 return 0;
3129         case IB_QP_MAX_DEST_RD_ATOMIC:
3130                 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
3131                         MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
3132         case IB_QP_PATH_MIG_STATE:
3133                 return MLX5_QP_OPTPAR_PM_STATE;
3134         case IB_QP_CAP:
3135                 return 0;
3136         case IB_QP_DEST_QPN:
3137                 return 0;
3138         }
3139         return 0;
3140 }
3141
3142 static int ib_mask_to_mlx5_opt(int ib_mask)
3143 {
3144         int result = 0;
3145         int i;
3146
3147         for (i = 0; i < 8 * sizeof(int); i++) {
3148                 if ((1 << i) & ib_mask)
3149                         result |= ib_nr_to_mlx5_nr(1 << i);
3150         }
3151
3152         return result;
3153 }
3154
3155 static int modify_raw_packet_qp_rq(
3156         struct mlx5_ib_dev *dev, struct mlx5_ib_rq *rq, int new_state,
3157         const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3158 {
3159         void *in;
3160         void *rqc;
3161         int inlen;
3162         int err;
3163
3164         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
3165         in = kvzalloc(inlen, GFP_KERNEL);
3166         if (!in)
3167                 return -ENOMEM;
3168
3169         MLX5_SET(modify_rq_in, in, rq_state, rq->state);
3170         MLX5_SET(modify_rq_in, in, uid, to_mpd(pd)->uid);
3171
3172         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
3173         MLX5_SET(rqc, rqc, state, new_state);
3174
3175         if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
3176                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
3177                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
3178                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
3179                         MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
3180                 } else
3181                         dev_info_once(
3182                                 &dev->ib_dev.dev,
3183                                 "RAW PACKET QP counters are not supported on current FW\n");
3184         }
3185
3186         err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in, inlen);
3187         if (err)
3188                 goto out;
3189
3190         rq->state = new_state;
3191
3192 out:
3193         kvfree(in);
3194         return err;
3195 }
3196
3197 static int modify_raw_packet_qp_sq(
3198         struct mlx5_core_dev *dev, struct mlx5_ib_sq *sq, int new_state,
3199         const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3200 {
3201         struct mlx5_ib_qp *ibqp = sq->base.container_mibqp;
3202         struct mlx5_rate_limit old_rl = ibqp->rl;
3203         struct mlx5_rate_limit new_rl = old_rl;
3204         bool new_rate_added = false;
3205         u16 rl_index = 0;
3206         void *in;
3207         void *sqc;
3208         int inlen;
3209         int err;
3210
3211         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
3212         in = kvzalloc(inlen, GFP_KERNEL);
3213         if (!in)
3214                 return -ENOMEM;
3215
3216         MLX5_SET(modify_sq_in, in, uid, to_mpd(pd)->uid);
3217         MLX5_SET(modify_sq_in, in, sq_state, sq->state);
3218
3219         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
3220         MLX5_SET(sqc, sqc, state, new_state);
3221
3222         if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) {
3223                 if (new_state != MLX5_SQC_STATE_RDY)
3224                         pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n",
3225                                 __func__);
3226                 else
3227                         new_rl = raw_qp_param->rl;
3228         }
3229
3230         if (!mlx5_rl_are_equal(&old_rl, &new_rl)) {
3231                 if (new_rl.rate) {
3232                         err = mlx5_rl_add_rate(dev, &rl_index, &new_rl);
3233                         if (err) {
3234                                 pr_err("Failed configuring rate limit(err %d): \
3235                                        rate %u, max_burst_sz %u, typical_pkt_sz %u\n",
3236                                        err, new_rl.rate, new_rl.max_burst_sz,
3237                                        new_rl.typical_pkt_sz);
3238
3239                                 goto out;
3240                         }
3241                         new_rate_added = true;
3242                 }
3243
3244                 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
3245                 /* index 0 means no limit */
3246                 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index);
3247         }
3248
3249         err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
3250         if (err) {
3251                 /* Remove new rate from table if failed */
3252                 if (new_rate_added)
3253                         mlx5_rl_remove_rate(dev, &new_rl);
3254                 goto out;
3255         }
3256
3257         /* Only remove the old rate after new rate was set */
3258         if ((old_rl.rate &&
3259              !mlx5_rl_are_equal(&old_rl, &new_rl)) ||
3260             (new_state != MLX5_SQC_STATE_RDY))
3261                 mlx5_rl_remove_rate(dev, &old_rl);
3262
3263         ibqp->rl = new_rl;
3264         sq->state = new_state;
3265
3266 out:
3267         kvfree(in);
3268         return err;
3269 }
3270
3271 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
3272                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
3273                                 u8 tx_affinity)
3274 {
3275         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
3276         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
3277         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
3278         int modify_rq = !!qp->rq.wqe_cnt;
3279         int modify_sq = !!qp->sq.wqe_cnt;
3280         int rq_state;
3281         int sq_state;
3282         int err;
3283
3284         switch (raw_qp_param->operation) {
3285         case MLX5_CMD_OP_RST2INIT_QP:
3286                 rq_state = MLX5_RQC_STATE_RDY;
3287                 sq_state = MLX5_SQC_STATE_RDY;
3288                 break;
3289         case MLX5_CMD_OP_2ERR_QP:
3290                 rq_state = MLX5_RQC_STATE_ERR;
3291                 sq_state = MLX5_SQC_STATE_ERR;
3292                 break;
3293         case MLX5_CMD_OP_2RST_QP:
3294                 rq_state = MLX5_RQC_STATE_RST;
3295                 sq_state = MLX5_SQC_STATE_RST;
3296                 break;
3297         case MLX5_CMD_OP_RTR2RTS_QP:
3298         case MLX5_CMD_OP_RTS2RTS_QP:
3299                 if (raw_qp_param->set_mask ==
3300                     MLX5_RAW_QP_RATE_LIMIT) {
3301                         modify_rq = 0;
3302                         sq_state = sq->state;
3303                 } else {
3304                         return raw_qp_param->set_mask ? -EINVAL : 0;
3305                 }
3306                 break;
3307         case MLX5_CMD_OP_INIT2INIT_QP:
3308         case MLX5_CMD_OP_INIT2RTR_QP:
3309                 if (raw_qp_param->set_mask)
3310                         return -EINVAL;
3311                 else
3312                         return 0;
3313         default:
3314                 WARN_ON(1);
3315                 return -EINVAL;
3316         }
3317
3318         if (modify_rq) {
3319                 err =  modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param,
3320                                                qp->ibqp.pd);
3321                 if (err)
3322                         return err;
3323         }
3324
3325         if (modify_sq) {
3326                 struct mlx5_flow_handle *flow_rule;
3327
3328                 if (tx_affinity) {
3329                         err = modify_raw_packet_tx_affinity(dev->mdev, sq,
3330                                                             tx_affinity,
3331                                                             qp->ibqp.pd);
3332                         if (err)
3333                                 return err;
3334                 }
3335
3336                 flow_rule = create_flow_rule_vport_sq(dev, sq,
3337                                                       raw_qp_param->port);
3338                 if (IS_ERR(flow_rule))
3339                         return PTR_ERR(flow_rule);
3340
3341                 err = modify_raw_packet_qp_sq(dev->mdev, sq, sq_state,
3342                                               raw_qp_param, qp->ibqp.pd);
3343                 if (err) {
3344                         if (flow_rule)
3345                                 mlx5_del_flow_rules(flow_rule);
3346                         return err;
3347                 }
3348
3349                 if (flow_rule) {
3350                         destroy_flow_rule_vport_sq(sq);
3351                         sq->flow_rule = flow_rule;
3352                 }
3353
3354                 return err;
3355         }
3356
3357         return 0;
3358 }
3359
3360 static unsigned int get_tx_affinity(struct mlx5_ib_dev *dev,
3361                                     struct mlx5_ib_pd *pd,
3362                                     struct mlx5_ib_qp_base *qp_base,
3363                                     u8 port_num, struct ib_udata *udata)
3364 {
3365         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
3366                 udata, struct mlx5_ib_ucontext, ibucontext);
3367         unsigned int tx_port_affinity;
3368
3369         if (ucontext) {
3370                 tx_port_affinity = (unsigned int)atomic_add_return(
3371                                            1, &ucontext->tx_port_affinity) %
3372                                            MLX5_MAX_PORTS +
3373                                    1;
3374                 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x ucontext %p\n",
3375                                 tx_port_affinity, qp_base->mqp.qpn, ucontext);
3376         } else {
3377                 tx_port_affinity =
3378                         (unsigned int)atomic_add_return(
3379                                 1, &dev->port[port_num].roce.tx_port_affinity) %
3380                                 MLX5_MAX_PORTS +
3381                         1;
3382                 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x\n",
3383                                 tx_port_affinity, qp_base->mqp.qpn);
3384         }
3385
3386         return tx_port_affinity;
3387 }
3388
3389 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
3390                                const struct ib_qp_attr *attr, int attr_mask,
3391                                enum ib_qp_state cur_state,
3392                                enum ib_qp_state new_state,
3393                                const struct mlx5_ib_modify_qp *ucmd,
3394                                struct ib_udata *udata)
3395 {
3396         static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
3397                 [MLX5_QP_STATE_RST] = {
3398                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3399                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3400                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_RST2INIT_QP,
3401                 },
3402                 [MLX5_QP_STATE_INIT]  = {
3403                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3404                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3405                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_INIT2INIT_QP,
3406                         [MLX5_QP_STATE_RTR]     = MLX5_CMD_OP_INIT2RTR_QP,
3407                 },
3408                 [MLX5_QP_STATE_RTR]   = {
3409                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3410                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3411                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTR2RTS_QP,
3412                 },
3413                 [MLX5_QP_STATE_RTS]   = {
3414                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3415                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3416                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTS2RTS_QP,
3417                 },
3418                 [MLX5_QP_STATE_SQD] = {
3419                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3420                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3421                 },
3422                 [MLX5_QP_STATE_SQER] = {
3423                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3424                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3425                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_SQERR2RTS_QP,
3426                 },
3427                 [MLX5_QP_STATE_ERR] = {
3428                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3429                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3430                 }
3431         };
3432
3433         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3434         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3435         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
3436         struct mlx5_ib_cq *send_cq, *recv_cq;
3437         struct mlx5_qp_context *context;
3438         struct mlx5_ib_pd *pd;
3439         struct mlx5_ib_port *mibport = NULL;
3440         enum mlx5_qp_state mlx5_cur, mlx5_new;
3441         enum mlx5_qp_optpar optpar;
3442         int mlx5_st;
3443         int err;
3444         u16 op;
3445         u8 tx_affinity = 0;
3446
3447         mlx5_st = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
3448                              qp->qp_sub_type : ibqp->qp_type);
3449         if (mlx5_st < 0)
3450                 return -EINVAL;
3451
3452         context = kzalloc(sizeof(*context), GFP_KERNEL);
3453         if (!context)
3454                 return -ENOMEM;
3455
3456         pd = get_pd(qp);
3457         context->flags = cpu_to_be32(mlx5_st << 16);
3458
3459         if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
3460                 context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
3461         } else {
3462                 switch (attr->path_mig_state) {
3463                 case IB_MIG_MIGRATED:
3464                         context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
3465                         break;
3466                 case IB_MIG_REARM:
3467                         context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
3468                         break;
3469                 case IB_MIG_ARMED:
3470                         context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
3471                         break;
3472                 }
3473         }
3474
3475         if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) {
3476                 if ((ibqp->qp_type == IB_QPT_RC) ||
3477                     (ibqp->qp_type == IB_QPT_UD &&
3478                      !(qp->flags & MLX5_IB_QP_SQPN_QP1)) ||
3479                     (ibqp->qp_type == IB_QPT_UC) ||
3480                     (ibqp->qp_type == IB_QPT_RAW_PACKET) ||
3481                     (ibqp->qp_type == IB_QPT_XRC_INI) ||
3482                     (ibqp->qp_type == IB_QPT_XRC_TGT)) {
3483                         if (dev->lag_active) {
3484                                 u8 p = mlx5_core_native_port_num(dev->mdev) - 1;
3485                                 tx_affinity = get_tx_affinity(dev, pd, base, p,
3486                                                               udata);
3487                                 context->flags |= cpu_to_be32(tx_affinity << 24);
3488                         }
3489                 }
3490         }
3491
3492         if (is_sqp(ibqp->qp_type)) {
3493                 context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
3494         } else if ((ibqp->qp_type == IB_QPT_UD &&
3495                     !(qp->flags & MLX5_IB_QP_UNDERLAY)) ||
3496                    ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
3497                 context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
3498         } else if (attr_mask & IB_QP_PATH_MTU) {
3499                 if (attr->path_mtu < IB_MTU_256 ||
3500                     attr->path_mtu > IB_MTU_4096) {
3501                         mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
3502                         err = -EINVAL;
3503                         goto out;
3504                 }
3505                 context->mtu_msgmax = (attr->path_mtu << 5) |
3506                                       (u8)MLX5_CAP_GEN(dev->mdev, log_max_msg);
3507         }
3508
3509         if (attr_mask & IB_QP_DEST_QPN)
3510                 context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
3511
3512         if (attr_mask & IB_QP_PKEY_INDEX)
3513                 context->pri_path.pkey_index = cpu_to_be16(attr->pkey_index);
3514
3515         /* todo implement counter_index functionality */
3516
3517         if (is_sqp(ibqp->qp_type))
3518                 context->pri_path.port = qp->port;
3519
3520         if (attr_mask & IB_QP_PORT)
3521                 context->pri_path.port = attr->port_num;
3522
3523         if (attr_mask & IB_QP_AV) {
3524                 err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
3525                                     attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
3526                                     attr_mask, 0, attr, false);
3527                 if (err)
3528                         goto out;
3529         }
3530
3531         if (attr_mask & IB_QP_TIMEOUT)
3532                 context->pri_path.ackto_lt |= attr->timeout << 3;
3533
3534         if (attr_mask & IB_QP_ALT_PATH) {
3535                 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
3536                                     &context->alt_path,
3537                                     attr->alt_port_num,
3538                                     attr_mask | IB_QP_PKEY_INDEX | IB_QP_TIMEOUT,
3539                                     0, attr, true);
3540                 if (err)
3541                         goto out;
3542         }
3543
3544         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
3545                 &send_cq, &recv_cq);
3546
3547         context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
3548         context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
3549         context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
3550         context->params1  = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
3551
3552         if (attr_mask & IB_QP_RNR_RETRY)
3553                 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
3554
3555         if (attr_mask & IB_QP_RETRY_CNT)
3556                 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
3557
3558         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
3559                 if (attr->max_rd_atomic)
3560                         context->params1 |=
3561                                 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
3562         }
3563
3564         if (attr_mask & IB_QP_SQ_PSN)
3565                 context->next_send_psn = cpu_to_be32(attr->sq_psn);
3566
3567         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
3568                 if (attr->max_dest_rd_atomic)
3569                         context->params2 |=
3570                                 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
3571         }
3572
3573         if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
3574                 __be32 access_flags;
3575
3576                 err = to_mlx5_access_flags(qp, attr, attr_mask, &access_flags);
3577                 if (err)
3578                         goto out;
3579
3580                 context->params2 |= access_flags;
3581         }
3582
3583         if (attr_mask & IB_QP_MIN_RNR_TIMER)
3584                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
3585
3586         if (attr_mask & IB_QP_RQ_PSN)
3587                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
3588
3589         if (attr_mask & IB_QP_QKEY)
3590                 context->qkey = cpu_to_be32(attr->qkey);
3591
3592         if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3593                 context->db_rec_addr = cpu_to_be64(qp->db.dma);
3594
3595         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3596                 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
3597                                qp->port) - 1;
3598
3599                 /* Underlay port should be used - index 0 function per port */
3600                 if (qp->flags & MLX5_IB_QP_UNDERLAY)
3601                         port_num = 0;
3602
3603                 mibport = &dev->port[port_num];
3604                 context->qp_counter_set_usr_page |=
3605                         cpu_to_be32((u32)(mibport->cnts.set_id) << 24);
3606         }
3607
3608         if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3609                 context->sq_crq_size |= cpu_to_be16(1 << 4);
3610
3611         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
3612                 context->deth_sqpn = cpu_to_be32(1);
3613
3614         mlx5_cur = to_mlx5_state(cur_state);
3615         mlx5_new = to_mlx5_state(new_state);
3616
3617         if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
3618             !optab[mlx5_cur][mlx5_new]) {
3619                 err = -EINVAL;
3620                 goto out;
3621         }
3622
3623         op = optab[mlx5_cur][mlx5_new];
3624         optpar = ib_mask_to_mlx5_opt(attr_mask);
3625         optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
3626
3627         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
3628             qp->flags & MLX5_IB_QP_UNDERLAY) {
3629                 struct mlx5_modify_raw_qp_param raw_qp_param = {};
3630
3631                 raw_qp_param.operation = op;
3632                 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3633                         raw_qp_param.rq_q_ctr_id = mibport->cnts.set_id;
3634                         raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
3635                 }
3636
3637                 if (attr_mask & IB_QP_PORT)
3638                         raw_qp_param.port = attr->port_num;
3639
3640                 if (attr_mask & IB_QP_RATE_LIMIT) {
3641                         raw_qp_param.rl.rate = attr->rate_limit;
3642
3643                         if (ucmd->burst_info.max_burst_sz) {
3644                                 if (attr->rate_limit &&
3645                                     MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) {
3646                                         raw_qp_param.rl.max_burst_sz =
3647                                                 ucmd->burst_info.max_burst_sz;
3648                                 } else {
3649                                         err = -EINVAL;
3650                                         goto out;
3651                                 }
3652                         }
3653
3654                         if (ucmd->burst_info.typical_pkt_sz) {
3655                                 if (attr->rate_limit &&
3656                                     MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) {
3657                                         raw_qp_param.rl.typical_pkt_sz =
3658                                                 ucmd->burst_info.typical_pkt_sz;
3659                                 } else {
3660                                         err = -EINVAL;
3661                                         goto out;
3662                                 }
3663                         }
3664
3665                         raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT;
3666                 }
3667
3668                 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
3669         } else {
3670                 err = mlx5_core_qp_modify(dev->mdev, op, optpar, context,
3671                                           &base->mqp);
3672         }
3673
3674         if (err)
3675                 goto out;
3676
3677         qp->state = new_state;
3678
3679         if (attr_mask & IB_QP_ACCESS_FLAGS)
3680                 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
3681         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
3682                 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
3683         if (attr_mask & IB_QP_PORT)
3684                 qp->port = attr->port_num;
3685         if (attr_mask & IB_QP_ALT_PATH)
3686                 qp->trans_qp.alt_port = attr->alt_port_num;
3687
3688         /*
3689          * If we moved a kernel QP to RESET, clean up all old CQ
3690          * entries and reinitialize the QP.
3691          */
3692         if (new_state == IB_QPS_RESET &&
3693             !ibqp->uobject && ibqp->qp_type != IB_QPT_XRC_TGT) {
3694                 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
3695                                  ibqp->srq ? to_msrq(ibqp->srq) : NULL);
3696                 if (send_cq != recv_cq)
3697                         mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
3698
3699                 qp->rq.head = 0;
3700                 qp->rq.tail = 0;
3701                 qp->sq.head = 0;
3702                 qp->sq.tail = 0;
3703                 qp->sq.cur_post = 0;
3704                 if (qp->sq.wqe_cnt)
3705                         qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
3706                 qp->db.db[MLX5_RCV_DBR] = 0;
3707                 qp->db.db[MLX5_SND_DBR] = 0;
3708         }
3709
3710 out:
3711         kfree(context);
3712         return err;
3713 }
3714
3715 static inline bool is_valid_mask(int mask, int req, int opt)
3716 {
3717         if ((mask & req) != req)
3718                 return false;
3719
3720         if (mask & ~(req | opt))
3721                 return false;
3722
3723         return true;
3724 }
3725
3726 /* check valid transition for driver QP types
3727  * for now the only QP type that this function supports is DCI
3728  */
3729 static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state,
3730                                 enum ib_qp_attr_mask attr_mask)
3731 {
3732         int req = IB_QP_STATE;
3733         int opt = 0;
3734
3735         if (new_state == IB_QPS_RESET) {
3736                 return is_valid_mask(attr_mask, req, opt);
3737         } else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3738                 req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
3739                 return is_valid_mask(attr_mask, req, opt);
3740         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
3741                 opt = IB_QP_PKEY_INDEX | IB_QP_PORT;
3742                 return is_valid_mask(attr_mask, req, opt);
3743         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
3744                 req |= IB_QP_PATH_MTU;
3745                 opt = IB_QP_PKEY_INDEX | IB_QP_AV;
3746                 return is_valid_mask(attr_mask, req, opt);
3747         } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
3748                 req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY |
3749                        IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN;
3750                 opt = IB_QP_MIN_RNR_TIMER;
3751                 return is_valid_mask(attr_mask, req, opt);
3752         } else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) {
3753                 opt = IB_QP_MIN_RNR_TIMER;
3754                 return is_valid_mask(attr_mask, req, opt);
3755         } else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) {
3756                 return is_valid_mask(attr_mask, req, opt);
3757         }
3758         return false;
3759 }
3760
3761 /* mlx5_ib_modify_dct: modify a DCT QP
3762  * valid transitions are:
3763  * RESET to INIT: must set access_flags, pkey_index and port
3764  * INIT  to RTR : must set min_rnr_timer, tclass, flow_label,
3765  *                         mtu, gid_index and hop_limit
3766  * Other transitions and attributes are illegal
3767  */
3768 static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3769                               int attr_mask, struct ib_udata *udata)
3770 {
3771         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3772         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3773         enum ib_qp_state cur_state, new_state;
3774         int err = 0;
3775         int required = IB_QP_STATE;
3776         void *dctc;
3777
3778         if (!(attr_mask & IB_QP_STATE))
3779                 return -EINVAL;
3780
3781         cur_state = qp->state;
3782         new_state = attr->qp_state;
3783
3784         dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
3785         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3786                 required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
3787                 if (!is_valid_mask(attr_mask, required, 0))
3788                         return -EINVAL;
3789
3790                 if (attr->port_num == 0 ||
3791                     attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
3792                         mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
3793                                     attr->port_num, dev->num_ports);
3794                         return -EINVAL;
3795                 }
3796                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
3797                         MLX5_SET(dctc, dctc, rre, 1);
3798                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
3799                         MLX5_SET(dctc, dctc, rwe, 1);
3800                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) {
3801                         int atomic_mode;
3802
3803                         atomic_mode = get_atomic_mode(dev, MLX5_IB_QPT_DCT);
3804                         if (atomic_mode < 0)
3805                                 return -EOPNOTSUPP;
3806
3807                         MLX5_SET(dctc, dctc, atomic_mode, atomic_mode);
3808                         MLX5_SET(dctc, dctc, rae, 1);
3809                 }
3810                 MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index);
3811                 MLX5_SET(dctc, dctc, port, attr->port_num);
3812                 MLX5_SET(dctc, dctc, counter_set_id, dev->port[attr->port_num - 1].cnts.set_id);
3813
3814         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
3815                 struct mlx5_ib_modify_qp_resp resp = {};
3816                 u32 out[MLX5_ST_SZ_DW(create_dct_out)] = {0};
3817                 u32 min_resp_len = offsetof(typeof(resp), dctn) +
3818                                    sizeof(resp.dctn);
3819
3820                 if (udata->outlen < min_resp_len)
3821                         return -EINVAL;
3822                 resp.response_length = min_resp_len;
3823
3824                 required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU;
3825                 if (!is_valid_mask(attr_mask, required, 0))
3826                         return -EINVAL;
3827                 MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer);
3828                 MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class);
3829                 MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label);
3830                 MLX5_SET(dctc, dctc, mtu, attr->path_mtu);
3831                 MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index);
3832                 MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit);
3833
3834                 err = mlx5_core_create_dct(dev->mdev, &qp->dct.mdct, qp->dct.in,
3835                                            MLX5_ST_SZ_BYTES(create_dct_in), out,
3836                                            sizeof(out));
3837                 if (err)
3838                         return err;
3839                 resp.dctn = qp->dct.mdct.mqp.qpn;
3840                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
3841                 if (err) {
3842                         mlx5_core_destroy_dct(dev->mdev, &qp->dct.mdct);
3843                         return err;
3844                 }
3845         } else {
3846                 mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state);
3847                 return -EINVAL;
3848         }
3849         if (err)
3850                 qp->state = IB_QPS_ERR;
3851         else
3852                 qp->state = new_state;
3853         return err;
3854 }
3855
3856 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3857                       int attr_mask, struct ib_udata *udata)
3858 {
3859         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3860         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3861         struct mlx5_ib_modify_qp ucmd = {};
3862         enum ib_qp_type qp_type;
3863         enum ib_qp_state cur_state, new_state;
3864         size_t required_cmd_sz;
3865         int err = -EINVAL;
3866         int port;
3867
3868         if (ibqp->rwq_ind_tbl)
3869                 return -ENOSYS;
3870
3871         if (udata && udata->inlen) {
3872                 required_cmd_sz = offsetof(typeof(ucmd), reserved) +
3873                         sizeof(ucmd.reserved);
3874                 if (udata->inlen < required_cmd_sz)
3875                         return -EINVAL;
3876
3877                 if (udata->inlen > sizeof(ucmd) &&
3878                     !ib_is_udata_cleared(udata, sizeof(ucmd),
3879                                          udata->inlen - sizeof(ucmd)))
3880                         return -EOPNOTSUPP;
3881
3882                 if (ib_copy_from_udata(&ucmd, udata,
3883                                        min(udata->inlen, sizeof(ucmd))))
3884                         return -EFAULT;
3885
3886                 if (ucmd.comp_mask ||
3887                     memchr_inv(&ucmd.reserved, 0, sizeof(ucmd.reserved)) ||
3888                     memchr_inv(&ucmd.burst_info.reserved, 0,
3889                                sizeof(ucmd.burst_info.reserved)))
3890                         return -EOPNOTSUPP;
3891         }
3892
3893         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
3894                 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
3895
3896         if (ibqp->qp_type == IB_QPT_DRIVER)
3897                 qp_type = qp->qp_sub_type;
3898         else
3899                 qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
3900                         IB_QPT_GSI : ibqp->qp_type;
3901
3902         if (qp_type == MLX5_IB_QPT_DCT)
3903                 return mlx5_ib_modify_dct(ibqp, attr, attr_mask, udata);
3904
3905         mutex_lock(&qp->mutex);
3906
3907         cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
3908         new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
3909
3910         if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
3911                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
3912         }
3913
3914         if (qp->flags & MLX5_IB_QP_UNDERLAY) {
3915                 if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
3916                         mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
3917                                     attr_mask);
3918                         goto out;
3919                 }
3920         } else if (qp_type != MLX5_IB_QPT_REG_UMR &&
3921                    qp_type != MLX5_IB_QPT_DCI &&
3922                    !ib_modify_qp_is_ok(cur_state, new_state, qp_type,
3923                                        attr_mask)) {
3924                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
3925                             cur_state, new_state, ibqp->qp_type, attr_mask);
3926                 goto out;
3927         } else if (qp_type == MLX5_IB_QPT_DCI &&
3928                    !modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) {
3929                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
3930                             cur_state, new_state, qp_type, attr_mask);
3931                 goto out;
3932         }
3933
3934         if ((attr_mask & IB_QP_PORT) &&
3935             (attr->port_num == 0 ||
3936              attr->port_num > dev->num_ports)) {
3937                 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
3938                             attr->port_num, dev->num_ports);
3939                 goto out;
3940         }
3941
3942         if (attr_mask & IB_QP_PKEY_INDEX) {
3943                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
3944                 if (attr->pkey_index >=
3945                     dev->mdev->port_caps[port - 1].pkey_table_len) {
3946                         mlx5_ib_dbg(dev, "invalid pkey index %d\n",
3947                                     attr->pkey_index);
3948                         goto out;
3949                 }
3950         }
3951
3952         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
3953             attr->max_rd_atomic >
3954             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
3955                 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
3956                             attr->max_rd_atomic);
3957                 goto out;
3958         }
3959
3960         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
3961             attr->max_dest_rd_atomic >
3962             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
3963                 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
3964                             attr->max_dest_rd_atomic);
3965                 goto out;
3966         }
3967
3968         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
3969                 err = 0;
3970                 goto out;
3971         }
3972
3973         err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state,
3974                                   new_state, &ucmd, udata);
3975
3976 out:
3977         mutex_unlock(&qp->mutex);
3978         return err;
3979 }
3980
3981 static void _handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
3982                                    u32 wqe_sz, void **cur_edge)
3983 {
3984         u32 idx;
3985
3986         idx = (sq->cur_post + (wqe_sz >> 2)) & (sq->wqe_cnt - 1);
3987         *cur_edge = get_sq_edge(sq, idx);
3988
3989         *seg = mlx5_frag_buf_get_wqe(&sq->fbc, idx);
3990 }
3991
3992 /* handle_post_send_edge - Check if we get to SQ edge. If yes, update to the
3993  * next nearby edge and get new address translation for current WQE position.
3994  * @sq - SQ buffer.
3995  * @seg: Current WQE position (16B aligned).
3996  * @wqe_sz: Total current WQE size [16B].
3997  * @cur_edge: Updated current edge.
3998  */
3999 static inline void handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
4000                                          u32 wqe_sz, void **cur_edge)
4001 {
4002         if (likely(*seg != *cur_edge))
4003                 return;
4004
4005         _handle_post_send_edge(sq, seg, wqe_sz, cur_edge);
4006 }
4007
4008 /* memcpy_send_wqe - copy data from src to WQE and update the relevant WQ's
4009  * pointers. At the end @seg is aligned to 16B regardless the copied size.
4010  * @sq - SQ buffer.
4011  * @cur_edge: Updated current edge.
4012  * @seg: Current WQE position (16B aligned).
4013  * @wqe_sz: Total current WQE size [16B].
4014  * @src: Pointer to copy from.
4015  * @n: Number of bytes to copy.
4016  */
4017 static inline void memcpy_send_wqe(struct mlx5_ib_wq *sq, void **cur_edge,
4018                                    void **seg, u32 *wqe_sz, const void *src,
4019                                    size_t n)
4020 {
4021         while (likely(n)) {
4022                 size_t leftlen = *cur_edge - *seg;
4023                 size_t copysz = min_t(size_t, leftlen, n);
4024                 size_t stride;
4025
4026                 memcpy(*seg, src, copysz);
4027
4028                 n -= copysz;
4029                 src += copysz;
4030                 stride = !n ? ALIGN(copysz, 16) : copysz;
4031                 *seg += stride;
4032                 *wqe_sz += stride >> 4;
4033                 handle_post_send_edge(sq, seg, *wqe_sz, cur_edge);
4034         }
4035 }
4036
4037 static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
4038 {
4039         struct mlx5_ib_cq *cq;
4040         unsigned cur;
4041
4042         cur = wq->head - wq->tail;
4043         if (likely(cur + nreq < wq->max_post))
4044                 return 0;
4045
4046         cq = to_mcq(ib_cq);
4047         spin_lock(&cq->lock);
4048         cur = wq->head - wq->tail;
4049         spin_unlock(&cq->lock);
4050
4051         return cur + nreq >= wq->max_post;
4052 }
4053
4054 static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
4055                                           u64 remote_addr, u32 rkey)
4056 {
4057         rseg->raddr    = cpu_to_be64(remote_addr);
4058         rseg->rkey     = cpu_to_be32(rkey);
4059         rseg->reserved = 0;
4060 }
4061
4062 static void set_eth_seg(const struct ib_send_wr *wr, struct mlx5_ib_qp *qp,
4063                         void **seg, int *size, void **cur_edge)
4064 {
4065         struct mlx5_wqe_eth_seg *eseg = *seg;
4066
4067         memset(eseg, 0, sizeof(struct mlx5_wqe_eth_seg));
4068
4069         if (wr->send_flags & IB_SEND_IP_CSUM)
4070                 eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM |
4071                                  MLX5_ETH_WQE_L4_CSUM;
4072
4073         if (wr->opcode == IB_WR_LSO) {
4074                 struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
4075                 size_t left, copysz;
4076                 void *pdata = ud_wr->header;
4077                 size_t stride;
4078
4079                 left = ud_wr->hlen;
4080                 eseg->mss = cpu_to_be16(ud_wr->mss);
4081                 eseg->inline_hdr.sz = cpu_to_be16(left);
4082
4083                 /* memcpy_send_wqe should get a 16B align address. Hence, we
4084                  * first copy up to the current edge and then, if needed,
4085                  * fall-through to memcpy_send_wqe.
4086                  */
4087                 copysz = min_t(u64, *cur_edge - (void *)eseg->inline_hdr.start,
4088                                left);
4089                 memcpy(eseg->inline_hdr.start, pdata, copysz);
4090                 stride = ALIGN(sizeof(struct mlx5_wqe_eth_seg) -
4091                                sizeof(eseg->inline_hdr.start) + copysz, 16);
4092                 *size += stride / 16;
4093                 *seg += stride;
4094
4095                 if (copysz < left) {
4096                         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4097                         left -= copysz;
4098                         pdata += copysz;
4099                         memcpy_send_wqe(&qp->sq, cur_edge, seg, size, pdata,
4100                                         left);
4101                 }
4102
4103                 return;
4104         }
4105
4106         *seg += sizeof(struct mlx5_wqe_eth_seg);
4107         *size += sizeof(struct mlx5_wqe_eth_seg) / 16;
4108 }
4109
4110 static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
4111                              const struct ib_send_wr *wr)
4112 {
4113         memcpy(&dseg->av, &to_mah(ud_wr(wr)->ah)->av, sizeof(struct mlx5_av));
4114         dseg->av.dqp_dct = cpu_to_be32(ud_wr(wr)->remote_qpn | MLX5_EXTENDED_UD_AV);
4115         dseg->av.key.qkey.qkey = cpu_to_be32(ud_wr(wr)->remote_qkey);
4116 }
4117
4118 static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
4119 {
4120         dseg->byte_count = cpu_to_be32(sg->length);
4121         dseg->lkey       = cpu_to_be32(sg->lkey);
4122         dseg->addr       = cpu_to_be64(sg->addr);
4123 }
4124
4125 static u64 get_xlt_octo(u64 bytes)
4126 {
4127         return ALIGN(bytes, MLX5_IB_UMR_XLT_ALIGNMENT) /
4128                MLX5_IB_UMR_OCTOWORD;
4129 }
4130
4131 static __be64 frwr_mkey_mask(void)
4132 {
4133         u64 result;
4134
4135         result = MLX5_MKEY_MASK_LEN             |
4136                 MLX5_MKEY_MASK_PAGE_SIZE        |
4137                 MLX5_MKEY_MASK_START_ADDR       |
4138                 MLX5_MKEY_MASK_EN_RINVAL        |
4139                 MLX5_MKEY_MASK_KEY              |
4140                 MLX5_MKEY_MASK_LR               |
4141                 MLX5_MKEY_MASK_LW               |
4142                 MLX5_MKEY_MASK_RR               |
4143                 MLX5_MKEY_MASK_RW               |
4144                 MLX5_MKEY_MASK_A                |
4145                 MLX5_MKEY_MASK_SMALL_FENCE      |
4146                 MLX5_MKEY_MASK_FREE;
4147
4148         return cpu_to_be64(result);
4149 }
4150
4151 static __be64 sig_mkey_mask(void)
4152 {
4153         u64 result;
4154
4155         result = MLX5_MKEY_MASK_LEN             |
4156                 MLX5_MKEY_MASK_PAGE_SIZE        |
4157                 MLX5_MKEY_MASK_START_ADDR       |
4158                 MLX5_MKEY_MASK_EN_SIGERR        |
4159                 MLX5_MKEY_MASK_EN_RINVAL        |
4160                 MLX5_MKEY_MASK_KEY              |
4161                 MLX5_MKEY_MASK_LR               |
4162                 MLX5_MKEY_MASK_LW               |
4163                 MLX5_MKEY_MASK_RR               |
4164                 MLX5_MKEY_MASK_RW               |
4165                 MLX5_MKEY_MASK_SMALL_FENCE      |
4166                 MLX5_MKEY_MASK_FREE             |
4167                 MLX5_MKEY_MASK_BSF_EN;
4168
4169         return cpu_to_be64(result);
4170 }
4171
4172 static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
4173                             struct mlx5_ib_mr *mr, bool umr_inline)
4174 {
4175         int size = mr->ndescs * mr->desc_size;
4176
4177         memset(umr, 0, sizeof(*umr));
4178
4179         umr->flags = MLX5_UMR_CHECK_NOT_FREE;
4180         if (umr_inline)
4181                 umr->flags |= MLX5_UMR_INLINE;
4182         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
4183         umr->mkey_mask = frwr_mkey_mask();
4184 }
4185
4186 static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
4187 {
4188         memset(umr, 0, sizeof(*umr));
4189         umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
4190         umr->flags = MLX5_UMR_INLINE;
4191 }
4192
4193 static __be64 get_umr_enable_mr_mask(void)
4194 {
4195         u64 result;
4196
4197         result = MLX5_MKEY_MASK_KEY |
4198                  MLX5_MKEY_MASK_FREE;
4199
4200         return cpu_to_be64(result);
4201 }
4202
4203 static __be64 get_umr_disable_mr_mask(void)
4204 {
4205         u64 result;
4206
4207         result = MLX5_MKEY_MASK_FREE;
4208
4209         return cpu_to_be64(result);
4210 }
4211
4212 static __be64 get_umr_update_translation_mask(void)
4213 {
4214         u64 result;
4215
4216         result = MLX5_MKEY_MASK_LEN |
4217                  MLX5_MKEY_MASK_PAGE_SIZE |
4218                  MLX5_MKEY_MASK_START_ADDR;
4219
4220         return cpu_to_be64(result);
4221 }
4222
4223 static __be64 get_umr_update_access_mask(int atomic)
4224 {
4225         u64 result;
4226
4227         result = MLX5_MKEY_MASK_LR |
4228                  MLX5_MKEY_MASK_LW |
4229                  MLX5_MKEY_MASK_RR |
4230                  MLX5_MKEY_MASK_RW;
4231
4232         if (atomic)
4233                 result |= MLX5_MKEY_MASK_A;
4234
4235         return cpu_to_be64(result);
4236 }
4237
4238 static __be64 get_umr_update_pd_mask(void)
4239 {
4240         u64 result;
4241
4242         result = MLX5_MKEY_MASK_PD;
4243
4244         return cpu_to_be64(result);
4245 }
4246
4247 static int umr_check_mkey_mask(struct mlx5_ib_dev *dev, u64 mask)
4248 {
4249         if ((mask & MLX5_MKEY_MASK_PAGE_SIZE &&
4250              MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) ||
4251             (mask & MLX5_MKEY_MASK_A &&
4252              MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled)))
4253                 return -EPERM;
4254         return 0;
4255 }
4256
4257 static int set_reg_umr_segment(struct mlx5_ib_dev *dev,
4258                                struct mlx5_wqe_umr_ctrl_seg *umr,
4259                                const struct ib_send_wr *wr, int atomic)
4260 {
4261         const struct mlx5_umr_wr *umrwr = umr_wr(wr);
4262
4263         memset(umr, 0, sizeof(*umr));
4264
4265         if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
4266                 umr->flags = MLX5_UMR_CHECK_FREE; /* fail if free */
4267         else
4268                 umr->flags = MLX5_UMR_CHECK_NOT_FREE; /* fail if not free */
4269
4270         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(umrwr->xlt_size));
4271         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_XLT) {
4272                 u64 offset = get_xlt_octo(umrwr->offset);
4273
4274                 umr->xlt_offset = cpu_to_be16(offset & 0xffff);
4275                 umr->xlt_offset_47_16 = cpu_to_be32(offset >> 16);
4276                 umr->flags |= MLX5_UMR_TRANSLATION_OFFSET_EN;
4277         }
4278         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION)
4279                 umr->mkey_mask |= get_umr_update_translation_mask();
4280         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD_ACCESS) {
4281                 umr->mkey_mask |= get_umr_update_access_mask(atomic);
4282                 umr->mkey_mask |= get_umr_update_pd_mask();
4283         }
4284         if (wr->send_flags & MLX5_IB_SEND_UMR_ENABLE_MR)
4285                 umr->mkey_mask |= get_umr_enable_mr_mask();
4286         if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
4287                 umr->mkey_mask |= get_umr_disable_mr_mask();
4288
4289         if (!wr->num_sge)
4290                 umr->flags |= MLX5_UMR_INLINE;
4291
4292         return umr_check_mkey_mask(dev, be64_to_cpu(umr->mkey_mask));
4293 }
4294
4295 static u8 get_umr_flags(int acc)
4296 {
4297         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
4298                (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
4299                (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
4300                (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
4301                 MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
4302 }
4303
4304 static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
4305                              struct mlx5_ib_mr *mr,
4306                              u32 key, int access)
4307 {
4308         int ndescs = ALIGN(mr->ndescs, 8) >> 1;
4309
4310         memset(seg, 0, sizeof(*seg));
4311
4312         if (mr->access_mode == MLX5_MKC_ACCESS_MODE_MTT)
4313                 seg->log2_page_size = ilog2(mr->ibmr.page_size);
4314         else if (mr->access_mode == MLX5_MKC_ACCESS_MODE_KLMS)
4315                 /* KLMs take twice the size of MTTs */
4316                 ndescs *= 2;
4317
4318         seg->flags = get_umr_flags(access) | mr->access_mode;
4319         seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
4320         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
4321         seg->start_addr = cpu_to_be64(mr->ibmr.iova);
4322         seg->len = cpu_to_be64(mr->ibmr.length);
4323         seg->xlt_oct_size = cpu_to_be32(ndescs);
4324 }
4325
4326 static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
4327 {
4328         memset(seg, 0, sizeof(*seg));
4329         seg->status = MLX5_MKEY_STATUS_FREE;
4330 }
4331
4332 static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg,
4333                                  const struct ib_send_wr *wr)
4334 {
4335         const struct mlx5_umr_wr *umrwr = umr_wr(wr);
4336
4337         memset(seg, 0, sizeof(*seg));
4338         if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
4339                 seg->status = MLX5_MKEY_STATUS_FREE;
4340
4341         seg->flags = convert_access(umrwr->access_flags);
4342         if (umrwr->pd)
4343                 seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
4344         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION &&
4345             !umrwr->length)
4346                 seg->flags_pd |= cpu_to_be32(MLX5_MKEY_LEN64);
4347
4348         seg->start_addr = cpu_to_be64(umrwr->virt_addr);
4349         seg->len = cpu_to_be64(umrwr->length);
4350         seg->log2_page_size = umrwr->page_shift;
4351         seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
4352                                        mlx5_mkey_variant(umrwr->mkey));
4353 }
4354
4355 static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
4356                              struct mlx5_ib_mr *mr,
4357                              struct mlx5_ib_pd *pd)
4358 {
4359         int bcount = mr->desc_size * mr->ndescs;
4360
4361         dseg->addr = cpu_to_be64(mr->desc_map);
4362         dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
4363         dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
4364 }
4365
4366 static __be32 send_ieth(const struct ib_send_wr *wr)
4367 {
4368         switch (wr->opcode) {
4369         case IB_WR_SEND_WITH_IMM:
4370         case IB_WR_RDMA_WRITE_WITH_IMM:
4371                 return wr->ex.imm_data;
4372
4373         case IB_WR_SEND_WITH_INV:
4374                 return cpu_to_be32(wr->ex.invalidate_rkey);
4375
4376         default:
4377                 return 0;
4378         }
4379 }
4380
4381 static u8 calc_sig(void *wqe, int size)
4382 {
4383         u8 *p = wqe;
4384         u8 res = 0;
4385         int i;
4386
4387         for (i = 0; i < size; i++)
4388                 res ^= p[i];
4389
4390         return ~res;
4391 }
4392
4393 static u8 wq_sig(void *wqe)
4394 {
4395         return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
4396 }
4397
4398 static int set_data_inl_seg(struct mlx5_ib_qp *qp, const struct ib_send_wr *wr,
4399                             void **wqe, int *wqe_sz, void **cur_edge)
4400 {
4401         struct mlx5_wqe_inline_seg *seg;
4402         size_t offset;
4403         int inl = 0;
4404         int i;
4405
4406         seg = *wqe;
4407         *wqe += sizeof(*seg);
4408         offset = sizeof(*seg);
4409
4410         for (i = 0; i < wr->num_sge; i++) {
4411                 size_t len  = wr->sg_list[i].length;
4412                 void *addr = (void *)(unsigned long)(wr->sg_list[i].addr);
4413
4414                 inl += len;
4415
4416                 if (unlikely(inl > qp->max_inline_data))
4417                         return -ENOMEM;
4418
4419                 while (likely(len)) {
4420                         size_t leftlen;
4421                         size_t copysz;
4422
4423                         handle_post_send_edge(&qp->sq, wqe,
4424                                               *wqe_sz + (offset >> 4),
4425                                               cur_edge);
4426
4427                         leftlen = *cur_edge - *wqe;
4428                         copysz = min_t(size_t, leftlen, len);
4429
4430                         memcpy(*wqe, addr, copysz);
4431                         len -= copysz;
4432                         addr += copysz;
4433                         *wqe += copysz;
4434                         offset += copysz;
4435                 }
4436         }
4437
4438         seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
4439
4440         *wqe_sz +=  ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
4441
4442         return 0;
4443 }
4444
4445 static u16 prot_field_size(enum ib_signature_type type)
4446 {
4447         switch (type) {
4448         case IB_SIG_TYPE_T10_DIF:
4449                 return MLX5_DIF_SIZE;
4450         default:
4451                 return 0;
4452         }
4453 }
4454
4455 static u8 bs_selector(int block_size)
4456 {
4457         switch (block_size) {
4458         case 512:           return 0x1;
4459         case 520:           return 0x2;
4460         case 4096:          return 0x3;
4461         case 4160:          return 0x4;
4462         case 1073741824:    return 0x5;
4463         default:            return 0;
4464         }
4465 }
4466
4467 static void mlx5_fill_inl_bsf(struct ib_sig_domain *domain,
4468                               struct mlx5_bsf_inl *inl)
4469 {
4470         /* Valid inline section and allow BSF refresh */
4471         inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID |
4472                                        MLX5_BSF_REFRESH_DIF);
4473         inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag);
4474         inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag);
4475         /* repeating block */
4476         inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK;
4477         inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ?
4478                         MLX5_DIF_CRC : MLX5_DIF_IPCS;
4479
4480         if (domain->sig.dif.ref_remap)
4481                 inl->dif_inc_ref_guard_check |= MLX5_BSF_INC_REFTAG;
4482
4483         if (domain->sig.dif.app_escape) {
4484                 if (domain->sig.dif.ref_escape)
4485                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPREF_ESCAPE;
4486                 else
4487                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPTAG_ESCAPE;
4488         }
4489
4490         inl->dif_app_bitmask_check =
4491                 cpu_to_be16(domain->sig.dif.apptag_check_mask);
4492 }
4493
4494 static int mlx5_set_bsf(struct ib_mr *sig_mr,
4495                         struct ib_sig_attrs *sig_attrs,
4496                         struct mlx5_bsf *bsf, u32 data_size)
4497 {
4498         struct mlx5_core_sig_ctx *msig = to_mmr(sig_mr)->sig;
4499         struct mlx5_bsf_basic *basic = &bsf->basic;
4500         struct ib_sig_domain *mem = &sig_attrs->mem;
4501         struct ib_sig_domain *wire = &sig_attrs->wire;
4502
4503         memset(bsf, 0, sizeof(*bsf));
4504
4505         /* Basic + Extended + Inline */
4506         basic->bsf_size_sbs = 1 << 7;
4507         /* Input domain check byte mask */
4508         basic->check_byte_mask = sig_attrs->check_mask;
4509         basic->raw_data_size = cpu_to_be32(data_size);
4510
4511         /* Memory domain */
4512         switch (sig_attrs->mem.sig_type) {
4513         case IB_SIG_TYPE_NONE:
4514                 break;
4515         case IB_SIG_TYPE_T10_DIF:
4516                 basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval);
4517                 basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx);
4518                 mlx5_fill_inl_bsf(mem, &bsf->m_inl);
4519                 break;
4520         default:
4521                 return -EINVAL;
4522         }
4523
4524         /* Wire domain */
4525         switch (sig_attrs->wire.sig_type) {
4526         case IB_SIG_TYPE_NONE:
4527                 break;
4528         case IB_SIG_TYPE_T10_DIF:
4529                 if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval &&
4530                     mem->sig_type == wire->sig_type) {
4531                         /* Same block structure */
4532                         basic->bsf_size_sbs |= 1 << 4;
4533                         if (mem->sig.dif.bg_type == wire->sig.dif.bg_type)
4534                                 basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK;
4535                         if (mem->sig.dif.app_tag == wire->sig.dif.app_tag)
4536                                 basic->wire.copy_byte_mask |= MLX5_CPY_APP_MASK;
4537                         if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag)
4538                                 basic->wire.copy_byte_mask |= MLX5_CPY_REF_MASK;
4539                 } else
4540                         basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval);
4541
4542                 basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx);
4543                 mlx5_fill_inl_bsf(wire, &bsf->w_inl);
4544                 break;
4545         default:
4546                 return -EINVAL;
4547         }
4548
4549         return 0;
4550 }
4551
4552 static int set_sig_data_segment(const struct ib_sig_handover_wr *wr,
4553                                 struct mlx5_ib_qp *qp, void **seg,
4554                                 int *size, void **cur_edge)
4555 {
4556         struct ib_sig_attrs *sig_attrs = wr->sig_attrs;
4557         struct ib_mr *sig_mr = wr->sig_mr;
4558         struct mlx5_bsf *bsf;
4559         u32 data_len = wr->wr.sg_list->length;
4560         u32 data_key = wr->wr.sg_list->lkey;
4561         u64 data_va = wr->wr.sg_list->addr;
4562         int ret;
4563         int wqe_size;
4564
4565         if (!wr->prot ||
4566             (data_key == wr->prot->lkey &&
4567              data_va == wr->prot->addr &&
4568              data_len == wr->prot->length)) {
4569                 /**
4570                  * Source domain doesn't contain signature information
4571                  * or data and protection are interleaved in memory.
4572                  * So need construct:
4573                  *                  ------------------
4574                  *                 |     data_klm     |
4575                  *                  ------------------
4576                  *                 |       BSF        |
4577                  *                  ------------------
4578                  **/
4579                 struct mlx5_klm *data_klm = *seg;
4580
4581                 data_klm->bcount = cpu_to_be32(data_len);
4582                 data_klm->key = cpu_to_be32(data_key);
4583                 data_klm->va = cpu_to_be64(data_va);
4584                 wqe_size = ALIGN(sizeof(*data_klm), 64);
4585         } else {
4586                 /**
4587                  * Source domain contains signature information
4588                  * So need construct a strided block format:
4589                  *               ---------------------------
4590                  *              |     stride_block_ctrl     |
4591                  *               ---------------------------
4592                  *              |          data_klm         |
4593                  *               ---------------------------
4594                  *              |          prot_klm         |
4595                  *               ---------------------------
4596                  *              |             BSF           |
4597                  *               ---------------------------
4598                  **/
4599                 struct mlx5_stride_block_ctrl_seg *sblock_ctrl;
4600                 struct mlx5_stride_block_entry *data_sentry;
4601                 struct mlx5_stride_block_entry *prot_sentry;
4602                 u32 prot_key = wr->prot->lkey;
4603                 u64 prot_va = wr->prot->addr;
4604                 u16 block_size = sig_attrs->mem.sig.dif.pi_interval;
4605                 int prot_size;
4606
4607                 sblock_ctrl = *seg;
4608                 data_sentry = (void *)sblock_ctrl + sizeof(*sblock_ctrl);
4609                 prot_sentry = (void *)data_sentry + sizeof(*data_sentry);
4610
4611                 prot_size = prot_field_size(sig_attrs->mem.sig_type);
4612                 if (!prot_size) {
4613                         pr_err("Bad block size given: %u\n", block_size);
4614                         return -EINVAL;
4615                 }
4616                 sblock_ctrl->bcount_per_cycle = cpu_to_be32(block_size +
4617                                                             prot_size);
4618                 sblock_ctrl->op = cpu_to_be32(MLX5_STRIDE_BLOCK_OP);
4619                 sblock_ctrl->repeat_count = cpu_to_be32(data_len / block_size);
4620                 sblock_ctrl->num_entries = cpu_to_be16(2);
4621
4622                 data_sentry->bcount = cpu_to_be16(block_size);
4623                 data_sentry->key = cpu_to_be32(data_key);
4624                 data_sentry->va = cpu_to_be64(data_va);
4625                 data_sentry->stride = cpu_to_be16(block_size);
4626
4627                 prot_sentry->bcount = cpu_to_be16(prot_size);
4628                 prot_sentry->key = cpu_to_be32(prot_key);
4629                 prot_sentry->va = cpu_to_be64(prot_va);
4630                 prot_sentry->stride = cpu_to_be16(prot_size);
4631
4632                 wqe_size = ALIGN(sizeof(*sblock_ctrl) + sizeof(*data_sentry) +
4633                                  sizeof(*prot_sentry), 64);
4634         }
4635
4636         *seg += wqe_size;
4637         *size += wqe_size / 16;
4638         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4639
4640         bsf = *seg;
4641         ret = mlx5_set_bsf(sig_mr, sig_attrs, bsf, data_len);
4642         if (ret)
4643                 return -EINVAL;
4644
4645         *seg += sizeof(*bsf);
4646         *size += sizeof(*bsf) / 16;
4647         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4648
4649         return 0;
4650 }
4651
4652 static void set_sig_mkey_segment(struct mlx5_mkey_seg *seg,
4653                                  const struct ib_sig_handover_wr *wr, u32 size,
4654                                  u32 length, u32 pdn)
4655 {
4656         struct ib_mr *sig_mr = wr->sig_mr;
4657         u32 sig_key = sig_mr->rkey;
4658         u8 sigerr = to_mmr(sig_mr)->sig->sigerr_count & 1;
4659
4660         memset(seg, 0, sizeof(*seg));
4661
4662         seg->flags = get_umr_flags(wr->access_flags) |
4663                                    MLX5_MKC_ACCESS_MODE_KLMS;
4664         seg->qpn_mkey7_0 = cpu_to_be32((sig_key & 0xff) | 0xffffff00);
4665         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL | sigerr << 26 |
4666                                     MLX5_MKEY_BSF_EN | pdn);
4667         seg->len = cpu_to_be64(length);
4668         seg->xlt_oct_size = cpu_to_be32(get_xlt_octo(size));
4669         seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
4670 }
4671
4672 static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
4673                                 u32 size)
4674 {
4675         memset(umr, 0, sizeof(*umr));
4676
4677         umr->flags = MLX5_FLAGS_INLINE | MLX5_FLAGS_CHECK_FREE;
4678         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
4679         umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);
4680         umr->mkey_mask = sig_mkey_mask();
4681 }
4682
4683
4684 static int set_sig_umr_wr(const struct ib_send_wr *send_wr,
4685                           struct mlx5_ib_qp *qp, void **seg, int *size,
4686                           void **cur_edge)
4687 {
4688         const struct ib_sig_handover_wr *wr = sig_handover_wr(send_wr);
4689         struct mlx5_ib_mr *sig_mr = to_mmr(wr->sig_mr);
4690         u32 pdn = get_pd(qp)->pdn;
4691         u32 xlt_size;
4692         int region_len, ret;
4693
4694         if (unlikely(wr->wr.num_sge != 1) ||
4695             unlikely(wr->access_flags & IB_ACCESS_REMOTE_ATOMIC) ||
4696             unlikely(!sig_mr->sig) || unlikely(!qp->signature_en) ||
4697             unlikely(!sig_mr->sig->sig_status_checked))
4698                 return -EINVAL;
4699
4700         /* length of the protected region, data + protection */
4701         region_len = wr->wr.sg_list->length;
4702         if (wr->prot &&
4703             (wr->prot->lkey != wr->wr.sg_list->lkey  ||
4704              wr->prot->addr != wr->wr.sg_list->addr  ||
4705              wr->prot->length != wr->wr.sg_list->length))
4706                 region_len += wr->prot->length;
4707
4708         /**
4709          * KLM octoword size - if protection was provided
4710          * then we use strided block format (3 octowords),
4711          * else we use single KLM (1 octoword)
4712          **/
4713         xlt_size = wr->prot ? 0x30 : sizeof(struct mlx5_klm);
4714
4715         set_sig_umr_segment(*seg, xlt_size);
4716         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4717         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4718         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4719
4720         set_sig_mkey_segment(*seg, wr, xlt_size, region_len, pdn);
4721         *seg += sizeof(struct mlx5_mkey_seg);
4722         *size += sizeof(struct mlx5_mkey_seg) / 16;
4723         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4724
4725         ret = set_sig_data_segment(wr, qp, seg, size, cur_edge);
4726         if (ret)
4727                 return ret;
4728
4729         sig_mr->sig->sig_status_checked = false;
4730         return 0;
4731 }
4732
4733 static int set_psv_wr(struct ib_sig_domain *domain,
4734                       u32 psv_idx, void **seg, int *size)
4735 {
4736         struct mlx5_seg_set_psv *psv_seg = *seg;
4737
4738         memset(psv_seg, 0, sizeof(*psv_seg));
4739         psv_seg->psv_num = cpu_to_be32(psv_idx);
4740         switch (domain->sig_type) {
4741         case IB_SIG_TYPE_NONE:
4742                 break;
4743         case IB_SIG_TYPE_T10_DIF:
4744                 psv_seg->transient_sig = cpu_to_be32(domain->sig.dif.bg << 16 |
4745                                                      domain->sig.dif.app_tag);
4746                 psv_seg->ref_tag = cpu_to_be32(domain->sig.dif.ref_tag);
4747                 break;
4748         default:
4749                 pr_err("Bad signature type (%d) is given.\n",
4750                        domain->sig_type);
4751                 return -EINVAL;
4752         }
4753
4754         *seg += sizeof(*psv_seg);
4755         *size += sizeof(*psv_seg) / 16;
4756
4757         return 0;
4758 }
4759
4760 static int set_reg_wr(struct mlx5_ib_qp *qp,
4761                       const struct ib_reg_wr *wr,
4762                       void **seg, int *size, void **cur_edge)
4763 {
4764         struct mlx5_ib_mr *mr = to_mmr(wr->mr);
4765         struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
4766         size_t mr_list_size = mr->ndescs * mr->desc_size;
4767         bool umr_inline = mr_list_size <= MLX5_IB_SQ_UMR_INLINE_THRESHOLD;
4768
4769         if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
4770                 mlx5_ib_warn(to_mdev(qp->ibqp.device),
4771                              "Invalid IB_SEND_INLINE send flag\n");
4772                 return -EINVAL;
4773         }
4774
4775         set_reg_umr_seg(*seg, mr, umr_inline);
4776         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4777         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4778         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4779
4780         set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
4781         *seg += sizeof(struct mlx5_mkey_seg);
4782         *size += sizeof(struct mlx5_mkey_seg) / 16;
4783         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4784
4785         if (umr_inline) {
4786                 memcpy_send_wqe(&qp->sq, cur_edge, seg, size, mr->descs,
4787                                 mr_list_size);
4788                 *size = ALIGN(*size, MLX5_SEND_WQE_BB >> 4);
4789         } else {
4790                 set_reg_data_seg(*seg, mr, pd);
4791                 *seg += sizeof(struct mlx5_wqe_data_seg);
4792                 *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
4793         }
4794         return 0;
4795 }
4796
4797 static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size,
4798                         void **cur_edge)
4799 {
4800         set_linv_umr_seg(*seg);
4801         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4802         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4803         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4804         set_linv_mkey_seg(*seg);
4805         *seg += sizeof(struct mlx5_mkey_seg);
4806         *size += sizeof(struct mlx5_mkey_seg) / 16;
4807         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4808 }
4809
4810 static void dump_wqe(struct mlx5_ib_qp *qp, u32 idx, int size_16)
4811 {
4812         __be32 *p = NULL;
4813         int i, j;
4814
4815         pr_debug("dump WQE index %u:\n", idx);
4816         for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
4817                 if ((i & 0xf) == 0) {
4818                         p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, idx);
4819                         pr_debug("WQBB at %p:\n", (void *)p);
4820                         j = 0;
4821                         idx = (idx + 1) & (qp->sq.wqe_cnt - 1);
4822                 }
4823                 pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
4824                          be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
4825                          be32_to_cpu(p[j + 3]));
4826         }
4827 }
4828
4829 static int __begin_wqe(struct mlx5_ib_qp *qp, void **seg,
4830                        struct mlx5_wqe_ctrl_seg **ctrl,
4831                        const struct ib_send_wr *wr, unsigned int *idx,
4832                        int *size, void **cur_edge, int nreq,
4833                        bool send_signaled, bool solicited)
4834 {
4835         if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)))
4836                 return -ENOMEM;
4837
4838         *idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
4839         *seg = mlx5_frag_buf_get_wqe(&qp->sq.fbc, *idx);
4840         *ctrl = *seg;
4841         *(uint32_t *)(*seg + 8) = 0;
4842         (*ctrl)->imm = send_ieth(wr);
4843         (*ctrl)->fm_ce_se = qp->sq_signal_bits |
4844                 (send_signaled ? MLX5_WQE_CTRL_CQ_UPDATE : 0) |
4845                 (solicited ? MLX5_WQE_CTRL_SOLICITED : 0);
4846
4847         *seg += sizeof(**ctrl);
4848         *size = sizeof(**ctrl) / 16;
4849         *cur_edge = qp->sq.cur_edge;
4850
4851         return 0;
4852 }
4853
4854 static int begin_wqe(struct mlx5_ib_qp *qp, void **seg,
4855                      struct mlx5_wqe_ctrl_seg **ctrl,
4856                      const struct ib_send_wr *wr, unsigned *idx,
4857                      int *size, void **cur_edge, int nreq)
4858 {
4859         return __begin_wqe(qp, seg, ctrl, wr, idx, size, cur_edge, nreq,
4860                            wr->send_flags & IB_SEND_SIGNALED,
4861                            wr->send_flags & IB_SEND_SOLICITED);
4862 }
4863
4864 static void finish_wqe(struct mlx5_ib_qp *qp,
4865                        struct mlx5_wqe_ctrl_seg *ctrl,
4866                        void *seg, u8 size, void *cur_edge,
4867                        unsigned int idx, u64 wr_id, int nreq, u8 fence,
4868                        u32 mlx5_opcode)
4869 {
4870         u8 opmod = 0;
4871
4872         ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
4873                                              mlx5_opcode | ((u32)opmod << 24));
4874         ctrl->qpn_ds = cpu_to_be32(size | (qp->trans_qp.base.mqp.qpn << 8));
4875         ctrl->fm_ce_se |= fence;
4876         if (unlikely(qp->wq_sig))
4877                 ctrl->signature = wq_sig(ctrl);
4878
4879         qp->sq.wrid[idx] = wr_id;
4880         qp->sq.w_list[idx].opcode = mlx5_opcode;
4881         qp->sq.wqe_head[idx] = qp->sq.head + nreq;
4882         qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
4883         qp->sq.w_list[idx].next = qp->sq.cur_post;
4884
4885         /* We save the edge which was possibly updated during the WQE
4886          * construction, into SQ's cache.
4887          */
4888         seg = PTR_ALIGN(seg, MLX5_SEND_WQE_BB);
4889         qp->sq.cur_edge = (unlikely(seg == cur_edge)) ?
4890                           get_sq_edge(&qp->sq, qp->sq.cur_post &
4891                                       (qp->sq.wqe_cnt - 1)) :
4892                           cur_edge;
4893 }
4894
4895 static int _mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
4896                               const struct ib_send_wr **bad_wr, bool drain)
4897 {
4898         struct mlx5_wqe_ctrl_seg *ctrl = NULL;  /* compiler warning */
4899         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4900         struct mlx5_core_dev *mdev = dev->mdev;
4901         struct mlx5_ib_qp *qp;
4902         struct mlx5_ib_mr *mr;
4903         struct mlx5_wqe_xrc_seg *xrc;
4904         struct mlx5_bf *bf;
4905         void *cur_edge;
4906         int uninitialized_var(size);
4907         unsigned long flags;
4908         unsigned idx;
4909         int err = 0;
4910         int num_sge;
4911         void *seg;
4912         int nreq;
4913         int i;
4914         u8 next_fence = 0;
4915         u8 fence;
4916
4917         if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR &&
4918                      !drain)) {
4919                 *bad_wr = wr;
4920                 return -EIO;
4921         }
4922
4923         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4924                 return mlx5_ib_gsi_post_send(ibqp, wr, bad_wr);
4925
4926         qp = to_mqp(ibqp);
4927         bf = &qp->bf;
4928
4929         spin_lock_irqsave(&qp->sq.lock, flags);
4930
4931         for (nreq = 0; wr; nreq++, wr = wr->next) {
4932                 if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
4933                         mlx5_ib_warn(dev, "\n");
4934                         err = -EINVAL;
4935                         *bad_wr = wr;
4936                         goto out;
4937                 }
4938
4939                 num_sge = wr->num_sge;
4940                 if (unlikely(num_sge > qp->sq.max_gs)) {
4941                         mlx5_ib_warn(dev, "\n");
4942                         err = -EINVAL;
4943                         *bad_wr = wr;
4944                         goto out;
4945                 }
4946
4947                 err = begin_wqe(qp, &seg, &ctrl, wr, &idx, &size, &cur_edge,
4948                                 nreq);
4949                 if (err) {
4950                         mlx5_ib_warn(dev, "\n");
4951                         err = -ENOMEM;
4952                         *bad_wr = wr;
4953                         goto out;
4954                 }
4955
4956                 if (wr->opcode == IB_WR_REG_MR) {
4957                         fence = dev->umr_fence;
4958                         next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
4959                 } else  {
4960                         if (wr->send_flags & IB_SEND_FENCE) {
4961                                 if (qp->next_fence)
4962                                         fence = MLX5_FENCE_MODE_SMALL_AND_FENCE;
4963                                 else
4964                                         fence = MLX5_FENCE_MODE_FENCE;
4965                         } else {
4966                                 fence = qp->next_fence;
4967                         }
4968                 }
4969
4970                 switch (ibqp->qp_type) {
4971                 case IB_QPT_XRC_INI:
4972                         xrc = seg;
4973                         seg += sizeof(*xrc);
4974                         size += sizeof(*xrc) / 16;
4975                         /* fall through */
4976                 case IB_QPT_RC:
4977                         switch (wr->opcode) {
4978                         case IB_WR_RDMA_READ:
4979                         case IB_WR_RDMA_WRITE:
4980                         case IB_WR_RDMA_WRITE_WITH_IMM:
4981                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
4982                                               rdma_wr(wr)->rkey);
4983                                 seg += sizeof(struct mlx5_wqe_raddr_seg);
4984                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
4985                                 break;
4986
4987                         case IB_WR_ATOMIC_CMP_AND_SWP:
4988                         case IB_WR_ATOMIC_FETCH_AND_ADD:
4989                         case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
4990                                 mlx5_ib_warn(dev, "Atomic operations are not supported yet\n");
4991                                 err = -ENOSYS;
4992                                 *bad_wr = wr;
4993                                 goto out;
4994
4995                         case IB_WR_LOCAL_INV:
4996                                 qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
4997                                 ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
4998                                 set_linv_wr(qp, &seg, &size, &cur_edge);
4999                                 num_sge = 0;
5000                                 break;
5001
5002                         case IB_WR_REG_MR:
5003                                 qp->sq.wr_data[idx] = IB_WR_REG_MR;
5004                                 ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
5005                                 err = set_reg_wr(qp, reg_wr(wr), &seg, &size,
5006                                                  &cur_edge);
5007                                 if (err) {
5008                                         *bad_wr = wr;
5009                                         goto out;
5010                                 }
5011                                 num_sge = 0;
5012                                 break;
5013
5014                         case IB_WR_REG_SIG_MR:
5015                                 qp->sq.wr_data[idx] = IB_WR_REG_SIG_MR;
5016                                 mr = to_mmr(sig_handover_wr(wr)->sig_mr);
5017
5018                                 ctrl->imm = cpu_to_be32(mr->ibmr.rkey);
5019                                 err = set_sig_umr_wr(wr, qp, &seg, &size,
5020                                                      &cur_edge);
5021                                 if (err) {
5022                                         mlx5_ib_warn(dev, "\n");
5023                                         *bad_wr = wr;
5024                                         goto out;
5025                                 }
5026
5027                                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
5028                                            wr->wr_id, nreq, fence,
5029                                            MLX5_OPCODE_UMR);
5030                                 /*
5031                                  * SET_PSV WQEs are not signaled and solicited
5032                                  * on error
5033                                  */
5034                                 err = __begin_wqe(qp, &seg, &ctrl, wr, &idx,
5035                                                   &size, &cur_edge, nreq, false,
5036                                                   true);
5037                                 if (err) {
5038                                         mlx5_ib_warn(dev, "\n");
5039                                         err = -ENOMEM;
5040                                         *bad_wr = wr;
5041                                         goto out;
5042                                 }
5043
5044                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->mem,
5045                                                  mr->sig->psv_memory.psv_idx, &seg,
5046                                                  &size);
5047                                 if (err) {
5048                                         mlx5_ib_warn(dev, "\n");
5049                                         *bad_wr = wr;
5050                                         goto out;
5051                                 }
5052
5053                                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
5054                                            wr->wr_id, nreq, fence,
5055                                            MLX5_OPCODE_SET_PSV);
5056                                 err = __begin_wqe(qp, &seg, &ctrl, wr, &idx,
5057                                                   &size, &cur_edge, nreq, false,
5058                                                   true);
5059                                 if (err) {
5060                                         mlx5_ib_warn(dev, "\n");
5061                                         err = -ENOMEM;
5062                                         *bad_wr = wr;
5063                                         goto out;
5064                                 }
5065
5066                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->wire,
5067                                                  mr->sig->psv_wire.psv_idx, &seg,
5068                                                  &size);
5069                                 if (err) {
5070                                         mlx5_ib_warn(dev, "\n");
5071                                         *bad_wr = wr;
5072                                         goto out;
5073                                 }
5074
5075                                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
5076                                            wr->wr_id, nreq, fence,
5077                                            MLX5_OPCODE_SET_PSV);
5078                                 qp->next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
5079                                 num_sge = 0;
5080                                 goto skip_psv;
5081
5082                         default:
5083                                 break;
5084                         }
5085                         break;
5086
5087                 case IB_QPT_UC:
5088                         switch (wr->opcode) {
5089                         case IB_WR_RDMA_WRITE:
5090                         case IB_WR_RDMA_WRITE_WITH_IMM:
5091                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
5092                                               rdma_wr(wr)->rkey);
5093                                 seg  += sizeof(struct mlx5_wqe_raddr_seg);
5094                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
5095                                 break;
5096
5097                         default:
5098                                 break;
5099                         }
5100                         break;
5101
5102                 case IB_QPT_SMI:
5103                         if (unlikely(!mdev->port_caps[qp->port - 1].has_smi)) {
5104                                 mlx5_ib_warn(dev, "Send SMP MADs is not allowed\n");
5105                                 err = -EPERM;
5106                                 *bad_wr = wr;
5107                                 goto out;
5108                         }
5109                         /* fall through */
5110                 case MLX5_IB_QPT_HW_GSI:
5111                         set_datagram_seg(seg, wr);
5112                         seg += sizeof(struct mlx5_wqe_datagram_seg);
5113                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
5114                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5115
5116                         break;
5117                 case IB_QPT_UD:
5118                         set_datagram_seg(seg, wr);
5119                         seg += sizeof(struct mlx5_wqe_datagram_seg);
5120                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
5121                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5122
5123                         /* handle qp that supports ud offload */
5124                         if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) {
5125                                 struct mlx5_wqe_eth_pad *pad;
5126
5127                                 pad = seg;
5128                                 memset(pad, 0, sizeof(struct mlx5_wqe_eth_pad));
5129                                 seg += sizeof(struct mlx5_wqe_eth_pad);
5130                                 size += sizeof(struct mlx5_wqe_eth_pad) / 16;
5131                                 set_eth_seg(wr, qp, &seg, &size, &cur_edge);
5132                                 handle_post_send_edge(&qp->sq, &seg, size,
5133                                                       &cur_edge);
5134                         }
5135                         break;
5136                 case MLX5_IB_QPT_REG_UMR:
5137                         if (wr->opcode != MLX5_IB_WR_UMR) {
5138                                 err = -EINVAL;
5139                                 mlx5_ib_warn(dev, "bad opcode\n");
5140                                 goto out;
5141                         }
5142                         qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
5143                         ctrl->imm = cpu_to_be32(umr_wr(wr)->mkey);
5144                         err = set_reg_umr_segment(dev, seg, wr, !!(MLX5_CAP_GEN(mdev, atomic)));
5145                         if (unlikely(err))
5146                                 goto out;
5147                         seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
5148                         size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
5149                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5150                         set_reg_mkey_segment(seg, wr);
5151                         seg += sizeof(struct mlx5_mkey_seg);
5152                         size += sizeof(struct mlx5_mkey_seg) / 16;
5153                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5154                         break;
5155
5156                 default:
5157                         break;
5158                 }
5159
5160                 if (wr->send_flags & IB_SEND_INLINE && num_sge) {
5161                         err = set_data_inl_seg(qp, wr, &seg, &size, &cur_edge);
5162                         if (unlikely(err)) {
5163                                 mlx5_ib_warn(dev, "\n");
5164                                 *bad_wr = wr;
5165                                 goto out;
5166                         }
5167                 } else {
5168                         for (i = 0; i < num_sge; i++) {
5169                                 handle_post_send_edge(&qp->sq, &seg, size,
5170                                                       &cur_edge);
5171                                 if (likely(wr->sg_list[i].length)) {
5172                                         set_data_ptr_seg
5173                                         ((struct mlx5_wqe_data_seg *)seg,
5174                                          wr->sg_list + i);
5175                                         size += sizeof(struct mlx5_wqe_data_seg) / 16;
5176                                         seg += sizeof(struct mlx5_wqe_data_seg);
5177                                 }
5178                         }
5179                 }
5180
5181                 qp->next_fence = next_fence;
5182                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx, wr->wr_id, nreq,
5183                            fence, mlx5_ib_opcode[wr->opcode]);
5184 skip_psv:
5185                 if (0)
5186                         dump_wqe(qp, idx, size);
5187         }
5188
5189 out:
5190         if (likely(nreq)) {
5191                 qp->sq.head += nreq;
5192
5193                 /* Make sure that descriptors are written before
5194                  * updating doorbell record and ringing the doorbell
5195                  */
5196                 wmb();
5197
5198                 qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
5199
5200                 /* Make sure doorbell record is visible to the HCA before
5201                  * we hit doorbell */
5202                 wmb();
5203
5204                 /* currently we support only regular doorbells */
5205                 mlx5_write64((__be32 *)ctrl, bf->bfreg->map + bf->offset);
5206                 /* Make sure doorbells don't leak out of SQ spinlock
5207                  * and reach the HCA out of order.
5208                  */
5209                 bf->offset ^= bf->buf_size;
5210         }
5211
5212         spin_unlock_irqrestore(&qp->sq.lock, flags);
5213
5214         return err;
5215 }
5216
5217 int mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
5218                       const struct ib_send_wr **bad_wr)
5219 {
5220         return _mlx5_ib_post_send(ibqp, wr, bad_wr, false);
5221 }
5222
5223 static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
5224 {
5225         sig->signature = calc_sig(sig, size);
5226 }
5227
5228 static int _mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
5229                       const struct ib_recv_wr **bad_wr, bool drain)
5230 {
5231         struct mlx5_ib_qp *qp = to_mqp(ibqp);
5232         struct mlx5_wqe_data_seg *scat;
5233         struct mlx5_rwqe_sig *sig;
5234         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
5235         struct mlx5_core_dev *mdev = dev->mdev;
5236         unsigned long flags;
5237         int err = 0;
5238         int nreq;
5239         int ind;
5240         int i;
5241
5242         if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR &&
5243                      !drain)) {
5244                 *bad_wr = wr;
5245                 return -EIO;
5246         }
5247
5248         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
5249                 return mlx5_ib_gsi_post_recv(ibqp, wr, bad_wr);
5250
5251         spin_lock_irqsave(&qp->rq.lock, flags);
5252
5253         ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
5254
5255         for (nreq = 0; wr; nreq++, wr = wr->next) {
5256                 if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
5257                         err = -ENOMEM;
5258                         *bad_wr = wr;
5259                         goto out;
5260                 }
5261
5262                 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
5263                         err = -EINVAL;
5264                         *bad_wr = wr;
5265                         goto out;
5266                 }
5267
5268                 scat = mlx5_frag_buf_get_wqe(&qp->rq.fbc, ind);
5269                 if (qp->wq_sig)
5270                         scat++;
5271
5272                 for (i = 0; i < wr->num_sge; i++)
5273                         set_data_ptr_seg(scat + i, wr->sg_list + i);
5274
5275                 if (i < qp->rq.max_gs) {
5276                         scat[i].byte_count = 0;
5277                         scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
5278                         scat[i].addr       = 0;
5279                 }
5280
5281                 if (qp->wq_sig) {
5282                         sig = (struct mlx5_rwqe_sig *)scat;
5283                         set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
5284                 }
5285
5286                 qp->rq.wrid[ind] = wr->wr_id;
5287
5288                 ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
5289         }
5290
5291 out:
5292         if (likely(nreq)) {
5293                 qp->rq.head += nreq;
5294
5295                 /* Make sure that descriptors are written before
5296                  * doorbell record.
5297                  */
5298                 wmb();
5299
5300                 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
5301         }
5302
5303         spin_unlock_irqrestore(&qp->rq.lock, flags);
5304
5305         return err;
5306 }
5307
5308 int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
5309                       const struct ib_recv_wr **bad_wr)
5310 {
5311         return _mlx5_ib_post_recv(ibqp, wr, bad_wr, false);
5312 }
5313
5314 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
5315 {
5316         switch (mlx5_state) {
5317         case MLX5_QP_STATE_RST:      return IB_QPS_RESET;
5318         case MLX5_QP_STATE_INIT:     return IB_QPS_INIT;
5319         case MLX5_QP_STATE_RTR:      return IB_QPS_RTR;
5320         case MLX5_QP_STATE_RTS:      return IB_QPS_RTS;
5321         case MLX5_QP_STATE_SQ_DRAINING:
5322         case MLX5_QP_STATE_SQD:      return IB_QPS_SQD;
5323         case MLX5_QP_STATE_SQER:     return IB_QPS_SQE;
5324         case MLX5_QP_STATE_ERR:      return IB_QPS_ERR;
5325         default:                     return -1;
5326         }
5327 }
5328
5329 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
5330 {
5331         switch (mlx5_mig_state) {
5332         case MLX5_QP_PM_ARMED:          return IB_MIG_ARMED;
5333         case MLX5_QP_PM_REARM:          return IB_MIG_REARM;
5334         case MLX5_QP_PM_MIGRATED:       return IB_MIG_MIGRATED;
5335         default: return -1;
5336         }
5337 }
5338
5339 static int to_ib_qp_access_flags(int mlx5_flags)
5340 {
5341         int ib_flags = 0;
5342
5343         if (mlx5_flags & MLX5_QP_BIT_RRE)
5344                 ib_flags |= IB_ACCESS_REMOTE_READ;
5345         if (mlx5_flags & MLX5_QP_BIT_RWE)
5346                 ib_flags |= IB_ACCESS_REMOTE_WRITE;
5347         if (mlx5_flags & MLX5_QP_BIT_RAE)
5348                 ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
5349
5350         return ib_flags;
5351 }
5352
5353 static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
5354                             struct rdma_ah_attr *ah_attr,
5355                             struct mlx5_qp_path *path)
5356 {
5357
5358         memset(ah_attr, 0, sizeof(*ah_attr));
5359
5360         if (!path->port || path->port > ibdev->num_ports)
5361                 return;
5362
5363         ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, path->port);
5364
5365         rdma_ah_set_port_num(ah_attr, path->port);
5366         rdma_ah_set_sl(ah_attr, path->dci_cfi_prio_sl & 0xf);
5367
5368         rdma_ah_set_dlid(ah_attr, be16_to_cpu(path->rlid));
5369         rdma_ah_set_path_bits(ah_attr, path->grh_mlid & 0x7f);
5370         rdma_ah_set_static_rate(ah_attr,
5371                                 path->static_rate ? path->static_rate - 5 : 0);
5372         if (path->grh_mlid & (1 << 7)) {
5373                 u32 tc_fl = be32_to_cpu(path->tclass_flowlabel);
5374
5375                 rdma_ah_set_grh(ah_attr, NULL,
5376                                 tc_fl & 0xfffff,
5377                                 path->mgid_index,
5378                                 path->hop_limit,
5379                                 (tc_fl >> 20) & 0xff);
5380                 rdma_ah_set_dgid_raw(ah_attr, path->rgid);
5381         }
5382 }
5383
5384 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
5385                                         struct mlx5_ib_sq *sq,
5386                                         u8 *sq_state)
5387 {
5388         int err;
5389
5390         err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state);
5391         if (err)
5392                 goto out;
5393         sq->state = *sq_state;
5394
5395 out:
5396         return err;
5397 }
5398
5399 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
5400                                         struct mlx5_ib_rq *rq,
5401                                         u8 *rq_state)
5402 {
5403         void *out;
5404         void *rqc;
5405         int inlen;
5406         int err;
5407
5408         inlen = MLX5_ST_SZ_BYTES(query_rq_out);
5409         out = kvzalloc(inlen, GFP_KERNEL);
5410         if (!out)
5411                 return -ENOMEM;
5412
5413         err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
5414         if (err)
5415                 goto out;
5416
5417         rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
5418         *rq_state = MLX5_GET(rqc, rqc, state);
5419         rq->state = *rq_state;
5420
5421 out:
5422         kvfree(out);
5423         return err;
5424 }
5425
5426 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
5427                                   struct mlx5_ib_qp *qp, u8 *qp_state)
5428 {
5429         static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
5430                 [MLX5_RQC_STATE_RST] = {
5431                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
5432                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
5433                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE_BAD,
5434                         [MLX5_SQ_STATE_NA]      = IB_QPS_RESET,
5435                 },
5436                 [MLX5_RQC_STATE_RDY] = {
5437                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
5438                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
5439                         [MLX5_SQC_STATE_ERR]    = IB_QPS_SQE,
5440                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE,
5441                 },
5442                 [MLX5_RQC_STATE_ERR] = {
5443                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
5444                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
5445                         [MLX5_SQC_STATE_ERR]    = IB_QPS_ERR,
5446                         [MLX5_SQ_STATE_NA]      = IB_QPS_ERR,
5447                 },
5448                 [MLX5_RQ_STATE_NA] = {
5449                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
5450                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
5451                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE,
5452                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE_BAD,
5453                 },
5454         };
5455
5456         *qp_state = sqrq_trans[rq_state][sq_state];
5457
5458         if (*qp_state == MLX5_QP_STATE_BAD) {
5459                 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
5460                      qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
5461                      qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
5462                 return -EINVAL;
5463         }
5464
5465         if (*qp_state == MLX5_QP_STATE)
5466                 *qp_state = qp->state;
5467
5468         return 0;
5469 }
5470
5471 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
5472                                      struct mlx5_ib_qp *qp,
5473                                      u8 *raw_packet_qp_state)
5474 {
5475         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
5476         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
5477         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
5478         int err;
5479         u8 sq_state = MLX5_SQ_STATE_NA;
5480         u8 rq_state = MLX5_RQ_STATE_NA;
5481
5482         if (qp->sq.wqe_cnt) {
5483                 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
5484                 if (err)
5485                         return err;
5486         }
5487
5488         if (qp->rq.wqe_cnt) {
5489                 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
5490                 if (err)
5491                         return err;
5492         }
5493
5494         return sqrq_state_to_qp_state(sq_state, rq_state, qp,
5495                                       raw_packet_qp_state);
5496 }
5497
5498 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
5499                          struct ib_qp_attr *qp_attr)
5500 {
5501         int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
5502         struct mlx5_qp_context *context;
5503         int mlx5_state;
5504         u32 *outb;
5505         int err = 0;
5506
5507         outb = kzalloc(outlen, GFP_KERNEL);
5508         if (!outb)
5509                 return -ENOMEM;
5510
5511         err = mlx5_core_qp_query(dev->mdev, &qp->trans_qp.base.mqp, outb,
5512                                  outlen);
5513         if (err)
5514                 goto out;
5515
5516         /* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
5517         context = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, outb, qpc);
5518
5519         mlx5_state = be32_to_cpu(context->flags) >> 28;
5520
5521         qp->state                    = to_ib_qp_state(mlx5_state);
5522         qp_attr->path_mtu            = context->mtu_msgmax >> 5;
5523         qp_attr->path_mig_state      =
5524                 to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
5525         qp_attr->qkey                = be32_to_cpu(context->qkey);
5526         qp_attr->rq_psn              = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
5527         qp_attr->sq_psn              = be32_to_cpu(context->next_send_psn) & 0xffffff;
5528         qp_attr->dest_qp_num         = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
5529         qp_attr->qp_access_flags     =
5530                 to_ib_qp_access_flags(be32_to_cpu(context->params2));
5531
5532         if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
5533                 to_rdma_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
5534                 to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
5535                 qp_attr->alt_pkey_index =
5536                         be16_to_cpu(context->alt_path.pkey_index);
5537                 qp_attr->alt_port_num   =
5538                         rdma_ah_get_port_num(&qp_attr->alt_ah_attr);
5539         }
5540
5541         qp_attr->pkey_index = be16_to_cpu(context->pri_path.pkey_index);
5542         qp_attr->port_num = context->pri_path.port;
5543
5544         /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
5545         qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
5546
5547         qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
5548
5549         qp_attr->max_dest_rd_atomic =
5550                 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
5551         qp_attr->min_rnr_timer      =
5552                 (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
5553         qp_attr->timeout            = context->pri_path.ackto_lt >> 3;
5554         qp_attr->retry_cnt          = (be32_to_cpu(context->params1) >> 16) & 0x7;
5555         qp_attr->rnr_retry          = (be32_to_cpu(context->params1) >> 13) & 0x7;
5556         qp_attr->alt_timeout        = context->alt_path.ackto_lt >> 3;
5557
5558 out:
5559         kfree(outb);
5560         return err;
5561 }
5562
5563 static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp,
5564                                 struct ib_qp_attr *qp_attr, int qp_attr_mask,
5565                                 struct ib_qp_init_attr *qp_init_attr)
5566 {
5567         struct mlx5_core_dct    *dct = &mqp->dct.mdct;
5568         u32 *out;
5569         u32 access_flags = 0;
5570         int outlen = MLX5_ST_SZ_BYTES(query_dct_out);
5571         void *dctc;
5572         int err;
5573         int supported_mask = IB_QP_STATE |
5574                              IB_QP_ACCESS_FLAGS |
5575                              IB_QP_PORT |
5576                              IB_QP_MIN_RNR_TIMER |
5577                              IB_QP_AV |
5578                              IB_QP_PATH_MTU |
5579                              IB_QP_PKEY_INDEX;
5580
5581         if (qp_attr_mask & ~supported_mask)
5582                 return -EINVAL;
5583         if (mqp->state != IB_QPS_RTR)
5584                 return -EINVAL;
5585
5586         out = kzalloc(outlen, GFP_KERNEL);
5587         if (!out)
5588                 return -ENOMEM;
5589
5590         err = mlx5_core_dct_query(dev->mdev, dct, out, outlen);
5591         if (err)
5592                 goto out;
5593
5594         dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry);
5595
5596         if (qp_attr_mask & IB_QP_STATE)
5597                 qp_attr->qp_state = IB_QPS_RTR;
5598
5599         if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
5600                 if (MLX5_GET(dctc, dctc, rre))
5601                         access_flags |= IB_ACCESS_REMOTE_READ;
5602                 if (MLX5_GET(dctc, dctc, rwe))
5603                         access_flags |= IB_ACCESS_REMOTE_WRITE;
5604                 if (MLX5_GET(dctc, dctc, rae))
5605                         access_flags |= IB_ACCESS_REMOTE_ATOMIC;
5606                 qp_attr->qp_access_flags = access_flags;
5607         }
5608
5609         if (qp_attr_mask & IB_QP_PORT)
5610                 qp_attr->port_num = MLX5_GET(dctc, dctc, port);
5611         if (qp_attr_mask & IB_QP_MIN_RNR_TIMER)
5612                 qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak);
5613         if (qp_attr_mask & IB_QP_AV) {
5614                 qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass);
5615                 qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label);
5616                 qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index);
5617                 qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit);
5618         }
5619         if (qp_attr_mask & IB_QP_PATH_MTU)
5620                 qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu);
5621         if (qp_attr_mask & IB_QP_PKEY_INDEX)
5622                 qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index);
5623 out:
5624         kfree(out);
5625         return err;
5626 }
5627
5628 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
5629                      int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
5630 {
5631         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
5632         struct mlx5_ib_qp *qp = to_mqp(ibqp);
5633         int err = 0;
5634         u8 raw_packet_qp_state;
5635
5636         if (ibqp->rwq_ind_tbl)
5637                 return -ENOSYS;
5638
5639         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
5640                 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
5641                                             qp_init_attr);
5642
5643         /* Not all of output fields are applicable, make sure to zero them */
5644         memset(qp_init_attr, 0, sizeof(*qp_init_attr));
5645         memset(qp_attr, 0, sizeof(*qp_attr));
5646
5647         if (unlikely(qp->qp_sub_type == MLX5_IB_QPT_DCT))
5648                 return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
5649                                             qp_attr_mask, qp_init_attr);
5650
5651         mutex_lock(&qp->mutex);
5652
5653         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
5654             qp->flags & MLX5_IB_QP_UNDERLAY) {
5655                 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
5656                 if (err)
5657                         goto out;
5658                 qp->state = raw_packet_qp_state;
5659                 qp_attr->port_num = 1;
5660         } else {
5661                 err = query_qp_attr(dev, qp, qp_attr);
5662                 if (err)
5663                         goto out;
5664         }
5665
5666         qp_attr->qp_state            = qp->state;
5667         qp_attr->cur_qp_state        = qp_attr->qp_state;
5668         qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;
5669         qp_attr->cap.max_recv_sge    = qp->rq.max_gs;
5670
5671         if (!ibqp->uobject) {
5672                 qp_attr->cap.max_send_wr  = qp->sq.max_post;
5673                 qp_attr->cap.max_send_sge = qp->sq.max_gs;
5674                 qp_init_attr->qp_context = ibqp->qp_context;
5675         } else {
5676                 qp_attr->cap.max_send_wr  = 0;
5677                 qp_attr->cap.max_send_sge = 0;
5678         }
5679
5680         qp_init_attr->qp_type = ibqp->qp_type;
5681         qp_init_attr->recv_cq = ibqp->recv_cq;
5682         qp_init_attr->send_cq = ibqp->send_cq;
5683         qp_init_attr->srq = ibqp->srq;
5684         qp_attr->cap.max_inline_data = qp->max_inline_data;
5685
5686         qp_init_attr->cap            = qp_attr->cap;
5687
5688         qp_init_attr->create_flags = 0;
5689         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
5690                 qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
5691
5692         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
5693                 qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
5694         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
5695                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
5696         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
5697                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
5698         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
5699                 qp_init_attr->create_flags |= mlx5_ib_create_qp_sqpn_qp1();
5700
5701         qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
5702                 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
5703
5704 out:
5705         mutex_unlock(&qp->mutex);
5706         return err;
5707 }
5708
5709 struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
5710                                    struct ib_udata *udata)
5711 {
5712         struct mlx5_ib_dev *dev = to_mdev(ibdev);
5713         struct mlx5_ib_xrcd *xrcd;
5714         int err;
5715
5716         if (!MLX5_CAP_GEN(dev->mdev, xrc))
5717                 return ERR_PTR(-ENOSYS);
5718
5719         xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
5720         if (!xrcd)
5721                 return ERR_PTR(-ENOMEM);
5722
5723         err = mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
5724         if (err) {
5725                 kfree(xrcd);
5726                 return ERR_PTR(-ENOMEM);
5727         }
5728
5729         return &xrcd->ibxrcd;
5730 }
5731
5732 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
5733 {
5734         struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
5735         u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
5736         int err;
5737
5738         err = mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
5739         if (err)
5740                 mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
5741
5742         kfree(xrcd);
5743         return 0;
5744 }
5745
5746 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
5747 {
5748         struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
5749         struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
5750         struct ib_event event;
5751
5752         if (rwq->ibwq.event_handler) {
5753                 event.device     = rwq->ibwq.device;
5754                 event.element.wq = &rwq->ibwq;
5755                 switch (type) {
5756                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
5757                         event.event = IB_EVENT_WQ_FATAL;
5758                         break;
5759                 default:
5760                         mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
5761                         return;
5762                 }
5763
5764                 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
5765         }
5766 }
5767
5768 static int set_delay_drop(struct mlx5_ib_dev *dev)
5769 {
5770         int err = 0;
5771
5772         mutex_lock(&dev->delay_drop.lock);
5773         if (dev->delay_drop.activate)
5774                 goto out;
5775
5776         err = mlx5_core_set_delay_drop(dev->mdev, dev->delay_drop.timeout);
5777         if (err)
5778                 goto out;
5779
5780         dev->delay_drop.activate = true;
5781 out:
5782         mutex_unlock(&dev->delay_drop.lock);
5783
5784         if (!err)
5785                 atomic_inc(&dev->delay_drop.rqs_cnt);
5786         return err;
5787 }
5788
5789 static int  create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
5790                       struct ib_wq_init_attr *init_attr)
5791 {
5792         struct mlx5_ib_dev *dev;
5793         int has_net_offloads;
5794         __be64 *rq_pas0;
5795         void *in;
5796         void *rqc;
5797         void *wq;
5798         int inlen;
5799         int err;
5800
5801         dev = to_mdev(pd->device);
5802
5803         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
5804         in = kvzalloc(inlen, GFP_KERNEL);
5805         if (!in)
5806                 return -ENOMEM;
5807
5808         MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
5809         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
5810         MLX5_SET(rqc,  rqc, mem_rq_type,
5811                  MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
5812         MLX5_SET(rqc, rqc, user_index, rwq->user_index);
5813         MLX5_SET(rqc,  rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
5814         MLX5_SET(rqc,  rqc, state, MLX5_RQC_STATE_RST);
5815         MLX5_SET(rqc,  rqc, flush_in_error_en, 1);
5816         wq = MLX5_ADDR_OF(rqc, rqc, wq);
5817         MLX5_SET(wq, wq, wq_type,
5818                  rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ?
5819                  MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC);
5820         if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
5821                 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
5822                         mlx5_ib_dbg(dev, "Scatter end padding is not supported\n");
5823                         err = -EOPNOTSUPP;
5824                         goto out;
5825                 } else {
5826                         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
5827                 }
5828         }
5829         MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
5830         if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) {
5831                 MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en);
5832                 MLX5_SET(wq, wq, log_wqe_stride_size,
5833                          rwq->single_stride_log_num_of_bytes -
5834                          MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES);
5835                 MLX5_SET(wq, wq, log_wqe_num_of_strides, rwq->log_num_strides -
5836                          MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES);
5837         }
5838         MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
5839         MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
5840         MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
5841         MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
5842         MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
5843         MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
5844         has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);
5845         if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {
5846                 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
5847                         mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");
5848                         err = -EOPNOTSUPP;
5849                         goto out;
5850                 }
5851         } else {
5852                 MLX5_SET(rqc, rqc, vsd, 1);
5853         }
5854         if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {
5855                 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {
5856                         mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");
5857                         err = -EOPNOTSUPP;
5858                         goto out;
5859                 }
5860                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
5861         }
5862         if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
5863                 if (!(dev->ib_dev.attrs.raw_packet_caps &
5864                       IB_RAW_PACKET_CAP_DELAY_DROP)) {
5865                         mlx5_ib_dbg(dev, "Delay drop is not supported\n");
5866                         err = -EOPNOTSUPP;
5867                         goto out;
5868                 }
5869                 MLX5_SET(rqc, rqc, delay_drop_en, 1);
5870         }
5871         rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
5872         mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
5873         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);
5874         if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
5875                 err = set_delay_drop(dev);
5876                 if (err) {
5877                         mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
5878                                      err);
5879                         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
5880                 } else {
5881                         rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
5882                 }
5883         }
5884 out:
5885         kvfree(in);
5886         return err;
5887 }
5888
5889 static int set_user_rq_size(struct mlx5_ib_dev *dev,
5890                             struct ib_wq_init_attr *wq_init_attr,
5891                             struct mlx5_ib_create_wq *ucmd,
5892                             struct mlx5_ib_rwq *rwq)
5893 {
5894         /* Sanity check RQ size before proceeding */
5895         if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
5896                 return -EINVAL;
5897
5898         if (!ucmd->rq_wqe_count)
5899                 return -EINVAL;
5900
5901         rwq->wqe_count = ucmd->rq_wqe_count;
5902         rwq->wqe_shift = ucmd->rq_wqe_shift;
5903         if (check_shl_overflow(rwq->wqe_count, rwq->wqe_shift, &rwq->buf_size))
5904                 return -EINVAL;
5905
5906         rwq->log_rq_stride = rwq->wqe_shift;
5907         rwq->log_rq_size = ilog2(rwq->wqe_count);
5908         return 0;
5909 }
5910
5911 static int prepare_user_rq(struct ib_pd *pd,
5912                            struct ib_wq_init_attr *init_attr,
5913                            struct ib_udata *udata,
5914                            struct mlx5_ib_rwq *rwq)
5915 {
5916         struct mlx5_ib_dev *dev = to_mdev(pd->device);
5917         struct mlx5_ib_create_wq ucmd = {};
5918         int err;
5919         size_t required_cmd_sz;
5920
5921         required_cmd_sz = offsetof(typeof(ucmd), single_stride_log_num_of_bytes)
5922                 + sizeof(ucmd.single_stride_log_num_of_bytes);
5923         if (udata->inlen < required_cmd_sz) {
5924                 mlx5_ib_dbg(dev, "invalid inlen\n");
5925                 return -EINVAL;
5926         }
5927
5928         if (udata->inlen > sizeof(ucmd) &&
5929             !ib_is_udata_cleared(udata, sizeof(ucmd),
5930                                  udata->inlen - sizeof(ucmd))) {
5931                 mlx5_ib_dbg(dev, "inlen is not supported\n");
5932                 return -EOPNOTSUPP;
5933         }
5934
5935         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
5936                 mlx5_ib_dbg(dev, "copy failed\n");
5937                 return -EFAULT;
5938         }
5939
5940         if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) {
5941                 mlx5_ib_dbg(dev, "invalid comp mask\n");
5942                 return -EOPNOTSUPP;
5943         } else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) {
5944                 if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) {
5945                         mlx5_ib_dbg(dev, "Striding RQ is not supported\n");
5946                         return -EOPNOTSUPP;
5947                 }
5948                 if ((ucmd.single_stride_log_num_of_bytes <
5949                     MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) ||
5950                     (ucmd.single_stride_log_num_of_bytes >
5951                      MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) {
5952                         mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n",
5953                                     ucmd.single_stride_log_num_of_bytes,
5954                                     MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES,
5955                                     MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES);
5956                         return -EINVAL;
5957                 }
5958                 if ((ucmd.single_wqe_log_num_of_strides >
5959                     MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) ||
5960                      (ucmd.single_wqe_log_num_of_strides <
5961                         MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES)) {
5962                         mlx5_ib_dbg(dev, "Invalid log num strides (%u. Range is %u - %u)\n",
5963                                     ucmd.single_wqe_log_num_of_strides,
5964                                     MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES,
5965                                     MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES);
5966                         return -EINVAL;
5967                 }
5968                 rwq->single_stride_log_num_of_bytes =
5969                         ucmd.single_stride_log_num_of_bytes;
5970                 rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides;
5971                 rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en;
5972                 rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ;
5973         }
5974
5975         err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
5976         if (err) {
5977                 mlx5_ib_dbg(dev, "err %d\n", err);
5978                 return err;
5979         }
5980
5981         err = create_user_rq(dev, pd, udata, rwq, &ucmd);
5982         if (err) {
5983                 mlx5_ib_dbg(dev, "err %d\n", err);
5984                 return err;
5985         }
5986
5987         rwq->user_index = ucmd.user_index;
5988         return 0;
5989 }
5990
5991 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
5992                                 struct ib_wq_init_attr *init_attr,
5993                                 struct ib_udata *udata)
5994 {
5995         struct mlx5_ib_dev *dev;
5996         struct mlx5_ib_rwq *rwq;
5997         struct mlx5_ib_create_wq_resp resp = {};
5998         size_t min_resp_len;
5999         int err;
6000
6001         if (!udata)
6002                 return ERR_PTR(-ENOSYS);
6003
6004         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
6005         if (udata->outlen && udata->outlen < min_resp_len)
6006                 return ERR_PTR(-EINVAL);
6007
6008         dev = to_mdev(pd->device);
6009         switch (init_attr->wq_type) {
6010         case IB_WQT_RQ:
6011                 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
6012                 if (!rwq)
6013                         return ERR_PTR(-ENOMEM);
6014                 err = prepare_user_rq(pd, init_attr, udata, rwq);
6015                 if (err)
6016                         goto err;
6017                 err = create_rq(rwq, pd, init_attr);
6018                 if (err)
6019                         goto err_user_rq;
6020                 break;
6021         default:
6022                 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
6023                             init_attr->wq_type);
6024                 return ERR_PTR(-EINVAL);
6025         }
6026
6027         rwq->ibwq.wq_num = rwq->core_qp.qpn;
6028         rwq->ibwq.state = IB_WQS_RESET;
6029         if (udata->outlen) {
6030                 resp.response_length = offsetof(typeof(resp), response_length) +
6031                                 sizeof(resp.response_length);
6032                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
6033                 if (err)
6034                         goto err_copy;
6035         }
6036
6037         rwq->core_qp.event = mlx5_ib_wq_event;
6038         rwq->ibwq.event_handler = init_attr->event_handler;
6039         return &rwq->ibwq;
6040
6041 err_copy:
6042         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
6043 err_user_rq:
6044         destroy_user_rq(dev, pd, rwq, udata);
6045 err:
6046         kfree(rwq);
6047         return ERR_PTR(err);
6048 }
6049
6050 int mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata)
6051 {
6052         struct mlx5_ib_dev *dev = to_mdev(wq->device);
6053         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
6054
6055         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
6056         destroy_user_rq(dev, wq->pd, rwq, udata);
6057         kfree(rwq);
6058
6059         return 0;
6060 }
6061
6062 struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
6063                                                       struct ib_rwq_ind_table_init_attr *init_attr,
6064                                                       struct ib_udata *udata)
6065 {
6066         struct mlx5_ib_dev *dev = to_mdev(device);
6067         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
6068         int sz = 1 << init_attr->log_ind_tbl_size;
6069         struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
6070         size_t min_resp_len;
6071         int inlen;
6072         int err;
6073         int i;
6074         u32 *in;
6075         void *rqtc;
6076
6077         if (udata->inlen > 0 &&
6078             !ib_is_udata_cleared(udata, 0,
6079                                  udata->inlen))
6080                 return ERR_PTR(-EOPNOTSUPP);
6081
6082         if (init_attr->log_ind_tbl_size >
6083             MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
6084                 mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
6085                             init_attr->log_ind_tbl_size,
6086                             MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
6087                 return ERR_PTR(-EINVAL);
6088         }
6089
6090         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
6091         if (udata->outlen && udata->outlen < min_resp_len)
6092                 return ERR_PTR(-EINVAL);
6093
6094         rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
6095         if (!rwq_ind_tbl)
6096                 return ERR_PTR(-ENOMEM);
6097
6098         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
6099         in = kvzalloc(inlen, GFP_KERNEL);
6100         if (!in) {
6101                 err = -ENOMEM;
6102                 goto err;
6103         }
6104
6105         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
6106
6107         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
6108         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
6109
6110         for (i = 0; i < sz; i++)
6111                 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
6112
6113         rwq_ind_tbl->uid = to_mpd(init_attr->ind_tbl[0]->pd)->uid;
6114         MLX5_SET(create_rqt_in, in, uid, rwq_ind_tbl->uid);
6115
6116         err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
6117         kvfree(in);
6118
6119         if (err)
6120                 goto err;
6121
6122         rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
6123         if (udata->outlen) {
6124                 resp.response_length = offsetof(typeof(resp), response_length) +
6125                                         sizeof(resp.response_length);
6126                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
6127                 if (err)
6128                         goto err_copy;
6129         }
6130
6131         return &rwq_ind_tbl->ib_rwq_ind_tbl;
6132
6133 err_copy:
6134         mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
6135 err:
6136         kfree(rwq_ind_tbl);
6137         return ERR_PTR(err);
6138 }
6139
6140 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
6141 {
6142         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
6143         struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
6144
6145         mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
6146
6147         kfree(rwq_ind_tbl);
6148         return 0;
6149 }
6150
6151 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
6152                       u32 wq_attr_mask, struct ib_udata *udata)
6153 {
6154         struct mlx5_ib_dev *dev = to_mdev(wq->device);
6155         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
6156         struct mlx5_ib_modify_wq ucmd = {};
6157         size_t required_cmd_sz;
6158         int curr_wq_state;
6159         int wq_state;
6160         int inlen;
6161         int err;
6162         void *rqc;
6163         void *in;
6164
6165         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
6166         if (udata->inlen < required_cmd_sz)
6167                 return -EINVAL;
6168
6169         if (udata->inlen > sizeof(ucmd) &&
6170             !ib_is_udata_cleared(udata, sizeof(ucmd),
6171                                  udata->inlen - sizeof(ucmd)))
6172                 return -EOPNOTSUPP;
6173
6174         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
6175                 return -EFAULT;
6176
6177         if (ucmd.comp_mask || ucmd.reserved)
6178                 return -EOPNOTSUPP;
6179
6180         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
6181         in = kvzalloc(inlen, GFP_KERNEL);
6182         if (!in)
6183                 return -ENOMEM;
6184
6185         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
6186
6187         curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
6188                 wq_attr->curr_wq_state : wq->state;
6189         wq_state = (wq_attr_mask & IB_WQ_STATE) ?
6190                 wq_attr->wq_state : curr_wq_state;
6191         if (curr_wq_state == IB_WQS_ERR)
6192                 curr_wq_state = MLX5_RQC_STATE_ERR;
6193         if (wq_state == IB_WQS_ERR)
6194                 wq_state = MLX5_RQC_STATE_ERR;
6195         MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
6196         MLX5_SET(modify_rq_in, in, uid, to_mpd(wq->pd)->uid);
6197         MLX5_SET(rqc, rqc, state, wq_state);
6198
6199         if (wq_attr_mask & IB_WQ_FLAGS) {
6200                 if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) {
6201                         if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
6202                               MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
6203                                 mlx5_ib_dbg(dev, "VLAN offloads are not "
6204                                             "supported\n");
6205                                 err = -EOPNOTSUPP;
6206                                 goto out;
6207                         }
6208                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
6209                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
6210                         MLX5_SET(rqc, rqc, vsd,
6211                                  (wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1);
6212                 }
6213
6214                 if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
6215                         mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n");
6216                         err = -EOPNOTSUPP;
6217                         goto out;
6218                 }
6219         }
6220
6221         if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) {
6222                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
6223                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
6224                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
6225                         MLX5_SET(rqc, rqc, counter_set_id,
6226                                  dev->port->cnts.set_id);
6227                 } else
6228                         dev_info_once(
6229                                 &dev->ib_dev.dev,
6230                                 "Receive WQ counters are not supported on current FW\n");
6231         }
6232
6233         err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in, inlen);
6234         if (!err)
6235                 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
6236
6237 out:
6238         kvfree(in);
6239         return err;
6240 }
6241
6242 struct mlx5_ib_drain_cqe {
6243         struct ib_cqe cqe;
6244         struct completion done;
6245 };
6246
6247 static void mlx5_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc)
6248 {
6249         struct mlx5_ib_drain_cqe *cqe = container_of(wc->wr_cqe,
6250                                                      struct mlx5_ib_drain_cqe,
6251                                                      cqe);
6252
6253         complete(&cqe->done);
6254 }
6255
6256 /* This function returns only once the drained WR was completed */
6257 static void handle_drain_completion(struct ib_cq *cq,
6258                                     struct mlx5_ib_drain_cqe *sdrain,
6259                                     struct mlx5_ib_dev *dev)
6260 {
6261         struct mlx5_core_dev *mdev = dev->mdev;
6262
6263         if (cq->poll_ctx == IB_POLL_DIRECT) {
6264                 while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0)
6265                         ib_process_cq_direct(cq, -1);
6266                 return;
6267         }
6268
6269         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
6270                 struct mlx5_ib_cq *mcq = to_mcq(cq);
6271                 bool triggered = false;
6272                 unsigned long flags;
6273
6274                 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
6275                 /* Make sure that the CQ handler won't run if wasn't run yet */
6276                 if (!mcq->mcq.reset_notify_added)
6277                         mcq->mcq.reset_notify_added = 1;
6278                 else
6279                         triggered = true;
6280                 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
6281
6282                 if (triggered) {
6283                         /* Wait for any scheduled/running task to be ended */
6284                         switch (cq->poll_ctx) {
6285                         case IB_POLL_SOFTIRQ:
6286                                 irq_poll_disable(&cq->iop);
6287                                 irq_poll_enable(&cq->iop);
6288                                 break;
6289                         case IB_POLL_WORKQUEUE:
6290                                 cancel_work_sync(&cq->work);
6291                                 break;
6292                         default:
6293                                 WARN_ON_ONCE(1);
6294                         }
6295                 }
6296
6297                 /* Run the CQ handler - this makes sure that the drain WR will
6298                  * be processed if wasn't processed yet.
6299                  */
6300                 mcq->mcq.comp(&mcq->mcq, NULL);
6301         }
6302
6303         wait_for_completion(&sdrain->done);
6304 }
6305
6306 void mlx5_ib_drain_sq(struct ib_qp *qp)
6307 {
6308         struct ib_cq *cq = qp->send_cq;
6309         struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
6310         struct mlx5_ib_drain_cqe sdrain;
6311         const struct ib_send_wr *bad_swr;
6312         struct ib_rdma_wr swr = {
6313                 .wr = {
6314                         .next = NULL,
6315                         { .wr_cqe       = &sdrain.cqe, },
6316                         .opcode = IB_WR_RDMA_WRITE,
6317                 },
6318         };
6319         int ret;
6320         struct mlx5_ib_dev *dev = to_mdev(qp->device);
6321         struct mlx5_core_dev *mdev = dev->mdev;
6322
6323         ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
6324         if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
6325                 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
6326                 return;
6327         }
6328
6329         sdrain.cqe.done = mlx5_ib_drain_qp_done;
6330         init_completion(&sdrain.done);
6331
6332         ret = _mlx5_ib_post_send(qp, &swr.wr, &bad_swr, true);
6333         if (ret) {
6334                 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
6335                 return;
6336         }
6337
6338         handle_drain_completion(cq, &sdrain, dev);
6339 }
6340
6341 void mlx5_ib_drain_rq(struct ib_qp *qp)
6342 {
6343         struct ib_cq *cq = qp->recv_cq;
6344         struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
6345         struct mlx5_ib_drain_cqe rdrain;
6346         struct ib_recv_wr rwr = {};
6347         const struct ib_recv_wr *bad_rwr;
6348         int ret;
6349         struct mlx5_ib_dev *dev = to_mdev(qp->device);
6350         struct mlx5_core_dev *mdev = dev->mdev;
6351
6352         ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
6353         if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
6354                 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
6355                 return;
6356         }
6357
6358         rwr.wr_cqe = &rdrain.cqe;
6359         rdrain.cqe.done = mlx5_ib_drain_qp_done;
6360         init_completion(&rdrain.done);
6361
6362         ret = _mlx5_ib_post_recv(qp, &rwr, &bad_rwr, true);
6363         if (ret) {
6364                 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
6365                 return;
6366         }
6367
6368         handle_drain_completion(cq, &rdrain, dev);
6369 }