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
  41 /* not supported currently */
  42 static int wq_signature;
  43
  44 enum {
  45         MLX5_IB_ACK_REQ_FREQ    = 8,
  46 };
  47
  48 enum {
  49         MLX5_IB_DEFAULT_SCHED_QUEUE     = 0x83,
  50         MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
  51         MLX5_IB_LINK_TYPE_IB            = 0,
  52         MLX5_IB_LINK_TYPE_ETH           = 1
  53 };
  54
  55 enum {
  56         MLX5_IB_SQ_STRIDE       = 6,
  57         MLX5_IB_SQ_UMR_INLINE_THRESHOLD = 64,
  58 };
  59
  60 static const u32 mlx5_ib_opcode[] = {
  61         [IB_WR_SEND]                            = MLX5_OPCODE_SEND,
  62         [IB_WR_LSO]                             = MLX5_OPCODE_LSO,
  63         [IB_WR_SEND_WITH_IMM]                   = MLX5_OPCODE_SEND_IMM,
  64         [IB_WR_RDMA_WRITE]                      = MLX5_OPCODE_RDMA_WRITE,
  65         [IB_WR_RDMA_WRITE_WITH_IMM]             = MLX5_OPCODE_RDMA_WRITE_IMM,
  66         [IB_WR_RDMA_READ]                       = MLX5_OPCODE_RDMA_READ,
  67         [IB_WR_ATOMIC_CMP_AND_SWP]              = MLX5_OPCODE_ATOMIC_CS,
  68         [IB_WR_ATOMIC_FETCH_AND_ADD]            = MLX5_OPCODE_ATOMIC_FA,
  69         [IB_WR_SEND_WITH_INV]                   = MLX5_OPCODE_SEND_INVAL,
  70         [IB_WR_LOCAL_INV]                       = MLX5_OPCODE_UMR,
  71         [IB_WR_REG_MR]                          = MLX5_OPCODE_UMR,
  72         [IB_WR_MASKED_ATOMIC_CMP_AND_SWP]       = MLX5_OPCODE_ATOMIC_MASKED_CS,
  73         [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD]     = MLX5_OPCODE_ATOMIC_MASKED_FA,
  74         [MLX5_IB_WR_UMR]                        = MLX5_OPCODE_UMR,
  75 };
  76
  77 struct mlx5_wqe_eth_pad {
  78         u8 rsvd0[16];
  79 };
  80
  81 enum raw_qp_set_mask_map {
  82         MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID         = 1UL << 0,
  83         MLX5_RAW_QP_RATE_LIMIT                  = 1UL << 1,
  84 };
  85
  86 struct mlx5_modify_raw_qp_param {
  87         u16 operation;
  88
  89         u32 set_mask; /* raw_qp_set_mask_map */
  90
  91         struct mlx5_rate_limit rl;
  92
  93         u8 rq_q_ctr_id;
  94 };
  95
  96 static void get_cqs(enum ib_qp_type qp_type,
  97                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
  98                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
  99
 100 static int is_qp0(enum ib_qp_type qp_type)
 101 {
 102         return qp_type == IB_QPT_SMI;
 103 }
 104
 105 static int is_sqp(enum ib_qp_type qp_type)
 106 {
 107         return is_qp0(qp_type) || is_qp1(qp_type);
 108 }
 109
 110 static void *get_wqe(struct mlx5_ib_qp *qp, int offset)
 111 {
 112         return mlx5_buf_offset(&qp->buf, offset);
 113 }
 114
 115 static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n)
 116 {
 117         return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
 118 }
 119
 120 void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n)
 121 {
 122         return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE));
 123 }
 124
 125 /**
 126  * mlx5_ib_read_user_wqe() - Copy a user-space WQE to kernel space.
 127  *
 128  * @qp: QP to copy from.
 129  * @send: copy from the send queue when non-zero, use the receive queue
 130  *        otherwise.
 131  * @wqe_index:  index to start copying from. For send work queues, the
 132  *              wqe_index is in units of MLX5_SEND_WQE_BB.
 133  *              For receive work queue, it is the number of work queue
 134  *              element in the queue.
 135  * @buffer: destination buffer.
 136  * @length: maximum number of bytes to copy.
 137  *
 138  * Copies at least a single WQE, but may copy more data.
 139  *
 140  * Return: the number of bytes copied, or an error code.
 141  */
 142 int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
 143                           void *buffer, u32 length,
 144                           struct mlx5_ib_qp_base *base)
 145 {
 146         struct ib_device *ibdev = qp->ibqp.device;
 147         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 148         struct mlx5_ib_wq *wq = send ? &qp->sq : &qp->rq;
 149         size_t offset;
 150         size_t wq_end;
 151         struct ib_umem *umem = base->ubuffer.umem;
 152         u32 first_copy_length;
 153         int wqe_length;
 154         int ret;
 155
 156         if (wq->wqe_cnt == 0) {
 157                 mlx5_ib_dbg(dev, "mlx5_ib_read_user_wqe for a QP with wqe_cnt == 0. qp_type: 0x%x\n",
 158                             qp->ibqp.qp_type);
 159                 return -EINVAL;
 160         }
 161
 162         offset = wq->offset + ((wqe_index % wq->wqe_cnt) << wq->wqe_shift);
 163         wq_end = wq->offset + (wq->wqe_cnt << wq->wqe_shift);
 164
 165         if (send && length < sizeof(struct mlx5_wqe_ctrl_seg))
 166                 return -EINVAL;
 167
 168         if (offset > umem->length ||
 169             (send && offset + sizeof(struct mlx5_wqe_ctrl_seg) > umem->length))
 170                 return -EINVAL;
 171
 172         first_copy_length = min_t(u32, offset + length, wq_end) - offset;
 173         ret = ib_umem_copy_from(buffer, umem, offset, first_copy_length);
 174         if (ret)
 175                 return ret;
 176
 177         if (send) {
 178                 struct mlx5_wqe_ctrl_seg *ctrl = buffer;
 179                 int ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
 180
 181                 wqe_length = ds * MLX5_WQE_DS_UNITS;
 182         } else {
 183                 wqe_length = 1 << wq->wqe_shift;
 184         }
 185
 186         if (wqe_length <= first_copy_length)
 187                 return first_copy_length;
 188
 189         ret = ib_umem_copy_from(buffer + first_copy_length, umem, wq->offset,
 190                                 wqe_length - first_copy_length);
 191         if (ret)
 192                 return ret;
 193
 194         return wqe_length;
 195 }
 196
 197 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
 198 {
 199         struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
 200         struct ib_event event;
 201
 202         if (type == MLX5_EVENT_TYPE_PATH_MIG) {
 203                 /* This event is only valid for trans_qps */
 204                 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
 205         }
 206
 207         if (ibqp->event_handler) {
 208                 event.device     = ibqp->device;
 209                 event.element.qp = ibqp;
 210                 switch (type) {
 211                 case MLX5_EVENT_TYPE_PATH_MIG:
 212                         event.event = IB_EVENT_PATH_MIG;
 213                         break;
 214                 case MLX5_EVENT_TYPE_COMM_EST:
 215                         event.event = IB_EVENT_COMM_EST;
 216                         break;
 217                 case MLX5_EVENT_TYPE_SQ_DRAINED:
 218                         event.event = IB_EVENT_SQ_DRAINED;
 219                         break;
 220                 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
 221                         event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 222                         break;
 223                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
 224                         event.event = IB_EVENT_QP_FATAL;
 225                         break;
 226                 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
 227                         event.event = IB_EVENT_PATH_MIG_ERR;
 228                         break;
 229                 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
 230                         event.event = IB_EVENT_QP_REQ_ERR;
 231                         break;
 232                 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
 233                         event.event = IB_EVENT_QP_ACCESS_ERR;
 234                         break;
 235                 default:
 236                         pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
 237                         return;
 238                 }
 239
 240                 ibqp->event_handler(&event, ibqp->qp_context);
 241         }
 242 }
 243
 244 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
 245                        int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
 246 {
 247         int wqe_size;
 248         int wq_size;
 249
 250         /* Sanity check RQ size before proceeding */
 251         if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
 252                 return -EINVAL;
 253
 254         if (!has_rq) {
 255                 qp->rq.max_gs = 0;
 256                 qp->rq.wqe_cnt = 0;
 257                 qp->rq.wqe_shift = 0;
 258                 cap->max_recv_wr = 0;
 259                 cap->max_recv_sge = 0;
 260         } else {
 261                 if (ucmd) {
 262                         qp->rq.wqe_cnt = ucmd->rq_wqe_count;
 263                         if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift))
 264                                 return -EINVAL;
 265                         qp->rq.wqe_shift = ucmd->rq_wqe_shift;
 266                         if ((1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) < qp->wq_sig)
 267                                 return -EINVAL;
 268                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 269                         qp->rq.max_post = qp->rq.wqe_cnt;
 270                 } else {
 271                         wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
 272                         wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
 273                         wqe_size = roundup_pow_of_two(wqe_size);
 274                         wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
 275                         wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
 276                         qp->rq.wqe_cnt = wq_size / wqe_size;
 277                         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
 278                                 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
 279                                             wqe_size,
 280                                             MLX5_CAP_GEN(dev->mdev,
 281                                                          max_wqe_sz_rq));
 282                                 return -EINVAL;
 283                         }
 284                         qp->rq.wqe_shift = ilog2(wqe_size);
 285                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 286                         qp->rq.max_post = qp->rq.wqe_cnt;
 287                 }
 288         }
 289
 290         return 0;
 291 }
 292
 293 static int sq_overhead(struct ib_qp_init_attr *attr)
 294 {
 295         int size = 0;
 296
 297         switch (attr->qp_type) {
 298         case IB_QPT_XRC_INI:
 299                 size += sizeof(struct mlx5_wqe_xrc_seg);
 300                 /* fall through */
 301         case IB_QPT_RC:
 302                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 303                         max(sizeof(struct mlx5_wqe_atomic_seg) +
 304                             sizeof(struct mlx5_wqe_raddr_seg),
 305                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 306                             sizeof(struct mlx5_mkey_seg) +
 307                             MLX5_IB_SQ_UMR_INLINE_THRESHOLD /
 308                             MLX5_IB_UMR_OCTOWORD);
 309                 break;
 310
 311         case IB_QPT_XRC_TGT:
 312                 return 0;
 313
 314         case IB_QPT_UC:
 315                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 316                         max(sizeof(struct mlx5_wqe_raddr_seg),
 317                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 318                             sizeof(struct mlx5_mkey_seg));
 319                 break;
 320
 321         case IB_QPT_UD:
 322                 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
 323                         size += sizeof(struct mlx5_wqe_eth_pad) +
 324                                 sizeof(struct mlx5_wqe_eth_seg);
 325                 /* fall through */
 326         case IB_QPT_SMI:
 327         case MLX5_IB_QPT_HW_GSI:
 328                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 329                         sizeof(struct mlx5_wqe_datagram_seg);
 330                 break;
 331
 332         case MLX5_IB_QPT_REG_UMR:
 333                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 334                         sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 335                         sizeof(struct mlx5_mkey_seg);
 336                 break;
 337
 338         default:
 339                 return -EINVAL;
 340         }
 341
 342         return size;
 343 }
 344
 345 static int calc_send_wqe(struct ib_qp_init_attr *attr)
 346 {
 347         int inl_size = 0;
 348         int size;
 349
 350         size = sq_overhead(attr);
 351         if (size < 0)
 352                 return size;
 353
 354         if (attr->cap.max_inline_data) {
 355                 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
 356                         attr->cap.max_inline_data;
 357         }
 358
 359         size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
 360         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN &&
 361             ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
 362                         return MLX5_SIG_WQE_SIZE;
 363         else
 364                 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
 365 }
 366
 367 static int get_send_sge(struct ib_qp_init_attr *attr, int wqe_size)
 368 {
 369         int max_sge;
 370
 371         if (attr->qp_type == IB_QPT_RC)
 372                 max_sge = (min_t(int, wqe_size, 512) -
 373                            sizeof(struct mlx5_wqe_ctrl_seg) -
 374                            sizeof(struct mlx5_wqe_raddr_seg)) /
 375                         sizeof(struct mlx5_wqe_data_seg);
 376         else if (attr->qp_type == IB_QPT_XRC_INI)
 377                 max_sge = (min_t(int, wqe_size, 512) -
 378                            sizeof(struct mlx5_wqe_ctrl_seg) -
 379                            sizeof(struct mlx5_wqe_xrc_seg) -
 380                            sizeof(struct mlx5_wqe_raddr_seg)) /
 381                         sizeof(struct mlx5_wqe_data_seg);
 382         else
 383                 max_sge = (wqe_size - sq_overhead(attr)) /
 384                         sizeof(struct mlx5_wqe_data_seg);
 385
 386         return min_t(int, max_sge, wqe_size - sq_overhead(attr) /
 387                      sizeof(struct mlx5_wqe_data_seg));
 388 }
 389
 390 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
 391                         struct mlx5_ib_qp *qp)
 392 {
 393         int wqe_size;
 394         int wq_size;
 395
 396         if (!attr->cap.max_send_wr)
 397                 return 0;
 398
 399         wqe_size = calc_send_wqe(attr);
 400         mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
 401         if (wqe_size < 0)
 402                 return wqe_size;
 403
 404         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 405                 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
 406                             wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 407                 return -EINVAL;
 408         }
 409
 410         qp->max_inline_data = wqe_size - sq_overhead(attr) -
 411                               sizeof(struct mlx5_wqe_inline_seg);
 412         attr->cap.max_inline_data = qp->max_inline_data;
 413
 414         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
 415                 qp->signature_en = true;
 416
 417         wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
 418         qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
 419         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 420                 mlx5_ib_dbg(dev, "send queue size (%d * %d / %d -> %d) exceeds limits(%d)\n",
 421                             attr->cap.max_send_wr, wqe_size, MLX5_SEND_WQE_BB,
 422                             qp->sq.wqe_cnt,
 423                             1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 424                 return -ENOMEM;
 425         }
 426         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 427         qp->sq.max_gs = get_send_sge(attr, wqe_size);
 428         if (qp->sq.max_gs < attr->cap.max_send_sge)
 429                 return -ENOMEM;
 430
 431         attr->cap.max_send_sge = qp->sq.max_gs;
 432         qp->sq.max_post = wq_size / wqe_size;
 433         attr->cap.max_send_wr = qp->sq.max_post;
 434
 435         return wq_size;
 436 }
 437
 438 static int set_user_buf_size(struct mlx5_ib_dev *dev,
 439                             struct mlx5_ib_qp *qp,
 440                             struct mlx5_ib_create_qp *ucmd,
 441                             struct mlx5_ib_qp_base *base,
 442                             struct ib_qp_init_attr *attr)
 443 {
 444         int desc_sz = 1 << qp->sq.wqe_shift;
 445
 446         if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 447                 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
 448                              desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 449                 return -EINVAL;
 450         }
 451
 452         if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
 453                 mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
 454                              ucmd->sq_wqe_count, ucmd->sq_wqe_count);
 455                 return -EINVAL;
 456         }
 457
 458         qp->sq.wqe_cnt = ucmd->sq_wqe_count;
 459
 460         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 461                 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
 462                              qp->sq.wqe_cnt,
 463                              1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 464                 return -EINVAL;
 465         }
 466
 467         if (attr->qp_type == IB_QPT_RAW_PACKET ||
 468             qp->flags & MLX5_IB_QP_UNDERLAY) {
 469                 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 470                 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
 471         } else {
 472                 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
 473                                          (qp->sq.wqe_cnt << 6);
 474         }
 475
 476         return 0;
 477 }
 478
 479 static int qp_has_rq(struct ib_qp_init_attr *attr)
 480 {
 481         if (attr->qp_type == IB_QPT_XRC_INI ||
 482             attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
 483             attr->qp_type == MLX5_IB_QPT_REG_UMR ||
 484             !attr->cap.max_recv_wr)
 485                 return 0;
 486
 487         return 1;
 488 }
 489
 490 enum {
 491         /* this is the first blue flame register in the array of bfregs assigned
 492          * to a processes. Since we do not use it for blue flame but rather
 493          * regular 64 bit doorbells, we do not need a lock for maintaiing
 494          * "odd/even" order
 495          */
 496         NUM_NON_BLUE_FLAME_BFREGS = 1,
 497 };
 498
 499 static int max_bfregs(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi)
 500 {
 501         return get_num_static_uars(dev, bfregi) * MLX5_NON_FP_BFREGS_PER_UAR;
 502 }
 503
 504 static int num_med_bfreg(struct mlx5_ib_dev *dev,
 505                          struct mlx5_bfreg_info *bfregi)
 506 {
 507         int n;
 508
 509         n = max_bfregs(dev, bfregi) - bfregi->num_low_latency_bfregs -
 510             NUM_NON_BLUE_FLAME_BFREGS;
 511
 512         return n >= 0 ? n : 0;
 513 }
 514
 515 static int first_med_bfreg(struct mlx5_ib_dev *dev,
 516                            struct mlx5_bfreg_info *bfregi)
 517 {
 518         return num_med_bfreg(dev, bfregi) ? 1 : -ENOMEM;
 519 }
 520
 521 static int first_hi_bfreg(struct mlx5_ib_dev *dev,
 522                           struct mlx5_bfreg_info *bfregi)
 523 {
 524         int med;
 525
 526         med = num_med_bfreg(dev, bfregi);
 527         return ++med;
 528 }
 529
 530 static int alloc_high_class_bfreg(struct mlx5_ib_dev *dev,
 531                                   struct mlx5_bfreg_info *bfregi)
 532 {
 533         int i;
 534
 535         for (i = first_hi_bfreg(dev, bfregi); i < max_bfregs(dev, bfregi); i++) {
 536                 if (!bfregi->count[i]) {
 537                         bfregi->count[i]++;
 538                         return i;
 539                 }
 540         }
 541
 542         return -ENOMEM;
 543 }
 544
 545 static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev,
 546                                  struct mlx5_bfreg_info *bfregi)
 547 {
 548         int minidx = first_med_bfreg(dev, bfregi);
 549         int i;
 550
 551         if (minidx < 0)
 552                 return minidx;
 553
 554         for (i = minidx; i < first_hi_bfreg(dev, bfregi); i++) {
 555                 if (bfregi->count[i] < bfregi->count[minidx])
 556                         minidx = i;
 557                 if (!bfregi->count[minidx])
 558                         break;
 559         }
 560
 561         bfregi->count[minidx]++;
 562         return minidx;
 563 }
 564
 565 static int alloc_bfreg(struct mlx5_ib_dev *dev,
 566                        struct mlx5_bfreg_info *bfregi,
 567                        enum mlx5_ib_latency_class lat)
 568 {
 569         int bfregn = -EINVAL;
 570
 571         mutex_lock(&bfregi->lock);
 572         switch (lat) {
 573         case MLX5_IB_LATENCY_CLASS_LOW:
 574                 BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1);
 575                 bfregn = 0;
 576                 bfregi->count[bfregn]++;
 577                 break;
 578
 579         case MLX5_IB_LATENCY_CLASS_MEDIUM:
 580                 if (bfregi->ver < 2)
 581                         bfregn = -ENOMEM;
 582                 else
 583                         bfregn = alloc_med_class_bfreg(dev, bfregi);
 584                 break;
 585
 586         case MLX5_IB_LATENCY_CLASS_HIGH:
 587                 if (bfregi->ver < 2)
 588                         bfregn = -ENOMEM;
 589                 else
 590                         bfregn = alloc_high_class_bfreg(dev, bfregi);
 591                 break;
 592         }
 593         mutex_unlock(&bfregi->lock);
 594
 595         return bfregn;
 596 }
 597
 598 void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn)
 599 {
 600         mutex_lock(&bfregi->lock);
 601         bfregi->count[bfregn]--;
 602         mutex_unlock(&bfregi->lock);
 603 }
 604
 605 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
 606 {
 607         switch (state) {
 608         case IB_QPS_RESET:      return MLX5_QP_STATE_RST;
 609         case IB_QPS_INIT:       return MLX5_QP_STATE_INIT;
 610         case IB_QPS_RTR:        return MLX5_QP_STATE_RTR;
 611         case IB_QPS_RTS:        return MLX5_QP_STATE_RTS;
 612         case IB_QPS_SQD:        return MLX5_QP_STATE_SQD;
 613         case IB_QPS_SQE:        return MLX5_QP_STATE_SQER;
 614         case IB_QPS_ERR:        return MLX5_QP_STATE_ERR;
 615         default:                return -1;
 616         }
 617 }
 618
 619 static int to_mlx5_st(enum ib_qp_type type)
 620 {
 621         switch (type) {
 622         case IB_QPT_RC:                 return MLX5_QP_ST_RC;
 623         case IB_QPT_UC:                 return MLX5_QP_ST_UC;
 624         case IB_QPT_UD:                 return MLX5_QP_ST_UD;
 625         case MLX5_IB_QPT_REG_UMR:       return MLX5_QP_ST_REG_UMR;
 626         case IB_QPT_XRC_INI:
 627         case IB_QPT_XRC_TGT:            return MLX5_QP_ST_XRC;
 628         case IB_QPT_SMI:                return MLX5_QP_ST_QP0;
 629         case MLX5_IB_QPT_HW_GSI:        return MLX5_QP_ST_QP1;
 630         case MLX5_IB_QPT_DCI:           return MLX5_QP_ST_DCI;
 631         case IB_QPT_RAW_IPV6:           return MLX5_QP_ST_RAW_IPV6;
 632         case IB_QPT_RAW_PACKET:
 633         case IB_QPT_RAW_ETHERTYPE:      return MLX5_QP_ST_RAW_ETHERTYPE;
 634         case IB_QPT_MAX:
 635         default:                return -EINVAL;
 636         }
 637 }
 638
 639 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
 640                              struct mlx5_ib_cq *recv_cq);
 641 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
 642                                struct mlx5_ib_cq *recv_cq);
 643
 644 static int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
 645                                struct mlx5_bfreg_info *bfregi, int bfregn,
 646                                bool dyn_bfreg)
 647 {
 648         int bfregs_per_sys_page;
 649         int index_of_sys_page;
 650         int offset;
 651
 652         bfregs_per_sys_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k) *
 653                                 MLX5_NON_FP_BFREGS_PER_UAR;
 654         index_of_sys_page = bfregn / bfregs_per_sys_page;
 655
 656         if (dyn_bfreg) {
 657                 index_of_sys_page += bfregi->num_static_sys_pages;
 658                 if (bfregn > bfregi->num_dyn_bfregs ||
 659                     bfregi->sys_pages[index_of_sys_page] == MLX5_IB_INVALID_UAR_INDEX) {
 660                         mlx5_ib_dbg(dev, "Invalid dynamic uar index\n");
 661                         return -EINVAL;
 662                 }
 663         }
 664
 665         offset = bfregn % bfregs_per_sys_page / MLX5_NON_FP_BFREGS_PER_UAR;
 666         return bfregi->sys_pages[index_of_sys_page] + offset;
 667 }
 668
 669 static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev,
 670                             struct ib_pd *pd,
 671                             unsigned long addr, size_t size,
 672                             struct ib_umem **umem,
 673                             int *npages, int *page_shift, int *ncont,
 674                             u32 *offset)
 675 {
 676         int err;
 677
 678         *umem = ib_umem_get(pd->uobject->context, addr, size, 0, 0);
 679         if (IS_ERR(*umem)) {
 680                 mlx5_ib_dbg(dev, "umem_get failed\n");
 681                 return PTR_ERR(*umem);
 682         }
 683
 684         mlx5_ib_cont_pages(*umem, addr, 0, npages, page_shift, ncont, NULL);
 685
 686         err = mlx5_ib_get_buf_offset(addr, *page_shift, offset);
 687         if (err) {
 688                 mlx5_ib_warn(dev, "bad offset\n");
 689                 goto err_umem;
 690         }
 691
 692         mlx5_ib_dbg(dev, "addr 0x%lx, size %zu, npages %d, page_shift %d, ncont %d, offset %d\n",
 693                     addr, size, *npages, *page_shift, *ncont, *offset);
 694
 695         return 0;
 696
 697 err_umem:
 698         ib_umem_release(*umem);
 699         *umem = NULL;
 700
 701         return err;
 702 }
 703
 704 static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 705                             struct mlx5_ib_rwq *rwq)
 706 {
 707         struct mlx5_ib_ucontext *context;
 708
 709         if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP)
 710                 atomic_dec(&dev->delay_drop.rqs_cnt);
 711
 712         context = to_mucontext(pd->uobject->context);
 713         mlx5_ib_db_unmap_user(context, &rwq->db);
 714         if (rwq->umem)
 715                 ib_umem_release(rwq->umem);
 716 }
 717
 718 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 719                           struct mlx5_ib_rwq *rwq,
 720                           struct mlx5_ib_create_wq *ucmd)
 721 {
 722         struct mlx5_ib_ucontext *context;
 723         int page_shift = 0;
 724         int npages;
 725         u32 offset = 0;
 726         int ncont = 0;
 727         int err;
 728
 729         if (!ucmd->buf_addr)
 730                 return -EINVAL;
 731
 732         context = to_mucontext(pd->uobject->context);
 733         rwq->umem = ib_umem_get(pd->uobject->context, ucmd->buf_addr,
 734                                rwq->buf_size, 0, 0);
 735         if (IS_ERR(rwq->umem)) {
 736                 mlx5_ib_dbg(dev, "umem_get failed\n");
 737                 err = PTR_ERR(rwq->umem);
 738                 return err;
 739         }
 740
 741         mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, 0, &npages, &page_shift,
 742                            &ncont, NULL);
 743         err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
 744                                      &rwq->rq_page_offset);
 745         if (err) {
 746                 mlx5_ib_warn(dev, "bad offset\n");
 747                 goto err_umem;
 748         }
 749
 750         rwq->rq_num_pas = ncont;
 751         rwq->page_shift = page_shift;
 752         rwq->log_page_size =  page_shift - MLX5_ADAPTER_PAGE_SHIFT;
 753         rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
 754
 755         mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
 756                     (unsigned long long)ucmd->buf_addr, rwq->buf_size,
 757                     npages, page_shift, ncont, offset);
 758
 759         err = mlx5_ib_db_map_user(context, ucmd->db_addr, &rwq->db);
 760         if (err) {
 761                 mlx5_ib_dbg(dev, "map failed\n");
 762                 goto err_umem;
 763         }
 764
 765         rwq->create_type = MLX5_WQ_USER;
 766         return 0;
 767
 768 err_umem:
 769         ib_umem_release(rwq->umem);
 770         return err;
 771 }
 772
 773 static int adjust_bfregn(struct mlx5_ib_dev *dev,
 774                          struct mlx5_bfreg_info *bfregi, int bfregn)
 775 {
 776         return bfregn / MLX5_NON_FP_BFREGS_PER_UAR * MLX5_BFREGS_PER_UAR +
 777                                 bfregn % MLX5_NON_FP_BFREGS_PER_UAR;
 778 }
 779
 780 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 781                           struct mlx5_ib_qp *qp, struct ib_udata *udata,
 782                           struct ib_qp_init_attr *attr,
 783                           u32 **in,
 784                           struct mlx5_ib_create_qp_resp *resp, int *inlen,
 785                           struct mlx5_ib_qp_base *base)
 786 {
 787         struct mlx5_ib_ucontext *context;
 788         struct mlx5_ib_create_qp ucmd;
 789         struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
 790         int page_shift = 0;
 791         int uar_index = 0;
 792         int npages;
 793         u32 offset = 0;
 794         int bfregn;
 795         int ncont = 0;
 796         __be64 *pas;
 797         void *qpc;
 798         int err;
 799
 800         err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
 801         if (err) {
 802                 mlx5_ib_dbg(dev, "copy failed\n");
 803                 return err;
 804         }
 805
 806         context = to_mucontext(pd->uobject->context);
 807         if (ucmd.flags & MLX5_QP_FLAG_BFREG_INDEX) {
 808                 uar_index = bfregn_to_uar_index(dev, &context->bfregi,
 809                                                 ucmd.bfreg_index, true);
 810                 if (uar_index < 0)
 811                         return uar_index;
 812
 813                 bfregn = MLX5_IB_INVALID_BFREG;
 814         } else if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL) {
 815                 /*
 816                  * TBD: should come from the verbs when we have the API
 817                  */
 818                 /* In CROSS_CHANNEL CQ and QP must use the same UAR */
 819                 bfregn = MLX5_CROSS_CHANNEL_BFREG;
 820         }
 821         else {
 822                 bfregn = alloc_bfreg(dev, &context->bfregi, MLX5_IB_LATENCY_CLASS_HIGH);
 823                 if (bfregn < 0) {
 824                         mlx5_ib_dbg(dev, "failed to allocate low latency BFREG\n");
 825                         mlx5_ib_dbg(dev, "reverting to medium latency\n");
 826                         bfregn = alloc_bfreg(dev, &context->bfregi, MLX5_IB_LATENCY_CLASS_MEDIUM);
 827                         if (bfregn < 0) {
 828                                 mlx5_ib_dbg(dev, "failed to allocate medium latency BFREG\n");
 829                                 mlx5_ib_dbg(dev, "reverting to high latency\n");
 830                                 bfregn = alloc_bfreg(dev, &context->bfregi, MLX5_IB_LATENCY_CLASS_LOW);
 831                                 if (bfregn < 0) {
 832                                         mlx5_ib_warn(dev, "bfreg allocation failed\n");
 833                                         return bfregn;
 834                                 }
 835                         }
 836                 }
 837         }
 838
 839         mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index);
 840         if (bfregn != MLX5_IB_INVALID_BFREG)
 841                 uar_index = bfregn_to_uar_index(dev, &context->bfregi, bfregn,
 842                                                 false);
 843
 844         qp->rq.offset = 0;
 845         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 846         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 847
 848         err = set_user_buf_size(dev, qp, &ucmd, base, attr);
 849         if (err)
 850                 goto err_bfreg;
 851
 852         if (ucmd.buf_addr && ubuffer->buf_size) {
 853                 ubuffer->buf_addr = ucmd.buf_addr;
 854                 err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr,
 855                                        ubuffer->buf_size,
 856                                        &ubuffer->umem, &npages, &page_shift,
 857                                        &ncont, &offset);
 858                 if (err)
 859                         goto err_bfreg;
 860         } else {
 861                 ubuffer->umem = NULL;
 862         }
 863
 864         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
 865                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont;
 866         *in = kvzalloc(*inlen, GFP_KERNEL);
 867         if (!*in) {
 868                 err = -ENOMEM;
 869                 goto err_umem;
 870         }
 871
 872         pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
 873         if (ubuffer->umem)
 874                 mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift, pas, 0);
 875
 876         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
 877
 878         MLX5_SET(qpc, qpc, log_page_size, page_shift - MLX5_ADAPTER_PAGE_SHIFT);
 879         MLX5_SET(qpc, qpc, page_offset, offset);
 880
 881         MLX5_SET(qpc, qpc, uar_page, uar_index);
 882         if (bfregn != MLX5_IB_INVALID_BFREG)
 883                 resp->bfreg_index = adjust_bfregn(dev, &context->bfregi, bfregn);
 884         else
 885                 resp->bfreg_index = MLX5_IB_INVALID_BFREG;
 886         qp->bfregn = bfregn;
 887
 888         err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db);
 889         if (err) {
 890                 mlx5_ib_dbg(dev, "map failed\n");
 891                 goto err_free;
 892         }
 893
 894         err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
 895         if (err) {
 896                 mlx5_ib_dbg(dev, "copy failed\n");
 897                 goto err_unmap;
 898         }
 899         qp->create_type = MLX5_QP_USER;
 900
 901         return 0;
 902
 903 err_unmap:
 904         mlx5_ib_db_unmap_user(context, &qp->db);
 905
 906 err_free:
 907         kvfree(*in);
 908
 909 err_umem:
 910         if (ubuffer->umem)
 911                 ib_umem_release(ubuffer->umem);
 912
 913 err_bfreg:
 914         if (bfregn != MLX5_IB_INVALID_BFREG)
 915                 mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn);
 916         return err;
 917 }
 918
 919 static void destroy_qp_user(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 920                             struct mlx5_ib_qp *qp, struct mlx5_ib_qp_base *base)
 921 {
 922         struct mlx5_ib_ucontext *context;
 923
 924         context = to_mucontext(pd->uobject->context);
 925         mlx5_ib_db_unmap_user(context, &qp->db);
 926         if (base->ubuffer.umem)
 927                 ib_umem_release(base->ubuffer.umem);
 928
 929         /*
 930          * Free only the BFREGs which are handled by the kernel.
 931          * BFREGs of UARs allocated dynamically are handled by user.
 932          */
 933         if (qp->bfregn != MLX5_IB_INVALID_BFREG)
 934                 mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn);
 935 }
 936
 937 static int create_kernel_qp(struct mlx5_ib_dev *dev,
 938                             struct ib_qp_init_attr *init_attr,
 939                             struct mlx5_ib_qp *qp,
 940                             u32 **in, int *inlen,
 941                             struct mlx5_ib_qp_base *base)
 942 {
 943         int uar_index;
 944         void *qpc;
 945         int err;
 946
 947         if (init_attr->create_flags & ~(IB_QP_CREATE_SIGNATURE_EN |
 948                                         IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
 949                                         IB_QP_CREATE_IPOIB_UD_LSO |
 950                                         IB_QP_CREATE_NETIF_QP |
 951                                         mlx5_ib_create_qp_sqpn_qp1()))
 952                 return -EINVAL;
 953
 954         if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
 955                 qp->bf.bfreg = &dev->fp_bfreg;
 956         else
 957                 qp->bf.bfreg = &dev->bfreg;
 958
 959         /* We need to divide by two since each register is comprised of
 960          * two buffers of identical size, namely odd and even
 961          */
 962         qp->bf.buf_size = (1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size)) / 2;
 963         uar_index = qp->bf.bfreg->index;
 964
 965         err = calc_sq_size(dev, init_attr, qp);
 966         if (err < 0) {
 967                 mlx5_ib_dbg(dev, "err %d\n", err);
 968                 return err;
 969         }
 970
 971         qp->rq.offset = 0;
 972         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 973         base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
 974
 975         err = mlx5_buf_alloc(dev->mdev, base->ubuffer.buf_size, &qp->buf);
 976         if (err) {
 977                 mlx5_ib_dbg(dev, "err %d\n", err);
 978                 return err;
 979         }
 980
 981         qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt);
 982         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
 983                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages;
 984         *in = kvzalloc(*inlen, GFP_KERNEL);
 985         if (!*in) {
 986                 err = -ENOMEM;
 987                 goto err_buf;
 988         }
 989
 990         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
 991         MLX5_SET(qpc, qpc, uar_page, uar_index);
 992         MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
 993
 994         /* Set "fast registration enabled" for all kernel QPs */
 995         MLX5_SET(qpc, qpc, fre, 1);
 996         MLX5_SET(qpc, qpc, rlky, 1);
 997
 998         if (init_attr->create_flags & mlx5_ib_create_qp_sqpn_qp1()) {
 999                 MLX5_SET(qpc, qpc, deth_sqpn, 1);
1000                 qp->flags |= MLX5_IB_QP_SQPN_QP1;
1001         }
1002
1003         mlx5_fill_page_array(&qp->buf,
1004                              (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas));
1005
1006         err = mlx5_db_alloc(dev->mdev, &qp->db);
1007         if (err) {
1008                 mlx5_ib_dbg(dev, "err %d\n", err);
1009                 goto err_free;
1010         }
1011
1012         qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
1013                                      sizeof(*qp->sq.wrid), GFP_KERNEL);
1014         qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
1015                                         sizeof(*qp->sq.wr_data), GFP_KERNEL);
1016         qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
1017                                      sizeof(*qp->rq.wrid), GFP_KERNEL);
1018         qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
1019                                        sizeof(*qp->sq.w_list), GFP_KERNEL);
1020         qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
1021                                          sizeof(*qp->sq.wqe_head), GFP_KERNEL);
1022
1023         if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
1024             !qp->sq.w_list || !qp->sq.wqe_head) {
1025                 err = -ENOMEM;
1026                 goto err_wrid;
1027         }
1028         qp->create_type = MLX5_QP_KERNEL;
1029
1030         return 0;
1031
1032 err_wrid:
1033         kvfree(qp->sq.wqe_head);
1034         kvfree(qp->sq.w_list);
1035         kvfree(qp->sq.wrid);
1036         kvfree(qp->sq.wr_data);
1037         kvfree(qp->rq.wrid);
1038         mlx5_db_free(dev->mdev, &qp->db);
1039
1040 err_free:
1041         kvfree(*in);
1042
1043 err_buf:
1044         mlx5_buf_free(dev->mdev, &qp->buf);
1045         return err;
1046 }
1047
1048 static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1049 {
1050         kvfree(qp->sq.wqe_head);
1051         kvfree(qp->sq.w_list);
1052         kvfree(qp->sq.wrid);
1053         kvfree(qp->sq.wr_data);
1054         kvfree(qp->rq.wrid);
1055         mlx5_db_free(dev->mdev, &qp->db);
1056         mlx5_buf_free(dev->mdev, &qp->buf);
1057 }
1058
1059 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
1060 {
1061         if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
1062             (attr->qp_type == MLX5_IB_QPT_DCI) ||
1063             (attr->qp_type == IB_QPT_XRC_INI))
1064                 return MLX5_SRQ_RQ;
1065         else if (!qp->has_rq)
1066                 return MLX5_ZERO_LEN_RQ;
1067         else
1068                 return MLX5_NON_ZERO_RQ;
1069 }
1070
1071 static int is_connected(enum ib_qp_type qp_type)
1072 {
1073         if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC)
1074                 return 1;
1075
1076         return 0;
1077 }
1078
1079 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1080                                     struct mlx5_ib_qp *qp,
1081                                     struct mlx5_ib_sq *sq, u32 tdn)
1082 {
1083         u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
1084         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1085
1086         MLX5_SET(tisc, tisc, transport_domain, tdn);
1087         if (qp->flags & MLX5_IB_QP_UNDERLAY)
1088                 MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
1089
1090         return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
1091 }
1092
1093 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1094                                       struct mlx5_ib_sq *sq)
1095 {
1096         mlx5_core_destroy_tis(dev->mdev, sq->tisn);
1097 }
1098
1099 static void destroy_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
1100                                        struct mlx5_ib_sq *sq)
1101 {
1102         if (sq->flow_rule)
1103                 mlx5_del_flow_rules(sq->flow_rule);
1104 }
1105
1106 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1107                                    struct mlx5_ib_sq *sq, void *qpin,
1108                                    struct ib_pd *pd)
1109 {
1110         struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1111         __be64 *pas;
1112         void *in;
1113         void *sqc;
1114         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1115         void *wq;
1116         int inlen;
1117         int err;
1118         int page_shift = 0;
1119         int npages;
1120         int ncont = 0;
1121         u32 offset = 0;
1122
1123         err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr, ubuffer->buf_size,
1124                                &sq->ubuffer.umem, &npages, &page_shift,
1125                                &ncont, &offset);
1126         if (err)
1127                 return err;
1128
1129         inlen = MLX5_ST_SZ_BYTES(create_sq_in) + sizeof(u64) * ncont;
1130         in = kvzalloc(inlen, GFP_KERNEL);
1131         if (!in) {
1132                 err = -ENOMEM;
1133                 goto err_umem;
1134         }
1135
1136         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1137         MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1138         if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
1139                 MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
1140         MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1141         MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1142         MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1143         MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1144         MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1145         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
1146             MLX5_CAP_ETH(dev->mdev, swp))
1147                 MLX5_SET(sqc, sqc, allow_swp, 1);
1148
1149         wq = MLX5_ADDR_OF(sqc, sqc, wq);
1150         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1151         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1152         MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1153         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1154         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1155         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1156         MLX5_SET(wq, wq, log_wq_pg_sz,  page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1157         MLX5_SET(wq, wq, page_offset, offset);
1158
1159         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1160         mlx5_ib_populate_pas(dev, sq->ubuffer.umem, page_shift, pas, 0);
1161
1162         err = mlx5_core_create_sq_tracked(dev->mdev, in, inlen, &sq->base.mqp);
1163
1164         kvfree(in);
1165
1166         if (err)
1167                 goto err_umem;
1168
1169         err = create_flow_rule_vport_sq(dev, sq);
1170         if (err)
1171                 goto err_flow;
1172
1173         return 0;
1174
1175 err_flow:
1176         mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
1177
1178 err_umem:
1179         ib_umem_release(sq->ubuffer.umem);
1180         sq->ubuffer.umem = NULL;
1181
1182         return err;
1183 }
1184
1185 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1186                                      struct mlx5_ib_sq *sq)
1187 {
1188         destroy_flow_rule_vport_sq(dev, sq);
1189         mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
1190         ib_umem_release(sq->ubuffer.umem);
1191 }
1192
1193 static size_t get_rq_pas_size(void *qpc)
1194 {
1195         u32 log_page_size = MLX5_GET(qpc, qpc, log_page_size) + 12;
1196         u32 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride);
1197         u32 log_rq_size   = MLX5_GET(qpc, qpc, log_rq_size);
1198         u32 page_offset   = MLX5_GET(qpc, qpc, page_offset);
1199         u32 po_quanta     = 1 << (log_page_size - 6);
1200         u32 rq_sz         = 1 << (log_rq_size + 4 + log_rq_stride);
1201         u32 page_size     = 1 << log_page_size;
1202         u32 rq_sz_po      = rq_sz + (page_offset * po_quanta);
1203         u32 rq_num_pas    = (rq_sz_po + page_size - 1) / page_size;
1204
1205         return rq_num_pas * sizeof(u64);
1206 }
1207
1208 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1209                                    struct mlx5_ib_rq *rq, void *qpin,
1210                                    size_t qpinlen)
1211 {
1212         struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1213         __be64 *pas;
1214         __be64 *qp_pas;
1215         void *in;
1216         void *rqc;
1217         void *wq;
1218         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1219         size_t rq_pas_size = get_rq_pas_size(qpc);
1220         size_t inlen;
1221         int err;
1222
1223         if (qpinlen < rq_pas_size + MLX5_BYTE_OFF(create_qp_in, pas))
1224                 return -EINVAL;
1225
1226         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
1227         in = kvzalloc(inlen, GFP_KERNEL);
1228         if (!in)
1229                 return -ENOMEM;
1230
1231         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1232         if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING))
1233                 MLX5_SET(rqc, rqc, vsd, 1);
1234         MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1235         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1236         MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1237         MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1238         MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1239
1240         if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)
1241                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1242
1243         wq = MLX5_ADDR_OF(rqc, rqc, wq);
1244         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1245         if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING)
1246                 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1247         MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
1248         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1249         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1250         MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1251         MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(qpc, qpc, log_page_size));
1252         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1253
1254         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1255         qp_pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, qpin, pas);
1256         memcpy(pas, qp_pas, rq_pas_size);
1257
1258         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rq->base.mqp);
1259
1260         kvfree(in);
1261
1262         return err;
1263 }
1264
1265 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1266                                      struct mlx5_ib_rq *rq)
1267 {
1268         mlx5_core_destroy_rq_tracked(dev->mdev, &rq->base.mqp);
1269 }
1270
1271 static bool tunnel_offload_supported(struct mlx5_core_dev *dev)
1272 {
1273         return  (MLX5_CAP_ETH(dev, tunnel_stateless_vxlan) ||
1274                  MLX5_CAP_ETH(dev, tunnel_stateless_gre) ||
1275                  MLX5_CAP_ETH(dev, tunnel_stateless_geneve_rx));
1276 }
1277
1278 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1279                                     struct mlx5_ib_rq *rq, u32 tdn,
1280                                     bool tunnel_offload_en)
1281 {
1282         u32 *in;
1283         void *tirc;
1284         int inlen;
1285         int err;
1286
1287         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1288         in = kvzalloc(inlen, GFP_KERNEL);
1289         if (!in)
1290                 return -ENOMEM;
1291
1292         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1293         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1294         MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1295         MLX5_SET(tirc, tirc, transport_domain, tdn);
1296         if (tunnel_offload_en)
1297                 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1298
1299         if (dev->rep)
1300                 MLX5_SET(tirc, tirc, self_lb_block,
1301                          MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST_);
1302
1303         err = mlx5_core_create_tir(dev->mdev, in, inlen, &rq->tirn);
1304
1305         kvfree(in);
1306
1307         return err;
1308 }
1309
1310 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1311                                       struct mlx5_ib_rq *rq)
1312 {
1313         mlx5_core_destroy_tir(dev->mdev, rq->tirn);
1314 }
1315
1316 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1317                                 u32 *in, size_t inlen,
1318                                 struct ib_pd *pd)
1319 {
1320         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1321         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1322         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1323         struct ib_uobject *uobj = pd->uobject;
1324         struct ib_ucontext *ucontext = uobj->context;
1325         struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
1326         int err;
1327         u32 tdn = mucontext->tdn;
1328
1329         if (qp->sq.wqe_cnt) {
1330                 err = create_raw_packet_qp_tis(dev, qp, sq, tdn);
1331                 if (err)
1332                         return err;
1333
1334                 err = create_raw_packet_qp_sq(dev, sq, in, pd);
1335                 if (err)
1336                         goto err_destroy_tis;
1337
1338                 sq->base.container_mibqp = qp;
1339                 sq->base.mqp.event = mlx5_ib_qp_event;
1340         }
1341
1342         if (qp->rq.wqe_cnt) {
1343                 rq->base.container_mibqp = qp;
1344
1345                 if (qp->flags & MLX5_IB_QP_CVLAN_STRIPPING)
1346                         rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING;
1347                 if (qp->flags & MLX5_IB_QP_PCI_WRITE_END_PADDING)
1348                         rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING;
1349                 err = create_raw_packet_qp_rq(dev, rq, in, inlen);
1350                 if (err)
1351                         goto err_destroy_sq;
1352
1353
1354                 err = create_raw_packet_qp_tir(dev, rq, tdn,
1355                                                qp->tunnel_offload_en);
1356                 if (err)
1357                         goto err_destroy_rq;
1358         }
1359
1360         qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1361                                                      rq->base.mqp.qpn;
1362
1363         return 0;
1364
1365 err_destroy_rq:
1366         destroy_raw_packet_qp_rq(dev, rq);
1367 err_destroy_sq:
1368         if (!qp->sq.wqe_cnt)
1369                 return err;
1370         destroy_raw_packet_qp_sq(dev, sq);
1371 err_destroy_tis:
1372         destroy_raw_packet_qp_tis(dev, sq);
1373
1374         return err;
1375 }
1376
1377 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1378                                   struct mlx5_ib_qp *qp)
1379 {
1380         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1381         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1382         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1383
1384         if (qp->rq.wqe_cnt) {
1385                 destroy_raw_packet_qp_tir(dev, rq);
1386                 destroy_raw_packet_qp_rq(dev, rq);
1387         }
1388
1389         if (qp->sq.wqe_cnt) {
1390                 destroy_raw_packet_qp_sq(dev, sq);
1391                 destroy_raw_packet_qp_tis(dev, sq);
1392         }
1393 }
1394
1395 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1396                                     struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1397 {
1398         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1399         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1400
1401         sq->sq = &qp->sq;
1402         rq->rq = &qp->rq;
1403         sq->doorbell = &qp->db;
1404         rq->doorbell = &qp->db;
1405 }
1406
1407 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1408 {
1409         mlx5_core_destroy_tir(dev->mdev, qp->rss_qp.tirn);
1410 }
1411
1412 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1413                                  struct ib_pd *pd,
1414                                  struct ib_qp_init_attr *init_attr,
1415                                  struct ib_udata *udata)
1416 {
1417         struct ib_uobject *uobj = pd->uobject;
1418         struct ib_ucontext *ucontext = uobj->context;
1419         struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
1420         struct mlx5_ib_create_qp_resp resp = {};
1421         int inlen;
1422         int err;
1423         u32 *in;
1424         void *tirc;
1425         void *hfso;
1426         u32 selected_fields = 0;
1427         u32 outer_l4;
1428         size_t min_resp_len;
1429         u32 tdn = mucontext->tdn;
1430         struct mlx5_ib_create_qp_rss ucmd = {};
1431         size_t required_cmd_sz;
1432
1433         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1434                 return -EOPNOTSUPP;
1435
1436         if (init_attr->create_flags || init_attr->send_cq)
1437                 return -EINVAL;
1438
1439         min_resp_len = offsetof(typeof(resp), bfreg_index) + sizeof(resp.bfreg_index);
1440         if (udata->outlen < min_resp_len)
1441                 return -EINVAL;
1442
1443         required_cmd_sz = offsetof(typeof(ucmd), flags) + sizeof(ucmd.flags);
1444         if (udata->inlen < required_cmd_sz) {
1445                 mlx5_ib_dbg(dev, "invalid inlen\n");
1446                 return -EINVAL;
1447         }
1448
1449         if (udata->inlen > sizeof(ucmd) &&
1450             !ib_is_udata_cleared(udata, sizeof(ucmd),
1451                                  udata->inlen - sizeof(ucmd))) {
1452                 mlx5_ib_dbg(dev, "inlen is not supported\n");
1453                 return -EOPNOTSUPP;
1454         }
1455
1456         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
1457                 mlx5_ib_dbg(dev, "copy failed\n");
1458                 return -EFAULT;
1459         }
1460
1461         if (ucmd.comp_mask) {
1462                 mlx5_ib_dbg(dev, "invalid comp mask\n");
1463                 return -EOPNOTSUPP;
1464         }
1465
1466         if (ucmd.flags & ~MLX5_QP_FLAG_TUNNEL_OFFLOADS) {
1467                 mlx5_ib_dbg(dev, "invalid flags\n");
1468                 return -EOPNOTSUPP;
1469         }
1470
1471         if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS &&
1472             !tunnel_offload_supported(dev->mdev)) {
1473                 mlx5_ib_dbg(dev, "tunnel offloads isn't supported\n");
1474                 return -EOPNOTSUPP;
1475         }
1476
1477         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
1478             !(ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
1479                 mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
1480                 return -EOPNOTSUPP;
1481         }
1482
1483         err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
1484         if (err) {
1485                 mlx5_ib_dbg(dev, "copy failed\n");
1486                 return -EINVAL;
1487         }
1488
1489         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1490         in = kvzalloc(inlen, GFP_KERNEL);
1491         if (!in)
1492                 return -ENOMEM;
1493
1494         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1495         MLX5_SET(tirc, tirc, disp_type,
1496                  MLX5_TIRC_DISP_TYPE_INDIRECT);
1497         MLX5_SET(tirc, tirc, indirect_table,
1498                  init_attr->rwq_ind_tbl->ind_tbl_num);
1499         MLX5_SET(tirc, tirc, transport_domain, tdn);
1500
1501         hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1502
1503         if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1504                 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1505
1506         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER)
1507                 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
1508         else
1509                 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1510
1511         switch (ucmd.rx_hash_function) {
1512         case MLX5_RX_HASH_FUNC_TOEPLITZ:
1513         {
1514                 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1515                 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1516
1517                 if (len != ucmd.rx_key_len) {
1518                         err = -EINVAL;
1519                         goto err;
1520                 }
1521
1522                 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1523                 MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
1524                 memcpy(rss_key, ucmd.rx_hash_key, len);
1525                 break;
1526         }
1527         default:
1528                 err = -EOPNOTSUPP;
1529                 goto err;
1530         }
1531
1532         if (!ucmd.rx_hash_fields_mask) {
1533                 /* special case when this TIR serves as steering entry without hashing */
1534                 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1535                         goto create_tir;
1536                 err = -EINVAL;
1537                 goto err;
1538         }
1539
1540         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1541              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1542              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1543              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1544                 err = -EINVAL;
1545                 goto err;
1546         }
1547
1548         /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1549         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1550             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1551                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1552                          MLX5_L3_PROT_TYPE_IPV4);
1553         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1554                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1555                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1556                          MLX5_L3_PROT_TYPE_IPV6);
1557
1558         outer_l4 = ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1559                     (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) << 0 |
1560                    ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1561                     (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) << 1 |
1562                    (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2;
1563
1564         /* Check that only one l4 protocol is set */
1565         if (outer_l4 & (outer_l4 - 1)) {
1566                 err = -EINVAL;
1567                 goto err;
1568         }
1569
1570         /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1571         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1572             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1573                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1574                          MLX5_L4_PROT_TYPE_TCP);
1575         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1576                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1577                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1578                          MLX5_L4_PROT_TYPE_UDP);
1579
1580         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1581             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1582                 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1583
1584         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1585             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1586                 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1587
1588         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1589             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1590                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1591
1592         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1593             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1594                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1595
1596         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI)
1597                 selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI;
1598
1599         MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1600
1601 create_tir:
1602         if (dev->rep)
1603                 MLX5_SET(tirc, tirc, self_lb_block,
1604                          MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST_);
1605
1606         err = mlx5_core_create_tir(dev->mdev, in, inlen, &qp->rss_qp.tirn);
1607
1608         if (err)
1609                 goto err;
1610
1611         kvfree(in);
1612         /* qpn is reserved for that QP */
1613         qp->trans_qp.base.mqp.qpn = 0;
1614         qp->flags |= MLX5_IB_QP_RSS;
1615         return 0;
1616
1617 err:
1618         kvfree(in);
1619         return err;
1620 }
1621
1622 static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1623                             struct ib_qp_init_attr *init_attr,
1624                             struct ib_udata *udata, struct mlx5_ib_qp *qp)
1625 {
1626         struct mlx5_ib_resources *devr = &dev->devr;
1627         int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1628         struct mlx5_core_dev *mdev = dev->mdev;
1629         struct mlx5_ib_create_qp_resp resp;
1630         struct mlx5_ib_cq *send_cq;
1631         struct mlx5_ib_cq *recv_cq;
1632         unsigned long flags;
1633         u32 uidx = MLX5_IB_DEFAULT_UIDX;
1634         struct mlx5_ib_create_qp ucmd;
1635         struct mlx5_ib_qp_base *base;
1636         int mlx5_st;
1637         void *qpc;
1638         u32 *in;
1639         int err;
1640
1641         mutex_init(&qp->mutex);
1642         spin_lock_init(&qp->sq.lock);
1643         spin_lock_init(&qp->rq.lock);
1644
1645         mlx5_st = to_mlx5_st(init_attr->qp_type);
1646         if (mlx5_st < 0)
1647                 return -EINVAL;
1648
1649         if (init_attr->rwq_ind_tbl) {
1650                 if (!udata)
1651                         return -ENOSYS;
1652
1653                 err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
1654                 return err;
1655         }
1656
1657         if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
1658                 if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
1659                         mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
1660                         return -EINVAL;
1661                 } else {
1662                         qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
1663                 }
1664         }
1665
1666         if (init_attr->create_flags &
1667                         (IB_QP_CREATE_CROSS_CHANNEL |
1668                          IB_QP_CREATE_MANAGED_SEND |
1669                          IB_QP_CREATE_MANAGED_RECV)) {
1670                 if (!MLX5_CAP_GEN(mdev, cd)) {
1671                         mlx5_ib_dbg(dev, "cross-channel isn't supported\n");
1672                         return -EINVAL;
1673                 }
1674                 if (init_attr->create_flags & IB_QP_CREATE_CROSS_CHANNEL)
1675                         qp->flags |= MLX5_IB_QP_CROSS_CHANNEL;
1676                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_SEND)
1677                         qp->flags |= MLX5_IB_QP_MANAGED_SEND;
1678                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_RECV)
1679                         qp->flags |= MLX5_IB_QP_MANAGED_RECV;
1680         }
1681
1682         if (init_attr->qp_type == IB_QPT_UD &&
1683             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO))
1684                 if (!MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
1685                         mlx5_ib_dbg(dev, "ipoib UD lso qp isn't supported\n");
1686                         return -EOPNOTSUPP;
1687                 }
1688
1689         if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {
1690                 if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
1691                         mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");
1692                         return -EOPNOTSUPP;
1693                 }
1694                 if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||
1695                     !MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
1696                         mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");
1697                         return -EOPNOTSUPP;
1698                 }
1699                 qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;
1700         }
1701
1702         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
1703                 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
1704
1705         if (init_attr->create_flags & IB_QP_CREATE_CVLAN_STRIPPING) {
1706                 if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
1707                       MLX5_CAP_ETH(dev->mdev, vlan_cap)) ||
1708                     (init_attr->qp_type != IB_QPT_RAW_PACKET))
1709                         return -EOPNOTSUPP;
1710                 qp->flags |= MLX5_IB_QP_CVLAN_STRIPPING;
1711         }
1712
1713         if (pd && pd->uobject) {
1714                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
1715                         mlx5_ib_dbg(dev, "copy failed\n");
1716                         return -EFAULT;
1717                 }
1718
1719                 err = get_qp_user_index(to_mucontext(pd->uobject->context),
1720                                         &ucmd, udata->inlen, &uidx);
1721                 if (err)
1722                         return err;
1723
1724                 qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
1725                 qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
1726                 if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS) {
1727                         if (init_attr->qp_type != IB_QPT_RAW_PACKET ||
1728                             !tunnel_offload_supported(mdev)) {
1729                                 mlx5_ib_dbg(dev, "Tunnel offload isn't supported\n");
1730                                 return -EOPNOTSUPP;
1731                         }
1732                         qp->tunnel_offload_en = true;
1733                 }
1734
1735                 if (init_attr->create_flags & IB_QP_CREATE_SOURCE_QPN) {
1736                         if (init_attr->qp_type != IB_QPT_UD ||
1737                             (MLX5_CAP_GEN(dev->mdev, port_type) !=
1738                              MLX5_CAP_PORT_TYPE_IB) ||
1739                             !mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) {
1740                                 mlx5_ib_dbg(dev, "Source QP option isn't supported\n");
1741                                 return -EOPNOTSUPP;
1742                         }
1743
1744                         qp->flags |= MLX5_IB_QP_UNDERLAY;
1745                         qp->underlay_qpn = init_attr->source_qpn;
1746                 }
1747         } else {
1748                 qp->wq_sig = !!wq_signature;
1749         }
1750
1751         base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
1752                 qp->flags & MLX5_IB_QP_UNDERLAY) ?
1753                &qp->raw_packet_qp.rq.base :
1754                &qp->trans_qp.base;
1755
1756         qp->has_rq = qp_has_rq(init_attr);
1757         err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
1758                           qp, (pd && pd->uobject) ? &ucmd : NULL);
1759         if (err) {
1760                 mlx5_ib_dbg(dev, "err %d\n", err);
1761                 return err;
1762         }
1763
1764         if (pd) {
1765                 if (pd->uobject) {
1766                         __u32 max_wqes =
1767                                 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
1768                         mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
1769                         if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
1770                             ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
1771                                 mlx5_ib_dbg(dev, "invalid rq params\n");
1772                                 return -EINVAL;
1773                         }
1774                         if (ucmd.sq_wqe_count > max_wqes) {
1775                                 mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
1776                                             ucmd.sq_wqe_count, max_wqes);
1777                                 return -EINVAL;
1778                         }
1779                         if (init_attr->create_flags &
1780                             mlx5_ib_create_qp_sqpn_qp1()) {
1781                                 mlx5_ib_dbg(dev, "user-space is not allowed to create UD QPs spoofing as QP1\n");
1782                                 return -EINVAL;
1783                         }
1784                         err = create_user_qp(dev, pd, qp, udata, init_attr, &in,
1785                                              &resp, &inlen, base);
1786                         if (err)
1787                                 mlx5_ib_dbg(dev, "err %d\n", err);
1788                 } else {
1789                         err = create_kernel_qp(dev, init_attr, qp, &in, &inlen,
1790                                                base);
1791                         if (err)
1792                                 mlx5_ib_dbg(dev, "err %d\n", err);
1793                 }
1794
1795                 if (err)
1796                         return err;
1797         } else {
1798                 in = kvzalloc(inlen, GFP_KERNEL);
1799                 if (!in)
1800                         return -ENOMEM;
1801
1802                 qp->create_type = MLX5_QP_EMPTY;
1803         }
1804
1805         if (is_sqp(init_attr->qp_type))
1806                 qp->port = init_attr->port_num;
1807
1808         qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1809
1810         MLX5_SET(qpc, qpc, st, mlx5_st);
1811         MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
1812
1813         if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
1814                 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
1815         else
1816                 MLX5_SET(qpc, qpc, latency_sensitive, 1);
1817
1818
1819         if (qp->wq_sig)
1820                 MLX5_SET(qpc, qpc, wq_signature, 1);
1821
1822         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
1823                 MLX5_SET(qpc, qpc, block_lb_mc, 1);
1824
1825         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
1826                 MLX5_SET(qpc, qpc, cd_master, 1);
1827         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
1828                 MLX5_SET(qpc, qpc, cd_slave_send, 1);
1829         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
1830                 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
1831
1832         if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
1833                 int rcqe_sz;
1834                 int scqe_sz;
1835
1836                 rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq);
1837                 scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq);
1838
1839                 if (rcqe_sz == 128)
1840                         MLX5_SET(qpc, qpc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
1841                 else
1842                         MLX5_SET(qpc, qpc, cs_res, MLX5_RES_SCAT_DATA32_CQE);
1843
1844                 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) {
1845                         if (scqe_sz == 128)
1846                                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
1847                         else
1848                                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
1849                 }
1850         }
1851
1852         if (qp->rq.wqe_cnt) {
1853                 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
1854                 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
1855         }
1856
1857         MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
1858
1859         if (qp->sq.wqe_cnt) {
1860                 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
1861         } else {
1862                 MLX5_SET(qpc, qpc, no_sq, 1);
1863                 if (init_attr->srq &&
1864                     init_attr->srq->srq_type == IB_SRQT_TM)
1865                         MLX5_SET(qpc, qpc, offload_type,
1866                                  MLX5_QPC_OFFLOAD_TYPE_RNDV);
1867         }
1868
1869         /* Set default resources */
1870         switch (init_attr->qp_type) {
1871         case IB_QPT_XRC_TGT:
1872                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
1873                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
1874                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
1875                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(init_attr->xrcd)->xrcdn);
1876                 break;
1877         case IB_QPT_XRC_INI:
1878                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
1879                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
1880                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
1881                 break;
1882         default:
1883                 if (init_attr->srq) {
1884                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x0)->xrcdn);
1885                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
1886                 } else {
1887                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
1888                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
1889                 }
1890         }
1891
1892         if (init_attr->send_cq)
1893                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
1894
1895         if (init_attr->recv_cq)
1896                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
1897
1898         MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
1899
1900         /* 0xffffff means we ask to work with cqe version 0 */
1901         if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
1902                 MLX5_SET(qpc, qpc, user_index, uidx);
1903
1904         /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
1905         if (init_attr->qp_type == IB_QPT_UD &&
1906             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)) {
1907                 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
1908                 qp->flags |= MLX5_IB_QP_LSO;
1909         }
1910
1911         if (init_attr->create_flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) {
1912                 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
1913                         mlx5_ib_dbg(dev, "scatter end padding is not supported\n");
1914                         err = -EOPNOTSUPP;
1915                         goto err;
1916                 } else if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
1917                         MLX5_SET(qpc, qpc, end_padding_mode,
1918                                  MLX5_WQ_END_PAD_MODE_ALIGN);
1919                 } else {
1920                         qp->flags |= MLX5_IB_QP_PCI_WRITE_END_PADDING;
1921                 }
1922         }
1923
1924         if (inlen < 0) {
1925                 err = -EINVAL;
1926                 goto err;
1927         }
1928
1929         if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
1930             qp->flags & MLX5_IB_QP_UNDERLAY) {
1931                 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
1932                 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
1933                 err = create_raw_packet_qp(dev, qp, in, inlen, pd);
1934         } else {
1935                 err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen);
1936         }
1937
1938         if (err) {
1939                 mlx5_ib_dbg(dev, "create qp failed\n");
1940                 goto err_create;
1941         }
1942
1943         kvfree(in);
1944
1945         base->container_mibqp = qp;
1946         base->mqp.event = mlx5_ib_qp_event;
1947
1948         get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
1949                 &send_cq, &recv_cq);
1950         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1951         mlx5_ib_lock_cqs(send_cq, recv_cq);
1952         /* Maintain device to QPs access, needed for further handling via reset
1953          * flow
1954          */
1955         list_add_tail(&qp->qps_list, &dev->qp_list);
1956         /* Maintain CQ to QPs access, needed for further handling via reset flow
1957          */
1958         if (send_cq)
1959                 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
1960         if (recv_cq)
1961                 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
1962         mlx5_ib_unlock_cqs(send_cq, recv_cq);
1963         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1964
1965         return 0;
1966
1967 err_create:
1968         if (qp->create_type == MLX5_QP_USER)
1969                 destroy_qp_user(dev, pd, qp, base);
1970         else if (qp->create_type == MLX5_QP_KERNEL)
1971                 destroy_qp_kernel(dev, qp);
1972
1973 err:
1974         kvfree(in);
1975         return err;
1976 }
1977
1978 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
1979         __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
1980 {
1981         if (send_cq) {
1982                 if (recv_cq) {
1983                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
1984                                 spin_lock(&send_cq->lock);
1985                                 spin_lock_nested(&recv_cq->lock,
1986                                                  SINGLE_DEPTH_NESTING);
1987                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
1988                                 spin_lock(&send_cq->lock);
1989                                 __acquire(&recv_cq->lock);
1990                         } else {
1991                                 spin_lock(&recv_cq->lock);
1992                                 spin_lock_nested(&send_cq->lock,
1993                                                  SINGLE_DEPTH_NESTING);
1994                         }
1995                 } else {
1996                         spin_lock(&send_cq->lock);
1997                         __acquire(&recv_cq->lock);
1998                 }
1999         } else if (recv_cq) {
2000                 spin_lock(&recv_cq->lock);
2001                 __acquire(&send_cq->lock);
2002         } else {
2003                 __acquire(&send_cq->lock);
2004                 __acquire(&recv_cq->lock);
2005         }
2006 }
2007
2008 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2009         __releases(&send_cq->lock) __releases(&recv_cq->lock)
2010 {
2011         if (send_cq) {
2012                 if (recv_cq) {
2013                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
2014                                 spin_unlock(&recv_cq->lock);
2015                                 spin_unlock(&send_cq->lock);
2016                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2017                                 __release(&recv_cq->lock);
2018                                 spin_unlock(&send_cq->lock);
2019                         } else {
2020                                 spin_unlock(&send_cq->lock);
2021                                 spin_unlock(&recv_cq->lock);
2022                         }
2023                 } else {
2024                         __release(&recv_cq->lock);
2025                         spin_unlock(&send_cq->lock);
2026                 }
2027         } else if (recv_cq) {
2028                 __release(&send_cq->lock);
2029                 spin_unlock(&recv_cq->lock);
2030         } else {
2031                 __release(&recv_cq->lock);
2032                 __release(&send_cq->lock);
2033         }
2034 }
2035
2036 static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
2037 {
2038         return to_mpd(qp->ibqp.pd);
2039 }
2040
2041 static void get_cqs(enum ib_qp_type qp_type,
2042                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
2043                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
2044 {
2045         switch (qp_type) {
2046         case IB_QPT_XRC_TGT:
2047                 *send_cq = NULL;
2048                 *recv_cq = NULL;
2049                 break;
2050         case MLX5_IB_QPT_REG_UMR:
2051         case IB_QPT_XRC_INI:
2052                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2053                 *recv_cq = NULL;
2054                 break;
2055
2056         case IB_QPT_SMI:
2057         case MLX5_IB_QPT_HW_GSI:
2058         case IB_QPT_RC:
2059         case IB_QPT_UC:
2060         case IB_QPT_UD:
2061         case IB_QPT_RAW_IPV6:
2062         case IB_QPT_RAW_ETHERTYPE:
2063         case IB_QPT_RAW_PACKET:
2064                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2065                 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
2066                 break;
2067
2068         case IB_QPT_MAX:
2069         default:
2070                 *send_cq = NULL;
2071                 *recv_cq = NULL;
2072                 break;
2073         }
2074 }
2075
2076 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2077                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2078                                 u8 lag_tx_affinity);
2079
2080 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
2081 {
2082         struct mlx5_ib_cq *send_cq, *recv_cq;
2083         struct mlx5_ib_qp_base *base;
2084         unsigned long flags;
2085         int err;
2086
2087         if (qp->ibqp.rwq_ind_tbl) {
2088                 destroy_rss_raw_qp_tir(dev, qp);
2089                 return;
2090         }
2091
2092         base = (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
2093                 qp->flags & MLX5_IB_QP_UNDERLAY) ?
2094                &qp->raw_packet_qp.rq.base :
2095                &qp->trans_qp.base;
2096
2097         if (qp->state != IB_QPS_RESET) {
2098                 if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET &&
2099                     !(qp->flags & MLX5_IB_QP_UNDERLAY)) {
2100                         err = mlx5_core_qp_modify(dev->mdev,
2101                                                   MLX5_CMD_OP_2RST_QP, 0,
2102                                                   NULL, &base->mqp);
2103                 } else {
2104                         struct mlx5_modify_raw_qp_param raw_qp_param = {
2105                                 .operation = MLX5_CMD_OP_2RST_QP
2106                         };
2107
2108                         err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
2109                 }
2110                 if (err)
2111                         mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
2112                                      base->mqp.qpn);
2113         }
2114
2115         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
2116                 &send_cq, &recv_cq);
2117
2118         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2119         mlx5_ib_lock_cqs(send_cq, recv_cq);
2120         /* del from lists under both locks above to protect reset flow paths */
2121         list_del(&qp->qps_list);
2122         if (send_cq)
2123                 list_del(&qp->cq_send_list);
2124
2125         if (recv_cq)
2126                 list_del(&qp->cq_recv_list);
2127
2128         if (qp->create_type == MLX5_QP_KERNEL) {
2129                 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2130                                    qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
2131                 if (send_cq != recv_cq)
2132                         __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
2133                                            NULL);
2134         }
2135         mlx5_ib_unlock_cqs(send_cq, recv_cq);
2136         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2137
2138         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
2139             qp->flags & MLX5_IB_QP_UNDERLAY) {
2140                 destroy_raw_packet_qp(dev, qp);
2141         } else {
2142                 err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
2143                 if (err)
2144                         mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
2145                                      base->mqp.qpn);
2146         }
2147
2148         if (qp->create_type == MLX5_QP_KERNEL)
2149                 destroy_qp_kernel(dev, qp);
2150         else if (qp->create_type == MLX5_QP_USER)
2151                 destroy_qp_user(dev, &get_pd(qp)->ibpd, qp, base);
2152 }
2153
2154 static const char *ib_qp_type_str(enum ib_qp_type type)
2155 {
2156         switch (type) {
2157         case IB_QPT_SMI:
2158                 return "IB_QPT_SMI";
2159         case IB_QPT_GSI:
2160                 return "IB_QPT_GSI";
2161         case IB_QPT_RC:
2162                 return "IB_QPT_RC";
2163         case IB_QPT_UC:
2164                 return "IB_QPT_UC";
2165         case IB_QPT_UD:
2166                 return "IB_QPT_UD";
2167         case IB_QPT_RAW_IPV6:
2168                 return "IB_QPT_RAW_IPV6";
2169         case IB_QPT_RAW_ETHERTYPE:
2170                 return "IB_QPT_RAW_ETHERTYPE";
2171         case IB_QPT_XRC_INI:
2172                 return "IB_QPT_XRC_INI";
2173         case IB_QPT_XRC_TGT:
2174                 return "IB_QPT_XRC_TGT";
2175         case IB_QPT_RAW_PACKET:
2176                 return "IB_QPT_RAW_PACKET";
2177         case MLX5_IB_QPT_REG_UMR:
2178                 return "MLX5_IB_QPT_REG_UMR";
2179         case IB_QPT_DRIVER:
2180                 return "IB_QPT_DRIVER";
2181         case IB_QPT_MAX:
2182         default:
2183                 return "Invalid QP type";
2184         }
2185 }
2186
2187 static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd,
2188                                         struct ib_qp_init_attr *attr,
2189                                         struct mlx5_ib_create_qp *ucmd)
2190 {
2191         struct mlx5_ib_qp *qp;
2192         int err = 0;
2193         u32 uidx = MLX5_IB_DEFAULT_UIDX;
2194         void *dctc;
2195
2196         if (!attr->srq || !attr->recv_cq)
2197                 return ERR_PTR(-EINVAL);
2198
2199         err = get_qp_user_index(to_mucontext(pd->uobject->context),
2200                                 ucmd, sizeof(*ucmd), &uidx);
2201         if (err)
2202                 return ERR_PTR(err);
2203
2204         qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2205         if (!qp)
2206                 return ERR_PTR(-ENOMEM);
2207
2208         qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
2209         if (!qp->dct.in) {
2210                 err = -ENOMEM;
2211                 goto err_free;
2212         }
2213
2214         dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
2215         qp->qp_sub_type = MLX5_IB_QPT_DCT;
2216         MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn);
2217         MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn);
2218         MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn);
2219         MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key);
2220         MLX5_SET(dctc, dctc, user_index, uidx);
2221
2222         qp->state = IB_QPS_RESET;
2223
2224         return &qp->ibqp;
2225 err_free:
2226         kfree(qp);
2227         return ERR_PTR(err);
2228 }
2229
2230 static int set_mlx_qp_type(struct mlx5_ib_dev *dev,
2231                            struct ib_qp_init_attr *init_attr,
2232                            struct mlx5_ib_create_qp *ucmd,
2233                            struct ib_udata *udata)
2234 {
2235         enum { MLX_QP_FLAGS = MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI };
2236         int err;
2237
2238         if (!udata)
2239                 return -EINVAL;
2240
2241         if (udata->inlen < sizeof(*ucmd)) {
2242                 mlx5_ib_dbg(dev, "create_qp user command is smaller than expected\n");
2243                 return -EINVAL;
2244         }
2245         err = ib_copy_from_udata(ucmd, udata, sizeof(*ucmd));
2246         if (err)
2247                 return err;
2248
2249         if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCI) {
2250                 init_attr->qp_type = MLX5_IB_QPT_DCI;
2251         } else {
2252                 if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCT) {
2253                         init_attr->qp_type = MLX5_IB_QPT_DCT;
2254                 } else {
2255                         mlx5_ib_dbg(dev, "Invalid QP flags\n");
2256                         return -EINVAL;
2257                 }
2258         }
2259
2260         if (!MLX5_CAP_GEN(dev->mdev, dct)) {
2261                 mlx5_ib_dbg(dev, "DC transport is not supported\n");
2262                 return -EOPNOTSUPP;
2263         }
2264
2265         return 0;
2266 }
2267
2268 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
2269                                 struct ib_qp_init_attr *verbs_init_attr,
2270                                 struct ib_udata *udata)
2271 {
2272         struct mlx5_ib_dev *dev;
2273         struct mlx5_ib_qp *qp;
2274         u16 xrcdn = 0;
2275         int err;
2276         struct ib_qp_init_attr mlx_init_attr;
2277         struct ib_qp_init_attr *init_attr = verbs_init_attr;
2278
2279         if (pd) {
2280                 dev = to_mdev(pd->device);
2281
2282                 if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
2283                         if (!pd->uobject) {
2284                                 mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
2285                                 return ERR_PTR(-EINVAL);
2286                         } else if (!to_mucontext(pd->uobject->context)->cqe_version) {
2287                                 mlx5_ib_dbg(dev, "Raw Packet QP is only supported for CQE version > 0\n");
2288                                 return ERR_PTR(-EINVAL);
2289                         }
2290                 }
2291         } else {
2292                 /* being cautious here */
2293                 if (init_attr->qp_type != IB_QPT_XRC_TGT &&
2294                     init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
2295                         pr_warn("%s: no PD for transport %s\n", __func__,
2296                                 ib_qp_type_str(init_attr->qp_type));
2297                         return ERR_PTR(-EINVAL);
2298                 }
2299                 dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
2300         }
2301
2302         if (init_attr->qp_type == IB_QPT_DRIVER) {
2303                 struct mlx5_ib_create_qp ucmd;
2304
2305                 init_attr = &mlx_init_attr;
2306                 memcpy(init_attr, verbs_init_attr, sizeof(*verbs_init_attr));
2307                 err = set_mlx_qp_type(dev, init_attr, &ucmd, udata);
2308                 if (err)
2309                         return ERR_PTR(err);
2310
2311                 if (init_attr->qp_type == MLX5_IB_QPT_DCI) {
2312                         if (init_attr->cap.max_recv_wr ||
2313                             init_attr->cap.max_recv_sge) {
2314                                 mlx5_ib_dbg(dev, "DCI QP requires zero size receive queue\n");
2315                                 return ERR_PTR(-EINVAL);
2316                         }
2317                 } else {
2318                         return mlx5_ib_create_dct(pd, init_attr, &ucmd);
2319                 }
2320         }
2321
2322         switch (init_attr->qp_type) {
2323         case IB_QPT_XRC_TGT:
2324         case IB_QPT_XRC_INI:
2325                 if (!MLX5_CAP_GEN(dev->mdev, xrc)) {
2326                         mlx5_ib_dbg(dev, "XRC not supported\n");
2327                         return ERR_PTR(-ENOSYS);
2328                 }
2329                 init_attr->recv_cq = NULL;
2330                 if (init_attr->qp_type == IB_QPT_XRC_TGT) {
2331                         xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
2332                         init_attr->send_cq = NULL;
2333                 }
2334
2335                 /* fall through */
2336         case IB_QPT_RAW_PACKET:
2337         case IB_QPT_RC:
2338         case IB_QPT_UC:
2339         case IB_QPT_UD:
2340         case IB_QPT_SMI:
2341         case MLX5_IB_QPT_HW_GSI:
2342         case MLX5_IB_QPT_REG_UMR:
2343         case MLX5_IB_QPT_DCI:
2344                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2345                 if (!qp)
2346                         return ERR_PTR(-ENOMEM);
2347
2348                 err = create_qp_common(dev, pd, init_attr, udata, qp);
2349                 if (err) {
2350                         mlx5_ib_dbg(dev, "create_qp_common failed\n");
2351                         kfree(qp);
2352                         return ERR_PTR(err);
2353                 }
2354
2355                 if (is_qp0(init_attr->qp_type))
2356                         qp->ibqp.qp_num = 0;
2357                 else if (is_qp1(init_attr->qp_type))
2358                         qp->ibqp.qp_num = 1;
2359                 else
2360                         qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2361
2362                 mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
2363                             qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2364                             init_attr->recv_cq ? to_mcq(init_attr->recv_cq)->mcq.cqn : -1,
2365                             init_attr->send_cq ? to_mcq(init_attr->send_cq)->mcq.cqn : -1);
2366
2367                 qp->trans_qp.xrcdn = xrcdn;
2368
2369                 break;
2370
2371         case IB_QPT_GSI:
2372                 return mlx5_ib_gsi_create_qp(pd, init_attr);
2373
2374         case IB_QPT_RAW_IPV6:
2375         case IB_QPT_RAW_ETHERTYPE:
2376         case IB_QPT_MAX:
2377         default:
2378                 mlx5_ib_dbg(dev, "unsupported qp type %d\n",
2379                             init_attr->qp_type);
2380                 /* Don't support raw QPs */
2381                 return ERR_PTR(-EINVAL);
2382         }
2383
2384         if (verbs_init_attr->qp_type == IB_QPT_DRIVER)
2385                 qp->qp_sub_type = init_attr->qp_type;
2386
2387         return &qp->ibqp;
2388 }
2389
2390 static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)
2391 {
2392         struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device);
2393
2394         if (mqp->state == IB_QPS_RTR) {
2395                 int err;
2396
2397                 err = mlx5_core_destroy_dct(dev->mdev, &mqp->dct.mdct);
2398                 if (err) {
2399                         mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err);
2400                         return err;
2401                 }
2402         }
2403
2404         kfree(mqp->dct.in);
2405         kfree(mqp);
2406         return 0;
2407 }
2408
2409 int mlx5_ib_destroy_qp(struct ib_qp *qp)
2410 {
2411         struct mlx5_ib_dev *dev = to_mdev(qp->device);
2412         struct mlx5_ib_qp *mqp = to_mqp(qp);
2413
2414         if (unlikely(qp->qp_type == IB_QPT_GSI))
2415                 return mlx5_ib_gsi_destroy_qp(qp);
2416
2417         if (mqp->qp_sub_type == MLX5_IB_QPT_DCT)
2418                 return mlx5_ib_destroy_dct(mqp);
2419
2420         destroy_qp_common(dev, mqp);
2421
2422         kfree(mqp);
2423
2424         return 0;
2425 }
2426
2427 static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr,
2428                                    int attr_mask)
2429 {
2430         u32 hw_access_flags = 0;
2431         u8 dest_rd_atomic;
2432         u32 access_flags;
2433
2434         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2435                 dest_rd_atomic = attr->max_dest_rd_atomic;
2436         else
2437                 dest_rd_atomic = qp->trans_qp.resp_depth;
2438
2439         if (attr_mask & IB_QP_ACCESS_FLAGS)
2440                 access_flags = attr->qp_access_flags;
2441         else
2442                 access_flags = qp->trans_qp.atomic_rd_en;
2443
2444         if (!dest_rd_atomic)
2445                 access_flags &= IB_ACCESS_REMOTE_WRITE;
2446
2447         if (access_flags & IB_ACCESS_REMOTE_READ)
2448                 hw_access_flags |= MLX5_QP_BIT_RRE;
2449         if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
2450                 hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX);
2451         if (access_flags & IB_ACCESS_REMOTE_WRITE)
2452                 hw_access_flags |= MLX5_QP_BIT_RWE;
2453
2454         return cpu_to_be32(hw_access_flags);
2455 }
2456
2457 enum {
2458         MLX5_PATH_FLAG_FL       = 1 << 0,
2459         MLX5_PATH_FLAG_FREE_AR  = 1 << 1,
2460         MLX5_PATH_FLAG_COUNTER  = 1 << 2,
2461 };
2462
2463 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
2464 {
2465         if (rate == IB_RATE_PORT_CURRENT)
2466                 return 0;
2467
2468         if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS)
2469                 return -EINVAL;
2470
2471         while (rate != IB_RATE_PORT_CURRENT &&
2472                !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
2473                  MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
2474                 --rate;
2475
2476         return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;
2477 }
2478
2479 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
2480                                       struct mlx5_ib_sq *sq, u8 sl)
2481 {
2482         void *in;
2483         void *tisc;
2484         int inlen;
2485         int err;
2486
2487         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2488         in = kvzalloc(inlen, GFP_KERNEL);
2489         if (!in)
2490                 return -ENOMEM;
2491
2492         MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
2493
2494         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2495         MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
2496
2497         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2498
2499         kvfree(in);
2500
2501         return err;
2502 }
2503
2504 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
2505                                          struct mlx5_ib_sq *sq, u8 tx_affinity)
2506 {
2507         void *in;
2508         void *tisc;
2509         int inlen;
2510         int err;
2511
2512         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2513         in = kvzalloc(inlen, GFP_KERNEL);
2514         if (!in)
2515                 return -ENOMEM;
2516
2517         MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
2518
2519         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2520         MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
2521
2522         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2523
2524         kvfree(in);
2525
2526         return err;
2527 }
2528
2529 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2530                          const struct rdma_ah_attr *ah,
2531                          struct mlx5_qp_path *path, u8 port, int attr_mask,
2532                          u32 path_flags, const struct ib_qp_attr *attr,
2533                          bool alt)
2534 {
2535         const struct ib_global_route *grh = rdma_ah_read_grh(ah);
2536         int err;
2537         enum ib_gid_type gid_type;
2538         u8 ah_flags = rdma_ah_get_ah_flags(ah);
2539         u8 sl = rdma_ah_get_sl(ah);
2540
2541         if (attr_mask & IB_QP_PKEY_INDEX)
2542                 path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
2543                                                      attr->pkey_index);
2544
2545         if (ah_flags & IB_AH_GRH) {
2546                 if (grh->sgid_index >=
2547                     dev->mdev->port_caps[port - 1].gid_table_len) {
2548                         pr_err("sgid_index (%u) too large. max is %d\n",
2549                                grh->sgid_index,
2550                                dev->mdev->port_caps[port - 1].gid_table_len);
2551                         return -EINVAL;
2552                 }
2553         }
2554
2555         if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
2556                 if (!(ah_flags & IB_AH_GRH))
2557                         return -EINVAL;
2558
2559                 memcpy(path->rmac, ah->roce.dmac, sizeof(ah->roce.dmac));
2560                 if (qp->ibqp.qp_type == IB_QPT_RC ||
2561                     qp->ibqp.qp_type == IB_QPT_UC ||
2562                     qp->ibqp.qp_type == IB_QPT_XRC_INI ||
2563                     qp->ibqp.qp_type == IB_QPT_XRC_TGT)
2564                         path->udp_sport =
2565                                 mlx5_get_roce_udp_sport(dev, ah->grh.sgid_attr);
2566                 path->dci_cfi_prio_sl = (sl & 0x7) << 4;
2567                 gid_type = ah->grh.sgid_attr->gid_type;
2568                 if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
2569                         path->ecn_dscp = (grh->traffic_class >> 2) & 0x3f;
2570         } else {
2571                 path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
2572                 path->fl_free_ar |=
2573                         (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x40 : 0;
2574                 path->rlid = cpu_to_be16(rdma_ah_get_dlid(ah));
2575                 path->grh_mlid = rdma_ah_get_path_bits(ah) & 0x7f;
2576                 if (ah_flags & IB_AH_GRH)
2577                         path->grh_mlid  |= 1 << 7;
2578                 path->dci_cfi_prio_sl = sl & 0xf;
2579         }
2580
2581         if (ah_flags & IB_AH_GRH) {
2582                 path->mgid_index = grh->sgid_index;
2583                 path->hop_limit  = grh->hop_limit;
2584                 path->tclass_flowlabel =
2585                         cpu_to_be32((grh->traffic_class << 20) |
2586                                     (grh->flow_label));
2587                 memcpy(path->rgid, grh->dgid.raw, 16);
2588         }
2589
2590         err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah));
2591         if (err < 0)
2592                 return err;
2593         path->static_rate = err;
2594         path->port = port;
2595
2596         if (attr_mask & IB_QP_TIMEOUT)
2597                 path->ackto_lt = (alt ? attr->alt_timeout : attr->timeout) << 3;
2598
2599         if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
2600                 return modify_raw_packet_eth_prio(dev->mdev,
2601                                                   &qp->raw_packet_qp.sq,
2602                                                   sl & 0xf);
2603
2604         return 0;
2605 }
2606
2607 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
2608         [MLX5_QP_STATE_INIT] = {
2609                 [MLX5_QP_STATE_INIT] = {
2610                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2611                                           MLX5_QP_OPTPAR_RAE            |
2612                                           MLX5_QP_OPTPAR_RWE            |
2613                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2614                                           MLX5_QP_OPTPAR_PRI_PORT,
2615                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
2616                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2617                                           MLX5_QP_OPTPAR_PRI_PORT,
2618                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
2619                                           MLX5_QP_OPTPAR_Q_KEY          |
2620                                           MLX5_QP_OPTPAR_PRI_PORT,
2621                 },
2622                 [MLX5_QP_STATE_RTR] = {
2623                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2624                                           MLX5_QP_OPTPAR_RRE            |
2625                                           MLX5_QP_OPTPAR_RAE            |
2626                                           MLX5_QP_OPTPAR_RWE            |
2627                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2628                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2629                                           MLX5_QP_OPTPAR_RWE            |
2630                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2631                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
2632                                           MLX5_QP_OPTPAR_Q_KEY,
2633                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX    |
2634                                            MLX5_QP_OPTPAR_Q_KEY,
2635                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
2636                                           MLX5_QP_OPTPAR_RRE            |
2637                                           MLX5_QP_OPTPAR_RAE            |
2638                                           MLX5_QP_OPTPAR_RWE            |
2639                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2640                 },
2641         },
2642         [MLX5_QP_STATE_RTR] = {
2643                 [MLX5_QP_STATE_RTS] = {
2644                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2645                                           MLX5_QP_OPTPAR_RRE            |
2646                                           MLX5_QP_OPTPAR_RAE            |
2647                                           MLX5_QP_OPTPAR_RWE            |
2648                                           MLX5_QP_OPTPAR_PM_STATE       |
2649                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
2650                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2651                                           MLX5_QP_OPTPAR_RWE            |
2652                                           MLX5_QP_OPTPAR_PM_STATE,
2653                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
2654                 },
2655         },
2656         [MLX5_QP_STATE_RTS] = {
2657                 [MLX5_QP_STATE_RTS] = {
2658                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2659                                           MLX5_QP_OPTPAR_RAE            |
2660                                           MLX5_QP_OPTPAR_RWE            |
2661                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
2662                                           MLX5_QP_OPTPAR_PM_STATE       |
2663                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
2664                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
2665                                           MLX5_QP_OPTPAR_PM_STATE       |
2666                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
2667                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY          |
2668                                           MLX5_QP_OPTPAR_SRQN           |
2669                                           MLX5_QP_OPTPAR_CQN_RCV,
2670                 },
2671         },
2672         [MLX5_QP_STATE_SQER] = {
2673                 [MLX5_QP_STATE_RTS] = {
2674                         [MLX5_QP_ST_UD]  = MLX5_QP_OPTPAR_Q_KEY,
2675                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
2676                         [MLX5_QP_ST_UC]  = MLX5_QP_OPTPAR_RWE,
2677                         [MLX5_QP_ST_RC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT   |
2678                                            MLX5_QP_OPTPAR_RWE           |
2679                                            MLX5_QP_OPTPAR_RAE           |
2680                                            MLX5_QP_OPTPAR_RRE,
2681                 },
2682         },
2683 };
2684
2685 static int ib_nr_to_mlx5_nr(int ib_mask)
2686 {
2687         switch (ib_mask) {
2688         case IB_QP_STATE:
2689                 return 0;
2690         case IB_QP_CUR_STATE:
2691                 return 0;
2692         case IB_QP_EN_SQD_ASYNC_NOTIFY:
2693                 return 0;
2694         case IB_QP_ACCESS_FLAGS:
2695                 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
2696                         MLX5_QP_OPTPAR_RAE;
2697         case IB_QP_PKEY_INDEX:
2698                 return MLX5_QP_OPTPAR_PKEY_INDEX;
2699         case IB_QP_PORT:
2700                 return MLX5_QP_OPTPAR_PRI_PORT;
2701         case IB_QP_QKEY:
2702                 return MLX5_QP_OPTPAR_Q_KEY;
2703         case IB_QP_AV:
2704                 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
2705                         MLX5_QP_OPTPAR_PRI_PORT;
2706         case IB_QP_PATH_MTU:
2707                 return 0;
2708         case IB_QP_TIMEOUT:
2709                 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
2710         case IB_QP_RETRY_CNT:
2711                 return MLX5_QP_OPTPAR_RETRY_COUNT;
2712         case IB_QP_RNR_RETRY:
2713                 return MLX5_QP_OPTPAR_RNR_RETRY;
2714         case IB_QP_RQ_PSN:
2715                 return 0;
2716         case IB_QP_MAX_QP_RD_ATOMIC:
2717                 return MLX5_QP_OPTPAR_SRA_MAX;
2718         case IB_QP_ALT_PATH:
2719                 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
2720         case IB_QP_MIN_RNR_TIMER:
2721                 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
2722         case IB_QP_SQ_PSN:
2723                 return 0;
2724         case IB_QP_MAX_DEST_RD_ATOMIC:
2725                 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
2726                         MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
2727         case IB_QP_PATH_MIG_STATE:
2728                 return MLX5_QP_OPTPAR_PM_STATE;
2729         case IB_QP_CAP:
2730                 return 0;
2731         case IB_QP_DEST_QPN:
2732                 return 0;
2733         }
2734         return 0;
2735 }
2736
2737 static int ib_mask_to_mlx5_opt(int ib_mask)
2738 {
2739         int result = 0;
2740         int i;
2741
2742         for (i = 0; i < 8 * sizeof(int); i++) {
2743                 if ((1 << i) & ib_mask)
2744                         result |= ib_nr_to_mlx5_nr(1 << i);
2745         }
2746
2747         return result;
2748 }
2749
2750 static int modify_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
2751                                    struct mlx5_ib_rq *rq, int new_state,
2752                                    const struct mlx5_modify_raw_qp_param *raw_qp_param)
2753 {
2754         void *in;
2755         void *rqc;
2756         int inlen;
2757         int err;
2758
2759         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
2760         in = kvzalloc(inlen, GFP_KERNEL);
2761         if (!in)
2762                 return -ENOMEM;
2763
2764         MLX5_SET(modify_rq_in, in, rq_state, rq->state);
2765
2766         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
2767         MLX5_SET(rqc, rqc, state, new_state);
2768
2769         if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
2770                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
2771                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
2772                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
2773                         MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
2774                 } else
2775                         pr_info_once("%s: RAW PACKET QP counters are not supported on current FW\n",
2776                                      dev->ib_dev.name);
2777         }
2778
2779         err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in, inlen);
2780         if (err)
2781                 goto out;
2782
2783         rq->state = new_state;
2784
2785 out:
2786         kvfree(in);
2787         return err;
2788 }
2789
2790 static int modify_raw_packet_qp_sq(struct mlx5_core_dev *dev,
2791                                    struct mlx5_ib_sq *sq,
2792                                    int new_state,
2793                                    const struct mlx5_modify_raw_qp_param *raw_qp_param)
2794 {
2795         struct mlx5_ib_qp *ibqp = sq->base.container_mibqp;
2796         struct mlx5_rate_limit old_rl = ibqp->rl;
2797         struct mlx5_rate_limit new_rl = old_rl;
2798         bool new_rate_added = false;
2799         u16 rl_index = 0;
2800         void *in;
2801         void *sqc;
2802         int inlen;
2803         int err;
2804
2805         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
2806         in = kvzalloc(inlen, GFP_KERNEL);
2807         if (!in)
2808                 return -ENOMEM;
2809
2810         MLX5_SET(modify_sq_in, in, sq_state, sq->state);
2811
2812         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
2813         MLX5_SET(sqc, sqc, state, new_state);
2814
2815         if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) {
2816                 if (new_state != MLX5_SQC_STATE_RDY)
2817                         pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n",
2818                                 __func__);
2819                 else
2820                         new_rl = raw_qp_param->rl;
2821         }
2822
2823         if (!mlx5_rl_are_equal(&old_rl, &new_rl)) {
2824                 if (new_rl.rate) {
2825                         err = mlx5_rl_add_rate(dev, &rl_index, &new_rl);
2826                         if (err) {
2827                                 pr_err("Failed configuring rate limit(err %d): \
2828                                        rate %u, max_burst_sz %u, typical_pkt_sz %u\n",
2829                                        err, new_rl.rate, new_rl.max_burst_sz,
2830                                        new_rl.typical_pkt_sz);
2831
2832                                 goto out;
2833                         }
2834                         new_rate_added = true;
2835                 }
2836
2837                 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
2838                 /* index 0 means no limit */
2839                 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index);
2840         }
2841
2842         err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
2843         if (err) {
2844                 /* Remove new rate from table if failed */
2845                 if (new_rate_added)
2846                         mlx5_rl_remove_rate(dev, &new_rl);
2847                 goto out;
2848         }
2849
2850         /* Only remove the old rate after new rate was set */
2851         if ((old_rl.rate &&
2852              !mlx5_rl_are_equal(&old_rl, &new_rl)) ||
2853             (new_state != MLX5_SQC_STATE_RDY))
2854                 mlx5_rl_remove_rate(dev, &old_rl);
2855
2856         ibqp->rl = new_rl;
2857         sq->state = new_state;
2858
2859 out:
2860         kvfree(in);
2861         return err;
2862 }
2863
2864 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2865                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2866                                 u8 tx_affinity)
2867 {
2868         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
2869         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
2870         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
2871         int modify_rq = !!qp->rq.wqe_cnt;
2872         int modify_sq = !!qp->sq.wqe_cnt;
2873         int rq_state;
2874         int sq_state;
2875         int err;
2876
2877         switch (raw_qp_param->operation) {
2878         case MLX5_CMD_OP_RST2INIT_QP:
2879                 rq_state = MLX5_RQC_STATE_RDY;
2880                 sq_state = MLX5_SQC_STATE_RDY;
2881                 break;
2882         case MLX5_CMD_OP_2ERR_QP:
2883                 rq_state = MLX5_RQC_STATE_ERR;
2884                 sq_state = MLX5_SQC_STATE_ERR;
2885                 break;
2886         case MLX5_CMD_OP_2RST_QP:
2887                 rq_state = MLX5_RQC_STATE_RST;
2888                 sq_state = MLX5_SQC_STATE_RST;
2889                 break;
2890         case MLX5_CMD_OP_RTR2RTS_QP:
2891         case MLX5_CMD_OP_RTS2RTS_QP:
2892                 if (raw_qp_param->set_mask ==
2893                     MLX5_RAW_QP_RATE_LIMIT) {
2894                         modify_rq = 0;
2895                         sq_state = sq->state;
2896                 } else {
2897                         return raw_qp_param->set_mask ? -EINVAL : 0;
2898                 }
2899                 break;
2900         case MLX5_CMD_OP_INIT2INIT_QP:
2901         case MLX5_CMD_OP_INIT2RTR_QP:
2902                 if (raw_qp_param->set_mask)
2903                         return -EINVAL;
2904                 else
2905                         return 0;
2906         default:
2907                 WARN_ON(1);
2908                 return -EINVAL;
2909         }
2910
2911         if (modify_rq) {
2912                 err =  modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param);
2913                 if (err)
2914                         return err;
2915         }
2916
2917         if (modify_sq) {
2918                 if (tx_affinity) {
2919                         err = modify_raw_packet_tx_affinity(dev->mdev, sq,
2920                                                             tx_affinity);
2921                         if (err)
2922                                 return err;
2923                 }
2924
2925                 return modify_raw_packet_qp_sq(dev->mdev, sq, sq_state, raw_qp_param);
2926         }
2927
2928         return 0;
2929 }
2930
2931 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
2932                                const struct ib_qp_attr *attr, int attr_mask,
2933                                enum ib_qp_state cur_state, enum ib_qp_state new_state,
2934                                const struct mlx5_ib_modify_qp *ucmd)
2935 {
2936         static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
2937                 [MLX5_QP_STATE_RST] = {
2938                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2939                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2940                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_RST2INIT_QP,
2941                 },
2942                 [MLX5_QP_STATE_INIT]  = {
2943                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2944                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2945                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_INIT2INIT_QP,
2946                         [MLX5_QP_STATE_RTR]     = MLX5_CMD_OP_INIT2RTR_QP,
2947                 },
2948                 [MLX5_QP_STATE_RTR]   = {
2949                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2950                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2951                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTR2RTS_QP,
2952                 },
2953                 [MLX5_QP_STATE_RTS]   = {
2954                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2955                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2956                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTS2RTS_QP,
2957                 },
2958                 [MLX5_QP_STATE_SQD] = {
2959                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2960                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2961                 },
2962                 [MLX5_QP_STATE_SQER] = {
2963                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2964                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2965                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_SQERR2RTS_QP,
2966                 },
2967                 [MLX5_QP_STATE_ERR] = {
2968                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2969                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2970                 }
2971         };
2972
2973         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2974         struct mlx5_ib_qp *qp = to_mqp(ibqp);
2975         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
2976         struct mlx5_ib_cq *send_cq, *recv_cq;
2977         struct mlx5_qp_context *context;
2978         struct mlx5_ib_pd *pd;
2979         struct mlx5_ib_port *mibport = NULL;
2980         enum mlx5_qp_state mlx5_cur, mlx5_new;
2981         enum mlx5_qp_optpar optpar;
2982         int mlx5_st;
2983         int err;
2984         u16 op;
2985         u8 tx_affinity = 0;
2986
2987         mlx5_st = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
2988                              qp->qp_sub_type : ibqp->qp_type);
2989         if (mlx5_st < 0)
2990                 return -EINVAL;
2991
2992         context = kzalloc(sizeof(*context), GFP_KERNEL);
2993         if (!context)
2994                 return -ENOMEM;
2995
2996         context->flags = cpu_to_be32(mlx5_st << 16);
2997
2998         if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
2999                 context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
3000         } else {
3001                 switch (attr->path_mig_state) {
3002                 case IB_MIG_MIGRATED:
3003                         context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
3004                         break;
3005                 case IB_MIG_REARM:
3006                         context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
3007                         break;
3008                 case IB_MIG_ARMED:
3009                         context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
3010                         break;
3011                 }
3012         }
3013
3014         if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) {
3015                 if ((ibqp->qp_type == IB_QPT_RC) ||
3016                     (ibqp->qp_type == IB_QPT_UD &&
3017                      !(qp->flags & MLX5_IB_QP_SQPN_QP1)) ||
3018                     (ibqp->qp_type == IB_QPT_UC) ||
3019                     (ibqp->qp_type == IB_QPT_RAW_PACKET) ||
3020                     (ibqp->qp_type == IB_QPT_XRC_INI) ||
3021                     (ibqp->qp_type == IB_QPT_XRC_TGT)) {
3022                         if (mlx5_lag_is_active(dev->mdev)) {
3023                                 u8 p = mlx5_core_native_port_num(dev->mdev);
3024                                 tx_affinity = (unsigned int)atomic_add_return(1,
3025                                                 &dev->roce[p].next_port) %
3026                                                 MLX5_MAX_PORTS + 1;
3027                                 context->flags |= cpu_to_be32(tx_affinity << 24);
3028                         }
3029                 }
3030         }
3031
3032         if (is_sqp(ibqp->qp_type)) {
3033                 context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
3034         } else if ((ibqp->qp_type == IB_QPT_UD &&
3035                     !(qp->flags & MLX5_IB_QP_UNDERLAY)) ||
3036                    ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
3037                 context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
3038         } else if (attr_mask & IB_QP_PATH_MTU) {
3039                 if (attr->path_mtu < IB_MTU_256 ||
3040                     attr->path_mtu > IB_MTU_4096) {
3041                         mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
3042                         err = -EINVAL;
3043                         goto out;
3044                 }
3045                 context->mtu_msgmax = (attr->path_mtu << 5) |
3046                                       (u8)MLX5_CAP_GEN(dev->mdev, log_max_msg);
3047         }
3048
3049         if (attr_mask & IB_QP_DEST_QPN)
3050                 context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
3051
3052         if (attr_mask & IB_QP_PKEY_INDEX)
3053                 context->pri_path.pkey_index = cpu_to_be16(attr->pkey_index);
3054
3055         /* todo implement counter_index functionality */
3056
3057         if (is_sqp(ibqp->qp_type))
3058                 context->pri_path.port = qp->port;
3059
3060         if (attr_mask & IB_QP_PORT)
3061                 context->pri_path.port = attr->port_num;
3062
3063         if (attr_mask & IB_QP_AV) {
3064                 err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
3065                                     attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
3066                                     attr_mask, 0, attr, false);
3067                 if (err)
3068                         goto out;
3069         }
3070
3071         if (attr_mask & IB_QP_TIMEOUT)
3072                 context->pri_path.ackto_lt |= attr->timeout << 3;
3073
3074         if (attr_mask & IB_QP_ALT_PATH) {
3075                 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
3076                                     &context->alt_path,
3077                                     attr->alt_port_num,
3078                                     attr_mask | IB_QP_PKEY_INDEX | IB_QP_TIMEOUT,
3079                                     0, attr, true);
3080                 if (err)
3081                         goto out;
3082         }
3083
3084         pd = get_pd(qp);
3085         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
3086                 &send_cq, &recv_cq);
3087
3088         context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
3089         context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
3090         context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
3091         context->params1  = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
3092
3093         if (attr_mask & IB_QP_RNR_RETRY)
3094                 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
3095
3096         if (attr_mask & IB_QP_RETRY_CNT)
3097                 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
3098
3099         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
3100                 if (attr->max_rd_atomic)
3101                         context->params1 |=
3102                                 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
3103         }
3104
3105         if (attr_mask & IB_QP_SQ_PSN)
3106                 context->next_send_psn = cpu_to_be32(attr->sq_psn);
3107
3108         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
3109                 if (attr->max_dest_rd_atomic)
3110                         context->params2 |=
3111                                 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
3112         }
3113
3114         if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC))
3115                 context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask);
3116
3117         if (attr_mask & IB_QP_MIN_RNR_TIMER)
3118                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
3119
3120         if (attr_mask & IB_QP_RQ_PSN)
3121                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
3122
3123         if (attr_mask & IB_QP_QKEY)
3124                 context->qkey = cpu_to_be32(attr->qkey);
3125
3126         if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3127                 context->db_rec_addr = cpu_to_be64(qp->db.dma);
3128
3129         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3130                 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
3131                                qp->port) - 1;
3132
3133                 /* Underlay port should be used - index 0 function per port */
3134                 if (qp->flags & MLX5_IB_QP_UNDERLAY)
3135                         port_num = 0;
3136
3137                 mibport = &dev->port[port_num];
3138                 context->qp_counter_set_usr_page |=
3139                         cpu_to_be32((u32)(mibport->cnts.set_id) << 24);
3140         }
3141
3142         if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3143                 context->sq_crq_size |= cpu_to_be16(1 << 4);
3144
3145         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
3146                 context->deth_sqpn = cpu_to_be32(1);
3147
3148         mlx5_cur = to_mlx5_state(cur_state);
3149         mlx5_new = to_mlx5_state(new_state);
3150
3151         if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
3152             !optab[mlx5_cur][mlx5_new]) {
3153                 err = -EINVAL;
3154                 goto out;
3155         }
3156
3157         op = optab[mlx5_cur][mlx5_new];
3158         optpar = ib_mask_to_mlx5_opt(attr_mask);
3159         optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
3160
3161         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
3162             qp->flags & MLX5_IB_QP_UNDERLAY) {
3163                 struct mlx5_modify_raw_qp_param raw_qp_param = {};
3164
3165                 raw_qp_param.operation = op;
3166                 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3167                         raw_qp_param.rq_q_ctr_id = mibport->cnts.set_id;
3168                         raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
3169                 }
3170
3171                 if (attr_mask & IB_QP_RATE_LIMIT) {
3172                         raw_qp_param.rl.rate = attr->rate_limit;
3173
3174                         if (ucmd->burst_info.max_burst_sz) {
3175                                 if (attr->rate_limit &&
3176                                     MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) {
3177                                         raw_qp_param.rl.max_burst_sz =
3178                                                 ucmd->burst_info.max_burst_sz;
3179                                 } else {
3180                                         err = -EINVAL;
3181                                         goto out;
3182                                 }
3183                         }
3184
3185                         if (ucmd->burst_info.typical_pkt_sz) {
3186                                 if (attr->rate_limit &&
3187                                     MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) {
3188                                         raw_qp_param.rl.typical_pkt_sz =
3189                                                 ucmd->burst_info.typical_pkt_sz;
3190                                 } else {
3191                                         err = -EINVAL;
3192                                         goto out;
3193                                 }
3194                         }
3195
3196                         raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT;
3197                 }
3198
3199                 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
3200         } else {
3201                 err = mlx5_core_qp_modify(dev->mdev, op, optpar, context,
3202                                           &base->mqp);
3203         }
3204
3205         if (err)
3206                 goto out;
3207
3208         qp->state = new_state;
3209
3210         if (attr_mask & IB_QP_ACCESS_FLAGS)
3211                 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
3212         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
3213                 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
3214         if (attr_mask & IB_QP_PORT)
3215                 qp->port = attr->port_num;
3216         if (attr_mask & IB_QP_ALT_PATH)
3217                 qp->trans_qp.alt_port = attr->alt_port_num;
3218
3219         /*
3220          * If we moved a kernel QP to RESET, clean up all old CQ
3221          * entries and reinitialize the QP.
3222          */
3223         if (new_state == IB_QPS_RESET &&
3224             !ibqp->uobject && ibqp->qp_type != IB_QPT_XRC_TGT) {
3225                 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
3226                                  ibqp->srq ? to_msrq(ibqp->srq) : NULL);
3227                 if (send_cq != recv_cq)
3228                         mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
3229
3230                 qp->rq.head = 0;
3231                 qp->rq.tail = 0;
3232                 qp->sq.head = 0;
3233                 qp->sq.tail = 0;
3234                 qp->sq.cur_post = 0;
3235                 qp->sq.last_poll = 0;
3236                 qp->db.db[MLX5_RCV_DBR] = 0;
3237                 qp->db.db[MLX5_SND_DBR] = 0;
3238         }
3239
3240 out:
3241         kfree(context);
3242         return err;
3243 }
3244
3245 static inline bool is_valid_mask(int mask, int req, int opt)
3246 {
3247         if ((mask & req) != req)
3248                 return false;
3249
3250         if (mask & ~(req | opt))
3251                 return false;
3252
3253         return true;
3254 }
3255
3256 /* check valid transition for driver QP types
3257  * for now the only QP type that this function supports is DCI
3258  */
3259 static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state,
3260                                 enum ib_qp_attr_mask attr_mask)
3261 {
3262         int req = IB_QP_STATE;
3263         int opt = 0;
3264
3265         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3266                 req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
3267                 return is_valid_mask(attr_mask, req, opt);
3268         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
3269                 opt = IB_QP_PKEY_INDEX | IB_QP_PORT;
3270                 return is_valid_mask(attr_mask, req, opt);
3271         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
3272                 req |= IB_QP_PATH_MTU;
3273                 opt = IB_QP_PKEY_INDEX;
3274                 return is_valid_mask(attr_mask, req, opt);
3275         } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
3276                 req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY |
3277                        IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN;
3278                 opt = IB_QP_MIN_RNR_TIMER;
3279                 return is_valid_mask(attr_mask, req, opt);
3280         } else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) {
3281                 opt = IB_QP_MIN_RNR_TIMER;
3282                 return is_valid_mask(attr_mask, req, opt);
3283         } else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) {
3284                 return is_valid_mask(attr_mask, req, opt);
3285         }
3286         return false;
3287 }
3288
3289 /* mlx5_ib_modify_dct: modify a DCT QP
3290  * valid transitions are:
3291  * RESET to INIT: must set access_flags, pkey_index and port
3292  * INIT  to RTR : must set min_rnr_timer, tclass, flow_label,
3293  *                         mtu, gid_index and hop_limit
3294  * Other transitions and attributes are illegal
3295  */
3296 static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3297                               int attr_mask, struct ib_udata *udata)
3298 {
3299         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3300         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3301         enum ib_qp_state cur_state, new_state;
3302         int err = 0;
3303         int required = IB_QP_STATE;
3304         void *dctc;
3305
3306         if (!(attr_mask & IB_QP_STATE))
3307                 return -EINVAL;
3308
3309         cur_state = qp->state;
3310         new_state = attr->qp_state;
3311
3312         dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
3313         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3314                 required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
3315                 if (!is_valid_mask(attr_mask, required, 0))
3316                         return -EINVAL;
3317
3318                 if (attr->port_num == 0 ||
3319                     attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
3320                         mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
3321                                     attr->port_num, dev->num_ports);
3322                         return -EINVAL;
3323                 }
3324                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
3325                         MLX5_SET(dctc, dctc, rre, 1);
3326                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
3327                         MLX5_SET(dctc, dctc, rwe, 1);
3328                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) {
3329                         if (!mlx5_ib_dc_atomic_is_supported(dev))
3330                                 return -EOPNOTSUPP;
3331                         MLX5_SET(dctc, dctc, rae, 1);
3332                         MLX5_SET(dctc, dctc, atomic_mode, MLX5_ATOMIC_MODE_DCT_CX);
3333                 }
3334                 MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index);
3335                 MLX5_SET(dctc, dctc, port, attr->port_num);
3336                 MLX5_SET(dctc, dctc, counter_set_id, dev->port[attr->port_num - 1].cnts.set_id);
3337
3338         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
3339                 struct mlx5_ib_modify_qp_resp resp = {};
3340                 u32 min_resp_len = offsetof(typeof(resp), dctn) +
3341                                    sizeof(resp.dctn);
3342
3343                 if (udata->outlen < min_resp_len)
3344                         return -EINVAL;
3345                 resp.response_length = min_resp_len;
3346
3347                 required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU;
3348                 if (!is_valid_mask(attr_mask, required, 0))
3349                         return -EINVAL;
3350                 MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer);
3351                 MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class);
3352                 MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label);
3353                 MLX5_SET(dctc, dctc, mtu, attr->path_mtu);
3354                 MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index);
3355                 MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit);
3356
3357                 err = mlx5_core_create_dct(dev->mdev, &qp->dct.mdct, qp->dct.in,
3358                                            MLX5_ST_SZ_BYTES(create_dct_in));
3359                 if (err)
3360                         return err;
3361                 resp.dctn = qp->dct.mdct.mqp.qpn;
3362                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
3363                 if (err) {
3364                         mlx5_core_destroy_dct(dev->mdev, &qp->dct.mdct);
3365                         return err;
3366                 }
3367         } else {
3368                 mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state);
3369                 return -EINVAL;
3370         }
3371         if (err)
3372                 qp->state = IB_QPS_ERR;
3373         else
3374                 qp->state = new_state;
3375         return err;
3376 }
3377
3378 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3379                       int attr_mask, struct ib_udata *udata)
3380 {
3381         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3382         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3383         struct mlx5_ib_modify_qp ucmd = {};
3384         enum ib_qp_type qp_type;
3385         enum ib_qp_state cur_state, new_state;
3386         size_t required_cmd_sz;
3387         int err = -EINVAL;
3388         int port;
3389         enum rdma_link_layer ll = IB_LINK_LAYER_UNSPECIFIED;
3390
3391         if (ibqp->rwq_ind_tbl)
3392                 return -ENOSYS;
3393
3394         if (udata && udata->inlen) {
3395                 required_cmd_sz = offsetof(typeof(ucmd), reserved) +
3396                         sizeof(ucmd.reserved);
3397                 if (udata->inlen < required_cmd_sz)
3398                         return -EINVAL;
3399
3400                 if (udata->inlen > sizeof(ucmd) &&
3401                     !ib_is_udata_cleared(udata, sizeof(ucmd),
3402                                          udata->inlen - sizeof(ucmd)))
3403                         return -EOPNOTSUPP;
3404
3405                 if (ib_copy_from_udata(&ucmd, udata,
3406                                        min(udata->inlen, sizeof(ucmd))))
3407                         return -EFAULT;
3408
3409                 if (ucmd.comp_mask ||
3410                     memchr_inv(&ucmd.reserved, 0, sizeof(ucmd.reserved)) ||
3411                     memchr_inv(&ucmd.burst_info.reserved, 0,
3412                                sizeof(ucmd.burst_info.reserved)))
3413                         return -EOPNOTSUPP;
3414         }
3415
3416         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
3417                 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
3418
3419         if (ibqp->qp_type == IB_QPT_DRIVER)
3420                 qp_type = qp->qp_sub_type;
3421         else
3422                 qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
3423                         IB_QPT_GSI : ibqp->qp_type;
3424
3425         if (qp_type == MLX5_IB_QPT_DCT)
3426                 return mlx5_ib_modify_dct(ibqp, attr, attr_mask, udata);
3427
3428         mutex_lock(&qp->mutex);
3429
3430         cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
3431         new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
3432
3433         if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
3434                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
3435                 ll = dev->ib_dev.get_link_layer(&dev->ib_dev, port);
3436         }
3437
3438         if (qp->flags & MLX5_IB_QP_UNDERLAY) {
3439                 if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
3440                         mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
3441                                     attr_mask);
3442                         goto out;
3443                 }
3444         } else if (qp_type != MLX5_IB_QPT_REG_UMR &&
3445                    qp_type != MLX5_IB_QPT_DCI &&
3446                    !ib_modify_qp_is_ok(cur_state, new_state, qp_type, attr_mask, ll)) {
3447                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
3448                             cur_state, new_state, ibqp->qp_type, attr_mask);
3449                 goto out;
3450         } else if (qp_type == MLX5_IB_QPT_DCI &&
3451                    !modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) {
3452                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
3453                             cur_state, new_state, qp_type, attr_mask);
3454                 goto out;
3455         }
3456
3457         if ((attr_mask & IB_QP_PORT) &&
3458             (attr->port_num == 0 ||
3459              attr->port_num > dev->num_ports)) {
3460                 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
3461                             attr->port_num, dev->num_ports);
3462                 goto out;
3463         }
3464
3465         if (attr_mask & IB_QP_PKEY_INDEX) {
3466                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
3467                 if (attr->pkey_index >=
3468                     dev->mdev->port_caps[port - 1].pkey_table_len) {
3469                         mlx5_ib_dbg(dev, "invalid pkey index %d\n",
3470                                     attr->pkey_index);
3471                         goto out;
3472                 }
3473         }
3474
3475         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
3476             attr->max_rd_atomic >
3477             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
3478                 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
3479                             attr->max_rd_atomic);
3480                 goto out;
3481         }
3482
3483         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
3484             attr->max_dest_rd_atomic >
3485             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
3486                 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
3487                             attr->max_dest_rd_atomic);
3488                 goto out;
3489         }
3490
3491         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
3492                 err = 0;
3493                 goto out;
3494         }
3495
3496         err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state,
3497                                   new_state, &ucmd);
3498
3499 out:
3500         mutex_unlock(&qp->mutex);
3501         return err;
3502 }
3503
3504 static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
3505 {
3506         struct mlx5_ib_cq *cq;
3507         unsigned cur;
3508
3509         cur = wq->head - wq->tail;
3510         if (likely(cur + nreq < wq->max_post))
3511                 return 0;
3512
3513         cq = to_mcq(ib_cq);
3514         spin_lock(&cq->lock);
3515         cur = wq->head - wq->tail;
3516         spin_unlock(&cq->lock);
3517
3518         return cur + nreq >= wq->max_post;
3519 }
3520
3521 static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
3522                                           u64 remote_addr, u32 rkey)
3523 {
3524         rseg->raddr    = cpu_to_be64(remote_addr);
3525         rseg->rkey     = cpu_to_be32(rkey);
3526         rseg->reserved = 0;
3527 }
3528
3529 static void *set_eth_seg(struct mlx5_wqe_eth_seg *eseg,
3530                          struct ib_send_wr *wr, void *qend,
3531                          struct mlx5_ib_qp *qp, int *size)
3532 {
3533         void *seg = eseg;
3534
3535         memset(eseg, 0, sizeof(struct mlx5_wqe_eth_seg));
3536
3537         if (wr->send_flags & IB_SEND_IP_CSUM)
3538                 eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM |
3539                                  MLX5_ETH_WQE_L4_CSUM;
3540
3541         seg += sizeof(struct mlx5_wqe_eth_seg);
3542         *size += sizeof(struct mlx5_wqe_eth_seg) / 16;
3543
3544         if (wr->opcode == IB_WR_LSO) {
3545                 struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
3546                 int size_of_inl_hdr_start = sizeof(eseg->inline_hdr.start);
3547                 u64 left, leftlen, copysz;
3548                 void *pdata = ud_wr->header;
3549
3550                 left = ud_wr->hlen;
3551                 eseg->mss = cpu_to_be16(ud_wr->mss);
3552                 eseg->inline_hdr.sz = cpu_to_be16(left);
3553
3554                 /*
3555                  * check if there is space till the end of queue, if yes,
3556                  * copy all in one shot, otherwise copy till the end of queue,
3557                  * rollback and than the copy the left
3558                  */
3559                 leftlen = qend - (void *)eseg->inline_hdr.start;
3560                 copysz = min_t(u64, leftlen, left);
3561
3562                 memcpy(seg - size_of_inl_hdr_start, pdata, copysz);
3563
3564                 if (likely(copysz > size_of_inl_hdr_start)) {
3565                         seg += ALIGN(copysz - size_of_inl_hdr_start, 16);
3566                         *size += ALIGN(copysz - size_of_inl_hdr_start, 16) / 16;
3567                 }
3568
3569                 if (unlikely(copysz < left)) { /* the last wqe in the queue */
3570                         seg = mlx5_get_send_wqe(qp, 0);
3571                         left -= copysz;
3572                         pdata += copysz;
3573                         memcpy(seg, pdata, left);
3574                         seg += ALIGN(left, 16);
3575                         *size += ALIGN(left, 16) / 16;
3576                 }
3577         }
3578
3579         return seg;
3580 }
3581
3582 static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
3583                              struct ib_send_wr *wr)
3584 {
3585         memcpy(&dseg->av, &to_mah(ud_wr(wr)->ah)->av, sizeof(struct mlx5_av));
3586         dseg->av.dqp_dct = cpu_to_be32(ud_wr(wr)->remote_qpn | MLX5_EXTENDED_UD_AV);
3587         dseg->av.key.qkey.qkey = cpu_to_be32(ud_wr(wr)->remote_qkey);
3588 }
3589
3590 static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
3591 {
3592         dseg->byte_count = cpu_to_be32(sg->length);
3593         dseg->lkey       = cpu_to_be32(sg->lkey);
3594         dseg->addr       = cpu_to_be64(sg->addr);
3595 }
3596
3597 static u64 get_xlt_octo(u64 bytes)
3598 {
3599         return ALIGN(bytes, MLX5_IB_UMR_XLT_ALIGNMENT) /
3600                MLX5_IB_UMR_OCTOWORD;
3601 }
3602
3603 static __be64 frwr_mkey_mask(void)
3604 {
3605         u64 result;
3606
3607         result = MLX5_MKEY_MASK_LEN             |
3608                 MLX5_MKEY_MASK_PAGE_SIZE        |
3609                 MLX5_MKEY_MASK_START_ADDR       |
3610                 MLX5_MKEY_MASK_EN_RINVAL        |
3611                 MLX5_MKEY_MASK_KEY              |
3612                 MLX5_MKEY_MASK_LR               |
3613                 MLX5_MKEY_MASK_LW               |
3614                 MLX5_MKEY_MASK_RR               |
3615                 MLX5_MKEY_MASK_RW               |
3616                 MLX5_MKEY_MASK_A                |
3617                 MLX5_MKEY_MASK_SMALL_FENCE      |
3618                 MLX5_MKEY_MASK_FREE;
3619
3620         return cpu_to_be64(result);
3621 }
3622
3623 static __be64 sig_mkey_mask(void)
3624 {
3625         u64 result;
3626
3627         result = MLX5_MKEY_MASK_LEN             |
3628                 MLX5_MKEY_MASK_PAGE_SIZE        |
3629                 MLX5_MKEY_MASK_START_ADDR       |
3630                 MLX5_MKEY_MASK_EN_SIGERR        |
3631                 MLX5_MKEY_MASK_EN_RINVAL        |
3632                 MLX5_MKEY_MASK_KEY              |
3633                 MLX5_MKEY_MASK_LR               |
3634                 MLX5_MKEY_MASK_LW               |
3635                 MLX5_MKEY_MASK_RR               |
3636                 MLX5_MKEY_MASK_RW               |
3637                 MLX5_MKEY_MASK_SMALL_FENCE      |
3638                 MLX5_MKEY_MASK_FREE             |
3639                 MLX5_MKEY_MASK_BSF_EN;
3640
3641         return cpu_to_be64(result);
3642 }
3643
3644 static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
3645                             struct mlx5_ib_mr *mr, bool umr_inline)
3646 {
3647         int size = mr->ndescs * mr->desc_size;
3648
3649         memset(umr, 0, sizeof(*umr));
3650
3651         umr->flags = MLX5_UMR_CHECK_NOT_FREE;
3652         if (umr_inline)
3653                 umr->flags |= MLX5_UMR_INLINE;
3654         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
3655         umr->mkey_mask = frwr_mkey_mask();
3656 }
3657
3658 static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
3659 {
3660         memset(umr, 0, sizeof(*umr));
3661         umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
3662         umr->flags = MLX5_UMR_INLINE;
3663 }
3664
3665 static __be64 get_umr_enable_mr_mask(void)
3666 {
3667         u64 result;
3668
3669         result = MLX5_MKEY_MASK_KEY |
3670                  MLX5_MKEY_MASK_FREE;
3671
3672         return cpu_to_be64(result);
3673 }
3674
3675 static __be64 get_umr_disable_mr_mask(void)
3676 {
3677         u64 result;
3678
3679         result = MLX5_MKEY_MASK_FREE;
3680
3681         return cpu_to_be64(result);
3682 }
3683
3684 static __be64 get_umr_update_translation_mask(void)
3685 {
3686         u64 result;
3687
3688         result = MLX5_MKEY_MASK_LEN |
3689                  MLX5_MKEY_MASK_PAGE_SIZE |
3690                  MLX5_MKEY_MASK_START_ADDR;
3691
3692         return cpu_to_be64(result);
3693 }
3694
3695 static __be64 get_umr_update_access_mask(int atomic)
3696 {
3697         u64 result;
3698
3699         result = MLX5_MKEY_MASK_LR |
3700                  MLX5_MKEY_MASK_LW |
3701                  MLX5_MKEY_MASK_RR |
3702                  MLX5_MKEY_MASK_RW;
3703
3704         if (atomic)
3705                 result |= MLX5_MKEY_MASK_A;
3706
3707         return cpu_to_be64(result);
3708 }
3709
3710 static __be64 get_umr_update_pd_mask(void)
3711 {
3712         u64 result;
3713
3714         result = MLX5_MKEY_MASK_PD;
3715
3716         return cpu_to_be64(result);
3717 }
3718
3719 static int umr_check_mkey_mask(struct mlx5_ib_dev *dev, u64 mask)
3720 {
3721         if ((mask & MLX5_MKEY_MASK_PAGE_SIZE &&
3722              MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) ||
3723             (mask & MLX5_MKEY_MASK_A &&
3724              MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled)))
3725                 return -EPERM;
3726         return 0;
3727 }
3728
3729 static int set_reg_umr_segment(struct mlx5_ib_dev *dev,
3730                                struct mlx5_wqe_umr_ctrl_seg *umr,
3731                                struct ib_send_wr *wr, int atomic)
3732 {
3733         struct mlx5_umr_wr *umrwr = umr_wr(wr);
3734
3735         memset(umr, 0, sizeof(*umr));
3736
3737         if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
3738                 umr->flags = MLX5_UMR_CHECK_FREE; /* fail if free */
3739         else
3740                 umr->flags = MLX5_UMR_CHECK_NOT_FREE; /* fail if not free */
3741
3742         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(umrwr->xlt_size));
3743         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_XLT) {
3744                 u64 offset = get_xlt_octo(umrwr->offset);
3745
3746                 umr->xlt_offset = cpu_to_be16(offset & 0xffff);
3747                 umr->xlt_offset_47_16 = cpu_to_be32(offset >> 16);
3748                 umr->flags |= MLX5_UMR_TRANSLATION_OFFSET_EN;
3749         }
3750         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION)
3751                 umr->mkey_mask |= get_umr_update_translation_mask();
3752         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD_ACCESS) {
3753                 umr->mkey_mask |= get_umr_update_access_mask(atomic);
3754                 umr->mkey_mask |= get_umr_update_pd_mask();
3755         }
3756         if (wr->send_flags & MLX5_IB_SEND_UMR_ENABLE_MR)
3757                 umr->mkey_mask |= get_umr_enable_mr_mask();
3758         if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
3759                 umr->mkey_mask |= get_umr_disable_mr_mask();
3760
3761         if (!wr->num_sge)
3762                 umr->flags |= MLX5_UMR_INLINE;
3763
3764         return umr_check_mkey_mask(dev, be64_to_cpu(umr->mkey_mask));
3765 }
3766
3767 static u8 get_umr_flags(int acc)
3768 {
3769         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
3770                (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
3771                (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
3772                (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
3773                 MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
3774 }
3775
3776 static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
3777                              struct mlx5_ib_mr *mr,
3778                              u32 key, int access)
3779 {
3780         int ndescs = ALIGN(mr->ndescs, 8) >> 1;
3781
3782         memset(seg, 0, sizeof(*seg));
3783
3784         if (mr->access_mode == MLX5_MKC_ACCESS_MODE_MTT)
3785                 seg->log2_page_size = ilog2(mr->ibmr.page_size);
3786         else if (mr->access_mode == MLX5_MKC_ACCESS_MODE_KLMS)
3787                 /* KLMs take twice the size of MTTs */
3788                 ndescs *= 2;
3789
3790         seg->flags = get_umr_flags(access) | mr->access_mode;
3791         seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
3792         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
3793         seg->start_addr = cpu_to_be64(mr->ibmr.iova);
3794         seg->len = cpu_to_be64(mr->ibmr.length);
3795         seg->xlt_oct_size = cpu_to_be32(ndescs);
3796 }
3797
3798 static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
3799 {
3800         memset(seg, 0, sizeof(*seg));
3801         seg->status = MLX5_MKEY_STATUS_FREE;
3802 }
3803
3804 static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr)
3805 {
3806         struct mlx5_umr_wr *umrwr = umr_wr(wr);
3807
3808         memset(seg, 0, sizeof(*seg));
3809         if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
3810                 seg->status = MLX5_MKEY_STATUS_FREE;
3811
3812         seg->flags = convert_access(umrwr->access_flags);
3813         if (umrwr->pd)
3814                 seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
3815         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION &&
3816             !umrwr->length)
3817                 seg->flags_pd |= cpu_to_be32(MLX5_MKEY_LEN64);
3818
3819         seg->start_addr = cpu_to_be64(umrwr->virt_addr);
3820         seg->len = cpu_to_be64(umrwr->length);
3821         seg->log2_page_size = umrwr->page_shift;
3822         seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
3823                                        mlx5_mkey_variant(umrwr->mkey));
3824 }
3825
3826 static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
3827                              struct mlx5_ib_mr *mr,
3828                              struct mlx5_ib_pd *pd)
3829 {
3830         int bcount = mr->desc_size * mr->ndescs;
3831
3832         dseg->addr = cpu_to_be64(mr->desc_map);
3833         dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
3834         dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
3835 }
3836
3837 static void set_reg_umr_inline_seg(void *seg, struct mlx5_ib_qp *qp,
3838                                    struct mlx5_ib_mr *mr, int mr_list_size)
3839 {
3840         void *qend = qp->sq.qend;
3841         void *addr = mr->descs;
3842         int copy;
3843
3844         if (unlikely(seg + mr_list_size > qend)) {
3845                 copy = qend - seg;
3846                 memcpy(seg, addr, copy);
3847                 addr += copy;
3848                 mr_list_size -= copy;
3849                 seg = mlx5_get_send_wqe(qp, 0);
3850         }
3851         memcpy(seg, addr, mr_list_size);
3852         seg += mr_list_size;
3853 }
3854
3855 static __be32 send_ieth(struct ib_send_wr *wr)
3856 {
3857         switch (wr->opcode) {
3858         case IB_WR_SEND_WITH_IMM:
3859         case IB_WR_RDMA_WRITE_WITH_IMM:
3860                 return wr->ex.imm_data;
3861
3862         case IB_WR_SEND_WITH_INV:
3863                 return cpu_to_be32(wr->ex.invalidate_rkey);
3864
3865         default:
3866                 return 0;
3867         }
3868 }
3869
3870 static u8 calc_sig(void *wqe, int size)
3871 {
3872         u8 *p = wqe;
3873         u8 res = 0;
3874         int i;
3875
3876         for (i = 0; i < size; i++)
3877                 res ^= p[i];
3878
3879         return ~res;
3880 }
3881
3882 static u8 wq_sig(void *wqe)
3883 {
3884         return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
3885 }
3886
3887 static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr,
3888                             void *wqe, int *sz)
3889 {
3890         struct mlx5_wqe_inline_seg *seg;
3891         void *qend = qp->sq.qend;
3892         void *addr;
3893         int inl = 0;
3894         int copy;
3895         int len;
3896         int i;
3897
3898         seg = wqe;
3899         wqe += sizeof(*seg);
3900         for (i = 0; i < wr->num_sge; i++) {
3901                 addr = (void *)(unsigned long)(wr->sg_list[i].addr);
3902                 len  = wr->sg_list[i].length;
3903                 inl += len;
3904
3905                 if (unlikely(inl > qp->max_inline_data))
3906                         return -ENOMEM;
3907
3908                 if (unlikely(wqe + len > qend)) {
3909                         copy = qend - wqe;
3910                         memcpy(wqe, addr, copy);
3911                         addr += copy;
3912                         len -= copy;
3913                         wqe = mlx5_get_send_wqe(qp, 0);
3914                 }
3915                 memcpy(wqe, addr, len);
3916                 wqe += len;
3917         }
3918
3919         seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
3920
3921         *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
3922
3923         return 0;
3924 }
3925
3926 static u16 prot_field_size(enum ib_signature_type type)
3927 {
3928         switch (type) {
3929         case IB_SIG_TYPE_T10_DIF:
3930                 return MLX5_DIF_SIZE;
3931         default:
3932                 return 0;
3933         }
3934 }
3935
3936 static u8 bs_selector(int block_size)
3937 {
3938         switch (block_size) {
3939         case 512:           return 0x1;
3940         case 520:           return 0x2;
3941         case 4096:          return 0x3;
3942         case 4160:          return 0x4;
3943         case 1073741824:    return 0x5;
3944         default:            return 0;
3945         }
3946 }
3947
3948 static void mlx5_fill_inl_bsf(struct ib_sig_domain *domain,
3949                               struct mlx5_bsf_inl *inl)
3950 {
3951         /* Valid inline section and allow BSF refresh */
3952         inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID |
3953                                        MLX5_BSF_REFRESH_DIF);
3954         inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag);
3955         inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag);
3956         /* repeating block */
3957         inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK;
3958         inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ?
3959                         MLX5_DIF_CRC : MLX5_DIF_IPCS;
3960
3961         if (domain->sig.dif.ref_remap)
3962                 inl->dif_inc_ref_guard_check |= MLX5_BSF_INC_REFTAG;
3963
3964         if (domain->sig.dif.app_escape) {
3965                 if (domain->sig.dif.ref_escape)
3966                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPREF_ESCAPE;
3967                 else
3968                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPTAG_ESCAPE;
3969         }
3970
3971         inl->dif_app_bitmask_check =
3972                 cpu_to_be16(domain->sig.dif.apptag_check_mask);
3973 }
3974
3975 static int mlx5_set_bsf(struct ib_mr *sig_mr,
3976                         struct ib_sig_attrs *sig_attrs,
3977                         struct mlx5_bsf *bsf, u32 data_size)
3978 {
3979         struct mlx5_core_sig_ctx *msig = to_mmr(sig_mr)->sig;
3980         struct mlx5_bsf_basic *basic = &bsf->basic;
3981         struct ib_sig_domain *mem = &sig_attrs->mem;
3982         struct ib_sig_domain *wire = &sig_attrs->wire;
3983
3984         memset(bsf, 0, sizeof(*bsf));
3985
3986         /* Basic + Extended + Inline */
3987         basic->bsf_size_sbs = 1 << 7;
3988         /* Input domain check byte mask */
3989         basic->check_byte_mask = sig_attrs->check_mask;
3990         basic->raw_data_size = cpu_to_be32(data_size);
3991
3992         /* Memory domain */
3993         switch (sig_attrs->mem.sig_type) {
3994         case IB_SIG_TYPE_NONE:
3995                 break;
3996         case IB_SIG_TYPE_T10_DIF:
3997                 basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval);
3998                 basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx);
3999                 mlx5_fill_inl_bsf(mem, &bsf->m_inl);
4000                 break;
4001         default:
4002                 return -EINVAL;
4003         }
4004
4005         /* Wire domain */
4006         switch (sig_attrs->wire.sig_type) {
4007         case IB_SIG_TYPE_NONE:
4008                 break;
4009         case IB_SIG_TYPE_T10_DIF:
4010                 if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval &&
4011                     mem->sig_type == wire->sig_type) {
4012                         /* Same block structure */
4013                         basic->bsf_size_sbs |= 1 << 4;
4014                         if (mem->sig.dif.bg_type == wire->sig.dif.bg_type)
4015                                 basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK;
4016                         if (mem->sig.dif.app_tag == wire->sig.dif.app_tag)
4017                                 basic->wire.copy_byte_mask |= MLX5_CPY_APP_MASK;
4018                         if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag)
4019                                 basic->wire.copy_byte_mask |= MLX5_CPY_REF_MASK;
4020                 } else
4021                         basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval);
4022
4023                 basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx);
4024                 mlx5_fill_inl_bsf(wire, &bsf->w_inl);
4025                 break;
4026         default:
4027                 return -EINVAL;
4028         }
4029
4030         return 0;
4031 }
4032
4033 static int set_sig_data_segment(struct ib_sig_handover_wr *wr,
4034                                 struct mlx5_ib_qp *qp, void **seg, int *size)
4035 {
4036         struct ib_sig_attrs *sig_attrs = wr->sig_attrs;
4037         struct ib_mr *sig_mr = wr->sig_mr;
4038         struct mlx5_bsf *bsf;
4039         u32 data_len = wr->wr.sg_list->length;
4040         u32 data_key = wr->wr.sg_list->lkey;
4041         u64 data_va = wr->wr.sg_list->addr;
4042         int ret;
4043         int wqe_size;
4044
4045         if (!wr->prot ||
4046             (data_key == wr->prot->lkey &&
4047              data_va == wr->prot->addr &&
4048              data_len == wr->prot->length)) {
4049                 /**
4050                  * Source domain doesn't contain signature information
4051                  * or data and protection are interleaved in memory.
4052                  * So need construct:
4053                  *                  ------------------
4054                  *                 |     data_klm     |
4055                  *                  ------------------
4056                  *                 |       BSF        |
4057                  *                  ------------------
4058                  **/
4059                 struct mlx5_klm *data_klm = *seg;
4060
4061                 data_klm->bcount = cpu_to_be32(data_len);
4062                 data_klm->key = cpu_to_be32(data_key);
4063                 data_klm->va = cpu_to_be64(data_va);
4064                 wqe_size = ALIGN(sizeof(*data_klm), 64);
4065         } else {
4066                 /**
4067                  * Source domain contains signature information
4068                  * So need construct a strided block format:
4069                  *               ---------------------------
4070                  *              |     stride_block_ctrl     |
4071                  *               ---------------------------
4072                  *              |          data_klm         |
4073                  *               ---------------------------
4074                  *              |          prot_klm         |
4075                  *               ---------------------------
4076                  *              |             BSF           |
4077                  *               ---------------------------
4078                  **/
4079                 struct mlx5_stride_block_ctrl_seg *sblock_ctrl;
4080                 struct mlx5_stride_block_entry *data_sentry;
4081                 struct mlx5_stride_block_entry *prot_sentry;
4082                 u32 prot_key = wr->prot->lkey;
4083                 u64 prot_va = wr->prot->addr;
4084                 u16 block_size = sig_attrs->mem.sig.dif.pi_interval;
4085                 int prot_size;
4086
4087                 sblock_ctrl = *seg;
4088                 data_sentry = (void *)sblock_ctrl + sizeof(*sblock_ctrl);
4089                 prot_sentry = (void *)data_sentry + sizeof(*data_sentry);
4090
4091                 prot_size = prot_field_size(sig_attrs->mem.sig_type);
4092                 if (!prot_size) {
4093                         pr_err("Bad block size given: %u\n", block_size);
4094                         return -EINVAL;
4095                 }
4096                 sblock_ctrl->bcount_per_cycle = cpu_to_be32(block_size +
4097                                                             prot_size);
4098                 sblock_ctrl->op = cpu_to_be32(MLX5_STRIDE_BLOCK_OP);
4099                 sblock_ctrl->repeat_count = cpu_to_be32(data_len / block_size);
4100                 sblock_ctrl->num_entries = cpu_to_be16(2);
4101
4102                 data_sentry->bcount = cpu_to_be16(block_size);
4103                 data_sentry->key = cpu_to_be32(data_key);
4104                 data_sentry->va = cpu_to_be64(data_va);
4105                 data_sentry->stride = cpu_to_be16(block_size);
4106
4107                 prot_sentry->bcount = cpu_to_be16(prot_size);
4108                 prot_sentry->key = cpu_to_be32(prot_key);
4109                 prot_sentry->va = cpu_to_be64(prot_va);
4110                 prot_sentry->stride = cpu_to_be16(prot_size);
4111
4112                 wqe_size = ALIGN(sizeof(*sblock_ctrl) + sizeof(*data_sentry) +
4113                                  sizeof(*prot_sentry), 64);
4114         }
4115
4116         *seg += wqe_size;
4117         *size += wqe_size / 16;
4118         if (unlikely((*seg == qp->sq.qend)))
4119                 *seg = mlx5_get_send_wqe(qp, 0);
4120
4121         bsf = *seg;
4122         ret = mlx5_set_bsf(sig_mr, sig_attrs, bsf, data_len);
4123         if (ret)
4124                 return -EINVAL;
4125
4126         *seg += sizeof(*bsf);
4127         *size += sizeof(*bsf) / 16;
4128         if (unlikely((*seg == qp->sq.qend)))
4129                 *seg = mlx5_get_send_wqe(qp, 0);
4130
4131         return 0;
4132 }
4133
4134 static void set_sig_mkey_segment(struct mlx5_mkey_seg *seg,
4135                                  struct ib_sig_handover_wr *wr, u32 size,
4136                                  u32 length, u32 pdn)
4137 {
4138         struct ib_mr *sig_mr = wr->sig_mr;
4139         u32 sig_key = sig_mr->rkey;
4140         u8 sigerr = to_mmr(sig_mr)->sig->sigerr_count & 1;
4141
4142         memset(seg, 0, sizeof(*seg));
4143
4144         seg->flags = get_umr_flags(wr->access_flags) |
4145                                    MLX5_MKC_ACCESS_MODE_KLMS;
4146         seg->qpn_mkey7_0 = cpu_to_be32((sig_key & 0xff) | 0xffffff00);
4147         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL | sigerr << 26 |
4148                                     MLX5_MKEY_BSF_EN | pdn);
4149         seg->len = cpu_to_be64(length);
4150         seg->xlt_oct_size = cpu_to_be32(get_xlt_octo(size));
4151         seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
4152 }
4153
4154 static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
4155                                 u32 size)
4156 {
4157         memset(umr, 0, sizeof(*umr));
4158
4159         umr->flags = MLX5_FLAGS_INLINE | MLX5_FLAGS_CHECK_FREE;
4160         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
4161         umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);
4162         umr->mkey_mask = sig_mkey_mask();
4163 }
4164
4165
4166 static int set_sig_umr_wr(struct ib_send_wr *send_wr, struct mlx5_ib_qp *qp,
4167                           void **seg, int *size)
4168 {
4169         struct ib_sig_handover_wr *wr = sig_handover_wr(send_wr);
4170         struct mlx5_ib_mr *sig_mr = to_mmr(wr->sig_mr);
4171         u32 pdn = get_pd(qp)->pdn;
4172         u32 xlt_size;
4173         int region_len, ret;
4174
4175         if (unlikely(wr->wr.num_sge != 1) ||
4176             unlikely(wr->access_flags & IB_ACCESS_REMOTE_ATOMIC) ||
4177             unlikely(!sig_mr->sig) || unlikely(!qp->signature_en) ||
4178             unlikely(!sig_mr->sig->sig_status_checked))
4179                 return -EINVAL;
4180
4181         /* length of the protected region, data + protection */
4182         region_len = wr->wr.sg_list->length;
4183         if (wr->prot &&
4184             (wr->prot->lkey != wr->wr.sg_list->lkey  ||
4185              wr->prot->addr != wr->wr.sg_list->addr  ||
4186              wr->prot->length != wr->wr.sg_list->length))
4187                 region_len += wr->prot->length;
4188
4189         /**
4190          * KLM octoword size - if protection was provided
4191          * then we use strided block format (3 octowords),
4192          * else we use single KLM (1 octoword)
4193          **/
4194         xlt_size = wr->prot ? 0x30 : sizeof(struct mlx5_klm);
4195
4196         set_sig_umr_segment(*seg, xlt_size);
4197         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4198         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4199         if (unlikely((*seg == qp->sq.qend)))
4200                 *seg = mlx5_get_send_wqe(qp, 0);
4201
4202         set_sig_mkey_segment(*seg, wr, xlt_size, region_len, pdn);
4203         *seg += sizeof(struct mlx5_mkey_seg);
4204         *size += sizeof(struct mlx5_mkey_seg) / 16;
4205         if (unlikely((*seg == qp->sq.qend)))
4206                 *seg = mlx5_get_send_wqe(qp, 0);
4207
4208         ret = set_sig_data_segment(wr, qp, seg, size);
4209         if (ret)
4210                 return ret;
4211
4212         sig_mr->sig->sig_status_checked = false;
4213         return 0;
4214 }
4215
4216 static int set_psv_wr(struct ib_sig_domain *domain,
4217                       u32 psv_idx, void **seg, int *size)
4218 {
4219         struct mlx5_seg_set_psv *psv_seg = *seg;
4220
4221         memset(psv_seg, 0, sizeof(*psv_seg));
4222         psv_seg->psv_num = cpu_to_be32(psv_idx);
4223         switch (domain->sig_type) {
4224         case IB_SIG_TYPE_NONE:
4225                 break;
4226         case IB_SIG_TYPE_T10_DIF:
4227                 psv_seg->transient_sig = cpu_to_be32(domain->sig.dif.bg << 16 |
4228                                                      domain->sig.dif.app_tag);
4229                 psv_seg->ref_tag = cpu_to_be32(domain->sig.dif.ref_tag);
4230                 break;
4231         default:
4232                 pr_err("Bad signature type (%d) is given.\n",
4233                        domain->sig_type);
4234                 return -EINVAL;
4235         }
4236
4237         *seg += sizeof(*psv_seg);
4238         *size += sizeof(*psv_seg) / 16;
4239
4240         return 0;
4241 }
4242
4243 static int set_reg_wr(struct mlx5_ib_qp *qp,
4244                       struct ib_reg_wr *wr,
4245                       void **seg, int *size)
4246 {
4247         struct mlx5_ib_mr *mr = to_mmr(wr->mr);
4248         struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
4249         int mr_list_size = mr->ndescs * mr->desc_size;
4250         bool umr_inline = mr_list_size <= MLX5_IB_SQ_UMR_INLINE_THRESHOLD;
4251
4252         if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
4253                 mlx5_ib_warn(to_mdev(qp->ibqp.device),
4254                              "Invalid IB_SEND_INLINE send flag\n");
4255                 return -EINVAL;
4256         }
4257
4258         set_reg_umr_seg(*seg, mr, umr_inline);
4259         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4260         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4261         if (unlikely((*seg == qp->sq.qend)))
4262                 *seg = mlx5_get_send_wqe(qp, 0);
4263
4264         set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
4265         *seg += sizeof(struct mlx5_mkey_seg);
4266         *size += sizeof(struct mlx5_mkey_seg) / 16;
4267         if (unlikely((*seg == qp->sq.qend)))
4268                 *seg = mlx5_get_send_wqe(qp, 0);
4269
4270         if (umr_inline) {
4271                 set_reg_umr_inline_seg(*seg, qp, mr, mr_list_size);
4272                 *size += get_xlt_octo(mr_list_size);
4273         } else {
4274                 set_reg_data_seg(*seg, mr, pd);
4275                 *seg += sizeof(struct mlx5_wqe_data_seg);
4276                 *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
4277         }
4278         return 0;
4279 }
4280
4281 static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size)
4282 {
4283         set_linv_umr_seg(*seg);
4284         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4285         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4286         if (unlikely((*seg == qp->sq.qend)))
4287                 *seg = mlx5_get_send_wqe(qp, 0);
4288         set_linv_mkey_seg(*seg);
4289         *seg += sizeof(struct mlx5_mkey_seg);
4290         *size += sizeof(struct mlx5_mkey_seg) / 16;
4291         if (unlikely((*seg == qp->sq.qend)))
4292                 *seg = mlx5_get_send_wqe(qp, 0);
4293 }
4294
4295 static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16)
4296 {
4297         __be32 *p = NULL;
4298         int tidx = idx;
4299         int i, j;
4300
4301         pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx));
4302         for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
4303                 if ((i & 0xf) == 0) {
4304                         void *buf = mlx5_get_send_wqe(qp, tidx);
4305                         tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1);
4306                         p = buf;
4307                         j = 0;
4308                 }
4309                 pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
4310                          be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
4311                          be32_to_cpu(p[j + 3]));
4312         }
4313 }
4314
4315 static int begin_wqe(struct mlx5_ib_qp *qp, void **seg,
4316                      struct mlx5_wqe_ctrl_seg **ctrl,
4317                      struct ib_send_wr *wr, unsigned *idx,
4318                      int *size, int nreq)
4319 {
4320         if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)))
4321                 return -ENOMEM;
4322
4323         *idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
4324         *seg = mlx5_get_send_wqe(qp, *idx);
4325         *ctrl = *seg;
4326         *(uint32_t *)(*seg + 8) = 0;
4327         (*ctrl)->imm = send_ieth(wr);
4328         (*ctrl)->fm_ce_se = qp->sq_signal_bits |
4329                 (wr->send_flags & IB_SEND_SIGNALED ?
4330                  MLX5_WQE_CTRL_CQ_UPDATE : 0) |
4331                 (wr->send_flags & IB_SEND_SOLICITED ?
4332                  MLX5_WQE_CTRL_SOLICITED : 0);
4333
4334         *seg += sizeof(**ctrl);
4335         *size = sizeof(**ctrl) / 16;
4336
4337         return 0;
4338 }
4339
4340 static void finish_wqe(struct mlx5_ib_qp *qp,
4341                        struct mlx5_wqe_ctrl_seg *ctrl,
4342                        u8 size, unsigned idx, u64 wr_id,
4343                        int nreq, u8 fence, u32 mlx5_opcode)
4344 {
4345         u8 opmod = 0;
4346
4347         ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
4348                                              mlx5_opcode | ((u32)opmod << 24));
4349         ctrl->qpn_ds = cpu_to_be32(size | (qp->trans_qp.base.mqp.qpn << 8));
4350         ctrl->fm_ce_se |= fence;
4351         if (unlikely(qp->wq_sig))
4352                 ctrl->signature = wq_sig(ctrl);
4353
4354         qp->sq.wrid[idx] = wr_id;
4355         qp->sq.w_list[idx].opcode = mlx5_opcode;
4356         qp->sq.wqe_head[idx] = qp->sq.head + nreq;
4357         qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
4358         qp->sq.w_list[idx].next = qp->sq.cur_post;
4359 }
4360
4361
4362 int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
4363                       struct ib_send_wr **bad_wr)
4364 {
4365         struct mlx5_wqe_ctrl_seg *ctrl = NULL;  /* compiler warning */
4366         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4367         struct mlx5_core_dev *mdev = dev->mdev;
4368         struct mlx5_ib_qp *qp;
4369         struct mlx5_ib_mr *mr;
4370         struct mlx5_wqe_data_seg *dpseg;
4371         struct mlx5_wqe_xrc_seg *xrc;
4372         struct mlx5_bf *bf;
4373         int uninitialized_var(size);
4374         void *qend;
4375         unsigned long flags;
4376         unsigned idx;
4377         int err = 0;
4378         int num_sge;
4379         void *seg;
4380         int nreq;
4381         int i;
4382         u8 next_fence = 0;
4383         u8 fence;
4384
4385         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4386                 return mlx5_ib_gsi_post_send(ibqp, wr, bad_wr);
4387
4388         qp = to_mqp(ibqp);
4389         bf = &qp->bf;
4390         qend = qp->sq.qend;
4391
4392         spin_lock_irqsave(&qp->sq.lock, flags);
4393
4394         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
4395                 err = -EIO;
4396                 *bad_wr = wr;
4397                 nreq = 0;
4398                 goto out;
4399         }
4400
4401         for (nreq = 0; wr; nreq++, wr = wr->next) {
4402                 if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
4403                         mlx5_ib_warn(dev, "\n");
4404                         err = -EINVAL;
4405                         *bad_wr = wr;
4406                         goto out;
4407                 }
4408
4409                 num_sge = wr->num_sge;
4410                 if (unlikely(num_sge > qp->sq.max_gs)) {
4411                         mlx5_ib_warn(dev, "\n");
4412                         err = -EINVAL;
4413                         *bad_wr = wr;
4414                         goto out;
4415                 }
4416
4417                 err = begin_wqe(qp, &seg, &ctrl, wr, &idx, &size, nreq);
4418                 if (err) {
4419                         mlx5_ib_warn(dev, "\n");
4420                         err = -ENOMEM;
4421                         *bad_wr = wr;
4422                         goto out;
4423                 }
4424
4425                 if (wr->opcode == IB_WR_LOCAL_INV ||
4426                     wr->opcode == IB_WR_REG_MR) {
4427                         fence = dev->umr_fence;
4428                         next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
4429                 } else if (wr->send_flags & IB_SEND_FENCE) {
4430                         if (qp->next_fence)
4431                                 fence = MLX5_FENCE_MODE_SMALL_AND_FENCE;
4432                         else
4433                                 fence = MLX5_FENCE_MODE_FENCE;
4434                 } else {
4435                         fence = qp->next_fence;
4436                 }
4437
4438                 switch (ibqp->qp_type) {
4439                 case IB_QPT_XRC_INI:
4440                         xrc = seg;
4441                         seg += sizeof(*xrc);
4442                         size += sizeof(*xrc) / 16;
4443                         /* fall through */
4444                 case IB_QPT_RC:
4445                         switch (wr->opcode) {
4446                         case IB_WR_RDMA_READ:
4447                         case IB_WR_RDMA_WRITE:
4448                         case IB_WR_RDMA_WRITE_WITH_IMM:
4449                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
4450                                               rdma_wr(wr)->rkey);
4451                                 seg += sizeof(struct mlx5_wqe_raddr_seg);
4452                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
4453                                 break;
4454
4455                         case IB_WR_ATOMIC_CMP_AND_SWP:
4456                         case IB_WR_ATOMIC_FETCH_AND_ADD:
4457                         case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
4458                                 mlx5_ib_warn(dev, "Atomic operations are not supported yet\n");
4459                                 err = -ENOSYS;
4460                                 *bad_wr = wr;
4461                                 goto out;
4462
4463                         case IB_WR_LOCAL_INV:
4464                                 qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
4465                                 ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
4466                                 set_linv_wr(qp, &seg, &size);
4467                                 num_sge = 0;
4468                                 break;
4469
4470                         case IB_WR_REG_MR:
4471                                 qp->sq.wr_data[idx] = IB_WR_REG_MR;
4472                                 ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
4473                                 err = set_reg_wr(qp, reg_wr(wr), &seg, &size);
4474                                 if (err) {
4475                                         *bad_wr = wr;
4476                                         goto out;
4477                                 }
4478                                 num_sge = 0;
4479                                 break;
4480
4481                         case IB_WR_REG_SIG_MR:
4482                                 qp->sq.wr_data[idx] = IB_WR_REG_SIG_MR;
4483                                 mr = to_mmr(sig_handover_wr(wr)->sig_mr);
4484
4485                                 ctrl->imm = cpu_to_be32(mr->ibmr.rkey);
4486                                 err = set_sig_umr_wr(wr, qp, &seg, &size);
4487                                 if (err) {
4488                                         mlx5_ib_warn(dev, "\n");
4489                                         *bad_wr = wr;
4490                                         goto out;
4491                                 }
4492
4493                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id, nreq,
4494                                            fence, MLX5_OPCODE_UMR);
4495                                 /*
4496                                  * SET_PSV WQEs are not signaled and solicited
4497                                  * on error
4498                                  */
4499                                 wr->send_flags &= ~IB_SEND_SIGNALED;
4500                                 wr->send_flags |= IB_SEND_SOLICITED;
4501                                 err = begin_wqe(qp, &seg, &ctrl, wr,
4502                                                 &idx, &size, nreq);
4503                                 if (err) {
4504                                         mlx5_ib_warn(dev, "\n");
4505                                         err = -ENOMEM;
4506                                         *bad_wr = wr;
4507                                         goto out;
4508                                 }
4509
4510                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->mem,
4511                                                  mr->sig->psv_memory.psv_idx, &seg,
4512                                                  &size);
4513                                 if (err) {
4514                                         mlx5_ib_warn(dev, "\n");
4515                                         *bad_wr = wr;
4516                                         goto out;
4517                                 }
4518
4519                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id, nreq,
4520                                            fence, MLX5_OPCODE_SET_PSV);
4521                                 err = begin_wqe(qp, &seg, &ctrl, wr,
4522                                                 &idx, &size, nreq);
4523                                 if (err) {
4524                                         mlx5_ib_warn(dev, "\n");
4525                                         err = -ENOMEM;
4526                                         *bad_wr = wr;
4527                                         goto out;
4528                                 }
4529
4530                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->wire,
4531                                                  mr->sig->psv_wire.psv_idx, &seg,
4532                                                  &size);
4533                                 if (err) {
4534                                         mlx5_ib_warn(dev, "\n");
4535                                         *bad_wr = wr;
4536                                         goto out;
4537                                 }
4538
4539                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id, nreq,
4540                                            fence, MLX5_OPCODE_SET_PSV);
4541                                 qp->next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
4542                                 num_sge = 0;
4543                                 goto skip_psv;
4544
4545                         default:
4546                                 break;
4547                         }
4548                         break;
4549
4550                 case IB_QPT_UC:
4551                         switch (wr->opcode) {
4552                         case IB_WR_RDMA_WRITE:
4553                         case IB_WR_RDMA_WRITE_WITH_IMM:
4554                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
4555                                               rdma_wr(wr)->rkey);
4556                                 seg  += sizeof(struct mlx5_wqe_raddr_seg);
4557                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
4558                                 break;
4559
4560                         default:
4561                                 break;
4562                         }
4563                         break;
4564
4565                 case IB_QPT_SMI:
4566                         if (unlikely(!mdev->port_caps[qp->port - 1].has_smi)) {
4567                                 mlx5_ib_warn(dev, "Send SMP MADs is not allowed\n");
4568                                 err = -EPERM;
4569                                 *bad_wr = wr;
4570                                 goto out;
4571                         }
4572                         /* fall through */
4573                 case MLX5_IB_QPT_HW_GSI:
4574                         set_datagram_seg(seg, wr);
4575                         seg += sizeof(struct mlx5_wqe_datagram_seg);
4576                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
4577                         if (unlikely((seg == qend)))
4578                                 seg = mlx5_get_send_wqe(qp, 0);
4579                         break;
4580                 case IB_QPT_UD:
4581                         set_datagram_seg(seg, wr);
4582                         seg += sizeof(struct mlx5_wqe_datagram_seg);
4583                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
4584
4585                         if (unlikely((seg == qend)))
4586                                 seg = mlx5_get_send_wqe(qp, 0);
4587
4588                         /* handle qp that supports ud offload */
4589                         if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) {
4590                                 struct mlx5_wqe_eth_pad *pad;
4591
4592                                 pad = seg;
4593                                 memset(pad, 0, sizeof(struct mlx5_wqe_eth_pad));
4594                                 seg += sizeof(struct mlx5_wqe_eth_pad);
4595                                 size += sizeof(struct mlx5_wqe_eth_pad) / 16;
4596
4597                                 seg = set_eth_seg(seg, wr, qend, qp, &size);
4598
4599                                 if (unlikely((seg == qend)))
4600                                         seg = mlx5_get_send_wqe(qp, 0);
4601                         }
4602                         break;
4603                 case MLX5_IB_QPT_REG_UMR:
4604                         if (wr->opcode != MLX5_IB_WR_UMR) {
4605                                 err = -EINVAL;
4606                                 mlx5_ib_warn(dev, "bad opcode\n");
4607                                 goto out;
4608                         }
4609                         qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
4610                         ctrl->imm = cpu_to_be32(umr_wr(wr)->mkey);
4611                         err = set_reg_umr_segment(dev, seg, wr, !!(MLX5_CAP_GEN(mdev, atomic)));
4612                         if (unlikely(err))
4613                                 goto out;
4614                         seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4615                         size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4616                         if (unlikely((seg == qend)))
4617                                 seg = mlx5_get_send_wqe(qp, 0);
4618                         set_reg_mkey_segment(seg, wr);
4619                         seg += sizeof(struct mlx5_mkey_seg);
4620                         size += sizeof(struct mlx5_mkey_seg) / 16;
4621                         if (unlikely((seg == qend)))
4622                                 seg = mlx5_get_send_wqe(qp, 0);
4623                         break;
4624
4625                 default:
4626                         break;
4627                 }
4628
4629                 if (wr->send_flags & IB_SEND_INLINE && num_sge) {
4630                         int uninitialized_var(sz);
4631
4632                         err = set_data_inl_seg(qp, wr, seg, &sz);
4633                         if (unlikely(err)) {
4634                                 mlx5_ib_warn(dev, "\n");
4635                                 *bad_wr = wr;
4636                                 goto out;
4637                         }
4638                         size += sz;
4639                 } else {
4640                         dpseg = seg;
4641                         for (i = 0; i < num_sge; i++) {
4642                                 if (unlikely(dpseg == qend)) {
4643                                         seg = mlx5_get_send_wqe(qp, 0);
4644                                         dpseg = seg;
4645                                 }
4646                                 if (likely(wr->sg_list[i].length)) {
4647                                         set_data_ptr_seg(dpseg, wr->sg_list + i);
4648                                         size += sizeof(struct mlx5_wqe_data_seg) / 16;
4649                                         dpseg++;
4650                                 }
4651                         }
4652                 }
4653
4654                 qp->next_fence = next_fence;
4655                 finish_wqe(qp, ctrl, size, idx, wr->wr_id, nreq, fence,
4656                            mlx5_ib_opcode[wr->opcode]);
4657 skip_psv:
4658                 if (0)
4659                         dump_wqe(qp, idx, size);
4660         }
4661
4662 out:
4663         if (likely(nreq)) {
4664                 qp->sq.head += nreq;
4665
4666                 /* Make sure that descriptors are written before
4667                  * updating doorbell record and ringing the doorbell
4668                  */
4669                 wmb();
4670
4671                 qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
4672
4673                 /* Make sure doorbell record is visible to the HCA before
4674                  * we hit doorbell */
4675                 wmb();
4676
4677                 /* currently we support only regular doorbells */
4678                 mlx5_write64((__be32 *)ctrl, bf->bfreg->map + bf->offset, NULL);
4679                 /* Make sure doorbells don't leak out of SQ spinlock
4680                  * and reach the HCA out of order.
4681                  */
4682                 mmiowb();
4683                 bf->offset ^= bf->buf_size;
4684         }
4685
4686         spin_unlock_irqrestore(&qp->sq.lock, flags);
4687
4688         return err;
4689 }
4690
4691 static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
4692 {
4693         sig->signature = calc_sig(sig, size);
4694 }
4695
4696 int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
4697                       struct ib_recv_wr **bad_wr)
4698 {
4699         struct mlx5_ib_qp *qp = to_mqp(ibqp);
4700         struct mlx5_wqe_data_seg *scat;
4701         struct mlx5_rwqe_sig *sig;
4702         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4703         struct mlx5_core_dev *mdev = dev->mdev;
4704         unsigned long flags;
4705         int err = 0;
4706         int nreq;
4707         int ind;
4708         int i;
4709
4710         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4711                 return mlx5_ib_gsi_post_recv(ibqp, wr, bad_wr);
4712
4713         spin_lock_irqsave(&qp->rq.lock, flags);
4714
4715         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
4716                 err = -EIO;
4717                 *bad_wr = wr;
4718                 nreq = 0;
4719                 goto out;
4720         }
4721
4722         ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
4723
4724         for (nreq = 0; wr; nreq++, wr = wr->next) {
4725                 if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
4726                         err = -ENOMEM;
4727                         *bad_wr = wr;
4728                         goto out;
4729                 }
4730
4731                 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
4732                         err = -EINVAL;
4733                         *bad_wr = wr;
4734                         goto out;
4735                 }
4736
4737                 scat = get_recv_wqe(qp, ind);
4738                 if (qp->wq_sig)
4739                         scat++;
4740
4741                 for (i = 0; i < wr->num_sge; i++)
4742                         set_data_ptr_seg(scat + i, wr->sg_list + i);
4743
4744                 if (i < qp->rq.max_gs) {
4745                         scat[i].byte_count = 0;
4746                         scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
4747                         scat[i].addr       = 0;
4748                 }
4749
4750                 if (qp->wq_sig) {
4751                         sig = (struct mlx5_rwqe_sig *)scat;
4752                         set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
4753                 }
4754
4755                 qp->rq.wrid[ind] = wr->wr_id;
4756
4757                 ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
4758         }
4759
4760 out:
4761         if (likely(nreq)) {
4762                 qp->rq.head += nreq;
4763
4764                 /* Make sure that descriptors are written before
4765                  * doorbell record.
4766                  */
4767                 wmb();
4768
4769                 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
4770         }
4771
4772         spin_unlock_irqrestore(&qp->rq.lock, flags);
4773
4774         return err;
4775 }
4776
4777 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
4778 {
4779         switch (mlx5_state) {
4780         case MLX5_QP_STATE_RST:      return IB_QPS_RESET;
4781         case MLX5_QP_STATE_INIT:     return IB_QPS_INIT;
4782         case MLX5_QP_STATE_RTR:      return IB_QPS_RTR;
4783         case MLX5_QP_STATE_RTS:      return IB_QPS_RTS;
4784         case MLX5_QP_STATE_SQ_DRAINING:
4785         case MLX5_QP_STATE_SQD:      return IB_QPS_SQD;
4786         case MLX5_QP_STATE_SQER:     return IB_QPS_SQE;
4787         case MLX5_QP_STATE_ERR:      return IB_QPS_ERR;
4788         default:                     return -1;
4789         }
4790 }
4791
4792 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
4793 {
4794         switch (mlx5_mig_state) {
4795         case MLX5_QP_PM_ARMED:          return IB_MIG_ARMED;
4796         case MLX5_QP_PM_REARM:          return IB_MIG_REARM;
4797         case MLX5_QP_PM_MIGRATED:       return IB_MIG_MIGRATED;
4798         default: return -1;
4799         }
4800 }
4801
4802 static int to_ib_qp_access_flags(int mlx5_flags)
4803 {
4804         int ib_flags = 0;
4805
4806         if (mlx5_flags & MLX5_QP_BIT_RRE)
4807                 ib_flags |= IB_ACCESS_REMOTE_READ;
4808         if (mlx5_flags & MLX5_QP_BIT_RWE)
4809                 ib_flags |= IB_ACCESS_REMOTE_WRITE;
4810         if (mlx5_flags & MLX5_QP_BIT_RAE)
4811                 ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
4812
4813         return ib_flags;
4814 }
4815
4816 static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
4817                             struct rdma_ah_attr *ah_attr,
4818                             struct mlx5_qp_path *path)
4819 {
4820
4821         memset(ah_attr, 0, sizeof(*ah_attr));
4822
4823         if (!path->port || path->port > ibdev->num_ports)
4824                 return;
4825
4826         ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, path->port);
4827
4828         rdma_ah_set_port_num(ah_attr, path->port);
4829         rdma_ah_set_sl(ah_attr, path->dci_cfi_prio_sl & 0xf);
4830
4831         rdma_ah_set_dlid(ah_attr, be16_to_cpu(path->rlid));
4832         rdma_ah_set_path_bits(ah_attr, path->grh_mlid & 0x7f);
4833         rdma_ah_set_static_rate(ah_attr,
4834                                 path->static_rate ? path->static_rate - 5 : 0);
4835         if (path->grh_mlid & (1 << 7)) {
4836                 u32 tc_fl = be32_to_cpu(path->tclass_flowlabel);
4837
4838                 rdma_ah_set_grh(ah_attr, NULL,
4839                                 tc_fl & 0xfffff,
4840                                 path->mgid_index,
4841                                 path->hop_limit,
4842                                 (tc_fl >> 20) & 0xff);
4843                 rdma_ah_set_dgid_raw(ah_attr, path->rgid);
4844         }
4845 }
4846
4847 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
4848                                         struct mlx5_ib_sq *sq,
4849                                         u8 *sq_state)
4850 {
4851         int err;
4852
4853         err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state);
4854         if (err)
4855                 goto out;
4856         sq->state = *sq_state;
4857
4858 out:
4859         return err;
4860 }
4861
4862 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
4863                                         struct mlx5_ib_rq *rq,
4864                                         u8 *rq_state)
4865 {
4866         void *out;
4867         void *rqc;
4868         int inlen;
4869         int err;
4870
4871         inlen = MLX5_ST_SZ_BYTES(query_rq_out);
4872         out = kvzalloc(inlen, GFP_KERNEL);
4873         if (!out)
4874                 return -ENOMEM;
4875
4876         err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
4877         if (err)
4878                 goto out;
4879
4880         rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
4881         *rq_state = MLX5_GET(rqc, rqc, state);
4882         rq->state = *rq_state;
4883
4884 out:
4885         kvfree(out);
4886         return err;
4887 }
4888
4889 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
4890                                   struct mlx5_ib_qp *qp, u8 *qp_state)
4891 {
4892         static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
4893                 [MLX5_RQC_STATE_RST] = {
4894                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
4895                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
4896                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE_BAD,
4897                         [MLX5_SQ_STATE_NA]      = IB_QPS_RESET,
4898                 },
4899                 [MLX5_RQC_STATE_RDY] = {
4900                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
4901                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
4902                         [MLX5_SQC_STATE_ERR]    = IB_QPS_SQE,
4903                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE,
4904                 },
4905                 [MLX5_RQC_STATE_ERR] = {
4906                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
4907                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
4908                         [MLX5_SQC_STATE_ERR]    = IB_QPS_ERR,
4909                         [MLX5_SQ_STATE_NA]      = IB_QPS_ERR,
4910                 },
4911                 [MLX5_RQ_STATE_NA] = {
4912                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
4913                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
4914                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE,
4915                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE_BAD,
4916                 },
4917         };
4918
4919         *qp_state = sqrq_trans[rq_state][sq_state];
4920
4921         if (*qp_state == MLX5_QP_STATE_BAD) {
4922                 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
4923                      qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
4924                      qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
4925                 return -EINVAL;
4926         }
4927
4928         if (*qp_state == MLX5_QP_STATE)
4929                 *qp_state = qp->state;
4930
4931         return 0;
4932 }
4933
4934 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
4935                                      struct mlx5_ib_qp *qp,
4936                                      u8 *raw_packet_qp_state)
4937 {
4938         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
4939         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
4940         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
4941         int err;
4942         u8 sq_state = MLX5_SQ_STATE_NA;
4943         u8 rq_state = MLX5_RQ_STATE_NA;
4944
4945         if (qp->sq.wqe_cnt) {
4946                 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
4947                 if (err)
4948                         return err;
4949         }
4950
4951         if (qp->rq.wqe_cnt) {
4952                 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
4953                 if (err)
4954                         return err;
4955         }
4956
4957         return sqrq_state_to_qp_state(sq_state, rq_state, qp,
4958                                       raw_packet_qp_state);
4959 }
4960
4961 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
4962                          struct ib_qp_attr *qp_attr)
4963 {
4964         int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
4965         struct mlx5_qp_context *context;
4966         int mlx5_state;
4967         u32 *outb;
4968         int err = 0;
4969
4970         outb = kzalloc(outlen, GFP_KERNEL);
4971         if (!outb)
4972                 return -ENOMEM;
4973
4974         err = mlx5_core_qp_query(dev->mdev, &qp->trans_qp.base.mqp, outb,
4975                                  outlen);
4976         if (err)
4977                 goto out;
4978
4979         /* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
4980         context = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, outb, qpc);
4981
4982         mlx5_state = be32_to_cpu(context->flags) >> 28;
4983
4984         qp->state                    = to_ib_qp_state(mlx5_state);
4985         qp_attr->path_mtu            = context->mtu_msgmax >> 5;
4986         qp_attr->path_mig_state      =
4987                 to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
4988         qp_attr->qkey                = be32_to_cpu(context->qkey);
4989         qp_attr->rq_psn              = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
4990         qp_attr->sq_psn              = be32_to_cpu(context->next_send_psn) & 0xffffff;
4991         qp_attr->dest_qp_num         = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
4992         qp_attr->qp_access_flags     =
4993                 to_ib_qp_access_flags(be32_to_cpu(context->params2));
4994
4995         if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
4996                 to_rdma_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
4997                 to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
4998                 qp_attr->alt_pkey_index =
4999                         be16_to_cpu(context->alt_path.pkey_index);
5000                 qp_attr->alt_port_num   =
5001                         rdma_ah_get_port_num(&qp_attr->alt_ah_attr);
5002         }
5003
5004         qp_attr->pkey_index = be16_to_cpu(context->pri_path.pkey_index);
5005         qp_attr->port_num = context->pri_path.port;
5006
5007         /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
5008         qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
5009
5010         qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
5011
5012         qp_attr->max_dest_rd_atomic =
5013                 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
5014         qp_attr->min_rnr_timer      =
5015                 (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
5016         qp_attr->timeout            = context->pri_path.ackto_lt >> 3;
5017         qp_attr->retry_cnt          = (be32_to_cpu(context->params1) >> 16) & 0x7;
5018         qp_attr->rnr_retry          = (be32_to_cpu(context->params1) >> 13) & 0x7;
5019         qp_attr->alt_timeout        = context->alt_path.ackto_lt >> 3;
5020
5021 out:
5022         kfree(outb);
5023         return err;
5024 }
5025
5026 static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp,
5027                                 struct ib_qp_attr *qp_attr, int qp_attr_mask,
5028                                 struct ib_qp_init_attr *qp_init_attr)
5029 {
5030         struct mlx5_core_dct    *dct = &mqp->dct.mdct;
5031         u32 *out;
5032         u32 access_flags = 0;
5033         int outlen = MLX5_ST_SZ_BYTES(query_dct_out);
5034         void *dctc;
5035         int err;
5036         int supported_mask = IB_QP_STATE |
5037                              IB_QP_ACCESS_FLAGS |
5038                              IB_QP_PORT |
5039                              IB_QP_MIN_RNR_TIMER |
5040                              IB_QP_AV |
5041                              IB_QP_PATH_MTU |
5042                              IB_QP_PKEY_INDEX;
5043
5044         if (qp_attr_mask & ~supported_mask)
5045                 return -EINVAL;
5046         if (mqp->state != IB_QPS_RTR)
5047                 return -EINVAL;
5048
5049         out = kzalloc(outlen, GFP_KERNEL);
5050         if (!out)
5051                 return -ENOMEM;
5052
5053         err = mlx5_core_dct_query(dev->mdev, dct, out, outlen);
5054         if (err)
5055                 goto out;
5056
5057         dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry);
5058
5059         if (qp_attr_mask & IB_QP_STATE)
5060                 qp_attr->qp_state = IB_QPS_RTR;
5061
5062         if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
5063                 if (MLX5_GET(dctc, dctc, rre))
5064                         access_flags |= IB_ACCESS_REMOTE_READ;
5065                 if (MLX5_GET(dctc, dctc, rwe))
5066                         access_flags |= IB_ACCESS_REMOTE_WRITE;
5067                 if (MLX5_GET(dctc, dctc, rae))
5068                         access_flags |= IB_ACCESS_REMOTE_ATOMIC;
5069                 qp_attr->qp_access_flags = access_flags;
5070         }
5071
5072         if (qp_attr_mask & IB_QP_PORT)
5073                 qp_attr->port_num = MLX5_GET(dctc, dctc, port);
5074         if (qp_attr_mask & IB_QP_MIN_RNR_TIMER)
5075                 qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak);
5076         if (qp_attr_mask & IB_QP_AV) {
5077                 qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass);
5078                 qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label);
5079                 qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index);
5080                 qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit);
5081         }
5082         if (qp_attr_mask & IB_QP_PATH_MTU)
5083                 qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu);
5084         if (qp_attr_mask & IB_QP_PKEY_INDEX)
5085                 qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index);
5086 out:
5087         kfree(out);
5088         return err;
5089 }
5090
5091 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
5092                      int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
5093 {
5094         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
5095         struct mlx5_ib_qp *qp = to_mqp(ibqp);
5096         int err = 0;
5097         u8 raw_packet_qp_state;
5098
5099         if (ibqp->rwq_ind_tbl)
5100                 return -ENOSYS;
5101
5102         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
5103                 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
5104                                             qp_init_attr);
5105
5106         /* Not all of output fields are applicable, make sure to zero them */
5107         memset(qp_init_attr, 0, sizeof(*qp_init_attr));
5108         memset(qp_attr, 0, sizeof(*qp_attr));
5109
5110         if (unlikely(qp->qp_sub_type == MLX5_IB_QPT_DCT))
5111                 return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
5112                                             qp_attr_mask, qp_init_attr);
5113
5114         mutex_lock(&qp->mutex);
5115
5116         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
5117             qp->flags & MLX5_IB_QP_UNDERLAY) {
5118                 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
5119                 if (err)
5120                         goto out;
5121                 qp->state = raw_packet_qp_state;
5122                 qp_attr->port_num = 1;
5123         } else {
5124                 err = query_qp_attr(dev, qp, qp_attr);
5125                 if (err)
5126                         goto out;
5127         }
5128
5129         qp_attr->qp_state            = qp->state;
5130         qp_attr->cur_qp_state        = qp_attr->qp_state;
5131         qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;
5132         qp_attr->cap.max_recv_sge    = qp->rq.max_gs;
5133
5134         if (!ibqp->uobject) {
5135                 qp_attr->cap.max_send_wr  = qp->sq.max_post;
5136                 qp_attr->cap.max_send_sge = qp->sq.max_gs;
5137                 qp_init_attr->qp_context = ibqp->qp_context;
5138         } else {
5139                 qp_attr->cap.max_send_wr  = 0;
5140                 qp_attr->cap.max_send_sge = 0;
5141         }
5142
5143         qp_init_attr->qp_type = ibqp->qp_type;
5144         qp_init_attr->recv_cq = ibqp->recv_cq;
5145         qp_init_attr->send_cq = ibqp->send_cq;
5146         qp_init_attr->srq = ibqp->srq;
5147         qp_attr->cap.max_inline_data = qp->max_inline_data;
5148
5149         qp_init_attr->cap            = qp_attr->cap;
5150
5151         qp_init_attr->create_flags = 0;
5152         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
5153                 qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
5154
5155         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
5156                 qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
5157         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
5158                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
5159         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
5160                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
5161         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
5162                 qp_init_attr->create_flags |= mlx5_ib_create_qp_sqpn_qp1();
5163
5164         qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
5165                 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
5166
5167 out:
5168         mutex_unlock(&qp->mutex);
5169         return err;
5170 }
5171
5172 struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
5173                                           struct ib_ucontext *context,
5174                                           struct ib_udata *udata)
5175 {
5176         struct mlx5_ib_dev *dev = to_mdev(ibdev);
5177         struct mlx5_ib_xrcd *xrcd;
5178         int err;
5179
5180         if (!MLX5_CAP_GEN(dev->mdev, xrc))
5181                 return ERR_PTR(-ENOSYS);
5182
5183         xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
5184         if (!xrcd)
5185                 return ERR_PTR(-ENOMEM);
5186
5187         err = mlx5_core_xrcd_alloc(dev->mdev, &xrcd->xrcdn);
5188         if (err) {
5189                 kfree(xrcd);
5190                 return ERR_PTR(-ENOMEM);
5191         }
5192
5193         return &xrcd->ibxrcd;
5194 }
5195
5196 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
5197 {
5198         struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
5199         u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
5200         int err;
5201
5202         err = mlx5_core_xrcd_dealloc(dev->mdev, xrcdn);
5203         if (err)
5204                 mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
5205
5206         kfree(xrcd);
5207         return 0;
5208 }
5209
5210 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
5211 {
5212         struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
5213         struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
5214         struct ib_event event;
5215
5216         if (rwq->ibwq.event_handler) {
5217                 event.device     = rwq->ibwq.device;
5218                 event.element.wq = &rwq->ibwq;
5219                 switch (type) {
5220                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
5221                         event.event = IB_EVENT_WQ_FATAL;
5222                         break;
5223                 default:
5224                         mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
5225                         return;
5226                 }
5227
5228                 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
5229         }
5230 }
5231
5232 static int set_delay_drop(struct mlx5_ib_dev *dev)
5233 {
5234         int err = 0;
5235
5236         mutex_lock(&dev->delay_drop.lock);
5237         if (dev->delay_drop.activate)
5238                 goto out;
5239
5240         err = mlx5_core_set_delay_drop(dev->mdev, dev->delay_drop.timeout);
5241         if (err)
5242                 goto out;
5243
5244         dev->delay_drop.activate = true;
5245 out:
5246         mutex_unlock(&dev->delay_drop.lock);
5247
5248         if (!err)
5249                 atomic_inc(&dev->delay_drop.rqs_cnt);
5250         return err;
5251 }
5252
5253 static int  create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
5254                       struct ib_wq_init_attr *init_attr)
5255 {
5256         struct mlx5_ib_dev *dev;
5257         int has_net_offloads;
5258         __be64 *rq_pas0;
5259         void *in;
5260         void *rqc;
5261         void *wq;
5262         int inlen;
5263         int err;
5264
5265         dev = to_mdev(pd->device);
5266
5267         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
5268         in = kvzalloc(inlen, GFP_KERNEL);
5269         if (!in)
5270                 return -ENOMEM;
5271
5272         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
5273         MLX5_SET(rqc,  rqc, mem_rq_type,
5274                  MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
5275         MLX5_SET(rqc, rqc, user_index, rwq->user_index);
5276         MLX5_SET(rqc,  rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
5277         MLX5_SET(rqc,  rqc, state, MLX5_RQC_STATE_RST);
5278         MLX5_SET(rqc,  rqc, flush_in_error_en, 1);
5279         wq = MLX5_ADDR_OF(rqc, rqc, wq);
5280         MLX5_SET(wq, wq, wq_type,
5281                  rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ?
5282                  MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC);
5283         if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
5284                 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
5285                         mlx5_ib_dbg(dev, "Scatter end padding is not supported\n");
5286                         err = -EOPNOTSUPP;
5287                         goto out;
5288                 } else {
5289                         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
5290                 }
5291         }
5292         MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
5293         if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) {
5294                 MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en);
5295                 MLX5_SET(wq, wq, log_wqe_stride_size,
5296                          rwq->single_stride_log_num_of_bytes -
5297                          MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES);
5298                 MLX5_SET(wq, wq, log_wqe_num_of_strides, rwq->log_num_strides -
5299                          MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES);
5300         }
5301         MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
5302         MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
5303         MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
5304         MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
5305         MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
5306         MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
5307         has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);
5308         if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {
5309                 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
5310                         mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");
5311                         err = -EOPNOTSUPP;
5312                         goto out;
5313                 }
5314         } else {
5315                 MLX5_SET(rqc, rqc, vsd, 1);
5316         }
5317         if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {
5318                 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {
5319                         mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");
5320                         err = -EOPNOTSUPP;
5321                         goto out;
5322                 }
5323                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
5324         }
5325         if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
5326                 if (!(dev->ib_dev.attrs.raw_packet_caps &
5327                       IB_RAW_PACKET_CAP_DELAY_DROP)) {
5328                         mlx5_ib_dbg(dev, "Delay drop is not supported\n");
5329                         err = -EOPNOTSUPP;
5330                         goto out;
5331                 }
5332                 MLX5_SET(rqc, rqc, delay_drop_en, 1);
5333         }
5334         rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
5335         mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
5336         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);
5337         if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
5338                 err = set_delay_drop(dev);
5339                 if (err) {
5340                         mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
5341                                      err);
5342                         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
5343                 } else {
5344                         rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
5345                 }
5346         }
5347 out:
5348         kvfree(in);
5349         return err;
5350 }
5351
5352 static int set_user_rq_size(struct mlx5_ib_dev *dev,
5353                             struct ib_wq_init_attr *wq_init_attr,
5354                             struct mlx5_ib_create_wq *ucmd,
5355                             struct mlx5_ib_rwq *rwq)
5356 {
5357         /* Sanity check RQ size before proceeding */
5358         if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
5359                 return -EINVAL;
5360
5361         if (!ucmd->rq_wqe_count)
5362                 return -EINVAL;
5363
5364         rwq->wqe_count = ucmd->rq_wqe_count;
5365         rwq->wqe_shift = ucmd->rq_wqe_shift;
5366         rwq->buf_size = (rwq->wqe_count << rwq->wqe_shift);
5367         rwq->log_rq_stride = rwq->wqe_shift;
5368         rwq->log_rq_size = ilog2(rwq->wqe_count);
5369         return 0;
5370 }
5371
5372 static int prepare_user_rq(struct ib_pd *pd,
5373                            struct ib_wq_init_attr *init_attr,
5374                            struct ib_udata *udata,
5375                            struct mlx5_ib_rwq *rwq)
5376 {
5377         struct mlx5_ib_dev *dev = to_mdev(pd->device);
5378         struct mlx5_ib_create_wq ucmd = {};
5379         int err;
5380         size_t required_cmd_sz;
5381
5382         required_cmd_sz = offsetof(typeof(ucmd), single_stride_log_num_of_bytes)
5383                 + sizeof(ucmd.single_stride_log_num_of_bytes);
5384         if (udata->inlen < required_cmd_sz) {
5385                 mlx5_ib_dbg(dev, "invalid inlen\n");
5386                 return -EINVAL;
5387         }
5388
5389         if (udata->inlen > sizeof(ucmd) &&
5390             !ib_is_udata_cleared(udata, sizeof(ucmd),
5391                                  udata->inlen - sizeof(ucmd))) {
5392                 mlx5_ib_dbg(dev, "inlen is not supported\n");
5393                 return -EOPNOTSUPP;
5394         }
5395
5396         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
5397                 mlx5_ib_dbg(dev, "copy failed\n");
5398                 return -EFAULT;
5399         }
5400
5401         if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) {
5402                 mlx5_ib_dbg(dev, "invalid comp mask\n");
5403                 return -EOPNOTSUPP;
5404         } else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) {
5405                 if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) {
5406                         mlx5_ib_dbg(dev, "Striding RQ is not supported\n");
5407                         return -EOPNOTSUPP;
5408                 }
5409                 if ((ucmd.single_stride_log_num_of_bytes <
5410                     MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) ||
5411                     (ucmd.single_stride_log_num_of_bytes >
5412                      MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) {
5413                         mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n",
5414                                     ucmd.single_stride_log_num_of_bytes,
5415                                     MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES,
5416                                     MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES);
5417                         return -EINVAL;
5418                 }
5419                 if ((ucmd.single_wqe_log_num_of_strides >
5420                     MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) ||
5421                      (ucmd.single_wqe_log_num_of_strides <
5422                         MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES)) {
5423                         mlx5_ib_dbg(dev, "Invalid log num strides (%u. Range is %u - %u)\n",
5424                                     ucmd.single_wqe_log_num_of_strides,
5425                                     MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES,
5426                                     MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES);
5427                         return -EINVAL;
5428                 }
5429                 rwq->single_stride_log_num_of_bytes =
5430                         ucmd.single_stride_log_num_of_bytes;
5431                 rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides;
5432                 rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en;
5433                 rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ;
5434         }
5435
5436         err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
5437         if (err) {
5438                 mlx5_ib_dbg(dev, "err %d\n", err);
5439                 return err;
5440         }
5441
5442         err = create_user_rq(dev, pd, rwq, &ucmd);
5443         if (err) {
5444                 mlx5_ib_dbg(dev, "err %d\n", err);
5445                 if (err)
5446                         return err;
5447         }
5448
5449         rwq->user_index = ucmd.user_index;
5450         return 0;
5451 }
5452
5453 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
5454                                 struct ib_wq_init_attr *init_attr,
5455                                 struct ib_udata *udata)
5456 {
5457         struct mlx5_ib_dev *dev;
5458         struct mlx5_ib_rwq *rwq;
5459         struct mlx5_ib_create_wq_resp resp = {};
5460         size_t min_resp_len;
5461         int err;
5462
5463         if (!udata)
5464                 return ERR_PTR(-ENOSYS);
5465
5466         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
5467         if (udata->outlen && udata->outlen < min_resp_len)
5468                 return ERR_PTR(-EINVAL);
5469
5470         dev = to_mdev(pd->device);
5471         switch (init_attr->wq_type) {
5472         case IB_WQT_RQ:
5473                 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
5474                 if (!rwq)
5475                         return ERR_PTR(-ENOMEM);
5476                 err = prepare_user_rq(pd, init_attr, udata, rwq);
5477                 if (err)
5478                         goto err;
5479                 err = create_rq(rwq, pd, init_attr);
5480                 if (err)
5481                         goto err_user_rq;
5482                 break;
5483         default:
5484                 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
5485                             init_attr->wq_type);
5486                 return ERR_PTR(-EINVAL);
5487         }
5488
5489         rwq->ibwq.wq_num = rwq->core_qp.qpn;
5490         rwq->ibwq.state = IB_WQS_RESET;
5491         if (udata->outlen) {
5492                 resp.response_length = offsetof(typeof(resp), response_length) +
5493                                 sizeof(resp.response_length);
5494                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
5495                 if (err)
5496                         goto err_copy;
5497         }
5498
5499         rwq->core_qp.event = mlx5_ib_wq_event;
5500         rwq->ibwq.event_handler = init_attr->event_handler;
5501         return &rwq->ibwq;
5502
5503 err_copy:
5504         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
5505 err_user_rq:
5506         destroy_user_rq(dev, pd, rwq);
5507 err:
5508         kfree(rwq);
5509         return ERR_PTR(err);
5510 }
5511
5512 int mlx5_ib_destroy_wq(struct ib_wq *wq)
5513 {
5514         struct mlx5_ib_dev *dev = to_mdev(wq->device);
5515         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
5516
5517         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
5518         destroy_user_rq(dev, wq->pd, rwq);
5519         kfree(rwq);
5520
5521         return 0;
5522 }
5523
5524 struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
5525                                                       struct ib_rwq_ind_table_init_attr *init_attr,
5526                                                       struct ib_udata *udata)
5527 {
5528         struct mlx5_ib_dev *dev = to_mdev(device);
5529         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
5530         int sz = 1 << init_attr->log_ind_tbl_size;
5531         struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
5532         size_t min_resp_len;
5533         int inlen;
5534         int err;
5535         int i;
5536         u32 *in;
5537         void *rqtc;
5538
5539         if (udata->inlen > 0 &&
5540             !ib_is_udata_cleared(udata, 0,
5541                                  udata->inlen))
5542                 return ERR_PTR(-EOPNOTSUPP);
5543
5544         if (init_attr->log_ind_tbl_size >
5545             MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
5546                 mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
5547                             init_attr->log_ind_tbl_size,
5548                             MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
5549                 return ERR_PTR(-EINVAL);
5550         }
5551
5552         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
5553         if (udata->outlen && udata->outlen < min_resp_len)
5554                 return ERR_PTR(-EINVAL);
5555
5556         rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
5557         if (!rwq_ind_tbl)
5558                 return ERR_PTR(-ENOMEM);
5559
5560         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
5561         in = kvzalloc(inlen, GFP_KERNEL);
5562         if (!in) {
5563                 err = -ENOMEM;
5564                 goto err;
5565         }
5566
5567         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
5568
5569         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
5570         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
5571
5572         for (i = 0; i < sz; i++)
5573                 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
5574
5575         err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
5576         kvfree(in);
5577
5578         if (err)
5579                 goto err;
5580
5581         rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
5582         if (udata->outlen) {
5583                 resp.response_length = offsetof(typeof(resp), response_length) +
5584                                         sizeof(resp.response_length);
5585                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
5586                 if (err)
5587                         goto err_copy;
5588         }
5589
5590         return &rwq_ind_tbl->ib_rwq_ind_tbl;
5591
5592 err_copy:
5593         mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
5594 err:
5595         kfree(rwq_ind_tbl);
5596         return ERR_PTR(err);
5597 }
5598
5599 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
5600 {
5601         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
5602         struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
5603
5604         mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
5605
5606         kfree(rwq_ind_tbl);
5607         return 0;
5608 }
5609
5610 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
5611                       u32 wq_attr_mask, struct ib_udata *udata)
5612 {
5613         struct mlx5_ib_dev *dev = to_mdev(wq->device);
5614         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
5615         struct mlx5_ib_modify_wq ucmd = {};
5616         size_t required_cmd_sz;
5617         int curr_wq_state;
5618         int wq_state;
5619         int inlen;
5620         int err;
5621         void *rqc;
5622         void *in;
5623
5624         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
5625         if (udata->inlen < required_cmd_sz)
5626                 return -EINVAL;
5627
5628         if (udata->inlen > sizeof(ucmd) &&
5629             !ib_is_udata_cleared(udata, sizeof(ucmd),
5630                                  udata->inlen - sizeof(ucmd)))
5631                 return -EOPNOTSUPP;
5632
5633         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
5634                 return -EFAULT;
5635
5636         if (ucmd.comp_mask || ucmd.reserved)
5637                 return -EOPNOTSUPP;
5638
5639         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
5640         in = kvzalloc(inlen, GFP_KERNEL);
5641         if (!in)
5642                 return -ENOMEM;
5643
5644         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
5645
5646         curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
5647                 wq_attr->curr_wq_state : wq->state;
5648         wq_state = (wq_attr_mask & IB_WQ_STATE) ?
5649                 wq_attr->wq_state : curr_wq_state;
5650         if (curr_wq_state == IB_WQS_ERR)
5651                 curr_wq_state = MLX5_RQC_STATE_ERR;
5652         if (wq_state == IB_WQS_ERR)
5653                 wq_state = MLX5_RQC_STATE_ERR;
5654         MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
5655         MLX5_SET(rqc, rqc, state, wq_state);
5656
5657         if (wq_attr_mask & IB_WQ_FLAGS) {
5658                 if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) {
5659                         if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
5660                               MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
5661                                 mlx5_ib_dbg(dev, "VLAN offloads are not "
5662                                             "supported\n");
5663                                 err = -EOPNOTSUPP;
5664                                 goto out;
5665                         }
5666                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
5667                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
5668                         MLX5_SET(rqc, rqc, vsd,
5669                                  (wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1);
5670                 }
5671
5672                 if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
5673                         mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n");
5674                         err = -EOPNOTSUPP;
5675                         goto out;
5676                 }
5677         }
5678
5679         if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) {
5680                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
5681                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
5682                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
5683                         MLX5_SET(rqc, rqc, counter_set_id,
5684                                  dev->port->cnts.set_id);
5685                 } else
5686                         pr_info_once("%s: Receive WQ counters are not supported on current FW\n",
5687                                      dev->ib_dev.name);
5688         }
5689
5690         err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in, inlen);
5691         if (!err)
5692                 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
5693
5694 out:
5695         kvfree(in);
5696         return err;
5697 }