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 <rdma/rdma_counter.h>
  38 #include <linux/mlx5/fs.h>
  39 #include "mlx5_ib.h"
  40 #include "ib_rep.h"
  41 #include "cmd.h"
  42
  43 /* not supported currently */
  44 static int wq_signature;
  45
  46 enum {
  47         MLX5_IB_ACK_REQ_FREQ    = 8,
  48 };
  49
  50 enum {
  51         MLX5_IB_DEFAULT_SCHED_QUEUE     = 0x83,
  52         MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
  53         MLX5_IB_LINK_TYPE_IB            = 0,
  54         MLX5_IB_LINK_TYPE_ETH           = 1
  55 };
  56
  57 enum {
  58         MLX5_IB_SQ_STRIDE       = 6,
  59         MLX5_IB_SQ_UMR_INLINE_THRESHOLD = 64,
  60 };
  61
  62 static const u32 mlx5_ib_opcode[] = {
  63         [IB_WR_SEND]                            = MLX5_OPCODE_SEND,
  64         [IB_WR_LSO]                             = MLX5_OPCODE_LSO,
  65         [IB_WR_SEND_WITH_IMM]                   = MLX5_OPCODE_SEND_IMM,
  66         [IB_WR_RDMA_WRITE]                      = MLX5_OPCODE_RDMA_WRITE,
  67         [IB_WR_RDMA_WRITE_WITH_IMM]             = MLX5_OPCODE_RDMA_WRITE_IMM,
  68         [IB_WR_RDMA_READ]                       = MLX5_OPCODE_RDMA_READ,
  69         [IB_WR_ATOMIC_CMP_AND_SWP]              = MLX5_OPCODE_ATOMIC_CS,
  70         [IB_WR_ATOMIC_FETCH_AND_ADD]            = MLX5_OPCODE_ATOMIC_FA,
  71         [IB_WR_SEND_WITH_INV]                   = MLX5_OPCODE_SEND_INVAL,
  72         [IB_WR_LOCAL_INV]                       = MLX5_OPCODE_UMR,
  73         [IB_WR_REG_MR]                          = MLX5_OPCODE_UMR,
  74         [IB_WR_MASKED_ATOMIC_CMP_AND_SWP]       = MLX5_OPCODE_ATOMIC_MASKED_CS,
  75         [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD]     = MLX5_OPCODE_ATOMIC_MASKED_FA,
  76         [MLX5_IB_WR_UMR]                        = MLX5_OPCODE_UMR,
  77 };
  78
  79 struct mlx5_wqe_eth_pad {
  80         u8 rsvd0[16];
  81 };
  82
  83 enum raw_qp_set_mask_map {
  84         MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID         = 1UL << 0,
  85         MLX5_RAW_QP_RATE_LIMIT                  = 1UL << 1,
  86 };
  87
  88 struct mlx5_modify_raw_qp_param {
  89         u16 operation;
  90
  91         u32 set_mask; /* raw_qp_set_mask_map */
  92
  93         struct mlx5_rate_limit rl;
  94
  95         u8 rq_q_ctr_id;
  96         u16 port;
  97 };
  98
  99 static void get_cqs(enum ib_qp_type qp_type,
 100                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
 101                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
 102
 103 static int is_qp0(enum ib_qp_type qp_type)
 104 {
 105         return qp_type == IB_QPT_SMI;
 106 }
 107
 108 static int is_sqp(enum ib_qp_type qp_type)
 109 {
 110         return is_qp0(qp_type) || is_qp1(qp_type);
 111 }
 112
 113 /**
 114  * mlx5_ib_read_user_wqe_common() - Copy a WQE (or part of) from user WQ
 115  * to kernel buffer
 116  *
 117  * @umem: User space memory where the WQ is
 118  * @buffer: buffer to copy to
 119  * @buflen: buffer length
 120  * @wqe_index: index of WQE to copy from
 121  * @wq_offset: offset to start of WQ
 122  * @wq_wqe_cnt: number of WQEs in WQ
 123  * @wq_wqe_shift: log2 of WQE size
 124  * @bcnt: number of bytes to copy
 125  * @bytes_copied: number of bytes to copy (return value)
 126  *
 127  * Copies from start of WQE bcnt or less bytes.
 128  * Does not gurantee to copy the entire WQE.
 129  *
 130  * Return: zero on success, or an error code.
 131  */
 132 static int mlx5_ib_read_user_wqe_common(struct ib_umem *umem, void *buffer,
 133                                         size_t buflen, int wqe_index,
 134                                         int wq_offset, int wq_wqe_cnt,
 135                                         int wq_wqe_shift, int bcnt,
 136                                         size_t *bytes_copied)
 137 {
 138         size_t offset = wq_offset + ((wqe_index % wq_wqe_cnt) << wq_wqe_shift);
 139         size_t wq_end = wq_offset + (wq_wqe_cnt << wq_wqe_shift);
 140         size_t copy_length;
 141         int ret;
 142
 143         /* don't copy more than requested, more than buffer length or
 144          * beyond WQ end
 145          */
 146         copy_length = min_t(u32, buflen, wq_end - offset);
 147         copy_length = min_t(u32, copy_length, bcnt);
 148
 149         ret = ib_umem_copy_from(buffer, umem, offset, copy_length);
 150         if (ret)
 151                 return ret;
 152
 153         if (!ret && bytes_copied)
 154                 *bytes_copied = copy_length;
 155
 156         return 0;
 157 }
 158
 159 static int mlx5_ib_read_kernel_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index,
 160                                       void *buffer, size_t buflen, size_t *bc)
 161 {
 162         struct mlx5_wqe_ctrl_seg *ctrl;
 163         size_t bytes_copied = 0;
 164         size_t wqe_length;
 165         void *p;
 166         int ds;
 167
 168         wqe_index = wqe_index & qp->sq.fbc.sz_m1;
 169
 170         /* read the control segment first */
 171         p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, wqe_index);
 172         ctrl = p;
 173         ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
 174         wqe_length = ds * MLX5_WQE_DS_UNITS;
 175
 176         /* read rest of WQE if it spreads over more than one stride */
 177         while (bytes_copied < wqe_length) {
 178                 size_t copy_length =
 179                         min_t(size_t, buflen - bytes_copied, MLX5_SEND_WQE_BB);
 180
 181                 if (!copy_length)
 182                         break;
 183
 184                 memcpy(buffer + bytes_copied, p, copy_length);
 185                 bytes_copied += copy_length;
 186
 187                 wqe_index = (wqe_index + 1) & qp->sq.fbc.sz_m1;
 188                 p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, wqe_index);
 189         }
 190         *bc = bytes_copied;
 191         return 0;
 192 }
 193
 194 static int mlx5_ib_read_user_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index,
 195                                     void *buffer, size_t buflen, size_t *bc)
 196 {
 197         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
 198         struct ib_umem *umem = base->ubuffer.umem;
 199         struct mlx5_ib_wq *wq = &qp->sq;
 200         struct mlx5_wqe_ctrl_seg *ctrl;
 201         size_t bytes_copied;
 202         size_t bytes_copied2;
 203         size_t wqe_length;
 204         int ret;
 205         int ds;
 206
 207         /* at first read as much as possible */
 208         ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index,
 209                                            wq->offset, wq->wqe_cnt,
 210                                            wq->wqe_shift, buflen,
 211                                            &bytes_copied);
 212         if (ret)
 213                 return ret;
 214
 215         /* we need at least control segment size to proceed */
 216         if (bytes_copied < sizeof(*ctrl))
 217                 return -EINVAL;
 218
 219         ctrl = buffer;
 220         ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
 221         wqe_length = ds * MLX5_WQE_DS_UNITS;
 222
 223         /* if we copied enough then we are done */
 224         if (bytes_copied >= wqe_length) {
 225                 *bc = bytes_copied;
 226                 return 0;
 227         }
 228
 229         /* otherwise this a wrapped around wqe
 230          * so read the remaining bytes starting
 231          * from  wqe_index 0
 232          */
 233         ret = mlx5_ib_read_user_wqe_common(umem, buffer + bytes_copied,
 234                                            buflen - bytes_copied, 0, wq->offset,
 235                                            wq->wqe_cnt, wq->wqe_shift,
 236                                            wqe_length - bytes_copied,
 237                                            &bytes_copied2);
 238
 239         if (ret)
 240                 return ret;
 241         *bc = bytes_copied + bytes_copied2;
 242         return 0;
 243 }
 244
 245 int mlx5_ib_read_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
 246                         size_t buflen, size_t *bc)
 247 {
 248         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
 249         struct ib_umem *umem = base->ubuffer.umem;
 250
 251         if (buflen < sizeof(struct mlx5_wqe_ctrl_seg))
 252                 return -EINVAL;
 253
 254         if (!umem)
 255                 return mlx5_ib_read_kernel_wqe_sq(qp, wqe_index, buffer,
 256                                                   buflen, bc);
 257
 258         return mlx5_ib_read_user_wqe_sq(qp, wqe_index, buffer, buflen, bc);
 259 }
 260
 261 static int mlx5_ib_read_user_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index,
 262                                     void *buffer, size_t buflen, size_t *bc)
 263 {
 264         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
 265         struct ib_umem *umem = base->ubuffer.umem;
 266         struct mlx5_ib_wq *wq = &qp->rq;
 267         size_t bytes_copied;
 268         int ret;
 269
 270         ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index,
 271                                            wq->offset, wq->wqe_cnt,
 272                                            wq->wqe_shift, buflen,
 273                                            &bytes_copied);
 274
 275         if (ret)
 276                 return ret;
 277         *bc = bytes_copied;
 278         return 0;
 279 }
 280
 281 int mlx5_ib_read_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
 282                         size_t buflen, size_t *bc)
 283 {
 284         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
 285         struct ib_umem *umem = base->ubuffer.umem;
 286         struct mlx5_ib_wq *wq = &qp->rq;
 287         size_t wqe_size = 1 << wq->wqe_shift;
 288
 289         if (buflen < wqe_size)
 290                 return -EINVAL;
 291
 292         if (!umem)
 293                 return -EOPNOTSUPP;
 294
 295         return mlx5_ib_read_user_wqe_rq(qp, wqe_index, buffer, buflen, bc);
 296 }
 297
 298 static int mlx5_ib_read_user_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index,
 299                                      void *buffer, size_t buflen, size_t *bc)
 300 {
 301         struct ib_umem *umem = srq->umem;
 302         size_t bytes_copied;
 303         int ret;
 304
 305         ret = mlx5_ib_read_user_wqe_common(umem, buffer, buflen, wqe_index, 0,
 306                                            srq->msrq.max, srq->msrq.wqe_shift,
 307                                            buflen, &bytes_copied);
 308
 309         if (ret)
 310                 return ret;
 311         *bc = bytes_copied;
 312         return 0;
 313 }
 314
 315 int mlx5_ib_read_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index, void *buffer,
 316                          size_t buflen, size_t *bc)
 317 {
 318         struct ib_umem *umem = srq->umem;
 319         size_t wqe_size = 1 << srq->msrq.wqe_shift;
 320
 321         if (buflen < wqe_size)
 322                 return -EINVAL;
 323
 324         if (!umem)
 325                 return -EOPNOTSUPP;
 326
 327         return mlx5_ib_read_user_wqe_srq(srq, wqe_index, buffer, buflen, bc);
 328 }
 329
 330 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
 331 {
 332         struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
 333         struct ib_event event;
 334
 335         if (type == MLX5_EVENT_TYPE_PATH_MIG) {
 336                 /* This event is only valid for trans_qps */
 337                 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
 338         }
 339
 340         if (ibqp->event_handler) {
 341                 event.device     = ibqp->device;
 342                 event.element.qp = ibqp;
 343                 switch (type) {
 344                 case MLX5_EVENT_TYPE_PATH_MIG:
 345                         event.event = IB_EVENT_PATH_MIG;
 346                         break;
 347                 case MLX5_EVENT_TYPE_COMM_EST:
 348                         event.event = IB_EVENT_COMM_EST;
 349                         break;
 350                 case MLX5_EVENT_TYPE_SQ_DRAINED:
 351                         event.event = IB_EVENT_SQ_DRAINED;
 352                         break;
 353                 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
 354                         event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 355                         break;
 356                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
 357                         event.event = IB_EVENT_QP_FATAL;
 358                         break;
 359                 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
 360                         event.event = IB_EVENT_PATH_MIG_ERR;
 361                         break;
 362                 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
 363                         event.event = IB_EVENT_QP_REQ_ERR;
 364                         break;
 365                 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
 366                         event.event = IB_EVENT_QP_ACCESS_ERR;
 367                         break;
 368                 default:
 369                         pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
 370                         return;
 371                 }
 372
 373                 ibqp->event_handler(&event, ibqp->qp_context);
 374         }
 375 }
 376
 377 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
 378                        int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
 379 {
 380         int wqe_size;
 381         int wq_size;
 382
 383         /* Sanity check RQ size before proceeding */
 384         if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
 385                 return -EINVAL;
 386
 387         if (!has_rq) {
 388                 qp->rq.max_gs = 0;
 389                 qp->rq.wqe_cnt = 0;
 390                 qp->rq.wqe_shift = 0;
 391                 cap->max_recv_wr = 0;
 392                 cap->max_recv_sge = 0;
 393         } else {
 394                 if (ucmd) {
 395                         qp->rq.wqe_cnt = ucmd->rq_wqe_count;
 396                         if (ucmd->rq_wqe_shift > BITS_PER_BYTE * sizeof(ucmd->rq_wqe_shift))
 397                                 return -EINVAL;
 398                         qp->rq.wqe_shift = ucmd->rq_wqe_shift;
 399                         if ((1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) < qp->wq_sig)
 400                                 return -EINVAL;
 401                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 402                         qp->rq.max_post = qp->rq.wqe_cnt;
 403                 } else {
 404                         wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
 405                         wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
 406                         wqe_size = roundup_pow_of_two(wqe_size);
 407                         wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
 408                         wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
 409                         qp->rq.wqe_cnt = wq_size / wqe_size;
 410                         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
 411                                 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
 412                                             wqe_size,
 413                                             MLX5_CAP_GEN(dev->mdev,
 414                                                          max_wqe_sz_rq));
 415                                 return -EINVAL;
 416                         }
 417                         qp->rq.wqe_shift = ilog2(wqe_size);
 418                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 419                         qp->rq.max_post = qp->rq.wqe_cnt;
 420                 }
 421         }
 422
 423         return 0;
 424 }
 425
 426 static int sq_overhead(struct ib_qp_init_attr *attr)
 427 {
 428         int size = 0;
 429
 430         switch (attr->qp_type) {
 431         case IB_QPT_XRC_INI:
 432                 size += sizeof(struct mlx5_wqe_xrc_seg);
 433                 /* fall through */
 434         case IB_QPT_RC:
 435                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 436                         max(sizeof(struct mlx5_wqe_atomic_seg) +
 437                             sizeof(struct mlx5_wqe_raddr_seg),
 438                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 439                             sizeof(struct mlx5_mkey_seg) +
 440                             MLX5_IB_SQ_UMR_INLINE_THRESHOLD /
 441                             MLX5_IB_UMR_OCTOWORD);
 442                 break;
 443
 444         case IB_QPT_XRC_TGT:
 445                 return 0;
 446
 447         case IB_QPT_UC:
 448                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 449                         max(sizeof(struct mlx5_wqe_raddr_seg),
 450                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 451                             sizeof(struct mlx5_mkey_seg));
 452                 break;
 453
 454         case IB_QPT_UD:
 455                 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
 456                         size += sizeof(struct mlx5_wqe_eth_pad) +
 457                                 sizeof(struct mlx5_wqe_eth_seg);
 458                 /* fall through */
 459         case IB_QPT_SMI:
 460         case MLX5_IB_QPT_HW_GSI:
 461                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 462                         sizeof(struct mlx5_wqe_datagram_seg);
 463                 break;
 464
 465         case MLX5_IB_QPT_REG_UMR:
 466                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 467                         sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 468                         sizeof(struct mlx5_mkey_seg);
 469                 break;
 470
 471         default:
 472                 return -EINVAL;
 473         }
 474
 475         return size;
 476 }
 477
 478 static int calc_send_wqe(struct ib_qp_init_attr *attr)
 479 {
 480         int inl_size = 0;
 481         int size;
 482
 483         size = sq_overhead(attr);
 484         if (size < 0)
 485                 return size;
 486
 487         if (attr->cap.max_inline_data) {
 488                 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
 489                         attr->cap.max_inline_data;
 490         }
 491
 492         size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
 493         if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN &&
 494             ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
 495                 return MLX5_SIG_WQE_SIZE;
 496         else
 497                 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
 498 }
 499
 500 static int get_send_sge(struct ib_qp_init_attr *attr, int wqe_size)
 501 {
 502         int max_sge;
 503
 504         if (attr->qp_type == IB_QPT_RC)
 505                 max_sge = (min_t(int, wqe_size, 512) -
 506                            sizeof(struct mlx5_wqe_ctrl_seg) -
 507                            sizeof(struct mlx5_wqe_raddr_seg)) /
 508                         sizeof(struct mlx5_wqe_data_seg);
 509         else if (attr->qp_type == IB_QPT_XRC_INI)
 510                 max_sge = (min_t(int, wqe_size, 512) -
 511                            sizeof(struct mlx5_wqe_ctrl_seg) -
 512                            sizeof(struct mlx5_wqe_xrc_seg) -
 513                            sizeof(struct mlx5_wqe_raddr_seg)) /
 514                         sizeof(struct mlx5_wqe_data_seg);
 515         else
 516                 max_sge = (wqe_size - sq_overhead(attr)) /
 517                         sizeof(struct mlx5_wqe_data_seg);
 518
 519         return min_t(int, max_sge, wqe_size - sq_overhead(attr) /
 520                      sizeof(struct mlx5_wqe_data_seg));
 521 }
 522
 523 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
 524                         struct mlx5_ib_qp *qp)
 525 {
 526         int wqe_size;
 527         int wq_size;
 528
 529         if (!attr->cap.max_send_wr)
 530                 return 0;
 531
 532         wqe_size = calc_send_wqe(attr);
 533         mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
 534         if (wqe_size < 0)
 535                 return wqe_size;
 536
 537         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 538                 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
 539                             wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 540                 return -EINVAL;
 541         }
 542
 543         qp->max_inline_data = wqe_size - sq_overhead(attr) -
 544                               sizeof(struct mlx5_wqe_inline_seg);
 545         attr->cap.max_inline_data = qp->max_inline_data;
 546
 547         wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
 548         qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
 549         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 550                 mlx5_ib_dbg(dev, "send queue size (%d * %d / %d -> %d) exceeds limits(%d)\n",
 551                             attr->cap.max_send_wr, wqe_size, MLX5_SEND_WQE_BB,
 552                             qp->sq.wqe_cnt,
 553                             1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 554                 return -ENOMEM;
 555         }
 556         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 557         qp->sq.max_gs = get_send_sge(attr, wqe_size);
 558         if (qp->sq.max_gs < attr->cap.max_send_sge)
 559                 return -ENOMEM;
 560
 561         attr->cap.max_send_sge = qp->sq.max_gs;
 562         qp->sq.max_post = wq_size / wqe_size;
 563         attr->cap.max_send_wr = qp->sq.max_post;
 564
 565         return wq_size;
 566 }
 567
 568 static int set_user_buf_size(struct mlx5_ib_dev *dev,
 569                             struct mlx5_ib_qp *qp,
 570                             struct mlx5_ib_create_qp *ucmd,
 571                             struct mlx5_ib_qp_base *base,
 572                             struct ib_qp_init_attr *attr)
 573 {
 574         int desc_sz = 1 << qp->sq.wqe_shift;
 575
 576         if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 577                 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
 578                              desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 579                 return -EINVAL;
 580         }
 581
 582         if (ucmd->sq_wqe_count && !is_power_of_2(ucmd->sq_wqe_count)) {
 583                 mlx5_ib_warn(dev, "sq_wqe_count %d is not a power of two\n",
 584                              ucmd->sq_wqe_count);
 585                 return -EINVAL;
 586         }
 587
 588         qp->sq.wqe_cnt = ucmd->sq_wqe_count;
 589
 590         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 591                 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
 592                              qp->sq.wqe_cnt,
 593                              1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 594                 return -EINVAL;
 595         }
 596
 597         if (attr->qp_type == IB_QPT_RAW_PACKET ||
 598             qp->flags & MLX5_IB_QP_UNDERLAY) {
 599                 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 600                 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
 601         } else {
 602                 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
 603                                          (qp->sq.wqe_cnt << 6);
 604         }
 605
 606         return 0;
 607 }
 608
 609 static int qp_has_rq(struct ib_qp_init_attr *attr)
 610 {
 611         if (attr->qp_type == IB_QPT_XRC_INI ||
 612             attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
 613             attr->qp_type == MLX5_IB_QPT_REG_UMR ||
 614             !attr->cap.max_recv_wr)
 615                 return 0;
 616
 617         return 1;
 618 }
 619
 620 enum {
 621         /* this is the first blue flame register in the array of bfregs assigned
 622          * to a processes. Since we do not use it for blue flame but rather
 623          * regular 64 bit doorbells, we do not need a lock for maintaiing
 624          * "odd/even" order
 625          */
 626         NUM_NON_BLUE_FLAME_BFREGS = 1,
 627 };
 628
 629 static int max_bfregs(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi)
 630 {
 631         return get_num_static_uars(dev, bfregi) * MLX5_NON_FP_BFREGS_PER_UAR;
 632 }
 633
 634 static int num_med_bfreg(struct mlx5_ib_dev *dev,
 635                          struct mlx5_bfreg_info *bfregi)
 636 {
 637         int n;
 638
 639         n = max_bfregs(dev, bfregi) - bfregi->num_low_latency_bfregs -
 640             NUM_NON_BLUE_FLAME_BFREGS;
 641
 642         return n >= 0 ? n : 0;
 643 }
 644
 645 static int first_med_bfreg(struct mlx5_ib_dev *dev,
 646                            struct mlx5_bfreg_info *bfregi)
 647 {
 648         return num_med_bfreg(dev, bfregi) ? 1 : -ENOMEM;
 649 }
 650
 651 static int first_hi_bfreg(struct mlx5_ib_dev *dev,
 652                           struct mlx5_bfreg_info *bfregi)
 653 {
 654         int med;
 655
 656         med = num_med_bfreg(dev, bfregi);
 657         return ++med;
 658 }
 659
 660 static int alloc_high_class_bfreg(struct mlx5_ib_dev *dev,
 661                                   struct mlx5_bfreg_info *bfregi)
 662 {
 663         int i;
 664
 665         for (i = first_hi_bfreg(dev, bfregi); i < max_bfregs(dev, bfregi); i++) {
 666                 if (!bfregi->count[i]) {
 667                         bfregi->count[i]++;
 668                         return i;
 669                 }
 670         }
 671
 672         return -ENOMEM;
 673 }
 674
 675 static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev,
 676                                  struct mlx5_bfreg_info *bfregi)
 677 {
 678         int minidx = first_med_bfreg(dev, bfregi);
 679         int i;
 680
 681         if (minidx < 0)
 682                 return minidx;
 683
 684         for (i = minidx; i < first_hi_bfreg(dev, bfregi); i++) {
 685                 if (bfregi->count[i] < bfregi->count[minidx])
 686                         minidx = i;
 687                 if (!bfregi->count[minidx])
 688                         break;
 689         }
 690
 691         bfregi->count[minidx]++;
 692         return minidx;
 693 }
 694
 695 static int alloc_bfreg(struct mlx5_ib_dev *dev,
 696                        struct mlx5_bfreg_info *bfregi)
 697 {
 698         int bfregn = -ENOMEM;
 699
 700         mutex_lock(&bfregi->lock);
 701         if (bfregi->ver >= 2) {
 702                 bfregn = alloc_high_class_bfreg(dev, bfregi);
 703                 if (bfregn < 0)
 704                         bfregn = alloc_med_class_bfreg(dev, bfregi);
 705         }
 706
 707         if (bfregn < 0) {
 708                 BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1);
 709                 bfregn = 0;
 710                 bfregi->count[bfregn]++;
 711         }
 712         mutex_unlock(&bfregi->lock);
 713
 714         return bfregn;
 715 }
 716
 717 void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi, int bfregn)
 718 {
 719         mutex_lock(&bfregi->lock);
 720         bfregi->count[bfregn]--;
 721         mutex_unlock(&bfregi->lock);
 722 }
 723
 724 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
 725 {
 726         switch (state) {
 727         case IB_QPS_RESET:      return MLX5_QP_STATE_RST;
 728         case IB_QPS_INIT:       return MLX5_QP_STATE_INIT;
 729         case IB_QPS_RTR:        return MLX5_QP_STATE_RTR;
 730         case IB_QPS_RTS:        return MLX5_QP_STATE_RTS;
 731         case IB_QPS_SQD:        return MLX5_QP_STATE_SQD;
 732         case IB_QPS_SQE:        return MLX5_QP_STATE_SQER;
 733         case IB_QPS_ERR:        return MLX5_QP_STATE_ERR;
 734         default:                return -1;
 735         }
 736 }
 737
 738 static int to_mlx5_st(enum ib_qp_type type)
 739 {
 740         switch (type) {
 741         case IB_QPT_RC:                 return MLX5_QP_ST_RC;
 742         case IB_QPT_UC:                 return MLX5_QP_ST_UC;
 743         case IB_QPT_UD:                 return MLX5_QP_ST_UD;
 744         case MLX5_IB_QPT_REG_UMR:       return MLX5_QP_ST_REG_UMR;
 745         case IB_QPT_XRC_INI:
 746         case IB_QPT_XRC_TGT:            return MLX5_QP_ST_XRC;
 747         case IB_QPT_SMI:                return MLX5_QP_ST_QP0;
 748         case MLX5_IB_QPT_HW_GSI:        return MLX5_QP_ST_QP1;
 749         case MLX5_IB_QPT_DCI:           return MLX5_QP_ST_DCI;
 750         case IB_QPT_RAW_IPV6:           return MLX5_QP_ST_RAW_IPV6;
 751         case IB_QPT_RAW_PACKET:
 752         case IB_QPT_RAW_ETHERTYPE:      return MLX5_QP_ST_RAW_ETHERTYPE;
 753         case IB_QPT_MAX:
 754         default:                return -EINVAL;
 755         }
 756 }
 757
 758 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
 759                              struct mlx5_ib_cq *recv_cq);
 760 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
 761                                struct mlx5_ib_cq *recv_cq);
 762
 763 int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
 764                         struct mlx5_bfreg_info *bfregi, u32 bfregn,
 765                         bool dyn_bfreg)
 766 {
 767         unsigned int bfregs_per_sys_page;
 768         u32 index_of_sys_page;
 769         u32 offset;
 770
 771         bfregs_per_sys_page = get_uars_per_sys_page(dev, bfregi->lib_uar_4k) *
 772                                 MLX5_NON_FP_BFREGS_PER_UAR;
 773         index_of_sys_page = bfregn / bfregs_per_sys_page;
 774
 775         if (dyn_bfreg) {
 776                 index_of_sys_page += bfregi->num_static_sys_pages;
 777
 778                 if (index_of_sys_page >= bfregi->num_sys_pages)
 779                         return -EINVAL;
 780
 781                 if (bfregn > bfregi->num_dyn_bfregs ||
 782                     bfregi->sys_pages[index_of_sys_page] == MLX5_IB_INVALID_UAR_INDEX) {
 783                         mlx5_ib_dbg(dev, "Invalid dynamic uar index\n");
 784                         return -EINVAL;
 785                 }
 786         }
 787
 788         offset = bfregn % bfregs_per_sys_page / MLX5_NON_FP_BFREGS_PER_UAR;
 789         return bfregi->sys_pages[index_of_sys_page] + offset;
 790 }
 791
 792 static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev, struct ib_udata *udata,
 793                             unsigned long addr, size_t size,
 794                             struct ib_umem **umem, int *npages, int *page_shift,
 795                             int *ncont, u32 *offset)
 796 {
 797         int err;
 798
 799         *umem = ib_umem_get(&dev->ib_dev, addr, size, 0);
 800         if (IS_ERR(*umem)) {
 801                 mlx5_ib_dbg(dev, "umem_get failed\n");
 802                 return PTR_ERR(*umem);
 803         }
 804
 805         mlx5_ib_cont_pages(*umem, addr, 0, npages, page_shift, ncont, NULL);
 806
 807         err = mlx5_ib_get_buf_offset(addr, *page_shift, offset);
 808         if (err) {
 809                 mlx5_ib_warn(dev, "bad offset\n");
 810                 goto err_umem;
 811         }
 812
 813         mlx5_ib_dbg(dev, "addr 0x%lx, size %zu, npages %d, page_shift %d, ncont %d, offset %d\n",
 814                     addr, size, *npages, *page_shift, *ncont, *offset);
 815
 816         return 0;
 817
 818 err_umem:
 819         ib_umem_release(*umem);
 820         *umem = NULL;
 821
 822         return err;
 823 }
 824
 825 static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 826                             struct mlx5_ib_rwq *rwq, struct ib_udata *udata)
 827 {
 828         struct mlx5_ib_ucontext *context =
 829                 rdma_udata_to_drv_context(
 830                         udata,
 831                         struct mlx5_ib_ucontext,
 832                         ibucontext);
 833
 834         if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP)
 835                 atomic_dec(&dev->delay_drop.rqs_cnt);
 836
 837         mlx5_ib_db_unmap_user(context, &rwq->db);
 838         ib_umem_release(rwq->umem);
 839 }
 840
 841 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 842                           struct ib_udata *udata, struct mlx5_ib_rwq *rwq,
 843                           struct mlx5_ib_create_wq *ucmd)
 844 {
 845         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
 846                 udata, struct mlx5_ib_ucontext, ibucontext);
 847         int page_shift = 0;
 848         int npages;
 849         u32 offset = 0;
 850         int ncont = 0;
 851         int err;
 852
 853         if (!ucmd->buf_addr)
 854                 return -EINVAL;
 855
 856         rwq->umem = ib_umem_get(&dev->ib_dev, ucmd->buf_addr, rwq->buf_size, 0);
 857         if (IS_ERR(rwq->umem)) {
 858                 mlx5_ib_dbg(dev, "umem_get failed\n");
 859                 err = PTR_ERR(rwq->umem);
 860                 return err;
 861         }
 862
 863         mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, 0, &npages, &page_shift,
 864                            &ncont, NULL);
 865         err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
 866                                      &rwq->rq_page_offset);
 867         if (err) {
 868                 mlx5_ib_warn(dev, "bad offset\n");
 869                 goto err_umem;
 870         }
 871
 872         rwq->rq_num_pas = ncont;
 873         rwq->page_shift = page_shift;
 874         rwq->log_page_size =  page_shift - MLX5_ADAPTER_PAGE_SHIFT;
 875         rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
 876
 877         mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
 878                     (unsigned long long)ucmd->buf_addr, rwq->buf_size,
 879                     npages, page_shift, ncont, offset);
 880
 881         err = mlx5_ib_db_map_user(ucontext, udata, ucmd->db_addr, &rwq->db);
 882         if (err) {
 883                 mlx5_ib_dbg(dev, "map failed\n");
 884                 goto err_umem;
 885         }
 886
 887         rwq->create_type = MLX5_WQ_USER;
 888         return 0;
 889
 890 err_umem:
 891         ib_umem_release(rwq->umem);
 892         return err;
 893 }
 894
 895 static int adjust_bfregn(struct mlx5_ib_dev *dev,
 896                          struct mlx5_bfreg_info *bfregi, int bfregn)
 897 {
 898         return bfregn / MLX5_NON_FP_BFREGS_PER_UAR * MLX5_BFREGS_PER_UAR +
 899                                 bfregn % MLX5_NON_FP_BFREGS_PER_UAR;
 900 }
 901
 902 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 903                           struct mlx5_ib_qp *qp, struct ib_udata *udata,
 904                           struct ib_qp_init_attr *attr,
 905                           u32 **in,
 906                           struct mlx5_ib_create_qp_resp *resp, int *inlen,
 907                           struct mlx5_ib_qp_base *base)
 908 {
 909         struct mlx5_ib_ucontext *context;
 910         struct mlx5_ib_create_qp ucmd;
 911         struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
 912         int page_shift = 0;
 913         int uar_index = 0;
 914         int npages;
 915         u32 offset = 0;
 916         int bfregn;
 917         int ncont = 0;
 918         __be64 *pas;
 919         void *qpc;
 920         int err;
 921         u16 uid;
 922
 923         err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
 924         if (err) {
 925                 mlx5_ib_dbg(dev, "copy failed\n");
 926                 return err;
 927         }
 928
 929         context = rdma_udata_to_drv_context(udata, struct mlx5_ib_ucontext,
 930                                             ibucontext);
 931         if (ucmd.flags & MLX5_QP_FLAG_BFREG_INDEX) {
 932                 uar_index = bfregn_to_uar_index(dev, &context->bfregi,
 933                                                 ucmd.bfreg_index, true);
 934                 if (uar_index < 0)
 935                         return uar_index;
 936
 937                 bfregn = MLX5_IB_INVALID_BFREG;
 938         } else if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL) {
 939                 /*
 940                  * TBD: should come from the verbs when we have the API
 941                  */
 942                 /* In CROSS_CHANNEL CQ and QP must use the same UAR */
 943                 bfregn = MLX5_CROSS_CHANNEL_BFREG;
 944         }
 945         else {
 946                 bfregn = alloc_bfreg(dev, &context->bfregi);
 947                 if (bfregn < 0)
 948                         return bfregn;
 949         }
 950
 951         mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index);
 952         if (bfregn != MLX5_IB_INVALID_BFREG)
 953                 uar_index = bfregn_to_uar_index(dev, &context->bfregi, bfregn,
 954                                                 false);
 955
 956         qp->rq.offset = 0;
 957         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 958         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 959
 960         err = set_user_buf_size(dev, qp, &ucmd, base, attr);
 961         if (err)
 962                 goto err_bfreg;
 963
 964         if (ucmd.buf_addr && ubuffer->buf_size) {
 965                 ubuffer->buf_addr = ucmd.buf_addr;
 966                 err = mlx5_ib_umem_get(dev, udata, ubuffer->buf_addr,
 967                                        ubuffer->buf_size, &ubuffer->umem,
 968                                        &npages, &page_shift, &ncont, &offset);
 969                 if (err)
 970                         goto err_bfreg;
 971         } else {
 972                 ubuffer->umem = NULL;
 973         }
 974
 975         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
 976                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont;
 977         *in = kvzalloc(*inlen, GFP_KERNEL);
 978         if (!*in) {
 979                 err = -ENOMEM;
 980                 goto err_umem;
 981         }
 982
 983         uid = (attr->qp_type != IB_QPT_XRC_TGT &&
 984                attr->qp_type != IB_QPT_XRC_INI) ? to_mpd(pd)->uid : 0;
 985         MLX5_SET(create_qp_in, *in, uid, uid);
 986         pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
 987         if (ubuffer->umem)
 988                 mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift, pas, 0);
 989
 990         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
 991
 992         MLX5_SET(qpc, qpc, log_page_size, page_shift - MLX5_ADAPTER_PAGE_SHIFT);
 993         MLX5_SET(qpc, qpc, page_offset, offset);
 994
 995         MLX5_SET(qpc, qpc, uar_page, uar_index);
 996         if (bfregn != MLX5_IB_INVALID_BFREG)
 997                 resp->bfreg_index = adjust_bfregn(dev, &context->bfregi, bfregn);
 998         else
 999                 resp->bfreg_index = MLX5_IB_INVALID_BFREG;
1000         qp->bfregn = bfregn;
1001
1002         err = mlx5_ib_db_map_user(context, udata, ucmd.db_addr, &qp->db);
1003         if (err) {
1004                 mlx5_ib_dbg(dev, "map failed\n");
1005                 goto err_free;
1006         }
1007
1008         err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
1009         if (err) {
1010                 mlx5_ib_dbg(dev, "copy failed\n");
1011                 goto err_unmap;
1012         }
1013         qp->create_type = MLX5_QP_USER;
1014
1015         return 0;
1016
1017 err_unmap:
1018         mlx5_ib_db_unmap_user(context, &qp->db);
1019
1020 err_free:
1021         kvfree(*in);
1022
1023 err_umem:
1024         ib_umem_release(ubuffer->umem);
1025
1026 err_bfreg:
1027         if (bfregn != MLX5_IB_INVALID_BFREG)
1028                 mlx5_ib_free_bfreg(dev, &context->bfregi, bfregn);
1029         return err;
1030 }
1031
1032 static void destroy_qp_user(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1033                             struct mlx5_ib_qp *qp, struct mlx5_ib_qp_base *base,
1034                             struct ib_udata *udata)
1035 {
1036         struct mlx5_ib_ucontext *context =
1037                 rdma_udata_to_drv_context(
1038                         udata,
1039                         struct mlx5_ib_ucontext,
1040                         ibucontext);
1041
1042         mlx5_ib_db_unmap_user(context, &qp->db);
1043         ib_umem_release(base->ubuffer.umem);
1044
1045         /*
1046          * Free only the BFREGs which are handled by the kernel.
1047          * BFREGs of UARs allocated dynamically are handled by user.
1048          */
1049         if (qp->bfregn != MLX5_IB_INVALID_BFREG)
1050                 mlx5_ib_free_bfreg(dev, &context->bfregi, qp->bfregn);
1051 }
1052
1053 /* get_sq_edge - Get the next nearby edge.
1054  *
1055  * An 'edge' is defined as the first following address after the end
1056  * of the fragment or the SQ. Accordingly, during the WQE construction
1057  * which repetitively increases the pointer to write the next data, it
1058  * simply should check if it gets to an edge.
1059  *
1060  * @sq - SQ buffer.
1061  * @idx - Stride index in the SQ buffer.
1062  *
1063  * Return:
1064  *      The new edge.
1065  */
1066 static void *get_sq_edge(struct mlx5_ib_wq *sq, u32 idx)
1067 {
1068         void *fragment_end;
1069
1070         fragment_end = mlx5_frag_buf_get_wqe
1071                 (&sq->fbc,
1072                  mlx5_frag_buf_get_idx_last_contig_stride(&sq->fbc, idx));
1073
1074         return fragment_end + MLX5_SEND_WQE_BB;
1075 }
1076
1077 static int create_kernel_qp(struct mlx5_ib_dev *dev,
1078                             struct ib_qp_init_attr *init_attr,
1079                             struct mlx5_ib_qp *qp,
1080                             u32 **in, int *inlen,
1081                             struct mlx5_ib_qp_base *base)
1082 {
1083         int uar_index;
1084         void *qpc;
1085         int err;
1086
1087         if (init_attr->create_flags & ~(IB_QP_CREATE_INTEGRITY_EN |
1088                                         IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1089                                         IB_QP_CREATE_IPOIB_UD_LSO |
1090                                         IB_QP_CREATE_NETIF_QP |
1091                                         MLX5_IB_QP_CREATE_SQPN_QP1 |
1092                                         MLX5_IB_QP_CREATE_WC_TEST))
1093                 return -EINVAL;
1094
1095         if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
1096                 qp->bf.bfreg = &dev->fp_bfreg;
1097         else if (init_attr->create_flags & MLX5_IB_QP_CREATE_WC_TEST)
1098                 qp->bf.bfreg = &dev->wc_bfreg;
1099         else
1100                 qp->bf.bfreg = &dev->bfreg;
1101
1102         /* We need to divide by two since each register is comprised of
1103          * two buffers of identical size, namely odd and even
1104          */
1105         qp->bf.buf_size = (1 << MLX5_CAP_GEN(dev->mdev, log_bf_reg_size)) / 2;
1106         uar_index = qp->bf.bfreg->index;
1107
1108         err = calc_sq_size(dev, init_attr, qp);
1109         if (err < 0) {
1110                 mlx5_ib_dbg(dev, "err %d\n", err);
1111                 return err;
1112         }
1113
1114         qp->rq.offset = 0;
1115         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
1116         base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
1117
1118         err = mlx5_frag_buf_alloc_node(dev->mdev, base->ubuffer.buf_size,
1119                                        &qp->buf, dev->mdev->priv.numa_node);
1120         if (err) {
1121                 mlx5_ib_dbg(dev, "err %d\n", err);
1122                 return err;
1123         }
1124
1125         if (qp->rq.wqe_cnt)
1126                 mlx5_init_fbc(qp->buf.frags, qp->rq.wqe_shift,
1127                               ilog2(qp->rq.wqe_cnt), &qp->rq.fbc);
1128
1129         if (qp->sq.wqe_cnt) {
1130                 int sq_strides_offset = (qp->sq.offset  & (PAGE_SIZE - 1)) /
1131                                         MLX5_SEND_WQE_BB;
1132                 mlx5_init_fbc_offset(qp->buf.frags +
1133                                      (qp->sq.offset / PAGE_SIZE),
1134                                      ilog2(MLX5_SEND_WQE_BB),
1135                                      ilog2(qp->sq.wqe_cnt),
1136                                      sq_strides_offset, &qp->sq.fbc);
1137
1138                 qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
1139         }
1140
1141         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
1142                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages;
1143         *in = kvzalloc(*inlen, GFP_KERNEL);
1144         if (!*in) {
1145                 err = -ENOMEM;
1146                 goto err_buf;
1147         }
1148
1149         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
1150         MLX5_SET(qpc, qpc, uar_page, uar_index);
1151         MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1152
1153         /* Set "fast registration enabled" for all kernel QPs */
1154         MLX5_SET(qpc, qpc, fre, 1);
1155         MLX5_SET(qpc, qpc, rlky, 1);
1156
1157         if (init_attr->create_flags & MLX5_IB_QP_CREATE_SQPN_QP1) {
1158                 MLX5_SET(qpc, qpc, deth_sqpn, 1);
1159                 qp->flags |= MLX5_IB_QP_SQPN_QP1;
1160         }
1161
1162         mlx5_fill_page_frag_array(&qp->buf,
1163                                   (__be64 *)MLX5_ADDR_OF(create_qp_in,
1164                                                          *in, pas));
1165
1166         err = mlx5_db_alloc(dev->mdev, &qp->db);
1167         if (err) {
1168                 mlx5_ib_dbg(dev, "err %d\n", err);
1169                 goto err_free;
1170         }
1171
1172         qp->sq.wrid = kvmalloc_array(qp->sq.wqe_cnt,
1173                                      sizeof(*qp->sq.wrid), GFP_KERNEL);
1174         qp->sq.wr_data = kvmalloc_array(qp->sq.wqe_cnt,
1175                                         sizeof(*qp->sq.wr_data), GFP_KERNEL);
1176         qp->rq.wrid = kvmalloc_array(qp->rq.wqe_cnt,
1177                                      sizeof(*qp->rq.wrid), GFP_KERNEL);
1178         qp->sq.w_list = kvmalloc_array(qp->sq.wqe_cnt,
1179                                        sizeof(*qp->sq.w_list), GFP_KERNEL);
1180         qp->sq.wqe_head = kvmalloc_array(qp->sq.wqe_cnt,
1181                                          sizeof(*qp->sq.wqe_head), GFP_KERNEL);
1182
1183         if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
1184             !qp->sq.w_list || !qp->sq.wqe_head) {
1185                 err = -ENOMEM;
1186                 goto err_wrid;
1187         }
1188         qp->create_type = MLX5_QP_KERNEL;
1189
1190         return 0;
1191
1192 err_wrid:
1193         kvfree(qp->sq.wqe_head);
1194         kvfree(qp->sq.w_list);
1195         kvfree(qp->sq.wrid);
1196         kvfree(qp->sq.wr_data);
1197         kvfree(qp->rq.wrid);
1198         mlx5_db_free(dev->mdev, &qp->db);
1199
1200 err_free:
1201         kvfree(*in);
1202
1203 err_buf:
1204         mlx5_frag_buf_free(dev->mdev, &qp->buf);
1205         return err;
1206 }
1207
1208 static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1209 {
1210         kvfree(qp->sq.wqe_head);
1211         kvfree(qp->sq.w_list);
1212         kvfree(qp->sq.wrid);
1213         kvfree(qp->sq.wr_data);
1214         kvfree(qp->rq.wrid);
1215         mlx5_db_free(dev->mdev, &qp->db);
1216         mlx5_frag_buf_free(dev->mdev, &qp->buf);
1217 }
1218
1219 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
1220 {
1221         if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
1222             (attr->qp_type == MLX5_IB_QPT_DCI) ||
1223             (attr->qp_type == IB_QPT_XRC_INI))
1224                 return MLX5_SRQ_RQ;
1225         else if (!qp->has_rq)
1226                 return MLX5_ZERO_LEN_RQ;
1227         else
1228                 return MLX5_NON_ZERO_RQ;
1229 }
1230
1231 static int is_connected(enum ib_qp_type qp_type)
1232 {
1233         if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC ||
1234             qp_type == MLX5_IB_QPT_DCI)
1235                 return 1;
1236
1237         return 0;
1238 }
1239
1240 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1241                                     struct mlx5_ib_qp *qp,
1242                                     struct mlx5_ib_sq *sq, u32 tdn,
1243                                     struct ib_pd *pd)
1244 {
1245         u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
1246         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1247
1248         MLX5_SET(create_tis_in, in, uid, to_mpd(pd)->uid);
1249         MLX5_SET(tisc, tisc, transport_domain, tdn);
1250         if (qp->flags & MLX5_IB_QP_UNDERLAY)
1251                 MLX5_SET(tisc, tisc, underlay_qpn, qp->underlay_qpn);
1252
1253         return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
1254 }
1255
1256 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1257                                       struct mlx5_ib_sq *sq, struct ib_pd *pd)
1258 {
1259         mlx5_cmd_destroy_tis(dev->mdev, sq->tisn, to_mpd(pd)->uid);
1260 }
1261
1262 static void destroy_flow_rule_vport_sq(struct mlx5_ib_sq *sq)
1263 {
1264         if (sq->flow_rule)
1265                 mlx5_del_flow_rules(sq->flow_rule);
1266         sq->flow_rule = NULL;
1267 }
1268
1269 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1270                                    struct ib_udata *udata,
1271                                    struct mlx5_ib_sq *sq, void *qpin,
1272                                    struct ib_pd *pd)
1273 {
1274         struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1275         __be64 *pas;
1276         void *in;
1277         void *sqc;
1278         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1279         void *wq;
1280         int inlen;
1281         int err;
1282         int page_shift = 0;
1283         int npages;
1284         int ncont = 0;
1285         u32 offset = 0;
1286
1287         err = mlx5_ib_umem_get(dev, udata, ubuffer->buf_addr, ubuffer->buf_size,
1288                                &sq->ubuffer.umem, &npages, &page_shift, &ncont,
1289                                &offset);
1290         if (err)
1291                 return err;
1292
1293         inlen = MLX5_ST_SZ_BYTES(create_sq_in) + sizeof(u64) * ncont;
1294         in = kvzalloc(inlen, GFP_KERNEL);
1295         if (!in) {
1296                 err = -ENOMEM;
1297                 goto err_umem;
1298         }
1299
1300         MLX5_SET(create_sq_in, in, uid, to_mpd(pd)->uid);
1301         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1302         MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1303         if (MLX5_CAP_ETH(dev->mdev, multi_pkt_send_wqe))
1304                 MLX5_SET(sqc, sqc, allow_multi_pkt_send_wqe, 1);
1305         MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1306         MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1307         MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1308         MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1309         MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1310         if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
1311             MLX5_CAP_ETH(dev->mdev, swp))
1312                 MLX5_SET(sqc, sqc, allow_swp, 1);
1313
1314         wq = MLX5_ADDR_OF(sqc, sqc, wq);
1315         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1316         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1317         MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1318         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1319         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1320         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1321         MLX5_SET(wq, wq, log_wq_pg_sz,  page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1322         MLX5_SET(wq, wq, page_offset, offset);
1323
1324         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1325         mlx5_ib_populate_pas(dev, sq->ubuffer.umem, page_shift, pas, 0);
1326
1327         err = mlx5_core_create_sq_tracked(dev->mdev, in, inlen, &sq->base.mqp);
1328
1329         kvfree(in);
1330
1331         if (err)
1332                 goto err_umem;
1333
1334         return 0;
1335
1336 err_umem:
1337         ib_umem_release(sq->ubuffer.umem);
1338         sq->ubuffer.umem = NULL;
1339
1340         return err;
1341 }
1342
1343 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1344                                      struct mlx5_ib_sq *sq)
1345 {
1346         destroy_flow_rule_vport_sq(sq);
1347         mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
1348         ib_umem_release(sq->ubuffer.umem);
1349 }
1350
1351 static size_t get_rq_pas_size(void *qpc)
1352 {
1353         u32 log_page_size = MLX5_GET(qpc, qpc, log_page_size) + 12;
1354         u32 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride);
1355         u32 log_rq_size   = MLX5_GET(qpc, qpc, log_rq_size);
1356         u32 page_offset   = MLX5_GET(qpc, qpc, page_offset);
1357         u32 po_quanta     = 1 << (log_page_size - 6);
1358         u32 rq_sz         = 1 << (log_rq_size + 4 + log_rq_stride);
1359         u32 page_size     = 1 << log_page_size;
1360         u32 rq_sz_po      = rq_sz + (page_offset * po_quanta);
1361         u32 rq_num_pas    = (rq_sz_po + page_size - 1) / page_size;
1362
1363         return rq_num_pas * sizeof(u64);
1364 }
1365
1366 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1367                                    struct mlx5_ib_rq *rq, void *qpin,
1368                                    size_t qpinlen, struct ib_pd *pd)
1369 {
1370         struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1371         __be64 *pas;
1372         __be64 *qp_pas;
1373         void *in;
1374         void *rqc;
1375         void *wq;
1376         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1377         size_t rq_pas_size = get_rq_pas_size(qpc);
1378         size_t inlen;
1379         int err;
1380
1381         if (qpinlen < rq_pas_size + MLX5_BYTE_OFF(create_qp_in, pas))
1382                 return -EINVAL;
1383
1384         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
1385         in = kvzalloc(inlen, GFP_KERNEL);
1386         if (!in)
1387                 return -ENOMEM;
1388
1389         MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
1390         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1391         if (!(rq->flags & MLX5_IB_RQ_CVLAN_STRIPPING))
1392                 MLX5_SET(rqc, rqc, vsd, 1);
1393         MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1394         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1395         MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1396         MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1397         MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1398
1399         if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)
1400                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1401
1402         wq = MLX5_ADDR_OF(rqc, rqc, wq);
1403         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1404         if (rq->flags & MLX5_IB_RQ_PCI_WRITE_END_PADDING)
1405                 MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1406         MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
1407         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1408         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1409         MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1410         MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(qpc, qpc, log_page_size));
1411         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1412
1413         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1414         qp_pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, qpin, pas);
1415         memcpy(pas, qp_pas, rq_pas_size);
1416
1417         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rq->base.mqp);
1418
1419         kvfree(in);
1420
1421         return err;
1422 }
1423
1424 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1425                                      struct mlx5_ib_rq *rq)
1426 {
1427         mlx5_core_destroy_rq_tracked(dev->mdev, &rq->base.mqp);
1428 }
1429
1430 static bool tunnel_offload_supported(struct mlx5_core_dev *dev)
1431 {
1432         return  (MLX5_CAP_ETH(dev, tunnel_stateless_vxlan) ||
1433                  MLX5_CAP_ETH(dev, tunnel_stateless_gre) ||
1434                  MLX5_CAP_ETH(dev, tunnel_stateless_geneve_rx));
1435 }
1436
1437 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1438                                       struct mlx5_ib_rq *rq,
1439                                       u32 qp_flags_en,
1440                                       struct ib_pd *pd)
1441 {
1442         if (qp_flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1443                            MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1444                 mlx5_ib_disable_lb(dev, false, true);
1445         mlx5_cmd_destroy_tir(dev->mdev, rq->tirn, to_mpd(pd)->uid);
1446 }
1447
1448 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1449                                     struct mlx5_ib_rq *rq, u32 tdn,
1450                                     u32 *qp_flags_en,
1451                                     struct ib_pd *pd,
1452                                     u32 *out, int outlen)
1453 {
1454         u8 lb_flag = 0;
1455         u32 *in;
1456         void *tirc;
1457         int inlen;
1458         int err;
1459
1460         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1461         in = kvzalloc(inlen, GFP_KERNEL);
1462         if (!in)
1463                 return -ENOMEM;
1464
1465         MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1466         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1467         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1468         MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1469         MLX5_SET(tirc, tirc, transport_domain, tdn);
1470         if (*qp_flags_en & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1471                 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1472
1473         if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC)
1474                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1475
1476         if (*qp_flags_en & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)
1477                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1478
1479         if (dev->is_rep) {
1480                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1481                 *qp_flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1482         }
1483
1484         MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1485
1486         err = mlx5_core_create_tir_out(dev->mdev, in, inlen, out, outlen);
1487
1488         rq->tirn = MLX5_GET(create_tir_out, out, tirn);
1489         if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1490                 err = mlx5_ib_enable_lb(dev, false, true);
1491
1492                 if (err)
1493                         destroy_raw_packet_qp_tir(dev, rq, 0, pd);
1494         }
1495         kvfree(in);
1496
1497         return err;
1498 }
1499
1500 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1501                                 u32 *in, size_t inlen,
1502                                 struct ib_pd *pd,
1503                                 struct ib_udata *udata,
1504                                 struct mlx5_ib_create_qp_resp *resp)
1505 {
1506         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1507         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1508         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1509         struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1510                 udata, struct mlx5_ib_ucontext, ibucontext);
1511         int err;
1512         u32 tdn = mucontext->tdn;
1513         u16 uid = to_mpd(pd)->uid;
1514         u32 out[MLX5_ST_SZ_DW(create_tir_out)] = {};
1515
1516         if (qp->sq.wqe_cnt) {
1517                 err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd);
1518                 if (err)
1519                         return err;
1520
1521                 err = create_raw_packet_qp_sq(dev, udata, sq, in, pd);
1522                 if (err)
1523                         goto err_destroy_tis;
1524
1525                 if (uid) {
1526                         resp->tisn = sq->tisn;
1527                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN;
1528                         resp->sqn = sq->base.mqp.qpn;
1529                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN;
1530                 }
1531
1532                 sq->base.container_mibqp = qp;
1533                 sq->base.mqp.event = mlx5_ib_qp_event;
1534         }
1535
1536         if (qp->rq.wqe_cnt) {
1537                 rq->base.container_mibqp = qp;
1538
1539                 if (qp->flags & MLX5_IB_QP_CVLAN_STRIPPING)
1540                         rq->flags |= MLX5_IB_RQ_CVLAN_STRIPPING;
1541                 if (qp->flags & MLX5_IB_QP_PCI_WRITE_END_PADDING)
1542                         rq->flags |= MLX5_IB_RQ_PCI_WRITE_END_PADDING;
1543                 err = create_raw_packet_qp_rq(dev, rq, in, inlen, pd);
1544                 if (err)
1545                         goto err_destroy_sq;
1546
1547                 err = create_raw_packet_qp_tir(
1548                         dev, rq, tdn, &qp->flags_en, pd, out,
1549                         MLX5_ST_SZ_BYTES(create_tir_out));
1550                 if (err)
1551                         goto err_destroy_rq;
1552
1553                 if (uid) {
1554                         resp->rqn = rq->base.mqp.qpn;
1555                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN;
1556                         resp->tirn = rq->tirn;
1557                         resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1558                         if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner)) {
1559                                 resp->tir_icm_addr = MLX5_GET(
1560                                         create_tir_out, out, icm_address_31_0);
1561                                 resp->tir_icm_addr |=
1562                                         (u64)MLX5_GET(create_tir_out, out,
1563                                                       icm_address_39_32)
1564                                         << 32;
1565                                 resp->tir_icm_addr |=
1566                                         (u64)MLX5_GET(create_tir_out, out,
1567                                                       icm_address_63_40)
1568                                         << 40;
1569                                 resp->comp_mask |=
1570                                         MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1571                         }
1572                 }
1573         }
1574
1575         qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1576                                                      rq->base.mqp.qpn;
1577         err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp)));
1578         if (err)
1579                 goto err_destroy_tir;
1580
1581         return 0;
1582
1583 err_destroy_tir:
1584         destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, pd);
1585 err_destroy_rq:
1586         destroy_raw_packet_qp_rq(dev, rq);
1587 err_destroy_sq:
1588         if (!qp->sq.wqe_cnt)
1589                 return err;
1590         destroy_raw_packet_qp_sq(dev, sq);
1591 err_destroy_tis:
1592         destroy_raw_packet_qp_tis(dev, sq, pd);
1593
1594         return err;
1595 }
1596
1597 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1598                                   struct mlx5_ib_qp *qp)
1599 {
1600         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1601         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1602         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1603
1604         if (qp->rq.wqe_cnt) {
1605                 destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, qp->ibqp.pd);
1606                 destroy_raw_packet_qp_rq(dev, rq);
1607         }
1608
1609         if (qp->sq.wqe_cnt) {
1610                 destroy_raw_packet_qp_sq(dev, sq);
1611                 destroy_raw_packet_qp_tis(dev, sq, qp->ibqp.pd);
1612         }
1613 }
1614
1615 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1616                                     struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1617 {
1618         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1619         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1620
1621         sq->sq = &qp->sq;
1622         rq->rq = &qp->rq;
1623         sq->doorbell = &qp->db;
1624         rq->doorbell = &qp->db;
1625 }
1626
1627 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1628 {
1629         if (qp->flags_en & (MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1630                             MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC))
1631                 mlx5_ib_disable_lb(dev, false, true);
1632         mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1633                              to_mpd(qp->ibqp.pd)->uid);
1634 }
1635
1636 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1637                                  struct ib_pd *pd,
1638                                  struct ib_qp_init_attr *init_attr,
1639                                  struct ib_udata *udata)
1640 {
1641         struct mlx5_ib_ucontext *mucontext = rdma_udata_to_drv_context(
1642                 udata, struct mlx5_ib_ucontext, ibucontext);
1643         struct mlx5_ib_create_qp_resp resp = {};
1644         int inlen;
1645         int outlen;
1646         int err;
1647         u32 *in;
1648         u32 *out;
1649         void *tirc;
1650         void *hfso;
1651         u32 selected_fields = 0;
1652         u32 outer_l4;
1653         size_t min_resp_len;
1654         u32 tdn = mucontext->tdn;
1655         struct mlx5_ib_create_qp_rss ucmd = {};
1656         size_t required_cmd_sz;
1657         u8 lb_flag = 0;
1658
1659         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1660                 return -EOPNOTSUPP;
1661
1662         if (init_attr->create_flags || init_attr->send_cq)
1663                 return -EINVAL;
1664
1665         min_resp_len = offsetof(typeof(resp), bfreg_index) + sizeof(resp.bfreg_index);
1666         if (udata->outlen < min_resp_len)
1667                 return -EINVAL;
1668
1669         required_cmd_sz = offsetof(typeof(ucmd), flags) + sizeof(ucmd.flags);
1670         if (udata->inlen < required_cmd_sz) {
1671                 mlx5_ib_dbg(dev, "invalid inlen\n");
1672                 return -EINVAL;
1673         }
1674
1675         if (udata->inlen > sizeof(ucmd) &&
1676             !ib_is_udata_cleared(udata, sizeof(ucmd),
1677                                  udata->inlen - sizeof(ucmd))) {
1678                 mlx5_ib_dbg(dev, "inlen is not supported\n");
1679                 return -EOPNOTSUPP;
1680         }
1681
1682         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
1683                 mlx5_ib_dbg(dev, "copy failed\n");
1684                 return -EFAULT;
1685         }
1686
1687         if (ucmd.comp_mask) {
1688                 mlx5_ib_dbg(dev, "invalid comp mask\n");
1689                 return -EOPNOTSUPP;
1690         }
1691
1692         if (ucmd.flags & ~(MLX5_QP_FLAG_TUNNEL_OFFLOADS |
1693                            MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
1694                            MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC)) {
1695                 mlx5_ib_dbg(dev, "invalid flags\n");
1696                 return -EOPNOTSUPP;
1697         }
1698
1699         if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS &&
1700             !tunnel_offload_supported(dev->mdev)) {
1701                 mlx5_ib_dbg(dev, "tunnel offloads isn't supported\n");
1702                 return -EOPNOTSUPP;
1703         }
1704
1705         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER &&
1706             !(ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)) {
1707                 mlx5_ib_dbg(dev, "Tunnel offloads must be set for inner RSS\n");
1708                 return -EOPNOTSUPP;
1709         }
1710
1711         if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC || dev->is_rep) {
1712                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_UNICAST;
1713                 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
1714         }
1715
1716         if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) {
1717                 lb_flag |= MLX5_TIRC_SELF_LB_BLOCK_BLOCK_MULTICAST;
1718                 qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC;
1719         }
1720
1721         err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
1722         if (err) {
1723                 mlx5_ib_dbg(dev, "copy failed\n");
1724                 return -EINVAL;
1725         }
1726
1727         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1728         outlen = MLX5_ST_SZ_BYTES(create_tir_out);
1729         in = kvzalloc(inlen + outlen, GFP_KERNEL);
1730         if (!in)
1731                 return -ENOMEM;
1732
1733         out = in + MLX5_ST_SZ_DW(create_tir_in);
1734         MLX5_SET(create_tir_in, in, uid, to_mpd(pd)->uid);
1735         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1736         MLX5_SET(tirc, tirc, disp_type,
1737                  MLX5_TIRC_DISP_TYPE_INDIRECT);
1738         MLX5_SET(tirc, tirc, indirect_table,
1739                  init_attr->rwq_ind_tbl->ind_tbl_num);
1740         MLX5_SET(tirc, tirc, transport_domain, tdn);
1741
1742         hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1743
1744         if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS)
1745                 MLX5_SET(tirc, tirc, tunneled_offload_en, 1);
1746
1747         MLX5_SET(tirc, tirc, self_lb_block, lb_flag);
1748
1749         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_INNER)
1750                 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner);
1751         else
1752                 hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1753
1754         switch (ucmd.rx_hash_function) {
1755         case MLX5_RX_HASH_FUNC_TOEPLITZ:
1756         {
1757                 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1758                 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1759
1760                 if (len != ucmd.rx_key_len) {
1761                         err = -EINVAL;
1762                         goto err;
1763                 }
1764
1765                 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1766                 memcpy(rss_key, ucmd.rx_hash_key, len);
1767                 break;
1768         }
1769         default:
1770                 err = -EOPNOTSUPP;
1771                 goto err;
1772         }
1773
1774         if (!ucmd.rx_hash_fields_mask) {
1775                 /* special case when this TIR serves as steering entry without hashing */
1776                 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1777                         goto create_tir;
1778                 err = -EINVAL;
1779                 goto err;
1780         }
1781
1782         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1783              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1784              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1785              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1786                 err = -EINVAL;
1787                 goto err;
1788         }
1789
1790         /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1791         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1792             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1793                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1794                          MLX5_L3_PROT_TYPE_IPV4);
1795         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1796                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1797                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1798                          MLX5_L3_PROT_TYPE_IPV6);
1799
1800         outer_l4 = ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1801                     (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) << 0 |
1802                    ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1803                     (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP)) << 1 |
1804                    (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI) << 2;
1805
1806         /* Check that only one l4 protocol is set */
1807         if (outer_l4 & (outer_l4 - 1)) {
1808                 err = -EINVAL;
1809                 goto err;
1810         }
1811
1812         /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1813         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1814             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1815                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1816                          MLX5_L4_PROT_TYPE_TCP);
1817         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1818                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1819                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1820                          MLX5_L4_PROT_TYPE_UDP);
1821
1822         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1823             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1824                 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1825
1826         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1827             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1828                 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1829
1830         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1831             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1832                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1833
1834         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1835             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1836                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1837
1838         if (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_IPSEC_SPI)
1839                 selected_fields |= MLX5_HASH_FIELD_SEL_IPSEC_SPI;
1840
1841         MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1842
1843 create_tir:
1844         err = mlx5_core_create_tir_out(dev->mdev, in, inlen, out, outlen);
1845
1846         qp->rss_qp.tirn = MLX5_GET(create_tir_out, out, tirn);
1847         if (!err && MLX5_GET(tirc, tirc, self_lb_block)) {
1848                 err = mlx5_ib_enable_lb(dev, false, true);
1849
1850                 if (err)
1851                         mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn,
1852                                              to_mpd(pd)->uid);
1853         }
1854
1855         if (err)
1856                 goto err;
1857
1858         if (mucontext->devx_uid) {
1859                 resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN;
1860                 resp.tirn = qp->rss_qp.tirn;
1861                 if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, sw_owner)) {
1862                         resp.tir_icm_addr =
1863                                 MLX5_GET(create_tir_out, out, icm_address_31_0);
1864                         resp.tir_icm_addr |= (u64)MLX5_GET(create_tir_out, out,
1865                                                            icm_address_39_32)
1866                                              << 32;
1867                         resp.tir_icm_addr |= (u64)MLX5_GET(create_tir_out, out,
1868                                                            icm_address_63_40)
1869                                              << 40;
1870                         resp.comp_mask |=
1871                                 MLX5_IB_CREATE_QP_RESP_MASK_TIR_ICM_ADDR;
1872                 }
1873         }
1874
1875         err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp)));
1876         if (err)
1877                 goto err_copy;
1878
1879         kvfree(in);
1880         /* qpn is reserved for that QP */
1881         qp->trans_qp.base.mqp.qpn = 0;
1882         qp->flags |= MLX5_IB_QP_RSS;
1883         return 0;
1884
1885 err_copy:
1886         mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn, mucontext->devx_uid);
1887 err:
1888         kvfree(in);
1889         return err;
1890 }
1891
1892 static void configure_responder_scat_cqe(struct ib_qp_init_attr *init_attr,
1893                                          void *qpc)
1894 {
1895         int rcqe_sz;
1896
1897         if (init_attr->qp_type == MLX5_IB_QPT_DCI)
1898                 return;
1899
1900         rcqe_sz = mlx5_ib_get_cqe_size(init_attr->recv_cq);
1901
1902         if (init_attr->qp_type == MLX5_IB_QPT_DCT) {
1903                 if (rcqe_sz == 128)
1904                         MLX5_SET(dctc, qpc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
1905
1906                 return;
1907         }
1908
1909         MLX5_SET(qpc, qpc, cs_res,
1910                  rcqe_sz == 128 ? MLX5_RES_SCAT_DATA64_CQE :
1911                                   MLX5_RES_SCAT_DATA32_CQE);
1912 }
1913
1914 static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
1915                                          struct ib_qp_init_attr *init_attr,
1916                                          struct mlx5_ib_create_qp *ucmd,
1917                                          void *qpc)
1918 {
1919         enum ib_qp_type qpt = init_attr->qp_type;
1920         int scqe_sz;
1921         bool allow_scat_cqe = false;
1922
1923         if (qpt == IB_QPT_UC || qpt == IB_QPT_UD)
1924                 return;
1925
1926         if (ucmd)
1927                 allow_scat_cqe = ucmd->flags & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
1928
1929         if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR)
1930                 return;
1931
1932         scqe_sz = mlx5_ib_get_cqe_size(init_attr->send_cq);
1933         if (scqe_sz == 128) {
1934                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
1935                 return;
1936         }
1937
1938         if (init_attr->qp_type != MLX5_IB_QPT_DCI ||
1939             MLX5_CAP_GEN(dev->mdev, dc_req_scat_data_cqe))
1940                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
1941 }
1942
1943 static int atomic_size_to_mode(int size_mask)
1944 {
1945         /* driver does not support atomic_size > 256B
1946          * and does not know how to translate bigger sizes
1947          */
1948         int supported_size_mask = size_mask & 0x1ff;
1949         int log_max_size;
1950
1951         if (!supported_size_mask)
1952                 return -EOPNOTSUPP;
1953
1954         log_max_size = __fls(supported_size_mask);
1955
1956         if (log_max_size > 3)
1957                 return log_max_size;
1958
1959         return MLX5_ATOMIC_MODE_8B;
1960 }
1961
1962 static int get_atomic_mode(struct mlx5_ib_dev *dev,
1963                            enum ib_qp_type qp_type)
1964 {
1965         u8 atomic_operations = MLX5_CAP_ATOMIC(dev->mdev, atomic_operations);
1966         u8 atomic = MLX5_CAP_GEN(dev->mdev, atomic);
1967         int atomic_mode = -EOPNOTSUPP;
1968         int atomic_size_mask;
1969
1970         if (!atomic)
1971                 return -EOPNOTSUPP;
1972
1973         if (qp_type == MLX5_IB_QPT_DCT)
1974                 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_dc);
1975         else
1976                 atomic_size_mask = MLX5_CAP_ATOMIC(dev->mdev, atomic_size_qp);
1977
1978         if ((atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_CMP_SWAP) ||
1979             (atomic_operations & MLX5_ATOMIC_OPS_EXTENDED_FETCH_ADD))
1980                 atomic_mode = atomic_size_to_mode(atomic_size_mask);
1981
1982         if (atomic_mode <= 0 &&
1983             (atomic_operations & MLX5_ATOMIC_OPS_CMP_SWAP &&
1984              atomic_operations & MLX5_ATOMIC_OPS_FETCH_ADD))
1985                 atomic_mode = MLX5_ATOMIC_MODE_IB_COMP;
1986
1987         return atomic_mode;
1988 }
1989
1990 static inline bool check_flags_mask(uint64_t input, uint64_t supported)
1991 {
1992         return (input & ~supported) == 0;
1993 }
1994
1995 static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1996                             struct ib_qp_init_attr *init_attr,
1997                             struct ib_udata *udata, struct mlx5_ib_qp *qp)
1998 {
1999         struct mlx5_ib_resources *devr = &dev->devr;
2000         int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
2001         struct mlx5_core_dev *mdev = dev->mdev;
2002         struct mlx5_ib_create_qp_resp resp = {};
2003         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2004                 udata, struct mlx5_ib_ucontext, ibucontext);
2005         struct mlx5_ib_cq *send_cq;
2006         struct mlx5_ib_cq *recv_cq;
2007         unsigned long flags;
2008         u32 uidx = MLX5_IB_DEFAULT_UIDX;
2009         struct mlx5_ib_create_qp ucmd;
2010         struct mlx5_ib_qp_base *base;
2011         int mlx5_st;
2012         void *qpc;
2013         u32 *in;
2014         int err;
2015
2016         mutex_init(&qp->mutex);
2017         spin_lock_init(&qp->sq.lock);
2018         spin_lock_init(&qp->rq.lock);
2019
2020         mlx5_st = to_mlx5_st(init_attr->qp_type);
2021         if (mlx5_st < 0)
2022                 return -EINVAL;
2023
2024         if (init_attr->rwq_ind_tbl) {
2025                 if (!udata)
2026                         return -ENOSYS;
2027
2028                 err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
2029                 return err;
2030         }
2031
2032         if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
2033                 if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
2034                         mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
2035                         return -EINVAL;
2036                 } else {
2037                         qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
2038                 }
2039         }
2040
2041         if (init_attr->create_flags &
2042                         (IB_QP_CREATE_CROSS_CHANNEL |
2043                          IB_QP_CREATE_MANAGED_SEND |
2044                          IB_QP_CREATE_MANAGED_RECV)) {
2045                 if (!MLX5_CAP_GEN(mdev, cd)) {
2046                         mlx5_ib_dbg(dev, "cross-channel isn't supported\n");
2047                         return -EINVAL;
2048                 }
2049                 if (init_attr->create_flags & IB_QP_CREATE_CROSS_CHANNEL)
2050                         qp->flags |= MLX5_IB_QP_CROSS_CHANNEL;
2051                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_SEND)
2052                         qp->flags |= MLX5_IB_QP_MANAGED_SEND;
2053                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_RECV)
2054                         qp->flags |= MLX5_IB_QP_MANAGED_RECV;
2055         }
2056
2057         if (init_attr->qp_type == IB_QPT_UD &&
2058             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO))
2059                 if (!MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
2060                         mlx5_ib_dbg(dev, "ipoib UD lso qp isn't supported\n");
2061                         return -EOPNOTSUPP;
2062                 }
2063
2064         if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {
2065                 if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2066                         mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");
2067                         return -EOPNOTSUPP;
2068                 }
2069                 if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||
2070                     !MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
2071                         mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");
2072                         return -EOPNOTSUPP;
2073                 }
2074                 qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;
2075         }
2076
2077         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
2078                 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
2079
2080         if (init_attr->create_flags & IB_QP_CREATE_CVLAN_STRIPPING) {
2081                 if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
2082                       MLX5_CAP_ETH(dev->mdev, vlan_cap)) ||
2083                     (init_attr->qp_type != IB_QPT_RAW_PACKET))
2084                         return -EOPNOTSUPP;
2085                 qp->flags |= MLX5_IB_QP_CVLAN_STRIPPING;
2086         }
2087
2088         if (udata) {
2089                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
2090                         mlx5_ib_dbg(dev, "copy failed\n");
2091                         return -EFAULT;
2092                 }
2093
2094                 if (!check_flags_mask(ucmd.flags,
2095                                       MLX5_QP_FLAG_ALLOW_SCATTER_CQE |
2096                                       MLX5_QP_FLAG_BFREG_INDEX |
2097                                       MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE |
2098                                       MLX5_QP_FLAG_SCATTER_CQE |
2099                                       MLX5_QP_FLAG_SIGNATURE |
2100                                       MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC |
2101                                       MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC |
2102                                       MLX5_QP_FLAG_TUNNEL_OFFLOADS |
2103                                       MLX5_QP_FLAG_TYPE_DCI |
2104                                       MLX5_QP_FLAG_TYPE_DCT))
2105                         return -EINVAL;
2106
2107                 err = get_qp_user_index(ucontext, &ucmd, udata->inlen, &uidx);
2108                 if (err)
2109                         return err;
2110
2111                 qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
2112                 if (MLX5_CAP_GEN(dev->mdev, sctr_data_cqe))
2113                         qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
2114                 if (ucmd.flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS) {
2115                         if (init_attr->qp_type != IB_QPT_RAW_PACKET ||
2116                             !tunnel_offload_supported(mdev)) {
2117                                 mlx5_ib_dbg(dev, "Tunnel offload isn't supported\n");
2118                                 return -EOPNOTSUPP;
2119                         }
2120                         qp->flags_en |= MLX5_QP_FLAG_TUNNEL_OFFLOADS;
2121                 }
2122
2123                 if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC) {
2124                         if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2125                                 mlx5_ib_dbg(dev, "Self-LB UC isn't supported\n");
2126                                 return -EOPNOTSUPP;
2127                         }
2128                         qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_UC;
2129                 }
2130
2131                 if (ucmd.flags & MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC) {
2132                         if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2133                                 mlx5_ib_dbg(dev, "Self-LB UM isn't supported\n");
2134                                 return -EOPNOTSUPP;
2135                         }
2136                         qp->flags_en |= MLX5_QP_FLAG_TIR_ALLOW_SELF_LB_MC;
2137                 }
2138
2139                 if (ucmd.flags & MLX5_QP_FLAG_PACKET_BASED_CREDIT_MODE) {
2140                         if (init_attr->qp_type != IB_QPT_RC ||
2141                                 !MLX5_CAP_GEN(dev->mdev, qp_packet_based)) {
2142                                 mlx5_ib_dbg(dev, "packet based credit mode isn't supported\n");
2143                                 return -EOPNOTSUPP;
2144                         }
2145                         qp->flags |= MLX5_IB_QP_PACKET_BASED_CREDIT;
2146                 }
2147
2148                 if (init_attr->create_flags & IB_QP_CREATE_SOURCE_QPN) {
2149                         if (init_attr->qp_type != IB_QPT_UD ||
2150                             (MLX5_CAP_GEN(dev->mdev, port_type) !=
2151                              MLX5_CAP_PORT_TYPE_IB) ||
2152                             !mlx5_get_flow_namespace(dev->mdev, MLX5_FLOW_NAMESPACE_BYPASS)) {
2153                                 mlx5_ib_dbg(dev, "Source QP option isn't supported\n");
2154                                 return -EOPNOTSUPP;
2155                         }
2156
2157                         qp->flags |= MLX5_IB_QP_UNDERLAY;
2158                         qp->underlay_qpn = init_attr->source_qpn;
2159                 }
2160         } else {
2161                 qp->wq_sig = !!wq_signature;
2162         }
2163
2164         base = (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2165                 qp->flags & MLX5_IB_QP_UNDERLAY) ?
2166                &qp->raw_packet_qp.rq.base :
2167                &qp->trans_qp.base;
2168
2169         qp->has_rq = qp_has_rq(init_attr);
2170         err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
2171                           qp, udata ? &ucmd : NULL);
2172         if (err) {
2173                 mlx5_ib_dbg(dev, "err %d\n", err);
2174                 return err;
2175         }
2176
2177         if (pd) {
2178                 if (udata) {
2179                         __u32 max_wqes =
2180                                 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
2181                         mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
2182                         if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
2183                             ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
2184                                 mlx5_ib_dbg(dev, "invalid rq params\n");
2185                                 return -EINVAL;
2186                         }
2187                         if (ucmd.sq_wqe_count > max_wqes) {
2188                                 mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
2189                                             ucmd.sq_wqe_count, max_wqes);
2190                                 return -EINVAL;
2191                         }
2192                         if (init_attr->create_flags &
2193                             MLX5_IB_QP_CREATE_SQPN_QP1) {
2194                                 mlx5_ib_dbg(dev, "user-space is not allowed to create UD QPs spoofing as QP1\n");
2195                                 return -EINVAL;
2196                         }
2197                         err = create_user_qp(dev, pd, qp, udata, init_attr, &in,
2198                                              &resp, &inlen, base);
2199                         if (err)
2200                                 mlx5_ib_dbg(dev, "err %d\n", err);
2201                 } else {
2202                         err = create_kernel_qp(dev, init_attr, qp, &in, &inlen,
2203                                                base);
2204                         if (err)
2205                                 mlx5_ib_dbg(dev, "err %d\n", err);
2206                 }
2207
2208                 if (err)
2209                         return err;
2210         } else {
2211                 in = kvzalloc(inlen, GFP_KERNEL);
2212                 if (!in)
2213                         return -ENOMEM;
2214
2215                 qp->create_type = MLX5_QP_EMPTY;
2216         }
2217
2218         if (is_sqp(init_attr->qp_type))
2219                 qp->port = init_attr->port_num;
2220
2221         qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
2222
2223         MLX5_SET(qpc, qpc, st, mlx5_st);
2224         MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
2225
2226         if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
2227                 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
2228         else
2229                 MLX5_SET(qpc, qpc, latency_sensitive, 1);
2230
2231
2232         if (qp->wq_sig)
2233                 MLX5_SET(qpc, qpc, wq_signature, 1);
2234
2235         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
2236                 MLX5_SET(qpc, qpc, block_lb_mc, 1);
2237
2238         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
2239                 MLX5_SET(qpc, qpc, cd_master, 1);
2240         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
2241                 MLX5_SET(qpc, qpc, cd_slave_send, 1);
2242         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
2243                 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
2244         if (qp->flags & MLX5_IB_QP_PACKET_BASED_CREDIT)
2245                 MLX5_SET(qpc, qpc, req_e2e_credit_mode, 1);
2246         if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
2247                 configure_responder_scat_cqe(init_attr, qpc);
2248                 configure_requester_scat_cqe(dev, init_attr,
2249                                              udata ? &ucmd : NULL,
2250                                              qpc);
2251         }
2252
2253         if (qp->rq.wqe_cnt) {
2254                 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
2255                 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
2256         }
2257
2258         MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
2259
2260         if (qp->sq.wqe_cnt) {
2261                 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
2262         } else {
2263                 MLX5_SET(qpc, qpc, no_sq, 1);
2264                 if (init_attr->srq &&
2265                     init_attr->srq->srq_type == IB_SRQT_TM)
2266                         MLX5_SET(qpc, qpc, offload_type,
2267                                  MLX5_QPC_OFFLOAD_TYPE_RNDV);
2268         }
2269
2270         /* Set default resources */
2271         switch (init_attr->qp_type) {
2272         case IB_QPT_XRC_TGT:
2273                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
2274                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
2275                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
2276                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(init_attr->xrcd)->xrcdn);
2277                 break;
2278         case IB_QPT_XRC_INI:
2279                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
2280                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
2281                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
2282                 break;
2283         default:
2284                 if (init_attr->srq) {
2285                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x0)->xrcdn);
2286                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
2287                 } else {
2288                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
2289                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
2290                 }
2291         }
2292
2293         if (init_attr->send_cq)
2294                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
2295
2296         if (init_attr->recv_cq)
2297                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
2298
2299         MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
2300
2301         /* 0xffffff means we ask to work with cqe version 0 */
2302         if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
2303                 MLX5_SET(qpc, qpc, user_index, uidx);
2304
2305         /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
2306         if (init_attr->qp_type == IB_QPT_UD &&
2307             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)) {
2308                 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
2309                 qp->flags |= MLX5_IB_QP_LSO;
2310         }
2311
2312         if (init_attr->create_flags & IB_QP_CREATE_PCI_WRITE_END_PADDING) {
2313                 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
2314                         mlx5_ib_dbg(dev, "scatter end padding is not supported\n");
2315                         err = -EOPNOTSUPP;
2316                         goto err;
2317                 } else if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
2318                         MLX5_SET(qpc, qpc, end_padding_mode,
2319                                  MLX5_WQ_END_PAD_MODE_ALIGN);
2320                 } else {
2321                         qp->flags |= MLX5_IB_QP_PCI_WRITE_END_PADDING;
2322                 }
2323         }
2324
2325         if (inlen < 0) {
2326                 err = -EINVAL;
2327                 goto err;
2328         }
2329
2330         if (init_attr->qp_type == IB_QPT_RAW_PACKET ||
2331             qp->flags & MLX5_IB_QP_UNDERLAY) {
2332                 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
2333                 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
2334                 err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata,
2335                                            &resp);
2336         } else {
2337                 err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen);
2338         }
2339
2340         if (err) {
2341                 mlx5_ib_dbg(dev, "create qp failed\n");
2342                 goto err_create;
2343         }
2344
2345         kvfree(in);
2346
2347         base->container_mibqp = qp;
2348         base->mqp.event = mlx5_ib_qp_event;
2349
2350         get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
2351                 &send_cq, &recv_cq);
2352         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2353         mlx5_ib_lock_cqs(send_cq, recv_cq);
2354         /* Maintain device to QPs access, needed for further handling via reset
2355          * flow
2356          */
2357         list_add_tail(&qp->qps_list, &dev->qp_list);
2358         /* Maintain CQ to QPs access, needed for further handling via reset flow
2359          */
2360         if (send_cq)
2361                 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
2362         if (recv_cq)
2363                 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
2364         mlx5_ib_unlock_cqs(send_cq, recv_cq);
2365         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2366
2367         return 0;
2368
2369 err_create:
2370         if (qp->create_type == MLX5_QP_USER)
2371                 destroy_qp_user(dev, pd, qp, base, udata);
2372         else if (qp->create_type == MLX5_QP_KERNEL)
2373                 destroy_qp_kernel(dev, qp);
2374
2375 err:
2376         kvfree(in);
2377         return err;
2378 }
2379
2380 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2381         __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
2382 {
2383         if (send_cq) {
2384                 if (recv_cq) {
2385                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
2386                                 spin_lock(&send_cq->lock);
2387                                 spin_lock_nested(&recv_cq->lock,
2388                                                  SINGLE_DEPTH_NESTING);
2389                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2390                                 spin_lock(&send_cq->lock);
2391                                 __acquire(&recv_cq->lock);
2392                         } else {
2393                                 spin_lock(&recv_cq->lock);
2394                                 spin_lock_nested(&send_cq->lock,
2395                                                  SINGLE_DEPTH_NESTING);
2396                         }
2397                 } else {
2398                         spin_lock(&send_cq->lock);
2399                         __acquire(&recv_cq->lock);
2400                 }
2401         } else if (recv_cq) {
2402                 spin_lock(&recv_cq->lock);
2403                 __acquire(&send_cq->lock);
2404         } else {
2405                 __acquire(&send_cq->lock);
2406                 __acquire(&recv_cq->lock);
2407         }
2408 }
2409
2410 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
2411         __releases(&send_cq->lock) __releases(&recv_cq->lock)
2412 {
2413         if (send_cq) {
2414                 if (recv_cq) {
2415                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
2416                                 spin_unlock(&recv_cq->lock);
2417                                 spin_unlock(&send_cq->lock);
2418                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
2419                                 __release(&recv_cq->lock);
2420                                 spin_unlock(&send_cq->lock);
2421                         } else {
2422                                 spin_unlock(&send_cq->lock);
2423                                 spin_unlock(&recv_cq->lock);
2424                         }
2425                 } else {
2426                         __release(&recv_cq->lock);
2427                         spin_unlock(&send_cq->lock);
2428                 }
2429         } else if (recv_cq) {
2430                 __release(&send_cq->lock);
2431                 spin_unlock(&recv_cq->lock);
2432         } else {
2433                 __release(&recv_cq->lock);
2434                 __release(&send_cq->lock);
2435         }
2436 }
2437
2438 static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
2439 {
2440         return to_mpd(qp->ibqp.pd);
2441 }
2442
2443 static void get_cqs(enum ib_qp_type qp_type,
2444                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
2445                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
2446 {
2447         switch (qp_type) {
2448         case IB_QPT_XRC_TGT:
2449                 *send_cq = NULL;
2450                 *recv_cq = NULL;
2451                 break;
2452         case MLX5_IB_QPT_REG_UMR:
2453         case IB_QPT_XRC_INI:
2454                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2455                 *recv_cq = NULL;
2456                 break;
2457
2458         case IB_QPT_SMI:
2459         case MLX5_IB_QPT_HW_GSI:
2460         case IB_QPT_RC:
2461         case IB_QPT_UC:
2462         case IB_QPT_UD:
2463         case IB_QPT_RAW_IPV6:
2464         case IB_QPT_RAW_ETHERTYPE:
2465         case IB_QPT_RAW_PACKET:
2466                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
2467                 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
2468                 break;
2469
2470         case IB_QPT_MAX:
2471         default:
2472                 *send_cq = NULL;
2473                 *recv_cq = NULL;
2474                 break;
2475         }
2476 }
2477
2478 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2479                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2480                                 u8 lag_tx_affinity);
2481
2482 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2483                               struct ib_udata *udata)
2484 {
2485         struct mlx5_ib_cq *send_cq, *recv_cq;
2486         struct mlx5_ib_qp_base *base;
2487         unsigned long flags;
2488         int err;
2489
2490         if (qp->ibqp.rwq_ind_tbl) {
2491                 destroy_rss_raw_qp_tir(dev, qp);
2492                 return;
2493         }
2494
2495         base = (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
2496                 qp->flags & MLX5_IB_QP_UNDERLAY) ?
2497                &qp->raw_packet_qp.rq.base :
2498                &qp->trans_qp.base;
2499
2500         if (qp->state != IB_QPS_RESET) {
2501                 if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET &&
2502                     !(qp->flags & MLX5_IB_QP_UNDERLAY)) {
2503                         err = mlx5_core_qp_modify(dev->mdev,
2504                                                   MLX5_CMD_OP_2RST_QP, 0,
2505                                                   NULL, &base->mqp);
2506                 } else {
2507                         struct mlx5_modify_raw_qp_param raw_qp_param = {
2508                                 .operation = MLX5_CMD_OP_2RST_QP
2509                         };
2510
2511                         err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
2512                 }
2513                 if (err)
2514                         mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
2515                                      base->mqp.qpn);
2516         }
2517
2518         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
2519                 &send_cq, &recv_cq);
2520
2521         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
2522         mlx5_ib_lock_cqs(send_cq, recv_cq);
2523         /* del from lists under both locks above to protect reset flow paths */
2524         list_del(&qp->qps_list);
2525         if (send_cq)
2526                 list_del(&qp->cq_send_list);
2527
2528         if (recv_cq)
2529                 list_del(&qp->cq_recv_list);
2530
2531         if (qp->create_type == MLX5_QP_KERNEL) {
2532                 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2533                                    qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
2534                 if (send_cq != recv_cq)
2535                         __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
2536                                            NULL);
2537         }
2538         mlx5_ib_unlock_cqs(send_cq, recv_cq);
2539         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
2540
2541         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
2542             qp->flags & MLX5_IB_QP_UNDERLAY) {
2543                 destroy_raw_packet_qp(dev, qp);
2544         } else {
2545                 err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
2546                 if (err)
2547                         mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
2548                                      base->mqp.qpn);
2549         }
2550
2551         if (qp->create_type == MLX5_QP_KERNEL)
2552                 destroy_qp_kernel(dev, qp);
2553         else if (qp->create_type == MLX5_QP_USER)
2554                 destroy_qp_user(dev, &get_pd(qp)->ibpd, qp, base, udata);
2555 }
2556
2557 static const char *ib_qp_type_str(enum ib_qp_type type)
2558 {
2559         switch (type) {
2560         case IB_QPT_SMI:
2561                 return "IB_QPT_SMI";
2562         case IB_QPT_GSI:
2563                 return "IB_QPT_GSI";
2564         case IB_QPT_RC:
2565                 return "IB_QPT_RC";
2566         case IB_QPT_UC:
2567                 return "IB_QPT_UC";
2568         case IB_QPT_UD:
2569                 return "IB_QPT_UD";
2570         case IB_QPT_RAW_IPV6:
2571                 return "IB_QPT_RAW_IPV6";
2572         case IB_QPT_RAW_ETHERTYPE:
2573                 return "IB_QPT_RAW_ETHERTYPE";
2574         case IB_QPT_XRC_INI:
2575                 return "IB_QPT_XRC_INI";
2576         case IB_QPT_XRC_TGT:
2577                 return "IB_QPT_XRC_TGT";
2578         case IB_QPT_RAW_PACKET:
2579                 return "IB_QPT_RAW_PACKET";
2580         case MLX5_IB_QPT_REG_UMR:
2581                 return "MLX5_IB_QPT_REG_UMR";
2582         case IB_QPT_DRIVER:
2583                 return "IB_QPT_DRIVER";
2584         case IB_QPT_MAX:
2585         default:
2586                 return "Invalid QP type";
2587         }
2588 }
2589
2590 static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd,
2591                                         struct ib_qp_init_attr *attr,
2592                                         struct mlx5_ib_create_qp *ucmd,
2593                                         struct ib_udata *udata)
2594 {
2595         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2596                 udata, struct mlx5_ib_ucontext, ibucontext);
2597         struct mlx5_ib_qp *qp;
2598         int err = 0;
2599         u32 uidx = MLX5_IB_DEFAULT_UIDX;
2600         void *dctc;
2601
2602         if (!attr->srq || !attr->recv_cq)
2603                 return ERR_PTR(-EINVAL);
2604
2605         err = get_qp_user_index(ucontext, ucmd, sizeof(*ucmd), &uidx);
2606         if (err)
2607                 return ERR_PTR(err);
2608
2609         qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2610         if (!qp)
2611                 return ERR_PTR(-ENOMEM);
2612
2613         qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
2614         if (!qp->dct.in) {
2615                 err = -ENOMEM;
2616                 goto err_free;
2617         }
2618
2619         MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid);
2620         dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
2621         qp->qp_sub_type = MLX5_IB_QPT_DCT;
2622         MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn);
2623         MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn);
2624         MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn);
2625         MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key);
2626         MLX5_SET(dctc, dctc, user_index, uidx);
2627
2628         if (ucmd->flags & MLX5_QP_FLAG_SCATTER_CQE)
2629                 configure_responder_scat_cqe(attr, dctc);
2630
2631         qp->state = IB_QPS_RESET;
2632
2633         return &qp->ibqp;
2634 err_free:
2635         kfree(qp);
2636         return ERR_PTR(err);
2637 }
2638
2639 static int set_mlx_qp_type(struct mlx5_ib_dev *dev,
2640                            struct ib_qp_init_attr *init_attr,
2641                            struct mlx5_ib_create_qp *ucmd,
2642                            struct ib_udata *udata)
2643 {
2644         enum { MLX_QP_FLAGS = MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI };
2645         int err;
2646
2647         if (!udata)
2648                 return -EINVAL;
2649
2650         if (udata->inlen < sizeof(*ucmd)) {
2651                 mlx5_ib_dbg(dev, "create_qp user command is smaller than expected\n");
2652                 return -EINVAL;
2653         }
2654         err = ib_copy_from_udata(ucmd, udata, sizeof(*ucmd));
2655         if (err)
2656                 return err;
2657
2658         if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCI) {
2659                 init_attr->qp_type = MLX5_IB_QPT_DCI;
2660         } else {
2661                 if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCT) {
2662                         init_attr->qp_type = MLX5_IB_QPT_DCT;
2663                 } else {
2664                         mlx5_ib_dbg(dev, "Invalid QP flags\n");
2665                         return -EINVAL;
2666                 }
2667         }
2668
2669         if (!MLX5_CAP_GEN(dev->mdev, dct)) {
2670                 mlx5_ib_dbg(dev, "DC transport is not supported\n");
2671                 return -EOPNOTSUPP;
2672         }
2673
2674         return 0;
2675 }
2676
2677 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
2678                                 struct ib_qp_init_attr *verbs_init_attr,
2679                                 struct ib_udata *udata)
2680 {
2681         struct mlx5_ib_dev *dev;
2682         struct mlx5_ib_qp *qp;
2683         u16 xrcdn = 0;
2684         int err;
2685         struct ib_qp_init_attr mlx_init_attr;
2686         struct ib_qp_init_attr *init_attr = verbs_init_attr;
2687         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
2688                 udata, struct mlx5_ib_ucontext, ibucontext);
2689
2690         if (pd) {
2691                 dev = to_mdev(pd->device);
2692
2693                 if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
2694                         if (!ucontext) {
2695                                 mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
2696                                 return ERR_PTR(-EINVAL);
2697                         } else if (!ucontext->cqe_version) {
2698                                 mlx5_ib_dbg(dev, "Raw Packet QP is only supported for CQE version > 0\n");
2699                                 return ERR_PTR(-EINVAL);
2700                         }
2701                 }
2702         } else {
2703                 /* being cautious here */
2704                 if (init_attr->qp_type != IB_QPT_XRC_TGT &&
2705                     init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
2706                         pr_warn("%s: no PD for transport %s\n", __func__,
2707                                 ib_qp_type_str(init_attr->qp_type));
2708                         return ERR_PTR(-EINVAL);
2709                 }
2710                 dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
2711         }
2712
2713         if (init_attr->qp_type == IB_QPT_DRIVER) {
2714                 struct mlx5_ib_create_qp ucmd;
2715
2716                 init_attr = &mlx_init_attr;
2717                 memcpy(init_attr, verbs_init_attr, sizeof(*verbs_init_attr));
2718                 err = set_mlx_qp_type(dev, init_attr, &ucmd, udata);
2719                 if (err)
2720                         return ERR_PTR(err);
2721
2722                 if (init_attr->qp_type == MLX5_IB_QPT_DCI) {
2723                         if (init_attr->cap.max_recv_wr ||
2724                             init_attr->cap.max_recv_sge) {
2725                                 mlx5_ib_dbg(dev, "DCI QP requires zero size receive queue\n");
2726                                 return ERR_PTR(-EINVAL);
2727                         }
2728                 } else {
2729                         return mlx5_ib_create_dct(pd, init_attr, &ucmd, udata);
2730                 }
2731         }
2732
2733         switch (init_attr->qp_type) {
2734         case IB_QPT_XRC_TGT:
2735         case IB_QPT_XRC_INI:
2736                 if (!MLX5_CAP_GEN(dev->mdev, xrc)) {
2737                         mlx5_ib_dbg(dev, "XRC not supported\n");
2738                         return ERR_PTR(-ENOSYS);
2739                 }
2740                 init_attr->recv_cq = NULL;
2741                 if (init_attr->qp_type == IB_QPT_XRC_TGT) {
2742                         xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
2743                         init_attr->send_cq = NULL;
2744                 }
2745
2746                 /* fall through */
2747         case IB_QPT_RAW_PACKET:
2748         case IB_QPT_RC:
2749         case IB_QPT_UC:
2750         case IB_QPT_UD:
2751         case IB_QPT_SMI:
2752         case MLX5_IB_QPT_HW_GSI:
2753         case MLX5_IB_QPT_REG_UMR:
2754         case MLX5_IB_QPT_DCI:
2755                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2756                 if (!qp)
2757                         return ERR_PTR(-ENOMEM);
2758
2759                 err = create_qp_common(dev, pd, init_attr, udata, qp);
2760                 if (err) {
2761                         mlx5_ib_dbg(dev, "create_qp_common failed\n");
2762                         kfree(qp);
2763                         return ERR_PTR(err);
2764                 }
2765
2766                 if (is_qp0(init_attr->qp_type))
2767                         qp->ibqp.qp_num = 0;
2768                 else if (is_qp1(init_attr->qp_type))
2769                         qp->ibqp.qp_num = 1;
2770                 else
2771                         qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2772
2773                 mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
2774                             qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2775                             init_attr->recv_cq ? to_mcq(init_attr->recv_cq)->mcq.cqn : -1,
2776                             init_attr->send_cq ? to_mcq(init_attr->send_cq)->mcq.cqn : -1);
2777
2778                 qp->trans_qp.xrcdn = xrcdn;
2779
2780                 break;
2781
2782         case IB_QPT_GSI:
2783                 return mlx5_ib_gsi_create_qp(pd, init_attr);
2784
2785         case IB_QPT_RAW_IPV6:
2786         case IB_QPT_RAW_ETHERTYPE:
2787         case IB_QPT_MAX:
2788         default:
2789                 mlx5_ib_dbg(dev, "unsupported qp type %d\n",
2790                             init_attr->qp_type);
2791                 /* Don't support raw QPs */
2792                 return ERR_PTR(-EINVAL);
2793         }
2794
2795         if (verbs_init_attr->qp_type == IB_QPT_DRIVER)
2796                 qp->qp_sub_type = init_attr->qp_type;
2797
2798         return &qp->ibqp;
2799 }
2800
2801 static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)
2802 {
2803         struct mlx5_ib_dev *dev = to_mdev(mqp->ibqp.device);
2804
2805         if (mqp->state == IB_QPS_RTR) {
2806                 int err;
2807
2808                 err = mlx5_core_destroy_dct(dev->mdev, &mqp->dct.mdct);
2809                 if (err) {
2810                         mlx5_ib_warn(dev, "failed to destroy DCT %d\n", err);
2811                         return err;
2812                 }
2813         }
2814
2815         kfree(mqp->dct.in);
2816         kfree(mqp);
2817         return 0;
2818 }
2819
2820 int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata)
2821 {
2822         struct mlx5_ib_dev *dev = to_mdev(qp->device);
2823         struct mlx5_ib_qp *mqp = to_mqp(qp);
2824
2825         if (unlikely(qp->qp_type == IB_QPT_GSI))
2826                 return mlx5_ib_gsi_destroy_qp(qp);
2827
2828         if (mqp->qp_sub_type == MLX5_IB_QPT_DCT)
2829                 return mlx5_ib_destroy_dct(mqp);
2830
2831         destroy_qp_common(dev, mqp, udata);
2832
2833         kfree(mqp);
2834
2835         return 0;
2836 }
2837
2838 static int to_mlx5_access_flags(struct mlx5_ib_qp *qp,
2839                                 const struct ib_qp_attr *attr,
2840                                 int attr_mask, __be32 *hw_access_flags_be)
2841 {
2842         u8 dest_rd_atomic;
2843         u32 access_flags, hw_access_flags = 0;
2844
2845         struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
2846
2847         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2848                 dest_rd_atomic = attr->max_dest_rd_atomic;
2849         else
2850                 dest_rd_atomic = qp->trans_qp.resp_depth;
2851
2852         if (attr_mask & IB_QP_ACCESS_FLAGS)
2853                 access_flags = attr->qp_access_flags;
2854         else
2855                 access_flags = qp->trans_qp.atomic_rd_en;
2856
2857         if (!dest_rd_atomic)
2858                 access_flags &= IB_ACCESS_REMOTE_WRITE;
2859
2860         if (access_flags & IB_ACCESS_REMOTE_READ)
2861                 hw_access_flags |= MLX5_QP_BIT_RRE;
2862         if (access_flags & IB_ACCESS_REMOTE_ATOMIC) {
2863                 int atomic_mode;
2864
2865                 atomic_mode = get_atomic_mode(dev, qp->ibqp.qp_type);
2866                 if (atomic_mode < 0)
2867                         return -EOPNOTSUPP;
2868
2869                 hw_access_flags |= MLX5_QP_BIT_RAE;
2870                 hw_access_flags |= atomic_mode << MLX5_ATOMIC_MODE_OFFSET;
2871         }
2872
2873         if (access_flags & IB_ACCESS_REMOTE_WRITE)
2874                 hw_access_flags |= MLX5_QP_BIT_RWE;
2875
2876         *hw_access_flags_be = cpu_to_be32(hw_access_flags);
2877
2878         return 0;
2879 }
2880
2881 enum {
2882         MLX5_PATH_FLAG_FL       = 1 << 0,
2883         MLX5_PATH_FLAG_FREE_AR  = 1 << 1,
2884         MLX5_PATH_FLAG_COUNTER  = 1 << 2,
2885 };
2886
2887 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
2888 {
2889         if (rate == IB_RATE_PORT_CURRENT)
2890                 return 0;
2891
2892         if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS)
2893                 return -EINVAL;
2894
2895         while (rate != IB_RATE_PORT_CURRENT &&
2896                !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
2897                  MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
2898                 --rate;
2899
2900         return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;
2901 }
2902
2903 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
2904                                       struct mlx5_ib_sq *sq, u8 sl,
2905                                       struct ib_pd *pd)
2906 {
2907         void *in;
2908         void *tisc;
2909         int inlen;
2910         int err;
2911
2912         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2913         in = kvzalloc(inlen, GFP_KERNEL);
2914         if (!in)
2915                 return -ENOMEM;
2916
2917         MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
2918         MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
2919
2920         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2921         MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
2922
2923         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2924
2925         kvfree(in);
2926
2927         return err;
2928 }
2929
2930 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
2931                                          struct mlx5_ib_sq *sq, u8 tx_affinity,
2932                                          struct ib_pd *pd)
2933 {
2934         void *in;
2935         void *tisc;
2936         int inlen;
2937         int err;
2938
2939         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2940         in = kvzalloc(inlen, GFP_KERNEL);
2941         if (!in)
2942                 return -ENOMEM;
2943
2944         MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
2945         MLX5_SET(modify_tis_in, in, uid, to_mpd(pd)->uid);
2946
2947         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2948         MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
2949
2950         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2951
2952         kvfree(in);
2953
2954         return err;
2955 }
2956
2957 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2958                          const struct rdma_ah_attr *ah,
2959                          struct mlx5_qp_path *path, u8 port, int attr_mask,
2960                          u32 path_flags, const struct ib_qp_attr *attr,
2961                          bool alt)
2962 {
2963         const struct ib_global_route *grh = rdma_ah_read_grh(ah);
2964         int err;
2965         enum ib_gid_type gid_type;
2966         u8 ah_flags = rdma_ah_get_ah_flags(ah);
2967         u8 sl = rdma_ah_get_sl(ah);
2968
2969         if (attr_mask & IB_QP_PKEY_INDEX)
2970                 path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
2971                                                      attr->pkey_index);
2972
2973         if (ah_flags & IB_AH_GRH) {
2974                 if (grh->sgid_index >=
2975                     dev->mdev->port_caps[port - 1].gid_table_len) {
2976                         pr_err("sgid_index (%u) too large. max is %d\n",
2977                                grh->sgid_index,
2978                                dev->mdev->port_caps[port - 1].gid_table_len);
2979                         return -EINVAL;
2980                 }
2981         }
2982
2983         if (ah->type == RDMA_AH_ATTR_TYPE_ROCE) {
2984                 if (!(ah_flags & IB_AH_GRH))
2985                         return -EINVAL;
2986
2987                 memcpy(path->rmac, ah->roce.dmac, sizeof(ah->roce.dmac));
2988                 if (qp->ibqp.qp_type == IB_QPT_RC ||
2989                     qp->ibqp.qp_type == IB_QPT_UC ||
2990                     qp->ibqp.qp_type == IB_QPT_XRC_INI ||
2991                     qp->ibqp.qp_type == IB_QPT_XRC_TGT)
2992                         path->udp_sport =
2993                                 mlx5_get_roce_udp_sport(dev, ah->grh.sgid_attr);
2994                 path->dci_cfi_prio_sl = (sl & 0x7) << 4;
2995                 gid_type = ah->grh.sgid_attr->gid_type;
2996                 if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
2997                         path->ecn_dscp = (grh->traffic_class >> 2) & 0x3f;
2998         } else {
2999                 path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
3000                 path->fl_free_ar |=
3001                         (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x40 : 0;
3002                 path->rlid = cpu_to_be16(rdma_ah_get_dlid(ah));
3003                 path->grh_mlid = rdma_ah_get_path_bits(ah) & 0x7f;
3004                 if (ah_flags & IB_AH_GRH)
3005                         path->grh_mlid  |= 1 << 7;
3006                 path->dci_cfi_prio_sl = sl & 0xf;
3007         }
3008
3009         if (ah_flags & IB_AH_GRH) {
3010                 path->mgid_index = grh->sgid_index;
3011                 path->hop_limit  = grh->hop_limit;
3012                 path->tclass_flowlabel =
3013                         cpu_to_be32((grh->traffic_class << 20) |
3014                                     (grh->flow_label));
3015                 memcpy(path->rgid, grh->dgid.raw, 16);
3016         }
3017
3018         err = ib_rate_to_mlx5(dev, rdma_ah_get_static_rate(ah));
3019         if (err < 0)
3020                 return err;
3021         path->static_rate = err;
3022         path->port = port;
3023
3024         if (attr_mask & IB_QP_TIMEOUT)
3025                 path->ackto_lt = (alt ? attr->alt_timeout : attr->timeout) << 3;
3026
3027         if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
3028                 return modify_raw_packet_eth_prio(dev->mdev,
3029                                                   &qp->raw_packet_qp.sq,
3030                                                   sl & 0xf, qp->ibqp.pd);
3031
3032         return 0;
3033 }
3034
3035 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
3036         [MLX5_QP_STATE_INIT] = {
3037                 [MLX5_QP_STATE_INIT] = {
3038                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
3039                                           MLX5_QP_OPTPAR_RAE            |
3040                                           MLX5_QP_OPTPAR_RWE            |
3041                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
3042                                           MLX5_QP_OPTPAR_PRI_PORT,
3043                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
3044                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
3045                                           MLX5_QP_OPTPAR_PRI_PORT,
3046                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
3047                                           MLX5_QP_OPTPAR_Q_KEY          |
3048                                           MLX5_QP_OPTPAR_PRI_PORT,
3049                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE           |
3050                                           MLX5_QP_OPTPAR_RAE            |
3051                                           MLX5_QP_OPTPAR_RWE            |
3052                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
3053                                           MLX5_QP_OPTPAR_PRI_PORT,
3054                 },
3055                 [MLX5_QP_STATE_RTR] = {
3056                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3057                                           MLX5_QP_OPTPAR_RRE            |
3058                                           MLX5_QP_OPTPAR_RAE            |
3059                                           MLX5_QP_OPTPAR_RWE            |
3060                                           MLX5_QP_OPTPAR_PKEY_INDEX,
3061                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3062                                           MLX5_QP_OPTPAR_RWE            |
3063                                           MLX5_QP_OPTPAR_PKEY_INDEX,
3064                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
3065                                           MLX5_QP_OPTPAR_Q_KEY,
3066                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX    |
3067                                            MLX5_QP_OPTPAR_Q_KEY,
3068                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3069                                           MLX5_QP_OPTPAR_RRE            |
3070                                           MLX5_QP_OPTPAR_RAE            |
3071                                           MLX5_QP_OPTPAR_RWE            |
3072                                           MLX5_QP_OPTPAR_PKEY_INDEX,
3073                 },
3074         },
3075         [MLX5_QP_STATE_RTR] = {
3076                 [MLX5_QP_STATE_RTS] = {
3077                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3078                                           MLX5_QP_OPTPAR_RRE            |
3079                                           MLX5_QP_OPTPAR_RAE            |
3080                                           MLX5_QP_OPTPAR_RWE            |
3081                                           MLX5_QP_OPTPAR_PM_STATE       |
3082                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
3083                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
3084                                           MLX5_QP_OPTPAR_RWE            |
3085                                           MLX5_QP_OPTPAR_PM_STATE,
3086                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
3087                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
3088                                           MLX5_QP_OPTPAR_RRE            |
3089                                           MLX5_QP_OPTPAR_RAE            |
3090                                           MLX5_QP_OPTPAR_RWE            |
3091                                           MLX5_QP_OPTPAR_PM_STATE       |
3092                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
3093                 },
3094         },
3095         [MLX5_QP_STATE_RTS] = {
3096                 [MLX5_QP_STATE_RTS] = {
3097                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
3098                                           MLX5_QP_OPTPAR_RAE            |
3099                                           MLX5_QP_OPTPAR_RWE            |
3100                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
3101                                           MLX5_QP_OPTPAR_PM_STATE       |
3102                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3103                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
3104                                           MLX5_QP_OPTPAR_PM_STATE       |
3105                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3106                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY          |
3107                                           MLX5_QP_OPTPAR_SRQN           |
3108                                           MLX5_QP_OPTPAR_CQN_RCV,
3109                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_RRE           |
3110                                           MLX5_QP_OPTPAR_RAE            |
3111                                           MLX5_QP_OPTPAR_RWE            |
3112                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
3113                                           MLX5_QP_OPTPAR_PM_STATE       |
3114                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
3115                 },
3116         },
3117         [MLX5_QP_STATE_SQER] = {
3118                 [MLX5_QP_STATE_RTS] = {
3119                         [MLX5_QP_ST_UD]  = MLX5_QP_OPTPAR_Q_KEY,
3120                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
3121                         [MLX5_QP_ST_UC]  = MLX5_QP_OPTPAR_RWE,
3122                         [MLX5_QP_ST_RC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT   |
3123                                            MLX5_QP_OPTPAR_RWE           |
3124                                            MLX5_QP_OPTPAR_RAE           |
3125                                            MLX5_QP_OPTPAR_RRE,
3126                         [MLX5_QP_ST_XRC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT  |
3127                                            MLX5_QP_OPTPAR_RWE           |
3128                                            MLX5_QP_OPTPAR_RAE           |
3129                                            MLX5_QP_OPTPAR_RRE,
3130                 },
3131         },
3132 };
3133
3134 static int ib_nr_to_mlx5_nr(int ib_mask)
3135 {
3136         switch (ib_mask) {
3137         case IB_QP_STATE:
3138                 return 0;
3139         case IB_QP_CUR_STATE:
3140                 return 0;
3141         case IB_QP_EN_SQD_ASYNC_NOTIFY:
3142                 return 0;
3143         case IB_QP_ACCESS_FLAGS:
3144                 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
3145                         MLX5_QP_OPTPAR_RAE;
3146         case IB_QP_PKEY_INDEX:
3147                 return MLX5_QP_OPTPAR_PKEY_INDEX;
3148         case IB_QP_PORT:
3149                 return MLX5_QP_OPTPAR_PRI_PORT;
3150         case IB_QP_QKEY:
3151                 return MLX5_QP_OPTPAR_Q_KEY;
3152         case IB_QP_AV:
3153                 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
3154                         MLX5_QP_OPTPAR_PRI_PORT;
3155         case IB_QP_PATH_MTU:
3156                 return 0;
3157         case IB_QP_TIMEOUT:
3158                 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
3159         case IB_QP_RETRY_CNT:
3160                 return MLX5_QP_OPTPAR_RETRY_COUNT;
3161         case IB_QP_RNR_RETRY:
3162                 return MLX5_QP_OPTPAR_RNR_RETRY;
3163         case IB_QP_RQ_PSN:
3164                 return 0;
3165         case IB_QP_MAX_QP_RD_ATOMIC:
3166                 return MLX5_QP_OPTPAR_SRA_MAX;
3167         case IB_QP_ALT_PATH:
3168                 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
3169         case IB_QP_MIN_RNR_TIMER:
3170                 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
3171         case IB_QP_SQ_PSN:
3172                 return 0;
3173         case IB_QP_MAX_DEST_RD_ATOMIC:
3174                 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
3175                         MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
3176         case IB_QP_PATH_MIG_STATE:
3177                 return MLX5_QP_OPTPAR_PM_STATE;
3178         case IB_QP_CAP:
3179                 return 0;
3180         case IB_QP_DEST_QPN:
3181                 return 0;
3182         }
3183         return 0;
3184 }
3185
3186 static int ib_mask_to_mlx5_opt(int ib_mask)
3187 {
3188         int result = 0;
3189         int i;
3190
3191         for (i = 0; i < 8 * sizeof(int); i++) {
3192                 if ((1 << i) & ib_mask)
3193                         result |= ib_nr_to_mlx5_nr(1 << i);
3194         }
3195
3196         return result;
3197 }
3198
3199 static int modify_raw_packet_qp_rq(
3200         struct mlx5_ib_dev *dev, struct mlx5_ib_rq *rq, int new_state,
3201         const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3202 {
3203         void *in;
3204         void *rqc;
3205         int inlen;
3206         int err;
3207
3208         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
3209         in = kvzalloc(inlen, GFP_KERNEL);
3210         if (!in)
3211                 return -ENOMEM;
3212
3213         MLX5_SET(modify_rq_in, in, rq_state, rq->state);
3214         MLX5_SET(modify_rq_in, in, uid, to_mpd(pd)->uid);
3215
3216         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
3217         MLX5_SET(rqc, rqc, state, new_state);
3218
3219         if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
3220                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
3221                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
3222                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
3223                         MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
3224                 } else
3225                         dev_info_once(
3226                                 &dev->ib_dev.dev,
3227                                 "RAW PACKET QP counters are not supported on current FW\n");
3228         }
3229
3230         err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in, inlen);
3231         if (err)
3232                 goto out;
3233
3234         rq->state = new_state;
3235
3236 out:
3237         kvfree(in);
3238         return err;
3239 }
3240
3241 static int modify_raw_packet_qp_sq(
3242         struct mlx5_core_dev *dev, struct mlx5_ib_sq *sq, int new_state,
3243         const struct mlx5_modify_raw_qp_param *raw_qp_param, struct ib_pd *pd)
3244 {
3245         struct mlx5_ib_qp *ibqp = sq->base.container_mibqp;
3246         struct mlx5_rate_limit old_rl = ibqp->rl;
3247         struct mlx5_rate_limit new_rl = old_rl;
3248         bool new_rate_added = false;
3249         u16 rl_index = 0;
3250         void *in;
3251         void *sqc;
3252         int inlen;
3253         int err;
3254
3255         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
3256         in = kvzalloc(inlen, GFP_KERNEL);
3257         if (!in)
3258                 return -ENOMEM;
3259
3260         MLX5_SET(modify_sq_in, in, uid, to_mpd(pd)->uid);
3261         MLX5_SET(modify_sq_in, in, sq_state, sq->state);
3262
3263         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
3264         MLX5_SET(sqc, sqc, state, new_state);
3265
3266         if (raw_qp_param->set_mask & MLX5_RAW_QP_RATE_LIMIT) {
3267                 if (new_state != MLX5_SQC_STATE_RDY)
3268                         pr_warn("%s: Rate limit can only be changed when SQ is moving to RDY\n",
3269                                 __func__);
3270                 else
3271                         new_rl = raw_qp_param->rl;
3272         }
3273
3274         if (!mlx5_rl_are_equal(&old_rl, &new_rl)) {
3275                 if (new_rl.rate) {
3276                         err = mlx5_rl_add_rate(dev, &rl_index, &new_rl);
3277                         if (err) {
3278                                 pr_err("Failed configuring rate limit(err %d): \
3279                                        rate %u, max_burst_sz %u, typical_pkt_sz %u\n",
3280                                        err, new_rl.rate, new_rl.max_burst_sz,
3281                                        new_rl.typical_pkt_sz);
3282
3283                                 goto out;
3284                         }
3285                         new_rate_added = true;
3286                 }
3287
3288                 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
3289                 /* index 0 means no limit */
3290                 MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, rl_index);
3291         }
3292
3293         err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
3294         if (err) {
3295                 /* Remove new rate from table if failed */
3296                 if (new_rate_added)
3297                         mlx5_rl_remove_rate(dev, &new_rl);
3298                 goto out;
3299         }
3300
3301         /* Only remove the old rate after new rate was set */
3302         if ((old_rl.rate && !mlx5_rl_are_equal(&old_rl, &new_rl)) ||
3303             (new_state != MLX5_SQC_STATE_RDY)) {
3304                 mlx5_rl_remove_rate(dev, &old_rl);
3305                 if (new_state != MLX5_SQC_STATE_RDY)
3306                         memset(&new_rl, 0, sizeof(new_rl));
3307         }
3308
3309         ibqp->rl = new_rl;
3310         sq->state = new_state;
3311
3312 out:
3313         kvfree(in);
3314         return err;
3315 }
3316
3317 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
3318                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
3319                                 u8 tx_affinity)
3320 {
3321         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
3322         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
3323         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
3324         int modify_rq = !!qp->rq.wqe_cnt;
3325         int modify_sq = !!qp->sq.wqe_cnt;
3326         int rq_state;
3327         int sq_state;
3328         int err;
3329
3330         switch (raw_qp_param->operation) {
3331         case MLX5_CMD_OP_RST2INIT_QP:
3332                 rq_state = MLX5_RQC_STATE_RDY;
3333                 sq_state = MLX5_SQC_STATE_RDY;
3334                 break;
3335         case MLX5_CMD_OP_2ERR_QP:
3336                 rq_state = MLX5_RQC_STATE_ERR;
3337                 sq_state = MLX5_SQC_STATE_ERR;
3338                 break;
3339         case MLX5_CMD_OP_2RST_QP:
3340                 rq_state = MLX5_RQC_STATE_RST;
3341                 sq_state = MLX5_SQC_STATE_RST;
3342                 break;
3343         case MLX5_CMD_OP_RTR2RTS_QP:
3344         case MLX5_CMD_OP_RTS2RTS_QP:
3345                 if (raw_qp_param->set_mask ==
3346                     MLX5_RAW_QP_RATE_LIMIT) {
3347                         modify_rq = 0;
3348                         sq_state = sq->state;
3349                 } else {
3350                         return raw_qp_param->set_mask ? -EINVAL : 0;
3351                 }
3352                 break;
3353         case MLX5_CMD_OP_INIT2INIT_QP:
3354         case MLX5_CMD_OP_INIT2RTR_QP:
3355                 if (raw_qp_param->set_mask)
3356                         return -EINVAL;
3357                 else
3358                         return 0;
3359         default:
3360                 WARN_ON(1);
3361                 return -EINVAL;
3362         }
3363
3364         if (modify_rq) {
3365                 err =  modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param,
3366                                                qp->ibqp.pd);
3367                 if (err)
3368                         return err;
3369         }
3370
3371         if (modify_sq) {
3372                 struct mlx5_flow_handle *flow_rule;
3373
3374                 if (tx_affinity) {
3375                         err = modify_raw_packet_tx_affinity(dev->mdev, sq,
3376                                                             tx_affinity,
3377                                                             qp->ibqp.pd);
3378                         if (err)
3379                                 return err;
3380                 }
3381
3382                 flow_rule = create_flow_rule_vport_sq(dev, sq,
3383                                                       raw_qp_param->port);
3384                 if (IS_ERR(flow_rule))
3385                         return PTR_ERR(flow_rule);
3386
3387                 err = modify_raw_packet_qp_sq(dev->mdev, sq, sq_state,
3388                                               raw_qp_param, qp->ibqp.pd);
3389                 if (err) {
3390                         if (flow_rule)
3391                                 mlx5_del_flow_rules(flow_rule);
3392                         return err;
3393                 }
3394
3395                 if (flow_rule) {
3396                         destroy_flow_rule_vport_sq(sq);
3397                         sq->flow_rule = flow_rule;
3398                 }
3399
3400                 return err;
3401         }
3402
3403         return 0;
3404 }
3405
3406 static unsigned int get_tx_affinity(struct mlx5_ib_dev *dev,
3407                                     struct mlx5_ib_pd *pd,
3408                                     struct mlx5_ib_qp_base *qp_base,
3409                                     u8 port_num, struct ib_udata *udata)
3410 {
3411         struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
3412                 udata, struct mlx5_ib_ucontext, ibucontext);
3413         unsigned int tx_port_affinity;
3414
3415         if (ucontext) {
3416                 tx_port_affinity = (unsigned int)atomic_add_return(
3417                                            1, &ucontext->tx_port_affinity) %
3418                                            MLX5_MAX_PORTS +
3419                                    1;
3420                 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x ucontext %p\n",
3421                                 tx_port_affinity, qp_base->mqp.qpn, ucontext);
3422         } else {
3423                 tx_port_affinity =
3424                         (unsigned int)atomic_add_return(
3425                                 1, &dev->port[port_num].roce.tx_port_affinity) %
3426                                 MLX5_MAX_PORTS +
3427                         1;
3428                 mlx5_ib_dbg(dev, "Set tx affinity 0x%x to qpn 0x%x\n",
3429                                 tx_port_affinity, qp_base->mqp.qpn);
3430         }
3431
3432         return tx_port_affinity;
3433 }
3434
3435 static int __mlx5_ib_qp_set_counter(struct ib_qp *qp,
3436                                     struct rdma_counter *counter)
3437 {
3438         struct mlx5_ib_dev *dev = to_mdev(qp->device);
3439         struct mlx5_ib_qp *mqp = to_mqp(qp);
3440         struct mlx5_qp_context context = {};
3441         struct mlx5_ib_qp_base *base;
3442         u32 set_id;
3443
3444         if (!MLX5_CAP_GEN(dev->mdev, rts2rts_qp_counters_set_id))
3445                 return 0;
3446
3447         if (counter)
3448                 set_id = counter->id;
3449         else
3450                 set_id = mlx5_ib_get_counters_id(dev, mqp->port - 1);
3451
3452         base = &mqp->trans_qp.base;
3453         context.qp_counter_set_usr_page &= cpu_to_be32(0xffffff);
3454         context.qp_counter_set_usr_page |= cpu_to_be32(set_id << 24);
3455         return mlx5_core_qp_modify(dev->mdev,
3456                                    MLX5_CMD_OP_RTS2RTS_QP,
3457                                    MLX5_QP_OPTPAR_COUNTER_SET_ID,
3458                                    &context, &base->mqp);
3459 }
3460
3461 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
3462                                const struct ib_qp_attr *attr, int attr_mask,
3463                                enum ib_qp_state cur_state,
3464                                enum ib_qp_state new_state,
3465                                const struct mlx5_ib_modify_qp *ucmd,
3466                                struct ib_udata *udata)
3467 {
3468         static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
3469                 [MLX5_QP_STATE_RST] = {
3470                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3471                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3472                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_RST2INIT_QP,
3473                 },
3474                 [MLX5_QP_STATE_INIT]  = {
3475                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3476                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3477                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_INIT2INIT_QP,
3478                         [MLX5_QP_STATE_RTR]     = MLX5_CMD_OP_INIT2RTR_QP,
3479                 },
3480                 [MLX5_QP_STATE_RTR]   = {
3481                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3482                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3483                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTR2RTS_QP,
3484                 },
3485                 [MLX5_QP_STATE_RTS]   = {
3486                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3487                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3488                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTS2RTS_QP,
3489                 },
3490                 [MLX5_QP_STATE_SQD] = {
3491                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3492                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3493                 },
3494                 [MLX5_QP_STATE_SQER] = {
3495                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3496                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3497                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_SQERR2RTS_QP,
3498                 },
3499                 [MLX5_QP_STATE_ERR] = {
3500                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
3501                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
3502                 }
3503         };
3504
3505         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3506         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3507         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
3508         struct mlx5_ib_cq *send_cq, *recv_cq;
3509         struct mlx5_qp_context *context;
3510         struct mlx5_ib_pd *pd;
3511         enum mlx5_qp_state mlx5_cur, mlx5_new;
3512         enum mlx5_qp_optpar optpar;
3513         u32 set_id = 0;
3514         int mlx5_st;
3515         int err;
3516         u16 op;
3517         u8 tx_affinity = 0;
3518
3519         mlx5_st = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
3520                              qp->qp_sub_type : ibqp->qp_type);
3521         if (mlx5_st < 0)
3522                 return -EINVAL;
3523
3524         context = kzalloc(sizeof(*context), GFP_KERNEL);
3525         if (!context)
3526                 return -ENOMEM;
3527
3528         pd = get_pd(qp);
3529         context->flags = cpu_to_be32(mlx5_st << 16);
3530
3531         if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
3532                 context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
3533         } else {
3534                 switch (attr->path_mig_state) {
3535                 case IB_MIG_MIGRATED:
3536                         context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
3537                         break;
3538                 case IB_MIG_REARM:
3539                         context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
3540                         break;
3541                 case IB_MIG_ARMED:
3542                         context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
3543                         break;
3544                 }
3545         }
3546
3547         if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) {
3548                 if ((ibqp->qp_type == IB_QPT_RC) ||
3549                     (ibqp->qp_type == IB_QPT_UD &&
3550                      !(qp->flags & MLX5_IB_QP_SQPN_QP1)) ||
3551                     (ibqp->qp_type == IB_QPT_UC) ||
3552                     (ibqp->qp_type == IB_QPT_RAW_PACKET) ||
3553                     (ibqp->qp_type == IB_QPT_XRC_INI) ||
3554                     (ibqp->qp_type == IB_QPT_XRC_TGT)) {
3555                         if (dev->lag_active) {
3556                                 u8 p = mlx5_core_native_port_num(dev->mdev) - 1;
3557                                 tx_affinity = get_tx_affinity(dev, pd, base, p,
3558                                                               udata);
3559                                 context->flags |= cpu_to_be32(tx_affinity << 24);
3560                         }
3561                 }
3562         }
3563
3564         if (is_sqp(ibqp->qp_type)) {
3565                 context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
3566         } else if ((ibqp->qp_type == IB_QPT_UD &&
3567                     !(qp->flags & MLX5_IB_QP_UNDERLAY)) ||
3568                    ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
3569                 context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
3570         } else if (attr_mask & IB_QP_PATH_MTU) {
3571                 if (attr->path_mtu < IB_MTU_256 ||
3572                     attr->path_mtu > IB_MTU_4096) {
3573                         mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
3574                         err = -EINVAL;
3575                         goto out;
3576                 }
3577                 context->mtu_msgmax = (attr->path_mtu << 5) |
3578                                       (u8)MLX5_CAP_GEN(dev->mdev, log_max_msg);
3579         }
3580
3581         if (attr_mask & IB_QP_DEST_QPN)
3582                 context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
3583
3584         if (attr_mask & IB_QP_PKEY_INDEX)
3585                 context->pri_path.pkey_index = cpu_to_be16(attr->pkey_index);
3586
3587         /* todo implement counter_index functionality */
3588
3589         if (is_sqp(ibqp->qp_type))
3590                 context->pri_path.port = qp->port;
3591
3592         if (attr_mask & IB_QP_PORT)
3593                 context->pri_path.port = attr->port_num;
3594
3595         if (attr_mask & IB_QP_AV) {
3596                 err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
3597                                     attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
3598                                     attr_mask, 0, attr, false);
3599                 if (err)
3600                         goto out;
3601         }
3602
3603         if (attr_mask & IB_QP_TIMEOUT)
3604                 context->pri_path.ackto_lt |= attr->timeout << 3;
3605
3606         if (attr_mask & IB_QP_ALT_PATH) {
3607                 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
3608                                     &context->alt_path,
3609                                     attr->alt_port_num,
3610                                     attr_mask | IB_QP_PKEY_INDEX | IB_QP_TIMEOUT,
3611                                     0, attr, true);
3612                 if (err)
3613                         goto out;
3614         }
3615
3616         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
3617                 &send_cq, &recv_cq);
3618
3619         context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
3620         context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
3621         context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
3622         context->params1  = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
3623
3624         if (attr_mask & IB_QP_RNR_RETRY)
3625                 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
3626
3627         if (attr_mask & IB_QP_RETRY_CNT)
3628                 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
3629
3630         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
3631                 if (attr->max_rd_atomic)
3632                         context->params1 |=
3633                                 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
3634         }
3635
3636         if (attr_mask & IB_QP_SQ_PSN)
3637                 context->next_send_psn = cpu_to_be32(attr->sq_psn);
3638
3639         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
3640                 if (attr->max_dest_rd_atomic)
3641                         context->params2 |=
3642                                 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
3643         }
3644
3645         if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
3646                 __be32 access_flags;
3647
3648                 err = to_mlx5_access_flags(qp, attr, attr_mask, &access_flags);
3649                 if (err)
3650                         goto out;
3651
3652                 context->params2 |= access_flags;
3653         }
3654
3655         if (attr_mask & IB_QP_MIN_RNR_TIMER)
3656                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
3657
3658         if (attr_mask & IB_QP_RQ_PSN)
3659                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
3660
3661         if (attr_mask & IB_QP_QKEY)
3662                 context->qkey = cpu_to_be32(attr->qkey);
3663
3664         if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3665                 context->db_rec_addr = cpu_to_be64(qp->db.dma);
3666
3667         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3668                 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
3669                                qp->port) - 1;
3670
3671                 /* Underlay port should be used - index 0 function per port */
3672                 if (qp->flags & MLX5_IB_QP_UNDERLAY)
3673                         port_num = 0;
3674
3675                 if (ibqp->counter)
3676                         set_id = ibqp->counter->id;
3677                 else
3678                         set_id = mlx5_ib_get_counters_id(dev, port_num);
3679                 context->qp_counter_set_usr_page |=
3680                         cpu_to_be32(set_id << 24);
3681         }
3682
3683         if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
3684                 context->sq_crq_size |= cpu_to_be16(1 << 4);
3685
3686         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
3687                 context->deth_sqpn = cpu_to_be32(1);
3688
3689         mlx5_cur = to_mlx5_state(cur_state);
3690         mlx5_new = to_mlx5_state(new_state);
3691
3692         if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
3693             !optab[mlx5_cur][mlx5_new]) {
3694                 err = -EINVAL;
3695                 goto out;
3696         }
3697
3698         op = optab[mlx5_cur][mlx5_new];
3699         optpar = ib_mask_to_mlx5_opt(attr_mask);
3700         optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
3701
3702         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
3703             qp->flags & MLX5_IB_QP_UNDERLAY) {
3704                 struct mlx5_modify_raw_qp_param raw_qp_param = {};
3705
3706                 raw_qp_param.operation = op;
3707                 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3708                         raw_qp_param.rq_q_ctr_id = set_id;
3709                         raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
3710                 }
3711
3712                 if (attr_mask & IB_QP_PORT)
3713                         raw_qp_param.port = attr->port_num;
3714
3715                 if (attr_mask & IB_QP_RATE_LIMIT) {
3716                         raw_qp_param.rl.rate = attr->rate_limit;
3717
3718                         if (ucmd->burst_info.max_burst_sz) {
3719                                 if (attr->rate_limit &&
3720                                     MLX5_CAP_QOS(dev->mdev, packet_pacing_burst_bound)) {
3721                                         raw_qp_param.rl.max_burst_sz =
3722                                                 ucmd->burst_info.max_burst_sz;
3723                                 } else {
3724                                         err = -EINVAL;
3725                                         goto out;
3726                                 }
3727                         }
3728
3729                         if (ucmd->burst_info.typical_pkt_sz) {
3730                                 if (attr->rate_limit &&
3731                                     MLX5_CAP_QOS(dev->mdev, packet_pacing_typical_size)) {
3732                                         raw_qp_param.rl.typical_pkt_sz =
3733                                                 ucmd->burst_info.typical_pkt_sz;
3734                                 } else {
3735                                         err = -EINVAL;
3736                                         goto out;
3737                                 }
3738                         }
3739
3740                         raw_qp_param.set_mask |= MLX5_RAW_QP_RATE_LIMIT;
3741                 }
3742
3743                 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
3744         } else {
3745                 err = mlx5_core_qp_modify(dev->mdev, op, optpar, context,
3746                                           &base->mqp);
3747         }
3748
3749         if (err)
3750                 goto out;
3751
3752         qp->state = new_state;
3753
3754         if (attr_mask & IB_QP_ACCESS_FLAGS)
3755                 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
3756         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
3757                 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
3758         if (attr_mask & IB_QP_PORT)
3759                 qp->port = attr->port_num;
3760         if (attr_mask & IB_QP_ALT_PATH)
3761                 qp->trans_qp.alt_port = attr->alt_port_num;
3762
3763         /*
3764          * If we moved a kernel QP to RESET, clean up all old CQ
3765          * entries and reinitialize the QP.
3766          */
3767         if (new_state == IB_QPS_RESET &&
3768             !ibqp->uobject && ibqp->qp_type != IB_QPT_XRC_TGT) {
3769                 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
3770                                  ibqp->srq ? to_msrq(ibqp->srq) : NULL);
3771                 if (send_cq != recv_cq)
3772                         mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
3773
3774                 qp->rq.head = 0;
3775                 qp->rq.tail = 0;
3776                 qp->sq.head = 0;
3777                 qp->sq.tail = 0;
3778                 qp->sq.cur_post = 0;
3779                 if (qp->sq.wqe_cnt)
3780                         qp->sq.cur_edge = get_sq_edge(&qp->sq, 0);
3781                 qp->db.db[MLX5_RCV_DBR] = 0;
3782                 qp->db.db[MLX5_SND_DBR] = 0;
3783         }
3784
3785         if ((new_state == IB_QPS_RTS) && qp->counter_pending) {
3786                 err = __mlx5_ib_qp_set_counter(ibqp, ibqp->counter);
3787                 if (!err)
3788                         qp->counter_pending = 0;
3789         }
3790
3791 out:
3792         kfree(context);
3793         return err;
3794 }
3795
3796 static inline bool is_valid_mask(int mask, int req, int opt)
3797 {
3798         if ((mask & req) != req)
3799                 return false;
3800
3801         if (mask & ~(req | opt))
3802                 return false;
3803
3804         return true;
3805 }
3806
3807 /* check valid transition for driver QP types
3808  * for now the only QP type that this function supports is DCI
3809  */
3810 static bool modify_dci_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state new_state,
3811                                 enum ib_qp_attr_mask attr_mask)
3812 {
3813         int req = IB_QP_STATE;
3814         int opt = 0;
3815
3816         if (new_state == IB_QPS_RESET) {
3817                 return is_valid_mask(attr_mask, req, opt);
3818         } else if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3819                 req |= IB_QP_PKEY_INDEX | IB_QP_PORT;
3820                 return is_valid_mask(attr_mask, req, opt);
3821         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
3822                 opt = IB_QP_PKEY_INDEX | IB_QP_PORT;
3823                 return is_valid_mask(attr_mask, req, opt);
3824         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
3825                 req |= IB_QP_PATH_MTU;
3826                 opt = IB_QP_PKEY_INDEX | IB_QP_AV;
3827                 return is_valid_mask(attr_mask, req, opt);
3828         } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
3829                 req |= IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY |
3830                        IB_QP_MAX_QP_RD_ATOMIC | IB_QP_SQ_PSN;
3831                 opt = IB_QP_MIN_RNR_TIMER;
3832                 return is_valid_mask(attr_mask, req, opt);
3833         } else if (cur_state == IB_QPS_RTS && new_state == IB_QPS_RTS) {
3834                 opt = IB_QP_MIN_RNR_TIMER;
3835                 return is_valid_mask(attr_mask, req, opt);
3836         } else if (cur_state != IB_QPS_RESET && new_state == IB_QPS_ERR) {
3837                 return is_valid_mask(attr_mask, req, opt);
3838         }
3839         return false;
3840 }
3841
3842 /* mlx5_ib_modify_dct: modify a DCT QP
3843  * valid transitions are:
3844  * RESET to INIT: must set access_flags, pkey_index and port
3845  * INIT  to RTR : must set min_rnr_timer, tclass, flow_label,
3846  *                         mtu, gid_index and hop_limit
3847  * Other transitions and attributes are illegal
3848  */
3849 static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3850                               int attr_mask, struct ib_udata *udata)
3851 {
3852         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3853         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3854         enum ib_qp_state cur_state, new_state;
3855         int err = 0;
3856         int required = IB_QP_STATE;
3857         void *dctc;
3858
3859         if (!(attr_mask & IB_QP_STATE))
3860                 return -EINVAL;
3861
3862         cur_state = qp->state;
3863         new_state = attr->qp_state;
3864
3865         dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
3866         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
3867                 u16 set_id;
3868
3869                 required |= IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PORT;
3870                 if (!is_valid_mask(attr_mask, required, 0))
3871                         return -EINVAL;
3872
3873                 if (attr->port_num == 0 ||
3874                     attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
3875                         mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
3876                                     attr->port_num, dev->num_ports);
3877                         return -EINVAL;
3878                 }
3879                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ)
3880                         MLX5_SET(dctc, dctc, rre, 1);
3881                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE)
3882                         MLX5_SET(dctc, dctc, rwe, 1);
3883                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC) {
3884                         int atomic_mode;
3885
3886                         atomic_mode = get_atomic_mode(dev, MLX5_IB_QPT_DCT);
3887                         if (atomic_mode < 0)
3888                                 return -EOPNOTSUPP;
3889
3890                         MLX5_SET(dctc, dctc, atomic_mode, atomic_mode);
3891                         MLX5_SET(dctc, dctc, rae, 1);
3892                 }
3893                 MLX5_SET(dctc, dctc, pkey_index, attr->pkey_index);
3894                 MLX5_SET(dctc, dctc, port, attr->port_num);
3895
3896                 set_id = mlx5_ib_get_counters_id(dev, attr->port_num - 1);
3897                 MLX5_SET(dctc, dctc, counter_set_id, set_id);
3898
3899         } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
3900                 struct mlx5_ib_modify_qp_resp resp = {};
3901                 u32 out[MLX5_ST_SZ_DW(create_dct_out)] = {0};
3902                 u32 min_resp_len = offsetof(typeof(resp), dctn) +
3903                                    sizeof(resp.dctn);
3904
3905                 if (udata->outlen < min_resp_len)
3906                         return -EINVAL;
3907                 resp.response_length = min_resp_len;
3908
3909                 required |= IB_QP_MIN_RNR_TIMER | IB_QP_AV | IB_QP_PATH_MTU;
3910                 if (!is_valid_mask(attr_mask, required, 0))
3911                         return -EINVAL;
3912                 MLX5_SET(dctc, dctc, min_rnr_nak, attr->min_rnr_timer);
3913                 MLX5_SET(dctc, dctc, tclass, attr->ah_attr.grh.traffic_class);
3914                 MLX5_SET(dctc, dctc, flow_label, attr->ah_attr.grh.flow_label);
3915                 MLX5_SET(dctc, dctc, mtu, attr->path_mtu);
3916                 MLX5_SET(dctc, dctc, my_addr_index, attr->ah_attr.grh.sgid_index);
3917                 MLX5_SET(dctc, dctc, hop_limit, attr->ah_attr.grh.hop_limit);
3918
3919                 err = mlx5_core_create_dct(dev->mdev, &qp->dct.mdct, qp->dct.in,
3920                                            MLX5_ST_SZ_BYTES(create_dct_in), out,
3921                                            sizeof(out));
3922                 if (err)
3923                         return err;
3924                 resp.dctn = qp->dct.mdct.mqp.qpn;
3925                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
3926                 if (err) {
3927                         mlx5_core_destroy_dct(dev->mdev, &qp->dct.mdct);
3928                         return err;
3929                 }
3930         } else {
3931                 mlx5_ib_warn(dev, "Modify DCT: Invalid transition from %d to %d\n", cur_state, new_state);
3932                 return -EINVAL;
3933         }
3934         if (err)
3935                 qp->state = IB_QPS_ERR;
3936         else
3937                 qp->state = new_state;
3938         return err;
3939 }
3940
3941 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3942                       int attr_mask, struct ib_udata *udata)
3943 {
3944         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3945         struct mlx5_ib_qp *qp = to_mqp(ibqp);
3946         struct mlx5_ib_modify_qp ucmd = {};
3947         enum ib_qp_type qp_type;
3948         enum ib_qp_state cur_state, new_state;
3949         size_t required_cmd_sz;
3950         int err = -EINVAL;
3951         int port;
3952
3953         if (ibqp->rwq_ind_tbl)
3954                 return -ENOSYS;
3955
3956         if (udata && udata->inlen) {
3957                 required_cmd_sz = offsetof(typeof(ucmd), reserved) +
3958                         sizeof(ucmd.reserved);
3959                 if (udata->inlen < required_cmd_sz)
3960                         return -EINVAL;
3961
3962                 if (udata->inlen > sizeof(ucmd) &&
3963                     !ib_is_udata_cleared(udata, sizeof(ucmd),
3964                                          udata->inlen - sizeof(ucmd)))
3965                         return -EOPNOTSUPP;
3966
3967                 if (ib_copy_from_udata(&ucmd, udata,
3968                                        min(udata->inlen, sizeof(ucmd))))
3969                         return -EFAULT;
3970
3971                 if (ucmd.comp_mask ||
3972                     memchr_inv(&ucmd.reserved, 0, sizeof(ucmd.reserved)) ||
3973                     memchr_inv(&ucmd.burst_info.reserved, 0,
3974                                sizeof(ucmd.burst_info.reserved)))
3975                         return -EOPNOTSUPP;
3976         }
3977
3978         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
3979                 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
3980
3981         if (ibqp->qp_type == IB_QPT_DRIVER)
3982                 qp_type = qp->qp_sub_type;
3983         else
3984                 qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
3985                         IB_QPT_GSI : ibqp->qp_type;
3986
3987         if (qp_type == MLX5_IB_QPT_DCT)
3988                 return mlx5_ib_modify_dct(ibqp, attr, attr_mask, udata);
3989
3990         mutex_lock(&qp->mutex);
3991
3992         cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
3993         new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
3994
3995         if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
3996                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
3997         }
3998
3999         if (qp->flags & MLX5_IB_QP_UNDERLAY) {
4000                 if (attr_mask & ~(IB_QP_STATE | IB_QP_CUR_STATE)) {
4001                         mlx5_ib_dbg(dev, "invalid attr_mask 0x%x when underlay QP is used\n",
4002                                     attr_mask);
4003                         goto out;
4004                 }
4005         } else if (qp_type != MLX5_IB_QPT_REG_UMR &&
4006                    qp_type != MLX5_IB_QPT_DCI &&
4007                    !ib_modify_qp_is_ok(cur_state, new_state, qp_type,
4008                                        attr_mask)) {
4009                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
4010                             cur_state, new_state, ibqp->qp_type, attr_mask);
4011                 goto out;
4012         } else if (qp_type == MLX5_IB_QPT_DCI &&
4013                    !modify_dci_qp_is_ok(cur_state, new_state, attr_mask)) {
4014                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
4015                             cur_state, new_state, qp_type, attr_mask);
4016                 goto out;
4017         }
4018
4019         if ((attr_mask & IB_QP_PORT) &&
4020             (attr->port_num == 0 ||
4021              attr->port_num > dev->num_ports)) {
4022                 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
4023                             attr->port_num, dev->num_ports);
4024                 goto out;
4025         }
4026
4027         if (attr_mask & IB_QP_PKEY_INDEX) {
4028                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
4029                 if (attr->pkey_index >=
4030                     dev->mdev->port_caps[port - 1].pkey_table_len) {
4031                         mlx5_ib_dbg(dev, "invalid pkey index %d\n",
4032                                     attr->pkey_index);
4033                         goto out;
4034                 }
4035         }
4036
4037         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
4038             attr->max_rd_atomic >
4039             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
4040                 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
4041                             attr->max_rd_atomic);
4042                 goto out;
4043         }
4044
4045         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
4046             attr->max_dest_rd_atomic >
4047             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
4048                 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
4049                             attr->max_dest_rd_atomic);
4050                 goto out;
4051         }
4052
4053         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
4054                 err = 0;
4055                 goto out;
4056         }
4057
4058         err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state,
4059                                   new_state, &ucmd, udata);
4060
4061 out:
4062         mutex_unlock(&qp->mutex);
4063         return err;
4064 }
4065
4066 static void _handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
4067                                    u32 wqe_sz, void **cur_edge)
4068 {
4069         u32 idx;
4070
4071         idx = (sq->cur_post + (wqe_sz >> 2)) & (sq->wqe_cnt - 1);
4072         *cur_edge = get_sq_edge(sq, idx);
4073
4074         *seg = mlx5_frag_buf_get_wqe(&sq->fbc, idx);
4075 }
4076
4077 /* handle_post_send_edge - Check if we get to SQ edge. If yes, update to the
4078  * next nearby edge and get new address translation for current WQE position.
4079  * @sq - SQ buffer.
4080  * @seg: Current WQE position (16B aligned).
4081  * @wqe_sz: Total current WQE size [16B].
4082  * @cur_edge: Updated current edge.
4083  */
4084 static inline void handle_post_send_edge(struct mlx5_ib_wq *sq, void **seg,
4085                                          u32 wqe_sz, void **cur_edge)
4086 {
4087         if (likely(*seg != *cur_edge))
4088                 return;
4089
4090         _handle_post_send_edge(sq, seg, wqe_sz, cur_edge);
4091 }
4092
4093 /* memcpy_send_wqe - copy data from src to WQE and update the relevant WQ's
4094  * pointers. At the end @seg is aligned to 16B regardless the copied size.
4095  * @sq - SQ buffer.
4096  * @cur_edge: Updated current edge.
4097  * @seg: Current WQE position (16B aligned).
4098  * @wqe_sz: Total current WQE size [16B].
4099  * @src: Pointer to copy from.
4100  * @n: Number of bytes to copy.
4101  */
4102 static inline void memcpy_send_wqe(struct mlx5_ib_wq *sq, void **cur_edge,
4103                                    void **seg, u32 *wqe_sz, const void *src,
4104                                    size_t n)
4105 {
4106         while (likely(n)) {
4107                 size_t leftlen = *cur_edge - *seg;
4108                 size_t copysz = min_t(size_t, leftlen, n);
4109                 size_t stride;
4110
4111                 memcpy(*seg, src, copysz);
4112
4113                 n -= copysz;
4114                 src += copysz;
4115                 stride = !n ? ALIGN(copysz, 16) : copysz;
4116                 *seg += stride;
4117                 *wqe_sz += stride >> 4;
4118                 handle_post_send_edge(sq, seg, *wqe_sz, cur_edge);
4119         }
4120 }
4121
4122 static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
4123 {
4124         struct mlx5_ib_cq *cq;
4125         unsigned cur;
4126
4127         cur = wq->head - wq->tail;
4128         if (likely(cur + nreq < wq->max_post))
4129                 return 0;
4130
4131         cq = to_mcq(ib_cq);
4132         spin_lock(&cq->lock);
4133         cur = wq->head - wq->tail;
4134         spin_unlock(&cq->lock);
4135
4136         return cur + nreq >= wq->max_post;
4137 }
4138
4139 static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
4140                                           u64 remote_addr, u32 rkey)
4141 {
4142         rseg->raddr    = cpu_to_be64(remote_addr);
4143         rseg->rkey     = cpu_to_be32(rkey);
4144         rseg->reserved = 0;
4145 }
4146
4147 static void set_eth_seg(const struct ib_send_wr *wr, struct mlx5_ib_qp *qp,
4148                         void **seg, int *size, void **cur_edge)
4149 {
4150         struct mlx5_wqe_eth_seg *eseg = *seg;
4151
4152         memset(eseg, 0, sizeof(struct mlx5_wqe_eth_seg));
4153
4154         if (wr->send_flags & IB_SEND_IP_CSUM)
4155                 eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM |
4156                                  MLX5_ETH_WQE_L4_CSUM;
4157
4158         if (wr->opcode == IB_WR_LSO) {
4159                 struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
4160                 size_t left, copysz;
4161                 void *pdata = ud_wr->header;
4162                 size_t stride;
4163
4164                 left = ud_wr->hlen;
4165                 eseg->mss = cpu_to_be16(ud_wr->mss);
4166                 eseg->inline_hdr.sz = cpu_to_be16(left);
4167
4168                 /* memcpy_send_wqe should get a 16B align address. Hence, we
4169                  * first copy up to the current edge and then, if needed,
4170                  * fall-through to memcpy_send_wqe.
4171                  */
4172                 copysz = min_t(u64, *cur_edge - (void *)eseg->inline_hdr.start,
4173                                left);
4174                 memcpy(eseg->inline_hdr.start, pdata, copysz);
4175                 stride = ALIGN(sizeof(struct mlx5_wqe_eth_seg) -
4176                                sizeof(eseg->inline_hdr.start) + copysz, 16);
4177                 *size += stride / 16;
4178                 *seg += stride;
4179
4180                 if (copysz < left) {
4181                         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4182                         left -= copysz;
4183                         pdata += copysz;
4184                         memcpy_send_wqe(&qp->sq, cur_edge, seg, size, pdata,
4185                                         left);
4186                 }
4187
4188                 return;
4189         }
4190
4191         *seg += sizeof(struct mlx5_wqe_eth_seg);
4192         *size += sizeof(struct mlx5_wqe_eth_seg) / 16;
4193 }
4194
4195 static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
4196                              const struct ib_send_wr *wr)
4197 {
4198         memcpy(&dseg->av, &to_mah(ud_wr(wr)->ah)->av, sizeof(struct mlx5_av));
4199         dseg->av.dqp_dct = cpu_to_be32(ud_wr(wr)->remote_qpn | MLX5_EXTENDED_UD_AV);
4200         dseg->av.key.qkey.qkey = cpu_to_be32(ud_wr(wr)->remote_qkey);
4201 }
4202
4203 static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
4204 {
4205         dseg->byte_count = cpu_to_be32(sg->length);
4206         dseg->lkey       = cpu_to_be32(sg->lkey);
4207         dseg->addr       = cpu_to_be64(sg->addr);
4208 }
4209
4210 static u64 get_xlt_octo(u64 bytes)
4211 {
4212         return ALIGN(bytes, MLX5_IB_UMR_XLT_ALIGNMENT) /
4213                MLX5_IB_UMR_OCTOWORD;
4214 }
4215
4216 static __be64 frwr_mkey_mask(bool atomic)
4217 {
4218         u64 result;
4219
4220         result = MLX5_MKEY_MASK_LEN             |
4221                 MLX5_MKEY_MASK_PAGE_SIZE        |
4222                 MLX5_MKEY_MASK_START_ADDR       |
4223                 MLX5_MKEY_MASK_EN_RINVAL        |
4224                 MLX5_MKEY_MASK_KEY              |
4225                 MLX5_MKEY_MASK_LR               |
4226                 MLX5_MKEY_MASK_LW               |
4227                 MLX5_MKEY_MASK_RR               |
4228                 MLX5_MKEY_MASK_RW               |
4229                 MLX5_MKEY_MASK_SMALL_FENCE      |
4230                 MLX5_MKEY_MASK_FREE;
4231
4232         if (atomic)
4233                 result |= MLX5_MKEY_MASK_A;
4234
4235         return cpu_to_be64(result);
4236 }
4237
4238 static __be64 sig_mkey_mask(void)
4239 {
4240         u64 result;
4241
4242         result = MLX5_MKEY_MASK_LEN             |
4243                 MLX5_MKEY_MASK_PAGE_SIZE        |
4244                 MLX5_MKEY_MASK_START_ADDR       |
4245                 MLX5_MKEY_MASK_EN_SIGERR        |
4246                 MLX5_MKEY_MASK_EN_RINVAL        |
4247                 MLX5_MKEY_MASK_KEY              |
4248                 MLX5_MKEY_MASK_LR               |
4249                 MLX5_MKEY_MASK_LW               |
4250                 MLX5_MKEY_MASK_RR               |
4251                 MLX5_MKEY_MASK_RW               |
4252                 MLX5_MKEY_MASK_SMALL_FENCE      |
4253                 MLX5_MKEY_MASK_FREE             |
4254                 MLX5_MKEY_MASK_BSF_EN;
4255
4256         return cpu_to_be64(result);
4257 }
4258
4259 static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
4260                             struct mlx5_ib_mr *mr, u8 flags, bool atomic)
4261 {
4262         int size = (mr->ndescs + mr->meta_ndescs) * mr->desc_size;
4263
4264         memset(umr, 0, sizeof(*umr));
4265
4266         umr->flags = flags;
4267         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
4268         umr->mkey_mask = frwr_mkey_mask(atomic);
4269 }
4270
4271 static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
4272 {
4273         memset(umr, 0, sizeof(*umr));
4274         umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
4275         umr->flags = MLX5_UMR_INLINE;
4276 }
4277
4278 static __be64 get_umr_enable_mr_mask(void)
4279 {
4280         u64 result;
4281
4282         result = MLX5_MKEY_MASK_KEY |
4283                  MLX5_MKEY_MASK_FREE;
4284
4285         return cpu_to_be64(result);
4286 }
4287
4288 static __be64 get_umr_disable_mr_mask(void)
4289 {
4290         u64 result;
4291
4292         result = MLX5_MKEY_MASK_FREE;
4293
4294         return cpu_to_be64(result);
4295 }
4296
4297 static __be64 get_umr_update_translation_mask(void)
4298 {
4299         u64 result;
4300
4301         result = MLX5_MKEY_MASK_LEN |
4302                  MLX5_MKEY_MASK_PAGE_SIZE |
4303                  MLX5_MKEY_MASK_START_ADDR;
4304
4305         return cpu_to_be64(result);
4306 }
4307
4308 static __be64 get_umr_update_access_mask(int atomic)
4309 {
4310         u64 result;
4311
4312         result = MLX5_MKEY_MASK_LR |
4313                  MLX5_MKEY_MASK_LW |
4314                  MLX5_MKEY_MASK_RR |
4315                  MLX5_MKEY_MASK_RW;
4316
4317         if (atomic)
4318                 result |= MLX5_MKEY_MASK_A;
4319
4320         return cpu_to_be64(result);
4321 }
4322
4323 static __be64 get_umr_update_pd_mask(void)
4324 {
4325         u64 result;
4326
4327         result = MLX5_MKEY_MASK_PD;
4328
4329         return cpu_to_be64(result);
4330 }
4331
4332 static int umr_check_mkey_mask(struct mlx5_ib_dev *dev, u64 mask)
4333 {
4334         if ((mask & MLX5_MKEY_MASK_PAGE_SIZE &&
4335              MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled)) ||
4336             (mask & MLX5_MKEY_MASK_A &&
4337              MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled)))
4338                 return -EPERM;
4339         return 0;
4340 }
4341
4342 static int set_reg_umr_segment(struct mlx5_ib_dev *dev,
4343                                struct mlx5_wqe_umr_ctrl_seg *umr,
4344                                const struct ib_send_wr *wr, int atomic)
4345 {
4346         const struct mlx5_umr_wr *umrwr = umr_wr(wr);
4347
4348         memset(umr, 0, sizeof(*umr));
4349
4350         if (!umrwr->ignore_free_state) {
4351                 if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
4352                          /* fail if free */
4353                         umr->flags = MLX5_UMR_CHECK_FREE;
4354                 else
4355                         /* fail if not free */
4356                         umr->flags = MLX5_UMR_CHECK_NOT_FREE;
4357         }
4358
4359         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(umrwr->xlt_size));
4360         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_XLT) {
4361                 u64 offset = get_xlt_octo(umrwr->offset);
4362
4363                 umr->xlt_offset = cpu_to_be16(offset & 0xffff);
4364                 umr->xlt_offset_47_16 = cpu_to_be32(offset >> 16);
4365                 umr->flags |= MLX5_UMR_TRANSLATION_OFFSET_EN;
4366         }
4367         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION)
4368                 umr->mkey_mask |= get_umr_update_translation_mask();
4369         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD_ACCESS) {
4370                 umr->mkey_mask |= get_umr_update_access_mask(atomic);
4371                 umr->mkey_mask |= get_umr_update_pd_mask();
4372         }
4373         if (wr->send_flags & MLX5_IB_SEND_UMR_ENABLE_MR)
4374                 umr->mkey_mask |= get_umr_enable_mr_mask();
4375         if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
4376                 umr->mkey_mask |= get_umr_disable_mr_mask();
4377
4378         if (!wr->num_sge)
4379                 umr->flags |= MLX5_UMR_INLINE;
4380
4381         return umr_check_mkey_mask(dev, be64_to_cpu(umr->mkey_mask));
4382 }
4383
4384 static u8 get_umr_flags(int acc)
4385 {
4386         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
4387                (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
4388                (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
4389                (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
4390                 MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
4391 }
4392
4393 static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
4394                              struct mlx5_ib_mr *mr,
4395                              u32 key, int access)
4396 {
4397         int ndescs = ALIGN(mr->ndescs + mr->meta_ndescs, 8) >> 1;
4398
4399         memset(seg, 0, sizeof(*seg));
4400
4401         if (mr->access_mode == MLX5_MKC_ACCESS_MODE_MTT)
4402                 seg->log2_page_size = ilog2(mr->ibmr.page_size);
4403         else if (mr->access_mode == MLX5_MKC_ACCESS_MODE_KLMS)
4404                 /* KLMs take twice the size of MTTs */
4405                 ndescs *= 2;
4406
4407         seg->flags = get_umr_flags(access) | mr->access_mode;
4408         seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
4409         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
4410         seg->start_addr = cpu_to_be64(mr->ibmr.iova);
4411         seg->len = cpu_to_be64(mr->ibmr.length);
4412         seg->xlt_oct_size = cpu_to_be32(ndescs);
4413 }
4414
4415 static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
4416 {
4417         memset(seg, 0, sizeof(*seg));
4418         seg->status = MLX5_MKEY_STATUS_FREE;
4419 }
4420
4421 static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg,
4422                                  const struct ib_send_wr *wr)
4423 {
4424         const struct mlx5_umr_wr *umrwr = umr_wr(wr);
4425
4426         memset(seg, 0, sizeof(*seg));
4427         if (wr->send_flags & MLX5_IB_SEND_UMR_DISABLE_MR)
4428                 seg->status = MLX5_MKEY_STATUS_FREE;
4429
4430         seg->flags = convert_access(umrwr->access_flags);
4431         if (umrwr->pd)
4432                 seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
4433         if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION &&
4434             !umrwr->length)
4435                 seg->flags_pd |= cpu_to_be32(MLX5_MKEY_LEN64);
4436
4437         seg->start_addr = cpu_to_be64(umrwr->virt_addr);
4438         seg->len = cpu_to_be64(umrwr->length);
4439         seg->log2_page_size = umrwr->page_shift;
4440         seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
4441                                        mlx5_mkey_variant(umrwr->mkey));
4442 }
4443
4444 static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
4445                              struct mlx5_ib_mr *mr,
4446                              struct mlx5_ib_pd *pd)
4447 {
4448         int bcount = mr->desc_size * (mr->ndescs + mr->meta_ndescs);
4449
4450         dseg->addr = cpu_to_be64(mr->desc_map);
4451         dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
4452         dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
4453 }
4454
4455 static __be32 send_ieth(const struct ib_send_wr *wr)
4456 {
4457         switch (wr->opcode) {
4458         case IB_WR_SEND_WITH_IMM:
4459         case IB_WR_RDMA_WRITE_WITH_IMM:
4460                 return wr->ex.imm_data;
4461
4462         case IB_WR_SEND_WITH_INV:
4463                 return cpu_to_be32(wr->ex.invalidate_rkey);
4464
4465         default:
4466                 return 0;
4467         }
4468 }
4469
4470 static u8 calc_sig(void *wqe, int size)
4471 {
4472         u8 *p = wqe;
4473         u8 res = 0;
4474         int i;
4475
4476         for (i = 0; i < size; i++)
4477                 res ^= p[i];
4478
4479         return ~res;
4480 }
4481
4482 static u8 wq_sig(void *wqe)
4483 {
4484         return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
4485 }
4486
4487 static int set_data_inl_seg(struct mlx5_ib_qp *qp, const struct ib_send_wr *wr,
4488                             void **wqe, int *wqe_sz, void **cur_edge)
4489 {
4490         struct mlx5_wqe_inline_seg *seg;
4491         size_t offset;
4492         int inl = 0;
4493         int i;
4494
4495         seg = *wqe;
4496         *wqe += sizeof(*seg);
4497         offset = sizeof(*seg);
4498
4499         for (i = 0; i < wr->num_sge; i++) {
4500                 size_t len  = wr->sg_list[i].length;
4501                 void *addr = (void *)(unsigned long)(wr->sg_list[i].addr);
4502
4503                 inl += len;
4504
4505                 if (unlikely(inl > qp->max_inline_data))
4506                         return -ENOMEM;
4507
4508                 while (likely(len)) {
4509                         size_t leftlen;
4510                         size_t copysz;
4511
4512                         handle_post_send_edge(&qp->sq, wqe,
4513                                               *wqe_sz + (offset >> 4),
4514                                               cur_edge);
4515
4516                         leftlen = *cur_edge - *wqe;
4517                         copysz = min_t(size_t, leftlen, len);
4518
4519                         memcpy(*wqe, addr, copysz);
4520                         len -= copysz;
4521                         addr += copysz;
4522                         *wqe += copysz;
4523                         offset += copysz;
4524                 }
4525         }
4526
4527         seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
4528
4529         *wqe_sz +=  ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
4530
4531         return 0;
4532 }
4533
4534 static u16 prot_field_size(enum ib_signature_type type)
4535 {
4536         switch (type) {
4537         case IB_SIG_TYPE_T10_DIF:
4538                 return MLX5_DIF_SIZE;
4539         default:
4540                 return 0;
4541         }
4542 }
4543
4544 static u8 bs_selector(int block_size)
4545 {
4546         switch (block_size) {
4547         case 512:           return 0x1;
4548         case 520:           return 0x2;
4549         case 4096:          return 0x3;
4550         case 4160:          return 0x4;
4551         case 1073741824:    return 0x5;
4552         default:            return 0;
4553         }
4554 }
4555
4556 static void mlx5_fill_inl_bsf(struct ib_sig_domain *domain,
4557                               struct mlx5_bsf_inl *inl)
4558 {
4559         /* Valid inline section and allow BSF refresh */
4560         inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID |
4561                                        MLX5_BSF_REFRESH_DIF);
4562         inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag);
4563         inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag);
4564         /* repeating block */
4565         inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK;
4566         inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ?
4567                         MLX5_DIF_CRC : MLX5_DIF_IPCS;
4568
4569         if (domain->sig.dif.ref_remap)
4570                 inl->dif_inc_ref_guard_check |= MLX5_BSF_INC_REFTAG;
4571
4572         if (domain->sig.dif.app_escape) {
4573                 if (domain->sig.dif.ref_escape)
4574                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPREF_ESCAPE;
4575                 else
4576                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPTAG_ESCAPE;
4577         }
4578
4579         inl->dif_app_bitmask_check =
4580                 cpu_to_be16(domain->sig.dif.apptag_check_mask);
4581 }
4582
4583 static int mlx5_set_bsf(struct ib_mr *sig_mr,
4584                         struct ib_sig_attrs *sig_attrs,
4585                         struct mlx5_bsf *bsf, u32 data_size)
4586 {
4587         struct mlx5_core_sig_ctx *msig = to_mmr(sig_mr)->sig;
4588         struct mlx5_bsf_basic *basic = &bsf->basic;
4589         struct ib_sig_domain *mem = &sig_attrs->mem;
4590         struct ib_sig_domain *wire = &sig_attrs->wire;
4591
4592         memset(bsf, 0, sizeof(*bsf));
4593
4594         /* Basic + Extended + Inline */
4595         basic->bsf_size_sbs = 1 << 7;
4596         /* Input domain check byte mask */
4597         basic->check_byte_mask = sig_attrs->check_mask;
4598         basic->raw_data_size = cpu_to_be32(data_size);
4599
4600         /* Memory domain */
4601         switch (sig_attrs->mem.sig_type) {
4602         case IB_SIG_TYPE_NONE:
4603                 break;
4604         case IB_SIG_TYPE_T10_DIF:
4605                 basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval);
4606                 basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx);
4607                 mlx5_fill_inl_bsf(mem, &bsf->m_inl);
4608                 break;
4609         default:
4610                 return -EINVAL;
4611         }
4612
4613         /* Wire domain */
4614         switch (sig_attrs->wire.sig_type) {
4615         case IB_SIG_TYPE_NONE:
4616                 break;
4617         case IB_SIG_TYPE_T10_DIF:
4618                 if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval &&
4619                     mem->sig_type == wire->sig_type) {
4620                         /* Same block structure */
4621                         basic->bsf_size_sbs |= 1 << 4;
4622                         if (mem->sig.dif.bg_type == wire->sig.dif.bg_type)
4623                                 basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK;
4624                         if (mem->sig.dif.app_tag == wire->sig.dif.app_tag)
4625                                 basic->wire.copy_byte_mask |= MLX5_CPY_APP_MASK;
4626                         if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag)
4627                                 basic->wire.copy_byte_mask |= MLX5_CPY_REF_MASK;
4628                 } else
4629                         basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval);
4630
4631                 basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx);
4632                 mlx5_fill_inl_bsf(wire, &bsf->w_inl);
4633                 break;
4634         default:
4635                 return -EINVAL;
4636         }
4637
4638         return 0;
4639 }
4640
4641 static int set_sig_data_segment(const struct ib_send_wr *send_wr,
4642                                 struct ib_mr *sig_mr,
4643                                 struct ib_sig_attrs *sig_attrs,
4644                                 struct mlx5_ib_qp *qp, void **seg, int *size,
4645                                 void **cur_edge)
4646 {
4647         struct mlx5_bsf *bsf;
4648         u32 data_len;
4649         u32 data_key;
4650         u64 data_va;
4651         u32 prot_len = 0;
4652         u32 prot_key = 0;
4653         u64 prot_va = 0;
4654         bool prot = false;
4655         int ret;
4656         int wqe_size;
4657         struct mlx5_ib_mr *mr = to_mmr(sig_mr);
4658         struct mlx5_ib_mr *pi_mr = mr->pi_mr;
4659
4660         data_len = pi_mr->data_length;
4661         data_key = pi_mr->ibmr.lkey;
4662         data_va = pi_mr->data_iova;
4663         if (pi_mr->meta_ndescs) {
4664                 prot_len = pi_mr->meta_length;
4665                 prot_key = pi_mr->ibmr.lkey;
4666                 prot_va = pi_mr->pi_iova;
4667                 prot = true;
4668         }
4669
4670         if (!prot || (data_key == prot_key && data_va == prot_va &&
4671                       data_len == prot_len)) {
4672                 /**
4673                  * Source domain doesn't contain signature information
4674                  * or data and protection are interleaved in memory.
4675                  * So need construct:
4676                  *                  ------------------
4677                  *                 |     data_klm     |
4678                  *                  ------------------
4679                  *                 |       BSF        |
4680                  *                  ------------------
4681                  **/
4682                 struct mlx5_klm *data_klm = *seg;
4683
4684                 data_klm->bcount = cpu_to_be32(data_len);
4685                 data_klm->key = cpu_to_be32(data_key);
4686                 data_klm->va = cpu_to_be64(data_va);
4687                 wqe_size = ALIGN(sizeof(*data_klm), 64);
4688         } else {
4689                 /**
4690                  * Source domain contains signature information
4691                  * So need construct a strided block format:
4692                  *               ---------------------------
4693                  *              |     stride_block_ctrl     |
4694                  *               ---------------------------
4695                  *              |          data_klm         |
4696                  *               ---------------------------
4697                  *              |          prot_klm         |
4698                  *               ---------------------------
4699                  *              |             BSF           |
4700                  *               ---------------------------
4701                  **/
4702                 struct mlx5_stride_block_ctrl_seg *sblock_ctrl;
4703                 struct mlx5_stride_block_entry *data_sentry;
4704                 struct mlx5_stride_block_entry *prot_sentry;
4705                 u16 block_size = sig_attrs->mem.sig.dif.pi_interval;
4706                 int prot_size;
4707
4708                 sblock_ctrl = *seg;
4709                 data_sentry = (void *)sblock_ctrl + sizeof(*sblock_ctrl);
4710                 prot_sentry = (void *)data_sentry + sizeof(*data_sentry);
4711
4712                 prot_size = prot_field_size(sig_attrs->mem.sig_type);
4713                 if (!prot_size) {
4714                         pr_err("Bad block size given: %u\n", block_size);
4715                         return -EINVAL;
4716                 }
4717                 sblock_ctrl->bcount_per_cycle = cpu_to_be32(block_size +
4718                                                             prot_size);
4719                 sblock_ctrl->op = cpu_to_be32(MLX5_STRIDE_BLOCK_OP);
4720                 sblock_ctrl->repeat_count = cpu_to_be32(data_len / block_size);
4721                 sblock_ctrl->num_entries = cpu_to_be16(2);
4722
4723                 data_sentry->bcount = cpu_to_be16(block_size);
4724                 data_sentry->key = cpu_to_be32(data_key);
4725                 data_sentry->va = cpu_to_be64(data_va);
4726                 data_sentry->stride = cpu_to_be16(block_size);
4727
4728                 prot_sentry->bcount = cpu_to_be16(prot_size);
4729                 prot_sentry->key = cpu_to_be32(prot_key);
4730                 prot_sentry->va = cpu_to_be64(prot_va);
4731                 prot_sentry->stride = cpu_to_be16(prot_size);
4732
4733                 wqe_size = ALIGN(sizeof(*sblock_ctrl) + sizeof(*data_sentry) +
4734                                  sizeof(*prot_sentry), 64);
4735         }
4736
4737         *seg += wqe_size;
4738         *size += wqe_size / 16;
4739         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4740
4741         bsf = *seg;
4742         ret = mlx5_set_bsf(sig_mr, sig_attrs, bsf, data_len);
4743         if (ret)
4744                 return -EINVAL;
4745
4746         *seg += sizeof(*bsf);
4747         *size += sizeof(*bsf) / 16;
4748         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4749
4750         return 0;
4751 }
4752
4753 static void set_sig_mkey_segment(struct mlx5_mkey_seg *seg,
4754                                  struct ib_mr *sig_mr, int access_flags,
4755                                  u32 size, u32 length, u32 pdn)
4756 {
4757         u32 sig_key = sig_mr->rkey;
4758         u8 sigerr = to_mmr(sig_mr)->sig->sigerr_count & 1;
4759
4760         memset(seg, 0, sizeof(*seg));
4761
4762         seg->flags = get_umr_flags(access_flags) | MLX5_MKC_ACCESS_MODE_KLMS;
4763         seg->qpn_mkey7_0 = cpu_to_be32((sig_key & 0xff) | 0xffffff00);
4764         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL | sigerr << 26 |
4765                                     MLX5_MKEY_BSF_EN | pdn);
4766         seg->len = cpu_to_be64(length);
4767         seg->xlt_oct_size = cpu_to_be32(get_xlt_octo(size));
4768         seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
4769 }
4770
4771 static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
4772                                 u32 size)
4773 {
4774         memset(umr, 0, sizeof(*umr));
4775
4776         umr->flags = MLX5_FLAGS_INLINE | MLX5_FLAGS_CHECK_FREE;
4777         umr->xlt_octowords = cpu_to_be16(get_xlt_octo(size));
4778         umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);
4779         umr->mkey_mask = sig_mkey_mask();
4780 }
4781
4782 static int set_pi_umr_wr(const struct ib_send_wr *send_wr,
4783                          struct mlx5_ib_qp *qp, void **seg, int *size,
4784                          void **cur_edge)
4785 {
4786         const struct ib_reg_wr *wr = reg_wr(send_wr);
4787         struct mlx5_ib_mr *sig_mr = to_mmr(wr->mr);
4788         struct mlx5_ib_mr *pi_mr = sig_mr->pi_mr;
4789         struct ib_sig_attrs *sig_attrs = sig_mr->ibmr.sig_attrs;
4790         u32 pdn = get_pd(qp)->pdn;
4791         u32 xlt_size;
4792         int region_len, ret;
4793
4794         if (unlikely(send_wr->num_sge != 0) ||
4795             unlikely(wr->access & IB_ACCESS_REMOTE_ATOMIC) ||
4796             unlikely(!sig_mr->sig) || unlikely(!qp->ibqp.integrity_en) ||
4797             unlikely(!sig_mr->sig->sig_status_checked))
4798                 return -EINVAL;
4799
4800         /* length of the protected region, data + protection */
4801         region_len = pi_mr->ibmr.length;
4802
4803         /**
4804          * KLM octoword size - if protection was provided
4805          * then we use strided block format (3 octowords),
4806          * else we use single KLM (1 octoword)
4807          **/
4808         if (sig_attrs->mem.sig_type != IB_SIG_TYPE_NONE)
4809                 xlt_size = 0x30;
4810         else
4811                 xlt_size = sizeof(struct mlx5_klm);
4812
4813         set_sig_umr_segment(*seg, xlt_size);
4814         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4815         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4816         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4817
4818         set_sig_mkey_segment(*seg, wr->mr, wr->access, xlt_size, region_len,
4819                              pdn);
4820         *seg += sizeof(struct mlx5_mkey_seg);
4821         *size += sizeof(struct mlx5_mkey_seg) / 16;
4822         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4823
4824         ret = set_sig_data_segment(send_wr, wr->mr, sig_attrs, qp, seg, size,
4825                                    cur_edge);
4826         if (ret)
4827                 return ret;
4828
4829         sig_mr->sig->sig_status_checked = false;
4830         return 0;
4831 }
4832
4833 static int set_psv_wr(struct ib_sig_domain *domain,
4834                       u32 psv_idx, void **seg, int *size)
4835 {
4836         struct mlx5_seg_set_psv *psv_seg = *seg;
4837
4838         memset(psv_seg, 0, sizeof(*psv_seg));
4839         psv_seg->psv_num = cpu_to_be32(psv_idx);
4840         switch (domain->sig_type) {
4841         case IB_SIG_TYPE_NONE:
4842                 break;
4843         case IB_SIG_TYPE_T10_DIF:
4844                 psv_seg->transient_sig = cpu_to_be32(domain->sig.dif.bg << 16 |
4845                                                      domain->sig.dif.app_tag);
4846                 psv_seg->ref_tag = cpu_to_be32(domain->sig.dif.ref_tag);
4847                 break;
4848         default:
4849                 pr_err("Bad signature type (%d) is given.\n",
4850                        domain->sig_type);
4851                 return -EINVAL;
4852         }
4853
4854         *seg += sizeof(*psv_seg);
4855         *size += sizeof(*psv_seg) / 16;
4856
4857         return 0;
4858 }
4859
4860 static int set_reg_wr(struct mlx5_ib_qp *qp,
4861                       const struct ib_reg_wr *wr,
4862                       void **seg, int *size, void **cur_edge,
4863                       bool check_not_free)
4864 {
4865         struct mlx5_ib_mr *mr = to_mmr(wr->mr);
4866         struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
4867         struct mlx5_ib_dev *dev = to_mdev(pd->ibpd.device);
4868         int mr_list_size = (mr->ndescs + mr->meta_ndescs) * mr->desc_size;
4869         bool umr_inline = mr_list_size <= MLX5_IB_SQ_UMR_INLINE_THRESHOLD;
4870         bool atomic = wr->access & IB_ACCESS_REMOTE_ATOMIC;
4871         u8 flags = 0;
4872
4873         if (!mlx5_ib_can_use_umr(dev, atomic, wr->access)) {
4874                 mlx5_ib_warn(to_mdev(qp->ibqp.device),
4875                              "Fast update of %s for MR is disabled\n",
4876                              (MLX5_CAP_GEN(dev->mdev,
4877                                            umr_modify_entity_size_disabled)) ?
4878                                      "entity size" :
4879                                      "atomic access");
4880                 return -EINVAL;
4881         }
4882
4883         if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
4884                 mlx5_ib_warn(to_mdev(qp->ibqp.device),
4885                              "Invalid IB_SEND_INLINE send flag\n");
4886                 return -EINVAL;
4887         }
4888
4889         if (check_not_free)
4890                 flags |= MLX5_UMR_CHECK_NOT_FREE;
4891         if (umr_inline)
4892                 flags |= MLX5_UMR_INLINE;
4893
4894         set_reg_umr_seg(*seg, mr, flags, atomic);
4895         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4896         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4897         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4898
4899         set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
4900         *seg += sizeof(struct mlx5_mkey_seg);
4901         *size += sizeof(struct mlx5_mkey_seg) / 16;
4902         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4903
4904         if (umr_inline) {
4905                 memcpy_send_wqe(&qp->sq, cur_edge, seg, size, mr->descs,
4906                                 mr_list_size);
4907                 *size = ALIGN(*size, MLX5_SEND_WQE_BB >> 4);
4908         } else {
4909                 set_reg_data_seg(*seg, mr, pd);
4910                 *seg += sizeof(struct mlx5_wqe_data_seg);
4911                 *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
4912         }
4913         return 0;
4914 }
4915
4916 static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size,
4917                         void **cur_edge)
4918 {
4919         set_linv_umr_seg(*seg);
4920         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4921         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4922         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4923         set_linv_mkey_seg(*seg);
4924         *seg += sizeof(struct mlx5_mkey_seg);
4925         *size += sizeof(struct mlx5_mkey_seg) / 16;
4926         handle_post_send_edge(&qp->sq, seg, *size, cur_edge);
4927 }
4928
4929 static void dump_wqe(struct mlx5_ib_qp *qp, u32 idx, int size_16)
4930 {
4931         __be32 *p = NULL;
4932         int i, j;
4933
4934         pr_debug("dump WQE index %u:\n", idx);
4935         for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
4936                 if ((i & 0xf) == 0) {
4937                         p = mlx5_frag_buf_get_wqe(&qp->sq.fbc, idx);
4938                         pr_debug("WQBB at %p:\n", (void *)p);
4939                         j = 0;
4940                         idx = (idx + 1) & (qp->sq.wqe_cnt - 1);
4941                 }
4942                 pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
4943                          be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
4944                          be32_to_cpu(p[j + 3]));
4945         }
4946 }
4947
4948 static int __begin_wqe(struct mlx5_ib_qp *qp, void **seg,
4949                        struct mlx5_wqe_ctrl_seg **ctrl,
4950                        const struct ib_send_wr *wr, unsigned int *idx,
4951                        int *size, void **cur_edge, int nreq,
4952                        bool send_signaled, bool solicited)
4953 {
4954         if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)))
4955                 return -ENOMEM;
4956
4957         *idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
4958         *seg = mlx5_frag_buf_get_wqe(&qp->sq.fbc, *idx);
4959         *ctrl = *seg;
4960         *(uint32_t *)(*seg + 8) = 0;
4961         (*ctrl)->imm = send_ieth(wr);
4962         (*ctrl)->fm_ce_se = qp->sq_signal_bits |
4963                 (send_signaled ? MLX5_WQE_CTRL_CQ_UPDATE : 0) |
4964                 (solicited ? MLX5_WQE_CTRL_SOLICITED : 0);
4965
4966         *seg += sizeof(**ctrl);
4967         *size = sizeof(**ctrl) / 16;
4968         *cur_edge = qp->sq.cur_edge;
4969
4970         return 0;
4971 }
4972
4973 static int begin_wqe(struct mlx5_ib_qp *qp, void **seg,
4974                      struct mlx5_wqe_ctrl_seg **ctrl,
4975                      const struct ib_send_wr *wr, unsigned *idx,
4976                      int *size, void **cur_edge, int nreq)
4977 {
4978         return __begin_wqe(qp, seg, ctrl, wr, idx, size, cur_edge, nreq,
4979                            wr->send_flags & IB_SEND_SIGNALED,
4980                            wr->send_flags & IB_SEND_SOLICITED);
4981 }
4982
4983 static void finish_wqe(struct mlx5_ib_qp *qp,
4984                        struct mlx5_wqe_ctrl_seg *ctrl,
4985                        void *seg, u8 size, void *cur_edge,
4986                        unsigned int idx, u64 wr_id, int nreq, u8 fence,
4987                        u32 mlx5_opcode)
4988 {
4989         u8 opmod = 0;
4990
4991         ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
4992                                              mlx5_opcode | ((u32)opmod << 24));
4993         ctrl->qpn_ds = cpu_to_be32(size | (qp->trans_qp.base.mqp.qpn << 8));
4994         ctrl->fm_ce_se |= fence;
4995         if (unlikely(qp->wq_sig))
4996                 ctrl->signature = wq_sig(ctrl);
4997
4998         qp->sq.wrid[idx] = wr_id;
4999         qp->sq.w_list[idx].opcode = mlx5_opcode;
5000         qp->sq.wqe_head[idx] = qp->sq.head + nreq;
5001         qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
5002         qp->sq.w_list[idx].next = qp->sq.cur_post;
5003
5004         /* We save the edge which was possibly updated during the WQE
5005          * construction, into SQ's cache.
5006          */
5007         seg = PTR_ALIGN(seg, MLX5_SEND_WQE_BB);
5008         qp->sq.cur_edge = (unlikely(seg == cur_edge)) ?
5009                           get_sq_edge(&qp->sq, qp->sq.cur_post &
5010                                       (qp->sq.wqe_cnt - 1)) :
5011                           cur_edge;
5012 }
5013
5014 static int _mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
5015                               const struct ib_send_wr **bad_wr, bool drain)
5016 {
5017         struct mlx5_wqe_ctrl_seg *ctrl = NULL;  /* compiler warning */
5018         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
5019         struct mlx5_core_dev *mdev = dev->mdev;
5020         struct ib_reg_wr reg_pi_wr;
5021         struct mlx5_ib_qp *qp;
5022         struct mlx5_ib_mr *mr;
5023         struct mlx5_ib_mr *pi_mr;
5024         struct mlx5_ib_mr pa_pi_mr;
5025         struct ib_sig_attrs *sig_attrs;
5026         struct mlx5_wqe_xrc_seg *xrc;
5027         struct mlx5_bf *bf;
5028         void *cur_edge;
5029         int uninitialized_var(size);
5030         unsigned long flags;
5031         unsigned idx;
5032         int err = 0;
5033         int num_sge;
5034         void *seg;
5035         int nreq;
5036         int i;
5037         u8 next_fence = 0;
5038         u8 fence;
5039
5040         if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR &&
5041                      !drain)) {
5042                 *bad_wr = wr;
5043                 return -EIO;
5044         }
5045
5046         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
5047                 return mlx5_ib_gsi_post_send(ibqp, wr, bad_wr);
5048
5049         qp = to_mqp(ibqp);
5050         bf = &qp->bf;
5051
5052         spin_lock_irqsave(&qp->sq.lock, flags);
5053
5054         for (nreq = 0; wr; nreq++, wr = wr->next) {
5055                 if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
5056                         mlx5_ib_warn(dev, "\n");
5057                         err = -EINVAL;
5058                         *bad_wr = wr;
5059                         goto out;
5060                 }
5061
5062                 num_sge = wr->num_sge;
5063                 if (unlikely(num_sge > qp->sq.max_gs)) {
5064                         mlx5_ib_warn(dev, "\n");
5065                         err = -EINVAL;
5066                         *bad_wr = wr;
5067                         goto out;
5068                 }
5069
5070                 err = begin_wqe(qp, &seg, &ctrl, wr, &idx, &size, &cur_edge,
5071                                 nreq);
5072                 if (err) {
5073                         mlx5_ib_warn(dev, "\n");
5074                         err = -ENOMEM;
5075                         *bad_wr = wr;
5076                         goto out;
5077                 }
5078
5079                 if (wr->opcode == IB_WR_REG_MR ||
5080                     wr->opcode == IB_WR_REG_MR_INTEGRITY) {
5081                         fence = dev->umr_fence;
5082                         next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
5083                 } else  {
5084                         if (wr->send_flags & IB_SEND_FENCE) {
5085                                 if (qp->next_fence)
5086                                         fence = MLX5_FENCE_MODE_SMALL_AND_FENCE;
5087                                 else
5088                                         fence = MLX5_FENCE_MODE_FENCE;
5089                         } else {
5090                                 fence = qp->next_fence;
5091                         }
5092                 }
5093
5094                 switch (ibqp->qp_type) {
5095                 case IB_QPT_XRC_INI:
5096                         xrc = seg;
5097                         seg += sizeof(*xrc);
5098                         size += sizeof(*xrc) / 16;
5099                         /* fall through */
5100                 case IB_QPT_RC:
5101                         switch (wr->opcode) {
5102                         case IB_WR_RDMA_READ:
5103                         case IB_WR_RDMA_WRITE:
5104                         case IB_WR_RDMA_WRITE_WITH_IMM:
5105                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
5106                                               rdma_wr(wr)->rkey);
5107                                 seg += sizeof(struct mlx5_wqe_raddr_seg);
5108                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
5109                                 break;
5110
5111                         case IB_WR_ATOMIC_CMP_AND_SWP:
5112                         case IB_WR_ATOMIC_FETCH_AND_ADD:
5113                         case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
5114                                 mlx5_ib_warn(dev, "Atomic operations are not supported yet\n");
5115                                 err = -ENOSYS;
5116                                 *bad_wr = wr;
5117                                 goto out;
5118
5119                         case IB_WR_LOCAL_INV:
5120                                 qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
5121                                 ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
5122                                 set_linv_wr(qp, &seg, &size, &cur_edge);
5123                                 num_sge = 0;
5124                                 break;
5125
5126                         case IB_WR_REG_MR:
5127                                 qp->sq.wr_data[idx] = IB_WR_REG_MR;
5128                                 ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
5129                                 err = set_reg_wr(qp, reg_wr(wr), &seg, &size,
5130                                                  &cur_edge, true);
5131                                 if (err) {
5132                                         *bad_wr = wr;
5133                                         goto out;
5134                                 }
5135                                 num_sge = 0;
5136                                 break;
5137
5138                         case IB_WR_REG_MR_INTEGRITY:
5139                                 qp->sq.wr_data[idx] = IB_WR_REG_MR_INTEGRITY;
5140
5141                                 mr = to_mmr(reg_wr(wr)->mr);
5142                                 pi_mr = mr->pi_mr;
5143
5144                                 if (pi_mr) {
5145                                         memset(&reg_pi_wr, 0,
5146                                                sizeof(struct ib_reg_wr));
5147
5148                                         reg_pi_wr.mr = &pi_mr->ibmr;
5149                                         reg_pi_wr.access = reg_wr(wr)->access;
5150                                         reg_pi_wr.key = pi_mr->ibmr.rkey;
5151
5152                                         ctrl->imm = cpu_to_be32(reg_pi_wr.key);
5153                                         /* UMR for data + prot registration */
5154                                         err = set_reg_wr(qp, &reg_pi_wr, &seg,
5155                                                          &size, &cur_edge,
5156                                                          false);
5157                                         if (err) {
5158                                                 *bad_wr = wr;
5159                                                 goto out;
5160                                         }
5161                                         finish_wqe(qp, ctrl, seg, size,
5162                                                    cur_edge, idx, wr->wr_id,
5163                                                    nreq, fence,
5164                                                    MLX5_OPCODE_UMR);
5165
5166                                         err = begin_wqe(qp, &seg, &ctrl, wr,
5167                                                         &idx, &size, &cur_edge,
5168                                                         nreq);
5169                                         if (err) {
5170                                                 mlx5_ib_warn(dev, "\n");
5171                                                 err = -ENOMEM;
5172                                                 *bad_wr = wr;
5173                                                 goto out;
5174                                         }
5175                                 } else {
5176                                         memset(&pa_pi_mr, 0,
5177                                                sizeof(struct mlx5_ib_mr));
5178                                         /* No UMR, use local_dma_lkey */
5179                                         pa_pi_mr.ibmr.lkey =
5180                                                 mr->ibmr.pd->local_dma_lkey;
5181
5182                                         pa_pi_mr.ndescs = mr->ndescs;
5183                                         pa_pi_mr.data_length = mr->data_length;
5184                                         pa_pi_mr.data_iova = mr->data_iova;
5185                                         if (mr->meta_ndescs) {
5186                                                 pa_pi_mr.meta_ndescs =
5187                                                         mr->meta_ndescs;
5188                                                 pa_pi_mr.meta_length =
5189                                                         mr->meta_length;
5190                                                 pa_pi_mr.pi_iova = mr->pi_iova;
5191                                         }
5192
5193                                         pa_pi_mr.ibmr.length = mr->ibmr.length;
5194                                         mr->pi_mr = &pa_pi_mr;
5195                                 }
5196                                 ctrl->imm = cpu_to_be32(mr->ibmr.rkey);
5197                                 /* UMR for sig MR */
5198                                 err = set_pi_umr_wr(wr, qp, &seg, &size,
5199                                                     &cur_edge);
5200                                 if (err) {
5201                                         mlx5_ib_warn(dev, "\n");
5202                                         *bad_wr = wr;
5203                                         goto out;
5204                                 }
5205                                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
5206                                            wr->wr_id, nreq, fence,
5207                                            MLX5_OPCODE_UMR);
5208
5209                                 /*
5210                                  * SET_PSV WQEs are not signaled and solicited
5211                                  * on error
5212                                  */
5213                                 sig_attrs = mr->ibmr.sig_attrs;
5214                                 err = __begin_wqe(qp, &seg, &ctrl, wr, &idx,
5215                                                   &size, &cur_edge, nreq, false,
5216                                                   true);
5217                                 if (err) {
5218                                         mlx5_ib_warn(dev, "\n");
5219                                         err = -ENOMEM;
5220                                         *bad_wr = wr;
5221                                         goto out;
5222                                 }
5223                                 err = set_psv_wr(&sig_attrs->mem,
5224                                                  mr->sig->psv_memory.psv_idx,
5225                                                  &seg, &size);
5226                                 if (err) {
5227                                         mlx5_ib_warn(dev, "\n");
5228                                         *bad_wr = wr;
5229                                         goto out;
5230                                 }
5231                                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
5232                                            wr->wr_id, nreq, next_fence,
5233                                            MLX5_OPCODE_SET_PSV);
5234
5235                                 err = __begin_wqe(qp, &seg, &ctrl, wr, &idx,
5236                                                   &size, &cur_edge, nreq, false,
5237                                                   true);
5238                                 if (err) {
5239                                         mlx5_ib_warn(dev, "\n");
5240                                         err = -ENOMEM;
5241                                         *bad_wr = wr;
5242                                         goto out;
5243                                 }
5244                                 err = set_psv_wr(&sig_attrs->wire,
5245                                                  mr->sig->psv_wire.psv_idx,
5246                                                  &seg, &size);
5247                                 if (err) {
5248                                         mlx5_ib_warn(dev, "\n");
5249                                         *bad_wr = wr;
5250                                         goto out;
5251                                 }
5252                                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx,
5253                                            wr->wr_id, nreq, next_fence,
5254                                            MLX5_OPCODE_SET_PSV);
5255
5256                                 qp->next_fence =
5257                                         MLX5_FENCE_MODE_INITIATOR_SMALL;
5258                                 num_sge = 0;
5259                                 goto skip_psv;
5260
5261                         default:
5262                                 break;
5263                         }
5264                         break;
5265
5266                 case IB_QPT_UC:
5267                         switch (wr->opcode) {
5268                         case IB_WR_RDMA_WRITE:
5269                         case IB_WR_RDMA_WRITE_WITH_IMM:
5270                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
5271                                               rdma_wr(wr)->rkey);
5272                                 seg  += sizeof(struct mlx5_wqe_raddr_seg);
5273                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
5274                                 break;
5275
5276                         default:
5277                                 break;
5278                         }
5279                         break;
5280
5281                 case IB_QPT_SMI:
5282                         if (unlikely(!mdev->port_caps[qp->port - 1].has_smi)) {
5283                                 mlx5_ib_warn(dev, "Send SMP MADs is not allowed\n");
5284                                 err = -EPERM;
5285                                 *bad_wr = wr;
5286                                 goto out;
5287                         }
5288                         /* fall through */
5289                 case MLX5_IB_QPT_HW_GSI:
5290                         set_datagram_seg(seg, wr);
5291                         seg += sizeof(struct mlx5_wqe_datagram_seg);
5292                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
5293                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5294
5295                         break;
5296                 case IB_QPT_UD:
5297                         set_datagram_seg(seg, wr);
5298                         seg += sizeof(struct mlx5_wqe_datagram_seg);
5299                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
5300                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5301
5302                         /* handle qp that supports ud offload */
5303                         if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) {
5304                                 struct mlx5_wqe_eth_pad *pad;
5305
5306                                 pad = seg;
5307                                 memset(pad, 0, sizeof(struct mlx5_wqe_eth_pad));
5308                                 seg += sizeof(struct mlx5_wqe_eth_pad);
5309                                 size += sizeof(struct mlx5_wqe_eth_pad) / 16;
5310                                 set_eth_seg(wr, qp, &seg, &size, &cur_edge);
5311                                 handle_post_send_edge(&qp->sq, &seg, size,
5312                                                       &cur_edge);
5313                         }
5314                         break;
5315                 case MLX5_IB_QPT_REG_UMR:
5316                         if (wr->opcode != MLX5_IB_WR_UMR) {
5317                                 err = -EINVAL;
5318                                 mlx5_ib_warn(dev, "bad opcode\n");
5319                                 goto out;
5320                         }
5321                         qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
5322                         ctrl->imm = cpu_to_be32(umr_wr(wr)->mkey);
5323                         err = set_reg_umr_segment(dev, seg, wr, !!(MLX5_CAP_GEN(mdev, atomic)));
5324                         if (unlikely(err))
5325                                 goto out;
5326                         seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
5327                         size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
5328                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5329                         set_reg_mkey_segment(seg, wr);
5330                         seg += sizeof(struct mlx5_mkey_seg);
5331                         size += sizeof(struct mlx5_mkey_seg) / 16;
5332                         handle_post_send_edge(&qp->sq, &seg, size, &cur_edge);
5333                         break;
5334
5335                 default:
5336                         break;
5337                 }
5338
5339                 if (wr->send_flags & IB_SEND_INLINE && num_sge) {
5340                         err = set_data_inl_seg(qp, wr, &seg, &size, &cur_edge);
5341                         if (unlikely(err)) {
5342                                 mlx5_ib_warn(dev, "\n");
5343                                 *bad_wr = wr;
5344                                 goto out;
5345                         }
5346                 } else {
5347                         for (i = 0; i < num_sge; i++) {
5348                                 handle_post_send_edge(&qp->sq, &seg, size,
5349                                                       &cur_edge);
5350                                 if (likely(wr->sg_list[i].length)) {
5351                                         set_data_ptr_seg
5352                                         ((struct mlx5_wqe_data_seg *)seg,
5353                                          wr->sg_list + i);
5354                                         size += sizeof(struct mlx5_wqe_data_seg) / 16;
5355                                         seg += sizeof(struct mlx5_wqe_data_seg);
5356                                 }
5357                         }
5358                 }
5359
5360                 qp->next_fence = next_fence;
5361                 finish_wqe(qp, ctrl, seg, size, cur_edge, idx, wr->wr_id, nreq,
5362                            fence, mlx5_ib_opcode[wr->opcode]);
5363 skip_psv:
5364                 if (0)
5365                         dump_wqe(qp, idx, size);
5366         }
5367
5368 out:
5369         if (likely(nreq)) {
5370                 qp->sq.head += nreq;
5371
5372                 /* Make sure that descriptors are written before
5373                  * updating doorbell record and ringing the doorbell
5374                  */
5375                 wmb();
5376
5377                 qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
5378
5379                 /* Make sure doorbell record is visible to the HCA before
5380                  * we hit doorbell */
5381                 wmb();
5382
5383                 mlx5_write64((__be32 *)ctrl, bf->bfreg->map + bf->offset);
5384                 /* Make sure doorbells don't leak out of SQ spinlock
5385                  * and reach the HCA out of order.
5386                  */
5387                 bf->offset ^= bf->buf_size;
5388         }
5389
5390         spin_unlock_irqrestore(&qp->sq.lock, flags);
5391
5392         return err;
5393 }
5394
5395 int mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
5396                       const struct ib_send_wr **bad_wr)
5397 {
5398         return _mlx5_ib_post_send(ibqp, wr, bad_wr, false);
5399 }
5400
5401 static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
5402 {
5403         sig->signature = calc_sig(sig, size);
5404 }
5405
5406 static int _mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
5407                       const struct ib_recv_wr **bad_wr, bool drain)
5408 {
5409         struct mlx5_ib_qp *qp = to_mqp(ibqp);
5410         struct mlx5_wqe_data_seg *scat;
5411         struct mlx5_rwqe_sig *sig;
5412         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
5413         struct mlx5_core_dev *mdev = dev->mdev;
5414         unsigned long flags;
5415         int err = 0;
5416         int nreq;
5417         int ind;
5418         int i;
5419
5420         if (unlikely(mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR &&
5421                      !drain)) {
5422                 *bad_wr = wr;
5423                 return -EIO;
5424         }
5425
5426         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
5427                 return mlx5_ib_gsi_post_recv(ibqp, wr, bad_wr);
5428
5429         spin_lock_irqsave(&qp->rq.lock, flags);
5430
5431         ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
5432
5433         for (nreq = 0; wr; nreq++, wr = wr->next) {
5434                 if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
5435                         err = -ENOMEM;
5436                         *bad_wr = wr;
5437                         goto out;
5438                 }
5439
5440                 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
5441                         err = -EINVAL;
5442                         *bad_wr = wr;
5443                         goto out;
5444                 }
5445
5446                 scat = mlx5_frag_buf_get_wqe(&qp->rq.fbc, ind);
5447                 if (qp->wq_sig)
5448                         scat++;
5449
5450                 for (i = 0; i < wr->num_sge; i++)
5451                         set_data_ptr_seg(scat + i, wr->sg_list + i);
5452
5453                 if (i < qp->rq.max_gs) {
5454                         scat[i].byte_count = 0;
5455                         scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
5456                         scat[i].addr       = 0;
5457                 }
5458
5459                 if (qp->wq_sig) {
5460                         sig = (struct mlx5_rwqe_sig *)scat;
5461                         set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
5462                 }
5463
5464                 qp->rq.wrid[ind] = wr->wr_id;
5465
5466                 ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
5467         }
5468
5469 out:
5470         if (likely(nreq)) {
5471                 qp->rq.head += nreq;
5472
5473                 /* Make sure that descriptors are written before
5474                  * doorbell record.
5475                  */
5476                 wmb();
5477
5478                 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
5479         }
5480
5481         spin_unlock_irqrestore(&qp->rq.lock, flags);
5482
5483         return err;
5484 }
5485
5486 int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
5487                       const struct ib_recv_wr **bad_wr)
5488 {
5489         return _mlx5_ib_post_recv(ibqp, wr, bad_wr, false);
5490 }
5491
5492 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
5493 {
5494         switch (mlx5_state) {
5495         case MLX5_QP_STATE_RST:      return IB_QPS_RESET;
5496         case MLX5_QP_STATE_INIT:     return IB_QPS_INIT;
5497         case MLX5_QP_STATE_RTR:      return IB_QPS_RTR;
5498         case MLX5_QP_STATE_RTS:      return IB_QPS_RTS;
5499         case MLX5_QP_STATE_SQ_DRAINING:
5500         case MLX5_QP_STATE_SQD:      return IB_QPS_SQD;
5501         case MLX5_QP_STATE_SQER:     return IB_QPS_SQE;
5502         case MLX5_QP_STATE_ERR:      return IB_QPS_ERR;
5503         default:                     return -1;
5504         }
5505 }
5506
5507 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
5508 {
5509         switch (mlx5_mig_state) {
5510         case MLX5_QP_PM_ARMED:          return IB_MIG_ARMED;
5511         case MLX5_QP_PM_REARM:          return IB_MIG_REARM;
5512         case MLX5_QP_PM_MIGRATED:       return IB_MIG_MIGRATED;
5513         default: return -1;
5514         }
5515 }
5516
5517 static int to_ib_qp_access_flags(int mlx5_flags)
5518 {
5519         int ib_flags = 0;
5520
5521         if (mlx5_flags & MLX5_QP_BIT_RRE)
5522                 ib_flags |= IB_ACCESS_REMOTE_READ;
5523         if (mlx5_flags & MLX5_QP_BIT_RWE)
5524                 ib_flags |= IB_ACCESS_REMOTE_WRITE;
5525         if (mlx5_flags & MLX5_QP_BIT_RAE)
5526                 ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
5527
5528         return ib_flags;
5529 }
5530
5531 static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
5532                             struct rdma_ah_attr *ah_attr,
5533                             struct mlx5_qp_path *path)
5534 {
5535
5536         memset(ah_attr, 0, sizeof(*ah_attr));
5537
5538         if (!path->port || path->port > ibdev->num_ports)
5539                 return;
5540
5541         ah_attr->type = rdma_ah_find_type(&ibdev->ib_dev, path->port);
5542
5543         rdma_ah_set_port_num(ah_attr, path->port);
5544         rdma_ah_set_sl(ah_attr, path->dci_cfi_prio_sl & 0xf);
5545
5546         rdma_ah_set_dlid(ah_attr, be16_to_cpu(path->rlid));
5547         rdma_ah_set_path_bits(ah_attr, path->grh_mlid & 0x7f);
5548         rdma_ah_set_static_rate(ah_attr,
5549                                 path->static_rate ? path->static_rate - 5 : 0);
5550         if (path->grh_mlid & (1 << 7)) {
5551                 u32 tc_fl = be32_to_cpu(path->tclass_flowlabel);
5552
5553                 rdma_ah_set_grh(ah_attr, NULL,
5554                                 tc_fl & 0xfffff,
5555                                 path->mgid_index,
5556                                 path->hop_limit,
5557                                 (tc_fl >> 20) & 0xff);
5558                 rdma_ah_set_dgid_raw(ah_attr, path->rgid);
5559         }
5560 }
5561
5562 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
5563                                         struct mlx5_ib_sq *sq,
5564                                         u8 *sq_state)
5565 {
5566         int err;
5567
5568         err = mlx5_core_query_sq_state(dev->mdev, sq->base.mqp.qpn, sq_state);
5569         if (err)
5570                 goto out;
5571         sq->state = *sq_state;
5572
5573 out:
5574         return err;
5575 }
5576
5577 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
5578                                         struct mlx5_ib_rq *rq,
5579                                         u8 *rq_state)
5580 {
5581         void *out;
5582         void *rqc;
5583         int inlen;
5584         int err;
5585
5586         inlen = MLX5_ST_SZ_BYTES(query_rq_out);
5587         out = kvzalloc(inlen, GFP_KERNEL);
5588         if (!out)
5589                 return -ENOMEM;
5590
5591         err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
5592         if (err)
5593                 goto out;
5594
5595         rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
5596         *rq_state = MLX5_GET(rqc, rqc, state);
5597         rq->state = *rq_state;
5598
5599 out:
5600         kvfree(out);
5601         return err;
5602 }
5603
5604 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
5605                                   struct mlx5_ib_qp *qp, u8 *qp_state)
5606 {
5607         static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
5608                 [MLX5_RQC_STATE_RST] = {
5609                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
5610                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
5611                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE_BAD,
5612                         [MLX5_SQ_STATE_NA]      = IB_QPS_RESET,
5613                 },
5614                 [MLX5_RQC_STATE_RDY] = {
5615                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
5616                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
5617                         [MLX5_SQC_STATE_ERR]    = IB_QPS_SQE,
5618                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE,
5619                 },
5620                 [MLX5_RQC_STATE_ERR] = {
5621                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
5622                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
5623                         [MLX5_SQC_STATE_ERR]    = IB_QPS_ERR,
5624                         [MLX5_SQ_STATE_NA]      = IB_QPS_ERR,
5625                 },
5626                 [MLX5_RQ_STATE_NA] = {
5627                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
5628                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
5629                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE,
5630                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE_BAD,
5631                 },
5632         };
5633
5634         *qp_state = sqrq_trans[rq_state][sq_state];
5635
5636         if (*qp_state == MLX5_QP_STATE_BAD) {
5637                 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
5638                      qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
5639                      qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
5640                 return -EINVAL;
5641         }
5642
5643         if (*qp_state == MLX5_QP_STATE)
5644                 *qp_state = qp->state;
5645
5646         return 0;
5647 }
5648
5649 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
5650                                      struct mlx5_ib_qp *qp,
5651                                      u8 *raw_packet_qp_state)
5652 {
5653         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
5654         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
5655         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
5656         int err;
5657         u8 sq_state = MLX5_SQ_STATE_NA;
5658         u8 rq_state = MLX5_RQ_STATE_NA;
5659
5660         if (qp->sq.wqe_cnt) {
5661                 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
5662                 if (err)
5663                         return err;
5664         }
5665
5666         if (qp->rq.wqe_cnt) {
5667                 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
5668                 if (err)
5669                         return err;
5670         }
5671
5672         return sqrq_state_to_qp_state(sq_state, rq_state, qp,
5673                                       raw_packet_qp_state);
5674 }
5675
5676 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
5677                          struct ib_qp_attr *qp_attr)
5678 {
5679         int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
5680         struct mlx5_qp_context *context;
5681         int mlx5_state;
5682         u32 *outb;
5683         int err = 0;
5684
5685         outb = kzalloc(outlen, GFP_KERNEL);
5686         if (!outb)
5687                 return -ENOMEM;
5688
5689         err = mlx5_core_qp_query(dev->mdev, &qp->trans_qp.base.mqp, outb,
5690                                  outlen);
5691         if (err)
5692                 goto out;
5693
5694         /* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
5695         context = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, outb, qpc);
5696
5697         mlx5_state = be32_to_cpu(context->flags) >> 28;
5698
5699         qp->state                    = to_ib_qp_state(mlx5_state);
5700         qp_attr->path_mtu            = context->mtu_msgmax >> 5;
5701         qp_attr->path_mig_state      =
5702                 to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
5703         qp_attr->qkey                = be32_to_cpu(context->qkey);
5704         qp_attr->rq_psn              = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
5705         qp_attr->sq_psn              = be32_to_cpu(context->next_send_psn) & 0xffffff;
5706         qp_attr->dest_qp_num         = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
5707         qp_attr->qp_access_flags     =
5708                 to_ib_qp_access_flags(be32_to_cpu(context->params2));
5709
5710         if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
5711                 to_rdma_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
5712                 to_rdma_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
5713                 qp_attr->alt_pkey_index =
5714                         be16_to_cpu(context->alt_path.pkey_index);
5715                 qp_attr->alt_port_num   =
5716                         rdma_ah_get_port_num(&qp_attr->alt_ah_attr);
5717         }
5718
5719         qp_attr->pkey_index = be16_to_cpu(context->pri_path.pkey_index);
5720         qp_attr->port_num = context->pri_path.port;
5721
5722         /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
5723         qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
5724
5725         qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
5726
5727         qp_attr->max_dest_rd_atomic =
5728                 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
5729         qp_attr->min_rnr_timer      =
5730                 (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
5731         qp_attr->timeout            = context->pri_path.ackto_lt >> 3;
5732         qp_attr->retry_cnt          = (be32_to_cpu(context->params1) >> 16) & 0x7;
5733         qp_attr->rnr_retry          = (be32_to_cpu(context->params1) >> 13) & 0x7;
5734         qp_attr->alt_timeout        = context->alt_path.ackto_lt >> 3;
5735
5736 out:
5737         kfree(outb);
5738         return err;
5739 }
5740
5741 static int mlx5_ib_dct_query_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *mqp,
5742                                 struct ib_qp_attr *qp_attr, int qp_attr_mask,
5743                                 struct ib_qp_init_attr *qp_init_attr)
5744 {
5745         struct mlx5_core_dct    *dct = &mqp->dct.mdct;
5746         u32 *out;
5747         u32 access_flags = 0;
5748         int outlen = MLX5_ST_SZ_BYTES(query_dct_out);
5749         void *dctc;
5750         int err;
5751         int supported_mask = IB_QP_STATE |
5752                              IB_QP_ACCESS_FLAGS |
5753                              IB_QP_PORT |
5754                              IB_QP_MIN_RNR_TIMER |
5755                              IB_QP_AV |
5756                              IB_QP_PATH_MTU |
5757                              IB_QP_PKEY_INDEX;
5758
5759         if (qp_attr_mask & ~supported_mask)
5760                 return -EINVAL;
5761         if (mqp->state != IB_QPS_RTR)
5762                 return -EINVAL;
5763
5764         out = kzalloc(outlen, GFP_KERNEL);
5765         if (!out)
5766                 return -ENOMEM;
5767
5768         err = mlx5_core_dct_query(dev->mdev, dct, out, outlen);
5769         if (err)
5770                 goto out;
5771
5772         dctc = MLX5_ADDR_OF(query_dct_out, out, dct_context_entry);
5773
5774         if (qp_attr_mask & IB_QP_STATE)
5775                 qp_attr->qp_state = IB_QPS_RTR;
5776
5777         if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
5778                 if (MLX5_GET(dctc, dctc, rre))
5779                         access_flags |= IB_ACCESS_REMOTE_READ;
5780                 if (MLX5_GET(dctc, dctc, rwe))
5781                         access_flags |= IB_ACCESS_REMOTE_WRITE;
5782                 if (MLX5_GET(dctc, dctc, rae))
5783                         access_flags |= IB_ACCESS_REMOTE_ATOMIC;
5784                 qp_attr->qp_access_flags = access_flags;
5785         }
5786
5787         if (qp_attr_mask & IB_QP_PORT)
5788                 qp_attr->port_num = MLX5_GET(dctc, dctc, port);
5789         if (qp_attr_mask & IB_QP_MIN_RNR_TIMER)
5790                 qp_attr->min_rnr_timer = MLX5_GET(dctc, dctc, min_rnr_nak);
5791         if (qp_attr_mask & IB_QP_AV) {
5792                 qp_attr->ah_attr.grh.traffic_class = MLX5_GET(dctc, dctc, tclass);
5793                 qp_attr->ah_attr.grh.flow_label = MLX5_GET(dctc, dctc, flow_label);
5794                 qp_attr->ah_attr.grh.sgid_index = MLX5_GET(dctc, dctc, my_addr_index);
5795                 qp_attr->ah_attr.grh.hop_limit = MLX5_GET(dctc, dctc, hop_limit);
5796         }
5797         if (qp_attr_mask & IB_QP_PATH_MTU)
5798                 qp_attr->path_mtu = MLX5_GET(dctc, dctc, mtu);
5799         if (qp_attr_mask & IB_QP_PKEY_INDEX)
5800                 qp_attr->pkey_index = MLX5_GET(dctc, dctc, pkey_index);
5801 out:
5802         kfree(out);
5803         return err;
5804 }
5805
5806 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
5807                      int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
5808 {
5809         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
5810         struct mlx5_ib_qp *qp = to_mqp(ibqp);
5811         int err = 0;
5812         u8 raw_packet_qp_state;
5813
5814         if (ibqp->rwq_ind_tbl)
5815                 return -ENOSYS;
5816
5817         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
5818                 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
5819                                             qp_init_attr);
5820
5821         /* Not all of output fields are applicable, make sure to zero them */
5822         memset(qp_init_attr, 0, sizeof(*qp_init_attr));
5823         memset(qp_attr, 0, sizeof(*qp_attr));
5824
5825         if (unlikely(qp->qp_sub_type == MLX5_IB_QPT_DCT))
5826                 return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
5827                                             qp_attr_mask, qp_init_attr);
5828
5829         mutex_lock(&qp->mutex);
5830
5831         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
5832             qp->flags & MLX5_IB_QP_UNDERLAY) {
5833                 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
5834                 if (err)
5835                         goto out;
5836                 qp->state = raw_packet_qp_state;
5837                 qp_attr->port_num = 1;
5838         } else {
5839                 err = query_qp_attr(dev, qp, qp_attr);
5840                 if (err)
5841                         goto out;
5842         }
5843
5844         qp_attr->qp_state            = qp->state;
5845         qp_attr->cur_qp_state        = qp_attr->qp_state;
5846         qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;
5847         qp_attr->cap.max_recv_sge    = qp->rq.max_gs;
5848
5849         if (!ibqp->uobject) {
5850                 qp_attr->cap.max_send_wr  = qp->sq.max_post;
5851                 qp_attr->cap.max_send_sge = qp->sq.max_gs;
5852                 qp_init_attr->qp_context = ibqp->qp_context;
5853         } else {
5854                 qp_attr->cap.max_send_wr  = 0;
5855                 qp_attr->cap.max_send_sge = 0;
5856         }
5857
5858         qp_init_attr->qp_type = ibqp->qp_type;
5859         qp_init_attr->recv_cq = ibqp->recv_cq;
5860         qp_init_attr->send_cq = ibqp->send_cq;
5861         qp_init_attr->srq = ibqp->srq;
5862         qp_attr->cap.max_inline_data = qp->max_inline_data;
5863
5864         qp_init_attr->cap            = qp_attr->cap;
5865
5866         qp_init_attr->create_flags = 0;
5867         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
5868                 qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
5869
5870         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
5871                 qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
5872         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
5873                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
5874         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
5875                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
5876         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
5877                 qp_init_attr->create_flags |= MLX5_IB_QP_CREATE_SQPN_QP1;
5878
5879         qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
5880                 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
5881
5882 out:
5883         mutex_unlock(&qp->mutex);
5884         return err;
5885 }
5886
5887 struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
5888                                    struct ib_udata *udata)
5889 {
5890         struct mlx5_ib_dev *dev = to_mdev(ibdev);
5891         struct mlx5_ib_xrcd *xrcd;
5892         int err;
5893
5894         if (!MLX5_CAP_GEN(dev->mdev, xrc))
5895                 return ERR_PTR(-ENOSYS);
5896
5897         xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
5898         if (!xrcd)
5899                 return ERR_PTR(-ENOMEM);
5900
5901         err = mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
5902         if (err) {
5903                 kfree(xrcd);
5904                 return ERR_PTR(-ENOMEM);
5905         }
5906
5907         return &xrcd->ibxrcd;
5908 }
5909
5910 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
5911 {
5912         struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
5913         u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
5914         int err;
5915
5916         err = mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
5917         if (err)
5918                 mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
5919
5920         kfree(xrcd);
5921         return 0;
5922 }
5923
5924 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
5925 {
5926         struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
5927         struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
5928         struct ib_event event;
5929
5930         if (rwq->ibwq.event_handler) {
5931                 event.device     = rwq->ibwq.device;
5932                 event.element.wq = &rwq->ibwq;
5933                 switch (type) {
5934                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
5935                         event.event = IB_EVENT_WQ_FATAL;
5936                         break;
5937                 default:
5938                         mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
5939                         return;
5940                 }
5941
5942                 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
5943         }
5944 }
5945
5946 static int set_delay_drop(struct mlx5_ib_dev *dev)
5947 {
5948         int err = 0;
5949
5950         mutex_lock(&dev->delay_drop.lock);
5951         if (dev->delay_drop.activate)
5952                 goto out;
5953
5954         err = mlx5_core_set_delay_drop(dev->mdev, dev->delay_drop.timeout);
5955         if (err)
5956                 goto out;
5957
5958         dev->delay_drop.activate = true;
5959 out:
5960         mutex_unlock(&dev->delay_drop.lock);
5961
5962         if (!err)
5963                 atomic_inc(&dev->delay_drop.rqs_cnt);
5964         return err;
5965 }
5966
5967 static int  create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
5968                       struct ib_wq_init_attr *init_attr)
5969 {
5970         struct mlx5_ib_dev *dev;
5971         int has_net_offloads;
5972         __be64 *rq_pas0;
5973         void *in;
5974         void *rqc;
5975         void *wq;
5976         int inlen;
5977         int err;
5978
5979         dev = to_mdev(pd->device);
5980
5981         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
5982         in = kvzalloc(inlen, GFP_KERNEL);
5983         if (!in)
5984                 return -ENOMEM;
5985
5986         MLX5_SET(create_rq_in, in, uid, to_mpd(pd)->uid);
5987         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
5988         MLX5_SET(rqc,  rqc, mem_rq_type,
5989                  MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
5990         MLX5_SET(rqc, rqc, user_index, rwq->user_index);
5991         MLX5_SET(rqc,  rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
5992         MLX5_SET(rqc,  rqc, state, MLX5_RQC_STATE_RST);
5993         MLX5_SET(rqc,  rqc, flush_in_error_en, 1);
5994         wq = MLX5_ADDR_OF(rqc, rqc, wq);
5995         MLX5_SET(wq, wq, wq_type,
5996                  rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ ?
5997                  MLX5_WQ_TYPE_CYCLIC_STRIDING_RQ : MLX5_WQ_TYPE_CYCLIC);
5998         if (init_attr->create_flags & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
5999                 if (!MLX5_CAP_GEN(dev->mdev, end_pad)) {
6000                         mlx5_ib_dbg(dev, "Scatter end padding is not supported\n");
6001                         err = -EOPNOTSUPP;
6002                         goto out;
6003                 } else {
6004                         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
6005                 }
6006         }
6007         MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
6008         if (rwq->create_flags & MLX5_IB_WQ_FLAGS_STRIDING_RQ) {
6009                 /*
6010                  * In Firmware number of strides in each WQE is:
6011                  *   "512 * 2^single_wqe_log_num_of_strides"
6012                  * Values 3 to 8 are accepted as 10 to 15, 9 to 18 are
6013                  * accepted as 0 to 9
6014                  */
6015                 static const u8 fw_map[] = { 10, 11, 12, 13, 14, 15, 0, 1,
6016                                              2,  3,  4,  5,  6,  7,  8, 9 };
6017                 MLX5_SET(wq, wq, two_byte_shift_en, rwq->two_byte_shift_en);
6018                 MLX5_SET(wq, wq, log_wqe_stride_size,
6019                          rwq->single_stride_log_num_of_bytes -
6020                          MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES);
6021                 MLX5_SET(wq, wq, log_wqe_num_of_strides,
6022                          fw_map[rwq->log_num_strides -
6023                                 MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES]);
6024         }
6025         MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
6026         MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
6027         MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
6028         MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
6029         MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
6030         MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
6031         has_net_offloads = MLX5_CAP_GEN(dev->mdev, eth_net_offloads);
6032         if (init_attr->create_flags & IB_WQ_FLAGS_CVLAN_STRIPPING) {
6033                 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
6034                         mlx5_ib_dbg(dev, "VLAN offloads are not supported\n");
6035                         err = -EOPNOTSUPP;
6036                         goto out;
6037                 }
6038         } else {
6039                 MLX5_SET(rqc, rqc, vsd, 1);
6040         }
6041         if (init_attr->create_flags & IB_WQ_FLAGS_SCATTER_FCS) {
6042                 if (!(has_net_offloads && MLX5_CAP_ETH(dev->mdev, scatter_fcs))) {
6043                         mlx5_ib_dbg(dev, "Scatter FCS is not supported\n");
6044                         err = -EOPNOTSUPP;
6045                         goto out;
6046                 }
6047                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
6048         }
6049         if (init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
6050                 if (!(dev->ib_dev.attrs.raw_packet_caps &
6051                       IB_RAW_PACKET_CAP_DELAY_DROP)) {
6052                         mlx5_ib_dbg(dev, "Delay drop is not supported\n");
6053                         err = -EOPNOTSUPP;
6054                         goto out;
6055                 }
6056                 MLX5_SET(rqc, rqc, delay_drop_en, 1);
6057         }
6058         rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
6059         mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
6060         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);
6061         if (!err && init_attr->create_flags & IB_WQ_FLAGS_DELAY_DROP) {
6062                 err = set_delay_drop(dev);
6063                 if (err) {
6064                         mlx5_ib_warn(dev, "Failed to enable delay drop err=%d\n",
6065                                      err);
6066                         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
6067                 } else {
6068                         rwq->create_flags |= MLX5_IB_WQ_FLAGS_DELAY_DROP;
6069                 }
6070         }
6071 out:
6072         kvfree(in);
6073         return err;
6074 }
6075
6076 static int set_user_rq_size(struct mlx5_ib_dev *dev,
6077                             struct ib_wq_init_attr *wq_init_attr,
6078                             struct mlx5_ib_create_wq *ucmd,
6079                             struct mlx5_ib_rwq *rwq)
6080 {
6081         /* Sanity check RQ size before proceeding */
6082         if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
6083                 return -EINVAL;
6084
6085         if (!ucmd->rq_wqe_count)
6086                 return -EINVAL;
6087
6088         rwq->wqe_count = ucmd->rq_wqe_count;
6089         rwq->wqe_shift = ucmd->rq_wqe_shift;
6090         if (check_shl_overflow(rwq->wqe_count, rwq->wqe_shift, &rwq->buf_size))
6091                 return -EINVAL;
6092
6093         rwq->log_rq_stride = rwq->wqe_shift;
6094         rwq->log_rq_size = ilog2(rwq->wqe_count);
6095         return 0;
6096 }
6097
6098 static bool log_of_strides_valid(struct mlx5_ib_dev *dev, u32 log_num_strides)
6099 {
6100         if ((log_num_strides > MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES) ||
6101             (log_num_strides < MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES))
6102                 return false;
6103
6104         if (!MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) &&
6105             (log_num_strides < MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES))
6106                 return false;
6107
6108         return true;
6109 }
6110
6111 static int prepare_user_rq(struct ib_pd *pd,
6112                            struct ib_wq_init_attr *init_attr,
6113                            struct ib_udata *udata,
6114                            struct mlx5_ib_rwq *rwq)
6115 {
6116         struct mlx5_ib_dev *dev = to_mdev(pd->device);
6117         struct mlx5_ib_create_wq ucmd = {};
6118         int err;
6119         size_t required_cmd_sz;
6120
6121         required_cmd_sz = offsetof(typeof(ucmd), single_stride_log_num_of_bytes)
6122                 + sizeof(ucmd.single_stride_log_num_of_bytes);
6123         if (udata->inlen < required_cmd_sz) {
6124                 mlx5_ib_dbg(dev, "invalid inlen\n");
6125                 return -EINVAL;
6126         }
6127
6128         if (udata->inlen > sizeof(ucmd) &&
6129             !ib_is_udata_cleared(udata, sizeof(ucmd),
6130                                  udata->inlen - sizeof(ucmd))) {
6131                 mlx5_ib_dbg(dev, "inlen is not supported\n");
6132                 return -EOPNOTSUPP;
6133         }
6134
6135         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
6136                 mlx5_ib_dbg(dev, "copy failed\n");
6137                 return -EFAULT;
6138         }
6139
6140         if (ucmd.comp_mask & (~MLX5_IB_CREATE_WQ_STRIDING_RQ)) {
6141                 mlx5_ib_dbg(dev, "invalid comp mask\n");
6142                 return -EOPNOTSUPP;
6143         } else if (ucmd.comp_mask & MLX5_IB_CREATE_WQ_STRIDING_RQ) {
6144                 if (!MLX5_CAP_GEN(dev->mdev, striding_rq)) {
6145                         mlx5_ib_dbg(dev, "Striding RQ is not supported\n");
6146                         return -EOPNOTSUPP;
6147                 }
6148                 if ((ucmd.single_stride_log_num_of_bytes <
6149                     MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES) ||
6150                     (ucmd.single_stride_log_num_of_bytes >
6151                      MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES)) {
6152                         mlx5_ib_dbg(dev, "Invalid log stride size (%u. Range is %u - %u)\n",
6153                                     ucmd.single_stride_log_num_of_bytes,
6154                                     MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES,
6155                                     MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES);
6156                         return -EINVAL;
6157                 }
6158                 if (!log_of_strides_valid(dev,
6159                                           ucmd.single_wqe_log_num_of_strides)) {
6160                         mlx5_ib_dbg(
6161                                 dev,
6162                                 "Invalid log num strides (%u. Range is %u - %u)\n",
6163                                 ucmd.single_wqe_log_num_of_strides,
6164                                 MLX5_CAP_GEN(dev->mdev, ext_stride_num_range) ?
6165                                         MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES :
6166                                         MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES,
6167                                 MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES);
6168                         return -EINVAL;
6169                 }
6170                 rwq->single_stride_log_num_of_bytes =
6171                         ucmd.single_stride_log_num_of_bytes;
6172                 rwq->log_num_strides = ucmd.single_wqe_log_num_of_strides;
6173                 rwq->two_byte_shift_en = !!ucmd.two_byte_shift_en;
6174                 rwq->create_flags |= MLX5_IB_WQ_FLAGS_STRIDING_RQ;
6175         }
6176
6177         err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
6178         if (err) {
6179                 mlx5_ib_dbg(dev, "err %d\n", err);
6180                 return err;
6181         }
6182
6183         err = create_user_rq(dev, pd, udata, rwq, &ucmd);
6184         if (err) {
6185                 mlx5_ib_dbg(dev, "err %d\n", err);
6186                 return err;
6187         }
6188
6189         rwq->user_index = ucmd.user_index;
6190         return 0;
6191 }
6192
6193 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
6194                                 struct ib_wq_init_attr *init_attr,
6195                                 struct ib_udata *udata)
6196 {
6197         struct mlx5_ib_dev *dev;
6198         struct mlx5_ib_rwq *rwq;
6199         struct mlx5_ib_create_wq_resp resp = {};
6200         size_t min_resp_len;
6201         int err;
6202
6203         if (!udata)
6204                 return ERR_PTR(-ENOSYS);
6205
6206         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
6207         if (udata->outlen && udata->outlen < min_resp_len)
6208                 return ERR_PTR(-EINVAL);
6209
6210         dev = to_mdev(pd->device);
6211         switch (init_attr->wq_type) {
6212         case IB_WQT_RQ:
6213                 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
6214                 if (!rwq)
6215                         return ERR_PTR(-ENOMEM);
6216                 err = prepare_user_rq(pd, init_attr, udata, rwq);
6217                 if (err)
6218                         goto err;
6219                 err = create_rq(rwq, pd, init_attr);
6220                 if (err)
6221                         goto err_user_rq;
6222                 break;
6223         default:
6224                 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
6225                             init_attr->wq_type);
6226                 return ERR_PTR(-EINVAL);
6227         }
6228
6229         rwq->ibwq.wq_num = rwq->core_qp.qpn;
6230         rwq->ibwq.state = IB_WQS_RESET;
6231         if (udata->outlen) {
6232                 resp.response_length = offsetof(typeof(resp), response_length) +
6233                                 sizeof(resp.response_length);
6234                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
6235                 if (err)
6236                         goto err_copy;
6237         }
6238
6239         rwq->core_qp.event = mlx5_ib_wq_event;
6240         rwq->ibwq.event_handler = init_attr->event_handler;
6241         return &rwq->ibwq;
6242
6243 err_copy:
6244         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
6245 err_user_rq:
6246         destroy_user_rq(dev, pd, rwq, udata);
6247 err:
6248         kfree(rwq);
6249         return ERR_PTR(err);
6250 }
6251
6252 void mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata)
6253 {
6254         struct mlx5_ib_dev *dev = to_mdev(wq->device);
6255         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
6256
6257         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
6258         destroy_user_rq(dev, wq->pd, rwq, udata);
6259         kfree(rwq);
6260 }
6261
6262 struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
6263                                                       struct ib_rwq_ind_table_init_attr *init_attr,
6264                                                       struct ib_udata *udata)
6265 {
6266         struct mlx5_ib_dev *dev = to_mdev(device);
6267         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
6268         int sz = 1 << init_attr->log_ind_tbl_size;
6269         struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
6270         size_t min_resp_len;
6271         int inlen;
6272         int err;
6273         int i;
6274         u32 *in;
6275         void *rqtc;
6276
6277         if (udata->inlen > 0 &&
6278             !ib_is_udata_cleared(udata, 0,
6279                                  udata->inlen))
6280                 return ERR_PTR(-EOPNOTSUPP);
6281
6282         if (init_attr->log_ind_tbl_size >
6283             MLX5_CAP_GEN(dev->mdev, log_max_rqt_size)) {
6284                 mlx5_ib_dbg(dev, "log_ind_tbl_size = %d is bigger than supported = %d\n",
6285                             init_attr->log_ind_tbl_size,
6286                             MLX5_CAP_GEN(dev->mdev, log_max_rqt_size));
6287                 return ERR_PTR(-EINVAL);
6288         }
6289
6290         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
6291         if (udata->outlen && udata->outlen < min_resp_len)
6292                 return ERR_PTR(-EINVAL);
6293
6294         rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
6295         if (!rwq_ind_tbl)
6296                 return ERR_PTR(-ENOMEM);
6297
6298         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
6299         in = kvzalloc(inlen, GFP_KERNEL);
6300         if (!in) {
6301                 err = -ENOMEM;
6302                 goto err;
6303         }
6304
6305         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
6306
6307         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
6308         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
6309
6310         for (i = 0; i < sz; i++)
6311                 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
6312
6313         rwq_ind_tbl->uid = to_mpd(init_attr->ind_tbl[0]->pd)->uid;
6314         MLX5_SET(create_rqt_in, in, uid, rwq_ind_tbl->uid);
6315
6316         err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
6317         kvfree(in);
6318
6319         if (err)
6320                 goto err;
6321
6322         rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
6323         if (udata->outlen) {
6324                 resp.response_length = offsetof(typeof(resp), response_length) +
6325                                         sizeof(resp.response_length);
6326                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
6327                 if (err)
6328                         goto err_copy;
6329         }
6330
6331         return &rwq_ind_tbl->ib_rwq_ind_tbl;
6332
6333 err_copy:
6334         mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
6335 err:
6336         kfree(rwq_ind_tbl);
6337         return ERR_PTR(err);
6338 }
6339
6340 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
6341 {
6342         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
6343         struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
6344
6345         mlx5_cmd_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn, rwq_ind_tbl->uid);
6346
6347         kfree(rwq_ind_tbl);
6348         return 0;
6349 }
6350
6351 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
6352                       u32 wq_attr_mask, struct ib_udata *udata)
6353 {
6354         struct mlx5_ib_dev *dev = to_mdev(wq->device);
6355         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
6356         struct mlx5_ib_modify_wq ucmd = {};
6357         size_t required_cmd_sz;
6358         int curr_wq_state;
6359         int wq_state;
6360         int inlen;
6361         int err;
6362         void *rqc;
6363         void *in;
6364
6365         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
6366         if (udata->inlen < required_cmd_sz)
6367                 return -EINVAL;
6368
6369         if (udata->inlen > sizeof(ucmd) &&
6370             !ib_is_udata_cleared(udata, sizeof(ucmd),
6371                                  udata->inlen - sizeof(ucmd)))
6372                 return -EOPNOTSUPP;
6373
6374         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
6375                 return -EFAULT;
6376
6377         if (ucmd.comp_mask || ucmd.reserved)
6378                 return -EOPNOTSUPP;
6379
6380         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
6381         in = kvzalloc(inlen, GFP_KERNEL);
6382         if (!in)
6383                 return -ENOMEM;
6384
6385         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
6386
6387         curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
6388                 wq_attr->curr_wq_state : wq->state;
6389         wq_state = (wq_attr_mask & IB_WQ_STATE) ?
6390                 wq_attr->wq_state : curr_wq_state;
6391         if (curr_wq_state == IB_WQS_ERR)
6392                 curr_wq_state = MLX5_RQC_STATE_ERR;
6393         if (wq_state == IB_WQS_ERR)
6394                 wq_state = MLX5_RQC_STATE_ERR;
6395         MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
6396         MLX5_SET(modify_rq_in, in, uid, to_mpd(wq->pd)->uid);
6397         MLX5_SET(rqc, rqc, state, wq_state);
6398
6399         if (wq_attr_mask & IB_WQ_FLAGS) {
6400                 if (wq_attr->flags_mask & IB_WQ_FLAGS_CVLAN_STRIPPING) {
6401                         if (!(MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
6402                               MLX5_CAP_ETH(dev->mdev, vlan_cap))) {
6403                                 mlx5_ib_dbg(dev, "VLAN offloads are not "
6404                                             "supported\n");
6405                                 err = -EOPNOTSUPP;
6406                                 goto out;
6407                         }
6408                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
6409                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
6410                         MLX5_SET(rqc, rqc, vsd,
6411                                  (wq_attr->flags & IB_WQ_FLAGS_CVLAN_STRIPPING) ? 0 : 1);
6412                 }
6413
6414                 if (wq_attr->flags_mask & IB_WQ_FLAGS_PCI_WRITE_END_PADDING) {
6415                         mlx5_ib_dbg(dev, "Modifying scatter end padding is not supported\n");
6416                         err = -EOPNOTSUPP;
6417                         goto out;
6418                 }
6419         }
6420
6421         if (curr_wq_state == IB_WQS_RESET && wq_state == IB_WQS_RDY) {
6422                 u16 set_id;
6423
6424                 set_id = mlx5_ib_get_counters_id(dev, 0);
6425                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
6426                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
6427                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_RQ_COUNTER_SET_ID);
6428                         MLX5_SET(rqc, rqc, counter_set_id, set_id);
6429                 } else
6430                         dev_info_once(
6431                                 &dev->ib_dev.dev,
6432                                 "Receive WQ counters are not supported on current FW\n");
6433         }
6434
6435         err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in, inlen);
6436         if (!err)
6437                 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
6438
6439 out:
6440         kvfree(in);
6441         return err;
6442 }
6443
6444 struct mlx5_ib_drain_cqe {
6445         struct ib_cqe cqe;
6446         struct completion done;
6447 };
6448
6449 static void mlx5_ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc)
6450 {
6451         struct mlx5_ib_drain_cqe *cqe = container_of(wc->wr_cqe,
6452                                                      struct mlx5_ib_drain_cqe,
6453                                                      cqe);
6454
6455         complete(&cqe->done);
6456 }
6457
6458 /* This function returns only once the drained WR was completed */
6459 static void handle_drain_completion(struct ib_cq *cq,
6460                                     struct mlx5_ib_drain_cqe *sdrain,
6461                                     struct mlx5_ib_dev *dev)
6462 {
6463         struct mlx5_core_dev *mdev = dev->mdev;
6464
6465         if (cq->poll_ctx == IB_POLL_DIRECT) {
6466                 while (wait_for_completion_timeout(&sdrain->done, HZ / 10) <= 0)
6467                         ib_process_cq_direct(cq, -1);
6468                 return;
6469         }
6470
6471         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
6472                 struct mlx5_ib_cq *mcq = to_mcq(cq);
6473                 bool triggered = false;
6474                 unsigned long flags;
6475
6476                 spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
6477                 /* Make sure that the CQ handler won't run if wasn't run yet */
6478                 if (!mcq->mcq.reset_notify_added)
6479                         mcq->mcq.reset_notify_added = 1;
6480                 else
6481                         triggered = true;
6482                 spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
6483
6484                 if (triggered) {
6485                         /* Wait for any scheduled/running task to be ended */
6486                         switch (cq->poll_ctx) {
6487                         case IB_POLL_SOFTIRQ:
6488                                 irq_poll_disable(&cq->iop);
6489                                 irq_poll_enable(&cq->iop);
6490                                 break;
6491                         case IB_POLL_WORKQUEUE:
6492                                 cancel_work_sync(&cq->work);
6493                                 break;
6494                         default:
6495                                 WARN_ON_ONCE(1);
6496                         }
6497                 }
6498
6499                 /* Run the CQ handler - this makes sure that the drain WR will
6500                  * be processed if wasn't processed yet.
6501                  */
6502                 mcq->mcq.comp(&mcq->mcq, NULL);
6503         }
6504
6505         wait_for_completion(&sdrain->done);
6506 }
6507
6508 void mlx5_ib_drain_sq(struct ib_qp *qp)
6509 {
6510         struct ib_cq *cq = qp->send_cq;
6511         struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
6512         struct mlx5_ib_drain_cqe sdrain;
6513         const struct ib_send_wr *bad_swr;
6514         struct ib_rdma_wr swr = {
6515                 .wr = {
6516                         .next = NULL,
6517                         { .wr_cqe       = &sdrain.cqe, },
6518                         .opcode = IB_WR_RDMA_WRITE,
6519                 },
6520         };
6521         int ret;
6522         struct mlx5_ib_dev *dev = to_mdev(qp->device);
6523         struct mlx5_core_dev *mdev = dev->mdev;
6524
6525         ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
6526         if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
6527                 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
6528                 return;
6529         }
6530
6531         sdrain.cqe.done = mlx5_ib_drain_qp_done;
6532         init_completion(&sdrain.done);
6533
6534         ret = _mlx5_ib_post_send(qp, &swr.wr, &bad_swr, true);
6535         if (ret) {
6536                 WARN_ONCE(ret, "failed to drain send queue: %d\n", ret);
6537                 return;
6538         }
6539
6540         handle_drain_completion(cq, &sdrain, dev);
6541 }
6542
6543 void mlx5_ib_drain_rq(struct ib_qp *qp)
6544 {
6545         struct ib_cq *cq = qp->recv_cq;
6546         struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR };
6547         struct mlx5_ib_drain_cqe rdrain;
6548         struct ib_recv_wr rwr = {};
6549         const struct ib_recv_wr *bad_rwr;
6550         int ret;
6551         struct mlx5_ib_dev *dev = to_mdev(qp->device);
6552         struct mlx5_core_dev *mdev = dev->mdev;
6553
6554         ret = ib_modify_qp(qp, &attr, IB_QP_STATE);
6555         if (ret && mdev->state != MLX5_DEVICE_STATE_INTERNAL_ERROR) {
6556                 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
6557                 return;
6558         }
6559
6560         rwr.wr_cqe = &rdrain.cqe;
6561         rdrain.cqe.done = mlx5_ib_drain_qp_done;
6562         init_completion(&rdrain.done);
6563
6564         ret = _mlx5_ib_post_recv(qp, &rwr, &bad_rwr, true);
6565         if (ret) {
6566                 WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret);
6567                 return;
6568         }
6569
6570         handle_drain_completion(cq, &rdrain, dev);
6571 }
6572
6573 /**
6574  * Bind a qp to a counter. If @counter is NULL then bind the qp to
6575  * the default counter
6576  */
6577 int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter)
6578 {
6579         struct mlx5_ib_qp *mqp = to_mqp(qp);
6580         int err = 0;
6581
6582         mutex_lock(&mqp->mutex);
6583         if (mqp->state == IB_QPS_RESET) {
6584                 qp->counter = counter;
6585                 goto out;
6586         }
6587
6588         if (mqp->state == IB_QPS_RTS) {
6589                 err = __mlx5_ib_qp_set_counter(qp, counter);
6590                 if (!err)
6591                         qp->counter = counter;
6592
6593                 goto out;
6594         }
6595
6596         mqp->counter_pending = 1;
6597         qp->counter = counter;
6598
6599 out:
6600         mutex_unlock(&mqp->mutex);
6601         return err;
6602 }