drivers/net/ethernet/mellanox/mlx5/core/en_main.c

   1 /*
   2  * Copyright (c) 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/mlx5/flow_table.h>
  34 #include "en.h"
  35
  36 struct mlx5e_rq_param {
  37         u32                        rqc[MLX5_ST_SZ_DW(rqc)];
  38         struct mlx5_wq_param       wq;
  39 };
  40
  41 struct mlx5e_sq_param {
  42         u32                        sqc[MLX5_ST_SZ_DW(sqc)];
  43         struct mlx5_wq_param       wq;
  44         u16                        max_inline;
  45 };
  46
  47 struct mlx5e_cq_param {
  48         u32                        cqc[MLX5_ST_SZ_DW(cqc)];
  49         struct mlx5_wq_param       wq;
  50         u16                        eq_ix;
  51 };
  52
  53 struct mlx5e_channel_param {
  54         struct mlx5e_rq_param      rq;
  55         struct mlx5e_sq_param      sq;
  56         struct mlx5e_cq_param      rx_cq;
  57         struct mlx5e_cq_param      tx_cq;
  58 };
  59
  60 static void mlx5e_update_carrier(struct mlx5e_priv *priv)
  61 {
  62         struct mlx5_core_dev *mdev = priv->mdev;
  63         u8 port_state;
  64
  65         port_state = mlx5_query_vport_state(mdev,
  66                 MLX5_QUERY_VPORT_STATE_IN_OP_MOD_VNIC_VPORT);
  67
  68         if (port_state == VPORT_STATE_UP)
  69                 netif_carrier_on(priv->netdev);
  70         else
  71                 netif_carrier_off(priv->netdev);
  72 }
  73
  74 static void mlx5e_update_carrier_work(struct work_struct *work)
  75 {
  76         struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
  77                                                update_carrier_work);
  78
  79         mutex_lock(&priv->state_lock);
  80         if (test_bit(MLX5E_STATE_OPENED, &priv->state))
  81                 mlx5e_update_carrier(priv);
  82         mutex_unlock(&priv->state_lock);
  83 }
  84
  85 void mlx5e_update_stats(struct mlx5e_priv *priv)
  86 {
  87         struct mlx5_core_dev *mdev = priv->mdev;
  88         struct mlx5e_vport_stats *s = &priv->stats.vport;
  89         struct mlx5e_rq_stats *rq_stats;
  90         struct mlx5e_sq_stats *sq_stats;
  91         u32 in[MLX5_ST_SZ_DW(query_vport_counter_in)];
  92         u32 *out;
  93         int outlen = MLX5_ST_SZ_BYTES(query_vport_counter_out);
  94         u64 tx_offload_none;
  95         int i, j;
  96
  97         out = mlx5_vzalloc(outlen);
  98         if (!out)
  99                 return;
 100
 101         /* Collect firts the SW counters and then HW for consistency */
 102         s->tso_packets          = 0;
 103         s->tso_bytes            = 0;
 104         s->tx_queue_stopped     = 0;
 105         s->tx_queue_wake        = 0;
 106         s->tx_queue_dropped     = 0;
 107         tx_offload_none         = 0;
 108         s->lro_packets          = 0;
 109         s->lro_bytes            = 0;
 110         s->rx_csum_none         = 0;
 111         s->rx_wqe_err           = 0;
 112         for (i = 0; i < priv->params.num_channels; i++) {
 113                 rq_stats = &priv->channel[i]->rq.stats;
 114
 115                 s->lro_packets  += rq_stats->lro_packets;
 116                 s->lro_bytes    += rq_stats->lro_bytes;
 117                 s->rx_csum_none += rq_stats->csum_none;
 118                 s->rx_wqe_err   += rq_stats->wqe_err;
 119
 120                 for (j = 0; j < priv->params.num_tc; j++) {
 121                         sq_stats = &priv->channel[i]->sq[j].stats;
 122
 123                         s->tso_packets          += sq_stats->tso_packets;
 124                         s->tso_bytes            += sq_stats->tso_bytes;
 125                         s->tx_queue_stopped     += sq_stats->stopped;
 126                         s->tx_queue_wake        += sq_stats->wake;
 127                         s->tx_queue_dropped     += sq_stats->dropped;
 128                         tx_offload_none         += sq_stats->csum_offload_none;
 129                 }
 130         }
 131
 132         /* HW counters */
 133         memset(in, 0, sizeof(in));
 134
 135         MLX5_SET(query_vport_counter_in, in, opcode,
 136                  MLX5_CMD_OP_QUERY_VPORT_COUNTER);
 137         MLX5_SET(query_vport_counter_in, in, op_mod, 0);
 138         MLX5_SET(query_vport_counter_in, in, other_vport, 0);
 139
 140         memset(out, 0, outlen);
 141
 142         if (mlx5_cmd_exec(mdev, in, sizeof(in), out, outlen))
 143                 goto free_out;
 144
 145 #define MLX5_GET_CTR(p, x) \
 146         MLX5_GET64(query_vport_counter_out, p, x)
 147
 148         s->rx_error_packets     =
 149                 MLX5_GET_CTR(out, received_errors.packets);
 150         s->rx_error_bytes       =
 151                 MLX5_GET_CTR(out, received_errors.octets);
 152         s->tx_error_packets     =
 153                 MLX5_GET_CTR(out, transmit_errors.packets);
 154         s->tx_error_bytes       =
 155                 MLX5_GET_CTR(out, transmit_errors.octets);
 156
 157         s->rx_unicast_packets   =
 158                 MLX5_GET_CTR(out, received_eth_unicast.packets);
 159         s->rx_unicast_bytes     =
 160                 MLX5_GET_CTR(out, received_eth_unicast.octets);
 161         s->tx_unicast_packets   =
 162                 MLX5_GET_CTR(out, transmitted_eth_unicast.packets);
 163         s->tx_unicast_bytes     =
 164                 MLX5_GET_CTR(out, transmitted_eth_unicast.octets);
 165
 166         s->rx_multicast_packets =
 167                 MLX5_GET_CTR(out, received_eth_multicast.packets);
 168         s->rx_multicast_bytes   =
 169                 MLX5_GET_CTR(out, received_eth_multicast.octets);
 170         s->tx_multicast_packets =
 171                 MLX5_GET_CTR(out, transmitted_eth_multicast.packets);
 172         s->tx_multicast_bytes   =
 173                 MLX5_GET_CTR(out, transmitted_eth_multicast.octets);
 174
 175         s->rx_broadcast_packets =
 176                 MLX5_GET_CTR(out, received_eth_broadcast.packets);
 177         s->rx_broadcast_bytes   =
 178                 MLX5_GET_CTR(out, received_eth_broadcast.octets);
 179         s->tx_broadcast_packets =
 180                 MLX5_GET_CTR(out, transmitted_eth_broadcast.packets);
 181         s->tx_broadcast_bytes   =
 182                 MLX5_GET_CTR(out, transmitted_eth_broadcast.octets);
 183
 184         s->rx_packets =
 185                 s->rx_unicast_packets +
 186                 s->rx_multicast_packets +
 187                 s->rx_broadcast_packets;
 188         s->rx_bytes =
 189                 s->rx_unicast_bytes +
 190                 s->rx_multicast_bytes +
 191                 s->rx_broadcast_bytes;
 192         s->tx_packets =
 193                 s->tx_unicast_packets +
 194                 s->tx_multicast_packets +
 195                 s->tx_broadcast_packets;
 196         s->tx_bytes =
 197                 s->tx_unicast_bytes +
 198                 s->tx_multicast_bytes +
 199                 s->tx_broadcast_bytes;
 200
 201         /* Update calculated offload counters */
 202         s->tx_csum_offload = s->tx_packets - tx_offload_none;
 203         s->rx_csum_good    = s->rx_packets - s->rx_csum_none;
 204
 205 free_out:
 206         kvfree(out);
 207 }
 208
 209 static void mlx5e_update_stats_work(struct work_struct *work)
 210 {
 211         struct delayed_work *dwork = to_delayed_work(work);
 212         struct mlx5e_priv *priv = container_of(dwork, struct mlx5e_priv,
 213                                                update_stats_work);
 214         mutex_lock(&priv->state_lock);
 215         if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {
 216                 mlx5e_update_stats(priv);
 217                 schedule_delayed_work(dwork,
 218                                       msecs_to_jiffies(
 219                                               MLX5E_UPDATE_STATS_INTERVAL));
 220         }
 221         mutex_unlock(&priv->state_lock);
 222 }
 223
 224 static void __mlx5e_async_event(struct mlx5e_priv *priv,
 225                                 enum mlx5_dev_event event)
 226 {
 227         switch (event) {
 228         case MLX5_DEV_EVENT_PORT_UP:
 229         case MLX5_DEV_EVENT_PORT_DOWN:
 230                 schedule_work(&priv->update_carrier_work);
 231                 break;
 232
 233         default:
 234                 break;
 235         }
 236 }
 237
 238 static void mlx5e_async_event(struct mlx5_core_dev *mdev, void *vpriv,
 239                               enum mlx5_dev_event event, unsigned long param)
 240 {
 241         struct mlx5e_priv *priv = vpriv;
 242
 243         spin_lock(&priv->async_events_spinlock);
 244         if (test_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state))
 245                 __mlx5e_async_event(priv, event);
 246         spin_unlock(&priv->async_events_spinlock);
 247 }
 248
 249 static void mlx5e_enable_async_events(struct mlx5e_priv *priv)
 250 {
 251         set_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state);
 252 }
 253
 254 static void mlx5e_disable_async_events(struct mlx5e_priv *priv)
 255 {
 256         spin_lock_irq(&priv->async_events_spinlock);
 257         clear_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state);
 258         spin_unlock_irq(&priv->async_events_spinlock);
 259 }
 260
 261 #define MLX5E_HW2SW_MTU(hwmtu) (hwmtu - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))
 262 #define MLX5E_SW2HW_MTU(swmtu) (swmtu + (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))
 263
 264 static int mlx5e_create_rq(struct mlx5e_channel *c,
 265                            struct mlx5e_rq_param *param,
 266                            struct mlx5e_rq *rq)
 267 {
 268         struct mlx5e_priv *priv = c->priv;
 269         struct mlx5_core_dev *mdev = priv->mdev;
 270         void *rqc = param->rqc;
 271         void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
 272         int wq_sz;
 273         int err;
 274         int i;
 275
 276         param->wq.db_numa_node = cpu_to_node(c->cpu);
 277
 278         err = mlx5_wq_ll_create(mdev, &param->wq, rqc_wq, &rq->wq,
 279                                 &rq->wq_ctrl);
 280         if (err)
 281                 return err;
 282
 283         rq->wq.db = &rq->wq.db[MLX5_RCV_DBR];
 284
 285         wq_sz = mlx5_wq_ll_get_size(&rq->wq);
 286         rq->skb = kzalloc_node(wq_sz * sizeof(*rq->skb), GFP_KERNEL,
 287                                cpu_to_node(c->cpu));
 288         if (!rq->skb) {
 289                 err = -ENOMEM;
 290                 goto err_rq_wq_destroy;
 291         }
 292
 293         rq->wqe_sz = (priv->params.lro_en) ? priv->params.lro_wqe_sz :
 294                                              MLX5E_SW2HW_MTU(priv->netdev->mtu);
 295         rq->wqe_sz = SKB_DATA_ALIGN(rq->wqe_sz + MLX5E_NET_IP_ALIGN);
 296
 297         for (i = 0; i < wq_sz; i++) {
 298                 struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(&rq->wq, i);
 299                 u32 byte_count = rq->wqe_sz - MLX5E_NET_IP_ALIGN;
 300
 301                 wqe->data.lkey       = c->mkey_be;
 302                 wqe->data.byte_count =
 303                         cpu_to_be32(byte_count | MLX5_HW_START_PADDING);
 304         }
 305
 306         rq->pdev    = c->pdev;
 307         rq->netdev  = c->netdev;
 308         rq->channel = c;
 309         rq->ix      = c->ix;
 310
 311         return 0;
 312
 313 err_rq_wq_destroy:
 314         mlx5_wq_destroy(&rq->wq_ctrl);
 315
 316         return err;
 317 }
 318
 319 static void mlx5e_destroy_rq(struct mlx5e_rq *rq)
 320 {
 321         kfree(rq->skb);
 322         mlx5_wq_destroy(&rq->wq_ctrl);
 323 }
 324
 325 static int mlx5e_enable_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param)
 326 {
 327         struct mlx5e_channel *c = rq->channel;
 328         struct mlx5e_priv *priv = c->priv;
 329         struct mlx5_core_dev *mdev = priv->mdev;
 330
 331         void *in;
 332         void *rqc;
 333         void *wq;
 334         int inlen;
 335         int err;
 336
 337         inlen = MLX5_ST_SZ_BYTES(create_rq_in) +
 338                 sizeof(u64) * rq->wq_ctrl.buf.npages;
 339         in = mlx5_vzalloc(inlen);
 340         if (!in)
 341                 return -ENOMEM;
 342
 343         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
 344         wq  = MLX5_ADDR_OF(rqc, rqc, wq);
 345
 346         memcpy(rqc, param->rqc, sizeof(param->rqc));
 347
 348         MLX5_SET(rqc,  rqc, cqn,                rq->cq.mcq.cqn);
 349         MLX5_SET(rqc,  rqc, state,              MLX5_RQC_STATE_RST);
 350         MLX5_SET(rqc,  rqc, flush_in_error_en,  1);
 351         MLX5_SET(wq,   wq,  log_wq_pg_sz,       rq->wq_ctrl.buf.page_shift -
 352                                                 MLX5_ADAPTER_PAGE_SHIFT);
 353         MLX5_SET64(wq, wq,  dbr_addr,           rq->wq_ctrl.db.dma);
 354
 355         mlx5_fill_page_array(&rq->wq_ctrl.buf,
 356                              (__be64 *)MLX5_ADDR_OF(wq, wq, pas));
 357
 358         err = mlx5_core_create_rq(mdev, in, inlen, &rq->rqn);
 359
 360         kvfree(in);
 361
 362         return err;
 363 }
 364
 365 static int mlx5e_modify_rq(struct mlx5e_rq *rq, int curr_state, int next_state)
 366 {
 367         struct mlx5e_channel *c = rq->channel;
 368         struct mlx5e_priv *priv = c->priv;
 369         struct mlx5_core_dev *mdev = priv->mdev;
 370
 371         void *in;
 372         void *rqc;
 373         int inlen;
 374         int err;
 375
 376         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
 377         in = mlx5_vzalloc(inlen);
 378         if (!in)
 379                 return -ENOMEM;
 380
 381         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
 382
 383         MLX5_SET(modify_rq_in, in, rq_state, curr_state);
 384         MLX5_SET(rqc, rqc, state, next_state);
 385
 386         err = mlx5_core_modify_rq(mdev, rq->rqn, in, inlen);
 387
 388         kvfree(in);
 389
 390         return err;
 391 }
 392
 393 static void mlx5e_disable_rq(struct mlx5e_rq *rq)
 394 {
 395         struct mlx5e_channel *c = rq->channel;
 396         struct mlx5e_priv *priv = c->priv;
 397         struct mlx5_core_dev *mdev = priv->mdev;
 398
 399         mlx5_core_destroy_rq(mdev, rq->rqn);
 400 }
 401
 402 static int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq)
 403 {
 404         struct mlx5e_channel *c = rq->channel;
 405         struct mlx5e_priv *priv = c->priv;
 406         struct mlx5_wq_ll *wq = &rq->wq;
 407         int i;
 408
 409         for (i = 0; i < 1000; i++) {
 410                 if (wq->cur_sz >= priv->params.min_rx_wqes)
 411                         return 0;
 412
 413                 msleep(20);
 414         }
 415
 416         return -ETIMEDOUT;
 417 }
 418
 419 static int mlx5e_open_rq(struct mlx5e_channel *c,
 420                          struct mlx5e_rq_param *param,
 421                          struct mlx5e_rq *rq)
 422 {
 423         int err;
 424
 425         err = mlx5e_create_rq(c, param, rq);
 426         if (err)
 427                 return err;
 428
 429         err = mlx5e_enable_rq(rq, param);
 430         if (err)
 431                 goto err_destroy_rq;
 432
 433         err = mlx5e_modify_rq(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
 434         if (err)
 435                 goto err_disable_rq;
 436
 437         set_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state);
 438         mlx5e_send_nop(&c->sq[0], true); /* trigger mlx5e_post_rx_wqes() */
 439
 440         return 0;
 441
 442 err_disable_rq:
 443         mlx5e_disable_rq(rq);
 444 err_destroy_rq:
 445         mlx5e_destroy_rq(rq);
 446
 447         return err;
 448 }
 449
 450 static void mlx5e_close_rq(struct mlx5e_rq *rq)
 451 {
 452         clear_bit(MLX5E_RQ_STATE_POST_WQES_ENABLE, &rq->state);
 453         napi_synchronize(&rq->channel->napi); /* prevent mlx5e_post_rx_wqes */
 454
 455         mlx5e_modify_rq(rq, MLX5_RQC_STATE_RDY, MLX5_RQC_STATE_ERR);
 456         while (!mlx5_wq_ll_is_empty(&rq->wq))
 457                 msleep(20);
 458
 459         /* avoid destroying rq before mlx5e_poll_rx_cq() is done with it */
 460         napi_synchronize(&rq->channel->napi);
 461
 462         mlx5e_disable_rq(rq);
 463         mlx5e_destroy_rq(rq);
 464 }
 465
 466 static void mlx5e_free_sq_db(struct mlx5e_sq *sq)
 467 {
 468         kfree(sq->dma_fifo);
 469         kfree(sq->skb);
 470 }
 471
 472 static int mlx5e_alloc_sq_db(struct mlx5e_sq *sq, int numa)
 473 {
 474         int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
 475         int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS;
 476
 477         sq->skb = kzalloc_node(wq_sz * sizeof(*sq->skb), GFP_KERNEL, numa);
 478         sq->dma_fifo = kzalloc_node(df_sz * sizeof(*sq->dma_fifo), GFP_KERNEL,
 479                                     numa);
 480
 481         if (!sq->skb || !sq->dma_fifo) {
 482                 mlx5e_free_sq_db(sq);
 483                 return -ENOMEM;
 484         }
 485
 486         sq->dma_fifo_mask = df_sz - 1;
 487
 488         return 0;
 489 }
 490
 491 static int mlx5e_create_sq(struct mlx5e_channel *c,
 492                            int tc,
 493                            struct mlx5e_sq_param *param,
 494                            struct mlx5e_sq *sq)
 495 {
 496         struct mlx5e_priv *priv = c->priv;
 497         struct mlx5_core_dev *mdev = priv->mdev;
 498
 499         void *sqc = param->sqc;
 500         void *sqc_wq = MLX5_ADDR_OF(sqc, sqc, wq);
 501         int txq_ix;
 502         int err;
 503
 504         err = mlx5_alloc_map_uar(mdev, &sq->uar);
 505         if (err)
 506                 return err;
 507
 508         param->wq.db_numa_node = cpu_to_node(c->cpu);
 509
 510         err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, &sq->wq,
 511                                  &sq->wq_ctrl);
 512         if (err)
 513                 goto err_unmap_free_uar;
 514
 515         sq->wq.db       = &sq->wq.db[MLX5_SND_DBR];
 516         sq->uar_map     = sq->uar.map;
 517         sq->uar_bf_map  = sq->uar.bf_map;
 518         sq->bf_buf_size = (1 << MLX5_CAP_GEN(mdev, log_bf_reg_size)) / 2;
 519         sq->max_inline  = param->max_inline;
 520
 521         err = mlx5e_alloc_sq_db(sq, cpu_to_node(c->cpu));
 522         if (err)
 523                 goto err_sq_wq_destroy;
 524
 525         txq_ix = c->ix + tc * priv->params.num_channels;
 526         sq->txq = netdev_get_tx_queue(priv->netdev, txq_ix);
 527
 528         sq->pdev      = c->pdev;
 529         sq->mkey_be   = c->mkey_be;
 530         sq->channel   = c;
 531         sq->tc        = tc;
 532         sq->edge      = (sq->wq.sz_m1 + 1) - MLX5_SEND_WQE_MAX_WQEBBS;
 533         sq->bf_budget = MLX5E_SQ_BF_BUDGET;
 534         priv->txq_to_sq_map[txq_ix] = sq;
 535
 536         return 0;
 537
 538 err_sq_wq_destroy:
 539         mlx5_wq_destroy(&sq->wq_ctrl);
 540
 541 err_unmap_free_uar:
 542         mlx5_unmap_free_uar(mdev, &sq->uar);
 543
 544         return err;
 545 }
 546
 547 static void mlx5e_destroy_sq(struct mlx5e_sq *sq)
 548 {
 549         struct mlx5e_channel *c = sq->channel;
 550         struct mlx5e_priv *priv = c->priv;
 551
 552         mlx5e_free_sq_db(sq);
 553         mlx5_wq_destroy(&sq->wq_ctrl);
 554         mlx5_unmap_free_uar(priv->mdev, &sq->uar);
 555 }
 556
 557 static int mlx5e_enable_sq(struct mlx5e_sq *sq, struct mlx5e_sq_param *param)
 558 {
 559         struct mlx5e_channel *c = sq->channel;
 560         struct mlx5e_priv *priv = c->priv;
 561         struct mlx5_core_dev *mdev = priv->mdev;
 562
 563         void *in;
 564         void *sqc;
 565         void *wq;
 566         int inlen;
 567         int err;
 568
 569         inlen = MLX5_ST_SZ_BYTES(create_sq_in) +
 570                 sizeof(u64) * sq->wq_ctrl.buf.npages;
 571         in = mlx5_vzalloc(inlen);
 572         if (!in)
 573                 return -ENOMEM;
 574
 575         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
 576         wq = MLX5_ADDR_OF(sqc, sqc, wq);
 577
 578         memcpy(sqc, param->sqc, sizeof(param->sqc));
 579
 580         MLX5_SET(sqc,  sqc, tis_num_0,          priv->tisn[sq->tc]);
 581         MLX5_SET(sqc,  sqc, cqn,                c->sq[sq->tc].cq.mcq.cqn);
 582         MLX5_SET(sqc,  sqc, state,              MLX5_SQC_STATE_RST);
 583         MLX5_SET(sqc,  sqc, tis_lst_sz,         1);
 584         MLX5_SET(sqc,  sqc, flush_in_error_en,  1);
 585
 586         MLX5_SET(wq,   wq, wq_type,       MLX5_WQ_TYPE_CYCLIC);
 587         MLX5_SET(wq,   wq, uar_page,      sq->uar.index);
 588         MLX5_SET(wq,   wq, log_wq_pg_sz,  sq->wq_ctrl.buf.page_shift -
 589                                           MLX5_ADAPTER_PAGE_SHIFT);
 590         MLX5_SET64(wq, wq, dbr_addr,      sq->wq_ctrl.db.dma);
 591
 592         mlx5_fill_page_array(&sq->wq_ctrl.buf,
 593                              (__be64 *)MLX5_ADDR_OF(wq, wq, pas));
 594
 595         err = mlx5_core_create_sq(mdev, in, inlen, &sq->sqn);
 596
 597         kvfree(in);
 598
 599         return err;
 600 }
 601
 602 static int mlx5e_modify_sq(struct mlx5e_sq *sq, int curr_state, int next_state)
 603 {
 604         struct mlx5e_channel *c = sq->channel;
 605         struct mlx5e_priv *priv = c->priv;
 606         struct mlx5_core_dev *mdev = priv->mdev;
 607
 608         void *in;
 609         void *sqc;
 610         int inlen;
 611         int err;
 612
 613         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
 614         in = mlx5_vzalloc(inlen);
 615         if (!in)
 616                 return -ENOMEM;
 617
 618         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
 619
 620         MLX5_SET(modify_sq_in, in, sq_state, curr_state);
 621         MLX5_SET(sqc, sqc, state, next_state);
 622
 623         err = mlx5_core_modify_sq(mdev, sq->sqn, in, inlen);
 624
 625         kvfree(in);
 626
 627         return err;
 628 }
 629
 630 static void mlx5e_disable_sq(struct mlx5e_sq *sq)
 631 {
 632         struct mlx5e_channel *c = sq->channel;
 633         struct mlx5e_priv *priv = c->priv;
 634         struct mlx5_core_dev *mdev = priv->mdev;
 635
 636         mlx5_core_destroy_sq(mdev, sq->sqn);
 637 }
 638
 639 static int mlx5e_open_sq(struct mlx5e_channel *c,
 640                          int tc,
 641                          struct mlx5e_sq_param *param,
 642                          struct mlx5e_sq *sq)
 643 {
 644         int err;
 645
 646         err = mlx5e_create_sq(c, tc, param, sq);
 647         if (err)
 648                 return err;
 649
 650         err = mlx5e_enable_sq(sq, param);
 651         if (err)
 652                 goto err_destroy_sq;
 653
 654         err = mlx5e_modify_sq(sq, MLX5_SQC_STATE_RST, MLX5_SQC_STATE_RDY);
 655         if (err)
 656                 goto err_disable_sq;
 657
 658         set_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state);
 659         netdev_tx_reset_queue(sq->txq);
 660         netif_tx_start_queue(sq->txq);
 661
 662         return 0;
 663
 664 err_disable_sq:
 665         mlx5e_disable_sq(sq);
 666 err_destroy_sq:
 667         mlx5e_destroy_sq(sq);
 668
 669         return err;
 670 }
 671
 672 static inline void netif_tx_disable_queue(struct netdev_queue *txq)
 673 {
 674         __netif_tx_lock_bh(txq);
 675         netif_tx_stop_queue(txq);
 676         __netif_tx_unlock_bh(txq);
 677 }
 678
 679 static void mlx5e_close_sq(struct mlx5e_sq *sq)
 680 {
 681         clear_bit(MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, &sq->state);
 682         napi_synchronize(&sq->channel->napi); /* prevent netif_tx_wake_queue */
 683         netif_tx_disable_queue(sq->txq);
 684
 685         /* ensure hw is notified of all pending wqes */
 686         if (mlx5e_sq_has_room_for(sq, 1))
 687                 mlx5e_send_nop(sq, true);
 688
 689         mlx5e_modify_sq(sq, MLX5_SQC_STATE_RDY, MLX5_SQC_STATE_ERR);
 690         while (sq->cc != sq->pc) /* wait till sq is empty */
 691                 msleep(20);
 692
 693         /* avoid destroying sq before mlx5e_poll_tx_cq() is done with it */
 694         napi_synchronize(&sq->channel->napi);
 695
 696         mlx5e_disable_sq(sq);
 697         mlx5e_destroy_sq(sq);
 698 }
 699
 700 static int mlx5e_create_cq(struct mlx5e_channel *c,
 701                            struct mlx5e_cq_param *param,
 702                            struct mlx5e_cq *cq)
 703 {
 704         struct mlx5e_priv *priv = c->priv;
 705         struct mlx5_core_dev *mdev = priv->mdev;
 706         struct mlx5_core_cq *mcq = &cq->mcq;
 707         int eqn_not_used;
 708         int irqn;
 709         int err;
 710         u32 i;
 711
 712         param->wq.buf_numa_node = cpu_to_node(c->cpu);
 713         param->wq.db_numa_node  = cpu_to_node(c->cpu);
 714         param->eq_ix   = c->ix;
 715
 716         err = mlx5_cqwq_create(mdev, &param->wq, param->cqc, &cq->wq,
 717                                &cq->wq_ctrl);
 718         if (err)
 719                 return err;
 720
 721         mlx5_vector2eqn(mdev, param->eq_ix, &eqn_not_used, &irqn);
 722
 723         cq->napi        = &c->napi;
 724
 725         mcq->cqe_sz     = 64;
 726         mcq->set_ci_db  = cq->wq_ctrl.db.db;
 727         mcq->arm_db     = cq->wq_ctrl.db.db + 1;
 728         *mcq->set_ci_db = 0;
 729         *mcq->arm_db    = 0;
 730         mcq->vector     = param->eq_ix;
 731         mcq->comp       = mlx5e_completion_event;
 732         mcq->event      = mlx5e_cq_error_event;
 733         mcq->irqn       = irqn;
 734         mcq->uar        = &priv->cq_uar;
 735
 736         for (i = 0; i < mlx5_cqwq_get_size(&cq->wq); i++) {
 737                 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(&cq->wq, i);
 738
 739                 cqe->op_own = 0xf1;
 740         }
 741
 742         cq->channel = c;
 743
 744         return 0;
 745 }
 746
 747 static void mlx5e_destroy_cq(struct mlx5e_cq *cq)
 748 {
 749         mlx5_wq_destroy(&cq->wq_ctrl);
 750 }
 751
 752 static int mlx5e_enable_cq(struct mlx5e_cq *cq, struct mlx5e_cq_param *param)
 753 {
 754         struct mlx5e_channel *c = cq->channel;
 755         struct mlx5e_priv *priv = c->priv;
 756         struct mlx5_core_dev *mdev = priv->mdev;
 757         struct mlx5_core_cq *mcq = &cq->mcq;
 758
 759         void *in;
 760         void *cqc;
 761         int inlen;
 762         int irqn_not_used;
 763         int eqn;
 764         int err;
 765
 766         inlen = MLX5_ST_SZ_BYTES(create_cq_in) +
 767                 sizeof(u64) * cq->wq_ctrl.buf.npages;
 768         in = mlx5_vzalloc(inlen);
 769         if (!in)
 770                 return -ENOMEM;
 771
 772         cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context);
 773
 774         memcpy(cqc, param->cqc, sizeof(param->cqc));
 775
 776         mlx5_fill_page_array(&cq->wq_ctrl.buf,
 777                              (__be64 *)MLX5_ADDR_OF(create_cq_in, in, pas));
 778
 779         mlx5_vector2eqn(mdev, param->eq_ix, &eqn, &irqn_not_used);
 780
 781         MLX5_SET(cqc,   cqc, c_eqn,         eqn);
 782         MLX5_SET(cqc,   cqc, uar_page,      mcq->uar->index);
 783         MLX5_SET(cqc,   cqc, log_page_size, cq->wq_ctrl.buf.page_shift -
 784                                             MLX5_ADAPTER_PAGE_SHIFT);
 785         MLX5_SET64(cqc, cqc, dbr_addr,      cq->wq_ctrl.db.dma);
 786
 787         err = mlx5_core_create_cq(mdev, mcq, in, inlen);
 788
 789         kvfree(in);
 790
 791         if (err)
 792                 return err;
 793
 794         mlx5e_cq_arm(cq);
 795
 796         return 0;
 797 }
 798
 799 static void mlx5e_disable_cq(struct mlx5e_cq *cq)
 800 {
 801         struct mlx5e_channel *c = cq->channel;
 802         struct mlx5e_priv *priv = c->priv;
 803         struct mlx5_core_dev *mdev = priv->mdev;
 804
 805         mlx5_core_destroy_cq(mdev, &cq->mcq);
 806 }
 807
 808 static int mlx5e_open_cq(struct mlx5e_channel *c,
 809                          struct mlx5e_cq_param *param,
 810                          struct mlx5e_cq *cq,
 811                          u16 moderation_usecs,
 812                          u16 moderation_frames)
 813 {
 814         int err;
 815         struct mlx5e_priv *priv = c->priv;
 816         struct mlx5_core_dev *mdev = priv->mdev;
 817
 818         err = mlx5e_create_cq(c, param, cq);
 819         if (err)
 820                 return err;
 821
 822         err = mlx5e_enable_cq(cq, param);
 823         if (err)
 824                 goto err_destroy_cq;
 825
 826         err = mlx5_core_modify_cq_moderation(mdev, &cq->mcq,
 827                                              moderation_usecs,
 828                                              moderation_frames);
 829         if (err)
 830                 goto err_destroy_cq;
 831
 832         return 0;
 833
 834 err_destroy_cq:
 835         mlx5e_destroy_cq(cq);
 836
 837         return err;
 838 }
 839
 840 static void mlx5e_close_cq(struct mlx5e_cq *cq)
 841 {
 842         mlx5e_disable_cq(cq);
 843         mlx5e_destroy_cq(cq);
 844 }
 845
 846 static int mlx5e_get_cpu(struct mlx5e_priv *priv, int ix)
 847 {
 848         return cpumask_first(priv->mdev->priv.irq_info[ix].mask);
 849 }
 850
 851 static int mlx5e_open_tx_cqs(struct mlx5e_channel *c,
 852                              struct mlx5e_channel_param *cparam)
 853 {
 854         struct mlx5e_priv *priv = c->priv;
 855         int err;
 856         int tc;
 857
 858         for (tc = 0; tc < c->num_tc; tc++) {
 859                 err = mlx5e_open_cq(c, &cparam->tx_cq, &c->sq[tc].cq,
 860                                     priv->params.tx_cq_moderation_usec,
 861                                     priv->params.tx_cq_moderation_pkts);
 862                 if (err)
 863                         goto err_close_tx_cqs;
 864         }
 865
 866         return 0;
 867
 868 err_close_tx_cqs:
 869         for (tc--; tc >= 0; tc--)
 870                 mlx5e_close_cq(&c->sq[tc].cq);
 871
 872         return err;
 873 }
 874
 875 static void mlx5e_close_tx_cqs(struct mlx5e_channel *c)
 876 {
 877         int tc;
 878
 879         for (tc = 0; tc < c->num_tc; tc++)
 880                 mlx5e_close_cq(&c->sq[tc].cq);
 881 }
 882
 883 static int mlx5e_open_sqs(struct mlx5e_channel *c,
 884                           struct mlx5e_channel_param *cparam)
 885 {
 886         int err;
 887         int tc;
 888
 889         for (tc = 0; tc < c->num_tc; tc++) {
 890                 err = mlx5e_open_sq(c, tc, &cparam->sq, &c->sq[tc]);
 891                 if (err)
 892                         goto err_close_sqs;
 893         }
 894
 895         return 0;
 896
 897 err_close_sqs:
 898         for (tc--; tc >= 0; tc--)
 899                 mlx5e_close_sq(&c->sq[tc]);
 900
 901         return err;
 902 }
 903
 904 static void mlx5e_close_sqs(struct mlx5e_channel *c)
 905 {
 906         int tc;
 907
 908         for (tc = 0; tc < c->num_tc; tc++)
 909                 mlx5e_close_sq(&c->sq[tc]);
 910 }
 911
 912 static void mlx5e_build_tc_to_txq_map(struct mlx5e_channel *c,
 913                                       int num_channels)
 914 {
 915         int i;
 916
 917         for (i = 0; i < MLX5E_MAX_NUM_TC; i++)
 918                 c->tc_to_txq_map[i] = c->ix + i * num_channels;
 919 }
 920
 921 static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
 922                               struct mlx5e_channel_param *cparam,
 923                               struct mlx5e_channel **cp)
 924 {
 925         struct net_device *netdev = priv->netdev;
 926         int cpu = mlx5e_get_cpu(priv, ix);
 927         struct mlx5e_channel *c;
 928         int err;
 929
 930         c = kzalloc_node(sizeof(*c), GFP_KERNEL, cpu_to_node(cpu));
 931         if (!c)
 932                 return -ENOMEM;
 933
 934         c->priv     = priv;
 935         c->ix       = ix;
 936         c->cpu      = cpu;
 937         c->pdev     = &priv->mdev->pdev->dev;
 938         c->netdev   = priv->netdev;
 939         c->mkey_be  = cpu_to_be32(priv->mr.key);
 940         c->num_tc   = priv->params.num_tc;
 941
 942         mlx5e_build_tc_to_txq_map(c, priv->params.num_channels);
 943
 944         netif_napi_add(netdev, &c->napi, mlx5e_napi_poll, 64);
 945
 946         err = mlx5e_open_tx_cqs(c, cparam);
 947         if (err)
 948                 goto err_napi_del;
 949
 950         err = mlx5e_open_cq(c, &cparam->rx_cq, &c->rq.cq,
 951                             priv->params.rx_cq_moderation_usec,
 952                             priv->params.rx_cq_moderation_pkts);
 953         if (err)
 954                 goto err_close_tx_cqs;
 955
 956         napi_enable(&c->napi);
 957
 958         err = mlx5e_open_sqs(c, cparam);
 959         if (err)
 960                 goto err_disable_napi;
 961
 962         err = mlx5e_open_rq(c, &cparam->rq, &c->rq);
 963         if (err)
 964                 goto err_close_sqs;
 965
 966         netif_set_xps_queue(netdev, get_cpu_mask(c->cpu), ix);
 967         *cp = c;
 968
 969         return 0;
 970
 971 err_close_sqs:
 972         mlx5e_close_sqs(c);
 973
 974 err_disable_napi:
 975         napi_disable(&c->napi);
 976         mlx5e_close_cq(&c->rq.cq);
 977
 978 err_close_tx_cqs:
 979         mlx5e_close_tx_cqs(c);
 980
 981 err_napi_del:
 982         netif_napi_del(&c->napi);
 983         kfree(c);
 984
 985         return err;
 986 }
 987
 988 static void mlx5e_close_channel(struct mlx5e_channel *c)
 989 {
 990         mlx5e_close_rq(&c->rq);
 991         mlx5e_close_sqs(c);
 992         napi_disable(&c->napi);
 993         mlx5e_close_cq(&c->rq.cq);
 994         mlx5e_close_tx_cqs(c);
 995         netif_napi_del(&c->napi);
 996         kfree(c);
 997 }
 998
 999 static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
1000                                  struct mlx5e_rq_param *param)
1001 {
1002         void *rqc = param->rqc;
1003         void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
1004
1005         MLX5_SET(wq, wq, wq_type,          MLX5_WQ_TYPE_LINKED_LIST);
1006         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1007         MLX5_SET(wq, wq, log_wq_stride,    ilog2(sizeof(struct mlx5e_rx_wqe)));
1008         MLX5_SET(wq, wq, log_wq_sz,        priv->params.log_rq_size);
1009         MLX5_SET(wq, wq, pd,               priv->pdn);
1010
1011         param->wq.buf_numa_node = dev_to_node(&priv->mdev->pdev->dev);
1012         param->wq.linear = 1;
1013 }
1014
1015 static void mlx5e_build_sq_param(struct mlx5e_priv *priv,
1016                                  struct mlx5e_sq_param *param)
1017 {
1018         void *sqc = param->sqc;
1019         void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
1020
1021         MLX5_SET(wq, wq, log_wq_sz,     priv->params.log_sq_size);
1022         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1023         MLX5_SET(wq, wq, pd,            priv->pdn);
1024
1025         param->wq.buf_numa_node = dev_to_node(&priv->mdev->pdev->dev);
1026         param->max_inline = priv->params.tx_max_inline;
1027 }
1028
1029 static void mlx5e_build_common_cq_param(struct mlx5e_priv *priv,
1030                                         struct mlx5e_cq_param *param)
1031 {
1032         void *cqc = param->cqc;
1033
1034         MLX5_SET(cqc, cqc, uar_page, priv->cq_uar.index);
1035 }
1036
1037 static void mlx5e_build_rx_cq_param(struct mlx5e_priv *priv,
1038                                     struct mlx5e_cq_param *param)
1039 {
1040         void *cqc = param->cqc;
1041
1042         MLX5_SET(cqc, cqc, log_cq_size,  priv->params.log_rq_size);
1043
1044         mlx5e_build_common_cq_param(priv, param);
1045 }
1046
1047 static void mlx5e_build_tx_cq_param(struct mlx5e_priv *priv,
1048                                     struct mlx5e_cq_param *param)
1049 {
1050         void *cqc = param->cqc;
1051
1052         MLX5_SET(cqc, cqc, log_cq_size,  priv->params.log_sq_size);
1053
1054         mlx5e_build_common_cq_param(priv, param);
1055 }
1056
1057 static void mlx5e_build_channel_param(struct mlx5e_priv *priv,
1058                                       struct mlx5e_channel_param *cparam)
1059 {
1060         memset(cparam, 0, sizeof(*cparam));
1061
1062         mlx5e_build_rq_param(priv, &cparam->rq);
1063         mlx5e_build_sq_param(priv, &cparam->sq);
1064         mlx5e_build_rx_cq_param(priv, &cparam->rx_cq);
1065         mlx5e_build_tx_cq_param(priv, &cparam->tx_cq);
1066 }
1067
1068 static int mlx5e_open_channels(struct mlx5e_priv *priv)
1069 {
1070         struct mlx5e_channel_param cparam;
1071         int nch = priv->params.num_channels;
1072         int err = -ENOMEM;
1073         int i;
1074         int j;
1075
1076         priv->channel = kcalloc(nch, sizeof(struct mlx5e_channel *),
1077                                 GFP_KERNEL);
1078
1079         priv->txq_to_sq_map = kcalloc(nch * priv->params.num_tc,
1080                                       sizeof(struct mlx5e_sq *), GFP_KERNEL);
1081
1082         if (!priv->channel || !priv->txq_to_sq_map)
1083                 goto err_free_txq_to_sq_map;
1084
1085         mlx5e_build_channel_param(priv, &cparam);
1086         for (i = 0; i < nch; i++) {
1087                 err = mlx5e_open_channel(priv, i, &cparam, &priv->channel[i]);
1088                 if (err)
1089                         goto err_close_channels;
1090         }
1091
1092         for (j = 0; j < nch; j++) {
1093                 err = mlx5e_wait_for_min_rx_wqes(&priv->channel[j]->rq);
1094                 if (err)
1095                         goto err_close_channels;
1096         }
1097
1098         return 0;
1099
1100 err_close_channels:
1101         for (i--; i >= 0; i--)
1102                 mlx5e_close_channel(priv->channel[i]);
1103
1104 err_free_txq_to_sq_map:
1105         kfree(priv->txq_to_sq_map);
1106         kfree(priv->channel);
1107
1108         return err;
1109 }
1110
1111 static void mlx5e_close_channels(struct mlx5e_priv *priv)
1112 {
1113         int i;
1114
1115         for (i = 0; i < priv->params.num_channels; i++)
1116                 mlx5e_close_channel(priv->channel[i]);
1117
1118         kfree(priv->txq_to_sq_map);
1119         kfree(priv->channel);
1120 }
1121
1122 static int mlx5e_open_tis(struct mlx5e_priv *priv, int tc)
1123 {
1124         struct mlx5_core_dev *mdev = priv->mdev;
1125         u32 in[MLX5_ST_SZ_DW(create_tis_in)];
1126         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1127
1128         memset(in, 0, sizeof(in));
1129
1130         MLX5_SET(tisc, tisc, prio,  tc);
1131         MLX5_SET(tisc, tisc, transport_domain, priv->tdn);
1132
1133         return mlx5_core_create_tis(mdev, in, sizeof(in), &priv->tisn[tc]);
1134 }
1135
1136 static void mlx5e_close_tis(struct mlx5e_priv *priv, int tc)
1137 {
1138         mlx5_core_destroy_tis(priv->mdev, priv->tisn[tc]);
1139 }
1140
1141 static int mlx5e_open_tises(struct mlx5e_priv *priv)
1142 {
1143         int err;
1144         int tc;
1145
1146         for (tc = 0; tc < priv->params.num_tc; tc++) {
1147                 err = mlx5e_open_tis(priv, tc);
1148                 if (err)
1149                         goto err_close_tises;
1150         }
1151
1152         return 0;
1153
1154 err_close_tises:
1155         for (tc--; tc >= 0; tc--)
1156                 mlx5e_close_tis(priv, tc);
1157
1158         return err;
1159 }
1160
1161 static void mlx5e_close_tises(struct mlx5e_priv *priv)
1162 {
1163         int tc;
1164
1165         for (tc = 0; tc < priv->params.num_tc; tc++)
1166                 mlx5e_close_tis(priv, tc);
1167 }
1168
1169 static int mlx5e_rx_hash_fn(int hfunc)
1170 {
1171         return (hfunc == ETH_RSS_HASH_TOP) ?
1172                MLX5_RX_HASH_FN_TOEPLITZ :
1173                MLX5_RX_HASH_FN_INVERTED_XOR8;
1174 }
1175
1176 static int mlx5e_bits_invert(unsigned long a, int size)
1177 {
1178         int inv = 0;
1179         int i;
1180
1181         for (i = 0; i < size; i++)
1182                 inv |= (test_bit(size - i - 1, &a) ? 1 : 0) << i;
1183
1184         return inv;
1185 }
1186
1187 static int mlx5e_open_rqt(struct mlx5e_priv *priv)
1188 {
1189         struct mlx5_core_dev *mdev = priv->mdev;
1190         u32 *in;
1191         u32 out[MLX5_ST_SZ_DW(create_rqt_out)];
1192         void *rqtc;
1193         int inlen;
1194         int err;
1195         int log_tbl_sz = priv->params.rx_hash_log_tbl_sz;
1196         int sz = 1 << log_tbl_sz;
1197         int i;
1198
1199         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
1200         in = mlx5_vzalloc(inlen);
1201         if (!in)
1202                 return -ENOMEM;
1203
1204         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
1205
1206         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
1207         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
1208
1209         for (i = 0; i < sz; i++) {
1210                 int ix = i;
1211
1212                 if (priv->params.rss_hfunc == ETH_RSS_HASH_XOR)
1213                         ix = mlx5e_bits_invert(i, log_tbl_sz);
1214
1215                 ix = ix % priv->params.num_channels;
1216                 MLX5_SET(rqtc, rqtc, rq_num[i], priv->channel[ix]->rq.rqn);
1217         }
1218
1219         MLX5_SET(create_rqt_in, in, opcode, MLX5_CMD_OP_CREATE_RQT);
1220
1221         memset(out, 0, sizeof(out));
1222         err = mlx5_cmd_exec_check_status(mdev, in, inlen, out, sizeof(out));
1223         if (!err)
1224                 priv->rqtn = MLX5_GET(create_rqt_out, out, rqtn);
1225
1226         kvfree(in);
1227
1228         return err;
1229 }
1230
1231 static void mlx5e_close_rqt(struct mlx5e_priv *priv)
1232 {
1233         u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)];
1234         u32 out[MLX5_ST_SZ_DW(destroy_rqt_out)];
1235
1236         memset(in, 0, sizeof(in));
1237
1238         MLX5_SET(destroy_rqt_in, in, opcode, MLX5_CMD_OP_DESTROY_RQT);
1239         MLX5_SET(destroy_rqt_in, in, rqtn, priv->rqtn);
1240
1241         mlx5_cmd_exec_check_status(priv->mdev, in, sizeof(in), out,
1242                                    sizeof(out));
1243 }
1244
1245 static void mlx5e_build_tir_ctx(struct mlx5e_priv *priv, u32 *tirc, int tt)
1246 {
1247         void *hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1248
1249         MLX5_SET(tirc, tirc, transport_domain, priv->tdn);
1250
1251 #define ROUGH_MAX_L2_L3_HDR_SZ 256
1252
1253 #define MLX5_HASH_IP            (MLX5_HASH_FIELD_SEL_SRC_IP   |\
1254                                  MLX5_HASH_FIELD_SEL_DST_IP)
1255
1256 #define MLX5_HASH_IP_L4PORTS    (MLX5_HASH_FIELD_SEL_SRC_IP   |\
1257                                  MLX5_HASH_FIELD_SEL_DST_IP   |\
1258                                  MLX5_HASH_FIELD_SEL_L4_SPORT |\
1259                                  MLX5_HASH_FIELD_SEL_L4_DPORT)
1260
1261 #define MLX5_HASH_IP_IPSEC_SPI  (MLX5_HASH_FIELD_SEL_SRC_IP   |\
1262                                  MLX5_HASH_FIELD_SEL_DST_IP   |\
1263                                  MLX5_HASH_FIELD_SEL_IPSEC_SPI)
1264
1265         if (priv->params.lro_en) {
1266                 MLX5_SET(tirc, tirc, lro_enable_mask,
1267                          MLX5_TIRC_LRO_ENABLE_MASK_IPV4_LRO |
1268                          MLX5_TIRC_LRO_ENABLE_MASK_IPV6_LRO);
1269                 MLX5_SET(tirc, tirc, lro_max_ip_payload_size,
1270                          (priv->params.lro_wqe_sz -
1271                           ROUGH_MAX_L2_L3_HDR_SZ) >> 8);
1272                 MLX5_SET(tirc, tirc, lro_timeout_period_usecs,
1273                          MLX5_CAP_ETH(priv->mdev,
1274                                       lro_timer_supported_periods[3]));
1275         }
1276
1277         switch (tt) {
1278         case MLX5E_TT_ANY:
1279                 MLX5_SET(tirc, tirc, disp_type,
1280                          MLX5_TIRC_DISP_TYPE_DIRECT);
1281                 MLX5_SET(tirc, tirc, inline_rqn,
1282                          priv->channel[0]->rq.rqn);
1283                 break;
1284         default:
1285                 MLX5_SET(tirc, tirc, disp_type,
1286                          MLX5_TIRC_DISP_TYPE_INDIRECT);
1287                 MLX5_SET(tirc, tirc, indirect_table,
1288                          priv->rqtn);
1289                 MLX5_SET(tirc, tirc, rx_hash_fn,
1290                          mlx5e_rx_hash_fn(priv->params.rss_hfunc));
1291                 if (priv->params.rss_hfunc == ETH_RSS_HASH_TOP) {
1292                         void *rss_key = MLX5_ADDR_OF(tirc, tirc,
1293                                                      rx_hash_toeplitz_key);
1294                         size_t len = MLX5_FLD_SZ_BYTES(tirc,
1295                                                        rx_hash_toeplitz_key);
1296
1297                         MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
1298                         netdev_rss_key_fill(rss_key, len);
1299                 }
1300                 break;
1301         }
1302
1303         switch (tt) {
1304         case MLX5E_TT_IPV4_TCP:
1305                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1306                          MLX5_L3_PROT_TYPE_IPV4);
1307                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1308                          MLX5_L4_PROT_TYPE_TCP);
1309                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1310                          MLX5_HASH_IP_L4PORTS);
1311                 break;
1312
1313         case MLX5E_TT_IPV6_TCP:
1314                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1315                          MLX5_L3_PROT_TYPE_IPV6);
1316                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1317                          MLX5_L4_PROT_TYPE_TCP);
1318                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1319                          MLX5_HASH_IP_L4PORTS);
1320                 break;
1321
1322         case MLX5E_TT_IPV4_UDP:
1323                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1324                          MLX5_L3_PROT_TYPE_IPV4);
1325                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1326                          MLX5_L4_PROT_TYPE_UDP);
1327                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1328                          MLX5_HASH_IP_L4PORTS);
1329                 break;
1330
1331         case MLX5E_TT_IPV6_UDP:
1332                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1333                          MLX5_L3_PROT_TYPE_IPV6);
1334                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1335                          MLX5_L4_PROT_TYPE_UDP);
1336                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1337                          MLX5_HASH_IP_L4PORTS);
1338                 break;
1339
1340         case MLX5E_TT_IPV4_IPSEC_AH:
1341                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1342                          MLX5_L3_PROT_TYPE_IPV4);
1343                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1344                          MLX5_HASH_IP_IPSEC_SPI);
1345                 break;
1346
1347         case MLX5E_TT_IPV6_IPSEC_AH:
1348                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1349                          MLX5_L3_PROT_TYPE_IPV6);
1350                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1351                          MLX5_HASH_IP_IPSEC_SPI);
1352                 break;
1353
1354         case MLX5E_TT_IPV4_IPSEC_ESP:
1355                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1356                          MLX5_L3_PROT_TYPE_IPV4);
1357                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1358                          MLX5_HASH_IP_IPSEC_SPI);
1359                 break;
1360
1361         case MLX5E_TT_IPV6_IPSEC_ESP:
1362                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1363                          MLX5_L3_PROT_TYPE_IPV6);
1364                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1365                          MLX5_HASH_IP_IPSEC_SPI);
1366                 break;
1367
1368         case MLX5E_TT_IPV4:
1369                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1370                          MLX5_L3_PROT_TYPE_IPV4);
1371                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1372                          MLX5_HASH_IP);
1373                 break;
1374
1375         case MLX5E_TT_IPV6:
1376                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1377                          MLX5_L3_PROT_TYPE_IPV6);
1378                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
1379                          MLX5_HASH_IP);
1380                 break;
1381         }
1382 }
1383
1384 static int mlx5e_open_tir(struct mlx5e_priv *priv, int tt)
1385 {
1386         struct mlx5_core_dev *mdev = priv->mdev;
1387         u32 *in;
1388         void *tirc;
1389         int inlen;
1390         int err;
1391
1392         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1393         in = mlx5_vzalloc(inlen);
1394         if (!in)
1395                 return -ENOMEM;
1396
1397         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1398
1399         mlx5e_build_tir_ctx(priv, tirc, tt);
1400
1401         err = mlx5_core_create_tir(mdev, in, inlen, &priv->tirn[tt]);
1402
1403         kvfree(in);
1404
1405         return err;
1406 }
1407
1408 static void mlx5e_close_tir(struct mlx5e_priv *priv, int tt)
1409 {
1410         mlx5_core_destroy_tir(priv->mdev, priv->tirn[tt]);
1411 }
1412
1413 static int mlx5e_open_tirs(struct mlx5e_priv *priv)
1414 {
1415         int err;
1416         int i;
1417
1418         for (i = 0; i < MLX5E_NUM_TT; i++) {
1419                 err = mlx5e_open_tir(priv, i);
1420                 if (err)
1421                         goto err_close_tirs;
1422         }
1423
1424         return 0;
1425
1426 err_close_tirs:
1427         for (i--; i >= 0; i--)
1428                 mlx5e_close_tir(priv, i);
1429
1430         return err;
1431 }
1432
1433 static void mlx5e_close_tirs(struct mlx5e_priv *priv)
1434 {
1435         int i;
1436
1437         for (i = 0; i < MLX5E_NUM_TT; i++)
1438                 mlx5e_close_tir(priv, i);
1439 }
1440
1441 static int mlx5e_set_dev_port_mtu(struct net_device *netdev)
1442 {
1443         struct mlx5e_priv *priv = netdev_priv(netdev);
1444         struct mlx5_core_dev *mdev = priv->mdev;
1445         int hw_mtu;
1446         int err;
1447
1448         err = mlx5_set_port_mtu(mdev, MLX5E_SW2HW_MTU(netdev->mtu), 1);
1449         if (err)
1450                 return err;
1451
1452         mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1);
1453
1454         if (MLX5E_HW2SW_MTU(hw_mtu) != netdev->mtu)
1455                 netdev_warn(netdev, "%s: Port MTU %d is different than netdev mtu %d\n",
1456                             __func__, MLX5E_HW2SW_MTU(hw_mtu), netdev->mtu);
1457
1458         netdev->mtu = MLX5E_HW2SW_MTU(hw_mtu);
1459         return 0;
1460 }
1461
1462 int mlx5e_open_locked(struct net_device *netdev)
1463 {
1464         struct mlx5e_priv *priv = netdev_priv(netdev);
1465         int num_txqs;
1466         int err;
1467
1468         num_txqs = priv->params.num_channels * priv->params.num_tc;
1469         netif_set_real_num_tx_queues(netdev, num_txqs);
1470         netif_set_real_num_rx_queues(netdev, priv->params.num_channels);
1471
1472         err = mlx5e_set_dev_port_mtu(netdev);
1473         if (err)
1474                 return err;
1475
1476         err = mlx5e_open_tises(priv);
1477         if (err) {
1478                 netdev_err(netdev, "%s: mlx5e_open_tises failed, %d\n",
1479                            __func__, err);
1480                 return err;
1481         }
1482
1483         err = mlx5e_open_channels(priv);
1484         if (err) {
1485                 netdev_err(netdev, "%s: mlx5e_open_channels failed, %d\n",
1486                            __func__, err);
1487                 goto err_close_tises;
1488         }
1489
1490         err = mlx5e_open_rqt(priv);
1491         if (err) {
1492                 netdev_err(netdev, "%s: mlx5e_open_rqt failed, %d\n",
1493                            __func__, err);
1494                 goto err_close_channels;
1495         }
1496
1497         err = mlx5e_open_tirs(priv);
1498         if (err) {
1499                 netdev_err(netdev, "%s: mlx5e_open_tir failed, %d\n",
1500                            __func__, err);
1501                 goto err_close_rqls;
1502         }
1503
1504         err = mlx5e_open_flow_table(priv);
1505         if (err) {
1506                 netdev_err(netdev, "%s: mlx5e_open_flow_table failed, %d\n",
1507                            __func__, err);
1508                 goto err_close_tirs;
1509         }
1510
1511         err = mlx5e_add_all_vlan_rules(priv);
1512         if (err) {
1513                 netdev_err(netdev, "%s: mlx5e_add_all_vlan_rules failed, %d\n",
1514                            __func__, err);
1515                 goto err_close_flow_table;
1516         }
1517
1518         mlx5e_init_eth_addr(priv);
1519
1520         set_bit(MLX5E_STATE_OPENED, &priv->state);
1521
1522         mlx5e_update_carrier(priv);
1523         mlx5e_set_rx_mode_core(priv);
1524
1525         schedule_delayed_work(&priv->update_stats_work, 0);
1526         return 0;
1527
1528 err_close_flow_table:
1529         mlx5e_close_flow_table(priv);
1530
1531 err_close_tirs:
1532         mlx5e_close_tirs(priv);
1533
1534 err_close_rqls:
1535         mlx5e_close_rqt(priv);
1536
1537 err_close_channels:
1538         mlx5e_close_channels(priv);
1539
1540 err_close_tises:
1541         mlx5e_close_tises(priv);
1542
1543         return err;
1544 }
1545
1546 static int mlx5e_open(struct net_device *netdev)
1547 {
1548         struct mlx5e_priv *priv = netdev_priv(netdev);
1549         int err;
1550
1551         mutex_lock(&priv->state_lock);
1552         err = mlx5e_open_locked(netdev);
1553         mutex_unlock(&priv->state_lock);
1554
1555         return err;
1556 }
1557
1558 int mlx5e_close_locked(struct net_device *netdev)
1559 {
1560         struct mlx5e_priv *priv = netdev_priv(netdev);
1561
1562         clear_bit(MLX5E_STATE_OPENED, &priv->state);
1563
1564         mlx5e_set_rx_mode_core(priv);
1565         mlx5e_del_all_vlan_rules(priv);
1566         netif_carrier_off(priv->netdev);
1567         mlx5e_close_flow_table(priv);
1568         mlx5e_close_tirs(priv);
1569         mlx5e_close_rqt(priv);
1570         mlx5e_close_channels(priv);
1571         mlx5e_close_tises(priv);
1572
1573         return 0;
1574 }
1575
1576 static int mlx5e_close(struct net_device *netdev)
1577 {
1578         struct mlx5e_priv *priv = netdev_priv(netdev);
1579         int err;
1580
1581         mutex_lock(&priv->state_lock);
1582         err = mlx5e_close_locked(netdev);
1583         mutex_unlock(&priv->state_lock);
1584
1585         return err;
1586 }
1587
1588 int mlx5e_update_priv_params(struct mlx5e_priv *priv,
1589                              struct mlx5e_params *new_params)
1590 {
1591         int err = 0;
1592         int was_opened;
1593
1594         WARN_ON(!mutex_is_locked(&priv->state_lock));
1595
1596         was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
1597         if (was_opened)
1598                 mlx5e_close_locked(priv->netdev);
1599
1600         priv->params = *new_params;
1601
1602         if (was_opened)
1603                 err = mlx5e_open_locked(priv->netdev);
1604
1605         return err;
1606 }
1607
1608 static struct rtnl_link_stats64 *
1609 mlx5e_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
1610 {
1611         struct mlx5e_priv *priv = netdev_priv(dev);
1612         struct mlx5e_vport_stats *vstats = &priv->stats.vport;
1613
1614         stats->rx_packets = vstats->rx_packets;
1615         stats->rx_bytes   = vstats->rx_bytes;
1616         stats->tx_packets = vstats->tx_packets;
1617         stats->tx_bytes   = vstats->tx_bytes;
1618         stats->multicast  = vstats->rx_multicast_packets +
1619                             vstats->tx_multicast_packets;
1620         stats->tx_errors  = vstats->tx_error_packets;
1621         stats->rx_errors  = vstats->rx_error_packets;
1622         stats->tx_dropped = vstats->tx_queue_dropped;
1623         stats->rx_crc_errors = 0;
1624         stats->rx_length_errors = 0;
1625
1626         return stats;
1627 }
1628
1629 static void mlx5e_set_rx_mode(struct net_device *dev)
1630 {
1631         struct mlx5e_priv *priv = netdev_priv(dev);
1632
1633         schedule_work(&priv->set_rx_mode_work);
1634 }
1635
1636 static int mlx5e_set_mac(struct net_device *netdev, void *addr)
1637 {
1638         struct mlx5e_priv *priv = netdev_priv(netdev);
1639         struct sockaddr *saddr = addr;
1640
1641         if (!is_valid_ether_addr(saddr->sa_data))
1642                 return -EADDRNOTAVAIL;
1643
1644         netif_addr_lock_bh(netdev);
1645         ether_addr_copy(netdev->dev_addr, saddr->sa_data);
1646         netif_addr_unlock_bh(netdev);
1647
1648         schedule_work(&priv->set_rx_mode_work);
1649
1650         return 0;
1651 }
1652
1653 static int mlx5e_set_features(struct net_device *netdev,
1654                               netdev_features_t features)
1655 {
1656         struct mlx5e_priv *priv = netdev_priv(netdev);
1657         netdev_features_t changes = features ^ netdev->features;
1658         struct mlx5e_params new_params;
1659         bool update_params = false;
1660
1661         mutex_lock(&priv->state_lock);
1662         new_params = priv->params;
1663
1664         if (changes & NETIF_F_LRO) {
1665                 new_params.lro_en = !!(features & NETIF_F_LRO);
1666                 update_params = true;
1667         }
1668
1669         if (update_params)
1670                 mlx5e_update_priv_params(priv, &new_params);
1671
1672         if (changes & NETIF_F_HW_VLAN_CTAG_FILTER) {
1673                 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
1674                         mlx5e_enable_vlan_filter(priv);
1675                 else
1676                         mlx5e_disable_vlan_filter(priv);
1677         }
1678
1679         mutex_unlock(&priv->state_lock);
1680
1681         return 0;
1682 }
1683
1684 static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu)
1685 {
1686         struct mlx5e_priv *priv = netdev_priv(netdev);
1687         struct mlx5_core_dev *mdev = priv->mdev;
1688         int max_mtu;
1689         int err;
1690
1691         mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
1692
1693         if (new_mtu > max_mtu) {
1694                 netdev_err(netdev,
1695                            "%s: Bad MTU (%d) > (%d) Max\n",
1696                            __func__, new_mtu, max_mtu);
1697                 return -EINVAL;
1698         }
1699
1700         mutex_lock(&priv->state_lock);
1701         netdev->mtu = new_mtu;
1702         err = mlx5e_update_priv_params(priv, &priv->params);
1703         mutex_unlock(&priv->state_lock);
1704
1705         return err;
1706 }
1707
1708 static struct net_device_ops mlx5e_netdev_ops = {
1709         .ndo_open                = mlx5e_open,
1710         .ndo_stop                = mlx5e_close,
1711         .ndo_start_xmit          = mlx5e_xmit,
1712         .ndo_get_stats64         = mlx5e_get_stats,
1713         .ndo_set_rx_mode         = mlx5e_set_rx_mode,
1714         .ndo_set_mac_address     = mlx5e_set_mac,
1715         .ndo_vlan_rx_add_vid     = mlx5e_vlan_rx_add_vid,
1716         .ndo_vlan_rx_kill_vid    = mlx5e_vlan_rx_kill_vid,
1717         .ndo_set_features        = mlx5e_set_features,
1718         .ndo_change_mtu          = mlx5e_change_mtu,
1719 };
1720
1721 static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
1722 {
1723         if (MLX5_CAP_GEN(mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
1724                 return -ENOTSUPP;
1725         if (!MLX5_CAP_GEN(mdev, eth_net_offloads) ||
1726             !MLX5_CAP_GEN(mdev, nic_flow_table) ||
1727             !MLX5_CAP_ETH(mdev, csum_cap) ||
1728             !MLX5_CAP_ETH(mdev, max_lso_cap) ||
1729             !MLX5_CAP_ETH(mdev, vlan_cap) ||
1730             !MLX5_CAP_ETH(mdev, rss_ind_tbl_cap) ||
1731             MLX5_CAP_FLOWTABLE(mdev,
1732                                flow_table_properties_nic_receive.max_ft_level)
1733                                < 3) {
1734                 mlx5_core_warn(mdev,
1735                                "Not creating net device, some required device capabilities are missing\n");
1736                 return -ENOTSUPP;
1737         }
1738         return 0;
1739 }
1740
1741 u16 mlx5e_get_max_inline_cap(struct mlx5_core_dev *mdev)
1742 {
1743         int bf_buf_size = (1 << MLX5_CAP_GEN(mdev, log_bf_reg_size)) / 2;
1744
1745         return bf_buf_size -
1746                sizeof(struct mlx5e_tx_wqe) +
1747                2 /*sizeof(mlx5e_tx_wqe.inline_hdr_start)*/;
1748 }
1749
1750 static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
1751                                     struct net_device *netdev,
1752                                     int num_comp_vectors)
1753 {
1754         struct mlx5e_priv *priv = netdev_priv(netdev);
1755
1756         priv->params.log_sq_size           =
1757                 MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
1758         priv->params.log_rq_size           =
1759                 MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE;
1760         priv->params.rx_cq_moderation_usec =
1761                 MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC;
1762         priv->params.rx_cq_moderation_pkts =
1763                 MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS;
1764         priv->params.tx_cq_moderation_usec =
1765                 MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC;
1766         priv->params.tx_cq_moderation_pkts =
1767                 MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS;
1768         priv->params.tx_max_inline         = mlx5e_get_max_inline_cap(mdev);
1769         priv->params.min_rx_wqes           =
1770                 MLX5E_PARAMS_DEFAULT_MIN_RX_WQES;
1771         priv->params.rx_hash_log_tbl_sz    =
1772                 (order_base_2(num_comp_vectors) >
1773                  MLX5E_PARAMS_DEFAULT_RX_HASH_LOG_TBL_SZ) ?
1774                 order_base_2(num_comp_vectors)           :
1775                 MLX5E_PARAMS_DEFAULT_RX_HASH_LOG_TBL_SZ;
1776         priv->params.num_tc                = 1;
1777         priv->params.default_vlan_prio     = 0;
1778         priv->params.rss_hfunc             = ETH_RSS_HASH_XOR;
1779
1780         priv->params.lro_en = false && !!MLX5_CAP_ETH(priv->mdev, lro_cap);
1781         priv->params.lro_wqe_sz            =
1782                 MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
1783
1784         priv->mdev                         = mdev;
1785         priv->netdev                       = netdev;
1786         priv->params.num_channels          = num_comp_vectors;
1787         priv->default_vlan_prio            = priv->params.default_vlan_prio;
1788
1789         spin_lock_init(&priv->async_events_spinlock);
1790         mutex_init(&priv->state_lock);
1791
1792         INIT_WORK(&priv->update_carrier_work, mlx5e_update_carrier_work);
1793         INIT_WORK(&priv->set_rx_mode_work, mlx5e_set_rx_mode_work);
1794         INIT_DELAYED_WORK(&priv->update_stats_work, mlx5e_update_stats_work);
1795 }
1796
1797 static void mlx5e_set_netdev_dev_addr(struct net_device *netdev)
1798 {
1799         struct mlx5e_priv *priv = netdev_priv(netdev);
1800
1801         mlx5_query_nic_vport_mac_address(priv->mdev, netdev->dev_addr);
1802 }
1803
1804 static void mlx5e_build_netdev(struct net_device *netdev)
1805 {
1806         struct mlx5e_priv *priv = netdev_priv(netdev);
1807         struct mlx5_core_dev *mdev = priv->mdev;
1808
1809         SET_NETDEV_DEV(netdev, &mdev->pdev->dev);
1810
1811         if (priv->params.num_tc > 1)
1812                 mlx5e_netdev_ops.ndo_select_queue = mlx5e_select_queue;
1813
1814         netdev->netdev_ops        = &mlx5e_netdev_ops;
1815         netdev->watchdog_timeo    = 15 * HZ;
1816
1817         netdev->ethtool_ops       = &mlx5e_ethtool_ops;
1818
1819         netdev->vlan_features    |= NETIF_F_SG;
1820         netdev->vlan_features    |= NETIF_F_IP_CSUM;
1821         netdev->vlan_features    |= NETIF_F_IPV6_CSUM;
1822         netdev->vlan_features    |= NETIF_F_GRO;
1823         netdev->vlan_features    |= NETIF_F_TSO;
1824         netdev->vlan_features    |= NETIF_F_TSO6;
1825         netdev->vlan_features    |= NETIF_F_RXCSUM;
1826         netdev->vlan_features    |= NETIF_F_RXHASH;
1827
1828         if (!!MLX5_CAP_ETH(mdev, lro_cap))
1829                 netdev->vlan_features    |= NETIF_F_LRO;
1830
1831         netdev->hw_features       = netdev->vlan_features;
1832         netdev->hw_features      |= NETIF_F_HW_VLAN_CTAG_RX;
1833         netdev->hw_features      |= NETIF_F_HW_VLAN_CTAG_FILTER;
1834
1835         netdev->features          = netdev->hw_features;
1836         if (!priv->params.lro_en)
1837                 netdev->features  &= ~NETIF_F_LRO;
1838
1839         netdev->features         |= NETIF_F_HIGHDMA;
1840
1841         netdev->priv_flags       |= IFF_UNICAST_FLT;
1842
1843         mlx5e_set_netdev_dev_addr(netdev);
1844 }
1845
1846 static int mlx5e_create_mkey(struct mlx5e_priv *priv, u32 pdn,
1847                              struct mlx5_core_mr *mr)
1848 {
1849         struct mlx5_core_dev *mdev = priv->mdev;
1850         struct mlx5_create_mkey_mbox_in *in;
1851         int err;
1852
1853         in = mlx5_vzalloc(sizeof(*in));
1854         if (!in)
1855                 return -ENOMEM;
1856
1857         in->seg.flags = MLX5_PERM_LOCAL_WRITE |
1858                         MLX5_PERM_LOCAL_READ  |
1859                         MLX5_ACCESS_MODE_PA;
1860         in->seg.flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
1861         in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
1862
1863         err = mlx5_core_create_mkey(mdev, mr, in, sizeof(*in), NULL, NULL,
1864                                     NULL);
1865
1866         kvfree(in);
1867
1868         return err;
1869 }
1870
1871 static void *mlx5e_create_netdev(struct mlx5_core_dev *mdev)
1872 {
1873         struct net_device *netdev;
1874         struct mlx5e_priv *priv;
1875         int ncv = mdev->priv.eq_table.num_comp_vectors;
1876         int err;
1877
1878         if (mlx5e_check_required_hca_cap(mdev))
1879                 return NULL;
1880
1881         netdev = alloc_etherdev_mqs(sizeof(struct mlx5e_priv), ncv, ncv);
1882         if (!netdev) {
1883                 mlx5_core_err(mdev, "alloc_etherdev_mqs() failed\n");
1884                 return NULL;
1885         }
1886
1887         mlx5e_build_netdev_priv(mdev, netdev, ncv);
1888         mlx5e_build_netdev(netdev);
1889
1890         netif_carrier_off(netdev);
1891
1892         priv = netdev_priv(netdev);
1893
1894         err = mlx5_alloc_map_uar(mdev, &priv->cq_uar);
1895         if (err) {
1896                 mlx5_core_err(mdev, "alloc_map uar failed, %d\n", err);
1897                 goto err_free_netdev;
1898         }
1899
1900         err = mlx5_core_alloc_pd(mdev, &priv->pdn);
1901         if (err) {
1902                 mlx5_core_err(mdev, "alloc pd failed, %d\n", err);
1903                 goto err_unmap_free_uar;
1904         }
1905
1906         err = mlx5_alloc_transport_domain(mdev, &priv->tdn);
1907         if (err) {
1908                 mlx5_core_err(mdev, "alloc td failed, %d\n", err);
1909                 goto err_dealloc_pd;
1910         }
1911
1912         err = mlx5e_create_mkey(priv, priv->pdn, &priv->mr);
1913         if (err) {
1914                 mlx5_core_err(mdev, "create mkey failed, %d\n", err);
1915                 goto err_dealloc_transport_domain;
1916         }
1917
1918         err = register_netdev(netdev);
1919         if (err) {
1920                 mlx5_core_err(mdev, "register_netdev failed, %d\n", err);
1921                 goto err_destroy_mkey;
1922         }
1923
1924         mlx5e_enable_async_events(priv);
1925
1926         return priv;
1927
1928 err_destroy_mkey:
1929         mlx5_core_destroy_mkey(mdev, &priv->mr);
1930
1931 err_dealloc_transport_domain:
1932         mlx5_dealloc_transport_domain(mdev, priv->tdn);
1933
1934 err_dealloc_pd:
1935         mlx5_core_dealloc_pd(mdev, priv->pdn);
1936
1937 err_unmap_free_uar:
1938         mlx5_unmap_free_uar(mdev, &priv->cq_uar);
1939
1940 err_free_netdev:
1941         free_netdev(netdev);
1942
1943         return NULL;
1944 }
1945
1946 static void mlx5e_destroy_netdev(struct mlx5_core_dev *mdev, void *vpriv)
1947 {
1948         struct mlx5e_priv *priv = vpriv;
1949         struct net_device *netdev = priv->netdev;
1950
1951         unregister_netdev(netdev);
1952         mlx5_core_destroy_mkey(priv->mdev, &priv->mr);
1953         mlx5_dealloc_transport_domain(priv->mdev, priv->tdn);
1954         mlx5_core_dealloc_pd(priv->mdev, priv->pdn);
1955         mlx5_unmap_free_uar(priv->mdev, &priv->cq_uar);
1956         mlx5e_disable_async_events(priv);
1957         flush_scheduled_work();
1958         free_netdev(netdev);
1959 }
1960
1961 static void *mlx5e_get_netdev(void *vpriv)
1962 {
1963         struct mlx5e_priv *priv = vpriv;
1964
1965         return priv->netdev;
1966 }
1967
1968 static struct mlx5_interface mlx5e_interface = {
1969         .add       = mlx5e_create_netdev,
1970         .remove    = mlx5e_destroy_netdev,
1971         .event     = mlx5e_async_event,
1972         .protocol  = MLX5_INTERFACE_PROTOCOL_ETH,
1973         .get_dev   = mlx5e_get_netdev,
1974 };
1975
1976 void mlx5e_init(void)
1977 {
1978         mlx5_register_interface(&mlx5e_interface);
1979 }
1980
1981 void mlx5e_cleanup(void)
1982 {
1983         mlx5_unregister_interface(&mlx5e_interface);
1984 }