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

   1 /*
   2  * Copyright (c) 2015-2016, 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 <net/tc_act/tc_gact.h>
  34 #include <net/pkt_cls.h>
  35 #include <linux/mlx5/fs.h>
  36 #include <net/vxlan.h>
  37 #include <linux/bpf.h>
  38 #include "eswitch.h"
  39 #include "en.h"
  40 #include "en_tc.h"
  41 #include "en_rep.h"
  42 #include "en_accel/ipsec.h"
  43 #include "en_accel/ipsec_rxtx.h"
  44 #include "accel/ipsec.h"
  45 #include "vxlan.h"
  46
  47 struct mlx5e_rq_param {
  48         u32                     rqc[MLX5_ST_SZ_DW(rqc)];
  49         struct mlx5_wq_param    wq;
  50 };
  51
  52 struct mlx5e_sq_param {
  53         u32                        sqc[MLX5_ST_SZ_DW(sqc)];
  54         struct mlx5_wq_param       wq;
  55 };
  56
  57 struct mlx5e_cq_param {
  58         u32                        cqc[MLX5_ST_SZ_DW(cqc)];
  59         struct mlx5_wq_param       wq;
  60         u16                        eq_ix;
  61         u8                         cq_period_mode;
  62 };
  63
  64 struct mlx5e_channel_param {
  65         struct mlx5e_rq_param      rq;
  66         struct mlx5e_sq_param      sq;
  67         struct mlx5e_sq_param      xdp_sq;
  68         struct mlx5e_sq_param      icosq;
  69         struct mlx5e_cq_param      rx_cq;
  70         struct mlx5e_cq_param      tx_cq;
  71         struct mlx5e_cq_param      icosq_cq;
  72 };
  73
  74 bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev)
  75 {
  76         bool striding_rq_umr = MLX5_CAP_GEN(mdev, striding_rq) &&
  77                 MLX5_CAP_GEN(mdev, umr_ptr_rlky) &&
  78                 MLX5_CAP_ETH(mdev, reg_umr_sq);
  79         u16 max_wqe_sz_cap = MLX5_CAP_GEN(mdev, max_wqe_sz_sq);
  80         bool inline_umr = MLX5E_UMR_WQE_INLINE_SZ <= max_wqe_sz_cap;
  81
  82         if (!striding_rq_umr)
  83                 return false;
  84         if (!inline_umr) {
  85                 mlx5_core_warn(mdev, "Cannot support Striding RQ: UMR WQE size (%d) exceeds maximum supported (%d).\n",
  86                                (int)MLX5E_UMR_WQE_INLINE_SZ, max_wqe_sz_cap);
  87                 return false;
  88         }
  89         return true;
  90 }
  91
  92 static u32 mlx5e_mpwqe_get_linear_frag_sz(struct mlx5e_params *params)
  93 {
  94         if (!params->xdp_prog) {
  95                 u16 hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
  96                 u16 rq_headroom = MLX5_RX_HEADROOM + NET_IP_ALIGN;
  97
  98                 return MLX5_SKB_FRAG_SZ(rq_headroom + hw_mtu);
  99         }
 100
 101         return PAGE_SIZE;
 102 }
 103
 104 static u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params)
 105 {
 106         u32 linear_frag_sz = mlx5e_mpwqe_get_linear_frag_sz(params);
 107
 108         return MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(linear_frag_sz);
 109 }
 110
 111 static bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
 112                                          struct mlx5e_params *params)
 113 {
 114         u32 frag_sz = mlx5e_mpwqe_get_linear_frag_sz(params);
 115         s8 signed_log_num_strides_param;
 116         u8 log_num_strides;
 117
 118         if (params->lro_en || frag_sz > PAGE_SIZE)
 119                 return false;
 120
 121         if (MLX5_CAP_GEN(mdev, ext_stride_num_range))
 122                 return true;
 123
 124         log_num_strides = MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(frag_sz);
 125         signed_log_num_strides_param =
 126                 (s8)log_num_strides - MLX5_MPWQE_LOG_NUM_STRIDES_BASE;
 127
 128         return signed_log_num_strides_param >= 0;
 129 }
 130
 131 static u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params)
 132 {
 133         if (params->log_rq_mtu_frames <
 134             mlx5e_mpwqe_log_pkts_per_wqe(params) + MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW)
 135                 return MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW;
 136
 137         return params->log_rq_mtu_frames - mlx5e_mpwqe_log_pkts_per_wqe(params);
 138 }
 139
 140 static u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
 141                                           struct mlx5e_params *params)
 142 {
 143         if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params))
 144                 return order_base_2(mlx5e_mpwqe_get_linear_frag_sz(params));
 145
 146         return MLX5E_MPWQE_STRIDE_SZ(mdev,
 147                 MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS));
 148 }
 149
 150 static u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
 151                                           struct mlx5e_params *params)
 152 {
 153         return MLX5_MPWRQ_LOG_WQE_SZ -
 154                 mlx5e_mpwqe_get_log_stride_size(mdev, params);
 155 }
 156
 157 static u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
 158                                  struct mlx5e_params *params)
 159 {
 160         u16 linear_rq_headroom = params->xdp_prog ?
 161                 XDP_PACKET_HEADROOM : MLX5_RX_HEADROOM;
 162
 163         linear_rq_headroom += NET_IP_ALIGN;
 164
 165         if (params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST)
 166                 return linear_rq_headroom;
 167
 168         if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params))
 169                 return linear_rq_headroom;
 170
 171         return 0;
 172 }
 173
 174 void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev,
 175                                struct mlx5e_params *params)
 176 {
 177         params->lro_wqe_sz = MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
 178         params->log_rq_mtu_frames = is_kdump_kernel() ?
 179                 MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE :
 180                 MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE;
 181         switch (params->rq_wq_type) {
 182         case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
 183                 break;
 184         default: /* MLX5_WQ_TYPE_LINKED_LIST */
 185                 /* Extra room needed for build_skb */
 186                 params->lro_wqe_sz -= mlx5e_get_rq_headroom(mdev, params) +
 187                         SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 188         }
 189
 190         mlx5_core_info(mdev, "MLX5E: StrdRq(%d) RqSz(%ld) StrdSz(%ld) RxCqeCmprss(%d)\n",
 191                        params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ,
 192                        params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ ?
 193                        BIT(mlx5e_mpwqe_get_log_rq_size(params)) :
 194                        BIT(params->log_rq_mtu_frames),
 195                        BIT(mlx5e_mpwqe_get_log_stride_size(mdev, params)),
 196                        MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS));
 197 }
 198
 199 bool mlx5e_striding_rq_possible(struct mlx5_core_dev *mdev,
 200                                 struct mlx5e_params *params)
 201 {
 202         return mlx5e_check_fragmented_striding_rq_cap(mdev) &&
 203                 !MLX5_IPSEC_DEV(mdev) &&
 204                 !(params->xdp_prog && !mlx5e_rx_mpwqe_is_linear_skb(mdev, params));
 205 }
 206
 207 void mlx5e_set_rq_type(struct mlx5_core_dev *mdev, struct mlx5e_params *params)
 208 {
 209         params->rq_wq_type = mlx5e_striding_rq_possible(mdev, params) &&
 210                 MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ) ?
 211                 MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :
 212                 MLX5_WQ_TYPE_LINKED_LIST;
 213 }
 214
 215 static void mlx5e_update_carrier(struct mlx5e_priv *priv)
 216 {
 217         struct mlx5_core_dev *mdev = priv->mdev;
 218         u8 port_state;
 219
 220         port_state = mlx5_query_vport_state(mdev,
 221                                             MLX5_QUERY_VPORT_STATE_IN_OP_MOD_VNIC_VPORT,
 222                                             0);
 223
 224         if (port_state == VPORT_STATE_UP) {
 225                 netdev_info(priv->netdev, "Link up\n");
 226                 netif_carrier_on(priv->netdev);
 227         } else {
 228                 netdev_info(priv->netdev, "Link down\n");
 229                 netif_carrier_off(priv->netdev);
 230         }
 231 }
 232
 233 static void mlx5e_update_carrier_work(struct work_struct *work)
 234 {
 235         struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
 236                                                update_carrier_work);
 237
 238         mutex_lock(&priv->state_lock);
 239         if (test_bit(MLX5E_STATE_OPENED, &priv->state))
 240                 if (priv->profile->update_carrier)
 241                         priv->profile->update_carrier(priv);
 242         mutex_unlock(&priv->state_lock);
 243 }
 244
 245 void mlx5e_update_stats(struct mlx5e_priv *priv)
 246 {
 247         int i;
 248
 249         for (i = mlx5e_num_stats_grps - 1; i >= 0; i--)
 250                 if (mlx5e_stats_grps[i].update_stats)
 251                         mlx5e_stats_grps[i].update_stats(priv);
 252 }
 253
 254 static void mlx5e_update_ndo_stats(struct mlx5e_priv *priv)
 255 {
 256         int i;
 257
 258         for (i = mlx5e_num_stats_grps - 1; i >= 0; i--)
 259                 if (mlx5e_stats_grps[i].update_stats_mask &
 260                     MLX5E_NDO_UPDATE_STATS)
 261                         mlx5e_stats_grps[i].update_stats(priv);
 262 }
 263
 264 void mlx5e_update_stats_work(struct work_struct *work)
 265 {
 266         struct delayed_work *dwork = to_delayed_work(work);
 267         struct mlx5e_priv *priv = container_of(dwork, struct mlx5e_priv,
 268                                                update_stats_work);
 269         mutex_lock(&priv->state_lock);
 270         if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {
 271                 priv->profile->update_stats(priv);
 272                 queue_delayed_work(priv->wq, dwork,
 273                                    msecs_to_jiffies(MLX5E_UPDATE_STATS_INTERVAL));
 274         }
 275         mutex_unlock(&priv->state_lock);
 276 }
 277
 278 static void mlx5e_async_event(struct mlx5_core_dev *mdev, void *vpriv,
 279                               enum mlx5_dev_event event, unsigned long param)
 280 {
 281         struct mlx5e_priv *priv = vpriv;
 282
 283         if (!test_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLED, &priv->state))
 284                 return;
 285
 286         switch (event) {
 287         case MLX5_DEV_EVENT_PORT_UP:
 288         case MLX5_DEV_EVENT_PORT_DOWN:
 289                 queue_work(priv->wq, &priv->update_carrier_work);
 290                 break;
 291         default:
 292                 break;
 293         }
 294 }
 295
 296 static void mlx5e_enable_async_events(struct mlx5e_priv *priv)
 297 {
 298         set_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLED, &priv->state);
 299 }
 300
 301 static void mlx5e_disable_async_events(struct mlx5e_priv *priv)
 302 {
 303         clear_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLED, &priv->state);
 304         synchronize_irq(pci_irq_vector(priv->mdev->pdev, MLX5_EQ_VEC_ASYNC));
 305 }
 306
 307 static inline void mlx5e_build_umr_wqe(struct mlx5e_rq *rq,
 308                                        struct mlx5e_icosq *sq,
 309                                        struct mlx5e_umr_wqe *wqe)
 310 {
 311         struct mlx5_wqe_ctrl_seg      *cseg = &wqe->ctrl;
 312         struct mlx5_wqe_umr_ctrl_seg *ucseg = &wqe->uctrl;
 313         u8 ds_cnt = DIV_ROUND_UP(MLX5E_UMR_WQE_INLINE_SZ, MLX5_SEND_WQE_DS);
 314
 315         cseg->qpn_ds    = cpu_to_be32((sq->sqn << MLX5_WQE_CTRL_QPN_SHIFT) |
 316                                       ds_cnt);
 317         cseg->fm_ce_se  = MLX5_WQE_CTRL_CQ_UPDATE;
 318         cseg->imm       = rq->mkey_be;
 319
 320         ucseg->flags = MLX5_UMR_TRANSLATION_OFFSET_EN | MLX5_UMR_INLINE;
 321         ucseg->xlt_octowords =
 322                 cpu_to_be16(MLX5_MTT_OCTW(MLX5_MPWRQ_PAGES_PER_WQE));
 323         ucseg->mkey_mask     = cpu_to_be64(MLX5_MKEY_MASK_FREE);
 324 }
 325
 326 static int mlx5e_rq_alloc_mpwqe_info(struct mlx5e_rq *rq,
 327                                      struct mlx5e_channel *c)
 328 {
 329         int wq_sz = mlx5_wq_ll_get_size(&rq->wq);
 330
 331         rq->mpwqe.info = kzalloc_node(wq_sz * sizeof(*rq->mpwqe.info),
 332                                       GFP_KERNEL, cpu_to_node(c->cpu));
 333         if (!rq->mpwqe.info)
 334                 return -ENOMEM;
 335
 336         mlx5e_build_umr_wqe(rq, &c->icosq, &rq->mpwqe.umr_wqe);
 337
 338         return 0;
 339 }
 340
 341 static int mlx5e_create_umr_mkey(struct mlx5_core_dev *mdev,
 342                                  u64 npages, u8 page_shift,
 343                                  struct mlx5_core_mkey *umr_mkey)
 344 {
 345         int inlen = MLX5_ST_SZ_BYTES(create_mkey_in);
 346         void *mkc;
 347         u32 *in;
 348         int err;
 349
 350         in = kvzalloc(inlen, GFP_KERNEL);
 351         if (!in)
 352                 return -ENOMEM;
 353
 354         mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
 355
 356         MLX5_SET(mkc, mkc, free, 1);
 357         MLX5_SET(mkc, mkc, umr_en, 1);
 358         MLX5_SET(mkc, mkc, lw, 1);
 359         MLX5_SET(mkc, mkc, lr, 1);
 360         MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_MTT);
 361
 362         MLX5_SET(mkc, mkc, qpn, 0xffffff);
 363         MLX5_SET(mkc, mkc, pd, mdev->mlx5e_res.pdn);
 364         MLX5_SET64(mkc, mkc, len, npages << page_shift);
 365         MLX5_SET(mkc, mkc, translations_octword_size,
 366                  MLX5_MTT_OCTW(npages));
 367         MLX5_SET(mkc, mkc, log_page_size, page_shift);
 368
 369         err = mlx5_core_create_mkey(mdev, umr_mkey, in, inlen);
 370
 371         kvfree(in);
 372         return err;
 373 }
 374
 375 static int mlx5e_create_rq_umr_mkey(struct mlx5_core_dev *mdev, struct mlx5e_rq *rq)
 376 {
 377         u64 num_mtts = MLX5E_REQUIRED_MTTS(mlx5_wq_ll_get_size(&rq->wq));
 378
 379         return mlx5e_create_umr_mkey(mdev, num_mtts, PAGE_SHIFT, &rq->umr_mkey);
 380 }
 381
 382 static inline u64 mlx5e_get_mpwqe_offset(struct mlx5e_rq *rq, u16 wqe_ix)
 383 {
 384         return (wqe_ix << MLX5E_LOG_ALIGNED_MPWQE_PPW) << PAGE_SHIFT;
 385 }
 386
 387 static int mlx5e_alloc_rq(struct mlx5e_channel *c,
 388                           struct mlx5e_params *params,
 389                           struct mlx5e_rq_param *rqp,
 390                           struct mlx5e_rq *rq)
 391 {
 392         struct mlx5_core_dev *mdev = c->mdev;
 393         void *rqc = rqp->rqc;
 394         void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
 395         u32 byte_count;
 396         int npages;
 397         int wq_sz;
 398         int err;
 399         int i;
 400
 401         rqp->wq.db_numa_node = cpu_to_node(c->cpu);
 402
 403         err = mlx5_wq_ll_create(mdev, &rqp->wq, rqc_wq, &rq->wq,
 404                                 &rq->wq_ctrl);
 405         if (err)
 406                 return err;
 407
 408         rq->wq.db = &rq->wq.db[MLX5_RCV_DBR];
 409
 410         wq_sz = mlx5_wq_ll_get_size(&rq->wq);
 411
 412         rq->wq_type = params->rq_wq_type;
 413         rq->pdev    = c->pdev;
 414         rq->netdev  = c->netdev;
 415         rq->tstamp  = c->tstamp;
 416         rq->clock   = &mdev->clock;
 417         rq->channel = c;
 418         rq->ix      = c->ix;
 419         rq->mdev    = mdev;
 420         rq->hw_mtu  = MLX5E_SW2HW_MTU(params, params->sw_mtu);
 421
 422         rq->xdp_prog = params->xdp_prog ? bpf_prog_inc(params->xdp_prog) : NULL;
 423         if (IS_ERR(rq->xdp_prog)) {
 424                 err = PTR_ERR(rq->xdp_prog);
 425                 rq->xdp_prog = NULL;
 426                 goto err_rq_wq_destroy;
 427         }
 428
 429         err = xdp_rxq_info_reg(&rq->xdp_rxq, rq->netdev, rq->ix);
 430         if (err < 0)
 431                 goto err_rq_wq_destroy;
 432
 433         rq->buff.map_dir = rq->xdp_prog ? DMA_BIDIRECTIONAL : DMA_FROM_DEVICE;
 434         rq->buff.headroom = mlx5e_get_rq_headroom(mdev, params);
 435
 436         switch (rq->wq_type) {
 437         case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
 438                 rq->post_wqes = mlx5e_post_rx_mpwqes;
 439                 rq->dealloc_wqe = mlx5e_dealloc_rx_mpwqe;
 440
 441                 rq->handle_rx_cqe = c->priv->profile->rx_handlers.handle_rx_cqe_mpwqe;
 442 #ifdef CONFIG_MLX5_EN_IPSEC
 443                 if (MLX5_IPSEC_DEV(mdev)) {
 444                         err = -EINVAL;
 445                         netdev_err(c->netdev, "MPWQE RQ with IPSec offload not supported\n");
 446                         goto err_rq_wq_destroy;
 447                 }
 448 #endif
 449                 if (!rq->handle_rx_cqe) {
 450                         err = -EINVAL;
 451                         netdev_err(c->netdev, "RX handler of MPWQE RQ is not set, err %d\n", err);
 452                         goto err_rq_wq_destroy;
 453                 }
 454
 455                 rq->mpwqe.skb_from_cqe_mpwrq =
 456                         mlx5e_rx_mpwqe_is_linear_skb(mdev, params) ?
 457                         mlx5e_skb_from_cqe_mpwrq_linear :
 458                         mlx5e_skb_from_cqe_mpwrq_nonlinear;
 459                 rq->mpwqe.log_stride_sz = mlx5e_mpwqe_get_log_stride_size(mdev, params);
 460                 rq->mpwqe.num_strides = BIT(mlx5e_mpwqe_get_log_num_strides(mdev, params));
 461
 462                 byte_count = rq->mpwqe.num_strides << rq->mpwqe.log_stride_sz;
 463
 464                 err = mlx5e_create_rq_umr_mkey(mdev, rq);
 465                 if (err)
 466                         goto err_rq_wq_destroy;
 467                 rq->mkey_be = cpu_to_be32(rq->umr_mkey.key);
 468
 469                 err = mlx5e_rq_alloc_mpwqe_info(rq, c);
 470                 if (err)
 471                         goto err_destroy_umr_mkey;
 472                 break;
 473         default: /* MLX5_WQ_TYPE_LINKED_LIST */
 474                 rq->wqe.frag_info =
 475                         kzalloc_node(wq_sz * sizeof(*rq->wqe.frag_info),
 476                                      GFP_KERNEL, cpu_to_node(c->cpu));
 477                 if (!rq->wqe.frag_info) {
 478                         err = -ENOMEM;
 479                         goto err_rq_wq_destroy;
 480                 }
 481                 rq->post_wqes = mlx5e_post_rx_wqes;
 482                 rq->dealloc_wqe = mlx5e_dealloc_rx_wqe;
 483
 484 #ifdef CONFIG_MLX5_EN_IPSEC
 485                 if (c->priv->ipsec)
 486                         rq->handle_rx_cqe = mlx5e_ipsec_handle_rx_cqe;
 487                 else
 488 #endif
 489                         rq->handle_rx_cqe = c->priv->profile->rx_handlers.handle_rx_cqe;
 490                 if (!rq->handle_rx_cqe) {
 491                         kfree(rq->wqe.frag_info);
 492                         err = -EINVAL;
 493                         netdev_err(c->netdev, "RX handler of RQ is not set, err %d\n", err);
 494                         goto err_rq_wq_destroy;
 495                 }
 496
 497                 byte_count = params->lro_en  ?
 498                                 params->lro_wqe_sz :
 499                                 MLX5E_SW2HW_MTU(params, params->sw_mtu);
 500 #ifdef CONFIG_MLX5_EN_IPSEC
 501                 if (MLX5_IPSEC_DEV(mdev))
 502                         byte_count += MLX5E_METADATA_ETHER_LEN;
 503 #endif
 504                 rq->wqe.page_reuse = !params->xdp_prog && !params->lro_en;
 505
 506                 /* calc the required page order */
 507                 rq->wqe.frag_sz = MLX5_SKB_FRAG_SZ(rq->buff.headroom + byte_count);
 508                 npages = DIV_ROUND_UP(rq->wqe.frag_sz, PAGE_SIZE);
 509                 rq->buff.page_order = order_base_2(npages);
 510
 511                 byte_count |= MLX5_HW_START_PADDING;
 512                 rq->mkey_be = c->mkey_be;
 513         }
 514
 515         for (i = 0; i < wq_sz; i++) {
 516                 struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(&rq->wq, i);
 517
 518                 if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
 519                         u64 dma_offset = mlx5e_get_mpwqe_offset(rq, i);
 520
 521                         wqe->data.addr = cpu_to_be64(dma_offset + rq->buff.headroom);
 522                 }
 523
 524                 wqe->data.byte_count = cpu_to_be32(byte_count);
 525                 wqe->data.lkey = rq->mkey_be;
 526         }
 527
 528         INIT_WORK(&rq->dim.work, mlx5e_rx_dim_work);
 529
 530         switch (params->rx_cq_moderation.cq_period_mode) {
 531         case MLX5_CQ_PERIOD_MODE_START_FROM_CQE:
 532                 rq->dim.mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE;
 533                 break;
 534         case MLX5_CQ_PERIOD_MODE_START_FROM_EQE:
 535         default:
 536                 rq->dim.mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
 537         }
 538
 539         rq->page_cache.head = 0;
 540         rq->page_cache.tail = 0;
 541
 542         return 0;
 543
 544 err_destroy_umr_mkey:
 545         mlx5_core_destroy_mkey(mdev, &rq->umr_mkey);
 546
 547 err_rq_wq_destroy:
 548         if (rq->xdp_prog)
 549                 bpf_prog_put(rq->xdp_prog);
 550         xdp_rxq_info_unreg(&rq->xdp_rxq);
 551         mlx5_wq_destroy(&rq->wq_ctrl);
 552
 553         return err;
 554 }
 555
 556 static void mlx5e_free_rq(struct mlx5e_rq *rq)
 557 {
 558         int i;
 559
 560         if (rq->xdp_prog)
 561                 bpf_prog_put(rq->xdp_prog);
 562
 563         xdp_rxq_info_unreg(&rq->xdp_rxq);
 564
 565         switch (rq->wq_type) {
 566         case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
 567                 kfree(rq->mpwqe.info);
 568                 mlx5_core_destroy_mkey(rq->mdev, &rq->umr_mkey);
 569                 break;
 570         default: /* MLX5_WQ_TYPE_LINKED_LIST */
 571                 kfree(rq->wqe.frag_info);
 572         }
 573
 574         for (i = rq->page_cache.head; i != rq->page_cache.tail;
 575              i = (i + 1) & (MLX5E_CACHE_SIZE - 1)) {
 576                 struct mlx5e_dma_info *dma_info = &rq->page_cache.page_cache[i];
 577
 578                 mlx5e_page_release(rq, dma_info, false);
 579         }
 580         mlx5_wq_destroy(&rq->wq_ctrl);
 581 }
 582
 583 static int mlx5e_create_rq(struct mlx5e_rq *rq,
 584                            struct mlx5e_rq_param *param)
 585 {
 586         struct mlx5_core_dev *mdev = rq->mdev;
 587
 588         void *in;
 589         void *rqc;
 590         void *wq;
 591         int inlen;
 592         int err;
 593
 594         inlen = MLX5_ST_SZ_BYTES(create_rq_in) +
 595                 sizeof(u64) * rq->wq_ctrl.buf.npages;
 596         in = kvzalloc(inlen, GFP_KERNEL);
 597         if (!in)
 598                 return -ENOMEM;
 599
 600         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
 601         wq  = MLX5_ADDR_OF(rqc, rqc, wq);
 602
 603         memcpy(rqc, param->rqc, sizeof(param->rqc));
 604
 605         MLX5_SET(rqc,  rqc, cqn,                rq->cq.mcq.cqn);
 606         MLX5_SET(rqc,  rqc, state,              MLX5_RQC_STATE_RST);
 607         MLX5_SET(wq,   wq,  log_wq_pg_sz,       rq->wq_ctrl.buf.page_shift -
 608                                                 MLX5_ADAPTER_PAGE_SHIFT);
 609         MLX5_SET64(wq, wq,  dbr_addr,           rq->wq_ctrl.db.dma);
 610
 611         mlx5_fill_page_array(&rq->wq_ctrl.buf,
 612                              (__be64 *)MLX5_ADDR_OF(wq, wq, pas));
 613
 614         err = mlx5_core_create_rq(mdev, in, inlen, &rq->rqn);
 615
 616         kvfree(in);
 617
 618         return err;
 619 }
 620
 621 static int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state,
 622                                  int next_state)
 623 {
 624         struct mlx5_core_dev *mdev = rq->mdev;
 625
 626         void *in;
 627         void *rqc;
 628         int inlen;
 629         int err;
 630
 631         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
 632         in = kvzalloc(inlen, GFP_KERNEL);
 633         if (!in)
 634                 return -ENOMEM;
 635
 636         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
 637
 638         MLX5_SET(modify_rq_in, in, rq_state, curr_state);
 639         MLX5_SET(rqc, rqc, state, next_state);
 640
 641         err = mlx5_core_modify_rq(mdev, rq->rqn, in, inlen);
 642
 643         kvfree(in);
 644
 645         return err;
 646 }
 647
 648 static int mlx5e_modify_rq_scatter_fcs(struct mlx5e_rq *rq, bool enable)
 649 {
 650         struct mlx5e_channel *c = rq->channel;
 651         struct mlx5e_priv *priv = c->priv;
 652         struct mlx5_core_dev *mdev = priv->mdev;
 653
 654         void *in;
 655         void *rqc;
 656         int inlen;
 657         int err;
 658
 659         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
 660         in = kvzalloc(inlen, GFP_KERNEL);
 661         if (!in)
 662                 return -ENOMEM;
 663
 664         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
 665
 666         MLX5_SET(modify_rq_in, in, rq_state, MLX5_RQC_STATE_RDY);
 667         MLX5_SET64(modify_rq_in, in, modify_bitmask,
 668                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_SCATTER_FCS);
 669         MLX5_SET(rqc, rqc, scatter_fcs, enable);
 670         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY);
 671
 672         err = mlx5_core_modify_rq(mdev, rq->rqn, in, inlen);
 673
 674         kvfree(in);
 675
 676         return err;
 677 }
 678
 679 static int mlx5e_modify_rq_vsd(struct mlx5e_rq *rq, bool vsd)
 680 {
 681         struct mlx5e_channel *c = rq->channel;
 682         struct mlx5_core_dev *mdev = c->mdev;
 683         void *in;
 684         void *rqc;
 685         int inlen;
 686         int err;
 687
 688         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
 689         in = kvzalloc(inlen, GFP_KERNEL);
 690         if (!in)
 691                 return -ENOMEM;
 692
 693         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
 694
 695         MLX5_SET(modify_rq_in, in, rq_state, MLX5_RQC_STATE_RDY);
 696         MLX5_SET64(modify_rq_in, in, modify_bitmask,
 697                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
 698         MLX5_SET(rqc, rqc, vsd, vsd);
 699         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY);
 700
 701         err = mlx5_core_modify_rq(mdev, rq->rqn, in, inlen);
 702
 703         kvfree(in);
 704
 705         return err;
 706 }
 707
 708 static void mlx5e_destroy_rq(struct mlx5e_rq *rq)
 709 {
 710         mlx5_core_destroy_rq(rq->mdev, rq->rqn);
 711 }
 712
 713 static int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq)
 714 {
 715         unsigned long exp_time = jiffies + msecs_to_jiffies(20000);
 716         struct mlx5e_channel *c = rq->channel;
 717
 718         struct mlx5_wq_ll *wq = &rq->wq;
 719         u16 min_wqes = mlx5_min_rx_wqes(rq->wq_type, mlx5_wq_ll_get_size(wq));
 720
 721         while (time_before(jiffies, exp_time)) {
 722                 if (wq->cur_sz >= min_wqes)
 723                         return 0;
 724
 725                 msleep(20);
 726         }
 727
 728         netdev_warn(c->netdev, "Failed to get min RX wqes on RQN[0x%x] wq cur_sz(%d) min_rx_wqes(%d)\n",
 729                     rq->rqn, wq->cur_sz, min_wqes);
 730         return -ETIMEDOUT;
 731 }
 732
 733 static void mlx5e_free_rx_descs(struct mlx5e_rq *rq)
 734 {
 735         struct mlx5_wq_ll *wq = &rq->wq;
 736         struct mlx5e_rx_wqe *wqe;
 737         __be16 wqe_ix_be;
 738         u16 wqe_ix;
 739
 740         /* UMR WQE (if in progress) is always at wq->head */
 741         if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ &&
 742             rq->mpwqe.umr_in_progress)
 743                 mlx5e_free_rx_mpwqe(rq, &rq->mpwqe.info[wq->head]);
 744
 745         while (!mlx5_wq_ll_is_empty(wq)) {
 746                 wqe_ix_be = *wq->tail_next;
 747                 wqe_ix    = be16_to_cpu(wqe_ix_be);
 748                 wqe       = mlx5_wq_ll_get_wqe(&rq->wq, wqe_ix);
 749                 rq->dealloc_wqe(rq, wqe_ix);
 750                 mlx5_wq_ll_pop(&rq->wq, wqe_ix_be,
 751                                &wqe->next.next_wqe_index);
 752         }
 753
 754         if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST && rq->wqe.page_reuse) {
 755                 /* Clean outstanding pages on handled WQEs that decided to do page-reuse,
 756                  * but yet to be re-posted.
 757                  */
 758                 int wq_sz = mlx5_wq_ll_get_size(&rq->wq);
 759
 760                 for (wqe_ix = 0; wqe_ix < wq_sz; wqe_ix++)
 761                         rq->dealloc_wqe(rq, wqe_ix);
 762         }
 763 }
 764
 765 static int mlx5e_open_rq(struct mlx5e_channel *c,
 766                          struct mlx5e_params *params,
 767                          struct mlx5e_rq_param *param,
 768                          struct mlx5e_rq *rq)
 769 {
 770         int err;
 771
 772         err = mlx5e_alloc_rq(c, params, param, rq);
 773         if (err)
 774                 return err;
 775
 776         err = mlx5e_create_rq(rq, param);
 777         if (err)
 778                 goto err_free_rq;
 779
 780         err = mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
 781         if (err)
 782                 goto err_destroy_rq;
 783
 784         if (params->rx_dim_enabled)
 785                 c->rq.state |= BIT(MLX5E_RQ_STATE_AM);
 786
 787         return 0;
 788
 789 err_destroy_rq:
 790         mlx5e_destroy_rq(rq);
 791 err_free_rq:
 792         mlx5e_free_rq(rq);
 793
 794         return err;
 795 }
 796
 797 static void mlx5e_activate_rq(struct mlx5e_rq *rq)
 798 {
 799         struct mlx5e_icosq *sq = &rq->channel->icosq;
 800         u16 pi = sq->pc & sq->wq.sz_m1;
 801         struct mlx5e_tx_wqe *nopwqe;
 802
 803         set_bit(MLX5E_RQ_STATE_ENABLED, &rq->state);
 804         sq->db.ico_wqe[pi].opcode     = MLX5_OPCODE_NOP;
 805         nopwqe = mlx5e_post_nop(&sq->wq, sq->sqn, &sq->pc);
 806         mlx5e_notify_hw(&sq->wq, sq->pc, sq->uar_map, &nopwqe->ctrl);
 807 }
 808
 809 static void mlx5e_deactivate_rq(struct mlx5e_rq *rq)
 810 {
 811         clear_bit(MLX5E_RQ_STATE_ENABLED, &rq->state);
 812         napi_synchronize(&rq->channel->napi); /* prevent mlx5e_post_rx_wqes */
 813 }
 814
 815 static void mlx5e_close_rq(struct mlx5e_rq *rq)
 816 {
 817         cancel_work_sync(&rq->dim.work);
 818         mlx5e_destroy_rq(rq);
 819         mlx5e_free_rx_descs(rq);
 820         mlx5e_free_rq(rq);
 821 }
 822
 823 static void mlx5e_free_xdpsq_db(struct mlx5e_xdpsq *sq)
 824 {
 825         kfree(sq->db.di);
 826 }
 827
 828 static int mlx5e_alloc_xdpsq_db(struct mlx5e_xdpsq *sq, int numa)
 829 {
 830         int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
 831
 832         sq->db.di = kzalloc_node(sizeof(*sq->db.di) * wq_sz,
 833                                      GFP_KERNEL, numa);
 834         if (!sq->db.di) {
 835                 mlx5e_free_xdpsq_db(sq);
 836                 return -ENOMEM;
 837         }
 838
 839         return 0;
 840 }
 841
 842 static int mlx5e_alloc_xdpsq(struct mlx5e_channel *c,
 843                              struct mlx5e_params *params,
 844                              struct mlx5e_sq_param *param,
 845                              struct mlx5e_xdpsq *sq)
 846 {
 847         void *sqc_wq               = MLX5_ADDR_OF(sqc, param->sqc, wq);
 848         struct mlx5_core_dev *mdev = c->mdev;
 849         int err;
 850
 851         sq->pdev      = c->pdev;
 852         sq->mkey_be   = c->mkey_be;
 853         sq->channel   = c;
 854         sq->uar_map   = mdev->mlx5e_res.bfreg.map;
 855         sq->min_inline_mode = params->tx_min_inline_mode;
 856
 857         param->wq.db_numa_node = cpu_to_node(c->cpu);
 858         err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, &sq->wq, &sq->wq_ctrl);
 859         if (err)
 860                 return err;
 861         sq->wq.db = &sq->wq.db[MLX5_SND_DBR];
 862
 863         err = mlx5e_alloc_xdpsq_db(sq, cpu_to_node(c->cpu));
 864         if (err)
 865                 goto err_sq_wq_destroy;
 866
 867         return 0;
 868
 869 err_sq_wq_destroy:
 870         mlx5_wq_destroy(&sq->wq_ctrl);
 871
 872         return err;
 873 }
 874
 875 static void mlx5e_free_xdpsq(struct mlx5e_xdpsq *sq)
 876 {
 877         mlx5e_free_xdpsq_db(sq);
 878         mlx5_wq_destroy(&sq->wq_ctrl);
 879 }
 880
 881 static void mlx5e_free_icosq_db(struct mlx5e_icosq *sq)
 882 {
 883         kfree(sq->db.ico_wqe);
 884 }
 885
 886 static int mlx5e_alloc_icosq_db(struct mlx5e_icosq *sq, int numa)
 887 {
 888         u8 wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
 889
 890         sq->db.ico_wqe = kzalloc_node(sizeof(*sq->db.ico_wqe) * wq_sz,
 891                                       GFP_KERNEL, numa);
 892         if (!sq->db.ico_wqe)
 893                 return -ENOMEM;
 894
 895         return 0;
 896 }
 897
 898 static int mlx5e_alloc_icosq(struct mlx5e_channel *c,
 899                              struct mlx5e_sq_param *param,
 900                              struct mlx5e_icosq *sq)
 901 {
 902         void *sqc_wq               = MLX5_ADDR_OF(sqc, param->sqc, wq);
 903         struct mlx5_core_dev *mdev = c->mdev;
 904         int err;
 905
 906         sq->channel   = c;
 907         sq->uar_map   = mdev->mlx5e_res.bfreg.map;
 908
 909         param->wq.db_numa_node = cpu_to_node(c->cpu);
 910         err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, &sq->wq, &sq->wq_ctrl);
 911         if (err)
 912                 return err;
 913         sq->wq.db = &sq->wq.db[MLX5_SND_DBR];
 914
 915         err = mlx5e_alloc_icosq_db(sq, cpu_to_node(c->cpu));
 916         if (err)
 917                 goto err_sq_wq_destroy;
 918
 919         sq->edge = (sq->wq.sz_m1 + 1) - MLX5E_ICOSQ_MAX_WQEBBS;
 920
 921         return 0;
 922
 923 err_sq_wq_destroy:
 924         mlx5_wq_destroy(&sq->wq_ctrl);
 925
 926         return err;
 927 }
 928
 929 static void mlx5e_free_icosq(struct mlx5e_icosq *sq)
 930 {
 931         mlx5e_free_icosq_db(sq);
 932         mlx5_wq_destroy(&sq->wq_ctrl);
 933 }
 934
 935 static void mlx5e_free_txqsq_db(struct mlx5e_txqsq *sq)
 936 {
 937         kfree(sq->db.wqe_info);
 938         kfree(sq->db.dma_fifo);
 939 }
 940
 941 static int mlx5e_alloc_txqsq_db(struct mlx5e_txqsq *sq, int numa)
 942 {
 943         int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
 944         int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS;
 945
 946         sq->db.dma_fifo = kzalloc_node(df_sz * sizeof(*sq->db.dma_fifo),
 947                                            GFP_KERNEL, numa);
 948         sq->db.wqe_info = kzalloc_node(wq_sz * sizeof(*sq->db.wqe_info),
 949                                            GFP_KERNEL, numa);
 950         if (!sq->db.dma_fifo || !sq->db.wqe_info) {
 951                 mlx5e_free_txqsq_db(sq);
 952                 return -ENOMEM;
 953         }
 954
 955         sq->dma_fifo_mask = df_sz - 1;
 956
 957         return 0;
 958 }
 959
 960 static void mlx5e_sq_recover(struct work_struct *work);
 961 static int mlx5e_alloc_txqsq(struct mlx5e_channel *c,
 962                              int txq_ix,
 963                              struct mlx5e_params *params,
 964                              struct mlx5e_sq_param *param,
 965                              struct mlx5e_txqsq *sq)
 966 {
 967         void *sqc_wq               = MLX5_ADDR_OF(sqc, param->sqc, wq);
 968         struct mlx5_core_dev *mdev = c->mdev;
 969         int err;
 970
 971         sq->pdev      = c->pdev;
 972         sq->tstamp    = c->tstamp;
 973         sq->clock     = &mdev->clock;
 974         sq->mkey_be   = c->mkey_be;
 975         sq->channel   = c;
 976         sq->txq_ix    = txq_ix;
 977         sq->uar_map   = mdev->mlx5e_res.bfreg.map;
 978         sq->min_inline_mode = params->tx_min_inline_mode;
 979         INIT_WORK(&sq->recover.recover_work, mlx5e_sq_recover);
 980         if (MLX5_IPSEC_DEV(c->priv->mdev))
 981                 set_bit(MLX5E_SQ_STATE_IPSEC, &sq->state);
 982
 983         param->wq.db_numa_node = cpu_to_node(c->cpu);
 984         err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, &sq->wq, &sq->wq_ctrl);
 985         if (err)
 986                 return err;
 987         sq->wq.db    = &sq->wq.db[MLX5_SND_DBR];
 988
 989         err = mlx5e_alloc_txqsq_db(sq, cpu_to_node(c->cpu));
 990         if (err)
 991                 goto err_sq_wq_destroy;
 992
 993         sq->edge = (sq->wq.sz_m1 + 1) - MLX5_SEND_WQE_MAX_WQEBBS;
 994
 995         return 0;
 996
 997 err_sq_wq_destroy:
 998         mlx5_wq_destroy(&sq->wq_ctrl);
 999
1000         return err;
1001 }
1002
1003 static void mlx5e_free_txqsq(struct mlx5e_txqsq *sq)
1004 {
1005         mlx5e_free_txqsq_db(sq);
1006         mlx5_wq_destroy(&sq->wq_ctrl);
1007 }
1008
1009 struct mlx5e_create_sq_param {
1010         struct mlx5_wq_ctrl        *wq_ctrl;
1011         u32                         cqn;
1012         u32                         tisn;
1013         u8                          tis_lst_sz;
1014         u8                          min_inline_mode;
1015 };
1016
1017 static int mlx5e_create_sq(struct mlx5_core_dev *mdev,
1018                            struct mlx5e_sq_param *param,
1019                            struct mlx5e_create_sq_param *csp,
1020                            u32 *sqn)
1021 {
1022         void *in;
1023         void *sqc;
1024         void *wq;
1025         int inlen;
1026         int err;
1027
1028         inlen = MLX5_ST_SZ_BYTES(create_sq_in) +
1029                 sizeof(u64) * csp->wq_ctrl->buf.npages;
1030         in = kvzalloc(inlen, GFP_KERNEL);
1031         if (!in)
1032                 return -ENOMEM;
1033
1034         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1035         wq = MLX5_ADDR_OF(sqc, sqc, wq);
1036
1037         memcpy(sqc, param->sqc, sizeof(param->sqc));
1038         MLX5_SET(sqc,  sqc, tis_lst_sz, csp->tis_lst_sz);
1039         MLX5_SET(sqc,  sqc, tis_num_0, csp->tisn);
1040         MLX5_SET(sqc,  sqc, cqn, csp->cqn);
1041
1042         if (MLX5_CAP_ETH(mdev, wqe_inline_mode) == MLX5_CAP_INLINE_MODE_VPORT_CONTEXT)
1043                 MLX5_SET(sqc,  sqc, min_wqe_inline_mode, csp->min_inline_mode);
1044
1045         MLX5_SET(sqc,  sqc, state, MLX5_SQC_STATE_RST);
1046         MLX5_SET(sqc,  sqc, flush_in_error_en, 1);
1047
1048         MLX5_SET(wq,   wq, wq_type,       MLX5_WQ_TYPE_CYCLIC);
1049         MLX5_SET(wq,   wq, uar_page,      mdev->mlx5e_res.bfreg.index);
1050         MLX5_SET(wq,   wq, log_wq_pg_sz,  csp->wq_ctrl->buf.page_shift -
1051                                           MLX5_ADAPTER_PAGE_SHIFT);
1052         MLX5_SET64(wq, wq, dbr_addr,      csp->wq_ctrl->db.dma);
1053
1054         mlx5_fill_page_array(&csp->wq_ctrl->buf, (__be64 *)MLX5_ADDR_OF(wq, wq, pas));
1055
1056         err = mlx5_core_create_sq(mdev, in, inlen, sqn);
1057
1058         kvfree(in);
1059
1060         return err;
1061 }
1062
1063 struct mlx5e_modify_sq_param {
1064         int curr_state;
1065         int next_state;
1066         bool rl_update;
1067         int rl_index;
1068 };
1069
1070 static int mlx5e_modify_sq(struct mlx5_core_dev *mdev, u32 sqn,
1071                            struct mlx5e_modify_sq_param *p)
1072 {
1073         void *in;
1074         void *sqc;
1075         int inlen;
1076         int err;
1077
1078         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
1079         in = kvzalloc(inlen, GFP_KERNEL);
1080         if (!in)
1081                 return -ENOMEM;
1082
1083         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
1084
1085         MLX5_SET(modify_sq_in, in, sq_state, p->curr_state);
1086         MLX5_SET(sqc, sqc, state, p->next_state);
1087         if (p->rl_update && p->next_state == MLX5_SQC_STATE_RDY) {
1088                 MLX5_SET64(modify_sq_in, in, modify_bitmask, 1);
1089                 MLX5_SET(sqc,  sqc, packet_pacing_rate_limit_index, p->rl_index);
1090         }
1091
1092         err = mlx5_core_modify_sq(mdev, sqn, in, inlen);
1093
1094         kvfree(in);
1095
1096         return err;
1097 }
1098
1099 static void mlx5e_destroy_sq(struct mlx5_core_dev *mdev, u32 sqn)
1100 {
1101         mlx5_core_destroy_sq(mdev, sqn);
1102 }
1103
1104 static int mlx5e_create_sq_rdy(struct mlx5_core_dev *mdev,
1105                                struct mlx5e_sq_param *param,
1106                                struct mlx5e_create_sq_param *csp,
1107                                u32 *sqn)
1108 {
1109         struct mlx5e_modify_sq_param msp = {0};
1110         int err;
1111
1112         err = mlx5e_create_sq(mdev, param, csp, sqn);
1113         if (err)
1114                 return err;
1115
1116         msp.curr_state = MLX5_SQC_STATE_RST;
1117         msp.next_state = MLX5_SQC_STATE_RDY;
1118         err = mlx5e_modify_sq(mdev, *sqn, &msp);
1119         if (err)
1120                 mlx5e_destroy_sq(mdev, *sqn);
1121
1122         return err;
1123 }
1124
1125 static int mlx5e_set_sq_maxrate(struct net_device *dev,
1126                                 struct mlx5e_txqsq *sq, u32 rate);
1127
1128 static int mlx5e_open_txqsq(struct mlx5e_channel *c,
1129                             u32 tisn,
1130                             int txq_ix,
1131                             struct mlx5e_params *params,
1132                             struct mlx5e_sq_param *param,
1133                             struct mlx5e_txqsq *sq)
1134 {
1135         struct mlx5e_create_sq_param csp = {};
1136         u32 tx_rate;
1137         int err;
1138
1139         err = mlx5e_alloc_txqsq(c, txq_ix, params, param, sq);
1140         if (err)
1141                 return err;
1142
1143         csp.tisn            = tisn;
1144         csp.tis_lst_sz      = 1;
1145         csp.cqn             = sq->cq.mcq.cqn;
1146         csp.wq_ctrl         = &sq->wq_ctrl;
1147         csp.min_inline_mode = sq->min_inline_mode;
1148         err = mlx5e_create_sq_rdy(c->mdev, param, &csp, &sq->sqn);
1149         if (err)
1150                 goto err_free_txqsq;
1151
1152         tx_rate = c->priv->tx_rates[sq->txq_ix];
1153         if (tx_rate)
1154                 mlx5e_set_sq_maxrate(c->netdev, sq, tx_rate);
1155
1156         return 0;
1157
1158 err_free_txqsq:
1159         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1160         mlx5e_free_txqsq(sq);
1161
1162         return err;
1163 }
1164
1165 static void mlx5e_reset_txqsq_cc_pc(struct mlx5e_txqsq *sq)
1166 {
1167         WARN_ONCE(sq->cc != sq->pc,
1168                   "SQ 0x%x: cc (0x%x) != pc (0x%x)\n",
1169                   sq->sqn, sq->cc, sq->pc);
1170         sq->cc = 0;
1171         sq->dma_fifo_cc = 0;
1172         sq->pc = 0;
1173 }
1174
1175 static void mlx5e_activate_txqsq(struct mlx5e_txqsq *sq)
1176 {
1177         sq->txq = netdev_get_tx_queue(sq->channel->netdev, sq->txq_ix);
1178         clear_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state);
1179         set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1180         netdev_tx_reset_queue(sq->txq);
1181         netif_tx_start_queue(sq->txq);
1182 }
1183
1184 static inline void netif_tx_disable_queue(struct netdev_queue *txq)
1185 {
1186         __netif_tx_lock_bh(txq);
1187         netif_tx_stop_queue(txq);
1188         __netif_tx_unlock_bh(txq);
1189 }
1190
1191 static void mlx5e_deactivate_txqsq(struct mlx5e_txqsq *sq)
1192 {
1193         struct mlx5e_channel *c = sq->channel;
1194
1195         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1196         /* prevent netif_tx_wake_queue */
1197         napi_synchronize(&c->napi);
1198
1199         netif_tx_disable_queue(sq->txq);
1200
1201         /* last doorbell out, godspeed .. */
1202         if (mlx5e_wqc_has_room_for(&sq->wq, sq->cc, sq->pc, 1)) {
1203                 struct mlx5e_tx_wqe *nop;
1204
1205                 sq->db.wqe_info[(sq->pc & sq->wq.sz_m1)].skb = NULL;
1206                 nop = mlx5e_post_nop(&sq->wq, sq->sqn, &sq->pc);
1207                 mlx5e_notify_hw(&sq->wq, sq->pc, sq->uar_map, &nop->ctrl);
1208         }
1209 }
1210
1211 static void mlx5e_close_txqsq(struct mlx5e_txqsq *sq)
1212 {
1213         struct mlx5e_channel *c = sq->channel;
1214         struct mlx5_core_dev *mdev = c->mdev;
1215         struct mlx5_rate_limit rl = {0};
1216
1217         mlx5e_destroy_sq(mdev, sq->sqn);
1218         if (sq->rate_limit) {
1219                 rl.rate = sq->rate_limit;
1220                 mlx5_rl_remove_rate(mdev, &rl);
1221         }
1222         mlx5e_free_txqsq_descs(sq);
1223         mlx5e_free_txqsq(sq);
1224 }
1225
1226 static int mlx5e_wait_for_sq_flush(struct mlx5e_txqsq *sq)
1227 {
1228         unsigned long exp_time = jiffies + msecs_to_jiffies(2000);
1229
1230         while (time_before(jiffies, exp_time)) {
1231                 if (sq->cc == sq->pc)
1232                         return 0;
1233
1234                 msleep(20);
1235         }
1236
1237         netdev_err(sq->channel->netdev,
1238                    "Wait for SQ 0x%x flush timeout (sq cc = 0x%x, sq pc = 0x%x)\n",
1239                    sq->sqn, sq->cc, sq->pc);
1240
1241         return -ETIMEDOUT;
1242 }
1243
1244 static int mlx5e_sq_to_ready(struct mlx5e_txqsq *sq, int curr_state)
1245 {
1246         struct mlx5_core_dev *mdev = sq->channel->mdev;
1247         struct net_device *dev = sq->channel->netdev;
1248         struct mlx5e_modify_sq_param msp = {0};
1249         int err;
1250
1251         msp.curr_state = curr_state;
1252         msp.next_state = MLX5_SQC_STATE_RST;
1253
1254         err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
1255         if (err) {
1256                 netdev_err(dev, "Failed to move sq 0x%x to reset\n", sq->sqn);
1257                 return err;
1258         }
1259
1260         memset(&msp, 0, sizeof(msp));
1261         msp.curr_state = MLX5_SQC_STATE_RST;
1262         msp.next_state = MLX5_SQC_STATE_RDY;
1263
1264         err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
1265         if (err) {
1266                 netdev_err(dev, "Failed to move sq 0x%x to ready\n", sq->sqn);
1267                 return err;
1268         }
1269
1270         return 0;
1271 }
1272
1273 static void mlx5e_sq_recover(struct work_struct *work)
1274 {
1275         struct mlx5e_txqsq_recover *recover =
1276                 container_of(work, struct mlx5e_txqsq_recover,
1277                              recover_work);
1278         struct mlx5e_txqsq *sq = container_of(recover, struct mlx5e_txqsq,
1279                                               recover);
1280         struct mlx5_core_dev *mdev = sq->channel->mdev;
1281         struct net_device *dev = sq->channel->netdev;
1282         u8 state;
1283         int err;
1284
1285         err = mlx5_core_query_sq_state(mdev, sq->sqn, &state);
1286         if (err) {
1287                 netdev_err(dev, "Failed to query SQ 0x%x state. err = %d\n",
1288                            sq->sqn, err);
1289                 return;
1290         }
1291
1292         if (state != MLX5_RQC_STATE_ERR) {
1293                 netdev_err(dev, "SQ 0x%x not in ERROR state\n", sq->sqn);
1294                 return;
1295         }
1296
1297         netif_tx_disable_queue(sq->txq);
1298
1299         if (mlx5e_wait_for_sq_flush(sq))
1300                 return;
1301
1302         /* If the interval between two consecutive recovers per SQ is too
1303          * short, don't recover to avoid infinite loop of ERR_CQE -> recover.
1304          * If we reached this state, there is probably a bug that needs to be
1305          * fixed. let's keep the queue close and let tx timeout cleanup.
1306          */
1307         if (jiffies_to_msecs(jiffies - recover->last_recover) <
1308             MLX5E_SQ_RECOVER_MIN_INTERVAL) {
1309                 netdev_err(dev, "Recover SQ 0x%x canceled, too many error CQEs\n",
1310                            sq->sqn);
1311                 return;
1312         }
1313
1314         /* At this point, no new packets will arrive from the stack as TXQ is
1315          * marked with QUEUE_STATE_DRV_XOFF. In addition, NAPI cleared all
1316          * pending WQEs.  SQ can safely reset the SQ.
1317          */
1318         if (mlx5e_sq_to_ready(sq, state))
1319                 return;
1320
1321         mlx5e_reset_txqsq_cc_pc(sq);
1322         sq->stats.recover++;
1323         recover->last_recover = jiffies;
1324         mlx5e_activate_txqsq(sq);
1325 }
1326
1327 static int mlx5e_open_icosq(struct mlx5e_channel *c,
1328                             struct mlx5e_params *params,
1329                             struct mlx5e_sq_param *param,
1330                             struct mlx5e_icosq *sq)
1331 {
1332         struct mlx5e_create_sq_param csp = {};
1333         int err;
1334
1335         err = mlx5e_alloc_icosq(c, param, sq);
1336         if (err)
1337                 return err;
1338
1339         csp.cqn             = sq->cq.mcq.cqn;
1340         csp.wq_ctrl         = &sq->wq_ctrl;
1341         csp.min_inline_mode = params->tx_min_inline_mode;
1342         set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1343         err = mlx5e_create_sq_rdy(c->mdev, param, &csp, &sq->sqn);
1344         if (err)
1345                 goto err_free_icosq;
1346
1347         return 0;
1348
1349 err_free_icosq:
1350         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1351         mlx5e_free_icosq(sq);
1352
1353         return err;
1354 }
1355
1356 static void mlx5e_close_icosq(struct mlx5e_icosq *sq)
1357 {
1358         struct mlx5e_channel *c = sq->channel;
1359
1360         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1361         napi_synchronize(&c->napi);
1362
1363         mlx5e_destroy_sq(c->mdev, sq->sqn);
1364         mlx5e_free_icosq(sq);
1365 }
1366
1367 static int mlx5e_open_xdpsq(struct mlx5e_channel *c,
1368                             struct mlx5e_params *params,
1369                             struct mlx5e_sq_param *param,
1370                             struct mlx5e_xdpsq *sq)
1371 {
1372         unsigned int ds_cnt = MLX5E_XDP_TX_DS_COUNT;
1373         struct mlx5e_create_sq_param csp = {};
1374         unsigned int inline_hdr_sz = 0;
1375         int err;
1376         int i;
1377
1378         err = mlx5e_alloc_xdpsq(c, params, param, sq);
1379         if (err)
1380                 return err;
1381
1382         csp.tis_lst_sz      = 1;
1383         csp.tisn            = c->priv->tisn[0]; /* tc = 0 */
1384         csp.cqn             = sq->cq.mcq.cqn;
1385         csp.wq_ctrl         = &sq->wq_ctrl;
1386         csp.min_inline_mode = sq->min_inline_mode;
1387         set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1388         err = mlx5e_create_sq_rdy(c->mdev, param, &csp, &sq->sqn);
1389         if (err)
1390                 goto err_free_xdpsq;
1391
1392         if (sq->min_inline_mode != MLX5_INLINE_MODE_NONE) {
1393                 inline_hdr_sz = MLX5E_XDP_MIN_INLINE;
1394                 ds_cnt++;
1395         }
1396
1397         /* Pre initialize fixed WQE fields */
1398         for (i = 0; i < mlx5_wq_cyc_get_size(&sq->wq); i++) {
1399                 struct mlx5e_tx_wqe      *wqe  = mlx5_wq_cyc_get_wqe(&sq->wq, i);
1400                 struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl;
1401                 struct mlx5_wqe_eth_seg  *eseg = &wqe->eth;
1402                 struct mlx5_wqe_data_seg *dseg;
1403
1404                 cseg->qpn_ds = cpu_to_be32((sq->sqn << 8) | ds_cnt);
1405                 eseg->inline_hdr.sz = cpu_to_be16(inline_hdr_sz);
1406
1407                 dseg = (struct mlx5_wqe_data_seg *)cseg + (ds_cnt - 1);
1408                 dseg->lkey = sq->mkey_be;
1409         }
1410
1411         return 0;
1412
1413 err_free_xdpsq:
1414         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1415         mlx5e_free_xdpsq(sq);
1416
1417         return err;
1418 }
1419
1420 static void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq)
1421 {
1422         struct mlx5e_channel *c = sq->channel;
1423
1424         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
1425         napi_synchronize(&c->napi);
1426
1427         mlx5e_destroy_sq(c->mdev, sq->sqn);
1428         mlx5e_free_xdpsq_descs(sq);
1429         mlx5e_free_xdpsq(sq);
1430 }
1431
1432 static int mlx5e_alloc_cq_common(struct mlx5_core_dev *mdev,
1433                                  struct mlx5e_cq_param *param,
1434                                  struct mlx5e_cq *cq)
1435 {
1436         struct mlx5_core_cq *mcq = &cq->mcq;
1437         int eqn_not_used;
1438         unsigned int irqn;
1439         int err;
1440         u32 i;
1441
1442         err = mlx5_cqwq_create(mdev, &param->wq, param->cqc, &cq->wq,
1443                                &cq->wq_ctrl);
1444         if (err)
1445                 return err;
1446
1447         mlx5_vector2eqn(mdev, param->eq_ix, &eqn_not_used, &irqn);
1448
1449         mcq->cqe_sz     = 64;
1450         mcq->set_ci_db  = cq->wq_ctrl.db.db;
1451         mcq->arm_db     = cq->wq_ctrl.db.db + 1;
1452         *mcq->set_ci_db = 0;
1453         *mcq->arm_db    = 0;
1454         mcq->vector     = param->eq_ix;
1455         mcq->comp       = mlx5e_completion_event;
1456         mcq->event      = mlx5e_cq_error_event;
1457         mcq->irqn       = irqn;
1458
1459         for (i = 0; i < mlx5_cqwq_get_size(&cq->wq); i++) {
1460                 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(&cq->wq, i);
1461
1462                 cqe->op_own = 0xf1;
1463         }
1464
1465         cq->mdev = mdev;
1466
1467         return 0;
1468 }
1469
1470 static int mlx5e_alloc_cq(struct mlx5e_channel *c,
1471                           struct mlx5e_cq_param *param,
1472                           struct mlx5e_cq *cq)
1473 {
1474         struct mlx5_core_dev *mdev = c->priv->mdev;
1475         int err;
1476
1477         param->wq.buf_numa_node = cpu_to_node(c->cpu);
1478         param->wq.db_numa_node  = cpu_to_node(c->cpu);
1479         param->eq_ix   = c->ix;
1480
1481         err = mlx5e_alloc_cq_common(mdev, param, cq);
1482
1483         cq->napi    = &c->napi;
1484         cq->channel = c;
1485
1486         return err;
1487 }
1488
1489 static void mlx5e_free_cq(struct mlx5e_cq *cq)
1490 {
1491         mlx5_cqwq_destroy(&cq->wq_ctrl);
1492 }
1493
1494 static int mlx5e_create_cq(struct mlx5e_cq *cq, struct mlx5e_cq_param *param)
1495 {
1496         struct mlx5_core_dev *mdev = cq->mdev;
1497         struct mlx5_core_cq *mcq = &cq->mcq;
1498
1499         void *in;
1500         void *cqc;
1501         int inlen;
1502         unsigned int irqn_not_used;
1503         int eqn;
1504         int err;
1505
1506         inlen = MLX5_ST_SZ_BYTES(create_cq_in) +
1507                 sizeof(u64) * cq->wq_ctrl.frag_buf.npages;
1508         in = kvzalloc(inlen, GFP_KERNEL);
1509         if (!in)
1510                 return -ENOMEM;
1511
1512         cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context);
1513
1514         memcpy(cqc, param->cqc, sizeof(param->cqc));
1515
1516         mlx5_fill_page_frag_array(&cq->wq_ctrl.frag_buf,
1517                                   (__be64 *)MLX5_ADDR_OF(create_cq_in, in, pas));
1518
1519         mlx5_vector2eqn(mdev, param->eq_ix, &eqn, &irqn_not_used);
1520
1521         MLX5_SET(cqc,   cqc, cq_period_mode, param->cq_period_mode);
1522         MLX5_SET(cqc,   cqc, c_eqn,         eqn);
1523         MLX5_SET(cqc,   cqc, uar_page,      mdev->priv.uar->index);
1524         MLX5_SET(cqc,   cqc, log_page_size, cq->wq_ctrl.frag_buf.page_shift -
1525                                             MLX5_ADAPTER_PAGE_SHIFT);
1526         MLX5_SET64(cqc, cqc, dbr_addr,      cq->wq_ctrl.db.dma);
1527
1528         err = mlx5_core_create_cq(mdev, mcq, in, inlen);
1529
1530         kvfree(in);
1531
1532         if (err)
1533                 return err;
1534
1535         mlx5e_cq_arm(cq);
1536
1537         return 0;
1538 }
1539
1540 static void mlx5e_destroy_cq(struct mlx5e_cq *cq)
1541 {
1542         mlx5_core_destroy_cq(cq->mdev, &cq->mcq);
1543 }
1544
1545 static int mlx5e_open_cq(struct mlx5e_channel *c,
1546                          struct net_dim_cq_moder moder,
1547                          struct mlx5e_cq_param *param,
1548                          struct mlx5e_cq *cq)
1549 {
1550         struct mlx5_core_dev *mdev = c->mdev;
1551         int err;
1552
1553         err = mlx5e_alloc_cq(c, param, cq);
1554         if (err)
1555                 return err;
1556
1557         err = mlx5e_create_cq(cq, param);
1558         if (err)
1559                 goto err_free_cq;
1560
1561         if (MLX5_CAP_GEN(mdev, cq_moderation))
1562                 mlx5_core_modify_cq_moderation(mdev, &cq->mcq, moder.usec, moder.pkts);
1563         return 0;
1564
1565 err_free_cq:
1566         mlx5e_free_cq(cq);
1567
1568         return err;
1569 }
1570
1571 static void mlx5e_close_cq(struct mlx5e_cq *cq)
1572 {
1573         mlx5e_destroy_cq(cq);
1574         mlx5e_free_cq(cq);
1575 }
1576
1577 static int mlx5e_get_cpu(struct mlx5e_priv *priv, int ix)
1578 {
1579         return cpumask_first(priv->mdev->priv.irq_info[ix].mask);
1580 }
1581
1582 static int mlx5e_open_tx_cqs(struct mlx5e_channel *c,
1583                              struct mlx5e_params *params,
1584                              struct mlx5e_channel_param *cparam)
1585 {
1586         int err;
1587         int tc;
1588
1589         for (tc = 0; tc < c->num_tc; tc++) {
1590                 err = mlx5e_open_cq(c, params->tx_cq_moderation,
1591                                     &cparam->tx_cq, &c->sq[tc].cq);
1592                 if (err)
1593                         goto err_close_tx_cqs;
1594         }
1595
1596         return 0;
1597
1598 err_close_tx_cqs:
1599         for (tc--; tc >= 0; tc--)
1600                 mlx5e_close_cq(&c->sq[tc].cq);
1601
1602         return err;
1603 }
1604
1605 static void mlx5e_close_tx_cqs(struct mlx5e_channel *c)
1606 {
1607         int tc;
1608
1609         for (tc = 0; tc < c->num_tc; tc++)
1610                 mlx5e_close_cq(&c->sq[tc].cq);
1611 }
1612
1613 static int mlx5e_open_sqs(struct mlx5e_channel *c,
1614                           struct mlx5e_params *params,
1615                           struct mlx5e_channel_param *cparam)
1616 {
1617         int err;
1618         int tc;
1619
1620         for (tc = 0; tc < params->num_tc; tc++) {
1621                 int txq_ix = c->ix + tc * params->num_channels;
1622
1623                 err = mlx5e_open_txqsq(c, c->priv->tisn[tc], txq_ix,
1624                                        params, &cparam->sq, &c->sq[tc]);
1625                 if (err)
1626                         goto err_close_sqs;
1627         }
1628
1629         return 0;
1630
1631 err_close_sqs:
1632         for (tc--; tc >= 0; tc--)
1633                 mlx5e_close_txqsq(&c->sq[tc]);
1634
1635         return err;
1636 }
1637
1638 static void mlx5e_close_sqs(struct mlx5e_channel *c)
1639 {
1640         int tc;
1641
1642         for (tc = 0; tc < c->num_tc; tc++)
1643                 mlx5e_close_txqsq(&c->sq[tc]);
1644 }
1645
1646 static int mlx5e_set_sq_maxrate(struct net_device *dev,
1647                                 struct mlx5e_txqsq *sq, u32 rate)
1648 {
1649         struct mlx5e_priv *priv = netdev_priv(dev);
1650         struct mlx5_core_dev *mdev = priv->mdev;
1651         struct mlx5e_modify_sq_param msp = {0};
1652         struct mlx5_rate_limit rl = {0};
1653         u16 rl_index = 0;
1654         int err;
1655
1656         if (rate == sq->rate_limit)
1657                 /* nothing to do */
1658                 return 0;
1659
1660         if (sq->rate_limit) {
1661                 rl.rate = sq->rate_limit;
1662                 /* remove current rl index to free space to next ones */
1663                 mlx5_rl_remove_rate(mdev, &rl);
1664         }
1665
1666         sq->rate_limit = 0;
1667
1668         if (rate) {
1669                 rl.rate = rate;
1670                 err = mlx5_rl_add_rate(mdev, &rl_index, &rl);
1671                 if (err) {
1672                         netdev_err(dev, "Failed configuring rate %u: %d\n",
1673                                    rate, err);
1674                         return err;
1675                 }
1676         }
1677
1678         msp.curr_state = MLX5_SQC_STATE_RDY;
1679         msp.next_state = MLX5_SQC_STATE_RDY;
1680         msp.rl_index   = rl_index;
1681         msp.rl_update  = true;
1682         err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
1683         if (err) {
1684                 netdev_err(dev, "Failed configuring rate %u: %d\n",
1685                            rate, err);
1686                 /* remove the rate from the table */
1687                 if (rate)
1688                         mlx5_rl_remove_rate(mdev, &rl);
1689                 return err;
1690         }
1691
1692         sq->rate_limit = rate;
1693         return 0;
1694 }
1695
1696 static int mlx5e_set_tx_maxrate(struct net_device *dev, int index, u32 rate)
1697 {
1698         struct mlx5e_priv *priv = netdev_priv(dev);
1699         struct mlx5_core_dev *mdev = priv->mdev;
1700         struct mlx5e_txqsq *sq = priv->txq2sq[index];
1701         int err = 0;
1702
1703         if (!mlx5_rl_is_supported(mdev)) {
1704                 netdev_err(dev, "Rate limiting is not supported on this device\n");
1705                 return -EINVAL;
1706         }
1707
1708         /* rate is given in Mb/sec, HW config is in Kb/sec */
1709         rate = rate << 10;
1710
1711         /* Check whether rate in valid range, 0 is always valid */
1712         if (rate && !mlx5_rl_is_in_range(mdev, rate)) {
1713                 netdev_err(dev, "TX rate %u, is not in range\n", rate);
1714                 return -ERANGE;
1715         }
1716
1717         mutex_lock(&priv->state_lock);
1718         if (test_bit(MLX5E_STATE_OPENED, &priv->state))
1719                 err = mlx5e_set_sq_maxrate(dev, sq, rate);
1720         if (!err)
1721                 priv->tx_rates[index] = rate;
1722         mutex_unlock(&priv->state_lock);
1723
1724         return err;
1725 }
1726
1727 static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
1728                               struct mlx5e_params *params,
1729                               struct mlx5e_channel_param *cparam,
1730                               struct mlx5e_channel **cp)
1731 {
1732         struct net_dim_cq_moder icocq_moder = {0, 0};
1733         struct net_device *netdev = priv->netdev;
1734         int cpu = mlx5e_get_cpu(priv, ix);
1735         struct mlx5e_channel *c;
1736         unsigned int irq;
1737         int err;
1738         int eqn;
1739
1740         c = kzalloc_node(sizeof(*c), GFP_KERNEL, cpu_to_node(cpu));
1741         if (!c)
1742                 return -ENOMEM;
1743
1744         c->priv     = priv;
1745         c->mdev     = priv->mdev;
1746         c->tstamp   = &priv->tstamp;
1747         c->ix       = ix;
1748         c->cpu      = cpu;
1749         c->pdev     = &priv->mdev->pdev->dev;
1750         c->netdev   = priv->netdev;
1751         c->mkey_be  = cpu_to_be32(priv->mdev->mlx5e_res.mkey.key);
1752         c->num_tc   = params->num_tc;
1753         c->xdp      = !!params->xdp_prog;
1754
1755         mlx5_vector2eqn(priv->mdev, ix, &eqn, &irq);
1756         c->irq_desc = irq_to_desc(irq);
1757
1758         netif_napi_add(netdev, &c->napi, mlx5e_napi_poll, 64);
1759
1760         err = mlx5e_open_cq(c, icocq_moder, &cparam->icosq_cq, &c->icosq.cq);
1761         if (err)
1762                 goto err_napi_del;
1763
1764         err = mlx5e_open_tx_cqs(c, params, cparam);
1765         if (err)
1766                 goto err_close_icosq_cq;
1767
1768         err = mlx5e_open_cq(c, params->rx_cq_moderation, &cparam->rx_cq, &c->rq.cq);
1769         if (err)
1770                 goto err_close_tx_cqs;
1771
1772         /* XDP SQ CQ params are same as normal TXQ sq CQ params */
1773         err = c->xdp ? mlx5e_open_cq(c, params->tx_cq_moderation,
1774                                      &cparam->tx_cq, &c->rq.xdpsq.cq) : 0;
1775         if (err)
1776                 goto err_close_rx_cq;
1777
1778         napi_enable(&c->napi);
1779
1780         err = mlx5e_open_icosq(c, params, &cparam->icosq, &c->icosq);
1781         if (err)
1782                 goto err_disable_napi;
1783
1784         err = mlx5e_open_sqs(c, params, cparam);
1785         if (err)
1786                 goto err_close_icosq;
1787
1788         err = c->xdp ? mlx5e_open_xdpsq(c, params, &cparam->xdp_sq, &c->rq.xdpsq) : 0;
1789         if (err)
1790                 goto err_close_sqs;
1791
1792         err = mlx5e_open_rq(c, params, &cparam->rq, &c->rq);
1793         if (err)
1794                 goto err_close_xdp_sq;
1795
1796         *cp = c;
1797
1798         return 0;
1799 err_close_xdp_sq:
1800         if (c->xdp)
1801                 mlx5e_close_xdpsq(&c->rq.xdpsq);
1802
1803 err_close_sqs:
1804         mlx5e_close_sqs(c);
1805
1806 err_close_icosq:
1807         mlx5e_close_icosq(&c->icosq);
1808
1809 err_disable_napi:
1810         napi_disable(&c->napi);
1811         if (c->xdp)
1812                 mlx5e_close_cq(&c->rq.xdpsq.cq);
1813
1814 err_close_rx_cq:
1815         mlx5e_close_cq(&c->rq.cq);
1816
1817 err_close_tx_cqs:
1818         mlx5e_close_tx_cqs(c);
1819
1820 err_close_icosq_cq:
1821         mlx5e_close_cq(&c->icosq.cq);
1822
1823 err_napi_del:
1824         netif_napi_del(&c->napi);
1825         kfree(c);
1826
1827         return err;
1828 }
1829
1830 static void mlx5e_activate_channel(struct mlx5e_channel *c)
1831 {
1832         int tc;
1833
1834         for (tc = 0; tc < c->num_tc; tc++)
1835                 mlx5e_activate_txqsq(&c->sq[tc]);
1836         mlx5e_activate_rq(&c->rq);
1837         netif_set_xps_queue(c->netdev, get_cpu_mask(c->cpu), c->ix);
1838 }
1839
1840 static void mlx5e_deactivate_channel(struct mlx5e_channel *c)
1841 {
1842         int tc;
1843
1844         mlx5e_deactivate_rq(&c->rq);
1845         for (tc = 0; tc < c->num_tc; tc++)
1846                 mlx5e_deactivate_txqsq(&c->sq[tc]);
1847 }
1848
1849 static void mlx5e_close_channel(struct mlx5e_channel *c)
1850 {
1851         mlx5e_close_rq(&c->rq);
1852         if (c->xdp)
1853                 mlx5e_close_xdpsq(&c->rq.xdpsq);
1854         mlx5e_close_sqs(c);
1855         mlx5e_close_icosq(&c->icosq);
1856         napi_disable(&c->napi);
1857         if (c->xdp)
1858                 mlx5e_close_cq(&c->rq.xdpsq.cq);
1859         mlx5e_close_cq(&c->rq.cq);
1860         mlx5e_close_tx_cqs(c);
1861         mlx5e_close_cq(&c->icosq.cq);
1862         netif_napi_del(&c->napi);
1863
1864         kfree(c);
1865 }
1866
1867 static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
1868                                  struct mlx5e_params *params,
1869                                  struct mlx5e_rq_param *param)
1870 {
1871         struct mlx5_core_dev *mdev = priv->mdev;
1872         void *rqc = param->rqc;
1873         void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
1874
1875         switch (params->rq_wq_type) {
1876         case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
1877                 MLX5_SET(wq, wq, log_wqe_num_of_strides,
1878                          mlx5e_mpwqe_get_log_num_strides(mdev, params) -
1879                          MLX5_MPWQE_LOG_NUM_STRIDES_BASE);
1880                 MLX5_SET(wq, wq, log_wqe_stride_size,
1881                          mlx5e_mpwqe_get_log_stride_size(mdev, params) -
1882                          MLX5_MPWQE_LOG_STRIDE_SZ_BASE);
1883                 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ);
1884                 MLX5_SET(wq, wq, log_wq_sz, mlx5e_mpwqe_get_log_rq_size(params));
1885                 break;
1886         default: /* MLX5_WQ_TYPE_LINKED_LIST */
1887                 MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
1888                 MLX5_SET(wq, wq, log_wq_sz, params->log_rq_mtu_frames);
1889         }
1890
1891         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
1892         MLX5_SET(wq, wq, log_wq_stride,    ilog2(sizeof(struct mlx5e_rx_wqe)));
1893         MLX5_SET(wq, wq, pd,               mdev->mlx5e_res.pdn);
1894         MLX5_SET(rqc, rqc, counter_set_id, priv->q_counter);
1895         MLX5_SET(rqc, rqc, vsd,            params->vlan_strip_disable);
1896         MLX5_SET(rqc, rqc, scatter_fcs,    params->scatter_fcs_en);
1897
1898         param->wq.buf_numa_node = dev_to_node(&mdev->pdev->dev);
1899 }
1900
1901 static void mlx5e_build_drop_rq_param(struct mlx5e_priv *priv,
1902                                       struct mlx5e_rq_param *param)
1903 {
1904         struct mlx5_core_dev *mdev = priv->mdev;
1905         void *rqc = param->rqc;
1906         void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
1907
1908         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
1909         MLX5_SET(wq, wq, log_wq_stride,    ilog2(sizeof(struct mlx5e_rx_wqe)));
1910         MLX5_SET(rqc, rqc, counter_set_id, priv->drop_rq_q_counter);
1911
1912         param->wq.buf_numa_node = dev_to_node(&mdev->pdev->dev);
1913 }
1914
1915 static void mlx5e_build_sq_param_common(struct mlx5e_priv *priv,
1916                                         struct mlx5e_sq_param *param)
1917 {
1918         void *sqc = param->sqc;
1919         void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
1920
1921         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1922         MLX5_SET(wq, wq, pd,            priv->mdev->mlx5e_res.pdn);
1923
1924         param->wq.buf_numa_node = dev_to_node(&priv->mdev->pdev->dev);
1925 }
1926
1927 static void mlx5e_build_sq_param(struct mlx5e_priv *priv,
1928                                  struct mlx5e_params *params,
1929                                  struct mlx5e_sq_param *param)
1930 {
1931         void *sqc = param->sqc;
1932         void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
1933
1934         mlx5e_build_sq_param_common(priv, param);
1935         MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size);
1936         MLX5_SET(sqc, sqc, allow_swp, !!MLX5_IPSEC_DEV(priv->mdev));
1937 }
1938
1939 static void mlx5e_build_common_cq_param(struct mlx5e_priv *priv,
1940                                         struct mlx5e_cq_param *param)
1941 {
1942         void *cqc = param->cqc;
1943
1944         MLX5_SET(cqc, cqc, uar_page, priv->mdev->priv.uar->index);
1945 }
1946
1947 static void mlx5e_build_rx_cq_param(struct mlx5e_priv *priv,
1948                                     struct mlx5e_params *params,
1949                                     struct mlx5e_cq_param *param)
1950 {
1951         struct mlx5_core_dev *mdev = priv->mdev;
1952         void *cqc = param->cqc;
1953         u8 log_cq_size;
1954
1955         switch (params->rq_wq_type) {
1956         case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
1957                 log_cq_size = mlx5e_mpwqe_get_log_rq_size(params) +
1958                         mlx5e_mpwqe_get_log_num_strides(mdev, params);
1959                 break;
1960         default: /* MLX5_WQ_TYPE_LINKED_LIST */
1961                 log_cq_size = params->log_rq_mtu_frames;
1962         }
1963
1964         MLX5_SET(cqc, cqc, log_cq_size, log_cq_size);
1965         if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS)) {
1966                 MLX5_SET(cqc, cqc, mini_cqe_res_format, MLX5_CQE_FORMAT_CSUM);
1967                 MLX5_SET(cqc, cqc, cqe_comp_en, 1);
1968         }
1969
1970         mlx5e_build_common_cq_param(priv, param);
1971         param->cq_period_mode = params->rx_cq_moderation.cq_period_mode;
1972 }
1973
1974 static void mlx5e_build_tx_cq_param(struct mlx5e_priv *priv,
1975                                     struct mlx5e_params *params,
1976                                     struct mlx5e_cq_param *param)
1977 {
1978         void *cqc = param->cqc;
1979
1980         MLX5_SET(cqc, cqc, log_cq_size, params->log_sq_size);
1981
1982         mlx5e_build_common_cq_param(priv, param);
1983         param->cq_period_mode = params->tx_cq_moderation.cq_period_mode;
1984 }
1985
1986 static void mlx5e_build_ico_cq_param(struct mlx5e_priv *priv,
1987                                      u8 log_wq_size,
1988                                      struct mlx5e_cq_param *param)
1989 {
1990         void *cqc = param->cqc;
1991
1992         MLX5_SET(cqc, cqc, log_cq_size, log_wq_size);
1993
1994         mlx5e_build_common_cq_param(priv, param);
1995
1996         param->cq_period_mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
1997 }
1998
1999 static void mlx5e_build_icosq_param(struct mlx5e_priv *priv,
2000                                     u8 log_wq_size,
2001                                     struct mlx5e_sq_param *param)
2002 {
2003         void *sqc = param->sqc;
2004         void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
2005
2006         mlx5e_build_sq_param_common(priv, param);
2007
2008         MLX5_SET(wq, wq, log_wq_sz, log_wq_size);
2009         MLX5_SET(sqc, sqc, reg_umr, MLX5_CAP_ETH(priv->mdev, reg_umr_sq));
2010 }
2011
2012 static void mlx5e_build_xdpsq_param(struct mlx5e_priv *priv,
2013                                     struct mlx5e_params *params,
2014                                     struct mlx5e_sq_param *param)
2015 {
2016         void *sqc = param->sqc;
2017         void *wq = MLX5_ADDR_OF(sqc, sqc, wq);
2018
2019         mlx5e_build_sq_param_common(priv, param);
2020         MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size);
2021 }
2022
2023 static void mlx5e_build_channel_param(struct mlx5e_priv *priv,
2024                                       struct mlx5e_params *params,
2025                                       struct mlx5e_channel_param *cparam)
2026 {
2027         u8 icosq_log_wq_sz = MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
2028
2029         mlx5e_build_rq_param(priv, params, &cparam->rq);
2030         mlx5e_build_sq_param(priv, params, &cparam->sq);
2031         mlx5e_build_xdpsq_param(priv, params, &cparam->xdp_sq);
2032         mlx5e_build_icosq_param(priv, icosq_log_wq_sz, &cparam->icosq);
2033         mlx5e_build_rx_cq_param(priv, params, &cparam->rx_cq);
2034         mlx5e_build_tx_cq_param(priv, params, &cparam->tx_cq);
2035         mlx5e_build_ico_cq_param(priv, icosq_log_wq_sz, &cparam->icosq_cq);
2036 }
2037
2038 int mlx5e_open_channels(struct mlx5e_priv *priv,
2039                         struct mlx5e_channels *chs)
2040 {
2041         struct mlx5e_channel_param *cparam;
2042         int err = -ENOMEM;
2043         int i;
2044
2045         chs->num = chs->params.num_channels;
2046
2047         chs->c = kcalloc(chs->num, sizeof(struct mlx5e_channel *), GFP_KERNEL);
2048         cparam = kzalloc(sizeof(struct mlx5e_channel_param), GFP_KERNEL);
2049         if (!chs->c || !cparam)
2050                 goto err_free;
2051
2052         mlx5e_build_channel_param(priv, &chs->params, cparam);
2053         for (i = 0; i < chs->num; i++) {
2054                 err = mlx5e_open_channel(priv, i, &chs->params, cparam, &chs->c[i]);
2055                 if (err)
2056                         goto err_close_channels;
2057         }
2058
2059         kfree(cparam);
2060         return 0;
2061
2062 err_close_channels:
2063         for (i--; i >= 0; i--)
2064                 mlx5e_close_channel(chs->c[i]);
2065
2066 err_free:
2067         kfree(chs->c);
2068         kfree(cparam);
2069         chs->num = 0;
2070         return err;
2071 }
2072
2073 static void mlx5e_activate_channels(struct mlx5e_channels *chs)
2074 {
2075         int i;
2076
2077         for (i = 0; i < chs->num; i++)
2078                 mlx5e_activate_channel(chs->c[i]);
2079 }
2080
2081 static int mlx5e_wait_channels_min_rx_wqes(struct mlx5e_channels *chs)
2082 {
2083         int err = 0;
2084         int i;
2085
2086         for (i = 0; i < chs->num; i++) {
2087                 err = mlx5e_wait_for_min_rx_wqes(&chs->c[i]->rq);
2088                 if (err)
2089                         break;
2090         }
2091
2092         return err;
2093 }
2094
2095 static void mlx5e_deactivate_channels(struct mlx5e_channels *chs)
2096 {
2097         int i;
2098
2099         for (i = 0; i < chs->num; i++)
2100                 mlx5e_deactivate_channel(chs->c[i]);
2101 }
2102
2103 void mlx5e_close_channels(struct mlx5e_channels *chs)
2104 {
2105         int i;
2106
2107         for (i = 0; i < chs->num; i++)
2108                 mlx5e_close_channel(chs->c[i]);
2109
2110         kfree(chs->c);
2111         chs->num = 0;
2112 }
2113
2114 static int
2115 mlx5e_create_rqt(struct mlx5e_priv *priv, int sz, struct mlx5e_rqt *rqt)
2116 {
2117         struct mlx5_core_dev *mdev = priv->mdev;
2118         void *rqtc;
2119         int inlen;
2120         int err;
2121         u32 *in;
2122         int i;
2123
2124         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
2125         in = kvzalloc(inlen, GFP_KERNEL);
2126         if (!in)
2127                 return -ENOMEM;
2128
2129         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
2130
2131         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
2132         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
2133
2134         for (i = 0; i < sz; i++)
2135                 MLX5_SET(rqtc, rqtc, rq_num[i], priv->drop_rq.rqn);
2136
2137         err = mlx5_core_create_rqt(mdev, in, inlen, &rqt->rqtn);
2138         if (!err)
2139                 rqt->enabled = true;
2140
2141         kvfree(in);
2142         return err;
2143 }
2144
2145 void mlx5e_destroy_rqt(struct mlx5e_priv *priv, struct mlx5e_rqt *rqt)
2146 {
2147         rqt->enabled = false;
2148         mlx5_core_destroy_rqt(priv->mdev, rqt->rqtn);
2149 }
2150
2151 int mlx5e_create_indirect_rqt(struct mlx5e_priv *priv)
2152 {
2153         struct mlx5e_rqt *rqt = &priv->indir_rqt;
2154         int err;
2155
2156         err = mlx5e_create_rqt(priv, MLX5E_INDIR_RQT_SIZE, rqt);
2157         if (err)
2158                 mlx5_core_warn(priv->mdev, "create indirect rqts failed, %d\n", err);
2159         return err;
2160 }
2161
2162 int mlx5e_create_direct_rqts(struct mlx5e_priv *priv)
2163 {
2164         struct mlx5e_rqt *rqt;
2165         int err;
2166         int ix;
2167
2168         for (ix = 0; ix < priv->profile->max_nch(priv->mdev); ix++) {
2169                 rqt = &priv->direct_tir[ix].rqt;
2170                 err = mlx5e_create_rqt(priv, 1 /*size */, rqt);
2171                 if (err)
2172                         goto err_destroy_rqts;
2173         }
2174
2175         return 0;
2176
2177 err_destroy_rqts:
2178         mlx5_core_warn(priv->mdev, "create direct rqts failed, %d\n", err);
2179         for (ix--; ix >= 0; ix--)
2180                 mlx5e_destroy_rqt(priv, &priv->direct_tir[ix].rqt);
2181
2182         return err;
2183 }
2184
2185 void mlx5e_destroy_direct_rqts(struct mlx5e_priv *priv)
2186 {
2187         int i;
2188
2189         for (i = 0; i < priv->profile->max_nch(priv->mdev); i++)
2190                 mlx5e_destroy_rqt(priv, &priv->direct_tir[i].rqt);
2191 }
2192
2193 static int mlx5e_rx_hash_fn(int hfunc)
2194 {
2195         return (hfunc == ETH_RSS_HASH_TOP) ?
2196                MLX5_RX_HASH_FN_TOEPLITZ :
2197                MLX5_RX_HASH_FN_INVERTED_XOR8;
2198 }
2199
2200 int mlx5e_bits_invert(unsigned long a, int size)
2201 {
2202         int inv = 0;
2203         int i;
2204
2205         for (i = 0; i < size; i++)
2206                 inv |= (test_bit(size - i - 1, &a) ? 1 : 0) << i;
2207
2208         return inv;
2209 }
2210
2211 static void mlx5e_fill_rqt_rqns(struct mlx5e_priv *priv, int sz,
2212                                 struct mlx5e_redirect_rqt_param rrp, void *rqtc)
2213 {
2214         int i;
2215
2216         for (i = 0; i < sz; i++) {
2217                 u32 rqn;
2218
2219                 if (rrp.is_rss) {
2220                         int ix = i;
2221
2222                         if (rrp.rss.hfunc == ETH_RSS_HASH_XOR)
2223                                 ix = mlx5e_bits_invert(i, ilog2(sz));
2224
2225                         ix = priv->channels.params.indirection_rqt[ix];
2226                         rqn = rrp.rss.channels->c[ix]->rq.rqn;
2227                 } else {
2228                         rqn = rrp.rqn;
2229                 }
2230                 MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
2231         }
2232 }
2233
2234 int mlx5e_redirect_rqt(struct mlx5e_priv *priv, u32 rqtn, int sz,
2235                        struct mlx5e_redirect_rqt_param rrp)
2236 {
2237         struct mlx5_core_dev *mdev = priv->mdev;
2238         void *rqtc;
2239         int inlen;
2240         u32 *in;
2241         int err;
2242
2243         inlen = MLX5_ST_SZ_BYTES(modify_rqt_in) + sizeof(u32) * sz;
2244         in = kvzalloc(inlen, GFP_KERNEL);
2245         if (!in)
2246                 return -ENOMEM;
2247
2248         rqtc = MLX5_ADDR_OF(modify_rqt_in, in, ctx);
2249
2250         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
2251         MLX5_SET(modify_rqt_in, in, bitmask.rqn_list, 1);
2252         mlx5e_fill_rqt_rqns(priv, sz, rrp, rqtc);
2253         err = mlx5_core_modify_rqt(mdev, rqtn, in, inlen);
2254
2255         kvfree(in);
2256         return err;
2257 }
2258
2259 static u32 mlx5e_get_direct_rqn(struct mlx5e_priv *priv, int ix,
2260                                 struct mlx5e_redirect_rqt_param rrp)
2261 {
2262         if (!rrp.is_rss)
2263                 return rrp.rqn;
2264
2265         if (ix >= rrp.rss.channels->num)
2266                 return priv->drop_rq.rqn;
2267
2268         return rrp.rss.channels->c[ix]->rq.rqn;
2269 }
2270
2271 static void mlx5e_redirect_rqts(struct mlx5e_priv *priv,
2272                                 struct mlx5e_redirect_rqt_param rrp)
2273 {
2274         u32 rqtn;
2275         int ix;
2276
2277         if (priv->indir_rqt.enabled) {
2278                 /* RSS RQ table */
2279                 rqtn = priv->indir_rqt.rqtn;
2280                 mlx5e_redirect_rqt(priv, rqtn, MLX5E_INDIR_RQT_SIZE, rrp);
2281         }
2282
2283         for (ix = 0; ix < priv->profile->max_nch(priv->mdev); ix++) {
2284                 struct mlx5e_redirect_rqt_param direct_rrp = {
2285                         .is_rss = false,
2286                         {
2287                                 .rqn    = mlx5e_get_direct_rqn(priv, ix, rrp)
2288                         },
2289                 };
2290
2291                 /* Direct RQ Tables */
2292                 if (!priv->direct_tir[ix].rqt.enabled)
2293                         continue;
2294
2295                 rqtn = priv->direct_tir[ix].rqt.rqtn;
2296                 mlx5e_redirect_rqt(priv, rqtn, 1, direct_rrp);
2297         }
2298 }
2299
2300 static void mlx5e_redirect_rqts_to_channels(struct mlx5e_priv *priv,
2301                                             struct mlx5e_channels *chs)
2302 {
2303         struct mlx5e_redirect_rqt_param rrp = {
2304                 .is_rss        = true,
2305                 {
2306                         .rss = {
2307                                 .channels  = chs,
2308                                 .hfunc     = chs->params.rss_hfunc,
2309                         }
2310                 },
2311         };
2312
2313         mlx5e_redirect_rqts(priv, rrp);
2314 }
2315
2316 static void mlx5e_redirect_rqts_to_drop(struct mlx5e_priv *priv)
2317 {
2318         struct mlx5e_redirect_rqt_param drop_rrp = {
2319                 .is_rss = false,
2320                 {
2321                         .rqn = priv->drop_rq.rqn,
2322                 },
2323         };
2324
2325         mlx5e_redirect_rqts(priv, drop_rrp);
2326 }
2327
2328 static void mlx5e_build_tir_ctx_lro(struct mlx5e_params *params, void *tirc)
2329 {
2330         if (!params->lro_en)
2331                 return;
2332
2333 #define ROUGH_MAX_L2_L3_HDR_SZ 256
2334
2335         MLX5_SET(tirc, tirc, lro_enable_mask,
2336                  MLX5_TIRC_LRO_ENABLE_MASK_IPV4_LRO |
2337                  MLX5_TIRC_LRO_ENABLE_MASK_IPV6_LRO);
2338         MLX5_SET(tirc, tirc, lro_max_ip_payload_size,
2339                  (params->lro_wqe_sz - ROUGH_MAX_L2_L3_HDR_SZ) >> 8);
2340         MLX5_SET(tirc, tirc, lro_timeout_period_usecs, params->lro_timeout);
2341 }
2342
2343 void mlx5e_build_indir_tir_ctx_hash(struct mlx5e_params *params,
2344                                     enum mlx5e_traffic_types tt,
2345                                     void *tirc, bool inner)
2346 {
2347         void *hfso = inner ? MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_inner) :
2348                              MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
2349
2350 #define MLX5_HASH_IP            (MLX5_HASH_FIELD_SEL_SRC_IP   |\
2351                                  MLX5_HASH_FIELD_SEL_DST_IP)
2352
2353 #define MLX5_HASH_IP_L4PORTS    (MLX5_HASH_FIELD_SEL_SRC_IP   |\
2354                                  MLX5_HASH_FIELD_SEL_DST_IP   |\
2355                                  MLX5_HASH_FIELD_SEL_L4_SPORT |\
2356                                  MLX5_HASH_FIELD_SEL_L4_DPORT)
2357
2358 #define MLX5_HASH_IP_IPSEC_SPI  (MLX5_HASH_FIELD_SEL_SRC_IP   |\
2359                                  MLX5_HASH_FIELD_SEL_DST_IP   |\
2360                                  MLX5_HASH_FIELD_SEL_IPSEC_SPI)
2361
2362         MLX5_SET(tirc, tirc, rx_hash_fn, mlx5e_rx_hash_fn(params->rss_hfunc));
2363         if (params->rss_hfunc == ETH_RSS_HASH_TOP) {
2364                 void *rss_key = MLX5_ADDR_OF(tirc, tirc,
2365                                              rx_hash_toeplitz_key);
2366                 size_t len = MLX5_FLD_SZ_BYTES(tirc,
2367                                                rx_hash_toeplitz_key);
2368
2369                 MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
2370                 memcpy(rss_key, params->toeplitz_hash_key, len);
2371         }
2372
2373         switch (tt) {
2374         case MLX5E_TT_IPV4_TCP:
2375                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2376                          MLX5_L3_PROT_TYPE_IPV4);
2377                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
2378                          MLX5_L4_PROT_TYPE_TCP);
2379                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2380                          MLX5_HASH_IP_L4PORTS);
2381                 break;
2382
2383         case MLX5E_TT_IPV6_TCP:
2384                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2385                          MLX5_L3_PROT_TYPE_IPV6);
2386                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
2387                          MLX5_L4_PROT_TYPE_TCP);
2388                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2389                          MLX5_HASH_IP_L4PORTS);
2390                 break;
2391
2392         case MLX5E_TT_IPV4_UDP:
2393                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2394                          MLX5_L3_PROT_TYPE_IPV4);
2395                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
2396                          MLX5_L4_PROT_TYPE_UDP);
2397                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2398                          MLX5_HASH_IP_L4PORTS);
2399                 break;
2400
2401         case MLX5E_TT_IPV6_UDP:
2402                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2403                          MLX5_L3_PROT_TYPE_IPV6);
2404                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
2405                          MLX5_L4_PROT_TYPE_UDP);
2406                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2407                          MLX5_HASH_IP_L4PORTS);
2408                 break;
2409
2410         case MLX5E_TT_IPV4_IPSEC_AH:
2411                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2412                          MLX5_L3_PROT_TYPE_IPV4);
2413                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2414                          MLX5_HASH_IP_IPSEC_SPI);
2415                 break;
2416
2417         case MLX5E_TT_IPV6_IPSEC_AH:
2418                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2419                          MLX5_L3_PROT_TYPE_IPV6);
2420                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2421                          MLX5_HASH_IP_IPSEC_SPI);
2422                 break;
2423
2424         case MLX5E_TT_IPV4_IPSEC_ESP:
2425                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2426                          MLX5_L3_PROT_TYPE_IPV4);
2427                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2428                          MLX5_HASH_IP_IPSEC_SPI);
2429                 break;
2430
2431         case MLX5E_TT_IPV6_IPSEC_ESP:
2432                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2433                          MLX5_L3_PROT_TYPE_IPV6);
2434                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2435                          MLX5_HASH_IP_IPSEC_SPI);
2436                 break;
2437
2438         case MLX5E_TT_IPV4:
2439                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2440                          MLX5_L3_PROT_TYPE_IPV4);
2441                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2442                          MLX5_HASH_IP);
2443                 break;
2444
2445         case MLX5E_TT_IPV6:
2446                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
2447                          MLX5_L3_PROT_TYPE_IPV6);
2448                 MLX5_SET(rx_hash_field_select, hfso, selected_fields,
2449                          MLX5_HASH_IP);
2450                 break;
2451         default:
2452                 WARN_ONCE(true, "%s: bad traffic type!\n", __func__);
2453         }
2454 }
2455
2456 static int mlx5e_modify_tirs_lro(struct mlx5e_priv *priv)
2457 {
2458         struct mlx5_core_dev *mdev = priv->mdev;
2459
2460         void *in;
2461         void *tirc;
2462         int inlen;
2463         int err;
2464         int tt;
2465         int ix;
2466
2467         inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
2468         in = kvzalloc(inlen, GFP_KERNEL);
2469         if (!in)
2470                 return -ENOMEM;
2471
2472         MLX5_SET(modify_tir_in, in, bitmask.lro, 1);
2473         tirc = MLX5_ADDR_OF(modify_tir_in, in, ctx);
2474
2475         mlx5e_build_tir_ctx_lro(&priv->channels.params, tirc);
2476
2477         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
2478                 err = mlx5_core_modify_tir(mdev, priv->indir_tir[tt].tirn, in,
2479                                            inlen);
2480                 if (err)
2481                         goto free_in;
2482         }
2483
2484         for (ix = 0; ix < priv->profile->max_nch(priv->mdev); ix++) {
2485                 err = mlx5_core_modify_tir(mdev, priv->direct_tir[ix].tirn,
2486                                            in, inlen);
2487                 if (err)
2488                         goto free_in;
2489         }
2490
2491 free_in:
2492         kvfree(in);
2493
2494         return err;
2495 }
2496
2497 static void mlx5e_build_inner_indir_tir_ctx(struct mlx5e_priv *priv,
2498                                             enum mlx5e_traffic_types tt,
2499                                             u32 *tirc)
2500 {
2501         MLX5_SET(tirc, tirc, transport_domain, priv->mdev->mlx5e_res.td.tdn);
2502
2503         mlx5e_build_tir_ctx_lro(&priv->channels.params, tirc);
2504
2505         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
2506         MLX5_SET(tirc, tirc, indirect_table, priv->indir_rqt.rqtn);
2507         MLX5_SET(tirc, tirc, tunneled_offload_en, 0x1);
2508
2509         mlx5e_build_indir_tir_ctx_hash(&priv->channels.params, tt, tirc, true);
2510 }
2511
2512 static int mlx5e_set_mtu(struct mlx5_core_dev *mdev,
2513                          struct mlx5e_params *params, u16 mtu)
2514 {
2515         u16 hw_mtu = MLX5E_SW2HW_MTU(params, mtu);
2516         int err;
2517
2518         err = mlx5_set_port_mtu(mdev, hw_mtu, 1);
2519         if (err)
2520                 return err;
2521
2522         /* Update vport context MTU */
2523         mlx5_modify_nic_vport_mtu(mdev, hw_mtu);
2524         return 0;
2525 }
2526
2527 static void mlx5e_query_mtu(struct mlx5_core_dev *mdev,
2528                             struct mlx5e_params *params, u16 *mtu)
2529 {
2530         u16 hw_mtu = 0;
2531         int err;
2532
2533         err = mlx5_query_nic_vport_mtu(mdev, &hw_mtu);
2534         if (err || !hw_mtu) /* fallback to port oper mtu */
2535                 mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1);
2536
2537         *mtu = MLX5E_HW2SW_MTU(params, hw_mtu);
2538 }
2539
2540 static int mlx5e_set_dev_port_mtu(struct mlx5e_priv *priv)
2541 {
2542         struct mlx5e_params *params = &priv->channels.params;
2543         struct net_device *netdev = priv->netdev;
2544         struct mlx5_core_dev *mdev = priv->mdev;
2545         u16 mtu;
2546         int err;
2547
2548         err = mlx5e_set_mtu(mdev, params, params->sw_mtu);
2549         if (err)
2550                 return err;
2551
2552         mlx5e_query_mtu(mdev, params, &mtu);
2553         if (mtu != params->sw_mtu)
2554                 netdev_warn(netdev, "%s: VPort MTU %d is different than netdev mtu %d\n",
2555                             __func__, mtu, params->sw_mtu);
2556
2557         params->sw_mtu = mtu;
2558         return 0;
2559 }
2560
2561 static void mlx5e_netdev_set_tcs(struct net_device *netdev)
2562 {
2563         struct mlx5e_priv *priv = netdev_priv(netdev);
2564         int nch = priv->channels.params.num_channels;
2565         int ntc = priv->channels.params.num_tc;
2566         int tc;
2567
2568         netdev_reset_tc(netdev);
2569
2570         if (ntc == 1)
2571                 return;
2572
2573         netdev_set_num_tc(netdev, ntc);
2574
2575         /* Map netdev TCs to offset 0
2576          * We have our own UP to TXQ mapping for QoS
2577          */
2578         for (tc = 0; tc < ntc; tc++)
2579                 netdev_set_tc_queue(netdev, tc, nch, 0);
2580 }
2581
2582 static void mlx5e_build_channels_tx_maps(struct mlx5e_priv *priv)
2583 {
2584         struct mlx5e_channel *c;
2585         struct mlx5e_txqsq *sq;
2586         int i, tc;
2587
2588         for (i = 0; i < priv->channels.num; i++)
2589                 for (tc = 0; tc < priv->profile->max_tc; tc++)
2590                         priv->channel_tc2txq[i][tc] = i + tc * priv->channels.num;
2591
2592         for (i = 0; i < priv->channels.num; i++) {
2593                 c = priv->channels.c[i];
2594                 for (tc = 0; tc < c->num_tc; tc++) {
2595                         sq = &c->sq[tc];
2596                         priv->txq2sq[sq->txq_ix] = sq;
2597                 }
2598         }
2599 }
2600
2601 void mlx5e_activate_priv_channels(struct mlx5e_priv *priv)
2602 {
2603         int num_txqs = priv->channels.num * priv->channels.params.num_tc;
2604         struct net_device *netdev = priv->netdev;
2605
2606         mlx5e_netdev_set_tcs(netdev);
2607         netif_set_real_num_tx_queues(netdev, num_txqs);
2608         netif_set_real_num_rx_queues(netdev, priv->channels.num);
2609
2610         mlx5e_build_channels_tx_maps(priv);
2611         mlx5e_activate_channels(&priv->channels);
2612         netif_tx_start_all_queues(priv->netdev);
2613
2614         if (MLX5_VPORT_MANAGER(priv->mdev))
2615                 mlx5e_add_sqs_fwd_rules(priv);
2616
2617         mlx5e_wait_channels_min_rx_wqes(&priv->channels);
2618         mlx5e_redirect_rqts_to_channels(priv, &priv->channels);
2619 }
2620
2621 void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv)
2622 {
2623         mlx5e_redirect_rqts_to_drop(priv);
2624
2625         if (MLX5_VPORT_MANAGER(priv->mdev))
2626                 mlx5e_remove_sqs_fwd_rules(priv);
2627
2628         /* FIXME: This is a W/A only for tx timeout watch dog false alarm when
2629          * polling for inactive tx queues.
2630          */
2631         netif_tx_stop_all_queues(priv->netdev);
2632         netif_tx_disable(priv->netdev);
2633         mlx5e_deactivate_channels(&priv->channels);
2634 }
2635
2636 void mlx5e_switch_priv_channels(struct mlx5e_priv *priv,
2637                                 struct mlx5e_channels *new_chs,
2638                                 mlx5e_fp_hw_modify hw_modify)
2639 {
2640         struct net_device *netdev = priv->netdev;
2641         int new_num_txqs;
2642         int carrier_ok;
2643         new_num_txqs = new_chs->num * new_chs->params.num_tc;
2644
2645         carrier_ok = netif_carrier_ok(netdev);
2646         netif_carrier_off(netdev);
2647
2648         if (new_num_txqs < netdev->real_num_tx_queues)
2649                 netif_set_real_num_tx_queues(netdev, new_num_txqs);
2650
2651         mlx5e_deactivate_priv_channels(priv);
2652         mlx5e_close_channels(&priv->channels);
2653
2654         priv->channels = *new_chs;
2655
2656         /* New channels are ready to roll, modify HW settings if needed */
2657         if (hw_modify)
2658                 hw_modify(priv);
2659
2660         mlx5e_refresh_tirs(priv, false);
2661         mlx5e_activate_priv_channels(priv);
2662
2663         /* return carrier back if needed */
2664         if (carrier_ok)
2665                 netif_carrier_on(netdev);
2666 }
2667
2668 void mlx5e_timestamp_init(struct mlx5e_priv *priv)
2669 {
2670         priv->tstamp.tx_type   = HWTSTAMP_TX_OFF;
2671         priv->tstamp.rx_filter = HWTSTAMP_FILTER_NONE;
2672 }
2673
2674 int mlx5e_open_locked(struct net_device *netdev)
2675 {
2676         struct mlx5e_priv *priv = netdev_priv(netdev);
2677         int err;
2678
2679         set_bit(MLX5E_STATE_OPENED, &priv->state);
2680
2681         err = mlx5e_open_channels(priv, &priv->channels);
2682         if (err)
2683                 goto err_clear_state_opened_flag;
2684
2685         mlx5e_refresh_tirs(priv, false);
2686         mlx5e_activate_priv_channels(priv);
2687         if (priv->profile->update_carrier)
2688                 priv->profile->update_carrier(priv);
2689
2690         if (priv->profile->update_stats)
2691                 queue_delayed_work(priv->wq, &priv->update_stats_work, 0);
2692
2693         return 0;
2694
2695 err_clear_state_opened_flag:
2696         clear_bit(MLX5E_STATE_OPENED, &priv->state);
2697         return err;
2698 }
2699
2700 int mlx5e_open(struct net_device *netdev)
2701 {
2702         struct mlx5e_priv *priv = netdev_priv(netdev);
2703         int err;
2704
2705         mutex_lock(&priv->state_lock);
2706         err = mlx5e_open_locked(netdev);
2707         if (!err)
2708                 mlx5_set_port_admin_status(priv->mdev, MLX5_PORT_UP);
2709         mutex_unlock(&priv->state_lock);
2710
2711         if (mlx5e_vxlan_allowed(priv->mdev))
2712                 udp_tunnel_get_rx_info(netdev);
2713
2714         return err;
2715 }
2716
2717 int mlx5e_close_locked(struct net_device *netdev)
2718 {
2719         struct mlx5e_priv *priv = netdev_priv(netdev);
2720
2721         /* May already be CLOSED in case a previous configuration operation
2722          * (e.g RX/TX queue size change) that involves close&open failed.
2723          */
2724         if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
2725                 return 0;
2726
2727         clear_bit(MLX5E_STATE_OPENED, &priv->state);
2728
2729         netif_carrier_off(priv->netdev);
2730         mlx5e_deactivate_priv_channels(priv);
2731         mlx5e_close_channels(&priv->channels);
2732
2733         return 0;
2734 }
2735
2736 int mlx5e_close(struct net_device *netdev)
2737 {
2738         struct mlx5e_priv *priv = netdev_priv(netdev);
2739         int err;
2740
2741         if (!netif_device_present(netdev))
2742                 return -ENODEV;
2743
2744         mutex_lock(&priv->state_lock);
2745         mlx5_set_port_admin_status(priv->mdev, MLX5_PORT_DOWN);
2746         err = mlx5e_close_locked(netdev);
2747         mutex_unlock(&priv->state_lock);
2748
2749         return err;
2750 }
2751
2752 static int mlx5e_alloc_drop_rq(struct mlx5_core_dev *mdev,
2753                                struct mlx5e_rq *rq,
2754                                struct mlx5e_rq_param *param)
2755 {
2756         void *rqc = param->rqc;
2757         void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
2758         int err;
2759
2760         param->wq.db_numa_node = param->wq.buf_numa_node;
2761
2762         err = mlx5_wq_ll_create(mdev, &param->wq, rqc_wq, &rq->wq,
2763                                 &rq->wq_ctrl);
2764         if (err)
2765                 return err;
2766
2767         /* Mark as unused given "Drop-RQ" packets never reach XDP */
2768         xdp_rxq_info_unused(&rq->xdp_rxq);
2769
2770         rq->mdev = mdev;
2771
2772         return 0;
2773 }
2774
2775 static int mlx5e_alloc_drop_cq(struct mlx5_core_dev *mdev,
2776                                struct mlx5e_cq *cq,
2777                                struct mlx5e_cq_param *param)
2778 {
2779         param->wq.buf_numa_node = dev_to_node(&mdev->pdev->dev);
2780         param->wq.db_numa_node  = dev_to_node(&mdev->pdev->dev);
2781
2782         return mlx5e_alloc_cq_common(mdev, param, cq);
2783 }
2784
2785 static int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
2786                               struct mlx5e_rq *drop_rq)
2787 {
2788         struct mlx5_core_dev *mdev = priv->mdev;
2789         struct mlx5e_cq_param cq_param = {};
2790         struct mlx5e_rq_param rq_param = {};
2791         struct mlx5e_cq *cq = &drop_rq->cq;
2792         int err;
2793
2794         mlx5e_build_drop_rq_param(priv, &rq_param);
2795
2796         err = mlx5e_alloc_drop_cq(mdev, cq, &cq_param);
2797         if (err)
2798                 return err;
2799
2800         err = mlx5e_create_cq(cq, &cq_param);
2801         if (err)
2802                 goto err_free_cq;
2803
2804         err = mlx5e_alloc_drop_rq(mdev, drop_rq, &rq_param);
2805         if (err)
2806                 goto err_destroy_cq;
2807
2808         err = mlx5e_create_rq(drop_rq, &rq_param);
2809         if (err)
2810                 goto err_free_rq;
2811
2812         err = mlx5e_modify_rq_state(drop_rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
2813         if (err)
2814                 mlx5_core_warn(priv->mdev, "modify_rq_state failed, rx_if_down_packets won't be counted %d\n", err);
2815
2816         return 0;
2817
2818 err_free_rq:
2819         mlx5e_free_rq(drop_rq);
2820
2821 err_destroy_cq:
2822         mlx5e_destroy_cq(cq);
2823
2824 err_free_cq:
2825         mlx5e_free_cq(cq);
2826
2827         return err;
2828 }
2829
2830 static void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq)
2831 {
2832         mlx5e_destroy_rq(drop_rq);
2833         mlx5e_free_rq(drop_rq);
2834         mlx5e_destroy_cq(&drop_rq->cq);
2835         mlx5e_free_cq(&drop_rq->cq);
2836 }
2837
2838 int mlx5e_create_tis(struct mlx5_core_dev *mdev, int tc,
2839                      u32 underlay_qpn, u32 *tisn)
2840 {
2841         u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
2842         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
2843
2844         MLX5_SET(tisc, tisc, prio, tc << 1);
2845         MLX5_SET(tisc, tisc, underlay_qpn, underlay_qpn);
2846         MLX5_SET(tisc, tisc, transport_domain, mdev->mlx5e_res.td.tdn);
2847
2848         if (mlx5_lag_is_lacp_owner(mdev))
2849                 MLX5_SET(tisc, tisc, strict_lag_tx_port_affinity, 1);
2850
2851         return mlx5_core_create_tis(mdev, in, sizeof(in), tisn);
2852 }
2853
2854 void mlx5e_destroy_tis(struct mlx5_core_dev *mdev, u32 tisn)
2855 {
2856         mlx5_core_destroy_tis(mdev, tisn);
2857 }
2858
2859 int mlx5e_create_tises(struct mlx5e_priv *priv)
2860 {
2861         int err;
2862         int tc;
2863
2864         for (tc = 0; tc < priv->profile->max_tc; tc++) {
2865                 err = mlx5e_create_tis(priv->mdev, tc, 0, &priv->tisn[tc]);
2866                 if (err)
2867                         goto err_close_tises;
2868         }
2869
2870         return 0;
2871
2872 err_close_tises:
2873         for (tc--; tc >= 0; tc--)
2874                 mlx5e_destroy_tis(priv->mdev, priv->tisn[tc]);
2875
2876         return err;
2877 }
2878
2879 void mlx5e_cleanup_nic_tx(struct mlx5e_priv *priv)
2880 {
2881         int tc;
2882
2883         for (tc = 0; tc < priv->profile->max_tc; tc++)
2884                 mlx5e_destroy_tis(priv->mdev, priv->tisn[tc]);
2885 }
2886
2887 static void mlx5e_build_indir_tir_ctx(struct mlx5e_priv *priv,
2888                                       enum mlx5e_traffic_types tt,
2889                                       u32 *tirc)
2890 {
2891         MLX5_SET(tirc, tirc, transport_domain, priv->mdev->mlx5e_res.td.tdn);
2892
2893         mlx5e_build_tir_ctx_lro(&priv->channels.params, tirc);
2894
2895         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
2896         MLX5_SET(tirc, tirc, indirect_table, priv->indir_rqt.rqtn);
2897         mlx5e_build_indir_tir_ctx_hash(&priv->channels.params, tt, tirc, false);
2898 }
2899
2900 static void mlx5e_build_direct_tir_ctx(struct mlx5e_priv *priv, u32 rqtn, u32 *tirc)
2901 {
2902         MLX5_SET(tirc, tirc, transport_domain, priv->mdev->mlx5e_res.td.tdn);
2903
2904         mlx5e_build_tir_ctx_lro(&priv->channels.params, tirc);
2905
2906         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
2907         MLX5_SET(tirc, tirc, indirect_table, rqtn);
2908         MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_INVERTED_XOR8);
2909 }
2910
2911 int mlx5e_create_indirect_tirs(struct mlx5e_priv *priv)
2912 {
2913         struct mlx5e_tir *tir;
2914         void *tirc;
2915         int inlen;
2916         int i = 0;
2917         int err;
2918         u32 *in;
2919         int tt;
2920
2921         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
2922         in = kvzalloc(inlen, GFP_KERNEL);
2923         if (!in)
2924                 return -ENOMEM;
2925
2926         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
2927                 memset(in, 0, inlen);
2928                 tir = &priv->indir_tir[tt];
2929                 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
2930                 mlx5e_build_indir_tir_ctx(priv, tt, tirc);
2931                 err = mlx5e_create_tir(priv->mdev, tir, in, inlen);
2932                 if (err) {
2933                         mlx5_core_warn(priv->mdev, "create indirect tirs failed, %d\n", err);
2934                         goto err_destroy_inner_tirs;
2935                 }
2936         }
2937
2938         if (!mlx5e_tunnel_inner_ft_supported(priv->mdev))
2939                 goto out;
2940
2941         for (i = 0; i < MLX5E_NUM_INDIR_TIRS; i++) {
2942                 memset(in, 0, inlen);
2943                 tir = &priv->inner_indir_tir[i];
2944                 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
2945                 mlx5e_build_inner_indir_tir_ctx(priv, i, tirc);
2946                 err = mlx5e_create_tir(priv->mdev, tir, in, inlen);
2947                 if (err) {
2948                         mlx5_core_warn(priv->mdev, "create inner indirect tirs failed, %d\n", err);
2949                         goto err_destroy_inner_tirs;
2950                 }
2951         }
2952
2953 out:
2954         kvfree(in);
2955
2956         return 0;
2957
2958 err_destroy_inner_tirs:
2959         for (i--; i >= 0; i--)
2960                 mlx5e_destroy_tir(priv->mdev, &priv->inner_indir_tir[i]);
2961
2962         for (tt--; tt >= 0; tt--)
2963                 mlx5e_destroy_tir(priv->mdev, &priv->indir_tir[tt]);
2964
2965         kvfree(in);
2966
2967         return err;
2968 }
2969
2970 int mlx5e_create_direct_tirs(struct mlx5e_priv *priv)
2971 {
2972         int nch = priv->profile->max_nch(priv->mdev);
2973         struct mlx5e_tir *tir;
2974         void *tirc;
2975         int inlen;
2976         int err;
2977         u32 *in;
2978         int ix;
2979
2980         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
2981         in = kvzalloc(inlen, GFP_KERNEL);
2982         if (!in)
2983                 return -ENOMEM;
2984
2985         for (ix = 0; ix < nch; ix++) {
2986                 memset(in, 0, inlen);
2987                 tir = &priv->direct_tir[ix];
2988                 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
2989                 mlx5e_build_direct_tir_ctx(priv, priv->direct_tir[ix].rqt.rqtn, tirc);
2990                 err = mlx5e_create_tir(priv->mdev, tir, in, inlen);
2991                 if (err)
2992                         goto err_destroy_ch_tirs;
2993         }
2994
2995         kvfree(in);
2996
2997         return 0;
2998
2999 err_destroy_ch_tirs:
3000         mlx5_core_warn(priv->mdev, "create direct tirs failed, %d\n", err);
3001         for (ix--; ix >= 0; ix--)
3002                 mlx5e_destroy_tir(priv->mdev, &priv->direct_tir[ix]);
3003
3004         kvfree(in);
3005
3006         return err;
3007 }
3008
3009 void mlx5e_destroy_indirect_tirs(struct mlx5e_priv *priv)
3010 {
3011         int i;
3012
3013         for (i = 0; i < MLX5E_NUM_INDIR_TIRS; i++)
3014                 mlx5e_destroy_tir(priv->mdev, &priv->indir_tir[i]);
3015
3016         if (!mlx5e_tunnel_inner_ft_supported(priv->mdev))
3017                 return;
3018
3019         for (i = 0; i < MLX5E_NUM_INDIR_TIRS; i++)
3020                 mlx5e_destroy_tir(priv->mdev, &priv->inner_indir_tir[i]);
3021 }
3022
3023 void mlx5e_destroy_direct_tirs(struct mlx5e_priv *priv)
3024 {
3025         int nch = priv->profile->max_nch(priv->mdev);
3026         int i;
3027
3028         for (i = 0; i < nch; i++)
3029                 mlx5e_destroy_tir(priv->mdev, &priv->direct_tir[i]);
3030 }
3031
3032 static int mlx5e_modify_channels_scatter_fcs(struct mlx5e_channels *chs, bool enable)
3033 {
3034         int err = 0;
3035         int i;
3036
3037         for (i = 0; i < chs->num; i++) {
3038                 err = mlx5e_modify_rq_scatter_fcs(&chs->c[i]->rq, enable);
3039                 if (err)
3040                         return err;
3041         }
3042
3043         return 0;
3044 }
3045
3046 static int mlx5e_modify_channels_vsd(struct mlx5e_channels *chs, bool vsd)
3047 {
3048         int err = 0;
3049         int i;
3050
3051         for (i = 0; i < chs->num; i++) {
3052                 err = mlx5e_modify_rq_vsd(&chs->c[i]->rq, vsd);
3053                 if (err)
3054                         return err;
3055         }
3056
3057         return 0;
3058 }
3059
3060 static int mlx5e_setup_tc_mqprio(struct net_device *netdev,
3061                                  struct tc_mqprio_qopt *mqprio)
3062 {
3063         struct mlx5e_priv *priv = netdev_priv(netdev);
3064         struct mlx5e_channels new_channels = {};
3065         u8 tc = mqprio->num_tc;
3066         int err = 0;
3067
3068         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
3069
3070         if (tc && tc != MLX5E_MAX_NUM_TC)
3071                 return -EINVAL;
3072
3073         mutex_lock(&priv->state_lock);
3074
3075         new_channels.params = priv->channels.params;
3076         new_channels.params.num_tc = tc ? tc : 1;
3077
3078         if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
3079                 priv->channels.params = new_channels.params;
3080                 goto out;
3081         }
3082
3083         err = mlx5e_open_channels(priv, &new_channels);
3084         if (err)
3085                 goto out;
3086
3087         mlx5e_switch_priv_channels(priv, &new_channels, NULL);
3088 out:
3089         mutex_unlock(&priv->state_lock);
3090         return err;
3091 }
3092
3093 #ifdef CONFIG_MLX5_ESWITCH
3094 static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv,
3095                                      struct tc_cls_flower_offload *cls_flower)
3096 {
3097         switch (cls_flower->command) {
3098         case TC_CLSFLOWER_REPLACE:
3099                 return mlx5e_configure_flower(priv, cls_flower);
3100         case TC_CLSFLOWER_DESTROY:
3101                 return mlx5e_delete_flower(priv, cls_flower);
3102         case TC_CLSFLOWER_STATS:
3103                 return mlx5e_stats_flower(priv, cls_flower);
3104         default:
3105                 return -EOPNOTSUPP;
3106         }
3107 }
3108
3109 int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
3110                             void *cb_priv)
3111 {
3112         struct mlx5e_priv *priv = cb_priv;
3113
3114         if (!tc_cls_can_offload_and_chain0(priv->netdev, type_data))
3115                 return -EOPNOTSUPP;
3116
3117         switch (type) {
3118         case TC_SETUP_CLSFLOWER:
3119                 return mlx5e_setup_tc_cls_flower(priv, type_data);
3120         default:
3121                 return -EOPNOTSUPP;
3122         }
3123 }
3124
3125 static int mlx5e_setup_tc_block(struct net_device *dev,
3126                                 struct tc_block_offload *f)
3127 {
3128         struct mlx5e_priv *priv = netdev_priv(dev);
3129
3130         if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
3131                 return -EOPNOTSUPP;
3132
3133         switch (f->command) {
3134         case TC_BLOCK_BIND:
3135                 return tcf_block_cb_register(f->block, mlx5e_setup_tc_block_cb,
3136                                              priv, priv);
3137         case TC_BLOCK_UNBIND:
3138                 tcf_block_cb_unregister(f->block, mlx5e_setup_tc_block_cb,
3139                                         priv);
3140                 return 0;
3141         default:
3142                 return -EOPNOTSUPP;
3143         }
3144 }
3145 #endif
3146
3147 static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type,
3148                           void *type_data)
3149 {
3150         switch (type) {
3151 #ifdef CONFIG_MLX5_ESWITCH
3152         case TC_SETUP_BLOCK:
3153                 return mlx5e_setup_tc_block(dev, type_data);
3154 #endif
3155         case TC_SETUP_QDISC_MQPRIO:
3156                 return mlx5e_setup_tc_mqprio(dev, type_data);
3157         default:
3158                 return -EOPNOTSUPP;
3159         }
3160 }
3161
3162 static void
3163 mlx5e_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
3164 {
3165         struct mlx5e_priv *priv = netdev_priv(dev);
3166         struct mlx5e_sw_stats *sstats = &priv->stats.sw;
3167         struct mlx5e_vport_stats *vstats = &priv->stats.vport;
3168         struct mlx5e_pport_stats *pstats = &priv->stats.pport;
3169
3170         if (mlx5e_is_uplink_rep(priv)) {
3171                 stats->rx_packets = PPORT_802_3_GET(pstats, a_frames_received_ok);
3172                 stats->rx_bytes   = PPORT_802_3_GET(pstats, a_octets_received_ok);
3173                 stats->tx_packets = PPORT_802_3_GET(pstats, a_frames_transmitted_ok);
3174                 stats->tx_bytes   = PPORT_802_3_GET(pstats, a_octets_transmitted_ok);
3175         } else {
3176                 stats->rx_packets = sstats->rx_packets;
3177                 stats->rx_bytes   = sstats->rx_bytes;
3178                 stats->tx_packets = sstats->tx_packets;
3179                 stats->tx_bytes   = sstats->tx_bytes;
3180                 stats->tx_dropped = sstats->tx_queue_dropped;
3181         }
3182
3183         stats->rx_dropped = priv->stats.qcnt.rx_out_of_buffer;
3184
3185         stats->rx_length_errors =
3186                 PPORT_802_3_GET(pstats, a_in_range_length_errors) +
3187                 PPORT_802_3_GET(pstats, a_out_of_range_length_field) +
3188                 PPORT_802_3_GET(pstats, a_frame_too_long_errors);
3189         stats->rx_crc_errors =
3190                 PPORT_802_3_GET(pstats, a_frame_check_sequence_errors);
3191         stats->rx_frame_errors = PPORT_802_3_GET(pstats, a_alignment_errors);
3192         stats->tx_aborted_errors = PPORT_2863_GET(pstats, if_out_discards);
3193         stats->rx_errors = stats->rx_length_errors + stats->rx_crc_errors +
3194                            stats->rx_frame_errors;
3195         stats->tx_errors = stats->tx_aborted_errors + stats->tx_carrier_errors;
3196
3197         /* vport multicast also counts packets that are dropped due to steering
3198          * or rx out of buffer
3199          */
3200         stats->multicast =
3201                 VPORT_COUNTER_GET(vstats, received_eth_multicast.packets);
3202 }
3203
3204 static void mlx5e_set_rx_mode(struct net_device *dev)
3205 {
3206         struct mlx5e_priv *priv = netdev_priv(dev);
3207
3208         queue_work(priv->wq, &priv->set_rx_mode_work);
3209 }
3210
3211 static int mlx5e_set_mac(struct net_device *netdev, void *addr)
3212 {
3213         struct mlx5e_priv *priv = netdev_priv(netdev);
3214         struct sockaddr *saddr = addr;
3215
3216         if (!is_valid_ether_addr(saddr->sa_data))
3217                 return -EADDRNOTAVAIL;
3218
3219         netif_addr_lock_bh(netdev);
3220         ether_addr_copy(netdev->dev_addr, saddr->sa_data);
3221         netif_addr_unlock_bh(netdev);
3222
3223         queue_work(priv->wq, &priv->set_rx_mode_work);
3224
3225         return 0;
3226 }
3227
3228 #define MLX5E_SET_FEATURE(features, feature, enable)    \
3229         do {                                            \
3230                 if (enable)                             \
3231                         *features |= feature;           \
3232                 else                                    \
3233                         *features &= ~feature;          \
3234         } while (0)
3235
3236 typedef int (*mlx5e_feature_handler)(struct net_device *netdev, bool enable);
3237
3238 static int set_feature_lro(struct net_device *netdev, bool enable)
3239 {
3240         struct mlx5e_priv *priv = netdev_priv(netdev);
3241         struct mlx5_core_dev *mdev = priv->mdev;
3242         struct mlx5e_channels new_channels = {};
3243         struct mlx5e_params *old_params;
3244         int err = 0;
3245         bool reset;
3246
3247         mutex_lock(&priv->state_lock);
3248
3249         old_params = &priv->channels.params;
3250         reset = test_bit(MLX5E_STATE_OPENED, &priv->state);
3251
3252         new_channels.params = *old_params;
3253         new_channels.params.lro_en = enable;
3254
3255         if (old_params->rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST) {
3256                 if (mlx5e_rx_mpwqe_is_linear_skb(mdev, old_params) ==
3257                     mlx5e_rx_mpwqe_is_linear_skb(mdev, &new_channels.params))
3258                         reset = false;
3259         }
3260
3261         if (!reset) {
3262                 *old_params = new_channels.params;
3263                 err = mlx5e_modify_tirs_lro(priv);
3264                 goto out;
3265         }
3266
3267         err = mlx5e_open_channels(priv, &new_channels);
3268         if (err)
3269                 goto out;
3270
3271         mlx5e_switch_priv_channels(priv, &new_channels, mlx5e_modify_tirs_lro);
3272 out:
3273         mutex_unlock(&priv->state_lock);
3274         return err;
3275 }
3276
3277 static int set_feature_cvlan_filter(struct net_device *netdev, bool enable)
3278 {
3279         struct mlx5e_priv *priv = netdev_priv(netdev);
3280
3281         if (enable)
3282                 mlx5e_enable_cvlan_filter(priv);
3283         else
3284                 mlx5e_disable_cvlan_filter(priv);
3285
3286         return 0;
3287 }
3288
3289 static int set_feature_tc_num_filters(struct net_device *netdev, bool enable)
3290 {
3291         struct mlx5e_priv *priv = netdev_priv(netdev);
3292
3293         if (!enable && mlx5e_tc_num_filters(priv)) {
3294                 netdev_err(netdev,
3295                            "Active offloaded tc filters, can't turn hw_tc_offload off\n");
3296                 return -EINVAL;
3297         }
3298
3299         return 0;
3300 }
3301
3302 static int set_feature_rx_all(struct net_device *netdev, bool enable)
3303 {
3304         struct mlx5e_priv *priv = netdev_priv(netdev);
3305         struct mlx5_core_dev *mdev = priv->mdev;
3306
3307         return mlx5_set_port_fcs(mdev, !enable);
3308 }
3309
3310 static int set_feature_rx_fcs(struct net_device *netdev, bool enable)
3311 {
3312         struct mlx5e_priv *priv = netdev_priv(netdev);
3313         int err;
3314
3315         mutex_lock(&priv->state_lock);
3316
3317         priv->channels.params.scatter_fcs_en = enable;
3318         err = mlx5e_modify_channels_scatter_fcs(&priv->channels, enable);
3319         if (err)
3320                 priv->channels.params.scatter_fcs_en = !enable;
3321
3322         mutex_unlock(&priv->state_lock);
3323
3324         return err;
3325 }
3326
3327 static int set_feature_rx_vlan(struct net_device *netdev, bool enable)
3328 {
3329         struct mlx5e_priv *priv = netdev_priv(netdev);
3330         int err = 0;
3331
3332         mutex_lock(&priv->state_lock);
3333
3334         priv->channels.params.vlan_strip_disable = !enable;
3335         if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
3336                 goto unlock;
3337
3338         err = mlx5e_modify_channels_vsd(&priv->channels, !enable);
3339         if (err)
3340                 priv->channels.params.vlan_strip_disable = enable;
3341
3342 unlock:
3343         mutex_unlock(&priv->state_lock);
3344
3345         return err;
3346 }
3347
3348 #ifdef CONFIG_RFS_ACCEL
3349 static int set_feature_arfs(struct net_device *netdev, bool enable)
3350 {
3351         struct mlx5e_priv *priv = netdev_priv(netdev);
3352         int err;
3353
3354         if (enable)
3355                 err = mlx5e_arfs_enable(priv);
3356         else
3357                 err = mlx5e_arfs_disable(priv);
3358
3359         return err;
3360 }
3361 #endif
3362
3363 static int mlx5e_handle_feature(struct net_device *netdev,
3364                                 netdev_features_t *features,
3365                                 netdev_features_t wanted_features,
3366                                 netdev_features_t feature,
3367                                 mlx5e_feature_handler feature_handler)
3368 {
3369         netdev_features_t changes = wanted_features ^ netdev->features;
3370         bool enable = !!(wanted_features & feature);
3371         int err;
3372
3373         if (!(changes & feature))
3374                 return 0;
3375
3376         err = feature_handler(netdev, enable);
3377         if (err) {
3378                 netdev_err(netdev, "%s feature %pNF failed, err %d\n",
3379                            enable ? "Enable" : "Disable", &feature, err);
3380                 return err;
3381         }
3382
3383         MLX5E_SET_FEATURE(features, feature, enable);
3384         return 0;
3385 }
3386
3387 static int mlx5e_set_features(struct net_device *netdev,
3388                               netdev_features_t features)
3389 {
3390         netdev_features_t oper_features = netdev->features;
3391         int err = 0;
3392
3393 #define MLX5E_HANDLE_FEATURE(feature, handler) \
3394         mlx5e_handle_feature(netdev, &oper_features, features, feature, handler)
3395
3396         err |= MLX5E_HANDLE_FEATURE(NETIF_F_LRO, set_feature_lro);
3397         err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_FILTER,
3398                                     set_feature_cvlan_filter);
3399         err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_TC, set_feature_tc_num_filters);
3400         err |= MLX5E_HANDLE_FEATURE(NETIF_F_RXALL, set_feature_rx_all);
3401         err |= MLX5E_HANDLE_FEATURE(NETIF_F_RXFCS, set_feature_rx_fcs);
3402         err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_RX, set_feature_rx_vlan);
3403 #ifdef CONFIG_RFS_ACCEL
3404         err |= MLX5E_HANDLE_FEATURE(NETIF_F_NTUPLE, set_feature_arfs);
3405 #endif
3406
3407         if (err) {
3408                 netdev->features = oper_features;
3409                 return -EINVAL;
3410         }
3411
3412         return 0;
3413 }
3414
3415 static netdev_features_t mlx5e_fix_features(struct net_device *netdev,
3416                                             netdev_features_t features)
3417 {
3418         struct mlx5e_priv *priv = netdev_priv(netdev);
3419
3420         mutex_lock(&priv->state_lock);
3421         if (!bitmap_empty(priv->fs.vlan.active_svlans, VLAN_N_VID)) {
3422                 /* HW strips the outer C-tag header, this is a problem
3423                  * for S-tag traffic.
3424                  */
3425                 features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3426                 if (!priv->channels.params.vlan_strip_disable)
3427                         netdev_warn(netdev, "Dropping C-tag vlan stripping offload due to S-tag vlan\n");
3428         }
3429         mutex_unlock(&priv->state_lock);
3430
3431         return features;
3432 }
3433
3434 static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu)
3435 {
3436         struct mlx5e_priv *priv = netdev_priv(netdev);
3437         struct mlx5e_channels new_channels = {};
3438         struct mlx5e_params *params;
3439         int err = 0;
3440         bool reset;
3441
3442         mutex_lock(&priv->state_lock);
3443
3444         params = &priv->channels.params;
3445
3446         reset = !params->lro_en;
3447         reset = reset && test_bit(MLX5E_STATE_OPENED, &priv->state);
3448
3449         new_channels.params = *params;
3450         new_channels.params.sw_mtu = new_mtu;
3451
3452         if (params->rq_wq_type != MLX5_WQ_TYPE_LINKED_LIST) {
3453                 u8 ppw_old = mlx5e_mpwqe_log_pkts_per_wqe(params);
3454                 u8 ppw_new = mlx5e_mpwqe_log_pkts_per_wqe(&new_channels.params);
3455
3456                 reset = reset && (ppw_old != ppw_new);
3457         }
3458
3459         if (!reset) {
3460                 params->sw_mtu = new_mtu;
3461                 mlx5e_set_dev_port_mtu(priv);
3462                 netdev->mtu = params->sw_mtu;
3463                 goto out;
3464         }
3465
3466         err = mlx5e_open_channels(priv, &new_channels);
3467         if (err)
3468                 goto out;
3469
3470         mlx5e_switch_priv_channels(priv, &new_channels, mlx5e_set_dev_port_mtu);
3471         netdev->mtu = new_channels.params.sw_mtu;
3472
3473 out:
3474         mutex_unlock(&priv->state_lock);
3475         return err;
3476 }
3477
3478 int mlx5e_hwstamp_set(struct mlx5e_priv *priv, struct ifreq *ifr)
3479 {
3480         struct hwtstamp_config config;
3481         int err;
3482
3483         if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
3484                 return -EOPNOTSUPP;
3485
3486         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
3487                 return -EFAULT;
3488
3489         /* TX HW timestamp */
3490         switch (config.tx_type) {
3491         case HWTSTAMP_TX_OFF:
3492         case HWTSTAMP_TX_ON:
3493                 break;
3494         default:
3495                 return -ERANGE;
3496         }
3497
3498         mutex_lock(&priv->state_lock);
3499         /* RX HW timestamp */
3500         switch (config.rx_filter) {
3501         case HWTSTAMP_FILTER_NONE:
3502                 /* Reset CQE compression to Admin default */
3503                 mlx5e_modify_rx_cqe_compression_locked(priv, priv->channels.params.rx_cqe_compress_def);
3504                 break;
3505         case HWTSTAMP_FILTER_ALL:
3506         case HWTSTAMP_FILTER_SOME:
3507         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
3508         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
3509         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
3510         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
3511         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
3512         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
3513         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
3514         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
3515         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
3516         case HWTSTAMP_FILTER_PTP_V2_EVENT:
3517         case HWTSTAMP_FILTER_PTP_V2_SYNC:
3518         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3519         case HWTSTAMP_FILTER_NTP_ALL:
3520                 /* Disable CQE compression */
3521                 netdev_warn(priv->netdev, "Disabling cqe compression");
3522                 err = mlx5e_modify_rx_cqe_compression_locked(priv, false);
3523                 if (err) {
3524                         netdev_err(priv->netdev, "Failed disabling cqe compression err=%d\n", err);
3525                         mutex_unlock(&priv->state_lock);
3526                         return err;
3527                 }
3528                 config.rx_filter = HWTSTAMP_FILTER_ALL;
3529                 break;
3530         default:
3531                 mutex_unlock(&priv->state_lock);
3532                 return -ERANGE;
3533         }
3534
3535         memcpy(&priv->tstamp, &config, sizeof(config));
3536         mutex_unlock(&priv->state_lock);
3537
3538         return copy_to_user(ifr->ifr_data, &config,
3539                             sizeof(config)) ? -EFAULT : 0;
3540 }
3541
3542 int mlx5e_hwstamp_get(struct mlx5e_priv *priv, struct ifreq *ifr)
3543 {
3544         struct hwtstamp_config *cfg = &priv->tstamp;
3545
3546         if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
3547                 return -EOPNOTSUPP;
3548
3549         return copy_to_user(ifr->ifr_data, cfg, sizeof(*cfg)) ? -EFAULT : 0;
3550 }
3551
3552 static int mlx5e_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
3553 {
3554         struct mlx5e_priv *priv = netdev_priv(dev);
3555
3556         switch (cmd) {
3557         case SIOCSHWTSTAMP:
3558                 return mlx5e_hwstamp_set(priv, ifr);
3559         case SIOCGHWTSTAMP:
3560                 return mlx5e_hwstamp_get(priv, ifr);
3561         default:
3562                 return -EOPNOTSUPP;
3563         }
3564 }
3565
3566 #ifdef CONFIG_MLX5_ESWITCH
3567 static int mlx5e_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
3568 {
3569         struct mlx5e_priv *priv = netdev_priv(dev);
3570         struct mlx5_core_dev *mdev = priv->mdev;
3571
3572         return mlx5_eswitch_set_vport_mac(mdev->priv.eswitch, vf + 1, mac);
3573 }
3574
3575 static int mlx5e_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
3576                              __be16 vlan_proto)
3577 {
3578         struct mlx5e_priv *priv = netdev_priv(dev);
3579         struct mlx5_core_dev *mdev = priv->mdev;
3580
3581         if (vlan_proto != htons(ETH_P_8021Q))
3582                 return -EPROTONOSUPPORT;
3583
3584         return mlx5_eswitch_set_vport_vlan(mdev->priv.eswitch, vf + 1,
3585                                            vlan, qos);
3586 }
3587
3588 static int mlx5e_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
3589 {
3590         struct mlx5e_priv *priv = netdev_priv(dev);
3591         struct mlx5_core_dev *mdev = priv->mdev;
3592
3593         return mlx5_eswitch_set_vport_spoofchk(mdev->priv.eswitch, vf + 1, setting);
3594 }
3595
3596 static int mlx5e_set_vf_trust(struct net_device *dev, int vf, bool setting)
3597 {
3598         struct mlx5e_priv *priv = netdev_priv(dev);
3599         struct mlx5_core_dev *mdev = priv->mdev;
3600
3601         return mlx5_eswitch_set_vport_trust(mdev->priv.eswitch, vf + 1, setting);
3602 }
3603
3604 static int mlx5e_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
3605                              int max_tx_rate)
3606 {
3607         struct mlx5e_priv *priv = netdev_priv(dev);
3608         struct mlx5_core_dev *mdev = priv->mdev;
3609
3610         return mlx5_eswitch_set_vport_rate(mdev->priv.eswitch, vf + 1,
3611                                            max_tx_rate, min_tx_rate);
3612 }
3613
3614 static int mlx5_vport_link2ifla(u8 esw_link)
3615 {
3616         switch (esw_link) {
3617         case MLX5_ESW_VPORT_ADMIN_STATE_DOWN:
3618                 return IFLA_VF_LINK_STATE_DISABLE;
3619         case MLX5_ESW_VPORT_ADMIN_STATE_UP:
3620                 return IFLA_VF_LINK_STATE_ENABLE;
3621         }
3622         return IFLA_VF_LINK_STATE_AUTO;
3623 }
3624
3625 static int mlx5_ifla_link2vport(u8 ifla_link)
3626 {
3627         switch (ifla_link) {
3628         case IFLA_VF_LINK_STATE_DISABLE:
3629                 return MLX5_ESW_VPORT_ADMIN_STATE_DOWN;
3630         case IFLA_VF_LINK_STATE_ENABLE:
3631                 return MLX5_ESW_VPORT_ADMIN_STATE_UP;
3632         }
3633         return MLX5_ESW_VPORT_ADMIN_STATE_AUTO;
3634 }
3635
3636 static int mlx5e_set_vf_link_state(struct net_device *dev, int vf,
3637                                    int link_state)
3638 {
3639         struct mlx5e_priv *priv = netdev_priv(dev);
3640         struct mlx5_core_dev *mdev = priv->mdev;
3641
3642         return mlx5_eswitch_set_vport_state(mdev->priv.eswitch, vf + 1,
3643                                             mlx5_ifla_link2vport(link_state));
3644 }
3645
3646 static int mlx5e_get_vf_config(struct net_device *dev,
3647                                int vf, struct ifla_vf_info *ivi)
3648 {
3649         struct mlx5e_priv *priv = netdev_priv(dev);
3650         struct mlx5_core_dev *mdev = priv->mdev;
3651         int err;
3652
3653         err = mlx5_eswitch_get_vport_config(mdev->priv.eswitch, vf + 1, ivi);
3654         if (err)
3655                 return err;
3656         ivi->linkstate = mlx5_vport_link2ifla(ivi->linkstate);
3657         return 0;
3658 }
3659
3660 static int mlx5e_get_vf_stats(struct net_device *dev,
3661                               int vf, struct ifla_vf_stats *vf_stats)
3662 {
3663         struct mlx5e_priv *priv = netdev_priv(dev);
3664         struct mlx5_core_dev *mdev = priv->mdev;
3665
3666         return mlx5_eswitch_get_vport_stats(mdev->priv.eswitch, vf + 1,
3667                                             vf_stats);
3668 }
3669 #endif
3670
3671 static void mlx5e_add_vxlan_port(struct net_device *netdev,
3672                                  struct udp_tunnel_info *ti)
3673 {
3674         struct mlx5e_priv *priv = netdev_priv(netdev);
3675
3676         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
3677                 return;
3678
3679         if (!mlx5e_vxlan_allowed(priv->mdev))
3680                 return;
3681
3682         mlx5e_vxlan_queue_work(priv, ti->sa_family, be16_to_cpu(ti->port), 1);
3683 }
3684
3685 static void mlx5e_del_vxlan_port(struct net_device *netdev,
3686                                  struct udp_tunnel_info *ti)
3687 {
3688         struct mlx5e_priv *priv = netdev_priv(netdev);
3689
3690         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
3691                 return;
3692
3693         if (!mlx5e_vxlan_allowed(priv->mdev))
3694                 return;
3695
3696         mlx5e_vxlan_queue_work(priv, ti->sa_family, be16_to_cpu(ti->port), 0);
3697 }
3698
3699 static netdev_features_t mlx5e_tunnel_features_check(struct mlx5e_priv *priv,
3700                                                      struct sk_buff *skb,
3701                                                      netdev_features_t features)
3702 {
3703         unsigned int offset = 0;
3704         struct udphdr *udph;
3705         u8 proto;
3706         u16 port;
3707
3708         switch (vlan_get_protocol(skb)) {
3709         case htons(ETH_P_IP):
3710                 proto = ip_hdr(skb)->protocol;
3711                 break;
3712         case htons(ETH_P_IPV6):
3713                 proto = ipv6_find_hdr(skb, &offset, -1, NULL, NULL);
3714                 break;
3715         default:
3716                 goto out;
3717         }
3718
3719         switch (proto) {
3720         case IPPROTO_GRE:
3721                 return features;
3722         case IPPROTO_UDP:
3723                 udph = udp_hdr(skb);
3724                 port = be16_to_cpu(udph->dest);
3725
3726                 /* Verify if UDP port is being offloaded by HW */
3727                 if (mlx5e_vxlan_lookup_port(priv, port))
3728                         return features;
3729         }
3730
3731 out:
3732         /* Disable CSUM and GSO if the udp dport is not offloaded by HW */
3733         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
3734 }
3735
3736 static netdev_features_t mlx5e_features_check(struct sk_buff *skb,
3737                                               struct net_device *netdev,
3738                                               netdev_features_t features)
3739 {
3740         struct mlx5e_priv *priv = netdev_priv(netdev);
3741
3742         features = vlan_features_check(skb, features);
3743         features = vxlan_features_check(skb, features);
3744
3745 #ifdef CONFIG_MLX5_EN_IPSEC
3746         if (mlx5e_ipsec_feature_check(skb, netdev, features))
3747                 return features;
3748 #endif
3749
3750         /* Validate if the tunneled packet is being offloaded by HW */
3751         if (skb->encapsulation &&
3752             (features & NETIF_F_CSUM_MASK || features & NETIF_F_GSO_MASK))
3753                 return mlx5e_tunnel_features_check(priv, skb, features);
3754
3755         return features;
3756 }
3757
3758 static bool mlx5e_tx_timeout_eq_recover(struct net_device *dev,
3759                                         struct mlx5e_txqsq *sq)
3760 {
3761         struct mlx5_eq *eq = sq->cq.mcq.eq;
3762         u32 eqe_count;
3763
3764         netdev_err(dev, "EQ 0x%x: Cons = 0x%x, irqn = 0x%x\n",
3765                    eq->eqn, eq->cons_index, eq->irqn);
3766
3767         eqe_count = mlx5_eq_poll_irq_disabled(eq);
3768         if (!eqe_count)
3769                 return false;
3770
3771         netdev_err(dev, "Recover %d eqes on EQ 0x%x\n", eqe_count, eq->eqn);
3772         sq->channel->stats.eq_rearm++;
3773         return true;
3774 }
3775
3776 static void mlx5e_tx_timeout_work(struct work_struct *work)
3777 {
3778         struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
3779                                                tx_timeout_work);
3780         struct net_device *dev = priv->netdev;
3781         bool reopen_channels = false;
3782         int i, err;
3783
3784         rtnl_lock();
3785         mutex_lock(&priv->state_lock);
3786
3787         if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
3788                 goto unlock;
3789
3790         for (i = 0; i < priv->channels.num * priv->channels.params.num_tc; i++) {
3791                 struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, i);
3792                 struct mlx5e_txqsq *sq = priv->txq2sq[i];
3793
3794                 if (!netif_xmit_stopped(dev_queue))
3795                         continue;
3796
3797                 netdev_err(dev,
3798                            "TX timeout on queue: %d, SQ: 0x%x, CQ: 0x%x, SQ Cons: 0x%x SQ Prod: 0x%x, usecs since last trans: %u\n",
3799                            i, sq->sqn, sq->cq.mcq.cqn, sq->cc, sq->pc,
3800                            jiffies_to_usecs(jiffies - dev_queue->trans_start));
3801
3802                 /* If we recover a lost interrupt, most likely TX timeout will
3803                  * be resolved, skip reopening channels
3804                  */
3805                 if (!mlx5e_tx_timeout_eq_recover(dev, sq)) {
3806                         clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
3807                         reopen_channels = true;
3808                 }
3809         }
3810
3811         if (!reopen_channels)
3812                 goto unlock;
3813
3814         mlx5e_close_locked(dev);
3815         err = mlx5e_open_locked(dev);
3816         if (err)
3817                 netdev_err(priv->netdev,
3818                            "mlx5e_open_locked failed recovering from a tx_timeout, err(%d).\n",
3819                            err);
3820
3821 unlock:
3822         mutex_unlock(&priv->state_lock);
3823         rtnl_unlock();
3824 }
3825
3826 static void mlx5e_tx_timeout(struct net_device *dev)
3827 {
3828         struct mlx5e_priv *priv = netdev_priv(dev);
3829
3830         netdev_err(dev, "TX timeout detected\n");
3831         queue_work(priv->wq, &priv->tx_timeout_work);
3832 }
3833
3834 static int mlx5e_xdp_set(struct net_device *netdev, struct bpf_prog *prog)
3835 {
3836         struct mlx5e_priv *priv = netdev_priv(netdev);
3837         struct bpf_prog *old_prog;
3838         int err = 0;
3839         bool reset, was_opened;
3840         int i;
3841
3842         mutex_lock(&priv->state_lock);
3843
3844         if ((netdev->features & NETIF_F_LRO) && prog) {
3845                 netdev_warn(netdev, "can't set XDP while LRO is on, disable LRO first\n");
3846                 err = -EINVAL;
3847                 goto unlock;
3848         }
3849
3850         if ((netdev->features & NETIF_F_HW_ESP) && prog) {
3851                 netdev_warn(netdev, "can't set XDP with IPSec offload\n");
3852                 err = -EINVAL;
3853                 goto unlock;
3854         }
3855
3856         was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
3857         /* no need for full reset when exchanging programs */
3858         reset = (!priv->channels.params.xdp_prog || !prog);
3859
3860         if (was_opened && reset)
3861                 mlx5e_close_locked(netdev);
3862         if (was_opened && !reset) {
3863                 /* num_channels is invariant here, so we can take the
3864                  * batched reference right upfront.
3865                  */
3866                 prog = bpf_prog_add(prog, priv->channels.num);
3867                 if (IS_ERR(prog)) {
3868                         err = PTR_ERR(prog);
3869                         goto unlock;
3870                 }
3871         }
3872
3873         /* exchange programs, extra prog reference we got from caller
3874          * as long as we don't fail from this point onwards.
3875          */
3876         old_prog = xchg(&priv->channels.params.xdp_prog, prog);
3877         if (old_prog)
3878                 bpf_prog_put(old_prog);
3879
3880         if (reset) /* change RQ type according to priv->xdp_prog */
3881                 mlx5e_set_rq_type(priv->mdev, &priv->channels.params);
3882
3883         if (was_opened && reset)
3884                 mlx5e_open_locked(netdev);
3885
3886         if (!test_bit(MLX5E_STATE_OPENED, &priv->state) || reset)
3887                 goto unlock;
3888
3889         /* exchanging programs w/o reset, we update ref counts on behalf
3890          * of the channels RQs here.
3891          */
3892         for (i = 0; i < priv->channels.num; i++) {
3893                 struct mlx5e_channel *c = priv->channels.c[i];
3894
3895                 clear_bit(MLX5E_RQ_STATE_ENABLED, &c->rq.state);
3896                 napi_synchronize(&c->napi);
3897                 /* prevent mlx5e_poll_rx_cq from accessing rq->xdp_prog */
3898
3899                 old_prog = xchg(&c->rq.xdp_prog, prog);
3900
3901                 set_bit(MLX5E_RQ_STATE_ENABLED, &c->rq.state);
3902                 /* napi_schedule in case we have missed anything */
3903                 napi_schedule(&c->napi);
3904
3905                 if (old_prog)
3906                         bpf_prog_put(old_prog);
3907         }
3908
3909 unlock:
3910         mutex_unlock(&priv->state_lock);
3911         return err;
3912 }
3913
3914 static u32 mlx5e_xdp_query(struct net_device *dev)
3915 {
3916         struct mlx5e_priv *priv = netdev_priv(dev);
3917         const struct bpf_prog *xdp_prog;
3918         u32 prog_id = 0;
3919
3920         mutex_lock(&priv->state_lock);
3921         xdp_prog = priv->channels.params.xdp_prog;
3922         if (xdp_prog)
3923                 prog_id = xdp_prog->aux->id;
3924         mutex_unlock(&priv->state_lock);
3925
3926         return prog_id;
3927 }
3928
3929 static int mlx5e_xdp(struct net_device *dev, struct netdev_bpf *xdp)
3930 {
3931         switch (xdp->command) {
3932         case XDP_SETUP_PROG:
3933                 return mlx5e_xdp_set(dev, xdp->prog);
3934         case XDP_QUERY_PROG:
3935                 xdp->prog_id = mlx5e_xdp_query(dev);
3936                 xdp->prog_attached = !!xdp->prog_id;
3937                 return 0;
3938         default:
3939                 return -EINVAL;
3940         }
3941 }
3942
3943 #ifdef CONFIG_NET_POLL_CONTROLLER
3944 /* Fake "interrupt" called by netpoll (eg netconsole) to send skbs without
3945  * reenabling interrupts.
3946  */
3947 static void mlx5e_netpoll(struct net_device *dev)
3948 {
3949         struct mlx5e_priv *priv = netdev_priv(dev);
3950         struct mlx5e_channels *chs = &priv->channels;
3951
3952         int i;
3953
3954         for (i = 0; i < chs->num; i++)
3955                 napi_schedule(&chs->c[i]->napi);
3956 }
3957 #endif
3958
3959 static const struct net_device_ops mlx5e_netdev_ops = {
3960         .ndo_open                = mlx5e_open,
3961         .ndo_stop                = mlx5e_close,
3962         .ndo_start_xmit          = mlx5e_xmit,
3963         .ndo_setup_tc            = mlx5e_setup_tc,
3964         .ndo_select_queue        = mlx5e_select_queue,
3965         .ndo_get_stats64         = mlx5e_get_stats,
3966         .ndo_set_rx_mode         = mlx5e_set_rx_mode,
3967         .ndo_set_mac_address     = mlx5e_set_mac,
3968         .ndo_vlan_rx_add_vid     = mlx5e_vlan_rx_add_vid,
3969         .ndo_vlan_rx_kill_vid    = mlx5e_vlan_rx_kill_vid,
3970         .ndo_set_features        = mlx5e_set_features,
3971         .ndo_fix_features        = mlx5e_fix_features,
3972         .ndo_change_mtu          = mlx5e_change_mtu,
3973         .ndo_do_ioctl            = mlx5e_ioctl,
3974         .ndo_set_tx_maxrate      = mlx5e_set_tx_maxrate,
3975         .ndo_udp_tunnel_add      = mlx5e_add_vxlan_port,
3976         .ndo_udp_tunnel_del      = mlx5e_del_vxlan_port,
3977         .ndo_features_check      = mlx5e_features_check,
3978 #ifdef CONFIG_RFS_ACCEL
3979         .ndo_rx_flow_steer       = mlx5e_rx_flow_steer,
3980 #endif
3981         .ndo_tx_timeout          = mlx5e_tx_timeout,
3982         .ndo_bpf                 = mlx5e_xdp,
3983 #ifdef CONFIG_NET_POLL_CONTROLLER
3984         .ndo_poll_controller     = mlx5e_netpoll,
3985 #endif
3986 #ifdef CONFIG_MLX5_ESWITCH
3987         /* SRIOV E-Switch NDOs */
3988         .ndo_set_vf_mac          = mlx5e_set_vf_mac,
3989         .ndo_set_vf_vlan         = mlx5e_set_vf_vlan,
3990         .ndo_set_vf_spoofchk     = mlx5e_set_vf_spoofchk,
3991         .ndo_set_vf_trust        = mlx5e_set_vf_trust,
3992         .ndo_set_vf_rate         = mlx5e_set_vf_rate,
3993         .ndo_get_vf_config       = mlx5e_get_vf_config,
3994         .ndo_set_vf_link_state   = mlx5e_set_vf_link_state,
3995         .ndo_get_vf_stats        = mlx5e_get_vf_stats,
3996         .ndo_has_offload_stats   = mlx5e_has_offload_stats,
3997         .ndo_get_offload_stats   = mlx5e_get_offload_stats,
3998 #endif
3999 };
4000
4001 static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
4002 {
4003         if (MLX5_CAP_GEN(mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
4004                 return -EOPNOTSUPP;
4005         if (!MLX5_CAP_GEN(mdev, eth_net_offloads) ||
4006             !MLX5_CAP_GEN(mdev, nic_flow_table) ||
4007             !MLX5_CAP_ETH(mdev, csum_cap) ||
4008             !MLX5_CAP_ETH(mdev, max_lso_cap) ||
4009             !MLX5_CAP_ETH(mdev, vlan_cap) ||
4010             !MLX5_CAP_ETH(mdev, rss_ind_tbl_cap) ||
4011             MLX5_CAP_FLOWTABLE(mdev,
4012                                flow_table_properties_nic_receive.max_ft_level)
4013                                < 3) {
4014                 mlx5_core_warn(mdev,
4015                                "Not creating net device, some required device capabilities are missing\n");
4016                 return -EOPNOTSUPP;
4017         }
4018         if (!MLX5_CAP_ETH(mdev, self_lb_en_modifiable))
4019                 mlx5_core_warn(mdev, "Self loop back prevention is not supported\n");
4020         if (!MLX5_CAP_GEN(mdev, cq_moderation))
4021                 mlx5_core_warn(mdev, "CQ moderation is not supported\n");
4022
4023         return 0;
4024 }
4025
4026 void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len,
4027                                    int num_channels)
4028 {
4029         int i;
4030
4031         for (i = 0; i < len; i++)
4032                 indirection_rqt[i] = i % num_channels;
4033 }
4034
4035 static bool slow_pci_heuristic(struct mlx5_core_dev *mdev)
4036 {
4037         u32 link_speed = 0;
4038         u32 pci_bw = 0;
4039
4040         mlx5e_get_max_linkspeed(mdev, &link_speed);
4041         pci_bw = pcie_bandwidth_available(mdev->pdev, NULL, NULL, NULL);
4042         mlx5_core_dbg_once(mdev, "Max link speed = %d, PCI BW = %d\n",
4043                            link_speed, pci_bw);
4044
4045 #define MLX5E_SLOW_PCI_RATIO (2)
4046
4047         return link_speed && pci_bw &&
4048                 link_speed > MLX5E_SLOW_PCI_RATIO * pci_bw;
4049 }
4050
4051 void mlx5e_set_tx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
4052 {
4053         params->tx_cq_moderation.cq_period_mode = cq_period_mode;
4054
4055         params->tx_cq_moderation.pkts =
4056                 MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS;
4057         params->tx_cq_moderation.usec =
4058                 MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC;
4059
4060         if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
4061                 params->tx_cq_moderation.usec =
4062                         MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC_FROM_CQE;
4063
4064         MLX5E_SET_PFLAG(params, MLX5E_PFLAG_TX_CQE_BASED_MODER,
4065                         params->tx_cq_moderation.cq_period_mode ==
4066                                 MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
4067 }
4068
4069 void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
4070 {
4071         params->rx_cq_moderation.cq_period_mode = cq_period_mode;
4072
4073         params->rx_cq_moderation.pkts =
4074                 MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS;
4075         params->rx_cq_moderation.usec =
4076                 MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC;
4077
4078         if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
4079                 params->rx_cq_moderation.usec =
4080                         MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE;
4081
4082         if (params->rx_dim_enabled) {
4083                 switch (cq_period_mode) {
4084                 case MLX5_CQ_PERIOD_MODE_START_FROM_CQE:
4085                         params->rx_cq_moderation =
4086                                 net_dim_get_def_profile(NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE);
4087                         break;
4088                 case MLX5_CQ_PERIOD_MODE_START_FROM_EQE:
4089                 default:
4090                         params->rx_cq_moderation =
4091                                 net_dim_get_def_profile(NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE);
4092                 }
4093         }
4094
4095         MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_BASED_MODER,
4096                         params->rx_cq_moderation.cq_period_mode ==
4097                                 MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
4098 }
4099
4100 static u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout)
4101 {
4102         int i;
4103
4104         /* The supported periods are organized in ascending order */
4105         for (i = 0; i < MLX5E_LRO_TIMEOUT_ARR_SIZE - 1; i++)
4106                 if (MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]) >= wanted_timeout)
4107                         break;
4108
4109         return MLX5_CAP_ETH(mdev, lro_timer_supported_periods[i]);
4110 }
4111
4112 void mlx5e_build_nic_params(struct mlx5_core_dev *mdev,
4113                             struct mlx5e_params *params,
4114                             u16 max_channels, u16 mtu)
4115 {
4116         u8 rx_cq_period_mode;
4117
4118         params->sw_mtu = mtu;
4119         params->hard_mtu = MLX5E_ETH_HARD_MTU;
4120         params->num_channels = max_channels;
4121         params->num_tc       = 1;
4122
4123         /* SQ */
4124         params->log_sq_size = is_kdump_kernel() ?
4125                 MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE :
4126                 MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
4127
4128         /* set CQE compression */
4129         params->rx_cqe_compress_def = false;
4130         if (MLX5_CAP_GEN(mdev, cqe_compression) &&
4131             MLX5_CAP_GEN(mdev, vport_group_manager))
4132                 params->rx_cqe_compress_def = slow_pci_heuristic(mdev);
4133
4134         MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS, params->rx_cqe_compress_def);
4135
4136         /* RQ */
4137         if (mlx5e_striding_rq_possible(mdev, params))
4138                 MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ,
4139                                 !slow_pci_heuristic(mdev));
4140         mlx5e_set_rq_type(mdev, params);
4141         mlx5e_init_rq_type_params(mdev, params);
4142
4143         /* HW LRO */
4144
4145         /* TODO: && MLX5_CAP_ETH(mdev, lro_cap) */
4146         if (params->rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
4147                 if (!mlx5e_rx_mpwqe_is_linear_skb(mdev, params))
4148                         params->lro_en = !slow_pci_heuristic(mdev);
4149         params->lro_timeout = mlx5e_choose_lro_timeout(mdev, MLX5E_DEFAULT_LRO_TIMEOUT);
4150
4151         /* CQ moderation params */
4152         rx_cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ?
4153                         MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
4154                         MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
4155         params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
4156         mlx5e_set_rx_cq_mode_params(params, rx_cq_period_mode);
4157         mlx5e_set_tx_cq_mode_params(params, MLX5_CQ_PERIOD_MODE_START_FROM_EQE);
4158
4159         /* TX inline */
4160         params->tx_min_inline_mode = mlx5e_params_calculate_tx_min_inline(mdev);
4161
4162         /* RSS */
4163         params->rss_hfunc = ETH_RSS_HASH_XOR;
4164         netdev_rss_key_fill(params->toeplitz_hash_key, sizeof(params->toeplitz_hash_key));
4165         mlx5e_build_default_indir_rqt(params->indirection_rqt,
4166                                       MLX5E_INDIR_RQT_SIZE, max_channels);
4167 }
4168
4169 static void mlx5e_build_nic_netdev_priv(struct mlx5_core_dev *mdev,
4170                                         struct net_device *netdev,
4171                                         const struct mlx5e_profile *profile,
4172                                         void *ppriv)
4173 {
4174         struct mlx5e_priv *priv = netdev_priv(netdev);
4175
4176         priv->mdev        = mdev;
4177         priv->netdev      = netdev;
4178         priv->profile     = profile;
4179         priv->ppriv       = ppriv;
4180         priv->msglevel    = MLX5E_MSG_LEVEL;
4181
4182         mlx5e_build_nic_params(mdev, &priv->channels.params,
4183                                profile->max_nch(mdev), netdev->mtu);
4184
4185         mutex_init(&priv->state_lock);
4186
4187         INIT_WORK(&priv->update_carrier_work, mlx5e_update_carrier_work);
4188         INIT_WORK(&priv->set_rx_mode_work, mlx5e_set_rx_mode_work);
4189         INIT_WORK(&priv->tx_timeout_work, mlx5e_tx_timeout_work);
4190         INIT_DELAYED_WORK(&priv->update_stats_work, mlx5e_update_stats_work);
4191
4192         mlx5e_timestamp_init(priv);
4193 }
4194
4195 static void mlx5e_set_netdev_dev_addr(struct net_device *netdev)
4196 {
4197         struct mlx5e_priv *priv = netdev_priv(netdev);
4198
4199         mlx5_query_nic_vport_mac_address(priv->mdev, 0, netdev->dev_addr);
4200         if (is_zero_ether_addr(netdev->dev_addr) &&
4201             !MLX5_CAP_GEN(priv->mdev, vport_group_manager)) {
4202                 eth_hw_addr_random(netdev);
4203                 mlx5_core_info(priv->mdev, "Assigned random MAC address %pM\n", netdev->dev_addr);
4204         }
4205 }
4206
4207 #if IS_ENABLED(CONFIG_MLX5_ESWITCH)
4208 static const struct switchdev_ops mlx5e_switchdev_ops = {
4209         .switchdev_port_attr_get        = mlx5e_attr_get,
4210 };
4211 #endif
4212
4213 static void mlx5e_build_nic_netdev(struct net_device *netdev)
4214 {
4215         struct mlx5e_priv *priv = netdev_priv(netdev);
4216         struct mlx5_core_dev *mdev = priv->mdev;
4217         bool fcs_supported;
4218         bool fcs_enabled;
4219
4220         SET_NETDEV_DEV(netdev, &mdev->pdev->dev);
4221
4222         netdev->netdev_ops = &mlx5e_netdev_ops;
4223
4224 #ifdef CONFIG_MLX5_CORE_EN_DCB
4225         if (MLX5_CAP_GEN(mdev, vport_group_manager) && MLX5_CAP_GEN(mdev, qos))
4226                 netdev->dcbnl_ops = &mlx5e_dcbnl_ops;
4227 #endif
4228
4229         netdev->watchdog_timeo    = 15 * HZ;
4230
4231         netdev->ethtool_ops       = &mlx5e_ethtool_ops;
4232
4233         netdev->vlan_features    |= NETIF_F_SG;
4234         netdev->vlan_features    |= NETIF_F_IP_CSUM;
4235         netdev->vlan_features    |= NETIF_F_IPV6_CSUM;
4236         netdev->vlan_features    |= NETIF_F_GRO;
4237         netdev->vlan_features    |= NETIF_F_TSO;
4238         netdev->vlan_features    |= NETIF_F_TSO6;
4239         netdev->vlan_features    |= NETIF_F_RXCSUM;
4240         netdev->vlan_features    |= NETIF_F_RXHASH;
4241
4242         netdev->hw_enc_features  |= NETIF_F_HW_VLAN_CTAG_TX;
4243         netdev->hw_enc_features  |= NETIF_F_HW_VLAN_CTAG_RX;
4244
4245         if (!!MLX5_CAP_ETH(mdev, lro_cap))
4246                 netdev->vlan_features    |= NETIF_F_LRO;
4247
4248         netdev->hw_features       = netdev->vlan_features;
4249         netdev->hw_features      |= NETIF_F_HW_VLAN_CTAG_TX;
4250         netdev->hw_features      |= NETIF_F_HW_VLAN_CTAG_RX;
4251         netdev->hw_features      |= NETIF_F_HW_VLAN_CTAG_FILTER;
4252         netdev->hw_features      |= NETIF_F_HW_VLAN_STAG_TX;
4253
4254         if (mlx5e_vxlan_allowed(mdev) || MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) {
4255                 netdev->hw_features     |= NETIF_F_GSO_PARTIAL;
4256                 netdev->hw_enc_features |= NETIF_F_IP_CSUM;
4257                 netdev->hw_enc_features |= NETIF_F_IPV6_CSUM;
4258                 netdev->hw_enc_features |= NETIF_F_TSO;
4259                 netdev->hw_enc_features |= NETIF_F_TSO6;
4260                 netdev->hw_enc_features |= NETIF_F_GSO_PARTIAL;
4261         }
4262
4263         if (mlx5e_vxlan_allowed(mdev)) {
4264                 netdev->hw_features     |= NETIF_F_GSO_UDP_TUNNEL |
4265                                            NETIF_F_GSO_UDP_TUNNEL_CSUM;
4266                 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL |
4267                                            NETIF_F_GSO_UDP_TUNNEL_CSUM;
4268                 netdev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
4269         }
4270
4271         if (MLX5_CAP_ETH(mdev, tunnel_stateless_gre)) {
4272                 netdev->hw_features     |= NETIF_F_GSO_GRE |
4273                                            NETIF_F_GSO_GRE_CSUM;
4274                 netdev->hw_enc_features |= NETIF_F_GSO_GRE |
4275                                            NETIF_F_GSO_GRE_CSUM;
4276                 netdev->gso_partial_features |= NETIF_F_GSO_GRE |
4277                                                 NETIF_F_GSO_GRE_CSUM;
4278         }
4279
4280         mlx5_query_port_fcs(mdev, &fcs_supported, &fcs_enabled);
4281
4282         if (fcs_supported)
4283                 netdev->hw_features |= NETIF_F_RXALL;
4284
4285         if (MLX5_CAP_ETH(mdev, scatter_fcs))
4286                 netdev->hw_features |= NETIF_F_RXFCS;
4287
4288         netdev->features          = netdev->hw_features;
4289         if (!priv->channels.params.lro_en)
4290                 netdev->features  &= ~NETIF_F_LRO;
4291
4292         if (fcs_enabled)
4293                 netdev->features  &= ~NETIF_F_RXALL;
4294
4295         if (!priv->channels.params.scatter_fcs_en)
4296                 netdev->features  &= ~NETIF_F_RXFCS;
4297
4298 #define FT_CAP(f) MLX5_CAP_FLOWTABLE(mdev, flow_table_properties_nic_receive.f)
4299         if (FT_CAP(flow_modify_en) &&
4300             FT_CAP(modify_root) &&
4301             FT_CAP(identified_miss_table_mode) &&
4302             FT_CAP(flow_table_modify)) {
4303                 netdev->hw_features      |= NETIF_F_HW_TC;
4304 #ifdef CONFIG_RFS_ACCEL
4305                 netdev->hw_features      |= NETIF_F_NTUPLE;
4306 #endif
4307         }
4308
4309         netdev->features         |= NETIF_F_HIGHDMA;
4310         netdev->features         |= NETIF_F_HW_VLAN_STAG_FILTER;
4311
4312         netdev->priv_flags       |= IFF_UNICAST_FLT;
4313
4314         mlx5e_set_netdev_dev_addr(netdev);
4315
4316 #if IS_ENABLED(CONFIG_MLX5_ESWITCH)
4317         if (MLX5_VPORT_MANAGER(mdev))
4318                 netdev->switchdev_ops = &mlx5e_switchdev_ops;
4319 #endif
4320
4321         mlx5e_ipsec_build_netdev(priv);
4322 }
4323
4324 static void mlx5e_create_q_counters(struct mlx5e_priv *priv)
4325 {
4326         struct mlx5_core_dev *mdev = priv->mdev;
4327         int err;
4328
4329         err = mlx5_core_alloc_q_counter(mdev, &priv->q_counter);
4330         if (err) {
4331                 mlx5_core_warn(mdev, "alloc queue counter failed, %d\n", err);
4332                 priv->q_counter = 0;
4333         }
4334
4335         err = mlx5_core_alloc_q_counter(mdev, &priv->drop_rq_q_counter);
4336         if (err) {
4337                 mlx5_core_warn(mdev, "alloc drop RQ counter failed, %d\n", err);
4338                 priv->drop_rq_q_counter = 0;
4339         }
4340 }
4341
4342 static void mlx5e_destroy_q_counters(struct mlx5e_priv *priv)
4343 {
4344         if (priv->q_counter)
4345                 mlx5_core_dealloc_q_counter(priv->mdev, priv->q_counter);
4346
4347         if (priv->drop_rq_q_counter)
4348                 mlx5_core_dealloc_q_counter(priv->mdev, priv->drop_rq_q_counter);
4349 }
4350
4351 static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
4352                            struct net_device *netdev,
4353                            const struct mlx5e_profile *profile,
4354                            void *ppriv)
4355 {
4356         struct mlx5e_priv *priv = netdev_priv(netdev);
4357         int err;
4358
4359         mlx5e_build_nic_netdev_priv(mdev, netdev, profile, ppriv);
4360         err = mlx5e_ipsec_init(priv);
4361         if (err)
4362                 mlx5_core_err(mdev, "IPSec initialization failed, %d\n", err);
4363         mlx5e_build_nic_netdev(netdev);
4364         mlx5e_vxlan_init(priv);
4365 }
4366
4367 static void mlx5e_nic_cleanup(struct mlx5e_priv *priv)
4368 {
4369         mlx5e_ipsec_cleanup(priv);
4370         mlx5e_vxlan_cleanup(priv);
4371 }
4372
4373 static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
4374 {
4375         struct mlx5_core_dev *mdev = priv->mdev;
4376         int err;
4377
4378         err = mlx5e_create_indirect_rqt(priv);
4379         if (err)
4380                 return err;
4381
4382         err = mlx5e_create_direct_rqts(priv);
4383         if (err)
4384                 goto err_destroy_indirect_rqts;
4385
4386         err = mlx5e_create_indirect_tirs(priv);
4387         if (err)
4388                 goto err_destroy_direct_rqts;
4389
4390         err = mlx5e_create_direct_tirs(priv);
4391         if (err)
4392                 goto err_destroy_indirect_tirs;
4393
4394         err = mlx5e_create_flow_steering(priv);
4395         if (err) {
4396                 mlx5_core_warn(mdev, "create flow steering failed, %d\n", err);
4397                 goto err_destroy_direct_tirs;
4398         }
4399
4400         err = mlx5e_tc_init(priv);
4401         if (err)
4402                 goto err_destroy_flow_steering;
4403
4404         return 0;
4405
4406 err_destroy_flow_steering:
4407         mlx5e_destroy_flow_steering(priv);
4408 err_destroy_direct_tirs:
4409         mlx5e_destroy_direct_tirs(priv);
4410 err_destroy_indirect_tirs:
4411         mlx5e_destroy_indirect_tirs(priv);
4412 err_destroy_direct_rqts:
4413         mlx5e_destroy_direct_rqts(priv);
4414 err_destroy_indirect_rqts:
4415         mlx5e_destroy_rqt(priv, &priv->indir_rqt);
4416         return err;
4417 }
4418
4419 static void mlx5e_cleanup_nic_rx(struct mlx5e_priv *priv)
4420 {
4421         mlx5e_tc_cleanup(priv);
4422         mlx5e_destroy_flow_steering(priv);
4423         mlx5e_destroy_direct_tirs(priv);
4424         mlx5e_destroy_indirect_tirs(priv);
4425         mlx5e_destroy_direct_rqts(priv);
4426         mlx5e_destroy_rqt(priv, &priv->indir_rqt);
4427 }
4428
4429 static int mlx5e_init_nic_tx(struct mlx5e_priv *priv)
4430 {
4431         int err;
4432
4433         err = mlx5e_create_tises(priv);
4434         if (err) {
4435                 mlx5_core_warn(priv->mdev, "create tises failed, %d\n", err);
4436                 return err;
4437         }
4438
4439 #ifdef CONFIG_MLX5_CORE_EN_DCB
4440         mlx5e_dcbnl_initialize(priv);
4441 #endif
4442         return 0;
4443 }
4444
4445 static void mlx5e_nic_enable(struct mlx5e_priv *priv)
4446 {
4447         struct net_device *netdev = priv->netdev;
4448         struct mlx5_core_dev *mdev = priv->mdev;
4449         u16 max_mtu;
4450
4451         mlx5e_init_l2_addr(priv);
4452
4453         /* Marking the link as currently not needed by the Driver */
4454         if (!netif_running(netdev))
4455                 mlx5_set_port_admin_status(mdev, MLX5_PORT_DOWN);
4456
4457         /* MTU range: 68 - hw-specific max */
4458         netdev->min_mtu = ETH_MIN_MTU;
4459         mlx5_query_port_max_mtu(priv->mdev, &max_mtu, 1);
4460         netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu);
4461         mlx5e_set_dev_port_mtu(priv);
4462
4463         mlx5_lag_add(mdev, netdev);
4464
4465         mlx5e_enable_async_events(priv);
4466
4467         if (MLX5_VPORT_MANAGER(priv->mdev))
4468                 mlx5e_register_vport_reps(priv);
4469
4470         if (netdev->reg_state != NETREG_REGISTERED)
4471                 return;
4472 #ifdef CONFIG_MLX5_CORE_EN_DCB
4473         mlx5e_dcbnl_init_app(priv);
4474 #endif
4475
4476         queue_work(priv->wq, &priv->set_rx_mode_work);
4477
4478         rtnl_lock();
4479         if (netif_running(netdev))
4480                 mlx5e_open(netdev);
4481         netif_device_attach(netdev);
4482         rtnl_unlock();
4483 }
4484
4485 static void mlx5e_nic_disable(struct mlx5e_priv *priv)
4486 {
4487         struct mlx5_core_dev *mdev = priv->mdev;
4488
4489 #ifdef CONFIG_MLX5_CORE_EN_DCB
4490         if (priv->netdev->reg_state == NETREG_REGISTERED)
4491                 mlx5e_dcbnl_delete_app(priv);
4492 #endif
4493
4494         rtnl_lock();
4495         if (netif_running(priv->netdev))
4496                 mlx5e_close(priv->netdev);
4497         netif_device_detach(priv->netdev);
4498         rtnl_unlock();
4499
4500         queue_work(priv->wq, &priv->set_rx_mode_work);
4501
4502         if (MLX5_VPORT_MANAGER(priv->mdev))
4503                 mlx5e_unregister_vport_reps(priv);
4504
4505         mlx5e_disable_async_events(priv);
4506         mlx5_lag_remove(mdev);
4507 }
4508
4509 static const struct mlx5e_profile mlx5e_nic_profile = {
4510         .init              = mlx5e_nic_init,
4511         .cleanup           = mlx5e_nic_cleanup,
4512         .init_rx           = mlx5e_init_nic_rx,
4513         .cleanup_rx        = mlx5e_cleanup_nic_rx,
4514         .init_tx           = mlx5e_init_nic_tx,
4515         .cleanup_tx        = mlx5e_cleanup_nic_tx,
4516         .enable            = mlx5e_nic_enable,
4517         .disable           = mlx5e_nic_disable,
4518         .update_stats      = mlx5e_update_ndo_stats,
4519         .max_nch           = mlx5e_get_max_num_channels,
4520         .update_carrier    = mlx5e_update_carrier,
4521         .rx_handlers.handle_rx_cqe       = mlx5e_handle_rx_cqe,
4522         .rx_handlers.handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq,
4523         .max_tc            = MLX5E_MAX_NUM_TC,
4524 };
4525
4526 /* mlx5e generic netdev management API (move to en_common.c) */
4527
4528 struct net_device *mlx5e_create_netdev(struct mlx5_core_dev *mdev,
4529                                        const struct mlx5e_profile *profile,
4530                                        void *ppriv)
4531 {
4532         int nch = profile->max_nch(mdev);
4533         struct net_device *netdev;
4534         struct mlx5e_priv *priv;
4535
4536         netdev = alloc_etherdev_mqs(sizeof(struct mlx5e_priv),
4537                                     nch * profile->max_tc,
4538                                     nch);
4539         if (!netdev) {
4540                 mlx5_core_err(mdev, "alloc_etherdev_mqs() failed\n");
4541                 return NULL;
4542         }
4543
4544 #ifdef CONFIG_RFS_ACCEL
4545         netdev->rx_cpu_rmap = mdev->rmap;
4546 #endif
4547
4548         profile->init(mdev, netdev, profile, ppriv);
4549
4550         netif_carrier_off(netdev);
4551
4552         priv = netdev_priv(netdev);
4553
4554         priv->wq = create_singlethread_workqueue("mlx5e");
4555         if (!priv->wq)
4556                 goto err_cleanup_nic;
4557
4558         return netdev;
4559
4560 err_cleanup_nic:
4561         if (profile->cleanup)
4562                 profile->cleanup(priv);
4563         free_netdev(netdev);
4564
4565         return NULL;
4566 }
4567
4568 int mlx5e_attach_netdev(struct mlx5e_priv *priv)
4569 {
4570         struct mlx5_core_dev *mdev = priv->mdev;
4571         const struct mlx5e_profile *profile;
4572         int err;
4573
4574         profile = priv->profile;
4575         clear_bit(MLX5E_STATE_DESTROYING, &priv->state);
4576
4577         err = profile->init_tx(priv);
4578         if (err)
4579                 goto out;
4580
4581         mlx5e_create_q_counters(priv);
4582
4583         err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
4584         if (err) {
4585                 mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
4586                 goto err_destroy_q_counters;
4587         }
4588
4589         err = profile->init_rx(priv);
4590         if (err)
4591                 goto err_close_drop_rq;
4592
4593         if (profile->enable)
4594                 profile->enable(priv);
4595
4596         return 0;
4597
4598 err_close_drop_rq:
4599         mlx5e_close_drop_rq(&priv->drop_rq);
4600
4601 err_destroy_q_counters:
4602         mlx5e_destroy_q_counters(priv);
4603         profile->cleanup_tx(priv);
4604
4605 out:
4606         return err;
4607 }
4608
4609 void mlx5e_detach_netdev(struct mlx5e_priv *priv)
4610 {
4611         const struct mlx5e_profile *profile = priv->profile;
4612
4613         set_bit(MLX5E_STATE_DESTROYING, &priv->state);
4614
4615         if (profile->disable)
4616                 profile->disable(priv);
4617         flush_workqueue(priv->wq);
4618
4619         profile->cleanup_rx(priv);
4620         mlx5e_close_drop_rq(&priv->drop_rq);
4621         mlx5e_destroy_q_counters(priv);
4622         profile->cleanup_tx(priv);
4623         cancel_delayed_work_sync(&priv->update_stats_work);
4624 }
4625
4626 void mlx5e_destroy_netdev(struct mlx5e_priv *priv)
4627 {
4628         const struct mlx5e_profile *profile = priv->profile;
4629         struct net_device *netdev = priv->netdev;
4630
4631         destroy_workqueue(priv->wq);
4632         if (profile->cleanup)
4633                 profile->cleanup(priv);
4634         free_netdev(netdev);
4635 }
4636
4637 /* mlx5e_attach and mlx5e_detach scope should be only creating/destroying
4638  * hardware contexts and to connect it to the current netdev.
4639  */
4640 static int mlx5e_attach(struct mlx5_core_dev *mdev, void *vpriv)
4641 {
4642         struct mlx5e_priv *priv = vpriv;
4643         struct net_device *netdev = priv->netdev;
4644         int err;
4645
4646         if (netif_device_present(netdev))
4647                 return 0;
4648
4649         err = mlx5e_create_mdev_resources(mdev);
4650         if (err)
4651                 return err;
4652
4653         err = mlx5e_attach_netdev(priv);
4654         if (err) {
4655                 mlx5e_destroy_mdev_resources(mdev);
4656                 return err;
4657         }
4658
4659         return 0;
4660 }
4661
4662 static void mlx5e_detach(struct mlx5_core_dev *mdev, void *vpriv)
4663 {
4664         struct mlx5e_priv *priv = vpriv;
4665         struct net_device *netdev = priv->netdev;
4666
4667         if (!netif_device_present(netdev))
4668                 return;
4669
4670         mlx5e_detach_netdev(priv);
4671         mlx5e_destroy_mdev_resources(mdev);
4672 }
4673
4674 static void *mlx5e_add(struct mlx5_core_dev *mdev)
4675 {
4676         struct net_device *netdev;
4677         void *rpriv = NULL;
4678         void *priv;
4679         int err;
4680
4681         err = mlx5e_check_required_hca_cap(mdev);
4682         if (err)
4683                 return NULL;
4684
4685 #ifdef CONFIG_MLX5_ESWITCH
4686         if (MLX5_VPORT_MANAGER(mdev)) {
4687                 rpriv = mlx5e_alloc_nic_rep_priv(mdev);
4688                 if (!rpriv) {
4689                         mlx5_core_warn(mdev, "Failed to alloc NIC rep priv data\n");
4690                         return NULL;
4691                 }
4692         }
4693 #endif
4694
4695         netdev = mlx5e_create_netdev(mdev, &mlx5e_nic_profile, rpriv);
4696         if (!netdev) {
4697                 mlx5_core_err(mdev, "mlx5e_create_netdev failed\n");
4698                 goto err_free_rpriv;
4699         }
4700
4701         priv = netdev_priv(netdev);
4702
4703         err = mlx5e_attach(mdev, priv);
4704         if (err) {
4705                 mlx5_core_err(mdev, "mlx5e_attach failed, %d\n", err);
4706                 goto err_destroy_netdev;
4707         }
4708
4709         err = register_netdev(netdev);
4710         if (err) {
4711                 mlx5_core_err(mdev, "register_netdev failed, %d\n", err);
4712                 goto err_detach;
4713         }
4714
4715 #ifdef CONFIG_MLX5_CORE_EN_DCB
4716         mlx5e_dcbnl_init_app(priv);
4717 #endif
4718         return priv;
4719
4720 err_detach:
4721         mlx5e_detach(mdev, priv);
4722 err_destroy_netdev:
4723         mlx5e_destroy_netdev(priv);
4724 err_free_rpriv:
4725         kfree(rpriv);
4726         return NULL;
4727 }
4728
4729 static void mlx5e_remove(struct mlx5_core_dev *mdev, void *vpriv)
4730 {
4731         struct mlx5e_priv *priv = vpriv;
4732         void *ppriv = priv->ppriv;
4733
4734 #ifdef CONFIG_MLX5_CORE_EN_DCB
4735         mlx5e_dcbnl_delete_app(priv);
4736 #endif
4737         unregister_netdev(priv->netdev);
4738         mlx5e_detach(mdev, vpriv);
4739         mlx5e_destroy_netdev(priv);
4740         kfree(ppriv);
4741 }
4742
4743 static void *mlx5e_get_netdev(void *vpriv)
4744 {
4745         struct mlx5e_priv *priv = vpriv;
4746
4747         return priv->netdev;
4748 }
4749
4750 static struct mlx5_interface mlx5e_interface = {
4751         .add       = mlx5e_add,
4752         .remove    = mlx5e_remove,
4753         .attach    = mlx5e_attach,
4754         .detach    = mlx5e_detach,
4755         .event     = mlx5e_async_event,
4756         .protocol  = MLX5_INTERFACE_PROTOCOL_ETH,
4757         .get_dev   = mlx5e_get_netdev,
4758 };
4759
4760 void mlx5e_init(void)
4761 {
4762         mlx5e_ipsec_build_inverse_table();
4763         mlx5e_build_ptys2ethtool_map();
4764         mlx5_register_interface(&mlx5e_interface);
4765 }
4766
4767 void mlx5e_cleanup(void)
4768 {
4769         mlx5_unregister_interface(&mlx5e_interface);
4770 }