drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 // Copyright (c) 2016-2017 Hisilicon Limited.
   3
   4 #include <linux/dma-mapping.h>
   5 #include <linux/etherdevice.h>
   6 #include <linux/interrupt.h>
   7 #include <linux/if_vlan.h>
   8 #include <linux/ip.h>
   9 #include <linux/ipv6.h>
  10 #include <linux/module.h>
  11 #include <linux/pci.h>
  12 #include <linux/aer.h>
  13 #include <linux/skbuff.h>
  14 #include <linux/sctp.h>
  15 #include <linux/vermagic.h>
  16 #include <net/gre.h>
  17 #include <net/pkt_cls.h>
  18 #include <net/tcp.h>
  19 #include <net/vxlan.h>
  20
  21 #include "hnae3.h"
  22 #include "hns3_enet.h"
  23
  24 static void hns3_clear_all_ring(struct hnae3_handle *h);
  25 static void hns3_force_clear_all_rx_ring(struct hnae3_handle *h);
  26 static void hns3_remove_hw_addr(struct net_device *netdev);
  27
  28 static const char hns3_driver_name[] = "hns3";
  29 const char hns3_driver_version[] = VERMAGIC_STRING;
  30 static const char hns3_driver_string[] =
  31                         "Hisilicon Ethernet Network Driver for Hip08 Family";
  32 static const char hns3_copyright[] = "Copyright (c) 2017 Huawei Corporation.";
  33 static struct hnae3_client client;
  34
  35 /* hns3_pci_tbl - PCI Device ID Table
  36  *
  37  * Last entry must be all 0s
  38  *
  39  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  40  *   Class, Class Mask, private data (not used) }
  41  */
  42 static const struct pci_device_id hns3_pci_tbl[] = {
  43         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_GE), 0},
  44         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE), 0},
  45         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA),
  46          HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
  47         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC),
  48          HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
  49         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA),
  50          HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
  51         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC),
  52          HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
  53         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC),
  54          HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
  55         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_VF), 0},
  56         {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF),
  57          HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
  58         /* required last entry */
  59         {0, }
  60 };
  61 MODULE_DEVICE_TABLE(pci, hns3_pci_tbl);
  62
  63 static irqreturn_t hns3_irq_handle(int irq, void *vector)
  64 {
  65         struct hns3_enet_tqp_vector *tqp_vector = vector;
  66
  67         napi_schedule(&tqp_vector->napi);
  68
  69         return IRQ_HANDLED;
  70 }
  71
  72 /* This callback function is used to set affinity changes to the irq affinity
  73  * masks when the irq_set_affinity_notifier function is used.
  74  */
  75 static void hns3_nic_irq_affinity_notify(struct irq_affinity_notify *notify,
  76                                          const cpumask_t *mask)
  77 {
  78         struct hns3_enet_tqp_vector *tqp_vectors =
  79                 container_of(notify, struct hns3_enet_tqp_vector,
  80                              affinity_notify);
  81
  82         tqp_vectors->affinity_mask = *mask;
  83 }
  84
  85 static void hns3_nic_irq_affinity_release(struct kref *ref)
  86 {
  87 }
  88
  89 static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv)
  90 {
  91         struct hns3_enet_tqp_vector *tqp_vectors;
  92         unsigned int i;
  93
  94         for (i = 0; i < priv->vector_num; i++) {
  95                 tqp_vectors = &priv->tqp_vector[i];
  96
  97                 if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED)
  98                         continue;
  99
 100                 /* clear the affinity notifier and affinity mask */
 101                 irq_set_affinity_notifier(tqp_vectors->vector_irq, NULL);
 102                 irq_set_affinity_hint(tqp_vectors->vector_irq, NULL);
 103
 104                 /* release the irq resource */
 105                 free_irq(tqp_vectors->vector_irq, tqp_vectors);
 106                 tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED;
 107         }
 108 }
 109
 110 static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
 111 {
 112         struct hns3_enet_tqp_vector *tqp_vectors;
 113         int txrx_int_idx = 0;
 114         int rx_int_idx = 0;
 115         int tx_int_idx = 0;
 116         unsigned int i;
 117         int ret;
 118
 119         for (i = 0; i < priv->vector_num; i++) {
 120                 tqp_vectors = &priv->tqp_vector[i];
 121
 122                 if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED)
 123                         continue;
 124
 125                 if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) {
 126                         snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
 127                                  "%s-%s-%d", priv->netdev->name, "TxRx",
 128                                  txrx_int_idx++);
 129                         txrx_int_idx++;
 130                 } else if (tqp_vectors->rx_group.ring) {
 131                         snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
 132                                  "%s-%s-%d", priv->netdev->name, "Rx",
 133                                  rx_int_idx++);
 134                 } else if (tqp_vectors->tx_group.ring) {
 135                         snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
 136                                  "%s-%s-%d", priv->netdev->name, "Tx",
 137                                  tx_int_idx++);
 138                 } else {
 139                         /* Skip this unused q_vector */
 140                         continue;
 141                 }
 142
 143                 tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0';
 144
 145                 ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0,
 146                                   tqp_vectors->name,
 147                                        tqp_vectors);
 148                 if (ret) {
 149                         netdev_err(priv->netdev, "request irq(%d) fail\n",
 150                                    tqp_vectors->vector_irq);
 151                         return ret;
 152                 }
 153
 154                 tqp_vectors->affinity_notify.notify =
 155                                         hns3_nic_irq_affinity_notify;
 156                 tqp_vectors->affinity_notify.release =
 157                                         hns3_nic_irq_affinity_release;
 158                 irq_set_affinity_notifier(tqp_vectors->vector_irq,
 159                                           &tqp_vectors->affinity_notify);
 160                 irq_set_affinity_hint(tqp_vectors->vector_irq,
 161                                       &tqp_vectors->affinity_mask);
 162
 163                 tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED;
 164         }
 165
 166         return 0;
 167 }
 168
 169 static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector,
 170                                  u32 mask_en)
 171 {
 172         writel(mask_en, tqp_vector->mask_addr);
 173 }
 174
 175 static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector)
 176 {
 177         napi_enable(&tqp_vector->napi);
 178
 179         /* enable vector */
 180         hns3_mask_vector_irq(tqp_vector, 1);
 181 }
 182
 183 static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector)
 184 {
 185         /* disable vector */
 186         hns3_mask_vector_irq(tqp_vector, 0);
 187
 188         disable_irq(tqp_vector->vector_irq);
 189         napi_disable(&tqp_vector->napi);
 190 }
 191
 192 void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
 193                                  u32 rl_value)
 194 {
 195         u32 rl_reg = hns3_rl_usec_to_reg(rl_value);
 196
 197         /* this defines the configuration for RL (Interrupt Rate Limiter).
 198          * Rl defines rate of interrupts i.e. number of interrupts-per-second
 199          * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
 200          */
 201
 202         if (rl_reg > 0 && !tqp_vector->tx_group.coal.gl_adapt_enable &&
 203             !tqp_vector->rx_group.coal.gl_adapt_enable)
 204                 /* According to the hardware, the range of rl_reg is
 205                  * 0-59 and the unit is 4.
 206                  */
 207                 rl_reg |=  HNS3_INT_RL_ENABLE_MASK;
 208
 209         writel(rl_reg, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET);
 210 }
 211
 212 void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector,
 213                                     u32 gl_value)
 214 {
 215         u32 rx_gl_reg = hns3_gl_usec_to_reg(gl_value);
 216
 217         writel(rx_gl_reg, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET);
 218 }
 219
 220 void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector,
 221                                     u32 gl_value)
 222 {
 223         u32 tx_gl_reg = hns3_gl_usec_to_reg(gl_value);
 224
 225         writel(tx_gl_reg, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET);
 226 }
 227
 228 static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector,
 229                                    struct hns3_nic_priv *priv)
 230 {
 231         /* initialize the configuration for interrupt coalescing.
 232          * 1. GL (Interrupt Gap Limiter)
 233          * 2. RL (Interrupt Rate Limiter)
 234          */
 235
 236         /* Default: enable interrupt coalescing self-adaptive and GL */
 237         tqp_vector->tx_group.coal.gl_adapt_enable = 1;
 238         tqp_vector->rx_group.coal.gl_adapt_enable = 1;
 239
 240         tqp_vector->tx_group.coal.int_gl = HNS3_INT_GL_50K;
 241         tqp_vector->rx_group.coal.int_gl = HNS3_INT_GL_50K;
 242
 243         tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START;
 244         tqp_vector->rx_group.coal.flow_level = HNS3_FLOW_LOW;
 245         tqp_vector->tx_group.coal.flow_level = HNS3_FLOW_LOW;
 246 }
 247
 248 static void hns3_vector_gl_rl_init_hw(struct hns3_enet_tqp_vector *tqp_vector,
 249                                       struct hns3_nic_priv *priv)
 250 {
 251         struct hnae3_handle *h = priv->ae_handle;
 252
 253         hns3_set_vector_coalesce_tx_gl(tqp_vector,
 254                                        tqp_vector->tx_group.coal.int_gl);
 255         hns3_set_vector_coalesce_rx_gl(tqp_vector,
 256                                        tqp_vector->rx_group.coal.int_gl);
 257         hns3_set_vector_coalesce_rl(tqp_vector, h->kinfo.int_rl_setting);
 258 }
 259
 260 static int hns3_nic_set_real_num_queue(struct net_device *netdev)
 261 {
 262         struct hnae3_handle *h = hns3_get_handle(netdev);
 263         struct hnae3_knic_private_info *kinfo = &h->kinfo;
 264         unsigned int queue_size = kinfo->rss_size * kinfo->num_tc;
 265         int i, ret;
 266
 267         if (kinfo->num_tc <= 1) {
 268                 netdev_reset_tc(netdev);
 269         } else {
 270                 ret = netdev_set_num_tc(netdev, kinfo->num_tc);
 271                 if (ret) {
 272                         netdev_err(netdev,
 273                                    "netdev_set_num_tc fail, ret=%d!\n", ret);
 274                         return ret;
 275                 }
 276
 277                 for (i = 0; i < HNAE3_MAX_TC; i++) {
 278                         if (!kinfo->tc_info[i].enable)
 279                                 continue;
 280
 281                         netdev_set_tc_queue(netdev,
 282                                             kinfo->tc_info[i].tc,
 283                                             kinfo->tc_info[i].tqp_count,
 284                                             kinfo->tc_info[i].tqp_offset);
 285                 }
 286         }
 287
 288         ret = netif_set_real_num_tx_queues(netdev, queue_size);
 289         if (ret) {
 290                 netdev_err(netdev,
 291                            "netif_set_real_num_tx_queues fail, ret=%d!\n",
 292                            ret);
 293                 return ret;
 294         }
 295
 296         ret = netif_set_real_num_rx_queues(netdev, queue_size);
 297         if (ret) {
 298                 netdev_err(netdev,
 299                            "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
 300                 return ret;
 301         }
 302
 303         return 0;
 304 }
 305
 306 static u16 hns3_get_max_available_channels(struct hnae3_handle *h)
 307 {
 308         u16 alloc_tqps, max_rss_size, rss_size;
 309
 310         h->ae_algo->ops->get_tqps_and_rss_info(h, &alloc_tqps, &max_rss_size);
 311         rss_size = alloc_tqps / h->kinfo.num_tc;
 312
 313         return min_t(u16, rss_size, max_rss_size);
 314 }
 315
 316 static void hns3_tqp_enable(struct hnae3_queue *tqp)
 317 {
 318         u32 rcb_reg;
 319
 320         rcb_reg = hns3_read_dev(tqp, HNS3_RING_EN_REG);
 321         rcb_reg |= BIT(HNS3_RING_EN_B);
 322         hns3_write_dev(tqp, HNS3_RING_EN_REG, rcb_reg);
 323 }
 324
 325 static void hns3_tqp_disable(struct hnae3_queue *tqp)
 326 {
 327         u32 rcb_reg;
 328
 329         rcb_reg = hns3_read_dev(tqp, HNS3_RING_EN_REG);
 330         rcb_reg &= ~BIT(HNS3_RING_EN_B);
 331         hns3_write_dev(tqp, HNS3_RING_EN_REG, rcb_reg);
 332 }
 333
 334 static int hns3_nic_net_up(struct net_device *netdev)
 335 {
 336         struct hns3_nic_priv *priv = netdev_priv(netdev);
 337         struct hnae3_handle *h = priv->ae_handle;
 338         int i, j;
 339         int ret;
 340
 341         ret = hns3_nic_reset_all_ring(h);
 342         if (ret)
 343                 return ret;
 344
 345         /* get irq resource for all vectors */
 346         ret = hns3_nic_init_irq(priv);
 347         if (ret) {
 348                 netdev_err(netdev, "hns init irq failed! ret=%d\n", ret);
 349                 return ret;
 350         }
 351
 352         /* enable the vectors */
 353         for (i = 0; i < priv->vector_num; i++)
 354                 hns3_vector_enable(&priv->tqp_vector[i]);
 355
 356         /* enable rcb */
 357         for (j = 0; j < h->kinfo.num_tqps; j++)
 358                 hns3_tqp_enable(h->kinfo.tqp[j]);
 359
 360         /* start the ae_dev */
 361         ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0;
 362         if (ret)
 363                 goto out_start_err;
 364
 365         clear_bit(HNS3_NIC_STATE_DOWN, &priv->state);
 366
 367         return 0;
 368
 369 out_start_err:
 370         while (j--)
 371                 hns3_tqp_disable(h->kinfo.tqp[j]);
 372
 373         for (j = i - 1; j >= 0; j--)
 374                 hns3_vector_disable(&priv->tqp_vector[j]);
 375
 376         hns3_nic_uninit_irq(priv);
 377
 378         return ret;
 379 }
 380
 381 static int hns3_nic_net_open(struct net_device *netdev)
 382 {
 383         struct hnae3_handle *h = hns3_get_handle(netdev);
 384         struct hnae3_knic_private_info *kinfo;
 385         int i, ret;
 386
 387         if (hns3_nic_resetting(netdev))
 388                 return -EBUSY;
 389
 390         netif_carrier_off(netdev);
 391
 392         ret = hns3_nic_set_real_num_queue(netdev);
 393         if (ret)
 394                 return ret;
 395
 396         ret = hns3_nic_net_up(netdev);
 397         if (ret) {
 398                 netdev_err(netdev,
 399                            "hns net up fail, ret=%d!\n", ret);
 400                 return ret;
 401         }
 402
 403         kinfo = &h->kinfo;
 404         for (i = 0; i < HNAE3_MAX_USER_PRIO; i++) {
 405                 netdev_set_prio_tc_map(netdev, i,
 406                                        kinfo->prio_tc[i]);
 407         }
 408
 409         return 0;
 410 }
 411
 412 static void hns3_nic_net_down(struct net_device *netdev)
 413 {
 414         struct hns3_nic_priv *priv = netdev_priv(netdev);
 415         struct hnae3_handle *h = hns3_get_handle(netdev);
 416         const struct hnae3_ae_ops *ops;
 417         int i;
 418
 419         /* disable vectors */
 420         for (i = 0; i < priv->vector_num; i++)
 421                 hns3_vector_disable(&priv->tqp_vector[i]);
 422
 423         /* disable rcb */
 424         for (i = 0; i < h->kinfo.num_tqps; i++)
 425                 hns3_tqp_disable(h->kinfo.tqp[i]);
 426
 427         /* stop ae_dev */
 428         ops = priv->ae_handle->ae_algo->ops;
 429         if (ops->stop)
 430                 ops->stop(priv->ae_handle);
 431
 432         /* free irq resources */
 433         hns3_nic_uninit_irq(priv);
 434
 435         hns3_clear_all_ring(priv->ae_handle);
 436 }
 437
 438 static int hns3_nic_net_stop(struct net_device *netdev)
 439 {
 440         struct hns3_nic_priv *priv = netdev_priv(netdev);
 441
 442         if (test_and_set_bit(HNS3_NIC_STATE_DOWN, &priv->state))
 443                 return 0;
 444
 445         netif_tx_stop_all_queues(netdev);
 446         netif_carrier_off(netdev);
 447
 448         hns3_nic_net_down(netdev);
 449
 450         return 0;
 451 }
 452
 453 static int hns3_nic_uc_sync(struct net_device *netdev,
 454                             const unsigned char *addr)
 455 {
 456         struct hnae3_handle *h = hns3_get_handle(netdev);
 457
 458         if (h->ae_algo->ops->add_uc_addr)
 459                 return h->ae_algo->ops->add_uc_addr(h, addr);
 460
 461         return 0;
 462 }
 463
 464 static int hns3_nic_uc_unsync(struct net_device *netdev,
 465                               const unsigned char *addr)
 466 {
 467         struct hnae3_handle *h = hns3_get_handle(netdev);
 468
 469         if (h->ae_algo->ops->rm_uc_addr)
 470                 return h->ae_algo->ops->rm_uc_addr(h, addr);
 471
 472         return 0;
 473 }
 474
 475 static int hns3_nic_mc_sync(struct net_device *netdev,
 476                             const unsigned char *addr)
 477 {
 478         struct hnae3_handle *h = hns3_get_handle(netdev);
 479
 480         if (h->ae_algo->ops->add_mc_addr)
 481                 return h->ae_algo->ops->add_mc_addr(h, addr);
 482
 483         return 0;
 484 }
 485
 486 static int hns3_nic_mc_unsync(struct net_device *netdev,
 487                               const unsigned char *addr)
 488 {
 489         struct hnae3_handle *h = hns3_get_handle(netdev);
 490
 491         if (h->ae_algo->ops->rm_mc_addr)
 492                 return h->ae_algo->ops->rm_mc_addr(h, addr);
 493
 494         return 0;
 495 }
 496
 497 static u8 hns3_get_netdev_flags(struct net_device *netdev)
 498 {
 499         u8 flags = 0;
 500
 501         if (netdev->flags & IFF_PROMISC) {
 502                 flags = HNAE3_USER_UPE | HNAE3_USER_MPE;
 503         } else {
 504                 flags |= HNAE3_VLAN_FLTR;
 505                 if (netdev->flags & IFF_ALLMULTI)
 506                         flags |= HNAE3_USER_MPE;
 507         }
 508
 509         return flags;
 510 }
 511
 512 static void hns3_nic_set_rx_mode(struct net_device *netdev)
 513 {
 514         struct hnae3_handle *h = hns3_get_handle(netdev);
 515         u8 new_flags;
 516         int ret;
 517
 518         new_flags = hns3_get_netdev_flags(netdev);
 519
 520         ret = __dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync);
 521         if (ret) {
 522                 netdev_err(netdev, "sync uc address fail\n");
 523                 if (ret == -ENOSPC)
 524                         new_flags |= HNAE3_OVERFLOW_UPE;
 525         }
 526
 527         if (netdev->flags & IFF_MULTICAST) {
 528                 ret = __dev_mc_sync(netdev, hns3_nic_mc_sync,
 529                                     hns3_nic_mc_unsync);
 530                 if (ret) {
 531                         netdev_err(netdev, "sync mc address fail\n");
 532                         if (ret == -ENOSPC)
 533                                 new_flags |= HNAE3_OVERFLOW_MPE;
 534                 }
 535         }
 536
 537         hns3_update_promisc_mode(netdev, new_flags);
 538         /* User mode Promisc mode enable and vlan filtering is disabled to
 539          * let all packets in. MAC-VLAN Table overflow Promisc enabled and
 540          * vlan fitering is enabled
 541          */
 542         hns3_enable_vlan_filter(netdev, new_flags & HNAE3_VLAN_FLTR);
 543         h->netdev_flags = new_flags;
 544 }
 545
 546 int hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags)
 547 {
 548         struct hns3_nic_priv *priv = netdev_priv(netdev);
 549         struct hnae3_handle *h = priv->ae_handle;
 550
 551         if (h->ae_algo->ops->set_promisc_mode) {
 552                 return h->ae_algo->ops->set_promisc_mode(h,
 553                                                 promisc_flags & HNAE3_UPE,
 554                                                 promisc_flags & HNAE3_MPE);
 555         }
 556
 557         return 0;
 558 }
 559
 560 void hns3_enable_vlan_filter(struct net_device *netdev, bool enable)
 561 {
 562         struct hns3_nic_priv *priv = netdev_priv(netdev);
 563         struct hnae3_handle *h = priv->ae_handle;
 564         bool last_state;
 565
 566         if (h->pdev->revision >= 0x21 && h->ae_algo->ops->enable_vlan_filter) {
 567                 last_state = h->netdev_flags & HNAE3_VLAN_FLTR ? true : false;
 568                 if (enable != last_state) {
 569                         netdev_info(netdev,
 570                                     "%s vlan filter\n",
 571                                     enable ? "enable" : "disable");
 572                         h->ae_algo->ops->enable_vlan_filter(h, enable);
 573                 }
 574         }
 575 }
 576
 577 static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
 578                         u16 *mss, u32 *type_cs_vlan_tso)
 579 {
 580         u32 l4_offset, hdr_len;
 581         union l3_hdr_info l3;
 582         union l4_hdr_info l4;
 583         u32 l4_paylen;
 584         int ret;
 585
 586         if (!skb_is_gso(skb))
 587                 return 0;
 588
 589         ret = skb_cow_head(skb, 0);
 590         if (ret)
 591                 return ret;
 592
 593         l3.hdr = skb_network_header(skb);
 594         l4.hdr = skb_transport_header(skb);
 595
 596         /* Software should clear the IPv4's checksum field when tso is
 597          * needed.
 598          */
 599         if (l3.v4->version == 4)
 600                 l3.v4->check = 0;
 601
 602         /* tunnel packet.*/
 603         if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
 604                                          SKB_GSO_GRE_CSUM |
 605                                          SKB_GSO_UDP_TUNNEL |
 606                                          SKB_GSO_UDP_TUNNEL_CSUM)) {
 607                 if ((!(skb_shinfo(skb)->gso_type &
 608                     SKB_GSO_PARTIAL)) &&
 609                     (skb_shinfo(skb)->gso_type &
 610                     SKB_GSO_UDP_TUNNEL_CSUM)) {
 611                         /* Software should clear the udp's checksum
 612                          * field when tso is needed.
 613                          */
 614                         l4.udp->check = 0;
 615                 }
 616                 /* reset l3&l4 pointers from outer to inner headers */
 617                 l3.hdr = skb_inner_network_header(skb);
 618                 l4.hdr = skb_inner_transport_header(skb);
 619
 620                 /* Software should clear the IPv4's checksum field when
 621                  * tso is needed.
 622                  */
 623                 if (l3.v4->version == 4)
 624                         l3.v4->check = 0;
 625         }
 626
 627         /* normal or tunnel packet*/
 628         l4_offset = l4.hdr - skb->data;
 629         hdr_len = (l4.tcp->doff * 4) + l4_offset;
 630
 631         /* remove payload length from inner pseudo checksum when tso*/
 632         l4_paylen = skb->len - l4_offset;
 633         csum_replace_by_diff(&l4.tcp->check,
 634                              (__force __wsum)htonl(l4_paylen));
 635
 636         /* find the txbd field values */
 637         *paylen = skb->len - hdr_len;
 638         hnae3_set_bit(*type_cs_vlan_tso,
 639                       HNS3_TXD_TSO_B, 1);
 640
 641         /* get MSS for TSO */
 642         *mss = skb_shinfo(skb)->gso_size;
 643
 644         return 0;
 645 }
 646
 647 static int hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto,
 648                                 u8 *il4_proto)
 649 {
 650         union {
 651                 struct iphdr *v4;
 652                 struct ipv6hdr *v6;
 653                 unsigned char *hdr;
 654         } l3;
 655         unsigned char *l4_hdr;
 656         unsigned char *exthdr;
 657         u8 l4_proto_tmp;
 658         __be16 frag_off;
 659
 660         /* find outer header point */
 661         l3.hdr = skb_network_header(skb);
 662         l4_hdr = skb_transport_header(skb);
 663
 664         if (skb->protocol == htons(ETH_P_IPV6)) {
 665                 exthdr = l3.hdr + sizeof(*l3.v6);
 666                 l4_proto_tmp = l3.v6->nexthdr;
 667                 if (l4_hdr != exthdr)
 668                         ipv6_skip_exthdr(skb, exthdr - skb->data,
 669                                          &l4_proto_tmp, &frag_off);
 670         } else if (skb->protocol == htons(ETH_P_IP)) {
 671                 l4_proto_tmp = l3.v4->protocol;
 672         } else {
 673                 return -EINVAL;
 674         }
 675
 676         *ol4_proto = l4_proto_tmp;
 677
 678         /* tunnel packet */
 679         if (!skb->encapsulation) {
 680                 *il4_proto = 0;
 681                 return 0;
 682         }
 683
 684         /* find inner header point */
 685         l3.hdr = skb_inner_network_header(skb);
 686         l4_hdr = skb_inner_transport_header(skb);
 687
 688         if (l3.v6->version == 6) {
 689                 exthdr = l3.hdr + sizeof(*l3.v6);
 690                 l4_proto_tmp = l3.v6->nexthdr;
 691                 if (l4_hdr != exthdr)
 692                         ipv6_skip_exthdr(skb, exthdr - skb->data,
 693                                          &l4_proto_tmp, &frag_off);
 694         } else if (l3.v4->version == 4) {
 695                 l4_proto_tmp = l3.v4->protocol;
 696         }
 697
 698         *il4_proto = l4_proto_tmp;
 699
 700         return 0;
 701 }
 702
 703 static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto,
 704                                 u8 il4_proto, u32 *type_cs_vlan_tso,
 705                                 u32 *ol_type_vlan_len_msec)
 706 {
 707         union {
 708                 struct iphdr *v4;
 709                 struct ipv6hdr *v6;
 710                 unsigned char *hdr;
 711         } l3;
 712         union {
 713                 struct tcphdr *tcp;
 714                 struct udphdr *udp;
 715                 struct gre_base_hdr *gre;
 716                 unsigned char *hdr;
 717         } l4;
 718         unsigned char *l2_hdr;
 719         u8 l4_proto = ol4_proto;
 720         u32 ol2_len;
 721         u32 ol3_len;
 722         u32 ol4_len;
 723         u32 l2_len;
 724         u32 l3_len;
 725
 726         l3.hdr = skb_network_header(skb);
 727         l4.hdr = skb_transport_header(skb);
 728
 729         /* compute L2 header size for normal packet, defined in 2 Bytes */
 730         l2_len = l3.hdr - skb->data;
 731         hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
 732                         HNS3_TXD_L2LEN_S, l2_len >> 1);
 733
 734         /* tunnel packet*/
 735         if (skb->encapsulation) {
 736                 /* compute OL2 header size, defined in 2 Bytes */
 737                 ol2_len = l2_len;
 738                 hnae3_set_field(*ol_type_vlan_len_msec,
 739                                 HNS3_TXD_L2LEN_M,
 740                                 HNS3_TXD_L2LEN_S, ol2_len >> 1);
 741
 742                 /* compute OL3 header size, defined in 4 Bytes */
 743                 ol3_len = l4.hdr - l3.hdr;
 744                 hnae3_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L3LEN_M,
 745                                 HNS3_TXD_L3LEN_S, ol3_len >> 2);
 746
 747                 /* MAC in UDP, MAC in GRE (0x6558)*/
 748                 if ((ol4_proto == IPPROTO_UDP) || (ol4_proto == IPPROTO_GRE)) {
 749                         /* switch MAC header ptr from outer to inner header.*/
 750                         l2_hdr = skb_inner_mac_header(skb);
 751
 752                         /* compute OL4 header size, defined in 4 Bytes. */
 753                         ol4_len = l2_hdr - l4.hdr;
 754                         hnae3_set_field(*ol_type_vlan_len_msec,
 755                                         HNS3_TXD_L4LEN_M, HNS3_TXD_L4LEN_S,
 756                                         ol4_len >> 2);
 757
 758                         /* switch IP header ptr from outer to inner header */
 759                         l3.hdr = skb_inner_network_header(skb);
 760
 761                         /* compute inner l2 header size, defined in 2 Bytes. */
 762                         l2_len = l3.hdr - l2_hdr;
 763                         hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
 764                                         HNS3_TXD_L2LEN_S, l2_len >> 1);
 765                 } else {
 766                         /* skb packet types not supported by hardware,
 767                          * txbd len fild doesn't be filled.
 768                          */
 769                         return;
 770                 }
 771
 772                 /* switch L4 header pointer from outer to inner */
 773                 l4.hdr = skb_inner_transport_header(skb);
 774
 775                 l4_proto = il4_proto;
 776         }
 777
 778         /* compute inner(/normal) L3 header size, defined in 4 Bytes */
 779         l3_len = l4.hdr - l3.hdr;
 780         hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_M,
 781                         HNS3_TXD_L3LEN_S, l3_len >> 2);
 782
 783         /* compute inner(/normal) L4 header size, defined in 4 Bytes */
 784         switch (l4_proto) {
 785         case IPPROTO_TCP:
 786                 hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
 787                                 HNS3_TXD_L4LEN_S, l4.tcp->doff);
 788                 break;
 789         case IPPROTO_SCTP:
 790                 hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
 791                                 HNS3_TXD_L4LEN_S,
 792                                 (sizeof(struct sctphdr) >> 2));
 793                 break;
 794         case IPPROTO_UDP:
 795                 hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
 796                                 HNS3_TXD_L4LEN_S,
 797                                 (sizeof(struct udphdr) >> 2));
 798                 break;
 799         default:
 800                 /* skb packet types not supported by hardware,
 801                  * txbd len fild doesn't be filled.
 802                  */
 803                 return;
 804         }
 805 }
 806
 807 /* when skb->encapsulation is 0, skb->ip_summed is CHECKSUM_PARTIAL
 808  * and it is udp packet, which has a dest port as the IANA assigned.
 809  * the hardware is expected to do the checksum offload, but the
 810  * hardware will not do the checksum offload when udp dest port is
 811  * 4789.
 812  */
 813 static bool hns3_tunnel_csum_bug(struct sk_buff *skb)
 814 {
 815 #define IANA_VXLAN_PORT 4789
 816         union {
 817                 struct tcphdr *tcp;
 818                 struct udphdr *udp;
 819                 struct gre_base_hdr *gre;
 820                 unsigned char *hdr;
 821         } l4;
 822
 823         l4.hdr = skb_transport_header(skb);
 824
 825         if (!(!skb->encapsulation && l4.udp->dest == htons(IANA_VXLAN_PORT)))
 826                 return false;
 827
 828         skb_checksum_help(skb);
 829
 830         return true;
 831 }
 832
 833 static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto,
 834                                    u8 il4_proto, u32 *type_cs_vlan_tso,
 835                                    u32 *ol_type_vlan_len_msec)
 836 {
 837         union {
 838                 struct iphdr *v4;
 839                 struct ipv6hdr *v6;
 840                 unsigned char *hdr;
 841         } l3;
 842         u32 l4_proto = ol4_proto;
 843
 844         l3.hdr = skb_network_header(skb);
 845
 846         /* define OL3 type and tunnel type(OL4).*/
 847         if (skb->encapsulation) {
 848                 /* define outer network header type.*/
 849                 if (skb->protocol == htons(ETH_P_IP)) {
 850                         if (skb_is_gso(skb))
 851                                 hnae3_set_field(*ol_type_vlan_len_msec,
 852                                                 HNS3_TXD_OL3T_M,
 853                                                 HNS3_TXD_OL3T_S,
 854                                                 HNS3_OL3T_IPV4_CSUM);
 855                         else
 856                                 hnae3_set_field(*ol_type_vlan_len_msec,
 857                                                 HNS3_TXD_OL3T_M,
 858                                                 HNS3_TXD_OL3T_S,
 859                                                 HNS3_OL3T_IPV4_NO_CSUM);
 860
 861                 } else if (skb->protocol == htons(ETH_P_IPV6)) {
 862                         hnae3_set_field(*ol_type_vlan_len_msec, HNS3_TXD_OL3T_M,
 863                                         HNS3_TXD_OL3T_S, HNS3_OL3T_IPV6);
 864                 }
 865
 866                 /* define tunnel type(OL4).*/
 867                 switch (l4_proto) {
 868                 case IPPROTO_UDP:
 869                         hnae3_set_field(*ol_type_vlan_len_msec,
 870                                         HNS3_TXD_TUNTYPE_M,
 871                                         HNS3_TXD_TUNTYPE_S,
 872                                         HNS3_TUN_MAC_IN_UDP);
 873                         break;
 874                 case IPPROTO_GRE:
 875                         hnae3_set_field(*ol_type_vlan_len_msec,
 876                                         HNS3_TXD_TUNTYPE_M,
 877                                         HNS3_TXD_TUNTYPE_S,
 878                                         HNS3_TUN_NVGRE);
 879                         break;
 880                 default:
 881                         /* drop the skb tunnel packet if hardware don't support,
 882                          * because hardware can't calculate csum when TSO.
 883                          */
 884                         if (skb_is_gso(skb))
 885                                 return -EDOM;
 886
 887                         /* the stack computes the IP header already,
 888                          * driver calculate l4 checksum when not TSO.
 889                          */
 890                         skb_checksum_help(skb);
 891                         return 0;
 892                 }
 893
 894                 l3.hdr = skb_inner_network_header(skb);
 895                 l4_proto = il4_proto;
 896         }
 897
 898         if (l3.v4->version == 4) {
 899                 hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
 900                                 HNS3_TXD_L3T_S, HNS3_L3T_IPV4);
 901
 902                 /* the stack computes the IP header already, the only time we
 903                  * need the hardware to recompute it is in the case of TSO.
 904                  */
 905                 if (skb_is_gso(skb))
 906                         hnae3_set_bit(*type_cs_vlan_tso, HNS3_TXD_L3CS_B, 1);
 907         } else if (l3.v6->version == 6) {
 908                 hnae3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
 909                                 HNS3_TXD_L3T_S, HNS3_L3T_IPV6);
 910         }
 911
 912         switch (l4_proto) {
 913         case IPPROTO_TCP:
 914                 hnae3_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
 915                 hnae3_set_field(*type_cs_vlan_tso,
 916                                 HNS3_TXD_L4T_M,
 917                                 HNS3_TXD_L4T_S,
 918                                 HNS3_L4T_TCP);
 919                 break;
 920         case IPPROTO_UDP:
 921                 if (hns3_tunnel_csum_bug(skb))
 922                         break;
 923
 924                 hnae3_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
 925                 hnae3_set_field(*type_cs_vlan_tso,
 926                                 HNS3_TXD_L4T_M,
 927                                 HNS3_TXD_L4T_S,
 928                                 HNS3_L4T_UDP);
 929                 break;
 930         case IPPROTO_SCTP:
 931                 hnae3_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
 932                 hnae3_set_field(*type_cs_vlan_tso,
 933                                 HNS3_TXD_L4T_M,
 934                                 HNS3_TXD_L4T_S,
 935                                 HNS3_L4T_SCTP);
 936                 break;
 937         default:
 938                 /* drop the skb tunnel packet if hardware don't support,
 939                  * because hardware can't calculate csum when TSO.
 940                  */
 941                 if (skb_is_gso(skb))
 942                         return -EDOM;
 943
 944                 /* the stack computes the IP header already,
 945                  * driver calculate l4 checksum when not TSO.
 946                  */
 947                 skb_checksum_help(skb);
 948                 return 0;
 949         }
 950
 951         return 0;
 952 }
 953
 954 static void hns3_set_txbd_baseinfo(u16 *bdtp_fe_sc_vld_ra_ri, int frag_end)
 955 {
 956         /* Config bd buffer end */
 957         hnae3_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_BDTYPE_M,
 958                         HNS3_TXD_BDTYPE_S, 0);
 959         hnae3_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_FE_B, !!frag_end);
 960         hnae3_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_VLD_B, 1);
 961         hnae3_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_SC_M, HNS3_TXD_SC_S, 0);
 962 }
 963
 964 static int hns3_fill_desc_vtags(struct sk_buff *skb,
 965                                 struct hns3_enet_ring *tx_ring,
 966                                 u32 *inner_vlan_flag,
 967                                 u32 *out_vlan_flag,
 968                                 u16 *inner_vtag,
 969                                 u16 *out_vtag)
 970 {
 971 #define HNS3_TX_VLAN_PRIO_SHIFT 13
 972
 973         if (skb->protocol == htons(ETH_P_8021Q) &&
 974             !(tx_ring->tqp->handle->kinfo.netdev->features &
 975             NETIF_F_HW_VLAN_CTAG_TX)) {
 976                 /* When HW VLAN acceleration is turned off, and the stack
 977                  * sets the protocol to 802.1q, the driver just need to
 978                  * set the protocol to the encapsulated ethertype.
 979                  */
 980                 skb->protocol = vlan_get_protocol(skb);
 981                 return 0;
 982         }
 983
 984         if (skb_vlan_tag_present(skb)) {
 985                 u16 vlan_tag;
 986
 987                 vlan_tag = skb_vlan_tag_get(skb);
 988                 vlan_tag |= (skb->priority & 0x7) << HNS3_TX_VLAN_PRIO_SHIFT;
 989
 990                 /* Based on hw strategy, use out_vtag in two layer tag case,
 991                  * and use inner_vtag in one tag case.
 992                  */
 993                 if (skb->protocol == htons(ETH_P_8021Q)) {
 994                         hnae3_set_bit(*out_vlan_flag, HNS3_TXD_OVLAN_B, 1);
 995                         *out_vtag = vlan_tag;
 996                 } else {
 997                         hnae3_set_bit(*inner_vlan_flag, HNS3_TXD_VLAN_B, 1);
 998                         *inner_vtag = vlan_tag;
 999                 }
1000         } else if (skb->protocol == htons(ETH_P_8021Q)) {
1001                 struct vlan_ethhdr *vhdr;
1002                 int rc;
1003
1004                 rc = skb_cow_head(skb, 0);
1005                 if (rc < 0)
1006                         return rc;
1007                 vhdr = (struct vlan_ethhdr *)skb->data;
1008                 vhdr->h_vlan_TCI |= cpu_to_be16((skb->priority & 0x7)
1009                                         << HNS3_TX_VLAN_PRIO_SHIFT);
1010         }
1011
1012         skb->protocol = vlan_get_protocol(skb);
1013         return 0;
1014 }
1015
1016 static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv,
1017                           int size, int frag_end, enum hns_desc_type type)
1018 {
1019         struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
1020         struct hns3_desc *desc = &ring->desc[ring->next_to_use];
1021         struct device *dev = ring_to_dev(ring);
1022         u32 ol_type_vlan_len_msec = 0;
1023         u16 bdtp_fe_sc_vld_ra_ri = 0;
1024         struct skb_frag_struct *frag;
1025         unsigned int frag_buf_num;
1026         u32 type_cs_vlan_tso = 0;
1027         struct sk_buff *skb;
1028         u16 inner_vtag = 0;
1029         u16 out_vtag = 0;
1030         unsigned int k;
1031         int sizeoflast;
1032         u32 paylen = 0;
1033         dma_addr_t dma;
1034         u16 mss = 0;
1035         u8 ol4_proto;
1036         u8 il4_proto;
1037         int ret;
1038
1039         if (type == DESC_TYPE_SKB) {
1040                 skb = (struct sk_buff *)priv;
1041                 paylen = skb->len;
1042
1043                 ret = hns3_fill_desc_vtags(skb, ring, &type_cs_vlan_tso,
1044                                            &ol_type_vlan_len_msec,
1045                                            &inner_vtag, &out_vtag);
1046                 if (unlikely(ret))
1047                         return ret;
1048
1049                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1050                         skb_reset_mac_len(skb);
1051
1052                         ret = hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto);
1053                         if (ret)
1054                                 return ret;
1055                         hns3_set_l2l3l4_len(skb, ol4_proto, il4_proto,
1056                                             &type_cs_vlan_tso,
1057                                             &ol_type_vlan_len_msec);
1058                         ret = hns3_set_l3l4_type_csum(skb, ol4_proto, il4_proto,
1059                                                       &type_cs_vlan_tso,
1060                                                       &ol_type_vlan_len_msec);
1061                         if (ret)
1062                                 return ret;
1063
1064                         ret = hns3_set_tso(skb, &paylen, &mss,
1065                                            &type_cs_vlan_tso);
1066                         if (ret)
1067                                 return ret;
1068                 }
1069
1070                 /* Set txbd */
1071                 desc->tx.ol_type_vlan_len_msec =
1072                         cpu_to_le32(ol_type_vlan_len_msec);
1073                 desc->tx.type_cs_vlan_tso_len =
1074                         cpu_to_le32(type_cs_vlan_tso);
1075                 desc->tx.paylen = cpu_to_le32(paylen);
1076                 desc->tx.mss = cpu_to_le16(mss);
1077                 desc->tx.vlan_tag = cpu_to_le16(inner_vtag);
1078                 desc->tx.outer_vlan_tag = cpu_to_le16(out_vtag);
1079
1080                 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
1081         } else {
1082                 frag = (struct skb_frag_struct *)priv;
1083                 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
1084         }
1085
1086         if (dma_mapping_error(ring->dev, dma)) {
1087                 ring->stats.sw_err_cnt++;
1088                 return -ENOMEM;
1089         }
1090
1091         desc_cb->length = size;
1092
1093         frag_buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
1094         sizeoflast = size % HNS3_MAX_BD_SIZE;
1095         sizeoflast = sizeoflast ? sizeoflast : HNS3_MAX_BD_SIZE;
1096
1097         /* When frag size is bigger than hardware limit, split this frag */
1098         for (k = 0; k < frag_buf_num; k++) {
1099                 /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */
1100                 desc_cb->priv = priv;
1101                 desc_cb->dma = dma + HNS3_MAX_BD_SIZE * k;
1102                 desc_cb->type = (type == DESC_TYPE_SKB && !k) ?
1103                                         DESC_TYPE_SKB : DESC_TYPE_PAGE;
1104
1105                 /* now, fill the descriptor */
1106                 desc->addr = cpu_to_le64(dma + HNS3_MAX_BD_SIZE * k);
1107                 desc->tx.send_size = cpu_to_le16((k == frag_buf_num - 1) ?
1108                                 (u16)sizeoflast : (u16)HNS3_MAX_BD_SIZE);
1109                 hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri,
1110                                        frag_end && (k == frag_buf_num - 1) ?
1111                                                 1 : 0);
1112                 desc->tx.bdtp_fe_sc_vld_ra_ri =
1113                                 cpu_to_le16(bdtp_fe_sc_vld_ra_ri);
1114
1115                 /* move ring pointer to next.*/
1116                 ring_ptr_move_fw(ring, next_to_use);
1117
1118                 desc_cb = &ring->desc_cb[ring->next_to_use];
1119                 desc = &ring->desc[ring->next_to_use];
1120         }
1121
1122         return 0;
1123 }
1124
1125 static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum,
1126                                    struct hns3_enet_ring *ring)
1127 {
1128         struct sk_buff *skb = *out_skb;
1129         struct skb_frag_struct *frag;
1130         int bdnum_for_frag;
1131         int frag_num;
1132         int buf_num;
1133         int size;
1134         int i;
1135
1136         size = skb_headlen(skb);
1137         buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
1138
1139         frag_num = skb_shinfo(skb)->nr_frags;
1140         for (i = 0; i < frag_num; i++) {
1141                 frag = &skb_shinfo(skb)->frags[i];
1142                 size = skb_frag_size(frag);
1143                 bdnum_for_frag =
1144                         (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
1145                 if (bdnum_for_frag > HNS3_MAX_BD_PER_FRAG)
1146                         return -ENOMEM;
1147
1148                 buf_num += bdnum_for_frag;
1149         }
1150
1151         if (buf_num > ring_space(ring))
1152                 return -EBUSY;
1153
1154         *bnum = buf_num;
1155         return 0;
1156 }
1157
1158 static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
1159                                   struct hns3_enet_ring *ring)
1160 {
1161         struct sk_buff *skb = *out_skb;
1162         int buf_num;
1163
1164         /* No. of segments (plus a header) */
1165         buf_num = skb_shinfo(skb)->nr_frags + 1;
1166
1167         if (unlikely(ring_space(ring) < buf_num))
1168                 return -EBUSY;
1169
1170         *bnum = buf_num;
1171
1172         return 0;
1173 }
1174
1175 static void hns3_clear_desc(struct hns3_enet_ring *ring, int next_to_use_orig)
1176 {
1177         struct device *dev = ring_to_dev(ring);
1178         unsigned int i;
1179
1180         for (i = 0; i < ring->desc_num; i++) {
1181                 /* check if this is where we started */
1182                 if (ring->next_to_use == next_to_use_orig)
1183                         break;
1184
1185                 /* unmap the descriptor dma address */
1186                 if (ring->desc_cb[ring->next_to_use].type == DESC_TYPE_SKB)
1187                         dma_unmap_single(dev,
1188                                          ring->desc_cb[ring->next_to_use].dma,
1189                                         ring->desc_cb[ring->next_to_use].length,
1190                                         DMA_TO_DEVICE);
1191                 else if (ring->desc_cb[ring->next_to_use].length)
1192                         dma_unmap_page(dev,
1193                                        ring->desc_cb[ring->next_to_use].dma,
1194                                        ring->desc_cb[ring->next_to_use].length,
1195                                        DMA_TO_DEVICE);
1196
1197                 ring->desc_cb[ring->next_to_use].length = 0;
1198
1199                 /* rollback one */
1200                 ring_ptr_move_bw(ring, next_to_use);
1201         }
1202 }
1203
1204 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
1205 {
1206         struct hns3_nic_priv *priv = netdev_priv(netdev);
1207         struct hns3_nic_ring_data *ring_data =
1208                 &tx_ring_data(priv, skb->queue_mapping);
1209         struct hns3_enet_ring *ring = ring_data->ring;
1210         struct netdev_queue *dev_queue;
1211         struct skb_frag_struct *frag;
1212         int next_to_use_head;
1213         int next_to_use_frag;
1214         int buf_num;
1215         int seg_num;
1216         int size;
1217         int ret;
1218         int i;
1219
1220         /* Prefetch the data used later */
1221         prefetch(skb->data);
1222
1223         switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
1224         case -EBUSY:
1225                 u64_stats_update_begin(&ring->syncp);
1226                 ring->stats.tx_busy++;
1227                 u64_stats_update_end(&ring->syncp);
1228
1229                 goto out_net_tx_busy;
1230         case -ENOMEM:
1231                 u64_stats_update_begin(&ring->syncp);
1232                 ring->stats.sw_err_cnt++;
1233                 u64_stats_update_end(&ring->syncp);
1234                 netdev_err(netdev, "no memory to xmit!\n");
1235
1236                 goto out_err_tx_ok;
1237         default:
1238                 break;
1239         }
1240
1241         /* No. of segments (plus a header) */
1242         seg_num = skb_shinfo(skb)->nr_frags + 1;
1243         /* Fill the first part */
1244         size = skb_headlen(skb);
1245
1246         next_to_use_head = ring->next_to_use;
1247
1248         ret = priv->ops.fill_desc(ring, skb, size, seg_num == 1 ? 1 : 0,
1249                                   DESC_TYPE_SKB);
1250         if (ret)
1251                 goto head_fill_err;
1252
1253         next_to_use_frag = ring->next_to_use;
1254         /* Fill the fragments */
1255         for (i = 1; i < seg_num; i++) {
1256                 frag = &skb_shinfo(skb)->frags[i - 1];
1257                 size = skb_frag_size(frag);
1258
1259                 ret = priv->ops.fill_desc(ring, frag, size,
1260                                           seg_num - 1 == i ? 1 : 0,
1261                                           DESC_TYPE_PAGE);
1262
1263                 if (ret)
1264                         goto frag_fill_err;
1265         }
1266
1267         /* Complete translate all packets */
1268         dev_queue = netdev_get_tx_queue(netdev, ring_data->queue_index);
1269         netdev_tx_sent_queue(dev_queue, skb->len);
1270
1271         wmb(); /* Commit all data before submit */
1272
1273         hnae3_queue_xmit(ring->tqp, buf_num);
1274
1275         return NETDEV_TX_OK;
1276
1277 frag_fill_err:
1278         hns3_clear_desc(ring, next_to_use_frag);
1279
1280 head_fill_err:
1281         hns3_clear_desc(ring, next_to_use_head);
1282
1283 out_err_tx_ok:
1284         dev_kfree_skb_any(skb);
1285         return NETDEV_TX_OK;
1286
1287 out_net_tx_busy:
1288         netif_stop_subqueue(netdev, ring_data->queue_index);
1289         smp_mb(); /* Commit all data before submit */
1290
1291         return NETDEV_TX_BUSY;
1292 }
1293
1294 static int hns3_nic_net_set_mac_address(struct net_device *netdev, void *p)
1295 {
1296         struct hnae3_handle *h = hns3_get_handle(netdev);
1297         struct sockaddr *mac_addr = p;
1298         int ret;
1299
1300         if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1301                 return -EADDRNOTAVAIL;
1302
1303         if (ether_addr_equal(netdev->dev_addr, mac_addr->sa_data)) {
1304                 netdev_info(netdev, "already using mac address %pM\n",
1305                             mac_addr->sa_data);
1306                 return 0;
1307         }
1308
1309         ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data, false);
1310         if (ret) {
1311                 netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret);
1312                 return ret;
1313         }
1314
1315         ether_addr_copy(netdev->dev_addr, mac_addr->sa_data);
1316
1317         return 0;
1318 }
1319
1320 static int hns3_nic_do_ioctl(struct net_device *netdev,
1321                              struct ifreq *ifr, int cmd)
1322 {
1323         struct hnae3_handle *h = hns3_get_handle(netdev);
1324
1325         if (!netif_running(netdev))
1326                 return -EINVAL;
1327
1328         if (!h->ae_algo->ops->do_ioctl)
1329                 return -EOPNOTSUPP;
1330
1331         return h->ae_algo->ops->do_ioctl(h, ifr, cmd);
1332 }
1333
1334 static int hns3_nic_set_features(struct net_device *netdev,
1335                                  netdev_features_t features)
1336 {
1337         netdev_features_t changed = netdev->features ^ features;
1338         struct hns3_nic_priv *priv = netdev_priv(netdev);
1339         struct hnae3_handle *h = priv->ae_handle;
1340         int ret;
1341
1342         if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) {
1343                 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1344                         priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
1345                 else
1346                         priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
1347         }
1348
1349         if (changed & (NETIF_F_GRO_HW) && h->ae_algo->ops->set_gro_en) {
1350                 if (features & NETIF_F_GRO_HW)
1351                         ret = h->ae_algo->ops->set_gro_en(h, true);
1352                 else
1353                         ret = h->ae_algo->ops->set_gro_en(h, false);
1354                 if (ret)
1355                         return ret;
1356         }
1357
1358         if ((changed & NETIF_F_HW_VLAN_CTAG_FILTER) &&
1359             h->ae_algo->ops->enable_vlan_filter) {
1360                 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
1361                         h->ae_algo->ops->enable_vlan_filter(h, true);
1362                 else
1363                         h->ae_algo->ops->enable_vlan_filter(h, false);
1364         }
1365
1366         if ((changed & NETIF_F_HW_VLAN_CTAG_RX) &&
1367             h->ae_algo->ops->enable_hw_strip_rxvtag) {
1368                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1369                         ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, true);
1370                 else
1371                         ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, false);
1372
1373                 if (ret)
1374                         return ret;
1375         }
1376
1377         if ((changed & NETIF_F_NTUPLE) && h->ae_algo->ops->enable_fd) {
1378                 if (features & NETIF_F_NTUPLE)
1379                         h->ae_algo->ops->enable_fd(h, true);
1380                 else
1381                         h->ae_algo->ops->enable_fd(h, false);
1382         }
1383
1384         netdev->features = features;
1385         return 0;
1386 }
1387
1388 static void hns3_nic_get_stats64(struct net_device *netdev,
1389                                  struct rtnl_link_stats64 *stats)
1390 {
1391         struct hns3_nic_priv *priv = netdev_priv(netdev);
1392         int queue_num = priv->ae_handle->kinfo.num_tqps;
1393         struct hnae3_handle *handle = priv->ae_handle;
1394         struct hns3_enet_ring *ring;
1395         unsigned int start;
1396         unsigned int idx;
1397         u64 tx_bytes = 0;
1398         u64 rx_bytes = 0;
1399         u64 tx_pkts = 0;
1400         u64 rx_pkts = 0;
1401         u64 tx_drop = 0;
1402         u64 rx_drop = 0;
1403
1404         if (test_bit(HNS3_NIC_STATE_DOWN, &priv->state))
1405                 return;
1406
1407         handle->ae_algo->ops->update_stats(handle, &netdev->stats);
1408
1409         for (idx = 0; idx < queue_num; idx++) {
1410                 /* fetch the tx stats */
1411                 ring = priv->ring_data[idx].ring;
1412                 do {
1413                         start = u64_stats_fetch_begin_irq(&ring->syncp);
1414                         tx_bytes += ring->stats.tx_bytes;
1415                         tx_pkts += ring->stats.tx_pkts;
1416                         tx_drop += ring->stats.tx_busy;
1417                         tx_drop += ring->stats.sw_err_cnt;
1418                 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
1419
1420                 /* fetch the rx stats */
1421                 ring = priv->ring_data[idx + queue_num].ring;
1422                 do {
1423                         start = u64_stats_fetch_begin_irq(&ring->syncp);
1424                         rx_bytes += ring->stats.rx_bytes;
1425                         rx_pkts += ring->stats.rx_pkts;
1426                         rx_drop += ring->stats.non_vld_descs;
1427                         rx_drop += ring->stats.err_pkt_len;
1428                         rx_drop += ring->stats.l2_err;
1429                 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
1430         }
1431
1432         stats->tx_bytes = tx_bytes;
1433         stats->tx_packets = tx_pkts;
1434         stats->rx_bytes = rx_bytes;
1435         stats->rx_packets = rx_pkts;
1436
1437         stats->rx_errors = netdev->stats.rx_errors;
1438         stats->multicast = netdev->stats.multicast;
1439         stats->rx_length_errors = netdev->stats.rx_length_errors;
1440         stats->rx_crc_errors = netdev->stats.rx_crc_errors;
1441         stats->rx_missed_errors = netdev->stats.rx_missed_errors;
1442
1443         stats->tx_errors = netdev->stats.tx_errors;
1444         stats->rx_dropped = rx_drop + netdev->stats.rx_dropped;
1445         stats->tx_dropped = tx_drop + netdev->stats.tx_dropped;
1446         stats->collisions = netdev->stats.collisions;
1447         stats->rx_over_errors = netdev->stats.rx_over_errors;
1448         stats->rx_frame_errors = netdev->stats.rx_frame_errors;
1449         stats->rx_fifo_errors = netdev->stats.rx_fifo_errors;
1450         stats->tx_aborted_errors = netdev->stats.tx_aborted_errors;
1451         stats->tx_carrier_errors = netdev->stats.tx_carrier_errors;
1452         stats->tx_fifo_errors = netdev->stats.tx_fifo_errors;
1453         stats->tx_heartbeat_errors = netdev->stats.tx_heartbeat_errors;
1454         stats->tx_window_errors = netdev->stats.tx_window_errors;
1455         stats->rx_compressed = netdev->stats.rx_compressed;
1456         stats->tx_compressed = netdev->stats.tx_compressed;
1457 }
1458
1459 static int hns3_setup_tc(struct net_device *netdev, void *type_data)
1460 {
1461         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
1462         struct hnae3_handle *h = hns3_get_handle(netdev);
1463         struct hnae3_knic_private_info *kinfo = &h->kinfo;
1464         u8 *prio_tc = mqprio_qopt->qopt.prio_tc_map;
1465         u8 tc = mqprio_qopt->qopt.num_tc;
1466         u16 mode = mqprio_qopt->mode;
1467         u8 hw = mqprio_qopt->qopt.hw;
1468         bool if_running;
1469         int ret;
1470
1471         if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS &&
1472                mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0)))
1473                 return -EOPNOTSUPP;
1474
1475         if (tc > HNAE3_MAX_TC)
1476                 return -EINVAL;
1477
1478         if (!netdev)
1479                 return -EINVAL;
1480
1481         if_running = netif_running(netdev);
1482         if (if_running) {
1483                 hns3_nic_net_stop(netdev);
1484                 msleep(100);
1485         }
1486
1487         ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
1488                 kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
1489         if (ret)
1490                 goto out;
1491
1492         ret = hns3_nic_set_real_num_queue(netdev);
1493
1494 out:
1495         if (if_running)
1496                 hns3_nic_net_open(netdev);
1497
1498         return ret;
1499 }
1500
1501 static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type,
1502                              void *type_data)
1503 {
1504         if (type != TC_SETUP_QDISC_MQPRIO)
1505                 return -EOPNOTSUPP;
1506
1507         return hns3_setup_tc(dev, type_data);
1508 }
1509
1510 static int hns3_vlan_rx_add_vid(struct net_device *netdev,
1511                                 __be16 proto, u16 vid)
1512 {
1513         struct hnae3_handle *h = hns3_get_handle(netdev);
1514         struct hns3_nic_priv *priv = netdev_priv(netdev);
1515         int ret = -EIO;
1516
1517         if (h->ae_algo->ops->set_vlan_filter)
1518                 ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false);
1519
1520         if (!ret)
1521                 set_bit(vid, priv->active_vlans);
1522
1523         return ret;
1524 }
1525
1526 static int hns3_vlan_rx_kill_vid(struct net_device *netdev,
1527                                  __be16 proto, u16 vid)
1528 {
1529         struct hnae3_handle *h = hns3_get_handle(netdev);
1530         struct hns3_nic_priv *priv = netdev_priv(netdev);
1531         int ret = -EIO;
1532
1533         if (h->ae_algo->ops->set_vlan_filter)
1534                 ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true);
1535
1536         if (!ret)
1537                 clear_bit(vid, priv->active_vlans);
1538
1539         return ret;
1540 }
1541
1542 static int hns3_restore_vlan(struct net_device *netdev)
1543 {
1544         struct hns3_nic_priv *priv = netdev_priv(netdev);
1545         int ret = 0;
1546         u16 vid;
1547
1548         for_each_set_bit(vid, priv->active_vlans, VLAN_N_VID) {
1549                 ret = hns3_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
1550                 if (ret) {
1551                         netdev_err(netdev, "Restore vlan: %d filter, ret:%d\n",
1552                                    vid, ret);
1553                         return ret;
1554                 }
1555         }
1556
1557         return ret;
1558 }
1559
1560 static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1561                                 u8 qos, __be16 vlan_proto)
1562 {
1563         struct hnae3_handle *h = hns3_get_handle(netdev);
1564         int ret = -EIO;
1565
1566         if (h->ae_algo->ops->set_vf_vlan_filter)
1567                 ret = h->ae_algo->ops->set_vf_vlan_filter(h, vf, vlan,
1568                                                    qos, vlan_proto);
1569
1570         return ret;
1571 }
1572
1573 static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu)
1574 {
1575         struct hnae3_handle *h = hns3_get_handle(netdev);
1576         int ret;
1577
1578         if (!h->ae_algo->ops->set_mtu)
1579                 return -EOPNOTSUPP;
1580
1581         ret = h->ae_algo->ops->set_mtu(h, new_mtu);
1582         if (ret)
1583                 netdev_err(netdev, "failed to change MTU in hardware %d\n",
1584                            ret);
1585         else
1586                 netdev->mtu = new_mtu;
1587
1588         return ret;
1589 }
1590
1591 static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
1592 {
1593         struct hns3_nic_priv *priv = netdev_priv(ndev);
1594         struct hns3_enet_ring *tx_ring = NULL;
1595         int timeout_queue = 0;
1596         int hw_head, hw_tail;
1597         int i;
1598
1599         /* Find the stopped queue the same way the stack does */
1600         for (i = 0; i < ndev->real_num_tx_queues; i++) {
1601                 struct netdev_queue *q;
1602                 unsigned long trans_start;
1603
1604                 q = netdev_get_tx_queue(ndev, i);
1605                 trans_start = q->trans_start;
1606                 if (netif_xmit_stopped(q) &&
1607                     time_after(jiffies,
1608                                (trans_start + ndev->watchdog_timeo))) {
1609                         timeout_queue = i;
1610                         break;
1611                 }
1612         }
1613
1614         if (i == ndev->num_tx_queues) {
1615                 netdev_info(ndev,
1616                             "no netdev TX timeout queue found, timeout count: %llu\n",
1617                             priv->tx_timeout_count);
1618                 return false;
1619         }
1620
1621         tx_ring = priv->ring_data[timeout_queue].ring;
1622
1623         hw_head = readl_relaxed(tx_ring->tqp->io_base +
1624                                 HNS3_RING_TX_RING_HEAD_REG);
1625         hw_tail = readl_relaxed(tx_ring->tqp->io_base +
1626                                 HNS3_RING_TX_RING_TAIL_REG);
1627         netdev_info(ndev,
1628                     "tx_timeout count: %llu, queue id: %d, SW_NTU: 0x%x, SW_NTC: 0x%x, HW_HEAD: 0x%x, HW_TAIL: 0x%x, INT: 0x%x\n",
1629                     priv->tx_timeout_count,
1630                     timeout_queue,
1631                     tx_ring->next_to_use,
1632                     tx_ring->next_to_clean,
1633                     hw_head,
1634                     hw_tail,
1635                     readl(tx_ring->tqp_vector->mask_addr));
1636
1637         return true;
1638 }
1639
1640 static void hns3_nic_net_timeout(struct net_device *ndev)
1641 {
1642         struct hns3_nic_priv *priv = netdev_priv(ndev);
1643         struct hnae3_handle *h = priv->ae_handle;
1644
1645         if (!hns3_get_tx_timeo_queue_info(ndev))
1646                 return;
1647
1648         priv->tx_timeout_count++;
1649
1650         /* request the reset, and let the hclge to determine
1651          * which reset level should be done
1652          */
1653         if (h->ae_algo->ops->reset_event)
1654                 h->ae_algo->ops->reset_event(h->pdev, h);
1655 }
1656
1657 static const struct net_device_ops hns3_nic_netdev_ops = {
1658         .ndo_open               = hns3_nic_net_open,
1659         .ndo_stop               = hns3_nic_net_stop,
1660         .ndo_start_xmit         = hns3_nic_net_xmit,
1661         .ndo_tx_timeout         = hns3_nic_net_timeout,
1662         .ndo_set_mac_address    = hns3_nic_net_set_mac_address,
1663         .ndo_do_ioctl           = hns3_nic_do_ioctl,
1664         .ndo_change_mtu         = hns3_nic_change_mtu,
1665         .ndo_set_features       = hns3_nic_set_features,
1666         .ndo_get_stats64        = hns3_nic_get_stats64,
1667         .ndo_setup_tc           = hns3_nic_setup_tc,
1668         .ndo_set_rx_mode        = hns3_nic_set_rx_mode,
1669         .ndo_vlan_rx_add_vid    = hns3_vlan_rx_add_vid,
1670         .ndo_vlan_rx_kill_vid   = hns3_vlan_rx_kill_vid,
1671         .ndo_set_vf_vlan        = hns3_ndo_set_vf_vlan,
1672 };
1673
1674 static bool hns3_is_phys_func(struct pci_dev *pdev)
1675 {
1676         u32 dev_id = pdev->device;
1677
1678         switch (dev_id) {
1679         case HNAE3_DEV_ID_GE:
1680         case HNAE3_DEV_ID_25GE:
1681         case HNAE3_DEV_ID_25GE_RDMA:
1682         case HNAE3_DEV_ID_25GE_RDMA_MACSEC:
1683         case HNAE3_DEV_ID_50GE_RDMA:
1684         case HNAE3_DEV_ID_50GE_RDMA_MACSEC:
1685         case HNAE3_DEV_ID_100G_RDMA_MACSEC:
1686                 return true;
1687         case HNAE3_DEV_ID_100G_VF:
1688         case HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF:
1689                 return false;
1690         default:
1691                 dev_warn(&pdev->dev, "un-recognized pci device-id %d",
1692                          dev_id);
1693         }
1694
1695         return false;
1696 }
1697
1698 static void hns3_disable_sriov(struct pci_dev *pdev)
1699 {
1700         /* If our VFs are assigned we cannot shut down SR-IOV
1701          * without causing issues, so just leave the hardware
1702          * available but disabled
1703          */
1704         if (pci_vfs_assigned(pdev)) {
1705                 dev_warn(&pdev->dev,
1706                          "disabling driver while VFs are assigned\n");
1707                 return;
1708         }
1709
1710         pci_disable_sriov(pdev);
1711 }
1712
1713 static void hns3_get_dev_capability(struct pci_dev *pdev,
1714                                     struct hnae3_ae_dev *ae_dev)
1715 {
1716         if (pdev->revision >= 0x21) {
1717                 hnae3_set_bit(ae_dev->flag, HNAE3_DEV_SUPPORT_FD_B, 1);
1718                 hnae3_set_bit(ae_dev->flag, HNAE3_DEV_SUPPORT_GRO_B, 1);
1719         }
1720 }
1721
1722 /* hns3_probe - Device initialization routine
1723  * @pdev: PCI device information struct
1724  * @ent: entry in hns3_pci_tbl
1725  *
1726  * hns3_probe initializes a PF identified by a pci_dev structure.
1727  * The OS initialization, configuring of the PF private structure,
1728  * and a hardware reset occur.
1729  *
1730  * Returns 0 on success, negative on failure
1731  */
1732 static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1733 {
1734         struct hnae3_ae_dev *ae_dev;
1735         int ret;
1736
1737         ae_dev = devm_kzalloc(&pdev->dev, sizeof(*ae_dev),
1738                               GFP_KERNEL);
1739         if (!ae_dev) {
1740                 ret = -ENOMEM;
1741                 return ret;
1742         }
1743
1744         ae_dev->pdev = pdev;
1745         ae_dev->flag = ent->driver_data;
1746         ae_dev->dev_type = HNAE3_DEV_KNIC;
1747         ae_dev->reset_type = HNAE3_NONE_RESET;
1748         hns3_get_dev_capability(pdev, ae_dev);
1749         pci_set_drvdata(pdev, ae_dev);
1750
1751         hnae3_register_ae_dev(ae_dev);
1752
1753         return 0;
1754 }
1755
1756 /* hns3_remove - Device removal routine
1757  * @pdev: PCI device information struct
1758  */
1759 static void hns3_remove(struct pci_dev *pdev)
1760 {
1761         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1762
1763         if (hns3_is_phys_func(pdev) && IS_ENABLED(CONFIG_PCI_IOV))
1764                 hns3_disable_sriov(pdev);
1765
1766         hnae3_unregister_ae_dev(ae_dev);
1767 }
1768
1769 /**
1770  * hns3_pci_sriov_configure
1771  * @pdev: pointer to a pci_dev structure
1772  * @num_vfs: number of VFs to allocate
1773  *
1774  * Enable or change the number of VFs. Called when the user updates the number
1775  * of VFs in sysfs.
1776  **/
1777 static int hns3_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1778 {
1779         int ret;
1780
1781         if (!(hns3_is_phys_func(pdev) && IS_ENABLED(CONFIG_PCI_IOV))) {
1782                 dev_warn(&pdev->dev, "Can not config SRIOV\n");
1783                 return -EINVAL;
1784         }
1785
1786         if (num_vfs) {
1787                 ret = pci_enable_sriov(pdev, num_vfs);
1788                 if (ret)
1789                         dev_err(&pdev->dev, "SRIOV enable failed %d\n", ret);
1790                 else
1791                         return num_vfs;
1792         } else if (!pci_vfs_assigned(pdev)) {
1793                 pci_disable_sriov(pdev);
1794         } else {
1795                 dev_warn(&pdev->dev,
1796                          "Unable to free VFs because some are assigned to VMs.\n");
1797         }
1798
1799         return 0;
1800 }
1801
1802 static void hns3_shutdown(struct pci_dev *pdev)
1803 {
1804         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1805
1806         hnae3_unregister_ae_dev(ae_dev);
1807         devm_kfree(&pdev->dev, ae_dev);
1808         pci_set_drvdata(pdev, NULL);
1809
1810         if (system_state == SYSTEM_POWER_OFF)
1811                 pci_set_power_state(pdev, PCI_D3hot);
1812 }
1813
1814 static pci_ers_result_t hns3_error_detected(struct pci_dev *pdev,
1815                                             pci_channel_state_t state)
1816 {
1817         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1818         pci_ers_result_t ret;
1819
1820         dev_info(&pdev->dev, "PCI error detected, state(=%d)!!\n", state);
1821
1822         if (state == pci_channel_io_perm_failure)
1823                 return PCI_ERS_RESULT_DISCONNECT;
1824
1825         if (!ae_dev) {
1826                 dev_err(&pdev->dev,
1827                         "Can't recover - error happened during device init\n");
1828                 return PCI_ERS_RESULT_NONE;
1829         }
1830
1831         if (ae_dev->ops->handle_hw_ras_error)
1832                 ret = ae_dev->ops->handle_hw_ras_error(ae_dev);
1833         else
1834                 return PCI_ERS_RESULT_NONE;
1835
1836         return ret;
1837 }
1838
1839 static pci_ers_result_t hns3_slot_reset(struct pci_dev *pdev)
1840 {
1841         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1842         struct device *dev = &pdev->dev;
1843
1844         dev_info(dev, "requesting reset due to PCI error\n");
1845
1846         /* request the reset */
1847         if (ae_dev->ops->reset_event) {
1848                 ae_dev->ops->reset_event(pdev, NULL);
1849                 return PCI_ERS_RESULT_RECOVERED;
1850         }
1851
1852         return PCI_ERS_RESULT_DISCONNECT;
1853 }
1854
1855 static void hns3_reset_prepare(struct pci_dev *pdev)
1856 {
1857         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1858
1859         dev_info(&pdev->dev, "hns3 flr prepare\n");
1860         if (ae_dev && ae_dev->ops && ae_dev->ops->flr_prepare)
1861                 ae_dev->ops->flr_prepare(ae_dev);
1862 }
1863
1864 static void hns3_reset_done(struct pci_dev *pdev)
1865 {
1866         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1867
1868         dev_info(&pdev->dev, "hns3 flr done\n");
1869         if (ae_dev && ae_dev->ops && ae_dev->ops->flr_done)
1870                 ae_dev->ops->flr_done(ae_dev);
1871 }
1872
1873 static const struct pci_error_handlers hns3_err_handler = {
1874         .error_detected = hns3_error_detected,
1875         .slot_reset     = hns3_slot_reset,
1876         .reset_prepare  = hns3_reset_prepare,
1877         .reset_done     = hns3_reset_done,
1878 };
1879
1880 static struct pci_driver hns3_driver = {
1881         .name     = hns3_driver_name,
1882         .id_table = hns3_pci_tbl,
1883         .probe    = hns3_probe,
1884         .remove   = hns3_remove,
1885         .shutdown = hns3_shutdown,
1886         .sriov_configure = hns3_pci_sriov_configure,
1887         .err_handler    = &hns3_err_handler,
1888 };
1889
1890 /* set default feature to hns3 */
1891 static void hns3_set_default_feature(struct net_device *netdev)
1892 {
1893         struct hnae3_handle *h = hns3_get_handle(netdev);
1894         struct pci_dev *pdev = h->pdev;
1895
1896         netdev->priv_flags |= IFF_UNICAST_FLT;
1897
1898         netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1899                 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1900                 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1901                 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1902                 NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC;
1903
1904         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
1905
1906         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
1907
1908         netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1909                 NETIF_F_HW_VLAN_CTAG_FILTER |
1910                 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
1911                 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1912                 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1913                 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1914                 NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC;
1915
1916         netdev->vlan_features |=
1917                 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
1918                 NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO |
1919                 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1920                 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1921                 NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC;
1922
1923         netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1924                 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
1925                 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1926                 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1927                 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1928                 NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC;
1929
1930         if (pdev->revision >= 0x21) {
1931                 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1932                         NETIF_F_GRO_HW;
1933                 netdev->features |= NETIF_F_GRO_HW;
1934
1935                 if (!(h->flags & HNAE3_SUPPORT_VF)) {
1936                         netdev->hw_features |= NETIF_F_NTUPLE;
1937                         netdev->features |= NETIF_F_NTUPLE;
1938                 }
1939         }
1940 }
1941
1942 static int hns3_alloc_buffer(struct hns3_enet_ring *ring,
1943                              struct hns3_desc_cb *cb)
1944 {
1945         unsigned int order = hnae3_page_order(ring);
1946         struct page *p;
1947
1948         p = dev_alloc_pages(order);
1949         if (!p)
1950                 return -ENOMEM;
1951
1952         cb->priv = p;
1953         cb->page_offset = 0;
1954         cb->reuse_flag = 0;
1955         cb->buf  = page_address(p);
1956         cb->length = hnae3_page_size(ring);
1957         cb->type = DESC_TYPE_PAGE;
1958
1959         return 0;
1960 }
1961
1962 static void hns3_free_buffer(struct hns3_enet_ring *ring,
1963                              struct hns3_desc_cb *cb)
1964 {
1965         if (cb->type == DESC_TYPE_SKB)
1966                 dev_kfree_skb_any((struct sk_buff *)cb->priv);
1967         else if (!HNAE3_IS_TX_RING(ring))
1968                 put_page((struct page *)cb->priv);
1969         memset(cb, 0, sizeof(*cb));
1970 }
1971
1972 static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb)
1973 {
1974         cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0,
1975                                cb->length, ring_to_dma_dir(ring));
1976
1977         if (unlikely(dma_mapping_error(ring_to_dev(ring), cb->dma)))
1978                 return -EIO;
1979
1980         return 0;
1981 }
1982
1983 static void hns3_unmap_buffer(struct hns3_enet_ring *ring,
1984                               struct hns3_desc_cb *cb)
1985 {
1986         if (cb->type == DESC_TYPE_SKB)
1987                 dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length,
1988                                  ring_to_dma_dir(ring));
1989         else if (cb->length)
1990                 dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length,
1991                                ring_to_dma_dir(ring));
1992 }
1993
1994 static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i)
1995 {
1996         hns3_unmap_buffer(ring, &ring->desc_cb[i]);
1997         ring->desc[i].addr = 0;
1998 }
1999
2000 static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i)
2001 {
2002         struct hns3_desc_cb *cb = &ring->desc_cb[i];
2003
2004         if (!ring->desc_cb[i].dma)
2005                 return;
2006
2007         hns3_buffer_detach(ring, i);
2008         hns3_free_buffer(ring, cb);
2009 }
2010
2011 static void hns3_free_buffers(struct hns3_enet_ring *ring)
2012 {
2013         int i;
2014
2015         for (i = 0; i < ring->desc_num; i++)
2016                 hns3_free_buffer_detach(ring, i);
2017 }
2018
2019 /* free desc along with its attached buffer */
2020 static void hns3_free_desc(struct hns3_enet_ring *ring)
2021 {
2022         int size = ring->desc_num * sizeof(ring->desc[0]);
2023
2024         hns3_free_buffers(ring);
2025
2026         if (ring->desc) {
2027                 dma_free_coherent(ring_to_dev(ring), size,
2028                                   ring->desc, ring->desc_dma_addr);
2029                 ring->desc = NULL;
2030         }
2031 }
2032
2033 static int hns3_alloc_desc(struct hns3_enet_ring *ring)
2034 {
2035         int size = ring->desc_num * sizeof(ring->desc[0]);
2036
2037         ring->desc = dma_zalloc_coherent(ring_to_dev(ring), size,
2038                                          &ring->desc_dma_addr,
2039                                          GFP_KERNEL);
2040         if (!ring->desc)
2041                 return -ENOMEM;
2042
2043         return 0;
2044 }
2045
2046 static int hns3_reserve_buffer_map(struct hns3_enet_ring *ring,
2047                                    struct hns3_desc_cb *cb)
2048 {
2049         int ret;
2050
2051         ret = hns3_alloc_buffer(ring, cb);
2052         if (ret)
2053                 goto out;
2054
2055         ret = hns3_map_buffer(ring, cb);
2056         if (ret)
2057                 goto out_with_buf;
2058
2059         return 0;
2060
2061 out_with_buf:
2062         hns3_free_buffer(ring, cb);
2063 out:
2064         return ret;
2065 }
2066
2067 static int hns3_alloc_buffer_attach(struct hns3_enet_ring *ring, int i)
2068 {
2069         int ret = hns3_reserve_buffer_map(ring, &ring->desc_cb[i]);
2070
2071         if (ret)
2072                 return ret;
2073
2074         ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
2075
2076         return 0;
2077 }
2078
2079 /* Allocate memory for raw pkg, and map with dma */
2080 static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring)
2081 {
2082         int i, j, ret;
2083
2084         for (i = 0; i < ring->desc_num; i++) {
2085                 ret = hns3_alloc_buffer_attach(ring, i);
2086                 if (ret)
2087                         goto out_buffer_fail;
2088         }
2089
2090         return 0;
2091
2092 out_buffer_fail:
2093         for (j = i - 1; j >= 0; j--)
2094                 hns3_free_buffer_detach(ring, j);
2095         return ret;
2096 }
2097
2098 /* detach a in-used buffer and replace with a reserved one  */
2099 static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
2100                                 struct hns3_desc_cb *res_cb)
2101 {
2102         hns3_unmap_buffer(ring, &ring->desc_cb[i]);
2103         ring->desc_cb[i] = *res_cb;
2104         ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
2105         ring->desc[i].rx.bd_base_info = 0;
2106 }
2107
2108 static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i)
2109 {
2110         ring->desc_cb[i].reuse_flag = 0;
2111         ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma
2112                 + ring->desc_cb[i].page_offset);
2113         ring->desc[i].rx.bd_base_info = 0;
2114 }
2115
2116 static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes,
2117                                       int *pkts)
2118 {
2119         struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
2120
2121         (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
2122         (*bytes) += desc_cb->length;
2123         /* desc_cb will be cleaned, after hnae3_free_buffer_detach*/
2124         hns3_free_buffer_detach(ring, ring->next_to_clean);
2125
2126         ring_ptr_move_fw(ring, next_to_clean);
2127 }
2128
2129 static int is_valid_clean_head(struct hns3_enet_ring *ring, int h)
2130 {
2131         int u = ring->next_to_use;
2132         int c = ring->next_to_clean;
2133
2134         if (unlikely(h > ring->desc_num))
2135                 return 0;
2136
2137         return u > c ? (h > c && h <= u) : (h > c || h <= u);
2138 }
2139
2140 void hns3_clean_tx_ring(struct hns3_enet_ring *ring)
2141 {
2142         struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
2143         struct hns3_nic_priv *priv = netdev_priv(netdev);
2144         struct netdev_queue *dev_queue;
2145         int bytes, pkts;
2146         int head;
2147
2148         head = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_HEAD_REG);
2149         rmb(); /* Make sure head is ready before touch any data */
2150
2151         if (is_ring_empty(ring) || head == ring->next_to_clean)
2152                 return; /* no data to poll */
2153
2154         if (unlikely(!is_valid_clean_head(ring, head))) {
2155                 netdev_err(netdev, "wrong head (%d, %d-%d)\n", head,
2156                            ring->next_to_use, ring->next_to_clean);
2157
2158                 u64_stats_update_begin(&ring->syncp);
2159                 ring->stats.io_err_cnt++;
2160                 u64_stats_update_end(&ring->syncp);
2161                 return;
2162         }
2163
2164         bytes = 0;
2165         pkts = 0;
2166         while (head != ring->next_to_clean) {
2167                 hns3_nic_reclaim_one_desc(ring, &bytes, &pkts);
2168                 /* Issue prefetch for next Tx descriptor */
2169                 prefetch(&ring->desc_cb[ring->next_to_clean]);
2170         }
2171
2172         ring->tqp_vector->tx_group.total_bytes += bytes;
2173         ring->tqp_vector->tx_group.total_packets += pkts;
2174
2175         u64_stats_update_begin(&ring->syncp);
2176         ring->stats.tx_bytes += bytes;
2177         ring->stats.tx_pkts += pkts;
2178         u64_stats_update_end(&ring->syncp);
2179
2180         dev_queue = netdev_get_tx_queue(netdev, ring->tqp->tqp_index);
2181         netdev_tx_completed_queue(dev_queue, pkts, bytes);
2182
2183         if (unlikely(pkts && netif_carrier_ok(netdev) &&
2184                      (ring_space(ring) > HNS3_MAX_BD_PER_PKT))) {
2185                 /* Make sure that anybody stopping the queue after this
2186                  * sees the new next_to_clean.
2187                  */
2188                 smp_mb();
2189                 if (netif_tx_queue_stopped(dev_queue) &&
2190                     !test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) {
2191                         netif_tx_wake_queue(dev_queue);
2192                         ring->stats.restart_queue++;
2193                 }
2194         }
2195 }
2196
2197 static int hns3_desc_unused(struct hns3_enet_ring *ring)
2198 {
2199         int ntc = ring->next_to_clean;
2200         int ntu = ring->next_to_use;
2201
2202         return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
2203 }
2204
2205 static void
2206 hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count)
2207 {
2208         struct hns3_desc_cb *desc_cb;
2209         struct hns3_desc_cb res_cbs;
2210         int i, ret;
2211
2212         for (i = 0; i < cleand_count; i++) {
2213                 desc_cb = &ring->desc_cb[ring->next_to_use];
2214                 if (desc_cb->reuse_flag) {
2215                         u64_stats_update_begin(&ring->syncp);
2216                         ring->stats.reuse_pg_cnt++;
2217                         u64_stats_update_end(&ring->syncp);
2218
2219                         hns3_reuse_buffer(ring, ring->next_to_use);
2220                 } else {
2221                         ret = hns3_reserve_buffer_map(ring, &res_cbs);
2222                         if (ret) {
2223                                 u64_stats_update_begin(&ring->syncp);
2224                                 ring->stats.sw_err_cnt++;
2225                                 u64_stats_update_end(&ring->syncp);
2226
2227                                 netdev_err(ring->tqp->handle->kinfo.netdev,
2228                                            "hnae reserve buffer map failed.\n");
2229                                 break;
2230                         }
2231                         hns3_replace_buffer(ring, ring->next_to_use, &res_cbs);
2232                 }
2233
2234                 ring_ptr_move_fw(ring, next_to_use);
2235         }
2236
2237         wmb(); /* Make all data has been write before submit */
2238         writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
2239 }
2240
2241 static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
2242                                 struct hns3_enet_ring *ring, int pull_len,
2243                                 struct hns3_desc_cb *desc_cb)
2244 {
2245         struct hns3_desc *desc;
2246         u32 truesize;
2247         int size;
2248         int last_offset;
2249         bool twobufs;
2250
2251         twobufs = ((PAGE_SIZE < 8192) &&
2252                 hnae3_buf_size(ring) == HNS3_BUFFER_SIZE_2048);
2253
2254         desc = &ring->desc[ring->next_to_clean];
2255         size = le16_to_cpu(desc->rx.size);
2256
2257         truesize = hnae3_buf_size(ring);
2258
2259         if (!twobufs)
2260                 last_offset = hnae3_page_size(ring) - hnae3_buf_size(ring);
2261
2262         skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
2263                         size - pull_len, truesize);
2264
2265          /* Avoid re-using remote pages,flag default unreuse */
2266         if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
2267                 return;
2268
2269         if (twobufs) {
2270                 /* If we are only owner of page we can reuse it */
2271                 if (likely(page_count(desc_cb->priv) == 1)) {
2272                         /* Flip page offset to other buffer */
2273                         desc_cb->page_offset ^= truesize;
2274
2275                         desc_cb->reuse_flag = 1;
2276                         /* bump ref count on page before it is given*/
2277                         get_page(desc_cb->priv);
2278                 }
2279                 return;
2280         }
2281
2282         /* Move offset up to the next cache line */
2283         desc_cb->page_offset += truesize;
2284
2285         if (desc_cb->page_offset <= last_offset) {
2286                 desc_cb->reuse_flag = 1;
2287                 /* Bump ref count on page before it is given*/
2288                 get_page(desc_cb->priv);
2289         }
2290 }
2291
2292 static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
2293                              struct hns3_desc *desc)
2294 {
2295         struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
2296         int l3_type, l4_type;
2297         u32 bd_base_info;
2298         int ol4_type;
2299         u32 l234info;
2300
2301         bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
2302         l234info = le32_to_cpu(desc->rx.l234_info);
2303
2304         skb->ip_summed = CHECKSUM_NONE;
2305
2306         skb_checksum_none_assert(skb);
2307
2308         if (!(netdev->features & NETIF_F_RXCSUM))
2309                 return;
2310
2311         /* We MUST enable hardware checksum before enabling hardware GRO */
2312         if (skb_shinfo(skb)->gso_size) {
2313                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2314                 return;
2315         }
2316
2317         /* check if hardware has done checksum */
2318         if (!hnae3_get_bit(bd_base_info, HNS3_RXD_L3L4P_B))
2319                 return;
2320
2321         if (unlikely(hnae3_get_bit(l234info, HNS3_RXD_L3E_B) ||
2322                      hnae3_get_bit(l234info, HNS3_RXD_L4E_B) ||
2323                      hnae3_get_bit(l234info, HNS3_RXD_OL3E_B) ||
2324                      hnae3_get_bit(l234info, HNS3_RXD_OL4E_B))) {
2325                 u64_stats_update_begin(&ring->syncp);
2326                 ring->stats.l3l4_csum_err++;
2327                 u64_stats_update_end(&ring->syncp);
2328
2329                 return;
2330         }
2331
2332         l3_type = hnae3_get_field(l234info, HNS3_RXD_L3ID_M,
2333                                   HNS3_RXD_L3ID_S);
2334         l4_type = hnae3_get_field(l234info, HNS3_RXD_L4ID_M,
2335                                   HNS3_RXD_L4ID_S);
2336
2337         ol4_type = hnae3_get_field(l234info, HNS3_RXD_OL4ID_M,
2338                                    HNS3_RXD_OL4ID_S);
2339         switch (ol4_type) {
2340         case HNS3_OL4_TYPE_MAC_IN_UDP:
2341         case HNS3_OL4_TYPE_NVGRE:
2342                 skb->csum_level = 1;
2343                 /* fall through */
2344         case HNS3_OL4_TYPE_NO_TUN:
2345                 /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */
2346                 if ((l3_type == HNS3_L3_TYPE_IPV4 ||
2347                      l3_type == HNS3_L3_TYPE_IPV6) &&
2348                     (l4_type == HNS3_L4_TYPE_UDP ||
2349                      l4_type == HNS3_L4_TYPE_TCP ||
2350                      l4_type == HNS3_L4_TYPE_SCTP))
2351                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2352                 break;
2353         default:
2354                 break;
2355         }
2356 }
2357
2358 static void hns3_rx_skb(struct hns3_enet_ring *ring, struct sk_buff *skb)
2359 {
2360         if (skb_has_frag_list(skb))
2361                 napi_gro_flush(&ring->tqp_vector->napi, false);
2362
2363         napi_gro_receive(&ring->tqp_vector->napi, skb);
2364 }
2365
2366 static bool hns3_parse_vlan_tag(struct hns3_enet_ring *ring,
2367                                 struct hns3_desc *desc, u32 l234info,
2368                                 u16 *vlan_tag)
2369 {
2370         struct pci_dev *pdev = ring->tqp->handle->pdev;
2371
2372         if (pdev->revision == 0x20) {
2373                 *vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag);
2374                 if (!(*vlan_tag & VLAN_VID_MASK))
2375                         *vlan_tag = le16_to_cpu(desc->rx.vlan_tag);
2376
2377                 return (*vlan_tag != 0);
2378         }
2379
2380 #define HNS3_STRP_OUTER_VLAN    0x1
2381 #define HNS3_STRP_INNER_VLAN    0x2
2382
2383         switch (hnae3_get_field(l234info, HNS3_RXD_STRP_TAGP_M,
2384                                 HNS3_RXD_STRP_TAGP_S)) {
2385         case HNS3_STRP_OUTER_VLAN:
2386                 *vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag);
2387                 return true;
2388         case HNS3_STRP_INNER_VLAN:
2389                 *vlan_tag = le16_to_cpu(desc->rx.vlan_tag);
2390                 return true;
2391         default:
2392                 return false;
2393         }
2394 }
2395
2396 static int hns3_alloc_skb(struct hns3_enet_ring *ring, int length,
2397                           unsigned char *va)
2398 {
2399 #define HNS3_NEED_ADD_FRAG      1
2400         struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
2401         struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
2402         struct sk_buff *skb;
2403
2404         ring->skb = napi_alloc_skb(&ring->tqp_vector->napi, HNS3_RX_HEAD_SIZE);
2405         skb = ring->skb;
2406         if (unlikely(!skb)) {
2407                 netdev_err(netdev, "alloc rx skb fail\n");
2408
2409                 u64_stats_update_begin(&ring->syncp);
2410                 ring->stats.sw_err_cnt++;
2411                 u64_stats_update_end(&ring->syncp);
2412
2413                 return -ENOMEM;
2414         }
2415
2416         prefetchw(skb->data);
2417
2418         ring->pending_buf = 1;
2419         ring->frag_num = 0;
2420         ring->tail_skb = NULL;
2421         if (length <= HNS3_RX_HEAD_SIZE) {
2422                 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
2423
2424                 /* We can reuse buffer as-is, just make sure it is local */
2425                 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
2426                         desc_cb->reuse_flag = 1;
2427                 else /* This page cannot be reused so discard it */
2428                         put_page(desc_cb->priv);
2429
2430                 ring_ptr_move_fw(ring, next_to_clean);
2431                 return 0;
2432         }
2433         u64_stats_update_begin(&ring->syncp);
2434         ring->stats.seg_pkt_cnt++;
2435         u64_stats_update_end(&ring->syncp);
2436
2437         ring->pull_len = eth_get_headlen(va, HNS3_RX_HEAD_SIZE);
2438         __skb_put(skb, ring->pull_len);
2439         hns3_nic_reuse_page(skb, ring->frag_num++, ring, ring->pull_len,
2440                             desc_cb);
2441         ring_ptr_move_fw(ring, next_to_clean);
2442
2443         return HNS3_NEED_ADD_FRAG;
2444 }
2445
2446 static int hns3_add_frag(struct hns3_enet_ring *ring, struct hns3_desc *desc,
2447                          struct sk_buff **out_skb, bool pending)
2448 {
2449         struct sk_buff *skb = *out_skb;
2450         struct sk_buff *head_skb = *out_skb;
2451         struct sk_buff *new_skb;
2452         struct hns3_desc_cb *desc_cb;
2453         struct hns3_desc *pre_desc;
2454         u32 bd_base_info;
2455         int pre_bd;
2456
2457         /* if there is pending bd, the SW param next_to_clean has moved
2458          * to next and the next is NULL
2459          */
2460         if (pending) {
2461                 pre_bd = (ring->next_to_clean - 1 + ring->desc_num) %
2462                         ring->desc_num;
2463                 pre_desc = &ring->desc[pre_bd];
2464                 bd_base_info = le32_to_cpu(pre_desc->rx.bd_base_info);
2465         } else {
2466                 bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
2467         }
2468
2469         while (!hnae3_get_bit(bd_base_info, HNS3_RXD_FE_B)) {
2470                 desc = &ring->desc[ring->next_to_clean];
2471                 desc_cb = &ring->desc_cb[ring->next_to_clean];
2472                 bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
2473                 if (!hnae3_get_bit(bd_base_info, HNS3_RXD_VLD_B))
2474                         return -ENXIO;
2475
2476                 if (unlikely(ring->frag_num >= MAX_SKB_FRAGS)) {
2477                         new_skb = napi_alloc_skb(&ring->tqp_vector->napi,
2478                                                  HNS3_RX_HEAD_SIZE);
2479                         if (unlikely(!new_skb)) {
2480                                 netdev_err(ring->tqp->handle->kinfo.netdev,
2481                                            "alloc rx skb frag fail\n");
2482                                 return -ENXIO;
2483                         }
2484                         ring->frag_num = 0;
2485
2486                         if (ring->tail_skb) {
2487                                 ring->tail_skb->next = new_skb;
2488                                 ring->tail_skb = new_skb;
2489                         } else {
2490                                 skb_shinfo(skb)->frag_list = new_skb;
2491                                 ring->tail_skb = new_skb;
2492                         }
2493                 }
2494
2495                 if (ring->tail_skb) {
2496                         head_skb->truesize += hnae3_buf_size(ring);
2497                         head_skb->data_len += le16_to_cpu(desc->rx.size);
2498                         head_skb->len += le16_to_cpu(desc->rx.size);
2499                         skb = ring->tail_skb;
2500                 }
2501
2502                 hns3_nic_reuse_page(skb, ring->frag_num++, ring, 0, desc_cb);
2503                 ring_ptr_move_fw(ring, next_to_clean);
2504                 ring->pending_buf++;
2505         }
2506
2507         return 0;
2508 }
2509
2510 static void hns3_set_gro_param(struct sk_buff *skb, u32 l234info,
2511                                u32 bd_base_info)
2512 {
2513         u16 gro_count;
2514         u32 l3_type;
2515
2516         gro_count = hnae3_get_field(l234info, HNS3_RXD_GRO_COUNT_M,
2517                                     HNS3_RXD_GRO_COUNT_S);
2518         /* if there is no HW GRO, do not set gro params */
2519         if (!gro_count)
2520                 return;
2521
2522         /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
2523          * to skb_shinfo(skb)->gso_segs
2524          */
2525         NAPI_GRO_CB(skb)->count = gro_count;
2526
2527         l3_type = hnae3_get_field(l234info, HNS3_RXD_L3ID_M,
2528                                   HNS3_RXD_L3ID_S);
2529         if (l3_type == HNS3_L3_TYPE_IPV4)
2530                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
2531         else if (l3_type == HNS3_L3_TYPE_IPV6)
2532                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
2533         else
2534                 return;
2535
2536         skb_shinfo(skb)->gso_size = hnae3_get_field(bd_base_info,
2537                                                     HNS3_RXD_GRO_SIZE_M,
2538                                                     HNS3_RXD_GRO_SIZE_S);
2539         if (skb_shinfo(skb)->gso_size)
2540                 tcp_gro_complete(skb);
2541 }
2542
2543 static void hns3_set_rx_skb_rss_type(struct hns3_enet_ring *ring,
2544                                      struct sk_buff *skb)
2545 {
2546         struct hns3_desc *desc = &ring->desc[ring->next_to_clean];
2547         struct hnae3_handle *handle = ring->tqp->handle;
2548         enum pkt_hash_types rss_type;
2549
2550         if (le32_to_cpu(desc->rx.rss_hash))
2551                 rss_type = handle->kinfo.rss_type;
2552         else
2553                 rss_type = PKT_HASH_TYPE_NONE;
2554
2555         skb_set_hash(skb, le32_to_cpu(desc->rx.rss_hash), rss_type);
2556 }
2557
2558 static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
2559                              struct sk_buff **out_skb)
2560 {
2561         struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
2562         struct sk_buff *skb = ring->skb;
2563         struct hns3_desc_cb *desc_cb;
2564         struct hns3_desc *desc;
2565         u32 bd_base_info;
2566         u32 l234info;
2567         int length;
2568         int ret;
2569
2570         desc = &ring->desc[ring->next_to_clean];
2571         desc_cb = &ring->desc_cb[ring->next_to_clean];
2572
2573         prefetch(desc);
2574
2575         length = le16_to_cpu(desc->rx.size);
2576         bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
2577
2578         /* Check valid BD */
2579         if (unlikely(!hnae3_get_bit(bd_base_info, HNS3_RXD_VLD_B)))
2580                 return -ENXIO;
2581
2582         if (!skb)
2583                 ring->va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
2584
2585         /* Prefetch first cache line of first page
2586          * Idea is to cache few bytes of the header of the packet. Our L1 Cache
2587          * line size is 64B so need to prefetch twice to make it 128B. But in
2588          * actual we can have greater size of caches with 128B Level 1 cache
2589          * lines. In such a case, single fetch would suffice to cache in the
2590          * relevant part of the header.
2591          */
2592         prefetch(ring->va);
2593 #if L1_CACHE_BYTES < 128
2594         prefetch(ring->va + L1_CACHE_BYTES);
2595 #endif
2596
2597         if (!skb) {
2598                 ret = hns3_alloc_skb(ring, length, ring->va);
2599                 *out_skb = skb = ring->skb;
2600
2601                 if (ret < 0) /* alloc buffer fail */
2602                         return ret;
2603                 if (ret > 0) { /* need add frag */
2604                         ret = hns3_add_frag(ring, desc, &skb, false);
2605                         if (ret)
2606                                 return ret;
2607
2608                         /* As the head data may be changed when GRO enable, copy
2609                          * the head data in after other data rx completed
2610                          */
2611                         memcpy(skb->data, ring->va,
2612                                ALIGN(ring->pull_len, sizeof(long)));
2613                 }
2614         } else {
2615                 ret = hns3_add_frag(ring, desc, &skb, true);
2616                 if (ret)
2617                         return ret;
2618
2619                 /* As the head data may be changed when GRO enable, copy
2620                  * the head data in after other data rx completed
2621                  */
2622                 memcpy(skb->data, ring->va,
2623                        ALIGN(ring->pull_len, sizeof(long)));
2624         }
2625
2626         l234info = le32_to_cpu(desc->rx.l234_info);
2627         bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
2628
2629         /* Based on hw strategy, the tag offloaded will be stored at
2630          * ot_vlan_tag in two layer tag case, and stored at vlan_tag
2631          * in one layer tag case.
2632          */
2633         if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
2634                 u16 vlan_tag;
2635
2636                 if (hns3_parse_vlan_tag(ring, desc, l234info, &vlan_tag))
2637                         __vlan_hwaccel_put_tag(skb,
2638                                                htons(ETH_P_8021Q),
2639                                                vlan_tag);
2640         }
2641
2642         if (unlikely(!hnae3_get_bit(bd_base_info, HNS3_RXD_VLD_B))) {
2643                 u64_stats_update_begin(&ring->syncp);
2644                 ring->stats.non_vld_descs++;
2645                 u64_stats_update_end(&ring->syncp);
2646
2647                 dev_kfree_skb_any(skb);
2648                 return -EINVAL;
2649         }
2650
2651         if (unlikely((!desc->rx.pkt_len) ||
2652                      hnae3_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) {
2653                 u64_stats_update_begin(&ring->syncp);
2654                 ring->stats.err_pkt_len++;
2655                 u64_stats_update_end(&ring->syncp);
2656
2657                 dev_kfree_skb_any(skb);
2658                 return -EFAULT;
2659         }
2660
2661         if (unlikely(hnae3_get_bit(l234info, HNS3_RXD_L2E_B))) {
2662                 u64_stats_update_begin(&ring->syncp);
2663                 ring->stats.l2_err++;
2664                 u64_stats_update_end(&ring->syncp);
2665
2666                 dev_kfree_skb_any(skb);
2667                 return -EFAULT;
2668         }
2669
2670         u64_stats_update_begin(&ring->syncp);
2671         ring->stats.rx_pkts++;
2672         ring->stats.rx_bytes += skb->len;
2673         u64_stats_update_end(&ring->syncp);
2674
2675         ring->tqp_vector->rx_group.total_bytes += skb->len;
2676
2677         /* This is needed in order to enable forwarding support */
2678         hns3_set_gro_param(skb, l234info, bd_base_info);
2679
2680         hns3_rx_checksum(ring, skb, desc);
2681         *out_skb = skb;
2682         hns3_set_rx_skb_rss_type(ring, skb);
2683
2684         return 0;
2685 }
2686
2687 int hns3_clean_rx_ring(
2688                 struct hns3_enet_ring *ring, int budget,
2689                 void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *))
2690 {
2691 #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
2692         struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
2693         int recv_pkts, recv_bds, clean_count, err;
2694         int unused_count = hns3_desc_unused(ring) - ring->pending_buf;
2695         struct sk_buff *skb = ring->skb;
2696         int num;
2697
2698         num = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_FBDNUM_REG);
2699         rmb(); /* Make sure num taken effect before the other data is touched */
2700
2701         recv_pkts = 0, recv_bds = 0, clean_count = 0;
2702         num -= unused_count;
2703
2704         while (recv_pkts < budget && recv_bds < num) {
2705                 /* Reuse or realloc buffers */
2706                 if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
2707                         hns3_nic_alloc_rx_buffers(ring,
2708                                                   clean_count + unused_count);
2709                         clean_count = 0;
2710                         unused_count = hns3_desc_unused(ring) -
2711                                         ring->pending_buf;
2712                 }
2713
2714                 /* Poll one pkt */
2715                 err = hns3_handle_rx_bd(ring, &skb);
2716                 if (unlikely(!skb)) /* This fault cannot be repaired */
2717                         goto out;
2718
2719                 if (err == -ENXIO) { /* Do not get FE for the packet */
2720                         goto out;
2721                 } else if (unlikely(err)) {  /* Do jump the err */
2722                         recv_bds += ring->pending_buf;
2723                         clean_count += ring->pending_buf;
2724                         ring->skb = NULL;
2725                         ring->pending_buf = 0;
2726                         continue;
2727                 }
2728
2729                 /* Do update ip stack process */
2730                 skb->protocol = eth_type_trans(skb, netdev);
2731                 rx_fn(ring, skb);
2732                 recv_bds += ring->pending_buf;
2733                 clean_count += ring->pending_buf;
2734                 ring->skb = NULL;
2735                 ring->pending_buf = 0;
2736
2737                 recv_pkts++;
2738         }
2739
2740 out:
2741         /* Make all data has been write before submit */
2742         if (clean_count + unused_count > 0)
2743                 hns3_nic_alloc_rx_buffers(ring,
2744                                           clean_count + unused_count);
2745
2746         return recv_pkts;
2747 }
2748
2749 static bool hns3_get_new_int_gl(struct hns3_enet_ring_group *ring_group)
2750 {
2751         struct hns3_enet_tqp_vector *tqp_vector =
2752                                         ring_group->ring->tqp_vector;
2753         enum hns3_flow_level_range new_flow_level;
2754         int packets_per_msecs;
2755         int bytes_per_msecs;
2756         u32 time_passed_ms;
2757         u16 new_int_gl;
2758
2759         if (!ring_group->coal.int_gl || !tqp_vector->last_jiffies)
2760                 return false;
2761
2762         if (ring_group->total_packets == 0) {
2763                 ring_group->coal.int_gl = HNS3_INT_GL_50K;
2764                 ring_group->coal.flow_level = HNS3_FLOW_LOW;
2765                 return true;
2766         }
2767
2768         /* Simple throttlerate management
2769          * 0-10MB/s   lower     (50000 ints/s)
2770          * 10-20MB/s   middle    (20000 ints/s)
2771          * 20-1249MB/s high      (18000 ints/s)
2772          * > 40000pps  ultra     (8000 ints/s)
2773          */
2774         new_flow_level = ring_group->coal.flow_level;
2775         new_int_gl = ring_group->coal.int_gl;
2776         time_passed_ms =
2777                 jiffies_to_msecs(jiffies - tqp_vector->last_jiffies);
2778
2779         if (!time_passed_ms)
2780                 return false;
2781
2782         do_div(ring_group->total_packets, time_passed_ms);
2783         packets_per_msecs = ring_group->total_packets;
2784
2785         do_div(ring_group->total_bytes, time_passed_ms);
2786         bytes_per_msecs = ring_group->total_bytes;
2787
2788 #define HNS3_RX_LOW_BYTE_RATE 10000
2789 #define HNS3_RX_MID_BYTE_RATE 20000
2790
2791         switch (new_flow_level) {
2792         case HNS3_FLOW_LOW:
2793                 if (bytes_per_msecs > HNS3_RX_LOW_BYTE_RATE)
2794                         new_flow_level = HNS3_FLOW_MID;
2795                 break;
2796         case HNS3_FLOW_MID:
2797                 if (bytes_per_msecs > HNS3_RX_MID_BYTE_RATE)
2798                         new_flow_level = HNS3_FLOW_HIGH;
2799                 else if (bytes_per_msecs <= HNS3_RX_LOW_BYTE_RATE)
2800                         new_flow_level = HNS3_FLOW_LOW;
2801                 break;
2802         case HNS3_FLOW_HIGH:
2803         case HNS3_FLOW_ULTRA:
2804         default:
2805                 if (bytes_per_msecs <= HNS3_RX_MID_BYTE_RATE)
2806                         new_flow_level = HNS3_FLOW_MID;
2807                 break;
2808         }
2809
2810 #define HNS3_RX_ULTRA_PACKET_RATE 40
2811
2812         if (packets_per_msecs > HNS3_RX_ULTRA_PACKET_RATE &&
2813             &tqp_vector->rx_group == ring_group)
2814                 new_flow_level = HNS3_FLOW_ULTRA;
2815
2816         switch (new_flow_level) {
2817         case HNS3_FLOW_LOW:
2818                 new_int_gl = HNS3_INT_GL_50K;
2819                 break;
2820         case HNS3_FLOW_MID:
2821                 new_int_gl = HNS3_INT_GL_20K;
2822                 break;
2823         case HNS3_FLOW_HIGH:
2824                 new_int_gl = HNS3_INT_GL_18K;
2825                 break;
2826         case HNS3_FLOW_ULTRA:
2827                 new_int_gl = HNS3_INT_GL_8K;
2828                 break;
2829         default:
2830                 break;
2831         }
2832
2833         ring_group->total_bytes = 0;
2834         ring_group->total_packets = 0;
2835         ring_group->coal.flow_level = new_flow_level;
2836         if (new_int_gl != ring_group->coal.int_gl) {
2837                 ring_group->coal.int_gl = new_int_gl;
2838                 return true;
2839         }
2840         return false;
2841 }
2842
2843 static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
2844 {
2845         struct hns3_enet_ring_group *rx_group = &tqp_vector->rx_group;
2846         struct hns3_enet_ring_group *tx_group = &tqp_vector->tx_group;
2847         bool rx_update, tx_update;
2848
2849         if (tqp_vector->int_adapt_down > 0) {
2850                 tqp_vector->int_adapt_down--;
2851                 return;
2852         }
2853
2854         if (rx_group->coal.gl_adapt_enable) {
2855                 rx_update = hns3_get_new_int_gl(rx_group);
2856                 if (rx_update)
2857                         hns3_set_vector_coalesce_rx_gl(tqp_vector,
2858                                                        rx_group->coal.int_gl);
2859         }
2860
2861         if (tx_group->coal.gl_adapt_enable) {
2862                 tx_update = hns3_get_new_int_gl(&tqp_vector->tx_group);
2863                 if (tx_update)
2864                         hns3_set_vector_coalesce_tx_gl(tqp_vector,
2865                                                        tx_group->coal.int_gl);
2866         }
2867
2868         tqp_vector->last_jiffies = jiffies;
2869         tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START;
2870 }
2871
2872 static int hns3_nic_common_poll(struct napi_struct *napi, int budget)
2873 {
2874         struct hns3_nic_priv *priv = netdev_priv(napi->dev);
2875         struct hns3_enet_ring *ring;
2876         int rx_pkt_total = 0;
2877
2878         struct hns3_enet_tqp_vector *tqp_vector =
2879                 container_of(napi, struct hns3_enet_tqp_vector, napi);
2880         bool clean_complete = true;
2881         int rx_budget;
2882
2883         if (unlikely(test_bit(HNS3_NIC_STATE_DOWN, &priv->state))) {
2884                 napi_complete(napi);
2885                 return 0;
2886         }
2887
2888         /* Since the actual Tx work is minimal, we can give the Tx a larger
2889          * budget and be more aggressive about cleaning up the Tx descriptors.
2890          */
2891         hns3_for_each_ring(ring, tqp_vector->tx_group)
2892                 hns3_clean_tx_ring(ring);
2893
2894         /* make sure rx ring budget not smaller than 1 */
2895         rx_budget = max(budget / tqp_vector->num_tqps, 1);
2896
2897         hns3_for_each_ring(ring, tqp_vector->rx_group) {
2898                 int rx_cleaned = hns3_clean_rx_ring(ring, rx_budget,
2899                                                     hns3_rx_skb);
2900
2901                 if (rx_cleaned >= rx_budget)
2902                         clean_complete = false;
2903
2904                 rx_pkt_total += rx_cleaned;
2905         }
2906
2907         tqp_vector->rx_group.total_packets += rx_pkt_total;
2908
2909         if (!clean_complete)
2910                 return budget;
2911
2912         if (likely(!test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) &&
2913             napi_complete(napi)) {
2914                 hns3_update_new_int_gl(tqp_vector);
2915                 hns3_mask_vector_irq(tqp_vector, 1);
2916         }
2917
2918         return rx_pkt_total;
2919 }
2920
2921 static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
2922                                       struct hnae3_ring_chain_node *head)
2923 {
2924         struct pci_dev *pdev = tqp_vector->handle->pdev;
2925         struct hnae3_ring_chain_node *cur_chain = head;
2926         struct hnae3_ring_chain_node *chain;
2927         struct hns3_enet_ring *tx_ring;
2928         struct hns3_enet_ring *rx_ring;
2929
2930         tx_ring = tqp_vector->tx_group.ring;
2931         if (tx_ring) {
2932                 cur_chain->tqp_index = tx_ring->tqp->tqp_index;
2933                 hnae3_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
2934                               HNAE3_RING_TYPE_TX);
2935                 hnae3_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
2936                                 HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_TX);
2937
2938                 cur_chain->next = NULL;
2939
2940                 while (tx_ring->next) {
2941                         tx_ring = tx_ring->next;
2942
2943                         chain = devm_kzalloc(&pdev->dev, sizeof(*chain),
2944                                              GFP_KERNEL);
2945                         if (!chain)
2946                                 goto err_free_chain;
2947
2948                         cur_chain->next = chain;
2949                         chain->tqp_index = tx_ring->tqp->tqp_index;
2950                         hnae3_set_bit(chain->flag, HNAE3_RING_TYPE_B,
2951                                       HNAE3_RING_TYPE_TX);
2952                         hnae3_set_field(chain->int_gl_idx,
2953                                         HNAE3_RING_GL_IDX_M,
2954                                         HNAE3_RING_GL_IDX_S,
2955                                         HNAE3_RING_GL_TX);
2956
2957                         cur_chain = chain;
2958                 }
2959         }
2960
2961         rx_ring = tqp_vector->rx_group.ring;
2962         if (!tx_ring && rx_ring) {
2963                 cur_chain->next = NULL;
2964                 cur_chain->tqp_index = rx_ring->tqp->tqp_index;
2965                 hnae3_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
2966                               HNAE3_RING_TYPE_RX);
2967                 hnae3_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
2968                                 HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_RX);
2969
2970                 rx_ring = rx_ring->next;
2971         }
2972
2973         while (rx_ring) {
2974                 chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL);
2975                 if (!chain)
2976                         goto err_free_chain;
2977
2978                 cur_chain->next = chain;
2979                 chain->tqp_index = rx_ring->tqp->tqp_index;
2980                 hnae3_set_bit(chain->flag, HNAE3_RING_TYPE_B,
2981                               HNAE3_RING_TYPE_RX);
2982                 hnae3_set_field(chain->int_gl_idx, HNAE3_RING_GL_IDX_M,
2983                                 HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_RX);
2984
2985                 cur_chain = chain;
2986
2987                 rx_ring = rx_ring->next;
2988         }
2989
2990         return 0;
2991
2992 err_free_chain:
2993         cur_chain = head->next;
2994         while (cur_chain) {
2995                 chain = cur_chain->next;
2996                 devm_kfree(&pdev->dev, chain);
2997                 cur_chain = chain;
2998         }
2999
3000         return -ENOMEM;
3001 }
3002
3003 static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
3004                                         struct hnae3_ring_chain_node *head)
3005 {
3006         struct pci_dev *pdev = tqp_vector->handle->pdev;
3007         struct hnae3_ring_chain_node *chain_tmp, *chain;
3008
3009         chain = head->next;
3010
3011         while (chain) {
3012                 chain_tmp = chain->next;
3013                 devm_kfree(&pdev->dev, chain);
3014                 chain = chain_tmp;
3015         }
3016 }
3017
3018 static void hns3_add_ring_to_group(struct hns3_enet_ring_group *group,
3019                                    struct hns3_enet_ring *ring)
3020 {
3021         ring->next = group->ring;
3022         group->ring = ring;
3023
3024         group->count++;
3025 }
3026
3027 static void hns3_nic_set_cpumask(struct hns3_nic_priv *priv)
3028 {
3029         struct pci_dev *pdev = priv->ae_handle->pdev;
3030         struct hns3_enet_tqp_vector *tqp_vector;
3031         int num_vectors = priv->vector_num;
3032         int numa_node;
3033         int vector_i;
3034
3035         numa_node = dev_to_node(&pdev->dev);
3036
3037         for (vector_i = 0; vector_i < num_vectors; vector_i++) {
3038                 tqp_vector = &priv->tqp_vector[vector_i];
3039                 cpumask_set_cpu(cpumask_local_spread(vector_i, numa_node),
3040                                 &tqp_vector->affinity_mask);
3041         }
3042 }
3043
3044 static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
3045 {
3046         struct hnae3_ring_chain_node vector_ring_chain;
3047         struct hnae3_handle *h = priv->ae_handle;
3048         struct hns3_enet_tqp_vector *tqp_vector;
3049         int ret = 0;
3050         int i;
3051
3052         hns3_nic_set_cpumask(priv);
3053
3054         for (i = 0; i < priv->vector_num; i++) {
3055                 tqp_vector = &priv->tqp_vector[i];
3056                 hns3_vector_gl_rl_init_hw(tqp_vector, priv);
3057                 tqp_vector->num_tqps = 0;
3058         }
3059
3060         for (i = 0; i < h->kinfo.num_tqps; i++) {
3061                 u16 vector_i = i % priv->vector_num;
3062                 u16 tqp_num = h->kinfo.num_tqps;
3063
3064                 tqp_vector = &priv->tqp_vector[vector_i];
3065
3066                 hns3_add_ring_to_group(&tqp_vector->tx_group,
3067                                        priv->ring_data[i].ring);
3068
3069                 hns3_add_ring_to_group(&tqp_vector->rx_group,
3070                                        priv->ring_data[i + tqp_num].ring);
3071
3072                 priv->ring_data[i].ring->tqp_vector = tqp_vector;
3073                 priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector;
3074                 tqp_vector->num_tqps++;
3075         }
3076
3077         for (i = 0; i < priv->vector_num; i++) {
3078                 tqp_vector = &priv->tqp_vector[i];
3079
3080                 tqp_vector->rx_group.total_bytes = 0;
3081                 tqp_vector->rx_group.total_packets = 0;
3082                 tqp_vector->tx_group.total_bytes = 0;
3083                 tqp_vector->tx_group.total_packets = 0;
3084                 tqp_vector->handle = h;
3085
3086                 ret = hns3_get_vector_ring_chain(tqp_vector,
3087                                                  &vector_ring_chain);
3088                 if (ret)
3089                         return ret;
3090
3091                 ret = h->ae_algo->ops->map_ring_to_vector(h,
3092                         tqp_vector->vector_irq, &vector_ring_chain);
3093
3094                 hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
3095
3096                 if (ret)
3097                         goto map_ring_fail;
3098
3099                 netif_napi_add(priv->netdev, &tqp_vector->napi,
3100                                hns3_nic_common_poll, NAPI_POLL_WEIGHT);
3101         }
3102
3103         return 0;
3104
3105 map_ring_fail:
3106         while (i--)
3107                 netif_napi_del(&priv->tqp_vector[i].napi);
3108
3109         return ret;
3110 }
3111
3112 static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv)
3113 {
3114         struct hnae3_handle *h = priv->ae_handle;
3115         struct hns3_enet_tqp_vector *tqp_vector;
3116         struct hnae3_vector_info *vector;
3117         struct pci_dev *pdev = h->pdev;
3118         u16 tqp_num = h->kinfo.num_tqps;
3119         u16 vector_num;
3120         int ret = 0;
3121         u16 i;
3122
3123         /* RSS size, cpu online and vector_num should be the same */
3124         /* Should consider 2p/4p later */
3125         vector_num = min_t(u16, num_online_cpus(), tqp_num);
3126         vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
3127                               GFP_KERNEL);
3128         if (!vector)
3129                 return -ENOMEM;
3130
3131         vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector);
3132
3133         priv->vector_num = vector_num;
3134         priv->tqp_vector = (struct hns3_enet_tqp_vector *)
3135                 devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector),
3136                              GFP_KERNEL);
3137         if (!priv->tqp_vector) {
3138                 ret = -ENOMEM;
3139                 goto out;
3140         }
3141
3142         for (i = 0; i < priv->vector_num; i++) {
3143                 tqp_vector = &priv->tqp_vector[i];
3144                 tqp_vector->idx = i;
3145                 tqp_vector->mask_addr = vector[i].io_addr;
3146                 tqp_vector->vector_irq = vector[i].vector;
3147                 hns3_vector_gl_rl_init(tqp_vector, priv);
3148         }
3149
3150 out:
3151         devm_kfree(&pdev->dev, vector);
3152         return ret;
3153 }
3154
3155 static void hns3_clear_ring_group(struct hns3_enet_ring_group *group)
3156 {
3157         group->ring = NULL;
3158         group->count = 0;
3159 }
3160
3161 static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
3162 {
3163         struct hnae3_ring_chain_node vector_ring_chain;
3164         struct hnae3_handle *h = priv->ae_handle;
3165         struct hns3_enet_tqp_vector *tqp_vector;
3166         int i, ret;
3167
3168         for (i = 0; i < priv->vector_num; i++) {
3169                 tqp_vector = &priv->tqp_vector[i];
3170
3171                 ret = hns3_get_vector_ring_chain(tqp_vector,
3172                                                  &vector_ring_chain);
3173                 if (ret)
3174                         return ret;
3175
3176                 ret = h->ae_algo->ops->unmap_ring_from_vector(h,
3177                         tqp_vector->vector_irq, &vector_ring_chain);
3178                 if (ret)
3179                         return ret;
3180
3181                 hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
3182
3183                 if (priv->tqp_vector[i].irq_init_flag == HNS3_VECTOR_INITED) {
3184                         (void)irq_set_affinity_hint(
3185                                 priv->tqp_vector[i].vector_irq,
3186                                                     NULL);
3187                         free_irq(priv->tqp_vector[i].vector_irq,
3188                                  &priv->tqp_vector[i]);
3189                 }
3190
3191                 priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED;
3192                 hns3_clear_ring_group(&tqp_vector->rx_group);
3193                 hns3_clear_ring_group(&tqp_vector->tx_group);
3194                 netif_napi_del(&priv->tqp_vector[i].napi);
3195         }
3196
3197         return 0;
3198 }
3199
3200 static int hns3_nic_dealloc_vector_data(struct hns3_nic_priv *priv)
3201 {
3202         struct hnae3_handle *h = priv->ae_handle;
3203         struct pci_dev *pdev = h->pdev;
3204         int i, ret;
3205
3206         for (i = 0; i < priv->vector_num; i++) {
3207                 struct hns3_enet_tqp_vector *tqp_vector;
3208
3209                 tqp_vector = &priv->tqp_vector[i];
3210                 ret = h->ae_algo->ops->put_vector(h, tqp_vector->vector_irq);
3211                 if (ret)
3212                         return ret;
3213         }
3214
3215         devm_kfree(&pdev->dev, priv->tqp_vector);
3216         return 0;
3217 }
3218
3219 static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv,
3220                              int ring_type)
3221 {
3222         struct hns3_nic_ring_data *ring_data = priv->ring_data;
3223         int queue_num = priv->ae_handle->kinfo.num_tqps;
3224         struct pci_dev *pdev = priv->ae_handle->pdev;
3225         struct hns3_enet_ring *ring;
3226
3227         ring = devm_kzalloc(&pdev->dev, sizeof(*ring), GFP_KERNEL);
3228         if (!ring)
3229                 return -ENOMEM;
3230
3231         if (ring_type == HNAE3_RING_TYPE_TX) {
3232                 ring_data[q->tqp_index].ring = ring;
3233                 ring_data[q->tqp_index].queue_index = q->tqp_index;
3234                 ring->io_base = (u8 __iomem *)q->io_base + HNS3_TX_REG_OFFSET;
3235         } else {
3236                 ring_data[q->tqp_index + queue_num].ring = ring;
3237                 ring_data[q->tqp_index + queue_num].queue_index = q->tqp_index;
3238                 ring->io_base = q->io_base;
3239         }
3240
3241         hnae3_set_bit(ring->flag, HNAE3_RING_TYPE_B, ring_type);
3242
3243         ring->tqp = q;
3244         ring->desc = NULL;
3245         ring->desc_cb = NULL;
3246         ring->dev = priv->dev;
3247         ring->desc_dma_addr = 0;
3248         ring->buf_size = q->buf_size;
3249         ring->desc_num = q->desc_num;
3250         ring->next_to_use = 0;
3251         ring->next_to_clean = 0;
3252
3253         return 0;
3254 }
3255
3256 static int hns3_queue_to_ring(struct hnae3_queue *tqp,
3257                               struct hns3_nic_priv *priv)
3258 {
3259         int ret;
3260
3261         ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_TX);
3262         if (ret)
3263                 return ret;
3264
3265         ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX);
3266         if (ret) {
3267                 devm_kfree(priv->dev, priv->ring_data[tqp->tqp_index].ring);
3268                 return ret;
3269         }
3270
3271         return 0;
3272 }
3273
3274 static int hns3_get_ring_config(struct hns3_nic_priv *priv)
3275 {
3276         struct hnae3_handle *h = priv->ae_handle;
3277         struct pci_dev *pdev = h->pdev;
3278         int i, ret;
3279
3280         priv->ring_data =  devm_kzalloc(&pdev->dev,
3281                                         array3_size(h->kinfo.num_tqps,
3282                                                     sizeof(*priv->ring_data),
3283                                                     2),
3284                                         GFP_KERNEL);
3285         if (!priv->ring_data)
3286                 return -ENOMEM;
3287
3288         for (i = 0; i < h->kinfo.num_tqps; i++) {
3289                 ret = hns3_queue_to_ring(h->kinfo.tqp[i], priv);
3290                 if (ret)
3291                         goto err;
3292         }
3293
3294         return 0;
3295 err:
3296         while (i--) {
3297                 devm_kfree(priv->dev, priv->ring_data[i].ring);
3298                 devm_kfree(priv->dev,
3299                            priv->ring_data[i + h->kinfo.num_tqps].ring);
3300         }
3301
3302         devm_kfree(&pdev->dev, priv->ring_data);
3303         return ret;
3304 }
3305
3306 static void hns3_put_ring_config(struct hns3_nic_priv *priv)
3307 {
3308         struct hnae3_handle *h = priv->ae_handle;
3309         int i;
3310
3311         for (i = 0; i < h->kinfo.num_tqps; i++) {
3312                 devm_kfree(priv->dev, priv->ring_data[i].ring);
3313                 devm_kfree(priv->dev,
3314                            priv->ring_data[i + h->kinfo.num_tqps].ring);
3315         }
3316         devm_kfree(priv->dev, priv->ring_data);
3317 }
3318
3319 static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring)
3320 {
3321         int ret;
3322
3323         if (ring->desc_num <= 0 || ring->buf_size <= 0)
3324                 return -EINVAL;
3325
3326         ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]),
3327                                 GFP_KERNEL);
3328         if (!ring->desc_cb) {
3329                 ret = -ENOMEM;
3330                 goto out;
3331         }
3332
3333         ret = hns3_alloc_desc(ring);
3334         if (ret)
3335                 goto out_with_desc_cb;
3336
3337         if (!HNAE3_IS_TX_RING(ring)) {
3338                 ret = hns3_alloc_ring_buffers(ring);
3339                 if (ret)
3340                         goto out_with_desc;
3341         }
3342
3343         return 0;
3344
3345 out_with_desc:
3346         hns3_free_desc(ring);
3347 out_with_desc_cb:
3348         kfree(ring->desc_cb);
3349         ring->desc_cb = NULL;
3350 out:
3351         return ret;
3352 }
3353
3354 static void hns3_fini_ring(struct hns3_enet_ring *ring)
3355 {
3356         hns3_free_desc(ring);
3357         kfree(ring->desc_cb);
3358         ring->desc_cb = NULL;
3359         ring->next_to_clean = 0;
3360         ring->next_to_use = 0;
3361 }
3362
3363 static int hns3_buf_size2type(u32 buf_size)
3364 {
3365         int bd_size_type;
3366
3367         switch (buf_size) {
3368         case 512:
3369                 bd_size_type = HNS3_BD_SIZE_512_TYPE;
3370                 break;
3371         case 1024:
3372                 bd_size_type = HNS3_BD_SIZE_1024_TYPE;
3373                 break;
3374         case 2048:
3375                 bd_size_type = HNS3_BD_SIZE_2048_TYPE;
3376                 break;
3377         case 4096:
3378                 bd_size_type = HNS3_BD_SIZE_4096_TYPE;
3379                 break;
3380         default:
3381                 bd_size_type = HNS3_BD_SIZE_2048_TYPE;
3382         }
3383
3384         return bd_size_type;
3385 }
3386
3387 static void hns3_init_ring_hw(struct hns3_enet_ring *ring)
3388 {
3389         dma_addr_t dma = ring->desc_dma_addr;
3390         struct hnae3_queue *q = ring->tqp;
3391
3392         if (!HNAE3_IS_TX_RING(ring)) {
3393                 hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_L_REG,
3394                                (u32)dma);
3395                 hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_H_REG,
3396                                (u32)((dma >> 31) >> 1));
3397
3398                 hns3_write_dev(q, HNS3_RING_RX_RING_BD_LEN_REG,
3399                                hns3_buf_size2type(ring->buf_size));
3400                 hns3_write_dev(q, HNS3_RING_RX_RING_BD_NUM_REG,
3401                                ring->desc_num / 8 - 1);
3402
3403         } else {
3404                 hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_L_REG,
3405                                (u32)dma);
3406                 hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_H_REG,
3407                                (u32)((dma >> 31) >> 1));
3408
3409                 hns3_write_dev(q, HNS3_RING_TX_RING_BD_NUM_REG,
3410                                ring->desc_num / 8 - 1);
3411         }
3412 }
3413
3414 static void hns3_init_tx_ring_tc(struct hns3_nic_priv *priv)
3415 {
3416         struct hnae3_knic_private_info *kinfo = &priv->ae_handle->kinfo;
3417         int i;
3418
3419         for (i = 0; i < HNAE3_MAX_TC; i++) {
3420                 struct hnae3_tc_info *tc_info = &kinfo->tc_info[i];
3421                 int j;
3422
3423                 if (!tc_info->enable)
3424                         continue;
3425
3426                 for (j = 0; j < tc_info->tqp_count; j++) {
3427                         struct hnae3_queue *q;
3428
3429                         q = priv->ring_data[tc_info->tqp_offset + j].ring->tqp;
3430                         hns3_write_dev(q, HNS3_RING_TX_RING_TC_REG,
3431                                        tc_info->tc);
3432                 }
3433         }
3434 }
3435
3436 int hns3_init_all_ring(struct hns3_nic_priv *priv)
3437 {
3438         struct hnae3_handle *h = priv->ae_handle;
3439         int ring_num = h->kinfo.num_tqps * 2;
3440         int i, j;
3441         int ret;
3442
3443         for (i = 0; i < ring_num; i++) {
3444                 ret = hns3_alloc_ring_memory(priv->ring_data[i].ring);
3445                 if (ret) {
3446                         dev_err(priv->dev,
3447                                 "Alloc ring memory fail! ret=%d\n", ret);
3448                         goto out_when_alloc_ring_memory;
3449                 }
3450
3451                 u64_stats_init(&priv->ring_data[i].ring->syncp);
3452         }
3453
3454         return 0;
3455
3456 out_when_alloc_ring_memory:
3457         for (j = i - 1; j >= 0; j--)
3458                 hns3_fini_ring(priv->ring_data[j].ring);
3459
3460         return -ENOMEM;
3461 }
3462
3463 int hns3_uninit_all_ring(struct hns3_nic_priv *priv)
3464 {
3465         struct hnae3_handle *h = priv->ae_handle;
3466         int i;
3467
3468         for (i = 0; i < h->kinfo.num_tqps; i++) {
3469                 hns3_fini_ring(priv->ring_data[i].ring);
3470                 hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring);
3471         }
3472         return 0;
3473 }
3474
3475 /* Set mac addr if it is configured. or leave it to the AE driver */
3476 static int hns3_init_mac_addr(struct net_device *netdev, bool init)
3477 {
3478         struct hns3_nic_priv *priv = netdev_priv(netdev);
3479         struct hnae3_handle *h = priv->ae_handle;
3480         u8 mac_addr_temp[ETH_ALEN];
3481         int ret = 0;
3482
3483         if (h->ae_algo->ops->get_mac_addr && init) {
3484                 h->ae_algo->ops->get_mac_addr(h, mac_addr_temp);
3485                 ether_addr_copy(netdev->dev_addr, mac_addr_temp);
3486         }
3487
3488         /* Check if the MAC address is valid, if not get a random one */
3489         if (!is_valid_ether_addr(netdev->dev_addr)) {
3490                 eth_hw_addr_random(netdev);
3491                 dev_warn(priv->dev, "using random MAC address %pM\n",
3492                          netdev->dev_addr);
3493         }
3494
3495         if (h->ae_algo->ops->set_mac_addr)
3496                 ret = h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr, true);
3497
3498         return ret;
3499 }
3500
3501 static int hns3_restore_fd_rules(struct net_device *netdev)
3502 {
3503         struct hnae3_handle *h = hns3_get_handle(netdev);
3504         int ret = 0;
3505
3506         if (h->ae_algo->ops->restore_fd_rules)
3507                 ret = h->ae_algo->ops->restore_fd_rules(h);
3508
3509         return ret;
3510 }
3511
3512 static void hns3_del_all_fd_rules(struct net_device *netdev, bool clear_list)
3513 {
3514         struct hnae3_handle *h = hns3_get_handle(netdev);
3515
3516         if (h->ae_algo->ops->del_all_fd_entries)
3517                 h->ae_algo->ops->del_all_fd_entries(h, clear_list);
3518 }
3519
3520 static void hns3_nic_set_priv_ops(struct net_device *netdev)
3521 {
3522         struct hns3_nic_priv *priv = netdev_priv(netdev);
3523
3524         priv->ops.fill_desc = hns3_fill_desc;
3525         if ((netdev->features & NETIF_F_TSO) ||
3526             (netdev->features & NETIF_F_TSO6))
3527                 priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
3528         else
3529                 priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
3530 }
3531
3532 static int hns3_client_start(struct hnae3_handle *handle)
3533 {
3534         if (!handle->ae_algo->ops->client_start)
3535                 return 0;
3536
3537         return handle->ae_algo->ops->client_start(handle);
3538 }
3539
3540 static void hns3_client_stop(struct hnae3_handle *handle)
3541 {
3542         if (!handle->ae_algo->ops->client_stop)
3543                 return;
3544
3545         handle->ae_algo->ops->client_stop(handle);
3546 }
3547
3548 static int hns3_client_init(struct hnae3_handle *handle)
3549 {
3550         struct pci_dev *pdev = handle->pdev;
3551         u16 alloc_tqps, max_rss_size;
3552         struct hns3_nic_priv *priv;
3553         struct net_device *netdev;
3554         int ret;
3555
3556         handle->ae_algo->ops->get_tqps_and_rss_info(handle, &alloc_tqps,
3557                                                     &max_rss_size);
3558         netdev = alloc_etherdev_mq(sizeof(struct hns3_nic_priv), alloc_tqps);
3559         if (!netdev)
3560                 return -ENOMEM;
3561
3562         priv = netdev_priv(netdev);
3563         priv->dev = &pdev->dev;
3564         priv->netdev = netdev;
3565         priv->ae_handle = handle;
3566         priv->tx_timeout_count = 0;
3567
3568         handle->kinfo.netdev = netdev;
3569         handle->priv = (void *)priv;
3570
3571         hns3_init_mac_addr(netdev, true);
3572
3573         hns3_set_default_feature(netdev);
3574
3575         netdev->watchdog_timeo = HNS3_TX_TIMEOUT;
3576         netdev->priv_flags |= IFF_UNICAST_FLT;
3577         netdev->netdev_ops = &hns3_nic_netdev_ops;
3578         SET_NETDEV_DEV(netdev, &pdev->dev);
3579         hns3_ethtool_set_ops(netdev);
3580         hns3_nic_set_priv_ops(netdev);
3581
3582         /* Carrier off reporting is important to ethtool even BEFORE open */
3583         netif_carrier_off(netdev);
3584
3585         ret = hns3_get_ring_config(priv);
3586         if (ret) {
3587                 ret = -ENOMEM;
3588                 goto out_get_ring_cfg;
3589         }
3590
3591         ret = hns3_nic_alloc_vector_data(priv);
3592         if (ret) {
3593                 ret = -ENOMEM;
3594                 goto out_alloc_vector_data;
3595         }
3596
3597         ret = hns3_nic_init_vector_data(priv);
3598         if (ret) {
3599                 ret = -ENOMEM;
3600                 goto out_init_vector_data;
3601         }
3602
3603         ret = hns3_init_all_ring(priv);
3604         if (ret) {
3605                 ret = -ENOMEM;
3606                 goto out_init_ring_data;
3607         }
3608
3609         ret = register_netdev(netdev);
3610         if (ret) {
3611                 dev_err(priv->dev, "probe register netdev fail!\n");
3612                 goto out_reg_netdev_fail;
3613         }
3614
3615         ret = hns3_client_start(handle);
3616         if (ret) {
3617                 dev_err(priv->dev, "hns3_client_start fail! ret=%d\n", ret);
3618                         goto out_reg_netdev_fail;
3619         }
3620
3621         hns3_dcbnl_setup(handle);
3622
3623         hns3_dbg_init(handle);
3624
3625         /* MTU range: (ETH_MIN_MTU(kernel default) - 9702) */
3626         netdev->max_mtu = HNS3_MAX_MTU;
3627
3628         set_bit(HNS3_NIC_STATE_INITED, &priv->state);
3629
3630         return ret;
3631
3632 out_reg_netdev_fail:
3633 out_init_ring_data:
3634         (void)hns3_nic_uninit_vector_data(priv);
3635 out_init_vector_data:
3636         hns3_nic_dealloc_vector_data(priv);
3637 out_alloc_vector_data:
3638         priv->ring_data = NULL;
3639 out_get_ring_cfg:
3640         priv->ae_handle = NULL;
3641         free_netdev(netdev);
3642         return ret;
3643 }
3644
3645 static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
3646 {
3647         struct net_device *netdev = handle->kinfo.netdev;
3648         struct hns3_nic_priv *priv = netdev_priv(netdev);
3649         int ret;
3650
3651         hns3_client_stop(handle);
3652
3653         hns3_remove_hw_addr(netdev);
3654
3655         if (netdev->reg_state != NETREG_UNINITIALIZED)
3656                 unregister_netdev(netdev);
3657
3658         if (!test_and_clear_bit(HNS3_NIC_STATE_INITED, &priv->state)) {
3659                 netdev_warn(netdev, "already uninitialized\n");
3660                 goto out_netdev_free;
3661         }
3662
3663         hns3_del_all_fd_rules(netdev, true);
3664
3665         hns3_force_clear_all_rx_ring(handle);
3666
3667         ret = hns3_nic_uninit_vector_data(priv);
3668         if (ret)
3669                 netdev_err(netdev, "uninit vector error\n");
3670
3671         ret = hns3_nic_dealloc_vector_data(priv);
3672         if (ret)
3673                 netdev_err(netdev, "dealloc vector error\n");
3674
3675         ret = hns3_uninit_all_ring(priv);
3676         if (ret)
3677                 netdev_err(netdev, "uninit ring error\n");
3678
3679         hns3_put_ring_config(priv);
3680
3681         hns3_dbg_uninit(handle);
3682
3683         priv->ring_data = NULL;
3684
3685 out_netdev_free:
3686         free_netdev(netdev);
3687 }
3688
3689 static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup)
3690 {
3691         struct net_device *netdev = handle->kinfo.netdev;
3692
3693         if (!netdev)
3694                 return;
3695
3696         if (linkup) {
3697                 netif_carrier_on(netdev);
3698                 netif_tx_wake_all_queues(netdev);
3699                 netdev_info(netdev, "link up\n");
3700         } else {
3701                 netif_carrier_off(netdev);
3702                 netif_tx_stop_all_queues(netdev);
3703                 netdev_info(netdev, "link down\n");
3704         }
3705 }
3706
3707 static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
3708 {
3709         struct hnae3_knic_private_info *kinfo = &handle->kinfo;
3710         struct net_device *ndev = kinfo->netdev;
3711         bool if_running;
3712         int ret;
3713
3714         if (tc > HNAE3_MAX_TC)
3715                 return -EINVAL;
3716
3717         if (!ndev)
3718                 return -ENODEV;
3719
3720         if_running = netif_running(ndev);
3721
3722         if (if_running) {
3723                 (void)hns3_nic_net_stop(ndev);
3724                 msleep(100);
3725         }
3726
3727         ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ?
3728                 kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP;
3729         if (ret)
3730                 goto err_out;
3731
3732         ret = hns3_nic_set_real_num_queue(ndev);
3733
3734 err_out:
3735         if (if_running)
3736                 (void)hns3_nic_net_open(ndev);
3737
3738         return ret;
3739 }
3740
3741 static int hns3_recover_hw_addr(struct net_device *ndev)
3742 {
3743         struct netdev_hw_addr_list *list;
3744         struct netdev_hw_addr *ha, *tmp;
3745         int ret = 0;
3746
3747         /* go through and sync uc_addr entries to the device */
3748         list = &ndev->uc;
3749         list_for_each_entry_safe(ha, tmp, &list->list, list) {
3750                 ret = hns3_nic_uc_sync(ndev, ha->addr);
3751                 if (ret)
3752                         return ret;
3753         }
3754
3755         /* go through and sync mc_addr entries to the device */
3756         list = &ndev->mc;
3757         list_for_each_entry_safe(ha, tmp, &list->list, list) {
3758                 ret = hns3_nic_mc_sync(ndev, ha->addr);
3759                 if (ret)
3760                         return ret;
3761         }
3762
3763         return ret;
3764 }
3765
3766 static void hns3_remove_hw_addr(struct net_device *netdev)
3767 {
3768         struct netdev_hw_addr_list *list;
3769         struct netdev_hw_addr *ha, *tmp;
3770
3771         hns3_nic_uc_unsync(netdev, netdev->dev_addr);
3772
3773         /* go through and unsync uc_addr entries to the device */
3774         list = &netdev->uc;
3775         list_for_each_entry_safe(ha, tmp, &list->list, list)
3776                 hns3_nic_uc_unsync(netdev, ha->addr);
3777
3778         /* go through and unsync mc_addr entries to the device */
3779         list = &netdev->mc;
3780         list_for_each_entry_safe(ha, tmp, &list->list, list)
3781                 if (ha->refcount > 1)
3782                         hns3_nic_mc_unsync(netdev, ha->addr);
3783 }
3784
3785 static void hns3_clear_tx_ring(struct hns3_enet_ring *ring)
3786 {
3787         while (ring->next_to_clean != ring->next_to_use) {
3788                 ring->desc[ring->next_to_clean].tx.bdtp_fe_sc_vld_ra_ri = 0;
3789                 hns3_free_buffer_detach(ring, ring->next_to_clean);
3790                 ring_ptr_move_fw(ring, next_to_clean);
3791         }
3792 }
3793
3794 static int hns3_clear_rx_ring(struct hns3_enet_ring *ring)
3795 {
3796         struct hns3_desc_cb res_cbs;
3797         int ret;
3798
3799         while (ring->next_to_use != ring->next_to_clean) {
3800                 /* When a buffer is not reused, it's memory has been
3801                  * freed in hns3_handle_rx_bd or will be freed by
3802                  * stack, so we need to replace the buffer here.
3803                  */
3804                 if (!ring->desc_cb[ring->next_to_use].reuse_flag) {
3805                         ret = hns3_reserve_buffer_map(ring, &res_cbs);
3806                         if (ret) {
3807                                 u64_stats_update_begin(&ring->syncp);
3808                                 ring->stats.sw_err_cnt++;
3809                                 u64_stats_update_end(&ring->syncp);
3810                                 /* if alloc new buffer fail, exit directly
3811                                  * and reclear in up flow.
3812                                  */
3813                                 netdev_warn(ring->tqp->handle->kinfo.netdev,
3814                                             "reserve buffer map failed, ret = %d\n",
3815                                             ret);
3816                                 return ret;
3817                         }
3818                         hns3_replace_buffer(ring, ring->next_to_use,
3819                                             &res_cbs);
3820                 }
3821                 ring_ptr_move_fw(ring, next_to_use);
3822         }
3823
3824         return 0;
3825 }
3826
3827 static void hns3_force_clear_rx_ring(struct hns3_enet_ring *ring)
3828 {
3829         while (ring->next_to_use != ring->next_to_clean) {
3830                 /* When a buffer is not reused, it's memory has been
3831                  * freed in hns3_handle_rx_bd or will be freed by
3832                  * stack, so only need to unmap the buffer here.
3833                  */
3834                 if (!ring->desc_cb[ring->next_to_use].reuse_flag) {
3835                         hns3_unmap_buffer(ring,
3836                                           &ring->desc_cb[ring->next_to_use]);
3837                         ring->desc_cb[ring->next_to_use].dma = 0;
3838                 }
3839
3840                 ring_ptr_move_fw(ring, next_to_use);
3841         }
3842 }
3843
3844 static void hns3_force_clear_all_rx_ring(struct hnae3_handle *h)
3845 {
3846         struct net_device *ndev = h->kinfo.netdev;
3847         struct hns3_nic_priv *priv = netdev_priv(ndev);
3848         struct hns3_enet_ring *ring;
3849         u32 i;
3850
3851         for (i = 0; i < h->kinfo.num_tqps; i++) {
3852                 ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
3853                 hns3_force_clear_rx_ring(ring);
3854         }
3855 }
3856
3857 static void hns3_clear_all_ring(struct hnae3_handle *h)
3858 {
3859         struct net_device *ndev = h->kinfo.netdev;
3860         struct hns3_nic_priv *priv = netdev_priv(ndev);
3861         u32 i;
3862
3863         for (i = 0; i < h->kinfo.num_tqps; i++) {
3864                 struct netdev_queue *dev_queue;
3865                 struct hns3_enet_ring *ring;
3866
3867                 ring = priv->ring_data[i].ring;
3868                 hns3_clear_tx_ring(ring);
3869                 dev_queue = netdev_get_tx_queue(ndev,
3870                                                 priv->ring_data[i].queue_index);
3871                 netdev_tx_reset_queue(dev_queue);
3872
3873                 ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
3874                 /* Continue to clear other rings even if clearing some
3875                  * rings failed.
3876                  */
3877                 hns3_clear_rx_ring(ring);
3878         }
3879 }
3880
3881 int hns3_nic_reset_all_ring(struct hnae3_handle *h)
3882 {
3883         struct net_device *ndev = h->kinfo.netdev;
3884         struct hns3_nic_priv *priv = netdev_priv(ndev);
3885         struct hns3_enet_ring *rx_ring;
3886         int i, j;
3887         int ret;
3888
3889         for (i = 0; i < h->kinfo.num_tqps; i++) {
3890                 ret = h->ae_algo->ops->reset_queue(h, i);
3891                 if (ret)
3892                         return ret;
3893
3894                 hns3_init_ring_hw(priv->ring_data[i].ring);
3895
3896                 /* We need to clear tx ring here because self test will
3897                  * use the ring and will not run down before up
3898                  */
3899                 hns3_clear_tx_ring(priv->ring_data[i].ring);
3900                 priv->ring_data[i].ring->next_to_clean = 0;
3901                 priv->ring_data[i].ring->next_to_use = 0;
3902
3903                 rx_ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
3904                 hns3_init_ring_hw(rx_ring);
3905                 ret = hns3_clear_rx_ring(rx_ring);
3906                 if (ret)
3907                         return ret;
3908
3909                 /* We can not know the hardware head and tail when this
3910                  * function is called in reset flow, so we reuse all desc.
3911                  */
3912                 for (j = 0; j < rx_ring->desc_num; j++)
3913                         hns3_reuse_buffer(rx_ring, j);
3914
3915                 rx_ring->next_to_clean = 0;
3916                 rx_ring->next_to_use = 0;
3917         }
3918
3919         hns3_init_tx_ring_tc(priv);
3920
3921         return 0;
3922 }
3923
3924 static void hns3_store_coal(struct hns3_nic_priv *priv)
3925 {
3926         /* ethtool only support setting and querying one coal
3927          * configuation for now, so save the vector 0' coal
3928          * configuation here in order to restore it.
3929          */
3930         memcpy(&priv->tx_coal, &priv->tqp_vector[0].tx_group.coal,
3931                sizeof(struct hns3_enet_coalesce));
3932         memcpy(&priv->rx_coal, &priv->tqp_vector[0].rx_group.coal,
3933                sizeof(struct hns3_enet_coalesce));
3934 }
3935
3936 static void hns3_restore_coal(struct hns3_nic_priv *priv)
3937 {
3938         u16 vector_num = priv->vector_num;
3939         int i;
3940
3941         for (i = 0; i < vector_num; i++) {
3942                 memcpy(&priv->tqp_vector[i].tx_group.coal, &priv->tx_coal,
3943                        sizeof(struct hns3_enet_coalesce));
3944                 memcpy(&priv->tqp_vector[i].rx_group.coal, &priv->rx_coal,
3945                        sizeof(struct hns3_enet_coalesce));
3946         }
3947 }
3948
3949 static int hns3_reset_notify_down_enet(struct hnae3_handle *handle)
3950 {
3951         struct hnae3_ae_dev *ae_dev = pci_get_drvdata(handle->pdev);
3952         struct hnae3_knic_private_info *kinfo = &handle->kinfo;
3953         struct net_device *ndev = kinfo->netdev;
3954         struct hns3_nic_priv *priv = netdev_priv(ndev);
3955
3956         if (test_and_set_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
3957                 return 0;
3958
3959         /* it is cumbersome for hardware to pick-and-choose entries for deletion
3960          * from table space. Hence, for function reset software intervention is
3961          * required to delete the entries
3962          */
3963         if (hns3_dev_ongoing_func_reset(ae_dev)) {
3964                 hns3_remove_hw_addr(ndev);
3965                 hns3_del_all_fd_rules(ndev, false);
3966         }
3967
3968         if (!netif_running(ndev))
3969                 return 0;
3970
3971         return hns3_nic_net_stop(ndev);
3972 }
3973
3974 static int hns3_reset_notify_up_enet(struct hnae3_handle *handle)
3975 {
3976         struct hnae3_knic_private_info *kinfo = &handle->kinfo;
3977         struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev);
3978         int ret = 0;
3979
3980         if (netif_running(kinfo->netdev)) {
3981                 ret = hns3_nic_net_up(kinfo->netdev);
3982                 if (ret) {
3983                         netdev_err(kinfo->netdev,
3984                                    "hns net up fail, ret=%d!\n", ret);
3985                         return ret;
3986                 }
3987         }
3988
3989         clear_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
3990
3991         return ret;
3992 }
3993
3994 static int hns3_reset_notify_init_enet(struct hnae3_handle *handle)
3995 {
3996         struct net_device *netdev = handle->kinfo.netdev;
3997         struct hns3_nic_priv *priv = netdev_priv(netdev);
3998         bool vlan_filter_enable;
3999         int ret;
4000
4001         ret = hns3_init_mac_addr(netdev, false);
4002         if (ret)
4003                 return ret;
4004
4005         ret = hns3_recover_hw_addr(netdev);
4006         if (ret)
4007                 return ret;
4008
4009         ret = hns3_update_promisc_mode(netdev, handle->netdev_flags);
4010         if (ret)
4011                 return ret;
4012
4013         vlan_filter_enable = netdev->flags & IFF_PROMISC ? false : true;
4014         hns3_enable_vlan_filter(netdev, vlan_filter_enable);
4015
4016         /* Hardware table is only clear when pf resets */
4017         if (!(handle->flags & HNAE3_SUPPORT_VF)) {
4018                 ret = hns3_restore_vlan(netdev);
4019                 if (ret)
4020                         return ret;
4021         }
4022
4023         ret = hns3_restore_fd_rules(netdev);
4024         if (ret)
4025                 return ret;
4026
4027         /* Carrier off reporting is important to ethtool even BEFORE open */
4028         netif_carrier_off(netdev);
4029
4030         ret = hns3_nic_alloc_vector_data(priv);
4031         if (ret)
4032                 return ret;
4033
4034         hns3_restore_coal(priv);
4035
4036         ret = hns3_nic_init_vector_data(priv);
4037         if (ret)
4038                 goto err_dealloc_vector;
4039
4040         ret = hns3_init_all_ring(priv);
4041         if (ret)
4042                 goto err_uninit_vector;
4043
4044         set_bit(HNS3_NIC_STATE_INITED, &priv->state);
4045
4046         return ret;
4047
4048 err_uninit_vector:
4049         hns3_nic_uninit_vector_data(priv);
4050         priv->ring_data = NULL;
4051 err_dealloc_vector:
4052         hns3_nic_dealloc_vector_data(priv);
4053
4054         return ret;
4055 }
4056
4057 static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
4058 {
4059         struct net_device *netdev = handle->kinfo.netdev;
4060         struct hns3_nic_priv *priv = netdev_priv(netdev);
4061         int ret;
4062
4063         if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state)) {
4064                 netdev_warn(netdev, "already uninitialized\n");
4065                 return 0;
4066         }
4067
4068         hns3_force_clear_all_rx_ring(handle);
4069
4070         ret = hns3_nic_uninit_vector_data(priv);
4071         if (ret) {
4072                 netdev_err(netdev, "uninit vector error\n");
4073                 return ret;
4074         }
4075
4076         hns3_store_coal(priv);
4077
4078         ret = hns3_nic_dealloc_vector_data(priv);
4079         if (ret)
4080                 netdev_err(netdev, "dealloc vector error\n");
4081
4082         ret = hns3_uninit_all_ring(priv);
4083         if (ret)
4084                 netdev_err(netdev, "uninit ring error\n");
4085
4086         clear_bit(HNS3_NIC_STATE_INITED, &priv->state);
4087
4088         return ret;
4089 }
4090
4091 static int hns3_reset_notify(struct hnae3_handle *handle,
4092                              enum hnae3_reset_notify_type type)
4093 {
4094         int ret = 0;
4095
4096         switch (type) {
4097         case HNAE3_UP_CLIENT:
4098                 ret = hns3_reset_notify_up_enet(handle);
4099                 break;
4100         case HNAE3_DOWN_CLIENT:
4101                 ret = hns3_reset_notify_down_enet(handle);
4102                 break;
4103         case HNAE3_INIT_CLIENT:
4104                 ret = hns3_reset_notify_init_enet(handle);
4105                 break;
4106         case HNAE3_UNINIT_CLIENT:
4107                 ret = hns3_reset_notify_uninit_enet(handle);
4108                 break;
4109         default:
4110                 break;
4111         }
4112
4113         return ret;
4114 }
4115
4116 static int hns3_modify_tqp_num(struct net_device *netdev, u16 new_tqp_num)
4117 {
4118         struct hns3_nic_priv *priv = netdev_priv(netdev);
4119         struct hnae3_handle *h = hns3_get_handle(netdev);
4120         int ret;
4121
4122         ret = h->ae_algo->ops->set_channels(h, new_tqp_num);
4123         if (ret)
4124                 return ret;
4125
4126         ret = hns3_get_ring_config(priv);
4127         if (ret)
4128                 return ret;
4129
4130         ret = hns3_nic_alloc_vector_data(priv);
4131         if (ret)
4132                 goto err_alloc_vector;
4133
4134         hns3_restore_coal(priv);
4135
4136         ret = hns3_nic_init_vector_data(priv);
4137         if (ret)
4138                 goto err_uninit_vector;
4139
4140         ret = hns3_init_all_ring(priv);
4141         if (ret)
4142                 goto err_put_ring;
4143
4144         return 0;
4145
4146 err_put_ring:
4147         hns3_put_ring_config(priv);
4148 err_uninit_vector:
4149         hns3_nic_uninit_vector_data(priv);
4150 err_alloc_vector:
4151         hns3_nic_dealloc_vector_data(priv);
4152         return ret;
4153 }
4154
4155 static int hns3_adjust_tqps_num(u8 num_tc, u32 new_tqp_num)
4156 {
4157         return (new_tqp_num / num_tc) * num_tc;
4158 }
4159
4160 int hns3_set_channels(struct net_device *netdev,
4161                       struct ethtool_channels *ch)
4162 {
4163         struct hns3_nic_priv *priv = netdev_priv(netdev);
4164         struct hnae3_handle *h = hns3_get_handle(netdev);
4165         struct hnae3_knic_private_info *kinfo = &h->kinfo;
4166         bool if_running = netif_running(netdev);
4167         u32 new_tqp_num = ch->combined_count;
4168         u16 org_tqp_num;
4169         int ret;
4170
4171         if (ch->rx_count || ch->tx_count)
4172                 return -EINVAL;
4173
4174         if (new_tqp_num > hns3_get_max_available_channels(h) ||
4175             new_tqp_num < kinfo->num_tc) {
4176                 dev_err(&netdev->dev,
4177                         "Change tqps fail, the tqp range is from %d to %d",
4178                         kinfo->num_tc,
4179                         hns3_get_max_available_channels(h));
4180                 return -EINVAL;
4181         }
4182
4183         new_tqp_num = hns3_adjust_tqps_num(kinfo->num_tc, new_tqp_num);
4184         if (kinfo->num_tqps == new_tqp_num)
4185                 return 0;
4186
4187         if (if_running)
4188                 hns3_nic_net_stop(netdev);
4189
4190         ret = hns3_nic_uninit_vector_data(priv);
4191         if (ret) {
4192                 dev_err(&netdev->dev,
4193                         "Unbind vector with tqp fail, nothing is changed");
4194                 goto open_netdev;
4195         }
4196
4197         hns3_store_coal(priv);
4198
4199         hns3_nic_dealloc_vector_data(priv);
4200
4201         hns3_uninit_all_ring(priv);
4202         hns3_put_ring_config(priv);
4203
4204         org_tqp_num = h->kinfo.num_tqps;
4205         ret = hns3_modify_tqp_num(netdev, new_tqp_num);
4206         if (ret) {
4207                 ret = hns3_modify_tqp_num(netdev, org_tqp_num);
4208                 if (ret) {
4209                         /* If revert to old tqp failed, fatal error occurred */
4210                         dev_err(&netdev->dev,
4211                                 "Revert to old tqp num fail, ret=%d", ret);
4212                         return ret;
4213                 }
4214                 dev_info(&netdev->dev,
4215                          "Change tqp num fail, Revert to old tqp num");
4216         }
4217
4218 open_netdev:
4219         if (if_running)
4220                 hns3_nic_net_open(netdev);
4221
4222         return ret;
4223 }
4224
4225 static const struct hnae3_client_ops client_ops = {
4226         .init_instance = hns3_client_init,
4227         .uninit_instance = hns3_client_uninit,
4228         .link_status_change = hns3_link_status_change,
4229         .setup_tc = hns3_client_setup_tc,
4230         .reset_notify = hns3_reset_notify,
4231 };
4232
4233 /* hns3_init_module - Driver registration routine
4234  * hns3_init_module is the first routine called when the driver is
4235  * loaded. All it does is register with the PCI subsystem.
4236  */
4237 static int __init hns3_init_module(void)
4238 {
4239         int ret;
4240
4241         pr_info("%s: %s - version\n", hns3_driver_name, hns3_driver_string);
4242         pr_info("%s: %s\n", hns3_driver_name, hns3_copyright);
4243
4244         client.type = HNAE3_CLIENT_KNIC;
4245         snprintf(client.name, HNAE3_CLIENT_NAME_LENGTH - 1, "%s",
4246                  hns3_driver_name);
4247
4248         client.ops = &client_ops;
4249
4250         INIT_LIST_HEAD(&client.node);
4251
4252         hns3_dbg_register_debugfs(hns3_driver_name);
4253
4254         ret = hnae3_register_client(&client);
4255         if (ret)
4256                 goto err_reg_client;
4257
4258         ret = pci_register_driver(&hns3_driver);
4259         if (ret)
4260                 goto err_reg_driver;
4261
4262         return ret;
4263
4264 err_reg_driver:
4265         hnae3_unregister_client(&client);
4266 err_reg_client:
4267         hns3_dbg_unregister_debugfs();
4268         return ret;
4269 }
4270 module_init(hns3_init_module);
4271
4272 /* hns3_exit_module - Driver exit cleanup routine
4273  * hns3_exit_module is called just before the driver is removed
4274  * from memory.
4275  */
4276 static void __exit hns3_exit_module(void)
4277 {
4278         pci_unregister_driver(&hns3_driver);
4279         hnae3_unregister_client(&client);
4280         hns3_dbg_unregister_debugfs();
4281 }
4282 module_exit(hns3_exit_module);
4283
4284 MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver");
4285 MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
4286 MODULE_LICENSE("GPL");
4287 MODULE_ALIAS("pci:hns-nic");
4288 MODULE_VERSION(HNS3_MOD_VERSION);