drivers/net/netvsc/hn_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2018 Microsoft Corporation
   3  * Copyright(c) 2013-2016 Brocade Communications Systems, Inc.
   4  * All rights reserved.
   5  */
   6
   7 #include <stdint.h>
   8 #include <string.h>
   9 #include <stdio.h>
  10 #include <errno.h>
  11 #include <unistd.h>
  12
  13 #include <rte_ethdev.h>
  14 #include <rte_memcpy.h>
  15 #include <rte_string_fns.h>
  16 #include <rte_memzone.h>
  17 #include <rte_malloc.h>
  18 #include <rte_atomic.h>
  19 #include <rte_branch_prediction.h>
  20 #include <rte_ether.h>
  21 #include <rte_ethdev_driver.h>
  22 #include <rte_cycles.h>
  23 #include <rte_errno.h>
  24 #include <rte_memory.h>
  25 #include <rte_eal.h>
  26 #include <rte_dev.h>
  27 #include <rte_bus_vmbus.h>
  28
  29 #include "hn_logs.h"
  30 #include "hn_var.h"
  31 #include "hn_rndis.h"
  32 #include "hn_nvs.h"
  33 #include "ndis.h"
  34
  35 #define HN_TX_OFFLOAD_CAPS (DEV_TX_OFFLOAD_IPV4_CKSUM | \
  36                             DEV_TX_OFFLOAD_TCP_CKSUM  | \
  37                             DEV_TX_OFFLOAD_UDP_CKSUM  | \
  38                             DEV_TX_OFFLOAD_TCP_TSO    | \
  39                             DEV_TX_OFFLOAD_MULTI_SEGS | \
  40                             DEV_TX_OFFLOAD_VLAN_INSERT)
  41
  42 #define HN_RX_OFFLOAD_CAPS (DEV_RX_OFFLOAD_CHECKSUM | \
  43                             DEV_RX_OFFLOAD_VLAN_STRIP | \
  44                             DEV_RX_OFFLOAD_CRC_STRIP)
  45
  46 int hn_logtype_init;
  47 int hn_logtype_driver;
  48
  49 struct hn_xstats_name_off {
  50         char name[RTE_ETH_XSTATS_NAME_SIZE];
  51         unsigned int offset;
  52 };
  53
  54 static const struct hn_xstats_name_off hn_stat_strings[] = {
  55         { "good_packets",           offsetof(struct hn_stats, packets) },
  56         { "good_bytes",             offsetof(struct hn_stats, bytes) },
  57         { "errors",                 offsetof(struct hn_stats, errors) },
  58         { "allocation_failed",      offsetof(struct hn_stats, nomemory) },
  59         { "multicast_packets",      offsetof(struct hn_stats, multicast) },
  60         { "broadcast_packets",      offsetof(struct hn_stats, broadcast) },
  61         { "undersize_packets",      offsetof(struct hn_stats, size_bins[0]) },
  62         { "size_64_packets",        offsetof(struct hn_stats, size_bins[1]) },
  63         { "size_65_127_packets",    offsetof(struct hn_stats, size_bins[2]) },
  64         { "size_128_255_packets",   offsetof(struct hn_stats, size_bins[3]) },
  65         { "size_256_511_packets",   offsetof(struct hn_stats, size_bins[4]) },
  66         { "size_512_1023_packets",  offsetof(struct hn_stats, size_bins[5]) },
  67         { "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) },
  68         { "size_1519_max_packets",  offsetof(struct hn_stats, size_bins[7]) },
  69 };
  70
  71 static struct rte_eth_dev *
  72 eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
  73 {
  74         struct rte_eth_dev *eth_dev;
  75         const char *name;
  76
  77         if (!dev)
  78                 return NULL;
  79
  80         name = dev->device.name;
  81
  82         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  83                 eth_dev = rte_eth_dev_allocate(name);
  84                 if (!eth_dev) {
  85                         PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
  86                         return NULL;
  87                 }
  88
  89                 if (private_data_size) {
  90                         eth_dev->data->dev_private =
  91                                 rte_zmalloc_socket(name, private_data_size,
  92                                                      RTE_CACHE_LINE_SIZE, dev->device.numa_node);
  93                         if (!eth_dev->data->dev_private) {
  94                                 PMD_DRV_LOG(NOTICE, "can not allocate driver data");
  95                                 rte_eth_dev_release_port(eth_dev);
  96                                 return NULL;
  97                         }
  98                 }
  99         } else {
 100                 eth_dev = rte_eth_dev_attach_secondary(name);
 101                 if (!eth_dev) {
 102                         PMD_DRV_LOG(NOTICE, "can not attach secondary");
 103                         return NULL;
 104                 }
 105         }
 106
 107         eth_dev->device = &dev->device;
 108         eth_dev->intr_handle = &dev->intr_handle;
 109
 110         return eth_dev;
 111 }
 112
 113 static void
 114 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
 115 {
 116         /* free ether device */
 117         rte_eth_dev_release_port(eth_dev);
 118
 119         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 120                 rte_free(eth_dev->data->dev_private);
 121
 122         eth_dev->data->dev_private = NULL;
 123
 124         /*
 125          * Secondary process will check the name to attach.
 126          * Clear this field to avoid attaching a released ports.
 127          */
 128         eth_dev->data->name[0] = '\0';
 129
 130         eth_dev->device = NULL;
 131         eth_dev->intr_handle = NULL;
 132 }
 133
 134 /* Update link status.
 135  * Note: the DPDK definition of "wait_to_complete"
 136  *   means block this call until link is up.
 137  *   which is not worth supporting.
 138  */
 139 static int
 140 hn_dev_link_update(struct rte_eth_dev *dev,
 141                    __rte_unused int wait_to_complete)
 142 {
 143         struct hn_data *hv = dev->data->dev_private;
 144         struct rte_eth_link link, old;
 145         int error;
 146
 147         old = dev->data->dev_link;
 148
 149         error = hn_rndis_get_linkstatus(hv);
 150         if (error)
 151                 return error;
 152
 153         hn_rndis_get_linkspeed(hv);
 154
 155         link = (struct rte_eth_link) {
 156                 .link_duplex = ETH_LINK_FULL_DUPLEX,
 157                 .link_autoneg = ETH_LINK_SPEED_FIXED,
 158                 .link_speed = hv->link_speed / 10000,
 159         };
 160
 161         if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
 162                 link.link_status = ETH_LINK_UP;
 163         else
 164                 link.link_status = ETH_LINK_DOWN;
 165
 166         if (old.link_status == link.link_status)
 167                 return 0;
 168
 169         PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
 170                      (link.link_status == ETH_LINK_UP) ? "up" : "down");
 171
 172         return rte_eth_linkstatus_set(dev, &link);
 173 }
 174
 175 static void hn_dev_info_get(struct rte_eth_dev *dev,
 176                             struct rte_eth_dev_info *dev_info)
 177 {
 178         struct hn_data *hv = dev->data->dev_private;
 179
 180         dev_info->speed_capa = ETH_LINK_SPEED_10G;
 181         dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
 182         dev_info->max_rx_pktlen  = HN_MAX_XFER_LEN;
 183         dev_info->max_mac_addrs  = 1;
 184
 185         dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
 186         dev_info->flow_type_rss_offloads =
 187                 ETH_RSS_IPV4 | ETH_RSS_IPV6 | ETH_RSS_TCP | ETH_RSS_UDP;
 188
 189         dev_info->max_rx_queues = hv->max_queues;
 190         dev_info->max_tx_queues = hv->max_queues;
 191
 192         hn_rndis_get_offload(hv, dev_info);
 193 }
 194
 195 static void
 196 hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
 197 {
 198         struct hn_data *hv = dev->data->dev_private;
 199
 200         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
 201 }
 202
 203 static void
 204 hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
 205 {
 206         struct hn_data *hv = dev->data->dev_private;
 207         uint32_t filter;
 208
 209         filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
 210         if (dev->data->all_multicast)
 211                 filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
 212         hn_rndis_set_rxfilter(hv, filter);
 213 }
 214
 215 static void
 216 hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
 217 {
 218         struct hn_data *hv = dev->data->dev_private;
 219
 220         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 221                               NDIS_PACKET_TYPE_ALL_MULTICAST |
 222                         NDIS_PACKET_TYPE_BROADCAST);
 223 }
 224
 225 static void
 226 hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
 227 {
 228         struct hn_data *hv = dev->data->dev_private;
 229
 230         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 231                              NDIS_PACKET_TYPE_BROADCAST);
 232 }
 233
 234 /* Setup shared rx/tx queue data */
 235 static int hn_subchan_configure(struct hn_data *hv,
 236                                 uint32_t subchan)
 237 {
 238         struct vmbus_channel *primary = hn_primary_chan(hv);
 239         int err;
 240         unsigned int retry = 0;
 241
 242         PMD_DRV_LOG(DEBUG,
 243                     "open %u subchannels", subchan);
 244
 245         /* Send create sub channels command */
 246         err = hn_nvs_alloc_subchans(hv, &subchan);
 247         if (err)
 248                 return  err;
 249
 250         while (subchan > 0) {
 251                 struct vmbus_channel *new_sc;
 252                 uint16_t chn_index;
 253
 254                 err = rte_vmbus_subchan_open(primary, &new_sc);
 255                 if (err == -ENOENT && ++retry < 1000) {
 256                         /* This can happen if not ready yet */
 257                         rte_delay_ms(10);
 258                         continue;
 259                 }
 260
 261                 if (err) {
 262                         PMD_DRV_LOG(ERR,
 263                                     "open subchannel failed: %d", err);
 264                         return err;
 265                 }
 266
 267                 rte_vmbus_set_latency(hv->vmbus, new_sc,
 268                                       HN_CHAN_LATENCY_NS);
 269
 270                 retry = 0;
 271                 chn_index = rte_vmbus_sub_channel_index(new_sc);
 272                 if (chn_index == 0 || chn_index > hv->max_queues) {
 273                         PMD_DRV_LOG(ERR,
 274                                     "Invalid subchannel offermsg channel %u",
 275                                     chn_index);
 276                         return -EIO;
 277                 }
 278
 279                 PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
 280                 hv->channels[chn_index] = new_sc;
 281                 --subchan;
 282         }
 283
 284         return err;
 285 }
 286
 287 static int hn_dev_configure(struct rte_eth_dev *dev)
 288 {
 289         const struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
 290         const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
 291         const struct rte_eth_txmode *txmode = &dev_conf->txmode;
 292
 293         const struct rte_eth_rss_conf *rss_conf =
 294                 &dev_conf->rx_adv_conf.rss_conf;
 295         struct hn_data *hv = dev->data->dev_private;
 296         uint64_t unsupported;
 297         int err, subchan;
 298
 299         PMD_INIT_FUNC_TRACE();
 300
 301         unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
 302         if (unsupported) {
 303                 PMD_DRV_LOG(NOTICE,
 304                             "unsupported TX offload: %#" PRIx64,
 305                             unsupported);
 306                 return -EINVAL;
 307         }
 308
 309         unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
 310         if (unsupported) {
 311                 PMD_DRV_LOG(NOTICE,
 312                             "unsupported RX offload: %#" PRIx64,
 313                             rxmode->offloads);
 314                 return -EINVAL;
 315         }
 316
 317         err = hn_rndis_conf_offload(hv, txmode->offloads,
 318                                     rxmode->offloads);
 319         if (err) {
 320                 PMD_DRV_LOG(NOTICE,
 321                             "offload configure failed");
 322                 return err;
 323         }
 324
 325         hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
 326                                  dev->data->nb_tx_queues);
 327         subchan = hv->num_queues - 1;
 328         if (subchan > 0) {
 329                 err = hn_subchan_configure(hv, subchan);
 330                 if (err) {
 331                         PMD_DRV_LOG(NOTICE,
 332                                     "subchannel configuration failed");
 333                         return err;
 334                 }
 335
 336                 err = hn_rndis_conf_rss(hv, rss_conf);
 337                 if (err) {
 338                         PMD_DRV_LOG(NOTICE,
 339                                     "rss configuration failed");
 340                         return err;
 341                 }
 342         }
 343
 344         return 0;
 345 }
 346
 347 static int hn_dev_stats_get(struct rte_eth_dev *dev,
 348                             struct rte_eth_stats *stats)
 349 {
 350         unsigned int i;
 351
 352         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 353                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 354
 355                 if (!txq)
 356                         continue;
 357
 358                 stats->opackets += txq->stats.packets;
 359                 stats->obytes += txq->stats.bytes;
 360                 stats->oerrors += txq->stats.errors + txq->stats.nomemory;
 361
 362                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 363                         stats->q_opackets[i] = txq->stats.packets;
 364                         stats->q_obytes[i] = txq->stats.bytes;
 365                 }
 366         }
 367
 368         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 369                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 370
 371                 if (!rxq)
 372                         continue;
 373
 374                 stats->ipackets += rxq->stats.packets;
 375                 stats->ibytes += rxq->stats.bytes;
 376                 stats->ierrors += rxq->stats.errors;
 377                 stats->imissed += rxq->ring_full;
 378
 379                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 380                         stats->q_ipackets[i] = rxq->stats.packets;
 381                         stats->q_ibytes[i] = rxq->stats.bytes;
 382                 }
 383         }
 384
 385         stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
 386         return 0;
 387 }
 388
 389 static void
 390 hn_dev_stats_reset(struct rte_eth_dev *dev)
 391 {
 392         unsigned int i;
 393
 394         PMD_INIT_FUNC_TRACE();
 395
 396         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 397                 struct hn_tx_queue *txq = dev->data->tx_queues[i];
 398
 399                 if (!txq)
 400                         continue;
 401                 memset(&txq->stats, 0, sizeof(struct hn_stats));
 402         }
 403
 404         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 405                 struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 406
 407                 if (!rxq)
 408                         continue;
 409
 410                 memset(&rxq->stats, 0, sizeof(struct hn_stats));
 411                 rxq->ring_full = 0;
 412         }
 413 }
 414
 415 static int
 416 hn_dev_xstats_get_names(struct rte_eth_dev *dev,
 417                         struct rte_eth_xstat_name *xstats_names,
 418                         __rte_unused unsigned int limit)
 419 {
 420         unsigned int i, t, count = 0;
 421
 422         PMD_INIT_FUNC_TRACE();
 423
 424         if (!xstats_names)
 425                 return dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings)
 426                         + dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
 427
 428         /* Note: limit checked in rte_eth_xstats_names() */
 429         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 430                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 431
 432                 if (!txq)
 433                         continue;
 434
 435                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 436                         snprintf(xstats_names[count++].name,
 437                                  RTE_ETH_XSTATS_NAME_SIZE,
 438                                  "tx_q%u_%s", i, hn_stat_strings[t].name);
 439         }
 440
 441         for (i = 0; i < dev->data->nb_rx_queues; i++)  {
 442                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 443
 444                 if (!rxq)
 445                         continue;
 446
 447                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 448                         snprintf(xstats_names[count++].name,
 449                                  RTE_ETH_XSTATS_NAME_SIZE,
 450                                  "rx_q%u_%s", i,
 451                                  hn_stat_strings[t].name);
 452         }
 453
 454         return count;
 455 }
 456
 457 static int
 458 hn_dev_xstats_get(struct rte_eth_dev *dev,
 459                   struct rte_eth_xstat *xstats,
 460                   unsigned int n)
 461 {
 462         unsigned int i, t, count = 0;
 463
 464         const unsigned int nstats =
 465                 dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings)
 466                 + dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
 467         const char *stats;
 468
 469         PMD_INIT_FUNC_TRACE();
 470
 471         if (n < nstats)
 472                 return nstats;
 473
 474         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 475                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 476
 477                 if (!txq)
 478                         continue;
 479
 480                 stats = (const char *)&txq->stats;
 481                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 482                         xstats[count++].value = *(const uint64_t *)
 483                                 (stats + hn_stat_strings[t].offset);
 484         }
 485
 486         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 487                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 488
 489                 if (!rxq)
 490                         continue;
 491
 492                 stats = (const char *)&rxq->stats;
 493                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 494                         xstats[count++].value = *(const uint64_t *)
 495                                 (stats + hn_stat_strings[t].offset);
 496         }
 497
 498         return count;
 499 }
 500
 501 static int
 502 hn_dev_start(struct rte_eth_dev *dev)
 503 {
 504         struct hn_data *hv = dev->data->dev_private;
 505
 506         PMD_INIT_FUNC_TRACE();
 507
 508         /* check if lsc interrupt feature is enabled */
 509         if (dev->data->dev_conf.intr_conf.lsc) {
 510                 PMD_DRV_LOG(ERR, "link status not supported yet");
 511                 return -ENOTSUP;
 512         }
 513
 514         return hn_rndis_set_rxfilter(hv,
 515                                      NDIS_PACKET_TYPE_BROADCAST |
 516                                      NDIS_PACKET_TYPE_ALL_MULTICAST |
 517                                      NDIS_PACKET_TYPE_DIRECTED);
 518 }
 519
 520 static void
 521 hn_dev_stop(struct rte_eth_dev *dev)
 522 {
 523         struct hn_data *hv = dev->data->dev_private;
 524
 525         PMD_INIT_FUNC_TRACE();
 526
 527         hn_rndis_set_rxfilter(hv, 0);
 528 }
 529
 530 static void
 531 hn_dev_close(struct rte_eth_dev *dev __rte_unused)
 532 {
 533         PMD_INIT_LOG(DEBUG, "close");
 534 }
 535
 536 static const struct eth_dev_ops hn_eth_dev_ops = {
 537         .dev_configure          = hn_dev_configure,
 538         .dev_start              = hn_dev_start,
 539         .dev_stop               = hn_dev_stop,
 540         .dev_close              = hn_dev_close,
 541         .dev_infos_get          = hn_dev_info_get,
 542         .txq_info_get           = hn_dev_tx_queue_info,
 543         .rxq_info_get           = hn_dev_rx_queue_info,
 544         .promiscuous_enable     = hn_dev_promiscuous_enable,
 545         .promiscuous_disable    = hn_dev_promiscuous_disable,
 546         .allmulticast_enable    = hn_dev_allmulticast_enable,
 547         .allmulticast_disable   = hn_dev_allmulticast_disable,
 548         .tx_queue_setup         = hn_dev_tx_queue_setup,
 549         .tx_queue_release       = hn_dev_tx_queue_release,
 550         .tx_done_cleanup        = hn_dev_tx_done_cleanup,
 551         .rx_queue_setup         = hn_dev_rx_queue_setup,
 552         .rx_queue_release       = hn_dev_rx_queue_release,
 553         .link_update            = hn_dev_link_update,
 554         .stats_get              = hn_dev_stats_get,
 555         .xstats_get             = hn_dev_xstats_get,
 556         .xstats_get_names       = hn_dev_xstats_get_names,
 557         .stats_reset            = hn_dev_stats_reset,
 558         .xstats_reset           = hn_dev_stats_reset,
 559 };
 560
 561 /*
 562  * Setup connection between PMD and kernel.
 563  */
 564 static int
 565 hn_attach(struct hn_data *hv, unsigned int mtu)
 566 {
 567         int error;
 568
 569         /* Attach NVS */
 570         error = hn_nvs_attach(hv, mtu);
 571         if (error)
 572                 goto failed_nvs;
 573
 574         /* Attach RNDIS */
 575         error = hn_rndis_attach(hv);
 576         if (error)
 577                 goto failed_rndis;
 578
 579         /*
 580          * NOTE:
 581          * Under certain conditions on certain versions of Hyper-V,
 582          * the RNDIS rxfilter is _not_ zero on the hypervisor side
 583          * after the successful RNDIS initialization.
 584          */
 585         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
 586         return 0;
 587 failed_rndis:
 588         hn_nvs_detach(hv);
 589 failed_nvs:
 590         return error;
 591 }
 592
 593 static void
 594 hn_detach(struct hn_data *hv)
 595 {
 596         hn_nvs_detach(hv);
 597         hn_rndis_detach(hv);
 598 }
 599
 600 static int
 601 eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 602 {
 603         struct hn_data *hv = eth_dev->data->dev_private;
 604         struct rte_device *device = eth_dev->device;
 605         struct rte_vmbus_device *vmbus;
 606         unsigned int rxr_cnt;
 607         int err, max_chan;
 608
 609         PMD_INIT_FUNC_TRACE();
 610
 611         vmbus = container_of(device, struct rte_vmbus_device, device);
 612         eth_dev->dev_ops = &hn_eth_dev_ops;
 613         eth_dev->tx_pkt_burst = &hn_xmit_pkts;
 614         eth_dev->rx_pkt_burst = &hn_recv_pkts;
 615
 616         /*
 617          * for secondary processes, we don't initialize any further as primary
 618          * has already done this work.
 619          */
 620         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 621                 return 0;
 622
 623         /* Since Hyper-V only supports one MAC address, just use local data */
 624         eth_dev->data->mac_addrs = &hv->mac_addr;
 625
 626         hv->vmbus = vmbus;
 627         hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
 628         hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];
 629         hv->port_id = eth_dev->data->port_id;
 630
 631         /* Initialize primary channel input for control operations */
 632         err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
 633         if (err)
 634                 return err;
 635
 636         rte_vmbus_set_latency(hv->vmbus, hv->channels[0],
 637                               HN_CHAN_LATENCY_NS);
 638
 639         hv->primary = hn_rx_queue_alloc(hv, 0,
 640                                         eth_dev->device->numa_node);
 641
 642         if (!hv->primary)
 643                 return -ENOMEM;
 644
 645         err = hn_attach(hv, ETHER_MTU);
 646         if  (err)
 647                 goto failed;
 648
 649         err = hn_tx_pool_init(eth_dev);
 650         if (err)
 651                 goto failed;
 652
 653         err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes);
 654         if (err)
 655                 goto failed;
 656
 657         max_chan = rte_vmbus_max_channels(vmbus);
 658         PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
 659         if (max_chan <= 0)
 660                 goto failed;
 661
 662         if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
 663                 rxr_cnt = 1;
 664
 665         hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
 666
 667         return 0;
 668
 669 failed:
 670         PMD_INIT_LOG(NOTICE, "device init failed");
 671
 672         hn_detach(hv);
 673         return err;
 674 }
 675
 676 static int
 677 eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
 678 {
 679         struct hn_data *hv = eth_dev->data->dev_private;
 680
 681         PMD_INIT_FUNC_TRACE();
 682
 683         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 684                 return 0;
 685
 686         hn_dev_stop(eth_dev);
 687         hn_dev_close(eth_dev);
 688
 689         eth_dev->dev_ops = NULL;
 690         eth_dev->tx_pkt_burst = NULL;
 691         eth_dev->rx_pkt_burst = NULL;
 692
 693         hn_detach(hv);
 694         rte_vmbus_chan_close(hv->primary->chan);
 695         rte_free(hv->primary);
 696
 697         eth_dev->data->mac_addrs = NULL;
 698
 699         return 0;
 700 }
 701
 702 static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
 703                         struct rte_vmbus_device *dev)
 704 {
 705         struct rte_eth_dev *eth_dev;
 706         int ret;
 707
 708         PMD_INIT_FUNC_TRACE();
 709
 710         eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
 711         if (!eth_dev)
 712                 return -ENOMEM;
 713
 714         ret = eth_hn_dev_init(eth_dev);
 715         if (ret)
 716                 eth_dev_vmbus_release(eth_dev);
 717         else
 718                 rte_eth_dev_probing_finish(eth_dev);
 719
 720         return ret;
 721 }
 722
 723 static int eth_hn_remove(struct rte_vmbus_device *dev)
 724 {
 725         struct rte_eth_dev *eth_dev;
 726         int ret;
 727
 728         PMD_INIT_FUNC_TRACE();
 729
 730         eth_dev = rte_eth_dev_allocated(dev->device.name);
 731         if (!eth_dev)
 732                 return -ENODEV;
 733
 734         ret = eth_hn_dev_uninit(eth_dev);
 735         if (ret)
 736                 return ret;
 737
 738         eth_dev_vmbus_release(eth_dev);
 739         return 0;
 740 }
 741
 742 /* Network device GUID */
 743 static const rte_uuid_t hn_net_ids[] = {
 744         /*  f8615163-df3e-46c5-913f-f2d2f965ed0e */
 745         RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
 746         { 0 }
 747 };
 748
 749 static struct rte_vmbus_driver rte_netvsc_pmd = {
 750         .id_table = hn_net_ids,
 751         .probe = eth_hn_probe,
 752         .remove = eth_hn_remove,
 753 };
 754
 755 RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
 756 RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
 757
 758 RTE_INIT(hn_init_log);
 759 static void
 760 hn_init_log(void)
 761 {
 762         hn_logtype_init = rte_log_register("pmd.net.netvsc.init");
 763         if (hn_logtype_init >= 0)
 764                 rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE);
 765         hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver");
 766         if (hn_logtype_driver >= 0)
 767                 rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE);
 768 }