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_devargs.h>
  18 #include <rte_malloc.h>
  19 #include <rte_kvargs.h>
  20 #include <rte_atomic.h>
  21 #include <rte_branch_prediction.h>
  22 #include <rte_ether.h>
  23 #include <rte_ethdev_driver.h>
  24 #include <rte_cycles.h>
  25 #include <rte_errno.h>
  26 #include <rte_memory.h>
  27 #include <rte_eal.h>
  28 #include <rte_dev.h>
  29 #include <rte_bus_vmbus.h>
  30
  31 #include "hn_logs.h"
  32 #include "hn_var.h"
  33 #include "hn_rndis.h"
  34 #include "hn_nvs.h"
  35 #include "ndis.h"
  36
  37 #define HN_TX_OFFLOAD_CAPS (DEV_TX_OFFLOAD_IPV4_CKSUM | \
  38                             DEV_TX_OFFLOAD_TCP_CKSUM  | \
  39                             DEV_TX_OFFLOAD_UDP_CKSUM  | \
  40                             DEV_TX_OFFLOAD_TCP_TSO    | \
  41                             DEV_TX_OFFLOAD_MULTI_SEGS | \
  42                             DEV_TX_OFFLOAD_VLAN_INSERT)
  43
  44 #define HN_RX_OFFLOAD_CAPS (DEV_RX_OFFLOAD_CHECKSUM | \
  45                             DEV_RX_OFFLOAD_VLAN_STRIP)
  46
  47 int hn_logtype_init;
  48 int hn_logtype_driver;
  49
  50 struct hn_xstats_name_off {
  51         char name[RTE_ETH_XSTATS_NAME_SIZE];
  52         unsigned int offset;
  53 };
  54
  55 static const struct hn_xstats_name_off hn_stat_strings[] = {
  56         { "good_packets",           offsetof(struct hn_stats, packets) },
  57         { "good_bytes",             offsetof(struct hn_stats, bytes) },
  58         { "errors",                 offsetof(struct hn_stats, errors) },
  59         { "ring full",              offsetof(struct hn_stats, ring_full) },
  60         { "multicast_packets",      offsetof(struct hn_stats, multicast) },
  61         { "broadcast_packets",      offsetof(struct hn_stats, broadcast) },
  62         { "undersize_packets",      offsetof(struct hn_stats, size_bins[0]) },
  63         { "size_64_packets",        offsetof(struct hn_stats, size_bins[1]) },
  64         { "size_65_127_packets",    offsetof(struct hn_stats, size_bins[2]) },
  65         { "size_128_255_packets",   offsetof(struct hn_stats, size_bins[3]) },
  66         { "size_256_511_packets",   offsetof(struct hn_stats, size_bins[4]) },
  67         { "size_512_1023_packets",  offsetof(struct hn_stats, size_bins[5]) },
  68         { "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) },
  69         { "size_1519_max_packets",  offsetof(struct hn_stats, size_bins[7]) },
  70 };
  71
  72 static struct rte_eth_dev *
  73 eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
  74 {
  75         struct rte_eth_dev *eth_dev;
  76         const char *name;
  77
  78         if (!dev)
  79                 return NULL;
  80
  81         name = dev->device.name;
  82
  83         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  84                 eth_dev = rte_eth_dev_allocate(name);
  85                 if (!eth_dev) {
  86                         PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
  87                         return NULL;
  88                 }
  89
  90                 if (private_data_size) {
  91                         eth_dev->data->dev_private =
  92                                 rte_zmalloc_socket(name, private_data_size,
  93                                                      RTE_CACHE_LINE_SIZE, dev->device.numa_node);
  94                         if (!eth_dev->data->dev_private) {
  95                                 PMD_DRV_LOG(NOTICE, "can not allocate driver data");
  96                                 rte_eth_dev_release_port(eth_dev);
  97                                 return NULL;
  98                         }
  99                 }
 100         } else {
 101                 eth_dev = rte_eth_dev_attach_secondary(name);
 102                 if (!eth_dev) {
 103                         PMD_DRV_LOG(NOTICE, "can not attach secondary");
 104                         return NULL;
 105                 }
 106         }
 107
 108         eth_dev->device = &dev->device;
 109
 110         /* interrupt is simulated */
 111         dev->intr_handle.type = RTE_INTR_HANDLE_EXT;
 112         eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
 113         eth_dev->intr_handle = &dev->intr_handle;
 114
 115         return eth_dev;
 116 }
 117
 118 static void
 119 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
 120 {
 121         /* free ether device */
 122         rte_eth_dev_release_port(eth_dev);
 123
 124         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 125                 rte_free(eth_dev->data->dev_private);
 126
 127         eth_dev->data->dev_private = NULL;
 128
 129         /*
 130          * Secondary process will check the name to attach.
 131          * Clear this field to avoid attaching a released ports.
 132          */
 133         eth_dev->data->name[0] = '\0';
 134
 135         eth_dev->device = NULL;
 136         eth_dev->intr_handle = NULL;
 137 }
 138
 139 /* handle "latency=X" from devargs */
 140 static int hn_set_latency(const char *key, const char *value, void *opaque)
 141 {
 142         struct hn_data *hv = opaque;
 143         char *endp = NULL;
 144         unsigned long lat;
 145
 146         errno = 0;
 147         lat = strtoul(value, &endp, 0);
 148
 149         if (*value == '\0' || *endp != '\0') {
 150                 PMD_DRV_LOG(ERR, "invalid parameter %s=%s", key, value);
 151                 return -EINVAL;
 152         }
 153
 154         PMD_DRV_LOG(DEBUG, "set latency %lu usec", lat);
 155
 156         hv->latency = lat * 1000;       /* usec to nsec */
 157         return 0;
 158 }
 159
 160 /* Parse device arguments */
 161 static int hn_parse_args(const struct rte_eth_dev *dev)
 162 {
 163         struct hn_data *hv = dev->data->dev_private;
 164         struct rte_devargs *devargs = dev->device->devargs;
 165         static const char * const valid_keys[] = {
 166                 "latency",
 167                 NULL
 168         };
 169         struct rte_kvargs *kvlist;
 170         int ret;
 171
 172         if (!devargs)
 173                 return 0;
 174
 175         PMD_INIT_LOG(DEBUG, "device args %s %s",
 176                      devargs->name, devargs->args);
 177
 178         kvlist = rte_kvargs_parse(devargs->args, valid_keys);
 179         if (!kvlist) {
 180                 PMD_DRV_LOG(NOTICE, "invalid parameters");
 181                 return -EINVAL;
 182         }
 183
 184         ret = rte_kvargs_process(kvlist, "latency", hn_set_latency, hv);
 185         if (ret)
 186                 PMD_DRV_LOG(ERR, "Unable to process latency arg\n");
 187
 188         rte_kvargs_free(kvlist);
 189         return ret;
 190 }
 191
 192 /* Update link status.
 193  * Note: the DPDK definition of "wait_to_complete"
 194  *   means block this call until link is up.
 195  *   which is not worth supporting.
 196  */
 197 int
 198 hn_dev_link_update(struct rte_eth_dev *dev,
 199                    int wait_to_complete)
 200 {
 201         struct hn_data *hv = dev->data->dev_private;
 202         struct rte_eth_link link, old;
 203         int error;
 204
 205         old = dev->data->dev_link;
 206
 207         error = hn_rndis_get_linkstatus(hv);
 208         if (error)
 209                 return error;
 210
 211         hn_rndis_get_linkspeed(hv);
 212
 213         hn_vf_link_update(dev, wait_to_complete);
 214
 215         link = (struct rte_eth_link) {
 216                 .link_duplex = ETH_LINK_FULL_DUPLEX,
 217                 .link_autoneg = ETH_LINK_SPEED_FIXED,
 218                 .link_speed = hv->link_speed / 10000,
 219         };
 220
 221         if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
 222                 link.link_status = ETH_LINK_UP;
 223         else
 224                 link.link_status = ETH_LINK_DOWN;
 225
 226         if (old.link_status == link.link_status)
 227                 return 0;
 228
 229         PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
 230                      (link.link_status == ETH_LINK_UP) ? "up" : "down");
 231
 232         return rte_eth_linkstatus_set(dev, &link);
 233 }
 234
 235 static void hn_dev_info_get(struct rte_eth_dev *dev,
 236                             struct rte_eth_dev_info *dev_info)
 237 {
 238         struct hn_data *hv = dev->data->dev_private;
 239
 240         dev_info->speed_capa = ETH_LINK_SPEED_10G;
 241         dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
 242         dev_info->max_rx_pktlen  = HN_MAX_XFER_LEN;
 243         dev_info->max_mac_addrs  = 1;
 244
 245         dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
 246         dev_info->flow_type_rss_offloads =
 247                 ETH_RSS_IPV4 | ETH_RSS_IPV6 | ETH_RSS_TCP | ETH_RSS_UDP;
 248
 249         dev_info->max_rx_queues = hv->max_queues;
 250         dev_info->max_tx_queues = hv->max_queues;
 251
 252         hn_rndis_get_offload(hv, dev_info);
 253         hn_vf_info_get(hv, dev_info);
 254 }
 255
 256 static void
 257 hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
 258 {
 259         struct hn_data *hv = dev->data->dev_private;
 260
 261         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
 262         hn_vf_promiscuous_enable(dev);
 263 }
 264
 265 static void
 266 hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
 267 {
 268         struct hn_data *hv = dev->data->dev_private;
 269         uint32_t filter;
 270
 271         filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
 272         if (dev->data->all_multicast)
 273                 filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
 274         hn_rndis_set_rxfilter(hv, filter);
 275         hn_vf_promiscuous_disable(dev);
 276 }
 277
 278 static void
 279 hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
 280 {
 281         struct hn_data *hv = dev->data->dev_private;
 282
 283         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 284                               NDIS_PACKET_TYPE_ALL_MULTICAST |
 285                         NDIS_PACKET_TYPE_BROADCAST);
 286         hn_vf_allmulticast_enable(dev);
 287 }
 288
 289 static void
 290 hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
 291 {
 292         struct hn_data *hv = dev->data->dev_private;
 293
 294         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 295                              NDIS_PACKET_TYPE_BROADCAST);
 296         hn_vf_allmulticast_disable(dev);
 297 }
 298
 299 static int
 300 hn_dev_mc_addr_list(struct rte_eth_dev *dev,
 301                      struct rte_ether_addr *mc_addr_set,
 302                      uint32_t nb_mc_addr)
 303 {
 304         /* No filtering on the synthetic path, but can do it on VF */
 305         return hn_vf_mc_addr_list(dev, mc_addr_set, nb_mc_addr);
 306 }
 307
 308 /* Setup shared rx/tx queue data */
 309 static int hn_subchan_configure(struct hn_data *hv,
 310                                 uint32_t subchan)
 311 {
 312         struct vmbus_channel *primary = hn_primary_chan(hv);
 313         int err;
 314         unsigned int retry = 0;
 315
 316         PMD_DRV_LOG(DEBUG,
 317                     "open %u subchannels", subchan);
 318
 319         /* Send create sub channels command */
 320         err = hn_nvs_alloc_subchans(hv, &subchan);
 321         if (err)
 322                 return  err;
 323
 324         while (subchan > 0) {
 325                 struct vmbus_channel *new_sc;
 326                 uint16_t chn_index;
 327
 328                 err = rte_vmbus_subchan_open(primary, &new_sc);
 329                 if (err == -ENOENT && ++retry < 1000) {
 330                         /* This can happen if not ready yet */
 331                         rte_delay_ms(10);
 332                         continue;
 333                 }
 334
 335                 if (err) {
 336                         PMD_DRV_LOG(ERR,
 337                                     "open subchannel failed: %d", err);
 338                         return err;
 339                 }
 340
 341                 rte_vmbus_set_latency(hv->vmbus, new_sc, hv->latency);
 342
 343                 retry = 0;
 344                 chn_index = rte_vmbus_sub_channel_index(new_sc);
 345                 if (chn_index == 0 || chn_index > hv->max_queues) {
 346                         PMD_DRV_LOG(ERR,
 347                                     "Invalid subchannel offermsg channel %u",
 348                                     chn_index);
 349                         return -EIO;
 350                 }
 351
 352                 PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
 353                 hv->channels[chn_index] = new_sc;
 354                 --subchan;
 355         }
 356
 357         return err;
 358 }
 359
 360 static int hn_dev_configure(struct rte_eth_dev *dev)
 361 {
 362         const struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
 363         const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
 364         const struct rte_eth_txmode *txmode = &dev_conf->txmode;
 365
 366         const struct rte_eth_rss_conf *rss_conf =
 367                 &dev_conf->rx_adv_conf.rss_conf;
 368         struct hn_data *hv = dev->data->dev_private;
 369         uint64_t unsupported;
 370         int err, subchan;
 371
 372         PMD_INIT_FUNC_TRACE();
 373
 374         unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
 375         if (unsupported) {
 376                 PMD_DRV_LOG(NOTICE,
 377                             "unsupported TX offload: %#" PRIx64,
 378                             unsupported);
 379                 return -EINVAL;
 380         }
 381
 382         unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
 383         if (unsupported) {
 384                 PMD_DRV_LOG(NOTICE,
 385                             "unsupported RX offload: %#" PRIx64,
 386                             rxmode->offloads);
 387                 return -EINVAL;
 388         }
 389
 390         err = hn_rndis_conf_offload(hv, txmode->offloads,
 391                                     rxmode->offloads);
 392         if (err) {
 393                 PMD_DRV_LOG(NOTICE,
 394                             "offload configure failed");
 395                 return err;
 396         }
 397
 398         hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
 399                                  dev->data->nb_tx_queues);
 400         subchan = hv->num_queues - 1;
 401         if (subchan > 0) {
 402                 err = hn_subchan_configure(hv, subchan);
 403                 if (err) {
 404                         PMD_DRV_LOG(NOTICE,
 405                                     "subchannel configuration failed");
 406                         return err;
 407                 }
 408
 409                 err = hn_rndis_conf_rss(hv, rss_conf);
 410                 if (err) {
 411                         PMD_DRV_LOG(NOTICE,
 412                                     "rss configuration failed");
 413                         return err;
 414                 }
 415         }
 416
 417         return hn_vf_configure(dev, dev_conf);
 418 }
 419
 420 static int hn_dev_stats_get(struct rte_eth_dev *dev,
 421                             struct rte_eth_stats *stats)
 422 {
 423         unsigned int i;
 424
 425         hn_vf_stats_get(dev, stats);
 426
 427         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 428                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 429
 430                 if (!txq)
 431                         continue;
 432
 433                 stats->opackets += txq->stats.packets;
 434                 stats->obytes += txq->stats.bytes;
 435                 stats->oerrors += txq->stats.errors;
 436
 437                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 438                         stats->q_opackets[i] = txq->stats.packets;
 439                         stats->q_obytes[i] = txq->stats.bytes;
 440                 }
 441         }
 442
 443         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 444                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 445
 446                 if (!rxq)
 447                         continue;
 448
 449                 stats->ipackets += rxq->stats.packets;
 450                 stats->ibytes += rxq->stats.bytes;
 451                 stats->ierrors += rxq->stats.errors;
 452                 stats->imissed += rxq->stats.ring_full;
 453
 454                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 455                         stats->q_ipackets[i] = rxq->stats.packets;
 456                         stats->q_ibytes[i] = rxq->stats.bytes;
 457                 }
 458         }
 459
 460         stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
 461         return 0;
 462 }
 463
 464 static void
 465 hn_dev_stats_reset(struct rte_eth_dev *dev)
 466 {
 467         unsigned int i;
 468
 469         PMD_INIT_FUNC_TRACE();
 470
 471         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 472                 struct hn_tx_queue *txq = dev->data->tx_queues[i];
 473
 474                 if (!txq)
 475                         continue;
 476                 memset(&txq->stats, 0, sizeof(struct hn_stats));
 477         }
 478
 479         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 480                 struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 481
 482                 if (!rxq)
 483                         continue;
 484
 485                 memset(&rxq->stats, 0, sizeof(struct hn_stats));
 486         }
 487 }
 488
 489 static void
 490 hn_dev_xstats_reset(struct rte_eth_dev *dev)
 491 {
 492         hn_dev_stats_reset(dev);
 493         hn_vf_xstats_reset(dev);
 494 }
 495
 496 static int
 497 hn_dev_xstats_count(struct rte_eth_dev *dev)
 498 {
 499         int ret, count;
 500
 501         count = dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings);
 502         count += dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
 503
 504         ret = hn_vf_xstats_get_names(dev, NULL, 0);
 505         if (ret < 0)
 506                 return ret;
 507
 508         return count + ret;
 509 }
 510
 511 static int
 512 hn_dev_xstats_get_names(struct rte_eth_dev *dev,
 513                         struct rte_eth_xstat_name *xstats_names,
 514                         unsigned int limit)
 515 {
 516         unsigned int i, t, count = 0;
 517         int ret;
 518
 519         if (!xstats_names)
 520                 return hn_dev_xstats_count(dev);
 521
 522         /* Note: limit checked in rte_eth_xstats_names() */
 523         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 524                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 525
 526                 if (!txq)
 527                         continue;
 528
 529                 if (count >= limit)
 530                         break;
 531
 532                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 533                         snprintf(xstats_names[count++].name,
 534                                  RTE_ETH_XSTATS_NAME_SIZE,
 535                                  "tx_q%u_%s", i, hn_stat_strings[t].name);
 536         }
 537
 538         for (i = 0; i < dev->data->nb_rx_queues; i++)  {
 539                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 540
 541                 if (!rxq)
 542                         continue;
 543
 544                 if (count >= limit)
 545                         break;
 546
 547                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 548                         snprintf(xstats_names[count++].name,
 549                                  RTE_ETH_XSTATS_NAME_SIZE,
 550                                  "rx_q%u_%s", i,
 551                                  hn_stat_strings[t].name);
 552         }
 553
 554         ret = hn_vf_xstats_get_names(dev, xstats_names + count,
 555                                      limit - count);
 556         if (ret < 0)
 557                 return ret;
 558
 559         return count + ret;
 560 }
 561
 562 static int
 563 hn_dev_xstats_get(struct rte_eth_dev *dev,
 564                   struct rte_eth_xstat *xstats,
 565                   unsigned int n)
 566 {
 567         unsigned int i, t, count = 0;
 568         const unsigned int nstats = hn_dev_xstats_count(dev);
 569         const char *stats;
 570         int ret;
 571
 572         PMD_INIT_FUNC_TRACE();
 573
 574         if (n < nstats)
 575                 return nstats;
 576
 577         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 578                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 579
 580                 if (!txq)
 581                         continue;
 582
 583                 stats = (const char *)&txq->stats;
 584                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 585                         xstats[count++].value = *(const uint64_t *)
 586                                 (stats + hn_stat_strings[t].offset);
 587         }
 588
 589         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 590                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 591
 592                 if (!rxq)
 593                         continue;
 594
 595                 stats = (const char *)&rxq->stats;
 596                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 597                         xstats[count++].value = *(const uint64_t *)
 598                                 (stats + hn_stat_strings[t].offset);
 599         }
 600
 601         ret = hn_vf_xstats_get(dev, xstats + count, n - count);
 602         if (ret < 0)
 603                 return ret;
 604
 605         return count + ret;
 606 }
 607
 608 static int
 609 hn_dev_start(struct rte_eth_dev *dev)
 610 {
 611         struct hn_data *hv = dev->data->dev_private;
 612         int error;
 613
 614         PMD_INIT_FUNC_TRACE();
 615
 616         error = hn_rndis_set_rxfilter(hv,
 617                                       NDIS_PACKET_TYPE_BROADCAST |
 618                                       NDIS_PACKET_TYPE_ALL_MULTICAST |
 619                                       NDIS_PACKET_TYPE_DIRECTED);
 620         if (error)
 621                 return error;
 622
 623         error = hn_vf_start(dev);
 624         if (error)
 625                 hn_rndis_set_rxfilter(hv, 0);
 626
 627         return error;
 628 }
 629
 630 static void
 631 hn_dev_stop(struct rte_eth_dev *dev)
 632 {
 633         struct hn_data *hv = dev->data->dev_private;
 634
 635         PMD_INIT_FUNC_TRACE();
 636
 637         hn_rndis_set_rxfilter(hv, 0);
 638         hn_vf_stop(dev);
 639 }
 640
 641 static void
 642 hn_dev_close(struct rte_eth_dev *dev __rte_unused)
 643 {
 644         PMD_INIT_LOG(DEBUG, "close");
 645
 646         hn_vf_close(dev);
 647 }
 648
 649 static const struct eth_dev_ops hn_eth_dev_ops = {
 650         .dev_configure          = hn_dev_configure,
 651         .dev_start              = hn_dev_start,
 652         .dev_stop               = hn_dev_stop,
 653         .dev_close              = hn_dev_close,
 654         .dev_infos_get          = hn_dev_info_get,
 655         .dev_supported_ptypes_get = hn_vf_supported_ptypes,
 656         .promiscuous_enable     = hn_dev_promiscuous_enable,
 657         .promiscuous_disable    = hn_dev_promiscuous_disable,
 658         .allmulticast_enable    = hn_dev_allmulticast_enable,
 659         .allmulticast_disable   = hn_dev_allmulticast_disable,
 660         .set_mc_addr_list       = hn_dev_mc_addr_list,
 661         .tx_queue_setup         = hn_dev_tx_queue_setup,
 662         .tx_queue_release       = hn_dev_tx_queue_release,
 663         .tx_done_cleanup        = hn_dev_tx_done_cleanup,
 664         .rx_queue_setup         = hn_dev_rx_queue_setup,
 665         .rx_queue_release       = hn_dev_rx_queue_release,
 666         .link_update            = hn_dev_link_update,
 667         .stats_get              = hn_dev_stats_get,
 668         .stats_reset            = hn_dev_stats_reset,
 669         .xstats_get             = hn_dev_xstats_get,
 670         .xstats_get_names       = hn_dev_xstats_get_names,
 671         .xstats_reset           = hn_dev_xstats_reset,
 672 };
 673
 674 /*
 675  * Setup connection between PMD and kernel.
 676  */
 677 static int
 678 hn_attach(struct hn_data *hv, unsigned int mtu)
 679 {
 680         int error;
 681
 682         /* Attach NVS */
 683         error = hn_nvs_attach(hv, mtu);
 684         if (error)
 685                 goto failed_nvs;
 686
 687         /* Attach RNDIS */
 688         error = hn_rndis_attach(hv);
 689         if (error)
 690                 goto failed_rndis;
 691
 692         /*
 693          * NOTE:
 694          * Under certain conditions on certain versions of Hyper-V,
 695          * the RNDIS rxfilter is _not_ zero on the hypervisor side
 696          * after the successful RNDIS initialization.
 697          */
 698         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
 699         return 0;
 700 failed_rndis:
 701         hn_nvs_detach(hv);
 702 failed_nvs:
 703         return error;
 704 }
 705
 706 static void
 707 hn_detach(struct hn_data *hv)
 708 {
 709         hn_nvs_detach(hv);
 710         hn_rndis_detach(hv);
 711 }
 712
 713 static int
 714 eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 715 {
 716         struct hn_data *hv = eth_dev->data->dev_private;
 717         struct rte_device *device = eth_dev->device;
 718         struct rte_vmbus_device *vmbus;
 719         unsigned int rxr_cnt;
 720         int err, max_chan;
 721
 722         PMD_INIT_FUNC_TRACE();
 723
 724         vmbus = container_of(device, struct rte_vmbus_device, device);
 725         eth_dev->dev_ops = &hn_eth_dev_ops;
 726         eth_dev->tx_pkt_burst = &hn_xmit_pkts;
 727         eth_dev->rx_pkt_burst = &hn_recv_pkts;
 728
 729         /*
 730          * for secondary processes, we don't initialize any further as primary
 731          * has already done this work.
 732          */
 733         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 734                 return 0;
 735
 736         /* Since Hyper-V only supports one MAC address, just use local data */
 737         eth_dev->data->mac_addrs = &hv->mac_addr;
 738
 739         hv->vmbus = vmbus;
 740         hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
 741         hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];
 742         hv->port_id = eth_dev->data->port_id;
 743         hv->latency = HN_CHAN_LATENCY_NS;
 744
 745         err = hn_parse_args(eth_dev);
 746         if (err)
 747                 return err;
 748
 749         strlcpy(hv->owner.name, eth_dev->device->name,
 750                 RTE_ETH_MAX_OWNER_NAME_LEN);
 751         err = rte_eth_dev_owner_new(&hv->owner.id);
 752         if (err) {
 753                 PMD_INIT_LOG(ERR, "Can not get owner id");
 754                 return err;
 755         }
 756
 757         /* Initialize primary channel input for control operations */
 758         err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
 759         if (err)
 760                 return err;
 761
 762         rte_vmbus_set_latency(hv->vmbus, hv->channels[0], hv->latency);
 763
 764         hv->primary = hn_rx_queue_alloc(hv, 0,
 765                                         eth_dev->device->numa_node);
 766
 767         if (!hv->primary)
 768                 return -ENOMEM;
 769
 770         err = hn_attach(hv, ETHER_MTU);
 771         if  (err)
 772                 goto failed;
 773
 774         err = hn_tx_pool_init(eth_dev);
 775         if (err)
 776                 goto failed;
 777
 778         err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes);
 779         if (err)
 780                 goto failed;
 781
 782         max_chan = rte_vmbus_max_channels(vmbus);
 783         PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
 784         if (max_chan <= 0)
 785                 goto failed;
 786
 787         if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
 788                 rxr_cnt = 1;
 789
 790         hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
 791
 792         /* If VF was reported but not added, do it now */
 793         if (hv->vf_present && !hv->vf_dev) {
 794                 PMD_INIT_LOG(DEBUG, "Adding VF device");
 795
 796                 err = hn_vf_add(eth_dev, hv);
 797                 if (err)
 798                         goto failed;
 799         }
 800
 801         return 0;
 802
 803 failed:
 804         PMD_INIT_LOG(NOTICE, "device init failed");
 805
 806         hn_detach(hv);
 807         return err;
 808 }
 809
 810 static int
 811 eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
 812 {
 813         struct hn_data *hv = eth_dev->data->dev_private;
 814
 815         PMD_INIT_FUNC_TRACE();
 816
 817         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 818                 return 0;
 819
 820         hn_dev_stop(eth_dev);
 821         hn_dev_close(eth_dev);
 822
 823         eth_dev->dev_ops = NULL;
 824         eth_dev->tx_pkt_burst = NULL;
 825         eth_dev->rx_pkt_burst = NULL;
 826
 827         hn_detach(hv);
 828         rte_vmbus_chan_close(hv->primary->chan);
 829         rte_free(hv->primary);
 830         rte_eth_dev_owner_delete(hv->owner.id);
 831
 832         eth_dev->data->mac_addrs = NULL;
 833
 834         return 0;
 835 }
 836
 837 static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
 838                         struct rte_vmbus_device *dev)
 839 {
 840         struct rte_eth_dev *eth_dev;
 841         int ret;
 842
 843         PMD_INIT_FUNC_TRACE();
 844
 845         eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
 846         if (!eth_dev)
 847                 return -ENOMEM;
 848
 849         ret = eth_hn_dev_init(eth_dev);
 850         if (ret)
 851                 eth_dev_vmbus_release(eth_dev);
 852         else
 853                 rte_eth_dev_probing_finish(eth_dev);
 854
 855         return ret;
 856 }
 857
 858 static int eth_hn_remove(struct rte_vmbus_device *dev)
 859 {
 860         struct rte_eth_dev *eth_dev;
 861         int ret;
 862
 863         PMD_INIT_FUNC_TRACE();
 864
 865         eth_dev = rte_eth_dev_allocated(dev->device.name);
 866         if (!eth_dev)
 867                 return -ENODEV;
 868
 869         ret = eth_hn_dev_uninit(eth_dev);
 870         if (ret)
 871                 return ret;
 872
 873         eth_dev_vmbus_release(eth_dev);
 874         return 0;
 875 }
 876
 877 /* Network device GUID */
 878 static const rte_uuid_t hn_net_ids[] = {
 879         /*  f8615163-df3e-46c5-913f-f2d2f965ed0e */
 880         RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
 881         { 0 }
 882 };
 883
 884 static struct rte_vmbus_driver rte_netvsc_pmd = {
 885         .id_table = hn_net_ids,
 886         .probe = eth_hn_probe,
 887         .remove = eth_hn_remove,
 888 };
 889
 890 RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
 891 RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
 892
 893 RTE_INIT(hn_init_log);
 894 static void
 895 hn_init_log(void)
 896 {
 897         hn_logtype_init = rte_log_register("pmd.net.netvsc.init");
 898         if (hn_logtype_init >= 0)
 899                 rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE);
 900         hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver");
 901         if (hn_logtype_driver >= 0)
 902                 rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE);
 903 }