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                             DEV_RX_OFFLOAD_RSS_HASH)
  47
  48 struct hn_xstats_name_off {
  49         char name[RTE_ETH_XSTATS_NAME_SIZE];
  50         unsigned int offset;
  51 };
  52
  53 static const struct hn_xstats_name_off hn_stat_strings[] = {
  54         { "good_packets",           offsetof(struct hn_stats, packets) },
  55         { "good_bytes",             offsetof(struct hn_stats, bytes) },
  56         { "errors",                 offsetof(struct hn_stats, errors) },
  57         { "ring full",              offsetof(struct hn_stats, ring_full) },
  58         { "channel full",           offsetof(struct hn_stats, channel_full) },
  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 /* The default RSS key.
  72  * This value is the same as MLX5 so that flows will be
  73  * received on same path for both VF and synthetic NIC.
  74  */
  75 static const uint8_t rss_default_key[NDIS_HASH_KEYSIZE_TOEPLITZ] = {
  76         0x2c, 0xc6, 0x81, 0xd1, 0x5b, 0xdb, 0xf4, 0xf7,
  77         0xfc, 0xa2, 0x83, 0x19, 0xdb, 0x1a, 0x3e, 0x94,
  78         0x6b, 0x9e, 0x38, 0xd9, 0x2c, 0x9c, 0x03, 0xd1,
  79         0xad, 0x99, 0x44, 0xa7, 0xd9, 0x56, 0x3d, 0x59,
  80         0x06, 0x3c, 0x25, 0xf3, 0xfc, 0x1f, 0xdc, 0x2a,
  81 };
  82
  83 static struct rte_eth_dev *
  84 eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
  85 {
  86         struct rte_eth_dev *eth_dev;
  87         const char *name;
  88
  89         if (!dev)
  90                 return NULL;
  91
  92         name = dev->device.name;
  93
  94         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  95                 eth_dev = rte_eth_dev_allocate(name);
  96                 if (!eth_dev) {
  97                         PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
  98                         return NULL;
  99                 }
 100
 101                 if (private_data_size) {
 102                         eth_dev->data->dev_private =
 103                                 rte_zmalloc_socket(name, private_data_size,
 104                                                      RTE_CACHE_LINE_SIZE, dev->device.numa_node);
 105                         if (!eth_dev->data->dev_private) {
 106                                 PMD_DRV_LOG(NOTICE, "can not allocate driver data");
 107                                 rte_eth_dev_release_port(eth_dev);
 108                                 return NULL;
 109                         }
 110                 }
 111         } else {
 112                 eth_dev = rte_eth_dev_attach_secondary(name);
 113                 if (!eth_dev) {
 114                         PMD_DRV_LOG(NOTICE, "can not attach secondary");
 115                         return NULL;
 116                 }
 117         }
 118
 119         eth_dev->device = &dev->device;
 120
 121         /* interrupt is simulated */
 122         dev->intr_handle.type = RTE_INTR_HANDLE_EXT;
 123         eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
 124         eth_dev->intr_handle = &dev->intr_handle;
 125
 126         /* allow ethdev to remove on close */
 127         eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
 128
 129         return eth_dev;
 130 }
 131
 132 static void
 133 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
 134 {
 135         /* free ether device */
 136         rte_eth_dev_release_port(eth_dev);
 137
 138         eth_dev->device = NULL;
 139         eth_dev->intr_handle = NULL;
 140 }
 141
 142 /* handle "latency=X" from devargs */
 143 static int hn_set_latency(const char *key, const char *value, void *opaque)
 144 {
 145         struct hn_data *hv = opaque;
 146         char *endp = NULL;
 147         unsigned long lat;
 148
 149         errno = 0;
 150         lat = strtoul(value, &endp, 0);
 151
 152         if (*value == '\0' || *endp != '\0') {
 153                 PMD_DRV_LOG(ERR, "invalid parameter %s=%s", key, value);
 154                 return -EINVAL;
 155         }
 156
 157         PMD_DRV_LOG(DEBUG, "set latency %lu usec", lat);
 158
 159         hv->latency = lat * 1000;       /* usec to nsec */
 160         return 0;
 161 }
 162
 163 /* Parse device arguments */
 164 static int hn_parse_args(const struct rte_eth_dev *dev)
 165 {
 166         struct hn_data *hv = dev->data->dev_private;
 167         struct rte_devargs *devargs = dev->device->devargs;
 168         static const char * const valid_keys[] = {
 169                 "latency",
 170                 NULL
 171         };
 172         struct rte_kvargs *kvlist;
 173         int ret;
 174
 175         if (!devargs)
 176                 return 0;
 177
 178         PMD_INIT_LOG(DEBUG, "device args %s %s",
 179                      devargs->name, devargs->args);
 180
 181         kvlist = rte_kvargs_parse(devargs->args, valid_keys);
 182         if (!kvlist) {
 183                 PMD_DRV_LOG(NOTICE, "invalid parameters");
 184                 return -EINVAL;
 185         }
 186
 187         ret = rte_kvargs_process(kvlist, "latency", hn_set_latency, hv);
 188         if (ret)
 189                 PMD_DRV_LOG(ERR, "Unable to process latency arg\n");
 190
 191         rte_kvargs_free(kvlist);
 192         return ret;
 193 }
 194
 195 /* Update link status.
 196  * Note: the DPDK definition of "wait_to_complete"
 197  *   means block this call until link is up.
 198  *   which is not worth supporting.
 199  */
 200 int
 201 hn_dev_link_update(struct rte_eth_dev *dev,
 202                    int wait_to_complete __rte_unused)
 203 {
 204         struct hn_data *hv = dev->data->dev_private;
 205         struct rte_eth_link link, old;
 206         int error;
 207
 208         old = dev->data->dev_link;
 209
 210         error = hn_rndis_get_linkstatus(hv);
 211         if (error)
 212                 return error;
 213
 214         hn_rndis_get_linkspeed(hv);
 215
 216         link = (struct rte_eth_link) {
 217                 .link_duplex = ETH_LINK_FULL_DUPLEX,
 218                 .link_autoneg = ETH_LINK_SPEED_FIXED,
 219                 .link_speed = hv->link_speed / 10000,
 220         };
 221
 222         if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
 223                 link.link_status = ETH_LINK_UP;
 224         else
 225                 link.link_status = ETH_LINK_DOWN;
 226
 227         if (old.link_status == link.link_status)
 228                 return 0;
 229
 230         PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
 231                      (link.link_status == ETH_LINK_UP) ? "up" : "down");
 232
 233         return rte_eth_linkstatus_set(dev, &link);
 234 }
 235
 236 static int hn_dev_info_get(struct rte_eth_dev *dev,
 237                            struct rte_eth_dev_info *dev_info)
 238 {
 239         struct hn_data *hv = dev->data->dev_private;
 240         int rc;
 241
 242         dev_info->speed_capa = ETH_LINK_SPEED_10G;
 243         dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
 244         dev_info->max_rx_pktlen  = HN_MAX_XFER_LEN;
 245         dev_info->max_mac_addrs  = 1;
 246
 247         dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
 248         dev_info->flow_type_rss_offloads = hv->rss_offloads;
 249         dev_info->reta_size = ETH_RSS_RETA_SIZE_128;
 250
 251         dev_info->max_rx_queues = hv->max_queues;
 252         dev_info->max_tx_queues = hv->max_queues;
 253
 254         dev_info->tx_desc_lim.nb_min = 1;
 255         dev_info->tx_desc_lim.nb_max = 4096;
 256
 257         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 258                 return 0;
 259
 260         /* fills in rx and tx offload capability */
 261         rc = hn_rndis_get_offload(hv, dev_info);
 262         if (rc != 0)
 263                 return rc;
 264
 265         /* merges the offload and queues of vf */
 266         return hn_vf_info_get(hv, dev_info);
 267 }
 268
 269 static int hn_rss_reta_update(struct rte_eth_dev *dev,
 270                               struct rte_eth_rss_reta_entry64 *reta_conf,
 271                               uint16_t reta_size)
 272 {
 273         struct hn_data *hv = dev->data->dev_private;
 274         unsigned int i;
 275         int err;
 276
 277         PMD_INIT_FUNC_TRACE();
 278
 279         if (reta_size != NDIS_HASH_INDCNT) {
 280                 PMD_DRV_LOG(ERR, "Hash lookup table size does not match NDIS");
 281                 return -EINVAL;
 282         }
 283
 284         for (i = 0; i < NDIS_HASH_INDCNT; i++) {
 285                 uint16_t idx = i / RTE_RETA_GROUP_SIZE;
 286                 uint16_t shift = i % RTE_RETA_GROUP_SIZE;
 287                 uint64_t mask = (uint64_t)1 << shift;
 288
 289                 if (reta_conf[idx].mask & mask)
 290                         hv->rss_ind[i] = reta_conf[idx].reta[shift];
 291         }
 292
 293         err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
 294         if (err) {
 295                 PMD_DRV_LOG(NOTICE,
 296                         "rss disable failed");
 297                 return err;
 298         }
 299
 300         err = hn_rndis_conf_rss(hv, 0);
 301         if (err) {
 302                 PMD_DRV_LOG(NOTICE,
 303                             "reta reconfig failed");
 304                 return err;
 305         }
 306
 307         return hn_vf_reta_hash_update(dev, reta_conf, reta_size);
 308 }
 309
 310 static int hn_rss_reta_query(struct rte_eth_dev *dev,
 311                              struct rte_eth_rss_reta_entry64 *reta_conf,
 312                              uint16_t reta_size)
 313 {
 314         struct hn_data *hv = dev->data->dev_private;
 315         unsigned int i;
 316
 317         PMD_INIT_FUNC_TRACE();
 318
 319         if (reta_size != NDIS_HASH_INDCNT) {
 320                 PMD_DRV_LOG(ERR, "Hash lookup table size does not match NDIS");
 321                 return -EINVAL;
 322         }
 323
 324         for (i = 0; i < NDIS_HASH_INDCNT; i++) {
 325                 uint16_t idx = i / RTE_RETA_GROUP_SIZE;
 326                 uint16_t shift = i % RTE_RETA_GROUP_SIZE;
 327                 uint64_t mask = (uint64_t)1 << shift;
 328
 329                 if (reta_conf[idx].mask & mask)
 330                         reta_conf[idx].reta[shift] = hv->rss_ind[i];
 331         }
 332         return 0;
 333 }
 334
 335 static void hn_rss_hash_init(struct hn_data *hv,
 336                              const struct rte_eth_rss_conf *rss_conf)
 337 {
 338         /* Convert from DPDK RSS hash flags to NDIS hash flags */
 339         hv->rss_hash = NDIS_HASH_FUNCTION_TOEPLITZ;
 340
 341         if (rss_conf->rss_hf & ETH_RSS_IPV4)
 342                 hv->rss_hash |= NDIS_HASH_IPV4;
 343         if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
 344                 hv->rss_hash |= NDIS_HASH_TCP_IPV4;
 345         if (rss_conf->rss_hf & ETH_RSS_IPV6)
 346                 hv->rss_hash |=  NDIS_HASH_IPV6;
 347         if (rss_conf->rss_hf & ETH_RSS_IPV6_EX)
 348                 hv->rss_hash |=  NDIS_HASH_IPV6_EX;
 349         if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
 350                 hv->rss_hash |= NDIS_HASH_TCP_IPV6;
 351         if (rss_conf->rss_hf & ETH_RSS_IPV6_TCP_EX)
 352                 hv->rss_hash |= NDIS_HASH_TCP_IPV6_EX;
 353
 354         memcpy(hv->rss_key, rss_conf->rss_key ? : rss_default_key,
 355                NDIS_HASH_KEYSIZE_TOEPLITZ);
 356 }
 357
 358 static int hn_rss_hash_update(struct rte_eth_dev *dev,
 359                               struct rte_eth_rss_conf *rss_conf)
 360 {
 361         struct hn_data *hv = dev->data->dev_private;
 362         int err;
 363
 364         PMD_INIT_FUNC_TRACE();
 365
 366         err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
 367         if (err) {
 368                 PMD_DRV_LOG(NOTICE,
 369                             "rss disable failed");
 370                 return err;
 371         }
 372
 373         hn_rss_hash_init(hv, rss_conf);
 374
 375         if (rss_conf->rss_hf != 0) {
 376                 err = hn_rndis_conf_rss(hv, 0);
 377                 if (err) {
 378                         PMD_DRV_LOG(NOTICE,
 379                                     "rss reconfig failed (RSS disabled)");
 380                         return err;
 381                 }
 382         }
 383
 384         return hn_vf_rss_hash_update(dev, rss_conf);
 385 }
 386
 387 static int hn_rss_hash_conf_get(struct rte_eth_dev *dev,
 388                                 struct rte_eth_rss_conf *rss_conf)
 389 {
 390         struct hn_data *hv = dev->data->dev_private;
 391
 392         PMD_INIT_FUNC_TRACE();
 393
 394         if (hv->ndis_ver < NDIS_VERSION_6_20) {
 395                 PMD_DRV_LOG(DEBUG, "RSS not supported on this host");
 396                 return -EOPNOTSUPP;
 397         }
 398
 399         rss_conf->rss_key_len = NDIS_HASH_KEYSIZE_TOEPLITZ;
 400         if (rss_conf->rss_key)
 401                 memcpy(rss_conf->rss_key, hv->rss_key,
 402                        NDIS_HASH_KEYSIZE_TOEPLITZ);
 403
 404         rss_conf->rss_hf = 0;
 405         if (hv->rss_hash & NDIS_HASH_IPV4)
 406                 rss_conf->rss_hf |= ETH_RSS_IPV4;
 407
 408         if (hv->rss_hash & NDIS_HASH_TCP_IPV4)
 409                 rss_conf->rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP;
 410
 411         if (hv->rss_hash & NDIS_HASH_IPV6)
 412                 rss_conf->rss_hf |= ETH_RSS_IPV6;
 413
 414         if (hv->rss_hash & NDIS_HASH_IPV6_EX)
 415                 rss_conf->rss_hf |= ETH_RSS_IPV6_EX;
 416
 417         if (hv->rss_hash & NDIS_HASH_TCP_IPV6)
 418                 rss_conf->rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP;
 419
 420         if (hv->rss_hash & NDIS_HASH_TCP_IPV6_EX)
 421                 rss_conf->rss_hf |= ETH_RSS_IPV6_TCP_EX;
 422
 423         return 0;
 424 }
 425
 426 static int
 427 hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
 428 {
 429         struct hn_data *hv = dev->data->dev_private;
 430
 431         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
 432         return hn_vf_promiscuous_enable(dev);
 433 }
 434
 435 static int
 436 hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
 437 {
 438         struct hn_data *hv = dev->data->dev_private;
 439         uint32_t filter;
 440
 441         filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
 442         if (dev->data->all_multicast)
 443                 filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
 444         hn_rndis_set_rxfilter(hv, filter);
 445         return hn_vf_promiscuous_disable(dev);
 446 }
 447
 448 static int
 449 hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
 450 {
 451         struct hn_data *hv = dev->data->dev_private;
 452
 453         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 454                               NDIS_PACKET_TYPE_ALL_MULTICAST |
 455                         NDIS_PACKET_TYPE_BROADCAST);
 456         return hn_vf_allmulticast_enable(dev);
 457 }
 458
 459 static int
 460 hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
 461 {
 462         struct hn_data *hv = dev->data->dev_private;
 463
 464         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 465                              NDIS_PACKET_TYPE_BROADCAST);
 466         return hn_vf_allmulticast_disable(dev);
 467 }
 468
 469 static int
 470 hn_dev_mc_addr_list(struct rte_eth_dev *dev,
 471                      struct rte_ether_addr *mc_addr_set,
 472                      uint32_t nb_mc_addr)
 473 {
 474         /* No filtering on the synthetic path, but can do it on VF */
 475         return hn_vf_mc_addr_list(dev, mc_addr_set, nb_mc_addr);
 476 }
 477
 478 /* Setup shared rx/tx queue data */
 479 static int hn_subchan_configure(struct hn_data *hv,
 480                                 uint32_t subchan)
 481 {
 482         struct vmbus_channel *primary = hn_primary_chan(hv);
 483         int err;
 484         unsigned int retry = 0;
 485
 486         PMD_DRV_LOG(DEBUG,
 487                     "open %u subchannels", subchan);
 488
 489         /* Send create sub channels command */
 490         err = hn_nvs_alloc_subchans(hv, &subchan);
 491         if (err)
 492                 return  err;
 493
 494         while (subchan > 0) {
 495                 struct vmbus_channel *new_sc;
 496                 uint16_t chn_index;
 497
 498                 err = rte_vmbus_subchan_open(primary, &new_sc);
 499                 if (err == -ENOENT && ++retry < 1000) {
 500                         /* This can happen if not ready yet */
 501                         rte_delay_ms(10);
 502                         continue;
 503                 }
 504
 505                 if (err) {
 506                         PMD_DRV_LOG(ERR,
 507                                     "open subchannel failed: %d", err);
 508                         return err;
 509                 }
 510
 511                 rte_vmbus_set_latency(hv->vmbus, new_sc, hv->latency);
 512
 513                 retry = 0;
 514                 chn_index = rte_vmbus_sub_channel_index(new_sc);
 515                 if (chn_index == 0 || chn_index > hv->max_queues) {
 516                         PMD_DRV_LOG(ERR,
 517                                     "Invalid subchannel offermsg channel %u",
 518                                     chn_index);
 519                         return -EIO;
 520                 }
 521
 522                 PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
 523                 hv->channels[chn_index] = new_sc;
 524                 --subchan;
 525         }
 526
 527         return err;
 528 }
 529
 530 static int hn_dev_configure(struct rte_eth_dev *dev)
 531 {
 532         struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
 533         struct rte_eth_rss_conf *rss_conf = &dev_conf->rx_adv_conf.rss_conf;
 534         const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
 535         const struct rte_eth_txmode *txmode = &dev_conf->txmode;
 536         struct hn_data *hv = dev->data->dev_private;
 537         uint64_t unsupported;
 538         int i, err, subchan;
 539
 540         PMD_INIT_FUNC_TRACE();
 541
 542         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
 543                 dev_conf->rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 544
 545         unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
 546         if (unsupported) {
 547                 PMD_DRV_LOG(NOTICE,
 548                             "unsupported TX offload: %#" PRIx64,
 549                             unsupported);
 550                 return -EINVAL;
 551         }
 552
 553         unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
 554         if (unsupported) {
 555                 PMD_DRV_LOG(NOTICE,
 556                             "unsupported RX offload: %#" PRIx64,
 557                             rxmode->offloads);
 558                 return -EINVAL;
 559         }
 560
 561         hv->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
 562
 563         err = hn_rndis_conf_offload(hv, txmode->offloads,
 564                                     rxmode->offloads);
 565         if (err) {
 566                 PMD_DRV_LOG(NOTICE,
 567                             "offload configure failed");
 568                 return err;
 569         }
 570
 571         hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
 572                                  dev->data->nb_tx_queues);
 573
 574         for (i = 0; i < NDIS_HASH_INDCNT; i++)
 575                 hv->rss_ind[i] = i % dev->data->nb_rx_queues;
 576
 577         hn_rss_hash_init(hv, rss_conf);
 578
 579         subchan = hv->num_queues - 1;
 580         if (subchan > 0) {
 581                 err = hn_subchan_configure(hv, subchan);
 582                 if (err) {
 583                         PMD_DRV_LOG(NOTICE,
 584                                     "subchannel configuration failed");
 585                         return err;
 586                 }
 587
 588                 err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
 589                 if (err) {
 590                         PMD_DRV_LOG(NOTICE,
 591                                 "rss disable failed");
 592                         return err;
 593                 }
 594
 595                 if (rss_conf->rss_hf != 0) {
 596                         err = hn_rndis_conf_rss(hv, 0);
 597                         if (err) {
 598                                 PMD_DRV_LOG(NOTICE,
 599                                             "initial RSS config failed");
 600                                 return err;
 601                         }
 602                 }
 603         }
 604
 605         return hn_vf_configure(dev, dev_conf);
 606 }
 607
 608 static int hn_dev_stats_get(struct rte_eth_dev *dev,
 609                             struct rte_eth_stats *stats)
 610 {
 611         unsigned int i;
 612
 613         hn_vf_stats_get(dev, stats);
 614
 615         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 616                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 617
 618                 if (!txq)
 619                         continue;
 620
 621                 stats->opackets += txq->stats.packets;
 622                 stats->obytes += txq->stats.bytes;
 623                 stats->oerrors += txq->stats.errors;
 624
 625                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 626                         stats->q_opackets[i] = txq->stats.packets;
 627                         stats->q_obytes[i] = txq->stats.bytes;
 628                 }
 629         }
 630
 631         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 632                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 633
 634                 if (!rxq)
 635                         continue;
 636
 637                 stats->ipackets += rxq->stats.packets;
 638                 stats->ibytes += rxq->stats.bytes;
 639                 stats->ierrors += rxq->stats.errors;
 640                 stats->imissed += rxq->stats.ring_full;
 641
 642                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 643                         stats->q_ipackets[i] = rxq->stats.packets;
 644                         stats->q_ibytes[i] = rxq->stats.bytes;
 645                 }
 646         }
 647
 648         stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
 649         return 0;
 650 }
 651
 652 static int
 653 hn_dev_stats_reset(struct rte_eth_dev *dev)
 654 {
 655         unsigned int i;
 656
 657         PMD_INIT_FUNC_TRACE();
 658
 659         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 660                 struct hn_tx_queue *txq = dev->data->tx_queues[i];
 661
 662                 if (!txq)
 663                         continue;
 664                 memset(&txq->stats, 0, sizeof(struct hn_stats));
 665         }
 666
 667         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 668                 struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 669
 670                 if (!rxq)
 671                         continue;
 672
 673                 memset(&rxq->stats, 0, sizeof(struct hn_stats));
 674         }
 675
 676         return 0;
 677 }
 678
 679 static int
 680 hn_dev_xstats_reset(struct rte_eth_dev *dev)
 681 {
 682         int ret;
 683
 684         ret = hn_dev_stats_reset(dev);
 685         if (ret != 0)
 686                 return 0;
 687
 688         return hn_vf_xstats_reset(dev);
 689 }
 690
 691 static int
 692 hn_dev_xstats_count(struct rte_eth_dev *dev)
 693 {
 694         int ret, count;
 695
 696         count = dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings);
 697         count += dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
 698
 699         ret = hn_vf_xstats_get_names(dev, NULL, 0);
 700         if (ret < 0)
 701                 return ret;
 702
 703         return count + ret;
 704 }
 705
 706 static int
 707 hn_dev_xstats_get_names(struct rte_eth_dev *dev,
 708                         struct rte_eth_xstat_name *xstats_names,
 709                         unsigned int limit)
 710 {
 711         unsigned int i, t, count = 0;
 712         int ret;
 713
 714         if (!xstats_names)
 715                 return hn_dev_xstats_count(dev);
 716
 717         /* Note: limit checked in rte_eth_xstats_names() */
 718         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 719                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 720
 721                 if (!txq)
 722                         continue;
 723
 724                 if (count >= limit)
 725                         break;
 726
 727                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 728                         snprintf(xstats_names[count++].name,
 729                                  RTE_ETH_XSTATS_NAME_SIZE,
 730                                  "tx_q%u_%s", i, hn_stat_strings[t].name);
 731         }
 732
 733         for (i = 0; i < dev->data->nb_rx_queues; i++)  {
 734                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 735
 736                 if (!rxq)
 737                         continue;
 738
 739                 if (count >= limit)
 740                         break;
 741
 742                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 743                         snprintf(xstats_names[count++].name,
 744                                  RTE_ETH_XSTATS_NAME_SIZE,
 745                                  "rx_q%u_%s", i,
 746                                  hn_stat_strings[t].name);
 747         }
 748
 749         ret = hn_vf_xstats_get_names(dev, xstats_names + count,
 750                                      limit - count);
 751         if (ret < 0)
 752                 return ret;
 753
 754         return count + ret;
 755 }
 756
 757 static int
 758 hn_dev_xstats_get(struct rte_eth_dev *dev,
 759                   struct rte_eth_xstat *xstats,
 760                   unsigned int n)
 761 {
 762         unsigned int i, t, count = 0;
 763         const unsigned int nstats = hn_dev_xstats_count(dev);
 764         const char *stats;
 765         int ret;
 766
 767         PMD_INIT_FUNC_TRACE();
 768
 769         if (n < nstats)
 770                 return nstats;
 771
 772         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 773                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 774
 775                 if (!txq)
 776                         continue;
 777
 778                 stats = (const char *)&txq->stats;
 779                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++, count++) {
 780                         xstats[count].id = count;
 781                         xstats[count].value = *(const uint64_t *)
 782                                 (stats + hn_stat_strings[t].offset);
 783                 }
 784         }
 785
 786         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 787                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 788
 789                 if (!rxq)
 790                         continue;
 791
 792                 stats = (const char *)&rxq->stats;
 793                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++, count++) {
 794                         xstats[count].id = count;
 795                         xstats[count].value = *(const uint64_t *)
 796                                 (stats + hn_stat_strings[t].offset);
 797                 }
 798         }
 799
 800         ret = hn_vf_xstats_get(dev, xstats, count, n);
 801         if (ret < 0)
 802                 return ret;
 803
 804         return count + ret;
 805 }
 806
 807 static int
 808 hn_dev_start(struct rte_eth_dev *dev)
 809 {
 810         struct hn_data *hv = dev->data->dev_private;
 811         int error;
 812
 813         PMD_INIT_FUNC_TRACE();
 814
 815         error = hn_rndis_set_rxfilter(hv,
 816                                       NDIS_PACKET_TYPE_BROADCAST |
 817                                       NDIS_PACKET_TYPE_ALL_MULTICAST |
 818                                       NDIS_PACKET_TYPE_DIRECTED);
 819         if (error)
 820                 return error;
 821
 822         error = hn_vf_start(dev);
 823         if (error)
 824                 hn_rndis_set_rxfilter(hv, 0);
 825
 826         /* Initialize Link state */
 827         if (error == 0)
 828                 hn_dev_link_update(dev, 0);
 829
 830         return error;
 831 }
 832
 833 static void
 834 hn_dev_stop(struct rte_eth_dev *dev)
 835 {
 836         struct hn_data *hv = dev->data->dev_private;
 837
 838         PMD_INIT_FUNC_TRACE();
 839
 840         hn_rndis_set_rxfilter(hv, 0);
 841         hn_vf_stop(dev);
 842 }
 843
 844 static void
 845 hn_dev_close(struct rte_eth_dev *dev)
 846 {
 847         PMD_INIT_FUNC_TRACE();
 848
 849         hn_vf_close(dev);
 850         hn_dev_free_queues(dev);
 851 }
 852
 853 static const struct eth_dev_ops hn_eth_dev_ops = {
 854         .dev_configure          = hn_dev_configure,
 855         .dev_start              = hn_dev_start,
 856         .dev_stop               = hn_dev_stop,
 857         .dev_close              = hn_dev_close,
 858         .dev_infos_get          = hn_dev_info_get,
 859         .txq_info_get           = hn_dev_tx_queue_info,
 860         .rxq_info_get           = hn_dev_rx_queue_info,
 861         .dev_supported_ptypes_get = hn_vf_supported_ptypes,
 862         .promiscuous_enable     = hn_dev_promiscuous_enable,
 863         .promiscuous_disable    = hn_dev_promiscuous_disable,
 864         .allmulticast_enable    = hn_dev_allmulticast_enable,
 865         .allmulticast_disable   = hn_dev_allmulticast_disable,
 866         .set_mc_addr_list       = hn_dev_mc_addr_list,
 867         .reta_update            = hn_rss_reta_update,
 868         .reta_query             = hn_rss_reta_query,
 869         .rss_hash_update        = hn_rss_hash_update,
 870         .rss_hash_conf_get      = hn_rss_hash_conf_get,
 871         .tx_queue_setup         = hn_dev_tx_queue_setup,
 872         .tx_queue_release       = hn_dev_tx_queue_release,
 873         .tx_done_cleanup        = hn_dev_tx_done_cleanup,
 874         .tx_descriptor_status   = hn_dev_tx_descriptor_status,
 875         .rx_queue_setup         = hn_dev_rx_queue_setup,
 876         .rx_queue_release       = hn_dev_rx_queue_release,
 877         .rx_queue_count         = hn_dev_rx_queue_count,
 878         .rx_descriptor_status   = hn_dev_rx_queue_status,
 879         .link_update            = hn_dev_link_update,
 880         .stats_get              = hn_dev_stats_get,
 881         .stats_reset            = hn_dev_stats_reset,
 882         .xstats_get             = hn_dev_xstats_get,
 883         .xstats_get_names       = hn_dev_xstats_get_names,
 884         .xstats_reset           = hn_dev_xstats_reset,
 885 };
 886
 887 /*
 888  * Setup connection between PMD and kernel.
 889  */
 890 static int
 891 hn_attach(struct hn_data *hv, unsigned int mtu)
 892 {
 893         int error;
 894
 895         /* Attach NVS */
 896         error = hn_nvs_attach(hv, mtu);
 897         if (error)
 898                 goto failed_nvs;
 899
 900         /* Attach RNDIS */
 901         error = hn_rndis_attach(hv);
 902         if (error)
 903                 goto failed_rndis;
 904
 905         /*
 906          * NOTE:
 907          * Under certain conditions on certain versions of Hyper-V,
 908          * the RNDIS rxfilter is _not_ zero on the hypervisor side
 909          * after the successful RNDIS initialization.
 910          */
 911         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
 912         return 0;
 913 failed_rndis:
 914         hn_nvs_detach(hv);
 915 failed_nvs:
 916         return error;
 917 }
 918
 919 static void
 920 hn_detach(struct hn_data *hv)
 921 {
 922         hn_nvs_detach(hv);
 923         hn_rndis_detach(hv);
 924 }
 925
 926 static int
 927 eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 928 {
 929         struct hn_data *hv = eth_dev->data->dev_private;
 930         struct rte_device *device = eth_dev->device;
 931         struct rte_vmbus_device *vmbus;
 932         unsigned int rxr_cnt;
 933         int err, max_chan;
 934
 935         PMD_INIT_FUNC_TRACE();
 936
 937         vmbus = container_of(device, struct rte_vmbus_device, device);
 938         eth_dev->dev_ops = &hn_eth_dev_ops;
 939         eth_dev->tx_pkt_burst = &hn_xmit_pkts;
 940         eth_dev->rx_pkt_burst = &hn_recv_pkts;
 941
 942         /*
 943          * for secondary processes, we don't initialize any further as primary
 944          * has already done this work.
 945          */
 946         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 947                 return 0;
 948
 949         /* Since Hyper-V only supports one MAC address */
 950         eth_dev->data->mac_addrs = rte_calloc("hv_mac", HN_MAX_MAC_ADDRS,
 951                                               sizeof(struct rte_ether_addr), 0);
 952         if (eth_dev->data->mac_addrs == NULL) {
 953                 PMD_INIT_LOG(ERR,
 954                              "Failed to allocate memory store MAC addresses");
 955                 return -ENOMEM;
 956         }
 957
 958         hv->vmbus = vmbus;
 959         hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
 960         hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];
 961         hv->port_id = eth_dev->data->port_id;
 962         hv->latency = HN_CHAN_LATENCY_NS;
 963         hv->max_queues = 1;
 964         rte_rwlock_init(&hv->vf_lock);
 965         hv->vf_port = HN_INVALID_PORT;
 966
 967         err = hn_parse_args(eth_dev);
 968         if (err)
 969                 return err;
 970
 971         strlcpy(hv->owner.name, eth_dev->device->name,
 972                 RTE_ETH_MAX_OWNER_NAME_LEN);
 973         err = rte_eth_dev_owner_new(&hv->owner.id);
 974         if (err) {
 975                 PMD_INIT_LOG(ERR, "Can not get owner id");
 976                 return err;
 977         }
 978
 979         /* Initialize primary channel input for control operations */
 980         err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
 981         if (err)
 982                 return err;
 983
 984         rte_vmbus_set_latency(hv->vmbus, hv->channels[0], hv->latency);
 985
 986         hv->primary = hn_rx_queue_alloc(hv, 0,
 987                                         eth_dev->device->numa_node);
 988
 989         if (!hv->primary)
 990                 return -ENOMEM;
 991
 992         err = hn_attach(hv, RTE_ETHER_MTU);
 993         if  (err)
 994                 goto failed;
 995
 996         err = hn_chim_init(eth_dev);
 997         if (err)
 998                 goto failed;
 999
1000         err = hn_rndis_get_eaddr(hv, eth_dev->data->mac_addrs->addr_bytes);
1001         if (err)
1002                 goto failed;
1003
1004         /* Multi queue requires later versions of windows server */
1005         if (hv->nvs_ver < NVS_VERSION_5)
1006                 return 0;
1007
1008         max_chan = rte_vmbus_max_channels(vmbus);
1009         PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
1010         if (max_chan <= 0)
1011                 goto failed;
1012
1013         if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
1014                 rxr_cnt = 1;
1015
1016         hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
1017
1018         /* If VF was reported but not added, do it now */
1019         if (hv->vf_present && !hn_vf_attached(hv)) {
1020                 PMD_INIT_LOG(DEBUG, "Adding VF device");
1021
1022                 err = hn_vf_add(eth_dev, hv);
1023                 if (err)
1024                         hv->vf_present = 0;
1025         }
1026
1027         return 0;
1028
1029 failed:
1030         PMD_INIT_LOG(NOTICE, "device init failed");
1031
1032         hn_chim_uninit(eth_dev);
1033         hn_detach(hv);
1034         return err;
1035 }
1036
1037 static int
1038 eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
1039 {
1040         struct hn_data *hv = eth_dev->data->dev_private;
1041         int ret;
1042
1043         PMD_INIT_FUNC_TRACE();
1044
1045         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1046                 return 0;
1047
1048         hn_dev_stop(eth_dev);
1049         hn_dev_close(eth_dev);
1050
1051         eth_dev->dev_ops = NULL;
1052         eth_dev->tx_pkt_burst = NULL;
1053         eth_dev->rx_pkt_burst = NULL;
1054
1055         hn_detach(hv);
1056         hn_chim_uninit(eth_dev);
1057         rte_vmbus_chan_close(hv->primary->chan);
1058         rte_free(hv->primary);
1059         ret = rte_eth_dev_owner_delete(hv->owner.id);
1060         if (ret != 0)
1061                 return ret;
1062
1063         return 0;
1064 }
1065
1066 static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
1067                         struct rte_vmbus_device *dev)
1068 {
1069         struct rte_eth_dev *eth_dev;
1070         int ret;
1071
1072         PMD_INIT_FUNC_TRACE();
1073
1074         eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
1075         if (!eth_dev)
1076                 return -ENOMEM;
1077
1078         ret = eth_hn_dev_init(eth_dev);
1079         if (ret)
1080                 eth_dev_vmbus_release(eth_dev);
1081         else
1082                 rte_eth_dev_probing_finish(eth_dev);
1083
1084         return ret;
1085 }
1086
1087 static int eth_hn_remove(struct rte_vmbus_device *dev)
1088 {
1089         struct rte_eth_dev *eth_dev;
1090         int ret;
1091
1092         PMD_INIT_FUNC_TRACE();
1093
1094         eth_dev = rte_eth_dev_allocated(dev->device.name);
1095         if (!eth_dev)
1096                 return -ENODEV;
1097
1098         ret = eth_hn_dev_uninit(eth_dev);
1099         if (ret)
1100                 return ret;
1101
1102         eth_dev_vmbus_release(eth_dev);
1103         return 0;
1104 }
1105
1106 /* Network device GUID */
1107 static const rte_uuid_t hn_net_ids[] = {
1108         /*  f8615163-df3e-46c5-913f-f2d2f965ed0e */
1109         RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
1110         { 0 }
1111 };
1112
1113 static struct rte_vmbus_driver rte_netvsc_pmd = {
1114         .id_table = hn_net_ids,
1115         .probe = eth_hn_probe,
1116         .remove = eth_hn_remove,
1117 };
1118
1119 RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
1120 RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
1121 RTE_LOG_REGISTER(hn_logtype_init, pmd.net.netvsc.init, NOTICE);
1122 RTE_LOG_REGISTER(hn_logtype_driver, pmd.net.netvsc.driver, NOTICE);