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 int hn_logtype_init;
  49 int hn_logtype_driver;
  50
  51 struct hn_xstats_name_off {
  52         char name[RTE_ETH_XSTATS_NAME_SIZE];
  53         unsigned int offset;
  54 };
  55
  56 static const struct hn_xstats_name_off hn_stat_strings[] = {
  57         { "good_packets",           offsetof(struct hn_stats, packets) },
  58         { "good_bytes",             offsetof(struct hn_stats, bytes) },
  59         { "errors",                 offsetof(struct hn_stats, errors) },
  60         { "ring full",              offsetof(struct hn_stats, ring_full) },
  61         { "multicast_packets",      offsetof(struct hn_stats, multicast) },
  62         { "broadcast_packets",      offsetof(struct hn_stats, broadcast) },
  63         { "undersize_packets",      offsetof(struct hn_stats, size_bins[0]) },
  64         { "size_64_packets",        offsetof(struct hn_stats, size_bins[1]) },
  65         { "size_65_127_packets",    offsetof(struct hn_stats, size_bins[2]) },
  66         { "size_128_255_packets",   offsetof(struct hn_stats, size_bins[3]) },
  67         { "size_256_511_packets",   offsetof(struct hn_stats, size_bins[4]) },
  68         { "size_512_1023_packets",  offsetof(struct hn_stats, size_bins[5]) },
  69         { "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) },
  70         { "size_1519_max_packets",  offsetof(struct hn_stats, size_bins[7]) },
  71 };
  72
  73 /* The default RSS key.
  74  * This value is the same as MLX5 so that flows will be
  75  * received on same path for both VF and synthetic NIC.
  76  */
  77 static const uint8_t rss_default_key[NDIS_HASH_KEYSIZE_TOEPLITZ] = {
  78         0x2c, 0xc6, 0x81, 0xd1, 0x5b, 0xdb, 0xf4, 0xf7,
  79         0xfc, 0xa2, 0x83, 0x19, 0xdb, 0x1a, 0x3e, 0x94,
  80         0x6b, 0x9e, 0x38, 0xd9, 0x2c, 0x9c, 0x03, 0xd1,
  81         0xad, 0x99, 0x44, 0xa7, 0xd9, 0x56, 0x3d, 0x59,
  82         0x06, 0x3c, 0x25, 0xf3, 0xfc, 0x1f, 0xdc, 0x2a,
  83 };
  84
  85 static struct rte_eth_dev *
  86 eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
  87 {
  88         struct rte_eth_dev *eth_dev;
  89         const char *name;
  90
  91         if (!dev)
  92                 return NULL;
  93
  94         name = dev->device.name;
  95
  96         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
  97                 eth_dev = rte_eth_dev_allocate(name);
  98                 if (!eth_dev) {
  99                         PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
 100                         return NULL;
 101                 }
 102
 103                 if (private_data_size) {
 104                         eth_dev->data->dev_private =
 105                                 rte_zmalloc_socket(name, private_data_size,
 106                                                      RTE_CACHE_LINE_SIZE, dev->device.numa_node);
 107                         if (!eth_dev->data->dev_private) {
 108                                 PMD_DRV_LOG(NOTICE, "can not allocate driver data");
 109                                 rte_eth_dev_release_port(eth_dev);
 110                                 return NULL;
 111                         }
 112                 }
 113         } else {
 114                 eth_dev = rte_eth_dev_attach_secondary(name);
 115                 if (!eth_dev) {
 116                         PMD_DRV_LOG(NOTICE, "can not attach secondary");
 117                         return NULL;
 118                 }
 119         }
 120
 121         eth_dev->device = &dev->device;
 122
 123         /* interrupt is simulated */
 124         dev->intr_handle.type = RTE_INTR_HANDLE_EXT;
 125         eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
 126         eth_dev->intr_handle = &dev->intr_handle;
 127
 128         /* allow ethdev to remove on close */
 129         eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
 130
 131         return eth_dev;
 132 }
 133
 134 static void
 135 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
 136 {
 137         /* free ether device */
 138         rte_eth_dev_release_port(eth_dev);
 139
 140         eth_dev->device = NULL;
 141         eth_dev->intr_handle = NULL;
 142 }
 143
 144 /* handle "latency=X" from devargs */
 145 static int hn_set_latency(const char *key, const char *value, void *opaque)
 146 {
 147         struct hn_data *hv = opaque;
 148         char *endp = NULL;
 149         unsigned long lat;
 150
 151         errno = 0;
 152         lat = strtoul(value, &endp, 0);
 153
 154         if (*value == '\0' || *endp != '\0') {
 155                 PMD_DRV_LOG(ERR, "invalid parameter %s=%s", key, value);
 156                 return -EINVAL;
 157         }
 158
 159         PMD_DRV_LOG(DEBUG, "set latency %lu usec", lat);
 160
 161         hv->latency = lat * 1000;       /* usec to nsec */
 162         return 0;
 163 }
 164
 165 /* Parse device arguments */
 166 static int hn_parse_args(const struct rte_eth_dev *dev)
 167 {
 168         struct hn_data *hv = dev->data->dev_private;
 169         struct rte_devargs *devargs = dev->device->devargs;
 170         static const char * const valid_keys[] = {
 171                 "latency",
 172                 NULL
 173         };
 174         struct rte_kvargs *kvlist;
 175         int ret;
 176
 177         if (!devargs)
 178                 return 0;
 179
 180         PMD_INIT_LOG(DEBUG, "device args %s %s",
 181                      devargs->name, devargs->args);
 182
 183         kvlist = rte_kvargs_parse(devargs->args, valid_keys);
 184         if (!kvlist) {
 185                 PMD_DRV_LOG(NOTICE, "invalid parameters");
 186                 return -EINVAL;
 187         }
 188
 189         ret = rte_kvargs_process(kvlist, "latency", hn_set_latency, hv);
 190         if (ret)
 191                 PMD_DRV_LOG(ERR, "Unable to process latency arg\n");
 192
 193         rte_kvargs_free(kvlist);
 194         return ret;
 195 }
 196
 197 /* Update link status.
 198  * Note: the DPDK definition of "wait_to_complete"
 199  *   means block this call until link is up.
 200  *   which is not worth supporting.
 201  */
 202 int
 203 hn_dev_link_update(struct rte_eth_dev *dev,
 204                    int wait_to_complete)
 205 {
 206         struct hn_data *hv = dev->data->dev_private;
 207         struct rte_eth_link link, old;
 208         int error;
 209
 210         old = dev->data->dev_link;
 211
 212         error = hn_rndis_get_linkstatus(hv);
 213         if (error)
 214                 return error;
 215
 216         hn_rndis_get_linkspeed(hv);
 217
 218         hn_vf_link_update(dev, wait_to_complete);
 219
 220         link = (struct rte_eth_link) {
 221                 .link_duplex = ETH_LINK_FULL_DUPLEX,
 222                 .link_autoneg = ETH_LINK_SPEED_FIXED,
 223                 .link_speed = hv->link_speed / 10000,
 224         };
 225
 226         if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
 227                 link.link_status = ETH_LINK_UP;
 228         else
 229                 link.link_status = ETH_LINK_DOWN;
 230
 231         if (old.link_status == link.link_status)
 232                 return 0;
 233
 234         PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
 235                      (link.link_status == ETH_LINK_UP) ? "up" : "down");
 236
 237         return rte_eth_linkstatus_set(dev, &link);
 238 }
 239
 240 static int hn_dev_info_get(struct rte_eth_dev *dev,
 241                            struct rte_eth_dev_info *dev_info)
 242 {
 243         struct hn_data *hv = dev->data->dev_private;
 244         int rc;
 245
 246         dev_info->speed_capa = ETH_LINK_SPEED_10G;
 247         dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
 248         dev_info->max_rx_pktlen  = HN_MAX_XFER_LEN;
 249         dev_info->max_mac_addrs  = 1;
 250
 251         dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
 252         dev_info->flow_type_rss_offloads = hv->rss_offloads;
 253         dev_info->reta_size = ETH_RSS_RETA_SIZE_128;
 254
 255         dev_info->max_rx_queues = hv->max_queues;
 256         dev_info->max_tx_queues = hv->max_queues;
 257
 258         dev_info->tx_desc_lim.nb_min = 1;
 259         dev_info->tx_desc_lim.nb_max = 4096;
 260
 261         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 262                 return 0;
 263
 264         /* fills in rx and tx offload capability */
 265         rc = hn_rndis_get_offload(hv, dev_info);
 266         if (rc != 0)
 267                 return rc;
 268
 269         /* merges the offload and queues of vf */
 270         return hn_vf_info_get(hv, dev_info);
 271 }
 272
 273 static int hn_rss_reta_update(struct rte_eth_dev *dev,
 274                               struct rte_eth_rss_reta_entry64 *reta_conf,
 275                               uint16_t reta_size)
 276 {
 277         struct hn_data *hv = dev->data->dev_private;
 278         unsigned int i;
 279         int err;
 280
 281         PMD_INIT_FUNC_TRACE();
 282
 283         if (reta_size != NDIS_HASH_INDCNT) {
 284                 PMD_DRV_LOG(ERR, "Hash lookup table size does not match NDIS");
 285                 return -EINVAL;
 286         }
 287
 288         for (i = 0; i < NDIS_HASH_INDCNT; i++) {
 289                 uint16_t idx = i / RTE_RETA_GROUP_SIZE;
 290                 uint16_t shift = i % RTE_RETA_GROUP_SIZE;
 291                 uint64_t mask = (uint64_t)1 << shift;
 292
 293                 if (reta_conf[idx].mask & mask)
 294                         hv->rss_ind[i] = reta_conf[idx].reta[shift];
 295         }
 296
 297         err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
 298         if (err) {
 299                 PMD_DRV_LOG(NOTICE,
 300                         "rss disable failed");
 301                 return err;
 302         }
 303
 304         err = hn_rndis_conf_rss(hv, 0);
 305         if (err) {
 306                 PMD_DRV_LOG(NOTICE,
 307                             "reta reconfig failed");
 308                 return err;
 309         }
 310
 311         return hn_vf_reta_hash_update(dev, reta_conf, reta_size);
 312 }
 313
 314 static int hn_rss_reta_query(struct rte_eth_dev *dev,
 315                              struct rte_eth_rss_reta_entry64 *reta_conf,
 316                              uint16_t reta_size)
 317 {
 318         struct hn_data *hv = dev->data->dev_private;
 319         unsigned int i;
 320
 321         PMD_INIT_FUNC_TRACE();
 322
 323         if (reta_size != NDIS_HASH_INDCNT) {
 324                 PMD_DRV_LOG(ERR, "Hash lookup table size does not match NDIS");
 325                 return -EINVAL;
 326         }
 327
 328         for (i = 0; i < NDIS_HASH_INDCNT; i++) {
 329                 uint16_t idx = i / RTE_RETA_GROUP_SIZE;
 330                 uint16_t shift = i % RTE_RETA_GROUP_SIZE;
 331                 uint64_t mask = (uint64_t)1 << shift;
 332
 333                 if (reta_conf[idx].mask & mask)
 334                         reta_conf[idx].reta[shift] = hv->rss_ind[i];
 335         }
 336         return 0;
 337 }
 338
 339 static void hn_rss_hash_init(struct hn_data *hv,
 340                              const struct rte_eth_rss_conf *rss_conf)
 341 {
 342         /* Convert from DPDK RSS hash flags to NDIS hash flags */
 343         hv->rss_hash = NDIS_HASH_FUNCTION_TOEPLITZ;
 344
 345         if (rss_conf->rss_hf & ETH_RSS_IPV4)
 346                 hv->rss_hash |= NDIS_HASH_IPV4;
 347         if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
 348                 hv->rss_hash |= NDIS_HASH_TCP_IPV4;
 349         if (rss_conf->rss_hf & ETH_RSS_IPV6)
 350                 hv->rss_hash |=  NDIS_HASH_IPV6;
 351         if (rss_conf->rss_hf & ETH_RSS_IPV6_EX)
 352                 hv->rss_hash |=  NDIS_HASH_IPV6_EX;
 353         if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
 354                 hv->rss_hash |= NDIS_HASH_TCP_IPV6;
 355         if (rss_conf->rss_hf & ETH_RSS_IPV6_TCP_EX)
 356                 hv->rss_hash |= NDIS_HASH_TCP_IPV6_EX;
 357
 358         memcpy(hv->rss_key, rss_conf->rss_key ? : rss_default_key,
 359                NDIS_HASH_KEYSIZE_TOEPLITZ);
 360 }
 361
 362 static int hn_rss_hash_update(struct rte_eth_dev *dev,
 363                               struct rte_eth_rss_conf *rss_conf)
 364 {
 365         struct hn_data *hv = dev->data->dev_private;
 366         int err;
 367
 368         PMD_INIT_FUNC_TRACE();
 369
 370         err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
 371         if (err) {
 372                 PMD_DRV_LOG(NOTICE,
 373                             "rss disable failed");
 374                 return err;
 375         }
 376
 377         hn_rss_hash_init(hv, rss_conf);
 378
 379         err = hn_rndis_conf_rss(hv, 0);
 380         if (err) {
 381                 PMD_DRV_LOG(NOTICE,
 382                             "rss reconfig failed (RSS disabled)");
 383                 return err;
 384         }
 385
 386
 387         return hn_vf_rss_hash_update(dev, rss_conf);
 388 }
 389
 390 static int hn_rss_hash_conf_get(struct rte_eth_dev *dev,
 391                                 struct rte_eth_rss_conf *rss_conf)
 392 {
 393         struct hn_data *hv = dev->data->dev_private;
 394
 395         PMD_INIT_FUNC_TRACE();
 396
 397         if (hv->ndis_ver < NDIS_VERSION_6_20) {
 398                 PMD_DRV_LOG(DEBUG, "RSS not supported on this host");
 399                 return -EOPNOTSUPP;
 400         }
 401
 402         rss_conf->rss_key_len = NDIS_HASH_KEYSIZE_TOEPLITZ;
 403         if (rss_conf->rss_key)
 404                 memcpy(rss_conf->rss_key, hv->rss_key,
 405                        NDIS_HASH_KEYSIZE_TOEPLITZ);
 406
 407         rss_conf->rss_hf = 0;
 408         if (hv->rss_hash & NDIS_HASH_IPV4)
 409                 rss_conf->rss_hf |= ETH_RSS_IPV4;
 410
 411         if (hv->rss_hash & NDIS_HASH_TCP_IPV4)
 412                 rss_conf->rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP;
 413
 414         if (hv->rss_hash & NDIS_HASH_IPV6)
 415                 rss_conf->rss_hf |= ETH_RSS_IPV6;
 416
 417         if (hv->rss_hash & NDIS_HASH_IPV6_EX)
 418                 rss_conf->rss_hf |= ETH_RSS_IPV6_EX;
 419
 420         if (hv->rss_hash & NDIS_HASH_TCP_IPV6)
 421                 rss_conf->rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP;
 422
 423         if (hv->rss_hash & NDIS_HASH_TCP_IPV6_EX)
 424                 rss_conf->rss_hf |= ETH_RSS_IPV6_TCP_EX;
 425
 426         return 0;
 427 }
 428
 429 static int
 430 hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
 431 {
 432         struct hn_data *hv = dev->data->dev_private;
 433
 434         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
 435         return hn_vf_promiscuous_enable(dev);
 436 }
 437
 438 static int
 439 hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
 440 {
 441         struct hn_data *hv = dev->data->dev_private;
 442         uint32_t filter;
 443
 444         filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
 445         if (dev->data->all_multicast)
 446                 filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
 447         hn_rndis_set_rxfilter(hv, filter);
 448         return hn_vf_promiscuous_disable(dev);
 449 }
 450
 451 static int
 452 hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
 453 {
 454         struct hn_data *hv = dev->data->dev_private;
 455
 456         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 457                               NDIS_PACKET_TYPE_ALL_MULTICAST |
 458                         NDIS_PACKET_TYPE_BROADCAST);
 459         return hn_vf_allmulticast_enable(dev);
 460 }
 461
 462 static int
 463 hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
 464 {
 465         struct hn_data *hv = dev->data->dev_private;
 466
 467         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
 468                              NDIS_PACKET_TYPE_BROADCAST);
 469         return hn_vf_allmulticast_disable(dev);
 470 }
 471
 472 static int
 473 hn_dev_mc_addr_list(struct rte_eth_dev *dev,
 474                      struct rte_ether_addr *mc_addr_set,
 475                      uint32_t nb_mc_addr)
 476 {
 477         /* No filtering on the synthetic path, but can do it on VF */
 478         return hn_vf_mc_addr_list(dev, mc_addr_set, nb_mc_addr);
 479 }
 480
 481 /* Setup shared rx/tx queue data */
 482 static int hn_subchan_configure(struct hn_data *hv,
 483                                 uint32_t subchan)
 484 {
 485         struct vmbus_channel *primary = hn_primary_chan(hv);
 486         int err;
 487         unsigned int retry = 0;
 488
 489         PMD_DRV_LOG(DEBUG,
 490                     "open %u subchannels", subchan);
 491
 492         /* Send create sub channels command */
 493         err = hn_nvs_alloc_subchans(hv, &subchan);
 494         if (err)
 495                 return  err;
 496
 497         while (subchan > 0) {
 498                 struct vmbus_channel *new_sc;
 499                 uint16_t chn_index;
 500
 501                 err = rte_vmbus_subchan_open(primary, &new_sc);
 502                 if (err == -ENOENT && ++retry < 1000) {
 503                         /* This can happen if not ready yet */
 504                         rte_delay_ms(10);
 505                         continue;
 506                 }
 507
 508                 if (err) {
 509                         PMD_DRV_LOG(ERR,
 510                                     "open subchannel failed: %d", err);
 511                         return err;
 512                 }
 513
 514                 rte_vmbus_set_latency(hv->vmbus, new_sc, hv->latency);
 515
 516                 retry = 0;
 517                 chn_index = rte_vmbus_sub_channel_index(new_sc);
 518                 if (chn_index == 0 || chn_index > hv->max_queues) {
 519                         PMD_DRV_LOG(ERR,
 520                                     "Invalid subchannel offermsg channel %u",
 521                                     chn_index);
 522                         return -EIO;
 523                 }
 524
 525                 PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
 526                 hv->channels[chn_index] = new_sc;
 527                 --subchan;
 528         }
 529
 530         return err;
 531 }
 532
 533 static int hn_dev_configure(struct rte_eth_dev *dev)
 534 {
 535         struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
 536         struct rte_eth_rss_conf *rss_conf = &dev_conf->rx_adv_conf.rss_conf;
 537         const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
 538         const struct rte_eth_txmode *txmode = &dev_conf->txmode;
 539         struct hn_data *hv = dev->data->dev_private;
 540         uint64_t unsupported;
 541         int i, err, subchan;
 542
 543         PMD_INIT_FUNC_TRACE();
 544
 545         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
 546                 dev_conf->rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 547
 548         unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
 549         if (unsupported) {
 550                 PMD_DRV_LOG(NOTICE,
 551                             "unsupported TX offload: %#" PRIx64,
 552                             unsupported);
 553                 return -EINVAL;
 554         }
 555
 556         unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
 557         if (unsupported) {
 558                 PMD_DRV_LOG(NOTICE,
 559                             "unsupported RX offload: %#" PRIx64,
 560                             rxmode->offloads);
 561                 return -EINVAL;
 562         }
 563
 564         hv->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
 565
 566         err = hn_rndis_conf_offload(hv, txmode->offloads,
 567                                     rxmode->offloads);
 568         if (err) {
 569                 PMD_DRV_LOG(NOTICE,
 570                             "offload configure failed");
 571                 return err;
 572         }
 573
 574         hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
 575                                  dev->data->nb_tx_queues);
 576
 577         for (i = 0; i < NDIS_HASH_INDCNT; i++)
 578                 hv->rss_ind[i] = i % hv->num_queues;
 579
 580         hn_rss_hash_init(hv, rss_conf);
 581
 582         subchan = hv->num_queues - 1;
 583         if (subchan > 0) {
 584                 err = hn_subchan_configure(hv, subchan);
 585                 if (err) {
 586                         PMD_DRV_LOG(NOTICE,
 587                                     "subchannel configuration failed");
 588                         return err;
 589                 }
 590
 591                 err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
 592                 if (err) {
 593                         PMD_DRV_LOG(NOTICE,
 594                                 "rss disable failed");
 595                         return err;
 596                 }
 597
 598                 err = hn_rndis_conf_rss(hv, 0);
 599                 if (err) {
 600                         PMD_DRV_LOG(NOTICE,
 601                                     "initial RSS config failed");
 602                         return err;
 603                 }
 604         }
 605
 606         return hn_vf_configure(dev, dev_conf);
 607 }
 608
 609 static int hn_dev_stats_get(struct rte_eth_dev *dev,
 610                             struct rte_eth_stats *stats)
 611 {
 612         unsigned int i;
 613
 614         hn_vf_stats_get(dev, stats);
 615
 616         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 617                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 618
 619                 if (!txq)
 620                         continue;
 621
 622                 stats->opackets += txq->stats.packets;
 623                 stats->obytes += txq->stats.bytes;
 624                 stats->oerrors += txq->stats.errors;
 625
 626                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 627                         stats->q_opackets[i] = txq->stats.packets;
 628                         stats->q_obytes[i] = txq->stats.bytes;
 629                 }
 630         }
 631
 632         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 633                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 634
 635                 if (!rxq)
 636                         continue;
 637
 638                 stats->ipackets += rxq->stats.packets;
 639                 stats->ibytes += rxq->stats.bytes;
 640                 stats->ierrors += rxq->stats.errors;
 641                 stats->imissed += rxq->stats.ring_full;
 642
 643                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 644                         stats->q_ipackets[i] = rxq->stats.packets;
 645                         stats->q_ibytes[i] = rxq->stats.bytes;
 646                 }
 647         }
 648
 649         stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
 650         return 0;
 651 }
 652
 653 static int
 654 hn_dev_stats_reset(struct rte_eth_dev *dev)
 655 {
 656         unsigned int i;
 657
 658         PMD_INIT_FUNC_TRACE();
 659
 660         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 661                 struct hn_tx_queue *txq = dev->data->tx_queues[i];
 662
 663                 if (!txq)
 664                         continue;
 665                 memset(&txq->stats, 0, sizeof(struct hn_stats));
 666         }
 667
 668         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 669                 struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 670
 671                 if (!rxq)
 672                         continue;
 673
 674                 memset(&rxq->stats, 0, sizeof(struct hn_stats));
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int
 681 hn_dev_xstats_reset(struct rte_eth_dev *dev)
 682 {
 683         int ret;
 684
 685         ret = hn_dev_stats_reset(dev);
 686         if (ret != 0)
 687                 return 0;
 688
 689         return hn_vf_xstats_reset(dev);
 690 }
 691
 692 static int
 693 hn_dev_xstats_count(struct rte_eth_dev *dev)
 694 {
 695         int ret, count;
 696
 697         count = dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings);
 698         count += dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
 699
 700         ret = hn_vf_xstats_get_names(dev, NULL, 0);
 701         if (ret < 0)
 702                 return ret;
 703
 704         return count + ret;
 705 }
 706
 707 static int
 708 hn_dev_xstats_get_names(struct rte_eth_dev *dev,
 709                         struct rte_eth_xstat_name *xstats_names,
 710                         unsigned int limit)
 711 {
 712         unsigned int i, t, count = 0;
 713         int ret;
 714
 715         if (!xstats_names)
 716                 return hn_dev_xstats_count(dev);
 717
 718         /* Note: limit checked in rte_eth_xstats_names() */
 719         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 720                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 721
 722                 if (!txq)
 723                         continue;
 724
 725                 if (count >= limit)
 726                         break;
 727
 728                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 729                         snprintf(xstats_names[count++].name,
 730                                  RTE_ETH_XSTATS_NAME_SIZE,
 731                                  "tx_q%u_%s", i, hn_stat_strings[t].name);
 732         }
 733
 734         for (i = 0; i < dev->data->nb_rx_queues; i++)  {
 735                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 736
 737                 if (!rxq)
 738                         continue;
 739
 740                 if (count >= limit)
 741                         break;
 742
 743                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
 744                         snprintf(xstats_names[count++].name,
 745                                  RTE_ETH_XSTATS_NAME_SIZE,
 746                                  "rx_q%u_%s", i,
 747                                  hn_stat_strings[t].name);
 748         }
 749
 750         ret = hn_vf_xstats_get_names(dev, xstats_names + count,
 751                                      limit - count);
 752         if (ret < 0)
 753                 return ret;
 754
 755         return count + ret;
 756 }
 757
 758 static int
 759 hn_dev_xstats_get(struct rte_eth_dev *dev,
 760                   struct rte_eth_xstat *xstats,
 761                   unsigned int n)
 762 {
 763         unsigned int i, t, count = 0;
 764         const unsigned int nstats = hn_dev_xstats_count(dev);
 765         const char *stats;
 766         int ret;
 767
 768         PMD_INIT_FUNC_TRACE();
 769
 770         if (n < nstats)
 771                 return nstats;
 772
 773         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 774                 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
 775
 776                 if (!txq)
 777                         continue;
 778
 779                 stats = (const char *)&txq->stats;
 780                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++, count++) {
 781                         xstats[count].id = count;
 782                         xstats[count].value = *(const uint64_t *)
 783                                 (stats + hn_stat_strings[t].offset);
 784                 }
 785         }
 786
 787         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 788                 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
 789
 790                 if (!rxq)
 791                         continue;
 792
 793                 stats = (const char *)&rxq->stats;
 794                 for (t = 0; t < RTE_DIM(hn_stat_strings); t++, count++) {
 795                         xstats[count].id = count;
 796                         xstats[count].value = *(const uint64_t *)
 797                                 (stats + hn_stat_strings[t].offset);
 798                 }
 799         }
 800
 801         ret = hn_vf_xstats_get(dev, xstats, count, n);
 802         if (ret < 0)
 803                 return ret;
 804
 805         return count + ret;
 806 }
 807
 808 static int
 809 hn_dev_start(struct rte_eth_dev *dev)
 810 {
 811         struct hn_data *hv = dev->data->dev_private;
 812         int error;
 813
 814         PMD_INIT_FUNC_TRACE();
 815
 816         error = hn_rndis_set_rxfilter(hv,
 817                                       NDIS_PACKET_TYPE_BROADCAST |
 818                                       NDIS_PACKET_TYPE_ALL_MULTICAST |
 819                                       NDIS_PACKET_TYPE_DIRECTED);
 820         if (error)
 821                 return error;
 822
 823         error = hn_vf_start(dev);
 824         if (error)
 825                 hn_rndis_set_rxfilter(hv, 0);
 826
 827         /* Initialize Link state */
 828         if (error == 0)
 829                 hn_dev_link_update(dev, 0);
 830
 831         return error;
 832 }
 833
 834 static void
 835 hn_dev_stop(struct rte_eth_dev *dev)
 836 {
 837         struct hn_data *hv = dev->data->dev_private;
 838
 839         PMD_INIT_FUNC_TRACE();
 840
 841         hn_rndis_set_rxfilter(hv, 0);
 842         hn_vf_stop(dev);
 843 }
 844
 845 static void
 846 hn_dev_close(struct rte_eth_dev *dev)
 847 {
 848         PMD_INIT_FUNC_TRACE();
 849
 850         hn_vf_close(dev);
 851         hn_dev_free_queues(dev);
 852 }
 853
 854 static const struct eth_dev_ops hn_eth_dev_ops = {
 855         .dev_configure          = hn_dev_configure,
 856         .dev_start              = hn_dev_start,
 857         .dev_stop               = hn_dev_stop,
 858         .dev_close              = hn_dev_close,
 859         .dev_infos_get          = hn_dev_info_get,
 860         .dev_supported_ptypes_get = hn_vf_supported_ptypes,
 861         .promiscuous_enable     = hn_dev_promiscuous_enable,
 862         .promiscuous_disable    = hn_dev_promiscuous_disable,
 863         .allmulticast_enable    = hn_dev_allmulticast_enable,
 864         .allmulticast_disable   = hn_dev_allmulticast_disable,
 865         .set_mc_addr_list       = hn_dev_mc_addr_list,
 866         .reta_update            = hn_rss_reta_update,
 867         .reta_query             = hn_rss_reta_query,
 868         .rss_hash_update        = hn_rss_hash_update,
 869         .rss_hash_conf_get      = hn_rss_hash_conf_get,
 870         .tx_queue_setup         = hn_dev_tx_queue_setup,
 871         .tx_queue_release       = hn_dev_tx_queue_release,
 872         .tx_done_cleanup        = hn_dev_tx_done_cleanup,
 873         .rx_queue_setup         = hn_dev_rx_queue_setup,
 874         .rx_queue_release       = hn_dev_rx_queue_release,
 875         .link_update            = hn_dev_link_update,
 876         .stats_get              = hn_dev_stats_get,
 877         .stats_reset            = hn_dev_stats_reset,
 878         .xstats_get             = hn_dev_xstats_get,
 879         .xstats_get_names       = hn_dev_xstats_get_names,
 880         .xstats_reset           = hn_dev_xstats_reset,
 881 };
 882
 883 /*
 884  * Setup connection between PMD and kernel.
 885  */
 886 static int
 887 hn_attach(struct hn_data *hv, unsigned int mtu)
 888 {
 889         int error;
 890
 891         /* Attach NVS */
 892         error = hn_nvs_attach(hv, mtu);
 893         if (error)
 894                 goto failed_nvs;
 895
 896         /* Attach RNDIS */
 897         error = hn_rndis_attach(hv);
 898         if (error)
 899                 goto failed_rndis;
 900
 901         /*
 902          * NOTE:
 903          * Under certain conditions on certain versions of Hyper-V,
 904          * the RNDIS rxfilter is _not_ zero on the hypervisor side
 905          * after the successful RNDIS initialization.
 906          */
 907         hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
 908         return 0;
 909 failed_rndis:
 910         hn_nvs_detach(hv);
 911 failed_nvs:
 912         return error;
 913 }
 914
 915 static void
 916 hn_detach(struct hn_data *hv)
 917 {
 918         hn_nvs_detach(hv);
 919         hn_rndis_detach(hv);
 920 }
 921
 922 static int
 923 eth_hn_dev_init(struct rte_eth_dev *eth_dev)
 924 {
 925         struct hn_data *hv = eth_dev->data->dev_private;
 926         struct rte_device *device = eth_dev->device;
 927         struct rte_vmbus_device *vmbus;
 928         unsigned int rxr_cnt;
 929         int err, max_chan;
 930
 931         PMD_INIT_FUNC_TRACE();
 932
 933         vmbus = container_of(device, struct rte_vmbus_device, device);
 934         eth_dev->dev_ops = &hn_eth_dev_ops;
 935         eth_dev->tx_pkt_burst = &hn_xmit_pkts;
 936         eth_dev->rx_pkt_burst = &hn_recv_pkts;
 937
 938         /*
 939          * for secondary processes, we don't initialize any further as primary
 940          * has already done this work.
 941          */
 942         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 943                 return 0;
 944
 945         /* Since Hyper-V only supports one MAC address */
 946         eth_dev->data->mac_addrs = rte_calloc("hv_mac", HN_MAX_MAC_ADDRS,
 947                                               sizeof(struct rte_ether_addr), 0);
 948         if (eth_dev->data->mac_addrs == NULL) {
 949                 PMD_INIT_LOG(ERR,
 950                              "Failed to allocate memory store MAC addresses");
 951                 return -ENOMEM;
 952         }
 953
 954         hv->vmbus = vmbus;
 955         hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
 956         hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];
 957         hv->port_id = eth_dev->data->port_id;
 958         hv->latency = HN_CHAN_LATENCY_NS;
 959         hv->max_queues = 1;
 960         rte_rwlock_init(&hv->vf_lock);
 961         hv->vf_port = HN_INVALID_PORT;
 962
 963         err = hn_parse_args(eth_dev);
 964         if (err)
 965                 return err;
 966
 967         strlcpy(hv->owner.name, eth_dev->device->name,
 968                 RTE_ETH_MAX_OWNER_NAME_LEN);
 969         err = rte_eth_dev_owner_new(&hv->owner.id);
 970         if (err) {
 971                 PMD_INIT_LOG(ERR, "Can not get owner id");
 972                 return err;
 973         }
 974
 975         /* Initialize primary channel input for control operations */
 976         err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
 977         if (err)
 978                 return err;
 979
 980         rte_vmbus_set_latency(hv->vmbus, hv->channels[0], hv->latency);
 981
 982         hv->primary = hn_rx_queue_alloc(hv, 0,
 983                                         eth_dev->device->numa_node);
 984
 985         if (!hv->primary)
 986                 return -ENOMEM;
 987
 988         err = hn_attach(hv, RTE_ETHER_MTU);
 989         if  (err)
 990                 goto failed;
 991
 992         err = hn_chim_init(eth_dev);
 993         if (err)
 994                 goto failed;
 995
 996         err = hn_rndis_get_eaddr(hv, eth_dev->data->mac_addrs->addr_bytes);
 997         if (err)
 998                 goto failed;
 999
1000         /* Multi queue requires later versions of windows server */
1001         if (hv->nvs_ver < NVS_VERSION_5)
1002                 return 0;
1003
1004         max_chan = rte_vmbus_max_channels(vmbus);
1005         PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
1006         if (max_chan <= 0)
1007                 goto failed;
1008
1009         if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
1010                 rxr_cnt = 1;
1011
1012         hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
1013
1014         /* If VF was reported but not added, do it now */
1015         if (hv->vf_present && !hn_vf_attached(hv)) {
1016                 PMD_INIT_LOG(DEBUG, "Adding VF device");
1017
1018                 err = hn_vf_add(eth_dev, hv);
1019                 if (err)
1020                         hv->vf_present = 0;
1021         }
1022
1023         return 0;
1024
1025 failed:
1026         PMD_INIT_LOG(NOTICE, "device init failed");
1027
1028         hn_chim_uninit(eth_dev);
1029         hn_detach(hv);
1030         return err;
1031 }
1032
1033 static int
1034 eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
1035 {
1036         struct hn_data *hv = eth_dev->data->dev_private;
1037         int ret;
1038
1039         PMD_INIT_FUNC_TRACE();
1040
1041         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1042                 return 0;
1043
1044         hn_dev_stop(eth_dev);
1045         hn_dev_close(eth_dev);
1046
1047         eth_dev->dev_ops = NULL;
1048         eth_dev->tx_pkt_burst = NULL;
1049         eth_dev->rx_pkt_burst = NULL;
1050
1051         hn_detach(hv);
1052         hn_chim_uninit(eth_dev);
1053         rte_vmbus_chan_close(hv->primary->chan);
1054         rte_free(hv->primary);
1055         ret = rte_eth_dev_owner_delete(hv->owner.id);
1056         if (ret != 0)
1057                 return ret;
1058
1059         return 0;
1060 }
1061
1062 static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
1063                         struct rte_vmbus_device *dev)
1064 {
1065         struct rte_eth_dev *eth_dev;
1066         int ret;
1067
1068         PMD_INIT_FUNC_TRACE();
1069
1070         eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
1071         if (!eth_dev)
1072                 return -ENOMEM;
1073
1074         ret = eth_hn_dev_init(eth_dev);
1075         if (ret)
1076                 eth_dev_vmbus_release(eth_dev);
1077         else
1078                 rte_eth_dev_probing_finish(eth_dev);
1079
1080         return ret;
1081 }
1082
1083 static int eth_hn_remove(struct rte_vmbus_device *dev)
1084 {
1085         struct rte_eth_dev *eth_dev;
1086         int ret;
1087
1088         PMD_INIT_FUNC_TRACE();
1089
1090         eth_dev = rte_eth_dev_allocated(dev->device.name);
1091         if (!eth_dev)
1092                 return -ENODEV;
1093
1094         ret = eth_hn_dev_uninit(eth_dev);
1095         if (ret)
1096                 return ret;
1097
1098         eth_dev_vmbus_release(eth_dev);
1099         return 0;
1100 }
1101
1102 /* Network device GUID */
1103 static const rte_uuid_t hn_net_ids[] = {
1104         /*  f8615163-df3e-46c5-913f-f2d2f965ed0e */
1105         RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
1106         { 0 }
1107 };
1108
1109 static struct rte_vmbus_driver rte_netvsc_pmd = {
1110         .id_table = hn_net_ids,
1111         .probe = eth_hn_probe,
1112         .remove = eth_hn_remove,
1113 };
1114
1115 RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
1116 RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
1117
1118 RTE_INIT(hn_init_log)
1119 {
1120         hn_logtype_init = rte_log_register("pmd.net.netvsc.init");
1121         if (hn_logtype_init >= 0)
1122                 rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE);
1123         hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver");
1124         if (hn_logtype_driver >= 0)
1125                 rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE);
1126 }