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