1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2016-2018 Microsoft Corporation 3 * Copyright(c) 2013-2016 Brocade Communications Systems, Inc. 4 * All rights reserved. 5 */ 6 7 #include <stdint.h> 8 #include <string.h> 9 #include <stdio.h> 10 #include <errno.h> 11 #include <unistd.h> 12 13 #include <rte_ethdev.h> 14 #include <rte_memcpy.h> 15 #include <rte_string_fns.h> 16 #include <rte_memzone.h> 17 #include <rte_devargs.h> 18 #include <rte_malloc.h> 19 #include <rte_kvargs.h> 20 #include <rte_atomic.h> 21 #include <rte_branch_prediction.h> 22 #include <rte_ether.h> 23 #include <rte_ethdev_driver.h> 24 #include <rte_cycles.h> 25 #include <rte_errno.h> 26 #include <rte_memory.h> 27 #include <rte_eal.h> 28 #include <rte_dev.h> 29 #include <rte_bus_vmbus.h> 30 31 #include "hn_logs.h" 32 #include "hn_var.h" 33 #include "hn_rndis.h" 34 #include "hn_nvs.h" 35 #include "ndis.h" 36 37 #define HN_TX_OFFLOAD_CAPS (DEV_TX_OFFLOAD_IPV4_CKSUM | \ 38 DEV_TX_OFFLOAD_TCP_CKSUM | \ 39 DEV_TX_OFFLOAD_UDP_CKSUM | \ 40 DEV_TX_OFFLOAD_TCP_TSO | \ 41 DEV_TX_OFFLOAD_MULTI_SEGS | \ 42 DEV_TX_OFFLOAD_VLAN_INSERT) 43 44 #define HN_RX_OFFLOAD_CAPS (DEV_RX_OFFLOAD_CHECKSUM | \ 45 DEV_RX_OFFLOAD_VLAN_STRIP) 46 47 int hn_logtype_init; 48 int hn_logtype_driver; 49 50 struct hn_xstats_name_off { 51 char name[RTE_ETH_XSTATS_NAME_SIZE]; 52 unsigned int offset; 53 }; 54 55 static const struct hn_xstats_name_off hn_stat_strings[] = { 56 { "good_packets", offsetof(struct hn_stats, packets) }, 57 { "good_bytes", offsetof(struct hn_stats, bytes) }, 58 { "errors", offsetof(struct hn_stats, errors) }, 59 { "ring full", offsetof(struct hn_stats, ring_full) }, 60 { "multicast_packets", offsetof(struct hn_stats, multicast) }, 61 { "broadcast_packets", offsetof(struct hn_stats, broadcast) }, 62 { "undersize_packets", offsetof(struct hn_stats, size_bins[0]) }, 63 { "size_64_packets", offsetof(struct hn_stats, size_bins[1]) }, 64 { "size_65_127_packets", offsetof(struct hn_stats, size_bins[2]) }, 65 { "size_128_255_packets", offsetof(struct hn_stats, size_bins[3]) }, 66 { "size_256_511_packets", offsetof(struct hn_stats, size_bins[4]) }, 67 { "size_512_1023_packets", offsetof(struct hn_stats, size_bins[5]) }, 68 { "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) }, 69 { "size_1519_max_packets", offsetof(struct hn_stats, size_bins[7]) }, 70 }; 71 72 static struct rte_eth_dev * 73 eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size) 74 { 75 struct rte_eth_dev *eth_dev; 76 const char *name; 77 78 if (!dev) 79 return NULL; 80 81 name = dev->device.name; 82 83 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 84 eth_dev = rte_eth_dev_allocate(name); 85 if (!eth_dev) { 86 PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev"); 87 return NULL; 88 } 89 90 if (private_data_size) { 91 eth_dev->data->dev_private = 92 rte_zmalloc_socket(name, private_data_size, 93 RTE_CACHE_LINE_SIZE, dev->device.numa_node); 94 if (!eth_dev->data->dev_private) { 95 PMD_DRV_LOG(NOTICE, "can not allocate driver data"); 96 rte_eth_dev_release_port(eth_dev); 97 return NULL; 98 } 99 } 100 } else { 101 eth_dev = rte_eth_dev_attach_secondary(name); 102 if (!eth_dev) { 103 PMD_DRV_LOG(NOTICE, "can not attach secondary"); 104 return NULL; 105 } 106 } 107 108 eth_dev->device = &dev->device; 109 110 /* interrupt is simulated */ 111 dev->intr_handle.type = RTE_INTR_HANDLE_EXT; 112 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 113 eth_dev->intr_handle = &dev->intr_handle; 114 115 /* allow ethdev to remove on close */ 116 eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE; 117 118 return eth_dev; 119 } 120 121 static void 122 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev) 123 { 124 /* mac_addrs must not be freed alone because part of dev_private */ 125 eth_dev->data->mac_addrs = NULL; 126 /* free ether device */ 127 rte_eth_dev_release_port(eth_dev); 128 129 eth_dev->device = NULL; 130 eth_dev->intr_handle = NULL; 131 } 132 133 /* handle "latency=X" from devargs */ 134 static int hn_set_latency(const char *key, const char *value, void *opaque) 135 { 136 struct hn_data *hv = opaque; 137 char *endp = NULL; 138 unsigned long lat; 139 140 errno = 0; 141 lat = strtoul(value, &endp, 0); 142 143 if (*value == '\0' || *endp != '\0') { 144 PMD_DRV_LOG(ERR, "invalid parameter %s=%s", key, value); 145 return -EINVAL; 146 } 147 148 PMD_DRV_LOG(DEBUG, "set latency %lu usec", lat); 149 150 hv->latency = lat * 1000; /* usec to nsec */ 151 return 0; 152 } 153 154 /* Parse device arguments */ 155 static int hn_parse_args(const struct rte_eth_dev *dev) 156 { 157 struct hn_data *hv = dev->data->dev_private; 158 struct rte_devargs *devargs = dev->device->devargs; 159 static const char * const valid_keys[] = { 160 "latency", 161 NULL 162 }; 163 struct rte_kvargs *kvlist; 164 int ret; 165 166 if (!devargs) 167 return 0; 168 169 PMD_INIT_LOG(DEBUG, "device args %s %s", 170 devargs->name, devargs->args); 171 172 kvlist = rte_kvargs_parse(devargs->args, valid_keys); 173 if (!kvlist) { 174 PMD_DRV_LOG(NOTICE, "invalid parameters"); 175 return -EINVAL; 176 } 177 178 ret = rte_kvargs_process(kvlist, "latency", hn_set_latency, hv); 179 if (ret) 180 PMD_DRV_LOG(ERR, "Unable to process latency arg\n"); 181 182 rte_kvargs_free(kvlist); 183 return ret; 184 } 185 186 /* Update link status. 187 * Note: the DPDK definition of "wait_to_complete" 188 * means block this call until link is up. 189 * which is not worth supporting. 190 */ 191 int 192 hn_dev_link_update(struct rte_eth_dev *dev, 193 int wait_to_complete) 194 { 195 struct hn_data *hv = dev->data->dev_private; 196 struct rte_eth_link link, old; 197 int error; 198 199 old = dev->data->dev_link; 200 201 error = hn_rndis_get_linkstatus(hv); 202 if (error) 203 return error; 204 205 hn_rndis_get_linkspeed(hv); 206 207 hn_vf_link_update(dev, wait_to_complete); 208 209 link = (struct rte_eth_link) { 210 .link_duplex = ETH_LINK_FULL_DUPLEX, 211 .link_autoneg = ETH_LINK_SPEED_FIXED, 212 .link_speed = hv->link_speed / 10000, 213 }; 214 215 if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED) 216 link.link_status = ETH_LINK_UP; 217 else 218 link.link_status = ETH_LINK_DOWN; 219 220 if (old.link_status == link.link_status) 221 return 0; 222 223 PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id, 224 (link.link_status == ETH_LINK_UP) ? "up" : "down"); 225 226 return rte_eth_linkstatus_set(dev, &link); 227 } 228 229 static void hn_dev_info_get(struct rte_eth_dev *dev, 230 struct rte_eth_dev_info *dev_info) 231 { 232 struct hn_data *hv = dev->data->dev_private; 233 234 dev_info->speed_capa = ETH_LINK_SPEED_10G; 235 dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE; 236 dev_info->max_rx_pktlen = HN_MAX_XFER_LEN; 237 dev_info->max_mac_addrs = 1; 238 239 dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ; 240 dev_info->flow_type_rss_offloads = 241 ETH_RSS_IPV4 | ETH_RSS_IPV6 | ETH_RSS_TCP | ETH_RSS_UDP; 242 243 dev_info->max_rx_queues = hv->max_queues; 244 dev_info->max_tx_queues = hv->max_queues; 245 246 hn_rndis_get_offload(hv, dev_info); 247 hn_vf_info_get(hv, dev_info); 248 } 249 250 static void 251 hn_dev_promiscuous_enable(struct rte_eth_dev *dev) 252 { 253 struct hn_data *hv = dev->data->dev_private; 254 255 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS); 256 hn_vf_promiscuous_enable(dev); 257 } 258 259 static void 260 hn_dev_promiscuous_disable(struct rte_eth_dev *dev) 261 { 262 struct hn_data *hv = dev->data->dev_private; 263 uint32_t filter; 264 265 filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST; 266 if (dev->data->all_multicast) 267 filter |= NDIS_PACKET_TYPE_ALL_MULTICAST; 268 hn_rndis_set_rxfilter(hv, filter); 269 hn_vf_promiscuous_disable(dev); 270 } 271 272 static void 273 hn_dev_allmulticast_enable(struct rte_eth_dev *dev) 274 { 275 struct hn_data *hv = dev->data->dev_private; 276 277 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED | 278 NDIS_PACKET_TYPE_ALL_MULTICAST | 279 NDIS_PACKET_TYPE_BROADCAST); 280 hn_vf_allmulticast_enable(dev); 281 } 282 283 static void 284 hn_dev_allmulticast_disable(struct rte_eth_dev *dev) 285 { 286 struct hn_data *hv = dev->data->dev_private; 287 288 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED | 289 NDIS_PACKET_TYPE_BROADCAST); 290 hn_vf_allmulticast_disable(dev); 291 } 292 293 static int 294 hn_dev_mc_addr_list(struct rte_eth_dev *dev, 295 struct rte_ether_addr *mc_addr_set, 296 uint32_t nb_mc_addr) 297 { 298 /* No filtering on the synthetic path, but can do it on VF */ 299 return hn_vf_mc_addr_list(dev, mc_addr_set, nb_mc_addr); 300 } 301 302 /* Setup shared rx/tx queue data */ 303 static int hn_subchan_configure(struct hn_data *hv, 304 uint32_t subchan) 305 { 306 struct vmbus_channel *primary = hn_primary_chan(hv); 307 int err; 308 unsigned int retry = 0; 309 310 PMD_DRV_LOG(DEBUG, 311 "open %u subchannels", subchan); 312 313 /* Send create sub channels command */ 314 err = hn_nvs_alloc_subchans(hv, &subchan); 315 if (err) 316 return err; 317 318 while (subchan > 0) { 319 struct vmbus_channel *new_sc; 320 uint16_t chn_index; 321 322 err = rte_vmbus_subchan_open(primary, &new_sc); 323 if (err == -ENOENT && ++retry < 1000) { 324 /* This can happen if not ready yet */ 325 rte_delay_ms(10); 326 continue; 327 } 328 329 if (err) { 330 PMD_DRV_LOG(ERR, 331 "open subchannel failed: %d", err); 332 return err; 333 } 334 335 rte_vmbus_set_latency(hv->vmbus, new_sc, hv->latency); 336 337 retry = 0; 338 chn_index = rte_vmbus_sub_channel_index(new_sc); 339 if (chn_index == 0 || chn_index > hv->max_queues) { 340 PMD_DRV_LOG(ERR, 341 "Invalid subchannel offermsg channel %u", 342 chn_index); 343 return -EIO; 344 } 345 346 PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index); 347 hv->channels[chn_index] = new_sc; 348 --subchan; 349 } 350 351 return err; 352 } 353 354 static int hn_dev_configure(struct rte_eth_dev *dev) 355 { 356 const struct rte_eth_conf *dev_conf = &dev->data->dev_conf; 357 const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode; 358 const struct rte_eth_txmode *txmode = &dev_conf->txmode; 359 360 const struct rte_eth_rss_conf *rss_conf = 361 &dev_conf->rx_adv_conf.rss_conf; 362 struct hn_data *hv = dev->data->dev_private; 363 uint64_t unsupported; 364 int err, subchan; 365 366 PMD_INIT_FUNC_TRACE(); 367 368 unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS; 369 if (unsupported) { 370 PMD_DRV_LOG(NOTICE, 371 "unsupported TX offload: %#" PRIx64, 372 unsupported); 373 return -EINVAL; 374 } 375 376 unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS; 377 if (unsupported) { 378 PMD_DRV_LOG(NOTICE, 379 "unsupported RX offload: %#" PRIx64, 380 rxmode->offloads); 381 return -EINVAL; 382 } 383 384 hv->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 385 386 err = hn_rndis_conf_offload(hv, txmode->offloads, 387 rxmode->offloads); 388 if (err) { 389 PMD_DRV_LOG(NOTICE, 390 "offload configure failed"); 391 return err; 392 } 393 394 hv->num_queues = RTE_MAX(dev->data->nb_rx_queues, 395 dev->data->nb_tx_queues); 396 subchan = hv->num_queues - 1; 397 if (subchan > 0) { 398 err = hn_subchan_configure(hv, subchan); 399 if (err) { 400 PMD_DRV_LOG(NOTICE, 401 "subchannel configuration failed"); 402 return err; 403 } 404 405 err = hn_rndis_conf_rss(hv, rss_conf); 406 if (err) { 407 PMD_DRV_LOG(NOTICE, 408 "rss configuration failed"); 409 return err; 410 } 411 } 412 413 return hn_vf_configure(dev, dev_conf); 414 } 415 416 static int hn_dev_stats_get(struct rte_eth_dev *dev, 417 struct rte_eth_stats *stats) 418 { 419 unsigned int i; 420 421 hn_vf_stats_get(dev, stats); 422 423 for (i = 0; i < dev->data->nb_tx_queues; i++) { 424 const struct hn_tx_queue *txq = dev->data->tx_queues[i]; 425 426 if (!txq) 427 continue; 428 429 stats->opackets += txq->stats.packets; 430 stats->obytes += txq->stats.bytes; 431 stats->oerrors += txq->stats.errors; 432 433 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 434 stats->q_opackets[i] = txq->stats.packets; 435 stats->q_obytes[i] = txq->stats.bytes; 436 } 437 } 438 439 for (i = 0; i < dev->data->nb_rx_queues; i++) { 440 const struct hn_rx_queue *rxq = dev->data->rx_queues[i]; 441 442 if (!rxq) 443 continue; 444 445 stats->ipackets += rxq->stats.packets; 446 stats->ibytes += rxq->stats.bytes; 447 stats->ierrors += rxq->stats.errors; 448 stats->imissed += rxq->stats.ring_full; 449 450 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 451 stats->q_ipackets[i] = rxq->stats.packets; 452 stats->q_ibytes[i] = rxq->stats.bytes; 453 } 454 } 455 456 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 457 return 0; 458 } 459 460 static void 461 hn_dev_stats_reset(struct rte_eth_dev *dev) 462 { 463 unsigned int i; 464 465 PMD_INIT_FUNC_TRACE(); 466 467 for (i = 0; i < dev->data->nb_tx_queues; i++) { 468 struct hn_tx_queue *txq = dev->data->tx_queues[i]; 469 470 if (!txq) 471 continue; 472 memset(&txq->stats, 0, sizeof(struct hn_stats)); 473 } 474 475 for (i = 0; i < dev->data->nb_rx_queues; i++) { 476 struct hn_rx_queue *rxq = dev->data->rx_queues[i]; 477 478 if (!rxq) 479 continue; 480 481 memset(&rxq->stats, 0, sizeof(struct hn_stats)); 482 } 483 } 484 485 static void 486 hn_dev_xstats_reset(struct rte_eth_dev *dev) 487 { 488 hn_dev_stats_reset(dev); 489 hn_vf_xstats_reset(dev); 490 } 491 492 static int 493 hn_dev_xstats_count(struct rte_eth_dev *dev) 494 { 495 int ret, count; 496 497 count = dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings); 498 count += dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings); 499 500 ret = hn_vf_xstats_get_names(dev, NULL, 0); 501 if (ret < 0) 502 return ret; 503 504 return count + ret; 505 } 506 507 static int 508 hn_dev_xstats_get_names(struct rte_eth_dev *dev, 509 struct rte_eth_xstat_name *xstats_names, 510 unsigned int limit) 511 { 512 unsigned int i, t, count = 0; 513 int ret; 514 515 if (!xstats_names) 516 return hn_dev_xstats_count(dev); 517 518 /* Note: limit checked in rte_eth_xstats_names() */ 519 for (i = 0; i < dev->data->nb_tx_queues; i++) { 520 const struct hn_tx_queue *txq = dev->data->tx_queues[i]; 521 522 if (!txq) 523 continue; 524 525 if (count >= limit) 526 break; 527 528 for (t = 0; t < RTE_DIM(hn_stat_strings); t++) 529 snprintf(xstats_names[count++].name, 530 RTE_ETH_XSTATS_NAME_SIZE, 531 "tx_q%u_%s", i, hn_stat_strings[t].name); 532 } 533 534 for (i = 0; i < dev->data->nb_rx_queues; i++) { 535 const struct hn_rx_queue *rxq = dev->data->rx_queues[i]; 536 537 if (!rxq) 538 continue; 539 540 if (count >= limit) 541 break; 542 543 for (t = 0; t < RTE_DIM(hn_stat_strings); t++) 544 snprintf(xstats_names[count++].name, 545 RTE_ETH_XSTATS_NAME_SIZE, 546 "rx_q%u_%s", i, 547 hn_stat_strings[t].name); 548 } 549 550 ret = hn_vf_xstats_get_names(dev, xstats_names + count, 551 limit - count); 552 if (ret < 0) 553 return ret; 554 555 return count + ret; 556 } 557 558 static int 559 hn_dev_xstats_get(struct rte_eth_dev *dev, 560 struct rte_eth_xstat *xstats, 561 unsigned int n) 562 { 563 unsigned int i, t, count = 0; 564 const unsigned int nstats = hn_dev_xstats_count(dev); 565 const char *stats; 566 int ret; 567 568 PMD_INIT_FUNC_TRACE(); 569 570 if (n < nstats) 571 return nstats; 572 573 for (i = 0; i < dev->data->nb_tx_queues; i++) { 574 const struct hn_tx_queue *txq = dev->data->tx_queues[i]; 575 576 if (!txq) 577 continue; 578 579 stats = (const char *)&txq->stats; 580 for (t = 0; t < RTE_DIM(hn_stat_strings); t++) 581 xstats[count++].value = *(const uint64_t *) 582 (stats + hn_stat_strings[t].offset); 583 } 584 585 for (i = 0; i < dev->data->nb_rx_queues; i++) { 586 const struct hn_rx_queue *rxq = dev->data->rx_queues[i]; 587 588 if (!rxq) 589 continue; 590 591 stats = (const char *)&rxq->stats; 592 for (t = 0; t < RTE_DIM(hn_stat_strings); t++) 593 xstats[count++].value = *(const uint64_t *) 594 (stats + hn_stat_strings[t].offset); 595 } 596 597 ret = hn_vf_xstats_get(dev, xstats + count, n - count); 598 if (ret < 0) 599 return ret; 600 601 return count + ret; 602 } 603 604 static int 605 hn_dev_start(struct rte_eth_dev *dev) 606 { 607 struct hn_data *hv = dev->data->dev_private; 608 int error; 609 610 PMD_INIT_FUNC_TRACE(); 611 612 error = hn_rndis_set_rxfilter(hv, 613 NDIS_PACKET_TYPE_BROADCAST | 614 NDIS_PACKET_TYPE_ALL_MULTICAST | 615 NDIS_PACKET_TYPE_DIRECTED); 616 if (error) 617 return error; 618 619 error = hn_vf_start(dev); 620 if (error) 621 hn_rndis_set_rxfilter(hv, 0); 622 623 return error; 624 } 625 626 static void 627 hn_dev_stop(struct rte_eth_dev *dev) 628 { 629 struct hn_data *hv = dev->data->dev_private; 630 631 PMD_INIT_FUNC_TRACE(); 632 633 hn_rndis_set_rxfilter(hv, 0); 634 hn_vf_stop(dev); 635 } 636 637 static void 638 hn_dev_close(struct rte_eth_dev *dev) 639 { 640 PMD_INIT_FUNC_TRACE(); 641 642 hn_vf_close(dev); 643 hn_dev_free_queues(dev); 644 } 645 646 static const struct eth_dev_ops hn_eth_dev_ops = { 647 .dev_configure = hn_dev_configure, 648 .dev_start = hn_dev_start, 649 .dev_stop = hn_dev_stop, 650 .dev_close = hn_dev_close, 651 .dev_infos_get = hn_dev_info_get, 652 .dev_supported_ptypes_get = hn_vf_supported_ptypes, 653 .promiscuous_enable = hn_dev_promiscuous_enable, 654 .promiscuous_disable = hn_dev_promiscuous_disable, 655 .allmulticast_enable = hn_dev_allmulticast_enable, 656 .allmulticast_disable = hn_dev_allmulticast_disable, 657 .set_mc_addr_list = hn_dev_mc_addr_list, 658 .tx_queue_setup = hn_dev_tx_queue_setup, 659 .tx_queue_release = hn_dev_tx_queue_release, 660 .tx_done_cleanup = hn_dev_tx_done_cleanup, 661 .rx_queue_setup = hn_dev_rx_queue_setup, 662 .rx_queue_release = hn_dev_rx_queue_release, 663 .link_update = hn_dev_link_update, 664 .stats_get = hn_dev_stats_get, 665 .stats_reset = hn_dev_stats_reset, 666 .xstats_get = hn_dev_xstats_get, 667 .xstats_get_names = hn_dev_xstats_get_names, 668 .xstats_reset = hn_dev_xstats_reset, 669 }; 670 671 /* 672 * Setup connection between PMD and kernel. 673 */ 674 static int 675 hn_attach(struct hn_data *hv, unsigned int mtu) 676 { 677 int error; 678 679 /* Attach NVS */ 680 error = hn_nvs_attach(hv, mtu); 681 if (error) 682 goto failed_nvs; 683 684 /* Attach RNDIS */ 685 error = hn_rndis_attach(hv); 686 if (error) 687 goto failed_rndis; 688 689 /* 690 * NOTE: 691 * Under certain conditions on certain versions of Hyper-V, 692 * the RNDIS rxfilter is _not_ zero on the hypervisor side 693 * after the successful RNDIS initialization. 694 */ 695 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE); 696 return 0; 697 failed_rndis: 698 hn_nvs_detach(hv); 699 failed_nvs: 700 return error; 701 } 702 703 static void 704 hn_detach(struct hn_data *hv) 705 { 706 hn_nvs_detach(hv); 707 hn_rndis_detach(hv); 708 } 709 710 static int 711 eth_hn_dev_init(struct rte_eth_dev *eth_dev) 712 { 713 struct hn_data *hv = eth_dev->data->dev_private; 714 struct rte_device *device = eth_dev->device; 715 struct rte_vmbus_device *vmbus; 716 unsigned int rxr_cnt; 717 int err, max_chan; 718 719 PMD_INIT_FUNC_TRACE(); 720 721 vmbus = container_of(device, struct rte_vmbus_device, device); 722 eth_dev->dev_ops = &hn_eth_dev_ops; 723 eth_dev->tx_pkt_burst = &hn_xmit_pkts; 724 eth_dev->rx_pkt_burst = &hn_recv_pkts; 725 726 /* 727 * for secondary processes, we don't initialize any further as primary 728 * has already done this work. 729 */ 730 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 731 return 0; 732 733 /* Since Hyper-V only supports one MAC address, just use local data */ 734 eth_dev->data->mac_addrs = &hv->mac_addr; 735 736 hv->vmbus = vmbus; 737 hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP]; 738 hv->chim_res = &vmbus->resource[HV_SEND_BUF_MAP]; 739 hv->port_id = eth_dev->data->port_id; 740 hv->latency = HN_CHAN_LATENCY_NS; 741 hv->max_queues = 1; 742 hv->vf_port = HN_INVALID_PORT; 743 744 err = hn_parse_args(eth_dev); 745 if (err) 746 return err; 747 748 strlcpy(hv->owner.name, eth_dev->device->name, 749 RTE_ETH_MAX_OWNER_NAME_LEN); 750 err = rte_eth_dev_owner_new(&hv->owner.id); 751 if (err) { 752 PMD_INIT_LOG(ERR, "Can not get owner id"); 753 return err; 754 } 755 756 /* Initialize primary channel input for control operations */ 757 err = rte_vmbus_chan_open(vmbus, &hv->channels[0]); 758 if (err) 759 return err; 760 761 rte_vmbus_set_latency(hv->vmbus, hv->channels[0], hv->latency); 762 763 hv->primary = hn_rx_queue_alloc(hv, 0, 764 eth_dev->device->numa_node); 765 766 if (!hv->primary) 767 return -ENOMEM; 768 769 err = hn_attach(hv, RTE_ETHER_MTU); 770 if (err) 771 goto failed; 772 773 err = hn_tx_pool_init(eth_dev); 774 if (err) 775 goto failed; 776 777 err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes); 778 if (err) 779 goto failed; 780 781 /* Multi queue requires later versions of windows server */ 782 if (hv->nvs_ver < NVS_VERSION_5) 783 return 0; 784 785 max_chan = rte_vmbus_max_channels(vmbus); 786 PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan); 787 if (max_chan <= 0) 788 goto failed; 789 790 if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0) 791 rxr_cnt = 1; 792 793 hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan); 794 795 /* If VF was reported but not added, do it now */ 796 if (hv->vf_present && !hn_vf_attached(hv)) { 797 PMD_INIT_LOG(DEBUG, "Adding VF device"); 798 799 err = hn_vf_add(eth_dev, hv); 800 if (err) 801 hv->vf_present = 0; 802 } 803 804 return 0; 805 806 failed: 807 PMD_INIT_LOG(NOTICE, "device init failed"); 808 809 hn_tx_pool_uninit(eth_dev); 810 hn_detach(hv); 811 return err; 812 } 813 814 static int 815 eth_hn_dev_uninit(struct rte_eth_dev *eth_dev) 816 { 817 struct hn_data *hv = eth_dev->data->dev_private; 818 819 PMD_INIT_FUNC_TRACE(); 820 821 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 822 return 0; 823 824 hn_dev_stop(eth_dev); 825 hn_dev_close(eth_dev); 826 827 eth_dev->dev_ops = NULL; 828 eth_dev->tx_pkt_burst = NULL; 829 eth_dev->rx_pkt_burst = NULL; 830 831 hn_detach(hv); 832 hn_tx_pool_uninit(eth_dev); 833 rte_vmbus_chan_close(hv->primary->chan); 834 rte_free(hv->primary); 835 rte_eth_dev_owner_delete(hv->owner.id); 836 837 return 0; 838 } 839 840 static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused, 841 struct rte_vmbus_device *dev) 842 { 843 struct rte_eth_dev *eth_dev; 844 int ret; 845 846 PMD_INIT_FUNC_TRACE(); 847 848 eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data)); 849 if (!eth_dev) 850 return -ENOMEM; 851 852 ret = eth_hn_dev_init(eth_dev); 853 if (ret) 854 eth_dev_vmbus_release(eth_dev); 855 else 856 rte_eth_dev_probing_finish(eth_dev); 857 858 return ret; 859 } 860 861 static int eth_hn_remove(struct rte_vmbus_device *dev) 862 { 863 struct rte_eth_dev *eth_dev; 864 int ret; 865 866 PMD_INIT_FUNC_TRACE(); 867 868 eth_dev = rte_eth_dev_allocated(dev->device.name); 869 if (!eth_dev) 870 return -ENODEV; 871 872 ret = eth_hn_dev_uninit(eth_dev); 873 if (ret) 874 return ret; 875 876 eth_dev_vmbus_release(eth_dev); 877 return 0; 878 } 879 880 /* Network device GUID */ 881 static const rte_uuid_t hn_net_ids[] = { 882 /* f8615163-df3e-46c5-913f-f2d2f965ed0e */ 883 RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL), 884 { 0 } 885 }; 886 887 static struct rte_vmbus_driver rte_netvsc_pmd = { 888 .id_table = hn_net_ids, 889 .probe = eth_hn_probe, 890 .remove = eth_hn_remove, 891 }; 892 893 RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd); 894 RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic"); 895 896 RTE_INIT(hn_init_log) 897 { 898 hn_logtype_init = rte_log_register("pmd.net.netvsc.init"); 899 if (hn_logtype_init >= 0) 900 rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE); 901 hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver"); 902 if (hn_logtype_driver >= 0) 903 rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE); 904 } 905