1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2016 Intel Corporation 3 */ 4 5 #include <stdint.h> 6 #include <string.h> 7 #include <stdio.h> 8 #include <stdlib.h> 9 #include <errno.h> 10 #include <unistd.h> 11 12 #include <ethdev_driver.h> 13 #include <rte_memcpy.h> 14 #include <rte_string_fns.h> 15 #include <rte_memzone.h> 16 #include <rte_malloc.h> 17 #include <rte_branch_prediction.h> 18 #include <rte_ether.h> 19 #include <rte_ip.h> 20 #include <rte_arp.h> 21 #include <rte_common.h> 22 #include <rte_errno.h> 23 #include <rte_cpuflags.h> 24 #include <rte_vect.h> 25 #include <rte_memory.h> 26 #include <rte_eal_paging.h> 27 #include <rte_eal.h> 28 #include <dev_driver.h> 29 #include <rte_cycles.h> 30 #include <rte_kvargs.h> 31 32 #include "virtio_ethdev.h" 33 #include "virtio.h" 34 #include "virtio_logs.h" 35 #include "virtqueue.h" 36 #include "virtio_cvq.h" 37 #include "virtio_rxtx.h" 38 #include "virtio_rxtx_simple.h" 39 #include "virtio_user/virtio_user_dev.h" 40 41 static int virtio_dev_configure(struct rte_eth_dev *dev); 42 static int virtio_dev_start(struct rte_eth_dev *dev); 43 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev); 44 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev); 45 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 46 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 47 static uint32_t virtio_dev_speed_capa_get(uint32_t speed); 48 static int virtio_dev_devargs_parse(struct rte_devargs *devargs, 49 uint32_t *speed, 50 int *vectorized); 51 static int virtio_dev_info_get(struct rte_eth_dev *dev, 52 struct rte_eth_dev_info *dev_info); 53 static int virtio_dev_link_update(struct rte_eth_dev *dev, 54 int wait_to_complete); 55 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask); 56 static int virtio_dev_rss_hash_update(struct rte_eth_dev *dev, 57 struct rte_eth_rss_conf *rss_conf); 58 static int virtio_dev_rss_hash_conf_get(struct rte_eth_dev *dev, 59 struct rte_eth_rss_conf *rss_conf); 60 static int virtio_dev_rss_reta_update(struct rte_eth_dev *dev, 61 struct rte_eth_rss_reta_entry64 *reta_conf, 62 uint16_t reta_size); 63 static int virtio_dev_rss_reta_query(struct rte_eth_dev *dev, 64 struct rte_eth_rss_reta_entry64 *reta_conf, 65 uint16_t reta_size); 66 67 static void virtio_set_hwaddr(struct virtio_hw *hw); 68 static void virtio_get_hwaddr(struct virtio_hw *hw); 69 70 static int virtio_dev_stats_get(struct rte_eth_dev *dev, 71 struct rte_eth_stats *stats); 72 static int virtio_dev_xstats_get(struct rte_eth_dev *dev, 73 struct rte_eth_xstat *xstats, unsigned n); 74 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 75 struct rte_eth_xstat_name *xstats_names, 76 unsigned limit); 77 static int virtio_dev_stats_reset(struct rte_eth_dev *dev); 78 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev); 79 static int virtio_vlan_filter_set(struct rte_eth_dev *dev, 80 uint16_t vlan_id, int on); 81 static int virtio_mac_addr_add(struct rte_eth_dev *dev, 82 struct rte_ether_addr *mac_addr, 83 uint32_t index, uint32_t vmdq); 84 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); 85 static int virtio_mac_addr_set(struct rte_eth_dev *dev, 86 struct rte_ether_addr *mac_addr); 87 88 static int virtio_intr_disable(struct rte_eth_dev *dev); 89 static int virtio_get_monitor_addr(void *rx_queue, 90 struct rte_power_monitor_cond *pmc); 91 92 static int virtio_dev_queue_stats_mapping_set( 93 struct rte_eth_dev *eth_dev, 94 uint16_t queue_id, 95 uint8_t stat_idx, 96 uint8_t is_rx); 97 98 static void virtio_notify_peers(struct rte_eth_dev *dev); 99 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 100 101 struct rte_virtio_xstats_name_off { 102 char name[RTE_ETH_XSTATS_NAME_SIZE]; 103 unsigned offset; 104 }; 105 106 /* [rt]x_qX_ is prepended to the name string here */ 107 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 108 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 109 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 110 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 111 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 112 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 113 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 114 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 115 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 116 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 117 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 118 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 119 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 120 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 121 }; 122 123 /* [rt]x_qX_ is prepended to the name string here */ 124 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 125 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 126 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 127 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 128 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 129 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 130 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 131 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 132 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 133 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 134 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 135 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 136 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 137 }; 138 139 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 140 sizeof(rte_virtio_rxq_stat_strings[0])) 141 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 142 sizeof(rte_virtio_txq_stat_strings[0])) 143 144 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 145 146 static int 147 virtio_set_multiple_queues_rss(struct rte_eth_dev *dev, uint16_t nb_queues) 148 { 149 struct virtio_hw *hw = dev->data->dev_private; 150 struct virtio_pmd_ctrl ctrl; 151 struct virtio_net_ctrl_rss rss; 152 int dlen, ret; 153 154 rss.hash_types = hw->rss_hash_types & VIRTIO_NET_HASH_TYPE_MASK; 155 RTE_BUILD_BUG_ON(!RTE_IS_POWER_OF_2(VIRTIO_NET_RSS_RETA_SIZE)); 156 rss.indirection_table_mask = VIRTIO_NET_RSS_RETA_SIZE - 1; 157 rss.unclassified_queue = 0; 158 memcpy(rss.indirection_table, hw->rss_reta, VIRTIO_NET_RSS_RETA_SIZE * sizeof(uint16_t)); 159 rss.max_tx_vq = nb_queues; 160 rss.hash_key_length = VIRTIO_NET_RSS_KEY_SIZE; 161 memcpy(rss.hash_key_data, hw->rss_key, VIRTIO_NET_RSS_KEY_SIZE); 162 163 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 164 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_RSS_CONFIG; 165 memcpy(ctrl.data, &rss, sizeof(rss)); 166 167 dlen = sizeof(rss); 168 169 ret = virtio_send_command(hw->cvq, &ctrl, &dlen, 1); 170 if (ret) { 171 PMD_INIT_LOG(ERR, "RSS multiqueue configured but send command failed"); 172 return -EINVAL; 173 } 174 175 return 0; 176 } 177 178 static int 179 virtio_set_multiple_queues_auto(struct rte_eth_dev *dev, uint16_t nb_queues) 180 { 181 struct virtio_hw *hw = dev->data->dev_private; 182 struct virtio_pmd_ctrl ctrl; 183 int dlen; 184 int ret; 185 186 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 187 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 188 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 189 190 dlen = sizeof(uint16_t); 191 192 ret = virtio_send_command(hw->cvq, &ctrl, &dlen, 1); 193 if (ret) { 194 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 195 "failed, this is too late now..."); 196 return -EINVAL; 197 } 198 199 return 0; 200 } 201 202 static int 203 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 204 { 205 struct virtio_hw *hw = dev->data->dev_private; 206 207 if (virtio_with_feature(hw, VIRTIO_NET_F_RSS)) 208 return virtio_set_multiple_queues_rss(dev, nb_queues); 209 else 210 return virtio_set_multiple_queues_auto(dev, nb_queues); 211 } 212 213 static uint16_t 214 virtio_get_nr_vq(struct virtio_hw *hw) 215 { 216 uint16_t nr_vq = hw->max_queue_pairs * 2; 217 218 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 219 nr_vq += 1; 220 221 return nr_vq; 222 } 223 224 static void 225 virtio_control_queue_notify(struct virtqueue *vq, __rte_unused void *cookie) 226 { 227 virtqueue_notify(vq); 228 } 229 230 static int 231 virtio_init_queue(struct rte_eth_dev *dev, uint16_t queue_idx) 232 { 233 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 234 unsigned int vq_size; 235 struct virtio_hw *hw = dev->data->dev_private; 236 struct virtqueue *vq; 237 int queue_type = virtio_get_queue_type(hw, queue_idx); 238 int ret; 239 int numa_node = dev->device->numa_node; 240 241 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 242 queue_idx, numa_node); 243 244 /* 245 * Read the virtqueue size from the Queue Size field 246 * Always power of 2 and if 0 virtqueue does not exist 247 */ 248 vq_size = VIRTIO_OPS(hw)->get_queue_num(hw, queue_idx); 249 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 250 if (vq_size == 0) { 251 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 252 return -EINVAL; 253 } 254 255 if (!virtio_with_packed_queue(hw) && !rte_is_power_of_2(vq_size)) { 256 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2"); 257 return -EINVAL; 258 } 259 260 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", dev->data->port_id, queue_idx); 261 262 vq = virtqueue_alloc(hw, queue_idx, vq_size, queue_type, numa_node, vq_name); 263 if (!vq) { 264 PMD_INIT_LOG(ERR, "virtqueue init failed"); 265 return -ENOMEM; 266 } 267 268 hw->vqs[queue_idx] = vq; 269 270 if (queue_type == VTNET_CQ) { 271 hw->cvq = &vq->cq; 272 vq->cq.notify_queue = &virtio_control_queue_notify; 273 } 274 275 if (VIRTIO_OPS(hw)->setup_queue(hw, vq) < 0) { 276 PMD_INIT_LOG(ERR, "setup_queue failed"); 277 ret = -EINVAL; 278 goto clean_vq; 279 } 280 281 return 0; 282 283 clean_vq: 284 if (queue_type == VTNET_CQ) 285 hw->cvq = NULL; 286 virtqueue_free(vq); 287 hw->vqs[queue_idx] = NULL; 288 289 return ret; 290 } 291 292 static void 293 virtio_free_queues(struct virtio_hw *hw) 294 { 295 uint16_t nr_vq = virtio_get_nr_vq(hw); 296 struct virtqueue *vq; 297 uint16_t i; 298 299 if (hw->vqs == NULL) 300 return; 301 302 for (i = 0; i < nr_vq; i++) { 303 vq = hw->vqs[i]; 304 if (!vq) 305 continue; 306 virtqueue_free(vq); 307 hw->vqs[i] = NULL; 308 } 309 310 rte_free(hw->vqs); 311 hw->vqs = NULL; 312 } 313 314 static int 315 virtio_alloc_queues(struct rte_eth_dev *dev) 316 { 317 struct virtio_hw *hw = dev->data->dev_private; 318 uint16_t nr_vq = virtio_get_nr_vq(hw); 319 uint16_t i; 320 int ret; 321 322 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 323 if (!hw->vqs) { 324 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 325 return -ENOMEM; 326 } 327 328 for (i = 0; i < nr_vq; i++) { 329 ret = virtio_init_queue(dev, i); 330 if (ret < 0) { 331 virtio_free_queues(hw); 332 return ret; 333 } 334 } 335 336 return 0; 337 } 338 339 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 340 341 static void 342 virtio_free_rss(struct virtio_hw *hw) 343 { 344 rte_free(hw->rss_key); 345 hw->rss_key = NULL; 346 347 rte_free(hw->rss_reta); 348 hw->rss_reta = NULL; 349 } 350 351 int 352 virtio_dev_close(struct rte_eth_dev *dev) 353 { 354 struct virtio_hw *hw = dev->data->dev_private; 355 struct rte_eth_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 356 357 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 358 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 359 return 0; 360 361 if (!hw->opened) 362 return 0; 363 hw->opened = 0; 364 365 /* reset the NIC */ 366 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 367 VIRTIO_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 368 if (intr_conf->rxq) 369 virtio_queues_unbind_intr(dev); 370 371 if (intr_conf->lsc || intr_conf->rxq) { 372 virtio_intr_disable(dev); 373 rte_intr_efd_disable(dev->intr_handle); 374 rte_intr_vec_list_free(dev->intr_handle); 375 } 376 377 virtio_reset(hw); 378 virtio_dev_free_mbufs(dev); 379 virtio_free_queues(hw); 380 virtio_free_rss(hw); 381 382 return VIRTIO_OPS(hw)->dev_close(hw); 383 } 384 385 static int 386 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 387 { 388 struct virtio_hw *hw = dev->data->dev_private; 389 struct virtio_pmd_ctrl ctrl; 390 int dlen[1]; 391 int ret; 392 393 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 394 PMD_INIT_LOG(INFO, "host does not support rx control"); 395 return -ENOTSUP; 396 } 397 398 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 399 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 400 ctrl.data[0] = 1; 401 dlen[0] = 1; 402 403 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 404 if (ret) { 405 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 406 return -EAGAIN; 407 } 408 409 return 0; 410 } 411 412 static int 413 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 414 { 415 struct virtio_hw *hw = dev->data->dev_private; 416 struct virtio_pmd_ctrl ctrl; 417 int dlen[1]; 418 int ret; 419 420 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 421 PMD_INIT_LOG(INFO, "host does not support rx control"); 422 return -ENOTSUP; 423 } 424 425 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 426 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 427 ctrl.data[0] = 0; 428 dlen[0] = 1; 429 430 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 431 if (ret) { 432 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 433 return -EAGAIN; 434 } 435 436 return 0; 437 } 438 439 static int 440 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 441 { 442 struct virtio_hw *hw = dev->data->dev_private; 443 struct virtio_pmd_ctrl ctrl; 444 int dlen[1]; 445 int ret; 446 447 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 448 PMD_INIT_LOG(INFO, "host does not support rx control"); 449 return -ENOTSUP; 450 } 451 452 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 453 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 454 ctrl.data[0] = 1; 455 dlen[0] = 1; 456 457 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 458 if (ret) { 459 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 460 return -EAGAIN; 461 } 462 463 return 0; 464 } 465 466 static int 467 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 468 { 469 struct virtio_hw *hw = dev->data->dev_private; 470 struct virtio_pmd_ctrl ctrl; 471 int dlen[1]; 472 int ret; 473 474 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 475 PMD_INIT_LOG(INFO, "host does not support rx control"); 476 return -ENOTSUP; 477 } 478 479 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 480 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 481 ctrl.data[0] = 0; 482 dlen[0] = 1; 483 484 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 485 if (ret) { 486 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 487 return -EAGAIN; 488 } 489 490 return 0; 491 } 492 493 uint16_t 494 virtio_rx_mem_pool_buf_size(struct rte_mempool *mp) 495 { 496 return rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM; 497 } 498 499 bool 500 virtio_rx_check_scatter(uint16_t max_rx_pkt_len, uint16_t rx_buf_size, 501 bool rx_scatter_enabled, const char **error) 502 { 503 if (!rx_scatter_enabled && max_rx_pkt_len > rx_buf_size) { 504 *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small"; 505 return false; 506 } 507 508 return true; 509 } 510 511 static bool 512 virtio_check_scatter_on_all_rx_queues(struct rte_eth_dev *dev, 513 uint16_t frame_size) 514 { 515 struct virtio_hw *hw = dev->data->dev_private; 516 struct virtnet_rx *rxvq; 517 struct virtqueue *vq; 518 unsigned int qidx; 519 uint16_t buf_size; 520 const char *error; 521 522 if (hw->vqs == NULL) 523 return true; 524 525 for (qidx = 0; qidx < hw->max_queue_pairs; qidx++) { 526 vq = hw->vqs[2 * qidx + VTNET_SQ_RQ_QUEUE_IDX]; 527 if (vq == NULL) 528 continue; 529 530 rxvq = &vq->rxq; 531 if (rxvq->mpool == NULL) 532 continue; 533 buf_size = virtio_rx_mem_pool_buf_size(rxvq->mpool); 534 535 if (!virtio_rx_check_scatter(frame_size, buf_size, 536 hw->rx_ol_scatter, &error)) { 537 PMD_INIT_LOG(ERR, "MTU check for RxQ %u failed: %s", 538 qidx, error); 539 return false; 540 } 541 } 542 543 return true; 544 } 545 546 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 547 static int 548 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 549 { 550 struct virtio_hw *hw = dev->data->dev_private; 551 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 552 hw->vtnet_hdr_size; 553 uint32_t frame_size = mtu + ether_hdr_len; 554 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 555 556 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 557 558 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 559 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 560 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 561 return -EINVAL; 562 } 563 564 if (!virtio_check_scatter_on_all_rx_queues(dev, frame_size)) { 565 PMD_INIT_LOG(ERR, "MTU vs Rx scatter and Rx buffers check failed"); 566 return -EINVAL; 567 } 568 569 hw->max_rx_pkt_len = frame_size; 570 571 return 0; 572 } 573 574 static int 575 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 576 { 577 struct virtio_hw *hw = dev->data->dev_private; 578 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 579 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 580 581 virtqueue_enable_intr(vq); 582 virtio_mb(hw->weak_barriers); 583 return 0; 584 } 585 586 static int 587 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 588 { 589 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 590 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 591 592 virtqueue_disable_intr(vq); 593 return 0; 594 } 595 596 static int 597 virtio_dev_priv_dump(struct rte_eth_dev *dev, FILE *f) 598 { 599 struct virtio_hw *hw = dev->data->dev_private; 600 601 fprintf(f, "guest_features: 0x%" PRIx64 "\n", hw->guest_features); 602 fprintf(f, "vtnet_hdr_size: %u\n", hw->vtnet_hdr_size); 603 fprintf(f, "use_vec: rx-%u tx-%u\n", hw->use_vec_rx, hw->use_vec_tx); 604 fprintf(f, "use_inorder: rx-%u tx-%u\n", hw->use_inorder_rx, hw->use_inorder_tx); 605 fprintf(f, "intr_lsc: %u\n", hw->intr_lsc); 606 fprintf(f, "max_mtu: %u\n", hw->max_mtu); 607 fprintf(f, "max_rx_pkt_len: %zu\n", hw->max_rx_pkt_len); 608 fprintf(f, "max_queue_pairs: %u\n", hw->max_queue_pairs); 609 fprintf(f, "req_guest_features: 0x%" PRIx64 "\n", hw->req_guest_features); 610 611 return 0; 612 } 613 614 /* 615 * dev_ops for virtio, bare necessities for basic operation 616 */ 617 static const struct eth_dev_ops virtio_eth_dev_ops = { 618 .dev_configure = virtio_dev_configure, 619 .dev_start = virtio_dev_start, 620 .dev_stop = virtio_dev_stop, 621 .dev_close = virtio_dev_close, 622 .promiscuous_enable = virtio_dev_promiscuous_enable, 623 .promiscuous_disable = virtio_dev_promiscuous_disable, 624 .allmulticast_enable = virtio_dev_allmulticast_enable, 625 .allmulticast_disable = virtio_dev_allmulticast_disable, 626 .mtu_set = virtio_mtu_set, 627 .dev_infos_get = virtio_dev_info_get, 628 .stats_get = virtio_dev_stats_get, 629 .xstats_get = virtio_dev_xstats_get, 630 .xstats_get_names = virtio_dev_xstats_get_names, 631 .stats_reset = virtio_dev_stats_reset, 632 .xstats_reset = virtio_dev_stats_reset, 633 .link_update = virtio_dev_link_update, 634 .vlan_offload_set = virtio_dev_vlan_offload_set, 635 .rx_queue_setup = virtio_dev_rx_queue_setup, 636 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 637 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 638 .tx_queue_setup = virtio_dev_tx_queue_setup, 639 .rss_hash_update = virtio_dev_rss_hash_update, 640 .rss_hash_conf_get = virtio_dev_rss_hash_conf_get, 641 .reta_update = virtio_dev_rss_reta_update, 642 .reta_query = virtio_dev_rss_reta_query, 643 /* collect stats per queue */ 644 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 645 .vlan_filter_set = virtio_vlan_filter_set, 646 .mac_addr_add = virtio_mac_addr_add, 647 .mac_addr_remove = virtio_mac_addr_remove, 648 .mac_addr_set = virtio_mac_addr_set, 649 .get_monitor_addr = virtio_get_monitor_addr, 650 .eth_dev_priv_dump = virtio_dev_priv_dump, 651 }; 652 653 /* 654 * dev_ops for virtio-user in secondary processes, as we just have 655 * some limited supports currently. 656 */ 657 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 658 .dev_infos_get = virtio_dev_info_get, 659 .stats_get = virtio_dev_stats_get, 660 .xstats_get = virtio_dev_xstats_get, 661 .xstats_get_names = virtio_dev_xstats_get_names, 662 .stats_reset = virtio_dev_stats_reset, 663 .xstats_reset = virtio_dev_stats_reset, 664 /* collect stats per queue */ 665 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 666 }; 667 668 static void 669 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 670 { 671 unsigned i; 672 673 for (i = 0; i < dev->data->nb_tx_queues; i++) { 674 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 675 if (txvq == NULL) 676 continue; 677 678 stats->opackets += txvq->stats.packets; 679 stats->obytes += txvq->stats.bytes; 680 681 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 682 stats->q_opackets[i] = txvq->stats.packets; 683 stats->q_obytes[i] = txvq->stats.bytes; 684 } 685 } 686 687 for (i = 0; i < dev->data->nb_rx_queues; i++) { 688 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 689 if (rxvq == NULL) 690 continue; 691 692 stats->ipackets += rxvq->stats.packets; 693 stats->ibytes += rxvq->stats.bytes; 694 stats->ierrors += rxvq->stats.errors; 695 696 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 697 stats->q_ipackets[i] = rxvq->stats.packets; 698 stats->q_ibytes[i] = rxvq->stats.bytes; 699 } 700 } 701 702 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 703 } 704 705 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 706 struct rte_eth_xstat_name *xstats_names, 707 __rte_unused unsigned limit) 708 { 709 unsigned i; 710 unsigned count = 0; 711 unsigned t; 712 713 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 714 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 715 716 if (xstats_names != NULL) { 717 /* Note: limit checked in rte_eth_xstats_names() */ 718 719 for (i = 0; i < dev->data->nb_rx_queues; i++) { 720 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 721 if (rxvq == NULL) 722 continue; 723 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 724 snprintf(xstats_names[count].name, 725 sizeof(xstats_names[count].name), 726 "rx_q%u_%s", i, 727 rte_virtio_rxq_stat_strings[t].name); 728 count++; 729 } 730 } 731 732 for (i = 0; i < dev->data->nb_tx_queues; i++) { 733 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 734 if (txvq == NULL) 735 continue; 736 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 737 snprintf(xstats_names[count].name, 738 sizeof(xstats_names[count].name), 739 "tx_q%u_%s", i, 740 rte_virtio_txq_stat_strings[t].name); 741 count++; 742 } 743 } 744 return count; 745 } 746 return nstats; 747 } 748 749 static int 750 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 751 unsigned n) 752 { 753 unsigned i; 754 unsigned count = 0; 755 756 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 757 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 758 759 if (n < nstats) 760 return nstats; 761 762 for (i = 0; i < dev->data->nb_rx_queues; i++) { 763 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 764 765 if (rxvq == NULL) 766 continue; 767 768 unsigned t; 769 770 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 771 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 772 rte_virtio_rxq_stat_strings[t].offset); 773 xstats[count].id = count; 774 count++; 775 } 776 } 777 778 for (i = 0; i < dev->data->nb_tx_queues; i++) { 779 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 780 781 if (txvq == NULL) 782 continue; 783 784 unsigned t; 785 786 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 787 xstats[count].value = *(uint64_t *)(((char *)txvq) + 788 rte_virtio_txq_stat_strings[t].offset); 789 xstats[count].id = count; 790 count++; 791 } 792 } 793 794 return count; 795 } 796 797 static int 798 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 799 { 800 virtio_update_stats(dev, stats); 801 802 return 0; 803 } 804 805 static int 806 virtio_dev_stats_reset(struct rte_eth_dev *dev) 807 { 808 unsigned int i; 809 810 for (i = 0; i < dev->data->nb_tx_queues; i++) { 811 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 812 if (txvq == NULL) 813 continue; 814 815 txvq->stats.packets = 0; 816 txvq->stats.bytes = 0; 817 txvq->stats.multicast = 0; 818 txvq->stats.broadcast = 0; 819 memset(txvq->stats.size_bins, 0, 820 sizeof(txvq->stats.size_bins[0]) * 8); 821 } 822 823 for (i = 0; i < dev->data->nb_rx_queues; i++) { 824 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 825 if (rxvq == NULL) 826 continue; 827 828 rxvq->stats.packets = 0; 829 rxvq->stats.bytes = 0; 830 rxvq->stats.errors = 0; 831 rxvq->stats.multicast = 0; 832 rxvq->stats.broadcast = 0; 833 memset(rxvq->stats.size_bins, 0, 834 sizeof(rxvq->stats.size_bins[0]) * 8); 835 } 836 837 return 0; 838 } 839 840 static void 841 virtio_set_hwaddr(struct virtio_hw *hw) 842 { 843 virtio_write_dev_config(hw, 844 offsetof(struct virtio_net_config, mac), 845 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 846 } 847 848 static void 849 virtio_get_hwaddr(struct virtio_hw *hw) 850 { 851 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) { 852 virtio_read_dev_config(hw, 853 offsetof(struct virtio_net_config, mac), 854 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 855 } else { 856 rte_eth_random_addr(&hw->mac_addr[0]); 857 virtio_set_hwaddr(hw); 858 } 859 } 860 861 static int 862 virtio_mac_table_set(struct virtio_hw *hw, 863 const struct virtio_net_ctrl_mac *uc, 864 const struct virtio_net_ctrl_mac *mc) 865 { 866 struct virtio_pmd_ctrl ctrl; 867 int err, len[2]; 868 869 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 870 PMD_DRV_LOG(INFO, "host does not support mac table"); 871 return -1; 872 } 873 874 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 875 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 876 877 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 878 memcpy(ctrl.data, uc, len[0]); 879 880 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 881 memcpy(ctrl.data + len[0], mc, len[1]); 882 883 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 884 if (err != 0) 885 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 886 return err; 887 } 888 889 static int 890 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 891 uint32_t index, uint32_t vmdq __rte_unused) 892 { 893 struct virtio_hw *hw = dev->data->dev_private; 894 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 895 unsigned int i; 896 struct virtio_net_ctrl_mac *uc, *mc; 897 898 if (index >= VIRTIO_MAX_MAC_ADDRS) { 899 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 900 return -EINVAL; 901 } 902 903 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 904 sizeof(uc->entries)); 905 uc->entries = 0; 906 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 907 sizeof(mc->entries)); 908 mc->entries = 0; 909 910 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 911 const struct rte_ether_addr *addr 912 = (i == index) ? mac_addr : addrs + i; 913 struct virtio_net_ctrl_mac *tbl 914 = rte_is_multicast_ether_addr(addr) ? mc : uc; 915 916 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 917 } 918 919 return virtio_mac_table_set(hw, uc, mc); 920 } 921 922 static void 923 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 924 { 925 struct virtio_hw *hw = dev->data->dev_private; 926 struct rte_ether_addr *addrs = dev->data->mac_addrs; 927 struct virtio_net_ctrl_mac *uc, *mc; 928 unsigned int i; 929 930 if (index >= VIRTIO_MAX_MAC_ADDRS) { 931 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 932 return; 933 } 934 935 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 936 sizeof(uc->entries)); 937 uc->entries = 0; 938 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 939 sizeof(mc->entries)); 940 mc->entries = 0; 941 942 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 943 struct virtio_net_ctrl_mac *tbl; 944 945 if (i == index || rte_is_zero_ether_addr(addrs + i)) 946 continue; 947 948 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 949 memcpy(&tbl->macs[tbl->entries++], addrs + i, 950 RTE_ETHER_ADDR_LEN); 951 } 952 953 virtio_mac_table_set(hw, uc, mc); 954 } 955 956 static int 957 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 958 { 959 struct virtio_hw *hw = dev->data->dev_private; 960 961 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 962 963 /* Use atomic update if available */ 964 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 965 struct virtio_pmd_ctrl ctrl; 966 int len = RTE_ETHER_ADDR_LEN; 967 968 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 969 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 970 971 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 972 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 973 } 974 975 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC)) 976 return -ENOTSUP; 977 978 virtio_set_hwaddr(hw); 979 return 0; 980 } 981 982 #define CLB_VAL_IDX 0 983 #define CLB_MSK_IDX 1 984 #define CLB_MATCH_IDX 2 985 static int 986 virtio_monitor_callback(const uint64_t value, 987 const uint64_t opaque[RTE_POWER_MONITOR_OPAQUE_SZ]) 988 { 989 const uint64_t m = opaque[CLB_MSK_IDX]; 990 const uint64_t v = opaque[CLB_VAL_IDX]; 991 const uint64_t c = opaque[CLB_MATCH_IDX]; 992 993 if (c) 994 return (value & m) == v ? -1 : 0; 995 else 996 return (value & m) == v ? 0 : -1; 997 } 998 999 static int 1000 virtio_get_monitor_addr(void *rx_queue, struct rte_power_monitor_cond *pmc) 1001 { 1002 struct virtnet_rx *rxvq = rx_queue; 1003 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq); 1004 struct virtio_hw *hw; 1005 1006 if (vq == NULL) 1007 return -EINVAL; 1008 1009 hw = vq->hw; 1010 if (virtio_with_packed_queue(hw)) { 1011 struct vring_packed_desc *desc; 1012 desc = vq->vq_packed.ring.desc; 1013 pmc->addr = &desc[vq->vq_used_cons_idx].flags; 1014 if (vq->vq_packed.used_wrap_counter) 1015 pmc->opaque[CLB_VAL_IDX] = 1016 VRING_PACKED_DESC_F_AVAIL_USED; 1017 else 1018 pmc->opaque[CLB_VAL_IDX] = 0; 1019 pmc->opaque[CLB_MSK_IDX] = VRING_PACKED_DESC_F_AVAIL_USED; 1020 pmc->opaque[CLB_MATCH_IDX] = 1; 1021 pmc->size = sizeof(desc[vq->vq_used_cons_idx].flags); 1022 } else { 1023 pmc->addr = &vq->vq_split.ring.used->idx; 1024 pmc->opaque[CLB_VAL_IDX] = vq->vq_used_cons_idx 1025 & (vq->vq_nentries - 1); 1026 pmc->opaque[CLB_MSK_IDX] = vq->vq_nentries - 1; 1027 pmc->opaque[CLB_MATCH_IDX] = 0; 1028 pmc->size = sizeof(vq->vq_split.ring.used->idx); 1029 } 1030 pmc->fn = virtio_monitor_callback; 1031 1032 return 0; 1033 } 1034 1035 static int 1036 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1037 { 1038 struct virtio_hw *hw = dev->data->dev_private; 1039 struct virtio_pmd_ctrl ctrl; 1040 int len; 1041 1042 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1043 return -ENOTSUP; 1044 1045 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1046 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1047 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1048 len = sizeof(vlan_id); 1049 1050 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1051 } 1052 1053 static int 1054 virtio_intr_unmask(struct rte_eth_dev *dev) 1055 { 1056 struct virtio_hw *hw = dev->data->dev_private; 1057 1058 if (rte_intr_ack(dev->intr_handle) < 0) 1059 return -1; 1060 1061 if (VIRTIO_OPS(hw)->intr_detect) 1062 VIRTIO_OPS(hw)->intr_detect(hw); 1063 1064 return 0; 1065 } 1066 1067 static int 1068 virtio_intr_enable(struct rte_eth_dev *dev) 1069 { 1070 struct virtio_hw *hw = dev->data->dev_private; 1071 1072 if (rte_intr_enable(dev->intr_handle) < 0) 1073 return -1; 1074 1075 if (VIRTIO_OPS(hw)->intr_detect) 1076 VIRTIO_OPS(hw)->intr_detect(hw); 1077 1078 return 0; 1079 } 1080 1081 static int 1082 virtio_intr_disable(struct rte_eth_dev *dev) 1083 { 1084 struct virtio_hw *hw = dev->data->dev_private; 1085 1086 if (rte_intr_disable(dev->intr_handle) < 0) 1087 return -1; 1088 1089 if (VIRTIO_OPS(hw)->intr_detect) 1090 VIRTIO_OPS(hw)->intr_detect(hw); 1091 1092 return 0; 1093 } 1094 1095 static int 1096 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1097 { 1098 uint64_t host_features; 1099 1100 /* Prepare guest_features: feature that driver wants to support */ 1101 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1102 req_features); 1103 1104 /* Read device(host) feature bits */ 1105 host_features = VIRTIO_OPS(hw)->get_features(hw); 1106 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1107 host_features); 1108 1109 /* If supported, ensure MTU value is valid before acknowledging it. */ 1110 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1111 struct virtio_net_config config; 1112 1113 virtio_read_dev_config(hw, 1114 offsetof(struct virtio_net_config, mtu), 1115 &config.mtu, sizeof(config.mtu)); 1116 1117 if (config.mtu < RTE_ETHER_MIN_MTU) 1118 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1119 } 1120 1121 /* 1122 * Negotiate features: Subset of device feature bits are written back 1123 * guest feature bits. 1124 */ 1125 hw->guest_features = req_features; 1126 hw->guest_features = virtio_negotiate_features(hw, host_features); 1127 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1128 hw->guest_features); 1129 1130 if (VIRTIO_OPS(hw)->features_ok(hw) < 0) 1131 return -1; 1132 1133 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) { 1134 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1135 1136 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1137 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!"); 1138 return -1; 1139 } 1140 } 1141 1142 hw->req_guest_features = req_features; 1143 1144 return 0; 1145 } 1146 1147 static void 1148 virtio_notify_peers(struct rte_eth_dev *dev) 1149 { 1150 struct virtio_hw *hw = dev->data->dev_private; 1151 struct virtnet_rx *rxvq; 1152 struct rte_mbuf *rarp_mbuf; 1153 1154 if (!dev->data->rx_queues) 1155 return; 1156 1157 rxvq = dev->data->rx_queues[0]; 1158 if (!rxvq) 1159 return; 1160 1161 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1162 (struct rte_ether_addr *)hw->mac_addr); 1163 if (rarp_mbuf == NULL) { 1164 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1165 return; 1166 } 1167 1168 rte_spinlock_lock(&hw->state_lock); 1169 if (hw->started == 0) { 1170 /* If virtio port just stopped, no need to send RARP */ 1171 rte_pktmbuf_free(rarp_mbuf); 1172 goto out; 1173 } 1174 hw->started = 0; 1175 1176 /* 1177 * Prevent the worker threads from touching queues to avoid contention, 1178 * 1 ms should be enough for the ongoing Tx function to finish. 1179 */ 1180 rte_delay_ms(1); 1181 1182 hw->inject_pkts = &rarp_mbuf; 1183 dev->tx_pkt_burst(dev->data->tx_queues[0], &rarp_mbuf, 1); 1184 hw->inject_pkts = NULL; 1185 1186 hw->started = 1; 1187 1188 out: 1189 rte_spinlock_unlock(&hw->state_lock); 1190 } 1191 1192 static void 1193 virtio_ack_link_announce(struct rte_eth_dev *dev) 1194 { 1195 struct virtio_hw *hw = dev->data->dev_private; 1196 struct virtio_pmd_ctrl ctrl; 1197 1198 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1199 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1200 1201 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1202 } 1203 1204 /* 1205 * Process virtio config changed interrupt. Call the callback 1206 * if link state changed, generate gratuitous RARP packet if 1207 * the status indicates an ANNOUNCE. 1208 */ 1209 void 1210 virtio_interrupt_handler(void *param) 1211 { 1212 struct rte_eth_dev *dev = param; 1213 struct virtio_hw *hw = dev->data->dev_private; 1214 uint8_t isr; 1215 uint16_t status; 1216 1217 /* Read interrupt status which clears interrupt */ 1218 isr = virtio_get_isr(hw); 1219 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1220 1221 if (virtio_intr_unmask(dev) < 0) 1222 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1223 1224 if (isr & VIRTIO_ISR_CONFIG) { 1225 if (virtio_dev_link_update(dev, 0) == 0) 1226 rte_eth_dev_callback_process(dev, 1227 RTE_ETH_EVENT_INTR_LSC, 1228 NULL); 1229 1230 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1231 virtio_read_dev_config(hw, 1232 offsetof(struct virtio_net_config, status), 1233 &status, sizeof(status)); 1234 if (status & VIRTIO_NET_S_ANNOUNCE) { 1235 virtio_notify_peers(dev); 1236 if (hw->cvq) 1237 virtio_ack_link_announce(dev); 1238 } 1239 } 1240 } 1241 } 1242 1243 /* set rx and tx handlers according to what is supported */ 1244 static void 1245 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1246 { 1247 struct virtio_hw *hw = eth_dev->data->dev_private; 1248 1249 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1250 if (virtio_with_packed_queue(hw)) { 1251 PMD_INIT_LOG(INFO, 1252 "virtio: using packed ring %s Tx path on port %u", 1253 hw->use_vec_tx ? "vectorized" : "standard", 1254 eth_dev->data->port_id); 1255 if (hw->use_vec_tx) 1256 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1257 else 1258 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1259 } else { 1260 if (hw->use_inorder_tx) { 1261 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1262 eth_dev->data->port_id); 1263 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1264 } else { 1265 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1266 eth_dev->data->port_id); 1267 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1268 } 1269 } 1270 1271 if (virtio_with_packed_queue(hw)) { 1272 if (hw->use_vec_rx) { 1273 PMD_INIT_LOG(INFO, 1274 "virtio: using packed ring vectorized Rx path on port %u", 1275 eth_dev->data->port_id); 1276 eth_dev->rx_pkt_burst = 1277 &virtio_recv_pkts_packed_vec; 1278 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1279 PMD_INIT_LOG(INFO, 1280 "virtio: using packed ring mergeable buffer Rx path on port %u", 1281 eth_dev->data->port_id); 1282 eth_dev->rx_pkt_burst = 1283 &virtio_recv_mergeable_pkts_packed; 1284 } else { 1285 PMD_INIT_LOG(INFO, 1286 "virtio: using packed ring standard Rx path on port %u", 1287 eth_dev->data->port_id); 1288 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1289 } 1290 } else { 1291 if (hw->use_vec_rx) { 1292 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1293 eth_dev->data->port_id); 1294 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1295 } else if (hw->use_inorder_rx) { 1296 PMD_INIT_LOG(INFO, 1297 "virtio: using inorder Rx path on port %u", 1298 eth_dev->data->port_id); 1299 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1300 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1301 PMD_INIT_LOG(INFO, 1302 "virtio: using mergeable buffer Rx path on port %u", 1303 eth_dev->data->port_id); 1304 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1305 } else { 1306 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1307 eth_dev->data->port_id); 1308 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1309 } 1310 } 1311 1312 } 1313 1314 /* Only support 1:1 queue/interrupt mapping so far. 1315 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1316 * interrupt vectors (<N+1). 1317 */ 1318 static int 1319 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1320 { 1321 uint32_t i; 1322 struct virtio_hw *hw = dev->data->dev_private; 1323 1324 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1325 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1326 if (rte_intr_vec_list_index_set(dev->intr_handle, i, 1327 i + 1)) 1328 return -rte_errno; 1329 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1330 VIRTIO_MSI_NO_VECTOR) { 1331 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1332 return -EBUSY; 1333 } 1334 } 1335 1336 return 0; 1337 } 1338 1339 static void 1340 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1341 { 1342 uint32_t i; 1343 struct virtio_hw *hw = dev->data->dev_private; 1344 1345 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1346 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1347 VIRTIO_OPS(hw)->set_queue_irq(hw, 1348 hw->vqs[i * VTNET_CQ], 1349 VIRTIO_MSI_NO_VECTOR); 1350 } 1351 1352 static int 1353 virtio_configure_intr(struct rte_eth_dev *dev) 1354 { 1355 struct virtio_hw *hw = dev->data->dev_private; 1356 1357 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1358 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1359 return -ENOTSUP; 1360 } 1361 1362 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1363 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1364 return -1; 1365 } 1366 1367 if (rte_intr_vec_list_alloc(dev->intr_handle, "intr_vec", 1368 hw->max_queue_pairs)) { 1369 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1370 hw->max_queue_pairs); 1371 return -ENOMEM; 1372 } 1373 1374 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 1375 /* Re-register callback to update max_intr */ 1376 rte_intr_callback_unregister(dev->intr_handle, 1377 virtio_interrupt_handler, 1378 dev); 1379 rte_intr_callback_register(dev->intr_handle, 1380 virtio_interrupt_handler, 1381 dev); 1382 } 1383 1384 /* DO NOT try to remove this! This function will enable msix, or QEMU 1385 * will encounter SIGSEGV when DRIVER_OK is sent. 1386 * And for legacy devices, this should be done before queue/vec binding 1387 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1388 * (22) will be ignored. 1389 */ 1390 if (virtio_intr_enable(dev) < 0) { 1391 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1392 return -1; 1393 } 1394 1395 if (virtio_queues_bind_intr(dev) < 0) { 1396 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1397 return -1; 1398 } 1399 1400 return 0; 1401 } 1402 1403 static void 1404 virtio_get_speed_duplex(struct rte_eth_dev *eth_dev, 1405 struct rte_eth_link *link) 1406 { 1407 struct virtio_hw *hw = eth_dev->data->dev_private; 1408 struct virtio_net_config *config; 1409 struct virtio_net_config local_config; 1410 1411 config = &local_config; 1412 virtio_read_dev_config(hw, 1413 offsetof(struct virtio_net_config, speed), 1414 &config->speed, sizeof(config->speed)); 1415 virtio_read_dev_config(hw, 1416 offsetof(struct virtio_net_config, duplex), 1417 &config->duplex, sizeof(config->duplex)); 1418 hw->speed = config->speed; 1419 hw->duplex = config->duplex; 1420 if (link != NULL) { 1421 link->link_duplex = hw->duplex; 1422 link->link_speed = hw->speed; 1423 } 1424 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1425 hw->speed, hw->duplex); 1426 } 1427 1428 static uint64_t 1429 ethdev_to_virtio_rss_offloads(uint64_t ethdev_hash_types) 1430 { 1431 uint64_t virtio_hash_types = 0; 1432 1433 if (ethdev_hash_types & (RTE_ETH_RSS_IPV4 | RTE_ETH_RSS_FRAG_IPV4 | 1434 RTE_ETH_RSS_NONFRAG_IPV4_OTHER)) 1435 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_IPV4; 1436 1437 if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV4_TCP) 1438 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_TCPV4; 1439 1440 if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV4_UDP) 1441 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_UDPV4; 1442 1443 if (ethdev_hash_types & (RTE_ETH_RSS_IPV6 | RTE_ETH_RSS_FRAG_IPV6 | 1444 RTE_ETH_RSS_NONFRAG_IPV6_OTHER)) 1445 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_IPV6; 1446 1447 if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV6_TCP) 1448 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_TCPV6; 1449 1450 if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV6_UDP) 1451 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_UDPV6; 1452 1453 if (ethdev_hash_types & RTE_ETH_RSS_IPV6_EX) 1454 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_IP_EX; 1455 1456 if (ethdev_hash_types & RTE_ETH_RSS_IPV6_TCP_EX) 1457 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_TCP_EX; 1458 1459 if (ethdev_hash_types & RTE_ETH_RSS_IPV6_UDP_EX) 1460 virtio_hash_types |= VIRTIO_NET_HASH_TYPE_UDP_EX; 1461 1462 return virtio_hash_types; 1463 } 1464 1465 static uint64_t 1466 virtio_to_ethdev_rss_offloads(uint64_t virtio_hash_types) 1467 { 1468 uint64_t rss_offloads = 0; 1469 1470 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_IPV4) 1471 rss_offloads |= RTE_ETH_RSS_IPV4 | RTE_ETH_RSS_FRAG_IPV4 | 1472 RTE_ETH_RSS_NONFRAG_IPV4_OTHER; 1473 1474 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_TCPV4) 1475 rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV4_TCP; 1476 1477 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_UDPV4) 1478 rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV4_UDP; 1479 1480 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_IPV6) 1481 rss_offloads |= RTE_ETH_RSS_IPV6 | RTE_ETH_RSS_FRAG_IPV6 | 1482 RTE_ETH_RSS_NONFRAG_IPV6_OTHER; 1483 1484 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_TCPV6) 1485 rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV6_TCP; 1486 1487 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_UDPV6) 1488 rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV6_UDP; 1489 1490 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_IP_EX) 1491 rss_offloads |= RTE_ETH_RSS_IPV6_EX; 1492 1493 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_TCP_EX) 1494 rss_offloads |= RTE_ETH_RSS_IPV6_TCP_EX; 1495 1496 if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_UDP_EX) 1497 rss_offloads |= RTE_ETH_RSS_IPV6_UDP_EX; 1498 1499 return rss_offloads; 1500 } 1501 1502 static int 1503 virtio_dev_get_rss_config(struct virtio_hw *hw, uint32_t *rss_hash_types) 1504 { 1505 struct virtio_net_config local_config; 1506 struct virtio_net_config *config = &local_config; 1507 1508 virtio_read_dev_config(hw, 1509 offsetof(struct virtio_net_config, rss_max_key_size), 1510 &config->rss_max_key_size, 1511 sizeof(config->rss_max_key_size)); 1512 if (config->rss_max_key_size < VIRTIO_NET_RSS_KEY_SIZE) { 1513 PMD_INIT_LOG(ERR, "Invalid device RSS max key size (%u)", 1514 config->rss_max_key_size); 1515 return -EINVAL; 1516 } 1517 1518 virtio_read_dev_config(hw, 1519 offsetof(struct virtio_net_config, 1520 rss_max_indirection_table_length), 1521 &config->rss_max_indirection_table_length, 1522 sizeof(config->rss_max_indirection_table_length)); 1523 if (config->rss_max_indirection_table_length < VIRTIO_NET_RSS_RETA_SIZE) { 1524 PMD_INIT_LOG(ERR, "Invalid device RSS max reta size (%u)", 1525 config->rss_max_indirection_table_length); 1526 return -EINVAL; 1527 } 1528 1529 virtio_read_dev_config(hw, 1530 offsetof(struct virtio_net_config, supported_hash_types), 1531 &config->supported_hash_types, 1532 sizeof(config->supported_hash_types)); 1533 if ((config->supported_hash_types & VIRTIO_NET_HASH_TYPE_MASK) == 0) { 1534 PMD_INIT_LOG(ERR, "Invalid device RSS hash types (0x%x)", 1535 config->supported_hash_types); 1536 return -EINVAL; 1537 } 1538 1539 *rss_hash_types = config->supported_hash_types & VIRTIO_NET_HASH_TYPE_MASK; 1540 1541 PMD_INIT_LOG(DEBUG, "Device RSS config:"); 1542 PMD_INIT_LOG(DEBUG, "\t-Max key size: %u", config->rss_max_key_size); 1543 PMD_INIT_LOG(DEBUG, "\t-Max reta size: %u", config->rss_max_indirection_table_length); 1544 PMD_INIT_LOG(DEBUG, "\t-Supported hash types: 0x%x", *rss_hash_types); 1545 1546 return 0; 1547 } 1548 1549 static int 1550 virtio_dev_rss_hash_update(struct rte_eth_dev *dev, 1551 struct rte_eth_rss_conf *rss_conf) 1552 { 1553 struct virtio_hw *hw = dev->data->dev_private; 1554 char old_rss_key[VIRTIO_NET_RSS_KEY_SIZE]; 1555 uint32_t old_hash_types; 1556 uint16_t nb_queues; 1557 int ret; 1558 1559 if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS)) 1560 return -ENOTSUP; 1561 1562 if (rss_conf->rss_hf & ~virtio_to_ethdev_rss_offloads(VIRTIO_NET_HASH_TYPE_MASK)) 1563 return -EINVAL; 1564 1565 old_hash_types = hw->rss_hash_types; 1566 hw->rss_hash_types = ethdev_to_virtio_rss_offloads(rss_conf->rss_hf); 1567 1568 if (rss_conf->rss_key && rss_conf->rss_key_len) { 1569 if (rss_conf->rss_key_len != VIRTIO_NET_RSS_KEY_SIZE) { 1570 PMD_INIT_LOG(ERR, "Driver only supports %u RSS key length", 1571 VIRTIO_NET_RSS_KEY_SIZE); 1572 ret = -EINVAL; 1573 goto restore_types; 1574 } 1575 memcpy(old_rss_key, hw->rss_key, VIRTIO_NET_RSS_KEY_SIZE); 1576 memcpy(hw->rss_key, rss_conf->rss_key, VIRTIO_NET_RSS_KEY_SIZE); 1577 } 1578 1579 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 1580 ret = virtio_set_multiple_queues_rss(dev, nb_queues); 1581 if (ret < 0) { 1582 PMD_INIT_LOG(ERR, "Failed to apply new RSS config to the device"); 1583 goto restore_key; 1584 } 1585 1586 return 0; 1587 restore_key: 1588 if (rss_conf->rss_key && rss_conf->rss_key_len) 1589 memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE); 1590 restore_types: 1591 hw->rss_hash_types = old_hash_types; 1592 1593 return ret; 1594 } 1595 1596 static int 1597 virtio_dev_rss_hash_conf_get(struct rte_eth_dev *dev, 1598 struct rte_eth_rss_conf *rss_conf) 1599 { 1600 struct virtio_hw *hw = dev->data->dev_private; 1601 1602 if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS)) 1603 return -ENOTSUP; 1604 1605 if (rss_conf->rss_key && rss_conf->rss_key_len >= VIRTIO_NET_RSS_KEY_SIZE) 1606 memcpy(rss_conf->rss_key, hw->rss_key, VIRTIO_NET_RSS_KEY_SIZE); 1607 rss_conf->rss_key_len = VIRTIO_NET_RSS_KEY_SIZE; 1608 rss_conf->rss_hf = virtio_to_ethdev_rss_offloads(hw->rss_hash_types); 1609 1610 return 0; 1611 } 1612 1613 static int virtio_dev_rss_reta_update(struct rte_eth_dev *dev, 1614 struct rte_eth_rss_reta_entry64 *reta_conf, 1615 uint16_t reta_size) 1616 { 1617 struct virtio_hw *hw = dev->data->dev_private; 1618 uint16_t nb_queues; 1619 uint16_t old_reta[VIRTIO_NET_RSS_RETA_SIZE]; 1620 int idx, pos, i, ret; 1621 1622 if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS)) 1623 return -ENOTSUP; 1624 1625 if (reta_size != VIRTIO_NET_RSS_RETA_SIZE) 1626 return -EINVAL; 1627 1628 memcpy(old_reta, hw->rss_reta, sizeof(old_reta)); 1629 1630 for (i = 0; i < reta_size; i++) { 1631 idx = i / RTE_ETH_RETA_GROUP_SIZE; 1632 pos = i % RTE_ETH_RETA_GROUP_SIZE; 1633 1634 if (((reta_conf[idx].mask >> pos) & 0x1) == 0) 1635 continue; 1636 1637 hw->rss_reta[i] = reta_conf[idx].reta[pos]; 1638 } 1639 1640 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 1641 ret = virtio_set_multiple_queues_rss(dev, nb_queues); 1642 if (ret < 0) { 1643 PMD_INIT_LOG(ERR, "Failed to apply new RETA to the device"); 1644 memcpy(hw->rss_reta, old_reta, sizeof(old_reta)); 1645 } 1646 1647 hw->rss_rx_queues = dev->data->nb_rx_queues; 1648 1649 return ret; 1650 } 1651 1652 static int virtio_dev_rss_reta_query(struct rte_eth_dev *dev, 1653 struct rte_eth_rss_reta_entry64 *reta_conf, 1654 uint16_t reta_size) 1655 { 1656 struct virtio_hw *hw = dev->data->dev_private; 1657 int idx, i; 1658 1659 if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS)) 1660 return -ENOTSUP; 1661 1662 if (reta_size != VIRTIO_NET_RSS_RETA_SIZE) 1663 return -EINVAL; 1664 1665 for (i = 0; i < reta_size; i++) { 1666 idx = i / RTE_ETH_RETA_GROUP_SIZE; 1667 reta_conf[idx].reta[i % RTE_ETH_RETA_GROUP_SIZE] = hw->rss_reta[i]; 1668 } 1669 1670 return 0; 1671 } 1672 1673 /* 1674 * As default RSS hash key, it uses the default key of the 1675 * Intel IXGBE devices. It can be updated by the application 1676 * with any 40B key value. 1677 */ 1678 static uint8_t rss_intel_key[VIRTIO_NET_RSS_KEY_SIZE] = { 1679 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2, 1680 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0, 1681 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4, 1682 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C, 1683 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA, 1684 }; 1685 1686 static int 1687 virtio_dev_rss_init(struct rte_eth_dev *eth_dev) 1688 { 1689 struct virtio_hw *hw = eth_dev->data->dev_private; 1690 uint16_t nb_rx_queues = eth_dev->data->nb_rx_queues; 1691 struct rte_eth_rss_conf *rss_conf; 1692 int ret, i; 1693 1694 if (!nb_rx_queues) { 1695 PMD_INIT_LOG(ERR, "Cannot init RSS if no Rx queues"); 1696 return -EINVAL; 1697 } 1698 1699 rss_conf = ð_dev->data->dev_conf.rx_adv_conf.rss_conf; 1700 1701 ret = virtio_dev_get_rss_config(hw, &hw->rss_hash_types); 1702 if (ret) 1703 return ret; 1704 1705 if (rss_conf->rss_hf) { 1706 /* Ensure requested hash types are supported by the device */ 1707 if (rss_conf->rss_hf & ~virtio_to_ethdev_rss_offloads(hw->rss_hash_types)) 1708 return -EINVAL; 1709 1710 hw->rss_hash_types = ethdev_to_virtio_rss_offloads(rss_conf->rss_hf); 1711 } 1712 1713 if (!hw->rss_key) { 1714 /* Setup default RSS key if not already setup by the user */ 1715 hw->rss_key = rte_malloc_socket("rss_key", 1716 VIRTIO_NET_RSS_KEY_SIZE, 0, 1717 eth_dev->device->numa_node); 1718 if (!hw->rss_key) { 1719 PMD_INIT_LOG(ERR, "Failed to allocate RSS key"); 1720 return -1; 1721 } 1722 } 1723 1724 if (rss_conf->rss_key && rss_conf->rss_key_len) { 1725 if (rss_conf->rss_key_len != VIRTIO_NET_RSS_KEY_SIZE) { 1726 PMD_INIT_LOG(ERR, "Driver only supports %u RSS key length", 1727 VIRTIO_NET_RSS_KEY_SIZE); 1728 return -EINVAL; 1729 } 1730 memcpy(hw->rss_key, rss_conf->rss_key, VIRTIO_NET_RSS_KEY_SIZE); 1731 } else { 1732 memcpy(hw->rss_key, rss_intel_key, VIRTIO_NET_RSS_KEY_SIZE); 1733 } 1734 1735 if (!hw->rss_reta) { 1736 /* Setup default RSS reta if not already setup by the user */ 1737 hw->rss_reta = rte_zmalloc_socket("rss_reta", 1738 VIRTIO_NET_RSS_RETA_SIZE * sizeof(uint16_t), 0, 1739 eth_dev->device->numa_node); 1740 if (!hw->rss_reta) { 1741 PMD_INIT_LOG(ERR, "Failed to allocate RSS reta"); 1742 return -1; 1743 } 1744 1745 hw->rss_rx_queues = 0; 1746 } 1747 1748 /* Re-initialize the RSS reta if the number of RX queues has changed */ 1749 if (hw->rss_rx_queues != nb_rx_queues) { 1750 for (i = 0; i < VIRTIO_NET_RSS_RETA_SIZE; i++) 1751 hw->rss_reta[i] = i % nb_rx_queues; 1752 hw->rss_rx_queues = nb_rx_queues; 1753 } 1754 1755 return 0; 1756 } 1757 1758 #define DUPLEX_UNKNOWN 0xff 1759 /* reset device and renegotiate features if needed */ 1760 static int 1761 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1762 { 1763 struct virtio_hw *hw = eth_dev->data->dev_private; 1764 struct virtio_net_config *config; 1765 struct virtio_net_config local_config; 1766 int ret; 1767 1768 /* Reset the device although not necessary at startup */ 1769 virtio_reset(hw); 1770 1771 if (hw->vqs) { 1772 virtio_dev_free_mbufs(eth_dev); 1773 virtio_free_queues(hw); 1774 } 1775 1776 /* Tell the host we've noticed this device. */ 1777 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1778 1779 /* Tell the host we've known how to drive the device. */ 1780 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1781 if (virtio_ethdev_negotiate_features(hw, req_features) < 0) 1782 return -1; 1783 1784 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1785 1786 /* If host does not support both status and MSI-X then disable LSC */ 1787 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc) 1788 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1789 else 1790 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1791 1792 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1793 1794 /* Setting up rx_header size for the device */ 1795 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1796 virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 1797 virtio_with_packed_queue(hw)) 1798 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1799 else 1800 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1801 1802 /* Copy the permanent MAC address to: virtio_hw */ 1803 virtio_get_hwaddr(hw); 1804 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1805 ð_dev->data->mac_addrs[0]); 1806 PMD_INIT_LOG(DEBUG, 1807 "PORT MAC: " RTE_ETHER_ADDR_PRT_FMT, 1808 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1809 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1810 1811 hw->get_speed_via_feat = hw->speed == RTE_ETH_SPEED_NUM_UNKNOWN && 1812 virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX); 1813 if (hw->get_speed_via_feat) 1814 virtio_get_speed_duplex(eth_dev, NULL); 1815 if (hw->duplex == DUPLEX_UNKNOWN) 1816 hw->duplex = RTE_ETH_LINK_FULL_DUPLEX; 1817 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1818 hw->speed, hw->duplex); 1819 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1820 config = &local_config; 1821 1822 virtio_read_dev_config(hw, 1823 offsetof(struct virtio_net_config, mac), 1824 &config->mac, sizeof(config->mac)); 1825 1826 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1827 virtio_read_dev_config(hw, 1828 offsetof(struct virtio_net_config, status), 1829 &config->status, sizeof(config->status)); 1830 } else { 1831 PMD_INIT_LOG(DEBUG, 1832 "VIRTIO_NET_F_STATUS is not supported"); 1833 config->status = 0; 1834 } 1835 1836 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ) || 1837 virtio_with_feature(hw, VIRTIO_NET_F_RSS)) { 1838 virtio_read_dev_config(hw, 1839 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1840 &config->max_virtqueue_pairs, 1841 sizeof(config->max_virtqueue_pairs)); 1842 } else { 1843 PMD_INIT_LOG(DEBUG, 1844 "Neither VIRTIO_NET_F_MQ nor VIRTIO_NET_F_RSS are supported"); 1845 config->max_virtqueue_pairs = 1; 1846 } 1847 1848 hw->max_queue_pairs = config->max_virtqueue_pairs; 1849 1850 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) { 1851 virtio_read_dev_config(hw, 1852 offsetof(struct virtio_net_config, mtu), 1853 &config->mtu, 1854 sizeof(config->mtu)); 1855 1856 /* 1857 * MTU value has already been checked at negotiation 1858 * time, but check again in case it has changed since 1859 * then, which should not happen. 1860 */ 1861 if (config->mtu < RTE_ETHER_MIN_MTU) { 1862 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1863 config->mtu); 1864 return -1; 1865 } 1866 1867 hw->max_mtu = config->mtu; 1868 /* Set initial MTU to maximum one supported by vhost */ 1869 eth_dev->data->mtu = config->mtu; 1870 1871 } else { 1872 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1873 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1874 } 1875 1876 hw->rss_hash_types = 0; 1877 if (virtio_with_feature(hw, VIRTIO_NET_F_RSS)) 1878 if (virtio_dev_rss_init(eth_dev)) 1879 return -1; 1880 1881 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1882 config->max_virtqueue_pairs); 1883 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1884 PMD_INIT_LOG(DEBUG, 1885 "PORT MAC: " RTE_ETHER_ADDR_PRT_FMT, 1886 config->mac[0], config->mac[1], 1887 config->mac[2], config->mac[3], 1888 config->mac[4], config->mac[5]); 1889 } else { 1890 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1891 hw->max_queue_pairs = 1; 1892 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1893 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1894 } 1895 1896 ret = virtio_alloc_queues(eth_dev); 1897 if (ret < 0) 1898 return ret; 1899 1900 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1901 if (virtio_configure_intr(eth_dev) < 0) { 1902 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1903 virtio_free_queues(hw); 1904 return -1; 1905 } 1906 } 1907 1908 virtio_reinit_complete(hw); 1909 1910 return 0; 1911 } 1912 1913 /* 1914 * This function is based on probe() function in virtio_pci.c 1915 * It returns 0 on success. 1916 */ 1917 int 1918 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1919 { 1920 struct virtio_hw *hw = eth_dev->data->dev_private; 1921 uint32_t speed = RTE_ETH_SPEED_NUM_UNKNOWN; 1922 int vectorized = 0; 1923 int ret; 1924 1925 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1926 PMD_INIT_LOG(ERR, 1927 "Not sufficient headroom required = %d, avail = %d", 1928 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1929 RTE_PKTMBUF_HEADROOM); 1930 1931 return -1; 1932 } 1933 1934 eth_dev->dev_ops = &virtio_eth_dev_ops; 1935 1936 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1937 set_rxtx_funcs(eth_dev); 1938 return 0; 1939 } 1940 1941 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized); 1942 if (ret < 0) 1943 return ret; 1944 hw->speed = speed; 1945 hw->duplex = DUPLEX_UNKNOWN; 1946 1947 /* Allocate memory for storing MAC addresses */ 1948 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1949 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1950 if (eth_dev->data->mac_addrs == NULL) { 1951 PMD_INIT_LOG(ERR, 1952 "Failed to allocate %d bytes needed to store MAC addresses", 1953 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1954 return -ENOMEM; 1955 } 1956 1957 rte_spinlock_init(&hw->state_lock); 1958 1959 if (vectorized) { 1960 hw->use_vec_rx = 1; 1961 hw->use_vec_tx = 1; 1962 } 1963 1964 /* reset device and negotiate default features */ 1965 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1966 if (ret < 0) 1967 goto err_virtio_init; 1968 1969 if (vectorized) { 1970 if (!virtio_with_packed_queue(hw)) { 1971 hw->use_vec_tx = 0; 1972 } else { 1973 #if !defined(CC_AVX512_SUPPORT) && !defined(RTE_ARCH_ARM) 1974 hw->use_vec_rx = 0; 1975 hw->use_vec_tx = 0; 1976 PMD_DRV_LOG(INFO, 1977 "building environment do not support packed ring vectorized"); 1978 #endif 1979 } 1980 } 1981 1982 hw->opened = 1; 1983 1984 return 0; 1985 1986 err_virtio_init: 1987 rte_free(eth_dev->data->mac_addrs); 1988 eth_dev->data->mac_addrs = NULL; 1989 return ret; 1990 } 1991 1992 static uint32_t 1993 virtio_dev_speed_capa_get(uint32_t speed) 1994 { 1995 switch (speed) { 1996 case RTE_ETH_SPEED_NUM_10G: 1997 return RTE_ETH_LINK_SPEED_10G; 1998 case RTE_ETH_SPEED_NUM_20G: 1999 return RTE_ETH_LINK_SPEED_20G; 2000 case RTE_ETH_SPEED_NUM_25G: 2001 return RTE_ETH_LINK_SPEED_25G; 2002 case RTE_ETH_SPEED_NUM_40G: 2003 return RTE_ETH_LINK_SPEED_40G; 2004 case RTE_ETH_SPEED_NUM_50G: 2005 return RTE_ETH_LINK_SPEED_50G; 2006 case RTE_ETH_SPEED_NUM_56G: 2007 return RTE_ETH_LINK_SPEED_56G; 2008 case RTE_ETH_SPEED_NUM_100G: 2009 return RTE_ETH_LINK_SPEED_100G; 2010 case RTE_ETH_SPEED_NUM_200G: 2011 return RTE_ETH_LINK_SPEED_200G; 2012 case RTE_ETH_SPEED_NUM_400G: 2013 return RTE_ETH_LINK_SPEED_400G; 2014 default: 2015 return 0; 2016 } 2017 } 2018 2019 static int vectorized_check_handler(__rte_unused const char *key, 2020 const char *value, void *ret_val) 2021 { 2022 if (value == NULL || ret_val == NULL) 2023 return -EINVAL; 2024 2025 if (strcmp(value, "1") == 0) 2026 *(int *)ret_val = 1; 2027 else 2028 *(int *)ret_val = 0; 2029 2030 return 0; 2031 } 2032 2033 #define VIRTIO_ARG_SPEED "speed" 2034 #define VIRTIO_ARG_VECTORIZED "vectorized" 2035 2036 static int 2037 link_speed_handler(const char *key __rte_unused, 2038 const char *value, void *ret_val) 2039 { 2040 uint32_t val; 2041 if (!value || !ret_val) 2042 return -EINVAL; 2043 val = strtoul(value, NULL, 0); 2044 /* validate input */ 2045 if (virtio_dev_speed_capa_get(val) == 0) 2046 return -EINVAL; 2047 *(uint32_t *)ret_val = val; 2048 2049 return 0; 2050 } 2051 2052 2053 static int 2054 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized) 2055 { 2056 struct rte_kvargs *kvlist; 2057 int ret = 0; 2058 2059 if (devargs == NULL) 2060 return 0; 2061 2062 kvlist = rte_kvargs_parse(devargs->args, NULL); 2063 if (kvlist == NULL) { 2064 PMD_INIT_LOG(ERR, "error when parsing param"); 2065 return 0; 2066 } 2067 2068 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2069 ret = rte_kvargs_process(kvlist, 2070 VIRTIO_ARG_SPEED, 2071 link_speed_handler, speed); 2072 if (ret < 0) { 2073 PMD_INIT_LOG(ERR, "Failed to parse %s", 2074 VIRTIO_ARG_SPEED); 2075 goto exit; 2076 } 2077 } 2078 2079 if (vectorized && 2080 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2081 ret = rte_kvargs_process(kvlist, 2082 VIRTIO_ARG_VECTORIZED, 2083 vectorized_check_handler, vectorized); 2084 if (ret < 0) { 2085 PMD_INIT_LOG(ERR, "Failed to parse %s", 2086 VIRTIO_ARG_VECTORIZED); 2087 goto exit; 2088 } 2089 } 2090 2091 exit: 2092 rte_kvargs_free(kvlist); 2093 return ret; 2094 } 2095 2096 static uint8_t 2097 rx_offload_enabled(struct virtio_hw *hw) 2098 { 2099 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2100 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2101 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2102 } 2103 2104 static uint8_t 2105 tx_offload_enabled(struct virtio_hw *hw) 2106 { 2107 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) || 2108 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2109 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2110 } 2111 2112 /* 2113 * Configure virtio device 2114 * It returns 0 on success. 2115 */ 2116 static int 2117 virtio_dev_configure(struct rte_eth_dev *dev) 2118 { 2119 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2120 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2121 struct virtio_hw *hw = dev->data->dev_private; 2122 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2123 hw->vtnet_hdr_size; 2124 uint64_t rx_offloads = rxmode->offloads; 2125 uint64_t tx_offloads = txmode->offloads; 2126 uint64_t req_features; 2127 int ret; 2128 2129 PMD_INIT_LOG(DEBUG, "configure"); 2130 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2131 2132 if (rxmode->mq_mode != RTE_ETH_MQ_RX_NONE && rxmode->mq_mode != RTE_ETH_MQ_RX_RSS) { 2133 PMD_DRV_LOG(ERR, 2134 "Unsupported Rx multi queue mode %d", 2135 rxmode->mq_mode); 2136 return -EINVAL; 2137 } 2138 2139 if (txmode->mq_mode != RTE_ETH_MQ_TX_NONE) { 2140 PMD_DRV_LOG(ERR, 2141 "Unsupported Tx multi queue mode %d", 2142 txmode->mq_mode); 2143 return -EINVAL; 2144 } 2145 2146 if (dev->data->dev_conf.intr_conf.rxq) { 2147 ret = virtio_init_device(dev, hw->req_guest_features); 2148 if (ret < 0) 2149 return ret; 2150 } 2151 2152 if (rxmode->mq_mode == RTE_ETH_MQ_RX_RSS) 2153 req_features |= (1ULL << VIRTIO_NET_F_RSS); 2154 2155 if (rxmode->mtu > hw->max_mtu) 2156 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2157 2158 hw->max_rx_pkt_len = ether_hdr_len + rxmode->mtu; 2159 2160 if (rx_offloads & (RTE_ETH_RX_OFFLOAD_UDP_CKSUM | 2161 RTE_ETH_RX_OFFLOAD_TCP_CKSUM)) 2162 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2163 2164 if (rx_offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) 2165 req_features |= 2166 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2167 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2168 2169 if (tx_offloads & (RTE_ETH_TX_OFFLOAD_UDP_CKSUM | 2170 RTE_ETH_TX_OFFLOAD_TCP_CKSUM)) 2171 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2172 2173 if (tx_offloads & RTE_ETH_TX_OFFLOAD_TCP_TSO) 2174 req_features |= 2175 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2176 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2177 2178 /* if request features changed, reinit the device */ 2179 if (req_features != hw->req_guest_features) { 2180 ret = virtio_init_device(dev, req_features); 2181 if (ret < 0) 2182 return ret; 2183 } 2184 2185 /* if queues are not allocated, reinit the device */ 2186 if (hw->vqs == NULL) { 2187 ret = virtio_init_device(dev, hw->req_guest_features); 2188 if (ret < 0) 2189 return ret; 2190 } 2191 2192 if ((rxmode->mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) && 2193 !virtio_with_feature(hw, VIRTIO_NET_F_RSS)) { 2194 PMD_DRV_LOG(ERR, "RSS support requested but not supported by the device"); 2195 return -ENOTSUP; 2196 } 2197 2198 if ((rx_offloads & (RTE_ETH_RX_OFFLOAD_UDP_CKSUM | 2199 RTE_ETH_RX_OFFLOAD_TCP_CKSUM)) && 2200 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2201 PMD_DRV_LOG(ERR, 2202 "rx checksum not available on this host"); 2203 return -ENOTSUP; 2204 } 2205 2206 if ((rx_offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) && 2207 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2208 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2209 PMD_DRV_LOG(ERR, 2210 "Large Receive Offload not available on this host"); 2211 return -ENOTSUP; 2212 } 2213 2214 /* start control queue */ 2215 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2216 virtio_dev_cq_start(dev); 2217 2218 if (rx_offloads & RTE_ETH_RX_OFFLOAD_VLAN_STRIP) 2219 hw->vlan_strip = 1; 2220 2221 hw->rx_ol_scatter = (rx_offloads & RTE_ETH_RX_OFFLOAD_SCATTER); 2222 2223 if ((rx_offloads & RTE_ETH_RX_OFFLOAD_VLAN_FILTER) && 2224 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2225 PMD_DRV_LOG(ERR, 2226 "vlan filtering not available on this host"); 2227 return -ENOTSUP; 2228 } 2229 2230 hw->has_tx_offload = tx_offload_enabled(hw); 2231 hw->has_rx_offload = rx_offload_enabled(hw); 2232 2233 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2234 /* Enable vector (0) for Link State Interrupt */ 2235 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) == 2236 VIRTIO_MSI_NO_VECTOR) { 2237 PMD_DRV_LOG(ERR, "failed to set config vector"); 2238 return -EBUSY; 2239 } 2240 2241 if (virtio_with_packed_queue(hw)) { 2242 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2243 if ((hw->use_vec_rx || hw->use_vec_tx) && 2244 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2245 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2246 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2247 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) { 2248 PMD_DRV_LOG(INFO, 2249 "disabled packed ring vectorized path for requirements not met"); 2250 hw->use_vec_rx = 0; 2251 hw->use_vec_tx = 0; 2252 } 2253 #elif defined(RTE_ARCH_ARM) 2254 if ((hw->use_vec_rx || hw->use_vec_tx) && 2255 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) || 2256 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) || 2257 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) || 2258 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) { 2259 PMD_DRV_LOG(INFO, 2260 "disabled packed ring vectorized path for requirements not met"); 2261 hw->use_vec_rx = 0; 2262 hw->use_vec_tx = 0; 2263 } 2264 #else 2265 hw->use_vec_rx = 0; 2266 hw->use_vec_tx = 0; 2267 #endif 2268 2269 if (hw->use_vec_rx) { 2270 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2271 PMD_DRV_LOG(INFO, 2272 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2273 hw->use_vec_rx = 0; 2274 } 2275 2276 if (rx_offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) { 2277 PMD_DRV_LOG(INFO, 2278 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2279 hw->use_vec_rx = 0; 2280 } 2281 } 2282 } else { 2283 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2284 hw->use_inorder_tx = 1; 2285 hw->use_inorder_rx = 1; 2286 hw->use_vec_rx = 0; 2287 } 2288 2289 if (hw->use_vec_rx) { 2290 #if defined RTE_ARCH_ARM 2291 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2292 PMD_DRV_LOG(INFO, 2293 "disabled split ring vectorized path for requirement not met"); 2294 hw->use_vec_rx = 0; 2295 } 2296 #endif 2297 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2298 PMD_DRV_LOG(INFO, 2299 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2300 hw->use_vec_rx = 0; 2301 } 2302 2303 if (rx_offloads & (RTE_ETH_RX_OFFLOAD_UDP_CKSUM | 2304 RTE_ETH_RX_OFFLOAD_TCP_CKSUM | 2305 RTE_ETH_RX_OFFLOAD_TCP_LRO | 2306 RTE_ETH_RX_OFFLOAD_VLAN_STRIP)) { 2307 PMD_DRV_LOG(INFO, 2308 "disabled split ring vectorized rx for offloading enabled"); 2309 hw->use_vec_rx = 0; 2310 } 2311 2312 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) { 2313 PMD_DRV_LOG(INFO, 2314 "disabled split ring vectorized rx, max SIMD bitwidth too low"); 2315 hw->use_vec_rx = 0; 2316 } 2317 } 2318 } 2319 2320 return 0; 2321 } 2322 2323 2324 static int 2325 virtio_dev_start(struct rte_eth_dev *dev) 2326 { 2327 uint16_t nb_queues, i; 2328 struct virtqueue *vq; 2329 struct virtio_hw *hw = dev->data->dev_private; 2330 int ret; 2331 2332 /* Finish the initialization of the queues */ 2333 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2334 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2335 if (ret < 0) 2336 return ret; 2337 } 2338 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2339 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2340 if (ret < 0) 2341 return ret; 2342 } 2343 2344 /* check if lsc interrupt feature is enabled */ 2345 if (dev->data->dev_conf.intr_conf.lsc) { 2346 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2347 PMD_DRV_LOG(ERR, "link status not supported by host"); 2348 return -ENOTSUP; 2349 } 2350 } 2351 2352 /* Enable uio/vfio intr/eventfd mapping: although we already did that 2353 * in device configure, but it could be unmapped when device is 2354 * stopped. 2355 */ 2356 if (dev->data->dev_conf.intr_conf.lsc || 2357 dev->data->dev_conf.intr_conf.rxq) { 2358 virtio_intr_disable(dev); 2359 2360 /* Setup interrupt callback */ 2361 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2362 rte_intr_callback_register(dev->intr_handle, 2363 virtio_interrupt_handler, 2364 dev); 2365 2366 if (virtio_intr_enable(dev) < 0) { 2367 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2368 return -EIO; 2369 } 2370 } 2371 2372 /*Notify the backend 2373 *Otherwise the tap backend might already stop its queue due to fullness. 2374 *vhost backend will have no chance to be waked up 2375 */ 2376 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2377 if (hw->max_queue_pairs > 1) { 2378 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2379 return -EINVAL; 2380 } 2381 2382 PMD_INIT_LOG(DEBUG, "nb_queues=%u (port=%u)", nb_queues, 2383 dev->data->port_id); 2384 2385 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2386 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2387 /* Flush the old packets */ 2388 virtqueue_rxvq_flush(vq); 2389 virtqueue_notify(vq); 2390 } 2391 2392 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2393 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2394 virtqueue_notify(vq); 2395 } 2396 2397 PMD_INIT_LOG(DEBUG, "Notified backend at initialization (port=%u)", 2398 dev->data->port_id); 2399 2400 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2401 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]); 2402 VIRTQUEUE_DUMP(vq); 2403 } 2404 2405 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2406 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]); 2407 VIRTQUEUE_DUMP(vq); 2408 } 2409 2410 set_rxtx_funcs(dev); 2411 hw->started = 1; 2412 2413 /* Initialize Link state */ 2414 virtio_dev_link_update(dev, 0); 2415 2416 return 0; 2417 } 2418 2419 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2420 { 2421 struct virtio_hw *hw = dev->data->dev_private; 2422 uint16_t nr_vq = virtio_get_nr_vq(hw); 2423 const char *type __rte_unused; 2424 unsigned int i, mbuf_num = 0; 2425 struct virtqueue *vq; 2426 struct rte_mbuf *buf; 2427 int queue_type; 2428 2429 if (hw->vqs == NULL) 2430 return; 2431 2432 for (i = 0; i < nr_vq; i++) { 2433 vq = hw->vqs[i]; 2434 if (!vq) 2435 continue; 2436 2437 queue_type = virtio_get_queue_type(hw, i); 2438 if (queue_type == VTNET_RQ) 2439 type = "rxq"; 2440 else if (queue_type == VTNET_TQ) 2441 type = "txq"; 2442 else 2443 continue; 2444 2445 PMD_INIT_LOG(DEBUG, 2446 "Before freeing %s[%d] used and unused buf", 2447 type, i); 2448 VIRTQUEUE_DUMP(vq); 2449 2450 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2451 rte_pktmbuf_free(buf); 2452 mbuf_num++; 2453 } 2454 2455 PMD_INIT_LOG(DEBUG, 2456 "After freeing %s[%d] used and unused buf", 2457 type, i); 2458 VIRTQUEUE_DUMP(vq); 2459 } 2460 2461 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2462 } 2463 2464 static void 2465 virtio_tx_completed_cleanup(struct rte_eth_dev *dev) 2466 { 2467 struct virtio_hw *hw = dev->data->dev_private; 2468 struct virtqueue *vq; 2469 int qidx; 2470 void (*xmit_cleanup)(struct virtqueue *vq, uint16_t nb_used); 2471 2472 if (virtio_with_packed_queue(hw)) { 2473 if (hw->use_vec_tx) 2474 xmit_cleanup = &virtio_xmit_cleanup_inorder_packed; 2475 else if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) 2476 xmit_cleanup = &virtio_xmit_cleanup_inorder_packed; 2477 else 2478 xmit_cleanup = &virtio_xmit_cleanup_normal_packed; 2479 } else { 2480 if (hw->use_inorder_tx) 2481 xmit_cleanup = &virtio_xmit_cleanup_inorder; 2482 else 2483 xmit_cleanup = &virtio_xmit_cleanup; 2484 } 2485 2486 for (qidx = 0; qidx < hw->max_queue_pairs; qidx++) { 2487 vq = hw->vqs[2 * qidx + VTNET_SQ_TQ_QUEUE_IDX]; 2488 if (vq != NULL) 2489 xmit_cleanup(vq, virtqueue_nused(vq)); 2490 } 2491 } 2492 2493 /* 2494 * Stop device: disable interrupt and mark link down 2495 */ 2496 int 2497 virtio_dev_stop(struct rte_eth_dev *dev) 2498 { 2499 struct virtio_hw *hw = dev->data->dev_private; 2500 struct rte_eth_link link; 2501 struct rte_eth_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2502 2503 PMD_INIT_LOG(DEBUG, "stop"); 2504 dev->data->dev_started = 0; 2505 2506 rte_spinlock_lock(&hw->state_lock); 2507 if (!hw->started) 2508 goto out_unlock; 2509 hw->started = 0; 2510 2511 virtio_tx_completed_cleanup(dev); 2512 2513 if (intr_conf->lsc || intr_conf->rxq) { 2514 virtio_intr_disable(dev); 2515 2516 /* Reset interrupt callback */ 2517 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2518 rte_intr_callback_unregister(dev->intr_handle, 2519 virtio_interrupt_handler, 2520 dev); 2521 } 2522 } 2523 2524 memset(&link, 0, sizeof(link)); 2525 rte_eth_linkstatus_set(dev, &link); 2526 out_unlock: 2527 rte_spinlock_unlock(&hw->state_lock); 2528 2529 return 0; 2530 } 2531 2532 static int 2533 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2534 { 2535 struct rte_eth_link link; 2536 uint16_t status; 2537 struct virtio_hw *hw = dev->data->dev_private; 2538 2539 memset(&link, 0, sizeof(link)); 2540 link.link_duplex = hw->duplex; 2541 link.link_speed = hw->speed; 2542 link.link_autoneg = RTE_ETH_LINK_AUTONEG; 2543 2544 if (!hw->started) { 2545 link.link_status = RTE_ETH_LINK_DOWN; 2546 link.link_speed = RTE_ETH_SPEED_NUM_NONE; 2547 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2548 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2549 virtio_read_dev_config(hw, 2550 offsetof(struct virtio_net_config, status), 2551 &status, sizeof(status)); 2552 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2553 link.link_status = RTE_ETH_LINK_DOWN; 2554 link.link_speed = RTE_ETH_SPEED_NUM_NONE; 2555 PMD_INIT_LOG(DEBUG, "Port %d is down", 2556 dev->data->port_id); 2557 } else { 2558 link.link_status = RTE_ETH_LINK_UP; 2559 if (hw->get_speed_via_feat) 2560 virtio_get_speed_duplex(dev, &link); 2561 PMD_INIT_LOG(DEBUG, "Port %d is up", 2562 dev->data->port_id); 2563 } 2564 } else { 2565 link.link_status = RTE_ETH_LINK_UP; 2566 if (hw->get_speed_via_feat) 2567 virtio_get_speed_duplex(dev, &link); 2568 } 2569 2570 return rte_eth_linkstatus_set(dev, &link); 2571 } 2572 2573 static int 2574 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2575 { 2576 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2577 struct virtio_hw *hw = dev->data->dev_private; 2578 uint64_t offloads = rxmode->offloads; 2579 2580 if (mask & RTE_ETH_VLAN_FILTER_MASK) { 2581 if ((offloads & RTE_ETH_RX_OFFLOAD_VLAN_FILTER) && 2582 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2583 2584 PMD_DRV_LOG(NOTICE, 2585 "vlan filtering not available on this host"); 2586 2587 return -ENOTSUP; 2588 } 2589 } 2590 2591 if (mask & RTE_ETH_VLAN_STRIP_MASK) 2592 hw->vlan_strip = !!(offloads & RTE_ETH_RX_OFFLOAD_VLAN_STRIP); 2593 2594 return 0; 2595 } 2596 2597 static int 2598 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2599 { 2600 uint64_t tso_mask, host_features; 2601 uint32_t rss_hash_types = 0; 2602 struct virtio_hw *hw = dev->data->dev_private; 2603 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2604 2605 dev_info->max_rx_queues = 2606 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2607 dev_info->max_tx_queues = 2608 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2609 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2610 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2611 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2612 dev_info->max_mtu = hw->max_mtu; 2613 2614 host_features = VIRTIO_OPS(hw)->get_features(hw); 2615 dev_info->rx_offload_capa = RTE_ETH_RX_OFFLOAD_VLAN_STRIP; 2616 if (host_features & (1ULL << VIRTIO_NET_F_MRG_RXBUF)) 2617 dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_SCATTER; 2618 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2619 dev_info->rx_offload_capa |= 2620 RTE_ETH_RX_OFFLOAD_TCP_CKSUM | 2621 RTE_ETH_RX_OFFLOAD_UDP_CKSUM; 2622 } 2623 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2624 dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_VLAN_FILTER; 2625 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2626 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2627 if ((host_features & tso_mask) == tso_mask) 2628 dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_TCP_LRO; 2629 2630 dev_info->tx_offload_capa = RTE_ETH_TX_OFFLOAD_MULTI_SEGS | 2631 RTE_ETH_TX_OFFLOAD_VLAN_INSERT; 2632 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2633 dev_info->tx_offload_capa |= 2634 RTE_ETH_TX_OFFLOAD_UDP_CKSUM | 2635 RTE_ETH_TX_OFFLOAD_TCP_CKSUM; 2636 } 2637 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2638 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2639 if ((host_features & tso_mask) == tso_mask) 2640 dev_info->tx_offload_capa |= RTE_ETH_TX_OFFLOAD_TCP_TSO; 2641 2642 if (host_features & (1ULL << VIRTIO_NET_F_RSS)) { 2643 virtio_dev_get_rss_config(hw, &rss_hash_types); 2644 dev_info->hash_key_size = VIRTIO_NET_RSS_KEY_SIZE; 2645 dev_info->reta_size = VIRTIO_NET_RSS_RETA_SIZE; 2646 dev_info->flow_type_rss_offloads = 2647 virtio_to_ethdev_rss_offloads(rss_hash_types); 2648 } else { 2649 dev_info->hash_key_size = 0; 2650 dev_info->reta_size = 0; 2651 dev_info->flow_type_rss_offloads = 0; 2652 } 2653 2654 if (host_features & (1ULL << VIRTIO_F_RING_PACKED)) { 2655 /* 2656 * According to 2.7 Packed Virtqueues, 2657 * 2.7.10.1 Structure Size and Alignment: 2658 * The Queue Size value does not have to be a power of 2. 2659 */ 2660 dev_info->rx_desc_lim.nb_max = UINT16_MAX; 2661 dev_info->tx_desc_lim.nb_max = UINT16_MAX; 2662 } else { 2663 /* 2664 * According to 2.6 Split Virtqueues: 2665 * Queue Size value is always a power of 2. The maximum Queue 2666 * Size value is 32768. 2667 */ 2668 dev_info->rx_desc_lim.nb_max = 32768; 2669 dev_info->tx_desc_lim.nb_max = 32768; 2670 } 2671 /* 2672 * Actual minimum is not the same for virtqueues of different kinds, 2673 * but to avoid tangling the code with separate branches, rely on 2674 * default thresholds since desc number must be at least of their size. 2675 */ 2676 dev_info->rx_desc_lim.nb_min = RTE_MAX(DEFAULT_RX_FREE_THRESH, 2677 RTE_VIRTIO_VPMD_RX_REARM_THRESH); 2678 dev_info->tx_desc_lim.nb_min = DEFAULT_TX_FREE_THRESH; 2679 dev_info->rx_desc_lim.nb_align = 1; 2680 dev_info->tx_desc_lim.nb_align = 1; 2681 2682 return 0; 2683 } 2684 2685 /* 2686 * It enables testpmd to collect per queue stats. 2687 */ 2688 static int 2689 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2690 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2691 __rte_unused uint8_t is_rx) 2692 { 2693 return 0; 2694 } 2695 2696 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_init, init, NOTICE); 2697 RTE_LOG_REGISTER_SUFFIX(virtio_logtype_driver, driver, NOTICE); 2698