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 <errno.h> 9 #include <unistd.h> 10 11 #include <rte_ethdev_driver.h> 12 #include <rte_ethdev_pci.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_pci.h> 19 #include <rte_bus_pci.h> 20 #include <rte_ether.h> 21 #include <rte_ip.h> 22 #include <rte_arp.h> 23 #include <rte_common.h> 24 #include <rte_errno.h> 25 #include <rte_cpuflags.h> 26 27 #include <rte_memory.h> 28 #include <rte_eal.h> 29 #include <rte_dev.h> 30 #include <rte_cycles.h> 31 #include <rte_kvargs.h> 32 33 #include "virtio_ethdev.h" 34 #include "virtio_pci.h" 35 #include "virtio_logs.h" 36 #include "virtqueue.h" 37 #include "virtio_rxtx.h" 38 39 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev); 40 static int virtio_dev_configure(struct rte_eth_dev *dev); 41 static int virtio_dev_start(struct rte_eth_dev *dev); 42 static void virtio_dev_stop(struct rte_eth_dev *dev); 43 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev); 44 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev); 45 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 46 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 47 static void virtio_dev_info_get(struct rte_eth_dev *dev, 48 struct rte_eth_dev_info *dev_info); 49 static int virtio_dev_link_update(struct rte_eth_dev *dev, 50 int wait_to_complete); 51 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask); 52 53 static void virtio_set_hwaddr(struct virtio_hw *hw); 54 static void virtio_get_hwaddr(struct virtio_hw *hw); 55 56 static int virtio_dev_stats_get(struct rte_eth_dev *dev, 57 struct rte_eth_stats *stats); 58 static int virtio_dev_xstats_get(struct rte_eth_dev *dev, 59 struct rte_eth_xstat *xstats, unsigned n); 60 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 61 struct rte_eth_xstat_name *xstats_names, 62 unsigned limit); 63 static void virtio_dev_stats_reset(struct rte_eth_dev *dev); 64 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev); 65 static int virtio_vlan_filter_set(struct rte_eth_dev *dev, 66 uint16_t vlan_id, int on); 67 static int virtio_mac_addr_add(struct rte_eth_dev *dev, 68 struct ether_addr *mac_addr, 69 uint32_t index, uint32_t vmdq); 70 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); 71 static int virtio_mac_addr_set(struct rte_eth_dev *dev, 72 struct ether_addr *mac_addr); 73 74 static int virtio_intr_enable(struct rte_eth_dev *dev); 75 static int virtio_intr_disable(struct rte_eth_dev *dev); 76 77 static int virtio_dev_queue_stats_mapping_set( 78 struct rte_eth_dev *eth_dev, 79 uint16_t queue_id, 80 uint8_t stat_idx, 81 uint8_t is_rx); 82 83 int virtio_logtype_init; 84 int virtio_logtype_driver; 85 86 static void virtio_notify_peers(struct rte_eth_dev *dev); 87 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 88 89 /* 90 * The set of PCI devices this driver supports 91 */ 92 static const struct rte_pci_id pci_id_virtio_map[] = { 93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) }, 94 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) }, 95 { .vendor_id = 0, /* sentinel */ }, 96 }; 97 98 struct rte_virtio_xstats_name_off { 99 char name[RTE_ETH_XSTATS_NAME_SIZE]; 100 unsigned offset; 101 }; 102 103 /* [rt]x_qX_ is prepended to the name string here */ 104 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 105 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 106 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 107 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 108 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 109 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 110 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 111 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 112 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 113 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 114 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 115 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 116 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 117 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 118 }; 119 120 /* [rt]x_qX_ is prepended to the name string here */ 121 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 122 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 123 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 124 {"errors", offsetof(struct virtnet_tx, stats.errors)}, 125 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 126 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 127 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 128 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 129 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 130 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 131 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 132 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 133 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 134 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 135 }; 136 137 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 138 sizeof(rte_virtio_rxq_stat_strings[0])) 139 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 140 sizeof(rte_virtio_txq_stat_strings[0])) 141 142 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 143 144 static struct virtio_pmd_ctrl * 145 virtio_pq_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 146 int *dlen, int pkt_num) 147 { 148 struct virtqueue *vq = cvq->vq; 149 int head; 150 struct vring_packed_desc *desc = vq->ring_packed.desc_packed; 151 struct virtio_pmd_ctrl *result; 152 int wrap_counter; 153 uint16_t flags; 154 int sum = 0; 155 int k; 156 157 /* 158 * Format is enforced in qemu code: 159 * One TX packet for header; 160 * At least one TX packet per argument; 161 * One RX packet for ACK. 162 */ 163 head = vq->vq_avail_idx; 164 wrap_counter = vq->avail_wrap_counter; 165 desc[head].flags = VRING_DESC_F_NEXT; 166 desc[head].addr = cvq->virtio_net_hdr_mem; 167 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 168 vq->vq_free_cnt--; 169 if (++vq->vq_avail_idx >= vq->vq_nentries) { 170 vq->vq_avail_idx -= vq->vq_nentries; 171 vq->avail_wrap_counter ^= 1; 172 } 173 174 for (k = 0; k < pkt_num; k++) { 175 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 176 + sizeof(struct virtio_net_ctrl_hdr) 177 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 178 desc[vq->vq_avail_idx].len = dlen[k]; 179 flags = VRING_DESC_F_NEXT; 180 sum += dlen[k]; 181 vq->vq_free_cnt--; 182 flags |= VRING_DESC_F_AVAIL(vq->avail_wrap_counter) | 183 VRING_DESC_F_USED(!vq->avail_wrap_counter); 184 desc[vq->vq_avail_idx].flags = flags; 185 rte_smp_wmb(); 186 vq->vq_free_cnt--; 187 if (++vq->vq_avail_idx >= vq->vq_nentries) { 188 vq->vq_avail_idx -= vq->vq_nentries; 189 vq->avail_wrap_counter ^= 1; 190 } 191 } 192 193 194 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 195 + sizeof(struct virtio_net_ctrl_hdr); 196 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 197 flags = VRING_DESC_F_WRITE; 198 flags |= VRING_DESC_F_AVAIL(vq->avail_wrap_counter) | 199 VRING_DESC_F_USED(!vq->avail_wrap_counter); 200 desc[vq->vq_avail_idx].flags = flags; 201 flags = VRING_DESC_F_NEXT; 202 flags |= VRING_DESC_F_AVAIL(wrap_counter) | 203 VRING_DESC_F_USED(!wrap_counter); 204 desc[head].flags = flags; 205 rte_smp_wmb(); 206 207 vq->vq_free_cnt--; 208 if (++vq->vq_avail_idx >= vq->vq_nentries) { 209 vq->vq_avail_idx -= vq->vq_nentries; 210 vq->avail_wrap_counter ^= 1; 211 } 212 213 virtqueue_notify(vq); 214 215 /* wait for used descriptors in virtqueue */ 216 do { 217 rte_rmb(); 218 usleep(100); 219 } while (!desc_is_used(&desc[head], vq)); 220 221 /* now get used descriptors */ 222 while (desc_is_used(&desc[vq->vq_used_cons_idx], vq)) { 223 vq->vq_free_cnt++; 224 if (++vq->vq_used_cons_idx >= vq->vq_nentries) { 225 vq->vq_used_cons_idx -= vq->vq_nentries; 226 vq->used_wrap_counter ^= 1; 227 } 228 } 229 230 result = cvq->virtio_net_hdr_mz->addr; 231 return result; 232 } 233 234 static int 235 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 236 int *dlen, int pkt_num) 237 { 238 uint32_t head, i; 239 int k, sum = 0; 240 virtio_net_ctrl_ack status = ~0; 241 struct virtio_pmd_ctrl *result; 242 struct virtqueue *vq; 243 244 ctrl->status = status; 245 246 if (!cvq || !cvq->vq) { 247 PMD_INIT_LOG(ERR, "Control queue is not supported."); 248 return -1; 249 } 250 251 rte_spinlock_lock(&cvq->lock); 252 vq = cvq->vq; 253 head = vq->vq_desc_head_idx; 254 255 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 256 "vq->hw->cvq = %p vq = %p", 257 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 258 259 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 260 rte_spinlock_unlock(&cvq->lock); 261 return -1; 262 } 263 264 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 265 sizeof(struct virtio_pmd_ctrl)); 266 267 if (vtpci_packed_queue(vq->hw)) { 268 result = virtio_pq_send_command(cvq, ctrl, dlen, pkt_num); 269 goto out_unlock; 270 } 271 272 /* 273 * Format is enforced in qemu code: 274 * One TX packet for header; 275 * At least one TX packet per argument; 276 * One RX packet for ACK. 277 */ 278 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT; 279 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem; 280 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 281 vq->vq_free_cnt--; 282 i = vq->vq_ring.desc[head].next; 283 284 for (k = 0; k < pkt_num; k++) { 285 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT; 286 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem 287 + sizeof(struct virtio_net_ctrl_hdr) 288 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 289 vq->vq_ring.desc[i].len = dlen[k]; 290 sum += dlen[k]; 291 vq->vq_free_cnt--; 292 i = vq->vq_ring.desc[i].next; 293 } 294 295 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE; 296 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem 297 + sizeof(struct virtio_net_ctrl_hdr); 298 vq->vq_ring.desc[i].len = sizeof(ctrl->status); 299 vq->vq_free_cnt--; 300 301 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next; 302 303 vq_update_avail_ring(vq, head); 304 vq_update_avail_idx(vq); 305 306 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 307 308 virtqueue_notify(vq); 309 310 rte_rmb(); 311 while (VIRTQUEUE_NUSED(vq) == 0) { 312 rte_rmb(); 313 usleep(100); 314 } 315 316 while (VIRTQUEUE_NUSED(vq)) { 317 uint32_t idx, desc_idx, used_idx; 318 struct vring_used_elem *uep; 319 320 used_idx = (uint32_t)(vq->vq_used_cons_idx 321 & (vq->vq_nentries - 1)); 322 uep = &vq->vq_ring.used->ring[used_idx]; 323 idx = (uint32_t) uep->id; 324 desc_idx = idx; 325 326 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) { 327 desc_idx = vq->vq_ring.desc[desc_idx].next; 328 vq->vq_free_cnt++; 329 } 330 331 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx; 332 vq->vq_desc_head_idx = idx; 333 334 vq->vq_used_cons_idx++; 335 vq->vq_free_cnt++; 336 } 337 338 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 339 vq->vq_free_cnt, vq->vq_desc_head_idx); 340 341 result = cvq->virtio_net_hdr_mz->addr; 342 343 out_unlock: 344 rte_spinlock_unlock(&cvq->lock); 345 return result->status; 346 } 347 348 static int 349 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 350 { 351 struct virtio_hw *hw = dev->data->dev_private; 352 struct virtio_pmd_ctrl ctrl; 353 int dlen[1]; 354 int ret; 355 356 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 357 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 358 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 359 360 dlen[0] = sizeof(uint16_t); 361 362 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 363 if (ret) { 364 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 365 "failed, this is too late now..."); 366 return -EINVAL; 367 } 368 369 return 0; 370 } 371 372 static void 373 virtio_dev_queue_release(void *queue __rte_unused) 374 { 375 /* do nothing */ 376 } 377 378 static uint16_t 379 virtio_get_nr_vq(struct virtio_hw *hw) 380 { 381 uint16_t nr_vq = hw->max_queue_pairs * 2; 382 383 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 384 nr_vq += 1; 385 386 return nr_vq; 387 } 388 389 static void 390 virtio_init_vring(struct virtqueue *vq) 391 { 392 int size = vq->vq_nentries; 393 struct vring *vr = &vq->vq_ring; 394 uint8_t *ring_mem = vq->vq_ring_virt_mem; 395 396 PMD_INIT_FUNC_TRACE(); 397 398 memset(ring_mem, 0, vq->vq_ring_size); 399 400 vq->vq_used_cons_idx = 0; 401 vq->vq_desc_head_idx = 0; 402 vq->vq_avail_idx = 0; 403 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 404 vq->vq_free_cnt = vq->vq_nentries; 405 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 406 if (vtpci_packed_queue(vq->hw)) { 407 vring_init_packed(&vq->ring_packed, ring_mem, 408 VIRTIO_PCI_VRING_ALIGN, size); 409 vring_desc_init_packed(vq, size); 410 } else { 411 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size); 412 vring_desc_init_split(vr->desc, size); 413 } 414 /* 415 * Disable device(host) interrupting guest 416 */ 417 virtqueue_disable_intr(vq); 418 } 419 420 static int 421 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) 422 { 423 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 424 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 425 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 426 unsigned int vq_size, size; 427 struct virtio_hw *hw = dev->data->dev_private; 428 struct virtnet_rx *rxvq = NULL; 429 struct virtnet_tx *txvq = NULL; 430 struct virtnet_ctl *cvq = NULL; 431 struct virtqueue *vq; 432 size_t sz_hdr_mz = 0; 433 void *sw_ring = NULL; 434 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx); 435 int ret; 436 int numa_node = dev->device->numa_node; 437 438 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 439 vtpci_queue_idx, numa_node); 440 441 /* 442 * Read the virtqueue size from the Queue Size field 443 * Always power of 2 and if 0 virtqueue does not exist 444 */ 445 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx); 446 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 447 if (vq_size == 0) { 448 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 449 return -EINVAL; 450 } 451 452 if (!rte_is_power_of_2(vq_size)) { 453 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2"); 454 return -EINVAL; 455 } 456 457 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 458 dev->data->port_id, vtpci_queue_idx); 459 460 size = RTE_ALIGN_CEIL(sizeof(*vq) + 461 vq_size * sizeof(struct vq_desc_extra), 462 RTE_CACHE_LINE_SIZE); 463 if (queue_type == VTNET_TQ) { 464 /* 465 * For each xmit packet, allocate a virtio_net_hdr 466 * and indirect ring elements 467 */ 468 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 469 } else if (queue_type == VTNET_CQ) { 470 /* Allocate a page for control vq command, data and status */ 471 sz_hdr_mz = PAGE_SIZE; 472 } 473 474 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 475 numa_node); 476 if (vq == NULL) { 477 PMD_INIT_LOG(ERR, "can not allocate vq"); 478 return -ENOMEM; 479 } 480 hw->vqs[vtpci_queue_idx] = vq; 481 482 vq->hw = hw; 483 vq->vq_queue_index = vtpci_queue_idx; 484 vq->vq_nentries = vq_size; 485 vq->event_flags_shadow = 0; 486 if (vtpci_packed_queue(hw)) { 487 vq->avail_wrap_counter = 1; 488 vq->used_wrap_counter = 1; 489 vq->avail_used_flags = 490 VRING_DESC_F_AVAIL(vq->avail_wrap_counter) | 491 VRING_DESC_F_USED(!vq->avail_wrap_counter); 492 } 493 494 /* 495 * Reserve a memzone for vring elements 496 */ 497 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN); 498 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN); 499 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 500 size, vq->vq_ring_size); 501 502 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 503 numa_node, RTE_MEMZONE_IOVA_CONTIG, 504 VIRTIO_PCI_VRING_ALIGN); 505 if (mz == NULL) { 506 if (rte_errno == EEXIST) 507 mz = rte_memzone_lookup(vq_name); 508 if (mz == NULL) { 509 ret = -ENOMEM; 510 goto fail_q_alloc; 511 } 512 } 513 514 memset(mz->addr, 0, mz->len); 515 516 vq->vq_ring_mem = mz->iova; 517 vq->vq_ring_virt_mem = mz->addr; 518 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 519 (uint64_t)mz->iova); 520 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 521 (uint64_t)(uintptr_t)mz->addr); 522 523 virtio_init_vring(vq); 524 525 if (sz_hdr_mz) { 526 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 527 dev->data->port_id, vtpci_queue_idx); 528 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 529 numa_node, RTE_MEMZONE_IOVA_CONTIG, 530 RTE_CACHE_LINE_SIZE); 531 if (hdr_mz == NULL) { 532 if (rte_errno == EEXIST) 533 hdr_mz = rte_memzone_lookup(vq_hdr_name); 534 if (hdr_mz == NULL) { 535 ret = -ENOMEM; 536 goto fail_q_alloc; 537 } 538 } 539 } 540 541 if (queue_type == VTNET_RQ) { 542 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 543 sizeof(vq->sw_ring[0]); 544 545 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 546 RTE_CACHE_LINE_SIZE, numa_node); 547 if (!sw_ring) { 548 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 549 ret = -ENOMEM; 550 goto fail_q_alloc; 551 } 552 553 vq->sw_ring = sw_ring; 554 rxvq = &vq->rxq; 555 rxvq->vq = vq; 556 rxvq->port_id = dev->data->port_id; 557 rxvq->mz = mz; 558 } else if (queue_type == VTNET_TQ) { 559 txvq = &vq->txq; 560 txvq->vq = vq; 561 txvq->port_id = dev->data->port_id; 562 txvq->mz = mz; 563 txvq->virtio_net_hdr_mz = hdr_mz; 564 txvq->virtio_net_hdr_mem = hdr_mz->iova; 565 } else if (queue_type == VTNET_CQ) { 566 cvq = &vq->cq; 567 cvq->vq = vq; 568 cvq->mz = mz; 569 cvq->virtio_net_hdr_mz = hdr_mz; 570 cvq->virtio_net_hdr_mem = hdr_mz->iova; 571 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE); 572 573 hw->cvq = cvq; 574 } 575 576 /* For virtio_user case (that is when hw->dev is NULL), we use 577 * virtual address. And we need properly set _offset_, please see 578 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information. 579 */ 580 if (!hw->virtio_user_dev) 581 vq->offset = offsetof(struct rte_mbuf, buf_iova); 582 else { 583 vq->vq_ring_mem = (uintptr_t)mz->addr; 584 vq->offset = offsetof(struct rte_mbuf, buf_addr); 585 if (queue_type == VTNET_TQ) 586 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 587 else if (queue_type == VTNET_CQ) 588 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 589 } 590 591 if (queue_type == VTNET_TQ) { 592 struct virtio_tx_region *txr; 593 unsigned int i; 594 595 txr = hdr_mz->addr; 596 memset(txr, 0, vq_size * sizeof(*txr)); 597 for (i = 0; i < vq_size; i++) { 598 struct vring_desc *start_dp = txr[i].tx_indir; 599 struct vring_packed_desc *start_dp_packed = 600 txr[i].tx_indir_pq; 601 602 /* first indirect descriptor is always the tx header */ 603 if (vtpci_packed_queue(hw)) { 604 start_dp_packed->addr = txvq->virtio_net_hdr_mem 605 + i * sizeof(*txr) 606 + offsetof(struct virtio_tx_region, 607 tx_hdr); 608 start_dp_packed->len = hw->vtnet_hdr_size; 609 } else { 610 vring_desc_init_split(start_dp, 611 RTE_DIM(txr[i].tx_indir)); 612 start_dp->addr = txvq->virtio_net_hdr_mem 613 + i * sizeof(*txr) 614 + offsetof(struct virtio_tx_region, 615 tx_hdr); 616 start_dp->len = hw->vtnet_hdr_size; 617 start_dp->flags = VRING_DESC_F_NEXT; 618 } 619 } 620 } 621 622 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) { 623 PMD_INIT_LOG(ERR, "setup_queue failed"); 624 return -EINVAL; 625 } 626 627 return 0; 628 629 fail_q_alloc: 630 rte_free(sw_ring); 631 rte_memzone_free(hdr_mz); 632 rte_memzone_free(mz); 633 rte_free(vq); 634 635 return ret; 636 } 637 638 static void 639 virtio_free_queues(struct virtio_hw *hw) 640 { 641 uint16_t nr_vq = virtio_get_nr_vq(hw); 642 struct virtqueue *vq; 643 int queue_type; 644 uint16_t i; 645 646 if (hw->vqs == NULL) 647 return; 648 649 for (i = 0; i < nr_vq; i++) { 650 vq = hw->vqs[i]; 651 if (!vq) 652 continue; 653 654 queue_type = virtio_get_queue_type(hw, i); 655 if (queue_type == VTNET_RQ) { 656 rte_free(vq->sw_ring); 657 rte_memzone_free(vq->rxq.mz); 658 } else if (queue_type == VTNET_TQ) { 659 rte_memzone_free(vq->txq.mz); 660 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 661 } else { 662 rte_memzone_free(vq->cq.mz); 663 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 664 } 665 666 rte_free(vq); 667 hw->vqs[i] = NULL; 668 } 669 670 rte_free(hw->vqs); 671 hw->vqs = NULL; 672 } 673 674 static int 675 virtio_alloc_queues(struct rte_eth_dev *dev) 676 { 677 struct virtio_hw *hw = dev->data->dev_private; 678 uint16_t nr_vq = virtio_get_nr_vq(hw); 679 uint16_t i; 680 int ret; 681 682 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 683 if (!hw->vqs) { 684 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 685 return -ENOMEM; 686 } 687 688 for (i = 0; i < nr_vq; i++) { 689 ret = virtio_init_queue(dev, i); 690 if (ret < 0) { 691 virtio_free_queues(hw); 692 return ret; 693 } 694 } 695 696 return 0; 697 } 698 699 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 700 701 static void 702 virtio_dev_close(struct rte_eth_dev *dev) 703 { 704 struct virtio_hw *hw = dev->data->dev_private; 705 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 706 707 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 708 709 if (!hw->opened) 710 return; 711 hw->opened = false; 712 713 /* reset the NIC */ 714 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 715 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 716 if (intr_conf->rxq) 717 virtio_queues_unbind_intr(dev); 718 719 if (intr_conf->lsc || intr_conf->rxq) { 720 virtio_intr_disable(dev); 721 rte_intr_efd_disable(dev->intr_handle); 722 rte_free(dev->intr_handle->intr_vec); 723 dev->intr_handle->intr_vec = NULL; 724 } 725 726 vtpci_reset(hw); 727 virtio_dev_free_mbufs(dev); 728 virtio_free_queues(hw); 729 } 730 731 static void 732 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 733 { 734 struct virtio_hw *hw = dev->data->dev_private; 735 struct virtio_pmd_ctrl ctrl; 736 int dlen[1]; 737 int ret; 738 739 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 740 PMD_INIT_LOG(INFO, "host does not support rx control"); 741 return; 742 } 743 744 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 745 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 746 ctrl.data[0] = 1; 747 dlen[0] = 1; 748 749 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 750 if (ret) 751 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 752 } 753 754 static void 755 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 756 { 757 struct virtio_hw *hw = dev->data->dev_private; 758 struct virtio_pmd_ctrl ctrl; 759 int dlen[1]; 760 int ret; 761 762 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 763 PMD_INIT_LOG(INFO, "host does not support rx control"); 764 return; 765 } 766 767 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 768 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 769 ctrl.data[0] = 0; 770 dlen[0] = 1; 771 772 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 773 if (ret) 774 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 775 } 776 777 static void 778 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 779 { 780 struct virtio_hw *hw = dev->data->dev_private; 781 struct virtio_pmd_ctrl ctrl; 782 int dlen[1]; 783 int ret; 784 785 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 786 PMD_INIT_LOG(INFO, "host does not support rx control"); 787 return; 788 } 789 790 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 791 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 792 ctrl.data[0] = 1; 793 dlen[0] = 1; 794 795 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 796 if (ret) 797 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 798 } 799 800 static void 801 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 802 { 803 struct virtio_hw *hw = dev->data->dev_private; 804 struct virtio_pmd_ctrl ctrl; 805 int dlen[1]; 806 int ret; 807 808 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 809 PMD_INIT_LOG(INFO, "host does not support rx control"); 810 return; 811 } 812 813 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 814 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 815 ctrl.data[0] = 0; 816 dlen[0] = 1; 817 818 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 819 if (ret) 820 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 821 } 822 823 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 824 static int 825 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 826 { 827 struct virtio_hw *hw = dev->data->dev_private; 828 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + 829 hw->vtnet_hdr_size; 830 uint32_t frame_size = mtu + ether_hdr_len; 831 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 832 833 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 834 835 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) { 836 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 837 ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 838 return -EINVAL; 839 } 840 return 0; 841 } 842 843 static int 844 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 845 { 846 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 847 struct virtqueue *vq = rxvq->vq; 848 849 virtqueue_enable_intr(vq); 850 return 0; 851 } 852 853 static int 854 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 855 { 856 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 857 struct virtqueue *vq = rxvq->vq; 858 859 virtqueue_disable_intr(vq); 860 return 0; 861 } 862 863 /* 864 * dev_ops for virtio, bare necessities for basic operation 865 */ 866 static const struct eth_dev_ops virtio_eth_dev_ops = { 867 .dev_configure = virtio_dev_configure, 868 .dev_start = virtio_dev_start, 869 .dev_stop = virtio_dev_stop, 870 .dev_close = virtio_dev_close, 871 .promiscuous_enable = virtio_dev_promiscuous_enable, 872 .promiscuous_disable = virtio_dev_promiscuous_disable, 873 .allmulticast_enable = virtio_dev_allmulticast_enable, 874 .allmulticast_disable = virtio_dev_allmulticast_disable, 875 .mtu_set = virtio_mtu_set, 876 .dev_infos_get = virtio_dev_info_get, 877 .stats_get = virtio_dev_stats_get, 878 .xstats_get = virtio_dev_xstats_get, 879 .xstats_get_names = virtio_dev_xstats_get_names, 880 .stats_reset = virtio_dev_stats_reset, 881 .xstats_reset = virtio_dev_stats_reset, 882 .link_update = virtio_dev_link_update, 883 .vlan_offload_set = virtio_dev_vlan_offload_set, 884 .rx_queue_setup = virtio_dev_rx_queue_setup, 885 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 886 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 887 .rx_queue_release = virtio_dev_queue_release, 888 .rx_descriptor_done = virtio_dev_rx_queue_done, 889 .tx_queue_setup = virtio_dev_tx_queue_setup, 890 .tx_queue_release = virtio_dev_queue_release, 891 /* collect stats per queue */ 892 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 893 .vlan_filter_set = virtio_vlan_filter_set, 894 .mac_addr_add = virtio_mac_addr_add, 895 .mac_addr_remove = virtio_mac_addr_remove, 896 .mac_addr_set = virtio_mac_addr_set, 897 }; 898 899 static void 900 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 901 { 902 unsigned i; 903 904 for (i = 0; i < dev->data->nb_tx_queues; i++) { 905 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 906 if (txvq == NULL) 907 continue; 908 909 stats->opackets += txvq->stats.packets; 910 stats->obytes += txvq->stats.bytes; 911 stats->oerrors += txvq->stats.errors; 912 913 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 914 stats->q_opackets[i] = txvq->stats.packets; 915 stats->q_obytes[i] = txvq->stats.bytes; 916 } 917 } 918 919 for (i = 0; i < dev->data->nb_rx_queues; i++) { 920 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 921 if (rxvq == NULL) 922 continue; 923 924 stats->ipackets += rxvq->stats.packets; 925 stats->ibytes += rxvq->stats.bytes; 926 stats->ierrors += rxvq->stats.errors; 927 928 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 929 stats->q_ipackets[i] = rxvq->stats.packets; 930 stats->q_ibytes[i] = rxvq->stats.bytes; 931 } 932 } 933 934 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 935 } 936 937 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 938 struct rte_eth_xstat_name *xstats_names, 939 __rte_unused unsigned limit) 940 { 941 unsigned i; 942 unsigned count = 0; 943 unsigned t; 944 945 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 946 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 947 948 if (xstats_names != NULL) { 949 /* Note: limit checked in rte_eth_xstats_names() */ 950 951 for (i = 0; i < dev->data->nb_rx_queues; i++) { 952 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 953 if (rxvq == NULL) 954 continue; 955 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 956 snprintf(xstats_names[count].name, 957 sizeof(xstats_names[count].name), 958 "rx_q%u_%s", i, 959 rte_virtio_rxq_stat_strings[t].name); 960 count++; 961 } 962 } 963 964 for (i = 0; i < dev->data->nb_tx_queues; i++) { 965 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 966 if (txvq == NULL) 967 continue; 968 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 969 snprintf(xstats_names[count].name, 970 sizeof(xstats_names[count].name), 971 "tx_q%u_%s", i, 972 rte_virtio_txq_stat_strings[t].name); 973 count++; 974 } 975 } 976 return count; 977 } 978 return nstats; 979 } 980 981 static int 982 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 983 unsigned n) 984 { 985 unsigned i; 986 unsigned count = 0; 987 988 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 989 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 990 991 if (n < nstats) 992 return nstats; 993 994 for (i = 0; i < dev->data->nb_rx_queues; i++) { 995 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 996 997 if (rxvq == NULL) 998 continue; 999 1000 unsigned t; 1001 1002 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1003 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1004 rte_virtio_rxq_stat_strings[t].offset); 1005 xstats[count].id = count; 1006 count++; 1007 } 1008 } 1009 1010 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1011 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1012 1013 if (txvq == NULL) 1014 continue; 1015 1016 unsigned t; 1017 1018 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1019 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1020 rte_virtio_txq_stat_strings[t].offset); 1021 xstats[count].id = count; 1022 count++; 1023 } 1024 } 1025 1026 return count; 1027 } 1028 1029 static int 1030 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1031 { 1032 virtio_update_stats(dev, stats); 1033 1034 return 0; 1035 } 1036 1037 static void 1038 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1039 { 1040 unsigned int i; 1041 1042 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1043 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1044 if (txvq == NULL) 1045 continue; 1046 1047 txvq->stats.packets = 0; 1048 txvq->stats.bytes = 0; 1049 txvq->stats.errors = 0; 1050 txvq->stats.multicast = 0; 1051 txvq->stats.broadcast = 0; 1052 memset(txvq->stats.size_bins, 0, 1053 sizeof(txvq->stats.size_bins[0]) * 8); 1054 } 1055 1056 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1057 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1058 if (rxvq == NULL) 1059 continue; 1060 1061 rxvq->stats.packets = 0; 1062 rxvq->stats.bytes = 0; 1063 rxvq->stats.errors = 0; 1064 rxvq->stats.multicast = 0; 1065 rxvq->stats.broadcast = 0; 1066 memset(rxvq->stats.size_bins, 0, 1067 sizeof(rxvq->stats.size_bins[0]) * 8); 1068 } 1069 } 1070 1071 static void 1072 virtio_set_hwaddr(struct virtio_hw *hw) 1073 { 1074 vtpci_write_dev_config(hw, 1075 offsetof(struct virtio_net_config, mac), 1076 &hw->mac_addr, ETHER_ADDR_LEN); 1077 } 1078 1079 static void 1080 virtio_get_hwaddr(struct virtio_hw *hw) 1081 { 1082 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) { 1083 vtpci_read_dev_config(hw, 1084 offsetof(struct virtio_net_config, mac), 1085 &hw->mac_addr, ETHER_ADDR_LEN); 1086 } else { 1087 eth_random_addr(&hw->mac_addr[0]); 1088 virtio_set_hwaddr(hw); 1089 } 1090 } 1091 1092 static int 1093 virtio_mac_table_set(struct virtio_hw *hw, 1094 const struct virtio_net_ctrl_mac *uc, 1095 const struct virtio_net_ctrl_mac *mc) 1096 { 1097 struct virtio_pmd_ctrl ctrl; 1098 int err, len[2]; 1099 1100 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1101 PMD_DRV_LOG(INFO, "host does not support mac table"); 1102 return -1; 1103 } 1104 1105 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1106 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1107 1108 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries); 1109 memcpy(ctrl.data, uc, len[0]); 1110 1111 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries); 1112 memcpy(ctrl.data + len[0], mc, len[1]); 1113 1114 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1115 if (err != 0) 1116 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1117 return err; 1118 } 1119 1120 static int 1121 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, 1122 uint32_t index, uint32_t vmdq __rte_unused) 1123 { 1124 struct virtio_hw *hw = dev->data->dev_private; 1125 const struct ether_addr *addrs = dev->data->mac_addrs; 1126 unsigned int i; 1127 struct virtio_net_ctrl_mac *uc, *mc; 1128 1129 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1130 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1131 return -EINVAL; 1132 } 1133 1134 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1135 uc->entries = 0; 1136 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1137 mc->entries = 0; 1138 1139 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1140 const struct ether_addr *addr 1141 = (i == index) ? mac_addr : addrs + i; 1142 struct virtio_net_ctrl_mac *tbl 1143 = is_multicast_ether_addr(addr) ? mc : uc; 1144 1145 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN); 1146 } 1147 1148 return virtio_mac_table_set(hw, uc, mc); 1149 } 1150 1151 static void 1152 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1153 { 1154 struct virtio_hw *hw = dev->data->dev_private; 1155 struct ether_addr *addrs = dev->data->mac_addrs; 1156 struct virtio_net_ctrl_mac *uc, *mc; 1157 unsigned int i; 1158 1159 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1160 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1161 return; 1162 } 1163 1164 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1165 uc->entries = 0; 1166 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1167 mc->entries = 0; 1168 1169 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1170 struct virtio_net_ctrl_mac *tbl; 1171 1172 if (i == index || is_zero_ether_addr(addrs + i)) 1173 continue; 1174 1175 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc; 1176 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN); 1177 } 1178 1179 virtio_mac_table_set(hw, uc, mc); 1180 } 1181 1182 static int 1183 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr) 1184 { 1185 struct virtio_hw *hw = dev->data->dev_private; 1186 1187 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN); 1188 1189 /* Use atomic update if available */ 1190 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1191 struct virtio_pmd_ctrl ctrl; 1192 int len = ETHER_ADDR_LEN; 1193 1194 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1195 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1196 1197 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN); 1198 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1199 } 1200 1201 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1202 return -ENOTSUP; 1203 1204 virtio_set_hwaddr(hw); 1205 return 0; 1206 } 1207 1208 static int 1209 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1210 { 1211 struct virtio_hw *hw = dev->data->dev_private; 1212 struct virtio_pmd_ctrl ctrl; 1213 int len; 1214 1215 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1216 return -ENOTSUP; 1217 1218 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1219 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1220 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1221 len = sizeof(vlan_id); 1222 1223 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1224 } 1225 1226 static int 1227 virtio_intr_enable(struct rte_eth_dev *dev) 1228 { 1229 struct virtio_hw *hw = dev->data->dev_private; 1230 1231 if (rte_intr_enable(dev->intr_handle) < 0) 1232 return -1; 1233 1234 if (!hw->virtio_user_dev) 1235 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1236 1237 return 0; 1238 } 1239 1240 static int 1241 virtio_intr_disable(struct rte_eth_dev *dev) 1242 { 1243 struct virtio_hw *hw = dev->data->dev_private; 1244 1245 if (rte_intr_disable(dev->intr_handle) < 0) 1246 return -1; 1247 1248 if (!hw->virtio_user_dev) 1249 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1250 1251 return 0; 1252 } 1253 1254 static int 1255 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1256 { 1257 uint64_t host_features; 1258 1259 /* Prepare guest_features: feature that driver wants to support */ 1260 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1261 req_features); 1262 1263 /* Read device(host) feature bits */ 1264 host_features = VTPCI_OPS(hw)->get_features(hw); 1265 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1266 host_features); 1267 1268 /* If supported, ensure MTU value is valid before acknowledging it. */ 1269 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1270 struct virtio_net_config config; 1271 1272 vtpci_read_dev_config(hw, 1273 offsetof(struct virtio_net_config, mtu), 1274 &config.mtu, sizeof(config.mtu)); 1275 1276 if (config.mtu < ETHER_MIN_MTU) 1277 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1278 } 1279 1280 /* 1281 * Negotiate features: Subset of device feature bits are written back 1282 * guest feature bits. 1283 */ 1284 hw->guest_features = req_features; 1285 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1286 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1287 hw->guest_features); 1288 1289 if (hw->modern) { 1290 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1291 PMD_INIT_LOG(ERR, 1292 "VIRTIO_F_VERSION_1 features is not enabled."); 1293 return -1; 1294 } 1295 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1296 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1297 PMD_INIT_LOG(ERR, 1298 "failed to set FEATURES_OK status!"); 1299 return -1; 1300 } 1301 } 1302 1303 hw->req_guest_features = req_features; 1304 1305 return 0; 1306 } 1307 1308 int 1309 virtio_dev_pause(struct rte_eth_dev *dev) 1310 { 1311 struct virtio_hw *hw = dev->data->dev_private; 1312 1313 rte_spinlock_lock(&hw->state_lock); 1314 1315 if (hw->started == 0) { 1316 /* Device is just stopped. */ 1317 rte_spinlock_unlock(&hw->state_lock); 1318 return -1; 1319 } 1320 hw->started = 0; 1321 /* 1322 * Prevent the worker threads from touching queues to avoid contention, 1323 * 1 ms should be enough for the ongoing Tx function to finish. 1324 */ 1325 rte_delay_ms(1); 1326 return 0; 1327 } 1328 1329 /* 1330 * Recover hw state to let the worker threads continue. 1331 */ 1332 void 1333 virtio_dev_resume(struct rte_eth_dev *dev) 1334 { 1335 struct virtio_hw *hw = dev->data->dev_private; 1336 1337 hw->started = 1; 1338 rte_spinlock_unlock(&hw->state_lock); 1339 } 1340 1341 /* 1342 * Should be called only after device is paused. 1343 */ 1344 int 1345 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1346 int nb_pkts) 1347 { 1348 struct virtio_hw *hw = dev->data->dev_private; 1349 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1350 int ret; 1351 1352 hw->inject_pkts = tx_pkts; 1353 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1354 hw->inject_pkts = NULL; 1355 1356 return ret; 1357 } 1358 1359 static void 1360 virtio_notify_peers(struct rte_eth_dev *dev) 1361 { 1362 struct virtio_hw *hw = dev->data->dev_private; 1363 struct virtnet_rx *rxvq; 1364 struct rte_mbuf *rarp_mbuf; 1365 1366 if (!dev->data->rx_queues) 1367 return; 1368 1369 rxvq = dev->data->rx_queues[0]; 1370 if (!rxvq) 1371 return; 1372 1373 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1374 (struct ether_addr *)hw->mac_addr); 1375 if (rarp_mbuf == NULL) { 1376 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1377 return; 1378 } 1379 1380 /* If virtio port just stopped, no need to send RARP */ 1381 if (virtio_dev_pause(dev) < 0) { 1382 rte_pktmbuf_free(rarp_mbuf); 1383 return; 1384 } 1385 1386 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1387 virtio_dev_resume(dev); 1388 } 1389 1390 static void 1391 virtio_ack_link_announce(struct rte_eth_dev *dev) 1392 { 1393 struct virtio_hw *hw = dev->data->dev_private; 1394 struct virtio_pmd_ctrl ctrl; 1395 1396 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1397 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1398 1399 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1400 } 1401 1402 /* 1403 * Process virtio config changed interrupt. Call the callback 1404 * if link state changed, generate gratuitous RARP packet if 1405 * the status indicates an ANNOUNCE. 1406 */ 1407 void 1408 virtio_interrupt_handler(void *param) 1409 { 1410 struct rte_eth_dev *dev = param; 1411 struct virtio_hw *hw = dev->data->dev_private; 1412 uint8_t isr; 1413 uint16_t status; 1414 1415 /* Read interrupt status which clears interrupt */ 1416 isr = vtpci_isr(hw); 1417 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1418 1419 if (virtio_intr_enable(dev) < 0) 1420 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1421 1422 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1423 if (virtio_dev_link_update(dev, 0) == 0) 1424 _rte_eth_dev_callback_process(dev, 1425 RTE_ETH_EVENT_INTR_LSC, 1426 NULL); 1427 1428 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1429 vtpci_read_dev_config(hw, 1430 offsetof(struct virtio_net_config, status), 1431 &status, sizeof(status)); 1432 if (status & VIRTIO_NET_S_ANNOUNCE) { 1433 virtio_notify_peers(dev); 1434 if (hw->cvq) 1435 virtio_ack_link_announce(dev); 1436 } 1437 } 1438 } 1439 } 1440 1441 /* set rx and tx handlers according to what is supported */ 1442 static void 1443 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1444 { 1445 struct virtio_hw *hw = eth_dev->data->dev_private; 1446 1447 if (vtpci_packed_queue(hw)) { 1448 PMD_INIT_LOG(INFO, 1449 "virtio: using packed ring standard Tx path on port %u", 1450 eth_dev->data->port_id); 1451 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1452 } else { 1453 if (hw->use_inorder_tx) { 1454 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1455 eth_dev->data->port_id); 1456 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1457 } else { 1458 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1459 eth_dev->data->port_id); 1460 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1461 } 1462 } 1463 1464 if (vtpci_packed_queue(hw)) { 1465 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1466 PMD_INIT_LOG(INFO, 1467 "virtio: using packed ring mergeable buffer Rx path on port %u", 1468 eth_dev->data->port_id); 1469 eth_dev->rx_pkt_burst = 1470 &virtio_recv_mergeable_pkts_packed; 1471 } else { 1472 PMD_INIT_LOG(INFO, 1473 "virtio: using packed ring standard Rx path on port %u", 1474 eth_dev->data->port_id); 1475 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1476 } 1477 } else { 1478 if (hw->use_simple_rx) { 1479 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", 1480 eth_dev->data->port_id); 1481 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1482 } else if (hw->use_inorder_rx) { 1483 PMD_INIT_LOG(INFO, 1484 "virtio: using inorder Rx path on port %u", 1485 eth_dev->data->port_id); 1486 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1487 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1488 PMD_INIT_LOG(INFO, 1489 "virtio: using mergeable buffer Rx path on port %u", 1490 eth_dev->data->port_id); 1491 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1492 } else { 1493 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1494 eth_dev->data->port_id); 1495 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1496 } 1497 } 1498 1499 } 1500 1501 /* Only support 1:1 queue/interrupt mapping so far. 1502 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1503 * interrupt vectors (<N+1). 1504 */ 1505 static int 1506 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1507 { 1508 uint32_t i; 1509 struct virtio_hw *hw = dev->data->dev_private; 1510 1511 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1512 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1513 dev->intr_handle->intr_vec[i] = i + 1; 1514 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1515 VIRTIO_MSI_NO_VECTOR) { 1516 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1517 return -EBUSY; 1518 } 1519 } 1520 1521 return 0; 1522 } 1523 1524 static void 1525 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1526 { 1527 uint32_t i; 1528 struct virtio_hw *hw = dev->data->dev_private; 1529 1530 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1531 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1532 VTPCI_OPS(hw)->set_queue_irq(hw, 1533 hw->vqs[i * VTNET_CQ], 1534 VIRTIO_MSI_NO_VECTOR); 1535 } 1536 1537 static int 1538 virtio_configure_intr(struct rte_eth_dev *dev) 1539 { 1540 struct virtio_hw *hw = dev->data->dev_private; 1541 1542 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1543 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1544 return -ENOTSUP; 1545 } 1546 1547 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1548 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1549 return -1; 1550 } 1551 1552 if (!dev->intr_handle->intr_vec) { 1553 dev->intr_handle->intr_vec = 1554 rte_zmalloc("intr_vec", 1555 hw->max_queue_pairs * sizeof(int), 0); 1556 if (!dev->intr_handle->intr_vec) { 1557 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1558 hw->max_queue_pairs); 1559 return -ENOMEM; 1560 } 1561 } 1562 1563 /* Re-register callback to update max_intr */ 1564 rte_intr_callback_unregister(dev->intr_handle, 1565 virtio_interrupt_handler, 1566 dev); 1567 rte_intr_callback_register(dev->intr_handle, 1568 virtio_interrupt_handler, 1569 dev); 1570 1571 /* DO NOT try to remove this! This function will enable msix, or QEMU 1572 * will encounter SIGSEGV when DRIVER_OK is sent. 1573 * And for legacy devices, this should be done before queue/vec binding 1574 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1575 * (22) will be ignored. 1576 */ 1577 if (virtio_intr_enable(dev) < 0) { 1578 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1579 return -1; 1580 } 1581 1582 if (virtio_queues_bind_intr(dev) < 0) { 1583 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1584 return -1; 1585 } 1586 1587 return 0; 1588 } 1589 1590 /* reset device and renegotiate features if needed */ 1591 static int 1592 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1593 { 1594 struct virtio_hw *hw = eth_dev->data->dev_private; 1595 struct virtio_net_config *config; 1596 struct virtio_net_config local_config; 1597 struct rte_pci_device *pci_dev = NULL; 1598 int ret; 1599 1600 /* Reset the device although not necessary at startup */ 1601 vtpci_reset(hw); 1602 1603 if (hw->vqs) { 1604 virtio_dev_free_mbufs(eth_dev); 1605 virtio_free_queues(hw); 1606 } 1607 1608 /* Tell the host we've noticed this device. */ 1609 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1610 1611 /* Tell the host we've known how to drive the device. */ 1612 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1613 if (virtio_negotiate_features(hw, req_features) < 0) 1614 return -1; 1615 1616 if (!hw->virtio_user_dev) { 1617 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1618 rte_eth_copy_pci_info(eth_dev, pci_dev); 1619 } 1620 1621 /* If host does not support both status and MSI-X then disable LSC */ 1622 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1623 hw->use_msix != VIRTIO_MSIX_NONE) 1624 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1625 else 1626 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1627 1628 /* Setting up rx_header size for the device */ 1629 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1630 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1631 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1632 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1633 else 1634 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1635 1636 /* Copy the permanent MAC address to: virtio_hw */ 1637 virtio_get_hwaddr(hw); 1638 ether_addr_copy((struct ether_addr *) hw->mac_addr, 1639 ð_dev->data->mac_addrs[0]); 1640 PMD_INIT_LOG(DEBUG, 1641 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1642 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1643 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1644 1645 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1646 config = &local_config; 1647 1648 vtpci_read_dev_config(hw, 1649 offsetof(struct virtio_net_config, mac), 1650 &config->mac, sizeof(config->mac)); 1651 1652 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1653 vtpci_read_dev_config(hw, 1654 offsetof(struct virtio_net_config, status), 1655 &config->status, sizeof(config->status)); 1656 } else { 1657 PMD_INIT_LOG(DEBUG, 1658 "VIRTIO_NET_F_STATUS is not supported"); 1659 config->status = 0; 1660 } 1661 1662 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1663 vtpci_read_dev_config(hw, 1664 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1665 &config->max_virtqueue_pairs, 1666 sizeof(config->max_virtqueue_pairs)); 1667 } else { 1668 PMD_INIT_LOG(DEBUG, 1669 "VIRTIO_NET_F_MQ is not supported"); 1670 config->max_virtqueue_pairs = 1; 1671 } 1672 1673 hw->max_queue_pairs = config->max_virtqueue_pairs; 1674 1675 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1676 vtpci_read_dev_config(hw, 1677 offsetof(struct virtio_net_config, mtu), 1678 &config->mtu, 1679 sizeof(config->mtu)); 1680 1681 /* 1682 * MTU value has already been checked at negotiation 1683 * time, but check again in case it has changed since 1684 * then, which should not happen. 1685 */ 1686 if (config->mtu < ETHER_MIN_MTU) { 1687 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1688 config->mtu); 1689 return -1; 1690 } 1691 1692 hw->max_mtu = config->mtu; 1693 /* Set initial MTU to maximum one supported by vhost */ 1694 eth_dev->data->mtu = config->mtu; 1695 1696 } else { 1697 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1698 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1699 } 1700 1701 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1702 config->max_virtqueue_pairs); 1703 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1704 PMD_INIT_LOG(DEBUG, 1705 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1706 config->mac[0], config->mac[1], 1707 config->mac[2], config->mac[3], 1708 config->mac[4], config->mac[5]); 1709 } else { 1710 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1711 hw->max_queue_pairs = 1; 1712 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1713 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1714 } 1715 1716 ret = virtio_alloc_queues(eth_dev); 1717 if (ret < 0) 1718 return ret; 1719 1720 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1721 if (virtio_configure_intr(eth_dev) < 0) { 1722 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1723 return -1; 1724 } 1725 } 1726 1727 vtpci_reinit_complete(hw); 1728 1729 if (pci_dev) 1730 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1731 eth_dev->data->port_id, pci_dev->id.vendor_id, 1732 pci_dev->id.device_id); 1733 1734 return 0; 1735 } 1736 1737 /* 1738 * Remap the PCI device again (IO port map for legacy device and 1739 * memory map for modern device), so that the secondary process 1740 * could have the PCI initiated correctly. 1741 */ 1742 static int 1743 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1744 { 1745 if (hw->modern) { 1746 /* 1747 * We don't have to re-parse the PCI config space, since 1748 * rte_pci_map_device() makes sure the mapped address 1749 * in secondary process would equal to the one mapped in 1750 * the primary process: error will be returned if that 1751 * requirement is not met. 1752 * 1753 * That said, we could simply reuse all cap pointers 1754 * (such as dev_cfg, common_cfg, etc.) parsed from the 1755 * primary process, which is stored in shared memory. 1756 */ 1757 if (rte_pci_map_device(pci_dev)) { 1758 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1759 return -1; 1760 } 1761 } else { 1762 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1763 return -1; 1764 } 1765 1766 return 0; 1767 } 1768 1769 static void 1770 virtio_set_vtpci_ops(struct virtio_hw *hw) 1771 { 1772 #ifdef RTE_VIRTIO_USER 1773 if (hw->virtio_user_dev) 1774 VTPCI_OPS(hw) = &virtio_user_ops; 1775 else 1776 #endif 1777 if (hw->modern) 1778 VTPCI_OPS(hw) = &modern_ops; 1779 else 1780 VTPCI_OPS(hw) = &legacy_ops; 1781 } 1782 1783 /* 1784 * This function is based on probe() function in virtio_pci.c 1785 * It returns 0 on success. 1786 */ 1787 int 1788 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1789 { 1790 struct virtio_hw *hw = eth_dev->data->dev_private; 1791 int ret; 1792 1793 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); 1794 1795 eth_dev->dev_ops = &virtio_eth_dev_ops; 1796 1797 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1798 if (!hw->virtio_user_dev) { 1799 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1800 if (ret) 1801 return ret; 1802 } 1803 1804 virtio_set_vtpci_ops(hw); 1805 set_rxtx_funcs(eth_dev); 1806 1807 return 0; 1808 } 1809 1810 /* Allocate memory for storing MAC addresses */ 1811 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0); 1812 if (eth_dev->data->mac_addrs == NULL) { 1813 PMD_INIT_LOG(ERR, 1814 "Failed to allocate %d bytes needed to store MAC addresses", 1815 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN); 1816 return -ENOMEM; 1817 } 1818 1819 hw->port_id = eth_dev->data->port_id; 1820 /* For virtio_user case the hw->virtio_user_dev is populated by 1821 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1822 */ 1823 if (!hw->virtio_user_dev) { 1824 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1825 if (ret) 1826 goto out; 1827 } 1828 1829 /* reset device and negotiate default features */ 1830 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1831 if (ret < 0) 1832 goto out; 1833 1834 return 0; 1835 1836 out: 1837 rte_free(eth_dev->data->mac_addrs); 1838 return ret; 1839 } 1840 1841 static int 1842 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1843 { 1844 PMD_INIT_FUNC_TRACE(); 1845 1846 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1847 return 0; 1848 1849 virtio_dev_stop(eth_dev); 1850 virtio_dev_close(eth_dev); 1851 1852 eth_dev->dev_ops = NULL; 1853 eth_dev->tx_pkt_burst = NULL; 1854 eth_dev->rx_pkt_burst = NULL; 1855 1856 if (eth_dev->device) 1857 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1858 1859 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 1860 1861 return 0; 1862 } 1863 1864 static int vdpa_check_handler(__rte_unused const char *key, 1865 const char *value, __rte_unused void *opaque) 1866 { 1867 if (strcmp(value, "1")) 1868 return -1; 1869 1870 return 0; 1871 } 1872 1873 static int 1874 vdpa_mode_selected(struct rte_devargs *devargs) 1875 { 1876 struct rte_kvargs *kvlist; 1877 const char *key = "vdpa"; 1878 int ret = 0; 1879 1880 if (devargs == NULL) 1881 return 0; 1882 1883 kvlist = rte_kvargs_parse(devargs->args, NULL); 1884 if (kvlist == NULL) 1885 return 0; 1886 1887 if (!rte_kvargs_count(kvlist, key)) 1888 goto exit; 1889 1890 /* vdpa mode selected when there's a key-value pair: vdpa=1 */ 1891 if (rte_kvargs_process(kvlist, key, 1892 vdpa_check_handler, NULL) < 0) { 1893 goto exit; 1894 } 1895 ret = 1; 1896 1897 exit: 1898 rte_kvargs_free(kvlist); 1899 return ret; 1900 } 1901 1902 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1903 struct rte_pci_device *pci_dev) 1904 { 1905 if (rte_eal_iopl_init() != 0) { 1906 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); 1907 return 1; 1908 } 1909 1910 /* virtio pmd skips probe if device needs to work in vdpa mode */ 1911 if (vdpa_mode_selected(pci_dev->device.devargs)) 1912 return 1; 1913 1914 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 1915 eth_virtio_dev_init); 1916 } 1917 1918 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 1919 { 1920 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 1921 } 1922 1923 static struct rte_pci_driver rte_virtio_pmd = { 1924 .driver = { 1925 .name = "net_virtio", 1926 }, 1927 .id_table = pci_id_virtio_map, 1928 .drv_flags = 0, 1929 .probe = eth_virtio_pci_probe, 1930 .remove = eth_virtio_pci_remove, 1931 }; 1932 1933 RTE_INIT(rte_virtio_pmd_init) 1934 { 1935 rte_eal_iopl_init(); 1936 rte_pci_register(&rte_virtio_pmd); 1937 } 1938 1939 static bool 1940 rx_offload_enabled(struct virtio_hw *hw) 1941 { 1942 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 1943 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 1944 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 1945 } 1946 1947 static bool 1948 tx_offload_enabled(struct virtio_hw *hw) 1949 { 1950 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 1951 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 1952 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 1953 } 1954 1955 /* 1956 * Configure virtio device 1957 * It returns 0 on success. 1958 */ 1959 static int 1960 virtio_dev_configure(struct rte_eth_dev *dev) 1961 { 1962 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 1963 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 1964 struct virtio_hw *hw = dev->data->dev_private; 1965 uint64_t rx_offloads = rxmode->offloads; 1966 uint64_t tx_offloads = txmode->offloads; 1967 uint64_t req_features; 1968 int ret; 1969 1970 PMD_INIT_LOG(DEBUG, "configure"); 1971 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 1972 1973 if (dev->data->dev_conf.intr_conf.rxq) { 1974 ret = virtio_init_device(dev, hw->req_guest_features); 1975 if (ret < 0) 1976 return ret; 1977 } 1978 1979 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 1980 DEV_RX_OFFLOAD_TCP_CKSUM)) 1981 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 1982 1983 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 1984 req_features |= 1985 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 1986 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 1987 1988 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 1989 DEV_TX_OFFLOAD_TCP_CKSUM)) 1990 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 1991 1992 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 1993 req_features |= 1994 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 1995 (1ULL << VIRTIO_NET_F_HOST_TSO6); 1996 1997 /* if request features changed, reinit the device */ 1998 if (req_features != hw->req_guest_features) { 1999 ret = virtio_init_device(dev, req_features); 2000 if (ret < 0) 2001 return ret; 2002 } 2003 2004 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2005 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2006 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2007 PMD_DRV_LOG(ERR, 2008 "rx checksum not available on this host"); 2009 return -ENOTSUP; 2010 } 2011 2012 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2013 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2014 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2015 PMD_DRV_LOG(ERR, 2016 "Large Receive Offload not available on this host"); 2017 return -ENOTSUP; 2018 } 2019 2020 /* start control queue */ 2021 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2022 virtio_dev_cq_start(dev); 2023 2024 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2025 hw->vlan_strip = 1; 2026 2027 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2028 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2029 PMD_DRV_LOG(ERR, 2030 "vlan filtering not available on this host"); 2031 return -ENOTSUP; 2032 } 2033 2034 hw->has_tx_offload = tx_offload_enabled(hw); 2035 hw->has_rx_offload = rx_offload_enabled(hw); 2036 2037 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2038 /* Enable vector (0) for Link State Intrerrupt */ 2039 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2040 VIRTIO_MSI_NO_VECTOR) { 2041 PMD_DRV_LOG(ERR, "failed to set config vector"); 2042 return -EBUSY; 2043 } 2044 2045 rte_spinlock_init(&hw->state_lock); 2046 2047 hw->use_simple_rx = 1; 2048 2049 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2050 hw->use_inorder_tx = 1; 2051 hw->use_inorder_rx = 1; 2052 hw->use_simple_rx = 0; 2053 } 2054 2055 if (vtpci_packed_queue(hw)) { 2056 hw->use_simple_rx = 0; 2057 hw->use_inorder_rx = 0; 2058 hw->use_inorder_tx = 0; 2059 } 2060 2061 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2062 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2063 hw->use_simple_rx = 0; 2064 } 2065 #endif 2066 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2067 hw->use_simple_rx = 0; 2068 } 2069 2070 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2071 DEV_RX_OFFLOAD_TCP_CKSUM | 2072 DEV_RX_OFFLOAD_TCP_LRO | 2073 DEV_RX_OFFLOAD_VLAN_STRIP)) 2074 hw->use_simple_rx = 0; 2075 2076 hw->opened = true; 2077 2078 return 0; 2079 } 2080 2081 2082 static int 2083 virtio_dev_start(struct rte_eth_dev *dev) 2084 { 2085 uint16_t nb_queues, i; 2086 struct virtnet_rx *rxvq; 2087 struct virtnet_tx *txvq __rte_unused; 2088 struct virtio_hw *hw = dev->data->dev_private; 2089 int ret; 2090 2091 /* Finish the initialization of the queues */ 2092 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2093 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2094 if (ret < 0) 2095 return ret; 2096 } 2097 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2098 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2099 if (ret < 0) 2100 return ret; 2101 } 2102 2103 /* check if lsc interrupt feature is enabled */ 2104 if (dev->data->dev_conf.intr_conf.lsc) { 2105 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2106 PMD_DRV_LOG(ERR, "link status not supported by host"); 2107 return -ENOTSUP; 2108 } 2109 } 2110 2111 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2112 * in device configure, but it could be unmapped when device is 2113 * stopped. 2114 */ 2115 if (dev->data->dev_conf.intr_conf.lsc || 2116 dev->data->dev_conf.intr_conf.rxq) { 2117 virtio_intr_disable(dev); 2118 2119 /* Setup interrupt callback */ 2120 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2121 rte_intr_callback_register(dev->intr_handle, 2122 virtio_interrupt_handler, 2123 dev); 2124 2125 if (virtio_intr_enable(dev) < 0) { 2126 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2127 return -EIO; 2128 } 2129 } 2130 2131 /*Notify the backend 2132 *Otherwise the tap backend might already stop its queue due to fullness. 2133 *vhost backend will have no chance to be waked up 2134 */ 2135 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2136 if (hw->max_queue_pairs > 1) { 2137 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2138 return -EINVAL; 2139 } 2140 2141 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2142 2143 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2144 rxvq = dev->data->rx_queues[i]; 2145 /* Flush the old packets */ 2146 virtqueue_rxvq_flush(rxvq->vq); 2147 virtqueue_notify(rxvq->vq); 2148 } 2149 2150 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2151 txvq = dev->data->tx_queues[i]; 2152 virtqueue_notify(txvq->vq); 2153 } 2154 2155 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2156 2157 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2158 rxvq = dev->data->rx_queues[i]; 2159 VIRTQUEUE_DUMP(rxvq->vq); 2160 } 2161 2162 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2163 txvq = dev->data->tx_queues[i]; 2164 VIRTQUEUE_DUMP(txvq->vq); 2165 } 2166 2167 set_rxtx_funcs(dev); 2168 hw->started = true; 2169 2170 /* Initialize Link state */ 2171 virtio_dev_link_update(dev, 0); 2172 2173 return 0; 2174 } 2175 2176 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2177 { 2178 struct virtio_hw *hw = dev->data->dev_private; 2179 uint16_t nr_vq = virtio_get_nr_vq(hw); 2180 const char *type __rte_unused; 2181 unsigned int i, mbuf_num = 0; 2182 struct virtqueue *vq; 2183 struct rte_mbuf *buf; 2184 int queue_type; 2185 2186 if (hw->vqs == NULL) 2187 return; 2188 2189 for (i = 0; i < nr_vq; i++) { 2190 vq = hw->vqs[i]; 2191 if (!vq) 2192 continue; 2193 2194 queue_type = virtio_get_queue_type(hw, i); 2195 if (queue_type == VTNET_RQ) 2196 type = "rxq"; 2197 else if (queue_type == VTNET_TQ) 2198 type = "txq"; 2199 else 2200 continue; 2201 2202 PMD_INIT_LOG(DEBUG, 2203 "Before freeing %s[%d] used and unused buf", 2204 type, i); 2205 VIRTQUEUE_DUMP(vq); 2206 2207 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2208 rte_pktmbuf_free(buf); 2209 mbuf_num++; 2210 } 2211 2212 PMD_INIT_LOG(DEBUG, 2213 "After freeing %s[%d] used and unused buf", 2214 type, i); 2215 VIRTQUEUE_DUMP(vq); 2216 } 2217 2218 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2219 } 2220 2221 /* 2222 * Stop device: disable interrupt and mark link down 2223 */ 2224 static void 2225 virtio_dev_stop(struct rte_eth_dev *dev) 2226 { 2227 struct virtio_hw *hw = dev->data->dev_private; 2228 struct rte_eth_link link; 2229 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2230 2231 PMD_INIT_LOG(DEBUG, "stop"); 2232 2233 rte_spinlock_lock(&hw->state_lock); 2234 if (!hw->started) 2235 goto out_unlock; 2236 hw->started = false; 2237 2238 if (intr_conf->lsc || intr_conf->rxq) { 2239 virtio_intr_disable(dev); 2240 2241 /* Reset interrupt callback */ 2242 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2243 rte_intr_callback_unregister(dev->intr_handle, 2244 virtio_interrupt_handler, 2245 dev); 2246 } 2247 } 2248 2249 memset(&link, 0, sizeof(link)); 2250 rte_eth_linkstatus_set(dev, &link); 2251 out_unlock: 2252 rte_spinlock_unlock(&hw->state_lock); 2253 } 2254 2255 static int 2256 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2257 { 2258 struct rte_eth_link link; 2259 uint16_t status; 2260 struct virtio_hw *hw = dev->data->dev_private; 2261 2262 memset(&link, 0, sizeof(link)); 2263 link.link_duplex = ETH_LINK_FULL_DUPLEX; 2264 link.link_speed = ETH_SPEED_NUM_10G; 2265 link.link_autoneg = ETH_LINK_FIXED; 2266 2267 if (!hw->started) { 2268 link.link_status = ETH_LINK_DOWN; 2269 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2270 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2271 vtpci_read_dev_config(hw, 2272 offsetof(struct virtio_net_config, status), 2273 &status, sizeof(status)); 2274 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2275 link.link_status = ETH_LINK_DOWN; 2276 PMD_INIT_LOG(DEBUG, "Port %d is down", 2277 dev->data->port_id); 2278 } else { 2279 link.link_status = ETH_LINK_UP; 2280 PMD_INIT_LOG(DEBUG, "Port %d is up", 2281 dev->data->port_id); 2282 } 2283 } else { 2284 link.link_status = ETH_LINK_UP; 2285 } 2286 2287 return rte_eth_linkstatus_set(dev, &link); 2288 } 2289 2290 static int 2291 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2292 { 2293 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2294 struct virtio_hw *hw = dev->data->dev_private; 2295 uint64_t offloads = rxmode->offloads; 2296 2297 if (mask & ETH_VLAN_FILTER_MASK) { 2298 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2299 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2300 2301 PMD_DRV_LOG(NOTICE, 2302 "vlan filtering not available on this host"); 2303 2304 return -ENOTSUP; 2305 } 2306 } 2307 2308 if (mask & ETH_VLAN_STRIP_MASK) 2309 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2310 2311 return 0; 2312 } 2313 2314 static void 2315 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2316 { 2317 uint64_t tso_mask, host_features; 2318 struct virtio_hw *hw = dev->data->dev_private; 2319 2320 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ 2321 2322 dev_info->max_rx_queues = 2323 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2324 dev_info->max_tx_queues = 2325 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2326 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2327 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2328 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2329 2330 host_features = VTPCI_OPS(hw)->get_features(hw); 2331 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2332 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2333 dev_info->rx_offload_capa |= 2334 DEV_RX_OFFLOAD_TCP_CKSUM | 2335 DEV_RX_OFFLOAD_UDP_CKSUM; 2336 } 2337 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2338 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2339 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2340 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2341 if ((host_features & tso_mask) == tso_mask) 2342 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2343 2344 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2345 DEV_TX_OFFLOAD_VLAN_INSERT; 2346 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2347 dev_info->tx_offload_capa |= 2348 DEV_TX_OFFLOAD_UDP_CKSUM | 2349 DEV_TX_OFFLOAD_TCP_CKSUM; 2350 } 2351 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2352 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2353 if ((host_features & tso_mask) == tso_mask) 2354 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2355 } 2356 2357 /* 2358 * It enables testpmd to collect per queue stats. 2359 */ 2360 static int 2361 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2362 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2363 __rte_unused uint8_t is_rx) 2364 { 2365 return 0; 2366 } 2367 2368 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2369 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2370 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2371 2372 RTE_INIT(virtio_init_log) 2373 { 2374 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2375 if (virtio_logtype_init >= 0) 2376 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2377 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2378 if (virtio_logtype_driver >= 0) 2379 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2380 } 2381