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 bool avail_wrap_counter, used_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 avail_wrap_counter = vq->avail_wrap_counter; 165 used_wrap_counter = vq->used_wrap_counter; 166 desc[head].flags = VRING_DESC_F_NEXT; 167 desc[head].addr = cvq->virtio_net_hdr_mem; 168 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 169 vq->vq_free_cnt--; 170 if (++vq->vq_avail_idx >= vq->vq_nentries) { 171 vq->vq_avail_idx -= vq->vq_nentries; 172 vq->avail_wrap_counter ^= 1; 173 } 174 175 for (k = 0; k < pkt_num; k++) { 176 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 177 + sizeof(struct virtio_net_ctrl_hdr) 178 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 179 desc[vq->vq_avail_idx].len = dlen[k]; 180 flags = VRING_DESC_F_NEXT; 181 sum += dlen[k]; 182 vq->vq_free_cnt--; 183 flags |= VRING_DESC_F_AVAIL(vq->avail_wrap_counter) | 184 VRING_DESC_F_USED(!vq->avail_wrap_counter); 185 desc[vq->vq_avail_idx].flags = flags; 186 rte_smp_wmb(); 187 vq->vq_free_cnt--; 188 if (++vq->vq_avail_idx >= vq->vq_nentries) { 189 vq->vq_avail_idx -= vq->vq_nentries; 190 vq->avail_wrap_counter ^= 1; 191 } 192 } 193 194 195 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 196 + sizeof(struct virtio_net_ctrl_hdr); 197 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 198 flags = VRING_DESC_F_WRITE; 199 flags |= VRING_DESC_F_AVAIL(vq->avail_wrap_counter) | 200 VRING_DESC_F_USED(!vq->avail_wrap_counter); 201 desc[vq->vq_avail_idx].flags = flags; 202 flags = VRING_DESC_F_NEXT; 203 flags |= VRING_DESC_F_AVAIL(avail_wrap_counter) | 204 VRING_DESC_F_USED(!avail_wrap_counter); 205 desc[head].flags = flags; 206 rte_smp_wmb(); 207 208 vq->vq_free_cnt--; 209 if (++vq->vq_avail_idx >= vq->vq_nentries) { 210 vq->vq_avail_idx -= vq->vq_nentries; 211 vq->avail_wrap_counter ^= 1; 212 } 213 214 virtqueue_notify(vq); 215 216 /* wait for used descriptors in virtqueue */ 217 do { 218 rte_rmb(); 219 usleep(100); 220 } while (!__desc_is_used(&desc[head], used_wrap_counter)); 221 222 /* now get used descriptors */ 223 while (desc_is_used(&desc[vq->vq_used_cons_idx], vq)) { 224 vq->vq_free_cnt++; 225 if (++vq->vq_used_cons_idx >= vq->vq_nentries) { 226 vq->vq_used_cons_idx -= vq->vq_nentries; 227 vq->used_wrap_counter ^= 1; 228 } 229 } 230 231 result = cvq->virtio_net_hdr_mz->addr; 232 return result; 233 } 234 235 static int 236 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 237 int *dlen, int pkt_num) 238 { 239 uint32_t head, i; 240 int k, sum = 0; 241 virtio_net_ctrl_ack status = ~0; 242 struct virtio_pmd_ctrl *result; 243 struct virtqueue *vq; 244 245 ctrl->status = status; 246 247 if (!cvq || !cvq->vq) { 248 PMD_INIT_LOG(ERR, "Control queue is not supported."); 249 return -1; 250 } 251 252 rte_spinlock_lock(&cvq->lock); 253 vq = cvq->vq; 254 head = vq->vq_desc_head_idx; 255 256 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 257 "vq->hw->cvq = %p vq = %p", 258 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 259 260 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 261 rte_spinlock_unlock(&cvq->lock); 262 return -1; 263 } 264 265 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 266 sizeof(struct virtio_pmd_ctrl)); 267 268 if (vtpci_packed_queue(vq->hw)) { 269 result = virtio_pq_send_command(cvq, ctrl, dlen, pkt_num); 270 goto out_unlock; 271 } 272 273 /* 274 * Format is enforced in qemu code: 275 * One TX packet for header; 276 * At least one TX packet per argument; 277 * One RX packet for ACK. 278 */ 279 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT; 280 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem; 281 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 282 vq->vq_free_cnt--; 283 i = vq->vq_ring.desc[head].next; 284 285 for (k = 0; k < pkt_num; k++) { 286 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT; 287 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem 288 + sizeof(struct virtio_net_ctrl_hdr) 289 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 290 vq->vq_ring.desc[i].len = dlen[k]; 291 sum += dlen[k]; 292 vq->vq_free_cnt--; 293 i = vq->vq_ring.desc[i].next; 294 } 295 296 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE; 297 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem 298 + sizeof(struct virtio_net_ctrl_hdr); 299 vq->vq_ring.desc[i].len = sizeof(ctrl->status); 300 vq->vq_free_cnt--; 301 302 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next; 303 304 vq_update_avail_ring(vq, head); 305 vq_update_avail_idx(vq); 306 307 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 308 309 virtqueue_notify(vq); 310 311 rte_rmb(); 312 while (VIRTQUEUE_NUSED(vq) == 0) { 313 rte_rmb(); 314 usleep(100); 315 } 316 317 while (VIRTQUEUE_NUSED(vq)) { 318 uint32_t idx, desc_idx, used_idx; 319 struct vring_used_elem *uep; 320 321 used_idx = (uint32_t)(vq->vq_used_cons_idx 322 & (vq->vq_nentries - 1)); 323 uep = &vq->vq_ring.used->ring[used_idx]; 324 idx = (uint32_t) uep->id; 325 desc_idx = idx; 326 327 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) { 328 desc_idx = vq->vq_ring.desc[desc_idx].next; 329 vq->vq_free_cnt++; 330 } 331 332 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx; 333 vq->vq_desc_head_idx = idx; 334 335 vq->vq_used_cons_idx++; 336 vq->vq_free_cnt++; 337 } 338 339 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 340 vq->vq_free_cnt, vq->vq_desc_head_idx); 341 342 result = cvq->virtio_net_hdr_mz->addr; 343 344 out_unlock: 345 rte_spinlock_unlock(&cvq->lock); 346 return result->status; 347 } 348 349 static int 350 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 351 { 352 struct virtio_hw *hw = dev->data->dev_private; 353 struct virtio_pmd_ctrl ctrl; 354 int dlen[1]; 355 int ret; 356 357 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 358 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 359 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 360 361 dlen[0] = sizeof(uint16_t); 362 363 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 364 if (ret) { 365 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 366 "failed, this is too late now..."); 367 return -EINVAL; 368 } 369 370 return 0; 371 } 372 373 static void 374 virtio_dev_queue_release(void *queue __rte_unused) 375 { 376 /* do nothing */ 377 } 378 379 static uint16_t 380 virtio_get_nr_vq(struct virtio_hw *hw) 381 { 382 uint16_t nr_vq = hw->max_queue_pairs * 2; 383 384 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 385 nr_vq += 1; 386 387 return nr_vq; 388 } 389 390 static void 391 virtio_init_vring(struct virtqueue *vq) 392 { 393 int size = vq->vq_nentries; 394 struct vring *vr = &vq->vq_ring; 395 uint8_t *ring_mem = vq->vq_ring_virt_mem; 396 397 PMD_INIT_FUNC_TRACE(); 398 399 memset(ring_mem, 0, vq->vq_ring_size); 400 401 vq->vq_used_cons_idx = 0; 402 vq->vq_desc_head_idx = 0; 403 vq->vq_avail_idx = 0; 404 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 405 vq->vq_free_cnt = vq->vq_nentries; 406 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 407 if (vtpci_packed_queue(vq->hw)) { 408 vring_init_packed(&vq->ring_packed, ring_mem, 409 VIRTIO_PCI_VRING_ALIGN, size); 410 vring_desc_init_packed(vq, size); 411 } else { 412 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size); 413 vring_desc_init_split(vr->desc, size); 414 } 415 /* 416 * Disable device(host) interrupting guest 417 */ 418 virtqueue_disable_intr(vq); 419 } 420 421 static int 422 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) 423 { 424 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 425 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 426 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 427 unsigned int vq_size, size; 428 struct virtio_hw *hw = dev->data->dev_private; 429 struct virtnet_rx *rxvq = NULL; 430 struct virtnet_tx *txvq = NULL; 431 struct virtnet_ctl *cvq = NULL; 432 struct virtqueue *vq; 433 size_t sz_hdr_mz = 0; 434 void *sw_ring = NULL; 435 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx); 436 int ret; 437 int numa_node = dev->device->numa_node; 438 439 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 440 vtpci_queue_idx, numa_node); 441 442 /* 443 * Read the virtqueue size from the Queue Size field 444 * Always power of 2 and if 0 virtqueue does not exist 445 */ 446 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx); 447 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 448 if (vq_size == 0) { 449 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 450 return -EINVAL; 451 } 452 453 if (!rte_is_power_of_2(vq_size)) { 454 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2"); 455 return -EINVAL; 456 } 457 458 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 459 dev->data->port_id, vtpci_queue_idx); 460 461 size = RTE_ALIGN_CEIL(sizeof(*vq) + 462 vq_size * sizeof(struct vq_desc_extra), 463 RTE_CACHE_LINE_SIZE); 464 if (queue_type == VTNET_TQ) { 465 /* 466 * For each xmit packet, allocate a virtio_net_hdr 467 * and indirect ring elements 468 */ 469 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 470 } else if (queue_type == VTNET_CQ) { 471 /* Allocate a page for control vq command, data and status */ 472 sz_hdr_mz = PAGE_SIZE; 473 } 474 475 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 476 numa_node); 477 if (vq == NULL) { 478 PMD_INIT_LOG(ERR, "can not allocate vq"); 479 return -ENOMEM; 480 } 481 hw->vqs[vtpci_queue_idx] = vq; 482 483 vq->hw = hw; 484 vq->vq_queue_index = vtpci_queue_idx; 485 vq->vq_nentries = vq_size; 486 vq->event_flags_shadow = 0; 487 if (vtpci_packed_queue(hw)) { 488 vq->avail_wrap_counter = 1; 489 vq->used_wrap_counter = 1; 490 vq->avail_used_flags = 491 VRING_DESC_F_AVAIL(vq->avail_wrap_counter) | 492 VRING_DESC_F_USED(!vq->avail_wrap_counter); 493 } 494 495 /* 496 * Reserve a memzone for vring elements 497 */ 498 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN); 499 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN); 500 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 501 size, vq->vq_ring_size); 502 503 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 504 numa_node, RTE_MEMZONE_IOVA_CONTIG, 505 VIRTIO_PCI_VRING_ALIGN); 506 if (mz == NULL) { 507 if (rte_errno == EEXIST) 508 mz = rte_memzone_lookup(vq_name); 509 if (mz == NULL) { 510 ret = -ENOMEM; 511 goto fail_q_alloc; 512 } 513 } 514 515 memset(mz->addr, 0, mz->len); 516 517 vq->vq_ring_mem = mz->iova; 518 vq->vq_ring_virt_mem = mz->addr; 519 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 520 (uint64_t)mz->iova); 521 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 522 (uint64_t)(uintptr_t)mz->addr); 523 524 virtio_init_vring(vq); 525 526 if (sz_hdr_mz) { 527 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 528 dev->data->port_id, vtpci_queue_idx); 529 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 530 numa_node, RTE_MEMZONE_IOVA_CONTIG, 531 RTE_CACHE_LINE_SIZE); 532 if (hdr_mz == NULL) { 533 if (rte_errno == EEXIST) 534 hdr_mz = rte_memzone_lookup(vq_hdr_name); 535 if (hdr_mz == NULL) { 536 ret = -ENOMEM; 537 goto fail_q_alloc; 538 } 539 } 540 } 541 542 if (queue_type == VTNET_RQ) { 543 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 544 sizeof(vq->sw_ring[0]); 545 546 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 547 RTE_CACHE_LINE_SIZE, numa_node); 548 if (!sw_ring) { 549 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 550 ret = -ENOMEM; 551 goto fail_q_alloc; 552 } 553 554 vq->sw_ring = sw_ring; 555 rxvq = &vq->rxq; 556 rxvq->vq = vq; 557 rxvq->port_id = dev->data->port_id; 558 rxvq->mz = mz; 559 } else if (queue_type == VTNET_TQ) { 560 txvq = &vq->txq; 561 txvq->vq = vq; 562 txvq->port_id = dev->data->port_id; 563 txvq->mz = mz; 564 txvq->virtio_net_hdr_mz = hdr_mz; 565 txvq->virtio_net_hdr_mem = hdr_mz->iova; 566 } else if (queue_type == VTNET_CQ) { 567 cvq = &vq->cq; 568 cvq->vq = vq; 569 cvq->mz = mz; 570 cvq->virtio_net_hdr_mz = hdr_mz; 571 cvq->virtio_net_hdr_mem = hdr_mz->iova; 572 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE); 573 574 hw->cvq = cvq; 575 } 576 577 /* For virtio_user case (that is when hw->dev is NULL), we use 578 * virtual address. And we need properly set _offset_, please see 579 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information. 580 */ 581 if (!hw->virtio_user_dev) 582 vq->offset = offsetof(struct rte_mbuf, buf_iova); 583 else { 584 vq->vq_ring_mem = (uintptr_t)mz->addr; 585 vq->offset = offsetof(struct rte_mbuf, buf_addr); 586 if (queue_type == VTNET_TQ) 587 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 588 else if (queue_type == VTNET_CQ) 589 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 590 } 591 592 if (queue_type == VTNET_TQ) { 593 struct virtio_tx_region *txr; 594 unsigned int i; 595 596 txr = hdr_mz->addr; 597 memset(txr, 0, vq_size * sizeof(*txr)); 598 for (i = 0; i < vq_size; i++) { 599 struct vring_desc *start_dp = txr[i].tx_indir; 600 struct vring_packed_desc *start_dp_packed = 601 txr[i].tx_indir_pq; 602 603 /* first indirect descriptor is always the tx header */ 604 if (vtpci_packed_queue(hw)) { 605 start_dp_packed->addr = txvq->virtio_net_hdr_mem 606 + i * sizeof(*txr) 607 + offsetof(struct virtio_tx_region, 608 tx_hdr); 609 start_dp_packed->len = hw->vtnet_hdr_size; 610 } else { 611 vring_desc_init_split(start_dp, 612 RTE_DIM(txr[i].tx_indir)); 613 start_dp->addr = txvq->virtio_net_hdr_mem 614 + i * sizeof(*txr) 615 + offsetof(struct virtio_tx_region, 616 tx_hdr); 617 start_dp->len = hw->vtnet_hdr_size; 618 start_dp->flags = VRING_DESC_F_NEXT; 619 } 620 } 621 } 622 623 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) { 624 PMD_INIT_LOG(ERR, "setup_queue failed"); 625 return -EINVAL; 626 } 627 628 return 0; 629 630 fail_q_alloc: 631 rte_free(sw_ring); 632 rte_memzone_free(hdr_mz); 633 rte_memzone_free(mz); 634 rte_free(vq); 635 636 return ret; 637 } 638 639 static void 640 virtio_free_queues(struct virtio_hw *hw) 641 { 642 uint16_t nr_vq = virtio_get_nr_vq(hw); 643 struct virtqueue *vq; 644 int queue_type; 645 uint16_t i; 646 647 if (hw->vqs == NULL) 648 return; 649 650 for (i = 0; i < nr_vq; i++) { 651 vq = hw->vqs[i]; 652 if (!vq) 653 continue; 654 655 queue_type = virtio_get_queue_type(hw, i); 656 if (queue_type == VTNET_RQ) { 657 rte_free(vq->sw_ring); 658 rte_memzone_free(vq->rxq.mz); 659 } else if (queue_type == VTNET_TQ) { 660 rte_memzone_free(vq->txq.mz); 661 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 662 } else { 663 rte_memzone_free(vq->cq.mz); 664 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 665 } 666 667 rte_free(vq); 668 hw->vqs[i] = NULL; 669 } 670 671 rte_free(hw->vqs); 672 hw->vqs = NULL; 673 } 674 675 static int 676 virtio_alloc_queues(struct rte_eth_dev *dev) 677 { 678 struct virtio_hw *hw = dev->data->dev_private; 679 uint16_t nr_vq = virtio_get_nr_vq(hw); 680 uint16_t i; 681 int ret; 682 683 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 684 if (!hw->vqs) { 685 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 686 return -ENOMEM; 687 } 688 689 for (i = 0; i < nr_vq; i++) { 690 ret = virtio_init_queue(dev, i); 691 if (ret < 0) { 692 virtio_free_queues(hw); 693 return ret; 694 } 695 } 696 697 return 0; 698 } 699 700 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 701 702 static void 703 virtio_dev_close(struct rte_eth_dev *dev) 704 { 705 struct virtio_hw *hw = dev->data->dev_private; 706 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 707 708 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 709 710 if (!hw->opened) 711 return; 712 hw->opened = false; 713 714 /* reset the NIC */ 715 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 716 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 717 if (intr_conf->rxq) 718 virtio_queues_unbind_intr(dev); 719 720 if (intr_conf->lsc || intr_conf->rxq) { 721 virtio_intr_disable(dev); 722 rte_intr_efd_disable(dev->intr_handle); 723 rte_free(dev->intr_handle->intr_vec); 724 dev->intr_handle->intr_vec = NULL; 725 } 726 727 vtpci_reset(hw); 728 virtio_dev_free_mbufs(dev); 729 virtio_free_queues(hw); 730 } 731 732 static void 733 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 734 { 735 struct virtio_hw *hw = dev->data->dev_private; 736 struct virtio_pmd_ctrl ctrl; 737 int dlen[1]; 738 int ret; 739 740 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 741 PMD_INIT_LOG(INFO, "host does not support rx control"); 742 return; 743 } 744 745 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 746 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 747 ctrl.data[0] = 1; 748 dlen[0] = 1; 749 750 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 751 if (ret) 752 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 753 } 754 755 static void 756 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 757 { 758 struct virtio_hw *hw = dev->data->dev_private; 759 struct virtio_pmd_ctrl ctrl; 760 int dlen[1]; 761 int ret; 762 763 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 764 PMD_INIT_LOG(INFO, "host does not support rx control"); 765 return; 766 } 767 768 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 769 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 770 ctrl.data[0] = 0; 771 dlen[0] = 1; 772 773 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 774 if (ret) 775 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 776 } 777 778 static void 779 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 780 { 781 struct virtio_hw *hw = dev->data->dev_private; 782 struct virtio_pmd_ctrl ctrl; 783 int dlen[1]; 784 int ret; 785 786 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 787 PMD_INIT_LOG(INFO, "host does not support rx control"); 788 return; 789 } 790 791 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 792 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 793 ctrl.data[0] = 1; 794 dlen[0] = 1; 795 796 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 797 if (ret) 798 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 799 } 800 801 static void 802 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 803 { 804 struct virtio_hw *hw = dev->data->dev_private; 805 struct virtio_pmd_ctrl ctrl; 806 int dlen[1]; 807 int ret; 808 809 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 810 PMD_INIT_LOG(INFO, "host does not support rx control"); 811 return; 812 } 813 814 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 815 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 816 ctrl.data[0] = 0; 817 dlen[0] = 1; 818 819 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 820 if (ret) 821 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 822 } 823 824 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 825 static int 826 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 827 { 828 struct virtio_hw *hw = dev->data->dev_private; 829 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + 830 hw->vtnet_hdr_size; 831 uint32_t frame_size = mtu + ether_hdr_len; 832 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 833 834 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 835 836 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) { 837 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 838 ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 839 return -EINVAL; 840 } 841 return 0; 842 } 843 844 static int 845 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 846 { 847 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 848 struct virtqueue *vq = rxvq->vq; 849 850 virtqueue_enable_intr(vq); 851 return 0; 852 } 853 854 static int 855 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 856 { 857 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 858 struct virtqueue *vq = rxvq->vq; 859 860 virtqueue_disable_intr(vq); 861 return 0; 862 } 863 864 /* 865 * dev_ops for virtio, bare necessities for basic operation 866 */ 867 static const struct eth_dev_ops virtio_eth_dev_ops = { 868 .dev_configure = virtio_dev_configure, 869 .dev_start = virtio_dev_start, 870 .dev_stop = virtio_dev_stop, 871 .dev_close = virtio_dev_close, 872 .promiscuous_enable = virtio_dev_promiscuous_enable, 873 .promiscuous_disable = virtio_dev_promiscuous_disable, 874 .allmulticast_enable = virtio_dev_allmulticast_enable, 875 .allmulticast_disable = virtio_dev_allmulticast_disable, 876 .mtu_set = virtio_mtu_set, 877 .dev_infos_get = virtio_dev_info_get, 878 .stats_get = virtio_dev_stats_get, 879 .xstats_get = virtio_dev_xstats_get, 880 .xstats_get_names = virtio_dev_xstats_get_names, 881 .stats_reset = virtio_dev_stats_reset, 882 .xstats_reset = virtio_dev_stats_reset, 883 .link_update = virtio_dev_link_update, 884 .vlan_offload_set = virtio_dev_vlan_offload_set, 885 .rx_queue_setup = virtio_dev_rx_queue_setup, 886 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 887 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 888 .rx_queue_release = virtio_dev_queue_release, 889 .rx_descriptor_done = virtio_dev_rx_queue_done, 890 .tx_queue_setup = virtio_dev_tx_queue_setup, 891 .tx_queue_release = virtio_dev_queue_release, 892 /* collect stats per queue */ 893 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 894 .vlan_filter_set = virtio_vlan_filter_set, 895 .mac_addr_add = virtio_mac_addr_add, 896 .mac_addr_remove = virtio_mac_addr_remove, 897 .mac_addr_set = virtio_mac_addr_set, 898 }; 899 900 static void 901 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 902 { 903 unsigned i; 904 905 for (i = 0; i < dev->data->nb_tx_queues; i++) { 906 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 907 if (txvq == NULL) 908 continue; 909 910 stats->opackets += txvq->stats.packets; 911 stats->obytes += txvq->stats.bytes; 912 stats->oerrors += txvq->stats.errors; 913 914 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 915 stats->q_opackets[i] = txvq->stats.packets; 916 stats->q_obytes[i] = txvq->stats.bytes; 917 } 918 } 919 920 for (i = 0; i < dev->data->nb_rx_queues; i++) { 921 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 922 if (rxvq == NULL) 923 continue; 924 925 stats->ipackets += rxvq->stats.packets; 926 stats->ibytes += rxvq->stats.bytes; 927 stats->ierrors += rxvq->stats.errors; 928 929 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 930 stats->q_ipackets[i] = rxvq->stats.packets; 931 stats->q_ibytes[i] = rxvq->stats.bytes; 932 } 933 } 934 935 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 936 } 937 938 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 939 struct rte_eth_xstat_name *xstats_names, 940 __rte_unused unsigned limit) 941 { 942 unsigned i; 943 unsigned count = 0; 944 unsigned t; 945 946 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 947 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 948 949 if (xstats_names != NULL) { 950 /* Note: limit checked in rte_eth_xstats_names() */ 951 952 for (i = 0; i < dev->data->nb_rx_queues; i++) { 953 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 954 if (rxvq == NULL) 955 continue; 956 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 957 snprintf(xstats_names[count].name, 958 sizeof(xstats_names[count].name), 959 "rx_q%u_%s", i, 960 rte_virtio_rxq_stat_strings[t].name); 961 count++; 962 } 963 } 964 965 for (i = 0; i < dev->data->nb_tx_queues; i++) { 966 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 967 if (txvq == NULL) 968 continue; 969 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 970 snprintf(xstats_names[count].name, 971 sizeof(xstats_names[count].name), 972 "tx_q%u_%s", i, 973 rte_virtio_txq_stat_strings[t].name); 974 count++; 975 } 976 } 977 return count; 978 } 979 return nstats; 980 } 981 982 static int 983 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 984 unsigned n) 985 { 986 unsigned i; 987 unsigned count = 0; 988 989 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 990 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 991 992 if (n < nstats) 993 return nstats; 994 995 for (i = 0; i < dev->data->nb_rx_queues; i++) { 996 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 997 998 if (rxvq == NULL) 999 continue; 1000 1001 unsigned t; 1002 1003 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1004 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1005 rte_virtio_rxq_stat_strings[t].offset); 1006 xstats[count].id = count; 1007 count++; 1008 } 1009 } 1010 1011 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1012 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1013 1014 if (txvq == NULL) 1015 continue; 1016 1017 unsigned t; 1018 1019 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1020 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1021 rte_virtio_txq_stat_strings[t].offset); 1022 xstats[count].id = count; 1023 count++; 1024 } 1025 } 1026 1027 return count; 1028 } 1029 1030 static int 1031 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1032 { 1033 virtio_update_stats(dev, stats); 1034 1035 return 0; 1036 } 1037 1038 static void 1039 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1040 { 1041 unsigned int i; 1042 1043 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1044 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1045 if (txvq == NULL) 1046 continue; 1047 1048 txvq->stats.packets = 0; 1049 txvq->stats.bytes = 0; 1050 txvq->stats.errors = 0; 1051 txvq->stats.multicast = 0; 1052 txvq->stats.broadcast = 0; 1053 memset(txvq->stats.size_bins, 0, 1054 sizeof(txvq->stats.size_bins[0]) * 8); 1055 } 1056 1057 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1058 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1059 if (rxvq == NULL) 1060 continue; 1061 1062 rxvq->stats.packets = 0; 1063 rxvq->stats.bytes = 0; 1064 rxvq->stats.errors = 0; 1065 rxvq->stats.multicast = 0; 1066 rxvq->stats.broadcast = 0; 1067 memset(rxvq->stats.size_bins, 0, 1068 sizeof(rxvq->stats.size_bins[0]) * 8); 1069 } 1070 } 1071 1072 static void 1073 virtio_set_hwaddr(struct virtio_hw *hw) 1074 { 1075 vtpci_write_dev_config(hw, 1076 offsetof(struct virtio_net_config, mac), 1077 &hw->mac_addr, ETHER_ADDR_LEN); 1078 } 1079 1080 static void 1081 virtio_get_hwaddr(struct virtio_hw *hw) 1082 { 1083 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) { 1084 vtpci_read_dev_config(hw, 1085 offsetof(struct virtio_net_config, mac), 1086 &hw->mac_addr, ETHER_ADDR_LEN); 1087 } else { 1088 eth_random_addr(&hw->mac_addr[0]); 1089 virtio_set_hwaddr(hw); 1090 } 1091 } 1092 1093 static int 1094 virtio_mac_table_set(struct virtio_hw *hw, 1095 const struct virtio_net_ctrl_mac *uc, 1096 const struct virtio_net_ctrl_mac *mc) 1097 { 1098 struct virtio_pmd_ctrl ctrl; 1099 int err, len[2]; 1100 1101 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1102 PMD_DRV_LOG(INFO, "host does not support mac table"); 1103 return -1; 1104 } 1105 1106 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1107 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1108 1109 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries); 1110 memcpy(ctrl.data, uc, len[0]); 1111 1112 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries); 1113 memcpy(ctrl.data + len[0], mc, len[1]); 1114 1115 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1116 if (err != 0) 1117 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1118 return err; 1119 } 1120 1121 static int 1122 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, 1123 uint32_t index, uint32_t vmdq __rte_unused) 1124 { 1125 struct virtio_hw *hw = dev->data->dev_private; 1126 const struct ether_addr *addrs = dev->data->mac_addrs; 1127 unsigned int i; 1128 struct virtio_net_ctrl_mac *uc, *mc; 1129 1130 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1131 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1132 return -EINVAL; 1133 } 1134 1135 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1136 uc->entries = 0; 1137 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1138 mc->entries = 0; 1139 1140 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1141 const struct ether_addr *addr 1142 = (i == index) ? mac_addr : addrs + i; 1143 struct virtio_net_ctrl_mac *tbl 1144 = is_multicast_ether_addr(addr) ? mc : uc; 1145 1146 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN); 1147 } 1148 1149 return virtio_mac_table_set(hw, uc, mc); 1150 } 1151 1152 static void 1153 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1154 { 1155 struct virtio_hw *hw = dev->data->dev_private; 1156 struct ether_addr *addrs = dev->data->mac_addrs; 1157 struct virtio_net_ctrl_mac *uc, *mc; 1158 unsigned int i; 1159 1160 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1161 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1162 return; 1163 } 1164 1165 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1166 uc->entries = 0; 1167 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1168 mc->entries = 0; 1169 1170 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1171 struct virtio_net_ctrl_mac *tbl; 1172 1173 if (i == index || is_zero_ether_addr(addrs + i)) 1174 continue; 1175 1176 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc; 1177 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN); 1178 } 1179 1180 virtio_mac_table_set(hw, uc, mc); 1181 } 1182 1183 static int 1184 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr) 1185 { 1186 struct virtio_hw *hw = dev->data->dev_private; 1187 1188 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN); 1189 1190 /* Use atomic update if available */ 1191 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1192 struct virtio_pmd_ctrl ctrl; 1193 int len = ETHER_ADDR_LEN; 1194 1195 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1196 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1197 1198 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN); 1199 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1200 } 1201 1202 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1203 return -ENOTSUP; 1204 1205 virtio_set_hwaddr(hw); 1206 return 0; 1207 } 1208 1209 static int 1210 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1211 { 1212 struct virtio_hw *hw = dev->data->dev_private; 1213 struct virtio_pmd_ctrl ctrl; 1214 int len; 1215 1216 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1217 return -ENOTSUP; 1218 1219 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1220 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1221 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1222 len = sizeof(vlan_id); 1223 1224 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1225 } 1226 1227 static int 1228 virtio_intr_enable(struct rte_eth_dev *dev) 1229 { 1230 struct virtio_hw *hw = dev->data->dev_private; 1231 1232 if (rte_intr_enable(dev->intr_handle) < 0) 1233 return -1; 1234 1235 if (!hw->virtio_user_dev) 1236 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1237 1238 return 0; 1239 } 1240 1241 static int 1242 virtio_intr_disable(struct rte_eth_dev *dev) 1243 { 1244 struct virtio_hw *hw = dev->data->dev_private; 1245 1246 if (rte_intr_disable(dev->intr_handle) < 0) 1247 return -1; 1248 1249 if (!hw->virtio_user_dev) 1250 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1251 1252 return 0; 1253 } 1254 1255 static int 1256 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1257 { 1258 uint64_t host_features; 1259 1260 /* Prepare guest_features: feature that driver wants to support */ 1261 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1262 req_features); 1263 1264 /* Read device(host) feature bits */ 1265 host_features = VTPCI_OPS(hw)->get_features(hw); 1266 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1267 host_features); 1268 1269 /* If supported, ensure MTU value is valid before acknowledging it. */ 1270 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1271 struct virtio_net_config config; 1272 1273 vtpci_read_dev_config(hw, 1274 offsetof(struct virtio_net_config, mtu), 1275 &config.mtu, sizeof(config.mtu)); 1276 1277 if (config.mtu < ETHER_MIN_MTU) 1278 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1279 } 1280 1281 /* 1282 * Negotiate features: Subset of device feature bits are written back 1283 * guest feature bits. 1284 */ 1285 hw->guest_features = req_features; 1286 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1287 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1288 hw->guest_features); 1289 1290 if (hw->modern) { 1291 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1292 PMD_INIT_LOG(ERR, 1293 "VIRTIO_F_VERSION_1 features is not enabled."); 1294 return -1; 1295 } 1296 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1297 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1298 PMD_INIT_LOG(ERR, 1299 "failed to set FEATURES_OK status!"); 1300 return -1; 1301 } 1302 } 1303 1304 hw->req_guest_features = req_features; 1305 1306 return 0; 1307 } 1308 1309 int 1310 virtio_dev_pause(struct rte_eth_dev *dev) 1311 { 1312 struct virtio_hw *hw = dev->data->dev_private; 1313 1314 rte_spinlock_lock(&hw->state_lock); 1315 1316 if (hw->started == 0) { 1317 /* Device is just stopped. */ 1318 rte_spinlock_unlock(&hw->state_lock); 1319 return -1; 1320 } 1321 hw->started = 0; 1322 /* 1323 * Prevent the worker threads from touching queues to avoid contention, 1324 * 1 ms should be enough for the ongoing Tx function to finish. 1325 */ 1326 rte_delay_ms(1); 1327 return 0; 1328 } 1329 1330 /* 1331 * Recover hw state to let the worker threads continue. 1332 */ 1333 void 1334 virtio_dev_resume(struct rte_eth_dev *dev) 1335 { 1336 struct virtio_hw *hw = dev->data->dev_private; 1337 1338 hw->started = 1; 1339 rte_spinlock_unlock(&hw->state_lock); 1340 } 1341 1342 /* 1343 * Should be called only after device is paused. 1344 */ 1345 int 1346 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1347 int nb_pkts) 1348 { 1349 struct virtio_hw *hw = dev->data->dev_private; 1350 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1351 int ret; 1352 1353 hw->inject_pkts = tx_pkts; 1354 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1355 hw->inject_pkts = NULL; 1356 1357 return ret; 1358 } 1359 1360 static void 1361 virtio_notify_peers(struct rte_eth_dev *dev) 1362 { 1363 struct virtio_hw *hw = dev->data->dev_private; 1364 struct virtnet_rx *rxvq; 1365 struct rte_mbuf *rarp_mbuf; 1366 1367 if (!dev->data->rx_queues) 1368 return; 1369 1370 rxvq = dev->data->rx_queues[0]; 1371 if (!rxvq) 1372 return; 1373 1374 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1375 (struct ether_addr *)hw->mac_addr); 1376 if (rarp_mbuf == NULL) { 1377 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1378 return; 1379 } 1380 1381 /* If virtio port just stopped, no need to send RARP */ 1382 if (virtio_dev_pause(dev) < 0) { 1383 rte_pktmbuf_free(rarp_mbuf); 1384 return; 1385 } 1386 1387 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1388 virtio_dev_resume(dev); 1389 } 1390 1391 static void 1392 virtio_ack_link_announce(struct rte_eth_dev *dev) 1393 { 1394 struct virtio_hw *hw = dev->data->dev_private; 1395 struct virtio_pmd_ctrl ctrl; 1396 1397 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1398 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1399 1400 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1401 } 1402 1403 /* 1404 * Process virtio config changed interrupt. Call the callback 1405 * if link state changed, generate gratuitous RARP packet if 1406 * the status indicates an ANNOUNCE. 1407 */ 1408 void 1409 virtio_interrupt_handler(void *param) 1410 { 1411 struct rte_eth_dev *dev = param; 1412 struct virtio_hw *hw = dev->data->dev_private; 1413 uint8_t isr; 1414 uint16_t status; 1415 1416 /* Read interrupt status which clears interrupt */ 1417 isr = vtpci_isr(hw); 1418 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1419 1420 if (virtio_intr_enable(dev) < 0) 1421 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1422 1423 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1424 if (virtio_dev_link_update(dev, 0) == 0) 1425 _rte_eth_dev_callback_process(dev, 1426 RTE_ETH_EVENT_INTR_LSC, 1427 NULL); 1428 1429 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1430 vtpci_read_dev_config(hw, 1431 offsetof(struct virtio_net_config, status), 1432 &status, sizeof(status)); 1433 if (status & VIRTIO_NET_S_ANNOUNCE) { 1434 virtio_notify_peers(dev); 1435 if (hw->cvq) 1436 virtio_ack_link_announce(dev); 1437 } 1438 } 1439 } 1440 } 1441 1442 /* set rx and tx handlers according to what is supported */ 1443 static void 1444 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1445 { 1446 struct virtio_hw *hw = eth_dev->data->dev_private; 1447 1448 if (vtpci_packed_queue(hw)) { 1449 PMD_INIT_LOG(INFO, 1450 "virtio: using packed ring standard Tx path on port %u", 1451 eth_dev->data->port_id); 1452 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1453 } else { 1454 if (hw->use_inorder_tx) { 1455 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1456 eth_dev->data->port_id); 1457 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1458 } else { 1459 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1460 eth_dev->data->port_id); 1461 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1462 } 1463 } 1464 1465 if (vtpci_packed_queue(hw)) { 1466 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1467 PMD_INIT_LOG(INFO, 1468 "virtio: using packed ring mergeable buffer Rx path on port %u", 1469 eth_dev->data->port_id); 1470 eth_dev->rx_pkt_burst = 1471 &virtio_recv_mergeable_pkts_packed; 1472 } else { 1473 PMD_INIT_LOG(INFO, 1474 "virtio: using packed ring standard Rx path on port %u", 1475 eth_dev->data->port_id); 1476 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1477 } 1478 } else { 1479 if (hw->use_simple_rx) { 1480 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", 1481 eth_dev->data->port_id); 1482 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1483 } else if (hw->use_inorder_rx) { 1484 PMD_INIT_LOG(INFO, 1485 "virtio: using inorder Rx path on port %u", 1486 eth_dev->data->port_id); 1487 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1488 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1489 PMD_INIT_LOG(INFO, 1490 "virtio: using mergeable buffer Rx path on port %u", 1491 eth_dev->data->port_id); 1492 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1493 } else { 1494 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1495 eth_dev->data->port_id); 1496 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1497 } 1498 } 1499 1500 } 1501 1502 /* Only support 1:1 queue/interrupt mapping so far. 1503 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1504 * interrupt vectors (<N+1). 1505 */ 1506 static int 1507 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1508 { 1509 uint32_t i; 1510 struct virtio_hw *hw = dev->data->dev_private; 1511 1512 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1513 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1514 dev->intr_handle->intr_vec[i] = i + 1; 1515 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1516 VIRTIO_MSI_NO_VECTOR) { 1517 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1518 return -EBUSY; 1519 } 1520 } 1521 1522 return 0; 1523 } 1524 1525 static void 1526 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1527 { 1528 uint32_t i; 1529 struct virtio_hw *hw = dev->data->dev_private; 1530 1531 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1532 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1533 VTPCI_OPS(hw)->set_queue_irq(hw, 1534 hw->vqs[i * VTNET_CQ], 1535 VIRTIO_MSI_NO_VECTOR); 1536 } 1537 1538 static int 1539 virtio_configure_intr(struct rte_eth_dev *dev) 1540 { 1541 struct virtio_hw *hw = dev->data->dev_private; 1542 1543 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1544 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1545 return -ENOTSUP; 1546 } 1547 1548 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1549 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1550 return -1; 1551 } 1552 1553 if (!dev->intr_handle->intr_vec) { 1554 dev->intr_handle->intr_vec = 1555 rte_zmalloc("intr_vec", 1556 hw->max_queue_pairs * sizeof(int), 0); 1557 if (!dev->intr_handle->intr_vec) { 1558 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1559 hw->max_queue_pairs); 1560 return -ENOMEM; 1561 } 1562 } 1563 1564 /* Re-register callback to update max_intr */ 1565 rte_intr_callback_unregister(dev->intr_handle, 1566 virtio_interrupt_handler, 1567 dev); 1568 rte_intr_callback_register(dev->intr_handle, 1569 virtio_interrupt_handler, 1570 dev); 1571 1572 /* DO NOT try to remove this! This function will enable msix, or QEMU 1573 * will encounter SIGSEGV when DRIVER_OK is sent. 1574 * And for legacy devices, this should be done before queue/vec binding 1575 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1576 * (22) will be ignored. 1577 */ 1578 if (virtio_intr_enable(dev) < 0) { 1579 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1580 return -1; 1581 } 1582 1583 if (virtio_queues_bind_intr(dev) < 0) { 1584 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1585 return -1; 1586 } 1587 1588 return 0; 1589 } 1590 1591 /* reset device and renegotiate features if needed */ 1592 static int 1593 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1594 { 1595 struct virtio_hw *hw = eth_dev->data->dev_private; 1596 struct virtio_net_config *config; 1597 struct virtio_net_config local_config; 1598 struct rte_pci_device *pci_dev = NULL; 1599 int ret; 1600 1601 /* Reset the device although not necessary at startup */ 1602 vtpci_reset(hw); 1603 1604 if (hw->vqs) { 1605 virtio_dev_free_mbufs(eth_dev); 1606 virtio_free_queues(hw); 1607 } 1608 1609 /* Tell the host we've noticed this device. */ 1610 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1611 1612 /* Tell the host we've known how to drive the device. */ 1613 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1614 if (virtio_negotiate_features(hw, req_features) < 0) 1615 return -1; 1616 1617 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1618 1619 if (!hw->virtio_user_dev) { 1620 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1621 rte_eth_copy_pci_info(eth_dev, pci_dev); 1622 } 1623 1624 /* If host does not support both status and MSI-X then disable LSC */ 1625 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1626 hw->use_msix != VIRTIO_MSIX_NONE) 1627 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1628 else 1629 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1630 1631 /* Setting up rx_header size for the device */ 1632 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1633 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1634 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1635 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1636 else 1637 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1638 1639 /* Copy the permanent MAC address to: virtio_hw */ 1640 virtio_get_hwaddr(hw); 1641 ether_addr_copy((struct ether_addr *) hw->mac_addr, 1642 ð_dev->data->mac_addrs[0]); 1643 PMD_INIT_LOG(DEBUG, 1644 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1645 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1646 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1647 1648 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1649 config = &local_config; 1650 1651 vtpci_read_dev_config(hw, 1652 offsetof(struct virtio_net_config, mac), 1653 &config->mac, sizeof(config->mac)); 1654 1655 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1656 vtpci_read_dev_config(hw, 1657 offsetof(struct virtio_net_config, status), 1658 &config->status, sizeof(config->status)); 1659 } else { 1660 PMD_INIT_LOG(DEBUG, 1661 "VIRTIO_NET_F_STATUS is not supported"); 1662 config->status = 0; 1663 } 1664 1665 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1666 vtpci_read_dev_config(hw, 1667 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1668 &config->max_virtqueue_pairs, 1669 sizeof(config->max_virtqueue_pairs)); 1670 } else { 1671 PMD_INIT_LOG(DEBUG, 1672 "VIRTIO_NET_F_MQ is not supported"); 1673 config->max_virtqueue_pairs = 1; 1674 } 1675 1676 hw->max_queue_pairs = config->max_virtqueue_pairs; 1677 1678 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1679 vtpci_read_dev_config(hw, 1680 offsetof(struct virtio_net_config, mtu), 1681 &config->mtu, 1682 sizeof(config->mtu)); 1683 1684 /* 1685 * MTU value has already been checked at negotiation 1686 * time, but check again in case it has changed since 1687 * then, which should not happen. 1688 */ 1689 if (config->mtu < ETHER_MIN_MTU) { 1690 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1691 config->mtu); 1692 return -1; 1693 } 1694 1695 hw->max_mtu = config->mtu; 1696 /* Set initial MTU to maximum one supported by vhost */ 1697 eth_dev->data->mtu = config->mtu; 1698 1699 } else { 1700 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1701 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1702 } 1703 1704 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1705 config->max_virtqueue_pairs); 1706 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1707 PMD_INIT_LOG(DEBUG, 1708 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1709 config->mac[0], config->mac[1], 1710 config->mac[2], config->mac[3], 1711 config->mac[4], config->mac[5]); 1712 } else { 1713 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1714 hw->max_queue_pairs = 1; 1715 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1716 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1717 } 1718 1719 ret = virtio_alloc_queues(eth_dev); 1720 if (ret < 0) 1721 return ret; 1722 1723 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1724 if (virtio_configure_intr(eth_dev) < 0) { 1725 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1726 return -1; 1727 } 1728 } 1729 1730 vtpci_reinit_complete(hw); 1731 1732 if (pci_dev) 1733 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1734 eth_dev->data->port_id, pci_dev->id.vendor_id, 1735 pci_dev->id.device_id); 1736 1737 return 0; 1738 } 1739 1740 /* 1741 * Remap the PCI device again (IO port map for legacy device and 1742 * memory map for modern device), so that the secondary process 1743 * could have the PCI initiated correctly. 1744 */ 1745 static int 1746 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1747 { 1748 if (hw->modern) { 1749 /* 1750 * We don't have to re-parse the PCI config space, since 1751 * rte_pci_map_device() makes sure the mapped address 1752 * in secondary process would equal to the one mapped in 1753 * the primary process: error will be returned if that 1754 * requirement is not met. 1755 * 1756 * That said, we could simply reuse all cap pointers 1757 * (such as dev_cfg, common_cfg, etc.) parsed from the 1758 * primary process, which is stored in shared memory. 1759 */ 1760 if (rte_pci_map_device(pci_dev)) { 1761 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1762 return -1; 1763 } 1764 } else { 1765 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1766 return -1; 1767 } 1768 1769 return 0; 1770 } 1771 1772 static void 1773 virtio_set_vtpci_ops(struct virtio_hw *hw) 1774 { 1775 #ifdef RTE_VIRTIO_USER 1776 if (hw->virtio_user_dev) 1777 VTPCI_OPS(hw) = &virtio_user_ops; 1778 else 1779 #endif 1780 if (hw->modern) 1781 VTPCI_OPS(hw) = &modern_ops; 1782 else 1783 VTPCI_OPS(hw) = &legacy_ops; 1784 } 1785 1786 /* 1787 * This function is based on probe() function in virtio_pci.c 1788 * It returns 0 on success. 1789 */ 1790 int 1791 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1792 { 1793 struct virtio_hw *hw = eth_dev->data->dev_private; 1794 int ret; 1795 1796 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); 1797 1798 eth_dev->dev_ops = &virtio_eth_dev_ops; 1799 1800 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1801 if (!hw->virtio_user_dev) { 1802 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1803 if (ret) 1804 return ret; 1805 } 1806 1807 virtio_set_vtpci_ops(hw); 1808 set_rxtx_funcs(eth_dev); 1809 1810 return 0; 1811 } 1812 1813 /* Allocate memory for storing MAC addresses */ 1814 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0); 1815 if (eth_dev->data->mac_addrs == NULL) { 1816 PMD_INIT_LOG(ERR, 1817 "Failed to allocate %d bytes needed to store MAC addresses", 1818 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN); 1819 return -ENOMEM; 1820 } 1821 1822 hw->port_id = eth_dev->data->port_id; 1823 /* For virtio_user case the hw->virtio_user_dev is populated by 1824 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1825 */ 1826 if (!hw->virtio_user_dev) { 1827 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1828 if (ret) 1829 goto out; 1830 } 1831 1832 /* reset device and negotiate default features */ 1833 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1834 if (ret < 0) 1835 goto out; 1836 1837 return 0; 1838 1839 out: 1840 rte_free(eth_dev->data->mac_addrs); 1841 return ret; 1842 } 1843 1844 static int 1845 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1846 { 1847 PMD_INIT_FUNC_TRACE(); 1848 1849 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1850 return 0; 1851 1852 virtio_dev_stop(eth_dev); 1853 virtio_dev_close(eth_dev); 1854 1855 eth_dev->dev_ops = NULL; 1856 eth_dev->tx_pkt_burst = NULL; 1857 eth_dev->rx_pkt_burst = NULL; 1858 1859 if (eth_dev->device) 1860 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1861 1862 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 1863 1864 return 0; 1865 } 1866 1867 static int vdpa_check_handler(__rte_unused const char *key, 1868 const char *value, __rte_unused void *opaque) 1869 { 1870 if (strcmp(value, "1")) 1871 return -1; 1872 1873 return 0; 1874 } 1875 1876 static int 1877 vdpa_mode_selected(struct rte_devargs *devargs) 1878 { 1879 struct rte_kvargs *kvlist; 1880 const char *key = "vdpa"; 1881 int ret = 0; 1882 1883 if (devargs == NULL) 1884 return 0; 1885 1886 kvlist = rte_kvargs_parse(devargs->args, NULL); 1887 if (kvlist == NULL) 1888 return 0; 1889 1890 if (!rte_kvargs_count(kvlist, key)) 1891 goto exit; 1892 1893 /* vdpa mode selected when there's a key-value pair: vdpa=1 */ 1894 if (rte_kvargs_process(kvlist, key, 1895 vdpa_check_handler, NULL) < 0) { 1896 goto exit; 1897 } 1898 ret = 1; 1899 1900 exit: 1901 rte_kvargs_free(kvlist); 1902 return ret; 1903 } 1904 1905 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1906 struct rte_pci_device *pci_dev) 1907 { 1908 if (rte_eal_iopl_init() != 0) { 1909 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); 1910 return 1; 1911 } 1912 1913 /* virtio pmd skips probe if device needs to work in vdpa mode */ 1914 if (vdpa_mode_selected(pci_dev->device.devargs)) 1915 return 1; 1916 1917 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 1918 eth_virtio_dev_init); 1919 } 1920 1921 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 1922 { 1923 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 1924 } 1925 1926 static struct rte_pci_driver rte_virtio_pmd = { 1927 .driver = { 1928 .name = "net_virtio", 1929 }, 1930 .id_table = pci_id_virtio_map, 1931 .drv_flags = 0, 1932 .probe = eth_virtio_pci_probe, 1933 .remove = eth_virtio_pci_remove, 1934 }; 1935 1936 RTE_INIT(rte_virtio_pmd_init) 1937 { 1938 rte_eal_iopl_init(); 1939 rte_pci_register(&rte_virtio_pmd); 1940 } 1941 1942 static bool 1943 rx_offload_enabled(struct virtio_hw *hw) 1944 { 1945 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 1946 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 1947 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 1948 } 1949 1950 static bool 1951 tx_offload_enabled(struct virtio_hw *hw) 1952 { 1953 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 1954 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 1955 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 1956 } 1957 1958 /* 1959 * Configure virtio device 1960 * It returns 0 on success. 1961 */ 1962 static int 1963 virtio_dev_configure(struct rte_eth_dev *dev) 1964 { 1965 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 1966 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 1967 struct virtio_hw *hw = dev->data->dev_private; 1968 uint64_t rx_offloads = rxmode->offloads; 1969 uint64_t tx_offloads = txmode->offloads; 1970 uint64_t req_features; 1971 int ret; 1972 1973 PMD_INIT_LOG(DEBUG, "configure"); 1974 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 1975 1976 if (dev->data->dev_conf.intr_conf.rxq) { 1977 ret = virtio_init_device(dev, hw->req_guest_features); 1978 if (ret < 0) 1979 return ret; 1980 } 1981 1982 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 1983 DEV_RX_OFFLOAD_TCP_CKSUM)) 1984 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 1985 1986 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 1987 req_features |= 1988 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 1989 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 1990 1991 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 1992 DEV_TX_OFFLOAD_TCP_CKSUM)) 1993 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 1994 1995 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 1996 req_features |= 1997 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 1998 (1ULL << VIRTIO_NET_F_HOST_TSO6); 1999 2000 /* if request features changed, reinit the device */ 2001 if (req_features != hw->req_guest_features) { 2002 ret = virtio_init_device(dev, req_features); 2003 if (ret < 0) 2004 return ret; 2005 } 2006 2007 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2008 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2009 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2010 PMD_DRV_LOG(ERR, 2011 "rx checksum not available on this host"); 2012 return -ENOTSUP; 2013 } 2014 2015 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2016 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2017 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2018 PMD_DRV_LOG(ERR, 2019 "Large Receive Offload not available on this host"); 2020 return -ENOTSUP; 2021 } 2022 2023 /* start control queue */ 2024 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2025 virtio_dev_cq_start(dev); 2026 2027 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2028 hw->vlan_strip = 1; 2029 2030 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2031 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2032 PMD_DRV_LOG(ERR, 2033 "vlan filtering not available on this host"); 2034 return -ENOTSUP; 2035 } 2036 2037 hw->has_tx_offload = tx_offload_enabled(hw); 2038 hw->has_rx_offload = rx_offload_enabled(hw); 2039 2040 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2041 /* Enable vector (0) for Link State Intrerrupt */ 2042 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2043 VIRTIO_MSI_NO_VECTOR) { 2044 PMD_DRV_LOG(ERR, "failed to set config vector"); 2045 return -EBUSY; 2046 } 2047 2048 rte_spinlock_init(&hw->state_lock); 2049 2050 hw->use_simple_rx = 1; 2051 2052 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2053 hw->use_inorder_tx = 1; 2054 hw->use_inorder_rx = 1; 2055 hw->use_simple_rx = 0; 2056 } 2057 2058 if (vtpci_packed_queue(hw)) { 2059 hw->use_simple_rx = 0; 2060 hw->use_inorder_rx = 0; 2061 hw->use_inorder_tx = 0; 2062 } 2063 2064 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2065 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2066 hw->use_simple_rx = 0; 2067 } 2068 #endif 2069 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2070 hw->use_simple_rx = 0; 2071 } 2072 2073 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2074 DEV_RX_OFFLOAD_TCP_CKSUM | 2075 DEV_RX_OFFLOAD_TCP_LRO | 2076 DEV_RX_OFFLOAD_VLAN_STRIP)) 2077 hw->use_simple_rx = 0; 2078 2079 hw->opened = true; 2080 2081 return 0; 2082 } 2083 2084 2085 static int 2086 virtio_dev_start(struct rte_eth_dev *dev) 2087 { 2088 uint16_t nb_queues, i; 2089 struct virtnet_rx *rxvq; 2090 struct virtnet_tx *txvq __rte_unused; 2091 struct virtio_hw *hw = dev->data->dev_private; 2092 int ret; 2093 2094 /* Finish the initialization of the queues */ 2095 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2096 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2097 if (ret < 0) 2098 return ret; 2099 } 2100 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2101 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2102 if (ret < 0) 2103 return ret; 2104 } 2105 2106 /* check if lsc interrupt feature is enabled */ 2107 if (dev->data->dev_conf.intr_conf.lsc) { 2108 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2109 PMD_DRV_LOG(ERR, "link status not supported by host"); 2110 return -ENOTSUP; 2111 } 2112 } 2113 2114 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2115 * in device configure, but it could be unmapped when device is 2116 * stopped. 2117 */ 2118 if (dev->data->dev_conf.intr_conf.lsc || 2119 dev->data->dev_conf.intr_conf.rxq) { 2120 virtio_intr_disable(dev); 2121 2122 /* Setup interrupt callback */ 2123 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2124 rte_intr_callback_register(dev->intr_handle, 2125 virtio_interrupt_handler, 2126 dev); 2127 2128 if (virtio_intr_enable(dev) < 0) { 2129 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2130 return -EIO; 2131 } 2132 } 2133 2134 /*Notify the backend 2135 *Otherwise the tap backend might already stop its queue due to fullness. 2136 *vhost backend will have no chance to be waked up 2137 */ 2138 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2139 if (hw->max_queue_pairs > 1) { 2140 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2141 return -EINVAL; 2142 } 2143 2144 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2145 2146 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2147 rxvq = dev->data->rx_queues[i]; 2148 /* Flush the old packets */ 2149 virtqueue_rxvq_flush(rxvq->vq); 2150 virtqueue_notify(rxvq->vq); 2151 } 2152 2153 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2154 txvq = dev->data->tx_queues[i]; 2155 virtqueue_notify(txvq->vq); 2156 } 2157 2158 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2159 2160 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2161 rxvq = dev->data->rx_queues[i]; 2162 VIRTQUEUE_DUMP(rxvq->vq); 2163 } 2164 2165 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2166 txvq = dev->data->tx_queues[i]; 2167 VIRTQUEUE_DUMP(txvq->vq); 2168 } 2169 2170 set_rxtx_funcs(dev); 2171 hw->started = true; 2172 2173 /* Initialize Link state */ 2174 virtio_dev_link_update(dev, 0); 2175 2176 return 0; 2177 } 2178 2179 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2180 { 2181 struct virtio_hw *hw = dev->data->dev_private; 2182 uint16_t nr_vq = virtio_get_nr_vq(hw); 2183 const char *type __rte_unused; 2184 unsigned int i, mbuf_num = 0; 2185 struct virtqueue *vq; 2186 struct rte_mbuf *buf; 2187 int queue_type; 2188 2189 if (hw->vqs == NULL) 2190 return; 2191 2192 for (i = 0; i < nr_vq; i++) { 2193 vq = hw->vqs[i]; 2194 if (!vq) 2195 continue; 2196 2197 queue_type = virtio_get_queue_type(hw, i); 2198 if (queue_type == VTNET_RQ) 2199 type = "rxq"; 2200 else if (queue_type == VTNET_TQ) 2201 type = "txq"; 2202 else 2203 continue; 2204 2205 PMD_INIT_LOG(DEBUG, 2206 "Before freeing %s[%d] used and unused buf", 2207 type, i); 2208 VIRTQUEUE_DUMP(vq); 2209 2210 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2211 rte_pktmbuf_free(buf); 2212 mbuf_num++; 2213 } 2214 2215 PMD_INIT_LOG(DEBUG, 2216 "After freeing %s[%d] used and unused buf", 2217 type, i); 2218 VIRTQUEUE_DUMP(vq); 2219 } 2220 2221 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2222 } 2223 2224 /* 2225 * Stop device: disable interrupt and mark link down 2226 */ 2227 static void 2228 virtio_dev_stop(struct rte_eth_dev *dev) 2229 { 2230 struct virtio_hw *hw = dev->data->dev_private; 2231 struct rte_eth_link link; 2232 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2233 2234 PMD_INIT_LOG(DEBUG, "stop"); 2235 2236 rte_spinlock_lock(&hw->state_lock); 2237 if (!hw->started) 2238 goto out_unlock; 2239 hw->started = false; 2240 2241 if (intr_conf->lsc || intr_conf->rxq) { 2242 virtio_intr_disable(dev); 2243 2244 /* Reset interrupt callback */ 2245 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2246 rte_intr_callback_unregister(dev->intr_handle, 2247 virtio_interrupt_handler, 2248 dev); 2249 } 2250 } 2251 2252 memset(&link, 0, sizeof(link)); 2253 rte_eth_linkstatus_set(dev, &link); 2254 out_unlock: 2255 rte_spinlock_unlock(&hw->state_lock); 2256 } 2257 2258 static int 2259 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2260 { 2261 struct rte_eth_link link; 2262 uint16_t status; 2263 struct virtio_hw *hw = dev->data->dev_private; 2264 2265 memset(&link, 0, sizeof(link)); 2266 link.link_duplex = ETH_LINK_FULL_DUPLEX; 2267 link.link_speed = ETH_SPEED_NUM_10G; 2268 link.link_autoneg = ETH_LINK_FIXED; 2269 2270 if (!hw->started) { 2271 link.link_status = ETH_LINK_DOWN; 2272 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2273 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2274 vtpci_read_dev_config(hw, 2275 offsetof(struct virtio_net_config, status), 2276 &status, sizeof(status)); 2277 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2278 link.link_status = ETH_LINK_DOWN; 2279 PMD_INIT_LOG(DEBUG, "Port %d is down", 2280 dev->data->port_id); 2281 } else { 2282 link.link_status = ETH_LINK_UP; 2283 PMD_INIT_LOG(DEBUG, "Port %d is up", 2284 dev->data->port_id); 2285 } 2286 } else { 2287 link.link_status = ETH_LINK_UP; 2288 } 2289 2290 return rte_eth_linkstatus_set(dev, &link); 2291 } 2292 2293 static int 2294 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2295 { 2296 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2297 struct virtio_hw *hw = dev->data->dev_private; 2298 uint64_t offloads = rxmode->offloads; 2299 2300 if (mask & ETH_VLAN_FILTER_MASK) { 2301 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2302 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2303 2304 PMD_DRV_LOG(NOTICE, 2305 "vlan filtering not available on this host"); 2306 2307 return -ENOTSUP; 2308 } 2309 } 2310 2311 if (mask & ETH_VLAN_STRIP_MASK) 2312 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2313 2314 return 0; 2315 } 2316 2317 static void 2318 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2319 { 2320 uint64_t tso_mask, host_features; 2321 struct virtio_hw *hw = dev->data->dev_private; 2322 2323 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ 2324 2325 dev_info->max_rx_queues = 2326 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2327 dev_info->max_tx_queues = 2328 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2329 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2330 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2331 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2332 2333 host_features = VTPCI_OPS(hw)->get_features(hw); 2334 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2335 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2336 dev_info->rx_offload_capa |= 2337 DEV_RX_OFFLOAD_TCP_CKSUM | 2338 DEV_RX_OFFLOAD_UDP_CKSUM; 2339 } 2340 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2341 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2342 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2343 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2344 if ((host_features & tso_mask) == tso_mask) 2345 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2346 2347 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2348 DEV_TX_OFFLOAD_VLAN_INSERT; 2349 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2350 dev_info->tx_offload_capa |= 2351 DEV_TX_OFFLOAD_UDP_CKSUM | 2352 DEV_TX_OFFLOAD_TCP_CKSUM; 2353 } 2354 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2355 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2356 if ((host_features & tso_mask) == tso_mask) 2357 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2358 } 2359 2360 /* 2361 * It enables testpmd to collect per queue stats. 2362 */ 2363 static int 2364 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2365 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2366 __rte_unused uint8_t is_rx) 2367 { 2368 return 0; 2369 } 2370 2371 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2372 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2373 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2374 2375 RTE_INIT(virtio_init_log) 2376 { 2377 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2378 if (virtio_logtype_init >= 0) 2379 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2380 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2381 if (virtio_logtype_driver >= 0) 2382 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2383 } 2384