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_disable(struct rte_eth_dev *dev); 75 76 static int virtio_dev_queue_stats_mapping_set( 77 struct rte_eth_dev *eth_dev, 78 uint16_t queue_id, 79 uint8_t stat_idx, 80 uint8_t is_rx); 81 82 int virtio_logtype_init; 83 int virtio_logtype_driver; 84 85 static void virtio_notify_peers(struct rte_eth_dev *dev); 86 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 87 88 /* 89 * The set of PCI devices this driver supports 90 */ 91 static const struct rte_pci_id pci_id_virtio_map[] = { 92 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) }, 93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) }, 94 { .vendor_id = 0, /* sentinel */ }, 95 }; 96 97 struct rte_virtio_xstats_name_off { 98 char name[RTE_ETH_XSTATS_NAME_SIZE]; 99 unsigned offset; 100 }; 101 102 /* [rt]x_qX_ is prepended to the name string here */ 103 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 104 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 105 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 106 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 107 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 108 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 109 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 110 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 111 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 112 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 113 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 114 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 115 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 116 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 117 }; 118 119 /* [rt]x_qX_ is prepended to the name string here */ 120 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 121 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 122 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 123 {"errors", offsetof(struct virtnet_tx, stats.errors)}, 124 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 125 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 126 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 127 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 128 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 129 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 130 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 131 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 132 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 133 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 134 }; 135 136 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 137 sizeof(rte_virtio_rxq_stat_strings[0])) 138 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 139 sizeof(rte_virtio_txq_stat_strings[0])) 140 141 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 142 143 static struct virtio_pmd_ctrl * 144 virtio_send_command_packed(struct virtnet_ctl *cvq, 145 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->vq_packed.ring.desc; 151 struct virtio_pmd_ctrl *result; 152 uint16_t flags; 153 int sum = 0; 154 int nb_descs = 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 flags = vq->vq_packed.cached_flags; 165 desc[head].addr = cvq->virtio_net_hdr_mem; 166 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 167 vq->vq_free_cnt--; 168 nb_descs++; 169 if (++vq->vq_avail_idx >= vq->vq_nentries) { 170 vq->vq_avail_idx -= vq->vq_nentries; 171 vq->vq_packed.cached_flags ^= 172 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(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 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT | 181 vq->vq_packed.cached_flags; 182 sum += dlen[k]; 183 vq->vq_free_cnt--; 184 nb_descs++; 185 if (++vq->vq_avail_idx >= vq->vq_nentries) { 186 vq->vq_avail_idx -= vq->vq_nentries; 187 vq->vq_packed.cached_flags ^= 188 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1); 189 } 190 } 191 192 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 193 + sizeof(struct virtio_net_ctrl_hdr); 194 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 195 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE | 196 vq->vq_packed.cached_flags; 197 vq->vq_free_cnt--; 198 nb_descs++; 199 if (++vq->vq_avail_idx >= vq->vq_nentries) { 200 vq->vq_avail_idx -= vq->vq_nentries; 201 vq->vq_packed.cached_flags ^= 202 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1); 203 } 204 205 virtio_wmb(vq->hw->weak_barriers); 206 desc[head].flags = VRING_DESC_F_NEXT | flags; 207 208 virtio_wmb(vq->hw->weak_barriers); 209 virtqueue_notify(vq); 210 211 /* wait for used descriptors in virtqueue */ 212 while (!desc_is_used(&desc[head], vq)) 213 usleep(100); 214 215 virtio_rmb(vq->hw->weak_barriers); 216 217 /* now get used descriptors */ 218 vq->vq_free_cnt += nb_descs; 219 vq->vq_used_cons_idx += nb_descs; 220 if (vq->vq_used_cons_idx >= vq->vq_nentries) { 221 vq->vq_used_cons_idx -= vq->vq_nentries; 222 vq->vq_packed.used_wrap_counter ^= 1; 223 } 224 225 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n" 226 "vq->vq_avail_idx=%d\n" 227 "vq->vq_used_cons_idx=%d\n" 228 "vq->vq_packed.cached_flags=0x%x\n" 229 "vq->vq_packed.used_wrap_counter=%d\n", 230 vq->vq_free_cnt, 231 vq->vq_avail_idx, 232 vq->vq_used_cons_idx, 233 vq->vq_packed.cached_flags, 234 vq->vq_packed.used_wrap_counter); 235 236 result = cvq->virtio_net_hdr_mz->addr; 237 return result; 238 } 239 240 static struct virtio_pmd_ctrl * 241 virtio_send_command_split(struct virtnet_ctl *cvq, 242 struct virtio_pmd_ctrl *ctrl, 243 int *dlen, int pkt_num) 244 { 245 struct virtio_pmd_ctrl *result; 246 struct virtqueue *vq = cvq->vq; 247 uint32_t head, i; 248 int k, sum = 0; 249 250 head = vq->vq_desc_head_idx; 251 252 /* 253 * Format is enforced in qemu code: 254 * One TX packet for header; 255 * At least one TX packet per argument; 256 * One RX packet for ACK. 257 */ 258 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT; 259 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem; 260 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 261 vq->vq_free_cnt--; 262 i = vq->vq_split.ring.desc[head].next; 263 264 for (k = 0; k < pkt_num; k++) { 265 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT; 266 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 267 + sizeof(struct virtio_net_ctrl_hdr) 268 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 269 vq->vq_split.ring.desc[i].len = dlen[k]; 270 sum += dlen[k]; 271 vq->vq_free_cnt--; 272 i = vq->vq_split.ring.desc[i].next; 273 } 274 275 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE; 276 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 277 + sizeof(struct virtio_net_ctrl_hdr); 278 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status); 279 vq->vq_free_cnt--; 280 281 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next; 282 283 vq_update_avail_ring(vq, head); 284 vq_update_avail_idx(vq); 285 286 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 287 288 virtqueue_notify(vq); 289 290 rte_rmb(); 291 while (VIRTQUEUE_NUSED(vq) == 0) { 292 rte_rmb(); 293 usleep(100); 294 } 295 296 while (VIRTQUEUE_NUSED(vq)) { 297 uint32_t idx, desc_idx, used_idx; 298 struct vring_used_elem *uep; 299 300 used_idx = (uint32_t)(vq->vq_used_cons_idx 301 & (vq->vq_nentries - 1)); 302 uep = &vq->vq_split.ring.used->ring[used_idx]; 303 idx = (uint32_t) uep->id; 304 desc_idx = idx; 305 306 while (vq->vq_split.ring.desc[desc_idx].flags & 307 VRING_DESC_F_NEXT) { 308 desc_idx = vq->vq_split.ring.desc[desc_idx].next; 309 vq->vq_free_cnt++; 310 } 311 312 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx; 313 vq->vq_desc_head_idx = idx; 314 315 vq->vq_used_cons_idx++; 316 vq->vq_free_cnt++; 317 } 318 319 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 320 vq->vq_free_cnt, vq->vq_desc_head_idx); 321 322 result = cvq->virtio_net_hdr_mz->addr; 323 return result; 324 } 325 326 static int 327 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 328 int *dlen, int pkt_num) 329 { 330 virtio_net_ctrl_ack status = ~0; 331 struct virtio_pmd_ctrl *result; 332 struct virtqueue *vq; 333 334 ctrl->status = status; 335 336 if (!cvq || !cvq->vq) { 337 PMD_INIT_LOG(ERR, "Control queue is not supported."); 338 return -1; 339 } 340 341 rte_spinlock_lock(&cvq->lock); 342 vq = cvq->vq; 343 344 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 345 "vq->hw->cvq = %p vq = %p", 346 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 347 348 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 349 rte_spinlock_unlock(&cvq->lock); 350 return -1; 351 } 352 353 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 354 sizeof(struct virtio_pmd_ctrl)); 355 356 if (vtpci_packed_queue(vq->hw)) 357 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num); 358 else 359 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num); 360 361 rte_spinlock_unlock(&cvq->lock); 362 return result->status; 363 } 364 365 static int 366 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 367 { 368 struct virtio_hw *hw = dev->data->dev_private; 369 struct virtio_pmd_ctrl ctrl; 370 int dlen[1]; 371 int ret; 372 373 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 374 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 375 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 376 377 dlen[0] = sizeof(uint16_t); 378 379 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 380 if (ret) { 381 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 382 "failed, this is too late now..."); 383 return -EINVAL; 384 } 385 386 return 0; 387 } 388 389 static void 390 virtio_dev_queue_release(void *queue __rte_unused) 391 { 392 /* do nothing */ 393 } 394 395 static uint16_t 396 virtio_get_nr_vq(struct virtio_hw *hw) 397 { 398 uint16_t nr_vq = hw->max_queue_pairs * 2; 399 400 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 401 nr_vq += 1; 402 403 return nr_vq; 404 } 405 406 static void 407 virtio_init_vring(struct virtqueue *vq) 408 { 409 int size = vq->vq_nentries; 410 uint8_t *ring_mem = vq->vq_ring_virt_mem; 411 412 PMD_INIT_FUNC_TRACE(); 413 414 memset(ring_mem, 0, vq->vq_ring_size); 415 416 vq->vq_used_cons_idx = 0; 417 vq->vq_desc_head_idx = 0; 418 vq->vq_avail_idx = 0; 419 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 420 vq->vq_free_cnt = vq->vq_nentries; 421 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 422 if (vtpci_packed_queue(vq->hw)) { 423 vring_init_packed(&vq->vq_packed.ring, ring_mem, 424 VIRTIO_PCI_VRING_ALIGN, size); 425 vring_desc_init_packed(vq, size); 426 } else { 427 struct vring *vr = &vq->vq_split.ring; 428 429 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size); 430 vring_desc_init_split(vr->desc, size); 431 } 432 /* 433 * Disable device(host) interrupting guest 434 */ 435 virtqueue_disable_intr(vq); 436 } 437 438 static int 439 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) 440 { 441 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 442 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 443 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 444 unsigned int vq_size, size; 445 struct virtio_hw *hw = dev->data->dev_private; 446 struct virtnet_rx *rxvq = NULL; 447 struct virtnet_tx *txvq = NULL; 448 struct virtnet_ctl *cvq = NULL; 449 struct virtqueue *vq; 450 size_t sz_hdr_mz = 0; 451 void *sw_ring = NULL; 452 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx); 453 int ret; 454 int numa_node = dev->device->numa_node; 455 456 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 457 vtpci_queue_idx, numa_node); 458 459 /* 460 * Read the virtqueue size from the Queue Size field 461 * Always power of 2 and if 0 virtqueue does not exist 462 */ 463 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx); 464 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 465 if (vq_size == 0) { 466 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 467 return -EINVAL; 468 } 469 470 if (!rte_is_power_of_2(vq_size)) { 471 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2"); 472 return -EINVAL; 473 } 474 475 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 476 dev->data->port_id, vtpci_queue_idx); 477 478 size = RTE_ALIGN_CEIL(sizeof(*vq) + 479 vq_size * sizeof(struct vq_desc_extra), 480 RTE_CACHE_LINE_SIZE); 481 if (queue_type == VTNET_TQ) { 482 /* 483 * For each xmit packet, allocate a virtio_net_hdr 484 * and indirect ring elements 485 */ 486 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 487 } else if (queue_type == VTNET_CQ) { 488 /* Allocate a page for control vq command, data and status */ 489 sz_hdr_mz = PAGE_SIZE; 490 } 491 492 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 493 numa_node); 494 if (vq == NULL) { 495 PMD_INIT_LOG(ERR, "can not allocate vq"); 496 return -ENOMEM; 497 } 498 hw->vqs[vtpci_queue_idx] = vq; 499 500 vq->hw = hw; 501 vq->vq_queue_index = vtpci_queue_idx; 502 vq->vq_nentries = vq_size; 503 if (vtpci_packed_queue(hw)) { 504 vq->vq_packed.used_wrap_counter = 1; 505 vq->vq_packed.cached_flags = VRING_DESC_F_AVAIL(1); 506 vq->vq_packed.event_flags_shadow = 0; 507 if (queue_type == VTNET_RQ) 508 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE; 509 } 510 511 /* 512 * Reserve a memzone for vring elements 513 */ 514 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN); 515 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN); 516 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 517 size, vq->vq_ring_size); 518 519 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 520 numa_node, RTE_MEMZONE_IOVA_CONTIG, 521 VIRTIO_PCI_VRING_ALIGN); 522 if (mz == NULL) { 523 if (rte_errno == EEXIST) 524 mz = rte_memzone_lookup(vq_name); 525 if (mz == NULL) { 526 ret = -ENOMEM; 527 goto fail_q_alloc; 528 } 529 } 530 531 memset(mz->addr, 0, mz->len); 532 533 vq->vq_ring_mem = mz->iova; 534 vq->vq_ring_virt_mem = mz->addr; 535 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 536 (uint64_t)mz->iova); 537 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 538 (uint64_t)(uintptr_t)mz->addr); 539 540 virtio_init_vring(vq); 541 542 if (sz_hdr_mz) { 543 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 544 dev->data->port_id, vtpci_queue_idx); 545 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 546 numa_node, RTE_MEMZONE_IOVA_CONTIG, 547 RTE_CACHE_LINE_SIZE); 548 if (hdr_mz == NULL) { 549 if (rte_errno == EEXIST) 550 hdr_mz = rte_memzone_lookup(vq_hdr_name); 551 if (hdr_mz == NULL) { 552 ret = -ENOMEM; 553 goto fail_q_alloc; 554 } 555 } 556 } 557 558 if (queue_type == VTNET_RQ) { 559 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 560 sizeof(vq->sw_ring[0]); 561 562 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 563 RTE_CACHE_LINE_SIZE, numa_node); 564 if (!sw_ring) { 565 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 566 ret = -ENOMEM; 567 goto fail_q_alloc; 568 } 569 570 vq->sw_ring = sw_ring; 571 rxvq = &vq->rxq; 572 rxvq->vq = vq; 573 rxvq->port_id = dev->data->port_id; 574 rxvq->mz = mz; 575 } else if (queue_type == VTNET_TQ) { 576 txvq = &vq->txq; 577 txvq->vq = vq; 578 txvq->port_id = dev->data->port_id; 579 txvq->mz = mz; 580 txvq->virtio_net_hdr_mz = hdr_mz; 581 txvq->virtio_net_hdr_mem = hdr_mz->iova; 582 } else if (queue_type == VTNET_CQ) { 583 cvq = &vq->cq; 584 cvq->vq = vq; 585 cvq->mz = mz; 586 cvq->virtio_net_hdr_mz = hdr_mz; 587 cvq->virtio_net_hdr_mem = hdr_mz->iova; 588 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE); 589 590 hw->cvq = cvq; 591 } 592 593 /* For virtio_user case (that is when hw->dev is NULL), we use 594 * virtual address. And we need properly set _offset_, please see 595 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information. 596 */ 597 if (!hw->virtio_user_dev) 598 vq->offset = offsetof(struct rte_mbuf, buf_iova); 599 else { 600 vq->vq_ring_mem = (uintptr_t)mz->addr; 601 vq->offset = offsetof(struct rte_mbuf, buf_addr); 602 if (queue_type == VTNET_TQ) 603 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 604 else if (queue_type == VTNET_CQ) 605 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 606 } 607 608 if (queue_type == VTNET_TQ) { 609 struct virtio_tx_region *txr; 610 unsigned int i; 611 612 txr = hdr_mz->addr; 613 memset(txr, 0, vq_size * sizeof(*txr)); 614 for (i = 0; i < vq_size; i++) { 615 struct vring_desc *start_dp = txr[i].tx_indir; 616 617 /* first indirect descriptor is always the tx header */ 618 if (!vtpci_packed_queue(hw)) { 619 vring_desc_init_split(start_dp, 620 RTE_DIM(txr[i].tx_indir)); 621 start_dp->addr = txvq->virtio_net_hdr_mem 622 + i * sizeof(*txr) 623 + offsetof(struct virtio_tx_region, 624 tx_hdr); 625 start_dp->len = hw->vtnet_hdr_size; 626 start_dp->flags = VRING_DESC_F_NEXT; 627 } 628 } 629 } 630 631 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) { 632 PMD_INIT_LOG(ERR, "setup_queue failed"); 633 return -EINVAL; 634 } 635 636 return 0; 637 638 fail_q_alloc: 639 rte_free(sw_ring); 640 rte_memzone_free(hdr_mz); 641 rte_memzone_free(mz); 642 rte_free(vq); 643 644 return ret; 645 } 646 647 static void 648 virtio_free_queues(struct virtio_hw *hw) 649 { 650 uint16_t nr_vq = virtio_get_nr_vq(hw); 651 struct virtqueue *vq; 652 int queue_type; 653 uint16_t i; 654 655 if (hw->vqs == NULL) 656 return; 657 658 for (i = 0; i < nr_vq; i++) { 659 vq = hw->vqs[i]; 660 if (!vq) 661 continue; 662 663 queue_type = virtio_get_queue_type(hw, i); 664 if (queue_type == VTNET_RQ) { 665 rte_free(vq->sw_ring); 666 rte_memzone_free(vq->rxq.mz); 667 } else if (queue_type == VTNET_TQ) { 668 rte_memzone_free(vq->txq.mz); 669 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 670 } else { 671 rte_memzone_free(vq->cq.mz); 672 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 673 } 674 675 rte_free(vq); 676 hw->vqs[i] = NULL; 677 } 678 679 rte_free(hw->vqs); 680 hw->vqs = NULL; 681 } 682 683 static int 684 virtio_alloc_queues(struct rte_eth_dev *dev) 685 { 686 struct virtio_hw *hw = dev->data->dev_private; 687 uint16_t nr_vq = virtio_get_nr_vq(hw); 688 uint16_t i; 689 int ret; 690 691 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 692 if (!hw->vqs) { 693 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 694 return -ENOMEM; 695 } 696 697 for (i = 0; i < nr_vq; i++) { 698 ret = virtio_init_queue(dev, i); 699 if (ret < 0) { 700 virtio_free_queues(hw); 701 return ret; 702 } 703 } 704 705 return 0; 706 } 707 708 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 709 710 static void 711 virtio_dev_close(struct rte_eth_dev *dev) 712 { 713 struct virtio_hw *hw = dev->data->dev_private; 714 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 715 716 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 717 718 if (!hw->opened) 719 return; 720 hw->opened = false; 721 722 /* reset the NIC */ 723 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 724 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 725 if (intr_conf->rxq) 726 virtio_queues_unbind_intr(dev); 727 728 if (intr_conf->lsc || intr_conf->rxq) { 729 virtio_intr_disable(dev); 730 rte_intr_efd_disable(dev->intr_handle); 731 rte_free(dev->intr_handle->intr_vec); 732 dev->intr_handle->intr_vec = NULL; 733 } 734 735 vtpci_reset(hw); 736 virtio_dev_free_mbufs(dev); 737 virtio_free_queues(hw); 738 } 739 740 static void 741 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 742 { 743 struct virtio_hw *hw = dev->data->dev_private; 744 struct virtio_pmd_ctrl ctrl; 745 int dlen[1]; 746 int ret; 747 748 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 749 PMD_INIT_LOG(INFO, "host does not support rx control"); 750 return; 751 } 752 753 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 754 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 755 ctrl.data[0] = 1; 756 dlen[0] = 1; 757 758 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 759 if (ret) 760 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 761 } 762 763 static void 764 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 765 { 766 struct virtio_hw *hw = dev->data->dev_private; 767 struct virtio_pmd_ctrl ctrl; 768 int dlen[1]; 769 int ret; 770 771 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 772 PMD_INIT_LOG(INFO, "host does not support rx control"); 773 return; 774 } 775 776 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 777 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 778 ctrl.data[0] = 0; 779 dlen[0] = 1; 780 781 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 782 if (ret) 783 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 784 } 785 786 static void 787 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 788 { 789 struct virtio_hw *hw = dev->data->dev_private; 790 struct virtio_pmd_ctrl ctrl; 791 int dlen[1]; 792 int ret; 793 794 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 795 PMD_INIT_LOG(INFO, "host does not support rx control"); 796 return; 797 } 798 799 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 800 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 801 ctrl.data[0] = 1; 802 dlen[0] = 1; 803 804 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 805 if (ret) 806 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 807 } 808 809 static void 810 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 811 { 812 struct virtio_hw *hw = dev->data->dev_private; 813 struct virtio_pmd_ctrl ctrl; 814 int dlen[1]; 815 int ret; 816 817 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 818 PMD_INIT_LOG(INFO, "host does not support rx control"); 819 return; 820 } 821 822 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 823 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 824 ctrl.data[0] = 0; 825 dlen[0] = 1; 826 827 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 828 if (ret) 829 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 830 } 831 832 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 833 static int 834 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 835 { 836 struct virtio_hw *hw = dev->data->dev_private; 837 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + 838 hw->vtnet_hdr_size; 839 uint32_t frame_size = mtu + ether_hdr_len; 840 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 841 842 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 843 844 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) { 845 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 846 ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 847 return -EINVAL; 848 } 849 return 0; 850 } 851 852 static int 853 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 854 { 855 struct virtio_hw *hw = dev->data->dev_private; 856 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 857 struct virtqueue *vq = rxvq->vq; 858 859 virtqueue_enable_intr(vq); 860 virtio_mb(hw->weak_barriers); 861 return 0; 862 } 863 864 static int 865 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 866 { 867 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 868 struct virtqueue *vq = rxvq->vq; 869 870 virtqueue_disable_intr(vq); 871 return 0; 872 } 873 874 /* 875 * dev_ops for virtio, bare necessities for basic operation 876 */ 877 static const struct eth_dev_ops virtio_eth_dev_ops = { 878 .dev_configure = virtio_dev_configure, 879 .dev_start = virtio_dev_start, 880 .dev_stop = virtio_dev_stop, 881 .dev_close = virtio_dev_close, 882 .promiscuous_enable = virtio_dev_promiscuous_enable, 883 .promiscuous_disable = virtio_dev_promiscuous_disable, 884 .allmulticast_enable = virtio_dev_allmulticast_enable, 885 .allmulticast_disable = virtio_dev_allmulticast_disable, 886 .mtu_set = virtio_mtu_set, 887 .dev_infos_get = virtio_dev_info_get, 888 .stats_get = virtio_dev_stats_get, 889 .xstats_get = virtio_dev_xstats_get, 890 .xstats_get_names = virtio_dev_xstats_get_names, 891 .stats_reset = virtio_dev_stats_reset, 892 .xstats_reset = virtio_dev_stats_reset, 893 .link_update = virtio_dev_link_update, 894 .vlan_offload_set = virtio_dev_vlan_offload_set, 895 .rx_queue_setup = virtio_dev_rx_queue_setup, 896 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 897 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 898 .rx_queue_release = virtio_dev_queue_release, 899 .rx_descriptor_done = virtio_dev_rx_queue_done, 900 .tx_queue_setup = virtio_dev_tx_queue_setup, 901 .tx_queue_release = virtio_dev_queue_release, 902 /* collect stats per queue */ 903 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 904 .vlan_filter_set = virtio_vlan_filter_set, 905 .mac_addr_add = virtio_mac_addr_add, 906 .mac_addr_remove = virtio_mac_addr_remove, 907 .mac_addr_set = virtio_mac_addr_set, 908 }; 909 910 static void 911 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 912 { 913 unsigned i; 914 915 for (i = 0; i < dev->data->nb_tx_queues; i++) { 916 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 917 if (txvq == NULL) 918 continue; 919 920 stats->opackets += txvq->stats.packets; 921 stats->obytes += txvq->stats.bytes; 922 stats->oerrors += txvq->stats.errors; 923 924 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 925 stats->q_opackets[i] = txvq->stats.packets; 926 stats->q_obytes[i] = txvq->stats.bytes; 927 } 928 } 929 930 for (i = 0; i < dev->data->nb_rx_queues; i++) { 931 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 932 if (rxvq == NULL) 933 continue; 934 935 stats->ipackets += rxvq->stats.packets; 936 stats->ibytes += rxvq->stats.bytes; 937 stats->ierrors += rxvq->stats.errors; 938 939 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 940 stats->q_ipackets[i] = rxvq->stats.packets; 941 stats->q_ibytes[i] = rxvq->stats.bytes; 942 } 943 } 944 945 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 946 } 947 948 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 949 struct rte_eth_xstat_name *xstats_names, 950 __rte_unused unsigned limit) 951 { 952 unsigned i; 953 unsigned count = 0; 954 unsigned t; 955 956 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 957 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 958 959 if (xstats_names != NULL) { 960 /* Note: limit checked in rte_eth_xstats_names() */ 961 962 for (i = 0; i < dev->data->nb_rx_queues; i++) { 963 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 964 if (rxvq == NULL) 965 continue; 966 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 967 snprintf(xstats_names[count].name, 968 sizeof(xstats_names[count].name), 969 "rx_q%u_%s", i, 970 rte_virtio_rxq_stat_strings[t].name); 971 count++; 972 } 973 } 974 975 for (i = 0; i < dev->data->nb_tx_queues; i++) { 976 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 977 if (txvq == NULL) 978 continue; 979 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 980 snprintf(xstats_names[count].name, 981 sizeof(xstats_names[count].name), 982 "tx_q%u_%s", i, 983 rte_virtio_txq_stat_strings[t].name); 984 count++; 985 } 986 } 987 return count; 988 } 989 return nstats; 990 } 991 992 static int 993 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 994 unsigned n) 995 { 996 unsigned i; 997 unsigned count = 0; 998 999 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1000 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1001 1002 if (n < nstats) 1003 return nstats; 1004 1005 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1006 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1007 1008 if (rxvq == NULL) 1009 continue; 1010 1011 unsigned t; 1012 1013 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1014 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1015 rte_virtio_rxq_stat_strings[t].offset); 1016 xstats[count].id = count; 1017 count++; 1018 } 1019 } 1020 1021 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1022 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1023 1024 if (txvq == NULL) 1025 continue; 1026 1027 unsigned t; 1028 1029 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1030 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1031 rte_virtio_txq_stat_strings[t].offset); 1032 xstats[count].id = count; 1033 count++; 1034 } 1035 } 1036 1037 return count; 1038 } 1039 1040 static int 1041 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1042 { 1043 virtio_update_stats(dev, stats); 1044 1045 return 0; 1046 } 1047 1048 static void 1049 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1050 { 1051 unsigned int i; 1052 1053 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1054 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1055 if (txvq == NULL) 1056 continue; 1057 1058 txvq->stats.packets = 0; 1059 txvq->stats.bytes = 0; 1060 txvq->stats.errors = 0; 1061 txvq->stats.multicast = 0; 1062 txvq->stats.broadcast = 0; 1063 memset(txvq->stats.size_bins, 0, 1064 sizeof(txvq->stats.size_bins[0]) * 8); 1065 } 1066 1067 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1068 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1069 if (rxvq == NULL) 1070 continue; 1071 1072 rxvq->stats.packets = 0; 1073 rxvq->stats.bytes = 0; 1074 rxvq->stats.errors = 0; 1075 rxvq->stats.multicast = 0; 1076 rxvq->stats.broadcast = 0; 1077 memset(rxvq->stats.size_bins, 0, 1078 sizeof(rxvq->stats.size_bins[0]) * 8); 1079 } 1080 } 1081 1082 static void 1083 virtio_set_hwaddr(struct virtio_hw *hw) 1084 { 1085 vtpci_write_dev_config(hw, 1086 offsetof(struct virtio_net_config, mac), 1087 &hw->mac_addr, ETHER_ADDR_LEN); 1088 } 1089 1090 static void 1091 virtio_get_hwaddr(struct virtio_hw *hw) 1092 { 1093 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) { 1094 vtpci_read_dev_config(hw, 1095 offsetof(struct virtio_net_config, mac), 1096 &hw->mac_addr, ETHER_ADDR_LEN); 1097 } else { 1098 eth_random_addr(&hw->mac_addr[0]); 1099 virtio_set_hwaddr(hw); 1100 } 1101 } 1102 1103 static int 1104 virtio_mac_table_set(struct virtio_hw *hw, 1105 const struct virtio_net_ctrl_mac *uc, 1106 const struct virtio_net_ctrl_mac *mc) 1107 { 1108 struct virtio_pmd_ctrl ctrl; 1109 int err, len[2]; 1110 1111 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1112 PMD_DRV_LOG(INFO, "host does not support mac table"); 1113 return -1; 1114 } 1115 1116 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1117 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1118 1119 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries); 1120 memcpy(ctrl.data, uc, len[0]); 1121 1122 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries); 1123 memcpy(ctrl.data + len[0], mc, len[1]); 1124 1125 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1126 if (err != 0) 1127 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1128 return err; 1129 } 1130 1131 static int 1132 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, 1133 uint32_t index, uint32_t vmdq __rte_unused) 1134 { 1135 struct virtio_hw *hw = dev->data->dev_private; 1136 const struct ether_addr *addrs = dev->data->mac_addrs; 1137 unsigned int i; 1138 struct virtio_net_ctrl_mac *uc, *mc; 1139 1140 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1141 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1142 return -EINVAL; 1143 } 1144 1145 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1146 uc->entries = 0; 1147 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1148 mc->entries = 0; 1149 1150 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1151 const struct ether_addr *addr 1152 = (i == index) ? mac_addr : addrs + i; 1153 struct virtio_net_ctrl_mac *tbl 1154 = is_multicast_ether_addr(addr) ? mc : uc; 1155 1156 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN); 1157 } 1158 1159 return virtio_mac_table_set(hw, uc, mc); 1160 } 1161 1162 static void 1163 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1164 { 1165 struct virtio_hw *hw = dev->data->dev_private; 1166 struct ether_addr *addrs = dev->data->mac_addrs; 1167 struct virtio_net_ctrl_mac *uc, *mc; 1168 unsigned int i; 1169 1170 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1171 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1172 return; 1173 } 1174 1175 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1176 uc->entries = 0; 1177 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1178 mc->entries = 0; 1179 1180 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1181 struct virtio_net_ctrl_mac *tbl; 1182 1183 if (i == index || is_zero_ether_addr(addrs + i)) 1184 continue; 1185 1186 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc; 1187 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN); 1188 } 1189 1190 virtio_mac_table_set(hw, uc, mc); 1191 } 1192 1193 static int 1194 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr) 1195 { 1196 struct virtio_hw *hw = dev->data->dev_private; 1197 1198 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN); 1199 1200 /* Use atomic update if available */ 1201 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1202 struct virtio_pmd_ctrl ctrl; 1203 int len = ETHER_ADDR_LEN; 1204 1205 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1206 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1207 1208 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN); 1209 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1210 } 1211 1212 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1213 return -ENOTSUP; 1214 1215 virtio_set_hwaddr(hw); 1216 return 0; 1217 } 1218 1219 static int 1220 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1221 { 1222 struct virtio_hw *hw = dev->data->dev_private; 1223 struct virtio_pmd_ctrl ctrl; 1224 int len; 1225 1226 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1227 return -ENOTSUP; 1228 1229 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1230 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1231 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1232 len = sizeof(vlan_id); 1233 1234 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1235 } 1236 1237 static int 1238 virtio_intr_enable(struct rte_eth_dev *dev) 1239 { 1240 struct virtio_hw *hw = dev->data->dev_private; 1241 1242 if (rte_intr_enable(dev->intr_handle) < 0) 1243 return -1; 1244 1245 if (!hw->virtio_user_dev) 1246 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1247 1248 return 0; 1249 } 1250 1251 static int 1252 virtio_intr_disable(struct rte_eth_dev *dev) 1253 { 1254 struct virtio_hw *hw = dev->data->dev_private; 1255 1256 if (rte_intr_disable(dev->intr_handle) < 0) 1257 return -1; 1258 1259 if (!hw->virtio_user_dev) 1260 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1261 1262 return 0; 1263 } 1264 1265 static int 1266 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1267 { 1268 uint64_t host_features; 1269 1270 /* Prepare guest_features: feature that driver wants to support */ 1271 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1272 req_features); 1273 1274 /* Read device(host) feature bits */ 1275 host_features = VTPCI_OPS(hw)->get_features(hw); 1276 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1277 host_features); 1278 1279 /* If supported, ensure MTU value is valid before acknowledging it. */ 1280 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1281 struct virtio_net_config config; 1282 1283 vtpci_read_dev_config(hw, 1284 offsetof(struct virtio_net_config, mtu), 1285 &config.mtu, sizeof(config.mtu)); 1286 1287 if (config.mtu < ETHER_MIN_MTU) 1288 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1289 } 1290 1291 /* 1292 * Negotiate features: Subset of device feature bits are written back 1293 * guest feature bits. 1294 */ 1295 hw->guest_features = req_features; 1296 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1297 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1298 hw->guest_features); 1299 1300 if (hw->modern) { 1301 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1302 PMD_INIT_LOG(ERR, 1303 "VIRTIO_F_VERSION_1 features is not enabled."); 1304 return -1; 1305 } 1306 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1307 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1308 PMD_INIT_LOG(ERR, 1309 "failed to set FEATURES_OK status!"); 1310 return -1; 1311 } 1312 } 1313 1314 hw->req_guest_features = req_features; 1315 1316 return 0; 1317 } 1318 1319 int 1320 virtio_dev_pause(struct rte_eth_dev *dev) 1321 { 1322 struct virtio_hw *hw = dev->data->dev_private; 1323 1324 rte_spinlock_lock(&hw->state_lock); 1325 1326 if (hw->started == 0) { 1327 /* Device is just stopped. */ 1328 rte_spinlock_unlock(&hw->state_lock); 1329 return -1; 1330 } 1331 hw->started = 0; 1332 /* 1333 * Prevent the worker threads from touching queues to avoid contention, 1334 * 1 ms should be enough for the ongoing Tx function to finish. 1335 */ 1336 rte_delay_ms(1); 1337 return 0; 1338 } 1339 1340 /* 1341 * Recover hw state to let the worker threads continue. 1342 */ 1343 void 1344 virtio_dev_resume(struct rte_eth_dev *dev) 1345 { 1346 struct virtio_hw *hw = dev->data->dev_private; 1347 1348 hw->started = 1; 1349 rte_spinlock_unlock(&hw->state_lock); 1350 } 1351 1352 /* 1353 * Should be called only after device is paused. 1354 */ 1355 int 1356 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1357 int nb_pkts) 1358 { 1359 struct virtio_hw *hw = dev->data->dev_private; 1360 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1361 int ret; 1362 1363 hw->inject_pkts = tx_pkts; 1364 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1365 hw->inject_pkts = NULL; 1366 1367 return ret; 1368 } 1369 1370 static void 1371 virtio_notify_peers(struct rte_eth_dev *dev) 1372 { 1373 struct virtio_hw *hw = dev->data->dev_private; 1374 struct virtnet_rx *rxvq; 1375 struct rte_mbuf *rarp_mbuf; 1376 1377 if (!dev->data->rx_queues) 1378 return; 1379 1380 rxvq = dev->data->rx_queues[0]; 1381 if (!rxvq) 1382 return; 1383 1384 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1385 (struct ether_addr *)hw->mac_addr); 1386 if (rarp_mbuf == NULL) { 1387 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1388 return; 1389 } 1390 1391 /* If virtio port just stopped, no need to send RARP */ 1392 if (virtio_dev_pause(dev) < 0) { 1393 rte_pktmbuf_free(rarp_mbuf); 1394 return; 1395 } 1396 1397 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1398 virtio_dev_resume(dev); 1399 } 1400 1401 static void 1402 virtio_ack_link_announce(struct rte_eth_dev *dev) 1403 { 1404 struct virtio_hw *hw = dev->data->dev_private; 1405 struct virtio_pmd_ctrl ctrl; 1406 1407 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1408 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1409 1410 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1411 } 1412 1413 /* 1414 * Process virtio config changed interrupt. Call the callback 1415 * if link state changed, generate gratuitous RARP packet if 1416 * the status indicates an ANNOUNCE. 1417 */ 1418 void 1419 virtio_interrupt_handler(void *param) 1420 { 1421 struct rte_eth_dev *dev = param; 1422 struct virtio_hw *hw = dev->data->dev_private; 1423 uint8_t isr; 1424 uint16_t status; 1425 1426 /* Read interrupt status which clears interrupt */ 1427 isr = vtpci_isr(hw); 1428 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1429 1430 if (virtio_intr_enable(dev) < 0) 1431 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1432 1433 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1434 if (virtio_dev_link_update(dev, 0) == 0) 1435 _rte_eth_dev_callback_process(dev, 1436 RTE_ETH_EVENT_INTR_LSC, 1437 NULL); 1438 1439 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1440 vtpci_read_dev_config(hw, 1441 offsetof(struct virtio_net_config, status), 1442 &status, sizeof(status)); 1443 if (status & VIRTIO_NET_S_ANNOUNCE) { 1444 virtio_notify_peers(dev); 1445 if (hw->cvq) 1446 virtio_ack_link_announce(dev); 1447 } 1448 } 1449 } 1450 } 1451 1452 /* set rx and tx handlers according to what is supported */ 1453 static void 1454 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1455 { 1456 struct virtio_hw *hw = eth_dev->data->dev_private; 1457 1458 if (vtpci_packed_queue(hw)) { 1459 PMD_INIT_LOG(INFO, 1460 "virtio: using packed ring %s Tx path on port %u", 1461 hw->use_inorder_tx ? "inorder" : "standard", 1462 eth_dev->data->port_id); 1463 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1464 } else { 1465 if (hw->use_inorder_tx) { 1466 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1467 eth_dev->data->port_id); 1468 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1469 } else { 1470 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1471 eth_dev->data->port_id); 1472 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1473 } 1474 } 1475 1476 if (vtpci_packed_queue(hw)) { 1477 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1478 PMD_INIT_LOG(INFO, 1479 "virtio: using packed ring mergeable buffer Rx path on port %u", 1480 eth_dev->data->port_id); 1481 eth_dev->rx_pkt_burst = 1482 &virtio_recv_mergeable_pkts_packed; 1483 } else { 1484 PMD_INIT_LOG(INFO, 1485 "virtio: using packed ring standard Rx path on port %u", 1486 eth_dev->data->port_id); 1487 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1488 } 1489 } else { 1490 if (hw->use_simple_rx) { 1491 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", 1492 eth_dev->data->port_id); 1493 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1494 } else if (hw->use_inorder_rx) { 1495 PMD_INIT_LOG(INFO, 1496 "virtio: using inorder Rx path on port %u", 1497 eth_dev->data->port_id); 1498 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1499 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1500 PMD_INIT_LOG(INFO, 1501 "virtio: using mergeable buffer Rx path on port %u", 1502 eth_dev->data->port_id); 1503 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1504 } else { 1505 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1506 eth_dev->data->port_id); 1507 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1508 } 1509 } 1510 1511 } 1512 1513 /* Only support 1:1 queue/interrupt mapping so far. 1514 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1515 * interrupt vectors (<N+1). 1516 */ 1517 static int 1518 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1519 { 1520 uint32_t i; 1521 struct virtio_hw *hw = dev->data->dev_private; 1522 1523 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1524 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1525 dev->intr_handle->intr_vec[i] = i + 1; 1526 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1527 VIRTIO_MSI_NO_VECTOR) { 1528 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1529 return -EBUSY; 1530 } 1531 } 1532 1533 return 0; 1534 } 1535 1536 static void 1537 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1538 { 1539 uint32_t i; 1540 struct virtio_hw *hw = dev->data->dev_private; 1541 1542 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1543 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1544 VTPCI_OPS(hw)->set_queue_irq(hw, 1545 hw->vqs[i * VTNET_CQ], 1546 VIRTIO_MSI_NO_VECTOR); 1547 } 1548 1549 static int 1550 virtio_configure_intr(struct rte_eth_dev *dev) 1551 { 1552 struct virtio_hw *hw = dev->data->dev_private; 1553 1554 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1555 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1556 return -ENOTSUP; 1557 } 1558 1559 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1560 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1561 return -1; 1562 } 1563 1564 if (!dev->intr_handle->intr_vec) { 1565 dev->intr_handle->intr_vec = 1566 rte_zmalloc("intr_vec", 1567 hw->max_queue_pairs * sizeof(int), 0); 1568 if (!dev->intr_handle->intr_vec) { 1569 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1570 hw->max_queue_pairs); 1571 return -ENOMEM; 1572 } 1573 } 1574 1575 /* Re-register callback to update max_intr */ 1576 rte_intr_callback_unregister(dev->intr_handle, 1577 virtio_interrupt_handler, 1578 dev); 1579 rte_intr_callback_register(dev->intr_handle, 1580 virtio_interrupt_handler, 1581 dev); 1582 1583 /* DO NOT try to remove this! This function will enable msix, or QEMU 1584 * will encounter SIGSEGV when DRIVER_OK is sent. 1585 * And for legacy devices, this should be done before queue/vec binding 1586 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1587 * (22) will be ignored. 1588 */ 1589 if (virtio_intr_enable(dev) < 0) { 1590 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1591 return -1; 1592 } 1593 1594 if (virtio_queues_bind_intr(dev) < 0) { 1595 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1596 return -1; 1597 } 1598 1599 return 0; 1600 } 1601 1602 /* reset device and renegotiate features if needed */ 1603 static int 1604 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1605 { 1606 struct virtio_hw *hw = eth_dev->data->dev_private; 1607 struct virtio_net_config *config; 1608 struct virtio_net_config local_config; 1609 struct rte_pci_device *pci_dev = NULL; 1610 int ret; 1611 1612 /* Reset the device although not necessary at startup */ 1613 vtpci_reset(hw); 1614 1615 if (hw->vqs) { 1616 virtio_dev_free_mbufs(eth_dev); 1617 virtio_free_queues(hw); 1618 } 1619 1620 /* Tell the host we've noticed this device. */ 1621 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1622 1623 /* Tell the host we've known how to drive the device. */ 1624 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1625 if (virtio_negotiate_features(hw, req_features) < 0) 1626 return -1; 1627 1628 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1629 1630 if (!hw->virtio_user_dev) { 1631 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1632 rte_eth_copy_pci_info(eth_dev, pci_dev); 1633 } 1634 1635 /* If host does not support both status and MSI-X then disable LSC */ 1636 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1637 hw->use_msix != VIRTIO_MSIX_NONE) 1638 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1639 else 1640 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1641 1642 /* Setting up rx_header size for the device */ 1643 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1644 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1645 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1646 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1647 else 1648 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1649 1650 /* Copy the permanent MAC address to: virtio_hw */ 1651 virtio_get_hwaddr(hw); 1652 ether_addr_copy((struct ether_addr *) hw->mac_addr, 1653 ð_dev->data->mac_addrs[0]); 1654 PMD_INIT_LOG(DEBUG, 1655 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1656 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1657 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1658 1659 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1660 config = &local_config; 1661 1662 vtpci_read_dev_config(hw, 1663 offsetof(struct virtio_net_config, mac), 1664 &config->mac, sizeof(config->mac)); 1665 1666 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1667 vtpci_read_dev_config(hw, 1668 offsetof(struct virtio_net_config, status), 1669 &config->status, sizeof(config->status)); 1670 } else { 1671 PMD_INIT_LOG(DEBUG, 1672 "VIRTIO_NET_F_STATUS is not supported"); 1673 config->status = 0; 1674 } 1675 1676 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1677 vtpci_read_dev_config(hw, 1678 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1679 &config->max_virtqueue_pairs, 1680 sizeof(config->max_virtqueue_pairs)); 1681 } else { 1682 PMD_INIT_LOG(DEBUG, 1683 "VIRTIO_NET_F_MQ is not supported"); 1684 config->max_virtqueue_pairs = 1; 1685 } 1686 1687 hw->max_queue_pairs = config->max_virtqueue_pairs; 1688 1689 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1690 vtpci_read_dev_config(hw, 1691 offsetof(struct virtio_net_config, mtu), 1692 &config->mtu, 1693 sizeof(config->mtu)); 1694 1695 /* 1696 * MTU value has already been checked at negotiation 1697 * time, but check again in case it has changed since 1698 * then, which should not happen. 1699 */ 1700 if (config->mtu < ETHER_MIN_MTU) { 1701 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1702 config->mtu); 1703 return -1; 1704 } 1705 1706 hw->max_mtu = config->mtu; 1707 /* Set initial MTU to maximum one supported by vhost */ 1708 eth_dev->data->mtu = config->mtu; 1709 1710 } else { 1711 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1712 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1713 } 1714 1715 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1716 config->max_virtqueue_pairs); 1717 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1718 PMD_INIT_LOG(DEBUG, 1719 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1720 config->mac[0], config->mac[1], 1721 config->mac[2], config->mac[3], 1722 config->mac[4], config->mac[5]); 1723 } else { 1724 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1725 hw->max_queue_pairs = 1; 1726 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1727 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1728 } 1729 1730 ret = virtio_alloc_queues(eth_dev); 1731 if (ret < 0) 1732 return ret; 1733 1734 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1735 if (virtio_configure_intr(eth_dev) < 0) { 1736 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1737 return -1; 1738 } 1739 } 1740 1741 vtpci_reinit_complete(hw); 1742 1743 if (pci_dev) 1744 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1745 eth_dev->data->port_id, pci_dev->id.vendor_id, 1746 pci_dev->id.device_id); 1747 1748 return 0; 1749 } 1750 1751 /* 1752 * Remap the PCI device again (IO port map for legacy device and 1753 * memory map for modern device), so that the secondary process 1754 * could have the PCI initiated correctly. 1755 */ 1756 static int 1757 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1758 { 1759 if (hw->modern) { 1760 /* 1761 * We don't have to re-parse the PCI config space, since 1762 * rte_pci_map_device() makes sure the mapped address 1763 * in secondary process would equal to the one mapped in 1764 * the primary process: error will be returned if that 1765 * requirement is not met. 1766 * 1767 * That said, we could simply reuse all cap pointers 1768 * (such as dev_cfg, common_cfg, etc.) parsed from the 1769 * primary process, which is stored in shared memory. 1770 */ 1771 if (rte_pci_map_device(pci_dev)) { 1772 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1773 return -1; 1774 } 1775 } else { 1776 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1777 return -1; 1778 } 1779 1780 return 0; 1781 } 1782 1783 static void 1784 virtio_set_vtpci_ops(struct virtio_hw *hw) 1785 { 1786 #ifdef RTE_VIRTIO_USER 1787 if (hw->virtio_user_dev) 1788 VTPCI_OPS(hw) = &virtio_user_ops; 1789 else 1790 #endif 1791 if (hw->modern) 1792 VTPCI_OPS(hw) = &modern_ops; 1793 else 1794 VTPCI_OPS(hw) = &legacy_ops; 1795 } 1796 1797 /* 1798 * This function is based on probe() function in virtio_pci.c 1799 * It returns 0 on success. 1800 */ 1801 int 1802 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1803 { 1804 struct virtio_hw *hw = eth_dev->data->dev_private; 1805 int ret; 1806 1807 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); 1808 1809 eth_dev->dev_ops = &virtio_eth_dev_ops; 1810 1811 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1812 if (!hw->virtio_user_dev) { 1813 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1814 if (ret) 1815 return ret; 1816 } 1817 1818 virtio_set_vtpci_ops(hw); 1819 set_rxtx_funcs(eth_dev); 1820 1821 return 0; 1822 } 1823 1824 /* Allocate memory for storing MAC addresses */ 1825 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0); 1826 if (eth_dev->data->mac_addrs == NULL) { 1827 PMD_INIT_LOG(ERR, 1828 "Failed to allocate %d bytes needed to store MAC addresses", 1829 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN); 1830 return -ENOMEM; 1831 } 1832 1833 hw->port_id = eth_dev->data->port_id; 1834 /* For virtio_user case the hw->virtio_user_dev is populated by 1835 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1836 */ 1837 if (!hw->virtio_user_dev) { 1838 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1839 if (ret) 1840 goto out; 1841 } 1842 1843 /* reset device and negotiate default features */ 1844 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1845 if (ret < 0) 1846 goto out; 1847 1848 return 0; 1849 1850 out: 1851 rte_free(eth_dev->data->mac_addrs); 1852 return ret; 1853 } 1854 1855 static int 1856 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1857 { 1858 PMD_INIT_FUNC_TRACE(); 1859 1860 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1861 return 0; 1862 1863 virtio_dev_stop(eth_dev); 1864 virtio_dev_close(eth_dev); 1865 1866 eth_dev->dev_ops = NULL; 1867 eth_dev->tx_pkt_burst = NULL; 1868 eth_dev->rx_pkt_burst = NULL; 1869 1870 if (eth_dev->device) 1871 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1872 1873 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 1874 1875 return 0; 1876 } 1877 1878 static int vdpa_check_handler(__rte_unused const char *key, 1879 const char *value, __rte_unused void *opaque) 1880 { 1881 if (strcmp(value, "1")) 1882 return -1; 1883 1884 return 0; 1885 } 1886 1887 static int 1888 vdpa_mode_selected(struct rte_devargs *devargs) 1889 { 1890 struct rte_kvargs *kvlist; 1891 const char *key = "vdpa"; 1892 int ret = 0; 1893 1894 if (devargs == NULL) 1895 return 0; 1896 1897 kvlist = rte_kvargs_parse(devargs->args, NULL); 1898 if (kvlist == NULL) 1899 return 0; 1900 1901 if (!rte_kvargs_count(kvlist, key)) 1902 goto exit; 1903 1904 /* vdpa mode selected when there's a key-value pair: vdpa=1 */ 1905 if (rte_kvargs_process(kvlist, key, 1906 vdpa_check_handler, NULL) < 0) { 1907 goto exit; 1908 } 1909 ret = 1; 1910 1911 exit: 1912 rte_kvargs_free(kvlist); 1913 return ret; 1914 } 1915 1916 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1917 struct rte_pci_device *pci_dev) 1918 { 1919 if (rte_eal_iopl_init() != 0) { 1920 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); 1921 return 1; 1922 } 1923 1924 /* virtio pmd skips probe if device needs to work in vdpa mode */ 1925 if (vdpa_mode_selected(pci_dev->device.devargs)) 1926 return 1; 1927 1928 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 1929 eth_virtio_dev_init); 1930 } 1931 1932 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 1933 { 1934 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 1935 } 1936 1937 static struct rte_pci_driver rte_virtio_pmd = { 1938 .driver = { 1939 .name = "net_virtio", 1940 }, 1941 .id_table = pci_id_virtio_map, 1942 .drv_flags = 0, 1943 .probe = eth_virtio_pci_probe, 1944 .remove = eth_virtio_pci_remove, 1945 }; 1946 1947 RTE_INIT(rte_virtio_pmd_init) 1948 { 1949 rte_eal_iopl_init(); 1950 rte_pci_register(&rte_virtio_pmd); 1951 } 1952 1953 static bool 1954 rx_offload_enabled(struct virtio_hw *hw) 1955 { 1956 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 1957 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 1958 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 1959 } 1960 1961 static bool 1962 tx_offload_enabled(struct virtio_hw *hw) 1963 { 1964 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 1965 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 1966 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 1967 } 1968 1969 /* 1970 * Configure virtio device 1971 * It returns 0 on success. 1972 */ 1973 static int 1974 virtio_dev_configure(struct rte_eth_dev *dev) 1975 { 1976 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 1977 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 1978 struct virtio_hw *hw = dev->data->dev_private; 1979 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + 1980 hw->vtnet_hdr_size; 1981 uint64_t rx_offloads = rxmode->offloads; 1982 uint64_t tx_offloads = txmode->offloads; 1983 uint64_t req_features; 1984 int ret; 1985 1986 PMD_INIT_LOG(DEBUG, "configure"); 1987 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 1988 1989 if (dev->data->dev_conf.intr_conf.rxq) { 1990 ret = virtio_init_device(dev, hw->req_guest_features); 1991 if (ret < 0) 1992 return ret; 1993 } 1994 1995 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 1996 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1997 1998 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 1999 DEV_RX_OFFLOAD_TCP_CKSUM)) 2000 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2001 2002 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2003 req_features |= 2004 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2005 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2006 2007 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2008 DEV_TX_OFFLOAD_TCP_CKSUM)) 2009 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2010 2011 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2012 req_features |= 2013 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2014 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2015 2016 /* if request features changed, reinit the device */ 2017 if (req_features != hw->req_guest_features) { 2018 ret = virtio_init_device(dev, req_features); 2019 if (ret < 0) 2020 return ret; 2021 } 2022 2023 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2024 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2025 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2026 PMD_DRV_LOG(ERR, 2027 "rx checksum not available on this host"); 2028 return -ENOTSUP; 2029 } 2030 2031 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2032 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2033 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2034 PMD_DRV_LOG(ERR, 2035 "Large Receive Offload not available on this host"); 2036 return -ENOTSUP; 2037 } 2038 2039 /* start control queue */ 2040 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2041 virtio_dev_cq_start(dev); 2042 2043 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2044 hw->vlan_strip = 1; 2045 2046 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2047 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2048 PMD_DRV_LOG(ERR, 2049 "vlan filtering not available on this host"); 2050 return -ENOTSUP; 2051 } 2052 2053 hw->has_tx_offload = tx_offload_enabled(hw); 2054 hw->has_rx_offload = rx_offload_enabled(hw); 2055 2056 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2057 /* Enable vector (0) for Link State Intrerrupt */ 2058 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2059 VIRTIO_MSI_NO_VECTOR) { 2060 PMD_DRV_LOG(ERR, "failed to set config vector"); 2061 return -EBUSY; 2062 } 2063 2064 rte_spinlock_init(&hw->state_lock); 2065 2066 hw->use_simple_rx = 1; 2067 2068 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2069 hw->use_inorder_tx = 1; 2070 hw->use_inorder_rx = 1; 2071 hw->use_simple_rx = 0; 2072 } 2073 2074 if (vtpci_packed_queue(hw)) { 2075 hw->use_simple_rx = 0; 2076 hw->use_inorder_rx = 0; 2077 } 2078 2079 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2080 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2081 hw->use_simple_rx = 0; 2082 } 2083 #endif 2084 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2085 hw->use_simple_rx = 0; 2086 } 2087 2088 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2089 DEV_RX_OFFLOAD_TCP_CKSUM | 2090 DEV_RX_OFFLOAD_TCP_LRO | 2091 DEV_RX_OFFLOAD_VLAN_STRIP)) 2092 hw->use_simple_rx = 0; 2093 2094 hw->opened = true; 2095 2096 return 0; 2097 } 2098 2099 2100 static int 2101 virtio_dev_start(struct rte_eth_dev *dev) 2102 { 2103 uint16_t nb_queues, i; 2104 struct virtnet_rx *rxvq; 2105 struct virtnet_tx *txvq __rte_unused; 2106 struct virtio_hw *hw = dev->data->dev_private; 2107 int ret; 2108 2109 /* Finish the initialization of the queues */ 2110 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2111 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2112 if (ret < 0) 2113 return ret; 2114 } 2115 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2116 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2117 if (ret < 0) 2118 return ret; 2119 } 2120 2121 /* check if lsc interrupt feature is enabled */ 2122 if (dev->data->dev_conf.intr_conf.lsc) { 2123 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2124 PMD_DRV_LOG(ERR, "link status not supported by host"); 2125 return -ENOTSUP; 2126 } 2127 } 2128 2129 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2130 * in device configure, but it could be unmapped when device is 2131 * stopped. 2132 */ 2133 if (dev->data->dev_conf.intr_conf.lsc || 2134 dev->data->dev_conf.intr_conf.rxq) { 2135 virtio_intr_disable(dev); 2136 2137 /* Setup interrupt callback */ 2138 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2139 rte_intr_callback_register(dev->intr_handle, 2140 virtio_interrupt_handler, 2141 dev); 2142 2143 if (virtio_intr_enable(dev) < 0) { 2144 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2145 return -EIO; 2146 } 2147 } 2148 2149 /*Notify the backend 2150 *Otherwise the tap backend might already stop its queue due to fullness. 2151 *vhost backend will have no chance to be waked up 2152 */ 2153 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2154 if (hw->max_queue_pairs > 1) { 2155 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2156 return -EINVAL; 2157 } 2158 2159 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2160 2161 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2162 rxvq = dev->data->rx_queues[i]; 2163 /* Flush the old packets */ 2164 virtqueue_rxvq_flush(rxvq->vq); 2165 virtqueue_notify(rxvq->vq); 2166 } 2167 2168 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2169 txvq = dev->data->tx_queues[i]; 2170 virtqueue_notify(txvq->vq); 2171 } 2172 2173 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2174 2175 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2176 rxvq = dev->data->rx_queues[i]; 2177 VIRTQUEUE_DUMP(rxvq->vq); 2178 } 2179 2180 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2181 txvq = dev->data->tx_queues[i]; 2182 VIRTQUEUE_DUMP(txvq->vq); 2183 } 2184 2185 set_rxtx_funcs(dev); 2186 hw->started = true; 2187 2188 /* Initialize Link state */ 2189 virtio_dev_link_update(dev, 0); 2190 2191 return 0; 2192 } 2193 2194 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2195 { 2196 struct virtio_hw *hw = dev->data->dev_private; 2197 uint16_t nr_vq = virtio_get_nr_vq(hw); 2198 const char *type __rte_unused; 2199 unsigned int i, mbuf_num = 0; 2200 struct virtqueue *vq; 2201 struct rte_mbuf *buf; 2202 int queue_type; 2203 2204 if (hw->vqs == NULL) 2205 return; 2206 2207 for (i = 0; i < nr_vq; i++) { 2208 vq = hw->vqs[i]; 2209 if (!vq) 2210 continue; 2211 2212 queue_type = virtio_get_queue_type(hw, i); 2213 if (queue_type == VTNET_RQ) 2214 type = "rxq"; 2215 else if (queue_type == VTNET_TQ) 2216 type = "txq"; 2217 else 2218 continue; 2219 2220 PMD_INIT_LOG(DEBUG, 2221 "Before freeing %s[%d] used and unused buf", 2222 type, i); 2223 VIRTQUEUE_DUMP(vq); 2224 2225 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2226 rte_pktmbuf_free(buf); 2227 mbuf_num++; 2228 } 2229 2230 PMD_INIT_LOG(DEBUG, 2231 "After freeing %s[%d] used and unused buf", 2232 type, i); 2233 VIRTQUEUE_DUMP(vq); 2234 } 2235 2236 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2237 } 2238 2239 /* 2240 * Stop device: disable interrupt and mark link down 2241 */ 2242 static void 2243 virtio_dev_stop(struct rte_eth_dev *dev) 2244 { 2245 struct virtio_hw *hw = dev->data->dev_private; 2246 struct rte_eth_link link; 2247 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2248 2249 PMD_INIT_LOG(DEBUG, "stop"); 2250 2251 rte_spinlock_lock(&hw->state_lock); 2252 if (!hw->started) 2253 goto out_unlock; 2254 hw->started = false; 2255 2256 if (intr_conf->lsc || intr_conf->rxq) { 2257 virtio_intr_disable(dev); 2258 2259 /* Reset interrupt callback */ 2260 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2261 rte_intr_callback_unregister(dev->intr_handle, 2262 virtio_interrupt_handler, 2263 dev); 2264 } 2265 } 2266 2267 memset(&link, 0, sizeof(link)); 2268 rte_eth_linkstatus_set(dev, &link); 2269 out_unlock: 2270 rte_spinlock_unlock(&hw->state_lock); 2271 } 2272 2273 static int 2274 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2275 { 2276 struct rte_eth_link link; 2277 uint16_t status; 2278 struct virtio_hw *hw = dev->data->dev_private; 2279 2280 memset(&link, 0, sizeof(link)); 2281 link.link_duplex = ETH_LINK_FULL_DUPLEX; 2282 link.link_speed = ETH_SPEED_NUM_10G; 2283 link.link_autoneg = ETH_LINK_FIXED; 2284 2285 if (!hw->started) { 2286 link.link_status = ETH_LINK_DOWN; 2287 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2288 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2289 vtpci_read_dev_config(hw, 2290 offsetof(struct virtio_net_config, status), 2291 &status, sizeof(status)); 2292 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2293 link.link_status = ETH_LINK_DOWN; 2294 PMD_INIT_LOG(DEBUG, "Port %d is down", 2295 dev->data->port_id); 2296 } else { 2297 link.link_status = ETH_LINK_UP; 2298 PMD_INIT_LOG(DEBUG, "Port %d is up", 2299 dev->data->port_id); 2300 } 2301 } else { 2302 link.link_status = ETH_LINK_UP; 2303 } 2304 2305 return rte_eth_linkstatus_set(dev, &link); 2306 } 2307 2308 static int 2309 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2310 { 2311 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2312 struct virtio_hw *hw = dev->data->dev_private; 2313 uint64_t offloads = rxmode->offloads; 2314 2315 if (mask & ETH_VLAN_FILTER_MASK) { 2316 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2317 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2318 2319 PMD_DRV_LOG(NOTICE, 2320 "vlan filtering not available on this host"); 2321 2322 return -ENOTSUP; 2323 } 2324 } 2325 2326 if (mask & ETH_VLAN_STRIP_MASK) 2327 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2328 2329 return 0; 2330 } 2331 2332 static void 2333 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2334 { 2335 uint64_t tso_mask, host_features; 2336 struct virtio_hw *hw = dev->data->dev_private; 2337 2338 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ 2339 2340 dev_info->max_rx_queues = 2341 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2342 dev_info->max_tx_queues = 2343 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2344 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2345 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2346 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2347 2348 host_features = VTPCI_OPS(hw)->get_features(hw); 2349 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2350 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2351 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2352 dev_info->rx_offload_capa |= 2353 DEV_RX_OFFLOAD_TCP_CKSUM | 2354 DEV_RX_OFFLOAD_UDP_CKSUM; 2355 } 2356 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2357 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2358 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2359 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2360 if ((host_features & tso_mask) == tso_mask) 2361 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2362 2363 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2364 DEV_TX_OFFLOAD_VLAN_INSERT; 2365 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2366 dev_info->tx_offload_capa |= 2367 DEV_TX_OFFLOAD_UDP_CKSUM | 2368 DEV_TX_OFFLOAD_TCP_CKSUM; 2369 } 2370 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2371 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2372 if ((host_features & tso_mask) == tso_mask) 2373 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2374 } 2375 2376 /* 2377 * It enables testpmd to collect per queue stats. 2378 */ 2379 static int 2380 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2381 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2382 __rte_unused uint8_t is_rx) 2383 { 2384 return 0; 2385 } 2386 2387 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2388 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2389 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2390 2391 RTE_INIT(virtio_init_log) 2392 { 2393 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2394 if (virtio_logtype_init >= 0) 2395 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2396 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2397 if (virtio_logtype_driver >= 0) 2398 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2399 } 2400