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 ^= VRING_PACKED_DESC_F_AVAIL_USED; 172 } 173 174 for (k = 0; k < pkt_num; k++) { 175 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 176 + sizeof(struct virtio_net_ctrl_hdr) 177 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 178 desc[vq->vq_avail_idx].len = dlen[k]; 179 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT | 180 vq->vq_packed.cached_flags; 181 sum += dlen[k]; 182 vq->vq_free_cnt--; 183 nb_descs++; 184 if (++vq->vq_avail_idx >= vq->vq_nentries) { 185 vq->vq_avail_idx -= vq->vq_nentries; 186 vq->vq_packed.cached_flags ^= 187 VRING_PACKED_DESC_F_AVAIL_USED; 188 } 189 } 190 191 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 192 + sizeof(struct virtio_net_ctrl_hdr); 193 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 194 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE | 195 vq->vq_packed.cached_flags; 196 vq->vq_free_cnt--; 197 nb_descs++; 198 if (++vq->vq_avail_idx >= vq->vq_nentries) { 199 vq->vq_avail_idx -= vq->vq_nentries; 200 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 201 } 202 203 virtio_wmb(vq->hw->weak_barriers); 204 desc[head].flags = VRING_DESC_F_NEXT | flags; 205 206 virtio_wmb(vq->hw->weak_barriers); 207 virtqueue_notify(vq); 208 209 /* wait for used descriptors in virtqueue */ 210 while (!desc_is_used(&desc[head], vq)) 211 usleep(100); 212 213 virtio_rmb(vq->hw->weak_barriers); 214 215 /* now get used descriptors */ 216 vq->vq_free_cnt += nb_descs; 217 vq->vq_used_cons_idx += nb_descs; 218 if (vq->vq_used_cons_idx >= vq->vq_nentries) { 219 vq->vq_used_cons_idx -= vq->vq_nentries; 220 vq->vq_packed.used_wrap_counter ^= 1; 221 } 222 223 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n" 224 "vq->vq_avail_idx=%d\n" 225 "vq->vq_used_cons_idx=%d\n" 226 "vq->vq_packed.cached_flags=0x%x\n" 227 "vq->vq_packed.used_wrap_counter=%d\n", 228 vq->vq_free_cnt, 229 vq->vq_avail_idx, 230 vq->vq_used_cons_idx, 231 vq->vq_packed.cached_flags, 232 vq->vq_packed.used_wrap_counter); 233 234 result = cvq->virtio_net_hdr_mz->addr; 235 return result; 236 } 237 238 static struct virtio_pmd_ctrl * 239 virtio_send_command_split(struct virtnet_ctl *cvq, 240 struct virtio_pmd_ctrl *ctrl, 241 int *dlen, int pkt_num) 242 { 243 struct virtio_pmd_ctrl *result; 244 struct virtqueue *vq = cvq->vq; 245 uint32_t head, i; 246 int k, sum = 0; 247 248 head = vq->vq_desc_head_idx; 249 250 /* 251 * Format is enforced in qemu code: 252 * One TX packet for header; 253 * At least one TX packet per argument; 254 * One RX packet for ACK. 255 */ 256 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT; 257 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem; 258 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 259 vq->vq_free_cnt--; 260 i = vq->vq_split.ring.desc[head].next; 261 262 for (k = 0; k < pkt_num; k++) { 263 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT; 264 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 265 + sizeof(struct virtio_net_ctrl_hdr) 266 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 267 vq->vq_split.ring.desc[i].len = dlen[k]; 268 sum += dlen[k]; 269 vq->vq_free_cnt--; 270 i = vq->vq_split.ring.desc[i].next; 271 } 272 273 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE; 274 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 275 + sizeof(struct virtio_net_ctrl_hdr); 276 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status); 277 vq->vq_free_cnt--; 278 279 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next; 280 281 vq_update_avail_ring(vq, head); 282 vq_update_avail_idx(vq); 283 284 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 285 286 virtqueue_notify(vq); 287 288 rte_rmb(); 289 while (VIRTQUEUE_NUSED(vq) == 0) { 290 rte_rmb(); 291 usleep(100); 292 } 293 294 while (VIRTQUEUE_NUSED(vq)) { 295 uint32_t idx, desc_idx, used_idx; 296 struct vring_used_elem *uep; 297 298 used_idx = (uint32_t)(vq->vq_used_cons_idx 299 & (vq->vq_nentries - 1)); 300 uep = &vq->vq_split.ring.used->ring[used_idx]; 301 idx = (uint32_t) uep->id; 302 desc_idx = idx; 303 304 while (vq->vq_split.ring.desc[desc_idx].flags & 305 VRING_DESC_F_NEXT) { 306 desc_idx = vq->vq_split.ring.desc[desc_idx].next; 307 vq->vq_free_cnt++; 308 } 309 310 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx; 311 vq->vq_desc_head_idx = idx; 312 313 vq->vq_used_cons_idx++; 314 vq->vq_free_cnt++; 315 } 316 317 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 318 vq->vq_free_cnt, vq->vq_desc_head_idx); 319 320 result = cvq->virtio_net_hdr_mz->addr; 321 return result; 322 } 323 324 static int 325 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 326 int *dlen, int pkt_num) 327 { 328 virtio_net_ctrl_ack status = ~0; 329 struct virtio_pmd_ctrl *result; 330 struct virtqueue *vq; 331 332 ctrl->status = status; 333 334 if (!cvq || !cvq->vq) { 335 PMD_INIT_LOG(ERR, "Control queue is not supported."); 336 return -1; 337 } 338 339 rte_spinlock_lock(&cvq->lock); 340 vq = cvq->vq; 341 342 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 343 "vq->hw->cvq = %p vq = %p", 344 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 345 346 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 347 rte_spinlock_unlock(&cvq->lock); 348 return -1; 349 } 350 351 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 352 sizeof(struct virtio_pmd_ctrl)); 353 354 if (vtpci_packed_queue(vq->hw)) 355 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num); 356 else 357 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num); 358 359 rte_spinlock_unlock(&cvq->lock); 360 return result->status; 361 } 362 363 static int 364 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 365 { 366 struct virtio_hw *hw = dev->data->dev_private; 367 struct virtio_pmd_ctrl ctrl; 368 int dlen[1]; 369 int ret; 370 371 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 372 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 373 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 374 375 dlen[0] = sizeof(uint16_t); 376 377 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 378 if (ret) { 379 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 380 "failed, this is too late now..."); 381 return -EINVAL; 382 } 383 384 return 0; 385 } 386 387 static void 388 virtio_dev_queue_release(void *queue __rte_unused) 389 { 390 /* do nothing */ 391 } 392 393 static uint16_t 394 virtio_get_nr_vq(struct virtio_hw *hw) 395 { 396 uint16_t nr_vq = hw->max_queue_pairs * 2; 397 398 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 399 nr_vq += 1; 400 401 return nr_vq; 402 } 403 404 static void 405 virtio_init_vring(struct virtqueue *vq) 406 { 407 int size = vq->vq_nentries; 408 uint8_t *ring_mem = vq->vq_ring_virt_mem; 409 410 PMD_INIT_FUNC_TRACE(); 411 412 memset(ring_mem, 0, vq->vq_ring_size); 413 414 vq->vq_used_cons_idx = 0; 415 vq->vq_desc_head_idx = 0; 416 vq->vq_avail_idx = 0; 417 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 418 vq->vq_free_cnt = vq->vq_nentries; 419 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 420 if (vtpci_packed_queue(vq->hw)) { 421 vring_init_packed(&vq->vq_packed.ring, ring_mem, 422 VIRTIO_PCI_VRING_ALIGN, size); 423 vring_desc_init_packed(vq, size); 424 } else { 425 struct vring *vr = &vq->vq_split.ring; 426 427 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size); 428 vring_desc_init_split(vr->desc, size); 429 } 430 /* 431 * Disable device(host) interrupting guest 432 */ 433 virtqueue_disable_intr(vq); 434 } 435 436 static int 437 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) 438 { 439 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 440 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 441 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 442 unsigned int vq_size, size; 443 struct virtio_hw *hw = dev->data->dev_private; 444 struct virtnet_rx *rxvq = NULL; 445 struct virtnet_tx *txvq = NULL; 446 struct virtnet_ctl *cvq = NULL; 447 struct virtqueue *vq; 448 size_t sz_hdr_mz = 0; 449 void *sw_ring = NULL; 450 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx); 451 int ret; 452 int numa_node = dev->device->numa_node; 453 454 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 455 vtpci_queue_idx, numa_node); 456 457 /* 458 * Read the virtqueue size from the Queue Size field 459 * Always power of 2 and if 0 virtqueue does not exist 460 */ 461 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx); 462 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 463 if (vq_size == 0) { 464 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 465 return -EINVAL; 466 } 467 468 if (!rte_is_power_of_2(vq_size)) { 469 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2"); 470 return -EINVAL; 471 } 472 473 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 474 dev->data->port_id, vtpci_queue_idx); 475 476 size = RTE_ALIGN_CEIL(sizeof(*vq) + 477 vq_size * sizeof(struct vq_desc_extra), 478 RTE_CACHE_LINE_SIZE); 479 if (queue_type == VTNET_TQ) { 480 /* 481 * For each xmit packet, allocate a virtio_net_hdr 482 * and indirect ring elements 483 */ 484 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 485 } else if (queue_type == VTNET_CQ) { 486 /* Allocate a page for control vq command, data and status */ 487 sz_hdr_mz = PAGE_SIZE; 488 } 489 490 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 491 numa_node); 492 if (vq == NULL) { 493 PMD_INIT_LOG(ERR, "can not allocate vq"); 494 return -ENOMEM; 495 } 496 hw->vqs[vtpci_queue_idx] = vq; 497 498 vq->hw = hw; 499 vq->vq_queue_index = vtpci_queue_idx; 500 vq->vq_nentries = vq_size; 501 if (vtpci_packed_queue(hw)) { 502 vq->vq_packed.used_wrap_counter = 1; 503 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL; 504 vq->vq_packed.event_flags_shadow = 0; 505 if (queue_type == VTNET_RQ) 506 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE; 507 } 508 509 /* 510 * Reserve a memzone for vring elements 511 */ 512 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN); 513 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN); 514 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 515 size, vq->vq_ring_size); 516 517 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 518 numa_node, RTE_MEMZONE_IOVA_CONTIG, 519 VIRTIO_PCI_VRING_ALIGN); 520 if (mz == NULL) { 521 if (rte_errno == EEXIST) 522 mz = rte_memzone_lookup(vq_name); 523 if (mz == NULL) { 524 ret = -ENOMEM; 525 goto fail_q_alloc; 526 } 527 } 528 529 memset(mz->addr, 0, mz->len); 530 531 vq->vq_ring_mem = mz->iova; 532 vq->vq_ring_virt_mem = mz->addr; 533 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 534 (uint64_t)mz->iova); 535 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 536 (uint64_t)(uintptr_t)mz->addr); 537 538 virtio_init_vring(vq); 539 540 if (sz_hdr_mz) { 541 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 542 dev->data->port_id, vtpci_queue_idx); 543 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 544 numa_node, RTE_MEMZONE_IOVA_CONTIG, 545 RTE_CACHE_LINE_SIZE); 546 if (hdr_mz == NULL) { 547 if (rte_errno == EEXIST) 548 hdr_mz = rte_memzone_lookup(vq_hdr_name); 549 if (hdr_mz == NULL) { 550 ret = -ENOMEM; 551 goto fail_q_alloc; 552 } 553 } 554 } 555 556 if (queue_type == VTNET_RQ) { 557 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 558 sizeof(vq->sw_ring[0]); 559 560 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 561 RTE_CACHE_LINE_SIZE, numa_node); 562 if (!sw_ring) { 563 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 564 ret = -ENOMEM; 565 goto fail_q_alloc; 566 } 567 568 vq->sw_ring = sw_ring; 569 rxvq = &vq->rxq; 570 rxvq->vq = vq; 571 rxvq->port_id = dev->data->port_id; 572 rxvq->mz = mz; 573 } else if (queue_type == VTNET_TQ) { 574 txvq = &vq->txq; 575 txvq->vq = vq; 576 txvq->port_id = dev->data->port_id; 577 txvq->mz = mz; 578 txvq->virtio_net_hdr_mz = hdr_mz; 579 txvq->virtio_net_hdr_mem = hdr_mz->iova; 580 } else if (queue_type == VTNET_CQ) { 581 cvq = &vq->cq; 582 cvq->vq = vq; 583 cvq->mz = mz; 584 cvq->virtio_net_hdr_mz = hdr_mz; 585 cvq->virtio_net_hdr_mem = hdr_mz->iova; 586 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE); 587 588 hw->cvq = cvq; 589 } 590 591 /* For virtio_user case (that is when hw->dev is NULL), we use 592 * virtual address. And we need properly set _offset_, please see 593 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information. 594 */ 595 if (!hw->virtio_user_dev) 596 vq->offset = offsetof(struct rte_mbuf, buf_iova); 597 else { 598 vq->vq_ring_mem = (uintptr_t)mz->addr; 599 vq->offset = offsetof(struct rte_mbuf, buf_addr); 600 if (queue_type == VTNET_TQ) 601 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 602 else if (queue_type == VTNET_CQ) 603 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 604 } 605 606 if (queue_type == VTNET_TQ) { 607 struct virtio_tx_region *txr; 608 unsigned int i; 609 610 txr = hdr_mz->addr; 611 memset(txr, 0, vq_size * sizeof(*txr)); 612 for (i = 0; i < vq_size; i++) { 613 struct vring_desc *start_dp = txr[i].tx_indir; 614 615 /* first indirect descriptor is always the tx header */ 616 if (!vtpci_packed_queue(hw)) { 617 vring_desc_init_split(start_dp, 618 RTE_DIM(txr[i].tx_indir)); 619 start_dp->addr = txvq->virtio_net_hdr_mem 620 + i * sizeof(*txr) 621 + offsetof(struct virtio_tx_region, 622 tx_hdr); 623 start_dp->len = hw->vtnet_hdr_size; 624 start_dp->flags = VRING_DESC_F_NEXT; 625 } 626 } 627 } 628 629 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) { 630 PMD_INIT_LOG(ERR, "setup_queue failed"); 631 return -EINVAL; 632 } 633 634 return 0; 635 636 fail_q_alloc: 637 rte_free(sw_ring); 638 rte_memzone_free(hdr_mz); 639 rte_memzone_free(mz); 640 rte_free(vq); 641 642 return ret; 643 } 644 645 static void 646 virtio_free_queues(struct virtio_hw *hw) 647 { 648 uint16_t nr_vq = virtio_get_nr_vq(hw); 649 struct virtqueue *vq; 650 int queue_type; 651 uint16_t i; 652 653 if (hw->vqs == NULL) 654 return; 655 656 for (i = 0; i < nr_vq; i++) { 657 vq = hw->vqs[i]; 658 if (!vq) 659 continue; 660 661 queue_type = virtio_get_queue_type(hw, i); 662 if (queue_type == VTNET_RQ) { 663 rte_free(vq->sw_ring); 664 rte_memzone_free(vq->rxq.mz); 665 } else if (queue_type == VTNET_TQ) { 666 rte_memzone_free(vq->txq.mz); 667 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 668 } else { 669 rte_memzone_free(vq->cq.mz); 670 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 671 } 672 673 rte_free(vq); 674 hw->vqs[i] = NULL; 675 } 676 677 rte_free(hw->vqs); 678 hw->vqs = NULL; 679 } 680 681 static int 682 virtio_alloc_queues(struct rte_eth_dev *dev) 683 { 684 struct virtio_hw *hw = dev->data->dev_private; 685 uint16_t nr_vq = virtio_get_nr_vq(hw); 686 uint16_t i; 687 int ret; 688 689 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 690 if (!hw->vqs) { 691 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 692 return -ENOMEM; 693 } 694 695 for (i = 0; i < nr_vq; i++) { 696 ret = virtio_init_queue(dev, i); 697 if (ret < 0) { 698 virtio_free_queues(hw); 699 return ret; 700 } 701 } 702 703 return 0; 704 } 705 706 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 707 708 static void 709 virtio_dev_close(struct rte_eth_dev *dev) 710 { 711 struct virtio_hw *hw = dev->data->dev_private; 712 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 713 714 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 715 716 if (!hw->opened) 717 return; 718 hw->opened = false; 719 720 /* reset the NIC */ 721 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 722 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 723 if (intr_conf->rxq) 724 virtio_queues_unbind_intr(dev); 725 726 if (intr_conf->lsc || intr_conf->rxq) { 727 virtio_intr_disable(dev); 728 rte_intr_efd_disable(dev->intr_handle); 729 rte_free(dev->intr_handle->intr_vec); 730 dev->intr_handle->intr_vec = NULL; 731 } 732 733 vtpci_reset(hw); 734 virtio_dev_free_mbufs(dev); 735 virtio_free_queues(hw); 736 } 737 738 static void 739 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 740 { 741 struct virtio_hw *hw = dev->data->dev_private; 742 struct virtio_pmd_ctrl ctrl; 743 int dlen[1]; 744 int ret; 745 746 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 747 PMD_INIT_LOG(INFO, "host does not support rx control"); 748 return; 749 } 750 751 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 752 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 753 ctrl.data[0] = 1; 754 dlen[0] = 1; 755 756 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 757 if (ret) 758 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 759 } 760 761 static void 762 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 763 { 764 struct virtio_hw *hw = dev->data->dev_private; 765 struct virtio_pmd_ctrl ctrl; 766 int dlen[1]; 767 int ret; 768 769 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 770 PMD_INIT_LOG(INFO, "host does not support rx control"); 771 return; 772 } 773 774 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 775 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 776 ctrl.data[0] = 0; 777 dlen[0] = 1; 778 779 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 780 if (ret) 781 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 782 } 783 784 static void 785 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 786 { 787 struct virtio_hw *hw = dev->data->dev_private; 788 struct virtio_pmd_ctrl ctrl; 789 int dlen[1]; 790 int ret; 791 792 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 793 PMD_INIT_LOG(INFO, "host does not support rx control"); 794 return; 795 } 796 797 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 798 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 799 ctrl.data[0] = 1; 800 dlen[0] = 1; 801 802 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 803 if (ret) 804 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 805 } 806 807 static void 808 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 809 { 810 struct virtio_hw *hw = dev->data->dev_private; 811 struct virtio_pmd_ctrl ctrl; 812 int dlen[1]; 813 int ret; 814 815 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 816 PMD_INIT_LOG(INFO, "host does not support rx control"); 817 return; 818 } 819 820 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 821 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 822 ctrl.data[0] = 0; 823 dlen[0] = 1; 824 825 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 826 if (ret) 827 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 828 } 829 830 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 831 static int 832 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 833 { 834 struct virtio_hw *hw = dev->data->dev_private; 835 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + 836 hw->vtnet_hdr_size; 837 uint32_t frame_size = mtu + ether_hdr_len; 838 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 839 840 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 841 842 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) { 843 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 844 ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 845 return -EINVAL; 846 } 847 return 0; 848 } 849 850 static int 851 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 852 { 853 struct virtio_hw *hw = dev->data->dev_private; 854 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 855 struct virtqueue *vq = rxvq->vq; 856 857 virtqueue_enable_intr(vq); 858 virtio_mb(hw->weak_barriers); 859 return 0; 860 } 861 862 static int 863 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 864 { 865 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 866 struct virtqueue *vq = rxvq->vq; 867 868 virtqueue_disable_intr(vq); 869 return 0; 870 } 871 872 /* 873 * dev_ops for virtio, bare necessities for basic operation 874 */ 875 static const struct eth_dev_ops virtio_eth_dev_ops = { 876 .dev_configure = virtio_dev_configure, 877 .dev_start = virtio_dev_start, 878 .dev_stop = virtio_dev_stop, 879 .dev_close = virtio_dev_close, 880 .promiscuous_enable = virtio_dev_promiscuous_enable, 881 .promiscuous_disable = virtio_dev_promiscuous_disable, 882 .allmulticast_enable = virtio_dev_allmulticast_enable, 883 .allmulticast_disable = virtio_dev_allmulticast_disable, 884 .mtu_set = virtio_mtu_set, 885 .dev_infos_get = virtio_dev_info_get, 886 .stats_get = virtio_dev_stats_get, 887 .xstats_get = virtio_dev_xstats_get, 888 .xstats_get_names = virtio_dev_xstats_get_names, 889 .stats_reset = virtio_dev_stats_reset, 890 .xstats_reset = virtio_dev_stats_reset, 891 .link_update = virtio_dev_link_update, 892 .vlan_offload_set = virtio_dev_vlan_offload_set, 893 .rx_queue_setup = virtio_dev_rx_queue_setup, 894 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 895 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 896 .rx_queue_release = virtio_dev_queue_release, 897 .rx_descriptor_done = virtio_dev_rx_queue_done, 898 .tx_queue_setup = virtio_dev_tx_queue_setup, 899 .tx_queue_release = virtio_dev_queue_release, 900 /* collect stats per queue */ 901 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 902 .vlan_filter_set = virtio_vlan_filter_set, 903 .mac_addr_add = virtio_mac_addr_add, 904 .mac_addr_remove = virtio_mac_addr_remove, 905 .mac_addr_set = virtio_mac_addr_set, 906 }; 907 908 /* 909 * dev_ops for virtio-user in secondary processes, as we just have 910 * some limited supports currently. 911 */ 912 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 913 .dev_infos_get = virtio_dev_info_get, 914 .stats_get = virtio_dev_stats_get, 915 .xstats_get = virtio_dev_xstats_get, 916 .xstats_get_names = virtio_dev_xstats_get_names, 917 .stats_reset = virtio_dev_stats_reset, 918 .xstats_reset = virtio_dev_stats_reset, 919 /* collect stats per queue */ 920 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 921 }; 922 923 static void 924 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 925 { 926 unsigned i; 927 928 for (i = 0; i < dev->data->nb_tx_queues; i++) { 929 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 930 if (txvq == NULL) 931 continue; 932 933 stats->opackets += txvq->stats.packets; 934 stats->obytes += txvq->stats.bytes; 935 stats->oerrors += txvq->stats.errors; 936 937 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 938 stats->q_opackets[i] = txvq->stats.packets; 939 stats->q_obytes[i] = txvq->stats.bytes; 940 } 941 } 942 943 for (i = 0; i < dev->data->nb_rx_queues; i++) { 944 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 945 if (rxvq == NULL) 946 continue; 947 948 stats->ipackets += rxvq->stats.packets; 949 stats->ibytes += rxvq->stats.bytes; 950 stats->ierrors += rxvq->stats.errors; 951 952 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 953 stats->q_ipackets[i] = rxvq->stats.packets; 954 stats->q_ibytes[i] = rxvq->stats.bytes; 955 } 956 } 957 958 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 959 } 960 961 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 962 struct rte_eth_xstat_name *xstats_names, 963 __rte_unused unsigned limit) 964 { 965 unsigned i; 966 unsigned count = 0; 967 unsigned t; 968 969 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 970 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 971 972 if (xstats_names != NULL) { 973 /* Note: limit checked in rte_eth_xstats_names() */ 974 975 for (i = 0; i < dev->data->nb_rx_queues; i++) { 976 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 977 if (rxvq == NULL) 978 continue; 979 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 980 snprintf(xstats_names[count].name, 981 sizeof(xstats_names[count].name), 982 "rx_q%u_%s", i, 983 rte_virtio_rxq_stat_strings[t].name); 984 count++; 985 } 986 } 987 988 for (i = 0; i < dev->data->nb_tx_queues; i++) { 989 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 990 if (txvq == NULL) 991 continue; 992 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 993 snprintf(xstats_names[count].name, 994 sizeof(xstats_names[count].name), 995 "tx_q%u_%s", i, 996 rte_virtio_txq_stat_strings[t].name); 997 count++; 998 } 999 } 1000 return count; 1001 } 1002 return nstats; 1003 } 1004 1005 static int 1006 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1007 unsigned n) 1008 { 1009 unsigned i; 1010 unsigned count = 0; 1011 1012 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1013 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1014 1015 if (n < nstats) 1016 return nstats; 1017 1018 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1019 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1020 1021 if (rxvq == NULL) 1022 continue; 1023 1024 unsigned t; 1025 1026 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1027 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1028 rte_virtio_rxq_stat_strings[t].offset); 1029 xstats[count].id = count; 1030 count++; 1031 } 1032 } 1033 1034 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1035 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1036 1037 if (txvq == NULL) 1038 continue; 1039 1040 unsigned t; 1041 1042 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1043 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1044 rte_virtio_txq_stat_strings[t].offset); 1045 xstats[count].id = count; 1046 count++; 1047 } 1048 } 1049 1050 return count; 1051 } 1052 1053 static int 1054 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1055 { 1056 virtio_update_stats(dev, stats); 1057 1058 return 0; 1059 } 1060 1061 static void 1062 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1063 { 1064 unsigned int i; 1065 1066 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1067 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1068 if (txvq == NULL) 1069 continue; 1070 1071 txvq->stats.packets = 0; 1072 txvq->stats.bytes = 0; 1073 txvq->stats.errors = 0; 1074 txvq->stats.multicast = 0; 1075 txvq->stats.broadcast = 0; 1076 memset(txvq->stats.size_bins, 0, 1077 sizeof(txvq->stats.size_bins[0]) * 8); 1078 } 1079 1080 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1081 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1082 if (rxvq == NULL) 1083 continue; 1084 1085 rxvq->stats.packets = 0; 1086 rxvq->stats.bytes = 0; 1087 rxvq->stats.errors = 0; 1088 rxvq->stats.multicast = 0; 1089 rxvq->stats.broadcast = 0; 1090 memset(rxvq->stats.size_bins, 0, 1091 sizeof(rxvq->stats.size_bins[0]) * 8); 1092 } 1093 } 1094 1095 static void 1096 virtio_set_hwaddr(struct virtio_hw *hw) 1097 { 1098 vtpci_write_dev_config(hw, 1099 offsetof(struct virtio_net_config, mac), 1100 &hw->mac_addr, ETHER_ADDR_LEN); 1101 } 1102 1103 static void 1104 virtio_get_hwaddr(struct virtio_hw *hw) 1105 { 1106 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) { 1107 vtpci_read_dev_config(hw, 1108 offsetof(struct virtio_net_config, mac), 1109 &hw->mac_addr, ETHER_ADDR_LEN); 1110 } else { 1111 eth_random_addr(&hw->mac_addr[0]); 1112 virtio_set_hwaddr(hw); 1113 } 1114 } 1115 1116 static int 1117 virtio_mac_table_set(struct virtio_hw *hw, 1118 const struct virtio_net_ctrl_mac *uc, 1119 const struct virtio_net_ctrl_mac *mc) 1120 { 1121 struct virtio_pmd_ctrl ctrl; 1122 int err, len[2]; 1123 1124 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1125 PMD_DRV_LOG(INFO, "host does not support mac table"); 1126 return -1; 1127 } 1128 1129 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1130 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1131 1132 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries); 1133 memcpy(ctrl.data, uc, len[0]); 1134 1135 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries); 1136 memcpy(ctrl.data + len[0], mc, len[1]); 1137 1138 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1139 if (err != 0) 1140 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1141 return err; 1142 } 1143 1144 static int 1145 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr, 1146 uint32_t index, uint32_t vmdq __rte_unused) 1147 { 1148 struct virtio_hw *hw = dev->data->dev_private; 1149 const struct ether_addr *addrs = dev->data->mac_addrs; 1150 unsigned int i; 1151 struct virtio_net_ctrl_mac *uc, *mc; 1152 1153 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1154 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1155 return -EINVAL; 1156 } 1157 1158 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1159 uc->entries = 0; 1160 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1161 mc->entries = 0; 1162 1163 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1164 const struct ether_addr *addr 1165 = (i == index) ? mac_addr : addrs + i; 1166 struct virtio_net_ctrl_mac *tbl 1167 = is_multicast_ether_addr(addr) ? mc : uc; 1168 1169 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN); 1170 } 1171 1172 return virtio_mac_table_set(hw, uc, mc); 1173 } 1174 1175 static void 1176 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1177 { 1178 struct virtio_hw *hw = dev->data->dev_private; 1179 struct ether_addr *addrs = dev->data->mac_addrs; 1180 struct virtio_net_ctrl_mac *uc, *mc; 1181 unsigned int i; 1182 1183 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1184 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1185 return; 1186 } 1187 1188 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries)); 1189 uc->entries = 0; 1190 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries)); 1191 mc->entries = 0; 1192 1193 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1194 struct virtio_net_ctrl_mac *tbl; 1195 1196 if (i == index || is_zero_ether_addr(addrs + i)) 1197 continue; 1198 1199 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc; 1200 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN); 1201 } 1202 1203 virtio_mac_table_set(hw, uc, mc); 1204 } 1205 1206 static int 1207 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr) 1208 { 1209 struct virtio_hw *hw = dev->data->dev_private; 1210 1211 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN); 1212 1213 /* Use atomic update if available */ 1214 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1215 struct virtio_pmd_ctrl ctrl; 1216 int len = ETHER_ADDR_LEN; 1217 1218 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1219 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1220 1221 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN); 1222 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1223 } 1224 1225 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1226 return -ENOTSUP; 1227 1228 virtio_set_hwaddr(hw); 1229 return 0; 1230 } 1231 1232 static int 1233 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1234 { 1235 struct virtio_hw *hw = dev->data->dev_private; 1236 struct virtio_pmd_ctrl ctrl; 1237 int len; 1238 1239 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1240 return -ENOTSUP; 1241 1242 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1243 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1244 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1245 len = sizeof(vlan_id); 1246 1247 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1248 } 1249 1250 static int 1251 virtio_intr_enable(struct rte_eth_dev *dev) 1252 { 1253 struct virtio_hw *hw = dev->data->dev_private; 1254 1255 if (rte_intr_enable(dev->intr_handle) < 0) 1256 return -1; 1257 1258 if (!hw->virtio_user_dev) 1259 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1260 1261 return 0; 1262 } 1263 1264 static int 1265 virtio_intr_disable(struct rte_eth_dev *dev) 1266 { 1267 struct virtio_hw *hw = dev->data->dev_private; 1268 1269 if (rte_intr_disable(dev->intr_handle) < 0) 1270 return -1; 1271 1272 if (!hw->virtio_user_dev) 1273 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1274 1275 return 0; 1276 } 1277 1278 static int 1279 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1280 { 1281 uint64_t host_features; 1282 1283 /* Prepare guest_features: feature that driver wants to support */ 1284 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1285 req_features); 1286 1287 /* Read device(host) feature bits */ 1288 host_features = VTPCI_OPS(hw)->get_features(hw); 1289 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1290 host_features); 1291 1292 /* If supported, ensure MTU value is valid before acknowledging it. */ 1293 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1294 struct virtio_net_config config; 1295 1296 vtpci_read_dev_config(hw, 1297 offsetof(struct virtio_net_config, mtu), 1298 &config.mtu, sizeof(config.mtu)); 1299 1300 if (config.mtu < ETHER_MIN_MTU) 1301 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1302 } 1303 1304 /* 1305 * Negotiate features: Subset of device feature bits are written back 1306 * guest feature bits. 1307 */ 1308 hw->guest_features = req_features; 1309 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1310 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1311 hw->guest_features); 1312 1313 if (hw->modern) { 1314 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1315 PMD_INIT_LOG(ERR, 1316 "VIRTIO_F_VERSION_1 features is not enabled."); 1317 return -1; 1318 } 1319 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1320 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1321 PMD_INIT_LOG(ERR, 1322 "failed to set FEATURES_OK status!"); 1323 return -1; 1324 } 1325 } 1326 1327 hw->req_guest_features = req_features; 1328 1329 return 0; 1330 } 1331 1332 int 1333 virtio_dev_pause(struct rte_eth_dev *dev) 1334 { 1335 struct virtio_hw *hw = dev->data->dev_private; 1336 1337 rte_spinlock_lock(&hw->state_lock); 1338 1339 if (hw->started == 0) { 1340 /* Device is just stopped. */ 1341 rte_spinlock_unlock(&hw->state_lock); 1342 return -1; 1343 } 1344 hw->started = 0; 1345 /* 1346 * Prevent the worker threads from touching queues to avoid contention, 1347 * 1 ms should be enough for the ongoing Tx function to finish. 1348 */ 1349 rte_delay_ms(1); 1350 return 0; 1351 } 1352 1353 /* 1354 * Recover hw state to let the worker threads continue. 1355 */ 1356 void 1357 virtio_dev_resume(struct rte_eth_dev *dev) 1358 { 1359 struct virtio_hw *hw = dev->data->dev_private; 1360 1361 hw->started = 1; 1362 rte_spinlock_unlock(&hw->state_lock); 1363 } 1364 1365 /* 1366 * Should be called only after device is paused. 1367 */ 1368 int 1369 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1370 int nb_pkts) 1371 { 1372 struct virtio_hw *hw = dev->data->dev_private; 1373 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1374 int ret; 1375 1376 hw->inject_pkts = tx_pkts; 1377 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1378 hw->inject_pkts = NULL; 1379 1380 return ret; 1381 } 1382 1383 static void 1384 virtio_notify_peers(struct rte_eth_dev *dev) 1385 { 1386 struct virtio_hw *hw = dev->data->dev_private; 1387 struct virtnet_rx *rxvq; 1388 struct rte_mbuf *rarp_mbuf; 1389 1390 if (!dev->data->rx_queues) 1391 return; 1392 1393 rxvq = dev->data->rx_queues[0]; 1394 if (!rxvq) 1395 return; 1396 1397 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1398 (struct ether_addr *)hw->mac_addr); 1399 if (rarp_mbuf == NULL) { 1400 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1401 return; 1402 } 1403 1404 /* If virtio port just stopped, no need to send RARP */ 1405 if (virtio_dev_pause(dev) < 0) { 1406 rte_pktmbuf_free(rarp_mbuf); 1407 return; 1408 } 1409 1410 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1411 virtio_dev_resume(dev); 1412 } 1413 1414 static void 1415 virtio_ack_link_announce(struct rte_eth_dev *dev) 1416 { 1417 struct virtio_hw *hw = dev->data->dev_private; 1418 struct virtio_pmd_ctrl ctrl; 1419 1420 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1421 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1422 1423 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1424 } 1425 1426 /* 1427 * Process virtio config changed interrupt. Call the callback 1428 * if link state changed, generate gratuitous RARP packet if 1429 * the status indicates an ANNOUNCE. 1430 */ 1431 void 1432 virtio_interrupt_handler(void *param) 1433 { 1434 struct rte_eth_dev *dev = param; 1435 struct virtio_hw *hw = dev->data->dev_private; 1436 uint8_t isr; 1437 uint16_t status; 1438 1439 /* Read interrupt status which clears interrupt */ 1440 isr = vtpci_isr(hw); 1441 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1442 1443 if (virtio_intr_enable(dev) < 0) 1444 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1445 1446 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1447 if (virtio_dev_link_update(dev, 0) == 0) 1448 _rte_eth_dev_callback_process(dev, 1449 RTE_ETH_EVENT_INTR_LSC, 1450 NULL); 1451 1452 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1453 vtpci_read_dev_config(hw, 1454 offsetof(struct virtio_net_config, status), 1455 &status, sizeof(status)); 1456 if (status & VIRTIO_NET_S_ANNOUNCE) { 1457 virtio_notify_peers(dev); 1458 if (hw->cvq) 1459 virtio_ack_link_announce(dev); 1460 } 1461 } 1462 } 1463 } 1464 1465 /* set rx and tx handlers according to what is supported */ 1466 static void 1467 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1468 { 1469 struct virtio_hw *hw = eth_dev->data->dev_private; 1470 1471 if (vtpci_packed_queue(hw)) { 1472 PMD_INIT_LOG(INFO, 1473 "virtio: using packed ring %s Tx path on port %u", 1474 hw->use_inorder_tx ? "inorder" : "standard", 1475 eth_dev->data->port_id); 1476 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1477 } else { 1478 if (hw->use_inorder_tx) { 1479 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1480 eth_dev->data->port_id); 1481 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1482 } else { 1483 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1484 eth_dev->data->port_id); 1485 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1486 } 1487 } 1488 1489 if (vtpci_packed_queue(hw)) { 1490 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1491 PMD_INIT_LOG(INFO, 1492 "virtio: using packed ring mergeable buffer Rx path on port %u", 1493 eth_dev->data->port_id); 1494 eth_dev->rx_pkt_burst = 1495 &virtio_recv_mergeable_pkts_packed; 1496 } else { 1497 PMD_INIT_LOG(INFO, 1498 "virtio: using packed ring standard Rx path on port %u", 1499 eth_dev->data->port_id); 1500 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1501 } 1502 } else { 1503 if (hw->use_simple_rx) { 1504 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", 1505 eth_dev->data->port_id); 1506 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1507 } else if (hw->use_inorder_rx) { 1508 PMD_INIT_LOG(INFO, 1509 "virtio: using inorder Rx path on port %u", 1510 eth_dev->data->port_id); 1511 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1512 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1513 PMD_INIT_LOG(INFO, 1514 "virtio: using mergeable buffer Rx path on port %u", 1515 eth_dev->data->port_id); 1516 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1517 } else { 1518 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1519 eth_dev->data->port_id); 1520 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1521 } 1522 } 1523 1524 } 1525 1526 /* Only support 1:1 queue/interrupt mapping so far. 1527 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1528 * interrupt vectors (<N+1). 1529 */ 1530 static int 1531 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1532 { 1533 uint32_t i; 1534 struct virtio_hw *hw = dev->data->dev_private; 1535 1536 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1537 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1538 dev->intr_handle->intr_vec[i] = i + 1; 1539 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1540 VIRTIO_MSI_NO_VECTOR) { 1541 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1542 return -EBUSY; 1543 } 1544 } 1545 1546 return 0; 1547 } 1548 1549 static void 1550 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1551 { 1552 uint32_t i; 1553 struct virtio_hw *hw = dev->data->dev_private; 1554 1555 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1556 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1557 VTPCI_OPS(hw)->set_queue_irq(hw, 1558 hw->vqs[i * VTNET_CQ], 1559 VIRTIO_MSI_NO_VECTOR); 1560 } 1561 1562 static int 1563 virtio_configure_intr(struct rte_eth_dev *dev) 1564 { 1565 struct virtio_hw *hw = dev->data->dev_private; 1566 1567 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1568 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1569 return -ENOTSUP; 1570 } 1571 1572 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1573 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1574 return -1; 1575 } 1576 1577 if (!dev->intr_handle->intr_vec) { 1578 dev->intr_handle->intr_vec = 1579 rte_zmalloc("intr_vec", 1580 hw->max_queue_pairs * sizeof(int), 0); 1581 if (!dev->intr_handle->intr_vec) { 1582 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1583 hw->max_queue_pairs); 1584 return -ENOMEM; 1585 } 1586 } 1587 1588 /* Re-register callback to update max_intr */ 1589 rte_intr_callback_unregister(dev->intr_handle, 1590 virtio_interrupt_handler, 1591 dev); 1592 rte_intr_callback_register(dev->intr_handle, 1593 virtio_interrupt_handler, 1594 dev); 1595 1596 /* DO NOT try to remove this! This function will enable msix, or QEMU 1597 * will encounter SIGSEGV when DRIVER_OK is sent. 1598 * And for legacy devices, this should be done before queue/vec binding 1599 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1600 * (22) will be ignored. 1601 */ 1602 if (virtio_intr_enable(dev) < 0) { 1603 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1604 return -1; 1605 } 1606 1607 if (virtio_queues_bind_intr(dev) < 0) { 1608 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1609 return -1; 1610 } 1611 1612 return 0; 1613 } 1614 1615 /* reset device and renegotiate features if needed */ 1616 static int 1617 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1618 { 1619 struct virtio_hw *hw = eth_dev->data->dev_private; 1620 struct virtio_net_config *config; 1621 struct virtio_net_config local_config; 1622 struct rte_pci_device *pci_dev = NULL; 1623 int ret; 1624 1625 /* Reset the device although not necessary at startup */ 1626 vtpci_reset(hw); 1627 1628 if (hw->vqs) { 1629 virtio_dev_free_mbufs(eth_dev); 1630 virtio_free_queues(hw); 1631 } 1632 1633 /* Tell the host we've noticed this device. */ 1634 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1635 1636 /* Tell the host we've known how to drive the device. */ 1637 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1638 if (virtio_negotiate_features(hw, req_features) < 0) 1639 return -1; 1640 1641 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1642 1643 if (!hw->virtio_user_dev) { 1644 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1645 rte_eth_copy_pci_info(eth_dev, pci_dev); 1646 } 1647 1648 /* If host does not support both status and MSI-X then disable LSC */ 1649 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1650 hw->use_msix != VIRTIO_MSIX_NONE) 1651 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1652 else 1653 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1654 1655 /* Setting up rx_header size for the device */ 1656 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1657 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1658 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1659 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1660 else 1661 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1662 1663 /* Copy the permanent MAC address to: virtio_hw */ 1664 virtio_get_hwaddr(hw); 1665 ether_addr_copy((struct ether_addr *) hw->mac_addr, 1666 ð_dev->data->mac_addrs[0]); 1667 PMD_INIT_LOG(DEBUG, 1668 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1669 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1670 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1671 1672 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1673 config = &local_config; 1674 1675 vtpci_read_dev_config(hw, 1676 offsetof(struct virtio_net_config, mac), 1677 &config->mac, sizeof(config->mac)); 1678 1679 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1680 vtpci_read_dev_config(hw, 1681 offsetof(struct virtio_net_config, status), 1682 &config->status, sizeof(config->status)); 1683 } else { 1684 PMD_INIT_LOG(DEBUG, 1685 "VIRTIO_NET_F_STATUS is not supported"); 1686 config->status = 0; 1687 } 1688 1689 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1690 vtpci_read_dev_config(hw, 1691 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1692 &config->max_virtqueue_pairs, 1693 sizeof(config->max_virtqueue_pairs)); 1694 } else { 1695 PMD_INIT_LOG(DEBUG, 1696 "VIRTIO_NET_F_MQ is not supported"); 1697 config->max_virtqueue_pairs = 1; 1698 } 1699 1700 hw->max_queue_pairs = config->max_virtqueue_pairs; 1701 1702 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1703 vtpci_read_dev_config(hw, 1704 offsetof(struct virtio_net_config, mtu), 1705 &config->mtu, 1706 sizeof(config->mtu)); 1707 1708 /* 1709 * MTU value has already been checked at negotiation 1710 * time, but check again in case it has changed since 1711 * then, which should not happen. 1712 */ 1713 if (config->mtu < ETHER_MIN_MTU) { 1714 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1715 config->mtu); 1716 return -1; 1717 } 1718 1719 hw->max_mtu = config->mtu; 1720 /* Set initial MTU to maximum one supported by vhost */ 1721 eth_dev->data->mtu = config->mtu; 1722 1723 } else { 1724 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1725 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1726 } 1727 1728 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1729 config->max_virtqueue_pairs); 1730 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1731 PMD_INIT_LOG(DEBUG, 1732 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1733 config->mac[0], config->mac[1], 1734 config->mac[2], config->mac[3], 1735 config->mac[4], config->mac[5]); 1736 } else { 1737 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1738 hw->max_queue_pairs = 1; 1739 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN - 1740 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1741 } 1742 1743 ret = virtio_alloc_queues(eth_dev); 1744 if (ret < 0) 1745 return ret; 1746 1747 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1748 if (virtio_configure_intr(eth_dev) < 0) { 1749 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1750 return -1; 1751 } 1752 } 1753 1754 vtpci_reinit_complete(hw); 1755 1756 if (pci_dev) 1757 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1758 eth_dev->data->port_id, pci_dev->id.vendor_id, 1759 pci_dev->id.device_id); 1760 1761 return 0; 1762 } 1763 1764 /* 1765 * Remap the PCI device again (IO port map for legacy device and 1766 * memory map for modern device), so that the secondary process 1767 * could have the PCI initiated correctly. 1768 */ 1769 static int 1770 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1771 { 1772 if (hw->modern) { 1773 /* 1774 * We don't have to re-parse the PCI config space, since 1775 * rte_pci_map_device() makes sure the mapped address 1776 * in secondary process would equal to the one mapped in 1777 * the primary process: error will be returned if that 1778 * requirement is not met. 1779 * 1780 * That said, we could simply reuse all cap pointers 1781 * (such as dev_cfg, common_cfg, etc.) parsed from the 1782 * primary process, which is stored in shared memory. 1783 */ 1784 if (rte_pci_map_device(pci_dev)) { 1785 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1786 return -1; 1787 } 1788 } else { 1789 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1790 return -1; 1791 } 1792 1793 return 0; 1794 } 1795 1796 static void 1797 virtio_set_vtpci_ops(struct virtio_hw *hw) 1798 { 1799 #ifdef RTE_VIRTIO_USER 1800 if (hw->virtio_user_dev) 1801 VTPCI_OPS(hw) = &virtio_user_ops; 1802 else 1803 #endif 1804 if (hw->modern) 1805 VTPCI_OPS(hw) = &modern_ops; 1806 else 1807 VTPCI_OPS(hw) = &legacy_ops; 1808 } 1809 1810 /* 1811 * This function is based on probe() function in virtio_pci.c 1812 * It returns 0 on success. 1813 */ 1814 int 1815 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1816 { 1817 struct virtio_hw *hw = eth_dev->data->dev_private; 1818 int ret; 1819 1820 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); 1821 1822 eth_dev->dev_ops = &virtio_eth_dev_ops; 1823 1824 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1825 if (!hw->virtio_user_dev) { 1826 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1827 if (ret) 1828 return ret; 1829 } 1830 1831 virtio_set_vtpci_ops(hw); 1832 set_rxtx_funcs(eth_dev); 1833 1834 return 0; 1835 } 1836 1837 /* Allocate memory for storing MAC addresses */ 1838 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0); 1839 if (eth_dev->data->mac_addrs == NULL) { 1840 PMD_INIT_LOG(ERR, 1841 "Failed to allocate %d bytes needed to store MAC addresses", 1842 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN); 1843 return -ENOMEM; 1844 } 1845 1846 hw->port_id = eth_dev->data->port_id; 1847 /* For virtio_user case the hw->virtio_user_dev is populated by 1848 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1849 */ 1850 if (!hw->virtio_user_dev) { 1851 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1852 if (ret) 1853 goto out; 1854 } 1855 1856 /* reset device and negotiate default features */ 1857 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1858 if (ret < 0) 1859 goto out; 1860 1861 return 0; 1862 1863 out: 1864 rte_free(eth_dev->data->mac_addrs); 1865 eth_dev->data->mac_addrs = NULL; 1866 return ret; 1867 } 1868 1869 static int 1870 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1871 { 1872 PMD_INIT_FUNC_TRACE(); 1873 1874 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1875 return 0; 1876 1877 virtio_dev_stop(eth_dev); 1878 virtio_dev_close(eth_dev); 1879 1880 eth_dev->dev_ops = NULL; 1881 eth_dev->tx_pkt_burst = NULL; 1882 eth_dev->rx_pkt_burst = NULL; 1883 1884 if (eth_dev->device) 1885 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1886 1887 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 1888 1889 return 0; 1890 } 1891 1892 static int vdpa_check_handler(__rte_unused const char *key, 1893 const char *value, __rte_unused void *opaque) 1894 { 1895 if (strcmp(value, "1")) 1896 return -1; 1897 1898 return 0; 1899 } 1900 1901 static int 1902 vdpa_mode_selected(struct rte_devargs *devargs) 1903 { 1904 struct rte_kvargs *kvlist; 1905 const char *key = "vdpa"; 1906 int ret = 0; 1907 1908 if (devargs == NULL) 1909 return 0; 1910 1911 kvlist = rte_kvargs_parse(devargs->args, NULL); 1912 if (kvlist == NULL) 1913 return 0; 1914 1915 if (!rte_kvargs_count(kvlist, key)) 1916 goto exit; 1917 1918 /* vdpa mode selected when there's a key-value pair: vdpa=1 */ 1919 if (rte_kvargs_process(kvlist, key, 1920 vdpa_check_handler, NULL) < 0) { 1921 goto exit; 1922 } 1923 ret = 1; 1924 1925 exit: 1926 rte_kvargs_free(kvlist); 1927 return ret; 1928 } 1929 1930 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1931 struct rte_pci_device *pci_dev) 1932 { 1933 if (rte_eal_iopl_init() != 0) { 1934 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); 1935 return 1; 1936 } 1937 1938 /* virtio pmd skips probe if device needs to work in vdpa mode */ 1939 if (vdpa_mode_selected(pci_dev->device.devargs)) 1940 return 1; 1941 1942 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 1943 eth_virtio_dev_init); 1944 } 1945 1946 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 1947 { 1948 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 1949 } 1950 1951 static struct rte_pci_driver rte_virtio_pmd = { 1952 .driver = { 1953 .name = "net_virtio", 1954 }, 1955 .id_table = pci_id_virtio_map, 1956 .drv_flags = 0, 1957 .probe = eth_virtio_pci_probe, 1958 .remove = eth_virtio_pci_remove, 1959 }; 1960 1961 RTE_INIT(rte_virtio_pmd_init) 1962 { 1963 rte_eal_iopl_init(); 1964 rte_pci_register(&rte_virtio_pmd); 1965 } 1966 1967 static bool 1968 rx_offload_enabled(struct virtio_hw *hw) 1969 { 1970 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 1971 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 1972 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 1973 } 1974 1975 static bool 1976 tx_offload_enabled(struct virtio_hw *hw) 1977 { 1978 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 1979 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 1980 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 1981 } 1982 1983 /* 1984 * Configure virtio device 1985 * It returns 0 on success. 1986 */ 1987 static int 1988 virtio_dev_configure(struct rte_eth_dev *dev) 1989 { 1990 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 1991 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 1992 struct virtio_hw *hw = dev->data->dev_private; 1993 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN + 1994 hw->vtnet_hdr_size; 1995 uint64_t rx_offloads = rxmode->offloads; 1996 uint64_t tx_offloads = txmode->offloads; 1997 uint64_t req_features; 1998 int ret; 1999 2000 PMD_INIT_LOG(DEBUG, "configure"); 2001 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2002 2003 if (dev->data->dev_conf.intr_conf.rxq) { 2004 ret = virtio_init_device(dev, hw->req_guest_features); 2005 if (ret < 0) 2006 return ret; 2007 } 2008 2009 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2010 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2011 2012 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2013 DEV_RX_OFFLOAD_TCP_CKSUM)) 2014 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2015 2016 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2017 req_features |= 2018 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2019 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2020 2021 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2022 DEV_TX_OFFLOAD_TCP_CKSUM)) 2023 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2024 2025 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2026 req_features |= 2027 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2028 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2029 2030 /* if request features changed, reinit the device */ 2031 if (req_features != hw->req_guest_features) { 2032 ret = virtio_init_device(dev, req_features); 2033 if (ret < 0) 2034 return ret; 2035 } 2036 2037 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2038 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2039 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2040 PMD_DRV_LOG(ERR, 2041 "rx checksum not available on this host"); 2042 return -ENOTSUP; 2043 } 2044 2045 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2046 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2047 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2048 PMD_DRV_LOG(ERR, 2049 "Large Receive Offload not available on this host"); 2050 return -ENOTSUP; 2051 } 2052 2053 /* start control queue */ 2054 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2055 virtio_dev_cq_start(dev); 2056 2057 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2058 hw->vlan_strip = 1; 2059 2060 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2061 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2062 PMD_DRV_LOG(ERR, 2063 "vlan filtering not available on this host"); 2064 return -ENOTSUP; 2065 } 2066 2067 hw->has_tx_offload = tx_offload_enabled(hw); 2068 hw->has_rx_offload = rx_offload_enabled(hw); 2069 2070 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2071 /* Enable vector (0) for Link State Intrerrupt */ 2072 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2073 VIRTIO_MSI_NO_VECTOR) { 2074 PMD_DRV_LOG(ERR, "failed to set config vector"); 2075 return -EBUSY; 2076 } 2077 2078 rte_spinlock_init(&hw->state_lock); 2079 2080 hw->use_simple_rx = 1; 2081 2082 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2083 hw->use_inorder_tx = 1; 2084 hw->use_inorder_rx = 1; 2085 hw->use_simple_rx = 0; 2086 } 2087 2088 if (vtpci_packed_queue(hw)) { 2089 hw->use_simple_rx = 0; 2090 hw->use_inorder_rx = 0; 2091 } 2092 2093 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2094 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2095 hw->use_simple_rx = 0; 2096 } 2097 #endif 2098 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2099 hw->use_simple_rx = 0; 2100 } 2101 2102 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2103 DEV_RX_OFFLOAD_TCP_CKSUM | 2104 DEV_RX_OFFLOAD_TCP_LRO | 2105 DEV_RX_OFFLOAD_VLAN_STRIP)) 2106 hw->use_simple_rx = 0; 2107 2108 hw->opened = true; 2109 2110 return 0; 2111 } 2112 2113 2114 static int 2115 virtio_dev_start(struct rte_eth_dev *dev) 2116 { 2117 uint16_t nb_queues, i; 2118 struct virtnet_rx *rxvq; 2119 struct virtnet_tx *txvq __rte_unused; 2120 struct virtio_hw *hw = dev->data->dev_private; 2121 int ret; 2122 2123 /* Finish the initialization of the queues */ 2124 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2125 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2126 if (ret < 0) 2127 return ret; 2128 } 2129 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2130 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2131 if (ret < 0) 2132 return ret; 2133 } 2134 2135 /* check if lsc interrupt feature is enabled */ 2136 if (dev->data->dev_conf.intr_conf.lsc) { 2137 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2138 PMD_DRV_LOG(ERR, "link status not supported by host"); 2139 return -ENOTSUP; 2140 } 2141 } 2142 2143 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2144 * in device configure, but it could be unmapped when device is 2145 * stopped. 2146 */ 2147 if (dev->data->dev_conf.intr_conf.lsc || 2148 dev->data->dev_conf.intr_conf.rxq) { 2149 virtio_intr_disable(dev); 2150 2151 /* Setup interrupt callback */ 2152 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2153 rte_intr_callback_register(dev->intr_handle, 2154 virtio_interrupt_handler, 2155 dev); 2156 2157 if (virtio_intr_enable(dev) < 0) { 2158 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2159 return -EIO; 2160 } 2161 } 2162 2163 /*Notify the backend 2164 *Otherwise the tap backend might already stop its queue due to fullness. 2165 *vhost backend will have no chance to be waked up 2166 */ 2167 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2168 if (hw->max_queue_pairs > 1) { 2169 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2170 return -EINVAL; 2171 } 2172 2173 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2174 2175 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2176 rxvq = dev->data->rx_queues[i]; 2177 /* Flush the old packets */ 2178 virtqueue_rxvq_flush(rxvq->vq); 2179 virtqueue_notify(rxvq->vq); 2180 } 2181 2182 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2183 txvq = dev->data->tx_queues[i]; 2184 virtqueue_notify(txvq->vq); 2185 } 2186 2187 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2188 2189 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2190 rxvq = dev->data->rx_queues[i]; 2191 VIRTQUEUE_DUMP(rxvq->vq); 2192 } 2193 2194 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2195 txvq = dev->data->tx_queues[i]; 2196 VIRTQUEUE_DUMP(txvq->vq); 2197 } 2198 2199 set_rxtx_funcs(dev); 2200 hw->started = true; 2201 2202 /* Initialize Link state */ 2203 virtio_dev_link_update(dev, 0); 2204 2205 return 0; 2206 } 2207 2208 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2209 { 2210 struct virtio_hw *hw = dev->data->dev_private; 2211 uint16_t nr_vq = virtio_get_nr_vq(hw); 2212 const char *type __rte_unused; 2213 unsigned int i, mbuf_num = 0; 2214 struct virtqueue *vq; 2215 struct rte_mbuf *buf; 2216 int queue_type; 2217 2218 if (hw->vqs == NULL) 2219 return; 2220 2221 for (i = 0; i < nr_vq; i++) { 2222 vq = hw->vqs[i]; 2223 if (!vq) 2224 continue; 2225 2226 queue_type = virtio_get_queue_type(hw, i); 2227 if (queue_type == VTNET_RQ) 2228 type = "rxq"; 2229 else if (queue_type == VTNET_TQ) 2230 type = "txq"; 2231 else 2232 continue; 2233 2234 PMD_INIT_LOG(DEBUG, 2235 "Before freeing %s[%d] used and unused buf", 2236 type, i); 2237 VIRTQUEUE_DUMP(vq); 2238 2239 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2240 rte_pktmbuf_free(buf); 2241 mbuf_num++; 2242 } 2243 2244 PMD_INIT_LOG(DEBUG, 2245 "After freeing %s[%d] used and unused buf", 2246 type, i); 2247 VIRTQUEUE_DUMP(vq); 2248 } 2249 2250 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2251 } 2252 2253 /* 2254 * Stop device: disable interrupt and mark link down 2255 */ 2256 static void 2257 virtio_dev_stop(struct rte_eth_dev *dev) 2258 { 2259 struct virtio_hw *hw = dev->data->dev_private; 2260 struct rte_eth_link link; 2261 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2262 2263 PMD_INIT_LOG(DEBUG, "stop"); 2264 2265 rte_spinlock_lock(&hw->state_lock); 2266 if (!hw->started) 2267 goto out_unlock; 2268 hw->started = false; 2269 2270 if (intr_conf->lsc || intr_conf->rxq) { 2271 virtio_intr_disable(dev); 2272 2273 /* Reset interrupt callback */ 2274 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2275 rte_intr_callback_unregister(dev->intr_handle, 2276 virtio_interrupt_handler, 2277 dev); 2278 } 2279 } 2280 2281 memset(&link, 0, sizeof(link)); 2282 rte_eth_linkstatus_set(dev, &link); 2283 out_unlock: 2284 rte_spinlock_unlock(&hw->state_lock); 2285 } 2286 2287 static int 2288 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2289 { 2290 struct rte_eth_link link; 2291 uint16_t status; 2292 struct virtio_hw *hw = dev->data->dev_private; 2293 2294 memset(&link, 0, sizeof(link)); 2295 link.link_duplex = ETH_LINK_FULL_DUPLEX; 2296 link.link_speed = ETH_SPEED_NUM_10G; 2297 link.link_autoneg = ETH_LINK_FIXED; 2298 2299 if (!hw->started) { 2300 link.link_status = ETH_LINK_DOWN; 2301 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2302 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2303 vtpci_read_dev_config(hw, 2304 offsetof(struct virtio_net_config, status), 2305 &status, sizeof(status)); 2306 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2307 link.link_status = ETH_LINK_DOWN; 2308 PMD_INIT_LOG(DEBUG, "Port %d is down", 2309 dev->data->port_id); 2310 } else { 2311 link.link_status = ETH_LINK_UP; 2312 PMD_INIT_LOG(DEBUG, "Port %d is up", 2313 dev->data->port_id); 2314 } 2315 } else { 2316 link.link_status = ETH_LINK_UP; 2317 } 2318 2319 return rte_eth_linkstatus_set(dev, &link); 2320 } 2321 2322 static int 2323 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2324 { 2325 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2326 struct virtio_hw *hw = dev->data->dev_private; 2327 uint64_t offloads = rxmode->offloads; 2328 2329 if (mask & ETH_VLAN_FILTER_MASK) { 2330 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2331 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2332 2333 PMD_DRV_LOG(NOTICE, 2334 "vlan filtering not available on this host"); 2335 2336 return -ENOTSUP; 2337 } 2338 } 2339 2340 if (mask & ETH_VLAN_STRIP_MASK) 2341 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2342 2343 return 0; 2344 } 2345 2346 static void 2347 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2348 { 2349 uint64_t tso_mask, host_features; 2350 struct virtio_hw *hw = dev->data->dev_private; 2351 2352 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ 2353 2354 dev_info->max_rx_queues = 2355 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2356 dev_info->max_tx_queues = 2357 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2358 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2359 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2360 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2361 2362 host_features = VTPCI_OPS(hw)->get_features(hw); 2363 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2364 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2365 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2366 dev_info->rx_offload_capa |= 2367 DEV_RX_OFFLOAD_TCP_CKSUM | 2368 DEV_RX_OFFLOAD_UDP_CKSUM; 2369 } 2370 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2371 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2372 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2373 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2374 if ((host_features & tso_mask) == tso_mask) 2375 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2376 2377 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2378 DEV_TX_OFFLOAD_VLAN_INSERT; 2379 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2380 dev_info->tx_offload_capa |= 2381 DEV_TX_OFFLOAD_UDP_CKSUM | 2382 DEV_TX_OFFLOAD_TCP_CKSUM; 2383 } 2384 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2385 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2386 if ((host_features & tso_mask) == tso_mask) 2387 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2388 } 2389 2390 /* 2391 * It enables testpmd to collect per queue stats. 2392 */ 2393 static int 2394 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2395 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2396 __rte_unused uint8_t is_rx) 2397 { 2398 return 0; 2399 } 2400 2401 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2402 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2403 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2404 2405 RTE_INIT(virtio_init_log) 2406 { 2407 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2408 if (virtio_logtype_init >= 0) 2409 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2410 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2411 if (virtio_logtype_driver >= 0) 2412 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2413 } 2414