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 rte_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 rte_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 = RTE_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 < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 843 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 844 RTE_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, RTE_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, RTE_ETHER_ADDR_LEN); 1110 } else { 1111 rte_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 * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1133 memcpy(ctrl.data, uc, len[0]); 1134 1135 len[1] = mc->entries * RTE_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 rte_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 rte_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 * RTE_ETHER_ADDR_LEN + 1159 sizeof(uc->entries)); 1160 uc->entries = 0; 1161 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1162 sizeof(mc->entries)); 1163 mc->entries = 0; 1164 1165 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1166 const struct rte_ether_addr *addr 1167 = (i == index) ? mac_addr : addrs + i; 1168 struct virtio_net_ctrl_mac *tbl 1169 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1170 1171 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1172 } 1173 1174 return virtio_mac_table_set(hw, uc, mc); 1175 } 1176 1177 static void 1178 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1179 { 1180 struct virtio_hw *hw = dev->data->dev_private; 1181 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1182 struct virtio_net_ctrl_mac *uc, *mc; 1183 unsigned int i; 1184 1185 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1186 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1187 return; 1188 } 1189 1190 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1191 sizeof(uc->entries)); 1192 uc->entries = 0; 1193 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1194 sizeof(mc->entries)); 1195 mc->entries = 0; 1196 1197 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1198 struct virtio_net_ctrl_mac *tbl; 1199 1200 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1201 continue; 1202 1203 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1204 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1205 RTE_ETHER_ADDR_LEN); 1206 } 1207 1208 virtio_mac_table_set(hw, uc, mc); 1209 } 1210 1211 static int 1212 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1213 { 1214 struct virtio_hw *hw = dev->data->dev_private; 1215 1216 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1217 1218 /* Use atomic update if available */ 1219 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1220 struct virtio_pmd_ctrl ctrl; 1221 int len = RTE_ETHER_ADDR_LEN; 1222 1223 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1224 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1225 1226 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1227 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1228 } 1229 1230 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1231 return -ENOTSUP; 1232 1233 virtio_set_hwaddr(hw); 1234 return 0; 1235 } 1236 1237 static int 1238 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1239 { 1240 struct virtio_hw *hw = dev->data->dev_private; 1241 struct virtio_pmd_ctrl ctrl; 1242 int len; 1243 1244 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1245 return -ENOTSUP; 1246 1247 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1248 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1249 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1250 len = sizeof(vlan_id); 1251 1252 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1253 } 1254 1255 static int 1256 virtio_intr_enable(struct rte_eth_dev *dev) 1257 { 1258 struct virtio_hw *hw = dev->data->dev_private; 1259 1260 if (rte_intr_enable(dev->intr_handle) < 0) 1261 return -1; 1262 1263 if (!hw->virtio_user_dev) 1264 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1265 1266 return 0; 1267 } 1268 1269 static int 1270 virtio_intr_disable(struct rte_eth_dev *dev) 1271 { 1272 struct virtio_hw *hw = dev->data->dev_private; 1273 1274 if (rte_intr_disable(dev->intr_handle) < 0) 1275 return -1; 1276 1277 if (!hw->virtio_user_dev) 1278 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1279 1280 return 0; 1281 } 1282 1283 static int 1284 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1285 { 1286 uint64_t host_features; 1287 1288 /* Prepare guest_features: feature that driver wants to support */ 1289 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1290 req_features); 1291 1292 /* Read device(host) feature bits */ 1293 host_features = VTPCI_OPS(hw)->get_features(hw); 1294 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1295 host_features); 1296 1297 /* If supported, ensure MTU value is valid before acknowledging it. */ 1298 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1299 struct virtio_net_config config; 1300 1301 vtpci_read_dev_config(hw, 1302 offsetof(struct virtio_net_config, mtu), 1303 &config.mtu, sizeof(config.mtu)); 1304 1305 if (config.mtu < RTE_ETHER_MIN_MTU) 1306 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1307 } 1308 1309 /* 1310 * Negotiate features: Subset of device feature bits are written back 1311 * guest feature bits. 1312 */ 1313 hw->guest_features = req_features; 1314 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1315 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1316 hw->guest_features); 1317 1318 if (hw->modern) { 1319 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1320 PMD_INIT_LOG(ERR, 1321 "VIRTIO_F_VERSION_1 features is not enabled."); 1322 return -1; 1323 } 1324 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1325 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1326 PMD_INIT_LOG(ERR, 1327 "failed to set FEATURES_OK status!"); 1328 return -1; 1329 } 1330 } 1331 1332 hw->req_guest_features = req_features; 1333 1334 return 0; 1335 } 1336 1337 int 1338 virtio_dev_pause(struct rte_eth_dev *dev) 1339 { 1340 struct virtio_hw *hw = dev->data->dev_private; 1341 1342 rte_spinlock_lock(&hw->state_lock); 1343 1344 if (hw->started == 0) { 1345 /* Device is just stopped. */ 1346 rte_spinlock_unlock(&hw->state_lock); 1347 return -1; 1348 } 1349 hw->started = 0; 1350 /* 1351 * Prevent the worker threads from touching queues to avoid contention, 1352 * 1 ms should be enough for the ongoing Tx function to finish. 1353 */ 1354 rte_delay_ms(1); 1355 return 0; 1356 } 1357 1358 /* 1359 * Recover hw state to let the worker threads continue. 1360 */ 1361 void 1362 virtio_dev_resume(struct rte_eth_dev *dev) 1363 { 1364 struct virtio_hw *hw = dev->data->dev_private; 1365 1366 hw->started = 1; 1367 rte_spinlock_unlock(&hw->state_lock); 1368 } 1369 1370 /* 1371 * Should be called only after device is paused. 1372 */ 1373 int 1374 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1375 int nb_pkts) 1376 { 1377 struct virtio_hw *hw = dev->data->dev_private; 1378 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1379 int ret; 1380 1381 hw->inject_pkts = tx_pkts; 1382 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1383 hw->inject_pkts = NULL; 1384 1385 return ret; 1386 } 1387 1388 static void 1389 virtio_notify_peers(struct rte_eth_dev *dev) 1390 { 1391 struct virtio_hw *hw = dev->data->dev_private; 1392 struct virtnet_rx *rxvq; 1393 struct rte_mbuf *rarp_mbuf; 1394 1395 if (!dev->data->rx_queues) 1396 return; 1397 1398 rxvq = dev->data->rx_queues[0]; 1399 if (!rxvq) 1400 return; 1401 1402 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1403 (struct rte_ether_addr *)hw->mac_addr); 1404 if (rarp_mbuf == NULL) { 1405 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1406 return; 1407 } 1408 1409 /* If virtio port just stopped, no need to send RARP */ 1410 if (virtio_dev_pause(dev) < 0) { 1411 rte_pktmbuf_free(rarp_mbuf); 1412 return; 1413 } 1414 1415 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1416 virtio_dev_resume(dev); 1417 } 1418 1419 static void 1420 virtio_ack_link_announce(struct rte_eth_dev *dev) 1421 { 1422 struct virtio_hw *hw = dev->data->dev_private; 1423 struct virtio_pmd_ctrl ctrl; 1424 1425 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1426 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1427 1428 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1429 } 1430 1431 /* 1432 * Process virtio config changed interrupt. Call the callback 1433 * if link state changed, generate gratuitous RARP packet if 1434 * the status indicates an ANNOUNCE. 1435 */ 1436 void 1437 virtio_interrupt_handler(void *param) 1438 { 1439 struct rte_eth_dev *dev = param; 1440 struct virtio_hw *hw = dev->data->dev_private; 1441 uint8_t isr; 1442 uint16_t status; 1443 1444 /* Read interrupt status which clears interrupt */ 1445 isr = vtpci_isr(hw); 1446 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1447 1448 if (virtio_intr_enable(dev) < 0) 1449 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1450 1451 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1452 if (virtio_dev_link_update(dev, 0) == 0) 1453 _rte_eth_dev_callback_process(dev, 1454 RTE_ETH_EVENT_INTR_LSC, 1455 NULL); 1456 1457 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1458 vtpci_read_dev_config(hw, 1459 offsetof(struct virtio_net_config, status), 1460 &status, sizeof(status)); 1461 if (status & VIRTIO_NET_S_ANNOUNCE) { 1462 virtio_notify_peers(dev); 1463 if (hw->cvq) 1464 virtio_ack_link_announce(dev); 1465 } 1466 } 1467 } 1468 } 1469 1470 /* set rx and tx handlers according to what is supported */ 1471 static void 1472 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1473 { 1474 struct virtio_hw *hw = eth_dev->data->dev_private; 1475 1476 if (vtpci_packed_queue(hw)) { 1477 PMD_INIT_LOG(INFO, 1478 "virtio: using packed ring %s Tx path on port %u", 1479 hw->use_inorder_tx ? "inorder" : "standard", 1480 eth_dev->data->port_id); 1481 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1482 } else { 1483 if (hw->use_inorder_tx) { 1484 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1485 eth_dev->data->port_id); 1486 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1487 } else { 1488 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1489 eth_dev->data->port_id); 1490 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1491 } 1492 } 1493 1494 if (vtpci_packed_queue(hw)) { 1495 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1496 PMD_INIT_LOG(INFO, 1497 "virtio: using packed ring mergeable buffer Rx path on port %u", 1498 eth_dev->data->port_id); 1499 eth_dev->rx_pkt_burst = 1500 &virtio_recv_mergeable_pkts_packed; 1501 } else { 1502 PMD_INIT_LOG(INFO, 1503 "virtio: using packed ring standard Rx path on port %u", 1504 eth_dev->data->port_id); 1505 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1506 } 1507 } else { 1508 if (hw->use_simple_rx) { 1509 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", 1510 eth_dev->data->port_id); 1511 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1512 } else if (hw->use_inorder_rx) { 1513 PMD_INIT_LOG(INFO, 1514 "virtio: using inorder Rx path on port %u", 1515 eth_dev->data->port_id); 1516 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1517 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1518 PMD_INIT_LOG(INFO, 1519 "virtio: using mergeable buffer Rx path on port %u", 1520 eth_dev->data->port_id); 1521 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1522 } else { 1523 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1524 eth_dev->data->port_id); 1525 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1526 } 1527 } 1528 1529 } 1530 1531 /* Only support 1:1 queue/interrupt mapping so far. 1532 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1533 * interrupt vectors (<N+1). 1534 */ 1535 static int 1536 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1537 { 1538 uint32_t i; 1539 struct virtio_hw *hw = dev->data->dev_private; 1540 1541 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1542 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1543 dev->intr_handle->intr_vec[i] = i + 1; 1544 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1545 VIRTIO_MSI_NO_VECTOR) { 1546 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1547 return -EBUSY; 1548 } 1549 } 1550 1551 return 0; 1552 } 1553 1554 static void 1555 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1556 { 1557 uint32_t i; 1558 struct virtio_hw *hw = dev->data->dev_private; 1559 1560 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1561 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1562 VTPCI_OPS(hw)->set_queue_irq(hw, 1563 hw->vqs[i * VTNET_CQ], 1564 VIRTIO_MSI_NO_VECTOR); 1565 } 1566 1567 static int 1568 virtio_configure_intr(struct rte_eth_dev *dev) 1569 { 1570 struct virtio_hw *hw = dev->data->dev_private; 1571 1572 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1573 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1574 return -ENOTSUP; 1575 } 1576 1577 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1578 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1579 return -1; 1580 } 1581 1582 if (!dev->intr_handle->intr_vec) { 1583 dev->intr_handle->intr_vec = 1584 rte_zmalloc("intr_vec", 1585 hw->max_queue_pairs * sizeof(int), 0); 1586 if (!dev->intr_handle->intr_vec) { 1587 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1588 hw->max_queue_pairs); 1589 return -ENOMEM; 1590 } 1591 } 1592 1593 /* Re-register callback to update max_intr */ 1594 rte_intr_callback_unregister(dev->intr_handle, 1595 virtio_interrupt_handler, 1596 dev); 1597 rte_intr_callback_register(dev->intr_handle, 1598 virtio_interrupt_handler, 1599 dev); 1600 1601 /* DO NOT try to remove this! This function will enable msix, or QEMU 1602 * will encounter SIGSEGV when DRIVER_OK is sent. 1603 * And for legacy devices, this should be done before queue/vec binding 1604 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1605 * (22) will be ignored. 1606 */ 1607 if (virtio_intr_enable(dev) < 0) { 1608 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1609 return -1; 1610 } 1611 1612 if (virtio_queues_bind_intr(dev) < 0) { 1613 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1614 return -1; 1615 } 1616 1617 return 0; 1618 } 1619 1620 /* reset device and renegotiate features if needed */ 1621 static int 1622 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1623 { 1624 struct virtio_hw *hw = eth_dev->data->dev_private; 1625 struct virtio_net_config *config; 1626 struct virtio_net_config local_config; 1627 struct rte_pci_device *pci_dev = NULL; 1628 int ret; 1629 1630 /* Reset the device although not necessary at startup */ 1631 vtpci_reset(hw); 1632 1633 if (hw->vqs) { 1634 virtio_dev_free_mbufs(eth_dev); 1635 virtio_free_queues(hw); 1636 } 1637 1638 /* Tell the host we've noticed this device. */ 1639 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1640 1641 /* Tell the host we've known how to drive the device. */ 1642 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1643 if (virtio_negotiate_features(hw, req_features) < 0) 1644 return -1; 1645 1646 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1647 1648 if (!hw->virtio_user_dev) { 1649 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1650 rte_eth_copy_pci_info(eth_dev, pci_dev); 1651 } 1652 1653 /* If host does not support both status and MSI-X then disable LSC */ 1654 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1655 hw->use_msix != VIRTIO_MSIX_NONE) 1656 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1657 else 1658 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1659 1660 /* Setting up rx_header size for the device */ 1661 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1662 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1663 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1664 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1665 else 1666 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1667 1668 /* Copy the permanent MAC address to: virtio_hw */ 1669 virtio_get_hwaddr(hw); 1670 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1671 ð_dev->data->mac_addrs[0]); 1672 PMD_INIT_LOG(DEBUG, 1673 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1674 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1675 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1676 1677 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1678 config = &local_config; 1679 1680 vtpci_read_dev_config(hw, 1681 offsetof(struct virtio_net_config, mac), 1682 &config->mac, sizeof(config->mac)); 1683 1684 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1685 vtpci_read_dev_config(hw, 1686 offsetof(struct virtio_net_config, status), 1687 &config->status, sizeof(config->status)); 1688 } else { 1689 PMD_INIT_LOG(DEBUG, 1690 "VIRTIO_NET_F_STATUS is not supported"); 1691 config->status = 0; 1692 } 1693 1694 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1695 vtpci_read_dev_config(hw, 1696 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1697 &config->max_virtqueue_pairs, 1698 sizeof(config->max_virtqueue_pairs)); 1699 } else { 1700 PMD_INIT_LOG(DEBUG, 1701 "VIRTIO_NET_F_MQ is not supported"); 1702 config->max_virtqueue_pairs = 1; 1703 } 1704 1705 hw->max_queue_pairs = config->max_virtqueue_pairs; 1706 1707 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1708 vtpci_read_dev_config(hw, 1709 offsetof(struct virtio_net_config, mtu), 1710 &config->mtu, 1711 sizeof(config->mtu)); 1712 1713 /* 1714 * MTU value has already been checked at negotiation 1715 * time, but check again in case it has changed since 1716 * then, which should not happen. 1717 */ 1718 if (config->mtu < RTE_ETHER_MIN_MTU) { 1719 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1720 config->mtu); 1721 return -1; 1722 } 1723 1724 hw->max_mtu = config->mtu; 1725 /* Set initial MTU to maximum one supported by vhost */ 1726 eth_dev->data->mtu = config->mtu; 1727 1728 } else { 1729 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1730 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1731 } 1732 1733 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1734 config->max_virtqueue_pairs); 1735 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1736 PMD_INIT_LOG(DEBUG, 1737 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1738 config->mac[0], config->mac[1], 1739 config->mac[2], config->mac[3], 1740 config->mac[4], config->mac[5]); 1741 } else { 1742 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1743 hw->max_queue_pairs = 1; 1744 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1745 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1746 } 1747 1748 ret = virtio_alloc_queues(eth_dev); 1749 if (ret < 0) 1750 return ret; 1751 1752 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1753 if (virtio_configure_intr(eth_dev) < 0) { 1754 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1755 return -1; 1756 } 1757 } 1758 1759 vtpci_reinit_complete(hw); 1760 1761 if (pci_dev) 1762 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1763 eth_dev->data->port_id, pci_dev->id.vendor_id, 1764 pci_dev->id.device_id); 1765 1766 return 0; 1767 } 1768 1769 /* 1770 * Remap the PCI device again (IO port map for legacy device and 1771 * memory map for modern device), so that the secondary process 1772 * could have the PCI initiated correctly. 1773 */ 1774 static int 1775 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1776 { 1777 if (hw->modern) { 1778 /* 1779 * We don't have to re-parse the PCI config space, since 1780 * rte_pci_map_device() makes sure the mapped address 1781 * in secondary process would equal to the one mapped in 1782 * the primary process: error will be returned if that 1783 * requirement is not met. 1784 * 1785 * That said, we could simply reuse all cap pointers 1786 * (such as dev_cfg, common_cfg, etc.) parsed from the 1787 * primary process, which is stored in shared memory. 1788 */ 1789 if (rte_pci_map_device(pci_dev)) { 1790 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1791 return -1; 1792 } 1793 } else { 1794 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1795 return -1; 1796 } 1797 1798 return 0; 1799 } 1800 1801 static void 1802 virtio_set_vtpci_ops(struct virtio_hw *hw) 1803 { 1804 #ifdef RTE_VIRTIO_USER 1805 if (hw->virtio_user_dev) 1806 VTPCI_OPS(hw) = &virtio_user_ops; 1807 else 1808 #endif 1809 if (hw->modern) 1810 VTPCI_OPS(hw) = &modern_ops; 1811 else 1812 VTPCI_OPS(hw) = &legacy_ops; 1813 } 1814 1815 /* 1816 * This function is based on probe() function in virtio_pci.c 1817 * It returns 0 on success. 1818 */ 1819 int 1820 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1821 { 1822 struct virtio_hw *hw = eth_dev->data->dev_private; 1823 int ret; 1824 1825 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); 1826 1827 eth_dev->dev_ops = &virtio_eth_dev_ops; 1828 1829 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1830 if (!hw->virtio_user_dev) { 1831 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1832 if (ret) 1833 return ret; 1834 } 1835 1836 virtio_set_vtpci_ops(hw); 1837 set_rxtx_funcs(eth_dev); 1838 1839 return 0; 1840 } 1841 1842 /* Allocate memory for storing MAC addresses */ 1843 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1844 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1845 if (eth_dev->data->mac_addrs == NULL) { 1846 PMD_INIT_LOG(ERR, 1847 "Failed to allocate %d bytes needed to store MAC addresses", 1848 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1849 return -ENOMEM; 1850 } 1851 1852 hw->port_id = eth_dev->data->port_id; 1853 /* For virtio_user case the hw->virtio_user_dev is populated by 1854 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1855 */ 1856 if (!hw->virtio_user_dev) { 1857 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1858 if (ret) 1859 goto out; 1860 } 1861 1862 /* reset device and negotiate default features */ 1863 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1864 if (ret < 0) 1865 goto out; 1866 1867 return 0; 1868 1869 out: 1870 rte_free(eth_dev->data->mac_addrs); 1871 eth_dev->data->mac_addrs = NULL; 1872 return ret; 1873 } 1874 1875 static int 1876 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1877 { 1878 PMD_INIT_FUNC_TRACE(); 1879 1880 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1881 return 0; 1882 1883 virtio_dev_stop(eth_dev); 1884 virtio_dev_close(eth_dev); 1885 1886 eth_dev->dev_ops = NULL; 1887 eth_dev->tx_pkt_burst = NULL; 1888 eth_dev->rx_pkt_burst = NULL; 1889 1890 if (eth_dev->device) 1891 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1892 1893 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 1894 1895 return 0; 1896 } 1897 1898 static int vdpa_check_handler(__rte_unused const char *key, 1899 const char *value, __rte_unused void *opaque) 1900 { 1901 if (strcmp(value, "1")) 1902 return -1; 1903 1904 return 0; 1905 } 1906 1907 static int 1908 vdpa_mode_selected(struct rte_devargs *devargs) 1909 { 1910 struct rte_kvargs *kvlist; 1911 const char *key = "vdpa"; 1912 int ret = 0; 1913 1914 if (devargs == NULL) 1915 return 0; 1916 1917 kvlist = rte_kvargs_parse(devargs->args, NULL); 1918 if (kvlist == NULL) 1919 return 0; 1920 1921 if (!rte_kvargs_count(kvlist, key)) 1922 goto exit; 1923 1924 /* vdpa mode selected when there's a key-value pair: vdpa=1 */ 1925 if (rte_kvargs_process(kvlist, key, 1926 vdpa_check_handler, NULL) < 0) { 1927 goto exit; 1928 } 1929 ret = 1; 1930 1931 exit: 1932 rte_kvargs_free(kvlist); 1933 return ret; 1934 } 1935 1936 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1937 struct rte_pci_device *pci_dev) 1938 { 1939 if (rte_eal_iopl_init() != 0) { 1940 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD"); 1941 return 1; 1942 } 1943 1944 /* virtio pmd skips probe if device needs to work in vdpa mode */ 1945 if (vdpa_mode_selected(pci_dev->device.devargs)) 1946 return 1; 1947 1948 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 1949 eth_virtio_dev_init); 1950 } 1951 1952 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 1953 { 1954 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 1955 } 1956 1957 static struct rte_pci_driver rte_virtio_pmd = { 1958 .driver = { 1959 .name = "net_virtio", 1960 }, 1961 .id_table = pci_id_virtio_map, 1962 .drv_flags = 0, 1963 .probe = eth_virtio_pci_probe, 1964 .remove = eth_virtio_pci_remove, 1965 }; 1966 1967 RTE_INIT(rte_virtio_pmd_init) 1968 { 1969 rte_eal_iopl_init(); 1970 rte_pci_register(&rte_virtio_pmd); 1971 } 1972 1973 static bool 1974 rx_offload_enabled(struct virtio_hw *hw) 1975 { 1976 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 1977 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 1978 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 1979 } 1980 1981 static bool 1982 tx_offload_enabled(struct virtio_hw *hw) 1983 { 1984 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 1985 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 1986 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 1987 } 1988 1989 /* 1990 * Configure virtio device 1991 * It returns 0 on success. 1992 */ 1993 static int 1994 virtio_dev_configure(struct rte_eth_dev *dev) 1995 { 1996 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 1997 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 1998 struct virtio_hw *hw = dev->data->dev_private; 1999 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2000 hw->vtnet_hdr_size; 2001 uint64_t rx_offloads = rxmode->offloads; 2002 uint64_t tx_offloads = txmode->offloads; 2003 uint64_t req_features; 2004 int ret; 2005 2006 PMD_INIT_LOG(DEBUG, "configure"); 2007 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2008 2009 if (dev->data->dev_conf.intr_conf.rxq) { 2010 ret = virtio_init_device(dev, hw->req_guest_features); 2011 if (ret < 0) 2012 return ret; 2013 } 2014 2015 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2016 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2017 2018 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2019 DEV_RX_OFFLOAD_TCP_CKSUM)) 2020 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2021 2022 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2023 req_features |= 2024 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2025 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2026 2027 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2028 DEV_TX_OFFLOAD_TCP_CKSUM)) 2029 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2030 2031 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2032 req_features |= 2033 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2034 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2035 2036 /* if request features changed, reinit the device */ 2037 if (req_features != hw->req_guest_features) { 2038 ret = virtio_init_device(dev, req_features); 2039 if (ret < 0) 2040 return ret; 2041 } 2042 2043 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2044 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2045 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2046 PMD_DRV_LOG(ERR, 2047 "rx checksum not available on this host"); 2048 return -ENOTSUP; 2049 } 2050 2051 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2052 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2053 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2054 PMD_DRV_LOG(ERR, 2055 "Large Receive Offload not available on this host"); 2056 return -ENOTSUP; 2057 } 2058 2059 /* start control queue */ 2060 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2061 virtio_dev_cq_start(dev); 2062 2063 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2064 hw->vlan_strip = 1; 2065 2066 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2067 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2068 PMD_DRV_LOG(ERR, 2069 "vlan filtering not available on this host"); 2070 return -ENOTSUP; 2071 } 2072 2073 hw->has_tx_offload = tx_offload_enabled(hw); 2074 hw->has_rx_offload = rx_offload_enabled(hw); 2075 2076 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2077 /* Enable vector (0) for Link State Intrerrupt */ 2078 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2079 VIRTIO_MSI_NO_VECTOR) { 2080 PMD_DRV_LOG(ERR, "failed to set config vector"); 2081 return -EBUSY; 2082 } 2083 2084 rte_spinlock_init(&hw->state_lock); 2085 2086 hw->use_simple_rx = 1; 2087 2088 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2089 hw->use_inorder_tx = 1; 2090 hw->use_inorder_rx = 1; 2091 hw->use_simple_rx = 0; 2092 } 2093 2094 if (vtpci_packed_queue(hw)) { 2095 hw->use_simple_rx = 0; 2096 hw->use_inorder_rx = 0; 2097 } 2098 2099 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2100 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2101 hw->use_simple_rx = 0; 2102 } 2103 #endif 2104 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2105 hw->use_simple_rx = 0; 2106 } 2107 2108 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2109 DEV_RX_OFFLOAD_TCP_CKSUM | 2110 DEV_RX_OFFLOAD_TCP_LRO | 2111 DEV_RX_OFFLOAD_VLAN_STRIP)) 2112 hw->use_simple_rx = 0; 2113 2114 hw->opened = true; 2115 2116 return 0; 2117 } 2118 2119 2120 static int 2121 virtio_dev_start(struct rte_eth_dev *dev) 2122 { 2123 uint16_t nb_queues, i; 2124 struct virtnet_rx *rxvq; 2125 struct virtnet_tx *txvq __rte_unused; 2126 struct virtio_hw *hw = dev->data->dev_private; 2127 int ret; 2128 2129 /* Finish the initialization of the queues */ 2130 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2131 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2132 if (ret < 0) 2133 return ret; 2134 } 2135 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2136 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2137 if (ret < 0) 2138 return ret; 2139 } 2140 2141 /* check if lsc interrupt feature is enabled */ 2142 if (dev->data->dev_conf.intr_conf.lsc) { 2143 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2144 PMD_DRV_LOG(ERR, "link status not supported by host"); 2145 return -ENOTSUP; 2146 } 2147 } 2148 2149 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2150 * in device configure, but it could be unmapped when device is 2151 * stopped. 2152 */ 2153 if (dev->data->dev_conf.intr_conf.lsc || 2154 dev->data->dev_conf.intr_conf.rxq) { 2155 virtio_intr_disable(dev); 2156 2157 /* Setup interrupt callback */ 2158 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2159 rte_intr_callback_register(dev->intr_handle, 2160 virtio_interrupt_handler, 2161 dev); 2162 2163 if (virtio_intr_enable(dev) < 0) { 2164 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2165 return -EIO; 2166 } 2167 } 2168 2169 /*Notify the backend 2170 *Otherwise the tap backend might already stop its queue due to fullness. 2171 *vhost backend will have no chance to be waked up 2172 */ 2173 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2174 if (hw->max_queue_pairs > 1) { 2175 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2176 return -EINVAL; 2177 } 2178 2179 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2180 2181 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2182 rxvq = dev->data->rx_queues[i]; 2183 /* Flush the old packets */ 2184 virtqueue_rxvq_flush(rxvq->vq); 2185 virtqueue_notify(rxvq->vq); 2186 } 2187 2188 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2189 txvq = dev->data->tx_queues[i]; 2190 virtqueue_notify(txvq->vq); 2191 } 2192 2193 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2194 2195 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2196 rxvq = dev->data->rx_queues[i]; 2197 VIRTQUEUE_DUMP(rxvq->vq); 2198 } 2199 2200 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2201 txvq = dev->data->tx_queues[i]; 2202 VIRTQUEUE_DUMP(txvq->vq); 2203 } 2204 2205 set_rxtx_funcs(dev); 2206 hw->started = true; 2207 2208 /* Initialize Link state */ 2209 virtio_dev_link_update(dev, 0); 2210 2211 return 0; 2212 } 2213 2214 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2215 { 2216 struct virtio_hw *hw = dev->data->dev_private; 2217 uint16_t nr_vq = virtio_get_nr_vq(hw); 2218 const char *type __rte_unused; 2219 unsigned int i, mbuf_num = 0; 2220 struct virtqueue *vq; 2221 struct rte_mbuf *buf; 2222 int queue_type; 2223 2224 if (hw->vqs == NULL) 2225 return; 2226 2227 for (i = 0; i < nr_vq; i++) { 2228 vq = hw->vqs[i]; 2229 if (!vq) 2230 continue; 2231 2232 queue_type = virtio_get_queue_type(hw, i); 2233 if (queue_type == VTNET_RQ) 2234 type = "rxq"; 2235 else if (queue_type == VTNET_TQ) 2236 type = "txq"; 2237 else 2238 continue; 2239 2240 PMD_INIT_LOG(DEBUG, 2241 "Before freeing %s[%d] used and unused buf", 2242 type, i); 2243 VIRTQUEUE_DUMP(vq); 2244 2245 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2246 rte_pktmbuf_free(buf); 2247 mbuf_num++; 2248 } 2249 2250 PMD_INIT_LOG(DEBUG, 2251 "After freeing %s[%d] used and unused buf", 2252 type, i); 2253 VIRTQUEUE_DUMP(vq); 2254 } 2255 2256 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2257 } 2258 2259 /* 2260 * Stop device: disable interrupt and mark link down 2261 */ 2262 static void 2263 virtio_dev_stop(struct rte_eth_dev *dev) 2264 { 2265 struct virtio_hw *hw = dev->data->dev_private; 2266 struct rte_eth_link link; 2267 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2268 2269 PMD_INIT_LOG(DEBUG, "stop"); 2270 2271 rte_spinlock_lock(&hw->state_lock); 2272 if (!hw->started) 2273 goto out_unlock; 2274 hw->started = false; 2275 2276 if (intr_conf->lsc || intr_conf->rxq) { 2277 virtio_intr_disable(dev); 2278 2279 /* Reset interrupt callback */ 2280 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2281 rte_intr_callback_unregister(dev->intr_handle, 2282 virtio_interrupt_handler, 2283 dev); 2284 } 2285 } 2286 2287 memset(&link, 0, sizeof(link)); 2288 rte_eth_linkstatus_set(dev, &link); 2289 out_unlock: 2290 rte_spinlock_unlock(&hw->state_lock); 2291 } 2292 2293 static int 2294 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2295 { 2296 struct rte_eth_link link; 2297 uint16_t status; 2298 struct virtio_hw *hw = dev->data->dev_private; 2299 2300 memset(&link, 0, sizeof(link)); 2301 link.link_duplex = ETH_LINK_FULL_DUPLEX; 2302 link.link_speed = ETH_SPEED_NUM_10G; 2303 link.link_autoneg = ETH_LINK_FIXED; 2304 2305 if (!hw->started) { 2306 link.link_status = ETH_LINK_DOWN; 2307 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2308 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2309 vtpci_read_dev_config(hw, 2310 offsetof(struct virtio_net_config, status), 2311 &status, sizeof(status)); 2312 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2313 link.link_status = ETH_LINK_DOWN; 2314 PMD_INIT_LOG(DEBUG, "Port %d is down", 2315 dev->data->port_id); 2316 } else { 2317 link.link_status = ETH_LINK_UP; 2318 PMD_INIT_LOG(DEBUG, "Port %d is up", 2319 dev->data->port_id); 2320 } 2321 } else { 2322 link.link_status = ETH_LINK_UP; 2323 } 2324 2325 return rte_eth_linkstatus_set(dev, &link); 2326 } 2327 2328 static int 2329 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2330 { 2331 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2332 struct virtio_hw *hw = dev->data->dev_private; 2333 uint64_t offloads = rxmode->offloads; 2334 2335 if (mask & ETH_VLAN_FILTER_MASK) { 2336 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2337 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2338 2339 PMD_DRV_LOG(NOTICE, 2340 "vlan filtering not available on this host"); 2341 2342 return -ENOTSUP; 2343 } 2344 } 2345 2346 if (mask & ETH_VLAN_STRIP_MASK) 2347 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2348 2349 return 0; 2350 } 2351 2352 static void 2353 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2354 { 2355 uint64_t tso_mask, host_features; 2356 struct virtio_hw *hw = dev->data->dev_private; 2357 2358 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */ 2359 2360 dev_info->max_rx_queues = 2361 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2362 dev_info->max_tx_queues = 2363 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2364 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2365 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2366 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2367 2368 host_features = VTPCI_OPS(hw)->get_features(hw); 2369 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2370 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2371 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2372 dev_info->rx_offload_capa |= 2373 DEV_RX_OFFLOAD_TCP_CKSUM | 2374 DEV_RX_OFFLOAD_UDP_CKSUM; 2375 } 2376 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2377 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2378 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2379 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2380 if ((host_features & tso_mask) == tso_mask) 2381 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2382 2383 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2384 DEV_TX_OFFLOAD_VLAN_INSERT; 2385 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2386 dev_info->tx_offload_capa |= 2387 DEV_TX_OFFLOAD_UDP_CKSUM | 2388 DEV_TX_OFFLOAD_TCP_CKSUM; 2389 } 2390 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2391 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2392 if ((host_features & tso_mask) == tso_mask) 2393 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2394 } 2395 2396 /* 2397 * It enables testpmd to collect per queue stats. 2398 */ 2399 static int 2400 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2401 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2402 __rte_unused uint8_t is_rx) 2403 { 2404 return 0; 2405 } 2406 2407 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2408 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2409 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2410 2411 RTE_INIT(virtio_init_log) 2412 { 2413 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2414 if (virtio_logtype_init >= 0) 2415 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2416 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2417 if (virtio_logtype_driver >= 0) 2418 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2419 } 2420