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 #include "virtio_user/virtio_user_dev.h" 39 40 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev); 41 static int virtio_dev_configure(struct rte_eth_dev *dev); 42 static int virtio_dev_start(struct rte_eth_dev *dev); 43 static void virtio_dev_stop(struct rte_eth_dev *dev); 44 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev); 45 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev); 46 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev); 47 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev); 48 static uint32_t virtio_dev_speed_capa_get(uint32_t speed); 49 static int virtio_dev_devargs_parse(struct rte_devargs *devargs, 50 int *vdpa, 51 uint32_t *speed, 52 int *vectorized); 53 static int virtio_dev_info_get(struct rte_eth_dev *dev, 54 struct rte_eth_dev_info *dev_info); 55 static int virtio_dev_link_update(struct rte_eth_dev *dev, 56 int wait_to_complete); 57 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask); 58 59 static void virtio_set_hwaddr(struct virtio_hw *hw); 60 static void virtio_get_hwaddr(struct virtio_hw *hw); 61 62 static int virtio_dev_stats_get(struct rte_eth_dev *dev, 63 struct rte_eth_stats *stats); 64 static int virtio_dev_xstats_get(struct rte_eth_dev *dev, 65 struct rte_eth_xstat *xstats, unsigned n); 66 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 67 struct rte_eth_xstat_name *xstats_names, 68 unsigned limit); 69 static int virtio_dev_stats_reset(struct rte_eth_dev *dev); 70 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev); 71 static int virtio_vlan_filter_set(struct rte_eth_dev *dev, 72 uint16_t vlan_id, int on); 73 static int virtio_mac_addr_add(struct rte_eth_dev *dev, 74 struct rte_ether_addr *mac_addr, 75 uint32_t index, uint32_t vmdq); 76 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index); 77 static int virtio_mac_addr_set(struct rte_eth_dev *dev, 78 struct rte_ether_addr *mac_addr); 79 80 static int virtio_intr_disable(struct rte_eth_dev *dev); 81 82 static int virtio_dev_queue_stats_mapping_set( 83 struct rte_eth_dev *eth_dev, 84 uint16_t queue_id, 85 uint8_t stat_idx, 86 uint8_t is_rx); 87 88 int virtio_logtype_init; 89 int virtio_logtype_driver; 90 91 static void virtio_notify_peers(struct rte_eth_dev *dev); 92 static void virtio_ack_link_announce(struct rte_eth_dev *dev); 93 94 /* 95 * The set of PCI devices this driver supports 96 */ 97 static const struct rte_pci_id pci_id_virtio_map[] = { 98 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) }, 99 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) }, 100 { .vendor_id = 0, /* sentinel */ }, 101 }; 102 103 struct rte_virtio_xstats_name_off { 104 char name[RTE_ETH_XSTATS_NAME_SIZE]; 105 unsigned offset; 106 }; 107 108 /* [rt]x_qX_ is prepended to the name string here */ 109 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = { 110 {"good_packets", offsetof(struct virtnet_rx, stats.packets)}, 111 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)}, 112 {"errors", offsetof(struct virtnet_rx, stats.errors)}, 113 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)}, 114 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)}, 115 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])}, 116 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])}, 117 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])}, 118 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])}, 119 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])}, 120 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])}, 121 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])}, 122 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])}, 123 }; 124 125 /* [rt]x_qX_ is prepended to the name string here */ 126 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = { 127 {"good_packets", offsetof(struct virtnet_tx, stats.packets)}, 128 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)}, 129 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)}, 130 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)}, 131 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])}, 132 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])}, 133 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])}, 134 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])}, 135 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])}, 136 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])}, 137 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])}, 138 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])}, 139 }; 140 141 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \ 142 sizeof(rte_virtio_rxq_stat_strings[0])) 143 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \ 144 sizeof(rte_virtio_txq_stat_strings[0])) 145 146 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS]; 147 148 static struct virtio_pmd_ctrl * 149 virtio_send_command_packed(struct virtnet_ctl *cvq, 150 struct virtio_pmd_ctrl *ctrl, 151 int *dlen, int pkt_num) 152 { 153 struct virtqueue *vq = cvq->vq; 154 int head; 155 struct vring_packed_desc *desc = vq->vq_packed.ring.desc; 156 struct virtio_pmd_ctrl *result; 157 uint16_t flags; 158 int sum = 0; 159 int nb_descs = 0; 160 int k; 161 162 /* 163 * Format is enforced in qemu code: 164 * One TX packet for header; 165 * At least one TX packet per argument; 166 * One RX packet for ACK. 167 */ 168 head = vq->vq_avail_idx; 169 flags = vq->vq_packed.cached_flags; 170 desc[head].addr = cvq->virtio_net_hdr_mem; 171 desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 172 vq->vq_free_cnt--; 173 nb_descs++; 174 if (++vq->vq_avail_idx >= vq->vq_nentries) { 175 vq->vq_avail_idx -= vq->vq_nentries; 176 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 177 } 178 179 for (k = 0; k < pkt_num; k++) { 180 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 181 + sizeof(struct virtio_net_ctrl_hdr) 182 + sizeof(ctrl->status) + sizeof(uint8_t) * sum; 183 desc[vq->vq_avail_idx].len = dlen[k]; 184 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT | 185 vq->vq_packed.cached_flags; 186 sum += dlen[k]; 187 vq->vq_free_cnt--; 188 nb_descs++; 189 if (++vq->vq_avail_idx >= vq->vq_nentries) { 190 vq->vq_avail_idx -= vq->vq_nentries; 191 vq->vq_packed.cached_flags ^= 192 VRING_PACKED_DESC_F_AVAIL_USED; 193 } 194 } 195 196 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem 197 + sizeof(struct virtio_net_ctrl_hdr); 198 desc[vq->vq_avail_idx].len = sizeof(ctrl->status); 199 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE | 200 vq->vq_packed.cached_flags; 201 vq->vq_free_cnt--; 202 nb_descs++; 203 if (++vq->vq_avail_idx >= vq->vq_nentries) { 204 vq->vq_avail_idx -= vq->vq_nentries; 205 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED; 206 } 207 208 virtio_wmb(vq->hw->weak_barriers); 209 desc[head].flags = VRING_DESC_F_NEXT | flags; 210 211 virtio_wmb(vq->hw->weak_barriers); 212 virtqueue_notify(vq); 213 214 /* wait for used descriptors in virtqueue */ 215 while (!desc_is_used(&desc[head], vq)) 216 usleep(100); 217 218 virtio_rmb(vq->hw->weak_barriers); 219 220 /* now get used descriptors */ 221 vq->vq_free_cnt += nb_descs; 222 vq->vq_used_cons_idx += nb_descs; 223 if (vq->vq_used_cons_idx >= vq->vq_nentries) { 224 vq->vq_used_cons_idx -= vq->vq_nentries; 225 vq->vq_packed.used_wrap_counter ^= 1; 226 } 227 228 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n" 229 "vq->vq_avail_idx=%d\n" 230 "vq->vq_used_cons_idx=%d\n" 231 "vq->vq_packed.cached_flags=0x%x\n" 232 "vq->vq_packed.used_wrap_counter=%d\n", 233 vq->vq_free_cnt, 234 vq->vq_avail_idx, 235 vq->vq_used_cons_idx, 236 vq->vq_packed.cached_flags, 237 vq->vq_packed.used_wrap_counter); 238 239 result = cvq->virtio_net_hdr_mz->addr; 240 return result; 241 } 242 243 static struct virtio_pmd_ctrl * 244 virtio_send_command_split(struct virtnet_ctl *cvq, 245 struct virtio_pmd_ctrl *ctrl, 246 int *dlen, int pkt_num) 247 { 248 struct virtio_pmd_ctrl *result; 249 struct virtqueue *vq = cvq->vq; 250 uint32_t head, i; 251 int k, sum = 0; 252 253 head = vq->vq_desc_head_idx; 254 255 /* 256 * Format is enforced in qemu code: 257 * One TX packet for header; 258 * At least one TX packet per argument; 259 * One RX packet for ACK. 260 */ 261 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT; 262 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem; 263 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr); 264 vq->vq_free_cnt--; 265 i = vq->vq_split.ring.desc[head].next; 266 267 for (k = 0; k < pkt_num; k++) { 268 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT; 269 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 270 + sizeof(struct virtio_net_ctrl_hdr) 271 + sizeof(ctrl->status) + sizeof(uint8_t)*sum; 272 vq->vq_split.ring.desc[i].len = dlen[k]; 273 sum += dlen[k]; 274 vq->vq_free_cnt--; 275 i = vq->vq_split.ring.desc[i].next; 276 } 277 278 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE; 279 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem 280 + sizeof(struct virtio_net_ctrl_hdr); 281 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status); 282 vq->vq_free_cnt--; 283 284 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next; 285 286 vq_update_avail_ring(vq, head); 287 vq_update_avail_idx(vq); 288 289 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index); 290 291 virtqueue_notify(vq); 292 293 while (virtqueue_nused(vq) == 0) 294 usleep(100); 295 296 while (virtqueue_nused(vq)) { 297 uint32_t idx, desc_idx, used_idx; 298 struct vring_used_elem *uep; 299 300 used_idx = (uint32_t)(vq->vq_used_cons_idx 301 & (vq->vq_nentries - 1)); 302 uep = &vq->vq_split.ring.used->ring[used_idx]; 303 idx = (uint32_t) uep->id; 304 desc_idx = idx; 305 306 while (vq->vq_split.ring.desc[desc_idx].flags & 307 VRING_DESC_F_NEXT) { 308 desc_idx = vq->vq_split.ring.desc[desc_idx].next; 309 vq->vq_free_cnt++; 310 } 311 312 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx; 313 vq->vq_desc_head_idx = idx; 314 315 vq->vq_used_cons_idx++; 316 vq->vq_free_cnt++; 317 } 318 319 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d", 320 vq->vq_free_cnt, vq->vq_desc_head_idx); 321 322 result = cvq->virtio_net_hdr_mz->addr; 323 return result; 324 } 325 326 static int 327 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl, 328 int *dlen, int pkt_num) 329 { 330 virtio_net_ctrl_ack status = ~0; 331 struct virtio_pmd_ctrl *result; 332 struct virtqueue *vq; 333 334 ctrl->status = status; 335 336 if (!cvq || !cvq->vq) { 337 PMD_INIT_LOG(ERR, "Control queue is not supported."); 338 return -1; 339 } 340 341 rte_spinlock_lock(&cvq->lock); 342 vq = cvq->vq; 343 344 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, " 345 "vq->hw->cvq = %p vq = %p", 346 vq->vq_desc_head_idx, status, vq->hw->cvq, vq); 347 348 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) { 349 rte_spinlock_unlock(&cvq->lock); 350 return -1; 351 } 352 353 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl, 354 sizeof(struct virtio_pmd_ctrl)); 355 356 if (vtpci_packed_queue(vq->hw)) 357 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num); 358 else 359 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num); 360 361 rte_spinlock_unlock(&cvq->lock); 362 return result->status; 363 } 364 365 static int 366 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues) 367 { 368 struct virtio_hw *hw = dev->data->dev_private; 369 struct virtio_pmd_ctrl ctrl; 370 int dlen[1]; 371 int ret; 372 373 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ; 374 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET; 375 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t)); 376 377 dlen[0] = sizeof(uint16_t); 378 379 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 380 if (ret) { 381 PMD_INIT_LOG(ERR, "Multiqueue configured but send command " 382 "failed, this is too late now..."); 383 return -EINVAL; 384 } 385 386 return 0; 387 } 388 389 static void 390 virtio_dev_queue_release(void *queue __rte_unused) 391 { 392 /* do nothing */ 393 } 394 395 static uint16_t 396 virtio_get_nr_vq(struct virtio_hw *hw) 397 { 398 uint16_t nr_vq = hw->max_queue_pairs * 2; 399 400 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 401 nr_vq += 1; 402 403 return nr_vq; 404 } 405 406 static void 407 virtio_init_vring(struct virtqueue *vq) 408 { 409 int size = vq->vq_nentries; 410 uint8_t *ring_mem = vq->vq_ring_virt_mem; 411 412 PMD_INIT_FUNC_TRACE(); 413 414 memset(ring_mem, 0, vq->vq_ring_size); 415 416 vq->vq_used_cons_idx = 0; 417 vq->vq_desc_head_idx = 0; 418 vq->vq_avail_idx = 0; 419 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1); 420 vq->vq_free_cnt = vq->vq_nentries; 421 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries); 422 if (vtpci_packed_queue(vq->hw)) { 423 vring_init_packed(&vq->vq_packed.ring, ring_mem, 424 VIRTIO_PCI_VRING_ALIGN, size); 425 vring_desc_init_packed(vq, size); 426 } else { 427 struct vring *vr = &vq->vq_split.ring; 428 429 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size); 430 vring_desc_init_split(vr->desc, size); 431 } 432 /* 433 * Disable device(host) interrupting guest 434 */ 435 virtqueue_disable_intr(vq); 436 } 437 438 static int 439 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx) 440 { 441 char vq_name[VIRTQUEUE_MAX_NAME_SZ]; 442 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ]; 443 const struct rte_memzone *mz = NULL, *hdr_mz = NULL; 444 unsigned int vq_size, size; 445 struct virtio_hw *hw = dev->data->dev_private; 446 struct virtnet_rx *rxvq = NULL; 447 struct virtnet_tx *txvq = NULL; 448 struct virtnet_ctl *cvq = NULL; 449 struct virtqueue *vq; 450 size_t sz_hdr_mz = 0; 451 void *sw_ring = NULL; 452 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx); 453 int ret; 454 int numa_node = dev->device->numa_node; 455 456 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d", 457 vtpci_queue_idx, numa_node); 458 459 /* 460 * Read the virtqueue size from the Queue Size field 461 * Always power of 2 and if 0 virtqueue does not exist 462 */ 463 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx); 464 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size); 465 if (vq_size == 0) { 466 PMD_INIT_LOG(ERR, "virtqueue does not exist"); 467 return -EINVAL; 468 } 469 470 if (!vtpci_packed_queue(hw) && !rte_is_power_of_2(vq_size)) { 471 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2"); 472 return -EINVAL; 473 } 474 475 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d", 476 dev->data->port_id, vtpci_queue_idx); 477 478 size = RTE_ALIGN_CEIL(sizeof(*vq) + 479 vq_size * sizeof(struct vq_desc_extra), 480 RTE_CACHE_LINE_SIZE); 481 if (queue_type == VTNET_TQ) { 482 /* 483 * For each xmit packet, allocate a virtio_net_hdr 484 * and indirect ring elements 485 */ 486 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region); 487 } else if (queue_type == VTNET_CQ) { 488 /* Allocate a page for control vq command, data and status */ 489 sz_hdr_mz = PAGE_SIZE; 490 } 491 492 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, 493 numa_node); 494 if (vq == NULL) { 495 PMD_INIT_LOG(ERR, "can not allocate vq"); 496 return -ENOMEM; 497 } 498 hw->vqs[vtpci_queue_idx] = vq; 499 500 vq->hw = hw; 501 vq->vq_queue_index = vtpci_queue_idx; 502 vq->vq_nentries = vq_size; 503 if (vtpci_packed_queue(hw)) { 504 vq->vq_packed.used_wrap_counter = 1; 505 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL; 506 vq->vq_packed.event_flags_shadow = 0; 507 if (queue_type == VTNET_RQ) 508 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE; 509 } 510 511 /* 512 * Reserve a memzone for vring elements 513 */ 514 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN); 515 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN); 516 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d", 517 size, vq->vq_ring_size); 518 519 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, 520 numa_node, RTE_MEMZONE_IOVA_CONTIG, 521 VIRTIO_PCI_VRING_ALIGN); 522 if (mz == NULL) { 523 if (rte_errno == EEXIST) 524 mz = rte_memzone_lookup(vq_name); 525 if (mz == NULL) { 526 ret = -ENOMEM; 527 goto fail_q_alloc; 528 } 529 } 530 531 memset(mz->addr, 0, mz->len); 532 533 vq->vq_ring_mem = mz->iova; 534 vq->vq_ring_virt_mem = mz->addr; 535 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64, 536 (uint64_t)mz->iova); 537 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64, 538 (uint64_t)(uintptr_t)mz->addr); 539 540 virtio_init_vring(vq); 541 542 if (sz_hdr_mz) { 543 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr", 544 dev->data->port_id, vtpci_queue_idx); 545 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz, 546 numa_node, RTE_MEMZONE_IOVA_CONTIG, 547 RTE_CACHE_LINE_SIZE); 548 if (hdr_mz == NULL) { 549 if (rte_errno == EEXIST) 550 hdr_mz = rte_memzone_lookup(vq_hdr_name); 551 if (hdr_mz == NULL) { 552 ret = -ENOMEM; 553 goto fail_q_alloc; 554 } 555 } 556 } 557 558 if (queue_type == VTNET_RQ) { 559 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) * 560 sizeof(vq->sw_ring[0]); 561 562 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw, 563 RTE_CACHE_LINE_SIZE, numa_node); 564 if (!sw_ring) { 565 PMD_INIT_LOG(ERR, "can not allocate RX soft ring"); 566 ret = -ENOMEM; 567 goto fail_q_alloc; 568 } 569 570 vq->sw_ring = sw_ring; 571 rxvq = &vq->rxq; 572 rxvq->vq = vq; 573 rxvq->port_id = dev->data->port_id; 574 rxvq->mz = mz; 575 } else if (queue_type == VTNET_TQ) { 576 txvq = &vq->txq; 577 txvq->vq = vq; 578 txvq->port_id = dev->data->port_id; 579 txvq->mz = mz; 580 txvq->virtio_net_hdr_mz = hdr_mz; 581 txvq->virtio_net_hdr_mem = hdr_mz->iova; 582 } else if (queue_type == VTNET_CQ) { 583 cvq = &vq->cq; 584 cvq->vq = vq; 585 cvq->mz = mz; 586 cvq->virtio_net_hdr_mz = hdr_mz; 587 cvq->virtio_net_hdr_mem = hdr_mz->iova; 588 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE); 589 590 hw->cvq = cvq; 591 } 592 593 /* For virtio_user case (that is when hw->virtio_user_dev is not NULL), 594 * we use virtual address. And we need properly set _offset_, please see 595 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information. 596 */ 597 if (!hw->virtio_user_dev) 598 vq->offset = offsetof(struct rte_mbuf, buf_iova); 599 else { 600 vq->vq_ring_mem = (uintptr_t)mz->addr; 601 vq->offset = offsetof(struct rte_mbuf, buf_addr); 602 if (queue_type == VTNET_TQ) 603 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 604 else if (queue_type == VTNET_CQ) 605 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr; 606 } 607 608 if (queue_type == VTNET_TQ) { 609 struct virtio_tx_region *txr; 610 unsigned int i; 611 612 txr = hdr_mz->addr; 613 memset(txr, 0, vq_size * sizeof(*txr)); 614 for (i = 0; i < vq_size; i++) { 615 struct vring_desc *start_dp = txr[i].tx_indir; 616 617 /* first indirect descriptor is always the tx header */ 618 if (!vtpci_packed_queue(hw)) { 619 vring_desc_init_split(start_dp, 620 RTE_DIM(txr[i].tx_indir)); 621 start_dp->addr = txvq->virtio_net_hdr_mem 622 + i * sizeof(*txr) 623 + offsetof(struct virtio_tx_region, 624 tx_hdr); 625 start_dp->len = hw->vtnet_hdr_size; 626 start_dp->flags = VRING_DESC_F_NEXT; 627 } 628 } 629 } 630 631 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) { 632 PMD_INIT_LOG(ERR, "setup_queue failed"); 633 return -EINVAL; 634 } 635 636 return 0; 637 638 fail_q_alloc: 639 rte_free(sw_ring); 640 rte_memzone_free(hdr_mz); 641 rte_memzone_free(mz); 642 rte_free(vq); 643 644 return ret; 645 } 646 647 static void 648 virtio_free_queues(struct virtio_hw *hw) 649 { 650 uint16_t nr_vq = virtio_get_nr_vq(hw); 651 struct virtqueue *vq; 652 int queue_type; 653 uint16_t i; 654 655 if (hw->vqs == NULL) 656 return; 657 658 for (i = 0; i < nr_vq; i++) { 659 vq = hw->vqs[i]; 660 if (!vq) 661 continue; 662 663 queue_type = virtio_get_queue_type(hw, i); 664 if (queue_type == VTNET_RQ) { 665 rte_free(vq->sw_ring); 666 rte_memzone_free(vq->rxq.mz); 667 } else if (queue_type == VTNET_TQ) { 668 rte_memzone_free(vq->txq.mz); 669 rte_memzone_free(vq->txq.virtio_net_hdr_mz); 670 } else { 671 rte_memzone_free(vq->cq.mz); 672 rte_memzone_free(vq->cq.virtio_net_hdr_mz); 673 } 674 675 rte_free(vq); 676 hw->vqs[i] = NULL; 677 } 678 679 rte_free(hw->vqs); 680 hw->vqs = NULL; 681 } 682 683 static int 684 virtio_alloc_queues(struct rte_eth_dev *dev) 685 { 686 struct virtio_hw *hw = dev->data->dev_private; 687 uint16_t nr_vq = virtio_get_nr_vq(hw); 688 uint16_t i; 689 int ret; 690 691 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0); 692 if (!hw->vqs) { 693 PMD_INIT_LOG(ERR, "failed to allocate vqs"); 694 return -ENOMEM; 695 } 696 697 for (i = 0; i < nr_vq; i++) { 698 ret = virtio_init_queue(dev, i); 699 if (ret < 0) { 700 virtio_free_queues(hw); 701 return ret; 702 } 703 } 704 705 return 0; 706 } 707 708 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev); 709 710 static void 711 virtio_dev_close(struct rte_eth_dev *dev) 712 { 713 struct virtio_hw *hw = dev->data->dev_private; 714 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 715 716 PMD_INIT_LOG(DEBUG, "virtio_dev_close"); 717 718 if (!hw->opened) 719 return; 720 hw->opened = false; 721 722 /* reset the NIC */ 723 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 724 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 725 if (intr_conf->rxq) 726 virtio_queues_unbind_intr(dev); 727 728 if (intr_conf->lsc || intr_conf->rxq) { 729 virtio_intr_disable(dev); 730 rte_intr_efd_disable(dev->intr_handle); 731 rte_free(dev->intr_handle->intr_vec); 732 dev->intr_handle->intr_vec = NULL; 733 } 734 735 vtpci_reset(hw); 736 virtio_dev_free_mbufs(dev); 737 virtio_free_queues(hw); 738 739 #ifdef RTE_VIRTIO_USER 740 if (hw->virtio_user_dev) 741 virtio_user_dev_uninit(hw->virtio_user_dev); 742 else 743 #endif 744 if (dev->device) { 745 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(dev)); 746 if (!hw->modern) 747 rte_pci_ioport_unmap(VTPCI_IO(hw)); 748 } 749 } 750 751 static int 752 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 753 { 754 struct virtio_hw *hw = dev->data->dev_private; 755 struct virtio_pmd_ctrl ctrl; 756 int dlen[1]; 757 int ret; 758 759 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 760 PMD_INIT_LOG(INFO, "host does not support rx control"); 761 return -ENOTSUP; 762 } 763 764 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 765 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 766 ctrl.data[0] = 1; 767 dlen[0] = 1; 768 769 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 770 if (ret) { 771 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 772 return -EAGAIN; 773 } 774 775 return 0; 776 } 777 778 static int 779 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 780 { 781 struct virtio_hw *hw = dev->data->dev_private; 782 struct virtio_pmd_ctrl ctrl; 783 int dlen[1]; 784 int ret; 785 786 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 787 PMD_INIT_LOG(INFO, "host does not support rx control"); 788 return -ENOTSUP; 789 } 790 791 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 792 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 793 ctrl.data[0] = 0; 794 dlen[0] = 1; 795 796 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 797 if (ret) { 798 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 799 return -EAGAIN; 800 } 801 802 return 0; 803 } 804 805 static int 806 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 807 { 808 struct virtio_hw *hw = dev->data->dev_private; 809 struct virtio_pmd_ctrl ctrl; 810 int dlen[1]; 811 int ret; 812 813 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 814 PMD_INIT_LOG(INFO, "host does not support rx control"); 815 return -ENOTSUP; 816 } 817 818 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 819 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 820 ctrl.data[0] = 1; 821 dlen[0] = 1; 822 823 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 824 if (ret) { 825 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 826 return -EAGAIN; 827 } 828 829 return 0; 830 } 831 832 static int 833 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 834 { 835 struct virtio_hw *hw = dev->data->dev_private; 836 struct virtio_pmd_ctrl ctrl; 837 int dlen[1]; 838 int ret; 839 840 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 841 PMD_INIT_LOG(INFO, "host does not support rx control"); 842 return -ENOTSUP; 843 } 844 845 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 846 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 847 ctrl.data[0] = 0; 848 dlen[0] = 1; 849 850 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 851 if (ret) { 852 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 853 return -EAGAIN; 854 } 855 856 return 0; 857 } 858 859 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 860 static int 861 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 862 { 863 struct virtio_hw *hw = dev->data->dev_private; 864 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 865 hw->vtnet_hdr_size; 866 uint32_t frame_size = mtu + ether_hdr_len; 867 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 868 869 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 870 871 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 872 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 873 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 874 return -EINVAL; 875 } 876 return 0; 877 } 878 879 static int 880 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 881 { 882 struct virtio_hw *hw = dev->data->dev_private; 883 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 884 struct virtqueue *vq = rxvq->vq; 885 886 virtqueue_enable_intr(vq); 887 virtio_mb(hw->weak_barriers); 888 return 0; 889 } 890 891 static int 892 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 893 { 894 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 895 struct virtqueue *vq = rxvq->vq; 896 897 virtqueue_disable_intr(vq); 898 return 0; 899 } 900 901 /* 902 * dev_ops for virtio, bare necessities for basic operation 903 */ 904 static const struct eth_dev_ops virtio_eth_dev_ops = { 905 .dev_configure = virtio_dev_configure, 906 .dev_start = virtio_dev_start, 907 .dev_stop = virtio_dev_stop, 908 .dev_close = virtio_dev_close, 909 .promiscuous_enable = virtio_dev_promiscuous_enable, 910 .promiscuous_disable = virtio_dev_promiscuous_disable, 911 .allmulticast_enable = virtio_dev_allmulticast_enable, 912 .allmulticast_disable = virtio_dev_allmulticast_disable, 913 .mtu_set = virtio_mtu_set, 914 .dev_infos_get = virtio_dev_info_get, 915 .stats_get = virtio_dev_stats_get, 916 .xstats_get = virtio_dev_xstats_get, 917 .xstats_get_names = virtio_dev_xstats_get_names, 918 .stats_reset = virtio_dev_stats_reset, 919 .xstats_reset = virtio_dev_stats_reset, 920 .link_update = virtio_dev_link_update, 921 .vlan_offload_set = virtio_dev_vlan_offload_set, 922 .rx_queue_setup = virtio_dev_rx_queue_setup, 923 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 924 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 925 .rx_queue_release = virtio_dev_queue_release, 926 .rx_descriptor_done = virtio_dev_rx_queue_done, 927 .tx_queue_setup = virtio_dev_tx_queue_setup, 928 .tx_queue_release = virtio_dev_queue_release, 929 /* collect stats per queue */ 930 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 931 .vlan_filter_set = virtio_vlan_filter_set, 932 .mac_addr_add = virtio_mac_addr_add, 933 .mac_addr_remove = virtio_mac_addr_remove, 934 .mac_addr_set = virtio_mac_addr_set, 935 }; 936 937 /* 938 * dev_ops for virtio-user in secondary processes, as we just have 939 * some limited supports currently. 940 */ 941 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = { 942 .dev_infos_get = virtio_dev_info_get, 943 .stats_get = virtio_dev_stats_get, 944 .xstats_get = virtio_dev_xstats_get, 945 .xstats_get_names = virtio_dev_xstats_get_names, 946 .stats_reset = virtio_dev_stats_reset, 947 .xstats_reset = virtio_dev_stats_reset, 948 /* collect stats per queue */ 949 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set, 950 }; 951 952 static void 953 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 954 { 955 unsigned i; 956 957 for (i = 0; i < dev->data->nb_tx_queues; i++) { 958 const struct virtnet_tx *txvq = dev->data->tx_queues[i]; 959 if (txvq == NULL) 960 continue; 961 962 stats->opackets += txvq->stats.packets; 963 stats->obytes += txvq->stats.bytes; 964 965 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 966 stats->q_opackets[i] = txvq->stats.packets; 967 stats->q_obytes[i] = txvq->stats.bytes; 968 } 969 } 970 971 for (i = 0; i < dev->data->nb_rx_queues; i++) { 972 const struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 973 if (rxvq == NULL) 974 continue; 975 976 stats->ipackets += rxvq->stats.packets; 977 stats->ibytes += rxvq->stats.bytes; 978 stats->ierrors += rxvq->stats.errors; 979 980 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) { 981 stats->q_ipackets[i] = rxvq->stats.packets; 982 stats->q_ibytes[i] = rxvq->stats.bytes; 983 } 984 } 985 986 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed; 987 } 988 989 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev, 990 struct rte_eth_xstat_name *xstats_names, 991 __rte_unused unsigned limit) 992 { 993 unsigned i; 994 unsigned count = 0; 995 unsigned t; 996 997 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 998 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 999 1000 if (xstats_names != NULL) { 1001 /* Note: limit checked in rte_eth_xstats_names() */ 1002 1003 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1004 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1005 if (rxvq == NULL) 1006 continue; 1007 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1008 snprintf(xstats_names[count].name, 1009 sizeof(xstats_names[count].name), 1010 "rx_q%u_%s", i, 1011 rte_virtio_rxq_stat_strings[t].name); 1012 count++; 1013 } 1014 } 1015 1016 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1017 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1018 if (txvq == NULL) 1019 continue; 1020 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1021 snprintf(xstats_names[count].name, 1022 sizeof(xstats_names[count].name), 1023 "tx_q%u_%s", i, 1024 rte_virtio_txq_stat_strings[t].name); 1025 count++; 1026 } 1027 } 1028 return count; 1029 } 1030 return nstats; 1031 } 1032 1033 static int 1034 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, 1035 unsigned n) 1036 { 1037 unsigned i; 1038 unsigned count = 0; 1039 1040 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS + 1041 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS; 1042 1043 if (n < nstats) 1044 return nstats; 1045 1046 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1047 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1048 1049 if (rxvq == NULL) 1050 continue; 1051 1052 unsigned t; 1053 1054 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) { 1055 xstats[count].value = *(uint64_t *)(((char *)rxvq) + 1056 rte_virtio_rxq_stat_strings[t].offset); 1057 xstats[count].id = count; 1058 count++; 1059 } 1060 } 1061 1062 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1063 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1064 1065 if (txvq == NULL) 1066 continue; 1067 1068 unsigned t; 1069 1070 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) { 1071 xstats[count].value = *(uint64_t *)(((char *)txvq) + 1072 rte_virtio_txq_stat_strings[t].offset); 1073 xstats[count].id = count; 1074 count++; 1075 } 1076 } 1077 1078 return count; 1079 } 1080 1081 static int 1082 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) 1083 { 1084 virtio_update_stats(dev, stats); 1085 1086 return 0; 1087 } 1088 1089 static int 1090 virtio_dev_stats_reset(struct rte_eth_dev *dev) 1091 { 1092 unsigned int i; 1093 1094 for (i = 0; i < dev->data->nb_tx_queues; i++) { 1095 struct virtnet_tx *txvq = dev->data->tx_queues[i]; 1096 if (txvq == NULL) 1097 continue; 1098 1099 txvq->stats.packets = 0; 1100 txvq->stats.bytes = 0; 1101 txvq->stats.multicast = 0; 1102 txvq->stats.broadcast = 0; 1103 memset(txvq->stats.size_bins, 0, 1104 sizeof(txvq->stats.size_bins[0]) * 8); 1105 } 1106 1107 for (i = 0; i < dev->data->nb_rx_queues; i++) { 1108 struct virtnet_rx *rxvq = dev->data->rx_queues[i]; 1109 if (rxvq == NULL) 1110 continue; 1111 1112 rxvq->stats.packets = 0; 1113 rxvq->stats.bytes = 0; 1114 rxvq->stats.errors = 0; 1115 rxvq->stats.multicast = 0; 1116 rxvq->stats.broadcast = 0; 1117 memset(rxvq->stats.size_bins, 0, 1118 sizeof(rxvq->stats.size_bins[0]) * 8); 1119 } 1120 1121 return 0; 1122 } 1123 1124 static void 1125 virtio_set_hwaddr(struct virtio_hw *hw) 1126 { 1127 vtpci_write_dev_config(hw, 1128 offsetof(struct virtio_net_config, mac), 1129 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1130 } 1131 1132 static void 1133 virtio_get_hwaddr(struct virtio_hw *hw) 1134 { 1135 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) { 1136 vtpci_read_dev_config(hw, 1137 offsetof(struct virtio_net_config, mac), 1138 &hw->mac_addr, RTE_ETHER_ADDR_LEN); 1139 } else { 1140 rte_eth_random_addr(&hw->mac_addr[0]); 1141 virtio_set_hwaddr(hw); 1142 } 1143 } 1144 1145 static int 1146 virtio_mac_table_set(struct virtio_hw *hw, 1147 const struct virtio_net_ctrl_mac *uc, 1148 const struct virtio_net_ctrl_mac *mc) 1149 { 1150 struct virtio_pmd_ctrl ctrl; 1151 int err, len[2]; 1152 1153 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1154 PMD_DRV_LOG(INFO, "host does not support mac table"); 1155 return -1; 1156 } 1157 1158 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1159 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET; 1160 1161 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries); 1162 memcpy(ctrl.data, uc, len[0]); 1163 1164 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries); 1165 memcpy(ctrl.data + len[0], mc, len[1]); 1166 1167 err = virtio_send_command(hw->cvq, &ctrl, len, 2); 1168 if (err != 0) 1169 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err); 1170 return err; 1171 } 1172 1173 static int 1174 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr, 1175 uint32_t index, uint32_t vmdq __rte_unused) 1176 { 1177 struct virtio_hw *hw = dev->data->dev_private; 1178 const struct rte_ether_addr *addrs = dev->data->mac_addrs; 1179 unsigned int i; 1180 struct virtio_net_ctrl_mac *uc, *mc; 1181 1182 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1183 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1184 return -EINVAL; 1185 } 1186 1187 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1188 sizeof(uc->entries)); 1189 uc->entries = 0; 1190 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1191 sizeof(mc->entries)); 1192 mc->entries = 0; 1193 1194 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1195 const struct rte_ether_addr *addr 1196 = (i == index) ? mac_addr : addrs + i; 1197 struct virtio_net_ctrl_mac *tbl 1198 = rte_is_multicast_ether_addr(addr) ? mc : uc; 1199 1200 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN); 1201 } 1202 1203 return virtio_mac_table_set(hw, uc, mc); 1204 } 1205 1206 static void 1207 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 1208 { 1209 struct virtio_hw *hw = dev->data->dev_private; 1210 struct rte_ether_addr *addrs = dev->data->mac_addrs; 1211 struct virtio_net_ctrl_mac *uc, *mc; 1212 unsigned int i; 1213 1214 if (index >= VIRTIO_MAX_MAC_ADDRS) { 1215 PMD_DRV_LOG(ERR, "mac address index %u out of range", index); 1216 return; 1217 } 1218 1219 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1220 sizeof(uc->entries)); 1221 uc->entries = 0; 1222 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN + 1223 sizeof(mc->entries)); 1224 mc->entries = 0; 1225 1226 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) { 1227 struct virtio_net_ctrl_mac *tbl; 1228 1229 if (i == index || rte_is_zero_ether_addr(addrs + i)) 1230 continue; 1231 1232 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc; 1233 memcpy(&tbl->macs[tbl->entries++], addrs + i, 1234 RTE_ETHER_ADDR_LEN); 1235 } 1236 1237 virtio_mac_table_set(hw, uc, mc); 1238 } 1239 1240 static int 1241 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr) 1242 { 1243 struct virtio_hw *hw = dev->data->dev_private; 1244 1245 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN); 1246 1247 /* Use atomic update if available */ 1248 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) { 1249 struct virtio_pmd_ctrl ctrl; 1250 int len = RTE_ETHER_ADDR_LEN; 1251 1252 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC; 1253 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET; 1254 1255 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN); 1256 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1257 } 1258 1259 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) 1260 return -ENOTSUP; 1261 1262 virtio_set_hwaddr(hw); 1263 return 0; 1264 } 1265 1266 static int 1267 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) 1268 { 1269 struct virtio_hw *hw = dev->data->dev_private; 1270 struct virtio_pmd_ctrl ctrl; 1271 int len; 1272 1273 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) 1274 return -ENOTSUP; 1275 1276 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN; 1277 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL; 1278 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id)); 1279 len = sizeof(vlan_id); 1280 1281 return virtio_send_command(hw->cvq, &ctrl, &len, 1); 1282 } 1283 1284 static int 1285 virtio_intr_unmask(struct rte_eth_dev *dev) 1286 { 1287 struct virtio_hw *hw = dev->data->dev_private; 1288 1289 if (rte_intr_ack(dev->intr_handle) < 0) 1290 return -1; 1291 1292 if (!hw->virtio_user_dev) 1293 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1294 1295 return 0; 1296 } 1297 1298 static int 1299 virtio_intr_enable(struct rte_eth_dev *dev) 1300 { 1301 struct virtio_hw *hw = dev->data->dev_private; 1302 1303 if (rte_intr_enable(dev->intr_handle) < 0) 1304 return -1; 1305 1306 if (!hw->virtio_user_dev) 1307 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1308 1309 return 0; 1310 } 1311 1312 static int 1313 virtio_intr_disable(struct rte_eth_dev *dev) 1314 { 1315 struct virtio_hw *hw = dev->data->dev_private; 1316 1317 if (rte_intr_disable(dev->intr_handle) < 0) 1318 return -1; 1319 1320 if (!hw->virtio_user_dev) 1321 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev)); 1322 1323 return 0; 1324 } 1325 1326 static int 1327 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features) 1328 { 1329 uint64_t host_features; 1330 1331 /* Prepare guest_features: feature that driver wants to support */ 1332 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64, 1333 req_features); 1334 1335 /* Read device(host) feature bits */ 1336 host_features = VTPCI_OPS(hw)->get_features(hw); 1337 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64, 1338 host_features); 1339 1340 /* If supported, ensure MTU value is valid before acknowledging it. */ 1341 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) { 1342 struct virtio_net_config config; 1343 1344 vtpci_read_dev_config(hw, 1345 offsetof(struct virtio_net_config, mtu), 1346 &config.mtu, sizeof(config.mtu)); 1347 1348 if (config.mtu < RTE_ETHER_MIN_MTU) 1349 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 1350 } 1351 1352 /* 1353 * Negotiate features: Subset of device feature bits are written back 1354 * guest feature bits. 1355 */ 1356 hw->guest_features = req_features; 1357 hw->guest_features = vtpci_negotiate_features(hw, host_features); 1358 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64, 1359 hw->guest_features); 1360 1361 if (hw->modern) { 1362 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1363 PMD_INIT_LOG(ERR, 1364 "VIRTIO_F_VERSION_1 features is not enabled."); 1365 return -1; 1366 } 1367 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1368 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1369 PMD_INIT_LOG(ERR, 1370 "failed to set FEATURES_OK status!"); 1371 return -1; 1372 } 1373 } 1374 1375 hw->req_guest_features = req_features; 1376 1377 return 0; 1378 } 1379 1380 int 1381 virtio_dev_pause(struct rte_eth_dev *dev) 1382 { 1383 struct virtio_hw *hw = dev->data->dev_private; 1384 1385 rte_spinlock_lock(&hw->state_lock); 1386 1387 if (hw->started == 0) { 1388 /* Device is just stopped. */ 1389 rte_spinlock_unlock(&hw->state_lock); 1390 return -1; 1391 } 1392 hw->started = 0; 1393 /* 1394 * Prevent the worker threads from touching queues to avoid contention, 1395 * 1 ms should be enough for the ongoing Tx function to finish. 1396 */ 1397 rte_delay_ms(1); 1398 return 0; 1399 } 1400 1401 /* 1402 * Recover hw state to let the worker threads continue. 1403 */ 1404 void 1405 virtio_dev_resume(struct rte_eth_dev *dev) 1406 { 1407 struct virtio_hw *hw = dev->data->dev_private; 1408 1409 hw->started = 1; 1410 rte_spinlock_unlock(&hw->state_lock); 1411 } 1412 1413 /* 1414 * Should be called only after device is paused. 1415 */ 1416 int 1417 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1418 int nb_pkts) 1419 { 1420 struct virtio_hw *hw = dev->data->dev_private; 1421 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1422 int ret; 1423 1424 hw->inject_pkts = tx_pkts; 1425 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1426 hw->inject_pkts = NULL; 1427 1428 return ret; 1429 } 1430 1431 static void 1432 virtio_notify_peers(struct rte_eth_dev *dev) 1433 { 1434 struct virtio_hw *hw = dev->data->dev_private; 1435 struct virtnet_rx *rxvq; 1436 struct rte_mbuf *rarp_mbuf; 1437 1438 if (!dev->data->rx_queues) 1439 return; 1440 1441 rxvq = dev->data->rx_queues[0]; 1442 if (!rxvq) 1443 return; 1444 1445 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1446 (struct rte_ether_addr *)hw->mac_addr); 1447 if (rarp_mbuf == NULL) { 1448 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1449 return; 1450 } 1451 1452 /* If virtio port just stopped, no need to send RARP */ 1453 if (virtio_dev_pause(dev) < 0) { 1454 rte_pktmbuf_free(rarp_mbuf); 1455 return; 1456 } 1457 1458 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1459 virtio_dev_resume(dev); 1460 } 1461 1462 static void 1463 virtio_ack_link_announce(struct rte_eth_dev *dev) 1464 { 1465 struct virtio_hw *hw = dev->data->dev_private; 1466 struct virtio_pmd_ctrl ctrl; 1467 1468 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1469 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1470 1471 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1472 } 1473 1474 /* 1475 * Process virtio config changed interrupt. Call the callback 1476 * if link state changed, generate gratuitous RARP packet if 1477 * the status indicates an ANNOUNCE. 1478 */ 1479 void 1480 virtio_interrupt_handler(void *param) 1481 { 1482 struct rte_eth_dev *dev = param; 1483 struct virtio_hw *hw = dev->data->dev_private; 1484 uint8_t isr; 1485 uint16_t status; 1486 1487 /* Read interrupt status which clears interrupt */ 1488 isr = vtpci_isr(hw); 1489 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1490 1491 if (virtio_intr_unmask(dev) < 0) 1492 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1493 1494 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1495 if (virtio_dev_link_update(dev, 0) == 0) 1496 _rte_eth_dev_callback_process(dev, 1497 RTE_ETH_EVENT_INTR_LSC, 1498 NULL); 1499 1500 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1501 vtpci_read_dev_config(hw, 1502 offsetof(struct virtio_net_config, status), 1503 &status, sizeof(status)); 1504 if (status & VIRTIO_NET_S_ANNOUNCE) { 1505 virtio_notify_peers(dev); 1506 if (hw->cvq) 1507 virtio_ack_link_announce(dev); 1508 } 1509 } 1510 } 1511 } 1512 1513 /* set rx and tx handlers according to what is supported */ 1514 static void 1515 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1516 { 1517 struct virtio_hw *hw = eth_dev->data->dev_private; 1518 1519 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1520 if (vtpci_packed_queue(hw)) { 1521 PMD_INIT_LOG(INFO, 1522 "virtio: using packed ring %s Tx path on port %u", 1523 hw->use_vec_tx ? "vectorized" : "standard", 1524 eth_dev->data->port_id); 1525 if (hw->use_vec_tx) 1526 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1527 else 1528 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1529 } else { 1530 if (hw->use_inorder_tx) { 1531 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1532 eth_dev->data->port_id); 1533 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1534 } else { 1535 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1536 eth_dev->data->port_id); 1537 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1538 } 1539 } 1540 1541 if (vtpci_packed_queue(hw)) { 1542 if (hw->use_vec_rx) { 1543 PMD_INIT_LOG(INFO, 1544 "virtio: using packed ring vectorized Rx path on port %u", 1545 eth_dev->data->port_id); 1546 eth_dev->rx_pkt_burst = 1547 &virtio_recv_pkts_packed_vec; 1548 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1549 PMD_INIT_LOG(INFO, 1550 "virtio: using packed ring mergeable buffer Rx path on port %u", 1551 eth_dev->data->port_id); 1552 eth_dev->rx_pkt_burst = 1553 &virtio_recv_mergeable_pkts_packed; 1554 } else { 1555 PMD_INIT_LOG(INFO, 1556 "virtio: using packed ring standard Rx path on port %u", 1557 eth_dev->data->port_id); 1558 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1559 } 1560 } else { 1561 if (hw->use_vec_rx) { 1562 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1563 eth_dev->data->port_id); 1564 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1565 } else if (hw->use_inorder_rx) { 1566 PMD_INIT_LOG(INFO, 1567 "virtio: using inorder Rx path on port %u", 1568 eth_dev->data->port_id); 1569 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1570 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1571 PMD_INIT_LOG(INFO, 1572 "virtio: using mergeable buffer Rx path on port %u", 1573 eth_dev->data->port_id); 1574 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1575 } else { 1576 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1577 eth_dev->data->port_id); 1578 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1579 } 1580 } 1581 1582 } 1583 1584 /* Only support 1:1 queue/interrupt mapping so far. 1585 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1586 * interrupt vectors (<N+1). 1587 */ 1588 static int 1589 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1590 { 1591 uint32_t i; 1592 struct virtio_hw *hw = dev->data->dev_private; 1593 1594 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1595 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1596 dev->intr_handle->intr_vec[i] = i + 1; 1597 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1598 VIRTIO_MSI_NO_VECTOR) { 1599 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1600 return -EBUSY; 1601 } 1602 } 1603 1604 return 0; 1605 } 1606 1607 static void 1608 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1609 { 1610 uint32_t i; 1611 struct virtio_hw *hw = dev->data->dev_private; 1612 1613 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1614 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1615 VTPCI_OPS(hw)->set_queue_irq(hw, 1616 hw->vqs[i * VTNET_CQ], 1617 VIRTIO_MSI_NO_VECTOR); 1618 } 1619 1620 static int 1621 virtio_configure_intr(struct rte_eth_dev *dev) 1622 { 1623 struct virtio_hw *hw = dev->data->dev_private; 1624 1625 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1626 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1627 return -ENOTSUP; 1628 } 1629 1630 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1631 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1632 return -1; 1633 } 1634 1635 if (!dev->intr_handle->intr_vec) { 1636 dev->intr_handle->intr_vec = 1637 rte_zmalloc("intr_vec", 1638 hw->max_queue_pairs * sizeof(int), 0); 1639 if (!dev->intr_handle->intr_vec) { 1640 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1641 hw->max_queue_pairs); 1642 return -ENOMEM; 1643 } 1644 } 1645 1646 /* Re-register callback to update max_intr */ 1647 rte_intr_callback_unregister(dev->intr_handle, 1648 virtio_interrupt_handler, 1649 dev); 1650 rte_intr_callback_register(dev->intr_handle, 1651 virtio_interrupt_handler, 1652 dev); 1653 1654 /* DO NOT try to remove this! This function will enable msix, or QEMU 1655 * will encounter SIGSEGV when DRIVER_OK is sent. 1656 * And for legacy devices, this should be done before queue/vec binding 1657 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1658 * (22) will be ignored. 1659 */ 1660 if (virtio_intr_enable(dev) < 0) { 1661 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1662 return -1; 1663 } 1664 1665 if (virtio_queues_bind_intr(dev) < 0) { 1666 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1667 return -1; 1668 } 1669 1670 return 0; 1671 } 1672 #define SPEED_UNKNOWN 0xffffffff 1673 #define DUPLEX_UNKNOWN 0xff 1674 /* reset device and renegotiate features if needed */ 1675 static int 1676 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1677 { 1678 struct virtio_hw *hw = eth_dev->data->dev_private; 1679 struct virtio_net_config *config; 1680 struct virtio_net_config local_config; 1681 struct rte_pci_device *pci_dev = NULL; 1682 int ret; 1683 1684 /* Reset the device although not necessary at startup */ 1685 vtpci_reset(hw); 1686 1687 if (hw->vqs) { 1688 virtio_dev_free_mbufs(eth_dev); 1689 virtio_free_queues(hw); 1690 } 1691 1692 /* Tell the host we've noticed this device. */ 1693 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1694 1695 /* Tell the host we've known how to drive the device. */ 1696 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1697 if (virtio_negotiate_features(hw, req_features) < 0) 1698 return -1; 1699 1700 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1701 1702 if (!hw->virtio_user_dev) 1703 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1704 1705 /* If host does not support both status and MSI-X then disable LSC */ 1706 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1707 hw->use_msix != VIRTIO_MSIX_NONE) 1708 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1709 else 1710 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1711 1712 /* Setting up rx_header size for the device */ 1713 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1714 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1715 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1716 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1717 else 1718 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1719 1720 /* Copy the permanent MAC address to: virtio_hw */ 1721 virtio_get_hwaddr(hw); 1722 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1723 ð_dev->data->mac_addrs[0]); 1724 PMD_INIT_LOG(DEBUG, 1725 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1726 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1727 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1728 1729 if (hw->speed == SPEED_UNKNOWN) { 1730 if (vtpci_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) { 1731 config = &local_config; 1732 vtpci_read_dev_config(hw, 1733 offsetof(struct virtio_net_config, speed), 1734 &config->speed, sizeof(config->speed)); 1735 vtpci_read_dev_config(hw, 1736 offsetof(struct virtio_net_config, duplex), 1737 &config->duplex, sizeof(config->duplex)); 1738 hw->speed = config->speed; 1739 hw->duplex = config->duplex; 1740 } 1741 } 1742 if (hw->speed == SPEED_UNKNOWN) 1743 hw->speed = ETH_SPEED_NUM_10G; 1744 if (hw->duplex == DUPLEX_UNKNOWN) 1745 hw->duplex = ETH_LINK_FULL_DUPLEX; 1746 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1747 hw->speed, hw->duplex); 1748 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1749 config = &local_config; 1750 1751 vtpci_read_dev_config(hw, 1752 offsetof(struct virtio_net_config, mac), 1753 &config->mac, sizeof(config->mac)); 1754 1755 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1756 vtpci_read_dev_config(hw, 1757 offsetof(struct virtio_net_config, status), 1758 &config->status, sizeof(config->status)); 1759 } else { 1760 PMD_INIT_LOG(DEBUG, 1761 "VIRTIO_NET_F_STATUS is not supported"); 1762 config->status = 0; 1763 } 1764 1765 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1766 vtpci_read_dev_config(hw, 1767 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1768 &config->max_virtqueue_pairs, 1769 sizeof(config->max_virtqueue_pairs)); 1770 } else { 1771 PMD_INIT_LOG(DEBUG, 1772 "VIRTIO_NET_F_MQ is not supported"); 1773 config->max_virtqueue_pairs = 1; 1774 } 1775 1776 hw->max_queue_pairs = config->max_virtqueue_pairs; 1777 1778 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1779 vtpci_read_dev_config(hw, 1780 offsetof(struct virtio_net_config, mtu), 1781 &config->mtu, 1782 sizeof(config->mtu)); 1783 1784 /* 1785 * MTU value has already been checked at negotiation 1786 * time, but check again in case it has changed since 1787 * then, which should not happen. 1788 */ 1789 if (config->mtu < RTE_ETHER_MIN_MTU) { 1790 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1791 config->mtu); 1792 return -1; 1793 } 1794 1795 hw->max_mtu = config->mtu; 1796 /* Set initial MTU to maximum one supported by vhost */ 1797 eth_dev->data->mtu = config->mtu; 1798 1799 } else { 1800 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1801 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1802 } 1803 1804 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1805 config->max_virtqueue_pairs); 1806 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1807 PMD_INIT_LOG(DEBUG, 1808 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1809 config->mac[0], config->mac[1], 1810 config->mac[2], config->mac[3], 1811 config->mac[4], config->mac[5]); 1812 } else { 1813 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1814 hw->max_queue_pairs = 1; 1815 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1816 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1817 } 1818 1819 ret = virtio_alloc_queues(eth_dev); 1820 if (ret < 0) 1821 return ret; 1822 1823 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1824 if (virtio_configure_intr(eth_dev) < 0) { 1825 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1826 virtio_free_queues(hw); 1827 return -1; 1828 } 1829 } 1830 1831 vtpci_reinit_complete(hw); 1832 1833 if (pci_dev) 1834 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1835 eth_dev->data->port_id, pci_dev->id.vendor_id, 1836 pci_dev->id.device_id); 1837 1838 return 0; 1839 } 1840 1841 /* 1842 * Remap the PCI device again (IO port map for legacy device and 1843 * memory map for modern device), so that the secondary process 1844 * could have the PCI initiated correctly. 1845 */ 1846 static int 1847 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1848 { 1849 if (hw->modern) { 1850 /* 1851 * We don't have to re-parse the PCI config space, since 1852 * rte_pci_map_device() makes sure the mapped address 1853 * in secondary process would equal to the one mapped in 1854 * the primary process: error will be returned if that 1855 * requirement is not met. 1856 * 1857 * That said, we could simply reuse all cap pointers 1858 * (such as dev_cfg, common_cfg, etc.) parsed from the 1859 * primary process, which is stored in shared memory. 1860 */ 1861 if (rte_pci_map_device(pci_dev)) { 1862 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1863 return -1; 1864 } 1865 } else { 1866 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1867 return -1; 1868 } 1869 1870 return 0; 1871 } 1872 1873 static void 1874 virtio_set_vtpci_ops(struct virtio_hw *hw) 1875 { 1876 #ifdef RTE_VIRTIO_USER 1877 if (hw->virtio_user_dev) 1878 VTPCI_OPS(hw) = &virtio_user_ops; 1879 else 1880 #endif 1881 if (hw->modern) 1882 VTPCI_OPS(hw) = &modern_ops; 1883 else 1884 VTPCI_OPS(hw) = &legacy_ops; 1885 } 1886 1887 /* 1888 * This function is based on probe() function in virtio_pci.c 1889 * It returns 0 on success. 1890 */ 1891 int 1892 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1893 { 1894 struct virtio_hw *hw = eth_dev->data->dev_private; 1895 uint32_t speed = SPEED_UNKNOWN; 1896 int vectorized = 0; 1897 int ret; 1898 1899 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1900 PMD_INIT_LOG(ERR, 1901 "Not sufficient headroom required = %d, avail = %d", 1902 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1903 RTE_PKTMBUF_HEADROOM); 1904 1905 return -1; 1906 } 1907 1908 eth_dev->dev_ops = &virtio_eth_dev_ops; 1909 1910 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1911 if (!hw->virtio_user_dev) { 1912 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1913 if (ret) 1914 return ret; 1915 } 1916 1917 virtio_set_vtpci_ops(hw); 1918 set_rxtx_funcs(eth_dev); 1919 1920 return 0; 1921 } 1922 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, 1923 NULL, &speed, &vectorized); 1924 if (ret < 0) 1925 return ret; 1926 hw->speed = speed; 1927 /* 1928 * Pass the information to the rte_eth_dev_close() that it should also 1929 * release the private port resources. 1930 */ 1931 eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE; 1932 1933 /* Allocate memory for storing MAC addresses */ 1934 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1935 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1936 if (eth_dev->data->mac_addrs == NULL) { 1937 PMD_INIT_LOG(ERR, 1938 "Failed to allocate %d bytes needed to store MAC addresses", 1939 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1940 return -ENOMEM; 1941 } 1942 1943 hw->port_id = eth_dev->data->port_id; 1944 /* For virtio_user case the hw->virtio_user_dev is populated by 1945 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1946 */ 1947 if (!hw->virtio_user_dev) { 1948 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1949 if (ret) 1950 goto err_vtpci_init; 1951 } 1952 1953 rte_spinlock_init(&hw->state_lock); 1954 1955 /* reset device and negotiate default features */ 1956 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1957 if (ret < 0) 1958 goto err_virtio_init; 1959 1960 if (vectorized) { 1961 if (!vtpci_packed_queue(hw)) { 1962 hw->use_vec_rx = 1; 1963 } else { 1964 #if !defined(CC_AVX512_SUPPORT) 1965 PMD_DRV_LOG(INFO, 1966 "building environment do not support packed ring vectorized"); 1967 #else 1968 hw->use_vec_rx = 1; 1969 hw->use_vec_tx = 1; 1970 #endif 1971 } 1972 } 1973 1974 hw->opened = true; 1975 1976 return 0; 1977 1978 err_virtio_init: 1979 if (!hw->virtio_user_dev) { 1980 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1981 if (!hw->modern) 1982 rte_pci_ioport_unmap(VTPCI_IO(hw)); 1983 } 1984 err_vtpci_init: 1985 rte_free(eth_dev->data->mac_addrs); 1986 eth_dev->data->mac_addrs = NULL; 1987 return ret; 1988 } 1989 1990 static int 1991 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1992 { 1993 PMD_INIT_FUNC_TRACE(); 1994 1995 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1996 return 0; 1997 1998 virtio_dev_stop(eth_dev); 1999 virtio_dev_close(eth_dev); 2000 2001 eth_dev->dev_ops = NULL; 2002 eth_dev->tx_pkt_burst = NULL; 2003 eth_dev->rx_pkt_burst = NULL; 2004 2005 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 2006 2007 return 0; 2008 } 2009 2010 2011 static int vdpa_check_handler(__rte_unused const char *key, 2012 const char *value, void *ret_val) 2013 { 2014 if (strcmp(value, "1") == 0) 2015 *(int *)ret_val = 1; 2016 else 2017 *(int *)ret_val = 0; 2018 2019 return 0; 2020 } 2021 2022 2023 static uint32_t 2024 virtio_dev_speed_capa_get(uint32_t speed) 2025 { 2026 switch (speed) { 2027 case ETH_SPEED_NUM_10G: 2028 return ETH_LINK_SPEED_10G; 2029 case ETH_SPEED_NUM_20G: 2030 return ETH_LINK_SPEED_20G; 2031 case ETH_SPEED_NUM_25G: 2032 return ETH_LINK_SPEED_25G; 2033 case ETH_SPEED_NUM_40G: 2034 return ETH_LINK_SPEED_40G; 2035 case ETH_SPEED_NUM_50G: 2036 return ETH_LINK_SPEED_50G; 2037 case ETH_SPEED_NUM_56G: 2038 return ETH_LINK_SPEED_56G; 2039 case ETH_SPEED_NUM_100G: 2040 return ETH_LINK_SPEED_100G; 2041 default: 2042 return 0; 2043 } 2044 } 2045 2046 static int vectorized_check_handler(__rte_unused const char *key, 2047 const char *value, void *ret_val) 2048 { 2049 if (strcmp(value, "1") == 0) 2050 *(int *)ret_val = 1; 2051 else 2052 *(int *)ret_val = 0; 2053 2054 return 0; 2055 } 2056 2057 #define VIRTIO_ARG_SPEED "speed" 2058 #define VIRTIO_ARG_VDPA "vdpa" 2059 #define VIRTIO_ARG_VECTORIZED "vectorized" 2060 2061 2062 static int 2063 link_speed_handler(const char *key __rte_unused, 2064 const char *value, void *ret_val) 2065 { 2066 uint32_t val; 2067 if (!value || !ret_val) 2068 return -EINVAL; 2069 val = strtoul(value, NULL, 0); 2070 /* validate input */ 2071 if (virtio_dev_speed_capa_get(val) == 0) 2072 return -EINVAL; 2073 *(uint32_t *)ret_val = val; 2074 2075 return 0; 2076 } 2077 2078 2079 static int 2080 virtio_dev_devargs_parse(struct rte_devargs *devargs, int *vdpa, 2081 uint32_t *speed, int *vectorized) 2082 { 2083 struct rte_kvargs *kvlist; 2084 int ret = 0; 2085 2086 if (devargs == NULL) 2087 return 0; 2088 2089 kvlist = rte_kvargs_parse(devargs->args, NULL); 2090 if (kvlist == NULL) { 2091 PMD_INIT_LOG(ERR, "error when parsing param"); 2092 return 0; 2093 } 2094 if (vdpa && rte_kvargs_count(kvlist, VIRTIO_ARG_VDPA) == 1) { 2095 /* vdpa mode selected when there's a key-value pair: 2096 * vdpa=1 2097 */ 2098 ret = rte_kvargs_process(kvlist, VIRTIO_ARG_VDPA, 2099 vdpa_check_handler, vdpa); 2100 if (ret < 0) { 2101 PMD_INIT_LOG(ERR, "Failed to parse %s", 2102 VIRTIO_ARG_VDPA); 2103 goto exit; 2104 } 2105 } 2106 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2107 ret = rte_kvargs_process(kvlist, 2108 VIRTIO_ARG_SPEED, 2109 link_speed_handler, speed); 2110 if (ret < 0) { 2111 PMD_INIT_LOG(ERR, "Failed to parse %s", 2112 VIRTIO_ARG_SPEED); 2113 goto exit; 2114 } 2115 } 2116 2117 if (vectorized && 2118 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2119 ret = rte_kvargs_process(kvlist, 2120 VIRTIO_ARG_VECTORIZED, 2121 vectorized_check_handler, vectorized); 2122 if (ret < 0) { 2123 PMD_INIT_LOG(ERR, "Failed to parse %s", 2124 VIRTIO_ARG_VECTORIZED); 2125 goto exit; 2126 } 2127 } 2128 2129 exit: 2130 rte_kvargs_free(kvlist); 2131 return ret; 2132 } 2133 2134 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 2135 struct rte_pci_device *pci_dev) 2136 { 2137 int vdpa = 0; 2138 int ret = 0; 2139 2140 ret = virtio_dev_devargs_parse(pci_dev->device.devargs, &vdpa, NULL, 2141 NULL); 2142 if (ret < 0) { 2143 PMD_INIT_LOG(ERR, "devargs parsing is failed"); 2144 return ret; 2145 } 2146 /* virtio pmd skips probe if device needs to work in vdpa mode */ 2147 if (vdpa == 1) 2148 return 1; 2149 2150 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 2151 eth_virtio_dev_init); 2152 } 2153 2154 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 2155 { 2156 int ret; 2157 2158 ret = rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 2159 /* Port has already been released by close. */ 2160 if (ret == -ENODEV) 2161 ret = 0; 2162 return ret; 2163 } 2164 2165 static struct rte_pci_driver rte_virtio_pmd = { 2166 .driver = { 2167 .name = "net_virtio", 2168 }, 2169 .id_table = pci_id_virtio_map, 2170 .drv_flags = 0, 2171 .probe = eth_virtio_pci_probe, 2172 .remove = eth_virtio_pci_remove, 2173 }; 2174 2175 RTE_INIT(rte_virtio_pmd_init) 2176 { 2177 rte_eal_iopl_init(); 2178 rte_pci_register(&rte_virtio_pmd); 2179 } 2180 2181 static bool 2182 rx_offload_enabled(struct virtio_hw *hw) 2183 { 2184 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2185 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2186 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2187 } 2188 2189 static bool 2190 tx_offload_enabled(struct virtio_hw *hw) 2191 { 2192 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 2193 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2194 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2195 } 2196 2197 /* 2198 * Configure virtio device 2199 * It returns 0 on success. 2200 */ 2201 static int 2202 virtio_dev_configure(struct rte_eth_dev *dev) 2203 { 2204 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2205 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2206 struct virtio_hw *hw = dev->data->dev_private; 2207 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2208 hw->vtnet_hdr_size; 2209 uint64_t rx_offloads = rxmode->offloads; 2210 uint64_t tx_offloads = txmode->offloads; 2211 uint64_t req_features; 2212 int ret; 2213 2214 PMD_INIT_LOG(DEBUG, "configure"); 2215 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2216 2217 if (rxmode->mq_mode != ETH_MQ_RX_NONE) { 2218 PMD_DRV_LOG(ERR, 2219 "Unsupported Rx multi queue mode %d", 2220 rxmode->mq_mode); 2221 return -EINVAL; 2222 } 2223 2224 if (txmode->mq_mode != ETH_MQ_TX_NONE) { 2225 PMD_DRV_LOG(ERR, 2226 "Unsupported Tx multi queue mode %d", 2227 txmode->mq_mode); 2228 return -EINVAL; 2229 } 2230 2231 if (dev->data->dev_conf.intr_conf.rxq) { 2232 ret = virtio_init_device(dev, hw->req_guest_features); 2233 if (ret < 0) 2234 return ret; 2235 } 2236 2237 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2238 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2239 2240 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2241 DEV_RX_OFFLOAD_TCP_CKSUM)) 2242 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2243 2244 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2245 req_features |= 2246 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2247 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2248 2249 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2250 DEV_TX_OFFLOAD_TCP_CKSUM)) 2251 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2252 2253 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2254 req_features |= 2255 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2256 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2257 2258 /* if request features changed, reinit the device */ 2259 if (req_features != hw->req_guest_features) { 2260 ret = virtio_init_device(dev, req_features); 2261 if (ret < 0) 2262 return ret; 2263 } 2264 2265 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2266 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2267 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2268 PMD_DRV_LOG(ERR, 2269 "rx checksum not available on this host"); 2270 return -ENOTSUP; 2271 } 2272 2273 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2274 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2275 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2276 PMD_DRV_LOG(ERR, 2277 "Large Receive Offload not available on this host"); 2278 return -ENOTSUP; 2279 } 2280 2281 /* start control queue */ 2282 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2283 virtio_dev_cq_start(dev); 2284 2285 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2286 hw->vlan_strip = 1; 2287 2288 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2289 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2290 PMD_DRV_LOG(ERR, 2291 "vlan filtering not available on this host"); 2292 return -ENOTSUP; 2293 } 2294 2295 hw->has_tx_offload = tx_offload_enabled(hw); 2296 hw->has_rx_offload = rx_offload_enabled(hw); 2297 2298 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2299 /* Enable vector (0) for Link State Intrerrupt */ 2300 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2301 VIRTIO_MSI_NO_VECTOR) { 2302 PMD_DRV_LOG(ERR, "failed to set config vector"); 2303 return -EBUSY; 2304 } 2305 2306 if (vtpci_packed_queue(hw)) { 2307 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2308 if ((hw->use_vec_rx || hw->use_vec_tx) && 2309 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2310 !vtpci_with_feature(hw, VIRTIO_F_IN_ORDER) || 2311 !vtpci_with_feature(hw, VIRTIO_F_VERSION_1))) { 2312 PMD_DRV_LOG(INFO, 2313 "disabled packed ring vectorized path for requirements not met"); 2314 hw->use_vec_rx = 0; 2315 hw->use_vec_tx = 0; 2316 } 2317 #else 2318 hw->use_vec_rx = 0; 2319 hw->use_vec_tx = 0; 2320 #endif 2321 2322 if (hw->use_vec_rx) { 2323 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2324 PMD_DRV_LOG(INFO, 2325 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2326 hw->use_vec_rx = 0; 2327 } 2328 2329 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) { 2330 PMD_DRV_LOG(INFO, 2331 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2332 hw->use_vec_rx = 0; 2333 } 2334 } 2335 } else { 2336 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2337 hw->use_inorder_tx = 1; 2338 hw->use_inorder_rx = 1; 2339 hw->use_vec_rx = 0; 2340 } 2341 2342 if (hw->use_vec_rx) { 2343 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2344 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2345 PMD_DRV_LOG(INFO, 2346 "disabled split ring vectorized path for requirement not met"); 2347 hw->use_vec_rx = 0; 2348 } 2349 #endif 2350 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2351 PMD_DRV_LOG(INFO, 2352 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2353 hw->use_vec_rx = 0; 2354 } 2355 2356 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2357 DEV_RX_OFFLOAD_TCP_CKSUM | 2358 DEV_RX_OFFLOAD_TCP_LRO | 2359 DEV_RX_OFFLOAD_VLAN_STRIP)) { 2360 PMD_DRV_LOG(INFO, 2361 "disabled split ring vectorized rx for offloading enabled"); 2362 hw->use_vec_rx = 0; 2363 } 2364 } 2365 } 2366 2367 return 0; 2368 } 2369 2370 2371 static int 2372 virtio_dev_start(struct rte_eth_dev *dev) 2373 { 2374 uint16_t nb_queues, i; 2375 struct virtnet_rx *rxvq; 2376 struct virtnet_tx *txvq __rte_unused; 2377 struct virtio_hw *hw = dev->data->dev_private; 2378 int ret; 2379 2380 /* Finish the initialization of the queues */ 2381 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2382 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2383 if (ret < 0) 2384 return ret; 2385 } 2386 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2387 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2388 if (ret < 0) 2389 return ret; 2390 } 2391 2392 /* check if lsc interrupt feature is enabled */ 2393 if (dev->data->dev_conf.intr_conf.lsc) { 2394 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2395 PMD_DRV_LOG(ERR, "link status not supported by host"); 2396 return -ENOTSUP; 2397 } 2398 } 2399 2400 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2401 * in device configure, but it could be unmapped when device is 2402 * stopped. 2403 */ 2404 if (dev->data->dev_conf.intr_conf.lsc || 2405 dev->data->dev_conf.intr_conf.rxq) { 2406 virtio_intr_disable(dev); 2407 2408 /* Setup interrupt callback */ 2409 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2410 rte_intr_callback_register(dev->intr_handle, 2411 virtio_interrupt_handler, 2412 dev); 2413 2414 if (virtio_intr_enable(dev) < 0) { 2415 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2416 return -EIO; 2417 } 2418 } 2419 2420 /*Notify the backend 2421 *Otherwise the tap backend might already stop its queue due to fullness. 2422 *vhost backend will have no chance to be waked up 2423 */ 2424 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2425 if (hw->max_queue_pairs > 1) { 2426 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2427 return -EINVAL; 2428 } 2429 2430 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2431 2432 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2433 rxvq = dev->data->rx_queues[i]; 2434 /* Flush the old packets */ 2435 virtqueue_rxvq_flush(rxvq->vq); 2436 virtqueue_notify(rxvq->vq); 2437 } 2438 2439 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2440 txvq = dev->data->tx_queues[i]; 2441 virtqueue_notify(txvq->vq); 2442 } 2443 2444 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2445 2446 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2447 rxvq = dev->data->rx_queues[i]; 2448 VIRTQUEUE_DUMP(rxvq->vq); 2449 } 2450 2451 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2452 txvq = dev->data->tx_queues[i]; 2453 VIRTQUEUE_DUMP(txvq->vq); 2454 } 2455 2456 set_rxtx_funcs(dev); 2457 hw->started = true; 2458 2459 /* Initialize Link state */ 2460 virtio_dev_link_update(dev, 0); 2461 2462 return 0; 2463 } 2464 2465 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2466 { 2467 struct virtio_hw *hw = dev->data->dev_private; 2468 uint16_t nr_vq = virtio_get_nr_vq(hw); 2469 const char *type __rte_unused; 2470 unsigned int i, mbuf_num = 0; 2471 struct virtqueue *vq; 2472 struct rte_mbuf *buf; 2473 int queue_type; 2474 2475 if (hw->vqs == NULL) 2476 return; 2477 2478 for (i = 0; i < nr_vq; i++) { 2479 vq = hw->vqs[i]; 2480 if (!vq) 2481 continue; 2482 2483 queue_type = virtio_get_queue_type(hw, i); 2484 if (queue_type == VTNET_RQ) 2485 type = "rxq"; 2486 else if (queue_type == VTNET_TQ) 2487 type = "txq"; 2488 else 2489 continue; 2490 2491 PMD_INIT_LOG(DEBUG, 2492 "Before freeing %s[%d] used and unused buf", 2493 type, i); 2494 VIRTQUEUE_DUMP(vq); 2495 2496 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2497 rte_pktmbuf_free(buf); 2498 mbuf_num++; 2499 } 2500 2501 PMD_INIT_LOG(DEBUG, 2502 "After freeing %s[%d] used and unused buf", 2503 type, i); 2504 VIRTQUEUE_DUMP(vq); 2505 } 2506 2507 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2508 } 2509 2510 /* 2511 * Stop device: disable interrupt and mark link down 2512 */ 2513 static void 2514 virtio_dev_stop(struct rte_eth_dev *dev) 2515 { 2516 struct virtio_hw *hw = dev->data->dev_private; 2517 struct rte_eth_link link; 2518 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2519 2520 PMD_INIT_LOG(DEBUG, "stop"); 2521 2522 rte_spinlock_lock(&hw->state_lock); 2523 if (!hw->started) 2524 goto out_unlock; 2525 hw->started = false; 2526 2527 if (intr_conf->lsc || intr_conf->rxq) { 2528 virtio_intr_disable(dev); 2529 2530 /* Reset interrupt callback */ 2531 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2532 rte_intr_callback_unregister(dev->intr_handle, 2533 virtio_interrupt_handler, 2534 dev); 2535 } 2536 } 2537 2538 memset(&link, 0, sizeof(link)); 2539 rte_eth_linkstatus_set(dev, &link); 2540 out_unlock: 2541 rte_spinlock_unlock(&hw->state_lock); 2542 } 2543 2544 static int 2545 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2546 { 2547 struct rte_eth_link link; 2548 uint16_t status; 2549 struct virtio_hw *hw = dev->data->dev_private; 2550 2551 memset(&link, 0, sizeof(link)); 2552 link.link_duplex = hw->duplex; 2553 link.link_speed = hw->speed; 2554 link.link_autoneg = ETH_LINK_AUTONEG; 2555 2556 if (!hw->started) { 2557 link.link_status = ETH_LINK_DOWN; 2558 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2559 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2560 vtpci_read_dev_config(hw, 2561 offsetof(struct virtio_net_config, status), 2562 &status, sizeof(status)); 2563 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2564 link.link_status = ETH_LINK_DOWN; 2565 PMD_INIT_LOG(DEBUG, "Port %d is down", 2566 dev->data->port_id); 2567 } else { 2568 link.link_status = ETH_LINK_UP; 2569 PMD_INIT_LOG(DEBUG, "Port %d is up", 2570 dev->data->port_id); 2571 } 2572 } else { 2573 link.link_status = ETH_LINK_UP; 2574 } 2575 2576 return rte_eth_linkstatus_set(dev, &link); 2577 } 2578 2579 static int 2580 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2581 { 2582 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2583 struct virtio_hw *hw = dev->data->dev_private; 2584 uint64_t offloads = rxmode->offloads; 2585 2586 if (mask & ETH_VLAN_FILTER_MASK) { 2587 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2588 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2589 2590 PMD_DRV_LOG(NOTICE, 2591 "vlan filtering not available on this host"); 2592 2593 return -ENOTSUP; 2594 } 2595 } 2596 2597 if (mask & ETH_VLAN_STRIP_MASK) 2598 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2599 2600 return 0; 2601 } 2602 2603 static int 2604 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2605 { 2606 uint64_t tso_mask, host_features; 2607 struct virtio_hw *hw = dev->data->dev_private; 2608 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2609 2610 dev_info->max_rx_queues = 2611 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2612 dev_info->max_tx_queues = 2613 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2614 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2615 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2616 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2617 2618 host_features = VTPCI_OPS(hw)->get_features(hw); 2619 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2620 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2621 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2622 dev_info->rx_offload_capa |= 2623 DEV_RX_OFFLOAD_TCP_CKSUM | 2624 DEV_RX_OFFLOAD_UDP_CKSUM; 2625 } 2626 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2627 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2628 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2629 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2630 if ((host_features & tso_mask) == tso_mask) 2631 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2632 2633 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2634 DEV_TX_OFFLOAD_VLAN_INSERT; 2635 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2636 dev_info->tx_offload_capa |= 2637 DEV_TX_OFFLOAD_UDP_CKSUM | 2638 DEV_TX_OFFLOAD_TCP_CKSUM; 2639 } 2640 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2641 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2642 if ((host_features & tso_mask) == tso_mask) 2643 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2644 2645 return 0; 2646 } 2647 2648 /* 2649 * It enables testpmd to collect per queue stats. 2650 */ 2651 static int 2652 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2653 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2654 __rte_unused uint8_t is_rx) 2655 { 2656 return 0; 2657 } 2658 2659 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2660 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2661 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2662 2663 RTE_INIT(virtio_init_log) 2664 { 2665 virtio_logtype_init = rte_log_register("pmd.net.virtio.init"); 2666 if (virtio_logtype_init >= 0) 2667 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE); 2668 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver"); 2669 if (virtio_logtype_driver >= 0) 2670 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE); 2671 } 2672