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