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 int 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 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 715 return 0; 716 717 if (!hw->opened) 718 return 0; 719 hw->opened = false; 720 721 /* reset the NIC */ 722 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 723 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR); 724 if (intr_conf->rxq) 725 virtio_queues_unbind_intr(dev); 726 727 if (intr_conf->lsc || intr_conf->rxq) { 728 virtio_intr_disable(dev); 729 rte_intr_efd_disable(dev->intr_handle); 730 rte_free(dev->intr_handle->intr_vec); 731 dev->intr_handle->intr_vec = NULL; 732 } 733 734 vtpci_reset(hw); 735 virtio_dev_free_mbufs(dev); 736 virtio_free_queues(hw); 737 738 #ifdef RTE_VIRTIO_USER 739 if (hw->virtio_user_dev) 740 virtio_user_dev_uninit(hw->virtio_user_dev); 741 else 742 #endif 743 if (dev->device) { 744 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(dev)); 745 if (!hw->modern) 746 rte_pci_ioport_unmap(VTPCI_IO(hw)); 747 } 748 749 return 0; 750 } 751 752 static int 753 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev) 754 { 755 struct virtio_hw *hw = dev->data->dev_private; 756 struct virtio_pmd_ctrl ctrl; 757 int dlen[1]; 758 int ret; 759 760 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 761 PMD_INIT_LOG(INFO, "host does not support rx control"); 762 return -ENOTSUP; 763 } 764 765 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 766 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 767 ctrl.data[0] = 1; 768 dlen[0] = 1; 769 770 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 771 if (ret) { 772 PMD_INIT_LOG(ERR, "Failed to enable promisc"); 773 return -EAGAIN; 774 } 775 776 return 0; 777 } 778 779 static int 780 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev) 781 { 782 struct virtio_hw *hw = dev->data->dev_private; 783 struct virtio_pmd_ctrl ctrl; 784 int dlen[1]; 785 int ret; 786 787 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 788 PMD_INIT_LOG(INFO, "host does not support rx control"); 789 return -ENOTSUP; 790 } 791 792 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 793 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC; 794 ctrl.data[0] = 0; 795 dlen[0] = 1; 796 797 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 798 if (ret) { 799 PMD_INIT_LOG(ERR, "Failed to disable promisc"); 800 return -EAGAIN; 801 } 802 803 return 0; 804 } 805 806 static int 807 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev) 808 { 809 struct virtio_hw *hw = dev->data->dev_private; 810 struct virtio_pmd_ctrl ctrl; 811 int dlen[1]; 812 int ret; 813 814 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 815 PMD_INIT_LOG(INFO, "host does not support rx control"); 816 return -ENOTSUP; 817 } 818 819 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 820 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 821 ctrl.data[0] = 1; 822 dlen[0] = 1; 823 824 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 825 if (ret) { 826 PMD_INIT_LOG(ERR, "Failed to enable allmulticast"); 827 return -EAGAIN; 828 } 829 830 return 0; 831 } 832 833 static int 834 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev) 835 { 836 struct virtio_hw *hw = dev->data->dev_private; 837 struct virtio_pmd_ctrl ctrl; 838 int dlen[1]; 839 int ret; 840 841 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) { 842 PMD_INIT_LOG(INFO, "host does not support rx control"); 843 return -ENOTSUP; 844 } 845 846 ctrl.hdr.class = VIRTIO_NET_CTRL_RX; 847 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI; 848 ctrl.data[0] = 0; 849 dlen[0] = 1; 850 851 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1); 852 if (ret) { 853 PMD_INIT_LOG(ERR, "Failed to disable allmulticast"); 854 return -EAGAIN; 855 } 856 857 return 0; 858 } 859 860 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */ 861 static int 862 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) 863 { 864 struct virtio_hw *hw = dev->data->dev_private; 865 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 866 hw->vtnet_hdr_size; 867 uint32_t frame_size = mtu + ether_hdr_len; 868 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len; 869 870 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN); 871 872 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) { 873 PMD_INIT_LOG(ERR, "MTU should be between %d and %d", 874 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len); 875 return -EINVAL; 876 } 877 return 0; 878 } 879 880 static int 881 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id) 882 { 883 struct virtio_hw *hw = dev->data->dev_private; 884 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 885 struct virtqueue *vq = rxvq->vq; 886 887 virtqueue_enable_intr(vq); 888 virtio_mb(hw->weak_barriers); 889 return 0; 890 } 891 892 static int 893 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id) 894 { 895 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id]; 896 struct virtqueue *vq = rxvq->vq; 897 898 virtqueue_disable_intr(vq); 899 return 0; 900 } 901 902 /* 903 * dev_ops for virtio, bare necessities for basic operation 904 */ 905 static const struct eth_dev_ops virtio_eth_dev_ops = { 906 .dev_configure = virtio_dev_configure, 907 .dev_start = virtio_dev_start, 908 .dev_stop = virtio_dev_stop, 909 .dev_close = virtio_dev_close, 910 .promiscuous_enable = virtio_dev_promiscuous_enable, 911 .promiscuous_disable = virtio_dev_promiscuous_disable, 912 .allmulticast_enable = virtio_dev_allmulticast_enable, 913 .allmulticast_disable = virtio_dev_allmulticast_disable, 914 .mtu_set = virtio_mtu_set, 915 .dev_infos_get = virtio_dev_info_get, 916 .stats_get = virtio_dev_stats_get, 917 .xstats_get = virtio_dev_xstats_get, 918 .xstats_get_names = virtio_dev_xstats_get_names, 919 .stats_reset = virtio_dev_stats_reset, 920 .xstats_reset = virtio_dev_stats_reset, 921 .link_update = virtio_dev_link_update, 922 .vlan_offload_set = virtio_dev_vlan_offload_set, 923 .rx_queue_setup = virtio_dev_rx_queue_setup, 924 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable, 925 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable, 926 .rx_queue_release = virtio_dev_queue_release, 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 && !vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1362 PMD_INIT_LOG(ERR, 1363 "VIRTIO_F_VERSION_1 features is not enabled."); 1364 return -1; 1365 } 1366 1367 if (hw->modern || hw->virtio_user_dev) { 1368 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1369 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1370 PMD_INIT_LOG(ERR, 1371 "failed to set FEATURES_OK status!"); 1372 return -1; 1373 } 1374 } 1375 1376 hw->req_guest_features = req_features; 1377 1378 return 0; 1379 } 1380 1381 int 1382 virtio_dev_pause(struct rte_eth_dev *dev) 1383 { 1384 struct virtio_hw *hw = dev->data->dev_private; 1385 1386 rte_spinlock_lock(&hw->state_lock); 1387 1388 if (hw->started == 0) { 1389 /* Device is just stopped. */ 1390 rte_spinlock_unlock(&hw->state_lock); 1391 return -1; 1392 } 1393 hw->started = 0; 1394 /* 1395 * Prevent the worker threads from touching queues to avoid contention, 1396 * 1 ms should be enough for the ongoing Tx function to finish. 1397 */ 1398 rte_delay_ms(1); 1399 return 0; 1400 } 1401 1402 /* 1403 * Recover hw state to let the worker threads continue. 1404 */ 1405 void 1406 virtio_dev_resume(struct rte_eth_dev *dev) 1407 { 1408 struct virtio_hw *hw = dev->data->dev_private; 1409 1410 hw->started = 1; 1411 rte_spinlock_unlock(&hw->state_lock); 1412 } 1413 1414 /* 1415 * Should be called only after device is paused. 1416 */ 1417 int 1418 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1419 int nb_pkts) 1420 { 1421 struct virtio_hw *hw = dev->data->dev_private; 1422 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1423 int ret; 1424 1425 hw->inject_pkts = tx_pkts; 1426 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1427 hw->inject_pkts = NULL; 1428 1429 return ret; 1430 } 1431 1432 static void 1433 virtio_notify_peers(struct rte_eth_dev *dev) 1434 { 1435 struct virtio_hw *hw = dev->data->dev_private; 1436 struct virtnet_rx *rxvq; 1437 struct rte_mbuf *rarp_mbuf; 1438 1439 if (!dev->data->rx_queues) 1440 return; 1441 1442 rxvq = dev->data->rx_queues[0]; 1443 if (!rxvq) 1444 return; 1445 1446 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1447 (struct rte_ether_addr *)hw->mac_addr); 1448 if (rarp_mbuf == NULL) { 1449 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1450 return; 1451 } 1452 1453 /* If virtio port just stopped, no need to send RARP */ 1454 if (virtio_dev_pause(dev) < 0) { 1455 rte_pktmbuf_free(rarp_mbuf); 1456 return; 1457 } 1458 1459 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1460 virtio_dev_resume(dev); 1461 } 1462 1463 static void 1464 virtio_ack_link_announce(struct rte_eth_dev *dev) 1465 { 1466 struct virtio_hw *hw = dev->data->dev_private; 1467 struct virtio_pmd_ctrl ctrl; 1468 1469 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1470 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1471 1472 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1473 } 1474 1475 /* 1476 * Process virtio config changed interrupt. Call the callback 1477 * if link state changed, generate gratuitous RARP packet if 1478 * the status indicates an ANNOUNCE. 1479 */ 1480 void 1481 virtio_interrupt_handler(void *param) 1482 { 1483 struct rte_eth_dev *dev = param; 1484 struct virtio_hw *hw = dev->data->dev_private; 1485 uint8_t isr; 1486 uint16_t status; 1487 1488 /* Read interrupt status which clears interrupt */ 1489 isr = vtpci_isr(hw); 1490 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1491 1492 if (virtio_intr_unmask(dev) < 0) 1493 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1494 1495 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1496 if (virtio_dev_link_update(dev, 0) == 0) 1497 rte_eth_dev_callback_process(dev, 1498 RTE_ETH_EVENT_INTR_LSC, 1499 NULL); 1500 1501 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1502 vtpci_read_dev_config(hw, 1503 offsetof(struct virtio_net_config, status), 1504 &status, sizeof(status)); 1505 if (status & VIRTIO_NET_S_ANNOUNCE) { 1506 virtio_notify_peers(dev); 1507 if (hw->cvq) 1508 virtio_ack_link_announce(dev); 1509 } 1510 } 1511 } 1512 } 1513 1514 /* set rx and tx handlers according to what is supported */ 1515 static void 1516 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1517 { 1518 struct virtio_hw *hw = eth_dev->data->dev_private; 1519 1520 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1521 if (vtpci_packed_queue(hw)) { 1522 PMD_INIT_LOG(INFO, 1523 "virtio: using packed ring %s Tx path on port %u", 1524 hw->use_vec_tx ? "vectorized" : "standard", 1525 eth_dev->data->port_id); 1526 if (hw->use_vec_tx) 1527 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1528 else 1529 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1530 } else { 1531 if (hw->use_inorder_tx) { 1532 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1533 eth_dev->data->port_id); 1534 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1535 } else { 1536 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1537 eth_dev->data->port_id); 1538 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1539 } 1540 } 1541 1542 if (vtpci_packed_queue(hw)) { 1543 if (hw->use_vec_rx) { 1544 PMD_INIT_LOG(INFO, 1545 "virtio: using packed ring vectorized Rx path on port %u", 1546 eth_dev->data->port_id); 1547 eth_dev->rx_pkt_burst = 1548 &virtio_recv_pkts_packed_vec; 1549 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1550 PMD_INIT_LOG(INFO, 1551 "virtio: using packed ring mergeable buffer Rx path on port %u", 1552 eth_dev->data->port_id); 1553 eth_dev->rx_pkt_burst = 1554 &virtio_recv_mergeable_pkts_packed; 1555 } else { 1556 PMD_INIT_LOG(INFO, 1557 "virtio: using packed ring standard Rx path on port %u", 1558 eth_dev->data->port_id); 1559 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1560 } 1561 } else { 1562 if (hw->use_vec_rx) { 1563 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1564 eth_dev->data->port_id); 1565 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1566 } else if (hw->use_inorder_rx) { 1567 PMD_INIT_LOG(INFO, 1568 "virtio: using inorder Rx path on port %u", 1569 eth_dev->data->port_id); 1570 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1571 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1572 PMD_INIT_LOG(INFO, 1573 "virtio: using mergeable buffer Rx path on port %u", 1574 eth_dev->data->port_id); 1575 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1576 } else { 1577 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1578 eth_dev->data->port_id); 1579 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1580 } 1581 } 1582 1583 } 1584 1585 /* Only support 1:1 queue/interrupt mapping so far. 1586 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1587 * interrupt vectors (<N+1). 1588 */ 1589 static int 1590 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1591 { 1592 uint32_t i; 1593 struct virtio_hw *hw = dev->data->dev_private; 1594 1595 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1596 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1597 dev->intr_handle->intr_vec[i] = i + 1; 1598 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1599 VIRTIO_MSI_NO_VECTOR) { 1600 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1601 return -EBUSY; 1602 } 1603 } 1604 1605 return 0; 1606 } 1607 1608 static void 1609 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1610 { 1611 uint32_t i; 1612 struct virtio_hw *hw = dev->data->dev_private; 1613 1614 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1615 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1616 VTPCI_OPS(hw)->set_queue_irq(hw, 1617 hw->vqs[i * VTNET_CQ], 1618 VIRTIO_MSI_NO_VECTOR); 1619 } 1620 1621 static int 1622 virtio_configure_intr(struct rte_eth_dev *dev) 1623 { 1624 struct virtio_hw *hw = dev->data->dev_private; 1625 1626 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1627 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1628 return -ENOTSUP; 1629 } 1630 1631 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1632 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1633 return -1; 1634 } 1635 1636 if (!dev->intr_handle->intr_vec) { 1637 dev->intr_handle->intr_vec = 1638 rte_zmalloc("intr_vec", 1639 hw->max_queue_pairs * sizeof(int), 0); 1640 if (!dev->intr_handle->intr_vec) { 1641 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1642 hw->max_queue_pairs); 1643 return -ENOMEM; 1644 } 1645 } 1646 1647 /* Re-register callback to update max_intr */ 1648 rte_intr_callback_unregister(dev->intr_handle, 1649 virtio_interrupt_handler, 1650 dev); 1651 rte_intr_callback_register(dev->intr_handle, 1652 virtio_interrupt_handler, 1653 dev); 1654 1655 /* DO NOT try to remove this! This function will enable msix, or QEMU 1656 * will encounter SIGSEGV when DRIVER_OK is sent. 1657 * And for legacy devices, this should be done before queue/vec binding 1658 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1659 * (22) will be ignored. 1660 */ 1661 if (virtio_intr_enable(dev) < 0) { 1662 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1663 return -1; 1664 } 1665 1666 if (virtio_queues_bind_intr(dev) < 0) { 1667 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1668 return -1; 1669 } 1670 1671 return 0; 1672 } 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 == ETH_SPEED_NUM_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->duplex == DUPLEX_UNKNOWN) 1743 hw->duplex = ETH_LINK_FULL_DUPLEX; 1744 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1745 hw->speed, hw->duplex); 1746 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1747 config = &local_config; 1748 1749 vtpci_read_dev_config(hw, 1750 offsetof(struct virtio_net_config, mac), 1751 &config->mac, sizeof(config->mac)); 1752 1753 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1754 vtpci_read_dev_config(hw, 1755 offsetof(struct virtio_net_config, status), 1756 &config->status, sizeof(config->status)); 1757 } else { 1758 PMD_INIT_LOG(DEBUG, 1759 "VIRTIO_NET_F_STATUS is not supported"); 1760 config->status = 0; 1761 } 1762 1763 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1764 vtpci_read_dev_config(hw, 1765 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1766 &config->max_virtqueue_pairs, 1767 sizeof(config->max_virtqueue_pairs)); 1768 } else { 1769 PMD_INIT_LOG(DEBUG, 1770 "VIRTIO_NET_F_MQ is not supported"); 1771 config->max_virtqueue_pairs = 1; 1772 } 1773 1774 hw->max_queue_pairs = config->max_virtqueue_pairs; 1775 1776 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1777 vtpci_read_dev_config(hw, 1778 offsetof(struct virtio_net_config, mtu), 1779 &config->mtu, 1780 sizeof(config->mtu)); 1781 1782 /* 1783 * MTU value has already been checked at negotiation 1784 * time, but check again in case it has changed since 1785 * then, which should not happen. 1786 */ 1787 if (config->mtu < RTE_ETHER_MIN_MTU) { 1788 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1789 config->mtu); 1790 return -1; 1791 } 1792 1793 hw->max_mtu = config->mtu; 1794 /* Set initial MTU to maximum one supported by vhost */ 1795 eth_dev->data->mtu = config->mtu; 1796 1797 } else { 1798 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1799 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1800 } 1801 1802 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1803 config->max_virtqueue_pairs); 1804 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1805 PMD_INIT_LOG(DEBUG, 1806 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1807 config->mac[0], config->mac[1], 1808 config->mac[2], config->mac[3], 1809 config->mac[4], config->mac[5]); 1810 } else { 1811 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1812 hw->max_queue_pairs = 1; 1813 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1814 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1815 } 1816 1817 ret = virtio_alloc_queues(eth_dev); 1818 if (ret < 0) 1819 return ret; 1820 1821 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1822 if (virtio_configure_intr(eth_dev) < 0) { 1823 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1824 virtio_free_queues(hw); 1825 return -1; 1826 } 1827 } 1828 1829 vtpci_reinit_complete(hw); 1830 1831 if (pci_dev) 1832 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1833 eth_dev->data->port_id, pci_dev->id.vendor_id, 1834 pci_dev->id.device_id); 1835 1836 return 0; 1837 } 1838 1839 /* 1840 * Remap the PCI device again (IO port map for legacy device and 1841 * memory map for modern device), so that the secondary process 1842 * could have the PCI initiated correctly. 1843 */ 1844 static int 1845 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1846 { 1847 if (hw->modern) { 1848 /* 1849 * We don't have to re-parse the PCI config space, since 1850 * rte_pci_map_device() makes sure the mapped address 1851 * in secondary process would equal to the one mapped in 1852 * the primary process: error will be returned if that 1853 * requirement is not met. 1854 * 1855 * That said, we could simply reuse all cap pointers 1856 * (such as dev_cfg, common_cfg, etc.) parsed from the 1857 * primary process, which is stored in shared memory. 1858 */ 1859 if (rte_pci_map_device(pci_dev)) { 1860 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1861 return -1; 1862 } 1863 } else { 1864 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1865 return -1; 1866 } 1867 1868 return 0; 1869 } 1870 1871 static void 1872 virtio_set_vtpci_ops(struct virtio_hw *hw) 1873 { 1874 #ifdef RTE_VIRTIO_USER 1875 if (hw->virtio_user_dev) 1876 VTPCI_OPS(hw) = &virtio_user_ops; 1877 else 1878 #endif 1879 if (hw->modern) 1880 VTPCI_OPS(hw) = &modern_ops; 1881 else 1882 VTPCI_OPS(hw) = &legacy_ops; 1883 } 1884 1885 /* 1886 * This function is based on probe() function in virtio_pci.c 1887 * It returns 0 on success. 1888 */ 1889 int 1890 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1891 { 1892 struct virtio_hw *hw = eth_dev->data->dev_private; 1893 uint32_t speed = ETH_SPEED_NUM_UNKNOWN; 1894 int vectorized = 0; 1895 int ret; 1896 1897 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1898 PMD_INIT_LOG(ERR, 1899 "Not sufficient headroom required = %d, avail = %d", 1900 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1901 RTE_PKTMBUF_HEADROOM); 1902 1903 return -1; 1904 } 1905 1906 eth_dev->dev_ops = &virtio_eth_dev_ops; 1907 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done; 1908 1909 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1910 if (!hw->virtio_user_dev) { 1911 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1912 if (ret) 1913 return ret; 1914 } 1915 1916 virtio_set_vtpci_ops(hw); 1917 set_rxtx_funcs(eth_dev); 1918 1919 return 0; 1920 } 1921 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, 1922 NULL, &speed, &vectorized); 1923 if (ret < 0) 1924 return ret; 1925 hw->speed = speed; 1926 1927 /* Allocate memory for storing MAC addresses */ 1928 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1929 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1930 if (eth_dev->data->mac_addrs == NULL) { 1931 PMD_INIT_LOG(ERR, 1932 "Failed to allocate %d bytes needed to store MAC addresses", 1933 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1934 return -ENOMEM; 1935 } 1936 1937 hw->port_id = eth_dev->data->port_id; 1938 /* For virtio_user case the hw->virtio_user_dev is populated by 1939 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1940 */ 1941 if (!hw->virtio_user_dev) { 1942 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1943 if (ret) 1944 goto err_vtpci_init; 1945 } 1946 1947 rte_spinlock_init(&hw->state_lock); 1948 1949 /* reset device and negotiate default features */ 1950 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1951 if (ret < 0) 1952 goto err_virtio_init; 1953 1954 if (vectorized) { 1955 if (!vtpci_packed_queue(hw)) { 1956 hw->use_vec_rx = 1; 1957 } else { 1958 #if !defined(CC_AVX512_SUPPORT) 1959 PMD_DRV_LOG(INFO, 1960 "building environment do not support packed ring vectorized"); 1961 #else 1962 hw->use_vec_rx = 1; 1963 hw->use_vec_tx = 1; 1964 #endif 1965 } 1966 } 1967 1968 hw->opened = true; 1969 1970 return 0; 1971 1972 err_virtio_init: 1973 if (!hw->virtio_user_dev) { 1974 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1975 if (!hw->modern) 1976 rte_pci_ioport_unmap(VTPCI_IO(hw)); 1977 } 1978 err_vtpci_init: 1979 rte_free(eth_dev->data->mac_addrs); 1980 eth_dev->data->mac_addrs = NULL; 1981 return ret; 1982 } 1983 1984 static int 1985 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1986 { 1987 PMD_INIT_FUNC_TRACE(); 1988 1989 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1990 return 0; 1991 1992 virtio_dev_stop(eth_dev); 1993 virtio_dev_close(eth_dev); 1994 1995 eth_dev->dev_ops = NULL; 1996 eth_dev->tx_pkt_burst = NULL; 1997 eth_dev->rx_pkt_burst = NULL; 1998 1999 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 2000 2001 return 0; 2002 } 2003 2004 2005 static int vdpa_check_handler(__rte_unused const char *key, 2006 const char *value, void *ret_val) 2007 { 2008 if (strcmp(value, "1") == 0) 2009 *(int *)ret_val = 1; 2010 else 2011 *(int *)ret_val = 0; 2012 2013 return 0; 2014 } 2015 2016 2017 static uint32_t 2018 virtio_dev_speed_capa_get(uint32_t speed) 2019 { 2020 switch (speed) { 2021 case ETH_SPEED_NUM_10G: 2022 return ETH_LINK_SPEED_10G; 2023 case ETH_SPEED_NUM_20G: 2024 return ETH_LINK_SPEED_20G; 2025 case ETH_SPEED_NUM_25G: 2026 return ETH_LINK_SPEED_25G; 2027 case ETH_SPEED_NUM_40G: 2028 return ETH_LINK_SPEED_40G; 2029 case ETH_SPEED_NUM_50G: 2030 return ETH_LINK_SPEED_50G; 2031 case ETH_SPEED_NUM_56G: 2032 return ETH_LINK_SPEED_56G; 2033 case ETH_SPEED_NUM_100G: 2034 return ETH_LINK_SPEED_100G; 2035 case ETH_SPEED_NUM_200G: 2036 return ETH_LINK_SPEED_200G; 2037 default: 2038 return 0; 2039 } 2040 } 2041 2042 static int vectorized_check_handler(__rte_unused const char *key, 2043 const char *value, void *ret_val) 2044 { 2045 if (strcmp(value, "1") == 0) 2046 *(int *)ret_val = 1; 2047 else 2048 *(int *)ret_val = 0; 2049 2050 return 0; 2051 } 2052 2053 #define VIRTIO_ARG_SPEED "speed" 2054 #define VIRTIO_ARG_VDPA "vdpa" 2055 #define VIRTIO_ARG_VECTORIZED "vectorized" 2056 2057 2058 static int 2059 link_speed_handler(const char *key __rte_unused, 2060 const char *value, void *ret_val) 2061 { 2062 uint32_t val; 2063 if (!value || !ret_val) 2064 return -EINVAL; 2065 val = strtoul(value, NULL, 0); 2066 /* validate input */ 2067 if (virtio_dev_speed_capa_get(val) == 0) 2068 return -EINVAL; 2069 *(uint32_t *)ret_val = val; 2070 2071 return 0; 2072 } 2073 2074 2075 static int 2076 virtio_dev_devargs_parse(struct rte_devargs *devargs, int *vdpa, 2077 uint32_t *speed, int *vectorized) 2078 { 2079 struct rte_kvargs *kvlist; 2080 int ret = 0; 2081 2082 if (devargs == NULL) 2083 return 0; 2084 2085 kvlist = rte_kvargs_parse(devargs->args, NULL); 2086 if (kvlist == NULL) { 2087 PMD_INIT_LOG(ERR, "error when parsing param"); 2088 return 0; 2089 } 2090 if (vdpa && rte_kvargs_count(kvlist, VIRTIO_ARG_VDPA) == 1) { 2091 /* vdpa mode selected when there's a key-value pair: 2092 * vdpa=1 2093 */ 2094 ret = rte_kvargs_process(kvlist, VIRTIO_ARG_VDPA, 2095 vdpa_check_handler, vdpa); 2096 if (ret < 0) { 2097 PMD_INIT_LOG(ERR, "Failed to parse %s", 2098 VIRTIO_ARG_VDPA); 2099 goto exit; 2100 } 2101 } 2102 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2103 ret = rte_kvargs_process(kvlist, 2104 VIRTIO_ARG_SPEED, 2105 link_speed_handler, speed); 2106 if (ret < 0) { 2107 PMD_INIT_LOG(ERR, "Failed to parse %s", 2108 VIRTIO_ARG_SPEED); 2109 goto exit; 2110 } 2111 } 2112 2113 if (vectorized && 2114 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2115 ret = rte_kvargs_process(kvlist, 2116 VIRTIO_ARG_VECTORIZED, 2117 vectorized_check_handler, vectorized); 2118 if (ret < 0) { 2119 PMD_INIT_LOG(ERR, "Failed to parse %s", 2120 VIRTIO_ARG_VECTORIZED); 2121 goto exit; 2122 } 2123 } 2124 2125 exit: 2126 rte_kvargs_free(kvlist); 2127 return ret; 2128 } 2129 2130 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 2131 struct rte_pci_device *pci_dev) 2132 { 2133 int vdpa = 0; 2134 int ret = 0; 2135 2136 ret = virtio_dev_devargs_parse(pci_dev->device.devargs, &vdpa, NULL, 2137 NULL); 2138 if (ret < 0) { 2139 PMD_INIT_LOG(ERR, "devargs parsing is failed"); 2140 return ret; 2141 } 2142 /* virtio pmd skips probe if device needs to work in vdpa mode */ 2143 if (vdpa == 1) 2144 return 1; 2145 2146 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 2147 eth_virtio_dev_init); 2148 } 2149 2150 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 2151 { 2152 int ret; 2153 2154 ret = rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 2155 /* Port has already been released by close. */ 2156 if (ret == -ENODEV) 2157 ret = 0; 2158 return ret; 2159 } 2160 2161 static struct rte_pci_driver rte_virtio_pmd = { 2162 .driver = { 2163 .name = "net_virtio", 2164 }, 2165 .id_table = pci_id_virtio_map, 2166 .drv_flags = 0, 2167 .probe = eth_virtio_pci_probe, 2168 .remove = eth_virtio_pci_remove, 2169 }; 2170 2171 RTE_INIT(rte_virtio_pmd_init) 2172 { 2173 rte_eal_iopl_init(); 2174 rte_pci_register(&rte_virtio_pmd); 2175 } 2176 2177 static bool 2178 rx_offload_enabled(struct virtio_hw *hw) 2179 { 2180 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2181 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2182 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2183 } 2184 2185 static bool 2186 tx_offload_enabled(struct virtio_hw *hw) 2187 { 2188 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 2189 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2190 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2191 } 2192 2193 /* 2194 * Configure virtio device 2195 * It returns 0 on success. 2196 */ 2197 static int 2198 virtio_dev_configure(struct rte_eth_dev *dev) 2199 { 2200 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2201 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2202 struct virtio_hw *hw = dev->data->dev_private; 2203 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2204 hw->vtnet_hdr_size; 2205 uint64_t rx_offloads = rxmode->offloads; 2206 uint64_t tx_offloads = txmode->offloads; 2207 uint64_t req_features; 2208 int ret; 2209 2210 PMD_INIT_LOG(DEBUG, "configure"); 2211 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2212 2213 if (rxmode->mq_mode != ETH_MQ_RX_NONE) { 2214 PMD_DRV_LOG(ERR, 2215 "Unsupported Rx multi queue mode %d", 2216 rxmode->mq_mode); 2217 return -EINVAL; 2218 } 2219 2220 if (txmode->mq_mode != ETH_MQ_TX_NONE) { 2221 PMD_DRV_LOG(ERR, 2222 "Unsupported Tx multi queue mode %d", 2223 txmode->mq_mode); 2224 return -EINVAL; 2225 } 2226 2227 if (dev->data->dev_conf.intr_conf.rxq) { 2228 ret = virtio_init_device(dev, hw->req_guest_features); 2229 if (ret < 0) 2230 return ret; 2231 } 2232 2233 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2234 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2235 2236 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2237 DEV_RX_OFFLOAD_TCP_CKSUM)) 2238 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2239 2240 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2241 req_features |= 2242 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2243 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2244 2245 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2246 DEV_TX_OFFLOAD_TCP_CKSUM)) 2247 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2248 2249 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2250 req_features |= 2251 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2252 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2253 2254 /* if request features changed, reinit the device */ 2255 if (req_features != hw->req_guest_features) { 2256 ret = virtio_init_device(dev, req_features); 2257 if (ret < 0) 2258 return ret; 2259 } 2260 2261 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2262 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2263 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2264 PMD_DRV_LOG(ERR, 2265 "rx checksum not available on this host"); 2266 return -ENOTSUP; 2267 } 2268 2269 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2270 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2271 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2272 PMD_DRV_LOG(ERR, 2273 "Large Receive Offload not available on this host"); 2274 return -ENOTSUP; 2275 } 2276 2277 /* start control queue */ 2278 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2279 virtio_dev_cq_start(dev); 2280 2281 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2282 hw->vlan_strip = 1; 2283 2284 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2285 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2286 PMD_DRV_LOG(ERR, 2287 "vlan filtering not available on this host"); 2288 return -ENOTSUP; 2289 } 2290 2291 hw->has_tx_offload = tx_offload_enabled(hw); 2292 hw->has_rx_offload = rx_offload_enabled(hw); 2293 2294 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2295 /* Enable vector (0) for Link State Intrerrupt */ 2296 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2297 VIRTIO_MSI_NO_VECTOR) { 2298 PMD_DRV_LOG(ERR, "failed to set config vector"); 2299 return -EBUSY; 2300 } 2301 2302 if (vtpci_packed_queue(hw)) { 2303 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2304 if ((hw->use_vec_rx || hw->use_vec_tx) && 2305 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2306 !vtpci_with_feature(hw, VIRTIO_F_IN_ORDER) || 2307 !vtpci_with_feature(hw, VIRTIO_F_VERSION_1))) { 2308 PMD_DRV_LOG(INFO, 2309 "disabled packed ring vectorized path for requirements not met"); 2310 hw->use_vec_rx = 0; 2311 hw->use_vec_tx = 0; 2312 } 2313 #else 2314 hw->use_vec_rx = 0; 2315 hw->use_vec_tx = 0; 2316 #endif 2317 2318 if (hw->use_vec_rx) { 2319 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2320 PMD_DRV_LOG(INFO, 2321 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2322 hw->use_vec_rx = 0; 2323 } 2324 2325 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) { 2326 PMD_DRV_LOG(INFO, 2327 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2328 hw->use_vec_rx = 0; 2329 } 2330 } 2331 } else { 2332 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2333 hw->use_inorder_tx = 1; 2334 hw->use_inorder_rx = 1; 2335 hw->use_vec_rx = 0; 2336 } 2337 2338 if (hw->use_vec_rx) { 2339 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2340 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2341 PMD_DRV_LOG(INFO, 2342 "disabled split ring vectorized path for requirement not met"); 2343 hw->use_vec_rx = 0; 2344 } 2345 #endif 2346 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2347 PMD_DRV_LOG(INFO, 2348 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2349 hw->use_vec_rx = 0; 2350 } 2351 2352 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2353 DEV_RX_OFFLOAD_TCP_CKSUM | 2354 DEV_RX_OFFLOAD_TCP_LRO | 2355 DEV_RX_OFFLOAD_VLAN_STRIP)) { 2356 PMD_DRV_LOG(INFO, 2357 "disabled split ring vectorized rx for offloading enabled"); 2358 hw->use_vec_rx = 0; 2359 } 2360 } 2361 } 2362 2363 return 0; 2364 } 2365 2366 2367 static int 2368 virtio_dev_start(struct rte_eth_dev *dev) 2369 { 2370 uint16_t nb_queues, i; 2371 struct virtnet_rx *rxvq; 2372 struct virtnet_tx *txvq __rte_unused; 2373 struct virtio_hw *hw = dev->data->dev_private; 2374 int ret; 2375 2376 /* Finish the initialization of the queues */ 2377 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2378 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2379 if (ret < 0) 2380 return ret; 2381 } 2382 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2383 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2384 if (ret < 0) 2385 return ret; 2386 } 2387 2388 /* check if lsc interrupt feature is enabled */ 2389 if (dev->data->dev_conf.intr_conf.lsc) { 2390 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2391 PMD_DRV_LOG(ERR, "link status not supported by host"); 2392 return -ENOTSUP; 2393 } 2394 } 2395 2396 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2397 * in device configure, but it could be unmapped when device is 2398 * stopped. 2399 */ 2400 if (dev->data->dev_conf.intr_conf.lsc || 2401 dev->data->dev_conf.intr_conf.rxq) { 2402 virtio_intr_disable(dev); 2403 2404 /* Setup interrupt callback */ 2405 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2406 rte_intr_callback_register(dev->intr_handle, 2407 virtio_interrupt_handler, 2408 dev); 2409 2410 if (virtio_intr_enable(dev) < 0) { 2411 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2412 return -EIO; 2413 } 2414 } 2415 2416 /*Notify the backend 2417 *Otherwise the tap backend might already stop its queue due to fullness. 2418 *vhost backend will have no chance to be waked up 2419 */ 2420 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2421 if (hw->max_queue_pairs > 1) { 2422 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2423 return -EINVAL; 2424 } 2425 2426 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2427 2428 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2429 rxvq = dev->data->rx_queues[i]; 2430 /* Flush the old packets */ 2431 virtqueue_rxvq_flush(rxvq->vq); 2432 virtqueue_notify(rxvq->vq); 2433 } 2434 2435 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2436 txvq = dev->data->tx_queues[i]; 2437 virtqueue_notify(txvq->vq); 2438 } 2439 2440 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2441 2442 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2443 rxvq = dev->data->rx_queues[i]; 2444 VIRTQUEUE_DUMP(rxvq->vq); 2445 } 2446 2447 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2448 txvq = dev->data->tx_queues[i]; 2449 VIRTQUEUE_DUMP(txvq->vq); 2450 } 2451 2452 set_rxtx_funcs(dev); 2453 hw->started = true; 2454 2455 /* Initialize Link state */ 2456 virtio_dev_link_update(dev, 0); 2457 2458 return 0; 2459 } 2460 2461 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2462 { 2463 struct virtio_hw *hw = dev->data->dev_private; 2464 uint16_t nr_vq = virtio_get_nr_vq(hw); 2465 const char *type __rte_unused; 2466 unsigned int i, mbuf_num = 0; 2467 struct virtqueue *vq; 2468 struct rte_mbuf *buf; 2469 int queue_type; 2470 2471 if (hw->vqs == NULL) 2472 return; 2473 2474 for (i = 0; i < nr_vq; i++) { 2475 vq = hw->vqs[i]; 2476 if (!vq) 2477 continue; 2478 2479 queue_type = virtio_get_queue_type(hw, i); 2480 if (queue_type == VTNET_RQ) 2481 type = "rxq"; 2482 else if (queue_type == VTNET_TQ) 2483 type = "txq"; 2484 else 2485 continue; 2486 2487 PMD_INIT_LOG(DEBUG, 2488 "Before freeing %s[%d] used and unused buf", 2489 type, i); 2490 VIRTQUEUE_DUMP(vq); 2491 2492 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2493 rte_pktmbuf_free(buf); 2494 mbuf_num++; 2495 } 2496 2497 PMD_INIT_LOG(DEBUG, 2498 "After freeing %s[%d] used and unused buf", 2499 type, i); 2500 VIRTQUEUE_DUMP(vq); 2501 } 2502 2503 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2504 } 2505 2506 /* 2507 * Stop device: disable interrupt and mark link down 2508 */ 2509 static void 2510 virtio_dev_stop(struct rte_eth_dev *dev) 2511 { 2512 struct virtio_hw *hw = dev->data->dev_private; 2513 struct rte_eth_link link; 2514 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2515 2516 PMD_INIT_LOG(DEBUG, "stop"); 2517 2518 rte_spinlock_lock(&hw->state_lock); 2519 if (!hw->started) 2520 goto out_unlock; 2521 hw->started = false; 2522 2523 if (intr_conf->lsc || intr_conf->rxq) { 2524 virtio_intr_disable(dev); 2525 2526 /* Reset interrupt callback */ 2527 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2528 rte_intr_callback_unregister(dev->intr_handle, 2529 virtio_interrupt_handler, 2530 dev); 2531 } 2532 } 2533 2534 memset(&link, 0, sizeof(link)); 2535 rte_eth_linkstatus_set(dev, &link); 2536 out_unlock: 2537 rte_spinlock_unlock(&hw->state_lock); 2538 } 2539 2540 static int 2541 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2542 { 2543 struct rte_eth_link link; 2544 uint16_t status; 2545 struct virtio_hw *hw = dev->data->dev_private; 2546 2547 memset(&link, 0, sizeof(link)); 2548 link.link_duplex = hw->duplex; 2549 link.link_speed = hw->speed; 2550 link.link_autoneg = ETH_LINK_AUTONEG; 2551 2552 if (!hw->started) { 2553 link.link_status = ETH_LINK_DOWN; 2554 link.link_speed = ETH_SPEED_NUM_NONE; 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 link.link_speed = ETH_SPEED_NUM_NONE; 2563 PMD_INIT_LOG(DEBUG, "Port %d is down", 2564 dev->data->port_id); 2565 } else { 2566 link.link_status = ETH_LINK_UP; 2567 PMD_INIT_LOG(DEBUG, "Port %d is up", 2568 dev->data->port_id); 2569 } 2570 } else { 2571 link.link_status = ETH_LINK_UP; 2572 } 2573 2574 return rte_eth_linkstatus_set(dev, &link); 2575 } 2576 2577 static int 2578 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask) 2579 { 2580 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2581 struct virtio_hw *hw = dev->data->dev_private; 2582 uint64_t offloads = rxmode->offloads; 2583 2584 if (mask & ETH_VLAN_FILTER_MASK) { 2585 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) && 2586 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2587 2588 PMD_DRV_LOG(NOTICE, 2589 "vlan filtering not available on this host"); 2590 2591 return -ENOTSUP; 2592 } 2593 } 2594 2595 if (mask & ETH_VLAN_STRIP_MASK) 2596 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP); 2597 2598 return 0; 2599 } 2600 2601 static int 2602 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) 2603 { 2604 uint64_t tso_mask, host_features; 2605 struct virtio_hw *hw = dev->data->dev_private; 2606 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed); 2607 2608 dev_info->max_rx_queues = 2609 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); 2610 dev_info->max_tx_queues = 2611 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES); 2612 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE; 2613 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN; 2614 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS; 2615 2616 host_features = VTPCI_OPS(hw)->get_features(hw); 2617 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP; 2618 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME; 2619 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) { 2620 dev_info->rx_offload_capa |= 2621 DEV_RX_OFFLOAD_TCP_CKSUM | 2622 DEV_RX_OFFLOAD_UDP_CKSUM; 2623 } 2624 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN)) 2625 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER; 2626 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2627 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2628 if ((host_features & tso_mask) == tso_mask) 2629 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO; 2630 2631 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS | 2632 DEV_TX_OFFLOAD_VLAN_INSERT; 2633 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) { 2634 dev_info->tx_offload_capa |= 2635 DEV_TX_OFFLOAD_UDP_CKSUM | 2636 DEV_TX_OFFLOAD_TCP_CKSUM; 2637 } 2638 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2639 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2640 if ((host_features & tso_mask) == tso_mask) 2641 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 2642 2643 return 0; 2644 } 2645 2646 /* 2647 * It enables testpmd to collect per queue stats. 2648 */ 2649 static int 2650 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev, 2651 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx, 2652 __rte_unused uint8_t is_rx) 2653 { 2654 return 0; 2655 } 2656 2657 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__); 2658 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map); 2659 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci"); 2660 RTE_LOG_REGISTER(virtio_logtype_init, pmd.net.virtio.init, NOTICE); 2661 RTE_LOG_REGISTER(virtio_logtype_driver, pmd.net.virtio.driver, NOTICE); 2662