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 && !vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) { 1358 PMD_INIT_LOG(ERR, 1359 "VIRTIO_F_VERSION_1 features is not enabled."); 1360 return -1; 1361 } 1362 1363 if (hw->modern || hw->virtio_user_dev) { 1364 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK); 1365 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) { 1366 PMD_INIT_LOG(ERR, 1367 "failed to set FEATURES_OK status!"); 1368 return -1; 1369 } 1370 } 1371 1372 hw->req_guest_features = req_features; 1373 1374 return 0; 1375 } 1376 1377 int 1378 virtio_dev_pause(struct rte_eth_dev *dev) 1379 { 1380 struct virtio_hw *hw = dev->data->dev_private; 1381 1382 rte_spinlock_lock(&hw->state_lock); 1383 1384 if (hw->started == 0) { 1385 /* Device is just stopped. */ 1386 rte_spinlock_unlock(&hw->state_lock); 1387 return -1; 1388 } 1389 hw->started = 0; 1390 /* 1391 * Prevent the worker threads from touching queues to avoid contention, 1392 * 1 ms should be enough for the ongoing Tx function to finish. 1393 */ 1394 rte_delay_ms(1); 1395 return 0; 1396 } 1397 1398 /* 1399 * Recover hw state to let the worker threads continue. 1400 */ 1401 void 1402 virtio_dev_resume(struct rte_eth_dev *dev) 1403 { 1404 struct virtio_hw *hw = dev->data->dev_private; 1405 1406 hw->started = 1; 1407 rte_spinlock_unlock(&hw->state_lock); 1408 } 1409 1410 /* 1411 * Should be called only after device is paused. 1412 */ 1413 int 1414 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts, 1415 int nb_pkts) 1416 { 1417 struct virtio_hw *hw = dev->data->dev_private; 1418 struct virtnet_tx *txvq = dev->data->tx_queues[0]; 1419 int ret; 1420 1421 hw->inject_pkts = tx_pkts; 1422 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts); 1423 hw->inject_pkts = NULL; 1424 1425 return ret; 1426 } 1427 1428 static void 1429 virtio_notify_peers(struct rte_eth_dev *dev) 1430 { 1431 struct virtio_hw *hw = dev->data->dev_private; 1432 struct virtnet_rx *rxvq; 1433 struct rte_mbuf *rarp_mbuf; 1434 1435 if (!dev->data->rx_queues) 1436 return; 1437 1438 rxvq = dev->data->rx_queues[0]; 1439 if (!rxvq) 1440 return; 1441 1442 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool, 1443 (struct rte_ether_addr *)hw->mac_addr); 1444 if (rarp_mbuf == NULL) { 1445 PMD_DRV_LOG(ERR, "failed to make RARP packet."); 1446 return; 1447 } 1448 1449 /* If virtio port just stopped, no need to send RARP */ 1450 if (virtio_dev_pause(dev) < 0) { 1451 rte_pktmbuf_free(rarp_mbuf); 1452 return; 1453 } 1454 1455 virtio_inject_pkts(dev, &rarp_mbuf, 1); 1456 virtio_dev_resume(dev); 1457 } 1458 1459 static void 1460 virtio_ack_link_announce(struct rte_eth_dev *dev) 1461 { 1462 struct virtio_hw *hw = dev->data->dev_private; 1463 struct virtio_pmd_ctrl ctrl; 1464 1465 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE; 1466 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK; 1467 1468 virtio_send_command(hw->cvq, &ctrl, NULL, 0); 1469 } 1470 1471 /* 1472 * Process virtio config changed interrupt. Call the callback 1473 * if link state changed, generate gratuitous RARP packet if 1474 * the status indicates an ANNOUNCE. 1475 */ 1476 void 1477 virtio_interrupt_handler(void *param) 1478 { 1479 struct rte_eth_dev *dev = param; 1480 struct virtio_hw *hw = dev->data->dev_private; 1481 uint8_t isr; 1482 uint16_t status; 1483 1484 /* Read interrupt status which clears interrupt */ 1485 isr = vtpci_isr(hw); 1486 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr); 1487 1488 if (virtio_intr_unmask(dev) < 0) 1489 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1490 1491 if (isr & VIRTIO_PCI_ISR_CONFIG) { 1492 if (virtio_dev_link_update(dev, 0) == 0) 1493 rte_eth_dev_callback_process(dev, 1494 RTE_ETH_EVENT_INTR_LSC, 1495 NULL); 1496 1497 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1498 vtpci_read_dev_config(hw, 1499 offsetof(struct virtio_net_config, status), 1500 &status, sizeof(status)); 1501 if (status & VIRTIO_NET_S_ANNOUNCE) { 1502 virtio_notify_peers(dev); 1503 if (hw->cvq) 1504 virtio_ack_link_announce(dev); 1505 } 1506 } 1507 } 1508 } 1509 1510 /* set rx and tx handlers according to what is supported */ 1511 static void 1512 set_rxtx_funcs(struct rte_eth_dev *eth_dev) 1513 { 1514 struct virtio_hw *hw = eth_dev->data->dev_private; 1515 1516 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare; 1517 if (vtpci_packed_queue(hw)) { 1518 PMD_INIT_LOG(INFO, 1519 "virtio: using packed ring %s Tx path on port %u", 1520 hw->use_vec_tx ? "vectorized" : "standard", 1521 eth_dev->data->port_id); 1522 if (hw->use_vec_tx) 1523 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec; 1524 else 1525 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed; 1526 } else { 1527 if (hw->use_inorder_tx) { 1528 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", 1529 eth_dev->data->port_id); 1530 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; 1531 } else { 1532 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", 1533 eth_dev->data->port_id); 1534 eth_dev->tx_pkt_burst = virtio_xmit_pkts; 1535 } 1536 } 1537 1538 if (vtpci_packed_queue(hw)) { 1539 if (hw->use_vec_rx) { 1540 PMD_INIT_LOG(INFO, 1541 "virtio: using packed ring vectorized Rx path on port %u", 1542 eth_dev->data->port_id); 1543 eth_dev->rx_pkt_burst = 1544 &virtio_recv_pkts_packed_vec; 1545 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1546 PMD_INIT_LOG(INFO, 1547 "virtio: using packed ring mergeable buffer Rx path on port %u", 1548 eth_dev->data->port_id); 1549 eth_dev->rx_pkt_burst = 1550 &virtio_recv_mergeable_pkts_packed; 1551 } else { 1552 PMD_INIT_LOG(INFO, 1553 "virtio: using packed ring standard Rx path on port %u", 1554 eth_dev->data->port_id); 1555 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed; 1556 } 1557 } else { 1558 if (hw->use_vec_rx) { 1559 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u", 1560 eth_dev->data->port_id); 1561 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; 1562 } else if (hw->use_inorder_rx) { 1563 PMD_INIT_LOG(INFO, 1564 "virtio: using inorder Rx path on port %u", 1565 eth_dev->data->port_id); 1566 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder; 1567 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 1568 PMD_INIT_LOG(INFO, 1569 "virtio: using mergeable buffer Rx path on port %u", 1570 eth_dev->data->port_id); 1571 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts; 1572 } else { 1573 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u", 1574 eth_dev->data->port_id); 1575 eth_dev->rx_pkt_burst = &virtio_recv_pkts; 1576 } 1577 } 1578 1579 } 1580 1581 /* Only support 1:1 queue/interrupt mapping so far. 1582 * TODO: support n:1 queue/interrupt mapping when there are limited number of 1583 * interrupt vectors (<N+1). 1584 */ 1585 static int 1586 virtio_queues_bind_intr(struct rte_eth_dev *dev) 1587 { 1588 uint32_t i; 1589 struct virtio_hw *hw = dev->data->dev_private; 1590 1591 PMD_INIT_LOG(INFO, "queue/interrupt binding"); 1592 for (i = 0; i < dev->data->nb_rx_queues; ++i) { 1593 dev->intr_handle->intr_vec[i] = i + 1; 1594 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) == 1595 VIRTIO_MSI_NO_VECTOR) { 1596 PMD_DRV_LOG(ERR, "failed to set queue vector"); 1597 return -EBUSY; 1598 } 1599 } 1600 1601 return 0; 1602 } 1603 1604 static void 1605 virtio_queues_unbind_intr(struct rte_eth_dev *dev) 1606 { 1607 uint32_t i; 1608 struct virtio_hw *hw = dev->data->dev_private; 1609 1610 PMD_INIT_LOG(INFO, "queue/interrupt unbinding"); 1611 for (i = 0; i < dev->data->nb_rx_queues; ++i) 1612 VTPCI_OPS(hw)->set_queue_irq(hw, 1613 hw->vqs[i * VTNET_CQ], 1614 VIRTIO_MSI_NO_VECTOR); 1615 } 1616 1617 static int 1618 virtio_configure_intr(struct rte_eth_dev *dev) 1619 { 1620 struct virtio_hw *hw = dev->data->dev_private; 1621 1622 if (!rte_intr_cap_multiple(dev->intr_handle)) { 1623 PMD_INIT_LOG(ERR, "Multiple intr vector not supported"); 1624 return -ENOTSUP; 1625 } 1626 1627 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) { 1628 PMD_INIT_LOG(ERR, "Fail to create eventfd"); 1629 return -1; 1630 } 1631 1632 if (!dev->intr_handle->intr_vec) { 1633 dev->intr_handle->intr_vec = 1634 rte_zmalloc("intr_vec", 1635 hw->max_queue_pairs * sizeof(int), 0); 1636 if (!dev->intr_handle->intr_vec) { 1637 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors", 1638 hw->max_queue_pairs); 1639 return -ENOMEM; 1640 } 1641 } 1642 1643 /* Re-register callback to update max_intr */ 1644 rte_intr_callback_unregister(dev->intr_handle, 1645 virtio_interrupt_handler, 1646 dev); 1647 rte_intr_callback_register(dev->intr_handle, 1648 virtio_interrupt_handler, 1649 dev); 1650 1651 /* DO NOT try to remove this! This function will enable msix, or QEMU 1652 * will encounter SIGSEGV when DRIVER_OK is sent. 1653 * And for legacy devices, this should be done before queue/vec binding 1654 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR 1655 * (22) will be ignored. 1656 */ 1657 if (virtio_intr_enable(dev) < 0) { 1658 PMD_DRV_LOG(ERR, "interrupt enable failed"); 1659 return -1; 1660 } 1661 1662 if (virtio_queues_bind_intr(dev) < 0) { 1663 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt"); 1664 return -1; 1665 } 1666 1667 return 0; 1668 } 1669 #define SPEED_UNKNOWN 0xffffffff 1670 #define DUPLEX_UNKNOWN 0xff 1671 /* reset device and renegotiate features if needed */ 1672 static int 1673 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features) 1674 { 1675 struct virtio_hw *hw = eth_dev->data->dev_private; 1676 struct virtio_net_config *config; 1677 struct virtio_net_config local_config; 1678 struct rte_pci_device *pci_dev = NULL; 1679 int ret; 1680 1681 /* Reset the device although not necessary at startup */ 1682 vtpci_reset(hw); 1683 1684 if (hw->vqs) { 1685 virtio_dev_free_mbufs(eth_dev); 1686 virtio_free_queues(hw); 1687 } 1688 1689 /* Tell the host we've noticed this device. */ 1690 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK); 1691 1692 /* Tell the host we've known how to drive the device. */ 1693 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER); 1694 if (virtio_negotiate_features(hw, req_features) < 0) 1695 return -1; 1696 1697 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM); 1698 1699 if (!hw->virtio_user_dev) 1700 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 1701 1702 /* If host does not support both status and MSI-X then disable LSC */ 1703 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && 1704 hw->use_msix != VIRTIO_MSIX_NONE) 1705 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; 1706 else 1707 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; 1708 1709 /* Setting up rx_header size for the device */ 1710 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) || 1711 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) || 1712 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED)) 1713 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf); 1714 else 1715 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr); 1716 1717 /* Copy the permanent MAC address to: virtio_hw */ 1718 virtio_get_hwaddr(hw); 1719 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 1720 ð_dev->data->mac_addrs[0]); 1721 PMD_INIT_LOG(DEBUG, 1722 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1723 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 1724 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 1725 1726 if (hw->speed == SPEED_UNKNOWN) { 1727 if (vtpci_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) { 1728 config = &local_config; 1729 vtpci_read_dev_config(hw, 1730 offsetof(struct virtio_net_config, speed), 1731 &config->speed, sizeof(config->speed)); 1732 vtpci_read_dev_config(hw, 1733 offsetof(struct virtio_net_config, duplex), 1734 &config->duplex, sizeof(config->duplex)); 1735 hw->speed = config->speed; 1736 hw->duplex = config->duplex; 1737 } 1738 } 1739 if (hw->speed == SPEED_UNKNOWN) 1740 hw->speed = ETH_SPEED_NUM_10G; 1741 if (hw->duplex == DUPLEX_UNKNOWN) 1742 hw->duplex = ETH_LINK_FULL_DUPLEX; 1743 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d", 1744 hw->speed, hw->duplex); 1745 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) { 1746 config = &local_config; 1747 1748 vtpci_read_dev_config(hw, 1749 offsetof(struct virtio_net_config, mac), 1750 &config->mac, sizeof(config->mac)); 1751 1752 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 1753 vtpci_read_dev_config(hw, 1754 offsetof(struct virtio_net_config, status), 1755 &config->status, sizeof(config->status)); 1756 } else { 1757 PMD_INIT_LOG(DEBUG, 1758 "VIRTIO_NET_F_STATUS is not supported"); 1759 config->status = 0; 1760 } 1761 1762 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) { 1763 vtpci_read_dev_config(hw, 1764 offsetof(struct virtio_net_config, max_virtqueue_pairs), 1765 &config->max_virtqueue_pairs, 1766 sizeof(config->max_virtqueue_pairs)); 1767 } else { 1768 PMD_INIT_LOG(DEBUG, 1769 "VIRTIO_NET_F_MQ is not supported"); 1770 config->max_virtqueue_pairs = 1; 1771 } 1772 1773 hw->max_queue_pairs = config->max_virtqueue_pairs; 1774 1775 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) { 1776 vtpci_read_dev_config(hw, 1777 offsetof(struct virtio_net_config, mtu), 1778 &config->mtu, 1779 sizeof(config->mtu)); 1780 1781 /* 1782 * MTU value has already been checked at negotiation 1783 * time, but check again in case it has changed since 1784 * then, which should not happen. 1785 */ 1786 if (config->mtu < RTE_ETHER_MIN_MTU) { 1787 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)", 1788 config->mtu); 1789 return -1; 1790 } 1791 1792 hw->max_mtu = config->mtu; 1793 /* Set initial MTU to maximum one supported by vhost */ 1794 eth_dev->data->mtu = config->mtu; 1795 1796 } else { 1797 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1798 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1799 } 1800 1801 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d", 1802 config->max_virtqueue_pairs); 1803 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status); 1804 PMD_INIT_LOG(DEBUG, 1805 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X", 1806 config->mac[0], config->mac[1], 1807 config->mac[2], config->mac[3], 1808 config->mac[4], config->mac[5]); 1809 } else { 1810 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1"); 1811 hw->max_queue_pairs = 1; 1812 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN - 1813 VLAN_TAG_LEN - hw->vtnet_hdr_size; 1814 } 1815 1816 ret = virtio_alloc_queues(eth_dev); 1817 if (ret < 0) 1818 return ret; 1819 1820 if (eth_dev->data->dev_conf.intr_conf.rxq) { 1821 if (virtio_configure_intr(eth_dev) < 0) { 1822 PMD_INIT_LOG(ERR, "failed to configure interrupt"); 1823 virtio_free_queues(hw); 1824 return -1; 1825 } 1826 } 1827 1828 vtpci_reinit_complete(hw); 1829 1830 if (pci_dev) 1831 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x", 1832 eth_dev->data->port_id, pci_dev->id.vendor_id, 1833 pci_dev->id.device_id); 1834 1835 return 0; 1836 } 1837 1838 /* 1839 * Remap the PCI device again (IO port map for legacy device and 1840 * memory map for modern device), so that the secondary process 1841 * could have the PCI initiated correctly. 1842 */ 1843 static int 1844 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw) 1845 { 1846 if (hw->modern) { 1847 /* 1848 * We don't have to re-parse the PCI config space, since 1849 * rte_pci_map_device() makes sure the mapped address 1850 * in secondary process would equal to the one mapped in 1851 * the primary process: error will be returned if that 1852 * requirement is not met. 1853 * 1854 * That said, we could simply reuse all cap pointers 1855 * (such as dev_cfg, common_cfg, etc.) parsed from the 1856 * primary process, which is stored in shared memory. 1857 */ 1858 if (rte_pci_map_device(pci_dev)) { 1859 PMD_INIT_LOG(DEBUG, "failed to map pci device!"); 1860 return -1; 1861 } 1862 } else { 1863 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0) 1864 return -1; 1865 } 1866 1867 return 0; 1868 } 1869 1870 static void 1871 virtio_set_vtpci_ops(struct virtio_hw *hw) 1872 { 1873 #ifdef RTE_VIRTIO_USER 1874 if (hw->virtio_user_dev) 1875 VTPCI_OPS(hw) = &virtio_user_ops; 1876 else 1877 #endif 1878 if (hw->modern) 1879 VTPCI_OPS(hw) = &modern_ops; 1880 else 1881 VTPCI_OPS(hw) = &legacy_ops; 1882 } 1883 1884 /* 1885 * This function is based on probe() function in virtio_pci.c 1886 * It returns 0 on success. 1887 */ 1888 int 1889 eth_virtio_dev_init(struct rte_eth_dev *eth_dev) 1890 { 1891 struct virtio_hw *hw = eth_dev->data->dev_private; 1892 uint32_t speed = SPEED_UNKNOWN; 1893 int vectorized = 0; 1894 int ret; 1895 1896 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) { 1897 PMD_INIT_LOG(ERR, 1898 "Not sufficient headroom required = %d, avail = %d", 1899 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf), 1900 RTE_PKTMBUF_HEADROOM); 1901 1902 return -1; 1903 } 1904 1905 eth_dev->dev_ops = &virtio_eth_dev_ops; 1906 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done; 1907 1908 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 1909 if (!hw->virtio_user_dev) { 1910 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1911 if (ret) 1912 return ret; 1913 } 1914 1915 virtio_set_vtpci_ops(hw); 1916 set_rxtx_funcs(eth_dev); 1917 1918 return 0; 1919 } 1920 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, 1921 NULL, &speed, &vectorized); 1922 if (ret < 0) 1923 return ret; 1924 hw->speed = speed; 1925 /* 1926 * Pass the information to the rte_eth_dev_close() that it should also 1927 * release the private port resources. 1928 */ 1929 eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE; 1930 1931 /* Allocate memory for storing MAC addresses */ 1932 eth_dev->data->mac_addrs = rte_zmalloc("virtio", 1933 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0); 1934 if (eth_dev->data->mac_addrs == NULL) { 1935 PMD_INIT_LOG(ERR, 1936 "Failed to allocate %d bytes needed to store MAC addresses", 1937 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN); 1938 return -ENOMEM; 1939 } 1940 1941 hw->port_id = eth_dev->data->port_id; 1942 /* For virtio_user case the hw->virtio_user_dev is populated by 1943 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called. 1944 */ 1945 if (!hw->virtio_user_dev) { 1946 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw); 1947 if (ret) 1948 goto err_vtpci_init; 1949 } 1950 1951 rte_spinlock_init(&hw->state_lock); 1952 1953 /* reset device and negotiate default features */ 1954 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES); 1955 if (ret < 0) 1956 goto err_virtio_init; 1957 1958 if (vectorized) { 1959 if (!vtpci_packed_queue(hw)) { 1960 hw->use_vec_rx = 1; 1961 } else { 1962 #if !defined(CC_AVX512_SUPPORT) 1963 PMD_DRV_LOG(INFO, 1964 "building environment do not support packed ring vectorized"); 1965 #else 1966 hw->use_vec_rx = 1; 1967 hw->use_vec_tx = 1; 1968 #endif 1969 } 1970 } 1971 1972 hw->opened = true; 1973 1974 return 0; 1975 1976 err_virtio_init: 1977 if (!hw->virtio_user_dev) { 1978 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev)); 1979 if (!hw->modern) 1980 rte_pci_ioport_unmap(VTPCI_IO(hw)); 1981 } 1982 err_vtpci_init: 1983 rte_free(eth_dev->data->mac_addrs); 1984 eth_dev->data->mac_addrs = NULL; 1985 return ret; 1986 } 1987 1988 static int 1989 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) 1990 { 1991 PMD_INIT_FUNC_TRACE(); 1992 1993 if (rte_eal_process_type() == RTE_PROC_SECONDARY) 1994 return 0; 1995 1996 virtio_dev_stop(eth_dev); 1997 virtio_dev_close(eth_dev); 1998 1999 eth_dev->dev_ops = NULL; 2000 eth_dev->tx_pkt_burst = NULL; 2001 eth_dev->rx_pkt_burst = NULL; 2002 2003 PMD_INIT_LOG(DEBUG, "dev_uninit completed"); 2004 2005 return 0; 2006 } 2007 2008 2009 static int vdpa_check_handler(__rte_unused const char *key, 2010 const char *value, void *ret_val) 2011 { 2012 if (strcmp(value, "1") == 0) 2013 *(int *)ret_val = 1; 2014 else 2015 *(int *)ret_val = 0; 2016 2017 return 0; 2018 } 2019 2020 2021 static uint32_t 2022 virtio_dev_speed_capa_get(uint32_t speed) 2023 { 2024 switch (speed) { 2025 case ETH_SPEED_NUM_10G: 2026 return ETH_LINK_SPEED_10G; 2027 case ETH_SPEED_NUM_20G: 2028 return ETH_LINK_SPEED_20G; 2029 case ETH_SPEED_NUM_25G: 2030 return ETH_LINK_SPEED_25G; 2031 case ETH_SPEED_NUM_40G: 2032 return ETH_LINK_SPEED_40G; 2033 case ETH_SPEED_NUM_50G: 2034 return ETH_LINK_SPEED_50G; 2035 case ETH_SPEED_NUM_56G: 2036 return ETH_LINK_SPEED_56G; 2037 case ETH_SPEED_NUM_100G: 2038 return ETH_LINK_SPEED_100G; 2039 default: 2040 return 0; 2041 } 2042 } 2043 2044 static int vectorized_check_handler(__rte_unused const char *key, 2045 const char *value, void *ret_val) 2046 { 2047 if (strcmp(value, "1") == 0) 2048 *(int *)ret_val = 1; 2049 else 2050 *(int *)ret_val = 0; 2051 2052 return 0; 2053 } 2054 2055 #define VIRTIO_ARG_SPEED "speed" 2056 #define VIRTIO_ARG_VDPA "vdpa" 2057 #define VIRTIO_ARG_VECTORIZED "vectorized" 2058 2059 2060 static int 2061 link_speed_handler(const char *key __rte_unused, 2062 const char *value, void *ret_val) 2063 { 2064 uint32_t val; 2065 if (!value || !ret_val) 2066 return -EINVAL; 2067 val = strtoul(value, NULL, 0); 2068 /* validate input */ 2069 if (virtio_dev_speed_capa_get(val) == 0) 2070 return -EINVAL; 2071 *(uint32_t *)ret_val = val; 2072 2073 return 0; 2074 } 2075 2076 2077 static int 2078 virtio_dev_devargs_parse(struct rte_devargs *devargs, int *vdpa, 2079 uint32_t *speed, int *vectorized) 2080 { 2081 struct rte_kvargs *kvlist; 2082 int ret = 0; 2083 2084 if (devargs == NULL) 2085 return 0; 2086 2087 kvlist = rte_kvargs_parse(devargs->args, NULL); 2088 if (kvlist == NULL) { 2089 PMD_INIT_LOG(ERR, "error when parsing param"); 2090 return 0; 2091 } 2092 if (vdpa && rte_kvargs_count(kvlist, VIRTIO_ARG_VDPA) == 1) { 2093 /* vdpa mode selected when there's a key-value pair: 2094 * vdpa=1 2095 */ 2096 ret = rte_kvargs_process(kvlist, VIRTIO_ARG_VDPA, 2097 vdpa_check_handler, vdpa); 2098 if (ret < 0) { 2099 PMD_INIT_LOG(ERR, "Failed to parse %s", 2100 VIRTIO_ARG_VDPA); 2101 goto exit; 2102 } 2103 } 2104 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) { 2105 ret = rte_kvargs_process(kvlist, 2106 VIRTIO_ARG_SPEED, 2107 link_speed_handler, speed); 2108 if (ret < 0) { 2109 PMD_INIT_LOG(ERR, "Failed to parse %s", 2110 VIRTIO_ARG_SPEED); 2111 goto exit; 2112 } 2113 } 2114 2115 if (vectorized && 2116 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) { 2117 ret = rte_kvargs_process(kvlist, 2118 VIRTIO_ARG_VECTORIZED, 2119 vectorized_check_handler, vectorized); 2120 if (ret < 0) { 2121 PMD_INIT_LOG(ERR, "Failed to parse %s", 2122 VIRTIO_ARG_VECTORIZED); 2123 goto exit; 2124 } 2125 } 2126 2127 exit: 2128 rte_kvargs_free(kvlist); 2129 return ret; 2130 } 2131 2132 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 2133 struct rte_pci_device *pci_dev) 2134 { 2135 int vdpa = 0; 2136 int ret = 0; 2137 2138 ret = virtio_dev_devargs_parse(pci_dev->device.devargs, &vdpa, NULL, 2139 NULL); 2140 if (ret < 0) { 2141 PMD_INIT_LOG(ERR, "devargs parsing is failed"); 2142 return ret; 2143 } 2144 /* virtio pmd skips probe if device needs to work in vdpa mode */ 2145 if (vdpa == 1) 2146 return 1; 2147 2148 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw), 2149 eth_virtio_dev_init); 2150 } 2151 2152 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev) 2153 { 2154 int ret; 2155 2156 ret = rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit); 2157 /* Port has already been released by close. */ 2158 if (ret == -ENODEV) 2159 ret = 0; 2160 return ret; 2161 } 2162 2163 static struct rte_pci_driver rte_virtio_pmd = { 2164 .driver = { 2165 .name = "net_virtio", 2166 }, 2167 .id_table = pci_id_virtio_map, 2168 .drv_flags = 0, 2169 .probe = eth_virtio_pci_probe, 2170 .remove = eth_virtio_pci_remove, 2171 }; 2172 2173 RTE_INIT(rte_virtio_pmd_init) 2174 { 2175 rte_eal_iopl_init(); 2176 rte_pci_register(&rte_virtio_pmd); 2177 } 2178 2179 static bool 2180 rx_offload_enabled(struct virtio_hw *hw) 2181 { 2182 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) || 2183 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2184 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6); 2185 } 2186 2187 static bool 2188 tx_offload_enabled(struct virtio_hw *hw) 2189 { 2190 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) || 2191 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) || 2192 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6); 2193 } 2194 2195 /* 2196 * Configure virtio device 2197 * It returns 0 on success. 2198 */ 2199 static int 2200 virtio_dev_configure(struct rte_eth_dev *dev) 2201 { 2202 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; 2203 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode; 2204 struct virtio_hw *hw = dev->data->dev_private; 2205 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN + 2206 hw->vtnet_hdr_size; 2207 uint64_t rx_offloads = rxmode->offloads; 2208 uint64_t tx_offloads = txmode->offloads; 2209 uint64_t req_features; 2210 int ret; 2211 2212 PMD_INIT_LOG(DEBUG, "configure"); 2213 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES; 2214 2215 if (rxmode->mq_mode != ETH_MQ_RX_NONE) { 2216 PMD_DRV_LOG(ERR, 2217 "Unsupported Rx multi queue mode %d", 2218 rxmode->mq_mode); 2219 return -EINVAL; 2220 } 2221 2222 if (txmode->mq_mode != ETH_MQ_TX_NONE) { 2223 PMD_DRV_LOG(ERR, 2224 "Unsupported Tx multi queue mode %d", 2225 txmode->mq_mode); 2226 return -EINVAL; 2227 } 2228 2229 if (dev->data->dev_conf.intr_conf.rxq) { 2230 ret = virtio_init_device(dev, hw->req_guest_features); 2231 if (ret < 0) 2232 return ret; 2233 } 2234 2235 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len) 2236 req_features &= ~(1ULL << VIRTIO_NET_F_MTU); 2237 2238 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2239 DEV_RX_OFFLOAD_TCP_CKSUM)) 2240 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM); 2241 2242 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) 2243 req_features |= 2244 (1ULL << VIRTIO_NET_F_GUEST_TSO4) | 2245 (1ULL << VIRTIO_NET_F_GUEST_TSO6); 2246 2247 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM | 2248 DEV_TX_OFFLOAD_TCP_CKSUM)) 2249 req_features |= (1ULL << VIRTIO_NET_F_CSUM); 2250 2251 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO) 2252 req_features |= 2253 (1ULL << VIRTIO_NET_F_HOST_TSO4) | 2254 (1ULL << VIRTIO_NET_F_HOST_TSO6); 2255 2256 /* if request features changed, reinit the device */ 2257 if (req_features != hw->req_guest_features) { 2258 ret = virtio_init_device(dev, req_features); 2259 if (ret < 0) 2260 return ret; 2261 } 2262 2263 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2264 DEV_RX_OFFLOAD_TCP_CKSUM)) && 2265 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) { 2266 PMD_DRV_LOG(ERR, 2267 "rx checksum not available on this host"); 2268 return -ENOTSUP; 2269 } 2270 2271 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) && 2272 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) || 2273 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) { 2274 PMD_DRV_LOG(ERR, 2275 "Large Receive Offload not available on this host"); 2276 return -ENOTSUP; 2277 } 2278 2279 /* start control queue */ 2280 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) 2281 virtio_dev_cq_start(dev); 2282 2283 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP) 2284 hw->vlan_strip = 1; 2285 2286 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) 2287 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) { 2288 PMD_DRV_LOG(ERR, 2289 "vlan filtering not available on this host"); 2290 return -ENOTSUP; 2291 } 2292 2293 hw->has_tx_offload = tx_offload_enabled(hw); 2294 hw->has_rx_offload = rx_offload_enabled(hw); 2295 2296 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2297 /* Enable vector (0) for Link State Intrerrupt */ 2298 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) == 2299 VIRTIO_MSI_NO_VECTOR) { 2300 PMD_DRV_LOG(ERR, "failed to set config vector"); 2301 return -EBUSY; 2302 } 2303 2304 if (vtpci_packed_queue(hw)) { 2305 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT) 2306 if ((hw->use_vec_rx || hw->use_vec_tx) && 2307 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) || 2308 !vtpci_with_feature(hw, VIRTIO_F_IN_ORDER) || 2309 !vtpci_with_feature(hw, VIRTIO_F_VERSION_1))) { 2310 PMD_DRV_LOG(INFO, 2311 "disabled packed ring vectorized path for requirements not met"); 2312 hw->use_vec_rx = 0; 2313 hw->use_vec_tx = 0; 2314 } 2315 #else 2316 hw->use_vec_rx = 0; 2317 hw->use_vec_tx = 0; 2318 #endif 2319 2320 if (hw->use_vec_rx) { 2321 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2322 PMD_DRV_LOG(INFO, 2323 "disabled packed ring vectorized rx for mrg_rxbuf enabled"); 2324 hw->use_vec_rx = 0; 2325 } 2326 2327 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) { 2328 PMD_DRV_LOG(INFO, 2329 "disabled packed ring vectorized rx for TCP_LRO enabled"); 2330 hw->use_vec_rx = 0; 2331 } 2332 } 2333 } else { 2334 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { 2335 hw->use_inorder_tx = 1; 2336 hw->use_inorder_rx = 1; 2337 hw->use_vec_rx = 0; 2338 } 2339 2340 if (hw->use_vec_rx) { 2341 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM 2342 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { 2343 PMD_DRV_LOG(INFO, 2344 "disabled split ring vectorized path for requirement not met"); 2345 hw->use_vec_rx = 0; 2346 } 2347 #endif 2348 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { 2349 PMD_DRV_LOG(INFO, 2350 "disabled split ring vectorized rx for mrg_rxbuf enabled"); 2351 hw->use_vec_rx = 0; 2352 } 2353 2354 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | 2355 DEV_RX_OFFLOAD_TCP_CKSUM | 2356 DEV_RX_OFFLOAD_TCP_LRO | 2357 DEV_RX_OFFLOAD_VLAN_STRIP)) { 2358 PMD_DRV_LOG(INFO, 2359 "disabled split ring vectorized rx for offloading enabled"); 2360 hw->use_vec_rx = 0; 2361 } 2362 } 2363 } 2364 2365 return 0; 2366 } 2367 2368 2369 static int 2370 virtio_dev_start(struct rte_eth_dev *dev) 2371 { 2372 uint16_t nb_queues, i; 2373 struct virtnet_rx *rxvq; 2374 struct virtnet_tx *txvq __rte_unused; 2375 struct virtio_hw *hw = dev->data->dev_private; 2376 int ret; 2377 2378 /* Finish the initialization of the queues */ 2379 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2380 ret = virtio_dev_rx_queue_setup_finish(dev, i); 2381 if (ret < 0) 2382 return ret; 2383 } 2384 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2385 ret = virtio_dev_tx_queue_setup_finish(dev, i); 2386 if (ret < 0) 2387 return ret; 2388 } 2389 2390 /* check if lsc interrupt feature is enabled */ 2391 if (dev->data->dev_conf.intr_conf.lsc) { 2392 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) { 2393 PMD_DRV_LOG(ERR, "link status not supported by host"); 2394 return -ENOTSUP; 2395 } 2396 } 2397 2398 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that 2399 * in device configure, but it could be unmapped when device is 2400 * stopped. 2401 */ 2402 if (dev->data->dev_conf.intr_conf.lsc || 2403 dev->data->dev_conf.intr_conf.rxq) { 2404 virtio_intr_disable(dev); 2405 2406 /* Setup interrupt callback */ 2407 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) 2408 rte_intr_callback_register(dev->intr_handle, 2409 virtio_interrupt_handler, 2410 dev); 2411 2412 if (virtio_intr_enable(dev) < 0) { 2413 PMD_DRV_LOG(ERR, "interrupt enable failed"); 2414 return -EIO; 2415 } 2416 } 2417 2418 /*Notify the backend 2419 *Otherwise the tap backend might already stop its queue due to fullness. 2420 *vhost backend will have no chance to be waked up 2421 */ 2422 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues); 2423 if (hw->max_queue_pairs > 1) { 2424 if (virtio_set_multiple_queues(dev, nb_queues) != 0) 2425 return -EINVAL; 2426 } 2427 2428 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues); 2429 2430 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2431 rxvq = dev->data->rx_queues[i]; 2432 /* Flush the old packets */ 2433 virtqueue_rxvq_flush(rxvq->vq); 2434 virtqueue_notify(rxvq->vq); 2435 } 2436 2437 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2438 txvq = dev->data->tx_queues[i]; 2439 virtqueue_notify(txvq->vq); 2440 } 2441 2442 PMD_INIT_LOG(DEBUG, "Notified backend at initialization"); 2443 2444 for (i = 0; i < dev->data->nb_rx_queues; i++) { 2445 rxvq = dev->data->rx_queues[i]; 2446 VIRTQUEUE_DUMP(rxvq->vq); 2447 } 2448 2449 for (i = 0; i < dev->data->nb_tx_queues; i++) { 2450 txvq = dev->data->tx_queues[i]; 2451 VIRTQUEUE_DUMP(txvq->vq); 2452 } 2453 2454 set_rxtx_funcs(dev); 2455 hw->started = true; 2456 2457 /* Initialize Link state */ 2458 virtio_dev_link_update(dev, 0); 2459 2460 return 0; 2461 } 2462 2463 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) 2464 { 2465 struct virtio_hw *hw = dev->data->dev_private; 2466 uint16_t nr_vq = virtio_get_nr_vq(hw); 2467 const char *type __rte_unused; 2468 unsigned int i, mbuf_num = 0; 2469 struct virtqueue *vq; 2470 struct rte_mbuf *buf; 2471 int queue_type; 2472 2473 if (hw->vqs == NULL) 2474 return; 2475 2476 for (i = 0; i < nr_vq; i++) { 2477 vq = hw->vqs[i]; 2478 if (!vq) 2479 continue; 2480 2481 queue_type = virtio_get_queue_type(hw, i); 2482 if (queue_type == VTNET_RQ) 2483 type = "rxq"; 2484 else if (queue_type == VTNET_TQ) 2485 type = "txq"; 2486 else 2487 continue; 2488 2489 PMD_INIT_LOG(DEBUG, 2490 "Before freeing %s[%d] used and unused buf", 2491 type, i); 2492 VIRTQUEUE_DUMP(vq); 2493 2494 while ((buf = virtqueue_detach_unused(vq)) != NULL) { 2495 rte_pktmbuf_free(buf); 2496 mbuf_num++; 2497 } 2498 2499 PMD_INIT_LOG(DEBUG, 2500 "After freeing %s[%d] used and unused buf", 2501 type, i); 2502 VIRTQUEUE_DUMP(vq); 2503 } 2504 2505 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num); 2506 } 2507 2508 /* 2509 * Stop device: disable interrupt and mark link down 2510 */ 2511 static void 2512 virtio_dev_stop(struct rte_eth_dev *dev) 2513 { 2514 struct virtio_hw *hw = dev->data->dev_private; 2515 struct rte_eth_link link; 2516 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf; 2517 2518 PMD_INIT_LOG(DEBUG, "stop"); 2519 2520 rte_spinlock_lock(&hw->state_lock); 2521 if (!hw->started) 2522 goto out_unlock; 2523 hw->started = false; 2524 2525 if (intr_conf->lsc || intr_conf->rxq) { 2526 virtio_intr_disable(dev); 2527 2528 /* Reset interrupt callback */ 2529 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) { 2530 rte_intr_callback_unregister(dev->intr_handle, 2531 virtio_interrupt_handler, 2532 dev); 2533 } 2534 } 2535 2536 memset(&link, 0, sizeof(link)); 2537 rte_eth_linkstatus_set(dev, &link); 2538 out_unlock: 2539 rte_spinlock_unlock(&hw->state_lock); 2540 } 2541 2542 static int 2543 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete) 2544 { 2545 struct rte_eth_link link; 2546 uint16_t status; 2547 struct virtio_hw *hw = dev->data->dev_private; 2548 2549 memset(&link, 0, sizeof(link)); 2550 link.link_duplex = hw->duplex; 2551 link.link_speed = hw->speed; 2552 link.link_autoneg = ETH_LINK_AUTONEG; 2553 2554 if (!hw->started) { 2555 link.link_status = ETH_LINK_DOWN; 2556 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) { 2557 PMD_INIT_LOG(DEBUG, "Get link status from hw"); 2558 vtpci_read_dev_config(hw, 2559 offsetof(struct virtio_net_config, status), 2560 &status, sizeof(status)); 2561 if ((status & VIRTIO_NET_S_LINK_UP) == 0) { 2562 link.link_status = ETH_LINK_DOWN; 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