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